CN221145378U

CN221145378U - Low-temperature pneumatic ball valve

Info

Publication number: CN221145378U
Application number: CN202323224705.5U
Authority: CN
Inventors: 马高才; 潘锦远; 廖道钗; 朱建林; 林远李
Original assignee: Yongjia Zhengding Machinery Manufacturing Co ltd
Current assignee: Yongjia Zhengding Machinery Manufacturing Co ltd
Priority date: 2023-11-28
Filing date: 2023-11-28
Publication date: 2024-06-14
Anticipated expiration: 2033-11-28

Abstract

The utility model belongs to the technical field of pneumatic ball valves, in particular to a low-temperature pneumatic ball valve which comprises a valve seat, wherein transverse pipes are symmetrically arranged on two sides of the valve seat, vertical pipes are arranged on the top side of the valve seat, two groups of grooves are symmetrically formed in the inner wall of the valve seat, an air bag is assembled in the grooves, the air bag is of a semi-arc structure, a connecting pipe is arranged on the air bag, an air tap is arranged on the connecting pipe, a valve rod is rotatably arranged on the rod seat through a bearing, the valve rod penetrates through the top end of a rubber ring, a ball body is welded on the bottom side of the valve rod, a rotating rod is welded on the bottom side of the ball body, a rubber ring is arranged between the ball body and the valve seat, sealing is realized through self elastic force, the air bag is arranged between the rubber ring and the valve seat, and the air bag is inflated into the air bag, so that the pressing force between the rubber ring and the ball body is increased, the sealing force is increased, the ball valve is prevented from leaking, and the sealing property of the ball valve is beneficial to improvement.

Description

Low-temperature pneumatic ball valve

Technical Field

The utility model relates to the technical field of pneumatic ball valves, in particular to a low-temperature pneumatic ball valve.

Background

The pneumatic ball valve is characterized in that the valve is unblocked or blocked by rotating the valve core, the pneumatic ball valve is light in switch, small in size, capable of being made into a large caliber, simple in structure and convenient to maintain, and the pneumatic ball valve is required to be used when the flow direction of a medium is required to be cut off, distributed and changed in a pipeline.

One Chinese patent with the publication number of CN217539689U discloses a large-caliber low-temperature pneumatic ball valve, which comprises a pneumatic ball valve body, wherein a valve rod is movably arranged at the top of the pneumatic ball valve body, a support frame is arranged at the outer side of the valve rod, the support frame is welded with the surface of the pneumatic ball valve body, and a pneumatic actuator is detachably arranged at the top of the support frame; the spout has all been seted up at the both ends of support frame, and equal swing joint has the slider in two spouts, makes the valve rod rotate through the drive worm, and then can open and close pneumatic ball valve body when pneumatic actuator damages, and worm wheel break away from when normal use, and then worm and worm wheel do not influence normal pneumatic actuator drive valve rod and rotate, and then improve the practicality of heavy-calibre low temperature pneumatic ball valve.

The existing pneumatic ball valve is sealed by only pre-pressing the ball lining, and in the process of using the pneumatic ball valve in a low-temperature environment for a long time, friction loss is generated between the ball body and the ball lining, the phenomenon of leakage caused by insufficient sealing force due to the reduction of the pressing allowance is caused, so that the sealing performance of the pneumatic ball valve is reduced, and a large amount of materials are wasted; therefore, a low-temperature pneumatic ball valve is proposed to address the above-described problems.

Disclosure of utility model

In order to make up the defects of the prior art and solve the problems existing in the prior art, the utility model provides a low-temperature pneumatic ball valve.

The technical scheme adopted for solving the technical problems is as follows: the utility model relates to a low-temperature pneumatic ball valve, which comprises a valve seat, wherein transverse pipes are symmetrically arranged on two sides of the valve seat, a vertical pipe is arranged on the top side of the valve seat, two groups of grooves are symmetrically arranged on the inner wall of the valve seat, an air bag is assembled in the grooves, the air bag is of a semi-arc structure, a connecting pipe is arranged on the air bag, the connecting pipe penetrates through the valve seat and extends to the outer side of the valve seat, an air tap is arranged on the connecting pipe, a valve is arranged in the air tap, rubber rings are jointly arranged on the two groups of air bags, a rod seat is welded on the valve seat, a valve rod is rotatably arranged on the rod seat through a bearing, the valve rod penetrates through the top end of the rubber ring, and a ball body is welded on the bottom side of the valve rod, the ball valve is characterized in that a rotating rod is welded at the bottom side of the ball body, the rotating rod penetrates through the bottom end of the rubber ring and the bottom end of the rotating rod is rotationally connected with the inner wall of the valve seat through a bearing, a through hole is formed in the ball body, sealing filler is arranged between the inner wall of the vertical pipe and the valve rod, sealing is achieved through the rubber ring arranged between the ball body and the valve seat, an air bag is arranged between the rubber ring and the valve seat, the air bag is inflated into the air bag through an air tap, the air bag extrudes the rubber ring, the compression force between the rubber ring and the ball body is increased, sealing force is increased, leakage of the ball valve is avoided, and the sealing performance of the ball valve is improved.

Preferably, the support frame is fixedly installed on the periphery of the vertical pipe, the box body is installed on the support frame, the bottom side of the box body is fixedly connected with the top side of the vertical pipe, the valve rod penetrates through the bottom plate of the box body and the top end of the valve rod is rotationally connected with the top plate of the box body through a bearing, a gear is fixedly sleeved on the valve rod, the gear is assembled inside the box body, a sliding groove is formed in the inner wall of the box body, a sliding block is assembled in the sliding groove, a rack is welded on the sliding block, the rack is meshed with the gear, a cylinder is fixedly installed on the inner wall of the box body, a telescopic rod is connected with one side of the rack and fixedly connected with the telescopic rod, the telescopic rod is driven to move through the operation of the cylinder, the telescopic rod pushes the rack to horizontally move, the gear is pushed to rotate by the rack, the valve rod is driven by the gear to rotate, the ball body is driven by the ball body to rotate, the ball body is enabled to stably rotate, the ball body rotates in the direction, the through hole on the ball valve is driven to rotate in the direction, the opening and closing of the inner channel of the ball valve is realized, and the opening efficiency is improved.

The utility model has the advantages that:

1. According to the ball valve, the rubber ring is arranged between the ball body and the valve seat, sealing is achieved through the elastic force of the rubber ring, the air bag is arranged between the rubber ring and the valve seat, the air bag is inflated into the air bag through the air nozzle, the air bag extrudes the rubber ring, the pressing force between the rubber ring and the ball body is increased, and therefore sealing force is increased, leakage of the ball valve is avoided, and sealing performance of the ball valve is improved.

2. According to the utility model, the telescopic rod on the telescopic rod is driven to move through the operation of the air cylinder, the telescopic rod pushes the rack to horizontally move, the rack pushes the gear to rotate, the gear drives the valve rod to rotate, the valve rod drives the ball body to rotate, the ball body drives the rotating rod to rotate, so that the ball body stably rotates, the ball body rotates in the direction to drive the through hole on the ball body to rotate in the direction, the opening and closing of the internal channel of the ball valve are realized, and the opening efficiency of the ball valve is improved.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that other drawings can be obtained from these drawings without inventive faculty for a person skilled in the art.

FIG. 1 is a schematic perspective view of a first view;

FIG. 2 is a schematic side view in cross-section and in perspective;

FIG. 3 is a schematic perspective view in front section;

fig. 4 is a schematic view of the internal structure of the case.

In the figure: 1. a valve seat; 2. a transverse tube; 3. a standpipe; 4. a groove; 5. an air bag; 6. a connecting pipe; 7. an air tap; 8. a rubber ring; 9. a rod seat; 10. a valve stem; 11. a sphere; 12. a rotating lever; 13. a through hole; 14. sealing filler; 15. a support frame; 16. a case; 17. a gear; 18. a chute; 19. a slide block; 20. a rack; 21. a cylinder; 22. a telescopic 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.

Referring to fig. 1-4, a low temperature pneumatic ball valve comprises a valve seat 1, two lateral pipes 2 are symmetrically arranged on two sides of the valve seat 1, a vertical pipe 3 is arranged on the top side of the valve seat 1, two groups of grooves 4 are symmetrically arranged on the inner wall of the valve seat 1, an air bag 5 is arranged in the grooves 4, the air bag 5 is of a semi-arc structure, a connecting pipe 6 is arranged on the air bag 5, the connecting pipe 6 penetrates through the valve seat 1 and extends to the outer side of the valve seat 1, an air tap 7 is arranged on the connecting pipe 6, a valve is arranged in the air tap 7, a rubber ring 8 is jointly arranged on the two groups of air bags 5, a rod seat 9 is welded on the valve seat 1, a valve rod 10 is rotatably arranged on the rod seat 9 through a bearing, the valve rod 10 penetrates through the top end of the rubber ring 8, a ball 11 is welded on the bottom side of the valve rod 10, a rotating rod 12 is welded on the bottom side of the ball 11, the rotating rod 12 penetrates through the bottom end of the rubber ring 8 and the bottom end of the rotating rod is rotatably connected with the inner wall of the valve seat 1 through the bearing, the ball 11 is provided with a through hole 13, a sealing filler 14 is arranged between the inner wall of the vertical pipe 3 and the valve rod 10, a supporting frame 15 is fixedly arranged on the periphery of the vertical pipe 3, a box 16 is arranged on the supporting frame 15, the bottom side of the box 16 is fixedly connected with the top side of the vertical pipe 3, the valve rod 10 penetrates through the bottom plate of the box 16, the top end of the valve rod is rotatably connected with the top plate of the box 16 through a bearing, the valve rod 10 is fixedly sleeved with a gear 17, the gear 17 is assembled inside the box 16, a chute 18 is arranged on the inner wall of the box 16, a sliding block 19 is assembled in the chute 18, a rack 20 is welded on the sliding block 19, the rack 20 is meshed with the gear 17, a cylinder 21 is fixedly arranged on the inner wall of the box 16, a telescopic rod 22 is connected with one side of the rack 20; when the pneumatic ball valve is in operation, the sealing of the existing pneumatic ball valve is realized by pre-compression of a ball lining, in the process of long-term use of the pneumatic ball valve in a low-temperature environment, friction loss is generated between the rotation of the ball 11 and the ball lining, the phenomenon of leakage caused by insufficient sealing force due to reduction of compression allowance is caused, the sealing performance of the pneumatic ball valve is reduced, a large amount of materials are wasted, the telescopic rod 22 on the pneumatic ball valve is driven to move through the operation of the air cylinder 21, the telescopic rod 22 pushes the rack 20 to move horizontally, the sliding block 19 on the rack 20 slides in the sliding block 19, so that the rack 20 moves stably, the rack 20 pushes the gear 17 to rotate, the gear 17 drives the valve rod 10 to rotate, the valve rod 10 drives the ball 11 to rotate, the ball 11 drives the rotating rod 12 to rotate stably, the rotation direction of the ball 11 drives the through hole 13 on the ball to rotate in the direction, and the opening and closing of a channel inside the ball valve is realized; set up rubber ring 8 between spheroid 11 and disk seat 1, rubber ring 8 has realized sealedly through self elastic force, in-process that uses for a long time under low temperature environment, rubber material can become hard and brittle, lose original elasticity and leakproofness, spheroid 11 rotates simultaneously and rubber ring 8 can produce friction loss, and then rubber ring 8 compress tightly the surplus and reduce and cause sealing force not enough, through installing gasbag 5 between rubber ring 8 and disk seat 1, aerify in to gasbag 5 through air cock 7, gasbag 5 extrudees rubber ring 8, increase rubber ring 8 and spheroid 11 between compressing tightly force, thereby increase sealing force, avoid the ball valve to take place the seepage phenomenon, be favorable to improving the leakproofness of ball valve.

The working principle is that the sealing of the existing pneumatic ball valve is realized by pre-pressing a ball lining, in the process of using the pneumatic ball valve in a low-temperature environment for a long time, the ball 11 rotates to generate friction loss with the ball lining, the pressing allowance is reduced to cause the phenomenon that the sealing force is insufficient to leak, the sealing performance of the pneumatic ball valve is reduced, a large amount of materials are wasted, the telescopic rod 22 on the pneumatic ball valve is driven to move through the operation of the air cylinder 21, the telescopic rod 22 pushes the rack 20 to horizontally move, the sliding block 19 on the rack 20 slides in the sliding block 19 to enable the rack 20 to stably move, the rack 20 pushes the gear 17 to rotate, the gear 17 drives the valve rod 10 to rotate, the valve rod 10 drives the ball 11 to rotate, the ball 11 drives the rotating rod 12 to rotate, the ball 11 stably rotates, the through hole 13 on the ball 11 rotates in the direction, and the opening and closing of the internal passage of the ball valve are realized; set up rubber ring 8 between spheroid 11 and disk seat 1, rubber ring 8 has realized sealedly through self elastic force, in-process that uses for a long time under low temperature environment, rubber material can become hard and brittle, lose original elasticity and leakproofness, spheroid 11 rotates simultaneously and rubber ring 8 can produce friction loss, and then rubber ring 8 compress tightly the surplus and reduce and cause sealing force not enough, through installing gasbag 5 between rubber ring 8 and disk seat 1, aerify in to gasbag 5 through air cock 7, gasbag 5 extrudees rubber ring 8, increase rubber ring 8 and spheroid 11 between compressing tightly force, thereby increase sealing force, avoid the ball valve to take place the seepage phenomenon, be favorable to improving the leakproofness of ball valve.

The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims.

Claims

1. The low-temperature pneumatic ball valve is characterized by comprising a valve seat (1), transverse pipes (2) are symmetrically arranged on two sides of the valve seat (1), vertical pipes (3) are arranged on the top side of the valve seat (1), two groups of grooves (4) are symmetrically formed in the inner wall of the valve seat (1), an air bag (5) is assembled in the grooves (4), the air bag (5) is of a semi-arc structure, a connecting pipe (6) is arranged on the air bag (5), the connecting pipe (6) penetrates through the valve seat (1) and extends to the outer side of the valve seat (1), an air nozzle (7) is arranged on the connecting pipe (6), a valve is arranged in the air nozzle (7), rubber rings (8) are jointly arranged on the two groups of air bags (5), a rod seat (9) is rotatably provided with a valve rod (10) through a bearing, the valve rod (10) penetrates through the top end of the rubber rings (8) and the bottom side of the rubber rod seat, a ball body (11) is welded on the bottom side of the ball body (11), a rotating rod (12) is welded on the bottom side of the ball body (11), and the rubber rod (12) penetrates through the bottom end of the rubber ring (8) and is connected with the inner wall of the valve seat (1).

2. The low temperature pneumatic ball valve of claim 1, wherein: the ball body (11) is provided with a through hole (13), and a sealing filler (14) is arranged between the inner wall of the vertical pipe (3) and the valve rod (10).

3. The low temperature pneumatic ball valve of claim 1, wherein: the vertical pipe (3) is fixedly provided with a supporting frame (15) on the periphery, the supporting frame (15) is provided with a box body (16), and the bottom side of the box body (16) is fixedly connected with the top side of the vertical pipe (3).

4. The low temperature pneumatic ball valve of claim 1, wherein: the valve rod (10) penetrates through the bottom plate of the box body (16) and the top end of the valve rod is rotatably connected with the top plate of the box body (16) through a bearing, a gear (17) is fixedly sleeved on the valve rod (10), and the gear (17) is assembled inside the box body (16).

5. A low temperature pneumatic ball valve as claimed in claim 3 wherein: a sliding groove (18) is formed in the inner wall of the box body (16), a sliding block (19) is assembled in the sliding groove (18), and a rack (20) is welded on the sliding block (19).

6. The low temperature pneumatic ball valve of claim 5, wherein: the rack (20) is meshed with the gear (17), an air cylinder (21) is fixedly arranged on the inner wall of the box body (16), a telescopic rod (22) is connected to the air cylinder (21), and the telescopic rod (22) is fixedly connected with one side of the rack (20).