CN214916215U

CN214916215U - Pipette easy to adjust liquid level

Info

Publication number: CN214916215U
Application number: CN202023281500.7U
Authority: CN
Inventors: 张鲁; 王翔宇; 郭小勇
Original assignee: Guangzhou Mingyutai Biotechnology Co ltd
Current assignee: Guangzhou Mingyutai Biotechnology Co ltd
Priority date: 2020-12-30
Filing date: 2020-12-30
Publication date: 2021-11-30
Anticipated expiration: 2030-12-30

Abstract

The utility model discloses a pipette easy to adjust the liquid level, which comprises a tube body, wherein the tube body is provided with a first opening at the top, a second opening at the bottom and a third opening at the upper part of the side surface; the third opening is connected with the injector in a sealing way; the second opening is in a conical shape with a narrow lower part and a wide upper part; the outer side wall of the tube body is provided with scales. The utility model provides a pipette absorbs the first opening in body top with the aurilave, makes the liquid level rise, plugs up first opening back with the finger, can use the syringe, with gaseous propelling movement in the syringe in through third opening admission pipe body to slowly controllably reduce liquid level height in the body, even the liquid level reduces too much, also can remedy through extracting the gaseous upper portion in the body with the syringe, and need not begin from the beginning.

Description

Pipette easy to adjust liquid level

Technical Field

The utility model relates to a laboratory equipment technical field especially relates to an easily adjust pipette of liquid level.

Background

The existing pipette generally uses an aurilave to suck at the top of the pipette, so that the liquid level in the pipette is lifted, the top of the pipette is pressed by fingers, and the liquid level in the pipette is reduced to a preset scale in a slow deflation mode, so that quantitative liquid is accurately obtained.

However, due to the technical irregularity of users, the liquid level in the tube is easily lowered too much, and at this time, the pipette needs to be sucked from the top of the aurilave again, so that the steps are troublesome and the efficiency is reduced.

SUMMERY OF THE UTILITY MODEL

In order to overcome the above-mentioned shortcoming of prior art, the utility model aims at providing an easily adjust liquid level's pipette aims at solving and will begin from the beginning after current pipette reduces liquid level misoperation, remedies the problem that takes time.

The utility model provides a technical scheme that its technical problem adopted is:

a pipette easy to adjust the liquid level comprises a tube body, wherein the top of the tube body is provided with a first opening, the bottom of the tube body is provided with a second opening, and the upper part of the side surface of the tube body is provided with a third opening; the third opening is connected with the injector in a sealing way; the second opening is in a conical shape with a narrow lower part and a wide upper part; the outer side wall of the tube body is provided with scales.

As an improvement, a one-way vent valve is arranged below the first opening inside the tube body, and allows gas in the tube body to pass upwards in a one-way mode, so that the liquid level in the tube body is prevented from leaking due to accidental air leakage.

As a modification, the third opening is detachably connected with the injector through a hose; the hose is provided with an openable sealing valve.

As an improved scheme, the injector comprises an outer cylinder and a piston rod which is connected with the outer cylinder in a sliding way, wherein the outer cylinder is provided with more than two first fixing rings which are axially symmetrical with each other along the axis of the outer cylinder on the outer side surface; a second fixing ring is arranged at one end of the piston rod, which is far away from the outer cylinder body; the first fixing ring and the second fixing ring can accommodate fingers to pass through.

As a modification, the inner surface of the pipe body is provided with a polytetrafluoroethylene coating.

As an improvement, the tube body is made of transparent polystyrene.

As a refinement, inside the tube, between the first opening and the one-way vent valve, a filter cotton layer is provided.

As an improvement scheme, the outer surface of the pipe body is sleeved with an anti-rolling part, and the anti-rolling part is in an equilateral triangle shape in the horizontal direction.

Compared with the prior art, the beneficial effects of the utility model are that:

1) the utility model provides a pipette absorbs the first opening in body top with the aurilave, makes the liquid level rise, plugs up first opening back with the finger, can use the syringe, with gaseous propelling movement in the syringe in through third opening admission pipe body to slowly controllably reduce liquid level height in the body, even the liquid level reduces too much, also can remedy through extracting the gaseous upper portion in the body with the syringe, and need not begin from the beginning.

2) Inside being equipped with one-way vent valve in first opening below of body, one-way vent valve allows the one-way up passage of gaseous in the body, uses ear washing ball to need not the finger after improving the liquid level like this and blocks up first opening and just can prevent the liquid level and reduce, has both avoided misoperation, has also liberated user's finger.

3) The injector is detachably connected with the third opening through the hose, and the hose is provided with the openable sealing valve, so that the more suitable injector can be quickly replaced according to experimental needs, for example, the liquid level needs to be accurately controlled, and the smaller injector can be used.

4) The first fixing ring and the second fixing ring which are matched with fingers are arranged on the cylinder body and the piston rod of the injector, so that a user can conveniently complete the push-pull operation of the injector with one hand.

5) The inner surface of the pipe body is provided with the polytetrafluoroethylene coating which is acid-base resistant and resistant to various organic solvents, the adhesion force of liquid can be reduced, and experimental errors caused by the fact that the liquid adheres to the inner wall of the pipe body are reduced.

6) First opening with between the one-way vent valve, be equipped with the filter pulp layer, when using the pipette to the liquid that has the solid particle of suspension, can avoid the maloperation to inhale the pollution that the aurilave leads to with the solid particle.

7) The outer surface of the pipe body is sleeved with an anti-rolling piece, and the anti-rolling piece is in an equilateral triangle shape in the horizontal direction. When not having the pipette rack, can place the pipette on horizontal desktop, prevent that the side and the horizontal plane contact of rolling piece prevent that the pipette from rolling down the desktop and damaging.

Drawings

Fig. 1 is a schematic diagram of a cross-sectional structure of a pipette with easy adjustment of liquid level according to the present invention.

Fig. 2 is a schematic structural view of the tube and the anti-rolling member in a top view of the present invention.

Wherein, 1: a pipe body; 2: a first opening; 3: a second opening; 4: a third opening; 5: a one-way vent valve; 6: a hose; 7: an outer cylinder; 8: a piston rod; 9: a first retaining ring; 10: a second retaining ring; 11: a filter cotton layer; 12: an anti-rolling member.

Detailed Description

The invention will now be further described with reference to the accompanying drawings, in which:

the first embodiment is as follows:

as shown in fig. 1 and 2, a pipette with easy liquid level adjustment comprises a transparent polystyrene tube 1, wherein the tube 1 is provided with a first opening 2 at the top, a second opening 3 at the bottom, and a third opening 4 at the upper part of the side; the third opening 4 is detachably connected with the injector in a sealing way through a hose 6; the hose 6 is provided with an openable sealing valve. The second opening 3 is in a conical shape with a narrow lower part and a wide upper part; the inner surface of the pipe body 1 is provided with a polytetrafluoroethylene coating. The outer side wall of the pipe body 1 is provided with scales. The one-way vent valve 5 is arranged below the first opening 2 inside the tube body 1, and the one-way vent valve 5 allows gas in the tube body 1 to pass upwards in a one-way mode so as to prevent the liquid level in the tube body 1 from leaking due to accidental air leakage. And a filter cotton layer is arranged between the first opening 2 and the one-way vent valve 5.

The injector comprises an outer cylinder body 7 and a piston rod 8 which is connected with the outer cylinder body 7 in a sliding way, wherein the outer cylinder body 7 is provided with more than two first fixing rings 9 which are axially symmetrical with the axis of the outer cylinder body 7 on the outer side surface; a second fixing ring 10 is arranged at one end of the piston rod 8 far away from the outer cylinder 7; the first fixing ring 9 and the second fixing ring 10 can accommodate fingers to pass through.

The outer surface cover of body 1 is equipped with anti-roll member 12, anti-roll member 12 is equilateral triangle on the horizontal direction.

In conclusion, after reading the document of the present invention, the ordinary skilled in the art can make other various corresponding conversion schemes without creative mental labor according to the technical scheme and technical idea of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A pipette easy to adjust the liquid level is characterized by comprising a tube body (1), wherein the top of the tube body (1) is provided with a first opening (2), the bottom of the tube body is provided with a second opening (3), and the upper part of the side surface of the tube body is provided with a third opening (4); the third opening (4) is connected with the injector in a sealing way; the second opening (3) is in a conical shape with a narrow lower part and a wide upper part; the outer side wall of the tube body (1) is provided with scales.

2. The pipette with easy liquid level adjustment as set forth in claim 1, characterized in that a one-way vent valve (5) is provided inside the tube body (1) below the first opening (2), the one-way vent valve (5) allowing one-way upward passage of gas inside the tube body (1) to prevent the liquid level inside the tube body (1) from leaking out due to an accidental air leakage.

3. A pipette allowing easy adjustment of the liquid level as set forth in claim 2, characterized in that inside the tubular body (1), between the first opening (2) and the one-way venting valve (5), there is a layer of filter cotton (11).

4. The pipette with easy adjustment of the liquid level according to claim 1, characterized in that the third opening (4) is detachably connected to the syringe by means of a hose (6); the hose (6) is provided with a sealing valve which can be opened and closed.

5. A pipette with easy level adjustment according to claim 1, characterized in that the syringe comprises an outer cylinder (7) and a piston rod (8) slidably connected in the outer cylinder (7), the outer cylinder (7) being provided on the outer side with two or more first fixing rings (9) axially symmetrical to the axis of the outer cylinder (7); and a second fixing ring (10) is arranged at one end of the piston rod (8) far away from the outer cylinder body (7).

6. A pipette with easy level adjustment according to claim 1, characterized in that the inner surface of the tube (1) is provided with a teflon coating.

7. A pipette with easy level adjustment according to claim 1, characterized in that the tubular body (1) is made of transparent polystyrene.

8. The pipette with easy liquid level adjustment as set forth in claim 1, wherein the outer surface of the tube body (1) is sleeved with an anti-rolling member (12), and the anti-rolling member (12) is in an equilateral triangle shape in the horizontal direction.