Patent GB2198060A successfully refreshed from Google Patents.
GB2198060A
Expired / Lapsed
GB
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An impact mill for crushing hard material
Assignee: WAGENEDER SBM GmbH
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Filing: 1987-10-23
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Granted: —
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Expires: 2007-10-23
Abstract
Abstract For crushing rock or the like, use is made of an impact mill which contains in an approximately annular housing a rotor (2) having an axial entry orifice. The rotor (2) has a baseplate with a central impact plate (7), a cover plate with a central recess and, between the baseplate and cover plate, blades (11) which form ejection orifices (16) and which are each equipped with a pocket (17) for receiving crushed material. The ejection side of each pocket (17) is equipped with an exchangeable wearing part which is fastened to the blade (11) and which is composed of a carrier body (12) and of a carbide strip (13). The inner face of the pocket (17) on the ejection side is formed by a face (20) of the carbide strip (13) and extends approximately perpendicularly relative to a contact plane (B) of the edges of the pocket (17). The carbide strip (13) has a wearing face (21) in the form of an arc of a circle and projects with the outer edge beyond the rotor circumference. The inner face of the carrier body (12) and the inner face (20) of the carbide strip (13) form an angle of 95 DEG to 110 DEG and extend symmetrically relative to a radius of the rotor (2). <IMAGE>
Inventors
- 👤 Guenter Mueller
Bibliographic Details
Application Number
—
Jurisdiction
GB
Data Source
google_patents
Last Synchronized
2026-11-03 17:31
CPC Classifications
B; B02; B02C; B02C13/00; B02C13/14; B02C13/18; B02C13/1807; B02C13/1835; B02C13/1842
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
244 words
An impact mill for crushing hard material such as stone, including a substantially annular housing, a rotor with an axial intake opening for material to be crushed, which rotor is rotatably mounted in the housing to rotate about a substantially vertical axis, forms an annular gap between the rotor periphery and the housing and has a bottom plate with a central impact plate member, a cover plate with a central aperture for receiving material to be crushed and blades forming ejection openings between the bottom and cover plates, with sides of the blades which face towards the axis of the rotor each having a pocket for receiving crushed material, wherein the ejection side of the pocket has a replaceable wear member formed by a carrier body portion and a hard metal or metal carbide bar portion as marginal edge reinforcement, which bar portion forms a wear surface which is set back in the ejection direction and whose surface bounding part of the material-receiving pocket extends at an angle to a contact plane (B) of the marginal edges of the material-receiving pocket and whose outer edge projects beyond the periphery of the rotor, wherein the surface of the bar portion bounding part of the material-receiving pocket forms the inner surface of the material-receiving pocket and extends substantially perpendicularly to the contact plane (B) of the marginal edges of the material-receiving pocket and wherein the set-back wear surface of the bar portion is convexly arcuately curved.
Claim 2
Dependent Claim
244 words
An impact mill for crushing hard material such as stone, including a substantially annular housing, a rotor with an axial intake opening for material to be crushed, which rotor is rotatably mounted in the housing to rotate about a substantially vertical axis, forms an annular gap between the rotor periphery and the housing and has a bottom plate with a central impact plate member, a cover plate with a central aperture for receiving material to be crushed and blades forming ejection openings between the bottom and cover plates, with sides of the blades which face towards the axis of the rotor each having a pocket for receiving crushed material, wherein the ejection side of the pocket has a replaceable wear member formed by a carrier body portion and a hard metal or metal carbide bar portion as marginal edge reinforcement, which bar portion forms a wear surface which is set back in the ejection direction and whose surface bounding part of the material-receiving pocket extends at an angle to a contact plane (B) of the marginal edges of the material-receiving pocket and whose outer edge projects beyond the periphery of the rotor, wherein the surface of the bar portion bounding part of the material-receiving pocket forms the inner surface of the material-receiving pocket and extends substantially perpendicularly to the contact plane (B) of the marginal edges of the material-receiving pocket and wherein the set-back wear surface of the bar portion is convexly arcuately curved.
Claim 3
Dependent Claim
35 words
An impact mill according to claim 1, wherein the bar portion is made of an alloy with a tungsten carbide content greater than 91% with the balance, apart from impurities and incidental constituents, being cobalt.
Claim 4
Dependent Claim
42 words
An impact mill according to claim 1 or claim 2, wherein the surface of the bar portion forming the inner surface of the material-receiving pocket extends at angle (9) to the contact plane (B) in the range of from 75 to 1050.
Claim 5
Dependent Claim
25 words
An impact mill according to anyone of claims 1 to 3, wherein the setback arcuately curved wear surface extends for a quarter of a circle.
Claim 6
Dependent Claim
40 words
An impact mill according to anyone of claims 1 to 4, wherein the inner surface of the bar portion, which lies in the material receiving pocket, extends at an angle (l) ) of about 950 to the contact plane (B).
Claim 7
Dependent Claim
41 words
An impact mill according to anyone of claims 1 to 5, wherein the bar portion is attached to the carrier body portion at a mounting surface which extends at an angle of 1050 to the inner surface of the material-receiving pocket.
Claim 8
Dependent Claim
22 words
An impact mill according to claim 6, wherein the edge between the set back wear surface and the mounting surface is rounded.
Claim 9
Dependent Claim
35 words
An impact mill according to anyone of claims 1 to 7, wherein the carrier body portion is substantially plate-shaped in form and has a bevelled support surface for the mounting surface of the bar portion.
Claim 10
Dependent Claim
21 words
An impact material for crushing hard material such as stone, substantially as hereinbefore described and as illustrated in the accompanying drawings.
Claim 11
Dependent Claim
21 words
An impact material for crushing hard material such as stone, substantially as hereinbefore described and as illustrated in the accompanying drawings.
References Cited (Backward Citations)
No citation records indexed.
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