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Sieving device for sieving granular material

一种筛分装置、颗粒物料的技术，应用在旋流装置、用气流将固体从固体中分离出来、固体分离等方向，能够解决压力损失等问题，达到消除加速的损失、消除流动阻力和/或压力损失、单位能量要求减少的效果

Inactive Publication Date: 2008-10-22
KHD HUMBOLDT WEDAG GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the connecting pipe between the rod basket screen and the downstream fines separator causes a considerable pressure loss

Method used

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  • Sieving device for sieving granular material

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Experimental program
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Effect test

Embodiment Construction

[0013] In the screening machine housing 10, at least one rod-shaped basket 11 is mounted rotatably and cantilevered on an approximately horizontal shaft 13, said rod-shaped basket 11 having eddy current elements 12 distributed over the circumference of the rotor, said shaft Driven by motor 14. The rod basket 11 with its swirl elements 12 can be designed conically or frustoconically instead of cylindrically. A frusto-conical extrusion body 15 can be arranged inside the rod-shaped basket 11 . The granular material to be sieved, for example from a jet mill, is introduced into the sifter housing 10 , suspended in the sifting air flow 16 , where it is accelerated to the peripheral speed of the rotating rod basket 11 . The fine-grained material contained in the input material is conveyed inwards by the air flow against the centrifugal force between the rods 12 of the rod basket 11 and leaves the rod basket centrally together with the sieving air flow, in the case of the shown embod...

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Abstract

In order to improve the design of a sieve device for sieving granular material with at least one rotational cage-rotor classifier and with a fines separator connected downstream therefrom, whereby saving space and specific energy demand for operating the entire device. To this end, the invention provides that a cyclone-like cyclone separator (21) is to be directly mounted with the smaller diameter of its housing cone (22) on the sieve housing opening (19) for drawing the flow of sieving gas (20), which flows out with angular momentum energy and which is loaded with the fines, whereby the cage-rotor classifier (10, 11) and the separator (21) form a compact modular unit, and an immersion tube (23) for drawing the flow of sieving gas (24), which is rid of the fines, is to be placed in the center of the cyclone separator (21), and at least one opening (25) for discharging the fines (26); is to be placed on the periphery of the cyclone separator housing (21).

Description

technical field [0001] The invention relates to a screening device for screening granular materials, which has at least one rod-shaped basket (Stabkorb) which is rotatably arranged in the housing of the screening machine and which is used for screening gases, to be screened Inlet and outlet for granular material, coarse granular material and fine granular material, the rod-shaped basket above has eddy current elements distributed along the circumference of the rotor, wherein the outlet holes for extracting the sieving air flow containing fine granular material are arranged in the sieving machine housing at a On at least one of the end sides of the rotating rod basket. Background technique [0002] Such dynamic screening devices, also commonly referred to as rod basket screens, are known, in which the granular material to be screened in the screening zone is accelerated to the peripheral speed of the rod basket by means of a rotating rod basket, and due to the action on the m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B07B7/083B07B9/02
CPCB07B7/083B04C2009/007B07B9/02
Inventor S·施特拉塞尔A·聚贝格尔
Owner KHD HUMBOLDT WEDAG GMBH
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