A dip-coating apparatus for preparing a permeation membrane

CN224423320UActive Publication Date: 2026-06-30SUNOTE (SUZHOU) MATERIAL TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SUNOTE (SUZHOU) MATERIAL TECH CO LTD
Filing Date
2025-07-25
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

In existing permeate membrane preparation devices, uneven coating of the coating solution during the dip-coating process leads to uneven thickness at the membrane edges, affecting the coating quality.

Method used

The structure employs a limiting channel, bracket, bearing, adjusting screw, solenoid, limiting protrusion, upper and lower extrusion rollers, etc. It achieves uniform coating through the rolling contact between the forward osmosis membrane and the upper and lower extrusion rollers, and provides power through the upper and lower limiting rollers driven by hydraulic cylinders to ensure uniform contact between the membrane and the coating solution.

Benefits of technology

It achieves uniform contact between the permeation membrane and the dipping solution, prevents excessive liquid from affecting the coating quality, and improves coating efficiency and stability, adapting to the needs of different membrane thicknesses.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model discloses an dip-coating apparatus for preparing permeation membranes, including a dip-coating tank and a winding device. A surplus material box is connected to the side of the dip-coating tank at the bottom of the winding device. A mounting frame is connected to the dip-coating tank, and a telescopic sleeve is connected to the lower surface of the mounting frame. The mounting frame includes a limiting groove, and a bracket is connected to the upper surface of the mounting frame. A bearing is mounted on the bracket, and an adjusting screw is movably mounted within the bearing on the bracket. A spiral tube is movably inserted into the adjusting screw. Through the rolling contact between the forward osmosis membrane and the upper and lower extrusion rollers, excess liquid can be rolled off after the forward osmosis membrane has made uniform contact with the coating solution, preventing excessive liquid on the forward osmosis membrane from affecting the coating quality. Simultaneously, the distance between the upper and lower extrusion rollers is adjustable to accommodate different forward osmosis membrane thicknesses, improving practicality. This device solves the current problem of not being able to ensure uniform dip-coating.
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