METHOD OF AND DEVICE FOR WASHING OUTER SURFACES OF PASSENGER CARS Russian patent published in 2005 - IPC

FIELD: transport engineering.

SUBSTANCE: proposed group of inventions relates to outer washing of passenger railway cars and electric trains and it can be used for washing any vehicle designed for carriage of passengers, such as street cars, trolleybuses, etc. proposed method includes preparation of washing solution from technical detergent, heating or cooling of outer surfaces of cars, moving of passenger train with simultaneous washing of outer surfaces of cars by jet of washing solution, swilling of car outer surface and its drying, cleaning of contaminated washing solution formed at washing by separating it into solid, liquid and slime fractions with subsequent return of cleaned washing solution into process of washing, collecting of liquid hydrocarbon fraction and slime with subsequent transportation for recovery, cleaning of return water formed at swilling stage with subsequent return of cleaned return water into washing process. Prior to washing, outer surface of cars is subjected to action of compressed air. Washing is carried out in two stages by alkaline washing solution of similar composition and concentration, but at different pressure of jets of washing solution, depending on configuration of surfaces and functional parts of cars. At first stage of washing, washing heads are used, and at second stage, rotating brush mechanisms. Cleaning of drain flows at each stage of washing is provided independently with additional coagulating and filtering of contaminated washing solution after which cleaned washing solution is subjected to decontamination, and return water from stage of swilling is decontaminated also after filtering and neutralizing. Device for implementing the method contains reservoir for preparation of washing solution device for heating or cooling of outer surfaces, service reservoir connected through heat exchanger and pumps with means of jet washing of outer surfaces and bogie frames made in form of brush mechanisms secured on carrying frames and furnished with drive, means for swilling outer surface to remove washing solution, means for drying outer surface of cars, flows cleaning station including contaminated washing solution intake reservoir, settler for phase separation of solution into fractions, intermediate reservoirs for collecting separate fractions and their removing provided with pumps, heat exchangers connected by pipelines with fitted-on shutoff valves and parameter control pickups, system for delivery and recirculation of water for swilling outer surface, including tanks of different capacity, pumps, filter, settler and water neutralization unit. Device is provided additionally with means for blowing out outer surface of car, cleaning stations of drain flows formed at each stage of washing are made separately and provided with additional stepped screen, grain filter, devices for metering out and delivering coagulant and flocculant, respectively, into settler and slime collector, plant for decontamination of cleaned washing solution, and press-filter for dehydrating the slime. Water delivery and recirculation system is furnished additionally with plant for decontamination of cleaned water, means for jet washing of outer surface of car from mud at first stage of washing are similar to those used for swilling, and brush mechanisms used at second stage of washing consist of two parts with self-contained drives. Proposed method improves quality of washing and provides high ecological safety of passengers owing to optimum cleaning of drain flows formed at washing, making it possible to use cleaned washing solution and return water and recover contamination products from car surfaces.

EFFECT: wasteless process.

8 cl, 6 dwg