CN202673631U - Pressure relief valve for vacuum pump - Google Patents
Pressure relief valve for vacuum pump Download PDFInfo
- Publication number
- CN202673631U CN202673631U CN 201220346454 CN201220346454U CN202673631U CN 202673631 U CN202673631 U CN 202673631U CN 201220346454 CN201220346454 CN 201220346454 CN 201220346454 U CN201220346454 U CN 201220346454U CN 202673631 U CN202673631 U CN 202673631U
- Authority
- CN
- China
- Prior art keywords
- valve
- vacuum pump
- valve seat
- pressure
- ball
- 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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- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Abstract
The utility model relates to a pressure relief valve for a vacuum pump. The valve comprises a valve seat pressing cap, a valve seat, a valve ball, a valve cover and the vacuum pump, wherein the valve ball is arranged in the valve cover; the valve seat is arranged on an internal shoulder of the valve cover; the valve ball is positioned below the valve seat and matched with a valve port at the lower end of the valve seat; an external thread on the lower part of the valve seat pressing cap is connected with an internal thread on the upper part of the valve cover; the lower end face of the valve seat pressing cap presses the upper end face of the valve seat; the lower part of the valve cover is connected with the vacuum pump; and the inside of the valve cover is communicated with the vacuum pump. Internal pressure is increased when the vacuum pump works, the valve ball is matched with the valve port at the lower end of the valve seat, and the vacuum pump is provided with an automatic air exhaust device for exhausting air, so that negative pressure is formed in a test bottle, and the vacuum pump can normally work; and when the vacuum pump stops working, the air exhaust device of the vacuum pump is automatically closed, the negative pressure still exists in the vacuum pump, the valve ball falls and leaves the valve seat under the action of outside air pressure, so that internal and external pressure in the vacuum pump is balanced. By the valve, the pressure of the vacuum pump can be automatically relieved, the negative consequence caused by the reason that a worker misses the pressure relief process during manual operation can be avoided, and obvious economic benefits are achieved.
Description
Technical field
The utility model is the corollary equipment of measuring on the vacuum pump that wastewater suspended substance uses, and is a kind of vacuum pump Decompression valves.
Background technique
Employed (2XZ-1 type) vacuum pump in the chemical examination of mensuration wastewater suspended substance, in use essential pressure release after the termination of pumping, otherwise will be because being that negative pressure causes filter membrane to be adsorbed on bottleneck in the bottle, filter membrane is damaged, the accuracy of impact chemical examination, reduce chemical examination worker's working efficiency, increase the chemical examination cost.If the negative pressure in the in time pressure release, assay apparatus also can suck the lubricant oil in the pump in the assay apparatus, cause pollution and the waste of lubricant oil, affect the normal use of vacuum pump, shorten the working life of vacuum pump.Because this vacuum pump all is manual pressure release at present, the operator often can miss this operation and the problems referred to above occur, and produces economic loss.
Summary of the invention
The purpose of this utility model is a kind of vacuum pump Decompression valves of design, and making after its vacuum pump termination of pumping can releasing pressure automatically, avoids the problems referred to above to occur.
The purpose of this utility model is achieved in that and comprises valve seat pressure cap, valve seat, valve ball, valve bonnet, vacuum pump, valve ball is placed in the valve bonnet, valve seat is installed on the inner circular bead of valve bonnet, valve ball is under the valve seat, valve ball cooperates with valve seat lower end valve port, and valve seat pressure cap lower external thread is connected with the valve bonnet upper internal threaded, and the upper-end surface of valve seat is pushed down in valve seat pressure cap lower end surface, the valve bonnet bottom is connected with vacuum pump, and valve bonnet is inner to communicate with vacuum pump.
The beneficial effects of the utility model are: internal pressure raises during vacuum pump work, and valve ball cooperates with valve seat lower end valve port, and this moment, vacuum pump itself had an automatic exhaust device with Bas Discharged, makes in the chemical examination bottle and forms negative pressure, and vacuum pump can work.When vacuum pump quits work, the venting gas appliance autoshutdown of vacuum pump itself, interior or the negative pressure of vacuum pump, fall to lifting off a seat at extraneous gas pressure lower valve ball, internal and external pressure balance in the vacuum pump, the utility model can make the vacuum pump releasing pressure automatically, can avoid the manually-operable workman to miss the adverse consequences that the pressure release operation produces, and has significant economic benefit.
Description of drawings
Fig. 1 is erection drawing of the present utility model.
Embodiment
Below in conjunction with Fig. 1 embodiment of the present utility model is described.
As shown in the figure, embodiment of the present utility model comprises valve seat pressure cap 1, valve seat 2, valve ball 3, valve bonnet 4, vacuum pump 5, valve ball 3 is placed in the valve bonnet 4, valve seat 2 is installed on the inner circular bead of valve bonnet 4, valve ball 3 is under the valve seat 2, valve ball 3 cooperates with valve seat 2 lower end valve ports, valve seat pressure cap 1 lower external thread is connected with valve bonnet 4 upper internal threaded, the upper-end surface of valve seat 2 is pushed down in valve seat pressure cap 1 lower end surface, the both ends of the surface contacting point requires sealing, valve bonnet 4 bottoms are connected with vacuum pump 5, and valve bonnet 4 inside communicate with vacuum pump 5.Valve bonnet 4 is provided with linked hole, and linked hole is air-flow path, and the diameter of linked hole is significantly smaller than the diameter of valve ball 3, and valve ball 3 can not deviate from valve bonnet 4.
Claims (1)
1. vacuum pump Decompression valves, comprise valve seat pressure cap (1), valve seat (2), valve ball (3), valve bonnet (4), vacuum pump (5), it is characterized in that: valve ball (3) is placed in the valve bonnet (4), valve seat (2) is installed on the inner circular bead of valve bonnet (4), valve ball (3) is under the valve seat (2), valve ball (3) cooperates with valve seat (2) lower end valve port, valve seat pressure cap (1) lower external thread is connected with valve bonnet (4) upper internal threaded, the upper-end surface of valve seat (2) is pushed down in valve seat pressure cap (1) lower end surface, valve bonnet (4) bottom is connected with vacuum pump (5), and valve bonnet (4) is inner to communicate with vacuum pump (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220346454 CN202673631U (en) | 2012-07-10 | 2012-07-10 | Pressure relief valve for vacuum pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220346454 CN202673631U (en) | 2012-07-10 | 2012-07-10 | Pressure relief valve for vacuum pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202673631U true CN202673631U (en) | 2013-01-16 |
Family
ID=47494539
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220346454 Expired - Fee Related CN202673631U (en) | 2012-07-10 | 2012-07-10 | Pressure relief valve for vacuum pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202673631U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110870959A (en) * | 2019-12-06 | 2020-03-10 | 南阳市一通防爆电气有限公司 | Automatic exhaust type fire damper for positive pressure cabinet |
-
2012
- 2012-07-10 CN CN 201220346454 patent/CN202673631U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110870959A (en) * | 2019-12-06 | 2020-03-10 | 南阳市一通防爆电气有限公司 | Automatic exhaust type fire damper for positive pressure cabinet |
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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: 20130116 Termination date: 20130710 |