CN201543626U - Capillary tube cleaning device - Google Patents
Capillary tube cleaning device Download PDFInfo
- Publication number
- CN201543626U CN201543626U CN2009202119679U CN200920211967U CN201543626U CN 201543626 U CN201543626 U CN 201543626U CN 2009202119679 U CN2009202119679 U CN 2009202119679U CN 200920211967 U CN200920211967 U CN 200920211967U CN 201543626 U CN201543626 U CN 201543626U
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- capillary
- piston pump
- reciprocating piston
- valve
- cleaning
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Abstract
A capillary tube cleaning device comprises an open-mouth cleaning solution cup, a reciprocating piston pump and three-way reversing valves, wherein the three-way reversing valves are arranged among the cleaning solution cup, the reciprocating piston pump and the capillary tube; valve ports of the three-way reversing valves are respectively connected with the cell of the reciprocating piston pump, the cleaning solution cup and the capillary tube in a no-leakage manner; the three-way reversing valve are provided with two operating positions, and can communicate the cell of the reciprocating piston pump and the cleaning solution cup, or communicate the cell of the reciprocating piston pump and the capillary tube selectively. The capillary tube cleaning device can be used without additional pressure gas, an electromagnetic valve, an adjusting valve, and a cleaning solution container with favorable leak tightness and high pressure resistance, and has the advantages of simple structure, convenient reformation, and low maintenance cost.
Description
Technical field
The utility model relates to capillary, relates in particular to a kind of automatic sampler cleaning device capillaceous.
Background technology
Modern GFAAS has become the important method that micro-example analysis and trace, ultratrace element detect.Sampling Graphite Furnace Atomicization is occupied very consequence in atomic absorption spectroscopy, when using atomic absorption spectrophotometer that the concentration of sample solution is measured, the volumetric errors of institute's sample thief directly has influence on precision of measurement.Generally, can use have automatic sampler capillaceous by volume required draw samples to reach higher precision.
But, after having extracted a kind of sample, if when continue using the capillary of having used to extract the variable concentrations sample, capillary might cross pollution, thereby make measured value can't reflect real sample solution concentration, must clean capillary before therefore each draw samples.At present, what cleaning method capillaceous generally adopted in the automatic sampler is pneumatic process: utilize pressed gas that cleaning fluid is extruded from container and flow through capillary, thereby reach the cleaning purpose.The air pressure ablution requires additionally to provide magnetic valve, the pressure regulator valve of pressed gas and controlled pressure gas, the apparatus structure complexity, and high to air-tightness, the barotolerance requirement of soda liquor container, need often maintain, change, the cost that device is safeguarded is higher.
The utility model content
Technical problem to be solved in the utility model is to provide a kind of automatic sampler capillary that is used to clean, additionally working pressure gas and corresponding control device, need not the device of high pressure resistant soda liquor container.
The utility model is achieved through the following technical solutions:
A kind of capillary cleaning device, it is characterized in that: described device comprises uncovered cleaning fluid cup, reciprocating piston pump and three-way diverter valve, three-way diverter valve is arranged between cleaning fluid cup, reciprocating piston pump and the capillary, its valve port is connected with working chamber, cleaning fluid cup and the capillary ne-leakage of reciprocating piston pump respectively, three-way diverter valve has two operating positions, can select the working chamber of reciprocating piston pump to be connected with the cleaning fluid cup, perhaps the working chamber of reciprocating piston pump is connected with capillary.
Wherein, reciprocating piston pump is the sampling dynamical element that automatic sampler carries, and utilizes reciprocating piston pump sample extraction can be gone in the capillary, and after this mobile capillary utilizes reciprocating piston pump will inhale sample again and releases capillary to the application of sample mouth, can finish application of sample.Sampling and during application of sample, the operating position at three-way diverter valve place only is connected the working chamber of reciprocating piston pump with capillary, with guarantee to take a sample, application of sample is abundant.During cleaning, three-way diverter valve changes the operating position, the working chamber of reciprocating piston pump is connected with the cleaning fluid cup, utilize reciprocating piston pump the cleaning fluid in the uncovered cleaning fluid cup to be sucked the working chamber of reciprocating piston pump, three-way diverter valve is returned to the position that the working chamber of reciprocating piston pump is connected with capillary then, reciprocating piston pump is to the pressurization of the cleaning fluid in the suction chamber, and pressurized washing liquid sprays from capillary, finishes cleaning capillaceous.
Utilize the cleaning fluid under the negative pressure suction normal pressure, need not extra pressed gas, suction power and temporary container can utilize the sampling power and the related device of existing automatic sampler to realize, and owing to need not high voltage bearing soda liquor container, cleaning device can further be simplified, and cleans cost thereby reduce.
Generally, graphite furnace automatic sampler length capillaceous is generally 500～800mm, internal diameter is 0.5mm, therefore its volume is about about 0.1ml,, for guaranteeing cleaning performance, being pumped in the reciprocating piston pump during each the cleaning, being used to clean cleaning fluid volume capillaceous is 0.3～0.8ml, during cleaning, because the promotion of piston, the cleaning fluid of suction can all be discharged from capillary, can not remain in the capillary.
In addition, the dynamics of washing away when cleaning, reach cleaning performance preferably, the cleaning pressure of reciprocating piston pump is preferably 0.2Mpa.
Further, three-way diverter valve can be solenoid directional control valve, electro-hydraulic reversing valve or motor-driven reversal valve, considers arrangement convenience, compact conformation on existing equipment, preferably adopts solenoid directional control valve.
For do not change the existing layout of automatic sampler as far as possible, be beneficial to replacing to existing cleaning device, a kind of preferred cleaning device arrangement is: solenoid directional control valve is " ⊥ " shape and arranges, wherein, the valve port that solenoid directional control valve makes progress communicates with reciprocating piston pump, and two following valve ports communicate with capillary and cleaning fluid cup respectively.
Further, be the automation that realizes cleaning, can be with three-way diverter valve, reciprocating piston pump, capillary all by motor-driven, so that under uncared for situation by control system control, the graphite furnace automatic sampler still can be realized taking a sample automatically, cleaning under the control of control system.
In addition, consider capillary after some sample is taken a sample, could thoroughly clean through repeatedly washing away possibly that it is adjustable therefore can being set in interior wash number of each cleaning frequency, when needs repeatedly clean, can select suitable wash number.
The beneficial effects of the utility model are:
1. additionally working pressure gas, magnetic valve, pressure regulator valve of this device, device simple in structure;
2. this device does not need the good and high voltage bearing soda liquor container of sealing, just can realize cleaning capillaceous, and the cost of device maintaining is low;
3. this device sampling dynamical element of having utilized automatic sampler to carry is realized cleaning function, and it is convenient to transform, and improvement cost is low.
4. the wash number of this device is adjustable, can select suitable wash number as required.
Description of drawings
The apparatus structure schematic diagram that Fig. 1 cleans for existing pneumatic process
Fig. 2 is the utility model cleaning device working state schematic representation when suck purge liquid
Fig. 3 is the utility model cleaning device working state schematic representation when the flushing capillary
In Fig. 1～3: 1 is capillary, and 2 is motor, and 3 is reciprocating piston pump, 4 is three-way connection, and 5 is magnetic valve, and 6 is pressure regulator valve, 7 is control system, 8 is the pressed gas producing component, and 9 is sealed high pressure cleaning fluid bottle, and 10 is the application of sample mouth, 11 is service sink, 12 is specimen cup, and 13 is the cleaning fluid cup, and 14 is three-way diverter valve.
The specific embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
In Fig. 1～3, capillary 1 is driven, can be moved around and lifting between specimen cup 12, service sink 11 and application of sample mouth 10 by the motor 2 of control system 7 controls.The piston of reciprocating piston pump 3 is driven by the motor 2 of control system 7 control and moves reciprocatingly, can be capillary 1 in, promptly inhale sample sample extraction, or release capillary 1, be application of sample.
Existing pneumatic process is cleaned device capillaceous and is comprised sealed high pressure cleaning fluid bottle 9, magnetic valve 5, pressure regulator valve 6, pressed gas producing component 8 and three-way connection 4, during sampling, closes magnetic valve 5, pressure regulator valve 6, and the push-and-pull campaign of reciprocating pump 3 pistons can be inhaled sample and application of sample.Behind the application of sample, open magnetic valve 5, pressure regulator valve 6, pressed gas producing component 8 produces gases at high pressure, cleaning fluid is extruded and flows through capillary 1 to reach the cleaning purpose from sealed high pressure cleaning fluid bottle 9, during cleaning, because the piston of reciprocating piston pump 3 keeps motionless under motor 2 controls, therefore cleaning fluid can not escape in the working chamber of reciprocating pump 3, as shown in Figure 1.
Fig. 2～3 are a kind of preferred arrangements structure chart of the utility model cleaning device, when inhaling sample and application of sample, the operating position at three-way diverter valve place only is connected the working chamber of reciprocating piston pump 3 with capillary 1, when the piston of reciprocating pump 3 spurred, sample just sucked in the capillary 1.Then capillary 1 is moved on to application of sample mouth 10, promote the piston of reciprocating pump 3, sample promptly is pushed out and is added in the application of sample mouth 10 from capillary 1.Owing in the capillary 1 last time sample may residually be arranged, so before inhaling sample next time, must clean capillary 1: capillary 1 is moved on to service sink, as shown in Figure 2, three-way diverter valve 14 is driven by the motor 2 of control system 7 controls, the working chamber of reciprocating piston pump 3 is connected with cleaning fluid cup 13, utilizes reciprocating piston pump 3 cleaning fluid in the uncovered cleaning fluid cup 13 to be sucked the working chamber of reciprocating piston pump 3; By motor 2 controls reciprocating pump 3 pistons and capillary 1 are connected three-way diverter valve 14 again, as shown in Figure 3, promote reciprocating pump 3 pistons, the cleaning fluid in the working chamber is pressurizeed, pressurized washing liquid is finished the cleaning of capillary 1 in capillary 1 ejection, inflow service sink 11.
Claims (8)
1. capillary cleaning device, it is characterized in that: described device comprises uncovered cleaning fluid cup (13), reciprocating piston pump (3) and three-way diverter valve (14), three-way diverter valve (14) is arranged on cleaning fluid cup (13), between reciprocating piston pump (3) and the capillary (1), its valve port respectively with the working chamber of reciprocating piston pump (3), cleaning fluid cup (13) is connected with capillary (1) ne-leakage, three-way diverter valve (14) has two operating positions, can select the working chamber of reciprocating piston pump (3) to be connected with cleaning fluid cup (13), perhaps the working chamber of reciprocating piston pump (3) is connected with capillary (1).
2. capillary cleaning device according to claim 1 is characterized in that: described three-way diverter valve (14) is a solenoid directional control valve.
3. capillary cleaning device according to claim 2, it is characterized in that: described solenoid directional control valve is " ⊥ " shape and arranges, wherein, the valve port that solenoid directional control valve makes progress communicates with reciprocating piston pump (3), and two following valve ports communicate with capillary (1) and cleaning fluid cup (13) respectively.
4. capillary cleaning device according to claim 1 is characterized in that: described capillary pipe length is 500～800mm, and internal diameter is 0.5mm, and the cleaning fluid volume that reciprocating piston pump (3) sucked in the cleaning frequency is 0.3～0.8ml.
5. capillary cleaning device according to claim 4 is characterized in that: the cleaning pressure of described reciprocating piston pump (3) is 0.2Mpa.
6. capillary cleaning device according to claim 1 is characterized in that: described three-way diverter valve (14), reciprocating piston pump (3), capillary (1) drive by the motor (2) of control system (7) control.
7. capillary cleaning device according to claim 6 is characterized in that: described three-way diverter valve (14), the work number of times of reciprocating piston pump (3) in each cleaning frequency are adjustable.
8. capillary cleaning device according to claim 1 is characterized in that: described three-way diverter valve (14) is electro-hydraulic reversing valve or motor-driven reversal valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202119679U CN201543626U (en) | 2009-11-06 | 2009-11-06 | Capillary tube cleaning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202119679U CN201543626U (en) | 2009-11-06 | 2009-11-06 | Capillary tube cleaning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201543626U true CN201543626U (en) | 2010-08-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202119679U Expired - Fee Related CN201543626U (en) | 2009-11-06 | 2009-11-06 | Capillary tube cleaning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201543626U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102179385A (en) * | 2011-01-10 | 2011-09-14 | 黄振杰 | Water driven cleaning device for open flume type ultraviolet disinfector |
| CN102253104A (en) * | 2011-03-25 | 2011-11-23 | 浙江大学 | Automatic cleaning and glue pouring platform for capillary array |
| CN102632057A (en) * | 2012-03-21 | 2012-08-15 | 北京博晖创新光电技术股份有限公司 | Cleaning device for capillary tube of automatic sampler and cleaning method |
| CN106345761A (en) * | 2016-09-12 | 2017-01-25 | 天津职业技术师范大学 | Automatic clearing apparatus for inner surface of tubule |
| CN108211019A (en) * | 2017-08-28 | 2018-06-29 | 深圳市前海未来无限投资管理有限公司 | Suction drainage control pipe fitting and suction Dishwasher |
| CN108380602A (en) * | 2018-02-02 | 2018-08-10 | 武汉华星光电技术有限公司 | A kind of syringe pump cleaning equipment, method and syringe pump |
-
2009
- 2009-11-06 CN CN2009202119679U patent/CN201543626U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102179385A (en) * | 2011-01-10 | 2011-09-14 | 黄振杰 | Water driven cleaning device for open flume type ultraviolet disinfector |
| CN102253104A (en) * | 2011-03-25 | 2011-11-23 | 浙江大学 | Automatic cleaning and glue pouring platform for capillary array |
| CN102253104B (en) * | 2011-03-25 | 2013-05-22 | 浙江大学 | Automatic cleaning and glue pouring platform for capillary array |
| CN102632057A (en) * | 2012-03-21 | 2012-08-15 | 北京博晖创新光电技术股份有限公司 | Cleaning device for capillary tube of automatic sampler and cleaning method |
| CN106345761A (en) * | 2016-09-12 | 2017-01-25 | 天津职业技术师范大学 | Automatic clearing apparatus for inner surface of tubule |
| CN108211019A (en) * | 2017-08-28 | 2018-06-29 | 深圳市前海未来无限投资管理有限公司 | Suction drainage control pipe fitting and suction Dishwasher |
| CN108380602A (en) * | 2018-02-02 | 2018-08-10 | 武汉华星光电技术有限公司 | A kind of syringe pump cleaning equipment, method and syringe pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHANGHAI INESA ANALYTICAL INSTRUMENT CO., LTD. Free format text: FORMER OWNER: SHANGHAI CO., LTD OF FINE SCIENTIFIC INSTRUMENTS Effective date: 20120503 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20120503 Address after: 200233 -01 room, 18 West floor, 481 Guiping Road, Xuhui District, Shanghai Patentee after: Shanghai INESA Analytical Instrument Co., Ltd. Address before: 200233 No. 7, Cangwu Road, Shanghai, Xuhui District Patentee before: Shanghai Co., Ltd of Fine Scientific Instruments |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100811 Termination date: 20131106 |