JPH059137B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a crusher, and in particular, a continuous type crusher for performing two-stage crushing to produce crushed products in the process of continuously moving crushed pieces in the horizontal direction. Regarding crushers.

[Conventional technology]

Traditionally, this type of continuous crusher
This is disclosed in Publication No. 35745, etc. In other words, the crushing rolls of a roll crusher that crush the material by impact are installed on top of a horizontal conveyor that moves in the horizontal direction, and the conveyor moves on a crushing table and changes direction to reverse the direction under the crushing table. Moving in a direction is an infinite motion. The conveyor used is a double chain scraper chain conveyor.

The debris transported by the conveyor is moved to the crushing rolls, where it is impact crushed in the crushing gap between the crushing rolls and the crushing table.
A broken product is obtained, which is then removed by a conveyor and transported to the outside.

In the above-mentioned roll crusher, when crushing relatively coarse crushed material, a large-diameter crushing roll is used to increase the above-mentioned biting and crush the material. Furthermore, if it is necessary to adjust the particle size of the crushed product, this is done by adjusting the crushing gap described above.

[Problem to be solved by the invention]

However, the following technical problems have been pointed out in the continuous crusher having such a structure.

(1) The crushing action of the crushed material is caused by the movement of the horizontal conveyor, where the crushed material stays in the crushing gap between the crushing roll and the crushing table, and is crushed by the impactor of the rotating crushing roll in the filled state. Since the crushed material is crushed by impact, repeated crushing accompanied by repulsion of the crushed products is substantially not performed in the crushing gap.

Therefore, it is not possible to crush the material at a high crushing ratio.

(2) In the crushing gap, the crushing roll rotation speed decreases or the rotation is interrupted due to overload caused by excessive crushing. In such a case, the load condition of the crushing roll drive source is detected, and when it increases to a predetermined value, the horizontal conveyor is stopped and the supply of crushed material is stopped until the crushing roll reaches the normal rotation speed and the load is reduced. In addition, in some cases, the horizontal conveyor is reversed and rotated forward again after the crushing rolls are operating normally, which causes the throughput of the crusher to fluctuate widely and reduces the throughput. .

(3) Since a scraper with a predetermined height is attached to the conveyor installed between the crushing roll and the crushing table, even if the crushing gap is reduced, the process of impact crushing by impacting the crushed material will not occur. Therefore, the crushed products accumulated between the upper surface of the scraper and the crushing table are discharged from the horizontal conveyor without being further crushed, and therefore are discharged without being able to significantly reduce the maximum particle size of the crushed products.

(4) In a roll crusher that performs impact crushing, components such as the crushing roll and crushing table are subject to significant wear due to the complex abrasion phenomenon that accompanies _impact crushing. The crushing of relatively small amounts of soft material is limited.

The present invention solves such conventional problems, and the invention as claimed in claim 1 includes, in addition to the first-stage crushing of the crushed materials between the crushing table and the crushing means, the second-stage crushing of the crushed materials. The purpose of the invention of claim 2 is to provide a continuous crusher that can perform two-stage crushing as well as crushing with repulsion and crush crushed materials at a high crushing ratio, Further, the invention of claim 3 provides a continuous crusher that can reduce the occurrence of wear and tear on members even when the crushed material is made of hard material, and can obtain fine-grained products. The purpose is to

[Means for Solving the Problem] In order to achieve the above object, the present invention provides the following:
The invention is a continuous crusher equipped with a horizontal conveyor housed in a casing and attached to a crushing table and a crushing means, the crushing means crushing material between the crushing table and the crushing table to produce crushed products. At the same time, an impact rotor having a striker is provided at a position adjacent to the discharge section of the horizontal conveyor where the crushed products fall, and a collision plate is provided in the casing to collide and repel the crushed products above the impact rotor. The invention of claim 2 is a continuous crusher characterized in that
In a continuous type crusher of the same type as in claim 1, the crushing means is a first rotor having a striking element. The crushing means is characterized in that it has a movable member, has an inclined surface with respect to the crushing table, and performs rocking motion around a support shaft of the movable member.

[Effect]

The present invention has the following effects due to the above configuration.

That is, under movement by a horizontal conveyor,
The crushed material is subjected to a first-stage crushing action between the crushing table and the crushing means to become crushed products, and subsequently, the crushed materials are fed from the discharge section of the horizontal conveyor to an impact rotor having a striking element, and are crushed by a collision plate. A second-stage crushing action is performed by repeated crushing with repulsion between the
Two-stage crushing is performed, and even if the crushed material is relatively coarse and hard, the crushed material can be crushed at a high overall crushing ratio.

〔Example〕

Hereinafter, one embodiment of the present invention will be explained with reference to the drawings. FIG. 1 is a schematic sectional view of a continuous crusher according to the present invention, FIG. 2 is a sectional view showing another embodiment of the crushing chamber, Fig. 3 is a diagram comparing the crushing characteristics of the present invention with those of the prior art, Fig. 4 is a schematic sectional view showing another embodiment of the continuous crusher, and Fig. 5 is another embodiment of the crushing means. FIG. 10
1 indicates a continuous crusher, and 11 indicates a first rotor which is a crushing means. The first rotor 11 is the crushing table 1
A rotor frame 12 is housed in a casing 18 above the rotor frame 12 and is coupled to the main shaft 14.
The first rotor 11 is rotatable in the direction of arrow A. Horizontal conveyors 15 are provided at the upper and lower parts of the crushing table 16 for infinite movement, and the horizontal conveyors 15 move in the direction of arrow B at the upper part and in the direction of arrow C at the lower part. This shows the discharge section provided. The horizontal conveyor 15 is, for example, a double chain type scraper chain conveyor, and is arranged in the horizontal direction. Reference numeral 19 designates a second rotor, which is an impact rotor, and is housed in the casing 18 adjacent to the first rotor 11 and adjacent to the discharge 17 of the horizontal conveyor 15. A collision plate 22 having a collision surface curved in the rotation direction D of the two rotors is attached to the casing 1.
It is attached to 8.

A crushing chamber 23 is formed in the space between the upper part of the second rotor 19 and the collision plate 22. 2nd rotor 1
The rotor frame 20 coupled to the main shaft 22 of 9 has a second striker 21, and the second rotor 19 is rotatable in the direction of arrow D.

Reference numeral 24 designates a discharge port provided at the lower part of the casing 18, through which crushed products obtained by crushing in the crushing chamber 23 are discharged.

Next, the operation of the above embodiment will be explained. In the above embodiment, the horizontal conveyor 15 is
The upper part of the horizontal conveyor 15 moves in the direction of arrow B, and when the crushed material is fed into the horizontal conveyor 15,
The debris moves above the crushing table 16 while being scraped by the scraper, enters the first rotor 11 section from the inlet 25, and stays and fills the crushing gap between the first rotor 11 and the crushing table 16. Then, it is struck by the first striking element 13 and crushed by impact, resulting in a coarsely crushed crushed product. Further, the movement of the shredded products progresses and is bent from the horizontal direction to the vertical direction by the direction changing section 17, and coarse ones of the shredded products enter the second rotor 19 section of the crushing chamber 23 and are accelerated by the second striker 21. is projected in the direction of the collision plate 22, collides with the collision plate 22, and reaches the second rotor 19 again due to repulsion.
The crushed products are repeatedly crushed with repulsion while being accelerated by the impactor 21, and the crushed products are discharged from the discharge port 24 with a high crushing ratio.

In the above-mentioned crushing process of the crushed products in the second rotor 19 section, among the crushed products from the first rotor 11 section, those with fine particle size are moved while being packed inside the scraper of the horizontal conveyor 15. The crushed products bend along the curved surface of the discharge part 17, move directly in the direction of arrow E without being affected by the impact action of the second rotor 19, and are discharged from the discharge port 24 under the sorting action as some crushed products. Therefore, the material can be crushed without excessive crushing.

In FIG. 2, the second rotor 19 is connected to the discharge section 17.
It has the same structure and operation and effect as the one shown in Figure 1, except that it has a step H and is placed adjacent to the position that receives all the crushed products from the horizontal conveyor, so it will be explained repeatedly. Omit what you do. In this embodiment, for example, when crushing reinforced concrete waste material, etc., as the crushing material,
The shredded products move on the upper part of the horizontal conveyor 15, are bent from the horizontal direction to the vertical direction by the direction changing section 17, and are lowered to the striking start point of the second rotor 19 section, after which all the shredded products are captured by the striker 17. Since the concrete is crushed and accelerated, sufficient crushing can be performed to obtain a crushed product with a reduced particle size, and the crushing can be ensured to significantly improve the separation of concrete pieces from reinforcing bars.

In FIG. 3, the parts according to the present invention are represented by solid lines, and the invention 1 shows the particle size of the crushed product of the first rotor, and the invention 2 shows the particle size of the crushed product of the second rotor. Those according to the prior art are represented by dotted lines, and the prior art 1 indicates the particle size of the crushed product of the first rotor, and the prior art 2 indicates the particle size of the crushed product of the second rotor.

As is clear in FIG. 3, according to the present invention, two-stage crushing is performed and compared to the prior art,
This indicates that the material is crushed under a high crushing ratio.

Furthermore, even when crushing crushed materials such as reinforced concrete waste, the crushed products are captured and accelerated by the second rotor, so it is possible to reliably crush and obtain crushed products with good separation of reinforcing bars and concrete pieces. I can do it.

In FIG. 4, reference numeral 33 indicates a frame, which is provided above the crushing table 16, has both side plates, and is connected by members so as to be parallel to each other. Reference numeral 41 indicates a main shaft, which is supported by a main bearing 39 provided on the frame 33, and an eccentric portion 42 is formed in the longitudinal direction of the main shaft 41.

Reference numeral 32 denotes a movable member, and one end of the movable member 32 is provided with a support shaft 32a, and a seat 37 is provided on the back surface of the other end of the movable member 32.

The support shaft 32a is a bearing 3 provided on the frame 33.
6, and the eccentric part 42 and the catch seat 37
are connected by a connecting member 38. Furthermore, an adjusting member (not shown) may be attached in the longitudinal direction of the connecting member 38 to make the length of the connecting member 38 variable.

In this way, the crushing means 31 is configured with the movable member 32, the frame 33, the bearing 36, the seat 37, the connecting member 38, the main bearing 39, the main shaft 41, the eccentric shaft 42, etc. as main parts.

The movable member 32 is arranged so that its surface is inclined with respect to the crushing table 16, 33a represents the inlet side of the crushing means, 33b represents the outlet side of the crushing means, and W represents the crushing gap. In this embodiment, the movable member 32 indicates the distance from the upper surface of the crushing table 16 at the outlet side 33b, and has a great influence on the particle size distribution of the crushed products.

In order to adjust the crushing gap, W, the adjustment work can be easily done by simply changing the gap between the eccentric part 42 and the catch seat 37 by adjusting the length of the adjusting material using, for example, a hydraulic cylinder. It is possible to

Reference numeral 43 indicates a pulley attached to the main shaft 41, which is driven by a drive device (not shown), and the pulley 43 can also form a flywheel.

The eccentric portion 42 rotates as the main shaft 41 rotates,
The connecting member 38 is given a substantially vertical reciprocating motion, and an axial force acts on the catch, causing the movable member 32 to swing around the support shaft 32a.

At this time, the horizontal conveyor 4 moves on the top of the crushing table 16 in the direction of arrow A, and when the crushed material is introduced into the horizontal conveyor 4, it moves on the top of the crushing table 16 while being scraped by the scraper of the horizontal conveyor 4. The material enters the continuous crusher through the inlet 33a, and in the process of being moved in the direction of the crushing gap W, the crushed material is compressed and crushed between it and the crushing table 16 by the rocking motion of the movable member 32, and the crushed material is crushed in the crushing gap W. The result is a crushed product with a particle size equivalent to W.

The parts other than the crushing means 31, such as the horizontal conveyor 15 and the crushing chamber in which the second stage crushing is performed, have the same configuration and function and effect as those shown in the first diagram, so they will not be explained repeatedly. omitted.

In FIG. 5, the second rotor 19 has a step with the discharge section 17, similar to the one in FIG. Like the one shown in FIG. 4, it has the same configuration and effects, so a redundant explanation will be omitted.

〔Effect of the invention〕

As is clear from the above embodiments, the present invention has the following effects.

Since the crushed material can be continuously crushed into crushed products in the process of being moved by a horizontal conveyor, the entire crushing equipment can be simplified and the height of the equipment can be reduced.

According to the invention of claim 1, in addition to the first stage of crushing of the crushed material between the crushing table and the crushing means, two stages of crushing are performed, including a second stage of crushing by repeated crushing with repulsion in the crushing chamber. Therefore, the material can be crushed at a high crushing ratio.

According to the invention of claim 2, a rotor having a striking element is used as the crushing means, and the rotor having a striking element having a shape suitable for coarse crushing is used to sufficiently crush coarse particles. Since the first-stage crushing is performed without including the crushing, the overall crushing ratio can be further increased.

According to the third aspect of the invention, since the crushing means performs the first stage crushing by swinging the movable member, even if hard crushed materials are crushed, the occurrence of wear and tear on the members is reduced. be able to.

[Brief explanation of the drawing]

Fig. 1 is a schematic sectional view of a continuous crusher according to the present invention, Fig. 2 is a sectional view showing another embodiment of the crushing chamber, and Fig. 3 compares the crushing characteristics of the present invention with those of the prior art. FIG. 4 is a schematic sectional view showing another embodiment of the continuous crusher, and FIG. 5 is a sectional view showing another embodiment of the crushing means. DESCRIPTION OF SYMBOLS 10... Continuous crusher, 11... Crushing means (first rotor), 13, 21... Striker, 15... Horizontal conveyor, 16... Crushing table, 18... Casing, 19... Impact rotor, 22... Collision plate, 23... Crushing chamber, 31...
Crushing means, 32...movable material.

Claims (1)

[Scope of Claims] 1. A continuous crusher equipped with a horizontal conveyor housed in a casing and attached to a crushing table and crushing means, which crushes crushed materials between the crushing table and the crushed products. an impact rotor having a striker is disposed at a position adjacent to the discharge section of the horizontal conveyor where the shredded products fall, and an impact plate that collides and repulses the shredded products above the impact rotor; A continuous crusher characterized by having a casing attached to the casing. 2. The continuous crusher according to claim 1, wherein the crushing means is a rotor having a striking element. 3. The continuous crusher according to claim 1, wherein the crushing means has a movable member, and has an inclined surface with respect to the crushing table to perform rocking motion around a support shaft of the movable member.