RU211076U1 - DRAIN VALVE - Google Patents

Abstract

The utility model relates to the designs of shut-off devices and is a drain valve for draining water from a pipeline back into a source of frost protection, for example, for winter well shutdown or in case of system repair. The drain valve has a composite body of the upper part 1 and the lower part 2. The upper 1 and lower 2 parts each have built-in compression fittings on the outside (from the free end), consisting of a nut 3, a collet 5, a retaining ring 6 and an o-ring 13. The valve has a flat shutter 8 with an elastic gasket 11 installed with the possibility of interacting with the annular seat 23 of the shutter 8. On the axis 9 in the housing wall, a lever 7 is pivotally fixed, installed with the possibility of rotation and movement of the shutter 8. The shutter 8 is made with a cylindrical tail part 21 and pressure rod 22 coaxially located on opposite sides of the shutter 8. The guide sleeve 26 in the upper part 1 of the housing is made with radial grooves around its through hole for the tail part 21 of the shutter 8 and is connected integrally with the wall of the upper part 1 of the housing with ribs. Insert 4 is placed in the housing, in which there is a diametrically hollow inner central jumper (sleeve) 25 of box shape, in the upper wall of which, i.e. from the side of its junction with the upper part of the body 1 there is an annular seat 23 of the shutter 8. The saddle 23 is made with radial grooves around its through hole for the pressure rod 22 of the shutter 8. In this case, the insert 4 has a through transverse channel passing through its annular wall and the jumper 25 16 for the passage of the fluid medium and the angular movement of the lever 7 on its axis 9. In the hole of the seat 23 there is a pressure rod 22 of the shutter 8, supported on the rotary lever 7, made at one end with an eye 24. The axis 9 of the lever 7 is mounted on a support formed in housing wall with grooves 10, and a ledge of a through transverse channel 16. The housing is made with a side window 17 connected to the channel 16 for access to flexible traction 19. In the upper part of the housing 1, four internal diametrically located ribs are made integral with the axial guide bushing 26 for the tail section 21 gate 8. As a result of the implementation of the claimed utility model, the expansion of the arsenal of drain valves is realized due to the creation alternative design of the original valve, which has high reliability and durability, as it does not allow water supply disruption, unauthorized draining. 12 ill.

Description

The utility model relates to the designs of shut-off devices, and is a drain valve for draining water from a pipeline back to a source of frost protection, for example, for winter well shutdown or in case of system repair. The growing need for domestic water supply systems, in particular from wells and wells, and the volume of production of the corresponding equipment require the expansion of the arsenal and the improvement of technical means intended for the implementation of this purpose.

Known drain valve for submersible borehole pumps, containing a housing with a radial hole, a nut and a membrane, characterized in that the membrane is made of an elastic material, and between the membrane and the nut there is a washer, the hole diameter of which corresponds to the value of the predetermined pressure of the destruction of the membrane, taking into account the resistance of its material tensile (RU 111885)

Known drain valve, including a housing with inlet and outlet openings, inside of which there is a lever with a locking element, a weight, a bolt and a nut with the possibility of supporting one of the parts of the lever on the generatrix of the inner surface of the housing located on the opposite side of the seat and with the possibility of closing the locking element when increase in flow by the pump at the moment of the admissible minimum flow, one end of the lever is pivotally connected to the body, and the other is bent, the drain is made in the form of a drain tube with a seat placed on the side surface of the body, a fork, while the seat and the surface of the locking element in contact with it are made flat, the drain tube with a seat, the lever and the plug are made of plastic, characterized in that the lever is equipped with a liquid flow divider acting on the weight, while at high pressure above the valve the divider is installed on the lower side of the lever, and at pressure above the valve within the range between high and low set above g weight on the thickness of the washer, and at low pressure above the valve, the lever is equipped with an additional fluid flow divider acting on the weight, installed above the weight on the thickness of the washer.

The part of the lever, made with the possibility of resting on the generatrices of the inner surface of the housing located on the opposite side from the seat, is made of a permanent magnet (RU 2320826)

A drain valve is known, comprising a housing with inlet and outlet openings, inside which there is a lever with a locking element, one end of the lever is pivotally connected to the housing, and the other is bent, a drain made in the form of a drain tube with a seat placed on the side surface of the housing, a plug that differs by the fact that the lever is equipped with a weight with the possibility of supporting the weight on the generatrices of the inner surface of the body located on the opposite side of the seat and with the possibility of closing the locking element with an increase in pumping at the moment of the admissible minimum feed, the seat and the contact surface of the locking element with the seat are made flat, the seat , lever and fork are made of plastic (RU 2222671 prototype).

The disadvantage of this analogue is the possibility of water infiltration under conditions when the pressure is not enough to press the inclined locking element to the saddle, which is the reason for its low reliability.

The technical problem to be solved by the present technical solution is to expand the arsenal and improve the efficiency of such technical means that provide water supply from wells, namely, drain valves.

The technical result achieved through the use of the claimed technical solution is to create an alternative design of the drain valve that drains from the water supply equipment from the well, and also has high reliability and durability, as it does not allow water supply disruption, unauthorized water drain and allows you to visually control the accuracy mutual position of the main parts.

The essence of the utility model is that the drain valve comprises a body, a flat shutter with an elastic gasket installed with the possibility of interacting with the shutter seat, made with a hole for the passage of fluid, as well as a rotary lever pivotally mounted on an axis in the wall of the body, mounted with the possibility movement of the shutter, while the body is made composite of the upper and lower parts with through stepped holes and annular walls, is equipped with an insert with an annular wall, and the shutter is equipped with a pressure rod and a tail located on both sides of it, in the upper part of the body together with its annular wall a through guide sleeve is made with a hole for the tail part of the shutter, and the insert has a hollow internal jumper, in which the annular seat of the shutter is made and a through transverse channel passing through the annular wall of the insert for accommodating the lever, moreover, in the hole of the specified seat with the possibility of axial translational displacement, there is a push rod of the shutter, supported by its end on a rotary lever, made at one end with a connecting element for traction, and at the other end - equipped with an axis mounted on a support in the housing wall.

Preferably, the valve seat is made with radial slots around its hole for the valve push rod, and the guide bush is made with radial slots around its hole for the tail of the valve.

Preferably, the valve body is made of composite upper and lower parts coaxially screwed together.

Preferably, the upper and lower parts of the housing are each provided with a compression fitting at one end, consisting of a nut, a collet, a retaining ring and an o-ring, for connecting the pipe connected to the consumer and the pressure pipe of the pump.

Preferably, the axis of the rotary lever is pivotally mounted on a support formed by grooves made in the side protrusions on the mating edges of the body parts, and a ledge of the through transverse channel of the insert.

Preferably, the housing is made with a side window for attaching the rod to the connecting element of the lever, made in the form of an eyelet.

Preferably, the valve stem rests freely with its rounded end on a flat pivot arm.

Preferably, the insert has ribs for attaching the inner web to its annular wall.

Preferably, the insert is provided with rubber rings for sealing at the top and bottom of the housing.

The drawing Fig.1 shows a drain valve, left view, figure 2 - section A-A in figure 1, figure 3 - section B-B in figure 2, figure 4 is a diagram of the operation of connecting the drain valve to submersible pump and to the pipe connected to consumers, figure 5 is a diagram of the operation of connecting the cord to the drain valve lever, figure 6 is a diagram of the operation of connecting the free end of the cord to the plug of the borehole head, figure 7 is the layout of the drain valve in the casing pipe, Fig.8 - upper part of the body, Fig.9 - lower part of the body, Fig.10 - insert, Fig.11 - lever, Fig.12 - shutter.

The drawings indicate

1 - upper part of the body;

2 - lower part of the body;

3 - collet nut;

4 - insert;

5 - collet;

6 - retaining ring;

7 - lever;

8 - shutter;

9 - axis of the lever;

10 - grooves of parts 1, 2 of the body for axis 9;

11 - shutter gasket;

12 - seal insert 4;

13 – insert seal 4;

14 - collet seal;

15 - screws for connecting parts 1, 2 of the body;

16 - through transverse channel insert 4;

17 - housing window;

18 - submersible pump;

19 - cord;

20 - casing pipe;

21 - tail of the shutter 8;

22 - shutter push rod 8;

23 - valve seat 8;

24 - eye of the lever 7;

25 - central jumper insert 4;

26 - guide sleeve for the tail 21 of the shutter 8;

27 - inner edge of the insert 4;

28 - pipe connected to consumers;

29 - pipe connected to the pump 18;

30 – borehole tip;

31 – borehole cap.

All parts of the valve are made of chemically passive polymer material.

The drain valve has a composite body of the upper part 1 and the lower part 2 tightened together by screws 15.

The upper 1 and lower 2 parts each have built-in compression fittings on the outside (from the free end), consisting of a nut 3, a collet 5, a retaining ring 6 and an o-ring 14.

The compression fitting of the upper part 1 is designed to connect a pressure pipe 28 with a diameter of 32 mm, connected to consumers.

The compression fitting of the lower part 2 is designed to connect a pressure pipe 29 with a diameter of 32 mm connected to the pump.

Each compression fitting consists of a nut 3, a collet 6, a retaining ring 7, an o-ring 15.

The valve has a flat seal 8 with an elastic (rubber) gasket 11, installed with the possibility of interaction with the annular seat 23 of the shutter 8. The seat 23 is made with a hole for the passage of fluid, having a contour with radial grooves.

On the axis 9 in the wall of the housing, a lever 7 is hinged, mounted with the possibility of rotation and movement of the shutter 8.

The shutter 8 is made with a cylindrical tail 21 and with a pressure rod 22, coaxially located on opposite sides of the shutter 8.

Insert 4 is placed in the housing in coaxially joined sections of the holes of its parts 1 and 2, which is conjugated with the walls of parts 1 and 2 of the housing with its annular walls.

The guide sleeve 26 in the upper part 1 of the body is made with radial grooves around its through hole for the tail part 21 of the shutter 8 and is connected integrally with the wall of the upper part 1 of the body with ribs. When this tail 21 of the shutter 8 and the guide sleeve 26 are associated with each other with the formation of a movable connection.

In the insert 4 there is a diametrically hollow inner central web (sleeve) 25 box-shaped, in the upper (Fig.10) wall of which, i.e. from the side of its junction with the upper part of the body 1, there is an annular seat 23 of the shutter 8. The saddle 23 is made in the form of an annular belt with radial grooves around its through hole for the pressure rod 22 of the shutter 8.

At the same time, in the insert 4, a through transverse channel 16 is made passing through its annular wall and the jumper (sleeve) 25 for the passage of the fluid medium and the angular movement of the lever 7 on its axis 9. The channel 16 has geometric parameters (depth and width) sufficient to accommodate and turning the lever 7 at an angle that ensures the separation of the shutter 8 together with the gasket 11 from the seat 23.

In the hole of the specified saddle 23 with the possibility of axial translational movement there is a pressure rod 22 of the shutter 8, supported by a rounded free end on the rotary lever 7, made at one end with an eye 24, which is a connecting element for flexible traction (cord 19), and at the other end with axis 9, mounted on a support in the wall of the housing.

The axis 9 of the rotary lever 7 is mounted on a support formed in the housing wall by grooves 10 made in the side protrusions on the mating edges of the first and second parts 1,2 of the housing, and by a ledge (not indicated) through the transverse channel 16 of the insert 4. This design ensures simplicity and reliability of the installation operation of the lever 7 when assembling the valve and control of the relative position of the main parts.

The body is made with a side window 17 connected to the transverse channel 16, for access and fastening to the connecting element - the eye 24 of the lever 7 of the flexible traction (cord) 19. The lever 7 is made with the length necessary so that its end with the eye 24 protrudes from body through the window 17 formed by the corresponding recesses at the junction of parts 1 and 2 of the body from the side of the body opposite the grooves 10. This provides external access for attaching to the eye 24 of the flexible traction (cord) 19.

The pressure rod 22 of the shutter 8 is freely supported by a rounded end on a flat rotary lever 7.

In the upper part of the housing 1, four internal diametrically located ribs are made integral with the axial guide bushing 26 for the tail part 21 of the shutter 8.

Insert 4 has internal parallel ribs 21 for fixing jumper 25 with seat 23 to its annular wall.

Insert 4 is equipped with rubber rings 13,14 for sealing in the upper and lower parts 1, 2 of the body.

The drain valve is operated as follows.

The factory-assembled drain valve is mounted in the casing pipe 20 of the well. The drain valve is installed in the section of the pressure HDPE pipe with a diameter of 32 mm through the built-in compression fittings on the upper 1 and lower 2 parts of the body.

The installation site of the drain valve must be below the freezing depth, when installed in a pipe section 29 no deeper than 5 meters from the ground level, in order to eliminate the difficulties of opening it.

A pipe 28 is connected to the compression fitting (collet connection) of the upper part 1 of the drain valve body, which is connected to consumers.

A pressure pipe 29 connected to a submersible pump 18 is connected to the compression fitting (collet connection) of the lower part 2 of the drain valve body.

Then the cord 19 is tied to the eye 24 of the lever 7. The free end of the cord 19 is fixed, for example, on the plug 31 of the borehole head 30 or on the surface so that it is not stretched

When the pump 18 is operating, liquid (water) under pressure is supplied by it from the well into the pipe 29 and through the inventive drain valve through the pipe 28 to the consumer (consumers). In this case, the shutter 8 of the valve and its seat 23 are normally open, the valve is in a passive state and does not create significant resistance to the flow of water. The grooves of the guide sleeve 26 (around its opening for the tail part 21 of the gate 8) and the grooves of the seat 23 (around its opening for the stem 22 of the gate 8) prevent clogging and jamming of the gate 8 when fine solid particles (sand) and other contaminants pass through check valve.

For proper maintenance and / or repair work with the consumer's equipment, it is necessary to drain the water through the pipeline 28 in a timely manner. In this case, the pump 18 must be turned off and it is necessary to force the opening of the seat 23 of the shutter 8 of the drain valve, which is under the pressure of a column of liquid (water).

The movement and opening of the shutter 8 is controlled by a cord 19 and a lever 7, the axis 9 of which is rotatably fixed in the grooves 10 between the two parts of the body. The lever 7, rising to the top, pushes the valve 8 with a rubber gasket 11, while the saddle 23 opens into the channel 16 and into the window 17 of the body to drain water into the casing 20 from the pipeline 28. The lever 7 is mounted on the axis 9 with the ability to rotate under the action flexible rod 19 and thus the impact on the pressure rod 22 of the shutter 8 of the valve, equipped with a rubber gasket 11.

Since the gate of the valve, when it is located in the casing pipe below its cover (head 30 of the well), it is constantly under the pressure of a column of liquid (water). When the pump 18 is off, the valve provides complete isolation of the aquifer from the necessary engineering networks; overflow of water from consumers is not allowed, the wellhead is constantly ventilated, the service life of pumps and wells increases several times and, consequently, the number of repairs, construction and liquidation of wells decreases several times.

The drain valve has small dimensions, has increased reliability and durability, as it does not allow corrosion and allows you to control the accuracy of the relative position of the main parts.

Thus, as a result of the implementation of the claimed utility model, an alternative original drain valve is created, which has high reliability and durability, since it does not allow water supply disruption, unauthorized draining, the possibility of implementing its function and inexpensive small-scale production.

Claims (9)

1. Drain valve containing a housing, a flat valve with an elastic gasket installed to interact with the valve seat, made with a hole for the passage of the fluid, as well as pivotally mounted on the axis in the wall of the housing, a rotary lever mounted to move the valve, characterized in that that the housing is made composite of the upper and lower parts with through stepped holes and annular walls, is equipped with an insert with an annular wall, and the shutter is equipped with a pressure rod and a tail part located on both sides of it, while in the upper part of the housing, together with its annular wall, a through guide bushing with a hole for the tail part of the shutter, and the insert has a hollow internal jumper, in which the annular seat of the shutter is made and a through transverse channel passing through the annular wall of the insert for accommodating the lever, and in the hole of the specified saddle with the possibility of axial translational movement is placed a push rod of the shutter, supported by its end on a rotary lever, made at one end with a connecting element for traction, and at the other end is provided with an axis mounted on a support in the housing wall. 2. The valve according to claim 1, characterized in that the valve seat is made with radial grooves around its hole for the shutter pressure rod, and the guide sleeve is made with radial grooves around its hole for the tail part of the shutter. 3. The valve according to claim 1, characterized in that the valve body is made of a composite of the upper and lower parts coaxially tightened together by screws. 4. The valve according to claim 1, characterized in that the upper and lower parts of the body are each equipped at one end with a compression fitting, consisting of a nut, a collet, a retaining ring and a sealing ring, for connecting a pipe connected to the consumer and a pressure pipe of the pump. 5. The valve according to claim 1, characterized in that the axis of the rotary lever is pivotally mounted on a support formed by grooves made in the side protrusions on the mating edges of the body parts, and a ledge of the through transverse insert channel. 6. The valve according to any one of claims 1 to 5, characterized in that the body is made with a side window for attaching the rod to the connecting element of the lever, made in the form of an eye. 7. The valve according to any one of claims 1 to 5, characterized in that the valve stem is freely supported by a rounded end on a flat rotary lever. 8. The valve according to any one of claims 1 to 5, characterized in that the insert has ribs for fastening the inner web to its annular wall. 9. The valve according to any one of claims 1 to 5, characterized in that the insert is provided with rubber rings for sealing in the upper and lower parts of the housing.

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