WO2001017685A1 - Rotor et taillant sur rotor - Google Patents

Rotor et taillant sur rotor Download PDF

Info

Publication number
WO2001017685A1
WO2001017685A1 PCT/IB2000/001212 IB0001212W WO0117685A1 WO 2001017685 A1 WO2001017685 A1 WO 2001017685A1 IB 0001212 W IB0001212 W IB 0001212W WO 0117685 A1 WO0117685 A1 WO 0117685A1
Authority
WO
WIPO (PCT)
Prior art keywords
tip
rotor
inserts
slots
vertical shaft
Prior art date
Application number
PCT/IB2000/001212
Other languages
English (en)
Inventor
Andrew Graham Catto
Original Assignee
Milestone Equipment (Pty) Ltd
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 Milestone Equipment (Pty) Ltd filed Critical Milestone Equipment (Pty) Ltd
Priority to AU67167/00A priority Critical patent/AU6716700A/en
Publication of WO2001017685A1 publication Critical patent/WO2001017685A1/fr

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
    • B02C13/14—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices
    • B02C13/18—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices with beaters rigidly connected to the rotor
    • B02C13/1807—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices with beaters rigidly connected to the rotor the material to be crushed being thrown against an anvil or impact plate
    • B02C13/1835—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices with beaters rigidly connected to the rotor the material to be crushed being thrown against an anvil or impact plate by means of beater or impeller elements fixed in between an upper and lower rotor disc
    • B02C13/1842—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices with beaters rigidly connected to the rotor the material to be crushed being thrown against an anvil or impact plate by means of beater or impeller elements fixed in between an upper and lower rotor disc with dead bed protected beater or impeller elements
    • 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
    • B02C13/14—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices
    • B02C13/18—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices with beaters rigidly connected to the rotor
    • B02C13/1807—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices with beaters rigidly connected to the rotor the material to be crushed being thrown against an anvil or impact plate
    • B02C13/1814—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices with beaters rigidly connected to the rotor the material to be crushed being thrown against an anvil or impact plate by means of beater or impeller elements fixed on top of a disc type rotor
    • B02C13/1828—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices with beaters rigidly connected to the rotor the material to be crushed being thrown against an anvil or impact plate by means of beater or impeller elements fixed on top of a disc type rotor with dead bed protected beater or impeller elements

Definitions

  • THIS invention relates to a rotor for a vertical shaft-type impact crusher, and in particular to a tip for such a rotor.
  • Vertical shaft-type impact crushers are used for crushing bulk material such as natural rock, for example, into smaller stones, particles or grains. These materials are typically used in aggregate, mining or industrial minerals industries.
  • Impact crushers of this type use centrifugal forces generated by high-speed rotation of the rotor to accelerate the bulk material into an impact zone in order to crush the material.
  • the material is crushed into smaller sized stones or gravel.
  • the surfaces of already crushed stones are smoothed to provide gravel or the like having a generally uniform size distribution.
  • the rotors for use in the vertical shaft-type impact crushers generally have radial wings or blades which accelerate the raw stones towards the impact zone when rotated at high speed.
  • the blades typically support tips which protect discharge ports associated with the rotor.
  • Rotors typically have three discharge ports, although rotors having five or six discharge ports are also known.
  • the tips are worn by the accelerated stones.
  • they typically include a tip insert formed from tungsten carbide or similar wear resistant material.
  • these tips are still subjected to wear and damage and need to be replaced relatively frequently.
  • a rotor for a vertical shaft-type impact crusher comprising:
  • a rotor body defining a central axis of rotation
  • each tip comprising at least one pair of opposed tip inserts formed of wear resistant material located at or adjacent the periphery of the tip, the tip inserts being oriented so that in use one of the tip inserts, the operative tip insert, is directed towards the accelerated bulk material and the other tip insert(s), the inoperative tip insert(s), is/are directed in the opposite direction,
  • the arrangement being such that when the operative insert is worn or damaged, the orientation of the tip inserts can be interchanged, thereby to increase the operational life of the tip.
  • the invention extends to a rotor tip for a vertical shaft-type impact crusher, the tip comprising:
  • a tip body arranged to be mounted on or received by a rotor of a vertical shaft-type impact crusher
  • At least one pair of opposed tip inserts located at or adjacent the periphery of the tip body and being operatively oriented so that one of the tip inserts is exposed to wear and the other tip insert(s) is/are sheltered from wear, the orientation of the tip inserts being reversible or interchangeable.
  • the invention also extends to a vertical shaft-type impact crusher incorporating the rotor and tip of the invention.
  • Figure 1 is a diagrammatic plan view of a vertical shaft-type crusher rotor of the invention
  • Figure 2 is a perspective view of a first embodiment of a rotor tip of the invention
  • Figure 3 is a plan view of the rotor tip of Figure 2;
  • Figure 4 is a perspective view of a second embodiment of a rotor tip of the invention.
  • Figure 5 is a plan view of the rotor tip of Figure 4.
  • Figure 6 is a perspective view of a third embodiment of a rotor tip of the invention.
  • Figure 7 is a plan view of the rotor tip of Figure 6.
  • a rotor 10 for a vertical shaft-type impact crusher consists of a circular rotor body 12 including three oblique wings or blades 14 supported thereon. Three associated discharge port tips 16 are supported at the respective distal ends 18 of the blades 14 adjacent the periphery 20 of the rotor body 12.
  • the blades 14 accelerate raw material introduced into the vertical shaft-type impact crusher towards an impact zone (not shown) for crushing the bulk material into smaller sized stones or gravel.
  • each discharge port tip 16 is provided with a pair of opposed tip inserts 22 and 24 formed of a wear resistant material such as tungsten carbide, for example.
  • the respective tip inserts 22, the operative tip inserts are arranged to be directed towards the centre 26 of the rotor body 12 whilst the respective tip inserts 24, the inoperative tip inserts, face the opposite direction and are sheltered from wear.
  • the discharge port tip 30 consists of a tip holder or body 32 formed of a suitable steel, either cast or fabricated, and including a pair of opposed slots 34 and 36, machined therein.
  • the inserts 38 and 40 may be brazed or welded in place, or they may be giued into the respective slots 34 and 36 using an appropriate glue or bonding agent.
  • the discharge port tip 30 is arranged on a rotor so that the tip insert 38 is directed towards the centre 26 of the rotor body 12 whilst the tip insert 40 is disposed in the opposite direction.
  • the tip insert 38 is exposed to accelerating stones or other bulk material whilst the tip 40 is sheltered therefrom.
  • the tip 30 is simply removed, rotated through 180°, and remounted or attached to the rotor body 12 or respective wings 14. In this way, the tip insert 40 is now exposed to accelerating stone or bulk material.
  • the tip insert 40 acts as a back-up to prevent damage to the discharge port or the rotor.
  • FIG. 4 and 5 there is shown a second embodiment of a discharge port tip of the invention.
  • This discharge port tip 50 consists of a tip holder or body 52, including a pair of opposed slots 54 and 56, and a pair of opposed tip inserts 58 and 60 formed of wear resistant material, once again tungsten carbide in this case, located in the slots 54 and 56, respectively.
  • the tips 58 and 60 are once again held in place by brazing, welding or using an appropriate glue or bonding agent.
  • the tip inserts 58 and 60 of discharge port tip 50 instead of presenting a relatively narrow wear surface as with the tip inserts 38 and 40 of discharge port tip 30, the tip inserts 58 and 60 of discharge port tip 50 present substantially larger wear surfaces 62 and 64, respectively, to accelerated stone and other bulk material.
  • the discharge port tip 50 may be rotated so that the tip insert 60 is now in the path of the accelerated material.
  • the tip insert 60 again provides a back-up in case of failure of the tip insert 58.
  • the tip inserts of the invention are typically held in the relevant discharge port tip by way of brazing, welding or using an appropriate glue or bonding agent.
  • an appropriate glue or bonding agent is preferred because it is generally more cost effective and, additionally, brazing or welding may lead to a change in the physical properties of the rotor body, which may not be desirable.
  • a problem with the use of glue or similar bonding agent, is that the inoperative tip insert may be prone to ejection from the tip body due to strong centrifugal forces in use, which may lead to damage to the rotor and/or injury to an operator.
  • a third embodiment of a discharge port tip 70 has a tip body 72 having opposed, tapered or dove tailed slots 74 and 76 for receiving correspondingly shaped tip inserts 78 and 80, respectively, as shown in Figures 6 and 7.
  • any appropriately shaped slot and tip insert may be used to provide a physical barrier to ejection of the tip insert from the tip body under the centrifugal forces caused by rotation of the rotor.
  • the tip inserts are formed of single layers or portions of tungsten carbide or other appropriate wear resistant material. If desirable, a second layer or portion of tungsten carbide or other material may be positioned directly behind the relevant tip insert. These additional layers or portions of tungsten carbide or the like provide additional back up should the tip inserts be broken, damaged or worn through. In such an arrangement, the inserts are reversed once both layers of the first insert are no longer effective.
  • the effective life of the tip is substantially increased. Accordingly, there is a reduction in the number of tip changes that need to take place during the operation of a vertical shaft-type impact crusher. As a result, there is an increase in the productivity of a particular vertical shaft-type impact crusher utilising the tip inserts of the invention, which is also more cost effective than conventional machines.
  • the above embodiments describe the use of a single pair of opposed tip inserts, it is possible to include more than one such pair. However, this will lead to an increase in the costs of the tip and the tip body may be worn out before all the tip inserts have been used, resulting in wasted costs.

Landscapes

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

Abstract

La présente invention concerne un rotor destiné à un broyeur à percussion pour puits vertical. Il comporte un corps de rotor rond (12), trois lames obliques (14) montées sur le corps, et trois taillants (16) d'orifices de décharge associés. La mise en rotation du corps du rotor (12) fait que les lames (14) soumettent à accélération le tout-venant introduit dans le broyeur à percussion pour puits vertical et l'envoient vers une zone de percussion de façon à réduire le tout-venant en pierres de plus petites dimensions ou en gravier. Les taillants (16) d'orifices de décharge protègent les orifices de décharge du rotor contre l'usure par les pierres soumises à accélération. Chaque taillant (16) d'orifice de décharge est pourvu d'une paire de plaquettes de taillants opposés (22 et 24) faits dans un matériau résistant à l'usure tel que le carbure de tungstène. Les plaquettes de taillants (22 et 24) amovibles permettent de prolonger la durée de vie des taillants.
PCT/IB2000/001212 1999-09-07 2000-08-31 Rotor et taillant sur rotor WO2001017685A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU67167/00A AU6716700A (en) 1999-09-07 2000-08-31 Rotor and rotor tip

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ZA995749 1999-09-07
ZA99/5749 1999-09-07

Publications (1)

Publication Number Publication Date
WO2001017685A1 true WO2001017685A1 (fr) 2001-03-15

Family

ID=25587901

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2000/001212 WO2001017685A1 (fr) 1999-09-07 2000-08-31 Rotor et taillant sur rotor

Country Status (2)

Country Link
AU (1) AU6716700A (fr)
WO (1) WO2001017685A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102228856A (zh) * 2011-04-19 2011-11-02 贵州成智重工科技有限公司 立轴式破碎机转子体的抛料头固定结构
CN102698833A (zh) * 2011-03-26 2012-10-03 朱兴良 一种装有滚动装置抛射头的冲击破碎机

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2610218A1 (fr) * 1987-01-30 1988-08-05 Alsthom Concasseur rotatif a projection
DE3833712A1 (de) * 1987-10-08 1989-04-20 Noricum Maschinenbau Handel Prallmuehle
DE19527913A1 (de) * 1994-08-04 1996-02-08 Wageneder Sbm Gmbh Kantenteil und Schlagleiste für Rotoren bei Prallmühlen

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2610218A1 (fr) * 1987-01-30 1988-08-05 Alsthom Concasseur rotatif a projection
DE3833712A1 (de) * 1987-10-08 1989-04-20 Noricum Maschinenbau Handel Prallmuehle
DE19527913A1 (de) * 1994-08-04 1996-02-08 Wageneder Sbm Gmbh Kantenteil und Schlagleiste für Rotoren bei Prallmühlen

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102698833A (zh) * 2011-03-26 2012-10-03 朱兴良 一种装有滚动装置抛射头的冲击破碎机
CN102228856A (zh) * 2011-04-19 2011-11-02 贵州成智重工科技有限公司 立轴式破碎机转子体的抛料头固定结构

Also Published As

Publication number Publication date
AU6716700A (en) 2001-04-10

Similar Documents

Publication Publication Date Title
JP2910854B2 (ja) 鉱物破砕機用の先端ホルダー
CA2346603C (fr) Assemblage rotor ameliore pour tour a reduire, et methodes de construction et d'operation dudit rotor
US5967436A (en) Production plus hammer with protective pocket
US7427042B2 (en) Wear tip for rotary mineral breaker
US20010006199A1 (en) Production plus hammer with protective pocket
IE60187B1 (en) A rotary crusher having self-protecting projection vanes
US7028936B2 (en) Wear bars for impellers
US20230055459A1 (en) Striking tool for use in a high speed comminution mill
AU679125B2 (en) Accessory for mineral breaker
WO2001017685A1 (fr) Rotor et taillant sur rotor
EP2572791B1 (fr) Support de tête d'usure pour broyeur VSI, et procédé de réduction de l'usure du rotor de broyeur VSI
ZA200202681B (en) Rotor and rotor tip.
EP0722365B1 (fr) Broyeurs a mineraux
JPH0331408Y2 (fr)
JPH0420504Y2 (fr)
JPH09131539A (ja) 遠心破砕機のロータ及び保護チップ
AU675987B2 (en) Inserts for mineral breakers
JPH0459057A (ja) 衝撃式破砕機
US3593931A (en) Rotary crusher hammers
WO2024115013A1 (fr) Plaque d'usure de cavité pour un rotor d'un broyeur à impacteur à arbre vertical (vsi)
JP2002119876A (ja) 衝撃部材固定構造
JP3261144B2 (ja) 粉砕機用衝撃部材
JPH0420508Y2 (fr)
JPS62237953A (ja) 破砕方法及び装置
GB2248410A (en) Tip holder for mineral breaker

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CR CU CZ DE DK DM DZ EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT TZ UA UG US UZ VN YU ZA ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

122 Ep: pct application non-entry in european phase
NENP Non-entry into the national phase

Ref country code: JP