KR20030096534A - Apparatus for mixing and dissolving oxygen - Google Patents

Abstract

PURPOSE: An apparatus for mixing and dissolving oxygen is provided to increase dissolving ratio of oxygen into water, in which stripping of dissolved air into atmosphere is rarely occurred, or stripping of dissolved air is slowly proceeded for a long period of time even if it is occurred so that solution of oxygen into water is stably maintained. CONSTITUTION: The apparatus comprises a supply pump(120) for supplying water from an outer water source by rotation of driving motor(110); a mixing can(130) on an end part of both sides of which inlet(132) and outlet(134) are respectively formed, and in which hollow(131) is formed; a water supply pipe(140) connected between the supply pump(120) and the inlet(132); upper partition plate(136) and lower partition plate(138) arranged inside the hollow(131) of the mixing can(130); an oxygen supply nozzle(152) installed at the side of the inlet(132) of the mixing can(130); and a discharge pressure gauge(154) installed at the side of the outlet(134) of the mixing can(130), wherein a plurality of ceramic solid balls(150) are stacked in the hollow(131) between the upper partition plate(136) and lower partition plate(138) in such a way that the plurality of ceramic solid balls(150) are moved according to movement of water, and an inverter(170) is installed at the driving motor(110) so that the inverter(170) controls rotation of the driving motor(110).

Description

Oxygen Mixing and Dissolving Equipment {APPARATUS FOR MIXING AND DISSOLVING OXYGEN}

The present invention relates to an oxygen mixed dissolving device for increasing the amount of dissolved oxygen in water.

In general, water purification plants and fish farms use aeration devices or oxygen supply devices to increase the amount of oxygen in the water.

Conventionally, various techniques have been developed to increase the amount of dissolved oxygen in water. Representatively, Application No. 10-1998-29741, filed July 23, 1998 by Jo Jung Sun, discloses a multipurpose mixed dissolver.

Referring to FIG. 4, the mixer 1 is composed of a case 7, a space 8, and a diaphragm 9. In the case 7, the connection sockets 3 and 3 ′ are coupled to both ends of the exterior 2 to form an inlet 4 and an outlet 5, and a hexagon grille 6 is provided inside. The space 8 is formed at a predetermined position of the multistage hexagon grille 6. The diaphragm 9 is stacked between the inlet 4 and the space 8 so that the hexagonal grille 6 is shifted up and down, and a plurality of through holes (not shown) are formed at the bottom. Porous pieces 11 and 11 'are positioned on the left and right sides of the grill case 7 installed in the exterior 2, and fixing rings 12 and 12' are provided on both sides of the porous pieces 11 and 11 '. It is interposed. The pressure gauge connecting hole (not shown) and the gas nozzle 14 are installed at the inlet 4 side of the case 7 front.

Such a conventional mixer 1 is configured to increase the amount of dissolved oxygen while water passes through a number of hexagonal grills 6. That is, when the mixed liquid and gas, liquid and liquid, chemicals and chemicals pass through the mixer's grill, the contact area is increased and mixed in the hexagonal grill layer to dissolve oxygen when supplied to the purified water treatment plant, wastewater treatment plant and fish farm. There was an effect to increase the amount of oxygen. However, when using such a conventional mixer (1), extremely fine air bubbles are generated in the process of passing the injected oxygen between the fixed hexagonal grill (6), and the oxygen bubbles thus produced are dissolved in a short contact with water. Because of this, not only deaeration occurs rapidly, but also there is a defect in that dissolved oxygen in water cannot be stably maintained. In addition, there was a problem in that the heavy metal in the water passed between the hexagonal grill (6) and the sterilization of harmful bacteria can not be sterilized.

The present invention has been made to solve the above problems, the object of the present invention is to increase the dissolved rate of oxygen in the water while there is almost no deaeration phenomenon, even if it is degassed proceeds slowly over a long time to maintain a stable solution It is to provide an oxygen mixed dissolving device.

Another object of the present invention is to provide an oxygen mixed dissolving apparatus capable of adsorbing and removing heavy metals contained in water and sterilizing harmful bacteria.

Oxygen mixture dissolving device according to the present invention for achieving the above object, the supply pump for supplying water from the external water source by the rotation of the drive motor, and the inlet and outlet are formed at both ends and the hollow is formed inside A mixing passage, a water supply pipe communicating between the supply pump and the inlet, an upper diaphragm and a lower diaphragm disposed in the hollow of the mixing cylinder, an oxygen supply nozzle installed at the inlet side of the mixing cylinder, In the oxygen mixed dissolving device consisting of a discharge pressure gauge installed on the outlet side, a plurality of ceramic solid balls are stacked in the hollow between the upper plate and the lower plate so as to move in accordance with the movement of water, the drive motor is an inverter Is installed to control the rotation of the drive motor.

The mixing cylinder has at least one or more so as to extend the contact area and the friction length, and the mixing cylinders communicate with the connecting pipe.

As described above, in the oxygen mixed dissolving device according to the preferred embodiment of the present invention, the supply pump is connected to the drive motor and supplies water from an external water source by the rotation of the drive motor. The mixing cylinder has an inlet and an outlet at both ends, respectively, and a hollow is formed therein. The water supply pipe connects between the supply pump and the inlet of the mixing vessel so that water provided from an external water source is introduced into the mixing vessel through the inlet. A plurality of ceramic solid balls are stacked in the hollow of the mixing cylinder so as to flow as the water moves. In addition, an oxygen supply nozzle is provided at the inlet side of the mixing cylinder, and a discharge pressure gauge is provided at the outlet side of the mixing cylinder. The drive motor is provided with an inverter to control the rotation of the drive motor. Moreover, the mixing cylinder has at least one or more to widen the contact area and the friction length, and is connected by a connecting pipe between the mixing cylinders. Due to this structure, the oxygen-mixing dissolving device can stabilize the oxygen dissolved solution in the water by greatly increasing the amount of dissolved oxygen in the water.

1 is a schematic block diagram showing an oxygen mixing dissolution device showing the inside of the mixing cylinder of one side according to a preferred embodiment of the present invention;

FIG. 2 shows the upper and lower diaphragms in FIG. 1; FIG.

3 is a perspective view of the ceramic solid ball in FIG. 1; And

Figure 4 is a schematic configuration diagram showing an oxygen mixing dissolving device of the prior art.

* Description of the symbols for the main parts of the drawings *

100: oxygen mixing dissolving device

110: drive motor 120: supply pump

130: mixing barrel 132: inlet

134: exit 136: upper plate

138: lower plate 140: water pipe

150: ceramic solid ball 152: oxygen supply nozzle

154 discharge pressure gauge 156 connector

160: discharge pipe 162: discharge valve

170: inverter

BRIEF DESCRIPTION OF THE DRAWINGS The objects of the present invention will become more apparent from the following detailed description of preferred embodiments with reference to the attached drawings.

Hereinafter, with reference to the accompanying drawings will be described in detail with respect to the oxygen mixed dissolution device according to a preferred embodiment of the present invention.

1 to 3, in the oxygen mixing dissolving apparatus 100 according to the present invention, a driving motor 110 and a supply pump 120 are installed in the mixing cylinder 130, and the water supply pipe 140 is a supply pump ( The communication between the 120 and the mixing cylinder 130.

The supply pump 120 is connected to the drive motor 110 and supplies water from an external water source by the rotation of the drive motor 110.

The mixing cylinder 130 has an inlet 132 and an outlet 134 protruding from both ends thereof, respectively. The hollow 131 is formed in the mixing cylinder 130.

The water supply pipe 140 connects between the supply pump 120 and the inlet 132 of the mixing cylinder 130. The water supply pipe 140 allows the water provided from the external water source to flow into the mixing vessel 130 through the inlet 132 of the mixing vessel 130.

The upper diaphragm 136 and the lower diaphragm 138 are spaced apart from each other in the hollow 131 of the mixing vessel 130 (see FIG. 2). The upper diaphragm 136 is an outlet 134 of the mixing vessel 130. It is installed in the side, the lower diaphragm 138 is installed in the inlet 132 side of the mixing cylinder 130. A plurality of ceramic solid balls 150 are embedded between the upper diaphragm 136 and the lower diaphragm 138 in the hollow 131 of the mixing barrel 130.

At this time, the ceramic solid ball 150 is not completely filled between the upper plate 136 and the lower plate 138 is filled to be able to flow up and down by water. The ceramic three-dimensional ball 150 flows in accordance with the movement of water in the hollow 131. Ceramic three-dimensional ball 150 may be in the form of a sphere, the outer surface may be formed by changing the polygonal shape, such as hexagon, octagon ... etc. to widen the contact area. (See Fig. 3) Double, hexagon is preferable. However, the reason is that when the ceramic three-dimensional balls 150 are stacked, the gap between the ceramic three-dimensional balls 150 is extremely fine and shortest. As a result, the bubbles of oxygen are ultra-fine, the contact area between water and oxygen is maximized, the friction length is increased, and the stagnation time of water and oxygen is increased, so that the oxygen dissolution rate is increased. Also, in this state, the ceramic solid balls 150 are flowed by water, so that a large amount of anions are continuously released from the pores in the ceramic solid balls 150, and as shown in the chemical reaction formula of the anions, the anions are very fine. It acts as a bonding force that draws oxygen bubbles electrically, so that the amount of dissolved oxygen in the water is increased and the dissolved itself is stabilized.

The drive motor 110 is provided with an inverter 170, and the inverter 170 controls the rotation of the drive motor 110 to adjust the water discharge amount of the supply pump 120. That is, the inverter 170 of the oxygen mixing and dissolving apparatus 100 of the present invention has a high water discharge amount and is preferably set to a low pressure. This is to increase the dissolution rate of water supplied into the hollow 131.

With reference to the accompanying drawings will be described the operation of the oxygen mixing dissolution device according to a preferred embodiment of the present invention having the structure as described above.

Referring back to FIG. 1, the supply pump 120 is operated by driving the drive motor 110. The supply pump 120 receives water from an external water source and sends the water to the water supply pipe 140. Thereafter, the water is moved along the water supply pipe 140 and injected into the hollow 131 of the mixing cylinder 130 through the inlet 132 of the mixing cylinder 130. Subsequently, water passes through the lower diaphragm 138, the ceramic solid ball 150, and the upper diaphragm 136 in the hollow 131.

In this process, the water and oxygen supplied to the hollow 131 of the mixing cylinder 130 is passed while hitting each ceramic three-dimensional ball 150, in the process oxygen in the water is bubbled to the ultra-fine size. In this process, the ceramic three-dimensional ball 150 is flowed by the atomization of oxygen by friction and contact with each other while the water and the oxygen is smoothly mixed. At this time, anion is generated in the pores of the ceramic three-dimensional ball 150, the affinity of the anion and the atomized oxygen is increased affinity with water, the oxygen is mixed and dissolved in water well. As a result, dissolved oxygen in the water is kept in a stable state.

Here, the upper diaphragm 136 and the lower diaphragm 138 serve to keep the ceramic solid balls 150 from being separated therebetween. Finally, the water is discharged to the outlet 134 of the mixing cylinder 130 through the upper diaphragm 136.

Ceramic three-dimensional ball 150 according to the present invention was configured by agglomerating the usual elvan and loess. Double elvan is composed of the components as shown in Table 1 below.

As shown in Table 1, two samples of elvan rock (M-1, M-2) are shown. It can be seen that SiO ₂ accounts for most of these components at 65% or more. Based on this, elvan and water react to produce the following chemical reaction.

In the above scheme, Compound I reacts with water to produce Compound II, and Compound II reacts with water to produce Compound III.

In this state, when water is injected into the hollow 131 of the mixing cylinder 130 filled with a plurality of ceramic three-dimensional ball 150 according to the present invention, each of the ceramic three-dimensional ball 150 flows to generate anion. As the anion has an increased affinity with water and oxygen is easily dissolved in water, the amount of dissolved oxygen in the water has increased.

In addition, an oxygen supply nozzle 152 is installed at the inlet 132 side of the mixing cylinder 130. Oxygen is supplied to the oxygen supply nozzle 152 by an oxygen generator not shown. In addition, a discharge pressure gauge 154 is provided on the outlet 134 side of the mixing cylinder 130. The discharge pressure gauge 154 is displayed so that the pressure in the hollow 131 of the mixing cylinder 130 can be seen from the outside. As such, when oxygen is forcibly injected into the hollow 131 of the mixing cylinder 130, the amount of dissolved oxygen in the water may be further increased. At this time, the oxygen pressure through the oxygen supply nozzle 152 and the discharge pressure represented by the discharge pressure gauge 154 are adjusted in proportion to each other so that oxygen can be easily supplied into the water.

On the other hand, the mixing cylinder 130 is provided with at least one or more to widen the contact area and the friction length, it is communicated by the connecting pipe 156 between the mixing cylinder 130. In other words, the connecting pipe 156 is to connect the outlet 134 of one mixing cylinder 130 and the inlet 132 of the other mixing cylinder 130 with each other. The outlet 134 of the other mixing barrel 130 may be provided with a discharge pipe 160 having a pressure control valve 162. The pressure control valve 162 is installed to adjust the pressure in the hollow 131 of the mixing cylinder 130. In this way, the water has a long contact area and a contact time with the ceramic solid ball 150, and can greatly increase the amount of dissolved oxygen in the water.

The theoretical basis to which the oxygen-mixing dissolution apparatus 100 of the present invention is applied may be interpreted as Lewis' two-film theory.

(dm / dt: mass transfer rate, Kg: diffusion coefficient of gas, A: area where gas diffuses through it, Cs: saturation concentration of gas in solution, C: concentration of gas in solution)

① dm / dt = V × dc / dt = KgA (Cs-C)

(V × dc / dt: rate of change of concentration, Cs-C: deficiency until saturation)

As can be seen from the above equation, the mass transfer rate can be increased by maximizing the contact area of the material to be mixed compared to the diffusion coefficient and saturation deficiency of the gas. Thus, the theory can be applied to mixtures of materials with little reactivity and to different materials. That is, even in the same phase or in different phases, materials having high reactivity may maximize the contact area between materials to be mixed in the mixing process in order to increase the reaction speed and minimize the variation. Oxygen mixing and dissolving apparatus 100 of the present invention to stably dissolve oxygen in water by maximizing the contact area between the materials to be mixed.

As described above in detail, the oxygen mixing and dissolving device according to the present invention hits a plurality of ceramic three-dimensional balls while water and oxygen provided from an external water source pass through the mixing vessel, and bubbles oxygen in the water, thereby allowing the ceramic three-dimensional balls to flow. Since the bubbles of oxygen are atomized by friction and contact with each other to maximize the surface area of oxygen, the contact between water and oxygen increases, so that the dissolution rate is improved. In addition, since the atomized oxygen is electrically coupled to the anion of the ceramic ball, dissolved oxygen in the water is maintained in a stable state.

In addition, the anion is generated by the properties of the ceramic three-dimensional ball itself, the combination of the chemical structure of the water and oxygen is made to stably dissolve oxygen in the water, adsorption and removal of heavy metals in the water and sterilization of harmful bacteria have.

While the invention has been shown and described with respect to certain preferred embodiments thereof, the invention is not limited to the embodiments described above, and is typically defined in the art to which the invention pertains without departing from the spirit of the invention as claimed in the claims. Anyone with knowledge of the world can make many variations.

Claims (2)

By the rotation of the drive motor 110, a supply pump 120 for supplying water from an external water source, and an inlet 132 and an outlet 134 are formed at both ends, respectively, and a hollow 131 is formed therein. The barrel 130, the water supply pipe 140 communicating between the supply pump 120 and the inlet 132, and the upper plate 136 and the lower portion disposed in the hollow 131 of the mixing cylinder 130. A diaphragm 138, an oxygen supply nozzle 152 provided at the inlet 132 side of the mixing cylinder 130, and a discharge pressure gauge 154 provided at the outlet 134 side of the mixing cylinder 130. In the oxygen mixed dissolution device consisting of, A plurality of ceramic solid balls 150 are stacked in the hollow 131 between the upper diaphragm 136 and the lower diaphragm 138 so as to move as water moves, and the inverter 170 includes an inverter 170. ) Is installed to control the rotation of the drive motor 110, oxygen mixing dissolution device, characterized in that. According to claim 1, wherein the mixing cylinder 130 has at least one or more so as to extend the contact area and the friction length, the mixing cylinder 130 is characterized in that the communication between the connection tube 156 Mixing melter.