Magnetic sieve plate and preparation method and use method thereof

Abstract

The invention discloses a magnetic sieve plate and a preparation method and a use method thereof. The magnetic sieve plate is made of various materials, wherein at least one material is a non-permanent magnetic material, and at least one material is a high polymer material. The magnetic sieve plate is non-magnetic in a non-magnetic field environment and is not different from a common sieve plate,and meets all filtering functions of the common sieve plate; and in an external magnetic field, the magnetic sieve plate generates magnetism, can be controlled by the magnetic force, can move in a housing, realizes a filtering function at different positions in the space of the housing, or realizes directional movement of intercepted large particles, or realizes regulation and control of the sizeof a filtrate bearing space; and the magnetic sieve plate has important significance for the fluid control and automatic detection process.

Description

technical field [0001] The invention relates to the technical field of biochemical detection, in particular to a magnetic sieve plate, a preparation method and a use method thereof. Background technique [0002] In the prior art, sieve plates are usually used in purification and filtration equipment to intercept large particles and purify products. CN205773875U discloses a sand-water separation device for water treatment, comprising a separation device body and a settling barrel; a metal collecting bucket is provided between the lower end of the separating device body and the upper end of the settling bucket; From top to bottom, a first magnetic sieve plate, a second magnetic sieve plate and a stirring device are arranged in sequence, the first magnetic sieve plate and the second magnetic sieve plate are arranged at intervals, and the second magnetic sieve plate and the stirring device Connection; simple structure and low operating cost. During the sand-water separation pro...

AI Technical Summary

Problems solved by technology

[0003] The above separation devices all use magnetic sieve plates, but in the process of implementing the embodiments of the present application, the inventors of the present application found that the above-mentioned technologies have at least the following technical problems: (1) The existing magnetic sieve plates are usually fixed in the shell, It cannot be moved and taken out during use, and generally has a one-piece structure, which cannot be disassembled and is not easy to clean; (2) The existing magnetic sieve plate generates a continuous magnetic field by itself even without applying any external magnetic field, and is usually used for Adsorb waste metal blocks, metal particles and metal powder in the sample; (3) The preparation of the existing magnetic sieve plate usually adopts two methods: the first method is to use natural magnetite and other magnetic materials to process directly, this method The pore diameter of the obtained magnetic sieve plate is relatively large; the second method is to set a cylindrical permanent magnet in the center of the sieve plate, and the magnetic distribution of the magnetic sieve plate obtained by this method is uneven

(4) The existing magnetic sieve plate does not modify the surface of the sieve plate material, and cannot achieve selective adsorption of small molecular compounds or biological macromolecules at the molecular level