Feeding device for freshwater fish culture

Abstract

The invention relates to the technical field of freshwater fish culture feeding, and discloses a feeding device for freshwater fish culture, which comprises a feed hopper and further comprises a cart, the bottom of the feed hopper is connected to the top of the cart through a rotating mechanism, and the cart is used for deflecting the feed hopper; the feed throwing mechanism is arranged on one side of the feed hopper, is connected with the feed hopper through a feed conveying pipe and is used for conveying and throwing out the feed in the feed hopper; and the dredging mechanism is arranged in the feed hopper. According to the feed throwing mechanism, through the rotary stirring effect of the feed throwing assembly in the feed throwing mechanism, feed can be evenly thrown out in the tangential direction of the feed throwing holes. Synchronous operation of feed conveying and throwing is achieved, the feeding efficiency is improved, complexity and energy consumption of equipment are reduced, smoothness and continuity of the feeding process are ensured, meanwhile, feed distribution is uniform, the feeding amount is accurately adjusted, the nutritional requirements of fishes can be met, growth differences caused by insufficient or excessive feed are reduced, and the feeding quality of the fishes is improved. The growth speed and the survival rate of fishes are improved.

Description

Technical Field

[0001] The invention relates to the technical field of feeding in freshwater fish culture, in particular to a feeding device used for freshwater fish culture. Background Art

[0002] Freshwater fish farming is an important part of the inland aquaculture industry. With the continuous expansion of the scale of aquaculture, the performance and efficiency of the feeding device have an increasingly significant impact on the aquaculture effect. At present, the commonly used feeding methods in freshwater fish farming mainly include fixed feeding machines and manual throwing. However, both methods have certain limitations.

[0003] Fixed feeder: Although the feeding speed is fast, due to the fixed position, the feeding range is limited and it is difficult to cover the entire breeding area, resulting in uneven distribution of bait. Manual spreading: Although the feeding position is flexible, it is inefficient, labor-intensive, and difficult to achieve uniform feeding and timed and quantitative feeding. For example, the patent with application number CN201921246996.9 discloses a freshwater aquaculture feed feeding device, which drives the fixed plate to move through a hydraulic cylinder and uses a screw rod and a rotating frame to realize the transportation and spreading of bait. Although the device can achieve continuous feeding and large-area coverage of bait, it still has shortcomings in the following aspects:

[0004] Limited adjustment of feeding amount: The device mainly feeds by driving the spiral rod and the rotating frame through a motor, but lacks an accurate feeding amount adjustment mechanism and is difficult to adapt to the needs of different breeding densities and fish growth stages. In a high-density breeding environment, the above method is difficult to evenly disperse the bait, resulting in serious fish food snatching phenomenon. Some fish find it difficult to obtain enough bait, affecting their growth. Therefore, a feeding device for freshwater fish breeding is proposed to solve the above-mentioned problems. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a feeding device for freshwater fish farming in view of the deficiencies in the above-mentioned prior art.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is: a feeding device for freshwater fish farming, comprising a feed hopper, and also comprising:

[0007] A cart, wherein the bottom of the feed hopper is connected to the top of the cart through a rotating mechanism for deflecting the feed hopper;

[0008] A throwing mechanism is arranged on one side of the feed hopper and connected via a feed delivery pipe, and is used for transmitting and throwing out the feed in the feed hopper;

[0009] A dredging mechanism is arranged inside the feed hopper and is used for dredging the feed hopper;

[0010] Wherein, the throwing mechanism comprises:

[0011] A throwing cylinder is fixedly mounted on the right side of the outer wall of the feeding pipe;

[0012] A throwing shaft is installed on the inner wall of the throwing barrel, and a plurality of equally spaced throwing assemblies are fixedly connected to the outer wall of the throwing shaft, which is used to drive the feed to rotate in the throwing barrel when rotating;

[0013] The outer wall of the throwing cylinder is provided with a throwing hole, which is used to throw the feed rotating with the throwing assembly along the tangent direction of the throwing hole;

[0014] An arc-shaped baffle plate is slidably connected to the outer wall of the throwing tube and is located at the throwing hole, and is used to adjust the size of the throwing hole;

[0015] The adjusting component is arranged on the outer wall of the throwing tube and is used for adjusting the throwing amount of the throwing component.

[0016] Preferably, the throwing assembly comprises:

[0017] A plurality of throwing plates are equally divided and fixedly connected to the outer wall of the throwing shaft;

[0018] A plurality of second throwing plates are hinged on the outer wall of the first throwing plate, and a torsion spring is provided at the hinge to reset the second throwing plate;

[0019] A circular groove is provided on the throwing shaft;

[0020] A pull rope is fixedly connected to the inner side of each of the second throwing plates, and the other end of the pull rope is connected to the adjustment component for pulling the second throwing plate to deflect.

[0021] Preferably, the adjustment component comprises:

[0022] A plurality of adjustment plates are arranged in the circular groove of the throwing shaft;

[0023] Three telescopic springs are fixedly connected to the inner side of each adjusting plate, and the other end of the telescopic spring is connected to the inner wall of the circular groove, so as to fix and reset the adjusting plate to the outside;

[0024] Two fixed blocks, fixedly connected to the outer wall of the throwing cylinder;

[0025] An adjusting rod is movably connected in through holes provided on the two fixing blocks;

[0026] An arc-shaped push block is fixedly connected to one side of the adjusting rod, and the inner side wall of the arc-shaped push block is in contact with the outer wall of the adjusting plate, so as to push the adjusting plate to retract;

[0027] A fan-shaped push plate is fixedly connected to the outer wall of the arc-shaped baffle plate and slides on the outer wall of the throwing tube, and the arc-shaped inner side of the fan-shaped push plate is in contact with the other side of the adjusting rod;

[0028] The spring is sleeved on the outer wall of the adjusting rod, and the two sides of the spring are respectively connected to the arc-shaped push block and the fixing block below, so as to reset the arc-shaped push block upward.

[0029] Preferably, a plurality of spherical grooves are formed on the arc-shaped inner wall of the fan-shaped push plate, and one end of the adjusting rod is spherically arranged and fits in the spherical groove.

[0030] Preferably, the dredging mechanism comprises:

[0031] Motor 2 is fixedly connected to the outer wall of the feed pipe, and the feed pipe is fixedly connected to the bottom of the feed hopper, and the feed pipe is communicated with the feed hopper;

[0032] A feeding screw rod is rotatably connected to the inner wall of the feeding pipe, and one end of the feeding screw rod is connected to the output end of the second motor, and the other end of the feeding screw rod is connected to the throwing shaft, so as to synchronously drive the throwing shaft to rotate;

[0033] A feed discharge pipe, the top of which is connected to the right side of the bottom of the feed delivery pipe, and the bottom of which is connected to the left side of the outer wall of the throwing barrel, for conveying feed.

[0034] Preferably, the dredging mechanism further comprises:

[0035] A lower fixing rod and an upper fixing rod are fixedly connected to the inner wall of the feed hopper;

[0036] Two dredging rods are movably connected to the two upper fixed rods respectively;

[0037] A plurality of dredging rods 2, fixedly connected to the outer wall of the dredging rod 1, for moving the feed;

[0038] A plurality of grooves are provided on the outer wall of the feeding screw rod and are in contact with the bottom of the dredging rod 1 so as to push the dredging rod 1 upward.

[0039] Preferably, the rotating mechanism comprises:

[0040] A rotating column is rotatably connected to the top of the cart, and a coil spring is provided at the connection between the rotating column and the cart for resetting the rotating column;

[0041] Motor 1 is fixedly connected to the top of the cart, and a conical residual gear is fixedly sleeved on the output end of the motor 1;

[0042] The conical gear block is fixedly connected to the outer wall of the rotating column and meshes with the conical residual gear.

[0043] Preferably, two levers are fixedly connected to the top of the cart, and one end of the lever is arranged inside the feed hopper and has the same shape as the cross-section of the feed hopper.

[0044] The present invention adopts the above technical solution to bring the following beneficial effects:

[0045] 1. The feeding device for freshwater fish farming can evenly throw out feed along the tangent direction of the feeding hole through the rotating toggle action of the feeding assembly in the feeding mechanism. This design makes the distribution of feed in the farm more uniform, avoids the situation of local feed accumulation or shortage, improves the utilization rate of feed, and also reduces the phenomenon of fish snatching food due to uneven feed distribution, which is beneficial to the healthy growth of fish. At the same time, the feeding shaft is connected to the feeding screw rod, realizing the synchronous operation of feed transportation and throwing, improving the feeding efficiency, reducing the complexity and energy consumption of the equipment, ensuring the smoothness and continuity of the feeding process, and at the same time, the uniform feed distribution and precise feeding amount adjustment can meet the nutritional needs of fish, reduce the growth differences caused by insufficient or excessive feed, and improve the growth rate and survival rate of fish.

[0046] 2. The feeding device for freshwater fish farming can flexibly adjust the amount of feed thrown according to actual farming needs through the synergistic effect of the arc baffle and the adjustment component. The arc baffle directly controls the outflow of feed by adjusting the size of the throwing hole, and the adjustment component further adjusts the rotation radius of the throwing component by changing the deflection angle of the throwing plate 2, thereby achieving precise control of the amount of feeding. This multi-level adjustment mechanism enables the feeding device to adapt to different farming densities, different fish growth stages and different seasons of feeding needs, improving the versatility and practicality of the equipment.

[0047] 3. The feeding device for freshwater fish farming has a rotating mechanism designed to enable the feed bucket to deflect left and right, thereby changing the feeding direction of the throwing barrel. Through the meshing drive of the motor 1 and the conical residual gear, the feed bucket can perform feeding operations at multiple angles as needed to ensure that the feed can cover the entire breeding area, avoiding the problem of uneven feed distribution caused by fixed feeding direction. The adjustment of the feeding direction is achieved through motor drive, which is easy to operate and highly automated, reducing manual intervention and improving feeding efficiency and accuracy.

[0048] 4. The design of the feeding screw rod and the dredging rod in the dredging mechanism of the feeding device for freshwater fish farming can effectively prevent the feed from being blocked in the feed hopper. The rotation of the feeding screw rod not only realizes the feeding of the feed, but the groove on its outer wall can also drive the dredging rod to move up and down, further moving the feed to ensure smooth feeding of the feed. During the deflection of the feed hopper, the lever will move relatively, further moving the feed, and enhancing the dredging effect. This double dredging mechanism effectively avoids the phenomenon of feed blockage, improves the operating stability and reliability of the equipment, and reduces equipment failures and maintenance costs caused by blockage. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 It is an isometric structural schematic diagram of the present invention;

[0050] Figure 2 It is a schematic diagram of the back structure of the present invention;

[0051] Figure 3 This is a schematic diagram of the exploded structure of the rotating mechanism of the present invention;

[0052] Figure 4 This is a schematic diagram of the explosion structure of the dredging mechanism of the present invention;

[0053] Figure 5 For the present invention Figure 4 The enlarged structural diagram at A in the middle;

[0054] Figure 6 It is a schematic diagram of the explosion structure of the material throwing mechanism of the present invention;

[0055] Figure 7 This is a schematic diagram of the structure of the regulating component of the present invention;

[0056] Figure 8 It is a schematic diagram of the structure of the throwing assembly of the present invention;

[0057] Fig. 9 It is a schematic diagram of the structure of the adjustment plate of the present invention.

[0058] In the figure: 1, cart; 2, rotating mechanism; 21, rotating column; 22, conical gear block; 23, motor 1; 24, conical residual gear; 25, lever; 3, feed hopper; 4, feeding pipe; 5, throwing mechanism; 51, throwing barrel; 52, throwing shaft; 53, throwing assembly; 531, throwing plate 1; 532, throwing plate 2; 533, pull rope; 54, adjustment assembly; 541, adjustment plate; 542, telescopic spring; 543, fixed block; 544, adjustment rod; 545, spring; 546, arc push block; 547, fan-shaped push plate; 55, arc baffle; 6, dredging mechanism; 61, motor 2; 62, feeding screw rod; 63, feeding pipe; 64, lower fixed rod; 65, groove; 66, dredging rod 1; 67, upper fixed rod; 68, dredging rod 2. DETAILED DESCRIPTION

[0059] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0060] See also Figure 1-9 One embodiment of the present invention is: a feeding device for freshwater fish farming, comprising a feed hopper 3, and also comprising:

[0061] The bottom of the cart 1 and the feed hopper 3 are connected to the top of the cart 1 through a rotating mechanism 2 for deflecting the feed hopper 3;

[0062] The throwing mechanism 5 is arranged on one side of the feed hopper 3 and connected through the feed delivery pipe 4, and is used for transmitting and throwing the feed in the feed hopper 3;

[0063] A dredging mechanism 6 is arranged inside the feed hopper 3 and is used to dredge the feed hopper 3;

[0064] Wherein, the throwing mechanism 5 comprises:

[0065] The throwing cylinder 51 is fixedly mounted on the right side of the outer wall of the feeding pipe 4;

[0066] The throwing shaft 52 is installed on the inner wall of the throwing cylinder 51, and the outer wall of the throwing shaft 52 is fixedly connected with a plurality of equally spaced throwing assemblies 53, which are used to drive the feed to rotate in the throwing cylinder 51 when rotating;

[0067] The outer wall of the throwing cylinder 51 is provided with a throwing hole, which is used to throw the feed rotating with the throwing assembly 53 along the tangent direction of the throwing hole;

[0068] The arc-shaped baffle 55 is slidably connected to the outer wall of the throwing tube 51 and is located at the throwing hole, and is used to adjust the size of the throwing hole;

[0069] The adjusting component 54 is arranged on the outer wall of the throwing tube 51 and is used for adjusting the throwing amount of the throwing component 53 .

[0070] The throwing assembly 53 comprises:

[0071] A plurality of throwing plates 531, equally divided and fixedly connected to the outer wall of the throwing shaft 52;

[0072] A plurality of second throwing plates 532 are hinged to the outer wall of the first throwing plate 531, and a torsion spring is provided at the hinge to reset the second throwing plate 532;

[0073] A circular groove is provided on the throwing shaft 52;

[0074] A pull rope 533 is fixedly connected to the inner side of each second throwing plate 532 , and the other end of the pull rope 533 is connected to the adjustment component 54 for pulling the second throwing plate 532 to deflect.

[0075] The adjustment assembly 54 includes:

[0076] A plurality of adjustment plates 541 are arranged in the circular groove of the throwing shaft 52;

[0077] Three telescopic springs 542 are fixedly connected to the inner side of each adjustment plate 541, and the other end of the telescopic spring 542 is connected to the inner wall of the circular groove, so as to fix and reset the adjustment plate 541 to the outside;

[0078] Two fixing blocks 543 are fixedly connected to the outer wall of the throwing tube 51;

[0079] The adjusting rod 544 is movably connected to the through holes formed on the two fixing blocks 543;

[0080] The arc-shaped push block 546 is fixedly connected to one side of the adjustment rod 544, and the inner side wall of the arc-shaped push block 546 is in contact with the outer wall of the adjustment plate 541, so as to push the adjustment plate 541 to retract;

[0081] The fan-shaped push plate 547 is fixedly connected to the outer wall of the arc-shaped baffle plate 55 and slides on the outer wall of the throwing tube 51, and the arc-shaped inner side of the fan-shaped push plate 547 is in contact with the other side of the adjustment rod 544;

[0082] The spring 545 is sleeved on the outer wall of the adjusting rod 544 , and the two sides of the spring 545 are respectively connected to the arc-shaped push block 546 and the fixing block 543 below, so as to reset the arc-shaped push block 546 upward.

[0083] The arc-shaped inner wall of the sector-shaped push plate 547 is provided with a plurality of spherical grooves, and one end of the adjustment rod 544 is spherically arranged and fits into the spherical grooves.

[0084] Working principle: In the process of freshwater fish farming, this feeding device achieves efficient and accurate feed feeding through a series of collaborative mechanisms, and at the same time has good dredging and adjustment functions to adapt to different farming needs;

[0085] When feeding is needed, first pour the feed into the feed hopper 3. The feed hopper 3 is connected to the top of the cart 1 through the rotating mechanism 2, and the feeding direction can be adjusted as needed. The feed is transmitted to the throwing tube 51 through the feeding pipe 4. At this time, the motor 1 23 drives the feeding screw rod 62 to rotate, and at the same time drives the throwing shaft 52 to rotate, and the throwing assembly 53 on the throwing shaft 52 rotates accordingly. The throwing plate 1 531 and the throwing plate 2 532 use their arc structures to move the feed and throw it along the tangent direction of the throwing hole, and the feed is evenly thrown into the farm;

[0086] According to the feeding demand on site, the feeding amount can be adjusted by toggling the fan-shaped push plate 547. The movement of the fan-shaped push plate 547 drives the arc-shaped baffle plate 55 to move, thereby reducing or increasing the size of the throwing hole, thereby achieving precise control of the feed throwing amount;

[0087] At the same time, the spherical groove on the fan-shaped push plate 547 will interfere with the adjustment rod 544 and limit the movement of the adjustment rod 544 through the spherical groove. The movement of the adjustment rod 544 will push the arc-shaped push block 546, and then squeeze the adjustment plate 541. The movement of the adjustment plate 541 pulls the second throwing plate 532 to deflect through the pull rope 533, reducing the rotation radius of the throwing assembly, thereby reducing the amount of feed thrown, and further improving the feeding effect. When it is necessary to increase the amount of feed thrown, reset the fan-shaped push plate 547, and the spring 545 will pull the arc-shaped push block 546 to move outward to reduce the squeezing of the adjustment plate 541. The telescopic spring 542 resets the adjustment plate 541 and releases the deflection force of the second throwing plate 532, so that it is reset under the action of the torsion spring, expanding the throwing radius, thereby increasing the amount of feed thrown;

[0088] Uniform feed distribution and precise feed amount adjustment can meet the nutritional needs of fish, reduce growth differences caused by insufficient or excessive feed, and improve the growth rate and survival rate of fish.

[0089] See also Figure 1-9 On the basis of the above embodiment, in another embodiment of the present invention, the dredging mechanism 6 comprises:

[0090] The second motor 61 is fixedly connected to the outer wall of the feed pipe 4, and the feed pipe 4 is fixedly connected to the bottom of the feed hopper 3, and the feed pipe 4 is communicated with the feed hopper 3;

[0091] The feeding screw rod 62 is rotatably connected to the inner wall of the feeding pipe 4, and one end of the feeding screw rod 62 is connected to the output end of the motor 2 61, and the other end of the feeding screw rod 62 is connected to the throwing shaft 52, which is used to synchronously drive the throwing shaft 52 to rotate;

[0092] The feed discharge pipe 63 has its top connected to the right side of the bottom of the feed delivery pipe 4, and its bottom connected to the left side of the outer wall of the throwing cylinder 51 for conveying feed.

[0093] The dredging mechanism 6 also includes:

[0094] The lower fixing rod 64 and the upper fixing rod 67 are fixedly connected to the inner wall of the feed hopper 3;

[0095] Two dredging rods 66 are movably connected to two upper fixing rods 67;

[0096] A plurality of dredging rods 68 are fixedly connected to the outer wall of the dredging rod 66 and are used to move the feed;

[0097] A plurality of grooves 65 are provided on the outer wall of the feeding screw rod 62 and are in contact with the bottom of the dredging rod 66 so as to push the dredging rod 66 upward.

[0098] Working principle: To prevent the feed from being blocked in the feed hopper 3, the dredging mechanism 6 plays an important role. When the motor 2 61 rotates, the feeding screw 62 rotates accordingly, and the feed is transported to the right side of the feeding pipe 4 along the feeding screw 62, and enters the throwing cylinder 51 through the feeding pipe 63, so as to realize the continuous feeding of the feed;

[0099] At the same time, the groove 65 on the outer wall of the feeding screw rod 62 will constantly resist the dredging rod 1 66, causing it to move up and down. The movement of the dredging rod 1 66 drives the dredging rod 2 68 to continuously move the feed up and down, further promoting the feeding of the feed, and effectively preventing the feed from being blocked in the feed hopper 3.

[0100] See also Figure 1-9 Based on the above embodiment, in another embodiment of the present invention, the rotating mechanism 2 includes:

[0101] A rotating column 21 is rotatably connected to the top of the cart 1, and a coil spring is provided at the connection between the rotating column 21 and the cart 1 for resetting the rotating column 21;

[0102] The motor 1 23 is fixedly connected to the top of the cart 1, and the output end of the motor 1 23 is fixedly sleeved with a conical residual gear 24;

[0103] The conical gear block 22 is fixedly connected to the outer wall of the rotating column 21 and meshes with the conical residual gear 24 .

[0104] Two levers 25 are fixedly connected to the top of the cart 1 , and one end of the lever 25 is arranged inside the feed hopper 3 and has the same shape as the cross section of the feed hopper 3 .

[0105] Working principle: The bait throwing direction is adjusted by the rotating mechanism 2. The rotating column 21 is meshed with the bevel gear 24 at the output end of the motor 1 23 through the bevel gear block 22. When the motor 1 23 is started, the bevel gear 24 rotates, driving the bevel gear block 22 to deflect, thereby driving the rotating column 21 to rotate. When the bevel gear 24 is out of mesh with the bevel gear block 22, the coil spring will drive the rotating column 21 to reset until it is meshed again and drives the bevel gear block 22 to deflect again. This is repeated to achieve the left and right deflection of the feed hopper 3 and change the bait throwing direction of the throwing cylinder 51.

[0106] The lever 25 on the top of the cart 1 moves relatively when the feed bucket 3 deflects, further moving the feed in the feed bucket 3, enhancing the dredging effect, and preventing feed from piling up and clogging.

[0107] The present invention provides a feeding device for freshwater fish farming. There are many methods and ways to implement the technical solution. The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention. All components not specified in this embodiment can be implemented by existing technologies.

Claims

1. A feeding device for freshwater fish farming, comprising a feed hopper (3), characterized in that: Also includes: A cart (1), wherein the bottom of the feed hopper (3) is connected to the top of the cart (1) via a rotating mechanism (2) for deflecting the feed hopper (3); A throwing mechanism (5) is arranged on one side of the feed hopper (3) and is connected via a feed delivery pipe (4) and is used for transmitting and throwing out the feed in the feed hopper (3); A dredging mechanism (6) is arranged inside the feed hopper (3) and is used to dredge the feed hopper (3); Wherein, the throwing mechanism (5) comprises: A throwing cylinder (51) is fixedly mounted on the right side of the outer wall of the feeding pipe (4); A throwing shaft (52) is mounted on the inner wall of the throwing cylinder (51), and a plurality of equally spaced throwing assemblies (53) are fixedly connected to the outer wall of the throwing shaft (52) and are used to drive the feed to rotate in the throwing cylinder (51) when rotating; The outer wall of the throwing cylinder (51) is provided with a throwing hole for throwing the feed rotating along with the throwing assembly (53) along the tangent direction of the throwing hole; An arc-shaped baffle (55) is slidably connected to the outer wall of the throwing tube (51) and is located at the throwing hole, and is used to adjust the size of the throwing hole; An adjusting component (54) is arranged on the outer wall of the throwing cylinder (51) and is used to adjust the throwing amount of the throwing component (53).

2. A feeding device for freshwater fish farming according to claim 1, characterized in that: The throwing assembly (53) comprises: A plurality of material throwing plates (531), equally divided and fixedly connected to the outer wall of the material throwing rotating shaft (52); A plurality of second throwing plates (532) are hinged on the outer wall of the first throwing plate (531), and a torsion spring is provided at the hinge to reset the second throwing plate (532); The throwing shaft (52) is provided with a circular groove; A pull rope (533) is fixedly connected to the inner side of each of the second throwing plates (532), and the other end of the pull rope (533) is connected to the adjustment component (54) for pulling the second throwing plate (532) to deflect.

3. A feeding device for freshwater fish farming according to claim 2, characterized in that: The adjustment component (54) comprises: A plurality of adjustment plates (541) are arranged in the circular groove of the throwing shaft (52); Three telescopic springs (542) are fixedly connected to the inner side of each adjusting plate (541), and the other end of the telescopic spring (542) is connected to the inner wall of the circular groove, so as to fix and reset the adjusting plate (541) to the outside; Two fixed blocks (543) fixedly connected to the outer wall of the throwing cylinder (51); An adjusting rod (544) is movably connected to through holes provided on the two fixing blocks (543); An arc-shaped push block (546) is fixedly connected to one side of the adjustment rod (544), and the inner side wall of the arc-shaped push block (546) is in contact with the outer wall of the adjustment plate (541), so as to push the adjustment plate (541) to retract; A fan-shaped push plate (547) is fixedly connected to the outer wall of the arc-shaped baffle (55) and slides on the outer wall of the throwing cylinder (51), and the arc-shaped inner side of the fan-shaped push plate (547) is in contact with the other side of the adjusting rod (544); The spring (545) is sleeved on the outer wall of the adjusting rod (544), and the two sides of the spring (545) are respectively connected to the arc-shaped push block (546) and the fixing block (543) below, so as to reset the arc-shaped push block (546) upward.

4. A feeding device for freshwater fish farming according to claim 3, characterized in that: The arc-shaped inner wall of the fan-shaped push plate (547) is provided with a plurality of spherical grooves, and one end of the adjustment rod (544) is spherically arranged and fits in the spherical grooves.

5. A feeding device for freshwater fish farming according to claim 4, characterized in that: The dredging mechanism (6) comprises: Motor 2 (61) is fixedly connected to the outer wall of the feed pipe (4), and the feed pipe (4) is fixedly connected to the bottom of the feed hopper (3), and the feed pipe (4) is communicated with the feed hopper (3); A feeding screw rod (62) is rotatably connected to the inner wall of the feeding pipe (4), and one end of the feeding screw rod (62) is connected to the output end of the second motor (61), and the other end of the feeding screw rod (62) is connected to the throwing shaft (52) for synchronously driving the throwing shaft (52) to rotate; A feed discharge pipe (63), the top of which is connected to the right side of the bottom of the feed delivery pipe (4), and the bottom of which is connected to the left side of the outer wall of the throwing cylinder (51), for conveying feed.

6. A feeding device for freshwater fish farming according to claim 5, characterized in that: The dredging mechanism (6) further comprises: A lower fixing rod (64) and an upper fixing rod (67) are fixedly connected to the inner wall of the feed hopper (3); Two dredging rods (66) are movably connected to the two upper fixing rods (67); A plurality of dredging rods (68) are fixedly connected to the outer wall of the dredging rod (66) for moving the feed; A plurality of grooves (65) are provided on the outer wall of the feeding screw rod (62) and are in contact with the bottom of the dredging rod (66) so as to push the dredging rod (66) upward.

7. A feeding device for freshwater fish farming according to claim 6, characterized in that: The rotating mechanism (2) comprises: A rotating column (21) is rotatably connected to the top of the cart (1), and a coil spring is provided at the connection between the rotating column (21) and the cart (1) for resetting the rotating column (21); Motor 1 (23) is fixedly connected to the top of the cart (1), and the output end of motor 1 (23) is fixedly sleeved with a conical residual gear (24); The conical gear block (22) is fixedly connected to the outer wall of the rotating column (21) and meshes with the conical residual gear (24).

8. A feeding device for freshwater fish farming according to claim 7, characterized in that: Two levers (25) are fixedly connected to the top of the cart (1), and one end of the lever (25) is arranged inside the feed hopper (3) and has the same shape as the cross section of the feed hopper (3).

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