GB669215A - Means for separating extraneous substances from, or for grading or sorting, granular, powdered or like materials - Google Patents

Means for separating extraneous substances from, or for grading or sorting, granular, powdered or like materials

Info

Publication number
GB669215A
GB669215A GB3041149A GB3041149A GB669215A GB 669215 A GB669215 A GB 669215A GB 3041149 A GB3041149 A GB 3041149A GB 3041149 A GB3041149 A GB 3041149A GB 669215 A GB669215 A GB 669215A
Authority
GB
United Kingdom
Prior art keywords
screen
baffle
duct
perforated
adjustable
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB3041149A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to GB3041149A priority Critical patent/GB669215A/en
Publication of GB669215A publication Critical patent/GB669215A/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07BSEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B9/00Combinations of apparatus for screening or sifting or for separating solids from solids using gas currents; General arrangement of plant, e.g. flow sheets

Landscapes

  • Combined Means For Separation Of Solids (AREA)

Abstract

669,215. Pneumatic separating. VAHEY, L., HENRY, C., and PHILLIPS, J. V. Nov. 3, 1950 [Nov. 28, 1949 ; May 26, 1950], Nos. 30411/49 and 13275/50. Class 117 In a pneumatic separator, granular or powdered material is fed into a vertical duct a on to a perforated screen extending partly across the duct from one side wall thereof below an outlet w which leads to a settling chamber y and from which an inclined baffle p extends to a short distance from the screen, and air is caused to flow through the material as it is fed on to the screen j to divert the lighter particles into the settling chamber y or on to the baffle, p; and to flow through the screen j and between the screen j and the baffle p to divert any remaining light material into the chamber y, means k being provided to deliver from the screen any material remaining thereon. As shown in Fig. 1, the material is fed via a rotary valve c and deflectors d, e, on to a pivoted inclined deflecting plate f which feeds the material in a curtain on to a downwardly inclined, slidably adjustable perforated feed screen i which extends from the duct side wall opposite the outlet w and overlies the free end of screen j to provide an air gap 20 therebetween, the screen j being inclined upwardly from its adjacent duct wall. The lower portion of screen j underlies a pivoted perforated baffle p and is of upright or inverted V form, or laterally inclined, to allow residual material to gravitate to a duct or ducts k leading to a transparent observation box o and thence to a discharge duct m. The air stream is induced by a fan 2 in the settling chamber y and enters the lower end of duct a through an adjustable inlet s, a pivoted deflector u directing the air upwardly towards screens i, j. The settling chamber y has conical lower walls leading to a rotary discharge valve 5, the wall remote from the adjustable chamber inlet w having baffles 6 to cause cascading of the material into valve 5. An adjustable air inlet 21 is provided just above valve 5 to provide a final aspiration of the lighter material settling in the chamber y, Fig. 2 shows an arrangement wherein the material is fed on to an inclined perforated screen 9 mounted in front of a second adjustable air inlet 7 and having its lower end pivoted to a slidably adjustable imperforate baffle 11 replacing the screen i of Fig. 1. In a modification of the Fig. 2 arrangement, the baffle 11 is fixed and screen 9 is stepped from screen j by a perforated spacing member. Various modifications of the Fig. 1 arrangement are described wherein screen i is integral with and stepped from screen j or is replaced either by curved imperforate feed plates separate from or integrally stepped from screen j, or by a conveyer band or fluted feed rollers. The second Provisional Specification describes an arrangement wherein a single curved perforated screen extends across the duct, one half having a horizontal baffle therebelow and air inlets being provided above and below the baffle. Alternatively, the upper half of the curved screen is formed imperforate and the horizontal baffle and upper air inlet omitted.
GB3041149A 1949-11-28 1949-11-28 Means for separating extraneous substances from, or for grading or sorting, granular, powdered or like materials Expired GB669215A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3041149A GB669215A (en) 1949-11-28 1949-11-28 Means for separating extraneous substances from, or for grading or sorting, granular, powdered or like materials

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3041149A GB669215A (en) 1949-11-28 1949-11-28 Means for separating extraneous substances from, or for grading or sorting, granular, powdered or like materials

Publications (1)

Publication Number Publication Date
GB669215A true GB669215A (en) 1952-03-26

Family

ID=10307278

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3041149A Expired GB669215A (en) 1949-11-28 1949-11-28 Means for separating extraneous substances from, or for grading or sorting, granular, powdered or like materials

Country Status (1)

Country Link
GB (1) GB669215A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108816768A (en) * 2018-06-27 2018-11-16 广西浩林人造板股份有限公司 A kind of wood dust recyclable device of multi-stage separation desanding
CN111632705A (en) * 2020-06-05 2020-09-08 卢洪宇 Granulation screening system is used in macromolecular material production

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108816768A (en) * 2018-06-27 2018-11-16 广西浩林人造板股份有限公司 A kind of wood dust recyclable device of multi-stage separation desanding
CN108816768B (en) * 2018-06-27 2023-07-25 广西浩林人造板股份有限公司 Multistage separation degritting's wood flour dirt recovery unit
CN111632705A (en) * 2020-06-05 2020-09-08 卢洪宇 Granulation screening system is used in macromolecular material production

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