JPH0436746B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an impact crusher, and more particularly to a reversible impact crusher with an improved structure of a repulsion plate.

In order to obtain aggregates of appropriate particle size for use as aggregates for civil engineering and construction or as raw materials for industrial purposes, raw materials are crushed using a reversible impact crusher as shown in Figure 1. . In the figure, 1 is a rotor, 2 and 2' are a pair of repulsion plates provided with the rotor 1 in between, 3,
3' and 4, 4' are a pair of other repulsion plates similarly provided. Reference numeral 5 denotes a raw material chute, and the raw material fed from the raw material chute 5 is bounced off by a plurality of striking plates 6 protruding from the outer periphery of the rotor 1, collides with each repulsion plate, is crushed, and falls downward. It is now being collected.

However, the repulsion plates 2, 2' installed at the top
(first repulsion plate) is provided close to the raw material chute 5, but the repulsion plates 2, 2' are provided directly under the raw material chute 5, which is the input path for the raw material, to prevent the raw material from falling. It cannot be installed protrudingly. The raw material chute 5 is required to have a predetermined size due to the amount of raw material input. As a result, the crushed area of the repulsion plates 2, 2' could not be made large, and it could not be said that they sufficiently functioned as repulsion plates, and the properties of the resulting product could not be said to be good.

The present invention has been made in view of the above circumstances, and aims to solve the problems of the conventional devices and provide a reversible type impact crusher having the same functions as the side charge type.

That is, the present invention provides a reversible type impact crusher in which a plurality of corresponding repulsion plates are provided around a rotor having a striking plate, in which the impact crusher is provided with a reversible plate that extends from the lower end of the side of the raw material chute of the crusher directly below the raw material chute. A chute liner that swings diagonally downward, a repulsion plate with a large crushing area that moves together with the chute liner directly below the raw material chute, and a rocker that holds the repulsion plate and the chute liner. An impact crusher comprising a movable support member. It is.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Note that the same members as those in the conventional example are given the same reference numerals, and the description thereof will be omitted.

In FIGS. 2 and 3, 22, 22' are a pair of repulsion plates having a larger crushing area than conventional ones, 23, 23' are supporting members that hold each repulsion plate 22, 22' from above, 24, 24' is the support member 2
Shut liners 3 and 23' are provided on the raw material chute side, and 25 and 25' are support members 2.
3, 23' is a hinge that rotatably supports this. The hinges 25, 25' are pivotally supported by the casing 40 at both ends thereof.
Further, 26, 26' are hydraulic cylinders, and 27, 27' are rods operated by the hydraulic cylinders 26, 26'. In FIG. 3, reference numeral 28 denotes support fittings provided on both sides of the hydraulic cylinder 26, and the rod 2
9 is adjustable, and this rod 29, like the rod 27, is connected to the repulsion plate 2 at its end.
It is rotatably locked on the back of 2. Further, the ends of the rods 27 and 29 may be configured to be locked to the support member 23. Note that the corresponding repulsion plate 22' side is similarly configured. 35 is a raw material chute formed shallower than in the conventional apparatus.

When crushing is performed by rotating the rotor 1 in the direction of arrow C, the hydraulic cylinder or air cylinder 26' is operated prior to operation, and the repulsion plate 22' is rotated in the direction of arrow a by means of the hinge 25'. let That is, it is set at the position shown by the solid line in FIG. This allows the shoot liner 24'
is inclined diagonally downward from the lower end of the raw material chute 35, so that the tip of the repulsion plate 22' is extended to approximately the upper center of the rotor 1. On the other hand, the opposing repulsion plate 22 and its shut liner 24 are not tilted and are set in the state shown by the solid line in the figure.

In the above state, the raw material may be introduced from the raw material chute 35 in the same manner as before and the crushing operation may be performed. That is, the raw material introduced from the raw material chute 35 is guided by the inclined shoot liner 24' and falls downward from the direction indicated by the arrow b toward the right of the center. Therefore, at this point, the impact plate 6 of the rotor 1 creates a repulsion plate 22' having a large crushing area.
I was hit by it. The subsequent operation is the same as before.

When crushing is performed by rotating the rotor 1 in the opposite direction (that is, in the opposite direction of arrow C), a repulsion plate 22 and a shoot liner 24 are placed at the position shown by the chain line in FIG.
In addition, the repulsion plate 22' and the shoot liner 24' can be moved and the operation can be carried out in the same manner. In this case, the raw material falls to the left from the raw material chute 35 and hits the repulsion plate 22. As described above, the present invention is configured such that a repulsion plate equipped with a shoot liner is pivotably supported and moved directly below the raw material chute depending on the rotational direction of the rotor, so that the crushing area of the repulsion plate can be widened. Therefore, similarly to the side charge type, the first repulsion plate can fully exhibit its function. Therefore, products with good properties can be efficiently obtained.

Note that the configuration in which a pair of shoot liners and the like are provided facing each other as described in the above embodiments of the present invention is not necessarily limited to this, and it is possible to provide only one of them as necessary. can.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional explanatory diagram of a conventional device, FIG. 2 is a cross-sectional explanatory diagram of a device according to the present invention, and FIG. 3 is an explanatory cross-sectional diagram of a conventional device.
It is an arrow view. 1... Rotor, 22, 22'... Repulsion plate, 23,
23'... Support member, 24, 24'... Shoot liner, 25... Hinge, 35... Raw material shoot.

Claims (1)

[Claims] 1. In a reversible impact crusher in which a plurality of corresponding repulsion plates are provided around a rotor having a striking plate, the impact crusher is provided with a reversible plate that extends from the lower end of the side of the raw material chute of the crusher toward directly below the raw material chute and diagonally downward. A chute liner that swings in an inclined state, a repulsion plate having a large crushing area that moves together with the chute liner directly below the raw material chute, and a swingable support that holds the repulsion plate and the chute liner. An impact crusher characterized by comprising: