KR200289287Y1 - Diffuser of Double Pipes for Pressurized Water - Google Patents

Abstract

The double pipe pressurized water injector (diffuser) is a device that injects pressurized water in which air or ozone is dissolved in the dissolved air flotation method or the dissolved ozone flotation method. As air dissolved in the pressurized water injected from the dissolved air flotation device is exposed to atmospheric pressure, numerous microbubbles are generated. Lev) above the water surface. If ozone is used instead of air, microbubbles of ozone are generated and the surface area of water in contact with ozone is greatly increased, so pollutants can be effectively treated. The double pipe injector used at this time can effectively generate more micro-bubbles than the spray by the nozzle generally used in the prior art and the device is simple. The double pipe injection system consists of two inner pipes and an outer pipe. In order to maintain more than 3 atm in the inner pipe, the number of holes was drilled and the outer pipe was drilled a larger number of holes in the inner pipe to serve as a nozzle corresponding to the practical prior art. Since the fine bubbles are injected through a larger number of holes than the conventional nozzle number, the contact efficiency between the fine bubbles and the floc can be increased. In addition, the contact point between the microbubble and the floc is high, since the injection position or number of the microbubble can be freely determined.

Description

Diffuser of Double Pipes for Pressurized Water

Double pipe pressurized water injection system is used in dissolved air flotation facility or dissolved ozone flotation facility. The pressurized water injection device used in the dissolved air flotation device of FIG. 5 is a device corresponding to 7. In the conventional pressurized water injector, the pressurized water is directly injected into the water of the reactor by the nozzle as shown in FIG. However, when the pressurized water is directly injected into the water, the floc (floating mass agglomerated by the flocculant formed in the slow mixing tank corresponding to 1 of FIG. 5) is likely to be broken by the pressurized water, and the flow rate of the water to be used in the facility is high. Once determined, it is difficult to use a large number of nozzles. If the number of nozzles is limited, the contact efficiency with the floc evenly distributed in the water may decrease because microbubbles generated through the nozzles are generated only near the nozzles. However, the double pipe injector in FIG. 1 is pressurized water is injected between the inner pipe and the outer pipe, even if the spraying location is limited, because the outer pipe can make a large number of micro-bubble spouts can be injected evenly to the reactor This can increase the contact efficiency with the floc. In addition, the spray by the double pipe is protected from the cracks because the microbubbles are injected into the water while the pressure of the pressurized water is already lowered. The reason why the number of nozzles of FIG. 4 used in the pressurized water jet of FIG. 1 or conventionally is limited is that the pressure from the pressure tank of FIG. 5 to the diffuser must be kept constant. Here, in order to generate as many microbubbles as effectively as possible, the energy (pressure) of the pressurized water must be consumed as soon as possible. In the dual pipe pressurized water injection device, micro-bubbles are effectively generated because high energy water spouted from the pressurized water injection hole in the inner pipe of FIG. 1 hits the outer pipe and consumes energy in an instant. Figure 6 shows the energy dissipation phenomenon with respect to the operation phenomenon of the pressurized water injection device proposed in this utility model and the injection device for the existing product.

When spraying the pressurized water by the diffuser corresponding to 7 of FIG. To generate a lot of microbubbles, the energy (pressure) of the pressurized water must be consumed as soon as possible. Therefore, while maintaining a constant pressure from the pressure tank corresponding to 4 of FIG. 5 to the diffuser, it is a problem to devise an apparatus for generating as many microbubbles as possible and evenly spraying the generated microbubbles into the reactor.

1 is a detailed view of a double pipe pressurized water injection device (diffuser).

1: inner pipe 2: outer pipe 3: pressurized water jet

4: micro-bubble nozzle

2 is a detail view of the inner pipe.

1: inner pipe 3: pressurized water jet

3 is a detail view of the outer pipe.

2: outer pipe 4: microbubble nozzle

4 is a conventional large fuser.

1: diffuser body 2: pressurized water jet

5 is a schematic diagram of a dissolved air flotation device in which a pressurized water injection device (diffuser) is used.

1: slow mixing tank 2: reactor 3: flotation tank

4 pressure tank 5 compressor 6 pressure pump

7: Pressurized water injection device (diffuser) Fig. 6 is a detailed drawing comparing the pressurized water injection device proposed by this utility model with the pressurized water injection device of the existing product.

The purpose of this manuscript is to provide a pressurized injection device using a double pipe that can be easily manufactured and commercially manufactured with an excellent effect of generating microbubbles and an air generating floating device or an ozone generating floating device which are widely used in a water treatment device. As described above, with the fluid connection line such as air, ozone, and other liquids or gases, with the both ends of the inner pipe sealed, an appropriate amount of pressurized water jets (n) according to the size of the water treatment plant and the device are provided. The outer pipe illustrated in FIG. 3 has a microbubble injection hole (nx 1 to nx 100) in a sealed state on both ends, and a microbubble injector using a double pipe is used, resulting in excellent microbubble generating effect. After confirming this, we have completed the present invention. Depending on the environment and conditions of the facility, it may include a circular, square or polygonal shape, which is composed of two, having n pressurized water jets in the inner pipe and nx 1 to nx 100 microbubble jets in the outer pipe. If it is a structure, it falls within the scope of the present application.

The double pipe pressurized water injector can effectively generate more bubbles than the conventional pressurized water injector, and can evenly spray the generated microbubbles into the reactor of FIG. 5. In addition, since the pressure of the injected pressurized water is lowered inside the outer pipe, when the microbubbles are injected into the water, the floc formed in FIG. 5 is protected without breaking.

Claims (1)

In a pressurized injection device using a double pipe which generates fine bubbles by pressurized water used in a dissolved air flotation device or a dissolved ozone flotation device, The inner pipe has n pressurized water inlets with both ends sealed and an air supply line installed, and the outer pipe is charged with a double pipe injector with n x 1 to n x 100 microbubble inlets sealed at both ends.