Urban river and lake sludge filter-pressing dehydration device

By designing a linkage mechanism and screw drive in the filter press, the timing coupling of filter pressing and discharge actions is realized, solving the problem of automated filter cake discharge and improving the overall efficiency and dewatering effect of sludge treatment. In particular, for river and lake sludge with high viscosity and high water content, it achieves high efficiency in filter cake strength and dryness.

CN224394757UActive Publication Date: 2026-06-23浙江省环境科学学会
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Patent Information

Application Number
CN202521456945.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-07-12
Publication Date
2026-06-23
Estimated Expiration
2035-07-12

AI Technical Summary

Technical Problem

In existing filter press devices, it is difficult to automatically discharge the filter cake from the filter press chamber. External auxiliary equipment is required to complete the unloading operation, which leads to the interruption of the process continuity and significantly restricts the overall processing efficiency of sludge dewatering and filter press.

Method used

A dewatering device for urban river and lake silt was designed. The device uses the lifting and lowering action of the pressure plate to create a linkage mechanism, thereby achieving the time coupling of the filtration and discharge actions. The lifting seat and connecting rod are driven by a screw to perform silt filtration in the inner cavity of the filter box. At the same time, the baffle at the discharge port is adjusted to realize the opening and closing status of the discharge guide channel and the control of the discharge volume.

Benefits of technology

It eliminates discharge intervals, ensures process continuity, improves system processing efficiency, reduces equipment investment and maintenance costs, avoids time loss due to discharge interruptions, significantly increases sludge processing capacity per unit time, improves overall processing efficiency, and provides continuous and stable high pressure through threaded drive, achieving deep dewatering and high-strength filter cake forming.

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Abstract

An urban river and lake sludge filter-pressing dehydration device belongs to the technical field of filter-pressing devices and comprises a filter-pressing box and a pressing plate and further comprises a first groove body, a mounting plate, filter cloth, a discharge port, a discharge guide channel, a baffle, a table plate, an extension block, a driving rod, a trigger and a pushing assembly, and the first groove body is formed in the right side wall of the filter-pressing box; the number of the mounting plates is two, and the mounting plate on the right side is embedded into the first groove body in a sliding mode. Through time sequence coupling of filter pressing and discharging actions, the discharging interval is eliminated, the process continuity is guaranteed, additional auxiliary equipment is not needed, meanwhile, time loss caused by discharging interruption is avoided, the sludge treatment amount per unit time is increased, and the overall efficiency is improved; by means of the linkage design, discharging preparation is made in the lifting process after filter pressing is completed, the operation intelligence degree is increased, the response speed is increased, and seamless connection of filter pressing and discharging is achieved; a thread driving mode is adopted, continuous and stable high pressure can be provided, and deep dehydration is achieved for high-viscosity and high-water-content river and lake sludge.
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