JPH06320026A - Gyratory crysher equipped with blades - Google Patents

Abstract

(57) [Summary] [Purpose] It is an object of the present invention to provide a "rotary crusher equipped with blades" capable of effectively preventing deterioration of crushing performance even if the material to be crushed has various properties. [Structure] The blade for press-fitting the material is slanted to the lower rear of the mantle in the rotational direction of the mantle during load operation and the lower part of the blade is installed around the upper part of the outer periphery of the mantle and the upper part of the mantle is located above the mantle. Is formed so as to project upward from the upper end surface of and continuously extend.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary type crusher such as a hydraulic or spring type cone crusher or a secondary gyre trellis crusher, and more particularly to a rotary crusher equipped with blades for press-fitting material downward. Regarding a dynamic crusher.

[0002]

2. Description of the Related Art FIG. 14 is a block diagram of a rotary crusher having a conventional blade. The rotary crusher 10 has a mantle 1
2, a crushing element consisting of a cone cave 14 The mantle 12 is attached via a mantle gear (not shown), and the mantle gear is fastened to the main shaft 18.
A crushing chamber 16 between the mantle 12 and the corn cave 14
Are formed.

Above the outer periphery of the mantle 12, the rotational direction of the mantle 12 during load operation of the rotary crusher 10,
In other words, a plurality of blades 20 obliquely arranged rearward and downward of the rotation direction of the main shaft 18 are provided around the main shaft 18.

The material supplied to the crushing chamber 16 is forcedly pressed downward in the crushing chamber 16 with the rotation of the blades 20 as the rotary crushing machine 10 rotates. In the above, the material is packed and compacted so that the material is crushed to increase the processing capacity and improve the properties of the crushed product.

The rotary crusher 10 described above can perform dry crushing for crushing dry materials, wet crushing for crushing adhesive materials, and wet crushing for crushing adhesive materials. It is necessary to avoid clogging of the material in the crushing chamber 16 during operation.

The structure of a rotary crusher equipped with blades is described in JP-B-4-9094.

[0007]

In the system described in the above-mentioned known technical document (Japanese Patent Publication No. 4-9094), the processing capacity of the rotary crusher is increased and the properties of the crushed product are improved. The upper part of the outer circumference of the mantle is equipped with blades for inclining the material downward in the rotational direction of the mantle during load operation to press the material downward, and the filling / consolidation state of the material in the lower part of the crushing chamber is precise. However, depending on the properties of the material to be crushed, the filling / consolidation state of the material in the lower part of the crushing chamber may be insufficient and the crushing performance may be reduced.

The object of the present invention is to solve the above-mentioned problems of the prior art, and to provide a blade capable of effectively preventing the deterioration of the crushing performance even if the material to be crushed has various properties. The object is to provide a rotary crusher equipped with the crusher.

[0009]

In order to achieve such an object, according to the present invention, a blade for press-fitting a material to the outer periphery of the mantle is inclined obliquely downward and rearward in the rotational direction of the mantle during load operation. In the rotary crusher having a blade, the blade is formed such that a lower portion of the blade is provided around an outer peripheral upper portion of the mantle, and an upper portion of the blade protrudes upward from an upper end surface of the mantle and continuously extends. It is what

[0010]

With this arrangement, the material supplied to the crushing chamber during the operation of the rotary crusher is pressed downward by the blades rotating with the mantle to force the material into the crushing chamber. It will be press-fitted, and since the working length of the inclined blade is significantly increased,
The pressing force acts over the entire height of the mantle to increase the filling / consolidation state of the material in the crushing chamber, and the crushing action is performed under this condition, increasing the processing capacity and the crushed product. The properties of can be improved.
In addition, even if there are various properties of the material to be crushed such as low specific gravity material, wet / adhesive material, the crushing force can act to increase the filling / consolidation state of the material,
It is possible to effectively prevent deterioration of the crushing performance.

[0011]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram of a rotary crusher equipped with blades showing an embodiment of the present invention.

This embodiment is obtained by applying the present invention to the conventional example shown in FIG. 14, and is different from the above-mentioned conventional example in that it protrudes above the upper end surface of the mantle 12. The formed blades 21 are provided around the outer circumference of the mantle 12.

The blade 21 has a required chord length and has a blade upper portion 2
One blade 2 in which 1a and lower blade portion 21b extend continuously
1 is formed. The lower blade part 21b is provided around the upper part of the outer periphery of the mantle 12, and the upper blade part 21a is located above the upper end surface 12a of the mantle 12 or the upper end surface 1a.
It is formed so as to project above the vicinity of 2a. Feather 2
The width of 1 has a ratio of 0.6 to 0.9 with respect to the entrance width of the crushing chamber 16, and the length of the upper blade portion 21a has a ratio of 0.2 to 1.0 with respect to the length of the blade 21. It has a shape with.

The material supplied to the crushing chamber 16 during operation of the rotary crusher 10 is a blade 2 that rotates together with the mantle 12.
1, but the material is initially placed above the upper blade surface 21a of the mantle 12 above the upper end surface 12a.
The crushing chamber 16 is pressed by the belly surface of the
At the entrance of the crushing chamber 1
Therefore, the material is forcibly pressed further downward by the action of the pressing force of the belly surface of the blade lower portion 21b. The pressing force acts over the entire height of the mantle 12, and in particular, the cross-sectional area is narrowed near the lower part of the crushing chamber 16, and the material is filled in the narrowed portion by the action of the pressing force.
As the compaction state becomes more sophisticated, the downward moving speed also increases, and the crushing action is performed by the crushing element under such filling / consolidation state, increasing the processing capacity and the property of the crushed product. Can be improved. This example illustrates dry crushing of material,
In the case of wet-type crushing or wet-type crushing of a material having a low specific gravity or a wet / adhesive material, the processing capacity decreases as shown in FIG.
The treatment capacity decreases as the water content of the material increases, and the treatment capacity decreases maximally in the wet state, and further, the treatment capacity increases with wet crushing at high water content with an increase in the water content of the material or an increase in the amount of added water. It has been shown that the present invention can increase the throughput ratio for material moisture compared to the prior art.

Another embodiment of the present invention is shown in FIG.

The structure of this embodiment different from the embodiment shown in FIG. 1 will be described below.

A hopper portion 38 is provided above the upper end surface 14a of the cone cave 14, and 36 is a hopper casing. The lower portion of the hopper casing 36 has an inverted conical shape, and the inner diameter thereof is the same as the inner diameter of the upper end surface 14 a of the cone cave 14.

The blade 22 has a required chord length and is
2a and the blade lower portion 22b form one continuous blade, and the blade upper portion 22a is projected to the hopper portion 38 above the upper end surface of the mantle 12 or in the vicinity of the upper end surface thereof, and the blade upper portion 22a The outer edge is disposed below the hopper casing 36 with a gap.

According to the present embodiment, the material stored in the hopper portion 38 can be forcedly pressed into the lower portion of the crushing chamber 16, so that the material can be effectively consolidated in the crushing chamber 16. be able to. Further, according to the present embodiment, even when a material having a low specific gravity is crushed, it is possible to enhance the degree of compaction of the material, effectively increasing the processing capacity and improving the property of the crushed product.

Another embodiment of the present invention is shown in FIG. The embodiment shown in FIG. 4 is different from the embodiment shown in FIGS. 1 and 3 in that the blades 23, 23a are formed in multiple stages, for example, two stages at the entire outer peripheral height of the mantle 12, and the blades 23 are 4 sheets for the upper stage. ,
Four blades 23a are provided for the lower stage.

According to this embodiment (FIG. 4), the material filled in the crushing chamber 16 can be pressed against the entire height of the mantle 12 to increase the compaction of the material and effectively improve the crushing performance. it can.

Another embodiment of the present invention is shown in FIG. 5 differs from the embodiment shown in FIG. 4 in that the blades 23,
23b and 23a are formed in three steps on the entire outer peripheral height of the mantle 12. The blades 23 are provided for four pieces for the upper step, the blades 23b are provided for the middle step, four pieces, and the blades 23a are provided for the lower step eight pieces, respectively. The number of blades 23a is increased corresponding to the increase in diameter of the mantle 12 in the height direction.

According to the present embodiment (FIG. 5), the pressing action of the material filled in the crushing chamber 16 over the entire mantle height can be further strengthened.

Another embodiment of the present invention is shown in FIGS. 6 and 7.

The vane 24 has a required chord length and has a mantle 1
Crushing chamber 1 formed between 2 and cone cave 14
The mantle 12 is formed so as to extend along the entire space in the outer peripheral height direction of the mantle 12. The length of the blade 24 has a ratio of 0.5 to 0.9 with respect to the total height of the mantle 12, and as shown in FIG. 7, the gap between the blade 24 and the cone cave 14 is the crushing chamber 1.
6 is wide in the upper part and is narrowed in the lower part of the crushing chamber 16, and the outer edges of the blades 24 are arranged on the inner peripheral surface of the cone cave 14 with a gap.

According to this embodiment (FIGS. 6 and 7), the pressing action of the material filled in the crushing chamber 16 over the entire height of the mantle can be further increased, and the wet / sticky material is crushed. Therefore, the material adhering to the inner peripheral surface of the cone cave 14 can be scraped off and peeled off to make the crushing effect effective.

Another embodiment of the present invention is shown in FIGS. The embodiment shown in FIGS. 8 and 9 differs from the embodiment shown in FIGS. 6 and 7 in that the gap between the blade 25 and the cone cave 14 is kept constant. The virtual excluded volume of the rotary projection surface of the blade 25 shown in FIG. 9 has a ratio of 0.8 to 0.9 to the actual volume of the crushing chamber.

According to this embodiment (FIGS. 8 and 9), the pressing action of the material filled in the crushing chamber 16 over the entire height of the cone cave is increased, and the pressing action is strengthened over almost the entire volume of the crushing chamber 16. Can be made.

Another embodiment of the present invention is shown in FIGS.
Shown in. The embodiment of FIGS. 10 and 11 is shown in FIGS.
The blade 26 is different from the embodiment shown in FIG.
Is formed so as to extend in the entire outer peripheral height direction and to recede with an inclined surface having an inclination angle .theta.

According to the present embodiment (FIGS. 10 and 11), it is possible to facilitate the biting of the material by the abdominal surface of the blade 26 and to start the pressing action of the material filled in the crushing chamber 16 over the entire mantle height. Can be promoted.

Another embodiment of the present invention is shown in FIGS.
Shown in. The embodiment of FIGS. 12 and 13 differs from the embodiment shown in FIGS. 10 and 11 in that the blade 27 extends in the entire outer peripheral height direction of the mantle 12, and the leading edge of the blade 27 extends in the radial direction of the mantle 12. On the other hand, the inclination angle θ, for example, 0-
The trailing edge of the blade 27 moves forward with an inclined surface of 10 °, and the trailing edge of the blade 27 recedes with an inclined surface of an inclination angle θ, for example, 0 to 20 ° with respect to the radial direction of the mantle 12. The inclination angle θ of the inclined surface is continuously changed from the leading edge to the trailing edge so as to be twisted.

According to the present embodiment (FIGS. 12 and 13), the material can be easily bitten by twisting the ventral surface of the blade 26 so that the pressing action can be started and the material can be easily bited over the chord length of the blade 26. It is possible to enhance the pressing action.

[0034]

When the rotary crusher equipped with the blades according to the present invention is operated by using the blades according to the present invention, the material supplied to the crushing chamber is forcibly pressed into the crushing chamber to consolidate the material. The crushing is performed while increasing the state, and even if the properties of the material to be crushed are various, the deterioration of the crushing performance can be minimized, and a great effect is exhibited.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a rotary crusher having blades according to an embodiment of the present invention.

FIG. 2 is a performance diagram comparing the processing capacity of the rotary crusher with that of a conventional technique.

FIG. 3 to FIG. 13 are configuration diagrams of respective examples of the rotary crusher.

FIG. 14 is a configuration diagram of a rotary crusher equipped with a conventional blade.

[Explanation of symbols]

 10 Rotating Crusher 12 Mantle 14 Cone Cave 21, 22, 23, 24, 25, 26, 27 Blade 38 Hopper part

Front page continuation (72) Inventor Yozo Kudo 1780 Kamitakano, Yachiyo-shi, Chiba Kawasaki Heavy Industries, Ltd. Yachiyo factory (72) Inventor Toru Nakanishi 1780 Uetakano, Yachiyo, Chiba Kawasaki Heavy Industries, Ltd. Yachiyo factory

Claims (6)

[Claims] 1. A rotary crusher having a blade for press-fitting a material to the outer periphery of a mantle, inclining backward and downward in the rotational direction of the mantle during load operation, wherein the blade has a lower blade portion. A rotary crusher having a blade, which is provided around the upper part of the outer periphery of the mantle, and the upper part of the blade is formed so as to project above the upper end surface of the mantle and continuously extend. 2. A rotary crusher having blades for slanting downwardly in the rotational direction of the mantle at the time of load operation on the outer circumference of the mantle and for press-fitting the material downward, more than the upper end surface of the cone cave. A hopper portion is provided above the blade, and a lower portion of the blade is provided around an upper portion of the outer periphery of the mantle, and an upper portion of the blade is formed so as to extend continuously above the upper end surface of the mantle to the hopper portion. A rotary crusher equipped with characteristic blades. 3. A rotary crusher having a blade for press-fitting a material to the outer circumference of the mantle, inclining backward and downward in the rotational direction of the mantle during load operation, wherein the blade is the outer circumference of the mantle. A rotary crusher equipped with blades, which is characterized in that it is formed in multiple stages in total height. 4. A rotary crusher having a vane for press-fitting a material to the outer periphery of the mantle by obliquely slanting backward and downward in the rotational direction of the mantle during load operation, wherein the vane comprises a mantle and a cone cave. A rotary crusher equipped with blades, characterized in that it is formed by filling the space of the crushing chamber formed between and with the rotation projection plane of the blades and extending in the entire outer peripheral height direction of the mantle. 5. A rotary crusher having a blade for press-fitting a material to the outer periphery of the mantle, inclining to the rear lower side in the rotational direction of the mantle during load operation, and pressing the material downward, wherein the blade is a mantle and a cone cave. The space of the crushing chamber formed between and was filled with the rotary projection surface of the blade, extended in the entire outer peripheral height direction of the mantle, and provided with a blade formed with a gap to the upper end surface of the cone cave. A rotary crusher. 6. A rotary crusher having a blade for press-fitting a material to the outer periphery of the mantle, inclining backward and downward in the rotational direction of the mantle during load operation, wherein the blade is the outer periphery of the mantle. A rotary crusher equipped with blades extending in the entire height direction and having an inclined surface with respect to the radial direction of the mantle.