CN216743004U

CN216743004U - Backflow prevention valve capable of reducing pollution

Info

Publication number: CN216743004U
Application number: CN202220109571.9U
Authority: CN
Inventors: 舒诗情; 舒建平
Original assignee: Hangzhou Huili Technology Co ltd
Current assignee: Hangzhou Huili Technology Co ltd
Priority date: 2022-01-17
Filing date: 2022-01-17
Publication date: 2022-06-14
Anticipated expiration: 2032-01-17

Abstract

The utility model discloses a backflow prevention valve capable of reducing pollution, which comprises a valve body and a valve core, wherein the valve core is connected with the inner wall of the valve body in a sliding manner, the inner wall of the valve body is provided with a boss, the inner wall of the valve body is provided with a stop block used for preventing the valve core from falling off, a pressure spring used for pressing the valve core on the boss is arranged between the stop block and the valve core, the stop block is connected with a plurality of sliding legs in a sliding manner, one ends of the sliding legs are fixedly arranged on the valve core, and a leakage net is arranged between the other ends of the sliding legs; the sliding foot and the leakage net are added on the basis of the one-way valve, when water flows through the leakage net, the leakage net can be driven to move towards the direction of the water flow, the leakage net is thrust by the water flow and acts on the sliding foot, the sliding foot applies force to the valve core, when backflow occurs, the water flow pushes the leakage net to move, the leakage net applies the force of the water flow to the sliding foot, and the sliding foot is fixedly arranged on the valve core, so that the pressure of the valve core on the boss is increased, and the original backflow prevention effect is enhanced.

Description

Backflow prevention valve capable of reducing pollution

Technical Field

The utility model relates to the technical field of valves, in particular to a backflow preventing valve capable of reducing pollution.

Background

In the production and manufacturing process, a large amount of sewage is usually generated, before the sewage is discharged, the sewage needs to be purified and then discharged, and the purified water needs to be prevented from flowing back to the sewage and being polluted again; or in some liquid manufacturing processes, it is desirable to prevent the backflow of less pure liquid into the raw liquid container. For preventing liquid refluence, not contaminated once more, the problem of liquid refluence can be solved to current check valve, but check valve backflow prevention is not rapid enough, has a small amount of weeping phenomenon, uses for a long time, also can wear and tear, appears the gap between case and the valve body, leads to preventing the backflow effect variation, prevents that the backflow effect is ideal inadequately. Therefore, the problems of poor backflow prevention effect and liquid leakage of the check valve need to be solved.

SUMMERY OF THE UTILITY MODEL

In order to solve at least one of the technical problems mentioned in the background art, an object of the present invention is to provide a backflow prevention valve capable of reducing pollution, which solves the problem of poor backflow prevention effect of a check valve.

In order to achieve the purpose, the utility model provides the following technical scheme:

the backflow prevention valve capable of reducing pollution comprises a valve body and a valve core in sliding connection with the inner wall of the valve body, wherein a boss is arranged on the inner wall of the valve body, a stop block used for preventing the valve core from being disengaged is arranged on the inner wall of the valve body, a pressure spring used for pressing the valve core on the boss is arranged between the stop block and the valve core, and a leakage net is arranged at one end, far away from the boss, of the valve core.

Compared with the prior art, the utility model has the beneficial effects that:

the valve core, the valve body, the stop block and the pressure spring can realize the effect of the existing one-way valve, can prevent a large amount of liquid from flowing backwards, can stop most of liquid, and has the effect of primary sealing; on this basis increase the runner and leak the net, when rivers were through leaking the net, can drive and leak the net and remove to the direction of rivers, leak the net and receive the thrust of rivers, act on the runner, make the runner with the power on the case, when taking place to flow backwards, rivers promote to leak the net and remove, leak the net and act on the runner with the power of rivers, because the runner sets firmly on the case, increase the pressure of case on the boss, strengthen original anti-backflow effect.

Preferably, the strainer is made of flexible materials, and a plurality of small holes are arranged on the surface of the strainer in a penetrating mode.

Preferably, the valve core comprises a sealing block and a sleeve fixedly arranged on the sealing block, and the sealing block is provided with an inclined surface used for abutting against the boss.

Preferably, the inner wall of the valve body is provided with a water passing groove, and the inner wall of the sleeve is provided with a plurality of water passing holes communicated with the water passing groove.

Preferably, the water passing groove is adjacent to the boss, the boss is located at one end of the sealing block, and the water passing groove is located on the outer side of the sleeve.

Preferably, the check block is slidably connected with a plurality of sliding feet, and two ends of the sliding feet are respectively and fixedly arranged on the valve core and the leakage net.

Preferably, the stopper has an L-shaped cross section.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a cross-sectional view of the present invention;

fig. 3 is a partially enlarged view of fig. 2 "a".

In the figure:

1. a valve body; 11. a boss; 12. passing through a water tank; 2. a valve core; 21. water passing holes; 3. a stopper; 4. a sliding foot; 41. a leakage net; 5. and (5) pressing a spring.

Detailed Description

The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to the drawings, the embodiment provides a backflow prevention valve capable of reducing pollution, which includes a valve body 1 and a valve core 2 slidably connected to an inner wall of the valve body 1, wherein a boss 11 is disposed on the inner wall of the valve body 1, a stopper 3 for preventing the valve core 2 from coming off is disposed on the inner wall of the valve body 1, a pressure spring 5 for pressing the valve core 2 on the boss 11 is disposed between the stopper 3 and the valve core 2, and a leakage net 41 is disposed at one end of the valve core 2 away from the boss; the valve core 2, the valve body 1, the stop block 3 and the pressure spring 5 can realize the effect of the existing one-way valve, can prevent a large amount of liquid from flowing backwards, can block most of liquid, and has the effect of primary sealing; increase on this basis and leak net 41, when rivers were through leaking net 41, can drive and leak net 41 and remove to the direction of rivers, leak net 41 receives the thrust of rivers, is used in on case 2, and when taking place the refluence, rivers promote to leak net 41 and remove, and leak net 41 drives case 2 and removes, increases the pressure of case 2 on boss 11, strengthens original anti-backflow effect.

In this embodiment, the strainer 41 is made of a flexible material, and has a plurality of small holes through its surface, so that water can pass through the strainer conveniently, and the runner 4 can generate a certain acting force on the valve element 2 under the action of the water.

In this embodiment, the valve element 2 includes a sealing block and a sleeve fixedly arranged on the sealing block, the sealing block is a circular truncated cone, an inclined surface of the circular truncated cone abuts against the boss 11, and the sealing element abuts against the boss 11 under the action of the pressure spring 5, so that a sealing effect is achieved.

In this embodiment, the inner wall of the valve body 1 is provided with a water passing groove 12, and the inner wall of the sleeve is provided with a plurality of water passing holes 21 communicated with the water passing groove 12; the positive flow water flows into the water tank 12 through a gap between the sealing element and the boss 11, then flows into the sleeve through the water through hole 21, and finally flows out of the valve core 2.

In this embodiment, the water passing groove 12 is adjacent to the boss 11, the boss 11 is located at one end of the sealing block, and the water passing groove 12 is located outside the sleeve.

In this embodiment, the stopper 3 is slidably connected to a plurality of sliding legs 4, and two ends of each sliding leg 4 are respectively and fixedly disposed on the valve core 2 and the drain net 41; the sliding foot 4 penetrates through the stop block 3 to prevent the leakage net 41 from blocking the pressure spring 5.

The cross section of the stop block 3 is L-shaped, so that the valve core 2 is prevented from sliding out of the valve body 1 due to overlarge water flow.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims

1. The backflow prevention valve capable of reducing pollution comprises a valve body (1) and a valve core (2) which is connected with the inner wall of the valve body (1) in a sliding mode, and is characterized in that a boss (11) is arranged on the inner wall of the valve body (1), a stop block (3) used for preventing the valve core (2) from being separated is arranged on the inner wall of the valve body (1), a pressure spring (5) used for pressing the valve core (2) on the boss (11) is arranged between the stop block (3) and the valve core (2), and a leakage net (41) is arranged at one end, far away from the boss, of the valve core (2).

2. A backflow prevention valve with reduced pollution as claimed in claim 1, wherein said screen (41) is made of flexible material and has a plurality of small holes through its surface.

3. A backflow prevention valve with reduced pollution according to claim 1, characterised in that said cartridge (2) comprises a sealing block and a sleeve fixed to said sealing block, said sealing block being provided with an inclined surface for abutment on said boss (11).

4. A backflow prevention valve with reduced pollution as claimed in claim 3, wherein the inner wall of said valve body (1) is provided with a water passing groove (12), and the inner wall of said sleeve is provided with a plurality of water passing holes (21) communicating with the water passing groove (12).

5. A contamination reduction backflow prevention valve according to claim 4, wherein the water passing groove (12) is adjacent to the boss (11), the boss (11) is located at one end of the sealing block, and the water passing groove (12) is located outside the sleeve.

6. The backflow prevention valve capable of reducing pollution according to claim 1, wherein the stopper (3) is slidably connected with a plurality of sliding feet (4), and two ends of each sliding foot (4) are respectively and fixedly arranged on the valve core (2) and the leakage net (41).

7. A backflow prevention valve with reduced pollution according to claim 6, characterised in that said block (3) has an L-shaped section.