Bidirectional convection type particle material stirring machine with dead angle prevention structure

Abstract

The invention relates to the technical field of stirrers, in particular to a bidirectional convection type particle material stirrer with a dead angle prevention structure, which comprises a mixing conical barrel, a barrel cover is fixedly connected to the top of the mixing conical barrel, a mounting shell is arranged in the mixing conical barrel, and the top end of the mounting shell is rotatably connected to the axis of the barrel cover; rotating shafts are rotationally connected to the two ends of the bottom of the mounting shell, spiral stirring blades are fixedly connected to the surfaces of the rotating shafts, and the two spiral stirring blades are oppositely arranged in the mixing conical barrel; after the particle materials are lifted upwards through the spiral stirring blades, a recess generated by material missing is generated in the center of the mixing conical barrel, and the two strands of upwards-lifted particle materials converge towards the central recess of the materials under the action of gravity, so that the particle materials form all-directional convective circulation of'two-way rising-diffusion-falling 'in the mixing conical barrel; therefore, efficient mixing of the particle materials is realized.

Description

Technical Field

[0001] This invention relates to the field of mixer technology, and in particular to a bidirectional convection granular material mixer with a dead-angle-preventing structure. Background Technology

[0002] Material mixers are widely used in industries such as construction, chemicals, and food, primarily for uniformly mixing various raw materials. Their core function is to ensure thorough contact between materials through mechanical stirring, guaranteeing accurate proportions and stable mixing quality. This equipment effectively improves production efficiency and ensures consistent product quality, making it an indispensable key piece of equipment in modern production lines.

[0003] The patent document with publication number CN223490805U discloses a mixing device for lubricating oil base oil and additives, belonging to the technical field of lubricating oil raw material mixing. It includes a tank and a cover. The tank is equipped with a temperature regulating coil. A bidirectional stirring mechanism is provided at the central axis of the coil. The bidirectional stirring mechanism includes a first rotating shaft and a second rotating shaft. The rotation direction of the second rotating shaft is opposite to that of the first rotating shaft. Multiple stirring blades are provided on both the first and second rotating shafts.

[0004] In existing technologies, bidirectional mixing blades are typically used to mix materials in both directions and guide them to form convection. In the processing of cattle feed, energy feed, protein feed, and roughage need to be mixed into mixed feed pellets to improve the nutritional balance of the feed. When traditional mixing equipment mixes pellets, the mixing range of the mixing blades is relatively simple, which can easily create mixing dead zones and reduce the mixing effect of the materials. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a bidirectional convection particle material mixer with an anti-dead-angle structure.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a bidirectional convection granular material mixer with a dead angle prevention structure, comprising a mixing cone, a lid fixedly connected to the top of the mixing cone, an installation shell provided inside the mixing cone, the top of the installation shell being rotatably connected to the axis of the lid, and rotating shafts being rotatably connected to both ends of the bottom of the installation shell, with spiral stirring blades fixedly connected to the surface of each rotating shaft, and two spiral stirring blades being arranged opposite each other inside the mixing cone and parallel to the inclined inner wall of the mixing cone;

[0007] The barrel lid is equipped with a revolution component that drives the mounting shell to rotate and a rotation component that drives the two rotating shafts to rotate. The inside of the mixing cone is equipped with a conical ring, which is fixedly connected to the mounting shell and located between two spiral stirring blades. The inside of the conical ring is equipped with a conical shell. The mounting shell is equipped with a drive component, which drives the conical shell to rotate and generates a speed difference with the conical ring. At the same time, it drives the conical shell to generate vertical reciprocating movement during the rotation.

[0008] The top of the barrel lid is fixedly connected to multiple feed pipes, and the bottom of the mixing cone is fixedly connected to a discharge pipe, on which a discharge assembly is installed.

[0009] Preferably, the revolution assembly includes a fixed housing, which is fixedly connected to the top of the bucket lid. The top end of the mounting housing is located inside the fixed housing. A worm gear is fixedly connected to the top end of the mounting housing. A worm is rotatably connected inside the fixed housing, and the worm meshes with the worm gear. A first motor is fixedly mounted on the fixed housing, and the output shaft of the first motor is fixedly connected to one end of the worm.

[0010] Preferably, the self-rotating assembly includes a vertical shaft and two horizontal shafts, all of which are rotatably connected inside the mounting housing. A first conical wheel is fixedly connected to the bottom end of the vertical shaft. A second conical wheel is fixedly connected to the end of each of the two horizontal shafts near the vertical shaft, and both second conical wheels mesh with the first conical wheel. A third conical wheel is fixedly connected to the end of each of the two horizontal shafts away from the vertical shaft. A fourth conical wheel is fixedly connected to the top end of each of the two rotating shafts, and both fourth conical wheels mesh with their corresponding third conical wheels. A second motor is fixedly mounted on the top of the mounting housing, and the output shaft of the second motor is fixedly connected to the top end of the vertical shaft.

[0011] Preferably, the drive assembly includes a conical cover disposed above the conical housing. A circular shaft is fixedly connected to the top of the conical cover. The top end of the circular shaft passes through the mounting housing and extends into the interior of the mounting housing. A prismatic pin is fixedly connected to the bottom end of the vertical shaft. A prismatic hole is provided at the top end of the circular shaft. The bottom end of the prismatic pin is limited and inserted into the prismatic hole. A guide ring is fixedly connected to the interior of the mounting housing. An inclined annular groove is provided on the inner wall of the guide ring. An arc-shaped pin is fixedly connected to the circular shaft. One end of the arc-shaped pin is located inside the inclined annular groove. An elastic clearance assembly is provided between the conical cover and the conical housing.

[0012] Preferably, the elastic clearance component includes a plurality of first limiting pins, all of which are fixedly connected to the bottom of the conical cover and slidably inserted into the conical shell. Each of the first limiting pins is fitted with a first spring, which is fixedly connected between the conical shell and the conical cover. A sealing ring is fixedly connected to the bottom of the conical cover, and the top of the conical shell is located inside the sealing ring.

[0013] Preferably, the conical shell has multiple material-pulling plates inside, one side of each material-pulling plate penetrates the conical shell and contacts and fits against the inner wall of the conical ring. A fixed ring is fixedly connected inside the conical shell. Two second limiting pins are fixedly connected to each material-pulling plate. The second limiting pins are slidably inserted into the fixed ring. A second spring is sleeved on the second limiting pin. The second spring is fixedly connected between the fixed ring and the corresponding material-pulling plate.

[0014] Preferably, two scraper strips are arranged circumferentially inside the mixing cone. The scraper strips slide against the inner wall of the mixing cone, and both scraper strips are fixedly connected to the mounting housing.

[0015] Preferably, a support frame is provided below the mixing cone, and two mounting shafts are fixedly connected to the surface of the mixing cone in the circumferential direction. Both mounting shafts are rotatably connected to the support frame, and a swinging component for driving the mixing cone to swing is provided on the support frame.

[0016] Preferably, the oscillating component includes a sector gear, which is fixedly connected to one of the mounting shafts. A third motor is fixedly mounted on the support frame, and a drive gear is fixedly connected to the output shaft of the third motor. The drive gear meshes with the sector gear.

[0017] Preferably, the discharge assembly includes a butterfly valve, which is rotatably connected inside the discharge pipe. A swing hydraulic cylinder is fixedly installed on the discharge pipe, and the piston shaft of the swing hydraulic cylinder is fixedly connected to the rotatable connection of the butterfly valve.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. After the granular material is lifted upward by the spiral mixing blades, a depression is generated at the center of the mixing cone due to the lack of material. The two upward-lifting granular materials converge towards the central depression under the action of gravity, causing the two upward-lifting materials to converge and generate contact convection, improving the mixing effect of the granular material. This creates a "two-way upward-diffusion-falling" all-round convection cycle of granular material inside the mixing cone, thereby achieving efficient mixing of granular material.

[0020] 2. When the conical shell moves upward, the gap width between the conical ring and the conical shell increases; when the conical shell moves downward, the gap width between the conical ring and the conical shell decreases. Thus, through the continuous change in gap width, the material passing between the conical ring and the conical shell is reciprocated and crushed, reducing the agglomeration of particulate material and improving the degree of separation of particulate material. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the present invention;

[0022] Figure 2 For the present invention Figure 1 Enlarged schematic diagram of the structure at point A in the diagram;

[0023] Figure 3 This is a partial cross-sectional schematic diagram of the present invention (the mixing cone has been cut out).

[0024] Figure 4 For the present invention Figure 3 Enlarged schematic diagram of the structure at point B in the diagram;

[0025] Figure 5 This is a cross-sectional structural diagram of the present invention;

[0026] Figure 6 For the present invention Figure 5 Enlarged schematic diagram of the structure at point C;

[0027] Figure 7 For the present invention Figure 5 Enlarged schematic diagram of the structure at point D;

[0028] Figure 8 For the present invention Figure 5 Enlarged schematic diagram of the structure at point E in the diagram;

[0029] Figure 9 This is a schematic diagram of the mating structure of the conical ring, conical shell, and conical cover of the present invention;

[0030] Figure 10 For the present invention Figure 9 Enlarged schematic diagram of the structure at point F;

[0031] Figure 11 This is a schematic diagram of the mating structure of the conical shell and the feed plate of the present invention;

[0032] Figure 12 This is a schematic diagram of the guide ring structure of the present invention.

[0033] In the diagram: 1. Mixing cone; 2. Lid; 3. Mounting housing; 4. Rotating shaft; 5. Spiral stirring blade; 6. Conical ring; 7. Conical shell; 8. Feed pipe; 9. Discharge pipe; 10. Fixed housing; 11. Worm gear; 12. Worm; 13. First motor; 14. Vertical shaft; 15. Horizontal shaft; 16. First conical wheel; 17. Second conical wheel; 18. Third conical wheel; 19. Fourth conical wheel; 20. Second motor; 21. Conical baffle; 22. Circular... 23. Shaft; 24. Prism pin; 25. Prism hole; 26. Guide ring; 27. Inclined annular groove; 28. Arc pin; 29. ​​First limit pin; 30. First spring; 31. Sealing ring; 32. Feeding plate; 33. Fixing ring; 34. Second limit pin; 35. Second spring; 36. Scraper strip; 37. Support frame; 38. Mounting shaft; 39. Sector gear; 40. Third motor; 41. Drive gear; 42. Butterfly valve; 43. Swing hydraulic cylinder. Detailed Implementation

[0034] The following description is intended to disclose the invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0035] like Figures 1 to 12 The bidirectional convection granular material mixer with a dead-angle-proof structure shown includes a mixing cone 1, a lid 2 fixedly connected to the top of the mixing cone 1, and an installation housing 3 (such as...) inside the mixing cone 1. Figure 4 , Figure 6 and Figure 7 As shown), the top of the mounting housing 3 is rotatably connected to the axis of the bucket cover 2. Both ends of the bottom of the mounting housing 3 are rotatably connected to the rotating shaft 4. The surface of the rotating shaft 4 is fixedly connected to the spiral stirring blade 5. The two spiral stirring blades 5 are arranged opposite to each other inside the mixing cone 1 and are parallel to the inclined inner wall of the mixing cone 1.

[0036] The lid 2 is equipped with a revolution component that drives the mounting housing 3 to rotate and a rotation component that drives the two rotating shafts 4 to rotate. The inside of the mixing cone 1 is equipped with a conical ring 6, which is fixedly connected to the mounting housing 3 and located between the two spiral stirring blades 5. The inside of the conical ring 6 is equipped with a conical shell 7. The mounting housing 3 is equipped with a drive component, which drives the conical shell 7 to rotate and generate a speed difference with the conical ring 6. At the same time, the conical shell 7 is driven to reciprocate vertically during the rotation.

[0037] Multiple feed pipes 8 are fixedly connected to the top of the barrel lid 2, and a discharge pipe 9 is fixedly connected to the bottom of the mixing cone 1. A discharge assembly is provided on the discharge pipe 9.

[0038] Multiple granular materials requiring mixing are conveyed into the mixing cone 1 through different feed pipes 8. The mounting housing 3 is driven to rotate around the axis of the cover 2 by the revolution component, which in turn drives the two rotating shafts 4 to revolve inside the mixing cone 1. At the same time, the two rotating shafts 4 are driven to rotate by the self-rotation component, which drives the corresponding spiral stirring blades 5 to rotate. When the two spiral stirring blades 5 rotate, the spiral stirring blades 5 guide the granular materials upward to form two upward spiral material flows. At the same time, they slowly revolve inside the mixing cone 1, so that the granular materials near the inner wall of the mixing cone 1 can contact the spiral stirring blades 5 and be conveyed upward, preventing the formation of mixing dead zones on the inner wall of the mixing cone 1.

[0039] After the granular material is lifted upward by the spiral stirring blade 5, a depression is generated at the center of the mixing cone 1 due to the lack of material. The two upward-lifting granular materials converge towards the central depression under the action of gravity, so that the two lifting materials converge and generate contact convection, which improves the mixing effect of the granular material. This allows the granular material to form a "two-way rising-diffusion-falling" all-round convection cycle inside the mixing cone 1, thereby achieving efficient mixing of the granular material.

[0040] As the lifted granular material moves towards the central depression, it moves downward at the center and enters the space between the conical ring 6 and the conical shell 7 through the opening at the top of the conical ring 6. The conical ring 6 rotates synchronously with the mounting shell 3, while the conical shell 7 rotates differentially with the conical ring 6 through the action of the drive component. During the rotation, the conical shell 7 continuously reciprocates vertically. When the conical shell 7 moves upward, the gap width between the conical ring 6 and the conical shell 7 increases; when the conical shell 7 moves downward, the gap width between the conical ring 6 and the conical shell 7 decreases. Thus, through the continuous change in the gap width, the material passing between the conical ring 6 and the conical shell 7 is reciprocated and crushed, reducing the agglomeration of granular material and improving the degree of separation of granular material.

[0041] As a further embodiment of the present invention, the revolution assembly includes a fixed housing 10, which is fixedly connected to the top of the bucket lid 2. The top end of the mounting housing 3 is located inside the fixed housing 10. A worm gear 11 is fixedly connected to the top end of the mounting housing 3. A worm 12 is rotatably connected inside the fixed housing 10. The worm 12 meshes with the worm gear 11. A first motor 13 is fixedly mounted on the fixed housing 10. The output shaft of the first motor 13 is fixedly connected to one end of the worm 12.

[0042] The output shaft of the first motor 13 rotates, driving the worm gear 12 to rotate synchronously. The worm gear 12 meshes with the worm wheel 11, causing the worm wheel 11 to rotate. The worm wheel 11 is fixedly connected to the top of the mounting housing 3, causing the mounting housing 3 to rotate along the rotating connection of the bucket cover 2.

[0043] As a further embodiment of the present invention, the self-rotating assembly includes a vertical shaft 14 and two horizontal shafts 15. The vertical shaft 14 and the two horizontal shafts 15 are rotatably connected inside the mounting housing 3. A first conical wheel 16 is fixedly connected to the bottom end of the vertical shaft 14. A second conical wheel 17 is fixedly connected to the end of each of the two horizontal shafts 15 near the vertical shaft 14. The two second conical wheels 17 mesh with the first conical wheel 16. A third conical wheel 18 is fixedly connected to the end of each of the two horizontal shafts 15 away from the vertical shaft 14. A fourth conical wheel 19 is fixedly connected to the top end of each of the two rotating shafts 4. The two fourth conical wheels 19 mesh with the corresponding third conical wheels 18. A second motor 20 is fixedly mounted on the top of the fixed housing 10. The output shaft of the second motor 20 is fixedly connected to the top end of the vertical shaft 14.

[0044] The output shaft of the second motor 20 rotates, driving the vertical shaft 14 and the first cone wheel 16 to rotate. Through the meshing of the first cone wheel 16 and the two second cone wheels 17, the two horizontal shafts 15 drive the corresponding third cone wheels 18 to rotate synchronously. Through the meshing of the third cone wheel 18 and the fourth cone wheel 19, the two rotating shafts 4 rotate along the rotating connection of the mounting housing 3, and drive the corresponding spiral stirring blades 5 to rotate.

[0045] By utilizing the speed difference between the first motor 13 and the second motor 20, the rotational speed of the rotating shaft 4 is made greater than the revolution speed of the mounting housing 3, thereby achieving rapid lifting of granular materials and slow revolution of the spiral stirring blade 5.

[0046] As a further embodiment of the present invention, the drive assembly includes a conical cover 21, which is disposed above the conical housing 7. A circular shaft 22 is fixedly connected to the top of the conical cover 21. The top end of the circular shaft 22 passes through the mounting housing 3 and extends into the interior of the mounting housing 3. A prismatic pin 23 is fixedly connected to the bottom end of the vertical shaft 14. A prismatic insertion hole 24 is provided at the top end of the circular shaft 22. The bottom end of the prismatic pin 23 is limited and inserted into the interior of the prismatic insertion hole 24. A guide ring 25 is fixedly connected to the interior of the mounting housing 3. An inclined annular groove 26 is provided on the inner wall of the guide ring 25. An arc-shaped pin 27 is fixedly connected to the circular shaft 22. One end of the arc-shaped pin 27 is located inside the inclined annular groove 26. An elastic clearance assembly is provided between the conical cover 21 and the conical housing 7.

[0047] The conical ring 6 rotates synchronously with the mounting housing 3. A prismatic pin 23 is inserted into the prismatic insertion hole 24 at the top of the circular shaft 22. When the vertical shaft 14 rotates, the prismatic pin 23 limits the prismatic insertion hole 24, causing the circular shaft 22 to rotate synchronously, thereby causing the conical cover 21 to rotate. During the rotation of the circular shaft 22, one end of the arc-shaped pin 27 on the circular shaft 22 moves along the inside of the inclined annular groove 26. Guided by the inclined closed loop of the inclined annular groove 26, the circular shaft 22 reciprocates axially during rotation, causing the conical cover 21 and the conical housing 7 to move, thus lifting the particles. The material moves towards the central depression and accumulates on the top of the conical baffle 21 along the opening at the top of the conical ring 6. When the conical baffle 21 is lifted upward, the gap width between the conical shell 7 and the conical ring 6 increases. The accumulated material slides downward along the inclined surface at the top of the conical baffle 21 and enters the space between the conical ring 6 and the conical shell 7. When the conical baffle 21 moves the conical shell 7 downward, the gap width between the conical ring 6 and the conical shell 7 decreases, thereby squeezing the granular material between the conical ring 6 and the conical shell 7, dispersing the agglomerated granular material under pressure, and improving the uniformity of the granular material.

[0048] As a further embodiment of the present invention, the elastic clearance component includes a plurality of first limiting pins 28, all of which are fixedly connected to the bottom of the conical cover 21 and slidably inserted into the conical shell 7. Each of the first limiting pins 28 is fitted with a first spring 29, which is fixedly connected between the conical shell 7 and the conical cover 21. A sealing ring 30 is fixedly connected to the bottom of the conical cover 21, and the top of the conical shell 7 is located inside the sealing ring 30.

[0049] When the conical baffle 21 moves the conical shell 7 downward, the gap between the conical shell 7 and the conical ring 6 decreases, thereby squeezing the particulate material between the conical ring 6 and the conical shell 7. When there is too much particulate material in the gap or there is rigid material that is difficult to squeeze, the conical shell 7 makes room along the sliding insertion of the first limiting pin 28 and squeezes the first spring 29 to generate compression, so that the conical shell 7 and the conical baffle 21 are relatively close, thereby reducing the probability of equipment damage. When the conical shell 7 and the conical baffle 21 have relative displacement, the top of the conical shell 7 always moves inside the sealing ring 30 to prevent particulate material from entering between the conical shell 7 and the conical baffle 21 and occupying the clearance space.

[0050] As a further embodiment of the present invention, the conical shell 7 is provided with a plurality of material-pulling plates 31 (in conjunction with...). Figure 4 and Figure 8One side of each of the multiple material-pulling plates 31 penetrates the conical shell 7 and contacts and fits against the inner wall of the conical ring 6. A fixed ring 32 is fixedly connected inside the conical shell 7. Two second limiting pins 33 are fixedly connected to each of the material-pulling plates 31. The second limiting pins 33 are slidably inserted into the fixed ring 32. A second spring 34 is sleeved on the second limiting pin 33. The second spring 34 is fixedly connected between the fixed ring 32 and the corresponding material-pulling plate 31.

[0051] When the conical shell 7 rotates and reciprocates vertically, multiple extended material-pushing plates 31 move synchronously with the conical shell 7 and continue to stir the granular material at the center of the mixing cone 1. When the conical shell 7 moves downward and approaches the conical ring 6, the outer side of the conical shell 7 squeezes the granular material. One side of the multiple material-pushing plates 31 moves into the conical shell 7 through contact squeezing and squeezes the second spring 34 to produce compression deformation, thereby allowing the material-pushing plates 31 to elastically give way and reduce the impact of the material-pushing plates 31 on the material squeezing.

[0052] As a further embodiment of the present invention, two scraper strips 35 are arranged circumferentially inside the mixing cone 1. The scraper strips 35 slide against the inner wall of the mixing cone 1, and the scraper strips 35 are fixedly connected to the mounting housing 3.

[0053] When the mounting housing 3 revolves and drives the two spiral stirring blades 5 to rotate, the two scraper strips 35 rotate synchronously with the mounting housing 3 and circulate scraping the inner wall of the mixing cone 1 to reduce the adhesion of particulate material to the inner wall of the mixing cone 1.

[0054] As a further embodiment of the present invention, a support frame 36 is provided below the mixing cone 1, and two mounting shafts 37 are fixedly connected to the surface of the mixing cone 1 in the circumferential direction. Both mounting shafts 37 are rotatably connected to the support frame 36, and a swinging component for driving the mixing cone 1 to swing is provided on the support frame 36.

[0055] The mixing cone 1 is driven by the oscillating component to oscillate along the rotational connection of the mounting shaft 37, so that the particulate material changes angle synchronously with the mixing cone 1 and participates in the mixing process of the particulate material from different directions, thereby further improving the uniformity of the particulate material mixing.

[0056] As a further embodiment of the present invention, the swing assembly includes a sector gear 38, which is fixedly connected to one of the mounting shafts 37. A third motor 39 is fixedly mounted on the support frame 36, and a drive gear 40 is fixedly connected to the output shaft of the third motor 39. The drive gear 40 meshes with the sector gear 38.

[0057] The output shaft of the third motor 39 drives the drive gear 40 to rotate intermittently in both directions. Through the meshing of the drive gear 40 and the sector gear 38, the sector gear 38 drives the corresponding mounting shaft 37 to rotate bidirectionally at a certain angle, thereby driving the mixing cone 1 to swing bidirectionally.

[0058] As a further embodiment of the present invention, the discharge assembly includes a butterfly valve 41, which is rotatably connected inside the discharge pipe 9 (e.g., Figure 3 As shown), a swing hydraulic cylinder 42 is fixedly installed on the discharge pipe 9, and the piston shaft of the swing hydraulic cylinder 42 is fixedly connected to the rotation connection of the butterfly valve 41.

[0059] The piston shaft of the swing hydraulic cylinder 42 drives the butterfly valve 41 to flip, thereby opening the opening of the discharge pipe 9 and allowing the mixed granular material to be discharged along the discharge pipe 9.

[0060] 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 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 claims. The scope of protection claimed by the appended claims and their equivalents is defined.

Claims

1. A bidirectional convection granular material mixer with a dead-angle-prevention structure, comprising a mixing cone (1), characterized in that, A bucket cover (2) is fixedly connected to the top of the mixing cone (1). An installation shell (3) is provided inside the mixing cone (1). The top of the installation shell (3) is rotatably connected to the axis of the bucket cover (2). Rotating shafts (4) are rotatably connected to both ends of the bottom of the installation shell (3). Spiral stirring blades (5) are fixedly connected to the surface of the rotating shafts (4). The two spiral stirring blades (5) are arranged opposite to each other inside the mixing cone (1) and are parallel to the inclined inner wall of the mixing cone (1). The lid (2) is provided with a revolution component that drives the mounting housing (3) to rotate and a rotation component that drives the two rotating shafts (4) to rotate. The mixing cone (1) is provided with a conical ring (6). The conical ring (6) is fixedly connected to the mounting housing (3) and located between the two spiral stirring blades (5). The conical ring (6) is provided with a conical shell (7). The mounting housing (3) is provided with a drive component. The drive component drives the conical shell (7) to rotate and generates a speed difference with the conical ring (6). At the same time, the conical shell (7) is driven to generate vertical reciprocating movement during the rotation. The top of the bucket lid (2) is fixedly connected to multiple feed pipes (8), and the bottom of the mixing cone (1) is fixedly connected to a discharge pipe (9), on which a discharge assembly is provided; The orbital assembly includes a fixed housing (10), which is fixedly connected to the top of the bucket lid (2). The top of the mounting housing (3) is located inside the fixed housing (10). The rotational assembly includes a vertical shaft (14) and two horizontal shafts (15), which are rotatably connected inside the mounting housing (3). The drive assembly includes a conical cover (21), which is located above the conical housing (7). A circular shaft (22) is fixedly connected to the top of the conical cover (21). The top of the circular shaft (22) passes through the mounting housing (3) and extends into the interior of the mounting housing (3). A prismatic pin (23) is fixedly connected to the bottom of the vertical shaft (14). A prismatic insertion hole (24) is opened at the top of the circular shaft (22). The bottom of the prismatic pin (23) is limited and inserted into the interior of the prismatic insertion hole (24). A guide ring (25) is fixedly connected inside the mounting housing (3). An inclined annular groove (26) is opened on the inner wall of the guide ring (25). An arc-shaped pin (27) is fixedly connected to the circular shaft (22). One end of the arc-shaped pin (27) is located inside the inclined annular groove (26). An elastic clearance assembly is provided between the conical cover (21) and the conical housing (7).

2. The bidirectional convection granular material mixer with an anti-dead-angle structure according to claim 1, characterized in that, A worm gear (11) is fixedly connected to the top of the mounting housing (3), and a worm (12) is rotatably connected inside the fixed housing (10). The worm (12) meshes with the worm gear (11). A first motor (13) is fixedly installed on the fixed housing (10), and the output shaft of the first motor (13) is fixedly connected to one end of the worm (12).

3. A bidirectional convection granular material mixer with an anti-dead-angle structure according to claim 2, characterized in that, The bottom end of the vertical shaft (14) is fixedly connected to a first conical wheel (16). The ends of the two horizontal shafts (15) near the vertical shaft (14) are fixedly connected to second conical wheels (17). The two second conical wheels (17) mesh with the first conical wheel (16). The ends of the two horizontal shafts (15) away from the vertical shaft (14) are fixedly connected to third conical wheels (18). The top ends of the two rotating shafts (4) are fixedly connected to fourth conical wheels (19). The two fourth conical wheels (19) mesh with the corresponding third conical wheels (18). The top of the fixed housing (10) is fixedly installed with a second motor (20). The output shaft of the second motor (20) is fixedly connected to the top end of the vertical shaft (14).

4. A bidirectional convection granular material mixer with an anti-dead-angle structure according to claim 1, characterized in that, The elastic clearance component includes multiple first limiting pins (28), all of which are fixedly connected to the bottom of the conical cover (21). All of the first limiting pins (28) are slidably inserted into the conical shell (7). Each first limiting pin (28) is fitted with a first spring (29). The first spring (29) is fixedly connected between the conical shell (7) and the conical cover (21). A sealing ring (30) is fixedly connected to the bottom of the conical cover (21), and the top of the conical shell (7) is located inside the sealing ring (30).

5. A bidirectional convection granular material mixer with an anti-dead-angle structure according to claim 1, characterized in that, The conical shell (7) is provided with multiple material-pulling plates (31). One side of each material-pulling plate (31) penetrates the conical shell (7) and contacts and fits against the inner wall of the conical ring (6). A fixed ring (32) is fixedly connected inside the conical shell (7). Two second limiting pins (33) are fixedly connected to each material-pulling plate (31). The second limiting pins (33) are slidably inserted into the fixed ring (32). A second spring (34) is sleeved on the second limiting pin (33). The second spring (34) is fixedly connected between the fixed ring (32) and the corresponding material-pulling plate (31).

6. A bidirectional convection granular material mixer with an anti-dead-angle structure according to claim 1, characterized in that, Two scraper strips (35) are arranged circumferentially inside the mixing cone (1). The scraper strips (35) slide against the inner wall of the mixing cone (1). The scraper strips (35) are fixedly connected to the mounting housing (3).

7. A bidirectional convection granular material mixer with an anti-dead-angle structure according to claim 1, characterized in that, A support frame (36) is provided below the mixing cone (1). Two mounting shafts (37) are fixedly connected to the surface of the mixing cone (1) along the circumferential direction. Both mounting shafts (37) are rotatably connected to the support frame (36). A swing assembly for driving the mixing cone (1) to swing is provided on the support frame (36).

8. A bidirectional convection granular material mixer with an anti-dead-angle structure according to claim 7, characterized in that, The oscillating assembly includes a sector gear (38), which is fixedly connected to one of the mounting shafts (37). A third motor (39) is fixedly mounted on the support frame (36). A drive gear (40) is fixedly connected to the output shaft of the third motor (39). The drive gear (40) meshes with the sector gear (38).

9. A bidirectional convection granular material mixer with an anti-dead-angle structure according to claim 1, characterized in that, The discharge assembly includes a butterfly valve (41), which is rotatably connected inside the discharge pipe (9). A swing hydraulic cylinder (42) is fixedly installed on the discharge pipe (9), and the piston shaft of the swing hydraulic cylinder (42) is fixedly connected to the rotatable connection of the butterfly valve (41).

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