JPH0376183B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a disk-type crusher used for crushing wood, waste plastics, and the like.

<Prior Art> Conventionally, there are crushers as shown in Figs. 8 and 9 (Patent Application Publication No. 58-500890). This crusher includes a casing 3 fixed to a base 4 and having an input port 1 and a discharge port 2, and screws 5a, 5b, 5c rotatably mounted in parallel in the casing 3 at regular intervals. ，
... and a drive motor 6 which is connected to the screws 5a, 5b, 5c, . . . and rotates the screws 5a, 5b, 5c, . And 1
A spiral cutting blade 8a is formed on the outer surface of the shaft 7a of the screw 5a in a right-handed manner at a constant pitch.
A spiral cutting blade 8b is formed on the outer surface of the shaft 7b of the second screw 5b in a right-handed manner with the same pitch as above, and a spiral cutting blade 8c is formed on the outer surface of the shaft 7c of the third screw 5c. is formed in a left-handed manner with the same pitch as above.

Then, the first screw 5a is rotated counterclockwise and the second
By clockwise rotation of the third screw 5b and clockwise rotation of the third screw 5c, the tree stocks 9, 9, ... drawn in between the screws 5a, 5b, 5c, ... from the input port 1 of the casing 3 are compressed. After cutting, it is made into small pieces and discharged from the discharge port 2.

<Problems to be Solved by the Invention> However, in the above conventional crusher, the number of cuts made by the opposing cutting blades 8a, 8b, 8c in one rotation of the screws 5a, 5b, 5c, . . . is one.
There is a problem that the number of times of crushing is small relative to the number of rotations of the screws 5a, 5b, 5c, . Further, in the conventional crusher described above, it is difficult to manufacture the cutting blades 8a, 8b, 8c in a spiral shape, and it is difficult to fix the cutting blades 8a, 8b, 8c to the shafts 7a, 7b, 7c. Therefore, screws 5a, 5b, 5
There is a problem in that it takes time and effort to manufacture c, . . . and increases the manufacturing cost.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a disk type crusher that is easy to manufacture and has high crushing efficiency by making the number of crushing times of opposing cuts at least two per rotation of the rotating shaft.

<Means for Solving the Problems> In order to achieve the above object, the disc type crusher of the present invention includes a casing having an input port and a discharge port, and a casing rotatably attached to the casing,
at least two opposing rotating shafts that rotate in synchronization with each other, and fixed to the outer peripheral surface of each of the rotating shafts,
and a cutting ring having the same inclination angle at a certain rotation angle of the rotating shaft.

<Operation> Wood, waste plastic, etc. are fed between the input port of the casing and the rotating shaft. This will be explained with reference to FIG. Both rotating shafts 15, 16 have a cutting effect on each other. Focusing on the opposing cutting rings 25A and 25B, they are cut and crushed by shearing once while rotating 180° from the initial position with the same inclination angle, and are similarly sheared once while rotating from 180° to 360°. Performs cutting and crushing. Waste materials, wood, plastics, etc. are compressed and crushed by the cutting ring into fine pieces, and then discharged from the outlet of the casing.
In this way, the wood or the like is cut twice or more in one rotation of the rotating shaft, so that the crushing efficiency is increased.

<Examples> The present invention will be described in detail below with reference to illustrated examples.

In FIGS. 1 and 2, 11 is a casing having an inlet 12 and an outlet 14, 15 and 16 are a pair of rotating shafts provided in the casing 11, and 17
is a drive motor that rotates the rotating shaft 15.

The input port 12 of the casing 11 is formed into a funnel shape with a rectangular cross section, as shown in FIG.
The discharge port 14 is formed to have a rectangular cross section. Both sides of the crushing part 13 of the casing 11 between the input port 12 and the discharge port 14 are formed into a semi-cylindrical shape. Inside the crushing part 13 of the casing 11 is a rotating shaft 1.
5 and 16 are arranged parallel to each other within the same horizontal plane. Both ends of each of the rotating shafts 15 and 16 are rotatably supported by bearings at the end of the casing 11, one end of one of the rotating shafts 15 is made to protrude from the casing 11, and a pulley 18 is fixed to this one end. This pulley 18 and the drive pulley of the drive motor 17 are connected by a belt 21. Further, the other end of the rotating shaft 15 protrudes from the casing 11, and a gear 22 is fixed to this other end. Further, one end portion of the other rotating shaft 16 is made to protrude from the casing 11, a gear 23 is fixed to this one end portion, and this gear 23 meshes with the gear 22 of the one rotating shaft 15. By doing so, the rotating shafts 15 and 16 rotate synchronously at the same rotational speed.

On the other hand, a plurality of cutting rings 25, 25, . . . made of plate material are fixed to the outer circumferential surfaces of the rotating shafts 15, 16 in parallel with each other at a constant interval and at a constant inclination angle by welding or the like. As shown in FIGS. 1 and 3, the opposing cutting rings 25, 25, . I try to leave time. Cutting ring 2 of the rotating shafts 15 and 16
There is a slight space between the outer circumferential portions of 5, 25, . . . and the inner circumferential surface of the fractured portion 13 of the casing 11. Further, the opening of the input port 12 of the casing 11 is opened only on the opposite sides of the rotating shafts 15 and 16, and the solid lines in FIGS. As shown by the arrow,
Rotate the rotating shafts 15 and 16 inward to open the input port 12.
The wood, etc. from the outside is guided only between the rotating shafts 15, 16, and does not go around between the rotating shafts 15, 16 and the casing 11, so that no force is applied to the casing 11 from the wood, etc.

Next, the operation of the disk crusher having the above configuration will be explained. First, a pair of cutting rings 2 shown in FIG.
The operation of only 5A and 25c will be explained. Assume that the pair of cutting rings 25A and 25C are parallel to each other and the rotation angle is 0°, and that the rotating shafts 15 and 16 rotate in opposite directions and the cutting ring 25A and 25C are parallel to each other and the rotation angle is between 0° and 180°. After 25C approached, they separated and crossed each other once, and when the rotation angle was between 180° and 360°, they approached again, then separated and crossed each other once, and in the end,
The wood or the like is crushed twice by one rotation of the rotating shafts 15 and 16. Furthermore, when the cutting ring 25C on one rotating shaft 15 side is pushing the wood, etc. to the left, the cutting ring 25A on the other rotating shaft 16 side is pushing the wood, etc. to the right, so the force applied to the wood cancels out. Therefore, the force applied to the end of the casing is eliminated, and its wall thickness can be reduced.

Next, the operation of a combination of one cutting ring and three cutting rings will be explained. As shown in FIGS. 3 to 7, the rotating shafts 15 and 16 rotate in opposite directions to each other, and when the rotation angle is between 0° and 90°, the cutting rings 25A and 25C approach each other. Crushing is carried out at 25A and 25C. Further, when the rotation angle is between 90° and 180°, the cutting rings 25A and 25C separate, but the cutting rings 25A and 25D approach each other, and the cutting is performed by both the cutting rings 25A and 25D. Furthermore, when the rotation angle is between 180° and 270°, the cutting rings 25A and 25D separate, but the cutting rings 25A and 25C approach each other, and the cutting rings 25A and 25C perform crushing, and the rotation angle increases.
Between 270° and 360°, the cutting rings 25A and 25C separate, but the cutting rings 25A and 25B approach to perform crushing. As a result, the wood or the like is crushed four times in one rotation of the rotating shafts 15 and 16.

In this way, since the crushing process is performed four times during one rotation of the rotating shafts 15 and 16, crushing efficiency can be improved. In addition, the plate-shaped cutting rings 25, 25, ... can be manufactured more easily than screw blades, and the rotating shaft 1
5, 16 can be easily fixed.

<Effects of the Invention> As is clear from the above description, the disc type crusher of the present invention includes a casing having an input port and a discharge port, and at least two mutually synchronous The cutting ring is fixed to the outer peripheral surface of each of the rotating shafts and has the same inclination angle at a certain rotation angle of the rotating shaft, so that the crushing process is performed at least twice per rotation. The crushing efficiency can be improved. Furthermore, since the disc type crusher of the present invention has the cutting ring fixed to the outer peripheral surface of the rotating shaft, there is no need to form the cutting blade into a spiral shape as in the conventional example, and the machine can be manufactured easily and inexpensively.

[Brief explanation of drawings]

Fig. 1 is a plan view showing one embodiment of the present invention, Fig. 2 is a perspective view of the above embodiment, Figs. 3 to 7 are explanatory diagrams of the engaged state of the cutting ring, and Figs. 8 and 9. 1 is a diagram showing a conventional example. DESCRIPTION OF SYMBOLS 11... Casing, 12... Inlet, 14... Outlet, 15, 16... Rotating shaft, 25... Cutting ring.

Claims (1)

[Claims] 1. A casing having an input port and a discharge port, at least two opposing rotating shafts that are rotatably attached to the casing and rotate in synchronization with each other, and fixed to the outer peripheral surface of each of the rotating shafts, A disc crusher characterized by comprising a cutting ring having a rotation angle and a cutting ring having the same inclination angle.