[go: up one dir, main page]

EP0207105A1 - Broyeur a marteaux. - Google Patents

Broyeur a marteaux.

Info

Publication number
EP0207105A1
EP0207105A1 EP86900046A EP86900046A EP0207105A1 EP 0207105 A1 EP0207105 A1 EP 0207105A1 EP 86900046 A EP86900046 A EP 86900046A EP 86900046 A EP86900046 A EP 86900046A EP 0207105 A1 EP0207105 A1 EP 0207105A1
Authority
EP
European Patent Office
Prior art keywords
hammer mill
outlet
grinding chamber
inlet
metering
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
EP86900046A
Other languages
German (de)
English (en)
Other versions
EP0207105B1 (fr
Inventor
Richard Schultz
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.)
Individual
Original Assignee
Individual
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
Priority claimed from DE19853500032 external-priority patent/DE3500032A1/de
Priority claimed from CH552185A external-priority patent/CH668197A5/de
Application filed by Individual filed Critical Individual
Publication of EP0207105A1 publication Critical patent/EP0207105A1/fr
Application granted granted Critical
Publication of EP0207105B1 publication Critical patent/EP0207105B1/fr
Expired legal-status Critical Current

Links

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
    • B02C13/286—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
    • B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
    • B02C13/26—Details
    • B02C13/286—Feeding or discharge
    • B02C2013/28618—Feeding means
    • B02C2013/28654—Feeding means of screw type
    • 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
    • B02C2013/2869—Arrangements of feed and discharge means in relation to each other
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S241/00—Solid material comminution or disintegration
    • Y10S241/604—Plural inlets for diverse solid materials

Definitions

  • the invention relates to a hammer mill with a grinding chamber, a rotor with hammers or beaters for comminuting coarse material and a device for feeding in coarse material and discharging the comminuted product.
  • the rotor in the grinding chamber generally rotates about a horizontally arranged axis, the feed taking place in the upper region of the grinding chamber.
  • a baffle formed as a sieve jacket is provided at least in the lower part of the grinding chamber, through which the comminuted product enters and is discharged from a collecting space surrounding the grinding chamber or the sieve jacket.
  • the invention is based on the knowledge that, in a hammer mill, the material fed into the grinding chamber is comminuted after a very short grinding path.
  • the feed material is hit by the hammers for the first time, there is usually extensive comminution, whereupon the comminuted product unnecessarily rotates with the rotor until it can exit through the screen jacket.
  • the hammer mill according to the invention is advantageously provided with a plurality of inlets and outlets evenly distributed over the circumference of the grinding chamber in order to be able to ensure uniform rotor loading, even when the rotor is reversed in the direction of rotation for the purpose of using the hammers or beaters on both sides.
  • the inlet channels are preferably arranged in such a way that they feed the coarse material to the grinding chamber in a plurality of horizontal planes, in order to also allow full use of the rotor height. Thanks to the horizontal arrangement of the grinding chamber according to the invention with a vertical rotor axis, it is possible to arrange a large number of inlet and outlet channels distributed over the circumference of the grinding chamber in a simple and particularly advantageous manner, so that the material fed from above can be easily fed radially into the grinding chamber can.
  • each inlet channel is assigned an outlet channel, which is arranged at a relatively short distance behind this inlet channel, the material fed in via each inlet channel can be crushed as a comminuted product immediately after it has been crushed when the hammers or beaters hit it, directly via the outlet corresponding to the outlet that follows Outlet channel are discharged from the grinding chamber.
  • the shredded product is no longer dragged along unnecessarily in the grinding chamber as before.
  • the hammer mill is divided in the circumferential direction into a more or less large number of mill segments arranged one behind the other, each of which is limited by an inlet with the corresponding inlet channel and by an outlet arranged at a relatively short distance next to the corresponding outlet channel, whereby the rotor carrying the hammers or beaters is assigned to all these mill segments together.
  • outlets provided according to the invention can be completely free, or optionally covered with sieves of different hole sizes, in order to allow the size of the product to be preselected.
  • Two or more such screens can be arranged very simply on a common slide which can be moved in order to either leave the corresponding outlet completely free or alternatively to cover it with one of the screens.
  • FIG. 1 is a schematic front view of the hammer mill.
  • Figure 2 is a schematic top view of this hammer mill.
  • Figure 3 shows schematically two outlet screens.
  • FIG. 4 is a schematic front view of a metering device for the material to be comminuted.
  • FIG. 5 is a schematic view of the underside of the metering device according to FIG. 4.
  • a rotor 3 is mounted in a grinding chamber 1 on an essentially vertically oriented axis 2, which is driven by an electric motor 11.
  • the rotor 3 is provided in a known manner and not shown here with hammers or beaters, the outer ends of which stroke the impact circle 3 shown in dashed lines in FIG. 2.
  • three inlet channels 4 are provided on the circumference of the grinding chamber 1 and are connected to the grinding chamber 1 via three corresponding inlets 7a. The regrind fed via the inlet channels 4 is thus fed radially downward on the circumference of the milling chamber 1.
  • Each inlet channel 4 is provided with guide elements 10 which radially feed the coarse material to the grinding chamber 1 or the rotor 3 in several horizontal planes.
  • each inlet channel 4 is provided in the arrangement shown in FIGS. 1 and 2. It is also possible to use other suitable guide elements which, for example, can be raised to feed the material to be ground radially into the grinding chamber 1 at different levels.
  • Each inlet channel 4 is also assigned a corresponding outlet channel 5 on the circumference of the grinding chamber, which is arranged at a short distance in the grinding direction, ie in the direction of rotation of the rotor 3, along the grinding path behind the respective inlet channel 4.
  • These outlet channels 5 are each connected to the grinding chamber 1 via an outlet 7b.
  • the inlet channels can be arranged in any other suitable way in order to feed the coarse material supplied from above radially into the corresponding mill segment on the circumference of the grinding chamber 1.
  • each outlet channel 5 can optionally be covered with a sieve of a certain hole size in order to adjust the size of the shredded product discharged via this outlet 7b.
  • Sieves of different hole sizes are advantageously arranged on a common slide 9, as is shown schematically in FIG. 3, for example.
  • the screens arranged on the slide 9 in this case comprise two screen surfaces 8a and 8b of different hole sizes and a free through opening 8c arranged between them. If the slide 9 is displaced in the vertical direction relative to the corresponding outlet 7b in the manner shown schematically in FIG.
  • the free through opening 8c can thus be located at the outlet 7b, or the screen surfaces 8a or 8b can optionally be in this outlet 7b can be used when the size of the shredded product to be dispensed is to be selected.
  • the arrangement of the hammer mill described and shown schematically in the drawing here comprises, for example and in order to simplify the drawing, three inlet channels 4 with three associated outlet channels 5, which are arranged alternately and are distributed uniformly over the circumference of the grinding chamber 1.
  • the number of feed channels and the corresponding Auslauf ⁇ channels can be selected depending on 'requirement, however, and the respectively desired grinding operation to be adjusted.
  • the hammer mill according to the invention is each divided into the largest possible number of mill segments or comminution zones, the distance between the inlet and outlet channels 4 and 5 being kept as short as possible and being practically zero.
  • the grinding chamber diameter of which is 1500 mm the outlet channel 5 assigned to each inlet channel 4 follows at a distance of only 50 mm, the width of each inlet 7a having an arc length of 100 mm and of each outlet 7b having an Arc length of 200 mm were chosen. It follows that only about 300 to 350 mm of the grinding chamber circumference is required for each mill segment which has an inlet channel 4 with an inlet 7a, a jacket segment surface 6 and an associated outlet channel 5 with an outlet 7b.
  • the hammer mill can therefore be equipped with sixteen inlet channels 4 and sixteen outlet channels 5 on the circumference of the grinding chamber and can thus be divided into sixteen mill segments.
  • Examples of numbers for the hole sizes on the outlet slide 9 are 1.5 mm for the screen area 8a and 3 mm for the screen area 8b.
  • a third sieve with a very large hole size of z. B. 20 mm or more can be provided.
  • the coarse material which is fed in vertically from above and fed radially into the grinding chamber 1 via an inlet channel 4, is hit and largely crushed by the hammers or beaters of the rotor 3 passing the inlet 7a, after which it is immediately crushed to the Outlet 7b of the associated outlet channel 5 arrives. Since the product produced in a certain mill segment has already been largely comminuted, it can almost completely pass through the free opening 8c or through a sieve 8a or 8b into the assigned outlet channel 5, so that the comminuted product is discharged and no further is dragged through the mill. As a result of the vertical feed and radial feed of the coarse material into the grinding chamber 1, the material is deflected by 90 in a horizontal movement path by the hammers or beaters of the rotor, which further promotes the comminution effect.
  • the comminuted product discharged via the outlet channels 5 of the hammer mill according to the invention can be fed to a suitable sieve device, it being possible to return sieve residues for the purpose of further comminution.
  • the relatively simple arrangement of the hammer mill according to the invention offers various advantages, the following being mentioned: a considerable reduction in the power requirement for the comminution, a reduction in the wear costs and less heating of the material and a lower moisture removal during the comminution.
  • the dosing device shown schematically in FIGS. 4 and 5 is particularly suitable for the continuous feeding of material to be comminuted into a hammer mill according to the invention with a plurality of feed channels, each feed channel of the hammer mill having a corresponding dosing screw of a dosing device of the one in FIGS 5 shown type is assigned.
  • the metering screws 23 are arranged around the vertical axis 20 and extend from the openings 24 and 25 arranged under the cells 21 and 22, or from the corresponding first and second screw entries, to their outlet pipe 26 radially outwards.
  • the speed of the metering screws is controlled in a known manner by a control device, not shown, as a function of the required load on the hammer mill, so that the mill fed by this metering device with goods to be comminuted is operated with a uniform load.
  • the two cells 21 and 22 are used to hold two different goods, for example in two different grain sizes, which are sequentially gripped by the screws 23 via the openings 24 and 25 and fed to the mill.
  • a first item located in the central cell 21 is detected with priority by the metering screws 23 via the inner openings 24 or the corresponding first screw entries and fed to the mill, a second item being borrowed continuously from the outer annular cell 22 via the outer ones Openings 25 or the corresponding second screw entries through the screws 23 are added in sufficient quantity to operate the mill with the desired load.
  • outlet channels 5 of the hammer mill can be connected to the central cell via a screening device (not shown)
  • said outer annular cell is provided 22 with fresh coarse material '.
  • the first good located in the central cell 21 is guaranteed absolute priority over the second good located in the outer annular cell 22, since this first good in the central cell 21 is inevitably via the inner openings 24 corresponding first screw entries through the metering screws 23 are first detected and only then is the second material from the outer annular cell
  • Such an arrangement of the metering device is also possible with other controllable funding, eg. b. possible with chain conveyors, vibratory conveyors, etc., while the advantages explained above of the automatically controlled priority of dosing different goods are retained thanks to the very simple coaxial arrangement of the cells, which, as described, interact with several radially arranged dosing means via corresponding openings.
  • the number of coaxial cells and the associated metering devices can be chosen more or less freely as required.
  • the hammer mill according to the invention and the metering device can be used for different comminution work and bulk goods. They are particularly well suited for compound feed preparation, whereby an interaction between the hammer mill with several inlet channels and the metering device for the continuous metering of different goods by means of several metering devices offers special advantages.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Pulverization Processes (AREA)

Abstract

Le broyeur à marteaux comporte une chambre de broyage (1) disposée horizontalement à la périphérie de laquelle sont répartis plusieurs canaux d'alimentation (4) munis d'un orifice d'entrée (7a) pour le produit brut à broyer. A chaque canal d'alimentation (4) correspond un canal de sortie (5) situé à côté du canal d'alimentation et muni d'un orifice de sortie (7b) pour le produit concassé. Les entrées (7a) et les sorties (7b) sont réparties alternativement et régulièrement à la périphérie de la chambre de broyage; celle-ci est ainsi subdivisée à sa périphérie en un nombre correspondant de segments de broyeur qui sont chacun délimités par un canal d'alimentation (4) avec un orifice d'entrée (7a) et un canal de sortie (5) correspondant avec un orifice de sortie (7b). Une installation de dosage spéciale avec des compartiments coaxiaux (21, 22) et plusieurs vis de dosage (23) est prévue pour alimenter en continu les canaux d'alimentation (4) avec des produits bruts différents à partir des compartiments correspondants (21, 22). Le broyeur ainsi que l'installation de dosage conviennent pour différentes matières en vrac et différents broyages et offrent des avantages particuliers pour la préparation de mélanges de fourrages.
EP86900046A 1985-01-02 1985-12-30 Broyeur a marteaux Expired EP0207105B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19853500032 DE3500032A1 (de) 1985-01-02 1985-01-02 Hammermuehle
DE3500032 1985-01-02
CH5521/85 1985-12-23
CH552185A CH668197A5 (de) 1985-12-23 1985-12-23 Dosiervorrichtung.

Publications (2)

Publication Number Publication Date
EP0207105A1 true EP0207105A1 (fr) 1987-01-07
EP0207105B1 EP0207105B1 (fr) 1988-10-19

Family

ID=25697900

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86900046A Expired EP0207105B1 (fr) 1985-01-02 1985-12-30 Broyeur a marteaux

Country Status (8)

Country Link
US (1) US4690339A (fr)
EP (1) EP0207105B1 (fr)
JP (1) JPS62501340A (fr)
CA (1) CA1251427A (fr)
DE (1) DE3565634D1 (fr)
DK (1) DK418886A (fr)
FI (1) FI863544A7 (fr)
WO (1) WO1986003990A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5899395A (en) * 1997-06-09 1999-05-04 Dextrite, Inc. Multipurpose fluorescent lamp crusher
NL1008691C2 (nl) * 1998-03-25 1999-09-28 Holding Dinnissen B V Hamermolen.

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1072063B (de) * 1962-02-08 Mmeralchemie Werner &. Co , Duderstadt Schlägermühle
US1711464A (en) * 1927-02-10 1929-04-30 Ruprecht Louis Grinding machine
GB462588A (en) * 1935-09-13 1937-03-11 Nordberg Manufacturing Co Impact crushers
US2155697A (en) * 1936-10-02 1939-04-25 Albert Robert Wilson Apparatus for pulverizing minerals and other materials
FR1041622A (fr) * 1950-02-22 1953-10-26 Perfectionnements apportés aux moulins broyeurs et à leur procédé d'utilisation
DE2423669A1 (de) * 1974-05-15 1975-11-20 Albin Fehrenbach Muellzerkleinerer
GB2044126B (en) * 1979-03-15 1983-04-20 Air Prod & Chem Method and apparatus for cryogenic grinding
SU1072891A1 (ru) * 1982-11-30 1984-02-15 Ивановский сельскохозяйственный институт Центробежна мельница

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8603990A1 *

Also Published As

Publication number Publication date
FI863544L (fi) 1986-09-02
EP0207105B1 (fr) 1988-10-19
DK418886D0 (da) 1986-09-02
JPS62501340A (ja) 1987-06-04
FI863544A0 (fi) 1986-09-02
US4690339A (en) 1987-09-01
DE3565634D1 (en) 1988-11-24
WO1986003990A1 (fr) 1986-07-17
DK418886A (da) 1986-09-02
CA1251427A (fr) 1989-03-21
FI863544A7 (fi) 1986-09-02

Similar Documents

Publication Publication Date Title
EP0460490B1 (fr) Séparateur pneumatique
DE3311433A1 (de) Klassieren von mahlgut von vertikalen rollenmuehlen
DE3341429A1 (de) Schlaegermuehle
DE69904013T2 (de) Verfahren und vorrichtung zur zerkleinerung von abfall, auch für nicht dafür vorgesehenen abfall
WO1990007378A1 (fr) Moulin agitateur a dispositif de separation dans une cage rotative
DE69110258T2 (de) Rohrmühle.
DE4005323A1 (de) Verfahren und mahlanlage zur zweistufigen zerkleinerung von sproedem mahlgut
EP3541523B1 (fr) Broyeur
EP3017870A1 (fr) Dispositif de préparation de matériaux de biomasse en particulier
DE60026867T2 (de) Walzenmühle zum mahlen von körnigem material insbesondere getreide
EP0207105B1 (fr) Broyeur a marteaux
EP0978317B1 (fr) Appareil broyeur balayé par un courant d'air comportant un rotor à impact rotatif
DE3230542A1 (de) Zerkleinerungsvorrichtung
DE3138259C2 (fr)
DE4316147A1 (de) Maschine zum Zerkleinern fester Abfälle
DE102011117418B4 (de) Labyrinthmühle
EP1904236A1 (fr) Dispositif de comminution comportant plusieurs arbres rotatifs ou oscillants, essentiellement paralleles, entraines par moteur
DE1253562B (de) Prall- und Schaelmuehle mit mindestens zwei um eine lotrechte Achse umlaufenden Schleuderraedern
DE2040663A1 (de) Muehle
CH343760A (de) Kolloidmühle
DE701483C (de) Zerkleinerungsvorrichtung
CH689080A5 (de) Verwendung eines Granulators und entsprechend umgeruesteter Granulator.
EP0913189A2 (fr) Mélangeur-broyeur et méthode d'utilisation de ce dispositif pour des matériaux déchets, particulièrement pour des matériaux déchets biodégradables
DE3123484C2 (de) Zerkleinerungsvorrichtung für faseriges Gut
DE3932152C2 (fr)

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19860829

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): CH DE FR GB IT LI NL SE

17Q First examination report despatched

Effective date: 19880217

ITCL It: translation for ep claims filed

Representative=s name: UFFICIO TECNICO ING. A. MANNUCCI

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): CH DE FR GB IT LI NL SE

REF Corresponds to:

Ref document number: 3565634

Country of ref document: DE

Date of ref document: 19881124

ITF It: translation for a ep patent filed
GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19901219

Year of fee payment: 6

Ref country code: GB

Payment date: 19901219

Year of fee payment: 6

ITTA It: last paid annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19901231

Year of fee payment: 6

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19911230

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19911231

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19920701

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
GBPC Gb: european patent ceased through non-payment of renewal fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19931014

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19940119

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19940222

Year of fee payment: 9

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19941231

Ref country code: CH

Effective date: 19941231

EUG Se: european patent has lapsed

Ref document number: 86900046.3

Effective date: 19920704

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19950831

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19950901

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST