CN100549412C - A kind of gas displacement type band removes the micro-sampling pump of suction head apparatus automatically - Google Patents
A kind of gas displacement type band removes the micro-sampling pump of suction head apparatus automatically Download PDFInfo
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- CN100549412C CN100549412C CNB2006100260409A CN200610026040A CN100549412C CN 100549412 C CN100549412 C CN 100549412C CN B2006100260409 A CNB2006100260409 A CN B2006100260409A CN 200610026040 A CN200610026040 A CN 200610026040A CN 100549412 C CN100549412 C CN 100549412C
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- micro
- suction nozzle
- sampling pump
- pump
- type band
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- 238000005070 sampling Methods 0.000 title claims abstract description 23
- 238000006073 displacement reaction Methods 0.000 title claims abstract description 19
- 239000007788 liquid Substances 0.000 abstract description 29
- 238000011010 flushing procedure Methods 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000012864 cross contamination Methods 0.000 abstract description 3
- 230000007423 decrease Effects 0.000 abstract description 2
- 239000000523 sample Substances 0.000 description 17
- 238000000034 method Methods 0.000 description 7
- 230000003321 amplification Effects 0.000 description 3
- 238000010009 beating Methods 0.000 description 3
- 238000003199 nucleic acid amplification method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 208000035473 Communicable disease Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000005693 optoelectronics Effects 0.000 description 1
- 238000010587 phase diagram Methods 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
The present invention relates to a kind of micro updating liquid that is applied to medical equipment and laboratory automation equipment shifts with micro-sampling pump technical field.Gas displacement type band of the present invention removes the micro-sampling pump of suction head apparatus automatically, comprise pump body, linear electric motor, drive lead screw, piston, sliding sleeve, cylinder, rifle head and suction nozzle removal cover, wherein sliding sleeve, cylinder and rifle head are connected as a single entity successively from top to bottom, and suction nozzle is removed cover and is fixed on the pump place of close rifle head on one's body.Adopt air displacement the decline amount sampling pump of disposable tip of the present invention as the liquid transfer medium, solved the problem that needs complicated flushing line and cross pollution, cooperate the use of pressure transducer simultaneously, can sensitively survey whether liquid level height and suction nozzle cooperate closely and whether suction nozzle is got.External relatively expensive mass liquid work station, the advantage on the existing cost has also been avoided cross contamination between specimens.
Description
Technical field
The present invention relates to a kind of micro updating liquid that is applied to medical equipment and laboratory automation equipment shifts with micro-sampling pump technical field.
Background technique
The mode of the at present domestic general manual application of sample that adopts in R﹠D institution laboratory and hospital inspection section office, this mode requires height to operator, the application of sample error is big, laboratory operation personnel working strength is big when handling sample in enormous quantities, and existence adds the possibility of position, wrong hole, the another one important problem is the application of sample personnel when handling infectious diseases or poisonous and harmful substance, has infected possibility.Even part unit has bought the mass liquid work station of external costliness, what adopt also is that the syringe pump of liquid displacement mode is as its core component, this pump needs the pipe-line system and the probe Rinsing unit of relative complex, its application is limited to, even the defective of this method is that it is inevitable that cross pollution remains through complicated flushing process in addition.Existing in addition liquor removing workstation adopts leads the intermediary of 23 electric suction nozzles as the liquid level induction, and the cost of conduction suction nozzle is higher, and is more expensive more than 4 times than common suction nozzle.The liquor removing workstation that also has adopts capacitor induction type as liquid level sensor, but has probe cost costliness (price of general single probe is more than 80 U.S. dollars), is subjected to shortcomings such as external interference easily.
Summary of the invention
The objective of the invention is to avoid the shortcoming of above-mentioned several method and a kind of air displacement amount of declining sampling pump that adopts disposable tip as the liquid transfer medium is provided, this scheme has solved the problem that needs complicated flushing line and cross pollution.Cooperate the use of pressure transducer simultaneously, can sensitive survey liquid level height and whether suction nozzle cooperates closely, thereby provide comprehensive solution for full-automatic liquor removing workstation.Adopt this pump to cooperate the three-dimensional mobile platform of XYZ, fundamentally solved the loaded down with trivial details and error that manually-operable brings, alleviated the labor intensity of laboratory worker, reduced the possibility of sample mistake, reduced the infected chance of lab assistant.External relatively expensive mass liquid work station, the advantage on the existing cost has also been avoided cross contamination between specimens.
Design of the present invention is as follows: the critical piece of this micro-sampling pump is pump body, the piston of air displacement formula, drive lead screw, and the motor, circlip and the suction nozzle removal cover composition that drive drive lead screw.Be provided with the removal cover of desorption head usefulness at the position that combines with suction nozzle, when motor runs to specified position, remove cover and withstood suction nozzle, and drive lead screw continue to move upward, thereby suction nozzle is destroyed.Design optoelectronic switch in addition and be used to be provided with the motor origin position.Whether the neutral position at piston and suction nozzle is provided with micro-pressure sensor, be used to detect liquid level and suction nozzle and reliably closely cooperate with the parts of getting suction nozzle.Be provided with pressure amplification circuit and motor-drive circuit in addition, be respectively applied for and amplify pressure signal and drive motor.
After entering the liquid that will shift at the suction nozzle that cooperates on the micro-sampling pump, when motor according to microcomputer program move appointment apart from the time, formed pressure difference between piston and the suction nozzle that is used and the liquid that will take a sample, thereby liquid is drawn onto in the middle of the suction nozzle, whole then assembly breaks away from liquid, because the port very little (diameter is no more than 1mm) of suction nozzle, the surface tension of liquid has guaranteed that liquid that can not spills, then suction nozzle is moved to the place that needs application of sample, corresponding distance is moved in the instruction that motor sends according to micro computer, thereby accurately liquid is got.Because what adopt is air displacement formula piston, has avoided contacting with the direct of liquid, fundamentally solved the problem of flushing.
The concrete technical measures that the present invention takes are such:
A kind of gas displacement type band removes the micro-sampling pump of suction head apparatus automatically, comprise pump body, linear electric motor, drive lead screw, piston, sliding sleeve, cylinder, rifle head and suction nozzle removal cover, wherein sliding sleeve, cylinder and rifle head are connected as a single entity successively from top to bottom, and suction nozzle is removed cover and is fixed on the pump place of close rifle head on one's body.
Position at cylinder or rifle head also can be provided with micro-pressure sensor, cooperate amplification circuit again, change sensitively to survey liquid level height and be enclosed within suction nozzle on the rifle head according to inner pressure of air cylinder and whether cooperate closely etc., thereby provide comprehensive solution for full-automatic liquor removing workstation.
Adopt high-precision motor and zero point resetting means, can be controlled at mobile accuracy below 5 microns, thereby guarantee the precision of application of sample.Zero point, resetting means can be formed with the catch that is connected on drive lead screw by photoelectric sensor.
Beneficial effect of the present invention: adopt air displacement the decline amount sampling pump of disposable tip of the present invention, solved the problem that needs complicated flushing line and cross pollution as the liquid transfer medium.Cooperate the use of pressure transducer simultaneously, can sensitive survey liquid level height and whether suction nozzle cooperates closely, thereby provide comprehensive solution for full-automatic liquor removing workstation.Adopt this pump to cooperate the three-dimensional mobile platform of XYZ, fundamentally solved the loaded down with trivial details and error that manually-operable brings, alleviated the labor intensity of laboratory worker, reduced the possibility of sample mistake, reduced the infected chance of lab assistant.External relatively expensive mass liquid work station, the advantage on the existing cost has also been avoided cross contamination between specimens.
Description of drawings
Below in conjunction with accompanying drawing structure of the present invention is done and to be specified:
Fig. 1 is the micro-sampling pump structure figure that the gas displacement type band removes suction head apparatus automatically
Fig. 2-Fig. 5 is that the gas displacement type band goes automatically that the micro-sampling pump of suction head apparatus resets, imbitition, each phase diagram when being about to destroy suction nozzle and suction nozzle and falling.
Label declaration:
First lining of 1-catch 2-photoelectric sensor 3-linear electric motor 4-drive lead screw 5-
6-circlip 7-connecting sleeve 8-sliding sleeve 9-piston 10-pump body 11-cylinder
First spring 13-of 12-connecting screw rod 14-micro-pressure sensor 15-suction nozzle is removed cover
Second spring 17-of 16-rifle head 18-suction nozzle
Embodiment
As shown in Figure 1, gas displacement type band of the present invention removes the micro-sampling pump of suction head apparatus automatically, comprise pump body 10, linear electric motor 3, drive lead screw 4, piston 9, the sliding sleeve 8 that is connected as a single entity from top to bottom successively, cylinder 11 and rifle head 16, suction nozzle removal cover 15, wherein suction nozzle is removed the place that cover 15 is fixed on close rifle head on the pump body 10.
Whether the neutral position at piston 9 bottoms and rifle head 16 also can be provided with micro-pressure sensor 14, cooperates amplification circuit again, change can sensitively to survey liquid level height and be enclosed within suction nozzle on the rifle head according to inner pressure of air cylinder to cooperate closely etc.
The present invention adopts high-precision motor, and by photoelectric sensor and the catch composition resetting means at zero point that is connected on drive lead screw, can be controlled at mobile accuracy below 5 microns, thereby has guaranteed the precision of application of sample.
Sampling pump of the present invention cooperates the three-dimensional mobile platform of XYZ, has fundamentally solved the loaded down with trivial details and error that manually-operable brings.The concrete structure of sampling pump can be taked following mode (as shown in Figure 1), can be other structure also, as long as reach two kinds of movement processes can taking a sample and replace suction nozzle automatically of the present invention.
Described gas displacement type band removes the micro-sampling pump of suction head apparatus automatically, is provided with photoelectric sensor 2, and is connected with linear electric motor, is connected with catch 1 on the drive lead screw 4, can play the effect that resets zero point like this.Suction nozzle is removed cover 15 and can be fixedly linked by the lining of fixedlying connected in connecting screw rod 13 and the pump body.Circlip 6 is established at the top, the inside of sliding sleeve 8, can block the connecting sleeve below the drive lead screw, and whole incorporate sliding sleeve 8, cylinder 11 and rifle head 16 and drive lead screw are moved upward together.
The concrete working principle of the present invention is as follows:
As Fig. 2-shown in Figure 5, gas displacement type band of the present invention go its operating state of micro-sampling pump of suction head apparatus to be divided into reset (Fig. 2), imbitition (Fig. 3) automatically, be about to destroy suction nozzle 18 (promptly be used for take a sample replaceable suction nozzle) (Fig. 4) and suction nozzle fall (Fig. 5) four operating states.
Detailed process is: linear electric motor 3 drive the drive lead screw 4 that is connected with catch 1 and move down, and drive lead screw 4 following connecting sleeves 7 withstand piston 9 and move downward, and first spring 12 of piston base contact simultaneously is compressed, and catch blocks light at this moment
After suction nozzle 18 entered liquid, linear electric motor 3 drove drive lead screw 4 and move upward, and while first spring 12 withstands piston and move upward, and liquid enters disposable tip, and the movement travel of its piston is D1.At this moment the air pressure in the cylinder 11 strengthens, and micro-pressure sensor 14 changes and can sensitively survey liquid level height according to inner pressure of air cylinder, gets required sample.Drive lead screw 4 continues to move up, connecting sleeve 7 moves upward with sliding sleeve 8, cylinder 11 and the rifle head 16 of circlip 6 contacts and drive integral type, continue to move to D2 (beating suction nozzle stroke 1) apart from the time, suction nozzle is in suction nozzle removes cover 15 transition point of colliding, and promptly sampling pump is in the state that is about to destroy suction nozzle.Work as drive lead screw 4 at last and continue to move up, break through transition point, suction nozzle falls automatically, does not influence application of sample next time.The working procedure of wherein beating suction nozzle is D3 (beating suction nozzle stroke 2).
More than be exactly whole four course of action of the gas displacement type band of the present invention micro-sampling pump that removes suction head apparatus automatically.
Claims (3)
1, a kind of gas displacement type band removes the micro-sampling pump of suction head apparatus automatically, comprise pump body (10), linear electric motor (3), drive lead screw (4), piston (9), the sliding sleeve (8) that is connected as a single entity from top to bottom successively, cylinder (11) and rifle head (16), it is characterized in that: also comprise suction nozzle removal cover (15), wherein suction nozzle is removed cover (15) and is fixed on the place that pump body (10) is gone up close rifle head, is provided with micro-pressure sensor (14) in the position of cylinder (11) or rifle head (16).
2, gas displacement type band as claimed in claim 1 removes the micro-sampling pump of suction head apparatus automatically, and it is characterized in that: linear electric motor are connected with photoelectric sensor, is connected with catch on the drive lead screw.
3, remove the micro-sampling pump of suction head apparatus as the described arbitrary gas displacement type band of claim 1～2 automatically, it is characterized in that: employing can be controlled at mobile accuracy the linear electric motor below 5 microns.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100260409A CN100549412C (en) | 2006-04-25 | 2006-04-25 | A kind of gas displacement type band removes the micro-sampling pump of suction head apparatus automatically |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100260409A CN100549412C (en) | 2006-04-25 | 2006-04-25 | A kind of gas displacement type band removes the micro-sampling pump of suction head apparatus automatically |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101063441A CN101063441A (en) | 2007-10-31 |
| CN100549412C true CN100549412C (en) | 2009-10-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100260409A Expired - Fee Related CN100549412C (en) | 2006-04-25 | 2006-04-25 | A kind of gas displacement type band removes the micro-sampling pump of suction head apparatus automatically |
Country Status (1)
| Country | Link |
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| CN (1) | CN100549412C (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101571119B (en) * | 2009-05-25 | 2012-06-06 | 上海凯实生物科技有限公司 | Micro sample-adding pump |
| CN102338784A (en) * | 2010-07-21 | 2012-02-01 | 江苏天瑞仪器股份有限公司 | Control system and control method for high efficiency liquid chromatograph |
| CN104279146B (en) * | 2013-07-01 | 2017-02-22 | 苏州达成生物科技股份有限公司 | Liquid sucking and discharging device |
| CN106153392B (en) * | 2015-04-10 | 2018-09-28 | 泰安市康宇医疗器械有限公司 | Breast milk pipette device and absorption breast milk method |
| CN106582907B (en) * | 2015-10-15 | 2021-05-18 | 常州福生生物技术有限公司 | Pipette capable of automatically withdrawing suction head |
| CH712735A1 (en) * | 2016-07-22 | 2018-01-31 | Tecan Trading Ag | Pipetting device with a liquid volume sensor and liquid processing system. |
| CN108940394A (en) * | 2017-05-17 | 2018-12-07 | 天津工业大学 | A kind of micropipette mechanism with automatic withdraw of the needle function |
| CN108554468A (en) * | 2018-04-17 | 2018-09-21 | 贵州省中国科学院天然产物化学重点实验室 | A kind of mechanical structure of autopipette |
| CN110057624B (en) * | 2019-04-28 | 2024-04-05 | 深圳市大肯科技有限公司 | Air pump |
| CN110053057B (en) * | 2019-04-28 | 2023-08-18 | 深圳市万臣科技有限公司 | Pipetting assembly |
| CN110433886A (en) * | 2019-09-05 | 2019-11-12 | 东莞市聚瑞电气技术有限公司 | New construction accurate pipettor, liquid shifting equipment and liquid relief method |
| CN113624984A (en) * | 2021-08-11 | 2021-11-09 | 江苏拜明生物技术有限公司 | Application of sample arm with liquid level pressure detection function |
| CN114753985A (en) * | 2022-04-22 | 2022-07-15 | 深圳市恒永达科技股份有限公司 | Self-adaptive air type liquid transfer pump, high-precision liquid transfer method and storage medium |
-
2006
- 2006-04-25 CN CNB2006100260409A patent/CN100549412C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN101063441A (en) | 2007-10-31 |
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| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Jiaxing Quest Life Science Co., Ltd. Assignor: Shanghai Kaishi Biotechnology Co., Ltd. Contract record no.: 2011330001145 Denomination of invention: Gas replacement type trace quantity micro sampling-fetching pump Granted publication date: 20091014 License type: Exclusive License Open date: 20071031 Record date: 20110909 |
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| ASS | Succession or assignment of patent right |
Owner name: JIAXING QUEST LIFE SCIENCE CO., LTD. Free format text: FORMER OWNER: SHANGHAI KAISHI BIOTECHNOLOGY CO., LTD. Effective date: 20121127 |
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Free format text: CORRECT: ADDRESS; FROM: 200433 YANGPU, SHANGHAI TO: 314006 JIAXING, ZHEJIANG PROVINCE |
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| TR01 | Transfer of patent right |
Effective date of registration: 20121127 Address after: Jiaxing City, Zhejiang province 314006 Ling Gong Tang Road No. 3339, building six, floor 3 Patentee after: Jiaxing Quest Life Science Co., Ltd. Address before: 200433 room 7009A, building 1, No. 335, National Road, Shanghai, Yangpu District Patentee before: Shanghai Kaishi Biotechnology Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091014 Termination date: 20170425 |
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| CF01 | Termination of patent right due to non-payment of annual fee |