SU1762960A1 - Equipment for purification and distribution of viscous fluid - Google Patents

Abstract

The invention relates to technological processes that require viscous liquids with a high degree of purification from 3 air bubbles. In working condition, the tank 1 is filled with lacquer, cleaned of mechanical impurities and air bubbles above the level of the distributing port 3. The hollow ring 7 with the lower part of the base and the mesh cup is completely immersed in the lacquer. The varnish cleared of mechanical inclusions flows by gravity into a floating filter. From the floating filter, according to the principle of communicating vessels, the varnish flows through the lateral surface and the bottom of the net glass 8 into the tank 1, clearing air bubbles. 1 il. 6 fe y & g & k v | About you

Description

The invention relates to a technique where viscous liquids are required with a high degree of purification from air bubbles, for example, in lacquering chrome tin in an electrostatic field.

The aim of the invention is to increase the cleaning efficiency of a viscous liquid from air bubbles.

The goal is achieved by the fact that a device for cleaning and dispensing a viscous liquid at atmospheric pressure, made in the form of a tank with a dispensing and drain connections in the lower part and with a filter for cleaning the liquid in the upper part, is provided with a floating filter placed in the tank in the form of a hollow ring, to the inner surface of which the mesh cup is attached.

In the known solutions of this problem, the liquid degassed or purified from air bubbles has contact with the environment. When moving it in this environment, air is trapped in liquid.

In the present invention, a viscous liquid from a stationary filter flows into a floating filter. From the floating filter, according to the principle of communicating vessels, liquid flows through the side surface and the bottom of the net glass into the tank.

When liquid flows from the floating filter to the tank, air bubbles distributed in the volume of the mesh cup, with a diameter larger than the mesh cell size, from which the mesh cup is made, do not pass through its side surface and bottom, but remain inside the floating filter.

After the liquid stops entering the floating filter, air bubbles in it will begin to float to the surface and form a layer of foam. If the flow rate from the tank and the flow into it are zero, during the time that more bubbles float up and the time the foam collapses, the fluid in the filter will be clear of air bubbles and the surface of the fluid will be free of foam.

When the liquid enters the floating filter again, it will again be saturated with air bubbles. If at this moment there was a layer of foam on the surface of the liquid, then its saturation with air bubbles will be more intense and more abundant. However, air bubbles with a diameter greater than the diameter of the grid cell will not leave the floating filter through the side surface and the bottom of the mesh cup. This ensures high cleaning efficiency of viscous liquids from air bubbles.

In the proposed solution, the filter is made floating. The hollow filter ring rests on the surface of the purified liquid, and the mesh beaker is completely immersed in the liquid and forms the interface between the two liquids: purified and original. The interface between these fluids does not come into contact with the environment (air), which makes it possible to effectively separate air bubbles from the original liquid.

In the present invention, a mesh cup serves to form the interface between two liquids: purified and initial, which is absent in the known solutions.

The filter is made floating so that the interface between the liquids does not come into contact with air. This is achieved by the fact that the lower part of the hollow ring is partially immersed in the liquid due to its own weight and the weight of the mesh cup. Due to this, the liquid level in the hollow ring will be above the top of the mesh cup. This eliminates the contact of the net glass with the surrounding air,

The device is shown schematically in the drawing.

It includes a tank 1 with a drain pipe 2 and a dispensing pipe 3 at the bottom. In the upper part of the tank there is a fixed filter for cleaning a viscous fluid from mechanical impurities and air bubbles, consisting of a funnel 4 with a mesh 5, on the upper surface of which is a filter cloth 8. A floating filter consisting of a hollow ring 7 is placed in the tank 1, to the inner surface of which is attached mesh glass 8.

In working condition, the tank 1 is filled with liquid, free from mechanical impurities and air bubbles, above the level of the distributing port 3. At the same time, the hollow ring 7 with the lower part of its base and the mesh cup is completely immersed in the liquid.

The device works as follows.

The initial liquid for cleaning and dispensing it to the dispensers enters the tank 1 through a fixed filter plate. Trickling through the filter cloth 6 and the grid 5, clearing mechanical impurities and air bubbles, the fluid flows into the funnel 4. From the funnel 4 the fluid flows into the middle of the hollow ring 7. The stream of fluid, falling down, hits the surface of the fluid in the floating filter . When this occurs, air is entrapped by the jet of fluid and

sprinkling it. This leads to intensive formation of air bubbles in the liquid and transfer them from the surface to the mesh cup.

From the float filter, according to the principle of communicating vessels, the liquid through the side surface and the bottom of the grid glass 8 flows into the tank 1, clearing air bubbles. The purified liquid from the tank through the dispensing port 3 enters the slotted spray paint.

Thus, supplying the device with a floating filter increases the cleaning efficiency of a viscous liquid from a bubble.

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air, which ultimately improves the quality of the coating of tin.

Claims (1)

Apparatus of the Invention A device for cleaning and dispensing a viscous liquid at atmospheric pressure, made in the form of a tank with dispensing and drainage pipes in the lower part and with a filter for cleaning the liquid in the upper part, characterized in that, in order to increase the efficiency of cleaning viscous liquid from air bubbles, the device is equipped with a floating filter placed in the tank, made in the form of a hollow ring, to the inner surface of which the mesh tube is attached.