Multistage filter for rosin processing

By using a multi-stage filter design and a nested combination of stainless steel woven mesh, sintered metal felt, and ceramic filter elements, the problem of small filtration area and inconvenient maintenance in existing rosin processing filtration devices is solved, achieving high-efficiency filtration and low-cost maintenance.

CN224462375UActive Publication Date: 2026-07-07KAIHUA CHENGXIN RESIN CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
KAIHUA CHENGXIN RESIN CO LTD
Filing Date
2025-08-11
Publication Date
2026-07-07

AI Technical Summary

Technical Problem

Existing filtration devices for rosin processing have small filtration areas, low filtration capacity per unit time, and require complete replacement when the filter is damaged, resulting in high maintenance costs.

Method used

It adopts a multi-stage filter design, including a nested filter assembly consisting of stainless steel woven mesh, metal sintered felt and ceramic filter element. Impurities are removed step by step through multi-stage filtration, and each component can be replaced individually, which improves filtration efficiency and ease of maintenance.

Benefits of technology

It achieves efficient multi-stage filtration, effectively removing large particles, fine fibers, and micron-sized impurities from rosin solutions, improving filtration efficiency and reducing maintenance costs.

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Abstract

This utility model discloses a multi-stage filter for rosin processing, relating to the field of rosin processing. It includes a filter housing with a cover at the top, an inlet pipe on one side, and an outlet pipe at the bottom. A first mounting plate is fixedly installed inside the filter housing, and a second mounting plate is fixedly installed above the first mounting plate. Several sets of filter components are arranged between the first and second mounting plates. By setting up these filter components, the solution undergoes multi-stage filtration under pressure, passing sequentially through each set of filter components. The rosin solution first passes through the outermost stainless steel woven mesh, effectively intercepting large particles of impurities. The solution then continues to permeate inwards, undergoing medium-efficiency filtration through the middle layer of sintered metal felt, removing fine fibers and carbonized particles. Finally, the solution reaches the innermost ceramic filter element, which thoroughly filters out micron-sized resin oxidation products and other fine impurities.
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