JP2000201569A - Water purification device and water tank device - Google Patents

Abstract

(57) Abstract: Provided is a water purification device which can easily irradiate ultraviolet rays to the entire photocatalyst, has high purification efficiency, and can be downsized, and a water tank device using the same. A photocatalyst is supported on a substrate using a fluororesin mesh as a substrate in a treatment tank of a purification device main body including an inlet for introducing water to be treated, an outlet for extracting treated water, and a treatment tank. The filter was disposed so that the water to be treated passed while contacting the photocatalyst of the mesh, and an ultraviolet irradiation means was provided so as to irradiate the photocatalytic substance of the filter with ultraviolet light. Since the filter uses a mesh made of glass fiber as a base, ultraviolet rays can pass between the meshes and activate a photocatalyst located far from the ultraviolet irradiation means, thereby increasing purification efficiency. Since the mesh is made of glass fiber, it is stable without being decomposed by the photocatalyst, has no adverse effect on the water to be treated, and has excellent durability against the water to be treated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water purifying apparatus for purifying water using a filter carrying a photocatalytic substance, and a water tank apparatus using the same.

[0002]

2. Description of the Related Art When breeding organisms such as fish and shellfish in freshwater or seawater appreciation fish tanks, aquatic plant appreciation aquariums, fish farming aquariums, aquarium viewing tanks, etc., they do not grow in the natural world. High growth density. For this reason, the excrement and feed of fish and shellfish are decomposed by oxygen and microorganisms to generate carbon dioxide gas, ammonia and the like. Further, carbon dioxide gas is directly produced by the respiration of fish and shellfish, and ammonia is directly produced by excretion. Therefore, when breeding aquatic organisms such as fish and shellfish in an aquarium, water quality tends to deteriorate, and ensuring water quality is one of the important factors.

In order to remove or decompose ammonia, which is a substance causing deterioration of water quality due to excrement and feed of fish and shellfish,
In addition to the conventional adsorption removal method, ozone treatment method and biochemical purification method, a method using a recent photocatalyst has been proposed,
It is attracting attention because it is cheap and easy.

For example, in Japanese Patent Application Laid-Open No. Hei 8-228636, an attempt is made to increase the treatment capacity of dissolved ammonia by using an adsorbent in which a photocatalyst is supported on zeolite. (Prior Art 1) JP-A-10-272462 discloses a purification device in which an ultraviolet lamp is arranged in a diatomaceous earth pipe containing titanium oxide and treated water flows through the diatomaceous earth pipe. (Prior Art 2) JP-A-9-290165 further discloses that a photocatalyst, a magnetic substance, and a powder of a fluororesin are mixed, rolled, and cut into small pieces, and the photocatalyst is stirred and mixed with treated water. ,
It is disclosed that by irradiating light, pollutants are oxidized and decomposed, and the photocatalyst is separated and recovered by magnetic separation means. (Prior art 3)

However, the prior art 1
In (2) and (3), when the opaque photocatalyst is supported at a high density, the entire photocatalyst cannot be irradiated with ultraviolet rays, and the portion not activated by the photocatalyst increases, thereby reducing the processing efficiency.

[0005] In addition, when contaminants are adsorbed and deposited on the photocatalyst by the adsorption action of zeolite, ultraviolet rays are blocked by the contaminants, and there is a problem that they are not activated.

Further, since zeolite and diatomaceous earth are inferior in formability and mechanical strength, it is difficult to form a filter having a desired shape.

On the other hand, in the prior art 3, the fluororesin used as the binder of the photocatalyst powder is not decomposed by the photocatalyst, but is mixed into the photocatalyst, the magnetic substance, and the fluororesin to form a strip by rolling and cutting. A processing step is required, which makes the manufacturing complicated and expensive. Further, since the catalyst is magnetically separated after the catalyst is stirred and mixed with the treated water, the apparatus is complicated, expensive, and can be applied only to a large-scale one.

An object of the present invention is to provide a water purifying apparatus which can easily irradiate the entire photocatalyst with ultraviolet rays by improving the filter, and which has high purification efficiency and can be miniaturized, and a water tank apparatus using the same. And

[0009]

According to a first aspect of the present invention, there is provided a water purification apparatus, wherein an inlet for introducing water to be treated, an outlet for discharging treated water, and a treatment tank located between the inlet and the outlet. A purifying apparatus main body comprising: a glass fiber mesh as a base, a photocatalyst substance carried on the base, and a treatment tank in the purifying apparatus main body such that water to be treated flows while contacting the photocatalyst of the mesh. And a UV light irradiating means disposed to irradiate the photocatalytic substance of the filter with ultraviolet light.

In the present invention and each of the following inventions, definitions and technical meanings of terms are as follows unless otherwise specified.

<Regarding the Purification Apparatus Main Body> In the treatment tank of the purification apparatus main body, a photocatalyst is brought into contact with treated water to decompose and purify pollutants in the water to be treated.

The inlet introduces water to be treated into the treatment tank.

[0013] The outlet port leads out the treated water purified by the photocatalyst in the treatment tank.

[0014] The purifying device main body can be installed outside or inside the water tank, or is not limited to the water tank and may be simply interposed in the water channel.

Further, by forming the inner surface of the purifier main body to be ultraviolet-reflective, ultraviolet light that has passed through the filter and has reached the inner surface of the processing tank can be reflected to irradiate the filter again, thereby increasing the processing efficiency. can do.

Further, a pump can be used to circulate the water to be treated through the main body of the treatment apparatus. In this case, the pump may be attached to the main body of the purification apparatus, or the pump may be separated from the main body of the purification apparatus in the middle of the water channel. It may be arranged. Further, the water to be treated can be circulated by using convection due to heat generated by the ultraviolet irradiation means without using a pump.

<Regarding the Filter> The filter of the present invention comprises a base and a photocatalyst carried on the base.

The substrate is made of glass fiber and forms a mesh. The “mesh” is meant to include not only a network-like structure but also a structure having many gaps through which ultraviolet rays can easily pass, such as a structure in which glass fibers are loosely gathered in a wool shape.

When the photocatalyst is irradiated with light, it absorbs the light energy and is excited to generate electrons and holes, which react with oxygen and moisture on the surface of the photocatalyst to activate oxygen and OH.
It is considered that radicals are generated and these are combined with organic substances and decomposed into carbon dioxide gas and water.

The materials constituting the photocatalyst are TiO2, WO
3, LaRhP3, FeTiO3, Fe2O3, CdF
e2O4, SrTiO3, CdSe, GaAs, Ga
P, RuO2, ZnO, CdS, MoS3, LaRhO
3, CdFeO3, Bi2O3, MoS2, In2O
3, CdO, SnO2 and the like. To obtain a photocatalyst,
One or more of these semiconductor materials can be used in combination.

Incidentally, TiO2, WO3, SrTiO2,
Fe2O3, CdS, MoS3, Bi2O3, MoS
2, In2O3, CdO and the like have an absolute value of the redox potential of the equivalent electronic band larger than the redox potential of the conduction band, so that the oxidizing power is larger than the reducing power, and the deodorizing action by the decomposition of the organic compound is prevented. Excellent soiling or antibacterial action.

Among the above substances, TiO2, Fe2O3 and ZnO are superior in terms of raw material cost.

However, among various photocatalytic materials, TiO2
Is most promising because it has a remarkable photocatalytic action, is safe, affordable at an industrially reasonable price, and can be obtained in the required amount.

By the way, TiO2 has crystal structures of anatase type and rutile type, and it is said that the anatase type has better photocatalytic action.

In order for the photocatalyst to be supported on a base made of a mesh made of a fluororesin, the photocatalyst may be bound using, for example, a fluororesin as a binder.

<About UV Irradiation Means> In order to activate the photocatalyst by irradiating the photocatalyst of the filter with ultraviolet light,
Ultraviolet irradiation means is essential, but as an ultraviolet light source,
Either an artificial light source or a natural light source may be used. As an artificial light source, any operation principle may be used as long as the lamp generates light including a wavelength of 400 nm or less.
It is the discharge lamp that emits the light in the above wavelength range most efficiently. The discharge lamp is not limited to an ultraviolet lamp or a germicidal lamp. For example, a discharge lamp whose main light emission is visible light and which partially includes a light emission component having a wavelength of 400 nm or less may be used. However, since light having a wavelength of 400 nm or less is effective for activating the photocatalyst, it is effective to use a discharge lamp that emits light having many components in these wavelength ranges.

Light having a wavelength of 400 nm or less is generally referred to as ultraviolet light.
It is also divided into further harmless wavelength ranges. The former further refers to UV-C at 200 to 280 nm, and
15 nm is referred to as UV-B, and the latter is referred to as UV-A, but various applications are applied to ultraviolet light in any wavelength range.

By the way, a discharge lamp mainly generating ultraviolet rays having a wavelength of 400 nm or less is mainly 254 nm.
In addition to a germicidal lamp that generates ultraviolet light, a fluorescent lamp called a black light that generates ultraviolet light having a main wavelength of 351 nm or 365 nm, mainly 300 to 400 nm
There are also fluorescent lamps that generate ultraviolet light in a wide wavelength range.

On the other hand, as a natural light source, sunlight is most stable and can easily obtain radiation having a wavelength of 400 nm or less.

Next, when a lamp is used as the ultraviolet irradiation means, the lamp can be immersed directly in the water to be treated. If necessary, a configuration may be adopted in which the lamp is housed in a protective tube that transmits ultraviolet light, and then immersed in the water to be treated.

However, the ultraviolet irradiation means may be provided in the air above the water to be treated.

<Regarding the Operation of the Present Invention> In the present invention, the water to be treated introduced into the treatment tank from the inlet of the purification device main body is carried on the mesh of the filter while flowing through the treatment tank. Contacts the photocatalyst. At that time, contaminants such as ammonia or ammonium ions in the water to be treated are decomposed by the photocatalyst, so that the water to be treated is purified. In this case, since the filter has a glass fiber mesh as a base, the photocatalyst located at a position distant from the ultraviolet irradiation means by ultraviolet rays passing between the meshes can be activated. Therefore, purification efficiency can be increased.

Of course, since the mesh is made of fluororesin, it is stable without being decomposed by the photocatalyst and has high mechanical strength. In addition, by using a thermoplastic fluororesin to support the photocatalyst on the substrate forming a mesh made of glass fiber, a filter having excellent adhesion to the substrate and not being decomposed by the photocatalyst is obtained, and thus having excellent durability. be able to.

Further, since the mesh made of glass fiber can be formed in a plate shape, by arranging the filters in multiple stages in the flow direction of the water to be treated, it is possible to maintain the irradiation of the ultraviolet rays well and to reduce the contamination. The probability of contact with the photocatalyst can be increased. Thereby, the processing efficiency can be further increased. Further, by forming the mesh in a plate shape, it is possible to support the lamp simply by inserting it into the lamp or the protective tube of the lamp, so that the filter is easily supported.

Furthermore, not only is the filter disposed so as to intersect at right angles or at an appropriate angle with respect to the flow direction of the water to be treated, but also, if necessary, the surface of the filter is oriented in the direction of flow of the water to be treated. Can also be arranged in parallel. Such an arrangement of the filter enables the arrangement of the filter along the inner surface of the processing tank or the outer surface of the lamp protection tube. Even with such an arrangement, the irradiation of the photocatalyst with ultraviolet light is good, and the contact with the photocatalyst is performed well when the water to be treated flows.

The water purifier according to the second aspect of the present invention is the first aspect of the present invention.
The water purifying apparatus described above is characterized in that the filters each have a plate shape and are arranged in multiple stages separated from each other in the flow direction of the water to be treated.

The plate-shaped filter in the present invention is:
For example, a suitable network structure is formed by braiding glass fibers, or a structure in which glass fibers loosely gathered in a wool shape are pressed into a plate shape is used as a substrate, and a photocatalyst is carried on the substrate. be able to.

In the plate-like filter, since the base material is a mesh, even if the filters are arranged in multiple stages, the filter does not have a large resistance to the flowing water to be treated, but the filters are mutually separated. Because of the separation, the probability of contaminants coming into contact with the photocatalyst is increased, thereby improving the purification capacity.

The water purification apparatus according to the third aspect of the present invention is the first aspect.
Or the water purification device according to item 2, further comprising a pulsating pump that forms a water flow so that the water to be treated flows through the purification device main body.

In the present invention, the term "pulsating pump" means that the pressure of the discharge water formed by the operation of the pump is not constant but changes with time so as to form a pulse.
The operating principle of the pulsation pump is not limited, but a pulsation pump or a reciprocating pump such as a pulsation-prone one is suitable.

In the present invention, since the water flow flowing into the treatment tank is formed by the pulsating pump, the filter oscillates due to the pulsating water flow, and solid matter that is not decomposed adheres to the surface of the photocatalyst. However, it is easy to be shaken off, which is effective in preventing a decrease in activity, and increases the probability of contact of pollutants in the water to be treated with the photocatalyst.

[0042] The water purifying apparatus according to the fourth aspect of the present invention is the first aspect.
3. The water purifying apparatus according to any one of 1 to 3, wherein the ultraviolet irradiating means has a bent shape having a bent shape in which the light-emitting portion is immersed in the water to be treated and the mouth portion is provided so as to protrude out of the water to be treated. An elongate discharge lamp; the purifying apparatus main body has a treatment tank formed to be elongated so as to surround a light emitting portion of the discharge lamp, and an inlet and an outlet are arranged at both ends in the longitudinal direction of the treatment tank. It is characterized by:

In the present invention, "a discharge lamp having a one-sided elongated shape having a bent shape" means that a pair of electrodes at both ends of a discharge path are on the same one side and form one end of the discharge lamp. The middle part of the discharge path forms various bent shapes to form the other end of the discharge lamp. As the bent shape, for example, a U shape, an M shape, a U shape, a meandering shape, and the like are allowed.

In the discharge lamp, the pair of electrodes may be either a hot cathode or a cold cathode. However, since the electrode is a hot cathode, there is an advantage that the amount of generated ultraviolet light can be increased. The hot cathode is a cathode having a thermoelectron emission function, and the mode at the time of starting is divided into a cold cathode start mode and a hot cathode start mode. The cold cathode start mode functions as a cold cathode at the time of starting, but functions as a hot cathode at the time of lighting. The hot cathode start mode functions as a hot cathode from the start. The hot cathode start mode is divided into a direct heating type and an indirectly heating type. In the direct heat type, a metal filament such as tungsten is used as a cathode, and an electric current is directly applied to the cathode to overheat to emit thermoelectrons.
The indirectly heated type emits thermoelectrons by heating a thermoelectron emitting material by incorporating a heater in the cathode. Either mode may be used. However, if a filament for heating is used, it is difficult to reduce the size as described above, so it is difficult to reduce the thickness sufficiently. However, it is effective if the shape is appropriately thin. However, if it is only necessary to use the hot cathode mode at the time of lighting, for example, by using a ceramic electrode material as described in JP-A-6-267404, the discharge lamp can be downsized even with the hot cathode. become. Further, since a discharge lamp provided with a hot cathode emits a large amount of electrons, the discharge lamp can be configured to generate visible light while maintaining a necessary amount of ultraviolet rays. That is, such a discharge lamp can be easily obtained by mixing a phosphor that generates visible light with a phosphor that efficiently generates ultraviolet rays and forming a phosphor layer on the inner surface side of the discharge vessel. By using a discharge lamp that appropriately contains visible light, lighting of the discharge lamp can be easily confirmed. Further, the inside of the water tank can be illuminated using visible light.

Thus, in the present invention, by forming the discharge lamp in the shape of a single cap, the power receiving section is aligned with one end of the discharge lamp and projected out of the water to be treated, thereby facilitating the electrical insulation treatment. In addition, the discharge path length can be increased to increase the lamp voltage, thereby increasing the power consumption relative to the bulk of the discharge lamp, thereby increasing the amount of ultraviolet rays generated.

Further, by forming the treatment tank of the purifier body to be elongated so as to surround the light emitting portion of the discharge lamp, the entire photocatalyst of the filter can be easily irradiated with ultraviolet rays. For example, the filter can be disposed in a tubular shape along the inner surface of the processing tank. In addition, it is possible to arrange concentrically shaped filters having a discharge lamp insertion hole at the center around the light emitting portion of the discharge lamp, and to dispose a plurality of such filters in a multi-tiered manner apart from each other.

According to a fifth aspect of the present invention, there is provided the water purifying apparatus according to any one of the first to fourth aspects, wherein the water purifying apparatus is arranged to purify water in the water tank main body as water to be treated. ; Characterized by having;

The water purifying device is disposed inside the water tank body, integrally disposed outside the water tank body, and connected to the water tank body only through a water circulation path. Any of the modes provided separately from the main body may be used. In the case where the water purification device is disposed inside the water tank main body, the water purification device may be immersed in the water of the water tank, may be floated on the surface of the water, or may be further above the water surface in the water tank. It may be arranged in.

A plurality of water purifiers can be connected to a water tank in parallel or in series.

Further, if the purifying capacity of the water purifying apparatus has a margin, it is also allowed to purify water in a plurality of water tanks at the same time.

According to a sixth aspect of the present invention, in the water tank apparatus according to the fifth aspect, the water purifying device is arranged such that the inlet is relatively lower and the outlet is relatively higher. It is characterized by being configured to operate in a state of being immersed in water.

In the present invention, the water to be treated filled in the treatment tank contacts the photocatalyst of the filter to decompose contaminants, and the water to be treated is heated by the heat generated by the discharge lamp. When the specific gravity decreases due to the expansion, the convection of the water to be treated is generated in the treatment tank from the bottom to the top. For this reason, the treated water that has risen in the treatment tank is discharged from the outlet into the water tank. At the same time, the water to be treated is introduced from the inlet and enters the treatment tank, that is, the water in the tank is circulated through the water purification device, and comes into contact with the photocatalyst of the filter to remove contaminants. It is decomposed and purified. Since the above operation is continuously performed during the lighting of the discharge lamp, a driving means such as a pump for forcibly supplying the water to be treated to the treatment tank becomes unnecessary.

However, if the water temperature in the water tank rises due to convection caused by the heat generated by the discharge lamp, which is inconvenient, an appropriate cooling means can be used together.

[0054]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a sectional view showing a first embodiment of the water purification apparatus of the present invention.

FIG. 2 is an enlarged cross-sectional view of the main part.

FIG. 3 is an enlarged front view of a main part showing the filter.

In each figure, 1 is a purifier main body, 2 is a filter, and 3 is an ultraviolet irradiation means.

(Regarding Purification Device Main Body 1) The purification device main body 1 includes an inlet 1a, an outlet 1b, and a processing tank 1c. The inlet 1a is provided at one end of the processing tank 1c.

The outlet 1b is provided at the other end of the processing tank 1c.

The processing tank 1c has a cylindrical body 1c1,
It consists of a pair of end plates 1c2, 1c2 and an ultraviolet-transparent protective tube 1c3. The pair of end plates 1c2, 1c2 close both ends of the body 1c1 in a watertight manner. Further, a circular hole is formed in the center of the end plate, and the ultraviolet-permeable protective tube 1c3 is watertightly mounted between the holes of each end plate 1c2. With the above structure, the processing tank 1c is of a cylindrical, closed type configuration.

The inlet 1a is attached to one end plate 1c2 in a watertight manner, and the outlet 1b is attached to the other end plate 1c2.

The inner surface of the processing tank 1c is formed to reflect ultraviolet rays.

(Regarding Filter 2) As shown in FIG. 3, the filter 2 includes a base 2a and a photocatalyst 2b.

The base 2a is made of a glass fiber mesh. The mesh is formed by braiding glass fibers into a mesh structure.

The photocatalyst 2b is mainly composed of titanium oxide, and is supported on a mesh of the base 2a by a binder mainly composed of a thermoplastic fluororesin.

As shown in detail in FIG. 2, the filter 2 is formed in the shape of a mountain umbrella having an insertion port 2c for an ultraviolet-permeable protective tube 1c3 at the center. By being inserted through the permeable protection tube 1c3, it is disposed in the processing tank 1c.

In order to easily form the filter 2 into the shape of an umbrella, the following may be performed.

That is, a filter material previously loaded with a photocatalyst is punched into a disk shape.

Next, the filter 2 is formed by forming light transmission smaller than the diameter of the ultraviolet light transmitting tube at the center of the disk and making radially, preferably three or more cuts around the light transmission.

Finally, when the filter 2 is press-fitted into the ultraviolet ray transmitting tube 1c3, the filter 2 is locked to the ultraviolet ray transmitting tube 1c3 while being deformed into a mountain umbrella shape.

(Ultraviolet Irradiating Means 3) The ultraviolet irradiating means 3 is composed of a straight tube-type germicidal lamp, and is disposed in the ultraviolet permeable tube 1c3. Then, the ultraviolet light generated by the lighting is transmitted through the ultraviolet light transmitting tube 1c3 to irradiate the filter 2.

(Operation) When the ultraviolet irradiation means 3 is turned on and water in the water tank, ie, water to be treated, is introduced from the inlet 1a of the purification device main body 1 via a pipe and a pump (both not shown), The water to be treated flows inside the treatment tank 1c while passing between the meshes of the plurality of filters 2 arranged in multiple stages. Since the photocatalyst 2b carried on the mesh which is the base 2a of the filter 2 is activated by being irradiated with ultraviolet rays by the ultraviolet irradiation means 3, it is oxidized when contaminants come into contact with the photocatalyst in the flow of the water to be treated. The water to be treated is purified.

In the photocatalyst, since the filter 2 is in the shape of a mountain umbrella, the ultraviolet light is irradiated by the ultraviolet irradiation means 3 over substantially the entire surface of each filter. FIG. 4 shows a second embodiment of the water purification apparatus of the present invention. FIG.

In the figure, the same parts as those in FIG. 1 are denoted by the same reference numerals, and description thereof will be omitted.

The present embodiment is different in that a pulsation pump 4 is provided.

That is, the inlet 1a of the purifier main body 1 is connected to the outlet 4a of the pulsating pump 4 composed of a vortex pump, and the water inlet 4b is connected to a water tank (not shown). Therefore, the outlet 1b of the purification device main body 1 is connected to the water tank so as to return the purified treated water to the water tank.

Thus, in the present embodiment, the water to be treated in the water tank is fed into the processing apparatus 1 via the inlet 1a by the pulsating pump 4, so that the filter is driven by the pulsation of the discharge water. 2 vibrates. Since the filter 2 vibrates, the solid matter adhering to the photocatalyst is shaken off, preventing a decrease in the photocatalytic action and improving the probability of contact of pollutants with the photocatalyst.

FIG. 5 is a sectional view showing a third embodiment of the water purification apparatus of the present invention.

In the figure, the same parts as those in FIG. 1 are denoted by the same reference numerals, and description thereof will be omitted.

In this embodiment, the processing tank 1c, the filter 2, and the ultraviolet irradiation means 3 are different.

That is, the processing tank 1c has an open configuration in which the upper surface is open.

The filter 2 has a structure in which a photocatalyst is supported as a binder by a thermoplastic fluororesin on a mesh base made of glass fiber wool having a relatively coarse density, and is stored in a processing tank 1c. I have.

The ultraviolet irradiation means 3 is the same as that of the first embodiment in that it is constituted by a straight tube type germicidal lamp. However, a reflection plate serving also as a lid of the treatment tank 1c is located above the water to be treated. 3a.

FIG. 6 is a sectional view showing a fourth embodiment of the water purification apparatus of the present invention.

In the figure, the same parts as those in FIG. 1 are denoted by the same reference numerals, and description thereof will be omitted.

The present embodiment is different in that the present embodiment is configured to be used by being immersed in the water to be treated.

That is, the purifying apparatus main body 1 has a cylindrical shape, an inlet 1a is formed on the lower end face, and an outlet 1b is formed on the side face near the multi-end portion. And the introduction mouth 1a
The mechanical filter 5 is disposed inside the processing tank 1c so that relatively large solid matter does not enter the inside of the processing tank 1c.

The filter 2 is made of a fluororesin base 2a having a mesh structure as shown in FIG. 3 and a photocatalyst 2b supported thereon, and is bent into a cylindrical shape against the elasticity of the base to form an inner surface of the processing tank 1c. It is supported by being in contact with.

The ultraviolet irradiating means 3 is formed of a sterilizing lamp bent in a U-shape, and is supported at the base end on the base side by a packing 6 along the longitudinal direction substantially at the center of the processing tank 1c.

The packing 6 is mounted above the outlet 1b on the upper end side of the processing tank 1c to support the ultraviolet irradiation means 3, and also, inside the processing tank 1c, the processing tank main part 1c4.
And the electrical component 1c5 in a watertight manner.

The light emitting part of the filter 2 and the ultraviolet ray generating means 3 is housed in the processing tank main part 1c4.

A high-frequency lighting device 7 is provided at the base end of the ultraviolet irradiation means 3.

The high-frequency lighting device 7 is supplied with power from a power supply via a power cord 8. The power cord 8 is led out of the electrical component 1c5 through a bush 9 insulated and waterproof.

Since the electric part 1c5 is closed off by the packing 6, water does not enter from inside the water tank, and electric parts including the base end of the base of the ultraviolet irradiation means 3 and the high-frequency lighting device 7 are housed. Have been.

Since the purifying apparatus body 1 is used in a state where the outlet 1b is immersed in the water tank,
Water in the water tank enters from the inlet 1a and the outlet 1b and enters the processing tank 1c.

At first, when the ultraviolet irradiation means 3 is not turned on or immediately after the lighting, the water flow is not generated in the processing tank main part 1c4.

Next, the ultraviolet irradiation means 3 is turned on to irradiate the filter 2 with ultraviolet light, and when the temperature rises, the water in the treatment tank is heated and rises in the treatment tank 1c as the temperature rises. Convection is generated and discharged from the outlet 1b into the water tank. At the same time, relatively cool water enters from the outlet 1a through the mechanical filter 5. In the process of moving water up the inside of the treatment tank 1c, contaminants in the water to be treated come into contact with the photocatalyst of the filter 2 to be decomposed and purified. That is, in the present embodiment, since the water to be treated is circulated by using the convection generated due to the temperature rise during the treatment, there is no need to provide a special water flow generating means such as a pump, and the structure is simplified. It is convenient for planning.

FIG. 7 is a sectional view showing a fifth embodiment of the water purification apparatus of the present invention.

In the figure, the same parts as those in FIG.

This embodiment is different from the first embodiment in that a means for attaching to a water tank is provided.

That is, a locking arm 11 for locking to the upper edge of the water tank 10 and a posture correcting projection 12 are formed on the back surface of the purification device main body 1. The upper edge of the water tank 10 has a metal frame 1
0a is mounted.

Then, the metal frame 10a is attached to the upper edge of the water tank 10.
Even if is attached, the locking arm 11 is formed so as to be able to be locked to the metal frame 10a, and the projection 12 for posture correction comes into contact with the inner surface of the glass plate portion of the water tank 10, so that 1 is attached to a predetermined position in an upright state.

FIG. 8 is a sectional view showing a sixth embodiment of the water purification apparatus of the present invention.

In the figure, the same parts as those in FIG. 6 are denoted by the same reference numerals, and the description is omitted.

In this embodiment, the water flow generating means 13 using air bubbles is used.
In that it has

That is, the air pump 13 is installed in the electrical equipment section 1c5 divided at the upper end of the processing tank 1c of the purification device main body 1.
a, and the compressed air from the air pump 13a is
The water flow generating means 13 is configured to blow out from the tip of an air tube 13b extending to near the lower end of the treatment tank main body 1c3.

When the air is blown out from the tip of the air tube 13b, the blown-out air becomes a large number of air bubbles, moves above the processing tank 1c, and blows out from the outlet 1b into the water tank. Along with this, an upward water flow is generated in the processing tank 1c, and a part of the oxygen in the air forming the bubbles dissolves in the water to be treated to increase the dissolved oxygen concentration.

Thus, a water flow is generated in the processing tank 1c, so that the water in the water tank is circulated for purification.

[0110] The supply of oxygen necessary for the fish and shellfish is performed by blowing out the air bubbles.

Further, even when solids that are not decomposed adhere to the surface of the photocatalyst of the filter 2 when the air bubbles move upward in the processing tank 1c, they are easily shaken off by alternate contact of the air bubbles with water.

Note that ultraviolet light is hardly attenuated by air bubbles, so that there is no adverse effect on photocatalysis.

FIG. 9 is a sectional view showing a water purification apparatus according to a seventh embodiment of the present invention.

In the figure, the same parts as those in FIG.

In the present embodiment, the filter 2 is different.

That is, the filter 2 is formed in a spiral shape, and is mounted on the outer surface of the ultraviolet ray transmitting tube 14 which surrounds the ultraviolet ray irradiating means 3 in a watertight manner. Of course, the filter 2 has a photocatalyst carried on a mesh made of glass fiber constituting the base.

The ultraviolet transmitting tube 14 has a cylindrical shape with a bottom, and is held in the processing tank 1c by supporting the open end thereof in a packing 6 in a watertight manner.

Thus, in the present embodiment, when the discharge lamp which is the ultraviolet irradiation means 3 is turned on, the temperature of the water to be treated rises due to the rise of the temperature of the water to be treated. And a flow along the spiral surface of the filter 2 occurs.

By setting the mesh of the base supporting the photocatalyst to be relatively small, the proportion of the flow of the water to be treated moving from the inlet 1a to the outlet 1b while drawing a spiral along the spiral surface of the filter 2 Increase.

On the contrary, by setting the mesh of the base relatively large, the ratio of the flow passing between the meshes increases.

In any of the above embodiments, sufficient contact of the water to be treated with the photocatalyst is obtained, and the efficiency of the purification treatment is increased.

FIG. 10 is a sectional view showing an eighth embodiment of the water purification apparatus of the present invention.

In the figure, the same portions as those in FIG. 8 are denoted by the same reference numerals, and description thereof will be omitted.

The present embodiment is different in that the present embodiment is configured to float in a water tank.

That is, by increasing the diameter of the electrical component 1c5 of the processing tank 1c, the volume of the electrical component 1c5 is increased to also serve as a float.

Therefore, when the water purifying apparatus of the present embodiment is put into a water tank, the float is taken out of the water, and the treatment tank main part 1c4 hangs down in the water and floats in the water tank.

When the processing tank main part 1c4 is light, a weight may be attached to the lower part.

Thus, in the present embodiment, a highly adaptable water purification apparatus can be obtained regardless of the size and structure of the water tank.

FIG. 11 is a sectional view showing a ninth embodiment of the water purification apparatus of the present invention.

In the figure, the same parts as those in FIG. 10 are denoted by the same reference numerals, and description thereof will be omitted.

The present embodiment is different in that the present embodiment is configured to float in a water tank in a horizontal state.

That is, the inside of the prismatic processing tank 1c is vertically divided into two parts along the longitudinal direction by a watertight partition wall 1d, and the lower half is used as the processing tank main part 1c4, and the upper half also serves as a float. This is the electrical component 1c5. An inlet 1a is provided downward at one end of the processing tank main body 1c4, and an outlet 1b is provided downward at the other end.

The ultraviolet generating means 3 has a U-shape as a whole, but is bent further at a right angle in the vicinity of the base end on the base side, and has an inverted L-shape in a cross section shown in the drawing along the longitudinal direction. I am doing.

The water flow generating means 13 includes a motor 13c and a propeller 13d driven by the motor 13c, and the propeller 13d is disposed at a position close to the inlet 1a. Reference numeral 14 denotes a waterproof bush through which a propeller shaft is rotatably inserted.

The filter 2 is disposed along the inner surface of the processing tank main body 1c4, which has a rectangular cross section and is ultraviolet-reflective.

Thus, in this embodiment, the processing unit main part 1c4 is submerged in a horizontal state near the water surface in the water tank with the electrical equipment part 1c5 as a float, and the water flow generated by the rotation of the propeller 13d flows from the inlet 1a. The water to be treated is introduced into the treatment tank main part 1c4, purified by the photocatalyst of the filter 2, and then returned from the outlet 1b into the water tank.

In this embodiment, the water purification device purifies the water while floating near the water surface in the water tank in a horizontal state, so that the water purification device can be used without any problem even when the water depth in the water tank is shallow. .

FIG. 12 is a conceptual front view showing a first embodiment of the water tank apparatus of the present invention.

In the figure, 21 is a water tank, 22 is a water purification device, 23 is a water absorption hose, 24 is a mechanical filter,
5 is a spouting hose.

[0140] The water purification device 22 has the same structure as that shown in FIG.

The water absorption hose 23 has a distal end inserted into the water tank 21 and a proximal end connected to the water suction port 4b of the pulsating pump 4 composed of a vortex pump. Water is supplied to the device 22.

[0142] The mechanical filter 24 is
3, which filters relatively large solids from entering the water purification device 22.

The water discharge hose 25 has a distal end inserted into the water tank 21 and a proximal end connected to the outlet 1b of the water purifier 22 to return purified treated water into the water tank 21.

FIG. 13 is a conceptual front view showing a second embodiment of the water tank apparatus of the present invention.

In the figure, the same parts as those in FIG. 12 are denoted by the same reference numerals, and description thereof will be omitted.

The present embodiment is different in that the water purification device 22 has a structure basically similar to that shown in FIG.

That is, the water purification device 22 is immersed in the water tank 21 in an upright state and used for use. In order to fix the immersion depth and posture with respect to the water tank 21, a suction cup 22 a is attached to the back surface, and is configured to be adsorbed on the inner wall surface of the water tank 21.

[0148]

According to each of the first to fourth aspects of the present invention, a photocatalyst is supported on a substrate using a glass fiber mesh as a substrate in a processing tank of a purification device main body having an inlet, an outlet, and a processing tank. By disposing a filter consisting of, the water to be treated flows through the processing tank while contacting the photocatalyst of the mesh of the filter, and by disposing ultraviolet irradiation means for irradiating the photocatalyst with ultraviolet light, Ultraviolet rays pass between the meshes to activate the photocatalyst located far from the ultraviolet irradiation means, and it becomes easy to activate the entire photocatalyst,
The purification efficiency is increased and the size of the device can be reduced, and the filter is made of a glass fiber substrate carrying a photocatalyst. Can also provide a water purification device that does not adversely affect water and has excellent durability against the water to be treated.

According to the second aspect of the present invention, in addition, the filter has a plate-like shape and is arranged in multiple stages separated from each other in the flow direction of the water to be treated, so that the entire photocatalyst can be made to emit ultraviolet light. Provide a water purification device that is easy to be activated by irradiation and that increases the probability that pollutants in the water to be treated come into contact with the photocatalyst and has a high purification ability, but the filter does not have a large resistance to the flow of the water to be treated. can do.

According to the third aspect of the present invention, in addition, the water to be treated is formed by the pulsating pump so that the water to be treated flows through the inside of the purification device main body. A water purification device that can be easily shaken off even if solid matter that does not decompose on the surface of the photocatalyst fluctuates and prevents the photocatalytic activity from decreasing, and increases the probability of contact of contaminants in the water to be treated with the photocatalyst. Can be provided.

According to the fourth aspect of the present invention, in addition, by using a one-sided discharge lamp as the means for irradiating ultraviolet rays, even if the discharge lamp is immersed in the water to be treated, the electric insulation treatment is facilitated, and at the same time, the discharge is performed. It is possible to provide a water purification device in which the path length is increased and the ultraviolet output is increased.

According to the fifth aspect of the present invention, it is possible to provide a water tank apparatus having the effects of the first to fourth aspects.

According to the sixth aspect of the present invention, it is possible to provide a water tank apparatus that uses the water purification device in a state of being immersed in the water tank.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a first embodiment of a water purification apparatus of the present invention.

FIG. 2 is an enlarged sectional view of a main part of the same.

FIG. 3 is an enlarged front view of a main part showing the same filter.

FIG. 4 is a partially sectional front view showing a second embodiment of the water purification apparatus of the present invention.

FIG. 5 is a sectional view showing a third embodiment of the water purification apparatus of the present invention.

FIG. 6 is a cross-sectional view showing a fourth embodiment of the water purification device of the present invention.

FIG. 7 is a sectional view showing a fifth embodiment of the water purification apparatus of the present invention.

FIG. 8 is a sectional view showing a sixth embodiment of the water purification device of the present invention.

FIG. 9 is a sectional view showing a seventh embodiment of the water purification apparatus of the present invention.

FIG. 10 is a sectional view showing an eighth embodiment of the water purification apparatus of the present invention.

FIG. 11 is a sectional view showing a ninth embodiment of the water purification apparatus of the present invention.

FIG. 12 is a conceptual front view showing a first embodiment of the water tank apparatus of the present invention.

FIG. 13 is a conceptual front view showing a second embodiment of the water tank apparatus of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Purification apparatus main body 1a ... Inlet 1b ... Outlet 1c ... Treatment tank 1c1 ... Body 1c2 ... End plate 1c3 ... Ultraviolet transmitting tube 2 ... Filter 3 ... Ultraviolet irradiation means 4 ... Pulsating pump 4a ... Water outlet 4b ... Water absorption mouth

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2B104 CA03 EA01 ED09 ED36 EE09 EF09 EF12 4D037 AA09 AB02 AB03 BA18 CA02 4D050 AA08 AB06 AB35 BB20 BC06 BC09 CA07 4G069 AA03 BA48A CA05

Claims (6)

[Claims] 1. A purifying apparatus main body comprising an inlet for introducing water to be treated, an outlet for discharging treated water, and a treatment tank located between the inlet and the outlet; and a glass fiber mesh as a substrate. A filter disposed in a treatment tank of the main body of the purification device so that water to be treated flows while contacting the photocatalyst of the mesh; and irradiating ultraviolet rays to the photocatalytic substance of the filter. Water irradiating means arranged to perform water purification. 2. The water purifying apparatus according to claim 1, wherein the filters have a plate shape and are arranged in multiple stages separated from each other in a flow direction of the water to be treated. 3. The water purifier according to claim 1, further comprising a pulsating pump for forming a water flow so that the water to be treated flows through the purifier main body. 4. The ultraviolet irradiation means is a one-piece elongated discharge lamp having a bent shape in which a light emitting part is immersed in the water to be treated and a base part is disposed so as to protrude out of the water to be treated; And a processing tank formed to be elongated to surround the light emitting portion of the discharge lamp, and an inlet and an outlet are arranged at both ends in the longitudinal direction of the processing tank. 4. The water purification device according to any one of items 1 to 3. 5. A water tank main body; and the water purifying apparatus according to claim 1, which is arranged to purify water in the water tank main body as water to be treated. Characteristic aquarium device. 6. The water purifier according to claim 1, wherein the inlet is relatively lower,
The aquarium apparatus according to claim 5, wherein the aquarium apparatus is configured to operate in a state of being immersed in water in the aquarium body such that the outlet is relatively high.