JPS6260018B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automatic quantitative extraction device for a combustion aid used for combustion in a heating furnace, for example, in an apparatus for analyzing metals by heating and melting various metals in a heating furnace. It is.

As this type of combustion improver, granular or powdered materials such as tungsten are generally used, but the quantitative extraction of this combustion improver has conventionally only been carried out by manual operations. In other words, the worker held a measuring cup in his hand and scooped out the combustion improver from the container one by one. However, the drawback was that the work itself was primitive and extremely inefficient.

In view of these conventional drawbacks, the present invention aims to provide a fixed quantity extraction device that can automatically and reliably extract a fixed quantity of a combustion improver.

Hereinafter, embodiments of the present invention will be explained based on the accompanying drawings. Figures 1 and 2 show an automatic quantitative dispensing device that the inventor devised and prototyped before the completion of the present invention. .

First, the device shown in FIG. 1 will be described. Reference numeral 1 denotes a cylindrical drum with a bottom, and a plurality of measuring cups 3 are embedded in the bottom 2 of the drum. A shaft 4 is fixed to approximately the center of the bottom 2 of the drum 1, and the drum 1 is arranged so that the shaft 4 is vertical. 1 is configured to rotate. Two fixed partition plates 6 are positioned within this drum 1 with their lower ends close to the bottom 2. Therefore, when the combustion improver 7 is placed in one of the internal spaces of the drum 1 divided by the two partition plates 6 and the drum 1 is rotated by the motor 5, a predetermined amount is placed in each measuring cup 3. This leaves the combustion aid 7 remaining. Thereafter, by opening a shutter (not shown) provided at the bottom of each measuring cup 3, the combustion improver 7 can be taken out in fixed amounts. According to this device, the combustion improver can be taken out automatically and is extremely efficient. However, in order to accurately take out the amount, the lower end of the partition plate 6 must be placed close to the bottom 2 of the drum 1, and therefore, the combustion improver 7 is often present between the lower end of the partition plate 6 and the bottom 2 of the drum 1. There was a drawback that the drum 1 could become jammed, stopping the rotation of the drum 1, and in some cases, the device itself could be damaged.

The device shown in FIG. 2 was devised to solve these drawbacks. 8 in the figure is a circular disk,
A shaft 9 is fixed to this disk 8, and this shaft 9
The disc 8 is configured to be rotated by a motor 10 which is interlocked with the motor 10 . This disk 8
is installed in the container 11 that stores the combustion improver 7,
A measuring cup 12 that opens in the direction of rotation of the disk 8 is attached to the side thereof. A saucer 13 is provided in the container 11,
The opening of this saucer 13 is above the combustion improver 7,
It is located near the rotation locus of the measuring cup 12. Therefore, when the disk 8 is rotated by the motor 10, the measuring cup 12 sinks into the combustion improver 7 and scoops out a predetermined amount of the combustion improver 7, and discharges the scooped-out combustion improver 7 into the saucer 13. This makes it possible to take out a fixed amount of 7. According to this device, unlike the device shown in FIG. 1, there is no entrainment of the combustion improver and there is no possibility that the device will become inoperable. However, in the stationary combustion improver 7,
Since the measuring cup 12 must be forcibly inserted, a considerable amount of power is required. In addition, since the measuring cup 12 always rotates along a fixed trajectory and scoops up the combustion improver 7 only from a certain limited area, the surrounding combustion improver 7 does not completely fall into the space after scooping up. Eventually, a situation occurred in which the fuel was scooped out again, and the amount taken out was not constant, and in the end, a large amount of combustion improver 7 remained at the corners of the container 11, which was a drawback.

The device according to the present invention shown in FIGS. 3 and subsequent figures completely solves these drawbacks of the prototype device.
In the figure, reference numeral 14 denotes a cylindrical drum configured in a completely sealed manner in order to store the combustion improver 7 inside.
5 and one side wall 16 are made of stainless steel, and the other side wall 17 is made of transparent glass. A rotating shaft 18 is fixed to the center of one side wall 16 with a bolt or the like, and also to the center of the other side wall 17.
A rotating shaft 20 is fixed via an insulator 19. Both rotating shafts 18 and 20 have a plurality of bearings 21
The rotary shaft 18 is horizontally supported on the machine frame 22 by . 24
is a measuring cup fixed to the inner surface of the drum 14, and is open in the direction of rotation of the drum 14. This measuring cup 24 can also be constructed so that various containers can be prepared and replaced as necessary. Similarly, a saucer 25 that opens facing the measuring cup 24 is fixed to the inner surface of the drum 14 at a position forward of the measuring cup 24 in the rotational direction.
is in communication with a combustion improver outlet 26 provided in the circumferential portion 15 of the drum 14 . Reference numeral 27 indicates an insertion port for the combustion improver 7 provided on the circumferential portion 15 of the drum 14. When the device is in operation, the insertion port 27 is closed with a lid (not shown). 28 and the combustion improver 7 is inserted, the combustion improver 7 is inserted up to approximately half of the drum 14, and the structure is such that no more combustion improver 7 is inserted. Reference numeral 29 denotes a conductive disk disposed within the drum 14 and fixed to one rotating shaft 20. Conductive wires 30 are connected to the bearing 21 on this rotary shaft 20 side and the bearing 21 on the other rotary shaft 18 side, and these both conductive wires 30 connect to the alarm 31.
When the amount of combustion improver 7 in the drum 14 becomes low enough to no longer touch the disk 29, an alarm 31 is configured to notify that there is little left. 32 is a cam plate fixed to the rotating shaft 18, and a recessed portion 33 is provided at one location on the circumference of the cam plate. A protrusion 35 of a rotation speed detector 34 is always in contact with the cam plate 32, and the drum 1
It is configured to detect a rotation speed of 4. Note that 36 in the figure is a chute provided below the drum 14.

Next, to explain the effect, first, the insertion port 2
7, a predetermined amount of combustion improver 7 is inserted into the drum 14. Thereafter, when the drum 14 is rotated by the motor 23, the measuring cup 24 sinks into the combustion improver 7 and scoops up the combustion improver 7, as shown in FIG. 6a. In this case, as the drum 14 rotates, the combustion improver 7 also rotates, and then falls due to its own weight, so it is as if the combustion improver 7 is being sprinkled onto the measuring cup 24 from above. This makes it possible to reliably scoop up the combustion improver 7 without requiring a large amount of power unlike the prototype device shown in FIG. As shown in FIG. 6b, when the measuring cup 24 is completely removed from the combustion improver 7, at that point, the combustion improver 7 that has been scooped out
The excess will fall under its own weight and be placed in measuring cup 2.
4, only a predetermined amount remains, and then, as shown in FIG.
As shown in , under the action of centrifugal force, measuring cup 2
The combustion improver 7 in the combustion chamber 4 is released into the tray 25, and is taken out from the outlet 26 to the chute 36 and from the chute 36 to the outside of the apparatus. In this case, drum 1
The rotation speed of 4 is an extremely important factor, and as a result of experiments, it has been found that the optimum speed is one rotation per 1 to 2 seconds. In this way, the combustion improver 7 is automatically taken out in fixed amounts, and during this operation, the detector 34 detects the rotational speed of the drum 14 via the protrusion 35 that is in contact with the cam plate 32. So,
Based on the detected rotational speed, the total amount of combustion improver 7 taken out of the device can be easily determined. Further, unlike the prototype device shown in Fig. 2, a large amount of combustion improver 7 does not remain, and when the remaining amount falls below a predetermined amount, the alarm 31 is activated to notify that the remaining amount is low. become.

In the embodiment, the drum 14 is shown to have a cylindrical shape, but it does not necessarily have to be cylindrical. Even if the center of rotation is drum 1
It is not necessarily necessary to align with the axis of No. 4, and it is possible to carry out the operation even if the axis is slightly shifted. Moreover, the outlet 26 and the insertion opening 27 for the combustion improver 7 do not necessarily have to be provided in the circumferential portion 15 of the drum 14. However, if the drum 14 is made into a cylindrical shape, with its axis being the center of rotation, and the outlet 26 is provided in the circumferential portion 15, not only will it be easier to manufacture the device, but also the combustion improver 7 will be easier to take out. This has the advantage that work can be carried out smoothly.

As is clear from the above description, the automatic fixed-quantity dispensing device according to the present invention has a drum containing a combustion improver disposed almost horizontally, and a measuring cup provided on the inner surface of the drum while rotating the drum. Since the fuel is scooped out, the fuel is sprinkled onto the measuring cup from above, and of course there is no drawback of the fuel being caught in the measuring cup as shown in the prototype device shown in Figure 1. As with the prototype device shown in Figure 2, reliable operation is possible without requiring large amounts of power. moreover,
Since the combustion improver is constantly stirred by the drum, it is possible to automatically and accurately take out a predetermined amount at a time without leaving a large amount of combustion improver in the drum.

[Brief explanation of the drawing]

The drawings are for explaining the automatic quantitative extraction device for combustion improver for metal analyzers according to the present invention.
2 is a schematic perspective view showing a prototype device before the present invention is completed, FIG. 3 is a partially cutaway front view showing an example of the device of the present invention, and FIG. FIG. 5 is a sectional view taken along the - line in FIG. 3, and FIGS. 6 a, b, and c are explanatory diagrams showing the operation of the apparatus of the present invention. 7... combustion improver, 14... drum, 24... measuring cup, 25... saucer, 26... outlet.

Claims (1)

[Scope of Claims] 1. A drum containing a combustion improver is disposed so that its axis is substantially horizontal, and is configured to rotate in the circumferential direction, and a drum is provided on the inner surface of the drum. A measuring cup that opens in the direction of rotation of the measuring cup, and a saucer that opens facing the measuring cup in front of the measuring cup in the rotational direction, and the saucer is connected to a combustion improver outlet provided in the drum. An automatic quantitative extraction device for a combustion improver for a metal analyzer, characterized in that: 2. Automatic quantitative extraction of a combustion improver for a metal analyzer according to claim 1, wherein the drum is cylindrical and configured to rotate around its axis. Device. 3. The automatic quantitative take-out device for a combustion improver for a metal analyzer according to claim 1 or 2, wherein the combustion improver outlet is provided on the periphery of the drum.