Pressure filtration technology and band type filter press for realizing said process

A belt-type filter press, filter press dehydration technology, applied in the direction of mobile filter element filter, filtration separation, separation method, etc., can solve the problems of complex structure, high cost, poor dehydration effect, etc., and achieve small size and low cost , the effect of uniform pressure

Inactive Publication Date: 2007-08-01
SHAANXI YANGGUANG ENVIRONMENTAL PROTECTION TECH
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Problems solved by technology

[0015] The purpose of the present invention is to provide a filter press dehydration process and a belt filter press for realizing the proc

Method used

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  • Pressure filtration technology and band type filter press for realizing said process

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Embodiment Construction

[0050] Referring to Fig. 1, the steps of the filter press dehydration process of the present invention are as follows:

[0051] 1) Spray slurry: spray the paste slurry onto the lower mesh belt 1 through the slurry release box.

[0052] 2) Gravity dehydration: During the power pulling operation, the lower mesh belt 1 is guided to the horizontal gravity dehydration roller 2, and when running through the gravity dehydration roller 2, free dehydration is carried out by gravity, and part of the water can be extracted. The gravity dewatering roller 2 is one, two or more rollers arranged horizontally.

[0053] 3) Forming the filter mesh belt 3: covering the slurry surface with the mesh belt 4, so that the slurry is clamped between the upper and lower mesh belts 1 to form the slurry filter mesh belt 3.

[0054] 4) Adsorption dehydration: make the filter belt 3 run through the vacuum box 5 for vacuum adsorption dehydration, and part of the water can be removed. Vacuum box 5 is advisa...

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Abstract

A filter-pressing dewatering process and the belt filter press, it sprays the slurry on the mesh belt, it dewaters by gravity and adsorption, then it twines the filter mesh belts on two filter-pressing dewatering rollers consecutively to make the filter mesh belts be wave, then it filter-pressing dewaters under the function of twist movement force. Power drives the active directing rollers; the completed slurry is delivered between the active and the driven directing rollers. The invention resolves the technical problems of complex equipment structure, high costs and poor dehydration results in background technology. The invention uses single row roller drive, energy consumption is low, dehydration is uniform, effect is good and quality slurry is high.

Description

technical field [0001] The invention relates to a pressure filtration process and equipment for solid-liquid separation of materials, in particular to a filter press dehydration process and a belt filter press for realizing the process. Background technique [0002] Filter presses are widely used in coal, chemical, metallurgy, building materials, food, paper, pharmaceutical, mining, textile, printing and dyeing, ceramics, petrochemical, and urban water supply and drainage industries. [0003] In the paper industry, the belt filter press is the main equipment in the high-concentration extraction of the cooking black liquor, the washing of the pulping section, the dehydration storage and transportation of the paper pulp, and is mainly composed of upper and lower rows of rollers with different diameters. The system is composed of an extruded mating surface formed between the upper and lower rows of rollers. The slurry is clamped between two layers of filter mesh belts 3, and t...

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Application Information

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IPC IPC(8): B01D33/052
Inventor 吴国正贾乃通石卫民
Owner SHAANXI YANGGUANG ENVIRONMENTAL PROTECTION TECH
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