A uniform feeding device for penaeid shrimp culture

Abstract

The application discloses a uniform feeding device for South American prawn culture, which comprises a feeding boat assembly, the feeding boat assembly comprises a boat bottom plate and a boat body arranged on the boat bottom plate, a rudder is arranged on the boat bottom plate, and a floating strip is arranged on the boat body, and the uniform feeding device further comprises a feeding mode self-adaptive switching mechanism, a feeding rate adjusting mechanism and a translation driving mechanism arranged on the boat bottom plate. The application relates to the technical field of feeding devices, and particularly provides the uniform feeding device for South American prawn culture, which has the advantages of simple structure, self-adaptive switching of working states, more uniform feeding, and the feeding rate can be adjusted according to the use demand.

Description

A uniform feeding device for South American shrimp farming Technical Field

[0001] This invention relates to the field of feeding device technology, specifically to a uniform feeding device for South American shrimp farming. Background Technology

[0002] In recent years, shrimp farming technology has become increasingly sophisticated. When farming shrimp, the feeding process is particularly important. In the process of feeding, it is necessary to ensure the uniformity of the feed and to ensure that the feed meets the growth needs of the shrimp.

[0003] Current technology typically employs manual feeding, where workers propel a boat to the starting point and then slowly and evenly scatter the feed across the aquaculture pond. However, this method has several drawbacks: firstly, manual scattering can lead to uneven feed distribution; even with modern automated feeding boats, the boat's movement, the timing of feed distribution, and the rate of feed distribution all require complex drive and control structures, significantly increasing aquaculture costs and the failure rate during the feeding process. Summary of the Invention

[0004] In view of the above situation and to overcome the defects of the prior art, the present invention provides a uniform feeding device for South American shrimp farming that has a simple structure, can adaptively switch working states, feeds more evenly, and can adjust the feeding rate according to usage requirements.

[0005] The technical solution adopted by the present invention is as follows: The present invention provides a uniform feeding device for South American shrimp farming, including a feeding boat assembly. The feeding boat assembly includes a bottom plate and a hull provided on the bottom plate. The bottom plate is provided with a rudder, and the hull is provided with floats. The uniform feeding device also includes a feeding mode adaptive switching mechanism, a feeding rate adjustment mechanism, and a translation drive mechanism provided on the bottom plate.

[0006] Furthermore, the adaptive feeding mode switching mechanism includes a bait box, a spiral feeding assembly, and a speed-sensing valve plate assembly. The bait box is located on the bottom plate of the ship, and a feeding channel is provided at the bottom of the bait box. The feeding channel includes a feeding chamber located at the bottom of the bait box and a feeding pipe communicating with the feeding chamber. A bottom plate center hole is provided on the bottom plate, and the outlet of the feeding pipe extends through the bottom plate center hole to the bottom of the ship's bottom plate. The spiral feeding assembly is located on the feeding pipe, and the speed-sensing valve plate assembly is located on the spiral feeding assembly.

[0007] Preferably, the spiral feeding assembly includes a feeding spindle and a spiral auger. A feeding shaft support is provided on the bottom plate. The feeding spindle is rotatably mounted on the feeding shaft support and passes through the feeding pipe. The spiral auger is mounted on the feeding spindle. The speed-sensitive valve plate assembly includes an inertia nut, an annular housing, and a nut return spring. The feeding spindle has a threaded portion. The inertia nut is threadedly connected to the threaded portion. The annular housing is rotatably sleeved on the inertia nut. A sliding valve plate is provided on the annular housing. The sliding valve plate is inserted into the feeding chamber. The nut return spring is sleeved on the feeding spindle. The two ends of the nut return spring are respectively located on the annular housing and the bait box.

[0008] Furthermore, the material dropping rate adjustment mechanism includes a speed regulating shaft assembly, which includes a speed regulating main shaft and a driving bevel gear. A speed regulating shaft bracket is provided on the bottom plate. The speed regulating main shaft is rotatably mounted on the speed regulating shaft bracket. The driving bevel gear is sleeved on the speed regulating main shaft. A driven bevel gear is sleeved on the material dropping main shaft. The driven bevel gear meshes with the driving bevel gear. The material dropping rate adjustment mechanism also includes a variable transmission component for transmitting power between the material dropping rate adjustment mechanism and the translation drive mechanism.

[0009] Preferably, the variable transmission assembly includes a fixed pulley, an adjustable pulley, and a steel belt. The fixed pulley is mounted on the translation drive mechanism, the adjustable pulley is mounted on the speed regulating spindle, and the steel belt is sleeved on the fixed pulley and the adjustable pulley.

[0010] As a further preferred embodiment of the present invention, the adjustable pulley is composed of a fixed conical pulley and a sliding conical pulley. The fixed conical pulley is sleeved on the speed regulating main shaft, and the sliding conical pulley is arranged opposite to the fixed conical pulley and is engaged and slidably connected with the speed regulating main shaft. The steel belt is engaged with the conical surfaces of the fixed conical pulley and the sliding conical pulley. The speed regulating main shaft is provided with a pre-tightening component parallel to the sliding conical pulley.

[0011] Preferably, the pre-tightening assembly includes a fixed retaining ring and a pre-tightening retaining spring. The fixed retaining ring is sleeved on the speed regulating spindle, and the pre-tightening retaining spring is sleeved on the speed regulating spindle. The two ends of the pre-tightening retaining spring are respectively connected to the fixed retaining ring and the sliding conical wheel.

[0012] Furthermore, the translation drive mechanism includes a translation guide seat and a propeller assembly. The translation guide seat is disposed on the bottom plate of the ship. The propeller assembly includes a propeller bracket, a propeller spindle, and a propeller body. The propeller bracket is slidably disposed on the translation guide seat. The propeller spindle is rotatably disposed on the propeller bracket. The propeller body is disposed on the propeller spindle. The bottom plate of the ship is provided with a propeller groove, and the propeller body is located in the propeller groove.

[0013] The fixed pulley is fixedly connected to the main shaft of the impeller.

[0014] Preferably, the propeller support is provided with a motor drive device for driving the propeller spindle to rotate, and the bottom plate is provided with a screw adjustment device for adjusting the propeller support.

[0015] As a further preferred embodiment of the present invention, a fixed valve plate is provided in the unloading chamber, and the fixed valve plate is slidably connected to the sliding valve plate.

[0016] The beneficial effects of this invention using the above structure are as follows: This solution is equipped with a feeding mode adaptive switching mechanism, which enables automatic switching between non-feeding and feeding states. In the non-feeding state, in order to quickly reach the designated feeding area, the device travels at a higher speed, and the feeding channel automatically remains closed in this state. In the feeding state, the device travels at a lower speed, and the feeding channel automatically opens, thereby enabling stable and uniform feeding. By adjusting the position of the sliding valve plate assembly at different travel speeds, the current operating state of the device can be adaptively identified based on its current travel speed, thus automatically and accurately determining whether bait needs to be added.

[0017] This solution is equipped with a feeding rate adjustment mechanism, which can adjust the continuous feeding rate while keeping the travel speed constant, thereby meeting the growth needs of South American shrimp at different stages and in different scenarios. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0019] Figure 1 is a perspective view of an embodiment of the present invention;

[0020] Figure 2 is a front view of an embodiment of the present invention;

[0021] Figure 3 is a top view of an embodiment of the present invention;

[0022] Figure 4 is a sectional view along section AA in Figure 2;

[0023] Figure 5 is a sectional view along section BB in Figure 4;

[0024] Figure 6 is a sectional view along section CC in Figure 4;

[0025] Figure 7 is a sectional view along section DD in Figure 2;

[0026] Figure 8 is an enlarged view of part A in Figure 3;

[0027] Figure 9 is an enlarged view of part B in Figure 7;

[0028] Figure 10 is an enlarged view of part C in Figure 4;

[0029] Figure 11 is an enlarged view of part D in Figure 4;

[0030] Figure 12 is a schematic diagram of the adaptive switching mechanism for feeding mode in an embodiment of the present invention;

[0031] Figure 13 is a schematic diagram of the material feeding rate adjustment mechanism in an embodiment of the present invention;

[0032] Figure 14 is a schematic diagram of the translation drive mechanism in an embodiment of the present invention;

[0033] Figure 15 is a schematic diagram of the structure of the feeding vessel assembly in an embodiment of the present invention.

[0034] The components include: 1. Adaptive feeding mode switching mechanism; 2. Material dropping rate adjustment mechanism; 3. Translation drive mechanism; 4. Feeding boat assembly; 5. Feed box; 6. Spiral feeding assembly; 7. Speed-sensing valve plate assembly; 8. Feeding chamber; 9. Fixed valve plate; 10. Feeding pipe; 11. Material dropping shaft support; 12. Material dropping main shaft; 13. Spiral auger; 14. Driven bevel gear; 15. Inertia nut; 16. Annular shell; 17. Nut return spring; 18. Threaded part; 19. Sliding valve plate; 20. Speed ​​regulating shaft assembly; 21. Variable transmission assembly; 22. Pre-load... 23. Speed ​​regulating shaft bracket, 24. Speed ​​regulating main shaft, 25. Drive bevel gear, 26. Fixed pulley, 27. Adjustable pulley, 28. Steel belt, 29. Fixed retaining ring, 30. Preload retaining spring, 31. Fixed conical wheel, 32. Sliding conical wheel, 33. Translation guide seat, 34. Propeller assembly, 35. Motor drive device, 36. Screw adjustment device, 37. Propeller bracket, 38. Propeller main shaft, 39. Propeller body, 40. Bottom plate, 41. Hull, 42. Rudder, 43. Buoys, 44. Bottom plate center hole, 45. Propeller groove. Detailed Implementation

[0035] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0036] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0037] As shown in Figures 1-15, the present invention provides a uniform feeding device for shrimp farming, comprising a feeding boat assembly 4, which includes a bottom plate 40 and a hull 41 disposed on the bottom plate 40. The bottom plate 40 is provided with a rudder 42, and the hull 41 is provided with floats 43. The uniform feeding device also includes a feeding mode adaptive switching mechanism 1, a feeding rate adjustment mechanism 2, and a translation drive mechanism 3 disposed on the bottom plate 40.

[0038] The translation drive mechanism 3 includes a translation guide seat 33 and a propeller assembly 34. The translation guide seat 33 is mounted on the bottom plate 40. The propeller assembly 34 includes a propeller bracket 37, a propeller main shaft 38, and a propeller body 39. The propeller bracket 37 is slidably mounted on the translation guide seat 33. The propeller main shaft 38 is rotatably mounted on the propeller bracket 37. The propeller body 39 is mounted on the propeller main shaft 38. The bottom plate 40 is provided with a propeller groove 45, and the propeller body 39 is located in the propeller groove 45. The propeller bracket 37 is provided with a motor drive device 35 for driving the propeller main shaft 38 to rotate. The bottom plate 40 is provided with a screw adjustment device 36 for adjusting the propeller bracket 37.

[0039] The material discharge rate adjustment mechanism 2 includes a speed adjustment shaft assembly 20, which includes a speed adjustment main shaft 24 and a driving bevel gear 25. A speed adjustment shaft support 23 is provided on the bottom plate 40. The speed adjustment main shaft 24 is rotatably mounted on the speed adjustment shaft support 23. The driving bevel gear 25 is sleeved on the speed adjustment main shaft 24. A driven bevel gear 14 is sleeved on the material discharge main shaft 12. The driven bevel gear 14 meshes with the driving bevel gear 25. The material discharge rate adjustment mechanism 2 also includes a variable transmission assembly 21 for transmission between the material discharge rate adjustment mechanism 2 and the translation drive mechanism 3. The variable transmission assembly 21 includes a fixed pulley 26, an adjustable pulley 27, and a steel belt 28. The fixed pulley 26 is mounted on the translation drive mechanism 3, the adjustable pulley 27 is mounted on the speed adjustment main shaft 24, and the steel belt 28 is sleeved on the fixed pulley 26 and the adjustable pulley 27. The fixed pulley 26 is fixedly connected to the paddle wheel main shaft 38.

[0040] The adjustable pulley 27 consists of a fixed conical pulley 31 and a sliding conical pulley 32. The fixed conical pulley 31 is sleeved on the speed regulating main shaft 24, and the sliding conical pulley 32 is arranged opposite to the fixed conical pulley 31 and is engaged and slidably connected to the speed regulating main shaft 24. The steel belt 28 is engaged with the conical surfaces of the fixed conical pulley 31 and the sliding conical pulley 32. The speed regulating main shaft 24 is provided with a pre-tensioning assembly 22 parallel to the sliding conical pulley 32. The pre-tensioning assembly 22 includes a fixed retaining ring 29 and a pre-tensioning retaining spring 30. The fixed retaining ring 29 is sleeved on the speed regulating main shaft 24, and the pre-tensioning retaining spring 30 is sleeved on the speed regulating main shaft 24. The two ends of the pre-tensioning retaining spring 30 are respectively connected to the fixed retaining ring 29 and the sliding conical pulley 32.

[0041] The adaptive feeding mode switching mechanism 1 includes a bait box 5, a spiral feeding assembly 6, and a speed-sensing valve plate assembly 7. The bait box 5 is located on the bottom plate 40 of the ship. The bottom of the bait box 5 is provided with a feeding channel, which includes a feeding chamber 8 located at the bottom of the bait box 5 and a feeding pipe 10 connected to the feeding chamber 8. The bottom plate 40 is provided with a bottom plate center hole 44. The outlet of the feeding pipe 10 extends through the bottom plate center hole 44 to the bottom of the bottom plate 40. The spiral feeding assembly 6 is located on the feeding pipe 10, and the speed-sensing valve plate assembly 7 is located on the spiral feeding assembly 6. The feeding chamber 8 is provided with a fixed valve plate 9, which is slidably connected to the sliding valve plate 19.

[0042] The spiral feeding assembly 6 includes a feeding spindle 12 and a spiral auger 13. A feeding shaft support 11 is provided on the bottom plate 40. The feeding spindle 12 is rotatably mounted on the feeding shaft support 11 and passes through the feeding pipe 10. The spiral auger 13 is mounted on the feeding spindle 12. The speed-sensitive valve plate assembly 7 includes an inertia nut 15, an annular housing 16, and a nut return spring 17. A threaded part 18 is provided on the feeding spindle 12. The inertia nut 15 is threadedly connected to the threaded part 18. The annular housing 16 is rotatably sleeved on the inertia nut 15. A sliding valve plate 19 is provided on the annular housing 16. The sliding valve plate 19 is inserted into the feeding chamber 8. The nut return spring 17 is sleeved on the feeding spindle 12. The two ends of the nut return spring 17 are respectively located on the annular housing 16 and the bait box 5.

[0043] In practical use, add the feed into the feed box 5 and place the device in the breeding pond. Then, first switch the device to the feeding preparation state so that the device can quickly reach the designated feeding location. After moving to the designated location, switch the device to the feeding state to feed the feed.

[0044] When this device moves in the aquaculture pond, the motor drive device 35 drives the paddle wheel main shaft 38 and the paddle wheel body 39 to rotate. The paddle wheel body 39 drives the device to move in the aquaculture pond. The paddle wheel main shaft 38 drives the fixed pulley 26 to rotate. The fixed pulley 26 drives the adjustable pulley 27 to rotate through the steel belt 28. The adjustable pulley 27 drives the driving bevel gear 25 to rotate. The driving bevel gear 25 drives the driven bevel gear 14 to rotate. The driven bevel gear 14 drives the feeding main shaft 12 to rotate.

[0045] In the non-feeding state, the feeding boat assembly 4 moves rapidly by rapidly rotating the paddle wheel main shaft 38. At this time, the feeding main shaft 12 rotates at a relatively high speed. The feeding main shaft 12 will first rotate relative to the inertia nut 15. At this time, under the cooperation of the inertia nut 15 and the threaded part 18, the inertia nut 15 will overcome the elastic force of the nut return spring 17 and move the annular shell 16 towards the side closer to the bait box 5. At this time, the sliding range of the annular shell 16 is large and drives the sliding valve plate 19 to block the feeding chamber 8, and the feeding channel is closed. Therefore, no feeding will be carried out during the process of the device rapidly moving to the designated position.

[0046] Once the device moves to the designated position, it begins to move at a constant and slow speed. At this time, the speed at which the feeding spindle 12 drives the inertia nut 15 to rotate decreases. Therefore, the inertia nut 15 and the annular outer shell 16 will retract to a certain extent under the elastic force of the nut return spring 17. At this time, the feeding channel is opened, and the device switches to the feeding state.

[0047] When the device is stationary, the auger 13 does not rotate and the thread pitch of the auger 13 is small, so the granular bait cannot automatically fall into the water through the auger 13 under the action of gravity. Therefore, when the device is stationary, it is also in a non-feeding state.

[0048] After the feeding channel is opened, the feed in the feed box 5 falls into the feed pipe 10 through the feed chamber 8, and the feed is transported into the breeding pond by the spiral auger 13 driven by the feed main shaft 12.

[0049] The feeding speed can be adjusted according to the different growth stages and needs of South American shrimp. Specifically, the screw adjustment device 36 drives the paddle wheel support 37 to slide within the translation guide seat 33. The paddle wheel support 37 drives the paddle wheel main shaft 38 to move, and the paddle wheel main shaft 38 drives the fixed pulley 26 to move. When the fixed pulley 26 moves away from the adjustable pulley 27, the distance between the speed adjustment main shaft 24 and the paddle wheel main shaft 38 increases, and the steel belt 28 has the characteristic of not being stretchable. Therefore, the sliding conical wheel 32 will be forced away from the fixed conical wheel 31. When the fixed pulley 26 moves closer to the adjustable pulley 27... The distance between the fixed conical wheel 31 and the sliding conical wheel 32 will decrease under the elastic force of the pre-tightening retaining spring 30. However, during the adjustment of the screw adjustment device 36, the fixed pulley 26 and the adjustable pulley 27 are always well belt-driven through the steel belt 28. By changing the transmission ratio between the fixed pulley 26 and the adjustable pulley 27, the rotation speed of the discharge shaft 12 can be changed while the rotation speed of the paddle wheel main shaft 38 remains constant. That is, when the movement speed of this device is inconvenient, the amount of material discharged per unit volume can be changed, thereby meeting the growth needs of Litopenaeus vannamei at different stages.

[0050] In summary, this solution includes a feeding mode adaptive switching mechanism 1, which enables automatic switching between non-feeding and feeding states. In the non-feeding state, to quickly reach the designated feeding area, the device travels at a higher speed, and the feeding channel automatically remains closed. In the feeding state, the device travels at a lower speed, and the feeding channel automatically opens, allowing for stable and uniform feeding. By adjusting the position of the sliding valve plate 19 according to different travel speeds using the speed-sensing valve plate assembly 7, the current operating state of the device can be adaptively identified based on its current travel speed, thus automatically and accurately determining whether bait needs to be added.

[0051] This solution is equipped with a feeding rate adjustment mechanism 2. The feeding rate adjustment mechanism 2 can adjust the feeding rate while keeping the travel speed constant, thereby meeting the growth needs of South American shrimp at different stages and in different scenarios.

[0052] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0053] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the scope of the invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0054] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A uniform feeding device for shrimp farming in South America, comprising a feeding boat assembly (4), the feeding boat assembly (4) comprising a bottom plate (40) and a hull (41) disposed on the bottom plate (40), the bottom plate (40) being provided with a rudder (42), and the hull (41) being provided with floats (43), characterized in that: The uniform feeding device also includes a feeding mode adaptive switching mechanism (1), a dropping rate adjustment mechanism (2), and a translation drive mechanism (3) provided on the bottom plate (40). The feeding mode adaptive switching mechanism (1) includes a bait box (5), a spiral feeding assembly (6), and a speed-sensing valve plate assembly (7). The bait box (5) is provided on the bottom plate (40). The bottom of the bait box (5) is provided with a feeding channel. The feeding channel includes a feeding chamber (8) provided at the bottom of the bait box (5) and a feeding pipe (10) communicating with the feeding chamber (8). The bottom plate (40) is provided with a bottom plate center hole (44). The outlet of the feeding pipe (10) extends through the bottom plate center hole (44) to the bottom of the bottom plate (40). The spiral feeding assembly (6) is mounted on the feeding pipe (10), and the speed-sensing valve plate assembly (7) is mounted on the spiral feeding assembly (6). The spiral feeding assembly (6) includes a feeding spindle (12) and a spiral auger (13). A feeding shaft support (11) is provided on the bottom plate (40). The feeding spindle (12) is rotatably mounted on the feeding shaft support (11) and passes through the feeding pipe (10). The spiral auger (13) is mounted on the feeding spindle (12). The speed-sensing valve plate assembly (7) includes an inertia nut (15), an annular outer shell (16), and a nut return spring (17). A threaded part (18) is provided on the feeding spindle (12). The inertia nut (15) is connected to the feed pipe (10) by a thread. On the threaded part (18), the annular outer shell (16) is rotatably sleeved on the inertia nut (15). The annular outer shell (16) is provided with a sliding valve plate (19), which is inserted into the feeding chamber (8). The nut return spring (17) is sleeved on the feeding spindle (12), and the two ends of the nut return spring (17) are respectively provided on the annular outer shell (16) and the bait box (5). The feeding rate adjustment mechanism (2) includes a speed regulating shaft assembly (20), which includes a speed regulating spindle (24) and a drive bevel gear (25). The bottom plate (40) is provided with a speed regulating shaft bracket (23), and the speed regulating spindle (24) is rotatably mounted on the speed regulating shaft bracket (23). The driving bevel gear (25) is sleeved on the speed regulating spindle (24), and the driven bevel gear (14) is sleeved on the blanking spindle (12). The driven bevel gear (14) meshes with the driving bevel gear (25). The blanking speed regulating mechanism (2) also includes a variable transmission component (21) for transmitting power between the blanking speed regulating mechanism (2) and the translation drive mechanism (3). The variable transmission component (21) includes a fixed pulley (26), an adjustable pulley (27), and a steel belt (28). The fixed pulley (26) is mounted on the translation drive mechanism (3), the adjustable pulley (27) is mounted on the speed regulating spindle (24), and the steel belt (28) is sleeved on the fixed pulley (26) and the adjustable pulley (27).The adjustable pulley (27) consists of a fixed conical pulley (31) and a sliding conical pulley (32). The fixed conical pulley (31) is sleeved on the speed-regulating main shaft (24). The sliding conical pulley (32) is arranged opposite to the fixed conical pulley (31) and is engaged and slidably connected to the speed-regulating main shaft (24). The steel belt (28) mates with the conical surfaces of the fixed conical pulley (31) and the sliding conical pulley (32). The speed-regulating main shaft (24) is provided with a pre-tensioning assembly (22) parallel to the sliding conical pulley (32).

2. The uniform feeding device for South American shrimp farming according to claim 1, characterized in that: The pre-tightening assembly (22) includes a fixed retaining ring (29) and a pre-tightening retaining spring (30). The fixed retaining ring (29) is sleeved on the speed regulating spindle (24), and the pre-tightening retaining spring (30) is sleeved on the speed regulating spindle (24). The two ends of the pre-tightening retaining spring (30) are respectively connected to the fixed retaining ring (29) and the sliding conical wheel (32).

3. The uniform feeding device for South American shrimp farming according to claim 2, characterized in that: The translation drive mechanism (3) includes a translation guide seat (33) and a propeller assembly (34). The translation guide seat (33) is located on the bottom plate (40). The propeller assembly (34) includes a propeller bracket (37), a propeller spindle (38), and a propeller body (39). The propeller bracket (37) is slidably located on the translation guide seat (33). The propeller spindle (38) is rotatably located on the propeller bracket (37). The propeller body (39) is located on the propeller spindle (38). The bottom plate (40) is provided with a propeller groove (45). The propeller body (39) is located in the propeller groove (45).

4. The uniform feeding device for South American shrimp farming according to claim 3, characterized in that: The fixed pulley (26) is fixed to the paddle wheel spindle (38).

5. The uniform feeding device for South American shrimp farming according to claim 4, characterized in that: The propeller support (37) is provided with a motor drive device (35) for driving the propeller spindle (38) to rotate, and the bottom plate (40) is provided with a screw adjustment device (36) for adjusting the propeller support (37).

6. The uniform feeding device for South American shrimp farming according to claim 5, characterized in that: The unloading chamber (8) is provided with a fixed valve plate (9), which is slidably connected to the sliding valve plate (19).

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