SU54772A1 - Instrument for the automatic analysis of liquids - Google Patents

Description

The present invention relates to the discharge of devices already known for automatic analysis of liquids in which the test liquid in measured quantities is mixed in a reaction vessel with the same amount of reagent, and the gas released in the reaction is measured and its content is determined by what or a component of the test fluid. In such kind of known devices for the automatic analysis of liquids, a power unit is used, which acts on the flow of water.

In the proposed device for automatic analysis of liquids, four bells are placed in the water receiving reservoir of the mechanism, one of which is connected to the tube of a water-jet air pump, which serves to stop the flow of the test liquid into the measuring pipette at the beginning of the cycle of operation of the device, designed to control the introduction of the reagent into the reaction vessel, the third is connected to the measuring pipette and serves to control the introduction

the test liquid into the reaction vessel, and the fourth is connected to the flask, from which the washing liquid is fed into the reaction vessel at the end of the instrument operation cycle.

The proposed instrument for the automatic analysis of liquids can be used, for example, in the soda industry for determining ammonia in soda production liquids.

The drawing shows a schematic view of this device.

The design of the device is based on the well-known principle, which is as follows: the liquid containing ammonia is taken in a certain amount and diluted with distilled water. After dilution, the liquid is treated with sodium hypochlorite, and the nitrogen released by the reaction is measured by a recording mechanism.

A device for automatic analysis of liquids operates as follows. The tube 1 is continuously supplied with a liquid containing ammonia. The pipe 2 continuously enters the pump 3 with water from a reservoir that is not indicated on the drawing. From the same reservoir, water enters through tube 4 into reservoir 5. Reservoir 5 consists of two spaces: water enters outer space through tube 4 and overflows into the inner. Thus, the first is always filled with water. The vessel 7, into which the test liquid enters, has inside a central tube into which the liquid is poured, going into the measuring burette 8 for measuring the test liquid. The test liquid passes the balls 9, 10 and is removed through a tube // from the device; thus, in buret 8, the liquid is refreshed all the time.

When the water level when filling the tank 5 reaches the lower end of the bell 6 and closes it, the air supply to the pump 5 will stop, as a result of which the latter will begin to suck the test liquid out of the vessel 7 through itself and it will not flow into the measuring burette 8. Further increase of the water level in the tank 5 causes the air in the bell 12 to be compressed, so that the air passing through the water gate in the outer space of the tank 5 and the bell 12 enters the box 14 with hypochlorite and causes the hypochlorite to go out of it into the first vessel 15. A further increase in water level in tank 5 covers the bell 16 and generates in it a pressure which is transmitted to the ball 10 burettes 8 and causes the test liquid to flow through the ball 9 into the reaction vessel 15.

A further increase in the level of water in tank 5 causes air to be compressed under the bell 17, from which air, passing through tube 18, enters flask 19 with distilled water, which, entering the vessel 15, dilutes the liquid under study.

The water level in the tank 5 continues to rise until the water reaches the overflow into the siphon 20, after which the latter will start working and idle the tank 5.

Water from the siphon 20 enters the tank 21, filling it. Filling the tank 21 with water causes air to be compressed under the bell 22, the air from which goes to the vessel 15, bubbling through the liquids, located in the latter, and vigorously mixes them, thus ensuring the completeness of the reaction. The air and the released nitrogen enters the registration mechanism 23, 24, 25, 25. The volume of the bell 25, regulated by interchanging the stop 25, is equal to the volume of air blown through the solution.

When the gas enters the air, the bell 23 first rises, since less pressure is needed to lift it than to lift the bell 24. After the weight of the bell 23 reaches the stop 25, the bell 24 associated with the pen begins to rise. 25 straight drum, the value of which corresponds to the percentage of ammonia in the test liquid.

As indicated above, water from tank 5 through siphon 20 enters tank 21 and, when overflow is reached into siphon 27, the latter starts working and empties the tank 21. At the same time, vessel 15 is emptied, due to the fact that siphon 28 is attached to siphon 27.

Through the same siphon, the gas leaves the recording mechanism.

After emptying the reservoir 5, the siphon 20 is cut off and the reservoir 5 is refilled with water, as a result of which the cycle of operation of the device is repeated.

In order that the siphon 20 does not stop before the tank 21 is filled and starts emptying, the upper water level in the tank 2 / blocks the level of the runoff of the vedas from the vessel 5.

Skles 14 and 19 have a system of tubes for the release of reagents into the instrument and for filling with reagents. The device of these tubes is clear from the drawing.

The subject matter of the invention.

Claims (2)

1. Device for automatic analysis of liquids, for example, for determining ammonia therein by recording the volume of gas released when the measured amount of the test liquid is mixed in the reaction vessel with the measured amount of reagent, for example hypochlorite, and used to control the measurement of the test liquid and reagent, their introduction into the reaction vessel and the removal of gas and mixtures from the device after the reaction, the force mechanism driven by filling the tank with water, characterized in that the power tank of the force mechanism is placed on different The air bells 6, 12, 16, 17, of which the bell 6 is connected to the tube of a water jet air pump 5, are used to stop the flow of the test liquid into the pipette 8 at the beginning of the cycle of operation of the device, the bell 12 is connected to the reagent containing flask 14 and is designed to control the introduction of the reagent into the reaction vessel 15, the bell / (connected to the measuring pipette 8 and serves to control the introduction of the test liquid into the reaction vessel, and the bell 17 is connected to the flask 19, from which it is fed into the reaction vessel liquid at the end of the instrument cycle. 2. The form of the device according to claim 1, characterized in that under the drain siphon 20 of the reservoir 5 of the force mechanism is installed a tank 21 equipped with a siphon 27, inside of which is placed an air bell 22 connected to a tube passed into the reaction vessel 15 supplying air from under the bell 22 to the vessel 15 in order to mix the reagent with the liquid under study. to the author's certificate of E. No. 54772 ..liy rs E. Yeorobchansky -22 26 ABOUT