JPH02152683A - Apparatus for storing particulate material - Google Patents

Abstract

PURPOSE:To smoothly and rapidly discharge a particulate material by removing the bridging of the particulate material in a storage tank by accelerating the downward movement of the particulate material in the main body of the storage tank by the revolving operation of a receiving plate to discharge the particulate material from the gap between the main body of the storage tank and the receiving plate. CONSTITUTION:A receiving plate 12 starts revolving motion by driving a motor 26. A rotary shaft is connected to the receiving plate 12 in an eccentric state shifted by a distance lfrom the center of said receiving plate 12 and the receiving plate 12 is opposed to a storage tank main body 10 in an almost horizontal direction while receives rotational driving and discharges the particulate material accumulated on the receiving plate 12 to a receiving groove 28. The receiving plate 12 is formed into an umbrella like conical shape and the revolving rotary operation of the receiving plate 12 within a horizontal plane simultaneously brings about slight reciprocating shaking in a vertical direction and the receiving plate 12 generates composite shaking action wherein both operations in horizontal and up-and-down directions are combined and accelerates the discharge of a particulate material from the gap between the storage tank main body 10 and the receiving plate 12 while attains to prevent the generation of the bridging in the storage tank main body 10 and rapidly sends out the particulate material toward the receiving trough 28 without generating the stagnation of the particulate material on the receiving plate 12.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a storage device for powder and granular material, and particularly to a discharge mechanism for the powder and granular material filled inside a storage tank.

[Prior art] In order to correct the unbalance in the amount of powder or granules being transported during transportation or to store them for a predetermined period, powder or granules are once filled and stored in a storage tank with a hopper-shaped bottom. After that, a certain amount is discharged.

Conventionally, powder discharge/stop control from a storage tank is
A widely used method was to cover the discharge opening formed at the bottom of the storage tank with a gate plate. However, in this case, the gate plate must be opened and closed every time the supply is stopped or started, which is a constant hassle. In addition, if the storage tank is clogged with powder or a so-called bridge, it cannot be broken by simply opening and closing the gate plate, resulting in a situation where the discharge action stops.

To address these inconveniences, a vibrating hopper has been developed that can stop the material supply by allowing the powder and granules to take their angle of repose by stopping the vibration without having to open and close the gate plate each time. This action also provides a bridge removal effect. However, with this method, the area below the material receiving plate in the storage tank is largely occupied by the vibration mechanism, and the overall capacity of the hopper becomes significantly large compared to the amount of powder and granules that can be stored. This has the disadvantage that space efficiency and processing efficiency are reduced.

[Problem to be solved by the invention] In order to avoid these inconveniences, for example, Japanese Patent Laid-Open No. 59-1
Japanese Patent Application No. 08627 discloses an apparatus in which the space occupied by the vibration mechanism at the lower part of the receiving plate is suppressed by performing vibration in the horizontal direction for discharging powder and granular material.

According to this, although the space occupied in the vertical direction at the bottom of the receiving plate becomes smaller, the mechanism for applying reciprocating vibration becomes more complicated, and the reciprocating motion does not necessarily allow for continuous and smooth ejection of powder and granules. There was a problem.

Purpose of the Invention The present invention has been made in view of the above-mentioned problems of the prior art.The purpose of the present invention is to provide a powder that has a simple and robust structure and can eliminate bridging of powder and granules in a storage tank and discharge them smoothly and quickly. An object of the present invention is to provide a granule storage device.

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a storage tank main body in which powder and granular material is filled and stored and has a cylindrical opening at the bottom thereof, and a cylindrical tank at the bottom of the storage tank main body. a receiving plate disposed so as to face the entire surface of the shaped opening with a predetermined gap therebetween; and a turning drive means for rotating the receiving plate in a substantially horizontal plane; The present invention is characterized in that the powder and granules are discharged from the gap between the storage tank body and the receiving plate by promoting the downward movement of the granules.

[Operation] According to the present invention configured as described above, the receiving plate on which the powder particles are deposited and stored is pivoted by the pivoting drive means. Therefore, the powder on the receiving plate is subjected to a oscillating dispersion action in the horizontal direction.

Here, the receiving plate is separated from the storage tank main body by a predetermined gap, and as the receiving plate rotates, a predetermined amount of powder and granules are placed outside the storage tank main body and at the bottom of the receiving plate from this gap. It falls into a receiving groove, etc., and is sent out to the subsequent conveyance line.

Therefore, according to the present invention, the bridging occurring inside the storage tank can be reliably eliminated and an effective draining effect can be obtained by using a simple mechanism that merely pivots and moves the receiving plate provided at the bottom of the storage tank main body. Is possible.

[Example code] Hereinafter, preferred embodiments of the present invention will be described based on the drawings.

FIG. 1 shows, in longitudinal section, a storage device for powder and granular material according to the present invention. A receiving plate 12 is arranged at the open bottom of the storage tank main body 10, the interior of which is filled with powder, and faces the entire surface of the tank with a predetermined gap therebetween.The receiving plate 12 closes the bottom of the storage tank main body 10. It takes the form of receiving and holding powder and granules inside it.

As is clear from the figure, the receiving plate 12 in the embodiment has an umbrella-like conical shape, and is configured to promote discharge of powder and granular material from the storage tank body 10 as described in 2 below.

A support frame 14 is provided at the lower central part of the receiving plate 12.
2, and an eccentric cam 18 is attached to the periphery of the support frame 14 via a bearing 16 built into the inner wall of the support frame 14.
A rotary shaft 20 on which is mounted is pivotally supported.

Further, the lower peripheral edge of the receiving plate 12 is supported by a holding plate 22 via a spring 20 for imparting vertical vibration to the granular material. This holding plate 22 is integrally formed with a bearing 24 that supports the lower part of the rotating shaft.

As a result, the driving action of the motor 26 causes each structure below the receiving plate 12 to rotate integrally, and the powder and granules filled in the storage tank main body 10 are separated from the storage tank main body 10 and the receiving plate as will be described later. 12 and is discharged to the outside through the receiving groove 28 and sent to the subsequent transport route.

The operation of the device of the present invention will be explained below.

As the motor 26 is driven, the rotating shaft and the receiving slope 12 integrally fixed thereto begin to rotate in a substantially horizontal plane.

As mentioned above, the rotation axis is located at a distance l from the center of the receiving plate 12.
The receiving plate 12 is connected in an eccentric state, and as a result, the receiving plate 12 moves relative to the storage tank main body 10, which is placed in a fixed state, while receiving a rotational drive in a substantially horizontal direction, and the receiving plate 12 accumulates on the upper part thereof. It functions to lead out the powder and granular material to the receiving groove 28.

Here, in this embodiment, as described above, the receiving plate 12
is formed into an umbrella-like conical shape, and therefore, its turning movement in the horizontal plane is accompanied by a slight reciprocating movement in the vertical direction. Therefore, by simply rotating the rotating shaft itself at the same position and in the same direction, it is possible to generate a composite rocking motion that combines both horizontal and vertical motions, thereby creating a bridge within the storage tank body 10. It is possible to effectively promote discharge of the powder and granular material from the gap with the storage tank main body 10 while attempting to prevent this.

In addition, since the receiving plate 12 is formed in a conical shape,
As is clear from the figure, the flow of the powder and granular material through the receiving groove 28 proceeds along an inclined plane, and the receiving groove 28 is completely blocked. The powder and granular material can be continuously and quickly delivered to the receiving groove 28 very effectively without stagnation on the 212.

FIG. 2 shows the external appearance of the device according to FIG. 1.

The powder and granules discharged from the storage tank main body 10 through the above-described steps once fall into the receiving groove 28, and are sent out to, for example, a belt conveyor or the like disposed at a later stage.

As is clear from the figure, the receiving groove 28 in this embodiment is arranged in an inclined shape with a predetermined slope outside the storage tank main body 10, and the powder that falls into the receiving groove 28 after the receiving plate 12 rotates. It is understood that the particles are smoothly guided to a predetermined transport route without becoming clogged along the way.

Although the receiving plate 12 is formed in an umbrella-like conical shape in the uplifting embodiment, the receiving plate 12 is not limited to this, and it is possible to obtain basically the same discharge effect even if it is made into a flat type, for example.

The rotation drive mechanism for discharging powder and granular material in this example is as follows:
As mentioned above, it mainly consists of a single receiving plate, a rotating shaft eccentrically supported by the receiving plate, and a driving means for driving the rotating shaft. Therefore, it is possible to reliably collapse bridges inside the storage tank by the resulting compound rocking action, with a very simple configuration, extremely efficiently, and with minimal mechanical loss, and also to save space. In particular, since the basic movement is turning in the horizontal direction, it is possible to minimize the temporary receiving space and reliably increase the desired evacuation effect.

Moreover, the turning drive mechanism in the present invention is not limited to this, and can also be configured using, for example, a crank mechanism.

[Effects of the Invention] As explained above, according to the present invention, the receiving plate that receives the powder and granules in the storage tank body is configured to rotate in a horizontal plane to discharge the powder and granules, which is very effective. Powder particles with a simple configuration that can efficiently and smoothly discharge the powder to the outside, and also maintain high mechanical strength of the discharge mechanism, and are equipped with a high-performance discharge mechanism at a low cost. A body storage device can be realized.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view showing the structure of the apparatus of the present invention, and FIG. 2 is an external view of FIG. 1. 10... Storage tank body 12... Reception plate 14... Support frame 16... Bearing 18... Eccentric cam 20... Spring 22... Holding plate 24... Bearing 26... Motor 28..., Receptacle groove diagram book manual "I no 7to diagram

Claims (1)

[Claims] (1) A storage tank body in which powder and granular material is filled and stored and has a cylindrical opening at the bottom, and a receiver arranged to face the entire surface of the cylindrical opening at the bottom of the storage tank body with a predetermined gap therebetween. a plate, and a rotation driving means for rotating the receiving plate in a substantially horizontal plane, and the rotating operation of the receiving plate promotes the downward movement of the powder and granular material within the storage tank main body, and the storage tank main body A storage device for powder and granular material, characterized in that the powder and granular material is discharged from a gap between the material and the receiving plate.