CN211574271U - Pneumatic vacuum valve - Google Patents
Pneumatic vacuum valve Download PDFInfo
- Publication number
- CN211574271U CN211574271U CN202020130935.2U CN202020130935U CN211574271U CN 211574271 U CN211574271 U CN 211574271U CN 202020130935 U CN202020130935 U CN 202020130935U CN 211574271 U CN211574271 U CN 211574271U
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- valve
- end cover
- rubber sealing
- valve core
- cavity
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Abstract
The utility model discloses a pneumatic vacuum valve, which comprises a valve cavity, wherein an upper end cover is arranged in the valve cavity, a first sealing ring is arranged on the contact surface of the upper end cover and the valve cavity, a valve core connected through a ball bush is arranged in the upper end cover, a second sealing ring positioned in the middle, a lip-shaped sealing ring positioned at the bottom and an elastic check ring for holes are arranged on the contact surface of the valve core and the upper end cover, a rubber sealing plug is arranged at the bottom of the valve core, rubber sealing gaskets are arranged on the top surface and the bottom surface of the rubber sealing plug, the rubber sealing plug is matched with a first valve port communicated with a vacuum pump at the bottom of the valve cavity, and a second valve port communicated; and the cylinder is arranged above the upper end cover through a support rod, and a piston rod of the cylinder is connected with the valve core through a floating joint. The utility model provides a pneumatic vacuum valve, simple structure easily makes, low cost, stand wear and tear, long service life, can conveniently combine together with automated control system.
Description
Technical Field
The utility model belongs to the technical field of valve equipment technique and specifically relates to a pneumatic vacuum valve is related to for negative pressure pipeline.
Background
And a vacuum valve is usually arranged on a connecting pipeline between the vacuum pump and the vacuum box and used for ensuring that the negative pressure conveying pipeline can be automatically opened or closed under the control of the PLC. However, the service life of the currently marketed vacuum valve is short due to design reasons, and the sealing element in the valve is easy to wear, so that the vacuum valve leaks air, the vacuum degree of the system is not up to standard, and normal production is affected.
Disclosure of Invention
In order to solve the above problem, the utility model provides a pneumatic vacuum valve can take following technical scheme:
pneumatic vacuum valve, include
The vacuum valve comprises a valve cavity, wherein an upper end cover is arranged in the valve cavity, a first sealing ring is arranged on the contact surface of the upper end cover and the valve cavity, a valve core connected through a ball bushing is arranged in the upper end cover, a second sealing ring positioned in the middle, a lip-shaped sealing ring positioned at the bottom and an elastic check ring for holes are arranged on the contact surface of the valve core and the upper end cover, rubber sealing plugs are arranged at the bottom of the valve core, rubber sealing gaskets are arranged on the top surface and the bottom surface of each rubber sealing plug, the rubber sealing plugs are matched with a first valve port communicated with a vacuum pump at the bottom of the valve cavity, and a;
the cylinder is arranged above the upper end cover through a support rod, and a piston rod of the cylinder is connected with the valve core through a floating joint.
The ball bearing bush is arranged on the top of the upper end cover.
The bottom of the valve cavity is sleeved with a connecting flange forming the first valve port through a round nut, and the matching surface of the first valve port and the rubber sealing plug is of a conical structure.
The pneumatic vacuum valve provided by the utility model has simple structure, easy manufacture and low cost, the valve core is driven by the cylinder and is provided with the ball bush in a matching way, so that the valve core keeps linear motion, and abnormal abrasion of the sealing structure caused by deviating the motion track is effectively reduced; secondly, the sealing plug at the end part of the valve core is clamped by the upper and lower rubber sealing gaskets, so that the wear resistance is improved, and the service life is prolonged; thirdly, a plurality of sealing structures are arranged on the contact surfaces of the valve cavity, the upper end cover and the valve core, so that the sealing performance is improved, the vacuum degree of the system is kept, and the smooth production is ensured; finally, the cylinder is used as a driving force, so that the cylinder can be conveniently combined with an automatic control system, and the opening and closing sensitivity of the negative pressure conveying pipeline is improved.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a longitudinal sectional view of fig. 1.
Detailed Description
The following describes embodiments of the present invention in detail with reference to the drawings, which are implemented on the premise of the technical solution of the present invention, and detailed embodiments and specific operation procedures are provided, but the scope of the present invention is not limited to the following embodiments.
As shown in fig. 1 and 2, the pneumatic vacuum valve of the present invention comprises a valve cavity 1, an upper end cover 2 is installed in the valve cavity 1, two first sealing rings 3 are installed on the contact surface of the upper end cover 2 and the valve cavity 1, a valve core 5 connected through a ball bushing 4 is installed in the upper end cover 2, the ball bushing 4 is located at the top of the upper end cover 2, three second sealing rings 6 located in the middle and a lip-shaped sealing ring 7 located at the bottom are installed on the contact surface of the valve core 5 and the upper end cover 2, an elastic check ring 8 for hole is installed at the bottom of the valve core 5, a rubber sealing ring 10 is embedded on the top surface and the bottom surface of the rubber sealing ring 9, the rubber sealing ring 9 is matched with a first valve port 11 communicated with a vacuum pump at the bottom of the valve cavity 1, and a second valve port 12 communicated with a; the first valve port 11 is located on a connecting flange 13, the connecting flange 13 is installed at the bottom of the valve chamber 1 through a round nut 14, and the matching surface of the first valve port 11 and the rubber sealing plug 9 is in a conical structure. The top of the valve cavity 1 is provided with a cylinder 15, specifically, the upper end cover 2 is provided with a mounting plate connected through a support rod 16, the mounting plate is provided with the cylinder 15, and a piston rod of the cylinder 15 is connected with the valve core 5 through a floating joint 17.
When a negative pressure pipeline of the production system needs to be closed, the rubber sealing plug 9 of the valve core 5 is in sealing fit with the first valve port 11 only through the action of the air cylinder 15; when the production system needs to be vacuumized, the rubber sealing plug 9 of the valve core 5 is separated from the first valve port 11 through the air cylinder 15, and the vacuum pump and the vacuum box are communicated to vacuumize the system.
Claims (3)
1. A pneumatic vacuum valve, characterized by: comprises that
The vacuum valve comprises a valve cavity, wherein an upper end cover is arranged in the valve cavity, a first sealing ring is arranged on the contact surface of the upper end cover and the valve cavity, a valve core connected through a ball bushing is arranged in the upper end cover, a second sealing ring positioned in the middle, a lip-shaped sealing ring positioned at the bottom and an elastic check ring for holes are arranged on the contact surface of the valve core and the upper end cover, rubber sealing plugs are arranged at the bottom of the valve core, rubber sealing gaskets are arranged on the top surface and the bottom surface of each rubber sealing plug, the rubber sealing plugs are matched with a first valve port communicated with a vacuum pump at the bottom of the valve cavity, and a;
the cylinder is arranged above the upper end cover through a support rod, and a piston rod of the cylinder is connected with the valve core through a floating joint.
2. The pneumatic vacuum valve according to claim 1, wherein: the ball bearing bush is arranged on the top of the upper end cover.
3. The pneumatic vacuum valve according to claim 1, wherein: the bottom of the valve cavity is sleeved with a connecting flange forming the first valve port through a round nut, and the matching surface of the first valve port and the rubber sealing plug is of a conical structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020130935.2U CN211574271U (en) | 2020-01-20 | 2020-01-20 | Pneumatic vacuum valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020130935.2U CN211574271U (en) | 2020-01-20 | 2020-01-20 | Pneumatic vacuum valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211574271U true CN211574271U (en) | 2020-09-25 |
Family
ID=72525392
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020130935.2U Active CN211574271U (en) | 2020-01-20 | 2020-01-20 | Pneumatic vacuum valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211574271U (en) |
-
2020
- 2020-01-20 CN CN202020130935.2U patent/CN211574271U/en active Active
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |