JP2007083115A - Rotation sieve apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rotation sieve apparatus which is capable of rapidly and efficiently conducting the screening of a large amount of a raw material and yet of accurately conducting the screening into a several types of size. <P>SOLUTION: In the rotation sieve apparatus formed by two or more rods which supports the rotation drum 2 to the tool frame 1 wherein the body part of the rotation drum 2 interposes the screening space with almost parallel direction to the center line: the inner rod 3 and a main frame 11 which constitutes the scaffolds of the rotation drum 2 are fitted to the entrance side; an outer side rod 12 which constitutes the outermost periphery is fitted between a first and a second rod fitting members 8, 9 with a predetermined spacing from the main frame 11; and compulsive movable plates 13, 14 for moving both ends of the rods within the bearing apertures 15 through contact of both ends of the rods, which supports both ends of the rods so that they can be moved within the bearing apertures 15 by forming the bearing aperture 15 to a lengthy hole shape which is long to the diameter direction, are installed at the tool frame 1 along the arc at the lower position of the rotation drum 2. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a rotary sieving apparatus for sorting raw materials such as debris such as excavated soil and slabs into particle sizes suitable for each application.

As a conventional rotary sieving device, a drum body called a trommel, which is constituted by a sieving net, is known. Moreover, as a thing using a rod instead of a net, for example, as a thing suitable for sieving adhesive materials (viscous soil) in a residual soil treatment facility, a rotating drum is supported by tilting the machine frame, and the rotating drum Is formed by a rod with a sieving gap in a direction substantially parallel to the center line, and the rod has an outer diameter smaller than the inner diameter of the bearing hole of the rod, and the rod is supported in a movable state in the bearing hole. Is known (see Patent Document 1).
JP 2002-113422 A (2nd page, FIG. 1)

  In a conventional rotary sieving device using a rod, the sieving gap between the rods slightly varies with the rotation of the rotating drum, and the rod rotates and revolves, or the elastic vibration and the eccentric rotation region oscillate. The adhering material passes smoothly through the sieving gap and is less likely to clog the sieving gap, so that the residual soil treatment containing the adhering material can be screened smoothly. However, the inconvenience that it is difficult to fall out of the lighter ones without being sorted out, that is, through the sieving gap, has not been solved. Further, the difference between the outer diameter of the rod and the inner diameter of the bearing hole is not so large from the drawings and the description of the specification, and the inner diameter of the bearing hole is at most about 10 to 25% larger than the outer diameter of the rod. . Therefore, the movable range in the bearing hole of the rod is narrow, and it is still insufficient for sieving more quickly and accurately, regardless of the specific gravity difference. Further, only two types, one having a size that passes through the sieving gap of the rod and one having a size that cannot pass, can be selected.

  Therefore, the present invention is capable of accurately sieving even an adhesive material having a low specific gravity, and capable of quickly and efficiently sieving a large amount of material, and further capable of sieving in several sizes. An object is to provide a sieving device.

  In order to achieve the above-described object, the present invention is formed by a plurality of rods that rotatably support a rotating drum on a machine frame and that have a main body portion of the rotating drum interposed with a screening gap in a direction substantially parallel to the center line. In the rotary sieving apparatus, a first cylindrical portion, a second cylindrical portion, and a third cylindrical portion are sequentially provided at appropriate intervals from the raw material inlet side of the rotary drum, and each of the first to third cylindrical portions is provided. A rod mounting member having a first to third annular shape is fixed to the outer periphery, and a main frame that forms a skeleton of the inner rod and the rotating drum is mounted with a predetermined interval between the first and third rod mounting members, The outermost rod is formed between the first and second rod mounting members, the outer rod is mounted at a predetermined interval from the main frame, and the first and third rod mounting members to which both end sides of the inner rod are mounted are formed. Bearing hole in the radial direction The bearing holes formed in the first and second rod mounting members to which both end sides of the outer rod are mounted are supported in the radial direction. A long, long hole shape is formed to support both ends of the outer rod so that they can move within the bearing hole, and a forced movable plate for moving the inside of the bearing hole when both ends of the rod come into contact with the machine frame. It is provided along the arc at the lower position.

  According to the present invention, there are three types of sizes: a small lump falling from the outer rod, a middle lump falling from between the intermediate rod and the outer rod, and a large lump discharged from the third cylindrical portion of the rotating drum. Can be screened. In addition, since the inner rod and the outer rod are moved in the bearing hole by the forced movable plate, the raw material on the rod, together with the rotation of the rotating drum, falls from the screening gap even with a light specific gravity, Moreover, the screening of adhesive raw materials can be performed quickly and accurately. In addition, a large amount of raw materials can be processed quickly and efficiency is good.

  Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is an overall schematic view, in which a rotary drum 2 is rotatably supported on a machine frame 1, and a main body portion of the rotary drum 2 is formed by a plurality of inner rods 3. A screening gap t ₁ (see FIG. 2) is formed between the plurality of rods 3. Further, the first cylindrical portion 5, the second cylindrical portion 6, and the third cylindrical portion 7 are sequentially provided at regular intervals from the raw material inlet 4 side of the rotary drum 2 to the end thereof, and these first cylinders are sequentially provided. Or the 1st rod mounting member 8, the 2nd rod mounting member 9, and the 3rd rod mounting member 10 which made the annular | circular shape were adhere | attached on the outer periphery of each 3rd cylindrical parts 5-7. One end of the inner rod 3 is attached to the inner side of the first rod attachment member 8, and the other end is attached to the inner side of the third rod attachment member 10 through the second rod attachment member 9. A main frame 11 constituting the skeleton of the rotary drum 2 is attached between the first rod attachment member 8 and the third rod attachment member 10 with a predetermined distance from the inner rod 3. The main frame 11 also passes through the second rod attachment member 9. Further, the main frame 11 is arranged on the circumference so that 4 to 8 cylindrical objects are equidistant. Further, an outer rod 12 constituting the outermost periphery is attached between the first rod attachment member 8 and the second rod attachment member 9. A predetermined interval is also provided between the outer rod 12 and the main frame 11, and the gap between the outer rods 12 (screening gap t ₂ ) is smaller than the gap between the main frames 11. It is arranged on the circumference.

  In the illustrated embodiment, the innermost inner rod 3 and the outermost outer rod 12 are configured to be movable in the radial direction and to rotate. Forced movable plates 13 and 14 are brought into contact with both ends of the inner rod 3 and the outer rod 12, respectively. These forced movable plates 13 and 14 are attached to the machine frame 1 via attachment members 13 ′ and 14 ′, and are provided along an arc at a position below the rotary drum 2. As shown in FIG. 2, the forcible movable plate 13.14 is formed in the corrugated portion W so as to contact both ends of the rods 3 and 12, and both ends of the rods 3 and 12 rotate so as to trace the corrugated portion W. As the drum 2 rotates, it is forced to move one after another.

  In FIG. 2, long-hole-shaped bearing holes 15 that are long in the radial direction are respectively provided where the first to third rod mounting members 8 to 10 support both end sides of the inner rod 3 and the outer rod 12. Is formed. Both end sides of each rod 3, 12 move within the bearing hole 15. When the ends of the rods 3 and 12 are positioned by the rotation of the rotary drum 2 at the place where the forced movable plates 13 and 14 are installed, the rods 3 and 12 move up and down in the radial direction as shown in FIG. (Vibrates) and then rotates. It is preferable that the installation of the forced movable plates 13 and 14 is such that the corrugated portion W continues from a short time before the rotary drum 2 is directly below to a position where it rises about 1/3 from directly below. The forcible movable plates 13 and 14 preferably occupy 2/3 to 3/4 of the lower half arc of the rotary drum 2, and more preferably 3/4.

Any of the rods 3 and 12 described above may have a uniform thickness up to both ends, for example, a round bar having a diameter of 20 to 30 mm, or a portion inserted into the bearing hole 15 as shown in FIG. Only a round bar having a small diameter may be used, and a part for selecting a raw material may be formed in a cylindrical shape having a larger diameter than the round bar. Here, both ends are indicated by a symbol x, and the middle portion having a large diameter is indicated by a symbol y. The diameter of the intermediate portion y in FIG. 3 is selected from the range of 10 to 70 mm, and for example, as the inner rod 3, the intermediate portions y having a diameter of 20 mm and 50 mm are alternately arranged, or two in succession are 50 mm in diameter. One rod having a diameter of 20 mm can be arranged next to the rod. At this time, the evenly spaced gaps t ₁ sieving may be adjusted spacing of the bearing hole 15.

  In the rod shown in FIG. 4, the intermediate portion y has a quadrangular cylindrical shape, and may have a polygonal cylindrical shape other than the square. The rod shown in FIG. 3 and the rod of this polygonal cylinder can also be used in combination. This polygonal rod may be combined with a rod having a different thickness.

  As a rotating means of the rotating drum 2, a driven sprocket wheel (not shown) is provided on the outer peripheral surface of the first cylindrical portion 5, and a rotational force of a motor (not shown) provided on the machine frame 1 is used as a driving side sprocket ( (Not shown), a chain (not shown) is bridged between both sprockets, and the rotating drum 2 is rotated.

  The forced movable plates 13 and 14 may be formed of a plastic material having a strength such as nylon in addition to the case of being formed of a metal material. By forming the forced movable plates 13 and 14 from a plastic material, a noise prevention effect is produced.

In the case of sieving processing of residual soil containing adhesive materials using the rotary sieving apparatus configured as described above, raw materials such as residual soil are charged into the rotary drum 2 from the raw material charging port 4. The raw material charged into the rotary drum 2 moves from the first cylindrical portion 5 side to the second and third cylindrical portions 6 and 7 side of the rotary drum 2 and is smaller than the gap t ₁ during the movement. Falls in the direction of the small lump indicated by the arrow shown in FIG. In addition, the inner rod 3 rolls in the bearing hole 15 as the rotary drum 2 rotates, and reciprocates in the radial direction. It does not remain attached to the surface, and there is no possibility of passing the gap t ₁ smoothly and pinching the gap t ₁ . Further, it is the inner rod 3, by forced movable plate 13, in certain areas during rotation, by being forcibly caused to reciprocate, adherent material is to be dropped as well, lighter feedstock also smoothly from the gap t ₁ specific gravity Can do. The same is true for the outer rod 12.

FIG. The enlarged view of the part which provided the forced movable board. The perspective view which shows an example of a rod. The perspective view which shows the other example of a rod.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Machine frame 2 Rotating drum 3 Inner rod 4 Raw material inlet 5 1st cylindrical part 6 2nd cylindrical part 7 3rd cylindrical part 8-10 Rod attachment member 11 Main frame 12 Outer rod 13,14 Forced movable plate 15 Bearing hole

Claims (5)

In the rotary sieving device formed by a plurality of rods, in which the rotary drum is rotatably supported on the machine frame, and the main body portion of the rotary drum is provided with a sieving gap substantially parallel to the center line,
A first cylindrical part, a second cylindrical part, and a third cylindrical part are sequentially provided at appropriate intervals from the raw material inlet side of the rotating drum,
A rod mounting member having a first to third annular shape is fixed to the outer periphery of each of the first to third cylindrical portions,
Attach the main frame that forms the skeleton of the inner rod and the rotating drum with a predetermined interval between the first and third rod mounting members,
The outermost circumference is configured between the first and second rod mounting members and the outer rod is mounted at a predetermined interval from the main frame,
A bearing hole formed in the first and third rod mounting members to which both end sides of the inner rod are attached is formed in a long hole shape that is long in the radial direction, and both ends of the inner rod are supported so as to be movable in the bearing hole,
Bearing holes formed in the first and second rod mounting members to which both end sides of the outer rod are attached are formed in a long hole shape that is long in the radial direction, and both end sides of the outer rod are supported so as to be movable in the bearing holes. ,
A rotary sieving apparatus, wherein a forcible movable plate is provided along a circular arc at a lower position of the rotary drum so that both ends of the rod come into contact with the machine frame and move in the bearing hole.   A portion where at least one of the inner rod and the outer rod is supported by a bearing hole is a round bar, and a portion acting on the raw material is formed in a cylindrical shape or a polygonal cylindrical shape having a diameter larger than that of the round rod. The rotary sieving device according to claim 1.   The rotary sieving apparatus according to claim 1 or 2, wherein either one or both of the inner rod and the outer rod is configured by combining those having different diameters of the portion acting on the raw material.   The side of the forced movable plate that contacts the rod is formed in a corrugated portion, and the rod moves along the corrugated portion, thereby forcibly moving in the bearing hole. The rotary sieving device according to any one of the above.   The rotary sieve device according to any one of claims 1 to 4, wherein the forcible movable plate is provided so as to occupy three-quarters of the arc of the lower half of the rotary drum.

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