JP2000051718A - Multi-axis spiral crusher capable of effectively producing granular, round and crushed sand of high quality for concrete - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate the gathering of sea sand by producing granular, round, and crushed sand of high quality which can by completely an alternate material for the sea sand that is a fine aggregate for concrete which is remarkably exhausted in recent years and by entirely using it as the fine aggregate for concrete. SOLUTION: In this multi-axis spiral crusher, by rotating a cylinder 2 made of steel fitted with projections 3 and crushed stone scrap feeding iron plates 4 spirally arranged and a cylinder made of steel fitted with dents 6 and crushed stone scrap feeding iron plates 4 spirally arranged in the opposite direction to each other, while moving crushed stone scraps by the feeding plates from a crushed stone scrap feeding port 8 toward a product discharge port 8, the dents and projections are engaged with each other, and thereby, atter the large crushed stone scraps are crushed, their edges are shaved to wear them and to effectively produce the granular, round, crushed sand of high quality.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[Technical field to which the present invention pertains] Processing waste materials and crushed stones from crushed stone mills to efficiently produce granular round crushed sand, replacing sea sand used as conventional fine aggregate for concrete, It is used as a fine aggregate for concrete.

[0002]

2. Description of the Related Art Crushed sand that has been conventionally used as fine aggregate for concrete has been used as it is by collecting crushed stones generated during the crushed stone manufacturing process of a crushed stone factory. It was inferior as fine aggregate for use. For this reason, it is not possible to use the whole sand as fine aggregate for concrete solely by crushed sand, and the conventional technique uses a mixture with sea sand. In some cases, round crushed sand is produced using a crushed sand sizing machine, but its productivity is extremely poor, and it has been possible to produce crushed sand that can be used as a substitute for sea sand. There is no present.

[0003]

SUMMARY OF THE INVENTION According to the present invention, high quality crushed sand for concrete with round shape is efficiently produced using crushed stones from a crushed stone factory. This makes it unnecessary to dispose of the crushed stone waste by reusing the crushed stone waste conventionally discarded by the crushed stone factory as crushed sand for concrete.

[0004] In addition, the high quality crushed sand for concrete manufactured by the present invention is entirely used as fine aggregate for concrete instead of sea sand which has been conventionally used as fine aggregate for concrete. You do not have to collect sand.

[0005]

Means for Solving the Problems By grinding crushed stones between the protrusions and the dents attached to the surfaces of the separate steel cylinders, large crushed stones are crushed and their corners are sharpened. Manufactures high quality crushed sand for round concrete.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION A projection is attached to the surface of a steel cylinder in a clockwise spiral shape, and the surface of another steel cylinder is engaged with the projection in a counterclockwise spiral shape. Make a dent. A spiral iron plate for feeding crushed stones is attached between the projections and the spiral arrangement of the dents. By rotating these two steel cylinders in opposite directions, the large crushed stones are crushed after the large crushed stones are crushed by engaging the protrusions and dents while feeding the crushed stones along the cylinder axis. To produce high quality crushed sand with round shape.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the steel box shown in FIG. 1, a protrusion is attached to the surface of a steel cylinder in a clockwise spiral shape. A spiral-shaped counterclockwise spiral, with an iron plate for feeding crushed stone in the middle of the spiral arrangement of the projections and another steel cylinder that engages with the projections on the surface Make a dent. When these two cylinders are rotated in the direction of the side view of FIG. 1, the crushed stones become rice-milled by the engagement of the protrusions and the dents, and the corners of large crushed stones are cut after being crushed. , The grain shape becomes round. The crushed stone input from the crushed stone input port by the rotation of the crushed stone feeding iron plate moves in the direction of the product discharge port while undergoing the rice polishing described above,
Finally, high quality crushed sand with a round shape is produced.

[0008]

According to the present invention, the actual rate of crushed stone from the crushed stone factory is J
IS A 5005-1993 Crushed stone for concrete and crushed sand 5.8 The value was 51% as measured by the method of determining the actual product ratio. Using this crushed stone waste as a raw material, the actual rate of crushed stone processed and manufactured according to the present invention is 57%.
%. This value was close to the actual rate of sea sand of 58%.

The slump of concrete kneaded using crushed stone as fine aggregate was 9 cm, but the workability of the concrete was extremely poor, and it could not be constructed at a concrete casting site. When concrete was kneaded using the crushed sand produced according to the present invention, the slump of the concrete was 13 cm. This value is a slump of concrete kneaded with sea sand.
cm.

[Brief description of the drawings]

FIG.

[Description of Signs] Steel Box Steel Cylinder Projection Crushed Stone Feeding Iron Plate Steel Cylinder Dent Crushed Stone Crushed Stone Inlet Product Outlet

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[Procedure amendment]

[Submission date] November 11, 1998 (1998.11.
11)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Brief description of drawings

[Correction method] Change

[Correction contents]

[Brief description of the drawings]

FIG. 1 is a plan view of a two-axis spiral crusher as an example of a multi-axis spiral crusher as viewed from above. On the left steel cylinder in the figure,
It has a projection and a crushed stone feed iron plate. The steel cylinder on the right in the figure has a crushed stone feeder iron plate and a dent. By rotating these two steel cylinders in opposite directions, the crushed stone is moved from the crushed stone input port to the product discharge port by the crushed stone feed iron plate, and the corners of the crushed stone are engaged with the projections and the dents. Is removed and the crushed stones are rounded.

[Description of Signs] Steel Box Steel Cylinder Projection Crushed Stone Feeding Iron Plate Steel Cylinder Dent Crushed Stone Crushed Stone Inlet Product Outlet

FIG. 2 is a side view of the biaxial spiral crusher as viewed from the axial direction of a steel cylinder. The steel cylinder on the left in the figure has a projection and a crushed stone feeder iron plate. On the steel column on the right side of the figure,
Includes dents and crushed stone feeder. By rotating the steel cylinder and the steel cylinder clockwise and counterclockwise, the crushed stones become rice-like between the protrusions and the dents, and the corners are worn away and the grain is rounded.

[Description of Signs] Steel Box Steel Cylinder Projection Crushed Stone Feeding Iron Plate Steel Cylinder Dent Crushed Stone Crushed Stone Inlet Product Outlet

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) B09B 3/00 301E

Claims (3)

[Claims] 1. A projection is attached to a surface of a steel cylinder in a clockwise spiral shape at equal intervals. A dent is made on the surface of another steel cylinder in a counterclockwise spiral, engaging with the aforementioned protrusion. 2. A spiral iron plate for feeding crushed stone debris is attached between the spiral arrangement of the projections on the surface of the steel cylinder. Spiral iron plates for feeding crushed stones are also attached to the surface of the cylinder with dents, in the middle of the spiral arrangement of dents. 3. Crushed stones are entrapped between the dents and the protrusions by rotating the cylinders with the protrusions counterclockwise and the cylinders with the dents clockwise, and large crushed stones are crushed. After that, the corners are sharpened to efficiently produce round, high-quality concrete-crushed sand for concrete.