Processing technology of winding type metal porous filter cartridge

Through the use of modified metal fiber felt and modified adhesive, the shortcomings of the winding metal porous filter cartridge in terms of filtration performance and mechanical strength are solved, and higher filtration accuracy, dust removal efficiency and wear resistance are achieved.

CN119633499AInactive Publication Date: 2025-03-18ANHUI LITONGDA FIBER NEW MATERIAL CO LTD
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Patent Information

Application Number
CN202411737667.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-11-29
Publication Date
2025-03-18
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

The existing winding metal porous filter cartridges have shortcomings in terms of filtering performance and mechanical strength, insufficient filtration accuracy, poor dust removal efficiency, and low wear resistance and durability.

Method used

By preparing the modified metal fiber felt, including the reaction of the oxidized metal fiber felt with Ni(NO3)2·9H2O and urea, a hydrotalcite film layer is generated and a thickened fiber layer is thickened; at the same time, a modified adhesive and a modified sealant are used to enhance the adhesive performance and sealing properties.

Benefits of technology

The filtering accuracy and dust removal efficiency of the winding metal porous filter cartridge are improved, the wear resistance and durability are enhanced, the bubble point pressure is reduced, and the breathability is improved.

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Abstract

The invention discloses a processing technology of a winding type metal porous filter cartridge, and belongs to the technical field of dedusting filter cartridge processing, and the processing technology comprises the following steps: placing an oxidized metal fiber felt in a reaction kettle at 80-100 DEG C, adding Ni (NO3) 2.9 H2O, urea and deionized water, generating a hydrotalcite film layer on the surface layer of the oxidized metal fiber felt by using an in-situ hydrothermal method, and drying the hydrotalcite film layer to obtain the winding type metal porous filter cartridge. The modified sealant with high elasticity, high water absorptivity and high durability is prepared by adding a modified adhesive into a silane-terminated polyether prepolymer, optimizing the filtering precision and the filtering efficiency, reacting the modified adhesive with a ferric chloride solution containing Fe < 3 + > to increase the bonding performance of the sealant, and performing enhanced modification on the silane-terminated polyether prepolymer through a filler, a catalyst and a plasticizer. And the problem that the coiled metal porous filter cartridge is easy to expand due to heating is avoided.
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