Net cage suspension depth-keeping control driver

Abstract

The invention discloses a net cage suspension depth-keeping control driver, and belongs to the technical field of motors, the net cage suspension depth-keeping control driver comprises a ballast assembly fixed on the side wall of a net cage and a driving mechanism used for driving the ballast assembly, and the ballast assembly comprises a ballast cylinder fixed on the side wall of the net cage; the driving mechanism comprises a case fixed on the top surface of the ballast cylinder, the toothed plate is connected in the case in a penetrating manner, a motor assembly is arranged in the case, one side of the motor assembly is connected with a speed reducer, one side of the speed reducer is connected with a first rotating shaft, and one end of the first rotating shaft is connected with an encoder; according to the invention, direct ventilation and heat dissipation can be realized on water, and the motor is contacted with seawater for heat dissipation under water, so that water ventilation and underwater flow field adaptability are both considered, and the heat dissipation efficiency and operation stability of the motor are improved; the overturning type sealing assembly on the side wall of the machine box can seal the opening of the cavity of the motor assembly, salt mist invasion or seawater invasion is blocked when the motor does not work, and the salt mist or seawater corrosion problem is relieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electric machines, more particularly, to a net cage suspension depth control driver. BACKGROUND

[0002] The depth control driving device is the core component of underwater facilities such as aquaculture net cages and underwater observation equipment. Its main function is to achieve precise control of the suspension depth of the equipment by adjusting the buoyancy and gravity balance of itself or the equipment it carries. In net cage culture, the device can flexibly adjust the depth of the net cage in the water according to environmental factors such as water temperature, light, and water quality, providing a suitable growth environment for cultured organisms, while reducing the impact of wind and waves on the net cage, ensuring the safety of culture. Its performance directly affects the stability, control accuracy and service life of the equipment, and is a key technology and equipment for realizing the intelligent and efficient operation of underwater facilities. In the prior art, the working principle of the depth control driving device is mainly based on ballast adjustment, that is, by changing the amount of ballast water inside the device to adjust the overall gravity, thereby achieving lifting control. Common methods include: using a motor to drive a piston or screw structure to move the piston in the ballast tank, and by changing the volume of the ballast tank to achieve water absorption or drainage, some devices are equipped with simple sensors to monitor water depth data feedback to control the operation of the motor, and the motor heat dissipation design mainly relies on fixed fins and natural convection in the closed cavity. Some devices in the water environment will enhance air circulation through ventilation holes. However, the motor structure of the existing depth control driving device has the following disadvantages: When the upper part of the net cage in the above-mentioned existing depth control driving device floats above sea level, the motor in the depth control driving device is exposed to the sea surface salt mist environment for a long time, which is prone to corrosion and damage of the shell due to the electrochemical corrosion of salt mist; when the net cage is completely submerged in seawater, the motor will be directly in contact with seawater. However, the high salinity and ionic activity of seawater can accelerate the corrosion failure of the shell, which not only affects the performance and service life of the motor, but also has a negative impact on the stable operation of the entire depth control driving device.

[0003] In view of this, we propose a net cage suspension depth control driver that can adapt to multiple working environments. SUMMARY

[0004] 1. Technical problem to be solved The purpose of the present application is to provide a net cage suspension depth control driver, which solves the technical problems raised in the background art.

[0005] 2. Technical solution

[0006] The technical scheme of the present application provides a net cage suspension depth control driver, which comprises a ballast assembly fixed to the side wall of the net cage and a driving mechanism for driving the ballast assembly, the ballast assembly comprises a ballast cylinder fixed to the side wall of the net cage, the top surface of the ballast cylinder is provided with a gas outlet hole for connecting an air pipe, the driving mechanism is connected to the top surface of the ballast cylinder, the bottom surface of the ballast cylinder is connected with a water inlet valve and a water outlet valve, the inside of the ballast cylinder is provided with a first piston, the top surface of the first piston is connected with a first toothed plate, the top of the first toothed plate is connected to the inside of the driving mechanism, the top surface of the first toothed plate is fixed with a baffle, the first toothed plate is engaged and driven to rise by the driving mechanism, so that the first piston rises to pump water, the first toothed plate is engaged and driven to fall by the driving mechanism, so that the second piston falls to drain water, the bottom surface of the first piston is provided with a liquid level sensor for monitoring the water level in the ballast cylinder. The driving mechanism comprises a case fixed to the top surface of the ballast cylinder, the first toothed plate is connected to the inside of the case, the inside of the case is provided with a motor assembly, one side of the motor assembly is connected with a speed reducer, one side of the speed reducer is connected with a first rotating shaft, one end of the first rotating shaft is connected with an encoder, the outer wall of the first rotating shaft is sleeved and fixed with a second gear, one side of the second gear is engaged and connected with one side of the first toothed plate, the inside of the case is provided with a sub-drive assembly with an engagement rotating structure, one side of the engagement rotating structure of the sub-drive assembly is engaged and connected with the other side of the first toothed plate, one end of the sub-drive assembly is connected to the side wall of the motor assembly, the inside of the motor assembly is provided with a cavity structure with an open side, the opening of the cavity structure of the motor assembly penetrates the outside of the case, the side wall of the case is provided with a sealing assembly with a turnover structure, the sealing assembly is used to close the opening of the cavity structure of the motor assembly by turning over, and the motor assembly is electrically connected with the liquid level sensor and the inside of the encoder.

[0007] Further, the motor assembly comprises a motor shell fixed to the inside of the case, the inside of the motor shell is a cavity structure with two sides through, the inside of the cavity structure of the motor shell is fixed with an inner cylinder with two ends through, the inside of the inner cylinder is provided with a stator, the inside of the stator is provided with a rotor, one end of the rotor penetrates the outside of the motor shell, one end of the rotor is connected to the inside of the speed reducer, the side wall of the motor shell is fixed with an end cover, one side of the cavity structure of the motor shell is connected with a guide frame, one side of the guide frame penetrates and is connected to the outside of the case, and is closed by the sealing assembly, the other side of the cavity structure of the motor shell is fixed with a side baffle, the side baffle is a circular arc structure, the outer wall of the inner cylinder is sleeved with a heat conduction cylinder, the outer wall of the heat conduction cylinder is fixed with a plurality of cooling fins, and the cooling fins are circular ring structures.

[0008] Further, the bottom height of the cavity structure of the motor shell is less than the bottom height of the guide frame, and the bottom height of the cavity structure of the motor shell is less than the bottom height of the guide frame, the bottom of the cavity structure of the motor shell is connected with a drain valve, one end of the drain valve is connected with a water outlet pipe, and one end of the water outlet pipe penetrates and is connected to the outside of the case.

[0009] Further, the motor assembly further comprises a flow guide component and an internal pressure magnetic pushing component, one side of the flow guide component is connected to the outer wall of the side cover in a penetrating manner, one end of the auxiliary drive assembly is connected to the side wall of the flow guide component, the flow guide component is internally provided with a rotating pushing structure, one end of the rotating pushing structure of the flow guide component is connected to rotate through one end of the auxiliary drive assembly, the top surface of the flow guide component is provided with the internal pressure magnetic pushing component, one end of the internal pressure magnetic pushing component is connected to the outer wall of the case in a penetrating manner, the side of the flow guide component close to the side cover is provided with a magnetically attractable plug-in blocking structure, the plug-in blocking structure of the flow guide component is pushed into the cavity structure of the motor shell through the internal pressure magnetic pushing component.

[0010] Further, the flow guide component comprises a flow guide box connected to the outer wall of the side cover in a penetrating manner, two opening structures are arranged on one side of the flow guide box, and the two opening structures of the flow guide box are connected to the top and bottom of the side cover in a penetrating manner respectively. The pushing structure comprises two impellers rotatably connected to the inside of the flow guide box, one end of the impeller penetrates the outer wall of the flow guide box, a first gear is fixedly sleeved on one end of the impeller, and the rotating end of the auxiliary drive assembly is meshedly connected to one side of the first gear. The plug-in blocking structure comprises a storage box fixed to the outer wall of the flow guide box, the storage box is connected to the inside of the side cover in a penetrating manner on one side, a magnetic sealing plate is inserted into the storage box, the magnetic sealing plate is magnetically attracted and pushed by the internal pressure magnetic pushing component, so that the magnetic sealing plate is inserted into the cavity structure of the motor shell, one side of the magnetic sealing plate is a comb structure, and the magnetic sealing plate is clamped to the outer wall of the heat dissipation fin through the comb structure.

[0011] Further, a plurality of sealing sheets are fixed to one side of the comb structure of the magnetic sealing plate, the sealing sheets are circular arc structures, the circular arc inner wall of the sealing sheet is of the same curvature as the circular arc outer wall of the heat conduction cylinder, and the circular arc outer wall of the sealing sheet is of the same curvature as the circular arc inner wall of the side cover.

[0012] Further, the internal pressure magnetic pushing component comprises a pushing cylinder connected to the inside of the case in a penetrating manner, one end of the pushing cylinder is connected to the outside of the case in a penetrating manner, the other end of the pushing cylinder is connected with an air pipe in a penetrating manner, one end of the air pipe is connected with an exhaust valve, one end of the exhaust valve is connected to the inside of the cavity structure of the motor shell in a penetrating manner, a second piston is inserted into the inside of the pushing cylinder, the second piston is pushed to translate by external water pressure, one end of the second piston is connected with a first connecting rod, the first connecting rod penetrates the inside of the pushing cylinder and one end of the first connecting rod is outwardly extended to the top of the flow guide box, a sliding pushing frame and a first pushing plate are slidably sleeved on the outer wall of the first connecting rod, a second tooth plate is fixed to the bottom surface of the first pushing plate, the second tooth plate is connected to the inside of the sealing assembly in a penetrating manner on one side, a fixing ring is fixedly sleeved on the outer wall of the first connecting rod, the two ends of the fixing ring are respectively connected with a first spring and a second spring, one end of the first spring away from the fixing ring is connected to the side wall of the sliding pushing frame, the two sides of the sliding pushing frame are respectively slidably attached to the two sides of the flow guide box, the two sides of the sliding pushing frame are respectively fixed with a magnetic plate, the magnetic plates are attached to the side wall of the storage box, and the two magnetic plates are respectively magnetically connected to the two sides of the magnetic sealing plate.

[0013] Further, the sealing assembly comprises a fixed box fixed to the side wall of the case, one side of the fixed box is rotationally connected with a third rotating shaft, one end of the third rotating shaft is rotationally connected to the side wall of the case, the outer wall of the third rotating shaft is fixed with a sealing plate, the outer wall of the third rotating shaft is sleeved with a fifth gear and a sixth gear, the top of the fifth gear is meshingly connected with the bottom surface of the second tooth plate, the sixth gear is arranged in the fixed box, the top surface of the fixed box is inserted with a third tooth plate, one side of the third tooth plate is meshingly connected with the sixth gear, and the third tooth plate is arranged at the bottom of the baffle.

[0014] Further, the auxiliary drive assembly comprises a support plate fixed to the inner bottom surface of the case, one side of the support plate is rotationally connected with a second rotating shaft, one end of the second rotating shaft is rotationally connected to the inner wall of the case, the outer wall of the second rotating shaft is sleeved with a fourth gear, one side of the first gear is meshingly connected with the first tooth plate, one end of the second rotating shaft is sleeved with a third gear, the third gear is meshingly connected with the two first gears, respectively, the top surface of the support plate is fixed with a fixed plate, one side of the fixed plate is fixed to the inner wall of the case, the fixed plate is penetrated by a pressure resistance component, the top end of the pressure resistance component penetrates the top surface of the case, the pressure resistance component is arranged between the baffle and the second rotating shaft, and the pressure resistance component is pushed to be attached to the outer wall of the second rotating shaft through the baffle, so as to frictionally slow down the second rotating shaft.

[0015] Further, the pressure resistance component is slidably penetrated and connected with an elastic telescopic rod connected to the top surface of the case, the bottom end of the elastic telescopic rod is connected with a second push plate, the bottom surface of the second push plate is connected with two second connecting rods, the second connecting rods are penetrated and connected to the inside of the fixed plate, the two second connecting rods are arranged on the two sides of the fourth gear, respectively, the bottom end of the second connecting rod is connected with a brake pad, the brake pad is in a circular arc structure, the brake pad is arranged at the top of the second rotating shaft, the outer wall of the second connecting rod is sleeved with a third spring, and the third spring is arranged between the bottom surface of the fixed plate and the top surface of the brake pad.

[0016] 3. Beneficial effects

[0017] One or more technical solutions provided in the technical scheme of the present application have at least the following technical effects or advantages: 1. The motor shell of the motor assembly adopts a cavity structure penetrating through both sides, and the guide frame realizes communication between the cavity and the outside. When on water, the motor assembly can directly ventilate and dissipate heat, and when underwater, the motor assembly can contact with seawater to dissipate heat. The motor assembly can ventilate on water and adapt to the flow field underwater, thereby improving the heat dissipation efficiency and operation stability of the motor. The turnover sealing assembly of the side wall of the case can seal the opening of the cavity of the motor assembly, so as to block the intrusion of salt mist or seawater when the motor is not working, thereby relieving the corrosion problem of salt mist or seawater.

[0018] 2. Through the cooperative design of the ballast assembly and the driving mechanism, the first piston in the ballast cylinder is engaged with the second gear of the driving mechanism and the auxiliary driving assembly through the first toothed plate to realize precise lifting to control water pumping and drainage; the liquid level sensor monitors the water level and the encoder records the rotation data of the rotating shaft, and the two cooperate to form feedback regulation to correct the volume and mass deviation of seawater and improve the depth setting accuracy; the double-sided engagement structure of the auxiliary driving assembly enhances the transmission stability of the first toothed plate to ensure the stable lifting of the net cage.

[0019] 3. The rotating push structure (impeller) of the flow guide component promotes fluid circulation under the driving of the auxiliary driving assembly to enhance heat dissipation; the internal pressure magnetic push component pushes the plug-in blocking structure (magnetic sealing plate) to be plugged into the cavity of the motor shell to realize adaptive switching of the water and underwater heat dissipation modes. When on water, the magnetic sealing plate is withdrawn, and air flows to dissipate heat; when underwater, the magnetic sealing plate is inserted to form a water circulation loop to improve the heat dissipation efficiency.

[0020] 4. The fourth gear and the second gear of the auxiliary driving assembly are respectively engaged with the two sides of the first toothed plate, and cooperate with the third gear to drive the impeller to enhance the transmission stability; the piezoresistive component pushes the second rotating shaft by the baffle to realize friction deceleration, improve the running accuracy and braking safety of the first toothed plate, and ensure the reliability of the net cage depth setting control. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is the overall structure diagram of the net cage suspension depth setting control driver and the connection state of the net cage.

[0022] Figure 2 It is the internal connection structure diagram of the ballast assembly and the driving mechanism.

[0023] Figure 3 It is the internal connection structure diagram of the driving mechanism and the first toothed plate.

[0024] Figure 4 It is the structure diagram of the motor assembly.

[0025] Figure 5 It is the internal connection structure diagram of the motor shell and the flow guide box.

[0026] Figure 6 It is the structure diagram of the magnetic sealing plate adhering to the outer wall of the heat conduction cylinder.

[0027] Figure 7 It is the connection structure diagram of the auxiliary driving assembly and the first toothed plate.

[0028] Figure 8 It is the connection structure diagram of the auxiliary driving assembly and the impeller.

[0029] Figure 9 It is the structure diagram of the piezoresistive component.

[0030] Figure 10 Structure sectional view of air cooling state inside motor assembly of the present application.

[0031] Figure 11 Structure sectional view of water flow cooling state inside motor assembly of the present application.

[0032] Figure 12 Structure sectional view of underwater closed state inside motor assembly of the present application.

[0033] Figure 13 Structure schematic view of sealing assembly of the present application.

[0034] Explanation of figure mark: 100, ballast assembly; 110, ballast cylinder; 111, air outlet hole; 120, water inlet valve; 130, water outlet valve; 140, first piston; 150, liquid level sensor; 160, first toothed plate; 161, baffle; 200, case; 300, motor assembly; 310, motor shell; 311, end cover; 312, water outlet pipe; 313, water discharge valve; 314, guide frame; 315, inner cylinder; 316, side cover; 320, stator; 330, rotor; 340, heat conduction cylinder; 341, cooling fin; 350, flow guide component; 351, flow guide box; 352, impeller; 3521, first gear; 353, storage box; 354, magnetic sealing plate; 3541, sealing sheet; 360, inner pressure magnetic pushing component; 361, pressure pushing cylinder; 362, second piston; 363, first connecting rod; 3631, first spring; 3632, fixed ring; 3633, second spring; 364, sliding pushing frame; 365, magnetic attraction plate; 366, second toothed plate; 3661, first pushing plate; 367, air pipe; 368, exhaust valve; 400, speed reducer; 500, second gear; 600, first rotating shaft; 700, encoder; 800, auxiliary drive assembly; 810, fixed plate; 820, support plate; 830, second rotating shaft; 831, third gear; 840, fourth gear; 850, piezoresistive component; 851, elastic telescopic rod; 852, second pushing plate; 853, second connecting rod; 854, third spring; 855, brake pad; 900, sealing assembly; 910, third rotating shaft; 920, fifth gear; 930, sealing plate; 940, sixth gear; 950, fixed box; 960, third toothed plate. DETAILED DESCRIPTION

[0035] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the following will be combined with the drawings in the embodiments of the present application to make a clear and complete description of the technical solutions in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0036] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the purpose of facilitating the description of the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation to the present application.

[0037] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium; it can be the communication inside two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0038] With reference to Figures 1-13 The net cage suspension depth control driver provided by the embodiments of the present application comprises a ballast assembly 100 fixed to the side wall of the net cage and a driving mechanism for driving the ballast assembly 100. The ballast assembly 100 comprises a ballast cylinder 110 fixed to the side wall of the net cage. An air outlet hole 111 for connecting an air pipe 367 is arranged on the top surface of the ballast cylinder 110. The driving mechanism is connected to the top surface of the ballast cylinder 110. A water inlet valve 120 and a water outlet valve 130 are connected to the bottom surface of the ballast cylinder 110. A first piston 140 is arranged inside the ballast cylinder 110. A first toothed plate 160 is connected to the top surface of the first piston 140. The first toothed plate 160 is connected to the inside of the driving mechanism through the top portion. A baffle 161 is fixed to the top surface of the first toothed plate 160. The first toothed plate 160 is driven to ascend by the driving mechanism, so that the first piston 140 ascends to draw water. The first toothed plate 160 is driven to descend by the driving mechanism, so that the second piston 362 descends to drain water. A liquid level sensor 150 is arranged on the bottom surface of the first piston 140 to monitor the water level inside the ballast cylinder 110. The driving mechanism comprises a machine box 200 fixed to the top surface of the ballast cylinder 110, a first tooth plate 160 connected to the inside of the machine box 200 in a penetrating manner, a motor assembly 300 arranged in the inside of the machine box 200, a reducer 400 connected to one side of the motor assembly 300, a first rotating shaft 600 connected to one side of the reducer 400, an encoder 700 connected to one end of the first rotating shaft 600, a second gear 500 sleeved and fixed to the outer wall of the first rotating shaft 600, the second gear 500 is meshed and connected with one side of the first tooth plate 160, a sub-driving assembly 800 with a meshing rotating structure is arranged in the inside of the machine box 200, one side of the meshing rotating structure of the sub-driving assembly 800 is meshed and connected with the other side of the first tooth plate 160, one end of the sub-driving assembly 800 is connected to the side wall of the motor assembly 300, a cavity structure with an open side is arranged in the inside of the motor assembly 300, the open side of the cavity structure of the motor assembly 300 penetrates the outside of the machine box 200, a sealing assembly 900 with a turnover structure is arranged on the side wall of the machine box 200, the sealing assembly 900 is used to close the open side of the cavity structure of the motor assembly 300 through turnover, and the motor assembly 300 is electrically connected with the liquid level sensor 150 and the inside of the encoder 700; The motor shell 310 of the motor assembly 300 adopts a cavity structure penetrating through two sides, the guide frame 314 realizes the communication between the cavity and the outside, direct ventilation and heat dissipation on water, heat dissipation through contact with seawater under water, consideration of ventilation on water and underwater flow field adaptability, and improvement of motor heat dissipation efficiency and operation stability; the turnover sealing assembly 900 on the side wall of the machine box 200 can close the open side of the cavity structure of the motor assembly 300, block the invasion of salt mist or the immersion of seawater when the motor does not work, and relieve the salt mist or seawater corrosion problem; Through the cooperative design of the ballast assembly 100 and the driving mechanism, the first piston 140 in the ballast cylinder 110 is meshed and driven by the second gear 500 and the sub-driving assembly 800 of the driving mechanism through the first tooth plate 160, precise lifting is realized to control water pumping and water discharging; the liquid level sensor 150 monitors the water level, and the encoder 700 records the rotating shaft rotation data, and feedback regulation is formed by cooperation of the two, the seawater volume and mass deviation is corrected, and the depth fixing accuracy is improved; the double-side meshing structure of the sub-driving assembly 800 enhances the driving stability of the first tooth plate 160, and ensures the stable lifting of the net cage.

[0039] In the embodiment, the motor assembly 300 comprises a motor shell 310 fixed inside the case 200, the motor shell 310 is internally provided with a cavity structure penetrating through two sides, the cavity structure of the motor shell 310 is internally fixed with an inner cylinder 315 penetrating through two ends, the inner cylinder 315 is internally provided with a stator 320, the stator 320 is internally provided with a rotor 330, one end of the rotor 330 penetrates outside the motor shell 310, one end of the rotor 330 is connected inside the speed reducer 400, the motor shell 310 is fixed with an end cover 311 on the side wall, one side of the cavity structure of the motor shell 310 is connected with a guide frame 314 penetrating through, the guide frame 314 is connected with the outside of the case 200 on one side and is closed by the sealing assembly 900, the other side of the cavity structure of the motor shell 310 is fixed with a side cover 316, the side cover 316 is in a circular arc structure, the outer wall of the inner cylinder 315 is sleeved with a heat conduction cylinder 340, the outer wall of the heat conduction cylinder 340 is fixed with a plurality of heat dissipation fins 341, the heat dissipation fins 341 are in a circular ring structure; The motor shell 310 is provided with a cavity structure penetrating through two sides, the heat conduction cylinder 340 and the annular heat dissipation fins 341 outside the inner cylinder 315 increase the heat dissipation area, air can be guided through the guide frame 314 and the outside when on water, and the air heat dissipation efficiency is improved; the circular arc structure of the side cover 316 reduces the underwater flow resistance. The guide frame 314 is closed by the sealing assembly 900, and salt mist is prevented from entering the cavity of the motor shell 310 in a non-working state, so that the contradiction between the sealing and heat dissipation of the traditional motor is solved, and the water protection and heat dissipation performance are considered.

[0040] In the embodiment, the bottom height of the cavity structure of the motor shell 310 is less than the bottom height of the guide frame 314, and the bottom of the cavity structure of the motor shell 310 is connected with a drain valve 313 penetrating through, one end of the drain valve 313 is connected with a water outlet pipe 312, and one end of the water outlet pipe 312 penetrates and is connected outside the case 200; the bottom of the cavity of the motor shell 310 is lower than the guide frame 314, so that water can be easily collected, the drain valve 313 and the water outlet pipe 312 can timely drain the seawater in the cavity, and corrosion of the motor parts caused by long-term immersion in water is avoided. The structure solves the problem that the traditional motor is difficult to drain water, reduces the risk of corrosion of the parts in the underwater environment, and prolongs the service life of the motor.

[0041] In the embodiment, the motor assembly 300 further comprises a flow guide component 350 and an internal pressure magnetic pushing component 360, one side of the flow guide component 350 is connected to the outer wall of the side cover 316 in a penetrating manner, one end of the auxiliary drive assembly 800 is connected to the side wall of the flow guide component 350, the flow guide component 350 is internally provided with a rotating pushing structure, one end of the rotating pushing structure of the flow guide component 350 is connected to rotate through one end of the auxiliary drive assembly 800, the top surface of the flow guide component 350 is provided with the internal pressure magnetic pushing component 360, one end of the internal pressure magnetic pushing component 360 is connected to the outer wall of the case 200 in a penetrating manner, the side of the flow guide component 350 close to the side cover 316 is provided with a magnetically attractable plug-in blocking structure, the plug-in blocking structure of the flow guide component 350 is pushed into the cavity structure of the motor shell 310 through the internal pressure magnetic pushing component 360; The rotating pushing structure (impeller 352) of the flow guide component 350 promotes fluid circulation under the driving of the auxiliary drive assembly 800, and enhances heat dissipation; the internal pressure magnetic pushing component 360 pushes the plug-in blocking structure (magnetic sealing plate 354) into the cavity of the motor shell 310 according to water pressure, so as to realize self-adaptive switching of the water and underwater heat dissipation modes. When on water, the magnetic sealing plate 354 is withdrawn, air flows and dissipates heat; when underwater, the magnetic sealing plate 354 is inserted to form a water circulation loop, so as to improve the heat dissipation efficiency.

[0042] In the embodiment, the flow guide component 350 comprises a flow guide box 351 connected to the outer wall of the side cover 316 in a penetrating manner, the flow guide box 351 is provided with two opening structures on one side, and the two opening structures of the flow guide box 351 are connected to the top and bottom of the side cover 316 in a penetrating manner respectively; the pushing structure comprises two impellers 352 rotatably connected to the inside of the flow guide box 351, one end of the impeller 352 penetrates the outer wall of the flow guide box 351, one end of the impeller 352 is sleeved with a first gear 3521, and the first gear 3521 is meshedly connected with the rotating end of the auxiliary drive assembly 800 on one side; the plug-in blocking structure comprises a storage box 353 fixed to the outer wall of the flow guide box 351, the storage box 353 is connected to the inside of the side cover 316 in a penetrating manner on one side, the magnetic sealing plate 354 is inserted into the inside of the storage box 353, the magnetic sealing plate 354 is magnetically attracted and pushed by the internal pressure magnetic pushing component 360, so as to be inserted into the cavity structure of the motor shell 310, one side of the magnetic sealing plate 354 is a comb structure, and the magnetic sealing plate 354 is clamped to the outer wall of the heat dissipation fin 341 through the comb structure; The double-opening design of the flow guide box 351 cooperates with the impeller 352 to enhance the circulation efficiency of air or seawater between the motor shell 310 and the flow guide box 351; the comb structure of the magnetic sealing plate 354 clamps the outer wall of the heat dissipation fin 341 to realize accurate blocking of the flow channel; the plug-in blocking structure is driven by the internal pressure magnetic pushing component 360 to ensure tight sealing when underwater, so as to improve the effectiveness of heat dissipation circulation.

[0043] In the embodiment, the magnetic sealing plate 354 is fixed with a plurality of sealing sheets 3541 on one side of the comb structure, the sealing sheet 3541 is a circular arc structure, the inner wall of the circular arc of the sealing sheet 3541 is the same as the outer wall of the heat conduction cylinder 340, and the outer wall of the circular arc of the sealing sheet 3541 is the same as the inner wall of the circular arc of the side cover 316. The arc-shaped sealing sheet 3541 on the comb structure of the magnetic sealing plate 354 matches the outer wall of the heat conduction cylinder 340 and the inner wall of the side cover 316, can keep close contact when extending into and retracting into the storage box 353, eliminate the gap, enhance the sealing performance of the flow channel, ensure the efficient flow of seawater in the circulating loop underwater, and improve the heat dissipation effect.

[0044] In the embodiment, the inner pressure magnetic pushing component 360 includes a pushing cylinder 361 connected through the inside of the case 200, one end of the pushing cylinder 361 is connected through the outside of the case 200, the other end of the pushing cylinder 361 is connected through the air pipe 367, one end of the air pipe 367 is connected with the exhaust valve 368, one end of the exhaust valve 368 is connected through the inside of the cavity structure of the motor shell 310, the second piston 362 is inserted into the inside of the pushing cylinder 361, the second piston 362 is pushed to translate by the external water pressure, one end of the second piston 362 is connected with the first connecting rod 363, the first connecting rod 363 penetrates through the inside of the pushing cylinder 361 and one end of the first connecting rod 363 extends outside the top of the flow guide box 351, the first connecting rod 363 is slidably sleeved with the sliding pushing frame 364 and the first pushing plate 3661, the bottom surface of the first pushing plate 3661 is fixed with the second tooth plate 366, one side of the second tooth plate 366 is connected through the inside of the sealing assembly 900, the outer wall of the first connecting rod 363 is sleeved with the fixing ring 3632, the two ends of the fixing ring 3632 are respectively connected with the first spring 3631 and the second spring 3633, one end of the first spring 3631 away from the fixing ring 3632 is connected to the side wall of the sliding pushing frame 364, the sliding pushing frame 364 is slidably attached to the two sides of the flow guide box 351, the two sides of the sliding pushing frame 364 are respectively fixed with the magnetic attraction plate 365, the magnetic attraction plate 365 is attached to the side wall of the storage box 353, and the two magnetic attraction plates 365 are respectively magnetically connected to the two sides of the magnetic sealing plate 354; The second piston 362 of the inner pressure magnetic pushing component 360 is pushed by the water pressure, drives the magnetic sealing plate 354 to act through the first connecting rod 363, the sliding pushing frame 364 and the magnetic attraction plate 365, realizes automatic sealing underwater; the first spring 3631 and the second spring 3633 respectively control the reset of the sliding pushing frame 364 and the second tooth plate 366, ensure that the magnetic sealing plate 354 is retracted and the sealing assembly 900 is opened on water. The air pipe 367 cooperates with the exhaust valve 368 to press the air in the pushing cylinder 361 into the cavity of the motor shell 310 underwater, to assist in discharging seawater, solves the problem that the traditional motor is difficult to automatically adapt to the change of water depth to switch states, and improves the environmental adaptability.

[0045] In the embodiment, the sealing assembly 900 comprises a fixed box 950 fixed to the side wall of the case 200, one side of the fixed box 950 is rotationally connected with a third rotating shaft 910, one end of the third rotating shaft 910 is rotationally connected to the side wall of the case 200, the outer wall of the third rotating shaft 910 is fixed with a sealing plate 930, the outer wall of the third rotating shaft 910 is sleeved and fixed with a fifth gear 920 and a sixth gear 940, the top of the fifth gear 920 is meshingly connected with the bottom surface of the second toothed plate 366, the sixth gear 940 is arranged in the fixed box 950, the top surface of the fixed box 950 is inserted with a third toothed plate 960, one side of the third toothed plate 960 is meshingly connected with the sixth gear 940, and the third toothed plate 960 is arranged at the bottom of the baffle 161. The third rotating shaft 910 of the sealing assembly 900 drives the sealing plate 930 to overturn, and the automatic opening and closing of the guide conveying frame 314 is realized through the meshing transmission of the second toothed plate 366 and the fifth gear 920 and the third toothed plate 960 and the sixth gear 940. When the motor is not working or reaches a predetermined depth, the sealing plate 930 closes the guide conveying frame 314 to prevent salt mist and seawater from entering; and the sealing plate 930 is opened during working to ensure heat dissipation, thereby solving the problem of inconvenient switching of the protection and heat dissipation of the traditional motor and further enhancing the protection effect on the motor.

[0046] In the embodiment, the auxiliary drive assembly 800 comprises a support plate 820 fixed to the inner bottom surface of the case 200, one side of the support plate 820 is rotationally connected with a second rotating shaft 830, one end of the second rotating shaft 830 is rotationally connected to the inner wall of the case 200, the outer wall of the second rotating shaft 830 is sleeved and fixed with a fourth gear 840, one side of the first gear 3521 is meshingly connected with the first toothed plate 160, one end of the second rotating shaft 830 is sleeved and fixed with a third gear 831, the third gear 831 is meshingly connected with the two first gears 3521 respectively, the top surface of the support plate 820 is fixed with a fixed plate 810, one side of the fixed plate 810 is fixed to the inner wall of the case 200, the fixed plate 810 is penetratingly provided with a pressure resistance component 850, the top end of the pressure resistance component 850 penetrates the top surface of the case 200, the pressure resistance component 850 is arranged between the baffle 161 and the second rotating shaft 830, and the pressure resistance component 850 is pushed to abut against the outer wall of the second rotating shaft 830 through the baffle 161, so as to frictionally slow down the second rotating shaft 830; The fourth gear 840 of the auxiliary drive assembly 800 is meshingly connected with the second gear 500 on the two sides of the first toothed plate 160, and the third gear 831 drives the impeller 352, so as to enhance the transmission stability; the pressure resistance component 850 is pushed to abut against the second rotating shaft 830 through the baffle 161, so as to realize frictional deceleration, improve the running accuracy and braking safety of the first toothed plate 160, and ensure the reliability of the net cage depth control.

[0047] In the embodiment, the piezoresistive component 850 is connected to the elastic telescopic rod 851 on the top surface of the case 200, the bottom end of the elastic telescopic rod 851 is connected to the second push plate 852, the bottom surface of the second push plate 852 is connected to two second connecting rods 853, the second connecting rods 853 are connected to the inside of the fixed plate 810, the two second connecting rods 853 are arranged on the two sides of the fourth gear 840 respectively, the bottom end of the second connecting rod 853 is connected to the brake pad 855, the brake pad 855 is in a circular arc structure, the brake pad 855 is arranged on the top of the second rotating shaft 830, the outer wall of the second connecting rod 853 is sleeved with the third spring 854, and the third spring 854 is arranged between the bottom surface of the fixed plate 810 and the top surface of the brake pad 855. The elastic telescopic rod 851 and the third spring 854 push the brake pad 855 to closely contact the second rotating shaft 830, and the arc-shaped brake pad 855 increases the friction area; the two second connecting rods 853 are symmetrically distributed, so that the second rotating shaft 830 is uniformly stressed on the two sides of the fourth gear 840. The structure realizes smooth and efficient deceleration, improves braking precision, reduces wear of the brake pad 855, and prolongs the service life of the component.

[0048] Specifically, as shown in the figure, Figure 1 The net cage is suspended on the sea surface through the ballast cylinder 110 of the ballast assembly 100, the net cage is multi-point anchored on the seabed through a plurality of anchor chains connected to the large holding power anchors around the net cage, a tension float ball is installed on the anchor chain for maintaining a constant tension state of the anchor chain, a middle stand is arranged in the middle of the net cage, a suction anchor vertical tension system is arranged at the bottom of the net cage to provide vertical tension support, the suction anchor vertical tension system is composed of a central mooring cable, a vertical winch, a suction anchor, a chain stopper and connecting accessories, the lower end of the central mooring cable is connected to the suction anchor, the upper end reaches the upper end of the middle stand through the anchor chain pipe in the middle stand, is connected to the vertical winch after passing through the chain stopper, the suction anchor penetrates into the seabed to form a fixed end to provide pulling resistance, then the ballast water volume of the ballast assembly 100 is adjusted to control the lifting of the net cage, and finally the vertical winch adjusts the tension of the central mooring cable to control the suspension depth of the net cage. Then, as shown in the figure, Figures 2-13 The motor assembly 300 is located above the sea surface, the whole motor assembly 300 utilizes the case 200 to provide a closed installation space, and the internal cavity structure of the motor shell 310 is connected to the outside through the guide frame 314, so that the inside of the motor assembly 300 can be directly ventilated and cooled with the outside. When the motor assembly 300 is arranged above the sea surface and is not worked for a long time, in order to prevent corrosion of sea salt mist, the motor assembly 300 drives the first toothed plate 160 to descend, so that the baffle 161 pushes the third toothed plate 960, the third rotating shaft 910 is driven to rotate through meshing, so that the sealing plate 930 is turned over to seal the guide frame 314, so that the inside of the motor assembly 300 is sealed, and at the same time the second toothed plate 366 moves to the inside of the case 200 and compresses the second spring 3633. The starting motor assembly 300 adjusts the amount of ballast water of the ballast assembly 100 to make the net cage descend, the baffle 161 separates from the third toothed plate 960 as the first toothed plate 160 rises, the compressed second spring 3633 pushes the second toothed plate 366 to move and drives the third rotating shaft 910 to rotate, the sealing plate 930 flips to open the guide frame 314, and when the starting rotor 330 rotates inside the stator 320, the generated heat energy is directly transmitted to the heat conduction cylinder 340 through the inner cylinder 315, and the heat is dissipated by the heat dissipation fins 341 in full contact with the air filled in the cavity of the motor shell 310. At this time, the rotor 330 drives the speed reducer 400 to rotate the first rotating shaft 600, the first rotating shaft 600 drives the second gear 500 to rotate, the second gear 500 engages to drive the first toothed plate 160 to rise, and at the same time, the fourth gear 840 on the other side of the first toothed plate 160 also engages the first toothed plate 160, so that the first toothed plate 160 is driven on both sides, improving the transmission accuracy and the stability of the first toothed plate 160 rising; The first toothed plate 160 pulls the first piston 140 inside the ballast cylinder 110 to rise, the space at the top of the first piston 140 decreases, and the air in the space is discharged through the air outlet hole 111 connected with the air pipe 367. The bottom of the first piston 140 uses negative pressure and the water inlet valve 120 to suck seawater into the inside of the ballast cylinder 110, the weight in the ballast cylinder 110 increases, and the net cage is caused to sink. The water inlet valve 120 is a one-way valve with a flow direction towards the inside of the ballast cylinder 110. The encoder 700 records the rotation data of the first rotating shaft 600, so that the rising height of the first toothed plate 160 and the first piston 140 driven by the second gear 500 can be known, and the volume and mass of seawater sucked into the ballast cylinder 110 can be calculated. At the same time, the liquid level sensor 150 at the bottom of the first piston 140 monitors the water level of seawater entering the inside of the ballast cylinder 110, calculates the volume and mass of seawater actually sucked into the ballast cylinder 110, and corrects and compensates according to the volume and mass of seawater actually sucked into the ballast cylinder 110. According to the compensation data, the motor assembly 300 and the speed reducer 400 continue to drive the first rotating shaft 600 to rotate, so that the ballast cylinder 110 continues to suck water into the inside; During the meshing and rotating of the second gear 500 and the fourth gear 840 with the toothed plate, the second rotating shaft 830 drives the third gear 831 to rotate, the third gear 831 meshes and rotates two first gears 3521, so that the impeller 352 inside the flow guide box 351 rotates quickly, so that the air in the cavity of the motor shell 310 and the flow guide box 351 flows quickly, and the heat dissipation effect of the motor assembly 300 during operation is improved; When the net cage is lowered into the water by the ballast cylinder 110, the motor assembly 300 is also lowered into the sea with the net cage 200, and seawater enters the motor housing 310 cavity and the flow guide box 351 through the guide frame 314, thereby dissipating heat inside the motor assembly 300. After entering the water, the second piston 362 is translated in the pressure pushing cylinder 361 under the thrust of water pressure, the first connecting rod 363 pushes the sliding pushing frame 364 to translate the fixed ring 3632, the first spring 3631 pulls the sliding pushing frame 364 to move, and the two magnetic attraction plates 365 simultaneously use magnetic force to attract and push the magnetic sealing plate 354 to insert into the cavity structure of the motor housing 310. The sealing sheet 3541 on the magnetic sealing plate 354 is attached to the outer wall of the heat conduction cylinder 340, and the comb structure of the magnetic sealing plate 354 is clamped and closed on the outer wall of the heat dissipation fin 341, thereby blocking the cavity structure inside the motor housing 310, forming a one-way water circulation loop inside the motor housing 310 and the flow guide box 351, and cooperating with the rotation of the impeller 352 to promote the rapid circulation of seawater in the motor housing 310 and the flow guide box 351, thereby improving the heat dissipation effect of the motor assembly 300 during driving in seawater. When the motor assembly 300 continues to descend with the ballast cylinder 110 and is about to reach the predetermined long-term working depth, the water pressure further pushes the second piston 362 to translate in the pressure pushing cylinder 361, the bottom connecting rod pushes the fixed ring 3632, the second spring 3633 pushes the second tooth plate 366 to move, and the sealing plate 930 is driven to flip to close the guide frame 314, so that the cavity structure of the motor housing 310 is closed, and the second piston 362 continues to move to push the air in the pressure pushing cylinder 361. The air enters the cavity structure inside the motor housing 310 and the flow guide box 351 through the air pipe 367 and the exhaust valve 368, so that the seawater in the cavity structure inside the motor housing 310 and the flow guide box 351 is discharged through the drain valve 313 and the water outlet pipe 312. The exhaust valve 368 and the drain valve 313 are both one-way valves to prevent backflow, so that the motor assembly 300 is always in a closed cavity structure after long-term stop working in seawater, preventing corrosion caused by long-term immersion in seawater. When the long-term breeding is completed and the net cage is raised, the motor assembly control ballast cylinder 110 is started to raise, and the seawater in the ballast cylinder 110 is discharged through the water outlet valve 130. The water outlet valve 130 is a one-way valve with a flow direction towards the outside of the ballast cylinder 110. The ballast cylinder 110 uses buoyancy to raise the net cage and the motor assembly 300. The second piston 362 is not pushed by the seawater pressure, the sliding pushing frame 364 is reset, the sealing plate 930 is flipped to open the ventilation and heat dissipation, and the magnetic attraction plate 365 drives the magnetic sealing plate 354 to retract into the storage box 353. When the first toothed plate 160 is about to complete the seawater discharge, the baffle 161 stops and pushes the elastic telescopic rod 851 inserted into the case 200, the elastic telescopic rod 851 elastically pushes the second push plate 852, so that the two brake pads 855 are in friction with the outer wall of the second rotating shaft 830, to slow down the relative displacement rate between the first toothed plate 160 and the motor assembly 300, the outer wall of the second rotating shaft 830 is coated with a friction resistance material, and is used to increase the friction between the second rotating shaft 830 and the brake pad 855, to ensure the stability of the cooperation between the motor assembly 300 and the auxiliary drive assembly 800 to drive the first toothed plate 160.

[0049] It should be noted that, in this paper, the relationship terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between the entities or operations. The electrical components appearing in this paper are all electrically connected with the host computer and 220V mains, and the host computer is a common existing technology that plays a control role. The contents not described in detail in this specification belong to the existing technology known to those skilled in the art.

[0050] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A net cage suspension depth control drive, characterized by: The utility model provides a kind of net cage, including fixed in the side wall of net cage ballast component and the drive mechanism for driving ballast component, the ballast component includes fixed in the side wall of net cage ballast cylinder, ballast cylinder top surface is equipped with the air outlet hole for external connection air pipe, drive mechanism is connected to ballast cylinder top surface, ballast cylinder bottom surface is connected with water inlet valve and water outlet valve, ballast cylinder inside is provided with first piston, first piston top surface is connected with first toothed plate, first toothed plate top is connected to the inside of drive mechanism, first toothed plate top surface is fixed with baffle, first toothed plate is engaged by drive mechanism and is driven to rise, to make first piston rise and pump water, first toothed plate is engaged by drive mechanism and is driven to descend, to make second piston descend and drain water, first piston bottom surface is provided with liquid level sensor for monitoring the water level in ballast cylinder inside; Drive mechanism, including fixed in the top surface of ballast cylinder case, first toothed plate is connected to the inside of case, case inside is provided with motor assembly, motor assembly one side is connected with speed reducer, speed reducer one side is connected with first rotary shaft, first rotary shaft one end is connected with encoder, first rotary shaft outer wall is sleeved and fixed with second gear, second gear one side and first toothed plate one side are engagedly connected, case inside is provided with the auxiliary drive component with meshing rotation structure, the meshing rotation structure of auxiliary drive component one side and first toothed plate other side are engagedly connected, auxiliary drive component one end is connected to the side wall of motor assembly, the cavity structure with one side being open is provided in the inside of motor assembly, the opening of the cavity structure of motor assembly is penetrated to the outside of case, the sealing component of turnover structure is provided in the side wall of case, the opening of the cavity structure of motor assembly is closed by the sealing component, motor assembly and liquid level sensor and the inside of encoder are electrically connected.

2. The net cage suspension depth control drive of claim 1, wherein: The motor assembly includes a motor housing fixed inside the case, the motor housing has a cavity structure with both sides being through, the cavity structure of the motor housing is fixed with an inner cylinder with both ends being through, the inner cylinder is provided with a stator inside, the stator is provided with a rotor inside, the rotor is penetrated to the outside of the motor housing at one end, the rotor is connected to the inside of the speed reducer at one end, the motor housing is fixed with an end cover on the side wall, the cavity structure of the motor housing is connected with a guide frame on one side, the guide frame is penetrated to the outside of the case on one side and is closed by the sealing component, the other side of the cavity structure of the motor housing is fixed with a side baffle, the side baffle is a circular arc structure, the outer wall of the inner cylinder is sleeved with a heat conduction cylinder, the outer wall of the heat conduction cylinder is fixed with a plurality of cooling fins, and the cooling fins are circular ring structures.

3. Cage suspension depth control drive according to claim 2, characterized in that: The bottom height of the motor housing cavity structure is less than the bottom height of the guide frame, and the bottom height of the motor housing cavity structure is less than the bottom height of the guide frame, the motor housing cavity structure is connected with a drain valve at the bottom, the drain valve is connected with a water outlet pipe at one end, and the water outlet pipe is penetrated to the outside of the case at one end.

4. Cage suspension depth control drive according to claim 3, characterized in that: The motor assembly also includes a flow guide component and an internal pressure magnetic push component. One side of the flow guide component is connected to the outer wall of the side cover, and one end of the auxiliary drive component is connected to the side wall of the flow guide component. The flow guide component is provided with a rotating pushing structure. One end of the rotating pushing structure of the flow guide component is connected to the rotation via the other end of the auxiliary drive component. An internal pressure magnetic push component is provided on the top surface of the flow guide component. One end of the internal pressure magnetic push component is connected to the outer wall of the chassis. A magnetically attractive insertion structure is provided on the side of the flow guide component near the side cover. The insertion structure of the flow guide component is pushed and inserted into the cavity structure of the motor housing by the internal pressure magnetic push component.

5. Cage suspension depth control drive according to claim 4, characterized in that: The flow guiding component includes a flow guiding box that is connected to the outer wall of the side cover. The flow guiding box has two opening structures on one side, and the two opening structures of the flow guiding box are respectively connected to the top and bottom of the side cover. The pushing structure includes two impellers rotatably connected inside the guide box. One end of the impeller penetrates through the outer wall of the guide box, and a first gear is fixedly sleeved on one end of the impeller. One side of the first gear is meshed with the rotating end of the auxiliary drive assembly. The insertion structure includes a storage box fixed to the outer wall of the flow guide box. One side of the storage box is connected to the inside of the side cover. A magnetic sealing plate is inserted into the storage box. The magnetic sealing plate is magnetically pushed by the internal pressure magnetic push component so that the magnetic sealing plate is inserted into the cavity structure of the motor housing. One side of the magnetic sealing plate has a comb tooth structure. The magnetic sealing plate is snapped onto the outer wall of the heat sink through the comb tooth structure.

6. The net cage suspension depth control drive of claim 5, wherein: Multiple sealing plates are fixed on one side of the comb-tooth structure of the magnetic sealing plate. The sealing plates have an arc-shaped structure. The arc of the inner wall of the sealing plate is the same as the arc of the outer wall of the heat-conducting cylinder. The arc of the outer wall of the sealing plate is the same as the arc of the inner wall of the side cover.

7. The net cage suspension depth control drive of claim 4, wherein: The internal pressure magnetic thrust component includes a thrust cylinder that penetrates the interior of the chassis. One end of the thrust cylinder is connected to the exterior of the chassis, and the other end is connected to an air pipe. One end of the air pipe is connected to an exhaust valve, and the other end of the exhaust valve is connected to the cavity structure inside the motor housing. A second piston is inserted inside the thrust cylinder. The second piston is pushed and moved by external water pressure. One end of the second piston is connected to a first connecting rod. The first connecting rod penetrates the interior of the thrust cylinder and one end extends outward to the top of the guide box. The outer wall of the first connecting rod is slidably sleeved. It has a sliding pusher and a first pusher plate. A second toothed plate is fixed on the bottom surface of the first pusher plate. One side of the second toothed plate is connected through to the inside of the sealing assembly. A fixing ring is sleeved and fixed on the outer wall of the first connecting rod. A first spring and a second spring are respectively connected to the two ends of the fixing ring. The end of the first spring away from the fixing ring is connected to the side wall of the sliding pusher. The two sides of the sliding pusher slide against the two sides of the flow guide box. Magnetic plates are fixed on the bottom surface of both sides of the sliding pusher. The magnetic plates are attached to the side wall of the storage box. The two magnetic plates are magnetically connected to the two sides of the magnetic sealing plate.

8. A net cage buoyancy controlling drive according to claim 7, c h a r a c t e r i z e d in that The sealing assembly includes a fixed box fixed to the side wall of the chassis. A third rotating shaft is rotatably connected to one side of the fixed box. One end of the third rotating shaft is rotatably connected to the side wall of the chassis. A sealing plate is fixed to the outer wall of the third rotating shaft. A fifth gear and a sixth gear are sleeved and fixed to the outer wall of the third rotating shaft. The top of the fifth gear is meshed with the bottom surface of the second gear plate. The sixth gear is located inside the fixed box. A third gear plate is inserted into the top surface of the fixed box. One side of the third gear plate is meshed with the sixth gear. The third gear plate is located at the bottom of the baffle.

9. The net cage suspension depth control drive of claim 5, wherein: The auxiliary drive assembly comprises a support plate fixed to the inner bottom surface of the cabinet, a second rotating shaft rotatably connected to one side of the support plate, the outer wall of the second rotating shaft being fixedly sleeved with a fourth gear, the first gear being meshingly connected between one side of the first gear plate, the first end of the second rotating shaft being fixedly sleeved with a third gear, the third gear being meshingly connected between the two first gears, the top surface of the support plate being fixed with a fixed plate, one side of the fixed plate being fixed to the inner wall of the cabinet, the pressure resistance component being provided inside the fixed plate and penetrating through the top surface of the cabinet, the pressure resistance component being provided between the baffle and the second rotating shaft, the pressure resistance component being pushed against the outer wall of the second rotating shaft through the baffle, and the pressure resistance component being used for frictional speed reduction of the second rotating shaft.

10. Cage suspension depth control drive according to claim 9, characterized in that: The pressure resistance component is slidably connected to the elastic telescopic rod penetrating through the top surface of the cabinet, the bottom end of the elastic telescopic rod being connected with a second push plate, the bottom surface of the second push plate being connected with two second connecting rods, the second connecting rods penetrating through the inside of the fixed plate, the two second connecting rods being respectively and separately arranged on the two sides of the fourth gear, the bottom end of the second connecting rod being connected with a brake pad, the brake pad being of a circular arc structure, the brake pad being arranged on the top of the second rotating shaft, the outer wall of the second connecting rod being sleeved with a third spring, the third spring being arranged between the bottom surface of the fixed plate and the top surface of the brake pad.

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