Pipetting gun

Abstract

The invention relates to a pipetting gun. The pipetting gun comprises a gun body and a gun head assembly, and the gun head assembly is connected with the gun body in a clamping mode. The gun body is provided with a cover plate, a control assembly, a piston rod, a piston, a piston cavity and a clamping seat. The clamping seat is connected with the piston through the piston cavity, and the piston rod is fixedly connected with the control assembly. The control assembly is connected to the cover plate in a sleeving mode, and the cover plate is fixedly connected with the gun body. According to thepipetting gun, the gun head assembly is connected with the gun body in a clamping mode, a clamping connection structure is convenient to disassemble and install, and it is convenient for a user to replace the gun head assembly as needed; and the piston rod is fixedly connected with the control assembly, the control assembly is connected to the cover plate in a sleeving mode, and the cover plate isfixedly connected with the gun body, so that the user can push the piston rod to move up and down by using the control assembly to realize the work of transferring liquid by the pipetting gun, no manual adjustment of the pipetting gun is required, and thus the operation precision is higher.

Description

technical field [0001] The invention relates to the technical field of experimental equipment, in particular to a pipette gun. Background technique [0002] Pipette gun is a kind of pipette, which is often used for pipetting a small amount or micro-volume of liquid in the laboratory. In the process of biological, medical and chemical experiments, it is necessary to repeatedly use a large number of pipette guns. Currently, it is used for routine pipetting in experiments. The pipette tip of the device, the pipette gun of different specifications is equipped with different sizes of tips, and the shapes produced by different manufacturers are also slightly different. When it is necessary to replace the tip, it is often difficult, so the user needs to prepare many kinds. The standard pipette gun, so it brings a lot of inconvenience to use, and the general pipette gun is manually operated to absorb or unload the liquid, and it is necessary to manually adjust the amount of suction ...

AI Technical Summary

Problems solved by technology

[0002] Pipette gun is a kind of pipette, which is often used for pipetting a small amount or micro-volume of liquid in the laboratory. In the process of biological, medical and chemical experiments, it is necessary to repeatedly use a large number of pipette guns. Currently, it is used for routine pipetting in experiments. The pipette tip of the device, the pipette gun of different specifications is equipped with different sizes of tips, and the shapes produced by different manufacturers are also slightly different. When it is necessary to replace the tip, it is often difficult, so the user needs to prepare many kinds. The standard pipette gun, so it brings a lot of inconvenience to use, and the general pipette gun is manually operated to absorb or unload the liquid, and it is necessary to manually adjust the amount of suction and unloading during use, manual adjustment It is cumbersome and laborious, and cannot be quickly adjusted to the scale required by the experiment, and it is a huge test for the user's proficiency and operating technology, resulting in low working accuracy of the pipette gun, and it is difficult to control the speed of manual suction of liquid. If it is, it may lead to sucking back, which will not only pollute the liquid but also corrode and pollute the pipette gun, which will shorten the service life of the pipette gun. Reciprocating movement easily brings external impurities into the gun body, causing contamination of the gun body, and even affects the sealing performance between the piston and the gun body, so its sealing effect is poor

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