DE59404158D1 - Method and device for grain size analysis in the fine and fine grain range - Google Patents

Method and device for grain size analysis in the fine and fine grain range

Info

Publication number
DE59404158D1
DE59404158D1 DE59404158T DE59404158T DE59404158D1 DE 59404158 D1 DE59404158 D1 DE 59404158D1 DE 59404158 T DE59404158 T DE 59404158T DE 59404158 T DE59404158 T DE 59404158T DE 59404158 D1 DE59404158 D1 DE 59404158D1
Authority
DE
Germany
Prior art keywords
fine
screen fabric
grain
size analysis
screen
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 - Lifetime
Application number
DE59404158T
Other languages
German (de)
Inventor
Wolfram Dipl Ing Blachetta
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.)
Rheinische Werkzeug & Maschf
Original Assignee
Rheinische Werkzeug & Maschf
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 Rheinische Werkzeug & Maschf filed Critical Rheinische Werkzeug & Maschf
Application granted granted Critical
Publication of DE59404158D1 publication Critical patent/DE59404158D1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING 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
    • B07B11/00—Arrangement of accessories in apparatus for separating solids from solids using gas currents
    • B07B11/04—Control arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING 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
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING 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
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
    • B07B1/50—Cleaning
    • B07B1/55—Cleaning with fluid jets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING 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
    • B07B13/00—Grading or sorting solid materials by dry methods, not otherwise provided for; Sorting articles otherwise than by indirectly controlled devices
    • B07B13/14—Details or accessories
    • B07B13/18—Control
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING 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
    • B07B4/00—Separating solids from solids by subjecting their mixture to gas currents
    • B07B4/08—Separating solids from solids by subjecting their mixture to gas currents while the mixtures are supported by sieves, screens, or like mechanical elements

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Adjustment And Processing Of Grains (AREA)
  • Treatment Of Fiber Materials (AREA)

Abstract

In order to provide a method for grain-size analysis in the fine and very fine range by means of a gas-jet screen, the screening material being delivered onto the screen fabric, a gas jet being blown through the screen fabric and the screening material by means of a slit nozzle (2) rotating underneath the screen fabric, fine fractions being entrained by the gas stream and being transported by the latter in the opposite direction through the screen fabric to a discharge orifice located underneath the screen fabric, the said method allowing exact and accurately reproducible measured values, it is proposed that the gas stream be recorded quantitatively and be kept constant over the course of the screening operation. <IMAGE>
DE59404158T 1993-11-23 1994-08-20 Method and device for grain size analysis in the fine and fine grain range Expired - Lifetime DE59404158D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4339834A DE4339834A1 (en) 1993-11-23 1993-11-23 Method and device for grain size analysis in the fine and fine grain range

Publications (1)

Publication Number Publication Date
DE59404158D1 true DE59404158D1 (en) 1997-10-30

Family

ID=6503193

Family Applications (2)

Application Number Title Priority Date Filing Date
DE4339834A Withdrawn DE4339834A1 (en) 1993-11-23 1993-11-23 Method and device for grain size analysis in the fine and fine grain range
DE59404158T Expired - Lifetime DE59404158D1 (en) 1993-11-23 1994-08-20 Method and device for grain size analysis in the fine and fine grain range

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE4339834A Withdrawn DE4339834A1 (en) 1993-11-23 1993-11-23 Method and device for grain size analysis in the fine and fine grain range

Country Status (4)

Country Link
EP (1) EP0654308B1 (en)
JP (1) JP2787656B2 (en)
AT (1) ATE158519T1 (en)
DE (2) DE4339834A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19830050A1 (en) * 1998-07-04 2000-01-13 Hosokawa Alpine Ag & Co Operating method for air jet sifting device for particle size analysis
DE102010015364B4 (en) * 2010-04-17 2013-06-27 Hosokawa Alpine Ag Air Jet Sieve
CN105963896B (en) * 2016-06-28 2021-06-15 广威消防科技有限公司 Fire control shower nozzle examination water qualification rate sieving mechanism
CN109201174B (en) * 2018-09-16 2020-11-20 义乌市添诚科技有限公司 Coal crushing detection method, coal crushing adjustment method and coal crusher
CN109201175B (en) * 2018-09-16 2020-11-24 义乌市添诚科技有限公司 Coal pulverizer
KR20210016716A (en) 2019-08-05 2021-02-17 삼성전자주식회사 Particulate matter measurement apparatus and method

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2414686A1 (en) * 1974-03-27 1975-10-16 Allgaier Werke Gmbh Siever with pneumatic material delivery - and pneumatic counterflow sieve-cleaning, maintaining single-grain max layer
GB2021442B (en) * 1978-05-26 1982-09-02 Pozzolanic Ltd Sieving
DE3513986A1 (en) * 1985-04-18 1986-10-30 Hazemag Dr. E. Andreas GmbH & Co, 4400 Münster CLASSIFICATION AND VISIBILITY SYSTEM FOR THE SEPARATION OF UNWANTED GOOD PARTICLES FROM A BULK MATERIAL
US4678560A (en) * 1985-08-15 1987-07-07 Norton Company Screening device and process

Also Published As

Publication number Publication date
JPH07198581A (en) 1995-08-01
ATE158519T1 (en) 1997-10-15
EP0654308B1 (en) 1997-09-24
JP2787656B2 (en) 1998-08-20
DE4339834A1 (en) 1995-05-24
EP0654308A1 (en) 1995-05-24

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