JPS6099371A - Vibrating screen with loading preventive device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a vibrating sieve that sieves the treated material by feeding it onto a vibrating sieving screen, and particularly to a method for removing deposits on the vibrating sieving screen. Concerning vibrating sieves with possible anti-clogging.

[Background of the invention]

Conventional vibrating sieves supply a material to be treated onto a vibrating sieve screen, and use the vibrations to remove water contained in the material and perform particle sizing (sieving). In such a sieve, depending on the type of the material to be processed, the material to be processed may adhere to the upper surface of the sieve screen, causing clogging. The occurrence of clogging causes a decline in the throughput and processing performance of the vibrating sieve, and the reality is that it is difficult to take countermeasures against this problem. Conventionally, countermeasures have been taken such as making various improvements to the material of the woven edge of the sieve net, the shape of the screen, etc.

However, despite such efforts, the reality is that it is not possible to completely prevent the attachment of deposits. Therefore, the vibrating sieve had to be temporarily stopped, and the operator had no choice but to remove the foreign matter adhering to the sieve screen. This is in addition to the inconvenience of having to clean and remove debris.

This work causes a problem in that the operating rate of the vibrating sieve decreases and the throughput decreases.

[Purpose of the invention]

An object of the present invention is to provide a vibrating screen equipped with a clogging prevention device that can automatically remove deposits adhering to the screen screen surface while the vibrating screen is in operation. [Summary of the Invention] In the present invention, A long and thin brush is provided in contact with the sieve mesh surface of the vibrating sieve in the flow direction of the material to be processed, and the brush is moved by a drive device in a direction perpendicular to the flow direction of the material to be processed. shall be. The reasons for using the elongated brush and installing the brush in the flow direction of the material to be treated are as follows. That is,
this is.

The purpose of this is to minimize the interference with the processed material flowing on the screen surface of the sieve, and to ensure that the effective width of the screen surface is as large as possible.

[Embodiments of the invention]

The present invention will be explained in detail below based on specific examples. FIG. 1 is a diagram for explaining the arrangement of brushes.

FIGS. 2 and 3 show an embodiment of a vibrating screen with a clogging prevention device according to the present invention.

First, the arrangement of the brushes on the screen will be explained using FIG. This figure shows the vibrating sieve viewed from above. The processed material moves on the sieve Jllll from the left to the right in the figure. This direction is defined as the A direction. The brush 2 is provided in this inlet direction, and its width is very narrow compared to the width B of the sieve screen I. On the other hand, the length of the brush 2 is close to the length of the sieve net 1. Therefore, the shape of the brush 2 can be said to be very elongated. This brush 2 moves in a direction perpendicular to the A direction. This direction is defined as the C direction. Although it is not clear in this figure, the tip of the brush 2 is arranged so as to be in sufficient contact with the upper surface of the sieve net 1.

Next, the present invention will be explained in detail using FIGS. 2 and 3. Figure 2 is a top view of the vibrating sieve, and the third
The figure is a sectional view taken along the line DD in FIG. 2. In these figures, %l is the sieve screen and 2 is the brush.

3 is a vibrating sieve stand, 4 is a spring that receives the vibrating sieve, 5 is
1 is a frame, 6 is a rail, 7 is a trolley, 8 is a sprocket, 9 is a sprocket, 10 is a chain, 11 and [ are limit switches, 13 is a motor, and 14 is a drive wheel.

15 is a spring holder, and 16 is a vibrating sieve 4. first.

The sieve net 1 is installed in a vibrating sieve 16 as shown in the figure, and the sieve 16 is installed on a vibrating sieve stand 3 made up of a spring receiver 15 and a spring 4. The rail 6 is supported by the frame 5 and is installed above the vibrating sieve 16. A trolley cart 7 moves on this rail 6 by rotation of a drive wheel 14.

The brush 2 is attached to the lower part of the trolley car 7, and brushes the sieve net 1 as the trolley car moves. The drive wheel 14 transfers the rotational force of the motor 13 to the sprocket 8.
．． It is rotated by receiving the chain lO through the sprocket 9. When the trolley car moves on the rail 6 and reaches the position of the limit switch 11 or 12, the direction of rotation of the motor 13 is switched by the operation of this switch. Therefore, the trolley cart 7 has two limit switches 1
It will move back and forth between 1 and 12. As a result, the brush 2 also moves on the sieve screen 1 in a direction perpendicular to the flow of the material to be treated (0 direction).

According to this embodiment, deposits generated on the sieve mesh surface can be removed by moving the brush 2 in the O direction, and clogging of the sieve mesh wheel can be prevented. Note that the second movement in the C direction is performed to prevent clogging, so it is sufficient to move it at a fairly slow speed.

If necessary, it may be moved only when clogging occurs. The preferred sound is generated by detecting clogging of the vibrating sieve or detecting a decrease in performance due to clogging using an appropriate means, and based on the detection, the brush 2 is moved for a certain period of time to perform brushing.

In the embodiment described above, the brush 2 is moved by the trolley cart 7, but the present invention is not limited to such a moving means. Any drive device that can move the brushes may be used. For example, the brush may be moved using a reciprocating cylinder.

〔Effect of the invention〕

As described in detail above, according to the present invention, it is possible to automatically remove deposits adhering to the screen surface of the screen without stopping the vibrating screen.

Therefore, there is an effect that both stopping the vibrating sieve and removing the deposits by the operator are unnecessary.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing the arrangement of brushes, and FIGS. 2 and 3 are diagrams showing an embodiment of the present invention. 1... Sieve net, 2... Brush, 3.
...Perturbation sieve stand, 4...Spring, 5.
...Frame, 6...Rail, 7...
...Trolley cart, 8... Sprocket. 9...Sprocket, lO...Chain, 11...Limit switch, 12...
...Limit switch, 13...Motor, 14...
... Drive wheel, 15 ... Spring holder, 16 ...
...Vibration Furoiwanaki Agent Patent Attorney Akio Takahashi Figure 1

Claims (1)

[Scope of Claims] 1. A vibrating sieve that sieves the processed material by supplying the processed material onto a vibrating sieve screen. A brush having an elongated shape in the flow direction of the material to be treated is provided so as to be in contact with the upper surface of the sieve net, and a drive device is provided for moving the brush in a direction perpendicular to the flow direction of the material to be treated. Vibrating sieve with anti-clogging device.