JPH1034085A - Screen - Google Patents

Abstract

PROBLEM TO BE SOLVED: To keep screening efficiency high by providing a removing means equipped with a removing member for removing a depositions stuck on a screening surface by bringing it into contact with the depositions and a drive mechanism for moving the removing member along the screening surface. SOLUTION: A screen is provided with a removing means equipped with a removing member 2 coming into contact with depositions stuck on a planar screening surface 1 so as to remove the depositions and a drive mechanism 3 for moving the removing member 2 along the screening surface. As the removing member 2, that which comes into contact with depositions stuck on the screening surface 1 so as to remove the depositions is sufficient, and that in the shape of a brush, that in the shape of a spatula, that in which a brush is planted on a ball-like material freely rotatable, or the like is used. As the drive mechanism 3, that which can move the removing member 2 along the screening surface is sufficient, and for example, a bixial drive mechanism formed by combining motors 3a and 3b for driving in the X and Y axes directions which can move in the axes directions by rotation of the axes is used.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sieving apparatus having a plate-shaped sieving surface, and more particularly, to an object to be sieved containing a component having a problem of adhesion to the sieving surface, For example, the present invention relates to a sieving apparatus for sieving earth and stones including clay and the like.

[0002]

2. Description of the Related Art Conventionally, this type of sieving apparatus has a sieving surface made of a metal mesh such as steel or stainless steel or a porous metal having an opening corresponding to the particle diameter to be separated. An apparatus has been used which performs sieving while applying vibration or the like while flowing the object to be sieved placed thereon by gravity, such as by inclining the sieving surface.

[0003]

However, when the object to be sieved contains a component that adheres to the sieving surface, the adhering material causes clogging of the sieving surface, thereby reducing the effective area of the sieving surface. There was a problem that the sieving efficiency was reduced. In that case, stop the device temporarily and
It is necessary to remove the deposits attached to the sieve dividing surface, resulting in a decrease in work efficiency.

[0004] On the other hand, a method of enlarging the area of the sieve separating surface of the apparatus or a method of shaking off the deposits by increasing the vibration imparting power can be considered. In the former case, the deposits are removed. Operation is still necessary, and in the latter case, there is a problem that the power for completely removing the attached matter becomes extremely large.

On the other hand, the sieving object which is conveyed by a belt conveyor or the like and dropped onto the sieving surface falls in a narrow area, and therefore, the sieving efficiency is partially reduced to a form utilizing the sieving surface. Is low, and clogging as described above occurs, the piles are liable to be piled up at that portion, and it is necessary to urgently stop the operation to remove the deposits.

Accordingly, an object of the present invention is to continuously remove adhering substances and to disperse an object to be sieved on a sieving surface to maintain a high sieving efficiency. It is to provide a small sieve device.

[0007]

A feature of the present invention to achieve this object is to provide a sieve apparatus having a plate-like sieve surface by contacting the adhered matter attached to the sieve surface. The present invention is characterized in that a removing means comprising a removing member for removing the deposit and a driving mechanism for moving the removing member along the sieving surface is provided.

Here, it is to be noted that the removing member is a brush, and the driving mechanism moves the removing member back and forth and right and left within a plane substantially parallel to the sieve separating surface. More preferred. In addition, to move back and forth and right and left means that it can reciprocate simultaneously or independently in both the width direction and the length direction of the sieve dividing surface.

[Effects] That is, with the above configuration,
By moving the removing member that comes into contact with the attached matter attached to the sieving surface along the sieving surface, the removing member moves along the sieving surface while removing the attached matter, and the removal area is reduced. It can be expanded, and the effective area of the sieve dividing surface can be prevented from decreasing. In addition, by moving such a removing member along the sieving surface, the sieving object can be dispersed on the sieving surface, and the effective area of the sieving surface can be increased. As a result, the sieving efficiency is high and can be maintained for a long time, eliminating the need to stop the work and remove the deposits. Further, such a device does not need to increase the area of the sieve dividing surface or increase the power for imparting vibration, and can provide a sieve device with small equipment and low power.

When the removing member is a brush, and the driving mechanism moves the removing member back and forth and right and left in a plane substantially parallel to the sieve separating surface, the brush-shaped removing member is provided on the sieve separating surface. Since it has a high ability to come off and come in contact with the deposits and has a small frictional force when it is moved in contact with the sieving surface, the removal efficiency can be further increased, the power is small, and the drive mechanism can be small and small. In addition, when the removing member is moved back and forth and right and left in a plane substantially parallel to the sieve dividing plane by the driving mechanism, the driving mechanism including the control can be easily configured because the operation is monotonous.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a sieving apparatus provided with a plate-shaped sieving surface 1, wherein the removing member 2 removes the attached material by contacting the attached material attached to the sieving surface 1, and the removing member 2. And a drive mechanism 3 for moving the removal member 2 along the sieving surface. The removal member 2 is a brush-like member, and the drive mechanism 3 removes the removal member 2 from the An example is shown in which the material is moved back and forth and right and left within a plane substantially parallel to the sieve dividing plane.

Although details of the structure of the sieving surface 1 are not shown, any of various weaving methods, such as metal or resin, can be used.

The removing member 2 only needs to be able to remove the attached matter by contacting the attached matter on the sieve separating surface 1. For example, a brush-shaped member as shown in FIG. 2 and a brush that is implanted in a rotatable ball as shown in FIG. 3, and the like. In the case of a spatula-shaped removing member, it is preferable that at least the tip end portion is formed of an elastic body, and more preferably formed of a material having a high releasability.

The drive mechanism 3 only needs to be able to move the removing member 2 along the sieving surface, and can be driven in the axial direction by rotating the shaft, for example, as shown in FIG. Using a two-axis driving device in which an X-axis direction (front-rear) driving motor 3a and a Y-axis direction (left-right) driving motor 3b are combined, the respective motors are controlled to move back and forth in a plane substantially parallel to the sieving surface. You may comprise so that the removal member 2 may be moved to right and left. Further, instead of rotating the shaft, the driving force of the motor may be transmitted by a chain so that the same driving operation can be performed. As a means for such control, a conventionally known sequencer or microcomputer may be used.

Further, a vibration imparting means 4 is provided for imparting vibration to enhance sieving efficiency, and the sieve apparatus main body M is supported by a spring 5 or the like to effectively generate vibration. These may be designed according to various types of the sieve device, and the direction of vibration, the mechanism of the vibration applying means, and the like are not particularly limited.

The operation of the above embodiment will be described below. The objects to be sieved (for example, clay and the like containing clay and the like) conveyed by the belt conveyor 6 and the like fall intensively in a narrow area on the sieving surface 1, and are subjected to vibration to be sieved while being sieved. 1 in the downstream direction. At this time,
Deposits such as clay adhere to the sieving surface 1, but the removing member 2 moves along the sieving surface 1 while removing the debris,
It is possible to prevent the effective area of the sieve dividing surface from decreasing. In addition, the object to be sieved can be dispersed on the sieving surface at the same time, and the effective area of the sieving surface can be increased. As a result, the sieving efficiency is high and can be maintained for a long time, eliminating the need to stop the work and remove the deposits.

In the above, the brush-like removing member has a high ability to come in contact with and adheres to the deposits on the sieving surface, and has a small frictional force when it is moved in contact with the sieving surface. The driving power is small and the driving mechanism can be small. In addition, when the removing member is moved back and forth and right and left in a plane substantially parallel to the sieve dividing plane by the driving mechanism, the driving mechanism including the control can be easily configured because the operation is monotonous.

Next, another embodiment of the present invention will be described. <1> In the above-described embodiment of the present invention, an example is shown in which the sieving surface is formed in a rectangular shape and can be sieved in a continuous manner, but as shown in FIG. 4, the sieving surface is formed in a circular shape. It may be a batch type that can be sieved. In this case, the drive mechanism 3 is driven by a linear drive motor 3 for reciprocating the removing member 2.
d and a rotation motor 3c for rotating them. For example, the linear drive motor 3d is slowly driven while rotating the rotation motor 3c to control the removal member 2 to draw a spiral trajectory. And so on. Further, FIG. 4 shows a case in which sieving is performed in a batch system, but a mechanism for flowing an object to be sieved may be provided to enable continuous operation. According to such an embodiment, even when sieving in a batch manner, the removing member 2 moves along the sieving surface 1 while removing attached matter,
The effective area of the sieve dividing surface can be prevented from decreasing,
By dispersing the sieving object on the sieving surface at the same time,
The effective area of the sieve dividing plane can be increased. As a result, the sieving efficiency is high and the sieving time can be reduced.

<2> Embodiments of the present invention are not limited to the above, and the present invention is applicable to a multi-stage sieve having different sieve separation surfaces, a sieve having different vibration types and flow types, and the like. It is.

[Brief description of the drawings]

FIG. 1 is a view showing an embodiment of the present invention, wherein (a) is a partially cutaway front view, and (b) is a plan view.

FIG. 2 is a perspective view showing an example of a removing member used in the present invention.

FIG. 3 is a perspective view showing an example of a removing member used in the present invention.

4A and 4B are diagrams showing an embodiment of the present invention, wherein FIG. 4A is a longitudinal sectional view, and FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Sieve dividing surface 2 Removal member 3 Drive mechanism

Claims (2)

[Claims] 1. A sieving apparatus having a plate-shaped sieving surface, comprising: a removing member for removing an attached matter by contacting the attached matter on the sieving surface; A sieve device provided with a removing unit having a driving mechanism for moving the surface along the surface. 2. The method according to claim 1, wherein the removing member is a brush.
The sieving apparatus according to claim 1, wherein the drive mechanism moves the removing member back and forth and left and right within a plane substantially parallel to the sieving plane.