Intelligent sewage device and sewage method of land-based factory aquaculture system

Abstract

The application discloses an intelligent sewage discharge device of a land-based factory-like aquaculture system, which comprises a land-based breeding circular pool, a U-shaped sewage discharge pipe connected to the bottom of the land-based breeding circular pool, a vertical pipe on the side of the U-shaped sewage discharge pipe away from the land-based breeding circular pool being flush with the highest water level line of the land-based circular pool, a tee pipe provided on the vertical pipe, a valve plate provided in the tee pipe and adapted to the inner wall of the branch pipe of the tee pipe, a pneumatic cylinder provided outside the tee pipe, a push rod of the pneumatic cylinder being inserted into the branch pipe of the tee pipe and connected to the valve plate in the axial direction, two air chambers of the pneumatic cylinder being connected with a pneumatic control circuit, and the pneumatic control circuit being capable of being operated in two modes, one being manual operation and the other being remote operation of the Internet of Things. The intelligent sewage discharge device of the land-based factory-like aquaculture system belongs to the technical field of breeding sewage treatment and can timely trigger and control the start and stop of sewage discharge, realizes the timing, quantification and remote control of automatic sewage discharge in combination with the Internet of Things.

Description

Technical Field

[0001] This invention relates to the field of aquaculture wastewater treatment technology, and more specifically, to an intelligent wastewater discharge device and method for a land-based industrialized aquaculture system. Background Technology

[0002] Land-based circular pond aquaculture technology is the fastest-growing facility-based aquaculture technology in my country in recent years. The diameter of these ponds is mostly 6-12 meters, with a pot-shaped bottom sloping at 5-12 degrees. Waste removal is a crucial aspect of this system; untimely or incomplete removal will rapidly deteriorate water quality, leading to fish mortality. Under high-density aquaculture conditions, a single pond needs to be removed at least three times a day. Current methods generally involve passive waste removal by manually pulling and inserting the drain pipe, or by creating a level difference between the pond and the drain pipe when adding new water to expel waste. Land-based factory aquaculture workshops typically contain dozens to hundreds of independent circular ponds. Manually pulling and inserting the pipe for waste removal is extremely labor-intensive. If removing waste from one pond takes 6 minutes, then removing waste from 20 ponds daily would require 360 ​​minutes, consuming a significant portion of the aquaculture workers' time. With the scale of aquaculture growing ever larger, traditional manual sewage discharge is time-consuming and labor-intensive, and cannot meet the needs of actual production. There is an urgent need for efficient, intelligent, and stable sewage discharge methods.

[0003] In the prior art, patent document CN202310316754.7 discloses a drain valve and its automatic drain device for a recirculating aquaculture system. The drain valve includes a valve body, a valve plate, a connecting rope, a riser, an adjusting component, and a controller. The valve body is connected to the drain pipe of the recirculating aquaculture system. The valve plate is located at the outlet of the valve body, with one end rotatably mounted on the valve body. The valve plate controls the connection or disconnection of the drain pipe. The bottom end of the riser is connected to the drain pipe and located upstream of the valve body. The top end of the riser extends upward and has an overflow port on its side wall. One end of the connecting rope is fixed to the other end of the valve plate, and the other end of the connecting rope reaches the top of the riser via the valve body and the drain pipe, located above the overflow port. The control unit is used to adjust the connecting rope, which is mounted on the top of the riser and located above the overflow port. The controller drives the adjusting component.

[0004] For example, patent document CN219844619U discloses an automatic sewage discharge system for a recirculating aquaculture fish pond, including a pond body and a base. The pond body is located above the base, which is filled with gravel. Multiple sleeves are integrally formed on the outer periphery of the pond body, and a support column is inserted into each sleeve, with the bottom of the support column penetrating through the sleeve. A sewage discharge mechanism is located at the bottom of the pond body, a water level control component is located at the back of the pond body, and a water circulation component is located at the front of the pond body. The water circulation component is connected to the water level control component. One end of the sewage discharge mechanism, the water level control component, and the water circulation component all penetrates into the interior of the pond body. The control unit is equipped with a timer controller on the sewage discharge solenoid valve to control the entire sewage discharge mechanism.

[0005] The aforementioned technical solution with patent application number CN202310316754.7 has the following drawbacks:

[0006] (1) The design of this scheme involves many components, and the installation process of these components is relatively difficult;

[0007] (2) The large number of components leads to a higher cost for the invention and a more expensive investment required for the implementation of the entire solution;

[0008] (3) The overall equipment has achieved automation, but the degree of intelligence is relatively low and cannot meet the needs of modern factory-style recirculating aquaculture.

[0009] The technical solution with the aforementioned authorization announcement number CN219844619U has the following drawbacks:

[0010] (1) The level of intelligence in this solution is not high;

[0011] (2) The control unit solenoid valve of this scheme is in a high humidity environment and may also be in direct contact with water. Over time, the control unit will malfunction, causing the entire sewage discharge device to fail. Summary of the Invention

[0012] The technical problem to be solved by the present invention is to address the shortcomings of the existing technology. The purpose of the present invention is to provide an intelligent sewage discharge device for a land-based factory aquaculture system.

[0013] To achieve the above objectives, the present invention provides an intelligent sewage discharge device for a land-based industrialized aquaculture system, comprising a land-based circular aquaculture pond, a U-shaped sewage discharge pipe connected to the bottom of the pond, a T-junction pipe on the side of the U-shaped sewage discharge pipe away from the pond, a valve plate adapted to the inner wall of the branch pipe of the T-junction pipe, a cylinder on the outside of the T-junction pipe, the push rod of the cylinder being inserted axially into the branch pipe of the T-junction pipe and connected to the valve plate, and a pneumatic control circuit connected to the two air chambers of the cylinder.

[0014] Preferably, the top of the inner wall of the land-based aquaculture circular pond is provided with a maximum water level line, and the top opening of the U-shaped sewage pipe on the side away from the land-based aquaculture circular pond is flush with the maximum water level line.

[0015] Preferably, the valve plate includes a stainless steel gasket connected to the push rod of the cylinder and a silicone waterproof soft gasket disposed at the front end of the stainless steel gasket.

[0016] Preferably, the pneumatic control circuit includes a control air path and a control circuit. The control air path includes a high-pressure air source, an air supply pipe, an exhaust pipe, a two-position five-way solenoid valve, and a first air supply pipe and a second air supply pipe connected to the two air chambers of the cylinder. The two vent ports of the two-position five-way solenoid valve are connected to the exhaust pipe. The air inlet of the two-position five-way solenoid valve is connected to the high-pressure air source through the air supply pipe. The two working air ports of the two-position five-way solenoid valve are respectively connected to the first air supply pipe and the second air supply pipe. The control circuit can control the reversing of the two-position five-way solenoid valve.

[0017] Preferably, the output end of the high-pressure gas source is provided with a pressure reducing valve connected to the gas supply pipe, and the input end of the high-pressure gas source is connected to an air compressor through a pipeline.

[0018] Preferably, the control circuit includes a power supply, an intermediate relay KA, a dual-time relay KT, a normally closed jog switch SB1, a normally open jog switch SB2, and a YV coil of a two-position five-way solenoid valve. The normally closed jog switch SB1, the normally open jog switch SB2, and the intermediate relay KA coil are connected in series with each other and then electrically connected to the power supply. The normally open contact KA-1 of the intermediate relay KA is connected in series with the dual-time relay KT coil and then in parallel with the normally open jog switch SB2 via a wire. The YV coil of the two-position five-way solenoid valve is connected in series with the normally open contact KT-1 of the dual-time relay KT and then in parallel with the intermediate relay KA coil via a wire.

[0019] A sewage discharge method using the intelligent sewage discharge device of the above-mentioned land-based industrialized aquaculture system specifically includes the following steps: controlling the cylinder push rod to retract via a pneumatic control circuit, causing the valve plate to slide from the branch pipe into the tee pipe, thereby connecting the riser of the U-shaped sewage discharge pipe with the branch pipe and opening the sewage discharge outlet; controlling the cylinder push rod to push forward via a pneumatic control circuit, causing the valve plate to slide from the tee pipe into the branch pipe, thereby sealing the branch pipe with the valve plate and closing the sewage discharge outlet.

[0020] Preferably, the pneumatic control circuit includes a control air path and a control circuit. The control air path includes a high-pressure air source, an air supply pipe, an exhaust pipe, a two-position five-way solenoid valve, and a first air supply pipe and a second air supply pipe connected to the two air chambers of the cylinder. The two vent ports of the two-position five-way solenoid valve are connected to the exhaust pipe. The air inlet of the two-position five-way solenoid valve is connected to the high-pressure air source through the air supply pipe. The two working air ports of the two-position five-way solenoid valve are respectively connected to the first air supply pipe and the second air supply pipe. The control circuit can control the reversing of the two-position five-way solenoid valve.

[0021] Preferably, the control circuit includes a power supply, an intermediate relay KA, a dual-time relay KT, a normally closed jog switch SB1, a normally open jog switch SB2, and a YV coil of a two-position five-way solenoid valve. The normally closed jog switch SB1, the normally open jog switch SB2, and the intermediate relay KA coil are connected in series with each other and then electrically connected to the power supply. The normally open contact KA-1 of the intermediate relay KA is connected in series with the dual-time relay KT coil and then in parallel with the normally open jog switch SB2 via a wire. The YV coil of the two-position five-way solenoid valve is connected in series with the normally open contact KT-1 of the dual-time relay KT and then in parallel with the intermediate relay KA coil via a wire.

[0022] Preferably, when it is necessary to open the sewage outlet, press the normally open jog switch SB2 to energize the coil of the intermediate relay KA. Then, the normally open contact KA-1 of the intermediate relay KA closes, energizing the coil of the double time relay KT. After a certain period of time, the normally open contact KT-1 of the double time relay KT closes, energizing the YV coil of the two-position five-way solenoid valve. The energization of the YV coil of the two-position five-way solenoid valve can attract the valve core of the two-position five-way solenoid valve to slide, so that the air supply pipe is connected to the second air delivery pipe. High-pressure gas is injected into the cavity at the right end of the cylinder, causing the cylinder push rod to retract and pull the valve plate in the branch pipe backward, opening the sewage outlet.

[0023] When it is necessary to close the sewage outlet, press the normally closed jog switch SB1 to energize the coil of the intermediate relay KA and the coil of the dual time relay KT, and de-energize the YV coil of the two-position five-way solenoid valve. The de-energization of the YV coil of the two-position five-way solenoid valve causes the valve core of the two-position five-way solenoid valve to reset under the elastic force of the spring, so that the air supply pipe is connected to the first air delivery pipe, and high-pressure gas is injected into the cavity at the left end of the cylinder to push the cylinder push rod forward, pushing the valve plate into the branch pipe to close the branch pipe and realize the closure of the sewage outlet.

[0024] The beneficial effects of this invention are as follows:

[0025] (1) The intelligent sewage discharge device of the land-based factory aquaculture system of the present invention can trigger and control the sewage discharge operation in a timely manner, and realize timed and quantitative sewage discharge and remote control automatic sewage discharge according to actual needs by combining the Internet of Things;

[0026] (2) The intelligent sewage discharge device of the land-based factory aquaculture system of the present invention has a control circuit that can be integrated into an electrical control box in a dry environment, and the execution unit will not malfunction even if it is immersed in water for a long time.

[0027] (3) The intelligent sewage discharge device of the land-based factory aquaculture system of the present invention has a relatively simple overall structure, low cost, simple installation, and integrates the Internet of Things to realize intelligent operation, reduce reliance on human resources, reduce operating costs, and ensure the quality and safety of water bodies. Attached Figure Description

[0028] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0029] Figure 1 This is a three-dimensional structural view of the intelligent sewage discharge device of the land-based industrialized aquaculture system of the present invention.

[0030] Figure 2 This is a schematic diagram of the control circuit in this invention;

[0031] Figure 3 This is a schematic diagram of the control air path in this invention;

[0032] Figure 4 This is a schematic diagram of the internal structure of the cylinder and the three-way pipe connection in this invention.

[0033] The components include: 1. Land-based aquaculture circular pond; 2. Highest water level line; 3. U-shaped sewage pipe; 4. T-shaped pipe; 41. Branch pipe; 5. Cylinder; 7. Pneumatic control circuit; 71. Control air circuit; 72. Control circuit; 8. Valve plate; 81. Stainless steel gasket; 82. Silicone waterproof soft gasket; 9. High-pressure air source; 10. Air supply pipe; 11. Exhaust pipe; 12. Two-position five-way solenoid valve; 13. First air supply pipe; 14. Second air supply pipe; 15. Pressure reducing valve; 16. Air compressor. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. The embodiments of the present invention will be described below according to the overall structure of the present invention.

[0035] The specific implementation of this invention is as follows:

[0036] See Figures 1-4 The present invention discloses an intelligent sewage discharge device for a land-based industrialized aquaculture system, comprising a land-based aquaculture circular pond 1, wherein a U-shaped sewage pipe 3 is connected to the bottom of the land-based aquaculture circular pond 1, and a three-way pipe 4 is provided on the vertical pipe of the U-shaped sewage pipe 3 away from the land-based aquaculture circular pond 1. A valve plate 8 is provided inside the three-way pipe 4, which can be adapted to the inner wall of the branch pipe 41 of the three-way pipe 4. A cylinder 5 is provided on the outside of the three-way pipe 4, and the push rod of the cylinder 5 is inserted into the branch pipe 41 of the three-way pipe 4 in the axial direction and connected to the valve plate 8. The two air chambers of the cylinder 5 are connected to a pneumatic control circuit 7.

[0037] In the intelligent sewage discharge device of this land-based factory aquaculture system, the push rod of the cylinder 5 can be extended or retracted through the pneumatic control circuit 7. When the push rod of the cylinder 5 retracts, it drives the valve plate 8 to slide into the main pipe of the three-way pipe 4, so that the riser of the U-shaped sewage pipe 3 is connected to the branch pipe 41 of the three-way pipe 4. The sewage in the riser of the U-shaped sewage pipe 3 can then be discharged from the branch pipe 41 of the three-way pipe 4. The overall structure is relatively simple, the cost is low, the installation is simple, and it integrates the Internet of Things to realize intelligent operation, reduce the dependence on human resources, reduce operating costs, and ensure the quality and safety of the water body.

[0038] When the branch pipe 41 of the three-way pipe 4 becomes blocked, the push rod of the cylinder 5 can be continuously extended and retracted by the pneumatic control circuit 7. When the push rod of the cylinder 5 retracts into the main pipe of the three-way pipe 4, the sewage in the main pipe of the three-way pipe 4 automatically fills the branch pipe 41 of the three-way pipe 4. The push rod of the cylinder 5 extends forward, causing the valve plate 8 to squeeze and push the sewage in the branch pipe 41 of the three-way pipe 4, which can pressurize the blockage in the branch pipe 41 of the three-way pipe 4. After repeated cycles, the blockage in the branch pipe 41 of the three-way pipe 4 can be pushed out, keeping the branch pipe 41 of the three-way pipe 4 unobstructed.

[0039] Furthermore, a maximum water level line 2 is provided at the top of the inner wall of the land-based aquaculture circular pond 1, and the top end of the U-shaped sewage pipe 3 on the side away from the land-based aquaculture circular pond 1 is flush with the maximum water level line 2. When the water level in the aquaculture pond is higher than the maximum water level line, the water level in the land-based aquaculture circular pond 1 can be balanced through the U-shaped sewage pipe 3.

[0040] Furthermore, the valve plate 8 includes a stainless steel gasket 81 connected to the push rod of the cylinder 5 and a silicone waterproof soft gasket 82 disposed at the front end of the stainless steel gasket 81. The silicone waterproof soft gasket 82 is in tight contact with the inner wall of the branch pipe 41 of the tee pipe 4, providing good sealing. The stainless steel gasket 81 provides support, and the silicone waterproof soft gasket 82 is detachably installed on the stainless steel gasket 81 for easy disassembly and maintenance.

[0041] Furthermore, the pneumatic control circuit 7 includes a control air path 71 and a control circuit 72. The control air path 71 includes a high-pressure air source 9, an air supply pipe 10, an exhaust pipe 11, a two-position five-way solenoid valve 12, and a first air supply pipe 13 and a second air supply pipe 14 that are connected to the two air chambers of the cylinder 5. The two vent ports of the two-position five-way solenoid valve 12 are connected to the exhaust pipe 11. The air inlet of the two-position five-way solenoid valve 12 is connected to the high-pressure air source 9 through the air supply pipe 10. The two working air ports of the two-position five-way solenoid valve 12 are respectively connected to the first air supply pipe 13 and the second air supply pipe 14. The control circuit 72 can control the switching of the two-position five-way solenoid valve 12. Control circuit 72 energizes the coil of two-position five-way solenoid valve 12, causing the valve core of two-position five-way solenoid valve 12 to slide to the left, forming a passage between air supply pipe 10 and second air supply pipe 14. Gas from high-pressure air source 9 is delivered from air supply pipe 10 to second air supply pipe 14, and then to the right air chamber of cylinder 5, thereby pushing the piston in cylinder 5 to slide to the left, causing the push rod to retract, thereby causing the valve plate 8 in the branch pipe to slide to the left, opening the passage of the branch pipe. After control circuit 72 de-energizes the coil of two-position five-way solenoid valve 12, under the action of spring, the valve core of two-position five-way solenoid valve 12 automatically resets and slides to the right, forming a passage between air supply pipe 10 and first air supply pipe 13. Gas from high-pressure air source 9 is delivered from air supply pipe 10 to first air supply pipe 13, and then to the left air chamber of cylinder 5, thereby pushing the piston in cylinder 5 to slide to the right, causing the push rod to extend forward, thereby causing the valve plate 8 to slide into the branch pipe, closing the passage of the branch pipe.

[0042] Furthermore, the output end of the high-pressure gas source 9 is provided with a pressure reducing valve 15 connected to the gas supply pipe 10, the input end of the high-pressure gas source 9 is connected to the air compressor 16 through a pipe, and a pressure relief valve structure is provided on the tank of the high-pressure gas source 9. The function of the pressure reducing valve 15 is to stabilize the gas supply pressure of the gas supply pipe 10.

[0043] Furthermore, the control circuit 72 includes a power supply, an intermediate relay KA, a dual-time relay KT, a normally closed jog switch SB1, a normally open jog switch SB2, and a YV coil of a two-position five-way solenoid valve 12. The normally closed jog switch SB1, the normally open jog switch SB2, and the intermediate relay KA coil are connected in series with each other and then electrically connected to the power supply. The normally open contact KA-1 of the intermediate relay KA is connected in series with the dual-time relay KT coil and then in parallel with the normally open jog switch SB2 via a wire. The YV coil of the two-position five-way solenoid valve 12 is connected in series with the normally open contact KT-1 of the dual-time relay KT and then in parallel with the intermediate relay KA coil via a wire. In this embodiment, pressing the normally open jog switch SB2 temporarily energizes the coil of the intermediate relay KA, closing the normally open contact KA-1 of the intermediate relay KA. This energizes the coil of the dual time relay KT, closing the normally open contact KT-1 of the dual time relay KT. This energizes the YV coil of the two-position five-way solenoid valve 12. Releasing the button of the normally open jog switch SB2 automatically separates the contacts, restoring the normally open jog switch SB2 to its normally open state. Pressing the normally closed jog switch SB1 opens the normally closed contact of the normally closed jog switch SB1, de-energizing the entire circuit and thus de-energizing the YV coil of the two-position five-way solenoid valve 12. Releasing the button of the normally closed jog switch SB1 automatically closes the contacts, restoring the normally closed jog switch SB1 to its normally closed state.

[0044] A sewage discharge method using an intelligent sewage discharge device for a land-based industrialized aquaculture system includes the following steps: The push rod of cylinder 5 is retracted via pneumatic control circuit 7, causing valve plate 8 to slide from inside branch pipe 41 into the inside of tee pipe 4, connecting the riser of U-shaped sewage pipe 3 with branch pipe 41 and opening the sewage discharge outlet; The push rod of cylinder 5 is pushed forward via pneumatic control circuit 7, causing valve plate 8 to slide from inside tee pipe 4 into branch pipe 41, blocking branch pipe 41 and closing the sewage discharge outlet.

[0045] Furthermore, the pneumatic control circuit 7 includes a control air path 71 and a control circuit 72. The control air path 71 includes a high-pressure air source 9, an air supply pipe 10, an exhaust pipe 11, a two-position five-way solenoid valve 12, and a first air supply pipe 13 and a second air supply pipe 14 that are connected to the two air chambers of the cylinder 5. The two vent ports of the two-position five-way solenoid valve 12 are connected to the exhaust pipe 11. The air inlet of the two-position five-way solenoid valve 12 is connected to the high-pressure air source 9 through the air supply pipe 10. The two working air ports of the two-position five-way solenoid valve 12 are respectively connected to the first air supply pipe 13 and the second air supply pipe 14. The control circuit 72 can control the switching of the two-position five-way solenoid valve 12.

[0046] Furthermore, the control circuit 72 includes a power supply, an intermediate relay KA, a dual-time relay KT, a normally closed jog switch SB1, a normally open jog switch SB2, and a YV coil for a two-position five-way solenoid valve 12. The normally closed jog switches SB1 and SB2 are connected in series with the intermediate relay KA coil and then electrically connected to the power supply. The normally open contact KA-1 of the intermediate relay KA is connected in series with the dual-time relay KT coil and then in parallel with the normally open jog switch SB2. The YV coil of the two-position five-way solenoid valve 12 is connected in series with the normally open contact KT-1 of the dual-time relay KT and then in parallel with the intermediate relay KA coil. The control circuit 72 is housed within the electrical control box to prevent circuit malfunctions in the high-humidity environment of the aquaculture system.

[0047] When it is necessary to open the sewage outlet, press the normally open jog switch SB2 to energize the coil of the intermediate relay KA. Then, the normally open contact KA-1 of the intermediate relay KA closes, energizing the coil of the double time relay KT. After a certain period of time, the normally open contact KT-1 of the double time relay KT closes, energizing the YV coil of the two-position five-way solenoid valve 12. The energization of the YV coil of the two-position five-way solenoid valve 12 can attract the valve core of the two-position five-way solenoid valve 12 to slide, so that the air supply pipe 10 is connected to the second air supply pipe 14, and high-pressure gas is injected into the cavity at the right end of the cylinder 5 to retract the push rod of the cylinder 5, pulling the valve plate 8 in the branch pipe 41 backward to open the sewage outlet.

[0048] When it is necessary to close the sewage outlet, press the normally closed jog switch SB1 to energize the coil of the intermediate relay KA and the coil of the dual time relay KT, and de-energize the YV coil of the two-position five-way solenoid valve 12. The de-energization of the YV coil of the two-position five-way solenoid valve 12 causes the valve core of the two-position five-way solenoid valve 12 to reset under the elastic force of the spring, so that the air supply pipe 10 is connected to the first air delivery pipe 13, and high-pressure gas is injected into the cavity at the left end of the cylinder 5 to push the push rod of the cylinder 5 forward, pushing the valve plate 8 into the branch pipe 41 to close the pipeline of the branch pipe 41, thereby closing the sewage outlet.

[0049] In this embodiment, the normally closed momentary switch SB1 and the normally open momentary switch SB2 are switches with wireless Bluetooth, infrared, or local area network control functions. The normally closed momentary switch SB1 and the normally open momentary switch SB2 form an intelligent switch electrically connected to the controller. The intelligent switch is equipped with a remote control. The wiring of the terminals of the normally closed momentary switch SB1 and the normally open momentary switch SB2 within the intelligent switch is connected to the remote control. Figure 2The circuit diagram wiring is consistent, and the normally closed jog switch SB1 and normally open jog switch SB2 within the smart switch can be controlled by a remote control device (such as a remote controller). By controlling the opening or closing of normally closed jog switch SB1 and normally open jog switch SB2 through the controller and remote controller, the sewage discharge operation can be triggered and controlled in a timely manner. Combined with the Internet of Things, it can realize timed and quantitative, remotely controlled automatic sewage discharge according to actual needs.

[0050] Moreover, the control circuit 72 can be integrated into the electrical control box in a dry environment, and the execution unit will not malfunction even if it is immersed in water for a long time.

[0051] The foregoing description of specific exemplary embodiments of the present invention is for illustrative and explanatory purposes. These descriptions are not intended to limit the invention to the precise forms disclosed, and it is obvious that many changes and variations can be made based on the above teachings. Although embodiments of the invention have been shown and described, these specific embodiments are merely explanations of the invention and are not intended to limit it. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. The purpose of selecting and describing exemplary embodiments is to explain the specific principles of the invention and its practical application, so that those skilled in the art, after reading this specification, can make modifications, substitutions, variations, and various choices and changes to the embodiments as needed without departing from the principles and spirit of the invention, provided that such modifications, substitutions, variations, and choices and changes are within the scope of the claims of the invention and are protected by patent law.

Claims

1. An intelligent sewage discharge device for a land-based industrialized aquaculture system, comprising a land-based aquaculture circular pond (1), characterized in that, The bottom of the land-based aquaculture circular pond (1) is connected to a U-shaped sewage pipe (3). A three-way pipe (4) is provided on the vertical pipe of the U-shaped sewage pipe (3) away from the land-based aquaculture circular pond (1). A valve plate (8) is provided inside the three-way pipe (4) that can adapt to the inner wall of the branch pipe (41) of the three-way pipe (4). A cylinder (5) is provided on the outside of the three-way pipe (4). The push rod of the cylinder (5) is inserted into the branch pipe (41) of the three-way pipe (4) along the axial direction and connected to the valve plate (8). The two air chambers of the cylinder (5) are connected to a pneumatic control circuit (7). The top of the inner wall of the land-based aquaculture circular pond (1) is provided with a maximum water level line (2), and the top opening of the U-shaped sewage pipe (3) on the side away from the land-based aquaculture circular pond (1) is flush with the maximum water level line (2). The valve plate (8) includes a stainless steel gasket (81) connected to the push rod of the cylinder (5) and a silicone waterproof soft gasket (82) located at the front end of the stainless steel gasket (81). The pneumatic control circuit (7) includes a control air path (71) and a control circuit (72). The control air path (71) includes a high-pressure air source (9), an air supply pipe (10), an exhaust pipe (11), a two-position five-way solenoid valve (12), and a first air supply pipe (13) and a second air supply pipe (14) connected to the two air chambers of the cylinder (5). The two vent ports of the two-position five-way solenoid valve (12) are connected to the exhaust pipe (11). The air inlet of the two-position five-way solenoid valve (12) is connected to the high-pressure air source (9) through the air supply pipe (10). The two working air ports of the two-position five-way solenoid valve (12) are connected to the first air supply pipe (13) and the second air supply pipe (14) respectively. The control circuit (72) can control the two-position five-way solenoid valve (12) to switch. The output end of the high-pressure gas source (9) is provided with a pressure reducing valve (15) connected to the gas supply pipe (10), and the input end of the high-pressure gas source (9) is connected to the air compressor (16) through a pipe. The control circuit (72) includes a power supply, an intermediate relay KA, a dual-time relay KT, a normally closed jog switch SB1, a normally open jog switch SB2, and a YV coil of a two-position five-way solenoid valve (12). The normally closed jog switch SB1, the normally open jog switch SB2, and the intermediate relay KA coil are connected in series with each other and then electrically connected to the power supply. The normally open contact KA-1 of the intermediate relay KA is connected in series with the dual-time relay KT coil and then connected in parallel with the normally open jog switch SB2 through a wire. The YV coil of the two-position five-way solenoid valve (12) is connected in series with the normally open contact KT-1 of the dual-time relay KT and then connected in parallel with the intermediate relay KA coil through a wire.

2. A sewage discharge method using the intelligent sewage discharge device of the land-based industrialized aquaculture system as described in claim 1, characterized in that, Specifically, the following methods are used: the push rod of the cylinder (5) is controlled to retract by the pneumatic control circuit (7), which drives the valve plate (8) to slide from the branch pipe (41) into the three-way pipe (4), so that the riser of the U-shaped sewage pipe (3) is connected to the branch pipe (41) and the sewage outlet is opened; the push rod of the cylinder (5) is controlled to push forward by the pneumatic control circuit (7), which drives the valve plate (8) to slide from the three-way pipe (4) into the branch pipe (41), so that the valve plate (8) blocks the branch pipe (41) and closes the sewage outlet.

3. The sewage discharge method according to claim 2, characterized in that, The pneumatic control circuit (7) includes a control air path (71) and a control circuit (72). The control air path (71) includes a high-pressure air source (9), an air supply pipe (10), an exhaust pipe (11), a two-position five-way solenoid valve (12), and a first air supply pipe (13) and a second air supply pipe (14) connected to the two air chambers of the cylinder (5). The two vent ports of the two-position five-way solenoid valve (12) are connected to the exhaust pipe (11). The air inlet of the two-position five-way solenoid valve (12) is connected to the high-pressure air source (9) through the air supply pipe (10). The two working air ports of the two-position five-way solenoid valve (12) are connected to the first air supply pipe (13) and the second air supply pipe (14) respectively. The control circuit (72) can control the two-position five-way solenoid valve (12) to switch.

4. The sewage discharge method according to claim 2, characterized in that, The control circuit (72) includes a power supply, an intermediate relay KA, a dual-time relay KT, a normally closed jog switch SB1, a normally open jog switch SB2, and a YV coil of a two-position five-way solenoid valve (12). The normally closed jog switch SB1, the normally open jog switch SB2, and the intermediate relay KA coil are connected in series with each other and then electrically connected to the power supply. The normally open contact KA-1 of the intermediate relay KA is connected in series with the dual-time relay KT coil and then connected in parallel with the normally open jog switch SB2 through a wire. The YV coil of the two-position five-way solenoid valve (12) is connected in series with the normally open contact KT-1 of the dual-time relay KT and then connected in parallel with the intermediate relay KA coil through a wire.

5. The sewage discharge method according to claim 4, characterized in that, When it is necessary to open the sewage outlet, press the normally open jog switch SB2 to energize the coil of the intermediate relay KA. Then the normally open contact KA-1 of the intermediate relay KA closes, energizing the coil of the double time relay KT. After a certain time, the normally open contact KT-1 of the double time relay KT closes, energizing the YV coil of the two-position five-way solenoid valve (12). The energization of the YV coil of the two-position five-way solenoid valve (12) can attract the valve core of the two-position five-way solenoid valve (12) to slide, so that the air supply pipe (10) is connected to the second air supply pipe (14), and high-pressure gas is injected into the cavity at the right end of the cylinder (5) to retract the push rod of the cylinder (5), pulling the valve plate (8) in the branch pipe (41) backward to open the sewage outlet. When it is necessary to close the sewage outlet, press the normally closed jog switch SB1 to energize the coil of the intermediate relay KA and the coil of the dual time relay KT, and de-energize the YV coil of the two-position five-way solenoid valve (12). De-energizing the YV coil of the two-position five-way solenoid valve (12) causes the valve core of the two-position five-way solenoid valve (12) to reset under the elastic force of the spring, so that the air supply pipe (10) is connected to the first air supply pipe (13), and high-pressure gas is injected into the cavity at the left end of the cylinder (5) to push the push rod of the cylinder (5) forward, pushing the valve plate (8) into the branch pipe (41) to close the pipeline of the branch pipe (41) and realize the closure of the sewage outlet.

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