JP7541685B2 - Valve system and initial rainwater removal device equipped with the valve system - Google Patents

Description

The present invention relates to a valve system and an initial rainwater removal device equipped with the valve system.

It is expected that rainwater utilization systems will be increasingly introduced in the future as a measure against heavy rains and droughts caused by climate change due to global warming. Rainwater utilization systems are also attracting attention as a sustainable water supply system in the event of disasters such as earthquakes.

Various inventions relating to rainwater utilization have been disclosed so far. Among them, the Initial Rainwater Removal Device and the Rainwater Tank Device Equipped with the Same, the Rainwater Tank Device Communication Network, and the Initial Rainwater Removal Device (Patent Document 1) are systems for collecting clean rainwater using computer control, and are indispensable for medium to large rainwater utilization devices that are expected to be introduced into society in the future.

Initial rainwater is rain that first begins to fall, and contains a lot of pollutants from the atmosphere and dust that has accumulated on the catchment surface (roof surface) during periods of no precipitation, so removing it is essential to store clean rainwater. Efficient initial rainwater removal also requires constant monitoring of the rainwater's quality using a microcomputer or similar device, and storage and drainage control based on the results. Valves are required for this control, but as mentioned above, initial rainwater contains a variety of contaminants, and there is a high possibility of problems occurring with ordinary valves due to clogging with debris, and a significant drainage speed is required, so large, expensive valves are required.

Patent No. 6860898

To solve these problems, the present invention provides a drainage valve system with a new, inexpensive and simple structure for computer-controlled initial storm water drainage.

1. Valve system The valve system according to the present invention is a water storage container in which a bottom opening and a bottom water hole that can be opened and closed by a drain valve are provided at the bottom, and which comprises a tee consisting of a straight main pipe having an upper end connection part and a lower end connection part at the upper end and the lower end, respectively, and a branch pipe branching off from the main pipe, the upper end connection part of the tee is attached below the bottom opening, and water is drained from and stored in the tee by opening and closing the drain valve,
A valve system comprising: a hollow drain valve housing pipe housed in the upper end connection part of the main pipe of the tee; a piston valve housing pipe housed in the lower end connection part of the main pipe of the tee and having a bottom water hole on the bottom; and a water pipe connected to a bottom water hole on the bottom of a water storage container and the bottom water hole of the piston valve housing pipe and having an electromagnetic valve attached thereto;
The drain valve housing pipe has an open upper end and a drain port at the lower end that can be opened and closed by a float drain valve held inside, and the piston valve housing pipe has a piston valve with a push rod protruding from the upper end for pressing the float drain valve upwards that can be raised and lowered using the inner wall as a guide through the drain port, and when the solenoid valve is opened, water stored in the water storage container flows through the water passage pipe, pushing up the piston valve in the piston valve housing pipe, and the push rod of the piston valve presses the float drain valve upwards, causing the water stored in the water storage container to be drained from the drain port of the drain valve housing pipe through the branch pipe of the tee.

The valve system according to the present invention is a water storage container which has a bottom opening and a bottom water hole at its bottom that can be opened and closed by a drain valve, and which comprises a straight main pipe having an upper end connection part and a lower end connection part at its upper end and lower end, respectively, and a branch pipe branching off from the main pipe, the upper end connection part of the tee being attached below the bottom opening, and which drains water from and stores water in the tee by opening and closing the drain valve,
A valve system including a drain valve housing pipe accommodated in an upper end connection part of the main pipe of the tee, a piston valve housing pipe accommodated in a lower end connection part of the main pipe of the tee, a water passage pipe connecting bottom water passage holes provided on a bottom of the piston valve housing pipe and a bottom of a water storage container, respectively, to the bottom water passage hole, and an electromagnetic valve attached to the water passage pipe,
The drain valve housing pipe has a hollow container as its main body, which is open at the top end and has a drain port on its bottom surface, and one or more ribs protruding inward from the inner wall of the hollow container support a cylinder in the hollow so as to be spaced from the bottom of the hollow container, and the drain port can be opened and closed by a float drain valve that can move up and down inside the cylinder. The piston valve housing pipe has a columnar container as its main body, which has an upper bottom hole and the bottom water hole on its upper and bottom surfaces, respectively, and can move up and down using its inner wall as a guide, and has a piston valve with a push rod protruding upward from its upper end. The float drain valve is housed inside, and the push rod passes through the upper bottom hole and the drain outlet and is able to abut against the lower end of the float drain valve. When the solenoid valve is closed, the float drain valve of the drain valve housing pipe fits into the drain outlet and water is stored in the water container. When the solenoid valve is opened, the water stored in the water container flows through the water passage pipe and pushes up the piston valve of the piston valve housing pipe, and the push rod presses upward on the float drain valve fitted into the drain outlet, opening the drain outlet, and the water stored in the water container is drained through the branch pipe of the tee.

The components of the valve system of the present invention, the drain valve housing tube, piston valve housing tube, and water pipe, are made of plastic, metal, etc., and are not particularly limited, but the float drain valve, which can move up and down inside a cylinder supported in a hollow container (drain valve housing tube), is made to float on water, and when the drain outlet is opened to drain the water stored in the water storage container, it floats on the water and does not close the drain outlet. The electromagnetic valve attached to the water pipe may also be a commercially available one, and is not particularly limited.

(Bottom space of drain valve housing)
The valve system of the present invention is characterized in that, in the drain valve housing pipe, a bottom space is formed between the lower end of a cylinder supported by one or more ribs protruding from the inner wall of the hollow container and the bottom of the hollow container, and the distance between the lower end of the cylinder and the bottom of the hollow container in the bottom space is shorter than the vertical length of a float drain valve that can rise and fall within the cylinder.

(Drain valve housing pipe inner wall space)
In the valve system of the present invention, the drain valve housing pipe has a hollow circular flange protruding radially outward from the outer wall of the hollow container, which can be attached below the bottom of the water storage container to surround the bottom opening, and the lower part can be accommodated in the upper end connection part of the main pipe of the tee, and an inner wall space is formed between a cylinder supported in the hollow interior by one or more ribs protruding from the inner wall of the hollow container and the inner wall, and water that has entered from the open upper end can be drained through this inner wall space and the bottom space into the tee through a drain outlet provided on the bottom surface.

(Drain valve housing tube rib, top end of cylinder)
In the valve system of the present invention, the drain valve housing pipe has a flange attached to the bottom surface of the water storage container protruding in the outer direction from the open upper end of the hollow container, and the upper part of one or more ribs protruding from the inner wall of the hollow container and the upper end of a cylinder supported by the one or more ribs may protrude above the flange.

(Piston valve mechanism with gap)
The valve system according to the present invention is the above valve system, wherein an upper surface water passage hole is provided on the upper bottom surface of the columnar container in the piston valve housing tube, and a gap is provided between the piston valve and the inner wall of the columnar container, and as the piston valve descends due to gravity, water below the piston valve rises above the piston valve through the gap, and passes from the columnar container into the cheese through the upper surface water passage hole,
When the solenoid valve is closed, the piston valve descends due to gravity, and the water below the piston valve rises and communicates with the water in the tee, and the piston valve returns to its position at the bottom of the columnar container.

(Water collecting valve housing pipe)
The valve system according to the present invention is the above valve system, in which a water collection valve housing pipe is attached to a water collection port provided on an upper bottom part of a water storage container,
the water collection valve housing pipe has a main body which is a water collection valve container having an opening at both an upper end and a lower end, the opening diameter of the upper end being smaller than that of the lower end, the water collection valve housing pipe includes a flange which extends outward from near the lower end of the water collection valve container and can be fixed to the water collection port, a plurality of guides which protrude from the inner wall of the water collection valve container, and a float water collection valve which moves up and down inside the water collection valve container while being guided by the guides and has a cross-sectional diameter which is larger than the opening diameter of the upper end,
The flange is fixed to the outer peripheral edge of the water collection inlet of the water storage container, so that water that has entered through the opening at the top end of the water collection valve housing container is guided along the gap between the inner wall of the water collection valve housing container and the float water collection valve, through the multiple guides, to the water collection inlet, and stored in the water storage container.The float water collection valve is floated up by the water in the water storage container that rises from the water collection inlet into the interior of the water collection valve housing container, and can block the opening at the top end of the water collection valve housing container.

(computer)
The valve system of the present invention is equipped with a computer capable of transmitting and receiving signals to and from an electromagnetic valve attached to the water pipe, and the electromagnetic valve can open or close the water pipe upon receiving an open signal or close signal sent from the computer.

(Open/Close Sensor)
The valve system according to the present invention is the above valve system in which a water collection valve housing pipe is attached to a water collection port provided on an upper bottom part of a water storage container,
a flange extending from near the lower end of the water collection valve housing tube and fixable to the water collection port, a plurality of guides protruding from the inner wall of the water collection valve housing tube, and a float water collection valve which moves up and down inside the water collection valve housing tube while being guided by the guides and has a cross-sectional diameter larger than the opening diameter of the upper end, the flange being fixed to the outer periphery of the water collection port of a water storage container, and water which has entered from the opening at the upper end of the water collection valve housing tube is guided along the gap between the inner wall of the water collection valve housing tube and the float water collection valve, through the plurality of guides, to the water collection port, and is stored in the water storage container, and the float water collection valve is floated by the water stored in the water storage container which has risen from the water collection port into the water collection valve housing tube, thereby blocking the opening at the upper end of the water collection valve housing tube,
A magnet is embedded in the lower end of the float water collection valve, and a rod-shaped opening/closing sensor having a reed switch and two conductors connected to it built in is installed across the opening at the lower end of the water collection valve housing vessel at the lower end of the water collection valve housing vessel, and the two conductors of the opening/closing sensor are connected to the computer.When the magnet at the lower end of the float water collection valve comes into contact with the opening/closing sensor, the reed switch closes, causing the two conductors to become electrically conductive and send an electrical signal to the computer.

(Initial rainwater removal device)
The initial rainwater removal device according to the present invention is inserted between the roof of a building and a rainwater tank, and a water collection pipe is branched from a branch pipe that sends rainwater collected from the roof of the building to the rainwater tank. In an initial rainwater removal device, the initial rainwater collected in the connected water storage container is removed, and clean rainwater is stored in the rainwater tank through a water injection pipe connected to the tip of the branch pipe,
The initial rainwater removal device comprises a water storage container having a bottom opening and a bottom water passage hole at its bottom and a water collection port at its upper bottom, a magnet attached above the water collection port at the upper bottom of the water storage container, A float water collecting valve with an embedded float rises and falls inside the housing, and an open/close sensor is installed at the bottom end of the housing to cross the water collecting port. The housing is attached to the bottom opening of the water storage container, and is connected to the main pipe, the branch pipe, and the water collecting port. A drain valve housing pipe that is accommodated in the upper end connection part of the main pipe of the tee and that moves up and down inside the drain valve can close a drain port that opens on the bottom surface of the drain valve housing pipe. a piston valve housing pipe that is accommodated in the water storage container and that can communicate with the water storage container through a water passage pipe having an electromagnetic valve; and a computer that can communicate with the electromagnetic valve and the opening/closing sensor;
When the solenoid valve is opened, the water stored in the water storage container flows through the water passage pipe, pushing up the piston valve of the piston valve housing pipe, and the piston valve presses the drain valve of the drain valve housing pipe upward. An initial rainwater removal device equipped with a valve system capable of draining the water stored in the water storage container through the drain port of the drain valve housing pipe and the branch pipe of the tee,
The water collection valve housing pipe fixed to the outer periphery of the water collection port of the water storage container is designed so that if the water in the water storage container does not reach the water collection port, the float water collection valve will descend to the position of the open/close sensor installed across the water collection port. When the magnet embedded in the lower end of the valve acts on the open/close sensor, the open/close sensor is turned on and the computer is energized. When the water in the water storage container rises from the water collection port into the water collection valve container, The float water collecting valve is floated, the open/close sensor separated from the magnet is turned off, and the flow The rainwater collecting valve closes the opening at the top end of the water collecting valve container, and the rainwater flowing through the branch pipe passes through the water collecting pipe and is stored in the rainwater tank via the water injection pipe. By turning on and off the open/close sensor, it is detected whether the water in the water storage container has reached the position of the water collection port, and an open signal or a close signal is sent to the electromagnetic valve to open or close the electromagnetic valve. The piston valve rises and falls depending on whether the valve is opened or closed, allowing water to be stored in or drained from the water storage container.

(Valve System)
The valve system according to the present invention is installed in a tee attached below the bottom opening of a water storage container, and can drain and store water in the water storage container. The valve system according to the present invention is composed of a hollow drain valve housing pipe housed in the upper end connection part of the main pipe of the tee, a piston valve housing pipe housed in the lower end connection part of the main pipe of the tee, and a water passage pipe which connects a bottom water passage hole provided in the bottom of the water storage container and a bottom water passage hole of the piston valve housing pipe and is equipped with an electromagnetic valve, and the electromagnetic valve can also be controlled by a computer.

(Drainage mechanism)
The valve system according to the present invention thus constructed opens and closes the drain port provided at the lower end by a float drain valve held inside the drain valve housing tube. The piston valve housing tube can raise and lower a push rod protruding from the upper end of the built-in piston valve to press the float drain valve upward through the drain port of the drain valve housing tube. When the solenoid valve is opened, water stored in the water storage container flows through the water passage pipe, pushing up the piston valve of the piston valve housing tube, and the push rod presses the float drain valve upward, thereby draining the water stored in the water storage container from the drain port of the drain valve housing tube through the branch pipe of the tee.

(Operation of the piston valve mechanism with clearance)
The valve system according to the present invention may be a piston valve mechanism having a gap. An upper water passage hole is provided on the upper bottom surface of the columnar container (piston valve housing tube), and a gap is provided between the piston valve and the inner wall of the columnar container, so that when the piston valve descends, the water below the piston valve can escape above the piston valve through the gap. Therefore, when the solenoid valve is closed, the water between the solenoid valve and the piston valve is not drained and remains below the piston in the columnar container (piston valve housing tube). However, as the piston valve descends due to gravity, the water below the piston valve rises through the gap, so that the water passes from the columnar container into the tee through the upper water passage hole, and is drained through the branch pipe together with the water from the drain port of the water storage container and the hollow container (drain valve housing tube). In this way, the piston valve continues to descend and can return to its position on the bottom surface of the columnar container.

(Piston valve mechanism with gap)
The valve system of the present invention employing a piston valve mechanism having such a gap does not require attention to the airtightness of the piston inside the columnar vessel (piston valve housing tube), and therefore the piston valve mechanism can be simplified and the cost can be reduced.

(Valve system using a piston valve mechanism with a gap)
In addition, the valve system according to the present invention preferably controls the solenoid valve by a computer. The valve system according to the present invention, which employs a piston valve mechanism having a gap, is a drainage valve with a new structure that is inexpensive and simple, particularly for initial rainwater drainage under computer control. In addition to initial rainwater drainage, this valve system may be widely used as an inexpensive valve for drainage control applications such as agricultural applications, which may require relatively low accuracy, but are unlikely to cause problems even under adverse conditions.

(Water collection mechanism and open/close sensor)
Furthermore, in the valve system according to the present invention, the water collection valve housing pipe may be attached to the outer periphery of the water collection port of the water storage container. When the water storage container becomes full of water and the water collection valve housing pipe rises from the water collection port into the inside of the main body (water collection valve storage container), the float water collection valve is floated up and closes the opening at the top end of the main body, so that water collection can be stopped. On the other hand, when the water storage container becomes low in water, the float water collection valve descends and a magnet embedded in its bottom end comes into contact with an opening/closing sensor installed across the water collection port, sending an electric signal to a computer to inform the main body that water collection is possible.

(Initial rainwater removal device)
The initial rainwater removal device according to the present invention is inserted between the roof of a building and a rainwater tank, and collects rainwater from the roof of the building in a water storage container to remove initial rainwater and store clean rainwater in the rainwater tank. The initial rainwater removal device of the present invention is equipped with the above-mentioned valve system, and the piston valve rises and falls in response to the opening and closing of the electromagnetic valve, thereby storing and discharging water in the water storage container. can be done.

In the initial rainwater removal device of the present invention, the water collection valve housing pipe fixed to the outer periphery of the water collection port of the water storage container has a float water collection valve that descends to the position of an open/close sensor installed across the water collection port when the water stored in the water storage container does not reach the water collection port, and a magnet embedded in the lower end acts on the open/close sensor, which is turned on and electrically connects to the computer. On the other hand, when the water stored in the water storage container rises from the water collection port into the water collection valve storage container, the float water collection valve is floated and the open/close sensor separated from the magnet is turned off. The float water collection valve then closes the opening at the top end of the water collection valve storage container, so that rainwater collected from the roof and flowing through the branch pipe passes through the water collection pipe, and clean rainwater can be stored in the rainwater tank.

The computer can also detect whether the water in the water storage container has reached the water collection outlet by turning the open/close sensor on and off, and can open or close the solenoid valve by sending an open or close signal to the solenoid valve. The piston valve rises and falls in response to the opening and closing of the solenoid valve, so the initial rainwater removal device of the present invention can store and drain water in the water storage container as described above.

In the initial rainwater removal device of the present invention, the number of times N to drain is input into the computer in advance, and if the computer sends an opening signal to the solenoid valve N times within a predetermined fixed period of time, it is possible to prevent the opening signal from being sent (N+1) times. As a result, the initial rainwater stored in the water storage container is drained N times, and when the water is then stored in the water storage container, the opening at the top end of the water collection valve storage container is closed, so that the rainwater collected from the roof or the like and flowing through the branch pipe will then pass through the water collection pipe, allowing clean rainwater to be stored in the rainwater tank.

FIG. 2 is a front schematic view of the valve system according to the present invention. FIG. 2 is an enlarged schematic front view of the valve system according to the present invention. FIG. 1 is a schematic front view showing the operation of the valve system of the present invention when the solenoid valve is opened to drain water, (a) is a schematic front view showing the operation of the piston valve and float drain valve immediately after the solenoid valve is opened, and the flow of water in the water pipe, (b) is a schematic front view showing the operation of the piston valve and float drain valve and the drainage state after a certain time has elapsed since the solenoid valve is opened. FIG. 1 is a schematic front view showing the operation of the valve system of the present invention when the solenoid valve is closed to store water, (a) is a schematic front view showing the operation of the piston valve and float drain valve immediately after the solenoid valve is closed, and the flow of water in the columnar container (piston valve housing tube); (b) is a schematic front view showing the operation of the piston valve and float drain valve and the flow of water in the columnar container (piston valve housing tube) after a certain time has elapsed since the solenoid valve is closed. FIG. 1 is a schematic front view showing the operation when the solenoid valve is closed to store water in the valve system of the present invention which employs a piston valve mechanism having a gap, (a) a schematic front view showing the operation of the piston valve and float drain valve immediately after the solenoid valve is closed, and the flow of water in the columnar vessel (piston valve housing tube); (b) a schematic front view showing the operation of the piston valve and float drain valve and the flow of water in the columnar vessel (piston valve housing tube) after a certain time has elapsed since the solenoid valve is closed. 1A, 1B, 1C, 1D, 1E are plan, side, top and bottom perspective views, respectively, of a drain valve housing pipe of a valve system according to the present invention. FIG. 2 is a circuit diagram of a computer according to an embodiment. 2 is a cross-sectional view of a water collector valve housing tube of the water collector valve system according to the present invention. FIG. 1A is an upper perspective view, FIG. 1B is a plan view, FIG. 1C is a rear view, FIG. 1D is a lower perspective view, and FIG. 1E is a schematic diagram of an open/close sensor of a water collecting valve housing pipe of a water collecting valve system according to the present invention. FIG. 2 is a front schematic view of an initial rainwater removal device, which is an application example of the valve system according to the present invention. FIG. 11 is a front schematic view of an initial rainwater removal device, which is another application example of the valve system according to the present invention.

Hereinafter, embodiments and examples of the valve system according to the present invention will be described with reference to the drawings. Note that the same reference numerals will be used to refer to the same components throughout the drawings.

1. Valve system

As shown in FIG. 2, the valve system 1 according to the present invention is installed in a tee 50 attached below the bottom opening 102 of a water storage container 100 having a bottom opening 102 and a bottom water hole 104 on its bottom 100d that can be opened and closed by a drain valve, and drains and stores water in the water storage container 100.

The water storage container 100 has a bottom opening 102 and a bottom water hole 104 at its bottom 100d. The top end connection 52u of the tee 50, which is made up of a straight main pipe 52 with an upper end connection 52u and a lower end connection 52d at its upper and lower ends, and a branch pipe 54 branching off from the main pipe 52, is attached below the bottom opening 102, and water is drained and stored from the bottom opening 102 through the tee 50 by opening and closing the drain valve 30.

The valve system 1 is composed of a hollow drain valve housing pipe 10 housed in the upper end connection part 52u of the main pipe 52 of the tee 50, a piston valve housing pipe 20 housed in the lower end connection part 52d of the main pipe 52 of the tee 50 and having a bottom water hole 26 on the bottom surface 21d, and a water pipe 40 that connects the bottom water hole 104 on the bottom 100d of the water storage container 100 to the bottom water hole 26 of the piston valve housing pipe 20 and has an electromagnetic valve 6 attached.

The upper end 11u of the drain valve housing tube 10 is open, and the float drain valve 30 held inside can open and close the drain port 12 provided at the lower end 11d. In addition, the piston valve housing tube 20 can raise and lower the piston valve 32, which has a push rod 33 protruding from the upper end to push the float drain valve 30 upward, using the inner wall as a guide through the drain port 12.

When the solenoid valve 6 is opened, the valve system 1 according to the present invention allows the water stored in the water storage container 100 to flow through the water passage pipe 40, pushing up the piston valve 32 in the piston valve housing pipe 20, and the pressure rod 33 of the piston valve 32 presses the float drain valve 30 upward, causing the water stored in the water storage container 100 to be drained from the drain port 12 of the drain valve housing pipe 10 through the branch pipe 54 of the tee 50.

10, the valve system 1 according to the present invention can be attached below the bottom opening 102 of a water storage container 100, and can constitute an initial rainwater removal device 7 together with a computer 5 capable of communicating with the electromagnetic valve 6 and a water level sensor 250 arranged in the water storage container 100. This initial rainwater removal device 7 has a water collection port 222 attached to a downspout (rain gutter) 1011 of a building 1000, and can remove initial rainwater from rainwater collected from the roof 1002 and take out clean rainwater from a water injection pipe 1016 in the direction of the rainwater tank 500.

(1.1) Embodiment 1 (Valve system having a drain valve)

In this embodiment 1, the valve system 1 of the present invention is attached to a water storage container 100 consisting of an upper bottom portion 100u and a bottom portion 100d, each having a water collection port 222, and a side portion 100s connecting the two, as shown in FIG. 11.

(Water storage container and cheese)
2, the tee 50 in which the valve system 1 of this embodiment is installed is composed of a straight main pipe 52 having an upper end connection part 52u and a lower end connection part 52d at its upper and lower ends, respectively, as described above, and a branch pipe 54 branching off from the main pipe 52. The water storage container 100 is capable of draining and storing water from the tee 50 by attaching the upper end connection part 52u of the tee 50 below the bottom opening 102 and opening and closing the float drain valve 30.

(Components: Drain valve housing tube and piston valve housing tube)
The valve system 1 of this embodiment is configured in such a water storage container 100 as shown in Figure 2, and includes a drain valve housing tube 10 accommodated in the upper end connection portion 52u of the main pipe 52 of the tee 50, a piston valve housing tube 20 accommodated in the lower end connection portion 52d of the main pipe 52 of the tee 50, a water passage pipe 40 connecting the bottom water passage hole 26 and the bottom water passage hole 104 provided on the bottom surface 21d of the piston valve housing tube 20 and the bottom 100d of the water storage container 100, respectively, and an electromagnetic valve 6 attached to the water passage pipe 40.

(material)
The materials constituting the drain valve housing pipe 10, the piston valve housing pipe 20, and the water pipe 40, which are the components of the valve system 1 of this embodiment, are plastic, metal, etc., but are not particularly limited, and the electromagnetic valve 6 attached to the water pipe 40 may also be a commercially available one, and is not particularly limited. In addition, the float drain valve 30, which can rise and fall up and down within the cylinder 13 supported within the hollow container 11 (drain valve housing pipe 10), is formed to float on water, and is designed so that when the drain outlet 12 is opened to drain the stored water in the water storage container 100, it floats on the stored water within the hollow container 11 being drained and does not close the drain outlet 12.

These components (drain valve housing tube 10, piston valve housing tube 20, water supply tube 40, solenoid valve 6, etc.) are described in more detail below.

(Drain valve housing pipe)
As shown in Fig. 2, the upper end connection part 52u of the main pipe 52 of the tee 50 houses the drain valve housing pipe 10. The drain valve housing pipe 10 is hollow, and the upper end 11u of the main body 11 (hollow container described below) is open, and the float drain valve 30 held inside can open and close the drain port 12 provided at the lower end 11d of the main body (hollow container) 11. The shape of the float drain valve 30 is preferably columnar, but it may be spherical or another shape, and is not particularly limited as long as it can rise and fall inside the drain valve housing pipe 10.

(Piston valve housing tube)
The piston valve housing tube 20, which has a bottom water hole 26 in the bottom surface 21d, is housed in the lower end connection portion 52d of the main tube 52 of the tee 50. The piston valve housing tube 20 can move the piston valve 32 up and down using the inner wall as a guide. The piston valve 32 has a push rod 33 protruding from its upper end, and the push rod 33 can push the float drain valve 30 upward through the drain port 12 of the drain valve housing tube 10.

(Operation of solenoid valve)
The water passage pipe 40 to which the electromagnetic valve 6 is attached connects the bottom water passage hole 26 of this piston valve housing pipe 20 to a bottom water passage hole 104 provided in the bottom 100d of the water storage container 100. Then, as shown in Fig. 3(a), when the electromagnetic valve 6 is opened, the water stored in the water storage container 100 flows through the water passage pipe 40, pushing up the piston valve 32 of the piston valve housing pipe 20, and as shown in Fig. 3(b), the pressure rod 33 of the piston valve 32 pushes the float drain valve 30 upward, allowing the water stored in the water storage container 100 to be drained from the drain port 12 of the drain valve housing pipe 10 via the branch pipe 54.

The valve system 1 according to the present invention will be described in further detail in the following Example 1.

The valve system 1 according to the first embodiment is configured as described above and is housed in a tee 50 attached below the bottom opening 102 of the water storage container 100. The float drain valve 30, which can move up and down within the cylinder (inner wall) 13 of the drain valve housing tube 10, opens and closes the drain port 12 provided on the bottom surface 11d of the main body (hollow container) 11, thereby storing and draining water in the water storage container 100 through the tee 50.

(Drain valve housing pipe)
As shown in FIG. 6, the drain valve housing pipe 10 of the valve system 1 according to the first embodiment has a hollow container 11 as its main body, with the upper end 11u open (see FIGS. 6(a) and (d)) and a drain port 12 provided on the bottom surface 11d (see FIGS. 6(c) and (e)). One or more ribs 15 protruding inward from the inner wall of the hollow container 11 (see FIGS. 6(a), (b), (d), and (e)) support the cylinder 13 in the hollow so as to be spaced apart from the bottom surface 11d of the hollow container 11 (see FIG. 2). That is, the multiple ribs 15 support the cylinder 13 in the hollow, but the lower ends of the multiple ribs 15 do not reach the bottom surface 11d and are spaced apart from the bottom surface 11d. The float drain valve 30 can move up and down inside the cylinder 13 to open and close the drain port 12.

(Drain valve housing tube; bottom space)
In the drain valve housing pipe 10, the hollow vessel 11 has a bottom space 17 formed between the lower end 13d of the cylinder 13 supported by one or more ribs 15 protruding from its inner wall and the bottom surface 11d of the hollow vessel 11 (see FIG. 2). The distance between the lower end of the cylinder 13 and the bottom surface 11d of the hollow vessel 11 in the bottom space 17 is shorter than the vertical length of the float drain valve 30 that can rise and fall within the cylinder 13, and when the float drain valve 30 descends the cylinder 13 and its lower end reaches the bottom surface 11d of the hollow vessel 11, it can close the drain port 12 (see FIG. 3(a)).

(Drain valve housing pipe)
In this type of drain valve housing pipe 10, the hollow circular flange 16 protruding radially outward from the outer wall of the hollow vessel 11 can be attached to the bottom 100d of the water storage vessel 100, surrounding the bottom opening 102, as shown in Fig. 2. The lower part of the flange 16 can be accommodated in the upper end connection part 52u of the main pipe 52 of the tee 50.

(Drain valve housing pipe; inner wall space)
As described above, in the drain valve housing pipe 10, one or more ribs 15 protruding from the inner wall of the hollow vessel 11 support the cylinder 13 in the hollow interior, and an inner wall space 18 is formed between the cylinder 13 and the inner wall (and the ribs 15) of the hollow vessel 11 (see FIG. 6(a)). The drain valve housing pipe 10 can drain water that has entered from the upper end of the open hollow vessel 11 through this inner wall space 18 and the bottom space 17, from the drain port 12 provided in the bottom surface 11d to the tee 50.

(Drain valve housing tube; rib, upper end of cylinder)
In the drain valve housing pipe 10, the flange 16 attached to the bottom surface 100d of the water storage container 100 is preferably provided to protrude in the outer direction from the open upper end 11u of the hollow container 11. Also, the upper part of one or more ribs 15 protruding from the inner wall of the hollow container 11 and the upper end 13u of the cylinder 13 supported by the ribs 15 may protrude above the flange 16 (see Figures 2, 6, etc.).

(Piston valve housing tube)
On the other hand, the piston valve housing tube 20 has a columnar container 21 as its main body (21) having an upper bottom hole 23 and a bottom water hole 26 on its upper bottom surface 21u and bottom surface 21d, respectively, as shown in Fig. 2. The columnar container 21 accommodates a piston valve 32 with a push rod 33 protruding upward from its upper end inside, and the piston valve 32 can move up and down using the inner wall of the columnar container 21 as a guide. The push rod 33 of the piston valve 32 can pass through the upper bottom hole 23 provided on the upper bottom surface 21u of the columnar container 21 (piston valve housing tube 20) and the drain port 12 provided on the bottom surface 11d of the hollow container 11 (drain valve housing tube 10) and come into contact with the lower end of the float drain valve 30.

(Solenoid valve opening operation)
The float drain valve 30 is a float type that floats on water, although its material is not particularly limited as described above. When the electromagnetic valve 6 is opened from the closed state, the water stored in the water storage container 100 flows from the vertically above the electromagnetic valve 6 toward the piston valve 32 and into the water passage pipe 40, as shown in Fig. 3(a). As a result, the piston valve 32 of the columnar container 21 (piston valve housing pipe 20) is pushed up, and the push rod 33 of the piston valve 32 pushes the float drain valve 30 upward, thereby opening the float drain valve 30 from the drain port 12 of the hollow container 11 (drain valve housing pipe 10) as shown in Fig. 3(b). Then, the water stored in the water storage container 100 and the hollow container 11 (drain valve housing pipe 10) is drained from the drain port 12 through the branch pipe 54.

The float drain valve 30, which has been pushed upward by the pressure rod 33 and released from the drain port 12, floats on the water stored in the drain valve housing pipe 10 being drained, as shown in FIG. 3(b), so the drain port 12 remains open even if the pressure rod 33 is not supported. Therefore, after the solenoid valve 6 is opened and the float drain valve 30 is released from the drain port 12, the solenoid valve 6 may be quickly returned to the closed state. Even if the solenoid valve 6 is returned to the closed state, the drain port 12 remains open, so drainage continues until the water in the water storage container 100 and the hollow container 11 runs out.

(Three-way valve)
4A shows the closed state immediately after the electromagnetic valve 6 is closed from the open state in the valve system 1 during drainage from the drain outlet 12 of the hollow container 11 toward the branch pipe 54 of the tee 50 (open state). In this embodiment 2, the closing operation of the electromagnetic valve 6 will be described when the electromagnetic valve 6 is a three-way valve.

(Solenoid valve closing operation 1)
In Fig. 4(a), the water in the water pipe 40 from the solenoid valve 6 that had been pushing up the piston valve 32 to just below the piston valve 32 flows into the drain pipe 42 vertically below the solenoid valve 6. The water flowing into the water pipe 40 vertically above the solenoid valve 6 is stopped by the solenoid valve 6, and the water level just below the piston valve 32 in the columnar vessel 21 drops due to the water being drained into the drain pipe 42, causing the piston valve 32 to descend as shown in Fig. 4(b). The piston valve 32 then descends to the bottom surface 21d of the columnar vessel 21 (piston valve housing pipe 20). However, during this time, as described above, the float drain valve 30 floats in the drainage water, so the drain port 12 of the hollow vessel 11 is open, and the water draining from the drain port 12 toward the branch pipe 54 of the tee 50 is not affected.

(Solenoid valve closing operation 2)
When the solenoid valve 6 is closed from the open state, if drainage from the drain port 12 toward the branch pipe 54 has been completed, the push rod 33 supports the bottom of the float drain valve 30 (not shown), and the water in the tee 50 is discharged toward the branch pipe 54 and no longer exists. When the solenoid valve 6 is closed, the piston valve 32 descends to the bottom surface 21d of the columnar container 21, and the float drain valve 30 of the drain valve housing pipe 10 descends to close the drain port 12, allowing water to be stored in the water storage container 100.

(Piston valve mechanism with gap)
The valve system 1 according to the third embodiment may be a piston valve mechanism having a gap, which will be described below. As shown in Fig. 5(a) and (b), in the piston valve housing tube 20 according to the third embodiment, an upper surface water passage hole 24 is provided on the upper bottom surface 21u of the columnar container 21, and a gap 34 is provided between the piston valve 32 and the inner wall of the columnar container 21. By providing such a gap 34, when the piston valve 32 descends, the water below the piston valve 32 can escape to above the piston valve 32 through the gap 34, and it is not necessary to pay attention to the airtightness of the piston 32 in the columnar container 21 (piston valve housing tube 20), so that the piston valve mechanism can be simplified and reduced in cost.

(Solenoid valve opening operation)
In the piston valve mechanism having a gap according to the third embodiment, the electromagnetic valve 6 does not need to be a three-way valve, and when the electromagnetic valve 6 is closed as shown in Fig. 5(a), the water flowing into the water pipe 40 vertically above the electromagnetic valve 6 is stopped by the electromagnetic valve 6, and does not need to be drained into the drain pipe 42 vertically below the electromagnetic valve 6. Therefore, the water from the electromagnetic valve 6 to just below the piston valve 32 remains below the piston 32 in the columnar vessel 21 (piston valve housing pipe 20).

However, gravity acts vertically downward on the piston valve 32, and it tries to descend under its own weight. In the piston valve mechanism with gap according to the third embodiment, a gap 34 is provided between the piston valve 32 and the inner wall of the columnar container 21, so that the piston valve 32 descends due to gravity and the water below the piston valve 32 rises through the gap 34. The water that has risen above the piston valve 32 passes through the upper water passage hole 24 from the columnar container 21 into the tee 50, as shown in FIG. 5(b), and can be drained through the branch pipe 54 together with the water from the drain port 12 of the water storage container 100 and the hollow container 11 (drain valve housing pipe 10). Alternatively, it remains above the piston valve 32 in the columnar container 21. In this way, the piston valve 32 continues to descend and can return to the position of the bottom surface 21d of the columnar container 21.

(computer)
In the valve system 1 according to the present invention, it is preferable that the electromagnetic valve 6 is controlled by a computer 5. The computer 5 can be configured by a simple circuit as shown in Fig. 7 and a transmitting/receiving device.

As shown in Figures 10 and 11, the valve system 1 of this embodiment 4 is equipped with a computer 5 that can send and receive signals to and from an electromagnetic valve 6 attached to a water pipe 40, and the electromagnetic valve 6 that receives an open signal or close signal sent from the computer 5 can open or close the water pipe 40.

(1-2) Embodiment 2 (Valve system having a float water collecting valve)

In this embodiment 2, with reference to Figures 11, 8, and 9, we will explain a valve system 1 that opens and closes a water collection port 222 provided on the upper bottom 100u of a water storage container 100 using a float water collection valve 36 and transmits an opening/closing signal to a computer 5.

(Water collecting valve housing pipe)
11, the valve system 1 according to the fifth embodiment includes a water level sensor 250, a computer 5, and a water collection valve housing pipe 60 attached to a water collection port 222 provided on the upper bottom portion 100u of the water storage container 100. The water level sensor 250 provided in the water storage container 100 communicates with the computer 5.

As shown in Figures 8 and 9, the water collection valve housing pipe 60 has an upper end 61u and a lower end 61d both open, and the water collection valve container 61 has a smaller opening diameter at the upper end 61u than at the lower end 61d. A flange 64 that can be fixed to the water collection port 222 extends from near the lower end 61d of the main body 61, and a hollow connecting pipe 62 is provided at the upper end 61u of the main body 61.

The main body (water collection valve container) 61 also has one or more guides 61g protruding from its inner wall, and the float water collection valve 36 is guided by these guides 61g to rise and fall inside the main body 61. The cross-sectional diameter of the float water collection valve 36 is larger than the opening diameter of the upper end 61u of the main body 61, and when the float water collection valve 36 rises inside the main body 61, it can close the opening of the upper end 61u.

The flange 64 of the water collection valve housing pipe 60 is fixed to the outer periphery of the water collection port 222 of the water storage container 100, but in FIG. 8, it is fixed to a cap that covers the water collection port 222. Water that has entered from the opening at the upper end 61u of the main body (water collection valve storage container) 61 is guided to the water collection port 222 through the gap between the inner wall of the main body 61 and the float water collection valve 36 through multiple guides 61g, and is stored in the water storage container 100. In addition, the water collection valve housing pipe 60 can block the opening at the upper end 61u of the water collection valve storage container 61 by the water storage in the water storage container 100 that has risen from the water collection port 222 into the main body (water collection valve storage container) 61, causing the float water collection valve 36 to float.

(Open/Close Sensor)
In such a water collection valve housing pipe 60 (see Figure 8), it is preferable to embed a magnet 37 in the lower end of the float water collection valve 36 that rises and falls inside the main body (water collection valve storage container) 61, and have it interact with an opening/closing sensor 70 that has a built-in reed switch 72 at the lower end 61d of the main body 61 (see Figure 9(e)).

That is, as shown in FIG. 8, a rod-shaped open/close sensor 70 (see FIG. 9(d) and (e)) containing a reed switch 72 and two conductors 74 connected thereto is installed across the opening of the lower end 61d of the main body 61. For example, the rod-shaped open/close sensor 70 is fitted into the open/close sensor fitting groove 701 in FIG. 9(d).

The two conductors 74 of the open/close sensor 70 are connected to the computer 5. When the magnet 37 at the lower end of the float water collecting valve 36 comes into contact with the open/close sensor 70, the reed switch 72 closes, causing the two conductors 74 to become conductive, and an electrical signal can be sent to the computer 5. When the open/close sensor 70 is used, the water level sensor 250 described above is not necessary.

2. Application example (initial rainwater removal device)

In this section, we will explain the initial rainwater removal device 7 using the valve system 1 according to the present invention shown in Figure 1. As with Figures 10 and 11 above, this initial rainwater removal device 7 can remove initial rainwater collected in the water storage container 100 from the roof 1002 via the eaves gutter 1010, the water collection pipe 1014, etc., and store clean water in the rainwater tank 500 via the water injection pipe 1016.

The initial rainwater removal device 7 according to the fifth embodiment is a device in which the valve system 1 according to the present invention, which is composed of a drain valve housing pipe 10, a piston valve housing pipe 20, a water flow pipe 40 (see Figs. 2 to 5), a computer 5, and a water collection valve housing pipe 60 (see Figs. 8 and 9), is attached to a water storage container 100, as shown in Fig. 1. The initial rainwater removal device 7 according to the present embodiment is configured such that the branch pipe 1013 branched from the filter 1012 is branched and connected to the water collection pipe 1014 and the water injection pipe 1016, as shown in Fig. 1, so that larger debris can be removed in advance by the filter 1012 from the rainwater collected in the water storage container 100.

(Initial rainwater removal device)
The initial rainwater removal device 7 according to the fifth embodiment relays the filter 1012 attached below the roof 1002 of the building 1000 to drain rainwater onto the building 1000 and the rainwater tank 500, and The initial storm water removal device 7 is connected to the branch pipe 1013 branched from the drain valve housing pipe 1012 by the water collection pipe 1014. As described above, the initial storm water removal device 7 includes the drain valve housing pipe 10, the piston valve housing pipe 20, the computer 5, The valve system 1, which is composed of a water collecting valve housing pipe 60 and the like, is provided in a water storage container 100. The water storage container 100 has a bottom portion 100d, an upper bottom portion 100u, and a side portion 100s connecting the bottom portion 100d and the upper bottom portion 100u. A water collection port 222 to which a water collection valve housing pipe 60 is attached is provided on the upper bottom portion 100u. The tee 50 has a bottom opening 102 for attaching the upper end connection portion 52u of the tee 50, and a bottom water hole 104.

(Water collecting valve housing pipe)
8, the flange 64 of the water collection valve housing pipe 60 is fixed to the outer periphery of the water collection port 222 of the water storage container 100. When the water stored in the water storage container 100 does not reach the water collection port 222, the float water collection valve 36 descends to the position of the open/close sensor 70 installed across the water collection port 222, and the magnet 37 embedded in its lower end contacts or acts on the open/close sensor 70, turning it on and conducting electricity with the computer 5. In this state, the computer 5 can detect that the main body (water collection valve storage container) 61 is able to collect water.

On the other hand, when the water storage container 100 becomes full and rises from the water collection port 222 into the inside of the main body (water collection valve housing container) 61, the float water collection valve 36 is floated, the magnet 37 embedded in the lower end of the float water collection valve 36 is no longer in contact with the opening/closing sensor 70, and the opening/closing sensor 70 turns off. The float water collection valve 36 then rises further, and the float water collection valve 36 closes the opening at the upper end 61u of the main body 61. As a result, the computer 5 is insulated from the opening/closing sensor 70 and can detect that the water storage in the main body (water collection valve housing container) 61 is full.

(Drain valve housing pipe)
In the initial rainwater removal device 7 according to this embodiment 5, the method in which the electromagnetic valve 6 of the valve system 1 opens and closes the drain outlet 12 of the drain valve housing pipe 10 (or the bottom opening 102 of the water storage container 100) is as described in the above embodiments 1 to 3. The upper end connection part 52u of the tee 50 is attached below the bottom opening 102, and the drain outlet 12 of the hollow container 11 (drain valve housing pipe 10) contained in this upper end connection part 52u is opened and closed by the float drain valve 30 to drain water from the tee 50 and store water.

(Water collecting valve housing pipe)
The initial rainwater removal device 7, which is composed of the water storage container 100 and the valve system 1, stores collected rainwater up to the position of the water collection port 222 of the water storage container 100, and when this stored water rises from the water collection port 222 into the water collection valve storage container 61 (water collection valve housing pipe 60), the float water collection valve 36 is floated and closes the opening at the upper end 61u of the water collection valve storage container 61. Therefore, the rainwater flowing through the branch pipe 1013 passes through the water collection pipe 1014 and flows into the water injection pipe 1016, and is stored in the rainwater tank 500.

The opening/closing sensor 70 provided in the water collection valve housing pipe 60 of this initial rainwater removal device 7 is capable of transmitting and receiving signals to and from the computer 5 provided in the valve system 1, as described above. That is, the computer 5 can detect whether the water stored in the water storage container 100 has reached the position of the water collection port 222 by the on/off state of the opening/closing sensor 70. Depending on whether the opening/closing sensor 70 is on/off, the computer 5 sends an open signal or a close signal to the electromagnetic valve 6, opening and closing the electromagnetic valve 6. Then, depending on whether the electromagnetic valve 6 is opened or closed, the piston valve 32 rises and falls, allowing the water storage and drainage of the water storage container 100.

In the initial rainwater removal device 7, the number of times the stored water in the water storage container 100 is drained can be freely determined. The number of times N to drain is input in advance into the computer 5, and if the computer 5 sends an opening signal to the electromagnetic valve 6 N times within a predetermined period of time, the opening signal is not sent (N+1) times. As a result, the initial rainwater stored in the water storage container 100 is drained N times, and when the water is then stored in the water storage container 100, the opening at the upper end 61u of the water collection valve storage container 61 is closed, so that clean rainwater can be stored in the rainwater tank 500.

The valve system and water purification method of the present invention have been described above, but the present invention is not limited to the above embodiments and examples.

In addition, the present invention can be implemented in various forms with various improvements, modifications, and changes based on the knowledge of those skilled in the art without departing from the spirit of the invention.

The valve system of the present invention has the potential to be widely used as an inexpensive valve for drainage control applications, not only for initial storm water drainage, but also for agricultural applications where relatively low precision is acceptable, while at the same time being less prone to problems even under adverse conditions.

1: Valve system according to the present invention 5: Computer 6: Electromagnetic valve 7; Initial rainwater removal device 10: Drain valve housing pipe 11: Hollow container 11u: Upper end 11d: Bottom surface 12: Drain port 13: Cylinder 13c: Lid 13u: Upper end 13d: Lower end 15: Rib 16: Flange 17: Bottom space 18: Inner wall space 20: Piston valve housing pipe 21: Columnar container 21u: Upper bottom surface 21d: Bottom surface 23: Upper bottom hole 24: Upper water passage hole 26: Bottom water passage port 30: Float drain valve 32: Piston valve 33: Push rod 34: Gap 36: Float water collection valve 37: Magnet 40: Water passage pipe 42: Drain pipe 50: Tee 52: Main pipe 52u: Upper end connection part 52d: Lower end connection part 54: Branch pipe 60: Water collection valve housing pipe 61: Water collection valve container 61u: Upper end 61d: Lower end 61g: Guide 62: Connection pipe 64: Flange 69: Bolt hole 70: Opening/closing sensor 701: Opening/closing sensor fitting groove 72: Reed switch 74: Conductor 100: Water storage container 100u: Upper bottom 100d: Bottom 100s: Side 102: Bottom opening 104: Bottom water hole 222: Water collection port
224: Water inlet
250: Water level sensor 500: Rainwater tank
1000: Buildings
1002: Roof
1010: Eaves gutter 1011: Downspout (rain gutter)
1012: Filter
1013: Branch pipe 1014: Water collection pipe 1016: Water injection pipe

Claims (10)

The bottom portion is provided with a bottom opening portion and a bottom water hole that can be opened and closed by a drain valve,
a tee comprising a straight main pipe having an upper end connection portion and a lower end connection portion at the upper end and the lower end, respectively, and a branch pipe branching off from the main pipe, the upper end connection portion being attached below the bottom opening,
A water storage container that drains water from the cheese and stores water therein by opening and closing the drain valve,
a hollow drain valve housing pipe housed in the upper end connection portion of the main pipe of the tee;
a piston valve housing pipe that is accommodated in the lower end connection portion of the main pipe of the tee and has a bottom water hole on the bottom surface;
A valve system comprising: a water pipe that connects a bottom water hole provided at the bottom of a water storage container with a bottom water hole of the piston valve housing pipe and has an electromagnetic valve attached thereto;
The drain valve housing pipe has an open upper end and a drain port provided at a lower end that can be opened and closed by a float drain valve held inside,
The piston valve housing pipe has a piston valve with a push rod protruding from the upper end for pushing the float drain valve upward through the drain port, and the piston valve housing pipe can move up and down along the inner wall as a guide,
When the solenoid valve is opened, water stored in the water storage container flows through the water passage pipe, pushing up the piston valve in the piston valve housing pipe, and the pressure rod of the piston valve presses the float drain valve upward, thereby draining the water stored in the water storage container from the drain outlet of the drain valve housing pipe through the branch pipe of the tee. The device comprises an upper bottom portion and a bottom portion each having a water collection port, and a side portion connecting the upper bottom portion and the bottom portion;
The bottom portion is provided with a bottom opening portion and a bottom water hole that can be opened and closed by a float drain valve,
a tee comprising a straight main pipe having an upper end connection portion and a lower end connection portion at the upper end and the lower end, respectively, and a branch pipe branching off from the main pipe, the upper end connection portion being attached below the bottom opening,
In a water storage container that drains water from the cheese and stores water by opening and closing the float drain valve,
a drain valve housing pipe accommodated in the upper end connection portion of the main pipe of the tee;
a piston valve housing pipe accommodated in a lower end connection portion of the main pipe of the tee;
a water pipe connecting the bottom water hole to a bottom water hole provided on a bottom surface of the piston valve housing pipe and a bottom surface of a water storage container;
an electromagnetic valve attached to the water pipe;
1. A valve system comprising:
The drain valve housing pipe is
The main body is a hollow container with an open top and a drainage hole at the bottom,
One or more ribs protruding inward from the inner wall of the hollow container support the cylinder in the hollow so as to be spaced apart from the bottom of the hollow container;
The drain outlet can be opened and closed by a float drain valve that can move up and down inside the cylinder,
The piston valve housing tube is
The main body is a columnar vessel having an upper bottom hole and the bottom water hole on the upper and bottom surfaces, respectively;
A piston valve is housed inside the columnar vessel and can move up and down using the inner wall of the columnar vessel as a guide and has a push rod protruding upward from its upper end.
The push rod can pass through the upper bottom hole and the drain port and abut against the lower end of the float drain valve;
When the solenoid valve is closed, the float drain valve of the drain valve housing pipe fits into the drain port, filling the water storage container with water;
When the solenoid valve is opened, the water stored in the water storage container flows through the water passage pipe, pushing up the piston valve in the piston valve housing pipe, and the pressure rod presses upward on the float drain valve fitted into the drain outlet, opening the drain outlet and draining the water stored in the water storage container through the branch pipe of the tee. In the drain valve housing pipe,
The hollow container has a bottom space formed between a lower end of a cylinder supported by one or more ribs protruding from an inner wall of the hollow container and a bottom of the hollow container,
3. The valve system according to claim 2, wherein the distance between the lower end of the cylinder and the bottom of the hollow container in the bottom space is shorter than the vertical length of a float drain valve that can rise and fall within the cylinder. The drain valve housing pipe is
A hollow circular flange protruding radially outward from the outer wall of the hollow container can be attached to a lower part of the bottom of the water storage container so as to surround the bottom opening of the water storage container;
The lower part can be accommodated in the upper end connection part of the main pipe of the tee,
An inner wall space is formed between a cylinder supported in the hollow interior by one or more ribs protruding from the inner wall of the hollow container and the inner wall,
Water that has entered through the open upper end through the inner wall space and the bottom space is
4. The valve system of claim 3 , wherein drainage is possible into the cheese through a drainage hole provided in the bottom surface of the valve system. The drain valve housing pipe has a flange attached to the bottom surface of the water storage container, and the flange protrudes in an outer direction from the open upper end of the hollow container,
5. The valve system according to claim 4, wherein an upper portion of one or more ribs protruding from the inner wall of the hollow container and an upper end of a cylinder supported by the one or more ribs protrude above the flange. In the piston valve housing pipe,
An upper surface water passage hole is provided on the upper bottom surface of the cylindrical container,
a gap is provided between the piston valve and an inner wall of the columnar vessel;
3. The valve system according to claim 2, wherein as the piston valve descends due to gravity, water below the piston valve rises above the piston valve through the gap and passes through the upper water passage hole from the columnar container into the cheese,
When the solenoid valve is closed, the piston valve descends due to gravity, the water below the piston valve rises and communicates with the water in the tee, and the piston valve returns to its position at the bottom of the columnar container. 3. The valve system according to claim 2, wherein the water collecting valve housing pipe is attached to a water collecting port provided on the upper bottom of the water storage container,
The water collecting valve housing pipe is
A water collecting valve accommodating vessel having an upper end and a lower end both open, the upper end opening diameter being smaller than the lower end opening diameter,
a flange extending outward from the vicinity of a lower end of the water collection valve housing vessel and capable of being fixed to the water collection port;
A plurality of guides protruding from an inner wall of the water collecting valve housing vessel;
a float water collecting valve that is guided by the guide and moves up and down inside the water collecting valve housing vessel and has a cross-sectional diameter larger than the opening diameter at the upper end,
The flange is fixed to the outer periphery of the water collection port of the water storage container,
Water that has entered through an opening at the top end of the water collecting valve housing is guided along a gap between the inner wall of the water collecting valve housing and the float water collecting valve, through the plurality of guides, to the water collecting port, and is stored in a water storage container;
A valve system in which the float water collection valve is floated up by the water stored in a water storage container that rises from the water collection port into the water collection valve housing container, thereby blocking the opening at the upper end of the water collection valve housing container. A computer capable of transmitting and receiving information to and from the electromagnetic valve attached to the water pipe is provided.
8. The valve system according to claim 1, wherein the electromagnetic valve receives an open signal or a close signal sent from the computer and opens or closes the water pipe. 9. The valve system according to claim 8, wherein the water collecting valve housing pipe is attached to a water collecting port provided on the upper bottom of the water storage container.
The water collecting valve housing pipe is
A water collecting valve accommodating vessel having an upper end and a lower end both open, the upper end opening diameter being smaller than the lower end opening diameter,
a flange extending outward from the vicinity of a lower end of the water collection valve housing vessel and capable of being fixed to the water collection port;
A plurality of guides protruding from an inner wall of the water collecting valve housing vessel;
a float water collecting valve that is guided by the guide and moves up and down inside the water collecting valve housing vessel and has a cross-sectional diameter larger than the opening diameter at the upper end,
The flange is fixed to the outer periphery of the water collection port of the water storage container,
Water that has entered through an opening at the top end of the water collecting valve housing is guided along a gap between the inner wall of the water collecting valve housing and the float water collecting valve, through the plurality of guides, to the water collecting port, and is stored in a water storage container;
A valve system in which the float water collecting valve is floated by the water stored in a water storage container that rises from the water collecting port into the water collecting valve housing container, thereby closing an opening at the upper end of the water collecting valve housing container,
A magnet is embedded in the lower end of the float water collecting valve,
A rod-shaped open/close sensor having a reed switch and two conductors connected thereto is installed at the lower end of the water collecting valve housing vessel across the opening at the lower end of the water collecting valve housing vessel,
The two conductive wires of the open/close sensor are connected to the computer,
9. The valve system according to claim 8, wherein when a magnet at a lower end of the float collecting valve comes into contact with the open/close sensor, the reed switch closes, causing the two conducting wires to become energized and sending an electrical signal to the computer. It is inserted between the roof of the building and the rainwater tank,
In an initial rainwater removal device, a water collection pipe is branched from a branch pipe that sends rainwater collected from the roof of a building to a rainwater tank, initial rainwater collected in a water storage container connected to the water collection pipe is removed, and clean rainwater is stored in the rainwater tank through a water injection pipe connected to the tip of the branch pipe,
The initial rainwater removal device is
a water storage container having a bottom opening and a bottom water hole at its bottom and a water collection port at its upper bottom;
a water collection valve housing pipe attached above a water collection port provided at the upper bottom of a water storage container, a float water collection valve having an embedded magnet rising and lowering inside the housing pipe, and an open/close sensor installed at the lower end thereof so as to cross the water collection port;
A tee pipe consisting of a main pipe and a branch pipe, which is attached to the bottom opening of the water storage container;
a drain valve housing pipe that is housed in the upper end connection part of the main pipe of the tee and that allows a drain valve that moves up and down inside the drain valve housing pipe to close a drain port that opens on the bottom surface of the drain valve housing pipe;
a piston valve housing pipe housed in a lower end connection portion of the main pipe of the tee and capable of communicating with a water storage container through a water passage pipe having an electromagnetic valve;
a computer capable of communicating with the solenoid valve and the open/close sensor;
Including,
When the solenoid valve is opened, the water stored in the water storage container flows through the water passage pipe, pushing up the piston valve of the piston valve housing pipe, and the piston valve presses the drain valve of the drain valve housing pipe upward, thereby draining the water stored in the water storage container through the drain port of the drain valve housing pipe and the branch pipe of the tee. The initial rainwater removal device is equipped with a valve system,
The water collection valve housing pipe fixed to the outer peripheral edge of the water collection port of the water storage container is
When the water in the water storage container does not reach the water collection port, the float water collection valve descends to the position of the open/close sensor installed across the water collection port, and the magnet embedded in the lower end acts on the open/close sensor, which is turned on and conducts electricity to the computer,
When the water in the water storage container rises from the water collection port into the water collection valve housing container, the float water collection valve is floated, the open/close sensor separated from the magnet turns off, the float water collection valve closes the opening at the top end of the water collection valve housing container, and the rainwater flowing through the branch pipe passes through the water collection pipe and is stored in the rainwater tank via the water injection pipe,
The computer includes:
By turning on and off the open/close sensor, it is detected whether the water in the water storage container has reached the position of the water collection port, and an open signal or a close signal is sent to the electromagnetic valve to open or close the electromagnetic valve.
This is an early-stage rainwater removal device in which a piston valve rises and falls in response to the opening and closing of the electromagnetic valve, thereby storing and discharging water in the water storage container.

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