CN209892799U

CN209892799U - Check valve

Info

Publication number: CN209892799U
Application number: CN201920126254.6U
Authority: CN
Inventors: 王良辉; 王茂杰
Original assignee: Wenzhou Haige Valve Co Ltd
Current assignee: Wenzhou Haige Valve Co Ltd
Priority date: 2019-01-24
Filing date: 2019-01-24
Publication date: 2020-01-03
Anticipated expiration: 2029-01-24

Abstract

The utility model discloses a check valve relates to valve technical field. The technical key points of the valve are that the valve comprises a valve body and a valve cover which is rotationally connected in the valve body, a circulation port is arranged in the valve body, the valve cover can be connected with a sealing and circulation port in a covering mode, and an elastic piece which drives the valve cover to rotate towards one side of the circulation port is arranged on the valve body; the outer side wall of the valve body is provided with a mounting groove for mounting an elastic piece, and the elastic piece comprises a valve plate, a cover cap, a spring and a support rod; the valve plate is attached to the inner wall of the mounting groove and slides in the mounting groove; one end of the abutting rod is connected with the valve plate, and the other end of the abutting rod penetrates through the mounting groove to extend into the valve body and abuts against the end face, far away from the flow port, of the valve cover; the cover cap is in threaded connection with the opening of the mounting groove; the spring sets up between block and valve block for the elasticity that the valve block slided to the mounting groove inboard is provided, the utility model has the advantages of promote the elastomeric element life-span.

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 also called a check valve, a one-way valve or a check valve, and has a function of preventing the medium in the pipeline from flowing in a directional manner and not flowing backwards. The check valve is a common valve device, and the principle of the check valve is to realize opening and closing by the flowing force of a medium so as to prevent the backflow of the medium. The check valve is mainly used for pipelines with unidirectional medium flow and only allows the medium to flow in one direction.

At present, chinese patent with publication number CN204062024U discloses a check valve, which is characterized in that a rotary opening and closing structure is adopted, the appearance is spindle-shaped, a seal ring is embedded in a valve flap and is fastened by a bolt and a nut through a pressure plate, the valve flap is fixed in a valve body by a pin shaft, a torsion spring is sleeved in the pin shaft, one end of the torsion spring is abutted against the inner wall of the valve body, the other end is pressed in the center of the back of the valve flap, a valve seat is embedded in the valve body and is blocked and screwed in a valve body hole; the valve clack is propped against the valve seat to be sealed by the action of the eccentric gravity of the valve clack and the torsion spring at ordinary times; when the pressure of the water outlet side is reduced, the water flow pushes the valve clack to open the water outlet.

Similar to the check valve described above, in the prior art, an elastic component is generally disposed in the valve, so that when the valve plate is closed, the elastic component provides elasticity, so that the valve plate is tightly pressed on the inner wall of the valve body; however, the elastic member is generally disposed directly in the valve body and is eroded by the fluid, thereby reducing the life of the elastic member.

SUMMERY OF THE UTILITY MODEL

To solve the technical problem, an object of the present invention is to provide a check valve having an advantage of improving the life of an elastic member.

In order to achieve the above purpose, the utility model provides a following technical scheme: a check valve comprises a valve body and a valve cover rotationally connected in the valve body, wherein a flow opening is formed in the valve body, the valve cover can be connected with a sealing and flow opening in a covering mode, and an elastic element for driving the valve cover to rotate towards one side of the flow opening is arranged on the valve body; the outer side wall of the valve body is provided with a mounting groove for mounting an elastic piece, and the elastic piece comprises a valve plate, a cover cap, a spring and a support rod; the valve plate is attached to the inner wall of the mounting groove and slides in the mounting groove; one end of the abutting rod is connected with the valve plate, and the other end of the abutting rod penetrates through the mounting groove to extend into the valve body and abuts against the end face, far away from the flow port, of the valve cover; the cover cap is in threaded connection with the opening of the mounting groove; the spring is arranged between the cover cap and the valve plate and used for providing the elasticity for the valve plate to slide towards the inner side of the mounting groove.

Through adopting above-mentioned technical scheme, the butt pole elasticity butt is on the valve gap under the effect of spring, has given the valve gap fastening pressfitting elastic force on the circulation mouth. And the spring setting is in the mounting groove simultaneously, and the valve block separates spring and valve body mutually for the spring can not contact with the rivers of valve body, has consequently guaranteed that the spring is difficult to be corroded by the fluid, has promoted the spring life-span, and provides elastic stability.

The utility model discloses further set up to: the circumference outside of valve block is connected with the sealing washer of butt in mounting groove inner wall.

Through adopting above-mentioned technical scheme, the sealing washer has the flexibility, guarantees the leakproofness of valve block and mounting groove in the slip process.

The utility model discloses further set up to: the middle part of the end face of the valve block facing the cover cap is convexly provided with a positioning salient point inserted in the spring.

Through adopting above-mentioned technical scheme, the protruding effect that has the direction of location bump guarantees that the spring can slide along the valve block and discover to produce deformation.

The utility model discloses further set up to: and a limit stop block for limiting the turnover angle of the valve cover is arranged in the valve body.

Through adopting above-mentioned technical scheme, limit stop limits valve gap upset angle, avoids the excessive upset of valve gap to be difficult for changeing back.

The utility model discloses further set up to: when the valve cover is turned over to the limited stop block for clamping, the abutting rod is abutted to the valve cover vertically.

Through adopting above-mentioned technical scheme, support the pole and overturn to receive limit stop joint when the valve gap perpendicular butt in on the valve gap to guaranteed that the valve gap resets under the state that the valve gap is in the complete opening, support the pole and have the biggest elasticity and order about the valve gap.

The utility model discloses further set up to: one end of the abutting rod facing the valve cover is arc-shaped.

Through adopting above-mentioned technical scheme, circular-arc tip has the effect that all-round butt can both be used, is fit for the apron that can overturn.

The utility model discloses further set up to: and a slide way groove for the sliding of the abutting rod is formed in the end surface of the valve cover facing the abutting rod.

Through adopting above-mentioned technical scheme, support the pole and can receive the spacing and the effort in the slide groove at the in-process of valve gap upset for support the pole both ends atress, guarantee to support the stability of pole position.

The utility model discloses further set up to: the valve cover comprises a valve plate hinged in the valve body and a sealing gasket fixedly connected to one end, facing the flow opening, of the valve plate.

Through adopting above-mentioned technical scheme, the valve plate provides the rigidity and supports, and sealed the pad provides flexible seal to reached, the stable sealed of valve gap circulation mouth.

Compared with the prior art, the beneficial effects of the utility model are that:

(1) the spring is separated from the valve body, so that the spring cannot be contacted with water flow of the valve body, and the service life of the spring is prolonged;

(2) through setting up limit stop, restriction valve gap rotation angle avoids the excessive upset of valve gap to be difficult for changeing back.

Drawings

FIG. 1 is a schematic cross-sectional view of the present embodiment;

fig. 2 is an enlarged schematic view of a in fig. 1.

Reference numerals: 1. a valve body; 2. a valve cover; 3. an elastic member; 4. a valve cavity; 5. a flow port; 6. mounting grooves; 7. a valve plate; 8. capping; 9. a spring; 10. a support rod; 11. a seal ring; 12. positioning the salient points; 13. a gasket; 14. a valve plate; 15. a chute; 16. and a limit stop.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and examples.

An embodiment, a check valve, as shown in fig. 1, includes a valve body 1, a bonnet 2, and an elastic member 3. A valve cavity 4 for fluid to pass through is arranged in the valve body 1, and a flow opening 5 for sealing the valve cover 2 is arranged in the middle of the valve cavity 4 of the valve body 1. One end of the valve cover 2 is rotatably connected to the valve body 1, so that the valve cover 2 is rotatably abutted to the flow port 5 to realize sealing. The elastic member 3 is provided in the valve body 1 and has elasticity for urging the bonnet 2 to rotate toward the flow port 5. Therefore, when the fluid flows from the flow opening 5 to the valve cover 2 side, the valve cover 2 is opened under the impact of the fluid, so that the fluid passes through the flow opening 5; when the fluid flows from the valve cap 2 side to the flow port 5 side, the valve cap 2 is brought into contact with the flow port 5 and is sealingly attached to the flow port 5, thereby restricting the flow of the fluid. Thereby achieving the effect of one-way circulation.

As shown in fig. 1 and 2, an installation groove 6 for installing the elastic element 3 is obliquely formed on the outer side wall of the valve body 1, a slide hole communicated with the valve cavity 4 is formed on the inner wall of the installation groove 6, and the elastic element 3 comprises a valve plate 7, a cover cap 8, a spring 9 and a support rod 10; the valve plate 7 is attached to the inner wall of the mounting groove 6 and slides in the mounting groove 6; one end of the abutting rod 10 is connected with the valve plate 7, the other end of the abutting rod penetrates through the sliding hole and extends into the valve cavity 4, and the end face of the abutting rod 10 abuts against the end face, far away from the flow opening 5, of the valve cover 2. The cap 8 is in threaded connection with the opening of the mounting groove 6; the spring 9 is arranged between the cover cap 8 and the valve plate 7 and provides elasticity for the valve plate 7 to slide towards the inner side of the mounting groove 6. The abutting rod elastically abuts against the valve cap 2 under the action of the spring 9, and an elastic force is given to the valve cap 2 to be tightly pressed on the flow opening 5. Screwing the cap 8 at the same time enables the elasticity of the spring 9 to be adjusted.

Specifically, as shown in fig. 1 and 2, a seal ring 11 abutting against the inner wall of the mounting groove 6 is connected to the circumferential outer side of the valve sheet 7. The sealing performance of the valve plate 7 and the mounting groove 6 in the sliding process is ensured. The middle part of the end surface of the valve plate 7 facing the cap 8 is convexly provided with a positioning salient point 12. One end of the spring 9 abuts against the end face of the inner side of the cover cap 8, and the other end of the spring is sleeved on the positioning salient point 12, so that the spring 9 can slide along the valve plate 7 and is found to deform. One end of the abutting rod 10 facing the valve cover 2 is set to be arc-shaped. The arc-shaped end portion can still be stably attached to the bonnet 2 after the bonnet 2 is turned over.

As shown in fig. 1, the valve cover 2 includes a valve plate 14 hinged inside the valve body 1 and a packing 13 fixedly attached to an end of the valve plate 14 facing the communication port 5. Valve plate 14 and sealed 13 of filling up pass through bolted connection, and is concrete, and the connecting hole has been seted up in the middle part of valve plate 14 and sealed 13, through penetrating the bolt in the connecting hole, and the reuse nut is screwed the bolt, can realize the zonulae occludens to valve plate 14 and sealed 13. After fixation, a rigid support is provided by the valve plate 14 and the gasket 13 provides a flexible seal, achieving a stable sealing of the venting opening 5 of the valve cap 2.

Further, as shown in fig. 1 and 2, a slide groove 15 for allowing the abutting rod 10 to slide is formed on an upper side of the end surface of the valve plate 14 facing the abutting rod 10. The end of the resisting rod 10 is contacted and glided in the slide way groove 15. The abutting rod 10 can be limited and acted by the slide channel 15 in the process of overturning the valve cover 2, so that two ends of the abutting rod 10 are stressed, and the stability of the position of the abutting rod 10 is ensured.

As shown in fig. 1 and 2, the valve body 1 is provided with a limit stop 16 at one side of the valve cavity 4 close to the hinge joint of the valve cover 2, the limit stop 16 is located on the turning path of the valve cover 2, and the limit stop 16 is inclined towards the end surface of one side of the valve cover 2 to limit the turning angle of the valve cover 2, so that the valve cover 2 is prevented from being turned over excessively and is not easy to turn back. The limit stopper 16 preferably limits the flip angle of the valve closure 2 to 30 ° in this embodiment. Further, the direction that the mounting groove 6 was seted up is perpendicular with limit stop 16 towards a side end face of valve gap 2 for when valve gap 2 overturned to limit stop 16 butt, support pole 10 perpendicular butt on valve gap 2. The valve cover 2 is ensured to be in a fully opened state, and the abutting rod 10 has the maximum elasticity to drive the valve cover 2 to reset.

The utility model discloses a working process and beneficial effect as follows:

when fluid flows from the flow opening 5 to the valve cover 2 side, the valve cover 2 is opened under the impact of the fluid, so that the fluid passes through the flow opening 5; in the process, the abutting rod 10 is retracted into the mounting groove 6 under the abutting action of the valve cover 2, and the spring 9 is extruded through the valve plate 7. Because spring 9 sets up in mounting groove 6, valve block 7 separates spring 9 and valve pocket 4 mutually for spring 9 can not contact with the rivers of valve body 1, has consequently guaranteed that spring 9 is difficult for being corroded by the fluid, has promoted spring 9 life-span, and provides elastic stability.

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 valve body (1) and rotates valve gap (2) of connecting in valve body (1), be provided with circulation mouth (5) in valve body (1), valve gap (2) can cover connect on sealed and circulation mouth (5), its characterized in that: the valve body (1) is provided with an elastic piece (3) which drives the valve cover (2) to rotate towards one side of the circulation port (5); the outer side wall of the valve body (1) is provided with a mounting groove (6) for mounting the elastic piece (3), and the elastic piece (3) comprises a valve plate (7), a cover cap (8), a spring (9) and a support rod (10); the valve plate (7) is attached to the inner wall of the mounting groove (6) and slides in the mounting groove (6); one end of the abutting rod (10) is connected with the valve plate (7), and the other end of the abutting rod penetrates through the mounting groove (6) and extends into the valve body (1) to abut against the end face, far away from the circulation port (5), of the valve cover (2); the cover cap (8) is in threaded connection with an opening of the mounting groove (6); the spring (9) is arranged between the cover cap (8) and the valve plate (7) and used for providing the elasticity for the valve plate (7) to slide towards the inner side of the mounting groove (6).

2. The check valve of claim 1, wherein: the circumferential outer side of the valve plate (7) is connected with a sealing ring (11) which is abutted against the inner wall of the mounting groove (6).

3. The check valve of claim 1, wherein: the middle part of the end face of the valve plate (7) facing the cover cap (8) is convexly provided with a positioning salient point (12) inserted in the spring (9).

4. The check valve of claim 1, wherein: and a limit stop block (16) for limiting the turning angle of the valve cover (2) is arranged in the valve body (1).

5. The check valve of claim 4, wherein: when the valve cover (2) is turned to the position limiting stop block (16) for clamping, the abutting rod (10) is vertically abutted to the valve cover (2).

6. The check valve of claim 1, wherein: one end of the abutting rod (10) facing the valve cover (2) is arc-shaped.

7. The check valve of claim 6, wherein: the end face, facing the abutting rod (10), of the valve cover (2) is provided with a slide way groove (15) for the abutting rod (10) to slide.

8. The check valve of claim 1, wherein: the valve cover (2) comprises a valve plate (14) hinged in the valve body (1) and a sealing gasket (13) fixedly connected to one end, facing the circulation port (5), of the valve plate (14).