JP2571172B2 - Rotating 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 an improved tooth plate for a rotary crusher such as a cone crusher or a gyre crusher having a mantle and a cone cave.

[0002]

2. Description of the Related Art Conventionally, a tooth plate of a rotary crusher has a crushing surface of a tooth plate main body of a mantle and a cone cave, and has irregularities continuous in a wavy shape in a circumferential direction. There is known a crusher which is crushed in a state in which the slip is regulated to improve the crushing efficiency (Japanese Patent Publication No. 3-5).
0580).

In a tooth plate of a rotary crusher of this type, the material to be crushed introduced into the crushing chamber partially enters the concave portion of the mantle crushing surface and the inner peripheral surface of the cone cave and the mantle crushing surface. Are crushed by bending and shearing in a state where the slip in the upward and circumferential directions is regulated. On the other hand, wear of the tooth plate is generated as the rotary crusher is operated for a long time, and the above-mentioned crushing performance is hindered as the gradual progress is made.

[0004]

However, the above-mentioned conventional structure is effective in that the crushed material put into the crushing chamber is crushed in a state where the slip is regulated when the rotary crusher is operated. However, if the arrangement direction of the uneven waves is inappropriate, sufficient crushing performance may not be obtained,
When the wear of the tooth plate progresses, the crushing performance may be impaired, which is not preferable.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the prior art. The power required for crushing is determined by the direction of the direction of the groove forming member disposed on the crushing surface of the tooth plate body and the combination thereof. To provide a tooth plate of a rotary crusher that can optimize crushing performance such as crushed product particle size, crushing efficiency, biting, etc., and can effectively prevent crushing performance from being hindered even when wear of the tooth plate progresses. The purpose is to:

[0006]

According to the present invention, there is provided a tooth plate for a rotary crusher having a mantle and a cone cave, which is made of a material having high wear resistance. It material having a lower wear resistance than the tooth plate body Do Ri from the strip material to the tooth plate body
A plurality of groove forming members are wrapped to disposed in circumferentially spaced casting that, the groove forming members of the mantle forms a directivity beam of the directivity angle of 45 ° to 75 ° arrangement direction with respect to the vertical direction line of the mantle In addition, the groove forming member of the cone cave is characterized by forming a directing line in an array direction orthogonal to the vertical line of the cone cave with a directivity angle, and the groove forming member of the mantle is directed to the vertical line of the mantle. While forming a directivity line in the direction of the arrangement orthogonal to the angle, the groove forming member of the cone cave has a directivity angle of 45 ° to the vertical line of the cone cave.
It is characterized by forming a directional line of 75 ° arrangement direction,
Further, each of the groove forming members of the mantle and the cone cave forms a directional line in an arrangement direction having a directional angle of 65 ° to 90 ° with respect to each vertical direction line, and each of the directional lines is 15 ° at the opposing crushing surface. It is characterized by being formed to intersect at a relative angle of ゜ to 45 °.

[0007]

The reason for limiting the directional angle of the directional line in the present invention will be described below. The first invention is a region in which the directivity angle of the groove forming member of the mantle is set to the arrangement direction of 45 ° to 75 °, and the directivity angle of the cone cave is set to the orthogonal direction (90 °). Cannot be optimized. That is, the crushing load in crushing causes an increase. The particle size distribution of the broken product increases the width of the distribution, lacks sharpness, and causes the generation of fine powder. The crushing efficiency is
The above ratio decreases when expressed as a ratio between the crushed amount of the specified particle size and the work amount. Biting in the crushing chamber reduces the nip angle. According to a second aspect of the present invention, the directivity angle of the groove forming member of the mantle is set to the orthogonal arrangement direction, and the directivity angle of the cone cable is set to 45 °.
The crushing performance cannot be optimized in other regions. The directivity angles of the mantle and the cone cave are limited in the above-described region based on the correspondence relationship with the first invention, and although the crushing ability tends to be lower than that of the first invention, Is improved. According to a third aspect of the present invention, the directional angle of each of the groove forming members of the mantle and the corn cave is set to 65 ° to 90 °, and the directional angle is 1
This is a region having a relative angle of 5 ° to 45 °, and crushing performance cannot be optimized in other regions. And, compared to the first invention or the second invention, it is possible to more easily adapt the crushing capacity and the crushing performance to the required requirements.

In this way, when the crushed object is compressed and crushed in the crushing chamber extending from the upper part to the lower part of the rotary crusher, the crushed object is subjected to bending and shearing forces in addition to the compressive force. The required crushing load can be reduced, and the crushed material in the crushing process of the crushed material in the crushing chamber can be prevented from exhibiting an overfilled state and being crushed to generate transient fine powder, Power required for crushing, particle size of crushed product, crushing efficiency,
In addition to optimizing the crushing performance such as biting, even when the wear of the tooth plate progresses, the crushing surface is continuously formed with a wavy shape, so that it is possible to effectively prevent the crushing performance from being hindered.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an explanatory view of a directivity line of a groove forming member of a mantle in a tooth plate of a rotary crusher showing an embodiment of the present invention, FIG. 2 is an explanatory view of a directivity line of the cone cable, FIG.
Fig. 4 is an explanatory view of the directing lines of the mantle and the cone cave, Fig. 4 is an explanatory view of the directing lines by partially expanding Fig. 3, Fig. 5 is an overall configuration diagram of the tooth plate, and Fig. 6 is the crushing performance and the mantle of the tooth plate. FIG. 7 is a diagram showing the relationship with the directivity angle, FIG. 7 is a cross-sectional view of a main part taken along line AA of FIG. 5, and FIG.

In FIG. 1, a mantle 12 of a rotary crusher is shown.
A plurality of groove forming members 16 made of a band-shaped material are arranged on the crushing surface of the tooth plate main body 14 at a distance in the circumferential direction. Z ₁ −
Z ₁ indicates the vertical line of the mantle 12, and indicates the direction in which the object to be crushed moves from above to below the vertical line Z ₁ -Z ₁ . Reference numeral 17 denotes a directional line, and the groove forming member 16 is a vertical line Z ₁ -Z _{1 of the} mantle 12.
It is formed in the arrangement direction of the directivity angle theta ₁ with respect to, the directional line 17 corresponds to the normal to the groove forming member 16.
The directivity angle θ ₁ of the mantle 12 is formed in the arrangement direction of 45 ° to 75 ° (claim 1), or the directivity angle θ ₁ ′ is formed in the orthogonal arrangement direction of 90 ° (claim). Item 2), and the directional angle θ ₁ ″ is 65 ° to 90 °.
° (the third direction).

In FIG. 2, a plurality of groove forming members 22 made of a band-like material are arranged on the tooth body 20 of the cone cave 18 of the rotary crusher at a circumferential distance. Z ₂ -Z ₂
Indicates the vertical line of the cone cave 18 and indicates the direction in which the object to be crushed moves from above to below the vertical line Z ₂ -Z ₂ . Reference numeral 23 denotes a directional line, and the groove forming member 22 includes a vertical line Z ₂ − of the cone cable 18.
The directional line 23 is formed in the direction of arrangement of the directional angle θ ₂ with respect to Z _2, and the directional line 23 corresponds to the normal direction to the groove forming member 22. The directional angle θ ₂ of the cone cave 18 is formed in a 90 ° orthogonal arrangement direction (claim 1), or the directional angle θ ₂ ′ is formed in an arrangement direction of 45 ° to 75 ° (claim). Item 2), or the directional angle θ ₂ ″ is 65 °
９０90 ° in the arrangement direction.
Section).

In FIG. 3, the rotary crusher 10 includes a tooth plate main body 14 of a mantle 12 and a tooth plate main body 2 of a cone cave 18.
The crushing chamber 24 is formed inside the tooth plate main body 14 and between the tooth plate main body 14 and the tooth plate main body 20. MM indicates the vertical center line of the rotary crusher 10 and substantially coincides with the vertical line Z ₂ -Z _{2 of} the cone cave 18. Mantle 12
Vertical line Z ₁ -Z ₁ of slightly inclined with respect to the vertical center line M-M, O is the vertical center line M-M and the vertical line Z ₁ -Z
Show the intersection with ₁ . Vertical line Z ₁ − of the mantle 12
Z ₁ forms an eccentric circle E around the vertical center line MM with the intersection O as a vertex, and the mantle 12 rotates. Then, the directional line 17 of the mantle 12 and the directional line 23 of the cone cave 18 are 15 ° at each crushing surface as shown in FIG.
It is formed so as to intersect with a relative angle theta _r of to 45 ° (third claims).

In FIG. 4, the vertical line Z ₁ of the mantle is shown.
−Z ₁ and the vertical line Z ₂ −Z _{2 of the} cone cave are made to be common, and the directional line 17 of the mantle 12 and the directional line 23 of the cone cave 18 intersect at a relative angle θ _r at each crushing surface. The relative angle θ _r is defined by the directivity angle θ _{1 of the} mantle and the directivity angle θ of the cone cave.
It is shown with the sum of _two . In this way, a multipoint, multidirectional load is applied to each contact portion on the surface of the crushed object F in the crushing chamber 24, including the internal structure.
The crushing action can be promoted.

In FIG. 5, the rotary crusher 10 has a groove forming member 16 of a mantle 12 in which a directional line 17 is formed in an arrangement direction having a directional angle θ _{1 of} 45 ° to 75 °, and a groove forming member of a cone cable 18. Reference numeral 22 denotes a directional line 23 formed in a direction orthogonal to the directional angle θ ₂ (claim 1).

FIG. 6 shows an example of a crushing experiment using the tooth plate of the rotary crusher according to the present embodiment. The directional angle θ _{2 of} the mantle is set at a directional angle θ _{2 of} 90 °. _The crushing load, crushing efficiency, particle size distribution,
The influence on crushing performance such as nip angle was determined. The experimental results show that the directional angle of the groove forming member of the mantle is 45 ° to 7 °.
It is shown that the crushing performance is optimized in a region where the arrangement direction is 5 ° and the directional angle of the cone cave is an orthogonal arrangement direction (90 °).

Referring to FIG. 7, the mantle 12 of the rotary crusher 10 will be described. The mantle 12 has a tooth plate main body 14 made of a material having high wear resistance, for example, a high manganese cast steel containing 13% by weight or more of manganese.
An outer peripheral surface which is a crushing surface of the tooth plate main body 14 is continuous in a wavy shape in the circumferential direction, and has a plurality of deep grooves 30 and deep grooves 3 formed in wave troughs.
A groove forming member 16 made of a strip-shaped material embedded by casting in the inside of the housing is provided. Teeth as the groove forming member 16
A material having lower wear resistance than the plate body 14 , for example, a general rolled steel material is used.

The tooth crest 26 of the tooth plate main body 14 has a tooth tip 26 formed in a cross-sectional shape consisting of a curve having a required curvature. 26, and thus a crushing surface consisting of a smooth outer surface without waves can be formed.

In FIG. 8, the rotary crusher is operated to cause the wear of the crushing surface as the crushing surface is worn over a long period of operation. The side surface 28 of the member 16 is larger than the tip 26 of the tooth plate body 14.
This causes abrasion and a slight abrasion from the surface indicated by the double-dashed line to the side surface 28a by the solid line, thereby causing the abrasion step E to be generated. The above-mentioned wear step E does not cause a remarkable increase due to the long-time operation of the rotary crusher by the structure described in this embodiment, and the tooth tip 26 and the groove do not reach the wear limit of the tooth tip 26. Since the wear step E having substantially the same size is continuously maintained between the side surface 28a of the forming member 16 and the crushing performance, a decrease in the crushing performance can be avoided, and even if the wear of the tooth plate main body 14 progresses, the same level is obtained. It is possible to operate under crushing performance.

Next, the operating performance of the rotary crusher using the tooth plate according to the present invention is shown in Table 1. As is clear from Table 1, it is shown that the crushing performance such as crushing capacity and crushing power consumption is improved as compared with the conventional technology. In addition, the arrangement direction of the directivity angle θ ₁ of the mantle of the above-mentioned rotary crusher is 70 °,
The arrangement direction of the directional angle θ ₂ of the cone cave was 90 °.

[0020]

[Table 1]

[0021]

As described above, according to the present invention,
By the arrangement direction and the combination of the directional lines of the groove forming member disposed on the crushing surface of the tooth plate main body, when the object to be crushed is compressed and crushed in the crushing chamber extending from the upper part to the lower part of the rotary crusher, the object to be crushed bending in addition to compressive force, are crushed shear force acts, crushing power requirement,砕製product particle size, the crushing efficiency, it is possible to optimize the crushing performance, such as biting, gyratory The long-time operation of the crusher
Even if tooth plate wear occurs, the tooth plate body and the groove forming member
Due to the difference in wear resistance, a groove-like wear step is formed.
This wear step is maintained continuously, making it ideal for crushing action
It is possible to obtain a tooth plate having various shapes, and to effectively prevent the crushing performance from being hindered.

[Brief description of the drawings]

FIG. 1 is an explanatory view of a directing line of a groove forming member of a mantle in a tooth plate of a rotary crusher showing an embodiment of the present invention.

FIG. 2 is an explanatory diagram of directional lines of the corn cave.

FIG. 3 is an explanatory diagram of directional lines of the mantle and the corn cave.

FIG. 4 is an explanatory diagram of a directional line based on a partial development of FIG. 3;

FIG. 5 is an overall configuration diagram of the tooth plate.

FIG. 6 is a diagram showing the relationship between the crushing performance of the tooth plate and the directional angle of the mantle.

FIG. 7 is a cross-sectional view of a main part taken along the line AA of FIG. 5;

FIG. 8 is an explanatory diagram showing a use state of FIG. 7;

[Explanation of symbols]

10 gyratory crusher 12 the mantle 14 and 20 teeth plate body 16, 22 the groove forming member 17 and 23 oriented line 18 Konkebu 24 crushing chamber _{Z 1 -Z 1, Z 2 -Z} 2 vertical lines theta _1, theta ₂ Oriented Angle θ _r Relative angle

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Masahiko Nishi 1780 Kamikono, Yachiyo-shi, Chiba Pref.Kawasaki Shige Kogyo Co., Ltd. Yachiyo Plant (72) Inventor Yoshitaka Sato 1780 Kamikono, Yachiyo City, Chiba Prefecture Kawasaki Heavy Industries, Ltd. Yachiyo Plant (56) References JP-A-64-63052 (JP, A) JP-A-63-143949 (JP) , A)

Claims (3)

(57) [Claims] 1. A dental plate of gyratory crusher having a mantle and Konkebu, mantle and Konkebu wear resistance made of a material having higher <br/> the tooth plate body from strip material-than the tooth plate A plurality of groove forming members made of a material having lower abrasion resistance than the main body are cast- in and are arranged at a distance in the circumferential direction, and the groove forming members of the mantle are directed to the vertical direction of the mantle. A directional line having an angle of 45 ° to 75 ° in an array direction, and the groove forming member of the cone cable forming a directional line in an array direction orthogonal to the vertical direction of the cone cable in an array direction. Plate of crusher. 2. A tooth plate of a rotary crusher having a mantle and a cone cave, wherein the mantle and the cone cave have a tooth plate body made of a material having high wear resistance , a belt-shaped material made of a band-shaped material, and a wear resistance higher than the tooth plate body. A plurality of groove forming members made of a material having a low property are cast- in and arranged circumferentially spaced apart from each other, and the groove forming members of the mantle are arranged at a directivity angle orthogonal to a vertical line of the mantle. And a groove forming member of the cone cave forms a direction line having an angle of 45 ° to 75 with respect to a vertical line of the cone cave. Board. 3. A tooth plate of gyratory crusher having a mantle and Konkebu, mantle and Konkebu wear resistance made of a material having higher <br/> the tooth plate body from strip material-than the tooth plate A plurality of groove forming members made of a material having lower abrasion resistance than the main body are cast- in and are arranged at a circumferential distance from each other, and each of the groove forming members of the mantle and the cone cave is formed by a vertical line. A directional line having a directional angle of 65 ° to 90 ° with respect to each other, and each of the directional lines is formed to intersect at a relative angle of 15 ° to 45 ° on the opposing crushing surface. Characteristic tooth plate of a rotary crusher.