JP2700433B2 - Crushing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a crusher. More specifically, an improvement relating to a discharge structure of crushed particles generated by crushing processing in a vertical crushing apparatus that crushes crushed material made of metal material, synthetic resin material, or the like as a raw material by rotating impact. About.

[0002]

2. Description of the Related Art Conventionally, as a crushing device, for example, FIG.
The following are known.

This conventional crushing apparatus is of a vertical type, and a crushing mechanism 2 for crushing a crushed material by a rotational impact is provided in a substantially vertical direction at the center of an inverted conical cylindrical crushing chamber 1. It is rotatably supported by the shaft 3 and is provided inside the crushing chamber 1. The crushing mechanism 2 includes a plurality of rotor disks 21 that are fixed to the rotor shaft 3 in a hierarchical manner and rotate about the rotor shaft 3, and pins 2 that are arranged concentrically with the rotor shaft 3 and penetrate through each rotor disk 21.
And a crushing blade 23 which is fitted between and supported by the pins 22 between the rotor disks 21 and revolves around the rotor shaft 3, rotates (rotates) about the pins 22, and collides with the crushed material. The rotor shaft 3 is connected via a belt 4 to a motor 5 as a drive source. An input port 11 provided with an input mechanism 6 such as a cylinder for inputting the crushed material into the crushing chamber 1 is provided at an upper portion of the crushing chamber 1, and a lower portion of the crushing chamber 1 is provided by the crushing mechanism 2. An outlet 12 for discharging the crushed crushed particles from the crushing chamber 1 is provided. In addition, the side wall 13, top wall 14,
A replaceable reinforcing plate 16 is attached to the bottom wall 15 to provide wear resistance. In particular, on the side wall 13,
Rib 17 for colliding the crushing material to enhance the crushing effect
And a shelf 18 are provided.

Further, this conventional crushing apparatus has a crushing chamber 1
A discharge mechanism 7 is provided in the vicinity of the bottom wall 15 below the shelf 18 and around the rotor shaft 3 to rotate around the rotor shaft 3 and guide the crushed particles to a discharge port. The discharge mechanism 7 is in the form of an arm configured to rotate independently of the rotor shaft 3, and crushed particles deposited on the bottom wall 15 (reinforcement plate 16) of the crushing chamber 1 are discharged to the discharge port 12. It works to sweep away.

In such a conventional crushing device, when the discharge mechanism 7 sweeps out the crushed particles, the crushed particles are sandwiched between the discharge mechanism 7 and the bottom wall 15 (reinforcement plate 16) and kneaded. Therefore, the discharge mechanism 7 and the bottom wall 15 (reinforcement plate 16) are severely abraded, and the replacement of the reinforcement plate 16 attached to the bottom wall 15 is frequently required, and even the replacement of the discharge mechanism 7 itself is required. There is also a problem.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in consideration of the above-mentioned problems, and provides a crushing apparatus capable of reducing abrasion damage between a bottom wall of a crushing chamber and a discharge mechanism. As an issue.

[0007]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention relates to a crushing chamber provided with an inlet for crushing material at an upper portion, and a rotor shaft vertically disposed inside the crushing chamber. , A crushing mechanism that is rotatably supported by the rotor shaft and crushes the crushed material by rotational impact, an outlet that discharges the crushed particles crushed by the crushing mechanism from the lower part of the crushing chamber, and a crusher that rotates around the rotor shaft and crushes to the outlet. In a crushing apparatus including a discharge mechanism for discharging and guiding the particles, the discharge mechanism has a discharge plate and a scraping plate, and the discharge plate has a small gap between the bottom wall and the bottom wall in the crushing chamber. It is coaxially fixed to the rotor shaft in a board shape that covers most of the parts, and the scraping plate is formed into a plate shape by superimposing a reinforcing plate and stands almost radially from the rotor shaft on one or both of the top and side surfaces of the discharge board Hand characterized by being provided The adopted.

[0008]

According to the above-mentioned means, there is only a slight gap for the rotation of the latter between the bottom wall of the crushing chamber and the discharge plate of the discharge mechanism, and most of the bottom wall is formed by the discharge plate. Since it is covered, the crushed particles do not enter between the bottom wall and the discharge plate. The crushed particles falling on the discharge board are discharged and guided to the discharge port so as to be flipped toward the side wall of the crushing chamber by centrifugal force or the like between the rotating discharge board and the scraping plate provided on the discharge board. The scraping plate which may collide with the crushed particles has abrasion resistance enhanced by the reinforcing plate. For this reason, the discharge mechanism,
It is possible to solve the problem of providing a crushing device that eliminates the necessity of kneading crushed particles between the bottom walls and can reduce wear damage between the bottom wall of the crushing chamber and the discharge mechanism.

[0009]

FIG. 1 shows an embodiment of a crushing apparatus according to the present invention.
This will be described with reference to FIGS.

FIGS. 1 to 4 show a first embodiment of a crusher according to the present invention.

In this embodiment, a structure substantially similar to that of the conventional example shown in FIG. 7 is shown.

The discharge mechanism 7 of this embodiment comprises a discharge plate 71 and a scraping plate 72.

As shown in detail in FIGS. 2 and 3, the discharge plate 71 is formed in a disk shape so as to cover most of the bottom wall 15 (including the reinforcing plate 16) of the crushing chamber 1. As shown in detail in FIG. 2, the discharge plate 71 is coaxially fixed to the rotor shaft 3 with a small gap H between the discharge plate 71 and the bottom wall 15 (including the reinforcing plate 16) of the crushing chamber 1. As a result, the rotor rotates integrally with the rotor shaft 3.

As shown in detail in FIGS. 2 and 3, the lower surface of the discharge plate 71 is spaced from the radial line of the discharge plate 71 at a slight inclination angle A, as shown in detail in FIGS. A supplementary scraping plate 73 is provided. The auxiliary scraping plate 73 scrapes out the crushed particles rarely entering the small gap H between the bottom wall 15 (including the reinforcing plate 16) of the crushing chamber 1 and discharges the crushed grains from the gap H. On the lower surface of the discharge plate 71 near the rotor shaft 3, as shown in detail in FIG. 2, a ring-shaped protective cover 74 that protects and covers the bearing portion of the rotor shaft 3 to the bottom wall 15 from crushed particles. Is provided.

As shown in detail in FIGS. 2 to 4, the scraping plate 72 is formed in a highly wear-resistant plate shape on which an exchangeable reinforcing plate 72 'is overlapped. It is provided upright, and is arranged radially from the rotor shaft at regular intervals so as to have a slight inclination angle B with respect to the diameter line of the discharge plate 71. As shown in FIGS. 3 and 4, the rotor disk 21 just above the discharge plate 71 of this embodiment is used.
Is formed with a notch 21 ′ for dropping the crushed material and crushed particles to prevent the crushed material from being caught between the rotor disk 21 or the crushing blade 23 and the side wall 13 of the crushing chamber 1. For this reason, the scraping plate 72 is not disposed immediately below the notch 21 'so as not to be directly hit by the fall of the crushed material and crushed particles from the notch 21'.

According to this embodiment, the bottom wall 15 (including the reinforcing plate 16) of the crushing chamber 1 and the discharge plate 71 of the discharge mechanism 7 are provided.
And only a slight gap H exists between them, and
Since the discharge disk 71 rotates at a high speed similarly to the rotor disk 21 and a centrifugal force acts, crushed particles hardly enter the gap H. Even if crushed particles enter the gap H, the rotor shaft 3 rotates and the discharge plate 7
When 1 rotates, the centrifugal force and collision of the auxiliary scraping plate 7 provided on the lower surface of the discharge board 71 causes the auxiliary scraping plate 7 to be scraped and discharged from the gap H toward the side wall 13 of the crushing chamber 1.

Further, since most of the bottom wall 15 (including the reinforcing plate 16) of the crushing chamber 1 is covered by the discharge plate 71, crushed particles falling on the rotating discharge plate 71 are not discharged.
1 is ejected by the centrifugal force and collision of the scraping plate 72 and discharged from the discharge port 12. Therefore, the discharging mechanism 7
There is no need to knead crushed particles between the crushing chamber 1 and the bottom wall 15 of the crushing chamber 1.

FIG. 5 shows a second embodiment of the crusher according to the present invention.

In this embodiment, as is apparent from comparison with FIG. 3, the scraping plates 72 are arranged at equal intervals.

According to such an embodiment, there is an advantage that it is suitable when the rotor disk 21 immediately above the discharge disk 71 is a normal disk shape having no notch 21 '.

FIG. 6 shows a third embodiment of the crusher according to the present invention.

In this embodiment, a scraping plate 72 is also provided on the side of the discharge board 71.

According to such an embodiment, the discharge plate 71,
The crushed particles flipped toward the side wall 13 of the crushing chamber 1 due to the centrifugal force of the scraping plate 72, collision, or the like are swept out by the scraping plate 72 provided on the side surface of the discharge plate 71, and the crushed particles are deposited near the side wall 13. This has the advantage of improving crushed particle discharge performance.

In addition to the embodiment shown above, a discharge plate 71
It is also possible to provide an embodiment in which the scraping plate 72 is provided only on the side surface and the scraping plate 72 is not provided on the upper surface.

[0025]

As described above, the crushing device according to the present invention has the following features.
The discharge mechanism consisting of a discharge plate and a scraping plate flicks and discharges the crushed particles and eliminates the need to knead between the discharge mechanism and the bottom wall of the crushing chamber. Therefore, there is an effect that wear damage to the bottom wall of the crushing chamber and the discharge mechanism is reduced. Also, due to this effect,
The frequency of abrasion replacement of the reinforcing plate attached to the bottom wall of the crushing chamber and the discharge mechanism itself can be reduced, and the operation stop time of the apparatus due to the abrasion replacement can be reduced.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a first embodiment of a crusher according to the present invention.

FIG. 2 is an enlarged sectional view of a main part of FIG.

FIG. 3 is an enlarged sectional view taken along line XX of FIG. 1;

FIG. 4 is an enlarged sectional view taken along the line YY of FIG. 1;

FIG. 5 is a cross-sectional view showing a second embodiment of the crushing apparatus according to the present invention and corresponding to FIG.

FIG. 6 is a sectional view showing a third embodiment of the crushing apparatus according to the present invention and corresponding to FIG. 2;

FIG. 7 is a sectional view showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Crushing chamber 11 Inlet 12 Discharge port 15 Bottom wall 2 Crushing mechanism 3 Rotor shaft 7 Discharge mechanism 71 Discharge board 72 Scrape plate

Claims (1)

(57) [Claims] 1. A crushing chamber provided with an inlet for crushing material at an upper portion thereof, a rotor shaft disposed vertically inside the crushing chamber, and a crushing material crushed by a rotational impact supported by the rotor shaft. A crushing device comprising a crushing mechanism, a discharge port for discharging crushed particles crushed by the crushing mechanism from a lower portion of the crushing chamber, and a discharge mechanism that rotates around a rotor shaft and guides the crushed particles to the discharge port. , The discharge mechanism has a discharge plate and a scraping plate, and the discharge plate is coaxially fixed to the rotor shaft in a disk shape that covers most of the bottom wall through a slight gap between the bottom wall in the crushing chamber, A crushing apparatus characterized in that the scraping plate is formed in a plate shape by laminating a reinforcing plate, and is provided on one or both of the upper surface and the side surface of the discharge plate so as to stand substantially radially from the rotor shaft.