EP0353126A1 - Maschine zum Sieben von staubigen, mehligen oder körnigen Produkten - Google Patents

Maschine zum Sieben von staubigen, mehligen oder körnigen Produkten Download PDF

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Publication number
EP0353126A1
EP0353126A1 EP89402053A EP89402053A EP0353126A1 EP 0353126 A1 EP0353126 A1 EP 0353126A1 EP 89402053 A EP89402053 A EP 89402053A EP 89402053 A EP89402053 A EP 89402053A EP 0353126 A1 EP0353126 A1 EP 0353126A1
Authority
EP
European Patent Office
Prior art keywords
chamber
screen
screening
rotor
housing
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.)
Granted
Application number
EP89402053A
Other languages
English (en)
French (fr)
Other versions
EP0353126B1 (de
Inventor
James Rochette
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.)
FORPLEX SA
Original Assignee
FORPLEX SA
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 FORPLEX SA filed Critical FORPLEX SA
Priority to AT89402053T priority Critical patent/ATE73018T1/de
Publication of EP0353126A1 publication Critical patent/EP0353126A1/de
Application granted granted Critical
Publication of EP0353126B1 publication Critical patent/EP0353126B1/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
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/18—Drum screens
    • B07B1/20—Stationary drums with moving interior agitators

Definitions

  • the present invention relates to a machine for sieving powdery, floury or granular products.
  • the purpose of sieving such products is to separate the particles either to remove unwanted foreign bodies or to obtain a desired particle size.
  • Rotary devices or machines comprising in a one-piece casing, made of sheet metal or cast iron, a chute for feeding the product to be screened, a cylindrical screen chamber in which a screen paddle rotor rotated rotated by a motor and cooperating with a generally cylindrical screen, and a product discharge hopper passing through said screen.
  • a second hopper for the evacuation of products rejected by the sieve.
  • FIG. 1 An example of known equipment is shown in Figure 1 in exploded view.
  • Known devices are not entirely removable for cleaning by immersion in a neutralization bath, for example.
  • An apparatus of the above type operates as follows: the product is introduced into the chute 2, the Archimedes screw 6 ′ drives it and projects it inside the sieve 7 which is fixed; the cooperation of the 6 pal pallets rotating at high speed (between 300 and 1,000 rpm) and the mesh of the sieve causes particles of size less than or equal to the mesh to pass outside the sieve 7, where they are channeled towards the discharge hopper 4 through the walls of the chamber 3.
  • the screen 7 tends to clog. It is therefore necessary to intervene relatively frequently to replace and / or clean it. Likewise, the interior of the screening chamber must also be cleaned so that it can properly fulfill its function of channeling and evacuating the screened particles. Indeed, the free space between the outer wall of the screen 7 and the inner wall of the chamber 3 is relatively small and the accumulation of particles in this space ends up causing clogging of the device.
  • the rotor shaft 6 is not normally removable without the intervention of a mechanic; it is therefore the assembly of the Archimedes screw and the pallets which is removably mounted on the shaft.
  • the invention aims to remedy the drawbacks of these known devices and to provide a screening device which can be very quickly and completely cleaned by unskilled personnel and in which the screen can be easily replaced without this causing prolonged immobilization of the 'apparatus.
  • the invention provides for using in combination a sieving chamber and its evacuation hopper forming a whole separable from the rest of the machine, a sieve without frame, means for fixing both said chamber and said sieve. outside the chamber, and means for mounting the rotor carrying the Archimedes screw and the paddles, such that the latter can be completely removed from the apparatus and does not have any bearing inside the chamber sieving.
  • the device is completely empty and only has the inlet of the product and the outlet of refusals.
  • the chamber is made of all light, waterproof, non-tearable materials, for example a synthetic fabric.
  • the chamber and the screen are independent of each other.
  • they are assembled as a whole and made from a disposable material.
  • the device comprises a frame consisting of two vertical plates 11 and 12 connected together by spacers 13 or any other means of spacing.
  • a housing 14 housing two bearings 15 and 16 for a shaft hollow 17, the end of which protrudes outside the housing 14 carries a pulley 18.
  • the other end of the hollow shaft 17 ends in a central hole in the plate 11.
  • the housing 14 also forms a support for an electric motor 19, the output shaft 20 of which also carries a pulley 21.
  • the two pulleys 18 and 21 are connected together by a belt, not shown.
  • the plate 11 carries a ferrule 22 secured to a flange 23 fixed in a removable manner on the plate 11 by bolts 24. At its upper part, this ferrule 22 carries a chute 25 for admitting products.
  • clamps 26 and 27 On the outer part of the shell 22 are threaded two clamps 26 and 27 whose role will be described in more detail later.
  • the plate 12 opposite the plate 11 is crossed by a second ferrule 28 which includes a hopper 29 for discharging products rejected by the sieve.
  • the plate 11 is removably mounted on the spacers 13 by means of the nuts 30.
  • the ferrule 28 can be either permanently fixed to the plate 12 or removably mounted for example by a flange with an assembly identical to that of the ferrule 22 on the plate 11 .
  • a collar 31 and a crown 32 On the ferrule 28 are threaded a collar 31 and a crown 32 whose arrangement and role will be described in detail later.
  • the free end of the ferrule 28 is closed by a removable plate 33.
  • a screening chamber 34 forming a whole with its evacuation hopper 35 (see Figure 3).
  • this chamber is made of deformable material so that it can be engaged on the two adjacent ends ferrules 22 and 28, by means of flanges 34 ′ bordering the openings 34 ⁇ made on its opposite side walls 34.
  • a cylindrical screen 36 without reinforcement can be engaged on said ends.
  • a rotor 37 carrying an Archimedes screw 38 and pallets 39 is provided with a shaft 40 whose diameter is equal to the internal diameter of the hollow shaft 17.
  • the shaft 40 ends in a threaded end 41 intended to make projection in condition of use outside the pulley 18 and to be fixed on it by means of the washer 42 and the nut 43.
  • the blocking of the shaft 40 on the pulley 18 ensures its immobilization with respect to the hollow shaft 17 which drives it in rotation. It is understood that the rotor 37 can thus very easily and quickly be removed from the machine.
  • the screen 36 which has no reinforcement can be deformed so as to be threaded on the two ferrules 22 and 28. It is immobilized on the ferrule 22 by the clamp 26.
  • the other end of the screen 36 is fixed, by a clamp not shown, on a crown 32 which slides on the ferrule 28.
  • the crown 32 is provided with radial lugs 32 ′ intended to cooperate with means adjustment in translation (not shown) carried by the plate 12, for example screws.
  • the separability of the different elements of the machine offers the advantage of allowing thorough cleaning of each element (ferrules 22 and 28, rotor 37, screen 36, chamber 34) by individual soaking in a bath, for example.
  • the sieve does not have to be fitted with reinforcements and the interior of the chamber and of the ferrules is free from any fitting and fixing apparatus for the sieve. Their internal walls are therefore smooth, which further facilitates cleaning.
  • the end of the screen 36 which cooperates with the tension ring 32 is fixed on the latter by a collar.
  • FIG 4 is shown an advantageous embodiment in which the chamber 34 is integral with the screen 36 which is fixed to the flanges 34 '. There is thus formed a monobloc assembly which can advantageously be manufactured in disposable materials. For the use of such an assembly, it is necessary to use only a single clamp and a tensioning ring on either side of the removable chamber.
  • This variant embodiment is particularly advantageous when the apparatus according to the invention is used in industries where there is total incompatibility between the products successively treated, in particular in the pharmaceutical industry and the dye industry.
  • the rotor is mounted in a housing external to the chamber by means of a hollow shaft, and the housing carries the drive motor.
  • the motor can be fixed on a special frame in alignment with the housing and the rotor shaft can be directly supported by the housing bearings, a quick coupling between the motor output shaft and the end of the rotor shaft being provided.

Landscapes

  • Combined Means For Separation Of Solids (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)
  • Fertilizers (AREA)
EP89402053A 1988-07-25 1989-07-19 Maschine zum Sieben von staubigen, mehligen oder körnigen Produkten Expired - Lifetime EP0353126B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89402053T ATE73018T1 (de) 1988-07-25 1989-07-19 Maschine zum sieben von staubigen, mehligen oder koernigen produkten.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8810012 1988-07-25
FR8810012A FR2619324B1 (fr) 1988-07-25 1988-07-25 Machine pour le tamisage de produits poudreux, farineux ou granuleux

Publications (2)

Publication Number Publication Date
EP0353126A1 true EP0353126A1 (de) 1990-01-31
EP0353126B1 EP0353126B1 (de) 1992-03-04

Family

ID=9368737

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89402053A Expired - Lifetime EP0353126B1 (de) 1988-07-25 1989-07-19 Maschine zum Sieben von staubigen, mehligen oder körnigen Produkten

Country Status (4)

Country Link
EP (1) EP0353126B1 (de)
AT (1) ATE73018T1 (de)
DE (1) DE68900914D1 (de)
FR (1) FR2619324B1 (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2686273A1 (fr) * 1992-01-22 1993-07-23 Forplex Appareil de tamisage.
EP0815957A1 (de) * 1996-06-25 1998-01-07 Rudolf Schinke Siebmaschine zum Sieben von Pulvermaterial
EP0917911A2 (de) * 1997-11-20 1999-05-26 AZO GmbH & Co Siebmaschine
EP1813356A2 (de) 2006-01-25 2007-08-01 Jorma Kivimäki Feinanteilseparator
EP2676742A2 (de) * 2012-06-19 2013-12-25 Kek-Gardner Limited Zentrifugalsiebvorrichtung
DE202016003780U1 (de) 2016-06-17 2017-06-21 Azo Holding Gmbh Siebmaschine mit einem in einem Siebkorb umlaufenden Rotor und Siebkorb für eine solche Siebmaschine
EP3810328A4 (de) * 2018-06-19 2022-03-23 Ecomill LLC Verfahren zur trennung von feinen brüchen und groben brüchen unter verwendung eines vakuums

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1050203A (fr) * 1952-02-05 1954-01-06 Machine pour le nettoyage et l'aération de la farine et autres produits
DE1255461B (de) * 1965-06-05 1967-11-30 Adolf Zimmermann Maschb Siebtrommel mit rotierendem Schlaegerwerk

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1050203A (fr) * 1952-02-05 1954-01-06 Machine pour le nettoyage et l'aération de la farine et autres produits
DE1255461B (de) * 1965-06-05 1967-11-30 Adolf Zimmermann Maschb Siebtrommel mit rotierendem Schlaegerwerk

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2686273A1 (fr) * 1992-01-22 1993-07-23 Forplex Appareil de tamisage.
EP0815957A1 (de) * 1996-06-25 1998-01-07 Rudolf Schinke Siebmaschine zum Sieben von Pulvermaterial
EP0917911A2 (de) * 1997-11-20 1999-05-26 AZO GmbH & Co Siebmaschine
EP0917911A3 (de) * 1997-11-20 2000-07-12 AZO GmbH & Co Siebmaschine
EP1813356A2 (de) 2006-01-25 2007-08-01 Jorma Kivimäki Feinanteilseparator
EP1813356A3 (de) * 2006-01-25 2008-07-23 Jorma Kivimäki Feinanteilseparator
EP2676742A2 (de) * 2012-06-19 2013-12-25 Kek-Gardner Limited Zentrifugalsiebvorrichtung
EP2676742A3 (de) * 2012-06-19 2014-02-12 Kek-Gardner Limited Zentrifugalsiebvorrichtung
DE202016003780U1 (de) 2016-06-17 2017-06-21 Azo Holding Gmbh Siebmaschine mit einem in einem Siebkorb umlaufenden Rotor und Siebkorb für eine solche Siebmaschine
EP3810328A4 (de) * 2018-06-19 2022-03-23 Ecomill LLC Verfahren zur trennung von feinen brüchen und groben brüchen unter verwendung eines vakuums

Also Published As

Publication number Publication date
FR2619324A1 (fr) 1989-02-17
DE68900914D1 (de) 1992-04-09
EP0353126B1 (de) 1992-03-04
FR2619324B1 (fr) 1991-05-10
ATE73018T1 (de) 1992-03-15

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