CN213451890U

CN213451890U - Check valve with elastic sealing structure

Info

Publication number: CN213451890U
Application number: CN202022274912.1U
Authority: CN
Inventors: 孙婷婷
Original assignee: Suzhou Suvalvar Pipeline Technology Co ltd
Current assignee: Suzhou Suvalvar Pipeline Technology Co ltd
Priority date: 2020-10-14
Filing date: 2020-10-14
Publication date: 2021-06-15
Anticipated expiration: 2030-10-14

Abstract

The utility model provides a check valve with elastic sealing structure, which relates to the field of check valves and comprises a valve body, wherein a debugging device is fixedly connected at the top of the valve body, a valve core is fixedly arranged in the valve body, one end of the valve body is fixedly connected with a water inlet flange plate, the other end of the valve body is fixedly connected with a water outlet connecting pipe, and one end of the water outlet connecting pipe, which is far away from the valve body, is fixedly connected with a water outlet flange plate; when the check valve works, flowing media is introduced through the water inlet flange plate, the valve clack moves under the pressure action of the flowing media to compress the limiting spring, the high-elasticity rubber column is compressed through the sliding sleeve column, the valve clack is far away from the sealing connector, the flowing media enters the water outlet connecting pipe through the anti-backflow connecting edge and the edge space, and when the backflow pressure in the water outlet connecting pipe is the same as the pressure of the flowing media, the valve clack maintains an open state and continuously passes through the media.

Description

Check valve with elastic sealing structure

Technical Field

The utility model relates to a check valve technical field specifically is a check valve with elastic seal 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. It belongs to the automatic valve category, also called check valve, reflux valve or isolation valve. The valve clack motion mode is divided into lifting type and swing type.

Most of valve clacks of the existing check valve are rigid pieces, and have the defects of large resistance and poor sealing performance during closing. Because of this disadvantage, the media guidance of the known non-return valves occurs somewhat during use. In order to reduce the influence caused by medium backflow as much as possible, the sealing valve flap can be set to be an elastic structure, the pressure sensing change of the valve flap is enhanced, and the sealing performance of the check valve is improved.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

To prior art not enough, the utility model discloses a check valve with elastic seal structure to solve the problem that proposes among the above-mentioned background art.

(II) technical scheme

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: the utility model provides a check valve with elastic sealing structure, includes the valve body, valve body top fixed connection debugging device, the inside fixed mounting of valve body has the case, the ring flange of intaking of valve body one end fixedly connected with, valve body other end fixedly connected with goes out the water connecting pipe, the one end fixedly connected with that the valve body was kept away from to the water connecting pipe goes out the water ring flange, connect the hole has been seted up to play water ring flange front end, connect the hole and run through out water connecting pipe, valve body and the ring flange of intaking.

Preferably, the lower part of the debugging device is set as a debugging connector, the top of the debugging connector is connected with a sealing connection top through a bolt fixedly, the middle of the top of the sealing connection top is fixedly connected with a connection through nozzle, the outer wall of the connection through nozzle is in threaded connection with a sealing connection cover, and a sealing washer is fixedly arranged at the joint of the connection through nozzle and the sealing connection cover.

Preferably, the valve core main body injection device is a connecting guide pillar, two ends of the connecting guide pillar are slidably connected with a sliding connection ring, the upper end and the lower end of the sliding connection ring at the front end of the connecting guide pillar are fixedly connected with a first bracket, two ends of the first bracket are fixedly connected with the front end of the bottom of the connecting through nozzle, the upper end and the lower end of the sliding connection ring at the rear end of the connecting guide pillar are fixedly connected with a second bracket, two ends of the second bracket are fixedly connected with the rear end of the bottom of the connecting through nozzle, the rear end of the sliding connection ring at the rear end of the connecting guide pillar is fixedly connected with a limiting spring, the rear end of the limiting spring is fixedly connected with a first baffle plate, the front end of the outer wall of the first baffle plate is fixedly connected with a connecting sleeve, the front end of the connecting guide pillar is fixedly connected with a valve flap, the third support front end both sides have been seted up the guiding gutter, fixedly connected with high elasticity rubber post in the sliding sleeve, valve clack outer wall fixed connection is connected with prevents the connection limit against current, valve clack rear end sliding connection has sealed connector.

Preferably, one end of the high-elasticity rubber column, which is far away from the sliding sleeve, is fixedly connected with a sliding sleeve column, and a groove is formed in the sliding sleeve column.

Preferably, the third support is fixedly arranged in the water outlet connecting pipe, and the sealing connecting body is fixedly arranged on the inner wall of the joint of the water outlet connecting pipe and the valve body.

Preferably, the connecting sleeve is connected to the outer walls of the two sliding connecting rings in a sliding mode, and sliding grooves are formed in the upper end and the lower end of the connecting sleeve.

Preferably, a plurality of through flow grooves are uniformly formed in the front end of the anti-reflux connecting edge, and the anti-reflux connecting edge is a circular ring-shaped screen plate.

The utility model discloses a check valve with elastic seal structure, its beneficial effect who possesses as follows:

when the check valve works, flowing media is introduced through the water inlet flange plate, the valve clack moves under the pressure action of the flowing media to compress the limiting spring, meanwhile, the high-elasticity rubber column is compressed through the sliding sleeve column, the valve clack is far away from the sealing connecting body, the flowing media enters the water outlet connecting pipe through the anti-backflow connecting edge and the edge space, and when the backflow pressure in the water outlet connecting pipe is the same as the pressure of the flowing media, the valve clack maintains an open state and continuously passes through the media; when the sum of the backflow pressure in the water outlet connecting pipe and the elasticity of the high-elasticity rubber column and the limiting spring is larger than the pressure of the flowing medium, the clearance between the valve clack and the sealing connecting body is continuously reduced along with the continuous increase of the backflow pressure until the backflow pressure is the same as the through-flow pressure until the valve clack and the sealing connecting body are sealed, and the medium through-flow is stopped; the opening and closing of the valve clack are controlled by matching the high-elasticity rubber column and the limiting spring with the backflow pressure, so that medium backflow can be effectively prevented.

Drawings

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

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

FIG. 3 is an enlarged schematic view of the structure at A in FIG. 2 according to the present invention;

fig. 4 is an enlarged schematic structural diagram of the point B in fig. 2 according to the present invention.

In the figure: 1. a water outlet flange plate; 2. a connecting through hole; 3. a water outlet connecting pipe; 4. a debugging device; 5. a valve body; 6. a water inlet flange plate; 7. a valve core; 401. a sealing connection cover; 402. the top is connected in a sealing way; 403. debugging a connecting body; 404. a sealing gasket; 405. connecting the through nozzle; 701. a first bracket; 702. a second bracket; 703. a sliding connection ring; 704. a limiting spring; 705. connecting the guide post; 706. a first baffle plate; 707. a connecting sleeve; 708. a valve flap; 709. an anti-reflux connecting edge; 710. sealing the connector; 711. sliding the sleeve column; 712. a sliding sleeve; 713. a diversion trench; 714. a third support; 715. a high-elasticity rubber column.

Detailed Description

The embodiment of the utility model discloses check valve with elastic sealing structure, as shown in fig. 1-4, including valve body 5, 5 top fixed connection debugging device 4 of valve body, the inside fixed mounting of valve body 5 has case 7, 5 one end fixedly connected with of valve body intake ring flange 6, 5 other end fixedly connected with of valve body go out water connecting pipe 3, the one end fixedly connected with of valve body 5 goes out water ring flange 1 that goes out water connecting pipe 3 and keep away from, connect the through-hole 2 has been seted up to play water ring flange 1 front end, connect the through-hole 2 and run through out water connecting pipe 3, valve body 5 and intake ring flange 6.

The lower part of the debugging device 4 is set to be a debugging connector 403, the top of the debugging connector 403 is fixedly connected with a sealing connection top 402 through a bolt, the middle of the top of the sealing connection top 402 is fixedly connected with a connection through nozzle 405, the outer wall of the connection through nozzle 405 is in threaded connection with a sealing connection cover 401, and a sealing washer 404 is fixedly arranged at the joint of the connection through nozzle 405 and the sealing connection cover 401.

The main injection device of the valve core 7 is a connecting guide pillar 705, two ends of the connecting guide pillar 705 are slidably connected with a sliding connection ring 703, the upper end and the lower end of the sliding connection ring 703 at the front end of the connecting guide pillar 705 are fixedly connected with a first bracket 701, two ends of the first bracket 701 are fixedly connected with the front end of the bottom of the connecting through nozzle 405, the upper end and the lower end of the sliding connection ring 703 at the rear end of the connecting guide pillar 705 are fixedly connected with a second bracket 702, two ends of the second bracket 702 are fixedly connected with the rear end of the bottom of the connecting through nozzle 405, the rear end of the sliding connection ring 703 at the rear end of the connecting guide pillar 705 is fixedly connected with a limiting spring 704, the rear end of the limiting spring 704 is fixedly connected with a first baffle 706, the front end of the outer wall of the first baffle 706 is fixedly connected with a connection sleeve 707, the front end of the connecting guide pillar 705, the two sides of the front end of the third bracket 714 are provided with flow guide grooves 713, a high-elasticity rubber column 715 is fixedly connected in the sliding sleeve 712, the outer wall of the valve clack 708 is fixedly connected with an anti-reflux connecting edge 709, and the rear end of the valve clack 708 is slidably connected with a sealing connecting body 710.

One end of the high-elasticity rubber column 715 far away from the sliding sleeve 712 is fixedly connected with a sliding sleeve column 711, and a groove is formed in the sliding sleeve column 711. The third bracket 714 is fixedly installed in the water outlet connection pipe 3, and the sealing connection body 710 is fixedly installed on the inner wall of the connection position of the water outlet connection pipe 3 and the valve body 5. The connecting sleeve 707 is slidably connected to the outer walls of the two sliding connecting rings 703, and sliding grooves are formed at the upper end and the lower end of the connecting sleeve 707. The front end of the anti-reflux connecting edge 709 is uniformly provided with a plurality of through flow grooves, and the anti-reflux connecting edge 709 is arranged to be a circular net plate.

The working principle is as follows:

when the device works, the valve body 5 is connected into a through-flow pipeline through the water inlet flange 6 and the water outlet flange 1, and then the valve core 7 is debugged through the debugging device 4, so that the normal operation of the valve core 7 is ensured;

during debugging, firstly, the sealing connection cover 401 is unscrewed, and the connection guide pillar 705 and the limiting spring 704 of the valve core 7 are debugged through the connection through nozzle 405;

after debugging is finished, flowing media is introduced into the water inlet flange 6, the valve clack 708 moves under the pressure action of the flowing media to compress the limiting spring 704, the high-elasticity rubber column 715 is compressed by the sliding sleeve column 711, the valve clack 708 is far away from the sealing connecting body 710, the flowing media enters the water outlet connecting pipe 3 through the anti-backflow connecting edge 709 and the edge space, and when the backflow pressure in the water outlet connecting pipe 3 is the same as the pressure of the flowing media by adding the elasticity sum of the elastic rubber column 715 and the limiting spring 704, the valve clack 708 maintains an open state and continuously passes through the media; when the backflow pressure in the water outlet connecting pipe 3 is higher than the pressure of the flowing medium by the sum of the elastic forces of the high-elasticity rubber column 715 and the limiting spring 704, the clearance between the valve clack 708 and the sealing connecting body 710 is continuously reduced along with the continuous increase of the backflow pressure until the backflow pressure is the same as the through-flow pressure until the valve clack 708 and the sealing connecting body 710 are sealed, and the through-flow of the medium is stopped.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A check valve with elastic sealing structure comprises a valve body (5), and is characterized in that: valve body (5) top fixed connection debugging device (4), the inside fixed mounting of valve body (5) has case (7), valve body (5) one end fixedly connected with water inlet flange dish (6), valve body (5) other end fixedly connected with goes out water connecting pipe (3), the one end fixedly connected with that valve body (5) were kept away from in play water connecting pipe (3) goes out water flange dish (1), connect the via hole (2) have been seted up to play water flange dish (1) front end, connect the via hole (2) and run through water connecting pipe (3), valve body (5) and water inlet flange dish (6).

2. A check valve having an elastic sealing structure according to claim 1, wherein: debugging device (4) lower part sets up to debugging connector (403), debugging connector (403) top is through bolt fixedly connected with sealing connection top (402), fixedly connected with connects logical mouth (405) in the middle of sealing connection top (402) top, connect logical mouth (405) outer wall threaded connection have sealing connection lid (401), connect logical mouth (405) and the junction fixed mounting of sealing connection lid (401) have seal ring (404).

3. A check valve having an elastic sealing structure according to claim 1, wherein: the main body shooting device of the valve core (7) is a connecting guide pillar (705), two ends of the connecting guide pillar (705) are connected with a sliding connecting ring (703) in a sliding mode, the upper end and the lower end of the sliding connecting ring (703) at the front end of the connecting guide pillar (705) are fixedly connected with a first support (701), two ends of the first support (701) are fixedly connected with the front end of the bottom of the connecting through nozzle (405), the upper end and the lower end of the sliding connecting ring (703) at the rear end of the connecting guide pillar (705) are fixedly connected with a second support (702), two ends of the second support (702) are fixedly connected with the rear end of the bottom of the connecting through nozzle (405), the rear end of the sliding connecting ring (703) at the rear end of the connecting guide pillar (705) is fixedly connected with a limiting spring (704), the rear end of the limiting spring (704) is fixedly connected with a, the improved valve is characterized in that a valve clack (708) is fixedly connected to the front end of the connecting guide pillar (705), a sliding sleeve pillar (711) is fixedly connected to the middle of the front end of the valve clack (708), a sliding sleeve (712) is slidably connected to the front end of the sliding sleeve pillar (711), a third support (714) is fixedly connected to the front end of the sliding sleeve (712), guide grooves (713) are formed in two sides of the front end of the third support (714), a high-elasticity rubber pillar (715) is fixedly connected to the inside of the sliding sleeve (712), a countercurrent-preventing connecting edge (709) is fixedly connected to the outer wall of the valve clack (708), and a sealing connecting body (710) is slidably.

4. A check valve having an elastic sealing structure according to claim 3, wherein: one end, far away from the sliding sleeve (712), of the high-elasticity rubber column (715) is fixedly connected with a sliding sleeve column (711), and a groove is formed in the sliding sleeve column (711).

5. A check valve having an elastic sealing structure according to claim 3, wherein: the third support (714) is fixedly installed in the water outlet connecting pipe (3), and the sealing connecting body (710) is fixedly installed on the inner wall of the joint of the water outlet connecting pipe (3) and the valve body (5).

6. A check valve having an elastic sealing structure according to claim 3, wherein: the connecting sleeve (707) is connected to the outer walls of the two sliding connecting rings (703) in a sliding mode, and sliding grooves are formed in the upper end and the lower end of the connecting sleeve (707).

7. A check valve having an elastic sealing structure according to claim 3, wherein: a plurality of through-flow grooves are evenly formed in the front end of the anti-countercurrent connecting edge (709), and the anti-countercurrent connecting edge (709) is arranged to be a circular ring-shaped net plate.