CS235110B1 - Laboratory vibrating extractor - Google Patents

Abstract

The invention solves a laboratory vibration extractor, especially for the extraction determination of uranium in operational laboratories. The extractor consists of a cylindrical extraction vessel in which a stirring member is placed, connected by a rod to a vibration unit. A lower sampling pipe is opened at the bottom of the extraction vessel. The first supply pipe, the second supply pipe and the upper sampling pipe pass through the extraction vessel plug. The vibration unit consists of a ring electromagnet connected to a pulse generator. The vibration extractor is intended for the extraction of small volumes of liquids that may be chemically aggressive. It is also suitable for use in automatic liquid analyzers, especially for the extraction determination of uranium in operational laboratories.

Description

The invention provides a laboratory vibration extractor, in particular for the extraction determination of uranium in process laboratories. The extractor consists of a cylindrical extraction vessel in which a stirrer is attached, connected by a drawbar to the vibration unit. In the bottom of the extraction vessel, there is a lower sampling line. The first supply line, the second supply line and the upper sampling line pass through the extraction vessel stopper. The vibration unit consists of an annular electromagnet connected to a pulse generator.

The vibration extractor is designed to extract small volumes of liquids that may be chemically aggressive. It is also suitable for use in automatic liquid analyzers, especially for uranium extraction determination in operational laboratories.

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The invention relates to a laboratory vibration extractor, in particular for the extraction determination of uranium in process laboratories.

To date, extraction in the uranium extraction assay has been performed manually in glass shakers. This procedure is laborious and time-consuming and does not allow process mechanization. The known laboratory extractors, which are part of the analyzers, utilize air bubbles to mix the phases of the stream and are intended for continuous extraction, which is not suitable for the uranium extraction determination due to the low mixing effect and the high consumption of chemicals in continuous extraction.

These disadvantages are overcome by the laboratory vibration extractor according to the invention. It is based on the fact that in the cylindrical extraction vessel there is a slidingly mounted stirrer which is connected by a rod to a vibration unit consisting of an annular electromagnet, a guide sleeve and a ferromagnetic core. The ring electromagnet is connected to a pulse generator. The rod passes through a lead hole in the plug of the extraction vessel, into which both the feed line and the upper sampling line are also connected, while the lower sampling line is connected to the bottom of the extraction vessel.

The laboratory vibration extractor is of simple construction and design. Its design allows the use of materials with high chemical resistance to extracted aggressive liquids. The extractor has a high homogenizing effect, whereby the liquid level is only slightly ripped and no liquid splashes. It is also suitable for assembly of automatic analyzers.

The attached drawing schematically shows an exemplary arrangement of a laboratory vibration extractor according to the invention.

The laboratory vibration extractor consists of a cylindrical extraction vessel 10 housing a mixing member 27 connected by a drawbar 21 passing through a guide opening 14 in the center of the extraction vessel stopper 10 to the vibration unit 20. In the bottom of the extraction vessel 10 a lower sampling line 16 is provided. 11, the first inlet duct 12, the second inlet duct 13 and the upper take-off duct 15 extend through its orifice above the top dead center of the mixing member 27. The vibration unit 20 consists of an annular electromagnet 22 connected to a pulse generator 26. In the guide sleeve 24, a magnetic core 23 is attached to the rod 21. Above the stop 28 of the guide sleeve 24, a resilient rest stop 25 is provided.

During operation of the vibration extractor, a metered amount of feed is fed through the first inlet line 12, and a metered amount of extender is supplied through the second inlet line 13. By connecting the pulse generator 26 to the network, the annular electromagnet 22 periodically pulls the ferromagnetic core 23 to its center. By selecting the pulses generated in the pulse generator 26, the stroke and frequency of travel of the ferromagnetic core 23 can be varied within a wide range, with the pulse adjustment being advantageous such that the ferromagnetic core 23 at the bottom dead center does not yet touch the resilient rest stop 25. The mixing effect is caused by the rapid flow of liquid through the annular gap between the wall of the extraction vessel 10 and the stirring member 27 as the stirring member 27 moves. After complete mixing, the pulse generator 26 is switched off and the ferromagnetic core 23 drops to a flexible position. stop 25. After phase separation, the lighter phase is taken through the upper sampling line 15 and the heavier phase is taken through the lower sampling line 16.

The laboratory vibration extractor according to the invention is intended to extract small volumes of liquids that may be chemically aggressive. It is also suitable for use in automatic liquid analyzers.

Claims (3)

SUBJECT Laboratory vibration extractor, in particular for the uranium extraction determination, characterized in that it consists of a cylindrical extraction vessel (10), in which a stirring member (27) is connected connected by a rod (21) passing through a guide opening (14) in the center of the plug (1). 11) of the extraction vessel (10), to the vibration unit (20), the bottom of the extraction vessel (10) having a lower sampling line (16), while a first supply line (12), a second supply line (13) ) and an upper sampling line (15), the mouth of which is provided above the top dead center of the mixing member (27). VYNALEZU Laboratory vibration extractor according to claim 1, characterized in that the vibration unit (20) consists of an annular electromagnet (22) connected to a pulse generator (26), a guide bushing (24) with a stop being formed in the center of the annular electromagnet (22). (28), in which a magnetic core (23) connected to the rod (21) is housed. Laboratory vibration extractor according to Claims 1 and 2, characterized in that a resilient rest stop (25) is provided above the stop (28) of the guide sleeve (24).