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Centrifugal separator, mouth member for circular hollow cylindrical basket, and centrifugal separation method

A centrifugal separator and centrifugal separation technology, applied to centrifuges with rotating drums, centrifuges, etc., can solve the problems of increased moisture content of filter residues, decreased moisture content of filter residues, and increased filtration time, etc.

Active Publication Date: 2009-04-29
TSUKISHIMA KIKAI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, from the nature of the so-called "filtration by centrifugation", when the input amount of the treated material is increased, the moisture content of the obtained filter residue will also increase.
Therefore, it is difficult to improve the treatment efficiency when the water content of the obtained filter residue must be lower than a predetermined value.
Of course, if the filtration time is prolonged, the moisture content of the obtained filter residue itself will also decrease, but a large-scale device is required

Method used

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  • Centrifugal separator, mouth member for circular hollow cylindrical basket, and centrifugal separation method
  • Centrifugal separator, mouth member for circular hollow cylindrical basket, and centrifugal separation method
  • Centrifugal separator, mouth member for circular hollow cylindrical basket, and centrifugal separation method

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Embodiment 1

[0054] Next, examples will be described.

[0055] In the case of using the end ring 21 (inclination angle θ=30°) as shown in FIG. 3(2) (inclination type), and using the end ring 121 (inclination angle θ= In the case of 0°) (horizontal type), the filtration performance was tested for comparison. The test was carried out by changing the centrifugal effect to 700G or 1000G and also changing the slurry supply flow rate. The results are shown in Fig. 5.

[0056] First, according to FIG. 5, it can be understood that as the slurry supply flow rate increases, the water content of the filter residue (wt% WB) also increases.

[0057] However, it can be seen that when the inclined end ring 21 is used, the moisture content of the filter residue discharged under the same conditions is reduced by 1 to 1.5% by weight, that is, the filtration performance is improved. In particular, according to Fig. 5, it can be known that when a predetermined moisture content is desired, for example, when a cent...

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Abstract

The invention provides a centrifugal separator having excellent filtration performance. The centrifugal separator has a circular hollow cylindrical basket (11) that rotates, a circular hollow cylindrical screen (11A) fixed to the inner surface of the basket (11), an extrusion mechanism (31) for cake formed on the inner surface of the screen (11A), and a discharge opening (16B) for the cake extruded by the extrusion mechanism (31).A small diameter section (21) having an inner diameter smaller than the inner diameter of the screen (11A) is provided at the end, on the extrusion side, of the basket (11).

Description

Technical field [0001] The present invention relates to a pusher type centrifugal separator that pushes out and discharges filter residue, a mouth member of a cylindrical drum used in the centrifugal separator, and a centrifugal separation method using these. Background technique [0002] In the past, centrifugal separators have various forms such as disc type and pusher type. In addition, the push-type centrifugal separator has, for example, a rotating cylindrical drum; a cylindrical screen fixed on the inner surface of the cylindrical drum; and an ejection mechanism that will be formed on the cylindrical screen The filter residue on the inner surface of the net is pushed out; and the outlet of the filter residue pushed out by the pushing mechanism (for example, refer to Patent Document 1). [0003] In this pusher type centrifugal separator, the slurry to be processed is put into the cylindrical drum, the cylindrical drum is rotated, the filtrate is discharged to the outside thr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B04B3/02
CPCB04B7/18B04B3/02B04B7/04
Inventor 栗田新平中根孝典
Owner TSUKISHIMA KIKAI CO LTD