CN205207288U - Automatic liquid suction device - Google Patents
Automatic liquid suction device Download PDFInfo
- Publication number
- CN205207288U CN205207288U CN201520964808.1U CN201520964808U CN205207288U CN 205207288 U CN205207288 U CN 205207288U CN 201520964808 U CN201520964808 U CN 201520964808U CN 205207288 U CN205207288 U CN 205207288U
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- needle tubing
- vacuum generator
- liquid
- imbibition
- suction device
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Abstract
The utility model relates to an automatic liquid suction device, include: vacuum generator with the imbibition needle tubing that vacuum generator links to each other, locates the interior intubate in the needle tubing, with the continuous syringe needle of just locating the needle tubing lower extreme of the lower extreme of interior intubate, the position, the time controlled system that link to each other with the needle tubing. Position, time controlled system include: the arm that links to each other with the needle tubing is with continuous being used for the displacement of control machinery arm and opening the PLC who stops of arm. A vacuum generator and a positive pressurized air source link to each other. Vacuum generator's opening time is set for to the accessible during use, comes to carry out the trace to the liquid sample and absorbs, if need draw big batch liquid sample the time, the accessible sets up the arm and controls the liquid suction device displacement, makes its automatic imbibition, work efficiency when increasing substantially the imbibition, the adoption sets up interior intubate in the needle tubing, make liquid suction device when drawing liquid, and the negative pressure keeps invariable, guarantees its stability of drawing the liquid volume.
Description
Technical field
The utility model relates to constant controlled, the imbibition position of a kind of negative pressure and the accurately adjustable micro-automatic liquid sucker of amount.
Background technique
Vacuum liquid-absorbing system can extract fluid sample or be separated, and is used widely in fields such as biology, food, medical science.As the extraction of biological medium waste liquid, centrifuged supernatant or sedimentary extraction, preparation monoclonal antibody, merge after suction filtration point sample, spectrophotometer or the quick drawing liquid of Biochemical Analyzer etc. that change in liquid, the washing of porous slab of Enzyme-linked Immunosorbent Assay, molecular hyridization experiment of upper clear liquid.
Visible vacuum liquid-absorbing device is made up of three parts substantially on the market, is vacuum system (pump), knock out drum (bottle), pick-up tube and fluid suction head respectively, can extracts quickly and efficiently liquid.These vacuum liquid-absorbing apparatus structures are simple, easy to use, but also there are places that some are worth improving, as hand-held liquid sucking device cannot quantitatively imbitition, the absorption that cannot be used for micro-example, sample size are very large accurately time working efficiency not high, change along with the increase negative pressure of extraction amount and constant situation etc. cannot be kept.The present invention be then in order to improve that above deficiency designs a kind of can the automatic pipetting systems of accurate reproducible, the imbibition ultrahigh in efficiency of quantitative liquid suction, imbibition.
Model utility content
Technical problem to be solved in the utility model is to provide that a kind of structure is simple, constant controlled, the imbibition position of negative pressure and the accurately adjustable micro-automatic liquid sucker of amount.
In order to solve the problem, the utility model provides a kind of automatic liquid sucker, comprise: vacuum generator, the imbibition needle tubing be connected with vacuum generator, be located at the interpolation pipe in needle tubing, be connected with the lower end of interpolation pipe and be located at the syringe needle of needle tubing lower end, the position be connected with needle tubing, time controlled system.
Described position, time controlled system comprise: the mechanical arm be connected with needle tubing, the PLC for controlling mechanical arm displacement and start and stop be connected with mechanical arm.
Described vacuum generator is connected with a malleation source of the gas, and malleation source of the gas comprises: air pump, the gas holder be connected with air pump, and the vacuum generator be connected by pipeline with gas holder is located at the reduction valve on the pipeline between gas holder and vacuum generator, control valve.
Described syringe needle enters in needle tubing by interpolation pipe after suction liquid, and the liquid of interpolation pipe is in constant state, thus maintains the constant of negative pressure.
Vacuum generator mainly comprises: nozzle, the receiving chamber be connected with nozzle, the mixing chamber be connected with receiving chamber, the explosion chamber be connected with mixing chamber.After the injection of pressurized air by contraction, eject (jet) in nozzle; Jet can entrainment stationary fluid flow forward (Involving velocity of jet) together with it of surrounding; The flowing of jet in receiving chamber, jet and extraneous contact will be limited, but still to entrainment part fluid around from the power stream that nozzle flows out to travel forward, so formation low pressure area around jet, fluid in receiving chamber is just sucked into, after mixing with power stream, flow out through the receiving chamber the other end.If when the pressure reduction of nozzle ends reaches certain value, air-flow reaches the velocity of sound or subsonic flow, so at nozzle exit, namely can obtain certain negative pressure in receiving chamber.
The beneficial effects of the utility model are: by setting the opening time of vacuum generator during use, carry out minim suction to fluid sample; When if desired fluid sample in enormous quantities being drawn, by arranging mechanical arm to control liquid sucking device displacement, making its automation imbibition, increasing substantially working efficiency during imbibition; Adopt and arrange interpolation pipe in needle tubing, make liquid sucking device when imbitition, negative pressure keeps constant, ensures the stable of its liquid draw scale of construction.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated;
Fig. 1 is the structural representation of automatic liquid sucker of the present utility model;
Fig. 2 is the structural representation after described automatic liquid sucker is connected with malleation source of the gas.
Embodiment
See Fig. 1, present embodiments provide a kind of automatic liquid sucker, comprise: vacuum generator 1, the imbibition needle tubing 2 be connected with vacuum generator 1, be located at the interpolation pipe 3 in needle tubing 2, be connected with the lower end of interpolation pipe 3 and be located at the syringe needle 4 of needle tubing 2 lower end, the position be connected with needle tubing 2, time controlled system.
Described position, time controlled system comprise: the mechanical arm be connected with needle tubing 2, the PLC for controlling mechanical arm displacement and start and stop be connected with mechanical arm.
Described vacuum generator 1 is connected with a malleation source of the gas, malleation source of the gas comprises: air pump 5, the gas holder 6 be connected with air pump 5, the vacuum generator 1 be connected by pipeline with gas holder 6, is located at the reduction valve 7 on the pipeline between gas holder 6 and vacuum generator 1, control valve 8.
By the effect of malleation source of the gas to vacuum generator 1, produce negative pressure, realize syringe needle and suck liquid; By regulating vacuum generator, the size of adjustable degree of vacuum (negative pressure); After syringe needle sucks liquid, liquid pours into needle tubing through interpolation pipe, and interpolation liquid in pipe keeps constant, thus maintains the constant of negative pressure, and the amount that liquid sucks does not change in time; Operator can arrange the movement of syringe needle, position and imbibition time in position and time controlled system, and when after setting completed, imbibition can be carried out automatically.
Vacuum generator mainly comprises: nozzle, the receiving chamber be connected with nozzle, the mixing chamber be connected with receiving chamber, the explosion chamber be connected with mixing chamber.After the injection of pressurized air by contraction, eject in nozzle
(jet); Jet can entrainment stationary fluid flow forward (Involving velocity of jet) together with it of surrounding; The flowing of jet in receiving chamber, jet and extraneous contact will be limited, but still to entrainment part fluid around from the power stream that nozzle flows out to travel forward, so formation low pressure area around jet, fluid in receiving chamber is just sucked into, after mixing with power stream, flow out through the receiving chamber the other end.If when the pressure reduction of nozzle ends reaches certain value, air-flow reaches the velocity of sound or subsonic flow, so at nozzle exit, namely can obtain certain negative pressure in receiving chamber.
Obviously, above-described embodiment is only for the utility model example is clearly described, and is not the restriction to mode of execution of the present utility model.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all mode of executions.
Claims (2)
1. an automatic liquid sucker, it is characterized in that comprising: vacuum generator (1), the imbibition needle tubing (2) be connected with vacuum generator (1), be located at the interpolation pipe (3) in needle tubing (2), be connected with the lower end of interpolation pipe (3) and be located at the syringe needle (4) of needle tubing (2) lower end, the position be connected with needle tubing (3), time controlled system;
Described position, time controlled system comprise: the mechanical arm be connected with needle tubing (2), the PLC for controlling mechanical arm displacement and start and stop be connected with mechanical arm;
Described vacuum generator (1) is connected with a malleation source of the gas.
2. automatic liquid sucker according to claim 1, it is characterized in that: described malleation source of the gas comprises: air pump, the gas holder be connected with air pump, the vacuum generator be connected by pipeline with gas holder, is located at the reduction valve on the pipeline between gas holder and vacuum generator, control valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520964808.1U CN205207288U (en) | 2015-11-27 | 2015-11-27 | Automatic liquid suction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520964808.1U CN205207288U (en) | 2015-11-27 | 2015-11-27 | Automatic liquid suction device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205207288U true CN205207288U (en) | 2016-05-04 |
Family
ID=55845009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520964808.1U Active CN205207288U (en) | 2015-11-27 | 2015-11-27 | Automatic liquid suction device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205207288U (en) |
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2015
- 2015-11-27 CN CN201520964808.1U patent/CN205207288U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |