Turbine and centrifugal driven fish pump

Abstract

The application discloses a turbine and a centrifugal fish suction pump, and relates to the technical field of fish suction pumps, and aims to solve the technical problems of the vicious cycle of efficiency and damage caused by the design defects of a traditional fish suction pump turbine, including the following aspects: the strong shearing force of the blade causes damage to fish bodies, resulting in low survival rate of the fish bodies; the symmetrical double-blade structure causes intensified eccentric vibration and aggravates abrasion; the wide flow channel needs high rotating speed to compensate the lift, but prolongs the residence time of the fish bodies; and the like, the turbine body is designed in a spiral solid structure, a single inlet and outlet flow channel layout are adopted, the flow field optimization of the front special-shaped suction inlet and the dynamic balance of the back concentricity compensation structure are combined, the live fish transportation efficiency is improved, the problems of skin damage, internal organ displacement and the like of the fish bodies caused by mechanical extrusion or collision are avoided, meanwhile, the hydraulic conveying efficiency is obviously improved, and the equipment loss and operation cost in the breeding process are effectively reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fish suction pump, more particularly, to a turbine and centrifugal driven fish suction pump. BACKGROUND

[0002] The fish suction pump is a device that uses water or air as a medium to suck 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. The centrifugal fish suction pump uses the high-speed rotation of a turbine to generate negative pressure, which sucks the fish-water mixture into the pump. The turbine converts mechanical energy into kinetic energy of water, which moves the fish body, thereby achieving the device for sucking and transporting fish.

[0003] In the design of traditional fish suction pumps, the turbine structure has multiple technical defects. The shear force exerted by the blades on the fish body is too high, which can cause damage to the fish body's skin and even internal organs, directly leading to a decrease in survival rate. At the same time, the turbine with a symmetrical double-blade structure generates significant eccentric force when rotating at high speed, causing increased vibration and mechanical wear of the pump body, which not only shortens the service life of the equipment but also increases maintenance costs. In addition, although the wide flow channel design helps to reduce the risk of fish blockage, it is limited by turbine efficiency and needs to compensate for insufficient head by increasing the rotational speed, which in turn prolongs the residence time of the fish in the pump, exacerbates the hypoxic stress response, and forms a vicious cycle of efficiency and damage.

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

[0005] The present application aims to provide a turbine and centrifugal driven fish suction pump to solve the technical problems of traditional fish suction pump turbine design defects, including: the fish body is damaged by the excessive shear force of the blades, leading to a low survival rate of the fish body; the symmetrical double-blade structure causes eccentric vibration and aggravates wear; the wide flow channel needs high rotational speed to compensate for the insufficient head, which prolongs the residence time of the fish in the pump, forming a vicious cycle of efficiency and damage.

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

[0007] The application adopts a spiral solid structure design for the turbine body, adopts a single inlet and outlet flow channel layout, combines the flow field optimization of the front-shaped suction inlet and the dynamic balance of the back concentricity compensation structure, forms a stable spiral propulsion flow field under low speed operation conditions, and significantly improves the speed of live fish passing through the pump body in actual operation, fundamentally improves the problems of skin damage and internal organ displacement caused by mechanical extrusion or collision of fish body, and almost does not appear the death caused by pump body damage; the vibration amplitude of the pump body is greatly reduced, the running stability is significantly enhanced, the wear speed of the key components is obviously slowed down, and the service life of the whole equipment is effectively prolonged; at the same time, the hydraulic conveying efficiency is significantly improved, the lift under unit energy consumption is improved, the high-density and high-frequency live fish transfer demand of large-scale breeding farm can be better met, and the equipment loss and operation cost in the breeding process are effectively reduced.

[0008] A centrifugal type driven fish suction pump, comprising a pump body mechanism, a protection mechanism and a separation mechanism, the turbine body is installed in the pump body mechanism, the protection mechanism is connected with the pump body mechanism;

[0009] The pump body mechanism comprises a pump body shell, a feed pipe and a discharge pipe connected with the pump body shell, a reinforcing rib for reinforcing the discharge pipe and the pump body shell, and a motor for driving the turbine body to operate, the motor and the pump body shell are both fixedly connected with a base;

[0010] The protection mechanism comprises a connecting assembly and a protection assembly arranged in the connecting assembly;

[0011] The separation mechanism comprises a filter assembly and a shunt assembly connected with the filter assembly, wherein the shunt assembly is arranged below the filter assembly;

[0012] The feed inlet and the discharge outlet of the pump body shell are respectively communicated with the feed pipe and the discharge pipe, the discharge pipe is fixedly connected with the pump body shell through the reinforcing rib, and the motor is fixedly connected on one side of the pump body shell;

[0013] One side of the motor is transmissionally connected with the turbine body through the pump body shell, and the turbine body is rotationally connected in the pump body shell.

[0014] Preferably, the fish inlet groove is arranged on one side of the turbine body, and the fish inlet groove is communicated with the special-shaped groove;

[0015] The inner wall of the mounting groove is transmissionally connected with the output shaft of the motor.

[0016] Preferably, the connecting assembly comprises a sealer and a pressure device, wherein the pressure device is communicated with the sealer, and the pressure device is fixedly connected in the sealer;

[0017] The bottom end of the protection assembly is connected with the pressure device, and the outer wall of the protection assembly is connected with the inner wall of the sealer.

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

[0019] Preferably, the protection assembly comprises a connecting pipe, a pressurizing groove is formed in the inner wall of the connecting pipe, the pressurizing groove is designed in a shape of gradually tapering and then gradually expanding, and a limiting groove is formed in the outer wall of the bottom of the connecting pipe.

[0020] The connecting pipe is sleeved in a sealing device, the bottom of the connecting pipe is overlapped with a pressure device, and the inner wall of the sealing device is clamped with the inner wall of the limiting groove.

[0021] Preferably, the sealing device comprises a mounting shell, a sealing shell is fixedly connected to the lower portion of the mounting shell, the mounting shell is communicated with the communicating pipe, a cavity is formed in the mounting shell, a sealing air bag is fixedly connected to the inner wall of the mounting shell, and the sealing air bag is communicated with the communicating pipe through the cavity, and one of the communicating pipes is externally provided with a control valve.

[0022] The inner wall of the sealing shell is fixedly connected with the pressure device, the sealing air bag is clamped in the limiting groove, and the inner wall of the mounting shell is overlapped with the connecting pipe.

[0023] Preferably, the pressure device comprises a pressure cylinder, the pressure cylinder is specifically an elastic sealing telescopic air cylinder, the pressure cylinder is annular, and a push plate is fixedly connected to the top end of the pressure cylinder.

[0024] The outer wall of the pressure cylinder is fixedly connected with the sealing shell, the top of the push plate is overlapped with the bottom end of the connecting pipe, the other end of the communicating pipe is communicated with the pressure cylinder, and the top end of the feeding pipe is fixedly connected with the sealing shell.

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

[0026] Preferably, the filtering assembly comprises a flow guide pipe, a plurality of liquid leakage grooves are formed in the lower portion of the inner wall of the flow guide pipe, one of the liquid leakage grooves is located at the bending portion of the flow guide pipe, a plurality of elastic filter plates are fixedly connected in the flow guide pipe, and the plurality of elastic filter plates are respectively located above the plurality of liquid leakage grooves.

[0027] One end of the flow guide pipe is communicated with one end of the discharging pipe, the flow guide pipe is fixedly connected above the shunt assembly, and the shunt assembly is communicated with the flow guide pipe.

[0028] The shunt assembly comprises a shunt box, a first shunt groove and two second shunt grooves are formed in the shunt box, and the first shunt groove and the second shunt grooves are both Tesla valve grooves.

[0029] The first diversion groove is communicated with a liquid leakage groove arranged at a bending part of the flow guide pipe, and the two second diversion grooves are respectively communicated with the remaining two liquid leakage grooves, and the diversion box is fixedly connected below the flow guide pipe.

[0030] Compared with the prior art, the present application has the following beneficial effects:

[0031] 1. The present application designs a turbine body, which is designed by a spiral solid structure, adopts a single inlet and outlet flow channel layout, combines flow field optimization of a front-shaped suction inlet and dynamic balance of a back concentricity compensation structure, and forms a stable spiral propulsion flow field under low speed operation conditions. In actual operation, the speed of live fish passing through the pump body is significantly improved, the problems of skin damage and internal displacement caused by mechanical extrusion or collision of fish body are fundamentally improved, and the death caused by pump body damage almost does not occur. The vibration amplitude of the pump body is greatly reduced, the running stability is significantly enhanced, the wear speed of the key components is obviously slowed down, and the service life of the whole equipment is effectively prolonged. At the same time, the hydraulic conveying efficiency is significantly improved, the lift under unit energy consumption is improved, the high-density and high-frequency live fish transfer demand of large-scale farms can be better met, and the equipment loss and operation cost in the breeding process are effectively reduced.

[0032] 2. The present application also designs a protection mechanism. When the live fish enters the tapered area in the connecting pipe, the pipe diameter is gradually reduced, the fluid flow rate is increased, the static pressure is reduced, a negative pressure area is formed, then the live fish enters the gradually expanding area in the connecting pipe, the pipe diameter in the gradually expanding area in the connecting pipe is gradually increased, the high-speed fluid is slowed down, the static pressure is restored, the turbulent flow and pressure loss are reduced, the tapered area in the connecting pipe can help the fish-water mixture to enter the pump body more smoothly, and the deposition or blockage caused by insufficient flow rate is reduced. The gradually expanding area can effectively reduce the flow and pressure pulsations in the pump, avoid the fish damage or pump vibration caused by flow rate mutation, the internal pressurizing groove of the connecting pipe adjusts the flow rate and pressure distribution, so that the pump can maintain high efficiency in a wider working condition range, ensures that the fluid and live fish enter the turbine body in an ideal state, and reduces the impact force of the fluid on the fish body through gentle transition. The present application is especially suitable for sucking live fish or fragile fish species, and improves the survival rate of live fish.

[0033] 3. The present application also designs a sealing air bag and a control valve. After the device is used, the control valve is opened to discharge the gas in the cavity and the sealing air bag, so that the sealing air bag is restored. At this time, the connecting pipe can be taken out, the device is disassembled, the difficulty of installation and disassembly of the device is reduced, the efficiency of assembling the device is improved, and the use difficulty of the device is further reduced. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 It is a schematic diagram of the overall structure of the present application.

[0035] Figure 2 The use state structure diagram of the application;

[0036] Figure 3 The first perspective structure diagram of the turbine body of the application;

[0037] Figure 4 The second perspective structure diagram of the turbine body of the application;

[0038] Figure 5 The third perspective structure diagram of the turbine body of the application;

[0039] Figure 6 The cross-sectional structure diagram of the protection mechanism of the application;

[0040] Figure 7 The use state structure diagram of the application; Figure 6 The enlarged structure diagram of A in the figure;

[0041] Figure 8 The cross-sectional structure diagram of the separation mechanism of the application;

[0042] Figure 9 The local structure diagram of the application;

[0043] Figure 10 The turbine body and pump body mechanism assembly structure diagram of the application.

[0044] Explanation of figure marks:

[0045] 1, pump body mechanism; 2, turbine body; 3, protection mechanism; 4, separation mechanism;

[0046] 11, pump body shell; 12, feed pipe; 13, discharge pipe; 14, reinforcing rib; 15, motor; 16, base;

[0047] 21, concentric compensation groove; 22, fish inlet groove; 23, special-shaped groove; 24, mounting groove;

[0048] 31, connecting assembly; 32, protection assembly;

[0049] 41, filtering assembly; 42, shunt assembly;

[0050] 311, sealing device; 312, pressure device;

[0051] 321, connecting pipe; 322, pressurizing groove; 323, limiting groove;

[0052] 3111, sealing shell; 3112, mounting shell; 3113, communication pipe; 3114, cavity; 3115, sealing air bag; 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 the embodiment of the present application, the feed inlet and the discharge outlet of the pump body shell 11 are respectively communicated with the feed pipe 12 and the discharge pipe 13, the discharge pipe 13 is fixedly connected with the pump body shell 11 through the reinforcing rib 14, the motor 15 is fixedly connected on one side of the pump body shell 11, one side of the motor 15 is transmissionally connected with the turbine body 2 through the pump body shell 11, preferably, the fish inlet groove 22 is arranged on one side of the turbine body 2, the fish inlet groove 22 is communicated with the special-shaped groove 23, the inner wall of the installation groove 24 is transmissionally connected with the output shaft of the motor 15, the connecting assembly 31 comprises a sealing device 311 and a pressure device 312, wherein the pressure device 312 is communicated with the sealing device 311, the pressure device 312 is fixedly connected in the sealing device 311, the bottom end of the protection assembly 32 is connected with the pressure device 312, the outer wall of the protection assembly 32 is connected with the inner wall of the sealing device 311, through the design of the protection mechanism 3, when the live fish enters the tapered area in the connecting pipe 321, the fluid flow rate is increased and the static pressure is reduced by gradually reducing the pipe diameter, a negative pressure area is formed, then the live fish enters the diverging area in the connecting pipe 321, the high-speed fluid is decelerated and the static pressure is restored by gradually increasing the pipe diameter in the diverging area in the connecting pipe 321, the turbulent flow and the pressure loss are reduced, the tapered area in the connecting pipe 321 can help the fish-water mixture to enter the pump body more smoothly, and the deposition or blockage caused by insufficient flow rate is reduced, and the diverging area can effectively reduce the flow pulsation and pressure pulsation in the pump, and the fish body damage or pump vibration caused by flow rate mutation is avoided, the internal pressurizing groove 322 of the connecting pipe 321 is designed to adjust the flow rate and pressure distribution, so that the pump can maintain high efficiency in a wider operating condition range, and ensure that the fluid and the live fish enter the turbine body 2 in an ideal state, and the impact force of the fluid on the fish body is reduced through smooth transition, which is especially suitable for sucking live fish or fragile fish species, and improves the survival rate of live fish.

[0059] Wherein the fish inlet groove 22 is designed as a special shape, which is generally circular in the prior art, and the special design in the present application is more beneficial to the fish entering, and due to the special design of the fish inlet groove 22, a corresponding concentric compensation groove 21 needs to be arranged to achieve balance, due to the asymmetry of the internal flow passage of the turbine body 2, there will be an eccentric force during rotation, the concentric compensation groove 21 is arranged to reduce the weight at the heavy position to ensure that the weight is uniform around the center, so that the rotation is stable. In addition, the centroid of the concentric compensation groove 21 is coaxial with the rotation axis of the turbine body 2, which is used to offset the eccentric force caused by the asymmetry of the inlet special shape and water power, so as to realize stable operation at low speed and reduce the shear on the fish body; due to the different diameters of the two ends of the inner wall of the special-shaped groove 23, the gradually reduced diameter of the inner wall of the special-shaped groove 23 will cause the asymmetry of the weight of the whole structure, and the concentric compensation groove 21 can balance the weight.

[0060] In the embodiment of the present application, the turbine body 2 is a spiral entity structure, the turbine body 2 forms a spiral flow channel under low-speed driving to realize rapid conveying of live fish, the protection assembly 32 comprises a connecting pipe 321, a pressurizing groove 322 is formed in the inner wall of the connecting pipe 321, the pressurizing groove 322 is designed in a shape of gradually tapering and then gradually expanding, a limiting groove 323 is formed in the outer wall of the bottom of the connecting pipe 321, the connecting pipe 321 is sleeved in the sealing device 311, the bottom of the connecting pipe 321 is overlapped with the pressure device 312, the inner wall of the sealing device 311 is clamped with the inner wall of the limiting groove 323, the sealing air bag 3115 and the control valve 3116 are designed, so that after the device is used, the gas in the cavity 3114 and the sealing air bag 3115 can be discharged by only opening the control valve 3116, the sealing air bag 3115 is restored, at this time, the connecting pipe 321 can be taken out, the disassembly of the device is completed, the difficulty of installation and disassembly of the device is reduced, the efficiency of assembling the device is improved, and the use difficulty of the device is further reduced.

[0061] As another embodiment of the present application, the sealing device 311 comprises a mounting shell 3112, the lower part of the mounting shell 3112 is fixedly connected with a sealing shell 3111, the mounting shell 3112 is communicated with a communication pipe 3113, the mounting shell 3112 is provided with a cavity 3114, the inner wall of the mounting shell 3112 is fixedly connected with a sealing air bag 3115, the sealing air bag 3115 is communicated with the communication pipe 3113 through the cavity 3114, one of the communication pipes 3113 is provided with a control valve 3116, the inner wall of the sealing shell 3111 is fixedly connected with a pressure device 312, the sealing air bag 3115 is clamped in the limiting groove 323, the inner wall of the mounting shell 3112 is overlapped with the connecting pipe 321, the pressure device 312 comprises a pressure cylinder 3121, the pressure cylinder 3121 is a flexible sealing telescopic air cylinder, the pressure cylinder 3121 is annular, the top end of the pressure cylinder 3121 is fixedly connected with a push plate 3122, the outer wall of the pressure cylinder 3121 is fixedly connected with the sealing shell 3111, the upper part of the push plate 3122 is overlapped with the bottom end of the connecting pipe 321, the other end of the communication pipe 3113 is communicated with the pressure cylinder 3121, the sealing air bag 3115 is arranged, so that after the gas connecting pipe 321 is completely inserted into the mounting shell 3112, the sealing air bag 3115 can seal the limiting groove 323 by expanding itself, and the fixing effect of the connecting pipe 321 is completed through the friction between the sealing air bag 3115 and the connecting pipe 321;

[0062] Since the pressure cylinder 3121 is a flexible sealing telescopic air cylinder and the pressure cylinder 3121 is annular, the pressure cylinder 3121 will not block the live fish from entering the feeding pipe 12 along the connecting pipe 321, the conveying effect of the live fish and the liquid is guaranteed, and after use, the pressure cylinder 3121 will restore under its own elastic force, the use difficulty of the device is reduced;

[0063] The turbine body 2 can still complete the conveying when the rotating speed is below 550 rpm, and ensures that the turbine body 2 can still realize conveying at a low rotating speed.

[0064] As another embodiment of the application, the inlet diameter of the turbine body 2 is 80-150 mm, the outlet diameter is 60-120 mm, and the concentricity compensation structure adjusts the mass distribution on the back of the turbine body 2, reduces mechanical vibration caused by uneven centrifugal force, and prolongs the service life of the equipment. The structure realizes the goals of “low damage, high stability, and long service life” of live fish conveying while ensuring the efficiency of the lift, and is especially suitable for long-distance and high-density fish transfer requirements in large-scale breeding farms.

[0065] Under the driving of a low rotating speed of 500-1500 rpm, the turbine body 2 rotates to form a stable spiral flow channel, so that the fish-water mixture accelerates along the spiral track, avoiding the direct collision of the fish body with the blades and the pump shell caused by the higher rotating speed compensation lift of the traditional double-blade turbine body 2 due to high-speed rotation. The continuity design of the spiral flow channel shortens the residence time of the fish in the pump to an average of not more than 0.2 seconds, and reduces the damage risk of the fish body caused by the shear force of the water flow.

[0066] As another embodiment of the application, the filter assembly 41 includes a flow guide pipe 411, a plurality of liquid leakage grooves 412 are formed below the inner wall of the flow guide pipe 411, one of the liquid leakage grooves 412 is located at the bending part of the flow guide pipe 411, a plurality of elastic filter plates 413 are fixedly connected in the flow guide pipe 411, the plurality of elastic filter plates 413 are located above the plurality of liquid leakage grooves 412 respectively, one end of the flow guide pipe 411 is in communication with one end of the discharge pipe 13, the flow guide pipe 411 is fixedly connected above the flow distribution assembly, the flow distribution assembly is in communication with the flow guide pipe 411, when the liquid and the live fish are discharged to the discharge pipe 13 along the turbine body 2 and enter the flow guide pipe 411, since the flow guide pipe 411 is vertically downward and the bending part is not ninety degrees, the impact force of the live fish when falling is slowed down, thereby reducing the possibility of injury or death of the live fish.

[0067] Due to the arrangement of the elastic filter plates 413, on the one hand, the elastic filter plates 413 can block the live fish, and cooperate with the elasticity to have a certain protection effect on the live fish, avoiding injury to the live fish, and on the other hand, avoiding the situation that the live fish directly contacts the liquid leakage grooves 412 during the movement in the flow guide pipe 411, further improving the safety of the device when conveying the live fish.

[0068] The shunt assembly 42 comprises a shunt box 421, a first shunt groove 422 and two second shunt grooves 423 are arranged in the shunt box 421, the first shunt groove 422 and the second shunt groove 423 are both Tesla valve grooves, the first shunt groove 422 is in communication with the liquid leakage groove 412 arranged at the bending part of the flow guide pipe 411, and the two second shunt grooves 423 are in communication with the remaining two liquid leakage grooves 412 respectively, and the shunt box 421 is fixedly connected below the flow guide pipe 411.

[0069] Because the first liquid leakage groove 412 is in communication with the first shunt groove 422, and the first shunt groove 422 directly delays the speed of water flow, a large amount of liquid is left and flows along the flow guide pipe 411, so that the water flow is slowed down when the live fish passes through the bending part of the flow guide pipe 411, thereby ensuring the liquid residue, avoiding the live fish directly impacting the pipe wall when falling in the flow guide pipe 411, and further improving the survival rate of the live fish.

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

[0071] Working principle: the embodiment provides a turbine and a centrifugal driven fish suction pump, which comprises the following use steps:

[0072] 1. Installation and fixing process

[0073] The motor 15 and the pump body shell 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 installation shell 3112, at this time, the connecting pipe 321 is fixed by relying on the weight of the connecting pipe 321 itself, extruding the push plate 3122 and the pressure cylinder 3121, so that the air in the pressure cylinder 3121 is injected into the cavity 3114, as the pressure in the cavity 3114 rises, the sealing air bag 3115 expands and fills into the limiting groove 323, thereby completing the fixing of the connecting pipe 321, and then the motor 15 can be operated to drive the turbine body 2 to rotate, and the live fish can be transported.

[0074] 2. Motor 15 operation and turbine body 2 working principle

[0075] When the motor 15 operates, the turbine body 2 rotates, the turbine adopts a spiral solid structure and a single flow channel design, and cooperates with a positive face-shaped suction inlet to optimize the flow field, so that the fish-water mixture can smoothly accelerate along the spiral track, which avoids the problems of skin scratches and internal displacement of fish body caused by high-speed shearing or local turbulence of the traditional double-blade turbine body 2, and at the same time, the turbine body 2 operates at a low speed of 500-1500 revolutions / minute, which further reduces the risk of direct collision between the fish body and the blade and the pump shell, and realizes the safe transportation of the live fish.

[0076] In addition, the turbine body 2 back surface is provided with concentricity compensation structure, through dynamic balance turbine body 2 mass distribution, offset the eccentric force generated in the rotation process, from the source to inhibit the pump body vibration, and the continuity design of spiral flow channel, water flow energy can be concentrated transmission, at low speed can reach the required head, avoid the traditional wide flow channel turbine body 2 due to insufficient speed need to force speed up and lead to energy consumption increase.

[0077] 3. The effect of the tapered-gradual expansion area of the connecting pipe 321

[0078] When the live fish enters the tapered area of the connecting pipe 321, the fluid flow rate increases and the static pressure decreases due to the gradual reduction of the pipe diameter, forming a negative pressure area, which helps the live fish enter the connecting pipe 321 more smoothly. Subsequently, the live fish enters the gradual expansion area, and the gradual expansion area of the connecting pipe 321 gradually increases the pipe diameter, which slows down the high-speed fluid, restores the static pressure, and reduces turbulence and pressure loss. The tapered area of the connecting pipe 321 can help the fish-water mixture enter the pump body more smoothly, reducing sedimentation or blockage caused by insufficient flow rate. The gradual expansion area can effectively reduce the flow and pressure pulsations in the pump, avoiding damage to the fish body or pump body vibration caused by sudden changes in flow rate.

[0079] 4. Liquid diversion step

[0080] When the liquid and live fish are discharged along the turbine body 2 to the discharge pipe 13 and into the guide pipe 411, the live fish and water flow will flow along the guide pipe 411, and 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 liquid leakage groove 412. Since the first liquid leakage groove 412 is connected to the first diversion groove 422, and the first diversion groove 422 directly slows down the water flow discharge speed, a large amount of liquid remains and flows along the guide pipe 411. As the liquid flows along the guide pipe 411 to the second diversion groove 423, the second diversion groove 423 accelerates the liquid discharge.

[0081] 5. Disassembly process

[0082] After use, only the control valve 3116 is opened, the gas in the cavity 3114 and the sealing air bag 3115 is discharged, and the sealing air bag 3115 is restored. At this time, the connecting pipe 321 can be removed, and the disassembly of the device is completed.

[0083] The embodiments disclosed in the present application are the preferred embodiments, but are not limited thereto. Those skilled in the art can easily understand the spirit of the present application based on the above embodiments and make different inferences and changes, as long as they do not deviate from the spirit of the present application, which are within the scope of protection of the present application.

Claims

1. A centrifugal fish-impelling pump of the type comprising a turbine, characterized in that, The turbine comprises a turbine body (2), an inlet fish groove (22) opened on one side of the turbine body (2), a special-shaped groove (23) arranged outside the turbine body (2), a mounting groove (24) located on the other side of the turbine body (2), and a concentric compensation groove (21), wherein the special-shaped groove (23) is opened on the arc-shaped outer wall of the turbine body (2), the inner wall of the special-shaped groove (23) is arc-shaped, the diameters of the two ends of the inner wall of the special-shaped groove (23) are different, and the diameter of the inner wall of the special-shaped groove (23) gradually decreases; The turbine body (2) is a spiral solid structure, the concentric compensation groove (21) is used for reducing eccentric force and vibration during operation, and the turbine body (2) forms a spiral flow channel under low-speed driving to realize rapid conveying of live fish. Further comprising a pump body mechanism (1), a protection mechanism (3) and a separation mechanism (4), the turbine body (2) is installed in the pump body mechanism (1), and the protection mechanism (3) is connected with the pump body mechanism (1); The pump body mechanism (1) comprises a pump body shell (11), an inlet pipe (12) and an outlet pipe (13) connected with 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 operate, and the motor (15) and the pump body shell (11) are both fixedly connected with a base (16) below. The protection mechanism (3) comprises a connecting assembly (31) and a protection assembly (32) arranged in the connecting assembly (31); the protection assembly (32) comprises a connecting pipe (321), a pressurizing groove (322) is opened in the inner wall of the connecting pipe (321), the pressurizing groove (322) is designed in a shape gradually tapering and then gradually expanding, and a limiting groove (323) is opened in the outer wall of the bottom of the connecting pipe (321); The connecting pipe (321) is sleeved in a sealing device (311), the bottom of the connecting pipe (321) is overlapped with a pressure device (312), and the inner wall of the sealing device (311) is clamped with the inner wall of the limiting groove (323); The separation mechanism (4) comprises a filtering assembly (41) and a shunt assembly (42) connected with the filtering assembly (41), wherein the shunt assembly (42) is arranged below the filtering assembly (41). The inlet and outlet of the pump body shell (11) are respectively communicated with the inlet pipe (12) and the outlet pipe (13), the outlet pipe (13) is fixedly connected with the pump body shell (11) through the reinforcing rib (14), and the motor (15) is fixedly connected on one side of the pump body shell (11); One side of the motor (15) is transmissionally connected with the turbine body (2) through the pump body shell (11), and the turbine body (2) is rotationally connected in the pump body shell (11).

2. The centrifugal fish-pumping impeller according to claim 1, wherein The inlet fish groove (22) is opened on one side of the turbine body (2), and the inlet fish groove (22) is communicated with the special-shaped groove (23); The inner wall of the mounting groove (24) is transmissionally connected with the output shaft of the motor (15).

3. The centrifugal fish-pumping action driven pump according to claim 2, wherein The connecting assembly (31) comprises a sealing device (311) and a pressure device (312), wherein the pressure device (312) is connected with the sealing device (311), and the pressure device (312) is fixedly connected in the sealing device (311); The bottom end of the protection assembly (32) is connected with the pressure device (312), and the outer wall of the protection assembly (32) is connected with the inner wall of the sealing device (311).

4. The centrifugal fish-pumping action pump of claim 3, wherein, The sealing device (311) comprises a mounting shell (3112), a sealing shell (3111) is fixedly connected below the mounting shell (3112), the mounting shell (3112) is connected with a communication pipe (3113), a cavity (3114) is formed in the mounting shell (3112), a sealing air bag (3115) is fixedly connected to the inner wall of the mounting shell (3112), and the sealing air bag (3115) is connected with the communication pipe (3113) through the cavity (3114); one of the communication pipes (3113) is provided with a control valve (3116); The inner wall of the sealing shell (3111) is fixedly connected with the pressure device (312), the sealing air bag (3115) is clamped in the limiting groove (323), and the inner wall of the mounting shell (3112) is overlapped with the connecting pipe (321).

5. The centrifugal fish-pumping action pump of claim 4, wherein, The pressure device (312) comprises a pressure cylinder (3121), the pressure cylinder (3121) is a flexible sealing telescopic air cylinder, the pressure cylinder (3121) is annular, and the top end of the pressure cylinder (3121) is fixedly connected with a push plate (3122); The outer wall of the pressure cylinder (3121) is fixedly connected with the sealing shell (3111), the top of the push plate (3122) is overlapped with the bottom end of the connecting pipe (321), the other end of the communication pipe (3113) is connected with the pressure cylinder (3121), and the top end of the feeding pipe (12) is fixedly connected with the sealing shell (3111).

6. The centrifugal fish-pumping action pump of claim 5, wherein, The inlet diameter of the turbine body (2) is 80-150mm, and the outlet diameter is 60-120mm.

7. The centrifugal fish-pumping action pump of claim 6, wherein, The filtering assembly (41) comprises a flow guide pipe (411), a plurality of liquid leakage grooves (412) are formed in the lower portion of the inner wall of the flow guide pipe (411), one of the liquid leakage grooves (412) is located at the bending portion of the flow guide pipe (411), a plurality of elastic filter plates (413) are fixedly connected in the flow guide pipe (411), and the plurality of elastic filter plates (413) are located above the plurality of liquid leakage grooves (412) respectively; One end of the flow guide pipe (411) is connected with one end of the discharging pipe (13), the flow guide pipe (411) is fixedly connected above the shunt assembly, and the shunt assembly is connected with the flow guide pipe (411); The shunt assembly (42) comprises a shunt box (421), a first shunt groove (422) and two second shunt grooves (423) are formed in the shunt box (421), and the first shunt groove (422) and the second shunt grooves (423) are Tesla valve grooves. The first diversion groove (422) is communicated with the liquid leakage groove (412) arranged at the bending part of the flow guide pipe (411), and the two second diversion grooves (423) are respectively communicated with the remaining two liquid leakage grooves (412), and the diversion box (421) is fixedly connected below the flow guide pipe (411).

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