RU217322U1 - Liquid aeration device - Google Patents

Abstract

The utility model relates to devices for biological and chemical water purification and can be used in drinking water purification processes. The liquid aeration device comprises a liquid supply pipeline connected to a gas supply ejector, a tubular mixer and a contact container coaxially installed in the housing, gas-saturated liquid and excess gas outlets. The device is made with a three-way system of channels connected in series with each other, in which the mixer forms the first channel of the downward flow of the gas-liquid mixture, the cavity between the outer wall of the mixer and the inner wall of the contact container forms the ascending channel of the gas-liquid mixture, and the cavity between the outer wall of the contact container and the inner wall of the housing forms the second channel of the downward flow of the gas-liquid mixture. EFFECT: improved saturation of liquid with gas by increasing the contact time of liquid and gas. 1 ill.

Description

The utility model relates to devices for biological and chemical water purification and can be used in drinking water purification processes.

A device for water purification is known (RF patent No. 2453506, publ. 06/20/2012), including a cylindrical chamber for mixing the flow of purified water with air, an air supply pipe directed to the center of the end of the chamber, a container for collecting insoluble impurities and separate outlets from the purified water device and insoluble impurities. The cylindrical mixing chamber is closed on top with a lid, through the center of which an air supply pipe is installed. The cylindrical mixing chamber is divided into an upper mass transfer chamber and a lower mass transfer chamber by means of a baffle with a coaxial hole relative to the air supply pipe and bypass channels along the periphery. The lower mass transfer chamber is formed in the lower part by the end face of the cylindrical mixing chamber and is provided with at least two tangential branch pipes for supplying treated water and swirling the water flow. The partition has bypass channels along the periphery to pass clots and solid inclusions into the upper mass transfer chamber. In the side surface of the upper mass transfer chamber, a permeable wall is made for the exit of the treated water flow into a container of a larger volume, in which at least one cylindrical mixing chamber is installed. In the lower part of the tank there is a branch pipe for removing the formed insoluble substances and a clean water pipe, and in the upper part of the tank there is a branch pipe for exhaust air.

The disadvantage of the known solution is the complexity of the design and large dimensions of the device.

Known installation for the treatment of wastewater (RF patent No. 2179157, publ. 10.02.2002), including a vertical pipe with a separation part. The vertical pipe in the lower part is connected to the tank, and in the upper part of the pipe there is a nozzle with a shell of smaller diameter fixed above it. The pipeline supplying air is connected to the annular gap between the surfaces of the nozzle and the pipe. The lower part of the vertical pipe is made in the form of a cone with a smaller base facing downwards and is connected to the container to form a cavity between the cone and the walls of the container. An ejector is placed on the discharge pipeline. The treated water circulation circuit contains a pump, a suction pipeline, and a discharge pipeline.

The disadvantage of the known solution is the lack of efficiency of the oxidation of impurities due to the short contact time of the liquid and gas.

A known installation for saturating a liquid with gas (RF patent No. 2046759, publ. 27.10.1995), including a pipeline for supplying a gas-liquid mixture under pressure, a downstream pipeline with ejectors installed on it for recirculation of the first upward flow and recirculation of undissolved gas, pipelines of the first upward flow, a second upflow, removing the gas-saturated liquid and excess gas, and recirculating the undissolved gas.

The technical objective of the utility model is to improve the quality of liquid purification and liquid saturation with gas.

The technical result achieved by the utility model is to improve the saturation of the liquid with gas by increasing the contact time of the liquid and gas.

The technical result is achieved in that the liquid aeration device comprises a liquid supply pipeline connected to a gas supply ejector, a tubular mixer and a contact container coaxially installed in the housing, gas-saturated liquid and excess gas outlets, while the device is made with a three-way system connected in series with each other. another channel, in which, in which the mixer forms the first channel of the downward flow of the gas-liquid mixture, the cavity between the outer wall of the mixer and the inner wall of the contact container forms the ascending channel of the gas-liquid mixture, and the cavity between the outer wall of the contact container and the inner wall of the housing forms the second channel of the downward flow of the gas-liquid mixtures.

The liquid aeration device comprises a contact container installed in a hollow housing, inside which a tubular mixer is placed. This design provides for the separation of liquid flows with the formation of downward and upward liquid flows and an increase in the liquid-gas contact time for the most efficient saturation of the liquid with gas and the oxidation of impurities. The gas is introduced into the liquid using an ejector, which is a Venturi tube. The aeration system is integrated into the contact container, which excludes connecting pipelines between the aerator and the contact container, thereby reducing the resistance to water flow and ensuring maximum compactness of the device. The volume of the body of the aerator device is selected based on the required exposure time and the required performance.

The utility model is shown in the following figures:

in fig. 1 shows a schematic diagram of a device for aerating water.

The water aeration device includes a coaxially arranged hollow body 1, a contact container 2 and a mixer 3. The mixer 3 is connected to the water supply valve 5 via a pipeline 4. Pipeline 4 has an ejector 6 in the form of a Venturi tube for gas supply, where a gas supply pipe, a flowmeter 7 for controlling the rate of liquid supply and a pressure gauge 8 are made on the narrowed section.

The mixer 3 forms the first channel of the downward flow of the gas-liquid mixture, the cavity between the outer wall of the mixer 3 and the inner wall of the contact container 2 forms the ascending channel of the gas-liquid mixture, and the cavity between the outer wall of the contact container 2 and the inner wall of the hollow body 1 forms the second channel of the downward flow of the gas-liquid mixture.

A block of level sensors 9, an excess gas removal valve 10 and an overflow pipe 11 are installed in the upper part of the housing. Liquid 12 saturated with gas is drained in the lower part of the housing.

Description of the device

The controlled fluid flow, under pressure, enters the ejector 6, made in the form of a Venturi tube, through the pipeline 4, where a negative pressure is formed at the gas inlet at the narrowed section. If air oxygen is used as an oxidizing agent, then air injection by an additional device is not required at the gas inlet. Air is sucked in by the vacuum created by the ejection of the fluid flow.

A mixture of small gas and water bubbles passes under pressure down the mixer pipe 3 to the bottom of the housing. Further, the gas-liquid mixture passes in the opposite direction along the separation pipe formed by the outer wall of the mixer 3 and the inner wall of the contact container 2. The flow of the gas-liquid mixture rises and overflows through the upper edge of the contact container 2 towards the liquid outlet to the consumer. The three-way system forms an ordered liquid flow, does not allow mixing of the incoming and outgoing flows, which ensures an increase in the contact time of gas bubbles and liquid and, accordingly, improved saturation of the entire liquid with gas.

When the liquid level, determined by the level sensor unit 9, in the device is higher than the specified one, the excess is drained through the overflow pipe 11. Undissolved gas in the form of small air bubbles floats to the surface and is removed through the excess gas removal valve 10 installed in the upper part of the body 1.

Claims (1)

A device for aerating a liquid, containing channels for descending and ascending flows of a gas-liquid mixture, outlets for a gas-saturated liquid and excess gas, characterized in that it contains a liquid supply pipeline connected to a gas supply ejector, a tubular mixer installed coaxially in the housing, connected to the liquid supply pipeline, and a contact container, while the device is made with a three-way system of channels connected in series with each other, in which the mixer forms the first channel of the downward flow of the gas-liquid mixture, the cavity between the outer wall of the mixer and the inner wall of the contact container forms an ascending channel of the gas-liquid mixture, and the cavity between the outer wall contact container and the inner wall of the housing forms the second channel of the downward flow of the gas-liquid mixture.

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