JP4397120B2 - Crusher - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention provides a plurality of rotor blades so that their blade surfaces are opposed to each other with a gap in the direction of the rotation axis, and the objects to be crushed are rotated while the rotor blades are rotated integrally. The present invention relates to a crushing device configured to be brought into contact with a rotary blade and crush.
[0002]
[Prior art]
In the conventional crushing device, the entire rotor blade is formed of a hard and high wear-resistant but relatively brittle material such as chrome steel.
[0003]
[Problems to be solved by the invention]
For this reason, there exists a fault which a rotary blade body is easy to break during crushing of a to-be-crushed object, and when the fragment | piece fragment mixes with a crushing object, there exists a possibility of causing trouble when processing a to-be-crushed object in the next processing process.
This invention is made | formed in view of the said situation, Comprising: It aims at enabling it to crush a to-be-crushed object with the rotary blade body which is hard to break while providing abrasion resistance.
[0004]
[Means for Solving the Problems]
According to a first aspect of the present invention, a plurality of rotor blades are provided such that their blade surfaces are opposed to each other at intervals in the direction of the rotation axis, and the rotor blades are rotated integrally. A crushing apparatus configured to crush the object to be crushed by bringing them into contact with the rotor blades, wherein the plurality of rotor blades are formed of a tough material, and among the rotor blades, A wear-resistant layer having wear resistance is provided on the surfaces of the portions that do not face each other in the direction of the rotational axis, and the edges of the wear-resistant layer are arranged on the peripheral portions of the opposed blade surfaces that face each other in the direction of the rotational axis. Extending so as to rise up, a concave portion surrounded by an edge portion of the wear-resistant layer is formed on the opposing blade surface, and a concave portion into which an object to be crushed covering the opposing blade surface enters is formed. It is in.
[Action]
When a plurality of rotor blades are formed of a tough material that is not easily broken, and the blade surfaces of the rotor blades are provided so as to face each other at intervals in the axis of rotation axis, the axis of rotation axis direction In addition, a wear-resistant layer having wear resistance is provided on the surfaces of the parts that are not opposed to each other, that is, on the surface of the parts that are likely to be worn by rotating relative to the object to be crushed while contacting the object to be crushed. Extending the edge of the wear layer so as to rise to the periphery of the opposed blade surfaces facing each other in the direction of the rotation axis, forming a recessed portion surrounded by the edge of the wear-resistant layer on the opposed blade surface, The object to be crushed in contact with the opposite wing surface enters the recessed portion and easily rotates together with the opposite wing surface, and covers the opposite wing surface with the object to be crushed that is difficult to rotate relative to the opposite wing surface. can do.
〔effect〕
A plurality of rotor blades are formed of a tough material, and while the object to be crushed is not easily broken during crushing, the wear resistance of the rotor blades that are easily worn is provided on the surface of the part. It can be prevented by the wear layer, and a recessed portion is formed on the opposed blade surfaces facing each other in the direction of the rotation axis, and the opposed blade surface is covered with the crushed material that has entered the recessed portion, thereby preventing wear of the opposed blade surface. As a result, the object to be crushed can be crushed with a rotating wing body that is hard to break while having wear resistance.
In addition, since it is only necessary to provide a wear-resistant layer on a part of the surface of the rotary blade body, the material for forming the wear-resistant layer can be reduced, and the manufacturing cost of the rotary blade body can be reduced.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 shows a predetermined amount of a granular material F composed of a cement main material in which an aggregate such as sand and a filler are mixed with cement at a predetermined ratio, a fiber material such as pulp, and an additive such as silica. A hydration mixer B that adjusts a molding raw material of cement tile by stirring and mixing with water is shown, and the pulverizer A according to the present invention is provided in the hydration mixer B.
[0006]
The hydration mixer B is provided with a stirring device C that stirs the granular material F and a large number of spraying devices D that spray water on the granular material F in the cylindrical casing 1 that accommodates the granular material F. The granular material F accommodated in the casing 1 and the water sprayed by the spraying device D are stirred and mixed by the stirring device C to adjust the molding raw material of the cement tile.
[0007]
The stirring device C supports a plurality of shovel-shaped stirring blades 3 that are supported on the inner side of the cylindrical casing 1 in a concentric manner with the casing axis X and fixed to the sideways rotating shaft 2. In addition, as shown in FIG. 2, a mixer E that rotates and rotates along the inner peripheral surface of the casing 1 by the drive rotation of the horizontal rotation shaft 2 by the motor M1 and stirs and mixes the powder F and water. The crushing tool 4 fixed so as to rotate integrally with a vertical rotation shaft 6 that can rotate around a rotation axis Y that is orthogonal to the casing axis X does not interfere with the movement of the stirring blade 3 in the casing axis X direction. The crushing is performed by crushing the lump of the powder F mixed in the powder F by the rotation of the crushing tool 4 driven by the motor M2 while being supported between the movement paths of the adjacent stirring blades 3. An apparatus (chopper) A is provided.
[0008]
The crushing tool 4 is shown in FIG. As shown in FIGS. 4 and 5, eight rotary blade bodies (hereinafter, in order from the one located at the base, the first rotary blade body G1, the second rotary blade body G2, the third rotary blade body G3, the fourth rotary blade body, (Referred to as rotary blade body G4, fifth rotary blade body G5, sixth rotary blade body G6, seventh rotary blade body G7, and eighth rotary blade body G8) G have their blade surfaces 5 spaced apart in the direction of the rotation axis Y. The rotating blade bodies G adjacent in the direction of the rotation axis Y are overlapped with each other at an angle difference of 90 ° around the rotation axis Y so as to be opposed to each other. It is configured to be inserted in a non-rotating state and contact the powder body (an example of the object to be crushed) F while crushing the rotor blades G so as to crush the mass of the powder body F. is there.
[0009]
Each of the rotor blades G is formed in the same shape of a substantially rhombus (laterally long octagon) with four corners cut off by a steel plate (an example of a tough material) with toughness such as SS41 (JIS standard), for example. The different-diameter shaft portion 7 is inserted into the center portion, and a wear-resistant layer 8 having wear resistance is provided on a surface of a portion of the rotor blades G not facing each other in the direction of the rotation axis Y. The edge 9 of the wear-resistant layer 8 is provided in a thickness and extends so as to rise to the peripheral portion of the opposed blade surface 10 facing each other in the rotational axis Y direction. A recessed portion 11 surrounded by the portion 9 is formed.
[0010]
The wear-resistant layer 8 is formed by depositing a wear-resistant metal mainly composed of tungsten carbide or chrome carbide on the surface of the rotary blade body (base material) G by an open arc welding method or a submerged arc welding method. This is a welded one, a self-fluxing metal sprayed on the surface of the rotor blade (base material) G by a plasma spraying method or a flame spraying method, and then the sprayed surface is melted (fusing).
[0011]
That is, the first and second rotary wing bodies G1 and G2 and the seventh and eighth rotary wing bodies G7 and G8 assembled side by side at the end in the rotational axis Y direction are the first rotary wing body G1 and the eighth rotary wing. Each of the bodies G8 leaves the periphery of the insertion hole of the different diameter shaft portion 7 across the non-opposing blade surface 12 and the outer peripheral end surface 13 that do not face the third rotating blade body G3 or the sixth rotating blade body G6. In addition, the wear-resistant layer 8 is provided, and the wear-resistant layer 8 is disposed adjacent to the circumferential surface of the opposed blade surface 10 facing the third rotary blade body G3 or the sixth rotary blade body G6. And the recessed portion 11 is formed so as to rise above the opposed blade surface 10, and each of the second rotary blade body G 2 and the seventh rotary blade body G 7 has a fourth shape. Over the non-opposing blade surface 12 that does not face the rotary blade body G4 side or the fifth rotary blade body G5 side and the outer peripheral end surface 13 thereof. While providing an abrasion-resistant layer 8 while leaving an overlapping portion with the adjacent rotary blade body G, the opposite blade surface facing the wear-resistant layer 8 on the fourth rotary blade body G4 side or the fifth rotary blade body G5 side. The recessed portion 11 is formed by extending so as to rise above the opposing blade surface 10, leaving an overlapping portion with the adjacent rotary blade body G in the peripheral portion of 10.
[0012]
Further, each of the third to sixth rotating blade bodies G3, G4, G5, and G6 is an opposing blade surface 10 whose both surfaces are opposed to each other in the rotation axis Y direction, and an outer peripheral end surface 13 thereof is the rotation axis Y direction. Therefore, the wear resistant layer 8 is provided on the outer peripheral end face 13 and the wear resistant layer 8 is provided on the circumferential portion of each opposed blade surface 10 so as to overlap the adjacent rotary blade body G. It is left extending so as to rise above the opposed wing surface 10.
[0013]
[Other Embodiments]
1. In the crushing apparatus according to the present invention, the rotor blades may be formed of a tough material such as stainless steel.
2. The crushing device according to the present invention may be provided such that spacers are sandwiched between adjacent rotor blades so that the blade surfaces of the rotor blades face each other with a gap in the direction of the rotation axis. .
3. The crushing apparatus according to the present invention may crush rocks, ores, plastics, hard wastes, etc., in addition to the granular materials.
[Brief description of the drawings]
[Fig. 1] Partially cutaway side view of the hydration mixer [Fig.2] Cross sectional view of the hydration mixer [Fig.3] Perspective view of the essential part [Fig.4] Partial sectional side view of the essential part [Fig.5] 4 is a cross-sectional view taken along line VV [Explanation of symbols]
F object to be crushed G rotating blade body Y rotating shaft core 5 blade surface 8 wear-resistant layer 9 edge 10 opposed blade surface 11 recessed portion

Claims (1)

A plurality of rotor blades are provided such that their blade surfaces are opposed to each other with an interval in the direction of the rotation axis, and the objects to be crushed are attached to the rotor blades while rotating the rotor blades integrally. A crushing device configured to crush by contact,
The plurality of rotor blades are formed of a tough material, and a wear-resistant layer having wear resistance is provided on the surfaces of the rotor blades that do not face each other in the direction of the rotation axis, and the wear resistance is provided. the edges of the layer, and extends to swell the peripheral part of the opposing blade surfaces facing each other in the rotational axis direction, to the opposing blade surface, in recesses surrounded by the edge of the wear-resistant layer A crushing apparatus in which a recessed portion into which an object to be crushed that covers the opposed blade surface enters is formed.

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