KR200201990Y1 - Falling sand grinder - Google Patents

Abstract

The present invention relates to a drop-type sand polishing apparatus, and according to the conventional grinding machine, the grinding force is not properly polished because the crushed particles collide with each other, and thus the grinding state of the crushed particles is poor. Particles could not be obtained and sand particles with even particle distribution could not be obtained.

The present invention to solve this problem is stored in the sand and the sand is formed in a wider shape than the lower end so that the sand can be lowered down and the sand storage unit 401 formed with a drop hole (401a) at the bottom; Two roller housings 418 are installed in the lower portion of the sand storage unit 401, so that the abrasive grains falling from the sand storage unit 401 are polished while colliding with each other or touching the ground plane. A polishing unit 402 installed and in which the pair of tire rollers 402a abut on each other in the roller housing 418; A driving unit 403 connected to the roller housing 418 of the polishing unit 402 by a belt or a chain to transmit rotational force; It is to provide a drop-type sand polishing apparatus provided with; a support portion 408 is divided into multiple stages to support the above devices.

Description

Droplet Sand Grinding Device

The present invention relates to a drop-type sand polishing apparatus, and more particularly, sand is dropped between the ground planes of the tire rollers where the ground planes are in contact with each other, and the sands are polished or bumped to each other while passing through the tire rollers. The present invention relates to a drop sand polishing apparatus, which is polished by grinding.

In general, in order to prepare sand using masato as a raw material, first, a huge mass of rock is broken into pieces of a certain size (5 cm or less), and then finely crushed into a particle size of sand with a grinder, and then the crushed (crushed) particles Only sharp corners should be polished to be sandable.

Previously, these finely divided crushed particles were transported by a screw or put in a barrel and rotated so that the crushed particles collided with each other and polished.

According to the conventional grinding machine, the grinding force is weakly rubbed in the process of colliding with each other, and thus grinding is not performed properly. Therefore, the grinding state of the grinding particles is poor, so that excellent sand particles such as natural sand cannot be obtained. Could not get the problem.

An object of the present invention is to research and develop to solve the conventional problems and wastes, and to provide a drop-type sand polishing device that rubs the crushed particles strongly with each other to smoothly polish them.

In order to achieve the above object, the present invention provides a sand storage unit having a drop hole formed at the bottom to store sand and to allow sand to fall downward; In the lower part of the sand storage unit, two roller housings are installed in parallel in the horizontal direction so that the abrasive particles falling from the sand storage unit hit each other or touch the ground plane, and a pair of tire rollers are fitted to each other. Abutting polished portion; A driving unit connected to the roller housing of the polishing unit to transmit rotational force; The support is divided into a plurality of stages to support the above devices; is characterized in that the sand sanding device provided.

In addition, the roller housing is characterized by a drop-type sand polishing apparatus provided with a cam shaft having a plurality of cams on one concentric axis so that vibration is generated while the roller housing is rotated.

And a pair of tire rollers that are rotated in contact with each other in the polishing unit is connected to rotate or rotate in different directions while sliding relative to each other because the rotational speed is different from each other, a pair of neighboring tire rollers while maintaining a constant distance in the vertical direction It is characterized by the multi-stage falling sand polishing device.

1 is a schematic perspective view of a drop sand polishing apparatus according to the present invention.

Figure 2 is an exploded perspective view showing a drop-type sand polishing device that is the main part of the present invention.

3 is a cross-sectional view of the tire roller according to the present invention.

4 is a detailed view showing a part of a cross-sectional view taken along line A-A of FIG.

* Explanation of symbols for main parts of the drawings

401: sand storage unit 401a: drop hole

402: grinding unit 402a: tire roller

403: roller reduction drive motor 404: chain

405: sprocket 406: vibration cam drive motor

407: V-belt 408: support portion

409 chute 410 roller cover

411: roller side cover 412: cam bearing support bushing

413: cam bearing 414: camshaft

415: cam 416: camshaft bearing case

417: cam pulley 418: roller housing

419: housing flange 420: housing bearing

421: roller buffer 422: rubber ring

423: tire roller wheel 424: flange bolt

425: the sprinkler

Hereinafter, specific features of the present invention will be easily understood by referring to the present invention in detail with reference to the accompanying drawings.

As shown in FIGS. 1 to 4, the sand storage unit 401 for storing abrasive particles to be polished, and the polishing unit 402 for pressing and rubbing the abrasive particles falling from the sand storage unit 401 and And a support portion 408 for supporting both ends of the roller housing 418 of the polishing portion 402, and a driving portion 403 which is a roller reduction drive motor for rotating each tire roller 402a of the polishing portion 402. It is.

The sand storage unit 401 has an upper end wider than the lower end thereof, and the upper side thereof is open. A lower hole 401 a is formed at the lower end thereof so that sand particles may fall downward. The sprinkler 425 is installed so that the particles easily fall downward.

The polishing unit 402 is arranged in a shape in which the ground surfaces of a pair of long tire rollers 402a connected to a plurality of tires are in contact with each other, and a long disk-shaped roller housing is formed at the center of the tire roller 402a. 418 is provided, and a housing flange 419 having a protruding ring shape is formed at an outer circumference of the position where the tire rollers 402a are in contact with each other, and the tire roller wheels (19) supporting the tires at the housing flanges 419, respectively. 423 is fastened by several flange bolts 424.

The roller housing 418 is provided with a housing bearing 420 rotatably supporting the outer circumference of the roller housing 418 at both ends thereof, and the vibration of the roller housing 418 is supported at the bottom of the housing bearing 420. A roller buffer 421 is provided to prevent delivery to 408.

One side end of the roller housing 418 is provided with a sprocket 405 for receiving the driving force of the roller reduction drive motor 403, a pair of tire rollers (402a) in contact with each other are rotated slightly in the same direction They must be connected to have a speed difference or to be rotated in different directions. This is because the abrasive particles can be more effectively rubbed.

In addition, a camshaft 414 having at least two cams 415 is provided in the roller housing 418 to vibrate the roller housing 418, and one side end of the camshaft 414 has a vibration cam driving motor. The cam pulley 417 that receives the power of the power 406 is connected, and one side of the cam pulley 417 is provided with a cam shaft bearing case 416 for supporting the cam shaft 414. Meanwhile, a cam bearing 413 is covered on the outer circumference of the cam 415, and the cam bearing support bushing 412 is wrapped on the outer circumference of the cam bearing 413.

In addition, long semi-cylindrical roller covers 410 are provided to prevent the abrasive particles polished to both sides in the axial direction except for the ground portion of the tire roller 402a from being radially separated from each other, and are provided at both ends of the tire roller 402a. In order to prevent the sand particles from being separated at both ends, the roller side cover 411 of the overlapping shape of two circles is provided, respectively.

Between the tires of the tire roller 402a constituting the polishing portion 402, a ring-shaped rubber ring 422 is inserted between the tires to provide an even ground surface. 402a) is provided in multiple stages while maintaining a constant interval in the up and down direction, and a funnel-shaped chute 409 having an open top and bottom to move sand polished sand to the next step below the tire roller 402a at the bottom of the bottom. It is prepared.

The support part 408 is formed in a shape in which a rectangular bar is partitioned by connecting layers, and a sand storage part 401 is supported at an upper end thereof, and below the roller housing 418 of the tire roller 402a, respectively. An installed bottom surface of the housing bearing 420 is supported with the roller buffer 421 interposed therebetween. In addition, roller deceleration drive motors 403 and vibration cam drive motors are connected to both sprockets 405 and cam pulleys 417 and chains 404 and v-belts 407 on both sides of the tire roller 402a. 406 is provided.

The present invention of such a configuration is the roller reduction drive motor 403 and the vibration cam drive motor 406 is operated and the sprayer 425 of the sand storage unit 401 is operated. When the camshaft 414 is rotated by the vibration cam driving motor 406 as described above, the roller housing 418 rotates while being vibrated, and the vibration is transmitted to the polishing unit 402. At this time, the pair of roller housings 402a contacted with each other are driven by different roller reduction driving motors 403, but all rotate in the same direction while being rotated with a slight rotational speed difference.

In this state, the tire roller 402a of the roller housing 418 rotates while the abrasive particles stored in the sand storage unit 401 together with the water of the sprayer 425 fall in the sand storage unit 401. It falls down through the hole 401a and is injected into the ground plane of the uppermost polishing unit 402.

Thus, the abrasive particles introduced into the polishing unit 402 starts to be polished by rubbing the books in the pressed state by the ground plane of the tire roller 402a which is in close contact rotation at different rotational speeds. Here, the tire roller 402a polishes the abrasive particles by the vibration and the rotational speed difference.

The vibration of the tire roller 402a generated by the vibration rotation is attenuated by the roller complete layer 421 provided between the bottom surface of the housing bearing 420 of the roller housing 418 and the support part 408. At this time, each tire of the tire roll 402a should be properly adjusted to low pressure to increase the compressed strength of the ground plane.

By the roller cover 410 and the roller side cover 411 of the tire roller 402a, sand particles do not escape to the outside and fall only downwards, and the sand particles are mixed with water supplied from the sprinkler 245. By being thrown in, the foreign matter mixed in the abrasive particles is washed down without sticking to the ground plane of the tire roller 402a.

During this process, the abrasive particles are subjected to the same polishing process again in another polishing machine 402 installed below, and then moved downward again, and the polishing operation is repeated, and the polishing particles are smooth after passing through all the polishing machines 402. To be polished.

The abrasive particles thus polished are transferred to the next process through the chute 409 installed under the lowermost polisher 402.

According to the drop-type sand polishing apparatus of the present invention as described in detail above, the ground surfaces of the tire rollers which are in contact with each other vibrate to provide a polishing portion which rotates at different rotational speeds, and the sand passes through the ground surface of the polishing portion. As the particles rub against each other, they can be polished or removed from foreign matters stuck to the sand particles, so that the polishing performance is excellent. Thus, sand particles with natural particles can be obtained as well as sand particles with even particle distribution. There is a distinctive effect.

Claims (6)

Sand storage unit 401 is formed in a shape wider than the lower end so that the sand can be stored downward and the sand and the drop hole 401a is formed at the bottom; The roller housing 418 is installed below the sand storage unit 401, and the two roller housings 418 are installed in parallel in the horizontal direction so that the abrasive particles falling from the sand storage unit are abraded while hitting each other or the ground plane. A polishing unit 402 in which the pair of tire rollers 402a abut on each other in the roller housing 418; A driving unit 403 connected to the roller housing 418 of the polishing unit 402 by a belt or a chain to transmit rotational force; Falling sand polishing device, characterized in that provided; the support portion 408 of the shape divided into multiple layers to support the roller housing 418 and the driving unit 403 of the sand storage unit 40 and the polishing unit 402 . The camshaft of claim 1, wherein the roller housing 418 of the polishing unit 402 has a camshaft having at least one cam 415 on a concentric axis therein so as to generate vibration while the tire roller 402a is rotated. 414) is a drop-type sand polishing device characterized in that the installation. The method of claim 1 or 2, wherein the tire roller 402a of the polishing unit 402 is installed in multiple stages while maintaining a constant interval in the vertical direction, the internal sand is characterized in that the dropping pressure is provided at low pressure Device. The sand of claim 1 or 2, wherein the polishing part 402 is connected so that the pair of tire rollers 402a contacted with each other are rotated to have a slight difference in rotational speed while all rotate in the same direction. Polishing device. The method of claim 1, wherein the polishing unit 402 is a falling sand polishing apparatus, characterized in that the pair of tire rollers (402a) in contact with each other are connected to rotate in different directions. The sand sanding device according to claim 1, wherein the sand storage unit (401) is provided with a spraying machine (425) so that the abrasive particles stored therein fall with the water to the polishing unit (402).