Blowback buffer device and method for plate-and-frame filter press

By designing a backblowing buffer device, using multiple energy dissipation and solid-liquid temporary storage technology, the problem of sludge liquid splashing during the backblowing of the plate and frame filter press is solved, and a cleaner operating environment and highly adaptable device is achieved.

CN119707227APending Publication Date: 2025-03-28MAKING GREEN ENVIRONMENTAL TECH(SHANGHAI) CO LTD
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Patent Information

Application Number
CN202411901546.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-23
Publication Date
2025-03-28

AI Technical Summary

Technical Problem

During the backblowing process of the plate and frame filter press, due to the high pressure of compressed air and the large expansion coefficient, the residual sludge droplets splashed out everywhere, causing trouble to the operating environment.

Method used

A backblowing buffer device is designed, including a backblowing sludge return main pipe, exhaust branch pipe, energy dissipation device and porous water leakage gate trough. Through multiple energy dissipation and solid-liquid temporary storage, the flow rate of the pipeline medium is slowed down and the risk of splash is reduced.

Benefits of technology

It effectively reduces the splashing phenomenon of sludge liquid, improves the cleanliness of the operating environment, and the device specifications are adjustable, suitable for different sludge return flow and use requirements.

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Abstract

The invention relates to a back-flushing buffer device and method for a plate-and-frame filter press, the tail end of a back-flushing sludge return main pipe is connected with a three-way pipe, one end of the three-way pipe is connected with an exhaust branch pipe extending upwards, and the exhaust branch pipe is provided with an exhaust branch special valve for primary energy dissipation; and the other end of the three-way pipe is connected with a blowback sludge backflow secondary pipe which extends downwards. An energy dissipation device is arranged at the lower end of the back flushing sludge backflow secondary pipe and is used for secondary energy dissipation. A plurality of groove body fixing tie bars are evenly arranged on the circumference of the energy dissipation device and used for third-time energy dissipation, and a gap is reserved between every two adjacent groove body fixing tie bars and used for fourth-time energy dissipation. The energy dissipation devices are sequentially arranged on the exhaust branch pipes; a porous water leakage grid groove is formed vertically below the energy dissipation device and used for five-time energy dissipation. According to the invention, continuous five-time energy dissipation is realized, and back flushing sludge and sewage splashing is avoided.
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