CN213886237U

CN213886237U - Length-adjustable micropipettor

Info

Publication number: CN213886237U
Application number: CN202022221720.4U
Authority: CN
Inventors: 杨志隆
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-10-09
Filing date: 2020-10-09
Publication date: 2021-08-06
Anticipated expiration: 2030-10-09

Abstract

The utility model discloses a length adjustable's micropipettor, concretely relates to pipettor technical field, including the pipettor host computer, and the bottom fixedly connected with of pipettor host computer moves the liquid pole, the bottom mounting that moves the liquid pole is equipped with the inner tube, the outside that moves the liquid pole is equipped with the cover barrel, and the bottom mounting of cover barrel is equipped with the stopper, the stopper link up with the cover barrel mutually, the surface of inner tube is equipped with first lantern ring and second lantern ring respectively along the both ends of vertical direction cover, first lantern ring and inner tube fixed connection, second lantern ring and inner tube sliding connection, fixedly connected with spring between first lantern ring and the second lantern ring. Whole pipettor is through self adjustable structure for the part that the rifle head was connected to the pipettor is difficult for touching the sample, and follow-up cleaning process is convenient, is difficult for influencing the purity of follow-up sample, and work load reduces, and it is comparatively convenient to use.

Description

Length-adjustable micropipettor

Technical Field

The utility model relates to a pipettor technical field, concretely relates to length adjustable's micropipettor.

Background

Pipettors are commonly used for transferring a small amount of or trace liquid in a laboratory, have different specifications, are matched with pipette guns with different sizes to use pipette heads with different sizes, have slightly different shapes produced by different manufacturers, but have basically consistent working principles and operation methods, belong to precise instruments, are carefully used and stored, and are prevented from being damaged and the measuring range of the pipettors is prevented from being influenced;

when an existing pipette is used for actual work, for example, when the pipette is used for pipetting in a test tube, the part, connected with a gun head, of the pipette is often polluted, the purity of a subsequent sampling sample is easily affected, a cleaning procedure needs to be added if subsequent use is desired, the workload is increased, and the use is inconvenient.

SUMMERY OF THE UTILITY MODEL

Therefore, the utility model provides a length adjustable's micropipettor aims at solving current pipette in the real work, for example the pipettor when moving liquid in the test tube, the part that the rifle head was connected to the pipettor is often contaminated, easily influences the purity of follow-up sample, if want follow-up use then need increase clean process, and work load increases, awkward problem.

In order to achieve the above object, the present invention provides the following technical solutions:

a length-adjustable micropipettor comprises a pipette host, wherein a push button is inserted into the top end of the pipette host, a liquid transferring rod is fixedly connected to the bottom end of the pipette host, a built-in pipe is fixedly arranged at the bottom end of the liquid transferring rod, a sleeve part is arranged outside the liquid transferring rod, a limiting block is fixedly arranged at the bottom end of the sleeve part and communicated with the sleeve part, convex rods are arranged on the outer side walls of the two sides of the liquid transferring rod along the radial direction, a sliding groove embedded with the convex rods is formed in the inner side wall of the sleeve part, a first sleeve ring and a second sleeve ring are respectively sleeved on the outer surface of the built-in pipe along the two ends of the vertical direction, the first sleeve ring is fixedly connected with the built-in pipe, the second sleeve ring is slidably connected with the built-in pipe, a spring is fixedly connected between the first sleeve ring and the second sleeve ring, and supporting rods are arranged on the inner side walls of the two sides of the sleeve part close to the second sleeve ring, and two bracing pieces all cup joint with the second cover ring mutually, the bottom of inner catheter is connected with the pipette.

Furthermore, the bottom of liquid transfer pole all is equipped with the abaculus along horizontal both sides, the caulking groove that inlays the dress with the abaculus is seted up respectively to the both sides inside wall of sleeve part.

Furthermore, a hanging lug is fixedly arranged on one side, close to the push button, of the top end of the liquid transfer device main machine.

Furthermore, the outer side walls of the two radial sides of the liquid transfer device main machine are provided with anti-slip pads.

Furthermore, the bottom end of the built-in pipe is provided with a thread part, and the built-in pipe is connected with a suction nozzle through the thread part.

Furthermore, the suction nozzle is a silica gel body, and the inside of the suction nozzle is hollow and is communicated with the built-in pipe.

Further, the outer side wall of the suction nozzle is abutted to the inner side wall of the pipette.

Further, both of the support rods are arranged as L-shaped rods and are symmetrical about a vertical central axis of the inner catheter.

The utility model has the advantages of as follows:

1. through the cover barrel that sets up, aim at test tube top opening part with the stopper of cover barrel bottom and carry out the overlap joint, afterwards, push down the pipettor host computer, make the cover barrel move the liquid pole upward relatively, the built-in pipe exposes, the pipette of built-in pipe tip stretches into the inside of test tube, the built-in pipe does not move the liquid operation in what the inside wall of test tube contacted, afterwards, upwards lift up the pipettor host computer, the stopper of cover barrel bottom breaks away from the contact with the test tube, the spring resets, the cover barrel resumes to original state thereupon, then, take off the pipette of suction nozzle department, change immediately the suction nozzle can, whole pipettor is through self adjustable structure, make the part that the rifle head was connected to the pipettor be difficult for contacting the sample, follow-up cleaning is convenient, the purity of follow-up sample is difficult to influence, the work load reduces, it is comparatively convenient to use.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.

The structure, ratio, size and the like shown in the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention has no technical essential significance, and any structure modification, ratio relationship change or size adjustment should still fall within the scope which can be covered by the technical content disclosed by the present invention without affecting the efficacy and the achievable purpose of the present invention.

Fig. 1 is a front view provided by the present invention;

fig. 2 is a schematic view of the overall structure of the liquid transfer rod provided by the present invention;

fig. 3 is a perspective view of a sleeve member provided by the present invention;

fig. 4 is an enlarged view of the portion a in fig. 2 according to the present invention;

fig. 5 is an enlarged view of the structure of the portion B in fig. 1 according to the present invention;

in the figure: 1. a pipettor host; 2. pushing the button; 3. a pipetting rod; 4. a sleeve member; 5. a build-in tube; 6. a limiting block; 7. a first collar; 8. a second collar; 9. a support bar; 10. a spring; 11. a chute; 12. a nose bar; 13. caulking grooves; 14. an insert block; 15. a suction nozzle; 16. a pipette; 17. a threaded portion; 18. hanging a lug; 19. a non-slip mat.

Detailed Description

The present invention is described in terms of specific embodiments, and other advantages and benefits of the present invention will become apparent to those skilled in the art from the following disclosure. 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 the attached drawings 1-5 of the specification, the length-adjustable micropipettor of the embodiment comprises a pipette host 1, a push button 2 is inserted into the top end of the pipette host 1, a pipette rod 3 is fixedly connected to the bottom end of the pipette host 1, a built-in tube 5 is fixedly arranged at the bottom end of the pipette rod 3, a sleeve member 4 is arranged outside the pipette rod 3, a limit block 6 is fixedly arranged at the bottom end of the sleeve member 4, the limit block 6 is communicated with the sleeve member 4, convex rods 12 are arranged on the outer side walls of the pipette rod 3 along the radial direction, a chute 11 embedded with the convex rods 12 is arranged on the inner side wall of the sleeve member 4, a first sleeve ring 7 and a second sleeve ring 8 are respectively sleeved at the two ends of the outer surface of the built-in tube 5 along the vertical direction, the first sleeve ring 7 is fixedly connected with the built-in tube 5, and the second sleeve ring 8 is slidably connected with the built-in tube 5, fixedly connected with spring 10 between first lantern ring 7 and the second lantern ring 8, all be equipped with bracing piece 9 on the both sides inside wall that the cover barrel 4 is close to second lantern ring 8 department, and two bracing pieces 9 all cup joint mutually with second lantern ring 8, the bottom of inner tube 5 is connected with pipette 16.

Furthermore, the bottom of liquid transfer pole 3 all is equipped with abaculus 14 along horizontal both sides, the caulking groove 13 that inlays the dress mutually with abaculus 14 is seted up respectively to the both sides inside wall of sleeve part 4, guarantees the connectivity of sleeve part 4 and liquid transfer pole 3 structure.

Furthermore, a hanging lug 18 is fixedly arranged on one side, close to the push button 2, of the top end of the pipette host 1, so that the host can be conveniently hung.

Furthermore, the outer side walls of the two radial sides of the liquid transfer device main body 1 are provided with anti-slip pads 19, so that the stability of the liquid transfer device main body 1 in a handheld mode is facilitated.

Further, the bottom end of the built-in pipe 5 is provided with a thread part 17, and the built-in pipe 5 is connected with a suction nozzle 15 through the thread part, so that the built-in pipe can be detached and replaced.

Further, the suction nozzle 15 is a silicon colloid, the inside of the suction nozzle 15 is hollow and is communicated with the built-in pipe 5, the structure flexibility is good, and the suction nozzle can adapt to pipettes 16 with different specifications.

Further, the outer side wall of the suction nozzle 15 abuts against the inner side wall of the pipette 16.

Further, both said support rods 9 are arranged as L-shaped rods and are symmetrical with respect to the vertical middle axis of the inner casing tube 5 for connecting the sleeve member 4 with the second collar 8.

The implementation scenario is specifically as follows: firstly, the external thread of the thread part 17 of the built-in tube 5 is connected with the suction nozzle 15, the external part of the suction nozzle 15 is sleeved into a disposable pipette 16, then the limiting block 6 at the bottom end of the sleeve member 4 is aligned with the opening at the top end of the test tube for overlapping, then the pipette host 1 is pressed down, so that the sleeve member 4 connected with the limiting block 6 overlapped at the top end of the test tube and the pipette rod 3 slide relatively, the inner side wall of the sleeve member 4 is clamped with the second collar 8 sleeved outside the built-in tube 5 through two support rods 9, the sleeve rod 4 moves upwards at the position on the built-in tube 5 through the support rod 9 while sliding relatively relative to the pipette rod 3 and the built-in tube 5, the spring 10 between the second collar 8 and the first collar 7 is compressed, the built-in tube 5 is exposed during the process that the sleeve member 4 moves upwards, the end part of the built-in tube 5 extends into the test tube through the pipette 16 connected with the suction nozzle 15, the push button 2 is pressed to enable the built-in pipe 5 to generate suction force, so that a sample in the test tube is sucked by the pipette 16, the built-in pipe 5 is not contacted with the inner side wall of the test tube, after the operation is finished, the pipette main machine 1 is lifted upwards, the limiting block 6 at the bottom end of the sleeve part 4 is separated from the contact with the test tube, the spring 10 is reset, the sleeve part 4 is recovered to the original state, then, the pipette 16 at the suction nozzle 15 is taken down, and the suction nozzle 15 is replaced immediately;

whole pipettor is through self adjustable structure for the part that the rifle head was connected to the pipettor is difficult for touching the sample, and follow-up cleaning process is convenient, is difficult for influencing the purity of follow-up sample, and work load reduces, and it is comparatively convenient to use.

The working principle is as follows: firstly, aligning a limiting block 6 to an opening at the top end of a test tube for overlapping, then, pressing down the pipettor host 1 to enable a sleeve member 4 and a liquid transfer rod 3 to slide relatively, pulling a second lantern ring 8 to move upwards on the built-in tube 5 through a support rod 9 while the sleeve rod 4 slides relatively to the liquid transfer rod 3 and the built-in tube 5, compressing a spring 10 between the second lantern ring 8 and a first lantern ring 7, exposing the built-in tube 5 in the process of moving the sleeve member 4 upwards, enabling a pipette 16 at the end part of the built-in tube 5 to extend into the test tube, enabling the built-in tube 5 to generate suction force by pressing a push button 2, enabling a sample in the test tube to be sucked by the pipette 16, enabling the built-in tube 5 not to be contacted with the inner side wall of the test tube, after the operation is finished, lifting up the pipettor host 1, enabling the limiting block at the bottom end of the sleeve member 4 to be separated from the test tube, resetting the spring 10, and enabling the sleeve member 4 to return to the original state, then, the pipette 16 at the suction nozzle 15 is taken down, and the suction nozzle 15 is replaced immediately, so that the whole pipette is not easy to contact with a sample through the self-adjustable structure, the part of the pipette connected with the pipette head is not easy to contact with the sample, the subsequent cleaning treatment is convenient, the purity of the subsequent sampling sample is not easy to influence, the workload is reduced, and the use is convenient.

Although the invention has been described in detail with respect to the general description and the specific embodiments, it will be apparent to those skilled in the art that modifications and improvements can be made based on the invention. Therefore, such modifications and improvements are intended to be within the scope of the invention as claimed.

Claims

1. The utility model provides a length adjustable's micropipettor, includes pipettor host computer (1), the top of pipettor host computer (1) is pegged graft and is had push button (2), and the bottom fixedly connected with of pipettor host computer (1) moves liquid pole (3), its characterized in that: the bottom fixing of the liquid transferring rod (3) is provided with a built-in pipe (5), the outer part of the liquid transferring rod (3) is provided with a sleeve part (4), the bottom fixing of the sleeve part (4) is provided with a limiting block (6), the limiting block (6) is communicated with the sleeve part (4), the liquid transferring rod (3) is provided with a convex rod (12) along the outer side walls of the two radial sides, the inner side wall of the sleeve part (4) is provided with a sliding groove (11) embedded with the convex rod (12), the outer surface of the built-in pipe (5) is respectively sleeved with a first lantern ring (7) and a second lantern ring (8) along the two ends in the vertical direction, the first lantern ring (7) is fixedly connected with the built-in pipe (5), the second lantern ring (8) is slidably connected with the built-in pipe (5), a spring (10) is fixedly connected between the first lantern ring (7) and the second lantern ring (8), the inner side walls of the sleeve part (4) close to the second lantern ring (8) are provided with supporting rods (9), and two bracing pieces (9) all cup joint with second lantern ring (8), the bottom of inner catheter (5) is connected with pipette (16).

2. A length-adjustable micropipette as claimed in claim 1, wherein: the bottom of the liquid transfer rod (3) is provided with embedded blocks (14) along two transverse sides, and the inner side walls of two sides of the sleeve part (4) are respectively provided with embedded grooves (13) embedded with the embedded blocks (14).

3. A length-adjustable micropipette as claimed in claim 1, wherein: a hanging lug (18) is fixedly arranged on one side, close to the push button (2), of the top end of the pipette host (1).

4. A length-adjustable micropipette as claimed in claim 1, wherein: the outer side walls of two radial sides of the liquid transfer device main body (1) are respectively provided with an anti-slip pad (19).

5. A length-adjustable micropipette as claimed in claim 1, wherein: the bottom end of the built-in pipe (5) is provided with a thread part (17), and the built-in pipe (5) is connected with a suction nozzle (15) through the thread part and the thread.

6. A length-adjustable micropipette according to claim 5, wherein: the suction nozzle (15) is a silica gel body, and the inside of the suction nozzle (15) is hollow and is communicated with the built-in pipe (5).

7. A length-adjustable micropipette as claimed in claim 6, wherein: the outer side wall of the suction nozzle (15) is abutted with the inner side wall of the pipette (16).

8. A length-adjustable micropipette as claimed in claim 1, wherein: both support rods (9) are arranged as L-shaped rods and are symmetrical with respect to the vertical middle axis of the inner tube (5).