JPH08229582A - Ozonized water producing device - Google Patents

Abstract

PURPOSE: To provide an ozonized water producing device capable of easily and safely producing an ozonized water having a concentration corresponding to a use field. CONSTITUTION: This device consists of an ozonizer 4 for generating ozone, a surge tank 7 for mixing raw water with a circulated ozone water, and a voltex turbine pump 6 for performing air-liquid mixing of the ozonized water from the surge tank 7 or the raw water fed directly with the ozone fed from the ozonizer 4, and feeding the mixture in a pressurized state. The ozonized water discharged from the voltex turbine pump 6 is fed as a higher concentration ozonized water directly or by using an after-mixture 13 or/and a venturi scrubber 12, while a desired pressure is held by using a pressure relief valve 10.

Description

Detailed Description of the Invention

[0001]

INDUSTRIAL APPLICABILITY The present invention can stably and efficiently obtain ozone water that effectively functions for sterilization, deodorization, decolorization, oxidation, etc. during environmental improvement, purification and production, processing and distribution. The present invention relates to a device for producing highly efficient and highly concentrated ozone water.

[0002]

2. Description of the Related Art Ozone is widely used as a strong oxidant in various industrial fields for the purposes of sterilization, decolorization, deodorization and improvement of transparency. The usage form of this ozone is
There are cases where ozone is used as a gas and cases where ozone is dissolved in water and used. Recently, ozone water is widely used in many industrial fields. .

[0003] Generally, such ozone water is produced by dissolving gaseous ozone generated by an ozonizer in water, but most of them are made into fine bubbles in order to enhance contact with water. It depends on the means of dissolving in water. For example, in JP-A-1-194994, an air diffuser having a large number of holes formed in the tube wall is used.
No. 1991 employs a means for increasing the mixing efficiency of ozone and water by means of a separation part constituted by a porous separation wall.

[0004]

With the recent expansion of the field of use of ozone water, for example, 0.4-0.4% for treating clean water.
Ozone water with a concentration of 0.5 mg / l is required, and sewage treatment requires 10-40 mg / l of ozone water.
Depending on the field of use, the quality and quantity of ozone water is inevitably becoming a problem. Although the ozone water production technology disclosed in the above-mentioned published patents and the like is excellent, all of them are simply focused on how to efficiently dissolve ozone in water, and thus have many applications. It is not yet satisfactory to immediately and stably produce ozone water of a predetermined quality and amount of water for the purpose of using.

In view of the above circumstances, it is an object of the present invention to provide a compact ozone water producing apparatus capable of instantly and stably supplying ozone water of a quality and water amount suitable for the intended use. It is what

[0006]

In order to achieve the above object, an ozone water producing apparatus of the present invention comprises an ozonizer for generating ozone and an ozone water and a raw material which are automatically replenished with the raw water. A surge tank having a function of mixing with water, and raw water containing ozone water supplied from the surge tank or / and raw water directly supplied without passing through the surge tank are received together with ozone generated by an ozonizer, It is composed of a vortex turbine pump that mixes raw material water containing water or / and raw material water and ozone, and sends it out in a pressurized state. Ozone water sent from the vortex flow turbine pump has a predetermined pressure and flow rate by a pressure relief valve. While maintaining the temperature, the ozone effect can be enhanced and supplied directly or by an after-mixer. It is an feature.

More functionally, the ozone water producing apparatus of the present invention is a surge having a function of automatically replenishing the ozonizer for generating ozone and the raw material water and mixing the received ozone water and the raw material water. A tank and raw water containing ozone water supplied from the surge tank or / and raw water directly supplied without passing through a surge tank are accepted together with ozone generated by an ozonizer, and raw water containing ozone water and / or raw material It is composed of a vortex turbine pump that mixes water and ozone and sends them out under pressure, and a venturi scrubber that dissolves ozone generated by the ozonizer into ozone water from the vortex turbine pump. Ozone water directly or after the pressure relief valve maintains the specified pressure and flow rate. It is characterized in that it has configured to be able to supply to increase the ozone effect by chromatography mixer or / and venturi scrubber.

In the present invention, ozone basically uses air as a raw material, but concentrated oxygen obtained by concentrating air in an oxygen concentrator may be used.

As the ozonizer for generating ozone, conventionally known ones such as silent discharge and ultraviolet rays can be used, but it is desirable to use an silent ozonizer as a compact device.

The swirl turbine pump is a device for producing ozone water by sucking raw water and ozone at the same time by rotating a turbine-shaped impeller provided in a casing and dissolving ozone as fine bubbles in water to produce ozone water. Ozone water can be sent under pressure.

The aftermixer dissolves undissolved ozone existing as bubbles in the ozone water discharged from the swirl turbine pump as much as possible to enhance the degree of dissolution in water to form ozone water containing many ozone components. Then, specifically, a multiple pipe having a total diameter of 2.0 to 3.5 m and having a diameter smaller than the pipe diameter of the ozone water distribution pipe, and the multiple pipe is provided so as to surround the outer circumference of the surge tank. With this, the device main body can be compactly assembled.

The Venturi scrubber also receives ozone from the ozonizer and ozone water discharged from the swirl turbine pump or / and raw material water directly, and mixes it with gas and liquid to produce ozone water having a higher ozone concentration. In order to obtain even higher concentration of ozone water, the ozone water sent from the Venturi scrubber may be supplied to the after mixer.

The pressure relief valve discharges the ozone water discharged from the swirl turbine pump to the outside of the apparatus body while maintaining a predetermined pressure and flow rate, but the pressure of the ozone water discharged from the swirl turbine pump is constant. When the pressure exceeds the pressure, part of the ozone water is caused to flow into the surge tank to keep the pressure of the ozone water constant. At that time, since the ozone water is decompressed by the operation of the pressure relief valve, the water temperature in the surge tank is reduced by the ozone vaporized by the decompression, and the water with a low water temperature is supplied to the swirl turbine pump. The solubility can be further improved. Further, since ozone water is supplied into the surge tank, ozone water and raw material water are mixed in this surge tank, and this mixed water is further gas-liquid mixed with ozone from the ozonizer by the swirl turbine pump. The ozone concentration can be further increased.

The equipment, pipes and the like used in the ozone water producing apparatus of the present invention are all made of a material such as stainless steel which is not easily affected by oxidation by ozone.

[0015]

Since the ozone water producing apparatus of the present invention comprises an ozonizer, a surge tank, a vortex turbine pump or these and a venturi scrubber,
In any case, ozone water of a predetermined quality can be easily supplied by the usage methods exemplified in 1) to 6) below. 1) The raw water containing ozone water from the surge tank and the ozone from the ozonizer are supplied to the swirl turbine pump to form ozone water. 2) Ozone water is produced by directly supplying raw material water and ozone from the ozonizer to the swirl turbine pump without using a surge tank. 3) Raw material water containing ozone water from the surge tank and ozone from the ozonizer are supplied to the swirl turbine pump to form ozone water, and this ozone water is passed through a venturi scrubber to form high-concentration ozone water. 4) Without using a surge tank, the raw material water and ozone from the ozonizer are directly supplied to the swirl turbine pump to form ozone water, and the obtained ozone water is passed through a venturi scrubber to form high-concentration ozone water. 5) The raw material water is directly supplied to the Venturi scrubber without passing through the surge tank and the vortex turbine pump, and ozone is supplied from the Ozonizer into ozone water in the Venturi scrubber. 6) The ozone water discharged from the vortex turbine pump is supplied to the after-mixer to obtain high-concentration ozone water.

[0016]

Embodiments of the ozone water producing apparatus according to the present invention will be described below more specifically with reference to the accompanying drawings. FIG. 1 is a block diagram showing an embodiment of the ozone water producing apparatus of the present invention. The ozone water producing apparatus 1 basically includes a pair of ozonizers 4 and 4 for automatically generating and supplying ozone, and raw material water automatically. Surge tank 7 having a function of mixing supplied and received ozone water, and raw water containing ozone water supplied from the surge tank 7 and / or raw water directly supplied without passing through the surge tank Is mixed with ozone generated by the ozonizer 4, raw water containing ozone water, and / or the raw water is mixed with ozone, and the vortex turbine pump 6 is supplied.

The ozonizers 4 and 4 suck in air, which is a raw material of ozone, by the air pump 2, remove moisture by the dryer 3, and then convert the dried air into ozone by the ozonizer 4, which is then converted into the flow meter 5 and the pipe. Although it is supplied to the swirl turbine pump 6 via P2, in this device, vapor phase ozone can also be taken out from the pipe P1 via the flow meter 5. Two ozonizers 4 are provided in parallel so that they can be switched and used, or two can be used together for output adjustment.

The vortex turbine pump 6 includes an ozonizer 4
From the pipe P3 through the surge tank 7, or the raw water directly supplied from the pipe P4, or the received ozone water and the pipe P3.
Ozone water obtained by previously mixing raw material water supplied from the surge tank 7 is supplied from the surge tank 7 to gas-liquid mix to form ozone water, and is supplied as ozone water from the discharge side to a necessary place. It is a thing.

The surge tank 7 has an inner pipe in the center of the inside, and its lower end side is connected to the suction side of the swirl turbine pump 6 via a pipe P5, and the raw material water supplied through the pipe P3 is directly or The ozone water for recirculation supplied through the pipe P7 is supplied to the swirl turbine pump 6 through the pipe P5. The surge tank 7 includes a pipe P1 inside the surge tank 7.
Eraser 8 for purging the exhaust ozone sent into the atmosphere into the atmosphere, and a liquid level controller for keeping the raw water such as tap water supplied from the pipe P3 in the surge tank 7 at a constant liquid level. 9 is attached. Therefore, the liquid level controller 9 detects the liquid level in the surge tank 7 and feeds it back to the feed water feed valve from the pipe P3, and the feed water can be automatically replenished by opening and closing the feed valve. .

The pipe P6 connected to the discharge side of the vortex turbine pump 6 is connected to the lower part of the surge tank 7 via the pressure relief valve 10 and the pipe P7, and the ozone water is supplied by the pipe P6 and the pipe P7. A circulation path is formed for reusing.

A pipe P8 is diverged in the middle of the circulation path, and ozone water discharged from the swirl turbine pump 6 is directly extracted through the pipe P8 and supplied to a pressure tank (not shown). Alternatively, it is configured for direct use.

Further, in the middle of the circulation path, in order to make the concentration of the ozone water discharged from the vortex turbine pump 6 higher, the diameter is smaller than the pipe diameter of the circulation path and the total length is 2.0 to 3. An after-mixer 13 composed of a 5 m multi-tube is branched and connected.
A branch pipe 14 formed of a T-shaped three-way pipe is connected to the outlet side of the through a flow control valve 16.

A pipe P9 for supplying highly concentrated ozone water to, for example, a water tank 15 is connected to one side of the branch pipe 14 provided on the discharge side of the aftermixer 13, and the other side thereof. The undissolved ozone discharged from the branch pipe 14 is stored in the surge tank 7 and the eraser 8.
A pipe P10 for discharging into the atmosphere via is connected.

In each of these paths, the discharge side of the vortex turbine pump 6, the pressure relief valve 10 and the branch pipe 1
Each part between 4 and 4 constitutes a path of pressurized ozone water pumped up by the vortex turbine pump 6, and a pipe P7 connected to the pressure relief valve 10 and
Both pipes P9 and P10 connected to the branch pipe 14 are paths that flow at almost normal pressure.

The ozone water producing apparatus 1 can produce ozone water of a desired quality by applying various methods exemplified below.

Method of Use 1 Ozone obtained from the ozonizer 4 is supplied to the swirl turbine pump 6 through the pipe P2, while raw water such as tap water is once supplied to the surge tank 7 through the pipe P3.
This is directly supplied to the swirl turbine pump 6, or ozone water obtained by previously mixing the ozone water supplied into the surge tank 7 via the pressure relief valve 10 and the pipe P7 with the raw water from the pipe P3. The surge tank 7
Is supplied to the swirl turbine pump 6 from the lower part of the pipe via a pipe P5, and is mixed with ozone supplied from the ozonizer 4 in a gas-liquid manner.

The ozone water generated in the vortex turbine pump 6 is pumped up and then piped from the pipe P8 via the pipe P6, the after-mixer 13 or the branch pipe 1.
4 and the pipe P9 are sent to the water tank 15.
At that time, the ozone water discharged from the vortex turbine pump 6 is normally held in a pressurized state of about 1.5 kg / cm ² f. The ozone water from the pipe P8 may be used directly, or may be once received in a pressure tank (not shown) and then used as ozone water.

Ozone, which is not dissolved in water by the aftermixer 13, is decomposed by the eraser 8 from the branch pipe 14 through the discharge path of exhaust ozone, the pipe P10 and the surge tank 7 and is then discharged to the atmosphere. .

In the ozone water discharged from the vortex turbine pump 6, the pressure relief valve 10 operates when the pressure in the pipe P6 exceeds a predetermined value, and a part of the ozone water is passed through the pressure relief valve 10 and the pipe P7. Recirculation in the surge tank 7 maintains a constant pressure at all times.

Method of use 2 Without using the raw material water introduced into the surge tank 7, the raw material water from the pipe P4 is directly introduced into the swirl turbine pump 6 together with the ozone from the pipe P2. A large amount of ozone water is obtained by various methods. As an alternative to this method, the raw material water from the pipe P3 and the surge tank 7 and the raw material water from the pipe P4 can be appropriately mixed and used.

The ozone producing apparatus 1 of the present invention is provided with a venturi scrubber 12 between the discharge side of the swirl turbine pump 6 and the pressure relief valve 10 in order to supply ozone water having a higher concentration. Flow meter 1 with ozone from ozonizer 4 to 12
1, the ozone water supplied directly through the pipe P11 and supplied through the vortex turbine pump 6 and the pipe P12 is gas-liquid mixed in the venturi scrubber 12,
The obtained high-concentration ozone water is supplied from the pipe P8 or to the after-mixer 13 to further increase the concentration, and the branch pipe 1
4, it is configured to be supplied to the water tank 15 through the pipe P9.

In the figure, P13 is a pipe for supplying the ozone water obtained by the venturi scrubber 12 and P
Reference numeral 14 is a pipe for supplying raw water such as tap water directly to the Venturi scrubber without using the vortex turbine pump 6.

[0033]

The ozone water producing apparatus of the present invention comprises an ozonizer, a surge tank, and a vortex turbine pump. The ozone supplied from the ozonizer and the raw material water or surge supplied directly or through the surge tank. Ozone water, which is a mixture of ozone water and raw material water that have been mixed in advance in the tank, produces ozone water by gas-liquid mixing in a swirl turbine pump, and the obtained ozone water is optionally passed through an after-mixer. Alternatively, it is possible to produce a concentrated ozone water through a venturi scrubber, or a venturi scrubber and an aftermixer.

[Brief description of drawings]

FIG. 1 is a block diagram showing an example of an ozone water generator of the present invention.

[Explanation of symbols]

 1 Ozone Water Generator 2 Air Pump 3 Dryer 4 Ozonizer 6 Whirlpool Turbine Pump 7 Surge Tank 8 Eraser 9 Liquid Level Controller 10 Pressure Relief Valve 12 Venturi Scrubber 13 After Mixer 14 Branch Pipe 15 Water Tank 16 Flow Control Valve P1 to P14 Pipe

Claims (6)

[Claims] 1. An ozonizer for generating ozone, a surge tank having a function of automatically replenishing raw water and mixing the received ozone water with the raw water, and an ozone water supplied from the surge tank. The raw material water containing and / or the raw material water directly supplied without passing through the surge tank is accepted together with the ozone generated by the ozonizer, and the raw material water containing the ozone water or / and the raw material water and ozone are mixed,
It consists of a swirl turbine pump that sends out in a pressurized state, and supplies ozone water sent out from the swirl turbine pump directly while maintaining a predetermined pressure and flow rate with a pressure relief valve or by further enhancing the ozone effect by an after-mixer. An ozone water production apparatus characterized in that it is configured to be able to. 2. An ozonizer for generating ozone, a surge tank having a function of automatically replenishing raw water and mixing the received ozone water with the raw water, and an ozone water supplied from the surge tank. The raw material water containing and / or the raw material water directly supplied without passing through the surge tank is accepted together with the ozone generated by the ozonizer, and the raw material water containing the ozone water or / and the raw material water and ozone are mixed,
It consists of a vortex turbine pump that sends out in a pressurized state, and a venturi scrubber that dissolves ozone generated by the ozonizer in ozone water from the vortex turbine pump. An ozone water producing apparatus characterized in that it can be supplied directly or with an increased ozone effect by an after-mixer and / or a venturi scrubber while maintaining a predetermined pressure and flow rate. 3. The ozone water delivered from the swirl turbine pump is configured such that a part of the ozone water is supplied to a surge tank via a pressure relief valve when the pressure of the pressurized ozone water exceeds a certain pressure. The ozone water production apparatus according to claim 1 or 2, characterized in that. 4. The ozone water passed through the after-mixer is supplied as normal ozone water through a branch pipe, and undissolved ozone in the ozone water is discharged into the atmosphere through the surge tank and the eraser. The ozone water production apparatus according to claim 1 or 2, which is configured. 5. The production of ozone water according to claim 1, wherein the Venturi scrubber is configured to directly supply raw material water for dissolving ozone without passing through a swirl turbine pump. apparatus. 6. The aftermixer has a diameter smaller than the diameter of a pipe for distributing ozone water and has a total length of 2.0 to 3.5 m.
3. The ozone water producing apparatus according to claim 1 or 2, wherein the ozone water producing apparatus is composed of multiple tubes.