Automatic feeding device for breeding pigs

Abstract

The invention discloses an automatic feeding device for breeding pigs, and relates to the technical field of stirring and feeding. The device comprises a base and a stirring barrel arranged on the base, a stirring assembly and a dust suppression assembly are installed in the stirring barrel, the dust suppression assembly is installed over the stirring assembly, and the stirring assembly and the dust suppression assembly are driven by the same motor to operate; the stirring assembly comprises a fixed fluted disc, the fixed fluted disc is fixedly mounted on the inner bottom wall of the stirring barrel, a movable disc is rotatably arranged in the center of the top of the fixed fluted disc, three connecting rods are mounted on the outer side face of the movable disc in an array manner, and a driving gear is mounted at the other end of each connecting rod; the driving gear is formed by connecting an upper gear and a lower gear which are the same in size and specification through a middle shaft. According to the invention, two stirring modes are carried out at the same time, so that the stirring effect is better, and the two stirring modes only use one driving motor, so that the stirring energy consumption is reduced, and the stirring cost is saved.

Description

Technical Field

[0001] This invention belongs to the field of mixing and feeding technology, and in particular relates to an automatic feeding device for pig farming. Background Technology

[0002] Pig farming is an agricultural production activity, mainly for raising pigs for consumption. In the process of feeding pigs, it is necessary to formulate feed according to the different growth stages of the pigs, and feed the pigs with the formulated feed to ensure that the pigs have sufficient nutrients for growth at different stages.

[0003] Currently, pig farming requires pre-mixing and proportioning feed before pouring it into the pig trough. Patent number "CN115364730 A" describes a pig feed mixing device where a manually rotating adjusting screw causes a limiting seat to slide along the inner end face of the housing. The limiting seat moves a rack plate, which in turn rotates a connecting seat via a sector gear, thus adjusting the angle of the rotating shaft and changing the mixing range. When the rack plate meshes with the sector gear, the spring contracts, causing the rack plate to vibrate reciprocally, which in turn causes the rotating shaft to vibrate continuously, increasing the mixing effect. While this patent improves feed mixing, the feed generates dust during the mixing process, which can disperse into the air and negatively impact the health of workers. Furthermore, the mixing range of the stirring rod is limited.

[0004] Existing automatic feeding devices for pig farming cannot effectively suppress dust dispersion when mixing feed added to the mixing tank. At the same time, mixing in one direction may cause feed to clump. Therefore, this invention proposes an automatic feeding device for pig farming. Summary of the Invention

[0005] The purpose of this invention is to provide an automatic feeding device for pig farming, which solves the problems of existing automatic feeding devices for pig farming, such as the inability to effectively suppress dust dispersion when mixing feed added to the mixing tank, and the possibility of feed clumping caused by the mixing rod stirring in one direction.

[0006] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution: The present invention is an automatic feeding device for pig farming, including a base and a mixing tank set on the base. The mixing tank is equipped with a mixing component and a dust suppression component. The dust suppression component is installed directly above the mixing component, and the mixing component and the dust suppression component are driven by the same motor. The stirring assembly includes a fixed toothed disc, which is fixedly installed on the bottom wall inside the stirring tank. A movable disc is rotatably mounted at the top center of the fixed toothed disc. Three connecting rods are arrayed on the outer side of the movable disc. A drive gear is mounted at the other end of each connecting rod. The drive gear consists of two gears of the same size connected by a central shaft. The bottom gear of the drive gear meshes with the tooth groove on the outer side of the fixed toothed disc. The central shaft of the drive gear passes through the connecting rod. The top gear of the drive gear meshes with a transmission gear on one side. The bottom of the transmission gear is mounted on the top of the connecting rod. A fixed gear is meshed with the other side of the transmission gear opposite to the drive gear. The bottom of the fixed gear is mounted on the top of the connecting rod. The top of the transmission gear is fixedly connected to one end of a connecting arm. A stirring shaft is mounted at the other end of the connecting arm. The stirring shaft passes through the connecting arm to its bottom and is fixedly connected to the movable gear. During its rotation around the transmission gear, the movable gear meshes with both the drive gear and the fixed gear. Preferably, a side plate is installed on each of the top two sides of the base, the mixing tank is located between the two side plates, and the opposite sides of the mixing tank are movably connected to the inner side of the side plate by two connecting shafts. One of the connecting shafts passes through one of the side plates to its outside and is fixedly connected to one end of an extension shaft. The outer side of the extension shaft is fixedly connected to a movable part, and the bottom of the movable part is fixedly connected to the output end of a telescopic cylinder. The telescopic cylinder is welded to the upper surface of the base. A limiting frame is installed on the top of the mixing tank, and the limiting frame is cross-shaped.

[0007] Preferably, the motor is fixedly connected to the center of the bottom of the mixing tank, and the top output end of the motor passes through the bottom of the mixing tank to its interior, and passes through the bottom of the fixed gear plate to its top and is fixedly connected to the bottom of the movable plate. The motor drives the movable plate to rotate, which in turn drives the drive gear to mesh and rotate around the outer side of the fixed gear plate.

[0008] Preferably, the stirring assembly further includes stirring blades, and there are three stirring blades, each of which is respectively installed on the outer side of three stirring shafts.

[0009] Preferably, the upper and lower gears of the drive gear, as well as the transmission gear, fixed gear, and movable gear, are all the same size and specifications. The drive gear, transmission gear, and fixed gear are all mounted on the connecting rod and arranged sequentially outward from the connecting rod.

[0010] Preferably, the dust suppression component includes a drive shaft, which is fixedly mounted on the top of the movable disc via a bottom flange. The drive shaft has a hollow internal structure, and a wave groove is formed on the outer surface of the drive shaft. The wave groove is a closed groove with its ends connected. A transmission block is movably mounted inside the wave groove. The outer side of the transmission block is fixedly connected to the inner side of the mounting ring, and the mounting ring is movably sleeved on the outer side of the drive shaft.

[0011] Preferably, connecting pieces are fixedly connected to the top two sides of the mounting ring, and an electrostatic adsorption roller is provided between the two connecting pieces. The tops of the two connecting pieces are fixedly connected to the bottom of the limiting post, and the cross-section of the limiting post is rectangular. A rectangular hole is opened at the center of the "cross" shape of the limiting frame, and the limiting post is movably disposed inside the rectangular hole.

[0012] Preferably, the inner wall of the drive shaft is covered with a layer of silk, and the electrostatic adsorption roller is movably disposed in the cavity inside the drive shaft and rubs against the silk layer. The outer wall of the electrostatic adsorption roller rubs against the silk layer to generate static electricity. When the electrostatic adsorption roller moves to the outside of the drive shaft, it adsorbs feed dust by electrostatic adsorption.

[0013] Preferably, the height of the stirring shaft does not exceed two-thirds of the height of the stirring tank, and the amount of feed added during feeding does not exceed the height of the drive shaft.

[0014] The present invention has the following beneficial effects: 1. This invention features a stirring assembly where the toothed grooves on the outside of a fixed toothed disc mesh with the gear at the bottom of a drive gear. A movable disc is connected to three connecting rods on its outer side. The drive gear rotates around the movable disc and meshes with the toothed grooves on the outside of the fixed toothed disc, thus simultaneously rotating and driving the transmission gear meshing with it. Due to the fixed connecting arm at the top of the transmission gear, when the transmission gear rotates, the stirring shaft and stirring blades at the other end of the connecting arm rotate around the transmission gear, thereby stirring and mixing the feed inside the mixing tank. When the movable gear at the bottom of the other end of the connecting arm rotates around the transmission gear, it moves to the drive gear and the fixed toothed disc... When the gear is in position, it meshes with both the drive gear and the fixed gear, causing them to rotate. This, in turn, drives the movable gear to rotate, ultimately causing the stirring shaft and stirring blades at the top of the movable gear to rotate. This allows the stirring blades to more thoroughly mix the feed. This mixing method allows the stirring blades to have a larger mixing range as they move in a circular motion around the movable gear. Simultaneously, the movable gear's intermittent meshing with the drive gear and the fixed gear drives the stirring blades to rotate and mix. The two mixing methods occur simultaneously, resulting in better mixing effects. Furthermore, both mixing methods only require one drive motor, reducing mixing energy consumption and saving mixing costs.

[0015] 2. This invention, by setting up a dust suppression component, ensures that when the drive shaft is positioned on the upper surface of the movable disc, the drive shaft rotates along with the movable disc. Since the limiting post is limited by the limiting frame, the rotation of the drive shaft drives the transmission block inside the wave groove to move within the wave groove. This causes the mounting ring connected to the transmission block to move up and down on the surface of the drive shaft, thereby driving the electrostatic adsorption roller to continuously move up and down within the inner cavity of the drive shaft. As the drive shaft rotates continuously and the electrostatic adsorption roller moves up and down, the electrostatic adsorption roller rubs against the rotating silk layer, causing the electrostatic adsorption roller to become electrostatically charged. When the electrostatic adsorption roller is located outside the drive shaft, the electrostatically charged electrostatic adsorption roller adsorbs dust, preventing dust from overflowing from the mixing tank. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of the automatic feeding device for pig farming proposed in this invention; Figure 2 This is a schematic diagram of the internal structure of the mixing tank of the automatic feeding device for pig farming proposed in this invention; Figure 3 This is a schematic diagram of the dust suppression component structure of the automatic feeding device for pig farming proposed in this invention; Figure 4 This is a schematic cross-sectional view of the dust suppression component of the automatic feeding device for pig farming proposed in this invention; Figure 5 For the present invention Figure 4 Enlarged view of point A in the middle; Figure 6 This is a schematic diagram of the mixing component structure of the automatic feeding device for pig farming proposed in this invention.

[0018] Figure 7 For the present invention Figure 6 Enlarged view of section B in the middle.

[0019] The attached diagram lists the components represented by each number as follows: 1. Base; 2. Side plate; 3. Telescopic cylinder; 4. Moving part; 5. Extension shaft; 6. Connecting shaft; 7. Mixing tank; 8. Limiting frame; 9. Motor; 10. Fixed gear plate; 11. Moving plate; 12. Connecting rod; 13. Drive gear; 14. Transmission gear; 15. Fixed gear; 16. Moving gear; 17. Connecting arm; 18. Mixing shaft; 19. Mixing blade; 20. Transmission shaft; 21. Transmission block; 22. Mounting ring; 23. Connecting piece; 24. Silk layer; 25. Electrostatic adsorption roller; 26. Limiting post. Detailed Implementation

[0020] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0021] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and for 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. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0023] See Figure 1-7 The present invention is an automatic feeding device for pig farming, including a base 1 and a mixing tank 7 set on the base 1. The mixing tank 7 is equipped with a mixing component and a dust suppression component. The dust suppression component is installed directly above the mixing component, and the mixing component and the dust suppression component are driven by the same motor 9. The base 1 serves as the base of the feeding device and plays a supporting and stable role. The side plate 2 is used to fix the mixing tank 7. The mixing tank 7 is used to feed and mix different types of feed. The motor 9 is used to drive the mixing component and the dust suppression component to run. The mixing assembly includes a fixed toothed disc 10, which is fixedly installed on the bottom wall inside the mixing tank 7. A movable disc 11 is rotatably mounted at the top center of the fixed toothed disc 10. Three connecting rods 12 are arrayed on the outer side of the movable disc 11. Each connecting rod 12 has a drive gear 13 mounted at its other end. The drive gear 13 consists of two identical gears connected by a central shaft. The bottom gear of the drive gear 13 meshes with the tooth groove on the outer side of the fixed toothed disc 10. The central shaft of the drive gear 13 passes through the connecting rods 12. The gear on the top of wheel 13 meshes with a transmission gear 14 on one side. The bottom of the transmission gear 14 is mounted on the top of the connecting rod 12. A fixed gear 15 meshes with the other side of the transmission gear 14 opposite to the drive gear 13. The bottom of the fixed gear 15 is mounted on the top of the connecting rod 12. The top of the transmission gear 14 is fixedly connected to one end of the connecting arm 17. A stirring shaft 18 is mounted on the other end of the connecting arm 17. The stirring shaft 18 passes through the connecting arm 17 to its bottom and is fixedly connected to a movable gear 16. The movable gear 16 rotates around the transmission gear 14 as its center. During the process, it meshes with the drive gear 13 and the fixed gear 15 respectively. The tooth groove on the outside of the fixed gear disk 10 is used to mesh with the gear at the bottom of the drive gear 13. The movable disk 11 is used to connect the three connecting rods 12 on its outer side. The drive gear 13 rotates around the movable disk 11 and meshes with the tooth groove on the outside of the fixed gear disk 10, thereby rotating itself and driving the transmission gear 14 that meshes with it to rotate. Since the connecting arm 17 is fixed on the top of the transmission gear 14, when the transmission gear 14 rotates, the stirring shaft 18 at the other end of the connecting arm 17... The stirring blade 19 rotates around the transmission gear 14 to stir and mix the feed inside the stirring tank 7. When the movable gear 16 at the bottom of the other end of the connecting arm 17 rotates around the transmission gear 14, it will mesh with the drive gear 13 and the fixed gear 15 when it moves to their positions. The drive gear 13 and the fixed gear 15 will rotate, which will drive the movable gear 16 to rotate. Finally, the stirring shaft 18 and the stirring blade 19 at the top of the movable gear 16 will rotate, so that the stirring blade can stir the feed more thoroughly. The base 1 has a side plate 2 installed on each of its two top sides. The mixing tank 7 is located between the two side plates 2, and the two sides of the mixing tank 7 are movably connected to the inner side of the side plate 2 by two connecting shafts 6. One of the connecting shafts 6 passes through one of the side plates 2 to its outside and is fixedly connected to one end of the extension shaft 5. The outer side of the extension shaft 5 is fixedly connected to the movable part 4. The bottom of the movable part 4 is fixedly connected to the output end of the telescopic cylinder 3. The telescopic cylinder 3 is welded to the upper surface of the base 1. A limit frame 8 is installed on the top of the mixing tank 7. The limit frame 8 is cross-shaped. The connecting shaft 6 is used to connect and fix the mixing tank 7. The extension shaft 5 extends out and connects to the movable part 4. The movable part 4 drives the mixing tank 7 to rotate under the drive of the telescopic cylinder 3. The maximum rotation angle of the mixing tank 7 does not exceed 90°. The telescopic cylinder 3 is used to drive the mixing tank 7 to rotate around the connecting shaft 6, thereby automatically pouring out the feed to feed the pigs. The limit frame 8 plays a role in limiting the limit post 26 and preventing the electrostatic adsorption roller 25 at the bottom of the limit post 26 from rotating.

[0024] The motor 9 is fixedly connected to the bottom center of the mixing tank 7. The top output end of the motor 9 passes through the bottom of the mixing tank 7 to its interior, and passes through the bottom of the fixed toothed disc 10 to its top and is fixedly connected to the bottom of the movable disc 11. The motor 9 drives the movable disc 11 to rotate, which in turn drives the drive gear 13 to mesh and rotate around the outer side of the fixed toothed disc 10.

[0025] The stirring assembly also includes stirring blades 19, of which there are three stirring blades 19, each of which is installed on the outer side of one of the three stirring shafts 18.

[0026] Among them, the upper and lower gears of the drive gear 13, as well as the transmission gear 14, fixed gear 15 and movable gear 16 are all the same size and specifications. The drive gear 13, transmission gear 14 and fixed gear 15 are all mounted on the connecting rod 12 and are arranged outward in sequence.

[0027] The dust suppression component includes a drive shaft 20, which is fixedly installed on the top of the movable disc 11 via a bottom flange. The drive shaft 20 has a hollow interior and a corrugated groove is formed on its outer surface. The corrugated groove is a closed groove with its ends connected. A drive block 21 is movably installed inside the corrugated groove. The outer side of the drive block 21 is fixedly connected to the inner side of the mounting ring 22, and the mounting ring 22 is movably sleeved on the outer side of the drive shaft 20.

[0028] Among them, the top two sides of the mounting ring 22 are fixedly connected to the connecting pieces 23 respectively, and the electrostatic adsorption roller 25 is provided between the two connecting pieces 23. The tops of the two connecting pieces 23 and 25 are fixedly connected to the bottom of the limiting post 26. The cross-section of the limiting post 26 is rectangular. The center of the limiting frame 8 is provided with a rectangular hole, and the limiting post 26 is movably installed inside the rectangular hole.

[0029] The inner wall of the drive shaft 20 is covered with a layer of silk 24. The electrostatic adsorption roller 25 is movably disposed in the cavity inside the drive shaft 20 and rubs against the silk layer 24. The outer wall of the electrostatic adsorption roller 25 rubs against the silk layer 24 to generate static electricity. When the electrostatic adsorption roller 25 moves to the outside of the drive shaft 20, it adsorbs feed dust by electrostatic adsorption.

[0030] The height of the stirring shaft 18 shall not exceed two-thirds of the height of the stirring tank 7, and the amount of feed added during feeding shall not exceed the height of the drive shaft 20.

[0031] The working principle of this invention is as follows: the tooth groove on the outside of the fixed toothed disc meshes with the gear at the bottom of the drive gear. The movable disc is connected to three connecting rods on its outer side. The drive gear rotates around the movable disc and meshes with the tooth groove on the outside of the fixed toothed disc, thus rotating simultaneously and driving the transmission gear meshing with it to rotate. Due to the connecting arm fixed at the top of the transmission gear, when the transmission gear rotates, the stirring shaft and stirring blades at the other end of the connecting arm rotate around the transmission gear, thereby stirring and mixing the feed inside the mixing tank. When the movable gear at the bottom of the other end of the connecting arm rotates around the transmission gear, it moves to the position of the drive gear and the fixed gear and meshes with them. The rotation of the drive gear and the fixed gear drives the movable gear to rotate, ultimately driving the stirring shaft and stirring blades at the top of the movable gear to rotate, so that the stirring blades can more thoroughly stir the feed. This stirring method allows the stirring blades to have a large stirring range when they move in a circle around the movable gear. At the same time, the intermittent meshing and rotation of the movable gear with the drive gear and the fixed gear drives the stirring blades to rotate and stir. When the drive shaft is positioned on the upper surface of the movable disc, the drive shaft rotates along with the movable disc. Since the limiting post is limited by the limiting frame, the rotation of the drive shaft drives the transmission block inside the wave groove to move inside the wave groove. This causes the mounting ring connected to the transmission block to move up and down on the surface of the drive shaft. As a result, the electrostatic adsorption roller moves up and down continuously within the inner cavity of the drive shaft. Because the drive shaft rotates continuously and the electrostatic adsorption roller moves up and down, the electrostatic adsorption roller rubs against the rotating silk layer, causing the electrostatic adsorption roller to become electrostatically charged. When the electrostatic adsorption roller is located outside the drive shaft, the electrostatically charged electrostatic adsorption roller adsorbs dust, preventing dust from overflowing from the mixing tank.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. An automatic feeding device for pig farming, comprising a base (1) and a mixing tank (7) disposed on the base (1), characterized in that: The mixing tank (7) is equipped with a mixing component and a dust suppression component. The dust suppression component is installed directly above the mixing component, and the mixing component and the dust suppression component are driven by the same motor (9). The stirring assembly includes a fixed toothed disc (10), which is fixedly installed on the bottom wall inside the stirring tank (7). A movable disc (11) is rotatably arranged at the top center of the fixed toothed disc (10). Three connecting rods (12) are arranged in an array on the outer side of the movable disc (11). A drive gear (13) is installed at the other end of each connecting rod (12). The drive gear (13) consists of two gears of the same size connected by a middle shaft. The gear at the bottom of the drive gear (13) meshes with the tooth groove on the outer side of the fixed toothed disc (10). The middle shaft of the drive gear (13) passes through the connecting rod (12). The gear at the top of the drive gear (13) is connected to a transmission gear on one side. (14) Meshing connection: The bottom of the transmission gear (14) is installed on the top of the connecting rod (12). The other side of the transmission gear (14) relative to the drive gear (13) is meshed with a fixed gear (15). The bottom of the fixed gear (15) is installed on the top of the connecting rod (12). The top of the transmission gear (14) is fixedly connected to one end of the connecting arm (17). The other end of the connecting arm (17) is equipped with a stirring shaft (18). The stirring shaft (18) passes through the connecting arm (17) to its bottom and is fixedly connected to the movable gear (16). The movable gear (16) meshes with the drive gear (13) and the fixed gear (15) respectively during the rotation of the transmission gear (14) around it.

2. The automatic feeding device for pig farming according to claim 1, characterized in that, A side plate (2) is installed on each of the top two sides of the base (1). The mixing tank (7) is located between the two side plates (2). The mixing tank (7) is movably connected to the inner side of the side plate (2) by two connecting shafts (6) on opposite sides. One of the connecting shafts (6) passes through one of the side plates (2) to its outside and is fixedly connected to one end of the extension shaft (5). The outer side of the extension shaft (5) is fixedly connected to the movable part (4). The bottom of the movable part (4) is fixedly connected to the output end of the telescopic cylinder (3). The telescopic cylinder (3) is welded to the upper surface of the base (1). A limiting frame (8) is installed on the top of the mixing tank (7). The limiting frame (8) is cross-shaped.

3. The automatic feeding device for pig farming according to claim 2, characterized in that, The motor (9) is fixedly connected to the bottom center of the mixing tank (7). The top output end of the motor (9) passes through the bottom of the mixing tank (7) to its interior and passes through the bottom of the fixed gear plate (10) to its top and is fixedly connected to the bottom of the movable plate (11). The motor (9) drives the movable plate (11) to rotate, which drives the drive gear (13) to mesh and rotate around the outer side of the fixed gear plate (10).

4. The automatic feeding device for pig farming according to claim 3, characterized in that, The stirring assembly also includes stirring blades (19), of which there are three, and each is installed on the outer side of the three stirring shafts (18).

5. The automatic feeding device for pig farming according to claim 4, characterized in that, The upper and lower gears of the drive gear (13), as well as the transmission gear (14), fixed gear (15) and movable gear (16), are all the same size. The drive gear (13), transmission gear (14) and fixed gear (15) are all mounted on the connecting rod (12) and are arranged outward from the connecting rod (12) in sequence.

6. The automatic feeding device for pig farming according to claim 5, characterized in that, The dust suppression assembly includes a drive shaft (20), which is fixedly installed on the top of the movable disc (11) via a bottom flange. The drive shaft (20) has a hollow structure inside, and a wave groove is opened on the outer surface of the drive shaft (20). The wave groove is a closed groove connected end to end. A drive block (21) is movably installed inside the wave groove. The outer side of the drive block (21) is fixedly connected to the inner side of the mounting ring (22), and the mounting ring (22) is movably sleeved on the outer side of the drive shaft (20).

7. The automatic feeding device for pig farming according to claim 6, characterized in that, Connecting pieces (23) are fixedly connected to the top two sides of the mounting ring (22), and an electrostatic adsorption roller (25) is provided between the two connecting pieces (23). The tops of the two connecting pieces (23) and 25 are fixedly connected to the bottom of the limiting post (26). The cross-section of the limiting post (26) is rectangular. A rectangular hole is opened at the center of the "cross" shape of the limiting frame (8), and the limiting post (26) is movably disposed inside the rectangular hole.

8. The automatic feeding device for pig farming according to claim 7, characterized in that, The inner wall of the drive shaft (20) is covered with a layer of silk (24). The electrostatic adsorption roller (25) is movably disposed in the cavity inside the drive shaft (20) and rubs against the silk layer (24). The outer wall of the electrostatic adsorption roller (25) rubs against the silk layer (24) to generate static electricity. When the electrostatic adsorption roller (25) moves to the outside of the drive shaft (20), it adsorbs feed dust by electrostatic adsorption.

9. The automatic feeding device for pig farming according to claim 8, characterized in that, The height of the stirring shaft (18) shall not exceed two-thirds of the height of the stirring tank (7), and the amount of feed added during feeding shall not exceed the height of the drive shaft (20).

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