Quantitative pump special for in-situ filtration of deep sea microorganisms

Abstract

The invention relates to a pump, in particular to a quantitative pump special for in-situ filtration of deep sea microorganisms. The quantitative pump comprises a pump body and a base, wherein a frontretainer and a rear retainer are oppositely arranged on the end surface of the base, and the top and bottom ends of the front retainer and the top and bottom ends of the rear retainer are connected with reciprocating lead screws through linear guide rods which are parallel to each other; guide rod sliding blocks are installed on the linear guide rods, lead screw sliding blocks are installed on the reciprocating lead screws, and the guide rod sliding blocks and the lead screw sliding blocks are connected into a whole through a sliding block fixing frame; the rear side of the pump body is fixedon the front retainer through a pump body fastening block; a piston is arranged in the pump body, wherein a blind hole is formed in the rear end of the piston and connected with one end of a connecting rod; and the other end of the connecting rod is connected with the sliding block fixing frame. According to the quantitative pump special for in-situ filtration of the deep sea microorganisms, long-time work at low flow can be realized; in addition, compared with an impeller mechanism of a traditional centrifugal pump, the requirement for rotating speed of an output shaft of an motor is lower;and finally, compared with a cam mechanism of a traditional plunger pump, the quantitative pump is stabler and more reliable.

Description

technical field [0001] The invention relates to a pump, in particular to a quantitative pump specially used for in-situ filtration of deep-sea microorganisms. Background technique [0002] The ocean, especially the deep sea area, will be a key research and development area for human beings in the next few decades. The deep-sea environment is characterized by low temperature, high pressure, and high salinity, and organisms living in the deep-sea environment often have many unique traits. Among them, the collection and research of deep-sea microorganisms not only help humans understand the origin process of marine life, but also have important significance for the development of biological enzymology and biopharmaceutical industries. The microbial content in in-situ seawater is less, and the efficiency of extracting microorganisms by directly collecting in-situ seawater samples is low. Most of the existing sampling devices use microporous membranes to enrich microorganisms i...

AI Technical Summary

Problems solved by technology

The working depth of existing submersible pumps in China is very limited, which cannot meet the needs of deep sea microbial filtration.

Common centrifugal pumps and axial flow pumps are difficult to achieve low flow and high pressure differential conditions due to the limitation of the vane structure, and the high-speed rotating vane shaft will bear a large load in the deep sea environment, greatly shortening the working life

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