Unlock instant, AI-driven research and patent intelligence for your innovation.

A screen bowl decanter centrifuge

A centrifuge, angled technology, used in centrifuges, centrifuges with rotating drums, etc.

Pending Publication Date: 2021-01-08
THOMAS BROADBENT & SONS
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, an important aspect in evaluating the performance of a decanter is its power consumption

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A screen bowl decanter centrifuge
  • A screen bowl decanter centrifuge

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] The centrifuge shown in the figures comprises a drum 10 supported in bearings 12, 14 for rotation about a horizontal axis A-A. Drum 10 includes a relatively large diameter imperforated first cylindrical portion 16 , an imperforated frustoconical portion 18 and a screen portion 20 . The screen section 20 comprises: a first cylindrical screen section 22 having an inner diameter equal to the smallest diameter of the frusto-conical drum section 18; and a diverging frusto-conical screen Portion 24 , the frusto-conical screen portion adjoining cylindrical screen portion 22 . The left-hand end of the cylindrical wall portion 16 (as seen in the figures) is closed by a radial wall 26 . The radial wall 26 is secured to the outer end of the cylindrical portion 16 by bolts (not shown) passing through aligned holes in the cylindrical portion 16 and mating lugs 27a, 27b on the wall 26 . Wall 26 contains one or more holes 28 for defining an overflow weir for determining the depth of...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A screen bowl decanter centrifuge comprises a horizontally rotatable bowl (10) within which a scroll conveyor (46, 60) is coaxially mounted for rotation at a slightly different speed for conveying solids, deposited by centrifugal action on the internal surface of the bowl, towards a solids discharge end of the bowl, the other end of the bowl having a liquids outlet (28). The bowl (10) has an imperforate frustoconical portion (18), which converges towards the solids discharge end and provides a sloping ramp up which solids are drawn by the conveyor out of the liquid pool contained in the bowl,and a perforate screen portion (20) downstream of the imperforate frustoconical portion (18) in the direction of solids discharge for assisting dewatering of the solids. The perforate screen portion (20) comprises a first portion (22) downstream of the imperforate frustoconical portion (18), inclined at a first angle with respect to the rotational axis (A-A) of the bowl, and a second, divergent portion (24), considered in the direction of solids discharge, downstream of the first portion (22) and inclined at a second angle with respect to the rotational axis of the bowl. The scroll conveyor (46, 60) is located adjacent to both the imperforate portion (18) and the perforate screen portion (20) of the bowl.

Description

technical field [0001] The present invention relates to a screen bowl decanter centrifuge. Background technique [0002] A known settling filter decanter centrifuge consists of a horizontally rotatable bowl within which are coaxially mounted screw conveyors for rotating at slightly different speeds to remove the sediment deposited by centrifugation. Solids on the inner surface of the drum are conveyed to the solids discharge end of the drum. The other end of the drum has a liquid outlet. The drum is generally cylindrical for the most part, but has a frustoconical section at the solids discharge end. The frustoconical portion converges towards the discharge end and provides an inclined ramp. Solids are drawn by conveyors along this ramp from a pool of liquid contained in a drum. Thus, the ramp provides a dry area for such solids to be transported out of the liquid pool. In known settling filter centrifuges, the frustoconical ramp section is supplemented by a coaxially ar...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B04B3/04
CPCB04B3/04B04B1/08B04B1/20
Inventor 安德鲁·约翰·塞尔韦尼古拉斯·罗伯特·小弗罗利希奈杰尔·帕特森·黑格
Owner THOMAS BROADBENT & SONS