SU1650189A1 - Liquid deaerator - Google Patents

Abstract

The invention relates to devices for removing free and partially dissolved gas from a liquid stream and can be used in the chemical and photographic and pulp and paper industries for plastics processing. The purpose of the invention is to increase productivity. The device consists of a tank with inlet and outlet nozzles and a drainage tube. The bottom is a radiating surface and is made in the form of a longitudinal comb with ultrasonic transducers placed between the projections. The outlet is located below the upper edge of the projections. Ultrasonic transducers are covered with elastic material. The bottom is made along the length of the individual sections. Sections through one can be installed obliquely. 3 hp f-ly, 4 ill.

Description

The invention relates to devices designed to remove free and partially dissolved gas from a liquid stream and can be used in the chemical and photographic and pulp and paper industries in plastics processing.

The purpose of the invention is to increase productivity and manufacturability.

FIG. 1 shows the proposed device, a general view; in fig. 2 is a section A-A in FIG. one; in fig. 3 - the device, the bottom of which is made of separate sections; in fig. 4 - the device, where the sections through one set at an angle to the horizontal.

The device includes a container 1 filled with liquid, with an inlet 2 and outlet 3 nozzles and a drainage tube 4. The bottom 5 of the container 1 is made in the form of a longitudinal comb, between the lugs of which ultrasonic transducers 6 are placed. The bottom 5 (lugs) is an ultrasonic radiating surface . The outlet 3 is located below the upper edge of the protrusions of the bottom 5. Ultrasonic transducers 6 are covered with elastic material 7. The bottom has a sealing and shock-absorbing casing 8 around the perimeter. The outlet 3 is located below the upper edge of the projections. The bottom 5 can be made of separate sections joined together with each other along the device 9 (see, Fig. 3). Section 9 through one can be installed at an angle to the horizontal (see Fig. 4).

The protrusions of the bottom are made of steel. Ultrasonic transducers 6 are made in the form of plates of a material capable of changing their linear dimensions with chaOs under the action of a voltage applied to it

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with a frequency equal to the frequency of the applied voltage.

The device works as follows.

i On the inlet nozzle 2, the liquid fills the tank 1 and moves along the channels to the outlet nozzle 3. At the same time, the ultrasonic transducers 6, which are in pairs, (through projections) under the action of the applied voltage, work in phase, i.e. if the ultrasound transducer 6 expands, then the ultrasound transducers to the left and right of it are compressed, and vice versa, if it is compressed, then the neighboring transducers expand. The compression and stretching of the ultrasonic transducers b causes the same common-mode oscillations of the ultrasound radiating surface of the bottom 5 across the channel with the ultrasonic frequency. The protrusions of the bottom are ultrasound emitters and emit ultrasonic vibrations directly into the fluid flowing through the channels.

In the zone of effective action of ultrasonic vibrations, mainly in the zone between the projections, gas is released from the dissolved state to the free state. Under the action of an ultrasonic field, intense coalescence of gas bubbles occurs, and they are effectively removed from the zone of action of ultrasound, floating upwards. The action of the ultrasonic field continues throughout the path of the fluid passing through the channels to the outlet nozzle 3. The gas bubbles out of the fluid and are released all the way through the canal. A liquid flows into the outlet nozzle 3, passing through the channels only and cleared of the gas dissolved in it. The ultrasonic transducers 6 are covered with an elastic material 7 in order to reduce the effect of cavitation erosion on them. Bottom can

be made of sections aligned with one another, which simplifies its manufacture. In order to improve the performance of the sections can be installed through

one at an angle to the main fluid flow. In this case, the deaerated liquid rises upward through the channels, and the bubbles of evolved gas quickly leave the deaeration zone under the action of the common flow.

fluid.

The proposed device allows to degas the liquid all the way through the channels of the device, ensuring that the liquid completely purified from the gas is obtained at the outlet, which makes it possible to increase the rate at which the liquid passes through the channels of the device without reducing the quality of the product.

Claims (4)

1. A device for degassing a fluid, including a tank with outlet and inlet nozzles and a drainage tube, ultrasonic transducers and a radiating bottom surface, characterized in that, in order to increase productivity, the bottom is made in the form of a longitudinal comb, between which projections are placed ultrasonic transducers, with the outlet nozzle located below the upper edge of the projections. 2. The device according to claim 1, characterized in that the ultrasonic transducers are coated with elastic material. 3. The device according to claim 1, characterized by the fact that, in order to improve manufacturability, the bottom is made of separate ones joined together along the device sections. 4. The device according to claim 3, characterized in that the sections through one set at an angle to the horizontal. GK four Aa Thebes. g 1 P ft / 2J V