CN111810671A - Pneumatic zero-friction hard sealing ball valve with telescopic ball - Google Patents
Pneumatic zero-friction hard sealing ball valve with telescopic ball Download PDFInfo
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- CN111810671A CN111810671A CN202010835039.0A CN202010835039A CN111810671A CN 111810671 A CN111810671 A CN 111810671A CN 202010835039 A CN202010835039 A CN 202010835039A CN 111810671 A CN111810671 A CN 111810671A
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- valve
- ball
- pneumatic
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- fixedly connected
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K7/00—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves
- F16K7/12—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves with flat, dished, or bowl-shaped diaphragm
- F16K7/126—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves with flat, dished, or bowl-shaped diaphragm the seat being formed on a rib perpendicular to the fluid line
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
- F16K5/0647—Spindles or actuating means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
- F16K5/0663—Packings
- F16K5/0668—Single packings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/08—Details
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Taps Or Cocks (AREA)
Abstract
The invention discloses a pneumatic zero-friction telescopic ball hard sealing ball valve which comprises a special-shaped ball body, a valve post and a pneumatic actuating mechanism, wherein the bottom of the valve body is fixedly connected with a lower body, a lower valve rod is arranged inside the lower body, a tapered roller bearing is embedded between the lower valve rod and the lower body, a valve seat is arranged inside the valve body, the special-shaped ball body is arranged inside the valve seat, the bottom of the special-shaped ball body is positioned inside the lower valve rod and provided with a lower valve rod shaft core, the top of the special-shaped ball body is symmetrically and fixedly connected with two groups of connecting rods, the top of the valve body is fixedly connected with a middle body, the middle of the middle body is provided with the valve post, and a. In the invention, the telescopic rotary opening and closing structure is adopted, so that the sealing surface of the ball body can be completely separated from the sealing surface of the valve seat in the opening and closing processes of the hard sealing ball valve, thereby realizing the zero-friction opening and closing treatment of the hard sealing ball valve.
Description
Technical Field
The invention relates to the technical field of hard seal ball valves, in particular to a pneumatic zero-friction telescopic ball hard seal ball valve.
Background
Ball valve, the open-close piece (special ball) is driven by the valve rod and rotates around the axis of the ball valve. The hard seal V-shaped ball valve can also be used for regulating and controlling fluid, wherein a V-shaped ball core of the hard seal V-shaped ball valve and a metal valve seat of the build-up welding hard alloy have strong shearing force, and the hard seal V-shaped ball valve is particularly suitable for media containing fibers, tiny solid particles and the like. The multi-way ball valve can flexibly control the confluence, the diversion and the switching of the flow direction of the medium on the pipeline, and can close any channel to connect the other two channels. The valve of this type should be generally installed horizontally in the pipeline. The ball valve is divided into: pneumatic ball valves, electric ball valves, manual ball valves. However, the pneumatic hard sealing ball valve of the prior art still has the defects that: the contact sealing structure is mostly adopted between the ball body and the valve seat, in the process of opening and closing the valve, the sealing surface of the ball body is easy to directly contact and rub the sealing surface of the valve seat, the friction force between the ball body and the valve seat is large in the process of rotating to open and close the valve, and meanwhile, when the valve is opened and closed for a long time, an abrasion gap is easy to generate between the ball body and the valve seat, so that the overall sealing effect of the hard sealing ball valve is reduced.
Disclosure of Invention
The invention aims to: the pneumatic zero-friction telescopic ball hard seal ball valve is provided for solving the problems that the friction force is large in the opening and closing processes of a valve and the sealing performance is gradually reduced in long-term use of the traditional pneumatic hard seal ball valve.
In order to achieve the purpose, the invention adopts the following technical scheme:
the pneumatic zero-friction telescopic ball hard sealing ball valve comprises a special-shaped ball body, a valve post and a pneumatic actuating mechanism, wherein the bottom of the valve body is fixedly connected with a lower body, a lower valve rod is arranged in the lower body, a tapered roller bearing is embedded between the lower valve rod and the lower body, a valve seat is arranged in the valve body, the inner side of the valve seat is provided with a special-shaped ball body, the bottom of the special-shaped ball body is positioned at the inner side of the lower valve rod and is provided with a lower valve rod shaft core, the top of the special-shaped ball body is symmetrically and fixedly connected with two groups of connecting rods, the top of the valve body is fixedly connected with a middle body, the middle part of the middle body is provided with a valve post, and the bottom end of the valve column and the two groups of connecting rods are inserted with fixing pins, the top of the middle body is provided with a bracket, the pneumatic actuator is arranged at the top of the support and consists of a telescopic cylinder and a torsion cylinder, and the bottom end of the pneumatic actuator is in transmission connection with the top end of the valve column.
As a further description of the above technical solution:
the bottom of the lower part of the body can be dismantled fixedly connected with bottom, and inlays between the top of bottom and the lower part of the body and is equipped with the bottom gasket.
As a further description of the above technical solution:
and a middle flange gasket is embedded between the gap between the valve body and the lower body.
As a further description of the above technical solution:
and a packing layer is filled between the middle body and the valve column.
As a further description of the above technical solution:
and a packing gland is arranged on the top of the middle body above the packing layer.
As a further description of the above technical solution:
and a wedge block is embedded between the gap between the valve column and the connecting rod outside the fixing pin.
As a further description of the above technical solution:
the bottom end of the pneumatic actuating mechanism is fixedly connected with a sliding sleeve which is horizontally distributed, and a guide shaft penetrating through the valve column is connected to the inside of the sliding sleeve in a sliding mode.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
the invention adopts a telescopic rotary opening and closing structure, when a telescopic cylinder of a pneumatic actuating mechanism works, a valve column and a special-shaped ball body can be driven to integrally and vertically move upwards, in this state, the special-shaped ball body can be upwards contracted, the volume can be reduced, a sealing surface of the special-shaped ball body and a sealing surface of a valve seat can be completely separated, simultaneously, when a twisting cylinder of the pneumatic actuating mechanism works, the valve column and the special-shaped ball body can be driven to integrally rotate 90 degrees anticlockwise or clockwise, and the special-shaped ball body can be adjusted to carry out corresponding opening or closing treatment.
Drawings
FIG. 1 is a schematic diagram of a pneumatic zero-friction expansion ball hard seal ball valve according to the present invention;
FIG. 2 is a schematic structural view of the lower body of the present invention;
FIG. 3 is a schematic view showing a connection structure of the intermediate body and the valve post according to the present invention.
Illustration of the drawings:
1. a bottom cap gasket; 2. a lower valve stem; 3. a shaped sphere; 4. a wedge block; 5. a valve body; 6. a fixing pin; 7. a middle body; 8. a spool; 9. a support; 10. a pneumatic actuator; 11. a sliding sleeve; 12. a guide shaft; 13. a packing gland; 14. a filler layer; 15. a connecting rod; 16. a valve seat; 17. a lower valve stem shaft core; 18. a tapered roller bearing; 19. a middle flange gasket; 20. a lower body; 21. a bottom cover.
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.
Referring to fig. 1-3, the present invention provides a technical solution: a pneumatic zero-friction telescopic ball hard sealing ball valve comprises a special-shaped ball body 3, a valve body 5, a valve post 8 and a pneumatic actuator 10, wherein the bottom of the valve body 5 is fixedly connected with a lower body 20, a lower valve rod 2 is arranged inside the lower body 20, a tapered roller bearing 18 is embedded between the lower valve rod 2 and the lower body 20, a valve seat 16 is arranged inside the valve body 5, the special-shaped ball body 3 is arranged inside the valve seat 16, a lower valve rod shaft core 17 is arranged at the bottom of the special-shaped ball body 3 and positioned inside the lower valve rod 2, two groups of connecting rods 15 are symmetrically and fixedly connected with the top of the special-shaped ball body 3, the top of the valve body 5 is fixedly connected with a middle body 7, the valve post 8 is arranged in the middle of the middle body 7, a fixing pin 6 is inserted between the bottom end of the valve post 8 and the two groups of connecting rods 15, a support 9 is arranged at the, the torsion cylinder can drive the valve column 8 to rotate, the telescopic cylinder can drive the valve column 8 to move up and down, and the bottom end of the pneumatic actuating mechanism 10 is in transmission connection with the top end of the valve column 8.
Specifically, as shown in fig. 1 and 2, a bottom cover 21 is detachably and fixedly connected to the bottom of the lower body 20, a bottom cover gasket 1 is embedded between the top end of the bottom cover 21 and the lower body 20, a middle flange gasket 19 is embedded between the gap between the valve body 5 and the lower body 20, the bottom cover 21 is arranged to facilitate the installation and removal of the lower valve rod 2 and the lower valve rod shaft core 17, the bottom cover gasket 1 is arranged to improve the installation tightness and tightness of the lower body 20 and the bottom cover 21, and the middle flange gasket 19 is arranged to block and seal the gap between the valve body 5 and the lower body 20.
Specifically, as shown in fig. 1 and 3, a packing layer 14 is filled between the middle body 7 and the valve column 8, a packing gland 13 is installed on the top of the middle body 7 above the packing layer 14, and the packing layer 14 can be selected from lubricating oil according to actual use requirements, so that the lubricating and sealing treatment of the joint between the middle body 7 and the valve column 8 is realized, and the packing layer 14 can be blocked between the middle body 7 and the valve column 8 by the arrangement of the packing gland 13.
Specifically, as shown in fig. 1, a wedge 4 is embedded between the gap between a valve column 8 and a connecting rod 15 outside a fixing pin 6, a sliding sleeve 11 horizontally distributed is fixedly connected to the bottom end of a pneumatic actuator 10, a guide shaft 12 penetrating through the valve column 8 is slidably connected to the inside of the sliding sleeve 11, the wedge 4 is made of a rubber material, the stability of installation and transmission between the valve column 8 and the connecting rod 15 is improved, the sliding sleeve 11 is arranged, the sliding adjustment processing of the guide shaft 12 is facilitated, the guide shaft 12 is arranged, and the installation, disassembly and transmission processing between the pneumatic actuator 10 and the valve column 8 are facilitated.
The working principle is as follows: when the pneumatic actuating mechanism 10 is used, when the telescopic cylinder of the pneumatic actuating mechanism 10 works, the valve column 8, the wedge block 4, the connecting rod 15 and the special-shaped ball 3 are driven to vertically move upwards in the valve body 5, at the moment, the special-shaped ball 3 contracts and has a small volume, the sealing surface of the special-shaped ball 3 is completely separated from the sealing surface of the valve seat 16, when the twisting cylinder of the pneumatic actuating mechanism 10 works, the valve column 8 and the special-shaped ball 3 are driven to rotate 90 degrees anticlockwise in the valve body 5, and the valve opening is completed; when the torsion cylinder of the pneumatic actuator 10 drives the valve post 8 and the special-shaped ball 3 assembly to rotate 90 degrees clockwise, the telescopic cylinder of the pneumatic actuator 10 works to drive the valve post 8 and the special-shaped ball 3 assembly to move vertically downwards, the special-shaped ball 3 is propped open by the wedge block 4 assembly, the volume of the special-shaped ball 3 is increased, when the sealing surface of the special-shaped ball 3 presses against the sealing surface of the valve seat 16, the valve is closed, and in the whole opening and closing process of the valve, the sealing surface of the special-shaped ball 3 is completely separated from the sealing surface of the valve seat 16, so that zero-friction opening and closing processing of the hard seal ball valve is realized.
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 (7)
1. A pneumatic zero-friction telescopic ball hard sealing ball valve comprises a special-shaped ball body (3), a valve body (5), a valve post (8) and a pneumatic actuating mechanism (10), and is characterized in that the bottom of the valve body (5) is fixedly connected with a lower body (20), a lower valve rod (2) is installed inside the lower body (20), a tapered roller bearing (18) is embedded between the lower valve rod (2) and the lower body (20), a valve seat (16) is installed inside the valve body (5), the special-shaped ball body (3) is arranged on the inner side of the valve seat (16), a lower valve rod shaft core (17) is installed on the bottom of the special-shaped ball body (3) and positioned on the inner side of the lower valve rod (2), two groups of connecting rods (15) are symmetrically and fixedly connected with the top of the special-shaped ball body (3), a middle body (7) is fixedly connected with the top of the valve body (5), and a fixing pin (6) is inserted between the bottom end of the valve column (8) and the two groups of connecting rods (15), a support (9) is installed at the top of the middle body (7), a pneumatic actuating mechanism (10) is installed at the top of the support (9), the pneumatic actuating mechanism (10) is composed of a telescopic cylinder and a torsion cylinder, and the bottom end of the pneumatic actuating mechanism (10) is in transmission connection with the top end of the valve column (8).
2. The pneumatic zero-friction telescopic ball hard seal ball valve according to claim 1, wherein a bottom cover (21) is detachably and fixedly connected to the bottom of the lower body (20), and a bottom cover gasket (1) is embedded between the top end of the bottom cover (21) and the lower body (20).
3. The pneumatic zero-friction telescopic ball hard seal ball valve according to claim 2, characterized in that a middle flange gasket (19) is embedded between the gap between the valve body (5) and the lower body (20).
4. The pneumatic zero-friction telescopic ball hard seal ball valve according to claim 1, characterized in that a packing layer (14) is filled between the middle body (7) and the valve column (8).
5. The pneumatic zero-friction telescopic ball hard seal ball valve according to claim 4, characterized in that a packing gland (13) is installed on the top of the middle body (7) above the packing layer (14).
6. The pneumatic zero-friction telescopic ball hard seal ball valve according to claim 1, characterized in that a wedge (4) is embedded between the gap between the valve column (8) and the connecting rod (15) at the outside of the fixing pin (6).
7. The pneumatic zero-friction telescopic ball hard seal ball valve according to claim 1, characterized in that a horizontally distributed sliding sleeve (11) is fixedly connected to the bottom end of the pneumatic actuator (10), and a guide shaft (12) penetrating through the valve column (8) is slidably connected to the inside of the sliding sleeve (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010835039.0A CN111810671A (en) | 2020-08-19 | 2020-08-19 | Pneumatic zero-friction hard sealing ball valve with telescopic ball |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010835039.0A CN111810671A (en) | 2020-08-19 | 2020-08-19 | Pneumatic zero-friction hard sealing ball valve with telescopic ball |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111810671A true CN111810671A (en) | 2020-10-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010835039.0A Withdrawn CN111810671A (en) | 2020-08-19 | 2020-08-19 | Pneumatic zero-friction hard sealing ball valve with telescopic ball |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111810671A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115076423A (en) * | 2022-06-09 | 2022-09-20 | 特技阀门集团有限公司 | Zero-friction telescopic ball valve |
-
2020
- 2020-08-19 CN CN202010835039.0A patent/CN111810671A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115076423A (en) * | 2022-06-09 | 2022-09-20 | 特技阀门集团有限公司 | Zero-friction telescopic ball valve |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20201023 |