RU2751915C2 - Plumbing drain valve - Google Patents

Abstract

FIELD: plumbing devices.SUBSTANCE: plumbing drain fitting contains hollow elongated case (12) containing first open end (14), second open end (16) and inlet port (18) located near first open end (14), a removable one-sided valve made with the possibility of inserting and removing it through first open end (14). The one-sided valve contains a section in the form of a hollow elongated case and a valve element. The section in the form of the hollow elongated case contains a side hole made with the possibility of combining with the inlet port when inserting the one-sided valve into the hollow elongated case through the open end. The first open end is made with the possibility of providing an access port for maintenance. The second open end is made with the possibility of providing an outlet port, made with the possibility of connecting to a downstream sewage system. Inlet port (18) is made in the form of a side hole through a wall of hollow elongated case (12) with the possibility of opening into the end of the one-sided valve located higher along the process flow in such a way that an essentially L-shaped flow path is formed from inlet port (18) to outlet port (16). The one-sided valve is made with the possibility to pass flow in the direction from inlet port (18) to outlet port (16) and is made with the possibility to prevent reverse flow from the outlet port to the inlet port.EFFECT: compact design of the device is provided.14 cl, 5 dwg

Description

FIELD OF INVENTION

SUBSTANCE: invention relates to sanitary and technical drain fittings (fitting), made with the possibility of providing a mechanical siphon, which can be installed at the outlet of sanitary ware, for example, sinks, washbasins, bathtubs or showers. In particular, the invention relates to a sanitary drain fitting adapted to be installed on a sanitary product in an area where there is not enough space under the sanitary product, or as a replacement for a conventional siphon, for example a P-shaped siphon.

BACKGROUND OF THE INVENTION

Siphons under sinks, bathtubs or showers can become clogged due to limescale build-up, soap deposits and frequent hair loss from the user. Typically, people use a plunger or chemical soluble solutions to clean the siphon. The siphon is usually in the form of a P-shaped siphon, which is in addition to the 90-degree fitting on the outlet side of the U-bend. The U-bend provides a seal that contains some water at all times, unless there is an extended period of non-use where the liquid may evaporate.

When a conventional sanitary siphon is blocked, it prevents or slows down the drainage of water from the sanitary article to which it is attached and may allow harmful odors to enter the room where the sanitary article is located, such as a washbasin, sink, bathtub or shower, etc. If the sanitary siphon dries up, there may be a problem with poisonous odors from the drain pipe to which the siphon is attached, and odors can enter the room where the sanitary ware is located. It is understood that blockages, odors and the use of hazardous chemicals to remove such blockages are undesirable and should preferably be avoided.

In addition, the space under sinks and washbasins, in particular those equipped with vanity units, may be limited to the use of conventional siphons.

SUMMARY OF THE INVENTION

The present invention provides a sanitary waste fitting adapted to be mounted on an outlet of a sanitary article such as a washbasin, sink, shower or bathtub, the sanitary waste fitting comprising:

- a hollow elongated body containing a first open end and a second open end, and an inlet port located adjacent to the first open end; and

- a removable one-way valve configured to be inserted and removed through the first open end;

the first open end provides access for cleaning;

the second open end provides an outlet port that connects to a downstream waste system; and

there is an inlet port through the wall of the hollow elongated body, which opens into the upstream end of the one-way valve, so that a substantially L-shaped flow path is formed from the inlet port to the outlet port, the one-way valve being configured to pass through flow in the direction from the inlet port to the outlet port and with the ability to prevent backflow from the outlet port to the inlet port.

The sanitary drain fittings do not have a hydraulic seal, as is required for conventional sanitary siphons, and therefore no water remains in the drain fittings. Preferably, by providing the sanitary drain fittings with a removable one-way valve, it is possible to clear obstructions through the first open end of the hollow elongated body. This eliminates the need to use harmful chemicals to remove blockages.

The inclusion of the one-way valve in the elongated body ensures that the fluid flow only flows in one direction from the sanitary article to the waste, that is, from the inlet to the outlet. Enabling the one-way valve also prevents backflow of fluid from the waste system to which the sanitary drain is attached, and also prevents backflow and the passage of harmful odors from the inlet port that is attached to the outlet end of the sanitary ware.

The flow path formed between the inlet and outlet of a sanitary drain can simulate a 90 degree bend.

The one-way valve may include a hollow elongated portion and a valve member, the hollow elongated portion having a side opening through the hollow body portion, the side opening being configured to align with the inlet port when the one-way valve is inserted into the hollow elongated body through the open end.

By aligning the side opening with the inlet port, a flow path is created from the sanitary ware to the sanitary waste fittings so that the liquid flow from the sanitary ware is directed through the valve element towards the outlet port. The valve element can be located behind the inlet port and in front of the outlet port.

The sanitary drain fittings may further comprise a lid adapted to close the open end of the sanitary drain fittings and provide access to the interior of the hollow elongated body after the cover is removed from the open end.

The first open end may include a removable lid, the lid serving to close the first open end for normal operation when liquid can be drained from the sanitary article to waste, and the lid is removable to provide access to the interior of the hollow elongated body for cleaning and / or maintenance.

To facilitate removal of the lid, the lid may comprise an outer flange configured to abut against the outer edge of the hollow elongated body adjacent the first open end, the outer flange having at least one edge larger in outer dimension than the first open end, so that at least one edge facilitates gripping and pulling the cover off to remove it from the open end of the hollow elongated body.

The lid may further comprise a first latch that is configured to cooperate with a second latch provided on the hollow elongated body and adjacent the first open end to retain the lid at the first open end while the sanitary drain is in use.

The second locking member may comprise a tubular member attached to the outer surface of the hollow elongated body, proximate to the first open end; and an elongated slit through the hollow elongated body at the location of the tubular element, so that the elongated slit opens the inner opening of the tubular element into the interior of the hollow elongated element, the first locking element may be provided with a groove provided on the surface of a portion of the hollow body of the one-way valve, the groove being formed with the possibility of its alignment with the elongated slot for receiving the section of the locking pin inserted through the tubular element.

The locking pin may comprise an elongated shank, the shank being adapted to be inserted through the tubular element, with the upper portion of the shank engaging the groove and the lower portion of the shank engaging the slot so that the one-way valve is secured to the hollow elongated body until the locking pin will not be removed.

The locking pin may further comprise a head at the end of the shank, the head may be used as a stop to prevent the pin from going too far into the tubular element and to provide a grip to assist in removing the locking pin from the tubular element to allow the one-way valve to be released and removed from the elongated hollow. housing.

The valve element can be attached to the downstream end of the hollow body portion, and the cover can be attached to the upstream end of the hollow elongated body portion.

The section of the hollow elongated body may contain one or more external sealing elements around the perimeter of the section of the elongated body, and the external sealing elements are configured to provide mutual fit between one or more sealing elements and the inner surface of the hollow elongated body so that the fluid flow outside the flow path can be prevented.

The valve element may comprise a swing-head valve.

The hollow elongated body may have an oval cross-section.

Sanitary drains can be compact compared to a conventional P-siphon because the one-way valve replaces the conventional hydraulic seal (U-bend) used in a conventional P-siphon. Plumbing fittings can be made more compact by making a hollow elongated elliptical or oval body in which the minimum dimension is vertical and the maximum dimension is horizontal in a horizontally oriented installation.

BRIEF DESCRIPTION OF DRAWINGS

Embodiments of the present invention are described below by way of example only, with reference to the accompanying drawings, in which:

1 illustrates a partially exploded view of a sanitary drain fitting according to an embodiment of the present invention.

FIG. 2 illustrates an assembled view of a sanitary drainage fitting that is illustrated in FIG. 1;

Figure 3 illustrates a first open end of a sanitary flush fitting as shown in Figures 1 and 2 and shows a stop device configured to keep the one-way valve within the sanitary flush fitting;

4 illustrates an isometric view of a one-way valve used within a sanitary waste fitting as illustrated in FIGS. 1, 2 and 3; and

FIG. 5 illustrates the underside of the one-way valve of FIG. 4 and shows a slot configured to receive a locking pin that is configured to hold the one-way valve within a sanitary drain.

DESCRIPTION

Figures 1 and 2 show a sanitary drain fitting according to an embodiment of the present invention. The plumbing fixture 10 comprises a hollow, elongated body 12 that includes a cleaning and maintenance access port 14 at one end, an outlet port 16 at the opposite end, and an inlet port 18 adjacent to the end containing a cleaning and maintenance access port 14 ... The inlet port 18 extends laterally through the top wall 19 of the hollow elongated body 12 into the opening 20 of the hollow elongated body 12.

A cleaning and maintenance access port 14 facilitates the installation and removal of the one-way valve 22 (see Figures 1, 4 and 5) to provide access to the interior of the hollow elongated body 12 for cleaning, maintenance, and / or replacement of the one-way valve 22.

It is understood that due to the location of the cleaning and maintenance access port 14 adjacent to the inlet port 18, it is possible to service the sanitary drain fixture 10 without removing the sanitary drain fixture 10 from the pipeline (not shown) to which it is attached.

In the illustrated example, the inlet port 18 includes a connector 23 that facilitates connecting the inlet port 18 to the outlet port of a sanitary article such as a sink, washbasin, bathtub, and shower (not shown). The outlet port 16 includes a compression fit connector 21 that facilitates the connection of the sanitary drain fixture 10 to a downstream pipeline (not shown) that is connected to the drain.

In the illustrated example, a one-way valve 22 (see Figures 1, 4 and 5) is provided with a tubular section assembly 24 and a duck-nose valve 25.

The tubular section 24 is open at one end 28 and closed at the opposite end by a cover 30. When the one-way valve 22 is inserted into the hollow elongated body 12, the cover 30 serves to close and seal the port 14 of access for cleaning and maintenance.

The cover 30 includes a flange 32 that acts as a stop when the one-way valve 22 is inserted into the hollow elongated body 12, as illustrated in FIG. 2. The flange 32 is larger than the outer dimension of the hollow elongated body 12 so that the edges 33 of the flange 32 protrude from the perimeter of the hollow elongated body 12. The edges 33 of the flange 32 provide a grip for removing the one-way valve 22 from the access port 14 for cleaning and maintenance.

The tubular section 24 includes an opening 31 (see Figures 1 and 4) through the top surface 34 of the tubular section 24. The opening 31 aligns with the inlet port 18 when the one-way valve 22 is inserted into the opening 20 of the hollow elongated body 12 through the cleaning access port 14 and service.

The tubular section 24 includes two perimeter grooves 51 and an O-ring 50 in each groove 51 so that when the one-way valve 22 is inserted into the cleaning and maintenance access port 14, fluid flow is prevented from leaking between the one-way valve 22 and the inner surface of the hollow elongated body 12.

The duck nose valve 25 comprises an elastomeric hollow body 36 that is formed with an open end 38 and a closed end in the form of sponges 39 that open when fluid flows from the inlet port 18 towards the outlet port 20.

The open end 38 of the duck nose valve 25 enters the open end 28 of the tubular section 24 so that liquid draining from a sanitary article (not shown) enters the duck nose valve 25 through the inlet port 18 and opening 31.

Jaws 39 are in a normally closed position, as shown in Figures 1 and 4, and only open when fluid passes through the valve from inlet port 18 to outlet port 20. A normally closed arrangement of jaws 39 means that duck nose valve 25 is operating. as a means of preventing backflow, that is, it prevents the passage of liquid and odors from the outlet port 20 to the inlet port 18. The tapered shape, from the open end 38 of the duck nose valve 25 to the closed end 39 of the duck nose valve 25 resembles the shape of a duck nose / beak, and it is from this that the name of this particular valve is derived.

The duck-nose valve 25 provides a simple and efficient one-way valve, which means that it can be easily incorporated into a drain system of the type described. It will be understood that other types of valves may be included through the access opening for easy removal from the hollow elongated body 12 for cleaning and maintenance.

Referring to Figures 1, 2 and 3, the locking pin 52 is illustrated as part of the plumbing assembly 10 and the hollow elongated body 12.

FIG. 1 shows a disassembled sanitary drain, FIG. 2 shows an assembled sanitary drain 10, and FIG. 3 illustrates the insertion of a locking cotter pin 52 and the relationship between the locking cotter pin 52, the hollow elongated body 12 and the tubular section 24 of the one-way valve 22. ...

Referring to Figures 2 and 3, the hollow elongated body includes a tubular member 54 molded onto the bottom surface 56 of the hollow elongated body 12. A locking pin 52 is inserted into the hole 53 formed by the tubular member 54 to secure the one-way valve within the hollow elongated body. 12.

As shown in Fig. 3, the slit 58 extends through the inner surface of the lower surface of the hollow elongated body 12. The slit 58 extends into the opening 53 through the tubular member 54. As seen in Fig. 3, when the locking pin 52 is inserted into the tubular member 54, the lower portion the shank 60 of the locking cotter pin 52 fits into the hole 53, and the upper portion of the shank 60 extends into the hole 20 through the elongated hollow body 12.

FIG. 5 shows the bottom surface of the one-way valve 22. A groove 62 is provided on the bottom surface of the one-way valve 22 between the flange 32 and the sealing member 50 closest to the closed end of the tubular section 24. With reference to FIGS. 3 and 5, it should be understood that groove 62 aligns with slot 58 when one-way valve 22 is inserted into hollow elongated body 12 through access port 14 for cleaning and maintenance. After insertion, the locking cotter pin 52 may be inserted into the tubular member 54 such that the shank 60 of the locking cotter pin 52 engages a slot 58 and a groove 62 for securing the one-way valve 22 within the elongated hollow body 12.

For ease of cleaning and maintenance, the locking pin 52 can be removed from the tubular member by grasping and pulling the head 64 of the locking pin 52. Once the locking pin 52 is removed, the edges of the flange 33 can be grasped and pulled out so that the one-way valve 22 can be removed from hollow elongated body 12.

From the above description of an embodiment of the present invention, it will be appreciated that sanitary drain fittings 10 provide a useful and compact replacement for conventional P-siphons and the like. The compact arrangement of the sanitary and technical drain fittings 10 is further improved by the hollow elongated body 12 of an oval shape in cross-section.

Preferably, the cleaning and maintenance access port 14 is provided adjacent to the inlet port 18, which means that the plumbing and maintenance access port 14 will be open and easily accessible when the plumbing fixture 10 is installed.

It will be appreciated that although the illustrated embodiment is shown in a horizontal orientation, the sanitary drain fittings are versatile and can be installed horizontally where the inlet port is oriented vertically, or vertically where the inlet port 18 is substantially oriented horizontally.

Connecting the inlet port 18 to an outlet from a drain of a sanitary article such as a sink, washbasin, bathtub, or shower allows outlet port 16 to be connected to downstream piping and does not affect the removal of one-way valve 22 since port 14 is not cleaned and serviced. connected to any pipelines.

The above description links sanitary fittings 10 to sanitary ware such as sinks, washbasins, bathtubs and showers. However, it should be understood that sanitary drain fittings 10 can be used with other systems such as heating / central heating systems.

The duck-nose valve 25 is described as an example of a one-way valve for illustrative purposes. It is understood that other examples of mechanical valves can be used, such as a spring loaded valve, a flap valve, etc.

It is understood that sanitary drains 10 can be used in areas under sinks, washbasins, bathtubs or showers where space is limited and requires a compact design and / or replacement of conventional siphons. In this regard, it is argued that the flow of fluid through the sanitary drain fittings 10, which is illustrated in Figures 1-5, must meet the required minimum standards established for such applications.

Although specific embodiments of the present invention have been described above, it should be understood that deviations from the described embodiments may still fall within the scope of the present invention.

Claims (20)

1. A sanitary drain fitting for installation on the outlet of a sanitary product such as a washbasin, sink, shower or bathtub, containing: a hollow elongated body containing a first open end, a second open end and an inlet port located adjacent to the first open end; a removable one-way valve adapted to be inserted and removed through the first open end; wherein the one-way valve comprises a hollow elongated body portion and a valve element, wherein the hollow elongated body portion comprises a side opening adapted to align with an inlet port when the one-way valve is inserted into the elongated hollow body through the open end; wherein the first open end is configured to provide a service access port; and the second open end is configured to provide an outlet port adapted to be connected to a downstream sewer system; and there is an inlet port configured as a side opening through the wall of the hollow elongated body, the inlet port being configured to open into the upstream end of the one-way valve such that a substantially L-shaped flow path is formed from the inlet port to an outlet port, the one-way valve being configured to allow flow from the inlet port to the outlet port and configured to prevent backflow from the outlet port to the inlet port. 2. The fitting of claim 1, wherein the flow path formed between the inlet port and the outlet port simulates a 90 degree bend. 3. Fitting according to any one of paragraphs. 1, 2, in which the valve element is located below the inlet port and upstream of the outlet port. 4. Fitting according to any one of paragraphs. 1-3, in which the first open end comprises a removable cover configured to close the first open end for normal operation with draining liquid from the sanitary article into the drain and with the ability to detach the cover to provide access to the interior of the hollow elongated body for cleaning and / or service. 5. The fitting of claim 4, wherein the one-way valve extends from an interior surface of the bonnet, and removing the bonnet also removes the one-way valve. 6. Fitting according to any one of paragraphs. 4, 5, in which the cover comprises an outer flange configured to abut against the outer edge of the hollow elongated body adjacent to the first open end, and the outer flange comprises at least one edge of a larger external dimension than the first open end, so that at least at least one edge facilitates gripping and pulling the cover to remove it from the open end of the hollow elongated body. 7. Fitting according to any one of paragraphs. 4, 5, 6, wherein the lid further comprises a first locking member that is configured to cooperate with a second locking member provided on the hollow elongated body and adjacent the first open end to retain the lid at the first open end during use of the fitting. 8. A fitting according to claim 7, wherein the second locking element comprises a tubular element attached to the outer surface of the hollow elongated body near the first open end, and an elongated slot through hollow elongated body at the location of the tubular element, so that the elongated slot opens the inner opening of the tubular element inside the hollow elongated element, and the first locking element is provided with a groove made on the surface of a portion of the hollow body of the one-way valve, and the groove is configured to align with the elongated slot for receiving a section of a locking pin inserted through the tubular element. 9. A fitting according to claim 8, further comprising a locking pin having an elongated shank inserted through the tubular element, wherein the upper portion of the shank interacts with the groove and the lower portion of the shank interacts with the slot so that the one-way valve is secured within the hollow elongated body by interaction with a locking cotter pin until the locking cotter pin is removed. 10. The fitting according to claim. 9, in which the locking pin further comprises a head at the end of the shank, and the head can be configured to be used as a stop to prevent too far penetration of the locking pin into the tubular element and to provide a grip to help remove the locking pin from a tubular member for allowing the one-way valve to be released and removed from the hollow elongated body. 11. Fitting according to any one of paragraphs. 4-10, in which the valve element is adapted to attach to the downstream end of the hollow elongated body portion, and the cover is adapted to attach to the upstream end of the hollow elongated body portion. 12. Fitting according to any one of paragraphs. 1-10, in which the section of the hollow elongated body contains one or more external sealing elements along the perimeter of the section of the elongated body, and the external sealing elements are configured to provide mutual fit between one or more sealing elements and the inner surface of the hollow elongated body so that the fluid flow outside the flow path is prevented. 13. Fitting according to any one of paragraphs. 1-10, in which the valve member comprises a duck nose valve. 14. Fitting according to any one of paragraphs. 1-13, in which the hollow elongated body has an oval cross-section.

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