JPS62149352A - Crusher - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] This invention is for crushing hard materials such as various minerals, ceramics, etc., various artificial raw materials such as 1, 7 (+/1 15, etc.) and gravel. This relates to a crusher for

Conventionally, many types of crushers are known.For example, crusher-type crushers such as show crushers, cone crushers, roll crushers, impact crushers, and hammer crushers, rod mills, ball mills, Mill-type pulverizers such as roller mills, impact mills, and disc mills are well known.

Among such conventional crushers, recently, in order to crush the highly abrasive material r1, stones, gravel, etc., a rotating shaft arranged horizontally and a disk fixed to one end of the rotating shaft are used. Many ceramic pins are used, which are equipped with a large number of ceramic pins attached concentrically to the disc, and a ring that surrounds the disc and the ceramic bottle.

In this type of pulverizer, conventionally, as a countermeasure against wear of the disk rotating at high speed, hard overlay welding or a plate-shaped ceramic member was provided as a cover on the surface of the disk. Particularly, the outer periphery of the disk is subject to severe wear, and countermeasures have been emphasized.

For example, in the past, a simple hexahedral ceramic plate was attached to the outer periphery of the disk using adhesive.

As shown in FIG. It was attached as.

r! When a liner with such a structure is provided on the outer periphery of the disk 1, there is a drawback that the contact area between the hexahedron 4 and the disk 1 is small. Furthermore, when the disk 1 rotates, centrifugal force moves on the hexahedron 4, but at that time, the hexahedron 4 is only fixed to the outer periphery of the disk 1 by the pulling force.

As is well known, adhesives have a drawback in that their adhesive strength is not very strong against tensile forces. Therefore, when the disk 1 is rotated at high speed, there is a risk that the hexahedron 4 provided as a liner on the outer periphery of the disk 1 will peel off.

The object of the present invention is to eliminate the above-mentioned drawbacks and provide a pulverizer in which a ceramic liner provided on the outer periphery of a disk is firmly fixed.

In order to achieve such an object, the present invention comprises a rotating shaft disposed horizontally, a disk fixed to one end of the rotating shaft, and a plate attached concentrically to the disk. In a crusher equipped with a large number of ceramic pins, and a casing that surrounds the disk and the ceramic bottle, the disk has a convex or concave cross-section at its outer periphery, and a concave or concave shape corresponding to the cross-sectional shape. The gist of the present invention is a pulverizer characterized in that a ceramic liner having a convex cross section is fixed to the outer periphery of the disc with an adhesive.

The cross section of the outer periphery of the step disc 10 for separating the gap 1 is formed into a convex or concave shape,
A ceramic liner 13 having a concave or convex cross-section corresponding to each cross-sectional shape is fixed to the outer periphery of the disk 10 with an adhesive. Protective members 11 and 12 made of Relamic are provided on both sides of the disc 10 as necessary.

E4 - When the disk 10 rotates at high speed, the ramic liner 13
is subjected to the action of centrifugal force, but at that time, since the cross section of the ceramic liner 13 is convex or concave,
The adhesive that secures the ceramic liner 13 is subject to not only tensile forces but also shear forces. As a result, the ceramic liner 13 is firmly fixed to the disk 10 with a greater adhesive force than in the past.

&JJL 肱浬- According to this invention, the adhesive that fixes the ceramic liner 13 is not limited to tensile force! Since the ceramic liner 13 is subjected to a force of 7 g or 9, the ceramic liner 13 is firmly fixed to the outer circumference of the disk 10 during the break. As is generally known, the shear strength of the adhesive is about 8 to 10 times the tensile strength (r<), and for this reason, in the crusher according to the present invention, the ceramic liner 13 is circular. It is obvious how firmly it is fixed to the outer periphery of the plate 10.

Therefore, the peel-preventing effect of the ceramic liner 13 is significant.

An example of a pin mill will be described as a preferred embodiment of the crushing mill according to the present invention with reference to FIGS. 2 to 5.

The rotating shaft 15 is arranged horizontally. A disk 10 is fixed to one end of this rotating shaft 15. The other end of the rotating shaft 15 is connected to a rotor (not shown), and is rotated in a predetermined direction at a desired rotational speed as necessary.

A large number of ceramic bottles 16 are attached to the disk 10 concentrically. These ceramic pins 16 are annularly arranged in one or more rows at equal intervals. A casing 17 is provided to surround these disks 10 and ceramic pins 16. A large number of pins 18 are fixed alternately in an annular manner to the inner wall surface 17a of the casing 17 facing the disc 10.

Stones, gravel, etc. are crushed between the ceramic pin 16 on the side of the disc 10 and the pin 18 fixed to the inner wall 17a facing the ceramic pin 16.

The structure of the pulverizer described above can be substantially the same as that of the conventional one. Moreover, many modified structures other than those described above can be adopted.

Now, in this invention, the cross section of the outer circumferential portion 10a of the disc 10 is concave. And the outer peripheral part 10a
The cross-section of the ceramic liner 13 is convex in correspondence with the cross-sectional shape of the ceramic liner 13. Thereby, when the ceramic liner 13 is fitted to the outer peripheral portion 10a of the disc 10, it is possible to make close contact with each other.

As shown in FIG.
They are arranged continuously and densely over the entire circumference of 0a.

Each ceramic liner 13 is fixed to the disc 10 with an adhesive. As the adhesive, organic resins such as epoxy resins are suitable.

Furthermore, plate-shaped ceramic protection members 11 and 12 are densely arranged on both sides of the disc 10. Thereby, with the exception of the pin 16, the disk 10 is entirely covered by a ceramic protective element 11, 12 and a ceramic liner 13.

In the embodiment described above, the cross section of the outer peripheral portion 10a of the disk 10 is concave, and the lamic liner 1 is correspondingly shaped.
Although the cross-sectional shape of No. 3 is convex, the present invention is not limited to such a shape. For example, the same effect can be obtained even if the outer peripheral portion 10a of the disk 10 has a convex cross section and the ceramic liner 13 has a correspondingly concave cross section.

[Brief explanation of drawings]

FIG. 1 is a schematic sectional view showing the cross-sectional shape of the outer periphery of a high-speed rotation disk provided in a conventional crusher, FIG. 2 is a schematic sectional view showing the internal structure of the crusher according to the present invention, and FIG. The figure is a schematic perspective view showing the outer periphery of the rotating disk and pins of the crusher shown in FIG. 2, FIG. 4 is a schematic side view showing the rotating disk and pins, and FIG. 5 is the same as that shown in FIG. It is a schematic sectional view along X-xr;t. 10, , Disk 11.12. , Ceramic protective member 13,...
Ceramic liner 15... 0 rotation axis 16. ,,,,Bin 17,,',,,Casing・'j'l":"...' Fig. 1 Fig. 2 Fig. 3 Fig. 4 Fig. 5

Claims (1)

[Scope of Claims] A rotating shaft arranged horizontally, a disk fixed to one end of the rotating shaft, a number of ceramic pins attached concentrically to the disk, and a casing surrounding the disk and ceramic pins. In the pulverizer, the outer periphery of the disk is formed to have a convex or concave cross-section, and a ceramic liner having a concave or convex cross-section corresponding to the cross-sectional shape is attached to the outer periphery of the disk. A pulverizer characterized by being fixed to the pulverizer with adhesive.