JP2006263696A - Stay suppression rectifying blade - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a stay suppression rectifying blade capable of easily diffusing a supplied particulate raw material all over without stay at a low cost and improving classification accuracy and efficiency just by being attached to the screen mesh frame of a circular vibration screen and used. <P>SOLUTION: The stay suppression rectifying blade 3 having a curved shape is formed of a thin plate capable of resonance and amplitude to vibrations generated from the circular vibration screen, an opening 4 is partially provided, and it is attached to the frame body of a screen mesh by providing an optional gap 6 at the bottom surface of the screen mesh. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a rectifying blade used by being attached to a sieve mesh frame in order to suppress stagnation of the raw material when classifying a granular material using a vibrating sieve mesh.

  Conventionally, a circular frame with a sieve screen stretched is fixed to a vibration generator, and the supplied powder material is subjected to vibration and moved in the rotational direction, and then classified on the sieve and below the sieve through the mesh openings. A circular vibrating sieve is often used.

Such a circular vibration sieve or the like determines the conditions by selecting the vibration frequency to be applied and its strength in accordance with the shape, weight, supply amount, etc. of the granular material that is the supplied raw material. However, there are problems such as a decrease in classification efficiency due to retention of raw materials, and conditions that satisfy all of them cannot be fixed.
Therefore, a method is used in which external force is applied to the supplied granular material to suppress stagnation and increase diffusion efficiency, or a method of controlling from the device side by switching the vibration frequency and vibration direction intermittently. ing.

However, according to the above technique, the higher the frequency of the circular vibrating sieve, the better the passing efficiency from the sieve mesh, but the supplied powder material gathers in the center of the sieve with a thickness, and the bottom mesh and As a result of the less chance of contact, retention will occur that degrades classification accuracy and efficiency. On the other hand, when the frequency is lowered, they gather in the outer circumferential direction. Device side control such as diffusion by mixing the feedstock itself and switching of vibration frequency and vibration direction is not easy.
In view of this, an object of the present invention is to provide an inexpensive and easy way to diffuse to the entire circular vibrating screen without stagnating with respect to an arbitrary vibration frequency imparted by the supplied granular material.

  In order to solve the above-described problems, the present invention uses a rectifying blade having a curved shape in which a granular material supplied to a circular vibrating sieve or the like is easy to fluidly move in the rotation direction, and is used by attaching it to a sieve mesh frame. It was possible to suppress the stagnation that the raw materials gathered with a thickness in the central part of the sieve and the outer peripheral direction, which led to a solution.

  Further, the rectifying blade is formed of a thin plate that can resonate and swing with respect to vibration generated from the apparatus, thereby improving diffusion efficiency.

  When attaching to the sieve mesh frame, increase the chance of contact with the bottom mesh by providing an arbitrary gap from the bottom of the sieve mesh so that the supplied granular material raw material can pass the appropriate amount under the rectifying blade Can improve classification efficiency.

  In addition, if a part that tends to stay in the supplied granular material is inevitably generated, the entire flow amount can be adjusted by providing an opening in the rectifying blade, and the diffusion to the circular vibrating sieve can be distributed over the entire area. It becomes possible.

  Depending on the type of granular material to be supplied and various conditions applied to the vibration generator, it is possible to quickly respond to the selection and replacement of different objects such as the opening, thickness, height, and shape of the rectifying blades. Easy to attach and detach.

  As described above, according to the present invention, by using the stay-suppressing rectifying vanes in the sieve mesh frame, it becomes possible to diffuse the supplied granular material material to the entire circular vibrating sieve without staying. It is cheap and easy to improve classification accuracy and reduce classification time.

  Embodiments of the present invention will be described in detail with reference to the drawings. 1 to 2 relate to an embodiment of the present invention, FIG. 1 is a perspective view showing the embodiment, and FIG. 2 is a sectional view thereof.

  As shown in FIG. 1 to FIG. 2, by using a stay-suppressing rectifying vane 3 having a curved shape in which the supplied raw material easily moves in the rotation direction and attached to the sieve mesh frame 1, the raw material is in the central portion or outer periphery of the sieve. Restraining stays that gather in the direction with thickness. The stay-suppressing rectifying vanes 3 may be increased or decreased in number so that they can be guided in a fluid manner, and the shape of the stay-suppressing rectifying wings 3 is, for example, a reverse curve or a V-shaped or linear shape attached in a radial pattern. It is not limited to this.

  Further, the staying suppression rectifying blade 3 is formed of a thin plate that can swing with respect to vibration generated from the apparatus, thereby improving the diffusion efficiency. The material is selected depending on the application, such as metal or resin.

  When attaching to the sieve mesh frame 1, a gap 6 as shown in FIG. 2 is provided from the bottom of the sieve mesh 2 so that the supplied granular material 5 can pass through the lower part of the stay suppressing rectifying blade 3. This increases the chances of contact with the bottom net and improves classification efficiency. The gap 6 arbitrarily determines an optimum height according to the supplied powder material 5.

  In addition, when a portion that tends to stay in the supplied granular material 5 is inevitably generated, the flow rate of the entire circular vibrating sieve is adjusted by providing an opening 4 in the stay-suppressing rectifying blade 3.

Depending on the type of granular material 5 to be supplied and various conditions to be applied to the vibration generator, the residence restraining rectifier blade 3 selects the opening 4 or a different one in thickness, height, shape, etc. It has a structure that can be easily attached and detached so that it can be quickly replaced.
Here, the fastening with the screw 7 and the pin 8 has been shown as an example, but insertion with an insertion portion provided in the sieve mesh frame, insertion into the sieve mesh frame, or the like may be used, and the present invention is not limited to this.

It is the perspective view which showed embodiment of this invention. It is sectional drawing which similarly showed embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Sieve net frame 2 Sieve net 3 Stay restraint rectifier blade 4 Opening part 5 Granule raw material 6 Crevice 7 Screw 8 Pin

Claims (5)

  The granular material supplied to a sieve mesh frame such as a circular vibrating sieve is attached to the frame with a rectifying wing made of a curved shape that is easy to move fluidly in the rotational direction. It is characterized by that.   2. The stay-suppressing rectifying vane according to claim 1, wherein the stay-suppressing rectifying vane is formed of a thin plate capable of resonating and swinging against vibration generated from the apparatus.   3. The method according to claim 1, wherein an arbitrary gap is provided from the bottom surface of the sieve mesh so that the granular material supplied to the sieve mesh frame of the circular vibrating sieve can pass an appropriate amount below the rectifying blade. The stay-suppressing rectifying blade described.   The stay-suppressing rectifying vane according to claim 1, wherein the stay-suppressing rectifying vane has a shape partially having an opening.   According to any one of claims 1 to 4, characterized in that it can be easily attached and detached or exchanged according to the type and purpose of use of the sieve mesh to be attached to the circular vibrating sieve and the type of the granular material to be supplied. The stay-suppressing rectifying blade described.

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