A kind of anti-blocking unloading device for aquatic feed production packaging machine

Abstract

The patent discloses a kind of aquatic feed production packaging machine is prevented and is unloaded to device, including: main body structure, the main body structure includes storehouse and storehouse cover, storehouse outer wall is provided with surround edge, surround edge bottom is provided with support leg around, storehouse lower end is provided with unloading passage;For preventing unloading jam, anti-blocking mechanism is set in the two sides of storehouse outer wall, the anti-blocking mechanism includes support plate, first motor, reciprocating plate and vibration block, support plate is Z-shaped design and symmetrically welded on surround edge, first motor is installed on support plate, vibration block is located in the outer wall of reciprocating plate side close to storehouse, first motor drives vibration block and storehouse outer wall periodic reciprocating knock. By adopting crank slider reciprocating knock structure, left and right stagger knock timing avoids storehouse resonance compaction feed, low-frequency light knock shakes off shrimp and crab high-fat stickiness feed, eliminates the jam caused by inner wall material from source narrowing passage, substantially reduces artificial shovel scraping maintenance workload.

Description

Technical Field

[0001] This invention patent relates to the technical field of equipment related to aquatic feed production, specifically an anti-clogging feeding device for aquatic feed production and packaging machine. Background Technology

[0002] In the production of aquatic feed (fish, shrimp, and crab feed), packaging is the final and crucial step. The feeding device of the packaging machine transports the finished feed from the hopper to the packaging bags, and its operational stability directly affects packaging efficiency and product quality. However, blockages frequently occur during the feeding process of aquatic feed.

[0003] First, due to the characteristics of feed pellets, aquatic feeds (especially shrimp and crab feeds) contain high levels of oil and sticky components. The surface of the pellets is highly sticky, making them prone to sticking and accumulating on the inner wall of the hopper and in the feed pipes, gradually forming clumps and blocking the feed channels.

[0004] In addition, bridging and blockage are easily formed inside the silo. Aquatic feed pellets are lightweight and have high friction between pellets. After the material accumulates, a stable arched "bridge" will form above the feed outlet of the silo. The feeding channel below will run dry and stop feeding, causing the packaging machine to weigh the product inconsistently. A large number of unqualified packaging bags will appear, requiring frequent manual unclogging. This will cause the production line to stop frequently, resulting in a significant drop in production capacity and a large amount of manual scraping work. Summary of the Invention

[0005] The purpose of this invention is to provide an anti-clogging feeding device for aquatic feed production and packaging machine. By adopting a crank-slider reciprocating striking structure and staggering the striking sequence to avoid resonance and compaction of feed in the hopper, the device uses low-frequency, gentle tapping to shake off high-oil-content, sticky feed from shrimp and crabs. This eliminates blockages caused by accumulated material on the inner wall narrowing the channel from the source, significantly reducing the amount of manual scraping and maintenance work, thus solving the problems mentioned in the background art.

[0006] To achieve the above objectives, this invention provides the following technical solution.

[0007] A clog-proof feeding device for an aquatic feed production and packaging machine includes: a main structure, the main structure including a bin body and a bin cover, the bin cover being fastened to the top of the bin body by a snap fastener, a feeding port being provided on one side of the bin cover, a perimeter being provided on the outer wall of the bin body, a support foot being provided around the bottom of the perimeter, and a feeding channel being provided at the lower end of the bin body.

[0008] An anti-blocking mechanism for preventing material discharge blockage is installed on both sides of the outer wall of the bin. The anti-blocking mechanism includes a support plate, a first motor, a reciprocating plate, and a vibrating block. The support plate is designed in a Z-shape and is symmetrically welded to the perimeter. The first motor is installed on the support plate. The vibrating block is located on the outer wall of the reciprocating plate near the bin. The first motor drives the vibrating block to periodically reciprocate and strike the outer wall of the bin.

[0009] Preferably, the anti-blocking mechanism further includes a turntable and a connecting rod. The turntable is rotatably mounted on the top of the support plate. The turntable is driven to rotate by a first motor. A convex shaft is provided on the turntable. One end of the connecting rod is rotatably connected to the convex shaft. A convex seat is provided on the outer wall of the reciprocating plate. The other end of the connecting rod is rotatably connected to the convex seat.

[0010] Preferably, the outer walls of the chamber are symmetrically provided with side plates on both sides, and guide grooves are provided on the side plates. Guide blocks are provided at both ends of the reciprocating plate, and the guide blocks and guide grooves are slidably engaged.

[0011] Preferably, the lower part of the silo body is tapered, and a discharge pipe is provided on one side of the lower end of the discharge channel. A discharge valve is installed at the discharge end of the discharge pipe, and the discharge valve is a pneumatic gate valve.

[0012] Preferably, a spiral conveyor is rotatably installed in the feeding channel, and a second motor is installed at the lower end of the feeding channel to drive the spiral conveyor to rotate and feed material into the feeding tube.

[0013] Preferably, it also includes an arch-breaking mechanism for breaking up bridging and arching structures formed by the feed in the hopper, which is disposed on the hopper cover.

[0014] The arch-breaking mechanism includes a shaft and rake teeth. The shaft is rotatably installed at the bottom of the bin cover and extends into the inner cavity of the bin. The rake teeth are arranged in three layers at equal intervals on the shaft. A third motor is installed at the top of the bin cover to drive the shaft to rotate.

[0015] Preferably, the three layers of rake teeth correspond to the upper, middle and lower parts of the inner cavity of the bin, respectively. Each layer of rake teeth has 6 teeth arranged radially. The ends of the rake teeth maintain a 10mm gap with the inner wall of the bin. The cross-section of the rake teeth is V-shaped, and a cutting edge is provided on the side facing the clockwise rotation direction, which is convenient for cutting and breaking up clumps of feed.

[0016] Preferably, the rake teeth have an adjustable elevation angle with the horizontal plane, with an adjustment range of [-15°, 5°]. When rotated clockwise, they generate a downward thrust, pushing the feed into the feed channel.

[0017] Preferably, the single-sided vibration block of the bin body has a single-beat duration of 0.5s, an interval of 2s between two adjacent beats, and the anti-blocking mechanisms on the left and right sides of the bin body operate alternately. The complete beat cycle on one side is 2.5s, and the overall alternating beat frequency of the whole machine is 20 times / minute, thereby achieving low-frequency light tapping to avoid bin body resonance and compaction of feed.

[0018] Compared with the prior art, the beneficial effects of this invention patent are: 1. This invention patent adopts a crank slider reciprocating striking structure, and the left and right staggered striking sequence avoids the resonance of the bin body to compact the feed. The low-frequency light tapping shakes off the high oil and sticky feed of shrimp and crab, eliminating the blockage caused by the accumulation of material on the inner wall and narrowing of the channel from the source, and greatly reducing the amount of manual scraping and maintenance work.

[0019] 2. Through the three-layer radial rake teeth of the upper, middle and lower regions, the rake teeth break up the clumps and continuously destroy the arched support structure of the feed, eliminating the problems of bridging that cause weight fluctuations and an increase in defective bags, and significantly improving the continuous operation capability of the production line. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the present invention.

[0021] Figure 2 This is a schematic diagram of the structure of the container body of this invention.

[0022] Figure 3 This is a schematic diagram of the material feeding channel of this invention.

[0023] Figure 4 This is a schematic diagram of the structure of the compartment cover of this invention.

[0024] Figure 5 This is a schematic diagram of the structure of the protective cover of this invention.

[0025] In the diagram: 1. Bin body; 2. Bin cover; 3. Feed inlet; 4. Surrounding edge; 5. Support plate; 6. First motor; 7. Turntable; 8. Connecting rod; 9. Reciprocating plate; 10. Vibrating block; 11. Side plate; 12. Guide groove; 13. Guide block; 14. Discharge channel; 15. Discharge pipe; 16. Second motor; 17. Screw conveyor rod; 18. Third motor; 19. Shaft; 20. Rake teeth; 21. Protective cover. Detailed Implementation

[0026] The technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0027] Please see Figure 1-5 This invention patent provides a technical solution: an anti-blocking feeding device for an aquatic feed production and packaging machine, comprising: a main structure, the main structure including a bin body 1 and a bin cover 2, the bin cover 2 being fastened to the top of the bin body 1 by a snap fastener, a feeding port 3 being provided on one side of the bin cover 2, a perimeter 4 being provided on the outer wall of the bin body 1, a support foot with mounting holes being provided around the bottom of the perimeter 4, and a feeding channel 14 being provided at the lower end of the bin body 1.

[0028] The silo body 1 is made of 304 stainless steel sheet rolled and welded, with the inner wall polished to reduce the adhesion of high-oil shrimp and crab feed. The silo cover 2 adopts a quick-release buckle structure, which does not require bolt disassembly and is easy to open to clean the internal clumps of feed and inspect the internal arch-breaking mechanism. The integrated outer rim 4 of the silo body 1 enhances the overall structural rigidity, and the surrounding support legs evenly distribute the load of the whole machine and feed, ensuring stable placement without tilting. The lower part of the silo body 1 narrows into a conical structure to reduce the dead corners of material accumulation and guide the feed to naturally converge downwards to the feeding channel 14, reducing the probability of bridging and sticking from the foundation. The feed inlet 3 is connected to the upstream cooling and screening equipment to realize continuous feed feeding and temporary storage.

[0029] The system includes four legs, evenly distributed in a ring at the four corners of the bottom edge. The entire support is made of Φ40mm round steel pipe, with an 80mm diameter circular anti-slip pad welded to the bottom. Three sets of mounting holes are provided, evenly distributed on the circular anti-slip pad, with a diameter of 15mm. The top of the legs is rigidly fixed to the bottom edge of the perimeter by full welding, and triangular reinforcing ribs are added at the weld to enhance the support strength. The lower end is fixed to the working area with bolts.

[0030] Please see Figure 1-5 The anti-blocking mechanism is used to prevent material discharge blockage. It is set on both sides of the outer wall of the bin body 1. The anti-blocking mechanism includes a support plate 5, a first motor 6, a reciprocating plate 9 and a vibrating block 10. The support plate 5 is designed in a Z shape and is symmetrically welded to the surrounding edge 4. The first motor 6 is installed on the support plate 5. The vibrating block 10 is located on the outer wall of the reciprocating plate 9 near the bin body 1. The first motor 6 drives the vibrating block 10 to periodically reciprocate and strike the outer wall of the bin body 1.

[0031] Specifically, the anti-blocking mechanism also includes a turntable 7 and a connecting rod 8. The turntable 7 is rotatably mounted on the top of the support plate 5. The turntable 7 is driven to rotate by the first motor 6. A convex shaft is provided on the turntable 7. One end of the connecting rod 8 is rotatably connected to the convex shaft. A boss is provided on the outer wall of the reciprocating plate 9. The other end of the connecting rod 8 is rotatably connected to the boss. Side plates 11 are symmetrically provided on both sides of the outer wall of the chamber 1. Guide grooves 12 are provided on the side plates 11. Guide blocks 13 are provided at both ends of the reciprocating plate 9. The guide blocks 13 and the guide grooves 12 are slidably engaged.

[0032] The bin 1 has two independently arranged knocking mechanisms on both sides, with staggered knocking sequences to avoid synchronous resonance and compaction of feed, which would exacerbate bridging. The first motor 6 is a low-speed eccentric drive motor, which, together with the turntable 7 and crank connecting rod 8, forms a crank-slider transmission structure, converting the circular motion of the turntable 7 into the horizontal linear reciprocating motion of the reciprocating plate 9. The long guide groove 12 of the side plate 11 is precisely matched with the guide blocks 13 at both ends, limiting the reciprocating plate 9 to only horizontal translation, without vertical or horizontal offset, ensuring that the vibrating block 10 strikes the bin wall vertically. The vibrating block 10 is made of hard rubber, and the contact surface between the vibrating block 10 and the outer wall of the bin 1 is set into a corresponding arc shape, so that there is no metallic noise when it hits the bin wall, while buffering the impact and preventing deformation or denting of the stainless steel bin 1. The knocking frequency is controlled at 15-25 times / minute. The low-frequency light knocking only shakes off the adhering feed and will not compact the internal particles to form new arches.

[0033] In use, the first motor 6 drives the turntable 7 to rotate at a constant speed. The convex shaft on the turntable 7 pulls the connecting rod 8 to perform a reciprocating push-pull action as it moves in a circular motion. The connecting rod 8 drives the reciprocating plate 9 to slide horizontally along the guide groove 12 of the side plate 11. The vibrating block 10 on the inner side of the reciprocating plate 9 periodically impacts the outer wall of the bin 1. The vibration is transmitted to the interior through the stainless steel bin wall, shaking off the oil and sticky shrimp and crab clumps that are stuck to the inner wall of the bin. The detached feed is carried downward with the main flow into the feeding channel 14. The left and right sets of mechanisms strike alternately, so the bin 1 will not produce overall resonance, preventing the material from being repeatedly squeezed to form new arched bridges.

[0034] It can specifically solve the problems of shrimp and crab feed being high in oil and highly viscous, easily sticking to the bin walls, and long-term accumulation narrowing the feed channel 14 until it is blocked; the crank-slider reciprocating striking structure operates smoothly and the striking force is uniform; the guide groove 12 limits the striking point to ensure that the striking point is fixed and there is no deviation or missed striking; the rubber vibration block 10 protects the bin body 1 plate, extends the service life of the equipment, and greatly reduces the frequency of manual scraping of the bin walls.

[0035] The first motor is a TZF-04 small bin wall vibration and impact motor, powered by AC220V / 50Hz, with a rated power of 40W, an excitation force of 50kg, a rated speed of 1450r / min, an IP65 protection rating, F-class insulation, and continuous working system S1. The output eccentric torque is adapted to the crank turntable reciprocating drive, matching the low-frequency light tapping condition of 15-25 times / minute, which will not compact the feed and form new bridges.

[0036] Each anti-blocking mechanism is equipped with a detachable arc-shaped metal protective cover 21 on its outer side. The protective cover 21 is snapped onto the outside of the Z-shaped support plate 5 through a snap-fit ​​structure, completely covering all moving parts of the first motor 6, turntable 7, connecting rod 8, reciprocating plate 9, and vibrating block 10. Ventilation and heat dissipation louvers can be opened on the side of the protective cover 21, which can not only prevent feed dust and splashing particles from entering the transmission structure, but also isolate personnel from accidentally touching the moving parts and eliminate the safety hazard of mechanical pinching injury.

[0037] Furthermore, the vibration block on one side of the bin has a single strike duration of 0.5s, with a 2s interval between two adjacent strikes. The anti-blocking mechanisms on the left and right sides of the bin operate alternately, with a complete strike cycle of 2.5s on one side. The overall alternating strike frequency of the whole machine is 20 times / minute, thereby achieving low-frequency light tapping to avoid bin resonance and compaction of feed.

[0038] For a preferred embodiment, please refer to Figure 1-3 The lower part of the silo body 1 is tapered, and a feeding pipe 15 is provided on one side of the lower end of the feeding channel 14. A screw conveyor 17 is rotatably installed inside the feeding channel 14, and a second motor 16 is installed at the lower end of the feeding channel 14 to drive the screw conveyor 17 to rotate and feed material into the feeding pipe 15. A feeding valve is installed at the discharge end of the feeding pipe 15, and the feeding valve is a pneumatic gate valve.

[0039] The conical bottom of the hopper 1 collects all the feed, eliminating dead corners for accumulation. The screw conveyor 17 features a wide-pitch design with a gap between the blades and the inner wall of the channel to prevent crushing of whole fish, shrimp, and crab pellets. The second motor 16 can be equipped with a frequency converter module, which can adjust the screw conveyor speed according to the packaging speed to precisely control the feed flow. The pneumatic gate valve has a fast response speed and, in conjunction with the PLC control unit of the whole machine, can start and stop in stages and feed intermittently according to the weight set for each bag of feed, and close the valve immediately when the weight reaches the standard. The continuous pushing of the screw can clear the blockage of clumps and fragments in the feed channel 14, preventing the bottom of the channel from becoming blocked and cutting off the feed.

[0040] During use, after the feed in the bin falls into the lower feeding channel 14, the second motor 16 drives the screw conveyor 17 to rotate at a constant speed, and the screw blades continuously push the feed laterally into the feeding pipe 15; the screw continuously guides the clumps and fragments stuck in the channel to prevent the bottom channel from being blocked; when the packaging weight reaches the set value, the control unit outputs a signal to close the pneumatic feeding valve, cut off the material supply, and complete the quantitative packaging of a single bag; the screw speed can be synchronously matched with the production rhythm of the packaging machine to ensure a stable feeding flow.

[0041] The screw conveyor 17 ensures continuous material delivery, significantly reducing production line downtime caused by pipe blockage. It also solves the problem of material blockage at the bottom of the feeding channel 14 due to granules and clumps, while achieving quantitative feed delivery. The variable frequency screw is compatible with different packaging bag sizes, and the pneumatic valve precisely cuts off the material, reducing weighing errors, lowering the yield of defective bags, and simultaneously assisting in continuous unblocking and anti-clogging of the bottom channel.

[0042] The second motor is a YN80 single-phase geared motor, powered by AC220V, with a rated power of 25W, a reduction ratio of 1:120, a rated output speed of 12r / min, an output torque of 18N・m, IP44 protection, built-in overload stall protection, and frequency conversion adjustable to match different feeding speeds of the packaging machine.

[0043] The supporting PLC control unit is the Xinje XD3-32R-E small industrial PLC, with detailed parameters: AC220V 50Hz power supply, 32 I / O points (14 DC24V inputs and 18 relay outputs), basic instruction operation speed of 0.02μs, built-in 12K-step program memory, equipped with 2 RS485 communication interfaces, supports Modbus RTU protocol, and can be connected to a 7-inch Kunlun Tongtai TPC7062K touch screen for human-machine interaction.

[0044] For a preferred embodiment, please refer to Figure 1-4 It also includes an arch-breaking mechanism for breaking up bridging and arching structures formed by feed within the hopper, which is installed on the hopper cover 2. The arch-breaking mechanism includes a shaft 19 and rake teeth 20. The shaft 19 is rotatably mounted on the bottom of the hopper cover 2 and extends into the inner cavity of the hopper body 1. The rake teeth 20 are arranged in three layers at equal intervals on the shaft 19. A third motor 18 is installed on the top of the hopper cover 2 to drive the shaft 19 to rotate. The three layers of rake teeth 20 correspond to the upper, middle, and lower parts of the inner cavity of the hopper body 1, respectively. Each layer of rake teeth 20 has 6 rake teeth arranged radially. The ends of the rake teeth 20 maintain a 10mm gap with the inner wall of the hopper body 1. The cross-section of the rake teeth 20 is V-shaped, with a cutting edge on the side facing the clockwise rotation direction, which facilitates cutting and breaking up clumps of feed.

[0045] The three-layer rake teeth 20 cover the upper, middle and lower three areas of the bin that are prone to bridging. The upper layer disperses the piled and compacted material, the middle layer cuts the arched bridging support frame, and the bottom layer scrapes away the clumps stuck at the bottom of the cone. The V-shaped / wedge-shaped cutting edge of the rake teeth 20 only targets clumps and sticky lumps, and will not cut the whole feed particles. The end leaves a gap with the bin wall to avoid the rake teeth 20 scratching the polished bin wall and causing scratches, and to prevent the feed from sticking more easily. Each layer of 3-6 radial rake teeth 20 fully covers the cross-section of the bin, without disturbing dead corners. The third motor 18 drives the shaft 19 at low speed, with the speed controlled at 8-12 r / min. The low speed reduces the loss of particles due to breakage.

[0046] During use, the third motor 18 drives the central shaft 19 to rotate at a uniform speed, and the three layers of radial rake teeth 20 move synchronously in a circular motion; the upper rake teeth 20 break up the newly fed and compacted feed layer to prevent the continuous heavy pressure of the upper material from aggravating the bridging in the middle; the middle layer of bladed wedge-shaped rake teeth 20 continuously penetrates and cuts the arched support structure of the feed, directly destroying the stable bridging and eliminating the phenomenon of hollow material breakage; the bottom rake teeth 20 stirs up the dead corner of the cone bottom to prevent the accumulation at the bottom from blocking the feeding channel 14.

[0047] It can solve the core defects of aquatic feed such as light weight, high friction leading to arched bridging, and hollow material breakage during feeding; the three-layer full-area layered disturbance has no dead angles, efficiently breaks up clumps, and the low-speed operation protects the intact feed particles to the greatest extent, reduces powder waste, greatly reduces the frequency of manual stoppage to purge material, and ensures continuous production of the packaging machine.

[0048] The third motor is a 4RK25GN-C vertical mixing geared motor, powered by AC220V, with a rated power of 25W, a reduction ratio of 1:150, an unloaded output speed of 10r / min, an output torque of 22N・m, and IP54 protection. It is installed with a vertical flange to fit the top of the bin cover, and its low speed and high torque meet the requirements of layered arch breaking mixing.

[0049] The rake teeth are made of 304 food-grade stainless steel through one-piece stamping, with a polished surface free of burrs. They are resistant to grease corrosion, resistant to clumping and impact, and do not easily scratch aquatic feed pellets.

[0050] For a preferred embodiment, please refer to Figure 1-4 The rake teeth 20 have an adjustable elevation angle with the horizontal plane, with an adjustment range of [-15°, 5°]. When rotated clockwise, they generate a downward thrust, pushing the feed into the feed channel 14.

[0051] All three-layer rake teeth 20 are uniformly tilted upward at an angle of [-15°, 5°]. When rotating, the inclined surface generates a downward force on the feed, which counteracts the tendency of the particles to float and stagnate. The angle is moderate, so the feed will not be flipped upward and cause dust or material splashing. The layered rake teeth 20 work together to form a continuous downward material pushing flow from top to bottom, which accelerates the feed to gather in the bottom feeding channel 14.

[0052] It can help accelerate the downward flow of materials in the warehouse, reduce static material retention, and reduce the conditions for bridging and material sticking; together with the knocking mechanism and screw conveyor, it forms a complete material flow system from top to bottom, further improving the continuity of material feeding.

[0053] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A clog-prevention feeding device for an aquatic feed production and packaging machine, characterized in that, include: The main structure includes a hopper body (1) and a hopper cover (2); the hopper cover (2) is attached to the top of the hopper body (1) by a snap fastener, a feed inlet (3) is provided on one side of the hopper cover (2), a perimeter (4) is provided on the outer wall of the hopper body (1), a support foot with mounting holes is provided around the bottom of the perimeter (4), and a discharge channel (14) is provided at the lower end of the hopper body (1). An anti-blocking mechanism for preventing material discharge blockage is provided on both sides of the outer wall of the silo body (1). The anti-blocking mechanism includes a support plate (5), a first motor (6), a reciprocating plate (9), and a vibrating block (10). The support plate (5) is designed in a Z-shape and symmetrically welded to the perimeter (4). The first motor (6) is installed on the support plate (5). The vibrating block (10) is located on the outer wall of the reciprocating plate (9) near the silo body (1). The first motor (6) drives the vibrating block (10) to periodically reciprocate and strike the outer wall of the silo body (1).

2. The anti-blocking feeding device for an aquatic feed production and packaging machine according to claim 1, characterized in that: The anti-blocking mechanism also includes a turntable (7) and a connecting rod (8). The turntable (7) is rotatably mounted on the top of the support plate (5). The turntable (7) is driven to rotate by the first motor (6). A convex shaft is provided on the turntable (7). One end of the connecting rod (8) is rotatably connected to the convex shaft. A convex seat is provided on the outer wall of the reciprocating plate (9). The other end of the connecting rod (8) is rotatably connected to the convex seat.

3. The anti-blocking feeding device for an aquatic feed production and packaging machine according to claim 1, characterized in that: The outer walls of the chamber (1) are symmetrically provided with side plates (11), and guide grooves (12) are provided on the side plates (11). Guide blocks (13) are provided at both ends of the reciprocating plate (9), and the guide blocks (13) and guide grooves (12) are slidably engaged.

4. The anti-blocking feeding device for an aquatic feed production and packaging machine according to claim 1, characterized in that: The lower part of the silo body (1) is tapered, and a discharge pipe (15) is provided on one side of the lower end of the discharge channel (14). A discharge valve is installed at the discharge end of the discharge pipe (15), and the discharge valve is a pneumatic gate valve.

5. The anti-blocking feeding device for an aquatic feed production and packaging machine according to claim 4, characterized in that: A screw conveyor rod (17) is rotatably installed inside the feeding channel (14), and a second motor (16) is installed at the lower end of the feeding channel (14) to drive the screw conveyor rod (17) to rotate and feed material into the feeding pipe (15).

6. The anti-blocking feeding device for an aquatic feed production and packaging machine according to claim 1, characterized in that: It also includes an arch-breaking mechanism for breaking up bridging and arching structures formed by feed in the hopper, which is installed on the hopper cover (2); The arch-breaking mechanism includes a shaft (19) and rake teeth (20) made of 304 stainless steel. The shaft (19) is rotatably installed at the bottom of the bin cover (2) and extends into the inner cavity of the bin body (1). The rake teeth (20) are arranged in three layers at equal intervals on the shaft (19). A third motor (18) is installed on the top of the bin cover (2) to drive the shaft (19) to rotate.

7. The anti-blocking feeding device for an aquatic feed production and packaging machine according to claim 6, characterized in that: The three layers of rake teeth (20) correspond to the upper, middle and lower parts of the inner cavity of the bin body (1) respectively. Each layer of rake teeth (20) has 6 radially distributed teeth. The ends of the rake teeth (20) maintain a 10mm gap with the inner wall of the bin body (1). The cross section of the rake teeth (20) is V-shaped, and a cutting edge is provided on the side facing the clockwise rotation direction.

8. The anti-blocking feeding device for an aquatic feed production and packaging machine according to claim 6, characterized in that: The rake teeth (20) have an adjustable elevation angle with the horizontal plane, with an adjustment range of [-15°, 5°]. When rotated clockwise, they generate a downward thrust, pushing the feed into the feed channel (14).

9. The anti-blocking feeding device for an aquatic feed production and packaging machine according to claim 1, characterized in that: The vibration block (10) on one side of the chamber (1) has a single-hit duration of 0.5s, and the interval between two adjacent hits is 2s. The anti-blocking mechanisms on the left and right sides of the chamber (1) operate alternately, and the single-side complete hit is 2.5s. The overall alternating hit frequency of the whole machine is 20 times / minute.

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