Automatic bait feeding device for aquaculture based on wave energy conversion

Abstract

The application provides an automatic bait feeding device for aquaculture based on wave energy conversion, which comprises an oscillating water column wave energy conversion device and a feeding device; the feeding device comprises a hopper, a material receiving chamber, a discharging port, a material scattering port, a first electromagnetic valve group and a second electromagnetic valve group; the oscillating water column wave energy conversion device comprises an air cavity, the bottom of the windward side of the air cavity is located in water, and the bottom opening is communicated with the aquaculture water body; the leeward side of the air cavity is provided with an air inlet; the leeward side of the air cavity is provided with a power generation chamber, and the power generation chamber is connected with the air cavity and is provided with an air inlet; an impeller and a generator connected with the impeller are arranged in the power generation chamber; the generator is electrically connected with the first electromagnetic valve group and the second electromagnetic valve group. The feeding device is opened and closed by the oscillating water column wave energy conversion device for power generation.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of aquaculture, in particular to an automatic bait feeding device for aquaculture based on wave energy conversion. BACKGROUND

[0002] The current bait feeding device is generally composed of a hopper, a discharging device, a throwing device and a controller. The bait feeding device needs external power supply to realize the processes of discharging and feeding of the feeding machine, which increases the cost of power transmission. Especially for deep-sea aquaculture, the cost and difficulty of power transmission are greatly increased, and certain safety hazards are also brought.

[0003] The controller is mainly a timing control device, mainly including timing function and interval control function. The timing function refers to stopping feeding automatically after a period of time after starting the bait feeding machine. The interval control function refers to opening the discharging switch every certain time during feeding, then closing, and repeating the process until the timing time is up and the feeding is stopped. This kind of device needs to be manually started by the user, and cannot realize automatic control. At the same time, if a large wind and current is encountered during the operation of the feeding machine, a large amount of bait will be lost, which cannot guarantee the effective use of the bait. SUMMARY

[0004] According to the above technical problems, an automatic bait feeding device for aquaculture based on wave energy conversion is provided.

[0005] The technical means adopted by the present application are as follows:

[0006] An automatic bait feeding device for aquaculture based on wave energy conversion, comprising an oscillating water column wave energy conversion device and a feeding device.

[0007] The feeding device comprises a hopper, the bottom of the hopper is provided with a discharging port and a valve plate, and the valve plate is connected with a first electromagnetic valve group for driving the valve plate to open and close the discharging port; a receiving space is arranged below the valve plate, the bottom of the receiving space has a feeding port, and a valve block and a second electromagnetic valve group for driving the valve block to open and close the feeding port are arranged at the feeding port; when the first electromagnetic valve group is powered on, the valve plate opens the discharging port, and when the first electromagnetic valve group is powered off, the valve plate closes the discharging port; when the second electromagnetic valve group is powered on, the valve block closes the feeding port, and when the second electromagnetic valve group is powered off, the valve block opens the feeding port. Figure 1 、 2 );

[0008] The oscillating water column wave energy conversion device comprises an air chamber, the air chamber floats on the water surface, the bottom of the windward side of the air chamber is located in the water, and the bottom is provided with a water inlet connected with the aquaculture water area; the top of the leeward side of the air chamber is provided with an air chamber air inlet and a first one-way valve; the leeward side of the air chamber is provided with a power generation room, and the connection between the power generation room and the air chamber is provided with a power generation room air inlet and a second one-way valve, the power generation room is provided with an impeller and a generator connected with the impeller; the side of the power generation room away from the power generation room air inlet is provided with an exhaust hole and a third one-way valve.

[0009] The generator is electrically connected with the first electromagnetic valve group and the second electromagnetic valve group.

[0010] Preferably, the hopper is fixedly connected with the peripheral frame.

[0011] Preferably, the first electromagnetic valve group comprises a first sliding rail, the first sliding rail is fixedly connected with the valve plate, and one end is connected with a first reset spring fixed on the peripheral frame; the first sliding rail is fixedly provided with a first magnet, and the first magnet is externally provided with a fixedly arranged first coil, and the first coil is electrically connected with the generator.

[0012] Preferably, the second electromagnetic valve group comprises a second sliding rail, the second sliding rail is fixedly connected with the valve block, one end is connected with a second reset spring fixed on the peripheral frame, and the second reset spring is fixed on the side wall of the peripheral frame opposite to the first reset spring; the second sliding rail is fixedly provided with a second magnet, and the second magnet is externally provided with a fixedly arranged second coil, and the second coil is electrically connected with the generator.

[0013] Preferably, the second sliding rail is externally provided with a fixedly arranged third coil, the third coil is coaxially arranged with the second coil, and has a spacing, and the third coil is electrically connected with the generator.

[0014] Preferably, the bottom of the material receiving room is provided with two material scattering ports and two valve blocks.

[0015] Preferably, the hole diameter (opening width) of the air chamber air inlet and the power generation room air inlet is equal.

[0016] The power generation principle of the oscillating water column wave energy conversion device is as follows: when the wave crest of the traveling wave directly acts on the windward side of the air chamber, the free water surface in the air chamber is lifted, resulting in that the air pressure in the air chamber is greater than the external atmospheric pressure, and the air in the air chamber is driven to flow out; under the guidance of the second one-way valve, the sea water enters the power generation room to drive the impeller to rotate, and the generator generates electricity, and then the sea water is discharged from the power generation room under the guidance of the third one-way valve (as shown in Figure 3). Conversely, when the trough of the traveling wave directly acts on the leeward side of the air cavity, it will cause the air pressure in the air cavity to drop suddenly to less than the external atmospheric pressure, and the external air will enter the air cavity through the air cavity inlet and the first one-way valve, preparing for the next power generation (as shown in Figure 4 The mechanical energy of the wave is converted into the up-and-down oscillation of the internal water column through the air cavity, which in turn drives the high-speed reciprocating motion of the internal and external air, thereby completing the energy conversion process and realizing power generation.

[0017] Based on the wave theory, the wave power of the incident wave can be represented as:

[0018]

[0019] where g is the acceleration of gravity, w is the wave angular frequency, k is the wave number, H represents the water depth, and h is the incident wave height.

[0020] The unit width periodic average energy conversion of the oscillating water column type wave energy conversion device can be represented as:

[0021]

[0022] where T is the wave period, B is the width of the air chamber, d is the opening width of the power generation interval air inlet, P(t) is the instantaneous pressure in the air chamber,

[0023] u(t) is the instantaneous spatial average velocity in the air cavity, and U(t) is the instantaneous spatial average velocity of the power generation interval air inlet.

[0024] The energy conversion efficiency is:

[0025]

[0026] In practice, the energy conversion rate of the oscillating water column type wave energy conversion device can be calculated according to the above formula, combined with the actual sea conditions and production needs. In the circuit where the coil is energized, voltage regulating devices (such as diodes) can be added according to the actual situation to achieve stable control of the coil current.

[0027] The working principle of the feeding device is as follows: after the generator generates electricity, the first coil is energized, driving the first magnet to move the first sliding rail, squeezing the first return spring, opening the discharge port, and the bait in the hopper enters the bait receiving interval; the second coil and the third coil are energized, driving the second magnet to move the second sliding rail, squeezing the second return spring, and closing the bait scattering port which was originally in an open state. After the generator is powered off, the first coil, the second coil and the third coil are de-energized, the first magnet and the first sliding rail are reset under the action of the first return spring, the discharge port is closed again, the second magnet and the second sliding rail are reset under the action of the second return spring, and the bait scattering port is opened, and the bait is released.

[0028] Compared with the prior art, the present application has the following advantages:

[0029] 1、The present application uses the water flow condition of the breeding area to realize automatic adjustment of feed feeding. The present application uses a first electromagnetic valve group and a second electromagnetic valve group, and uses an oscillating water column type wave energy conversion device to realize automatic control of feed feeding. When the wave flow is too large and too fast, the second electromagnetic valve group can reduce the amount of feed feeding or even not feed. When the wave flow is gentle, the amount of feed feeding is increased, which is beneficial to effective utilization of feed.

[0030] 2、The present application is matched with the actual water flow condition of the breeding area to maximize the effective feeding rate of feed. When the incoming flow (wave advances), all the coils are powered on, the discharge port is opened, and the food in the barrel is scattered to the receiving space. The scattering port is closed to prevent food from being scattered and flowing away, causing waste of feed. When the wave goes away (the trough approaches), all the coils are powered off, the discharge port is closed, and the scattering port is opened, and the feed is scattered into the breeding net cage. When the water flow is large, the oscillating water column moves, the generator power is strong, the coil power is sufficient, and the three coils are powered on. The second magnet is affected by the second coil and the third coil. When reset, the distance is far, the scattering port is slowly opened, the feed is slowly scattered, and the waste of feed is reduced. In the extreme water flow condition, the oscillating water column reciprocates, all the coils are continuously charged, the second magnet is affected by the second coil and the third coil, the scattering port is always closed, and the feed cannot be scattered to avoid waste of feed.

[0031] Based on the above reasons, the present application can be widely popularized in the field of aquaculture. BRIEF DESCRIPTION OF DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0033] Figure 1 The present application is a structure diagram of an oscillating water column type wave energy conversion device in the specific embodiment.

[0034] Figure 2 The present application is a structure diagram of a feeding device in the specific embodiment.

[0035] Figure 3 The present application is a schematic diagram of the discharge of the hopper in the specific embodiment.

[0036] Figure 4 The present application is a schematic diagram of the scattering of the scattering port in the specific embodiment.

[0037] Figure 5 Figure 8 is a schematic view of the wave trough directly acting on the air cavity in the embodiment of the present application.

[0038] Figure 6 Figure 8 is a schematic view of the wave trough directly acting on the air cavity in the embodiment of the present application.

[0039] In the figure: 1, hopper; 2, valve plate; 3, material receiving space; 4, valve block; 5, air cavity; 6, water inlet; 7, air inlet of air cavity; 8, first one-way valve; 9, air inlet of power generation space; 10, second one-way valve; 11, impeller; 12, generator; 13, exhaust hole; 14, third one-way valve; 15, peripheral frame; 16, first sliding rail; 17, first return spring; 18, first magnet; 19, first coil; 20, second sliding rail; 21, second return spring; 22, second magnet; 23, second coil; 24, third coil; 25, discharge port; 26, material scattering port. DETAILED DESCRIPTION

[0040] It should be noted that the embodiments and features of the embodiments in the present application can be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

[0041] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings of the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. The description of the at least one exemplary embodiment is actually only illustrative, but not as any limitation on the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0042] It should be noted that the terms used herein are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form unless the context clearly indicates otherwise, and it should also be understood that when the terms "comprise" and / or "include" are used in the specification, there is a presence of the features, steps, operations, devices, components and / or combinations thereof.

[0043] The foregoing is considered as illustrative only of the principles of the application. Further, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit the application to the exact construction and practice described. Accordingly, all such variations are intended to be included within the scope of the present application as defined in the following claims, along with full equivalents thereof.

[0044] In the description of the present application, it is to be understood that the orientation terms such as "front", "back", "up", "down", "left", "right", "transverse", "vertical", "horizontal", "top", "bottom", etc. indicate the orientation or positional relationship shown in the drawings, which are merely for the convenience of describing and simplifying the present application, and do not indicate or imply that the devices or elements referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the scope of protection of the present application. The orientation terms "inner", "outer" refer to the inner and outer relative to the contour of the components themselves.

[0045] For the convenience of description, spatial relative terms such as "over", "above", "upper surface", "upper", etc. can be used herein to describe the spatial positional relationship of one device or feature with respect to other devices or features as shown in the drawings. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation of the devices described in the drawings. For example, if the devices in the drawings are inverted, the device described as "above" or "over" other devices or structures will be positioned "below" or "under" the other devices or structures. Thus, the exemplary term "above" can include both "above" and "below" orientations. The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein are interpreted accordingly.

[0046] In addition, it should be noted that the use of the terms "first", "second", etc. to define parts of components is merely for the convenience of distinguishing the corresponding parts of components, and the above terms have no special meaning unless otherwise stated, and therefore cannot be understood as limiting the scope of protection of the present application.

[0047] As Figures 1-2As shown, a wave energy conversion-based automatic bait feeding device for aquaculture includes an oscillating water column wave energy conversion device and a feeding device.

[0048] The feeding device includes a hopper 1, the bottom of the hopper 1 is provided with a discharge port 25 and a valve plate 2, and the valve plate 2 is connected with a first electromagnetic valve group for driving the valve plate 2 to open and close the discharge port 25; the lower side of the valve plate is provided with a receiving chamber 3, the bottom of the receiving chamber 3 has two discharge ports 26, and a valve block 4 and a second electromagnetic valve group for driving the valve block 4 to open and close the discharge port 26 are arranged at the discharge port 26; when the first electromagnetic valve group is powered on, the valve plate 2 opens the discharge port 25, and when the first electromagnetic valve group is powered off, the valve plate 2 closes the discharge port 25; when the second electromagnetic valve group is powered on, the valve block 4 closes the discharge port 26, and when the second electromagnetic valve group is powered off, the valve block 4 opens the discharge port 26.

[0049] The oscillating water column wave energy conversion device includes an air cavity 5, the air cavity 5 floats on the water surface, the bottom of the air cavity 5 on the windward side is located in the water, and the bottom has a water inlet 6; the top of the leeward side of the air cavity 5 has an air cavity air inlet 7 and a first one-way valve 8; the leeward side of the air cavity 5 has a power generation chamber, and the connection between the power generation chamber and the air cavity 5 has a power generation chamber air inlet 9 and a second one-way valve 10, the power generation chamber is provided with an impeller 11 and a generator 12 connected with the impeller 11; the side of the power generation chamber away from the power generation chamber air inlet 9 is provided with an exhaust hole 13 and a third one-way valve 14.

[0050] The hole diameter (opening width) of the air cavity air inlet 7 and the power generation chamber air inlet 9 is equal.

[0051] The hopper 1 is fixedly connected with a peripheral frame 15.

[0052] The first electromagnetic valve group includes a first sliding rail 16, the first sliding rail 16 is fixedly connected with the valve plate 2, and one end is connected with a first return spring 17 fixed on the peripheral frame 15; the first sliding rail 16 is fixedly provided with a first magnet 18, and the first magnet 18 is externally provided with a fixedly arranged first coil 19, and the first coil 19 is electrically connected with the generator 12.

[0053] The second electromagnetic valve group includes a second sliding rail 20, the second sliding rail 20 is fixedly connected with the valve block 4, and one end is connected with a second return spring 21 fixed on the peripheral frame 15, and the second return spring 21 is fixed on the side wall of the peripheral frame 15 opposite to the first return spring 17; the second sliding rail 20 is fixedly provided with a second magnet 22, and the second magnet 22 is externally provided with a fixedly arranged second coil 23, and the second coil 23 is electrically connected with the generator 12.

[0054] The second sliding rail 20 is sleeved with a fixed third coil 24, and the third coil 24 is coaxially arranged with the second coil 23 and has a spacing, and the third coil 24 is electrically connected with the generator 12.

[0055] The power generation principle of the oscillating water column wave energy conversion device is as follows: when the wave crest of the traveling wave directly acts on the wave-approaching side of the air cavity 5 (as shown in Figure 5 ), the free surface of the seawater in the air cavity 5 is lifted, causing the air pressure inside the air cavity 5 to be greater than the external atmospheric pressure, and the air in the air cavity 5 is driven to flow out; under the guidance of the second one-way valve 10, the seawater enters the power generation chamber to drive the impeller 11 to rotate, drive the generator 12 to generate electricity, and then is discharged from the power generation chamber under the guidance of the third one-way valve 14. Conversely, when the wave trough of the traveling wave directly acts on the wave-approaching side of the air cavity 5 (as shown in Figure 6 ), the air pressure in the air cavity 5 is suddenly reduced to be less than the external atmospheric pressure, and the external air enters the air cavity 5 through the air cavity air inlet 7 and the first one-way valve 8 to prepare for the next power generation. In this embodiment, the mechanical energy of the wave is converted into the up-and-down oscillation of the internal water column by the air cavity 5, and then the high-speed reciprocating motion of the internal and external air is driven, thereby completing the energy conversion process and realizing power generation.

[0056] The working principle of the feeding device is as follows: after the generator 12 generates electricity, the first coil 19 is electrified to drive the first magnet 18 to move the first sliding rail 16 to extrude the first return spring 17, open the discharging port 25 (as shown in Figure 3 ), and the bait in the hopper 1 enters the bait receiving chamber 3; the second coil 23 and the third coil 24 are electrified to drive the second magnet 22 to extrude the second sliding rail 20 to close the bait scattering port which is originally in an open state. After the generator 12 is de-energized, the first coil 19, the second coil 23 and the third coil 24 are de-energized, the first magnet 18 and the first sliding rail 16 are reset under the action of the first return spring 17 to re-close the discharging port 25, and the second magnet 22 and the second sliding rail 20 are reset under the action of the second return spring 21 to open the bait scattering port to release the bait (as shown in Figure 4 ).

[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and are not limiting; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An automatic feeding device for aquaculture feed based on wave energy conversion, characterized in that, This includes an oscillating water column wave energy conversion device and a feeding device; The feeding device includes a hopper, with a discharge port and a valve plate at the bottom of the hopper. The valve plate is connected to a first solenoid valve assembly that drives the valve plate to open and close the discharge port. Below the valve plate is a receiving chamber with a sprinkling port at the bottom. A valve block and a second solenoid valve assembly that drives the valve block to open and close the sprinkling port are located at the sprinkling port. When the first solenoid valve assembly is energized, the valve plate opens the discharge port; when de-energized, the discharge port closes. When the second solenoid valve assembly is energized, the valve block closes the sprinkling port; when de-energized, the sprinkling port opens. The oscillating water column wave energy conversion device includes an air chamber that floats on the water surface, with its bottom on the wave-facing side submerged in water and having an inlet at the bottom communicating with the aquaculture area. The top of the air chamber on the wave-repellent side has an air chamber inlet and a first one-way valve. The wave-repellent side of the air chamber has a power generation chamber, with an air chamber inlet and a second one-way valve at the connection between the power generation chamber and the air chamber. An impeller and a generator connected to the impeller are installed inside the power generation chamber. An exhaust port and a third one-way valve are located on the side of the power generation chamber away from the power chamber inlet. The generator is electrically connected to the first solenoid valve group and the second solenoid valve group. The hopper is fixedly connected to the outer frame; The first solenoid valve assembly includes a first slide rail, which is fixedly connected to the valve plate, and one end of the slide rail is connected to a first return spring fixed on the outer frame; a first magnet is fixed on the first slide rail, and a first coil is fixedly arranged outside the first magnet, and the first coil is electrically connected to the generator. The second solenoid valve assembly includes a second slide rail, which is fixedly connected to the valve block, and one end of the slide rail is connected to a second return spring fixed on the outer frame. The second return spring is fixed on the side wall of the outer frame opposite to the first return spring. A second magnet is fixed on the second slide rail, and a second coil is fixedly arranged outside the second magnet. The second coil is electrically connected to the generator. The second slide rail is fitted with a fixed third coil, which is coaxial with the second coil and spaced apart. The third coil is electrically connected to the generator. The bottom of the material receiving chamber has two material discharge ports and two valve blocks.

Images