JPH0459019B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] This invention relates to a shell liner in which materials to be crushed, such as various kinds of waste, inputted from the upper opening of a cylindrical shell are fixed inside the shell, and a shell liner fixed to the outside of the rotating shaft. The present invention relates to a method for replacing a shell liner in a crusher that uses a breaker liner installed in a crusher and a grinder to crush the shell liner.

[Conventional technology]

Conventionally, in the above-mentioned crusher, the shell liner has a thick-walled liner and a thin-walled liner alternately fixed to the inside of the shell to form unevenness, and the breaker liner attached to the rotating shaft and the crusher liner between the grinder and the shell liner are attached to the rotating shaft. The material to be crushed thrown into the chamber is blown away by a breaker liner that rotates together with the rotating shaft and collides with the shell liner, and is directly crushed and crushed in the gap between the grinder and the breaker liner and the shell liner.

For this reason, the shell liner wears out and needs to be replaced in a timely manner. Conventionally, two types of shell liners are prepared, one with a thick wall and one with a thin wall, and one of them is used when replacing the liner.

[Problem to be solved by the invention]

As mentioned above, the liners of conventional crushers are made up of thick liners and thin liners arranged alternately, so if the thick liner wears out, it can be replaced with a new thick liner. Must be replaced. In addition, if the thick liner is made of a material with greater wear resistance than the thinner liner, when the thicker liner wears out, it is natural that the thicker liner will also wear out, and eventually the liner will wear out. Everything needs to be replaced. Therefore, it is necessary to always have two types of shell liners available at the crushing site: thick-walled liners and thin-walled liners.
Replacement is time consuming and uneconomical.

An object of the present invention is to provide a shell liner replacement method that can solve the problems of conventional crushers as described above.

[Means to solve the problem]

In order to solve the above problems, the present invention uses two types of shell liners fixed inside the shell: a concave and convex shell liner that has convex portions and concave portions, and a low shell liner that is lower than the convex portion of the concave and convex shell liner and has no concave and convex portions, The mounting structure of these two types of shell liners to the shell is the same, so that the uneven shell liner can be attached after removing the smooth low shell liner.First, the uneven shell liner and the low shell liner are properly arranged and fixed, and then To provide a method for replacing a shell liner, characterized in that only an uneven shell liner is replaced with a worn shell liner.

〔Example〕

In the embodiment shown in the drawings, 1 is a cylindrical lower shell, 2 is an upper shell fixed to the upper part,
This shell 2 has a shallow tapered shape with a wider upper part, and the upper end is open as an input port. Also,
A large number of shell liners are fixed inside these shells 1 and 2, and as is clear from FIG. The low shell liners 3' of the same height are alternately arranged, and
The attachment structure of both shell liners 3, 3' to the shell 1 is the same, so that the uneven shell liner 3 can be attached after removing the low shell liner 3'.

Further, the upper shell liner 4 has thick and thin walls arranged in an appropriate order to create unevenness.

Reference numeral 5 denotes a vertical rotation shaft provided at the center, which is rotated by a drive device provided at the bottom, although not shown.

A rotor is fixed to the upper end of the rotating shaft 5, and a plurality of pairs of upper and lower breaker joints 7 are rotatably attached to the upper and lower sides of the rotor 6 by a shaft 8, and a breaker liner 9 is installed between the outer ends of each joint 7. Attach it so that it can rotate freely.

A pair of upper and lower disc-shaped rotors 10 and 11 are fixed to the upper and lower ends of the rotating shaft 5, a rotor ring 12 is fixed to the outer periphery of the rotor 10, and a rotor liner 13 is fixed to the outer periphery of the rotor 11.

Reference numeral 14 denotes a plurality of shafts fixed between the upper and lower rotors 10 and 11, and to this shaft 14, one telescopic link 15 having a screw jack mechanism and the other link 16 are rotatably attached. be.

The tips of links 15 and 16 attached to adjacent shafts 14 are rotatably connected by a shaft 17, and the upper and lower annular portions of a joint 18 are rotatably fitted above and below this shaft 17, and a grinder is attached to this joint 18. 19 is fixed with a plurality of pins.

In the above configuration, the material to be crushed that is introduced into the shell 2 from the input port at the upper end is blown away by the breaker liner 9 that rotates together with the rotating shaft 5, collides with the liner 4 inside the shell 2, is crushed, and is sent downward. The particles are moved and further finely pulverized by the grinder 19 and the liners 3 and 3', and the size of the pulverized particles can be changed by adjusting the gap between the grinder 19 and the liners 3 and 3'.

In the crusher of the embodiment that operates as described above, the shell liners 3, 3', and 4 gradually wear out due to collisions with objects to be crushed, but the convex portion b of the uneven shell liner 3 wears particularly severely. The convex portion b of the uneven shell liner 3 gradually becomes lower, and finally reaches almost the same height as the new low shell liner 3'.

Also, since the low shell liner 3' is retracted,
There is little wear, but it is still gradually wearing out and the flesh is becoming thinner. Therefore, the convex portion b of the uneven shell liner 3
When the wear has progressed to a certain extent, the low shell liner 3' is removed and a new uneven shell liner 3 is installed in its place.

In this state, the uneven shell liner 3 with worn protrusions b becomes a low shell liner, and if the operation is continued for a predetermined period of time in this state, the first generation uneven shell liner 3 that was first installed becomes thinner and thinner, and the protrusions b of the second generation uneven shell liner 3 become thinner. Since it wears out, this second generation uneven shell liner 3 is left as a low shell liner, the first generation uneven shell liner 3 is removed, and a new uneven shell liner 3 is installed in its place.

In this way, new uneven shell liners are installed one after another, thereby constantly forming unevenness due to the liner inside the shell.

In the case of the embodiment, the upper shell liner 4 has liners 4 of different thicknesses arranged and fixed in an alternating manner as in the past, but the upper shell liner 4 can also be replaced in the same way as the lower liner. In some cases.

〔Effect of the invention〕

As described above, in the method of this invention, it is necessary to alternately arrange the uneven shell liner and the low shell liner at the initial stage, but after that, the uneven shell liner with worn protrusions is used as the low shell liner, and the initially installed low shell liner is used as the low shell liner. Instead, you can install a concave and convex shell liner, and then replace only the concave and convex shell liners alternately. Therefore, there is no need to prepare two types of shell liners, one with a thick wall and the other with a thin wall, unlike the shell liners of conventional crushers, and replacement is easy and economical.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional front view showing an embodiment of a crusher for carrying out the method of the present invention, and FIG. 2 is a partially sectional plan view of the same. 1...lower shell, 2...upper shell, 3...
Uneven shell liner, 3'...Low shell liner, 4
... Ciel liner, 5 ... Rotating shaft, 9 ... Breaker liner, 19 ... Grinder.

Claims (1)

[Claims] 1. In a crusher that has a breaker liner, grinder, etc. installed on the rotating shaft installed at the center of a non-rotating vertical cylindrical shell with a shell liner fixed inside, the shell liner fixed inside the shell is
There are two types: a concave and convex shell liner that has a convex part and a concave part, and a low shell liner that is lower than the convex part of this concave and convex shell liner and has no concavities and convexities.The mounting structure of these two types of shell liners to the shell is the same, and the low shell liner that has no convexities and convexities is used. First, properly position and fix the uneven shell liner and low shell liner so that the uneven shell liner can be attached after removal.
A shell liner replacement method in a crusher, characterized in that only the uneven shell liner is then replaced with the worn shell liner.