JPH0687720B2 - Feeding device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a feeding device for feeding powdered artificial mixed feed to, for example, fry in a fish tank.

(Prior art and its problems) Conventionally, in a fish tank, it was general to feed manually.

Also, as an automatic feeding device, a storage tank for storing artificial mixed feed, a rotary feeder for cutting out the artificial mixed feed in this storage tank, and an artificial mixed feed cut out by this rotary feeder for blowing out from the short pipe Some were equipped with a blower to feed only the time set by the timer at the set time.

For example, a plurality of fish-cultivating tanks for cultivating fry in the cultivated fishery are usually installed, and the following conditions are necessary to feed the artificial mixed feed in powder form to each of these tanks. That is, the artificial mixed feed is transported from the storage position to each fish tank. This distance is about 10 to 100 m. In addition, a predetermined amount of artificial mixed feed, which has been weighed in advance for each fish tank, is dispersed and dispersed as uniformly as possible over the tank area. This is because in the case of intensive feeding, the amount of feeding for each fry varies and uneven growth occurs, and furthermore, the artificial mixed feed easily sinks to the bottom of the fish tank, and fry can be effectively fed. Not only can they not be given, but they also remain as bait and soil the bottom of the fish tank, which requires a great deal of cleaning work. The feeding frequency is
Give several times to several dozen times per day. Further, the feeding time, the feeding amount per feeding, the feeding time per feeding, etc. are set as appropriate conditions according to the growth of the fry. Especially in the initial stage, it is necessary to spray a small amount of artificial formula feed over a long period of time.

However, in the above-mentioned conventional manual feeding method, it is necessary to feed continuously, including on days with severe weather conditions, and a great deal of labor is required. In addition, there are variations and limits in terms of uniform spraying, or small amount / long time spraying.

Further, in the above-mentioned conventional feeding device, it is impossible to feed a plurality of fish tanks, and a feeding device is required for each fish tank, which is uneconomical. Moreover, the spraying range is limited to the vicinity of the feeding device, and only concentrated spraying is possible. In order to solve this problem, it is conceivable to install a feeding device at each of the four corners of the fish tank, but this is very uneconomical and has a limit in uniformity. It is also possible to install a rail on the fish tank and move the feeding device along the rail, but the cost is enormous and it is unrealistic. In addition, it is necessary to weigh the artificial compound feed in advance and then add it to the storage tank, so that sufficient labor saving cannot be achieved.

In addition, the surroundings of the fish tank are in a high humidity environment, and in the conventional feeding device located near the tank, moisture and water vapor easily enter through the short pipe. As a result, the artificial mixed feed in the short pipe and in the storage tank absorbed moisture, and adhesion and clogging occurred in each part of the device, which was likely to hinder the supply. Furthermore, the artificially mixed feed that has absorbed moisture is apt to undergo oxidative deterioration, and the function of the feed itself may be lost.

Note that, for example, as described in Japanese Utility Model Laid-Open No. 1-137158, an automatic bait sowing machine for transporting baits in a bait box using water or air has been proposed.
Only one type of feed can be fed to multiple feeding points at the same time.

(Purpose of invention) By the way, in the production of juvenile seedlings for cultivation and fishery, fry of several days to several tens of days after hatching to juveniles of several mm to several tens of millimeters in length before release are targeted. Since the amount is extremely small, and excessive administration causes deterioration of water quality and death of fry, it is required to feed a precisely measured and accurate amount. Moreover, since the fry of the fry are weak in swimming ability and only float near the surface of the water, only the food scattered in front of the eyes can be eaten. Therefore, the feed is
It is required to disperse the fine powder in a wide range and evenly. That is, in the production of seedlings of juveniles, a minute (about several hundred μm) artificial compounded feed corresponding to the size of the biological feed is supplied in minute amounts (eg, 10 g / min) evenly and accurately (eg, feed amount of 10 g). ± 1 against
g) Spraying is required.

It is an object of the present invention to provide a feeding device that is particularly suitable for fry seedling production.

(Means for Achieving the Object) In order to achieve the above object, the feeding device of the present invention is a feeding device for feeding a powdered artificial compounded feed from a storage tank by air transportation to convey it to a fish tank. A first supply mechanism for extracting the feed from a plurality of storage tanks 2, 3, 4, ... For storing the feed and pneumatically transporting the feed to the weighing hopper 23.
In the next stage of the weighing hopper 23, the transport hopper 32 for temporarily storing the feed weighed by the weighing hopper 23, and the feed discharged from the transport hopper 32, the fish tank arbitrarily selected by the distributor 43. A second supply mechanism for pneumatic transportation to 49, and the first supply mechanism sucks the feed in the storage tank by the air from the compressed air supply source 38, takes it out, and supplies it to the weighing hopper 23. 27, and the suction force by the ejector 27 is the flow rate adjusting valves 11, 12, 13 ...
Is adjusted by the weighing hopper 23
And, the transport hopper 32 is equipped with weighing devices 29 and 33 for weighing the feeds stored in the hoppers,
In the second supply mechanism, a branch connector 46 that branches the feed into a plurality of fish tanks 49 and a plurality of rotation-type feed nozzles 48 are provided in the next stage of the distributor 43. The second supply mechanism uses the air from the compressed air supply source 38 to distribute the feed discharged from the discharge port of the transport hopper 32 through the rotary valve 34 to the distributor 43, the branch connector 46, and the feeding nozzle. It is adapted to supply the fish to the fish tank 49 through 48, and the first and second supply mechanisms are control devices 50 which receive signals from the weighing devices 29 and 33 as input.
It is characterized by being controlled by.

(Operation) The powdered artificial compounded feed in the arbitrary storage tanks 2, 3, 4, ... Is sucked and taken out by the ejector 27 of the first supply mechanism, and is pneumatically transported to the weighing hopper 23. At this time, the suction force of the ejector 27 is adjusted by the flow rate adjusting valves 11, 12, 13 ... In the weighing hopper 23, the fed feed is precisely weighed by the weighing device 29. Weighing hopper 23
The feed weighed in (1) is temporarily stored in the transport hopper 32. The feed in the transportation hopper 32 is discharged through the rotary valve 34 and is supplied to an arbitrary fish farm 49 selected by the distributor 43 through the branch connector 46 and the plurality of feeding nozzles 48. Since the feeding nozzle is a rotating type, the above-mentioned feed is widely spread.

(Embodiment) An embodiment of the present invention will be described below with reference to FIGS.

FIG. 1 is an overall configuration diagram of a feeding device according to an embodiment of the present invention, in which a plurality of (three in this embodiment) storage tanks 2, 3, 4 installed outside the case 1 of the feeding unit are mutually connected. Different types of artificial mixed feeds are stored in. The lower ends of the storage tanks 2, 3, 4 are connected to pipes 5, 6, 7 via branch pipes 5a, 6a, 7a, and on-off valves 8, 9, 10 are inserted in the branch pipes 5a, 6a, 7a. It is equipped. One ends of the pipes 5, 6, 7 are open to the atmosphere via the flow rate adjusting valves 11, 12, 13, and the other ends of the pipes 5, 6, 7 are connectors 15, 1
It is connected to one ends of pipes 18, 19, 20 via 6, 17. The other ends of the pipes 18, 19, 20 are connected to one end of a pipe 22 via a branch connector 21, and the other end of the pipe 22 is connected to an upper end portion of a weighing hopper 23. Motorized on-off valves 24, 25, 26 are installed in the pipes 18, 19, 20 and the ejector is installed in the pipe 22.
27 are installed. From storage tanks 2, 3, 4 to weighing hopper 23
Up to the above, the first supply mechanism is configured.

The weighing hopper 23 is a weighing device including, for example, a load cell.
It is supported by 29, and the discharge port of the weighing hopper 23 is connected to the upper end of a transport hopper 32 via an electric opening / closing valve 31a, a flexible tube 30, and an electric opening / closing valve 31. The transportation hopper 32 is supported by a weighing device 33 such as a load cell, and the transportation hopper 32 is
The outlet of is connected to the pipe 35 through the rotary valve 34 and the branch pipe 35a.

One end of the pipe 35 is connected to one end of a pipe 37 via a connector 36, and the other end of the pipe 37 is connected to a compressed air discharge port of an oilless compressor 38 as an example of a compressed air supply source. . An on-off valve 39 is installed in the pipe 37, and an electromagnetic on-off valve 40 is installed in the pipe 35. Branch pipe from the position between the connector 36 of the pipe 35 and the on-off valve 40.
35b is branched, and the tip of the branch pipe 35b is connected to the drive air inlet of the ejector 27. An electromagnetic on-off valve 41 is interposed in the branch pipe 35b.

The other end of the pipe 35 is connected to the artificial mixed feed inlet of the distributor 43 via the connector 42, and the plurality of artificial mixed feed outlets of the distributor 43 have pipes 45 (only three pipes are shown in FIG. 1). (Shown) are each connected at one end. The other end of the pipe 45 is connected to one end of a plurality of pipes 47 via a branch connector 46, and a rotation type feeding nozzle 48 is connected to the other end of the pipe 47. The feeding nozzle 48 is located above the water surface of the fish tank 49.

A control device 50 including, for example, a microcomputer is installed in the case 1 of the feeding unit. Control device
The reading unit 50 reads detection signals from the weighing devices 29, 33, the distributor 43, etc., and opens / closes the valves 24, 25, 26, 31, the rotary valve 34, and the distributor 43 according to preset data and programs.
Etc. The pipes 35 and 45 constitute a transportation route for transporting the artificial mixed feed, the pipe 35 constitutes a main passage of the transportation route, and the pipe 45 constitutes a branch passage of the transportation route, that is, a branch passage. A second supply mechanism is configured from the transportation hopper 32 to the fish tank 49.

FIG. 2 is a schematic plan view of the distributor 43. A screw shaft 54 rotatably supported by brackets 52 and 53 fixed to the inner wall surface of a casing 51 via bearings (not shown) is a stepping motor 55. It can be rotated around the axis. Screw shaft 54
A moving body 56 is screwed on the moving body 56, and the moving body 56 moves in the axial direction of the screw shaft 54 by the rotation of the screw shaft 54. A working fluid supply pipe 58 is connected to the movable body 56 via a flexible pipe 57 such as a rubber hose.
(Not shown in FIG. 1) is connected and a working fluid such as air is supplied. An electromagnetic valve 59 disposed on the inner wall surface of the casing 51 is interposed between the flexible pipe 57 and the working fluid supply pipe 58, and the flexible pipe 57 and the working fluid supply pipe 58 are connected by the electromagnetic valve 59. The communication state of is switched. Mobile
Reference numeral 56 is connected to the connector 42 through a flexible pipe 60 such as a rubber hose, and the artificial compound feed is supplied together with the air flow.
Multiple blocks between bracket 52 and bracket 53
A fixed body 64 composed of 63 is arranged parallel to the screw shaft 54, and each block 63 can face the movable body 56 with a predetermined gap. A pipe 45 is connected to each block 63.
The flexible pipes 57, 60 are arranged with a sufficient length so that they can accommodate the movement of the moving body 56.

FIG. 3 is an enlarged vertical sectional front view of a main part of the distributor 43, and FIG. 4 is an enlarged plan view of the main part. Body 56
and a closing portion 56b that closes the other end of the main body portion 56a.

The closing portion 56b is composed of a substantially cylindrical tubular portion 56c and a substantially annular plate-shaped annular plate portion 56d protruding radially from the outer periphery of the central portion of the tubular portion 56c in the axial direction. Part 56d
Is fixed to the main body portion 56a by a plurality of bolts (not shown). Holes 70 and 71 are formed in the body portion 56a of the moving body 56 above and below the cylinder chamber 69, and a nut 72 is fitted and fixed in the hole 70. The nut 72 is screwed into the screw shaft 54 and
A guide rod 73 that guides the moving body 56 is fitted in 71 so as to be slidable relative to each other.

Both ends of the guide rod 73 are supported by brackets 52 and 53 (Fig. 3), and are arranged parallel to the screw shaft 54. Each block 63 of the fixed body 64 is a block body 63 of a substantially rectangular parallelepiped shape.
The block body 63a includes a cover body 63b that covers the block body 63a from above and below, and holes 74 and 75 are formed in the block body 63a. Support rods 76 and 77 are fitted in the holes 74 and 75,
The support rods 76 and 77 are parallel to the screw shaft 54 and the brackets 52 and 53.
Both ends are supported by (FIG. 3).

A piston 79 is slidably fitted in the cylinder chamber 69, one end of the piston 79 is fitted in a small diameter portion 69a of the cylinder chamber 69, and the other end of the piston 79 is closed by the moving body 56. 56b
One end of the tubular portion 56c is fitted. A large diameter portion 79a is formed at the center of the piston 79 in the axial direction.
9a partitions the cylinder chamber 69 into a working fluid chamber 69b and a spring chamber 69c. A female screw is screwed on the peripheral wall of the other end of the spring chamber 69c, and a substantially annular plate-shaped spring receiver 80 is screwed onto the female screw. A spring 81 composed of a coil spring is interposed between the spring receiver 80 and the large diameter portion 79a of the piston 79, and the spring 81 urges the piston 79 toward the fixed body 64 side. A plurality of screw holes 82 are screwed into the spring bearing 80 at equal intervals in the circumferential direction, and one end of each screw hole 82 has a piston 79.
The other end of the stopper 83, which comes into contact with the large diameter portion 79a, is screwed.

A communication hole 84 for communicating the working fluid chamber 69b and the first flexible pipe 57 is formed in the main body portion 56a of the moving body 56, and the working fluid such as air for operating the piston 79 is the working fluid. It is supplied to the working fluid chamber 69b through the supply pipe 58 (FIG. 2), the flexible pipe 57, and the communication hole 84. An O-ring 85 is attached to the annular groove formed on the outer periphery of one end of the piston 79, and an O-ring 86 is attached to the annular groove formed on the outer periphery of the large diameter portion 79a of the piston 79 to close the moving body 6. An O-ring 87 is attached to the annular groove formed on the outer circumference of the one end of the tubular portion 56c of the portion 56b.

A first through hole 89 is formed in the piston 79 along the axial direction, and a through hole 90 for communicating the through hole 89 and the flexible pipe 60 is formed in the closed portion 56b of the moving body 56. And is formed in a straight line. The block body 63a of each block 63 of the fixed body 64 is formed with a through hole 91 having the same diameter as the through hole 89 and capable of forming a straight line with the through hole 89.
It communicates with 45. A ring-shaped packing 92 made of elastic rubber that constitutes a seal portion is attached to an annular groove formed on one end surface of the piston 79 so as to surround the opening of the through hole 89, and each block of the fixed body 64 is attached. The block main body 63a of 63 is integrally provided with a ring-shaped protruding portion 63c capable of contacting the packing 92.

Slits 93 are formed at predetermined intervals at the tip of the cover body 63b of each block 63 of the fixed body 64, and the slits 93 are detected in the recess formed in the upper surface of the main body portion 56a of the moving body 56. A transmissive photo sensor 94 is installed. The photo sensor 94 includes a light emitting portion and a light receiving portion, and slits are formed by the light emitted from the light emitting portion entering the light receiving portion.
Detects 93. The detection signal output end of the photo sensor 94 is electrically connected to the input end of the control device 50 (FIG. 1), and the control signal input ends of the stepping motor 55 and the solenoid valve 59 are electrically connected to the output end of the control device 50. It is connected to the.

Next, the operation will be described.

The controller 50 supplies the set artificial mixed feed to the set one or more fish farms 49 at the preset time. That is, at a predetermined time, the control device 50
Opens the on-off valves 24, 41. This allows the ejector 27
Is operated, the artificial mixed feed stored in the storage tank 2 is sucked and taken out, and is supplied to the weighing hopper 23. The weight of the weighing hopper 23 in an empty state is set in advance in the control device 50, and the weight of the weighing hopper 23 is measured by the weighing device 29.
Is constantly weighed by the
Since it is input to 50, the control device 50 is
It is possible to calculate the weight of the artificial compound feed supplied to the. When a predetermined amount of artificial mixed feed is supplied to the weighing hopper 23, the control device 50 closes the opening / closing valve 24.

Next, the control device 50 opens the on-off valve 31 to open the weighing hopper.
After supplying 23 artificial mixed feeds to the transport hopper 32, the opening / closing valve 31 is opened. Next, the control device 50 controls the distributor 43 to bring the pipe 35 into communication with the pipe 45 corresponding to a preset predetermined fish-culturing tank 49, and operates the rotary valve 34. As a result, the artificial compound feed contained in the transport hopper 32 is supplied to the pipe 35 via the branch pipe 35a. Plumbing 35
Since compressed air is supplied to the pipe from the compressor 38, the artificial mixed feed supplied to the pipe 35 passes through the distributor 43, the pipe 45, etc. together with the airflow to the predetermined fish tank 49 from the injection port of the feeding nozzle 48. Be fed.

During this feeding, the control device 50 causes the weighing hopper 23 to feed the artificial mixed feed for feeding to the next fish tank 49 by the same operation as described above. When the transport hopper 32 is empty,
The control device 50 knows this from the measurement signal of the weighing device 33,
While operating the distributor 43 to select the next fish tank 49,
The artificial mixed feed of the weighing hopper 23 is supplied to the transport hopper 32, and further fed to the next fish farm 49 by the same operation as above.

The above operation is repeated, and an arbitrary number of artificial mixed feeds of arbitrary types are supplied to arbitrary numbers of fish tanks 49. This completes one feeding, and the control device 50 is on standby until the next feeding time. The number of feedings per day can be set arbitrarily, and the feeding time per unit feeding amount for each fish tank 49 can also be adjusted by controlling the number of rotations of the rotary valve 34, and thus can be set arbitrarily. is there. Of course, it is possible to arbitrarily set the feeding amount of the fish tank 49 and the artificial mixed feed to be fed for each feeding.

Next, details of the operation of the distributor 43 will be described. Now, the working fluid of the predetermined pressure is supplied to the working fluid chamber 69b, and the piston 79 resists the biasing force of the spring 81 as shown in the drawing.
It is assumed to be in contact with 83. When the stepping motor 55 is actuated by a command from the control device 50, the screw shaft 54 rotates, whereby the moving body 56 is guided and moved by the guide rod 73. When the moving body 56 moves to the position of the predetermined block 73 of the fixed body 64 and the photo sensor 94 detects the slit 93, the detection signal of the photo sensor 94 is input to the control device 50, and the control device 50 stops the stepping motor 55. . Then, the control device 50 operates the solenoid valve 59. This allows the working fluid chamber
The working fluid pressure of 69b is released, the piston 79 moves to the left in FIG. 3 by the urging force of the spring 81, and one end surface of the piston 79 is pressed against the block 63. In this state, the protruding portion 63c of the block 63 contacts the packing 92, and the packing 92 is elastically deformed. In this state, when the artificial mixed feed is supplied together with the airflow through the pipe 35, the artificial mixed feed is supplied with the flexible pipe 60 and the through hole.
It flows into the pipe 45 through the 90, the through hole 89, and the through hole 91, and is fed to a predetermined fish farm 49. When the feeding of the predetermined amount is completed, the control device 50 stops the rotary valve 34 and operates the electromagnetic valve 59. As a result, the working fluid of a predetermined pressure is supplied from the working fluid supply pipe 58 to the working fluid chamber 69b through the flexible pipe 57 and the communication hole 84, and the piston 79 resists the biasing force of the spring 81 and is shown in FIG. It moves to the right and contacts the stopper 83. The same operation is repeated thereafter, and feeding is performed.

As described above, in this embodiment, an arbitrary amount of the artificial mixed feed is discharged from any one of the plurality of storage tanks 2, 3, and 4 and pneumatically transported, and this pneumatic transportation is performed. By arbitrarily selecting one branching path among a plurality of branching paths by the distributor 43, an arbitrary amount of artificial mixed feed is fed to any feeding position of the plurality of feeding points. , Feeding frequency, feeding amount, feeding time, type of artificial mixed feed, etc. can be arbitrarily set for each feeding point to feed completely automatically. Optimal feeding according to the growth stage can be performed.

In addition, in this embodiment, since the transportation hopper 32 is provided, the feeding time to one fish tank 49 is used for the next fish tank.
The artificial mixed feed for feeding 49 can be fed to the weighing hopper 23 to be weighed, so that feeding can be performed efficiently.

Further, in this embodiment, one end of the pipes 5, 6, 7 is connected to the flow rate adjusting valves 11, 1
Since it is open to the atmosphere via 2, 13, the supply amount of artificial mixed feed from the storage tanks 2, 3, 4 to the weighing hopper 23 per unit time can be arbitrarily changed.

In this embodiment, the ejector 27 is used to weigh the hopper 23.
Since the artificial mixed feed is supplied to, a part of the compressed air for transportation can be used, and it is not necessary to separately provide a power source for supplying the artificial mixed feed in addition to the compressor 38.

Further, in this embodiment, the pipe 45 is branched into a plurality of pipes 47 by the branch connector 46, and the rotation type feeding nozzle 48 is further used.
Since it is configured to spray the artificial mixed feed, the artificial mixed feed can be uniformly sprayed uniformly over the entire water surface of each fish tank 49.

(Other Embodiments) Although three storage tanks 2, 3 and 4 are provided in the above embodiment, the present invention is not limited to such a configuration, and the number of these storage tanks may be set as necessary. It may be determined as appropriate.

Further, in the above-described embodiment, the one in which the moving body 56 performs the reciprocating linear motion is used as the distributor 43, but the present invention is not limited to such a configuration, and for example, a rotary distributor is used. Good.

(Effects of the Invention) According to the feeding device of the present invention, as shown in the following items, a minute artificial compounded feed corresponding to the size of the biological feed is sprayed over a wide area uniformly and accurately in small amounts. Therefore, it is possible to perform feeding particularly suitable for fry seedling production.

Since the ejector 27 in the first supply mechanism sucks and takes out the artificial mixed feed in the storage tank, it is possible to prevent a bridge or the like from being generated in the vicinity of the discharge portion of the storage tank, and during the air transportation to the weighing hopper 23. It is also possible to effectively prevent blockage due to the adhesiveness of feed.

Moreover, since the suction force of the ejector 27 is adjusted by the flow rate adjusting valve, the amount (feed rate) of the feed taken out from the storage tank per unit time can be adjusted accurately. Further, since the weighing hopper 23 is equipped with the weighing device 29, the ejector
The supply amount by 27 can be set accurately.

The feed in the transport hopper 32 is discharged through the rotary valve 34 of the second supply mechanism, so the rotary valve
Transport hopper 32 by controlling the speed of rotation 32
It is possible to accurately adjust the discharge amount (discharge speed) of the feed from the unit per unit time.

Moreover, since the transport hopper 32 is equipped with the weighing device 33, the amount discharged by the rotary valve 34 can be set accurately.

The feed discharged from the rotary valve 34 is distributed to the distributor 43.
Transported to any fish tank 49 selected in
A plurality of branches are branched by a branch connector 46 at the front stage of each fish tank 49, and they are simultaneously sprayed from the feeding nozzles 48. Since the feeding nozzle 48 is a rotating type, the feed is
It is sprayed from a rotating feeding nozzle 48. That is, feed
It can be sprayed over the surface of water over a wide area and evenly in a very dilute concentration.

According to the present invention, the following effects are further exhibited. That is, while the feed in the transportation hopper 32 is pneumatically transported by the second feeding mechanism, the next feed can be fed and weighed by the first feeding mechanism to the weighing hopper 23. Therefore, as soon as the feeding of the previous feed is completed, the feeding of the next feed can be performed, and the feeding of the feed can be performed efficiently.

Both the first and second supply mechanisms have one compressed air supply source
Since 38 is used, the configuration of the entire device is simple.

A closed line is formed from the storage tank to the feeding nozzle 48 through the weighing hopper 23 and the transportation hopper 32. For this reason, there is no risk of moisture, foreign matter, germs and the like being mixed in the feed from the time it is put into the storage tank until it is sprayed by the feeding nozzle 48. This is very convenient for fry seedling production.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram of a feeding apparatus according to an embodiment of the present invention, FIG. 2 is a schematic plan view of a distributor, FIG. 3 is an enlarged vertical sectional front view of the same part, and FIG. 4 is an enlarged plan view of the same part. It is a figure. 2,3,4 …… Reservoir, 23 …… Weighing hopper, 24,25,26 ……
Open / close valve (first supply device), 27 ... Ejector (first supply device), 29 ... Weighing device, 31 ... Open / close valve (second supply device), 34 ... Rotary valve (second) Supply device), 35 ... Piping (transportation path, main passage), 38 ... Compressor (compressed air supply source), 43 ... Distributor, 45 ... Piping (transportation path, branch passage, branch passage), 50 ……Control device

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yoshikazu Mito 3-939 Mikunihonmachi, Yodogawa-ku, Osaka City, Osaka Japan Aluminum Co., Ltd.

Claims (1)

[Claims] 1. A feeding device for feeding a powdered artificial compound feed from a storage tank by pneumatic transportation and feeding it to a fish farm, wherein a plurality of storage tanks (2, 3, 4 ... ) From which the above feed is taken and pneumatically transported to the weighing hopper (23)
And a transport hopper (3) for temporarily storing the feed weighed by the weighing hopper (23) at the next stage of the feeding mechanism and the weighing hopper (23).
2) and a second supply mechanism for pneumatically transporting the feed discharged from the transport hopper (32) to the fish tank (49) arbitrarily selected by the distributor (43). The supply mechanism has an ejector (27) that sucks the feed in the storage tank by the air from the compressed air supply source (38) and takes it out and supplies it to the weighing hopper (23). The suction force is controlled by the flow control valve (11,1
2,13 ...) are adjusted, and the weighing hopper (23) and the transportation hopper (32) respectively measure the feed stored in the hopper. In the second supply mechanism, in the second stage of the distributor (43), a branch connector (46) for branching the feed into a plurality of fish tanks (49) and a rotation type. Multiple feeding nozzles (4
8) is provided, and the second supply mechanism is configured so that the rotary valve (34) is connected from the discharge port of the transport hopper (32).
The above-mentioned feed discharged through the compressed air source (38)
Air from the distributor (43), branch connector (46),
And a feeding nozzle (48) to supply the fish to the fish tank (49), and the first and second supply mechanisms are control devices () that receive signals from the weighing devices (29, 33). 50) Feeding device characterized by being adapted to be controlled by