JPH1072001A - Granular material fixed feeder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fixed quantity supply of a granular material configured so as not to adversely affect a flow meter in the middle of a granular material supply pipe connected to an outlet when removing a granular material by air injection. Provide equipment. SOLUTION: A casing 4 having a storage space portion for the granular material and having a discharge port 3 formed at the bottom, a rotating shaft 5 disposed at the center of the storage space portion of the casing 4,
A powdery or granular material comprising a rotating body 7 attached to the rotating shaft 5 so as to be rotatable in the storage space and provided with a plurality of fixed volume extraction chambers 6 on an outer peripheral portion corresponding to the discharge port 3 In the fixed amount supply device, an auxiliary outlet 11 is provided at a position different from the outlet 3 of the casing 4 and at a position on the lower side in the rotation direction from the outlet 3, and a lower portion of the casing 4 corresponding to the auxiliary outlet 11 is provided. In the rim, fixed amount extraction room 6
An air injection nozzle 12 for injecting air is disposed on the inner wall surface of the device.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for quantitatively supplying a granular material.

[0002]

2. Description of the Related Art Incinerated fly ash contains harmful substances.
Therefore, at the time of landfill treatment, it is solidified by cement for detoxification.

[0003] When the cement is solidified by the cement, it is necessary to quantitatively supply fly ash. Conventionally, as a supply device for quantitatively supplying such powder or granules such as fly ash, there is a supply device as shown in FIGS.

The fixed-quantity supply device 51 includes a casing 54 in which a discharge port 52 is provided at a predetermined position on the bottom and a storage space 53 for storing powders is formed in the center, and a storage space 53 of the casing 54. A cutting shaft connected to the rotating shaft 55 and disposed in the storage space 53 of the casing 54 and having a plurality of fixed volume cutting chambers 56 formed therearound. A rotator 57, an arc-shaped lid 58 disposed above the fixed amount cutout chamber 56 on the outer periphery of the rotator 54 and centered on the discharge port 52 side, and a guide cone of the rotator 57 57a, and a plurality of scraping rods 59 projecting from the outer periphery of the lower edge portion in four directions. The opposite side of the lid 58 is formed as an opening 60 for introducing the granular material in the storage space 53 into the fixed quantity extraction chamber 56.

Further, in order to prevent the particles from adhering to the inner wall surface of the fixed quantity extraction chamber 56, air is supplied to the lower edge of the casing 54 corresponding to the discharge port 52 to supply the particles. The air injection nozzle 61 for blowing off the air was inserted and arranged.

[0006] In the above-described configuration, the powder or fly ash, which has been thrown into the casing 54 from the hopper 71 disposed above the casing 54, is quantitatively cut out from the outer periphery of the rotating body 57 through the opening 60. It is filled in the chamber 56, passes below the lid 58, reaches the outlet 52, and is supplied at a constant rate from the outlet 52 opened at the bottom.

The air injection nozzles 6 are arranged at regular intervals.
Air was injected from No. 1 to remove fly ash attached to the inner wall surface of the fixed quantity extraction chamber 56.

[0008]

By the way, in the middle of the powder supply pipe connected to the discharge port 52 of the powder and particle quantitative supply device, the supply amount is measured to determine the amount of water added to the fly ash. A flow meter for control is provided, and the flow meter causes fly ash to collide with the detection plate, and the impact force of the collision causes the detection plate to move (for example, move in a horizontal direction). Was measured to determine the flow rate of fly ash.

Since such a flow meter is disposed in the middle of the powder supply pipe connected to the discharge port 52, the air for removing fly ash injected from the air injection nozzle 61 is supplied to the detection plate of the flow meter. And thus the amount of water added to the fly ash was sometimes unstable.

In view of the above, the present invention provides a method for quantitatively supplying a granular material which is configured so as not to adversely affect a flow meter in the middle of a granular material supply pipe connected to an outlet when removing the granular material by air injection. It is intended to provide a device.

[0011]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a device for quantitatively supplying granular material, which comprises a casing having a space for storing granular material and having a discharge port formed at the bottom, A rotating shaft that is arranged at the center of the storage space and is rotatably driven by being linked to the rotary drive, and attached to the rotating shaft so that the inside of the storage space is rotatable and the discharge port In a powder and granular material fixed supply device comprising a rotating body provided with a plurality of fixed quantity cut-out chambers on a corresponding outer peripheral portion, a position different from the discharge port of the casing and a position on the lower side in the rotation direction from the discharge port. In addition, another outlet is provided, and an air injection nozzle for injecting air to the inner wall surface of the fixed quantity cutout chamber is arranged at an edge of the casing corresponding to the other outlet.

According to the above construction, the auxiliary discharge port is provided at a position different from the discharge port for discharging the granular material and on the lower side in the rotation direction, and the air injection nozzle is disposed at the auxiliary discharge port. When air is injected into the cutout chamber, the air does not enter the powder supply pipe connected to the original outlet.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a powder and granular material supply apparatus according to the present invention will be described below with reference to FIGS.

As shown in FIGS. 1 and 2, the apparatus 1 for quantitatively supplying a granular material includes a cylindrical casing 4 having a storage space 2 for storing the granular material and having a discharge port 3 at the bottom. A rotating shaft 5 that is vertically arranged at the center of the storage space 2 of the casing 4 and that is rotationally driven in conjunction with a rotation driving device (not shown, for example, an electric motor); And a rotatable member 7 having a plurality of fixed volume cut-out chambers 6 provided on an outer peripheral portion corresponding to the discharge port 3 so as to be rotatable in the storage space portion 2 and an outer peripheral portion of the rotatable member 7. And an arc-shaped lid 8 disposed immediately above the fixed volume extraction chamber 6 and within a predetermined angle range around the discharge port 3 side, and attached to the rotary shaft 5 at an upper position of the rotary body 7. And the scraping rod 9 protrudes in all directions from the outer peripheral surface. Is composed from a guiding cone 10 Prefecture, as further shown in FIGS. 1 and 3, a casing 4
The auxiliary discharge port (other discharge port) 11 is formed at a position different from the discharge port 3 and immediately below (downstream side) in the rotational direction from the discharge port 3, and the auxiliary discharge port 11 is formed. In the lower edge of the casing 4 corresponding to the
Air jet nozzles 12 for removing the powder particles attached to the inner wall surface are inserted and arranged at a plurality of locations (for example, two locations).

The opposite side of the lid 8 is provided with an opening 13 for guiding the granular material in the storage space 2 into the fixed quantity extraction chamber 6. In addition, in FIG.
A communication port 22 is provided between the hopper 21 and the casing 4, and an upper end of the rotary shaft 5 projects into the hopper 21. At the upper end, a cutting bar 23 for cutting the powder in the hopper 21 is provided.

Therefore, in the above configuration, the powder or granular material such as fly ash that has been put into the casing 4 via the hopper 21 is rotated in a predetermined direction by the rotary shaft 5, but at this time, the powder and granular material is The body 8 is introduced into the metering chamber 6 through an opening 13, ie, the opening 13, and is moved to the opposite side, and is discharged downward by a predetermined amount from an opening at the bottom, ie, the outlet 3. You.

At the auxiliary discharge port 11, air is injected from the air injection nozzle 12 into the fixed amount extraction chamber 6, and fly ash attached to the inner wall surface is removed. At the same time, it is guided to the dust collector 32 via the outlet pipe 31 and collected.

As described above, the auxiliary discharge port 11 is formed at a position different from the original discharge port 3 for supplying the granular material and immediately below in the rotation direction, and the air is supplied to the auxiliary discharge port 11. Since the injection nozzle 12 is inserted and inserted, even when air is injected into the fixed quantity extraction chamber 6, the air does not enter the powder supply pipe connected to the original outlet 3 side, and therefore the powder There is no adverse effect on the flow meter provided in the body supply pipe. That is, the amount of water added to the fly ash becomes accurate, and stable fly ash processing can be performed.

[0019]

As described above, according to the structure of the present invention, the auxiliary discharge port is provided at a position different from the discharge port for discharging the granular material and on the lower side in the rotation direction, and the auxiliary discharge port is provided with air. Even if air is injected into the fixed quantity extraction chamber because the injection nozzle is arranged, the air does not enter the powder supply pipe connected to the original discharge port side, so it is provided in the middle of the powder supply pipe. No adverse effect on the flow meter.

[Brief description of the drawings]

FIG. 1 is a plan view of a main part of an apparatus for quantitatively supplying a granular material according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

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

FIG. 4 is a cross-sectional view of a conventional granular material supply device.

FIG. 5 is a view taken in the direction of the arrows CC in FIG. 4;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Granular material fixed supply apparatus 2 Storage space part 3 Discharge port 4 Cylindrical casing 5 Rotating shaft body 6 Quantitative extraction room 7 Rotary body 11 Auxiliary discharge port 12 Air injection nozzle

Claims (2)

[Claims] 1. A casing having a storage space for powdery and granular material and having a discharge port at the bottom, and a casing disposed at the center of the storage space of the casing and connected to a rotation drive device to rotate and drive. And a rotating body attached to the rotating shaft and rotatable in the storage space and provided with a plurality of fixed volume cut-out chambers on an outer peripheral portion corresponding to the discharge port. In the granular material supply device, another discharge port is provided at a position different from the discharge port of the casing and at a position on the lower side in the rotation direction from the discharge port, and an edge of the casing corresponding to the other discharge port. An air injection nozzle for injecting air to the inner wall surface of the fixed quantity extraction chamber. 2. An apparatus for quantitatively supplying powder and granules according to claim 1, further comprising a lead-out pipe for guiding air injected into another discharge port to the dust collector.