JPH07115869A - Automatic feeding method and automatic feeding device - Google Patents

Abstract

PURPOSE:To provide a method for automatically supplying a feed, capable of smoothly supplying the air bubble-free feed to an arbitrary place at an arbitrary depth in water. CONSTITUTION:This method for automatically supplying a feed comprises carrying the feed 10 with air, charging the air-carried feed 10 on the surface of water in a feed-supplying pipe 2 at such a rate as producing bubbles on the surface of the water, the tip 21 of the feed-supplying pipe 2 being set at a desired depth in the water, discharging the air from an air-discharging port 3 placed on the upper side from the vertically moving surface of the water in the feed-supplying pipe 2, precipitating the feed 10 along the feed-supplying pipe 2, and subsequently allowing the feed to flow from the tip 21 into the water.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic feeding method for automatically feeding powdered and granular bait to an arbitrary depth in water at an arbitrary place, and an automatic feeding apparatus for carrying out the method.

[0002]

[Prior art and its problems] In the fisheries business,
The fish breeding business using the automatic feeding device is promoted, but it still has many problems. For example, in the case of breeding flounder or deep-sea tie, pheasant grouper, pufferfish, etc. that grow on the seabed in the ocean, if you feed powdery granules with a particle size of several mm to several cm from the sea surface, the net cage In the case of tidal current, in the case of marine ranch, (i) the fish that emerged for feeding is eaten by other large carnivorous fish,
(ii) There is a problem that the bait is deprived of the small fish species that are not bred before the bait sinks to an appropriate depth.

In order to solve the above problem, a feeding buoy as disclosed in, for example, Japanese Patent Laid-Open No. 4-303095 has been proposed. This feeding buoy can feed food at an arbitrary depth below the surface of the water. However, in this feeding buoy, since the food is stored in the upper part, it is troublesome that the feeding work and the replacement work of the feeding buoy must be performed up to the installation position of the feeding buoy.

On the other hand, when a powdery or granular food is put into the water from the atmosphere, air bubbles adhere to the food, but when air bubbles adhere to the food, the following problems occur. (1) It becomes difficult to systematically feed the fish due to the slow sedimentation speed of the food. (2) The fish may feel full before eating enough food and become stunted. The above-mentioned feeding buoy cannot solve such a problem.

In addition, in the method of naturally precipitating the bait in a submerged straight pipe, when a large amount of bait having a relatively slow settling speed is fed, the bait absorbs seawater and increases in volume, thereby clogging the straight pipe. There was a fear that In order to avoid this, it was necessary to make the diameter of the straight pipe sufficiently large.

[0006]

OBJECT OF THE INVENTION The present invention provides a bait free from air bubbles,
An object of the present invention is to provide an automatic feeding method capable of smoothly supplying water to an arbitrary depth in an arbitrary place, and an automatic feeding device for carrying out the method.

[0007]

[Means for Achieving the Object] The automatic feeding method of the present invention comprises feeding the feed pneumatically to the water surface in a feeding pipe whose tip is set to a desired depth in water, and feeding the fed air food to the water surface. It is introduced at a speed such that bubbling occurs, and air is exhausted through an exhaust part located upstream of the vertically moving water surface in the feeding pipe, and when the water surface is at the highest level, from the first exhaust part, At least 1st when the water surface is at the lowest level
And the second exhaust unit, and the feed is allowed to settle in the feeding pipe and flow out into the water from the tip.

The automatic feeding apparatus of the present invention is directly connected to a transportation pipe for pneumatically transporting food, and has a feeding pipe whose tip outlet is set at an arbitrary depth position, and an exhaust portion provided in communication with the feeding pipe. ,
It comprises a feeding pipe and a floating body for floating the exhaust part, and the exhaust part is
The first exhaust part located upstream of the water surface when the water surface that fluctuates up and down in the feeding pipe during air transportation of the food is at the highest level, and the upstream side of the water surface when the water surface is also at the lowest level. And at least a second exhaust part located downstream of the first exhaust part, wherein the first exhaust part is the second exhaust part.
It is characterized by being narrower than the exhaust section.

[0009]

Since at least the first exhaust portion and the second exhaust portion are provided, even if the water surface fluctuates vertically due to pressure fluctuations in the feeding pipe at the time of feeding the bait, the air is reliably exhausted.

Moreover, the exhaust is smoothly performed, and the water surface in the feeding pipe is stable. That is, in order to obtain a wind speed of 20 m / s, which is necessary for bubbling, a large amount of air is required, and the first exhaust part is not sufficient to exhaust this, and the water surface immediately comes from the second exhaust part. Go down to a position where you can exhaust. At this time, since the first exhaust part is away from the water surface, no water flows into the first exhaust part, and only the air is efficiently exhausted from the first exhaust part according to the pressure in the feeding pipe. Although some water flows into the second exhaust part, the inflow of water is small because the vertical movement of the water surface is suppressed, and the inflowing water does not form a water column and enters the inner surface of the pipe of the second exhaust part. Ascends along with smooth exhaust and drainage at the same time.

Since the bait is pneumatically transported, the bait replenishment / exchange work becomes easy.

By bubbling on the surface of the water, the food becomes compatible with the water and naturally sinks due to its own weight. Therefore, air bubbles do not adhere to the bait.

Since the tip of the feeding tube is set to a desired depth, the food is fed at a desired depth.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic cross-sectional view showing an automatic feeding device for carrying out the automatic feeding method of the present invention. This automatic feeding device 1
Is provided with a feeding tube 2, an exhaust unit 3, and a floating body 4.
A transport pipe 5 is connected to the upper end of the feeding pipe 2. The other end of the transport pipe 5 is connected to a bait 10 and an air supply source (not shown). The exhaust part 3 includes an exhaust main 31 and an exhaust main 3.
It is composed of a first branch pipe 32 and a second branch pipe 33 communicating with 1. The other end of the exhaust main pipe 31 is open to the atmosphere. The floating body 4 is provided so that it holds the transport pipe 5 and the two exhaust main pipes 31 and the feeding pipe 2 stands vertically. For example, the feeding pipe 2 and the exhaust unit 3 are made of vinyl chloride resin, and the floating body 4 is made of resin-coated polystyrene foam.

In the exhaust unit 3, the first branch pipe 32 is on the water surface A.
The second branch pipe 33 communicates with the feeding pipe 2 on the upstream side.
Is connected to the feeding pipe 2 on the upstream side of the water surface B and on the downstream side of the first branch pipe 32. The first branch pipe 32 is the second branch pipe 3
It is thinner than 3. The water surface A has a minimum air volume required for stable transportation of the bait 10
Is set to the water level when it is supplied into the feeding pipe 2, and the water surface B is set to the water level when it becomes the lowest due to the pressure fluctuation in the feeding pipe 2 thereafter.

The feeding tube 2 is set so that the tip 21 has a desired depth D. In addition, in the feeding tube 2, a wire net 6
Is provided. The wire net 6 is in the shape of a cylinder that widens toward the end, the upper end of which is connected to the lower end of the transport pipe 5, and the lower end 61 is set at the position of the tip 21 of the feeding pipe 2. The mesh size of the wire net 6 is set smaller than the particle size of the bait 10.

The automatic feeding method using the above automatic feeding device 1 is carried out as follows. First, the automatic feeding device 1 is installed in a net cage or an ocean ranch at an arbitrary place where feeding is desired, and is installed on land or on the sea. Connect with. Next, the bait 10 is pneumatically transported to the feeding pipe 2 through the transportation pipe 5, and the bait 10 is thrown into the water surface in the feeding pipe 2. At this time, the water level changes from surface A to surface C
The air flows into the first branch pipe 32 and is discharged. The feeding speed of the bait 10 on the water surface is set to a speed at which bubbling occurs on the water surface. For example, it is set to 20 m / s or more. When the feeding of the bait 10 is continued, the first branch pipe 32 is thin and a change in the air volume of the air transportation causes a pressure change in the feeding pipe 2, so that the water level drops to, for example, the lowest water surface B. When the bait 10 is thrown into the water surface B, the air also flows into the second branch pipe 33 and is discharged.

While the water level is between the water surface A and the water surface C, the air is surely discharged through the first branch pipe 32 and the exhaust main pipe 31, and while the water level is on the water surface B, the air is discharged first. Two
It is also reliably discharged through the branch pipe 33. That is, the first branch pipe 32 is provided upstream of the water surface A, and the second branch pipe 33 is provided upstream of the water surface B and downstream of the first branch pipe 32.
Since the first branch pipe 32 is thin and a pressure change occurs in the feeding pipe 2 due to a change in the air flow rate of air transportation, the feeding 10 can be performed while reliably discharging the air. Moreover, since the first branch pipe 32 is formed thin, the wind velocity in the exhaust main pipe 31 becomes high, and even if the water splashed by bubbling flows into the first and second branch pipes 32, 33, it is It is discharged from the exhaust main pipe 31 into the atmosphere.

The bait 10 put on the surface of the water is adapted to the water by bubbling, and naturally settles due to its own weight, and moves downward in the wire net 6 in the feeding pipe 2 to move to the wire net 6 of the wire net 6. It flows out from the tip 61 into the water. Since the tip 61 is set to the depth D like the tip 21 of the feeding tube 2, the bait 10 is fed to a desired depth. Further, since the bait 10 is bubbled and soaked in water, bubbles do not adhere to the bait 10.

By bubbling the bait 10 on the water surface in the feeding pipe 2, a part of the bait 10 bounces, and
Even if the bait 10 flies toward the inlet of the first branch pipe 32 or the second branch pipe 33 by the suction action based on the high-speed air being discharged from the branch pipe 32 or the second branch pipe 33, the wire mesh Since 6 serves as a barrier, the bait 10 is used as the first branch pipe 32 and the second branch pipe 3
It does not flow into 3. Therefore, the bait 10 is not discharged through the exhaust unit 3. In addition, the bait 10 will not be clogged in the exhaust part 3 and the exhaust cannot be exhausted.

FIG. 2 is a schematic sectional view showing another automatic feeding device 1a. This automatic feeding device 1a is the same as the automatic feeding device 1 of FIG. 1 except that the exhaust main pipe 31 upstream of the first branch pipe 32 is omitted. When this automatic feeding device 1a is used, when the bait 10 is pneumatically transported through the transportation pipe 5 to start feeding, air is discharged from the upper end 31a of the exhaust main pipe 31. For this reason, a sound is generated in water due to the discharge of air. That is, in the case of feeding, a sound is always generated, and if the sound is generated, the fish comes closer to the automatic feeding device 1a for feeding, that is, the effect of acclimatizing the fish. As a result, the fish will be fed without waste.

The transportation pipe 5 and the exhaust main pipe 31 are connected to the floating body 4.
Alternatively, it may be provided so as to be vertically movable. According to this
It is possible to easily set the depth positions of the feeding tube 2 and the exhaust portion 3 from above the floating body 4. The transport pipe 5 and the exhaust unit 3 can be provided so as to be movable up and down by being made of a soft material such as soft nylon resin or urethane resin.

Further, the metal net 6 does not necessarily have to be provided. Further, one or a plurality of branch pipes may be provided between the first branch pipe 32 and the second branch pipe 33.

[0024]

【The invention's effect】

(1) According to the automatic feeding method of claim 1, the following effects can be obtained. (a) Since at least the first exhaust part (first branch pipe 32) and the second exhaust part (second branch pipe 33) are used to exhaust gas, even if pressure fluctuation occurs in the feeding pipe 2, The bait 10 can be charged while reliably discharging the air.

(B) Since the bait 10 is sent to the automatic feeding device by pneumatic transportation, the replenishment / exchange work of the bait 10 can be performed from a remote place to the automatic feeding device. Therefore, bait 10
The replenishment and replacement work can be done easily.

(C) Since the bait 10 is sent to the automatic feeding device by pneumatic transportation, even if the automatic feeding device is installed in a place where it cannot be easily approached, no big trouble occurs.

(D) By setting the tip 21 of the feeding tube 2 to a desired depth, the bait 10 can be fed at a desired depth.

(E) Since the bait 10 is bubbled on the surface of the water so as to be compatible with water, it is possible to prevent bubbles from adhering to the bait 10. Therefore, planned feeding based on the sedimentation rate can be performed. In addition, it is possible to prevent the fish from feeling full before eating enough food, and to prevent the fish from developing failure.

(F) If a small amount of air is constantly flowed into the transport pipe 5, the inside of the feed pipe 2 and the transport pipe 5 can be maintained in a dry state at all times. It is possible to prevent marine organisms such as algae from adhering and propagating in the transport pipe 5.

(2) According to the automatic feeding method of the second aspect, the air can be reliably discharged.

(3) According to the automatic feeding method of the third aspect, it is possible to generate a sound in the water due to the discharge of air, exhibit an acoustic acclimatizing effect on the fish, and feed without waste. Can be done.

(4) According to the automatic feeding method of the fourth aspect, it is possible to reliably prevent the bait 10 from flowing into the exhaust section 3. Therefore, it is possible to prevent the exhaust unit 3 from being clogged and becoming unable to exhaust.

(5) The automatic feeding device according to the fifth aspect may be provided with the feeding pipe 2, the exhaust part 3, and the floating body 4,
Since the structure is simple, it is inexpensive and there are few failures. That is, the automatic feeding method according to claim 1 can be implemented economically and reliably.

Also, since most of the devices are submerged in water, the automatic feeding device does not sway significantly even in the sea, and it is possible to perform the same feeding as in the calm state.

(6) According to the automatic feeding device of the sixth aspect, the automatic feeding method of the second aspect can be reliably implemented.
That is, the air can be reliably discharged.

(7) According to the automatic feeding device of the seventh aspect, the automatic feeding method of the third aspect can be reliably implemented.
That is, the effect of accustoming the sound to the fish can be exhibited.

(8) With the automatic feeding device according to the eighth aspect, the automatic feeding method according to the fourth aspect can be reliably implemented.
That is, it is possible to reliably prevent the bait 10 from flowing into the exhaust unit 3.

(9) According to the ninth aspect of the automatic feeding device, the depth positions of the feeding pipe 2 and the exhaust portion 3 can be easily set from above the floating body 4.

[Brief description of drawings]

FIG. 1 is a schematic cross-sectional view showing an automatic feeding device for carrying out the automatic feeding method of the present invention.

FIG. 2 is a schematic cross-sectional view showing another automatic feeding device for carrying out the automatic feeding method of the present invention.

[Explanation of symbols]

 2 Feeding pipe 3 Exhaust part 10 Bait 21 Tip 32 First branch pipe (first exhaust part) 33 Second branch pipe (second exhaust part)

Claims (9)

[Claims] 1. An automatic feeding method for automatically feeding powdered and granular food to an arbitrary depth in water at an arbitrary location, wherein the food is pneumatically transported and a tip is set to a desired depth in water. On the water surface in the pipe,
Pour the air-transported bait at a speed that causes bubbling on the water surface, and let the air be exhausted through an exhaust unit located upstream of the vertically moving water surface in the feeding pipe, with the water surface at the highest level. It is characterized by exhausting from the first exhaust part when the water level is at least, and from at least the first and second exhaust parts when the water surface is at the lowest level, causing the food to settle in the feeding pipe and flow out into the water from the tip. Automatic feeding method. 2. The automatic feeding method according to claim 1, wherein the air is exhausted to the atmosphere through an exhaust unit. 3. The automatic feeding method according to claim 1, wherein air is exhausted into the water through an exhaust unit. 4. A wire mesh having a mesh size smaller than the grain size of the bait is used, and air is allowed to flow into the exhaust section through the wire mesh.
The described automatic feeding method. 5. An automatic feeding device for automatically feeding powdered and granular bait to an arbitrary depth in water at an arbitrary place, which is directly connected to a transportation pipe for pneumatically feeding the bait and has a tip outlet at an arbitrary depth. It is equipped with a feeding pipe set to a position, an exhaust part provided in communication with the feeding pipe, and a floating body for floating the feeding pipe and the exhaust part.The exhaust part is vertically moved in the feeding pipe during pneumatic transportation of food. When the fluctuating water surface is at the highest level, it is located upstream from the water surface, and when the water surface is at the lowest level, it is located upstream from the water surface and downstream from the first exhaust area. An automatic feeding device, characterized in that the first exhaust part is narrower than the second exhaust part. 6. The automatic feeding device according to claim 5, wherein the outlet of the exhaust unit is open to the atmosphere. 7. The automatic feeding apparatus according to claim 5, wherein the outlet of the exhaust unit is opened in water. 8. The automatic feeding device according to claim 5, wherein a wire mesh is provided in the vicinity of the inlet of the exhaust unit, and the opening size of the wire mesh is set to be smaller than the grain size of the bait. 9. The automatic feeding device according to claim 5, wherein the feeding pipe and the exhaust portion can move up and down with respect to the floating body.