Pipettor with self-cleaning function

Abstract

The utility model discloses a pipettor with a self-cleaning function, which comprises a pipetting structure, and a cleaning structure is arranged in the pipetting structure; the pipetting structure comprises a pipettor body, a piston button is movably arranged at the top of the pipettor body, and a pipette tip is arranged at the bottom of the pipettor body; the cleaning structure comprises a piston, the piston is fixedly connected with a piston rod under a piston button, and the piston is arranged in the liquid suction gun head; an air bag is arranged under the piston, and a spiral channel is fixedly connected under the air bag. According to the pipettor with the self-cleaning function, the spiral channel is arranged, the effect of accelerating the airflow of exhausted air can be achieved through the spiral channel, the air box is arranged, the effect of storing and collecting the airflow accelerated by the spiral channel is achieved through the air box, and the baffle is arranged, so that the baffle is convenient to clean. And the effect of uniformly dispersing the airflow in the air box is achieved through the baffle, and the effect of guiding the direction of the airflow is achieved through the baffle.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid transfer, in particular to a liquid transfer device with a self-cleaning function. Background Art

[0002] Micropipetting is an important part of experimental operation and on-site detection in the fields of medicine, chemistry, life sciences, etc. Its pipetting accuracy plays a vital role in project development, result detection, and performance stability. In particular, the rapid development of modern biology and medical technology has placed higher requirements on the accuracy of micropipetting. Pipette is usually used as an instrument for micropipetting. Pipette is also called pipette gun. It is a measuring tool that transfers liquid from the original container to another container within a certain range. Most of the common single-channel pipettes on the market are similar in structure. They are mainly made of engineering plastic shell and can be grasped with one hand. There is a piston pressing rod on the top and a gun head eject button on the side. The gun head is clamped by elastic material at the bottom, and the liquid is absorbed by the piston for migration. After the existing pipette completes the pipetting, the disposable gun head of the pipette is ejected by pressing the eject button, so a new gun head needs to be replaced each time pipetting is performed, resulting in material waste. Utility Model Content

[0003] The purpose of the utility model is to provide a pipette with a self-cleaning function to address the deficiencies of the prior art, so as to solve the problem proposed in the above background technology that after the pipetting is completed, the disposable pipette tip is ejected by pressing the ejection button, resulting in the need to replace a new pipette tip each time the pipetting is performed, thereby causing material waste.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a pipette with a self-cleaning function, comprising a pipetting structure, wherein a cleaning structure is provided inside the pipetting structure;

[0005] The pipetting structure comprises a pipette body, a piston button is movably arranged on the top of the pipette body, and a pipette tip is arranged on the bottom of the pipette body;

[0006] The cleaning structure comprises a piston, which is fixedly connected to a piston rod just below a piston button, and the piston is arranged inside the liquid suction gun head.

[0007] By adopting the above technical solution, by pressing the piston button, the pipette tip can temporarily store the liquid that needs to be pipetted in a small amount in the pipette tip, thereby achieving the effect of pipetting.

[0008] Preferably, an airbag is provided directly below the piston, and a spiral channel is fixedly connected directly below the airbag.

[0009] By adopting the above technical solution, the piston button is pressed to push the piston up and down in the liquid-pipetting gun head, thereby squeezing the airbag, causing the airbag to release gas and then pass through the spiral channel, thereby achieving the effect of accelerating the airflow.

[0010] Preferably, an air box is fixedly connected directly below the spiral channel.

[0011] By adopting the above technical solution, the airflow accelerated through the spiral channel is stored and collected by the arranged air box.

[0012] Preferably, the air box is provided with downwardly inclined air holes.

[0013] Preferably, a baffle is provided in the air box, and the top of the baffle is connected to the air hole.

[0014] By adopting the above technical solution, the gas stored in the air box passes through the inclined surface of the baffle to form a downward wind direction, and is discharged through the downwardly inclined air holes, thereby discharging the residual liquid on the inner wall of the liquid suction gun head.

[0015] Compared with the prior art, the beneficial effects of the utility model are: the pipette with self-cleaning function,

[0016] (1) This case has been provided with a cleaning structure to solve the problem that after the existing pipette is completed, the disposable pipette tip is ejected by pressing the ejection button, so a new pipette tip needs to be replaced each time the pipette is performed, thereby causing a waste of materials. When the pipetting operation is completed, the pipette tip is inserted into clean water, and the clean water is sucked into the pipette tip by pressing the piston button to clean the inner wall of the pipette tip. After the cleaning is completed, the clean water is discharged by pressing the piston button. At the same time, when the piston button is pressed, the piston will be driven downward to squeeze the airbag, so that the gas ejected downward by the airbag is accelerated through the spiral channel and collected in the air box. The gas collected in the air box will change the direction of the airflow through the baffle, and then be quickly discharged from the air hole, thereby fully squeezing the residual liquid inside the pipette tip, thereby playing a cleaning role. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the front cross-sectional structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the top view of the driving spiral channel of the utility model;

[0019] Figure 3 This is a schematic diagram of the cleaning structure of the utility model;

[0020] Figure 4 This is a schematic diagram of the air box, air holes and baffle structure of the utility model.

[0021] In the figure: 1. pipetting structure; 2. cleaning structure; 101. pipette body; 102. piston button; 103. pipette tip; 201. piston; 202. air pump; 203. spiral channel; 204. air box; 205. air hole; 206. baffle. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-4 , the utility model provides a technical solution: a pipette with a self-cleaning function;

[0024] like Figure 1 and Figure 2 As shown, it includes a pipetting structure 1, which includes a pipette body 101, a piston button 102 is movably provided on the top of the pipette body 101, and a pipette tip 103 is provided at the bottom of the pipette body 101, wherein the air in the pipette body 101 is discharged by pushing the piston button 102, and then the liquid is sucked in by the atmospheric pressure, and the liquid that needs to be micro-pipetting is sucked into the pipette tip 103, and then the liquid in the pipette tip 103 is pushed into the designated container by pushing the piston button 102.

[0025] like Figure 1 and Figure 2As shown, a cleaning structure 2 is provided inside the pipetting structure 1, which can not only play a cleaning role, but also fully discharge the residual liquid on the inner wall of the pipette tip 103 during the pipetting process. When the liquid in the pipette tip 103 is pushed into a specified container by pushing the piston button 102, the piston button 102 will move downward inside the pipette body 101, so that the piston rod provided below the piston button 102 moves downward, and the piston rod moves downward, driving the piston 201 fixedly connected thereto to move downward. The airbag 202 will be elastically squeezed, and airflow will be released during the elastic squeezing process of the airbag 202. The released airflow passes through the spiral channel 203, wherein one end of the spiral channel 203 is larger than the opening of the other end, so that the airflow is accelerated and discharged from the other end of the spiral channel 203 when passing through the spiral channel 203. The accelerated airflow will flow into the air box 204, and the baffle 206 will disperse the airflow downward and flow out from the air hole 205, thereby forming a fast downward wind, thereby flushing and discharging the liquid inside the pipette tip 103 and the residual liquid on the inner wall.

[0026] Furthermore, in the above scheme, after the pipetting is completed, the pipette tip 103 is inserted into clean water, and the clean water is repeatedly sucked into the pipette tip 103 and discharged by pressing the piston button 102, and the water on the inner wall is flushed out by using the cleaning structure 2. There is no need to replace a new pipette tip every time pipetting is performed, which is more energy-saving and environmentally friendly.

[0027] The directions or positional relationships indicated by terms such as "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings. They are merely simplified descriptions for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the protection content of the present invention.

[0028] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A pipette with a self-cleaning function, comprising a pipetting structure (1), characterized in that: The liquid transfer structure (1) is provided with a cleaning structure (2) inside; The liquid transfer structure (1) comprises a pipette body (101), a piston button (102) is movably arranged on the top of the pipette body (101), and a liquid pipette tip (103) is arranged on the bottom of the pipette body (101); The cleaning structure (2) comprises a piston (201), the piston (201) is fixedly connected to a piston rod directly below the piston button (102), and the piston (201) is arranged inside the liquid suction gun head (103); An air bag (202) is arranged directly below the piston (201), and a spiral channel (203) is fixedly connected directly below the air bag (202); An air box (204) is fixedly connected directly below the spiral channel (203); The air box (204) is provided with air holes (205) inclined downwards; A baffle (206) is provided in the air box (204), and the top of the baffle (206) is communicated with the air hole (205).

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