US3612415A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Beater mill for separating nongrindable and grindable materials
Assignee: ULTREX CHEMIC GmbH
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Filing: 1969-02-24
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Granted: 1971-10-12
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Expires: 1989-02-24
Abstract
Abstract A beater mill for grinding grindable materials and separating nongrindable materials from a mixture comprises a fill chute, a rotor carrying rotating beaters partially surrounded by a sieve, and a discharge chute into which nongrindable materials are driven by the beaters. The discharge chute axis extends tangentially from the rotor for receiving the nongrindable materials. The fill chute has a bottom surface which is connected to the rotor housing at a point which is below the greatest height of the rotor diameter so that the mixture to be ground is struck by the beaters as it flows into the rotor region. The discharge chute is arranged at an angle to the fill chute and has an axis which intersects the fill chute axis within that quadrant of the rotor that faces the fill chute. Accordingly, materials falling back towards the rotor from the discharge chute are more likely to be again driven into the discharge chute and less likely to become jammed between the rotor and the sieve.
Inventors
- 👤 Herbert Alfred Merges
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:31
CPC Classifications
B; B02; B02C; B02C13/00; B02C13/26; B02C13/286; B02C2013/28618; B02C2013/28672; B02C2013/2869
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
304 words
In a beater mill for separating nongrindable materials and grinding the grindable material in a mixture, said mill comprising, in combination: a. a housing having upper and lower portions; b. a beater mill rotor means mounted for rotation in a direction of rotation within the housing and having rotating beaters defining a furthest structural extent and a tangential axis beginning substantially in the center of the upper ascending quadrant of said rotor means and a sieve fixed in said housing adjacent the bottom of the rotor means for passage therethrough of ground material; c. a fill chute defining an axis and attached to the upper portion of said housing adjacent said upper ascending quadrant for delivery of said mixture of material to the rotor means; d. a discharge chute means attached to the upper portion of said housing adjacent said fill chute in the direction of rotation of said rotor means for discharge of nongrindable material and oriented substantially in the direction of the tangential axis of the rotor means for receiving particles driven off by the beaters, and having an axis which is disposed at an angle to the fill chute and which axis intersects the axis of the fill chute outside of the furthest structural extent of the rotor means; the improvement in which: 1. said fill chute has a bottom surface arranged at an angle substantially in the range of 30* to 60* to the vertical, and which is attached to the side of the housing at a point below the greatest height of the rotor, which bottom surface has an imaginary extension which is approximately parallel to the fill chute axis, and 2. the discharge chute being arranged so that its axis intersects the axis of the fill chute within that quadrant of the rotor which faces the fill chute.
Claim 2
Dependent Claim
304 words
In a beater mill for separating nongrindable materials and grinding the grindable material in a mixture, said mill comprising, in combination: a. a housing having upper and lower portions; b. a beater mill rotor means mounted for rotation in a direction of rotation within the housing and having rotating beaters defining a furthest structural extent and a tangential axis beginning substantially in the center of the upper ascending quadrant of said rotor means and a sieve fixed in said housing adjacent the bottom of the rotor means for passage therethrough of ground material; c. a fill chute defining an axis and attached to the upper portion of said housing adjacent said upper ascending quadrant for delivery of said mixture of material to the rotor means; d. a discharge chute means attached to the upper portion of said housing adjacent said fill chute in the direction of rotation of said rotor means for discharge of nongrindable material and oriented substantially in the direction of the tangential axis of the rotor means for receiving particles driven off by the beaters, and having an axis which is disposed at an angle to the fill chute and which axis intersects the axis of the fill chute outside of the furthest structural extent of the rotor means; the improvement in which: 1. said fill chute has a bottom surface arranged at an angle substantially in the range of 30* to 60* to the vertical, and which is attached to the side of the housing at a point below the greatest height of the rotor, which bottom surface has an imaginary extension which is approximately parallel to the fill chute axis, and 2. the discharge chute being arranged so that its axis intersects the axis of the fill chute within that quadrant of the rotor which faces the fill chute.
Claim 3
Dependent Claim
27 words
the discharge chute being arranged so that its axis intersects the axis of the fill chute within that quadrant of the rotor which faces the fill chute.
Claim 4
Dependent Claim
27 words
the discharge chute being arranged so that its axis intersects the axis of the fill chute within that quadrant of the rotor which faces the fill chute.
Claim 5
Dependent Claim
47 words
The beater mill of claim 1 in which said sieve has a semicircular cross section and the discharge chute has a discharge opening at one end, and a wall which is disposed at an angle to both the discharge opening and the axis of the discharge chute.
Claim 6
Dependent Claim
35 words
The beater mill of claim 1 including additional slide plate means mounted within the discharge chute for directing materials within the chute falling back toward the rotor into the rotor quadrant facing the fill shaft.
Claim 7
Dependent Claim
41 words
The beater mill of claim 1 including a member having an abutment plate mounted within the housing opposing the fill chute and facing the rotor, and a slide plate attached at an angle to the abutment plate at its upper end.
Claim 8
Dependent Claim
20 words
The beater mill defined in claim 4 wherein the abutment plate has teeth facing the rotor whose tips point downwardly.
Claim 9
Dependent Claim
17 words
The beater mill of claim 4 including teeth mounted on the abutment plate whose tips point upwardly.
Claim 10
Dependent Claim
45 words
The beater mill defined in claim 4 wherein the abutment plate has a plurality of teeth facing the rotor, those which are above the top of the rotor having tips which face downwardly and those which are below said top having tips which face upwardly.
Claim 11
Dependent Claim
52 words
The beater mill of claim 1 wherein the housing includes a supporting frame to which said discharge chute is attached, and wall sections pivoted to the frame for movement from a first position in which they are part of a closed housing to an open position which permits access to the rotor.
Claim 12
Dependent Claim
31 words
The beater mill defined in claim 2 including a barrier plate pivoted to the discharge chute adjacent its opening for movement to various angular positions relative to the discharge chute axis.
Claim 13
Dependent Claim
30 words
The beater mill defined in claim 1 including an opening in the end of the discharge chute, and cover means secured to the chute for selectively closing the said opening.
Claim 14
Dependent Claim
23 words
The beater mill of claim 10 including means providing an airtight seal between the cover means and the edges of the discharge opening.
Claim 15
Dependent Claim
45 words
The beater mill defined in claim 11 in which said airtight seal includes sealing means mounted in the edges of the discharge opening and the cover means has a pivotal cover flap formed to engage said sealing means and extend beyond the discharge opening edges.
Claim 16
Dependent Claim
29 words
The beater mill defined in claim 11 wherein the airtight seal is mounted on the edge areas of the cover means which face the edges of the discharge opening.
Claim 17
Dependent Claim
25 words
The beater mill defined in claim 12 wherein the edges of the discharge opening and the associated edges of the cover means have coacting seals.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-10-11 | 1975-04-12 | 1975-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-11 | 1979-04-12 | 1979-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-11 | 1983-04-12 | 1983-10-12 | $7700.00 | Window Closed / Lapsed |