EP2992960B1 - Dispositif de broyage de materiaux de chargement avec tri prealable - Google Patents

Dispositif de broyage de materiaux de chargement avec tri prealable Download PDF

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Publication number
EP2992960B1
EP2992960B1 EP15020150.7A EP15020150A EP2992960B1 EP 2992960 B1 EP2992960 B1 EP 2992960B1 EP 15020150 A EP15020150 A EP 15020150A EP 2992960 B1 EP2992960 B1 EP 2992960B1
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EP
European Patent Office
Prior art keywords
comminution
channel
air
secondary air
passage
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.)
Active
Application number
EP15020150.7A
Other languages
German (de)
English (en)
Other versions
EP2992960C0 (fr
EP2992960A1 (fr
Inventor
Hartmut 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
Original Assignee
Pallmann Maschinenfabrik GmbH and Co KG
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 Pallmann Maschinenfabrik GmbH and Co KG filed Critical Pallmann Maschinenfabrik GmbH and Co KG
Priority to RS20240421A priority Critical patent/RS65410B1/sr
Publication of EP2992960A1 publication Critical patent/EP2992960A1/fr
Application granted granted Critical
Publication of EP2992960C0 publication Critical patent/EP2992960C0/fr
Publication of EP2992960B1 publication Critical patent/EP2992960B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • B02C13/288—Ventilating, or influencing air circulation
    • 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
    • B02C13/10—Disintegrating by mills having rotary beater elements ; Hammer mills with horizontal rotor shaft and axial flow
    • 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
    • B02C13/286—Feeding or discharge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
    • B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
    • B02C18/16—Details
    • B02C18/22—Feed or discharge means
    • B02C18/2225—Feed means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
    • B02C23/02—Feeding devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
    • B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
    • B02C23/18—Adding fluid, other than for crushing or disintegrating by fluid energy
    • B02C23/24—Passing gas through crushing or disintegrating zone
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
    • B02C23/18—Adding fluid, other than for crushing or disintegrating by fluid energy
    • B02C23/40—Adding fluid, other than for crushing or disintegrating by fluid energy with more than one means for adding fluid to the material being crushed or disintegrated
    • 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
    • B02C13/286—Feeding or discharge
    • B02C2013/28618—Feeding means

Definitions

  • the invention relates to a device through which air flows for shredding pourable feed material according to the preamble of patent claim 1.
  • Such devices belong to the field of mechanical process engineering and are used to comminute bulk materials such as minerals, pharmaceutical and chemical substances, food, cellulose-containing materials, plastics and the like.
  • Characteristic of such devices is an air flow generated by the rotor, the so-called own air, which takes over the transport of the feed material into and out of the shredding device and also causes the cooling of the feed material and the shredding tools.
  • the inherent air depending on its flow speed, determines the residence time of the feed material in the shredding area and thus the intensity of the shredding. Precisely maintaining the machine-specific air volume when operating generic devices is therefore of great importance in order to produce a high-quality end product.
  • the air volume of a shredding device is many times larger than the air volume of the upstream classifier. If a shredding device is operated with the optimal amount of air for it, this leads to speeds in the material flow in the area of the visible passage, at which usable feed material is undesirably separated from the material flow. To counteract this is therefore off the DE 43 16 350 C1 a gas-flowing shredding machine is known, which is preceded by a feed device with a viewing passage, with additional air being supplied in the area of the viewing passage using a blower.
  • Another such shredding device is from US1272311 known.
  • the feed material is processed under optimal process conditions both during screening and comminution. This allows for reliable and precise separation of foreign particles from the gas-solid mixture when sifting heavy goods and, when comminuting the feed material, compliance with the optimal process parameters for the respective type of comminution, such as the residence time of the feed material in the shredding zone, temperature of the feed material and the comminution tools and the like , which ultimately enables the economical production of a high-quality end product.
  • the inlet opening for supplying secondary air opens directly into the comminution chamber.
  • this allows a simple and economical construction of devices according to the invention.
  • the introduction of the secondary air far downstream of the visible passage prevents an unwanted influence of the secondary air on the processes in the visible passage, which would impair precise compliance with the separation limit.
  • the inlet openings for supplying secondary air open into the second channel section of the supply device.
  • the secondary air is distributed evenly over the circumference of the feed channel opening into the shredding device using an annular channel in order to uniformly act on the entire cross section of the feed channel.
  • the secondary air from the annular channel can either flow directly into the comminution chamber of the comminution device or indirectly via openings to the feed channel, which then leads into the comminution chamber.
  • the secondary air quantity can be regulated in an advantageous development of the invention.
  • a regulating element is advantageously provided, for example directly on the inlet opening or on the annular channel.
  • the amount of secondary air is 10% to 50% of the amount of air, preferably 15% to 35%, most preferably 25%.
  • the Fig. 1 and 2 show a comminution device 1 according to the invention in the form of an impact plate mill.
  • the shredding device 1 has a substantially cylindrical housing 2, which is firmly connected to the ground via a foot 3.
  • the housing 2 encloses a first chamber 5, in which the comminution work is carried out, and a second chamber 6, which serves to generate an air flow and to discharge the material.
  • the two chambers 5 and 6 are arranged one after the other with respect to the housing axis 4 and are connected to one another via an opening 7 concentric to the axis 4.
  • the front of the housing 2 is closed by a front wall 8 and a rear wall 9.
  • the rear wall 9 has a concentric opening in the area of the axis 4, into which a horizontal shaft bearing 10 is inserted for rotatably receiving a rotor 11.
  • the rotor 11 is composed of a shaft 12 coaxial with the axis 4, the end of which lies outside the housing 2 carries a multi-groove disk 13 for force coupling with a drive.
  • the end of the shaft 12 located in the housing 2 extends through the two chambers 5 and 6, the shaft section located in the first chamber 5 carrying a beater wheel 14.
  • the beater wheel 14 essentially consists of a hub 15, to which a baffle plate 16 and radial webs 17 are connected radially outwards.
  • comminution tools in the form of impact plates 18 are attached.
  • the effective edges of all striking plates 18 lie on a common flight circle, which is opposite an impact path 19 formed by the inner circumference of the first chamber 5 while maintaining a radial working gap.
  • the rotor 11 further comprises a fan wheel 20, which also sits on the shaft 12 in a rotationally fixed manner with a hub 21 and extends obliquely outwards into the second chamber 6 with a conical plate 22.
  • a fan wheel 20 which also sits on the shaft 12 in a rotationally fixed manner with a hub 21 and extends obliquely outwards into the second chamber 6 with a conical plate 22.
  • radially aligned air blades 23 are arranged at a uniform circumferential distance, which generate the air of the shredding device 1 during operation of the rotor 11.
  • the sufficiently comminuted material is withdrawn via a material discharge 24, which opens tangentially from the second chamber 6.
  • the front wall 8 has a central opening 25 axially opposite the shaft 12, to which a feed device 30 with an integrated heavy material classifier is connected.
  • the feed device 30 has a feed channel 31 with a chute-like first channel section 32 and an adjoining angled second channel section 33, which opens into the first chamber 5 of the shredding device 1.
  • flow guide bodies 26 are arranged on the inside, which help determine the flow path.
  • the feed channel 31 undergoes a change in direction of approximately 180° in the transition area from the first channel section 32 to the second channel section 33, which results in a reversal of direction of the material flow.
  • the supply channel 31 is provided with an opening 34 in the outer circumference of the deflection area.
  • This area thus forms a viewing passage 35, in which heavier particles in the feed material do not follow the reversal of direction of the remaining material flow due to their weight and the associated inertia, but are separated from the feed material via the opening 34 due to effective gravitational forces.
  • the longitudinal section of the second channel section 33 located directly in front of the loading opening 25 is surrounded by an annular channel 36, which is supplied with secondary air 40 via a pipe socket 37 which opens radially.
  • the flow cross section of the pipe socket 37 can be adjusted using a flap 38.
  • the side of the annular channel 36 facing the comminution device 1 is open, so that the secondary air, which is distributed evenly over the circumference of the second channel section 33 in the annular channel 36, enters axially into the first chamber 5 of the comminution device 1 and mixes there with the gas-solid mixture from the supply channel 31.
  • the gas-solid mixture 27 is fed via the first channel section 32 to the viewing passage 35 at an optimal speed and optimal mixing ratio for heavy goods sifting. Foreign bodies in the feed material are eliminated in the area of the viewing passage 35 by redirecting the material flow via the opening 34. The feed material finally reaches the first chamber 5 of the shredding device 1 via the second channel section 33 of the feed channel 31.
  • the air required for optimal comminution of the feed material is sucked in by the fan wheel 20 of the comminution device 1, the amount of air required being considerably larger than that provided by the gas-solid mixture 27.
  • the difference in air quantity is introduced as secondary air 40 into the first chamber 5 of the shredding device 1 via the pipe socket 37 and the annular channel 36. In this way, it is possible to operate both the heavy material classifier in the area of the feed device 30 and the shredding device 1 while maintaining optimal process parameters.
  • the shredding device 1 shown corresponds largely to that shown below Figures 1 and 2 described, so that to avoid repetition and using the same reference numbers, reference is made to what was said there.
  • the secondary air 40 in the shredding device 1 according to Figure 3 not directly from the annular channel 36 'into the shredding device 1, but indirectly via the second channel section 33' of the feed device 30.
  • the annular channel 36' is closed on all sides, with the second channel section 33' in the area enclosed by the annular channel 36' Openings 39 at a uniform circumferential distance, for example 2, 3 or 4 openings 39.
  • the secondary air 40 thus flows from the annular channel 36 'through the openings 39 radially in the second channel section 33' of the supply channel 31 and already mixes there with the gas-solid mixture 27.
  • Fig. 4 shows an embodiment of the invention in which the comminution device 1 is embodied by a eddy current mill.
  • the eddy current mill has a cylindrical housing 42 which encloses a comminution chamber 43.
  • the housing 42 is surrounded on the circumference by a housing jacket 44, which forms a Good discharge 45 is open at the bottom.
  • the housing 42 serves to accommodate a rotor 46, which is rotatably mounted within a shaft bearing 47 inserted centrally into the rear wall 45.
  • the shaft 48 of the rotor 46 carries, with its end lying outside the housing 42, a multi-groove disk, via which the rotor 46 is driven.
  • a beater wheel 49 On the opposite end of the shaft 48 sits a beater wheel 49, which is formed by a hub cone 50 sitting coaxially on the shaft 48 and a carrier disk 51 and a plane-parallel ring disk 52, which accommodate axially aligned striking plates 53 on their outer circumference.
  • a central baffle track 54 lies opposite the impact plates 53 while maintaining a grinding gap, to which a screen track 55 is connected on both sides in the axial direction.
  • the sieve tracks 55 are offset from the housing jacket 44 in the radial direction and in this way each form an annular channel 56 through which the sufficiently fine material is drawn off and fed to the material discharge 45.
  • the feed device 30 essentially corresponds to that below Fig. 1 to 3 described, so that what is said there applies to the same characteristics.
  • the feed device 30 therefore comprises a feed channel 31 with a first channel section 32 and a second channel section 33, which are separated from one another via a viewing passage 35.
  • the second channel section 33 adjoins the opening 57 in the front wall 44 of the device 1 according to the invention.
  • an opening 58 is provided in the second channel section 33 of the supply channel 31 immediately in front of the opening 57. Outside the second channel section 33, the opening 58 is surrounded by an air shaft 59, which is formed by the front wall 44 and the opposite second channel section of the feed device 30 as well as two plane-parallel, spaced-apart side plates 59, which connect the front wall 44 to the feed device 30 .
  • a pivoting flap 60 is inserted into the ventilation duct 59, with which the amount of secondary air 40 can be regulated.
  • the eddy current mill During operation, the eddy current mill generates an air flow (own air) with the impact plates 53 and the air blades 23 on the impact wheel 49, which represents the drive for the material flow through the mill.
  • the eddy current mill thus sucks the feed material 27 through Feeding device 30, where unsuitable feed material is separated out in the area of the viewing passage 35.
  • the screened feed material Via the opening 57, the screened feed material then reaches the impact plates 53 and the impact track 54 via a disk-shaped channel between the carrier disk 51 and the annular disk 52, from where, after sufficient comminution, it reaches the side sieve paths 55 and there via the annular channels 56 and the Good discharge 45 is passed from the eddy current mill.
  • secondary air 40 is introduced into the eddy current mill via the ventilation duct 59 and the opening 58.
  • air can be led into the comminution chamber 5 through openings 61 on the rear wall 45 of the eddy current mill in order to supply the eddy current mill with sufficient air.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Pulverization Processes (AREA)
  • Combined Means For Separation Of Solids (AREA)
  • Disintegrating Or Milling (AREA)

Claims (7)

  1. Dispositif pour le broyage de matériaux d'alimentation en vrac, comprenant un carter (2) renfermant une chambre de broyage (5) et dans lequel se trouve un rotor (11) tournant autour d'un axe (4) et disposant sur sa circonférence d'outils de broyage (18) et comprenant un système d'alimentation (30) qui transporte le matériau d'alimentation sous forme d'un mélange de gaz/particules solides dans la chambre de broyage (5), le système d'alimentation (30) ayant un passage de tamisage pneumatique (35) pour la séparation de corps étrangers du matériau d'alimentation par gravité, le dispositif (1) ayant au moins une ouverture d'entrée (25) pour l'amenée d'air secondaire débouchant en aval du passage de tamisage (35) dans le mélange de gaz/particules solides, caractérisé en ce que l'au moins une ouverture d'entrée (25) débouche directement dans la chambre de broyage (5).
  2. Dispositif selon la revendication 1, caractérisé en ce que le système d'alimentation (30) possède un canal d'alimentation (31) avec une première section de canal (32) située en amont du passage de tamisage (35) et une deuxième section de canal (33') située en aval du passage de tamisage (35) et menant à la chambre de broyage (5) et en ce que l'au moins une ouverture d'entrée (25, 39) est alimentée à partir d'un canal annulaire (36) qui entoure la deuxième section de canal (33, 33') du système d'alimentation (30).
  3. Dispositif selon la revendication 2, caractérisé en ce que, sur le côté faisant face au carter (2), le canal annulaire (36) est ouvert et adjacent à l'ouverture d'entrée (25).
  4. Dispositif selon l'une des revendications 1 à 3, caractérisé par un organe de régulation (38) pour la régulation de la quantité d'air secondaire
  5. Dispositif selon la revendication 4, caractérisé en ce que l'organe de régulation (38) est agencé sur le canal annulaire (36, 36').
  6. Dispositif selon l'une des revendications 1 à 5, caractérisé en ce que la quantité d'air secondaire s'élève à 10% à 50% de l'air brassé, de préférence à 15% à 25%, de toute préférence à 25%.
  7. Dispositif selon l'une des revendications 1 à 6, caractérisé en ce que le dispositif (1 ) présente au niveau de la paroi arrière (45) au moins une ouverture (61) pour l'amenée d'air.
EP15020150.7A 2014-09-02 2015-09-02 Dispositif de broyage de materiaux de chargement avec tri prealable Active EP2992960B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RS20240421A RS65410B1 (sr) 2014-09-02 2015-09-02 Uređaj za usitnjavanje doziranih proizvoda sa prethodnim prosejavanjem

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102014112599.1A DE102014112599A1 (de) 2014-09-02 2014-09-02 Vorrichtung zum Zerkleinern von Aufgabegut mit vorgeschalteter Sichtung

Publications (3)

Publication Number Publication Date
EP2992960A1 EP2992960A1 (fr) 2016-03-09
EP2992960C0 EP2992960C0 (fr) 2024-01-17
EP2992960B1 true EP2992960B1 (fr) 2024-01-17

Family

ID=54062606

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15020150.7A Active EP2992960B1 (fr) 2014-09-02 2015-09-02 Dispositif de broyage de materiaux de chargement avec tri prealable

Country Status (8)

Country Link
US (1) US10722897B2 (fr)
EP (1) EP2992960B1 (fr)
CA (1) CA2902531C (fr)
DE (1) DE102014112599A1 (fr)
ES (1) ES2974802T3 (fr)
HU (1) HUE066096T2 (fr)
PL (1) PL2992960T3 (fr)
RS (1) RS65410B1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015005642A1 (de) * 2015-05-05 2016-11-10 B. Maier Zerkleinerungstechnik Gmbh Messerringzerspaner
TWM589589U (zh) * 2019-08-20 2020-01-21 蕭智遠 流體機動效應之物質乾式奈米化處理設備
CN110834969B (zh) * 2019-11-12 2021-05-25 国家能源集团泰州发电有限公司 一种磨煤机石子煤自动排渣收集系统

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1272311A (en) * 1918-07-09 Williams Patent Crusher & Pulv Pneumatic separating system.
US2678169A (en) * 1951-04-17 1954-05-11 David R Tullis Impact hammer mill
ZA806469B (en) * 1979-10-30 1981-10-28 British Rema Mfg Co Ltd Pulverizing and classifying mill
US4288038A (en) * 1979-12-17 1981-09-08 Williams Robert M Waste material processing apparatus
US4848677A (en) * 1987-10-30 1989-07-18 Illabo Mining Equipment Company Comminution/recovery ore mill
US5004167A (en) * 1989-11-29 1991-04-02 Mcgee Dwight H Pneumatic grinding mill
DE4316350C1 (de) 1993-05-15 1994-11-17 Pallmann Kg Maschf Einspeiseapparat f}r gasdurchstr¦mte Zerkleinerungsmaschinen
DE19835144C2 (de) * 1998-08-04 2001-12-13 Pallmann Kg Maschf Gasdurchströmte Zerkleinerungsmaschine mit rotierendem Schlagradsystem
CA2286960C (fr) * 1998-10-20 2004-11-23 Pallmann Maschinenfabrik Gmbh & Co. Kg. Desintegrateur de type a ecoulement de gaz
RU2473390C1 (ru) * 2011-08-17 2013-01-27 Закрытое Акционерное Общество "Твин Трейдинг Компани" Мельница "трибос"

Also Published As

Publication number Publication date
PL2992960T3 (pl) 2024-05-13
EP2992960C0 (fr) 2024-01-17
CA2902531A1 (fr) 2016-03-02
ES2974802T3 (es) 2024-07-01
RS65410B1 (sr) 2024-05-31
CA2902531C (fr) 2019-01-15
US10722897B2 (en) 2020-07-28
DE102014112599A1 (de) 2016-03-03
US20160059239A1 (en) 2016-03-03
EP2992960A1 (fr) 2016-03-09
HUE066096T2 (hu) 2024-07-28

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