CN117046536A - Electric pipettor - Google Patents
Electric pipettor Download PDFInfo
- Publication number
- CN117046536A CN117046536A CN202311049214.3A CN202311049214A CN117046536A CN 117046536 A CN117046536 A CN 117046536A CN 202311049214 A CN202311049214 A CN 202311049214A CN 117046536 A CN117046536 A CN 117046536A
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- CN
- China
- Prior art keywords
- cylinder
- piece
- wall
- handheld
- negative pressure
- Prior art date
- 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.)
- Pending
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- 235000017166 Bambusa arundinacea Nutrition 0.000 claims abstract description 44
- 235000017491 Bambusa tulda Nutrition 0.000 claims abstract description 44
- 241001330002 Bambuseae Species 0.000 claims abstract description 44
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims abstract description 44
- 239000011425 bamboo Substances 0.000 claims abstract description 44
- 239000007788 liquid Substances 0.000 claims abstract description 30
- 230000008878 coupling Effects 0.000 claims abstract description 17
- 238000010168 coupling process Methods 0.000 claims abstract description 17
- 238000005859 coupling reaction Methods 0.000 claims abstract description 17
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000000926 separation method Methods 0.000 description 16
- 239000003153 chemical reaction reagent Substances 0.000 description 6
- 238000006073 displacement reaction Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 3
- 230000033001 locomotion Effects 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 230000000670 limiting effect Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 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
- B01L3/0217—Pipettes, i.e. with only one conduit for withdrawing and redistributing liquids of the plunger pump type
- B01L3/0227—Details of motor drive means
Abstract
The invention discloses an electric pipettor, which comprises a handheld cylinder; the negative pressure cylinder is arranged in the handheld cylinder, the outer wall of the negative pressure cylinder is in sliding contact with the inner wall of the handheld cylinder, the top of the negative pressure cylinder is provided with a quantity-taking adjusting piece, the quantity-taking adjusting piece is arranged at the top of the inner cavity of the handheld cylinder, the top surface of the handheld cylinder is provided with a resetting piece, the resetting piece penetrates through the top surface of the negative pressure cylinder and is provided with a moving piece, and the bottom of the moving piece penetrates through the top surface of the negative pressure cylinder and is positioned in the negative pressure cylinder; the bottom of the negative pressure cylinder is communicated with a liquid inlet piece; the cover that breaks away from the piece is established on the bottom outer wall of handheld section of thick bamboo, and breaks away from piece inner wall and handheld section of thick bamboo outer wall sliding contact, and the feed liquor piece runs through and breaks away from piece sliding contact, and the bottom joint of feed liquor piece has the suction head, breaks away from piece bottom surface and the butt of suction head top surface, and handheld section of thick bamboo inner chamber bottom both sides are provided with the driving piece respectively, and two driving pieces run through handheld section of thick bamboo and break away from piece inner wall rigid coupling respectively. The invention can realize automatic removal of the suction head from the pipette, and ensure the stability and the accuracy of pipetting.
Description
Technical Field
The invention relates to the technical field of test instruments, in particular to an electric pipette.
Background
The liquid-taking device is a precise liquid-taking instrument, and the basic principle is that the gas in a piston cavity is sucked and discharged by means of the up-and-down movement of a piston in the instrument, so that liquid taking and liquid discharging of a gun head connected with the piston cavity are realized, and the liquid-absorbing amount and the liquid-discharging amount depend on the cross-sectional area of the piston and the distance of up-and-down movement of the piston. In the actual operation process, the pipette is generally matched with the suction head for use, negative pressure is provided by the pipette, so that reagents are sucked into the suction head for extraction, and a new suction head is required to be replaced after the pipette is used, so that reagent pollution caused by sucking different working fluids or reagents by the suction head is avoided, and the suction head is a standard part in the market. In the actual operation process, the extracted reagent is positioned in the suction head, and the extracted reagent is in a micro volume, so that the suction head is prevented from being directly taken down by hands to the greatest extent, and under the condition, how to automatically take down the suction head from the pipette becomes a technical problem to be solved.
Disclosure of Invention
The invention aims to provide an electric pipette which is used for solving the problems existing in the prior art.
In order to achieve the above object, the present invention provides the following solutions: the present invention provides an electric pipette comprising:
a hand-held cartridge;
the negative pressure part comprises a negative pressure cylinder, the negative pressure cylinder is arranged in the handheld cylinder, the outer wall of the negative pressure cylinder is in sliding contact with the inner wall of the handheld cylinder, the top of the negative pressure cylinder is provided with a quantity-taking adjusting piece, the quantity-taking adjusting piece is arranged at the top of the inner cavity of the handheld cylinder, the top surface of the handheld cylinder is provided with a reset piece, the reset piece penetrates through a moving piece, and the bottom of the moving piece penetrates through the top surface of the negative pressure cylinder and is positioned in the negative pressure cylinder; the bottom of the negative pressure cylinder is communicated with a liquid inlet piece;
the separation part comprises a separation part, the separation part is sleeved on the outer wall of the bottom of the handheld cylinder, the inner wall of the separation part is in sliding contact with the outer wall of the handheld cylinder, the liquid inlet part penetrates through the separation part and is in sliding contact with the separation part, the bottom of the liquid inlet part is clamped with a suction head, the bottom surface of the separation part is abutted to the top surface of the suction head, driving parts are respectively arranged on two sides of the bottom of the inner cavity of the handheld cylinder, and the driving parts penetrate through the handheld cylinder and are fixedly connected with the inner wall of the separation part respectively.
Preferably, the separating member comprises a sliding cylinder and a conical cylinder, the bottom of the outer wall of the handheld cylinder is sleeved with the sliding cylinder, the inner wall of the sliding cylinder is in sliding contact with the inner wall of the handheld cylinder, two sides of the inner wall of the sliding cylinder are fixedly connected with the driving member respectively, the bottom surface of the sliding cylinder is fixedly connected with the conical cylinder, the bottom surface of the conical cylinder is provided with a telescopic hole, the bottom surface of the conical cylinder is in abutting connection with the top surface of the suction head, and the inner wall of the telescopic hole is in sliding contact with the outer wall of the liquid inlet member.
Preferably, the driving piece comprises a driving motor, the driving motor is fixedly connected to the bottom surface of the inner cavity of the handheld cylinder, a strip-shaped hole is formed in the inner wall of the handheld cylinder, one end of a screw rod is fixedly connected to the output end of the driving motor, one end of a driving rod is arranged at the other end of the screw rod in a penetrating mode, the driving rod is connected with the screw rod in a threaded mode, the other end of the driving rod penetrates through the strip-shaped hole and is fixedly connected to the inner wall of the sliding cylinder, and the outer wall of the driving rod is in sliding contact with the inner wall of the strip-shaped hole.
Preferably, the liquid inlet piece comprises a liquid inlet pipe, the liquid inlet pipe penetrates through the bottom surface of the handheld cylinder, the liquid inlet pipe is fixedly connected with the bottom surface of the handheld cylinder, a communicating pipe is sleeved on the outer wall of the top of the liquid inlet pipe, the inner wall of the communicating pipe is in sliding contact with the outer wall of the liquid inlet pipe, the top of the communicating pipe is communicated with the negative pressure cylinder, the negative pressure cylinder is fixedly connected with the communicating pipe, the bottom of the liquid inlet pipe penetrates through the telescopic hole, the bottom of the liquid inlet pipe is of a conical structure, and the bottom of the liquid inlet pipe is spliced with the suction head.
Preferably, the measuring adjusting part comprises two adjusting cylinders, the two adjusting cylinders are fixedly connected to two sides of the top surface of the inner cavity of the handheld cylinder respectively, one end of an adjusting rod is fixedly connected to the output end of the adjusting cylinder, and the other end of the adjusting rod is fixedly connected with the top surface of the negative pressure cylinder.
Preferably, the moving part comprises a piston rod, the bottom of the piston rod sequentially penetrates through the resetting part, the handheld cylinder and the negative pressure cylinder, a piston block is fixedly connected to the bottom surface of the piston rod and is positioned in the negative pressure cylinder, a rubber ring is fixedly connected to the peripheral surface of the piston block, and the peripheral surface of the rubber ring is in sliding contact with the inner wall of the negative pressure cylinder.
Preferably, the reset piece comprises a reset cylinder, the reset cylinder is fixedly connected to the top surface of the handheld cylinder, the piston rod penetrates through the reset cylinder, a spring is arranged in the reset cylinder, the spring is sleeved on the piston rod, a reset ring is fixedly connected to the outer wall of the piston rod, the reset ring is positioned in the reset cylinder, and the spring is arranged between the bottom surface of the inner cavity of the reset cylinder and the reset ring.
Preferably, the top surface of the piston rod is fixedly connected with a pressing ball.
The invention discloses the following technical effects: the hand-held cylinder is used for grabbing and fixing by hands of a worker when pipetting, the negative pressure cylinder is arranged to lift under the action of the pipetting adjusting part, the pipetting amount is controlled and adjusted by adjusting the distance between the negative pressure cylinder and the bottom of the moving part, the pipetting adjusting part is electrically adjusted, the whole adjusting process is more accurate, pipetting accuracy is ensured, the arranged liquid inlet part can adaptively deform with the displacement of the negative pressure cylinder, the communicating state is ensured, the adaptability is enhanced, the arranged disengaging part is driven by the driving part, after pipetting is completed, the suction head is inserted into the test tube rack, the driving part drives the disengaging part to slowly move downwards until the disengaging part pushes the suction head out, stable disengagement of the suction head is realized, the pouring and the pollution are avoided, and the stability and the accuracy of pipetting are further ensured.
Drawings
For a clearer description of an embodiment of the invention or of the solutions of the prior art, the drawings that are needed in the embodiment will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art:
FIG. 1 is a schematic view of an electric pipette according to the present invention;
FIG. 2 is a cross-sectional view of the present invention;
FIG. 3 is an enlarged view of a portion of A1 of FIG. 2;
FIG. 4 is an enlarged view of a portion of A2 of FIG. 2;
FIG. 5 is an enlarged view of a portion of A3 of FIG. 2;
wherein, 1, a handheld cylinder; 2. a negative pressure cylinder; 3. a suction head; 4. a sliding cylinder; 5. a conical cylinder; 6. a driving motor; 7. a screw; 8. a driving rod; 9. a bar-shaped hole; 10. a liquid inlet pipe; 11. a communicating pipe; 12. adjusting a cylinder; 13. an adjusting rod; 14. a piston rod; 15. a piston block; 16. a rubber ring; 17. a reset cylinder; 18. a spring; 19. a reset ring; 20. the ball is pressed.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
Referring to fig. 1-5, the present invention provides an electric pipette comprising:
a hand-held cartridge 1;
the negative pressure part comprises a negative pressure cylinder 2, the negative pressure cylinder 2 is arranged in the handheld cylinder 1, the outer wall of the negative pressure cylinder 2 is in sliding contact with the inner wall of the handheld cylinder 1, the top of the negative pressure cylinder 2 is provided with a quantity-taking adjusting piece, the quantity-taking adjusting piece is arranged at the top of the inner cavity of the handheld cylinder 1, the top surface of the handheld cylinder 1 is provided with a resetting piece, the resetting piece penetrates through a moving piece, and the bottom of the moving piece penetrates through the top surface of the negative pressure cylinder 2 and is positioned in the negative pressure cylinder 2; the bottom of the negative pressure cylinder 2 is communicated with a liquid inlet piece;
the separation part comprises a separation piece, the separation piece is sleeved on the outer wall of the bottom of the handheld cylinder 1, the inner wall of the separation piece is in sliding contact with the outer wall of the handheld cylinder 1, the liquid inlet piece penetrates through the separation piece and is in sliding contact with the separation piece, the bottom of the liquid inlet piece is clamped with the suction head 3, the bottom surface of the separation piece is abutted with the top surface of the suction head 3, driving pieces are respectively arranged on two sides of the bottom of the inner cavity of the handheld cylinder 1, and the two driving pieces penetrate through the handheld cylinder 1 and are fixedly connected with the inner wall of the separation piece.
The handheld section of thick bamboo 1 that sets up is used for snatching fixedly when carrying out the pipetting, the staff is used for snatching fixedly with the hand, set up negative pressure section of thick bamboo 2 and go up and down under the effect of getting the volume regulating part, through adjusting the interval between negative pressure section of thick bamboo 2 and the moving part bottom and then control and adjust the pipetting, the volume regulating part that sets up adopts electric regulation, make whole adjustment process more accurate, guaranteed pipetting accuracy, the feed liquor spare that sets up can carry out adaptive deformation with the displacement of negative pressure section of thick bamboo 2, guarantee the intercommunication state, reinforcing adaptability, the breaking away from the piece that sets up is driven through the driving piece, after accomplishing the pipetting, insert suction head 3 on the test-tube rack, the driving piece drives and breaks away from the piece and slowly moves down, until breaking away from the piece and release suction head 3, realize the stable breaking away from of suction head 3, avoid spilling and polluting, further guarantee the stability and the accuracy of pipetting.
Further optimizing scheme, break away from piece and including slide cylinder 4 and toper section of thick bamboo 5, slide cylinder 4 cover is established in handheld section of thick bamboo 1 outer wall bottom, slide cylinder 4 inner wall and handheld section of thick bamboo 1 inner wall sliding contact, slide cylinder 4 inner wall both sides respectively with two driving piece rigid couplings, slide cylinder 4 bottom surface rigid coupling has toper section of thick bamboo 5, the telescopic hole has been seted up to toper section of thick bamboo 5 bottom surface, the bottom surface and the top surface butt of suction head 3 of toper section of thick bamboo 5, and telescopic hole inner wall and feed liquor spare outer wall sliding contact.
The sliding cylinder 4 inner wall and the handheld section of thick bamboo 1 outer wall sliding contact who sets up can realize the lift of sliding cylinder 4 and toper section of thick bamboo 5 in the effect of two driving pieces, and after accomplishing the liquid of getting, staff holds whole device and inserts suction head 3 in the test-tube rack, and the driving piece drives, drives sliding cylinder 4 and toper section of thick bamboo 5 and descends, slowly releases suction head 3, realizes breaking away from of suction head 3, guarantees the stability and the accuracy of pipetting.
Further optimizing scheme, the driving piece includes driving motor 6, driving motor 6 rigid coupling is in handheld section of thick bamboo 1 inner chamber bottom surface, and bar hole 9 has been seted up to handheld section of thick bamboo 1 inner wall, and driving motor 6's output rigid coupling has the one end of screw rod 7, and the other end of screw rod 7 runs through the one end that is provided with actuating lever 8, and actuating lever 8 passes through threaded connection with screw rod 7, and bar hole 9 and the inner wall rigid coupling of sliding section of thick bamboo 4 are run through to actuating lever 8's the other end, actuating lever 8 outer wall and bar hole 9 inner wall sliding contact.
The driving motor 6 drives the screw rod 7 to rotate, the driving rod 8 carries out linear lifting motion under the limiting action of the strip-shaped hole 9, and the sliding cylinder 4 is driven to lift.
Further optimizing scheme, the feed liquor spare includes feed liquor pipe 10, feed liquor pipe 10 runs through handheld section of thick bamboo 1 bottom surface, and feed liquor pipe 10 and handheld section of thick bamboo 1 bottom surface rigid coupling, the top outer wall cover of feed liquor pipe 10 is equipped with communicating pipe 11, communicating pipe 11 inner wall and feed liquor pipe 10 outer wall sliding contact, the top and the negative pressure section of thick bamboo 2 intercommunication setting of communicating pipe 11, and negative pressure section of thick bamboo 2 and communicating pipe 11 rigid coupling, the bottom of feed liquor pipe 10 runs through the telescopic hole, the bottom of feed liquor pipe 10 sets up to conical structure, the bottom and the suction head 3 grafting of feed liquor pipe 10.
When the liquid displacement amount is regulated, the position of the negative pressure cylinder 2 needs to be controlled, namely, the negative pressure cylinder 2 can be lifted, the inner wall of the communication cylinder is in sliding contact with the outer wall of the liquid inlet pipe 10, the communication cylinder moves synchronously along with the lifting of the negative pressure cylinder 2, the communication relationship with the liquid inlet pipe 10 can be maintained, and the liquid displacement effect is further realized.
According to a further optimized scheme, the measuring adjusting piece comprises two adjusting air cylinders 12, the two adjusting air cylinders 12 are fixedly connected to two sides of the top surface of the inner cavity of the handheld cylinder 1 respectively, one end of an adjusting rod 13 is fixedly connected to the output end of the adjusting air cylinder 12, and the other end of the adjusting rod 13 is fixedly connected with the top surface of the negative pressure cylinder 2.
The adjusting cylinder 12 is arranged to drive and adjust the relative position of the negative pressure cylinder 2, so as to realize the adjustment of the liquid displacement.
Further optimizing scheme, the moving part includes piston rod 14, and the bottom of piston rod 14 runs through reset piece, handheld section of thick bamboo 1 and negative pressure section of thick bamboo 2 in proper order, and the bottom surface rigid coupling of piston rod 14 has piston block 15, and piston block 15 is located negative pressure section of thick bamboo 2, and the global rigid coupling of piston block 15 has rubber circle 16, and rubber circle 16 global and negative pressure section of thick bamboo 2 inner wall sliding contact.
After the liquid displacement amount is adjusted, namely, the gap between the bottom surface of the piston block 15 and the bottom surface of the inner cavity of the negative pressure cylinder 2 is adjusted, the piston rod 14 is released after the piston rod 14 is pressed to the bottom, and the piston rod is reset under the action of the reset piece, so that the reagent is sucked.
Further optimizing scheme, the restoring piece includes a restoring tube 17, and a restoring tube 17 rigid coupling is in handheld section of thick bamboo 1 top surface, and piston rod 14 runs through a restoring tube 17, is provided with spring 18 in the restoring tube 17, and the spring 18 cover is established on piston rod 14, and the rigid coupling has reset ring 19 on the outer wall of piston rod 14, and reset ring 19 is located a restoring tube 17, and spring 18 sets up between restoring tube 17 inner chamber bottom surface and reset ring 19.
The reset ring 19 and the spring 18 are mutually abutted to realize the reset action of the piston rod 14.
Further preferably, the top surface of the piston rod 14 is fixedly connected with a pressing ball 20.
In the description of the present invention, it should be understood that the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
The above embodiments are only illustrative of the preferred embodiments of the present invention and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art to the technical solutions of the present invention should fall within the protection scope defined by the claims of the present invention without departing from the design spirit of the present invention.
Claims (8)
1. An electric pipette, comprising:
a hand-held cartridge (1);
the negative pressure part comprises a negative pressure cylinder (2), the negative pressure cylinder (2) is arranged in the handheld cylinder (1), the outer wall of the negative pressure cylinder (2) is in sliding contact with the inner wall of the handheld cylinder (1), a quantity taking adjusting piece is arranged at the top of the negative pressure cylinder (2), the quantity taking adjusting piece is arranged at the top of an inner cavity of the handheld cylinder (1), a reset piece is arranged on the top surface of the handheld cylinder (1), a moving piece is arranged in a penetrating way, and the bottom of the moving piece penetrates through the top surface of the negative pressure cylinder (2) and is positioned in the negative pressure cylinder (2); the bottom of the negative pressure cylinder (2) is communicated with a liquid inlet piece;
the utility model provides a break away from the portion, break away from the portion and including breaking away from the piece, the cover that breaks away from the piece is established on the bottom outer wall of handheld section of thick bamboo (1), just break away from a piece inner wall with handheld section of thick bamboo (1) outer wall sliding contact, the feed liquor piece run through break away from the piece and with break away from a sliding contact, the bottom joint of feed liquor piece has suction head (3), break away from a bottom surface with suction head (3) top surface butt, handheld section of thick bamboo (1) inner chamber bottom both sides are provided with the driving piece respectively, two the driving piece runs through handheld section of thick bamboo (1) with break away from a inner wall rigid coupling respectively.
2. An electric pipette as defined in claim 1, wherein: the utility model discloses a suction head, including handheld section of thick bamboo (1), including the piece that breaks away from, break away from includes slide cylinder (4) and toper section of thick bamboo (5), slide cylinder (4) cover is established handheld section of thick bamboo (1) outer wall bottom, slide cylinder (4) inner wall with handheld section of thick bamboo (1) inner wall sliding contact, slide cylinder (4) inner wall both sides respectively with two driving piece rigid coupling, slide cylinder (4) bottom surface rigid coupling has toper section of thick bamboo (5), the telescopic hole has been seted up to toper section of thick bamboo (5) bottom surface, the bottom surface of toper section of thick bamboo (5) with suction head (3) top surface butt, just telescopic hole inner wall with feed liquor spare outer wall sliding contact.
3. An electric pipette as defined in claim 2, wherein: the driving piece comprises a driving motor (6), the driving motor (6) is fixedly connected to the bottom surface of the inner cavity of the handheld cylinder (1), a strip-shaped hole (9) is formed in the inner wall of the handheld cylinder (1), one end of a screw rod (7) is fixedly connected to the output end of the driving motor (6), one end of a driving rod (8) is arranged at the other end of the screw rod (7) in a penetrating mode, the driving rod (8) is connected with the screw rod (7) through threads, the other end of the driving rod (8) penetrates through the strip-shaped hole (9) and is fixedly connected to the inner wall of the sliding cylinder (4), and the outer wall of the driving rod (8) is in sliding contact with the inner wall of the strip-shaped hole (9).
4. An electric pipette as defined in claim 3, wherein: the utility model provides a liquid inlet piece, including feed liquor pipe (10), feed liquor pipe (10) run through handheld section of thick bamboo (1) bottom surface, just feed liquor pipe (10) with handheld section of thick bamboo (1) bottom surface rigid coupling, the top outer wall cover of feed liquor pipe (10) is equipped with communicating pipe (11), communicating pipe (11) inner wall with feed liquor pipe (10) outer wall sliding contact, the top of communicating pipe (11) with negative pressure section of thick bamboo (2) intercommunication sets up, just negative pressure section of thick bamboo (2) with communicating pipe (11) rigid coupling, the bottom of feed liquor pipe (10) runs through the expansion hole, the bottom of feed liquor pipe (10) sets up to conical structure, the bottom of feed liquor pipe (10) with suction head (3) are pegged graft.
5. An electric pipette as defined in claim 4 wherein: the measuring and adjusting piece comprises two adjusting cylinders (12), the two adjusting cylinders (12) are fixedly connected to two sides of the top surface of the inner cavity of the handheld cylinder (1) respectively, one end of an adjusting rod (13) is fixedly connected to the output end of the adjusting cylinder (12), and the other end of the adjusting rod (13) is fixedly connected with the top surface of the negative pressure cylinder (2).
6. An electric pipette as defined in claim 5 wherein: the movable part comprises a piston rod (14), the bottom of the piston rod (14) sequentially penetrates through the reset part, the handheld cylinder (1) and the negative pressure cylinder (2), a piston block (15) is fixedly connected to the bottom surface of the piston rod (14), the piston block (15) is located in the negative pressure cylinder (2), a rubber ring (16) is fixedly connected to the peripheral surface of the piston block (15), and the peripheral surface of the rubber ring (16) is in sliding contact with the inner wall of the negative pressure cylinder (2).
7. An electric pipette as defined in claim 6 wherein: the reset piece comprises a reset cylinder (17), the reset cylinder (17) is fixedly connected to the top surface of the handheld cylinder (1), the piston rod (14) penetrates through the reset cylinder (17), a spring (18) is arranged in the reset cylinder (17), the spring (18) is sleeved on the piston rod (14), a reset ring (19) is fixedly connected to the outer wall of the piston rod (14), the reset ring (19) is positioned in the reset cylinder (17), and the spring (18) is arranged between the bottom surface of an inner cavity of the reset cylinder (17) and the reset ring (19).
8. An electric pipette as defined in claim 7 wherein: the top surface of the piston rod (14) is fixedly connected with a pressing ball (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311049214.3A CN117046536A (en) | 2023-08-21 | 2023-08-21 | Electric pipettor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311049214.3A CN117046536A (en) | 2023-08-21 | 2023-08-21 | Electric pipettor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117046536A true CN117046536A (en) | 2023-11-14 |
Family
ID=88668914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311049214.3A Pending CN117046536A (en) | 2023-08-21 | 2023-08-21 | Electric pipettor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117046536A (en) |
-
2023
- 2023-08-21 CN CN202311049214.3A patent/CN117046536A/en active Pending
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