Dosage adjustment device of pipettor

Abstract

The invention discloses a dosage adjustment device of a pipettor. The dosage adjustment device of the pipettor comprises a round tube part provided with a tooth punching end, double-layer gears and a digit wheel, wherein the tooth punching end of the round tube part is meshed with a small tooth layer of the double-layer gears, a big tooth layer of the double-layer gears is meshed with the digit wheel, the inside of the round tube part drives a sliding rod to slide, and anti-skid threads are arranged at the other end, opposite to the tooth punching part, of the outside of the round tube part and are used for rotation of the outside to adjust a dosage. Because a plurality of compact gears are meshed, on the premise that accurate dosage adjustment is ensured, strength for rotating adjustment is greatly reduced. Great strength is not needed, the dosage can be adjusted easily and accurately, the whole adjustment process is smooth in motion, and the dosage adjustment device of the pipettor is suitable for routine work carried out every day.

Description

Technical field [0001] The invention relates to the field of micro-liquid-taking instruments, in particular to a dose adjusting device of a pipette. Background technique [0002] In hospital laboratories, many experiments in the chemical and biological industries often face the need to detect and process large quantities of samples, or require multiple detection reagents. Pipette is a small-volume liquid transfer and sample addition device commonly used in such experiments. It is used to draw samples or reagents in experimental operations, especially in the use of 96-well plates more frequently. During experimental operations, the operator needs to adjust the dose of the pipette according to the amount of liquid to be drawn, usually the pipette The adjustment of the digital pulley is to drive the push rod by rotating the external digital pulley to cause the internal solvent to change to absorb the corresponding dose of solution. Since the setting position of the digital pulley is...

AI Technical Summary

Problems solved by technology

[0002] Many experiments in hospital laboratories, chemical and biological industries often face the need to detect and process a large number of samples, or require the operation of multiple detection reagents. The pipette is a small-capacity liquid transfer and sampling device commonly used in such experiments. , used to draw samples or reagents in experimental operations, especially more frequently in the use of 96-well plates. During experimental operations, the operator needs to adjust the dose of the pipette according to the different doses of the liquid drawn. Usually, the pipette The adjustment is by rotating the external digital pulley to drive the push rod to cause the change of the internal solvent to absorb the corresponding dose of solution. Since the setting position of the digital pulley is usually located in the middle and upper part of the handle, and the size of the digital pulley is small, a larger force is required to adjust the dose. , when faced with a large-scale laboratory, repeated and frequent dose adjustments will inevitably cause hand fatigue, which is harmful to the health of operators who work for a long time

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