EP2781266A1 - Device for crushing a material - Google Patents

Device for crushing a material Download PDF

Info

Publication number
EP2781266A1
EP2781266A1 EP14000980.4A EP14000980A EP2781266A1 EP 2781266 A1 EP2781266 A1 EP 2781266A1 EP 14000980 A EP14000980 A EP 14000980A EP 2781266 A1 EP2781266 A1 EP 2781266A1
Authority
EP
European Patent Office
Prior art keywords
crushing
crusher
electric motor
crusher roller
roller
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.)
Withdrawn
Application number
EP14000980.4A
Other languages
German (de)
French (fr)
Inventor
Bojan Jezernik
Janko Avbersek
Miro Tisnikar
Danilo Jezernik
Dusan Cizmek
Anton Kotnik
Simon Dobaj
Miran Skledar
Bogomir Trebicnik
Daniel Sibanc
Danilo Rednjak
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HTZ Velenje IP d o o
Original Assignee
HTZ Velenje IP d o o
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by HTZ Velenje IP d o o filed Critical HTZ Velenje IP d o o
Publication of EP2781266A1 publication Critical patent/EP2781266A1/en
Withdrawn legal-status Critical Current

Links

Images

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
    • B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
    • B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
    • B02C18/16—Details
    • B02C18/24—Drives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
    • B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
    • B02C18/14—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within horizontal containers
    • B02C18/145—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within horizontal containers with knives spaced axially and circumferentially on the periphery of a cylindrical rotor unit
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C4/00—Crushing or disintegrating by roller mills
    • B02C4/10—Crushing or disintegrating by roller mills with a roller co-operating with a stationary member
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C4/00—Crushing or disintegrating by roller mills
    • B02C4/28—Details
    • B02C4/42—Driving mechanisms; Roller speed control

Definitions

  • the invention refers to a device for crushing a material, especially coal. It particularly refers to a device for crushing, in which material to be crushed is transported in a substantially horizontal direction, wherein the crushing element is a rotary roller provided with teeth.
  • a further group of crushers comprises a rotor with teeth and a fixed crusher plate.
  • Crushers are often used at a site where ore or coal is excavated, more precisely in a mine gallery, since they are used for crushing large pieces of ore or coal into smaller ones which are much easier and safer to be further manipulated and transported. Large pieces of material often fall from conveyors, get stuck on filling areas and cause congestions in transportation and damage on conveyors. In mines and coal mines methane and coal dust may be present. Overheating of mechanical parts due to friction therefore presents a potential risk to fire and explosion.
  • a further disadvantage of known crushers is their huge dimensions owing to projecting parts, since driving means are arranged on the housing of the crusher. This poses a considerable obstacle in mines during transport and installation due to a limited space available.
  • the technical problem is how to provide a compact construction of a device for crushing a material with small dimensions in relation to its driving power, which will not have any projecting parts and will at the same time be safe from fire and explosion and safe to work with.
  • Rotational movement is transferred from the drive shaft with a pinion to the sun gear and from there to planetary gears and further to the crusher roller with the annular gear with internal toothing.
  • the control unit comprises a relay circuit and at least one temperature sensor that electrically protect the electric motor against overheating in case of overload.
  • the temperature sensor disconnects the drive electric motor at a pre-determined temperature by means of the relay circuit.
  • Said at least one temperature sensor is arranged in a head of electric winding of the electric motor and/or in a bearing casing of the drive and/or output shaft of the electric motor and/or in a water cooled casing of the electric motor.
  • the control unit further comprises at least one sensor for detecting rotation of the crusher roller. In case the drive shaft gets ruptured, the sensor disconnects the electric motor.
  • the cover closing one of the sides of the crusher roller is dismounted together with the electric motor and the drive shaft.
  • the ruptured drive shaft is replaced by a new one and mounted back into the crusher roller.
  • the device for crushing a material further comprises:
  • the crusher blades are equally distributed on the external surface of the crusher roller alternately in a plurality of first V-shaped rows that comprises at least 3, preferably 5 crusher blades, and a plurality of second V-shaped rows that comprise at least 2, preferably 4 crusher blades, wherein the crusher blades of the second row are arranged such that, when viewed in axial direction of the crusher roller, they are arranged substantially on one half of the axial distance of two adjacent crusher blades of the first row.
  • the device of the invention can be adapted to be suitable for crushing other materials, such as stone, concrete, constructional waste material, wood etc. by adequately selecting drive power, gear ratio of gears, shapes of the crusher blades and their arrangement on the outer cover of the crusher roller; the device can also be used in other environments, such as stone quarries, construction sites, etc.
  • Advantages of the device for crushing a material over known devices of this type are a compact geometry of the device devoid of projecting parts, smaller dimensions of the device, smaller device weight, better and easier mobility of the device, good protection of the rotary parts of the device and thus reliable operation of the device, simple assembly and disassembly and maintenance of constructional parts of the drive of the device for crushing a material, electric and mechanical protection of the device against overload, and fire and explosion safe design of the drive of the device.
  • a device 1 for crushing a material that comprises:
  • the pinion has 18 teeth
  • the sun gear is provided with internal toothing with 18 teeth and with external toothing with 33 teeth
  • the planetary gears have 53 teeth
  • the annular gear with internal toothing has 144 teeth.
  • the control unit comprises a relay circuit and at least one temperature sensor.
  • Said at least one temperature sensor is arranged in a head of electric winding of the electric motor and/or in a bearing casing of the drive and/or output shaft of the electric motor and/or in a water cooled casing of the electric motor.
  • a thermistor with positive temperature coefficient (PTC) is selected as a temperature sensor.
  • the drive shaft of the electric motor is formed with weakened area 15, such that it gets ruptured in case of overload and the crusher roller immediately loses driving power.
  • the drive unit further comprises at least one sensor for detecting rotation of the crusher roller.
  • the sensor disconnects the electric motor.
  • the sensor for detecting rotation of the crusher roller can be an pulse sensor.
  • the device for crushing a material further comprises:
  • the crusher blades are equally distributed on the external surface of the crusher roller alternately in a plurality of first V-shaped rows 20 that comprises 5 crusher blades, and a plurality of second V-shaped rows 21 that comprises 4 crusher blades, wherein the crusher blades of the second row are arranged such that, when viewed in axial direction of the crusher roller, they are arranged substantially on one half of the axial distance of two adjacent crusher blades of the first row.
  • the device of the invention can be adapted to be suitable for crushing other materials, such as stone, concrete, constructional waste material, wood etc. by adequately selecting drive power, gear ratio of gears, shapes of the crusher blades and their arrangement on the outer cover of the crusher roller; the device can also be used in other environments, such as stone quarries, construction sites, etc.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
  • Crushing And Pulverization Processes (AREA)

Abstract

The invention refers to a device for crushing a material, especially coal. The device of the invention solves the technical problem how to provide a compact construction of a device for crushing a material that will be devoid of projecting parts and will at the same time be safe from fire and explosion. The device for crushing a material comprises a steel housing (2), a chain conveyor (5), a crusher roller (6) with crusher blades (8), an electric motor (10), a control unit for controlling the drive of the device, and a planetary gear (22). The electric motor (10) and the planetary gear (22) are arranged in the interior of the crusher roller (6). Rotational movement is transferred from the drive shaft (11) with a pinion (12) to the sun gear (13) and from there to planetary gears (14) and further to the crusher roller with the annular gear (9) with internal toothing. The drive shaft of the electric motor is formed with weakened area (15).

Description

    Field of Invention
  • The invention refers to a device for crushing a material, especially coal. It particularly refers to a device for crushing, in which material to be crushed is transported in a substantially horizontal direction, wherein the crushing element is a rotary roller provided with teeth.
    • Prior Art
  • Various devices for crushing materials are known from prior art. Two basic principles of crushing are known: in the first one, a material is accelerated and gets crushed when it hits against a crusher plate, in the second one, there are two plates approaching each other and thus exerting mechanical load onto the material. The plates can be straight and arranged at an angle to each other. The material is crushed when the angle between them is periodically changed. This type of crushers is called jaw crushers. Another type of crushing devices is provided with one concave plane and a conical head performing circular movement, yet not rotating. Relative movement between the planes is thus created. There are known devices with a rotor, on which impact hammers are arranged that crush material by an impact effect. There are also known devices that comprise two toothed rotors driven by huge torque and low rotation velocity. When the rotors rotate in reverse direction, the rotor teeth grab the material and exert mechanical load on it until the material is ruptured, i. e. crushed into smaller pieces. A further group of crushers comprises a rotor with teeth and a fixed crusher plate.
  • In known crushers, drive means with a small pulley is arranged on the housing of a crusher and connected with the two crusher rotors by a larger pulley by way of a belt. Rotary parts are protected by covers. One such device is disclosed in document GB 922 986 . An advantage of such solution is the fact that no machinery breakage due to possible overload occurs. Overload may occur in a case when a harder material gets between the crusher roller and the crusher plate. In such a case the belt slips onto the pulleys. A disadvantage of such solution resides in the fact that, when the belt glides on the pulleys, heat is generated due to friction and mechanical parts get heated. Crushers are often used at a site where ore or coal is excavated, more precisely in a mine gallery, since they are used for crushing large pieces of ore or coal into smaller ones which are much easier and safer to be further manipulated and transported. Large pieces of material often fall from conveyors, get stuck on filling areas and cause congestions in transportation and damage on conveyors. In mines and coal mines methane and coal dust may be present. Overheating of mechanical parts due to friction therefore presents a potential risk to fire and explosion. A further disadvantage of known crushers is their huge dimensions owing to projecting parts, since driving means are arranged on the housing of the crusher. This poses a considerable obstacle in mines during transport and installation due to a limited space available.
    • Technical Problem
  • The technical problem is how to provide a compact construction of a device for crushing a material with small dimensions in relation to its driving power, which will not have any projecting parts and will at the same time be safe from fire and explosion and safe to work with.
    • Solution to the Technical Problem
  • The technical problem is solved by a device for crushing a material comprising:
    • steel housing with a material inlet opening and a material outlet opening,
    • chain conveyor arranged through said steel housing provided to supply large pieces of material into the device for crushing a material and to convey away crushed pieces of material from the device for crushing a material,
    • hollow crusher roller that is pivotably supported by bearings in the steel housing and closed at one side in a fixed manner and at the other by a detachable cover, and provided at its external circumference with a plurality of crushing blades for crushing the material,
    • electric motor arranged in the interior of the crusher roller and detachably fastened on the cover of the crusher roller and having a drive shaft with a pinion,
    • planetary gear that engages with the pinion, wherein the planetary gear further comprises:
      • annular gear with internal toothing that is separately connected with the crusher roller,
      • sun gear that engages with its internal toothing with the pinion,
      • plurality of planetary gears, preferably four planetary gears, which are arranged on a support of planetary gears and engage on the one hand with the sun gear and with the annular gear with internal toothing of the crusher roller on the other,
    • control unit for controlling the drive of the device for crushing a material.
  • Rotational movement is transferred from the drive shaft with a pinion to the sun gear and from there to planetary gears and further to the crusher roller with the annular gear with internal toothing.
  • The control unit comprises a relay circuit and at least one temperature sensor that electrically protect the electric motor against overheating in case of overload. The temperature sensor disconnects the drive electric motor at a pre-determined temperature by means of the relay circuit. Said at least one temperature sensor is arranged in a head of electric winding of the electric motor and/or in a bearing casing of the drive and/or output shaft of the electric motor and/or in a water cooled casing of the electric motor.
  • Apart from electric protection of the device for crushing a material mechanical protection of the device is foreseen as well. Mechanical protection protects the device in case of pulse overload The drive shaft of the electric motor is formed with weakened area, such that it gets ruptured in case of overload and the crusher roller immediately loses driving power. Potential destruction of other constructional parts of the device for crushing a material is herewith prevented. Overload occurs when a material of higher hardness gets under the crusher blades and impulse occurs.
  • The control unit further comprises at least one sensor for detecting rotation of the crusher roller. In case the drive shaft gets ruptured, the sensor disconnects the electric motor.
  • In case of rupture of the drive shaft, the cover closing one of the sides of the crusher roller is dismounted together with the electric motor and the drive shaft. The ruptured drive shaft is replaced by a new one and mounted back into the crusher roller.
  • The device for crushing a material further comprises:
    • a water supply pipe with at least one sprayer nozzle for spraying water, the nozzle being arranged over the crusher roller and foreseen for cooling crusher blades and reducing dusting while material is crushed,
    • screen elements, especially chains, arranged in the area of the inlet opening of the housing and/or outlet opening of the housing that prevent the material from falling from the housing into the ambient of the device for crushing a material upon crushing.
  • The crusher blades are equally distributed on the external surface of the crusher roller alternately in a plurality of first V-shaped rows that comprises at least 3, preferably 5 crusher blades, and a plurality of second V-shaped rows that comprise at least 2, preferably 4 crusher blades, wherein the crusher blades of the second row are arranged such that, when viewed in axial direction of the crusher roller, they are arranged substantially on one half of the axial distance of two adjacent crusher blades of the first row.
  • Without circumventing the essence of the invention, the device of the invention can be adapted to be suitable for crushing other materials, such as stone, concrete, constructional waste material, wood etc. by adequately selecting drive power, gear ratio of gears, shapes of the crusher blades and their arrangement on the outer cover of the crusher roller; the device can also be used in other environments, such as stone quarries, construction sites, etc.
  • Advantages of the device for crushing a material over known devices of this type are a compact geometry of the device devoid of projecting parts, smaller dimensions of the device, smaller device weight, better and easier mobility of the device, good protection of the rotary parts of the device and thus reliable operation of the device, simple assembly and disassembly and maintenance of constructional parts of the drive of the device for crushing a material, electric and mechanical protection of the device against overload, and fire and explosion safe design of the drive of the device.
    • Figure 1: Device for crushing a material in lateral view
    • Figure 2: Device for crushing a material in front view
    • Figure 3: Device for crushing a material in cross-section
    • Figure 4: Planetary gear in cross-section
    • Figure 5: Planetary gear in front view
    • Figure 6: Crusher roller in cross-section
    • Figure 7: Outer cover of the crusher roller with crusher blades arranged
  • The invention will be described in more detail in the continuation by way of an embodiment.
  • A device 1 for crushing a material that comprises:
    • a steel housing 2 with a material inlet opening 3 and a material outlet opening 4,
    • a chain conveyor 5 arranged through said steel housing 2 provided to supply large pieces of material into the device for crushing a material and to convey away crushed pieces of material from the device for crushing a material,
    • a hollow crusher roller 6 that is pivotably supported by bearings in the steel housing 2 and closed at one side in a fixed manner and at the other by a detachable cover 7, and provided at its external circumference with a plurality of crushing blades 8 for crushing the material,
    • electric motor 10 arranged in the interior of the crusher roller and detachably fastened on the cover 7 of the crusher roller and having a drive shaft 11 with a pinion 12,
    • a planetary gear 22 that engages with the pinion 12, wherein the planetary gear 22 further comprises:
      • an annular gear 9 with internal toothing that is separately connected with the crusher roller 6,
      • a sun gear 13 that engages with its internal toothing with the pinion 12,
      • a plurality of planetary gears 14, preferably four planetary gears, which are arranged on a support 19 of planetary gears and engage on the one hand with the sun gear 12 and with the annular gear 9 with internal toothing of the crusher roller on the other,
    • a control unit for controlling the drive of the device for crushing a material.
  • In the embodiment, the pinion has 18 teeth, the sun gear is provided with internal toothing with 18 teeth and with external toothing with 33 teeth, the planetary gears have 53 teeth and the annular gear with internal toothing has 144 teeth.
  • The control unit comprises a relay circuit and at least one temperature sensor. Said at least one temperature sensor is arranged in a head of electric winding of the electric motor and/or in a bearing casing of the drive and/or output shaft of the electric motor and/or in a water cooled casing of the electric motor. In the embodiment, a thermistor with positive temperature coefficient (PTC) is selected as a temperature sensor.
  • The drive shaft of the electric motor is formed with weakened area 15, such that it gets ruptured in case of overload and the crusher roller immediately loses driving power.
  • The drive unit further comprises at least one sensor for detecting rotation of the crusher roller. In case the drive shaft gets ruptured, the sensor disconnects the electric motor. The sensor for detecting rotation of the crusher roller can be an pulse sensor.
  • In case of rupture of the drive shaft 11, the cover 7 closing one of the sides of the crusher roller 6 is dismounted together with the electric motor 10 and the drive shaft 11. The ruptured drive shaft is replaced by a new one and mounted back into the crusher roller.
  • The device for crushing a material further comprises:
    • a water supply pipe 16 with at least one sprayer nozzle 17 for spraying water, the nozzle being arranged over the crusher roller 6 and foreseen for cooling crusher blades 8 and reducing dusting while material is crushed,
    • screen elements 18, especially chains, arranged in the area of the inlet opening 3 of the housing and/or outlet opening 4 of the housing that prevent the material from falling from the housing 2 into the ambient of the device for crushing a material upon crushing.
  • The crusher blades are equally distributed on the external surface of the crusher roller alternately in a plurality of first V-shaped rows 20 that comprises 5 crusher blades, and a plurality of second V-shaped rows 21 that comprises 4 crusher blades, wherein the crusher blades of the second row are arranged such that, when viewed in axial direction of the crusher roller, they are arranged substantially on one half of the axial distance of two adjacent crusher blades of the first row.
  • Without circumventing the essence of the invention, the device of the invention can be adapted to be suitable for crushing other materials, such as stone, concrete, constructional waste material, wood etc. by adequately selecting drive power, gear ratio of gears, shapes of the crusher blades and their arrangement on the outer cover of the crusher roller; the device can also be used in other environments, such as stone quarries, construction sites, etc.

Claims (10)

  1. A device (1) for crushing a material, especially coal, comprising:
    - a steel housing (2) with a material inlet opening (3) and a material outlet opening (4),
    - chain conveyor (5) arranged through said steel housing (2) provided to supply large pieces of material into the device for crushing a material and to convey away crushed pieces of material from the device for crushing a material,
    - a hollow crusher roller (6) that is pivotably supported by bearings in the steel housing (2) and closed at one side in a fixed manner and at the other by a detachable cover (7), and provided at its external circumference with a plurality of crushing blades (8) for crushing the material,
    - an electric motor (10) having a drive shaft (11) with a pinion (12) and
    - a control unit for controlling the drive of the device for crushing a material, characterized in that it further comprises
    - a planetary gear (22) that engages with the pinion (12), wherein the electric motor (10) detachably fastened on the cover (7) of the crusher roller and the planetary gear (22) are arranged in the interior of the crusher roller (6).
  2. Device (1) for crushing a material according to claim 1 characterized in that the planetary gear (22) further comprises:
    - an annular gear (9) with internal toothing that is separately connected with the crusher roller (6),
    - a sun gear (13) that engages with its internal toothing with the pinion (12),
    - a plurality of planetary gears (14), preferably four planetary gears, which are arranged on a support (19) of planetary gears and engage on the one hand with the sun gear (12) and with the annular gear (9) with internal toothing of the crusher roller on the other.
  3. Device (1) for crushing a material according to claims 1 and 2 characterized in that the drive shaft (11) of the electric motor is formed with weakened area (15).
  4. Device (1) for crushing a material according to any of preceding claims characterized in that the control unit comprises a relay circuit and at least one temperature sensor.
  5. Device (1) for crushing a material according to claim 4 characterized in that said at least one temperature sensor is arranged in a head of electric winding of the electric motor (10) and/or in a bearing casing of the drive and/or output shaft of the electric motor (10) and/or in a water cooled casing of the electric motor (10).
  6. Device (1) for crushing a material according to any of preceding claims characterized in that the control unit comprises at least one sensor for detecting rotation of the crusher roller.
  7. Device (1) for crushing a material according to claim 6 characterized in that the sensor for detecting rotation of the crusher roller is a pulse sensor.
  8. Device (1) for crushing a material according to any of preceding claims characterized in that it further comprises:
    - a water supply pipe (16) with at least one sprayer nozzle (17) for spraying water, the nozzle being arranged over the crusher roller (6), for cooling crusher blades (8) and reducing dusting while material is crushed.
  9. Device (1) for crushing a material according to any of preceding claims characterized in that it further comprises:
    - screen elements (18), especially chains, arranged in the area of the inlet opening (3) of the housing and/or outlet opening (4) of the housing that prevent the material from falling from the housing (2) into the ambient of the device for crushing a material upon crushing.
  10. Device (1) for crushing a material according to any of preceding claims characterized in that the crusher blades (8) are equally distributed on the external surface of the crusher roller (6) alternately in a plurality of first V-shaped rows (20) that comprises at least 3, preferably 5 crusher blades, and a plurality of second V-shaped rows (21) that comprises at least 2, preferably 4 crusher blades, wherein the crusher blades of the second row (21) are arranged such that, when viewed in axial direction of the crusher roller, they are arranged substantially on one half of the axial distance of two adjacent crusher blades of the first row (20).
EP14000980.4A 2013-03-18 2014-03-17 Device for crushing a material Withdrawn EP2781266A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SI201300065A SI24306A (en) 2013-03-18 2013-03-18 Device for grinding of material

Publications (1)

Publication Number Publication Date
EP2781266A1 true EP2781266A1 (en) 2014-09-24

Family

ID=50342130

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14000980.4A Withdrawn EP2781266A1 (en) 2013-03-18 2014-03-17 Device for crushing a material

Country Status (2)

Country Link
EP (1) EP2781266A1 (en)
SI (1) SI24306A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104475197A (en) * 2014-10-09 2015-04-01 苏州可纳粉体技术有限公司 A multiple-dispersion-disk double-shaft vertical turbine grinding and dispersing machine
CN104984789A (en) * 2015-06-01 2015-10-21 陈韧坚 Planet flour mill
CN105396646A (en) * 2015-11-13 2016-03-16 太仓澄天机械有限公司 Coal briquette breaking mechanical device
CN107597351A (en) * 2017-09-28 2018-01-19 碎得机械(北京)有限公司 A kind of new type crushing machine
CN108187812A (en) * 2018-01-25 2018-06-22 宁夏天地奔牛实业集团有限公司 Built-in hydraulic motor drives crushing toothed roller
CN109926185A (en) * 2019-04-16 2019-06-25 太原市欣天力机电技术有限公司 A kind of two-stage crushing roller arrangement for crusher
CN110882822A (en) * 2020-01-08 2020-03-17 叶美华 Ore crusher
CN112791824A (en) * 2020-12-17 2021-05-14 王�锋 Bulk alloy preparation system
CN117101840A (en) * 2023-10-23 2023-11-24 黑龙江省宝泉岭农垦溢祥石墨有限公司 Wet-type roller mill device for protecting graphite flake

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB922986A (en) 1958-11-15 1963-04-03 Adele Oellrich Improvements in or relating to pass-through coal breakers
GB1059694A (en) * 1965-04-29 1967-02-22 Mining Engineering Company Mec Means for crushing large coal on a conveyor
US4103832A (en) * 1976-05-25 1978-08-01 Halbach And Braun Crusher having rotatable arms with striker tools and liquid spray means
WO1992016296A1 (en) * 1991-03-13 1992-10-01 T.J. Gundlach Machine Company Traversing roll breaker apparatus
DE202008017994U1 (en) * 2008-08-22 2011-03-24 Maag Gear Ag Heavy duty drive assembly and driven mill

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB922986A (en) 1958-11-15 1963-04-03 Adele Oellrich Improvements in or relating to pass-through coal breakers
GB1059694A (en) * 1965-04-29 1967-02-22 Mining Engineering Company Mec Means for crushing large coal on a conveyor
US4103832A (en) * 1976-05-25 1978-08-01 Halbach And Braun Crusher having rotatable arms with striker tools and liquid spray means
WO1992016296A1 (en) * 1991-03-13 1992-10-01 T.J. Gundlach Machine Company Traversing roll breaker apparatus
DE202008017994U1 (en) * 2008-08-22 2011-03-24 Maag Gear Ag Heavy duty drive assembly and driven mill

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104475197A (en) * 2014-10-09 2015-04-01 苏州可纳粉体技术有限公司 A multiple-dispersion-disk double-shaft vertical turbine grinding and dispersing machine
CN104984789A (en) * 2015-06-01 2015-10-21 陈韧坚 Planet flour mill
CN105396646A (en) * 2015-11-13 2016-03-16 太仓澄天机械有限公司 Coal briquette breaking mechanical device
CN107597351A (en) * 2017-09-28 2018-01-19 碎得机械(北京)有限公司 A kind of new type crushing machine
CN107597351B (en) * 2017-09-28 2024-02-06 碎得机械(北京)有限公司 Crusher
CN108187812A (en) * 2018-01-25 2018-06-22 宁夏天地奔牛实业集团有限公司 Built-in hydraulic motor drives crushing toothed roller
CN108187812B (en) * 2018-01-25 2024-01-26 宁夏天地奔牛实业集团有限公司 Built-in hydraulic motor driven crushing tooth roller
CN109926185B (en) * 2019-04-16 2023-10-20 太原市欣天力机电技术有限公司 A two-stage crushing roller device for breaker
CN109926185A (en) * 2019-04-16 2019-06-25 太原市欣天力机电技术有限公司 A kind of two-stage crushing roller arrangement for crusher
CN110882822A (en) * 2020-01-08 2020-03-17 叶美华 Ore crusher
CN112791824B (en) * 2020-12-17 2022-07-26 赣州海盛硬质合金有限公司 Bulk alloy preparation system
CN112791824A (en) * 2020-12-17 2021-05-14 王�锋 Bulk alloy preparation system
CN117101840A (en) * 2023-10-23 2023-11-24 黑龙江省宝泉岭农垦溢祥石墨有限公司 Wet-type roller mill device for protecting graphite flake
CN117101840B (en) * 2023-10-23 2024-01-12 黑龙江省宝泉岭农垦溢祥石墨有限公司 Wet-type roller mill device for protecting graphite flake

Also Published As

Publication number Publication date
SI24306A (en) 2014-09-30

Similar Documents

Publication Publication Date Title
EP2781266A1 (en) Device for crushing a material
CA2661476C (en) Method and apparatus for the milling cutting of materials
KR20160107594A (en) Crushing apparatus for wastes
CA2247803C (en) Collider
BR112021003735A2 (en) monoroll mill
EP3233285B1 (en) Multi-drive crusher
US20060049291A1 (en) Blade system for a shredding apparatus
WO2019175450A1 (en) Movable shredder for metallic materials, with improved safety
JP2017060921A (en) Metal chip breaking transporter
US5478139A (en) Mobile digging/cutting system
EP2585219B1 (en) A crusher bucket
ES2870523T3 (en) A debris shredder
CN107138229B (en) Straight marking cavity angular rotation crusher
CN211366308U (en) Novel bidirectional distributing device
CN212189424U (en) Double-shaft crusher
RU2545653C1 (en) Rotary crusher
CN215389813U (en) Crushing device
CN107377189A (en) A kind of disintegrating machine with transmission belt fracture detection function
RU2539518C1 (en) Material crushing unit
CN220861556U (en) Jaw crusher for quarries
CN210522665U (en) Ball mill
CN107763631A (en) A kind of crop straw burning utilizes machine
RU51529U1 (en) PROTECTION DEVICE FOR CONE CRUSHER
RU2496581C1 (en) Mill
RU134825U1 (en) MATERIAL GRINDER

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20140317

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20150325