JP2955738B2 - Feeding equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a powder feeding apparatus for discharging powders contained in a storage room, a hopper, a silo and a tank (collectively referred to as a storage room in the specification) from the storage room.

[0002]

2. Description of the Related Art Conventionally, a rotary feeder for feeding powders and granules out of a room is provided on the bottom surface of a storage chamber containing powders and granules, and the powders and granules conveyed by the rotary feeder are discharged outside the room. Devices are known. In this conventional powder feeding apparatus, the powder pressure of the powder and granules in the storage chamber directly acts on the rotary supply plate, whereby the weight of the powder and granules stored by the rotary supply plate changes, and the rotation of the rotary supply plate becomes improper. It had become stable. Further, there is a problem that a large load acts on the rotary supply board, and a large horsepower is required for driving the rotary supply board. This is a problem particularly in hoppers and storage tanks that store large volumes of powder and weigh several tons or more.

[0003]

SUMMARY OF THE INVENTION The problem to be solved by the present invention is to solve these problems of the prior art, to largely avoid the influence of powder pressure, and to enable accurate powder feeding and quantitative feeding. To provide a powder device.

[0004]

According to the structure of the present invention, which solves the above-mentioned problem, a part of the lower side wall of the storage chamber of the fixed bottom wall in which the granular material is stored is opened to form a granular material discharge port. An auxiliary moving means for moving the granular material to the granular material discharge port is provided, a discharge chamber communicating with the granular material discharge port and having an open bottom surface is provided outside a lower side wall of the storage chamber, and a bottom surface of the discharge chamber is provided. A powder / granule transfer path for transferring the powder / granules is provided directly below the opening, and the lower particles are placed in the discharge chamber.
Screw with the screw axis oriented in the transport direction of the body transport path
-A powder feeding apparatus characterized by having a conveyor .
Here, the granular material transfer path may be a conveying path for communication from the storage chamber to the next granular material apparatus, or may be a simple discharge path, or rotate the lower periphery of the storage chamber to remove the granular material. It may be a powdery material conveying path for forwarding. Also, the transfer means of the granular material transfer path is
The transfer method may be a method in which the powder is stored on the upper surface of the conveyor and transferred, or a transfer method using a powder and particle rotating supply plate having a powder and particle storage space on the outer periphery. In addition, methods for moving the granular material in the storage chamber to the discharge port include methods such as powder pressure, inclination of the bottom surface of the storage chamber, forced feeding by internal blades, vibration, and the like.

[0005]

According to the present invention, the granular material in the storage chamber is partially discharged from the granular material discharge port at the lower portion of the storage chamber due to the powder pressure. Most of the weight of the granular material is received at the bottom of the storage room, and the powder pressure on the granular material discharge port of the opening in the side wall acts only smallly, and a large amount of the granular material in the storage room may flow out. Absent. Also, by flowing into the discharge chamber from the powder discharge port and falling downward, the powder pressure in the storage chamber is interrupted, and the powder drops to the lower powder transfer path and is transported in the powder transfer path. Is done. In this way, the effect of powder pressure in the storage chamber is cut off when the powder is transferred to the powder transfer path. I do. In addition, the powder that has flowed into the discharge chamber
Forcibly moved / stirred by the conveyor and stayed
The powder uniformly falls into the lower granular material transfer path without being transported.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. In the present embodiment, a discharge chamber is provided outside the granular material discharge port at the lower part of the storage chamber, and a rotating granular material supply board is provided below the storage chamber, and a plurality of blades are provided on the outer periphery of the granular material supply board. Are provided radially, the blade and the fixed surface plate below the blade, the powder material supply plate outer peripheral side wall and the annular road outer wall ring form a powder material storage space, and the powder material storage space rotates. This is a powder feeding device having a structure of a powder material transfer passage that passes below the discharge chamber, opens a bottom plate in the middle of the rotation trajectory of the blade, and discharges the powder material downward therefrom.

FIG. 1 is a longitudinal sectional view of an embodiment, and FIG.
It is -A sectional drawing. In the figure, 1 is a storage room, 2 is a side wall of the storage room,
Reference numeral 3 denotes a powder outlet of the side wall, 4 denotes a bottom surface of the storage chamber 1, 5 denotes a discharge chamber, 6 denotes a side wall of the discharge chamber, 7 denotes an open bottom of the discharge chamber 5, and 8 denotes a powder supply board. , 9 are blades projecting radially from the outer periphery of the granular material supply plate 8, 10 are fixed bottom plates provided below the blades, 11 are the blade 9, the bottom plate 10, the outer peripheral side wall of the granular material supply plate and the annular path A granular material accommodating space for accommodating a certain amount of granular material 22 formed by outer wall ring 23,
A top plate closing the upper part of the blades 9 along the rotation trajectory, a discharge portion 13 provided at a position outside the storage chamber on the opposite side of the discharge chamber 5, and a discharge opening 14 of the bottom plate 10 forming the discharge portion. , 1
5 is a scraping blade provided at the bottom of the storage chamber 1, 16 is a drive unit for rotating the scraping blade and the granular material supply plate 8, 17 is a screw conveyor of the discharge chamber 5, and 18 is a screw conveyor. Motor 19, a vertically moving gate plate for adjusting the opening area of the granular material discharge port, 20 a vertical operation handle of the gate plate, 21 a discharge chute tube for the granular material dropout port 14, 22 a powder The granular material 23 is an annular road outer wall ring that forms a granular material accommodating space.

In this embodiment, the powder 22 in the storage chamber 1 flows out from the powder discharge port 3 in the side wall 2 of the storage chamber 1 to the discharge chamber 5 by the powder pressure and the scraping blades 15. Powder discharge port 3
The granular material transferred from the container to the discharge chamber 5 falls from the opened bottom surface 7 into the granular material accommodating space 11 between the blades 9 of the granular material supply plate 8 and is supported by the bottom plate 10. The granular material 22 filled in the granular material storage space 11 is circulated on the bottom plate 10 with the rotation of the granular material supply board 8 and falls downward from the granular material dropping port 14 of the discharge unit 13 on the opposite side. Is discharged. Here, the granular material 22 having moved from the granular material discharge port 3 to the discharge chamber 5 falls to the granular material supply plate 8 below. The granular material that has fallen into the granular material supply board 8 is cut off by the lower edge of the side wall 6 of the discharge chamber 5 and the top plate 12, and is fixedly stored in the granular material storage space 11. Even when the granular material 22 is clogged at the granular material discharge port 3 and cannot be dropped and stays, the granular material 22 remaining in the discharge chamber 5 is forcibly moved and stirred by the screw conveyor 17 in the discharge chamber 5. Fall. By means of this screw conveyor 17, the powder 22 from the powder discharge port 3 falls uniformly irrespective of the rotation direction of the powder supply board 8, and is fed forward from the discharge unit 13 to the outside.

Another embodiment (see FIGS. 3, 4, and 5) In the embodiment shown in FIGS. 3, 4, and 5, the powder pressure in the storage chamber is received by an inclined flat plate, from which the powder pressure is forcibly transferred to a powder discharge port. This is an example of discharging the granular material. The structure of the powdery material transfer path and the structure of the discharge chamber are the same as those in the above embodiment. The embodiment shown in FIG. 3 is an example in which a flat-shaped powder receiving plate 30 slightly inclined to the granular material discharge port 3 is provided at the lower portion of the storage chamber 1 and a vibrator 31 is provided on the same powder receiving plate. In this embodiment, the powder pressure in the storage chamber 1 is received by the powder receiving plate 30, a part of which moves to the powder discharge port 3 due to the inclination of the powder receiving plate 30, passes through the discharge chamber 5, and then flows into the powder supply board 8. Fall to
It is rotated and discharged from the discharge unit 13. The pollination plate 30 is easily vibrated by the vibrator 31 so that the powder or granules of the pollination plate 30 can easily flow downward. The embodiment of FIG.
The inside of the pollinating plate 30 of the embodiment is hollow, the upper surface of the pollinating plate 30 is made porous, and a breathable cloth 33 that does not allow the passage of powder is stretched on the upper surface. By sending the air, the upper surface of the dust receiving plate 30 facilitates the movement of the granular material, and together with the vibration of the vibrator 31, further facilitates the movement of the granular material in the storage chamber 1 to the granular material discharge port 3. . The embodiment shown in FIG. 5 has a structure in which a plurality of feed blades 34 each having a radiation blade 34 attached to a rotating shaft 35 are provided below the polluting plate 30 in FIG. 3 and the vibrator 31 is not used.
By rotating the feed blades 34, the powder on the pollination plate 30 is forcibly transferred to the granular material discharge port 3 to secure the granular material discharge port. , 2 are the same as those of the embodiment shown in FIG. By discharging the granular material through the granular material discharge port 3 on the side surface of the storage chamber 1, the high powder pressure in the storage chamber 1 is prevented from directly acting on the granular material transfer path, thereby ensuring high accuracy and high accuracy. Enables feeding. In the figure, 37 is a motor, and 38 is a transmission chain.

[0010]

As described above, according to the present invention, the granular material in the storage chamber is not directly transferred from the bottom opening of the storage chamber to the lower particulate transfer path, but the opening of the side wall of the storage chamber is formed. By discharging the powder from the discharge port and transferring it to the powder transfer path via the discharge chamber, the powder pressure in the storage chamber is shut off at the discharge port / discharge chamber so that it does not act directly on the powder transfer path. In the discharge chamber
Forcibly move powder and granular material from the discharge port with the screw conveyor
· Therefore the reliable discharged stirring, can enable accurate powder feeding.

[Brief description of the drawings]

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

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

FIG. 3 is an explanatory view showing another embodiment of the present invention.

FIG. 4 is an explanatory view showing another embodiment of the present invention.

FIG. 5 is an explanatory view showing another embodiment of the present invention.

[Description of Signs] 1 Storage room 2 Side wall 3 Powder discharge port 4 Bottom 5 Drainage chamber 6 Side wall 7 Bottom 8 Powder supply board 9 Blade 10 Bottom 11 Powder storage space 12 Top plate 13 Discharge unit 14 Powder Body dropout 15 Raiding blade 16 Drive unit 17 Screw conveyor 18 Motor 19 Gate plate 20 Vertical operation handle 21 Discharge chute tube 22 Powder and granular material 23 Road outer wall ring 30 Dust receiving plate 31 Vibrator 32 Hole 33 Cloth 34 Radiating blade 35 Rotating shaft 36 feed blade 37 motor 38 transmission chain

Claims (1)

(57) [Claims] 1. An auxiliary moving means for opening a part of a lower side wall of a storage chamber of a fixed bottom wall containing a granular material and serving as a granular material discharge port, and moving the granular material to the granular material discharge port. A discharge chamber communicating with the powder discharge port and having an open bottom surface outside the lower side wall of the storage chamber, and transferring the powder particles directly below the opening at the bottom surface of the discharge chamber. Is installed , and the lower particles
Screw with the screw axis oriented in the transport direction of the body transport path
-A powder feeding device characterized by having a conveyor .