SU1688950A1 - Methods for cleaning vessels - Google Patents

Abstract

The invention relates to the cleaning of containers and improves the efficiency and quality of cleaning. The tanks are cleaned by jets of working agents, mainly washing liquids, at an angle of 30 ... 90 ° & to the surfaces being cleaned, and the containers simultaneously report periodic accelerations in the vertical and horizontal planes, while the working agents in the tank are reported with spiral movement towards the neck, while the periodic accelerations and spiral movement of working agents are retained after the supply of working agents is stopped from the tank. The washing agents are fed into the tank in a pulsed manner with a period of 0 ... 20 s, and after removing the washing liquid from the tank, the gas to be cleaned serves gas under a pressure of 0.2 ... 1, OMPa. 3 hp ff, 4 ill.

Description

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The invention relates to the cleaning of articles of the type of containers of a small volume and can be used in various areas of the national economy, mainly for cleaning bottle-shaped containers.

The aim of the invention is to increase the efficiency and quality of cleaning the inner surface of the containers.

This method consists in that according to the cleaning method, which includes installing the product to be cleaned with the inner surface on the perforated contour and the impact on the contaminated surface with jets of washing liquid, the jets of washing liquid are directed at an angle of 30 ... 90 ° to the tangent at the point of impact surface. At the same time, the tanks give periodic accelerations of different amplitudes, and the liquids in the tanks give spiral movement. Then, the supply of liquid to the internal cavity of the container is stopped, but periodic axial accelerations and the spiral movement of the liquid are maintained until it is completely removed from the container. To increase the effect of the washing jets on the surface being cleaned, the washing liquid is fed into the container in pulses from 0 to 20 s or The washing liquid is supplied with compressed air pulses with a pressure of 0.2 ... 1.0 MPa with a period of 0 ... 20 s. The final cleaning is provided by supplying gas (air) after removing the liquid from the tank to the surface to be cleaned at an angle of 30 ... 90 ° to the tangent at a pressure of 0.2 ... 1.0 MPa. At the same time, in the device for cleaning tanks containing a washing chamber, a collector with perforated circuits, a system for supplying washing liquid to

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the collector, the collector is arranged so that the washing contours in the form of perforated pipes are arranged vertically. The holes in the nozzles are predominantly conical in shape with an angle of no more than 12 °. Part of the holes is oriented in the upper direction, part - in the side. Moreover, on the side surface of the nozzle, the holes are arranged, for example, in such a way that they are arranged in pairs in perpendicular sections at opposite ends of the diameter in the lateral projection, for example, form an equilateral triangle. The longitudinal axes of the side perforations form an angle of 30 ... 90 ° with the tangents at the intersection point of the nozzle contour. In this axis, part of the nozzle openings intersect with the axis of the nozzle at an angle of 0 ... 45 °. Support nozzles, supported by a coaxial nozzle with a spring, are installed on the nozzles. To regulate the flow of fluid from the tank, the movable support washer is made in the form of a profile covering the neck of the product to be cleaned or in the form of a conical washer partially entering the product throat. The rotating washing circuit has external nozzles for cleaning the outer surface of containers from the outside of the row, and internal nozzles for cleaning from the inner side of a row of cleaned containers installed on the washing nozzles for cleaning the inner surface of the circumferentially located containers and the external nozzles of the rotating circuit are installed in mismatched planes. The source of compressed air supplies the latter to the inner cleaned surface of the containers through the same nozzle ki

Fig. 1 shows a schematic of an apparatus for carrying out the above method of cleaning containers; in fig. 2 - one of the washing circuits; in fig. 3 is a section A-A in FIG. 2; in fig. 4 is a section BB in FIG. 2

The method of cleaning containers is as follows.

The container is installed on the washing nozzle with the neck down and serves washing liquid. Jets of washing liquid, exit from the holes of perforated pipes at an angle, acts at the same angle on the surface to be cleaned (for a round container). By acting at an angle of 30 ... 90 °, the streams wash away the contaminants, create a spiral movement of the washing liquid, which due to centrifugal forces intensively affects the surface being cleaned by the vessel. Due to the oscillation of the spiral movement

liquids due to the oscillation of the container at the nozzle due to the action of the jets of the rotating circuit and the pulsating removal of liquid from the container through the throat,

the capacitance acquires acceleration. As a result, the washing fluid acquires speed along the forming capacitance. The pulsed supply of the washing fluid to the reservoir or the pulsed compressed air supply with a pressure of 0.2., 1.0 MPa with a period of 0, .. 20 s enhances the axial accelerations. The use of an elastic support serves the same purpose. The choice of the pulse frequency was made taking into account the inertia of the fluid in the system.

5 After the required purity has been reached, the supply of washing liquid is stopped and it is pushed out of the neck, continues to create axial accelerations, i.e. prevents the sedimentation of washed

0 contamination on the cleaned surface. After removing the liquid, air is fed through the perforations at a pressure of 0.2 liters. 1.0 MPa. Air jets act on liquid droplets on the surface being cleaned and inform them of a high sliding speed, which provides additional surface cleaning from residual contaminants.

A device for implementing the method

0 contains a washing fluid supply system with a pump unit 1, a gas (air) supply system including a pneumatic impulse device 2, a valve 3, a manifold 4 with washing circuits (nozzles) 5 installed vertically. The washing circuits 5 (fig. 2) are made removable with holes of predominantly conical shape, with the holes of the upper part of the nozzle oriented upwards, and the opening on the lateral surface of the nozzle mostly oriented horizontally.

At least one top hole is oriented upwardly coaxially with the nozzle. The remaining holes are made

5 so that the angle between the axis of the hole and the tangent to the surface of the nozzle is 30 ... 90 °. And all the holes are turned in one direction. According to the height of the nozzle, the holes are arranged, for example, so that two holes located side by side in one perpendicular section in the lateral projection form an equilateral triangle with a hole in the other perpendicular section. In the lower part of the nozzle, a support is installed coaxially with the latter, for example, in the form of a washer or coil of spring 6. Support washer 7 can be made in the form of a profile or a conical sleeve which surrounds the neck of the product being cleaned. A cleaning device is placed in the sink.

the chamber 8 with a loading hatch 9 rotating the washing circuit 10c with internal and external branch pipes for external washing of products, a tank of washing solution 11.

A device for implementing the method works as follows.

The products to be cleaned 12 are put on the washing nozzles 5 and supply washing liquid, which acts at an angle to the surface to be cleaned. The reversal of all holes in the nozzle creates an intense spiral movement of the fluid, directed towards the neck. Centrifugal forces further intensify the washing process. Due to the pulsating removal of the fluid and the effects of side jets, the capacitance acquires periodic accelerations (shaking) intensified by springs, which enhance the washing action and contribute to the removal of the washed contaminants. Pulsed supply of washing liquid and gas (air) to the liquid activates the cleaning process. Air pulses are generated by pneumatic impulse devices, fluid impulses are generated by hydraulic impulse devices. When the liquid reaches the required purity of the product, the liquid stops and the liquid, which flows through the neck, shakes the container, washes the surface. Then air is supplied to the washing nozzles under a pressure of 0.2 ... 1.0 MPa, which ensures a high-speed air flow from the holes. Air intensively removes contaminants from the inner surface of tanks.

For ease of use, the nozzles are removable.

The proposed method allows to increase the efficiency and quality of cleaning of containers due to the intensive effect of the substance on the surface being cleaned, including low-strength plastic containers and, for example, as used

gaseous ozone agent, make betericidal cleaning of containers.

Claims (6)

1. A method for cleaning a container, consisting in the action of jets of working agents, mainly washing liquids, on the inner and outer surfaces of an overturned tank, characterized in that, in order to increase the efficiency and quality of cleaning, the jets of working agents are carried out at an angle of 30-90 ° to the surfaces to be cleaned, the jets in the tank communicate spiral movement in the direction of the neck, and the tanks simultaneously report periodic accelerations in the vertical and horizontal planes, with the periodic accelerations of the tank with stored after stopping the supply of working agents until they are completely removed from the tank. 2. A method according to claim 1, characterized in that the washing liquid is supplied to the container in a pulsed manner with a period of not more than 20 s. 3. A method according to claim 1, characterized in that a pulsed compressed gas, preferably air, is supplied to the washing liquid under a pressure of 0.2-1.0 MPa with a period of not more than 20 s. 4. A method according to claim 1, characterized in that after removing the washing liquid from the container, gas, preferably air, is supplied to the surfaces to be cleaned under a pressure of 0.2-1.0 MPa. 5. A method according to claim 1, characterized in that the action of the jets of working agents on the inner and outer surfaces of the container is carried out in different planes. 6. A method according to claim 1, characterized in that the action of the jets of the working agents on the inner and outer surfaces of the container is carried out at an angle of 0-45 ° in the vertical plane. Yu. 812 94 II / and Fig. / 2 Aa 2U12 Fm.z 5-5 4