Sample pipettor for aquatic product detection

Abstract

The invention relates to the technical field of detection equipment, and discloses a sample pipettor for aquatic product detection, the sample pipettor comprises a shell, a suction tube and a first piston, a suction cavity communicated with the suction tube is arranged below the first piston, and an adjusting cavity filled with hydraulic oil is arranged above the first piston. According to the sample pipettor for aquatic product detection, rough adjustment is conducted through the adjusting rod, then precision adjustment is conducted through the first adjusting plug, on one hand, the precision of initial setting is guaranteed, the operation amount during initial setting can be reduced, on the other hand, the requirements for high-precision threads and transmission gears are reduced, the overall cost is reduced, moreover, the pipettor is divided into two parts through the plunger, when the left part deforms, the position of the initial scale is changed and is very easy to find, and when the right part deforms, the influence can be eliminated by adjusting the reset piece before the pipettor is used, so that the correctness of an experimental result is ensured.

Description

technical field [0001] The invention relates to the technical field of testing equipment, in particular to a sample pipette for testing aquatic products. Background technique [0002] The pipette is also called a micro-sampler. It is often used to pipette a small amount or a small amount of liquid in the laboratory. It is a high-precision measurement tool. Its basic structure mainly includes a display window, a capacity adjustment component, a piston, a seal, and a suction tube. And the suction head and other parts. [0003] When in use, the stroke of the piston is controlled by turning the spring of the plunger, and then the liquid component absorbed is controlled. In order to improve the accuracy, the compression amount of the spring of the plunger is determined by the high-precision thread. The higher the precision, the more the thread rotates one circle. The smaller the amount of movement, therefore, when one adjustment is completed, it needs to rotate many circles to r...

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Problems solved by technology

[0004] Secondly, due to the deviation of a certain part of the pipette, the pipetting volume will be inaccurate, which will affect the experimental results. For example, the irreversible deformation of the spring, the uneven movement of the piston and the piston cylinder, etc. will lead to the experimental results. Deviations occur, and when these phenomena occur, the naked eye cannot detect them in time, so the pipette needs to be calibrated regularly during use, and the calibration of the pipette is extremely cumbersome, which increases the cost of the staff

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