JPS62210061A - Revolving type crusher - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a rotary crusher such as a hydraulic or spring type cone crusher or a secondary shine tree crusher.

[Conventional technology]

Conventionally, a rotary crusher is configured as shown in FIG. 5, for example.

In the figure, reference numeral 1 denotes an upper frame, which is connected to the upper part of a lower frame 2 placed on a pedestal (not shown). An artificial hopper 3 is provided at the top of the upper frame 1, which serves as an inlet for materials to be crushed (not shown) such as rough stones and rocks, and an inner hopper 3, which serves as fixed teeth, is provided in the upper frame 1. A concave 4 in the shape of a truncated conical tube with a B1 smooth curved surface is attached.

On the other hand, as shown in FIG. 6, an eccentric sleeve 5 having an eccentric shaft hole 5a with an eccentric axis (u:e) L is rotatably fitted into the post 2a of the lower frame 2 via an outer cylindrical metal 6a. The lower end of the main shaft 7 is inserted into the shaft hole 5a of the eccentric sleeve 5 via the inner cylinder metal 6b, and the lower end of the main shaft 7 is inserted into the shaft hole 5a of the eccentric sleeve 5. Supported. The upper end of the main shaft 7 is supported by an upper bearing 8 such as a radial bearing.

The upper bearing 8 is supported by a snow slider 9 attached to the upper frame 1. A truncated conical mantle 10, which together with the main shaft 7 constitutes a crushing head, is attached to the main shaft 7 via a mantle core 11. The mantle lO serves as a movable tooth for the concave 4, and a crushing chamber 12 is formed between the mantle lO and the huncape 4.

On the other hand, at the lower end of the eccentric sleeve 5 through which the main shaft 7 is inserted,
A driven bevel gear 3 is attached, and a driving bevel gear 15 attached to the inner end of a horizontal rotating shaft 14 is meshed with the driven bevel gear 13. The horizontal rotating shaft 14 has a bearing 17 mounted on a casing 16 attached to the lower frame 2.
A V-pulley 18 is attached to the outer end of the horizontal rotating shaft 14 and is connected to an electric motor (both not shown) via a belt.

1- In order to crush objects to be crushed by the rotary crusher having the configuration described above, the electric motor is activated to rotate the eccentric sleeve 5, and at the same time, the objects to be crushed are introduced from the artificial hopper 3. As the lower end of the main shaft 7 rotates eccentrically due to the rotation of the eccentric sleeve 5, the mantle 10 similarly rotates eccentrically and the material to be crushed that falls into the crushing chamber 12 is crushed between the inner circumferential surface of the cape 4 and the outer circumference of the mantle IO. The crushed product falls while being compressed and crushed due to the change in the gap with the surface, and is discharged from the lower part of the crushing chamber 12 to the outside of the machine via the discharge f-1 (not shown) of the lower frame 2.

Therefore, the main shaft 7 of the rotary crusher rotates in different directions during no-load operation and during loaded operation.

That is, during no-load operation, as shown in FIG. 6, the main shaft 7 entangles with the eccentric sleeve 5 due to the viscosity of the lubricating oil, rotates in the same direction as the eccentric sleeve 5, and the rotational speed is not fixed. During load operation, as shown in FIG. 7, the material M to be crushed is present between the mantle 10, which is a movable tooth, and the concave 4, which is a fixed tooth. The eccentric sleeve 5 rotates in the opposite direction to the rotational direction (arrow indicated by a dotted line), and its rotational force has sufficient torque and is constant.

[Problem that the invention seeks to solve]

However, according to the above-mentioned conventional rotary crusher.

The processing capacity depends on the weight of the material to be crushed, and when the mantle diameter is constant, the processing amount is proportional to the inclination angle and the amount of swing (eccentric throw) of the mantle. Therefore, the following problems arise.

(1) If the inclination angle of the mantle is small, the amount of rocking of the mantle must be increased, which may result in difficult manufacturing, or may cause backing during operation depending on the nature of the material to be crushed. It becomes unstable.

(2) Since the processing capacity depends on gravity, there is a limit, and it becomes extremely uneconomical in the case of materials to be crushed with low A specific gravity or high porosity.

(3) The shape of the crushed product becomes flat and has long scratches, requiring the use of a separate machine for grain shape adjustment.

Therefore, even if the inclination angle of the mantle is small, the present invention can reduce the eccentric throw without reducing processing capacity, and can economically process materials to be crushed with low specific gravity. It is also an object of the present invention to provide a rotary crusher that can improve the particle shape of crushed products.

[Means for solving problems]

In order to solve the above problems, the rotary crusher of the present invention has the following features:
A blade is provided on the upper part of the outer periphery of the crushing head so as to be inclined toward the lower side of the crushing head in the rotational direction of the crushing head during load operation.

[For production]

The material to be crushed, which has been introduced into the crushing chamber, is sent downward by the crushing head and the rotating blades, is prevented from moving upward, and becomes compacted.

[Embodiment] An embodiment of the rotary crusher of the present invention will be explained with reference to FIGS. 1 to 4. In the following explanation 1-1, the same components as those in FIG. 5 are denoted by the same reference numerals 4-1', and their explanation will be omitted.

FIG. 1 is a cross-sectional view showing the main part of the first embodiment, and the btL crushing chamber 12 in the first embodiment is constructed by forming a conspicuous step on the inner circumferential surface of the concave 4. 12a
and a lower crushing chamber 12b. The upper part of the outer periphery of the mantle 10 facing the storage chamber 12a is sloped backward and downward in the direction of rotation of the head of the eyebrow crusher during load operation, in other words, in the direction of rotation of the main shaft 7 (so that the front side in the direction of rotation gradually becomes higher). A plurality of vanes 20 (inclined) are provided.

In the first embodiment, the crushed material is charged into the crushing chamber 12 and the storage chamber 12
The material to be crushed M stored in a is moved by a gravity tool L that acts on the material to be crushed by a plurality of blades 20 rotating together with the crushing head.
It is fed into the crushing chamber 12b under the feeding action of , and as a result, the throughput is significantly increased.

In addition, in a comparison test using an actual machine, the processing capacity was 1.
It became 6 times.

Also, due to the feeding action by the single blade 20, the crushing action chamber 1
The materials M to be crushed in 2b are effectively crushed by the eccentric rotation of the mantle 10 in a compacted state, and are adjusted to a good particle shape by the mutual frictional action of the materials M to be crushed.

Furthermore, since this feeding action can be obtained, the eccentric throw of the mantle lO can be reduced if the processing capacity is the same as before, and the set-under of the crushed product can be improved. be able to.

In addition, due to the feeding action of the blades 20, the material to be crushed M can be uniformly fed over the entire circumference of the crushing chamber 12, and uneven wear of the concave 4 and the mantle 1O, which serve as tooth plates, can be reduced.

FIG. 2 is a sectional view showing the main part of the second embodiment, and the crushing chamber 12 in the second embodiment is provided in the same way as in FIG. 5 by making the concave 4 into a truncated conical tube shape. . A plurality of blades 20 are provided on the upper part of the outer periphery of the mantle 10, as in the first embodiment, the blades 20 are inclined toward the rear and lower side in the direction of rotation of the mantle 10 during load operation.

Note that the operations and effects of the second embodiment are substantially the same as those of the first embodiment, so the explanation thereof will be omitted.

FIG. 3 is a sectional view showing the main part of the third embodiment, which shows a secondary shine tree crusher in which the concave 4 has a truncated inverted conical tube shape, and its mantle l
Similar to the first and second embodiments, a plurality of blades 20 are provided on the upper part of the outer periphery of the crusher O, and the blades 20 are inclined toward the rear and lower side in the rotational direction of the crushing head during load operation.

The functions and effects of the third embodiment are almost the same as those of the first embodiment, so their explanation will be omitted.

FIG. 4 is a cross-sectional view showing the main parts of the fourth embodiment, which shows a Pouimonds-type cone crusher in which a hun cape 4 is supported by a spring so as to be movable up and down, and the crushing head of the cone crusher is At the upper outer periphery of the mantle 10, a plurality of blades 20 are provided, which extend to the cylindrical part 10a connected to the upper part of the mantle 10, which is a tooth part, and which are inclined backward and downward in the rotational direction of the crushing head during load operation. is provided.

Note that the operations and effects of the fourth embodiment are substantially the same as those of the first embodiment, so the explanation thereof will be omitted.

Further, in each of the embodiments described above, a plurality of blades 20 are used; however, the blades 20 are not limited to this, but may be a single spiral blade tilted backward and downward in the rotational direction of the crushing head during load operation, for example. Of course, these blades should have an appropriate outer diameter that does not obstruct the access of the material to be crushed to the crushing chamber, and the angle of inclination of the blades should be adjusted to prevent backing, etc., depending on the properties of the material to be crushed. An appropriate angle is selected that will not cause any interference.

〔Effect of the invention〕

As described above, the rotary crusher of the present invention provides the following effects compared to the prior art.

(1) The material to be crushed that is introduced into the crushing chamber is subjected to a feeding action greater than gravity due to the blades that rotate together with the crushing head that rotates during load operation, so that processing j; E, that is, processing capacity can be significantly improved. I can do it.

(2) If the processing capacity is the same as the conventional one, the feeding action greater than the gravitational action of the blades is t! ), the eccentric throw of the malton can be reduced, there are no parts that are difficult to manufacture as in the past, and the machine can be made more compact.

(3) Since the eccentric throw of the malton can be reduced, it is possible to reduce the set under of the product.

(4) Due to the feeding action of the blades, the material to be crushed is fed uniformly over the entire circumference of the crushing chamber, so it is possible to reduce the unbalanced friction ↓L of the concave and mantle that serve as tooth plates.

(5) The material to be crushed in the crushing chamber can be compacted by the feeding action of the blades, so a sliding action occurs between the materials to be crushed, and the grain shape of the crushed product can be made into a good shape. .

[Brief explanation of drawings]

1 to 4 show embodiments of the rotary crusher of the present invention, and FIGS. 1, 2, 3, and 4 show the first embodiment, the second embodiment, and the rotary crusher of the present invention, respectively. A cross-sectional view of the main parts of the third embodiment and the fourth embodiment, and FIG.
FIG. 6 and FIG. 7 are explanatory diagrams of the operation of the main parts, respectively. 4-11 Conocave 7----Main car 10---Mantle (teeth) 10a--One cylinder))

Claims (5)

[Claims] (1) A rotary crusher characterized in that a blade is provided on the upper outer periphery of the crushing head and is inclined toward the rear and lower side in the rotational direction of the crushing head during load operation. (2) The rotary crusher according to claim 1, wherein the blades are formed in toothed portions. (3) The rotary crusher according to claim 1, wherein the blade is formed astride the tooth portion and the cylindrical portion. (4) The rotary crusher according to claim 1, wherein the blade is a single spiral blade. (5) The rotary crusher according to claim 1, wherein the blades include a plurality of blades equally spaced in the circumferential direction.