JP2002011408A - Vibration sieving device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vibration sieving device capable of reliably separating a material. SOLUTION: A sieve 2 is provided in a tightly closable type vessel 1 and a vibration motor 3 is attached to the vessel 1. The vessel 1 is provided with a charge port 13 and discharge ports 11 and 12, a suction and exhaust device 4 is connected to the discharge port 11 communicated with a space 15 below the sieve 2, an air blower 5 is connected to a space 16 above the sieve 2, and an air stream flowing from the upper side of the sieve toward the lower side is formed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vibration sieving apparatus, and more particularly to a vibration sieving apparatus for sieving powder having a predetermined particle size or less from a carbonaceous adsorbent such as activated carbon.

[0002]

2. Description of the Related Art As an exhaust gas desulfurization apparatus, a dry desulfurization apparatus using activated carbon is known. In this dry desulfurization device, regeneration is performed by heating activated carbon that has adsorbed SOx (sulfur oxide). A vibrating sieve is used to separate and remove dust such as powdered activated carbon contained in the regenerated activated carbon. The device is being used.

[0003] As such a vibrating sieve device, FIG.
Is known. In this apparatus, a tie rod net 2 is arranged as a sieve in a container 1, and a vibration motor 3 is attached to a lower portion of the container 1. When the vibrating motor 3 is driven and activated carbon is introduced from the introduction port 13 on the upper part of the container 1, the activated carbon introduced from the introduction port 13 is subjected to vibration applied to the container 1 and the tie rod network 2 by the excitation motor 3 to form a tie rod network. 2 in the direction of arrow A. During the movement, powders such as dust containing powdered activated carbon having a smaller particle size than the lattice spacing of the tie rod net 2 pass through the tie rod net 2 and fall downward. Is discharged from
On the other hand, particles such as activated carbon having a larger particle size than the lattice spacing of the tie rod net 2 are sent as they are on the tie rod net 2 and discharged from the particle discharge port 12. In this way, the particles and the powder can be separated.

[0004]

However, in this type of apparatus, it is difficult to reliably separate dust adhering to activated carbon from activated carbon. Furthermore, there is a possibility that the performance may be degraded due to dust remaining and accumulating in the system.

[0005] Therefore, an object of the present invention is to provide a vibration sieve device capable of reliably separating materials.

[0006]

Means for Solving the Problems In order to solve the above problems, a vibration sieve device according to the present invention comprises (1) a closed container, (2) a sieve arranged in the container, and (3) A vibrating body for applying vibration to the container, wherein the vibrating body transfers the sieving material on the sieve mesh by the vibration imparted to the container and the sieve mesh, whereby materials having a predetermined particle size or less in the sieving material are sifted downward. The vibrating sieve device for separating and removing the material is characterized in that (4) a suction and exhaust device connected to a material outlet below a predetermined particle size below the container is provided.

According to the present invention, the material having a small particle size is taken together with the sucked air by sucking air from below the sieve by a suction and exhaust device connected to the outlet of the sieved material having a predetermined particle size or less. Separated below the sieve and discharged. On the other hand, a material larger than the sieve mesh or the grid spacing cannot pass through the sieve, so that it is transferred as it is over the sieve in a predetermined direction, and finally from the outlet provided in another place of the container to the outside of the apparatus. Is discharged. As a result, the material can be separated with high accuracy by the particle size. As the sieve, a woven net, a punched net, a grizzly, or the like can be used.

[0008] The air conditioner may further include a blower for blowing air toward the transfer direction on the sieve. In this way, an airflow from the upper part of the sieve to the lower part can be effectively formed, and the separation based on the particle size can be effectively performed.

[0009]

Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 is a sectional view showing a schematic configuration of a vibration sieve device according to the present invention.

In this apparatus, a tie rod net 2 is horizontally disposed as a sieve in a hermetically sealed container 1, and a vibration motor 3 is attached to a lower portion of the container 1. The space 15 below the tie rod network 2 is connected to the powder discharge port 11, and the suction and exhaust device 4 is connected to the powder discharge port 11. A screen 6 for separating air and solids is provided in front of the suction / exhaust device 4. on the other hand,
The space 16 above the tie rod net 2 is connected to the inlet 13 for the granular material that opens upward on the left side in the figure, and to the granular material outlet 12 that opens downward on the right side. The left end of the space 16 is connected to the air blower 5.

Next, the operation of this device will be described.
By driving the vibration motor 3, the air is blown into the space 16 by the air blower 5 while applying vibration to the container 1 and the tie rod net 2, and the air in the space 15 is sucked by the suction and exhaust device 4. That is, a flow of air flowing from the space 16 to the space 15 is formed. In this state, a powdered material, for example, activated carbon containing dust is charged from the charging port 13.

The injected activated carbon moves on the tie rod net 2 in the direction of arrow A by the flow of air in the space 16 and the vibration of the tie rod net 2. While moving on the tie rod net 2 in this manner, dust, powdered activated carbon and the like (hereinafter simply referred to as dust) having a particle size smaller than the lattice spacing of the tie rod net 2 are reduced.
And is sent to the space 15 from the gap of the lattice. Here, since the air flow (arrow B) from the space 16 to the space 15 is formed by the above-described blowing and suction, the falling of the powder is promoted by the air flow. In particular, due to the effect of blowing off dust and the like adhering to the activated carbon particles to separate them, the separation of both is ensured.

In this way, while the powder is sent to below the tie rod net 2, activated carbon particles having a particle diameter larger than the lattice spacing of the tie rod net 2 are sent to the right end of the tie rod net 2, and finally the particle outlet. It is discharged from 12. The powder such as dust sent to the space 15 below the tie rod net 2 is sucked together with the air by the suction and exhaust device 4 and is collected and collected by the screen 6 disposed in front of the suction and exhaust device 4. Since the dust in the space 15 is sucked by the suction and exhaust device 4 together with the air, the dust does not accumulate in the device, and the troubles associated therewith can be effectively prevented.

As described above, according to the present invention, the powder and the granular material can be efficiently and reliably separated by utilizing the air flow. In particular, since the mixing of powder into the granules can be effectively suppressed as compared with the conventional apparatus, for example, when used for separating activated carbon and dust in a moving bed type dry desulfurization apparatus, it is returned to the dry desulfurization apparatus. It is possible to suppress the dust from being mixed into the regenerated activated carbon, and to reliably suppress the clogging of the moving bed.
In addition, when the separation of particles containing environmental pollutants such as powders containing DXNs is performed, the powders containing environmental pollutants are not accumulated in the apparatus, and Good removal can be performed.

Here, the embodiment using the air blower 5 has been described, but it is also possible to simply connect the suction and exhaust device 4 to the powder discharge port 11. This is because, by sucking from below the tie rod net 2 which is a sieve, an air flow directed to below the tie rod net 2 is formed, and the point that the powder can be effectively separated from the granules remains unchanged.

In the above description, an example in which a tie rod net is used as the sieve has been described. However, it is needless to say that various sieves such as a woven net, a punched net, and a grizzly can be used as the sieve. Further, the material to be sieved is not limited to powders and granules, and any material can be used for sieving according to the size of various materials as long as the smaller material can be transported by airflow. Further, the present invention can be suitably applied to an apparatus that performs three or more kinds of sieving.

[0017]

As described above, according to the present invention, in the vibrating sieve device, the suction and exhaust device forms an air flow from the upper side to the lower side of the sieve, thereby effectively separating the granular material and the powder. It can be carried out. The air flow may be further enhanced by a blower above the sieve.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a vibration sieve device according to the present invention.

FIG. 2 is a schematic configuration diagram of a conventional vibration sieve device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Container, 2 ... Tie rod net (sieve), 3 ... Vibration motor, 4 ... Suction / exhaust device, 5 ... Air blower, 6 ... Screen, 11, 12 ... Discharge port, 13 ... Input port.

Claims (2)

[Claims] 1. A closed container, a sieve disposed in the container, and a vibrator for applying vibration to the container, wherein the vibrating member applies a vibration to the container and the sieve to remove a sieving material. By transferring on a sieve, in a vibrating sieve device for separating and removing a material having a predetermined particle size or less from the sieving material below the sieve, the vibration sieve device is connected to a material outlet having a predetermined particle size or less provided below the container. Vibrating sieve device equipped with suction and exhaust device. 2. The vibrating sieve device according to claim 1, further comprising a blower for blowing air on the sieve in a transfer direction.