Syringe filter

Abstract

The invention discloses a syringe filter which comprises an upper cover, a lower cover, a filtering membrane and coating rings, wherein the upper cover comprises an upper cover plate body and an input tube part; the lower cover comprises a lower cover plate body and an output tube part; the upper cover plate body is connected and matched up and down with the lower cover plate body; the edges of the filtering membrane are clamped and fixed through the upper cover plate body and the lower cover plate body, so that a cavity is divided into an upper part and a lower part; peripheries of the upper cover plate body and the lower cover plate body are coated with the coating rings; a plurality of supporting rods A are arranged at the communication part of the tube hole of the input tube part and the cavity; the upper cover plate body is provided with a plurality of arc-shaped bulges A, circular arc-shaped grooves A and radial grooves A, which are formed in the inner wall of the cavity; a plurality of supporting rods B are arranged at the communication part of the tube hole of the output tube part and the cavity; 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 of the cavity; a plurality of reinforcing ribs are arranged at the bottom of the lower cover plate body. By adopting technical scheme of the invention, the filtering membrane is less susceptible to damage, 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. Background technique [0002] Membrane separation technology is known as "one of the most promising high-tech in the middle of the 21st century", among which the application of microporous membrane separation in the fields of biology, chemical analysis and pharmaceuticals is the most eye-catching, without the need to change membranes and clean filters , which saves complex and time-consuming preparations and is widely used in laboratories. Syringe filter has simple and reasonable structure, low cost, good filtering effect and strong universal applicability. It can be used as a fast, convenient and reliable filter treatment device for small-volume samples for routine use in laboratories, and is widely used for pre-filtration of samples. And in the sterilization and filtration operation of laboratory biological fluids, culture media and media additives. For example, the patent document whose publication number...

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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