CN220956910U

CN220956910U - Ball valve capable of relieving pressure

Info

Publication number: CN220956910U
Application number: CN202322547574.8U
Authority: CN
Inventors: 赵仕发; 周芬芬; 舒平; 赵龙威; 万华明; 许浩; 赵倩; 赵龙名
Original assignee: Zhejiang Datang Valve Co ltd
Current assignee: Zhejiang Datang Valve Co ltd
Priority date: 2023-09-19
Filing date: 2023-09-19
Publication date: 2024-05-14
Anticipated expiration: 2033-09-19

Abstract

The utility model discloses a pressure-relieving ball valve, which comprises a valve seat, a ball valve core and a valve rod, wherein the valve seat comprises a middle seat body and side seat bodies, the two side seat bodies are arranged and positioned at two sides of the middle seat body, lugs are arranged on the middle seat body and the side seat bodies and are fixedly connected through bolts, an installation seat is arranged on the middle seat body, one end of the valve rod penetrates through the installation seat to be detachably connected with the ball valve core, the other end of the valve rod is provided with a hand wheel, the ball valve core is positioned in the middle seat body, and a movable sealing sleeve is arranged in the side seat body.

Description

Ball valve capable of relieving pressure

Technical Field

The utility model discloses a ball valve capable of relieving pressure, and belongs to the technical field of valves.

Background

The ball valve, the opening and closing piece (ball valve core) is driven by the valve rod and rotates around the axis of the ball valve. The device can also be used for regulating and controlling fluid, wherein the hard seal V-shaped ball valve has strong shearing force between the V-shaped ball core and the metal valve seat of the hard alloy for surfacing, and is particularly suitable for mediums containing fibers, tiny solid particles and the like. When the existing ball valve is closed, fluid pressure can fully act on the ball valve core, so that when the valve is not opened for a long time or the fluid pressure is high, the valve is required to overcome high fluid resistance, the opening is difficult, the ball valve can achieve the pressure release effect only by rotating the ball valve core, and under the condition that the valve is not fully opened, the local position is easily subjected to overlarge fluid pressure, so that the ball valve core is worn, and the tightness of the ball valve is affected.

Disclosure of utility model

The utility model aims to solve the problems in the prior art and provides a ball valve capable of relieving pressure.

The ball valve comprises a valve seat, a ball valve core and a valve rod, wherein the valve seat comprises a middle seat body and side seat bodies, two side seat bodies are arranged on the two sides of the middle seat body, lugs are arranged on the middle seat body and the side seat bodies and fixedly connected through bolts, an installation seat is arranged on the middle seat body, one end of the valve rod penetrates through the installation seat to be detachably connected with the ball valve core, a hand wheel is arranged at the other end of the valve rod, the ball valve core is arranged in the middle seat body, a movable sealing sleeve is arranged in the side seat body, a limiting piece is arranged between the movable sealing sleeve and the side seat body, one end of the movable sealing sleeve is in contact with the ball valve core, a flow hole is formed in the ball valve core, two pressure relief holes perpendicular to the axis of the flow hole are further formed in the ball valve core, a movable sealing piece is arranged in the pressure relief holes, and an adjusting piece for controlling the movable sealing piece to move and enabling the pressure relief holes to be opened is arranged on the inner side of the valve rod.

Preferably, the movable sealing piece comprises a first limit bolt, a first spring and a nut, wherein the two sides of the ball valve core corresponding to the pressure relief hole are provided with mounting holes, the diameter of the end part of the first limit bolt is larger than that of the pressure relief hole and smaller than that of the mounting hole, the nut is in threaded connection with the first limit bolt, and the first spring is sleeved on the first limit bolt and applies acting force for blocking the pressure relief hole to the first limit bolt.

Preferably, the regulating part comprises a movable rod, a headless screw and a second spring, the movable rod is of a stepped shaft structure, one end with a large diameter is close to the hand wheel, one end with a small diameter penetrates through the valve rod and extends into the ball valve core, the second spring is sleeved on the movable rod, two ends of the second spring are respectively abutted against the movable rod and the valve rod, the headless screw is in threaded connection with the valve rod, and one end of the movable rod is provided with an inclined plane abutted against the first limit bolt.

Preferably, the limiting piece comprises a second limiting bolt and a third spring, one end of the second limiting bolt penetrates through the movable sealing sleeve and then is fixedly connected with the side seat body, the third spring is sleeved on the second limiting bolt, and two ends of the third spring are respectively abutted against the side seat body and the movable sealing sleeve.

Preferably, the middle seat body is provided with a sealing frustum, and the side seat body is provided with a groove matched with the sealing frustum.

Preferably, a cavity is arranged in the mounting seat, sealing filler is filled in the cavity, a sealing cover is arranged on the mounting seat, and a protrusion matched with the cavity is arranged on the sealing cover.

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

Through increase pressure release hole and movable sealing spare on the ball case, rely on the activity that the regulating part can control movable sealing spare for the pressure release hole keeps opening or closed state, makes the ball valve when closed state, and the fluid in the side seat body can pass through the pressure release hole, thereby reaches the effect of pressure release, also can reduce the pressure when the valve is opened simultaneously.

Drawings

FIG. 1 is a schematic diagram of a pressure-releasing ball valve according to the present utility model;

FIG. 2 is a cross-sectional view I of a pressure-releasable ball valve of the present utility model;

FIG. 3 is a second cross-sectional view of a pressure-releasable ball valve of the present utility model;

FIG. 4 is an enlarged view of a portion of FIG. 3 at A;

FIG. 5 is a schematic view of the structure of the adjusting member and the movable sealing member according to the present utility model;

Reference numerals: 1. a middle seat body; 2. a side seat body; 3. a mounting base; 4. a limiting piece; 5. an adjusting member; 6. sealing cover; 7. a hand wheel; 8. a lug; 9. the second limit bolt; 10. a first spring; 11. a headless screw; 12. a movable rod; 13. an inclined plane; 14. a protrusion; 15. a third spring; 16. a groove; 17. a ball valve core; 18. sealing the frustum; 19. a mounting hole; 20. a flow hole; 21. a nut; 22. a pressure relief hole; 23. a first limit bolt; 24. a movable sealing sleeve; 25. a movable seal; 26. a second spring; 27. a valve rod.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 1-5, a ball valve capable of relieving pressure comprises a valve seat, a ball valve core 17 and a valve rod 27, wherein the valve seat comprises a middle seat body 1 and side seat bodies 2, two side seat bodies 2 are arranged and positioned on two sides of the middle seat body 1, lugs 8 are arranged on the middle seat body 1 and the side seat bodies 2 and fixedly connected through bolts, an installation seat 3 is arranged on the middle seat body 1, one end of the valve rod 27 penetrates through the installation seat 3 and is detachably connected with the ball valve core 17, the other end of the valve rod 27 is provided with a hand wheel 7, the ball valve core 17 is positioned in the middle seat body 1, a movable sealing sleeve 24 is arranged in the side seat body 2, a limiting piece 4 is arranged between the movable sealing sleeve 24 and the side seat body 2, one end of the movable sealing sleeve 24 is in abutting sealing with the ball valve core 17, a circulation hole 20 is arranged on the ball valve core 17, two pressure relieving holes 22 perpendicular to the axis of the circulation hole 20 are also arranged on the ball valve core 17, a movable sealing piece 25 is arranged in the pressure relieving hole 22, and an adjusting piece 5 for controlling the movable sealing piece 25 to move and opening the pressure relieving hole 22 is arranged on the inner side of the valve rod 27.

The movable sealing piece 25 comprises a first limit bolt 23, a first spring 10 and a nut 21, wherein the two sides of the ball valve core 17 corresponding to the pressure relief hole 22 are provided with mounting holes 19, the diameter of the end part of the first limit bolt 23 is larger than that of the pressure relief hole 22 and smaller than that of the mounting hole 19, the nut 21 is in threaded connection with the first limit bolt 23, the first spring 10 is sleeved on the first limit bolt 23 and applies the acting force for blocking the pressure relief hole 22 to the first limit bolt 23, the acting force applied by the first spring 10 to the nut 21 enables the end part of the first limit bolt 23 to cover the pressure relief hole 22, fluid cannot pass through the pressure relief hole 22, and the acting force applied by the fluid to the first limit bolt 23 enables the sealing performance between the first limit bolt 23 and the ball valve core 17 to be better.

The regulating part 5 comprises a movable rod 12, a headless screw 11 and a second spring 26, wherein the movable rod 12 is of a stepped shaft structure, one end with a large diameter is close to the hand wheel 7, one end with a small diameter penetrates through the valve rod 27 and extends into the ball valve core 17, the second spring 26 is sleeved on the movable rod 12, two ends of the second spring are respectively abutted against the movable rod 12 and the valve rod 27, the headless screw 11 is in threaded connection with the valve rod 27, one end of the movable rod 12 is provided with an inclined plane 13 abutted against the first limit bolt 23, the headless screw 11 is used for pushing the movable rod 12 to move through the knob, the second spring 26 is compressed, one end of the movable rod 12 is used for pushing the first limit bolt 23 to move towards one side through the inclined plane 13, so that the end of the first limit bolt 23 does not shade the pressure relief hole 22 any more, partial fluid can flow out of the mounting hole 19 and the pressure relief hole 22 when the ball valve is closed, the pressure relief effect is achieved, and when the headless screw 11 is reversed, the second spring 26 drives the movable rod 12 to reset upwards, the first limit bolt 23 is used for pushing the pressure relief hole 22 to move under the action of the first spring 10, and the pressure relief hole 22 is blocked by the pressure relief hole 22.

The limiting piece 4 comprises a second limiting bolt 9 and a third spring 15, one end of the second limiting bolt 9 penetrates through the movable sealing sleeve 24 and then is fixedly connected with the side seat body 2, the third spring 15 is sleeved on the second limiting bolt 9, two ends of the third spring are respectively abutted against the side seat body 2 and the movable sealing sleeve 24, the third spring 15 exerts acting force on the movable sealing sleeve 24, so that the movable sealing sleeve 24 can keep abutting sealing with the ball valve core 17, and when the ball valve core 17 rotates, the ball valve core 17 can push the movable sealing sleeve 24 to compress the third spring 15, so that the soft sealing effect is achieved.

Be provided with sealed frustum 18 on the intermediate seat body 1, be provided with on the side seat body 2 with sealed frustum 18 complex recess 16, intermediate seat body 1 and side seat body 2 pass through sealed frustum 18 and recess 16's cooperation for have better leakproofness between the two, in order to avoid the condition that the seepage appears in the fluid, be provided with the cavity in the mount pad 3, the cavity intussuseption is filled with sealing filler, is provided with sealed lid 6 on the mount pad 3, be provided with on the sealed lid 6 with cavity complex protruding 14, sealed lid 6 passes through bolt and mount pad 3 fixed connection, make protruding 14 can compact sealing filler, thereby guarantee the leakproofness between valve rod 27 and the mount pad 3.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims

1. The utility model provides a but relief ball valve, includes disk seat, ball valve core (17) and valve rod (27), a serial communication port, the disk seat includes middle pedestal (1) and side pedestal (2), side pedestal (2) are provided with two to be located the both sides of middle pedestal (1), all be provided with lug (8) on middle pedestal (1) and side pedestal (2), and both pass through bolt fixed connection, be provided with mount pad (3) on middle pedestal (1), the one end of valve rod (27) is passed mount pad (3) and is dismantled with ball valve core (17), and the other end is provided with hand wheel (7), ball valve core (17) are located middle pedestal (1), be provided with movable seal cover (24) in side pedestal (2), have between movable seal cover (24) and side pedestal (2) spacing piece (4), and the one end of movable seal cover (24) is contradicted with ball valve core (17), be provided with flow through-hole (20) on ball valve core (17), and ball valve core (17) one end is passed through mount pad (3) and is connected with ball valve core (17) can be dismantled, the other end is provided with hand wheel (7), ball valve core (24) is provided with pressure release hole (22) in two axis (25), an adjusting piece (5) for controlling the movable sealing piece (25) to move and enabling the pressure release hole (22) to be opened is arranged on the inner side of the valve rod (27).

2. The pressure-relieving ball valve according to claim 1, wherein the movable sealing member (25) comprises a first limit bolt (23), a first spring (10) and nuts (21), mounting holes (19) are formed in two sides of the ball valve core (17) corresponding to the pressure-relieving holes (22), the diameter of the end part of the first limit bolt (23) is larger than that of the pressure-relieving holes (22) and smaller than that of the mounting holes (19), the nuts (21) are in threaded connection with the first limit bolt (23), and the first spring (10) is sleeved on the first limit bolt (23) and applies acting force for blocking the pressure-relieving holes (22) to the first limit bolt (23).

3. The pressure-relieving ball valve according to claim 2, wherein the adjusting member (5) comprises a movable rod (12), a headless screw (11) and a second spring (26), the movable rod (12) is of a stepped shaft structure, one end with a large diameter is close to the hand wheel (7), one end with a small diameter penetrates through the valve rod (27) and extends into the ball valve core (17), the second spring (26) is sleeved on the movable rod (12), two ends of the second spring are respectively abutted against the movable rod (12) and the valve rod (27), the headless screw (11) is in threaded connection with the valve rod (27), and one end of the movable rod (12) is provided with an inclined surface (13) abutted against the first limit bolt (23).

4. The pressure-relieving ball valve according to claim 1, wherein the limiting piece (4) comprises a second limiting bolt (9) and a third spring (15), one end of the second limiting bolt (9) penetrates through the movable sealing sleeve (24) and is fixedly connected with the side seat body (2), the third spring (15) is sleeved on the second limiting bolt (9), and two ends of the third spring respectively abut against the side seat body (2) and the movable sealing sleeve (24).

5. The pressure-relieving ball valve according to claim 1, wherein the middle seat body (1) is provided with a sealing frustum (18), and the side seat body (2) is provided with a groove (16) matched with the sealing frustum (18).

6. The pressure-relieving ball valve according to claim 1, wherein a cavity is arranged in the mounting seat (3), sealing filler is filled in the cavity, a sealing cover (6) is arranged on the mounting seat (3), and a protrusion (14) matched with the cavity is arranged on the sealing cover (6).