JPS606019Y2 - Quantitative discharge device for powder and granular materials - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a quantitative discharge device for powder and granular materials.

Conventionally, screw feeders and rotary feeders have been used as devices for quantitatively discharging powder and granular materials, but when discharging powder and granular materials that have caking properties or strong adhesiveness, the granular materials tend to form crosslinks in the hopper. Another drawback is that the powder particles adhere to the screw or the rotating blades, making it difficult or impossible to discharge the powder particles in a fixed amount.

This invention was devised to eliminate the above drawbacks.
This will be explained below with reference to FIGS. 1 to 4.

As shown in Fig. 1, a rotating shaft 2 extending along its axis is rotatably supported inside a vertically arranged cylindrical hopper 1, and a plurality of stirring rods 3 are mounted up and down on the upper part of this shaft 2. Fix them radially at appropriate intervals.

Since the rotating shaft 2 is rotated by the motor 14 via the speed reducer 13, the powder and granular material filled inside the hopper 1 is stirred by the stirring rod 3.

In the lower part of the hopper 1, a spring impeller 7 is fixed to the shaft 2, and around this impeller 7, a large number of vertical blades 4 are provided at predetermined intervals along the circumferential direction so that they are adjacent to each other. A large number of pockets opening upward are defined by the blades 4, the bottom plate of the hopper, and the inner circumferential wall.

Further, one discharge port 8 is provided on the bottom plate of the hopper and communicates with the pocket, and a gut gate 1 is provided to open and close the discharge port 8.
0 is set.

A partition plate 5 that simultaneously covers the upper openings of a plurality of consecutive pockets is mounted opposite to and above the discharge port 8, and an air blowing hole 12 is bored in the lower surface of the partition plate 5, so that air sent by a device (not shown) can be It is made to eject in the direction of the discharge port 8 through the pocket.

The partition plate 5 is also provided with a scraping plate 6 for completely scraping up the powder on the impeller 7 and guiding it into the surrounding pockets.
is attached.

A scraping plate 9 is attached to the rotating shaft 2 at the lower part of the impeller 7, and the scraping plate 9 is inserted into the lower part of the impeller 7 from the gap 15 between the bottom surface of the hopper 1 and the lower surface of the blade 4 (see FIG. 2). The powder and granular material that enters is returned to the outer periphery and guided to the discharge port 8.

The cut gate 10 is opened and closed by an air cylinder 11.

Therefore, the rotating shaft 2 is connected to the motor 14 via the reducer 13.
Since the hopper is always rotated at a constant speed, the powder in the hopper 1 is stirred by the stirring rod 3 attached to the rotating shaft 2 and maintains its fluidity.

To discharge the powder, the cut gate 10 is opened and the rotating shaft 2 is rotated at a constant speed.

Then, a large number of pockets, which were formed by vanes 4 arranged at equal intervals around the impeller 7, were each filled with powder and granules, and the upper opening of each pocket was covered by a partition plate 5. By communicating with the discharge port 8 in this state, a fixed amount is discharged.

By blowing air from the air blowing hole 12 provided on the lower surface of the partition plate 5 through the pocket toward the discharge hole 8, even sticky powder solidifies or adheres to the blade 4 and is removed from inside the pocket. Since it prevents it from remaining in the water, it is possible to discharge it in fixed amounts.

Further, the scraping plates 6 and 9 can guide the powder and granular material in the hopper 1 to the outer peripheral portion and completely discharge it.

Further, by closing the cut gate 10, it is possible to stop discharging the powder or granular material even if the powder or granular material in the hopper 1 is stirred by the stirring rod 3 and its caking or adhesion is prevented.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which Fig. 1 is a partially cutaway slope view, Fig. 2 is a vertical sectional view, Fig. 3 is a sectional view taken along the line ■-■ in Fig. 2, and Fig. 4. is a sectional view taken along the third line ■-■. 1: Hopper, 2: Rotating shaft, 3: Stirring bar, 4: Blade, 7:
Impeller, 5: Partition plate, 8: Discharge port, 6: Scraping plate, 9
: Scraping plate, 10: Cut gate, 11: Air cylinder, 12: Air outlet, 13: Reducer, 14: Motor.

Claims (1)

[Scope of utility model registration request] A rotating shaft extending along the axis of the vertically arranged cylindrical hopper and rotatably driven by a drive source is rotatably supported, and a plurality of stirring rods are provided on the upper part of the rotating shaft, and the above-mentioned An impeller is provided at the lower part of the rotating shaft, and a large number of vertical blades are provided around the impeller at predetermined intervals along the circumferential direction, so that adjacent blades and the bottom plate and inner circumferential wall of the hopper are separated. The bottom plate of the hopper is provided with a discharge port that communicates with the pockets, and a cut gate is provided to open and close the discharge port. A method for quantifying powder and granular material, characterized in that a partition plate is fixed to cover the upper openings of a plurality of consecutive pockets at the same time, and an air blowing hole is provided on the lower surface of the partition plate for blowing out air toward the above-mentioned discharge port. Ejection device.