JPH022431Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an improvement of an impact crusher for crushing rocks and the like.

[Prior Art] As shown in FIG. 1, a conventional impact type crusher has a striking plate holding member 1 supported by a rotor main shaft 2, and striking plates are arranged at equiangularly spaced positions in the circumferential direction of the striking plate holding member 1. A rotor 4 holding a rotor 3 is disposed in the center of a casing 5, an input port 6 for materials to be crushed is provided at the top of one side of the casing 5, and the other side and top surface of the casing 5 are integrally rotated outward. The collision plate 7 corresponding to the striking plate 3 is rotatable in parallel with the upper surface of the rotatable casing 5, and the rotation circle 3a of the striking plate 3 is
The gap s between the two is adjustable, and the rotor 4 is rotated in the normal direction as shown by the arrow to crush the object.

[Problem to be solved by the invention] By the way, this impact type crusher can only rotate the rotor 4 in one direction, so if the striking plate 3 is worn out, the machine is stopped and the striking plate 3 is rotated.
had been reversed or replaced. The collision plate 7 also wears out and needs to be replaced. During this replacement, a considerably strong impact force was applied to the collision plate 7, resulting in deformation of the pin 9 and the adjuster rod 10, which required a great deal of effort to remove. While the striking plate 3 is being reversed or replaced in this way, the machine is at rest, and the operating rate of the machine is reduced.

Further, since the rotor 4 only rotates in the forward direction, as the striking plate 3 wears, the crushed particle size decreases and the amount of products decreases. Furthermore, the input port 6 for the material to be crushed
is provided at the upper part of one side of the casing 5, so the falling speed of the crushed material to be thrown in is low.
The penetration depth of the striking plate 3 of the object to be crushed into the rotating circle 3a is shallow. Therefore, the upper part of the striking plate 3 is hit more often, and the striking plate 3 is worn in a large curve. As a result, there is less opportunity to hit the object to be crushed with the true core, the number of chips increases, and the impact crushing efficiency decreases. For this reason, either replace the striking plate 3 or
Alternatively, it is common to separately attach a collision plate 7 below the rotor center line, and to reduce the gap between the collision plates 7 to assist in impact crushing efficiency. (For example, see Utility Model Publication No. 41-18875.) If the upper part of the striking plate 3 wears in a large curve as described above, reducing the equal distribution of the striking plate 3 will reduce the wear of the striking plate 3 to approximately the same level in the thickness direction. However, since the number of striking plates is reduced, the striking plate replacement cycle is naturally shortened. Also, the rotating circle 3 of the striking plate 3 of the object to be crushed
In order to deepen the penetration depth into a, it is necessary to accelerate the object to be crushed by an external force. Further, if the material to be crushed contains a large amount of water or is sticky, the material to be crushed is likely to adhere to the inlet chute and the like.

Therefore, the present invention improves the operating rate of the machine by reducing the frequency of replacement of the impact plate and making it easier to replace the collision plate, and also increases the input amount of materials to be crushed and the amount of crushing processing, thereby improving impact crushing efficiency. The purpose of this project is to provide an impact-type crusher that has the following features.

[Means for Solving the Problems] In order to solve the above problems, the impact crusher of the present invention has a striking plate holding member supported by a rotor main shaft, and positions of the striking plate holding member at equiangular intervals in the circumferential direction. A rotor holding a striking plate with thicker plates at both top and bottom tips is placed in the center of the casing, and an inlet for the material to be crushed is provided at the center of the upper surface of the casing, and the material to be crushed is placed vertically above the rotor. The upper half of the left and right sides of the casing can be rotated outward.
Collision plates corresponding to the striking plate are disposed in upper and lower halves of the left and right upper halves of the rotatable casing, respectively, in a manner that they can be rotated and that the gap between the striking plate and the rotation circle of the striking plate can be adjusted. The lower end of the lower collision plate of the collision plates is located near a horizontal line passing through the center of the rotor, and the rotor is rotated forward and backward to crush the object to be crushed. That is.

[Operation] The impact type crusher configured as described above rotates the rotor at high speed, and continuously inputs a large amount of material to be crushed into the crusher directly above the rotor from the input port provided at the center of the upper surface of the casing. The object to be crushed is struck by a striking plate held by the rotor, and the collision with one side of the collision plate is repeated continuously, and the object is gradually crushed by impact, and eventually the tip of the striking plate and the collision plate The particles are ground to the required particle size in the gap between the lower end and the particles are discharged downward.

Due to continuous impact crushing over a long period of time, the amount of wear on the striking plate exceeds a certain value, and the slippage between the object to be crushed and the striking surface becomes normal, the crushed particle size decreases, and the wear on the striking plate accelerates. If it starts to increase to
The rotor is rotated in the opposite direction, and the material to be crushed, which is introduced into the crusher from the input port, is struck by the opposite side of the striking plate and collided with the other side of the collision plate, which is repeated continuously to gradually impact the material. The particles are crushed and eventually ground to a desired particle size in the gap between the tip of the impact plate and the lower end of the impact plate, and are discharged downward.

Due to continuous impact crushing over a long period of time, the amount of wear on the striking plate exceeds a certain value, causing slippage between the object to be crushed and the striking surface, reducing the crushed particle size and accelerating the wear of the striking plate. If it starts to increase,
The rotor is rotated in the opposite direction, and the material to be crushed, which is introduced into the crusher from the input port, is struck by the opposite side of the striking plate and collided with the other side of the collision plate, which is repeated continuously to gradually impact the material. The particles are crushed and eventually ground to a desired particle size in the gap between the tip of the impact plate and the lower end of the impact plate, and are discharged downward.

Thereafter, each time the impact plate reaches a certain value due to continuous impact crushing over a long period of time, the rotor is rotated in the forward direction.
It rotates in the opposite direction to crush the object by impact.

If one end of the striking plate is worn out and becomes unusable, the striking plate is reversed and replaced, and the other end is used to impact the object to be crushed by rotating the rotor in the forward and reverse directions as before. Crush.

When reversing and replacing the striking plate, replacing the collision plate, or otherwise inspecting or servicing the inside of the crusher, the upper halves of the left and right sides of the casing are rotated outward around the hinge.

[Embodiment] An embodiment of the impact type crusher according to the present invention will be described with reference to FIG. A rotor 4 is constructed by holding striking plates 3' at equiangularly spaced positions by concave-convex fitting. Incidentally, the striking plate 3' is formed thicker at both the upper and lower ends so that it can be used on both sides. The rotor 4 is arranged at the center of the casing 5', and an input port 6' for materials to be crushed is provided at the center of the upper surface of the casing 5'.
The left and right upper halves 5a, 5b of the casing 5' are rotatable outwardly by a hinge 8.
The upper surface is inclined, and two collision plates 7 corresponding to the striking plate 3' are provided inwardly in parallel above and below,
The upper ends of each are pivotally supported by pins 9. The lower back surface of each collision plate 7 is supported by an adjuster rod 10 that can pass through the upper and side surfaces of the casing 5', and the adjuster rod 10 allows the collision between the rotor 4 and the lower end of the collision plate 7 to be crushed by impact. The dimension of the gap t for grinding the crushed product to the required particle size is adjusted, and the lower adjuster rod 10 is pushed with a constant load by a spring 11, so that when foreign matter gets mixed in, it moves backward. It is designed to slide.

Next, the operation of the impact type crusher having such a configuration will be explained. When the rotor 4 is rotated at high speed and a large amount of material to be crushed is continuously fed into the crusher directly above the rotor 4 from the input port 6' provided at the center of the upper surface of the casing 5', the material to be crushed is It is struck by the striking plate 3' due to high-speed rotation, and the collision plate 7 on one side
The collision is repeated continuously and the particles are gradually crushed by impact, and eventually they are ground to the required particle size in the gap t between the tip of the impact plate 3' and the lower end of the impact plate 7, and are discharged downwardly. be done.

However, due to continuous impact crushing over a long period of time, the amount of wear on the striking plate 3' exceeds a certain value, causing slippage between the object to be crushed and the striking surface, reducing the crushed particle size and causing wear on the striking plate 3'. When the acceleration starts to increase, the rotor 4 is rotated in the opposite direction. In this way, the material to be crushed that is input from the input port 6' directly above the rotor 4 in the crusher is hit by the opposite side of the impact plate 3' due to the high-speed reverse rotation of the rotor 4, and is struck by the impact plate 7 on the other side.
The collision is repeated continuously and the particles are gradually crushed by impact, and eventually they are ground to the required particle size in the gap t between the tip of the impact plate 3' and the lower end of the impact plate 7, and are discharged downwardly. be done.

Thereafter, each time the impact plate 3' reaches a certain value due to continuous impact crushing over a long period of time, the rotor 4 is rotated forward and backward to impact crush the object. If one end of the striking plate 3' is worn out and becomes unusable, the striking plate 3' is reversed and replaced, and the other end is rotated in the forward direction of the rotor 4 in the same manner as described above.
Used for impact crushing of objects to be crushed by reverse rotation.

In the above-mentioned impact crushing, the object to be crushed is thrown directly above the rotor 4, so the falling speed is high, and the depth of penetration into the rotating circle of the striking plate 3' is deep, so the impact crushing efficiency of the striking plate 3' is high. expensive. Moreover, since the striking plate 3' has an appropriate dowel shape with a thick plate at the tip, the tip of the striking plate 3' is effectively worn in the thickness direction, and the life of the striking plate 3' is long. Furthermore, since the material to be crushed is fed directly above the rotor 4, even if the material to be crushed contains a lot of moisture or is sticky, the material to be crushed will be fed into the input port 6' at the center of the upper surface of the casing 5'. Will not stick. The striking plate 3'
Since it is held in a loose state with respect to the striking plate holding member 1 by convex-concave fitting, it is in a fixed state by the centrifugal force caused by high-speed rotation. This fixed state is designed so that sufficient centrifugal force is applied to the object to be crushed even if it collides with the striking plate 3', depending on the mass of the striking plate 3', the radius of the rotor 4, and the rotational speed of the rotor 4. has been done.

When reversing and replacing the impact plate 3', the impact plate 7
When replacing the crusher, or inspecting or servicing the inside of the crusher, be sure to check the left and right upper halves 5a of the casing 5',
5b is rotated outward about the hinge 8 as shown in FIG.

When replacing the collision plate 7, by removing the hinge 8, the collision plate portion can be replaced together with the casings 5a and 5b. In this case, the hinge 8 is not deformed, so replacement is easy.

Of the collision plates 7, the lower end of the lower collision plate is located near the horizontal line passing through the center of the rotor, so the gap t between the collision plate 7 and the rotation circle of the striking plate 3' is equal to the axial center line of the rotor 4. The gap t can be easily adjusted, which is advantageous in terms of maintenance.

[Effects of the invention] As can be seen from the above explanation, the impact crusher of the present invention has a rotor in the center of the casing that has thick impact plates in the circumferential direction at both the upper and lower ends, and Since the is equipped with an inlet for the material to be crushed, a large amount of material to be crushed can be fed into the crusher during impact crushing, and since the material to be crushed is placed directly above the rotor, the falling speed can be reduced. high,
Since the penetration depth of the striking plate into the rotating circle is deep, the impact crushing efficiency of the striking plate is high. In addition, the striking plate has an appropriate mallet shape with a thick plate at the tip.
The tip of the striking plate is effectively worn in the thickness direction, and the life of the striking plate is long. Furthermore, since the material to be crushed is fed directly above the rotor as described above, even if the material to be crushed contains a lot of water or is sticky, it will not stick to the input port at the center of the top surface of the casing. Never.

In addition, the upper halves of the left and right sides of the casing are made to be able to rotate outward, and collision plates are provided on the inner surface of the casing in parallel above and below, corresponding to the striking plates in the circumferential direction of the rotor. The striking plate and the collision plate can be easily replaced by rotating the plate, resulting in excellent maintainability. Also, the collision plate is
Since it is provided so as to be swingable, the rotor is rotated forward and reversely every time the striking plate wears out a certain amount, so that the object to be crushed can be continuously crushed by impact without interruption.
Therefore, the frequency of replacing the striking plate is greatly reduced, and the operating rate of the machine is greatly improved, and there are other excellent effects such as an increase in the amount of crushed materials to be crushed.

[Brief explanation of the drawing]

Figure 1 is a vertical cross-sectional view of a conventional impact crusher, Figure 2
The figure is a vertical cross-sectional view of the impact crusher according to the present invention.
The figure is a longitudinal sectional view showing a state in which the upper half of one side of the casing of the impact crusher is rotated outward and opened. 1...Blow plate holding member, 2...Rotor main shaft,
3'...Blow plate, 4...Rotor, 5'...Casing, 6'...Input port for crushed material, 7...Collision plate,
t...Gap.

Claims (1)

[Scope of utility model registration request] A rotor 4 supports a striking plate holding member 1 by a rotor main shaft 2, and holds striking plates 3' having thicker plate thicknesses at both upper and lower ends at equiangularly spaced positions in the circumferential direction of the striking plate holding member 1. is placed in the center inside the casing 5',
An input port 6' for materials to be crushed is provided at the center of the upper surface of the casing 5' so that the materials to be crushed are vertically dropped onto the rotor 4. The left and right upper halves 5a of the rotatable casing 5' are not rotatable.
Collision plates 7 corresponding to the striking plates 3' are disposed vertically and parallel to each other on the striking plates 5b so as to be rotatable and a gap t between the striking plates 3' and the rotation circle of the striking plates 3' to be adjustable. The lower end of the lower collision plate of the collision plate 7 is positioned near a horizontal line passing through the center of the rotor, and the rotor 4 is rotated forward and reverse to crush the object to be crushed. Impact type crusher.