CN108940394A - A kind of micropipette mechanism with automatic withdraw of the needle function - Google Patents
A kind of micropipette mechanism with automatic withdraw of the needle function Download PDFInfo
- Publication number
- CN108940394A CN108940394A CN201710360859.7A CN201710360859A CN108940394A CN 108940394 A CN108940394 A CN 108940394A CN 201710360859 A CN201710360859 A CN 201710360859A CN 108940394 A CN108940394 A CN 108940394A
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- China
- Prior art keywords
- needle
- cavity
- piston
- withdraw
- micropipette
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- 230000007246 mechanism Effects 0.000 title claims abstract description 69
- 239000007788 liquid Substances 0.000 claims abstract description 20
- 230000005540 biological transmission Effects 0.000 claims abstract description 18
- 238000007789 sealing Methods 0.000 claims description 10
- 230000033001 locomotion Effects 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 2
- 239000004606 Fillers/Extenders Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L3/00—Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
- B01L3/02—Burettes; Pipettes
- B01L3/021—Pipettes, i.e. with only one conduit for withdrawing and redistributing liquids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2200/00—Solutions for specific problems relating to chemical or physical laboratory apparatus
- B01L2200/06—Fluid handling related problems
- B01L2200/0689—Sealing
Landscapes
- Health & Medical Sciences (AREA)
- Clinical Laboratory Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a kind of micropipette mechanisms with automatic withdraw of the needle function, including cavity, the cavity is provided with two groups of piston holes, the cavity is provided with suction piston mechanism, cavity lower surface is equipped with automatic withdraw of the needle mechanism, the micromotion mechanism of cavity upper surface, the suction piston mechanism is by the U-shaped soft rubber ring that is mounted in piston hole, mounted in the mobile piston of piston hole, spring A in piston inner hole, it is constituted with the tapered needle seat of piston hole cooperation, the micromotion mechanism is by being mounted on the upper cover body of cavity upper surface, it is opened in two groups of stepped holes in upper cover body opposing pistons hole, the movable block installed in stepped hole, it is constituted with the liquid relief transmission mechanism being mounted in upper cover body, withdraw of the needle transmission mechanism on lower cover and lower cover of the automatic withdraw of the needle mechanism by being mounted on cavity lower surface is constituted.The invention has the advantages that of simple structure and strong practicability.
Description
Technical field
The present invention relates to automation pipettor, especially a kind of micropipette mechanisms with automatic withdraw of the needle function.
Background technique
During micropipette, liquid relief precision is low, more demanding to testing crew manual operation, and usual liquid relief equipment is main
Applied to a large amount of liquid relief fields, micropipette product is less, meanwhile, it is unable to the requirement of automatic detection instrument.
Summary of the invention
The purpose of the present invention is to solve the above problems, devise a kind of micropipette machine with automatic withdraw of the needle function
Structure.
Realize above-mentioned purpose the technical scheme is that, a kind of micropipette mechanism with automatic withdraw of the needle function, packet
Cavity is included, the cavity is provided with two groups of piston holes, and the cavity is provided with suction piston mechanism, cavity lower surface is equipped with and moves back automatically
Needle mechanism, cavity upper surface micromotion mechanism, the suction piston mechanism is by the U-shaped soft rubber ring, the dress that are mounted in piston hole
Spring A in the mobile piston, piston inner hole of piston hole, the tapered needle seat composition with piston hole cooperation, the micromover
Structure is by being mounted on the upper cover body of cavity upper surface, two groups of stepped holes for being opened in upper cover body opposing pistons hole, installing in stepped hole
Movable block and the liquid relief transmission mechanism being mounted in upper cover body are constituted, and the automatic withdraw of the needle mechanism is by being mounted on cavity following table
Withdraw of the needle transmission mechanism on the lower cover and lower cover in face is constituted.
The mobile outer surface of piston is equipped with sealing ring.
The upper cover body fixes U-shaped soft rubber ring with cavity, passes through spring with piston block on the inside of the U-shaped soft rubber ring
A is pressed into contact with, and outside is contacted with movable block.
The liquid relief transmission mechanism is by the shifting that is mounted on the intracorporal linear motor A of upper cover, connect with the mobile terminal linear motor A
Guide sleeve on movable plate, movable plate, the guide post composition with guide sleeve cooperation.
The withdraw of the needle transmission mechanism is by being mounted on the linear motor B of lower cover, the withdraw of the needle connecting with the mobile terminal linear motor B
Plate, the screw for guiding and spring B are constituted.
Equipped with movable steel ball between the movable block and movable plate.
Gasket is housed, the tapered needle seat passes through lower cover and chamber between the tapered needle seat and cavity piston hole
Body is fixed.
The withdraw of the needle plate of the withdraw of the needle mechanism is provided with circular hole corresponding with tapered needle seat.
The guide post of the liquid relief transmission mechanism is mounted on cavity.
The micropipette mechanism with automatic withdraw of the needle function made using technical solution of the present invention, can steadily be moved
Liquid, sealing effect with higher have the function of the automatic withdraw of the needle, meanwhile, it is compact-sized, it can be applied to other automatic detections
Equipment.
Detailed description of the invention
Fig. 1 is the structural front view of the micropipette mechanism of the present invention with automatic withdraw of the needle function；
Fig. 2 is the structure top view of the micropipette mechanism of the present invention with automatic withdraw of the needle function；
Fig. 3 is the structure left view of the micropipette mechanism of the present invention with automatic withdraw of the needle function；
Fig. 4 is the structure partial enlarged drawing of the micropipette mechanism of the present invention with automatic withdraw of the needle function；
In figure, 1, cavity；2, piston hole；3, U-shaped soft rubber ring；4, piston block；5, spring A；6, tapered needle seat；7, on
Lid；8, stepped hole；9, movable block；10, lower cover；11, sealing ring；12, linear motor A；13, movable plate；14, guide sleeve；15,
Guide post；16, linear motor B；17, withdraw of the needle plate；18, screw；19, spring B；20, steel ball；21, gasket；22, circular hole.
Specific embodiment
The present invention is specifically described with reference to the accompanying drawing, it is as shown in Figs 1-4, a kind of with the micro- of automatic withdraw of the needle function
Pipetting device is measured, including cavity, the cavity are provided with two groups of piston holes, the cavity is provided under suction piston mechanism, cavity
Micromotion mechanism of the surface equipped with automatic withdraw of the needle mechanism, cavity upper surface, the suction piston mechanism is by the U that is mounted in piston hole
Type soft rubber ring, the mobile piston mounted in piston hole, the spring A in piston inner hole, the tapered needle seat structure with piston hole cooperation
At, the micromotion mechanism by two groups of stepped holes, ranks being mounted on the upper cover body of cavity upper surface, be opened in upper cover body opposing pistons hole
The movable block installed in terraced hole and the liquid relief transmission mechanism being mounted in upper cover body are constituted, and the automatic withdraw of the needle mechanism is by pacifying
Withdraw of the needle transmission mechanism on the lower cover and lower cover of cavity lower surface is constituted；The mobile outer surface of piston is equipped with close
Seal ring；The upper cover body fixes U-shaped soft rubber ring with cavity, is pressed with piston block by spring A on the inside of the U-shaped soft rubber ring
Close contact, outside are contacted with movable block；The liquid relief transmission mechanism is by being mounted on the intracorporal linear motor A of upper cover and straight-line electric
The movable plate of the mobile terminal machine A connection, the guide sleeve on movable plate, the guide post composition with guide sleeve cooperation；The withdraw of the needle transmission mechanism by
It is mounted on the linear motor B of lower cover, the withdraw of the needle plate connecting with the mobile terminal linear motor B, the screw for guiding and spring B structure
At；Equipped with movable steel ball between the movable block and movable plate；Equipped with sealing between the tapered needle seat and cavity piston hole
Pad, the tapered needle seat are fixed by lower cover and cavity；The withdraw of the needle plate of the withdraw of the needle mechanism is provided with and tapered needle seat
Corresponding circular hole；The guide post of the liquid relief transmission mechanism is mounted on cavity.
The characteristics of the present embodiment is that cavity is provided with two groups of piston holes, and cavity is provided with suction piston mechanism, cavity following table
Micromotion mechanism of the face equipped with automatic withdraw of the needle mechanism, cavity upper surface, suction piston mechanism is by the U-shaped soft rubber that is mounted in piston hole
Cushion rubber, the mobile piston mounted in piston hole, the spring A in piston inner hole, the tapered needle seat composition with piston hole cooperation, fine motion
Mechanism is by being mounted on the upper cover body of cavity upper surface, two groups of stepped holes for being opened in upper cover body opposing pistons hole, installing in stepped hole
Movable block and the liquid relief transmission mechanism that is mounted in upper cover body constitute, automatic withdraw of the needle mechanism by being mounted on cavity lower surface
Lower cover and lower cover on withdraw of the needle transmission mechanism constitute, can steady liquid relief, sealing effect with higher has automatic
Withdraw of the needle function, meanwhile, it is compact-sized, it can be applied to other automatic detection systems.
In the present embodiment, the linear motor A installed in upper cover body, drives movable plate linear movement, and module extender board is being led
Stablize movement under the action of column guide sleeve, movable plate pushes down steel ball to pull down movable block, and movable block realizes micro movement, moves
Motion block is contacted with U-shaped soft rubber ring, realizes the compression of air, and U-shaped soft rubber ring inner cavity is equipped with the spring A and piston restored automatically
Block, piston block and the sealing of cavity piston hole have sealing effect, and tapered needle seat on cavity, is moved back by lower cover fixing seal
Needle plate is mounted on linear motor B by through-hole, and withdraw of the needle plate is equipped with screw guiding, is realized and is stablized the withdraw of the needle.
Above-mentioned technical proposal only embodies the optimal technical scheme of technical solution of the present invention, those skilled in the art
The principle of the present invention is embodied to some variations that some of them part may be made, belongs to the scope of protection of the present invention it
It is interior.
Claims (9)
1. a kind of micropipette mechanism with automatic withdraw of the needle function, including cavity (1), which is characterized in that the cavity (1) is opened
There are two groups of piston holes (2), the cavity (1) is provided with suction piston mechanism, cavity (1) lower surface is equipped with automatic withdraw of the needle mechanism,
The micromotion mechanism of cavity (1) upper surface, the suction piston mechanism by be mounted in piston hole (2) U-shaped soft rubber ring (3),
Spring A (5) in the mobile piston (4), piston inner hole of piston hole (2), the tapered needle seat with piston hole (2) cooperation
(6) it constitutes, the micromotion mechanism is by being mounted on the upper cover body (7) of cavity (1) upper surface, being opened in upper cover body (7) opposing pistons hole
(2) two groups of stepped holes (8), the middle movable block (9) installed of stepped hole (8) and the liquid relief driver being mounted on upper cover body (7)
Structure is constituted, moving back on lower cover (10) and lower cover (10) of the automatic withdraw of the needle mechanism by being mounted on cavity (1) lower surface
Needle transmission mechanism is constituted.
2. a kind of micropipette mechanism with automatic withdraw of the needle function according to claim 1, which is characterized in that described
Mobile piston (4) outer surface is equipped with sealing ring (11).
3. a kind of micropipette mechanism with automatic withdraw of the needle function according to claim 1, which is characterized in that on described
Lid (7) is fixed by U-shaped soft rubber ring (3) and cavity (1), passes through bullet with piston block (4) on the inside of the U-shaped soft rubber ring (3)
Spring A (5) is pressed into contact with, and outside is contacted with movable block (9).
4. a kind of micropipette mechanism with automatic withdraw of the needle function according to claim 1, which is characterized in that the shifting
Liquid transmission mechanism is by the linear motor A (12) being mounted in upper cover body (7), the movement connecting with linear motor A (12) mobile terminal
Guide sleeve (14) on plate (13), movable plate (13), guide post (15) composition with guide sleeve (14) cooperation.
5. a kind of micropipette mechanism with automatic withdraw of the needle function according to claim 1, which is characterized in that described to move back
Needle transmission mechanism is by being mounted on the linear motor B (16) of lower cover (10), the withdraw of the needle plate connecting with linear motor B (16) mobile terminal
(17), it is constituted for the screw of guiding (18) and spring B (19).
6. a kind of micropipette mechanism with automatic withdraw of the needle function according to claim 1, which is characterized in that the shifting
Equipped with movable steel ball (20) between motion block (9) and movable plate (13).
7. a kind of micropipette mechanism with automatic withdraw of the needle function according to claim 1, which is characterized in that the cone
Gasket (21) are housed between shape needle holder (6) and cavity piston hole (2), the tapered needle seat (6) passes through lower cover (10)
It is fixed with cavity (1).
8. a kind of micropipette mechanism with automatic withdraw of the needle function according to claim 1, which is characterized in that described
The withdraw of the needle plate (17) of withdraw of the needle mechanism is provided with circular hole (22) corresponding with tapered needle seat (6).
9. a kind of micropipette mechanism with automatic withdraw of the needle function according to claim 1, which is characterized in that the shifting
The guide post (15) of liquid transmission mechanism is mounted on cavity (1).
1, cavity；2, piston hole；3, U-shaped soft rubber ring；4, piston block；5, spring A；6, tapered needle seat；7, upper cover body；8, rank
Terraced hole；9, movable block；10, lower cover；11, sealing ring；12, linear motor A；13, movable plate；14, guide sleeve；15, guide post；16,
Linear motor B；17, withdraw of the needle plate；18, screw；19, spring B；20, steel ball；21, gasket；22, circular hole.
Technical field: automation pipettor
Background technique: during micropipette, liquid relief precision is low, testing crew is manually operated more demanding, usual liquid relief dress
Standby to be mainly used in a large amount of liquid relief fields, micropipette product is less, meanwhile, it is unable to the requirement of automatic detection instrument.
The utility model has the advantages that can steady liquid relief, sealing effect with higher has the function of the automatic withdraw of the needle, meanwhile, it is compact-sized,
It can be applied to other automatic detection systems.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710360859.7A CN108940394A (en) | 2017-05-17 | 2017-05-17 | A kind of micropipette mechanism with automatic withdraw of the needle function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710360859.7A CN108940394A (en) | 2017-05-17 | 2017-05-17 | A kind of micropipette mechanism with automatic withdraw of the needle function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108940394A true CN108940394A (en) | 2018-12-07 |
Family
ID=64462726
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710360859.7A Pending CN108940394A (en) | 2017-05-17 | 2017-05-17 | A kind of micropipette mechanism with automatic withdraw of the needle function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108940394A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101063441A (en) * | 2006-04-25 | 2007-10-31 | 上海凯实生物科技有限公司 | Gas replacement type trace quantity micro sampling-fetching pump |
| CN103163310A (en) * | 2013-03-15 | 2013-06-19 | 东南大学 | Multi-channel micro-volume sampling device |
| CN103691498A (en) * | 2014-01-06 | 2014-04-02 | 广州市刑事科学技术研究所 | Liquid-moving machine and method of moving liquid by same |
| CN104148126A (en) * | 2014-08-20 | 2014-11-19 | 南京中科神光科技有限公司 | Self-adaption sucking head withdrawing device |
| CN207025361U (en) * | 2017-05-17 | 2018-02-23 | 天津工业大学 | A kind of micropipette mechanism with automatic withdraw of the needle function |
-
2017
- 2017-05-17 CN CN201710360859.7A patent/CN108940394A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101063441A (en) * | 2006-04-25 | 2007-10-31 | 上海凯实生物科技有限公司 | Gas replacement type trace quantity micro sampling-fetching pump |
| CN103163310A (en) * | 2013-03-15 | 2013-06-19 | 东南大学 | Multi-channel micro-volume sampling device |
| CN103691498A (en) * | 2014-01-06 | 2014-04-02 | 广州市刑事科学技术研究所 | Liquid-moving machine and method of moving liquid by same |
| CN104148126A (en) * | 2014-08-20 | 2014-11-19 | 南京中科神光科技有限公司 | Self-adaption sucking head withdrawing device |
| CN207025361U (en) * | 2017-05-17 | 2018-02-23 | 天津工业大学 | A kind of micropipette mechanism with automatic withdraw of the needle function |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
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| CB02 | Change of applicant information |
Country or region after: China Address after: No. 399 Bingshui Road, Xiqing District, Tianjin, Tianjin Applicant after: TIANJIN POLYTECHNIC University Applicant after: TIANJIN ERA BIOLOGY TECHNOLOGY CO.,LTD. Address before: No. 399 Bingshui Road, Xiqing District, Tianjin, Tianjin Applicant before: TIANJIN POLYTECHNIC University Country or region before: China Applicant before: TIANJIN ERA BIOLOGY ENGINEERING Co.,Ltd. |