SU1757764A1 - Method of clearing workpieces - Google Patents

Abstract

Use: The method of cleaning parts relates to the technique of cleaning parts mainly from dried paintwork materials and can be used, for example, to clean conveyor hangers. SUMMARY OF THE INVENTION: A method for cleaning parts is to provide mechanical collision of parts against each other in a rotating container, while to ensure fire safety when cleaning parts from paint and varnish coatings, before sealing the container into rotation, it is sealed and filled with an inert gas.

Description

The invention relates to a technique for cleaning parts, mainly for cleaning parts of overhead conveyors from dried paint materials, and can be used in any industry,

In the process of painting products, a layer of paint is deposited on the suspensions of overhead conveyors. Suspensions are gradually covered with a layer of paint that disrupts the process, and when painted in an electric field or by means of electric deposition, the process stops altogether due to poor electrical contact of the products through the suspension.

Thus, the suspension of the suspension containers requires systematic cleaning, which is usually carried out by annealing or stripping in a hot, concentrated alkali solution.

A known method of cleaning the surface of parts from the coating is by supplying a jet of heated compressed air to the painted surface.

The disadvantages of this method are: the need for additional devices to process the entire surface of the suspension, high consumption of compressed air, the need to heat it, the deterioration of the working conditions of workers due to dust extraction and the release of harmful substances during temperature decomposition of the paintwork material.

There is also known a method of cleaning suspensions from dried paintwork material using a brush cleaner and a container with a release agent solution, successively installed on the paint line along the conveyor.

However, this method does not guarantee the quality of cleaning the entire surface of suspensions, especially chain ones, which are most common on paint lines, as well as the possibility of cleaning hangers located only in the plane of the axial line of the conveyor, moreover, as a result of dust formation, sanitary conditions will deteriorate. and explosion-fire safety in the painting room

Closer to the invention is a method of cleaning parts by means of their tracks.

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The working surfaces of the device and the grinding of one workpiece against another in the process of their repeated joint movements of its rotating cylindrical drum, equipped with guide vanes on its internal surface and installed in a fixed casing, in the upper part of which there is a window for transferring the cleaned parts to the unloading tray.

The disadvantage of this method is the impossibility of providing fire safety in the process of cleaning parts from paint coatings as cleaning is performed in an atmospheric environment and possible ignition of paint dust from sparks formed in the process of cleaning that may occur when parts of each other or the drum body collide.

The purpose of the invention is to ensure safety in the process of cleaning parts from paint and varnish coatings.

This goal is achieved by the fact that the drum is sealed and filled with an inert gas prior to rotation.

The cleaning process is as follows.

The parts from the paint-and-lacquer coating are placed into the drum through the loading opening. Then the loading opening is sealed with a lid and inert gas is pumped into the drum through the fitting with a valve.

giving;; rot on the order of 0.02 MPa, fixed by a pressure gauge embedded in the drum housing. After that, the drive is turned on and the drum begins to rotate, in which, as a result of the impact of the parts against each other and the abrasive effect of the dry components of the paintwork material, they are cleaned. After a certain period of time, about 5-6 hours, the drive is turned off, the lid is opened and the cleaned parts, along with the lagged paint waste material, are unloaded onto a pallet with a perforated bottom, through which the waste paint material is poured into a special container and taken to destruction.

Claims (1)

The proposed solution will ensure the cleaning of parts from paint coatings in an environmentally friendly way, will reduce the costs of chemicals, reduce the cost of wastewater treatment, improve the sanitary conditions of labor of workers and fire safety in the workplace, the Invention Formula Cleaning the parts by providing a mechanical collision of parts against each other in a rotating container, characterized in that, in order to provide a fireproof ™ when cleaning parts from paint and varnish yty before bringing the vessel to rotate its sealed and filled with an inert gas