CN201100463Y - Mechanical vacuum pressure difference valve - Google Patents
Mechanical vacuum pressure difference valve Download PDFInfo
- Publication number
- CN201100463Y CN201100463Y CNU2007200426090U CN200720042609U CN201100463Y CN 201100463 Y CN201100463 Y CN 201100463Y CN U2007200426090 U CNU2007200426090 U CN U2007200426090U CN 200720042609 U CN200720042609 U CN 200720042609U CN 201100463 Y CN201100463 Y CN 201100463Y
- Authority
- CN
- China
- Prior art keywords
- valve
- valve body
- differential pressure
- cross bar
- pressure valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a mechanical vacuum differential pressure valve which is characterized in that a top cover is flange connected with a pipeline, a valve body clings onto the top cover, a cross bar is arranged in the valve body; the head portion of the cross bar with taper is point connected with the lower portion taper of a valve board; a hollow cap nut arranged on the edge of the valve body communicates with atmosphere; the front end of a steel ball is provided with a sealing ring, and the back end thereof is connected with a spring; an air inlet is arranged on the cross beam of the valve body, and a cross bar is arranged in the cross beam. The mechanical vacuum differential pressure valve has the advantages that the electromagnetic control system on the electromagnetic vacuum differential pressure valve is canceled, a valve body and accessories in the valve body are only needed; the mechanical vacuum differential pressure valve is safe, reliable and practical, and the cost of the differential pressure valve is decreased; the mechanical vacuum differential pressure valve has the whole effect of the electromagnetic vacuum differential pressure valve, and can operate automatically.
Description
Technical field
The utility model relates to a kind of mechanical type vacuum pressure difference valve, belong to vacuum gas filling valve technology field.
Background technique
In vacuum system, the bleeding point of vacuum pump is equipped with ELECTROMAGNETIC VACUUM pressure difference valve (vacuum gas filling valve).After connecting power supply, its effect is: when connecting power supply: pass emptying valve → open system valve → system is vacuumized, when powered-down: closing system's valve → open emptying valve → system is kept vacuum is to connect, carried out by ELECTROMAGNETIC VACUUM pressure difference valve (gas charging valve) in the powered-down to the operation of this numerous and diverse open and close system valve and emptying valve, vacuum pump pump oil and air backflow to vacuum system when preventing termination of pumping or unexpected the power failure, let out simultaneously except that the vacuum in the vacuum pump pump chamber, avoid the vacuum pump on-load to restart, and the infringement vacuum pump.The vacuum pressure difference valve is a valve commonly used in the vacuum system, and only the ELECTROMAGNETIC VACUUM pressure difference valve is a kind of.This pressure difference valve needs the additional electromagnetic control system, and price is higher.
Summary of the invention
The purpose of this utility model is intended to overcome the defective that prior art exists, and proposes a kind of mechanical type vacuum pressure difference valve, has cancelled the electromagnetic control system on the ELECTROMAGNETIC VACUUM pressure difference valve, and only a valve body and inner annex get final product.Both safe, reliable, practical, reduced the cost of pressure difference valve again.
Technical solution of the present utility model: its structure is that loam cake and pipeline flange join, and valve body is close to and covers, and cross bar is in valve body; The head of cross bar is the band tapering, and the bottom tapering point of it and valve plate joins; Hollow nut is contained in the edge of valve body, communicates with atmosphere, and the front end of steel ball is a seal ring, and the rear end and the spring of steel ball join, and suction port is located on the crossbeam of valve body, and cross bar is installed in this crossbeam.
Advantage of the present utility model: cancelled the electromagnetic control system on the ELECTROMAGNETIC VACUUM pressure difference valve, only a valve body and inner annex get final product.Both safe, reliable, practical, reduced the cost of pressure difference valve again.Mechanical type vacuum pressure difference valve has just played whole effects of ELECTROMAGNETIC VACUUM pressure difference valve, and is to finish automatically.
Description of drawings
Accompanying drawing 1 is a structural representation of the present utility model.
A among the figure is that loam cake, B are that valve body, C are that cross bar, D are that hollow nut, E are that valve plate, F are that steel ball, g are that seal ring, h are that point, the Z that valve plate E bottom is tapering is suction port.
Embodiment
Contrast accompanying drawing 1, its structure is that loam cake A and pipeline flange join, and valve B is close on the loam cake A, and cross bar C is in valve B; The head of cross bar C is the band tapering, and the h point that it and valve plate E bottom are tapering joins; Hollow nut D is contained in the edge of valve B, communicates with atmosphere, and the front end of steel ball F is seal ring g, and rear end and the spring of steel ball F join, and suction port Z is located on the crossbeam of valve B, and cross bar C is installed in this crossbeam.
During work, connect the action of power initiation final vacuum pump when vacuum pump, along with the increasing of pressure reduction between system and the atmosphere, steel ball F is held, and is close to seal ring g and makes the vacuum pump Nutrison Fibre vacuumize limiting value up to vacuum pump to system.When outage or have a power failure suddenly, valve plate E moves on immediately under the effect of pressure reduction, and it is isolated with system with vacuum pump chamber that seal ring g is close to loam cake A, makes system's maintenance high vacuum; Along with moving on the valve plate E, pushed to steel ball F with its cross bar C that is tapering contacts by transverse force, make it break away from seal ring g, atmosphere is just by the air drain on hollow nut D and the cross bar C, enters the pump chamber of vacuum pump through suction port Z, removed the vacuum of vacuum pump.After the vacuum of system is also removed (end-of-job), valve plate E resets under action of gravity, the cross bar C that contacts with its tapering also reset under the elastic force of spring (but not being close to seal ring).Mechanical type vacuum pressure difference valve has just played whole effects of ELECTROMAGNETIC VACUUM pressure difference valve, and is to finish automatically.
Claims (1)
1, mechanical type vacuum pressure difference valve is characterized in that loam cake and pipeline flange join, and valve body is close to and covers, and cross bar is in valve body; The head of cross bar is the band tapering, and the bottom tapering point of it and valve plate joins; Hollow nut is contained in the edge of valve body, communicates with atmosphere, and the front end of steel ball is a seal ring, and the rear end and the spring of steel ball join, and suction port is located on the crossbeam of valve body, and cross bar is installed in this crossbeam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200426090U CN201100463Y (en) | 2007-11-21 | 2007-11-21 | Mechanical vacuum pressure difference valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200426090U CN201100463Y (en) | 2007-11-21 | 2007-11-21 | Mechanical vacuum pressure difference valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201100463Y true CN201100463Y (en) | 2008-08-13 |
Family
ID=39936996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200426090U Expired - Fee Related CN201100463Y (en) | 2007-11-21 | 2007-11-21 | Mechanical vacuum pressure difference valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201100463Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102042420A (en) * | 2009-10-15 | 2011-05-04 | Smc株式会社 | Gate valve |
| WO2013053241A1 (en) * | 2011-10-09 | 2013-04-18 | 北京七星华创电子股份有限公司 | Liquid storage apparatus |
-
2007
- 2007-11-21 CN CNU2007200426090U patent/CN201100463Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102042420A (en) * | 2009-10-15 | 2011-05-04 | Smc株式会社 | Gate valve |
| CN102042420B (en) * | 2009-10-15 | 2013-03-27 | Smc株式会社 | Gate valve |
| WO2013053241A1 (en) * | 2011-10-09 | 2013-04-18 | 北京七星华创电子股份有限公司 | Liquid storage apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080813 Termination date: 20091221 |