JPS6032598Y2 - Fluorescent X-ray continuous observation device for powder samples - Google Patents

Description

[Detailed description of the invention] For example, in the process of blending raw materials for cement, it is necessary to analyze the components of each raw material and determine the blending ratio.

A fluorescent X-ray analyzer is used for this analysis, but in order to continuously blend a large flow of raw materials, the fluorescent X-rays must be continuously observed.

In this case, it is necessary not only to keep the density of the powder sample constant and to shape the surface into a smooth plane, but also to prevent the sample from remaining in the observation section and losing representativeness due to sampling.

The present invention provides a continuous fluorescent X-ray observation device for powder samples having such a function.

Figure 1 is a longitudinal cross-sectional view of the embodiment of the present invention, and Figure 2 is A of Figure 1.
-A sectional view, FIG. 3 is an enlarged view of a part of FIG. 1, and FIG. 4 is a view taken along the line B-B in FIG. 3.

In this way, a conveyor 3 such as a wheel driven with a shaft 2 in the direction of the arrow p is housed in the container 1, and a hopper 4 is provided in the upper part of the container to continuously supply the powder sample onto the conveyor 3. This is provided.

The upper surface of the container 1 is a shaping plate 5 disposed almost on the water surface, an X-ray window 6 is provided on this shaping plate, the conveyor 3 is disposed below the window 6, and the hopper 4 and the window 6 are connected to each other. The lower surface 7 of the shaping plate in between is shaped into a suitable curved surface.

The conveyor 3 has a rubber band 8 having a large number of teeth attached to the circumferential surface of a wheel, and moves in a direction perpendicular to the force of the rubber band.

A part of a rectangular elastic plate 9 made of phosphor bronze is fixed to the conveyor 3, and the elastic plate is tilted in the direction of movement as shown in the figure. A hole with a diameter of 1° is provided.

In the above-mentioned apparatus, when a powder sample 11 such as a cement raw material is continuously supplied from the hopper 4 to the upper part of the conveyor 3, the sample does not flow because the conveyor is covered with a rubber band having many teeth. It is transported by a conveyor in the direction of arrow p.

And since the lower surface 7 of the shaping plate is shaped into an appropriate curved surface,
The sample is sandwiched between the conveyor and the curved surface 7 and compacted to a certain density, forming a flat top surface, and passes under the X-ray window 6 in this state.

For this reason, the sample is analyzed by irradiating the window 6 with primary X-rays as shown by arrow a in Figure 1, and making the fluorescent X-rays generated from the sample enter the X-ray detector. Can be done.

Further, the sample that has passed through the window 6 falls to the lower part of the conveyor 3 and is sent out from the discharge port 12, and a new sample is sent into the window 6.

Therefore, the fluorescent X-ray analysis of the powder sample supplied from the hopper 4 can be performed continuously, and the sample can be compacted to a certain density and its surface can be formed into a smooth plane for accurate analysis. .

In addition, the elastic plate 9 attached to the conveyor passes under the shaping plate 5 at appropriate regular intervals, so that its tip slides on the underside 7 of the shaping plate.

Therefore, even if a part of the sample sticks to the shaping plate 5, it is scraped off by the elastic plate 9 before being firmly compressed and fixed.

In addition, since the elastic plate 9 is tilted in the direction of movement, the above-mentioned scraping can be carried out efficiently and reliably, and since the holes 10 are provided, there is no large variation in the force used to compact and shape the sample. be.

Note that when this elastic plate 9 passes through the window 6, the components of the elastic plate are analyzed.

However, since this analysis is performed at regular intervals, it can be removed by simple data processing.

Furthermore, although the above embodiment used wheels as the conveyor,
It is also possible to use a belt with teeth or the like.

[Brief explanation of the drawing]

Figure 1 is a longitudinal sectional view of the embodiment of the present invention, and Figure 2 is A of Figure 1.
-A sectional view, Figure 3 is an enlarged view of a part of Figure 1, Figure 4
The figure is a view taken along the line B-B in FIG. 3. In the figure, 1 is a container, 2 is a shaft, 3 is a conveyor, and 4
is a hopper, 5 is a shaping plate, 6 is an X-ray window, 7 is the lower surface of the shaping plate, 8 is a rubber band, 9 is an elastic plate, 10 is a hole, 11 is a sample,
12 is a discharge port.

Claims (1)

[Scope of utility model registration request] A substantially horizontally arranged shaping plate having an X-ray window for irradiating a powder sample with primary X-rays and extracting fluorescent X-rays generated from the sample and making them enter an X-ray detector, and a large number of teeth. moving in a direction perpendicular to the teeth thereof to transfer the powder sample and simultaneously pressing the sample against the lower surface of the shaping plate to flatten the surface of the powder sample passing under the lower part of the X-ray window. An elastic body consisting of a shaping conveyor and a hopper for supplying the powder sample to the conveyor, and whose tip moves in sliding contact with the lower surface of the shaping plate to scrape off the sample that has adhered to the shaping plate. A continuous fluorescence X-ray observation device for a powder sample, wherein the plate is attached to the conveyor with the plate tilted in the direction of movement thereof, and the elastic plate has a passage hole for the powder sample.