JPH0585588A - Hopper for bulk material such as powder, grain and lump material - Google Patents

Abstract

PURPOSE:To prevent bulk materials from being stuck onto wall surfaces of a hopper, control a bridging phenomenon of the bulk materials and smoothen the descending flow of the whole bulk materials in the hopper by forming a part of the inside faces of the hopper, or the front face thereof, with a movable wall capable of moving upward. CONSTITUTION:A hopper for pellets, having four wall faces (a) to (d), is provided with a discharging rail device 4 at the lower part of a hopper body 1 and, according to the actuation of said device 4, pellets 3 (e.g. kneaded granular material consisting of sludge containing iron, cement and added water) are fed to a subsequent step e.g. a crushing strength measuring device. In this case, a belt conveyor device 2 is provided at a part of the side wall face on the side of the rail device 4 among the side wall faces of the hopper body 1 so as to form a movable wall with an upwardly moving belt 5 having the same width as that of a part of said side wall face. The moving belt 5 is provided in such a manner that its lower end is positioned right above the rail device 4 over the total width thereof while its upper end is projected slightly upward from the level of the top end of the hopper body 1. As a result, a bridging phenomenon of the pellets in the hopper can be prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to powder, granules, lumps,
The present invention relates to a hopper that cuts out loose materials such as pellets and other granules, and is intended to prevent or prevent a crosslinking phenomenon in the hopper.

[0002]

2. Description of the Related Art For example, a hopper for supplying the loose sample for particle size distribution measurement, strength measurement, shape distribution measurement, component analysis, etc., retains the property at the time of storage as it is and stores it without breaking the prototype. It is necessary to cut out smoothly, but the bulk sample often causes a crosslinking phenomenon in the hopper.

There are the following conventional methods in order to prevent or prevent the cross-linking phenomenon of loose materials in the hopper. I. High-pressure water injection into the hopper b. Vibration of the inner surface of the hopper by the vibrator c. Filling the hopper with high-pressure air d. Micro vibration of the inner surface of the hopper and loose material in the hopper due to ultrasonic waves.

[0004]

The above-mentioned prior art is
It has the following problems. (B) A large amount of water is contaminated and noise is generated due to the device using high-pressure water. (B) Since the vibration is applied from the outside, the inside is broken, the loose pieces are scratched, and the noise is loud. (C) A large amount of air is required to blow high-pressure air, which leads to pollution. (D) In the case of applying ultrasonic waves to the side surface to prevent the cross-linking phenomenon, the bulk itself is easily damaged, and it is less effective for large bulks.

[0005]

In order to solve the above-mentioned problems, the present invention is characterized in that a part or all of the side wall is constituted by a movable wall which can be moved continuously or intermittently from bottom to top. It is in the hopper of loose materials such as powder, granules, and agglomerates.

[0006] Further, in the above hopper for loose material, the movable wall is formed by an endless belt and a capillar.

[0007]

According to the present invention, the contact portion of the loose object in the hopper or the contact portion with the movable wall and its vicinity are finely moved or flowed or rotationally displaced by continuous or intermittent upward movement of the movable wall. The relative movement is performed to prevent the loose material from adhering to the movable wall and suppress the bridging phenomenon due to this, so that when the loose material is cut out from the lower part of the hopper, the downward flow of the whole loose material in the hopper can be performed smoothly. is there.

[0008] Therefore, the loose material in the hopper is not damaged or dust is generated, and the loose material in the same state as when the hopper is stored is used for the particle size (distribution) measuring device, the shape (distribution) measuring device, It has been realized to be supplied to a crushing strength measuring device and the like.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will now be described in detail with reference to the accompanying drawings.

FIG. 1 is a side view showing a pellet hopper according to an embodiment of the present invention, and FIG. 2 is a plan view of FIG.

In these figures, 1 is 4 wall surfaces (a to d)
Hopper body (height: 600 mm, upper end short size: 400 mm x 350 mm, lower end short size: 20
0 mm × 200 mm, internal volume: 0.06 m ³ ), 4 is a rail device for cutting provided in the lower part of the hopper main body 1, and a pellet 3 (grain size: particle size: 8-18 mm in diameter, composition: iron-containing sludge, cement and added water) are fed.

2 has the same width (185 mm) on a part of the side wall surface (d) on the inner rail device 4 side of the side wall surface of the hopper body 1.
It is a belt conveyor device that forms a movable wall by the upward moving belt 5. Upward moving belt 5 of belt conveyor device 2
Has a lower end located entirely above the rail device 4 and an upper end protruding slightly above the upper level of the hopper body 1.

[0013] Now, a belt 5 of the belt conveyor device 2 accommodates the pellets 3 of 0.05 m ³ in the hopper body 1, while driving with the upward moving speed of 0.1 to 1 m / min, the rail device When the whole amount of the pellet 3 was cut out in 4, the whole amount of the pellet could be cut out smoothly without causing a crosslinking phenomenon.

[0014]

As is apparent from the above description, according to the present invention, the simple structure as described above prevents the loose material from adhering to the movable wall and suppresses the cross-linking phenomenon caused by the loose material. When the material is cut out, it is possible to smoothly perform the downward flow of the whole loose material in the hopper.

Therefore, the loose material in the hopper is not damaged or dust is generated, and the loose material having the same properties as when the hopper is stored is used for the particle size (distribution) measuring device, the shape (distribution) measuring device, and the crushing strength measurement. It has been realized to be supplied to devices and the like.

[Brief description of drawings]

FIG. 1 is a side sectional view showing a pellet hopper according to an embodiment of the present invention.

FIG. 2 is a plan view of FIG.

[Explanation of symbols]

 1 Hopper body a to d 4 Side wall surface 2 Belt conveyor device 3 Pellet 4 Rail device 5 Upward moving belt

Claims (1)

[Claims] 1. A hopper for loose objects such as powder, granules, and agglomerates, characterized in that a part or the whole of the inner surface of the hopper is constituted by a movable wall that can move from the bottom to the top.