Filter press capable of feeding by air pressure and reversely blowing filter cake

Abstract

The invention discloses a filter press capable of feeding by air pressure and reversely blowing a filter cake. The filter press is a complete set of filtering device; the filter press comprises a feeding pump, a pneumatic feeding tank, an air compressor, feeding control valves (V01, V02 and V03), air inlet control valves (V04 and V05), a one-way valve, a safety valve, a pressure gauge, a liquid level meter, a pressure sensor and a slurry control valve; the pneumatic feeding tank is provided with a feeding port and a discharging port. A feeding pipeline is connected with the feeding port of thepneumatic feeding tank; a crossing pipeline is connected with the feeding pipeline, a discharge pipeline is connected with a filter chamber of the filter press; a pressure sensor is arranged on the discharge pipeline; The discharge pipe is connected with the filter chamber of the filter press, the pressure sensor is installed above the discharge pipe, and the air inlet pipe is connected with theair pressure feeding tank. The filtering system is completely and automatically controlled by a PLC, high-pressure feeding materials rapidly form a filter cake in the filter chamber, filtrate is rapidly discharged, the purity of the filter cake is improved, the filtering speed of air pressure feeding is improved by three times compared with the original circulation period, the production cost is reduced, and thus the economic benefit is improved.

Description

technical field [0001] The invention relates to the field of filter presses for filtration equipment in the solid-liquid separation industry, and relates to a filter press for air pressure feeding, and more particularly, to a filter press for air pressure feeding and backflushing of filter cakes. Background technique [0002] The filter press is the main filter equipment in the solid-liquid separation industry. The material enters the filter chamber through the pressure of the feed pump, and the particles in the material are retained by the filter cloth installed in the filter chamber to form a filter cake in the filter chamber, and the filtrate is discharged from the four corners of the filter plate. The hole is discharged, the filter plate is pulled apart to remove the filter cake, and one filtration cycle is completed to achieve the purpose of solid-liquid separation. [0003] Due to the development of the economy, the types of materials to be filtered are increasing. At ...

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Problems solved by technology

[0003] Due to the development of the economy, the types of materials to be filtered are increasing. At present, the traditional filter system used by the filter press can no longer meet the needs of the market. Some materials have the following defects when filtering. The cloth is damaged, the material filtration speed is slow, the separation effect is poor, the feeding time is long, and the production cost is high, which affects the economic benefits

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