CN210950040U

CN210950040U - Check valve

Info

Publication number: CN210950040U
Application number: CN201921399724.2U
Authority: CN
Inventors: 方福永
Original assignee: Zhejiang Lierduo Valve Co ltd
Current assignee: Zhejiang Lierduo Valve Co ltd
Priority date: 2019-08-27
Filing date: 2019-08-27
Publication date: 2020-07-07
Anticipated expiration: 2029-08-27

Abstract

The utility model discloses a check valve, the valve clack is round platform form setting, and the one end that the cross section is little is sealed end, and the one end that the cross section is big is the buffering end, wherein forms sealed face between sealed end and the disk seat, be equipped with on the lateral wall of buffering end and supply to rotate the piece and insert the slot of establishing, be equipped with the dashpot of indent on its terminal surface, be equipped with the screw-thread fit hole between slot and the dashpot, rotate the piece through the bolt fastening in the slot, the positive slope form of the inner wall of dashpot sets up, and the cross section of dashpot is from inside to outside and scales up gradually, be equipped with the reference column in the dashpot, the cover is equipped with movable sleeve and spring on the reference column, the one end and the spring of movable sleeve are. After improvement, when the valve is closed, the impact of the medium on the valve clack can be relieved, and the service quality of the valve clack is prolonged.

Description

Check valve

Technical Field

The utility model relates to the technical field of valves, more specifically say, it relates to a check valve.

Background

The check valve is a valve in which the opening and closing piece is a valve flap and acts by the weight of the valve flap and the pressure of a medium to block the backflow of the medium. When the valve is closed, a sealing surface is required to be formed between the valve clack and the valve seat to block medium circulation, and the valve clack plays a role in preventing medium backflow after being closed. The suddenly closed valve flap can bear the impact force from medium backflow, and under the condition that the impact force is too strong, the valve flap is easy to damage.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a valve clack job stabilization is high, long service life's check valve.

In order to achieve the above purpose, the utility model provides a following technical scheme: a check valve comprises a valve body which is arranged in a disc shape, wherein the valve body is provided with a medium channel, one end of the medium channel is provided with a valve seat, the other end of the medium channel is provided with a valve clack, the valve clack and the valve seat form a sealing surface, a rotating part is connected onto the valve clack, a rotating shaft is arranged on the rotating part, a rotating groove for the rotating shaft to be in rotating fit is arranged on the valve body, the valve clack is arranged in a round table shape, one end with a small cross section is a sealing end, the other end with a large cross section is a buffering end, a sealing surface is formed between the sealing end and the valve seat, a slot for the rotating part to be inserted into is arranged on the side wall of the buffering end, a buffering groove which is concave is arranged on the end surface of the buffering end, a thread matching hole is arranged between the, the cover is equipped with movable sleeve and spring on the reference column, the one end and the spring of movable sleeve are contradicted, and the other end is connected with the buffer disk, the buffer disk has curved buffering face.

The utility model discloses further set up to: the rotating part comprises an inserting piece and a movable end connected with the rotating shaft, and the movable end is provided with an inwards concave arc-shaped groove.

The utility model discloses further set up to: the end of the upper sealing end of the valve clack is provided with an inclined plane.

The utility model discloses further set up to: the valve seat is provided with a sealing ring, and the valve clack is provided with a sealing ring matched with the sealing ring.

By adopting the technical scheme, when the valve is closed, the impact force of the medium on the valve clack can be relieved by the telescopic buffer disc, the impact force of partial medium can be relieved in time, and the valve clack is protected. Meanwhile, the valve clack is arranged to be in a round table shape, and the sealing performance of the valve clack and the valve seat can be improved under the action of impact force of a medium.

Drawings

FIG. 1 is a sectional view of the present invention;

FIG. 2 is an enlarged view of a portion a of FIG. 1;

fig. 3 is a partial cross-sectional view of the valve flap.

1. A valve body; 10. a media channel; 11. a rotating groove; 2. a valve seat; 20. a seal ring; 3. a valve flap; 30. sealing the end; 31. a buffer end; 310. a slot; 311. a buffer tank; 312. a threaded mating hole; 313. a positioning column; 314. a spring; 315. a movable sleeve; 316. a buffer tray; 317. a buffer surface; 32. a seal ring; 4. a rotating member; 40. inserting sheets; 41. a movable end; 42. an arc-shaped slot; 5. a rotating shaft.

Detailed Description

Embodiments of the present invention are further described with reference to fig. 1 to 3.

A check valve comprises a valve body 1 which is arranged in a disc shape, wherein the valve body 1 is provided with a medium channel 10, one end of the medium channel 10 is provided with a valve seat 2, the other end of the medium channel is provided with a valve clack 3, the valve clack 3 and the valve seat 2 form a sealing surface, the valve clack 3 is connected with a rotating part 4, the rotating part 4 is provided with a rotating shaft 5, the valve body 1 is provided with a rotating groove 11 for the rotating shaft 5 to be in rotating fit, the valve clack 3 is arranged in a round table shape, one end with a small cross section is a sealing end 30, the other end with a large cross section is a buffering end 31, a sealing surface is formed between the sealing end 30 and the valve seat 2, the side wall of the buffering end 31 is provided with a slot 310 for the rotating part 4 to be inserted, the end face of the slot is provided with a concave buffering groove 311, a, the cross section of dashpot 311 is from inside to outside and is gradually increasing progressively, be equipped with reference column 313 in the dashpot 311, the cover is equipped with movable sleeve 315 and spring 314 on the reference column 313, the one end and the spring 314 of movable sleeve 315 are contradicted, and the other end is connected with dashpot 316, dashpot 316 has curved buffering face 317. The rotating part 4 comprises an inserting piece 40 and a movable end 41 connected with the rotating shaft 5, and the movable end 41 is provided with an inwards concave arc-shaped groove 42. The end of the sealing end 30 on the valve clack 3 is provided with an inclined surface. The valve seat 2 is provided with a sealing ring 20, and the valve clack 3 is provided with a sealing ring 32 matched with the sealing ring 20.

The valve is when closing, valve clack 3 is sealed with the contact of disk seat 2 rapidly, the medium of backward flow can produce very big impact force with valve clack 3, when valve clack 3 received big impact force, the working face of impact force is on valve clack 3's buffering dish 316, the arc on the buffering dish 316 can be decomposed to the edge with assaulting, after buffering dish 316 received big impact force, can move in towards dashpot 311, movable sleeve 315 can extrude spring 314 shrink, spring 314 plays the effect of alleviating partial impact force, can play the effect of protection valve clack 3. The valve clack 3 is arranged to be in a round table shape, when the buffering end 31 of the valve clack 3 is impacted, the valve clack 3 can move forwards towards the valve seat 2, when the valve clack moves forwards, the cross section of the valve seat 2 penetrated by the valve clack 3 can be increased, and the sealing performance between the valve clack 3 and the valve seat 2 can be further enhanced. The sealing end 30 of the valve clack 3 is provided with an inclined surface, when the valve is opened, an externally-entering medium can impact a sealing surface, and the inclined surface has the function of enhancing the medium impact force and can improve the opening speed of the valve clack 3.

The rotating piece 4 is inserted into the slot 310 of the valve clack 3 through the inserting piece 40 and fixed through a bolt, so that a detachable structure is formed between the connecting piece and the valve clack 3, and the rotating piece 4 or the valve clack 3 can be replaced in time after being damaged. The rotating part 4 also comprises a movable part with an arc-shaped groove 42, the arc-shaped groove 42 is concave towards the valve seat 2, when the valve is closed, the internal medium impacts the arc-shaped groove 42, and the closing speed of the valve clack 3 can be improved.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a check valve, includes the valve body that is discoid setting, and the valve body has medium channel, medium channel's one end is equipped with the disk seat, and the other end is equipped with the valve clack, the valve clack forms sealed face with the disk seat, be connected with on the valve clack and rotate the piece, it is equipped with the pivot on the rotation piece, be equipped with on the valve body and supply pivot normal running groove, its characterized in that: the valve clack is round platform form setting, and the one end that the cross section is little is sealed end, and the one end that the cross section is big is the buffering end, wherein forms sealed face between sealed end and the disk seat, be equipped with on the lateral wall of buffering end and supply to rotate the piece and insert the slot of establishing, be equipped with the dashpot of indent on its terminal surface, be equipped with the screw-thread fit hole between slot and the dashpot, rotate the piece through the bolt fastening in the slot, the positive slope form of inner wall of dashpot sets up, and the cross section of dashpot is from inside to outside and progressively increases up, be equipped with the reference column in the dashpot, the cover is equipped with movable sleeve and spring on the reference column, the one end and the spring conflict of movable sleeve.

2. A check valve as claimed in claim 1, wherein: the rotating part comprises an inserting piece and a movable end connected with the rotating shaft, and the movable end is provided with an inwards concave arc-shaped groove.

3. A check valve as claimed in claim 1, wherein: the end of the upper sealing end of the valve clack is provided with an inclined plane.

4. A check valve as claimed in claim 1, wherein: the valve seat is provided with a sealing ring, and the valve clack is provided with a sealing ring matched with the sealing ring.