CN212026483U

CN212026483U - Pressure water tank drainage valve

Info

Publication number: CN212026483U
Application number: CN201922353641.6U
Authority: CN
Inventors: 黄炳兴; 张东生; 戴金定
Original assignee: Xiamen Eco Flush Technology Co ltd
Current assignee: Xiamen Eco Flush Technology Co ltd
Priority date: 2019-12-24
Filing date: 2019-12-24
Publication date: 2020-11-27
Anticipated expiration: 2029-12-24

Abstract

The utility model discloses a pressure water tank drain valve, including lower valve barrel, gland and piston, it is inherent to descend the valve barrel constitute the water storage chamber between gland and the piston, the water storage intracavity is equipped with the outlet pipe, the outlet pipe switch-on the space of piston below, the gland top is equipped with the business turn over hole, still including being used for the shutoff the stagnant water diaphragm of outlet pipe, stagnant water diaphragm connection is in the gland lower part and will the water storage chamber divide into upper header and lower header, be equipped with the intercommunication on the stagnant water diaphragm the water hole of crossing of upper header and lower header. During water drainage, water in the upper water chamber is drained through the water inlet and outlet holes to be decompressed, and the pressure difference between the upper water chamber and the lower water chamber pushes the water stop membrane to deform upwards so as to open the water outlet pipe. The position of the water stop membrane in the drain valve is fixed, the sliding and abrasion are avoided, the sealing performance is good, the failure is not easy to occur, and the service life of the drain valve is effectively prolonged.

Description

Pressure water tank drainage valve

Technical Field

The utility model relates to a drain valve especially relates to a pressure tank drain valve.

Background

The existing pressure water tank drain valve adopts a structure opening mode of linkage of a large piston and a small piston, the small piston is arranged above the large piston, the small piston and a cylinder sleeve form an upper cavity, the large piston and the valve sleeve form a lower cavity, and the upper cavity is communicated with the lower cavity. During drainage, the upper chamber is drained and decompressed, then the pressure difference between the upper chamber and the lower chamber pushes the small piston to move upwards so as to open the lower chamber, so that water flows out of the lower chamber and the water pressure is reduced, and meanwhile, the pressure difference between the water tank and the lower chamber pushes the large piston to move upwards so as to open the water outlet of the water tank for drainage.

In order to ensure the sealing property, sealing elements are required to be arranged between the small piston and the lower chamber, between the small piston and the cylinder sleeve and between the small piston and the central conduit (the central conduit passes through the upper chamber and the lower chamber, and after the small piston opens the lower chamber, water in the lower chamber flows to the water outlet from the central conduit).

SUMMERY OF THE UTILITY MODEL

The utility model provides a pressure water tank drain valve, it has overcome the not enough that the background art exists. The utility model provides a technical scheme that its technical problem adopted is:

the pressure water tank drain valve comprises a lower valve sleeve, a gland and a piston, wherein the gland is positioned at the upper part of the lower valve sleeve, the piston is arranged at the lower part of an inner cavity of the lower valve sleeve in a vertically sliding manner, a water storage cavity is formed between the gland and the piston in the lower valve sleeve, a water outlet pipe is arranged in the water storage cavity and communicated with a space below the piston, a water inlet and outlet hole is formed in the top of the gland, the pressure tank drain valve also comprises a water stop diaphragm for plugging the water outlet pipe, the water stop diaphragm is connected to the lower part of the gland and divides the water storage cavity into an upper water chamber and a lower water chamber, and a water passing hole for communicating the; in the water stop state, the water stop membrane closes the water outlet pipe; during water drainage, water in the upper water chamber is drained through the water inlet and outlet holes to be decompressed, and the pressure difference between the upper water chamber and the lower water chamber pushes the water stop membrane to deform upwards so as to open the water outlet pipe.

Compared with the background technology, the technical scheme has the following advantages:

the water stopping diaphragm is arranged below the gland and used for plugging the water outlet pipe, the water stopping diaphragm can deform up and down, and the water outlet pipe is closed by the water stopping diaphragm under the state that the water tank is filled with water, so that the pressure in the upper water chamber and the lower water chamber is ensured, and the piston closes the water outlet of the water tank. If need the drainage, open the business turn over water hole on the gland, carry out the pressure release to last hydroecium, the pressure differential drive stagnant water diaphragm of two sides about the stagnant water diaphragm upwards warp to open the outlet pipe, the water of lower hydroecium can be followed the outlet pipe and is drained, thereby the final piston can upwards slide smoothly and open the delivery port of water tank. The invention controls the upward or downward deformation of the water stop membrane by utilizing the pressure change between the upper water chamber and the lower water chamber to achieve the aim of opening or closing the water outlet pipe, the position of the water stop membrane in the drain valve is fixed, the sliding abrasion condition is avoided, the sealing performance is good, the failure is not easy to occur, and the service life of the drain valve is effectively prolonged.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic view showing the water discharge valve of the pressure water tank of the present invention in a water stop state.

Fig. 2 is a schematic view showing the discharge valve of the pressurized water tank according to the present invention in a discharge state.

FIG. 3 is an enlarged schematic view of the circled position in FIG. 1.

Detailed Description

Referring to fig. 1 to 3, the drain valve of the pressurized water tank includes a lower valve housing 10, a gland 20, a piston 30, and a water stop diaphragm 40. The piston 30 is slidably disposed at the lower portion of the inner cavity of the lower valve housing 10, the gland 20 is disposed at the upper portion of the lower valve housing 10, a water storage cavity 50 is formed between the gland 20 and the piston 30 in the lower valve housing 10, and a water inlet and outlet hole 22 is disposed at the top of the gland 20. An outlet pipe 32 is arranged in the water storage cavity 50, and the outlet pipe 32 is communicated with the space below the piston 30 and can guide water to a water outlet of the water tank. The water stop membrane 40 is used for plugging the water outlet pipe 32, the water stop membrane is connected to the lower portion of the gland 20 and divides the water storage cavity 50 into an upper water chamber 52 and a lower water chamber 54, the gland 20 and the water stop membrane 40 enclose the upper water chamber 52, and the water stop membrane 40 is provided with a water through hole 42 communicated with the upper water chamber 52 and the lower water chamber 54.

When the water tank is filled with water, the water is injected into the water storage cavity 50 along the water inlet and outlet hole 22, the water stop membrane 40 deforms downwards and closes the water outlet pipe 32, and the water stop state is kept.

When drainage is needed, the water inlet and outlet hole 22 is opened, water in the upper water chamber 52 is drained and decompressed through the water inlet and outlet hole 22, the pressure difference between the upper water chamber 52 and the lower water chamber 54 pushes the water stop membrane 40 to deform upwards so as to open the water outlet pipe 32, water in the lower water chamber 54 is drained to the position below the piston from the water outlet pipe 32 and is drained along the water outlet of the water tank, and meanwhile, the pressure difference between the water tank and the lower water chamber 54 drives the piston 30 to move upwards so as to open the water outlet of the water tank for drainage.

The water stop diaphragm 40 is fixed below the gland 20, and the water outlet pipe 32 is plugged through self elastic deformation or the water outlet pipe 32 is opened, so that the abrasion of the water stop diaphragm 40 is effectively avoided, and the service life is prolonged.

Preferably, a spring 60 is further included, which is disposed in the upper water chamber 52, and the spring 60 applies a downward pushing force to the water-stopping membrane 40, so as to ensure that the water-stopping membrane 40 better blocks the water outlet pipe 32 in the city of sienna. Particularly, the water-stopping device further comprises a guide plate 70, the water-stopping membrane 40 is attached to the lower surface of the guide plate 70, and the guide plate 70 can enable the water-stopping membrane 40 to keep good flatness, so that the water-stopping membrane 40 can better seal the water outlet pipe 32. In this embodiment, the spring 60 is tensioned between the pressing cover 20 and the guide plate 70, which also prevents the water-stop membrane 40 from being deformed due to the direct pressing of the spring 60 on the water-stop membrane 40, and the situation that the sealing is not in place occurs. In addition, a hook 72 is arranged at the lower part of the guide plate 70, the hook 72 is hooked with the water stop membrane 70, and the hook 72 is inserted into the water outlet pipe 32 during water stop.

In this embodiment, the water outlet pipe 32 is a structure in which a plurality of sections of connecting pipes are inserted together, specifically, the water outlet pipe 32 is divided into an upper section, a middle section and a lower section of connecting pipes which are inserted together in sequence, and the lower section of connecting pipe is connected with the piston 30. The outlet pipe 32 is used for leading out the water in the lower water chamber 54, and therefore, can be integrally formed with the piston.

In order to make the water-stopping diaphragm 40 be positioned in the lower valve sleeve more firmly, the water-stopping diaphragm further comprises a clamping sleeve 80, and the clamping sleeve 80 is buckled with the gland 20 so as to be tightly pressed and fixed around the water-stopping diaphragm 40.

Preferably, the valve further comprises an upper valve sleeve 90, the upper valve sleeve 90 is in butt joint with the lower valve sleeve 10, a water inlet and outlet pipe 92 is arranged in the upper valve sleeve 90, the water inlet and outlet pipe 92 is in butt joint with the water inlet and outlet hole 22 of the gland 20, water is injected into the water storage cavity 50 from the water inlet and outlet pipe 92 during water inlet, and water in the water feeding chamber 52 is drained through the water inlet and outlet pipe 92 during pressure relief. Specifically, the top of the upper valve sleeve 90 is provided with a water inlet and outlet cavity 94, the upper end of the water inlet and outlet pipe 92 is communicated with the water inlet and outlet cavity 94, and the side wall of the water inlet and outlet cavity 94 is provided with a water inlet 96 and a water outlet 98.

The above description is only a preferred embodiment of the present invention, and therefore the scope of the present invention should not be limited by this description, and all equivalent changes and modifications made within the scope and the specification of the present invention should be covered by the present invention.

Claims

1. Pressure water tank drain valve, including lower valve barrel, gland and piston, the gland is located the upper portion of valve barrel down, the piston can set up with sliding from top to bottom in the lower part of lower valve barrel inner chamber, down the valve barrel is internal constitute the water storage chamber between gland and the piston, the water storage intracavity is equipped with the outlet pipe, the outlet pipe switch-on the space of piston below, the gland top is equipped with business turn over water hole, its characterized in that: the water-stopping diaphragm is connected to the lower part of the gland and divides the water storage cavity into an upper water chamber and a lower water chamber, and water passing holes communicated with the upper water chamber and the lower water chamber are formed in the water-stopping diaphragm;

in the water stop state, the water stop membrane closes the water outlet pipe;

during water drainage, water in the upper water chamber is drained through the water inlet and outlet holes to be decompressed, and the pressure difference between the upper water chamber and the lower water chamber pushes the water stop membrane to deform upwards so as to open the water outlet pipe.

2. A pressurized water tank discharge valve according to claim 1, characterized in that: the water-stopping device also comprises a spring arranged in the water feeding chamber, and the spring applies downward thrust to the water-stopping membrane.

3. A pressurized water tank discharge valve according to claim 2, characterized in that: the water-stopping membrane is attached to the lower surface of the guide plate.

4. A pressurized water tank discharge valve according to claim 3, characterized in that: the spring is tensioned between the gland and the guide plate.

5. A pressurized water tank discharge valve according to claim 3, characterized in that: the lower part of the guide plate is provided with a hook which is connected with the water stop membrane in a hanging manner, and the hook is inserted into the water outlet pipe during water stop.

6. A pressurized water tank discharge valve according to claim 1, characterized in that: the water outlet pipe and the piston are of an integral structure, or the water outlet pipe is formed by inserting a plurality of sections of connecting pipes together.

7. A pressurized water tank discharge valve according to claim 6, characterized in that: the water outlet pipe is divided into an upper section connecting pipe, a middle section connecting pipe and a lower section connecting pipe which are sequentially spliced together, and the lower section connecting pipe is connected with the piston together.

8. A pressurized water tank discharge valve according to claim 1, characterized in that: the water stop diaphragm is characterized by further comprising a clamping sleeve, and the clamping sleeve and the pressing cover are buckled together so as to tightly press and fix the periphery of the water stop diaphragm.

9. A pressurized water tank discharge valve according to claim 1, characterized in that: the valve is characterized by further comprising an upper valve sleeve, wherein the upper valve sleeve is in butt joint with the lower valve sleeve, a water inlet and outlet pipe is arranged in the upper valve sleeve, and the water inlet and outlet pipe is in butt joint with a water inlet and outlet hole of the gland.

10. A pressurized water tank discharge valve according to claim 9, characterized in that: the water inlet and outlet cavity is formed in the top of the upper valve sleeve, the upper end of the water inlet and outlet pipe is communicated with the water inlet and outlet cavity, and a water inlet and a water outlet are formed in the side wall of the water inlet and outlet cavity.