Spiral conveying apparatus and method for alumina powder

Abstract

The present application relates to conveying equipment technical field, specifically speaking is used for alumina powder spiral conveying equipment and conveying method, it can realize spiral conveying, conveying operation is completed by means of spiral elastic pipe, the spiral elastic pipe has inside and outside closed structure, the sealing property of guaranteeing conveying process, while the spiral elastic pipe can adjust conveying path, can adapt to multiple conveying distance, the practicality is stronger, including adjusting support assembly, spiral conveying equipment and main body frame, the main body frame is slidably connected with moving frame, the servo motor is installed in the main body frame, the adjusting support assembly includes fixed outer tube and moving outer tube, the fixed outer tube and moving outer tube are rotatably connected in the main body frame and moving frame respectively, the fixed inner tube and moving inner tube are fixedly installed in the fixed outer tube and moving outer tube respectively, the fixed inner tube and moving inner tube are slidably connected with each other, a plurality of linkage rope rings are installed on the structure combined by the fixed inner tube and moving inner tube, and a control motor is installed in the fixed inner tube.

Description

Technical Field

[0001] This invention relates to the field of conveying equipment technology, specifically to a screw conveying device and method for alumina powder. Background Technology

[0002] As is well known, alumina powder is aluminum oxide powder, which has various crystal forms and features high hardness and high temperature resistance. It is widely used in refractories, ceramics, abrasives, electronics and new energy fields. Alumina powder screw conveyor equipment is a closed quantitative conveying equipment for alumina powder in ceramics, refractories or new energy production lines.

[0003] A search revealed that Chinese Patent Publication No. CN224046231U discloses a screw conveyor for feed processing, which is roughly described as including a support frame, a mounting shell, a motor, a rotating rod, a mounting rod, a screening barrel, and screening holes. The mounting shell is fixedly connected to the top of the support frame. The motor is located on the outer left side of the mounting shell. The rotating rod is rotatably connected to the inside of the mounting shell. The outer left side of the rotating rod is fixedly connected to the output end of the motor. The mounting rod is fixedly connected to the top right side of the rotating rod. The screening barrel is fixedly connected to the top of the mounting rod. Screening holes are opened around the inside of the screening barrel. Chinese Patent Publication No. CN224740218U discloses a raw material meter for lightweight wall material production. The conveying dust removal device is generally described as follows: a base, a weighing sensor fixedly connected to the top of the base, a storage hopper placed on top of the weighing sensor, a valve located at the bottom of the storage hopper, a screw conveyor fixedly connected to the top of the base, a feed inlet fixedly connected to the top of the screw conveyor, a discharge inlet fixedly connected to the bottom of the screw conveyor, a baffle fixedly connected inside the base, and a fan fixedly connected to the surface of the baffle. During operation, the weighing sensor monitors the weight of the raw materials in the storage hopper in real time. The vibrating motor prevents the raw materials from remaining on the guide plate and thus preventing them from entering the screw conveyor. The fan separates dust from the raw materials, and the collection frame collects the dust in a concentrated manner.

[0004] While the aforementioned existing technical solutions can provide conveying functionality, the former mainly consists of a conveying pipe, a transmission rod, and auger conveying blades. Based on this structure, it's clear that the conveying action is achieved by the internal transmission rod and auger conveying blades rotating relative to the external conveying pipe. Therefore, the conveying effect is related to the gap between the auger conveying blades and the conveying pipe. If the gap is too small, alumina powder may get stuck, causing material jamming or equipment wear. If the gap is too large, material leakage is likely during conveying, leading to a reduction in conveying efficiency. For the latter, the internal structure of the screw conveyor in the solution is not specifically described, therefore the completeness of this solution needs further improvement. Summary of the Invention

[0005] To address the problems in the prior art, this invention provides a spiral conveying device and method for alumina powder, which can form a spiral conveying mechanism for alumina powder. The conveying operation is completed by means of a spiral elastic tube, which has an internal and external closed structure to ensure the sealing of the conveying process. At the same time, the spiral elastic tube can adjust the conveying path and can be adapted to various conveying distances, making it more practical.

[0006] The technical solution adopted by this invention to solve its technical problem is as follows: a screw conveyor for alumina powder, comprising an adjusting support assembly, a screw conveyor, and a main frame. A movable frame is slidably connected to the main frame, and a servo motor is installed inside the main frame. The adjusting support assembly includes a fixed outer cylinder and a movable outer cylinder, which are rotatably connected to the main frame and the movable frame, respectively. A fixed inner cylinder and a movable inner cylinder are fixedly installed inside the fixed outer cylinder and the movable outer cylinder, respectively. The fixed inner cylinder and the movable inner cylinder are slidably connected to each other. Multiple linkage rope rings are installed on the structure formed by the fixed inner cylinder and the movable inner cylinder. A control motor is installed inside the fixed inner cylinder. The control motor is used to adjust the position of the movable inner cylinder relative to the fixed inner cylinder. The servo motor is used to drive the fixed outer cylinder to rotate. The screw conveyor includes two spiral elastic tubes, both of which are spirally arranged outside the multiple linkage rope rings. One end of each spiral elastic tube is fixedly connected to a feed pipe, and the other end of each spiral elastic tube is fixedly connected to a discharge pipe.

[0007] Specifically, multiple fixed columns are fixedly connected between the fixed inner cylinder and the fixed outer cylinder, and multiple movable columns are fixedly connected between the movable inner cylinder and the movable outer cylinder. Adjusting frames are slidably connected to each of the multiple fixed columns and multiple movable columns. Multiple elastic support springs are connected to the outside of both the fixed inner cylinder and the movable inner cylinder. The multiple elastic support springs are respectively connected to the multiple adjusting frames. Two guide tubes are fitted onto each of the multiple linkage rope rings. The multiple guide tubes are respectively fixedly connected to the multiple adjusting frames.

[0008] Specifically, each of the multiple adjustment frames is provided with a guide groove, which is matched with a number of fixed columns and multiple movable columns respectively. Each of the multiple adjustment frames is fixedly connected with a pressing frame, which is matched with a number of fixed columns and multiple movable columns respectively.

[0009] Specifically, each of the multiple adjustment frames has a stepped hole, and each of the multiple stepped holes has a support sleeve that slides in. Each of the multiple support sleeves is fixedly connected to a multiple of the multiple elastic support springs. Each of the multiple stepped holes has a threaded post that is rotatably connected to a multiple of the multiple support sleeves.

[0010] Specifically, a plurality of fixed columns are rotatably mounted with synchronous gears, a plurality of movable columns are rotatably mounted with linkage gears, a plurality of fixed columns are fixedly connected to fixed pressure frames, a plurality of fixed pressure frames are matched with synchronous gears, a plurality of movable columns are fixedly connected to movable pressure frames, a plurality of movable pressure frames are matched with linkage gears, a limit pin is inserted into one of the fixed pressure frames and one of the movable pressure frames, a limit spring is fixedly connected to both the fixed pressure frame and the movable pressure frame, two limit springs are respectively connected to two limit pins, the two limit pins are respectively matched with synchronous gears and linkage gears, the synchronous gears and linkage gears are meshed and driven by a plurality of transmission gears, a plurality of fixed columns and a plurality of movable columns are rotatably connected to transmission shafts, a plurality of transmission shafts are respectively fixedly connected to a plurality of threaded columns, and a plurality of transmission gears are respectively fixedly connected to a plurality of transmission shafts.

[0011] Specifically, two feeding hoppers are fixedly connected to the outside of the main frame. Both feeding hoppers are fixedly connected to an outer ring. Both outer rings are fixedly connected to the main frame. Both outer rings are rotatably connected to a sealing ring. Both sealing rings are fixedly connected to a guide pipe. The two guide pipes are respectively connected to the two feed pipes.

[0012] Specifically, each of the multiple linkage rope loops is provided with an open section, and each of the multiple openings is fixedly connected with a fine-adjustment spring. Each of the multiple linkage rope loops is fitted with a fixed inner guide tube and a movable inner guide tube. Each of the multiple fixed inner guide tubes is fixedly connected inside the fixed inner cylinder, and each of the multiple movable inner guide tubes is fixedly connected inside the movable inner cylinder.

[0013] Specifically, an internally threaded cylinder is driven to the output shaft of the control motor, and a threaded rod is internally threaded to the internally threaded cylinder, with the threaded rod fixedly connected inside the movable inner cylinder.

[0014] Specifically, the two discharge pipes are of different lengths, and the movable frame is fixedly connected to a cantilever frame. The cantilever frame is fixedly connected to a quick-connect inclined pipe and a quick-connect bend pipe. The quick-connect inclined pipe is connected to the longer discharge pipe, and the quick-connect bend pipe is connected to the other discharge pipe.

[0015] A conveying method for an alumina powder screw conveyor includes the following steps: S1. Install the entire equipment in the alumina powder conveying operation area, install and check the circuits of the servo motor and the control motor. According to the conveying operation requirements, drive the moving inner cylinder to shift its position relative to the fixed inner cylinder by controlling the motor. With the linkage adjustment of multiple linkage rope rings, drive the moving frame to form a sliding fine adjustment relative to the main frame, and simultaneously adjust the shape of the outer spiral elastic tube to adapt to the conveying conditions of alumina powder on site. S2. After adjustment, lock the control motor to fix the shape and size of the overall conveying structure. The servo motor drives the fixed outer cylinder to rotate, which in turn drives the moving outer cylinder and the linkage rope ring to rotate at a uniform speed, so that the two spiral elastic tubes sleeved on the outside of the linkage rope ring synchronously form a stable spiral conveying channel. S3. Start the feeding process. Alumina powder enters the interior of two spiral elastic tubes through two feeding pipes respectively. Relying on the spiral rotation structure of the spiral elastic tubes, the material is driven to spirally advance along the tube body and is discharged into the corresponding connected discharge pipe after passing through the spiral elastic tubes completely. S4. After the alumina powder conveying operation is completed, stop feeding alumina powder into the feed pipe, continue running the servo motor for a period of time to completely push the alumina powder remaining inside the spiral elastic tube to the discharge pipe. After the remaining material is cleared, turn off the servo motor to complete a single alumina powder spiral conveying operation.

[0016] The beneficial effects of this invention are: (1) The screw conveying equipment and conveying method for alumina powder described in this invention forms a support structure for two spiral elastic tubes by adjusting the configuration of the support components, and can coordinately adjust the inner diameter and overall length of the two spiral elastic tubes to adapt to various conveying distances.

[0017] (2) The screw conveying equipment and conveying method for alumina powder described in this invention, through the design of the screw conveying equipment, forms an execution structure for screw conveying with alumina powder, and the conveying operation is realized through a screw elastic tube, which has a good internal and external sealing effect and ensures the sealing of the conveying. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 This is a three-dimensional structural diagram of the entire invention; Figure 2 For the present invention Figure 1 A magnified schematic diagram of the local structure at point A; Figure 3 For the present invention Figure 1 A magnified view of the structure at point B in the middle; Figure 4 This is a three-dimensional structural diagram of the fixed outer cylinder, movable inner cylinder, and linkage rope ring of the present invention. Figure 5 For the present invention Figure 4 A magnified schematic diagram of the local structure at point C; Figure 6 This is a three-dimensional structural diagram of the movable frame, quick-connect inclined tube, and quick-connect bent tube of the present invention. Figure 7 This is a three-dimensional structural diagram of the spiral elastic tube, feed tube, and discharge tube of the present invention. Figure 8 This is a three-dimensional structural diagram of another set of spiral elastic tubes, feed tubes, and discharge tubes of the present invention. Figure 9 This is a three-dimensional structural diagram of the interaction between the movable column, guide cylinder, and synchronous gear of the present invention; Figure 10 This is a three-dimensional structural diagram showing the disassembled assembly of the movable column, fixed pressure frame, and limiting pin of the present invention. Figure 11 This is a three-dimensional structural diagram showing the disassembled components of the guide sleeve, support sleeve, and drive shaft of the present invention. Figure 12 This is a three-dimensional structural schematic diagram of the fixed inner cylinder, the movable inner cylinder, and the control motor of the present invention, partially cut apart. Figure 13 This is a three-dimensional structural diagram of the linkage rope loop and the fine-tuning spring of the present invention. Figure 14 This is a three-dimensional structural diagram of the invention viewed from below. Figure 15 For the present invention Figure 14 A magnified schematic diagram of the local structure at point D; Figure 16 This is a three-dimensional structural diagram of the main frame, movable frame, and movable inner cylinder of the present invention, viewed from below. Figure 17 This is a bottom-view three-dimensional structural diagram showing the cooperation of the main frame, movable frame, and outer ring of the present invention; Figure 18 This is a three-dimensional structural diagram showing the disassembled assembly of the guide tube, support sleeve, and threaded column of the present invention. Figure 19 This is a three-dimensional structural diagram of the elastic support spring, guide cylinder, and press-fitting frame of the present invention. Figure 20 This is a three-dimensional structural diagram of the spiral elastic tube, feed tube, and discharge tube of the present invention, taken from another angle. Figure 21 This is a three-dimensional structural diagram showing the disassembled arrangement of the movable column, fixed pressure frame, and limiting pin of the present invention.

[0020] In the diagram: 1. Main frame; 2. Moving frame; 3. Servo motor; 4. Fixed outer cylinder; 5. Moving outer cylinder; 6. Fixed inner cylinder; 7. Moving inner cylinder; 8. Linkage rope ring; 9. Control motor; 10. Spiral elastic tube; 11. Feed pipe; 12. Discharge pipe; 13. Fixed column; 14. Moving column; 15. Adjusting frame; 16. Elastic support spring; 17. Guide cylinder; 18. Guide groove; 19. Pressing frame; 20. Support sleeve; 21. 21. Threaded column; 22. Synchronous gear; 23. Linkage gear; 24. Fixed pressure frame; 25. Moving pressure frame; 26. Limiting pin; 27. Limiting spring; 28. Transmission gear; 29. ​​Transmission shaft; 30. Feed hopper; 31. Outer ring; 32. Guide tube; 33. Fine-tuning spring; 34. Fixed inner guide tube; 35. Moving inner guide tube; 36. Internal threaded cylinder; 37. Threaded rod; 38. Cantilever frame; 39. Quick-connect inclined tube; 40. Quick-connect bend. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0022] Example

[0023] Please see Figures 1-21This is a screw conveyor for alumina powder, comprising an adjusting support assembly, a screw conveyor, and a main frame 1. A movable frame 2 is slidably connected to the main frame 1. A servo motor 3 is installed inside the main frame 1. The adjusting support assembly includes a fixed outer cylinder 4 and a movable outer cylinder 5, which are rotatably connected to the main frame 1 and the movable frame 2, respectively. A fixed inner cylinder 6 and a movable inner cylinder 7 are fixedly installed inside the fixed outer cylinder 4 and the movable outer cylinder 5, respectively. The fixed inner cylinder 6 and the movable inner cylinder 7 are slidably connected to each other. Multiple linkage rope rings 8 are installed on the structure formed by the fixed inner cylinder 6 and the movable inner cylinder 7. Multiple fixed columns 13 are fixedly connected between the fixed inner cylinder 6 and the fixed outer cylinder 4. Multiple movable columns 14 are fixedly connected between the movable inner cylinder 7 and the movable outer cylinder 5. Adjusting frames 15 are slidably connected to each of the multiple fixed columns 13 and the multiple movable columns 14. Multiple elastic support springs 16 are connected to the outside of both the 6th and the movable inner cylinder 7. The multiple elastic support springs 16 are connected to multiple adjusting frames 15 respectively. Two guide cylinders 17 are fitted on each of the multiple linkage rope rings 8. The multiple guide cylinders 17 are fixedly connected to the multiple adjusting frames 15 respectively. Each of the multiple adjusting frames 15 has a guide groove 18. The multiple guide grooves 18 are matched with multiple fixed columns 13 and multiple movable columns 14 respectively. Each of the multiple adjusting frames 15 is fixedly connected to a pressing frame 19. The multiple pressing frame 19 are matched with multiple fixed columns 13 and multiple movable columns 14 respectively. Each of the multiple adjusting frames 15 has a stepped hole. Each of the multiple stepped holes has a support sleeve 20 that slides in. The multiple support sleeves 20 are fixedly connected to multiple elastic support springs 16 respectively. Each of the multiple stepped holes has a threaded column 21 that rotates in. The multiple threaded columns 21 are threadedly connected to the multiple support sleeves 20 respectively.

[0024] It should be further explained that a control motor 9 is installed inside the fixed inner cylinder 6. An internally threaded cylinder 36 is connected to the output shaft of the control motor 9. A threaded rod 37 is internally threaded onto the internally threaded cylinder 36 and is fixedly connected inside the movable inner cylinder 7. The control motor 9 is used to adjust the position of the movable inner cylinder 7 relative to the fixed inner cylinder 6. A drive spur gear is installed on the output shaft of the servo motor 3. The drive spur gear meshes with a drive spur gear ring, which is fixedly connected to the fixed outer cylinder 4. The servo motor 3 is used to drive the fixed outer cylinder 4 to rotate. By adjusting the configuration of the support components, a support structure for the two spiral elastic tubes 10 is formed, and the two spiral elastic tubes 10 can be supported internally. The diameter and overall length are adjusted in a coordinated manner to adapt to various conveying distances. Multiple fixed columns 13 are externally mounted with synchronous gears 22, and multiple movable columns 14 are externally mounted with linkage gears 23. Each fixed column 13 is fixedly connected to a fixed pressure frame 24, which is matched with the synchronous gears 22. Each movable column 14 is fixedly connected to a movable pressure frame 25, which is matched with the linkage gears 23. Limiting pins 26 are inserted into one of the fixed pressure frames 24 and one of the movable pressure frames 25. Limiting springs 27 are fixedly connected to both the fixed pressure frame 24 and the movable pressure frame 25. The two limiting springs 27 are respectively connected to two… Limit pins 26 are connected, and the two limit pins 26 are respectively matched with synchronous gears 22 and linkage gears 23. Synchronous gears 22 and linkage gears 23 are meshed and connected to multiple transmission gears 28. Multiple fixed columns 13 and multiple moving columns 14 are rotatably connected to transmission shafts 29. Multiple transmission shafts 29 are respectively fixedly connected to multiple threaded columns 21. Multiple transmission gears 28 are respectively fixedly connected to multiple transmission shafts 29. This facilitates synchronous adjustment of multiple support sleeves 20 in the fixed outer cylinder 4 and also facilitates synchronous adjustment of multiple support sleeves 20 in the moving outer cylinder 5, making operation more convenient. The screw conveyor includes two spiral elastic tubes 10, which are spirally arranged in multiple linkage gears 28. Outside the rope ring 8, one end of each of the two spiral elastic tubes 10 is fixedly connected to a feed pipe 11, and the other end of each of the two spiral elastic tubes 10 is fixedly connected to a discharge pipe 12. The two discharge pipes 12 are of different lengths. The movable frame 2 is fixedly connected to a cantilever frame 38, and the cantilever frame 38 is fixedly connected to a quick-connect inclined pipe 39 and a quick-connect bent pipe 40. The quick-connect inclined pipe 39 is connected to the longer discharge pipe 12, and the quick-connect bent pipe 40 is connected to the other discharge pipe 12. Through the design of the spiral conveying equipment, the alumina powder is matched to form the spiral conveying execution structure, and the conveying operation is realized through the spiral elastic tubes 10, which has a good internal and external sealing effect and ensures the sealing of the conveying.

[0025] It should be further explained that two feeding hoppers 30 are fixedly connected to the outside of the main frame 1. Both feeding hoppers 30 are fixedly connected to outer rings 31. Both outer rings 31 are fixedly connected to the main frame 1. Both outer rings 31 are rotatably connected to sealing rings. Both sealing rings are fixedly connected to guide pipes 32. The two guide pipes 32 are respectively connected to two feed pipes 11. The two fixed feeding hoppers 30 can respectively guide the alumina powder into the two rotating spiral elastic tubes 10. Multiple linkage rope rings 8 are provided with open sections. Multiple openings are fixedly connected to fine adjustment springs 33, so that the linkage rope rings 8 have adjustable elastic variables. This can ensure the tension of the linkage rope rings 8 and avoid the linkage rope rings 8 from bearing excessive tension. Multiple linkage rope rings 8 are fitted with fixed inner guide tubes 34 and movable inner guide tubes 35. Multiple fixed inner guide tubes 34 are fixedly connected to the fixed inner cylinder 6. Multiple movable inner guide tubes 35 are fixedly connected to the movable inner cylinder 7, which guides the linkage rope rings 8.

[0026] In this embodiment, the servo motor 3 and the control motor 9 are both commercially available conventional devices known to those skilled in the art. Other models can be selected or customized according to actual needs. In this solution, we only use them without modifying their structure and function. Their setting method, installation method and electrical connection method can be debugged and operated by those skilled in the art according to the requirements of their instruction manual, and will not be described in detail here.

[0027] In summary, the working principle of this screw conveyor for alumina powder is as follows: Before use, the entire equipment is installed in the alumina powder conveying area, and the circuits of the servo motor 3 and the control motor 9 are installed. After confirming that everything is correct, pre-adjustment is performed according to the on-site alumina powder conveying requirements. During adjustment, the control motor 9 drives the internal threaded cylinder 36, which is connected to its output shaft, to rotate. The internal threaded cylinder 36 is threadedly engaged with the threaded rod 37, which is fixedly connected to the movable inner cylinder 7. Therefore, when the internal threaded cylinder 36 rotates, the movable inner cylinder 7 will move axially. When the movable inner cylinder 7 moves, it drives the movable outer cylinder 5 to move synchronously through multiple movable columns 14. The movable outer cylinder 5 then drives the movable frame 2, which is rotatably connected to it, to slide along the main frame 1, thereby changing the length of the combination of the fixed inner cylinder 6 and the movable inner cylinder 7 according to the required conveying distance. During this process, multiple linkage rope rings 8 connected between the fixed inner cylinder 6 and the movable inner cylinder 7 change with the change in the distance between the two cylinders. That is, when the fixed inner cylinder 6 and the movable inner cylinder 7 move together, the length of the movable outer cylinder 7 changes accordingly. When the overall length of the structure formed by the moving inner cylinder 7 becomes shorter, the overall length support of the linkage rope ring 8 also becomes shorter. Therefore, under the elastic action of multiple elastic support springs 16, the difference between the inner and outer rings of the linkage rope ring 8 becomes larger, that is, the support diameter of the linkage rope ring 8 on the spiral elastic tube 10 becomes larger, and the corresponding spiral diameter of the spiral elastic tube 10 becomes larger. For the same length of tube, the larger the spiral diameter, the fewer the number of spiral turns are formed, and the corresponding effective conveying distance becomes shorter. Conversely, the smaller the spiral diameter, the more the number of spiral turns are formed, and the corresponding effective conveying distance becomes longer. This adapts to the operational requirements of different conveying distances and on-site conveying conditions. During the adjustment process, in extreme cases, the fine-tuning springs 33 set at the opening sections of each linkage rope ring 8 elastically expand and contract, ensuring that the linkage rope ring 8 is always in a taut state while avoiding excessive tension. The fixed inner guide tube 34 in the fixed inner cylinder 6 and the moving inner guide tube 35 in the moving inner cylinder 7 guide the direction of the linkage rope ring 8, respectively.

[0028] If the inner diameter of the two spiral elastic tubes 10 can be adjusted to a large extent, the synchronous gear 22 or the linkage gear 23 can be rotated. The synchronous gear 22 is rotatably mounted outside the fixed column 13, and the linkage gear 23 is rotatably mounted outside the movable column 14. Both mesh with multiple transmission gears 28. Rotating the synchronous gear 22 or the linkage gear 23 will drive the multiple transmission gears 28 meshing with it to rotate synchronously. Each transmission gear 28 is fixedly connected to a transmission shaft 29, and the transmission shaft 29 is fixedly connected to the threaded column 21. The rotation of the transmission gear 28 can be transmitted to the threaded column 21 through the transmission shaft 29. The threaded post 21 is threadedly connected to the support sleeve 20, which slides within the stepped hole. When the threaded post 21 rotates, it drives the support sleeve 20 to slide along the stepped hole, thereby adjusting the relative position between the guide cylinder 17 and the elastic support spring 16. This achieves a significant adjustment of the relative position between the fixed inner cylinder 6 and the movable inner cylinder 7. During adjustment, the linkage rope ring 8 will adjust synchronously. In the adjusted state, the elasticity of the limiting spring 27 should be overcome to separate the limiting pin 26 from the synchronous gear 22 or the linkage gear 23. Maintaining this separation, the corresponding synchronous gear 22 or linkage gear 23 is rotated. After adjustment, release the tension on the limit pin 26, allowing it to reset under the elastic action of the limit spring 27. When the limit pin 26 contacts the synchronous gear 22 or the linkage gear 23 again, it will lock and prevent free rotation, thus changing the adjusted support state. After the length and support inner diameter are adjusted, lock the control motor 9 to fix the overall conveying structure, and then begin the conveying operation. The servo motor 3 drives the fixed outer cylinder 4 to rotate around its own axis, and the fixed outer cylinder 4 drives the fixed inner cylinder through multiple fixed columns 13. 6. Due to the sliding connection between the fixed inner cylinder 6 and the movable inner cylinder 7, the rotation of the fixed inner cylinder 6 will drive the movable inner cylinder 7 to rotate synchronously. The movable inner cylinder 7 will then drive the movable outer cylinder 5 to rotate via multiple movable columns 14. Since the fixed outer cylinder 4 and the movable outer cylinder 5 are rotatably connected to the main frame 1 and the movable frame 2 respectively, the support structure composed of the fixed outer cylinder 4, the movable outer cylinder 5, the fixed inner cylinder 6, the movable inner cylinder 7 and multiple linkage rope rings 8 can rotate as a whole. The two spiral elastic tubes 10 sleeved on the outside of the linkage rope rings 8 will rotate together to form a spiral conveying channel.

[0029] After the conveying operation begins, alumina powder is fed into two feeding hoppers 30. The alumina powder falls into the outer ring 31 connected to the hopper 30, and then enters the feed pipe 11 through the sealing ring rotatably connected to the outer ring 31 and the guide pipe 32 fixedly connected to the sealing ring. The powder then enters the interior of the two spiral elastic tubes 10 through the two feed pipes 11. Since the outer ring 31 is fixedly connected to the main frame 1, and the feed pipe 11 rotates together with the spiral elastic tube 10, the sealing ring forms a rotational seal between the relatively rotating components, preventing alumina powder from leaking out at the feed connection and entering the spiral. The alumina powder inside the elastic tube 10 is propelled spirally along the tube body by its spiral rotation structure. After passing through the spiral elastic tube 10 completely, it enters the corresponding connected discharge pipe 12 for discharge. Since the two discharge pipes 12 are of different lengths, the longer discharge pipe 12 is connected to the quick-connect inclined pipe 39 fixedly connected to the cantilever frame 38, and the other discharge pipe 12 is connected to the quick-connect bend pipe 40, thus forming inclined and bent discharge channels respectively to adapt to different material receiving arrangements on site. After the alumina powder conveying operation is completed, the feeding of alumina powder into the feed pipe 11 is stopped, and the servo motor 3 is controlled to continue operating. After a period of time, the remaining alumina powder inside the spiral elastic tube 10 is completely pushed to the discharge pipe 12 for discharge. After the remaining material is cleared, the servo motor 3 is turned off, thus completing a single alumina powder spiral conveying operation. Since the two spiral elastic tubes 10 are independent of each other, they can convey alumina powder of different specifications. For ease of explanation, this solution shows the adaptation structure of the two spiral elastic tubes 10. In practical applications, a single spiral elastic tube 10 structure or a conveying structure with more than two spiral elastic tubes 10 can be selected according to the conveying needs. A flange ring is provided on the outside of the bucket 30, which can be adapted to form a connection with the external alumina powder conveying pipeline. The quick-connect inclined pipe 39 and quick-connect bend 40 are both adapted with quick-connect sections, which can be matched with external equipment or pipelines to form a connection, so as to seal the entire conveying path of alumina powder. In order to ensure the passage effect of the spiral elastic tube 10 and avoid the deformation of the cross section of the spiral elastic tube 10 from affecting the conveying effect, a spiral elastic tube 10 with appropriate hardness should be selected, or a steel wire hose should be used. The feed pipe 11 and the discharge pipe 12 are both made of rigid pipe to fix the position of the two ends of the spiral elastic tube 10.

[0030] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0031] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A screw conveyor for alumina powder, characterized in that, It includes an adjustable support assembly, a screw conveyor and a main frame (1), a movable frame (2) is slidably connected on the main frame (1), and a servo motor (3) is installed inside the main frame (1). The adjustment support assembly includes a fixed outer cylinder (4) and a movable outer cylinder (5). The fixed outer cylinder (4) and the movable outer cylinder (5) are rotatably connected to the main frame (1) and the movable frame (2), respectively. A fixed inner cylinder (6) and a movable inner cylinder (7) are fixedly installed in the fixed outer cylinder (4) and the movable outer cylinder (5), respectively. The fixed inner cylinder (6) and the movable inner cylinder (7) are slidably connected to each other. Multiple linkage rope rings (8) are installed on the structure formed by the fixed inner cylinder (6) and the movable inner cylinder (7). A control motor (9) is installed in the fixed inner cylinder (6). The control motor (9) is used to adjust the position of the movable inner cylinder (7) relative to the fixed inner cylinder (6). The servo motor (3) is used to drive the fixed outer cylinder (4) to rotate. The spiral conveying device includes two spiral elastic tubes (10), both spiral elastic tubes (10) are spirally arranged outside the multiple linkage rope rings (8), one end of each spiral elastic tube (10) is fixedly connected to a feed pipe (11), and the other end of each spiral elastic tube (10) is fixedly connected to a discharge pipe (12).

2. The screw conveyor for alumina powder according to claim 1, characterized in that: Multiple fixed columns (13) are fixedly connected between the fixed inner cylinder (6) and the fixed outer cylinder (4). Multiple movable columns (14) are fixedly connected between the movable inner cylinder (7) and the movable outer cylinder (5). Adjustment frames (15) are slidably connected to the multiple fixed columns (13) and the multiple movable columns (14). Multiple elastic support springs (16) are connected to the outside of the fixed inner cylinder (6) and the movable inner cylinder (7). The multiple elastic support springs (16) are respectively connected to the multiple adjustment frames (15). Two guide tubes (17) are fitted on the multiple linkage rope rings (8). The multiple guide tubes (17) are respectively fixedly connected to the multiple adjustment frames (15).

3. The screw conveyor for alumina powder according to claim 2, characterized in that: Each of the multiple adjustment frames (15) is provided with a guide groove (18), and the multiple guide grooves (18) are respectively matched with the multiple fixed columns (13) and the multiple movable columns (14). Each of the multiple adjustment frames (15) is fixedly connected with a press-fit frame (19), and the multiple press-fit frames (19) are respectively matched with the multiple fixed columns (13) and the multiple movable columns (14).

4. The screw conveyor for alumina powder according to claim 3, characterized in that: Each of the multiple adjustment frames (15) has a stepped hole, and each of the multiple stepped holes has a support sleeve (20) that slides in. Each of the multiple support sleeves (20) is fixedly connected to each of the multiple elastic support springs (16). Each of the multiple stepped holes has a threaded column (21) that rotates in. Each of the multiple threaded columns (21) is threadedly connected to each of the multiple support sleeves (20).

5. The screw conveyor for alumina powder according to claim 4, characterized in that: A plurality of fixed columns (13) are externally rotatably mounted with synchronous gears (22), and a plurality of movable columns (14) are externally rotatably mounted with linkage gears (23). Each of the fixed columns (13) is fixedly connected to a fixed pressure frame (24), and each of the fixed pressure frames (24) is matched with the synchronous gears (22). Each of the movable columns (14) is fixedly connected to a movable pressure frame (25), and each of the movable pressure frames (25) is matched with the linkage gears (23). Limiting pins (26) are inserted into one of the fixed pressure frames (24) and one of the movable pressure frames (25). Limiting springs (27) are fixedly connected to both the pressure frame (24) and the movable pressure frame (25). The two limiting springs (27) are respectively connected to two limiting pins (26). The two limiting pins (26) are respectively matched with the synchronous gear (22) and the linkage gear (23). The synchronous gear (22) and the linkage gear (23) are meshed and connected to multiple transmission gears (28). The multiple fixed columns (13) and the multiple movable columns (14) are rotatably connected to transmission shafts (29). The multiple transmission shafts (29) are respectively fixedly connected to the multiple threaded columns (21). The multiple transmission gears (28) are respectively fixedly connected to the multiple transmission shafts (29).

6. The screw conveyor for alumina powder according to claim 5, characterized in that: Two feeding hoppers (30) are fixedly connected to the outside of the main frame (1). Both feeding hoppers (30) are fixedly connected to an outer ring (31). Both outer rings (31) are fixedly connected to the main frame (1). Both outer rings (31) are rotatably connected to a sealing ring. Both sealing rings are fixedly connected to a guide pipe (32). Both guide pipes (32) are respectively connected to two feed pipes (11).

7. The screw conveyor for alumina powder according to claim 6, characterized in that: Each of the multiple linkage rope loops (8) is provided with an open section, and each of the multiple openings is fixedly connected with a fine adjustment spring (33). Each of the multiple linkage rope loops (8) is fitted with a fixed inner guide tube (34) and a movable inner guide tube (35). Each of the multiple fixed inner guide tubes (34) is fixedly connected inside the fixed inner cylinder (6), and each of the multiple movable inner guide tubes (35) is fixedly connected inside the movable inner cylinder (7).

8. The screw conveyor for alumina powder according to claim 7, characterized in that: An internally threaded cylinder (36) is driven to the output shaft of the control motor (9), and a threaded rod (37) is internally threaded to the internally threaded cylinder (36), and the threaded rod (37) is fixedly connected inside the movable inner cylinder (7).

9. The screw conveyor for alumina powder according to claim 8, characterized in that: The two discharge pipes (12) are of different lengths, and the movable frame (2) is fixedly connected to the cantilever frame (38). The cantilever frame (38) is fixedly connected to the quick-connect inclined pipe (39) and the quick-connect bend pipe (40). The quick-connect inclined pipe (39) is connected to the longer discharge pipe (12), and the quick-connect bend pipe (40) is connected to the other discharge pipe (12).

10. A conveying method for an alumina powder screw conveyor, characterized in that, The use of the screw conveyor for alumina powder according to any one of claims 1-9 includes the following steps: S1. Install the entire equipment in the alumina powder conveying operation area, install and check the circuit of the servo motor (3) and the control motor (9), and according to the conveying operation requirements, drive the moving inner cylinder (7) to shift its position relative to the fixed inner cylinder (6) through the control motor (9), and coordinate with the linkage adjustment of multiple linkage rope rings (8) to drive the moving frame (2) to form a sliding fine adjustment relative to the main frame (1), and synchronously adjust the shape of the outer spiral elastic tube (10) to adapt to the conveying conditions of alumina powder on site. S2. After adjustment, lock the control motor (9) to fix the shape and size of the overall conveying structure. The servo motor (3) drives the fixed outer cylinder (4) to rotate, which in turn drives the moving outer cylinder (5) and the linkage rope ring (8) to rotate at a uniform speed, so that the two spiral elastic tubes (10) sleeved on the outside of the linkage rope ring (8) can synchronously form a stable spiral conveying channel. S3. Start the feeding process. Alumina powder enters the interior of two spiral elastic tubes (10) through two feeding pipes (11). Relying on the spiral rotation structure of the spiral elastic tube (10), the material is driven to spirally advance along the tube body and is discharged into the corresponding connected discharge pipe (12) after passing through the spiral elastic tube (10). S4. After the alumina powder conveying operation is completed, stop feeding alumina powder into the feed pipe (11), and continue to run the servo motor (3) for a period of time to completely push the alumina powder remaining inside the spiral elastic tube (10) to the discharge pipe (12). After the remaining material is cleared, turn off the servo motor (3) to complete a single alumina powder spiral conveying operation.

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