A double-layer driven non-variable volume pump body device and a regulation method

Abstract

The application discloses a double-layer driven non-variable volume pump body device and a regulation and control method, which comprises a shell, a fan wheel assembly, a first driving device, a wing plate and a second driving device. The shell is a horizontal cylinder, the fan wheel assembly is rotatably installed in the shell, the first driving device comprises a first motor and a first toothed belt, the first toothed belt is connected with the fan wheel assembly and the first motor, and the first motor drives the fan wheel assembly to rotate. The second driving device comprises a second motor, a second toothed belt and a driving assembly. The wing plate is provided with two, the second motor drives the second toothed belt to drive the driving assembly, the driving assembly drives the two wing plates to move close to or away from each other, and the driving assembly comprises a gear set. The gear set drives the wing plate to swing in the moving process. The wing plate is located at the rear end of the fan wheel assembly. The application forms a double-layer water pumping and oxygen increasing structure through the fan blades at the front end and the wing plates at the rear end, effectively improves the water flow rate and the dissolved oxygen content, inhibits the reproduction of algae, improves the water quality, and meets the low stress and precise regulation and control requirements of aquaculture.

Description

Technical Field

[0001] This invention relates to the fields of aquaculture and plain river network water management, and more specifically, to a dual-layer driven non-variable displacement pump device and its control method. Background Technology

[0002] Plain river networks are important infrastructure in plain areas, undertaking core functions such as flood control, water supply, and ecological maintenance. Their water environment quality directly affects regional ecological security and the physical and mental health of residents. Plain river networks are inherently characterized by gentle slopes, low flow velocities, and weak self-purification capabilities. Coupled with the large amount of domestic and industrial wastewater entering the rivers during urbanization and industrialization, they are prone to causing prominent problems such as river siltation, excessive algae growth, eutrophication, and even black and odorous water bodies. Existing research has confirmed that increasing water flow velocity and dissolved oxygen content is the core path to inhibiting algae growth, controlling eutrophication, and improving water quality.

[0003] Currently, the industry primarily improves the hydrodynamics of river networks through river regulation, pump station construction, and integrated commissioning of gates and pumps. However, traditional axial flow pumps suffer from inherent defects such as low efficiency, high energy consumption, severe cavitation, and poor operational stability under near-zero head conditions in plain river networks, making them unsuitable for the high-efficiency water delivery demands of low head and large flow rates. Simultaneously, the raceway aquaculture model widely used in aquaculture is prone to causing stress in fish with existing aeration pumps, and its insufficient precision in hydrodynamic control and high energy consumption fail to meet the self-purification and precise control requirements of aquaculture water. Existing pumping and aeration equipment is mostly variable displacement pumps, relying on changes in pump chamber volume to achieve fluid transport, resulting in extremely low efficiency under low head and large flow conditions. Non-variable displacement pumps, on the other hand, achieve transport through fluid kinetic energy transfer, making them more suitable for the characteristics of plain river networks and aquaculture conditions. However, existing non-variable displacement pumps generally suffer from poor adaptability to operating conditions, limited aeration effects, and significant disturbance. Therefore, a technical solution is needed to address these issues. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art, effectively increase water flow rate and dissolved oxygen content, inhibit algae reproduction, improve water quality, and adapt to the low-stress and precise control requirements of aquaculture, providing a dual-layer driven non-variable volume pump device and control method.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] This invention discloses a dual-layer driven non-variable displacement pump body device, including a housing, a fan wheel assembly, a first driving device, wing plates, and a second driving device. The housing is a horizontally oriented cylinder, and the fan wheel assembly is rotatably installed inside the housing. The first driving device includes a first motor and a first toothed belt, with the first toothed belt connecting the fan wheel assembly and the first motor. The first motor drives the fan wheel assembly to rotate. The second driving device includes a second motor, a second toothed belt, and a driving assembly. Two wing plates are provided. The second motor drives the second toothed belt to drive the driving assembly, and the driving assembly causes the two wing plates to move closer or further apart. The driving assembly includes a gear set, which drives the wing plates to swing during movement. The wing plates are located at the rear end of the fan wheel assembly.

[0007] Furthermore, the fan wheel assembly includes an impeller and a connecting cylinder. The impeller includes a plurality of fan blades arranged in annular arrangement. One end of each fan blade away from the central axis of the impeller is fixedly connected to the inner wall of the connecting cylinder. The connecting cylinder is connected to the inner wall bearing of the housing. The first toothed belt is connected to the outer peripheral wall of the connecting cylinder.

[0008] Furthermore, the drive assembly includes a fixed frame, a fixed block, and a slider. The fixed frame extends radially along the housing, and both ends of the fixed frame are fixedly connected to the inner wall of the housing. The fixed block is located in the middle of the fixed frame and is rotatably mounted with a connecting gear. There are two sliders, which are slidably mounted on the fixed frame. Each slider includes a rack that meshes with the connecting gear. The two sliders can synchronously move closer to or away from the fixed block. The wing plate is mounted on the slider.

[0009] Furthermore, the drive assembly includes a turntable and a drive frame. The turntable is rotatably mounted on the fixed frame, and the drive frame is slidably mounted on the fixed frame. One end of the drive frame is connected to one of the sliders, and the other end of the drive frame includes a guide groove. The guide groove is perpendicular to the fixed frame. The turntable includes a connecting rod, which is slidably mounted on the guide groove. The turntable is driven by the second toothed belt, and the rotation of the turntable causes the drive frame to slide radially.

[0010] Furthermore, the gear set includes a first gear, a second gear, and a drive gear. The fixed frame includes a toothed track extending along the length direction. The first gear and the second gear are rotatably mounted on the slider. The first gear meshes with the toothed track, and the second gear meshes with the first gear. The drive gear is fixedly mounted on the wing plate, and the drive gear meshes with the second gear. The slider includes a mounting plate, and the wing plate is rotatably mounted on the mounting plate.

[0011] Furthermore, each slider is equipped with two gear sets, which are located on both sides of the mounting plate. The first gear and the second gear each include large-diameter teeth and small-diameter teeth. The large-diameter teeth of the first gear mesh with the tooth path, and the large-diameter teeth of the second gear mesh with the small-diameter teeth of the first gear. The drive gear meshes with the small-diameter portion of the second gear.

[0012] Furthermore, the wing plate includes two inclined surfaces and an arc surface, the arc surface facing the fan wheel assembly, one end of the two inclined surfaces being connected to the arc surface, the other end of the two inclined surfaces being connected, and the thickness of the wing plate gradually decreasing in the direction away from the arc surface.

[0013] Furthermore, the two winglets are arranged vertically, one above the other, and the two winglets undergo mirror motion. The equation of motion for the winglet located at the upper position is:

[0014]

[0015] The equation of motion for the wingplate located at the lower position is:

[0016]

[0017] in, For the wingplate at the upper position axial direction with time The displacement change value, For the wingplate at the lower position axial direction with time The displacement change value, The heave amplitude of the wing plate (4) is given. Let chord length be 4 of the wing plate. The frequency of motion of the wingplate (4) The time of the wingplate's motion.

[0018] Furthermore, the instantaneous rotation directions of the two winglets are opposite, and the rotational oscillation equation of the upper winglet is:

[0019]

[0020] The rotational oscillation equation for the lower wing plate is:

[0021]

[0022] in, When the wingplate at the upper position swings around the rotation point, the swing angle changes with time. The change value, When the wingplate at the lower position swings around the rotation point, the swing angle changes with time. The change value.

[0023] This invention also discloses a dual-layer driven pump water aeration regulation method, comprising the following steps:

[0024] S1. Place the above-mentioned dual-layer driven non-variable displacement pump body device in a plain river channel, install a flow rate sensor and a dissolved oxygen sensor at the front end of the shell, and connect them to the control system.

[0025] S2. Set the initial operating values ​​for the equipment;

[0026] S3. Set the control data parameters and set the required flow rate for water body control in the control system. and dissolved oxygen content ;

[0027] S4, the flow rate sensor, and the dissolved oxygen sensor collected data at 60-minute intervals, recording the real-time flow rate as follows: Real-time dissolved oxygen is ;

[0028] S5. Calculate the dissolved oxygen percentage using the algorithm formula. The algorithm formula is as follows:

[0029]

[0030] S6. The system employs a graded control logic. When N > 0%, the water flow velocity is gradually increased; when N = 0%, the current speed is maintained; and when N < 0%, the water flow velocity is gradually decreased. At that time, gradually reduce the speed of the first drive unit until it is turned off. At the same time, gradually increase the rotational speed of the first drive device until the target flow rate is reached;

[0031] S7. Repeat steps S4-S6 until N=0%.

[0032] The beneficial effects of this invention are:

[0033] 1. The dual-layer driven non-variable displacement pump body device of the present invention can stably adapt to the low head and high flow rate water delivery requirements through the dual-layer drive structure of the fan wheel assembly and the wing plate, effectively improve the water flow velocity, inhibit algae reproduction and control water eutrophication. The wing plate adopts a streamlined structure, which greatly reduces water resistance, reduces disturbance, noise and vibration during the pumping process, and avoids stress response in farmed fish. At the same time, the gear set linkage realizes the synchronous compound motion of heave and swing, which accelerates the water body a second time and achieves efficient oxygenation, taking into account the needs of multiple scenarios such as plain river network management and aquaculture.

[0034] 2. The dual-layer driven pump aeration control method of the present invention is based on a dual-layer driven non-variable volume pump body device. It collects water body data synchronously at fixed periods and combines it with deviation algorithm for precise analysis. It adopts the logic of prioritizing the adjustment of the vane speed and assisting the adjustment of the fan wheel speed. It prioritizes the activation of the low energy consumption mode and starts the fan wheel drive as needed. While achieving the control target, it significantly reduces the operating energy consumption. The closed-loop circulation mode can respond to changes in water body conditions in real time, realize the long-term stable control of water quality parameters, adapt to the differentiated needs of multiple scenarios, and has strong practical and promotional value. Attached Figure Description

[0035] Figure 1 This is a perspective view of Example 1.

[0036] Figure 2 This is a cross-sectional view of Embodiment 1.

[0037] Figure 3 This is a schematic diagram of the fan wheel assembly in Embodiment 1.

[0038] Figure 4 This is a schematic diagram of a driving component in Embodiment 1.

[0039] Figure 5 This is a schematic diagram of a connection structure for the two wing plates in Embodiment 1.

[0040] Figure 6 This is a schematic diagram of a gear set in Example 1.

[0041] Reference numerals: 1. Shell; 11. First opening; 12. Second opening; 2. Fan wheel assembly; 21. Impeller; 211. Fan blade; 22. Connecting cylinder; 3. First drive device; 31. First motor; 32. First toothed belt; 4. Wing plate; 41. Inclined surface; 42. Arc surface; 5. Second drive device; 51. Second motor; 52. Second toothed belt; 53. Drive assembly; 531. Fixing frame; 5311. Toothed track; 532. Turntable; 5321. Connecting rod; 533. Fixing block; 5331. Connecting gear; 534. Slider; 5341. Rack; 5342. Mounting plate; 535. Drive frame; 5351. Guide groove; 536. Gear set; 5361. First gear; 5362. Second gear; 5363. Drive gear; 6. Net cover; 7. Scraper. Detailed Implementation

[0042] The technical solutions in this embodiment 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.

[0043] Example 1:

[0044] like Figures 1-6 As shown, this embodiment discloses a dual-layer driven non-variable displacement pump body device, which can be adapted to low-head, high-flow-rate pumping and aeration scenarios such as plain river network water environment management and aquaculture. It includes a housing 1, a fan wheel assembly 2, a first drive device 3, a wing plate 4, a second drive device 5, a screen 6, and a scraper 7. The housing 1 is a horizontally oriented cylindrical structure. The axial openings at both ends of the housing 1 are the inlet and outlet. The inner wall of the housing 1 has reserved bearing mounting positions and component fixing positions to ensure the installation stability of the internal structure. The side wall of the housing 1 has a first opening 11 and a second opening 12. Two openings 12 allow the first toothed belt 32 of the first driving device 3 and the second toothed belt 52 of the second driving device 5 to pass through, respectively. A mesh cover 6 is installed at the water inlet of the housing 1. The mesh cover 6 can block impurities in the water from entering the interior of the housing 1 and prevent the components inside the housing 1 from being stuck by impurities. A swingable scraper 7 is installed on the outside of the mesh cover 6. The scraper 7 is connected to the rotating shaft of the first driving device 3 through a linkage structure. It can swing on the outer side of the mesh cover 6 with the transmission of the first driving device 3, and can scrape and clean the debris attached to the surface of the mesh cover 6 to ensure the smooth flow of the water inlet.

[0045] The fan wheel assembly 2 is rotatably mounted inside the housing 1 on the side near the water inlet. The first drive device 3 is used to drive the fan wheel assembly 2 to rotate, thereby realizing the first layer of high-flow-rate foundation water pumping. Figure 3 As shown, the fan wheel assembly 2 includes an impeller 21 and a connecting cylinder 22. The impeller 21 includes three annularly arranged fan blades 211. The inner ends of the three fan blades 211 converge and are fixed to the central axis of the impeller 21. The ends of the fan blades 211 away from the central axis of the impeller 21 are welded and fixedly connected to the inner wall of the connecting cylinder 22. The outer wall of the connecting cylinder 22 is connected to the inner wall of the housing 1 through a bearing. The first drive device 3 includes a first motor 31 and a first toothed belt 32. The first toothed belt 32 connects the fan wheel assembly 2 and the first motor 31. The first toothed belt 32 is connected to the connecting cylinder 22. The outer peripheral wall of the connecting cylinder 22 has a first motor 31, which is a waterproof servo motor, fixedly installed on the top of the outer wall of the housing 1 by a bracket. The first toothed belt 32 is a synchronous transmission toothed belt, one end of which is sleeved on the output gear of the first motor 31 and sleeved on the outer toothed ring of the outer peripheral wall of the connecting cylinder 22. When the first motor 31 starts, it drives the fan wheel assembly 2 to rotate through the first toothed belt 32, sucking water from the inlet and pushing it to the outlet, realizing stable water delivery with low head and large flow, avoiding the defects of traditional axial flow pumps such as cavitation and low efficiency under near-zero head conditions.

[0046] The second drive device 5 includes a second motor 51, a second toothed belt 52, and a drive assembly 53. Both motors are IP68 waterproof servo motors. There are two wing plates 4. The second motor 51 drives the second toothed belt 52 to transmit the drive assembly 53. The drive assembly 53 drives the two wing plates 4 to move synchronously in a mirror motion, which can move them closer or further apart. The second motor 51 is a waterproof servo motor, which is fixedly installed on the outer side of the shell 1. The second toothed belt 52 connects the output end of the second motor 51 to the power input end of the drive assembly 53. The second motor 51 transmits the drive assembly 53 through the second toothed belt 52, which drives the two wing plates 4 to move closer or further apart. At the same time, the gear set 536 in the drive assembly 53 drives the wing plates 4 to swing synchronously during the movement, thereby realizing the second layer of water pumping and oxygenation. A three-dimensional mesh structure can be installed on the outside of the first drive device 3 and the second drive device 5 located outside the shell 1 to prevent impurities from contacting the transmission gears and toothed belt.

[0047] like Figure 2 , Figure 4 As shown, the drive assembly 53 includes a fixed frame 531, a turntable 532, a fixed block 533, a slider 534, a drive frame 535, and a gear set 536. The fixed frame 531 is a vertical column structure extending radially along the housing 1. The upper and lower ends of the fixed frame 531 are fixedly connected to the inner wall of the housing 1 by bolts. The entire assembly is located behind the fan wheel assembly 2. A guide channel extending in the length direction is opened in the center of the fixed frame 531, and a guide rod is installed in the guide channel. The fixed block 533 is located in the middle of the guide channel of the fixed frame 531. A connecting gear 5331 is rotatably mounted on the fixed block 533. There are two sliders 534. The slider 534 is slidably mounted on the guide rod of the fixed frame 531. The two sliders 534 are located on the upper and lower sides of the fixed block 533 respectively. Each slider 534 has a rack 5341 integrally formed on the side facing the fixed block 533. The rack 5341 extends along the length of the fixed frame 531. The left and right racks 5341 mesh with the left and right sides of the connecting gear 5331 respectively, so that the two sliders 534 can move in opposite directions synchronously through the transmission of the connecting gear 5331. The wing plate 4 is mounted on the slider 534, thereby driving the two wing plates 4 to move closer or further away synchronously, realizing the mirror synchronization of the movement of the two wing plates 4.

[0048] Turntable 532 is rotatably mounted on fixed frame 531. The rotating shaft of turntable 532 is connected to the output end of second motor 51 via second toothed belt 52, forming the power input end of drive assembly 53. Drive frame 535 is slidably mounted on fixed frame 531. The lower end of drive frame 535 is fixedly connected to slider 534 located above by bolts. The upper end of drive frame 535 is provided with guide groove 5351, which is perpendicular to fixed frame 531. Turntable 532 includes connecting rod 5321, which is located at an eccentric position on turntable 532. The connecting rod 5321 is slidably installed in the guide groove 5351. The rotation of the turntable 532 drives the drive frame 535 to slide radially. The second motor 51 drives the turntable 532 to rotate through the second toothed belt 52. The eccentrically set connecting rod 5321 slides in the guide groove 5351, driving the drive frame 535 to slide up and down along the radial direction of the fixed frame 531, thereby driving the upper slider 534 to move synchronously. Then, through the transmission of the connecting gear 5331, it drives the lower slider 534 to perform reverse synchronous reciprocating motion, ultimately realizing the mirror lifting and lowering motion of the two wing plates 4.

[0049] like Figure 5 , Figure 6 As shown, the gear set 536 is used to drive the wing plate 4 to swing synchronously while it moves up and down. The gear set 536 drives the wing plate 4 to swing during the movement. The wing plate 4 is located at the rear end of the fan wheel assembly 2. The side of the slider 534 away from the fan wheel assembly 2 is integrally formed with a mounting plate 5342. Each slider 534 is equipped with two gear sets 536. The two gear sets 536 are located on the left and right sides of the mounting plate 5342 respectively to ensure the stability of the wing plate 4 swinging. The gear set 536 includes a first gear 5361, a second gear 5362, and a drive gear 5363. The side of the fixing frame 531 away from the fan wheel assembly 2 is provided with a toothed track 5311 extending along the length direction. The first gear 5361 and the second gear 5362 are both stepped gears, both integrally formed with large-diameter teeth and small-diameter teeth. The first gear 5361 is rotatably mounted on the mounting plate 5342 through a rotating shaft. The large-diameter teeth of gear 5361 mesh with the tooth path 5311 on the fixed frame 531. The second gear 5362 is rotatably mounted on the mounting plate 5342 via a rotating shaft. The large-diameter teeth of the second gear 5362 mesh with the small-diameter teeth of the first gear 5361. The rotating shaft of the wing plate 4 is rotatably mounted on the mounting plate 5342. The drive gear 5363 is fixedly mounted on the rotating shaft of the wing plate 4, and the drive gear 5363 meshes with the small-diameter teeth of the second gear 5362. When the slider 534 slides up and down along the fixed frame 531, the first gear 5361 rolls along the tooth path 5311, driving the second gear 5362 to rotate. Then, through the transmission of the drive gear 5363, the wing plate 4 is driven to swing around its rotating shaft, realizing the synchronous linkage of the wing plate 4's lifting and swinging movements. No additional swinging drive component is required, simplifying the device structure, while ensuring the matching accuracy of the lifting and swinging movements.

[0050] like Figure 5 As shown, the wing plate 4 includes two inclined surfaces 41 and an arc surface 42. The end of the wing plate 4 facing the fan wheel assembly 2 is the arc surface 42, which is the water-facing end of the wing plate 4. One end of the two inclined surfaces 41 is connected to the arc surface 42. The back end is a wedge-shaped structure formed by the intersection of the two inclined surfaces 41. The thickness of the wing plate 4 gradually decreases from the arc surface 42 to the back end. This streamlined structure can significantly reduce water resistance, reduce water disturbance and noise during the pumping process, and at the same time form a stable thrust during swinging and rising and sinking, improving pumping efficiency. In aquaculture scenarios, it can effectively reduce the stress impact on fish.

[0051] In this embodiment, the two wing plates 4 move in a mirror image. The two wing plates 4 are arranged vertically up and down. Through precise control of the rotation speed and angle of the second motor 51, the heave motion and oscillation motion of the wing plates 4 are precisely matched. The specific motion equations are as follows: The motion equation of the wing plate 4 located in the upper position is:

[0052]

[0053] The equation of motion for the lower wing plate 4 is:

[0054]

[0055] in, For the wingplate at the upper position axial direction with time The displacement change value, For the wingplate at the lower position axial direction with time The displacement change value, The heave amplitude of the wing plate (4) is given. Let chord length be 4 of the wing plate. The frequency of motion of the wingplate (4) The time of the wingplate's motion.

[0056] The two winglets 4 rotate in opposite directions instantaneously. The rotational oscillation equation for the upper winglet 4 is:

[0057]

[0058] The rotational oscillation equation for the lower wing plate 4 is:

[0059]

[0060] in, When the wingplate at the upper position swings around the rotation point, the swing angle changes with time. The change value, When the wingplate at the lower position swings around the rotation point, the swing angle changes with time. The change value.

[0061] By precisely controlling the speed and angle of the second motor 51, the heave and swing motion of the wing plate 4 are precisely matched. Through the matching of the above motion equations, the two wing plates 4 can form a continuous and stable pump water jet while simultaneously heaving in the same direction. This jet provides secondary acceleration to the water pushed by the fan wheel assembly 2, further increasing the water flow rate. At the same time, the combined motion of the wing plates can form a controllable vortex in the water, significantly increasing the contact area between the water and the air, achieving efficient oxygenation, and meeting the dual needs of pumping water and oxygenation.

[0062] The device in this embodiment can achieve two working modes: under low demand conditions, only the first drive device 3 is activated, and the fan wheel assembly 2 is used to achieve a large flow rate and low energy consumption basic water pumping to meet the basic flow rate requirements of the water body; under high flow rate and high dissolved oxygen demand conditions, the first drive device 3 and the second drive device 5 are activated simultaneously. Through the dual-layer drive of the fan wheel assembly 2 and the wing plate 4, the synergistic effect of large flow rate water pumping and efficient oxygenation is achieved, which effectively improves the water flow rate and dissolved oxygen content, inhibits algae reproduction, improves water quality, and adapts to the low stress and precise control requirements of aquaculture.

[0063] Example 2:

[0064] This embodiment provides a dual-layer driven pump water aeration control method based on the dual-layer driven non-variable volume pump body device of Embodiment 1, including the following steps:

[0065] S1. Equipment Deployment and System Setup: Place the dual-layer driven non-variable displacement pump body device from Example 1 in the water body of a plain stream or aquaculture track, with the inlet of the shell 1 facing the direction of incoming water and the outlet facing the direction of outgoing water. The entire device is fixedly installed on the riverbed or hoisted by a support frame on the riverbank. The entire device is submerged 0.5m to 1.5m below the water surface to ensure pumping and oxygenation effects. Install a flow rate sensor and a dissolved oxygen sensor at the inlet of the shell 1. Connect the flow rate sensor, dissolved oxygen sensor, first motor 31, and second motor 51 to the PLC control system to complete the setup and communication debugging of the control system.

[0066] S2. Setting Initial Equipment Operating Values: This involves setting the initial operating parameters of the equipment within the control system, specifically including:

[0067] The initial rotational speed of the fan wheel assembly of the first drive unit 3 =0rad / s, the rated maximum speed is 120rad / s, and the speed adjustment increment is divided into two levels: 2rad / s (fine adjustment) and 10rad / s (rapid adjustment);

[0068] The initial motion gear of the wing assembly of the second drive device 5 is gear 3, corresponding to an initial motion frequency f=1Hz. The gear range is gear 1 to gear 5, with gear 1 corresponding to the lowest frequency of 0.5Hz and gear 5 corresponding to the highest frequency of 2.5Hz. The gear adjustment step is 1 gear / hour.

[0069] S3. Set the control data parameters: Set the required flow rate for water body control in the control system. and dissolved oxygen content In the context of plain river network management, the target flow velocity is... Set to 0.3 m / s ~ 0.8 m / s, target dissolved oxygen Set to 5mg / L~8mg / L; Target flow rate in aquaculture scenarios. Set to 0.1 m / s ~ 0.3 m / s, target dissolved oxygen The concentration is set to 6 mg / L to 10 mg / L, and can be flexibly adjusted according to the actual water conditions, treatment needs, or aquaculture species.

[0070] S4. Real-time Data Acquisition and Storage: The control system controls the flow velocity sensor and dissolved oxygen sensor to simultaneously acquire real-time flow velocity and dissolved oxygen data of the water body at a fixed sampling interval of 60 minutes, recording the real-time flow velocity as... Real-time dissolved oxygen records are as follows The collected data is stored in the storage module of the control system to form a historical control data ledger, which facilitates subsequent traceability and operating condition analysis.

[0071] S5. Data Calculation and Deviation Analysis: Calculate the dissolved oxygen content percentage N using the algorithm formula. The algorithm formula is as follows:

[0072]

[0073] At the same time, the control system will monitor the flow rate in real time. With target flow rate By comparing the differences, the flow velocity deviation value is calculated, providing data for subsequent graded regulation.

[0074] S6. Implementation of tiered control:

[0075] The control system employs a dual-parameter hierarchical control logic of "dissolved oxygen priority and flow rate assistance," performing precise control based on the dissolved oxygen deviation percentage N and the flow rate deviation value. The specific control rules are as follows:

[0076] Dissolved oxygen preferential regulation rule:

[0077] When N > 0%, it indicates that the real-time dissolved oxygen is lower than the target value, and the pump's aeration capacity needs to be gradually increased: firstly, adjust the gear of the second drive device 5, increasing the vane movement gear by 1 gear every 60 minutes until the gear is increased to the maximum of gear 5; if N > 0% is still satisfied after the gear is increased to gear 5, then turn on the first drive device 3 and gradually increase the fan wheel assembly speed in increments of 10 rad / s per hour until N = 0%;

[0078] When N=0%, it means that the real-time dissolved oxygen has reached the target value, and the control system controls the equipment to maintain the current gear and speed.

[0079] When N < 0%, it indicates that the real-time dissolved oxygen is higher than the target value. The pump's oxygenation capacity needs to be gradually reduced to reduce energy consumption: first adjust the gear of the second drive device 5, and reduce the wing plate movement gear by 1 gear every 60 minutes until the gear is reduced to the lowest gear; if N < 0% is still satisfied after the gear is reduced to the lowest gear, then turn off the second drive device 5.

[0080] Flow rate-assisted regulation rules:

[0081] when ≥ If the real-time flow rate has reached the target value, the first drive device 3 will not be turned on temporarily; if the first drive device 3 has been turned on, its speed will be gradually reduced by 2 rad / s per hour until it is turned off.

[0082] when < If the real-time flow rate does not reach the target value, the first drive device 3 is activated, and the rotational speed of the fan wheel assembly is gradually increased in increments of 2 rad / s per hour until... = .

[0083] S7. Cyclic Regulation and Steady-State Maintenance: The control system repeats steps S4 to S6, continuously collecting data, analyzing deviations, and implementing regulation at 60-minute intervals until the dissolved oxygen deviation percentage N = 0% and the real-time flow rate... = The system achieves the target control steady state. After reaching the steady state, the control system continues to perform cyclical data collection and comparison. When changes in water conditions (such as the influx of pollutants, changes in water level, changes in aquaculture density, etc.) cause parameter deviations, the corresponding control logic is automatically triggered to achieve long-term stable control of water flow velocity and dissolved oxygen.

[0084] The control method in this embodiment prioritizes dissolved oxygen through a graded control logic. It adopts a low-disturbance, low-energy-consumption vane pump aeration mode and activates the fan wheel drive only under high-demand conditions. This significantly reduces operating energy consumption while ensuring the needs of water treatment and aquaculture. At the same time, through dual-parameter closed-loop control, it achieves precise control of water flow velocity and dissolved oxygen, solving the problems of traditional equipment's inability to accurately control, high energy consumption, and poor adaptability to operating conditions.

[0085] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A dual-layer driven non-variable displacement pump body device, characterized in that, The system includes a housing (1), a fan wheel assembly (2), a first drive device (3), a wing plate (4), and a second drive device (5). The housing (1) is a horizontally oriented cylinder. The fan wheel assembly (2) is rotatably mounted inside the housing (1). The first drive device (3) includes a first motor (31) and a first toothed belt (32). The first toothed belt (32) connects the fan wheel assembly (2) and the first motor (31). The first motor (31) drives the fan wheel assembly (2) to rotate. The second drive device... (5) Includes a second motor (51), a second toothed belt (52), and a drive assembly (53). There are two wing plates (4). The second motor (51) drives the second toothed belt (52) to drive the drive assembly (53). The drive assembly (53) drives the two wing plates (4) to move closer or further away from each other. The drive assembly (53) includes a gear set (536). The gear set (536) drives the wing plate (4) to swing during the movement. The wing plate (4) is located at the rear end of the fan wheel assembly (2).

2. The dual-layer driven non-variable displacement pump body device according to claim 1, characterized in that, The fan wheel assembly (2) includes an impeller (21) and a connecting cylinder (22). The impeller (21) includes a plurality of fan blades (211) arranged in annular arrangement. One end of the fan blades (211) away from the central axis of the impeller (21) is fixedly connected to the inner wall of the connecting cylinder (22). The connecting cylinder (22) is connected to the inner wall bearing of the housing (1). The first toothed belt (32) is connected to the outer peripheral wall of the connecting cylinder (22).

3. The dual-layer driven non-variable displacement pump body device according to claim 1, characterized in that, The drive assembly (53) includes a fixed frame (531), a fixed block (533), and a slider (534). The fixed frame (531) extends radially along the housing (1). Both ends of the fixed frame (531) are fixedly connected to the inner wall of the housing (1). The fixed block (533) is located in the middle of the fixed frame (531). A connecting gear (5331) is rotatably mounted on the fixed block (5331). There are two sliders (534). The two sliders (534) are slidably mounted on the fixed frame (531). The slider (534) includes a rack (5341) that meshes with the connecting gear (5331). The two sliders (534) can move closer to or further away from the fixed block (533) synchronously. The wing plate (4) is mounted on the slider (534).

4. The dual-layer driven non-variable displacement pump body device according to claim 3, characterized in that, The drive assembly (53) includes a turntable (532) and a drive frame (535). The turntable (532) is rotatably mounted on the fixed frame (531), and the drive frame (535) is slidably mounted on the fixed frame (531). One end of the drive frame (535) is connected to one of the sliders (534), and the other end of the drive frame (535) is provided with a guide groove (5351). The guide groove (5351) is perpendicular to the fixed frame (531). The turntable (532) includes a connecting rod (5321), which is slidably mounted on the guide groove (5351). The turntable (532) is driven by the second toothed belt (52), and the rotation of the turntable (532) drives the drive frame (535) to slide radially.

5. A dual-layer driven non-variable displacement pump body device according to claim 3, characterized in that, The gear set (536) includes a first gear (5361), a second gear (5362), and a drive gear (5363). The fixed frame (531) is provided with a toothed track (5311) extending along the length direction. The first gear (5361) and the second gear (5362) are rotatably mounted on the slider (534). The first gear (5361) meshes with the toothed track (5311), and the second gear (5362) meshes with the first gear (5361). The drive gear (5363) is fixedly mounted on the wing plate (4). The drive gear (5363) meshes with the second gear (5362). The slider (534) includes a mounting plate (5342), and the wing plate (4) is rotatably mounted on the mounting plate (5342).

6. A dual-layer driven non-variable displacement pump body device according to claim 5, characterized in that, Each slider (534) is equipped with two gear sets (536), which are located on both sides of the mounting plate (5342). The first gear (5361) and the second gear (5362) both include large-diameter teeth and small-diameter teeth. The large-diameter teeth of the first gear (5361) mesh with the tooth path (5311), and the large-diameter teeth of the second gear (5362) mesh with the small-diameter teeth of the first gear (5361). The drive gear (5363) meshes with the small-diameter teeth of the second gear (5362).

7. A dual-layer driven non-variable displacement pump body device according to claim 1, characterized in that, The wing plate (4) includes two inclined surfaces (41) and an arc surface (42). The arc surface (42) faces the fan wheel assembly (2). One end of the two inclined surfaces (41) is connected to the arc surface (42), and the other end of the two inclined surfaces (41) is connected. The thickness of the wing plate (4) gradually decreases in the direction away from the arc surface (42).

8. A dual-layer driven non-variable displacement pump body device according to claim 1, characterized in that, The two wing plates (4) are arranged vertically, one above the other, and the two wing plates (4) are in mirror motion. The motion equation of the wing plate (4) located at the upper position is: The equation of motion for the wing plate (4) located at the lower position is: in, For the wingplate at the upper position axial direction with time The displacement change value, For the wingplate at the lower position axial direction with time The displacement change value, The heave amplitude of the wing plate (4) is given. Let chord length be 4 of the wing plate. The frequency of motion of the wingplate (4) The time of the wingplate's motion.

9. A dual-layer driven non-variable displacement pump body device according to claim 8, characterized in that, The two winglets (4) rotate in opposite directions at instantaneous intervals. The rotational oscillation equation of the upper winglet (4) is as follows: The rotational oscillation equation of the lower wing plate (4) is: in, When the wingplate at the upper position swings around the rotation point, the swing angle changes with time. The change value, When the wingplate at the lower position swings around the rotation point, the swing angle changes with time. The change value.

10. A method for regulating pump water oxygenation through a dual-layer drive, characterized in that, Includes the following steps: S1. Place the double-layer driven non-variable displacement pump body device according to any one of claims 1-9 in a plain stream, install a flow rate sensor and a dissolved oxygen sensor at the front end of the shell (1), and connect them to the control system. S2. Set the initial operating values ​​for the equipment; S3. Set the control data parameters and set the required flow rate for water body control in the control system. and dissolved oxygen content ; S4, the flow rate sensor, and the dissolved oxygen sensor collected data at 60-minute intervals, recording the real-time flow rate as follows: Real-time dissolved oxygen is ; S5. Calculate the dissolved oxygen percentage using the algorithm formula. The algorithm formula is as follows: S6. The system employs a graded control logic. When N > 0%, the water flow velocity is gradually increased; when N = 0%, the current speed is maintained; and when N < 0%, the water flow velocity is gradually decreased. At that time, gradually reduce the speed of the first drive device (3) until it is turned off. At the same time, gradually increase the rotation speed of the first drive device (3) until the target flow rate is reached; S7. Repeat steps S4-S6 until N=0%.

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