KR20140035193A - Gas soluble device - Google Patents

Abstract

The present invention relates to a gas dissolving device for dissolved oxygen supply and water purification. The present invention includes a mixing nozzle (60) connected to the inlet of a mixing tank. The mixing nozzle comprises a nozzle tube (61) and a venturi type mixing unit (65). The gas dissolving device for dissolved oxygen supply and water purification according to one embodiment of the present invention includes a second dissolution tank (210) and a second dissolving device (200) consisting of first and second dissolution disks (220, 230) arranged inside the second dissolution tank.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a gas dissolving apparatus for supplying dissolved oxygen and purifying water,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas dissolving apparatus, and more particularly, to a gas dissolving apparatus for dissolving a gas such as ozone gas or oxygen into water and for purifying the water.

Ozone gas is used to purify contaminated water (including green algae) and to increase dissolved oxygen by strong oxidizing power, etc. It is used by dissolving in water through gas dissolving device.

Generally, the reaction of the gas and the liquid depends on the diffusion due to the contact of the vapor-liquid interface. Accordingly, various gas dissolving apparatuses have been developed to maximize the contact area of the liquid per unit volume of gas in order to expand the vapor-liquid interface. The most widely used gas dissolution reaction apparatus is a so-called bubble or diffuser apparatus, in which an object having small pores is placed in a liquid so that bubbles are generated so that the gas is mixed with the liquid in a bubble state. Such a bubble or diffuser has the advantage of being easily installed and easy to use, but has a disadvantage that it is limited in a simple system because the gas-liquid contact transfer efficiency is relatively low.

Conventional gas-fusing reactors induce mixing by focusing on the point where the gas is mixed with the liquid and reacting with the necessary gas in a separate tank for a long time. Therefore, it takes a considerable time to efficiently mix and react gas and liquid, and the dissolution tank becomes very large, which is inefficient and uneconomical.

Published Patent No. 10-2001-82678

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to solve the above problems, and to provide a gas dissolving apparatus for supplying dissolved oxygen for purifying a water and improving gas dissolution rate by prolonging the residence time of gas and water, The purpose is to provide a device.

The apparatus for dissolving dissolved oxygen and purifying water according to the present invention comprises a dissolving tank provided with an inlet and an outlet and provided with a space in which a gas containing water and ozone gas is introduced and the gas is dissolved; And a porous disk and a rotating disk disposed alternately and repeatedly in the axial direction along the axial direction of the dissolution tank and dissolving the gas in the water by changing the gas into fine bubbles.

The mixing nozzle includes a mixing port for introducing water, a gas inlet port and a mixing fluid outlet port. The mixing nozzle is connected to an inlet port of the dissolving tank and mixes the gas and water into the dissolving tank. A nozzle tube, and a venturi type mixing unit which is formed in the nozzle tube to have a diameter narrower than that of the other section and mixes the water to be introduced through the inlet of the water and the gas to be introduced through the inlet of the gas into the dissolving tank.

The present invention also relates to a secondary dissolving tank connected to an outlet of the dissolving tank to receive a mixed fluid discharged from the dissolving tank, a second dissolving tank connected to the discharge port of the dissolving tank, Wherein the first dissolving disk includes a guide for allowing the mixed fluid passing through the circulation hole to pass through after staying and forming a vortex.

According to the gas dissolving apparatus for supplying dissolved oxygen and purifying water of the present invention, a small amount of ozone gas and water are supplied to the next process through the fixed disk and the rotating disk to lengthen the residence time of ozone gas and water, It is possible to increase the dissolution rate of the ozone gas by changing the ozone gas into minute bubbles through the rotating disk, and thus the gas dissolving apparatus can be downsized and reliability can be improved.

1 is a perspective view of a gas dissolving apparatus for dissolved oxygen supply and water quality purification according to the present invention;
2 is a sectional view of a gas dissolving apparatus for dissolved oxygen supply and water quality purification according to the present invention.
3 is a front view of a fixed disk applied to a gas dissolving apparatus for dissolved oxygen supply and water quality purification according to the present invention.
4 is a front view of a rotating disk applied to a gas dissolving apparatus for dissolved oxygen supply and water quality purification according to the present invention.
5 is a sectional view of a mixing nozzle applied to a gas dissolving apparatus for dissolved oxygen supply and water quality purification according to the present invention.
6 is a state in which a gas dissolving apparatus for supplying dissolved oxygen and for purifying water is installed in the longitudinal direction according to the present invention.
FIG. 7 is an exemplary diagram showing a second dissolver applied to a gas dissolving apparatus for dissolved oxygen supply and water purification according to the present invention; FIG.
8 and 9 are front views showing the first and second dissolving discs of the second dissolver applied to the gas dissolving apparatus for the supply of dissolved oxygen and the purification of water, respectively, according to the present invention.

1 and 2, the gas dissolving apparatus 100 for dissolved oxygen supply and water purification according to the present invention includes water (water) and gas (ozone gas, oxygen and the like, A melting tank 10 for providing a space for introducing gas and dissolving gas in the water, and a fixing unit 10 which is alternately and repeatedly installed inside the dissolution tank 10 and changes the ozone gas into fine bubbles so as to be dissolved in the water A disk 20 and a rotating disk 30.

The dissolution tank 10 is hollow and has an inlet 11 and an outlet 12. The inlet (11) and outlet (12) may be tubular ports as shown in the drawings and may include any structure capable of being introduced and withdrawn, such as may be in the form of a hole.

Although the dissolution tank 10 has been shown so far as to be disposed in the lateral direction (the fixed disk 20 and the rotary disk 30 are in the longitudinal direction), as shown in FIG. 6, the dissolution tank 10 is arranged in the longitudinal direction (The fixed disk 20 and the rotary disk 30 may be in the transverse direction).

As shown in FIG. 1 and FIG. 3, the fixed disk 20 is formed to be porous to allow water and ozone gas to pass therethrough, and a plurality of fixed circulation holes 21 are formed in the center shaft through- A bearing for supporting the stationary disk 20 may be applied to the shaft hole 22 or the rotary shaft 40 And can be arranged in a radial pattern of a curved shape that does not match the radius.

The fixed disk 20 may be arranged in the direction of traversing the dissolving tank 10 in the dissolution tank 10 (in this case, the fixed disk 20 and the rotating disk 30 are arranged in the form of a screw, The ozone gas may stay and flow while forming a vortex so that the dissolving effect may be increased), and is fixed to the dissolving tank 10.

The fixed disk 20 can increase the dissolution efficiency by retarding (retarding) the flow of the ozone gas and the water and lengthening the residence time of the mixed fluid (ozone gas and water).

The fixation disk 20 and the dissolution tank 10 are fixedly connected to each other by a plurality of rings 13 such that the fixation disk 20 is interposed between the rings 13 . More specifically, a seating groove 13a facing inward is formed on one side of the left and right sides (reference in FIG. 2) of the ring 13 having a predetermined thickness, and the fixed disk 20 has a ring 13 Between the fixed disk 20 and the ring 13 opposed to the ozone gas and the water to prevent ozone gas and water from leaking through the gap between the ring 13 and the fixed disk 20, For example, an O-ring 14 is mounted.

The plurality of rings 13 may be successively clamped by two adjacent ones, and each boss may be formed to be coupled through a long bolt and a nut, and the fixed disk 20 may be coupled to the ring 13 Lt; / RTI >

The injection port 11 and the discharge port 12 may be formed in the ring 13 disposed at the leftmost and rightmost sides or the first and second caps 15 and 16 may be applied at the leftmost and rightmost sides. The ring 13 and the fixed disk 20 are arranged between the first and second caps 15 and 16 and are connected to the first cap 15 and the fixed disk 20 via long bolts and nuts, The second cap 16 can be integrated.

The rotary disk 30 is formed, for example, on a disk-shaped rotary disk main body, at the periphery of a rotary shaft 31 for receiving a rotary shaft 40, And a plurality of first and second cutting holes 32 and 33 for allowing ozone gas to pass therethrough.

2, the second cutting hole 33 is a hole which is opened at both the left and right sides and is opened to the periphery of the rotary disk 30, . That is, the first and second cutting holes 32 and 33 are divided only by the presence or absence of the dispersing portion 34.

The rotating disk 30 receives the rotational force through the rotating means (motor, rotating shaft 40, etc.) and rotates (rotational speed is 500 to 2,000 rpm, for example) while the first and second cutting holes 32, The fixed disk 20 and the rotary disk 30 are alternately repeatedly arranged so that the ozone gas is allowed to stay while changing the ozone gas into fine bubbles, .

The combination of the rotating disk 30 and the rotating shaft 40 can be achieved, for example, by clamping the rotating disk 30 on both sides of the rotating disk 30.

The clamp 50 includes two clamp pieces 51 and 52 and clamp pieces 51 and 52 for fastening the rotary disk 30 on both sides and a fastener 53 for fastening the rotary disk 30 interposed therebetween. . The two clamp pieces 51 and 52 are coupled to the rotary shaft 40 by a key system (a key projection, a key groove, a rotary shaft, a gear and the like, which are not shown in the drawings) so that the rotational force of the rotary shaft 40 is transmitted to the rotary disk 30 .

The peripheral portion of the rotating disk 40 is opposed to the inner peripheral surface of the dissolution tank 10 and the rotating disk 40 can be brought into contact with the inner peripheral surface of the dissolution tank 10 by a production error or a driving resistance, A packing of an elastic material may be applied to the periphery of the rotating disk 40. Alternatively, the size of the rotary disk 40 can be adjusted so that friction does not occur between the rotary disk 40 and the dissolving tank 10.

As shown in FIGS. 1 and 5, the mixing nozzle 60 is applied for rapid injection of water and ozone gas and increase in dissolution efficiency. The mixing nozzle 60 is a tube having a flow path formed therein and connected to the inlet 11 of the dissolution tank 10 and mixing water and ozone gas to be supplied to the dissolution tank 10, .

The mixing nozzle 60 includes a nozzle tube 61 having a water inlet 62 (connected to the water supply means), an ozone gas inlet 63 (connected to the ozone supply means) and a mixed fluid outlet 64, . For example, the nozzle pipe 61 is a straight pipe having a straight flow path, and the inlet port 62 of the water and the outlet port 64 of the mixed fluid are arranged in a straight line, and the inlet port 63 of the ozone gas is arranged in a direction perpendicular to the flow path .

In addition, a venturi-type mixing unit 65 is formed in the interior of the nozzle pipe 61 to increase the feeding speed when water and ozone gas are introduced through the nozzle pipe 61. The venturi type mixing portion 65 is formed in a part of the nozzle pipe 61 so as to have a smaller diameter than the other portions and the outlet port 62 of the inlet port 63 of the ozone gas Is formed at the joining portion. That is, as the water passes through the venturi-type mixing unit 65, the flow velocity is accelerated by changing the cross-sectional area, and ozone gas is introduced.

Further, a vortex screw 66 is applied to increase the dissolving efficiency of the water and the ozone gas in the process of injecting the mixed fluid through the mixing nozzle 60. The vortex screw 66 is formed (fixed or rotated) in the mixing pipe 61, between the venturi-type mixing unit 65 and the discharge end, and induces the water and the ozone gas to form a vortex, The dissolution efficiency is increased.

For example, the vortex screw 66 is formed inside a separate screw tube, and the screw tube is connected to the mixing tube 61 in a detachable manner .

Since the concentration varies depending on the amount of water and ozone, the mixing ratio thereof is not limited to a specific value.

The operation of the gas dissolving apparatus for the dissolved oxygen supply and the water quality purification according to the present invention constructed as described above is as follows (an example including the mixing nozzle 60 is described).

1. Mix water with ozone gas.

The water and the ozone gas are introduced into the mixing nozzle 60 through the inlet 62 for the water and the inlet 63 for the ozone gas. In this process, when the water flows through the venturi-type mixing unit 65 having a small diameter, the gas introduced through the ozone gas inlet port 63 is sucked into the flow path of the nozzle pipe 61 by the pressure difference and mixed. The mixed fluid flows inside the mixing pipe (61) while flowing in the form of a vortex along the vortex screw (66) to mix the water and the ozone gas.

2. Ozone gas dissolution.

The mixed fluid mixed through the mixing nozzle 60 is introduced into the dissolution tank 10 through the inlet 11 of the dissolution tank 10 so that the plurality of fixed disks 20 and the rotating disk 30 are alternately In this process, the ozone gas is converted into minute bubbles and dissolved in the water.

Specifically, the mixed fluid impinges on the first fixed disk 20, the mixed fluid is prevented from proceeding by the fixed disk 20, and a small amount of the mixed fluid flows into the fixed circulation hole 21, Through the fixed disk 20. That is, a large amount of mixed fluid does not flow temporarily but a small amount of mixed fluid flows to the next process, thereby increasing the dissolution efficiency of the ozone gas. Of course, some ozone gas collides with the fixed disk 20 and is converted into minute bubbles.

The mixed fluid that has passed through the fixed circulation hole 21 of the fixed disk 20 passes through the rotating disk 30 and the rotating disk 30 is rotated at right angles to the flowing direction of the mixed fluid, Only the ozone gas passes through the first and second cutting holes 32 and 33 and the dispersing portion 34 through the first and second cutting holes 32 and 33 and the dispersing portion 34, And is dispersed through the dispersing portion 34 and flows to the next fixed disk 20.

As described above, the fixed disk 20 has a long residence time of the mixed fluid, passes a small amount of the mixed fluid passing through the rotating disk 30, and rotates the fixed disk 20 and the rotating disk 30 alternately Ozone gas dissolves in the water while passing through.

FIG. 7 illustrates an example in which a secondary melting apparatus is applied to the present invention. The secondary melting apparatus 200 includes a secondary melting tank 210 having an inlet and an outlet, The first and second dissolving discs 220 and 230 are alternately repeatedly arranged and fixed.

As shown in FIGS. 7 and 8, the first dissolving disc 220 is plate-shaped, and a plurality of circulation holes 221 are formed. Since the first dissolving disc 220 is a plate material, the mixed fluid can pass through the circulation hole 221 quickly, which does not help dissolve the ozone gas. Therefore, the circulation hole 221 is provided with a guide 222) is applied. The first dissolving disk 220 preferably has a small amount of circulation holes 221 and a small area of circulation through the circulation holes 221 in order to increase the residence time of the mixed fluid.

The guide 222 may have a tubular shape and may have a structure having a tip at a tip thereof to interfere with the straightness of the mixed fluid so that the mixed fluid can form a vortex in the guide 222 and then pass therethrough. Although the guide 222 is illustrated as being formed in only one circulation hole 221 in the drawing, the guide 222 may be applied to all the circulation holes 221.

The plurality of first dissolving discs 220 are arranged alternately and repeatedly with the second dissolving discs 230. At this time, the first dissolving discs 220 are arranged such that the circulation holes 221 of the plurality of first dissolving discs 220 do not coincide with each other, It is preferable that the disc 220 is mounted at a predetermined angle.

According to such a configuration, the flow path of the mixed fluid is changed by the first dissolving disk 220 so that the mixed fluid does not flow while maintaining the linearity, and is changed to the circulation hole 221 side along the first dissolving disk 220 The residence time of the mixed fluid can be prolonged.

The second dissolution disk 230 is plate-shaped and has a plurality of circulation holes 231. The circulation hole 231 has a smaller diameter than the circulation hole 221 of the first dissolving disk 220.

According to the second dissolver 200 according to this configuration, the mixed fluid in which ozone gas is dissolved through the gas dissolving apparatus 100 is introduced into the second dissolving tank 210 of the second dissolver 200, 1,2 dissolution discs 220 and 230 alternately and repeatedly. In this process, when the mixed fluid passes through the circulation hole 221 of the first dissolution disk 220, the ozone gas (minute bubbles) dissolves in the water as the residence time increases with the formation of a vortex due to interference with the progress The mixed fluid having passed through the first dissolving disk 220 is passed by the second dissolving disk 230 in a small amount and stays between the first and second dissolving disks 220 and 230 to increase the residence time. The mixed fluid that has passed through the second dissolving disc 230 is also directed toward the circulation hole 221 of the first dissolving disc 220 and is also transferred between the second dissolving disc 230 and the first dissolving disc 220 So that mixing of the mixed fluid is induced.

10: melting tank, 11: inlet
12: outlet, 13: ring
14: O-ring, 15,16: First and second caps
20: fixed disk, 21: stationary circulation ball
30: rotating disk, 31:
32, 33: first and second cutting holes, 34:
40: rotating shaft, 50: clamp
60: Mixing nozzle, 61: Nozzle tube
65: Venturi type mixing section, 66: Vortex screw

Claims (7)

A dissolution tank 10 provided with an inlet 11 and an outlet 12 for supplying a gas containing water and ozone gas therein and providing a space in which the gas is dissolved;
It is characterized in that it comprises a fixed fixed disk 20 and a rotating disk 30 of the porous tanks are arranged alternately in the axial direction alternately inside the dissolution tank to change the gas into fine bubbles to dissolve in the water. Gas dissolving device for dissolved oxygen supply and water purification. The secondary dissolution tank 210 of claim 1, which is connected to an outlet of the dissolution tank 10 and receives a mixed fluid discharged from the dissolution tank 10, alternately and repeatedly inside the secondary dissolution tank. A secondary dissolver 200 composed of porous first and second dissolving disks 220 and 230 disposed therein,
Wherein the first dissolving disc (220) includes a guide (222) for allowing the mixed fluid passing through the circulation hole (221) to flow after passing through and forming a vortex. Device. The mixing nozzle of claim 1, further comprising a mixing nozzle 60 connected to an inlet of the dissolution tank and mixing the gas and water into the dissolution tank, wherein the mixing nozzle includes an inlet of water and an inlet of gas. A nozzle tube 61 having a 63 and a discharge port 64 of a mixed fluid, a diameter narrower than the other section inside the nozzle tube, and introduced through the water and the gas inlet through the water inlet. A gas dissolving apparatus for supplying dissolved oxygen and purifying water, comprising a venturi-type mixing unit (65) for mixing the gas to be supplied to the dissolution tank. 4. The dissolved oxygen supply of claim 1 or 3, further comprising a vortex screw (66) formed between the mixing portion and the outlet of the nozzle tube to guide the vortex of the mixed fluid mixed through the mixing portion. Gas dissolving device for water purification. The rotary disk according to claim 4, wherein the rotary disk includes: a plate-shaped rotary disk body connected to a rotary shaft (40) rotatably supported by the dissolution tank and rotated together with the rotary shaft; Characterized by at least one first cutting hole (32) through which the mixed fluid passes, at least one second cutting hole (33) through which a mixed fluid is formed so that both front and rear sides communicate with each other at the periphery of the rotary disk body, Gas dissolving device for supply and water purification. [6] The apparatus according to claim 5, further comprising a dispersing portion (34) communicating with the second cutting hole and opening toward the circumference of the rotating disk to disperse the mixed fluid to the periphery of the rotating disk Gas dissolving device for purification. The gas dissolving apparatus according to claim 5, wherein the dissolution tank has a plurality of rings (13) coupled to each other with the fixed disk interposed therebetween to fix the fixed disk.

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