KR20160018960A - An Apparatus for Mixing Gas and Liquid - Google Patents

Abstract

An apparatus for mixing a gas and a liquid according to the present invention comprises a chamber part having a gas and liquid mixture formed inside; a gas supply part supplying a gas inside the chamber part; a liquid supply part supplying a liquid inside the chamber part; and a liquid crushing part crushing the supplied liquid into fine particles. The inner part of the chamber part includes a first space filled with the supplied liquid; and a second space where the gas and liquid mixture formed in the lower part of the first space is stored. The liquid crushing part increases contact area between gas and liquid particles forming the gas and liquid mixture by supplying the crushed liquid particles to the first space.

Description

An apparatus for mixing gas and liquid,

The present invention relates to a gas-liquid mixing apparatus for mixing a gas and a liquid, and more particularly, to a gas-liquid mixing apparatus for mixing a gas and a liquid by pulverizing a liquid into fine particles in advance before forming a gas- The present invention relates to a gas-liquid mixing apparatus capable of significantly increasing the amount of gas in the form of fine bubbles contained in a gas-liquid mixture formed by forming a gas-liquid mixture in a state in which a contact area between gas particles is increased.

Generally, water having a high dissolved oxygen content (i.e., water containing a large amount of oxygen) has excellent properties of purifying action and sterilizing action. In particular, such oxygen exists in the form of fine bubbles (microbubbles or nano bubbles) in water (Hereinafter referred to as "gas") in the form of fine bubbles (micro bubbles or nano bubbles) in a large amount of water in recent years, A technique for decomposing a material or utilizing it as a disinfecting water (or washing water) is widely used.

In order to accomplish this, it is necessary to artificially include fine bubble-like gas in a liquid state of water. In the prior art, there have been used an acidification system in which gas is mixed with water through a multiplying acid orifice, , A venturi injector system that sucks gas using a pump and mixes it with water passing through a venturi pipe.

However, the conventional systems have a problem in that the devices have to be used separately, so that the installation cost of the apparatus is greatly increased and the maintenance and repair of the apparatus is expensive.

Therefore, recently, a technique has been widely used in which a gas-liquid mixture in which water is mixed with gas at a high speed is collided with a peripheral structure formed in the channel without using any separate apparatus, and the gas of the gas-liquid mixture is pulverized into fine bubbles , And details thereof are disclosed in detail in [Literature 1] and [Literature 2].

However, according to the techniques described in [1] and [2] below, since the already mixed gas-liquid mixture is pulverized into fine particles, there is an advantage that the structure of the apparatus is simplified when compared with the prior art, Since the amount of dissolved gas is similar to that of the prior art, there is a problem that the decomposition ability or the sterilizing power of the contaminants due to the gas in the form of fine bubbles contained in the water is substantially similar to that of the prior art.

[Patent Document 1] Korean Patent No. 10-0887293 (published on October 28, 2008)

[Patent Document 2] Published Korean Patent Application No. 2011-0033989 (Published on April 4, 2011)

The object of the present invention is to solve the problems of the prior art as described above, and it is an object of the present invention to provide a gas-liquid mixing device in which a liquid is previously pulverized into fine particles before forming a gas- And a gas-liquid mixture is formed in such a manner that the contact area between the gas-liquid mixture and the gas-liquid mixture is increased, thereby significantly increasing the amount of gas in the form of fine bubbles contained in the formed gas-liquid mixture.

In order to achieve the above object, a gas-liquid mixing apparatus according to the present invention includes a chamber portion in which a gas-liquid mixture is formed, a gas supply portion for supplying gas into the chamber portion, a liquid supply portion for supplying a liquid into the chamber portion, And a liquid crushing section for crushing the supplied liquid into fine particles, wherein the inside of the chamber section has a first space filled with the supplied gas, and a second space in which the formed gas-liquid mixture is stored in the lower part of the first space Wherein the liquid pulverizing section increases the contact area between the gas and the liquid particles forming the vapor-liquid mixture by supplying the pulverized liquid particles to the first space in order to increase the amount of gas contained in the vapor-liquid mixture .

The liquid crushing unit may include an upper collision plate connected to an end of the liquid supply unit, a helical collision plate connected to a lower portion of the upper collision plate, and a lower collision plate connected to a lower portion of the helical collision plate, The impingement plate is formed with a through hole that is formed to be smaller than the cross sectional area of the liquid supply portion and increases the flow rate of the supplied liquid, and the supplied liquid collides with the impingement plate at an increased speed while passing through the through hole, And is pulverized into particles.

Further, the liquid pulverizing apparatus is characterized in that the diameter of the impingement plate, the distance between the impingement plates, and the diameter of the through-hole are reduced in the direction of the lower impingement plate from the upper impingement plate.

Further, in order to prevent the liquid particles impinging on the impact plate from recombining with other liquid particles, the upper impact plate is formed in a conical shape having a lower diameter at the lower side, and the lower impact plate is formed in a conical shape .

Further, in order to prevent the liquid particles impinging on the impingement plate from recombining with other liquid particles on the outer surface of the impingement plate, the liquid pulverizing apparatus may be formed of a hydrophobic material or a coating layer of a hydrophobic material on the outer surface thereof.

A liquid level sensor connected to one side of the chamber for discharging the gas-liquid mixture stored in the second space of the chamber to the outside, and a gas-liquid discharging part connected to one side of the chamber for sensing the liquid level inside the chamber, And a controller for controlling operations of the gas-liquid discharge unit and the replenishing water supply unit using the output of the water level sensor unit, wherein the control unit controls the operation of the water level sensor unit Liquid discharge unit and the replenishment water supply unit so that the surface layer of the gas-liquid mixture adjacent to the boundary between the first space and the second space containing a relatively large amount of gas can be discharged to the gas- And a control unit for controlling the control unit.

The ultrasonic vibrator is further provided at a position adjacent to the surface layer of the gas-liquid mixture in the second space to provide vibration to the gas-liquid mixture.

As described above, the gas-liquid mixing apparatus according to the present invention is configured in such a manner that the supplied liquid is pulverized into fine particles in advance by a liquid pulverizer before mixing with the gas, and then supplied to the gas atmosphere to form the gas-liquid mixture There is an advantage that the amount of gas in the form of fine bubbles contained in the gas-liquid mixture can be remarkably increased due to the increase of the contact area between the gas and the liquid particles.

The gas-liquid mixing apparatus according to the present invention has a structure in which the formed gas-liquid mixed layer is stored in a lower portion of a gas layer maintained at a predetermined pressure by the gas supplied in the chamber portion, so that saturation solubility of the gas is increased beyond atmospheric pressure, There is an advantage that the amount of gas in the form of fine bubbles contained in the mixture can be further increased.

In addition, since the gas-liquid mixing apparatus according to the present invention controls the operation of the gas-liquid discharging portion and the replenishing water supplying portion such that the surface layer of the gas-liquid mixture having the largest bubble content is discharged to the outside through the gas- It is possible to minimize the phenomenon that the bubbles included in the chamber are regenerated inside the chamber.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a partial cross-sectional view showing the overall configuration of a vapor-liquid mixing apparatus according to an embodiment of the present invention;
2A and 2B are a front view and a sectional view for explaining the structure of the liquid pulverizing apparatus applied to the '
3 is a block diagram illustrating the operation of the gas-liquid mixing apparatus according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a partial cross-sectional view showing the overall structure of a vapor-liquid mixing apparatus according to an embodiment of the present invention, and FIGS. 2A and 2B are front views for explaining the structure of a liquid pulverizing apparatus applied to a " And FIG. 3 is a block diagram for explaining the operation of the gas-liquid mixing apparatus according to an embodiment of the present invention.

First, in the present embodiment, for convenience of explanation, the case where the 'gas-liquid mixture' is used for the purpose of decomposing, sterilizing, and cleaning pollutants will be described as an example, but the present invention is not limited thereto. It can be applied to both gas and liquid mixing by application.

Thus, throughout the description and claims of the present invention, the term "liquid" is intended to encompass all types of liquid fluids for constituting a gas-liquid mixture, such as wastewater, treated water, wash water, cleansing water, distilled water, Gas "is a concept that includes all kinds of vapor phase fluids for constituting a vapor-liquid mixture such as air, oxygen, ozone, nitrogen, carbon dioxide and the like.

The gas-liquid mixing apparatus according to the present invention includes a chamber portion 10, a gas supply portion 20 for supplying gas into the chamber portion 10, a liquid supply portion 30 for supplying a liquid into the chamber portion 10, And a liquid pulverizing unit (40) for pulverizing the supplied liquid into fine particles.

The chamber part 10 is provided with a gas-liquid mixture therein and is provided with a space for storing the formed gas-liquid mixture. The chamber part 10 is made of a material such as metal or synthetic resin, .

The gas supply unit 20 is for supplying a gas necessary for forming a gas-liquid mixture from an external gas supply source (not shown) to the inside of the chamber unit 10, and is connected to the inside of the chamber unit 10 The gas supply unit 20 is installed on the upper side of the chamber 10 as an example.

At this time, an opening / closing valve (not shown) for controlling the flow rate of the supplied gas and a pressure gauge (not shown) for measuring the gas pressure inside the chamber 10 are further provided in the middle of the gas supplying unit 20 Can be installed.

In the present embodiment, the pressure gauge (not shown) is installed in the middle of the gas supply unit 20, but the present invention is not limited thereto, and may be installed at one side of the chamber unit 10 Of course.

The liquid supply portion 30 is for supplying the liquid necessary for forming a gas-liquid mixture from an external liquid supply source (not shown) to the inside of the chamber portion 10 and is connected to the inside of the chamber portion 10 The liquid supply part 30 is provided on the ceiling surface of the chamber part 10 as an example in this embodiment.

At this time, an opening / closing valve (not shown) for adjusting the flow rate of the liquid to be supplied may further be installed in the middle of the liquid supply part 30. [

The inner space of the chamber part 10 is filled with the gas supplied from the gas supply part 20 to form a first space 11 in the upper part where the predetermined pressure is maintained, And a second space 12, which is a gas-liquid mixture layer in which the gas-liquid mixture formed by mixing gas particles and liquid particles in the first space 11 is dropped by its own weight and is formed in the lower part of the first space 11.

The liquid pulverizing unit 40 performs a function of pulverizing the fluid supplied from the liquid supply unit 30 into fine particles in advance before mixing with the gas particles, and then supplying the pulverized liquid to the first space 11 in the gas atmosphere do.

As described above, when the pulverized liquid particles are supplied to the gas atmosphere, the contact area between the gas and the liquid particles increases, so that a larger amount of gas particles form a gas-liquid mixture. As a result, It is possible to increase the amount of the gas.

Furthermore, since the gas-liquid mixing apparatus according to the present invention maintains the predetermined pressure (for example, a pressure equal to or higher than the atmospheric pressure) in the first space 11 by supplying the gas, the saturation solubility of the gas is increased, The advantage is that a larger amount of gas can be incorporated into the gas-liquid mixture.

Since the size of the minute bubbles of the gas-liquid mixture formed in the first space 11 and stored in the second space 12 is proportional to the size of the pulverized liquid particles, the liquid to be pulverized in the liquid pulverizing section 40 The smaller the particle size of the gas-liquid mixture, the smaller the size of the bubbles contained in the gas-liquid mixture.

For this, in this embodiment, the liquid crushing unit 40 includes an upper collision plate 41 connected to the end of the liquid supply unit 30, a helical collision plate 42 connected to the lower part of the upper collision plate 41, And a lower impact plate 43 connected to the lower portion of the helical impact plate 42.

A through hole 45 through which the liquid supplied from the liquid supply unit 30 passes is coaxially formed in the central portion of the upper collision plate 41 and the helical collision plate 42. The through hole 45, Sectional area (or diameter) is smaller than the cross-sectional area of the liquid supply part 30 to perform a function of greatly increasing the flow velocity of liquid passing therethrough like a normal nozzle or orifice.

2B, the liquid supplied to the end of the liquid supply portion 30 passes through the through hole 45 of the upper collision plate 41, and a very large velocity energy And a part of the liquid in which the velocity energy is increased in this manner is crushed into fine particles while sequentially colliding with the uppermost surface of the helical impingement plate 42 and the lower surface of the upper impingement plate 41.

The remaining liquid that has passed through the through hole 45 of the upper impact plate 41 passes through the through hole 45 of the helical impact plate 42 and sequentially passes through the upper and lower surfaces of the helical impact plate 42 And crushed into fine particles while colliding with the upper surface of the plate (43).

At this time, in order to prevent the liquid particles pulverized by the collision from being recombined with other liquid particles as much as possible, the liquid pulverizing section 40 is arranged in such a manner that the diameter of the impingement plate in the direction of the lower impingement plate 43 from the upper impingement plate 41 It is preferable that the upper impact plate 41 is formed in a conical shape having a lower diameter at the lower side and the lower impact plate 43 is formed in a conical shape having a smaller diameter at the upper side .

The velocity energy obtained by the liquid passing through the through hole 45 of the upper impact plate 41 gradually decreases while passing through the helical impingement plate 42. As a result, the impact force is reduced, .

Accordingly, in this embodiment, in order to compensate for the reduction in the collision force, the distance between the impingement plates in the direction of the lower impact plate 43 in the upper impact plate 41 and the diameter of the through hole 45 gradually decrease And FIG.

According to the above-described structure, since the liquid crushing unit 40 according to the present invention can maintain a substantially same level of impact force during the passage of the fluid, the effect that the size of the liquid particles to be crushed by the collision can be made very uniform .

In order to prevent the liquid particles impinging on the impingement plates 41, 42 and 43 from recombining with other liquid particles on the outer surface of the impingement plates 41, 42 and 43, Or a coating layer of the hydrophobic material is formed on the outer surface.

On the other hand, the gas-liquid mixing apparatus according to the present embodiment includes a water level sensor unit 50 for sensing the level of the internal gas-liquid mixture (that is, the interface between the first space and the second space) A gas-liquid discharge unit 60 connected to one side of the chamber unit 10 and discharging the gas-liquid mixture stored in the second space to the outside, a gas-liquid discharge unit 60 connected to one side of the chamber unit 10 at a lower portion of the gas- And a replenishing water supply unit 70 for supplying the replenishing water to the second space of the chamber unit 10. The replenishing water supply unit 70 uses the output of the water level sensor unit 50, And a control unit (100) for controlling the operation of the controller.

In this case, the level sensor unit 50 may be implemented by any known method such as an electric conduction method, a capacitance method, a floating switch method, and the like. In the present embodiment, a conventional level gauge method Level sensor using the height of the level gauge).

The gas-liquid discharging portion 60 may be formed of a conventional piping or the like communicating with the inside of the chamber portion 10. In this embodiment, And is installed on the side near the middle height.

At this time, an opening / closing valve 65 for adjusting the flow rate of the gas-liquid mixture to be supplied may be additionally provided in the middle of the gas-liquid discharge portion 60. The gas-liquid mixture discharged from the gas- It can be used as sterilized water, washing water, wastewater water, and the like.

In order to maintain the water level of the gas-liquid mixture at a preset height range, the replenishment water supply unit 70 supplies supplemental water from an external replenishing water supply source (not shown) to the inside of the chamber unit 10 The supplemental water supply part 20 may be provided in the chamber part 10 to supply the supplemental water to the chamber part 10 and to supply the supplemental water to the chamber part 10. In this embodiment, As shown in FIG.

At this time, an opening / closing valve (75) for adjusting the flow rate of the replenishing water supplied may be further provided in the middle of the replenishing water supplying part (20).

The gas-liquid mixing apparatus according to the present invention is further configured to include an ultrasonic vibrator 80 provided at a position adjacent to the surface layer 13 of the gas-liquid mixture in the second space 12 to provide vibration to the gas-liquid mixture , The ultrasonic vibrator (80) provides vibration to the surface layer (13) portion of the gas-liquid mixture having a large amount of bubbles, so that the gas and the liquid particles are mixed and kept in a mixed state.

Hereinafter, the operation of the gas-liquid mixing apparatus according to the present invention will be described with reference to FIG.

First, when an operation signal of the apparatus is input through the input unit 110, the controller 100 supplies gas and liquid to the chamber 10 according to a predetermined method to form a vapor-liquid mixture, (20) and the liquid supply part (30).

The gas-liquid mixture thus formed is stored in the second space 12 of the chamber portion 10 as described above. Due to the characteristics of gas particles (i.e., bubbles) having a specific gravity smaller than that of the liquid particles, The amount of bubbles (that is, the amount of gas contained in the liquid) is the largest.

Therefore, when the surface layer 13 of the gas-liquid mixture is used for sterilization water, washing water, or wastewater purification depending on the application, the control unit 100 controls the water level of the surface layer 13 of the gas- Liquid discharge unit 60 and the replenishment water supply unit 70 so as to be maintained in the vicinity of the gas-liquid discharge unit 60.

Since the gas-liquid mixing apparatus according to the present invention has a structure in which the gas-liquid mixture formed by keeping the water level of the surface layer 13 of the gas-liquid mixture near the gas-liquid discharging portion 60 as described above is immediately discharged to the outside, It is possible to prevent the amount of bubbles contained in the vapor-liquid mixture from being reduced as much as possible.

For example, when the gas-liquid mixing apparatus is used as washing water or washing water, air, oxygen or ozone is supplied to the gas supply unit at a preset pressure (Distilled water or tap water) is supplied to the liquid supply portion, and the gas-liquid mixture discharged from the gas-liquid discharge portion is directly used as washing water or sterilizing water.

As another example, when the gas-liquid mixing apparatus is used for wastewater treatment, air, oxygen or ozone is supplied to the gas supply unit at a predetermined pressure, and wastewater, which is water to be treated, is supplied to the liquid supply unit, And to supply the vapor-liquid mixture discharged from the discharge portion to the tank storing the for-treatment water.

In this case, the wastewater, which is the water to be treated, may be circulated through the storage tank, the liquid supply unit, and the gas-liquid discharge unit. In order to prevent damage to the vapor-liquid mixing apparatus, It is preferable that a filter device for removing suspended matters contained in the water is further included.

10: chamber part 20: gas supply part
30: liquid supply part 40: liquid crushing part
50: water level sensor unit 60: gas-liquid discharge unit
70: replenishing water supply part 80: ultrasonic vibrator
100:

Claims (7)

A chamber portion in which a gas-liquid mixture is formed;
A gas supply unit for supplying a gas into the chamber part;
A liquid supply part for supplying liquid into the chamber part; And
And a liquid crushing section for crushing the supplied liquid into fine particles,
Wherein the inside of the chamber portion comprises a first space filled with the supplied gas and a second space in which the formed gas-liquid mixture is stored in the lower portion of the first space,
Wherein the liquid pulverizing section increases the contact area between the gas and the liquid particles forming the gas-liquid mixture by supplying the pulverized liquid particles to the first space in order to increase the amount of gas contained in the gas-liquid mixture Liquid mixing device. The method according to claim 1,
Wherein the liquid crushing part comprises an upper collision plate connected to the end of the liquid supply part, a helical collision plate connected to the lower part of the upper collision plate, and a lower collision plate connected to the lower part of the helical collision plate,
Wherein the upper impingement plate and the helical impingement plate are formed with a through hole which is formed to be smaller than the cross sectional area of the liquid supply portion and increases the flow rate of the supplied liquid,
Wherein the supplied liquid is pulverized into fine particles by colliding with the impingement plate at an increased speed while passing through the through holes. 3. The method of claim 2,
Wherein the liquid pulverizing device is configured to reduce the diameter of the impingement plate, the distance between the impingement plates, and the diameter of the through-hole in the direction of the lower impingement plate from the upper impingement plate. The method of claim 3,
In order to prevent the liquid particles impinging on the impact plate from recombining with other liquid particles, the upper impact plate is formed in a conical shape having a smaller diameter at the lower side, and the lower impact plate is formed in a conical shape having a smaller diameter at the upper side Liquid mixing device. The method of claim 3,
Wherein the liquid pulverizing device comprises a hydrophobic material or a coating layer of a hydrophobic material on the outer surface thereof to prevent the liquid particles impinging on the impingement plate from recombining with other liquid particles on the outer surface of the impingement plate. 6. The method according to any one of claims 1 to 5,
A water level sensor for sensing a water level inside the chamber;
A gas-liquid discharge portion connected to one side of the chamber portion and discharging the gas-liquid mixture stored in the second space of the chamber portion to the outside;
A replenishing water supply part connected to one side of the chamber part at a lower part of the gas-liquid discharge part to supply the replenishing water to the second space of the chamber part; And
And a control unit for controlling operations of the gas-liquid discharge unit and the make-up water supply unit using the output of the water level sensor unit,
Liquid discharge unit and the replenishment water supply unit so that the surface layer of the gas-liquid mixture adjacent to the boundary between the first space and the second space containing a relatively large amount of gas can be discharged to the gas-liquid discharge unit by using the output of the water level sensor unit. Further comprising a control unit for controlling the operation of the gas-liquid mixing apparatus. The method according to claim 6,
Further comprising an ultrasonic vibrator provided at a position adjacent to the surface layer of the gas-liquid mixture in the second space to provide vibration to the gas-liquid mixture.

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