CN202176494U - Diaphragm sampling pump - Google Patents
Diaphragm sampling pump Download PDFInfo
- Publication number
- CN202176494U CN202176494U CN2011201980969U CN201120198096U CN202176494U CN 202176494 U CN202176494 U CN 202176494U CN 2011201980969 U CN2011201980969 U CN 2011201980969U CN 201120198096 U CN201120198096 U CN 201120198096U CN 202176494 U CN202176494 U CN 202176494U
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- CN
- China
- Prior art keywords
- hole
- pump
- diameter
- shroud
- cover board
- 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 - Lifetime
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Abstract
The utility model relates to a diaphragm sampling pump. The side wall of a pump seat is fixedly provided with a rear cover board. A front cover board is fixed on the side wall of the rear cover board. The rear cover board is provided with a gas source and a sampling joint pipe. A pump diaphragm is arranged between the rear cover board and the front cover board. The rear cover board is provided with a first rear through hole and a second rear through hole. The front cover board is provided with a first front through hole and a second front through hole. A bowl-shaped leather sheath is sleeved outside the front and rear cover boards in a sealed mode. The bowl-shaped leather sheath and the front cover board are surrounded into a communication cavity. A swing arm is hinged on the pump seat. The diameter of the rear end part of the first front through hole is greater than the diameter of the front end part of the first rear through hole. The diameter of the rear end part of the second front through hole is less than the diameter of the front end part of the second rear through hole. The width of the pump diaphragm at the rear end part of the first front through hole is slightly greater than the diameter of the rear end part of the first front through hole. The width of the pump diaphragm at the front end part of the second rear through hole is slightly greater than the diameter of the front end part of the second rear through hole. When the diaphragm sampling pump is in use, sampled gas cannot be polluted and electric sparks cannot be generated. The diaphragm sampling pump can be used in an explosion-proof danger region.
Description
Technical field
The utility model relates to a kind of sampling apparatus of long-range pipeline gas, especially a kind of barrier film gas samping pump.
Background technique
Current a lot of oil, chemical industry; For the safety of producing, all in that being installed, gas leakage surveys instrument, but some emphasis check point, safe place; Personnel can't reach, instrument can't be installed; Such as oil tank slit, the medium place of trench, apparatus of the present invention can be delivered to detected gas in the measuring instrument fast fast and analyze, handle, and make the staff monitor test environment away from the hazardous location and take necessary emergency measure.
Summary of the invention
The purpose of the utility model is to overcome the deficiency that exists in the existing technology, provide a kind of can contamination sampling gas, the sampling Safety performance is high, can use the barrier film gas samping pump in explosion-proof deathtrap.
According to the technological scheme that the utility model provides, said barrier film gas samping pump is included in hard-wired back shroud on the sidewall of pump seat; Sidewall at back shroud is installed with front shroud, and gas source interface pipe and sampling mouthpiece are installed on back shroud, between back shroud and front shroud, is provided with pump diaphragm; On back shroud, offer the first back through hole and the second back through hole; The gas source interface pipe and the first back through hole are communicated with, the sampling mouthpiece with second afterwards through hole be communicated with, on front shroud, offer first before the through hole and the second preceding through hole; Through hole is communicated with the first back through hole selectivity before first, and the second preceding through hole and the second back through hole selectivity are communicated with; Be connected to bowl-shape leather sheath at back shroud and front shroud outer seal sleeve, bowl-shape leather sheath and front shroud surround communicated cavity, on pump seat, are hinged with swing arm, and swing arm links to each other with bowl-shape leather sheath; And the rearward end diameter of through hole is greater than the front end diameter of the first back through hole before first, and the rearward end diameter of the second preceding through hole is less than the front end diameter of the second back through hole; The pump diaphragm width of through hole back-end portion is slightly larger than the diameter of through hole back-end portion before first before first, is slightly larger than the diameter of the second back through hole front end at the pump diaphragm width of the second back through hole front end.
Bottom in swing arm is equipped with magnet piece.Between pump seat and back shroud, be provided with packing ring.
The utility model is compared with the traditional sampling device, and it has overcome in the conventional apparatus pump housing will use oil lubrication, and lubricant oil volatilizees easily, and sample gas is polluted, and can influence the judgement of back surface detector instrument.Device of the present invention, it adopts the device of diaphragm can not produce volatilization.Apparatus of the present invention are to-and-fro motion under the effect of electromagnetic force, can not produce electrical spark, can use in explosion-proof deathtrap.
Description of drawings
Fig. 1 is the overall structure schematic representation of the utility model.
Embodiment
Below in conjunction with concrete accompanying drawing and embodiment the utility model is described further.
As shown in the figure: this barrier film gas samping pump; Be included in hard-wired back shroud 7 on the sidewall of pump seat 1; Sidewall at back shroud 7 is installed with front shroud 4, and gas source interface pipe 10 and sampling mouthpiece 11 are installed on back shroud 7, between back shroud 7 and front shroud 4, is provided with pump diaphragm 5; On back shroud 7, offer the first back through hole 7.1 and the second back through hole 7.2; The gas source interface pipe 10 and the first back through hole 7.1 are communicated with, sampling mouthpiece 11 with second afterwards through hole 7.2 be communicated with, on front shroud 4, offer first before the through hole 4.1 and the second preceding through hole 4.2; Through hole 4.1 is communicated with first back through hole 7.1 selectivity before first, and the second preceding through hole 4.2 and second back through hole 7.2 selectivity are communicated with; Outside back shroud 7 and front shroud 4, be connected to bowl-shape leather sheath 3 through band 6 stuffing box glands, bowl-shape leather sheath 3 surrounds communicated cavity 12 with front shroud 4, on pump seat 1, is hinged with swing arm 2, and swing arm 2 links to each other with bowl-shape leather sheath 3; And the rearward end diameter of through hole 4.1 is greater than the front end diameter of the first back through hole 7.1 before first, and the rearward end diameter of the second preceding through hole 4.2 is less than the front end diameter of the second back through hole 7.2; Pump diaphragm 5 width of through hole 4.1 rearward end are slightly larger than the diameter of through hole 4.1 rearward end before first before first, are slightly larger than the diameter of second back through hole 7.2 front ends at pump diaphragm 5 width of second back through hole 7.2 front ends.
In the bottom of swing arm 2 magnet piece 13 is installed, the swing arm 2 that adds magnet piece 13 under the electromagnetic field effect that constantly changes, swing.Between pump seat 1 and back shroud 7, be provided with packing ring 8.
Be slightly larger than the diameter of second back through hole 7.2 front ends at pump diaphragm 5 width of second back through hole 7.2 front ends; Make when swing arm 2 is swung backward; Pump diaphragm 5 deformation are also projecting inward to second back through hole 7.2 front ends, can be communicated with between the second preceding through hole 4.2 and the second back through hole 7.2; When swing arm 2 was swung forward, pump diaphragm 5 deformation partly recovered to make and are not communicated with between the second preceding through hole 4.2 and the second back through hole 7.2.
During work; Gas source interface pipe 10 inserts gas source pipe, and sampling mouthpiece 11 inserts sampling conduit, when swing arm 2 is swung forward; It is big that communicated cavity 12 spaces become; Air pressure reduces, make pump diaphragm 5 deformation and to first before through hole 4.1 rearward end projecting inward, through hole 4.1 and first afterwards is communicated with between the through hole 7.1 before first; And be not communicated with between the second preceding through hole 4.2 and the second back through hole 7.2, this moment, source of the gas gas can get in the communicated cavitys 12 through gas source interface pipe 10, the first back through hole, 7.1, the first preceding through hole 4.1; When making that swing arm 2 is swung backward; Communicated cavity 12 spaces diminish, and air pressure falls greatly, make pump diaphragm 5 deformation and projecting inward to second back through hole 7.2 front ends; Be communicated with between the through hole 7.2 behind the through hole 4.2 and second before second; And through hole 4.1 is not communicated with between the through hole 7.1 with first back before first, and the gas that gets into communicated cavity 12 gets in the sampling mouthpieces 11 the realization gas sampling through through hole 4.2, the second back through hole 7.2 before second.
Claims (3)
1. barrier film gas samping pump; It is characterized in that: be included in hard-wired back shroud (7) on the sidewall of pump seat (1); Sidewall at back shroud (7) is installed with front shroud (4); Gas source interface pipe (10) and sampling mouthpiece (11) are installed on back shroud (7); Between back shroud (7) and front shroud (4), be provided with pump diaphragm (5), on back shroud (7), offer the first back through hole (7.1) and the second back through hole (7.2), gas source interface pipe (10) is communicated with the first back through hole (7.1); Sampling mouthpiece (11) is communicated with the second back through hole (7.2); Through hole (4.2) before the through hole (4.1) and second before on front shroud (4), offering first, the first preceding through hole (4.1) and first back through hole (7.1) selectivity are communicated with, and the second preceding through hole (4.2) is communicated with second back through hole (7.2) selectivity; Be connected to bowl-shape leather sheath (3) at back shroud (7) and front shroud (4) outer seal sleeve, bowl-shape leather sheath (3) surrounds communicated cavity (12) with front shroud (4), on pump seat (1), is hinged with swing arm (2), and swing arm (2) links to each other with bowl-shape leather sheath (3); And the rearward end diameter of through hole (4.1) is greater than the front end diameter of the first back through hole (7.1) before first, and the rearward end diameter of the second preceding through hole (4.2) is less than the front end diameter of the second back through hole (7.2); Pump diaphragm (5) width of through hole before first (4.1) rearward end is slightly larger than the diameter of through hole (4.1) rearward end before first, is slightly larger than the diameter of second back through hole (7.2) front end at pump diaphragm (5) width of second back through hole (7.2) front end.
2. barrier film gas samping pump as claimed in claim 1 is characterized in that: in the bottom of swing arm (2) magnet piece (13) is installed.
3. barrier film gas samping pump as claimed in claim 1 is characterized in that: between pump seat (1) and back shroud (7), be provided with packing ring (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201980969U CN202176494U (en) | 2011-06-13 | 2011-06-13 | Diaphragm sampling pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201980969U CN202176494U (en) | 2011-06-13 | 2011-06-13 | Diaphragm sampling pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202176494U true CN202176494U (en) | 2012-03-28 |
Family
ID=45866377
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201980969U Expired - Lifetime CN202176494U (en) | 2011-06-13 | 2011-06-13 | Diaphragm sampling pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202176494U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102213211A (en) * | 2011-06-13 | 2011-10-12 | 无锡格林通安全装备有限公司 | Gas-sampling diaphragm pump |
| CN105424422A (en) * | 2015-11-20 | 2016-03-23 | 广东伟创科技开发有限公司 | Continuous flue gas monitoring and sampling device |
-
2011
- 2011-06-13 CN CN2011201980969U patent/CN202176494U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102213211A (en) * | 2011-06-13 | 2011-10-12 | 无锡格林通安全装备有限公司 | Gas-sampling diaphragm pump |
| CN105424422A (en) * | 2015-11-20 | 2016-03-23 | 广东伟创科技开发有限公司 | Continuous flue gas monitoring and sampling device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120328 |
|
| CX01 | Expiry of patent term |