CN202506637U - Capillary tube cleaning device for automatic sample feeding device - Google Patents

Capillary tube cleaning device for automatic sample feeding device Download PDF

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Publication number
CN202506637U
CN202506637U CN201220109269XU CN201220109269U CN202506637U CN 202506637 U CN202506637 U CN 202506637U CN 201220109269X U CN201220109269X U CN 201220109269XU CN 201220109269 U CN201220109269 U CN 201220109269U CN 202506637 U CN202506637 U CN 202506637U
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CN
China
Prior art keywords
sample introduction
capillary
wall
cleaning
capillary tube
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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
Application number
CN201220109269XU
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Chinese (zh)
Inventor
杨奇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beijing Bo Hui innovative biotechnology Limited by Share Ltd
Original Assignee
BEIJING BOHUI INNOVATION TECHNOLOGY Co Ltd
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Priority to CN201220109269XU priority Critical patent/CN202506637U/en
Application granted granted Critical
Publication of CN202506637U publication Critical patent/CN202506637U/en
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Abstract

The utility model discloses a capillary tube cleaning device for an automatic sample feeding device. The capillary tube cleaning device comprises a sample feeding arm, an outer wall cleaning pool and an inner wall cleaning liquid bottle, wherein the sample feeding arm is used for clamping the liquid outlet end of the sample feeding capillary tube to be cleaned and driving the sample feeding capillary tube to move, the outer wall cleaning pool is positioned under the moving track of the sample feeding arm, sample feeding capillary tube outer wall cleaning liquid is contained inside the outer wall cleaning pool, capillary tube inner wall cleaning liquid is contained inside the inner wall cleaning liquid bottle, and in addition, the inner wall cleaning liquid bottle is connected with the liquid inlet opening end of the sample feeding capillary tube through a sampling pump. The capillary tube cleaning device can be used for cleaning sample residue on the inner wall and the outer wall of the sample feeding capillary tube, the cleaning structure is simplified, a special driving structure for the cleaning is omitted, meanwhile, a water path and air path interface used on the structure are also omitted, the hidden danger of faults caused by water leakage and air leakage in the work process of the original structure is eliminated, the structure of the cleaning device is simplified, and the maintenance cost of the instrument used by customers and the manufacture cost of the instrument per se are also reduced.

Description

Automatic sampler capillary cleaning device
Technical field
The utility model relates to no flame atomic absorption spectrophotometer automatic sampler technical field, particularly a kind of automatic sampler capillary cleaning device.
Background technology
In the check and analysis field, the automation of instrument detecting has been the direction of instruments design development, and the Atomic Absorption Spectrometer automatic sampler generally uses.The automatic feeding user brings the convenience in the use; But the job stability to instrument has proposed requirement highly, because the high more apparatus structure of automation equipment degree is often more complicated, a series of problems such as instrument job stability, working service produce thereupon; This of instrument type problem generally needs the professional to repair; Usually influence is normal uses, and brings very big inconvenience and cost to increase again therefore for the user, makes the client awe to " automation ".
At present, cleaning capillaceous adopts vapour pressure to drive the method for cleaning and scavenging pump driving cleaning more in the automatic sampler, and two kinds of methods are all added has independently cleaning structure, exists complex structure, trouble point to increase the hidden danger of being brought.
The utility model content
The technical problem that (one) will solve
The technical problem that the utility model will solve is how in that cleaning device is simplified, and under the prerequisite that reduces the fault point, realizes automatic cleaning capillaceous.
(2) technical scheme
In order to solve the problems of the technologies described above, the utility model provides a kind of automatic sampler capillary cleaning device, and it comprises:
The sample introduction arm, its clamping sample introduction to be cleaned liquid outlet end capillaceous, and drive said sample introduction capillary motion;
The outer wall service sink is positioned at said sample introduction arm movement locus below, and its inside holds sample introduction capillary outer wall cleaning fluid;
Inwall cleaning fluid bottle, its inside hold sample introduction capillary tube inner wall cleaning fluid, and link to each other with said sample introduction inlet end capillaceous through sampling pump.
Wherein, also comprise: waste liquid tank, be positioned at said sample introduction arm movement locus below, be used to collect the waste liquid of discharging by said sample introduction capillary.
Wherein, also comprise: waste liquid barrel links to each other with said waste liquid tank.
Wherein, be provided with second magnetic valve between said sampling pump and the said sample introduction capillary, control is by the break-make of said sampling pump to said sample introduction capillary supply inwall cleaning fluid.
Wherein, also be provided with first magnetic valve between said sampling pump and the said inwall cleaning fluid bottle, control is by the break-make of said inwall cleaning fluid bottle to said sampling pump supply inwall cleaning fluid.
Wherein, also comprise: control module, link to each other with said first magnetic valve, second magnetic valve, sampling pump and sample introduction arm respectively, control the ON/OFF of said first magnetic valve, second magnetic valve and sampling pump, and the motion of controlling said sample introduction arm.
(3) beneficial effect
The automatic sampler capillary cleaning device that technique scheme provided; Can clean the sample of sample introduction capillary tube inner wall and outer wall is residual; Cleaning structure is simplified; Saved and cleaned special-purpose Drive Structure, also just saved water route and the air-path interface that uses on this structure simultaneously, eliminated in the original structure work and to cause the hidden danger of fault because of leaking, leak gas; The simplification of cleaning device structure has also reduced the maintenance cost of client's instrument use and the manufacturing cost of instrument itself.Sample introduction cleaning capillaceous is carried out during Atomic Absorption Spectrometer is measured, and makes whole time measuring period constant, promptly can not increase whole Measuring Time and influence operating efficiency, has solved the pollution problem of sample introduction capillary simultaneously.
Description of drawings
Fig. 1 is the structural representation of the automatic sampler capillary cleaning device of the utility model embodiment 1.
Wherein, 1: the sample introduction capillary; 2: the outer wall service sink; 3: waste liquid barrel; 4: control module; 5: inwall cleaning fluid bottle; 6: the first magnetic valves; 7: sampling pump; 8: the second magnetic valves; 9: the sample introduction arm; 10: waste liquid tank.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment, the specific embodiment of the utility model is described in further detail.Following examples are used to explain the utility model, but are not used for limiting the scope of the utility model.
Embodiment 1
Fig. 1 shows the structural representation of the automatic sampler capillary cleaning device of present embodiment, and with reference to diagram, it comprises sample introduction capillary 1, outer wall service sink 2; Waste liquid barrel 3, control module 4, inwall cleaning fluid bottle 5, the first magnetic valves 6; Sampling pump 7, the second magnetic valves 8, sample introduction arm 9 and waste liquid tank 10.
Wherein, the liquid outlet end of sample introduction arm 9 clampings sample introduction capillary 1 to be cleaned, and be used to drive 1 motion of sample introduction capillary; Outer wall service sink 2 is positioned at sample introduction arm 9 movement locus below, and its inside holds the outer wall cleaning fluid of sample introduction capillary 1; Inwall cleaning fluid bottle 5, its inside hold the inwall cleaning fluid of sample introduction capillary 1, and link to each other with the inlet end of sample introduction capillary 1 through sampling pump 7; Waste liquid tank 10 is positioned at sample introduction arm 9 movement locus below, is used to collect the waste liquid of being discharged by sample introduction capillary 1; Waste liquid barrel 3 links to each other with waste liquid tank 10, is used for the waste liquid of collecting in the waste liquid tank 10 is collected in the jumbo waste liquid barrel 3.
And, between sampling pump 7 and sample introduction capillary 1, be provided with second magnetic valve 8, control by the break-make of sampling pump 7 by second magnetic valve 8 to sample introduction capillary 1 supply inwall cleaning fluid; Be provided with first magnetic valve 6 between sampling pump 7 and the inwall cleaning fluid bottle 5, control is by the break-make of inwall cleaning fluid bottle 5 to sampling pump 7 supply inwall cleaning fluids.
Also be provided with control module 4 in the present embodiment, link to each other with sample introduction arm 9 with first magnetic valve 6, second magnetic valve 8, sampling pump 7 respectively, controlling the ON/OFF of first magnetic valve 6, second magnetic valve 8 and sampling pump 7, and the motion of control sample introduction arm 9.
In the present embodiment, the cleaning fluid that holds in outer wall service sink 2 and the inwall cleaning fluid bottle 5 all adopts weak acid solution, can clean residual sample on sample introduction capillary 1 inside and outside wall, can not make cleaning operation possess danger again; And the inner and outer wall to sample introduction capillary 1 in the present embodiment has carried out silicidation, can make the dissolving of sample solution residual solution, reduces residual quantity.For the ease of cleaning the outer wall of sample introduction capillary 1, the top end opening of present embodiment outer wall service sink 2 is set to uncovered, and dischargeable capacity is convenient to sample introduction arm 9 drive sample introduction capillaries 1 and is done the washing action more than 100ml.And; Also be provided with the sample content detecting unit in the outer wall service sink 2, link to each other, with sample solution content residual in the real-time detection outer wall service sink 2 with control module 4; Just stop sample introduction work when the pollution of outer wall cleaning fluid exceeds standard, and make prompting by control module 4.
Embodiment 2
The method that present embodiment provides the automatic sampler capillary cleaning device of a kind of embodiment of utilization 1 that the sample introduction capillary is cleaned.
Automatic sampler all need clean sample introduction capillary 1 before each sample introduction, and whole cleaning is carried out under control module 4 controls.At first, the liquid outlet end that sample introduction arm 9 drives sample introduction capillaries 1 advances to the opening part of waste liquid tank 10, to sample introduction capillary 1 in, feeds the inwall cleaning fluid, cleaning sample introduction capillary 1 inwall by the inlet end of sample introduction capillary 1.Be specially, first magnetic valve, 6 conductings this moment, second magnetic valve 8 breaks off, and sampling pump 7 is communicated with inwall cleaning fluid bottle 5 through first magnetic valve 6, sampling pump 7 imbibitions, the inwall cleaning fluid gets into sampling pump 7; First magnetic valve 6 breaks off then; 8 conductings of second magnetic valve make sampling pump 7 and 1 conducting of sample introduction capillary, sampling pump 7 discharge opeings; The inwall wash liquid stream is through sample introduction capillary 1; Its inwall is cleaned the back flow into waste liquid tank 10, and waste liquid is drained into waste liquid barrel 3, accomplish the first time of sample introduction capillary 1 inwall thus and clean by waste liquid tank 10.
Next; Suck the part air by sample introduction capillary 1 liquid outlet to sample introduction capillary 1 inside; And with carrying out the cleaning of sample introduction capillary 1 outer wall in the sample introduction capillary 1 liquid outlet end immersion outer wall service sink 2, the part air of sample introduction capillary 1 liquid outlet end is kept apart sample introduction capillary 1 inner inwall cleaning fluid and outer wall service sink 2 interior outer wall cleaning fluids.Be specially, sample introduction arm 9 is lifted, go into one section air, isolate the inwall cleaning fluid in the sample introduction capillary 1 through sampling pump 7 suck-backs; Then; Control sample introduction arm 9 advances to outer wall service sink 2; Drive vertical motion, left and right sides transverse movement up and down in the outer wall cleaning fluid of sample introduction capillary 1 in outer wall service sink 2 by sample introduction arm 9; Sample introduction capillary 1 outer wall is carried out rinsing, and inhaled air inwall cleaning fluid and the outer wall service sink 2 interior outer wall cleaning fluids that it is inner separate in the sample introduction capillary 1, avoid outer wall cleaning fluid entering sample introduction capillary 1 and sample introduction capillary 1 is produced cross pollution.
At last, lead to the inwall cleaning fluid by sample introduction capillary 1 inlet towards liquid outlet once more, carry out sample introduction capillary 1 inwall and clean, remove the residual outer wall cleaning fluid that has residual sample on the sample introduction capillary 1 liquid outlet end inwall.Be specially; Sample introduction arm 9 lifts and advances to waste liquid tank 10 positions; According to the above-mentioned process that sample introduction capillary 1 inwall is cleaned, clean sample introduction capillary 1 inwall once more, clean the residual outer wall cleaning fluid in sample introduction capillary 1 liquid outlet port; Accomplished the cleaning to sample introduction capillary 1 inside and outside wall this moment, and injector can carry out follow-up sample introduction work.
In the present embodiment, inwall cleaning fluid and outer wall cleaning fluid requirement every workday are changed, or a day accumulative total sample introduction reaches the new liquid of requirement replacing 200 times.
Injector is after accomplishing primary sample, sample introduction, and it is residual on the inside and outside wall of sample introduction capillary 1, to have sample, and when carrying out the inwall cleaning, the inwall sample is residual to be rinsed, and flows into waste liquid tank; When outer wall cleaned, the residual entering outer wall of outer wall sample cleaning fluid polluted cleaning fluid, repeatedly cleaned the residual meeting of the sample cumulative rises in the outer wall cleaning fluid of back, with contaminated cleaning solution; During sample introduction, contaminated cleaning fluid can remain in sample introduction capillary outer wall, enters into the detection sample pool, and accuracy is measured in influence.
The sample introduction capillary material adopts polytetrafluoroethylene (PTFE); Silicidation is carried out on the surface, makes adhesive force very little, and the liquid that outer wall adheres to after sample circuit is cleaned is about 0.2 μ l; The most very much not can be greater than 1.0 μ L; Therefore, after outer wall cleaned, the contaminant capacity that can be delivered in the sample cup was exactly the outer wall cleaning fluid of 1.0 μ L.
If cleaning fluid is 100mL, primary pollution is about the influence degree of concentration of lotion:
1.0μL/100mL=10 -5
If the single injected sampling amount is 10 μ l, the cleaning fluid residual quantity is 1.0 μ l, and the pollution effect degree is:
10 -5*10 -1=10 -6
If continuous sample introduction 1000 times, greatest contamination influence degree: 10 -3
Following table is an outer wall limit pollution level measurement data:
Table 1
Present embodiment adopts outer wall service sink 2 to clean sample introduction capillary 1 outer wall; Removed the residual contamination of sample introduction capillary 1 outer wall sample; Cleaning utilizes the common structure of injector to accomplish; Saved and cleaned special-purpose Drive Structure, and corresponding water route, gas circuit syndeton, removed in the original structure work and to cause the hidden danger of fault because of leaking, leak gas.
Can find out by above embodiment; The method of the utility model through adopting the outer wall service sink is to residual cleaning of sample of sample introduction capillary outer wall; Make cleaning structure simplify, saved and cleaned special-purpose Drive Structure, be i.e. scavenging pump or cleaning air pressure Drive Structure; Simultaneously also just saved water route and the air-path interface that uses on this structure, removed in the original structure work and to cause the hidden danger of fault because of leaking, leaking gas.The simplification of cleaning device structure has also reduced the maintenance cost of client's instrument use and the manufacturing cost of instrument itself.Capillary tube inner wall, outer wall carry out silicidation, have reduced the adhesive force of sample solution, reduce residual quantity.Cleaning fluid is a weak acid solution, makes the dissolving of sample solution residual solution, reduces residual quantity.Sample introduction cleaning capillaceous is carried out during Atomic Absorption Spectrometer is measured, and makes whole time measuring period constant, promptly can not increase whole Measuring Time, influences operating efficiency.Atomic absorption spectroscopy is the important method of trace and trace element check and analysis, adopts automatic sampler just must solve sample introduction cross-contamination issue capillaceous.Sample introduction pollution capillaceous is from sample residual on capillary tube inner wall and the outer wall, and solving cross-contamination issue is exactly to solve residual sample problem on capillary tube inner wall and the outer wall.This method has solved the pollution problem of sample introduction capillary.
The above only is the preferred implementation of the utility model; Should be understood that; For those skilled in the art; Under the prerequisite that does not break away from the utility model know-why, can also make some improvement and replacement, these improvement and replacement also should be regarded as the protection domain of the utility model.

Claims (6)

1. an automatic sampler capillary cleaning device is characterized in that, comprising:
The sample introduction arm, its clamping sample introduction to be cleaned liquid outlet end capillaceous, and drive said sample introduction capillary motion;
The outer wall service sink is positioned at said sample introduction arm movement locus below, and its inside holds sample introduction capillary outer wall cleaning fluid;
Inwall cleaning fluid bottle, its inside hold sample introduction capillary tube inner wall cleaning fluid, and link to each other with said sample introduction inlet end capillaceous through sampling pump.
2. automatic sampler capillary cleaning device as claimed in claim 1 is characterized in that, also comprises:
Waste liquid tank is positioned at said sample introduction arm movement locus below, is used to collect the waste liquid of being discharged by said sample introduction capillary.
3. automatic sampler capillary cleaning device as claimed in claim 2 is characterized in that, also comprises: waste liquid barrel links to each other with said waste liquid tank.
4. automatic sampler capillary cleaning device as claimed in claim 3 is characterized in that, is provided with second magnetic valve between said sampling pump and the said sample introduction capillary, and control is by the break-make of said sampling pump to said sample introduction capillary supply inwall cleaning fluid.
5. automatic sampler capillary cleaning device as claimed in claim 4; It is characterized in that; Also be provided with first magnetic valve between said sampling pump and the said inwall cleaning fluid bottle, control is by the break-make of said inwall cleaning fluid bottle to said sampling pump supply inwall cleaning fluid.
6. automatic sampler capillary cleaning device as claimed in claim 5; It is characterized in that; Also comprise: control module; Link to each other with said first magnetic valve, second magnetic valve, sampling pump and sample introduction arm respectively, control the ON/OFF of said first magnetic valve, second magnetic valve and sampling pump, and the motion of controlling said sample introduction arm.
CN201220109269XU 2012-03-21 2012-03-21 Capillary tube cleaning device for automatic sample feeding device Expired - Lifetime CN202506637U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201220109269XU CN202506637U (en) 2012-03-21 2012-03-21 Capillary tube cleaning device for automatic sample feeding device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201220109269XU CN202506637U (en) 2012-03-21 2012-03-21 Capillary tube cleaning device for automatic sample feeding device

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN103592223A (en) * 2013-06-09 2014-02-19 北京锐光仪器有限公司 Washing device for atomic fluorescence sampling needle

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN103592223A (en) * 2013-06-09 2014-02-19 北京锐光仪器有限公司 Washing device for atomic fluorescence sampling needle

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C14 Grant of patent or utility model
GR01 Patent grant
CP03 Change of name, title or address

Address after: 102206 9 life Garden Road, Changping District, Beijing

Patentee after: Beijing Bo Hui innovative biotechnology Limited by Share Ltd

Address before: 100195 G, block 25, Lu Jia, 25, Bei Wu Village, Beijing.

Patentee before: Beijing Bohui Innovation Technology Co., Ltd.

CP03 Change of name, title or address
CX01 Expiry of patent term

Granted publication date: 20121031

CX01 Expiry of patent term