US4732334A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for crushing brittle material for comminution
Assignee: ThyssenKrupp Industrial Solutions AG
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Filing: 1987-03-09
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Granted: 1988-03-22
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Expires: 2007-03-09
Abstract
Abstract The invention relates to apparatus for crushing brittle material for comminution which is subjected to individual grain crushing and material bed crushing in a roll crusher at high pressure and with agglomerates being formed, these agglomerates being loosened in the sifter with the aid of a separate arrangement and removed from the crushing system. In this way a crushing stage which is provided for further crushing has its load significantly reduced and as a result the apparatus is rendered considerably more economical.
Inventors
- 👤 Manfred Muller
- 👤 Gerhard Gudat
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 03:29
CPC Classifications
B; B07; B07B; B07B7/00; B07B7/08; B07B7/083; B02; B02C; B02C21/00; B02C21/002; B02C21/005; B02C23/00; B02C23/08; B02C23/18; B02C23/24; B02C23/32
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
183 words
Apparatus for crushing brittle material comprising a roll crusher in which such material is subjected to individual grain crushing and material bed crushing at high pressure causing the formation of agglomerates; means for supplying said crusher with said material; a sifter downstream from said crusher; means for delivering crushed and agglomerated material from said crusher to said sifter; a rotary distributor mounted in said sifter in a position to receive material delivered thereto from said crusher; means for rotating said distributor at a speed to cause material thereon to move along a path radially outwardly of said distributor for discharge therefrom; impact means mounted in the path of movement of said material for engagement thereby to disagglomerate said material; means for establishing an airstream moving upwardly past said distributor at a velocity to entrain and carry upwardly relative fine disagglomerated material; means for receiving relatively coarse material that is incapable of being entrained in said air stream; rotary sifting means mounted above said distributor and through which said entrained material may pass; and means for rotating said sifting means independently of said distributor.
Claim 2
Dependent Claim
183 words
Apparatus for crushing brittle material comprising a roll crusher in which such material is subjected to individual grain crushing and material bed crushing at high pressure causing the formation of agglomerates; means for supplying said crusher with said material; a sifter downstream from said crusher; means for delivering crushed and agglomerated material from said crusher to said sifter; a rotary distributor mounted in said sifter in a position to receive material delivered thereto from said crusher; means for rotating said distributor at a speed to cause material thereon to move along a path radially outwardly of said distributor for discharge therefrom; impact means mounted in the path of movement of said material for engagement thereby to disagglomerate said material; means for establishing an airstream moving upwardly past said distributor at a velocity to entrain and carry upwardly relative fine disagglomerated material; means for receiving relatively coarse material that is incapable of being entrained in said air stream; rotary sifting means mounted above said distributor and through which said entrained material may pass; and means for rotating said sifting means independently of said distributor.
Claim 3
Dependent Claim
14 words
Apparatus according to claim 1 wherein said impact means are mounted on said distributor.
Claim 4
Dependent Claim
19 words
Apparatus according to claim 2 wherein said impact means comprises two groups of circumferentially spaced elements of different height.
Claim 5
Dependent Claim
17 words
Apparatus according to claim 3 wherein one of said groups is radially inward of the other group.
Claim 6
Dependent Claim
26 words
Apparatus according to claim 1 wherein the height of the radially inward group of elements is less than that of the radially outward group of elements.
Claim 7
Dependent Claim
38 words
Apparatus according to claim 1 wherein said impact means comprises first impact elements carried by said distributor at its periphery, said distributor being mounted within a drum having additional impact elements radially outward of said first impact elements.
Claim 8
Dependent Claim
15 words
Apparatus according to claim 6 including means for rotating said drum independently of said distributor.
Claim 9
Dependent Claim
40 words
Apparatus according to claim 7 wherein the means for rotating said distributor comprises a first shaft connected to said distributor and wherein the means for rotating said drum comprises a hollow shaft accommodating said shaft and connected to said drum.
Claim 10
Dependent Claim
186 words
Apparatus for crushing brittle material comprising a roll crusher in which such material is subjected to individual grain crushing and material bed crushing at high pressure causing the formation of agglomerates; means for supplying said crusher with said material; a sifter downstream from said crusher; means for delivering crushed and agglomerated material from said crusher to said sifter; a rotary distributor mounted in said sifter in a position to receive material delivered thereto from said crusher; means for rotating said distributor at a speed to cause material thereon to move along a path radially outward of said distributor for discharge therefrom; first impact means carried by said distributor in the path of movement of said material for engagement thereby to disagglomerate said material; rotary, second impact means mounted radially outward of said distributor and in the path of material discharged from said distributor for engagement by such material; means for rotating said second impact means; and means for establishing an airstream moving upwardly past said distributor and said second impact means at a velocity to entrain and carry upwardly into said sifter relatively fine disagglomerated material.
Claim 11
Dependent Claim
186 words
Apparatus for crushing brittle material comprising a roll crusher in which such material is subjected to individual grain crushing and material bed crushing at high pressure causing the formation of agglomerates; means for supplying said crusher with said material; a sifter downstream from said crusher; means for delivering crushed and agglomerated material from said crusher to said sifter; a rotary distributor mounted in said sifter in a position to receive material delivered thereto from said crusher; means for rotating said distributor at a speed to cause material thereon to move along a path radially outward of said distributor for discharge therefrom; first impact means carried by said distributor in the path of movement of said material for engagement thereby to disagglomerate said material; rotary, second impact means mounted radially outward of said distributor and in the path of material discharged from said distributor for engagement by such material; means for rotating said second impact means; and means for establishing an airstream moving upwardly past said distributor and said second impact means at a velocity to entrain and carry upwardly into said sifter relatively fine disagglomerated material.
Claim 12
Dependent Claim
26 words
Apparatus according to claim 9 wherein said means for rotating said distributor and said means for rotating said second impact means are independent of one another.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-03-22 | 1991-09-21 | 1992-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-03-22 | 1995-09-21 | 1996-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-03-22 | 1999-09-21 | 2000-03-22 | $7700.00 | Window Closed / Lapsed |