JPH06343928A - Vibration sieve - Google Patents

Abstract

PURPOSE:To screen sand and glass pieces contained in shredder dust selectively. CONSTITUTION:A belt conveyor 5 is supported on a machine table 1 through a spring, and an endless belt 7 of the belt conveyor 5 is formed using a wire net. Further, a table 15 is fixed on the frame 9 of the conveyor 5, and a vibration starter 17 is installed on the table. The vibration starter 17 is so designed as to obtain a vibration starting force by rotating an eccentric weight using a built-in motor. The top of a belt 7 is supported by a train of rollers 19 aligned at a specified interval. These rollers are driven to rotate by an unillustrated motor. In addition, a cam 21 is installed to each of these rollers 19 so that the belt is thrusted up from below and subsequently rocks. A chute receptacle 23 which receives dust falling from the mesh of an upper belt is inserted obliquely between the upper and lower conveyer belts.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vibrating sieve for removing incombustibles from shredder dust.

[0002]

2. Description of the Related Art Shredder dust obtained by crushing automobile seats into small pieces is incinerated after removing metal pieces using magnetic force or the like. However, if incombustibles (earth, sand, glass, iron powder) are included, the disposal of ash is troublesome. Therefore, a small piece of dust is removed by a vibrating screen before incineration.

In the conventional vibrating screen, the screen itself is vibrated finely, and the dust on the screen is advanced while being screened. However, if foreign substances such as wires or springs get stuck in the mesh of the sieve and stand up, the dust that comes from behind will catch on it and the flow will stop, and it will no longer serve as a sieve.

[0004]

SUMMARY OF THE INVENTION The present invention provides a vibrating sieve whose function is not impaired by foreign matter mixed therein.

[0005]

The vibrating screen of the present invention comprises a belt conveyor in which the conveyor belt is formed in a mesh shape, and an exciter for vibrating the belt conveyor. Further, a cam may be provided on a roller that rotates while supporting the upper conveyor belt, and the belt may be swung by the cam.

[0006]

The dust on the conveyor belt moves while being subjected to vibration, during which small dust falls down between the meshes of the belt.

[0007]

EXAMPLE A belt conveyor 5 (having a length of about 3 m) is supported on a machine base 1 via a spring. The endless belt 7 of the belt conveyor is made of wire mesh. The size of the mesh is 16 mm
It's about. Reference numeral 9 is a frame of the conveyor, 11 is a belt wheel, and 13 is a drive motor. Belt 7 speed is 10 per minute
It is about m.

On the frame of this belt conveyor 5, the table 1
5 is fixed, and the exciter 17 is installed on the table. Shaker 1
In FIG. 7, a built-in motor rotates an eccentric weight to obtain an exciting force.

The upper side of the belt 7 is a roller 1 arranged at regular intervals.
Support at 9. These rollers are rotationally driven by a motor (not shown). The rotation speed is about 100 rpm. A cam 21 for swinging the belt from below is attached to each of these rollers 19. A shooter 23 that receives dust dropped from the mesh of the upper belt is obliquely inserted between the upper and lower conveyor belts.

Explaining the operation of this apparatus, the shredder dust 27 sent by another belt conveyor 25 falls on the belt conveyor of this apparatus and moves on the belt 7.

On the other hand, the oscillating force generated by the oscillating machine 17 is transmitted to the belt conveyor 5, and the mesh belt 7 vibrates finely. Further, the roller 19 is rotationally driven, and the belt is pushed up from below every time the cam 21 with the roller faces upward.

Due to such an action, the shredder dust 27 on the conveyor belt is shaken, and small dusts 29 such as earth and sand and glass fragments contained in the dust fall down between the meshes of the belt. The dust 29 that has fallen down slides along the shooter 23 and is collected. On the other hand, the shredder dust 27 obtained by sieving earth and sand, glass pieces, etc.
It falls from the end to the bottom and is sent to the combustion furnace.

[0013]

As described above, the vibrating screen of the present invention is subjected to sieving by receiving vibration while dust is moving on the belt. There is no stagnation of garbage due to sticking, and the amount of sieving is large.

Further, if a cam is provided on the roller that rotates while supporting the upper conveyor belt and the belt is swung by the cam, the efficiency of the sieving is improved.

[Brief description of drawings]

FIG. 1 is a side view of a vibrating screen.

FIG. 2 is likewise a front view.

[Explanation of symbols]

 5 Belt Conveyor 7 Mesh Belt 17 Exciter 19 Roller 21 Cam

Claims (2)

[Claims] 1. A vibrating screen comprising a belt conveyor (5) having a conveyor belt (7) formed in a mesh shape, and an exciter (17) for vibrating the belt conveyor. 2. The vibrating screen according to claim 1, further comprising a cam (21) provided on a roller (19) which rotates while supporting the upper conveyor belt, and the cam swings the belt.