JP2007307520A - Complex biaxial crusher - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a complex biaxial crusher having a simple and functional structure and capable of efficiently crushing object materials in two stages; rough crushing and fine crushing; solely by the crusher without being disturbed even if the object materials contain sheets, films, or stringy matter. <P>SOLUTION: The crusher comprises a crushing casing 1, a pair of crushing rolls 2 and 2 installed in parallel along a horizontal direction, a reversible motor 7 for rightly and reversely rotating the crushing rolls 2 and 2, and a pair of fixed cutting tools 3 and 3 facing to both crushing rolls 2 and 2. A plurality of rotation side blades 24..., 25... are installed in the peripheral faces of the respective crushing rolls 2 while facing in the rightly and reversely rotational directions and a plurality of fixation side blade 31... corresponding to the rotation side blade 25... are installed in the respective fixed cutting tools 3. The object materials are roughly crushed in a slit cutter manner between rotation side blades 24 and 24 by rightly rotating both crushing rolls 2 and 2 and the object materials are finely crushed in a grinding manner between the rotation side blades 25 of the respective crushing rolls 2 and the fixation side blades 31 of the respective fixation cutting tools 3 by reversely rotating both crushing rolls 2 and 2. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a shear-type composite biaxial crusher that crushes solid workpieces of various materials.

Conventionally, in the processing of waste materials such as plastics, wood chips, paper, and metals, twin slit type crushers have been widely used to crush these waste materials. This twin slit type crusher is a pair of crushing casings each having a plurality of annular blades fitted and fixed at regular intervals through an annular spacer in a box-shaped crushing casing having an upper portion as an inlet and a lower portion as a discharge port. The crushing rolls of the crushing rolls are arranged horizontally in parallel with each other by fitting each annular cutting tool into an annular groove formed at the position of the other annular spacer. The workpiece to be processed is crushed by a slit cutter method that draws into the part where the annular cutting tools of both shafts mesh with each other (Patent Documents 1 to 3).
Japanese Patent No. 2813572 Japanese Patent No. 3005458 JP 2005-319545 A

  However, in the above-described twin slit type crusher, the material to be processed is crushed by a slit cutter method in such a size that it passes through an annular groove between adjacent crushing blades, but it cannot be further crushed. Therefore, when it is necessary to crush the material to be processed to a fine level, after roughly crushing (primary crushing) with a twin-screw crusher such as this twin slit crusher, It is common to pulverize (secondary crushing) with a uniaxial crusher equipped with a rotary die and fixed blade, but it is expensive to install two types of crushers, and a large installation space is required. In short, the space efficiency in the processing facility is reduced, leading to an increase in processing cost.

  Moreover, in the above-mentioned twin slit type crusher, when a plastic sheet, film, string-like material or the like is mixed in the object to be processed, it cannot be cut short because of the slit cutter method. In many cases, these become belt-shaped and wound around the crushing roll, resulting in a reduction in crushing ability and malfunction. Therefore, in order to avoid this, it is necessary to select an object to be processed in advance, and there is a problem that the work is very troublesome.

  In view of the above-mentioned circumstances, the present invention can efficiently perform two-stage crushing of coarse crushing and fine crushing for crushing the workpiece to a fine level with the same apparatus, and in the workpiece, a sheet, film, string The purpose of the present invention is to provide a complex biaxial crusher having a simple structure and a function that is not hindered by the presence of mixed materials.

  In order to achieve the above-mentioned object, a composite biaxial crusher according to claim 1 of the present invention, if attached with a reference numeral in the drawing, has a crushing casing 1 having an upper portion 1a as a workpiece to be processed, A pair of crushing rolls 2 and 2 arranged in parallel in the crushing casing 1 in the horizontal direction, rotation driving means (reversible motor 7) for rotating the crushing rolls 2 and 2 forward and reverse, 2 and a pair of fixed blades 3 and 3 fixed to the inner surface side of the crushing casing 1 so as to face each other, each facing the circumferential surface of each crushing roll 2 in the forward and reverse rotation directions of the crushing roll 2. A plurality of rotation side blades 24... 25 are provided, and each fixed blade 3 has a plurality of fixed side blades 31 corresponding to the rotation side blades 25 facing the reverse rotation direction side of the opposing crushing roll 2. ... provided on the mutual contact part of both crushing rolls 2 and 2 The object to be processed is roughly crushed into a slit cutter type between the rotating blades 24 and 24 by the forward rotation drive whose side is the biting side, while each crushing roll 2 is driven by the reverse rotation of both the crushing rolls 2 and 2. The rotation-side blade body 25 and the fixed-side blade body 31 of each fixed blade tool 3 are configured to crush and pulverize the object to be processed.

  The invention according to claim 2 is the composite biaxial crusher according to claim 1, wherein each crushing roll 2 has a plurality of annular blades 21 having rotation-side blade bodies 24, 25 on the outer periphery thereof on the rotating shaft body 2a. Are fitted at regular intervals via spacers 22... And annular grooves 23 are formed at the outer peripheral portions of the spacers 22. The annular blades 21 in the two crushing rolls 2 and 2 are opposed to the rotary blades 24 and 25. It is arranged so as to be fitted into the annular groove 23 on the side.

  According to a third aspect of the present invention, in the composite biaxial crusher according to the second aspect, the crushing casing 1 is fitted into the annular grooves 23 of the crushing roll 2 on the inner side of the crushing casing 1 on the upper side and the lower side of the fixed blade 3. It is assumed that the scrapers 4 and 5 are fixed.

  According to a fourth aspect of the present invention, in the composite biaxial crusher according to any one of the first to third aspects, rotation driving means (reversible motor 7) corresponding to both the crushing rolls 2 and 2 are provided.

  According to a fifth aspect of the present invention, in the composite biaxial crusher according to any one of the first to fourth aspects, the crushing casing 1 is divided into upper and lower frame portions 11 and 12 that can be attached to and detached from each other.

  The invention of claim 6 is the composite biaxial crusher according to any one of claims 1 to 5, wherein the rotary blades 24 and 25 of the crushing rolls 2 and 2 are screwed to the mounting base material (annular blade 21). It is made of a chip-like independent member.

  According to the composite biaxial crusher according to the first aspect of the present invention, the object to be processed is roughly slit cutter-shaped between the rotary blades that are close to each other and rub against each other by the forward rotation drive of both crushing rolls. On the other hand, by the reverse rotation drive of both crushing rolls, the object to be processed is finely crushed between the rotating side blades of each crushing roll and the fixed side blades of each fixed cutting tool. Therefore, when crushing coarse workpieces to a fine level, only this composite biaxial crusher is used, and after roughly crushing with the forward rotation drive of both crushing rolls, the crushed product is driven with the reverse rotation drive of both crushing rolls. It is only necessary to crush, and it is not necessary to use a dedicated crusher for each crushing stage as in the past, and since the complex biaxial crusher itself is structurally simple, the equipment cost can be reduced accordingly, Since the installation spacer can be small, the space efficiency of the processing facility can be increased.

  Also, in this composite biaxial crusher, when crushing processing by forward rotation driving of both crushing rolls, if a workpiece, a sheet, a film, a string-like thing, etc. are mixed, they become a band and crush In order to wrap around the roll, it passes through the meshing part of the rotation side blade body of the crushing roll and the stationary side blade body of each fixed blade tool from below, but this meshing part is cut short, so that There is no concern of declining crushing ability or malfunction due to winding. Therefore, it is not necessary to sort and remove the objects to be processed in which sheets, films, string-like objects, etc. are mixed in advance, which is much larger than the processing by the conventional twin slit type crusher. Labor saving can be realized.

  According to the invention of claim 2, in the above-described composite biaxial crusher, since the rotary blade is provided on the annular blade fitted to the rotary shaft, both of the crushing rolls forming a twin slit type are provided. Easy assembly and production.

  According to the invention of claim 3, in the composite biaxial crusher having the twin slit type, the scraper is fitted in each annular groove of the crushing roll on the upper side and the lower side of each fixed blade. At the time of crushing by both forward and reverse rotations of both crushing rolls, it is possible to prevent the object to be processed from falling through the annular groove without being crushed or insufficiently crushed.

  According to the invention of claim 4, in the composite biaxial crusher, since both the crushing rolls can be individually driven to rotate, in the rough crushing by the normal rotation driving of both crushing rolls, the difference in the rotational speeds of both crushing rolls is obtained. By attaching, a twisting action is generated at the meshing part of the rotating blades of each other, so that the cutting property can be improved, and the high-speed rotating side and the low-speed rotating side are periodically exchanged for both crushing rolls. Can equalize wear.

  According to the invention of claim 5, in the above-described composite biaxial crusher, the crushing casing is divided into the upper and lower frame parts. Maintenance such as clogging removal, parts replacement, and repair can be easily performed.

  According to the invention of claim 6, in the above-described composite biaxial crusher, since each rotary side blade of the crushing roll is made of a chip-like independent member, only the blade when the cutting edge reaches the wear limit or breaks. Therefore, the maintenance cost is reduced and the replacement work is easy. Also, it is possible to replace the blade body with an appropriate shape in accordance with the properties such as the type and hardness of the object to be processed.

  Hereinafter, embodiments of a composite biaxial crusher according to the present invention will be specifically described with reference to the drawings. 1 is a front view of the entire crusher, FIG. 2 is a plan view of the crusher, FIG. 3 is a plan view of a crushing casing part, FIG. 4 is a cross-sectional plan view of the crushing casing part in the middle in the vertical direction, and FIG. It is a vertical side view of a casing part.

  As shown in FIG. 1 and FIG. 2, this composite biaxial crusher has a rectangular box frame-shaped crushing casing 1 installed at the center of the gantry 10 and timings on both sides of the gantry 10. A reversible motor 7 and a cyclo reducer 8 that are linked via a belt 6 are installed.

  As shown in FIG. 5, the crushing casing 1 is opened to the upper frame 11 and the lower frame 12 at the middle in the vertical direction while opening the upper side with the hopper 13 attached as the inlet 1a and the lower side as the outlet 1b. Divided configuration. The upper frame body 11 includes a connecting bolt 14a (see FIG. 4) that passes through the thick side plate portion 11a of the upper frame body 11 and is screwed to the thick side plate portion 12a of the lower frame body 11 on both the left and right sides. By removing the connecting bolts 14b that connect the lower end protrusion 11b of the upper frame 11 and the upper end protrusion 12b of the lower frame 12 on both the front and rear sides, it can be separated and removed from the lower frame 12. Yes.

  In the crushing casing 1, as shown in detail in FIG. 4, a pair of crushing rolls 2, 2 arranged in parallel along the horizontal direction of the left and right are self-aligning roller bearings 15 between the upper and lower frame bodies 11, 12. , 15 are rotatably supported by shafts. As shown in FIGS. 1 and 2, the crushing rolls 2 and 2 are connected to the rotating shaft 8a of the cyclo reducer 8 through the gear coupling 20 at one end side of each rotating shaft body 2a. When the reversible motor 7 is operated, the motor rotates forward and backward at a variable speed.

  Moreover, as shown in FIGS. 3-5, the thick plate-shaped fixed cutting tool 3 horizontally arrange | positioned facing each crushing roll 2, and the upper and lower sides were arrange | positioned on each inner surface side before and behind this crushing casing 1 as shown in FIGS. Scrapers 4 and 5 are fixed. Thus, the fixed blade 3 has a continuous concavo-convex shape on its inner edge side, and a plurality of (four in the figure) concave portions that form an inverted trapezoidal shape in plan view constitute the fixed blade 31, and the lower frame Are attached by mounting bolts 16b on the support block 17 fixed to the front and rear side plate portions 12c, 12c via twelve mounting bolts 16a.

  On the other hand, the upper scraper 4 is fixed to the side plate portion 11c of the upper frame 11 via mounting bolts 16c. Further, the lower scraper 5 is fixed to the lower frame 12 together with the support block 17 by means of mounting bolts 16a in a state where the lower scraper 5 is joined to the inner surface side of the support block 17. Thus, the inner edge sides of the scrapers 4 and 5 are in and out of a comb blade shape corresponding to the unevenness on the inner edge side of the fixed blade 3, and each groove 4b between the protruding edges 4a, 5a,. 5b is arrange | positioned so that it may correspond with the fixed side blade body 31 of the fixed blade tool 3 up and down.

  Each crushing roll 2 has a plurality of (in the figure, four) annular blades 21 and annular spacers 22 having small outer diameters alternately fitted on a rotary shaft body 2a having a substantially square cross section. Further, as shown in FIG. 6, each annular blade 21 has a dovetail-shaped blade body mounting portion 21 a projecting at three locations equally spaced at 120 degrees on the outer periphery, and the peripheral edge of each blade body mounting portion 21 a. Chip-shaped rotary blades 24 and 25 made of hard metal are fixed to both ends in the direction via mounting bolts 26 and 26, respectively. In addition, the front end side of each rotation side blade body 24,25 comprises the trapezoid corresponding to the reverse trapezoid of the fixed side blade body 31 of the fixed blade tool 3, and the front end side of the blade body attaching part 21a is also a radial cross section according to this. It has the same trapezoidal shape, and the outer edge of the blade attachment portion 21 a is along an arc centered on the axis of the crushing roll 2.

  Thus, the paired crushing rolls 2 and 2 are fitted to the annular groove 23 formed by the outer peripheral portion of the annular spacer 22 on one side of each of the annular blades 21, and are rotated at the bottom of the groove. It arrange | positions so that the rotation side blade bodies 24 and 25 may pass close. Further, the fixed cutting tool 3 facing each crushing roll 2 is arranged so that each former annular cutting tool 21 and each latter fixed-side blade body 33 are in the same position in the axial direction of the crushing roll 2.

  On the other hand, the protruding edges 4a and 5a of the upper and lower scrapers 4 and 5 are set to concave arcs whose front end edges are slightly larger than the outer diameter of the annular spacer 22 around the axis of the crushing roll 2, The crushing roll 2 is inserted into the annular groove 23. Moreover, each groove part 4b, 5b of the upper-and-lower part scrapers 4 and 5 is set to a concave arc whose radius is larger than the radius in the blade body attaching part 21a of the annular blade 21 around the axis center of the crushing roll 2, The rotating blades 24 and 25 at the time of rotation are arranged so that the tips of the blades 24 and 25 pass through the groove bottom with a gap t (see FIG. 5). However, the fixed-side blade body 31 is disposed so as to protrude inward from the groove bottoms of the groove portions 4b and 5b of the upper and lower scrapers 4 and 5 so as to engage with the rotation-side blade bodies 24 and 25 when rotating. Yes.

  As shown in FIG. 5, the support block 17 has groove portions 17 a with arc bottoms that are continuous with the groove portions 5 b of the lower scraper 5 at the upper part of the front edge. Further, in the fixed-side blade body 31, the insertion portion (not shown) of the mounting bolts 16 a is a flawed hole, the mounting position is variable with respect to the support block 17 by the difference in diameter, and the lower frame body 12 from the outside is variable. By abutting the tip of the adjustment bolt 18 screwed into the side plate portion 12c, the mounting position can be adjusted in accordance with the type of workpiece and the degree of wear of the fixed side blade 31.

  In the composite biaxial crusher having the above configuration, both the crushing rolls 2 and 2 can be crushed in a slit cutter manner by rotating blades in the same manner as in the conventional twin-slit crusher by driving the crushing rolls 2 and 2 forward. , 2 reverse rotation drive enables the crushing type crushing by engaging the rotary blade and the fixed blade as in the conventional single-shaft crusher, so that the coarse workpiece can be finely processed by the two-stage process using the same crusher. It is possible to crush to the level.

  That is, in the first stage crushing process by the forward rotation drive of both crushing rolls 2 and 2, the crushing rolls 2 and 2 are arranged on the upper side of the mutual contact portion of each annular cutting tool 21 as shown by the solid line arrow a1 in FIG. It is rotationally driven in a direction in which the blade body attaching portions 21a and 21a are brought close to each other. Accordingly, the workpiece to be processed fed from above is crushed into a slit cutter type by being sandwiched between the rotary blades 24 and 24 that are close to each other and rub against each other on the center side of the crushing casing 1. The crushed material is discharged below the mutual contact portion of the two crushed rolls 2 and 2 as indicated by a solid arrow b1. Since this primary crushed material is slit cutter type crushing, it is only fine enough to pass through the annular groove 23... But this is received in a suitable container arranged below the outlet 1 b. After collection, both crushing rolls 2 and 2 are subjected to a second stage crushing process by reverse rotation driving.

  In this second stage crushing process, both crushing rolls 2, 2 separate the blade attachment parts 21a, 21a of the respective annular blades 21 on the upper side of the mutual contact parts as indicated by the phantom line arrow a2 in FIG. Rotation drive in the direction of Therefore, the primary crushed material thrown in from above is brought to the front and rear sides of the crushing casing 1 and into the groove 4b of the upper scraper 4 in a state where it enters the lower portion between the blade body attaching portions 21a, 21a of the respective annular blades 21. Although it falls, it is a crushing type between the stationary blade 31 and the rotating blade 25 approaching the stationary blade 31 in contact with the stationary blade 31 protruding inward from the groove 4b. As a secondary crushed material having a fine size, it is discharged downward on both the front and rear sides of the crushing casing 1 as indicated by a solid line arrow b2.

  In this second stage crushing process, the input primary crushed material is introduced from the central part of the crushing casing 1 to prevent it from falling uncrushed through the annular grooves 23 of the crushing rolls 2, 2. It is recommended to install a guide plate 19 having a mountain-shaped cross section as shown by a virtual line in FIG. 5 at the center of the mouth 1 a and distribute the primary crushed material to the front and rear sides of the crushing casing 1. On the other hand, on both the front and rear sides of the crushing casing 1, the protruding edges 4 a and 5 a of the scrapers 4 and 5 are fitted in the annular grooves 23 of the crushing roll 2 on the upper side and the lower side of each fixed blade 3. Both the crushing rolls 2 and 2 are prevented from falling through the annular grooves 23 while being crushed or insufficiently crushed during crushing by both forward and reverse rotations.

  Thus, according to the composite biaxial crusher of the present invention, a coarse workpiece can be crushed to a fine level by a two-stage process of forward and reverse rotation of both crushing rolls 2 and 2. Thus, it is not necessary to use a dedicated crusher for each crushing stage, and since this composite biaxial crusher itself is structurally simple, the equipment cost can be greatly reduced, and the installation spacer can be small, The space efficiency of the treatment facility can be increased. Of course, this composite biaxial crusher is intended for the object to be processed that does not require the above-described two-stage processing, and is similar to the conventional twin slit crusher or uniaxial crusher depending on the size of the object to be processed. The machine can be used for only one stage of processing.

  In addition, when sheets, films, strings, etc. are mixed in the object to be processed, these will be strip-shaped by slit cutting, so the conventional twin slit type crusher wraps around the crushing roll and has crushing capacity. However, the composite biaxial crusher of the present invention does not cause such a problem. That is, in this composite biaxial crusher, the crushing rolls 2 and 2 are crushed by the positive rotation drive, even if the sheet, film, string, etc. mixed in the material to be processed become a band. In order to wind around 2 and 2, after coming out below the crushing casing 1 through the annular groove 23, the rotation side blade body 24 of the crushing roll 2 and the fixed side blade body 31 of each fixed cutting tool 3 are engaged. Because it will pass through a large part, it will be cut short at this meshing part, making it impossible to wind. Therefore, according to this composite biaxial crusher, there is no need to preliminarily sort out and remove sheets, films, strings, etc. mixed in the object to be processed, and the processing by the conventional twin-slit crusher Compared with, it can realize a significant labor saving.

  In particular, in the composite biaxial crusher of the present embodiment, both crushing rolls 2 and 2 can be individually driven forward and reverse at variable speeds. If the rotational speeds of the rolls 2 and 2 are differentiated, a twisting action is generated at the meshing portions of the rotary blades 24 and 24, thereby further improving the cutting property. And in the crushing process which makes a difference in the rotational speed of both the crushing rolls 2 and 2 in this way, if the high-speed rotation side and the low-speed rotation side are periodically changed, the wear of the both crushing rolls 2 and 2 will occur. Can be equalized, stable crushing performance can be maintained, and durability of the whole crusher can be improved and maintenance can be reduced.

  Furthermore, in the composite biaxial crusher of the present embodiment, the crushing casing 1 is divided into upper and lower frame parts 11 and 12, and the upper frame part 11 can be removed integrally with the upper scraper 4. Can be easily maintained such as cleaning the inside including the vicinity of the fixed cutting tool 3 where removal of clogs, removal of clogging of workpieces, replacement of parts, and repairs.

  In addition, in this embodiment, each rotation-side blade body 24, 25 of the crushing roll 2 is composed of a chip-like independent member, and when the blade edge reaches the wear limit or breaks, only the blade bodies 24, 25 need to be replaced. Therefore, the maintenance cost is reduced and the replacement work is easy, and it is possible to replace the blade with an appropriate shape in accordance with the properties such as the type and hardness of the object to be processed. In particular, in the crushing process by the forward rotation drive of the both crushing rolls 2 and 2 as in the first stage rough crushing in the two-stage processing, the surface is smooth and hard as the rotary blades 24 involved in the crushing. For the object to be processed, for example, as shown in FIG. 7A, the tip side has an acute angle and is easy to bite, or for a smooth, light and soft object to be processed such as waste plastic, FIG. The crushing efficiency can be increased by using a shape with a stronger bite such as a claw shape shown in FIG.

  Note that, by providing the rotary blades 24 and 25 of the crushing roll 2 on the annular cutting tool 21 fitted to the rotary shaft body 2a as in the illustrated embodiment, the assembling and manufacturing of the crushing roll 2 is facilitated. However, the annular blade 21 may be divided into a plurality of pieces in the circumferential direction. Moreover, what integrated the annular blade 21 and the spacer 22 can also be used. In addition, about the detailed structure of the compound biaxial crusher of this invention, various design changes can be carried out besides embodiment.

It is a front view of the whole compound biaxial crusher concerning one embodiment of the present invention. It is a top view of the whole composite biaxial crusher. It is a top view of the crushing casing part of the composite biaxial crusher. It is a cross-sectional top view in the up-down direction intermediate part of the crushing casing part. It is a vertical side view of the crushing casing part. It is a vertical front view of the upper half part of the annular cutting tool used for the composite biaxial crusher. The modification of the rotation side blade body in the same annular blade is shown, (A) is a longitudinal front view of an annular blade main part provided with a rotation side blade body that is slightly biting, and (B) is a rotation side where biting is stronger. It is a vertical front view of the annular cutting tool principal part which provided the blade body.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Crushing casing 1a Input port 1b Outlet 11 Upper frame body 12 Lower frame body 2 Crushing roll 2a Rotating shaft body 21 Annular blade (attachment base material)
Reference Signs List 22 Spacer 23 Annular Groove 24, 25 Rotating Side Blade 3 Fixed Blade 31 Fixed Side Blade 4 Upper Scraper 4a Projecting Edge 4b Groove 5 Lower Scraper 5a Projecting Edge 5b Groove 7 Reversible Motor (Rotation Drive Unit)

Claims (6)

A crushing casing whose upper side is an input port for the object to be processed, a pair of crushing rolls arranged in parallel in the crushing casing in the horizontal direction, a rotation driving means for rotating the crushing rolls forward and backward, and both crushing rolls A pair of fixed blades fixed to the inner surface of the crushing casing and facing each other,
Each circumferential surface of each crushing roll is provided with a plurality of rotation side blades facing each of the crushing rolls in the forward and reverse rotation directions,
Each fixed cutting tool is provided with a plurality of fixed side blades corresponding to the rotation side blades facing the reverse rotation direction side of the opposing crushing roll,
By the forward rotation drive where the upper side of the mutual contact part of both crushing rolls is the biting side, the workpiece is roughly crushed between the rotating blades in a slit cutter manner, while the crushing rolls are driven reversely A compound biaxial crusher configured to crush and pulverize the workpiece between the rotating side blades of each crushing roll and the fixed side blades of each fixed cutting tool. Each crushing roll has a rotating shaft body, a plurality of annular blades having a rotating blade on the outer periphery are fitted at regular intervals via spacers, and an annular groove is formed on the outer periphery of each spacer,
The composite biaxial crusher according to claim 1, wherein the annular cutting tools in both crushing rolls are arranged so that the rotary blades are fitted in the annular grooves on the other side.   The composite biaxial crusher according to claim 2, wherein a scraper that fits into each annular groove of the crushing roll is fixed on the inner side of the crushing casing on the upper side and the lower side of each of the fixed cutting tools.   The composite biaxial crusher according to any one of claims 1 to 3, further comprising a rotation drive unit corresponding to each of the two crushing rolls.   The compound biaxial crusher according to any one of claims 1 to 4, wherein the crushing casing is divided into upper and lower frame portions that can be attached to and detached from each other. The compound biaxial crusher according to any one of claims 1 to 5, wherein each rotation-side blade body of the crushing roll is composed of a chip-like independent member screwed to the mounting base.

Images