JP4242875B2 - Sediment eliminator in aquarium and aquaculture equipment using the same - Google Patents

Description

  The present invention relates to a sediment removing device that moves to a predetermined location in order to exclude sediment accumulated in a groove on the bottom of a water tank, and an aquaculture device for cultivating marine products such as fry and shrimp in the water tank.

There are marine and terrestrial aquaculture methods for culturing marine products such as fry and shrimp, and in either method, aquaculture is often carried out at high density. There is a problem that sediments such as carcasses and food leftovers easily accumulate.
As a proposal for this problem, Patent Literature 1 describes an aquaculture device in which an underwater belt conveyor for transporting precipitates to a predetermined location is provided on the bottom of the water tank, and a gradient is provided on the bottom of the water tank toward the underwater belt conveyor. ing. Further, in the aquaculture device of Patent Document 1, a plurality of artificial seaweeds are suspended so that the lower end reaches the bottom of the aquarium in order to eliminate the stress of marine products due to high-density aquaculture, and waves are generated in the aquarium by the wave generator. In addition, oxygen is supplied to the water in the water tank by the oxygen supply device.
JP 2003-23914 A

The marine product culture device of Patent Document 1 is not particularly problematic when it is carried out.
However, an object of the present invention is to provide a sediment removal device different from Patent Document 1 as a means for moving to a predetermined location in order to eliminate the sediment accumulated on the bottom of the water tank. It is to provide an aquaculture device equipped.

  In the present invention, in order to eliminate the sediment accumulated in the groove formed on the bottom surface of the water tank, the apparatus moves to a predetermined location, and a main body provided with traveling wheels so as to be able to travel inside the groove; A plate-like member pivotally attached to the front end of the main body portion so as to rotate until the lower end side comes into contact with the bottom surface of the groove; a cord-like body hooked on the plate-like member; Traction means for pulling the cord-like body to travel in any direction, and the plate-like member has a lower end side on the bottom surface of the groove when the body portion is pulled by the traction means to travel in the forward direction. Abutting and scraping deposits, moving to a predetermined location in the groove, conversely, when pulling the cord-like body to run the main body backward, a gap is created between the lower end side and the bottom surface of the groove In the water tank, which is pivotally attached to the main body. Apparatus is provided.

  Further, in the present invention, a groove extending in a substantially straight line is provided on the bottom surface of the aquarium for culturing marine products such as fry and fry shrimp, and the groove is moved to a predetermined place to eliminate the precipitate. In the aquaculture device provided with the exclusion means, the sediment exclusion means includes a main body portion provided with a traveling wheel so as to be able to travel in the groove, and a lower end side pivotally attached to a front end of the main body portion. A plate-like member provided so as to be rotatable until it comes into contact with the bottom surface of the groove, a cord-like member hooked on the plate-like member and extended to the outside of the water tank through both ends of the groove, and the cord-like member There is provided an aquaculture device characterized by comprising a pulling means provided outside the water tank for pulling the body in either the forward or reverse direction.

In the sediment removing device in the water tank of the present invention, the lower end of the scraper comes into contact with the bottom surface of the groove by the rotation of the scraper on the front end of the main body by pulling the cord-like body in the forward direction of the scraper by the traction means. Travels forward on the bottom of the groove with the main body, scrapes the sediment in the groove, and conversely, pulls the cord-like body backwards by the traction means on the scraper on the front end of the main body. Rotation of the scraper creates a gap between the lower end of the scraper and the bottom surface of the groove, and the scraper travels on the bottom surface of the groove backward together with the main body without pushing back the sediment in the groove with the scraper. together by round trip in the longitudinal direction, it is possible to efficiently collect the precipitate collected in the grooves of the tank bottom to a predetermined point, for example, Bell Compared to the conveying device such as a conveyor, able to labor is much simplified maintenance sediment exclusion device itself, saving energy for it is sufficient to operate only when necessary effects can be obtained. Also sediment displacement apparatus is also an advantage that it is difficult to failure because of the simple structure.

  In the aquaculture apparatus of the present invention, the sediment is efficiently collected and discharged by the sediment removing means, so that deterioration of water is suppressed and the occurrence of fishery disease is suppressed. Also, among the feedings that are carried out several times a day, if the sediment is collected by the sediment exclusion means immediately before the predetermined number of feedings, it becomes possible to grasp the amount of food left by the seafood, It is possible to determine an appropriate feeding amount.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings, but the present invention is not limited thereto.

FIG. 1 is a plan view of an aquaculture equipment 10 according to the present invention.
The aquaculture equipment 10 is used for breeding from juvenile shrimp to parent shrimp in fresh water or artificial seawater, and includes an aquaculture tank 11, a wave generator 12, and a water purification unit 13. It is provided inside the structure.
2 is a cross-sectional view of the aquaculture facility 10 of FIG. 1 cut along the line AA, FIG. 3 is a cross-sectional view cut along the line BB, and FIG. 4 is a cross-section cut along the line CC. FIG.
1 to 4, the aquaculture tank 11 is formed in a rectangular shape having a planar shape of about 1240 × 4000 cm, curb stones 14 a are provided on both sides, and a front wall 14 b and a rear wall 14 c are provided on the front and rear ends. ing. The aquaculture tank 11 is provided with a groove 15 extending in the long side direction at a central water depth of about 270 cm, and a sediment removing device 20 (see FIG. 5) is installed in the groove 15. By the deposit removing device 20, the deposit is carried to the vicinity of the front wall 14b in the groove 15, that is, to the groove front end 15b. The water tank bottom surfaces 11a and 11b are formed so as to incline in the directions of arrows S1 and S2 toward the groove 15, and the water tank bottom surfaces 11a and 11b are provided with concrete ribs 16 on the leveled ground surface. A heat insulating material such as polystyrene foam is laid on the ground surface between them, and a waterproof sheet 17 is laid on the heat insulating material.

The wave making device 12 includes a wave making water tank 12a and a wave receiving water receiving surface 12b, and the water purification unit 13 includes a water collecting tank 13a, a bio purifying tank 13b, a distribution tank 13c, and a sedimentation tank 13d. Since the wave making device 12 and the water purification unit 13 are configured by conventional means described in Patent Document 1, detailed description will be omitted and will be briefly described.
The wave making device 12 generates a wave due to a water head difference between the water surface of the wave making water tank 12a and the water surface of the aquaculture water tank 11, and when a predetermined amount of water is stored in the wave making water tank 12a, water is supplied to the receiving surface 12b from here. Is released, and the waves are generated in the aquaculture tank 11 by flowing down into the aquaculture tank 11.
In the water purification unit 13, the water collection tank 13a is for sterilizing fungi contained in the contaminated water in the tank. The bio septic tank 13b is provided with a thin plate material called a bio filter, and purifies the water by decomposing remaining fungi and dust with microorganisms by passing contaminated water flowing from the distribution tank 13c along the bio filter. It is. The sedimentation tank 13d is for separating the sediment excluded from the aquaculture water tank 11 into water and sludge.
Between the water collection tank 13 a and the aquaculture tank 11, means such as a filter for removing precipitates in the aquaculture tank 11 are provided. The precipitate moved to the groove front end 15b is further carried to a means such as a filter by a conventional submersible pump or an air lift, and is taken up on the water and led to the precipitation tank 13d.
In addition, although not shown in the figure, in the aquaculture tank 11, a plurality of artificial seaweeds are suspended at a predetermined interval, and the lower ends thereof are brought into contact with the aquarium bottom surfaces 11a and 11b, while not being brought into contact with the sediment removing device 20. The As the artificial seaweed, a conventional artificial seaweed as described in Patent Document 1 is used and suspended in the aquaculture tank 11 by conventional means.

Next, the sediment removing apparatus 20 will be described with reference to FIGS. 5 and 6.
The sediment removing device 20 includes a main body 21, a scraper 22 (plate-like member), ropes 23 and 24 (cord-like body), and winches 25 and 26 (traction means) as main components. .

  The main body 21 is formed with side walls 21a that are raised relatively low on both sides, wheels 21b are attached to two locations on the outer surface of each side wall 21a, and wheels 21d are also attached to the bottom surface 21c at four locations. Yes. The wheel 21d on the bottom surface 21c is for traveling on the bottom surface 15a of the groove 15, and the wheel 21b on the side wall 21a is for guiding the main body 21 and the scraper 22 so as not to contact the side surface 15b of the groove 15. It is. Also, a bracket 21e is erected in the vicinity of the front end of the main body 21, and a stopper 21f is provided on the bracket 21e. The stopper 21f defines the range of rotation of the scraper 22 to the rear as shown in FIG. To do.

  The scraper 22 has a flange 22a projecting on the back surface, and the flange 22a is pivotally attached to a bracket 21e of the main body 21 with bolts, nuts, or the like. The scraper 22 is bent at the lower end side 22 b, and the lower end side 22 b comes into contact with the bottom surface 15 a of the groove 15 to scrape the precipitate. Further, an upper end wall 22c is formed on the upper end of the scraper 22, and side walls 22d are formed on both sides, and a portion surrounded by the upper end wall 22c and the side wall 22d functions as a sediment containing portion 22e. The deposited precipitate is stored in the accommodating portion 22e and is carried to a predetermined location. The scraper 22 is provided with a handle 22f extending from the vicinity of the upper end of the front surface to the bracket 21e. As shown in FIG. 5B, ropes 23 and 24 are engaged with the two positions of the handle 22f.

  The ropes 23 and 24 extend from the handle 22f of the scraper 22 in both front and rear directions along the groove 15 as shown by the one-dot chain line in FIG. 2, and are provided on the front wall 14b and the rear wall 14c of the aquaculture tank 11. It reaches the outside of the aquaculture tank 11 via a pulley 18 and further extends to winches 25 and 26 via another pulley 18. These winches 25 and 26 are configured such that when one of them winds the ropes 23 and 24, the other can unwind the ropes 23 and 24. Therefore, the main body 21 and the scraper 22 are configured to be able to travel in the P1 direction or the P2 direction in the groove 15 by being pulled by the winches 25 and 26 through one of the ropes 23 and 24, respectively. .

In FIG. 6, the scraper 22 is pulled in the direction of the arrow P <b> 1 by the rope 23, and the scraper 22 is rotated by this pulling force, and the lower end side 22 b abuts against the bottom surface 15 a of the groove 15. When the main body 21 is pulled in the direction of arrow P1 in this contact state, the lower end side 22b of the scraper 22 scrapes off the precipitate in the groove 15, and accumulates the precipitate in the accommodating portion 22e and pushes it to a predetermined location. it can.
On the other hand, in FIG. 5B, the scraper 22 is pulled in the direction of the arrow P2 by the rope 24, and stops rotating with the bracket 21e in contact with the stopper 21f. At this time, since a gap 27 is formed between the lower end side 22b and the bottom surface 15a of the groove 15, the lower end side 22b of the scraper 22 is also pulled when the main body 21 is pulled and traveled in the direction of the arrow P2. Pushing the precipitate back in the direction of arrow P2 is prevented.

Next, the operation of the aquaculture farm 10 will be described.
In the aquaculture farm 10, for example, when a wave is generated in the aquaculture tank by the wave generator 12 or the like, the artificial seaweed swings, and the lower end of the artificial seaweed is in contact with the bottom surface of the aquaculture tank. Sediment such as seafood excrement, shells, carcasses, and uneaten food left on the bottom is moved by the artificial seaweed and led to the bottom slope to reach the groove 15. The sediment guided to the groove 15 in this way is carried by the sediment removing device 20 to the vicinity of the front wall 14b, that is, to the groove front end 15b. At the front end 15b of the groove, the sediment is pulled up by a conventional submersible pump, air lift, or the like, and after the solid matter is removed by means such as a filter, it is processed in the water purification unit 13.
In the aquaculture equipment 10 according to the present invention, the sediment is efficiently collected and discharged by the sediment eliminating device 20, so that the deterioration of water is suppressed and the occurrence of fishery disease is suppressed.
In the present invention, the means for guiding the sediment to the groove 15 in the aquaculture tank 11 is not limited to the above-described wave generator 12 or artificial seaweed.

It is a top view of the aquaculture apparatus concerning the present invention. It is sectional drawing which cut | disconnected the aquaculture apparatus of FIG. 1 along the AA line. It is sectional drawing which cut | disconnected the aquaculture apparatus of FIG. 1 along the BB line. It is sectional drawing which cut | disconnected the aquaculture apparatus of FIG. 1 along CC line. (A) is a top view of the precipitate removing device, (b) is a side view, and (c) is a rear view partially broken. FIG. 6 is a side view of the precipitate removing device of FIG. 5.

Explanation of symbols

10 Aquaculture equipment (aquaculture equipment)
DESCRIPTION OF SYMBOLS 11 Cultured water tank 11a Water tank bottom 11b Water tank bottom 15 Groove 20 Sediment removal apparatus 21 Main-body part 22 Scraper (plate-shaped member)
23 Rope
24 rope
25 winches (traction means)
26 winches (traction means)

Claims (2)

Is installed in a groove formed in the water tank bottom, a collected precipitate accumulated in the groove a precipitate displacement apparatus in the water tank to move to a predetermined position,
Possible traveling bottom surface of the groove, a main body portion having a car wheel,
A flange made of a plate-like member and projecting from the rear surface of the plate-like member is pivotally attached to a bracket standing on the front end of the main body, and the lower end of the plate-like member is attached to the front end of the main body. A scraper that is rotatably attached between a position where the groove is in contact with the bottom surface of the groove and a position where a gap is formed between the lower end and the bottom surface of the groove ;
It extends along said groove, a cord-like body that will be engaged on the upper end of the scraper,
And pulling means for tensioning pull the cord-like body in the direction of either the front and rear of the scraper,
With
By pulling the cord-like body in the forward direction of the scraper by the pulling means, the lower end of the scraper is brought into contact with the bottom surface of the groove by the rotation of the scraper on the front end of the main body, and the scraper is moved to the main body. Running along the bottom surface of the groove together with the part, scraping off the deposit in the groove with the scraper,
By pulling the cord-like body in the backward direction of the scraper by the pulling means, a gap is formed between the lower end of the scraper and the bottom surface of the groove by the rotation of the scraper on the front end of the main body portion, and the scraper Running backward along the bottom of the groove with the main body without pushing back the deposit in the groove with the scraper,
An apparatus for removing precipitates in a water tank. It provided with a groove extending substantially linearly on the bottom of the water tank for farming marine products such as fry and juveniles, sediment removing means moving the precipitate collected the groove to a predetermined position is placed in fisheries MonoYo-growth apparatus,
The precipitate eliminating means includes
Possible traveling bottom surface of the groove, a main body portion having a car wheel,
A flange made of a plate-like member and projecting from the rear surface of the plate-like member is pivotally attached to a bracket standing on the front end of the main body, and the lower end of the plate-like member is attached to the front end of the main body. A scraper that is rotatably attached between a position where the groove is in contact with the bottom surface of the groove and a position where a gap is formed between the lower end and the bottom surface of the groove ;
It extends along said groove, a cord-like body that will be engaged on the upper end of the scraper,
And traction means for pulling said cord-like body in the direction of either the front and rear of the scraper,
With
By pulling the cord-like body in the forward direction of the scraper by the pulling means, the lower end of the scraper is brought into contact with the bottom surface of the groove by the rotation of the scraper on the front end of the main body, and the scraper is moved to the main body. Running along the bottom surface of the groove together with the part, scraping off the deposit in the groove with the scraper,
By pulling the cord-like body in the backward direction of the scraper by the pulling means, a gap is formed between the lower end of the scraper and the bottom surface of the groove by the rotation of the scraper on the front end of the main body portion, and the scraper Running backward along the bottom of the groove with the main body without pushing back the deposit in the groove with the scraper,
Aquaculture equipment characterized by that.

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