JPH0349854B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a powder feeder for supplying and discharging various powders and granules in fixed amounts from storage chambers, containers, etc.

(Prior technology) A conventional powder feeder has a rotary disk installed at the bottom of the storage chamber with a part exposed outside the storage chamber, and an annular groove is provided on the rotary disk, and the powder is fed into the groove. The granules are stored, rotated, and scraped out with a scraper on the outside to be discharged.

(Problems to be Solved by the Invention) This conventional powder feeder requires a stirring blade to fill the grooves of the rotary disk with powder, and has the problem that it is difficult to discharge the entire amount.

In addition, the motor that drives the rotary disk is located below the center of the storage chamber, and there is a problem in that it is difficult to drop the powder from directly below the center of the storage chamber.

(Means for Solving the Problems) The present invention aims to provide a powder feeder of a new concept that solves the above problems with a simple structure, and its gist is that the lower cylindrical portion of the storage chamber is A rotary table is provided with an opening in the center of the bottom wall to serve as a powder discharge port, a powder drop port on the outer periphery above the bottom wall, and a vertical annular partition extending to the bottom wall of the cylindrical portion on the back surface. An annular cell space is formed by the back surface of the rotary table, the partition wall, the bottom wall of the storage chamber, and the side wall of the cylindrical portion, and a scraper that hangs down into the cell space is attached to the back surface of the rotary table. Part of the partition is opened to communicate with the powder discharge port, and the powder falling from the powder discharge port is discharged from the opening of the annular partition directly below the center of the storage chamber, and further into the center of the bottom of the storage chamber. A powder feeder is characterized in that a rotary table driving motor is enclosed within a supported cone.

It goes without saying that the number of openings in the powder drop opening, scraper, and annular partition wall may be one or more.

(Function) In this invention, the powder and granules stored in the lower cylindrical part of the storage chamber fall from the powder and granule falling port of the rotary table, are filled in the annular cell space below, and the powder and granules fall as the rotary table rotates. The mouth moves and fills the entire fixed annular cell space. On the other hand, when the rotary table rotates, the powder and granules filled in the annular cell space are scraped off by the scraper provided on the back of the rotary table and discharged from the opening in the partition wall, and the powder and granules are discharged from the granule discharge port provided in the cylindrical part. It is discharged from. In this way, the granular material falls without rotating and moving, and is scraped off at that position by the rotating scraper. The powder and granular material housed in the cylindrical portion is stirred by the shearing force generated by the rotation of the rotary table and the impact of falling from the powder and granular material falling port. The rotary table is rotated by a motor with a built-in cone. Further, the powder scraped by the scraper and falling from the opening of the annular partition falls directly below the center of the storage chamber.

(Example) The embodiments shown in the drawings will be described in detail below.

First Embodiment (See Figures 1 to 3) In the first embodiment shown in Figures 1 to 3, an opening serving as a powder discharge port 4 is provided in the center of the bottom wall 3 of the lower cylindrical portion 2 of the storage chamber 1. Also, the annular partition wall 6 provided on the back surface of the rotary table 5 is an example in which the annular partition wall 6 is provided on the inside. In the figure, 7 is an annular cell space, 8 is a powder falling port of the rotary table 5, 9 is a scraper, 10 is an opening in the annular bulkhead 6, 12 is a cone, and 13 is a motor built in the cone, which is the rotary table. Exterminate 5. 14 is cone 12
15 is a chute.

In this embodiment, the powder and granules in the storage chamber 1 are cone 12.
are guided by the granule material, and are introduced into the lower cylindrical portion 2, and fall from the powder drop port 8 into the annular cell space 7, through the opening 10, and the powder discharge port 4 into the chute 15.
It is more excreted.

(Effects of the Invention) As described above, according to the present invention, with a simple structure, it is possible not only to cut out the powder from the fixed quantity supply storage chamber without moving the powder or granules much, but also to easily discharge the entire amount from the storage chamber.

However, since the motor is built into the cone inside the storage chamber, the space occupied by the motor and drive mechanism can be reduced, and since it is not located below the storage chamber, it is easy to drop the powder directly below the center of the storage chamber. ,
Making it easy to use.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view showing a first embodiment of the present invention;
Figure 2 is a cross-sectional view along the line of Figure 1;
The figure is a cross-sectional view along the line of FIG. 1: Storage chamber, 2: Lower cylindrical part, 3: Bottom wall, 4: Powder discharge port, 5: Rotary table, 6: Annular partition,
7: Annular cell space, 8: Powder fall port, 9: Scraper, 10: Opening.

Claims (1)

[Claims] 1 The center of the bottom wall of the lower cylindrical portion of the storage chamber is opened to serve as a powder discharge port, and a powder drop port is provided on the outer periphery above the bottom wall, and an annular shape extending to the bottom wall of the cylindrical portion is provided on the back surface. A rotary table with a vertical partition wall was provided, and an annular cell space was formed by the back surface of the rotary table, the partition wall, the bottom wall of the storage chamber, and the side wall of the cylindrical portion, and a ring-shaped cell space was further formed on the back surface of the rotary table hanging down into the cell space. At the same time as attaching the scraper, a part of the advancing side partition of the scraper is opened to communicate with the powder discharge port, and the powder falling from the powder discharge port is discharged from the opening of the annular partition directly below the center of the storage chamber. A powder feeder further comprising a rotary table drive motor enclosed within a cone supported at the lower center of the storage chamber.