JPH04235752A - Disc type crusher - Google Patents

Abstract

PURPOSE:To provide a structure preventing the partial abrasion of the fixed crushing plate of a disc type crusher having a horizontal shaft line. CONSTITUTION:In order to make the position of a crushing pate 13 on a fixed side in the peripheral direction thereof alterable, the cylindrical through 23 fixed to a back plate 15 is supported by a radial roller 24 and a thrust roller 25 and a support shaft 29, a pair of gears 32, 33 an operation shaft 34 and a handle 36 are provided as the drive apparatus driving the lower radial roller 24 to make the crushing plate 13 on the fixed side rotatable and, further, the mixing device of the crushing plate 13 is provided. The fixing device is provided so that a pin 27 can be inserted in and taken out of the indexing hole 26 provided to the back plate 25.

Description

[Detailed description of the invention]

0001

[Field of Industrial Application] The present invention relates to a crusher for obtaining sand by crushing raw materials, such as crushed stone, and more particularly to a disk crusher for pressing disc-type crushing plates against each other and crushing the raw material between the pressed surfaces. be.

0002

BACKGROUND OF THE INVENTION Conventionally, impact crushers have been used to obtain sand from pebbles, crushed stones, etc. (hereinafter referred to as raw materials). However, when the raw material is crushed with an impact crusher, it is broken according to the crystals, resulting in sand with many angular or flat particles. Therefore, further cornering is required.

On the other hand, by pressing the crushing plates against each other in a stone mill style and rotating them relative to each other, and passing the raw material between the pressed surfaces,
A crusher for crushing raw materials is illustrated in Japanese Utility Model Application Publication No. 2-40447. The crusher illustrated in this publication has a horizontal shaft and one of the crushing plates is driven to rotate, a through hole provided in the center is used as a raw material inlet, and a raw material supply device to the raw material inlet is provided, and the other crushing plate is driven to rotate. The supporting portion of the other rotationally driven crushing plate is moved in the axial direction by a pressurizing device to reduce the pressing force between the pair of crushing plates. The crushing plate used has a number of hardened steel strips hardened with cement so that the side edges of the blades are exposed at the end faces of the crushing plate.

0004

[Problem to be solved by the invention] There is a gap of 3 to 5 mm between the crushed plates, and raw materials with a larger particle size will resist the pressure of the pressurizing device and try to spread between the crushed plates. While moving between the crushing plates, the hardened steel strip is crushed by the blades of the hardened steel strip, and is also chamfered at the same time by friction with the cement. This produces high-quality sand with fewer angular or flat particles that are produced by impact crushers.

However, in order to drive both crushing plates together,
Since there are multiple drive devices for the crushing plates, the machine becomes complicated and large, and the installation floor space becomes large. Therefore, by fixing one of the crushing plates, there is only one driving device for the crushing plate, which makes the machine simpler and requires less floor space. If one of the crushing plates is fixed on the horizontal axis, the supplied raw material will first easily enter the lower part of the opposing surface of the crushing plate because it is on the horizontal axis, and the fixed crushing plate will break in this area. This results in uneven wear, resulting in a decrease in performance and the inability to obtain the desired particle size.

SUMMARY OF THE INVENTION The object of the present invention is to provide a disk type crusher in which one of the pair of crushing plates is fixed on the horizontal shaft, which does not have the above-mentioned drawbacks.

[0007]

[Means for Solving the Problems] A first aspect of the present invention is to provide a pair of disc-shaped fractures, one of which is rotationally driven about a horizontal axis and the other of which is fixed and supported so that their end faces are in pressure contact with each other. In a disc type crusher equipped with plates, a raw material inlet provided at the center of one of the crushing plates, and a raw material supply device to the raw material inlet, the circumferential position of the fixed crushing plate can be adjusted. This is a disk-type crusher featuring the following.

[0008] A second aspect of the present invention is characterized in that two pairs of crushing plates are arranged side by side, and the two inner crushing plates facing each other on the back surfaces of different pairs of crushing plates are coaxially fixedly supported. It is a disk type crusher according to the first invention.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a longitudinal sectional view of an embodiment of the present invention. In this embodiment, the fixed side crushing plates of each pair of crushing plates that are in pressure contact with each other are integrally fixed.

A carriage 2 is provided on the machine base 1 so as to be slidable in the left and right direction, and a piston rod of a hydraulic or pneumatic cylinder 3 fixed on the machine base 1 is fixed to the carriage 2. ing. A horizontal rotating shaft 5 is supported by a bearing 4 fixed on the carriage 2 so as not to move in the axial direction. A belt 8 is connected between the pulley 6 and pulley 7 fixed to the rotating shaft 5.
is wound around the pulley 7, and the pulley 7 has an axis 9 parallel to the rotation axis 5.
are fitted to be movable in the axial direction via a sliding key (not shown). The shaft 9 is supported by a bearing (not shown), and is given rotational force by a belt device 12 from an electric motor 11 . An outer crushing plate 14 is fixed to the rotating shaft 5 and is pressed against an inner crushing plate 13.

[0011] In the above, the crushing plates 13 and 14 have almost the same configuration, and the inner and outer cylinders 16 and 17 are fixed to the back plate 15.
, 17 are partitioned by a radial partition plate 18 and spaced equally in the circumferential direction, and a large number of hardened steel strip blades 19 are provided parallel to the partition plate 18 on the same side of each partition plate 18. Concrete 21 is filled between 19 and hardened. In the above blade 19
The inner and outer crushing plates 13 and 14 are parallel to each other in order from opposite different sides with respect to the partition plate 18 so as to always intersect when seen in an overlapping state. A raw material inlet 22 is provided only on the back plate of the crushing plate 13.

[0012]Although not shown, a stopper (not shown) is provided to determine the forward limit of the carriage 2, and the stopper is movable so as to maintain a constant gap between the crushing plates 13, 14 (not shown). ).

A cylindrical trough 23 is fixed to the inner crushing plate 13 and is concentric with the rotating shaft 5 that supports the outer crushing plate 14 . The trough 23 has three or more radial rollers 24 and thrust rollers 25 arranged at equal intervals around the trough 23, and the trough 23 has a radial roller 2 rotatably supported on the machine base 1.
4. It is rotatably supported by the thrust roller 25 and fixed by a releasable fixing device. The fixing device is, for example, a pin 27 that is slidably provided on a bracket 28 fixed to the machine base 1, which can go in and out of index holes 26 arranged at eight equal intervals in the circumferential direction of the back plate 15 of the inner crushing plate 13. , If necessary, a means for fixing the pin 27 is further provided.

Radial roller 2 below the trough 23
A support shaft 29 to which 4 is fixed is rotatably supported by a bearing 31 provided on the machine base 1. Gear 3 fixed to support shaft 29
A gear 33 that meshes with 2 is fixed to an operating shaft 34. The operating shaft 34 is supported by a bearing 35 provided on the machine base 1, and is provided with a handle 36 at the end.

The axially intermediate portion of the trough 23 is provided with eight raw material communication ports 37 equally spaced in the circumferential direction, and each communication port 37 can be sealed with a removable cover 38.
It is closed except for a raw material communication port 37 that coincides with a hopper 39 provided at the top.

A guide conical trough 59 is provided at the axial center of the raw material communication port 37 with the center of the trough 23 as its center. The gutter 59 is shaped like an abacus ball, and its outer periphery is fixed to the trough 23. The guide conical gutter 59 is provided with guide plates 40 radially.
0 are equally distributed in the circumferential direction of the trough 23 so as to be near both edges of the raw material communication port 37.

In this embodiment, it is preferable that the left and right outer crushing plates 14 rotate at the same speed in opposite directions. By doing so, the rotational force applied to the inner crushing plate 13 is canceled, and the method of supporting and fixing the inner crushing plate 13 becomes easy.

The operation of the above configuration will be explained. When the electric motor 11 is energized, the electric motor 11 rotates the shaft 9 via the belt device 12 and transmits rotational force to the pulley 7. The pulley 7 rotates the pulley 6 via the belt 8 to rotate the rotating shaft 5. The crushing plate 14 rotates due to the rotation of the rotating shaft 5. The fluid pressure cylinder 3 is energized to move the carriage 2 forward and crush the crushing plate 13.
, 14 at predetermined intervals, the raw material supplied from the hopper 39 enters the trough 23 from the raw material communication port 37 at the top, and is divided into left and right by a guide conical gutter 59 and directed diagonally in the axial direction. The material enters between the crushing plates 13 and 14 from the raw material inlet 22, and crushing is performed, and the crushing plate 1
3 and 14 to the outer periphery, the product is discharged, passes through the exit hopper 41, falls onto the conveyor 42, and is carried out. Since the fixed crushing plate 13 causes uneven wear, its position in the circumferential direction is changed at appropriate intervals. To do this, when the pin 27 is removed from the index hole 26 and the handle 36 is rotated, the operating shaft 34 is rotated and the gear 33 is rotated. gear 3
3 rotates the gear 32 and rotates the support shaft 29, so the radial roller 24 rotates, rotates the trough 23, changes the circumferential position of the inner crushing plate 13 fixed to the trough 23, and rotates the pin 27. into the index hole 26. During the above operation, the cover 38 that matches the hopper 39 is removed in advance, and the raw material communication port 37, which is located at the hopper 39 position and has come off, is closed with the cover 38.

Although the pressurizing device of the embodiment uses a fluid pressure cylinder, a spring may be provided to move the carriage forward.

Next, the case where there is one pair of crushing plates will be described. In this case, a configuration in which the left and right sides are separated in the center as in the previous embodiment can be considered, but this embodiment differs from the previous embodiment in the raw material supply device, and includes a support device and a drive device for the crushing plate that is rotatably driven, and a pressurizing device. Since the device, the product conveyance device, and the supporting and fixing device for the crushing plate on the stationary side are the same as those in the previous embodiment, the same functional parts are given the same reference numerals and explanations will be omitted, and a different raw material supply device will be explained.

A rotating shaft 46 of a screw blade 45 is supported by a bearing 44 provided in a conveyor case 43 provided on the machine base 1.
A sprocket wheel 47 is fixed to the end of the rotating shaft 46, and a chain 51 is hung between the sprocket wheel 47 and a sprocket wheel 49 fixed to the end of the output shaft of a motor 48 provided on the machine base 1. The conveyor case 43 has a cylindrical shape surrounding the screw blade 45, and a hopper 39 communicating with the conveyor case 43 is provided in the upper part of the conveyor case 43.

In the above, the screw blade 45, the conveyor case 43, and the hopper 39 constitute a raw material supply device. When the electric motor 48 is energized, the electric motor 48 rotates the sprocket wheel 49, and the rotation is transmitted to the sprocket wheel 47 via the chain 51, which rotates the rotating shaft 46. The rotating direction of the rotating shaft 46 is the direction in which the screw blades 45 feed the raw material toward the raw material inlet 22. The screw blade 45 sends the raw material input from the hopper 39 to the raw material inlet 22,
The raw material that enters the center between the crushing plates 13 and 14 from the raw material inlet 22 and falls downward enters between the end faces of the crushing plates 13 and 14, and is mainly crushed and rounded by the blade 19. The product sand coming out from the outside falls from the outlet hopper 41 onto the conveyor 42 and is carried out.

In each of the previous embodiments, the raw material supply device was provided on the fixed crushing plate side, but the raw material supply device may be provided on the driving crushing plate side.

[0024]

Effects of the Invention As explained above, the disk type crusher of the present invention has one of the pair of crushing plates fixed, which is simple, has low equipment cost, and requires a small installation area. Since the circumferential position of the plate can be changed, uneven wear of the fixed crushing plate can be eliminated.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view of an embodiment of the invention.

FIG. 2 is a front view of the crushing plate.

FIG. 3 is a longitudinal sectional view of another embodiment.

[Explanation of symbols]

5 Rotation axis 13,14 Crushing plate 22 Raw material inlet 23 Trough 24 Radial roller 25 Thrust roller

Claims (2)

[Claims] Claim 1: Comprising a pair of disc-shaped crushing plates, one of which is rotationally driven about a horizontal axis and the other of which is fixed and supported so that their end faces are in pressure contact with each other, the center of either of the crushing plates being 1. A disk type crusher comprising a raw material inlet and a raw material supply device to the raw material inlet, characterized in that the position of a fixed crushing plate in the circumferential direction can be adjusted. 2. The crushing plate according to claim 1, wherein two pairs of crushing plates are arranged side by side, and two inner crushing plates facing each other are coaxially fixedly supported on the back surfaces of different crushing plate pairs. Disc type crusher.