JP3000057U - Structure of raw material supply path into the rotor of centrifugal crusher - Google Patents

Abstract

(57) [Abstract] [Purpose] The present invention is to expand the diameter of the crushing raw material supply path,
To increase the crushing efficiency by increasing the supply amount of crushing raw material,
Another object of the present invention is to provide a structure of a raw material supply path into the rotor of a centrifugal crusher, which can prevent wear of the peripheral portion of the rotor supply port due to rebound of the raw material and prolong the life of the rotor. According to the present invention, in the structure of the supply path for supplying the crushing raw material into the rotor disposed below the crushing chamber top plate from the crushing raw material shoot provided on the crushing chamber top plate of the centrifugal crusher, A centrifuge characterized by comprising a supply port opened in the center of the top plate of the top plate and in the center of the rotor upper disc, and an annular reinforcing member attached to the peripheral parts of these supply ports. This is the structure of the raw material supply path into the crusher rotor. Further, the inside diameter of the annular reinforcing material attached to the supply port of the top plate is smaller than the inside diameter of the annular reinforcing material attached to the supply port of the rotor upper disk into the centrifugal crusher rotor. It is the structure of the raw material supply path. Further, the reinforcing material has a structure of a raw material supply passage into the above-mentioned centrifugal crusher rotor which is detachably attached to the supply port.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention is a centrifugal crusher for crushing raw materials such as minerals.The crushing raw material is supplied from the crushing raw material shoot provided on the top of the crushing chamber to the rotor placed below the top of the crushing chamber. It relates to the structure of the supply path.

[0002]

[Prior art]

 As a device for crushing raw materials such as minerals, a centrifugal crusher as shown in Fig. 2 has been conventionally known. Briefly explaining this crusher, a crushing chamber 11 is defined in a housing 1 which is an outer shell of the crushing machine, and in the center of the crushing chamber 11, a rotor 2 capable of rotating at a high speed in a horizontal direction is formed. It is arranged. A raw material such as a mineral is supplied into the rotor 2 and is tangentially discharged from a discharge port 21 formed on the peripheral surface of the rotor 2 by a centrifugal force generated by the rotation of the rotor 2. Then, the discharged raw material is made to collide with the dead bed 12 formed of the crushed pieces of the raw material accumulated annularly in the crushing chamber 11 or a steel anvil (not shown) to perform the crushing. FIG. 3 shows the structure of the supply path for supplying the crushing raw material into the rotor 2 in the centrifugal crusher having the above structure. In the center of the top plate 13 of the crushing chamber, a box-shaped shoe 3 is installed upright for taking in the crushing raw material from the outside. Then, supply ports 14 and 23 are opened in the central portion of the top plate 13 and in the central portion of the rotor upper disc 22 inside the shunt 3, respectively, and the feed pipe 4 is pierced through them. It is installed. The feed pipe 4 is hooked on the upper surface of the top plate 13 by a flange 41 at the upper end, and the lower end is inserted into the rotor supply port 23. The crushed raw material supplied from the upper part of the shunt 3 forms a dead bed 31 around the inner circumference of the shunt 3, and further passes through the feed pipe 4 to be supplied into the rotor 2. .

[0003]

[Problems to be solved by the device]

 The above conventional technique has the following problems. <A> Since the feed pipe 4 is fixed to the top plate 13, it is necessary to provide a gap between the tip of the feed pipe 4 and the supply port 23 of the rotor 2 in a separated state. . Therefore, the inner diameter of the feed tube 4, that is, the diameter of the feed path for the crushing raw material is limited. One of the means to increase the crushing efficiency is to increase the supply amount. However, if the diameter of the supply passage is limited as described above, the diameter cannot be expanded to increase the supply amount.

<R> Since there is a gap between the rotor supply port 23 and the feed pipe 4, the raw material supplied into the rotor 2 bounces off, so that the raw material is provided at the edge of the rotor supply port 23. Collide. Therefore, the peripheral portion of the rotor supply port 23 is worn, the life of the rotor 2 is shortened, and it is uneconomical.

[0005]

[Means for Solving the Problems]

 The present invention has been made in order to solve the above problems, the diameter of the crushing raw material supply path is expanded, the crushing raw material supply amount is increased, and the crushing efficiency is improved. An object of the present invention is to provide a structure of a raw material supply path into a rotor of a centrifugal crusher which can prevent wear of the peripheral portion of the rotor supply port due to rebound of the raw material and prolong the life of the rotor. That is, in the structure of the supply path for supplying the crushing raw material into the rotor arranged below the crushing chamber top plate from the crushing raw material shoot provided on the crushing chamber top plate of the centrifugal crusher, the top plate is shut down. -Centrifugal crusher rotor characterized by comprising supply ports opened in the center of the rotor and in the center of the rotor upper disk, and annular reinforcements attached to the periphery of these supply ports- This is the structure of the raw material supply path to the inside of the tank. In addition, the inner diameter of the annular reinforcing material attached to the supply port of the top plate is smaller than the inner diameter of the annular reinforcing material attached to the supply port of the upper disk of the rotor. It is the structure of the raw material supply path. Further, the reinforcing material has a structure of the raw material supply path into the centrifugal crusher rotor which is detachably attached to the supply port.

[0006]

【Example】

 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 at the center of the crushing chamber top plate 13 inside the shunt 3 and the center of the rotor upper disc 22, respectively. These supply ports 14 and 23 are opened so that their central axes are aligned. 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 diameters of the supply ports 14 and 23 are set in advance in consideration of the thickness of the fitting portions 51 and 61 so that the required supply path diameter can be obtained.

<B> Attaching Reinforcing Material An upper reinforcing material 5 and a lower reinforcing material 6 are attached to the supply ports 14 and 23 opened as described above, respectively. Each of these reinforcing members 5 and 6 is annularly formed of a material having wear resistance such as special high chrome, and is composed of fitting portions 51 and 61 and flange portions 52 and 62. The outer diameters of the fitting portions 51 and 61 are formed to be slightly smaller than the diameters of the above-mentioned supply ports 14 and 23 so that they can be mounted. The flange portions 52 and 62 are formed to have a diameter larger than the diameter of the supply ports 14 and 23, and are hooked on the top plate 13 and the rotor upper disc 22 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 that they can be detachably attached for replacement when worn. On the other hand, the internal spaces of the reinforcing members 5 and 6 are supply paths 53 and 63 for the crushing raw material. Since the diameter of the supply passage 63 does not need to be provided with a gap inside the supply port 23, the diameter can be expanded as compared with the case of using a conventional feed pipe, and the supply amount of the crushing raw material can be increased. You can Further, the diameter of the supply passage 53 of the upper reinforcing member 5 is formed to be slightly smaller than the diameter of the supply passage 63 of the lower reinforcing member 6. This is because if the supply paths 53 and 63 have the same diameter, the crushed raw material that has passed through the inside of the upper reinforcing member 5 may hit the inner edge of the flange portion 62 of the lower reinforcing member 6 and jump out to the outside. The crushing raw material supply path of the present invention is constructed as described above.

[0008]

[Action]

 When the crushing operation is performed, the rotor 2 is rotated and the crushing raw material is put into the shunt 3. The charged crushing raw material is accumulated in the peripheral portion of the shoe 3 to form a dead bed 31, then passes through the upper reinforcing material 5 and the lower reinforcing material 6 and is supplied into the rotor 2. At this time, since the diameters of the supply passages 53 and 63 are larger than the diameter of the conventional feed pipe, the supply amount of the crushing raw material into the rotor 2 is increased. Further, the crushing raw material thrown into the rotor 2 bounces due to the rotating force, but the peripheral portion of the supply port 23 is completely protected by the wear-resistant lower reinforcing material 6, so wear should be suppressed. You can

[0009]

[Effect of the present invention]

 Since the present invention has been described above, the following effects can be obtained. <A> The present invention has a structure in which a lower reinforcing material is directly attached to the peripheral portion of the rotor supply port based on the idea of separating the conventional feed pipe into upper and lower parts. Therefore, it is no longer necessary to provide a gap between the rotor supply port and the feed pipe as in the conventional case. Therefore, the diameter of the feed path for the crushing raw material can be expanded by an amount that does not require a gap, the supply amount of the crushing raw material can be increased, and the crushing efficiency can be improved.

<R> Since there is no gap between the rotor supply port and the feed pipe, the material does not collide with the edge of the rotor supply port due to the rebound of the material. Therefore, wear of the peripheral portion of the rotor supply port can be prevented and the life of the rotor can be extended, which is economical.

[Brief description of drawings]

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

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

[Figure 3] Illustration of the entire centrifugal crusher

Claims (5)

[Scope of utility model registration request] 1. A structure of a supply path for supplying a crushing raw material into a rotor arranged below the crushing chamber top plate from a crushing raw material shoe provided on the crushing chamber top plate of a centrifugal crusher, wherein the top plate is provided. Centrifugal crusher, characterized in that it comprises a supply port opened in the center of the inside of the shoe and in the center of the rotor upper disk, and an annular reinforcing material attached to the peripheral part of these supply ports. Structure of the raw material supply path into the rotor. 2. The centrifuge 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 rotor upper disc. Structure of the raw material supply path into the crusher rotor. 3. The structure of the raw material supply path into the rotor of the centrifugal crusher according to claim 1, wherein the reinforcing material is detachably attached to the supply ports of the top plate and the rotor upper disk. 4. The reinforcing member is composed of a flange portion that is hooked on the top surfaces of the top plate and the rotor upper disc, and a fitting portion that is mounted in the supply ports of the top plate and the rotor upper disc. Claims 1 to 3
The structure of the raw material supply passage into the centrifugal crusher rotor according to any one of 1. 5. The structure of the raw material supply passage into the centrifugal crusher rotor according to claim 1, wherein the reinforcing material is manufactured by a special high chromium.