A high-precision plunger type micro-sampling pump

A micro-injection pump, plunger technology, applied in the direction of pump, pump control, liquid variable volume machinery, etc., can solve the problems of sample injection, high price, poor accuracy, etc. Smooth, simple structure effect
CN104653426BInactive Publication Date: 2016-10-12河北雄安芯慧至上科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
河北雄安芯慧至上科技有限公司
Publication Date
2016-10-12
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a high-precision plunger type trace sampling pump. Guide rails are horizontally arranged and are connected with the bottom end of a sliding bracket, so that the sliding bracket moves left and right on the guide rails; a plunger pump is arranged at the top end of the sliding bracket; a liquid inlet one-way valve and a liquid outlet one-way valve are respectively arranged in a liquid inlet and a liquid outlet of the plunger pump; one end of a plunger of the plunger pump is embedded inside the plunger pump; a separation-reunion plate is arranged at the other end of the plunger; a spring coaxially sleeves the plunger; two ends of the spring are respectively in contact with the separation-reunion plate and the plunger pump; a motor is fixedly placed; a cam is fixed on a driving shaft of the motor. The high-precision plunger type trace sampling pump disclosed by the invention has the advantages of simple structure, high sampling precision, adjustable trace, stable operation and low cost; the high-precision plunger type trace sampling pump is suitable for accurate sampling of an analysis instrument system and high-precision agent mixing, in particular for sampling detection of microbial culture solution.
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Description

technical field

[0001] The invention belongs to the technical field of liquid sampling pumps, and relates to a high-precision plunger-type micro-sampling pump, which is suitable for accurate sampling and high-precision reagent mixing of analytical instrument systems, and is especially used for microbial sampling detection. Background technique

[0002] In chemical analysis, sampling precision and consistency determine the precision of measurement results. Similarly, high-precision sampling equipment is also required in the quantitative and qualitative analysis of microorganisms in liquids, and it is required that microorganisms must not be crushed during the sampling process. At present, there are mainly three methods of manual sampling, peristaltic pump sampling and syringe pump sampling in chemical analysis. Manual sampling has disadvantages such as low efficiency and poor precision; peristaltic sampling is easy to cause sample movement, which is not suitable for micro-ac...

Claims

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