WO2015109354A2 - Mécanisme de positionnement pour broyeurs à cylindres - Google Patents

Mécanisme de positionnement pour broyeurs à cylindres Download PDF

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Publication number
WO2015109354A2
WO2015109354A2 PCT/AT2015/050022 AT2015050022W WO2015109354A2 WO 2015109354 A2 WO2015109354 A2 WO 2015109354A2 AT 2015050022 W AT2015050022 W AT 2015050022W WO 2015109354 A2 WO2015109354 A2 WO 2015109354A2
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WO
WIPO (PCT)
Prior art keywords
roller
roll mill
dry ice
mill according
adjusting device
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.)
Ceased
Application number
PCT/AT2015/050022
Other languages
German (de)
English (en)
Other versions
WO2015109354A3 (fr
Inventor
Christian Georg HOECKENREINER
Dietrich Kreuzgruber
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.)
Feiba Engineering and Plants GmbH
Original Assignee
Feiba Engineering and Plants GmbH
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
Priority claimed from ATA50049/2014A external-priority patent/AT515361A1/de
Priority claimed from ATA50050/2014A external-priority patent/AT515362A1/de
Application filed by Feiba Engineering and Plants GmbH filed Critical Feiba Engineering and Plants GmbH
Priority to EP15712246.6A priority Critical patent/EP3099414A2/fr
Publication of WO2015109354A2 publication Critical patent/WO2015109354A2/fr
Publication of WO2015109354A3 publication Critical patent/WO2015109354A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
    • B24C1/003—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods using material which dissolves or changes phase after the treatment, e.g. ice, CO2

Definitions

  • the invention relates to an actuating mechanism for roll mills.
  • Roller mills or functionally similar mills are also referred to in the literature as roller mill, roll crusher, high-bed roller mill (also known as roller press), crusher, roller crusher or roller mill.
  • the device according to the invention can be used in all crushers and mills, which comprise at least one rotatable roller which is driven by a drive, wherein the rotatable roller with a spaced second roller or a surface (crushing bar) forms a grinding gap, said grinding gap passes from the material to be ground is and this is comminuted depending on the width of the grinding gap.
  • both rollers can be driven.
  • the millbase is fed to the roll mill usually from above.
  • the direction of rotation of the one or two driven rollers is such that the grinding material abutting above is moved into the grinding gap. In the case of two driven rolls, these therefore have an opposite direction of rotation.
  • the surface of a roll can be smooth, with rings, cams, grooves, or with "picks” (pyramid teeth) and other structures - and this can be provided in various shapes and depths.
  • variable roller mills In prior art variable roller mills, one roller is fixed and the second roller can be displaced or pivoted to vary the spacing of the two rollers relative to one another. For some applications, however, it is advantageous if both rollers are synchronously adjustable and both rollers can be moved from the falling line of the ground material. This option is particularly desirable in particle beam equipment, such as dry ice blasting equipment, since the dry ice particles can pass through the roll mill without hitting one of the rolls, thereby preventing unwanted comminution of the particles and the danger clogging of the roller mill by the particles is reduced.
  • particle beam equipment such as dry ice blasting equipment
  • the JP 4064290 B2 and DE19955660C1 each show a um shimmer- and health-friendly process for processing textiles in particular denim fabric, in which the fabric is irradiated with dry ice particles to roughen the fabric or bleach.
  • a mill is provided to grind the dry ice particles to a uniform size.
  • An adjustability of the mill in particular an adjustability, which allows uncrushed dry ice particles to pass through the mill, is not shown.
  • WO 9416861 shows a device for ice blasting, while the ice is crushed by a roll crusher between two opposing parallel rollers.
  • the distance between the rollers is adjustable by a roller is moved translationally to the second, fixed roller. Thus it can be adjusted how finely the ice is crushed.
  • DE 102006000510 shows a roller mill for a dry ice blasting machine.
  • a change-over flap is attached with which the dry ice pellets are fed to either the roll mill with a variable-gap roll or a bypass.
  • the device can therefore be operated with uncut or shredded dry ice pellets, these do not pass the same way.
  • WO 2013127986 shows an adjustable grinder, in particular for grinding dry ice.
  • a crushing bar is arranged between two grinding rollers, resulting in two grinding gaps. These grinding gaps are constantly wide over the length of the roller. This is achieved in that the crushing bar protrudes into the space between the two grinding rollers in such a way that it intersects the connecting line between the two axes of rotation of the grinding rollers.
  • the crushing bar is slidably provided, wherein it has a cross section which is not constant transversely to the displacement direction. By a vertical displacement of the crushing bar, the grinding gap between the grinding rollers and the crushing bar between a minimum and a maximum value can be set.
  • the rollers are stored stationary.
  • US 2555415 shows a drive mechanism for a roller mill wherein both rollers are coupled by a gear transmission and are driven by this counter-equal.
  • a roller is fixedly mounted and the second roller can be moved toward or away from the first rollers in order to adjust the grinding gap can.
  • Both rollers are each mounted on a rotatable shaft having a gear at one end.
  • the stationary-roller gear is engaged with a first intermediate gear, this first intermediate gear is engaged with a second intermediate gear, and the second intermediate gear is engaged with the variable-speed gear.
  • the two intermediate gears are mounted on stationary shafts.
  • the gear of the adjustable roller can be pivoted radially about the second idler gear toward or away from the stationary roller and is guided in an arcuate groove for this purpose.
  • the grinding gap can be adjusted steplessly in the desired width.
  • the dry ice pellets can optionally be subjected to different processing steps, or alternatively be used without comminution, the pellets being fed through a flap to different, spatially separated devices.
  • DE 849641 AI shows an adjusting mechanism for roll mills, in which each roller is mounted eccentrically between two individual discs.
  • the two discs each have a rectangular recess in which an eccentric shaft is inserted accurately.
  • the eccentric shaft By turning the eccentric shaft, the two discs are rotated synchronously, with the big disadvantage that the Extent of the adjustment is limited to the eccentricity of the eccentric shaft.
  • Another significant disadvantage is that the rectangular opening in the panes can be sealed only with difficulty and with some additional effort.
  • Another significant disadvantage is that the eccentric shaft is ground during the adjustment along the straight surfaces of the rectangular recess, with the result that the discs and thus the rollers develop a game quickly, or that the position of the two discs no longer is exactly synchronous, which leads to an inclination of the Wal ze.
  • the object underlying the invention is, firstly, to provide an adjusting mechanism for the roller of a crusher, or a mill, which facilitates a sealing of the housing, thereby enabling an adjustment of the grinding gap in a large area and, secondly, an adjusting mechanism create, which allows two or more rollers in synchronous crushing or mills with respect to each other to the falling line of the material to be ground or away from this.
  • a roller mill with an adjustable wide grinding gap, wherein the housing is laterally penetrated only by circular openings.
  • Such a roller mill is achieved in that the roller is mounted eccentrically between two areas of a shaft-shaped adjusting device and the adjusting device is mounted laterally in the housing of the roller mill, wherein the position of the roller is variable by rotation of the adjusting device about its axis.
  • Both rollers are adjusted synchronously to each other, whereby both are movable from the falling line of the ground material
  • the two rollers are coupled by a gear transmission or a belt drive.
  • the roll mill or breaker according to the invention is preferably used in a device for compressed air blasting, in particular with dry ice (carbon dioxide in solid form). Dry ice blasters are used to clean or machine surfaces. The cleaning performance can be controlled by the size of the dry ice particles. The smaller the particles, the gentler and more economical the cleaning. By means of the roller mill according to the invention, it is possible to use any finely comminuted or uncomminuted dry ice pellets, these laying back the same way within the device.
  • the housing can be sealed with simple means,
  • the width of the grinding gap can be infinitely adjusted in a wide range
  • a roll mill according to the invention which, seen in the longitudinal direction (axial direction) of the roll, has at least two partial regions which have a different width of grinding gap.
  • the aspect ratio of the subregions is adjustable relative to one another.
  • the invention comprises a method for dry ice blasting, wherein the degree of grinding of the dry ice particles is adjustable steplessly and without time interruption from finely ground to unmilled dry ice pellets.
  • the invention also includes a method for dry ice blasting, in which less crushed up to undecompared dry ice pellets and finely comminuted pellets are contained in the jet, wherein the ratio of less crushed up to uncrushed dry ice pellets and adjustable finely comminuted pellets in Beam is adjustable.
  • Fig. 1 shows a roll mill according to the invention in a sectional view from the side and from above in the execution of only one roller with a small grinding gap.
  • Fig. 2 shows a roll mill according to the invention from Fig. 1 in a second position with maximum grinding gap.
  • Fig. 3 shows a particularly preferred roller mill according to the invention with two rollers, each with an adjusting device in a sectional view from the side and from above.
  • FIG. 4 shows an alternative embodiment of the adjusting device according to the invention in a sectional view from above and in a partial sectional view from the side.
  • Fig. 5 shows the pivoting gear of the roller mill according to the invention in various positions in a sectional view from the side.
  • Fig. 6 show the roller mill according to the invention in different positions without housing in SD view obliquely from above.
  • Fig. 7 Shows a dry ice blasting machine with the roll mill according to the invention in a lateral sectional view.
  • Fig. 8 shows a preferred roller mill according to the invention, in which a roller is displaceable in the axial direction, in sectional view from the side and from above.
  • Fig. 9 shows the roller mill according to the invention from Fig. 8 in a second position with a wider grinding gap.
  • FIGS. 10a and 10b show roll mills according to the invention with active conveyance of the comminuted material to be ground by the rolling mill in a partial sectional view from above.
  • FIGS. 6a and 6b show variant embodiments of the roller mill according to the invention with differently adjustable grinding gap areas with only one roller.
  • FIG. 12 shows a dry ice blasting machine with a roll mill according to the invention with differently adjustable grinding gap areas in a lateral sectional view.
  • Fig. 1 and Fig. 2 show the basic principle of a roll mill according to the invention.
  • the roller mill has at least one roller 1, which is designed as a hollow cylinder. Through the roller 1, a shaft runs 1.1. The rotational movement of the shafts 1.1, for example, by feather keys, on the roller 1, transmitted. Shaft 1.1 and roll 1 may also be formed as a monolithic part.
  • the rollers 1 are arranged parallel to a surface 3.1 or a second roller 2 in a housing 3. In that position, which is shown in Fig. 1, form the roller 1 and the surface 3.1 between them a uniform, narrow grinding gap, which runs over the entire length of the roller 1.
  • the grinding stock passes from above, for example, from the hopper opening of a storage container to the roller 1.
  • the shaft 1.1 and thus the roller 1 rotates such that the top grinding material is moved by the rotational movement in the gap between roller 1 and surface 3.1.
  • the material to be ground is ground as a function of the width of the grinding gap.
  • an adjusting device 5 is provided.
  • the shaft 1.1 of the roller 1 is mounted in the adjusting device 5.
  • the adjusting device 5 is a shaft which is mounted at its two ends in the housing 3.
  • the main body of the adjusting device 5 is formed by two discs 5.1, 5.3, which are connected by an eccentrically arranged web 5.2.
  • This web 5.2 runs parallel to the roller 1, the shaft 1.1 is mounted eccentrically in the two discs 5.1, 5.3 of the adjusting device 5.
  • the curved, wedge-shaped cross section of the web 5.2 serves to partially fill the area lying between the disks 5.1, 5.3 and not occupied by the roller 1, in order to prevent a passage of ground material behind the roller 1.
  • the adjusting device 5 may be made of one piece, or composed of several parts. The same applies to the housing 3.
  • the disk 5.1 is mounted directly in the housing, while on the disc 5.3 a shaft portion with a smaller diameter connects, which penetrates the housing 3 and is stored in this.
  • a mechanism which can rotate the adjusting device 5 about its own axis and fix in any position Such a mechanism could consist of a lever with locking function or clamping function.
  • the rotation and fixation of the adjusting device 5 can also be automated via an electromechanical drive, such as a servo drive or stepper motor.
  • Fig. 2 the roller mill of Fig. 1 is shown in a second position.
  • the adjusting device 5 was rotated about its own axis (in the present example by about 130 °), whereby the rollers 1 was seen in the fall direction of the material to be ground down, moved back.
  • the side sectional view left in Fig. 2 it can be seen that the roller 1 has been moved completely out of the chute 3.2 of the ground material.
  • the adjusting device can also be fixed in an arbitrary position between the end positions shown in FIGS. 1 and 3 in order to be able to set the desired grinding degree.
  • the housing 3 is a cuboid which has a recess with a circular cross section and a recess with a rectangular cross section.
  • the recess with a circular cross section serves to receive the adjusting device 5.
  • the recess with a rectangular cross section extends at an angle of 90 ° to the recess with a round cross section through the cuboid.
  • the recess with a rectangular cross-section extends between the two disks 5.1, 5.3 of the adjusting device 5 as seen from above.
  • the recess with a rectangular cross-section therefore forms a continuous chute 3.2 for the millbase, in which the roller 1 can be selectively moved by turning the adjusting device 5.
  • the cuboid housing In execution with two rolls 1, 2 and two adjusting devices 5, the cuboid housing has two parallel horizontal recess with a circular cross-section for receiving the two adjusting devices 5.
  • the vertical chute 3.2 extends at an angle of 90 ° to the two recess with a circular cross-section and connects them in the area of the rollers 1, 2.
  • the recess with rectangular cross section therefore again forms a continuous chute 3.2 for the material to be ground, in which the roller. 1 and roll 2 can be selectively moved by turning their adjusting devices 5.
  • the roll mill comprises two counter-rotating rolls 1, 2, each roll 1, 2 being mounted in an adjusting device 5.
  • Each adjusting device 5 is rotatable about its axis, preferably the rotation is synchronous and opposite. This can be done, for example, that the discs 5.1, 5.3 of both adjusting devices are equipped with a toothing, wherein the teeth of the two adjusting devices 5 interlock. As a result, the rotational movement of the first adjusting device 5 is transmitted to the second adjusting device 5. It may be sufficient to provide the gearing only on a partial circumference of the discs 5.1, 5.3. This subset of an adjusting device 5 is that which comes into contact with the other adjusting device 5 when adjusting the grinding gap between the two end positions.
  • the disc has 5.1 at its outer end facing the housing on an area with a smaller diameter. In this area, the storage of the disc takes place 5.1.
  • the shaft 1.1 penetrates the disc 5.1 and thus protrudes from the housing 3. The same applies to the wave 2.1.
  • both shafts 1.1, 2.1 are driven synchronously with each other. Since both shafts 1.1, 2.1 are mounted eccentrically in the respective adjusting device 5, takes place during rotation of the Adjusting device 5, a pivoting of the waves 1.1, 2.1. Due to this pivoting movement, a special gear arrangement is necessary to achieve the coupling of the drive of the shafts 1.1, 2.1. This gear arrangement is shown in Figs. 5a and 5b and 6a, 6b.
  • the shafts 1.1 and 2.1 are provided in that region which projects out of the housing 3 with a toothed wheel 4.1, 4.2.
  • the two gears 4.1, 4.2 are coupled by two intermediate gears 4.3, 4.4, wherein the gear 4.2 is pivotable about the subsequent intermediate gear 4.4 within the transmission housing.
  • This transmission will henceforth be referred to as a swivel gear 4.
  • the swivel gear 4 is implemented approximately as in the above-cited US 2555415 (A), with the difference that the subject gears 4.1, 4.2, 4.3, 4.4 have the same size, so that the two rollers 1, 2 rotate at the same speed.
  • the subject swivel gear 4 follows the pivoting movement of the shaft 1.1.
  • the change in the distance between the shafts 1.1, 2.1 is compensated by the pivoting movement of the gear 4.2 to the gear 4.4.
  • the gear 4.1 is pivoted about the gear 4.3 and the gear 4.4 is pivoted about the gear 4.3 when rotating the adjusting devices 5.
  • the gear housing can be fixedly connected to the housing 3 of the roller mill.
  • the size and position of the gears must be adjusted in this case to the pivot radius of the shafts 1.1, 2.1.
  • the essential parts of the device without housing 3 are shown in FIGS. 6a and 6b.
  • At the first adjusting device engages a lever with which this can be adjusted and fixed in any position between two end positions.
  • the rotational movement of the first adjusting device 5 is transmitted via a toothing on the discs 5.1, 5.3 to the second adjusting device 5.
  • the transmission of the rotational movement about arranged outside of the housing 3 gears 5.4 done.
  • the shaft 1.1 penetrates only the disc 5.1 and not the housing 3.
  • the disc 5.1 is mounted inside the housing 3 and does not penetrate this.
  • the shaft 1.1 terminates between the inner wall of the housing 3 and the disc 5.1 and is provided at this end with a gear 4.5.
  • the housing 3 is penetrated by the drive shaft 1.2, which is mounted centrally in the disc 5.1.
  • the drive shaft 1.2 has a gear 4.6, which is in engagement with the gear 4.5. Upon rotation of the adjusting device 5, the gear 4.5 is rotated about the gear 4.6.
  • the shaft 1.2 undergoes no pivotal movement, whereby it can be driven by a motor with simple means without pivoting gear.
  • the drive shafts 1.2 of both rolls 1, 2 can be coupled via a rigid gear or a belt drive instead of a swivel gear 4.
  • the transmission arrangement of FIG. 4 can also be arranged outside the housing 3, in a separate transmission housing.
  • a second roller 1 may be present eccentrically in the area between the discs 5.1 and 5.3, wherein the shaft 1.1 of the second roller 1 is also formed and provided with a gear 4.5, as the shaft 1.1 of the first roller 1.
  • both rollers 1 are driven via the drive shaft 1.2 and the gear 4.6.
  • the diameters of the two rollers 1 are in total smaller than the diameter of the discs 5.1, 5.3.
  • two webs 5.2 may be present which extend parallel to the rollers 1 between the disks 5.1, 5.3.
  • the rolls 1 have a different surface structure, for example, a roll 1 has a smoother surface for fine grinding of the ground material and the second roll 1 has a higher structured surface for coarse breaking of the ground material.
  • the second roller 1 could also be designed as a cellular wheel, which would allow an active promotion of the ground material without crushing.
  • the adjusting device 5 is formed as a "tool changer", which can be changed by rotation of the adjusting device 5 by 180 ° between the two rollers 1. The possibility of adjusting the width of the grinding gap remains for each roller 1.
  • the described extension can be arranged opposite to a surface 3.1, or instead of one or both rollers 1, 2 or adjusting devices 5 in Fig. 3 according to FIGS. 1 and 2.
  • the housing 3 (with the exception of the openings for feeding the ground material and the opening for releasing the comminuted material to be ground) only has circular openings through which the adjusting device 5 extends.
  • the interior of the housing 3 can thus be sealed at all these circular openings.
  • a sealed storage tank and at the bottom of the roll mill a pressure-tight lock for forwarding the crushed ground material can, if desired, a self-contained system with a relation to the ambient pressure higher or lower internal pressure will be realized.
  • Such a device in pressure-tight design comprises at least one storage container for storing the dry ice pellets, a grinder according to the invention for crushing the dry ice particles, a lock for feeding the shredded dry ice pellets into the pressure line 9, a hose connected to the pressure line 9 and a nozzle (eg in shape a gun) for the discharge of the compressed air and the dry ice particles carried therein.
  • the objective mill is also advantageous for dry ice blasting equipment with pressure-free storage, since the roller 1 and the rollers 1, 2 can be pivoted out of the fall line and so depending on the design of the chute 3.2 completely or at least largely free.
  • the well-sealable mounting of the adjustable roller 1 and the adjustable rollers 1, 2 prevents the penetration of moisture, which can lead to icing of the mill, or clumping of the dry ice pellets.
  • the pellets typically have a length of about 3-10mm, and a diameter of 2-4mm. These pellets pass through the hopper 7 of the reservoir due to gravity in the chute 3.2 of the housing 3 of the roller mill and thus from above to the roller 1, and to the rollers 1 and 2 and are moved by them in the grinding gap. Depending on the width of the grinding gap, these pellets can be up to particles with a Size of less than 500 pm to be crushed. Is the width of the
  • the roller mill shown in Fig. 8 could also be reversed, so standing upside down, placed between the hopper 7 and the metering device 8, when the two rollers 1, 2 are driven in the reverse direction.
  • roller mill according to the invention can be adjusted in a wide range, arbitrarily finely ground to undrawn dry ice pellets can be supplied, whereby the risk of clogging of the mill compared with designs according to the prior art is reduced and a good tightness of the mill is achieved. For these reasons, the use of the objective roller mill for grinding dry ice pellets is particularly valuable.
  • the objective mill is also particularly valuable because it can be switched without interruption from ground to unmilled dry ice pellets by setting the mill.
  • the inventive method for dry ice blasting for cleaning or processing of surfaces wherein the particle size of the dry ice contained in the beam is infinitely and continuously adjustable from finely ground to unground dry ice pellets, is thus new compared to the prior art and advantageous because of the flexibility and extended substitutability of the method, as well as by the time savings in the uninterrupted switching from ground to unground or less finely ground dry ice pellets.
  • the fact that ground and unmilled dry ice pellets pass the same route through the mill contributes to a simple construction of the dry ice blasting machine.
  • the process according to the invention is particularly preferably used for cleaning or processing textiles.
  • the inventive method is extremely advantageous. Due to the quickly adjustable size of the dry ice particles up to crushed dry ice pellets, many effects such as the "stone washed" effect, bleached areas, patterns, scuffed areas and even holes can be made on a processing machine.
  • the grinding degree of the dry ice pellets can be changed with very little expenditure of time so that the optimum particle size results.
  • both the consumption of dry ice can be minimized, and the processing time can be significantly reduced.
  • the range of workable textiles for example, extends from very sensitive to very robust textiles.
  • the inventive method is much more flexible, universally applicable, resource and time-saving.
  • the concrete mill can be used for the adjustable or optional comminution of each ground material, such as limestone, marl, stones with earth, clay and mud and foreign bodies, gypsum, bauxite, kaolin, shale, coal, Ore, slag, waste, asphalt break-up, demolition material, glass,
  • each ground material such as limestone, marl, stones with earth, clay and mud and foreign bodies, gypsum, bauxite, kaolin, shale, coal, Ore, slag, waste, asphalt break-up, demolition material, glass,
  • the locking device or the fixing device of the adjusting device 5 when exceeding a certain limit load, or limit force on the rollers 1, 2, the adjusting device 5 is free, so that the rollers 1, 2 can be pressed apart hard foreign bodies in the millbase to pass uncrushed before they can cause damage to the mill. After the passage of the foreign body, or after elimination of the load, the actuator 5 returns to the previously set position.
  • FIGS. 8 to 11 show the particularly preferred embodiment of the roller mill according to the invention, which, viewed in the longitudinal direction (axial direction) of the roller, has at least two partial areas which have a different width of the grinding gap.
  • roller 2 is displaceable in the axial direction along shaft 2.1.
  • a recess 3.3 is provided, in which the roller 2 can be partially inserted if necessary.
  • the recess 3.3 has only a slightly larger diameter than the roller 2 in order to prevent the entry of dry ice pellets in the recess 3.3.
  • the recess 3.3 has a connection to the outlet opening of the roller mill, so that finely ground dry ice, which could get into the recess 3.3, is dissipated.
  • the roller mill of Fig. 8 is shown in a second position.
  • the roller 2 is displaced along the shaft 2.1 into the recess 3.3.
  • the released opening 3.4, or the shaft 2.1 extending therein preferably has a grinding gap to the roller 1, which is wider, preferably by a multiple, than the maximum extent of the particles of the ground material.
  • the length of the grinding gap is reduced by the distance with which the roller 2 is displaced into the recess 3.3.
  • the material to be ground can now pass that opening 3.4, which has become free by moving the roller 2, without being comminuted.
  • Fig. 10a shows an advantageous embodiment of the roller mill of Fig. 8 and 9.
  • that point of the shaft 2.1 is free when moving the roller 2 and thus gives an opening for the dry ice particles, provided with a structure which provides an active transport of the ground material allows.
  • this structure is designed as a cellular wheel 6.
  • the roller 2 is designed to be hollow in that region which overlaps with the cellular wheel 6, the opening of this cavity being closed by a plate which has recesses for the blades of the cellular wheel 6.
  • regrind which is located in the feeder 6, during the process of the roller 2 in the position in which the feeder 6 is closed, is pushed laterally out of the feeder 6 by the plate, so that the material to be ground is not trapped in the feeder 6 ,
  • the housing 3 in the area next to the feeder 6 on an exemption.
  • An active transport of the ground material is advantageous because the amount of ground material that passes through the opening, in this case of the rotational speed of the shaft 2.1 is dependent.
  • each of these areas could have the same length as the roller 1.
  • one for receiving the feeder 6 and the other for receiving the roller 2 can be changed by moving the feeder 6 and roller 2 along the shaft 2.1 between an operation as a mill and an operation as a conveyor for comminuted millbase become.
  • any mixing ratio of crushed and crushed regrind can be adjusted.
  • FIGS. IIa and IIb Generalizations are shown in FIGS. IIa and IIb, in which only one driven roller is present.
  • the two or more sections with different grinding gap can be implemented by one or more adjustable crushing bars or refractive surfaces.
  • a crushing bar is provided, which is provided parallel to the roller 1 and which releases by moving in the longitudinal direction of the roller 1 a region through which the material to be ground can pass through the roller mill without being crushed.
  • the subject invention can be realized with a crushing bar, which in the longitudinal direction of the roller. 1 is displaceable. This break line could also be between two
  • Rollers 1, 2 may be arranged.
  • the roller 1 is shown in simplified form as a non-adjustable roller.
  • a roll mill having at least two partial areas, viewed in the longitudinal direction (axial direction) of the roller, having a different width of grinding gap, wherein the length ratio of the grinding gaps is adjustable, or the width of the grinding gaps of the two areas is independently adjustable, new and advantageous over the prior art is, even if no inventive roller 1 with adjustment device 5 according to claim 1 is present.
  • Such embodiments can be achieved by replacing the rollers 1 according to the invention with adjusting device 5 according to the invention in FIGS. 8, 9, 10a, 10b by rollers without adjusting device or conventional adjusting devices known from the prior art.
  • Such a roll mill can be found in Austrian Patent Application A 50049/2014, the priority of which is claimed herein and the essential contents of which are incorporated herein by reference and incorporated herein by reference as if they were included in their entirety.
  • the roller mill is divided by two partition plates in three, for example, different lengths areas.
  • a separating plate extends, for example, from the feed opening of the material to be ground up to the point at which the roller 1 has the smallest distance to the breaking strips, wherein the side surface of the separating plate facing the roller 1 has a constantly small radial distance from the surface of the roller 1.
  • the partition plates thus divide the feed side of the roller mill into three chambers. In each of these chambers or sub-areas a crushing bar is provided, the distance to the roller 1 can be set independently. This results in three sections in which a different width grinding gap can be formed. Thus, a mixture of regrind with three different degrees of grinding can be produced simultaneously.
  • Against- peculiar invention can be realized with several independently adjustable breaker bars.
  • the subject invention can be realized with a plurality of independently adjustable rollers 2.
  • the separating plates shown in Fig. IIb could also be slidably mounted in the housing along the longitudinal direction of the roller 1 in order to allow a separation of two partial areas with different width grinding gap whose length ratio is adjustable to each other in the housing 3.
  • the various described mill or crusher variants can, as described above in detail with reference to FIG. 7 described, be used advantageously in devices for dry ice blasting.
  • a particularly preferred process according to the invention for dry ice blasting is now shown with reference to FIG. 12, in which the roll mill according to the invention has at least two partial regions with a different grinding gap, so that dry ice particles can be provided simultaneously in two or more different degrees of grinding.
  • a grinding gap is sufficiently wide, then simultaneously ground and uncrushed dry ice pellets are delivered.
  • Under a sufficiently wide grinding gap is in particular an opening understood 3.4, which is achieved by axial displacement of the roller 2 along the shaft 2.1. Due to the fact that some of the dry ice pellets pass through the opening 3.4 without comminution and some of the dry ice particles are ground in the grinding gap between roller 1 and roller 2, a mixture of two different partial quantities is produced, one partial amount consisting of comminuted and the other consisting of uncrushed dry ice pellets.
  • the particularly preferred method according to the invention for dry ice blasting is that of cleaning or processing the The working surface is irradiated simultaneously with a mixture of different finely ground, or from a mixture of ground and unground dry ice pellets. A subset of dry ice pellets in the jet is thus finely ground than the other subset or the other subsets.
  • dry ice pellets are preferably comminuted in two subregions of the roll mill according to the invention with a different width of the grinding gap.
  • the width of the grinding gap of at least one of the two areas can be adjusted and / or the length ratio of the two partial areas or grinding gaps can be set to one another.
  • the process according to the invention is particularly preferably used for cleaning or processing textiles.
  • the inventive method is extremely advantageous.
  • the mixture of different sized dry ice particles allows many effects such as the "stone washed" effect, bleached areas, patterns, scuffed areas and even holes to be made on a processing machine.
  • the composition or the degree of grinding of the dry ice mixture can be changed with very little expenditure of time, so that the optimum particle composition results.
  • both the consumption of dry ice can be minimized, and the processing time can be significantly reduced.
  • the range of workable textiles for example, extends from very sensitive to very robust textiles.
  • the inventive method is much more flexible, universally applicable, resource and time-saving.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)

Abstract

L'invention concerne un broyeur à cylindre(s) comprenant au moins un cylindre rotatif (1) entraîné par un système d'entraînement, ledit cylindre rotatif (1) formant une fente de broyage avec un second cylindre (2) placé à une certaine distance ou avec une surface (3.1), la matière à broyer passant à travers ladite fente de broyage, et étant fragmentée en fonction de la largeur de la fente de broyage, le cylindre (1) étant monté de manière excentrique entre deux parties d'un dispositif de positionnement (5) en forme d'arbre, et la position du cylindre (1) étant modifiable par rotation du dispositif de positionnement (5) autour de son propre axe.
PCT/AT2015/050022 2014-01-27 2015-01-26 Mécanisme de positionnement pour broyeurs à cylindres Ceased WO2015109354A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP15712246.6A EP3099414A2 (fr) 2014-01-27 2015-01-26 Mécanisme de positionnement pour broyeurs à cylindres

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
ATA50049/2014 2014-01-27
ATA50049/2014A AT515361A1 (de) 2014-01-27 2014-01-27 Walzenmühle insbesondere zur Zerkleinerung von Trockeneispellets
ATA50050/2014A AT515362A1 (de) 2014-01-27 2014-01-27 Stellmechanismus für Walzenmühlen
ATA50050/2014 2014-01-27

Publications (2)

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WO2015109354A2 true WO2015109354A2 (fr) 2015-07-30
WO2015109354A3 WO2015109354A3 (fr) 2015-09-24

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Cited By (8)

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WO2017070221A1 (fr) * 2015-10-19 2017-04-27 Cold Jet, Llc Broyeur de milieu abrasif
JP2019188596A (ja) * 2018-04-24 2019-10-31 コールド・ジェット・エルエルシーＣｏｌｄ Ｊｅｔ， ＬＬＣ 粒子ブラスト器具
TWI707726B (zh) * 2020-05-27 2020-10-21 崑豐機械股份有限公司 碎石機
CN112844562A (zh) * 2021-01-04 2021-05-28 南通北新新能源科技有限公司 一种废旧电池回收破碎机
CN113663808A (zh) * 2021-08-18 2021-11-19 安徽金寨乔康药业有限公司 一种灵芝孢子粉低温剪切式破壁装备及其使用方法
CN114100443A (zh) * 2021-12-09 2022-03-01 海郡生物科技(连云港)有限公司 用于生产软骨粉的混粉机
CN118925845A (zh) * 2024-10-14 2024-11-12 浙江润优新材料科技有限公司 一种矿石研磨装置及其使用方法
CN120502375A (zh) * 2025-07-18 2025-08-19 栾川县亨凯冶金材料销售有限公司 一种硫化铁矿石原料的一体式粉碎机

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CN108161765B (zh) * 2017-12-29 2019-11-26 重庆广福科技有限公司 用于对管件进行喷砂处理装置

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DE849641C (de) 1948-10-26 1952-09-18 Felix Vogt Walzenmuehle
US4389820A (en) 1980-12-29 1983-06-28 Lockheed Corporation Blasting machine utilizing sublimable particles
US4463736A (en) 1982-06-07 1984-08-07 Hayward Jr Wallace Chambered rotary metering device
JPH0464290B2 (fr) 1985-11-16 1992-10-14 Takiron Co
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US5109636A (en) 1988-08-01 1992-05-05 Cold Jet, Inc. Particle blast cleaning apparatus and method
WO1994016861A1 (fr) 1993-01-26 1994-08-04 Ice Blast International Ltd. Appareil d'alimentation en temps reel d'un systeme de traitement par projection de glace
EP0971811A1 (fr) 1997-11-03 2000-01-19 Huibert Konings Dispositif de dosage pour comprimes cryogenes
US6346035B1 (en) 1998-12-24 2002-02-12 Cae Alpheus, Inc. Generation of an airstream with subliminable solid particles
DE19955660C1 (de) 1999-11-19 2001-03-22 Messer Griesheim Gmbh Verfahren und Vorrichtung zur Behandlung der Oberfläche von Textilien
EP1637282A1 (fr) 2004-09-15 2006-03-22 Alfred Kärcher GmbH & Co. KG Dispositif à projection de glace carbonique
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US11607774B2 (en) 2015-10-19 2023-03-21 Cold Jet, Llc Blast media comminutor
CN108367411A (zh) * 2015-10-19 2018-08-03 冷喷有限责任公司 喷射介质粉碎机
JP2018535843A (ja) * 2015-10-19 2018-12-06 コールド・ジェット・エルエルシーＣｏｌｄ Ｊｅｔ， ＬＬＣ ブラスト媒体コミニュータ
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JP2019188596A (ja) * 2018-04-24 2019-10-31 コールド・ジェット・エルエルシーＣｏｌｄ Ｊｅｔ， ＬＬＣ 粒子ブラスト器具
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US11731243B2 (en) 2018-04-24 2023-08-22 Cold Jet, Llc Spring return actuator for rotary valves
TWI707726B (zh) * 2020-05-27 2020-10-21 崑豐機械股份有限公司 碎石機
CN112844562B (zh) * 2021-01-04 2022-03-25 南通北新新能源科技有限公司 一种废旧电池回收破碎机
CN112844562A (zh) * 2021-01-04 2021-05-28 南通北新新能源科技有限公司 一种废旧电池回收破碎机
CN113663808A (zh) * 2021-08-18 2021-11-19 安徽金寨乔康药业有限公司 一种灵芝孢子粉低温剪切式破壁装备及其使用方法
CN114100443A (zh) * 2021-12-09 2022-03-01 海郡生物科技(连云港)有限公司 用于生产软骨粉的混粉机
CN118925845A (zh) * 2024-10-14 2024-11-12 浙江润优新材料科技有限公司 一种矿石研磨装置及其使用方法
CN120502375A (zh) * 2025-07-18 2025-08-19 栾川县亨凯冶金材料销售有限公司 一种硫化铁矿石原料的一体式粉碎机

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