JP2725142B2 - Raw material supply path into centrifugal crusher rotor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a centrifugal crusher for crushing raw materials such as minerals, in which a crushed raw material chute provided on a crushing room top plate is placed in a rotor arranged below the crushing room top plate in a rotor. And a supply path for supplying the same.

[0002]

2. Description of the Related Art A centrifugal crusher as shown in FIG. 2 is conventionally known as a device for crushing raw materials such as minerals. Briefly describing this crushing machine, a crushing chamber 11 is defined in a housing 1 which is an outer shell of the crushing machine, and a rotor 2 capable of high-speed rotation in a horizontal direction is arranged in the center of the crushing chamber 11. ing. Raw materials such as minerals are supplied into the rotor 2 and centrifugal force generated by rotation of the rotor 2 causes
The gas is discharged tangentially from a discharge port 21 formed on the peripheral surface of the rotor 2. Then, the released raw material collides with a dead bed 12 made of crushed pieces of raw material accumulated in a ring in the crushing chamber 11 or a steel anvil (not shown). FIG. 3 shows the structure of a supply path for supplying crushed raw materials into the rotor 2 in the centrifugal crusher having the above structure. At the center on the top plate 13 of the crushing chamber, a box-shaped or the like 3 for taking in the crushed raw material from the outside is erected. The supply port 1 is provided at the center of the top plate 13 in the shoe 3 and at the center of the rotor upper disk 22, respectively.
4 and 23 are opened, and feed pipe 4 is passed through them.
Is attached. The feed pipe 4 is provided with a flange 4 at the upper end.
1, the lower end is inserted into the rotor supply port 23. The crushed raw material supplied from the upper part of the shout 3 has a dead bed 3 around the inside of the shout 3.
1 is supplied to the rotor 2 through the feed tube 4.

[0003]

SUMMARY OF THE INVENTION The above prior arts include:
There are the following problems. <A> Since the feed tube 4 is fixed to the top plate 13,
It is necessary to provide a gap in a state where the tip of the feed pipe 4 and the supply port 23 of the rotor 2 are separated. Therefore, the inner diameter of the feed pipe 4, that is, the diameter of the supply path of the crushed raw material is limited. One of the means for improving the crushing efficiency is to increase the supply amount. However, if the diameter of the supply path is limited as described above, the diameter cannot be expanded to increase the supply amount.

<B> Since there is a gap between the rotor supply port 23 and the feed pipe 4, the raw material supplied into the rotor 2 rebounds, so that the raw material is placed on the edge of the rotor supply port 23. Collide. Therefore, the peripheral edge of the rotor supply port 23 is worn, and the life of the rotor 2 is shortened, which is uneconomical.

[0005] The present invention has been made to solve the above problems, and the diameter of the supply path of the crushed raw material is expanded to increase the supply amount of the crushed raw material, thereby improving the crushing efficiency. It is another object of the present invention to provide a raw material supply path into a rotor of a centrifugal crusher, which can prevent wear of a peripheral portion of a rotor supply port due to rebound of the raw material and can prolong the life of the rotor. That is, the present invention provides a supply path for supplying crushed raw material from a crushed raw material chute provided on a crushing chamber top plate of a centrifugal crusher to a rotor arranged below the crushing chamber top plate, in a central portion in the chute of the top plate chute and To provide a raw material supply path into a centrifugal crusher rotor, characterized by comprising a supply port opened in the center of a rotor upper disk and an annular reinforcing material attached to a peripheral portion of the supply port. . Further, a material supply path into a centrifugal crusher rotor in which the inner diameter of the annular reinforcing member attached to the supply port of the top plate is smaller than the inner diameter of the annular reinforcing member attached to the supply port of the upper disk of the rotor. I will provide a. Further, the reinforcing material provides a raw material supply path into the centrifugal crusher rotor detachably attached to the supply ports of the top plate and the rotor upper disk. Further, the reinforcing member is provided in a centrifugal crusher rotor comprising a flange portion which is hooked on the upper surface of the top plate and the upper disk of the rotor, and a fitting portion which is mounted in a supply port of the top plate and the upper disk of the rotor. Provide a raw material supply path.

[0006]

An embodiment of the present invention will be described below with reference to the drawings. <A> Opening of supply ports As shown in FIG. 1, supply ports 14 and 23 are opened in the center of the shattering chamber top 13 inside the shoe 3 and the center of the rotor upper disk 22, respectively. These supply ports 14, 23 are
Open them so that their central axes are on a straight line. Further, the diameters of the supply ports 14 and 23 are formed slightly larger than the outer diameters of the fitting portions 51 and 61 of the reinforcing members 5 and 6 described later, so that the fitting portions 51 and 61 can be mounted. Further, the dimensions of the diameters of the supply ports 14 and 23 are set in advance so as to obtain a required supply path diameter in consideration of the thickness of the fitting portions 51 and 61.

<B> Attaching Reinforcement The upper and lower reinforcements 5 and 6 are attached to the supply ports 14 and 23 opened as described above, respectively. Each of the reinforcing members 5 and 6 is formed in a ring shape from a material having wear resistance, and includes fitting portions 51 and 61 and flange portions 52 and 62. The outer diameter of the fitting portions 51 and 61 is the same as the supply port 1 described above.
4 and 23 are formed slightly smaller than the diameter, so that they can be mounted. The flange portions 52 and 62 are formed to be larger than the diameters of the supply ports 14 and 23, and the top plate 13 and the rotor upper disc 22 are formed.
So that the reinforcing members 5 and 6 can be fixed. The reinforcing members 5 and 6 are fixed by bolts or other means so as to be detachably attached for replacement at the time of wear. On the other hand, the internal spaces of the reinforcing members 5 and 6 are used as supply paths 53 and 63 for the crushed raw material. Since there is no need to provide a gap inside the supply port 23, the diameter of the supply path 63 can be increased as compared with the case where a conventional feed pipe is used, and the supply amount of the crushed raw material can be increased. In addition, the diameter of the supply path 53 of the upper reinforcement 5 is formed slightly smaller than the diameter of the supply path 63 of the lower reinforcement 6. This is the supply path 5 of both
This is because if the diameters of 3 and 63 are equal, the crushed material that has passed through the upper reinforcing member 5 may hit the inner edge of the flange portion 62 of the lower reinforcing member 6 and jump out. As described above, the supply path of the crushed raw material of the present invention is configured.

[0008]

When the crushing operation is performed, the rotor 2 is rotated.
The crushed raw material is put into the SHUT3. The supplied crushed raw material accumulates on the periphery of the shoe 3 and forms a dead bed 3.
After forming 1, it is supplied into the rotor 2 through the upper reinforcement 5 and the lower reinforcement 6. At this time, the supply path 5
Since the diameters of 3 and 63 are larger than the diameter of the conventional feed pipe, the supply amount of the crushed raw material into the rotor 2 is increased. The crushed raw material charged into the rotor 2 rebounds due to the rotational force. However, since the peripheral portion of the supply port 23 is completely protected by the wear-resistant lower reinforcing material 6, wear can be suppressed. it can.

[0009]

Conventionally, since the feed pipe is fixed to the top plate, if the tip of the fixed feed pipe is in contact with the peripheral edge of the supply port of the high-speed rotating rotor, the rotor is not fixed. Rotation becomes impossible. Therefore, a gap is required between the distal end of the feed pipe and the peripheral edge of the supply port of the rotor.
Therefore, as described in the above-mentioned problem of the prior art, the inside diameter of the feed pipe must be reduced by the gap, which is inconvenient when increasing the supply amount of the crushed raw material. In addition, the crushed raw material collides with the peripheral portion of the rotor supply port due to the presence of the gap, and wear occurs, so that the life of the rotor is shortened. Therefore, the applicant of the present application has found that there is no need for a gap between the tip of the feed pipe and the peripheral edge of the supply port of the rotor, the inner diameter of the feed pipe is not limited, and the crushed raw material collides with the peripheral edge of the rotor supply port. Not invented the structure. That is, the structure is such that the lower reinforcing member is directly attached to the peripheral edge of the rotor supply port, based on the idea of separating the conventional feed pipe up and down. The lower reinforcement is separated from the fixed upper reinforcement and rotates integrally with the rotor, so that the rotation of the rotor is not hindered at all. Therefore, it is not necessary to provide a gap between the rotor supply port and the feed pipe as in the related art. Therefore, the inner diameter of the feed pipe can be expanded by an amount that does not require a gap, the supply amount of the crushing material can be increased, and the crushing efficiency can be improved. Further, since the gap is eliminated, the raw material does not collide with the peripheral edge of the rotor supply port due to the rebound of the raw material. Therefore, it is economical because wear of the peripheral edge of the rotor supply port can be prevented and the life of the rotor can be extended.

[0010]

[Brief description of the drawings]

FIG. 1 is an explanatory view of a structure of a raw material supply path of the present invention.

FIG. 2 is an explanatory view of a structure of a conventional raw material supply path.

FIG. 3 is an explanatory view of the entire centrifugal crusher.

Claims (4)

(57) [Claims] 1. A supply path for supplying crushed raw material from a crushed raw material chute provided on a crushing chamber top plate of a centrifugal crusher to a rotor arranged below the crushing chamber top plate, wherein a central portion of the top plate inside the chute and A raw material supply path into a centrifugal crusher rotor, comprising a supply port opened in the center of a rotor upper disk and an annular reinforcing material attached to a peripheral portion of the supply port . 2. The centrifugal crusher according to claim 1, wherein the inner diameter of the annular reinforcing member attached to the supply port of the top plate is smaller than the inner diameter of the annular reinforcing member attached to the supply port of the upper disk of the rotor. Raw material supply path into the rotor . 3. The raw material supply path into the centrifugal crusher rotor according to claim 1, wherein the reinforcing material is detachably attached to supply openings of the top plate and the upper disk of the rotor . 4. The reinforcing member comprises a flange portion which is engaged with the upper surface of the top plate and the upper disk of the rotor, and a fitting portion which is mounted in a supply port of the top plate and the upper disk of the rotor. 3
Raw material supply into the centrifugal crusher rotor described in any of the above
Road.