Filter press and filter pressing method

A filter press and filter belt technology, applied in chemical instruments and methods, dewatering/drying/concentrated sludge treatment, water/sludge/sewage treatment, etc. degree, reduce the occupation, and solve the effect of oversized equipment

Pending Publication Date: 2019-10-25
CHINA TIESIJU CIVIL ENG GROUP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Aiming at the problems in the prior art that several pressure rollers of the filter press have the same structure, the functions of the filter press are repeated, and the overall effect of the filter press is poor, the present invention provides a filter press and a method for pressing the filter, using pressure rollers with gradually decreasing diameters The layout method forms a scientific and reasonable filter pressure gradient gradually increasing, improves the filter pressure effect of the post-processing process, and ensures the filter pressure efficiency of the overall equipment

Method used

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  • Filter press and filter pressing method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Such as Figure 1 to Figure 4 As shown, a filter press includes a structural frame 10 and a first filter press system installed in the structural frame 10, a second filter press system and a press roller 4, and the two ends of the roller shaft of the press roller 4 are supported by the structural frame 10 .

[0045] A first filter belt 1 is included in the first filter press system, a second filter belt 2 is included in the second filter press system, and a section of mutual attachment is arranged between the first filter belt 1 and the second filter belt 2. The overlapping portion 3 formed together, the overlapping portion 3 inside is clamped with the material to be pressed, and one side of the overlapping portion 3 is provided with a pressing roller 4, and the pressing roller 4 squeezes the overlapping portion 3, and will be located in the overlapping portion 3. The liquid to be filtered is squeezed out.

[0046] In order to facilitate the description of the overlap...

Embodiment 2

[0058] In the case that other basic technical solutions of Embodiment 1 remain unchanged, the difference of this embodiment is that there are two pressure rollers 4 located at the front filter press position, which together form a large pressure roller group 401; There are three pressure rollers 4 in the position, which jointly form a small pressure roller group 403, and three transitional pressure roller groups 402 are arranged between the large pressure roller group and the small pressure roller group. The large pressure roller group 401 performs combined preliminary pressure filtration on the material to be filtered in the overlapping part, which improves the defect that the single pressure roller pressure filter is prone to excessive extrusion resistance, realizes uniform extrusion on the overlapping part, and then passes through the transitional pressure The roller set 402 corrects and supplements the press filter, and finally uses the small press roll set 403 to carry out...

Embodiment 3

[0060] In the case that other basic technical solutions of Embodiment 2 remain unchanged, the third filter belt 16 of this embodiment is provided with a scraper 151 for scraping and dropping the material to be filtered onto the first filter belt 1 . The inclination angle of the third filter belt 16 relative to the horizontal plane is not less than 3°, so that the third filter belt 16 is in a climbing conveying state. Specifically, the feed port of the third filter belt 16 is located at the lower end, and a baffle plate is also provided at this end 9. Prevent the material to be filtered placed on the third filter belt 16 from slipping out of the third filter belt 16, correspondingly, the third filter belt 16 has a higher outlet. With the above-mentioned structural arrangement, more materials can be accumulated on the third filter belt 16, the time interval for cleaning can be extended, and the material to be filtered has more time to precipitate free water. The inclination angle...

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Abstract

The invention relates to a filter press and a filter pressing method, and belongs to the technical field of water removing equipment. The filter press comprises a first filter pressing system and a second filter pressing system, the first filter pressing system internally comprises a first filter belt, the second filter pressing system internally comprises a second filter belt, a section of an overlapping part formed by mutual attaching is arranged between the first filter belt and the second filter belt, pressing rollers are arranged on one side of the overlapping part, the pressing rollers extrude the overlapping part, thus objects to be subjected to filter pressing between the first filter belt and the second filter belt are extruded to filter liquid out; and the two or more pressing rollers are arranged, and the diameters of the pressing rollers located on the front filter pressing position are larger than the diameters of the pressing rollers located on the rear filter pressing position. The multiple pressing rollers with the diameters being decreased progressively are adopted to sequentially conduct pressure progressive increase type filter pressing on the overlapping part, the pressing rollers located on the front filter pressing position become the basis of further filter pressing of the pressing rollers located on the rear filter pressing position, high-efficiency filter pressing of overall filter pressing equipment is achieved, and the water outlet proportion of the objects, to be subjected to filter pressing, such as sludge and impurities is increased.

Description

technical field [0001] The invention relates to the technical field of water removal equipment, in particular to a filter press and a filter press method. Background technique [0002] Belt filter press is widely used in sludge dehydration treatment in industries such as urban domestic sewage, textile printing and dyeing, electroplating, papermaking, leather, brewing, food processing, coal washing, petrochemical, chemical, metallurgy, pharmaceutical, ceramics, etc. Solid separation or liquid leaching process in industrial production. The basic principle is that after the concentrated sludge is fully mixed with a certain concentration of flocculant in the static and dynamic mixer, the tiny solid particles in the sludge will coagulate into larger flocculent agglomerates, and free water will be separated at the same time. The flocculated sludge is conveyed to the filter belt of thickening gravity dehydration, and the free water is separated under the action of gravity to form ...

Claims

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Application Information

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IPC IPC(8): C02F11/123C02F11/14
CPCC02F11/123C02F11/14
Inventor 舒宝成刘道学于健赵静文许堃
Owner CHINA TIESIJU CIVIL ENG GROUP
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