JP2006149363A - Photocatalytic sterilization net - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a photocatalytic sterilization net to which no aquatic lives such as algae, acorn barnacle, etc., attach themselves, which does not contaminates the environment and maintains sterilization effect for a long period of time. <P>SOLUTION: Titanium oxide being a photocatalytic substance is incorporated into a synthetic resin and molded to give photocatalytic members 8, which are attached to long-length parts 7 forming the network 6 of a net body 5 of the photocatalytic sterilization net 3 or 54. The long and slender main body parts 11 of the photocatalytic members 8 have attachment parts 14 for springily opening and closing main body grooves 16 on semicylindrical bodies 13 having the main body grooves 16. The main body parts 11 are equipped with both end parts 12 of tapered semi-truncated cones connected in the longitudinal direction. End part grooves 17 are formed at the end parts 12. The long-length parts 7 of the net body 5 are fitted from the main body grooves 16 to the end part grooves 17. Sterilization action is attained by the photocatalytic function of titanium oxide, adhesion of aquatic lives is prevented and water for cultured fish is cleaned. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

The present invention relates to a photocatalytic sterilization net that prevents underwater organisms from adhering to the net.
In this specification, the term “net” means a fish net that captures seafood in aquaculture ponds, aquariums, seas, rivers, lakes, etc., a net that defines aquaculture spaces such as underwater ginger for aquaculture of fish, A concept that includes a filter that allows water to flow in the thickness direction to purify water used for aquaculture, etc., and also includes a single longitudinal body or a plurality of juxtaposed longitudinal bodies It must be.

  Aquatic organisms adhere to the nets that define the aquaculture space for underwater ginger for aquaculture of fish, crustaceans, shellfish, algae, etc., over a long period of use. Examples of aquatic organisms are algae and barnacles. As a result, the water flowing through the mesh of the aquaculture net is hindered and the water quality deteriorates. Moreover, when a barnacle adheres to an aquaculture net | network, the operator's work efficiency which handles the net | network will worsen. In addition, parasites may breed on such aquaculture nets.

  In the prior art, a paint containing an organotin compound is applied to prevent aquatic organisms from attaching to the aquaculture net. This prior art has a problem that the environment is polluted and the adhesion preventing effect lasts only for a short period of time.

  An object of the present invention is to provide a photocatalyst sterilization net and a photocatalyst member which are capable of sustaining a sterilization effect for a long period of time without causing aquatic organisms to adhere, polluting the environment.

  The present invention is a photocatalytic sterilization net characterized in that a part formed by mixing titanium oxide powder in a synthetic resin is attached to a net body.

The present invention also includes a net body,
A photocatalytic sterilization net, which is attached to a long portion forming the mesh of the net body, and has a photocatalytic member having at least a surface made of a material containing a substance having a photocatalytic function and having elasticity.

  According to the present invention, the substance having a photocatalytic function is titanium oxide. In this specification, titanium oxide is a concept including titanium oxide, strontium titanate, anatase-type titanium oxide, hydrous titanium oxide, hydrated titanium oxide, metatitanic acid, orthotitanic acid, titanium hydroxide, etc., and has a photocatalytic function. Has bactericidal action. When titanium oxide is irradiated with light having a wavelength greater than its band gap, such as sunlight, fluorescent light, mercury lamp, incandescent light, etc., such as near ultraviolet rays of 300 to 400 nm, electrons are excited into the conduction band by photoexcitation. Holes are generated in the band, and the bactericidal action is achieved using the strong reducing power of the electrons generated by photoexcitation and the strong oxidizing power of the holes, and the actions of decomposition and deodorization of organic substances are achieved. . This makes it possible to kill harmful substances such as algae and fungi contained in the water, decompose the harmful substances, and clean the water. This prevents aquatic organisms such as algae and barnacles from attaching to the net, and prevents breeding of cultured fish such as red sea bream and parasites such as prawns. Titanium oxide can also be used over a long period of time because it only achieves a photocatalytic function and is not itself consumed. Titanium oxide has a particle size of 3 to 230 nm, preferably 6 to 22 nm, in particular 7 to 20 nm, more particularly 7 nm. This achieves high photocatalytic activity and excellent dispersibility.

  Titanium oxide, which is an example of a substance having a photocatalytic function, is mixed with a synthetic resin, and a photocatalyst member is manufactured by molding such as injection molding. The photocatalyst member is attached to a long portion that forms a mesh of the net body. Is done. Synthetic resins mixed with substances such as titanium oxide are, for example, thermoplastic resins and thermosetting resins, and may be polyester resins, polyolefin resins, polyamide resins, fluororesins, and other various synthetic resins. It may be. By using a photocatalyst member having a structure in which a synthetic resin is mixed with a substance such as titanium oxide having a photocatalytic function, the substance such as titanium oxide is not peeled off or removed, and is used for a long period of time. be able to.

  A substance such as titanium oxide having a photocatalytic function may be configured to be attached to the surface of a carrier mounted on the net body by a technique such as coating. The carrier may be made of, for example, the aforementioned synthetic resin, or may be made of an inorganic material or the like.

  In addition to titanium oxide, metal powders having a bactericidal action such as silver and copper may be mixed and used.

  According to the present invention, the photocatalytic member is made of a material including a powder made of titanium oxide as a substance having a photocatalytic function and a synthetic resin.

  According to the present invention, in the case of a mixture containing a titanium oxide powder and a synthetic resin, the titanium oxide powder accounts for 0.01 to 20% by weight, preferably 11 to 15% by weight of the photocatalytic member. Including. As a result, the photocatalytic function of titanium oxide can be sufficiently achieved, and the elasticity of the mounting part for mounting the photocatalyst member to the long part of the net body can be fully exhibited, and the mounting Thereafter, there is no possibility that the photocatalyst member is undesirably peeled off by an external force during use.

In the present invention, the photocatalytic member is
(A) an elongated body,
A main body groove into which the elongated portion of the net body fits;
A main body having a mounting portion that covers the elongate portion in the circumferential direction and can elastically open and close the main body groove;
(B) both end portions continuous in the longitudinal direction of the main body,
Each of these ends is tapered as it becomes a free end in the longitudinal direction,
And an end portion having an end groove into which the long portion fits.

  According to the present invention, as shown in FIGS. 1 to 12 to be described later, a main body part that forms a part of an elongated cylinder, and both end parts that form a part of a cone, A part in the circumferential direction of the long portion is fitted, and the remaining portion in the circumferential direction of the long portion is covered by the mounting portion, and the photocatalytic member is mounted on the long portion. The mounting portion has elasticity, and can open and close a main body groove formed in the main body portion, whereby the photocatalytic member can be detachably mounted on the long portion.

  Both ends connected to the main body are tapered, and the apex angle θ may be 40 to 60 degrees or 45 degrees, for example. Therefore, when the mesh is a rectangle such as a square or a rectangle, Mutual contact, collision and the like of adjacent photocatalyst members at the connecting portion can be prevented. This prevents the photocatalyst member from being detached from the long portion by an external force such as contact or collision.

In the present invention, the main body is
A semi-cylindrical body having the body groove;
It is connected to both ends of the semi-cylindrical body in the circumferential direction, and extends in the same direction in the longitudinal direction so as to be opposed to about 1/4 of the entire circumference in the circumferential direction, and forms a plurality of pairs at intervals in the longitudinal direction. And a mounting part arranged
The end is
The base end is a semi-rectangular truncated cone connected to the semi-cylindrical cylinder,
It has the said end part groove | channel which has an axis line on a straight line common to the said main body groove | channel, and is characterized by the above-mentioned.

Further, the present invention is a photocatalyst member that is attached to a long portion and at least a surface is made of a material having a photocatalytic function,
(A) an elongated body,
A semi-cylindrical body having a main body groove into which a long part forming a mesh of the net body is fitted;
It is connected to both ends of the semi-cylindrical body in the circumferential direction, and extends in the same direction in the longitudinal direction so as to oppose about 1/4 of the entire length in the circumferential direction, and forms a plurality of pairs at intervals in the longitudinal direction. A main body having a mounting portion that is disposed and covers the elongated portion in the circumferential direction and can open and close the main body groove elastically;
(B) Both ends that are continuous in the longitudinal direction of the main body, each of these ends being
The base end is connected to the semi-cylindrical cylinder, and is a tapered semi-rectical truncated cone as it becomes the free end of the long main body, and is connected with an axis on a straight line common to the main body groove. The photocatalyst member includes an end portion having an end groove to be fitted.

  According to the present invention, as shown in FIGS. 1 to 8 to be described later, the half-right cylindrical body of the main body and the half-right truncated cone of the end have axes on a straight line, and the length of the net body is long. The remaining part of the long part is fitted by a mounting part that covers and fits about 180 degrees in the circumferential direction, and extends from the circumferential ends of the semi-cylindrical body of the main body part to about 1/4 of the entire circumference in the circumferential direction. Half a circle is covered. In this way, the photocatalyst member is reliably prevented from being undesirably detached from the long portion by an external force.

  In the vicinity of the boundary between the semi-cylindrical cylinder and the mounting portion, for example, a concave portion extending along the longitudinal direction is formed on the outer peripheral portion thereof, so that the main body groove can be easily opened to attach the main body portion to the long portion. It may be easy.

In the present invention, the main body is
The overall shape having the body groove is a substantially cylindrical body,
A cross-section cut in the circumferential direction along the longitudinal direction and perpendicular to the longitudinal direction is C-shaped,
Extending in the entire length along the longitudinal direction, having a recess recessed toward the outer periphery,
The end is
The base end part is a semi-right circular truncated cone connected to the right cylindrical body,
It has the said end part groove | channel which has an axis line on a straight line common to the said main body groove | channel, and is characterized by the above-mentioned.

Further, the present invention is a photocatalyst member that is attached to a long portion and at least a surface is made of a material having a photocatalytic function,
(A) an elongated body,
It has a main body groove into which the long part forming the mesh of the net body is fitted, and the overall shape is a substantially cylindrical body,
A cross-section cut in the circumferential direction along the longitudinal direction and perpendicular to the longitudinal direction is C-shaped,
A main body portion that extends along the longitudinal direction and has a recessed portion that is recessed toward the outer periphery, covers the long portion in the circumferential direction, and can open and close the main body groove elastically,
(B) Both ends that are continuous in the longitudinal direction of the main body, each of these ends being
The base end is connected to the right cylindrical body, and is a semi-rectangular truncated cone that tapers as it becomes the free end of the longitudinal main body.
The photocatalyst member is characterized by having an end groove that is continuous with the main body groove of the main body portion, has the elongated portion fitted therein, and has an axis line on a straight line common to the main body groove.

  According to the present invention, as shown in FIGS. 9 to 12 to be described later, the longitudinal direction of the main body, that is, the cross section perpendicular to the axial direction is C-shaped, and the radius is reduced by the recess extending along the longitudinal direction. The thickness in the direction is formed so that the part extending in the circumferential direction from the concave part functions as a mounting part, and when the long part is attached to the body groove, the part extends in the circumferential direction from the concave part. By opening the portion that functions as the mounting portion, it is easy to mount the main body to the long portion.

The present invention is characterized in that a large number of convex portions are formed on the outer periphery of the main body portion.
According to the present invention, the surface area is increased by forming a large number of convex portions, and as a result, the contact area of titanium oxide can be increased and the photocatalytic function can be further improved. This convex part may be formed also in the both ends connected to a main-body part.

  Each of the plurality of convex portions may be formed in a shape that forms a part of a sphere, but may be formed in a needle shape or a spine shape, or may have other shapes. A concave portion may be used instead of the convex portion.

  Further, the present invention is characterized in that a color for reflecting light and recognizing the photocatalyst member is provided.

  According to the present invention, the photocatalytic member can be recognized by fish, crustaceans and the like by reflecting the light.

  According to the present invention, attachment of aquatic organisms to the long part of the net body is prevented over a long period of time, and there is no environmental pollution, and strong sterilizing power can be maintained over a long period of time, and water is purified. Is done. The present invention can be practiced in water such as sea water and fresh water.

  According to the present invention, fish, crustaceans and the like can recognize the photocatalyst member, and thus can be prevented from colliding with the photocatalyst member. In other words, fish and crustaceans can be prevented from colliding and getting entangled with the net on which the photocatalytic member is mounted. As a result, it is possible to prevent deaths and injuries caused by fish and crustaceans colliding with the net on which the photocatalytic member is mounted and entangled.

  FIG. 1 is an enlarged perspective view showing a part of an embodiment of the present invention, and FIG. 2 is a perspective view showing a simplified overall configuration. The water 1 such as an aquaculture pond, an aquarium, or the sea is provided with a photocatalytic sterilization net 3 according to the present invention that defines a culture space 2 for culturing fish, crustaceans and the like. The aquaculture space 2 defined by the net 3 has four peripheral walls and a bottom, and forms a cubic or cuboid aquaculture space 2. In this aquaculture space 2, water 1 flows in the thickness direction of the net 3. The thickness direction is a direction perpendicular to the paper surface of FIG. 1, a left-right direction in FIG. 2 of the peripheral wall, and a vertical direction in FIG. The upper part of the peripheral wall of the net 3 is attached to the float 4, and the net 3 is suspended from the water 1. The aquaculture space 2 defined by the net 3 is irradiated with sunlight, or is irradiated with light including ultraviolet rays directly or through an optical fiber from an illumination lamp such as a fluorescent lamp, a mercury lamp, or an incandescent lamp. The

  The net 3 has a net body 5 and a photocatalyst member 8 according to the present invention that is attached to a long portion 7 that forms the mesh 6 of the net body 5. The net body 5 has a plurality of long portions 7 made of ropes or strings arranged side by side in the vertical direction and a plurality of long portions 7 in the horizontal direction. The mesh 6 is formed.

  The photocatalyst member 8 basically has an elongated main body portion 11 and both end portions 12 continuous in the longitudinal direction of the main body portion 11. The main body 11 includes a semi-rectilinear cylinder 13 and a pair of mounting parts 14 that are connected to both ends in the circumferential direction of the semi-cylindrical body 13. Although only a single photocatalyst member 8 may be attached to the long portion 7 as shown in FIG. 1, in another embodiment of the present invention, the single long portion 7 has its long portion. 7 may be mounted adjacent to each other in the longitudinal direction.

  FIG. 3 is a simplified perspective view showing a state in which the photocatalyst member 8 is attached to the long portion 7 of the net 3. As shown by the arrow 15 in FIG. 3, the mounting portion 14 that makes a pair in the circumferential direction is elastically deformed by the operator in the direction away from each other with a finger to open the main body groove 16 of the main body portion 11, The long portion 7 is fitted over the end groove 17 of the portion 12. By releasing the force on the mounting portion 14, the long portion 7 is fitted in the main body groove 16 and the end groove 17, and the mounting portion 14 closes the long portion 7 in the circumferential direction.

  4 is a left side view of the photocatalyst member 8, FIG. 5 is a plan view of the photocatalyst member 8, FIG. 6 is a front view of the photocatalyst member 8, and FIG. 7 is a rear view of the photocatalyst member 8. 8 is a cross-sectional view as seen from the cut surface VIII-VIII in FIG. 6. The right side view of the photocatalyst member 8 appears symmetrically in FIG. 4, and the bottom view is the same as FIG. The photocatalyst member 8 is formed in plane symmetry with respect to a symmetry plane 19 including the axis 18, and is configured in plane symmetry with respect to a symmetry plane 21 perpendicular to the axis 18. The semi-cylindrical cylinder 13 constituting the main body 11 has a main body groove 16 having a semicircular cross section with an axis having an axis on a straight line common to the axis 18. In the semi-rectilinear cylinder 13, a total of four sets of mounting portions 14, which are paired with both circumferential end portions 22, are arranged along the axis 18 and spaced in the longitudinal direction along the axis 18. The paired mounting portions 14 extend in the circumferential direction so as to face each other at about a quarter of the entire circumference at the same position in the longitudinal direction along the axis 18, and are divided by a slight gap 23 in the circumferential direction. The gap 23 is, for example, zero, and the opposing circumferential free end surfaces of the paired mounting portions 14 may be in contact with each other in a natural state.

  The end portion 12 is a semi-rectical truncated cone whose base end 24 is continuous with the longitudinal free end of the semi-cylindrical cylinder 13 and becomes tapered as it becomes the free end in the longitudinal direction. The end portion 12 includes an inclined surface 26 that forms a truncated right truncated cone that extends from a large diameter portion of the base end 24 to a small diameter end surface 25 perpendicular to the axis 18, and a plane 27 that includes the axis 18. On the extension of the flat surface 27, the circumferential end portions 22 of the semi-cylindrical cylinder 13 are present.

  On the outer periphery of the semi-cylindrical cylinder 13 of the main body 11, a large number of convex portions 28 are dotted. In this embodiment, the convex portion 28 is hemispherical. The convex portion 28 may be formed on the outer periphery of the mounting portion 14, or may be formed on the outer periphery of the end portion 12. The convex portion 28 increases the area of the photocatalyst member 8 and achieves the photocatalytic function more efficiently. The diameter of the hemispherical convex portion 28 may be set to a value of 1/10 to 1/20 of the outer diameter of the semi-rectilinear cylinder 13.

  The photocatalyst member 8 is a mixture of titanium oxide and synthetic resin, and is manufactured by molding such as injection molding. Titanium oxide is mixed in an amount of 0.01 to 20% to achieve a photocatalytic function, and as described above with reference to FIG. The photocatalyst member 8 can be mounted on the long portion 7 and the photocatalyst member 8 can be exchanged.

  In another embodiment of the present invention, a target recess 29 may be further formed with respect to one imaginary plane including the axis 18 near the boundary between the semi-cylindrical body 13 and the mounting portion 14 of the main body 11. The recess 29 has a curved surface forming a part of a cylindrical body and faces the outer periphery of the main body 11. With the recess 29, the mounting portion 14 can be easily deformed as indicated by the arrow 15.

  9 is a left side view of a photocatalyst member 8a according to another embodiment of the present invention, FIG. 10 is a plan view of the photocatalyst member 8a, FIG. 11 is a front view of the photocatalyst member 8a, and FIG. 12 is a photocatalyst. It is a rear view of the member 8a. The right side view of the photocatalyst member 8a appears symmetrically with the left side view, and the bottom view of the photocatalyst member 8a is the same as the plan view of FIG. The photocatalyst member 8a shown in FIGS. 9 to 12 is similar to the photocatalyst member 8 of FIGS. 1 to 8 described above, and corresponding portions are denoted by the same reference numerals. The main body 11 has a substantially cylindrical shape as a whole having the main body groove 16. The main body 11 is divided by a gap 23 in the circumferential direction along the axis 18, and a cross section perpendicular to the longitudinal direction is C-shaped. The main body 11 is formed with a recess 49 that extends the entire length along the longitudinal direction. The concave portion 49 has a part of the surface of the target cylindrical body with respect to the virtual plane including the axis 18 and is formed to be concave toward the outer periphery. Both end portions 12 connected in the longitudinal direction of the main body portion 11 are right circular truncated cones whose base ends 24 are connected to the right cylindrical body 33. Each of these end portions 12 has an end groove 17 having an axis line on a straight line that is an axis line 18 common to the main body groove 16.

  The concave portion 49 formed in the main body portion 11 forms a thin thickness in the radial direction of the main body portion 11. As a result, the portion that extends from the recess 49 toward the gap 23 in the circumferential direction functions as the mounting portion 34 as described above. Therefore, when the elongated portion 7 is attached to the main body groove 16, as shown in FIG. 10, the portion functioning as the attachment portion 34 extending to the dividing position in the circumferential direction from the concave portion 49 is indicated by an imaginary line 30. Opening makes it easy to attach the main body 11 to the long portion 7. Other configurations and operations are the same as those of the embodiment described with reference to FIGS.

  FIG. 13 is a simplified perspective view of a net 51 according to still another embodiment of the present invention. The aquaculture pond 52 is formed on the land using a material such as concrete or synthetic resin, and the photocatalyst sterilization net 3 of the present invention is disposed along the inner peripheral wall thereof. A drainage port 53 that can be opened and closed is provided at the bottom of the aquaculture pond 52 so that water such as fish and crustaceans to be cultivated can be drained. By arranging the photocatalyst sterilization net 3 of the present invention in the culture space in the vicinity of the inner peripheral wall of the culture pond 52 and further above the bottom, water can be purified.

  FIG. 14 is a simplified perspective view of yet another embodiment of the present invention. A plurality of the photocatalyst sterilization nets 54 of the present invention are attached in a vertically extending manner along the inner peripheral wall of the culture pond 52 made of a material such as concrete or synthetic resin. In the photocatalyst sterilization net 54, one or a plurality of photocatalyst members 57 are attached to an elongated long portion 56 extending vertically. The photocatalyst member 57 may have the same configuration as the photocatalyst members 8 and 8a described above. Accordingly, the water in the groove in the culture pond 52 can be purified by the photocatalytic function of the photocatalytic member 57. Other configurations are similar to the embodiment of FIG.

  The present invention can also be used as a filter that allows water to be cleaned to flow through a photocatalyst sterilization network having a small mesh size, and such a filter is also included in the concept of the network.

  In another embodiment of the present invention, the titanium oxide powder is dispersed in a solution and adhered to the surface of the carrier mounted on the long portions 7 and 56 by a technique such as coating, so that the photocatalytic members 8, 8 a, and 57 are used. May be manufactured. The carrier may be made of, for example, the aforementioned synthetic resin material, but may be made of an inorganic material.

  The photocatalyst members 8, 8a, 57 of the embodiment of the present invention and other embodiments are colored. The color to be applied is a color that causes fish and crustaceans to recognize the presence of the photocatalytic member by the reflected light reflected by this color. The color may be the color of the photocatalyst member 8, 8a, 57 itself, or may be applied by applying to the surface of the photocatalyst member 8, 8a, 57. Specifically, by coloring the photocatalyst members 8, 8 a, 57, light that passes through water is reflected by the color applied to the photocatalyst members 8, 8 a, 57. When this reflected light enters the vision of fish and crustaceans, the fish and crustaceans can recognize the presence of the photocatalytic member 13.

  Specifically, the photocatalyst members 8, 8 a, and 57 of the embodiments of the present invention and other embodiments absorb light having a long wavelength such as red and light having a short wavelength such as blue and green. Since it is transmitted, green is applied to reflect green light that passes through water. As a result, the photocatalyst members 8, 8a, 57 reflect the green light that passes through the water, and the reflected light enters the sight of fish and crustaceans, thereby recognizing the photocatalyst members 8, 8a, 57 to the fish and crustaceans. Can be made. This can prevent fish and crustaceans from colliding with the photocatalytic members 8, 8 a and 57. In other words, it is possible to prevent collision and entanglement with the photocatalyst sterilization net 3, 54. Therefore, it is possible to prevent deaths and injuries of fish and crustaceans resulting from collision and entanglement with the photocatalyst sterilization net 3, 54.

  In addition, tuna and squid are all color blind, and only “lightness” can be identified among “hue”, “saturation”, and “lightness” of the Munsell color system. Therefore, all-color-blind fish and crustaceans identify objects by the difference in brightness, and as the difference in brightness increases, the objects are easily identified. A conventional black mesh has a small difference between the brightness of the color of the mesh and the brightness based on transmitted light passing through water (hereinafter simply referred to as “water brightness”). Therefore, all color blind fish and crustaceans are unable to distinguish between nets and water. Therefore, all-color blind fish and crustaceans collide with or get entangled in the net and are injured. In the embodiments of the present invention and other embodiments, the difference between the lightness of green and the lightness of water applied to the photocatalyst members 8, 8 a, 57 is increased so that the photocatalyst can be applied to all color blind fish and crustaceans. The presence of the members 8, 8a, 57 can be recognized. In the present embodiment, the brightness of green is greater than the brightness of water. This prevents all color blind fish and crustaceans from colliding with the photocatalyst members 8, 8 a and 57. In other words, it is possible to prevent all-color-blind fish and crustaceans from colliding with and entangled with the photocatalytic sterilization net 3,54. It is possible to prevent deaths and injuries of all-color blind fish and crustaceans resulting from collision with the photocatalyst sterilization net 3, 54 and entanglement.

  In the present embodiment, the photocatalyst members 8, 8a, 57 are colored green, but are not necessarily limited to this color. In the vicinity of the water surface, the attenuation of light having a long wavelength such as red is small, so that the photocatalyst members 8, 8a, 57 may be red, yellow, or white. Fish and crustaceans that live in shallow regions such as freshwater fish can recognize the “hue”, “saturation”, and “lightness” of the Munsell color system. Therefore, even when the color is applied, if the net and the water tank are disposed in a region where the water depth is shallow, the freshwater fish recognizes these colors and recognizes the presence of the photocatalyst members 8, 8a, 57. Therefore, the same effect as when green is applied to the photocatalyst members 8, 8a, 57 is produced.

  In the present embodiment, the photocatalyst members 8, 8a, and 57 are colored, but the present invention is not necessarily limited thereto. For example, a part of the photocatalyst members 8, 8 a, 57, for example, the main body part 11 may be colored, and the convex part 28 may be colored. It suffices that at least the surface portion facing the aquaculture space 2 is colored, and the sterilizing function of the photocatalytic members 8, 8a, 57 is not inhibited. Moreover, it is not limited to what gives the same color to all the photocatalyst members 8,8a, 57 arrange | positioned at the photocatalyst sterilization net | network 3. FIG. For example, the photocatalyst members 8, 8a, 57 in the horizontal row may be colored red, and the photocatalyst members 8, 8a, 57 in the vertical row may be colored yellow, and all the photocatalyst members 8, 8a, 57 are colored differently. May be.

It is a perspective view which expands and shows a part of one embodiment of the present invention. It is a perspective view which simplifies and shows the whole structure. 3 is a simplified perspective view showing a state in which the photocatalyst member 8 is attached to the long portion 7 of the net 3. FIG. 4 is a left side view of the photocatalytic member 8. FIG. 3 is a plan view of a photocatalyst member 8. FIG. 3 is a front view of a photocatalyst member 8. FIG. 4 is a rear view of the photocatalyst member 8. FIG. It is sectional drawing seen from the cut surface VIII-VIII of FIG. It is a left view of the photocatalyst member 8a of the other form of implementation of this invention. It is a top view of the photocatalyst member 8a. It is a front view of the photocatalyst member 8a. It is a rear view of the photocatalyst member 8a. It is the simplified perspective view of the net | network 51 of the further another form of implementation of this invention. It is the simplified perspective view of other embodiment of this invention.

Explanation of symbols

2 aquaculture space 3,54 photocatalyst sterilization net 5 net body 6 mesh 7,56 long portion 8, 8a, 57 photocatalyst member 11 body portion 12 end portion 13 semi-right cylindrical body 14, 34 mounting portion 17 end groove 18 axis 19 , 21 Symmetry plane 22 Both ends in the circumferential direction 23 Gap 24 Base end 28 Convex part 29, 49 Concave part 33 Cylindrical body

Claims (11)

  A photocatalytic sterilization network, wherein a part formed by mixing titanium oxide powder in a synthetic resin is attached to a net body. The net body,
A photocatalytic sterilization net comprising a photocatalytic member attached to a long portion forming a mesh of the net body, having at least a surface made of a material containing a substance having a photocatalytic function, and having elasticity.   3. The photocatalyst sterilization network according to claim 2, wherein the photocatalyst member is made of a material including a powder made of titanium oxide as a substance having a photocatalytic function and a synthetic resin. The photocatalyst member is
(A) an elongated body,
A main body groove into which the elongated portion of the net body fits;
A main body having a mounting portion that covers the elongate portion in the circumferential direction and can elastically open and close the main body groove;
(B) both end portions continuous in the longitudinal direction of the main body,
Each of these ends is tapered as it becomes a free end in the longitudinal direction,
4. The photocatalytic sterilization network according to claim 2, further comprising an end portion that is continuous with the main body groove of the main body portion and has an end groove into which the elongated portion is fitted. The main body is
A semi-cylindrical body having the body groove;
It is connected to both ends of the semi-cylindrical body in the circumferential direction, and extends in the same direction in the longitudinal direction so as to be opposed to about 1/4 of the entire circumference in the circumferential direction, and forms a plurality of pairs at intervals in the longitudinal direction. And a mounting part arranged
The end is
The base end is a semi-rectangular truncated cone connected to the semi-cylindrical cylinder,
5. The photocatalyst sterilization net according to claim 4, wherein the end groove is continuous with an axis on a straight line common to the main body groove. The main body is
The overall shape having the body groove is a substantially cylindrical body,
A cross-section cut in the circumferential direction along the longitudinal direction and perpendicular to the longitudinal direction is C-shaped,
Extending in the entire length along the longitudinal direction, having a recess recessed toward the outer periphery,
The end is
The base end part is a semi-right circular truncated cone connected to the right cylindrical body,
5. The photocatalyst sterilization net according to claim 4, wherein the end groove is continuous with an axis on a straight line common to the main body groove.   7. The photocatalyst sterilization net according to claim 5, wherein a plurality of convex portions are formed on the outer periphery of the main body portion. A photocatalyst member mounted on the long part and made of a material having at least a photocatalytic function,
(A) an elongated body,
A semi-cylindrical body having a main body groove into which a long part forming a mesh of the net body is fitted;
It is connected to both ends of the semi-cylindrical body in the circumferential direction, and extends in the same direction in the longitudinal direction so as to oppose about 1/4 of the entire length in the circumferential direction, and forms a plurality of pairs at intervals in the longitudinal direction. A main body having a mounting portion that is disposed and covers the elongated portion in the circumferential direction and can open and close the main body groove elastically;
(B) Both ends that are continuous in the longitudinal direction of the main body, each of these ends being
The base end is connected to the semi-cylindrical cylinder, and is a tapered semi-rectical truncated cone as it becomes the free end of the long main body, and is connected with an axis on a straight line common to the main body groove. A photocatalyst member comprising an end portion having an end groove to be fitted. A photocatalyst member mounted on the long part and made of a material having at least a photocatalytic function,
(A) an elongated body,
It has a main body groove into which the long part forming the mesh of the net body is fitted, and the overall shape is a substantially cylindrical body,
A cross-section cut in the circumferential direction along the longitudinal direction and perpendicular to the longitudinal direction is C-shaped,
A main body portion that extends along the longitudinal direction and has a recessed portion that is recessed toward the outer periphery, covers the long portion in the circumferential direction, and can open and close the main body groove elastically,
(B) Both ends that are continuous in the longitudinal direction of the main body, each of these ends being
The base end is connected to the right cylindrical body, and is a semi-rectangular truncated cone that tapers as it becomes the free end of the longitudinal main body.
A photocatalyst member having an end groove that is continuous with the main body groove of the main body portion, the long portion is fitted therein, and has an axis line on a straight line common to the main body groove.   The photocatalyst member according to claim 8 or 9, wherein the photocatalyst member is made of a material containing a powder made of titanium oxide as a substance having a photocatalytic function and a synthetic resin.   The photocatalyst member according to any one of claims 8 to 10, wherein the photocatalyst member is colored to reflect light and recognize the photocatalyst member.

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