EP0912247A1 - Verbesserter erzbrecher - Google Patents
Verbesserter erzbrecherInfo
- Publication number
- EP0912247A1 EP0912247A1 EP97917357A EP97917357A EP0912247A1 EP 0912247 A1 EP0912247 A1 EP 0912247A1 EP 97917357 A EP97917357 A EP 97917357A EP 97917357 A EP97917357 A EP 97917357A EP 0912247 A1 EP0912247 A1 EP 0912247A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- mineral
- collection member
- roller
- crusher
- accumulation
- 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.)
- Granted
Links
Classifications
-
- 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
- B02C13/26—Details
- B02C13/282—Shape or inner surface of mill-housings
-
- 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
- B02C13/02—Disintegrating by mills having rotary beater elements ; Hammer mills with horizontal rotor shaft
- B02C13/06—Disintegrating by mills having rotary beater elements ; Hammer mills with horizontal rotor shaft with beaters rigidly connected to the rotor
- B02C13/09—Disintegrating by mills having rotary beater elements ; Hammer mills with horizontal rotor shaft with beaters rigidly connected to the rotor and throwing the material against an anvil or impact plate
Definitions
- the present invention relates to a mineral crusher for reducing a mineral material, comprising a rotating roller having a plurality of projecting impact members.
- a rotating drum has a plurality of blow bars, impact bars or teeth, which as the roller rotates at high speed, impact large lumps and particles of the mineral causing reduction in mineral particle size.
- the blow bars throw the mineral against a breaker plate, spaced apart from the roller. Reduction of the mineral material occurs by impact with the blow bars, impellers or teeth and by impact with the breaker plate.
- a prior art mineral crusher assembly comprising a roller 1 arranged to rotate under power about an axle 2, the roller comprising a plurality of impeller bars 3 extending radially outward of the roller, an outer casing 4 comprising first and second opposite upright sides, a front panel 6, a back panel 7 and a roof, the roof being lined with a plurality of breaker plates 8, 9, 10 against which the mineral is thrown, and a grid 11.
- the mineral On entering an open mouth 12 of the crusher, the mineral encounters the rapidly rotating roller 1 and is reduced by impact with the roller, and particularly the impeller bars 3.
- the impeller bars throw lumps of the material against the breaker plates 8, 9, 10 and the mineral repeatedly bounces backwards and forwards between the roller and the breaker plates, being reduced on every impact.
- the mineral On reaching the rear of the crusher, the mineral drops down under gravity, and under force imparted by the rotating roller, onto the grid 11. The reduced mineral drops out from underneath the crusher into a hopper, conveyor belt or the like.
- the maximum size of particle to which the mineral is reduced is largely determined by the distance between the final breaker plate 10 and the roller.
- the position of the final breaker plate 10 with respect to the roller is adjustable.
- the resulting reduced mineral has a range of particle sizes varying from various small particles eg. grains of sand, through aggregate of 10mm, 20mm average particle size, up to the maximum particle size, eg. 100mm.
- the reduced mineral may be separated and graded into different sized particles as required on exiting the crusher.
- the grid 11 comprises a plurality of substantially parallel bars spaced apart from each other.
- the position of the grid with respect to the roller may be adjustable, and the grid may be swung away from the roller, being swung from a hinge.
- the grid 11 is shown schematically in Fig. 3 herewith.
- FIG. 4 Another prior art crusher, shown in Fig. 4 herewith, operates similarly as the crusher of Fig. 2, except that the final reduction occurs by the hinged grid section 30 completely underneath the roller, between the front and rear panels of the casing.
- the grid 11 and the semi circular grid 30 each experience a high degree of wear, leading to increased maintenance and running costs of the crusher.
- a mineral crusher for reducing a mineral material comprising:
- the accumulation of material may perform the same, similar or equivalent function as the prior art grid, grill or semi circular section in known crushers, of breaking or reducing the mineral particles. Maintenance costs and the need for replacing parts may be reduced, by dispensing with the prior art grill, grid or semi circular member.
- the accumulation of material may be unaffected by the passage of large objects, eg. steel bars, blocks of wood.
- a surface of the accumulation of material which faces the roller may be constantly replenished by incorporation of the thrown material into the accumulation material.
- said collection member comprises an upper surface arranged for collecting said accumulation material.
- an area of the upper surface of said collection member which is exposed to the thrown mineral material is adjustable, such as to allow the volume of accumulated material to be varied.
- a surface area of the accumulation of mineral exposed to the thrown mineral can be varied.
- the mineral accumulates such that, said accumulation of mineral has an inclined face which faces oppositely said roller.
- said collection member is arranged at a position below a main rotational axis ofthe roller.
- said collection member extends in a plane transverse to a tangent of a direction of rotation of said impact members.
- said collection member extends in a plane substantially parallel to a plane passing through a main rotational axis of the roller.
- the crusher comprises a casing substantially enclosing said roller, there being a mineral passage between an upright wall of the casing and the roller, wherein said collection member is positioned to intercept mineral material passing through said passage.
- said collection member is positioned below a substantially upright breaker plate, the arrangement being such that the accumulation of mineral material forms between the upright breaker plate and the collection member.
- said collection member is moveable to allow passage of over size material past the collection member.
- said collection member is arranged to be tiltable about a substantially horizontal position.
- said collection member is resiliently biased to return to the substantially horizontal position.
- an adjustable breaker plate is positioned above said collection member.
- said collection member comprises a plate of hardened steel.
- a mineral crusher for reducing a mineral material comprising:
- a rotatable roller having a plurality of projecting impact members; a ⁇ adjustable breaker plate arranged opposite said roller, and capable of adjustment ether towards or away from the roller,
- said breaker plate is capable of adopting an operating position in which the breaker plate is maintained relatively rigidly under the impact of the mineral material against the breaker plate, and is capable of adopting a release position said release position being further away from the roller than said operating position.
- said adjustable breaker plate is resiliently biased towards the operating position.
- said breaker plate is arranged to pivot about an upper end thereof.
- the invention includes a method of reducing a mineral material in a mineral crusher, said method comprising the steps of:
- roller using the roller to impel or throw a stream of mineral material towards the accumulation of mineral material.
- Fig. 5 shows in side elevation a mineral crusher according to a first preferred embodiment of the present invention having an extended collection member
- Fig. 6 shows in cut away side view the mineral crusher of Fig. 5, having a returned collection member for collecting and retaining an accumulation of mineral;
- Fig. 7 shows the mineral crusher having the collection member tilted, for example to accommodate passage of an over sized object
- Fig. 8 shows in rear view the mineral crusher.
- a mineral crusher comprises a roller 50 arranged to rotate about a main central axis 51 , by means of a central axle 52, which may be driven externally of the crusher, the roller comprising a plurality of impact members 53, 54, 55, 56 extending substantially radially from the roller; a casing 57, comprising a base portion 58 and a canopy portion 59, the base portion 58 comprising first and second base sides, one positioned each side of the roller, and front and end base plates 60, 61 , respectively, and the canopy 59 comprising first and second canopy sides, positioned either side of the roller, between the canopy sides a mouth portion 62, for entering mineral into the canopy, and a sloping roof portion 63, 64.
- the canopy 59 is hingedly connected to the base 58 by means of removable hinges 70, 71 provided at the front and rear of the casing respectively, so that the canopy can tilt either backwards or forwards, for maintenance and for clearance of debris etc.
- the interior of the canopy is lined with a plurality of thick steel plates 75, 76, 77, against which mineral may be impacted.
- an adjustable breaker plate 80 At a rear end of the roof 59 is provided an adjustable breaker plate 80, which may be arranged in an upright position or vertically. The breaker plate is adjustable, such that a gap between the breaker plate 80 and the roller 50 may be varied for producing a selected size of mineral particles.
- the adjustable breaker plate 80 is resiliently biased by a resilient means 90, in the form of one or a plurality of coil springs, such as to allow the adjustable breaker plate 80 to be swung away from the roller under the force of an over size article, eg. steel object such as steel bar or girder, or a large block of wood.
- the adjustable breaker plate 80 provided with adjustment means secured to a reverse side of the breaker plate and to a breaker plate support 81 comprising the canopy 59.
- the adjustable breaker plate is capable of adopting a normal operating position, in which the breaker plate does not move under the forces of normal impact of mineral material there against, or adopting a release position, in which the adjustable breaker plate is capable of pivoting about a pivot axis at an upper end of the breaker plate, so as to move further away from the roller.
- a collection member 100 in the form of a thick hardened steel plate which projects into a passage 101 between the rear end of the base of the casing and the roller 50.
- the collection member can be slid in a substantially horizontal direction either towards or away from the roller, such that a surface area of the collection member which is exposed in the passage 101 can be increased or reduced.
- the plane of the surface of the collection member exposed in the passage is presented transverse to a tangent to the direction of rotation of the roller.
- the collection member is secured to a collection member base 105 in the form of a box section steel fabrication, and a front end of the collection member projects over one end of the collection member base.
- the rear end of the collection member is secured to the collection member base by elongate bolts or other means, and compression springs 107, with the effect that the rear end of the collection member is urged downwards onto the collection member base.
- the forward end of the collection member is depressed with sufficient force, the collection member is tiltable, against the resilience of the compression springs 107, the collection member immediately returning to the substantially horizontal position upon release of the downward force on the front of the collection member, by virtue of the resilience of the compression springs 107.
- Fig. 6 of the accompanying drawings there is shown an example of passage of mineral through the crusher under normal operation.
- the drum 50 rotates in an anti-clockwise direction as seen in Fig. 6, ie in a direction towards the rear of the casing and towards the breaker plates.
- the impact members 53-56 propel the mineral at the breaker plates lining the roof, and the mineral bounces between the roller and impact members and the breaker plates of the roof, reducing in size by impact with the breaker plates, roller impact members and other pieces of mineral.
- the adjustable breaker plate 80 in combination with the impact members and roller causes crushing and breaking of the mineral, and from the lower portion of the suspended adjustable upright breaking plate 80, the mineral is propelled and thrown in a general downward direction, where an accumulation of the mineral is collected on the upper surface 102 of the collection member 100, between the collection member and a vertical fixed breaker plate 108 at the rear of the base, to cause a scree type build up 200 of mineral as shown schematically in Fig. 6.
- the volume of the accumulation may be altered by sliding the collection member further towards the roller, or decreased by retracting the collection member away from the roller.
- An inclined outer face 201 of the accumulated mineral scree faces the roller.
- the thrown mineral impacts with the accumulation of mineral, causing reduction of the thrown mineral by impacting with the accumulated mineral.
- Mineral may also be thrown against the substantially vertical breaker plate 108, and the accumulation of material built up between the upper surface of the collection member 100 and the upright or substantially vertical breaker plate 108. Material running off the accumulated material falls out of the open base of the casing, into a hopper or other receptacle, or into a pile underneath the crusher.
- an oversize or non-reducible object 800 eg a large piece of steel, a girder or steel bar, or a large block of wood passes through the crusher.
- a lower end of the adjustable breaker plate 80 swings against the adjustable breaker plate support 81 , when the oversize object passes through the gap between the roller and the adjustable breaker plate 80.
- the springs of the adjustable breaker plate support are pre-selected such as to maintain the breaker plate in the normal operating position as shown in Fig. 5 for forces on the breaker plate caused by normal crushing of material, but to allow some movement of the breaker plate to a release position under extreme forces, such as caused by the passage of an oversized object.
- the lower end of the adjustable breaker plate is immediately returned to the normal operating position by the resilience of the compression coil springs of the adjustable breaker plate support 81.
- the oversize object 800 reaches a position 802 in the passage 101 , at which the object must pass between the collection member 100 and the roller 50, the forward end of the collection member 100 tilts as described above, against the compression springs 107 acting on the rear of the collection member. The accumulation of mineral material will be gouged out, or otherwise dislodged by passage of the oversize object 800 past the collection member.
- the collection member 100 returns to its substantially horizontal position and continues to collect mineral as previously.
- the mineral crusher Through successive operation of the mineral crusher, the volume of the accumulation of the material builds up to its previous level or a substantially similar volume, and the crusher may operate as previously, breaking the mineral stream by impact with the accumulation of mineral material.
- Fig. 8 there is shown the mineral crusher in rear view, in which the plurality of compression springs 107 are seen urging a portion of the collection member 100 to a horizontal extending flange 900 of the rear end of the casing base, for keeping the collection member in a substantially horizontal position.
- First and second elongate bolts 901, 902 secure the compression springs 107 to the flange 900, the bolts passing through the compression springs 107, through apertures in the collection member 100, and being secured to the flange 900.
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Crushing And Pulverization Processes (AREA)
- Crushing And Grinding (AREA)
- Disintegrating Or Milling (AREA)
- Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Saccharide Compounds (AREA)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9608283 | 1996-04-22 | ||
GBGB9608283.9A GB9608283D0 (en) | 1996-04-22 | 1996-04-22 | Improvements to mineral crusher |
PCT/GB1997/001079 WO1997039828A1 (en) | 1996-04-22 | 1997-04-18 | Improvement to a mineral crusher |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0912247A1 true EP0912247A1 (de) | 1999-05-06 |
EP0912247B1 EP0912247B1 (de) | 2000-11-08 |
Family
ID=10792450
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97917357A Expired - Lifetime EP0912247B1 (de) | 1996-04-22 | 1997-04-18 | Verbesserter erzbrecher |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP0912247B1 (de) |
AT (1) | ATE197411T1 (de) |
AU (1) | AU2573497A (de) |
DE (1) | DE69703492T2 (de) |
ES (1) | ES2154459T3 (de) |
GB (1) | GB9608283D0 (de) |
WO (1) | WO1997039828A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7913941B2 (en) | 2007-06-15 | 2011-03-29 | Riley Power Inc. | Crusher block assembly for particulate size reduction system |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000000479A (ja) * | 1998-06-17 | 2000-01-07 | Fujikawa Kinzoku Kk | ウェザーストリップの廃材の破砕・分離加工方法及びその装置 |
CN111495500B (zh) * | 2020-04-20 | 2020-12-15 | 邯郸市斯诺普胶管有限公司 | 一种增强型橡胶软管原料密练方法 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2292852A (en) * | 1940-07-17 | 1942-08-11 | Nordberg Manufacturing Co | Impact crusher |
GB633102A (en) * | 1947-03-24 | 1949-12-12 | George Henry Pattinson | Improvements in or relating to impact breaking or crushing machines |
DE967697C (de) * | 1952-03-14 | 1957-12-05 | Esch Werke K G Maschinenfabrik | Schlag- oder Schleudermuehle mit in beiden Drehrichtungen antreibbarem Rotor |
CH360871A (de) * | 1958-09-03 | 1962-03-15 | Hochdorf Ag Maschf | Vorrichtung zum Zerkleinern faseriger Landwirtschaftsprodukte |
DE2541036C2 (de) * | 1975-09-15 | 1985-04-18 | Hazemag Dr. E. Andreas GmbH & Co, 4400 Münster | Mehrzweck-Prallmühle |
JPH0779969B2 (ja) * | 1991-01-14 | 1995-08-30 | 株式会社栗本鐵工所 | 横型衝撃式破砕機 |
JP2684904B2 (ja) * | 1991-11-08 | 1997-12-03 | 株式会社栗本鐵工所 | 横型の衝撃式破砕整粒機 |
-
1996
- 1996-04-22 GB GBGB9608283.9A patent/GB9608283D0/en active Pending
-
1997
- 1997-04-18 EP EP97917357A patent/EP0912247B1/de not_active Expired - Lifetime
- 1997-04-18 ES ES97917357T patent/ES2154459T3/es not_active Expired - Lifetime
- 1997-04-18 AU AU25734/97A patent/AU2573497A/en not_active Abandoned
- 1997-04-18 DE DE69703492T patent/DE69703492T2/de not_active Expired - Fee Related
- 1997-04-18 AT AT97917357T patent/ATE197411T1/de not_active IP Right Cessation
- 1997-04-18 WO PCT/GB1997/001079 patent/WO1997039828A1/en active IP Right Grant
Non-Patent Citations (1)
Title |
---|
See references of WO9739828A1 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7913941B2 (en) | 2007-06-15 | 2011-03-29 | Riley Power Inc. | Crusher block assembly for particulate size reduction system |
Also Published As
Publication number | Publication date |
---|---|
ES2154459T3 (es) | 2001-04-01 |
ATE197411T1 (de) | 2000-11-11 |
DE69703492T2 (de) | 2001-06-13 |
DE69703492D1 (de) | 2000-12-14 |
GB9608283D0 (en) | 1996-06-26 |
AU2573497A (en) | 1997-11-12 |
EP0912247B1 (de) | 2000-11-08 |
WO1997039828A1 (en) | 1997-10-30 |
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