CS243967B1 - System for automatic evaluation of solution concentration - Google Patents

Abstract

The solution concerns a system in which the measured and reaction bath is fed into a solution tempering block, connected by dosing pumps to the reaction space, and to which a member for evaluating the quantity of evolved gas and a reaction space shut-off valve are connected. The system is controlled by a central control unit and serves for automatic continuous evaluation of the concentration of solutions where a suitable solution can be assigned to the measured bath so that their mutual reaction releases an equivalent detectable amount of gas.

Description

The invention relates to a system for the automatic continuous evaluation of the concentration of solutions.

Current methods for laboratory determination of bath concentration use the measured and reactive components in the evaluation of physico-chemical changes of the solution. For the purpose of continuous monitoring of the bath concentration, technically demanding devices are used, for example evaluating the thermal conditions during the mixing of the measured and reaction components. Known solutions are set forth in the inventive descriptions: PLR Pat. No. 86,490, which relates to potentiometric measurement of electrolyte solutions and to a method of automatic regulation of their mixing, further CSR Pat. No. 140,475 method and apparatus for continuously measuring the concentration of oxidant solutions. The disadvantages of these devices or systems are their complexity in terms of production, demands on cleanliness of the measured bath and high purchase price.

The essence of the automatic solution concentration evaluation system used, for example, in the textile industry, is that the solution tempering block is connected by a metering bath metering pump and a reaction bath metering pump to a reaction chamber to which a gas quantity evaluation member and a reaction shut-off valve are connected. The central control unit is connected to the metering bath metering pump, the reaction bath metering pump, the reaction chamber shut-off valve, the gas evalution evaluation member and the solution tempering block.

Higher effects of the system according to the invention consist in its reliable automatic operation undemanding: aa cleanness of the bath and operation, low purchase costs and the possibility of direct use in program or automatic controlled operations.

243 967

The attached drawing shows a block diagram of a system for automatically evaluating a solution concentration. The bath to be measured is fed by the metering bath metering pump 1 simultaneously with the reaction bath supplied by the reaction bath metering pump 4 to the mixing space 4, to which the quantity evacuation member 5 is connected, is controlled by the central control unit 7, the measured and reaction bath undergoing a bath tempering block 6 prior to treatment.

A system for automatically evaluating the concentration of solutions used, for example, in the textile industry, is formed by connecting the mixing chamber 4 with the metering bath metering pump 11, the reaction bath metering pump 2, and the mixing chamber 4 being further coupled space. The metering pumps 16 are connected to the bath tempering block 6. The central control unit 7 is connected to the metering pumps 1 and 6, the mixing chamber shut-off valve 3, the member 5, to evaluate the quantity of gas produced and the bath tempering block 6.

The central control unit 2 provides, by means of metering pumps 1 and 2, an accurate dosing of the measured reaction bath into the mixing space 4, where the chemical reaction of the two baths releases a gas proportional to the concentration of the measured bath. The central control unit 7 further performed using P element 2 ^R °, the quantity of gas evolved register values of quantity of gas evolved, and then ensures the sealing valve 3 through the mixing space 4 emptying the mixing space 4 ,, its reliable rinse bath measured, together with preparation for the next measurement cycle . The measured gas quantity reading is retained in the memory of the central control unit 7 until a new reading from the next measuring cycle arrives, and the time between the measuring cycles can be selected.

The system according to the invention can be used wherever a suitable reaction solution can be added to the measured bath so that an equivalent conclusive amount of gas is destroyed by their chemical reaction. The following table lists some practical _m Option to use.

Table

243 967

Test substance Agent Developed gas hydrogen peroxide sodium hypochlorite ° 2 sodium hypochlorite hydrogen peroxide ° 2 soluble carbonates (soda, potash) sulfuric acid oo ₂ soluble sulphide (sodium, calcium) sulfuric acid H ₂ s sulphites (hisulfite) sulfuric acid . S0 ₂ acids (strong) sodium carbonate C0 ₂ persulphates sodium hypochlorite ° 2

SUBJECT OF THE INVENTION

Claims (1)

A system for automatically evaluating the solution concentration / characterized in that the solution tempering block (6) is connected by a metering pump (1) of the measured bath and a metering pump (2) of the reaction bath with a mixing space (4) to which the member (5) is connected for evaluating the quantity of developed plume and the reaction chamber shut-off valve (3), wherein the central control unit (7) is connected to the metering bath metering pump (1), the reaction bath metering pump (2), the reaction chamber shut-off valve (3), (5) to evaluate the quantity of gas produced and the block (6) bath tempering ·