CN215980995U

CN215980995U - Lifting check valve with buffer structure

Info

Publication number: CN215980995U
Application number: CN202122701788.7U
Authority: CN
Inventors: 刘朋; 洪祺斌; 张桂钰
Original assignee: Zgotu China Fluid Control Technology Co ltd
Current assignee: Zigtoo Water Industry Tianjin Co ltd
Priority date: 2021-11-06
Filing date: 2021-11-06
Publication date: 2022-03-08
Anticipated expiration: 2031-11-06

Abstract

The utility model discloses a lifting check valve with a buffer structure, which comprises a valve body, a valve core, a valve clack and a return spring, wherein a fixed cylinder is fixed at the top of the valve body, the valve core and the return spring are both arranged at the inner side of the fixed cylinder, a side groove is formed in the inner surface wall of one side of the valve body, which is close to the medium inlet, and a buffer part is arranged in the side groove. In the utility model, after a medium is introduced, the pressure drop valve clack of the medium is jacked up, the valve clack can extrude the fixed block, the valve is opened after the valve clack slides through the fixed block, the medium backflow valve clack is reset by the reset spring when the pump is stopped, the buffer part on the inner side of the valve body can be extruded in the process, the pressure caused by medium backflow and the collision and noise caused by valve clack resetting are reduced through the buffer part, the noise can be further reduced through the fixed cylinder arranged at the top of the valve body and the silencing hole formed at the axial end of the fixed cylinder, and the using effect of the lifting check valve is improved through the structure.

Description

Lifting check valve with buffer structure

Technical Field

The utility model relates to the technical field of check valves, in particular to a lifting check valve with a buffering structure.

Background

The check valve is a valve with a circular valve clack and acts by self weight and medium pressure to block the medium from flowing backwards.

The lifting check valve is a check valve, after a pump is stopped, a medium in a pipeline can generate a backflow phenomenon, the backflow phenomenon can generate water hammer impact, the pressure of the backflow phenomenon can cause damage to a valve, a pipeline or equipment when the pressure is serious in a large-opening pipeline or a high-pressure pipeline, when a valve body is closed, the medium is overlarge in impact pressure on a valve clack, the valve clack is closed to generate large noise, and the service life of the check valve is shortened.

SUMMERY OF THE UTILITY MODEL

The utility model aims to: in order to solve the problems, a lifting check valve with a buffer structure is provided.

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

the lifting check valve with the buffering structure comprises a valve body, a valve core, a valve clack and a return spring, wherein a fixed cylinder is fixed at the top of the valve body, the valve core and the return spring are arranged on the inner side of the fixed cylinder, a side groove is formed in the inner surface wall of one side, close to the medium inlet, of the valve body, and a buffering portion is arranged in the side groove.

Preferably, the buffer part includes:

the buffer spring is of a conical structure and is fixed on the inner surface wall of the side groove;

the telescopic sleeve is arranged on the inner side of the buffer spring and is fixed on the surface wall in the side groove;

the connecting column is fixedly connected with the buffer spring and the other side of the telescopic sleeve;

the fixed block, the fixed block is fixed at the spliced pole other end, just the fixed block cross-section is board ellipse shape, the valve clack butt under fixed block and the valve open mode.

Preferably, the transverse end of the fixed cylinder is provided with a plurality of groups of silencing holes.

Preferably, the buffer part further comprises a side cylinder, the side cylinder is fixed on the outer side of the side groove, and the inner wall of the side cylinder is in sliding connection with the connecting column.

Preferably, the fixed block and the connecting column are of an integral structure, and the surface of the fixed block is a smooth surface.

In summary, due to the adoption of the technical scheme, the utility model has the beneficial effects that:

in the utility model, after a medium is introduced, the pressure drop valve clack of the medium is jacked up, the valve clack can extrude the fixed block, the valve is opened after the valve clack slides through the fixed block, the medium backflow valve clack is reset by the reset spring when the pump is stopped, the buffer part on the inner side of the valve body can be extruded in the process, the pressure caused by medium backflow and the collision and noise caused by valve clack resetting are reduced through the buffer part, the noise can be further reduced through the fixed cylinder arranged at the top of the valve body and the silencing hole formed at the axial end of the fixed cylinder, and the using effect of the lifting check valve is improved through the structure.

Drawings

FIG. 1 illustrates a schematic diagram of a structure provided in accordance with an embodiment of the present invention;

FIG. 2 is a schematic diagram illustrating a closed valve flap according to an embodiment of the present disclosure;

fig. 3 is a schematic diagram illustrating a structure of a valve flap provided according to an embodiment of the present invention when the valve flap is opened.

Illustration of the drawings:

1. a valve body; 2. a fixed cylinder; 3. a valve flap; 4. a buffer section; 41. a buffer spring; 42. a telescopic sleeve; 43. a side drum; 44. connecting columns; 45. a fixed block; 5. a return spring; 6. a valve core; 7. a silencing hole; 8. and a side groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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 fig. 1-3, the present invention provides a technical solution:

the utility model provides a lift check valve with buffer structure, includes valve body 1, case 6, valve clack 3 and

reset spring

5, and 1 top of valve body is fixed with solid fixed cylinder 2, and case 6 all sets up in solid fixed cylinder 2 inboardly with reset spring 5, and valve body 1 is close to one side interior table wall that the medium got into and has been seted up side groove 8, is provided with buffering portion 4 in the side groove 8.

Specifically, as shown in fig. 3, the buffer 4 includes:

the buffer spring 41 is in a conical structure, and is fixed on the inner surface wall of the side groove 8;

an expansion sleeve 42, wherein the expansion sleeve 42 is arranged inside the buffer spring 41 and fixed on the inner surface wall of the side groove 8;

the connecting column 44 is fixedly connected with the buffer spring 41 and the other side of the telescopic sleeve 42;

and the fixed block 45 is fixed at the other end of the connecting column 44, the section of the fixed block 45 is in a plate ellipse shape, and the fixed block 45 is abutted against the valve clack 3 in the valve opening state.

Specifically, as shown in fig. 3, the fixing cylinder 2 is provided with a plurality of silencing holes 7 at the transverse end.

Specifically, as shown in fig. 3, the buffer part 4 further includes a side tube 43, the side tube 43 is fixed outside the side groove 8, and the inner wall of the side tube 43 is slidably connected to the connecting column 44.

Specifically, as shown in fig. 3, the fixing block 45 and the connecting column 44 are of an integral structure, and the surface is a smooth surface.

To sum up, after letting in the medium, the pressure drop valve clack 3 jack-up of medium, valve clack 3 can extrude fixed block 45, the valve is opened after sliding fixed block 45, when stopping the pump, the medium backward flow, valve clack 3 is reset by reset spring 5, its in-process can extrude 1 inboard buffer 4 of valve body, reduce the pressure that the medium backward flow brought through buffer 4, and clash and the noise that brings when valve clack 3 resets, and can further reduce the noise through the fixed cylinder 2 that valve body 1 top set up and bloop 7 that its axial end was seted up, the result of use of lift check valve has been improved through this structure.

The previous description of the embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The utility model provides a lift check valve with buffer structure, includes valve body (1), case (6), valve clack (3) and reset spring (5), its characterized in that, valve body (1) top is fixed with solid fixed cylinder (2), case (6) all set up at solid fixed cylinder (2) inboardly with reset spring (5), valve body (1) is close to one side inside gauge outfit wall that the medium got into and has been seted up side groove (8), be provided with buffering portion (4) in side groove (8).

2. The lifting check valve with a buffering structure as claimed in claim 1, wherein the buffering portion (4) comprises:

the buffer spring (41) is of a conical structure and is fixed on the inner surface wall of the side groove (8);

the telescopic sleeve (42) is arranged on the inner side of the buffer spring (41) and fixed on the inner surface wall of the side groove (8);

the connecting column (44), the connecting column (44) and the buffer spring (41) are fixedly connected with the other side of the telescopic sleeve (42);

fixed block (45), fixed block (45) are fixed at spliced pole (44) other end, just fixed block (45) cross-section is board ellipse, valve clack (3) butt under fixed block (45) and the valve open mode.

3. The lifting check valve with the buffer structure as claimed in claim 1, wherein the fixed cylinder (2) is provided with a plurality of groups of muffling holes (7) at the lateral end.

4. The lifting check valve with a buffer structure as claimed in claim 2, characterized in that the buffer part (4) further comprises a side barrel (43), the side barrel (43) is fixed outside the side groove (8) and the inner wall of the side barrel (43) is slidably connected with the connecting column (44).

5. The lifting check valve with a buffering structure as claimed in claim 2, wherein the fixing block (45) and the connecting column (44) are of an integral structure and have smooth surfaces.