Self-cleaning anti-blocking rotary center material passing device

Abstract

The invention relates to a self-cleaning anti-blocking rotary center material passing device, which relates to the technical field of disc type feeders, and comprises a hopper, a guide cylinder, a driving device and a scraper unit, a mounting through hole is formed in the center of the hopper, the guide cylinder is rotationally connected with the inner wall of the mounting through hole, and the top edge of the guide cylinder is not higher than the inner bottom surface of the hopper; the scraper unit comprises a scraper body and a scraper rest; the knife rest is connected with the guide cylinder, the knife body is crescent-shaped and attached to the inner bottom surface of the hopper, one end of the knife body is detachably connected with the knife rest, and the other end of the knife body elastically abuts against the side wall of the hopper; the projection line of the inner side wall of the cutter body on the bottom surface of the hopper is tangent to the inner side wall of the guide cylinder; the width, the thickness and the inner side wall radian of the cutter body are gradually increased from the end, elastically abutting against the side wall of the hopper, of the cutter body to the other end of the cutter body. The technical problem that the material flow fluctuates due to the fact that the tail end of a scraper in an existing disc feeder cannot adjust pressure applied to materials along with dynamic changes of the materials is solved to a certain extent.

Description

Technical Field

[0001] This invention relates to the field of disc feeder technology, and more particularly to a self-cleaning, anti-clogging vortex feeding device. Background Technology

[0002] Disc feeders are a common type of raw material feeding equipment, widely used in industries such as metallurgy, coal, building materials, and chemicals.

[0003] Chinese patent CN222573708U discloses a central disc feeder, including a connecting shell, a scraper, a disc body, a support plate, and a drive device. The connecting shell and the guide body are integrally welded, and the guide body is welded to the connecting shell via a support arm. The scraper consists of two blades; one end is fixed to the intermediate shaft of the guide body via a bearing and arranged in a spiral around the axis; the other end is connected to the connecting shell via a connecting plate using pins or bolts. A wear-resistant liner can be installed on the inner arc of the scraper, and a wear-resistant liner is also installed on the upper surface of the disc body. The drive device drives the disc body to rotate. When material in the hopper is fed, it falls into the connecting shell and is guided by the guide body to fall to the periphery of the disc body. Under the rotation of the disc body, it contacts and impacts the scraper, and under the pressure of the scraper, is pushed into the material discharge hole in the center of the disc body.

[0004] In the aforementioned central disc feeder, the end of the scraper is connected to the connecting shell. When the material is discharged from the discharge hole, the end of the scraper cannot adjust the pressure applied to the material according to the dynamic changes of the material. The material is easily compacted or suspended, resulting in "material blockage" and "material interruption", which in turn increases the flow fluctuation of the central disc feeder. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a self-cleaning, anti-clogging vortex feeding device. The device includes a rotating, crescent-shaped blade that uses its elasticity to scrape away material adhering to the hopper based on dynamic material changes. The curvature of the inner wall of the blade gradually increases from the end that elastically contacts the hopper sidewall to the other end, helping to guide the material along the inner wall of the blade to move towards the guide tube during blade rotation. This solves the technical problem in existing disc feeders where the scraper tip cannot adjust the pressure applied to the material according to dynamic material changes, leading to "material blockage" and "material interruption," thus increasing the flow rate fluctuation of the central disc feeder.

[0006] This invention provides a self-cleaning anti-clogging material vortex feeding device, including a hopper, a guide cylinder, a driving device, and a scraper unit; the hopper has a mounting through hole in the center, the guide cylinder is rotatably connected to the inner wall of the mounting through hole, the top edge of the guide cylinder is lower than or flush with the bottom surface of the hopper, and the driving device is used to drive the guide cylinder to rotate. The scraper unit includes a blade body and a blade holder; the blade holder is connected to the inner wall of the guide tube, the blade body is crescent-shaped and fits against the inner bottom surface of the hopper, one end of the blade body is detachably connected to the blade holder, and the other end of the blade body elastically abuts against the side wall of the hopper; the projection line of the inner side wall of the blade body on the bottom surface of the hopper is tangent to the inner side wall of the guide tube; the width, thickness and curvature of the inner side wall of the blade body gradually increase from the end of the blade body that elastically abuts against the side wall of the hopper to the other end of the blade body.

[0007] In some embodiments, the blade body has a hollow structure and is made of multiple steel plates sealed and welded together.

[0008] In some embodiments, the cutter body includes an inner arc plate, an outer arc plate, a connecting end plate, an abutting end plate, a top plate, a bottom plate, and a web plate. The inner and outer arc plates are welded to the top surface of the bottom plate, and the top plate is welded between the inner and outer arc plates. The web plate is located between the bottom plate and the top plate and is welded between the inner and outer arc plates. The inner arc plate, outer arc plate, top plate, bottom plate, and web plate are sealed and welded to form a crescent-shaped hollow structure. The connecting end plate and the abutting end plate are respectively sealed and welded to both ends of the crescent-shaped hollow structure. The connecting end plate is connected to the cutter holder by multiple bolts, and the abutting end plate abuts against the side wall of the hopper.

[0009] In some embodiments, the scraper unit further includes a liner attached to the inner wall of the blade body and detachably connected to the blade body by a plurality of bolts; the surface of the liner is coated with a ceramic coating.

[0010] In some embodiments, the bottom surface of the blade is a slope, the side of the bottom surface of the blade near the inner wall of the blade is the bottom edge, and the side of the bottom surface of the blade near the outer wall of the blade is the top edge; the height difference between the top edge and the bottom edge of the bottom surface of the blade is less than or equal to 5 mm; and the roughness of the bottom surface of the blade is greater than or equal to Ra12.5 μm.

[0011] In some embodiments, the self-cleaning anti-clogging vortex feeding device further includes a first sealing unit, which is used to rotate and seal the hopper and the guide tube. An installation groove is provided on the bottom surface of the hopper, and the first sealing unit includes a sealing plate; the sealing plate is installed in the installation groove and matches the shape of the installation groove, and the center of the sealing plate has a discharge through hole aligned with the guide tube; an annular groove is provided on the bottom surface of the sealing plate, and the annular groove matches the guide tube to form a labyrinth seal.

[0012] In some embodiments, the first sealing unit further includes a first sealing ring and a second sealing ring; a sealing groove is provided on the bottom wall of the mounting groove, the first sealing ring is located in the sealing groove, and the first sealing ring is sealed and attached to the sealing plate, the hopper and the outer wall of the guide tube; a positioning groove is provided on the outer bottom surface of the hopper, and the second sealing ring is fixed in the positioning groove and sealed and attached to the outer wall of the guide tube.

[0013] In some embodiments, the drive device includes a motor, a drive gear, and a driven gear. The driven gear is connected to the guide tube, the drive gear meshes with the driven gear, and the drive gear is mounted on the output shaft of the motor.

[0014] In some embodiments, the self-cleaning anti-clogging vortex feeding device further includes a discharge cylinder, a bearing, and a third sealing ring; the discharge cylinder and the bearing are both sleeved on the outside of the guide cylinder, and there is a gap between the discharge cylinder and the guide cylinder; a third sealing ring is provided between the discharge cylinder and the guide cylinder to achieve rotational sealing between the discharge cylinder and the guide cylinder; the driven gear and the discharge cylinder are rotatably connected through the bearing.

[0015] In some embodiments, the discharge cylinder is divided into a discharge section and a protective section that are detachably connected at the top and bottom. The inner side of the protective section is provided with a protective groove for accommodating the bearing, the driving gear, and the driven gear. The top of the protective section is sealed and welded to the bottom surface of the hopper. A limiting part is provided on the inner side of both the discharge section and the protective section. A third sealing ring is clamped between the two limiting parts and is in contact with the outer wall of the guide cylinder. The protective section is provided with a lubricating oil pipe that penetrates the wall of the protective groove. The oil supply system on the outside of the protective groove automatically supplies lubricating oil to the driven gear, the driving gear, and the bearing through the lubricating oil pipe based on an electrical signal.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. During the relative rotation of the blade body and the hopper sidewall, the concave sidewall of the blade body rotates towards the material. The blade body, utilizing its own elasticity, adjusts the pressure applied to the hopper sidewall based on the dynamic changes in the material, scraping away material adhering to the sidewall in real time and preventing material accumulation dead zones at the bottom of the hopper. Simultaneously, the elastic blade body can adjust the pressure applied to the material according to its dynamic changes, reducing the occurrence of "material blockage" and "material interruption," ensuring smooth material flow and reducing fluctuations in material flow.

[0017] 2. The change in the curvature of the inner wall of the blade helps guide the material along the guide tube on the inner wall of the blade during the rotation of the blade, ensuring smooth material flow, reducing the occurrence of "material interruption", and reducing the fluctuation range of material flow.

[0018] 3. The variation in the thickness and width of the blade body corresponds to the change in the function of the blade body from loosening accumulated materials through elastic deformation and scraping off materials adhering to the wall, to guiding and promoting the flow of materials. This gradually improves the structural strength and bending resistance of the blade body, disperses stress in various parts of the blade body, reduces the possibility of breakage at the end of the blade body closest to its own rotation axis, and improves the durability of the blade body.

[0019] 4. Raising the bottom surface of the cutter body near the outer wall of the cutter body helps reduce the possibility of the cutter body tilting excessively due to the action of materials, which could lead to severe wear of the hopper and help extend the service life of the self-cleaning anti-clogging vortex feeding device. Attached Figure Description

[0020] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the bottom of the hopper in a specific embodiment of the present invention; Figure 2 This is a schematic diagram of the scraper unit in a specific embodiment of the present invention; Figure 3 This is a schematic diagram of the internal structure of the blade body in a specific embodiment of the present invention; Figure 4 This is a cross-sectional view of the bottom of the hopper and the structure below it in a specific embodiment of the self-cleaning anti-clogging vortex feeding device of the present invention; Figure 5 for Figure 4 Enlarged view of region A in the middle; Figure 6 for Figure 4 Enlarged view of region B in the middle; Figure 7 This is a schematic diagram of the self-cleaning anti-clogging material vortex feeding device in a specific embodiment of the present invention; Figure 8 This is a schematic diagram of the internal structure of the hopper in a specific embodiment of the present invention; Figure 9 This is a schematic diagram of the cross-section of the material distribution beam in a specific embodiment of the present invention; Figure 10 This is a schematic diagram illustrating the discharge cylinder in a specific embodiment of the present invention.

[0021] In the diagram: 1. Hopper; 2. Guide cylinder; 3. Drive unit; 31. Motor; 32. Drive gear; 33. Driven gear; 4. Scraper unit; 41. Scraper body; 411. Inner arc plate; 412. Outer arc plate; 413. Connecting end plate; 414. Abutting end plate; 415. Top plate; 416. Bottom plate; 417. Web plate; 418. Liner plate; 42. Scraper holder; 421. Support plate; 422. Mounting plate; 423. Reinforcing plate; 424. Vertical plate; 51. Sealing plate; 52. First sealing ring; 53. Second sealing ring; 54. Labyrinth seal; 61. Discharge section; 62. Protective section; 63. Bearing; 64. Third sealing ring; 65. Limiting part; 7. Inspection door; 8. Lubricating oil pipe; 91. Dividing cone; 92. Dividing beam. Detailed Implementation

[0022] The technical solutions in the embodiments of the present 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 the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0023] In the description of this invention, it should be understood that the terms "center", "lateral", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0024] The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first," "second," or "third" may explicitly or implicitly include one or more of that feature.

[0025] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0026] like Figure 1-10 As shown in an illustrative embodiment of a self-cleaning anti-clogging material vortex feeding device of the present invention, the self-cleaning anti-clogging material vortex feeding device includes at least: a hopper 1, a guide cylinder 2, a driving device 3, and a scraper unit 4. The hopper 1 has a central mounting hole, and the guide cylinder 2 is rotatably connected to the inner wall of the mounting hole. The top edge of the guide cylinder 2 is lower than or flush with the inner bottom surface of the hopper 1. The driving device 3 is used to drive the guide cylinder 2 to rotate.

[0027] The scraper unit 4 includes a blade body 41 and a blade holder 42. The blade holder 42 is connected to the inner wall of the guide tube 2. The blade body 41 is crescent-shaped and fits against the inner bottom surface of the hopper 1. One end of the blade body 41 is detachably connected to the blade holder 42, and the other end of the blade body 41 elastically abuts against the side wall of the hopper 1. The projection line of the inner side wall of the blade body 41 on the bottom surface of the hopper 1 is tangent to the inner side wall of the guide tube 2. The width, thickness, and curvature of the inner side wall of the blade body 41 gradually increase from the end of the blade body 41 that elastically abuts against the side wall of the hopper 1 to the other end of the blade body 41.

[0028] During the relative rotation of the blade 41 and the side wall of the hopper 1, the concave side wall of the blade 41 faces the rotating material. The blade 41, with its own elasticity, can adjust the pressure applied to the side wall of the hopper 1 based on the dynamic changes in the material, scraping away the material adhering to the side wall of the hopper 1 in real time, thus preventing material accumulation dead zones at the bottom of the hopper 1. Simultaneously, the elastic blade 41 can also adjust the pressure applied to the material according to the dynamic changes in the material, reducing the occurrence of "material blockage" and "material interruption," ensuring smooth material flow, and reducing fluctuations in the material flow rate.

[0029] The change in the curvature of the inner wall of the blade body 41 helps guide the material to move along the guide tube 2 along the inner wall of the blade body 41 during rotation, ensuring smooth material flow, reducing the occurrence of "material interruption", and reducing the fluctuation range of material flow.

[0030] The variation in the thickness and width of the blade body 41 corresponds to the change in the functional focus of the blade body 41 from loosening accumulated materials by means of elastic deformation and scraping off materials adhering to the wall to guiding and promoting the flow of materials. This gradually improves the structural strength and bending resistance of the blade body 41, disperses the stress in various parts of the blade body 41, reduces the possibility of breakage at the end of the blade body 41 closest to its own axis of rotation, and improves the durability of the blade body 41.

[0031] Unlike the scraper installation method in conventional disc feeders, the above-mentioned self-cleaning anti-clogging vortex feeding device eliminates the bearing 63, which is prone to failure due to material dust corrosion, in the connection between the scraper unit 4 and the guide cylinder 2. The scraper unit 4 and the guide cylinder 2 are directly fixedly connected, which significantly reduces the possibility of material corrosion failure at the connection between the scraper unit 4 and the guide cylinder 2, and helps to extend the service life of the scraper unit 4.

[0032] Furthermore, the inner wall of the blade body 41 can be divided into multiple integrally formed segments with different curvatures along its length, with adjacent segments being tangent. The outer wall of the blade body 41 can also be divided into multiple integrally formed segments with different curvatures along its length, with adjacent segments being tangent.

[0033] In some embodiments, the blade body 41 is a hollow structure, made of multiple steel plates sealed and welded together, which helps to reduce the weight of the blade body 41 and reduce the energy consumption required for the blade body 41 to rotate.

[0034] In some embodiments, the tool holder 42 includes a support plate 421, a mounting plate 422, a reinforcing plate 423, and a vertical plate 424. Multiple support plates 421 are parallel to each other and welded to the inner wall of the guide tube 2; all support plates 421 are detachably connected to the bottom surface of the support plate 421 by bolts, the vertical plate 424 is welded to the top surface of the support plate 421, and the tool body 41 is detachably connected to one side of the vertical plate 424 by multiple bolts. Multiple reinforcing plates 423 are parallel to each other and welded to the top surface of the mounting plate 422 and the other side of the vertical plate 424 away from the tool body 41. The tool holder 42 is constructed from multiple welded steel plates, which helps to reduce the weight of the tool holder 42 and reduce the energy consumption required for its rotation.

[0035] In some embodiments, the cutter body 41 includes an inner arc plate 411, an outer arc plate 412, a connecting end plate 413, an abutting end plate 414, a top plate 415, a bottom plate 416, and a web plate 417. The inner arc plate 411 and the outer arc plate 412 are welded to the top surface of the bottom plate 416, the top plate 415 is welded between the inner arc plate 411 and the outer arc plate 412, and the web plate 417 is located between the bottom plate 416 and the top plate 415 and welded between the inner arc plate 411 and the outer arc plate 412. The inner arc plate 411, the outer arc plate 412, the top plate 415, the bottom plate 416, and the web plate 417 are sealed and welded to form a crescent-shaped hollow structure. The connecting end plate 413 and the abutting end plate 414 are respectively sealed and welded to both ends of the crescent-shaped hollow structure. The connecting end plate 413 is connected to the cutter holder 42 by multiple bolts, and the abutting end plate 414 abuts against the side wall of the hopper 1. The web plate 417 is used to enhance the structural strength and bending resistance of the blade body 41. The top edges of the inner arc plate 411, the outer arc plate 412, the connecting end plate 413, and the abutting end plate 414 are all flush with the top surface of the top plate 415.

[0036] Furthermore, the top plate 415 is divided into two welded sections along its length, with a certain included angle between the two sections of the top plate 415 to accommodate the height variation of the top surface of the cutter body 41.

[0037] In some embodiments, the scraper unit 4 further includes a liner 418, which is attached to the inner wall of the blade body 41 and detachably connected to the blade body 41 by multiple bolts to protect the inner wall of the blade body 41 and reduce material wear on the blade body 41. The surface of the liner 418 is coated with a ceramic coating to further improve its wear resistance.

[0038] In some embodiments, the bottom surface of the blade body 41 is an inclined surface, the side of the bottom surface of the blade body 41 near the inner wall of the blade body 41 is the bottom edge, and the side of the bottom surface of the blade body 41 near the outer wall of the blade body 41 is the top edge.

[0039] When the inner wall of the cutter body 41 guides the material, the cutter body 41 is prone to tilting due to the material's action, causing excessive wear on the hopper 1 on the part of the bottom surface of the cutter body 41 near the outer wall. Raising the part of the bottom surface of the cutter body 41 near the outer wall helps reduce the possibility of the cutter body 41 tilting excessively due to the material's action, leading to severe wear on the hopper 1, and helps extend the service life of the self-cleaning anti-clogging vortex feeding device.

[0040] Furthermore, the height difference between the top edge and the bottom edge of the blade body 41 is less than or equal to 5mm, to prevent the part of the bottom surface of the blade body 41 near the outer wall of the blade body 41 from being raised excessively, and to ensure that the bottom surface of the blade body 41 can be stably supported on the hopper 1 during operation.

[0041] Furthermore, the surface roughness of the bottom surface of the cutter body 41 is greater than or equal to Ra12.5μm. During the rotation of the cutter body 41, it makes frictional contact with the hopper 1, which can achieve cleaning of the hopper 1.

[0042] In some embodiments, the self-cleaning anti-clogging vortex feeding device further includes a first sealing unit, which is used to rotate and seal the hopper 1 and the guide cylinder 2 to prevent material from escaping from the rotating connection between the hopper 1 and the guide cylinder 2.

[0043] In some embodiments, an installation groove is provided on the inner bottom surface of the hopper 1, and the first sealing unit includes a sealing plate 51. The sealing plate 51 is installed in the installation groove and matches the shape of the installation groove. The top surface of the sealing plate 51 is flush with the inner bottom surface of the hopper 1, and the center of the sealing plate 51 has a discharge through hole aligned with the guide cylinder 2. An annular groove is provided on the bottom surface of the sealing plate 51, and the annular groove matches the guide cylinder 2 to form a labyrinth seal 54.

[0044] In some embodiments, the first sealing unit further includes a first sealing ring 52. A sealing groove is provided on the bottom wall of the mounting groove, and the first sealing ring 52 is located in the sealing groove. The first sealing ring 52 is in sealing contact with the outer walls of the sealing plate 51, the hopper 1, and the guide cylinder 2.

[0045] Furthermore, the first sealing ring 52 is made of PTFE packing.

[0046] In some embodiments, the first sealing unit further includes a second sealing ring 53. A positioning groove is provided on the outer bottom surface of the hopper 1, and the second sealing ring 53 is fixed in the positioning groove and sealed against the outer wall of the guide tube 2.

[0047] Furthermore, the second sealing ring 53 is made of PTFE packing.

[0048] In some embodiments, the drive device 3 includes a motor 31, a drive gear 32 and a driven gear 33. The driven gear 33 is connected to the guide tube 2, the drive gear 32 meshes with the driven gear 33, and the drive gear 32 is mounted on the output shaft of the motor 31.

[0049] Furthermore, multiple motors 31 are provided, and a drive gear 32 is installed on the output shaft of each motor 31. All drive gears 32 mesh with each other, and all motors 31 drive all drive gears 32 to drive the driven gear 33 to rotate at the same speed.

[0050] In some embodiments, the self-cleaning anti-clogging vortex feeding device further includes a discharge cylinder, a bearing 63, and a third sealing ring 64. Both the discharge cylinder and the bearing 63 are sleeved on the outside of the guide cylinder 2, and there is a gap between the discharge cylinder, the bearing 63, and the guide cylinder 2. A third sealing ring 64 is provided between the discharge cylinder and the guide cylinder 2 to achieve a rotational seal between them. The driven gear 33 and the discharge cylinder are rotatably connected via the bearing 63.

[0051] Furthermore, the third sealing ring 64 is a graphite ring.

[0052] In some embodiments, the discharge cylinder is divided into a discharge section 61 and a protective section 62 that are detachably connected. The inner side of the protective section 62 is provided with a protective groove for accommodating the bearing 63, the driving gear 32, and the driven gear 33. The top of the protective section 62 is sealed and welded to the bottom surface of the hopper 1. A limiting part 65 is provided on the inner side of both the discharge section 61 and the protective section 62. A third sealing ring 64 is clamped between the two limiting parts 65 and is in contact with the outer wall of the guide cylinder 2.

[0053] The discharge cylinder, guide cylinder 2, hopper 1, first sealing unit, and third sealing ring 64 together form a relatively sealed space to reduce the erosion of bearing 63, drive gear 32, and driven gear 33 by dust and moisture, and help extend the service life of bearing 63, drive gear 32, and driven gear 33.

[0054] In some embodiments, the walls of the protective trough, the side walls of the hopper 1, and the discharge cylinder are all provided with inspection windows, and the inspection windows are equipped with openable and closable inspection doors 7, which are provided with handles.

[0055] Furthermore, the inspection window is also equipped with an openable and closable transparent observation door, which is located inside the inspection door 7.

[0056] Furthermore, the transparent observation door is made of borosilicate glass.

[0057] In some embodiments, the protective section 62 is provided with a lubricating oil pipe 8 that penetrates the protective groove wall. The oil supply system outside the protective groove automatically supplies lubricating oil to the driven gear 33, the driving gear 32 and the bearing 63 through the lubricating oil pipe 8 based on an electrical signal, so as to ensure the normal operation of the bearing 63, the driving gear 32 and the driven gear 33.

[0058] Furthermore, the oil supply system delivers lubricating oil through the lubricating oil pipe 8 to the meshing points of the driven gear 33 and the driving gear 32, as well as to the bearing 63. The lubrication frequency of the meshing points of the driven gear 33 and the driving gear 32 and the bearing 63 may be the same or different.

[0059] In some embodiments, the self-cleaning anti-clogging vortex feeding device further includes a material distribution cone 91 and a material distribution beam 92; the material distribution cone 91 is located above the cutter body 41, the material distribution cone 91 is collinear with the axis of the guide cylinder 2, and the tip of the material distribution cone 91 is at the top to guide the material to flow along the cone surface of the material distribution cone 91; multiple material distribution beams 92 are evenly distributed around the material distribution pile, connecting the material distribution pile to the hopper 1; one end of the material distribution beam 92 is connected to the material distribution cone 91, and the other end is connected to the side wall of the hopper 1; the top of the material distribution beam 92 is pointed to guide the material to flow to both sides of the material distribution beam 92.

[0060] Furthermore, the length direction of the material distribution beam 92 is radial to that of the material distribution cone 91.

[0061] Through the description of several embodiments of the self-cleaning anti-clogging material vortex feeding device of the present invention, it can be seen that the embodiments of the self-cleaning anti-clogging material vortex feeding device of the present invention have at least one or more of the following advantages: 1. During the relative rotation of the blade body and the hopper sidewall, the concave sidewall of the blade body rotates towards the material. The blade body, utilizing its own elasticity, adjusts the pressure applied to the hopper sidewall based on the dynamic changes in the material, scraping away material adhering to the sidewall in real time and preventing material accumulation dead zones at the bottom of the hopper. Simultaneously, the elastic blade body can adjust the pressure applied to the material according to its dynamic changes, reducing the occurrence of "material blockage" and "material interruption," ensuring smooth material flow and reducing fluctuations in material flow.

[0062] 2. The change in the curvature of the inner wall of the blade helps guide the material along the guide tube on the inner wall of the blade during the rotation of the blade, ensuring smooth material flow, reducing the occurrence of "material interruption", and reducing the fluctuation range of material flow.

[0063] 3. The variation in the thickness and width of the blade body corresponds to the change in the function of the blade body from loosening accumulated materials through elastic deformation and scraping off materials adhering to the wall, to guiding and promoting the flow of materials. This gradually improves the structural strength and bending resistance of the blade body, disperses stress in various parts of the blade body, reduces the possibility of breakage at the end of the blade body closest to its own rotation axis, and improves the durability of the blade body.

[0064] 4. Raising the bottom surface of the cutter body near the outer wall of the cutter body helps reduce the possibility of the cutter body tilting excessively due to the action of materials, which could lead to severe wear of the hopper and help extend the service life of the self-cleaning anti-clogging vortex feeding device.

[0065] Finally, it should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0066] The above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of the present invention or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solutions of the present invention, and all such modifications and substitutions should be covered within the scope of the technical solutions claimed in the present invention.

Claims

1. A self-cleaning anti-blocking spiral feed device, characterized in that, The device comprises a hopper, a flow guide cylinder, a driving device and a scraper unit; the center of the hopper is provided with a mounting hole, the flow guide cylinder is rotationally connected with the inner wall of the mounting hole, the top edge of the flow guide cylinder is lower than or flush with the inner bottom surface of the hopper, and the driving device is used to drive the rotation of the flow guide cylinder. The scraper unit comprises a blade body and a blade holder; the blade holder is connected with the inner wall of the flow guide cylinder, the blade body is crescent-shaped and adheres to the inner bottom surface of the hopper, one end of the blade body is detachably connected with the blade holder, and the other end of the blade body elastically abuts against the side wall of the hopper; the projection line of the inner side wall of the blade body on the bottom surface of the hopper is tangent to the inner side wall of the flow guide cylinder; the width, thickness and inner side wall curvature of the blade body gradually increase from the end of the blade body elastically abutting against the side wall of the hopper to the other end of the blade body.

2. A self-cleaning anti-blocking screw conveyor according to claim 1, wherein, The blade body is of a hollow structure and is composed of multiple steel plates which are sealingly welded.

3. A self-cleaning anti-blocking screw conveyor according to claim 2, wherein, The blade body comprises an inner side arc plate, an outer side arc plate, a connecting end plate, an abutting end plate, a top plate, a bottom plate and a web plate; the inner side arc plate and the outer side arc plate are welded to the top surface of the bottom plate, the top plate is welded between the inner side arc plate and the outer side arc plate, and the web plate is located between the bottom plate and the top plate and is welded between the inner side arc plate and the outer side arc plate; the inner side arc plate, the outer side arc plate, the top plate, the bottom plate and the web plate are sealingly welded to form a crescent-shaped hollow structure, the connecting end plate and the abutting end plate are sealingly welded to the two ends of the crescent-shaped hollow structure respectively; the connecting end plate is connected with the blade holder through multiple bolts, and the abutting end plate abuts against the side wall of the hopper.

4. A self-cleaning anti-blocking spiral feed device according to any one of claims 1-3, characterized in that, The scraper unit further comprises a lining plate which is attached to the inner side wall of the blade body and is detachably connected to the blade body through multiple bolts; the surface of the lining plate is attached with a ceramic coating.

5. A self-cleaning anti-blocking screw conveyor according to any one of claims 1 to 3, wherein, The bottom surface of the blade body is beveled, the side edge of the bottom surface of the blade body close to the inner side wall of the blade body is a bottom edge, and the side edge of the bottom surface of the blade body close to the outer side wall of the blade body is a top edge; the height difference between the top edge and the bottom edge of the bottom surface of the blade body is less than or equal to 5mm; the roughness of the bottom surface of the blade body is greater than or equal to Ra12.5μm.

6. A self-cleaning anti-blocking screw conveyor according to any one of claims 1 to 3, wherein, The device further comprises a first sealing unit which is used to rotationally seal the hopper and the flow guide cylinder. The inner bottom surface of the hopper is provided with a mounting groove, and the first sealing unit comprises a sealing plate; the sealing plate is mounted in the mounting groove and matches the shape of the mounting groove, the center of the sealing plate is provided with a discharging hole which is aligned with the flow guide cylinder; the bottom surface of the sealing plate is provided with an annular groove which matches the flow guide cylinder to form a labyrinth seal.

7. A self-cleaning anti-blocking screw conveyor according to claim 6, wherein, The first sealing unit further comprises a first sealing ring and a second sealing ring; the bottom wall of the mounting groove is provided with a sealing groove, the first sealing ring is located in the sealing groove, and the first sealing ring is sealingly attached to the sealing plate, the hopper and the outer side wall of the flow guide cylinder; the outer bottom surface of the hopper is provided with a positioning groove, and the second sealing ring is fixed in the positioning groove and is sealingly attached to the outer side wall of the flow guide cylinder.

8. A self-cleaning anti-blocking screw conveyor according to any one of claims 1-3, characterized in that, The driving device comprises a motor, a driving gear and a driven gear; the driven gear is connected with the flow guide cylinder, the driving gear is engaged with the driven gear, and the driving gear is mounted on the output shaft of the motor.

9. A self-cleaning anti-blocking screw conveyor according to claim 8, wherein, The device further comprises a discharging cylinder, a bearing and a third sealing ring; the discharging cylinder and the bearing are both sleeved on the outer side of the flow guide cylinder, and there is a gap between the discharging cylinder and the flow guide cylinder and between the bearing and the flow guide cylinder; the third sealing ring is arranged between the discharging cylinder and the flow guide cylinder to rotationally seal the discharging cylinder and the flow guide cylinder; the driven gear and the discharging cylinder are rotationally connected through the bearing.

10. A self-cleaning anti-blocking screw conveyor according to claim 9, wherein, The discharge cylinder is divided into a discharge section and a protection section which are detachably connected; the protection section is internally provided with a protection groove for accommodating the bearing, the driving gear and the driven gear, and the top end of the protection section is sealingly welded with the bottom surface of the hopper; each of the discharge section and the protection section is internally provided with a limiting part, and the third sealing ring is clamped between the two limiting parts and is in close contact with the outer wall of the flow guide cylinder; the protection section is provided with a lubricating oil pipe penetrating through the wall of the protection groove, and the oil supply system outside the protection groove automatically delivers lubricating oil to the driven gear, the driving gear and the bearing through the lubricating oil pipe based on electric signals.

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