CN213408733U

CN213408733U - Pipette head

Info

Publication number: CN213408733U
Application number: CN202022049777.0U
Authority: CN
Inventors: 艾振江; 李猛
Original assignee: Luoyang Jiente Biotechnology Co ltd
Current assignee: Luoyang Jiente Biotechnology Co ltd
Priority date: 2020-09-18
Filing date: 2020-09-18
Publication date: 2021-06-11
Anticipated expiration: 2030-09-18

Abstract

The utility model discloses a pipettor rifle head, including pipette head, gas cushion, pipettor piston rod, stopper and spring, the top of pipette head sets up with the bottom laminating of fastening head, and the vice stack shell of fixedly connected with and main stack shell on the fastening head top, the inner wall upper portion movable mounting of main stack shell has the pipettor piston rod, and main stack shell fixed mounting is on the inner wall of main body shell to movable mounting has the connection shell on the lateral wall of main body shell, and the top edge movable mounting of connection shell has spacing bolt, stopper fixed mounting is at the top of main body shell, and the avris of stopper is provided with the connecting rod. This pipettor rifle head can freely switch between single track pipettor and multichannel pipettor, and the pipettor rifle head adopts the modular structure of assembling, can freely split to change suction head quantity, and the suction head of more specifications can be installed to the pipettor rifle head, the suitability is better.

Description

Pipette head

Technical Field

The utility model relates to a pipettor technical field specifically is a pipettor rifle head.

Background

The pipettor is a biological experimental instrument and widely used in the aspects of laboratory research, medical assay and the like, can accurately and quantitatively suck a solution to be detected, and can be divided into a single-channel pipettor and a multi-channel pipettor according to the number of suckers on a pipette head.

However, the existing pipette tip cannot be freely switched between a single-channel pipette and a multi-channel pipette, the number of suction heads of the pipette tip is fixed, the pipette tip is a whole body and cannot be detached, and the pipette tip can only be provided with the suction heads of specific specifications, so that the applicability is poor.

To the above-mentioned problem, need to carry out the innovative design on the basis of original pipettor rifle head urgently.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a pipettor rifle head to solve above-mentioned background art and propose, current pipettor rifle head can not freely switch between single track pipettor and multichannel pipettor, and the quantity of the suction head of pipettor rifle head is fixed, and the pipettor rifle head is a whole, can not the split, and the suction head of specific specification can only be installed to the pipettor rifle head, the relatively poor problem of suitability.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a pipettor rifle head, includes pipette head, gas cushion, pipettor piston rod, stopper and spring, the top of pipette head sets up with the bottom laminating of fastening head, and the vice stack shell of fixedly connected with and main stack shell on the fastening head top, the inner wall upper portion movable mounting of main stack shell has the pipettor piston rod, and main stack shell fixed mounting is on the inner wall of main body shell to movable mounting has the connection shell on the lateral wall of main body shell, and the top edge movable mounting of connection shell has spacing bolt, stopper fixed mounting is at the top of main body shell, and the avris of stopper is provided with the connecting rod sealing plug to connecting rod movable mounting is on the main body shell, and the bottom fixedly connected with of main body shell moreover, the one end and the connecting rod fixed connection of spring, and the other end fixed mounting of spring is on the fixed block.

Preferably, the lateral wall of fastening head is equidistantly provided with 4 bulge loops, and the bulge loop on the fastening head and the draw-in groove that sets up on the first inner wall of imbibition constitute the block structure.

Preferably, the auxiliary cylinder body is fixedly installed on the inner wall of the connecting shell, and the diameter of the auxiliary cylinder body is the same as that of the main cylinder body.

Preferably, the through holes which penetrate through the side walls of the auxiliary cylinder body, the main cylinder body, the connecting shell and the main shell are formed, the side walls of the connecting shell and the main shell are tightly attached, and the limiting blocks on the main shell are in threaded connection with the limiting bolts.

Preferably, the side wall of the air cushion block is provided with a convex block, the convex block on the air cushion block and the sliding grooves formed in the inner walls of the auxiliary cylinder body and the main cylinder body form a clamping sliding structure, and the air cushion block is attached to the inner walls of the auxiliary cylinder body and the main cylinder body.

Preferably, the diameter of the sealing plug is larger than that of the through hole in the main body shell, and the sealing plug is movably arranged in a sliding groove arranged in the main body shell.

Compared with the prior art, the beneficial effects of the utility model are that: the pipette head can be freely switched between a single-channel pipette and a multi-channel pipette, can be freely disassembled by adopting a modular assembly structure, so that the quantity of suction heads is changed, and the pipette head can be provided with suction heads of more specifications, and has better applicability;

1. the slide block on the side wall of the connecting shell and the chute on the main body shell form a clamping sliding structure, so that the connecting shell can be assembled with the main body shell, the limiting bolt penetrates through the limiting block by rotating the limiting bolt, the connecting shell is fixed, a single-channel pipettor is switched into a multi-channel pipettor, and the fastening head can adapt to liquid suction heads of different specifications by arranging convex rings of different diameters on the side wall of the fastening head at equal intervals;

2. during the use, through upwards pulling pipettor piston rod, make the inside pressure of main barrel body and vice barrel body reduce, drive the air cushion piece and move up, the inside decompression of fastening head of main barrel body and vice barrel body bottom, treat at this moment and examine the liquid by in the imbibition head.

Drawings

FIG. 1 is a schematic view of the overall external structure of the present invention;

FIG. 2 is a schematic view of a half-section structure of the main body case of the present invention;

fig. 3 is a schematic view of the installation structure of the sealing plug of the present invention;

FIG. 4 is a schematic view of the mounting structure of the air cushion block of the present invention;

fig. 5 is a schematic view of the mounting structure of the liquid suction head of the present invention.

In the figure: 1. a liquid suction head; 2. a fastening head; 3. an auxiliary cylinder body; 4. a main barrel body; 5. a connecting shell; 6. a main body case; 7. a pneumatic cushion block; 8. a pipettor piston rod; 9. a limit bolt; 10. a limiting block; 11. a connecting rod; 12. a spring; 13. a fixed block; 14. and (4) sealing the plug.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides a technical solution: a pipette tip, which comprises a pipette tip 1, an air cushion block 7, a pipette piston rod 8, a limiting block 10 and a spring 12, wherein the top of the pipette tip 1 is attached to the bottom of a fastening head 2, and the top of the fastening head 2 is fixedly connected with an auxiliary barrel body 3 and a main barrel body 4, the upper part of the inner wall of the main barrel body 4 is movably provided with a pipettor piston rod 8, and the main barrel body 4 is fixedly arranged on the inner wall of the main body shell 6, and the connecting shell 5 is movably installed on the side wall of the main body shell 6, the limit bolt 9 is movably installed at the edge of the top of the connecting shell 5, the limit block 10 is fixedly installed at the top of the main body shell 6, the side of the limit block 10 is provided with a connecting rod 11, and the connecting rod 11 is movably mounted on the body housing 6, and the bottom end of the body housing 6 is fixedly connected with a sealing plug 14, one end of a spring 12 is fixedly connected with the connecting rod 11, and the other end of the spring 12 is fixedly mounted on a fixing block 13.

The equidistant 4 bulge loops that are provided with on the lateral wall of fastening head 2, and the bulge loop on the fastening head 2 constitutes the block structure with the draw-in groove that sets up on the first 1 inner walls of imbibition, makes the first 1 of imbibition that different specifications can be fixed to fastening head 2.

The auxiliary barrel body 3 is fixedly arranged on the inner wall of the connecting shell 5, and the diameters of the auxiliary barrel body 3 and the main barrel body 4 are the same, so that the air pressure change in the auxiliary barrel body 3 and the main barrel body 4 is the same.

The through-hole that runs through is provided with on the lateral wall of vice stack shell 3, main stack shell 4, connection shell 5 and main part shell 6, and the lateral wall of connecting shell 5 and main part shell 6 closely laminates to be threaded connection between stopper 10 and the stop bolt 9 on the main part shell 6, with the inside intercommunication of vice stack shell 3 and main stack shell 4.

The lateral wall of the air cushion block 7 is provided with a convex block, the convex block on the air cushion block 7 and the chutes arranged on the inner walls of the auxiliary barrel body 3 and the main barrel body 4 form a clamping sliding structure, and the air cushion block 7 is attached to the inner walls of the auxiliary barrel body 3 and the main barrel body 4, so that the air cushion block 7 can move along with the change of air pressure.

The diameter of the sealing plug 14 is larger than that of the through hole on the main body shell 6, and the sealing plug 14 is movably arranged in a sliding groove arranged in the main body shell 6, so that the sealing plug 14 can completely block the through hole on the main body shell 6.

The working principle is as follows: when using this pipettor rifle head, at first refer to and refer to 1-4, when the user need use multichannel pipettor, aim at the spout on the main part shell 6 with the slider on the connecting shell 5 lateral wall and insert, until connecting shell 5 and the bottom surface parallel and level of main part shell 6, clockwise rotation limit bolt 9 after that, limit bolt 9 removes to stopper 10, and pass stopper 10, after limit bolt 9 supported connecting rod 11, continue to remove, the compression of spring 12, connecting rod 11 drives sealing plug 14 synchronous motion, until sealing plug 14 no longer the through-hole on the shutoff main part shell 6, main barrel 4 and the inside intercommunication of vice barrel 3, accomplish the conversion of single track pipettor to multichannel pipettor this moment.

Referring to fig. 1-5, through the screw thread that main barrel 4 upper end set up, install the pipettor rifle head in the pipettor, aim at pipettor 1 with the fastening head 2 of pipettor rifle head bottom perpendicularly, move down, draw-in groove on the pipettor 1 inner wall can form the block with the bulge loop on fastening head 2 this moment, pipettor 1 is fixed, will hold the pipettor and soak pipettor 1 in the liquid, upwards pull pipettor piston rod 8, the inside pressure of main barrel 4 and vice barrel 3 reduces in step, drive air cushion 7 and shift up, the inside synchronous decompression of fastening head 2, because the inside and outside pressure differential that produces of fastening head 2, external atmospheric pressure will await measuring in the pipettor head 1 of fastening head 2 bottom, when needs discharge liquid, it can to move piston rod 8 downwards.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a pipettor rifle head, includes pipette head (1), gas cushion (7), pipettor piston rod (8), stopper (10) and spring (12), its characterized in that: the liquid suction head is characterized in that the top of the liquid suction head (1) is attached to the bottom end of the fastening head (2), the top of the fastening head (2) is fixedly connected with an auxiliary barrel body (3) and a main barrel body (4), the upper portion of the inner wall of the main barrel body (4) is movably provided with a pipette piston rod (8), the main barrel body (4) is fixedly arranged on the inner wall of the main body shell (6), the side wall of the main body shell (6) is movably provided with a connecting shell (5), the top edge of the connecting shell (5) is movably provided with a limiting bolt (9), the limiting block (10) is fixedly arranged at the top of the main body shell (6), the side of the limiting block (10) is provided with a connecting rod (11), the connecting rod (11) is movably arranged on the main body shell (6), the bottom end of the main body shell (6) is fixedly connected with a sealing plug (14), one end of the spring (12) is fixedly connected with the connecting, and the other end of the spring (12) is fixedly arranged on the fixed block (13).

2. A pipette tip according to claim 1, characterized in that: the side wall of the fastening head (2) is provided with 4 convex rings at equal intervals, and the convex rings on the fastening head (2) and the clamping grooves formed on the inner wall of the liquid suction head (1) form a clamping structure.

3. A pipette tip according to claim 1, characterized in that: the auxiliary cylinder body (3) is fixedly arranged on the inner wall of the connecting shell (5), and the diameters of the auxiliary cylinder body (3) and the main cylinder body (4) are the same.

4. A pipette tip according to claim 1, characterized in that: the side walls of the auxiliary barrel body (3), the main barrel body (4), the connecting shell (5) and the main body shell (6) are provided with through holes, the side walls of the connecting shell (5) and the main body shell (6) are tightly attached, and a limiting block (10) on the main body shell (6) is in threaded connection with a limiting bolt (9).

5. A pipette tip according to claim 1, characterized in that: the side wall of the air cushion block (7) is provided with a convex block, the convex block on the air cushion block (7) and sliding grooves formed in the inner walls of the auxiliary barrel body (3) and the main barrel body (4) form a clamping sliding structure, and the air cushion block (7) is attached to the inner walls of the auxiliary barrel body (3) and the main barrel body (4).

6. A pipette tip according to claim 1, characterized in that: the diameter of the sealing plug (14) is larger than that of the through hole in the main body shell (6), and the sealing plug (14) is movably arranged in a sliding groove arranged in the main body shell (6).