JPH0412190B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a crushing device for crushing hard materials such as stones and gravel.

Prior Art Conventionally, many types of crushing devices are known. For example, crusher-type crushing equipment such as geo crusher, cone crusher, roll crusher, impact crusher, and hammer crusher, as well as rod mills, ball mills, roller mills, impact mills, disc type mills, etc. Mill-type grinding equipment is well known.

Among these conventional crushing devices, recently, for crushing stones, gravel, etc., a rotating shaft placed horizontally, a disk fixed to one end of the rotating shaft, and a concentric circle attached to the disk have been recently developed. Many types of grinding devices are in use that include a number of attached ceramic pins and a casing surrounding the disks and ceramic pins.

In this type of pulverizer, conventionally, as a countermeasure against wear of the disk rotating at high speed, hardfacing welding or a plate-shaped ceramic member was provided as a cover on the surface of the disk.

For example, in the past, a large number of closely spaced simple square or rectangular ceramic plates were attached to the sides of the disk with adhesive.

As shown in FIG. 1, a plurality of ceramic protection means 2 are provided on the side surface of the disk 1. At that time, square ceramic elements 4 were regularly arranged and fixed to the side surface of the disk 1 with adhesive.

Problems to be solved by the invention With such a ceramic element 4,
Because the joints are straight, they tend to wear easily. Another disadvantage is that the ceramic elements 4 cannot be densely arranged over the entire surface of the disk 1.

OBJECTS OF THE INVENTION It is an object of the present invention to eliminate the above-mentioned drawbacks and to provide a crushing device in which the ceramic protection means provided on the side surface of the disk is constituted by a number of specially shaped ceramic elements.

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention comprises a rotating shaft arranged horizontally, a disk fixed to one end of the rotating shaft, and a ceramic protection means fixed to the side surface of the disk. , a crushing device comprising a large number of ceramic pins concentrically attached to the disk, and a casing surrounding the disk and the ceramic pins, the protection means including a large number of cross-shaped, L-shaped or T-shaped ceramic elements tightly The gist of the present invention is a crushing device characterized in that the crushing device is configured such that the crushing device is arranged in an array of shapes, and is fixed to the side surface of the disk with an adhesive.

Means for Solving the Problem The ceramic protection means 11 provided on the side surface of the disk 10 is constituted by a number of cross-shaped, T-shaped, or L-shaped ceramic elements 11b, and these are attached to the side surface of the disk 10 with adhesive. Fix it. A ceramic liner 13 is provided on the outer peripheral surface of the disc 10 as required.

Effect The joints have a jagged shape, resulting in less wear compared to conventional straight joints.

Effects of the Invention According to the present invention, since the joints have a complicated zigzag shape, the protection means suffers less wear and has high durability. Furthermore, it becomes easier to cover the entire side surface of the disc with the protective means, and from this point of view as well, the durability of the disc increases.

Embodiment Referring to FIGS. 2 to 4, an example of a pin mill will be described as a preferred embodiment of the crushing apparatus according to the present invention.

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 motor (not shown), and is configured to rotate in a predetermined direction at a desired rotational speed as necessary.

A large number of ceramic pins 16 are attached to the disk 10 concentrically. These ceramic pins 16 are arranged annularly in one or more rows at equal intervals. A casing 17 is provided to surround these discs 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.

Such a ceramic pin 16 on the disk 10 side
and a pin 1 fixed to the inner wall 17a opposite thereto.
8 to crush stones, gravel, etc.

The outer peripheral portion 10a of the disk 10 has a concave cross section. The ceramic liner 13 has a convex cross-section corresponding to the cross-sectional shape of the outer peripheral portion 10a. 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. The relationship between these uneven shapes may be reversed. This focuses on the effective use of the shear strength of the adhesive.

As shown in FIG. 3, ceramic liners 13 having such a convex cross section are continuously and densely arranged over the entire circumference of the outer circumference 10a of the disk 10. Each ceramic liner 13 is fixed to the disc 10 with adhesive. As the adhesive, organic resins such as epoxy resins are suitable.

Additionally, ceramic protection means 11 are provided on both sides of the disc 10. In the illustrated example, the protection means 11 is made of a ceramic plate 11 having a donut shape near the outer periphery.
The inside of the ceramic element 11b is made up of a specially shaped ceramic element 11b. Thereby, with the exception of the pin 16, the disk 10 is entirely covered by the ceramic protection means 11 and the ceramic liner 13.

The ceramic element 11b is cross-shaped or L-shaped.
It is letter-shaped or T-shaped. These ceramic elements 11b are skillfully combined to form a disc 1.
Place it closely on the side of the 0 and fix it with adhesive. As with the liner 13, organic resin such as epoxy resin is optimal for the adhesive.

[Brief explanation of drawings]

FIG. 1 is a schematic side view showing the side surface of a high-speed rotation disk provided in a conventional grinding device, FIG. 2 is a schematic sectional view showing the internal structure of the grinding device according to the present invention, and FIG. FIG. 4 is a schematic perspective view showing the outer periphery and side parts of the rotating disk of the crushing device shown in the figure, and FIG. 4 is a schematic side view showing the rotating disk. DESCRIPTION OF SYMBOLS 10... Disk, 11... Ceramic protection means, 11b... Ceramic element, 13...
Ceramic liner, 15... Rotating shaft, 16...
...pin, 17...casing.

Claims (1)

[Claims] 1. A rotating shaft arranged horizontally, a disk fixed to one end of the rotating shaft, a ceramic protection means fixed to the side surface of the disk, and a number of ceramic pins attached concentrically to the disk, In the crushing device comprising a casing surrounding the disk and the ceramic pin, the protection means is cross-shaped or L-shaped.
A crushing device characterized in that it is constructed by closely arranging a large number of letter-shaped or T-shaped ceramic elements, and is fixed to the side surface of the disk with an adhesive.