JPH0335382Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention removes sharp edges by polishing crushed rock, gravel, river gravel, sandstone, slag (slag), etc. cut from the mountain, and removes the sharp edges. This invention relates to a crushing and polishing device for removing muddy soil and obtaining high quality sand and gravel.

[Conventional technology]

As a prior art, for example, the one described in Japanese Patent Publication No. 47-3420 is known. This includes a constant speed rotating drum having opposite end walls and arranged horizontally, a material feeding device for feeding material into one end of the drum in a substantially axial direction, and a material being pulverized from the drum. and a member having an outer circumferential surface portion formed of a durable elastic material and rotated about an axis substantially coaxial with the rotational axis of the drum, a rotary impulse member which is rotated in an encircling manner; A crusher comprising a material lifting device that raises the material toward the upper peripheral edge of the drum and then drops the lifted material onto the impulse member by gravity, the mill comprising: a rotating drum; a rotating impulse member; are in a nearly concentric relationship,
Furthermore, both rotate in the same direction.

As another conventional example, a stone crushing and polishing device described in Japanese Patent Application Laid-Open No. 0586753 is known. This device is used to remove soil clods and corners of crushed stones that are attached to crushed stones by polishing the crushed stones and other crushed stones. A rotor with impact blades is arranged to rotate in the opposite direction to the rotating drum, and the center axis of the rotor with impact blades is arranged coaxially with the center axis of the rotating drum. The crushed stone to be polished is then scraped up by the impact blades of the rotor,
The crushed stones collide with the upper inner wall of the drum rotating in the opposite direction to the rotor, and the contact friction between the crushed stones flying inside the drum removes the corners of the crushed stones or the clods attached to the crushed stones. It is said that

[Problem to be solved]

The method described in Japanese Patent Publication No. 47-3420 is good for crushing materials into small particles, but when the material is hard crushed stone for concrete, it is necessary to remove the corners of the crushed stone with a rotating impulse member such as a rubber tire. This was completely impossible, and it was impossible to obtain sand or gravel with sharp edges.

Furthermore, what is described in JP-A No. 50-86753 is
Since the crushed stones are flown in a rotating drum, there is a risk that they will collide with the upper inner wall of the drum or collide violently with each other, causing the crushed stones themselves to be crushed and split before corners and clods are removed. The stones had broken edges, and it took a great deal of time to remove the broken edges.

Therefore, the object of this invention is to provide a crushing and polishing device that can effectively remove corners and clods of soil, and that can be designed compactly without increasing the size of the entire device.

[Means for solving problems]

In order to achieve the above object, the present invention provides at least two upper and lower parts that can be detachably attached to a substantially hollow cylindrical drum.
The receiving plate of the stage is installed in the vertical direction, and the receiving plate is composed of a large number of rods arranged radially in the radial direction, with gaps formed between each rod, and the entire plate is shaped like a donut. A rotating rotor that rotates independently is provided at the center of the drum and the receiving plate, and two or more rotating blades are attached to each stage of the rotating rotor to work together with the receiving plate to crush and polish materials such as crushed sand, crushed stones, gravel, etc. , a collection chute is provided on the lower surface of the upper receiving plate to guide the material to the center of the next stage, and a rotating blade that rotates the material supplied from above the drum by the rotation of the rotor and a receiving plate located below the rotating blade. It was designed to mainly perform crushing and polishing.

[Effect]

When a material such as crushed sand is introduced from above the drum and the rotating rotor is rotated to rotate the rotating blades, the crushed sand remaining on the receiving plate is mainly crushed and polished by the rotating blades and the rods that make up the receiving plate.
The crushed sand is rounded and falls as high-quality sand through the gaps between the receiving plates, and is collected by the collection chute to the center of the next stage where it is crushed and polished again between the rotary blades and the receiving plate. In addition, the crushed sand on the receiving plate is sandwiched between the rotating blades and is sheared and compressed, and the rotation of the rotating blades causes it to flow on the receiving plate, and the materials are crushed by colliding with each other, resulting in predetermined grain size. Items crushed and polished to smaller diameters fall through the gaps in the receiving plate, and items that are small enough to not fall are sheared and compressed by the next rotating blade, and the materials also collide with each other.
The particles are successively crushed and polished to a predetermined particle size or less.
In particular, when the material flows over the receiving plate, strong shearing force and compressive force are applied by the rotating blades to the material caught in the gap, making it possible to form a material with rounded corners.

(Example) A preferred example of this invention will be described below with reference to the drawings.

In FIG. 1, receiving plates 2 are removably attached to a drum 1 having a substantially hollow cylindrical shape in a plurality of stages in the vertical direction. In the illustrated embodiment, the receiving plates 2 are provided in two stages. A rotating rotor 3 that rotates independently is provided at the center of the drum 1 and the receiving plate 2, and the rotating rotor 3 and the rotating rotor 3 are equipped with rotating blades that work together with the receiving plate 2 to crush and polish materials such as crushed sand and crushed stones. 4 are attached in a removable manner. A hopper 5 is attached to the upper end of the drum 1, and material is fed through the hopper 5. In addition, the drum 1 has a main body casing 6
It is installed on. This main body casing 6 is
Supported by The rotating rotor 3 is attached to a rotating shaft 8, and a driven wheel 9 is fixed to the base end of the rotating shaft 8. This driven wheel 9 includes a driving wheel 11 fixed to the output shaft of a motor 10 and a belt 1.
It is frozen at 2. By operating the motor 10 and rotating the driving wheel 11, the driven wheel 9 is rotated, and the rotation of the driven wheel 9 rotates the rotating shaft 8, and the rotation of the rotating shaft 8 causes the rotary rotor 3 to rotate. Furthermore, when the rotating rotor 3 rotates, the rotating blades 4 attached thereto also rotate together. A collection chute 13 is provided on the lower surface of the upper receiving plate 2 to guide the material to the center of the next stage. The attachment of the rotating blade 4 to the rotating rotor 3 is performed by attaching the rotating blade 4 to the rotating rotor 3.
A rotor 14 is fixed to the rotor 14, and one or more rotating blades 4 are attached to the rotor 14. The upper receiving plate 2 is attached to a support stand 15, and this support stand 15 is connected to the inner peripheral surface of the drum 1 and a bearing 16 provided on the rotating rotor 3.
The rotor 3 is attached to the rotor 3 and is configured to remain immovable even when the rotating rotor 3 rotates. The lower receiving plate 2 is also a similar support base 1
5, and this support stand 15 is attached to the inner peripheral surface of the drum 1. The receiving plate 2 is composed of a main body part 2A which is inclined so as to gradually become higher toward the outside, and a vertical pillar part 2B which is made to stand upwardly at the outer tip of the main body part 2A. The tip of the rotary blade 4 also rises up so as to follow the shape of the receiving plate 2 configured in this way, forming a standing wall 4A. A prevention plate 17 is provided below the upper support stand 15 to prevent the material from scattering. Further, a bottom plate 18 is provided on the lower surface of the inside of the drum 1, and a discharge chute 19 is formed following this bottom plate 18. Furthermore, the hopper 5 is formed on an upper lid 20 that covers the upper end opening of the drum 1, and a prevention plate 17 for preventing material scattering, similar to the one described above, is provided on the lower surface of the upper lid 20.

As shown in FIG. 2, the receiving plate 2 has a large number of bar members arranged radially in the radial direction and a gap 2C formed between each bar member, and has a donut shape as a whole. The part of the bar that is inclined so that it gradually becomes higher toward the outside is the main body part 2A, and the part that stands up by bending the outer tip of this main part 2A becomes the column part 2B. .

In the embodiment described above, the tip of the rotating blade 4 is made to stand up to form the standing wall 4A, and the tip of the bar that constitutes the receiving plate 2 is also made to stand up to form the standing column part 2B, but these do not necessarily need to be formed. .

〔effect〕

As explained above, according to the present invention, multiple stages of receiving plates are removably attached to the drum in the vertical direction, and the receiving plate includes a large number of rods arranged radially in the radial direction and each of the rods. The entire drum is formed into a donut shape with a gap formed in between, and a rotating rotor that rotates independently is provided at the center of the drum and the receiving plate.
Two rotating blades are installed on each stage of the rotor to crush and polish materials such as crushed sand, crushed stones, and gravel in cooperation with the receiving plate.
With the above installation, a collection chute is provided on the lower surface of the upper receiving plate to guide the material to the center of the next stage, and the material supplied from above the drum is connected to a rotating blade that is rotated by the rotation of the rotor and located below this rotating blade. Since crushing and polishing is mainly performed with the receiving plate, corners and clods can be effectively removed, and the entire device can be designed compactly without increasing its size. In particular, material that has moved outward in the upper stage is collected and guided to the center of the next stage by a chute, so that it can be efficiently crushed and polished in the next stage as well. In addition, two or more rotating blades are attached to the rotating rotor at a predetermined interval above each receiving plate, so the material is sandwiched between the receiving plate and the rotating blades, and the rotating blades rotate. Shearing and compressive forces act on the material and it is rubbed and polished, and those that are crushed and polished to a size smaller than the gap fall, and those that are larger than the gap fall.
It is sequentially crushed and polished by the next rotating blade. This idea does not scatter the material inside the drum and crush it by hitting the inner wall of the drum, but instead applies shearing and compressive forces to the material between the receiving plate and the rotating blades.
Moreover, since there are two or more rotating blades, neither shearing force nor compressive force acts on the material on the receiving plate between the rotating blades. In other words, this idea does not apply force to the material all the time, but instead applies shearing and compressive forces to the material intermittently, such as pulling out when force is applied and applying force when it is removed. It has good fluidity, allows for longer crushing due to materials colliding with each other, and reduces wear and tear on the rotating blades and rods.
Furthermore, if the material in the gap and the material on the bar have the same particle size, the shearing force and compressive force they receive will be different, and the material on the bar and on the gap will be different for the material flowing on the receiving plate. By undergoing stepless changes in shearing force and compressive force during the process, it is possible to obtain high-quality gravel with rounded corners. Also, the material caught in the gap is better polished. In cases where the tip of the rotary blade rises to form a standing wall, and the tip of the bar that makes up the receiving plate also rises to form a standing column, the material that attempts to escape outward due to the rotation of the rotating blade also forms a standing wall and a standing column. Crushing and polishing can be performed between the two parts, further improving the crushing efficiency.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing a preferred embodiment of this invention, and FIG. 2 is a plan view of the receiving plate. 1... Drum, 2... Receiving plate, 2A... Main body,
2B...Standing column part, 2C...Gap, 3...Rotating rotor, 4...Rotating blade, 13...Collecting chute.

Claims (1)

[Claims for Utility Model Registration] 1. At least two upper and lower receiving plates are removably attached in the vertical direction within a substantially hollow cylindrical drum, and the receiving plates are made of a large number of rods arranged radially in the radial direction. The drum has a donut-shaped structure, with gaps formed between the rods, and a rotating rotor that rotates independently is provided at the center of the drum and the receiving plate. Two or more rotating blades are installed on each stage to crush and polish materials such as crushed sand, stone, gravel, etc., and a collection chute is installed on the underside of the upper receiving plate to guide the material to the center of the next stage, and the material is supplied from above the drum. A crushing and polishing device characterized in that a material is mainly crushed and polished using a rotary blade rotated by the rotation of a rotating rotor and a receiving plate located below the rotary blade. 2. The crushing and polishing device according to claim 1, wherein the tip of the rotary blade rises to form a standing wall, and the tip of the rod constituting the receiving plate also rises to form a standing column.