JP2000153169A - Rotor of centrifugal crusher - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance crushing efficiency, promote energy saving, and decrease running time by installing a crushing blade projecting from the outer surface of a rotor and by using a crushing blade for crushing a material discharged from the rotor. SOLUTION: A material to be crushed (e.g. a mineral) charged into a rotor 1 from a charge port 14 is discharged from a discharge port 15 by a centrifugal force generated by the rotation of the rotor 1 and is crushed by causing it to collide with a crushing body (e.g. a dead bed) formed in the surroundings. At this time, the material rebounding without being sufficiently crushed, the material insufficiently accelerated, or the material flying in the changed direction is effectively crushed by beating it with a crushing blade 3 projecting from the outer surface of the rotor 1. The material beaten and crushed with the blade 3 is crushed again by causing it to collide with a dead bed or the like in the surroundings by the striking force of the blade 3. Therefore, even a material insufficiently crushed with the blade 3 can be crushed without fail.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotor for a centrifugal crusher.

[0002]

The centrifugal crusher has a drum-shaped rotor that rotates at a high speed about a vertical axis in the center of a crushing chamber defined by a housing. The crushed raw material introduced into the inside is discharged from the discharge port on the rotor peripheral surface by the centrifugal force generated by the rotation of the rotor, and crushed by colliding with a crushed body such as a dead bed or anvil provided around the crushing chamber. It is a device for performing.

[0003] Further, centrifugal crushers can crush crushed raw materials such as minerals to a fine particle size by their structural functions, and thus are mainly crushed to the final product size such as aggregate. Therefore, as one of the important issues of the current centrifugal crusher, attention has been focused on how to increase the crushing efficiency, save energy and shorten the operation time in order to obtain the required amount of product size aggregate. ing.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to provide a centrifugal crusher capable of improving crushing efficiency, promoting energy saving and shortening operation time. The purpose is to provide data.

[0005]

According to the present invention, as a means for solving the above problems, a crushed raw material supplied inside is
In a rotor of a centrifugal crusher that discharges by rotating at a high speed and crushes by colliding with a surrounding crushed body, crushing blades are provided to protrude from the outer surface of the rotor, and the crushing wings allow the rotor to come out of the rotor. A rotor for a centrifugal crusher, characterized in that crushing is performed by hitting the released crushed raw material.

[0006] The crushing blade is provided near the discharge port of the crushed material provided on the rotor peripheral surface and protrudes from the rotor peripheral surface. -Provide data.

Further, there is provided a rotor for a centrifugal crusher, characterized in that the crushing wing protrudes upstream of the discharge port in the rotor rotation direction. Hereinafter, an embodiment of the present invention will be described with reference to FIGS.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS <A> Shape of rotor main body The rotor main body 1 can take various shapes. For example, as shown in FIG.
And a bottom plate 12 and a side plate 13 connecting the peripheral portions thereof to each other.

In the center of the top plate 11, a crushing material input port 14 is provided.
The side plate 13 is provided with a plurality of discharge ports 15 for crushed raw materials at appropriate intervals in the circumferential direction.

A tip 2 made of a hard material for protecting the outlet of the discharge port 15 from collision of the crushed raw material to be discharged is mounted upstream of the discharge port 15 in the rotation direction of the rotor. ing.

<B> Shape of crushing blade The crushing blade 3 may have various shapes. For example, as shown in FIG. 2, a shape made of an L-shaped hard material composed of a crushing portion 31 and a mounting portion 32 is used. Conceivable.

Further, a reinforcing rib 33 is provided on the inner corner side between the crushing portion 31 and the mounting portion 32, and a bolt hole 34 is opened in the mounting portion 32.

The vertical and horizontal dimensions of the crushing portion 31 and the mounting portion 32 or the shape such as a square or a circle are taken into consideration in terms of crushing efficiency, and they do not hinder the crushed raw material flying from inside the rotor body 1. Design with consideration.

The thicknesses of the crushing portion 31 and the mounting portion 32 are determined in consideration of wear and mounting strength. Further, the crushing unit 3
Although the angle between 1 and the mounting portion 32 is a right angle in the present embodiment, it may be formed at an acute angle or at an obtuse angle in consideration of crushing efficiency, wear, and the like.

<C> Mounting position of crushing blade The mounting position of the crushing blade 3 configured as described above may be any position as long as the top plate 11, the bottom plate 12, and the side plate 13 on the outer surface of the rotor body 1 are provided. Consideration is given to the fact that the crushed material flying from inside the rotor body 1 does not become an obstacle.

In the present embodiment, the rotor body 1 is located near the discharge ports 15 of the side plate 13 which is the peripheral surface of the rotor body 1 and upstream of the rotor body 1 in the rotational direction. Are radially protruded from the center of.

Further, two crushing blades 3 are bolted side by side in the upper and lower directions, and when the amount of wear is partially different, the crushing blades 3 can be mounted in reverse to cope with wear. It is also conceivable to mount three or more vertically.

It is also conceivable that the upper and lower crushing blades 3 are mounted so as to be shifted back and forth in the direction of rotation of the rotor body 1 to consider wear and crushing efficiency.

Further, it is conceivable that an arbitrary number of the crushing blades 3 project not only in the vicinity of the discharge port 15 but also at an appropriate position between the adjacent discharge ports 15 of the side plate 13.

The crushing wing 3 is connected to the top plate 11 of the rotor body 1.
When projecting from the bottom plate 12, it is necessary to consider the contact with other surrounding parts, obstacles due to the direction in which the crushed material rebounds, and the effects on the input and discharge of the crushed material.

[0021]

Next, the operation of the present invention will be described with reference to FIG. The crushed raw material such as minerals introduced into the rotor body 1 from the introduction port 14 is discharged from the discharge port 15 by the centrifugal force generated by the rotation of the rotor body 1, such as the dead bed 4 provided in the periphery. It is crushed by colliding with the crushed body.

However, some of the crushed raw material 5 that rebounds without sufficiently crushing even when colliding with the dead bed 4 or the like,
Some crushed raw materials 6 may not be sufficiently accelerated due to collision between the crushed raw materials in the rotor body 1 or the inner wall of the rotor, or the flying direction may be changed.

According to the present invention, these insufficient crushed raw materials can be effectively crushed by hitting with the crushing blade 3. In addition, the crushed raw material that has been beaten and crushed by the crushing
Colliding with the surrounding dead bed 4 or the like by the impact force of, and the crushing is performed again.

Therefore, even if there is a crushed material that has not been sufficiently crushed by the crushing blade 3, the crushed material can be crushed again by colliding with the dead bed 4 or the like.

Further, the crushed raw material which has not been sufficiently crushed by the collision with the dead bed 4 or the like again should expect the crushing effect of the crushing blade 3 and the collision and crushing effect with the dead bed 4 as described above. Can be. That is, a double, triple or higher crushing effect can be expected until the product size approaches a predetermined size.

The crushing particle size is adjusted by adjusting various conditions such as the rotation speed of the rotor, the amount of crushed raw material, the gap between the rotor and the crushed body, the operation time, and the rotor diameter. Any particle size can be obtained.

[0027]

According to the present invention, a crushed material which could not be sufficiently crushed to a product size once through a centrifugal crusher is discharged from the centrifugal crusher and then re-entered into the centrifugal crusher via a conveyor route such as a belt conveyor. And then re-crushed or re-crushed. Therefore, the crushing efficiency is low, and energy saving and improvement of work efficiency have been demanded.

On the other hand, according to the present invention, by the above-described crushing action of the crushing blade, the amount of insufficiently crushed raw materials circulated through a conveyor route such as a belt conveyor can be significantly reduced. Therefore, it is possible to enhance the crushing efficiency, promote energy saving and shorten the operation time.

In addition, by providing the crushing wings 3,
The effect of preventing the crushed raw material from colliding with the peripheral surface of the rotor and being worn can be expected.

[Brief description of the drawings]

FIG. 1 is an explanatory view of a rotor of a centrifugal crusher of the present invention.

FIG. 2 is an illustration of a crushing wing

FIG. 3 is a diagram illustrating the operation of the present invention.

Claims (3)

[Claims] 1. A rotor of a centrifugal crusher for rotating and discharging a crushed raw material supplied therein at a high speed and colliding the crushed raw material with a surrounding crushed body to protrude from an outer surface of the rotor. A rotor for a centrifugal crusher, wherein a crushing blade is provided, and crushing is performed by hitting a crushing material discharged from the rotor by the crushing blade. 2. The rotor of a centrifugal crusher according to claim 1, wherein the crushing blade is protruded from the peripheral surface of the rotor near a discharge port of the crushed material provided on the peripheral surface of the rotor. A rotor for a centrifugal crusher, wherein 3. The rotor of a centrifugal crusher according to claim 2, wherein the crushing blades are protruded upstream of the discharge port in the rotor rotation direction. -Ta.