JPS5998742A - Tow-stage crusher - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] This invention relates to a rotary crusher.

In the conventional rotary crusher, rocks are input through the input port at the top.
Materials to be crushed, such as ores, are crushed in a tapered crushing chamber between the cone cape and -7 tons, and are discharged from the gap at the bottom.

In the case of such conventional crushers, the crushing gap is one stage, so there is a certain limit on the ratio of the size of the input crushed material to the crushed material discharged, so it is necessary to crush large crushed materials into fine pieces. For coarse crushing, first the coarsely crushed material is crushed using a crusher with a large crushing chamber, and then this coarsely crushed crushed material is fed into the next crusher as the material to be crushed, where it is further crushed into the desired crushed material. Problems arise, such as the need for two crushers for fine crushing, and the need to transfer the crushed material.

This invention aims to solve the above-mentioned problems with conventional crushers, and uses a single rotary crusher to perform both coarse crushing and finely crushing the coarsely crushed materials. This is how it was done.

In other words, is this invention the same as the corn cape? The crushing gap formed between the bolts is made into an upper crushing chamber for large crushing and a lower crushing chamber for small crushing, and the material to be crushed coarsely crushed in the upper crushing chamber is finely crushed in the lower crushing chamber. This is what I did.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Details of the crusher of the present invention will be explained below based on embodiments shown in the accompanying drawings.

In the figure, reference numeral 1 denotes a lower body, and an eccentric cylinder driven by an appropriate drive device is provided at the lower part of the body, and the lower end of the main shaft 2 is fitted into this eccentric cylinder, but these are of known structure. Reference numeral 3 (not shown) denotes an upper body fixed on the lower body 1. An upper bearing 4 is provided at the upper end of the upper body 3, and a Spige ball 5 fitted on the outer periphery of the upper end of the main shaft 2 is fitted into the upper bearing 4. The upper end of the main shaft 2 is swingably supported.

In the case of FIG. 1, the upper body 3 is shaped like a drum with its top and bottom open, and an upper cone cape 6 is fixed to the upper half of its inner periphery so as to have a tapered shape with an open upper part. The lower cone cape 7 is fixed so as to have a tapered shape with an open lower part.

Further, a crushing head 8 whose outer periphery is tapered in two stages is fixed near the upper part of the main shaft 2, and a tapered -7 torque 9 with a small taper angle is fixed to the upper half of the outer periphery of this head 8. , a tapered mantle 10 with a large angle is fixed on the lower half of the outer circumference of the head 8, a large upper crushing chamber 11 is provided between the upper cone cape 6 and the upper mantle 9, and a small one is provided between the lower cone cape 7 and the lower mantle 10. A lower crushing chamber 12 is provided.

In the case of this embodiment, the upper crushing chamber 11 is rotated while the main shaft 2 is given rocking rotation about the fulcrum 0 above the upper crushing chamber 11.
Relatively large, for example about 1.50 m in diameter, m ~ 180 m
When a material to be crushed, such as a rock with a diameter of about 1.5 mm, is input, it is crushed into pieces with a diameter of about 50 mm or less in this crushing chamber 11, and then enters the lower crushing chamber 12, where it is crushed into pieces with a diameter of about 10 mm or less and is discharged into the lower part. It is discharged from the outlet.

In the embodiment shown in FIG. 2, the upper body 3 has a tapered shape with a widened lower part, and the upper end has a tapered shape with a widened upper part to make it easier to charge the material to be crushed.
The inner corn cape 14 is vertically continuous, and the bottom of this corn cape 14 is 1 q of meat. On the other hand, spindle 2
The outer periphery of the crushing head 8 fixed to the head 8 is tapered in two steps, and the mantle 15 fixed to the outer periphery of the head 8 is also made upper and lower and bent to form a large upper crushing chamber 1.
6,! : Small lower crushing chambers 17 are formed above and below.

The embodiment shown in FIG. 3 also has a cone cape 1 inside the upper fuselage 3.
The upper and lower parts are continuous, and the upper half has a tapered shape with a small taper angle with an open top end, and the lower half has a tapered shape with a small taper angle with an open bottom end.

In addition, the outer mantle 19 of the crushing head fixed to the main shaft 2 has a substantially cylindrical upper part and a tapered lower part. are formed one above the other.

In the embodiments shown in FIGS. 2 and 3 above, the fulcrum 0, which is the center of swing of the main shaft 2, is located on the Leahy side of the upper crushing chambers 16 and 20, and as in the embodiment shown in FIG. The material to be crushed is inputted from the input port, is crushed in two stages, and then discharged from the lower discharge port.

As described above, the crusher of the present invention crushes a large diameter object to a certain size in the partial crushing chamber for coarse crushing, and then puts it in the lower crushing chamber to form particles of a desired size. Crush to the diameter.

Therefore, it is no longer necessary to install two crushers, one for coarse crushing and one for fine crushing, unlike in the past, and this has the effect of being economical and improving crushing efficiency.

[Brief explanation of the drawing]

1 to 3 are longitudinal sectional front views of essential parts showing each embodiment of the present invention. 2...Main shaft, 3...Upper body, 6...Upper cone cape, 7...Lower cone cape, 9...''2 parts -
Mantle, 10...Lower mantle, 11, 16.20
...Upper crushing chamber, 12, 17.21...Lower crushing chamber, 14.18... Corner-7',
15, 19... - number. Figure 1 Figure 2

Claims (3)

[Claims] (1) A tapered cone cape provided in the upper body,
A rotary crusher configured to form a crushing chamber between a cone-shaped mantle fixed to the outer periphery of the main shaft, and crush the material introduced into the crushing chamber by rotation of an eccentric cylinder fitted to the lower part of the main shaft. 2, characterized in that the crushing gap formed between the cone cape and the mantle has a two-stage structure, an upper crushing chamber for large crushing and a lower crushing chamber for small crushing.
Stage rotary crusher. (2) The two-stage rotation according to claim 1, characterized in that the cone cape and the mantle constituting the upper and lower crushing chambers are each integrally constructed, and the taper angle is changed between the upper and lower parts. Type crusher. (3) The cone cape and mantle constituting the upper and lower crushing chambers are formed separately for upper and lower parts, and the taper angles of each are changed. Two-stage rotary crusher.