RU2398938C2 - Drain device for reservoirs or tanks equipped with drain valve - Google Patents

Abstract

FIELD: construction.

SUBSTANCE: drain device for reservoirs or tanks equipped with drain valve comprises overflow element, through upper hole of which water leaks out from reservoir or tank into inner cavity of this overflow element, when water level reaches its upper edge. Upper hole of overflow element leads to chamber formed by bell, lateral side of which passes outside overflow element, and lower section of bell body faces upper part of overflow element. At the same time narrow circular space is formed with the possibility for water to flow through it from reservoir or tank into inner cavity of overflow element to create a hydraulic lock in this circular space. Besides in specified lower section of bell body at least one through hole is arranged, and as a result, more intense suction is provided to increase water flow through inner cavity of overflow element. Lower edge of bell body and upper hole of overflow element lie at the same height, or circular space has at least minimum height sufficient to locate lower edge of bell body below hole of overflow element.

EFFECT: simplicity and reliability of device.

8 cl, 2 dwg

Description

Technical field

The present invention relates to a drain device for tanks or tanks equipped with a drain valve, and its purpose is to optimize the discharge of water through the overflow pipe in the event of a tank overflow caused by improper operation of the control valve used to fill the tank.

The overflow pipe is designed to remove excess water through its upper opening or edge into the sewer or toilet. Overfilling usually occurs when the reservoir filling device fails and does not stop the flow of water as needed.

Therefore, the importance of the role of the overflow pipe in preventing flooding is obvious.

State of the art

Norms governing the operation of the overflow pipe require that the tank drainage flow exceed the incoming flow.

To fulfill this requirement, overflow pipes with very large diameters are used, which negatively affects the design and operation of the drain device, or pipes with an expanded upper neck to improve water inlet, which also affects the design of the drain device.

Disclosure of invention

To achieve the goals and eliminate the above drawbacks, a drainage device for tanks equipped with a drain valve is proposed, in a preferred embodiment adapted to drain toilet flush tanks, which is characterized in that it includes a hollow body in the form of an inverted vessel or bell located in the upper part of the pipe overflow, exactly at its opening through which water leaves the tank into the sewer or toilet bowl when a certain level of water in the tank is exceeded in case of emergency, due to improper operation of the filling device, thereby preventing water from overflowing over the upper edge of the tank.

This hollow body forms a closed chamber, which is connected only with the internal cavity of the overflow pipe and, of course, with the sewer drain or the inside of the toilet.

A narrow annular space is formed between the side wall of the hollow body and the upper part of the overflow pipe, through which water passes into the overflow pipe in the event of an emergency with filling the tank, so that when the water level reaches the annular space zone, a hydraulic shutter is created that covers the internal space of the hollow housing, which is associated only with the interior of the overflow pipe, as described above.

The open edge of the hollow body may be located in the same plane or at the same level as the upper opening of the overflow pipe.

The use of this hollow body and its combination with the overflow pipe with the formation of an annular space leads to a strong suction effect, which significantly increases and improves the removal of water, improving, in turn, the drainage flow through the overflow pipe.

With a small annular space, at least one radial hole in the side wall of the hollow body in the region corresponding to the annular space can be used.

In the described device, the suction created by the overflow pipe can be optimized in such a way that even if the pipe diameter is reduced, the guarantee of removing enough water to create the required drainage flow is maintained.

If we take into account the molecular cohesion forces in the liquid, it is possible to successfully prevent water from entering the inside of the overflow pipe due to the action of the hydraulic shutter mentioned above, by means of which the overflow pipe can be sucked into the liquid through a constant section with very little or negligible amount of air, due to which the output stream through the lower part of the overflow pipe it turns out to be larger than that of pipes with a large diameter.

Brief Description of the Drawings

The invention will now be described by way of example of an embodiment thereof with reference to the drawings, in which, to illustrate the invention, and not to limit it, it is shown:

figure 1 is a cross-section, side view, the device used to drain from the tank in the toilets, in accordance with the invention;

figure 2 is a schematic illustration of a device.

Description of Preferred Embodiment

In accordance with the digital designations shown in the drawings, the flushing device of the flushing (flushing) tank generally comprises a unit 1 of a conventional design, which includes, among other elements, an overflow pipe 2, the upper opening or edge 3 of which leads to a closed chamber 4 formed by a hollow body in the form of a bell 5, the extreme part of the wall of which surrounds the upper part of the overflow pipe 2 from the outside, resulting in the formation of a narrow annular space (gap) 6, which may or may not be coaxial.

The height of the annular space 6 may have a minimum value or may even be zero, in other words, the upper hole 3 of the overflow pipe 2 and the open edge of the hollow body 5 are installed at the same height.

The hollow body 5 can be a separate element, or it can be connected with the overflow pipe 2 or another part of the drain device, or it can be an element attached to the overflow pipe itself, forming its integral part.

The hollow body 5 may also have an adjustable height so that the height of the annular space 6 can be adjusted, together with the internal volume of the hollow body 5. In this way, the degree of absorption of the water leaving the overflow pipe can be adjusted to control the water output through this pipe.

In any case, when the annular space 6 is not efficient enough, at least one auxiliary radial hole 8 in the side wall of the housing 5 is used at a level below the maximum level that water can reach in order to fulfill the minimum requirements for removing incoming water . Moreover, said opening 8 will work in parallel with the annular space 6, supplying water to the opening 3 of the overflow pipe 2.

Claims (8)

1. A drain device for tanks or reservoirs equipped with a drain valve, comprising an overflow element, through the upper opening of which water flows from the reservoir or reservoir into the internal cavity of this overflow element, when the water level reaches its upper edge, characterized in that the upper opening (3 ) the overflow element (2) leads into the chamber (4) formed by the bell (5), the side of which extends outside the overflow element (2), and the lower section of the bell housing (5) faces the upper part of the overflow element ( 2), and at the same time a narrow annular space (6) is formed with the possibility of water flowing through it from the reservoir or tank into the internal cavity of the overflow element (2) with the creation of a hydraulic shutter in this annular space (6), moreover, in the indicated lower section of the bell housing (5) at least one through hole (8) is made, and, as a result, stronger suction is provided to increase the flow of water through the internal cavity of the overflow element (2), and the lower edge (7) of the bell housing (5) and top holes e (3) of the overflow element (2) lie at the same height, or the annular space (6) has at least a minimum height sufficient to accommodate the lower edge (7) of the bell housing (5) below the opening (3) of the overflow element (2) . 2. The device according to claim 1, characterized in that the bell housing (5) is a separate component connected to a part of the water discharge device. 3. The device according to claim 1, characterized in that the bell housing (5) is a separate component attached to an overflow device (2). 4. The device according to claim 1, characterized in that the bell housing (5) is a component that is integral with the overflow element (2). 5. The device according to claim 1, characterized in that the bell housing (5) has a height adjustment for changing the height of the narrow annular space (6) and the chamber volume (4). 6. The device according to claim 2, characterized in that the bell housing (5) has a height adjustment for changing the height of the narrow annular space (6) and the chamber volume (4). 7. The device according to claim 3, characterized in that the bell housing (5) has a height adjustment for changing the height of the narrow annular space (6) and the chamber volume (4). 8. The device according to claim 5, characterized in that the narrow annular space (6) is coaxial.

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