EP0978317A1 - Appareil broyeur balayé par un courant d'air comportant un rotor à impact rotatif - Google Patents

Appareil broyeur balayé par un courant d'air comportant un rotor à impact rotatif Download PDF

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Publication number
EP0978317A1
EP0978317A1 EP99114886A EP99114886A EP0978317A1 EP 0978317 A1 EP0978317 A1 EP 0978317A1 EP 99114886 A EP99114886 A EP 99114886A EP 99114886 A EP99114886 A EP 99114886A EP 0978317 A1 EP0978317 A1 EP 0978317A1
Authority
EP
European Patent Office
Prior art keywords
gas
distance
machine according
striking
crushing machine
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
EP99114886A
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German (de)
English (en)
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EP0978317B1 (fr
Inventor
Wilhelm Pallmann
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.)
Pallmann Maschinenfabrik GmbH and Co KG
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Pallmann Maschinenfabrik GmbH and Co KG
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
    • B02C13/02—Disintegrating by mills having rotary beater elements ; Hammer mills with horizontal rotor shaft
    • B02C13/06—Disintegrating by mills having rotary beater elements ; Hammer mills with horizontal rotor shaft with beaters rigidly connected to the rotor
    • B02C13/08—Disintegrating by mills having rotary beater elements ; Hammer mills with horizontal rotor shaft with beaters rigidly connected to the rotor and acting as a fan
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
    • B02C13/26—Details
    • B02C13/28—Shape or construction of beater elements
    • B02C13/2804—Shape or construction of beater elements the beater elements being rigidly connected to the rotor

Definitions

  • the invention relates to a gas-flow crushing machine with a rotating impact wheel system according to the preamble of claim 1 and of claim 8.
  • Such machines are mainly used for the processing of waste wood used, the waste wood is crushed until it is used as a starting material z. B. can be used in the chipboard industry.
  • the trend goes according to the secondary raw materials created during recycling in the woodworking industry, increasingly effective machines with use higher throughputs.
  • machine performance cannot be achieved by a proportional one alone Achieve enlargement of the dimensions of known machines. That would find uncontrollable shredding processes take place in the shredding room Inhomogeneity and thus reduced quality of the shredded material.
  • a generic shredder is for example from the German patent 19 05 286 and the German designation 19 09 022 known.
  • a beater mill with a rotating beater wheel system is disclosed there, in which the feed material is axially in by the air flow generated by the beater wheel the shredding room is sucked. There the air and material flow is on the cone-shaped central area of the racket wheel in one of the Deflector deflected annular disc-shaped channel that the Feed material feeds an annular, corrugated grinding track. In the grinding gap between the corrugations of the grinding track and the striking edges of the beater wheel the feed is crushed to the desired fineness.
  • the air and material flow on the grinding path towards the screen surfaces redirected, through which the shredded material is viewed and removed.
  • the shredding principle is based on a swirling of the feed material With the help of vortices generated on the inner surface of the grinding track, the Feed material due to repeated impact on impact plates and corrugations is unlocked.
  • the invention is based on the task Efficiency of a shredder of the type mentioned above to increase.
  • the basic idea of the invention is to unlock the Material necessary vortex zone, when a club plate is passed on the shredding path arises through appropriate measures shape that a more intense swirling and thus an extremely effective Dissolution of the feed takes place.
  • the feed is always checked passed through the shredding room, whereby a shredded material of constant size and high quality.
  • the measures according to the invention for no increase in energy consumption, but only convert the energy inherent in the racket wheel into more Shredding performance.
  • this is achieved by arranging a variety of Punch plate pairs, consisting of two at a short distance opposite striking plates. This creates an alternating sequence the impact plates on the shredding path with a short distance as a result the short distance between a pair of striking plates and a larger distance due to the greater distance between the pairs of striking plates.
  • the gap between the Striking plates of a pair of striking plates limited in depth.
  • This can e.g. B. by appropriate mounting of the striking plates on the carrier plate, so that a U-shaped channel is formed by the support plate and impact plates.
  • the resulting spatially defined conditions largely determine uniform flow conditions with the consequence of a constantly high Efficiency.
  • Another way to take advantage of the flow conditions in the vortex zone to influence is done by keeping different distances between the striking plates of a pair of striking plates and the comminution path. So carries an increase in the distance between the in the direction of rotation rear impact plate and the effective area compared to the distance of the front Striking plate and the active surface for a faster exit from the spinal zone between the striking plates. In reverse order, the Residence time of the comminuted material in this zone can be increased.
  • the arrangement according to the invention of two striking plates proves to be Forming a pair of striking plates as extremely advantageous since the position of the individual impact plates in the radial direction independently of each other only by Loosen the fastening screws and move them radially Can be adjusted. This makes it easy and, above all, quick and way given a possibility depending on the crushing process optimize the size of the material to be shredded by the geometric conditions be changed in a targeted manner in order to control the material flow and vortex formation.
  • the vortex zone according to claim 8 by the arrangement concentric washers on the beater wheel influenced in a suitable manner become.
  • One or more of these washers can be removed from the carrier washer or carrier ring disc in the direction of the free ends of the striking plates on Racket wheel be arranged, whereby between the discs or Washer chambers are formed, which are open in the radial direction.
  • Under The air and material flow passes through these washers on its way through the comminution chamber, with air swirls flowing into the individual chambers are generated.
  • These vortices are from the behind the Striking plates generated vortices superimposed, their axis of rotation by 90 ° is offset. This creates extremely complex flow conditions of which the feed material is carried along and against the shredding path or Ring discs is thrown, so that the feed to an extreme effective way is unlocked.
  • the distance between each ring washer to the shredding path and the distance between the washers adjustable.
  • the swirl chamber can be tailored to the type of feed, the requirements for maintaining a constant material flow and the desired degree of fineness can be adjusted.
  • the double current mill 1 has a housing 2, the one drum-shaped crushing room 3 encloses.
  • the front of the Housing 2 has a central, circular opening, which by means of a pivotable housing cover 4 is closable.
  • the housing cover 4 has a central inlet opening 5, which is used to feed the double stream mill 1 serves.
  • a is on the housing cover 4 above the inlet opening 5
  • Feeding shaft 6 attached, in the manner of a heavy goods separator is trained.
  • the Feed chute 6 in its interior pivotable guide surfaces 7.
  • the beater wheel 8 is free in the interior of the drum-shaped comminution space 3 rotatably arranged.
  • the beater wheel 8 is of a horizontal, the Inlet opening 5 opposite drive shaft 9, which at the rear of the Housing 2 is mounted in the bearings 10, driven.
  • To connect the Double current mill 1 to an external engine carries the outside of the Housing 2 lying end of the drive shaft 9, a multi-grooved disc 11.
  • Das other end of the drive shaft 9 carries the actual bat wheel 8.
  • Das Bat wheel 8 consists of a cylindrical seat 12 which on the Drive shaft 9 is plugged in and non-positively connected to it.
  • the cylindrical seat 12 is surrounded by a coaxial support plate 13, the opposite a likewise coaxial carrier washer 14 in a predetermined Distance is arranged so that between the support plate 13 and Ring carrier disk 14, an annular disk-shaped channel 26 is formed.
  • the inner one The circumference of the carrier ring disc 14 closes with a small gap Housing cover 4, which for this purpose with the formation of a conical Widening 15 is guided into the interior of the crushing room 3.
  • On the outside The circumference of the carrier disk 13 and the carrier ring disk 14 are a large number parallel carrier plates 16 attached in a ring shape, on the front and Back of the striking plates 17 are attached.
  • the central region of the carrier disk 13 has a deflection device 18 in Form of a hollow truncated cone, on the widening in the direction of entry Conical surface one for the division of the air and material flow parallel and coaxial arranged to the support plate 13 arranged washer 19.
  • the beater wheel 10 is at a radial distance from a cylindrical active surface 20 surround so that an annular gap 21 between beater wheel 10 and active surface 20 (Fig. 2) arises.
  • the effective area 20 is in its central region as a grinding track 22 trained, for which the surface is covered with impact and corrugated elements. Which regions of the active surface 20 adjoining on both sides of the grinding track 22 consist of annular sieve tracks 23 and 24 with radial sieve passages, via which the regrind is finally arranged in the bottom of the housing Exhaust opening 25 arrives.
  • the air and material flow is symbolically represented in FIG. 1 by arrows.
  • the Feed material first arrives from the top in the feed chute 6 and is by the air flow generated by the beater wheel 8 through the inlet opening 5 in sucked the inside of the crushing room 3.
  • the air and Material flow deflected by means of the guide surfaces 7 by more than 90 °, wherein Impurities in the feed, such as B. nails, screws, etc., due to their high dead weight and its resulting inertia over the below open feed chute 6.
  • the Grinding track 22 also causes a further division of the air and material flow to the laterally adjoining screen tracks 23 and 24 through which the Airflow with the sufficiently fine material occurs and the double flow mill 1 leaves again via the outlet opening 25.
  • the 2 shows a radial section through the outer region of the Beater wheel 8 and the grinding track 22.
  • the grinding track 22 encloses this Beater wheel 8 concentric.
  • the inner surface of the grinding track 22 is axial Ripples 27 formed, in the present example by semicircular Wells 28 are separated, otherwise different, the desired Degree of fineness can be designed accordingly.
  • the feed material gradually arrives with an axial Direction of movement out of the area of the grinding track 22 and into the area the sieve tracks 23 and 24 into it.
  • the bat wheel 8 strokes with his outer circumference of the carrier disk 13 evenly distributed in pairs Striking plates 17a, 17b along the inner surface of the grinding track 22.
  • the carrier plates 16 which are the Rigidly connect the carrier ring disk 14 to the carrier disk 13 and to the latter
  • a striking plate 17a, 17b is fixed on the front and back.
  • the beater wheel 8 rotates counterclockwise in the direction of the arrow, is generated by the striking plates 17a, 17b, an air flow that the entire Flushes through the crushing chamber 3 and carries the feed material with it. in the Air layers are also observed near the surface of the grinding track 22 low speed at which, due to the rotating striking plates 17a, 17b air is passed at high speed. In the annular gap 21 compresses the air between the striking plates 17a, 17b and the grinding track 22, before it can expand again behind the striking plate 17a, 17b. Thereby there is a pronounced spinal zone behind the individual Striking plates 17a, 17b. The resulting vortices have a Drive shaft parallel axis of rotation and are in Fig. 2 with the ring arrows 29a, 29b marked.
  • Fig. 3 shows a further possibility to vortex formation in the comminution room Taxes. Only the upper part of a double-stream mill 1 is shown, the same reference numerals for the same features as in FIG. 1 have been used.
  • rotatable beater wheel 8 consisting of a coaxial carrier disc 13 and Carrier washer 14 and carrier plates 16 and impact plates attached thereto 17.
  • the beater wheel 8 is at a radial distance from an active surface 20 in shape a grinding track 22 with screen tracks 23 and 24 adjoining on both sides enclosed.
  • annular Channel 31 formed, which is divided by two annular walls 32 and 33. In the channel 31 is the comminuted and shredded material of the sieves 23 and 24 Outlet opening 25 is fed to the bottom of the double-stream mill 1.
  • Concentric to the carrier disc 13 and ring carrier disc 14 are to the free Ends of the striking plates 17 and carrier plates 16 towards further annular disks 34, 35, 36 and 37 arranged in this way with the striking plates 17 in form open chambers in the radial direction.
  • the distance between the washers 34 and 35 or 36 and 37 to one another and to the carrier disk 13 or Carrier washer 14 and towards the active surface 20 is dependent on the Properties of the feed material, the desired fineness of the shredded material and freely adjustable to control the material flow.
  • Fig. 4 The operation of a double-stream mill 1 according to the invention setting flow conditions are shown in Fig. 4 on a large scale.
  • the arrow 38 symbolizes how the air and material flow in that formed by the carrier disk 13 and carrier ring disk 14 (FIG. 3) annular disk-shaped channel 26 in the radial direction between the striking plates 17 passes through on the grinding track 22, where it on both sides in Direction of the screen tracks 23 and 24 is deflected.
  • the axis of rotation extends tangentially to the direction of rotation of the beater wheel 8. The the same process is repeated in the chambers 40 and with the Chamber 41 formed chamber 41, where further vortex zones arise.
  • Vortex zones whose axes of rotation are offset by 90 °, arise extremely complex flow conditions leading to an intense and powerful Swirl the feed material. The result is quick and effective shredding of the feed material in a narrow fluctuation range in terms of fineness.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Pulverization Processes (AREA)
EP19990114886 1998-08-04 1999-07-30 Appareil broyeur balayé par un courant d'air comportant un rotor à impact rotatif Expired - Lifetime EP0978317B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19835144 1998-08-04
DE1998135144 DE19835144C2 (de) 1998-08-04 1998-08-04 Gasdurchströmte Zerkleinerungsmaschine mit rotierendem Schlagradsystem

Publications (2)

Publication Number Publication Date
EP0978317A1 true EP0978317A1 (fr) 2000-02-09
EP0978317B1 EP0978317B1 (fr) 2004-04-07

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ID=7876387

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Application Number Title Priority Date Filing Date
EP19990114886 Expired - Lifetime EP0978317B1 (fr) 1998-08-04 1999-07-30 Appareil broyeur balayé par un courant d'air comportant un rotor à impact rotatif

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EP (1) EP0978317B1 (fr)
DE (1) DE19835144C2 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6360976B1 (en) * 1998-12-18 2002-03-26 Pallmann Maschinenfabrik Gmbh & Co. Kg Element of a drum-shaped pulverizing apparatus
EP2363208A3 (fr) * 2010-02-15 2012-05-30 Hitachi Power Europe GmbH Dispositif de broyage doté d'un élément de modification du flux de poussière
EP2992960A1 (fr) * 2014-09-02 2016-03-09 Pallmann Maschinenfabrik GmbH & Co. KG Dispositif de broyage de materiaux de chargement avec tri prealable
CN111686880A (zh) * 2020-06-24 2020-09-22 江苏丰尚智能科技有限公司 一种双级超微粉碎机

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10048886C2 (de) * 2000-09-29 2002-11-14 Pallmann Kg Maschf Vorrichtung zum Zerkleinern von Aufgabegut mit einem um eine Drehachse rotierenden Zerkleinerungssystem
DE102010009894A1 (de) 2010-03-02 2011-09-08 Rolf Schatz Rotor-Mahlwerkzeug für Rotorprallmühlen

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1424225A (en) * 1922-02-25 1922-08-01 Williams Patent Crusher & Pulv Coved pivoted hammer
DE1905286A1 (de) 1969-02-04 1970-10-29 Ludwig Pallmann Maschinenfabri Siebkorbmuehle
DE1909022A1 (de) * 1969-02-22 1970-11-26 Ludwig Pallmann Maschinenfabri Schlaegermuehle
FR2270004A1 (en) * 1974-04-18 1975-12-05 Nagy Johann Beater mill with precise automatic control - giving reduced heating and uniform granulation of spinning stream of material has baffles

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2263723C3 (de) * 1972-12-28 1979-09-13 Alpine Ag, 8900 Augsburg Schlägermühle

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1424225A (en) * 1922-02-25 1922-08-01 Williams Patent Crusher & Pulv Coved pivoted hammer
DE1905286A1 (de) 1969-02-04 1970-10-29 Ludwig Pallmann Maschinenfabri Siebkorbmuehle
DE1909022A1 (de) * 1969-02-22 1970-11-26 Ludwig Pallmann Maschinenfabri Schlaegermuehle
DE1909022B2 (de) 1969-02-22 1973-08-23 Ludwig Pallmann Maschinenfabrik u Mahlwerk KG, 6660 Zweibrucken Schlaegermuehle
FR2270004A1 (en) * 1974-04-18 1975-12-05 Nagy Johann Beater mill with precise automatic control - giving reduced heating and uniform granulation of spinning stream of material has baffles

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6360976B1 (en) * 1998-12-18 2002-03-26 Pallmann Maschinenfabrik Gmbh & Co. Kg Element of a drum-shaped pulverizing apparatus
EP2363208A3 (fr) * 2010-02-15 2012-05-30 Hitachi Power Europe GmbH Dispositif de broyage doté d'un élément de modification du flux de poussière
EP2992960A1 (fr) * 2014-09-02 2016-03-09 Pallmann Maschinenfabrik GmbH & Co. KG Dispositif de broyage de materiaux de chargement avec tri prealable
CN111686880A (zh) * 2020-06-24 2020-09-22 江苏丰尚智能科技有限公司 一种双级超微粉碎机

Also Published As

Publication number Publication date
EP0978317B1 (fr) 2004-04-07
DE19835144C2 (de) 2001-12-13
DE19835144A1 (de) 2000-02-17

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