JP2016054679A - Fish aquarium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fish aquarium that can remove underwater deposit comprising remaining bait and feces in a short time, is reduced in remainder of the underwater deposit of the bottom, is reduced in discharging of a tank water, does not generate a strong water flow, is reduced in an adverse effect to fishes, and is reduced in the need of maintenance.SOLUTION: A fish aquarium includes: a water tank 12 for holding a tank water 1 in the inside and breeding or culturing fishes; permeable capture cloth 14 stretched along a bottom face 12a of the water tank 12, and capturing underwater deposits 2 comprising remaining bait and feces; a capture cloth moving device 16 for returnably moving a portion of the capture cloth 14 to the outside along an inner wall of the water tank 12 while stretching the capture cloth in the bottom face 12a; and a capture cloth cleaning device 18 for removing the underwater deposit 2 captured to the capture cloth 14 and cleaning the capture cloth 14 in the outside of the water tank 12.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a fish tank facility for rearing or culturing fish.

  In the breeding or aquaculture of fish, water pollution due to leftover food (residual food) is an unavoidable problem. The remaining food settles in the water and accumulates at the bottom of the water. There, microorganisms that use the residual food propagate, consume oxygen, and become a source of pathogenic bacteria. In addition, the surrounding water is polluted by organic substances and nutrients eluted from the residual food. In particular, the problem of residual bait is large because it is a closed system in the breeding or aquaculture of fish using an aquarium.

  Conventionally, removal of sediment in water such as residual food and feces has mainly relied on human hands. However, manual removal of underwater sediment has been labor intensive and has been a cause of labor shortage.

  Thus, for example, Patent Documents 1 to 4 have already been proposed as means for removing sediment in water such as residual food and feces.

  In Patent Document 1, residual food, feces, and the like are pumped up from the bottom of the water tank by a gas-liquid mixed water flow and discharged out of the water tank.

  In Patent Document 2, a groove is provided at the center bottom of the water tank, and the bottom of the water tank is inclined so that food and feces fall into the groove, and a belt conveyor is installed in the groove. In addition, a pipe is placed at the end of the belt conveyor in the direction of travel to carry the food and feces collected by the belt conveyor with an air lift or pump to the top, and then dropped onto a microscreen hung on two motorized rollers. Remove with equipment.

  In Patent Document 3, a horizontally long suction head is connected to the upstream end of the hose, and a weight is attached to the suction head and disposed on the bottom surface of the water tank. Further, a hose is routed out of the tank, the downstream end thereof is disposed at a position lower than the suction port of the suction head, and a rope is provided for reciprocating the suction head along the bottom surface of the water tank. When the inside of the suction head and the hose is filled with water and the rope is pulled, the suction head moves along the bottom surface of the water tank, and the sediment on the bottom surface is continuously sucked up and discharged together with water by a siphon phenomenon.

  In patent document 4, the sediment suction part which sucks the sediment of the inner bottom of a water storage tank with water, the cleaning robot part which can be freely put into and taken out of the water storage tank and travels the inner bottom, the cleaning robot part and the suction pump are used. A sediment separating unit that separates and removes the sediment that is connected by suction hose and transported by suction, and an operation unit that monitors and controls the running and cleaning operations of the cleaning robot unit.

JP 2006-217822 A Japanese Patent No. 3955192 JP 2011-160695 A JP 2001-29910 A

The conventional means for removing sediment in water is to remove the water in the aquarium for raising or aquaculture of fish (aquarium water) in order to extract the water in the aquarium together with the sediment in the water such as residual food and feces. There are many.
In addition, when extracting the sediment in water, a strong water flow is generated in the aquarium, which may adversely affect fish culture. In particular, it has a great influence when removing residual food and feces in a short time (for example, 10 to 30 minutes).
Furthermore, since the underwater sediment is extracted from a part of the bottom of the water tank, the removal of the underwater sediment tends to be incomplete.

  For example, in the apparatus of Patent Document 2, food and feces cannot be reliably collected by tilting the bottom of the aquarium. Moreover, since it collects on a belt conveyor and then delivers and collect | recovers several apparatuses, it becomes a complicated structure as a whole. Furthermore, in the microscreen, since the fountain is fountained from the side on which the food and feces are placed, in order for the food and feces to be washed away, they must pass through the microscreen, and large particles may not be washed.

  The present invention has been developed to solve the above-described problems. That is, the object of the present invention is to remove the sediment in water consisting of residual food and feces in a short time (for example, 10 to 30 minutes). It is an object of the present invention to provide a fish tank system that does not generate a strong water flow, has little adverse effect on fish, and requires less maintenance.

According to the present invention, an aquarium that holds aquarium water inside and rears or cultivates fish,
A water-permeable capturing cloth that is stretched along the bottom surface of the water tank and captures an underwater sediment composed of residual food or feces,
With the capture cloth stretched on the bottom surface, a part of the capture cloth moving device that removably moves to the outside along the inner wall of the water tank,
There is provided a fish tank facility comprising: a capture cloth cleaning device that removes sediment in water captured by the capture cloth and cleans the capture cloth outside the tank.

  The said capture | acquisition cloth has an eye of the magnitude | size which can capture | acquire sediment in water and fish cannot pass through.

According to an embodiment of the present invention, the capture cloth is an endless belt having a constant width,
The capture cloth moving device is a first belt driving device that guides the endless belt along the bottom surface of the water tank.

The first belt driving device includes a pair of endless chains that are endlessly circulated between the inside and the outside of the water tank at equal intervals in the horizontal direction.
A plurality of pairs of sprockets for guiding the endless chain;
A rotational drive device for rotationally driving the sprocket,
Both ends of the endless belt in the width direction are fixed to the pair of endless chains, respectively.

The first belt driving device has a horizontal guide portion for horizontally guiding the endless belt outside the water tank,
The capture cloth cleaning device includes a first backwashing device that backwashes the endless belt in the horizontal guide portion, and a drainage storage tank that collects the washing water together with the sediment in water.

According to another embodiment of the present invention, comprising a washing tank adjacent to the water tank,
The first belt driving device guides the endless belt into the cleaning tank.

According to another embodiment of the present invention, the capture cloth is a long belt having both end portions and a constant width,
The capture cloth moving device is a second belt driving device that guides the long belt along the bottom surface of the water tank.

The second belt driving device includes a plurality of guide rollers for guiding the long belt between the inside and the outside of the water tank,
A pair of winding devices capable of rewinding the both ends of the long belt, respectively, outside the water tank.

  The capture cloth cleaning device includes: a second backwashing device for backwashing the long belt by jetting washing water outward from a winding shaft of the winding device; and a drainage for collecting the washing water together with sediment in water. And a storage tank.

According to another embodiment of the present invention, comprising a washing tank adjacent to the water tank,
The second belt driving device guides the long belt into the cleaning tank.

  According to the above configuration of the present invention, the water-permeable capturing cloth that captures the underwater sediment composed of residual food or feces is spread along the bottom surface of the aquarium, so that the underwater sediment is reliably placed on the capturing cloth. Can be captured.

  In addition, the capture cloth moving device moves part of the catch cloth along the inner wall of the aquarium so that it can be returned to the outside while being stretched on the bottom surface. Can be removed. In addition, this configuration can reduce the remaining of sediment in the bottom. Furthermore, since the capture cloth moves along the inner wall, a strong water flow does not occur and adverse effects on fish can be reduced.

  Furthermore, although the capture cloth moving device moves the capture cloth to the outside, since the capture cloth is water permeable, the aquarium water falls from the capture cloth and returns to the aquarium, so that the discharge of the aquarium water can be reduced.

  In addition, outside the water tank, the capture cloth cleaning device removes sediment from the water trapped in the capture cloth and cleans the capture cloth, so the capture cloth is clogged and can be used repeatedly, requiring maintenance. Can be reduced.

It is a 1st embodiment figure of the fish tank equipment of the present invention. It is a top view which shows 2nd Embodiment of the fish tank apparatus of this invention. It is a 3rd embodiment figure of the fish tank equipment of the present invention. It is a top view which shows 4th Embodiment of the fish tank equipment of this invention. It is side surface sectional drawing which shows 5th Embodiment of the fish tank equipment of this invention. It is side surface sectional drawing which shows 6th Embodiment of the fish tank equipment of this invention.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In addition, the same code | symbol is attached | subjected to the common part in each figure, and the overlapping description is abbreviate | omitted.

  FIG. 1 is a diagram of a first embodiment of a fish tank facility 10 of the present invention. In this figure, (A) is a side sectional view, and (B) is a plan view seen from above.

  In this figure, a fish tank facility 10 of the present invention includes a water tank 12, a catch cloth 14, a catch cloth moving device 16, and a catch cloth cleaning device 18.

  The aquarium 12 is a breeding aquarium or an aquaculture tank that retains the aquarium water 1 and breeds or cultivates fish. The target fish are mainly fish, but other organisms such as shrimp may be used as long as they are raised or cultivated in water. The aquarium water 1 is seawater or fresh water suitable for the target fish.

In this example, the shape of the water tank 12 is a rectangular shape having a substantially constant width, length, and depth. Note that the present invention is not limited to a rectangular shape, and may be uneven in width, length, and depth, or may be partially inclined or indefinite. For example, the side wall 12b in the side cross-sectional view of FIG. 1A may be inclined such that the bottom portion is deflated and the cross section formed by the bottom surface 12a may be shaped like a trapezoid.
In this example, the size (inner dimensions) of the water tank 12 is 5 to 25 m in length, 2 to 3 m in width, and 2 to 3 m in depth. The present invention is not limited to this size, and may be smaller or larger.

The capture cloth 14 is water permeable and is stretched along the bottom surface 12 a of the water tank 12 to capture the underwater sediment 2 made of residual food or feces.
The capture cloth 14 has an eye (opening) of a size that can capture the underwater sediment 2 and cannot pass fish. The shape of the eye (opening) is a circle, a rectangle, or a mesh. The size of the eyes is, for example, 1 to 5 mm depending on the size of the remaining food or feces.
The material of the capture cloth 14 is preferably a material that has low water absorption, does not deteriorate with water, and does not adversely affect fish, such as nylon, polyethylene, other plastics, proboscis, natural fibers, and the like.

The capture cloth 14 has a structure such as a filter cloth, a fine fish net, a sponge sheet, etc., which can catch the remaining food or feces on the surface and can be bent. You may affix the coarse cloth suitable for capture | acquisition of the underwater sediment 2 on the cloth with intensity | strength.
Further, the capturing cloth 14 is composed of two layers or two or more layers, and arranged on the bottom surface 12a of the water tank 12 so that the eye layer larger than the underwater sediment 2 is on the upper side and the eye layer smaller than that is on the lower side. May be.
With this configuration, it is possible to reliably capture the underwater sediment 2 and reliably prevent its passage.

The capture cloth moving device 16 moves partly along the inner wall (bottom surface 12a and side wall 12b) of the water tank 12 so that the capture cloth 14 is stretched on the bottom surface 12a.
Here, “expanding to the bottom surface 12 a” covers at least a part (preferably most) of the bottom surface 12 a along the bottom surface 12 a of the water tank 12, and does not sag (sag) and is pinned with a predetermined tension. It means the state.

  The capture cloth cleaning device 18 removes the underwater sediment 2 captured by the capture cloth 14 and cleans the capture cloth 14 outside the water tank 12.

In FIG. 1, the capture cloth 14 is an endless belt 14A having a constant width.
The capture cloth moving device 16 is a first belt driving device 17A that guides the endless belt 14A (capture cloth 14) along the bottom surface 12a of the water tank 12.

  In FIG. 1, the first belt driving device 17A has a pair of endless chains 19a, a plurality of pairs of sprockets 19b, and a rotation driving device 19c.

The pair of endless chains 19a are circulated and driven endlessly between the inside and the outside of the water tank 12 at equal intervals in the horizontal direction. In this example, the pair of endless chains 19a are arranged along the inner wall in the width direction of the water tank 12 (upper and lower inner walls in the figure), as shown in FIG.
In FIG. 1 (A), a pair of endless chains 19a move substantially horizontally from left to right along the bottom surface 12a of the water tank 12, and then move upward along the right side wall 12b. The top moves almost horizontally in the figure from right to left, and finally moves downward along the left side wall 12b to return to the original position.
This movement is performed endlessly continuously or intermittently.

In FIG. 1A, a plurality of pairs (four pairs in this example) of sprockets 19b guide the endless chain 19a.
The rotational drive device 19c continuously or intermittently drives one of the sprockets 19b, and continuously or intermittently makes the combination of the endless chain 19a and the capture cloth 14 endless along the inner wall of the water tank 12. Moving.

In this example, both ends of the endless belt 14A in the width direction (upper and lower ends in FIG. 1B) are fixed to a pair of endless chains 19a.
The endless chain 19a is engaged with a total of four sets of sprockets 19b at the bent portion, and one set of the sprockets 19b is driven by a rotary drive device 19c. The capture cloth 14 is stretched over the entire surface so as to pass between the two endless chains 19a.

  An endless wire or an endless rope may be used instead of the endless chain 19a, and a guide pulley may be used instead of the sprocket 19b.

In FIG. 1, the first belt driving device 17 </ b> A has a horizontal guide portion 20 that horizontally guides the endless belt 14 </ b> A outside the water tank 12 (upper part in this example).
The trapping cloth cleaning device 18 includes a first backwashing device 21A that backwashes the endless belt 14A in the horizontal guide portion 20, and a drainage storage tank 22 that collects the washing water 3 together with the underwater sediment 2.

  The aquarium 12 is filled with aquarium water 1 and fishes are bred or cultivated. A feeding device 23 is provided on the water surface above the capture cloth 14 at the bottom, and feed is supplied from there. After the food is eaten by the fish, uneaten leftover food and feces settle on the capture cloth 14 and adhere to the surface of the capture cloth 14 and are captured. Then, by driving the endless chain 19a, the catching cloth 14 moves onto the water surface, and the washing water sprayed by the first backwash device 21A from the upper side (back side) of the catching cloth 14 at a position above the drainage storage tank 22. 3 to wash. By this backwashing, the underwater sediment 2 composed of residual food and feces is removed from the capture cloth 14 and enters the drainage storage tank 22. The underwater sediment 2 accumulated in the drainage storage tank 22 is appropriately discharged and disposed of.

With the configuration of the first embodiment described above, the underwater sediment 2 made up of leftover food and feces can be automatically removed from the aquarium 12 instead of being cleaned by a person. For this purpose, the underwater sediment 2 is not washed away using a large amount of water, but only the underwater sediment 2 can be recovered and removed.
In particular, the capture cloth 14 on which the underwater sediment 2 is placed can be back-washed with the washing water 3 from the outside of the water tank 12 (the back side on the water surface).
Moreover, since the water used is only for back washing of the capturing cloth 14, the discharge of water for washing the underwater sediment 2 can be greatly reduced, leading to cost reduction of fish breeding. Moreover, the labor for cleaning can be reduced.
Furthermore, the apparatus for collecting the underwater sediment 2 is simple and simple, and the underwater sediment 2 captured by the capture cloth 14 is washed from the back side, so that the cleaning efficiency is good.

FIG. 2 is a plan view showing a second embodiment of the fish tank apparatus 10 of the present invention.
In this figure, the configuration of the fish tank system 10 of the present invention is the same as that of the first embodiment, but the capture cloth 14, the capture cloth moving device 16, and the capture cloth cleaning device 18 are not the entire surface of the water tank 12, Only a part (the left end in this example) is covered. The feeding device 23 is preferably installed at the installation position of the fish tank facility 10.
Other configurations are the same as those of the first embodiment.
With this configuration, the upper surface of the aquarium 12 where there is no fish aquarium facility 10 can be opened, and access to the inside of the aquarium 12 is facilitated.

FIG. 3: is 3rd Embodiment figure of the fish tank apparatus 10 of this invention, (A) is side sectional drawing, (B) is the top view seen from the upper part.
In this figure, the fish tank facility 10 includes a cleaning tank 24 adjacent to the water tank 12. The cleaning tank 24 is provided with an air diffuser 24a, and supplies air into the water in the cleaning tank 24 so as to aerate the inside.
In this example, the first belt driving device 17A includes six pairs of sprockets 19b, and guides the endless chain 19a and the endless belt 14A into the cleaning tank.
In this example, the capture cloth cleaning device 18 described above is omitted.
Other configurations are the same as those of the first embodiment.

3A, the water tank 12 is rectangular, and the endless chain 19a moves substantially horizontally from the right to the left along the bottom surface 12a of the water tank 12, and moves upward along the left side wall 12b. It moves in the same direction almost horizontally on the water surface, moves downward at the left end position of the cleaning tank 24 off the water tank 12, and enters a cleaning tank provided separately from the water tank 12. The endless chain 19a, after leaving the cleaning tank 24, moves downward along the left side wall 12b, moves almost horizontally from the left to the right in the drawing along the bottom surface 12a, and reverses to the original position. Return.
This movement is performed endlessly continuously or intermittently.

  The structure and function of the first belt driving device 17A, the water tank 12, the feeding device 23, and the configuration of the capture cloth 14 are the same as those in the first embodiment. The behavior of the bait is the same as that of the first embodiment under the surface of the water. However, the trapping cloth 14 is trapped by the trapping cloth 14 by bubbles from the air diffuser 24a when it enters the washing tank 24 after coming out of the water surface. The bait being separated from the capture cloth 14. Since the peeled food accumulates in the water of the washing tank 24, it is appropriately drained and disposed of.

  With the above-described configuration, the cleaning water 3 for backwashing is not required, and water is further saved than in the first and second embodiments.

FIG. 4 is a plan view showing a fourth embodiment of the fish tank apparatus 10 of the present invention.
In this figure, the fish tank apparatus 10 of the present invention is the same as that of the third embodiment, but the catch cloth 14 and the catch cloth moving device 16 are not the entire surface of the tank 12, but a part thereof (in this example, the left end portion). Only). The feeding device 23 is preferably installed at the installation position of the fish tank facility 10.
Other configurations are the same as those of the third embodiment.
With this configuration, the upper surface of the aquarium 12 where there is no fish aquarium facility 10 can be opened, and access to the inside of the aquarium 12 is facilitated.

FIG. 5 is a side cross-sectional view showing a fifth embodiment of the fish tank apparatus 10 of the present invention.
In this example, the capture cloth 14 is a long belt 14B having both end portions and a constant width. The long belt 14B is different from the above-described endless belt 14A in that both ends are not connected, but the other points are the same.

  The capture cloth moving device 16 is a second belt driving device 17B that guides the long belt 14B along the bottom surface 12a of the water tank 12.

The second belt driving device 17B includes a plurality (two in this example) of guide rollers 26 and a pair of winding devices 27.
The guide roller 26 is a cylindrical member whose shaft center is supported so as to be freely rotatable, and guides the long belt 14 </ b> B between the inside and the outside of the water tank 12.
The pair of winding devices 27 are devices that wind up both ends of the long belt 14B outside the water tank 12, and can be wound and rewound by an electric motor.

  With this configuration, the pair of winding devices 27 are synchronized, wound on one side, and rewound on the other side, so that the long belt 14B (capture cloth 14) is stretched on the bottom surface 12a and the long belt 14B is stretched. By alternately changing the moving direction, a part of the moving direction can be moved back to the outside along the inner wall of the water tank 12 (reversible).

In FIG. 5, the capture cloth cleaning device 18 includes a second backwashing device 21 </ b> B that ejects the cleaning water 3 outward from the winding shaft of the winding device 27 to backwash the long belt 14 </ b> B, and the cleaning water 3 in the water. And a drainage storage tank 22 for recovery together with the sediment 2.
In this example, the capturing cloth cleaning device 18 is provided in each of the pair of winding devices 27, but only one of them may be provided.

  With this configuration, the long belt 14B can be backwashed with the washing water 3 by the second backwashing device 21B, and the underwater sediment 2 can be appropriately discharged and disposed.

FIG. 6 is a side sectional view showing a sixth embodiment of the fish tank apparatus 10 of the present invention.
In this figure, the fish tank facility 10 includes a cleaning tank 24 adjacent to the water tank 12. The cleaning tank 24 is provided with an air diffuser 24a, and supplies air into the water in the cleaning tank 24 so as to aerate the inside.
In this example, the second belt driving device 17B includes five guide rollers 26, and guides the long belt 14B into the cleaning tank.
In this example, the capture cloth cleaning device 18 described above is omitted.

  According to the configuration of the present invention, the water-permeable capturing cloth 14 that captures the underwater sediment 2 made of residual food or feces is stretched along the bottom surface 12a of the water tank 12. Can be captured on a capture fabric.

  Moreover, since the capture cloth moving device 16 moves partly along the inner wall of the water tank 12 so as to be able to return to the outside while the capture cloth 14 is stretched on the bottom surface 12a, an underwater sediment composed of residual food and feces. 2 can be removed in a short time (for example, 10 to 30 minutes). In addition, this configuration can reduce the remaining of the underwater sediment 2 at the bottom. Furthermore, since the capture cloth 14 moves along the inner wall, no strong water flow is generated, and adverse effects on fish can be reduced.

Furthermore, the capture cloth moving device 16 moves the capture cloth 14 to the outside. However, since the capture cloth 14 is water permeable, the aquarium water 1 falls from the capture cloth 14 and returns to the aquarium, and discharge of the aquarium water 1 is performed. Compared with frequent exchange and spilling of water in the water tank 12, water can be saved significantly.
In addition, food is expelled out of the aquarium quickly before it rots, so it consumes oxygen, becomes a source of pathogenic bacteria, and pollutes surrounding water with organic substances and nutrients eluted from the food. The occurrence of problems can be prevented.

  Moreover, since the capture cloth washing | cleaning apparatus 18 removes the underwater sediment 2 caught by the capture cloth 14, and wash | cleans the capture cloth 14 in the exterior of the water tank 12, clogging is removed and the capture cloth 14 is used repeatedly. And the need for maintenance can be reduced.

  In addition, this invention is not limited to embodiment mentioned above, is shown by description of a claim, and also includes all the changes within the meaning and range equivalent to description of a claim.

DESCRIPTION OF SYMBOLS 1 Aquarium water, 2 Submerged sediment, 10 Fish aquarium equipment, 12 Aquarium, 12a Bottom surface, 12b Side wall, 14 Capture cloth, 14A Endless belt, 14B Long belt, 16 Capture cloth movement apparatus, 17A 1st belt drive apparatus, 17B 1st 2 belt drive device, 18 catch cloth washing device, 19a endless chain, 19b sprocket, 19c rotation drive device, 20 horizontal guide, 21A first backwash device, 21B second backwash device, 22 drainage storage tank, 23 feeding device 24 Cleaning tank 24a Air diffuser 26 Guide roller 27 Winding device

Claims (10)

An aquarium that holds aquarium water and raises or cultivates fish;
A water-permeable capturing cloth that is stretched along the bottom surface of the water tank and captures an underwater sediment composed of residual food or feces,
With the capture cloth stretched on the bottom surface, a part of the capture cloth moving device that removably moves to the outside along the inner wall of the water tank,
A fish aquarium facility comprising: a capture cloth cleaning device that removes sediment in water captured by the capture cloth and cleans the capture cloth outside the aquarium.   The fish tank system according to claim 1, wherein the catch cloth has an eye size that can catch sediment in water and cannot pass through fish. The capture cloth is an endless belt having a constant width,
The fish tank system according to claim 1, wherein the capture cloth moving device is a first belt driving device that guides the endless belt along a bottom surface of the tank. The first belt driving device includes a pair of endless chains that are endlessly circulated between the inside and the outside of the water tank at equal intervals in the horizontal direction.
A plurality of pairs of sprockets for guiding the endless chain;
A rotational drive device for rotationally driving the sprocket,
The fish tank apparatus according to claim 3, wherein both ends of the endless belt in the width direction are fixed to the pair of endless chains, respectively. The first belt driving device has a horizontal guide portion for horizontally guiding the endless belt outside the water tank,
The said capture | acquisition cloth washing | cleaning apparatus has the 1st backwashing apparatus which backwashes the said endless belt in the said horizontal guide part, and the drainage storage tank which collect | recovers washing water with a sediment in water. Fish tank equipment according to 3 or 4. A cleaning tank adjacent to the water tank;
The fish tank apparatus according to claim 3 or 4, wherein the first belt driving device guides the endless belt into the cleaning tank. The capture cloth is a long belt having both ends and a constant width,
The fish tank system according to claim 1, wherein the capture cloth moving device is a second belt driving device that guides the long belt along a bottom surface of the tank. The second belt driving device includes a plurality of guide rollers for guiding the long belt between the inside and the outside of the water tank,
The fish tank apparatus according to claim 7, further comprising a pair of rewindable winding devices that winds both ends of the long belt, respectively, outside the tank.   The capture cloth cleaning device includes: a second backwashing device for backwashing the long belt by jetting washing water outward from a winding shaft of the winding device; and a drainage for collecting the washing water together with sediment in water. The fish tank facility according to claim 8, comprising a storage tank. A cleaning tank adjacent to the water tank;
The fish tank apparatus according to claim 7, wherein the second belt driving device guides the long belt into the cleaning tank.

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