JP2001017920A - Rotary sieve - Google Patents

Abstract

PROBLEM TO BE SOLVED: To screen and remove a narrower and smaller fragment fraction from raw material used paper consisting of various fragments by using a rotary sieve having plural rotary shafts each provided with plural disks and stay elements which extend along the outer surface of the rotary shaft in its longitudinal direction and by which recessed or projecting parts are formed. SOLUTION: In this rotary sieve, each of plural rotary shafts 12, preferably having a square cross section, is placed between two holding disks 14 for holding the rotary shaft 12 on its both side and extends parallel to the holding disks 14, and plural stays (elements) 8 are placed on the extending edges 15 of each of the rotary shafts 12, respectively, so as to orient the narrower face outward. By the stays 8, recessed parts 16 are formed as cells so as to extend along the outer surface of each of the rotary shafts 12, in its longitudinal direction and also projecting parts are formed each between adjacent two of the recessed parts 16. Further, fixation elements 18 are disposed on disks 7 fitted to each of the rotary shafts 12, respectively, so as to place the disks 7 at prescribed distances from each other and to enable adjustment and fixation of the positions of the disks 7 in the shaft line direction with respect to the rotary shaft 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary sheave, and more particularly to a disk-type sheave or a disk-type separator, provided with a plurality of drive shafts which are arranged in parallel with a support frame, The present invention relates to a type in which a plurality of discs are alternately arranged on these rotation shafts so as to enter gaps between them. Further, the present invention relates to a rotary sheave, which is provided in parallel with a support frame and provided with a drivable rotary shaft.

[0002]

BACKGROUND OF THE INVENTION Such rotary sheaves, which can be configured as disk sheaves or disk separators,
It is known in a wide variety of forms and is particularly suitable for separating difficult-to-sieve materials. This rotary sheave is
Compared to other sieves, it has better sieving characteristics and higher throughput for its structural volume. However, this rotary sheave for separating waste paper material does not work well when the waste paper material contains newsprint, cardboard, boxes, and other undesirable materials. This is especially noticeable when small parts need to be sieved from waste paper. Furthermore, known rotary sheaves tend to wind around thread-like materials present in the waste paper material, for example knots, plastic strings and the like.

[0003]

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a rotary type, in which small parts can be sieved from waste paper raw material consisting of different pieces, without having to remove the small parts in a time-consuming and manual manner. To provide sheaves.

[0004]

According to the structure of the present invention for solving this problem, a plurality of drivable rotating shafts are provided in parallel with the support frame, and a plurality of rotating shafts are provided on these rotating shafts. At least one element in which the discs are arranged alternately so as to penetrate the gaps between each other, the axis of rotation extending longitudinally along its outer surface to form a recess or ridge have.

[0005] In another configuration of the present invention, in a type in which a driving shaft is provided in parallel with a support frame and the driving shaft is provided, the rotation shaft extends along the outer surface thereof.
It has at least one element extending longitudinally to form a recess or ridge, the element being arranged to extend helically with respect to the axis of rotation.

[0006]

When constructed in accordance with the invention, the recesses between the ridges form cells which allow small parts to be easily and simply made from relatively large pieces of, for example, newspaper. Can be screened well.

In an embodiment of the invention, a plurality of stays are arranged along the outer surface of the axis of rotation, each extending preferably at least approximately parallel to the axis of the axis of rotation. Since these stays protrude beyond the outer surface of the rotating shaft, recesses are formed. Further, these stays allow the small portion to be properly dropped from the sheave surface. Moreover, the sheave constructed as described above can be easily cleaned. The material wrapped around the rotating shaft is
It can be cut very simply and quickly by means of a cutter or another cutting means. This is because the cutter can be inserted into the hollow space, so that the wrapped material can be cut outward from the axis of rotation. Furthermore, it has been proven on the ground that sheaves constructed in this way are not, in principle, prone to winding up so quickly.

In a preferred embodiment, the axis of rotation has a square, preferably square, cross section, and in the region of the edge of the axis of rotation, the narrow face of the stay is arranged outward. . Such an arrangement is very advantageous both for the sieving action and for the anti-winding properties. Due to the cells formed by the stays, small parts such as cigarette boxes can be very easily and well sorted from newspaper fragments. Furthermore, there is little risk of wrapping occurring. At the same time, the wrapped material can be easily removed from the rotating shaft, since the hollow space facilitates the cutting. The small portion can be satisfactorily sorted based on the edge formed by the stay. This is because the small part can be easily dropped from the sheave on the basis of the edge and can be sorted well.

In order to be able to arrange the disk on the rotary shaft in a simple manner, the disk has a cutout corresponding to the cross section of the rotary shaft and the stay. By means of the fixing elements arranged on the stay, the disks can be adjusted and fixed on the axis of rotation axially at various distances from one another. The sieving characteristics of the rotary sheave can therefore be adapted in a simple manner to the material to be sieved.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described in detail with reference to the illustrated embodiments.

The sorting device 1 has various sorting sections. First, the material is supplied to the supply area 2 and is equalized in the equalizing section (Entzerrungsstrecke) 3.
The material is supplied to the various sorting sections in a uniform manner. First, in the first sorting area 4, small parts such as magazines, newspapers, small boxes, pieces of paper, and dust are sieved and separated from large parts such as cardboard and transport boxes. The material then reaches a rotating sheave (Rotorschieb) 5. This fine material is trimmed in the area 6 in front of the rotary sheave 5. Subsequently, the fine material is the disk 7 of the rotary sheave 5.
And a further area 9 with a stay 8 where small parts such as cigarette boxes are sieved, whereas old newspapers and relatively large parts are the rotating discs of the rotary sheave 5. Glided over 7. The material that has passed without being sieved thereafter reaches the manual section 10.

Rotary sheaves 5 provided for sieving small parts and configured as disc-type sheaves (Scheibensieb) or disc-type separators (Scheibenseparator) are arranged parallel to one another and are driven by an electric motor 11 via a chain drive. It has a drivable rotating shaft 12. The cross section of the rotating shaft 12 is square, and preferably consists of a square cross-section tube. In the area of the support frame 13, another area 9 of the rotary sheave 5
Each of the rotating shafts 12 provided on the side has two side holding discs 14
Is arranged. A plurality of stays 8 arranged at an extension of each edge 15 of the rotating shaft 12 are fixed between these holding disks 14, and the narrow surfaces of these stays 8 face outward. . The stay 8 forms a recess 16 extending longitudinally along the outer surface of the rotating shaft 12 and configured as a cell, whereas the stay 8 forms a ridge. Recess 16 formed by stay 8
Is formed in a convex shape.

The disk 7 has a notch 17 corresponding to the cross section of the rotating shaft 12 and the stay 8, so that the disk 7 can be fitted on the rotating shaft 12. A fixing element 18 is assigned to each disk 7, by means of which the disks 7 can be adjusted and fixed to the rotary shaft 12 in the axial direction at a certain distance from one another. FIG.
As shown in (1), the discs 7 are alternately arranged so as to enter each other.

The mode of operation of the rotary sheave 5 configured as a disk-type sheave or disk-type separator is as follows.

The waste paper mixed material is supplied to the supply area 2 and reaches the rotary sheave 5 via the supply belt, the equalizing belt 3 and the sorting area 4. In the first part 6 of the rotary sheave 5, relatively large parts, such as newspapers, cardboard pieces, etc., are trimmed. The second of the rotary sheave 5 having a stay 8 and a disk 7 arranged on the rotation shaft 12.
In part 9, the small box and the small part are separated from the newspaper. Very good sorting is obtained by the stay 8 and the cell 16. It has been found that the boxes and small parts are easily dropped from the sheave surface 19 via the outer edges of the stay 8 and are easily conveyed downward by the cells 16. Thus, the fines can be sieved from the newsprint in an advantageous manner and a high separation accuracy (Trennschaerfe) is obtained.

As shown in FIG. 8, when a knot, tape, string, or the like is wound around the stay 8 and the rotating shaft 12,
These can be cut very easily. Rotary axis 1
The material 20 wound around 2 is held by the stay 8 at a distance from the rotating shaft surface 21. Rotary shaft surface 2
In the hollow space 22 created between 1 and the wrapped material 20, the material 20 wrapped around the rotary shaft 12 can be cut very easily, since the cutter can move very easily.

The rotary sheave 23 shown in FIGS.
Is different from the rotary sheave 5 shown in FIGS. 2 to 8 in that no disk is arranged on the rotary shaft 24. Since the stay 25 is spirally arranged on the rotating shaft 24, a recess 26 configured as a cell is created. The function form is shown in Fig. 2
This corresponds to the rotary sheave shown in FIG.

[Brief description of the drawings]

FIG. 1 is a side view principle diagram showing a sorting device incorporating a rotary sheave according to the present invention in a sorting section.

FIG. 2 is a plan view showing a rotary sheave according to the present invention.

FIG. 3 is a side view showing a rotary sheave according to the present invention.

FIG. 4 is a view of the rotary shaft of the rotary sheave, taken along the line IV- in FIG.
FIG. 4 is a schematic view taken along line IV.

FIG. 5 is a sectional view showing a rotation shaft of the rotary sheave.

FIG. 6 is a view of the rotary shaft of the rotary sheave, taken along the line VI- in FIG.
FIG. 6 is a cross-sectional view along the line VI.

FIG. 7 is a sectional view of the disk provided on the rotating shaft, taken along line VII-V of FIG.
It is the schematic which shows the arrangement along line II.

FIG. 8 is a schematic view showing a rotation axis of a rotary sheave provided with a material wound around a stay.

FIG. 9 is a plan view showing another embodiment of the rotary sheave according to the present invention.

FIG. 10 is an enlarged view showing a rotation axis of the rotary sheave shown in FIG. 9;

11 is a cross-sectional view of the rotation shaft shown in FIG. 10 taken along line XI-XI.

[Explanation of symbols]

1 sorter, 2 supply area, 3 equalization section,
4 sorting areas, 5 rotary sheaves, 6 areas,
7 disk, 8 stays, 9 areas, 10 manual work sections, 11 electric motors, 12 rotating shafts, 13
Support frame, 14 holding disk, 15 edge, 1
6 recess, 17 notch, 18 fixing element,
19 sheave surface, 20 material, 21 rotating shaft surface, 22 hollow space, 23 rotary sheave, 2
4 rotating shaft, 25 stays, 26 recess

Claims (11)

[Claims] 1. A rotary sheave comprising a plurality of drive shafts arranged in parallel to a support frame and driven, and a plurality of discs are respectively inserted into these rotation shafts so as to enter gaps between them. At least one element whose axis of rotation (12, 24) extends longitudinally along its outer surface to form a recess (16, 26) or a ridge. A rotary sheave having (8, 25). 2. A rotary sheave according to claim 1, wherein a plurality of stays (8) extending at least substantially parallel to the axis of rotation are arranged along the outer surface of the axis of rotation (12). 3. A plurality of recesses (16, 2) extending at least approximately parallel to the axis of rotation of the rotation axis (12).
The rotary sheave according to claim 1 or 2, wherein the rotary sheave has (6). 4. The rotating shaft (12, 24) has a circular cross-section and at least two stays (8, 25) are arranged on the rotating shaft (12, 24). The rotary sheave according to any one of claims 1 to 3. 5. The rotating shaft (12) has a square, preferably square, cross section and the edge (1) of the rotating shaft (12)
The stay (8) is arranged in the area of (5).
A rotary sheave according to any one of claims 1 to 4. 6. A holding member (14) is arranged on a rotating shaft (12) in each lateral region of the support frame (13), and a stay (8) is provided between these holding members (14). A rotary sheave according to any one of the preceding claims, being fixed. 7. The disk according to claim 1, wherein the disk has a notch corresponding to the cross section of the stay and the axis of rotation. The described rotary sheave. 8. A fixing element (18) is arranged correspondingly to the disc (7), by means of which the disc (7) is arranged so as to be fixable in the axial direction to the rotary shaft (12). The rotary sheave according to any one of claims 1 to 7, wherein the rotary sheave is provided. 9. The disk (7) comprises a fixed element (18).
9. The rotary sheave according to claim 1, wherein the rotary sheave is adjustable and fixed to the rotation axis at various distances from one another. 10. The rotary sheave according to claim 1, wherein the stay (8) extends helically with respect to the axis of rotation. 11. A rotary sheave having a plurality of drive shafts arranged parallel to a support frame and having a plurality of drivable shafts, wherein the shafts (24) extend longitudinally along their outer surfaces. And at least one element (25) extending in the direction of the axis to form a recess or ridge, said element (25) being arranged to extend helically with respect to the axis of rotation. Features a rotating sheave.