CA1122947A - Single-roll crusher with blow bars - Google Patents
Single-roll crusher with blow barsInfo
- Publication number
- CA1122947A CA1122947A CA321,258A CA321258A CA1122947A CA 1122947 A CA1122947 A CA 1122947A CA 321258 A CA321258 A CA 321258A CA 1122947 A CA1122947 A CA 1122947A
- Authority
- CA
- Canada
- Prior art keywords
- crushing
- crusher
- roll
- rolls
- bars
- 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
Links
Landscapes
- Crushing And Grinding (AREA)
Abstract
CRUSHER WITH IMPACTING BARS
Abstract of the Disclosure This invention relates to an improvement in a roll crusher which crushes loaded material by impact and pressure, comprising a crusher housing, a loading hopper, a rotatable roll holding impacting tools, and fixed or adjustable crushing bars mounted to the crushing wall of the crusher housing, the improvement comprising two mutually oppositely rotatable rolls, each independent of the other and adapted to crush the material, mounted together with two oppositely located crushing walls in one common crusher housing, and a roof-like chute means mounted above a gap between the two rolls and adapted to distribute the material in the hopper and feed it to crushing regions.
Abstract of the Disclosure This invention relates to an improvement in a roll crusher which crushes loaded material by impact and pressure, comprising a crusher housing, a loading hopper, a rotatable roll holding impacting tools, and fixed or adjustable crushing bars mounted to the crushing wall of the crusher housing, the improvement comprising two mutually oppositely rotatable rolls, each independent of the other and adapted to crush the material, mounted together with two oppositely located crushing walls in one common crusher housing, and a roof-like chute means mounted above a gap between the two rolls and adapted to distribute the material in the hopper and feed it to crushing regions.
Description
l~Z2~47 This invention relates to roll crushers which crush loaded material by impact and pressure, comprising a crusher housing, a loading hopper, a rotating roll holding the impacting tools, and fixed or adjustable crushing bars mounted to the crushing wall of the crusher housing.
Single roll crushers are widely used because of their economy when crushing materials of low hardness such as coal, rock salt, etc., the loaded clumps being broken up by means of a rotating roll with impacting tools forcing them against a fixed or adjustable wall. Such single roll crushers are composed of a crushing housing, a rotatable roll with the impacting tools mounted thereon, i.e., also rotatable and a fixed or adjustable crusher wall which may be smooth or serrated.
The broken-up material is removed underneath the crusher by a suitable conveyor which removes this material to another conveyor or shipping vehicle.
These crushers offer the advantage that they are economical to manufacture and that dust formation remains within tolerable limits.
The have, on the other hand, the drawback that their crushing efficiency is low compared to other crushing equipment.
Accordingly, where substantial crushing output is required, two or more crushers must be used side by side, whereby such equipment may be uneconomical compared to other units.
The invention therefore addresses the problem of providing an economical solution while retaining the same crushing procedure.
This problem is solved in accordance with the present invention by the provision of a roll-type crusher comprising a crusher housing having a pair of oppositely disposed crushing walls and crushing bars associated with the crushing walls and WS/ ~f l'\
~2Z9~7 a pair of mutually oppositely rotatable rolls, having impact bars, independently mounted in the crusher housing. Each roll is associated with one of the crushing walls and defines a crushing chamber therewith. A loading hopper is provided for feeding material into the crusher housing. An inverted V-shaped chute means is disposed intermediate the hopper and the space between the rolls for directing material in the hopper to the crushing chambers. The chute means defines material feed passages cornmunicating the hopper and the crushing chamber.
Gridiron means are independently insertable into the passages for closing the passages in whole or in part.
Because two single-roll crushers are integrated in one housing, the equipment operates more economically and also is more compact than if each single roll crusher were mounted in a special housing. Also, the loading surface of the input hopper is enlarged without the equipment operating at a greater height.
While two rolls are mounted in one housing in this con-struction, they do however differ fundamentally from the known two roll crushers which also cornprise two rolls in one housing.
The solution of the present invention offers two crushing regions, or two comminuting regions, namely between each roll and its crusher wall; the crushing processes in the two regions are independent of one another. Further, the two rolls can be driven independently of each other. In any event, material is not crushed in the space between the two rolls.
The reduction is size in the known equipment takes place between the two rolls, in other words, there is only one comminuting region. The direction of the roll rotation is ws/~
1~22947 mutually opposite, as is the case for the present invention.
However, because the loaded material is fed only to one crushing region, the loading hopper and its loading surface will be smaller for the same height and the same wall slope in this invention.
In order to further improve the crushing process in the present invention, one or more rows of fixed and/or adjustable crushing bars may be mounted in each crushing region in such a manner that shorter crushing bars at greater spacings are mounted in the upper row and longer bars with lesser spacing reaching as far as the roll are mounted in the lower rows, the upper row being used for pre-reduction and the lower rows of crushing bars for post-reduction. As mentioned, the gridirons partly or wholly blocking the feed passages to the two crushing chambers can be inserted independently of one another into these ducts and on one hand can limit or entirely stop the flow material in each crushing region independently of the other, and on the other hand may be used to unclog material by being suddenly forced inwardly or pulled out, and furthermore these gridirons can keep the material to be crushed from the rolls in the case of a power shortage or when the rolls are starting up or winding down, and thus prevent jamming of the crusher. The gridirons are automatically pushed in by compressed air or similar means the moment the crusher is shut off or shuts itself off in case of a malfunction. Accordingly, a feeder can be dispensed with. In known equipment the material is loaded by means of such feeders as conveyor belts, thrust loaders, etc., which uniformly remove the material from a preceding hopper.
When the crusher is shut off or turns itself off, the feeder ws/ :-1 29~7 also is automatically turned off so the rolls are free from excess material. This is necessary as otherwise the rolls could not start up again.
The two rolls may be mounted at different heights, with the latitude of adaptation furthermore to the slope of the conveyor removing the crusher material.
Most appropriately, the integration of two single-roll crushers in one common housing may be designed as a mobile ~ pre-crushing facility, the two single-roll crushers integrated in one housing together with their conveyor removing the crushed material being mounted on a substructure moving on wheels or tracks or other transport means.
-3a-ws/!~fi~
112Z~9~7 The invention will be ~urther illustrated l)y refcrellce to tht:
accompanying dra~ings, in whicsl:
I`igure 1 is a cross-section of 2 mobile crusher v~itsh two rolls;
and Figure 2 i5 a top ~riew of the crushing e~uipment.
The reference numerals denote the following:
1 = csushing rolls
Single roll crushers are widely used because of their economy when crushing materials of low hardness such as coal, rock salt, etc., the loaded clumps being broken up by means of a rotating roll with impacting tools forcing them against a fixed or adjustable wall. Such single roll crushers are composed of a crushing housing, a rotatable roll with the impacting tools mounted thereon, i.e., also rotatable and a fixed or adjustable crusher wall which may be smooth or serrated.
The broken-up material is removed underneath the crusher by a suitable conveyor which removes this material to another conveyor or shipping vehicle.
These crushers offer the advantage that they are economical to manufacture and that dust formation remains within tolerable limits.
The have, on the other hand, the drawback that their crushing efficiency is low compared to other crushing equipment.
Accordingly, where substantial crushing output is required, two or more crushers must be used side by side, whereby such equipment may be uneconomical compared to other units.
The invention therefore addresses the problem of providing an economical solution while retaining the same crushing procedure.
This problem is solved in accordance with the present invention by the provision of a roll-type crusher comprising a crusher housing having a pair of oppositely disposed crushing walls and crushing bars associated with the crushing walls and WS/ ~f l'\
~2Z9~7 a pair of mutually oppositely rotatable rolls, having impact bars, independently mounted in the crusher housing. Each roll is associated with one of the crushing walls and defines a crushing chamber therewith. A loading hopper is provided for feeding material into the crusher housing. An inverted V-shaped chute means is disposed intermediate the hopper and the space between the rolls for directing material in the hopper to the crushing chambers. The chute means defines material feed passages cornmunicating the hopper and the crushing chamber.
Gridiron means are independently insertable into the passages for closing the passages in whole or in part.
Because two single-roll crushers are integrated in one housing, the equipment operates more economically and also is more compact than if each single roll crusher were mounted in a special housing. Also, the loading surface of the input hopper is enlarged without the equipment operating at a greater height.
While two rolls are mounted in one housing in this con-struction, they do however differ fundamentally from the known two roll crushers which also cornprise two rolls in one housing.
The solution of the present invention offers two crushing regions, or two comminuting regions, namely between each roll and its crusher wall; the crushing processes in the two regions are independent of one another. Further, the two rolls can be driven independently of each other. In any event, material is not crushed in the space between the two rolls.
The reduction is size in the known equipment takes place between the two rolls, in other words, there is only one comminuting region. The direction of the roll rotation is ws/~
1~22947 mutually opposite, as is the case for the present invention.
However, because the loaded material is fed only to one crushing region, the loading hopper and its loading surface will be smaller for the same height and the same wall slope in this invention.
In order to further improve the crushing process in the present invention, one or more rows of fixed and/or adjustable crushing bars may be mounted in each crushing region in such a manner that shorter crushing bars at greater spacings are mounted in the upper row and longer bars with lesser spacing reaching as far as the roll are mounted in the lower rows, the upper row being used for pre-reduction and the lower rows of crushing bars for post-reduction. As mentioned, the gridirons partly or wholly blocking the feed passages to the two crushing chambers can be inserted independently of one another into these ducts and on one hand can limit or entirely stop the flow material in each crushing region independently of the other, and on the other hand may be used to unclog material by being suddenly forced inwardly or pulled out, and furthermore these gridirons can keep the material to be crushed from the rolls in the case of a power shortage or when the rolls are starting up or winding down, and thus prevent jamming of the crusher. The gridirons are automatically pushed in by compressed air or similar means the moment the crusher is shut off or shuts itself off in case of a malfunction. Accordingly, a feeder can be dispensed with. In known equipment the material is loaded by means of such feeders as conveyor belts, thrust loaders, etc., which uniformly remove the material from a preceding hopper.
When the crusher is shut off or turns itself off, the feeder ws/ :-1 29~7 also is automatically turned off so the rolls are free from excess material. This is necessary as otherwise the rolls could not start up again.
The two rolls may be mounted at different heights, with the latitude of adaptation furthermore to the slope of the conveyor removing the crusher material.
Most appropriately, the integration of two single-roll crushers in one common housing may be designed as a mobile ~ pre-crushing facility, the two single-roll crushers integrated in one housing together with their conveyor removing the crushed material being mounted on a substructure moving on wheels or tracks or other transport means.
-3a-ws/!~fi~
112Z~9~7 The invention will be ~urther illustrated l)y refcrellce to tht:
accompanying dra~ings, in whicsl:
I`igure 1 is a cross-section of 2 mobile crusher v~itsh two rolls;
and Figure 2 i5 a top ~riew of the crushing e~uipment.
The reference numerals denote the following:
1 = csushing rolls
2 = impact bars
- 3 = fixed or adjustable crushin~ bars mounted to the crushing wall
4 = the crusher housing -)5 - the roof-like chute over the rolls 6 = tshe inser,able gridirons 7 = the ~-belt drives for the two rolls 8 = the loading hopper 9 = the mobile substructure 10 = conveyor belt 11 = protective plate above conveyor belt and d river ' s cabin . )12 = driver's cabin 13 - csushing chambers 14/15 = crushing walls.
The materi21 to be crushed is fed through the hopper 8 and the chute 5 to tshe two crushing chambers 13. In these crushing chambers, the loaded material is comminuted by the rotating impact bars 2 and the fixed or adjustable crtlshing bars 3. The crushed material leaving the underside of the crushing space is fed by the conveyor belt 10 to an-other conveying equlpment such as a light truck or to another conveyor , 112Z947 ~ s p ~ 4 G a belt. By means of it, mobile suhsLruc~ure 9 the equipmcnt can change its si~e oI operation.
The cl-ushing bars are drivcn by known drives, preferably by V--belt drives 7. The two rolls are driven in mutually opposite rotation and are housed in a common crusher housing 4, whereby the equipmcnt is both compact and has a large loading hopper. LoadLng can take place by means of belts, mobile loading equipment or excavatina equip-ment .
The supply of the material to the crushing chambers can beblocked and even stopped entirely by using the movable gridirons 6.
These movable gridirons also can be used to unclog the loaded material.
It wii I be obvious to those skilled in the art that many modifi-cations may be made within the scope of the present invention without departing from the spirit thereof, and the invention includes all such modifications .
The materi21 to be crushed is fed through the hopper 8 and the chute 5 to tshe two crushing chambers 13. In these crushing chambers, the loaded material is comminuted by the rotating impact bars 2 and the fixed or adjustable crtlshing bars 3. The crushed material leaving the underside of the crushing space is fed by the conveyor belt 10 to an-other conveying equlpment such as a light truck or to another conveyor , 112Z947 ~ s p ~ 4 G a belt. By means of it, mobile suhsLruc~ure 9 the equipmcnt can change its si~e oI operation.
The cl-ushing bars are drivcn by known drives, preferably by V--belt drives 7. The two rolls are driven in mutually opposite rotation and are housed in a common crusher housing 4, whereby the equipmcnt is both compact and has a large loading hopper. LoadLng can take place by means of belts, mobile loading equipment or excavatina equip-ment .
The supply of the material to the crushing chambers can beblocked and even stopped entirely by using the movable gridirons 6.
These movable gridirons also can be used to unclog the loaded material.
It wii I be obvious to those skilled in the art that many modifi-cations may be made within the scope of the present invention without departing from the spirit thereof, and the invention includes all such modifications .
Claims (5)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A roll-type crusher comprising:
a crusher housing having a pair of oppositely disposed crushing walls and crushing bars associated with said crushing walls;
a pair of mutually oppositely rotatable rolls, having impact bars, independently mounted in said crusher housing, each said roll being associated with one of said crushing walls and defining therewith a crushing chamber;
a loading hopper for feeding material to said crusher housing;
an inverted V-shaped chute means disposed intermediate said hopper and the space between said rolls for directing material in said hopper to said crushing chambers, said chute means defining material feed passages between said hopper and said crushing chambers; and gridiron means independently insertable into said passages for closing said passages in part or in whole and dissolving material cloggings by step-like insertion or removal thereof into or from said feed passages.
a crusher housing having a pair of oppositely disposed crushing walls and crushing bars associated with said crushing walls;
a pair of mutually oppositely rotatable rolls, having impact bars, independently mounted in said crusher housing, each said roll being associated with one of said crushing walls and defining therewith a crushing chamber;
a loading hopper for feeding material to said crusher housing;
an inverted V-shaped chute means disposed intermediate said hopper and the space between said rolls for directing material in said hopper to said crushing chambers, said chute means defining material feed passages between said hopper and said crushing chambers; and gridiron means independently insertable into said passages for closing said passages in part or in whole and dissolving material cloggings by step-like insertion or removal thereof into or from said feed passages.
2. A roll-type crusher as defined in claim 1, further including means for automatically inserting said gridiron means into said material feed passages upon occurrence of a power failure.
3. A roll-type crusher as defined in claim 1 or claim 2, further including rows of crushing bars mounted one above the other in each said crushing wall, the crushing bars in upper rows being of lesser length but greater spacing than those in lower rows for pre-reduction while the crushing bars in the lower rows being of greater length and of lesser spacing for post-reduction.
4. A roll crusher according to claim 1 including means mounting the two rolls at different heights which can be adapted to an incline of a conveyor belt removing comminuted material.
5. A roll crusher according to claim 1 including a mobile substructure means adapted to move on wheels or tracks, and supporting the crushing rolls, the loading hopper, and a conveyor for removing comminuted material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA321,258A CA1122947A (en) | 1979-02-12 | 1979-02-12 | Single-roll crusher with blow bars |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA321,258A CA1122947A (en) | 1979-02-12 | 1979-02-12 | Single-roll crusher with blow bars |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1122947A true CA1122947A (en) | 1982-05-04 |
Family
ID=4113513
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA321,258A Expired CA1122947A (en) | 1979-02-12 | 1979-02-12 | Single-roll crusher with blow bars |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1122947A (en) |
-
1979
- 1979-02-12 CA CA321,258A patent/CA1122947A/en not_active Expired
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |