KR20060025510A - Apparatus for dissolving gas - Google Patents

Abstract

The invention relates to a gas dissolving device having high processing power and capable of efficiently dissolving gas in water. A gas dissolving device (1) comprises a vessel body (2) having a sealed space, a gas supplying mechanism (3) provided with a supply tube (3b) connected to the vessel body (2), so as to supply a gas to the vessel body (2) through the supply tube (3b) until the gas pressure in the vessel body (2) is increased to the atmospheric pressure or above, a water supply mechanism (4) provided with water supply tubes (4a, 4b) connected to the vessel body (2), so as to supply water to the vessel body (2) through the water supply tubes (4a, 4b), and a drain tube (5) for discharging the gas-dissolved water stored in the bottom of the vessel body (2) to the outside, the arrangement being such that gas is dissolved in water by bringing gas and water into gas-liquid contact in the vessel body (2). The water supply tube (4a) is vertically disposed in the vessel body (2) and is provided with a delivery port (4c) which opens to the upper end surface, the arrangement being such that water is delivered from the delivery port (4c) upwardly toward the ceiling of the vessel body (2). The water supply tube (3b) is connected to the water supply tube (4a) to supply a gas to the vessel body (2) through the water supply tube (4a).

Description

Gas dissolving unit {APPARATUS FOR DISSOLVING GAS}

The present invention relates to a gas dissolving device for dissolving gas in water.

In the waters of lakes, swamps and rivers, industrial drainage discharged from various facilities such as factories and establishments constructed in the surrounding areas, and domestic drainage discharged from ordinary households flow in, and phosphorus compounds and nitrogen compounds contained in the drainage The problem of water pollution is that water is polluted by organic matter.

Thus, as a method of improving the water quality of contaminated water, a method of recently removing or reducing excess organic matter from contaminated water (refined water) using microorganisms that decompose organic matter has been proposed. Specifically, oxygen is supplied to the microorganisms (aerobic microorganisms) in the purified water to activate the microorganisms, thereby activating the microorganisms to promote decomposition of the organic matter and to purify the purified water. In addition, the microorganisms are multiplied by the supply of oxygen to increase the decomposition ability.

In the supply of oxygen to such microorganisms, oxygen is dissolved in intake water from lakes, swamps, streams, and the like to be treated by using an oxygen dissolving apparatus described below, and the water in which the oxygen is dissolved is returned to lakes, swamps, or streams. It is performed by returning to the back (Japanese Patent Laid-Open Publication No. 6-23387 (Fig. 3, Fig. 5, etc.), Japanese Patent Laid-Open Publication No. 9-899 (Fig. 2, Fig. 3, etc.), Japanese Patent Laid-Open No. 2000-317479). See call publication (paragraph, FIG. 3, etc.).

As shown in FIG. 12, the oxygen dissolving device 100 is formed of a cylindrical member having pressure resistance and airtightness, and has a container body 102 on which a lower surface is placed and supported on the mounting member 109. An oxygen supply mechanism 103 for supplying oxygen into the gas 102, a water supply mechanism 104 for supplying water (refined water) into the container body 102, and a drain pipe for draining water in the container body 102. 105, diffusion plates 106 and 107 disposed above the container body 102, and a water level detection mechanism 108 that detects the water level in the container body 102. 12 is sectional drawing which shows schematic structure of the oxygen dissolving apparatus which concerns on a prior art example.

The oxygen supply mechanism 103 includes an oxygen supply source 103a for supplying oxygen, a supply pipe 103b having one end connected to an oxygen supply source 103a and the other end connected to an upper portion of the container body 102. And a supply valve 103c for adjusting the flow rate of oxygen supplied from the oxygen supply source 103a to the container body 102 through the supply pipe 103b, and supplying oxygen into the container body 102 to supply the container body 102. Pressurize the oxygen pressure inside the atmosphere above atmospheric pressure.

The water supply mechanism 104 includes a pump device 104a for supplying water, and a water supply pipe 104b having one end connected to the pump device 104a and the other end connected to the upper center of the container body 102. Is done.

The said drain pipe 105 is comprised from the member of the diameter substantially the same as the inner diameter of the water supply pipe 104b, is connected to the container body 102 from the upper side, and the lower end part is extended toward the bottom of the container body 102, The water stored in the bottom of the container body 102 is discharged out of the container body 102 by the oxygen pressure in the container body 102.

The diffusion plates 106 and 107 are made of flat members arranged up and down at predetermined intervals, and are provided with a plurality of through holes 106a and 107a which have small diameters penetrating the front and back. Moreover, each through hole 106a and each through hole 107a are formed in the position which shifted | deviated from the horizontal direction mutually.

The water level detection mechanism 108 is disposed in the introduction pipe 108a and the introduction pipe 108a which are longitudinally attached to the outer circumferential surface of the container body 102 along the vertical direction, and the inside of the introduction pipe 108a is disposed. The detector 108b which is attached to the float (not shown) which became elevable, and the outer peripheral surface of the container body 102 of the upper side vicinity and the lower side vicinity of the introduction pipe 108a, and detects a float (not shown), 108c).

The introduction pipe 108a is composed of a glass tube or a vinyl chloride tube, and the upper end portion and the lower end portion thereof are connected to the inside of the container body 102 so that the float (not shown) has a water level in the container body 102. It is going to go up and down accordingly.

According to this oxygen dissolving apparatus 100, oxygen is supplied into the container body 102 by the oxygen supply mechanism 103, and the oxygen pressure in the container body 102 is pressurized above atmospheric pressure.

Next, the purified water (water before oxygen dissolution) is supplied into the container body 102 from the water supply pipe 104b by the water supply mechanism 104, and the supplied water collides with the diffusion plate 106, It passes through each through hole 106a, and becomes a lot of water droplets, and it is dripped from the said diffusion plate 106. Subsequently, the dropped water collides with the diffusion plate 107 and similarly passes through the respective through holes 107a to form a plurality of finer water droplets, and is dripped from the diffusion plate 107.

As described above, the water becomes fine droplets, and the contact area with oxygen becomes large, and oxygen is efficiently dissolved in the dropping process of the water. Moreover, even if the oxygen pressure inside the container body 102 becomes high, oxygen dissolves efficiently in water.

Water that has fallen in the oxygen atmosphere is stored at the bottom of the container body 102, and the stored water (water after oxygen dissolution) is discharged from the drain pipe 105 by the oxygen pressure in the container body 102. do.

In addition, when the water level of the water stored in the container body 102 exceeds the upper limit or the lower limit, this is detected by the water level detection mechanism 108. Specifically, when the water level rises and the float (not shown) rises, this is detected by the upper detector 108b, and when the water level falls and the float (not shown) falls, this is the lower detector 108c. ) Is detected.

In this way, when the detectors 108b and 108c detect that the water level exceeds a certain limit, the opening degree of the supply valve 103c is adjusted to adjust the oxygen supply amount, thereby adjusting the oxygen in the container body 102. The pressure is adjusted to adjust the drainage, and the ratio of oxygen and water in the container body 102 is maintained within a certain range.

By the way, in the conventional oxygen dissolving device 100, since water is accumulated (drops) from each of the through holes 106a and 107a of the diffusion plates 106 and 107, it is configured to fall. Since the flow rate is extremely limited by the through holes 106a and 107a of the plates 106 and 107, the processing capacity is low (the amount of oxygen dissolved water discharged from the container 102 is small). There was a problem.

In addition, if water limited by the diffusion plates 106 and 107 is filled between the diffusion plate 106 and the diffusion plate 107 or between the ceiling plate of the diffusion plate 107 and the container body 102, Since oxygen cannot be supplied to the space below the diffusion plates 106 and 107, there is also a problem that the oxygen concentration in the space is lowered and the amount of dissolved oxygen in water is lowered. In particular, since the above-mentioned industrial wastewater and domestic wastewater contain foreign matters such as waste, the foreign matters are likely to block the through holes 106a and 107a of the diffusion plates 106 and 107. Easy to occur

In addition, if foreign matter is clogged in the through holes 106a and 107a, the container body 102 needs to be disassembled to remove the clogged foreign matter, which increases the maintenance cost of the apparatus and can remove the foreign matter. To this extent, when the container body 102 is configured to be decomposable, the structure is complicated, and manufacturing costs are increased, or the airtightness of the container body 102 is insufficient.

In addition, since the inner diameters of the water supply pipe 104b and the drain pipe 105 are about the same diameter, the water supply amount and the drainage amount are approximately the same, but when the oxygen pressure in the container body 102 rises for some reason, the amount of water discharge is higher than that of the water supply amount. There also exists a problem that this increases, and the quantity of water stored in the container body 102 tends to become small.

In addition, when the water level in the container body 102 falls and exceeds the lower limit, and this is detected by the water level detecting mechanism 108, the opening degree of the supply valve 103c is adjusted to adjust the drainage amount, but a constant time is required for the recovery of the water level. In some cases, the water level is lowered than the opening of the drain pipe 105, causing the problem that oxygen in the container body 102 leaks out of the drain pipe 105 to the outside.

This invention is made | formed in view of the above situation, Comprising: When dissolving gas in water, it aims at providing the gas dissolving apparatus which is high in the processing capability compared with the former, and can perform dissolution more efficiently.

The present invention for achieving the above object,

A gas supply means including a container body having a sealed space, a supply pipe connected to the container body, supplying gas into the container body through the supply pipe, and pressurizing a gas pressure inside the container body to an atmospheric pressure or higher; A water supply means having a water supply pipe connected to the container body, the water supply means for supplying water into the container body through the water supply pipe, and a drain pipe connected to the container body to drain gas dissolved water stored in the bottom of the container body. In the gas dissolving device comprising a gas-liquid contacting the water and the gas in the container body,

The water supply pipe is configured such that one end thereof is disposed in the container body in the vertical direction and has a discharge port opened at an upper end surface thereof, and discharges the water from the discharge port toward the ceiling direction of the container body. It relates to a gas dissolving device.

According to this invention, first, predetermined gas (gas which dissolves in water) is supplied to a container body through a supply pipe via a gas supply means, and the gas pressure inside this container body is pressurized beyond atmospheric pressure.

Thereafter, water (water before gas dissolution) is supplied into the water supply pipe by the water supply means, and the supplied water is discharged from the discharge port into the container body after flowing through the water supply pipe.

The discharged water is spouted in a fountain shape (radial shape with the discharge port as the center) toward the ceiling, and collides with the inner surface of the container body such as the ceiling surface or the inner circumferential surface, and flows or pops up along the inner surface. Although it falls in the inner space of or flows along the outer peripheral surface of a water supply pipe, it is stored in the bottom of a container body, but in the flow process in this gas atmosphere, the gas which contacted the said water melt | dissolves.

Moreover, since the contact area with a gas becomes large in the water spouted radially, many gas dissolves efficiently by this water, and even if the gas pressure inside a container body becomes high, The gas dissolves efficiently.

The water (water after gas dissolution) stored in the container body is drained from the drain pipe to the outside of the container body by the gas pressure inside the container body.

In this way, according to the gas dissolving device which concerns on this invention, since a contact area with the gas of this water can be enlarged by spraying water radially from a discharge port, many gas can be dissolved efficiently by the said water, That is, the gas can produce water in which the gas is dissolved at a high concentration.

Moreover, since the contact area with gas can be enlarged even if a diffusion plate is not provided in a container like the said conventional oxygen dissolving apparatus, the fall flow rate of water is not restrict | limited by the said diffusion plate, and a large amount of water Can be treated efficiently, and the supply of gas is not impeded by the water limited by the diffusion plate.

In addition, since foreign matters such as garbage do not get clogged in the diffuser plate, there is no need to remove foreign matters, the maintenance cost can be lowered, and a diffuser plate is provided or the container body is disassembled to remove the foreign matter. Since it is not necessary to make it possible, the structure of a container body can be simplified, manufacturing cost can be made low, and the airtightness of a container body can be made high.

The gas dissolving device further includes a first defrosting member protruding inward from the inner surface of the container body, is discharged from the discharge port toward the ceiling, and is along the inner surface of the container body. It is preferable that it is comprised so that the flowing water may flow into the internal space of the said container body from the protruding end of this 1st defrosting member.

In this way, the flow of water flowing along the inner surface of the container body is controlled by the first defrosting member so that a thin film or a waterfall can flow into the inner space of the container body from the protruding end of the first defrosting member. Since it can contact with gas on both surfaces of a water film, more gas can be dissolved efficiently in this water.

The gas dissolving device further includes a plate-shaped second defrosting member that protrudes outwardly from the outer peripheral surface of one end of the water supply pipe, is discharged from the discharge port toward the ceiling, and flows along the outer peripheral surface of the water supply pipe. It is preferable to be comprised so that water may flow into the internal space of the said container body from the protruding end of this 2nd defrosting member.

In this way, the flow of water flowing along the outer circumferential surface of the water supply pipe is controlled by the second defrosting member in the same manner as described above, and a thin film shape also falls into the inner space of the container body from the protruding end of the second defrosting member. Since it can fall in shape, it can contact with gas on both sides of a water film, and can dissolve more gas in this water efficiently.

Moreover, it is preferable that the said 1st defrosting member is comprised from the plate-shaped member which protruded inwardly from the inner peripheral surface of the said container body, and is equipped with many through-holes which penetrated the front and back, and the said 2nd defrosting It is preferable that the member is provided with the many through-holes which penetrated the front and back.

 In this way, water drifted (flow-controlled) by the first or second defrosting member can flow down not only from the protruding end of the first or second defrosting member, but also from each through hole. As a result, a larger amount of water can be efficiently treated. In addition, the water flowing out of each through hole falls in a number of droplets depending on the size of the through hole, or falls in a thin film shape and falls, so that the contact area with the gas becomes large. Many gases dissolve efficiently by.

Moreover, it is preferable that the said 1st defrosting member and / or the 2nd defrosting member are formed in wave shape, when the protruded end edge is planar view. In this case, since the circumferential length of the said stage edge can be made long, the surface area of the water which flows in a thin film | membrane and waterfall shape from the protruding end of the said 1st and / or 2nd defrosting members is made large, The contact area can be increased, and more gas can be efficiently dissolved in the water.

Moreover, it is preferable that the said container body is formed in the spherical curved surface which the said ceiling part protrudes outward or inward. In this way, the water discharged from the discharge port and collided with the ceiling surface of the container body can flow along the ceiling surface to the first defrosting member side, and defrosted by the first defrosting member to flow into the inner space of the container body. Therefore, the amount of gas dissolved in water can be increased.

Moreover, it is preferable that the said drain pipe is comprised by the small diameter whose internal diameter is the same diameter or less than the internal diameter of the said water supply pipe. In this case, since it is difficult to drain the water stored in the container body, the gas pressure in the container body can be made higher, and many gases can be dissolved efficiently by the water flowing in the gas atmosphere. have.

Moreover, even if the gas pressure in the container body rises for any reason, the water level in the container body is lowered and becomes difficult, and the water level is lowered than the opening of the drain pipe so that the gas in the container body can be effectively prevented from leaking from the drain pipe to the outside. Can be.

Moreover, it is preferable that the said gas supply means is comprised so that the said supply pipe may be connected to the said water supply pipe, and discharge the said gas together with the said water from the discharge port of this water supply pipe.

In this way, water and gas can be mixed and brought into contact with each other, and the gas can be flowed toward the discharge port side while dissolving the gas in water, so that the gas can be dissolved in water more efficiently and in a large amount.

Moreover, it is preferable that the cross-sectional area of the said water supply pipe is reduced by the said discharge port. In this case, the flow rate can be increased by increasing the pressure at the time of discharge, so that the water discharged from the discharge port can be spun up in a wider radial shape, so that the gas can be dissolved in the water more efficiently and in a large amount in the water supply pipe. The gas mixed with water can be dissolved in the water more efficiently and in large quantities.

1: is sectional drawing which shows schematic structure of the oxygen dissolving apparatus concerning 1st Embodiment of this invention, FIG. 2 is sectional drawing of the arrow AA direction in FIG. 1, FIG. 3 is the arrow BB in FIG. 4 is a cross-sectional view of the arrow CC direction in FIG. 1, and FIG. 5 is an explanatory diagram for explaining the flow of water in the first embodiment. 6 is sectional drawing which shows schematic structure of the oxygen dissolving apparatus concerning 2nd Embodiment of this invention, FIG. 7 is sectional drawing of the arrow DD direction in FIG. 1, FIG. 8 is in 2nd Embodiment It is explanatory drawing for demonstrating the flow of water. 9 is a top view which shows schematic structure, such as a 2nd current board which concerns on other embodiment of this invention, and FIG. 10 shows schematic structure, such as a 2nd current board which concerns on another embodiment of this invention. It is sectional drawing, and FIG. 11 is sectional drawing which shows schematic structure, such as an ionizing member which concerns on other embodiment of this invention. 12 is sectional drawing which shows schematic structure of the oxygen dissolving apparatus which concerns on a prior art example.

EMBODIMENT OF THE INVENTION Hereinafter, in order to demonstrate this invention in detail, this is demonstrated based on an accompanying drawing.

(1st embodiment)

First, the first embodiment of the present invention will be described based on FIGS. 1 to 5. 1 is sectional drawing which shows schematic structure of the oxygen dissolving apparatus concerning 1st Embodiment of this invention, FIG. 2 is sectional drawing of the arrow AA direction in FIG. 1, FIG. It is sectional drawing of the arrow BB direction, FIG. 4 is sectional drawing of the arrow CC direction in FIG. 1, and FIG. 5 is explanatory drawing for demonstrating the flow of water in 1st Embodiment.

As shown in FIGS. 1-4, the oxygen dissolving apparatus 1 which concerns on this embodiment is the container body 2 which has a sealed space, and the oxygen supply mechanism 3 which supplies oxygen in the container body 2; ), A pressure detector (not shown) for detecting oxygen pressure inside the container body 2, a water supply mechanism 4 for supplying water into the container body 2, and water in the container body 2. Water level for detecting the water level in the container body 2, the drain pipe 5 for draining the water, the first, second and third dripping plates 6, 7, 8 disposed at an upper position in the container body 2, The detection mechanism 9 is provided.

The container body 2 is formed in a cylindrical shape with a material having corrosion resistance such as stainless steel and hard synthetic resin (for example, FRP), and a lower surface thereof is supported on the mounting member 90. It is comprised so that even if internal pressure is pressurized beyond atmospheric pressure, it will not be damaged.

Moreover, the ceiling part of the container body 2 is formed with the spherical curved surface which protruded outward, The exhaust pipe 10 which connects the inside and exterior of the container body 2 and connects is connected to this ceiling part, The exhaust pipe 10 is provided with an exhaust valve 10a that is normally controlled in a closed state.

Moreover, you may apply resin coating to the inner surface of the container 2, and, if it does in this way, corrosion resistance can be improved.

The oxygen supply mechanism 3 has an oxygen supply source 3a for supplying oxygen, and a supply pipe 3b connected at one end to an oxygen supply source 3a, and connected at a second end to a first water supply pipe 4a described later. And a supply valve 3c for regulating the flow rate of oxygen supplied from the oxygen supply source 3a into the container body 2 through the supply pipe 3b, and through the supply pipe 3b and the first water supply pipe 4a. Oxygen is supplied to the gas 2 to pressurize the oxygen pressure inside the container body 2 to atmospheric pressure or higher.

The oxygen supply source 3a is configured of, for example, a high-pressure oxygen container filled with oxygen, an oxygen generating device for extracting oxygen from air, and pressurizing and supplying the extracted oxygen.

The supply valve 3c is adjusted such that its opening degree is substantially constant such as the pressure value detected by the pressure detector (not shown) and the water level detected by the water level detection mechanism 9.

It is preferable that the said supply pipe 3b is comprised from stainless steel, a hard synthetic resin, etc., and the outer peripheral surface is resin-coated in order to improve corrosion resistance.

The water supply mechanism 4 is provided with an axis along the up and down direction, and is disposed at a coaxial position with the container body 2, and has an upper end surface at a predetermined distance from the ceiling surface of the container body 2. 1st water supply pipe 4a arrange | positioned at the upper side of 2), and an end side penetrates into the container body 2 from the outer peripheral surface of the container body 2, and is between the upper end part and the lower end part of the said 1st water supply pipe 4a. Water which is connected to the other end side of the connected 2nd water supply pipe 4b and the 2nd water supply pipe 4b, and withdraw | collected from the lake, a swamp, a river, etc. in the container body 2 through each water supply pipe 4b, 4a ( And a pump device 4e for supplying purified water).

The said 1st water supply pipe 4a is provided in the upper end surface, and has the discharge port 4c which discharges water toward the said ceiling direction, The inner diameter of this discharge port 4c is the thing of the 1st water supply pipe 4a. It is formed with smaller diameter than other part (inner diameter D1). Moreover, the other end side of the said supply pipe 3b is connected to the lower end part of the 1st water supply pipe 4a, and the lower end surface of the said 1st water supply pipe 4a is appropriately sealed by the sealing member 4d.

The said 2nd water supply pipe 4b is provided with the non-return valve | valve which is not shown in figure, The water supplied in the container body 2 flows back by this backflow prevention valve (not shown), or from the supply pipe 3b. The leakage of the supplied oxygen to the outside is prevented.                 

One end of the drain pipe 5 is introduced into the inside from the bottom outer peripheral surface of the container body 2, and the water (oxygen dissolved water) stored in the bottom inside the container body 2 is the container body. (2) By internal oxygen pressure, it drains to the outside (lake, swamp, river, etc.) of the container body 2.

In addition, the drain pipe 5 has an inner diameter D2 having a smaller diameter equal to or smaller than the inner diameter D1 of each of the water supply pipes 4a and 4b, and is opened on the one end surface to drain the water. The drain port 5a for this purpose is provided.

In addition, each of the water supply pipes 4a and 4b and the drain pipe 5 is made of a material having corrosion resistance such as stainless steel or hard synthetic resin, and the inner surface thereof is preferably coated with a resin. , Corrosion resistance can be improved.

The said 1st, 2nd and 3rd dripping plates 6 and 7, 8 are comprised by the plate-shaped annular member arrange | positioned at predetermined intervals in the up-down direction, and the 1st dripping plate 6 has The outer circumferential surface is fitted and fixed to the upper inner circumferential surface of the container body 2, and the inner circumferential surface is fitted to the upper end of the first water supply pipe 4a from the outside, and the inner peripheral surface of the second dripping plate 7 is the first water supply pipe. It is inserted and fixed to the upper end part of 4a from the outside, and is arrange | positioned below the 1st dripping plate 6, The outer peripheral surface of the 3rd dripping plate 8 is fitted and fixed to the upper inner peripheral surface of the container body 2, and is fixed. It is arranged below the second defrosting plate 7.

Moreover, it is preferable that each deicing plate 6,7,8 is comprised from stainless steel, a hard synthetic resin, etc., and the resin coating is given to the surface in order to improve corrosion resistance.                 

The first defrosting plate 6 has four fan-shaped through holes 6a opened in its front and back and flows along the inner circumferential surface of the container body 2 and the outer circumferential surface of the first water supply pipe 4a. The water colliding with water and colliding with the ceiling surface of the container body 2 is restrained (by controlling the flow of water), and the inside of the container body 2 from each of the through holes 6a of the first dripping plate 6. The thin membrane shape falls into the space.

As for the said 2nd drifting plate 7, the outer peripheral surface (end edge) is formed in the zigzag shape, and is penetrated by the 1st dripping plate 6, and flows through the water and the 1st dripping board 6, respectively. The water passing through the hole 6a is restrained, and a thin film-like waterfall falls into the inner space of the container body 2 from the outer circumferential portion (protrusion end) of the second dripping plate 7.

As for the said 3rd dripping plate 8, the inner peripheral surface (end edge) is formed in the zigzag shape, and the water which drifted by the 1st dripping plate 6 and the 2nd dripping plate 7, and flowed down, or the 1st Water that has passed through each through hole 6a of the dripping plate 6 is discharged to form a thin film or falls into the inner space of the container body 2 from the inner circumferential portion (protrusion end) of the third dripping plate 8. Flow into shape.

The water level detection mechanism 9 is made of a light-transmitting material such as glass or resin, and has an introduction tube 9a attached to the outer circumferential surface of the container body 2 along a vertical direction in the longitudinal direction, and near the introduction tube 9a. It consists of two water level sensors 9b and 9c which are arranged up and down in the outer peripheral surface of the container body 2 of this.

The upper end portion and the lower end portion of the introduction pipe 9a are connected to the inside of the container body 2 so that the liquid level in the introduction pipe 9a is raised and lowered according to the water level in the container body 2, The water level sensors 9b and 9c detect the liquid level position. Moreover, the upper end part of the inlet pipe 9a is connected to the container body 2 in the intermediate position of the 1st dripping board 6 and the 2nd dripping board 7, The lower end part is the drain port of the drain pipe 5 ( It is connected to the container body 2 in the upper position than 5a).

In this way, according to this water level detection mechanism 9, when the water level in the container body 2 rises and the liquid level position in the inlet pipe 9a rises, and this will be detected by the upper water level sensor 9b, a container body It is judged that the water level in (2) has exceeded the upper limit, the opening degree of the supply valve 3c is adjusted, and the oxygen supply amount increases. As a result, the oxygen pressure in the container body 2 increases, so that the amount of drainage increases, and the water level in the container body 2 decreases.

On the other hand, when the water level in the container body 2 falls and the liquid level position in the inlet pipe 9a falls, and this is detected by the lower water level sensor 9c, it is judged that the water level in the container body 2 exceeded the lower limit. Thus, the opening degree of the supply valve 3c is adjusted, and the oxygen supply amount is reduced. As a result, the oxygen pressure in the container body 2 is lowered so that the amount of drainage is reduced, and the water level in the container body 2 is increased.

According to the oxygen dissolving device 1 of this embodiment comprised as mentioned above, oxygen is supplied into the container body 2 from the oxygen supply source 3a through the supply pipe 3b and the 1st water supply pipe 4a first, The oxygen pressure in the gas 2 is pressurized above atmospheric pressure.

Next, when the purified water (water before oxygen dissolution) is supplied to the second water supply pipe 4b by the pump device 4e, the supplied water is passed through the second water supply pipe 4b, and then the first water supply pipe. In 4a, the inside of the first water supply pipe 4a is circulated while being mixed with oxygen supplied from the supply pipe 3b and in contact with each other, and discharged together with oxygen from the discharge port 4c.

The discharged water is pumped up in a fountain shape (radial around the discharge port 4c) toward the ceiling direction (see arrow C1 in FIG. 5), but the internal water of the discharge port 4c has no internal diameter. Since it is formed with a smaller diameter than the other part of one water supply pipe 4a, the pressure at the time of discharge becomes high, the flow velocity becomes high, and it spouts up spontaneously and broadly radially.

The water spouted from the discharge port 4c collides with the ceiling surface or the inner circumferential surface of the container body 2 and flows downward along the ceiling surface or the inner circumferential surface (see arrow C2), or jumps up (not shown). And flows downwardly along the outer circumferential surface of the first water supply pipe 4a (not shown), and is then deconstructed by the first defrosting plate 6 to pass through the through hole of the first dehydrating plate 6. From 6a) into the inner space of the container body 2, a thin film also falls into a waterfall (see arrows C3 and C4).

Subsequently, water that has been squeezed out by the first defrosting plate 6 and flows down, or water that springs up and passes through the respective through holes 6a of the first defrosting plate 6, is transferred to the second defrosting plate 7. And a thin film-like waterfall falls into the inner space of the container body 2 from the outer peripheral part of the said 2nd dripping plate 7 (refer arrow C5).

Subsequently, the water that has been squeezed out by the first or second defrosting plate 6 or 7 and flows down or passes through each through hole 6a of the first defrosting plate 6, The thin film is also dropped into the inner space of the container body 2 from the inner circumferential portion of the third fan plate 8 and falls into the shape of a waterfall (see arrow C6). It is stored at the bottom of 2).

And in this flow process in the 1st water supply pipe 4a of water and in the container body 2, oxygen contacted with the said water dissolves. At this time, since the oxygen pressure inside the container 2 becomes high, oxygen is efficiently dissolved in the water.

Thereafter, the water (oxygen dissolved water) stored in the container body 2 is drained from the drain pipe 5 by the oxygen pressure inside the container body 2.

When the water level of the water stored in the container body 2 exceeds the upper limit or the lower limit, it is detected by the water level detection mechanism 9, and when the water level exceeds the upper limit, the liquid level position in the inlet pipe 9a is on the upper side. When the water level exceeds the lower limit, this is detected by the water level sensor 9c on the lower side.

In this way, when the water level sensor 9b, 9c detects that the water level exceeded a certain limit, the opening degree of the supply valve 3c is adjusted, and the oxygen supply amount is adjusted, whereby the inside of the container body 2 is adjusted. The oxygen pressure is adjusted to adjust the drainage amount, and the ratio of oxygen and water in the container body 2 is maintained within a constant range.

In addition, each of the water supply pipes 4a and 4b and the drainage pipe 5 has an inner diameter D2 of the drainage pipe 5 having a diameter smaller than or equal to the inner diameter D1 of each of the water supply pipes 4a and 4b. As a result, water in the container body 2 is difficult to drain (water is easily stored in the container body 2), and the oxygen pressure inside the container body 2 is increased to a higher pressure. have.

When oxygen is dissolved in water, the gas, such as nitrogen, originally contained (dissolved) is released from the water according to Henry's law, so that the oxygen concentration in the container body 2 gradually decreases. , The amount of dissolved oxygen in water decreases. For this reason, in order to maintain the oxygen concentration in the container body 2 more than a fixed value, gas, such as nitrogen, in the container body 2 is discharged regularly.

Specifically, first, the supply valve 3c is closed, the oxygen supply to the container body 2 is stopped, and then the exhaust valve 10a of the exhaust pipe 10 is opened to open the inside and the outside of the container body 2. Connect and let go. Thereby, the gas pressure inside the container body 2 falls to the pressure equivalent to atmospheric pressure, and the water stored in the container body 2 is not drained from the drain pipe 5.

Next, water is further supplied from each of the water supply pipes 4a and 4b into the container body 2, and the water level in the container body 2 is raised, so that the gas in the container body 2 is discharged from the exhaust pipe 10. (2) Discharge to the outside.

Thus, according to the oxygen dissolving apparatus 1 of this embodiment, since water can be sprayed radially from the discharge port 4c and the contact area with the oxygen of this water can be enlarged, a lot of oxygen is made effective by this water. It is possible to produce water which can be dissolved, that is, dissolved in a high concentration of oxygen.

Moreover, since the contact area with oxygen can be enlarged like the conventional oxygen dissolving apparatus 100 without providing the diffuser plates 106 and 107 in the container body 102, the said diffuser plate 106, 107) does not restrict the flow rate of water, and it is possible to efficiently process a large amount of water, and at the time of discharging gas such as nitrogen, the water level in the container body 2 is rapidly raised to quickly discharge the gas. can do. In addition, the supply of oxygen is not inhibited by the water limited by the diffusion plates 106 and 107.

In addition, since foreign matters such as garbage do not get clogged by the diffusion plates 106 and 107, there is no need to remove foreign matters, the maintenance cost can be reduced, and the diffusion plates 106 and 107 are provided. In addition, since the container body 2 does not need to be decomposable in order to remove foreign substances, the structure of the container body 2 can be simplified, manufacturing cost can be made low, and the airtightness of the container body 2 can be made high. have.

In addition, water is squeezed by each of the drift plates 6, 7 and 8 so that a thin film and a waterfall fall from the respective drift plates 6, 7 and 8 into the inner space of the container body 2. Since it can contact with oxygen from both surfaces of a water film, more oxygen can be dissolved efficiently in this water.

In addition, by providing a plurality of defrosting plates 6, 7, 8 to increase the number of defrosting times of water, the flow state of water is changed to increase the number of times of contact between the water and oxygen. Oxygen can be dissolved.

In addition, since the outer circumferential surface of the second deliming plate 7 and the inner circumferential surface of the third deliming plate 8 are formed in a zigzag shape, the circumferential lengths of the outer circumferential surface and the inner circumferential surface are lengthened, and the second deliming plate 7 and The surface area of the water falling into the thin film form and the waterfall form from the third dripping plate 8 can be increased to increase the contact area with oxygen, and more oxygen can be efficiently dissolved in the water.

Moreover, since the upper part of the container body 2 is formed in the spherical curved surface which protruded outward, the water which discharged from the discharge port 4c and collided with the ceiling surface of the container body 2 is made of the said cloth. According to the scene, it flows to the 1st dripping board 6 side, it can be made to defrost by the said 1st dripping board 6, and can flow down in the internal space of the container body 2, and the oxygen dissolution amount of water can be raised.

Moreover, since the upper end surface of the 1st water supply pipe 4a is arrange | positioned at the upper side in the container body 2, and the water is discharged from the discharge port 4c in the upper side in the container body 2, the discharge port 4c After discharging from), the flow distance of water until it is stored in the bottom part of the container body 2 can be lengthened, and the oxygen dissolution amount of the water can be further increased.

Moreover, since the internal diameter D2 of the drain pipe 5 is comprised by the small diameter of the diameter equal to or less than the internal diameter D1 of each water supply pipe 4a, 4b, the water stored in the container body 2 It becomes difficult to drain, and the oxygen pressure in the container body 2 can be made higher, and much oxygen can be dissolved efficiently by the water which flows in the said oxygen atmosphere.

Moreover, even if the oxygen pressure in the container body 2 rises for some reason, since the water level in the container body 2 is unlikely to fall, the water level is lowered than the drain port 5a of the drain pipe 5 so that the container body ( The problem that oxygen in 2) is exposed to the outside from the drain pipe 5 can be prevented effectively.

Moreover, since water and oxygen are mixed and brought into contact with each other, and oxygen is dissolved in water, the inside of the first water supply pipe 4a is flowed toward the discharge port 4c side, so that oxygen is dissolved in water more efficiently and in large quantities. You can.

In addition, since the inner diameter of the discharge port 4c is configured to be smaller in diameter than the other parts of the first water supply pipe 4a, the pressure at the time of discharge can be increased to speed up the flow rate, and the discharge port 4c is discharged from the discharge port 4c. The water can be expanded to a wider radial shape to dissolve oxygen in water more efficiently and in large quantities, or to dissolve oxygen mixed with water in the water in the first water supply pipe 4a more efficiently and in large quantities. Can be.

Moreover, since the 1st water supply pipe 4a is arrange | positioned coaxially with the container body 2, the water discharged | emitted from the discharge port 4c can be disperse | distributed uniformly, and the inside of the container body 2 can flow down, and the said The process can be performed efficiently.

(2nd embodiment)

Next, 2nd Embodiment of this invention is described based on FIG. 6 is sectional drawing which shows schematic structure of the oxygen dissolving apparatus concerning 2nd Embodiment of this invention, FIG. 7 is sectional drawing of the arrow DD direction in FIG. 1, FIG. 8 is 2nd Embodiment An explanatory diagram for explaining the flow of water in

As shown in FIG. 6, the oxygen dissolving device 20 according to the present embodiment includes an oxygen supply mechanism 3, a water supply mechanism 4, and a drain pipe in the oxygen dissolving device 1 according to the first embodiment. (5) and each deicing plate 6, 7, 8 are different, the same code | symbol is attached | subjected about the same component part as the oxygen dissolving apparatus 1, and the detailed description is abbreviate | omitted.

As shown in FIG. 6 and FIG. 7, the oxygen dissolving device 20 according to the present embodiment includes the container body 2, an oxygen supply mechanism 21 for supplying oxygen into the container body 2, and The pressure detector (not shown), the water supply mechanism 22 for supplying water into the container body 2, the drain pipe 23 for draining the water in the container body 2, and the inside of the container body 2. The first and second drift plates (24, 25) disposed in the upper position and the water level detection mechanism (9).

The oxygen supply mechanism 21 includes a supply pipe 21a connected to the oxygen supply source 3a, one end of which is connected to an oxygen supply source 3a, and the other end of which is connected to an upper portion of the container body 2, and the supply of the oxygen supply mechanism 21. It consists of a valve 3c and an exhaust valve 21b which connects the inside and the exterior of the container body 2 to the outside, and the supply valve 3c is opened in a predetermined opening degree, and the exhaust valve 21b is closed. It is normally controlled.

One end of the water supply mechanism 22 penetrates from the outer peripheral surface of the bottom of the container body 2 to the inside thereof, is bent into an L shape at the center portion of the container body 2, and an upper side of the container body 2 is provided. The water supply pipe 22a extended toward the surface, the said pump apparatus 4e etc. connected to the other end side of the water supply pipe 22a are provided.

The water supply pipe 22a is provided with a discharge port 22b whose one end (upper end) is disposed at a predetermined distance from the ceiling surface in the container body 2 and opened on the upper end surface thereof, and the discharge port 22b is provided. Is opened toward the ceiling direction in the container body 2 and discharges water toward the ceiling direction.

Moreover, the backflow prevention valve which is not shown in figure is provided in the water supply pipe 22a, and this backflow prevention valve (not shown) prevents the water supplied in the container 2 from backflowing.

One end of the drain pipe 23 penetrates from the outer peripheral surface of the bottom of the container body 2 to the inside thereof, is bent into an L shape in the container body 2, and is directed toward the bottom surface side of the container body 2. It extends and the water (oxygen dissolved water) stored in the bottom part in the container body 2 is drained out of the container body 2 by the oxygen pressure in the said container body 2.

Moreover, the drain pipe 23 has the said one end (lower end) arrange | positioned at the predetermined | prescribed interval with the bottom face of the container body 2, and is provided in the said lower end surface, and is provided with the drain port 23a for draining water. have. Moreover, the drain pipe 23 is comprised with the small diameter whose inner diameter D2 is the same diameter or less than the inner diameter D1 of the water supply pipe 22a.

The first defrosting plate 24 is composed of a flat plate and an annular member, and its outer circumferential surface is fitted into and fixed to the upper inner circumferential surface of the container body 2, and is positioned at approximately the same height as the upper end of the water supply pipe 22a. It arrange | positioned, and the water which flows along the inner peripheral surface of the container body 2, and the water which collided with the ceiling surface of the container body 2, is restrained, and the container body from the inner peripheral part of the said 1st dripping plate 24 is carried out. Into the inner space of (2), the thin film shape is also flowed down into the waterfall shape.

Similarly, the said 2nd delimiting plate 25 is comprised from a flat plate and an annular member, The inner peripheral surface is fitted and fixed to the outer peripheral surface of the upper end side of the water supply pipe 22a, and is fixed below and below the 1st defrosting plate 24. It arrange | positioned, and the water which flows along the outer peripheral surface of the water supply pipe 22a, and the water which collided with the ceiling surface of the container body 2, are restrained, and the container body 2 is removed from the outer peripheral part of the said 2nd dripping plate 25. The thin film shape falls into the inside space of).

According to the oxygen dissolving device 20 of this embodiment comprised as mentioned above, oxygen is supplied in the container body 2 by the oxygen supply mechanism 21, and the pressure in the container body 2 is pressurized above atmospheric pressure. do.                 

Next, when the purified water (water before oxygen dissolution) is supplied to the water supply pipe 22a by the pump device 4e, the supplied water flows through the water supply pipe 22a, and then is discharged from the discharge port 22b. It is discharged into the base 2.

The discharged water is spouted up in a fountain shape (radial shape around the discharge port 22b) toward the ceiling direction (see arrow C11 in FIG. 8), and collides with the ceiling surface or the inner circumferential surface of the container body 2, Flows downward along the ceiling or inner circumferential surface thereof (see arrow C12), springs up (not shown), or flows downward along the outer circumferential surface of the water supply pipe 22a (see arrow C13).

The water flowing along the inner circumferential surface of the container body 2 is then drifted by the first defrosting plate 24 and into the internal space of the container body 2 from the inner circumferential portion of the first defrosting plate 24. The thin film also falls in the shape of a waterfall (see arrow C14), and the water flowing along the outer circumferential surface of the water supply pipe 22a is drifted by the second distillation plate 25, and the outer circumferential portion of the second distillation plate 25 is formed. From the inside into the inner space of the container body 2 also falls into a thin film shape (see arrow C15).

In addition, most of the above-mentioned water which has jumped out is not de-energized by each deicing plate 24, 25, but flows in the inner space of the container body 2. As shown in FIG.

And water which flowed down in the oxygen atmosphere is stored in the bottom part of the container body 2, and the stored water (water after oxygen dissolution) is discharged | emitted from the drain pipe 23 by the oxygen pressure in the container body 2 inside. Drained.

In this manner, the oxygen dissolving device 20 of the present embodiment can also spray water radially from the discharge port 22b and flow along the inner circumferential surface of the container body 2 and the outer circumferential surface of the water supply pipe 22a. Since water can flow down from each of the defrosting plates 24 and 25 in a thin film form or a waterfall form, the same effect as that of the oxygen dissolving device 1 can be obtained, for example, to produce water in which oxygen is dissolved at a high concentration. Can be.

As mentioned above, although one Embodiment of this invention was described, the specific aspect which can be employ | adopted of this invention is not limited to this at all.

For example, in the said 2nd Embodiment, the said 2nd dripping plate 25 may be comprised by the 2nd dripping plate 26 shown to FIG. 9 and FIG.

As shown in FIG. 9 and FIG. 10, the second deliming plate 26 has a flat plate and a rectangular shape, and its outer circumferential surface is formed in a zigzag shape, and penetrates the front and back to form a plurality of through holes 26a. ) And a fitting hole 26b formed in the center portion, and the water flows down from the outer circumferential portion into a thin film shape and a waterfall shape, and the water is dropped into the plurality of water droplets from the through hole 26a.

The through hole 26a is formed on a concentric circle centering on the insertion hole 26b. The through hole 26a formed on the inner side and the through hole 26a formed on the outer side are positioned in the circumferential direction. They are formed to shift, respectively.

Moreover, the inner peripheral surface of the insertion hole 26b is fitted and fixed to the outer peripheral surface of the upper end side of the water supply pipe 22a, and the two edge parts 26 are supported by the inner peripheral surface of the container body 2, It is arrange | positioned in the upper position at the predetermined space | interval from the 1st dripping plate 24, and the clearance gap 26c is formed between the outer peripheral surface and the inner peripheral surface of the container body 2. As shown in FIG.                 

In the oxygen dissolving apparatus provided with the 2nd airflow plate 26 and the 1st airflow plate 24 comprised in this way, water flows in the container body 2 as follows.

That is, the radially spouted water (see arrow C21) then collides with the ceiling or inner circumferential surface of the container body 2 and flows downward along the ceiling or inner circumferential surface (see arrow C22), It springs up (not shown) or flows downward along the outer circumferential surface of the water supply pipe 22a (see arrow C23).

The water that flows along the outer circumferential surface of the water supply pipe 22a and the water that protrudes are then drifted by the second distillation plate 26 to form a thin film shape from the outer circumferential portion of the second distillation plate 26. It falls in a waterfall shape, or it drops in many droplets from the through-hole 26a of the said 2nd dripping plate 26 (refer arrow C24).

On the other hand, the water flowing along the inner circumferential surface of the container body 2, the water that has jumped up and passed through the gap 26c, and the water that has been drifted down by the second distillation plate 26, are first distillation plates 24. ), And the thin film form falls from the inner circumferential portion of the first dripping plate 24 to a waterfall form (see arrow C25).

In this way, even when the respective defrosting plates 24 and 26 are formed and arranged, the water discharged from the discharge ports 22b can be made to fall into a thin film form or a waterfall from the inner and outer peripheral portions of the decondensing plates 24 and 26. At the same time, since the droplets can be dropped into the plurality of water droplets from the through hole 26a, the same effects as described above can be obtained, for example, to produce water in which oxygen is dissolved at a high concentration.

In this case, the area of the gap 26c is preferably larger than twice the area of the through hole 26a. In addition, the area of the gap 26c is more preferably set to about 5% or more of the transverse area of the container body 2, and more preferably set to about 10% or more. In this case, foreign matter such as garbage can be passed through the gap 26c to effectively prevent clogging, and a predetermined amount of water can be passed through the gap 26c. It becomes possible to process.

In addition, the water flow C1-C6, C11-C15, C21-C25 demonstrated based on FIG. 5, FIG. 8, and FIG. 10 is an example, and such flow changes naturally according to the discharge amount, discharge pressure, etc. of water.

In addition, as shown in FIG. 11, in the oxygen dissolving apparatus 1, the cloth of the container body 2 is formed such that the cylindrical defrosting member 28 having both end surfaces opened is oriented along the vertical direction. Even if placed in the scene, the water discharged from the discharge port 4c and flows along the ceiling surface is deflected by the defrosting member 28, and the inner space of the container body 2 is lowered from the lower end of the defrosting member 28. Thinner membranes can also fall into waterfalls. In addition, although not shown in figure, this also applies to the said oxygen dissolving apparatus 20 similarly.

In this case, when the inner circumferential surface of the deliming member 28 is formed in a zigzag shape in plan view, as described above, the circumferential length of the inner circumferential surface is lengthened, and the surface area of the water flowing out of the deliming member 28 is increased. It is possible to increase the contact area with oxygen and increase the amount of oxygen in the water.                 

In addition, in the said example, although the arrangement position of each dripping plate 6, 7, 8, 24, 25, 26 is not specifically limited, It is preferable to arrange | position in the upper position in the container body 2. As shown in FIG. For example, within the range smaller than the value which arrange | positions the dehydration plate 6, 25, 26 in the upper end of the 1st water supply pipe 4a or the water supply pipe 22a, or tripled the inner diameter of the discharge ports 4c and 22b. May be disposed at a position lowered from the upper end, and the restriction plates 8 and 24 may be disposed above the discharge ports 4c and 22b.

In this case, since the falling distance from the respective dripping plates 6, 7, 8, 24, 25, and 26 is reduced, the fall distance until reaching the water surface of the water stored in the container body 2 can be increased. More oxygen can be dissolved in water by contact with water.

Moreover, you may arrange | position either an upper side or the lower side with respect to the positional relationship of each drift plate 6, 7, 8, 24, 25, 26, and can also install in substantially the same height position.

In addition, the shape of each of the drift plates 6, 7, 8, 24, 25, 26, for example, the shape of the outer circumferential surface or the inner circumferential surface, the shape and the formation position of the through holes 6a, 26a, etc. no. The shape of the outer circumferential surface or the inner circumferential surface formed in a zigzag shape (saw blade shape) may be a smooth curved shape, a square wave shape, or a combination of these saw blade shapes, curved shapes, and square wave shapes instead of the zigzag shape.

In addition, the arrangement | positioning number of the deicing plates 6, 7, 8, 24, 25, 26 is not limited at all, but installs one part or all of the said deicing plates 6, 7, 8, 24, 25, 26. It may be configured without the above, or may be provided in multiple stages than the above example.

Moreover, it is preferable that the upper end surfaces of the water supply pipe 4a, 22a are provided in the upper side in the container body 2, and since it can discharge water from the upper side in the container body 2 in this way, After discharging from the discharge ports 4c and 22b, the flow distance of water until it is stored in the bottom of the container body 2 can be lengthened, and the amount of gas dissolved in the water can be further increased.

Moreover, in the above example, although one water supply pipe 4a, 4b, 22a was provided in the container body 2, many water supply pipes 4a, 4b, 22a can also be provided. Moreover, although the inner diameter D1 of the water supply pipes 4a, 4b, 22a was formed uniformly except the part of the discharge port 4c, the inner diameter D2 of the drain pipes 5, 23 was formed uniformly, but these You may be formed so that it may change suitably.

Moreover, in the said example, although the upper part of the container body 2 was formed in the spherical curved surface which protruded outward, although not limited to this, although not shown in figure, even if it forms in the spherical curved surface which protruded inward, do. Even in this way, the water which protrudes to the ceiling surface of the container body 2 is made to flow along the ceiling surface to the inner peripheral surface side of the container body 2, ie, the 1st dripping plates 6 and 24 side, and the said 1st Since it can be made to flow and make it flow down by the defrosting members 6 and 24, the gas dissolution amount of water can be raised.

Moreover, in the said example, although it comprised so that oxygen may dissolve in water, the gas which dissolves in water may be inert gas, such as oxygen, argon, helium, and is not specifically limited. And when dissolving such an inert gas in water, a gas dissolving apparatus can be comprised as an inert gas dissolving apparatus which removes (deoxygenates) oxygen dissolved in water.

In addition, ozone may be dissolved in water (industrial drainage) instead of oxygen. In this way, by treating the industrial drainage, it is possible to efficiently remove or reduce harmful substances (for example, dioxins). Can be.

In addition, in the above example, in order to purify the water quality of rivers, lakes and swamps, oxygen is dissolved in the water, but the present invention is not limited thereto. For example, a truck carrying fish farming paper or live fish You may comprise so that oxygen may dissolve in the water in the fish tank installed in the tank. In addition, the oxygen dissolving apparatuses 1 and 20 can also be used for industrial wastewater treatment, livestock wastewater treatment, hydroponic (solution) cultivation, and the like.

As mentioned above, the gas dissolving apparatus which concerns on this invention can be used suitably when dissolving gas in water.

Claims (11)

A gas supply means including a container body having a sealed space, a supply pipe connected to the container body, supplying gas into the container body through the supply pipe, and pressurizing a gas pressure inside the container body to an atmospheric pressure or higher; A water supply means having a water supply pipe connected to the container body, the water supply means for supplying water into the container body through the water supply pipe, and a drain pipe connected to the container body to drain gas dissolved water stored in the bottom of the container body. In the gas dissolving device comprising a gas-liquid contacting the water and the gas in the container body, The water supply pipe is provided so that its one end side is disposed in the container body in the up and down direction, and has a discharge port opened to an upper end surface, and is configured to discharge the water from the discharge port toward the ceiling direction of the container body. Gas dissolving apparatus. 2. A container according to claim 1, further comprising a first defrosting member projecting inwardly from an inner surface of said container body, discharged from said discharge port toward said ceiling, and flowing along an inner surface of said container body. The gas dissolving apparatus is comprised so that water may flow into the internal space of the said container body from the protruding end of this 1st defrosting member. The plate-shaped second defrosting member which protrudes outward from the outer peripheral surface of one end of the said water supply pipe, is discharged toward the ceiling from the said discharge port, and is along the outer peripheral surface of the said water supply pipe. The gas dissolving apparatus is comprised so that the flowing water flows into the internal space of the said container body from the protruding end of this 2nd decontamination member. 3. The gas dissolving method according to claim 2, wherein the first defrosting member is composed of a plate-shaped member projecting inwardly from an inner circumferential surface of the container body and has a plurality of through holes penetrating the front and back. Device. The gas dissolving device according to claim 3, wherein the second defrosting member is provided with a plurality of through holes penetrating the front and back. The gas dissolving device according to claim 2 or 4, wherein the first defrosting member is formed in a wave shape when its protruded end edge is viewed in a plan view. The gas dissolving device according to claim 3 or 5, wherein the second delimiting member is formed in a wave shape when the protruded end edge thereof is viewed in a plan view. The gas dissolving device according to any one of claims 1 to 7, wherein the container body is formed of a spherical curved surface whose protruding portion protrudes outward or inward. The gas dissolving device according to any one of claims 1 to 8, wherein the drain pipe is constituted of a small diameter whose inner diameter is equal to or smaller than the inner diameter of the water supply pipe. The gas supply means according to any one of claims 1 to 9, wherein the gas supply means is connected to the water supply pipe, and is configured to discharge the gas together with the water from a discharge port of the water supply pipe. Gas dissolving device characterized in that. The gas dissolving device according to any one of claims 1 to 10, wherein the water supply pipe has a transverse area thereof reduced by the discharge port.

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