KR20060106948A - Water purifier with blade for rotating photocatalyst - Google Patents

Abstract

The present invention is made of a photocatalyst material and rotatable photocatalyst 30; A shaft 20 supporting a rotation axis of the photocatalyst; A support shaft 25a for supporting the shaft; A blade 10 fixed to the shaft to impart rotational force to the photocatalyst according to the flow of the fluid; A cylindrical ultraviolet transmission tube (40) for accommodating the blade and the shaft and allowing fluid to pass from one side to the other side; A body 60 accommodating the ultraviolet light transmitting tube and having an ultraviolet generating means 50 for irradiating ultraviolet rays toward the ultraviolet light transmitting tube inside; And a frame 62 coupled to one side and the other side of the body to allow the fluid to pass therethrough, and a purification device having a blade for rotating the photocatalyst.

According to the purifying apparatus according to the present invention, the ultraviolet light emitted from the light source is in contact with a large amount of waste water or exhaust gas for a sufficient time per unit time to undergo a photocatalytic reaction, thereby effectively purifying waste water or exhaust gas, and a separate power source. By rotating the purifying photocatalyst through the blade without supply, it is possible to provide a purification field having a photocatalyst rotating blade which has simply enhanced the fluid purifying effect.

Description

Purifier with photocatalyst rotating blade {WATER PURIFIER WITH BLADE FOR ROTATING PHOTOCATALYST}

1 is an exploded perspective view of a purifier having a photocatalyst rotating blade according to a first embodiment of the present invention.

2 is a perspective view of a combination of a purifier having a photocatalyst rotating blade according to a first embodiment of the present invention.

3 is a cross-sectional view of a purifier having a photocatalyst rotating blade according to a first embodiment of the present invention.

4 is a longitudinal cross-sectional view of a purifier having a photocatalyst rotating blade according to a first embodiment of the present invention.

5 is a perspective view showing a photocatalyst of the purification apparatus according to the embodiment of the present invention.

6 is a cross-sectional view showing a purification apparatus having a photocatalyst rotating blade according to a second embodiment of the present invention.

FIG. 7 is a longitudinal sectional view seen from the line II-II of FIG. 6. FIG.

8 is a cross-sectional view of a purification apparatus including a blade for rotating a photocatalyst according to a third embodiment of the present invention.

FIG. 9 is a longitudinal sectional view seen from lines III-III and IV-IV of FIG. 8.

<Description of Signs of Major Parts of Drawings>

10: blade 20: shaft

25: flange 25a: support shaft

30: photocatalyst 30a: cleaning brush

31: housing for photocatalyst 31a: photocatalyst carrier

32, 33: photocatalyst blade 33a: cleaning brush

40: UV transmission tube 40a: support piece

50: ultraviolet generation means 60: body

62: frame 64: piping

100: Purifier with a photocatalyst rotating blade

The present invention relates to a purifier having a photocatalyst rotating blade capable of effectively purifying a fluid using a photocatalyst, and more particularly, to a fluid and an activated photocatalyst by rotating the photocatalyst by a rotating blade according to the flow of the fluid. The present invention relates to a purification device having a blade for rotating a photocatalyst which further enhances the ability to purify waste water and gases by increasing the contact area per unit time.

A photocatalyst is a substance that promotes a catalytic reaction by light such as ultraviolet (UV) light that is irradiated, and effectively removes contaminants by oxidizing / decomposing various contaminants to be contacted. As the photocatalyst material, various materials including TiO ₂ , ZnO, and CdS may be used. Photocatalyst can eliminate secondary pollution by completely oxidizing / decomposing pollutants, treat pollutants in liquid and gaseous phase, process at room temperature / atmospheric pressure and low temperature, Biochemical Oxygen Demand (BOD), COD (Chemical Oxygen Demand), color, SS (Settleable Solids), odor removal ability is also excellent, heavy metals, hard to decompose organic substances, excellent sterilization effect of various microorganisms. The sterilizer using photocatalyst has the advantage that the installation area is narrower than the processing quantity, and its range of use is expanding in various industrial fields and real life fields.

Korean Patent Laid-Open Publication No. 1998-036723 discloses an example of a water purifier using a photocatalyst. The water purifier disclosed in the above publication is provided with an inlet pipe through which water is introduced at one end, and a drain pipe for discharging the purified water at the other end thereof, and a space for removing impurities from the water introduced from the inlet pipe. Reaction vessel provided; A photocatalyst formed by coating a photocatalytic material on a support and mounted inside the reaction vessel to receive impurities for photocatalytic activity from a light source and to remove impurities contained in water in the reaction vessel by photochemical reaction; And a light source provided outside the reaction vessel and configured to supply energy for photocatalytic activity of the photocatalyst.

However, the conventional photocatalyst water purification device has a problem in that the sterilization purification effect is low because a large amount of fluid flows without being sufficiently irradiated with ultraviolet rays.

The present invention has been devised to solve the above-described prior art and various problems associated therewith, and effectively cleans waste water or exhaust gas by allowing ultraviolet rays emitted from a light source to contact a large amount of fluid with a sufficient time per unit time to undergo a photocatalytic reaction effect. It is to provide a purification device having a photocatalyst rotating blade.

It is another object of the present invention to provide a purification plant having a photocatalyst rotating blade which simply improves the fluid purification effect by rotating the purification photocatalyst through the blade without additional power supply.

In order to achieve the above object, the purification device having a blade for rotating the photocatalyst according to the present invention,

A photocatalyst portion made of a photocatalyst material and rotatable;

A shaft supporting a rotation axis of the photocatalyst;

A support shaft supporting the shaft;

A blade fixed to the shanghai shaft to impart rotational force to the photocatalyst according to the flow of the fluid;

A cylindrical ultraviolet transmission tube accommodating the blade and the shaft and allowing fluid to pass from one side to the other side;

A body accommodating the ultraviolet ray transmitting tube and having ultraviolet ray generating means for irradiating ultraviolet rays toward the ultraviolet ray transmitting tube inside; And

Is coupled to one side and the other side of the body characterized in that it comprises a frame for passing the fluid.

And, according to another feature of the invention, the rotatable photocatalyst portion is characterized in that it comprises a housing through which the fluid can pass, and a photocatalyst carrier filled in the housing.

In addition, according to another feature of the present invention, the housing is characterized in that it comprises a cleaning brush for cleaning the ultraviolet transmission tube by the friction caused by the rotation of the photocatalyst.

In addition, according to another feature of the present invention, the UV generating means is characterized in that the UV LED (UV-LED).

And, according to another feature of the invention, the rotatable photocatalyst is fixed to the shaft is characterized in that it comprises a plurality of photocatalyst blade made of a photocatalyst carrier rotated according to the flow of the fluid.

In addition, according to another feature of the present invention, the shaft is characterized in that it comprises a cleaning brush for cleaning the ultraviolet transmission tube by the friction caused by the rotation of the photocatalyst between the plurality of photocatalyst blades.

In addition, according to another feature of the present invention, the ultraviolet transmission tube is characterized in that consisting of a quartz tube or Teflon tube.

Hereinafter, a purification apparatus having a photocatalyst rotating blade according to the present invention will be described in detail with reference to the accompanying drawings. The objects and constructional features of the present invention will become more apparent from the accompanying drawings and the description of the detailed and preferred embodiments of the present invention described below. In addition, it is to be noted that the same to similar parts in the drawings are described with the same to similar reference numerals for convenience of description and understanding.

1 is an exploded perspective view of a purification apparatus having a photocatalyst rotating blade according to an embodiment of the present invention, FIG. 2 is a combined perspective view thereof, FIG. 3 is a cross sectional view thereof, and FIG. 4 is taken along line II of FIG. 2. This is a longitudinal cross-sectional view.

As shown in Figure 1, the purifying apparatus 100 according to the present invention is to protect the blades for rotating the photocatalyst 10, the shaft 20 which is the rotation axis of the blade, the photocatalyst portion 30 coupled to the shaft, ultraviolet rays generating means from the fluid Ultraviolet ray transmitting tube 40, ultraviolet generating means 50, the body 60 and the frame 62 for.

The photocatalyst 30 is made of a photocatalyst material and has a rotatable structure attached to the shaft.

A photocatalyst is a substance that, when it receives light without causing itself to change, causes a catalyzed reaction to promote a chemical reaction of another substance. Among photocatalysts, titanium dioxide (TiO ₂ ) is most frequently used because titanium dioxide has good acid resistance and alkali resistance and is harmless to the human body. It is an eco-friendly material that changes various pollutants into harmless materials.

When the photocatalyst receives light of 180nm ~ 370nm wavelength, electrons and holes are formed to produce hydroxy radical (-OH) and super oxide with strong oxidation power, and hydroxy radical (-OH) and super oxide oxidize and decompose organic compounds. They are decomposed into water and carbon dioxide, and bacteria are also organic compounds, which are oxidatively decomposed and sterilized by the strong oxidation of the photocatalyst. Use of such strong oxidation reaction can produce effects such as sterilization, antibacterial, deodorization, organic matter decomposition.

In particular, when UV-LED is combined with UV-LEDs, photocatalysts oxidize and decompose polluted organic compounds in the air into harmless water and carbon dioxide, which means dioxin treatment systems, SOx treatment systems, and atmospheric purification systems. May be employed.

As indicated by arrows in FIG. 2, waste water or contaminated gas is introduced from one side of the purification apparatus 100 to be purified and then discharged to the other side of the purification apparatus 100.

As can be seen in the cross-sectional view of FIG. 3, the photocatalyst 30 is rotatable and attached to the shaft 20, and the rotating photocatalyst 30 receives ultraviolet rays to generate a photocatalytic phenomenon to purify the fluid passing therethrough.

The shaft 20 is a support piece for supporting the rotation axis of the photocatalyst 30, and rotates at the center of the rotation axis of the photocatalyst 30. As can be seen in Figure 4, the shaft 20 is rotated with the blade when the blade 10 rotates in accordance with the flow of the fluid, accordingly the photocatalyst 30 is also rotated.

As shown in FIG. 3, the support shaft 25a supports the shaft 20. The support shaft 25a has a flange 25 for rotatably fixing both ends of the shaft 20.

The blade 10 is fixedly coupled to the shaft 20 and imparts rotational force to the photocatalyst 30 according to the flow of the fluid. Since the blade 10 rotates according to the flow of the fluid, the purifier according to the present invention does not need a separate power source and a transmission device for rotating the photocatalyst 30.

The ultraviolet transmission tube 40 is formed in a cylindrical shape that accommodates the blade 10 and the shaft 20, and passes the fluid from one side to the other side. The fluid flows into the cylindrical ultraviolet ray transmitting tube 40 and receives ultraviolet rays from the outside and transmits them. The ultraviolet transmission tube 40 may be supported by being coupled to the body 60 through the support piece 40a or coupled to the support shaft 25a. The ultraviolet transmission tube 40 may be made of a quartz tube through which ultraviolet rays can be transmitted. However, when the purification apparatus of the present invention is used for exhaust gas purification for automobiles, it is preferable to configure the ultraviolet transmission tube with a Teflon tube that is more resistant to shaking. Like quartz tubes, Teflon tubes have the advantages of being transparent to ultraviolet rays, being resistant to high temperatures, being more advantageous for miniaturization, being resistant to vibration and shock, and not attaching contaminants well.

The body 60 accommodates the ultraviolet light transmitting tube 40, and has an ultraviolet generating means 50 inside to irradiate the ultraviolet light toward the ultraviolet light transmitting tube 40. And, the body 60 is coupled to the frame 62 which is coupled to one side and the other side to pass the fluid. Frame 62 is coupled with tubing 64 for inlet or outlet of fluid, respectively.

5 is a perspective view showing the photocatalyst 30 of the purification apparatus according to an embodiment of the present invention. As can be seen in FIG. 5, the rotatable photocatalyst portion 30 may include a housing 31 through which fluid can pass and a photocatalyst carrier 31a filled in the housing. The housing 31 is preferably made of stainless steel or reinforced plastic material, and as shown in FIG. 5, the fluid can be smoothly passed by forming a mesh shape. Since the bead-shaped photocatalyst carrier 31a is filled in the housing 31, the photocatalyst by ultraviolet irradiation can be made.

Therefore, the purification apparatus according to the present invention can greatly enhance the purification efficiency because the contact area between the photocatalyst carrier 31a and the fluid (waste water or gas) per unit time is greatly increased.

On the other hand, as shown in Figure 5, the housing 30 may be provided with a cleaning brush (30a) for cleaning the ultraviolet transmission tube by friction with the ultraviolet transmission tube according to the rotation of the photocatalyst 30. As shown in FIG. 4, when the shaft 20 and the photocatalyst 30 are rotated, the cleaning brush 30a attached to the end side of the housing 30 is rubbed with the ultraviolet transmitting tube 40, thereby transmitting the ultraviolet transmitting tube 40. It is possible to prevent contaminants from sticking to them.

On the other hand, the ultraviolet generating means 50 attached to the body 60 may be any kind of light source that emits ultraviolet rays, but it reduces the volume of the product and generates ultraviolet rays at low voltage, and the long life and maintenance cost of the life. In order to reduce the cost, it is preferable to adopt UV LED (UV-LED). In particular, the general UV lamp has a long length and a large volume and high temperature phenomenon caused by self-heating, UV-LED (UV-LED) is a small volume without generating heat can be an efficient design required for a narrow space.

FIG. 6 is a cross-sectional view showing a purification apparatus having a photocatalyst rotating blade according to a second embodiment of the present invention, and FIG. 7 is a longitudinal cross-sectional view taken along line II-II of FIG. 6. Since the perspective view of the second embodiment is the same as that of FIG. 2, the overlapping perspective view is omitted.

The purification apparatus of the second embodiment differs from the first embodiment in that the rotatable photocatalyst portion 30 is fixed to the shaft 20 and rotated in accordance with the flow of fluid, and comprises a plurality of photocatalyst blades 32 made of a photocatalyst carrier. Is to include.

As can be seen in FIG. 6, a plurality of photocatalyst blades 32 are attached to the shaft 20 which is rotated by the rotational force by the blade 10. The photocatalyst blade 32 is formed by coating a photocatalyst on plastic or stainless steel. The photocatalyst blade 32 has a shape similar to that of the blade 10 and causes rotational force by the reaction caused by the passage of the fluid. Therefore, the photocatalyst blade rotates in accordance with the flow of the fluid, and receives the ultraviolet rays emitted from the ultraviolet generating means to cause the photocatalyst phenomenon. Therefore, the purification apparatus according to the present invention can greatly enhance the purification efficiency since the contact area between the photocatalyst blade and the fluid (waste water or gas) per unit time is greatly increased.

FIG. 8 is a cross sectional view showing a third embodiment of the purification apparatus according to the present invention, and FIG. 9 is a longitudinal sectional view seen from line III-III and IV-IV of FIG. Since the perspective view of the third embodiment is the same as that of FIG. 2, the overlapping perspective view is omitted.

The purification apparatus of the third embodiment differs from the second embodiment in that the rotatable photocatalyst portion 30 is fixed to the shaft 20 and rotated in accordance with the flow of fluid, and is composed of a plurality of photocatalyst blades 32. And a cleaning brush 33a for cleaning the ultraviolet light transmitting tube by friction caused by the rotation of the photocatalyst between the plurality of photocatalyst blades.

As can be seen in FIG. 8, a plurality of photocatalyst blades 32 and cleaning brushes 33a are attached to the shaft 20 rotated by the rotational force by the blade 10. The photocatalyst blade 32 is formed by coating a photocatalyst on plastic or stainless steel. When viewed along the line III-III in the cross-sectional view of Figure 9, the photocatalyst blade 32 has a shape similar to the blade 10, and causes a rotational force by the reaction by the fluid passing through. Therefore, the photocatalyst blade rotates in accordance with the flow of the fluid, and receives the ultraviolet rays emitted from the ultraviolet generating means to cause the photocatalyst phenomenon. Therefore, the purification apparatus according to the present invention can greatly enhance the purification efficiency since the contact area between the photocatalyst blade and the fluid (waste water or gas) per unit time is greatly increased.

The cleaning brush 33a is preferably made of a flexible nylon or other fiber as a brush for cleaning the ultraviolet light transmission tube. As can be seen along the line IV-IV in the cross-sectional view of FIG. 9, a cleaning brush 33a is attached to the shaft 20 between the photocatalyst blades 33. Therefore, the rotational force of the photocatalyst blade 33 due to the fluid flow is transmitted to the shaft 20, and the cleaning brush 33a also rotates as the shaft 20 rotates. Therefore, since the cleaning brush 33a does not adhere to the ultraviolet transmission tube 40 and maintains cleanliness, the phenomenon in which ultraviolet rays from the ultraviolet generating means 50 are blocked by the contaminants is prevented and absorbs ultraviolet rays smoothly. Can be.

Such a purification device can be utilized for exhaust gas purification devices of automobiles, as well as household or industrial air purifiers, building air purification systems, farms, purification plants, water purification plants for factories, apartment complexes and household water purification systems. Device or the like. In addition, due to the vortex caused by the flow of waste water and exhaust gas at high speed, the purification effect is shown over a large surface area in a short time.

As described above, the purification device having the blade for rotating the photocatalyst according to the present invention may have the following effects.

First, the ultraviolet light emitted from the light source can effectively purify the waste water or the exhaust gas by contacting a large amount of waste water or exhaust gas for a sufficient time per unit time to undergo the photocatalytic reaction, and can clean the photocatalyst through the blade without additional power supply. It is possible to provide a purification field equipped with a blade for rotating the photocatalyst which is enhanced by the fluid purification effect.

Second, due to the vortex phenomena caused by the flow of waste water or exhaust gas at high speed, the sterilization and purification effect can be shown over a large surface area (reaction area) for a short time.

Third, in the aspect of air purification and water purification, organic compounds contaminated in the air are decomposed and converted into harmless water and carbon dioxide by a combination of a photocatalyst and ultraviolet generation means. When used in an automobile air conditioner or an exhaust system, it is possible to further improve the comfort and life of the vehicle as well as the effect of preventing air pollution. In addition, it can be utilized in household air purifiers or industrial and building air purifiers.

In the above, the best embodiments have been disclosed in the specification with reference to the drawings, but for the purpose of easily understanding the present invention. Therefore, the present invention is not limited to the above embodiments, and the true technical protection scope of the present invention should be defined by the technical spirit of the appended claims. In addition, one of ordinary skill in the art will appreciate that various modifications and equivalent other embodiments can be derived from the purpose and configuration of the present invention, but this is also within the scope of the present invention.

Claims (8)

A photocatalyst portion 30 made of a photocatalyst material and rotatable; A shaft 20 supporting a rotation axis of the photocatalyst; A support shaft 25a for supporting the shaft; A blade 10 fixed to the shaft to impart rotational force to the photocatalyst according to the flow of the fluid; A cylindrical ultraviolet transmission tube (40) for accommodating the blade and the shaft and allowing fluid to pass from one side to the other side; A body 60 accommodating the ultraviolet light transmitting tube and having an ultraviolet generating means 50 for irradiating ultraviolet rays toward the ultraviolet light transmitting tube inside; And And a frame (62) coupled to one side and the other side of the body to allow the fluid to pass therethrough. The method of claim 1, The rotatable photocatalyst unit 30 includes a housing through which the fluid can pass, and a photocatalyst carrier 31a filled in the housing. The method of claim 1, The housing is a purification device using a blade for rotating the photocatalyst, characterized in that it comprises a cleaning brush (30a) for washing the ultraviolet transmission tube by the friction caused by the rotation of the photocatalyst. The method of claim 1, The ultraviolet generating means (50), UV-LED purification device using a photocatalyst rotating blade, characterized in that the (UV-LED). The method of claim 1, The rotatable photocatalyst unit 30 is fixed to a shanghai shaft and rotated according to the flow of fluid, the purification device using a photocatalyst rotating blade, characterized in that it comprises a plurality of photocatalyst blades made of a photocatalyst carrier. The method of claim 4, wherein The shaft has a cleaning brush (33a) for cleaning the ultraviolet transmission tube by the friction caused by the rotation of the photocatalyst between the plurality of photocatalyst blades, characterized in that the purification device using a blade for rotating the photocatalyst. The method of claim 1, The ultraviolet transmission tube 40 is a purification device using a photocatalyst rotating blade, characterized in that consisting of a quartz tube. The method of claim 1, The ultraviolet transmission tube 40 is a purification device using a photocatalyst rotating blade, characterized in that consisting of Teflon tube.

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