RU2668333C2 - Odor trap with check valve and air admittance valve - Google Patents

Abstract

FIELD: water supply; sewerage.SUBSTANCE: invention relates to sewage devices. In the method, the trap contains the body of the trap, which forms the inlet of the trap and the outlet of the trap. Said trap body comprises an insert tubular member disposed relative to the trap inlet and outlet in such a way that the flow path of the fluid through the bottle trap is formed by a convoluted path between the trap inlet and outlet, so that there is a water seal between the trap inlet and outlet. Also, the trap comprises a one-way duckbill flow control valve installed adjacent to the trap inlet and continuing in the insert tubular member, and also configured to provide fluid flow from the inlet of the trap to the outlet of the trap and to prevent flow of fluid from the outlet of the trap to the inlet of the trap, and a one-way discharge shut-off valve, located above and adjacent to the outlet of the trap and containing the inlet of the shut-off valve and the outlet of the shut-off valve. Further, the outlet of the trap is displaced from the trap body by means of an exhaust port, and said exhaust port protrudes from the trap body and the one-way discharge shut off valve is mounted on the exhaust port. In operation, in the presence of a negative pressure drop at the one-way discharge shut off valve, the one-way discharge shut off valve is operative to allow air to flow through the one-way discharge shut off valve to remove the differential pressure, but in the presence of a prolonged positive drop in the one-way discharge shut off valve, the one-way discharge shut off valve functions to prevent air from flowing through the one-way discharge shut off valve.EFFECT: ensures the efficiency of the device.8 cl, 4 dwg

Description

FIELD OF TECHNOLOGY

This invention relates to a sewer drain for the discharge of wastewater.

BACKGROUND OF THE INVENTION

Sewer drains with a water lock are widely used worldwide in the sanitary equipment of buildings. A water shutter is usually installed between the outlet of a sink, sink, bath, shower, etc. and a sewer pipe to prevent odors, rodents and other undesirable objects that may be present in the sewer from entering the building through the outlet.

There are many different types of ladders, and one well-known and widely used ladder is a bottle siphon. Bottle siphons are especially popular due to their compactness.

However, bottle siphons have disadvantages. For example, if there are many devices on the same water supply network, a negative pressure differential may occur between the inlet side of the bottle siphon and the outlet side. If this pressure drop is large enough, the water forming the valve can be sucked out, revealing the environment surrounding the inlet of the drain to the contents of the sewer pipe.

This problem is partially removed by using a single-acting valve in the valve inlet, here the single-acting valve creates a barrier between the inlet of the drain and the drain in the event that the gate water is aspirated. Although this barrier works successfully, preventing the entry of insects, etc., a one-way valve, as you know, does not prevent the entry of odors.

SUMMARY OF THE INVENTION

According to a first aspect of the present invention, there is provided a sewer ladder for discharging waste water, comprising:

the ladder body forming the inlet and outlet, the ladder body additionally forms a winding flow path between the inlet of the ladder and the outlet of the ladder, so that during operation there is a water lock between the inlet of the ladder and the outlet of the ladder;

a one-way flow inlet valve installed adjacent to the inlet of the ladder and configured to allow fluid to flow from the inlet of the ladder to the outlet of the ladder, but to prevent the flow from flowing out of the ladder to the inlet of the ladder; and

a single-acting exhaust shut-off valve installed adjacent to the drain outlet;

moreover, during operation, in the presence of a negative pressure drop at the single-acting exhaust shut-off valve, air can pass through the single-acting shut-off valve to relieve the pressure differential, but in the case of a positive differential at the single-acting exhaust shut-off valve, air is prevented from passing through the single-acting shut-off valve.

In at least one embodiment of the present invention, a ladder is provided that, when connected to the sewer pipe, provides air inlet to the outlet of the ladder to relieve the negative pressure drop across the one-way shut-off valve, that is, when the pressure in the sewer pipe is less than the ambient pressure at the valve inlet. In general, for a ladder, this environmental pressure should also be the pressure at the inlet of the ladder. This device, thus, eliminates the pressure drop reaching a level sufficient to create a force sufficient to suck the water shutter from the ladder and into the sewer. In the case of a positive pressure drop of sufficient magnitude, however, the single-acting inlet valve prevents the expulsion of the water lock through the inlet of the ladder.

For the avoidance of doubt, the “negative pressure drop” phase in this context means the pressure drop that creates such a pulling force acting upon operation on the water valve in the ladder that the water valve, if the pressure drop reaches a sufficient value, experiences a force high enough to exit water shutter through the drain outlet.

The inlet of the ladder and the outlet of the ladder may be perpendicular to each other.

The outlet of the ladder and the inlet of the ladder can form connecting parts configured to connect a bottle siphon during operation with a connected sewer system.

The connecting parts may form threaded connections.

The ladder inlet and / or ladder outlet can be displaced from the ladder body. The inlet of the ladder or the outlet of the ladder can be displaced from the body of the ladder using the inlet neck and / or outlet neck.

The inlet or outlet may protrude from the ladder body.

The inlet or outlet may protrude from the ladder body in a direction perpendicular to the corresponding inlet or outlet.

The inlet or outlet may be short pipe sections protruding from the ladder body.

The one-way shut-off valve may be in fluid communication with the outlet.

The single-acting shut-off valve can be installed on the outlet neck. The installation of a single-acting shut-off valve on the outlet neck ensures that the single-acting shut-off valve is located in the place where the largest negative pressure drop can occur between the inlet of the drain and the outlet of the drain.

The single-acting shut-off valve may include an inlet to the shut-off valve and an outlet to the shut-off valve; the outlet of the shut-off valve is in communication with the body of the ladder.

In particular, the outlet of the shutoff valve may be connected to the mouth of the outlet of the ladder.

The shutoff valve may include a shutoff valve passage.

The passage of the shutoff valve may form the outlet of the shutoff valve.

The passage of the shutoff valve may provide fluid communication between the inlet body of the shutoff valve and the outlet of the shutoff valve.

The shut-off valve inlet housing may comprise a shut-off valve element.

The shut-off valve element can be set with respect to the outlet of the shut-off valve so that the shut-off valve element is located above the outlet of the housing.

The check valve outlet can be installed on the surface of the drain outlet neck.

In particular, the release of the shutoff valve can be installed on the lateral or upper surface of the mouth of the drain outlet.

In a preferred embodiment, the discharge valve is located on the upper surface of the drain outlet. Such a device allows the shutoff valve to remain substantially free of fluids or waste that may pass through the bottle siphon at any given time.

The shut-off valve element may be movable between the open position of the shut-off valve and the closed position of the shut-off valve. When the shut-off valve is in the open position, air is provided with a passage from the air inlet through the shut-off valve body and the shut-off valve passage until the shut-off valve is released and when operated in the bottle siphon case.

The shut-off valve element may be movable from the closed position of the shut-off valve to the open position of the shut-off valve in the presence of a threshold pressure. In such an embodiment, the shut-off valve element must not move until the indicator level of the negative pressure drop between the inlet of the shut-off valve and the outlet of the shut-off valve is reached.

The shut-off valve element can be moved between the open position of the shut-off valve and the closed position of the shut-off valve in the presence of a negative pressure drop across the shut-off valve element.

In some embodiments, the shut-off valve element can only move from the shut-off valve closing position to the shut-off valve opening position when the negative pressure drop is such that a pressure drop can be created with the shut-off valve element. The shut-off valve element may be vertically moved between the open position of the shut-off valve and the close position of the shut-off valve. In such an embodiment, the shut-off valve element may be biased toward the closing position of the shut-off valve by gravity. In this embodiment, in order to move the shut-off valve element from the open position of the shut-off valve to the close position of the shut-off valve, the threshold pressure is set by the pressure drop required to overcome the effective gravity.

Air can flow into the inlet of the shutoff valve in the inlet direction and through the outlet of the shutoff valve in the outlet direction.

The inlet and outlet directions may vary.

The inlet direction and outlet direction may be perpendicular. Additionally or alternatively, the inlet direction and the outlet direction are parallel.

In such an embodiment, the passage of the shutoff valve may be tortuous. The winding passage of the shut-off valve allows the inlet shut-off valve and the outlet shut-off valve to be offset from each other. In this case, the inlet size of the shut-off valve and the outlet size of the shut-off valve can be maximized to ensure the passage of a large volume of air through the shut-off valve and into the body of the ladder. In addition, the offset arrangement minimizes the height of the shutoff valves and allows the use of a larger shutoff valve element. The use of a larger shut-off valve element provides threshold pressure control to suit different conditions and different settings.

The shut-off valve inlet body can be mounted on top of the outlet connecting part. Such a device uses a reserve space when operating under a sink or sink, or the like. Additionally, the presence of a shut-off valve inlet housing can prevent loosening of the connection during operation between the shut-off valve outlet and the water supply network.

The shut-off valve inlet housing may form a cavity between the shut-off valve element and the passage.

The cavity during operation may contain air. The presence of air in the event of a counterflow in the drain and water entering the outlet of the shutoff valve prevents the counterflow water or waste in the bottle siphon from contaminating the sealing element and prevents the shutter element from closing properly.

The inlet flow control valve may be a diaphragm valve.

The diaphragm valve may be a single-acting duck nose valve.

BRIEF DESCRIPTION OF THE DRAWINGS

An embodiment of the present invention is described below with reference to the accompanying drawings, in which the following is shown.

In FIG. 1 is a side view of a waste water bottle siphon according to an embodiment of the present invention.

In FIG. 2 shows a section through the bottle siphon of FIG. 1 with exhaust shutoff valve in a closed configuration.

In FIG. 3 shows a section along line A-A of FIG. 2.

In FIG. 4 shows a cross section of the bottle siphon of FIG. 1, the exhaust shutoff valve is shown in the open position.

DETAILED DESCRIPTION OF THE DRAWINGS

In FIG. 1 shows a side view of a bottle siphon, generally indicated at 10, for discharging waste water (not shown), and FIG. 2 shows a section through the bottle siphon of FIG. 1 with exhaust shutoff valve 24 in the closed position.

The bottle siphon 10 comprises a ladder body 12 forming an inlet 14 of the ladder and an outlet 16 of the ladder. The housing further includes an insert 18 for creating a winding flow path 20 between the inlet 14 of the ladder and the outlet 16 of the ladder, in which there is a water lock 22 during operation between the inlet 14 of the ladder and the outlet 16 of the ladder. The bottle siphon 10 further comprises a single-acting inlet valve 23 mounted adjacent to the ladder inlet 14 and a single-acting outlet shut-off valve 24 mounted on a neck 26 connecting the valve outlet 16 to the upper body 28 of the ladder.

The housing 12 of the ladder contains the upper part 28 and the lower part 30, the lower part is screwed to the upper part 28 using a threaded connection 32.

The single-acting flow inlet valve 23 is a polymer diaphragm valve configured to allow fluid to pass from the inlet 14 of the ladder to the outlet 16 of the ladder.

The single-acting exhaust shut-off valve 24 comprises a shut-off valve inlet 34, a shut-off valve outlet 36 and a shut-off valve element 38. The inlet 34 of the shutoff valve and the outlet 36 of the shutoff valve are connected by flow 40. The shut-off valve element 38 is supported by the shut-off valve element support 42, wherein the bottom surface 44 of the shut-off valve element forms a seal with the upper surface 46 of the support.

The seal between the shut-off valve element 38 and the shut-off valve element support 44 is supported by gravity in the absence of a differential pressure, the gravity acts on the shut-off valve element 38, lowering it in contact with the shut-off element support 44.

If there is a differential pressure on the shut-off valve element 38, the shut-off valve element 38 should, in the embodiment where the pressure in the ladder 16 in the area indicated by the “X” adjacent to the outlet 16 of the ladder lower than in the environment indicated by the “Y”, that is, ambient pressure is present at the inlet 14 of the drain and the inlet 34 of the shut-off valve, rise from the support 42 of the shut-off valve element, allowing air to pass through the passage 40. This is shown more clearly in FIG. 4 is a cross-sectional view of the bottle siphon of FIG. 1 is shown with shutoff valve 24 in the open position.

If the pressure drop across the shut-off valve element 38 is a positive pressure drop, that is, the pressure in zone “X” is greater than the ambient pressure “Y”, then the shut-off valve element 24 is pressed into contact with the shut-off element support 42. This prevents the escape of harmful fumes from the sewer pipe (not shown), which should be connected to the outlet 16 of the ladder. The pressure applied in such a situation to push the water shutter toward the inlet 14 is opposed by a single-acting flow inlet valve 23, which prevents the fluid from leaving the body 12 of the drain through the inlet 14 of the drain.

Removing the negative pressure drop prevents the application of a pulling force to the water seal 22, preventing it from being sucked out of the flow path 20 and into the sewer pipe. The specified provides retention of the water lock, preventing the penetration of harmful vapors, etc. from the sewer pipe through a winding flow path 20 and their exit through the inlet 14 of the ladder.

As can be seen in FIG. 1, 2 and 4, the inlet 24 of the shut-off valve and the outlet 36 of the shut-off valve lie in different vertical planes. In other words, the flow direction through the shut-off valve inlet 34 and the flow direction through the shut-off valve outlet 36 are parallel but offset from each other.

This allows the inlet 34 and the outlet 36 to be made with a more complex shape and provides the inlet 34 with a gravity-driven element 38 of the shut-off valve mounted above the outlet 16 of the ladder. Installing the shut-off valve element 38 above the drain outlet 16 reduces the possibility of contamination by the flow in the ladder 10, which leaves the drain 16, of the shut-off valve element 38. This possibility is further reduced by the inclusion in the cavity 44 immediately above the shut-off valve element 38. The cavity 44 creates a zone in which air can be locked, creating a barrier between the outlet 36 of the shut-off valve and the inlet 34 of the shut-off valve, so that if the sewer pipe is blocked and the ladder 10 is filled with fluid, the fluid should not be able to displace air in the passage of the shut-off valve and passing over the shut-off valve element 38.

Various modifications and improvements can be made in the above embodiments without departing from the scope of the invention. For example, although the ladder shown is a split ladder, a single-body ladder may be used.

Claims (13)

1. Bottle siphon for the discharge of wastewater, containing: the ladder body forming the inlet of the ladder and the outlet of the ladder, the body of the ladder comprising an insert tubular element located relative to the inlet of the ladder and the outlet of the ladder in such a way that the fluid flow path through the bottle siphon is formed by a winding flow path between the inlet of the ladder and the drain outlet, so that when there is a water lock between the inlet of the ladder and the outlet of the ladder; a duck nose single-acting flow control valve installed adjacent to the inlet of the drain and extending into the insert tubular element, and also configured to provide a fluid flow from the inlet of the drain to the discharge of the drain and to prevent the flow of fluid from the discharge of the drain to the inlet of the drain; and a single-acting exhaust shut-off valve located above and adjacent to the drain outlet and comprising a shut-off valve inlet and a shut-off valve outlet; in which the outlet of the ladder is offset from the body of the ladder by means of an outlet neck, and the outlet neck protrudes from the body of the ladder and a single-acting exhaust shut-off valve is installed on the outlet neck, moreover, during operation, in the presence of a negative differential pressure on the single-acting exhaust shut-off valve, the single-acting exhaust shut-off valve operates to allow air to pass through the single-acting exhaust shut-off valve to relieve the differential pressure, but in the presence of a positive differential on the single-acting exhaust shut-off valve, the exhaust shut-off valve single-acting valve prevents air from passing through the exhaust shut-off valve last action. 2. The siphon according to claim 1, wherein the inlet of the shutoff valve comprises a shutoff valve element. 3. The siphon according to claim 2, in which the element of the shut-off valve is installed in relation to the release of the shut-off valve so that the element of the shut-off valve is located above the outlet of the body of the ladder. 4. The siphon according to claim 2, wherein the shut-off valve element operates by moving between the shut-off valve opening position and the shut-off valve closing position and moving from the shut-off valve closing position to the shut-off valve opening position in the presence of a threshold pressure. 5. The siphon according to claim 4, in which the shut-off valve element operates, moving between the open position of the shut-off valve and the closed position of the shut-off valve in the presence of a negative pressure drop across the shut-off valve element. 6. The siphon according to claim 2, wherein during operation the shut-off valve inlet and shut-off valve outlet lie on different vertical planes, while the flow direction through the shut-off valve inlet and the flow direction through the shut-off valve outlet are parallel but offset from each other. 7. The siphon according to claim 6, comprising a gravity-driven shut-off valve element. 8. The siphon according to claim 2, further comprising a cavity above the shut-off valve element, wherein the cavity forms an air inclusion that creates a barrier between the outlet of the shut-off valve and the inlet of the shut-off valve.

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