CN114776829A

CN114776829A - Ball valve with automatic compensation sealing function

Info

Publication number: CN114776829A
Application number: CN202210567151.XA
Authority: CN
Inventors: 李军辉; 滕楠; 滕新庭; 林虎; 滕慧琼; 周武
Original assignee: Kaisitong Valve Co ltd
Current assignee: Kaisitong Valve Co ltd
Priority date: 2022-05-23
Filing date: 2022-05-23
Publication date: 2022-07-22
Anticipated expiration: 2042-05-23
Also published as: CN114776829B

Abstract

The invention provides a ball valve with automatic compensation sealing function, which relates to the field of ball valves and comprises: the sealing device comprises a valve shell, wherein two spherical valve bodies are rotatably connected in the valve shell, sealing gaskets are respectively and slidably connected in the middle of the left side and the right side of each spherical valve body, spring pieces are arranged between the left inner side wall and the sealing gaskets, a transmission gear is rotatably connected in the middle of the top of the valve shell, the top of the transmission gear is connected with a driving worm, a sealing block is inserted in the end surface of the top of the valve shell, a sealing buckle plate is arranged in the middle of the front side wall of the valve shell, the two spherical valve bodies are arranged in the valve shell, when the sealing gaskets on the two sides of one spherical valve body are not enough, a pipeline can be blocked by the sealing gaskets on the two sides of the other spherical valve body, the sealing performance after the pipeline is blocked can be ensured by double guarantee, the use effect of the ball valve is ensured, the pipeline ball valve is reduced, the service life of the ball valve is prolonged, the problem that a single ball valve body is easy to wear is solved, and the sealing gaskets can not be replaced, the sealing property is deteriorated.

Description

Ball valve with automatic compensation sealing function

Technical Field

The invention relates to the technical field of ball valves, in particular to a ball valve with an automatic compensation sealing function.

Background

The ball valve is mainly used for cutting off or connecting media in a pipeline and can also be used for regulating and controlling fluid, along with rapid development of scientific technology and continuous improvement of production technology and product structure, the use of the ball valve is continuously increased year by year, and along with abrasion of a ball head inside the ball valve, a sealing ring is required to be automatically close to the ball head so as to compensate the sealing property.

However, as for the present ball valve that has the automatic compensation sealing function, because traditional ball valve only is provided with a spherical valve body, when the wearing and tearing of spherical valve body are comparatively serious and the seal ring of spherical valve body both sides is ageing, the inside leakproofness of ball valve will go wrong to as for the inside leakproofness disappearance of ball valve, it is poor to cause the ball valve to block the effect, the problem that the medium easily leaks, and because the ball valve is in encapsulated situation, can't change seal ring, so that need change the ball valve, it will cause cost to rise to change the ball valve wholly.

Disclosure of Invention

In view of this, the invention provides a ball valve with an automatic compensation sealing function, which is characterized in that two spherical valve bodies are arranged in a valve housing, when sealing gaskets on two sides of one spherical valve body are insufficient, a pipeline is blocked by the sealing gaskets on two sides of the other spherical valve body, and the sealing performance after the pipeline is blocked can be ensured through double guarantee, so that the using effect of the ball valve is ensured, the replacement of the pipeline ball valve is reduced, the service life of the ball valve is prolonged, the sealing gaskets can be tightly attached to the side walls of the spherical valve bodies through a supporting spring A between the two sealing gaskets, so that the sealing performance when the two spherical valve bodies are closed is ensured, the cover plate can be opened through a fixing bolt, the sealing gaskets and the supporting spring A between the two spherical valve bodies can be replaced by taking out the sealing blocks, and the sealing performance of the ball valve is restored.

The invention provides a purpose and an effect of a ball valve with an automatic compensation sealing function, which specifically comprise the following steps: the valve casing, the inside rotation of valve casing is connected with two spherical valve bodies, and the equal sliding connection of department has seal ring in the middle of the spherical valve body left and right sides, is provided with the spring leaf between two inside walls and the seal ring about the valve casing, and department rotates in the middle of the valve casing top and is connected with drive gear, and the drive gear top is connected with the drive worm, and it has sealed piece to peg graft in the valve casing top end face, and department is provided with sealed buckle in the middle of the preceding lateral wall of valve casing, and department articulates in the middle of the valve casing bottom inside wall turns over the board, turns over the middle department of board bottom and is provided with the backup pad.

Further, department has seted up the sealing washer access hole in the middle of the top end surface of valve casing, and sealing washer access hole bottom is linked together with the inside route of valve casing, and department is provided with the sealing washer in the middle of the preceding lateral wall of valve casing and changes the mouth, and the sealing washer is changed mouthful rear end and is linked together with the inside route of valve casing, and the sealing washer is changed mouthful and is linked together with the sealing washer access hole, and valve casing top eminence is provided with the axle shell.

Furthermore, a drainage pressure relief opening is formed in the bottom of the valve casing, a magnetic sealing plate is connected to the rear side wall of the drainage pressure relief opening in a sliding mode, two turning plates are symmetrically arranged at the top of the drainage pressure relief opening and at the connecting position of an internal passage of the valve casing, and a supporting plate is arranged at the bottom of the closed position of the two turning plates.

Furthermore, four corner departments in backup pad bottom are provided with the guide bar, and guide bar sliding connection is on the inside bottom plate of drainage pressure release mouth, is provided with supporting spring B between backup pad bottom terminal surface and the bottom plate up end.

Furthermore, a supporting spring A is arranged in a gap between the two sealing gaskets between the spherical valve bodies, a sealing block is clamped in a sealing ring access hole at the tops of the sealing gaskets and the supporting spring A, and a cover plate at the top of the sealing block is fixed in the end face of the top of the valve shell through a fixing bolt.

Furthermore, a sealing buckle plate is arranged at the front ends of the sealing washer replacing openings on the front sides of the sealing washer and the supporting spring A through a fixing bolt.

Furthermore, the spherical valve body symmetry is provided with two, and the top of spherical valve body is provided with driven gear, and driven gear rotates to be connected inside the axle housing, and the spherical valve body bottom is provided with the pivot, has seted up the wire casing in the pivot, is provided with the stay cord in the wire casing, and stay cord one end is passed supporting spring B from the bottom plate bottom and is connected department in the middle of the terminal surface of backup pad bottom.

Furthermore, a transmission gear is rotatably connected in the middle of the top of the shaft column shell, the left side and the right side of the transmission gear are in meshed connection with a driven gear on the top of the spherical valve body, a transmission worm wheel is arranged on the top of the transmission gear and in meshed connection with a driving worm, and a hand wheel is arranged at the rear end of the driving worm.

Advantageous effects

According to the automatic compensation sealing ball valve disclosed by the embodiments of the invention, the two spherical valve bodies are arranged in the valve shell, so that when the sealing gaskets on the two sides of one spherical valve body are insufficient in sealing, a pipeline can be blocked by the sealing gaskets on the two sides of the other spherical valve body, and the sealing performance after the pipeline is blocked can be ensured through double guarantee, so that the using effect of the ball valve is ensured, the replacement of the pipeline ball valve is reduced, and the service life of the ball valve is prolonged.

In addition, the sealing gaskets can be tightly attached to the side walls of the spherical valve bodies through the supporting spring A between the two sealing gaskets, so that the sealing performance when the two spherical valve bodies are closed is ensured, the stay cord is wound in the wire grooves of the rotating shaft through the rotation of the two spherical valve bodies, the supporting plate is conveniently pulled to slide downwards when the spherical valve bodies are closed, so that the two turning plates are opened through the sliding of the supporting plate, when the sealing performance of the sealing gaskets is poor, a medium can flow into the drainage pressure relief opening through the turning plates, whether the medium is left in the drainage pressure relief opening can be checked by pulling out the magnetic sealing plates, the sealing performance of the sealing gaskets is conveniently observed, so that the sealing gaskets can be timely replaced, then the cover plate can be opened through the fixing bolt, the sealing blocks are taken out, and the sealing gaskets and the supporting spring A between the two spherical valve bodies can be replaced, in order to restore the tightness of the ball valve.

In addition, drive the drive worm through the hand wheel and rotate, the drive worm drives drive gear through being connected with the meshing of transmission worm wheel and rotates, driven gear through drive gear drive two ball valve body tops rotates, so that two ball valve bodies of simultaneous control rotate, open and close when realizing ball valve body, can carry out dual control to blocking of pipeline through two ball valve bodies, so that better improvement leakproofness, and through fixing bolt alright demolish sealed buckle, alright change the sealing washer of reserve in the mouth and support spring A push away between two ball valve bodies, conveniently change seal washer and support spring A, be convenient for improve seal washer and support spring A to the leakproofness between ball valve body and the valve casing.

In addition, seal drainage pressure release mouth through the magnetism shrouding, so as to prevent that the ball valve from medium leakage when opening, improve the ball valve leakproofness, then the medium is when normally circulating, two turn over the board and block up drainage pressure release mouth top under the effect of backup pad, prevent that the medium from leaking from drainage pressure release mouth, when the ball valve is closed needs to be changed seal ring, through opening the magnetism shrouding, discharge the medium in the valve casing, be convenient for improve the convenience of seal ring change between two spherical valve bodies, more can be with the pressure escape in the valve casing, so as to improve the convenience of valve casing internal maintenance.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly described below.

The drawings in the following description relate to some embodiments of the invention only and are not intended to limit the invention.

In the drawings:

FIG. 1 is a schematic drawing of an integrally disassembled left front side axial view of a self-compensating sealed ball valve according to an embodiment of the present invention.

FIG. 2 is an integrally disassembled right rear side axial view structural schematic diagram of an automatic compensation sealing ball valve of an embodiment of the invention.

Fig. 3 is a schematic left-side axial view of an automatic compensation sealing ball valve according to an embodiment of the invention.

Fig. 4 is a sectional left front side axial view structural diagram of a valve casing of the automatic compensation sealing ball valve according to the embodiment of the invention.

Fig. 5 is a sectional right front side axial view structural diagram of a valve casing of the automatic compensation sealing ball valve according to the embodiment of the invention.

Fig. 6 is a schematic view of a transmission connection structure between the top of the spherical valve body of the automatic compensation sealing ball valve and the transmission gear according to the embodiment of the invention.

Fig. 7 is a rear right side bottom view schematic diagram of the automatic compensation sealing ball valve according to the embodiment of the invention.

Fig. 8 is a sectional view of the valve housing of the self-compensating sealing ball valve according to the embodiment of the present invention.

List of reference numerals

1. A valve housing; 101. a seal ring access hole; 102. a drainage pressure relief port; 10201. a base plate; 103. a seal ring replacement port; 104. a column housing; 2. a sealing gasket; 3. a spring plate; 4. a spherical valve body; 401. a rotating shaft; 402. pulling a rope; 403. a driven gear; 5. a transmission gear; 501. a drive worm gear; 6. driving the worm; 601. a hand wheel; 7. a support spring A; 8. a sealing block; 9. a cover plate; 10. fixing the bolt; 11. turning over a plate; 12. a support plate; 1201. a guide bar; 13. a support spring B; 14. a magnetic closing plate; 15. and (4) sealing the pinch plate.

Detailed Description

In order to make the objects, aspects and advantages of the embodiments of the present invention more apparent, the embodiments of the present invention will be described in detail with reference to the accompanying drawings. Unless otherwise indicated, terms used herein have the ordinary meaning in the art. Like reference symbols in the various drawings indicate like elements.

The embodiment is as follows: please refer to fig. 1 to 8:

the invention provides a ball valve with an automatic compensation sealing function, which comprises a valve casing 1, wherein two spherical valve bodies 4 are rotatably connected in the valve casing 1, sealing gaskets 2 are respectively and slidably connected in the middles of the left side and the right side of each spherical valve body 4, spring pieces 3 are arranged between the left inner side wall and the right inner side wall of the valve casing 1 and the sealing gaskets 2, a transmission gear 5 is rotatably connected in the middle of the top of the valve casing 1, the top of the transmission gear 5 is connected with a driving worm 6, a sealing block 8 is inserted in the end surface of the top of the valve casing 1, a sealing buckle plate 15 is arranged in the middle of the front side wall of the valve casing 1, a turning plate 11 is hinged in the middle of the bottom inner side wall of the valve casing 1, a support plate 12 is arranged in the middle of the bottom of the turning plate 11, and the specific function is that when the sealing gaskets 2 on two sides of one spherical valve body 4 are insufficient, the pipelines can be blocked by the sealing gaskets 2 on two sides of the other spherical valve body 4, through dual guarantee, alright guarantee the leakproofness after the pipeline blocks to guarantee the result of use of ball valve, reduce the change of pipeline ball valve, prolong the life of ball valve.

Wherein, a supporting spring A7 is arranged in the gap between two sealing gaskets 2 between the spherical valve bodies 4, a sealing block 8 is clamped in a sealing ring overhauling port 101 at the top of the sealing gaskets 2 and the supporting spring A7, a sealing buckle plate 15 is arranged at the front end of a sealing ring replacing port 103 at the front sides of the sealing gaskets 2 and the supporting spring A7 through a fixing bolt 10, a cover plate 9 at the top of the sealing block 8 is fixed in the end surface of the top of the valve casing 1 through the fixing bolt 10, two spherical valve bodies 4 are symmetrically arranged, a driven gear 403 is arranged at the top of the spherical valve body 4, the driven gear 403 is rotatably connected inside a shaft column casing 104, a rotating shaft 401 is arranged at the bottom of the spherical valve body 4, a wire groove is arranged in the rotating shaft 401, a pulling rope 402 is arranged in the wire groove, one end of the pulling rope 402 penetrates through the supporting spring B13 from the bottom of a bottom plate 10201 to be connected at the middle of the end surface of the bottom of the supporting plate 12, the concrete function is that the sealing gaskets 2 can lead the sealing gaskets 2 to be closely attached to the side wall of the spherical valve body 4 through the supporting spring A7 between the two sealing gaskets 2, so as to guarantee the leakproofness when two spherical valve bodies 4 close, the rotation through two spherical valve bodies 4 twines stay cord 402 in the wire casing of pivot 401, conveniently stimulate backup pad 12 lapse when spherical valve body 4 closes, so that the gliding through backup pad 12 opens two board 11 that turn over, when seal ring 2 leakproofness is not good, the medium just can flow to drainage pressure release mouth 102 through turning over board 11, through taking out magnetism shrouding 14, alright inspect whether the medium persists in drainage pressure release mouth 102, conveniently observe seal ring 2's leakproofness, so that in time seal ring 2 changes, then through fixing bolt 10 alright open apron 9, and take out seal block 8, alright change seal ring 2 and supporting spring A7 between two spherical valve bodies 4, so that improve the leakproofness of ball valve.

Wherein, the middle part of the top end surface of the valve casing 1 is provided with a sealing ring access hole 101, the bottom of the sealing ring access hole 101 is communicated with an internal passage of the valve casing 1, the middle part of the front side wall of the valve casing 1 is provided with a sealing ring replacing hole 103, the rear end of the sealing ring replacing hole 103 is communicated with the internal passage of the valve casing 1, the sealing ring replacing hole 103 is communicated with the sealing ring access hole 101, the high part of the top of the valve casing 1 is provided with a shaft column casing 104, the middle part of the top of the shaft column casing 104 is internally and rotatably connected with a transmission gear 5, the left side and the right side of the transmission gear 5 are meshed and connected with a driven gear 403 at the top of a spherical valve body 4, the top of the transmission gear 5 is provided with a transmission worm wheel 501, the transmission worm wheel 501 is meshed and connected with a driving worm 6, the rear end of the driving worm 6 is provided with a hand wheel 601, the specific function is that the driving worm 6 is driven to rotate by the hand wheel 601, the driving worm 6 is meshed and connected with the transmission gear 5 to rotate by the transmission worm wheel 501, drive the driven gear 403 rotation at two spherical valve body 4 tops through drive gear 5, so that two spherical valve body 4 of simultaneous control rotate, open and close when realizing spherical valve body 4, can carry out dual control to blocking of pipeline through two spherical valve body 4, so that better improvement leakproofness, and through fixing bolt 10 alright demolish sealed buckle 15, alright change sealing washer 2 and supporting spring A7 spare in the mouth 103 with the sealing washer and push away between two spherical valve body 4, conveniently change sealing washer 2 and supporting spring A7, be convenient for improve sealing washer 2 and supporting spring A7 to the leakproofness between spherical valve body 4 and valve casing 1.

Wherein, the bottom of the valve casing 1 is provided with a drainage pressure relief opening 102, a magnetic closing plate 14 is connected in the rear side wall of the drainage pressure relief opening 102 in a sliding way, two turning plates 11 are symmetrically arranged at the joint of the top of the drainage pressure relief opening 102 and the internal passage of the valve casing 1, a supporting plate 12 is arranged at the bottom of the closed part of the two turning plates 11, the drainage pressure relief opening 102 is sealed through the magnetic closing plate 14, so as to prevent medium leakage when the ball valve is opened, improve the sealing performance of the ball valve, then when the medium normally circulates, the two turning plates 11 block the top of the drainage pressure relief opening 102 under the action of the supporting plate 12, prevent the medium from leaking from the drainage pressure relief opening 102, when the ball valve is closed and the sealing washer 2 needs to be replaced, the medium in the valve casing 1 is discharged by opening the magnetic closing plate 14, so as to improve the convenience of replacing the sealing washer 2 between the two spherical valve bodies 4, and further discharge the pressure in the valve casing 1, in order to improve the ease of maintenance inside the valve housing 1.

Wherein, four corners department in backup pad 12 bottom is provided with guide bar 1201, guide bar 1201 sliding connection is on the inside bottom plate 10201 of drainage pressure release mouth 102, be provided with supporting spring B13 between backup pad 12 bottom terminal surface and the bottom plate 10201 up end, concrete function, prop backup pad 12 through supporting spring B13, then will turn over board 11 through backup pad 12, thereby prevent to turn over board 11 and open under the effect of medium pressure, thereby when improving the ball valve and opening, the circulation speed of medium, backup pad 12 passes through guide bar 1201 sliding connection in bottom plate 10201, be convenient for guarantee the steady up-and-down slip of backup pad 12, thereby guarantee backup pad 12 and provide sufficient holding power for turning over board 11.

The specific use mode and function of the embodiment are as follows: in the invention, a hand wheel 601 drives a driving worm 6 to rotate, the driving worm 6 drives a transmission gear 5 to rotate through meshing connection with a transmission worm wheel 501, the transmission gear 5 drives driven gears 403 at the tops of two spherical valve bodies 4 to rotate so as to simultaneously control the two spherical valve bodies 4 to rotate, the spherical valve bodies 4 are opened and closed simultaneously, a support plate 12 is supported by a support spring B13, then a turning plate 11 is supported by the support plate 12, the turning plate 11 is prevented from being opened under the action of medium pressure, the medium flowing speed is increased when the ball valve is opened, the pipeline blocking can be doubly controlled by the two spherical valve bodies 4 so as to better improve the sealing property, when a sealing gasket 2 and a support spring A7 need to be overhauled, the spherical valve bodies 4 are closed, and a pull rope 402 is wound in a wire groove of a rotating shaft 401 through the rotation of the two spherical valve bodies 4, the support plate 12 is conveniently pulled to slide downwards while the spherical valve body 4 is closed, so that the two turning plates 11 are opened through the downward sliding of the support plate 12, then the magnetic closing plate 14 is drawn out to discharge the medium in the valve casing 1, which is convenient for improving the convenience of replacing the sealing washer 2 between the two spherical valve bodies 4, and can discharge the pressure in the valve casing 1, so as to improve the convenience of the internal maintenance of the valve casing 1, then the cover plate 9 can be opened by fixing the bolt 10, and the sealing block 8 can be taken out, so that the sealing gasket 2 and the supporting spring A7 between the two spherical valve bodies 4 can be taken out, and through fixing bolt 10 alright dismantle sealed buckle 15, alright with reserve seal ring 2 and supporting spring A7 in the seal ring change mouth 103 push to between two spherical valve bodies 4, conveniently change seal ring 2 and supporting spring A7, be convenient for improve seal ring 2 and supporting spring A7 to the leakproofness between spherical valve body 4 and the valve casing 1.

Finally, it should be noted that, when describing the positions of the components and the matching relationship between the components, the invention will be generally exemplified by one/a pair of components, however, it should be understood by those skilled in the art that such positions, matching relationship, etc. are also applicable to other components/other pairs of components.

The above description is intended to be illustrative of the present invention and is not intended to limit the scope of the invention, which is defined by the appended claims.

Claims

1. A ball valve having an automatic compensation sealing function, comprising: valve casing (1), valve casing (1) inside rotation is connected with two spherical valve body (4), the equal sliding connection of department has seal ring (2) in the middle of the spherical valve body (4) left and right sides, be provided with spring leaf (3) between two inside walls and seal ring (2) about valve casing (1), department rotates in the middle of valve casing (1) top and is connected with drive gear (5), drive gear (5) top is connected with drive worm (6), it has sealed piece (8) to peg graft in valve casing (1) top end face, department is provided with sealed buckle (15) in the middle of valve casing (1) preceding side wall, department articulates in the middle of valve casing (1) bottom inside wall has and turns over board (11), it is provided with backup pad (12) to turn over board (11) bottom middle department.

2. A ball valve having an automatic compensation sealing function according to claim 1, wherein: department has seted up sealing washer access hole (101) in the middle of the top end surface of valve casing (1), and sealing washer access hole (101) bottom is linked together with the internal passage of valve casing (1), and valve casing (1) preceding lateral wall middle department is provided with sealing washer and changes mouth (103), and sealing washer is changed mouth (103) rear end and is linked together with the internal passage of valve casing (1), and sealing washer is changed mouth (103) and is linked together with sealing washer access hole (101), and valve casing (1) top eminence is provided with axle column shell (104).

3. A ball valve having an automatic compensation sealing function according to claim 1, wherein: the drainage pressure relief opening (102) is formed in the bottom of the valve casing (1), the magnetic sealing plate (14) is connected to the rear side wall of the drainage pressure relief opening (102) in a sliding mode, two turning plates (11) are symmetrically arranged at the connecting position of the top of the drainage pressure relief opening (102) and an internal passage of the valve casing (1), and a supporting plate (12) is arranged at the bottom of the closed position of the two turning plates (11).

4. A ball valve having an automatic compensation sealing function according to claim 1, wherein: four corner departments in backup pad (12) bottom are provided with guide bar (1201), and guide bar (1201) sliding connection is on inside bottom plate (10201) of drainage pressure release mouth (102), is provided with supporting spring B (13) between backup pad (12) bottom terminal surface and bottom plate (10201) up end.

5. A ball valve having an automatic compensation sealing function according to claim 1, wherein: be provided with supporting spring A (7) in the clearance of two seal ring (2) between spherical valve body (4), joint has sealed piece (8) in seal ring access hole (101) at seal ring (2) and supporting spring A (7) top, and apron (9) at sealed piece (8) top are fixed in valve casing (1) top end face through fixing bolt (10).

6. A ball valve having an automatic compensation sealing function according to claim 1, wherein: and a sealing buckle plate (15) is arranged at the front ends of the sealing ring replacing openings (103) on the front sides of the sealing washer (2) and the supporting spring A (7) through a fixing bolt (10).

7. A ball valve having an automatic compensation sealing function according to claim 1, wherein: spherical valve body (4) symmetry is provided with two, and the top of spherical valve body (4) is provided with driven gear (403), and driven gear (403) rotate to be connected inside shaft column shell (104), and spherical valve body (4) bottom is provided with pivot (401), has seted up the wire casing in pivot (401), is provided with stay cord (402) in the wire casing, and stay cord (402) one end is passed supporting spring B (13) from bottom plate (10201) bottom and is connected in the middle of backup pad (12) bottom terminal surface.

8. A ball valve having an automatic compensation sealing function according to claim 2, wherein: the inner part of the middle of the top of the shaft column shell (104) is rotatably connected with a transmission gear (5), the left side and the right side of the transmission gear (5) are meshed with a driven gear (403) at the top of the spherical valve body (4), a transmission worm wheel (501) is arranged at the top of the transmission gear (5), the transmission worm wheel (501) is meshed with a driving worm (6), and a hand wheel (601) is arranged at the rear end of the driving worm (6).