Material scraping device of crystallizing tank

The electromagnetically driven scraper device enables dynamic adjustment of the distance between the scraper and the tank wall, solving the problem that traditional scrapers cannot adapt to changes in the thickness of the crystallized layer. This improves the operating efficiency and stability of MVR evaporation crystallization, reduces energy consumption, and minimizes scraper wear.

CN224024304UActive Publication Date: 2026-03-24YANGZHOU YONGFENG INDAL EQUIP INSTALLATION
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Patent Information

Application Number
CN202520758881.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-04-21
Publication Date
2026-03-24
Estimated Expiration
2035-04-21

AI Technical Summary

Technical Problem

Traditional rigid fixed scrapers cannot adapt to changes in crystal layer thickness, resulting in high energy consumption in thin-layer conditions and overload wear of the scraper in thick-layer conditions, affecting the operating efficiency and stability of MVR evaporation crystallization.

Method used

The scraper device, driven by an electromagnet, dynamically adjusts the distance between the scraper and the tank wall via a magnetic adjustment rod. Combined with a limit spring and a distance sensor, it forms a closed-loop adjustment system to control the radial displacement and pressure of the scraper. A buffer layer is also provided to reduce wear.

Benefits of technology

It improves the operating efficiency and stability of MVR evaporation crystallization, reduces energy consumption, minimizes damage to the inner wall of the crystallizer by the scraper, and enhances the adaptability and reliability of the system.

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Abstract

The utility model relates to the technical field of MVR (mechanical vapor recompression) evaporative crystallization, and particularly provides a crystallizing tank scraping device which comprises a crystallizing tank, a stirring motor and a fixed stirring scraper, the fixed stirring scraper is rotatably arranged in the crystallizing tank, and the stirring motor drives the fixed stirring scraper to rotate through a rotating shaft. The device further comprises a first lever, a first adjusting cutter, an adjusting rod, a ferromagnetic block and an electromagnet, the first adjusting cutter and the adjusting rod are arranged on the two opposite sides of the vertical cutter in parallel respectively, the first adjusting cutter is close to the inner wall of the crystallizing tank, the two ends of the first lever are hinged to the first adjusting cutter and the adjusting rod respectively, and the middle of the first lever is hinged to the vertical cutter. And the multiple first levers on the same vertical cutter are arranged in parallel, a ferromagnetic block is fixedly arranged at the top of the adjusting rod, electromagnets are arranged above the ferromagnetic block at intervals, and the electromagnets are fixed in the crystallizing tank. Dynamic adjustment is considered, the structure is simple, the magnetically-driven scraper can achieve elastic displacement to a certain degree, and damage to the inner wall of the crystallizing tank is avoided.
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