Layer-stepping type multi-filter disc filter machine

Abstract

The invention relates to a layer-stepping type multi-filter disc filter machine which comprises a cylindrical pressure container, wherein the container is provided with a feeding pipe, a rotating main shaft is arranged at the central axis of the container, and the rotating main shaft passes through the top of the container to be mutually connected with the output shaft of a gear motor; the top of the container is further fixedly provided with a displacement mechanism, and the displacement mechanism drives the rotating main shaft to move up and down in the container; at least two groups of filter devices are uniformly arranged along the vertical direction between the inner wall of the container and the rotating main shaft, any group of filter device comprises a filter disc and a scraper which are horizontally arranged, and the scraper of any group of filter device is arranged above the corresponding filter disc; a liquid discharge passage and a discharge passage which are used for communication and are communicated with the filter device are arranged in the container. The layer-stepping type multi-filter disc filter machine provided by the invention is compact in structure, the operation is reliable and stable, the filter effect is greatly improved, and the filtering effect is good.

Description

technical field [0001] The invention belongs to the technical field of airtight pressure filters, and in particular relates to a layered multi-disc filter. Background technique [0002] In the industrial production of pharmaceuticals, pesticides, food, chemicals, dyes, etc., many inflammable, explosive, toxic, volatile, easily polluting materials and difficult-to-filter slurries require ideal solid-liquid separation equipment to deal with. At present, flat plate filter disc filters with filter discs perpendicular to the axis of the container are mostly used to process them. Flat plate filter disc filters have the ability to trap solid filter cakes on the filter discs under pressure, and the thickness of the filter cakes is relatively uniform. Good filtration performance; however, the biggest problem of the flat plate filter disc filter is the limited filtration area, which is restricted by factors such as materials, processing and manufacturing. The maximum diameter of the f...

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Problems solved by technology

However, its structure is relatively complicated, and the unloading process cannot be synchronized with the feeding process, and the operation process is discontinuous. When the material reaches a predetermined dryness, the filter plates are loosened one by one, and the control system controls the intake valve to release the filter plate to the loosened filter plate. If high-pressure gas is introduced into the gas channel or liquid channel, the filter cloth will be swelled by the high-pressure gas, and the material sticking to the filter cloth will be washed away. Although the purpose of filtration and separation is achieved, the filtration efficiency is reduced.

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