JPH0625236U - Powder feeder - Google Patents

Abstract

(57) [Summary] (Correction) [Structure] The vibrator 3 is attached to the hopper type body 1 and supported so that it can swing up and down. Inside, the contents are splashed up near the discharge port. An agitator 4 having a propeller that rotates like this and a scraping machine having a blade that rotates so as to pass near the wall surface are provided. [Effect] Even powder having extremely low fluidity can be smoothly dropped and supplied in fixed amounts.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a powder supply device used for filling a container with powder having extremely low fluidity for transfer or supplying it to a device for performing various processes.

[0002]

[Prior art]

 For example, iron oxide powder, which is a raw material for the manufacture of ferrite magnets, has poor fluidity among various powders, and when a certain amount is supplied to the furnace for melting or sintering, In many cases, it is difficult to work smoothly because a bridge is created on the inside or adheres to the inner surface.

A device such as a screw conveyor may be used to handle such a powder having a low fluidity, but in the case where the powder is simply supplied by using gravity, a simpler device is used to make it in time. There is also the problem of how to supply to the conveyor itself.

[0004]

[Problems to be solved by the device]

 An object of the present invention is to provide a powder feeder suitable for use in the above situations.

[0005]

[Means for Solving the Problems]

 As shown in FIG. 1, the powder feeder of the present invention has a hopper type main body (1) having a discharge hole (6) at its lower end and a spring (1) with an intermediate spring. A plurality of, in practice, three support legs (2) for supporting the vertical swinging and at least one vibrator plate fixed to the outside of the main body (1) and vibrating it. (3a) and a stirrer having a rotating shaft (41) on the central axis of the main body (1) and a propeller (42) provided with a twist at the lower end so as to flip the contents upward. ), And a scraper (5) equipped with a blade (52) that rotates about the same rotary shaft (51) as the agitator (4) and that is in close contact with the inner surface of the main body but does not contact. The rotating shaft extends upward and is connected to a driving means (not shown) such as a motor via a speed reducer or the like.

The hopper type main body is made of SUS304, for example, and its taper is preferably within 35 ° with respect to the vertical axis, and preferably within 28 °. Its inner wall should be mirror-finished.

One aspect of this device is that the blade (52) bolts (not shown) the pipe (51) fitted to the agitator shaft (41) by the support arm (53). Therefore, it is a type that is integrally attached.

Another and preferred embodiment is a type in which the propeller (42) and the blade (52) are connected to separate drive means by concentric double shafts, and rotate in opposite directions, but at different rotational speeds. It is a thing.

The vibrator plate (3a) has a vibrating side plate (not shown) in which a loose hole and a pin (not shown) are interposed so that vibration can be applied in the radial direction and / or the circumferential direction of the main body (1). 3b) and vibrator means (3) consisting of a vibrating body (3d) for vibrating the vibrating ball (3c) are connected to the vibrating side plate. The vibrator means (5) may be constituted by directly contacting the vibration generating means such as an air hammer with the vibrator plate (3a).

[0010]

[Action]

 The powder put into the hopper type body (1) tends to form a bridge on the discharge port (6) due to poor fluidity. Therefore, by rotating the stirrer (4) and moving the powder upward with the propeller (42), the bridge is broken and the powder is smoothly dropped to the discharge port by its own weight. The powder around the bridge, which tends to be at both ends, is supplied by rotating the blade (52), scraping it from the inner wall of the hopper type body, and sending it to the discharge port (6) by the propeller (42).

On the other hand, the powder adhered to the inner wall of the main body (1) when the operation is stopped is separated from the wall surface and dropped by vibrating the main body (1) by the vibrator (3) to move up and down. Or at least it will be easier to scrape with a blade. Therefore, the adhesion of powder and the formation of bridges can be reliably prevented.

As can be understood from the above description, the propeller may be attached to the intermediate portion of the rotating shaft, and the blades may be attached to any number such as two blades or three blades symmetrically.

[0013]

[Effect of device]

 Combined with the above-mentioned actions, even powder with extremely low fluidity can be smoothly supplied without stagnation in the hopper. In this way, it is possible to supply a fixed amount.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view illustrating the structure of a powder feeding device of the present invention, with some supporting legs removed.

2 is a plan view of the apparatus of FIG.

[Explanation of symbols]

 1 Main body 2 Support leg 3 Vibrator 4 Stirrer 5 Scraper 6 Discharge port

Claims (3)

[Scope of utility model registration request] 1. A hopper-type main body (1) having a discharge hole (6) at its lower end, a plurality of support legs (2) for supporting the main body so as to allow vertical swing, and at least giving vibration to the main body. A propeller (42) having one vibrator means (3), a rotary shaft (41) on the central axis of the main body, and at least a lower end provided with a twist for flipping the contents upward.
A powder supply consisting of a stirrer (4) equipped with a stirrer (5) and a scraper (5) equipped with a blade (52) that rotates around the same rotary shaft (51) as the stirrer and that is close to the inner surface of the main body but does not contact. apparatus. 2. The blade (52) is a support arm (53).
The powder feeder according to claim 1, which is integrally attached to the shaft (41) of the stirrer by means of. 3. A powder feeder according to claim 1, wherein the propeller (42) and the blade (52) are rotated independently by concentric double shafts.