SU1674984A1 - Unit for cleaning products - Google Patents

Abstract

The invention relates to mechanical engineering and can be used in devices for cleaning surfaces. The invention allows to reduce energy consumption and improve the quality of cleaning. The installation contains a washing chamber, a means of registering the feeding liquid in the form of two membrane electrolysers arranged one above the other, each of which contains an anode and a cathode space. In the process of washing parts, a portion of the washing solution stream is fed simultaneously to various spaces of the lower electrolyzer by gravity, where it is successively passed through the anode and cathode spaces of two electrolyzers, after which the entire solution flow is directed to the collection chamber of the washing chamber. 1 il.

Description

The invention relates to mechanical engineering and can be used for washing products, in particular, from oils.

The aim of the invention is to reduce the energy intensity of the installation and improve the quality of cleaning.

The drawing shows the installation, general view.

The installation for washing parts contains a washing chamber with a collection 1 of washing liquid located in its lower part, a pump 2 and hydrants 3, pipelines 4, a means 5 for regenerating washing liquid with two membrane electrolyzers, each of which has an anode 6 and a cathode 7 space, electrodes 8, the membrane 9, the pipelines 10 connecting the regeneration means with the washing chamber, and the sediment discharge nozzles 11 with the valves 12. Between the spaces 6 and 7 of the regeneration means, there is a partition with passage openings 13.

Installation for washing parts works as follows.

The solution from collector 1 is fed through pipelines 4 by pump 2 to hydrants 3, washes parts and flows to the bottom of the washing chamber. At the same time, a part of the solution continuously enters the regeneration means 5 and, having passed successively through the anode 6 and cathode 7 spaces of the electrolyzers, and after processing in the space between the electrodes 8 separated by the membrane 9, returns to the washing chamber through pipelines 10. Sludge is removed periodically through nozzles 11 and valves 12. Passage through the anode space, the solution becomes acidic, the contaminants coagulate, while the solution is almost completely freed from contamination, it falls on the bottom of the electrolyzer and removed. After that, the solution enters the cathode space, where

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restoring the pH of the solution and the solution is sent to the washing chamber to wash the parts. The solution from the collection of the washing chamber enters the electrolytic cells by gravity. At the same time, the solution entering the electrolysis cells is heated during the electric treatment process and as a result of the difference in the density of the solution, the level of the solution in the electrolyzers increases in relation to its level in the collection chamber of the washing chamber and it flows into the collection chamber of the washing chamber. The pattern of movement of the solution in the cells of the electrolyzer allows coagulated contaminants to settle to the bottom of the electrolyzer and remove them.

The passage of the solution through the anode spaces 6 leads to a decrease in the pH of the solution to 2–2.3 and coagulation of all contaminants. In the cathode spaces 7, the pH rises to 10-11. At the outlet of the regeneration means, the average runoff has a pH value of 8-10 and can be reused. The obtained ratios between the design parameters of the installation allow obtaining the minimum hydraulic resistance ensuring the solution passage time necessary to achieve the desired pH values.

This is ensured by the fact that the hydraulic resistance of the inlet and outlet pipelines ensures the required flow rate of liquid through the regeneration means, at which the degree of heating of the liquid is sufficient for it to pass through the spaces of the electrolyzers and the passage time is sufficient to achieve the required pH value. fluid. The ratio of the volumes of the collector of the solution and the regeneration means provides the necessary capacity of the regeneration unit, since the amount of contaminants accumulating in the mass of the waste liquid is determined by its volume (for each type of washing liquid) and depends on

The output of the regeneration means, which determines its required volume.

Thus, the use of this installation allows to increase the purity and service life of the solution, and hence the quality of washing the parts, to reduce energy consumption by eliminating the pump for supplying washing liquid from the regeneration means to the collector and to simplify the design with a separate cleaning solution its filing, thereby reducing the consumption of materials installation.

Claims (1)

Claims An apparatus for cleaning products comprising a washing chamber with a collection liquid located in its lower part and a means for regenerating washing liquid with a supply pipe and a discharge pipe connected to the collection, such that. in order to reduce energy consumption and improve the quality of cleaning, the regeneration means is made in the form of two membrane electrolyzers arranged one above the other so that the cathode space of one of them is located above the anode space of the other, and the electrolyzers are equipped with discharge nozzles of cleaning products from each space and are separated from each other a baffle with through holes for the flow of fluid from each space of one electrolyzer to the space above it another electrolyzer , while the cross-sectional areas of the electrolyzers, the inlet and outlet pipes and the passage openings of the partition are referred to as V: 1/3: 1/10, the volume of the washing liquid collector to the volume of regeneration means is 4: 1, the supply pipe connected to the bottom of the collector, and the discharge pipe is connected to the collector in its upper part. / / / G V V Ґ T  i / / X w Г С 8 b -1 13 612 M2  ten ten "