CN2322138Y - Air sampler - Google Patents
Air sampler Download PDFInfo
- Publication number
- CN2322138Y CN2322138Y CN 98203445 CN98203445U CN2322138Y CN 2322138 Y CN2322138 Y CN 2322138Y CN 98203445 CN98203445 CN 98203445 CN 98203445 U CN98203445 U CN 98203445U CN 2322138 Y CN2322138 Y CN 2322138Y
- Authority
- CN
- China
- Prior art keywords
- valve rod
- processed
- valve
- valve opening
- rod
- 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
Links
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- Sampling And Sample Adjustment (AREA)
Abstract
The utility model discloses an air sampler, belonging to an air testing tool which is matched with a testing tube. A valve hole and an air hole are processed on the front end cover of the utility model; a valve rod is arranged in the valve hole, and four sealing rings are orderly arranged on the valve rod from front to back; gaps are left between the valve rod and the valve hole which are between a first and a second sealing rings and a third and a fourth sealing rings; an air inlet hole is vertically processed on the front end of the valve rod, an air inlet hole is transversely processed on the valve rod between the first and the second sealing rings, and the transverse air inlet hole is communicated with the end of the vertical air inlet hole. The utility model has the advantages of favorable sealing performance, convenient operation and high safety.
Description
The utility model relates to a kind of gas sampler, belongs to and the supporting use testing tool of gas detecting tube.
At present the gas sampler that uses has suction-type and forced two kinds, the former can only measure on-the-spot the use, during use detector tube chewed with air inlet and link to each other, the pulling piston, gas pipe after testing enters cylinder, through detecting after a while, it uses inconvenience, and jeopardizes personal security when surveying harmful gas; The latter is unsuitable for activity gases such as sulfuretted hydrogen, sulphuric dioxide.Chinese patent 93243594 discloses a kind of automatic switch two mode sampling thiefs, and it has simultaneously and is pressed into and intake function, but its automatic valve leaks gas when pressure is low easily.
The purpose of this utility model is to overcome the deficiencies in the prior art and a kind of multifunctional sampling instrument is provided, and it not only has simultaneously and is pressed into and intake function, and gas production and sealing continuously, and good seal performance is air tight, safe and reliable.
The purpose of this utility model is achieved in that
It comprises cylinder, piston, piston rod, front end end cover, rear end cap, Connection Block and pressure cap, vertically be processed with valve opening on the front end end cover, the front end end cover central cross of valve opening front portion is processed with pore, communicate with valve opening, deflection valve rod front end laterally is processed with pore on the front end end cover at valve opening rear portion, communicate with valve opening: valve rod is installed in the valve opening, four O-ring seals are installed on the valve rod from front to back successively, leave the gap between the one the second O-ring seal and between valve rod between the three or four O-ring seal and valve opening, the valve rod front end vertically is processed with air admission hole, laterally is processed with air admission hole on the valve rod between the second O-ring seal, communicates with vertical air admission hole end.
Compared with prior art, advantage of the present utility model is easy to use, and is not only available forced, and also available suction-type work, and good seal performance are safe and reliable.
The explanation of accompanying drawing drawing:
The structural representation of the present utility model of accompanying drawing.
Below in conjunction with drawings and Examples in detail the utility model is described in detail.
The utility model comprises cylinder (2), piston (4), piston rod (3), front end end cover (3), rear end cap (1), Connection Block (9) and pressure cap (10), vertically be processed with valve opening (15) on the front end end cover (8), anterior front end end cover (8) central cross of valve opening (15) is processed with pore (12), communicate with valve opening (15), the front end end cover (8) at valve opening (15) rear portion is gone up deflection valve rod (7) front end and laterally is processed with pore (16), communicate with valve opening (15): valve rod (7) is installed in the valve opening (15), four O-ring seals (14) are installed on the valve rod (7) from front to back successively, between the one the second O-ring seal (14) and leave gap (13) between valve rod (7) between the three or four O-ring seal (14) and valve opening (15), valve rod (7) front end vertically is processed with air admission hole (6), valve rod (7) is gone up and laterally be processed with air admission hole (5) between the second O-ring seal (14), communicates with vertical air admission hole (6) end.
The utility model is when air-breathing, pulling valve rod (3), make the position that is in pore (16) between the one the second O-ring seals (14), pulling piston rod (3), gas is through air admission hole (6), gap (13), pore (16) enters cylinder (2), promote valve rod (7) then, O-ring seal (14) is shut pore (16), gas can be retained in the cylinder (7), during detection, detector tube is communicated with vent port (11), promote valve rod (7), make pore (16), (12) be in position between the three or four O-ring seal (14), promote piston rod (13), gas is then by pore (16), gap (13), pore (12), venthole (11) enters detector tube and detects.Also detector tube directly can be connected with valve rod (7) front end, make valve rod (7) be in above-mentioned position when air-breathing, pulling piston rod (3) is air-breathing, and gas detects when pipe enters cylinder (2) after testing when air-breathing.
Claims (1)
1, a kind of gas sampler comprises cylinder, piston, piston rod, front end end cover, rear end cap, and Connection Block and pressure cap is characterized in that:
Vertically be processed with valve opening on a, the front end end cover, the front end end cover central cross of valve opening front portion is processed with pore, communicates with valve opening, and deflection valve rod front end laterally is processed with pore on the front end end cover at valve opening rear portion, communicates with valve opening;
Valve rod is installed in b, the valve opening, four O-ring seals are installed on the valve rod from front to back successively, leave the gap between the one the second O-ring seal and between valve rod between the 4th O-ring seal of the 3rd joint and valve opening, the valve rod front end vertically is processed with air admission hole, between the second O-ring seal, laterally be processed with air admission hole on the valve rod, communicate with vertical air admission hole end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98203445 CN2322138Y (en) | 1997-12-12 | 1998-04-15 | Air sampler |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN972304312 | 1997-12-12 | ||
| CN97230431 | 1997-12-12 | ||
| CN 98203445 CN2322138Y (en) | 1997-12-12 | 1998-04-15 | Air sampler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2322138Y true CN2322138Y (en) | 1999-06-02 |
Family
ID=34065892
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98203445 Expired - Fee Related CN2322138Y (en) | 1997-12-12 | 1998-04-15 | Air sampler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2322138Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101995347A (en) * | 2010-11-02 | 2011-03-30 | 北京市劳动保护科学研究所 | Gas sampling device by adopting lever structure |
| CN101587109B (en) * | 2008-05-19 | 2012-10-03 | 株式会社日立高新技术 | Determination method and intruments of hexavalent chromium |
| CN103884542A (en) * | 2012-12-21 | 2014-06-25 | 上海磐合科学仪器股份有限公司 | Gas sampling bag |
-
1998
- 1998-04-15 CN CN 98203445 patent/CN2322138Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101587109B (en) * | 2008-05-19 | 2012-10-03 | 株式会社日立高新技术 | Determination method and intruments of hexavalent chromium |
| CN101995347A (en) * | 2010-11-02 | 2011-03-30 | 北京市劳动保护科学研究所 | Gas sampling device by adopting lever structure |
| CN103884542A (en) * | 2012-12-21 | 2014-06-25 | 上海磐合科学仪器股份有限公司 | Gas sampling bag |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |