Material conveying device

Abstract

The invention relates to the technical field of material conveying, and provides a material conveying device which comprises a protective shell, a rotating rod is rotatably connected to the interior of the left end of the protective shell, a driving assembly is fixedly connected to the exterior of the rotating rod, and an auger frame is fixedly and rotatably connected to the interior of the protective shell; a discharging assembly is fixedly connected to the exterior of the auger frame, a limiting shell is fixedly connected to the right end of the protective shell, a connecting column is slidably connected to the interior of the limiting shell, a plurality of fixing sleeves are fixedly connected to the interior of the protective shell, and rotating sleeves are rotationally connected to the ends, close to each other, of the fixing sleeves correspondingly; a plurality of scraping assemblies are fixedly connected to the outer portion of the connecting column. By means of the technical scheme, the problems that in the prior art, when residual materials are accumulated to a certain degree, the maintenance cost is increased, and the downtime is prolonged are solved; and in addition, residual materials may deteriorate due to long-time retention, the subsequent material quality is affected, and even equipment faults are caused.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of material conveying, and in particular, to a material conveying device. Background Art

[0002] The present invention relates to the field of material conveying technology, and more specifically, to a material conveying device for conveying granular or powdered materials in the chemical, food, and building materials industries. In industrial production, material conveying devices must continuously and efficiently transport materials while ensuring the cleanliness of the equipment to avoid reduced conveying efficiency or contamination caused by residual material.

[0003] Existing material conveying devices typically use an auger mechanism to transport materials. Their operating principle is: a motor drives the auger, and material enters the feed port and is pushed along the auger's spiral to the discharge port. However, existing devices generally lack automatic cleaning mechanisms on the auger surface, allowing material to easily adhere to the surface and form residues. When this residue accumulates to a certain level, it increases maintenance costs and downtime. Furthermore, the residue can deteriorate over time, affecting the quality of subsequent materials and even causing equipment failure. Summary of the Invention

[0004] In order to overcome the above-mentioned defects, the present invention provides a material conveying device, which solves the technical problems of a material conveying device in the related art / existing art.

[0005] According to one aspect, at least one embodiment of the present invention provides a material conveying device, comprising: a protective shell, the left end of the protective shell is internally rotatably connected to a rotating rod, the outside of the rotating rod is fixedly connected to a driving assembly, the inside of the protective shell is fixedly rotatably connected to a auger frame, the outside of the auger frame is fixedly connected to a blanking assembly, the right end of the protective shell is fixedly connected to a limiting shell, the inside of the limiting shell is slidingly connected to a connecting column, the inside of the protective shell is fixedly connected to a plurality of fixed sleeves, the adjacent ends of the plurality of fixed sleeves are respectively rotatably connected to rotating sleeves, the outside of the connecting column is fixedly connected to a plurality of scraping assemblies, the right end of the connecting column is externally fixedly connected to a linkage gear, the inside of the limiting shell is rotatably connected to a rotating column, and the outside of the rotating column is fixedly connected to a transmission assembly.

[0006] For example, in a material conveying device provided by at least one embodiment of the present invention, it also includes: the driving assembly includes a motor, the driving end of the motor is fixedly connected to the front end of the rotating rod, the outside of the motor is fixedly connected to a bevel gear 1, the front right side of the protective shell is fixedly connected to an organic shell, the outside of the auger frame is fixedly connected to a bevel gear 2, and the bevel gear 2 is meshingly connected to the bevel gear 1.

[0007] According to another aspect, at least one embodiment of the present invention also provides a material conveying device, including: the unloading component includes a feed tank, the bottom end of the feed tank is fixedly connected to the top of the protective shell, the inner bottom end of the feed tank is fixedly connected to a fixed block, the internal rotation of the fixed block is connected to a limiting rod, the bottom end of the limiting rod is fixedly connected to a rotating plate, the outside of the limiting rod is fixedly connected to two stirring plates, and the outside of the auger frame is fixedly connected to a connecting plate.

[0008] For example, a material conveying device provided in at least one embodiment of the present invention further includes: the scraping assembly includes a plurality of connecting sleeves, the interior of the connecting sleeves is rotatably connected to the interior of the connecting column, the bottom end of the connecting column is fixedly connected to a connecting block, the left end of the inner wall of the connecting block is fixedly connected to a telescopic rod, the outer sleeve of the telescopic rod is provided with a spring, and the interior of the connecting block is slidably connected to a scraper.

[0009] According to another aspect, at least one embodiment of the present invention also provides a material conveying device, including: the transmission assembly includes a linkage gear and a transmission gear, the interior of the linkage gear is fixedly connected to the outer right end of the connecting column, the interior of the transmission gear is fixedly connected to the outside of the rotating column, the interior of the limiting shell is fixedly connected with a gear ring, the gear ring is meshed with the linkage gear, and the linkage gear is meshed with the transmission gear.

[0010] For example, a material conveying device provided in at least one embodiment of the present invention further includes: the outside of the connecting block is fixedly connected to the inside of the rotating sleeve, and the outside of the auger frame is in contact with the outside of the right end of the scraper.

[0011] According to another aspect, at least one embodiment of the present invention further provides a material conveying device, comprising: the top end of the connecting plate contacts the outside of the rotating plate, and the outside of the stirring plate contacts the inner wall of the feed tank.

[0012] For example, a material conveying device provided in at least one embodiment of the present invention further includes: the rear end of the auger frame is fixedly connected to the front end of the rotating column, and the left end of the connecting column is movably connected to the left end of the inner wall of the protective shell.

[0013] The beneficial effects of the embodiments of the present invention are: 1. In this invention, the auger frame drives the rotating column, and the meshing structure of the transmission gear, linkage gear, and gear ring drives the connecting column and scraper, achieving the beneficial effect of automatically cleaning the auger frame surface. This not only avoids the impact of material residue on conveying efficiency, but also reduces the workload of manual cleaning, extends the service life of the device, and ensures the stability and continuity of the conveying process.

[0014] 2. In this invention, the motor drives the rotating rod, and the meshing structure of bevel gears 1 and 2 drives the auger frame to rotate, achieving the beneficial effect of efficient material discharge within the protective shell. This structural design ensures stable and efficient power transmission, can adapt to the conveying requirements of different materials, and improves the applicability and working efficiency of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly describes the drawings required for describing the embodiments of the present invention. Obviously, the drawings described below are merely exemplary embodiments of the present invention. Those skilled in the art can, without inventive effort, derive other drawings based on the contents of the exemplary embodiments of the present invention and these drawings.

[0016] Figure 1 This is a structural schematic diagram of a material conveying device according to an embodiment of the present invention; Figure 2 for Figure 1 A schematic structural diagram of a feed tank in an embodiment of the present invention; Figure 3 for Figure 1 A schematic structural diagram of a fixing sleeve in an embodiment of the present invention; Figure 4 for Figure 1 A schematic structural diagram of a connecting column in an embodiment of the present invention; Figure 5 for Figure 1 A schematic structural diagram of the rotating sleeve in the embodiment of FIG. Figure 6 for Figure 5 A structural cross-sectional view of a connecting block in an embodiment of the present invention; Figure 7 for Figure 3 A schematic structural diagram of the linkage gear in the embodiment; Figure 8 for Figure 7 Schematic diagram of the structure of the gear ring in the embodiment of FIG.

[0017] In the figure: 1. Protective shell; 2. Rotating rod; 3. Motor; 4. Casing; 5. Bevel gear 1; 6. Auger frame; 7. Bevel gear 2; 8. Connecting plate; 9. Feed tank; 10. Fixed block; 11. Limiting rod; 12. Rotating plate; 13. Stirring plate; 14. Limiting shell; 15. Connecting column; 16. Fixed sleeve; 17. Rotating sleeve; 18. Connecting sleeve; 19. Connecting block; 20. Scraper; 21. Telescopic rod; 22. Spring; 23. Linkage gear; 24. Rotating column; 25. Transmission gear; 26. Gear ring. DETAILED DESCRIPTION

[0018] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention.

[0019] To simplify the drawings, only portions relevant to the invention are schematically depicted in each figure; they do not represent the actual structure of the product. Furthermore, to simplify the drawings and facilitate understanding, in some figures, only one component with the same structure or function is schematically depicted or labeled. In this document, "one" not only means "only one" but also "more than one," and "several" includes "two" and "more than two."

[0020] It should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in the present invention based on the specific circumstances.

[0021] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0022] In the description of this embodiment, the terms "up", "down", "left", "right", etc., and the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be understood as a limitation on the present invention.

[0023] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0024] like Figures 1 to 4As shown, it shows a material conveying device in one embodiment of the present invention, including a protective shell 1, a rotating rod 2, a driving assembly, a auger frame 6, a material discharge assembly, a limiting shell 14, a connecting column 15, a fixed sleeve 16, a rotating sleeve 17, a scraping assembly, a rotating column 24 and a transmission assembly.

[0025] The left end of the protective shell 1 is internally connected to the rotating rod 2, and the outside of the rotating rod 2 is connected to the motor 3 through a drive assembly. The motor 3 acts as a power source and starts when the power is turned on. Its drive end outputs rotational power to drive the rotating rod 2 to rotate around the axis of the left end of the protective shell 1. The bevel gear 15 fixed on the outside of the rotating rod 2 rotates synchronously with the rotating rod 2. Through the meshing transmission with the bevel gear 27 on the outside of the auger frame 6, the horizontal rotational power is converted into axial rotational power of the auger frame 6. The teeth of the bevel gear 15 and the teeth of the bevel gear 27 mesh with each other. When the bevel gear 15 rotates, the meshing force of the bevel gear 27 drives the auger frame 6 to rotate stably around its axis, providing a power basis for material transportation.

[0026] like Figure 1~Figure 2 As shown, the unloading assembly consists of a feed tank 9, a fixed block 10, a limit rod 11, a connecting plate 8, a rotating plate 12 and a stirring plate 13. Each component is mechanically linked to achieve uniform stirring of the material and prevent residue treatment.

[0027] Feed tank 9 is cylindrical in structure, its bottom end fixedly connected to the top of protective shell 1 by evenly distributed bolts, forming a sealed material inlet channel. A block-shaped fixed block 10 is fixed to the center of the bottom end of feed tank 9. The center of fixed block 10 is rotatably connected to the bottom end of limit rod 11 via a deep groove ball bearing. This bearing allows limit rod 11 to rotate freely about its own axis and provides radial support for limit rod 11.

[0028] As the auger frame 6 rotates, its externally fixed connecting plate 8 moves in a synchronous circular motion. The top edge of the connecting plate 8 is designed as a curved push surface, forming a linear contact with the outer circumference of the rotating plate 12. As the connecting plate 8 rotates, the curved push surface continuously pushes the rotating plate 12, causing it to rotate the limiting rod 11 around the bearing axis. The rotating plate 12 and limiting rod 11 are secured via a key connection, ensuring stable torque transmission.

[0029] Two stirring plates 13 are symmetrically fixed to the outside of the rod body of the limiting rod 11. The two stirring plates 13 are distributed at 180 degrees, and their plate surfaces are perpendicular to the axis of the limiting rod 11. When the limiting rod 11 rotates, the stirring plates 13 move in a circular motion with it, and the plate surfaces are in full contact with the material in the feed tank 9. The rotational thrust of the stirring plates 13 causes the material to tumble and convect, breaking up the agglomerated material and mixing it evenly, ensuring that the material entering the protective shell 1 is in a loose state. At the same time, the edge of the stirring plate 13 is in close contact with the inner wall of the feed tank 9, and its edge profile is consistent with the curvature of the inner wall of the feed tank 9. During the rotation, the material attached to the tank wall can be scraped off to prevent the material from accumulating at the feed port to form a residual layer.

[0030] This unloading assembly drives the stirring plates 13 via the rotation of the auger frame 6, eliminating the need for an additional power source, achieving the dual functions of material pretreatment and residue prevention. The symmetrical distribution of the stirring plates 13 ensures balanced stirring force, preventing the limit rod 11 from shaking due to uneven force. The scraping structure, which conforms to the tank wall, eliminates material accumulation at the source, laying the foundation for subsequent efficient transportation.

[0031] like Figures 3 to 6 As shown, the spiral blades of the auger frame 6 are axially fixed to the outside of the central axis. As the auger frame 6 rotates about its axis, the spiral surface of the spiral blades contacts the material, pushing the pre-processed material to the right along the protective shell 1 through friction and thrust. The material is moved axially along the spiral direction by the spiral blades—each turn of the spiral blades forms a conveying unit. Propelled by the blades, the material gradually moves from the feed end to the discharge end until it is discharged from the discharge port at the right end of the protective shell 1. A small gap is maintained between the inner wall of the protective shell 1 and the outer edge of the spiral blades to prevent material leakage during conveying and provide a guide channel for the material.

[0032] like Figure 6 As shown, the scraping assembly includes a connecting column 15, a sliding bearing, a connecting sleeve 18, a rotating sleeve 17, a fixed sleeve 16, a connecting block 19, a telescopic rod 21, a spring 22 and a scraper 20. The various components are precisely matched to achieve automatic cleaning of the surface of the auger frame 6.

[0033] Mechanical design of connecting columns and support systems The left end of the connecting column 15 is movably connected to the left end of the inner wall of the protective shell 1 through a sliding bearing, and the bearing matching clearance is controlled to ensure that the connecting column 15 can flexibly rotate and move axially.

[0034] Rotating sleeve 17 and fixed sleeve 16: Rotating sleeve 17 fits over the right end of connecting column 15. Its inner diameter forms a transition fit with the outer diameter of connecting column 15. Its outer circumference is rotatably connected to fixed sleeve 16 via a ball bearing. Three to five fixed sleeves 16 are evenly distributed along the axial direction of protective shell 1 and are bolted to the inner wall of protective shell 1. They provide radial support for connecting column 15 and allow axial movement.

[0035] Elastic support and scraper fitting mechanism Connecting block 19 and elastic component: The connecting block 19 is a U-shaped structure, and the left end of its inner wall is fixed with a telescopic rod 21 by a bolt, and a spring 22 is sleeved on the outside of the telescopic rod 21. The other end of the spring 22 abuts the scraper 20, and the elastic force makes the pressure of the scraper 20 close to the surface of the auger frame 6.

[0036] Dynamic fit of the scraper 20: The scraper 20 is slidably connected to the inner portion of the connecting block 19 via a T-shaped slider. The slider and the chute ensure that the scraper 20 floats adaptively along the surface of the auger frame 6. When the surface of the auger frame 6 bulges due to material accumulation, the spring 22 is compressed to maintain the fit accuracy of the scraper 20 and the auger frame 6.

[0037] like Figure 7-Figure 8 As shown, when the auger frame 6 rotates, the rotating column 24 fixed at its rear end rotates synchronously with the auger frame 6, and the transmission gear 25 fixed on the outside of the rotating column 24 meshes with the linkage gear 23 for transmission: when the transmission gear 25 rotates, the teeth of the transmission gear 25 drive the linkage gear 23 to rotate around the axis of the connecting column 15; at the same time, the outer peripheral surface of the linkage gear 23 meshes with the toothed ring 26 fixed inside the limit shell 14 - the toothed ring 26 is fixed, and the linkage gear 23 is subjected to the reaction force of the toothed ring 26 while rotating, driving the connecting column 15 to reciprocate along the axial direction of the protective shell 1. The combined rotation and axial movement of the connecting column 15 causes the scraper 20 to form a spiral motion trajectory on the surface of the auger frame 6, fully covering the surface of the spiral blades and scraping away material attached during the conveying process - when the scraper 20 contacts residual material, the material is peeled off from the blade surface through mechanical scraping, preventing material accumulation from affecting the conveying efficiency, and at the same time avoiding long-term residual material from deteriorating or causing equipment failure.

[0038] Start drive principle Its drive end, connected via a key, drives the rotating rod 2 to rotate about the axis of the left end of the protective housing 1. Bevel gear 1 (5) fixed to the housing of motor 3 rotates synchronously with the rotating rod 2. Through vertical meshing with bevel gear 2 (7) at the front end of the auger frame 6, it converts horizontal rotational power into axial rotational power for the auger frame 6. The auger frame 6 maintains a stable speed, ensuring the power foundation for material transportation.

[0039] Principles of material intake and initial processing The material enters from the top of the feed tank 9, and the bottom of the feed tank 9 is fixed by a fixed block 10 with bolts to support the rotation axis of the limit rod 11. When the auger frame 6 rotates, the connecting plate 8 fixed to its outside rotates with the speed of the auger frame 6. The top edge of the connecting plate 8 continuously pushes the rotating plate 12 to rotate around the axis of the limit rod 11, driving the limit rod 11 to rotate.

[0040] The two stirring plates 13 symmetrically arranged outside the limiting rod 11 rotate with the limiting rod 11. The stirring torque generated when the plate surface contacts the material causes the granular material to tumble and mix. A gap is maintained between the edge of the stirring plate 13 and the inner wall of the feed tank 9, and the residual material on the tank wall is scraped off by rotation.

[0041] Material conveying principle The spiral blades of the auger frame 6 are fixed axially along the central axis. When the auger frame 6 rotates, the dynamic friction between the spiral surface and the material generates an axial thrust, pushing the material to the right along the protective shell 1. The gap between the inner wall of the protective shell 1 and the outer edge of the spiral blade prevents material leakage while guiding the material to the discharge end.

[0042] For powdered materials, the pre-treatment of the stirring plate 13 can prevent the arch bridge effect and ensure the continuity of transportation.

[0043] Scraping cleaning principle The left end of the connecting column 15 is movably connected to the inner wall of the protective shell 1 through a sliding bearing, and the right end is clearance-matched with the rotating sleeve 17 through the connecting sleeve 18. The outer peripheral surface of the rotating sleeve 17 is rotatably connected to the fixed sleeve 16. The fixed sleeves 16 are evenly distributed 3-5 times along the axial direction of the protective shell 1 to support the rotation and axial movement of the connecting column 15.

[0044] When the auger frame 6 rotates, the rotating column 24 fixed at its rear end drives the transmission gear 25 to rotate synchronously. The transmission gear 25 meshes with the linkage gear 23, causing the linkage gear 23 to rotate around the axis of the connecting column 15. At the same time, the linkage gear 23 meshes with the toothed ring 26 inside the limit housing 14. The toothed ring 26 is fixed and the linkage gear 23 generates an axial component of force while rotating, driving the connecting column 15 to reciprocate along the axial direction of the protective housing 1.

[0045] In the connecting block 19 at the bottom end of the connecting column 15, the telescopic rod 21 and the spring 22 elastically support the scraper 20, so that the scraper 20 always maintains pressure close to the surface of the auger frame 6. The rotation and axial composite movement of the connecting column 15.

[0046] Continuous circulation and delivery completion principle When motor 3 is continuously driven, the system enters a cyclic working state: Power input: Motor 3 maintains the speed and drives the auger frame 6 to rotate through the bevel gear pair; Material handling: The stirring plate 13 in the feed tank 9 stirs the material, and the auger 6 transports the material; Automatic cleaning: The scraping component reciprocates to continuously clean the surface of the auger frame 6; Circulation control: Through the linkage between the material level sensor of the feed tank 9 and the flow sensor at the discharge end, when the material level is lower than the set value and there is no material output at the discharge end, the system delays the shutdown of the motor 3 to complete the transportation.

[0047] Core transmission and cleaning innovation principle Bevel gear pair power conversion The vertical meshing structure of bevel gear 1 5 and bevel gear 2 7 is adopted with a transmission ratio of 2:1, which converts the horizontal rotation of the motor 3 into the axial rotation of the auger frame 6 to adapt to the load changes of different material conveying.

[0048] Ring-gear linkage scraping By utilizing the meshing reaction force of the gear ring 26 and the linkage gear 23, the connecting column 15 generates a compound motion of "rotation + axial movement" without the need for an additional drive source, and the scraping track covers the entire surface of the auger frame 6.

[0049] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A material conveying device, comprising a protective shell (1), characterized in that: The left end of the protective shell (1) is internally rotatably connected to a rotating rod (2), the outside of the rotating rod (2) is fixedly connected to a driving assembly, the inside of the protective shell (1) is fixedly rotatably connected to a auger frame (6), the outside of the auger frame (6) is fixedly connected to a blanking assembly, the right end of the protective shell (1) is fixedly connected to a limiting shell (14), the inside of the limiting shell (14) is slidably connected to a connecting column (15), the inside of the protective shell (1) is fixedly connected to a plurality of fixed sleeves (16), and the adjacent ends of the plurality of fixed sleeves (16) are respectively rotatably connected to rotating sleeves (17), the outside of the connecting column (15) is fixedly connected to a plurality of scraping assemblies, the right end of the connecting column (15) is externally fixedly connected to a linkage gear (23), the inside of the limiting shell (14) is rotatably connected to a rotating column (24), and the outside of the rotating column (24) is fixedly connected to a transmission assembly.

2. A material conveying device according to claim 1, characterized in that: The driving assembly comprises a motor (3), a driving end of the motor (3) being fixedly connected to the front end of the rotating rod (2), a bevel gear 1 (5) being fixedly connected to the outside of the motor (3), a housing (4) being fixedly connected to the right side of the front end of the protective shell (1), and a bevel gear 2 (7) being fixedly connected to the outside of the auger frame (6), and the bevel gear 2 (7) being meshed with the bevel gear 1 (5).

3. A material conveying device according to claim 1, characterized in that: The unloading assembly comprises a feed tank (9), the bottom end of the feed tank (9) is fixedly connected to the top end of the protective shell (1), the inner bottom end of the feed tank (9) is fixedly connected to a fixed block (10), the inner rotation connection of the fixed block (10) is a limit rod (11), the bottom end of the limit rod (11) is fixedly connected to a rotating plate (12), the outer portion of the limit rod (11) is fixedly connected to two stirring plates (13), and the outer portion of the auger frame (6) is fixedly connected to a connecting plate (8).

4. A material conveying device according to claim 1, characterized in that: The scraping assembly comprises a plurality of connecting sleeves (18), the interior of the connecting sleeves (18) being rotatably connected to the interior of the connecting column (15), the bottom end of the connecting column (15) being fixedly connected to a connecting block (19), the left end of the inner wall of the connecting block (19) being fixedly connected to a telescopic rod (21), the outer sleeve of the telescopic rod (21) being provided with a spring (22), and the interior of the connecting block (19) being slidably connected to a scraper (20).

5. The material conveying device according to claim 1, characterized in that: The transmission assembly comprises a linkage gear (23) and a transmission gear (25); the interior of the linkage gear (23) is fixedly connected to the right end of the exterior of the connection column (15); the interior of the transmission gear (25) is fixedly connected to the exterior of the rotation column (24); a gear ring (26) is fixedly connected to the interior of the limit housing (14); the gear ring (26) is meshed with the linkage gear (23); and the linkage gear (23) is meshed with the transmission gear (25).

6. A material conveying device according to claim 4, characterized in that: The outside of the connecting block (19) is fixedly connected to the inside of the rotating sleeve (17), and the outside of the auger frame (6) is in contact with the outside of the right end of the scraper (20).

7. The material conveying device according to claim 3, characterized in that: The top end of the connecting plate (8) contacts the outside of the rotating plate (12), and the outside of the stirring plate (13) contacts the inner wall of the feed tank (9).

8. The material conveying device according to claim 5, characterized in that: The rear end of the auger frame (6) is fixedly connected to the front end of the rotating column (24), and the left end of the connecting column (15) is movably connected to the left end of the inner wall of the protective shell (1).

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