JP2748997B2 - Liners for cone crushers - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a corn cable liner and a mantle liner of a corn crusher for producing coarse aggregate and fine aggregate used for concrete and asphalt mixture.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 4, a liner for a cone crusher of this type has a crushing chamber (cone cable liner inclination angle α ₁ = 0 ° to 40 °) which is considered to perform the most preferable crushing action. , Mantle liner inclination angle α ₂ =
0 ° -40 °, crush zone length B and D = 400m
m or less) to form a pair of upper and lower liners,
The design was based on the combination of the shapes of the cone cable liner 9 and the mantle liner 8. Therefore, the maximum size of the raw material that can be put into the cone crusher is determined by the cone cable liner inclination angle α ₁ , the mantle liner inclination angle α ₂ , and the lengths B and D of the crushing zone.

[0003]

For this reason, when the raw material size becomes larger than the reference value, the raw material merely rolls without being caught at the entrance of the crushing zone, and stays at the entrance, and the entrance is closed. There was an obstacle that the amount of raw materials going down sharply decreased and the crushing capacity suddenly declined.

[0004] In a crushing plant, it is usually a possible phenomenon that the crushed product size of the crusher in the previous process changes and large lumps temporarily flow downstream, and a model number corresponding to the crusher in the next process is selected. Must be kept. When selecting a model number, it is usually determined by conditions such as crushing capacity, raw material size and product size. Therefore, although the crushing capacity and product size can be satisfied, the raw material size cannot be satisfied.
It was very uneconomical to select something larger by two steps. Therefore, in order to eliminate the above-mentioned inconveniences, there has been a demand for a measure capable of increasing the size of the raw material input to the crusher.

[0005]

In order to solve the above-mentioned problems, in a liner for a cone crusher according to the present invention, a mantle inclination angle is 20 ° to 65 °, a cone cable liner inclination angle and a mantle liner inclination angle are 5 °. ~ 40
°, the length of the crushing zone is about 400 mm, and in a cone cable liner and a mantle liner that form a crushing chamber of a cone crusher that performs interparticle crushing, the angle of the cone cable liner at the entrance of the crushing zone is 5 ° to 5 °. The length of the remaining crushing zone having an inclination angle larger by 70 ° is 0.1 to 0.9 of the length of the original crushing zone.
A notch in which the length of the remaining crushing zone is substantially horizontal at the entrance of the crushing zone of the mantle liner and the length of the remaining crushing zone is 0.1 to 0.9 of the original length of the crushing zone. And a substantially horizontal annular projecting portion extending inward at the upper end of the cone cable liner.

[0006]

Since the liner for a cone crusher according to the present invention is constructed as described above, the size of the clogging material at the inlet of the crushing zone can be increased by 4 to 4.5 times as compared with the conventional one. Therefore, the bulk material is smoothly caught and crushed into the crushing zone without stagnation at the entrance of the crushing zone, so that the crushing ability can be prevented from being reduced due to the mixture of the bulk.

[0007]

Embodiments of the present invention will be described below in detail with reference to the drawings. 1 to 3 relate to an embodiment of the present invention. FIG. 1 is a sectional perspective view of a cone crusher, FIG. 2 is an enlarged vertical sectional view of a main part of a liner, and FIG. 3 is an enlarged main part of a liner showing another embodiment. It is a longitudinal cross-sectional view.

In the figure, 1 is a counter shaft, 2 is a bevel gear, 3 is eccentric, 4 is a main shaft, 5 is a mantle, 6 is a cone cave, 7 is a crushing chamber, 8
Is a mantle liner and 9 is a corn cave liner. 8
a is an upper mantle liner (also called lower liner extension).

Next, the operation of the cone crusher of the present invention will be described.

When the counter shaft 1 is driven by a V-belt by an electric motor (not shown), the eccentric 3 is driven to rotate via the bevel gear 2 and the eccentric 3 is driven.
The main shaft 4 inserted from a slightly oblique direction (about 1 ° to 3 °) from the vertical direction rotates while performing eccentric movement. Therefore, the mantle 5 integrated with the main shaft 4 also performs eccentric rotation. With the rotation of the mantle 5, the mantle liner 8 attached to the outer peripheral portion of the cone-shaped mantle 5 rotates and simultaneously moves up and down while rotating, and the lower surface of the cone cable liner 9 attached to the fixed cone cable 6 The raw material is crushed in the crushing chamber 7 which is a space formed by the above. The cone cable liner 9 and the mantle liner 8, which are a pair of upper and lower liners that come into contact with these raw materials and compress and crush the raw materials, are made of wear-resistant materials, and can be replaced when the wear reaches the limit. It has a structure.

In the present invention, the corn cable liner 9 is used.
And the mantle liner 8 are each provided with a notch at the inlet of the crushing chamber 7. That is, as shown in FIG. 2, in the cone cable liner 9, the length of the crushing zone having the length B is shortened to the length A, and the cone cable liner inclination angle α _{1 is set} as a new inclination angle. formed to have a more 5 ° to 70 ° summed enlarged concave liner inclination angle alpha _3. The length of A is selected in the range of (0.1 to 0.9) B. On the other hand, for the mantle liner 8, the length of C is selected within the range of (0.1 to 0.9) D with respect to the original length D, and a notch is provided substantially horizontally. An annular protrusion 9Z is provided at the upper end of the cone cable liner 9 so as to protrude substantially horizontally inward, to prevent a large lump from floating during crushing, and to provide a space between the cone cable liner 9 and the mantle liner 8. Consideration is given so that the bulk material caught in the crushed material is quickly crushed. Horizontal dimension X, vertical dimension Y of protrusion 9Z
Is selected in the range of 5 to 50 mm and 20 to 50 mm, respectively. With the above-described configuration, a large lumps are formed at the entrance of the crushing chamber 7 to form a flared portion that is easy to bite. The dimensions A and C described above are the dimensions B and
As the size becomes smaller than the D dimension, there is an effect of making it easier to bite a large lump, but on the contrary, the crushing zone in which the actual crushing action is performed becomes shorter, so that the crushing ability decreases.
Therefore, it is desirable to determine the mixing probability of large lumps and the crushing ability comprehensively.

Compared with the conventional example of FIG. 4 (maximum biting diameter is 35 mm), A = 0.2B, C = 0.3D, α ₃ =
In the embodiment of FIG. 2 where α ₁ + 40 ° is selected, the maximum biting diameter is 157 mm, which is 4.5 times that of the conventional example. In this case, the crushing ability was hardly reduced, or even in some cases, was reduced to about 5 to 10%. This seems to be because a kind of preliminary crushing can be expected to some extent even in the newly formed flared portion. Fig. 3 shows that the zigzag corrugations 8A and 9A are provided at the end of the crushing chamber at the end of the crushing chamber to further improve the biting of large lumps and reduce the crushing capacity due to the decrease in the length of the crushing zone. It is something that has been suppressed.

As described above, in the cone crusher liner according to the present invention, the notch is provided at the entrance of the crushing chamber of the cone cable liner and the mantle liner to form a flared portion and a projecting portion. The provision of the slab facilitates the biting of large lumps, so that it is possible to prevent a sharp decrease in the crushing capacity due to stagnation of large lumps due to the inability to bite large lumps as in the conventional machine.

[0014]

As described above, in the liner for the cone crusher of the present invention, the notch is provided at the inlet of the crushing chamber of the cone cable liner and the mantle liner, and the projection is provided at the upper end of the cone cable liner. Large lump material can be easily entrapped, so even if a large lump exceeding the normal raw material size is mixed in to some extent, the crushing capacity will not decrease so much and the model number must be upgraded. In addition, normal crushing action can be continued, so that long-term continuous stable operation can be ensured without stopping the operation of the crusher, and reduction in running cost and initial payment cost can be achieved.

[Brief description of the drawings]

FIG. 1 is a sectional perspective view of a cone crusher showing one embodiment of the present invention.

FIG. 2 is an enlarged vertical sectional view of a main part of a pair of upper and lower liners showing one embodiment of the present invention.

FIG. 3 is an enlarged vertical sectional view of a main part of a pair of upper and lower liners showing another embodiment of the present invention.

FIG. 4 is an enlarged longitudinal sectional view of a main part of a conventional liner for a cone crusher.

[Explanation of symbols]

5 Mantle 6 Cone Cave 7 Crushing Room 8 Mantle Liner 8a Upper Mantle Liner 8A Zigzag Waveform 9 Cone Cave Liner 9A Zigzag Waveform 9Z Projection A Crush Zone Length B Crush Zone Length C Crush Zone Length D Crush Zone Length X horizontal dimension Y vertical dimension θ mantle inclination angle alpha ₁ concave liner inclination angle alpha ₂ mantle liner inclination angle alpha ₃ enlarged concave liner inclination angle of the protruding portion of the protruding portion

Claims (1)

(57) [Claims] 1. A crusher for crushing a cone crusher having a mantle tilt angle of 20 ° to 65 °, a cone cable liner tilt angle and a mantle liner tilt angle of 5 ° to 40 °, a crushing zone length of about 400 mm, and interparticle crushing. A cone cable liner and a mantle liner forming a chamber, wherein the angle of crushing at the entrance of the crushing zone of the cone cable liner is 5 ° to 70 ° larger than that of the cone cable and the length of the remaining crushing zone is equal to the original crushing length. A notch having a zone length of 0.1 to 0.9 is formed, and the length of the remaining crushing zone is substantially horizontal at the entrance of the crushing zone of the mantle liner, and the length of the remaining crushing zone is the length of the original crushing zone. 0.1 to 0.
9. A liner for a cone crusher, wherein a notch 9 is formed, and a substantially horizontal annular projection is extended inward at an upper end of the cone cable liner.