CN216382701U

CN216382701U - Swing check valve

Info

Publication number: CN216382701U
Application number: CN202122627816.5U
Authority: CN
Inventors: 夏福民; 蔡飞; 夏之琨; 张彦辉; 曹铖淏; 池汇泉
Original assignee: Beijing Valve General Factory Co ltd
Current assignee: Beijing Valve General Factory Co ltd
Priority date: 2021-10-29
Filing date: 2021-10-29
Publication date: 2022-04-26
Anticipated expiration: 2031-10-29

Abstract

The utility model discloses a swing check valve, which comprises a valve body and a sealing washer, wherein a valve seat is fixedly arranged on one side inside the valve body, the sealing washer is fixedly adhered to the top of the valve body, the top of the sealing washer is abutted with a valve sealing assembly which is detachably arranged on the top of the valve body, a pin shaft is arranged at the bottom end of the valve sealing assembly, a flow direction limiting assembly for realizing non-return is movably arranged on the outer edge surface of the pin shaft, the flow direction limiting assembly comprises a rocker which is rotatably arranged on the pin shaft and a valve clack which is movably arranged on one side of the rocker and abutted against the valve seat, an opening pin penetrating through the rocker is formed in the center of one side of the valve clack, which is far away from the valve seat, and a locking nut is connected to one end of the opening pin penetrating through the rocker in a threaded manner, the valve sealing assembly comprises a valve cover, and two supporting arms are symmetrically formed at the bottom end of the valve cover. This swing check valve, valve clack is convenient for take out in it, so the staff of being convenient for maintains it, and the practicality is strong.

Description

Swing check valve

Technical Field

The utility model belongs to the technical field of pipeline valves, and particularly relates to a swing check valve.

Background

The non-return valve is a valve commonly used in pipe systems, mainly installed at the outlet of the pump, which is used to communicate and non-return the fluid medium in the pipe system.

The existing swing check valve mainly comprises a valve body, a valve seat and a check valve clack, wherein the valve seat is provided with a valve seat sealing surface and fixed in a valve body flow channel, the check valve clack is provided with a valve clack sealing surface and is arranged in a valve body inner cavity by utilizing a pin shaft, when a medium enters the valve body inner cavity from a valve inlet side, the medium pushes the check valve clack to rotate around the pin shaft to open, and when no medium enters from the valve inlet side, the check valve clack rotates around the pin shaft to close.

The swing check valve in the prior art has the advantages that the check valve clack for preventing medium from flowing back is mostly fixed in the valve body through the pin shaft, so that the valve clack of the valve is difficult to take out and maintain when damaged due to water hammer, and inconvenience is brought to maintenance personnel.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to a swing check valve, which solves the above problems.

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

a swing check valve comprises a valve body and a sealing washer, wherein a valve seat is fixedly arranged on one side inside the valve body;

the top of the sealing washer is abutted with a valve sealing assembly which is detachably arranged on the top of the valve body, a pin shaft is arranged at the bottom end of the valve sealing assembly, and a flow direction limiting assembly for realizing non-return is movably arranged on the outer edge surface of the pin shaft;

the flow direction limiting assembly comprises a rocker and a valve clack, the rocker is rotatably mounted on the pin shaft, the valve clack is movably arranged on one side of the rocker and is abutted to the valve seat, a cotter pin penetrating through the rocker is formed in the center of one side, away from the valve seat, of the valve clack, and one end, penetrating through the rocker, of the cotter pin is in threaded connection with a locking nut.

Further, the valve sealing assembly comprises a valve cover, two supporting arms for supporting the flow direction limiting assembly are symmetrically constructed at the bottom end of the valve cover towards one side of the supporting arms, and a pin shaft is fixedly installed between the bottom ends of the two supporting arms.

Furthermore, the top of valve gap is seted up the round hole that supplies eyebolt threaded connection between two parties, and is the annular array on the outer fringe face of valve gap and constructs ear seat one, the ear seat is provided with a plurality ofly altogether.

Further, the top of valve body is that the annular array constructs has ear seat two, and ear seat two is provided with a plurality ofly altogether, the concerted movement is provided with the double-screw bolt in ear seat one and ear seat two, and the equal threaded connection in both ends of double-screw bolt has fastening nut.

Furthermore, one side of the valve body facing the valve seat is fixedly provided with a first flange, and one end of the valve body far away from the valve seat is fixedly provided with a second flange.

Furthermore, one side of the locking nut, which faces the valve clack, is abutted with a gasket, and the gasket is movably sleeved on the cotter pin.

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

benefit from the setting of valve seal subassembly and flow direction restriction subassembly in the valve body, through taking off valve seal subassembly, can take out the flow direction restriction subassembly that is connected in valve seal subassembly through the round pin axle to through unscrewing lock nut, can take off the valve clack that is constructed with the split pin, so that maintain when the valve clack is impaired, and then be convenient for the staff maintains the valve clack, the practicality is stronger.

Drawings

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

FIG. 2 is a schematic view of the assembly of the valve seal assembly and flow direction restriction assembly of the present invention;

FIG. 3 is a schematic structural view of the valve seal assembly of the present invention;

FIG. 4 is a schematic view of the flow direction restriction assembly of the present invention.

In the figure: 1. a valve body; 2. a valve seat; 3. a valve seal assembly; 301. a valve cover; 302. a support arm; 303. a lifting eye screw; 304. a first ear seat; 4. a flow direction restriction component; 401. a rocker; 402. a valve flap; 403. a cotter pin; 404. a gasket; 405. locking the nut; 5. a pin shaft; 6. a second ear seat; 7. a stud; 8. a first flange plate; 9. and a second flange plate.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the utility model easy to understand, the utility model is further described with the specific embodiments.

As shown in fig. 1-4, a swing check valve comprises a valve body 1 with a valve seat 2 fixedly mounted on one side inside and a sealing washer fixedly bonded on the top of the valve body 1, wherein the top of the sealing washer is abutted with a valve seal assembly 3 detachably mounted on the top of the valve body 1, a pin shaft 5 is mounted at the bottom end of the valve seal assembly 3, a flow direction limiting assembly 4 for realizing non-return is movably mounted on the outer edge surface of the pin shaft 5, and the pin shaft 5 can be taken out from the valve body 1 together with the flow direction limiting assembly 4 mounted on the pin shaft 5 by taking out the valve seal assembly 3, so that the use is convenient;

the flow direction limiting assembly 4 comprises a rocker 401 rotatably mounted on a pin shaft 5 and a valve flap 402 movably arranged on one side of the rocker 401 and abutted to the valve seat 2, a split pin 403 penetrating through the rocker 401 is constructed in the center of one side, away from the valve seat 2, of the valve flap 402, a lock nut 405 is connected to one end, penetrating through the rocker 401, of the split pin 403, a gasket 404 is abutted to one side, facing towards the valve flap 402, of the lock nut 405, the gasket 404 is movably sleeved on the split pin 403, the valve flap 402 constructed with the split pin 403 can be taken down from the rocker 401 by unscrewing the lock nut 405, so that a worker can maintain the valve flap 402, and the valve flap 402 can be taken out, so that the space in the valve body 1 is enlarged, and the worker can maintain the sealing surface of the valve seat 2.

Wherein, valve seal subassembly 3 includes valve gap 301, valve gap 301's bottom has two support arms 302 that are used for providing the support for flow direction restriction subassembly 4 towards one side symmetrical structure of support arm 302, and between the bottom of two support arms 302 of 5 fixed mounting of round pin axles, the round hole that supplies eyebolt 303 threaded connection is offered between two parties in the top of valve gap 301, and it has ear seat one 304 to be the annular array structure on valve gap 301's the outer fringe face, ear seat one 304 is provided with a plurality ofly altogether, the top of valve body 1 is the annular array structure and has ear seat two 6, and ear seat two 6 are provided with a plurality ofly altogether, the common activity is provided with double-screw bolt 7 in ear seat one 304 and the ear seat two 6, and the equal threaded connection in both ends of double-screw bolt 7 has fastening nut, fastening nut through screwing down a plurality of screw thread installations on double-screw bolt 7 can take off valve gap 301 that has a plurality of ear seats 304 by valve body 1, and is easy operation.

Wherein, one side fixed mounting that valve body 1 faced disk seat 2 has ring flange one 8, and the one end fixed mounting that valve body 1 kept away from disk seat 2 has ring flange two 9, and through ring flange one 8 and ring flange two 9 cooperation bolt that prepares in advance, can be fixed in pipe-line system with this valve.

The working principle is as follows: this swing check valve, during the use, can take off valve gap 301 by valve body 1 through unscrewing a plurality of fastening nuts on four double-screw bolts 7, and through taking off valve gap 301, can take out in flowing to restriction subassembly 4 by valve body 1 through connecting in the round pin axle 5 of two support arms 302, take out the back, through unscrewing lock nut 405, can pull down the valve clack 402 who constructs in split pin 403 on rocker 401, the staff of being convenient for maintains it, convenient to use.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. A swing check valve comprises a valve body (1) with a valve seat (2) fixedly arranged on one side inside and a sealing gasket fixedly bonded on the top of the valve body (1);

the method is characterized in that: the top of the sealing washer is abutted with a valve sealing assembly (3) which is detachably mounted on the top of the valve body (1), a pin shaft (5) is mounted at the bottom end of the valve sealing assembly (3), and a flow direction limiting assembly (4) for realizing non-return is movably mounted on the outer edge surface of the pin shaft (5);

the flow direction limiting assembly (4) comprises a rocker (401) rotatably mounted on the pin shaft (5) and a valve clack (402) movably arranged on one side of the rocker (401) and abutted to the valve seat (2), a cotter pin (403) penetrating through the rocker (401) is formed in the center of one side, far away from the valve seat (2), of the valve clack (402), and a locking nut (405) is connected to one end, penetrating through the rocker (401), of the cotter pin (403) in a threaded mode.

2. A swing check valve as claimed in claim 1, wherein: the valve sealing assembly (3) comprises a valve cover (301), two supporting arms (302) used for providing support for the flow direction limiting assembly (4) are symmetrically constructed at the bottom end of the valve cover (301) towards one side of the supporting arms (302), and a pin shaft (5) is fixedly installed between the bottom ends of the supporting arms (302).

3. A swing check valve as claimed in claim 2, wherein: the top of valve gap (301) is offered the round hole that supplies eyebolt (303) threaded connection in the centre, and is the annular array on the outer fringe face of valve gap (301) and constructs ear seat one (304), ear seat one (304) are provided with a plurality ofly altogether.

4. A swing check valve as claimed in claim 3, wherein: the top of valve body (1) is that the annular array constructs has ear seat two (6), and ear seat two (6) are provided with a plurality ofly altogether, the joint activity is provided with double-screw bolt (7) in ear seat one (304) and ear seat two (6), and the equal threaded connection in both ends of double-screw bolt (7) has fastening nut.

5. A swing check valve as claimed in claim 1, wherein: one side fixed mounting that valve body (1) was faced disk seat (2) has ring flange one (8), and the one end fixed mounting that valve body (1) kept away from disk seat (2) has ring flange two (9).

6. A swing check valve as claimed in claim 1, wherein: one side of the locking nut (405) facing the valve clack (402) is abutted with a gasket (404), and the gasket (404) is movably sleeved on the cotter pin (403).