EP3325162A1 - Rotor for an impact crusher - Google Patents
Rotor for an impact crusherInfo
- Publication number
- EP3325162A1 EP3325162A1 EP16733364.0A EP16733364A EP3325162A1 EP 3325162 A1 EP3325162 A1 EP 3325162A1 EP 16733364 A EP16733364 A EP 16733364A EP 3325162 A1 EP3325162 A1 EP 3325162A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- guide
- rotor
- guide frame
- radial direction
- movement
- 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
- B02C13/28—Shape or construction of beater elements
- B02C13/2804—Shape or construction of beater elements the beater elements being rigidly connected to the rotor
-
- 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
- B02C2013/29—Details devices for manipulating beater elements
Definitions
- the invention relates to a rotor of an impact crusher.
- a rotor of an impact crusher For crushing materials such as limestone, marl, clay, building rubble or similar mineral materials usually impact crushers are used.
- Known impact crushers have a rotor with uniformly spaced blow bars.
- the rotor cooperates with a second oppositely rotating rotor or baffles arranged laterally of the rotor to comminute the material.
- blow bars are in each case hydraulically jammed in a recess in the crushing roller body, for example.
- the blow bars of such an impact crusher are subject to high wear and require regular maintenance.
- the blow bar known impact crusher is either completely replaced or rotated, so that the opposite end of the blow bar is exposed to wear.
- Such an impact crusher is known for example from DE 3521588 AI.
- blow bars The replacement of the blow bars is very time consuming and requires high downtime of the impact crusher. Furthermore, the product quality deteriorates with progressive wear of the blow bars.
- a rotor comprises a crushing roller body and at least one receiving device mounted on the crushing roller body for receiving a blow bar
- the receiving device has a guide frame and at least one guide element which is connected to the blow bar and is movably mounted on the guide frame in such a way that a Movement of the guide element in the radial direction relative to the Guide frame results in a movement of the blow bar in the radial direction relative to the crushing roller body, wherein the guide member is arranged movable in the axial direction relative to the blow bar.
- the crushing roller body is designed substantially cylindrical and rotates during operation of the impact crusher about its central axis.
- the impact crusher preferably has a plurality of blow bars, which are mounted circumferentially at an equal distance from each other on the crushing roller body.
- each of the blow bars is mounted in each case in a receiving device.
- the crushing roller body of the impact crusher on the one hand has the function of receiving the blow bars and on the other to transfer the moment from the rotor shaft extending through the crushing roller body to the blow bars in order to apply the necessary refractive power.
- the blow bars are arranged in a respective recess in the crushing roller body, protruding beyond the outer circumference of the crushing roller body at a predetermined height.
- the guide frame is preferably configured substantially box-shaped and serves to guide the at least one guide element along a predetermined plane.
- the blow bar is preferably mounted on the guide frame on the guide frame, so that the blow bar by means of the guide element in the radial direction, based on the crushing roller body, is movable.
- a radial movement of the guide element causes a radial movement of the blow bar, wherein an axial movement of the guide element is decoupled from the blow bar.
- the guide element is movable in the axial direction relative to the blow bar and causes no adjustment of the blow bar in the axial direction.
- a movement of the blow bar in the radial direction allows adjustment of the position of the blow bar depending on the wear of the blow bar, so that the blow bar protrudes at the predetermined height on the outer periphery of the crushing roller body.
- a movement of the guide element relative to the guide frame results in a continuous, stepless movement of the blow bar in the radial direction relative to the crushing roller body.
- a continuous mobility of the blow bar in the radial direction allows accurate radial positioning of the blow bars depending on, for example, the state of wear or the nature of the material to be shredded. This ensures a consistent product quality that does not deteriorate with increasing wear of the blow bars.
- the downtime of the impact crusher is reduced, since an exchange of the blow bars is necessary only at an almost complete wear of the blow bar.
- the crushing roller body has a recess in which the receiving device is received and releasably connected to the crushing roller body.
- the receiving device is completely received in the recess of the crushing roller, so that the receiving device does not stand out of the crushing roller body. This allows optimum absorption of the blow bar in the receiving device, wherein wear of the receiving device is avoided.
- the guide element is formed according to a further embodiment substantially wedge-shaped.
- the radially outwardly facing side surface of the guide element has in particular an angle of inclination of about 5-30 °, in particular 10.5 ° to the axial.
- the side surface facing in the direction of the guide frame has an angle of inclination of approximately 10 to 30 °, in particular 14 °.
- the receiving device has, according to a further embodiment, a first threaded spindle, via which the guide element is attached to the guide frame.
- the guide element has a threaded bore which extends in the axial direction through the guide element and through which the threaded spindle extends. Thereby, a movement of the guide element within the guide frame is made possible in a simple manner.
- the threaded spindle preferably extends in the axial direction through the guide frame.
- the receiving device has a bracing element which is mounted movably in the guide frame such that a movement of the bracing element in the radial direction results in a movement of the guide element in the radial direction.
- the bracing element is in particular arranged below, radially inwardly of the guide element and arranged movable such that it moves the guide element in the radial direction.
- the bracing element is arranged to be movable relative to the guide element, in particular in the axial direction, so that an axial movement of the bracing element does not cause any axial movement of the guide element.
- the bracing member is movably mounted in the guide frame so as to be movable to a blocking position in which it prevents movement of the guide member in the radial direction.
- the bracing element lies against the guide element, in particular with its radially outwardly facing surface, wherein the guide element rests on the guide frame in such a way that movement in the radial direction is prevented.
- the bracing element is movable parallel to the direction of movement of the guide element.
- the bracing element is attached according to a further embodiment by means of a second threaded spindle on the guide frame.
- the second threaded spindle extends in particular parallel to the first threaded spindle and allows movement of the clamping element.
- the bracing element is formed according to a further embodiment substantially wedge-shaped.
- the radially inwardly facing surface of the clamping element is aligned at an angle of about 5-30 °, in particular 10.5 ° to the axial.
- the guide element has according to a further embodiment, in particular a trapezoidal projection.
- the projection extends along the entire length of the guide member in the axial direction.
- the blow bar has according to a further embodiment, in particular a trapezoidal groove which extends in the axial direction and is in engagement with the projection of the guide element.
- a trapezoidal groove which extends in the axial direction and is in engagement with the projection of the guide element.
- a groove extending in the axial direction allows movement of the guide element in the axial direction relative to the impact strip within the groove.
- the projection and the groove have a rectangular or round shape.
- at least one of the first and the second threaded spindle has a first region with a right-hand thread and a second region with a left-hand thread.
- a guide element or a clamping element is arranged on the first and the second region, wherein the guide elements and Verspannetti move in a rotation of the threaded spindle in opposite directions.
- a spring element is arranged between the first region and the second region. A spring element prevents the loss of the bias of the threaded spindle during rotation, wherein the guide elements arranged on the threaded spindle move in opposite directions.
- the spring element has, for example, a sleeve within which a spring, such as helical compression spring or a plurality of disc springs is arranged.
- the sleeve is in particular non-rotatably connected to the first and the second region of the threaded spindle, so that a relative rotation between the sleeve and the threaded spindle is prevented while allowing movement of the first region relative to the second region in the axial direction.
- Such an arrangement further allows a bias of the first region to the second region of the threaded spindle.
- the first threaded spindle and the second threaded spindle are mounted according to a further embodiment in such a way in the guide frame, that they are movable in the radial direction.
- the guide frame has a slot hole which extends in the radial direction, and in which the first and the second threaded spindle are arranged.
- a movement of the threaded spindles in the radial direction allows a movement of the guide element along the threaded spindle in the axial direction with a simultaneous movement in the radial direction.
- Two guide elements are mounted on the first threaded spindle according to a further embodiment, wherein two clamping elements are attached to the second threaded spindle.
- the two guide elements are each connected to the blow bar, positively in the radial direction, and allow a uniform guidance of the blow bar in the radial direction.
- the bracing serve the fixation and displacement of each one guide element in the radial direction inwards.
- the guide frame has, according to a further embodiment, a guide surface for guiding a respective guide element.
- the guide surface for guiding a guide element is arranged in particular at an angle of about 5-30 °, in particular 14 ° to the radial.
- the guide surface is preferably formed such that it interacts with the pointing in the direction of the receiving device side surface of the guide element, and the guide element along a plane which extends in particular at an angle of about 5-30 °, in particular 10.5 ° to the axial, leads.
- An additional inclination of the guide surface at an angle to the radial makes it possible to act on the impact strip with a substantially circumferential force, so that the impact strip is pressed by the guide element against the recess in the crushing
- the guide frame has according to a further embodiment, a guide surface for guiding a respective Verspannelements.
- the guide surface for guiding the Verspannelements at an angle of about 5-30 °, in particular the, 10.5 ° to the axial.
- the guide surface is preferably formed such that it cooperates with the radially inwardly facing surface of the Verspannelements, so that an optimal guidance of the Verspannelements is made possible.
- Fig. 1 shows a perspective view of a rotor of an impact crusher with a plurality of
- Fig. 2 shows a perspective view of a receiving device with a blow bar according to an embodiment.
- FIG. 3 shows a perspective view of a guide frame according to the exemplary embodiment from FIG. 2.
- FIG. 4 shows a guide element in a perspective view and a front view according to the exemplary embodiment from FIG. 2
- FIG. 5 shows a perspective view of a bracing element according to FIG
- FIG. 6 shows a perspective view of a blow bar according to the exemplary embodiment
- FIG. 7 shows a perspective view of a drive device according to a further exemplary embodiment.
- Fig. 1 shows a rotor 10 of an impact crusher for crushing limestone, marl, clay, building rubble or similar mineral materials.
- the rotor 10 includes an im
- Substantially cylindrical crushing roller body 12 having a central axial bore 14 for receiving a shaft, not shown, for driving the crushing roller body.
- the rotor 10 rotates in the direction of the arrow, the impact strips 18 cooperating, for example, with another oppositely rotating rotor (not shown in FIG. 1) or with impact elements (not shown) arranged laterally of the rotor 10.
- the crushing roller body 12 has at its outer periphery six axially extending recesses 16, in each of which a blow bar 18 and a
- the substantially plate-shaped impact strips 18 extend in the axial direction over the entire length of the crushing roller body 12, so that they each terminate with the side surfaces of the crushing roller body 12. In the radial direction, the blow bars 18 each extend to about one third of their height beyond the outer periphery of the crushing roller body 12 and extend into the crushing roller body 12 with about two-thirds of their height. The blow bars 18 are over the circumference of
- Each blow bar 18 rests against the receiving device 20 with the side face pointing in the direction of rotation and against the crushing roller body 12 with the opposite side face. Furthermore, at the
- Crushing roller body 12 attachment means 22 attached, which prevent movement of the blow bars 18 in the axial direction.
- the fastening means 22 are preferably on the
- the Blow bar 18 is fixed in the axial direction.
- the receiving device 20 extends in the radial direction along the extending inside the crushing roller body 12 side surface of the respective beater bar 18 and terminates flush with the circumference of the crushing roller body 12 from. In the axial direction, the receiving device 20 extends over the entire length of Crushing roller body 12 axially in the recess 16.
- the receiving device 20 is detachably attached to the crushing roller body 12, for example screwed, so that they in
- FIG. 2 shows a detailed representation of the receiving device 20 of FIG. 1, wherein the
- Blow bar 18 is shown partially cut for the sake of simplicity.
- Receiving device 20 has a guide frame 24 which is substantially box-shaped and has a plurality of guide surfaces. The design of the
- the receiving device further comprises a drive device 36, which has a first
- Threaded spindle 30 and a second threaded spindle 32 has.
- first threaded spindle 30 On the first threaded spindle 30, which is arranged above, in particular in the radial outward direction of the second threaded spindle 32, two guide elements 26 are arranged, wherein two Verspannamine 28 are arranged on the second threaded spindle 32.
- the threaded spindles 30, 32 are in each case by means of fastening elements 38, 40,
- the threaded spindles 30, 32 each have in particular two thread cutting, a right-hand thread and a
- Threaded spindles 30, 32 has a left-hand thread.
- the guide elements 26 are arranged at respectively opposite ends of the threaded spindle 30 and have the same distance to the respective end of the threaded spindle, so that upon rotation of the threaded spindle
- the guide frame 24 shown in Fig. 3 has a rear wall 52 which in the installed in the 35 crushing roller body 12 state of the guide frame 24 on the Crushing roller body 12 is present.
- the guide frame 24 four guide surfaces 44, 46, 48, 50 are formed, on which the guide elements 26 and the bracing elements 28 are guided along.
- the guide surfaces 48 and 50 serve to guide one each
- Verspannelements 26 and V-shaped to each other and at right angles to the rear wall 52 are arranged.
- the guide surfaces 48 and 50 are planar and each extend from the center of the longitudinal side of the guide frame 24 at an inclination angle of about 5-30 °, in particular 10-20 °, preferably 10.5 ° to the axial of the rotor 10 toward the side surfaces of the guide frame 24.
- the guide surfaces 44 and 46 serve to guide a respective guide element 26 and are substantially V-shaped to each other, wherein the guide surfaces 44 and 46 at an angle of about 10-30 °, in particular 12-20 °, preferably 14 ° to the rear wall 52 of the guide frame are arranged.
- the angle of inclination of the guide surfaces 44 and 46 to the axial is about 5-30 °, in particular 10-20 °, preferably 10.5 ° and corresponds to the inclination of the guide surfaces 48 and 50, wherein the guide surfaces 44 and 46 for guiding a respective guide member 26 above , in particular radially outwardly, the guide surfaces 48 and 50 are arranged.
- the guide frame 24 further has an elongated in the radial direction
- Long hole 42 which extends in the longitudinal direction of the guide frame 24, in particular in the axial direction of the crushing roller body 12, through the guide frame 24 and through which the first and second threaded spindle 30, 32 shown in FIG. 2 extend.
- the elongated hole 42 further extends through the guide surfaces 48 and 50th
- An illustrated in Fig. 4 guide member 26 has a substantially wedge-shaped shape, wherein the upward, radially outwardly facing surface at an angle of about 5-30 °, in particular 10 - 20 °, preferably 10.5 ° to the longitudinal axis of the guide element 26th , in particular to the axial of the rotor 10 forms.
- the pointing in the direction of the receiving device 20 side of the guide member 26 has a side surface which extends substantially in the radial direction and a bearing surface 62 which rests against the guide surface 44 of FIG. 3 and is formed according to the angular orientation of the guide surface 44.
- the contact surface 26 forms an angle of about 10-30 °, in particular 12-20 °, preferably 14 ° to the side surface and the radial of the rotor 20.
- the pointing in the direction of the blow bar 18 surface of the guide member 26 has a trapezoidal projection 64 which extends along the lower, radially inward edge of the guide member 26.
- the trapezoidal projection 64 serves the positive connection of the guide member 26 with the beater bar 18.
- a threaded bore 54 for receiving the first threaded spindle 30.
- a voltage applied to the guide surface 46 guide member 26 has a symmetrical structure to that shown in FIG. 4 guide member 26.
- the contact surface 56 is substantially planar and has an angle of about 5-30 °, in particular 10-20 °, preferably 10.5 ° to the axial. In the longitudinal direction through the tensioning element 28 extends a
- Threaded bore 58 for receiving the second threaded spindle 32.
- the upper, radially outwardly facing surface of the Verspannelements 28 abuts in the installed state in the guide frame 24 on the lower radially inwardly facing surface of the guide member 26 at.
- a clamping element resting against the guide surface 50 has a symmetrical construction with respect to the clamping element 28 shown in FIG. 4.
- FIG. 6 shows a blow bar 18, which has a trapezoidal groove 34 on the side surface facing the receiving device in the installed state.
- the groove 34 extends in
- the longitudinal direction of the blow bar 18 along the lower, radially inwardly facing edge and serves to connect the blow bar 18 with the guide elements 26.
- the trapezoidal groove 34 of the blow bar 18 cooperates in the installed state shown in Fig. 2 with the trapezoidal projection 34 of the guide elements 26 together , So that the
- the blow bar 18 further comprises a baffle 60 which is disposed at the radially outward end portion of the side surface and, for example, has a wear-resistant coating, not shown here.
- Fig. 7 shows a section of a drive device 36, wherein by way of example only one threaded spindle 30 is shown.
- the threaded spindle 30 has a first portion 66 and a second portion 68, which have different thread cutting.
- the first section 66 has a right-hand thread and the second section 68 has a left-hand thread.
- a spring element 70 is arranged, which has a sleeve in which a spring, for example a helical compression spring or a plurality of disc springs are arranged.
- the sleeve is connected to the first portion 66 and the second portion 68 of the threaded spindle such that an axial movement of the portions 66, 68 is possible, a rotation of the portions 66, 68 relative to each other but prevented.
- the pointing to the center of the threaded spindle 30 ends of the portions 66, 68 preferably have an external hex, which cooperates with a socket formed in the sleeve, thus preventing relative rotation of the 5 sections 66, 68 to each other and relative movement of the sections in the axial direction is enabled to each other.
- the spring element ensures, for example, a bias between the sections 66 and 68 and thus prevents a distortion of the
- the first threaded spindles 30 is rotated, so that the guide elements 26 move along the threaded spindle 30 in the axial direction outwards.
- the different thread cutting the threaded spindle ensure that the guide elements 26 move opposite to each other.
- Trapezoidal groove 34 includes the blow bar, allows sliding of the guide elements 26 in the axial direction along the groove 34 so that the blow bar 18 moves in the radial direction with the guide elements 26, but not in the axial direction.
- the second threaded spindle 32 is rotated, so that the Verspannement
- Clamping elements are in the blocking position radially inwardly of a respective guide element
- the drive of the threaded spindles 30, 32 is realized, for example, manually or via an external drive device, such as a hydraulic motor or an electric motor.
- blow bars in the radial direction so that an exchange of the entire blow bar 18 must be made only at a very high wear and the height of the blow bar 18 can be adapted at any time to each material to be crushed material properties.
- the arrangement allows a continuous, continuous movement of the blow bar in the radial direction, whereby a precise positioning of the blow bar is possible. This allows a considerable time savings in the case of wear of the blow bars and prevents long Downtime of the impact crusher.
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Crushing And Pulverization Processes (AREA)
- Crushing And Grinding (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102015213958.1A DE102015213958A1 (en) | 2015-07-23 | 2015-07-23 | Rotor for an impact crusher |
PCT/EP2016/064283 WO2017012809A1 (en) | 2015-07-23 | 2016-06-21 | Rotor for an impact crusher |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3325162A1 true EP3325162A1 (en) | 2018-05-30 |
EP3325162B1 EP3325162B1 (en) | 2019-08-07 |
Family
ID=56292680
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16733364.0A Active EP3325162B1 (en) | 2015-07-23 | 2016-06-21 | Rotor for an impact crusher |
Country Status (5)
Country | Link |
---|---|
US (1) | US20180200721A1 (en) |
EP (1) | EP3325162B1 (en) |
CN (1) | CN107810064A (en) |
DE (1) | DE102015213958A1 (en) |
WO (1) | WO2017012809A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3556467A1 (en) * | 2018-04-16 | 2019-10-23 | Omya International AG | Hybrid disc |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB559345A (en) * | 1942-12-22 | 1944-02-15 | Nordberg Manufacturing Co | Improvements in or relating to impact members and impact crushers employing such members |
DE3334783A1 (en) * | 1982-09-28 | 1984-03-29 | Pallmann Maschinenfabrik GmbH & Co KG, 6660 Zweibrücken | Mounting for adjustable impact plates on impact rotors of comminuting machines |
DE3521588A1 (en) | 1985-06-15 | 1986-12-18 | O & K Orenstein & Koppel Ag, 1000 Berlin | DEVICE FOR DETERMINING BLOWERS IN IMPACT MILL ROTORS |
CN2414838Y (en) * | 2000-03-28 | 2001-01-17 | 朱广礼 | Impact crusher |
US6845933B2 (en) * | 2002-01-09 | 2005-01-25 | Cedarapids, Inc. | Impeller bar retaining wedge assembly and rotor employing the same |
-
2015
- 2015-07-23 DE DE102015213958.1A patent/DE102015213958A1/en not_active Ceased
-
2016
- 2016-06-21 EP EP16733364.0A patent/EP3325162B1/en active Active
- 2016-06-21 CN CN201680037687.3A patent/CN107810064A/en active Pending
- 2016-06-21 US US15/743,378 patent/US20180200721A1/en not_active Abandoned
- 2016-06-21 WO PCT/EP2016/064283 patent/WO2017012809A1/en active Application Filing
Also Published As
Publication number | Publication date |
---|---|
EP3325162B1 (en) | 2019-08-07 |
WO2017012809A1 (en) | 2017-01-26 |
CN107810064A (en) | 2018-03-16 |
US20180200721A1 (en) | 2018-07-19 |
DE102015213958A1 (en) | 2017-01-26 |
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