CN110792799B

CN110792799B - Pneumatic track ball valve

Info

Publication number: CN110792799B
Application number: CN201911094303.3A
Authority: CN
Inventors: 李继伟; 韩子建; 李武; 李晓标
Original assignee: Zhejiang Weiheng Fluid Equipment Co ltd
Current assignee: Zhejiang Weiheng Fluid Equipment Co ltd
Priority date: 2019-11-11
Filing date: 2019-11-11
Publication date: 2021-06-29
Anticipated expiration: 2039-11-11
Also published as: CN110792799A

Abstract

The invention discloses a pneumatic track ball valve which comprises a pneumatic mechanism, a valve seat and a valve rod, wherein the bottom end of the valve rod is fixedly provided with a ball body through a connecting pin, the ball body comprises a hemisphere I and a hemisphere II, the end part of the hemisphere I is provided with a sealing gasket I, the side wall of the sealing gasket I is provided with a dovetail groove, and the end part of the hemisphere II is provided with a sealing gasket II. According to the invention, through the arrangement of the first hemisphere, the second hemisphere, the first sealing gasket and the second sealing gasket, the integrally formed sphere is split into the combined sphere, so that a buffer space is formed between the first hemisphere and the second hemisphere, the first hemisphere and the second hemisphere are seamlessly connected by utilizing the matched extrusion of the first sealing gasket and the second sealing gasket, and the combined sphere has elastic deformation potential energy, so that when water pressure impacts the sphere, not only can the pressure be resisted through the strength of the sphere, but also a part of impact force can be converted into the elastic deformation of the first sealing gasket and the second sealing gasket, the loss of the sphere is reduced, and the service life of the sphere is prolonged.

Description

Pneumatic track ball valve

Technical Field

The invention relates to the technical field of ball valves, in particular to a pneumatic track ball valve.

Background

The pneumatic ball valve is matched with a pneumatic actuator, the execution speed of the pneumatic actuator is relatively high, the fastest switching speed is 0.05 second/time, therefore, the pneumatic quick-cut ball valve is also called as a pneumatic quick-cut ball valve, and the pneumatic ball valve is usually provided with various accessories, such as an electromagnetic valve, an air source processing triplet, a limit switch, a positioner, a control box and the like, so as to realize local control and remote centralized control, the valve can be controlled to be opened and closed in the control room without going to the field or bringing about manual control at high altitude and danger, human resources, time and safety are saved to a great extent, when the ball valve is in a closed state, the ball body is subjected to larger water pressure and impact force, the ball body of the existing pneumatic ball valve is of an integrally formed structure, and the ball body can only resist pressure through the strength of the ball body in the using process, so that the loss of the ball body is large, and the service life of the ball body is shortened.

Disclosure of Invention

The invention aims to: the pneumatic track ball valve is provided for solving the problems of poor pressure resistance and easy loss of a ball body of the pneumatic track ball valve.

In order to achieve the purpose, the invention adopts the following technical scheme:

the pneumatic track ball valve comprises a pneumatic mechanism, a valve seat and a valve rod, wherein a ball body is fixedly arranged at the bottom end of the valve rod through a connecting pin, the ball body comprises a first hemisphere and a second hemisphere, a first sealing gasket is arranged at the end part of the first hemisphere, a dovetail groove is formed in the side wall of the first sealing gasket, a second sealing gasket is arranged at the end part of the second hemisphere, an integrally formed dovetail lug is arranged on the side wall of the second sealing gasket, the pneumatic mechanism comprises a shell cover and a shell, triangular limiting blocks are arranged on the top and bottom inner surface walls of the shell, a groove is formed in the shell cover, a limiting rod is rotatably connected inside the groove through a rotating shaft, a rotating block is fixedly arranged on the rotating shaft, a pin shaft is arranged on one side of the rotating block, the end part of the pin shaft penetrates through the inner surface wall of the shell cover, and a second torsion spring is rotatably connected below the limiting rod in the groove through a rotating shaft.

As a further description of the above technical solution:

the dovetail groove is connected with the dovetail lug in a clamping mode.

As a further description of the above technical solution:

and a connecting block is fixedly arranged on the inner spherical surface of the second hemisphere and close to the end part, the connecting block is rotatably connected with an arc-shaped fixing rod through a rotating shaft, and an integrally formed fixing hook is arranged on the arc-shaped fixing rod.

As a further description of the above technical solution:

and a fixed tooth piece is fixedly arranged on the inner spherical surface of the hemisphere I and close to the end part.

As a further description of the above technical solution:

and a reset torsion spring is arranged on the connecting block and positioned outside the rotating shaft.

As a further description of the above technical solution:

the top end of the valve seat is provided with a sealing cavity, and sealing filler is filled in the sealing cavity.

As a further description of the above technical solution:

and sealing rings are bonded on the edges of the two sides of the shell.

As a further description of the above technical solution:

the end part of the limiting rod is provided with a triangular bulge.

In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:

1. according to the invention, through the arrangement of the first hemisphere, the second hemisphere, the first sealing gasket and the second sealing gasket, the integrally formed sphere is split into the combined sphere, so that a buffer space is formed between the first hemisphere and the second hemisphere, the first hemisphere and the second hemisphere are seamlessly connected by utilizing the matched extrusion of the first sealing gasket and the second sealing gasket, and the combined sphere has elastic deformation potential energy, so that when water pressure impacts the sphere, not only can the pressure be resisted through the strength of the sphere, but also a part of impact force can be converted into the elastic deformation of the first sealing gasket and the second sealing gasket, the loss of the sphere is reduced, and the service life of the sphere is prolonged.

2. According to the invention, through the arrangement of the fixed rod, the triangular limiting block and the second torsion spring, the pin shaft is utilized to push the rotating block to rotate clockwise, the rotating shaft is driven to rotate by the rotating of the rotating block, and the limiting rod is driven to rotate by the rotating shaft, so that the limiting rod is separated from the triangular limiting block, the shell cover and the shell are separated, and the interior of the pneumatic mechanism is convenient to overhaul.

Drawings

FIG. 1 is a schematic sectional front view of a pneumatic orbital ball valve according to the present invention;

FIG. 2 is a schematic diagram of a ball structure of the pneumatic orbital ball valve according to the invention;

FIG. 3 is a schematic structural diagram of a first sealing gasket and a second sealing gasket of the pneumatic track ball valve provided by the invention;

FIG. 4 is an enlarged schematic view of the portion A of the pneumatic track ball valve according to the present invention;

FIG. 5 is an enlarged schematic view of the section B of the pneumatic track ball valve according to the present invention;

illustration of the drawings:

1. a pneumatic mechanism; 2. a valve seat; 3. a valve stem; 4. a sphere; 5. sealing the cavity; 6. a seal ring; 101. a shell cover; 102. a housing; 103. rotating the block; 104. a pin shaft; 105. a spring; 106. a groove; 107. a second torsion spring; 108. a triangular limiting block; 109. a limiting rod; 401. a hemisphere I; 402. a hemisphere II; 403. a first sealing gasket; 404. a second sealing gasket; 405. connecting blocks; 406. an arc-shaped fixing rod; 407. fixing the tooth sheet; 408. a return torsion spring; 4031. a dovetail groove; 4041. dovetail lugs; 4061. and (5) fixing the hook.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

Referring to fig. 1-5, the pneumatic track ball valve includes a pneumatic mechanism 1, a valve seat 2, a valve stem 3, a ball 4 fixedly mounted at the bottom end of the valve stem 3 through a connecting pin, the ball 4 includes a first hemisphere 401 and a second hemisphere 402, the integrally formed ball 4 is split into the combined ball 4, a buffer space is ensured between the first hemisphere 401 and the second hemisphere 402, a first sealing pad 403 is disposed at the end of the first hemisphere 401, a dovetail groove 4031 is disposed on the side wall of the first sealing pad 403, a second sealing pad 404 is disposed at the end of the second hemisphere 402, a dovetail projection 4041 is integrally formed on the side wall of the second sealing pad 404, the dovetail groove 4031 is connected with the dovetail projection 4041 in a clamping manner, the first sealing pad 403 and the second sealing pad 404 are stably connected and are not easily separated from each other due to the clamping connection between the dovetail groove 1 and the dovetail projection 4041, and the first sealing pad 403, the valve seat has a buffering effect, the top end of the valve seat 2 is provided with the sealing cavity 5, and the sealing cavity 5 is filled with sealing filler, so that the sealing performance of the valve seat 2 is guaranteed.

Example 2

Referring to fig. 1-5, a connecting block 405 is fixedly mounted on an inner spherical surface of the second hemisphere 402 and near an end portion, the connecting block 405 is rotatably connected with an arc-shaped fixing rod 406 through a rotating shaft, an integrally formed fixing hook 4061 is disposed on the arc-shaped fixing rod 406, a fixing tooth piece 407 is fixedly mounted on the inner spherical surface of the first hemisphere 401 and near the end portion, the fixing hook 4061 and the fixing tooth piece 407 are both parallelogram structures, so that tight hooking between the fixing hook 4061 and the fixing tooth piece 407 is ensured, the connection tightness between the first hemisphere 401 and the second hemisphere 402 is further enhanced, a reset torsion spring 408 is disposed on the connecting block 405 and outside the rotating shaft, elastic potential energy of the reset torsion spring 408 acts on the arc-shaped fixing rod 406, and the fixing hook 4061 is prevented from being separated from the fixing tooth piece 407 by water impact.

Example 3

Referring to fig. 1-5, the pneumatic mechanism 1 includes a housing cover 101 and a housing 102, the top and bottom inner surface walls of the housing 102 are provided with triangular stoppers 108, the housing cover 101 is provided with a groove 106, the inside of the groove 106 is rotatably connected with a stopper 109 through a rotating shaft, the rotating shaft is fixedly provided with a rotating block 103, the end of the stopper 109 is provided with a triangular protrusion, the triangular stopper 108 is engaged with the triangular protrusion, one side of the rotating block 103 is provided with a pin 104, the end of the pin 104 extends to the outside through the inner surface wall of the housing cover 101 and is elastically connected with the outer surface wall of the housing cover 101 through a spring 105, the arrangement of the spring 105 ensures that the pin 104 is restored to the original position without being affected by an external force, the lower part of the stopper 109 in the groove 106 is rotatably connected with a second torsion spring 107 through the rotating shaft, the stopper 109 is ensured to be restored to the horizontal position under the action of the second torsion, the casing cover 101 and the front surface of the sealing ring 6 are extruded to form a closed space.

The working principle is as follows: when the pneumatic ball valve is in a closed state, the outer spherical surfaces of the first hemisphere 401 and the second hemisphere 402 are impacted by water pressure, so that the first sealing gasket 403 and the second sealing gasket 404 are mutually extruded to form elastic deformation, part of the water pressure resists pressure through the strength of the ball body 4, the other part of the impact force is converted into the elastic deformation of the first sealing gasket 403 and the second sealing gasket 404, and when the ball body 4 is impacted, a process of buffering and reducing pressure exists, so that the abrasion of the ball body 4 is reduced, and the service life of the ball body 4 is prolonged; when the inside of pneumatic mechanism 1 overhauls, press round pin axle 104, round pin axle 104 promotes turning block 103 clockwise rotation, and the rotation of turning block 103 takes the pivot to rotate, and the rotation of pivot drives gag lever post 109 and rotates for gag lever post 109 breaks away from with triangle stopper 108, thereby with cap 101 and casing 102 split, is convenient for overhaul pneumatic mechanism 1 inside.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. Pneumatic track ball valve, including pneumatic mechanism (1), valve holder (2), valve rod (3), its characterized in that, there is spheroid (4) bottom of valve rod (3) through connecting pin fixed mounting, spheroid (4) include hemisphere one (401) and hemisphere two (402), the tip of hemisphere one (401) is provided with sealed pad one (403), dovetail (4031) has been seted up on the lateral wall of sealed pad one (403), the tip of hemisphere two (402) is provided with sealed pad two (404), be provided with integrated into one piece's forked tail lug (4041) on the lateral wall of sealed pad two (404), pneumatic mechanism (1) includes shell cover (101) and casing (102), the top and the bottom inside table wall of casing (102) are provided with triangle stopper (108), recess (106) have been seted up on shell cover (101), the inside of recess (106) is connected with gag lever post (109) through the pivot rotation, and fixed mounting has turning block (103) in the pivot, one side of turning block (103) is provided with round pin axle (104), the tip of round pin axle (104) runs through the interior table wall of cap (101) and extends to the outside, and the outward appearance wall elastic connection through spring (105) and cap (101), just the below that is located gag lever post (109) in recess (106) is connected with torsional spring two (107) through the pivot rotation.

2. The pneumatic track ball valve according to claim 1, wherein the dovetail groove (4031) is snap-fit connected with a dovetail projection (4041).

3. The pneumatic track ball valve as claimed in claim 1, wherein a connecting block (405) is fixedly installed on the inner spherical surface of the second hemisphere (402) and near the end portion, the connecting block (405) is rotatably connected with an arc-shaped fixing rod (406) through a rotating shaft, and the arc-shaped fixing rod (406) is provided with an integrally formed fixing hook (4061).

4. A pneumatic orbital ball valve as claimed in claim 3 wherein said inner spherical surface of hemisphere one (401) is fixedly mounted with a fixed tooth plate (407) near the end thereof.

5. A pneumatic orbital ball valve according to claim 4 characterized in that on the connecting block (405) and outside the rotation shaft there is provided a return torsion spring (408).

6. A pneumatic orbital ball valve according to claim 1, characterized in that the top end of the seat (2) is provided with a sealing cavity (5), the sealing cavity (5) being filled with a sealing filler.

7. A pneumatic orbital ball valve as claimed in claim 1 wherein sealing rings (6) are bonded to the two side edges of the housing (102).

8. A pneumatic orbital ball valve according to claim 1, characterized in that the end of the limit rod (109) is provided with a triangular projection.