KR20130006306U - Rotor for vertical impact crusher - Google Patents

Abstract

The present invention relates to a vertical impact crusher that produces aggregates or sand by crushing rock, and is installed to be located at the center of the crushing chamber constituting the vertical impact crusher to rotate and to rotate the raw stone introduced from the upper side In the rotor for vertical impact crusher which accelerates at a high speed and then fires in the circumferential direction toward the inner wall of the crushing chamber, the rotor is formed so as to protrude downward from the center of the upper plate, the lower plate of the rotor, and the lower plate of the rotor to drive the rotational driving force from the driving motor. A rotor boss connected to the bearing cartridge provided, and at least one scraper coupled to the bottom of the rotor lower plate so as to be positioned around the rotor boss to prevent sand generated during the crushing process from being accumulated in the lower space of the rotor lower plate. By providing a rotor for a vertical impact crusher, As the sand produced during the process is prevented from accumulating in the lower space of the lower plate of the rotor, the wear of the lower portion of the rotor including the lower plate of the rotor is significantly reduced, thereby extending the life of the rotor and significantly reducing the cost of replacement or repair. It provides the effect of making it possible.

Description

Rotor for vertical impact crushers {ROTOR FOR VERTICAL IMPACT CRUSHER}

The present invention relates to a vertical impact crusher that produces aggregates or sand by crushing rock, and more particularly, the sand generated during the crushing process is accumulated in the lower space of the rotor that accelerates and fires the injected raw stone in the circumferential direction. It relates to a rotor for a vertical impact crusher to prevent wear.

In general, aggregate or sand can be collected in a natural state, but at present, due to an increase in demand, artificially crushed aggregates collected in nature are used to obtain desired sand or aggregates, and crushed rocks collected from mines or quarries, etc. The aggregate obtained by making the aggregate is called coarse aggregate, and the sand obtained by crushing the rock is called crushed sand, that is, crushed sand.

1 is a partial cutaway perspective view schematically showing an example of a vertical impact crusher according to the prior art, FIG. 2 is a perspective view showing the rotor according to the prior art from below, and FIG. 3 schematically shows the rotor of FIG. 2. One cross section.

As shown in Figure 1, the vertical impact crusher according to the prior art, having a means for adjusting the input amount of the upper feed hopper 110, the raw material is inserted into the hopper is installed in the lower portion of the hopper 110 in the circumferential direction The crushing chamber 120 in which the build-up 125 of the shape of the raw material stones stacked around the inner diameter side is formed, and the bearing cartridge 135 installed in the lower portion of the crushing chamber 120 and driven by the driving motor 100. Rotor drive is coupled to the upper portion of the bearing cartridge 135 so as to be located in the center of the rotor base 130, and the crushing chamber 120 to rotate the direction of the raw stone is injected from the upper side and then accelerated at a high speed And a rotor 200 projecting in the circumferential direction toward the inner wall of the crush chamber 120.

Such a crusher, when the raw material is introduced through the supply hopper 110, the raw material falling to the lower is introduced into the rotor 200 is rotated at high speed, the raw material introduced into the rotor 200 is first rotor 200 Is dispersed in the circumferential direction while the direction is changed from the center to the side, the raw stone dispersed in the lateral direction is accelerated by a high speed of about 50 to 85 m / s by the centrifugal force of the rotating rotor 200, for example It is launched outward toward the inner wall of the crush chamber 120. Subsequently, the raw material stone fired to the outside of the rotor 200 by the centrifugal force does not pass through the build-up 125 or the rotor 200 formed in a form in which the raw material stones are stacked on the inner wall of the crushing chamber 120. In the process of colliding with the raw stone falling directly to the crushing chamber 120 from 110, it is crushed finely by the impact, falls along the circumference of the bearing cartridge 135 of the lower crushed raw stone crushing chamber 120 to the outside of the crusher As it is discharged, it is possible to obtain sand and aggregate having the required shape and size.

2 and 3, the rotor 200 according to the prior art is formed to protrude downward from the center of the rotor upper plate 205, the rotor lower plate 215, and the rotor lower plate 215. It includes a rotor boss 225 connected to the bearing cartridge 135 is installed on the rotor base 130. The rotor 200 is generated during the shredding process, and due to the sand accumulated in the lower space of the rotor lower plate 215, the lower portion of the rotor 200 rapidly wears down, thereby shortening the lifespan and thus replacing or repairing the rotor 200. It is a situation that there is a problem inevitably costly.

In order to solve the problems of the prior art as described above,

The object of the present invention is to provide a rotor for a vertical impact crusher to reduce the wear of the lower portion of the rotor including the rotor lower plate by preventing the sand produced during the crushing process in the lower space of the rotor.

The present invention for realizing this,

It is installed to be located in the center of the crushing chamber constituting the vertical impact crusher is rotated and vertically rotated the raw stone introduced from the upper side and accelerated at a high speed vertically firing in the circumferential direction toward the inner wall of the crushing chamber In the rotor for impact crushers,

The rotor upper plate, the rotor lower plate, a rotor boss which is formed to protrude downward from the center of the rotor lower plate is connected to the bearing cartridge receives a rotational driving force from the drive motor, and coupled to the bottom surface of the rotor lower plate to be located around the rotor boss Is provided in the lower space of the rotor lower plate provides a rotor for a vertical impact crusher, characterized in that it comprises one or more scrapers to prevent the sand generated during the crushing process to accumulate.

The scrapers may be coupled to the bottom surface of the rotor lower plate to be parallel to the radial direction.

In addition, the scraper is characterized in that it comprises a cemented carbide tip attached to each of the rotational direction front portion.

Further, the scraper includes two or more, characterized in that disposed at equal intervals around the rotor boss.

By providing a rotor for a vertical impact crusher as described above, the present invention prevents the sand generated during the crushing process to accumulate in the lower space of the rotor lower plate to significantly reduce the wear of the lower rotor including the rotor lower plate It also provides the effect of extending the life of the rotor, significantly reducing the cost of replacement or repair.

1 is a partial cutaway perspective view schematically showing an example of a vertical impact crusher according to the prior art,
2 is a perspective view showing the rotor according to the prior art from below;
3 is a cross-sectional view schematically showing the rotor of FIG.
Figure 4 is a perspective view showing a rotor for a vertical impact crusher according to an embodiment of the present invention from below,
5 is a cross-sectional view schematically showing a rotor for a vertical impact crusher according to the embodiment of FIG.
6 is a perspective view showing the scraper according to the embodiment of FIG. 4 from below;
Figure 7 is a perspective view showing a scraper from below according to another embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention will be described in more detail. For reference, in describing the present invention, the same reference numerals will be given to the components corresponding to those of the prior art and the description thereof will be omitted.

Figure 4 is a perspective view showing a rotor for a vertical impact crusher according to an embodiment of the present invention from below, Figure 5 is a cross-sectional view schematically showing the rotor for a vertical impact crusher according to the embodiment of Figure 4, Figure 6 4 is a perspective view showing the scraper according to the embodiment of FIG. 4 from below, and FIG. 7 is a perspective view showing the scraper according to another preferred embodiment of the present invention from below.

The rotor 200 ′ for the vertical impact crusher according to the preferred embodiment of the present invention is installed so as to be positioned at the center of the crushing chamber 120 constituting the vertical impact crusher and rotates, and the raw stone introduced from the upper side is laterally oriented. As shown in Figs. 4 and 5, the rotor upper plate 205, the rotor lower plate 215, and the rotor lower plate are accelerated at a high speed and then fired in the circumferential direction toward the inner wall of the crushing chamber 120. Rotor boss 225 is formed to protrude downward from the center of the 215 and connected to the bearing cartridge 135 receives a rotational driving force from the drive motor 100, and the rotor lower plate 215 to be positioned around the rotor boss It is coupled to the bottom surface of the rotor lower plate 215 includes one or more scrapers 250 to prevent the sand generated during the crushing process to accumulate in the lower space.

More specifically, as shown in FIG. 6, the scrapers 250 are elongated to have a cross-section of a '-' shape, and the bottom surface of the rotor lower plate 215 using fastening members such as bolts 255 and the like. Are coupled to lie parallel to the radial direction. In addition, the scraper 250 includes a cemented carbide tip 265 attached to a portion which is located at the front surface in the rotational direction in a state in which it is coupled to the rotor lower plate 215, respectively. Such a carbide tip 265 may be made of a cemented carbide including a material of ultrahardness such as tungsten, and may be attached through, for example, a blazing process. Furthermore, as it has such a carbide tip, the scraper 250 is significantly increased resistance to wear.

On the other hand, as in accordance with another preferred embodiment of the present invention, the scraper 250 ', as shown in Figure 7, is not formed to have a' b 'shaped cross section to be formed in an elongated bar shape having a rectangular cross section It may be. Even in this case, the scraper 250 'is coupled to the bottom surface of the rotor lower plate 215 in parallel with the radial direction by using a fastening member such as a bolt, respectively, and the front of the rotation direction in the state coupled to the rotor lower plate 215, respectively. Carbide tip 265 'attached to the portion to be located through the blazing process.

Two or more scrapers 250 and 250 ′ according to the present invention as described above are preferably included, and are preferably disposed at equal intervals around the rotor boss 225. For reference, the scraper 250 is provided in the embodiment of FIG. 4, and is disposed at equal intervals of 120 ° intervals.

The scrapers 250 and 250 ′ as described above effectively prevent the sand generated during the shredding process from accumulating in the lower space of the lower plate of the rotor 215, so that the sand generated during the shredding process is the lower rotor 215. It is possible to prevent abrasion due to friction with the lower components of the rotor (200 ') including, so as to extend the life of the components constituting the rotor (200') including the rotor lower plate 215 In addition to this, the cost of replacement and repair can be significantly reduced.

In addition, such a scraper 250 (250 ') can be easily repaired by replacing only the scraper when damaged by wear, so that maintenance can be easily performed.

100: drive motor 110: feed hopper
120: crush chamber 130: rotor base
135: bearing cartridge 200, 200 ': rotor
205: rotor top plate 215: rotor bottom plate
225: rotor boss 250, 250 ': scraper
255: Bolt 265, 265 ': Carbide tip

Claims (2)

It is installed to be located in the center of the crushing chamber constituting the vertical impact crusher is rotated and vertically turning the raw stone introduced from the upper side laterally accelerated at a high speed to shoot in the circumferential direction toward the inner wall of the crushing chamber In the rotor for impact crushers,
Rotor boss is formed so as to project downward from the center of the rotor upper plate, the rotor lower plate, the rotor lower plate connected to the bearing cartridge receives a rotation driving force from the drive motor and the rotor boss is disposed at equal intervals around the rotor boss radius of the rotor lower plate Comprising two or more scrapers coupled to the bottom surface of the rotor lower plate to be parallel to the direction,
Thereby, the rotor for the vertical impact crusher, characterized in that to prevent the sand generated during the crushing process to accumulate in the lower space of the rotor lower plate. The method of claim 1,
The scraper is a rotor for a vertical impact crusher, characterized in that it comprises a carbide tip attached to each of the front portion in the rotation direction.

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