JP2571174B2 - Crusher tooth plate - Google Patents

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 crusher, a cone crusher, a roll mill, a roll crusher, a jaw crusher or the like.

[0002]

2. Description of the Related Art Conventionally, as a tooth plate of this type of crusher,
After the operation is started, the crushing efficiency is increased immediately, and thereafter, the high crushing efficiency is maintained until the end of the service life. 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 with the operation of the crusher,
As shown in FIG. 9, wear occurs prior to the tooth plate main 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 main body 4 a and the burying member 8 a to improve the crushing efficiency. It is known to improve it (Japanese Patent Publication No. 2-399)
No. 39).

[0003]

However, the tooth plate of the above-mentioned conventional crushing machine is particularly suitable for crushing a crushed material having a high hardness and a low crushing property, or a crushed material containing a large amount of mud, moisture and the like. First, to maintain the step at a constant depth, a 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
As shown in FIG. 0, the edge of the step 10a has a curved surface and lacks sharpness, and the crushed object does not perform a crushing operation under a sufficient multi-position load, so that the crushing efficiency is reduced. However, the grain shape of the product is also undesirably flat. The present invention has been made in order to solve the above-mentioned problems of the prior art, and a step having sharpness on a tooth plate surface is quickly formed during operation of a crushing machine, thereby improving the crushing efficiency of the crushing machine and improving the product quality. An object of the present invention is to provide a tooth plate of a crusher capable of improving the grain shape of the crusher.

[0004]

In order to achieve the above 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 metal material, and the grooves are made of a refractory material. A plurality of grooves are disposed on the surface of the tooth plate body made of a wear-resistant metal material, and the grooves are made of a non-metallic material via a reinforcing material. Is characterized by being buried.

[0005]

In this way, when the crushing machine is operated, the surface of the tooth plate is rapidly worn due to the difference in wear resistance between the tooth plate body and the embedded material reinforced by the reinforcing material. The formation of the step can be rapidly progressed, so that 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 one embodiment of the present invention, FIG. 2 is a partial sectional view taken along line II-II of FIG. 1, FIG. 3 is a plan view of a reinforcing material of the tooth plate, FIG. 4 is an explanatory view showing a use state of the tooth plate, and FIGS. 5, 6, and 7 are partial cross-sectional views showing another embodiment of the present invention, and the same members as those shown in FIG. The code is attached.

In FIGS. 1, 2 and 3, a crushing chamber 3 of a rotary crusher is formed between a mantle 1 and a cone cave 2 which are tooth plates. The crushed material is crushed in the process of passing through the crushing chamber 3. A plurality of grooves 5 are formed on the surface of the tooth plate main body 4 of the mantle 1 so as to be spaced apart from each other in the circumferential direction. The grooves 5 are formed from the upper part to the lower part along the generatrix of the mantle 1 made of a truncated cone. 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. An embedding material 6 having less wear resistance than the tooth body 4 is embedded in the groove 5, and a reinforcement is provided at the center of the groove 5 in order to ensure that the embedding material 6 is embedded in the groove 5. Material 7 is provided. The burying material 6 is made of a refractory material, for example, a hydraulic refractory mortar, a plastic refractory, or the like. Further, the burying material 6 can be made of a nonmetallic material, for example, concrete, asbestos or the like. 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 casting the tooth body 4 into place.

When the hydraulic refractory mortar is used together with a hardening material, an auxiliary material, and the like, the burying material 6 is sufficiently prepared so as to obtain required fluidity and porosity, and then the reinforcing material 7 is interposed therebetween. Pressure is injected into the groove 5 so that it is hardened and formed to be flush with the surface of the tooth plate body 4, and is reinforced by mutual engagement with the reinforcing material 7, so that the embedding material 6 is securely inserted into the groove 5. It is designed to stick to.

When a plastic refractory is used together with a hardening material, an auxiliary material or the like as the burying material 6, the refractory material is sufficiently prepared so as to obtain a required plasticity, and then is inserted into the groove 5 via the reinforcing material 7. It is formed so as to be flush with the surface of the tooth plate main body 4 by filling, grinding, shaping, or the like, and the embedded material 6 is securely fixed in the groove 5 by reinforcement by the reinforcing material 7.

FIG. 4 (a) shows a state in which the embedding material 6 is securely embedded in the groove 5 on the surface of the tooth plate main body 4 of the mantle 1 via 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, the buried material 6 and the reinforcing material 7 wear ahead of the tooth plate body 4 due to the contact with the crushed material, and the tooth plate body 4
A step E having a certain depth on the tip surfaces of the buried material 6 and the reinforcing material 7 and having sharpness due to the corners of the groove 5 is rapidly formed. The crushing operation is performed on the object to be crushed under the action of a multi-position load different from the plane-to-plane compression, 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 continues for a long period of time, wear of the tooth plate body 4, the buried material 6 and the reinforcing material 7 occurs. Even if crushed in the groove 5, the step E is always formed until the end of the useful life of the tooth plate as described above, so that the crushing efficiency is reduced or the grain shape of the product becomes flat. In addition to this, it is possible to prevent the tip of the object 9 to be crushed from projecting into the groove 5 and to reduce the crushing performance.

FIG. 5 shows a case where a porous carbon steel sheet is used as the reinforcing member 7a.
A circle or the like can be used. By using the reinforcing member 7a, it is possible to reliably form the step E as described above using the hole.

FIG. 6 shows a case in which reinforcing members 7 are provided in the groove 5 in a double row, and reinforcement by mutual engagement with the burying material 6 in the groove 5 is shown in FIG. Can be performed more reliably than the case shown in FIG.

FIG. 7 shows a case in which reinforcing members 7 are arranged in multiple rows in the groove 5, and reinforcement by mutual engagement with the burying material 6 in the groove 5 is shown in FIG. This can be performed more reliably than in the case shown.

In each of the above embodiments, the case where the tooth plate main body made of a wear-resistant metal material is integrally formed with the mantle base and the tooth plate main body is formed of the reinforcing member by casting is described. However, the present invention is not limited to this, and a reinforcing member separately formed may be attached to the tooth plate body.

The type of the buried material 16, the shape of the groove 5,
The use of the reinforcing member 7 can be omitted depending on the size, the use condition of the crusher, and the like. Further, the configuration of the tooth plate of the crushing machine described above is not limited to the mantle of the rotary crushing machine, but can be applied to a cone-type cave, a roll mill, a roll crusher, a jaw crusher and other compression-type crushers.

[0018]

As described above, according to the tooth plate of the crusher of the present invention, the friction between the adjacent tooth plate body made of a wear-resistant metal material and the embedded material made of a refractory material or a non-metal material. After the initial operation of the crusher, the embedded material is worn ahead of the tooth plate body, and a step is rapidly formed on the tip surface of the tooth plate body and the embedded material.
The wear of the buried material due to the contact with the material to be crushed is suppressed by the groove of the tooth plate main body having a required width dimension, the sharpness is formed until the life of the tooth plate is completed after the embedded material is formed at a certain depth. As a result, the material to be crushed is subjected to crushing action under a multi-position load different from plane-to-plane compression, which improves crushing efficiency, improves the grain shape of the product, and improves the reinforcing material. There is a great effect that reinforcement by mutual engagement with the buried material in the groove can be reliably performed through the groove.

[Brief description of the drawings]

FIG. 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.

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

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

FIG. 5 is a partial 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 cross-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 diagram showing the same use state.

[Explanation of symbols]

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

 ────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masahiko Nishi 1780 Kamikono, Yachiyo-shi, Chiba Pref. Kawasaki Heavy Industries, Ltd. Yachiyo Plant (56) References JP-A-55-30425 (JP, A) -16244 (JP, B1)

Claims (2)

(57) [Claims] 1. A tooth plate for a crusher, wherein a plurality of grooves are provided on a surface of a tooth plate main body made of a wear-resistant metal material, and an embedding material made of a refractory material is embedded in the grooves. . 2. A table of a tooth plate main body made of a wear-resistant metal material.
A plurality of grooves are disposed on the surface, and a burying material made of a nonmetallic material is buried in the grooves via a reinforcing material.
Crusher tooth plate.