Turbine and centrifugal driving fish pump

Abstract

The invention discloses a turbine and a centrifugal driving fish suction pump, relates to the technical field of fish suction pumps, and aims to solve the design defects of a traditional fish suction pump turbine that the survival rate of fish bodies is low due to the fact that the shearing force of blades is too strong, and abrasion is aggravated due to eccentric vibration caused by a symmetrical double-blade structure; in order to solve the technical problems that a turbine body adopts a spiral solid structure design, adopts a flow channel layout with a single inlet and a single outlet, and combines flow field optimization of a special-shaped suction inlet in the front face and dynamic balance of a concentricity compensation structure on the back face, the flow field of the special-shaped suction inlet in the front face is optimized, and the flow field of the special-shaped suction inlet in the back face is optimized. Therefore, the live fish transportation efficiency is improved, the problems of epidermis damage, viscera displacement and the like caused by mechanical extrusion or collision of fish bodies are solved, meanwhile, the hydraulic conveying efficiency is remarkably improved, and the equipment loss and the operation cost in the breeding process are effectively reduced.

Description

Technical Field

[0001] This invention relates to the field of fish suction pump technology, and more specifically, to a turbine and centrifugal driven fish suction pump. Background Technology

[0002] A fish suction pump is a device that uses water or air as a medium to specifically suction and transport live fish. Most existing fish suction pumps are divided into centrifugal fish suction pumps, jet fish suction pumps, vacuum fish suction pumps, and submersible fish suction pumps. Centrifugal fish suction pumps generate negative pressure through the high-speed rotation of a turbine, which draws the fish and water mixture into the pump. The turbine converts mechanical energy into the kinetic energy of the water, and the water flow moves the fish, thus realizing the device of suction and transporting fish.

[0003] Traditional fish pump designs suffer from multiple technical defects in turbine structures: the shear force exerted by the blades on the fish is too high, easily causing skin damage and even internal organ damage, directly leading to a decrease in survival rate; at the same time, turbines with symmetrical double-blade structures generate significant eccentric forces when rotating at high speeds, causing increased pump vibration and mechanical wear, which not only shortens the service life of the equipment but also increases maintenance costs; in addition, although wide flow channel designs help reduce the risk of fish getting stuck, the turbine efficiency is limited, and the speed must be increased to compensate for insufficient head, which in turn prolongs the residence time of the fish in the pump, exacerbates the hypoxia stress response, and forms a vicious cycle of "efficiency-damage".

[0004] In view of this, we propose a turbine and centrifugal driven fish suction pump. Summary of the Invention

[0005] The purpose of this invention is to provide a turbine and centrifugal driven fish suction pump to solve the design defects of traditional fish suction pump turbines, including: excessive blade shearing force causing fish damage and resulting in low fish survival rate; symmetrical double blade structure causing eccentric vibration and aggravating wear; wide flow channel requiring high speed to compensate for head but prolonging the fish's residence time, forming a vicious cycle of efficiency and damage.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a turbine and centrifugal driven fish suction pump, comprising a turbine body, a fish inlet channel opened on one side of the turbine body, a shaped channel disposed outside the turbine body, an installation channel located on the other side of the turbine body, and a concentric compensation channel, wherein the shaped channel is opened on the arc-shaped outer wall of the turbine body, the inner wall of the shaped channel is arc-shaped, the two ends of the inner wall of the shaped channel have different diameters, and the diameter of the inner wall of the shaped channel gradually decreases.

[0007] This invention employs a helical solid structure design for the turbine body and a single inlet and outlet flow channel layout. Combined with flow field optimization at the front irregular inlet and dynamic balance of the concentricity compensation structure at the rear, a stable helical propulsion flow field is formed under low-speed operation. In actual operation, the speed at which live fish pass through the pump body is significantly increased, and problems such as skin damage and internal organ displacement caused by mechanical compression or collision are fundamentally improved, with almost no deaths due to pump damage. The pump body vibration amplitude is greatly reduced, the operational stability is significantly enhanced, the wear rate of key components is significantly slowed down, and the overall service life of the equipment is effectively extended. At the same time, the hydraulic conveying efficiency is significantly improved, and the head increase per unit energy consumption is outstanding. It can better meet the needs of high-density, high-frequency live fish transportation in large-scale aquaculture farms, effectively reducing equipment wear and operating costs during the aquaculture process.

[0008] A centrifugal-driven fish suction pump includes a pump body mechanism, a protection mechanism, and a separation mechanism. The turbine body is installed inside the pump body mechanism, and the protection mechanism is connected to the pump body mechanism.

[0009] The pump body mechanism includes a pump body shell, an inlet pipe and an outlet pipe connected to the pump body shell, reinforcing ribs for strengthening the outlet pipe and the pump body shell, and a motor for driving the turbine body to run. The motor and the pump body shell are both fixedly connected to a base.

[0010] The protection mechanism includes a connecting component and a protection component disposed within the connecting component;

[0011] The separation mechanism includes a filter assembly and a flow-diverting assembly connected to the filter assembly, wherein the flow-diverting assembly is disposed below the filter assembly;

[0012] The inlet and outlet of the pump body shell are connected to the inlet pipe and outlet pipe respectively. The outlet pipe is fixedly connected to the pump body shell by reinforcing ribs. The motor is fixedly connected to one side of the pump body shell.

[0013] One side of the motor passes through the pump housing and is connected to the turbine body via a drive connection. The turbine body is rotatably connected inside the pump housing.

[0014] Preferably, the fish inlet channel is located on one side of the turbine body, and the fish inlet channel is connected to the irregular groove;

[0015] The inner wall of the mounting groove is connected to the output shaft of the motor via a transmission.

[0016] Preferably, the connecting assembly includes a sealer and a pressure device, wherein the pressure device is connected to the sealer and is fixedly connected inside the sealer;

[0017] The bottom end of the protective component is connected to the pressure device, and the outer wall of the protective component is connected to the inner wall of the sealer.

[0018] Preferably, the turbine body is a helical solid structure, and the concentric compensation groove is used to reduce eccentric force and vibration during operation. The turbine body forms a helical flow channel under low speed drive to achieve rapid transport of live fish.

[0019] Preferably, the protection component includes a connecting pipe, the inner wall of which is provided with a pressure groove, the pressure groove being designed to gradually narrow and then gradually expand, and the outer wall at the bottom of the connecting pipe is provided with a limiting groove.

[0020] The connecting tube is sleeved inside the sealer, the bottom of the connecting tube overlaps with the pressure device, and the inner wall of the sealer is engaged with the inner wall of the limiting groove.

[0021] Preferably, the sealer includes a mounting shell, a sealing outer shell is fixedly connected to the lower part of the mounting shell, the mounting shell is connected to a connecting pipe, a cavity is opened inside the mounting shell, a sealing airbag is fixedly connected to the inner wall of the mounting shell, the sealing airbag is connected to the connecting pipe through the cavity, and a control valve is provided outside one of the connecting pipes;

[0022] The inner wall of the sealing shell is fixedly connected to the pressure device, the sealing airbag is snapped into the limiting groove, and the inner wall of the mounting shell overlaps with the connecting pipe.

[0023] Preferably, the pressure device includes a pressure cylinder, specifically an elastically sealed telescopic air cylinder, the pressure cylinder being annular, and a push plate being fixedly connected to the top end of the pressure cylinder;

[0024] The outer wall of the pressure cylinder is fixedly connected to the sealing shell, the top of the push plate overlaps with the bottom of the connecting pipe, the other end of the connecting pipe is connected to the pressure cylinder, and the top of the feed pipe is fixedly connected to the sealing shell.

[0025] Preferably, the inlet diameter of the turbine body is 80-150mm and the outlet diameter is 60-120mm.

[0026] Preferably, the filter assembly includes a flow guide tube, and a plurality of leakage grooves are provided on the lower part of the inner wall of the flow guide tube, one of which is located at the bend of the flow guide tube. A plurality of elastic filter plates are fixedly connected inside the flow guide tube, and the plurality of elastic filter plates are respectively located above the plurality of leakage grooves.

[0027] One end of the guide pipe is connected to one end of the discharge pipe, the guide pipe is fixedly connected above the diversion component, and the diversion component is connected to the guide pipe;

[0028] The diversion component includes a diversion box, which has a first diversion groove and two second diversion grooves. The first diversion groove and the second diversion groove are both Tesla valve grooves.

[0029] The first diversion channel is connected to the leakage channel located at the bend of the guide pipe, and the two second diversion channels are respectively connected to the remaining two leakage channels. The diversion box is fixedly connected to the bottom of the guide pipe.

[0030] Compared with the prior art, the beneficial effects of the present invention are:

[0031] 1. This invention designs a turbine body with a helical solid structure and a single inlet and outlet flow channel layout. Combined with the flow field optimization of the irregularly shaped inlet on the front and the dynamic balance of the concentricity compensation structure on the back, a stable helical propulsion flow field is formed under low-speed operation. In actual operation, the speed of live fish passing through the pump body is significantly increased, and problems such as skin damage and internal organ displacement caused by mechanical squeezing or collision are fundamentally improved, with almost no deaths caused by pump damage. The pump body vibration amplitude is greatly reduced, the running stability is significantly enhanced, the wear rate of key components is significantly slowed down, and the overall service life of the equipment is effectively extended. At the same time, the hydraulic conveying efficiency is significantly improved, and the head increase effect per unit energy consumption is outstanding. It can better meet the needs of high-density, high-frequency live fish transportation in large-scale farms, effectively reducing equipment wear and operating costs in the aquaculture process.

[0032] 2. This invention also incorporates a protective mechanism. When live fish enter the converging zone of the connecting pipe, the pipe diameter gradually decreases, increasing the fluid velocity and reducing the static pressure to create a negative pressure zone. Subsequently, the live fish enters the expanding zone of the connecting pipe, where the pipe diameter gradually increases, slowing down the high-speed fluid and restoring the static pressure, thus reducing turbulence and pressure loss. The converging zone helps the fish-water mixture enter the pump body more smoothly, reducing sedimentation or blockage caused by insufficient flow velocity. The expanding zone effectively reduces flow and pressure pulsations within the pump, preventing fish damage or pump vibration caused by sudden changes in flow velocity. The pressurization groove design inside the connecting pipe adjusts the flow velocity and pressure distribution, allowing the pump to maintain efficient operation over a wider range of conditions. This ensures that the fluid and live fish enter the turbine body in an ideal state, and the smooth transition reduces the impact force of the fluid on the fish. This is particularly suitable for pumping live fish or fragile fish species, improving the survival rate of live fish.

[0033] 3. The present invention also designs a sealing airbag and a control valve, so that after the device is used up, the gas in the cavity and the sealing airbag can be discharged by simply opening the control valve, so that the sealing airbag is restored. At this time, the connecting tube can be taken out to complete the disassembly of the device. This reduces the difficulty of the device installation and disassembly, improves the efficiency of the device assembly, and further reduces the difficulty of the device use. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0035] Figure 2 This is a schematic diagram of the structure in use of the present invention;

[0036] Figure 3 This is a first-view structural diagram of the turbine body of the present invention;

[0037] Figure 4 This is a schematic diagram of the turbine body structure from a second perspective of the present invention;

[0038] Figure 5 This is a schematic diagram of the turbine body structure from a third-view perspective of the present invention;

[0039] Figure 6 This is a schematic cross-sectional view of the protection mechanism of the present invention;

[0040] Figure 7 For the present invention Figure 6 Enlarged structural diagram at point A in the middle;

[0041] Figure 8 This is a schematic cross-sectional view of the separation mechanism of the present invention;

[0042] Figure 9 This is a partial structural diagram of the present invention;

[0043] Figure 10 This is a schematic diagram of the assembly structure of the turbine body and pump body of the present invention.

[0044] Explanation of the labels in the diagram:

[0045] 1. Pump body mechanism; 2. Turbine body; 3. Protection mechanism; 4. Separation mechanism;

[0046] 11. Pump body casing; 12. Inlet pipe; 13. Outlet pipe; 14. Reinforcing ribs; 15. Motor; 16. Base;

[0047] 21. Concentric compensation channel; 22. Fish inlet channel; 23. Irregularly shaped channel; 24. Installation channel;

[0048] 31. Connecting components; 32. Protective components;

[0049] 41. Filtering assembly; 42. Flow splitting assembly;

[0050] 311. Sealer; 312. Pressure gauge;

[0051] 321. Connecting pipe; 322. Pressurizing groove; 323. Limiting groove;

[0052] 3111, Sealed housing; 3112, Mounting housing; 3113, Connecting pipe; 3114, Cavity; 3115, Sealing airbag; 3116, Control valve;

[0053] 3121. Pressure cylinder; 3122. Push plate;

[0054] 411. Flow guide pipe; 412. Leakage tank; 413. Flexible filter plate;

[0055] 421. Diversion box; 422. First diversion channel; 423. Second diversion channel. Detailed Implementation

[0056] like Figures 1 to 10 As shown, the present invention relates to a turbine and centrifugal driven fish suction pump, including a turbine body 2, a fish inlet groove 22 opened on one side of the turbine body 2, a shaped groove 23 disposed outside the turbine body 2, an installation groove 24 located on the other side of the turbine body 2, and a concentric compensation groove 21, wherein the shaped groove 23 is opened on the arc-shaped outer wall of the turbine body 2, the inner wall of the shaped groove 23 is arc-shaped, the two ends of the inner wall of the shaped groove 23 have different diameters, and the inner wall diameter of the shaped groove 23 gradually decreases;

[0057] A centrifugal fish-suction pump includes a pump body 1, a protection mechanism 3, and a separation mechanism 4. A turbine body 2 is installed inside the pump body 1. The protection mechanism 3 is connected to the pump body 1. The pump body 1 includes a pump housing 11, an inlet pipe 12 and an outlet pipe 13 connected to the pump housing 11, reinforcing ribs 14 for strengthening the connection between the outlet pipe 13 and the pump housing 11, and a motor 15 for driving the turbine body 2. Bases 16 are fixedly connected to the motor 15 and the pump housing 11. The protection mechanism 3 includes a connecting assembly 31 and a protection assembly 32 disposed within the connecting assembly 31. The separation mechanism 4 includes a filter assembly 41 and a diversion assembly 42 connected to the filter assembly 41, wherein the diversion assembly 42 is disposed below the filter assembly 41. The turbine body 2 is designed with a helical solid structure... The design employs a single inlet and outlet flow channel layout, combined with flow field optimization at the front irregular inlet and dynamic balance of the concentricity compensation structure at the rear. This creates a stable spiral propulsion flow field under low-speed operation. In actual operation, the speed at which live fish pass through the pump is significantly increased, fundamentally improving issues such as skin damage and visceral displacement caused by mechanical compression or collisions. Mortality due to pump damage is almost nonexistent. Pump vibration amplitude is greatly reduced, operational stability is significantly enhanced, and the wear rate of key components is significantly slowed, effectively extending the overall service life of the equipment. At the same time, hydraulic transport efficiency is significantly improved, and the head increase per unit energy consumption is outstanding. This better meets the high-density, high-frequency live fish transfer needs of large-scale farms, effectively reducing equipment wear and operating costs during the aquaculture process.

[0058] In an embodiment of the present invention, the inlet and outlet of the pump housing 11 are connected to the inlet pipe 12 and the outlet pipe 13, respectively. The outlet pipe 13 is fixedly connected to the pump housing 11 via reinforcing ribs 14. The motor 15 is fixedly connected to one side of the pump housing 11, and one side of the motor 15 passes through the pump housing 11 and is connected to the turbine body 2 via transmission. Preferably, the fish inlet channel 22 is opened on one side of the turbine body 2, and the fish inlet channel 22 is connected to the irregular groove 23. The inner wall of the mounting groove 24 is connected to the output shaft of the motor 15 via transmission. The connecting assembly 31 includes a seal 311 and a pressure device 312, wherein the pressure device 312 is connected to the seal 311 and is fixedly connected inside the seal 311. The bottom end of the protective assembly 32 is connected to the pressure device 312, and the outer wall of the protective assembly 32 is connected to the inner wall of the seal 311. By designing the protective mechanism 3, when live fish enter the connecting pipe 32, In the converging zone within 1, the fluid velocity increases and the static pressure decreases by gradually reducing the pipe diameter, forming a negative pressure zone. Subsequently, the live fish enters the expanding zone within the connecting pipe 321. The expanding zone within the connecting pipe 321 gradually increases the pipe diameter, causing the high-speed fluid to decelerate and the static pressure to recover, reducing turbulence and pressure loss. The converging zone within the connecting pipe 321 helps the fish-water mixture enter the pump body more smoothly, reducing sedimentation or blockage caused by insufficient flow velocity. The expanding zone effectively reduces flow pulsation and pressure pulsation within the pump, avoiding fish damage or pump vibration caused by sudden changes in flow velocity. The pressurizing groove 322 inside the connecting pipe 321 is designed to adjust the flow velocity and pressure distribution, enabling the pump to maintain efficient operation over a wider range of operating conditions. This ensures that the fluid and live fish enter the turbine body 2 in an ideal state, and the smooth transition reduces the impact force of the fluid on the fish. It is especially suitable for pumping live fish or fragile fish species, improving the survival rate of live fish.

[0059] The fish inlet trough 22 is irregularly shaped, unlike the generally circular shape in existing technologies. This irregular design facilitates fish entry. Due to the irregular shape of the fish inlet trough 22, a corresponding concentric compensation groove 21 is required for balance. Because the internal flow channels of the turbine body 2 are asymmetrical, eccentric forces will cause rotation. The concentric compensation groove 21 reduces the weight at the heavier position, ensuring uniform weight distribution around the center, thus stabilizing rotation. Furthermore, the center of mass of the concentric compensation groove 21 is coaxial with the rotation axis of the turbine body 2, counteracting the eccentric forces caused by the irregular inlet shape and hydrodynamic asymmetry, achieving stable operation at low speeds and reducing shearing on the fish. Since the diameters at both ends of the inner wall of the irregular groove 23 are different, the gradually decreasing inner wall diameter leads to weight asymmetry in the entire structure. The concentric compensation groove 21 balances this weight.

[0060] In an embodiment of the present invention, the turbine body 2 is a spiral solid structure. The turbine body 2 forms a spiral flow channel under low-speed drive to achieve rapid transport of live fish. The protective component 32 includes a connecting pipe 321. The inner wall of the connecting pipe 321 is provided with a pressure groove 322. The pressure groove 322 adopts a shape design of gradually narrowing and then gradually expanding. The outer wall of the bottom of the connecting pipe 321 is provided with a limiting groove 323. The connecting pipe 321 is sleeved in the sealer 311. The bottom of the connecting pipe 321 overlaps with the pressure device 312. The inner wall of the sealer 311 is engaged with the inner wall of the limiting groove 323. By designing the sealing airbag 3115 and the control valve 3116, after the device is used up, only the control valve 3116 needs to be opened to discharge the gas in the cavity 3114 and the sealing airbag 3115, so that the sealing airbag 3115 can be restored. At this time, the connecting pipe 321 can be taken out to complete the disassembly of the device. This reduces the difficulty of installing and disassembling the device, improves the efficiency of assembling the device, and further reduces the difficulty of using the device.

[0061] In another embodiment of the present invention, the sealer 311 includes a mounting shell 3112, a sealing outer shell 3111 fixedly connected to the lower part of the mounting shell 3112, the mounting shell 3112 being connected to a connecting pipe 3113, a cavity 3114 being formed inside the mounting shell 3112, a sealing airbag 3115 being fixedly connected to the inner wall of the mounting shell 3112, the sealing airbag 3115 being connected to the connecting pipe 3113 through the cavity 3114, a control valve 3116 being provided outside one of the connecting pipes 3113, the inner wall of the sealing outer shell 3111 being fixedly connected to the pressure device 312, the sealing airbag 3115 being snapped into the limiting groove 323, the inner wall of the mounting shell 3112 overlapping with the connecting pipe 321, and the pressure device 312 including Pressure cylinder 3121 is specifically an elastic sealing telescopic air cylinder. Pressure cylinder 3121 is annular. A push plate 3122 is fixedly connected to the top of pressure cylinder 3121. The outer wall of pressure cylinder 3121 is fixedly connected to sealing shell 3111. The top of push plate 3122 overlaps with the bottom of connecting pipe 321. The other end of connecting pipe 3113 is connected to pressure cylinder 3121. By setting sealing airbag 3115, it is ensured that after gas connecting pipe 321 is fully inserted into mounting shell 3112, sealing airbag 3115 can seal limiting groove 323 by its own expansion. The friction between sealing airbag 3115 and connecting pipe 321 completes the fixing effect of connecting pipe 321.

[0062] Since the pressure cylinder 3121 is an elastic, sealed, telescopic air cylinder and is annular, it will not block the live fish from entering the feed pipe 12 along the connecting pipe 321, thus ensuring the conveying effect of live fish and liquid. At the same time, after use, the pressure cylinder 3121 will recover under its own elasticity, reducing the difficulty of using the device.

[0063] Among them, the turbine body 2 can still complete the delivery when the speed is below 550 rpm, ensuring that the turbine body 2 can still achieve delivery at low speed.

[0064] As another embodiment of the present invention, the inlet diameter of the turbine body 2 is 80-150mm and the outlet diameter is 60-120mm. The concentricity compensation structure reduces mechanical vibration caused by uneven centrifugal force by adjusting the mass distribution on the back of the turbine body 2, thereby extending the service life of the equipment. While ensuring the head efficiency, this structure achieves the goal of "low damage, high stability and long life" for live fish transportation, and is especially suitable for the long-distance and high-density fish transportation needs of large-scale farms.

[0065] Driven at low speeds of 500-1500 rpm, the turbine body 2 rotates to form a stable spiral flow channel, allowing the fish-water mixture to accelerate along the spiral trajectory. This avoids the direct collision between the fish and the blades and pump casing that would occur with traditional dual-blade turbine bodies 2, which require higher speeds to compensate for head at high speeds. The continuous design of the spiral flow channel shortens the average residence time of the fish in the pump to no more than 0.2 seconds, while also reducing the risk of damage to the fish from water flow shear forces.

[0066] In another embodiment of the present invention, the filter assembly 41 includes a guide pipe 411, and a plurality of leakage grooves 412 are provided on the lower part of the inner wall of the guide pipe 411. One of the leakage grooves 412 is located at the bend of the guide pipe 411. A plurality of elastic filter plates 413 are fixedly connected inside the guide pipe 411. The plurality of elastic filter plates 413 are respectively located above the plurality of leakage grooves 412. One end of the guide pipe 411 is connected to one end of the discharge pipe 13. The guide pipe 411 is fixedly connected above the diversion assembly. The diversion assembly is connected to the guide pipe 411. When the liquid and live fish are discharged along the turbine body 2 to the discharge pipe 13 and into the guide pipe 411, since the guide pipe 411 is vertically downward and the bend is not at a 90-degree angle, the impact force when the live fish falls is reduced, thereby reducing the possibility of injury or death of the live fish.

[0067] Because of the elastic filter plate 413, on the one hand, the elastic filter plate 413 can block live fish, and with its own elasticity, it can protect the live fish to a certain extent and prevent them from being injured. On the other hand, it prevents the live fish from directly contacting the leakage tank 412 during the movement of the guide pipe 411 and causing scratches, thus further improving the safety of the device when transporting live fish.

[0068] The diversion assembly 42 includes a diversion box 421, which has a first diversion groove 422 and two second diversion grooves 423. The first diversion groove 422 and the second diversion groove 423 are both Tesla valve grooves. The first diversion groove 422 is connected to the leakage groove 412 located at the bend of the guide pipe 411. The two second diversion grooves 423 are respectively connected to the remaining two leakage grooves 412. The diversion box 421 is fixedly connected to the bottom of the guide pipe 411.

[0069] Because the first drain tank 412 is connected to the first diversion tank 422, and the first diversion tank 422 directly slows down the water flow, a large amount of liquid remains and flows along the guide pipe 411. This slows down the water flow when the live fish pass through the bend of the guide pipe 411, thus ensuring that liquid remains and preventing the live fish from directly hitting the pipe wall when falling into the guide pipe 411, further improving the survival rate of the live fish.

[0070] By designing a second diversion channel 423, the discharge of liquid is accelerated, which helps to improve the survival rate of fish and reduce the workload of subsequent processing.

[0071] Working principle: This embodiment provides a turbine and centrifugal driven fish suction pump, including the following usage steps:

[0072] 1. Installation and fixing process

[0073] The motor 15 and the pump housing 11 are fixed to ensure that the inlet of the feed pipe 12 is vertically upward. After installation, the connecting pipe 321 is inserted into the mounting housing 3112. At this time, the connecting pipe 321, by its own weight, squeezes the push plate 3122 and the pressure cylinder 3121, so that the air inside the pressure cylinder 3121 is injected into the cavity 3114. As the pressure inside the cavity 3114 increases, the sealing airbag 3115 expands and fills the limiting groove 323, thereby completing the fixing of the connecting pipe 321. Then, the motor 15 can be run to drive the turbine body 2 to rotate and start transporting live fish.

[0074] 2. Operating principle of motor 15 and working principle of turbine body 2

[0075] When motor 15 is running, turbine body 2 rotates accordingly. This turbine adopts a spiral solid structure and a single flow channel design, and is optimized for flow field by using a front-facing irregularly shaped inlet. This allows the fish-water mixture to smoothly accelerate and pass through along a spiral trajectory. This design avoids problems such as skin abrasions and internal organ displacement caused by high-speed shearing or local turbulence in traditional dual-blade turbine bodies 2. At the same time, turbine body 2 operates at a low speed of 500-1500 rpm, further reducing the risk of direct collision between the fish and the blades and pump casing, thus achieving safe transport of live fish.

[0076] In addition, the back of the turbine body 2 is equipped with a concentricity compensation structure, which dynamically balances the mass distribution of the turbine body 2 to counteract the eccentric force generated during rotation, thereby suppressing pump vibration from the source. The continuous design of the spiral flow channel allows the water flow energy to be concentrated and transferred, so that the required head can be achieved at low speed, avoiding the increased energy consumption caused by the traditional wide flow channel turbine body 2 having to be forcibly accelerated due to insufficient speed.

[0077] 3. The function of the tapered-expanding zone of connecting pipe 321

[0078] When a live fish enters the converging zone within the connecting pipe 321, the fluid velocity increases and the static pressure decreases due to the gradually decreasing pipe diameter, creating a negative pressure zone. This helps the live fish enter the connecting pipe 321 more smoothly. Subsequently, the live fish enters the expanding zone within the connecting pipe 321. The expanding zone gradually increases the pipe diameter, causing the high-speed fluid to slow down and the static pressure to recover, reducing turbulence and pressure loss. The converging zone within the connecting pipe 321 helps the fish-water mixture enter the pump body more smoothly, reducing sedimentation or blockage caused by insufficient flow velocity. Meanwhile, the expanding zone effectively reduces flow pulsation and pressure pulsation within the pump, preventing fish damage or pump vibration caused by sudden changes in flow velocity.

[0079] 4. Liquid splitting steps

[0080] When the liquid and live fish flow along the turbine body 2 to the discharge pipe 13 and into the guide pipe 411, the live fish and water flow along the guide pipe 411 because the guide pipe 411 is vertically downward and the bend is not at a 90-degree angle. The live fish will pass through the elastic filter plate 413 and be discharged along the guide pipe 411, while the liquid will pass through the elastic filter plate 413 and enter the leakage tank 412. Since the first leakage tank 412 is connected to the first diversion tank 422 and the first diversion tank 422 will directly slow down the water discharge speed, a large amount of liquid will remain and flow along the guide pipe 411. As the liquid flows along the guide pipe 411 to the second diversion tank 423, the second diversion tank 423 will accelerate the discharge of the liquid.

[0081] 5. Disassembly process

[0082] After use, simply open the control valve 3116 to release the gas from the cavity 3114 and the sealing airbag 3115, allowing the sealing airbag 3115 to return to its original state. At this point, the connecting pipe 321 can be removed, completing the disassembly of the device.

[0083] The embodiments disclosed in this invention are preferred embodiments, but are not limited thereto. Those skilled in the art can easily understand the spirit of this invention based on the above embodiments and make different extensions and variations, but as long as they do not depart from the spirit of this invention, they are all within the protection scope of this invention.

Claims

1. A turbine, characterized in that, It includes a turbine body (2), a fish inlet groove (22) opened on one side of the turbine body (2), a shaped groove (23) set outside the turbine body (2), an installation groove (24) located on the other side of the turbine body (2), and a concentric compensation groove (21). The shaped groove (23) is opened on the arc-shaped outer wall of the turbine body (2), the inner wall of the shaped groove (23) is arc-shaped, the two ends of the inner wall of the shaped groove (23) have different diameters, and the inner wall diameter of the shaped groove (23) gradually decreases.

2. A centrifugal-driven fish suction pump, comprising the turbine as described in claim 1, characterized in that, It includes a pump body mechanism (1), a protection mechanism (3) and a separation mechanism (4), wherein the turbine body (2) is installed inside the pump body mechanism (1) and the protection mechanism (3) is connected to the pump body mechanism (1); The pump body mechanism (1) includes a pump body shell (11), an inlet pipe (12) and an outlet pipe (13) connected to the pump body shell (11), a reinforcing rib (14) for reinforcing the outlet pipe (13) and the pump body shell (11), and a motor (15) for driving the turbine body (2) to run. The motor (15) and the pump body shell (11) are both fixedly connected to a base (16). The protection mechanism (3) includes a connecting component (31) and a protection component (32) disposed within the connecting component (31); The separation mechanism (4) includes a filter assembly (41) and a diversion assembly (42) connected to the filter assembly (41), wherein the diversion assembly (42) is disposed below the filter assembly (41); The inlet and outlet of the pump body housing (11) are connected to the inlet pipe (12) and outlet pipe (13) respectively. The outlet pipe (13) is fixedly connected to the pump body housing (11) through the reinforcing rib (14). The motor (15) is fixedly connected to one side of the pump body housing (11). One side of the motor (15) passes through the pump body housing (11) and is connected to the turbine body (2) for transmission. The turbine body (2) is rotatably connected inside the pump body housing (11).

3. The centrifugal-driven fish suction pump according to claim 2, characterized in that, The fish inlet channel (22) is located on one side of the turbine body (2), and the fish inlet channel (22) is connected to the irregular groove (23); The inner wall of the mounting groove (24) is connected to the output shaft of the motor (15) via a transmission.

4. The centrifugal-driven fish suction pump according to claim 3, characterized in that, The connecting assembly (31) includes a seal (311) and a pressure device (312), wherein the pressure device (312) is connected to the seal (311) and the pressure device (312) is fixedly connected inside the seal (311); The bottom end of the protective component (32) is connected to the pressure device (312), and the outer wall of the protective component (32) is connected to the inner wall of the sealer (311).

5. The centrifugal-driven fish suction pump according to claim 4, characterized in that, The turbine body (2) is a spiral solid structure. The concentric compensation groove (21) is used to reduce eccentric force and vibration during operation. The turbine body (2) forms a spiral flow channel under low speed drive to achieve rapid transport of live fish.

6. The centrifugal-driven fish suction pump according to claim 5, characterized in that, The protective component (32) includes a connecting pipe (321), and a pressure groove (322) is provided on the inner wall of the connecting pipe (321). The pressure groove (322) adopts a shape design of gradually narrowing and then gradually expanding. A limit groove (323) is provided on the outer wall at the bottom of the connecting pipe (321). The connecting pipe (321) is sleeved inside the sealer (311), the bottom of the connecting pipe (321) overlaps with the pressure device (312), and the inner wall of the sealer (311) is engaged with the inner wall of the limiting groove (323).

7. The centrifugal-driven fish suction pump according to claim 6, characterized in that, The sealer (311) includes a mounting shell (3112), a sealing outer shell (3111) is fixedly connected to the lower part of the mounting shell (3112), the mounting shell (3112) is connected to the connecting pipe (3113), a cavity (3114) is opened inside the mounting shell (3112), a sealing airbag (3115) is fixedly connected to the inner wall of the mounting shell (3112), the sealing airbag (3115) is connected to the connecting pipe (3113) through the cavity (3114), and a control valve (3116) is provided outside one of the connecting pipes (3113). The inner wall of the sealing shell (3111) is fixedly connected to the pressure device (312), the sealing airbag (3115) is snapped into the limiting groove (323), and the inner wall of the mounting shell (3112) overlaps with the connecting pipe (321).

8. The centrifugal-driven fish suction pump according to claim 7, characterized in that, The pressure device (312) includes a pressure cylinder (3121), which is specifically an elastic sealing telescopic air cylinder. The pressure cylinder (3121) is annular, and a push plate (3122) is fixedly connected to the top of the pressure cylinder (3121). The outer wall of the pressure cylinder (3121) is fixedly connected to the sealing shell (3111), the top of the push plate (3122) overlaps with the bottom of the connecting pipe (321), the other end of the connecting pipe (3113) is connected to the pressure cylinder (3121), and the top of the feed pipe (12) is fixedly connected to the sealing shell (3111).

9. The centrifugal-driven fish suction pump according to claim 8, characterized in that, The turbine body (2) has an inlet diameter of 80-150mm and an outlet diameter of 60-120mm.

10. The centrifugal-driven fish suction pump according to claim 9, characterized in that, The filter assembly (41) includes a guide tube (411), and a plurality of leakage grooves (412) are provided on the lower part of the inner wall of the guide tube (411). One of the leakage grooves (412) is located at the bend of the guide tube (411). A plurality of elastic filter plates (413) are fixedly connected inside the guide tube (411), and the plurality of elastic filter plates (413) are respectively located above the plurality of leakage grooves (412). One end of the guide pipe (411) is connected to one end of the discharge pipe (13). The guide pipe (411) is fixedly connected above the diversion assembly. The diversion assembly is connected to the guide pipe (411). The diversion assembly (42) includes a diversion box (421), which has a first diversion groove (422) and two second diversion grooves (423) inside. The first diversion groove (422) and the second diversion groove (423) are both Tesla valve grooves. The first diversion channel (422) is connected to the leakage channel (412) located at the bend of the guide pipe (411), and the two second diversion channels (423) are respectively connected to the remaining two leakage channels (412). The diversion box (421) is fixedly connected below the guide pipe (411).

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