CN214618038U

CN214618038U - Pressure-reducing reflux valve

Info

Publication number: CN214618038U
Application number: CN202120881126.XU
Authority: CN
Inventors: 王哲臻
Original assignee: Heli Valve Co ltd
Current assignee: Heli Valve Co ltd
Priority date: 2021-04-27
Filing date: 2021-04-27
Publication date: 2021-11-05
Anticipated expiration: 2031-04-27

Abstract

The utility model discloses a decompression backward flow valve, which comprises a valve body, the inside of valve body is provided with first cavity and second cavity, the inside table wall sliding connection of first cavity has first slide and second slide, be provided with the spring between first slide and the second slide, the both ends of spring respectively with the table wall fixed connection of first slide and second slide. The utility model discloses in, through setting up spacing post, the axostylus axostyle, mutually supporting of gag lever post and spacing groove, can realize carrying out pressure protection according to different water pressures and adjust, moreover, the steam generator is simple in structure, high durability and convenient operation, when using, when needing different pressure protection, rotate the gag lever post in the L shape through-hole in the spacing post to the rectangle through-hole in, remove to the direction that is close to the valve body again, make the gag lever post drive the axostylus axostyle and extrude the second slide downwards in the inside of first cavity, thereby change the coefficient of elasticity of spring, just so can increase pressure protection.

Description

Pressure-reducing reflux valve

Technical Field

The utility model relates to the technical field of valves, especially, relate to a pressure reduction reflux valve.

Background

The pressure reducing reflux valve is in the pipeline that is transported liquid by the pump body, especially in the water supply pipeline, the superpressure phenomenon often appears in the pipeline, in order to prevent high pressure to destroy the pipeline, all need to adopt the relief safety measure in the pipeline, the safety measure who adopts at present is: the microcomputer is used for controlling the rotating speed of the motor for driving the water pump, when overpressure occurs in a pipeline, the rotating speed of the motor is reduced, and water feeding into the pipeline is reduced until stopping.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: in order to solve the problems, a pressure reducing reflux valve is provided.

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

the utility model provides a decompression backward flow valve, includes the valve body, the inside of valve body is provided with first cavity and second cavity, the inside table wall sliding connection of first cavity has first slide and second slide, be provided with the spring between first slide and the second slide, the both ends of spring respectively with the table wall fixed connection of first slide and second slide, the second slide is kept away from a side table wall of spring rotates and is connected with the axostylus axostyle, table wall fixedly connected with spacing post on the valve body top, open end one side of axostylus axostyle runs through the valve body with spacing post, and extend to the inside of spacing post, an open end side table wall fixedly connected with gag lever post of axostylus axostyle, the spacing post runs through in extending vertical direction and is provided with a plurality of spacing grooves of evenly distributed.

As a further description of the above technical solution:

the limiting groove is composed of a rectangular through hole and a plurality of L-shaped through holes which extend to the vertical direction of the limiting column and are evenly distributed, the rectangular through hole is communicated with the L-shaped through holes, and the limiting rod is arranged in the L-shaped through holes.

As a further description of the above technical solution:

a connecting rod is fixedly connected to one side surface wall of the first sliding plate, which is far away from the spring, an open end of the connecting rod penetrates through the first cavity and extends to the inside of the second cavity, and a valve core is fixedly connected to the open end of the connecting rod.

As a further description of the above technical solution:

the upper surface wall of the bottom in the first cavity is fixedly connected with elastic components which are uniformly distributed on two sides of the connecting rod, the top of each elastic component is fixedly connected with a supporting plate, the supporting plate is in sliding connection with the inner surface wall of the first cavity, one side of the supporting plate, which is far away from the elastic components, is in contact with the first sliding plate, and a rubber pad is attached to the surface wall of one side, which is close to the first sliding plate, of the supporting plate.

As a further description of the above technical solution:

the bottom of the valve body is provided with a water inlet in a penetrating mode, one side of the outer portion of the valve body is provided with a water outlet in a penetrating mode, and the valve core is arranged inside the water inlet.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

in the utility model, the pressure protection adjustment can be realized according to different water pressures by arranging the mutual matching of the limiting post, the shaft lever, the limiting rod and the limiting groove, the structure is simple, the operation is convenient, the cost is reduced, the popularization is easy, when in use, when different pressure protection is needed, the limiting rod in the L-shaped through hole in the limiting column is rotated into the rectangular through hole and then moves towards the direction close to the valve body, so that the limiting rod drives the shaft lever to downwards extrude the second sliding plate in the first chamber, thereby changing the elastic coefficient of the spring, so that the pressure protection can be increased, and when the pressure protection fails in the using process, when the pressure source at the water inlet is suddenly cut off, the connecting rod is suddenly rebounded under the action of the spring to easily damage the valve core, therefore, the elastic assembly arranged in the first chamber can weaken the impact force of the spring to a certain extent, and the damage to the valve core is avoided.

Drawings

FIG. 1 is a schematic diagram illustrating a front cross-sectional view of a reflux valve according to an embodiment of the present invention;

fig. 2 is a schematic diagram illustrating a back structure of a backflow valve according to an embodiment of the present invention;

fig. 3 shows an enlarged schematic structural diagram at a provided according to an embodiment of the present invention;

fig. 4 shows an enlarged schematic structural diagram of a shaft rod provided according to an embodiment of the present invention.

Illustration of the drawings:

1. a valve body; 2. a first chamber; 3. a second chamber; 4. a first slide plate; 5. a second slide plate; 6. a spring; 7. a connecting rod; 8. a valve core; 9. a limiting column; 10. a shaft lever; 11. a limiting rod; 12. a limiting groove; 13. an elastic component; 14. a resisting plate; 15. a water inlet; 16. and (7) a water outlet.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: the utility model provides a decompression backward flow valve, including valve body 1, the inside of valve body 1 is provided with first cavity 2 and second cavity 3, the inside table wall sliding connection of first cavity 2 has first slide 4 and second slide 5, be provided with spring 6 between first slide 4 and the second slide 5, the both ends of spring 6 respectively with first slide 4 and second slide 5's table wall fixed connection, one side table wall rotation that spring 6 was kept away from to second slide 5 is connected with axostylus axostyle 10, table wall fixedly connected with spacing post 9 on the valve body 1 top, open end one side of axostylus axostyle 10 runs through valve body 1 and spacing post 9, and extend to the inside of spacing post 9, open end one side table wall fixedly connected with gag lever post 11 of axostylus axostyle 10, spacing post 9 extends to run through a plurality of spacing grooves 12 that are provided with evenly distributed in the vertical direction.

Specifically, as shown in fig. 1 and 2, the limiting groove 12 is formed by a rectangular through hole and a plurality of L-shaped through holes uniformly distributed along the vertical direction of the limiting post 9, the rectangular through hole and the L-shaped through holes are communicated with each other, and the limiting rod 11 is disposed in the L-shaped through hole.

Specifically, as shown in fig. 1, a connecting rod 7 is fixedly connected to a side surface wall of the first sliding plate 4 away from the spring 6, an open end of the connecting rod 7 extends through the first chamber 2 to the inside of the second chamber 3, and a valve core 8 is fixedly connected thereto.

Specifically, as shown in fig. 1 and 3, the upper surface wall of the bottom inside the first chamber 2 is fixedly connected with elastic components 13 uniformly distributed on two sides of the connecting rod 7, the top of the elastic component 13 is fixedly connected with a resisting plate 14, the resisting plate 14 is slidably connected with the inner surface wall of the first chamber 2, one side of the resisting plate 14, which is far away from the elastic component 13, is in contact with the first sliding plate 4, and one surface wall of the resisting plate 14, which is close to the first sliding plate 4, is coated with a rubber pad.

Specifically, as shown in fig. 1 and 2, a water inlet 15 is formed through the bottom of the valve body 1, a water outlet 16 is formed through one side of the outside of the valve body 1, and the valve element 8 is arranged inside the water inlet 15.

The working principle is as follows: during the use, when needing different pressure protection, with gag lever post 11 rotation to the rectangle through-hole in the L shape through-hole in the spacing post 9, remove to the direction that is close to valve body 1 again, make gag lever post 11 drive axostylus axostyle 10 in the inside extrusion second slide 5 downwards of first cavity 2, thereby change spring 6's coefficient of elasticity, just so can increase pressure protection, and when breaking down in the use, the pressure source of water inlet 15 department is when ending suddenly, connecting rod 7 is rebounded suddenly under spring 6's effect, easily hinder case 8, elastic component 13 that 2 sets up in first cavity like this can weaken spring 6's impact force to a certain extent, avoid case 8 damage.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A pressure-reducing backflow valve comprises a valve body (1), and is characterized in that a first chamber (2) and a second chamber (3) are arranged inside the valve body (1), a first sliding plate (4) and a second sliding plate (5) are connected to the inner surface wall of the first chamber (2) in a sliding manner, a spring (6) is arranged between the first sliding plate (4) and the second sliding plate (5), two ends of the spring (6) are fixedly connected with the surface walls of the first sliding plate (4) and the second sliding plate (5) respectively, one side surface wall, far away from the spring (6), of the second sliding plate (5) is rotatably connected with a shaft rod (10), the upper surface wall at the top of the valve body (1) is fixedly connected with a limiting column (9), one side of an open end of the shaft rod (10) penetrates through the valve body (1) and the limiting column (9) and extends into the limiting column (9), the limiting rod (11) is fixedly connected to one side surface wall of the open end of the shaft rod (10), and a plurality of limiting grooves (12) which are uniformly distributed are arranged in the limiting column (9) in a penetrating mode along the vertical direction.

2. A pressure reducing reflux valve according to claim 1, characterized in that the limiting groove (12) is formed by a rectangular through hole and a plurality of L-shaped through holes evenly distributed along the vertical direction of the limiting post (9), the rectangular through hole and the L-shaped through holes are communicated with each other, and the limiting rod (11) is arranged in the L-shaped through holes.

3. A pressure reducing return valve according to claim 1, characterised in that a connecting rod (7) is fixedly connected to a side wall of the first slide plate (4) remote from the spring (6), and the open end of the connecting rod (7) extends through the first chamber (2) to the interior of the second chamber (3) and is fixedly connected to a valve spool (8).

4. A pressure reducing reflux valve according to claim 3, characterized in that the upper surface wall of the bottom in the first chamber (2) is fixedly connected with elastic components (13) uniformly distributed on both sides of the connecting rod (7), the top of the elastic components (13) is fixedly connected with a resisting plate (14), the resisting plate (14) is slidably connected with the inner surface wall of the first chamber (2), one side of the resisting plate (14) far away from the elastic components (13) is contacted with the first sliding plate (4), and one side of the surface wall of the resisting plate (14) near the first sliding plate (4) is coated with a rubber pad.

5. A pressure reducing return valve according to claim 3, characterized in that a water inlet (15) is arranged through the bottom of the valve body (1), a water outlet (16) is arranged through the outer side of the valve body (1), and the valve core (8) is arranged inside the water inlet (15).