CN212868600U

CN212868600U - Self-sealing check valve

Info

Publication number: CN212868600U
Application number: CN202021638357.XU
Authority: CN
Inventors: 李新宇; 朱贤松; 李微微
Original assignee: Wenzhou Luoke Valve Technology Co ltd
Current assignee: Wenzhou Luoke Valve Technology Co ltd
Priority date: 2020-08-07
Filing date: 2020-08-07
Publication date: 2021-04-02
Anticipated expiration: 2030-08-07

Abstract

The application relates to the technical field of check valves, and discloses a self-sealing check valve, which comprises a valve body, wherein a feeding channel and a discharging channel are arranged in the valve body, the feeding channel is communicated with the discharging channel through a perforation, a valve plate with a sealed perforation is arranged in the discharging channel, the end surface of the valve plate far away from the perforation is fixedly connected with a movable pipe, the outer wall of the movable pipe is provided with a movable hole, the upper end of the valve body is provided with an operation hole communicated with the discharging channel, a valve cover is arranged in the operation hole, the end surface of the valve cover towards the valve plate is fixedly connected with a fixed pipe, the fixed pipe is embedded in the movable pipe, the outer diameter of the movable pipe is the same as the inner diameter of the fixed pipe, the outer wall of the fixed pipe is provided with a fixed hole, a spring is arranged in the fixed pipe, the, this application has the effect that makes the valve plate have self-sealing.

Description

Self-sealing check valve

Technical Field

The utility model belongs to the technical field of the technique of check valve and specifically relates to a self sealss check valve is related to.

Background

At present, a lift check valve refers to a valve which automatically opens and closes a valve flap by the flow of a medium itself to prevent the backflow of the medium, and belongs to an automatic valve which mainly functions to prevent the backflow of the medium, prevent the reverse rotation of a pump and a driving motor, and discharge the medium from a container. Check valves may also be used to provide make-up lines to auxiliary systems where the pressure may rise above the system pressure.

The prior Chinese patent with publication number CN201152383Y discloses a lifting check valve, which comprises a valve body, a valve cover and a valve clack, wherein the section of the valve clack is in an inverted T shape, a guide groove is arranged on the valve cover, and the top of the valve clack is arranged in the guide groove and matched with the guide groove.

The above related technical solutions have the following drawbacks: when the check valve is installed and inclined, the descending speed of the valve clack is reduced, even the valve clack cannot descend effectively, so that the valve cannot be closed effectively, two ends of the valve are communicated, and improvement is needed.

SUMMERY OF THE UTILITY MODEL

In order to improve the problem of the effective whereabouts of valve plate, this application provides a self sealss check valve.

The application provides a pair of self sealss check valve adopts following technical scheme:

the utility model provides a self sealss check valve, includes the valve body, be provided with feedstock channel and discharging channel in the valve body, feedstock channel and discharging channel communicate through perforating, be provided with sealed fenestrate valve plate in the discharging channel, fenestrate terminal surface fixedly connected with activity pipe is kept away from to the valve plate, the movable orifice has been seted up to the outer wall of activity pipe, intercommunication discharging channel's handle hole has been seted up to the valve body upper end, set up the valve gap in the handle hole, the valve gap is towards the fixed pipe of terminal surface fixedly connected with of valve plate, fixed pipe embedding activity is intraductal, the external diameter of activity pipe is the same with the internal diameter of fixed pipe, the fixed orifices has been seted up to the outer wall of fixed pipe, fixed intraductal spring that is provided with, the both ends of spring respectively with.

By adopting the technical scheme, when the fluid in the feeding channel is led to the discharging channel, the fluid drives the valve plate to ascend together with the fixed pipe, the air in the fixed pipe and the air in the movable pipe are discharged through the fixed hole or the movable hole, and meanwhile, the spring is compressed and deformed; when the fluid in the feeding channel is reduced, the spring is reset to enable the valve plate to move towards the direction far away from the valve cover, the valve plate is enabled to seal the through hole again, the sealing effect is achieved, and the valve plate has the self-sealing effect; and a limiting structure is arranged to limit the valve cover to move and prevent the fluid in the valve from flowing out of the operation hole.

Preferably, the limiting ring groove has been seted up to the operation hole inner wall, the operation annular has been seted up to the outer periphery of valve gap, limit structure is provided with the self sealss gasket including setting up the limiting ring piece in the limiting ring groove and setting up in the operation annular, the limiting ring piece is laminated with the self sealss gasket towards the terminal surface of valve plate.

By adopting the technical scheme, the limiting ring groove has the effect of fixing the limiting ring block, and the self-sealing gasket has the sealing effect and prevents fluid from flowing out of the operation hole; in addition, the fluid in the valve applies thrust to the valve cover, the valve cover applies the thrust to the self-sealing gasket, the self-sealing gasket applies the received force to the limiting ring block, and the limiting ring block is arranged in the limiting ring groove and applies the received force to the valve body, so that the valve plate is limited to move.

Preferably, the inner circumferential surface of the self-sealing gasket is provided with a first chamfer, a first chamfer inclined plane is arranged towards the valve plate, a second chamfer is arranged at the joint of the lower end surface of the operation ring groove and the outer circumferential surface of the valve cover, and the first chamfer inclined plane is attached to the second chamfer inclined plane.

Through adopting above-mentioned technical scheme, through first chamfer and second chamfer, with the perpendicular application of power that the valve gap received on the operation hole inner wall, make self sealss gasket inseparabler with the valve body to improve the leakproofness of valve.

Preferably, the limiting structure further comprises a pressing sheet, and the pressing sheet is located between the limiting ring block and the self-sealing gasket.

Through adopting above-mentioned technical scheme, accept the effort that comes from self-sealing gasket through the clamp plate, with effort evenly distributed to the terminal surface of spacing ring piece towards the valve plate.

Preferably, the limiting ring block consists of n arc-shaped blocks with the same structure, and n is more than or equal to 3.

Through adopting above-mentioned technical scheme, adopt a plurality of arc pieces, make things convenient for the staff to install the arc piece in the spacing annular.

Preferably, the operation hole is provided with a limiting cover, and the limiting cover is connected with the valve cover through a fastener.

Through adopting above-mentioned technical scheme, set up spacing lid. Further firstly by a limit cover

Preferably, the fastener includes screw rod and nut, screw rod and valve gap face limit ring piece's terminal surface threaded connection, limit cover opens the through-hole that supplies the screw rod to pass, nut and screw rod threaded connection.

By adopting the technical scheme, the valve cover and the limiting cover can be conveniently connected or separated through the screw and the nut, and the components on the check valve can be conveniently replaced; the screw rod is arranged on the valve cover, so that when the valve cover is connected with the limiting cover, a worker can conveniently find the installation direction of the limiting cover through the screw rod and the through hole, the guiding effect is achieved, and the limiting cover can be conveniently installed on the valve body; in addition, when the screw rod is damaged, the damaged screw rod is convenient for workers to replace.

Preferably, the end face of the limiting cover far away from the valve cover is coplanar with the upper end face of the valve body.

Through adopting above-mentioned technical scheme, prevent that spacing lid from revealing outside the valve body, avoid the staff mistake to touch spacing lid and make the valve plate connect stably.

Preferably, one end, far away from the valve plate, of the limiting cover is fixedly connected with a lifting ring.

Through adopting above-mentioned technical scheme, can make things convenient for the staff to remove the check valve through rings to remove the check valve to the place that needs.

In summary, the present application includes at least one of the following beneficial technical effects:

1. when fluid in the feeding channel is led to the discharging channel, the fluid drives the valve plate to ascend together with the fixed pipe, air in the fixed pipe and the movable pipe is discharged through the fixed hole or the movable hole, and meanwhile, the spring is compressed and deformed; when the fluid in the feeding channel is reduced, the spring is reset to enable the valve plate to move towards the direction far away from the valve cover, the valve plate is enabled to seal the through hole again, the sealing effect is achieved, and the valve plate has the self-sealing effect; a limiting structure is arranged to limit the valve cover to move and prevent fluid in the valve from flowing out of the operation hole;

2. when installing spacing lid, can find spacing lid position fast through the screw rod, spacing lid and valve gap connection are covered with the rethread nut.

Drawings

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

FIG. 2 is an enlarged partial schematic view of portion A of FIG. 1;

fig. 3 is a partially enlarged schematic view of a portion B in fig. 1.

Reference numerals: 1. a valve body; 11. a feed channel; 12. a discharge channel; 13. perforating; 14. an operation hole; 15. a limiting ring groove; 2. a valve plate; 21. a movable tube; 22. a movable hole; 3. a valve cover; 31. a fixed tube; 32. a fixing hole; 33. a spring; 34. operating the ring groove; 4. a limiting structure; 41. a limit ring block; 42. self-sealing gaskets; 43. tabletting; 5. a limiting cover; 51. a through hole; 52. a hoisting ring; 6. a fastener; 61. a screw; 62. and a nut.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment discloses a self-sealing check valve. Referring to fig. 1, the check valve includes a valve body 1, a feed passage 11 and a discharge passage 12 are provided in the valve body 1, and the feed passage 11 is communicated with the discharge passage 12 through a through hole 13.

Referring to fig. 1 and 2, a valve plate 2 for sealing the through hole 13 is arranged in the discharge channel 12, a movable pipe 21 is fixedly connected to an end surface of the valve plate 2 far away from the through hole 13, and a movable hole 22 is formed in an outer wall of the movable pipe 21. An operation hole 14 communicated with the discharging channel 12 is formed in the upper end of the valve body 1, and a valve cover 3 is arranged in the operation hole 14. The valve gap 3 is towards the terminal surface fixedly connected with fixed pipe 31 of valve plate 2, and fixed orifices 32 have been seted up to the outer wall of fixed pipe 31. The fixed pipe 31 is fitted into the movable pipe 21, and the outer diameter of the movable pipe 21 is the same as the inner diameter of the fixed pipe 31. A spring 33 is provided in the fixed pipe 31, and both ends of the spring 33 are respectively abutted against the valve rod and the valve plate 2.

Referring to fig. 1 and 3, a limiting structure 4 for limiting the movement of the valve cover 3 is arranged on the valve body 1. The inner wall of the operation hole 14 is provided with a limit ring groove 15, and the outer circumference of the valve cover 3 is provided with an operation ring groove 34. The limiting structure 4 comprises a limiting ring block 41 arranged in the limiting ring groove 15, and a self-sealing gasket 42 and a pressing sheet 43 arranged in the operation ring groove 34.

Referring to fig. 1 and 3, the tab 43 is located between the stop ring block 41 and the self-sealing washer 42. The limiting ring block 41 is composed of n arc blocks with the same structure, and n is more than or equal to 3. The inner circumferential surface of the self-sealing gasket 42 is provided with a first chamfer, the first chamfer slope being disposed toward the valve plate 2. A second chamfer is arranged at the joint of the lower end surface of the operation ring groove 34 and the outer circumferential surface of the valve cover 3, and the first chamfer inclined surface is attached to the second chamfer inclined surface.

Referring to fig. 1 and 3, when fluid flows in the valve, the fluid applies a thrust to the valve cap 3, and because the first chamfer inclined plane is attached to the second chamfer inclined plane, the self-sealing gasket 42 vertically applies a part of the force applied to the valve cap 3 to the inner wall of the operation hole 14, so that the self-sealing gasket 42 is closer to the valve body 1, and the sealing performance of the valve is improved; the self-sealing gasket 42 vertically applies another force to the stop ring block 41 from the bonnet 3, and the stop ring block 41 prevents the bonnet 3 from moving away from the through hole 13.

Referring to fig. 1 and 3, the operation hole 14 is provided with a stopper cover 5, and the stopper cover 5 is coupled with the valve cap 3 by a fastening member 6. The fastener 6 comprises a screw 61 and a nut 62, the screw 61 is in threaded connection with the end face of the valve cover 3 facing the limit ring block 41, the limit cover 5 is provided with a through hole 51 for the screw 61 to pass through, and the nut 62 is in threaded connection with the screw 61. The end face of the limiting cover 5 far away from the valve cover 3 is coplanar with the upper end face of the valve body 1. Adopt screw rod 61 to have the effect of direction, the staff of being convenient for finds the installation direction of spacing lid 5 accurately. Set up screw rod 61 and nut 62, make things convenient for the staff to be connected valve gap 3 and spacing lid 5 fixedly.

Referring to fig. 1, a lifting ring 52 is fixedly connected to one end of the limiting cover 5 away from the valve plate 2, and the lifting ring 52 can facilitate a worker to move the valve to a required position.

The implementation principle of self sealss check valve of the embodiment of this application does: when the fluid in the inlet channel 11 is led to the outlet channel 12, the fluid drives the valve plate 2 to ascend together with the fixed pipe 31, and the air in the fixed pipe 31 and the movable pipe 21 is discharged through the fixed hole 32 and the movable hole 22, and the spring 33 is compressed and deformed. When the fluid in the feed channel 11 decreases, the spring 33 returns to move the valve plate 2 away from the valve cover 3, while air is again admitted into the movable tube 21 and the fixed tube 31 through the fixed holes 32 and the movable holes 22 until the valve plate 2 again seals the through hole 13.

The above description is only a preferred embodiment of the present application and should not be taken as limiting the present application, and any modifications, equivalents, improvements and the like made within the design concept of the present application should be included in the protection scope of the present application.

Claims

1. A self-sealing check valve, comprising a valve body (1), characterized in that: the improved valve is characterized in that a feeding channel (11) and a discharging channel (12) are arranged in the valve body (1), the feeding channel (11) is communicated with the discharging channel (12) through a perforation (13), a valve plate (2) for sealing the perforation (13) is arranged in the discharging channel (12), a movable pipe (21) is fixedly connected to the end face, far away from the perforation (13), of the valve plate (2), a movable hole (22) is formed in the outer wall of the movable pipe (21), an operating hole (14) communicated with the discharging channel (12) is formed in the upper end of the valve body (1), a valve cover (3) is arranged in the operating hole (14), a fixed pipe (31) is fixedly connected to the end face, facing the valve plate (2), of the valve cover (3), the fixed pipe (31) is embedded into the movable pipe (21), the outer diameter of the movable pipe (21) is the same as the inner diameter of the fixed pipe (31), and a fixed hole, be provided with spring (33) in fixed pipe (31), the both ends of spring (33) respectively with valve rod and valve plate (2) butt, be provided with limit structure (4) that spacing valve gap (3) removed on valve body (1).

2. A self-sealing check valve as defined in claim 1, wherein: spacing annular (15) have been seted up to handle hole (14) inner wall, operation annular (34) have been seted up to valve gap (3) outer periphery, limit structure (4) are provided with self sealss gasket (42) including setting up spacing ring piece (41) in spacing annular (15) and setting up in operation annular (34), spacing ring piece (41) are laminated with self sealss gasket (42) towards the terminal surface of valve plate (2).

3. A self-sealing check valve as defined in claim 2, wherein: the interior circumference of self sealss gasket (42) is provided with first chamfer, first chamfer inclined plane sets up towards valve plate (2), the second chamfer has been seted up with the junction of the outer periphery of valve gap (3) to the lower terminal surface of operation annular (34), first chamfer inclined plane and the laminating of second chamfer inclined plane.

4. A self-sealing check valve as defined in claim 2, wherein: the limiting structure (4) further comprises a pressing sheet (43), and the pressing sheet (43) is located between the limiting ring block (41) and the self-sealing gasket (42).

5. A self-sealing check valve as defined in claim 2, wherein: the limiting ring block (41) is composed of n arc blocks with the same structure, and n is more than or equal to 3.

6. A self-sealing check valve as defined in claim 2, wherein: the operating hole (14) is provided with a limiting cover (5), and the limiting cover (5) is connected with the valve cover (3) through a fastener (6).

7. A self-sealing check valve as defined in claim 6, wherein: fastener (6) have included screw rod (61) and nut (62), screw rod (61) and valve gap (3) are towards the terminal surface threaded connection of spacing ring piece (41), through-hole (51) that supply screw rod (61) to pass are seted up in spacing lid (5), nut (62) and screw rod (61) threaded connection.

8. A self-sealing check valve as defined in claim 6, wherein: the end face, far away from the valve cover (3), of the limiting cover (5) is coplanar with the upper end face of the valve body (1).

9. A self-sealing check valve as defined in claim 6, wherein: one end, far away from the valve plate (2), of the limiting cover (5) is fixedly connected with a lifting ring (52).