JPS588898B2 - sand machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a sand machine for producing sand mainly used in concrete work.

In general, it is difficult to make sand using an impact crusher from raw stones of about 5 to 13 mm, collected from rivers, etc., by a wet method, since it is difficult to do so by a dry method.

That is, the raw stone has a large surface area, so there is a lot of surface water, and since it is piled up, it is extremely difficult to dry.

It is extremely difficult to dryly crush such wet raw stone with a lot of surface water into pieces of 5 mm or less (sand for concrete) because the rostol becomes clogged.

For this reason, a wet method of sand making is currently used, in which sand is flushed with water through the gaps in the rostre.

In view of the current situation, it is an object of the present invention to provide a dry-type sand making machine that has excellent crushing efficiency and durability even for wet ore with a lot of surface water.

The structure of the present invention will be explained below according to the embodiments shown in the drawings.

In FIGS. 1 and 2, 1 is the rotating chamber 3 of the impeller 2.
The casing has a crushing chamber 4 for raw stones, an opening hole 5 for introducing raw stones in the center of the right side wall of the rotating chamber 3, and a sand outlet 6 at the bottom of the crushing chamber 4.

Reference numeral 7 denotes a rotating shaft supported horizontally by supporting members 8, 8, 9 a collar, and 10 an inner wall of the casing 1 so as to be located in the center of the rotation chamber 3 of the impeller 2 constituted by the casing 1. The cage is fixedly supported by the cage.

This cage 10 has a cylindrical shape with a hole 10' in one side wall and an opening 10" in the other side, and the cage 10 is fixed by communicating the opening surface 10" with the opening hole 5 of the casing 1 for introducing raw ore. Also, a raw stone outflow window 11 is formed at a predetermined position on the peripheral wall 10''.

In FIG. 1, the position of the window 11 is formed at the upper right corner of the cage 10, but the position can be adjusted as desired.

The end portion of the rotating shaft 7 is inserted into the rotating chamber 3 through the shaft hole 12, the collar 9 is exposed to the opening hole 10' of the cage 10, and the rotating body 13 is attached to the tip. is located inside the cage 10.

The rotating body 13 is ring-shaped with a concave portion with an open right side surface, and has notches 13' with open ends formed in the circumferential wall thereof at equidistant positions in the axial direction.

However, the rotating body 13 may be omitted. Further, a disk-shaped support plate 15 having a flange 14 is fitted onto the shaft 7 and fixed thereto.

By attaching the impeller 2 to the support plate 15, the impeller 2 is rotatably fitted around the outer periphery of the cage 10.

A substrate 16 is provided on the upper surface and front side of the crushing chamber 4 of the casing 1.
．． 17 is appropriately supported, and an upper repelling plate 18 and a front repelling plate 19 are attached to the inner surfaces of the substrates 16 and 17, respectively, so as to be replaceable and opposite to the impeller 2.

In addition, approximately % of the circumference other than the front upper half of the impeller 2,
An arc-shaped substrate 20 that matches the rotation locus of the impeller 2 is placed in parallel with the substrate 16 and fixedly supported on the casing 1 by appropriate means, and an arc-shaped peripheral surface repellent that matches the substrate 20 is formed on the inner surface of the substrate 20. The board 21 is installed in a replaceable manner.

As shown in FIG. 2, parallel protrusions 22 are formed on the surfaces of the circumferential repulsion plate 21 and the upper repulsion plate 18 at positions facing both ends of the impeller 2.
Prevent rough stones from entering the side walls of each.

Incidentally, an exhaust hole 23 is provided at a predetermined position on the upper surface of the casing 1 so that air containing moisture in the crushing chamber 4 can be discharged to the outside.

Next, the operation of the present invention will be explained.

First, when the rotating shaft 7 is rotated by an appropriate means, the impeller 2 rotates in the direction of the arrow shown in FIG. It is sent into the cage 10 through the chute 25.

The rough stones sent into the cage 1o are sequentially thrown into the rotating body 13. Since the rotating body 13 is rotating at high speed, the rough stones are likely to fly outward through the notch 13' due to the centrifugal force. However, this is restricted by the inner surface of the cage 10.

Then, each time the notch 13' and the window 11 of the cage 1o match, the raw stone is moved through the window by the centrifugal force of the rotating body 13, the pushing force of its peripheral wall, and the suction force caused by the high-speed rotation of the impeller 2. It is released and sucked out sequentially from 11 onwards.

The above is a case where the rotating body 13 is provided in the cage 10, but even if the rotating body 13 is not provided, the suction force by the impeller 2 can sufficiently pull out the raw stone in the cage 10 from the window 11.

The raw ore discharged from the window 11 is accelerated by the impeller 2, hits the peripheral repellent plate 21, is further guided by the peripheral repellent plate 21, and is discharged at high speed into the raw ore crushing chamber 4 in front by centrifugal force, and then the upper Repulsion plate 13 or front repulsion plate 19
There is also a collision between the stones, and the impact causes them to be crushed.

At this time, the radiation to the rough stone crushing chamber 4, the impact with the repelling plate, etc. serve to drain the rough stone, and the rough stone is crushed more efficiently.

Furthermore, since the repulsion plate is provided with the protrusions 22, it is possible to prevent the rough stone from falling between the side walls of the casing 1 and the impeller 2, respectively.

Furthermore, since the raw stone is crushed by the impact with the repulsion plate, the impeller, repulsion plate, etc. can withstand long-term use.

The raw stone crushed by the repulsion plate or the like is discharged from the sand-making outlet 6 to the outside of the sand-breaking chamber 4.

As explained above, the present invention has a cage having a cylindrical shape with one end open toward the raw ore input chute, and a cage with a raw ore outflow window provided at one location on the cylindrical peripheral wall, which is fixed so as to be rotatably adjustable. A rotating chamber with an impeller that rotates at high speed on the outer periphery of the casing is formed by shifting to one side of the casing, and the front upper half of the impeller is cut open and the peripheral surface closely surrounds approximately % of the circumference. A repulsion plate is fixed to the casing, and on the other side of the casing in front of the cut-out opening in the front upper half of the circumferential repulsion plate, there is provided a raw stone crushing chamber that is approximately shaped and has a sand outlet at the bottom. are arranged in series, and an upper surface repulsion plate is provided in the upper part of the rotation chamber and the upper part of the raw ore crushing chamber continuously from the peripheral surface repulsion plate,
In addition to fixing a front repulsion plate in front of the rough sand-breaking chamber,
This is a sand making machine that rotates an impeller in the direction in which the raw ore is radiated towards the raw ore crushing chamber in front of it.The ore that is supplied into the cage from the ore input chute is passed through the ore outflow window of the cage through the impeller that rotates at high speed. The suction force causes the appropriate amount to flow out, which is accelerated by the impeller and hits the peripheral repellent plate.Furthermore, the impeller rotates at high speed using the peripheral repulsive plate as a run-up path, and receives acceleration force and centrifugal force to form the peripheral repellent plate. It is strongly ejected from the cutout opening in the front upper half of the stone crushing chamber at high speed with tangential directionality, and without exception, it is violently slammed against the front and top repulsion plates of the rough stone crushing chamber. All rough stones are crushed into fine pieces.

Furthermore, by changing the position of the raw ore outlet window of the cage depending on the size of the input raw ore, the length of the run-up path can be adjusted optimally, and the crushing efficiency can be improved.

In particular, the circumferential repellent plate is installed close to the impeller so as to surround it, so it is possible to reliably apply strong acceleration and centrifugal force to the rough stones in the rotating chamber without exception. This ensures that the rough stone is crushed at the same time.

In addition, since the impeller rotation chamber and the ore crushing chamber are separated, the ore crushed in the ore crushing chamber is unlikely to bounce back and hit the impeller, making the impeller durable for long-term use and capable of crushing ore. The adhering water is separated from the rough stone by the suction force of the impeller, and further drained by collision with the repellent plate, making it possible to produce sand of good quality in a sufficiently dry process.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional front view of the sand making machine according to the present invention, and FIG.
The figure is a longitudinal side view. 1... Casing, 2... Impeller,
3...Rotating chamber, 4...Crushing chamber, 5...
...Opening hole, 6...Sand outlet, 10...
... Cage, 11 ... Raw stone outflow window.

Claims (1)

[Claims] 1. A cage with a cylindrical shape with one end open toward the raw ore input chute and a raw ore outflow window provided at one location on the cylindrical peripheral wall is fixed in a rotatably adjustable manner, and an impeller rotates at high speed on the outer periphery of this cage. A rotating chamber provided with a rotation chamber is formed by shifting to one side of the casing, and a circumferential repulsion plate is fixed to the casing, the front upper half of the impeller is cut open, and the circumferential repulsion plate closely surrounds approximately % of the circumference. A rough stone crushing chamber having a substantially "shaped" shape and having a sand outlet at the bottom is connected to the other side of the casing in front of the cutout opening in the front upper half of the circumferential repellent plate, and the rotating chamber A top surface repulsion plate is provided continuously from the circumferential surface repulsion plate on the upper part of the raw stone crushing chamber and the upper part of the raw stone crushing chamber, and a front surface repulsion plate is fixedly installed in front of the raw stone crushing chamber. A sand making machine characterized by being rotated in the direction of radiation toward the chamber.