JPH05317734A - Tooth plate of crusher - Google Patents

Abstract

PURPOSE:To enhance crushing efficiency of a crusher and improve the particle shape of a product by disposing a plurality of grooves on the surface of a tooth plate of abrasion resisting matallic material and embedding an embedding material of non-matallic material in the grooves. CONSTITUTION:Before the initial operation of a crusher starts, an embedding material 6 is embedded firmly in a groove 5 on the surface of a tooth plate 4 of a mantle 1 through a reinforcing material 7. After the start of the initial operation of the crusher, the material 6 together with the material 7 wears by being contacted with materials to be crushed, before the plate 4 wears, so that a step E which has a certain depth and sharpness is rapidly formed on the end surfaces of the plate 4, material 6, and material 7 by means of corners of the groove 5, and under such conditions, the crusher is operated and crushing is performed under conditions that multiposition loads different from interface compression act on the materials to be crushed, and hence crushing efficiency is enhanced and the particle shape of products can be improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tooth plate of a compression type crusher such as a gyre trellis crusher, a cone crusher, a roll mill, a roll crusher and a jaw crusher.

[0002]

2. Description of the Related Art Conventionally, as a tooth plate of this type of crusher,
In order to increase the crushing efficiency immediately after the start of operation and then maintain the high crushing efficiency until the end of the service life, as shown in FIG. 8, a tooth made of a metal material having high wear resistance is used. An embedding member 8 made of a metal material having low wear resistance is embedded in the groove portion 5 of the plate body 4, and along with the operation of the crusher,
As shown in FIG. 9, the tooth plate body 4 wears prior to the tooth plate body 4, and as shown in FIG. 9, a step 10 having a constant depth is always formed on the tooth plate surface of the tooth plate body 4a and the embedding member 8a to improve the crushing efficiency. It is known that it is designed to be improved (Japanese Patent Publication No. 2-399).
39).

[0003]

However, the above-mentioned tooth plate of the conventional crusher is particularly suitable for crushing a crushed object having a high hardness and a low crushability, or a crushed object in which a large amount of mud, water and the like are mixed. In order to maintain the step at a constant depth, the step is formed due to the difference in wear resistance between the tooth plate body made of a metal material having high wear resistance and the embedded member made of a metal material having low wear resistance. Requires a lot of operating time, and Fig. 1
As shown in 0, the edge of the step 10a becomes curved and lacks sharpness, and the crushed object does not undergo a crushing action under a sufficient multi-position load. However, the grain shape of the product also becomes flat, which is not preferable. The present invention has been made in order to solve the above-mentioned problems of the prior art, and quickly forms a step having sharpness on the tooth plate surface during the operation of the crusher to improve the crushing efficiency of the crusher and the product. An object of the present invention is to provide a tooth plate of a crusher that can improve the grain shape of

[0004]

In order to achieve such an object, according to the present invention, a plurality of grooves are provided on the surface of a tooth plate body made of a wear-resistant metallic material, and the grooves are made of a non-metallic material. It is characterized in that the burying material is buried.

[0005]

By doing so, the embedding material is rapidly worn on the surface of the tooth plate during operation of the crusher due to the difference in wear resistance between the tooth plate body and the embedding material reinforced by the reinforcing material. The formation of the level difference can be rapidly progressed, the crushing efficiency of the crusher can be improved, and the grain shape of the product can be improved so as to approximate a cubic shape.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. 1 is a front view of a mantle of a rotary crusher showing an embodiment of the present invention, FIG. 2 is a partial cross-sectional view taken along line II-II of FIG. 1, and FIG. 3 is a plan view of a reinforcing material for the tooth plate. FIG. 4 is an explanatory view showing a use state of the tooth plate, FIGS. 5, 6 and 7 are partial sectional views showing another embodiment of the present invention, and the same members as those shown in FIG. 8 are the same. It is attached with a code.

In FIGS. 1, 2 and 3, a crushing chamber 3 of a rotary crusher is formed between a mantle 1 which is a tooth plate and a cone cave 2, and under the rotary motion of the mantle 1, The object to be crushed is crushed in the process of passing through the crushing chamber 3. A plurality of groove portions 5 are formed on the surface of the tooth plate body 4 of the mantle 1 so as to be circumferentially separated from each other, and the groove portions 5 are formed from the upper part to the lower part along the generatrix of the mantle 1 which is a truncated cone. It is formed over or inclined with respect to the generatrix. The tooth plate body 4 is made of a wear resistant metal material,
For example, it is made of high manganese cast steel or the like. An embedding material 6 made of a non-metal material having low wear resistance, for example, refractory, concrete, asbestos, plastic or the like is embedded in the groove portion 5, and the embedding material 6 is also embedded.
A reinforcing member 7 is provided in the central portion of the groove portion 5 in order to surely embed it in the groove portion 5. The reinforcing member 7 is made of expanded metal, a perforated steel plate, or the like, and is fixed to the groove portion 5 by cast-wrapping the tooth body 4 or the like.

When using hydraulic refractory mortar together with a hardening material, an auxiliary material, etc., the embedding material 6 is sufficiently prepared so that the required fluidity and porosity can be obtained, and then the embedding material 7 is used. It is formed by pressure injection into the groove portion 5 so as to be hardened to be flush with the surface of the tooth plate main body 4, and is reinforced by mutual engagement by the reinforcing material 7, so that the embedding material 6 can be securely placed in the groove portion 5. It is supposed to stick to.

When a plastic refractory material is used as the embedding material 6 together with a hardening material, an auxiliary material, etc., after being sufficiently prepared so as to obtain the required plasticity, it is placed in the groove 5 through the reinforcing material 7. It is formed so as to be flush with the surface of the tooth plate main body 4 by filling, swaging and molding, and the embedding material 6 is firmly fixed in the groove portion 5 by reinforcement by the reinforcing material 7.

FIG. 4A shows a state in which the embedding material 6 is securely embedded in the groove 5 on the surface of the tooth plate body 4 of the mantle 1 through the reinforcing material 7 as shown in FIG. That is, the state before the initial operation of the crusher is shown.

In FIG. 4 (b), after the initial operation of the crusher, due to contact with the object to be crushed, the embedding material 6 together with the reinforcing material 7 advances the wear of the tooth plate body 4 and the tooth plate body. Four
A step E having a certain depth on the tip surfaces of the embedding material 6 and the reinforcing material 7 and having sharpness due to the corners of the groove portion 5 is rapidly formed, and the crusher under such a state. The crushing action is performed on the crushed object under the action of a multi-position load different from the compression between the planes, so that the crushing efficiency can be improved and the grain shape of the product can be improved.

In FIG. 4 (c), as the operation of the crusher is continued for a long period of time, wear of the tooth plate body 4, the embedding material 6 and the reinforcing material 7 occurs. Even if it is crushed in the groove 5, since the step E is always formed until the end of the useful life of the tooth plate as described above, the crushing efficiency is reduced and the grain shape of the product becomes flat. This can be avoided, and it can be avoided that the tip of the crushed object 9 is pushed into the groove portion 5 and the crushing performance is deteriorated.

FIG. 5 shows a case where a porous carbon steel plate is used as the reinforcing material 7a, and the holes are corners,
A circle or the like can be used. By using this reinforcing member 7a, it is possible to reliably form the above-described step E by utilizing the hole.

FIG. 6 shows a case where the reinforcing material 7 is arranged in parallel in the groove 5 in a plurality of rows, and the reinforcement by mutual engagement with the embedding material 6 in the groove 5 is shown in FIG. It can be performed more reliably than the case shown in FIG.

FIG. 7 shows a case where the reinforcing material 7 is arranged in parallel in the groove 5 in a plurality of rows, and the reinforcement by mutual engagement with the embedding material 6 in the groove 5 is shown in FIG. Compared with the case shown, it can be performed more reliably.

In each of the above embodiments, the case where the tooth plate main body made of the wear resistant metal material is integrally formed with the mantle base, and the reinforcing material is cast into the tooth plate main body is described. However, the reinforcing material formed separately from the tooth plate body may be attached to the tooth plate body.

Further, the type of the burying material 16 and the shape of the groove portion 5,
Depending on the size and usage conditions of the crusher, the use of the reinforcing material 7 can be omitted. Further, the above-mentioned configuration of the tooth plate of the crusher is not limited to the mantle of the rotary crusher, and it is needless to say that it can be applied to the cone cave, the roll mill, the roll crusher, the jaw crusher and other compression type crushers.

[0018]

As described above, according to the tooth plate of the crusher of the present invention, there is a difference in abrasion resistance between the tooth plate body made of the wear-resistant metal material and the embedding material made of the non-metal material which are adjacent to each other. After the start of the initial operation of the crusher, the embedding material is worn prior to the tooth plate body, and a step is quickly formed between the tooth plate body and the tip surface of the embedding material. The step formed by the above wear is formed at a certain depth by suppressing the wear of the embedding material due to the contact with the crushed object due to the groove portion of the tooth plate main body having the required width dimension, and the life period of the tooth plate. Since it has sharpness until the end, the crushing action is performed on the crushed object under a multi-positional load different from the compression between the planes, which improves the crushing efficiency and improves the grain shape of the product. Also has a great effect such as improvement.

[Brief description of drawings]

FIG. 1 is a front view of a mantle of a rotary crusher showing an embodiment of the present invention.

2 is a partial cross-sectional view taken along the line II-II in FIG.

FIG. 3 is a plan view of a reinforcing member of the tooth plate.

FIG. 4 is an explanatory view showing a usage state of the tooth plate.

FIG. 5 is a partial cross-sectional view showing another embodiment of the present invention.

FIG. 6 is a partial sectional view of the same.

FIG. 7 is a partial sectional view of the same.

FIG. 8 is a partial sectional view of a mantle of a conventional rotary crusher.

FIG. 9 is a partial sectional view of the same.

FIG. 10 is an explanatory view showing the same usage state.

[Explanation of symbols]

 4 Tooth plate body 5 Groove 6 Embedded material 7 Reinforcement material

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yozo Kudo 1780 Kamitakano, Yachiyo-shi, Chiba Kawasaki Heavy Industries, Ltd. Yachiyo factory (72) Inventor Masahiko Nishi 1780, Uetakano, Yachiyo-shi Kawasaki Heavy Industries Ltd. Company Yachiyo factory

Claims (2)

[Claims] 1. A tooth plate of a shredder characterized in that a plurality of groove portions are provided on a surface of a tooth plate body made of a wear-resistant metal material, and an embedding material made of a non-metal material is embedded in the groove portions. .. 2. The tooth plate of the crusher according to claim 1, wherein an embedding material is embedded in the groove through a reinforcing material.