JPH0528428U - Centrifugal crusher rotor protection member - Google Patents

Abstract

(57) [Summary] [Object] An object of the present invention is to provide a rotor protection member for a centrifugal crusher, which can prevent wear of an annular plate due to rebound crushed pieces and can economically protect the rotor. And [Constitution] According to the present invention, the crushing raw material supplied from the axial center portion of the rotor which rotates at high speed in the horizontal direction is tangentially blown from the discharge port opened on the rotor peripheral surface by centrifugal force to form in the crushing chamber around the rotor In a rotor protection member that is installed in a centrifugal crusher that collides against a dead bed consisting of crushed pieces, the crushing chamber includes a top plate and an annular bottom plate that are horizontally arranged so as to face each other vertically, and a top plate. And an annular plate that is surrounded by a side plate that connects the peripheral portion of the bottom plate, and hangs between the dead bed of the top plate and the rotor, and a pile of crushed pieces provided on the side plate side below the annular plate. It is a protection member for the rotor of the centrifugal crusher, which is composed of possible shelves.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a rotor protection member for a centrifugal crusher for crushing raw materials such as minerals.

[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. This crusher will be briefly described. A rotor 2 which rotates at a high speed in a horizontal direction is housed in a housing 1 which is an outer shell of the crusher, and the crushing raw material supplied from the axial center of the rotor 2 is subjected to centrifugal force. The blasting is performed in a tangential direction from a discharge port 21 formed on the circumferential surface of the rotor 2, and collides against a dead bed 4 made of crushed pieces formed in the crushing chamber 3 around the rotor 2 to perform crushing. In such a crushing structure, among the crushed pieces crushed by colliding with the dead bed 4, there is a crushed piece that rebounds and collides with the rotor 2. If this is left unattended, the rotor 2 will be worn out and its life will be shortened. Therefore, it is necessary to protect the rotor 2 from the rebound of the crushed pieces. As shown in FIG. 2, the crushing chamber 3 is surrounded by a top plate 31 and an annular bottom plate 32, which are vertically arranged so as to face each other vertically, and a side plate 33 which connects peripheral portions of the top plate 31 and the bottom plate 32. ing. Conventionally, as a method of protecting the rotor 2 described above, an annular rotor protection plate 34 is hung between the inclined surface of the dead bed 4 of the top plate 31 and the rotor 2, and the rotor protection plate 34 rebounds the fragments. Is configured to be shut off so as not to collide with the rotor 2.

[0003]

[Problems to be solved by the device]

 Since the conventional rotor protection plate 34 is a simple flat plate, it is worn out severely due to the collision of the rebounded crushed pieces, and it must be replaced frequently. Therefore, it is uneconomical, and if the replacement time is missed, the rotor 2 may be affected.

[0004]

[Means for Solving the Problems]

 The present invention has been made in order to solve the above problems, and it is possible to prevent the rotor protection plate from being worn by rebounding debris and to protect the rotor economically. The purpose is to provide a protective member. That is, according to the present invention, the crushing raw material supplied from the axial center of the rotor that rotates at a high speed in the horizontal direction is tangentially blown from the discharge port formed on the rotor peripheral surface by centrifugal force to enter the crushing chamber around the rotor. In a rotor protection member installed in a centrifugal crusher that collides against a dead bed composed of formed crushed pieces and crushes, the crushing chamber includes a top plate and an annular bottom plate that are horizontally arranged so as to face each other vertically. An annular plate that is surrounded by a side plate that connects the peripheral portions of the plate and the bottom plate, and hangs between the dead bed of the top plate and the rotor, and a crushed piece provided on the side plate side below the annular plate. It is a protective member for the rotor of the centrifugal crusher, which is composed of the stackable shelves.

[0005]

【Example】

 An embodiment of the present invention will be described below with reference to FIG. The structure of the crushing chamber 3 of the centrifugal crusher is similar to that described in the above-mentioned related art, and the top plate 31 and the annular bottom plate 32 are arranged horizontally in a vertically opposed manner, and the top plate 31 and the bottom plate. It is surrounded by a side plate 33 that connects the peripheral portions of 32. Then, a dead bed 4 is formed on the bottom plate 32 by the accumulation of crushed pieces. The feature of the present invention resides in that the rotor protection member 5 is mounted in the crushing chamber 3 of the top plate 31. As shown in FIG. 1, the rotor protection member 5 includes a rotor protection plate 51 in which a vertical plate is formed in an annular shape, an annular shelf plate 52 horizontally provided at the lower end toward the outside, and a horizontal shelf at the upper end. It is formed in a substantially U-shaped cross section by the annular mounting plate 53 provided in the direction. A dead support portion 54 is erected on the outer peripheral edge of the shelf plate 52 so that the dead bed 6 deposited on the shelf plate 52 does not easily collapse. Although bolt holes 55 are formed in the mounting plate 53 so that the mounting plate 53 can be mounted to the top plate 31 by the bolts 7, other mounting methods can be adopted. The rotor protection member 5 is mounted at a position where the rotor protection plate 51 is suspended between the dead bed 6 and the rotor 2 (for example, directly above the inner peripheral edge of the bottom plate 32).

[0006]

[Operation of the present invention]

 The crushing raw material 8 jumping out of the rotor 2 collides with the dead bed 4 on the bottom plate 32 and is crushed. The crushed fragments are scattered in multiple directions, and some of them are deposited on the shelf plate 52 of the rotor protection member 5 to form the dead bed 6. Therefore, the rotor protection plate 51 is protected by the dead bed 6, and the crushed pieces that collide thereafter collide with the dead bed 6 and do not collide directly with the rotor protection plate 51. Therefore, it is possible to prevent abrasion of the rotor protection plate 51, and it is possible to prevent the crushed pieces from colliding with the rotor 2, which is the original purpose, by blocking.

[0007]

[Effect of the present invention]

 Since the present invention is as described above, the following effects can be obtained. That is, the centrifugal crusher of the present invention is configured such that a shelf is provided on the annular rotor protection plate to form a dead bed. Therefore, the rebounded crushed pieces do not collide with the dead bed and directly collide with the rotor protection plate, so that the wear of the rotor protection plate can be prevented. Therefore, the frequency of replacement of the rotor protection plate is remarkably reduced as compared with the conventional one, so that the rotor can be protected economically.

[Brief description of drawings]

FIG. 1 is an explanatory view of a rotor protection member of the present invention.

FIG. 2 is an explanatory diagram of a conventional technique.

Claims (1)

[Scope of utility model registration request] 1. A crushing device formed in a crushing chamber around a rotor by crushing a crushing raw material supplied from a shaft center portion of a rotor which rotates at a high speed in a horizontal direction in a tangential direction from a discharge opening provided on a rotor peripheral surface by centrifugal force. In a rotor protection member equipped in a centrifugal crusher that collides against a dead bed consisting of pieces and crushes, the crushing chamber includes a top plate and an annular bottom plate that are vertically arranged so as to face each other vertically, and a top plate and a bottom plate. An annular plate that is surrounded by a side plate that connects the peripheral edge portions of the top plate, and hangs between the dead bed of the top plate and the rotor, and crushed pieces that can be deposited on the side plate side below the annular plate. Protective member for the rotor of the centrifugal crusher consisting of a shelf.