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
  • B02C4/00—Crushing or disintegrating by roller mills
  • B02C4/28—Details
  • B02C4/32—Adjusting, applying pressure to, or controlling the distance between, milling members
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B30—PRESSES
  • B30B—PRESSES IN GENERAL
  • B30B3/00—Presses characterised by the use of rotary pressing members, e.g. rollers, rings, discs
  • B30B3/04—Presses characterised by the use of rotary pressing members, e.g. rollers, rings, discs co-operating with one another, e.g. with co-operating cones

Definitions

• the invention relates to a roller press for crushing granular material with two rotatably mounted in a machine frame, driven in opposite directions and forming a nip between them grinding rollers.
• Roller presses of this type are used, in particular, in the mineral area for the comminution of granular material, for example limestone, dolomite, cement clinker or ore.
• the grinding rolls are subjected to crushing operation with pressures of up to 50 MPa and more, so that the roll surfaces are subjected to enormous wear.
• one of the two grinding rollers is formed during comminution as compared to the machine frame fixedly arranged hard roller and the other grinding roller as a transverse to the nip (horizontal) movable Loswalze.
• the fixed roller is mounted in fixed bearing blocks and is supported on the machine frame, while the Loswalze is held in loose bearing blocks in the machine frame.
• the crushing pressure is transmitted to the loose roller via hydraulic cylinders supporting the machine frame, wherein a predetermined nip is maintained via spacers.
• the invention is based on the object to propose a new concept for a roller press that is characterized by longer life and / or increased throughputs.
• the roller press according to the invention for crushing granular material has two rotatably mounted in a machine frame, counter-rotating and forming a nip between them grinding rollers, wherein one of the two grinding rollers during comminution as compared to the machine frame fixedly arranged hard roller and the other grinding roller as transverse to the nip movable Loswalze is formed.
• the hard roll is positionable transversely to the nip at at least two different positions on the machine frame.
• the hard roller is rotatably mounted in two fixed bearing blocks and the Loswalze in two loose bearing stones
• the fixed bearing blocks and the floating bearing blocks are connected to the upper and lower frame parts of the machine frame.
• the loose bearing stones are at the top and slidably guided lower frame parts of the machine frame and are based on hydraulic cylinders on the first side parts of the machine frame from.
• the fixed bearing blocks are also displaceably guided on the upper and lower frame parts of the machine frame and can be fixed in at least two different positions on the upper and lower frame parts of the machine frame.
• the fixed bearing stones can be positively, positively or by a combination of both types of connection to the upper and lower frame parts of the machine frame connected.
• the fixation of the fixed bearing blocks can be done for example by fastening means, in particular screws.
• the fixed bearing blocks for example, first grooves and the upper and lower frame parts each have second grooves, wherein the first and second grooves are aligned with each other in a first position of the fixed bearing blocks for receiving the feather key.
• the fixed bearing blocks may further comprise at least third grooves, which are aligned in a second position of the fixed bearing blocks with the second grooves of the upper and lower frame parts for receiving the feather key.
• the fixed bearing blocks first grooves and the upper and lower frame parts each have second grooves, wherein the first and second grooves in a first position of the bearing blocks for receiving the feather key aligned and wherein the upper and lower frame parts at least fourth Have grooves that are aligned in a second position of the fixed bearing blocks with the first grooves of the bearing blocks for receiving the feather key.
• the fixed bearing blocks can also be supported on second side parts of the machine frame, wherein spacers are provided for positioning the fixed bearing blocks between the fixed bearing blocks and the second side parts.
• This variant allows a faster positioning of the fixed bearing blocks, but you have to accept a machine frame that has been extended by the second side parts.
• adjustable cylinders are provided between the fixed bearing blocks and the second side parts for positioning the fixed bearing blocks instead of the spacers.
• This allows a special fast and above all stepless repositioning of the fixed bearing blocks by the cylinders, for example, hydraulically, pneumatically, electrically or mechanically adjusted. While the embodiments with the feather keys and the spacers allow adjustment of the fixed bearing blocks only during a short stoppage of the roller press, a repositioning of fixed bearing blocks with adjustable cylinders would be conceivable during the crushing operation.
• FIG. 1 is a schematic side view of a roller press according to a first embodiment
• FIG. 2 is a schematic plan view of the roller press according to FIG. 1,
• Fig. 3 is a schematic side view of a roller press according to a second embodiment
• Fig. 4 is a schematic side view of a roller press according to a third embodiment.
• the roller press shown in Figures 1 and 2 for crushing granular material has two rotatably mounted in a machine frame 1, counter-rotating and forming a nip between two grinding rollers, the one grinding roller during comminution as compared to the machine frame 1 fixedly arranged hard roller 3 and the other grinding roller as transverse to the nip 2 movable Loswalze 4 is formed.
• the fixed roller 3 is rotatably mounted in two fixed bearing stones 5, 6 about a roller axis 3 a and the Loswalze 4 in two loose bearing stones 7, 8 about a roll axis 4a, wherein the fixed bearing blocks and the loose bearing blocks with upper and lower frame parts 9, 10 of the machine frame 1 are connected.
• the loose bearing stones 7, 8 are guided displaceably on the upper and lower frame parts 9, 10 and are supported via hydraulic cylinders 11 on first side parts 12, 13 of the machine frame 1. About the hydraulic cylinder 11, the crushing pressure of up to 50 MPa and more is generated. The nip 2 is maintained by spacers, not shown. The supply of the material to be shredded takes place from above via a feed chute, not shown.
• the fixed bearing blocks 5, 6 are fixed to the upper and lower frame parts 9, 10 via schematically indicated fastening means 14, for example screws.
• at least one feather key 15, 16 is respectively provided between the fixed bearing blocks 5, 6 and the upper and lower frame parts 9, 10.
• second grooves 19, 20 are provided in the fixed bearing blocks 5, 6 in the area of contact with the frame parts, and the first and second grooves in the illustrated first position of the fixed bearing blocks 5, 6 for Recording the feather keys 15, 16 aligned.
• the fixed bearing blocks 5, 6 also have at least third grooves 21, 22 and 23, 24, which after a displacement of the fixed bearing blocks 5, 6 in the direction of the loose bearing stones 7, 8 with the second grooves 19, 20 of the upper and lower frame parts. 9 , 10 are aligned to accommodate the feather keys.
• the hard roll can be positioned transversely to the nip at three different positions on the machine frame 1. This allows for longer operation of the roller press until the next maintenance. A horizontal displacement of the hard roller in a new position on the machine frame is then carried out when the range of motion of the hydraulic cylinder 11 is no longer sufficient due to the wear of the grinding rollers.
• third grooves 21 to 24 may alternatively or additionally corresponding fourth grooves (not shown) in the upper and lower frame members 9, 10 are provided, which then cooperate with the first grooves 17, 18 in the fixed bearing block for different positions of the bearing blocks.
• Fig. 3 shows a second embodiment of the invention in which the fixed bearing blocks 5, 6 are supported on second side parts 25 of the machine frame 1 and 25 spacers 26 are provided for positioning the fixed bearing blocks 5, 6 between the fixed bearing blocks and the second side parts.
• spacers 26 By thicker spacers or a larger number of the distance between the roll axes 3 a, 4 a can be adjusted accordingly.
• a repositioning of the fixed bearing blocks can be realized very quickly and easily by this design. However, a correspondingly extended machine frame must be accepted.
• FIG. 4 An even simpler change in position of the fixed bearing blocks is shown in FIG. 4.
• the fixed bearing blocks 5, 6 are again supported on second side parts 25 of the machine frame.
• adjustable cylinders 27 are provided between the fixed bearing blocks 5, 6 and the second side parts, which are in particular hydraulically, pneumatically, electrically or mechanically controllable.

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• Engineering & Computer Science (AREA)
• Food Science & Technology (AREA)
• Mechanical Engineering (AREA)
• Crushing And Grinding (AREA)
• Press Drives And Press Lines (AREA)

Priority Applications (2)

Applications Claiming Priority (2)

Publications (1)

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Family Applications (1)

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Cited By (1)

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Citations (5)

Family Cites Families (1)

• 2014
  • 2014-03-24 DE DE102014104038.4A patent/DE102014104038B4/de active Active
• 2015
  • 2015-03-20 WO PCT/EP2015/055944 patent/WO2015144586A1/de active Application Filing
  • 2015-03-20 AU AU2015238518A patent/AU2015238518B2/en active Active
  • 2015-03-20 PE PE2016001620A patent/PE20161483A1/es unknown
  • 2015-03-20 BR BR112016021414-5A patent/BR112016021414B1/pt active IP Right Grant
• 2016
  • 2016-09-15 CL CL2016002320A patent/CL2016002320A1/es unknown

Patent Citations (5)

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