JPS5816928B2 - Device for dispersing fluid in liquid - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for dispersing liquids, particularly air containing a certain amount of ozone, in water.

Such devices include a vertical pipe extending from above the liquid level, a fan placed in the upper part of this pipe and feeding air under pressure, and a coaxial relation 1 with the lower part of the vertical pipe.
Devices are known in which air or other treatment gas to be ozonized is introduced into a liquid contained in a tank by means of a rotary spreader or diffuser arranged in this manner and rotated by a motor.

At present, despite various improvements.

Such known devices do not ensure a sufficiently intimate mixing of ionizable air and water and, as a result, a high utilization rate of ozone.

The aim of the invention is to overcome this deficiency.

The present invention therefore provides: a tank containing a liquid; an open-ended fluid supply pipe extending into said tank for immersion in said liquid; and a fluid supply pipe coaxial with said distal end of said supply pipe. and communicates with the distal end of the supply tube through a central inlet.

a centrifugal pump for discharging the liquid from the supply pipe into the liquid surrounding the pump; a liquid fluid introduction enclosure coaxial with the two, the enclosure having a substantially truncated conical peripheral surface, a large upper base surface, and a small lower base surface. and one lower end of the supply pipe near the upper large base is connected to the centrifugal pump inlet near the lower base; the end of the supply pipe is connected to the surrounding wall. penetrating into the body but terminating before the inlet of said centrifugal pump; said enclosure having in its upper part an orifice for the introduction of said liquid; Due to its smaller size, the enclosure has 1 smaller size during operation of the dispersion device.
A reduced pressure is created and the enclosure thus draws fluid from the supply tube and liquid from the orifice to form an emulsion of the fluid and the liquid, which emulsion is pumped into the tank by the centrifugal pump. A device is provided, characterized in that one of the liquids is discharged within the liquid.

This device has an essential pot, 1 vertical pipe that can be immersed in a liquid tank, 1. A surrounding wall body for liquid fluid introduction to which the lower part of the pipe 1 is connected 2. Centrifugal pump wheel rotatable inside the diffuser 4 3. It also consists of an electric motor 5 connected to drive a centrifugal pump wheel 3E and normally mounted on the bottom of the tank C (see FIG. 1).

The motor 5 may be a sealed motor, a motor with a submersible rotor, or any other motor capable of being submerged in liquid.

The diffuser 4 is a fixed blade 4c in which two parallel walls 4a and 4b extend radially between the outer circumferences of these parallel walls 4a and 4b and the outer circumference of the wheel 3 of the centrifugal pump.
They are interconnected by F.

The wheel 3 is a conventional wheel of a centrifugal pump of an appropriate shape, and is rotatably driven by a motor 5.
It consists of a movable radial blade 3a supported by -3bf (see FIG. 2).

The liquid fluid introduction enclosure includes a truncated cone-shaped surrounding wall 2a and a hole which constitutes the larger base of the enclosure and into which the lower end portion of the supply pipe coaxially penetrates by a specific vertical distance. 2
It consists of a flat upper base wall 2b provided with c.

Further features and advantages of the present invention of the enclosure will be apparent from the following description of the embodiments shown in the accompanying drawings.

The apparatus of the present invention can be used in order to diffuse the air for ozonizing the waste water, but it is placed in the tank C containing the liquid to be treated.

The small diameter base 2d, which constitutes a small base of the enclosure with a truncated cone-shaped peripheral wall, is open and connected to the central opening of the upper parallel wall 4a.

The truncated conical surrounding wall 2a of the surrounding wall body 2 is located near the base of the large diameter of the truncated cone and substantially at the height of the lower end of the tube 1.
It also has a number of liquid introduction orifices 2e, spaced apart horizontally by f on the circumference defined by the right-angled section of the truncated conical peripheral wall 2a.

However, the present invention is not intended to be limited to this arrangement of the liquid introduction orifices, and any other suitable arrangement of these orifices may be used to ensure that the flow through the tube 1 during operation is not limited to this. Any type of orifice 2f arranged around the upper base wall 2b can be used as long as it is possible to draw in 1 liter of gas.
can also be used (see Figure 3).

The device operates as follows: In the stationary state, the diffuser 4. The enclosure 2 and a portion of the tube 1 are filled with surrounding liquid up to the level of the liquid level.

When the motor 1 is energized, the motor drives the wheel 3.

Due to centrifugal force, the liquid is attracted to the center of the wheel and is forced outwards by the centrifugal pump.

The liquid in tube 1 is evacuated and gas is drawn violently through tube 1.

Liquid is drawn into the enclosure 2 through the introduction orifice 1, and in turn gas is drawn through the tube 1.

The higher the height of the liquid above the liquid introduction orifice, that is, the higher the water head, the greater the liquid introduction or suction effect.

A very violent swirling effect occurs inside the raw fluid introduction enclosure, which forms a gas-in-liquid emulsion.

This emulsion enters the wheel 3f and is violently ejected between the fixed blades 4c.

It will be appreciated that the liquid introduction orifice 2e must be small enough to create a vacuum within the enclosure 2.

The gas thus expands within the enclosure 2, which allows the gas to intimately mix with the liquid drawn through the orifice 2, after which this mixture is transferred to the wheel 3.
Compressed with .

released.

Furthermore, regarding the prior art device 1. Since gas and liquid are mixed in a diffuser, the gas is pressurized at the point where it appears and one liquid is sent, which has the opposite effect of improving the degree of mixing, whereas the previous phenomenon is the real one. It may be considered that the device according to Invention 1 is superior.

It is understood that the present invention is not only intended for the introduction of ozonized air, but can also be applied to other applications, such as mixing between two liquids at widely different flow rates or between a powdered product and a liquid. It should be.

Although the device according to the present invention has many advantages.

This is because the present invention specifically allows the following.

Namely, the device of the present invention: (1) is easy to assemble and handle, especially because of the regular axial symmetry and because of the presence of the supply tube extending beyond the liquid level;

(2) introducing gas under reduced pressure, and as a result,
It is possible to introduce large volumes of gas.

(3) Since the entire mixture is under high pressure at the point of the wheel where the liquid-expanded gas mixture is introduced, an optimal effect of introducing the gas into the liquid is achieved.

(4) It is possible to forcefully expel gas-liquid mixtures (thus small volumes) under pressure into the surrounding liquid.

(5) Changing the characteristic values of the assembly consisting of the wheel and the fixed blade and the characteristic values of the surrounding wall for introducing the raw fluid 1. As a result, the degree of gas depressurization can be changed over a wide range.

(6) By changing the characteristic values of the assembly consisting of the wheel and the fixed blade and the characteristic values of the surrounding wall for introducing raw fluid, the force for discharging the mixture into the liquid can be changed over a wide range. .

[Brief explanation of the drawing]

1 is a schematic longitudinal sectional view of a device according to the present invention 1, FIG. 2 is a sectional view taken along line 2-2 in FIG. 3 is a schematic front axial cross-sectional view of a portion of another embodiment of the apparatus; FIG. L...liquid, C...tank, 1...
...Pipe, 2...- Raw fluid introduction surrounding wall body, 2a.
... - truncated cone-shaped surrounding wall. 2b...-Flat upper base wall, 2d... Opening, 2e. 2f... Orifice for liquid introduction, 3...
·wheel. 3a...Blade, 3b...-Shaft,
4...Diffuser, 4a...--Upper parallel wall,
4b...Lower parallel wall, 4C...-Fixed blade, 5...Motor.

Claims (1)

[Scope of Claims] 1. A tank containing a liquid, an open-ended fluid supply pipe extending into the tank for immersion in the liquid, and a fluid supply pipe coaxial with the distal end of the supply pipe. , a centrifugal pump communicating with the distal end of the supply tube through a central inlet for ejecting the fluid from the supply tube into a liquid surrounding the pump. Place a device E for dispersing a liquid. The dispersing device comprises a liquid fluid introduction enclosure coaxial with the supply tube end and the centrifugal pump inlet and sealingly connected thereto. The surrounding wall body has a substantially truncated conical peripheral surface, a large upper base surface, and a small lower base surface, and is connected to the lower end 1 of the supply pipe near the upper large base surface, and the upper sound 11k.
It is connected to the centrifugal pump inlet near the Jh base surface. The distal end of the supply pipe penetrates into the enclosure, but terminates before the inlet of the centrifugal pump. The surrounding wall has an orifice in its upper portion for introducing the liquid. Since the orifice has dimensions that are one tenth smaller in relation to the flow f passing through the centrifugal pump. during operation of the dispersion device a reduced pressure is created within the enclosure and thus draws the fluid from the supply tube and the liquid from the orifice into the enclosure to form an emulsion of the fluid and the liquid; The emulsion is discharged by the centrifugal pump 1 into the liquid in the tank. A device characterized by: 2. The orifice is located in a portion of the enclosure substantially between the front upper large base surface of the enclosure and a horizontal plane containing the open end of the supply pipe within the enclosure. The device according to scope 1. 3. The surrounding wall body includes a truncated conical surrounding wall and a horizontal wall forming the upper large base surface, and the orifice is disposed in the horizontal wall t near its outer edge. The device according to scope 1. 4. The device according to claim 1, wherein the orifices are located at one horizontal interval on a circumference defined by an orthogonal cross section of a truncated conical peripheral wall. 5. The centrifugal pump is a centrifugal pump wheel. An apparatus according to any one of claims 2 to 4, comprising a motor immersed in a liquid and connected to a motor capable of driving said wheel, and a diffuser to which said wheel is attached. . 6. an upper wall, a lower wall, in which the diffuser is provided with a central aperture connecting the lower base of the enclosure; 6. The device of claim 5, comprising fixed blades interconnecting the upper and lower walls of the diffuser. The device according to any one of claims 1 to 6, which is symmetrical about the γ axis.