Servo type burette

Abstract

The invention discloses a servo type burette. The burette comprises a housing and a liquid storage cylinder, wherein a burette motor is arranged in the housing; a driving gear is fixed on the output shaft of the burette motor; a driven gear driven by the driving gear is arranged on the driving gear and is fixed at the inner part of the housing; a cylindrical cavity coaxial with the driven gear is formed in the central part of the driven gear; an inner thread is formed in the inner wall of the cylindrical cavity; a straight pole penetrates through the cylindrical cavity of the driven gear and comprises a threaded section, a first polished rod section and a second polished rod section; the threaded section of the straight pole is matched with the inner thread of the cylindrical cavity in a threaded fit manner; the upper end of the liquid storage cylinder is fixedly clamped at the inner part of the housing; the first polished rod section and the second polished rod section of the straight pole are inserted into the inner cavity of the liquid storage cylinder. The servo type burette has the advantages that the burette can automatically extract a certain amount of liquid and is high in liquid-extracting precision.

Description

technical field [0001] The invention relates to a servo-type burette. Background technique [0002] In the transportation and storage of grain, food, etc., it is often necessary to carry out random sampling and testing in order to accurately grasp the quality of grain, find grain quality problems in time, and take corresponding solutions. At present, it is often necessary to carry out genetic analysis on some grains or foods to confirm whether they are genetically modified grains or foods. In the process of this genetic analysis, the sampling requirements for grain or food are relatively strict, and the sampled samples must be pulverized (solid samples), added reagents, centrifuged, heated or cooled before they can be tested and analyzed. [0003] During the detection process, it is often necessary to quantitatively extract liquid samples. The traditional method is manual processing, and the staff uses graduated cylinders, burettes and other equipment to obtain liquid samp...

AI Technical Summary

Problems solved by technology

When reading the numbers manually, if the staff’s line of sight cannot be level with the liquid surface, there will be a certain error in taking the liquid, and it is difficult to ensure that the amount of liquid taken is accurate

In short, this method of manual liquid extraction has problems such as time-consuming and laborious, low efficiency of liquid extraction, low accuracy of liquid extraction volume, and high labor intensity.

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