JP3140578B2 - Powder collecting device for rice bran etc. - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for collecting pulverized powder such as rice bran generated by milled rice or the like.

[0002]

2. Description of the Related Art In the case of milled rice and cereals, the generated bran is transported to other places by air and collected. Conventionally, a cyclone collector is often used as a device for collecting bran transported by air, and a device as shown in FIG. 4 is generally used.

[0003] That is, in this conventional apparatus, a conical collection box 2 having an open upper and lower part and an outer cylinder 4 standing upright in the upper end of a vertically-stacked cylindrical accumulation box 1. And middle cylinder 5
And a cyclone collector 3 comprising an inflow pipe 6. At the upper end of the accumulation box 1, a filtration chamber 7 to which a bag-shaped filter cloth 8 is attached is provided. The lower portion of the stacking box 1 is provided with a stacking hopper 20, an inclined discharge gutter 24 and an outlet 9.

[0004] In the above apparatus, the bran discharged from the rice mill is pneumatically transported and sent from the inflow cylinder 6 to the space between the outer cylinder 4 and the middle cylinder 5 of the cyclone collector 3 to be gas-solid separated. The air and light bran fall from the outer cylinder 4 into the collecting hopper 20, and the air and light bran enter the filtration chamber 7 from the middle cylinder 5, and the air passes through the filter cloth 8 and is discharged outside the machine. Further, the bran adhering to the filter cloth 8 is temporarily peeled off and falls into the collecting hopper 20 through the collecting box. The bran dropped into the accumulation hopper 20 is taken out of the machine from the discharge port 9 by the inclination of the discharge gutter 24.

[0005]

However, in the above-described conventional apparatus, when the bran separated by the cyclone falls from the outer cylinder 4 into the collecting box 1, the bran passes through the collecting box 2 into the filter cloth chamber 7. May soar. In addition, since the air from the middle cylinder 5 strongly hits a part of the filter cloth 8, fine powder is released there together with the air. Further, there are many problems to be improved, such as that the bran accumulated in the accumulation hopper 9 may be scattered or blown out from the discharge port 11.

[0006] The present invention solves the problems of the above-mentioned conventional apparatus, and can prevent sowing of falling bran, discharge of fine powder from a filter cloth, and blowing out from a discharge port, and the separation of air and bran is effective. It is intended to provide a device for collecting powder of rice bran or the like, which can ensure the working environment in a hygienic manner.

[0007]

The structure of the present invention for achieving the above object will be described with reference to the drawings corresponding to the embodiments. A collection box 2 having an inverted conical or pyramid shape and open up and down is provided in the upper end of a collection box 1 formed in a cylindrical shape and having a discharge port 9 at a lower portion. 4 and a cyclone collector 3 having a middle cylinder 5 having a dispersion member 11 protruding at the upper end thereof and an inflow pipe 6, and a flow gap 15 is provided between the outer cylinder 5 and the inner periphery of the lower end of the collection box 2. The collection gap 15 is closed and opened freely, and a bag-shaped filter cloth 8 is attached to the upper end of the collection box 2 to communicate with the collection box 2 and the middle cylinder 5. It is characterized in that a filtration chamber 7 is formed.

In the powder collecting apparatus for rice bran or the like according to the second aspect, an accumulation hopper 20 provided with a stirrer 21 is provided below the accumulation box 1 and connected to a lower end opening of the accumulation hopper 20. And a discharge gutter 24 communicating with the discharge port 9 of the collecting box 1.
The shield plate 28 is inclined downward toward the discharge port 9 and is provided so as to swing freely, and a shielding plate 28 capable of elastically opening and closing the discharge port 9.
Is provided.

[0009]

[Action] From the inflow pipe 6 to the outer cylinder 4 of the cyclone collector 3
The bran (powder) pneumatically transported into the inside is separated from the air by the action of the cyclone, falls from the lower end of the outer cylinder 4 and is stored in the collecting hopper 20. On the other hand, the separated air flows out of the upper end through the middle cylinder, is diffused into the filtration chamber 7 by the dispersion medium 11, and the air is discharged through the filter cloth 8. At this time, the fine powder mixed in the air is captured by the filter cloth 8. The captured fine powder falls in a timely manner and the collection box 2
And is deposited on the partition plates 16 and 16. When the required amount of fine powder is deposited, the partition plate is automatically
16 and 16 are opened, or the dividers 16 and 16 are opened manually,
The deposited fine powder falls and is stored in the collecting hopper 20.

The bran stored in the collecting hopper 20 flows into the discharge gutter 24 from the lower end thereof, and is promoted by its inclination and swing to flow down to the discharge port 9, and the amount thereof reduces the resistance value of the shielding plate 28. If it does, the shield plate 28 will be pushed open and will flow out of the machine. At this time, by rotating the stirrer 21, the bran contained in the accumulation hopper 20 is prevented from being in a bridge state, and the bran can be smoothly discharged.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will now be described with reference to FIGS.
This will be described with reference to FIG. In the figure, reference numeral 1 denotes an accumulation box formed in a vertically long cylindrical shape, the upper end of which is open, and a lower end having a discharge port 9 on one side. A hopper-shaped collection box 2 having an inverted cone or an inverted pyramid shape and having an open top and bottom is provided in the upper end portion of the accumulation box 1 so that the periphery of the upper end is in close contact with the inner peripheral surface of the upper end of the accumulation box 1. It is provided.

Reference numeral 3 denotes a cyclone collector which is concentrically provided in the collection box 2 via a support (not shown). The lower part of the outer cylinder 4 is formed in an inverted conical shape and the lower end is opened. A small-diameter upper and lower open middle cylinder 5 is provided concentrically in the upper end portion, and the space between the upper end of the outer cylinder 4 and the middle cylinder 5 is closed. An inflow pipe 6 connected to a bran discharge cylinder 10 of a rice mill or the like protrudes in the lateral direction. The lower end of the outer cylinder 4 has a required flow gap 15 between itself and the inner periphery of the lower end of the collection box 2 and projects slightly below the lower end thereof. It protrudes above the upper end of the body 2.

At the upper end of the middle cylinder 5, a dispersion member 11 is protruded. For example, as shown in the figure, the dispersion body 11 is formed by being fixed to the tip of a support rod 13 having a plurality of annular bodies 12 erected, but is not limited to this. Any structure can be used as long as air or the like flowing out of the device can be diffused in each direction. A bag-shaped filter cloth 8 is attached to the open upper end of the collection box 2 and is kept cylindrical by the standing support frames 14 and 14. A communicating filtration chamber 7 is formed.

Further, at the lower end of the collection box 2, a pair of partitioning plates 16, 16 are provided at one end of the collection box 2 which are closed and opened to close and open a flow gap 15 formed between the outer cylinder 4. The opening 17 is provided to be freely openable and closable, and the flow gap 15 is normally closed by a spring or a lock mechanism.
When the required amount of bran has accumulated on the top 16, the bran is opened by its weight or manually opened and closed appropriately. In addition, the partition plates 16 and 16 can be opened and closed appropriately by an operation from outside the machine.

In the lower part of the stacking box 1, there is provided a stacking hopper 20 having a rectangular lower end and an opening, the outer periphery of the upper end of which is in close contact with the inner surface of the stacking box 1. Inside the hopper 20, a shaft rod that is rotated by operation from outside the machine
A stirrer 21 having a stirrer 23, 23 protruding from 22 is provided. A discharge gutter 24 connected to the entire opening at the lower end of the stacking hopper 20 and having one end communicating with the discharge port 9 and having a bottom inclined downward toward the discharge port 9 is placed on the roller 25. The eccentric oscillating device 27 driven by the motor 26 oscillates in the front-rear direction as shown by the arrow.

The discharge port 9 communicating with the discharge gutter 24 has:
A shield plate 28 for opening and closing the cover is provided. This shield
The numeral 28 is normally suspended by its own weight and closes the discharge port 9 so that the lower part rotates with the upper part as a fulcrum, and rotates and opens the discharge port 9 when excessive back pressure is applied. Alternatively, an elastic plate such as a rubber plate may be used to fix the upper portion thereof, and the discharge port 9 may be elastically opened at a required back pressure. In the drawing, reference numeral 29 denotes a cover of the discharge port 9, and reference numeral 30 denotes an inspection window provided between the collecting box 2 of the collecting box 1 and the collecting hopper 20.

[0017]

Since the powder collecting apparatus of the present invention is constructed as described above, it exhibits many excellent effects as listed below.

(1) The bran (powder) pneumatically transported from a rice mill or the like flows into a cyclone collector and is separated into gas and solid, and the bran is stored in a lower collecting hopper and discharged outside the machine. The powder is discharged to the outside through the filter cloth, and the powder can be collected efficiently.

(2) The flow gap between the collection box and the outer cylinder of the cyclone collector is closed except when necessary by the partition plate, so that the bran falling from the outer cylinder enters the filter chamber. In addition to preventing the filter cloth from being clogged, the bran accumulated on the partition plate can be opened and dropped into the collecting hopper as appropriate.

(3) The air coming out of the middle cylinder of the cyclone collector is diffused into the filter chamber by the dispersion without being concentrated on a part of the filter cloth, so that the separation effect by the filter cloth is maintained for a long time. be able to.

The device according to claim 2 has the following excellent effects in addition to the above effects.

(4) The bran contained in the stacking box can be discharged smoothly by a discharge value that is inclined and swings and the rotation of the stirrer. (5) Since the discharge port is provided with a shielding plate that is opened by back pressure, the bran does not blow out from the discharge port when the rice bran begins to accumulate. Is discharged, the amount is controlled, and the discharge can be controlled while always maintaining a constant closed state.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional front view showing an embodiment of the apparatus of the present invention.

FIG. 2 is a vertical sectional side view of the same part.

FIG. 3 is a sectional view taken along line AA of FIG. 1;

FIG. 4 is a vertical sectional side view showing a conventional device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Accumulation box 2 Collection box 3 Cyclone collector 4 Outer cylinder 5 Middle cylinder 6 Inflow pipe 7 Filtration chamber 8 Filter cloth 9 Discharge port 11 Dispersing body 15 Flow gap 16 Partition plate 20 Accumulation hopper 21 Stirrer 24 Discharge gutter 27 Swing Equipment 28 Shield plate

Claims (2)

(57) [Claims] A collection box having an inverted conical or pyramid shape and open up and down is provided in an upper end portion of an accumulation box formed in a cylindrical shape and having a discharge port at a lower portion, and an outer cylinder is provided in the collection box. And a cyclone collector provided with a middle cylinder and an inflow pipe with a dispersion member protruding at the upper end thereof, with a flow gap between the outer cylinder and the lower end inner periphery of the collection box body, and this flow gap is established. Characterized in that a filter chamber is formed at the upper end of the collection box, and a filtration chamber communicating with the collection box and the inner cylinder is formed. Powder collecting device. 2. A stacking hopper provided with a stirrer is provided below the stacking box, and a discharge gutter connected to a lower end opening of the stacking hopper and communicating with a discharge port of the stacking box is provided.
2. A powder collecting device for rice bran or the like according to claim 1, wherein a shield plate is provided which is inclined downward toward the discharge port and is swingably provided, and a shielding plate capable of elastically opening and closing the discharge port is provided. apparatus.