JP2004330050A - Ozonized-water supplying apparatus and fluid mixing apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an ozonized-water supplying apparatus constituted so that the ozone concentration of ozonized-water can be managed stably by preventing the ozone concentration from being diminished even when the ozonized water is left as it is or is used for bactericidal washing. <P>SOLUTION: This ozonized-water supplying apparatus is provided with: an ozone mixer 13 for mixing water with ozone and discharging the produced ozonized water 5 to a storage tank 10; a circulation system pipeline 14 for taking the ozonized water 5 out from the tank 10 and supplying the taken out ozonized water 5 to the mixer 13; a washing system pipeline 21 for supplying the ozonized water 5 in the tank 10 to the object to be washed; a branched pipeline 25 branched from the pipeline 21 and returned to the tank 10; and an ozone concentration measuring part 31 arranged on the pipeline 25 for measuring the ozone concentration of the ozonized water 5 by successively measuring the transition of the ultraviolet absorbance of the ozonized water 5. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an ozone water supply device that supplies ozone water used for various uses such as sterilization and disinfection while maintaining a high concentration.
[0002]
[Prior art]
Ozone water has a disinfecting and disinfecting action, and is characterized by the fact that only water remains on the object after the cleaning treatment and has no toxicity. For this reason, ozone water is widely used for disinfecting food and medical equipment. The artificial dialysis device has a function of extracting blood of a patient, performing dialysis treatment in the device, and returning the blood to the patient. Therefore, the used dialyser is sufficiently sterilized and washed to prevent the spread of infectious diseases transmitted via blood, such as hepatitis C (Patent Document 1).
[0003]
[Patent Document 1]
JP 2001-149469 A
[Patent Document 2]
Registered utility model No. 3048023
[Patent Document 3]
JP 2001-255271 A
[0004]
[Problems to be solved by the invention]
By the way, the conventional techniques as described above have the following problems to be solved.
In order to enhance the disinfecting effect, it is preferable to produce ozone water having a high ozone concentration. Therefore, the present inventors have developed an ozone mixer (Patent Document 2) capable of producing high-concentration ozone water. In this mixer, an ozone gas jet port is disposed at the maximum flow rate of water passing through a venturi tube, and the ozone gas is jetted from a reduced-pressure atmosphere into a high-speed water stream at once to produce a high-concentration ozone water of, for example, about 6 PPM. can do.
[0005]
However, since ozone water rapidly reduces the ozone concentration when left undisturbed, when it is used for sterilization cleaning, it is necessary to provide a device capable of stably controlling the concentration and confirming the sterilization cleaning effect during use. Required.
The present invention has been made by paying attention to the above points, and in a case where ozone water is accumulated or used for sterilization cleaning, it is intended to prevent a decrease in ozone concentration and to stably manage the concentration. It is an object of the present invention to provide an ozone water supply device.
[0006]
[Means for Solving the Problems]
The present invention solves the above problem by the following configuration.
<Configuration 1>
An ozone mixer for discharging ozone water generated by mixing water and ozone into a storage tank, a piping of a circulation system for taking out ozone water inside the storage tank and supplying the ozone water to the ozone mixer, Continuously measure changes in UV absorption of ozone water in the piping of the cleaning system that supplies ozone water inside the tank to the object to be cleaned, and in the branch piping that branches from the piping of this cleaning system and returns to the storage tank. And an ozone water supply device provided with an ozone concentration measuring section for measuring the ozone concentration of the ozone water.
[0007]
The ozone water inside the storage tank is guided to the ozone mixer, the ozone water inside the storage tank is maintained at a high concentration by mixing the ozone again and providing a piping of a circulation system for returning to the storage tank. it can. Further, a branch pipe returning to the storage tank is connected to a pipe of the cleaning system for supplying ozone water to the cleaning object, and the ozone concentration of the ozone water supplied to the cleaning object is continuously measured. You can check. When the ozone water passes through an ozone concentration measuring unit of a system for continuously measuring a change in the ultraviolet absorption amount of the ozone water, the ozone water has a reduced ozone concentration, but the portion is not supplied to the object to be cleaned, so that the cleaning effect can be maintained.
[0008]
<Configuration 2>
An ozone mixer for discharging ozone water generated by mixing water and ozone into a storage tank, a piping of a circulation system for taking out ozone water inside the storage tank and supplying the ozone water to the ozone mixer, A washing system pipe for supplying ozone water in the tank to the object to be washed, wherein the storage tank comprises a first tank and a second tank partitioned by a partition having a through hole; The ozone water outlet is opened in the first tank, the pipe of the washing system is opened in the first tank, and the pipe of the circulation system is opened in both the first tank and the second tank. An ozone water supply device having two intake ports, wherein new water for maintaining a reference water level in the storage tank is supplied to a vicinity of a piping intake port of the circulation system of the second tank.
[0009]
The storage tank includes a first tank and a second tank separated by a partition having a through hole. The partition wall having the through hole has a function of maintaining the water level of the first tank and the second tank equally, and a function of maintaining the ozone water concentration of the first tank. Since new water for maintaining the reference water level in the storage tank is supplied to the second tank, the ozone water concentration decreases. To minimize this reduction, fresh water is supplied near the pipe intake of the circulation system and immediately supplied to the ozone mixer. Since the piping of the circulation system has two water intake ports opened to both the first tank and the second tank, the ozone water in the first tank and the ozone water in the second tank are mixed at a constant mixing ratio. Supplied to Fresh water is sequentially supplied to the second tank according to the amount of ozone water discharged from the piping of the cleaning system. Therefore, the ozone water concentration can be stably maintained while maintaining the amount of water.
[0010]
<Configuration 3>
An ozone mixer that discharges ozone water generated by mixing water and ozone flowing through a venturi tube into a storage tank, and a circulation system that takes out ozone water from the storage tank and supplies the ozone water to the ozone mixer. A pipe for supplying ozone water in the storage tank to the object to be cleaned; andthe ozone mixer jets a gas containing ozone into the water accelerated in the venturi pipe to form ozone water in the water. And a second mixer for stirring the ozone water by colliding the ozone water with a wall provided in the flow path of the ozone water and sequentially connecting the ozone water discharge port to the inside of the storage tank. An ozone water supply device comprising an opening in ozone water.
[0011]
When an ozone-containing gas is jetted into water accelerated in a Venturi tube to mix ozone into water, ozone is explosively mixed with water to generate high-concentration ozone water. However, ozone that does not dissolve in water is simultaneously discharged to the outlet side. If a second mixer is disposed on the outlet side, the ozone water and ozone collide with the wall provided in the flow path and are stirred, so that the ozone not dissolved in the water by the first mixer is newly added to the water. As a result, a very high concentration of ozone water can be obtained. In addition, since the flow of the high-energy ozone water spouted from the Venturi pipe is adjusted by the second mixer and then discharged, noise can be suppressed.
[0012]
<Configuration 4>
A second fluid is ejected from an injector pipe opened into the Venturi tube into the first fluid accelerated by the small diameter portion in the Venturi tube to mix the first fluid and the second fluid. A first mixer, and a flow path for rectifying the mixed fluid of the first fluid and the second fluid flowing out of the first mixer by a predetermined distance to adjust the flow direction of the entire mixed liquid. And a wall block provided with step-like irregularities having a surface substantially perpendicular to the direction of flow for causing the mixed liquid of the first fluid and the second fluid flowing out of the rectifying flow channel to collide with each other, A pipe that is connected to the output end of the rectification flow path, accommodates the wall block, and has an enlarged diameter portion with an increased inner diameter such that the cross-sectional area of the flow path on the flow path is equal to or greater than the cross-sectional area of the rectification flow path. And a second mixer having the following.
[0013]
The types of the first fluid and the second fluid are arbitrary. The fluid may be a liquid or a gas.
The flow direction of the mixed liquid of the first fluid and the second fluid is adjusted while idling through the rectifying flow path having a predetermined length. That is, the vortex disappears and the whole flows in the direction from the upstream to the downstream. By aligning the flow directions in this way, the collision energy when colliding with the wall block having the step-like unevenness is increased, and a high mixing effect is exhibited in the second mixer. The wall block may be provided with step-like irregularities having a surface substantially perpendicular to the direction of flow, and the shape is arbitrary. By increasing the inner diameter of the pipe so that the cross-sectional area of the flow path is equal to or larger than the cross-sectional area of the rectifying flow path on the flow path, the flow resistance is reduced, and the mixing action of the first mixer is not hindered. I do.
[0014]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described using specific examples.
FIG. 1 is a system diagram showing a specific example of the ozone water supply device of the present invention.
In FIG. 1, a storage tank 10 for storing ozone water includes a first tank 1 and a second tank 2. The first tank 1 and the second tank 2 are separated by a partition 3.
The partition 3 is provided with an appropriate number of through holes 4. These through holes 4 have a so-called orifice effect. In order to maintain the concentration of the ozone water 5 stored in the storage tank 10, a piping 14 of a circulation system is provided. A pump 15 is provided in the pipe 14, and the ozone water taken out of the first tank 1 and the second tank 2 is guided to the ozone mixer 13, mixed with ozone, and returned to the storage tank 10 again.
[0015]
The ozone mixer 13 includes a first mixer 11 and a second mixer 12, which will be described later. The first mixer 11 is supplied with gaseous ozone and ozone water. Oxygen supplied from an oxygen cylinder or an oxygen generator (not shown) is sent to the ozone mixer 13 through the discharge device 7. In the discharge device 7, oxygen is activated by electric discharge, converted into a gas containing a large amount of ozone, and supplied to the ozone mixer 13. Note that the discharge device 7 is configured to be appropriately cooled by the blower 8. The specific configuration and operation of the ozone mixer 13 will be described later.
[0016]
A pipe 17 for taking out ozone water from the first tank 1 and a pipe 16 for taking out ozone water from the second tank 2 are connected to the pipe 14 of the circulation system via an adjustment valve 18. The adjustment valve 18 is for determining a mixing ratio of ozone water taken out to the piping 14 of the circulation system through the piping 16 and the piping 17. In addition, the high-concentration ozone water stored in the storage tank 10 is sent to an object 30 to be cleaned, for example, an artificial dialysis apparatus through a pipe 21 of a cleaning system. The pump 22 is for sending ozone water to the object 30 to be washed, and sends out ozone water through a check valve 23. Note that a branch pipe 25 is connected to the pipe 21 of the cleaning system.
[0017]
A return pipe 28 is connected from the branch pipe 25 via a minimum flow valve 26. This return pipe 28 is open to the first tank 1. Further, an ozone concentration measuring unit 31 is provided in the return pipe 28. The ozone concentration measuring unit 31 has a function of irradiating ultraviolet rays and quantitatively measuring the ozone concentration based on the amount of absorbed ultraviolet rays as described in Patent Document 3, for example. The ozone water discharged from the object 30 to be sterilized by supplying the ozone water is discarded after the ozone concentration is measured by the ozone concentration measurement unit 32 having the same configuration as the ozone concentration measurement unit 31. It is processed. When the cleaning target 30 is an artificial dialysis device, RO water is supplied to the artificial dialysis device after the cleaning process using ozone water is completed. This is sent from the pipe 37 to the artificial dialysis device via the electromagnetic valve 35.
[0018]
When the ozone water is sent out from the pipe 21 of the cleaning system, the ozone water 5 stored in the first tank 1 decreases. To compensate for this, a pipe 37, a solenoid valve 34, and a pipe 36 are provided. The end of the pipe 36 is arranged near a portion of the second tank 2 where the pipe 16 is open. In addition, a water level sensor 39 is provided in the storage tank 10 to monitor the water level of the ozone water 5 stored in the storage tank 10. When the water level falls below the reference value, the solenoid valve 34 is automatically opened, and new RO water (reverse osmosis) is supplied to the second tank 2 through the pipes 37 and 36. Instead of the RO water, pure water or other water purified by sterilization may be supplied.
[0019]
The above-described ozone water supply device is provided with a circulation system pipe 14 that guides water in the storage tank 10 to the first mixer 11, mixes ozone gas, and returns the mixed water to the storage tank 10 again. Maintain a high concentration of ozone water at all times. Ozone water is supplied from the storage tank 10 to the artificial dialysis device 30 as an object to be washed through a piping 21 of a washing system different from the piping 14 of the circulation system to perform sterilization washing. At this time, means for confirming that the ozone concentration of the ozone water supplied to the artificial dialysis device 30 is always higher than the reference value is required. Further, a means for confirming that ozone water is effectively contributing to the sterilization treatment inside the artificial dialysis device is required.
[0020]
Known methods for measuring the concentration of ozone water include a method using a reagent such as potassium iodide and a method of measuring the amount of absorbed ultraviolet light to be irradiated. The former method measures the ozone concentration of the ozone water sampled at a predetermined timing, and is not suitable for the purpose of continuously monitoring the ozone concentration of the ozone water flowing on the line. The latter method is more suitable than the former method in that the ozone concentration can be continuously monitored in the flow path of the ozone water, but the ozone water generated at a high concentration by irradiation of ultraviolet rays is more suitable. There is a problem that the ozone concentration decreases before use. Further, it is required that the sterilizing / cleaning ability is always stable.
[0021]
Therefore, the ozone water in the storage tank is continuously returned to the ozone mixer 13 by the piping 14 of the circulation system to maintain the ozone water at a high concentration. Further, in the circulation system pipe 14, a part of the ozone water immediately before being supplied to the artificial dialysis device of the washing system pipe 21 is returned to the storage tank 10 through the branch pipe 25, and an ultraviolet absorption type A first ozone concentration measuring unit 31 is provided. The ozone water flowing through this part is adjusted to the minimum flow required for measurement. Further, the ozone water after the measurement is returned to the storage tank 10 and is not supplied to the artificial dialysis device 30 which is an object of sterilization and cleaning. Ozone water maintained at a high concentration in the first tank 1 of the storage tank 10 is supplied to the artificial dialysis device 30 through the pipe 21 as it is.
[0022]
FIG. 2 is a longitudinal sectional view showing a specific internal structure of the ozone mixer 13 described above. The first mixer 11 shown in FIG. 2 flows into the inlet 47 into which the pressurized water flows.
An ozone water generation pipe 42 having a venturi pipe 43 between the discharge port 44 for discharging water and one end of the ozone water generation pipe 42 is opened at a small diameter portion of the venturi pipe 43 and flows through the ozone water generation pipe 42. An ejector pipe 41 that mixes ozone gas with water by using a water suction action is provided. The pump 15 shown in FIG. 1 is connected to the inflow port 47. Ozone water is supplied from the inflow port 47. The gas containing ozone is supplied from the ejector pipe 41. When the ozone water flows into the venturi tube 43, the flow of the ozone water rapidly increases. The inside of the ejector pipe 41 opening to the venturi pipe 43 is decompressed by the flow of the ozone water, and a negative pressure of about -1 atm is generated. Thereby, the gas containing ozone is forcibly blown out into the venturi tube 43. The liquid in which the ozone water and the gas containing ozone are mixed rapidly expands at the large diameter portion of the outlet of the venturi tube, and receives an explosive impact at this portion to be mixed at once.
Thus, a high concentration of ozone water is generated. This structure is described in Patent Document 2 described above.
[0023]
In the existing technology, the ozone water generated here is used as it is, and the gas containing ozone that cannot be mixed is separated, rendered harmless, and discharged. However, in this embodiment, the generated ozone water and the gas containing ozone that could not be completely mixed are led to the next second mixer 12. The second mixer 12 includes an enlarged diameter section 45. A substantially conical block 46 is disposed inside the enlarged diameter portion 45. The block 46 is arranged with the conical tip facing upstream and the bottom surface 46a facing downstream, and has a stepped unevenness 46b formed on the peripheral surface. Therefore, the step-like unevenness 46b has a shape in which disks whose diameters increase toward the downstream side are overlapped. The provision of the enlarged diameter portion 45 in the tube and the use of the substantially conical block 46 do not greatly obstruct the flow of the ozone water flowing in the tube, and prevent this portion from becoming a resistance and generating water pressure in the opposite direction. That's why.
[0024]
With the above configuration, the ozone water colliding with the step-like unevenness 46b generates a complicated vortex as shown in the figure. The gas bubbles of ozone-containing gas that collided with the stepped unevenness 46b together with the ozone water are finely crushed and mixed with the ozone water. By repeating this operation many times along the step-like unevenness 46b, the gas containing ozone dissolves in the ozone water, and ozone water having a high ozone concentration is generated. Thereafter, the ozone water is discharged through an outlet 49 to a first tank storing the ozone water. According to the experiment, when the concentration of ozone water generated using the first mixer 11 was 6 PPM and the second mixer 12 was connected and mixed, the mixing was about twice as large as 12 PPM or more. The ozone concentration could be increased up to that. When only the second mixer 12 is used alone, the concentration of the generated ozone water is only about 3 PPM. When two first mixers 11 are connected, the mixing function of the second mixer is reduced unless the water pressure of the ozone water is increased in the middle. In any case, it has been proved that the combination shown in FIG. 2 has remarkably high mixing efficiency.
[0025]
Further, in order to exhibit the above performance, it is necessary to provide a rectifying flow path of a predetermined length between the first mixer 11 and the second mixer 12. The ozone water immediately after leaving the first mixer 11 is a turbulent flow including many vortices. On the other hand, in the second mixer 12, the more the ozone water or the like whose flow direction is directed in the downstream direction collides vigorously, the higher the mixing effect is. For this purpose, it is preferable that the direction of the flow is adjusted by running the ozone water idling in the flow channel for rectification. This rectifying flow path can be constituted by a pipe having a substantially constant thickness. The length may be selected experimentally. It is preferable to produce an experimental machine using a transparent body, and to provide the second mixer 12 after the position where the flow of bubbles is adjusted. In FIG. 1, ozone that has not been dissolved in ozone water is stored in the upper space of the storage tank 10. If a so-called safety valve for preventing an abnormal rise in gas pressure is provided by preventing the inside of the storage tank 10 from being negative pressure, even if the supply of ozone gas is temporarily stopped, the ozone water The concentration can be maintained at a practical concentration for a while. Therefore, the cleaning effect of the target device to be cleaned by supplying the ozone water can be reliably maintained. Further, if the upper space of the storage tank 10 is filled with ozone gas, there is an effect that no bacteria enter the space.
[0026]
FIG. 3A is a longitudinal sectional view showing a mechanism for supplying fresh water to the storage tank 10. FIG. 3B is a side view showing a part of the piping of the cleaning system.
As shown in FIG. 3 (a), a pipe 36 protrudes from the bottom of the second tank 2 of the storage tank 10, and the tip of the pipe 36 is bent into a U-shape to open the pipe 16 of one circulation system. It is located nearby. By adjusting the adjustment valve 18 of the pipe 17 of the other circulation system that is open to the first tank 1 side, the ratio of the amount of ozone water taken out of the pipe 17 to the amount of ozone water taken out of the pipe 16 can be adjusted. Thereby, the concentration of the ozone water sent to the ozone mixer 13 is optimized. That is, the concentration of ozone water supplied to the piping 14 of the circulation system is adjusted in advance so that the ozone mixer 13 can generate ozone water having the maximum concentration under certain conditions. Since the pipe 36 supplies new water near the opening of the pipe 16, the ozone water having a relatively low concentration is sent from the pipe 16 to the pipe 14 of the circulation system. As shown by the arrow in FIG. 3A, the fresh water supplied from the pipe 36 is also supplied to the inside of the second tank 2. A part of the ozone water inside the second tank 2 is supplied to the pipe 16.
[0027]
As shown in FIG. 3B, a branch part 28 is provided in the pipe of the cleaning system 21, and a branch pipe 25 is connected to the branch part 28. From this branch pipe 25, the minimum amount of ozone water required for measuring the concentration of ozone water is taken out. This is sent to the ozone water concentration measuring section 31 in the manner already described with reference to FIG.
[0028]
FIG. 4 is a diagram for explaining a treatment state and a concentration change of the ozone water in the storage tank.
In FIG. 4A, for example, an operation in a case where the water level has dropped due to the supply of the ozone water 5 in the first tank 1 to the pipes 21 and 14 will be described. Arrows 51 to 55 in FIG. 4A indicate the flow and the direction of the ozone water. First, as indicated by an arrow 52, ozone water is supplied from the first tank 1 to the pipe 21 of the cleaning system. On the other hand, as shown by arrows 53 and 54 from the first tank 1 and the second tank 2, the ozone water 5 is taken out from the piping 14 of the circulation system and is further concentrated by the ozone mixer 13 so that the first tank 1 Return to On the other hand, when the water level in the first tank 1 decreases, ozone water flows into the first tank 1 from the second tank 2 through the through hole 4 as shown by an arrow 51. If the diameter of the through hole 4 is sufficiently small, the ozone water is supplied little by little from the second tank 2 in a state where the concentration of the ozone water in the first tank 1 is not significantly reduced by the orifice effect. , The water level can be maintained at the reference value. When new water is supplied to the second tank 2 from the pipe 36, a part of the water flows into the second tank 2 as indicated by an arrow 55. Since it is difficult to flow into the first tank 1 side, a decrease in the concentration of ozone water stored in the first tank 1 is prevented. A part of the new water supplied from the pipe 36 is supplied to the ozone mixer 13 through the pipe 16 as shown by an arrow 54.
[0029]
As shown in FIG. 4B, by performing the above-described control, the ozone concentration in the first tank 1 is stably maintained at the set very high level. On the other hand, the concentration of ozone water stored in the second tank 2 slightly varies depending on the amount of ozone water sent to the pipe 21 of the cleaning system. The ozone water flowing through the pipe 14 of the circulation system mixes the ozone water of the second tank 2 with the ozone water of the first tank 1 and contains a large amount of new water supplied from the pipe 36. Will be lower. In addition, when ozone water is supplied to the ozone mixer 13 at this concentration, the ozone mixer 13 can generate ozone water having a concentration equal to or higher than the target concentration of the first tank 1 under a condition that the ozone water is supplied. It is preferable to determine the concentration of ozone water supplied to 14. This concentration can be selected by adjusting the adjustment valve 18 as described above. In addition, the concentration of the ozone water taken out for measurement through the branch pipe 25 and the pipe 28 shown in FIG. 1 greatly decreases after passing through the ozone concentration measuring unit 31. This concentration is at the level shown in FIG. However, since the amount of water is extremely small, there is no possibility that a substantial decrease in the concentration of ozone water inside the first tank 1 will be caused even if the water is returned to the first tank 1 as it is.
[0030]
On the other hand, as shown in FIG. 1, a second ozone concentration measuring unit 32 of an ultraviolet absorption type is provided in the flow path of the ozone water which has been subjected to the sterilizing and cleaning treatment by the artificial dialysis device 30. This is for continuously monitoring the used ozone concentration. The first ozone concentration measurement unit 31 is for quality control of ozone water supplied to the artificial dialysis device, and displays a measured value to confirm that the concentration is equal to or higher than a certain value. For example, a criterion may be established that the ozone concentration is sufficient if the ozone concentration is 6 PPM or more. On the other hand, the second ozone concentration measuring unit 32 displays the measured value in order to confirm whether or not the ozone water supplied to the artificial dialysis device has actually functioned effectively. For example, a criterion is established that the ozone concentration should be 2 PPM or more. If the ozone concentration is 1 PPM or less, it is determined that there is a possibility that the ozone required for sterilization and cleaning in the artificial dialysis device is insufficient. If the ozone concentration is 4 PPM or more, it may be determined that the sterilization and washing in the artificial dialysis machine is almost completed and ozone is no longer consumed.
[0031]
The difference between the ozone concentration of the first ozone concentration measurement unit 31 and the ozone concentration of the second ozone concentration measurement unit 32 is related to the amount of ozone that has contributed to sterilization and cleaning inside the artificial dialysis device. Therefore, by displaying this difference, the sterilizing and cleaning effect can be confirmed. At the same time, when the difference decreases after a lapse of the predetermined time, it can be confirmed that the sterilization and cleaning processing is almost completed.
[0032]
By the control as described above, the ozone water supply device of the present invention can always store high concentration ozone water in the storage tank and send out ozone water to the piping of the cleaning system while maintaining the concentration. In addition, by using an extremely efficient ozone mixer, the state of high-concentration ozone water can be maintained. Further, since the storage tank is separated into the first tank and the second tank by the partition wall, and new water that is insufficient is supplied to the second tank, the ozone water concentration in the first tank can be maintained at a high level. Further, fresh water supplied to the second tank is sent to a substantial part of the ozone mixer through the piping of the circulation system, so that the problem of greatly reducing the ozone concentration in the second tank is also solved. ing.
[0033]
Although the above-described ozone water supply device has been described in the embodiment as an example used for disinfecting and cleaning an artificial dialysis device, ozone water is used in various fields such as food-related devices, medical device-related devices, and the like. In such a field, the ozone water supply device can be widely used.
[0034]
FIG. 5 is an explanatory diagram showing an application example of the present invention.
In the above embodiment, the description has been given of the apparatus in which the high-concentration ozone water is stored in the storage tank and the concentration is maintained at the high concentration. The mixer of the device dissolves ozone gas into pure water such as RO water. The ozone water thus generated is sent to a purification target, and is used for purification processing. On the other hand, in the embodiment of (a) of this figure, air is mixed into the sewage to promote the function of the enzyme. The above-mentioned mixer is used to mix the sewage and air. In the embodiment shown in FIG. 2B, ozone is mixed into the sewage and the sewage is directly purified by the power of ozone.
[0035]
In general, in the treatment of sewage accumulated in a septic tank, air bubbles are blown into the sewage using an aeration device to promote the action of an enzyme to accelerate the purification process. For this purpose, a pipe for blowing air bubbles is arranged in the waste water, and compressed air is sent by a compressor. However, even if a large amount of air bubbles are supplied into the septic tank by the aeration apparatus having this type of structure, most of the air bubbles are lifted as they are, and only a very small amount is dissolved into the wastewater. Therefore, although a large amount of power is consumed to drive the compressor for a long time, the device is extremely inefficient.
[0036]
On the other hand, in the embodiment shown in FIG. 3A, air and sewage can be mixed using the mixer described with reference to FIG. 2, and a large amount of air can be mixed into water very efficiently. Of course, the enzymes premixed in the sewage will also mix uniformly at the same time.
This makes it possible to bring sufficient air into contact with the enzyme dispersed throughout the wastewater to promote the action of the enzyme.
[0037]
The apparatus shown in FIG. 7A takes out sewage 65 from a septic tank 60 through a take-out pipe 61 and a pump 62. The sewage 65 passes through the first mixer 11, the rectifying flow path 19, and the second mixer 12, and is mixed with a large amount of air. After that, it is returned to the septic tank 60 using the return pipe 63. The first mixer 11 is composed of a Venturi pipe as described with reference to FIG. 2, and blows air from the injector pipe 41 opened into the Venturi pipe to the sewage water 65 accelerated by the small diameter portion 67 so that the sewage 65 Mix with air. The sewage 65 flowing out of the first mixer 11 is a turbulent flow having a large number of vortices as described with reference to FIG. When the sewage 65 flows through the rectifying flow path 19 having a substantially uniform inner diameter for a predetermined length, the flow of the sewage 65 is adjusted so as to be directed in the downstream direction, that is, in the left direction in the figure. Then, it flows into the second mixer 12.
[0038]
In the second mixer 12, a block 46 having step-like unevenness as described with reference to FIG. 2 is arranged on the flow path. Therefore, the mixture of air bubbles and sewage collides with the step-like irregularities, and is further stirred. At this time, if the block 46 prevents the flow of sewage water and the resistance in the opposite direction is applied, the function of the Venturi tube of the first mixer 11 is reduced. Therefore, the cross-sectional area of the flow path of the second mixer is selected sufficiently wide at any place. That is, the sewage whose flow direction has been adjusted in the downstream direction by the rectifying flow path 19 vigorously collides with the step-like unevenness of the block 46, so that a large amount of air that has not been sufficiently mixed is contained in the sewage. Melt into The large amount of air melted in this way helps the enzyme work. Therefore, the purification process proceeds promptly with higher efficiency as compared with a septic tank using a conventional aerator.
[0039]
In the apparatus shown in FIG. 2B, sewage and ozone are introduced into the first mixer, and a large amount of sewage is introduced into the sewage by using the first mixer 11, the rectifying flow path 19, and the second mixer 12. Of ozone. An ozone generator 66 is connected to the injector pipe 41 of the first mixer. That is, the wastewater is directly purified by the power of ozone, rendered harmless, and discharged. Therefore, a septic tank for accumulating sewage is not required. Of course, depending on the nature of the sewage, there are cases where the device shown in FIG. 5B is suitable and cases where the device shown in FIG. 5A is suitable. If the apparatus as shown in FIG. 5B can be adopted, the ozone generator and the ozone generator as described above can be installed inside the septic tank without increasing the size of the septic tank conventionally used for sewage treatment. By installing the mixer, it is possible to provide more wastewater treatment capacity than before in a sufficiently small space. Therefore, when wastewater treatment standards discharged from factories and the like are revised by law and require more treatment capacity than before, high cost at low cost without increasing the size of existing facilities It becomes possible to switch to a wastewater treatment device with a function.
[0040]
When a new sewage treatment facility is installed, a large-sized septic tank is not required, so that an economical sewage treatment facility can be provided. The device as shown in FIG. 5B is used not only for mixing sewage and ozone but also for mixing various types of first and second fluids that are difficult to mix with Taga. it can. In addition, if a block having a step-like unevenness having a surface substantially perpendicular to the flow direction is used, the first fluid or the second fluid can be mixed without stagnation or backflow in the second fluid. . Therefore, there is no possibility that various substances mixed into these fluids adhere to the inside of the pipe, and it can be said that the structure is optimal for sewage treatment and the like.
[Brief description of the drawings]
FIG. 1 is a system diagram showing a specific example of an ozone water supply device according to the present invention.
FIG. 2 is a longitudinal sectional view showing the internal structure of the ozone mixer according to the present invention.
FIG. 3 is an enlarged view showing a part of a pipe according to the present invention, in which (a) is a longitudinal sectional view showing a mechanism for supplying new water to a storage tank, and (b) is a part of a pipe of a cleaning system. FIG.
FIGS. 4A and 4B are diagrams illustrating a change state of ozone water in a storage tank according to the present invention, wherein FIG. 4A is a diagram illustrating a change in the water level of ozone water, and FIG. FIG.
FIG. 5 is an explanatory diagram showing an application example of the present invention.
[Explanation of symbols]
1 First tank
2 Second tank
3 partition
4 Through-hole
5 ozone water
7 Discharge tube
8 Blower
10 Storage tank
11 First mixer
12 Second mixing machine
13 Ozone mixing machine
14 Piping of circulation system
15 Pump
16, 17 piping
18 Adjusting valve
21 Cleaning system piping
22 pump
23 Check valve
25 Branch piping
26 Minimum Flow Valve
27 Sampling valve
28 piping
30 Objects to be cleaned
31 First concentration measuring unit
32 Second concentration measuring unit
34, 35 Solenoid valve
36, 37 Piping

Claims (4)

An ozone mixer that discharges ozone water generated by mixing water and ozone into a storage tank,
A pipe of a circulation system that takes out ozone water inside the storage tank and supplies the ozone water to the ozone mixer,
A pipe of a cleaning system for supplying ozone water inside the storage tank to an object to be cleaned,
An ozone concentration measuring unit for continuously measuring a change in the ultraviolet absorption amount of the ozone water and measuring the ozone concentration of the ozone water was provided in a branch pipe branched from the pipe of the cleaning system and returning to the storage tank. Ozone water supply device characterized by the above-mentioned. An ozone mixer that discharges ozone water generated by mixing water and ozone into a storage tank,
A pipe of a circulation system that takes out ozone water inside the storage tank and supplies the ozone water to the ozone mixer,
A washing system pipe for supplying ozone water inside the storage tank to the object to be washed,
The storage tank comprises a first tank and a second tank partitioned by a partition having a through hole,
The ozone water outlet of the ozone mixer is opened in the first tank,
The pipe of the cleaning system is opened to the first tank,
The piping of the circulation system has two water intake ports that open to both the first tank and the second tank,
An ozone water supply apparatus, wherein new water for maintaining a reference water level in the storage tank is supplied to a vicinity of a pipe intake of the circulation system of the second tank. An ozone mixer that discharges ozone water generated by mixing ozone with water flowing through a venturi tube into a storage tank,
A pipe of a circulation system that takes out ozone water inside the storage tank and supplies the ozone water to the ozone mixer,
A washing system pipe for supplying ozone water inside the storage tank to the object to be washed,
The ozone mixer mixes ozone water with a first mixer that ejects a gas containing ozone into water accelerated in a venturi tube to mix ozone into water, and a wall provided in a flow path of ozone water. An ozone water supply device comprising an ozone water discharge port opened in the ozone water inside the storage tank by sequentially connecting a second mixer that stirs the mixture. Injecting a second fluid from an injector pipe opened into the Venturi pipe into the first fluid accelerated by the small diameter portion in the Venturi pipe, mixing the first fluid and the second fluid. 1 mixer,
A rectifying flow path for causing a mixed liquid of the first fluid and the second fluid flowing out of the first mixer to run for a predetermined distance, and to adjust the flow direction of the entire mixed liquid;
A wall block provided with step-like irregularities having a surface substantially perpendicular to the flow direction for colliding a mixed liquid of the first fluid and the second fluid flowing out of the rectifying flow path; A pipe having an enlarged diameter portion that is connected to the output end of the flow channel, accommodates the wall block, and has an enlarged inner diameter such that the cross-sectional area of the flow channel on the flow channel is equal to or greater than the cross-sectional area of the rectification flow channel. A fluid mixing device, comprising: a second mixer provided.

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