Solid-liquid mixture filter device

Abstract

The invention discloses a solid-liquid mixture filter device. The solid-liquid mixture filter device comprises a tank, a cylinder jacket, a piston, a filter medium and a solid discharging device, wherein the bottom of the tank is communicated with the solid discharging device; the filter medium is arranged in the tank; the space in the tank is partitioned into two parts of a filter cavity and a liquid purification cavity; the filter cavity is communicated with the liquid purification cavity through filter holes in the filter medium; a liquid inlet pipe provided with a liquid inlet one-way valve is communicated with the filter cavity; a liquid outlet pipe provided with a liquid outlet one-way valve is arranged on the outer wall of the tank and is communicated with the filter purification cavity; the cylinder jacket is communicated with the filter cavity; the piston is inserted into the cylinder jacket. The solid-liquid mixture filter device is reasonable in structure, convenient to operate, high in filter precision, high in efficiency, low in energy consumption, free from pollution, and low in using cost and maintenance cost, and is applicable to water filter, oil filter and mineral purification and filter, and can be widely applied to filtering of solid-liquid mixtures in water treatment industry, food chemical industry, industrial mining industry, machining industry and the like.

Description

technical field [0001] The invention relates to a solid-liquid mixture filtering device, which belongs to the technical field of solid-liquid separation. Background technique [0002] The current solid-liquid mixture filtration methods are mainly: gravity filtration and negative pressure filtration. [0003] 1. Gravity filtration [0004] The gravity of the liquid is used to push the liquid through the filter medium and enter the clean liquid tank under the filter medium. The typical product of this filtering method is: gravity paper belt filter, which generally adopts a conveyor belt or a mesh belt to support the filter medium at the bottom of the filter chamber, and a net liquid pool is set under the filter medium, and the solid-liquid mixture is pumped. Into the filter cavity, the liquid flows into the net liquid pool through the filter medium under the action of its own gravity, and the solid stays on the filter medium. As the solid accumulates on the filter medium, th...

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Problems solved by technology

[0013] 2. It is necessary to rely on the pump to pump the liquid into the filter device for filtration. Since the liquid before filtration is a solid-liquid mixture, it is easy to cause blockage of the pump and wear of the internal parts of the pump.

[0014] 3. The utilization rate of the filter medium is not high, and the filtration efficiency is low

[0015] 4. The filtration precision is low, the highest precision of gravity filtration can only reach 0.06mm, and the highest precision of negative pressure filtration can only reach 0.01mm.

[0016] 5. It is greatly affected by the viscosity of the filtered object, and it cannot filter liquids with high viscosity

[0017] 6. There are many auxiliary equipment, high energy consumption and high maintenance cost

[0018] 7. Disposable filter media pollutes the environment

[0019] 8. Large footprint

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