A laminated paperboard filter

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By introducing positioning grooves and positioning elements into the laminated cardboard filter, combined with improvements to the fixing components, the leakage problem caused by filter component misalignment was solved, achieving stable sealing and uniform material flow, thus improving the reliability and service life of the filter.

CN224524119UActive Publication Date: 2026-07-21HANGZHOU ZHAOBO FILTRATION TECH CO LTD

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Patent Information

Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner: HANGZHOU ZHAOBO FILTRATION TECH CO LTD
Filing Date: 2025-08-19
Publication Date: 2026-07-21

AI Technical Summary

Technical Problem

Stacked cardboard filters are prone to misalignment during installation or use, leading to uneven sealing, which may cause leakage and filtration failure.

Method used

By setting positioning grooves and positioning elements on the base and center rod, combined with the design of the fixing components, the accurate positioning and sealing of the stacked cardboard filter assembly are ensured. This includes the center positioning fit between the positioning part and the positioning groove, and the circumferential positioning between the center tube and the positioning component, to prevent shaking and displacement.

Benefits of technology

It effectively prevents the stacked cardboard filter assembly from shaking and shifting, reduces the risk of leakage, ensures the reliability of the seal and the filtration effect, and improves the service life of the filter unit and the uniformity of material distribution.

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Abstract

A kind of laminated paperboard filter, it includes base, at least one center rod, at least one set of laminated paperboard filter assembly, installation boss is provided on the base, positioning groove is formed on the installation boss, the lower end cover of laminated paperboard filter assembly at least includes with the positioning groove of adaptation positioning part, and the lower end cover of bottom laminated paperboard filter assembly is inserted into positioning groove and keeps center positioning and sealing by positioning part.It is advantageous in that: by the center positioning cooperation between positioning part and positioning groove, it can guarantee that laminated paperboard filter assembly installation position is accurate, effectively prevent from shaking deviation, reduce the risk of leakage.

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