JPH11216384A - Waste crushing apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a waste crushing apparatus changing the posture of a material to be treated from that at a time of previous intermeshing to improve next intermeshing. SOLUTION: In a waste crushing apparatus consisting of a square box-shaped casing opened up and down, two reversibly rotatable shafts arranged horizontally to the intermediate part of the casing in parallel to one sets of the copposed side walls thereof and made different in the number of rotations in mutually different directions, the disc-shaped main body parts attached to both shafts through spacers 11 at a right angle to the axes of the shafts and a plurality of blade parts 102 provided to the peripheral parts thereof and equipped with a plurality of rotary blades 10 formed so that the peripheral parts and the side surfaces of the blade parts are brought to a mutual slide contact state on both shafts, a reversing blade 2b is provided to the rear part in a forward rotary direction A of each of the blade parts in the rotary blade of at least either one of the shafts in a linear state forming an angle of +8 deg.-17 deg. in the forward direction with respect to the straight line L connecting a blade tip P and the center O of rotation.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a slitter-type waste crushing apparatus for crushing relatively bulky waste such as felled trees and stumps, construction waste, old tires, and flammable bulky waste.

[0002]

2. Description of the Related Art Conventionally, as this type of waste crushing apparatus, for example, a slitter type crusher described in Japanese Utility Model Publication No. 61-29481 is known. This slitter type crusher
A rectangular box-shaped casing whose top and bottom are open, two shafts arranged in a middle part of the casing in parallel and horizontally with a pair of opposed side walls and rotatable in different directions from each other; It consists of a disk-shaped main body attached with a spacer or a distance collar so as to make a right angle with the main body, and a plurality of blades provided on the periphery of the main body. A plurality of rotary blades are provided, and the workpiece to be supplied from above is cooperatively sheared and crushed while being moved between the both shafts by the rotary blades of both shafts.

[0003]

However, in the conventional waste crushing apparatus, the back of the blade, which also has a function of drawing the object to be processed between the two shafts, does not prevent the next blade from biting. Since it is formed in a curved shape that becomes lower as it goes backward in the rotation direction, for example, a roll pipe, a roll paper,
If a cylindrical workpiece such as a roll of vinyl is moved between the two axes in a state parallel to both axes, and the bite is not performed, the attitude of the workpiece may be changed by reversing the two axes. However, the posture cannot be changed by sliding down from the back of the blade portion, and the forward and reverse rotations of both shafts are repeated for a long time. Therefore, an object of the present invention is to provide a waste crushing apparatus capable of changing the posture of the object to be processed and changing the posture of the object to be engaged before to improve the next engagement, and thus to increase the throughput.

[0004]

In order to solve the above-mentioned problems, a waste crushing apparatus according to the present invention comprises a rectangular box-shaped casing whose top and bottom are opened, and a pair of side walls opposed to an intermediate portion of the casing. Two shafts which are arranged in parallel and horizontally, and which can rotate forward and backward by different rotation speeds in different directions;
Consists of a disk-shaped main body attached to both shafts with a spacer interposed at right angles to the axis and a plurality of blades provided around the periphery, and the peripheral portion and the side surfaces of the blades are two shafts. In a waste crushing apparatus having a plurality of rotary blades that are brought into sliding contact with each other, a reverse rotation blade is provided at a rear portion of the rotary blade of at least one of the shafts in the forward rotation direction of each blade portion, and the reverse rotation blade is provided. The cutting blade is provided in a straight line at an angle of + 8 ° to -17 ° in the normal rotation direction with respect to a straight line connecting the cutting edge and the rotation center.

[0005] In the above means, when the both shafts are rotated in reverse, the object to be processed can be scraped up by the reversing blade of the rotary blade. When the straight reversing blade makes an angle exceeding + 8 ° in the normal rotation direction with respect to a straight line connecting the blade tip and the rotation center, the blade of the blade portion becomes thinner, and its strength is reduced. On the other hand, if the angle is less than −17 ° in the normal rotation direction, the object to be processed is apt to slide down, and it is difficult to scrape up in the reverse rotation. The preferred angle of the reversing blade is between + 5 ° and -15 °, most preferably + 2.5 °. Further, it is preferable that the rotary blade having the reversing blade is attached to at least the low-speed side shaft.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. 1, 2, 3, 4, and 5 are a plan view, a side view, a front view, a rear view, and a VV line in FIG. 1 showing an example of an embodiment of a waste crushing apparatus according to the present invention. It is sectional drawing. In the figure, reference numeral 1 denotes a rectangular box-shaped casing whose top and bottom are open. The casing 1 includes a rectangular parallelepiped frame 2 and two pairs of opposed side walls 3 and 4 closing the sides. The casing 1 is mounted on a pedestal (not shown) equipped with a forward or backward transportable belt conveyor for transporting broken products or foreign matter. Above the casing 1, felled trees and stumps, construction waste, old tires And a hopper 5 into which relatively bulky waste such as combustible bulky waste is introduced as an object to be treated.

The interval between a pair of opposed side walls 3 (left and right side walls in FIG. 5) of the casing 1 is provided so as to gradually increase in width from an intermediate portion to a lower portion. In the part, two shafts 6 each having a rectangular intermediate portion are mounted on bearings 8 attached to the outside of a gear box 7 attached to one outside of the pair of side walls 4 and the other outside, respectively. It is rotatably supported, and is disposed in parallel with the pair of side walls 3 and horizontally. The two shafts 6 can be rotated forward (in the direction of arrow A in FIG. 5) or reverse (in the direction of arrow B in FIG. 5) in different directions by a gear train (not shown) in the gear box 7 and one (in FIG. 5). Is connected so as to be rotatable at a higher speed than the other, and one shaft 6 projects from a gear box 7 and is connected to a hydraulic motor 9. The drive source is not limited to the hydraulic motor 9, but may be another electric motor or engine that changes the direction or speed of rotation.

On both shafts 6, a disk-shaped rotary blade 10 serving as a slitter-type crushing means and a disk-shaped spacer 11 having a diameter smaller than that of the rotary blade 10 and having substantially the same thickness as the rotary blade 10 are provided. , Square mounting holes 12 and 13 provided in the respective central portions.
Are alternately fitted through the plurality of rotary blades 10.
Are mounted at right angles to the axis at substantially the same interval as the thickness thereof, and the rotating blade 10 of one shaft 6 and the spacer 11 of the other shaft 6 are provided so as to face each other in a direction orthogonal to the axis. I have. Each rotary blade 10 is formed in a disk-shaped main body 101 provided with the mounting hole 12, and is formed at a peripheral portion of the main body 101 so as to protrude radially outward at regular intervals in a circumferential direction, and is covered at the time of normal rotation. The blade 102 includes six blades 102 formed at the front in the forward direction with a straight forward blade 102a for shearing and crushing the processed material as described later.
Is provided so as to slidably contact the side surface of the main body 101 of the rotary blade 10 facing in a direction orthogonal to the axis.
Further, the blade portion 102 of the rotary blade 10 attached to the shaft 6 on the low-speed side.
As shown in FIG. 6, a linear reversing blade 102b is formed at the rear part in the normal rotation direction.
b forms an angle of 0 ° in the normal rotation direction with respect to a straight line L connecting the cutting edge P and the rotation center O of the rotary blade 10, that is,
It is provided so as to overlap a part of the straight line L. The normal rotation blade 102a of the blade portion 102 forms an angle of −5 ° to −20 ° in the normal rotation direction with respect to a straight line connecting the cutting edge and the rotation center.

[0009] As shown in FIG.
In order to smoothly discharge hard-to-crush foreign materials such as iron blocks and rocks,
A support shaft 14 supported at the lower part of the frame 2 in parallel with both shafts 6
The hydraulic cylinder 15 whose lower end is supported by the hydraulic cylinder 15 which pivotally supports the base end of the cylinder main body at the outer center of the lower part of the frame 2 and the distal end of the piston rod at the outer center of the upper part of the side wall 3, The frame 2 is provided so as to be rotatable outward around the support shaft 14, and a lower end thereof is provided with an overhang portion 3 a covering a part of the lower inner surface of the frame 2. A lock hole 16 is provided at the center of the upper part of the pair of side walls 3.
The lock hole 16 is provided with the frame 2.
A lock pin 18 movably provided in the upper center of the frame 2 by a hydraulic cylinder 17 erected in the upper center of the frame 2.
The lower end is provided so as to be able to be inserted in order to hold both side walls 3 in a closed state (the right side in FIG. 5). Further, a plurality of scrapers 19 for removing crushed debris adhered to the rotary blades 10 are attached to the inner side surfaces of both side walls 3 so as to be interposed between the rotary blades 10 adjacent in the axial direction. Is provided so as to approach the outer periphery of the spacer 11. 1 to 5, reference numeral 20 denotes a torque arm for supporting the hydraulic motor 9, 21 denotes a cover attached to the outside of the frame 2 so as to cover the side wall 3 during the opening operation (the left side in FIG. 5), and 22 denotes a cover. This is a cylinder cover attached to the upper part of the frame 2 so as to cover the hydraulic cylinder 17 for the lock pin 18.

[0010] In the waste crushing apparatus having the above-mentioned structure, the objects to be processed introduced from the hopper 5 are sheared and crushed by the cooperation of the rotating blades 10 of the two shafts which are rotated at different rotational speeds and fall down. Then, the cradle is conveyed to the outside as a crushed product by sequential feeding of the belt conveyor. During the crushing, the cylindrical workpiece is moved between the two shafts 6 in a state of being parallel to the two shafts 6, the load is reduced without being caught, the pressure or torque of the drive source is reduced, and the When it is determined that the processing object has a biting defect, the two shafts 6 are reversed for a required time, and the reversing blade 10 of the rotary blade 10 of the shaft 6 on the low-speed side is mainly used.
2b or the back of the rotary blade 10 of the shaft 6 on the high-speed side, the object to be processed is scraped up and moved to the outside of both shafts 6,
After the posture is changed, the two shafts 6 are rotated forward and the rotary blade 1 is rotated.
Good biting by 0 is performed. Also, when overload is applied to the rotary blade 10 during crushing, the pressure or torque of the driving source is increased, and it is measured that foreign matter is present in the object to be processed, the two shafts 6 are rotated for the required time. At the same time, the unlocking of the side wall 3 due to the upward movement of the lock pin 18 by the hydraulic cylinder 17 and the subsequent contraction operation of the hydraulic cylinder 15 cause the side walls 3 to rotate outward about the support shaft 14, and The belt conveyor of the gantry is operated in reverse. As a result of this operation, the foreign matter is mainly
The blade 102b of the rotating blade 10 or the back of the rotating blade 10 of the shaft 6 on the high-speed side moves up and out of the two shafts 6, and tilts as shown by a white arrow C in FIG. While falling on the side wall 3 which was made, it is guided by it and flows down to the belt conveyor of the gantry, and is conveyed to a place different from the broken product by the belt conveyor. Then, when the discharge of the foreign matter is completed, the belt conveyor is sequentially operated, and
The return rotation of the side wall 3 due to the extension operation of the hydraulic cylinder 15 and the subsequent lock pin 1 by the hydraulic cylinder 17
The side wall 3 is locked with the downward movement 8, and both shafts 6 are rotated forward, so that the object to be processed is sheared and crushed again.

In the embodiment described above, the straight reversing blade 102b of the rotary blade 10 attached to the shaft 6 on the low-speed side is replaced by a straight line connecting the cutting edge P and the rotation center O of the rotary blade 10. The case where L is provided at an angle of 0 ° in the normal rotation direction with respect to L has been described. However, the present invention is not limited to this. For example, as shown in FIG. 7 or FIG. Straight reversing blade 102 of rotary blade 10
b is provided at an angle of a maximum of 8 ° in the normal rotation direction or at an angle of a minimum of −17 ° in the normal rotation direction with respect to a straight line L connecting the cutting edge P and the rotation center O of the rotary blade 10. You may do so. The reversing blade 102b is not limited to being provided on the rotary blade 10 of the low-speed shaft 6, but may be provided on the rotary blade 10 of the high-speed shaft 6, or provided on the rotary blade 10 of both shafts 6. It may be. Further, the pair of side walls 3 is not limited to the case where it can be opened and closed, and the side walls may not be opened and closed.

[0012]

As described above, according to the waste crushing apparatus of the present invention, the object to be processed can be scraped up by the reversing blade of the rotary blade when the two shafts are rotated in reverse. As described above, the normal and reverse rotations are not repeated, and the posture of the object to be processed is changed from that at the time of the previous biting, so that the next biting can be improved, and the processing amount of the apparatus can be increased.

[Brief description of the drawings]

FIG. 1 is a plan view showing an example of an embodiment of a waste crusher according to the present invention.

FIG. 2 is a side view of the waste crushing apparatus of FIG.

FIG. 3 is a front view of the waste crusher of FIG. 1;

FIG. 4 is a rear view of the waste crusher of FIG. 1;

FIG. 5 is a sectional view taken along line VV in FIG. 1;

FIG. 6 is an enlarged explanatory view of a main part in FIG. 5;

FIG. 7 is an enlarged explanatory view of a main part showing another example of the embodiment of the waste crushing device according to the present invention.

FIG. 8 is an enlarged explanatory view of a main part showing still another example of the embodiment of the waste crushing apparatus according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Casing 3 Side wall 6 axis 10 rotary blade 101 main-body part 102 blade part 102a forward rotation blade 102b reverse rotation blade 11 spacer P cutting edge O rotation center L straight line A forward rotation B reverse rotation

[Procedure amendment]

[Submission date] January 21, 1999

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Full text

[Correction method] Change

[Correction contents]

[Document Name] Statement

[Title of the Invention] Waste crusher

[Claims]

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a slitter-type waste crushing apparatus for crushing relatively bulky waste such as felled trees and stumps, construction waste, old tires, and flammable bulky waste.

[0002]

2. Description of the Related Art Conventionally, as this type of waste crushing apparatus, for example, a slitter type crusher described in Japanese Utility Model Publication No. 61-29481 is known. This slitter type crusher
A rectangular box-shaped casing whose top and bottom are open, two shafts arranged in a middle part of the casing in parallel and horizontally with a pair of opposed side walls and rotatable in different directions from each other; It consists of a disk-shaped main body attached with a spacer or a distance collar so as to make a right angle with the main body, and a plurality of blades provided on the periphery of the main body. A plurality of rotary blades are provided, and the workpiece to be supplied from above is cooperatively sheared and crushed while being moved between the both shafts by the rotary blades of both shafts.

[0003]

However, in the conventional waste crushing apparatus, the back of the blade, which also has a function of drawing the object to be processed between the two shafts, does not prevent the next blade from biting. Since it is formed in a curved shape that becomes lower as it goes backward in the rotation direction, for example, a roll pipe, a roll paper,
If a cylindrical workpiece such as a roll of vinyl is moved between the two axes in a state parallel to both axes, and the bite is not performed, the attitude of the workpiece may be changed by reversing the two axes. However, the posture cannot be changed by sliding down from the back of the blade portion, and the forward and reverse rotations of both shafts are repeated for a long time. Therefore, an object of the present invention is to provide a waste crushing apparatus capable of changing the posture of the object to be processed and changing the posture of the object to be engaged before to improve the next engagement, and thus to increase the throughput.

[0004]

In order to solve the above-mentioned problems, a waste crushing apparatus according to the present invention comprises a rectangular box-shaped casing whose top and bottom are opened, and a pair of side walls opposed to an intermediate portion of the casing. Two shafts which are arranged in parallel and horizontally, and which can rotate forward and backward by different rotation speeds in different directions;
Consists of a disk-shaped main body attached to both shafts with a spacer interposed at right angles to the axis and a plurality of blades provided around the periphery, and the peripheral portion and the side surfaces of the blades are two shafts. In a waste crushing apparatus having a plurality of rotary blades that are brought into sliding contact with each other, a reverse rotation blade is provided at a rear portion of the rotary blade of at least one of the shafts in the forward rotation direction of each blade portion, and the reverse rotation blade is provided. The blade is provided in a straight line at an angle of + 5 ° to + 1 ° in the normal rotation direction with respect to a straight line connecting the cutting edge and the rotation center.

[0005] In the above means, when the both shafts are rotated in reverse, the object to be processed can be scraped up by the reversing blade of the rotary blade. When the straight reversing blade makes an angle exceeding + 5 ° in the normal rotation direction with respect to a straight line connecting the blade tip and the rotation center, the blade of the blade part becomes thinner and its strength is reduced. On the other hand, if the angle is less than + 1 ° with respect to the normal rotation direction, the object to be processed is liable to slide down, and it is difficult to scrape up in the reverse rotation. The preferred angle of the reversing blade is + 2.5 °. Further, it is preferable that the rotary blade having the reversing blade is attached to at least the low-speed side shaft.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. 1, 2, 3, 4, and 5 are a plan view, a side view, a front view, a rear view, and a VV line in FIG. 1 showing an example of an embodiment of a waste crushing apparatus according to the present invention. It is sectional drawing. In the figure, reference numeral 1 denotes a rectangular box-shaped casing whose top and bottom are open. The casing 1 includes a rectangular parallelepiped frame 2 and two pairs of opposed side walls 3 and 4 closing the sides. The casing 1 is mounted on a pedestal (not shown) equipped with a belt conveyor capable of transporting broken products or foreign matters in a forward or backward direction. And a hopper 5 into which relatively bulky waste such as combustible bulky waste is introduced as an object to be treated.

The interval between a pair of opposed side walls 3 (left and right side walls in FIG. 5) of the casing 1 is provided so as to gradually increase in width from an intermediate portion to a lower portion. In the part, two shafts 6 each having a rectangular intermediate portion are mounted on bearings 8 attached to the outside of a gear box 7 attached to one outside of the pair of side walls 4 and the other outside, respectively. It is rotatably supported, and is disposed in parallel with the pair of side walls 3 and horizontally. The two shafts 6 can be rotated forward (in the direction of arrow A in FIG. 5) or reverse (in the direction of arrow B in FIG. 5) in different directions by a gear train (not shown) in the gear box 7 and one (in FIG. 5). Is connected so as to be rotatable at a higher speed than the other, and one shaft 6 projects from a gear box 7 and is connected to a hydraulic motor 9. The drive source is not limited to the hydraulic motor 9, but may be another electric motor or engine that changes the direction or speed of rotation.

On both shafts 6, a disk-shaped rotary blade 10 serving as a slitter-type crushing means and a disk-shaped spacer 11 having a diameter smaller than that of the rotary blade 10 and having substantially the same thickness as the rotary blade 10 are provided. , Square mounting holes 12 and 13 provided in the respective central portions.
Are alternately fitted through the plurality of rotary blades 10.
Are mounted at right angles to the axis at substantially the same interval as the thickness thereof, and the rotating blade 10 of one shaft 6 and the spacer 11 of the other shaft 6 are provided so as to face each other in a direction orthogonal to the axis. I have. Each rotary blade 10 is formed in a disk-shaped main body 101 provided with the mounting hole 12, and is formed at a peripheral portion of the main body 101 so as to protrude radially outward at regular intervals in a circumferential direction, and is covered at the time of normal rotation. The blade 102 includes six blades 102 formed at the front in the forward direction with a straight forward blade 102a for shearing and crushing the processed material as described later.
Is provided so as to slidably contact the side surface of the main body 101 of the rotary blade 10 facing in a direction orthogonal to the axis.
Further, the blade portion 102 of the rotary blade 10 attached to the shaft 6 on the low-speed side.
As shown in FIG. 6, a linear reversing blade 102b is formed at the rear part in the normal rotation direction.
b, the the edge P to the straight line L connecting the rotation center O of the rotary blade 10 is kicked set <br/> at an angle of + 5 ° ~ + 1 ° in the forward direction. The forward rotation blade 102a of the blade portion 102
Is in the forward direction with respect to the straight line connecting the cutting edge and the center of rotation.
It forms an angle of 5 ° to -20 °.

[0009] As shown in FIG.
In order to smoothly discharge hard-to-crush foreign materials such as iron blocks and rocks,
A support shaft 14 supported at the lower part of the frame 2 in parallel with both shafts 6
The hydraulic cylinder 15 whose lower end is supported by the hydraulic cylinder 15 which pivotally supports the base end of the cylinder main body at the outer center of the lower part of the frame 2 and the distal end of the piston rod at the outer center of the upper part of the side wall 3, The frame 2 is provided so as to be rotatable outward around the support shaft 14, and a lower end thereof is provided with an overhang portion 3 a covering a part of the lower inner surface of the frame 2. A lock hole 16 is provided at the center of the upper part of the pair of side walls 3.
The lock hole 16 is provided with the frame 2.
A lock pin 18 movably provided in the upper center of the frame 2 by a hydraulic cylinder 17 erected in the upper center of the frame 2.
The lower end is provided so as to be able to be inserted in order to hold both side walls 3 in a closed state (the right side in FIG. 5). Further, a plurality of scrapers 19 for removing crushed debris adhered to the rotary blades 10 are attached to the inner side surfaces of the side walls 3 so as to be interposed between the rotary blades 10 adjacent in the axial direction. Is provided so as to approach the outer periphery of the spacer 11. In FIGS. 1 to 5, reference numeral 20 denotes a torque arm supporting the hydraulic motor 9, reference numeral 21 denotes a cover attached to the outside of the frame 2 so as to cover the side wall 3 at the time of the opening operation (left side in FIG. 5), and reference numeral 22 denotes This is a cylinder cover attached to the upper part of the frame 2 so as to cover the hydraulic cylinder 17 for the lock pin 18.

[0010] In the waste crushing apparatus having the above-mentioned structure, the objects to be processed introduced from the hopper 5 are sheared and crushed by the cooperation of the rotating blades 10 of the two shafts which are rotated at different rotational speeds and fall down. Then, the cradle is conveyed to the outside as a crushed product by sequential feeding of the belt conveyor. During the crushing, the cylindrical workpiece is moved between the two shafts 6 in a state of being parallel to the two shafts 6, the load is reduced without being caught, the pressure or torque of the drive source is reduced, and the When it is determined that the processing object has a biting defect, the two shafts 6 are reversed for a required time, and the reversing blade 10 of the rotary blade 10 of the shaft 6 on the low-speed side is mainly used.
2b or the back of the rotary blade 10 of the shaft 6 on the high-speed side, the object to be processed is scraped up and moved to the outside of both shafts 6,
After the posture is changed, the two shafts 6 are rotated forward and the rotary blade 1 is rotated.
Good biting by 0 is performed. In addition, when overload is applied to the rotary blade 10 during crushing, the pressure or torque of the driving source is increased, and it is measured that foreign matter is present in the object to be processed, the two shafts 6 are rotated in the required time. At the same time, the unlocking of the side wall 3 due to the upward movement of the lock pin 18 by the hydraulic cylinder 17 and the subsequent contraction operation of the hydraulic cylinder 15 cause the side walls 3 to rotate outward about the support shaft 14, and The belt conveyor of the gantry is operated in reverse. As a result of this operation, the foreign matter is mainly
The blade 102b of the revolving blade 10 or the back of the revolving blade 10 of the shaft 6 on the high-speed side moves up and out of the two shafts 6, and tilts as shown by a white arrow C in FIG. While falling on the side wall 3 which was made, it is guided by it and flows down to the belt conveyor of the gantry, and is conveyed to a place different from the broken product by the belt conveyor. Then, when the discharge of the foreign matter is completed, the belt conveyor is sequentially operated, and
The return rotation of the side wall 3 due to the extension operation of the hydraulic cylinder 15 and the subsequent lock pin 1 by the hydraulic cylinder 17
The side wall 3 is locked with the downward movement 8, and both shafts 6 are rotated forward, so that the object to be processed is sheared and crushed again.

[0011] Incidentally, contrary diversion blade 102b is the low-speed shaft 6
Not only on the rotary blade 10 of the shaft 6 but also on the rotary blade 10 of the shaft 6 on the high-speed side.
May be provided. Also , the pair of side walls 3 is not limited to the case where the side walls 3 are provided so as to be openable and closable, and the side walls may not be opened and closed.

[0012]

As described above, according to the waste crushing apparatus of the present invention, the object to be processed can be scraped up by the reversing blade of the rotary blade when the two shafts are rotated in reverse. As described above, the normal and reverse rotations are not repeated, and the posture of the object to be processed is changed from that at the time of the previous biting, so that the next biting can be improved, and the processing amount of the apparatus can be increased.

[Brief description of the drawings]

FIG. 1 is a plan view showing an example of an embodiment of a waste crusher according to the present invention.

FIG. 2 is a side view of the waste crushing apparatus of FIG.

FIG. 3 is a front view of the waste crusher of FIG. 1;

FIG. 4 is a rear view of the waste crusher of FIG. 1;

FIG. 5 is a sectional view taken along line VV in FIG. 1;

FIG. 6 is an enlarged explanatory view of a main part in FIG. 5;

[Description of Signs] 1 Casing 3 Side wall 6 Shaft 10 Rotating blade 101 Main body 102 Blade 102a Forward blade 102b Reverse blade 11 Spacer P Cutting edge O Center of rotation L Straight line A Forward B Reverse

[Procedure amendment 2]

[Document name to be amended] Drawing

[Correction target item name] All figures

[Correction method] Change

[Correction contents]

FIG.

FIG. 2

FIG. 6

FIG. 3

FIG. 4

FIG. 5

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Masahiko Nishi 1780 Kamikono, Yachiyo-shi, Chiba Kawasaki Heavy Industries Ltd.Yachiyo Plant (72) Inventor Takashi Kijima 1780 Kamikono, Yachiyo-shi, Chiba Kawasaki Heavy Industries, Ltd. Yachiyo factory

Claims (1)

[Claims] 1. A casing in the shape of a rectangular box whose top and bottom are open, and disposed in a middle portion of the casing in parallel and horizontal with a pair of side walls facing each other, and having different rotation speeds in different directions to be positive and negative. It consists of two reversible shafts, a disk-shaped main body attached to both shafts with a spacer interposed therebetween so as to be perpendicular to the axis, and a plurality of blades provided around the periphery. In a waste crushing device comprising a plurality of rotary blades such that the side surfaces of the portions are in sliding contact with each other, the rear portion of each blade portion in the normal rotation direction of the rotary blade of at least one of the shafts A reversing blade is provided, and the reversing blade moves in a forward direction with respect to a straight line connecting the cutting edge and the rotation center.
A waste crushing device characterized by being provided in a straight line at an angle of 8 ° to -17 °.