EP0533881B1 - Griessputzmaschine mit umluftbetrieb - Google Patents

Griessputzmaschine mit umluftbetrieb Download PDF

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Publication number
EP0533881B1
EP0533881B1 EP92907745A EP92907745A EP0533881B1 EP 0533881 B1 EP0533881 B1 EP 0533881B1 EP 92907745 A EP92907745 A EP 92907745A EP 92907745 A EP92907745 A EP 92907745A EP 0533881 B1 EP0533881 B1 EP 0533881B1
Authority
EP
European Patent Office
Prior art keywords
air
semolina
cleaning machine
air supply
supply duct
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
EP92907745A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0533881A1 (de
Inventor
Roman Müller
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.)
Buehler AG
Original Assignee
Buehler AG
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 Buehler AG filed Critical Buehler AG
Publication of EP0533881A1 publication Critical patent/EP0533881A1/de
Application granted granted Critical
Publication of EP0533881B1 publication Critical patent/EP0533881B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B07B11/02—Arrangement of air or material conditioning accessories
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02B—PREPARING GRAIN FOR MILLING; REFINING GRANULAR FRUIT TO COMMERCIAL PRODUCTS BY WORKING THE SURFACE
    • B02B1/00—Preparing grain for milling or like processes
    • B02B1/02—Dry treatment
    • 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
    • B07B9/00—Combinations of apparatus for screening or sifting or for separating solids from solids using gas currents; General arrangement of plant, e.g. flow sheets
    • B07B9/02—Combinations of similar or different apparatus for separating solids from solids using gas currents

Definitions

  • the invention relates to a semolina cleaning machine, the material being cleaned by means of a plurality of oscillating sieve layers forming a cleaning compartment and separated via product discharges for the sieve repulsion and under the sieve layers with a plurality of adjustable discharge nozzles for transferring the sieve diarrhea into two or more collecting channels into the desired fractions becomes.
  • the usual sieving process works without air through the sieve; in contrast, a fluid bed with a strong air flow is created in such a way that the material assumes a fluid-like, flowable state.
  • Very specific laws apply in the fluidized bed, whereby the separation into large and small parts is only the best known effect.
  • the main task of the semolina cleaning machine is the extraction of semolina and haze, various granulations and the reading out of all shell parts which have a darker, often brownish color. Furthermore, with the semolina cleaning machine, grinding products with different qualitative properties can be separated.
  • German patent no. 29 181 from 1884 a semolina cleaning machine with a completely closed system has become known.
  • a twin ventilator sucks the air out of the machine head, which has filter cloth cleaning, and returns it along the product collecting area to the lower side of the sieve.
  • the air supply duct is arranged on the side and the diarrhea chamber is thus arranged on the side in a closing manner.
  • EP-A-155 527 and EP-A-155 537 further describe a modern semolina cleaning machine in which the necessary air is supplied from outside via side inlet slots via an open cleaning box. The product is accessible through the open plaster box and conditionally sanitation is provided.
  • the object of the invention was now to improve the cleaning of semolina, in particular with regard to ventilation technology and hygiene, but to improve it while maintaining all the essential advantages of the modern open concepts.
  • the new invention relates to a semolina cleaning machine with a plurality of oscillatingly mounted sieve layers, air supply and air discharge of a product feed, a product discharge for the sieve rejection and, under the sieve layers, a product collecting tray with a large number of adjustable discharge nozzles for the transfer of the sieve diarrhea into two or more Sasunel channels and is characterized in that the product collecting tray with an air supply duct extending over its length forms an outward-closing diarrhea chamber and, together with the sieve layers, form an oscillating unit. Self-cleaning results in particular from the fact that the air supply duct is part of the oscillating unit.
  • the air supply duct can, if several semolina cleaning compartments. Machines are in operation at the same time, the air supply duct is connected directly as an air return duct of a circulating air system (air circulation), or in the case of a single machine without circulating air, the fresh air in the area of the machine head, preferably at an end part of the semolina cleaning machine, is sucked in via an air grille, i.e. no longer from the Floor area as before.
  • air circulation air circulation
  • the semolina cleaning machine is characterized in that the exhaust air from at least two cleaning compartments is collected in an air discharge line and sucked off via a separately arranged aspiration, cleaned and returned as supply air under the sieve layers via a supply channel in each case, an overhead inlet to the air supply channel to the side next to it the sieve trays, so that recirculated air from above next to the Sieve trays pass into the flow chamber and thus under the sieve trays.
  • the discharge nozzles for the product are preferably arranged on the collecting base and have throttles.
  • the collecting troughs are designed as vibrating troughs, the throttles preferably being designed to be adjustable in cross section.
  • the screen layers, together with the collecting base and the collecting troughs, can each have their own oscillating drive, the collecting troughs preferably also being designed as closed channels and having transparent removal flaps for product samples on the top in the longitudinal direction.
  • the air supply duct be arranged over the length of the screen layers and approximately in the central region of the screen layer. In this way, the entire area above the sieves remains free for window elements for visual inspection of the fluid bed.
  • Another very particularly advantageous embodiment is to arrange a plurality of air quantity adjustment flaps between the air supply duct and the diarrhea.
  • the air inlet for the air supply duct can be arranged on one end side of the semolina cleaning machine and the supply duct approximately at the same height as the sieve position.
  • the adjustment flaps are on the pressure side of the system.
  • the entire air circulation system with an exhaust air line, so that at least the upper area of the semolina cleaning machine can be placed under negative pressure with respect to the surroundings.
  • a semolina cleaning machine 1 is supported on a bracket 2 and has a fixed head part 3.
  • the material is fed in via a product inlet 4 and an inlet cascade, and is passed directly to the uppermost sieve layer 5 'of the sieves 5.
  • the screens 5 are vibrated together by a vibration exciter 30.
  • the material obtained via the sieve layers 5 ', 5'',5''' as a push-off at the deep end is discharged via product discharge channels 6 ', 6'',6''' and in FIG. 1 via a common product discharge channel 6.
  • the sieve diarrhea reaches a product collecting tray 7 and via a plurality of transfer channels 8, 8 ', 8''etc. and via respective throttles 9 into one of two collecting channels 9 or 9. 9 'of which the goods are either passed on via a drain pipe 10 or 11 depending on the product quality. All vibrating parts have a spring element 12 as a support.
  • an air discharge nozzle 13 is arranged, from which the dust-containing air via a dust separator 14, a fan 15 and an air return line 16, and via a flap box 17 as a cleaned fresh air flow via an air supply duct 18 into a product diarrhea 19 (FIG . 2) arrives. It is important that the flow layer on the uppermost sieve layer 5 can be checked with the eye via windows 20 as before.
  • the semolina cleaning machine by two identical machines, respectively. shown as a double machine, as is common for semolina cleaning machines. It is essential, however, that the air supply duct 18 is provided in two for targeted control or air flow for each half of the machine.
  • the air supply and route are common.
  • the transition from the air supply duct 18 into the diarrhea chamber 19 can be adjusted by means of air regulating slide 20 via handwheels 21.
  • the fixed head part 3 is held on a central support 2 '.
  • Each cleaning compartment with sieve layers 5, product collecting base 7 and air supply duct 18 forms an oscillating unit which can be connected as a double unit and which is connected to the fixed machine parts via flexible sleeves 33.
  • the product flow can be directed from each individual transfer channel 8, 8 ′, 8 ′′, etc. either into the collecting channel 9 or into the collecting channel 9 ′ via an adjusting flap 22. This can be done by swiveling to the right on the left machine or to the left on the right machine. A product sample can be removed from the respective transfer channel by opening removal flaps 23.
  • FIG. 3 shows the air flow from the diarrhea chamber 19 through the sieve layers 5 ', 5' ', 5' '' and an air extraction chamber 24.
  • FIG. 4 combines FIGS. 2 and 3, ie represents 2 different cuts, the air discharge on the left and the air supply of a semolina cleaning machine on the right.
  • FIG. 5 basically shows 3 semolina cleaning machines, each shown as a double machine, in the upper half of the picture the air discharge, in the lower half of the picture the air supply to the same machines.
  • FIG. 5 also shows a dust filter 25 and an exhaust air line 26 with a controllable throttle valve 27 for regulating the air pressure conditions in the system.
  • the solution according to the invention also allows a traditional mode of operation, insofar as it relates to air extraction.
  • the air intake can, however, as indicated by arrows 30, 31, 32, take place from the upper room, that is to say no longer from below, from the area near the floor, which normally has a higher level of dust or bacteria.
  • an air intake grille is attached at the appropriate point.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Combined Means For Separation Of Solids (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Cleaning In General (AREA)
  • Winding Of Webs (AREA)
  • Manufacturing Of Steel Electrode Plates (AREA)
  • Air Filters, Heat-Exchange Apparatuses, And Housings Of Air-Conditioning Units (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Pretreatment Of Seeds And Plants (AREA)
EP92907745A 1991-04-15 1992-04-14 Griessputzmaschine mit umluftbetrieb Expired - Lifetime EP0533881B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH1123/91 1991-04-15
CH112391 1991-04-15
PCT/CH1992/000071 WO1992018257A1 (de) 1991-04-15 1992-04-14 Verfahren zur luftführung für das putzen von griessen sowie griessputzmaschine

Publications (2)

Publication Number Publication Date
EP0533881A1 EP0533881A1 (de) 1993-03-31
EP0533881B1 true EP0533881B1 (de) 1996-11-06

Family

ID=4203031

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92907745A Expired - Lifetime EP0533881B1 (de) 1991-04-15 1992-04-14 Griessputzmaschine mit umluftbetrieb

Country Status (11)

Country Link
US (1) US5348161A (ja)
EP (1) EP0533881B1 (ja)
JP (1) JP2675195B2 (ja)
KR (1) KR960002946B1 (ja)
AT (1) ATE144921T1 (ja)
DE (2) DE4126065C2 (ja)
EE (1) EE03041B1 (ja)
ES (1) ES2093824T3 (ja)
RU (1) RU2090271C1 (ja)
UA (1) UA26092C2 (ja)
WO (1) WO1992018257A1 (ja)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5597076A (en) * 1994-12-30 1997-01-28 Kershner; Robert Grain separator
DE19717514A1 (de) * 1997-04-25 1998-10-29 Peter Dieckmann Verfahren und Vorrichtung zur Aufbereitung von getrockneten Kräutern
AUPP111997A0 (en) * 1997-12-24 1998-01-22 M E Mckay & Associates Pty Ltd Separation using air flows of different velocities
US5984105A (en) * 1998-06-03 1999-11-16 General Kinematics Corporation Material classifying apparatus
DE102006005968A1 (de) * 2006-02-08 2007-08-09 Bühler AG Siebvorrichtung für Kontrollsiebung
DE102006048655A1 (de) * 2006-10-14 2008-04-17 Fischerwerke Artur Fischer Gmbh & Co. Kg Anker
DE102007038038A1 (de) * 2007-08-10 2009-02-12 Bühler AG Siebvorrichtung für Kontrollsiebung
CN101850335B (zh) * 2009-03-31 2014-05-21 株式会社佐竹 净化装置
EP2402093B1 (en) * 2010-06-30 2015-06-17 Alstom Technology Ltd Screening device and method of screening
PL231029B1 (pl) * 2012-07-25 2019-01-31 Akademia Gorniczo Hutnicza Im Stanislawa Staszica W Krakowie Urządzenie do wibracyjnej regeneracji zużytej masy odlewniczej
DE102013010841A1 (de) * 2013-06-28 2014-12-31 Dirk Barnstedt Vorrichtung zum Trennen von flächigen und körperförmigen leichten und schweren Feststoffen
WO2015176173A1 (en) 2014-02-20 2015-11-26 Thavaratnam Vasanthan System and method for fractionating grain
CN106216065B (zh) * 2016-07-29 2018-04-17 兴化市联富食品有限公司 用于生产脱水蔬菜粉末的风选机
CN109789447B (zh) * 2016-08-01 2022-04-22 纽卡斯尔大学 用于颗粒的干式分选的装置和方法
CN106391474B (zh) * 2016-11-26 2020-01-17 扬州市仙龙粮食机械有限公司 一种高效清粉机
CN108480214B (zh) * 2018-05-30 2023-05-12 河北苹乐面粉机械集团有限公司 一种清粉机
EP3875173A1 (de) 2020-03-04 2021-09-08 Bühler AG Futter- oder nahrungsmittelmühle
CN113007998B (zh) * 2021-03-11 2022-06-07 湖南文理学院 基于旋转式面粉去块烘干装置

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE95036C (ja) *
DE29181C (de) * H. SECK in Dresden Absaug-Apparat für Mahlmaschinen mit rotirendem Filtertuche
DE193580C (ja) * 1906-10-06
US2217717A (en) * 1938-12-27 1940-10-15 Ind Rayon Corp Reel clutch mechanism
US3608716A (en) * 1969-01-27 1971-09-28 Imp Tobacco Co Ltd Recirculating pneumatic separator
GB1580655A (en) * 1977-07-09 1980-12-03 Lappeenrannan Konepaja Oy Method and apparatus for pneumatic fine classification
DE2748336A1 (de) * 1977-10-28 1979-05-03 Heinz Jaeger Umluftsichter
IT1124576B (it) * 1978-10-26 1986-05-07 Hartmann Wibau Maschf Disposizione e conformazione di un setaccio in un impianto in convogliamento ad aria di aspirazione funzionante sostanzalmente ad una pressione compresa fra 0,6 e 0,8
US4213852A (en) * 1979-01-15 1980-07-22 Bernard Etkin Method and apparatus for particle classification
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DE3410573C2 (de) * 1984-03-22 1986-03-13 Gebrüder Bühler AG, Uzwil Vorrichtung zum Putzen von Grießen
ATE31254T1 (de) * 1984-05-08 1987-12-15 Buehler Ag Geb Vorrichtung und verfahren zum trennen von koernigem gut.
EP0161327B1 (en) * 1984-05-17 1988-08-24 TPT TECHNOLOGIES S.p.A. A separator device for the separation of the components of edible meals or the like
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IT1220666B (it) * 1988-03-22 1990-06-15 Sangati Spa Struttura di macchina semolatrice

Also Published As

Publication number Publication date
US5348161A (en) 1994-09-20
DE4126065A1 (de) 1992-10-22
WO1992018257A1 (de) 1992-10-29
EE03041B1 (et) 1997-10-15
DE4126065C2 (de) 1994-09-29
ATE144921T1 (de) 1996-11-15
ES2093824T3 (es) 1997-01-01
KR960002946B1 (ko) 1996-03-02
EP0533881A1 (de) 1993-03-31
UA26092C2 (uk) 1999-04-30
JP2675195B2 (ja) 1997-11-12
DE59207487D1 (de) 1996-12-12
RU2090271C1 (ru) 1997-09-20
KR930700223A (ko) 1993-03-13
JPH05507880A (ja) 1993-11-11

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