EP0688603A1 - Device for separating supplying raw material to be crushed for use in a centrifugal crushing machine - Google Patents

Device for separating supplying raw material to be crushed for use in a centrifugal crushing machine Download PDF

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Publication number
EP0688603A1
EP0688603A1 EP95902277A EP95902277A EP0688603A1 EP 0688603 A1 EP0688603 A1 EP 0688603A1 EP 95902277 A EP95902277 A EP 95902277A EP 95902277 A EP95902277 A EP 95902277A EP 0688603 A1 EP0688603 A1 EP 0688603A1
Authority
EP
European Patent Office
Prior art keywords
raw material
structural members
rotor
feed
sorting device
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.)
Withdrawn
Application number
EP95902277A
Other languages
German (de)
French (fr)
Other versions
EP0688603A4 (en
Inventor
Takato Kotobuki Engineering & Manuf.Co. Ltd. Kaya
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.)
Kotobuki Engineering and Manufacturing Co Ltd
Original Assignee
Kotobuki Engineering and Manufacturing Co 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 Kotobuki Engineering and Manufacturing Co Ltd filed Critical Kotobuki Engineering and Manufacturing Co Ltd
Publication of EP0688603A1 publication Critical patent/EP0688603A1/en
Publication of EP0688603A4 publication Critical patent/EP0688603A4/en
Withdrawn legal-status Critical Current

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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
    • 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
    • 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
    • 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
    • B02C2013/1885—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 of dead bed type

Definitions

  • This invention relates to a raw material feed sorting device for a centrifugal crusher comprising a crushing chamber molded inside the housing of the crusher, an impact material set around the periphery of the crusing chamber, a rotor positioned in the center of the crushing chamber that rotates in a horizontal plane and expells raw material from its peripheral ports to the impact material, a first feed channel that supplies raw material into the rotor, and a second feed channel that supplies raw material into the space between the periphery of the rotor and the impact material, wherein the feed sorting device separates and selectively supplies raw material to the first feed channel and the second feed channel.
  • Fig. 3 illustrates a conventional centrifugal crusher a used to crush mineral ores and similar materials, as disclosed in Japanese utility model No. S63(1988)-59329.
  • raw material b to be crushed hereinafter referred to as raw material
  • a rotatable feed sorting device c shaped like an umbrella frame.
  • pieces of raw material of comparatively small diameter are fed into the rotor d
  • pieces of raw material of comparatively large diameter are fed into the space between the outer periphery of the rotor d and a dead bed, steel anvil, or other impact material e .
  • the conventional feed sorting device c comprises a top plate f , used for forming the dead bed to absorb the impact of the falling raw material, and a cluster of rod-shaped or other type of structural members g , protruding radially at a prescribed spacing, from the side face of the top plate f .
  • the ends of the cluster of structural members g slope downwardly at a fixed angle. Therefore, all members of the cluster g are arranged in virtually the same flat plane. Accordingly, when the feed sorting device c is rotated, and raw material is introduced, those pieces of raw material of comparatively small diameter that should pass through the channels h collide with the rotating structural members g and are projected outwardly into the space between the rotor d and the impact material e . In this case, a required feed volume within the rotor d cannot be obtained, and the crushing efficiency is decreased.
  • the object of this invention is to resolve these problems.
  • the invention provides a feed sorting device for use in a centrifugal crusher, which accurately sorts the raw material according to the diameter of the pieces, and suitably adjusts the feed volume into and outside of the rotor, thereby improving the crushing efficiency.
  • the device according to the invention comprises upper structural members and lower structural members, wherein the void between two adjacent structural members through which the raw material passes is not in a flat plane like that of a conventional device, but instead forms a groove-like channel of a specify depth.
  • the void between two adjacent structural members through which the raw material passes is not in a flat plane like that of a conventional device, but instead forms a groove-like channel of a specify depth.
  • raw material can be fed at a prescribed feed volume to readily adjust the respective volumes being supplied inside and outside of the rotor, and the raw material can readily and accurately be sorted by size.
  • Fig. 1 and Fig. 2 illustrate a feed sorting device 1 according to this invention which comprises a top plate 11 and upper and lower structural members 12, 13.
  • the top plate 11 is a circular or other type of plate formed from a steel member or another rigid member. A short wall is erected around the peripheral edge of the plate to form a dish. The purpose of the top plate 11 is to fill the dish with raw material falling from above to form a dead bed which will absorbe the impact of the falling material.
  • the upper structural members 12 are formed from steel or other rigid rods or bands which are attached radially at a prescribed spacing to the central top plate. One end of each rod is welded or otherwise connected to the outer peripheral surface of the top plate 11, while the other end is tilted slightly downwardly.
  • the lower structural members 13 are formed from the same materials as the upper structural members 12, with each member being attached radially to the central top plate at a prescribed spacing between each component of the upper structural members 12. However, the lower structural members 13 are tilted at a greater angle such that their ends are positioned below the ends of the upper structural members 12. For example, the upper structural members are sloping at 10°, while the lower structural members are sloping at 20°.
  • the feed sorting device 1 having a configuration of this kind, is rotatable in a horizontal plane by a suitable drive device.
  • a suitable drive device for example, a motor 2 which will support and rotate the top plate 11, as shown in Fig. 2, or any other publicly-disclosed device can be used.
  • the diameter of pieces of raw material for sorting and passage through the channels can arbitrarily be selected by adjusting the pitch between the lower and upper structural members 12 and 13.
  • the components of the lower and upper structural members 12 and 13 are alternated one by one.
  • a plurality of components of either the upper or lower members can be alternated.
  • the components slope downwardly, but the components can also lie flat or slope upwardly.
  • the void between two adjacent structural members for the falling raw material is not flat like that of a conventional device, but rather forms groove-like channels 14 of a specified depth.
  • raw material falling from above the rotating structural members 12 and 13 can be captured by the grooves or gaps.
  • raw material 3 having a comparatively small diameter falls from the grooves and into the rotor.
  • raw material 4 having a comparatively large diameter slides towards the ends of the upper and lower structural members 12 and 13, where the pieces are discharged and fed into the space between the rotor and the dead bed or other impact material.
  • the invention applies to a raw material feed sorting device for a centrifugal crusher used to crush mineral ores or other raw material.

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

Abstract

A device for separating and supplying raw material to be crushed for use in a centrifugal crushing machine wherein rod-like or belt-like constituent members are disposed in a radial fashion so as to make an integral structure which can rotate in a horizontal direction, every other or every several constituent members being placed lower than the other members.

Description

    Field of the invention
  • This invention relates to a raw material feed sorting device for a centrifugal crusher comprising a crushing chamber molded inside the housing of the crusher, an impact material set around the periphery of the crusing chamber, a rotor positioned in the center of the crushing chamber that rotates in a horizontal plane and expells raw material from its peripheral ports to the impact material, a first feed channel that supplies raw material into the rotor, and a second feed channel that supplies raw material into the space between the periphery of the rotor and the impact material, wherein the feed sorting device separates and selectively supplies raw material to the first feed channel and the second feed channel.
    • Prior art
  • Fig. 3 illustrates a conventional centrifugal crusher a used to crush mineral ores and similar materials, as disclosed in Japanese utility model No. S63(1988)-59329. In that crusher, raw material b to be crushed (hereinafter referred to as raw material) is sorted by a rotatable feed sorting device c shaped like an umbrella frame. In that crusher, pieces of raw material of comparatively small diameter are fed into the rotor d, while pieces of raw material of comparatively large diameter are fed into the space between the outer periphery of the rotor d and a dead bed, steel anvil, or other impact material e. Thereafter, the smaller pieces of raw material, being expelled from inside the rotor d rotating at high speed, collide with the larger pieces being fed between the outer periphery of the rotor d and the impact material e, then further impact with the impact material e, effectively crushing the raw material.
  • The conventional feed sorting device c comprises a top plate f, used for forming the dead bed to absorb the impact of the falling raw material, and a cluster of rod-shaped or other type of structural members g, protruding radially at a prescribed spacing, from the side face of the top plate f. The ends of the cluster of structural members g slope downwardly at a fixed angle. Therefore, all members of the cluster g are arranged in virtually the same flat plane. Accordingly, when the feed sorting device c is rotated, and raw material is introduced, those pieces of raw material of comparatively small diameter that should pass through the channels h collide with the rotating structural members g and are projected outwardly into the space between the rotor d and the impact material e. In this case, a required feed volume within the rotor d cannot be obtained, and the crushing efficiency is decreased.
  • The object of this invention is to resolve these problems. Hence, the invention provides a feed sorting device for use in a centrifugal crusher, which accurately sorts the raw material according to the diameter of the pieces, and suitably adjusts the feed volume into and outside of the rotor, thereby improving the crushing efficiency.
    • Disclosure of the invention
  • The device according to the invention comprises upper structural members and lower structural members, wherein the void between two adjacent structural members through which the raw material passes is not in a flat plane like that of a conventional device, but instead forms a groove-like channel of a specify depth. Hence, raw material falling from above the rotating upper and lower structural members can be captured by such grooves, and while sliding towards the ends of the structural members, can accurately be sorted and fed into the appropriate section of the crushing chamber. The volume of raw material being fed inside and outside of the rotor is therefore maximized for better crushing efficiency.
  • Moreover, raw material can be fed at a prescribed feed volume to readily adjust the respective volumes being supplied inside and outside of the rotor, and the raw material can readily and accurately be sorted by size.
    • Brief explanation of the drawings
    • Fig. 1
    is a perspective diagram of the raw material feed sorting device of the present invention.
    Fig. 2
    is a cross section diagram of the raw material feed sorting device of the present invention.
    Fig. 3
    is an explanatory diagram of the overall configuration of a conventional crusher.
    Fig. 4
    is an explanatory diagram of a conventional raw material feed sorting device.
    Detailed description of preferred embodiments
  • An example of the present invention is explained below, with reference to the accompanying drawings.
  • Fig. 1 and Fig. 2 illustrate a feed sorting device 1 according to this invention which comprises a top plate 11 and upper and lower structural members 12, 13.
  • The top plate 11 is a circular or other type of plate formed from a steel member or another rigid member. A short wall is erected around the peripheral edge of the plate to form a dish. The purpose of the top plate 11 is to fill the dish with raw material falling from above to form a dead bed which will absorbe the impact of the falling material. The upper structural members 12 are formed from steel or other rigid rods or bands which are attached radially at a prescribed spacing to the central top plate. One end of each rod is welded or otherwise connected to the outer peripheral surface of the top plate 11, while the other end is tilted slightly downwardly.
  • The lower structural members 13 are formed from the same materials as the upper structural members 12, with each member being attached radially to the central top plate at a prescribed spacing between each component of the upper structural members 12. However, the lower structural members 13 are tilted at a greater angle such that their ends are positioned below the ends of the upper structural members 12. For example, the upper structural members are sloping at 10°, while the lower structural members are sloping at 20°.
  • The feed sorting device 1, having a configuration of this kind, is rotatable in a horizontal plane by a suitable drive device. For example, a motor 2 which will support and rotate the top plate 11, as shown in Fig. 2, or any other publicly-disclosed device can be used.
  • The diameter of pieces of raw material for sorting and passage through the channels can arbitrarily be selected by adjusting the pitch between the lower and upper structural members 12 and 13. Also, as shown in Fig. 1, the components of the lower and upper structural members 12 and 13 are alternated one by one. However, a plurality of components of either the upper or lower members can be alternated. Moreover, in the configurations of Fig. 1 and Fig. 2, the components slope downwardly, but the components can also lie flat or slope upwardly.
  • Since the lower structural members 12 are positioned below the upper structural members 13, the void between two adjacent structural members for the falling raw material is not flat like that of a conventional device, but rather forms groove-like channels 14 of a specified depth. Thus, as shown in Fig. 2, raw material falling from above the rotating structural members 12 and 13 can be captured by the grooves or gaps. Hence, while sliding towards the ends, raw material 3 having a comparatively small diameter falls from the grooves and into the rotor. On the other hand, raw material 4 having a comparatively large diameter slides towards the ends of the upper and lower structural members 12 and 13, where the pieces are discharged and fed into the space between the rotor and the dead bed or other impact material.
    • Industrial field of application
  • As described above, the invention applies to a raw material feed sorting device for a centrifugal crusher used to crush mineral ores or other raw material.

Claims (2)

  1. A raw material feed sorting device for a centrifugal crusher, comprising
    - a crushing chamber molded inside the housing of the crusher,
    - an impact material set around the periphery of the crushing chamber,
    - a rotor positioned in the center of the crushing chamber that rotates in a horizontal plane and expels raw material from its peripheral ports to the impact material,
    - a first feed channel that supplies raw material into the rotor, and
    - a second feed channel that supplies raw material between the periphery of the rotor and the impact material;
    wherein the feed sorting device separates and selectively supplies raw material by size to the first feed channel and the second feed channel, and for this purpose, a cluster of band-shaped or rod-shaped structural members are arranged radially to form an integral unit that can rotate in the horizontal plane,
    and wherein a portion of the structural members is positioned below and alternatedly with every other or alternatedly with a prescribed plurality of the other structural members.
  2. The raw material feed sorting device for a centrifugal crusher as claimed in claim 1,
    in which a dish-shaped top plate is molded in the center of the cluster of the structural members.
EP95902277A 1994-01-07 1994-11-30 Device for separating supplying raw material to be crushed for use in a centrifugal crushing machine Withdrawn EP0688603A4 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP381/94U 1994-01-07
JP1994000381U JP3000058U (en) 1994-01-07 1994-01-07 Sorting and feeding device for crushing raw materials used in centrifugal crusher
PCT/JP1994/002012 WO1995018677A1 (en) 1994-01-07 1994-11-30 Device for separating supplying raw material to be crushed for use in a centrifugal crushing machine

Publications (2)

Publication Number Publication Date
EP0688603A1 true EP0688603A1 (en) 1995-12-27
EP0688603A4 EP0688603A4 (en) 1997-04-16

Family

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Application Number Title Priority Date Filing Date
EP95902277A Withdrawn EP0688603A4 (en) 1994-01-07 1994-11-30 Device for separating supplying raw material to be crushed for use in a centrifugal crushing machine

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EP (1) EP0688603A4 (en)
JP (1) JP3000058U (en)
AU (1) AU1119695A (en)
WO (1) WO1995018677A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2218752B1 (en) 2006-04-07 2013-06-12 Dow Global Technologies LLC Polyolefin compositions and articles made therefrom
CN113856827B (en) * 2021-09-27 2023-07-14 湖南佳益生物饲料有限公司 Crusher for feed processing
CN116851124B (en) * 2023-05-29 2024-06-21 苏州市建筑材料再生资源利用有限公司 Recycled concrete aggregate preparation facilities

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3309932A1 (en) * 1983-03-19 1984-09-20 Cyrus GmbH Schwingtechnik, 4350 Recklinghausen Screening device, especially for separating foreign bodies from granular feed components
US5145118A (en) * 1990-08-29 1992-09-08 Canada Larry D Centrifugal impactor for crushing rocks
JPH0510924Y2 (en) * 1988-05-23 1993-03-17
JPH0510923Y2 (en) * 1988-05-06 1993-03-17

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59142878A (en) * 1983-02-03 1984-08-16 極東開発工業株式会社 Sorting machine
JPS59123584U (en) * 1983-02-03 1984-08-20 極東開発工業株式会社 Sorting machine
JP2655390B2 (en) * 1994-01-07 1997-09-17 コトブキ技研工業株式会社 Sorting and feeding equipment for crushed raw materials used in centrifugal crushers

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3309932A1 (en) * 1983-03-19 1984-09-20 Cyrus GmbH Schwingtechnik, 4350 Recklinghausen Screening device, especially for separating foreign bodies from granular feed components
JPH0510923Y2 (en) * 1988-05-06 1993-03-17
JPH0510924Y2 (en) * 1988-05-23 1993-03-17
US5145118A (en) * 1990-08-29 1992-09-08 Canada Larry D Centrifugal impactor for crushing rocks

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO9518677A1 *

Also Published As

Publication number Publication date
WO1995018677A1 (en) 1995-07-13
JP3000058U (en) 1994-07-26
AU1119695A (en) 1995-08-01
EP0688603A4 (en) 1997-04-16

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