Rotary filtration apparatus

Abstract

The invention discloses a rotary filtration apparatus, which comprises a raw liquid box, a filtering box and a liquid production box, wherein the raw liquid box, the filtering box and the liquid production box are sequentially connected, a liquid inlet valve and a liquid inlet pump are sequentially arranged between the raw liquid box and the filtering box, a membrane assembly for filtering a raw liquid is arranged in the filtering box, a suction pump is arranged between the filtering box and the liquid production box, a liquid outlet valve is arranged between the suction pump and the liquid production box, the raw liquid filtered by the membrane assembly is sucked to the liquid production box through the suction pump, the membrane assembly is connected to the inlet of the suction pump, a drive motor for driving the membrane assembly to perform rotary filtration is arranged at the outlet of the membrane assembly, the drive motor and the suction pump are arranged at the same end of the membrane assembly, the membrane assembly comprises a plurality of hollow plate-and-frame structure filtration membrane elements and a hollow shaft arranged at the centers of the filtration membrane elements, the plurality of the filtration membrane elements are communicated to the hollow shaft, and a flat plate gas-permeation membrane is made of one or a variety of materials selected from PTFE, PVDF, PP and a metal. The rotary filtration apparatus of the present invention has advantages of stable and safe running, simpleness, durability, convenient use, convenient maintenance and good filteringeffect.

Description

technical field [0001] The invention relates to the technical field of membrane separation, in particular to a rotary filter device which is simple, durable, easy to operate and easy to maintain. Background technique [0002] As a high-tech separation technology, membrane separation has been widely used in the field of liquid treatment and industrial separation. In order to facilitate assembly and industrial operation, improve membrane efficiency, and achieve the largest membrane filling area per unit volume, the membrane is usually assembled in a basic unit in some form to form a membrane module. Separation of components. [0003] At present, the common assembly forms of membrane separation equipment at home and abroad are: plate and frame type, spiral wound type, round tube type, hollow fiber type and capillary type. In recent years, the Chinese patent No. ZL200910224681.9 discloses a rotary membrane separation device, which includes a rotary support, a hollow shaft, a d...

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Problems solved by technology

[0004] In practical application, the existing technology mainly has four deficiencies: one is that the motor and the suction pump are arranged at both ends of the rotating shaft of the equipment, so the pipelines and circuits are complicated; The entire hollow shaft needs to be disassembled when sealing leakage, which is more troublesome; the third is that the diaphragm is limited to organic membranes, and the membrane elements are welded, the strength cannot be fully guaranteed, and damage is inevitable; the fourth is that the shaft fastening and leakage of the sealing part cannot be detected in time

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