US3565353A - Gyratory crusher with protective feed guide elements - Google Patents
Gyratory crusher with protective feed guide elements Download PDFInfo
- Publication number
- US3565353A US3565353A US771745A US3565353DA US3565353A US 3565353 A US3565353 A US 3565353A US 771745 A US771745 A US 771745A US 3565353D A US3565353D A US 3565353DA US 3565353 A US3565353 A US 3565353A
- Authority
- US
- United States
- Prior art keywords
- further characterized
- head
- guide
- crushing cavity
- inner guide
- 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.)
- Expired - Lifetime
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Classifications
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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
- B02C2/00—Crushing or disintegrating by gyratory or cone crushers
- B02C2/005—Lining
Definitions
- This invention relates to an improvement in feed guiding means for directing particles to the crushing cavity of a crusher having a gyrated head.
- One purpose is to protect parts of the mantle or bowl liner which do not normally perform the crushing work.
- Another purpose is to direct the particles to be crushed directly into the crushing cavity for contact with the wear taking parts of the bowl liner and mantle.
- Another purpose is to provide means for protecting the holddown or positioning members used with a gyrating crusher mantle from wear.
- Another purpose is to provide means in a crusher of the type described for defining a circumferential feed passage which receives and guides particles to be reduced and delivers them substantially at the upper opening of that part of the opposed crushing members which are-actually relied upon to nip the particles to be crushed.
- Another purpose is to remove the horizontal wear component from the feed above the actual intended crushing zone by eliminating the feed from coming in direct contact of the head liner or mantle which gyrates in'a horizontal motion.
- FIG. 1 is a vertical axial section illustrating an application of the invention to a crusher of the type in which the mantle is gyrated in relation to an overhanging bowl liner;
- FIG. 2 is a similar axial section, with parts mitted, illustrating a variation of the supporting structure.
- the parts subjected to severe wear are generally made of abrasion-resistant material. Normally the areas of those parts which are exposed to the actual crushing action are thicker than the areas where the crushing action is not so severe. However, in some instances the areas that are not intended to be subjected to the severest wear actually wear out first thus shortening the useful life of the liner.
- the thickest part of the upper liner is in the lower parallel zone, and this area is intended to control the useful life of the piece; however, at times the neck which provides the support for the main crushing surface of the liner and serves to direct the feed into the crushing zone wears out first.
- the wear on the upper liner is due to (l) the passage of material over the surface and (2) by impinging or forcing the feed material against the surface of the neck as a result of thehorizontal motion and forces imparted to the feed material by the gyrating action of the head.
- My invention eliminates the wear on the neck of the upper liner and on the areas above the lower liner l by adding protective materials thus not allowing the feed material to come in direct contact with them and (2) by isolating the gyrating action of head from the feed material, thus eliminating the horizontal force components imparted to the incoming feed which contributes to the wear rate as the feed passes through that area in being directed to the intended crushing zone of the cavity.
- 1 generally indicates a crusher frame upon the upper edge of which is mounted an adjusting ring 2 in which a bowl structure 3 may be positioned for up and down adjustment.
- the parts 2 and 3 have interpenetrating screw threads 2a and 3a.
- a head, indicated at 4 may be gyrated by any suitable means, not forming part of the present invention.
- Mounted on the head 4 is a mantle 5, opposed to a bowl liner 6, the bowl liner being removably secured to the bowl 3 and being held by any suitable means, for example, by lugs or wedges 7.
- the details of the mantle and liner are not of themselves critical.
- the mantle and bowl liner may be termed lower liner and upper liner. It will be understood that the parts 5 and 6, with their opposed surfaces 50 and 6a, define a crushing cavity into which material is delivered from above. The material is crushed therein by the nip of the mantle 5 against the bowl liner 6 in response to the gyration of the head 4 about the center X. The head is shown as having an upper counterweight 8.
- a generally conically shaped guiding hopper 11 is normally employed to direct the material passing over the edge of the counterweight 8, when used as a feeding'plate, and to direct it downwardly into the crushing cavity.
- the bowl liner 6 when formed as shown, includes an upper portion 611, the primary purpose of which is to serve as a means for attaching the liner 6 to the bowl 3.
- This upper extension does not perform any crushing function, but, unless protected from the material undergoing crushing, tends to wear out more rapidly than the crushing part of the liner-the lower, thicker part.
- the present invention relates to means for protecting from wear those parts of the liner and mantle and those parts of the bowl and head which do not specifically perform a crushing function.
- An outer guide or protector 20, and an inner guide or protector 21 are positioned above the crushing cavity.
- the guides 20 and 21, between them, define a circumferential passage for the material undergoing crushing while protecting the head, bowl, mantle and bowl liner securing means from useless wear.
- the members 20 and 21 may be formed of a wear-resistant material. In some applications it is practical to use a flexible material which may be of plastic, or of a rubber substitute, with or without reinforcing fabric or fibers.
- the outer guide 20 may advantageously be secured, as at 20a, to an upper part of the hopper 11.
- the upper part of the member 20 may be made of a metal, with a depending flexible portion 20b extending downwardly adjacent the upper part 6b of the bowl liner 6. It will be understood that a wide variety of materials can be used, and a wide selection of securing means.
- overlapping ribs 22, 23 extend between the members 20 and 21 and are secured together, for example by bolts, rivets or any other suitable securing means, as at 24.
- the inner guide 21 is supported from the outer guide 20, the ribs being so formed as to present a minimum edge surface to the particles fed downwardly between the two guides or protectors.
- the lower edge of the inner guide 21 may rest on a lower part of the securing sleeve 9, or may be supported somewhat outwardly from it, so that the particles fed to the crushing cavity will have a minimum contact with the sleeve 9.
- the ribs 22 and 23 may also be formed of a flexible material or a suitable wear-resistant steel may be used.
- FIG. 2 illustrates a modified form of the invention in which there is a rotary feeder 25 mounted on an upper frame 26.
- the feeder 25 may be driven by a belt 27 connected to a sheave 28.
- the sheave 28 may be driven by a motor not illustrated, but forming a conventional part of a crushing apparatus.
- a plurality of supports 29 may extend downwardly and inwardly from the upper frame 26 to position an inner guide member or protector 30.
- the protector 30 fits over the crusher head and may include a cover 31, peripherally attached to a downwardly extending annular wall 32.
- the wall 32 is outwardly flared, or has an opening at the bottom which is larger than the cover 31. Note that the bottom edge of the wall 32 extends down beyond a major portion of the sleeve 9.
- An outer guide 33 may be fixed to a lower portion of hopper 11 and to the upper portion 6b of the bowl liner 6.
- the outer guide 33 may be formed of a flexible material or of a wear-resistant steel. In either case, it is fixed to the hopper and bowl liner by suitable securing means.
- the inner guide 30 may be formed either of a flexible material or a wearresistant metal, for example steel.
- the inner and outer guide members define a channel for the crusher feed, the width of which can be varied.
- the size of the area immediately above the crushing zone can be controlled which in turn makes it possible to regulate the throughput of the crusher.
- control of the throughput enables the operator to run the machine at the most advantageous power setting.
- the critical wear point in the crusher is the surface 60 of the bowl liner 6. This is protected in all forms of the invention by the lower end ofthe outer guides.
- the protectors disclosed herein provide protection against both types of wear.
- the inner and outer guides or protectors may be formed of many different materials. Rubber, rubber substitutes, plastic and metal may be satisfactory. In some applications combinations of different material may be used.
- the outer guide may have a metal upper section and a flexible lower sectron.
- a gyrated head crusher in which an outer normally fixed and an inner gyratable wearing part are employed to define a crushing cavity, the inner wearing part being mounted on a gyrated head, means for protecting upper portions of such wearing parts from wear, while delivering particles for reduction to the crushing cavity between said wearing parts, which includes a circumferential outer guide and a circumferential inner guide, the inner guide being located about the gyrated head, the two guides being radially opposed and defining between them a circumferential passage through which particles may be fed, for reduction, to t e crushing cavity.
- the structure of claim 1 further characterized by and including a plurality of supports connecting said inner and outer guide members.
- each guide member has a lower edge positioned adjacent, but above, the top of the crushing cavity.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Food Science & Technology (AREA)
- Crushing And Grinding (AREA)
Abstract
Description
Claims (10)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US77174568A | 1968-10-30 | 1968-10-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3565353A true US3565353A (en) | 1971-02-23 |
Family
ID=25092841
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US771745A Expired - Lifetime US3565353A (en) | 1968-10-30 | 1968-10-30 | Gyratory crusher with protective feed guide elements |
Country Status (1)
Country | Link |
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US (1) | US3565353A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5775607A (en) * | 1994-08-12 | 1998-07-07 | Wescone Crushers Pty, Ltd. | Head anti-rotational and sealing system for a gyratory crusher |
US5810269A (en) * | 1994-12-02 | 1998-09-22 | Wescone Crushers Pty. Ltd. | Gyratory crusher |
US5938133A (en) * | 1994-08-12 | 1999-08-17 | Wescone Crushers Pty Ltd | Support assembly for a gyratory crusher |
USD781937S1 (en) * | 2013-06-27 | 2017-03-21 | Sandvik Intellectual Property Ab | Crushing shell |
US20180297032A1 (en) * | 2017-04-17 | 2018-10-18 | McCloskey International Limited | Cone crusher |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1553202A (en) * | 1924-11-14 | 1925-09-08 | Symons Brothers Company | Crushing head |
US2291122A (en) * | 1940-03-21 | 1942-07-28 | Lester L Robinson | Gyratory crusher |
GB798101A (en) * | 1954-12-21 | 1958-07-16 | Wilhelm Esch | Improvements in or relating to gyratory crushers |
US2977057A (en) * | 1958-05-16 | 1961-03-28 | Fuller Co | Gyratory crusher |
-
1968
- 1968-10-30 US US771745A patent/US3565353A/en not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1553202A (en) * | 1924-11-14 | 1925-09-08 | Symons Brothers Company | Crushing head |
US2291122A (en) * | 1940-03-21 | 1942-07-28 | Lester L Robinson | Gyratory crusher |
GB798101A (en) * | 1954-12-21 | 1958-07-16 | Wilhelm Esch | Improvements in or relating to gyratory crushers |
US2977057A (en) * | 1958-05-16 | 1961-03-28 | Fuller Co | Gyratory crusher |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5775607A (en) * | 1994-08-12 | 1998-07-07 | Wescone Crushers Pty, Ltd. | Head anti-rotational and sealing system for a gyratory crusher |
US5938133A (en) * | 1994-08-12 | 1999-08-17 | Wescone Crushers Pty Ltd | Support assembly for a gyratory crusher |
US5810269A (en) * | 1994-12-02 | 1998-09-22 | Wescone Crushers Pty. Ltd. | Gyratory crusher |
USD781937S1 (en) * | 2013-06-27 | 2017-03-21 | Sandvik Intellectual Property Ab | Crushing shell |
USD781938S1 (en) * | 2013-06-27 | 2017-03-21 | Sandvik Intellectual Property Ab | Crushing shell |
US20180297032A1 (en) * | 2017-04-17 | 2018-10-18 | McCloskey International Limited | Cone crusher |
US10722895B2 (en) * | 2017-04-17 | 2020-07-28 | McCloskey International Limited | Cone crusher |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: REXNORD INC. Free format text: CHANGE OF NAME;ASSIGNOR:REX CHAIN BELT INC.;REEL/FRAME:004713/0513 Effective date: 19850905 |
|
AS | Assignment |
Owner name: NORDBERG INC., A CORP. OF DE,WISCONSIN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:REXNORD INC.;REEL/FRAME:004834/0102 Effective date: 19880126 Owner name: NORDBERG INC., 3073 S. CHASE AVE., MILWAUKEE, WI 5 Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:REXNORD INC.;REEL/FRAME:004834/0102 Effective date: 19880126 |
|
AS | Assignment |
Owner name: FIRST NATIONAL BANK OF BOSTON, THE, MASSACHUSETTS Free format text: SECURITY INTEREST;ASSIGNOR:NORDBERG, INC., A DE CORP.;REEL/FRAME:004930/0280 Effective date: 19880729 Owner name: FIRST NATIONAL BANK OF BOSTON, THE, 100 FEDERAL ST Free format text: SECURITY INTEREST;ASSIGNOR:NORDBERG, INC., A DE CORP.;REEL/FRAME:004930/0280 Effective date: 19880729 |
|
AS | Assignment |
Owner name: FIRST NATIONAL BANK OF BOSTON, THE, 100 FEDERAL ST Free format text: RELEASED BY SECURED PARTY;ASSIGNOR:NORDBERG, INC., 3073 SOUTH CHASE AVE., MILWAUKEE, WI 53207, A DE CORP.;REEL/FRAME:005060/0994 Effective date: 19890308 |