CN103962342A - Diaphragm purging chip separation mechanism of gas chromatograph - Google Patents
Diaphragm purging chip separation mechanism of gas chromatograph Download PDFInfo
- Publication number
- CN103962342A CN103962342A CN201410187090.XA CN201410187090A CN103962342A CN 103962342 A CN103962342 A CN 103962342A CN 201410187090 A CN201410187090 A CN 201410187090A CN 103962342 A CN103962342 A CN 103962342A
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- CN
- China
- Prior art keywords
- chip
- collecting pond
- gas
- outlet
- scrap collecting
- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B5/00—Cleaning by methods involving the use of air flow or gas flow
- B08B5/02—Cleaning by the force of jets, e.g. blowing-out cavities
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
- B08B15/04—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area from a small area, e.g. a tool
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/04—Preparation or injection of sample to be analysed
- G01N30/16—Injection
- G01N30/18—Injection using a septum or microsyringe
Abstract
A diaphragm purging chip separation mechanism of a gas chromatograph comprises a sample injector and a chip separation and collecting device. A diaphragm purging gas circuit of the sample injector is connected with a purging gas flow control system. The chip separation and collecting device comprises a device body and a chip filter screen. A chip collecting pond, a gas inlet channel and a gas outlet channel are arranged in the device body. The circulating area of the gas inlet channel and the circulating area of the gas outlet channel are far smaller than the circulating area of the chip collecting pond. The chip collecting pond is provided with a chip removal opening. A detachable cover plate is arranged on the chip removal opening. The inlet of the gas inlet channel is connected with the outlet of the diaphragm purging gas circuit. The outlet of the gas inlet channel is located on the upper portion of the chip collecting pond. The gas inlet of the gas outlet channel is located in the top wall of the chip collecting pond, and the outlet of the gas outlet channel is connected with the purging gas flow control system. The chip filter screen is arranged on the inlet or the outlet of the gas outlet channel in a blocking mode. The diaphragm purging chip separation mechanism has the advantages of guaranteeing control stability of purging gas, prolonging the service life of a mechanical valve or a proportional electromagnetic valve, being capable of reused, and achieving environment friendliness.
Description
Technical field
The present invention relates to gas chromatograph field, relate in particular to a kind of gas chromatograph barrier film and purge chip separating mechanism.
Background technology
Gas chromatograph is in long-term use, and due to sample introduction repeatedly, the diaphragm bushing of injector is easily destroyed, produces chip and comes off.For the chip that prevents from coming off enters chromatographic column with carrier gas, impact analysis is used, and has increased barrier film and purge function in Injector design, is intended to chip to blow out injector.
Meanwhile, gas chromatograph has special flow of purge gas amount control system, and for controlling the flow of purge gas, it consists of mechanical valve/proportion magnetic valve and flow sensor/pressure sensor.Limited by injector structure, mechanical valve/proportion magnetic valve can only be arranged on and purge exit, after the long-term purging of result, the chip coming off can be accumulated in the air inlet of each mechanical valve or proportion magnetic valve, even enter valve body, cause the destruction of valve, affected the stability of purge gas, also affected the service life of valve.
Summary of the invention
Based on this, for above-mentioned technical problem, provide a kind of gas chromatograph barrier film to purge chip separating mechanism.
For solving the problems of the technologies described above, the present invention adopts following technical scheme:
A kind of gas chromatograph barrier film purges chip separating mechanism, it is characterized in that, comprise injector and chip isolation gathering-device, the barrier film of described injector purges gas circuit and is connected with flow of purge gas amount control system, described chip isolation gathering-device comprises device body and chip screen pack, in described device body, there is scrap collecting pond, inlet channel and outlet passageway, the circulation area of described inlet channel and outlet passageway is much smaller than the circulation area in described scrap collecting pond, described scrap collecting pond has chip removal mouth, this chip removal mouth place is provided with dismountable cover plate, the entrance of described inlet channel is connected with the outlet that described barrier film purges gas circuit, the outlet of this inlet channel is positioned at the top in described scrap collecting pond, the air intake of described outlet passageway is positioned on the roof in described scrap collecting pond, its outlet is connected with flow of purge gas amount control system, described chip screen pack gear is located at porch or the exit of described outlet passageway.
Described inlet channel and outlet passageway adopt φ 1mm through hole, and its sectional area is 0.785mm
2, described scrap collecting pond adopts φ 5mm cavity, and minimum sectional area is 19.6255mm
2.
Described inlet channel is horizontal channel, and its outlet is positioned on the sidewall on top, described scrap collecting pond.
The outlet of described inlet channel is positioned on the roof on top, described scrap collecting pond.
Described chip removal mouth is annular notch, is provided with sealing ring in it, and described cover plate is dismountable to be covered on outside described notch.
Described chip removal mouth is positioned at the bottom in described scrap collecting pond, and described chip screen pack gear is located at the porch of described outlet passageway.
Described chip removal mouth is positioned at the side in described scrap collecting pond, and described chip screen pack gear is located at the exit of described outlet passageway.
The present invention can collect barrier film chip automatically, purifies barrier film and purges and control gas circuit, has the control stability that ensures purge gas, in the service life of prolonged mechanical valve/proportion magnetic valve, can reuse the advantage of environmental protection more.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is elaborated:
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of the chip isolation gathering-device of one embodiment of the invention;
Fig. 3 is the structural representation of the chip isolation gathering-device of another embodiment of the present invention.
The specific embodiment
As shown in Figure 1, gas chromatograph barrier film purges chip separating mechanism, comprises injector 1100, flow of purge gas amount control system 1200 and chip isolation gathering-device 1300.
Injector 1100 is for sample introduction to chromatographic column 1400, and its barrier film purges gas circuit and is connected with flow of purge gas amount control system 1200.
Flow of purge gas amount control system 1200 consists of mechanical valve/proportion magnetic valve 1210 and flow sensor/pressure sensor 1220, for controlling the flow of purge gas.
As shown in FIG. 2 and 3, chip isolation gathering-device 1300 comprises device body 1310 and chip screen pack 1320.
In device body 1310, there is scrap collecting pond 1311, inlet channel 1312 and outlet passageway 1313.
Scrap collecting pond 1311 has chip removal mouth, and this chip removal mouth place is provided with dismountable cover plate 1314.
Particularly, chip removal mouth is annular notch, is provided with sealing ring 1315 in it, and cover plate 1314 is covered on outside notch by screw is dismountable.
The design of chip removal mouth can be regularly the manual chip in cleared of debris collecting pit 1311, make scrap collecting pond 1311 can automatically collect for a long time barrier film chip.
The entrance of inlet channel 1312 is connected with the outlet that barrier film purges gas circuit, the outlet of this inlet channel 1312 is positioned at the top in scrap collecting pond 1311, the air intake of outlet passageway 1313 is positioned on the roof in scrap collecting pond 1311, its outlet is connected with flow of purge gas amount control system 1200, and chip screen pack 1320 gears are located at porch or the exit of outlet passageway 1313.
When gas chromatograph uses for a long time, because sample introduction has repeatedly destroyed the diaphragm bushing in injector 1100, its chip producing that comes off is taken in the inlet channel 1312 of chip isolation gathering-device 1300 by purge gas, and then enter in scrap collecting pond 1311, because the effect chip of gravity can be fallen into the bottom in scrap collecting pond 1311, simultaneously again due to the obstruct of chip screen pack 1320, chip cannot be in outlet passageway 1313 enters the valve body of flow of purge gas amount control system 1200, realized automatic collection barrier film chip, purify barrier film and purge control gas circuit, there is the control stability that ensures purge gas, the service life of prolonged mechanical valve/proportion magnetic valve, can reuse the advantage of environmental protection more.
The circulation area of inlet channel 1312 and outlet passageway 1313 is much smaller than the circulation area in scrap collecting pond 1311, circulation area refers to that gas flow crosses the area of plane, when such design makes purge gas enter scrap collecting pond 1311 from inlet channel 1312, its linear rate of flow will reduce, thereby what make that chip can be stable falls in scrap collecting pond 1311, and flow velocity can not interfere with the chip at the bottom of pond yet slowly, in like manner, the circulation area of outlet passageway 1313 is less than the circulation area in scrap collecting pond 1311, has also facilitated the discharge of gas.
Particularly, inlet channel 1312 and outlet passageway 1313 adopt φ 1mm through hole, and its sectional area is 0.785mm
2, scrap collecting pond 1311 adopts φ 5mm cavity, and minimum sectional area is 19.6255mm
2.
As shown in Figure 2, in a preferred embodiment, inlet channel 1312 is horizontal channel, its outlet is positioned on the sidewall on 1311 tops, scrap collecting pond, being convenient to purge gas brings chip in scrap collecting pond 1311 into, and the chip removal mouth in scrap collecting pond 1311 is positioned at the bottom in this scrap collecting pond 1311, chip screen pack 1320 gears are located at the porch of outlet passageway 1313.
As shown in Figure 3, in another preferred embodiment, inlet channel 1312 is horizontal channel, its outlet is positioned on the sidewall on 1311 tops, scrap collecting pond, being convenient to purge gas brings chip in scrap collecting pond 1311 into, and the chip removal mouth in scrap collecting pond 1311 is positioned at the side in scrap collecting pond 1311, chip screen pack 1320 gears are located at the exit of outlet passageway 1313.
Be understandable that, the outlet of inlet channel 1312 also can be positioned on the roof on top, scrap collecting pond.
But, those of ordinary skill in the art will be appreciated that, above embodiment is only for the present invention is described, and be not used as limitation of the invention, as long as within the scope of connotation of the present invention, to the variation of the above embodiment, modification, all will drop within the scope of claims of the present invention.
Claims (7)
1. a gas chromatograph barrier film purges chip separating mechanism, it is characterized in that, comprise injector and chip isolation gathering-device, the barrier film of described injector purges gas circuit and is connected with flow of purge gas amount control system, described chip isolation gathering-device comprises device body and chip screen pack, in described device body, there is scrap collecting pond, inlet channel and outlet passageway, the circulation area of described inlet channel and outlet passageway is much smaller than the circulation area in described scrap collecting pond, described scrap collecting pond has chip removal mouth, this chip removal mouth place is provided with dismountable cover plate, the entrance of described inlet channel is connected with the outlet that described barrier film purges gas circuit, the outlet of this inlet channel is positioned at the top in described scrap collecting pond, the air intake of described outlet passageway is positioned on the roof in described scrap collecting pond, its outlet is connected with flow of purge gas amount control system, described chip screen pack gear is located at porch or the exit of described outlet passageway.
2. a kind of gas chromatograph barrier film according to claim 1 purges chip separating mechanism, it is characterized in that, described inlet channel and outlet passageway adopt φ 1mm through hole, and its sectional area is 0.785mm
2, described scrap collecting pond adopts φ 5mm cavity, and minimum sectional area is 19.6255mm
2.
3. a kind of gas chromatograph barrier film according to claim 2 purges chip separating mechanism, it is characterized in that, described inlet channel is horizontal channel, and its outlet is positioned on the sidewall on top, described scrap collecting pond.
4. a kind of gas chromatograph barrier film according to claim 2 purges chip separating mechanism, it is characterized in that, the outlet of described inlet channel is positioned on the roof on top, described scrap collecting pond.
5. according to a kind of gas chromatograph barrier film described in claim 3 or 4, purge chip separating mechanism, it is characterized in that, described chip removal mouth is annular notch, is provided with sealing ring in it, and described cover plate is dismountable to be covered on outside described notch.
6. a kind of gas chromatograph barrier film according to claim 5 purges chip separating mechanism, it is characterized in that, described chip removal mouth is positioned at the bottom in described scrap collecting pond, and described chip screen pack gear is located at the porch of described outlet passageway.
7. a kind of gas chromatograph barrier film according to claim 6 purges chip separating mechanism, it is characterized in that, described chip removal mouth is positioned at the side in described scrap collecting pond, and described chip screen pack gear is located at the exit of described outlet passageway.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410187090.XA CN103962342B (en) | 2014-05-06 | 2014-05-06 | Gas chromatograph with diaphragm purging chip separation mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410187090.XA CN103962342B (en) | 2014-05-06 | 2014-05-06 | Gas chromatograph with diaphragm purging chip separation mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103962342A true CN103962342A (en) | 2014-08-06 |
| CN103962342B CN103962342B (en) | 2017-02-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410187090.XA Active CN103962342B (en) | 2014-05-06 | 2014-05-06 | Gas chromatograph with diaphragm purging chip separation mechanism |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU868584A1 (en) * | 1980-01-16 | 1981-09-30 | Всесоюзный Научно-Исследовательский И Проектно-Конструкторский Институт Комплексной Автоматизации Нефтяной И Газовой Промышленности | Impurity concentrator for gas chromatograph |
| CN2805885Y (en) * | 2005-05-27 | 2006-08-16 | 张家港市金帆电源有限公司 | Dust filter device for vacuum duct of automatic pole piece weighing machine |
| CN101831690A (en) * | 2010-05-31 | 2010-09-15 | 常州亿晶光电科技有限公司 | Primary dust suction and storage tank of crystal pulling furnace |
| CN202471665U (en) * | 2012-01-31 | 2012-10-03 | 上海天美科学仪器有限公司 | Power-off protection device for gas chromatograph |
| JP2013124673A (en) * | 2011-12-13 | 2013-06-24 | Shimadzu Corp | Flow rate control mechanism and gas chromatograph equipped with the same |
-
2014
- 2014-05-06 CN CN201410187090.XA patent/CN103962342B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU868584A1 (en) * | 1980-01-16 | 1981-09-30 | Всесоюзный Научно-Исследовательский И Проектно-Конструкторский Институт Комплексной Автоматизации Нефтяной И Газовой Промышленности | Impurity concentrator for gas chromatograph |
| CN2805885Y (en) * | 2005-05-27 | 2006-08-16 | 张家港市金帆电源有限公司 | Dust filter device for vacuum duct of automatic pole piece weighing machine |
| CN101831690A (en) * | 2010-05-31 | 2010-09-15 | 常州亿晶光电科技有限公司 | Primary dust suction and storage tank of crystal pulling furnace |
| JP2013124673A (en) * | 2011-12-13 | 2013-06-24 | Shimadzu Corp | Flow rate control mechanism and gas chromatograph equipped with the same |
| CN202471665U (en) * | 2012-01-31 | 2012-10-03 | 上海天美科学仪器有限公司 | Power-off protection device for gas chromatograph |
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| Publication number | Publication date |
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| CN103962342B (en) | 2017-02-15 |
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