JP2004276982A - Powder reservoir - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a powder reservoir which satisfactorily stores powder and discharges the same satisfactorily with no attachment of the same to an inside wall. <P>SOLUTION: The lower part of the tank main body 2 where powder is stored is formed with a cone part 6 whose diameter decreases towards the lower side. A plurality of nozzles 7, 7, 7 are provided in the cone part 6 for blowing out air along the inside wall of the part 6. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a powder storage device capable of storing powder obtained by pulverizing concrete or powder such as coal and lime.
[0002]
[Prior art and its problems]
Conventionally, when crushing concrete at a construction site, etc., it is necessary to construct large-scale facilities in order to store the crushed concrete well, and to store coal, lime, etc. Also required large-scale facilities.
[0003]
[Patent Document 1]
JP-A-61-115875
[Means for Solving the Problems]
The present invention has been devised in view of the above-mentioned conventional problems, and does not provide a powder storage device that is movable, can store powder well, and can discharge well as needed. The first gist of the invention is that a cone portion having a diameter reduced downward is formed in a lower portion in a tank body capable of storing powder, and the cone portion has That is, a nozzle for blowing air is provided along the inner wall.
A second point is that a discharge port divided into two or more is provided at a lower end of the cone portion.
A third gist is that a measuring device capable of measuring the amount of discharged powder is provided outside or inside the tank body.
[0005]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows a powder storage device according to a first embodiment. In the drawing, a powder storage device 1 includes a cylindrical tank body 2 extending in a vertical direction. Is provided with a back filter 3 protruding upward, a level meter 4 is provided on a ceiling surface of the tank body 2, and a ladder 5 is provided on a side surface of the tank body 2 in a vertical direction. Have been.
Further, a cone portion 6 whose diameter is reduced toward the lower side is formed in a lower portion in the tank main body 2, and the cone portion 6 has a plurality of jetting nozzles 7, 7, 7 along the outer periphery. Is provided. Note that the jetration nozzles 77, 7, 7 are piped such that compressed air is supplied from a compressor.
[0006]
A bifurcated discharge port 8 is provided at the lower part of the cone part 6 and is suspended in a bifurcated manner. A stirrer 9 is provided at the lower end of the bifurcated discharge port 8, and a manual gate is provided below the stirrer 9. 10 are provided.
Below the manual gate 10, a drawer screw conveyor 11 provided with a motor 11a is provided, and the other end of the drawer screw conveyor 11 extends outward from the tank body 2.
A vertical screw conveyor 12 extending in the vertical direction is linked to an outer end of the drawer screw conveyor 11, and the vertical screw conveyor 12 is provided outside the tank body 2 in a vertical direction. 12a.
An inclined pipe 13 is connected to the upper end of the vertical screw conveyor 12 in an oblique manner, and the lower end of the inclined pipe 13 is connected to a measuring device 15 provided in a suspended manner on a gantry 14. A flexible container loading hood 17 is provided at a lower end of the weighing device 15, and a storage bag 18 can be installed below the flexible hood 17.
[0007]
For example, pulverized concrete powder is pumped together with the pumping air, and is injected into the tank body 2 from the ceiling side of the tank body 2, and at this time, a bag provided at the upper part of the tank body 2 is provided. The filter 3 can filter out dust and discharge only air.
In this way, the concrete powder is stored in the tank body 2, and the powder in the tank body 2 is appropriately discharged to the outside. By vibrating air along the inner wall surface of the cone portion 6 to vibrate and prevent powder from adhering to the inner wall surface of the cone portion 6, An air layer is formed along the inner wall surface of the cone portion 6 and a good aeration effect can be obtained while temporarily reducing the frictional force between the inner wall of the cone portion 6 and the powder. The inner wall of the portion 6 and the inner wall of the tank main body 2 are preferably prevented from adhering to the inner wall.
For this reason, the powder can flow down well from the cone portion 6, and furthermore, at the lower end of the cone portion 6, two discharge ports 8 are formed in a forked shape. The better the powder can flow down.
[0008]
Further, by operating the stirring device 9, the powder can be more preferably prevented from adhering and discharged.
When the manual gate 10 is open, the powder is gradually drawn out of the tank body 2 by the lower screw conveyor 11, and further, the vertical screw conveyor 12 is driven by the drive of the motor 12a. The powder is moved upward by the vertical screw conveyor 12, flows downward through the inclined pipe 13, passes through the measuring device 15 provided on the gantry 14, and accurately measures the amount of the powder by the measuring device 15. And is packed in the storage bag 18. The storage bag 18 can be pulled out by a forklift 19 and transported on a truck or the like. The pedestal 14 is also provided with an air vent 16 for removing dust.
[0009]
The tank main body 2 and the gantry 14 of the powder storage device 1 are formed in a shape that can be transported separately by a truck or the like, and can be easily carried into and installed on a construction site such as a mountain area, By installing such a powder storage device 1 on site, the pulverized concrete powder can be stored well, and can be measured and carried out by truck or the like as appropriate.
In addition, not only concrete powder but also coal powder obtained by pulverizing coal and powder such as calcium carbonate and lime are similarly stored and discharged without adhering, weighing, and measuring accurately. The quantity can be carried out.
[0010]
Next, a second embodiment shown in a front view of FIG. 2 and a side view of FIG. 3 relates to a powder storage device 21 having a built-in measuring device.
In the powder storage device 21, a plurality of back filters 23, 23, 23 are provided on an upper part of a tank body 22, and a measuring device 24 having a measuring tank 25 is provided below the back filters 23, 23, 23. That is, the measuring device 24 and the measuring tank 25 are built in the tank main body 22. At the lower end of the measuring tank 25, a discharge chute 26 that opens toward the outside of the tank body 22 is provided.
[0011]
A cone portion 27 is formed at a lower portion in the tank main body 22. The cone portion 27 is provided with a plurality of jetting nozzles 7, 7, 7 similarly to FIG. Is configured to be able to blow out vibration air.
Further, at the lower end of the cone portion 27, two bifurcated discharge ports 28 are vertically provided in a bifurcated manner. A gate 29 is provided at the lower end thereof, and a lower screw 30 is further disposed below the gate 29.
The lower screw 30 extends in the horizontal direction, and the other end is connected to a vertical screw conveyor 32 disposed in the tank body 22 in the vertical direction.
An air compressor 31 for feeding air to the jet nozzles 7, 7, 7 is provided on the bottom inside the tank body 22. A door 35 is provided on the bottom side of the tank body 22.
[0012]
The upper end of the vertical conveyor 32 extends to the position of the measuring device 24, and is configured so that powder can be discharged from the upper end of the vertical screw conveyor 32 into the measuring tank 25.
When the powder is put into the measuring tank 25 through the vertical screw conveyor 32, the measuring tank 25 moves downward due to the weight of the powder, but the amount of movement is electrically detected by the measuring device 24. It is configured to be weighed.
After being weighed, the powder is discharged to the outside from the discharge chute 26, and if the above-described storage bag 18 or the like is arranged outside, a predetermined amount of the measured powder can be put into the storage bag 18. It becomes.
[0013]
In this example, it is not necessary to connect the gantry 14 provided with the separate weighing device 15 to the tank main body 2, and if only the tank main body 2 is carried in and installed on the site, the powder stored therein can be reduced. When discharging to the outside, it is possible to discharge while weighing well.
[0014]
In addition, such powder storage devices 1 and 21 can also store, for example, powder as livestock feed such as soybean flour, and measure and discharge an appropriate amount of the powder to the outside so that other feeds can be stored. Can be set accurately. It should be noted that other powders can be well stored inside, and can be measured and discharged as needed.
[0015]
【The invention's effect】
In the powder storage device of the present invention, a cone portion having a diameter reduced downward is formed in a lower portion in the tank body capable of storing the powder, and the cone portion is formed along the inner wall of the cone portion. The nozzle that blows out the air allows the powder to vibrate satisfactorily in the tank body by the air that is blown out from the nozzle, preventing the powder from adhering. However, by forming an air layer on the inner wall surface of the cone part, the powder can flow down while discharging, etc., while temporarily lowering the frictional force during discharge, and a good aeration effect is obtained. It will be something that can be done.
[0016]
In addition, the lower end of the cone portion is provided with a discharge port that is divided into two or more, so that the discharge port that is divided into two or more allows the powder to flow down to the lower side well, Adhesion is prevented.
[0017]
In addition, since a measuring device capable of measuring the amount of discharged powder is provided on the outside or inside of the tank main body, when discharging the powder stored in the tank main body to the outside, the measuring device is used. By measuring, the amount of discharge can be made accurate.
[Brief description of the drawings]
FIG. 1 is a schematic configuration diagram of a powder storage device of a first embodiment.
FIG. 2 is a front view of a powder storage device according to a second embodiment.
FIG. 3 is a side view of a powder storage device according to a second embodiment.
[Explanation of symbols]
1,21 powder storage device 2,22 tank body 3,23 back filter 4 level meter 6,27 cone section jetration nozzle 8,28 fork discharge port 9 stirrer 10,29 gate 11 draw screw conveyor 11a motor 12 vertical Screw conveyor 12a Motor 13 Inclined pipe 14 Stand 15 Meter 16 Air vent 18 Storage bag 19 Forklift 24 Meter 25 Meter tank 30 Lower screw 31 Air compressor 32 Vertical screw conveyor

Claims (3)

At the lower part in the tank body capable of storing the powder, a cone part having a diameter reduced downward is formed, and the cone part is provided with a nozzle that blows air along the inner wall of the cone part. A powder storage device. The powder storage device according to claim 1, wherein a discharge port divided into two or more is provided at a lower end of the cone portion. 3. The powder storage device according to claim 1, wherein a measuring device capable of measuring an amount of the discharged powder is provided outside or inside the tank body. 4.

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