Syringe filter and lower cover thereof

Abstract

The invention discloses a syringe filter and a lower cover thereof. The lower cover comprises a lower cover plate body and an output tube part arranged in the center of the lower cover plate body, wherein a plurality of supporting rods B are arranged at the connection part of the output tube part and the lower cover plate body; the supporting rods extend along the tube hole of the output tube part in the radial direction and are gathered and connected to the center of the tube hole; the lower cover plate body is provided with a plurality of arc-shaped bulges B, circular arc-shaped grooves B and radial grooves B, which are formed in the inner wall; the arc-shaped bulges B are concentrically distributed by taking the tube hole of the output tube part as a center; the circular arc-shaped grooves B are formed between every two adjacent inside and outside arc-shaped bulges B; the circular arc-shaped grooves B are communicated with one another through the radial grooves B; the radial grooves B are communicated to the tube hole of the output tube part and distributed in a radial manner; a plurality of reinforcing ribs are arranged at the bottom of the lower cover plate body. By adopting the technical scheme of the invention, the filtering membrane is less susceptible to damage, the intensity of the lower cover is high, the filter is less susceptible to blockage, and the filtering speed is stable and high.

Description

Technical field [0001] The invention relates to a syringe filter, in particular to the lower cover of the syringe filter. Background technique [0002] Membrane separation technology is known as "one of the most promising high-tech developments in the middle of the 21st century". Among them, microporous membrane separation is the most eye-catching application in the fields of biology, chemical analysis and pharmaceuticals, without the need for membrane replacement and filter cleaning. It saves complicated and time-consuming preparation work and is widely used in laboratories. The syringe filter has a simple and reasonable structure, low cost, good filtering effect, and strong universal applicability. It can be used as a fast, convenient and reliable small-volume sample filtration device for routine use in laboratories, and is widely used for sample pre-filtration And in the sterilization and filtration operation of laboratory biological fluids, culture media and media additives....

AI Technical Summary

Problems solved by technology

[0003] However, the existing syringe filter structure has problems such as easy damage to the filter membrane, easy local accumulation of filtered impurities, and insufficient strength of the lower cover.

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