SU1089492A1 - Sample feeding device for x-ray radiometric analyzer of powder samples - Google Patents

Description

The invention relates to sour and geophysical instrumentation and can be used in all areas of the national economy, where an x-ray radiometric method is used to determine elements in powder samples.

An automatic sampling device for an X-ray radiometric powder sample analyzer is known, comprising a powder sample transfer unit, a set of containers for their placement, a feed mechanism, and excitation and detection units G1.

The disadvantages of this device are the inconvenience of operation due to the location of the excitation and detection units above the sample, which necessitates special preparation of the sample surface in the container before analysis; the likelihood of spraying an open sample in the device and getting the abrasive and radioactive material of the powder sample into the device nodes. It is not possible to install several excitation and detection units in the device to expand the range of detectable elements in samples. In addition, in the process of P1 measurement, it is impossible to promptly remove, insert, replace, and re-measure the same sample due to the design features of the containers.

Inconvenience in operation requires an operation to equip and prepare containers for work, as well as emptying them. The large weight and dimensions also create a number of inconveniences when working with the device.

The purpose of the invention is to increase the reliability of the device and to ensure an increase in the reliability of samples.

This goal is achieved by the fact that in the sampling unit of an X-ray radiometric analyzer of powder samples containing a powder transfer unit, and a set of containers for their placement, a feed mechanism and excitation and detection units, the transfer unit is provided with a table with guides, support and driving rollers, fixing elements and fastening the excitation and detection units, the containers are made in the form of rectangular links pivotally interconnected into a tape, with the possibility of turning the links one relative to another in the same plane, wherein the container is provided with an elastic lid, the bottom of the container is made of a film transparent for radioactive radiation, and the bottom of the sample is kept transparent for radioactive radiation by a jumper.

Pa figs. 1 shows a device, a transfer unit; in fig. 2 -. container link, plan view; Fig. 3 is a longitudinal section A-A in Fig. 2.

The movement unit (Fig. 1) consists of a flat horizontal table 1 and guides 2 arranged on it, in the gap of which leading 3 and supporting 4 rollers are mounted. i

0 The drive rollers are connected to the drive of the device through a gearbox, which is located in compartment 5, and also contains nodes and controls. E bottom of the table

5 locking elements 6 and a ba for fastening and fixing the excitation and detection unit. A window is opened in the table, which coincides with the optical axis of the probe part, is reinforced from below

Q excitation and detection unit.

A protective shield 7 is installed above the window, which protects the axes of the operator’s radioactive radiation during operation, which does not interfere with the passage of the tape of containers into the guiding devices. The link of the container 8 (FIG. 3) consists of a body 9 with a ring 10 mounted therein, a film 11 closed at the bottom, transparent for

The Q diode radiation of 4–20 µm thick, which is held at the end by a bandage 12 (the ring can also have another film that is transparent to radioactive radiation).

 The ring 10 is fixed in the housing 9 by locking screws 13. The container has an elastic lid consisting of an elastic body 14 provided with locking elements

0 V for installation on the container ring 10 and the elastic clamp 15 connected to the cover body.

A lock connection is used to connect the containers to the tape,

5, which is an axis 16c of milled along the ends of the planes, pressed on one side of the container body 9, and holes G with the grooves D opening them, made on the other side of the body 9.

The device works as follows.

On top of the housing 9, the links of the container 8 establish a ring of 10 seconds.

transparent for radioactive radiation film, in the lower part secured with a bandage 12, and secured with locking screws.

The powder test tube 17 is poured into the ring 10 and covered with an elastic lid, the casing of which is connected to the ring 10 with locking elements B by means of a light pressure and subsequent rotation, and the pressure clamp 15 tightly presses the sample to the radio transparent film 5

Claims (1)

PERFORMING DEVICE OF X-RAY RADIOMETRIC ANALYZER OF POWDER SAMPLES, containing a unit for moving powder samples, a set of containers for their placement, a feeder and excitation and detection units, which requires that, in order to increase the reliability of the device and ensure increased reliability of the samples, the unit the movement is equipped with a table with guides, driving and supporting rollers, fixation and fastening elements of the excitation and detection blocks, the containers are made in the form of rectangular links, hinges but interconnected in a strip pivotable relative to one another in one plane, wherein the container is provided with an elastic cover, and bottom of the container is made of transparent for radiation plenQ ki. <g figure 1 00 s 4 ^ s u s>