CN219221365U

CN219221365U - Heavy-calibre silence check valve

Info

Publication number: CN219221365U
Application number: CN202223193800.9U
Authority: CN
Inventors: 蒲昌烈
Original assignee: Hyou Shanghai Intelligent Technology Co ltd
Current assignee: Hyou Shanghai Intelligent Technology Co ltd
Priority date: 2022-11-30
Filing date: 2022-11-30
Publication date: 2023-06-20
Anticipated expiration: 2032-11-30

Abstract

The application relates to a large-caliber mute check valve, which comprises a valve body, an on-off assembly and a guide assembly, wherein the valve body is provided with a fluid space, an inlet and an outlet, and the inlet, the outlet and the fluid space are communicated with each other so that a fluid medium enters the fluid space through the inlet and is finally discharged from the outlet; the on-off assembly is arranged in the fluid space and can be used for on-off movement of a fluid medium in the valve body; the guide assembly is mounted to the on-off assembly to ensure that the on-off assembly moves along a predetermined trajectory. The check valve has the effect that the valve clack of the check valve works normally in horizontal pipeline installation.

Description

Heavy-calibre silence check valve

Technical Field

The application relates to the field of check valve manufacturing, in particular to a large-caliber mute check valve.

Background

Check valves are a fundamental component of fluid control engineering and are widely used. The device plays a role in protecting other fluid machines and pipelines by stopping the backflow of fluid. The mute check valve is a valve which can automatically open and close the valve clack by means of the flow of the medium and is used for preventing the medium from flowing backwards, and is also called a check valve, a one-way valve, a reverse flow valve and a back pressure valve. The check valve is an automatic valve and has the main functions of preventing medium from flowing backwards, preventing the pump and the driving motor from turning over and discharging the medium in the container. The check valve may also be used on a line to provide makeup to auxiliary systems where the pressure may rise above the system pressure.

The existing check valve is generally arranged in a vertical pipeline in which a fluid medium flows from bottom to top, and when the fluid medium reaches a certain pushing force, the valve clack is pushed to move upwards, and the fluid medium in the check valve flows from bottom to top. When the pushing force of the fluid medium is reduced, the valve clack is quickly closed, so that the impact sound caused by a water hammer can be prevented, and the silencing effect can be realized.

However, in a large-diameter pipeline, particularly a long-distance pipeline, a horizontal pipeline is generally used, and therefore, the installation mode of the check valve cannot meet the requirements. If the check valve is arranged in a horizontal pipeline, the valve clack and the valve rod can generate a sagging phenomenon under the action of gravity, so that a movement gap is generated between the valve rod and the shaft sleeve, and therefore, the axial lead of a movement assembly of the valve clack and the valve rod is inclined, an included angle is generated between the axial lead of a valve seat of the check valve and the axial lead of the valve seat of the check valve, the valve clack and the valve seat cannot be completely sealed, and the valve clack is opened or closed unevenly.

Disclosure of Invention

In order to make the check valve work normally in a horizontal pipeline installation, the present application provides a large caliber mute check valve.

The application provides a heavy-calibre silence check valve adopts following technical scheme:

the utility model provides a heavy-calibre silence check valve which characterized in that: comprising

The valve body is provided with a fluid space, an inlet and an outlet, and the inlet, the outlet and the fluid space are communicated with each other so that fluid medium enters the fluid space through the inlet and is finally discharged from the outlet;

an on-off assembly mounted to the fluid space, the on-off assembly capable of on-off movement of a fluid medium within the valve body, the on-off assembly comprising at least one valve stem, at least one valve flap and at least one valve seat, wherein the valve flap and the valve seat are in the same horizontal plane, the valve stem being movably mounted between the valve flap and the valve seat; and

the guide assembly is arranged on the on-off assembly and comprises a guide part, the guide part comprises a first guide hole, the first guide hole penetrates through the valve clack, and the valve rod penetrates through the first guide hole to extend out of the valve clack so as to ensure that the on-off assembly moves along a preset track.

Through adopting above-mentioned technical scheme, the break-make subassembly is installed in the valve body, can control the break-make of fluid medium in the valve body. The guide component is arranged on the on-off component, and can prevent the phenomenon that the valve clack is opened or closed unsmoothly due to the fact that the valve clack and the valve seat cannot be completely sealed due to the fact that the sounding is inclined when the valve body is arranged on the horizontal pipeline. The fluid medium can enter the fluid space through the inlet port and then be discharged from the outlet port. The valve rod is arranged between the valve clack and the valve seat, the valve seat is fixed on the valve body, and a gap is formed between the valve clack and the valve body in the moving process of the valve clack, so that fluid medium flows out of the gap. The valve rod can always move along a preset horizontal plane under the action of the first guide hole, and no deviation occurs.

Optionally, the on-off assembly further comprises a return spring, and the return spring is sleeved on the valve rod.

By adopting the technical scheme, when the flow of the fluid medium is gradually increased, the pushing force of the fluid medium is larger than the elastic force of the return spring, the return spring is compressed, and a gap is formed between the valve clack and the valve body, so that the fluid medium can flow through the gap.

Optionally, the guide part further comprises a second guide hole, and the second guide hole is opened on the valve seat.

Through adopting above-mentioned technical scheme, the valve rod can also remove along the second guiding hole, has further guaranteed the levelness of valve rod in the removal in-process.

Optionally, the guide assembly further includes two guide blocks, one of the guide blocks is mounted at one end of the valve rod extending out of the valve clack, and the other guide block is sleeved on the valve rod and located in the valve seat.

By adopting the technical scheme, the levelness of the valve rod in the moving process is further ensured by the two guide blocks.

Optionally, the inner diameter of the guide block is matched with the outer diameter of the valve rod.

Through adopting above-mentioned technical scheme, the internal diameter of guide block and the external diameter looks adaptation of valve rod, in the slip in-process, guaranteed the levelness of valve rod.

Optionally, the inner diameters of the first guide hole and the second guide hole are larger than the outer diameter of the valve rod.

Through adopting above-mentioned technical scheme, the internal diameter of first guiding hole and second guiding hole is greater than the internal diameter of valve rod, and when the valve rod appears the phenomenon of slope, the valve rod also can not sound production card to the phenomenon of being in-process of sliding.

In summary, the present application includes at least one of the following beneficial technical effects:

when the mute check valve is arranged in the horizontal pipeline, the guide component can ensure the levelness of the on-off component when the on-off component moves in the valve body, so that the phenomenon that the on-off component is opened or closed unsmoothly due to the fact that the on-off component and the valve body cannot be completely sealed due to the fact that the on-off component is inclined in sounding under the action of gravity is prevented;

the guide assembly is provided with two, can form two and support the compensating beam structure.

Drawings

Fig. 1 is a schematic diagram of the overall structure of the present utility model.

Fig. 2 is a cross-sectional view of the overall structure of the present utility model.

Fig. 3 is a partial schematic view showing the flow direction of the fluid medium according to the present utility model.

Reference numerals illustrate: 10. a valve body; 101. a fluid space; 102. a feed port; 103. a flow outlet; 20. an on-off assembly; 21. a valve stem; 22. a valve flap; 23. a valve seat; 24. a return spring; 30. a guide assembly; 31. a first guide hole; 32. a second guide hole; 33. and a guide block.

Description of the embodiments

The preferred embodiments in the following description are by way of example only and other obvious variations will occur to those skilled in the art. The principles of the present utility model defined in the following description may be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions without departing from the spirit and scope of the present utility model.

It will be appreciated by those skilled in the art that in the present disclosure, the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," etc. refer to an orientation or positional relationship based on that shown in the drawings, which is merely for convenience of description and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore the above terms should not be construed as limiting the present utility model.

It will be understood that the terms "a" and "an" should be interpreted as referring to "at least one" or "one or more," i.e., in one embodiment, the number of elements may be one, while in another embodiment, the number of elements may be plural, and the term "a" should not be interpreted as limiting the number.

The present application is described in further detail below in conjunction with fig. 1-3.

The embodiment of the application discloses a heavy-calibre silence check valve. Referring to fig. 1 to 3, the large-caliber mute check valve includes a valve body 10, an on-off assembly 20 and a guide assembly 30, wherein the valve body 10 has a fluid space 101, and the valve body 10 has an inlet 102 and an outlet 103, and the inlet 102 and the outlet 103 are in communication with the fluid space 101. The on-off assembly 20 is installed in the fluid space 101 of the valve body 10 to on-off the movement of the fluid medium in the valve body 10 through the guide assembly 30. The guide assembly 30 is mounted on the on-off assembly 20 to ensure that the on-off assembly 20 moves along the axis and the seal is reliable.

Specifically, the on-off assembly 20 includes at least one valve rod 21, at least one valve clack 22 and at least one valve seat 23, wherein the valve seat 23 is installed in the fluid space 101 of the valve body 10, the valve clack 22 is movably installed in the fluid space 101 of the valve body 10, the valve seat 23 and the valve clack 22 are positioned in the same horizontal plane, the valve rod 21 is penetrated between the valve seat 23 and the valve clack 22, and a return spring 24 is sleeved on the valve rod 21, and the return spring 24 can push the valve clack 22 to a specified position.

When no fluid medium enters the valve body 10, the valve clack 22 seals the inlet 102 of the valve body 10. When the fluid medium enters from the inlet 102, the flow rate of the fluid medium is continuously increased, the pushing force of the fluid medium is continuously increased, the fluid medium pushes the valve clack 22, so that the return spring 24 is pressed, at this time, the inlet 102 of the valve body 10 is opened, and the fluid medium enters into the fluid space 101 through the inlet 102 and is then discharged from the outlet 103.

When the flow rate of the fluid medium is smaller and smaller, the pushing force of the fluid medium is reduced, and under the action of the return spring 24, the valve clack 22 is pushed back to the initial position, at this time, the inlet 102 of the valve body 10 is closed, and the fluid medium cannot pass through the fluid space 101 of the valve body 10.

It should be noted that, when the pushing force of the fluid medium is smaller than the elastic force of the return spring 24, the return spring 24 will quickly return, so that the impact sound caused by the water hammer can be prevented, and the effect of silence can be achieved.

The guide assembly 30 includes a guide portion including a first guide hole 31, and the axis of the first guide hole 31 is the same as the axis of the valve stem 21. The first guide hole 31 is formed in the valve flap 22 and penetrates the valve flap 22. That is, the valve stem 21 passes through the valve flap 22, and the valve stem 21 is slidable along the valve flap 22.

It should be noted that the length of the valve rod 21 extending out of the valve clack 22 is greater than the telescopic length of the return spring 24. It is possible to prevent the valve stem 21 from being detached from the valve flap 22 when the valve stem 21 moves on the valve flap 22, or to generate a gap between the valve stem 21 and the valve flap 22, so that the fluid medium flows into the fluid space 101 from the gap between the valve stem 21 and the valve flap 22.

In another embodiment, the guiding part further comprises a second guiding hole 32, wherein the second guiding hole 32 is formed on the valve seat 23, and the axis of the second guiding hole 32 is the same as the axis of the valve rod 21. When the fluid medium pushes the valve flap 22 to move, the valve rod 21 can move in the second guide hole 32 when following the movement. It should be noted that the valve rod 21 is of an integral structure.

By the arrangement, the valve rod 21 can slide in the first guide hole 31 and the second guide hole 32, when the valve body 10 is arranged in a horizontal pipeline, the valve rod 21 cannot deviate under the action of gravity, and the phenomenon that the valve clack 22 cannot be completely sealed with the valve seat 23 and the valve clack 22 is opened or closed is not smooth is prevented. That is, the valve rod 21 and the valve clack 22 form a double-support balance beam structure.

Specifically, the guide assembly 30 further includes at least one guide block 33, and the guide block 33 is sleeved on the valve rod 21. In the present embodiment, two guide blocks 33 are provided, and the two guide blocks 33 are respectively mounted on the valve stem 21, one guide block 33 being located on a side of the valve stem 21 extending from the valve flap 22, and the other guide block 33 being located in the valve seat 23. And, the guide block 33 communicates with the first guide hole 31 and the second guide hole 32. So arranged, the guide block 33 can play a guiding role when the valve rod 21 moves in the first guide hole 31 and the second guide hole 32, further preventing the valve rod 21 from tilting during sliding.

It should be noted that the diameters of the first guide hole 31 and the second guide hole 32 are larger than the diameter of the valve rod 21, and the inner diameter of the guide block 33 is matched with the outer diameter of the valve rod 21. By this arrangement, when the valve rod 21 slides in the first guide hole 31 and the second guide hole 32, a gap exists between the valve rod 21 and the first guide hole 31 and the second guide hole 32, so that the valve rod 21 does not get stuck during the sliding process.

The implementation principle of the large-caliber mute check valve provided by the embodiment of the application is as follows: when an operator needs to install the mute check valve in a horizontal pipeline, fluid medium in the pipeline enters through the inlet 102 of the valve body 10, when the flow rate of the fluid medium is larger, the pushing force of the fluid medium is increased, so that the valve clack 22 is pressed against the return spring 24, the return spring 24 is compressed, the valve rod 21 moves towards the second guide hole 32 along with the valve clack 22 under the action of the guide block 33, a gap is formed between the valve clack 22 and the valve body 10, the fluid medium enters from the inlet 102 of the valve body 10, enters into the fluid space 101 through the gap between the valve clack 22 and the valve body 10, and finally is discharged into the pipeline from the outlet 103 of the valve body 10, and the pipeline is in a circulating state.

When the flow rate of the fluid medium becomes smaller, the return spring 24 is extended, the valve rod 21 moves to the side far away from the second guide hole 32 under the action of the guide block 33, the valve clack 22 is pushed to the initial position, the gap between the valve clack 22 and the valve body 10 is closed, the inflow port 102 is blocked, and the pipeline is in a closed state. Since the return spring 24 can quickly close the valve flap 22, the impact sound caused by the water hammer can be prevented, and the effect of silence can be achieved.

Under the effect of the guide assembly 30, when the mute check valve is installed on a horizontal pipeline, under the effect of the first guide hole 31, the second guide hole 32 and the two guide blocks 33, the valve rod 21 and the valve clack 22 can be kept in a specified horizontal plane in the moving process, the phenomenon of inclination cannot occur, and the normal operation of the valve body 10 is ensured.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims

1. A large-caliber mute check valve is characterized in that: comprising

2. The large caliber mute check valve according to claim 1, wherein: the on-off assembly further comprises a reset spring, and the reset spring is sleeved on the valve rod.

3. The large caliber mute check valve according to claim 1, wherein: the guide part also comprises a second guide hole, and the second guide hole is arranged on the valve seat.

4. A large caliber mute check valve according to claim 3, wherein: the guide assembly further comprises two guide blocks, one guide block is arranged at one end of the valve rod extending out of the valve clack, and the other guide block is sleeved on the valve rod and located in the valve seat.

5. The heavy caliber mute check valve according to claim 4, wherein: the internal diameter of guide block with the external diameter looks adaptation of valve rod.

6. A large caliber mute check valve according to claim 3, wherein: the inner diameters of the first guide hole and the second guide hole are larger than the outer diameter of the valve rod.