A waste collection device and method for phosphogypsum processing

Abstract

This invention provides a waste residue collection device and method for phosphogypsum processing, solving the problem of poor crushing and drying effects in existing collection devices. The device includes an outer cylinder, with a feed pipe installed at the top of its outer side. A lifting cylinder with an open top is coaxially fixed inside the outer cylinder. A lifting rod is rotatably installed in the middle of the outer cylinder, located inside the lifting cylinder. A lifting auger is fixedly installed outside the lifting rod, also inside the lifting cylinder. A spreading ring is coaxially rotatably installed on the outer side of the top of the lifting cylinder. A spreading cone with a downwardly inclined outer edge is coaxially fixedly installed on the outer surface of the spreading ring. Multiple circumferentially distributed drying arc plates are fixedly installed on the inner side of the outer cylinder, located below the spreading cones. Each drying arc plate has several protrusions on its outer surface. A drying air knife is fixedly installed on the inner side of the outer cylinder between every two drying arc plates. This invention, through the lifting cylinder and lifting auger, enables the waste residue to be repeatedly and thoroughly crushed and dried.

Description

Technical Field

[0001] This invention relates to the field of phosphogypsum waste collection technology, specifically to a waste collection device and method for phosphogypsum processing. Background Technology

[0002] Phosphogypsum refers to the solid waste residue generated during the treatment of phosphate rock with sulfuric acid in phosphoric acid production. Its main component is calcium sulfate. Phosphogypsum is generally in powder form and its appearance is usually grayish-white, grayish-yellow, or light green. It also contains organophosphorus and sulfur-fluorine compounds. my country currently discharges about 20 million tons of phossphogypsum annually, with a cumulative discharge of nearly 100 million tons, making it the largest type of gypsum waste in terms of discharge volume. The discharged phossphogypsum residue occupies a large amount of land, forming slag heaps and seriously polluting the environment. Therefore, it is very necessary to reuse phossphogypsum. Currently, phossphogypsum is mainly reused in building materials, soil conditioners, cement retarders, and chemical raw materials.

[0003] Existing waste collection devices for phosphogypsum processing involve crushing the phosphogypsum with a crushing roller, followed by drying and collection. However, during the crushing process, the phosphogypsum itself contains moisture, causing a large amount of phosphogypsum to adhere to the surface of the crushing roller. This not only affects the crushing effect of the phosphogypsum but also the amount of phosphogypsum waste collected. Therefore, manual cleaning of the crushing roller is required at regular intervals, increasing the workload of the workers.

[0004] Secondly, in the process of drying the crushed phosphogypsum waste residue, the guide plate of the phosphogypsum waste residue is usually heated by a heating plate. The phosphogypsum is dried when it passes over the guide plate. However, since the phosphogypsum only passes quickly above the guide plate, it cannot be completely dried in a short time. Moreover, the phosphogypsum is in a state of accumulation on the guide plate. The bottom of the phosphogypsum waste residue in contact with the guide plate can be dried, but the inside and top of the phosphogypsum cannot be dried. Therefore, the drying effect of the phosphogypsum waste residue is not good, which affects the drying efficiency of the phosphogypsum waste residue.

[0005] Therefore, the present invention provides a waste collection device and method for phosphogypsum processing to solve the above-mentioned problems. Summary of the Invention

[0006] In view of the above situation and to overcome the defects of the prior art, the present invention provides a waste residue collection device and method for phosphogypsum processing, to solve the problems mentioned in the background art: in the existing collection device, during the crushing process, a large amount of phosphogypsum adheres to the surface of the crushing roller, affecting the crushing effect of phosphogypsum; the bottom of the phosphogypsum waste residue in contact with the guide plate can be dried, but the inside and top of the phosphogypsum cannot be dried, resulting in poor drying effect.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0008] A waste collection device for phosphogypsum processing includes an outer cylinder, a feed pipe installed on the top of the outer side of the outer cylinder, a feed auger rotatably installed inside the feed pipe, a lifting cylinder with a top opening coaxially fixed inside the outer cylinder, a lifting port penetrating between the inner and outer sides of the bottom of the lifting cylinder, a lifting rod rotatably installed in the middle of the outer cylinder and located inside the lifting cylinder, a lifting auger fixedly installed on the outer side of the lifting rod and located inside the lifting cylinder, a spreading ring rotatably installed coaxially on the outer side of the top of the lifting cylinder, a spreading cone with an outer edge inclined downwards coaxially fixedly installed on the outer surface of the spreading ring, a plurality of drying arc plates located below the spreading cone and evenly distributed around the circumference fixedly installed on the inner side of the outer cylinder, a plurality of protrusions provided on the outer side of each drying arc plate, and a drying air knife fixedly installed on the inner side of the outer cylinder between every two drying arc plates;

[0009] The outer cylinder is equipped with a crushing device located below multiple drying arc plates, and a crushing device is connected to the bottom of the outer cylinder.

[0010] Preferably, a heating cylinder is coaxially fixedly installed on the outer side of the outer cylinder, a heating tube is installed inside the heating cylinder, an air inlet pipe is installed through and fixedly installed on the outer side of the heating cylinder, and an air inlet penetrating the inner and outer sides of the outer cylinder is provided between each drying air knife and the interior of the heating cylinder.

[0011] Preferably, the top of the outer cylinder has multiple air outlets, and each air outlet is equipped with a filter element.

[0012] Preferably, a plurality of filter element brush rods are fixedly installed on the outer side of the lifting rod, and a filter element brush located below the filter element is fixedly installed at the end of each filter element brush rod away from the lifting rod. A drive motor connected to the top end of the lifting rod is fixedly installed on the top of the outer cylinder.

[0013] Preferably, a plurality of material spreading drive rods are fixedly installed on the outer side of the lifting rod, and the other end of each of the plurality of material spreading drive rods is fixedly connected to the top of the material spreading ring. A plurality of material spreading baffles are fixedly installed circumferentially on the top surface of the material spreading cone.

[0014] Preferably, the pulverizing device includes pulverizing drive rods, pulverizing substrates, pulverizing rollers, and pulverizing blades. Multiple pulverizing drive rods that fit against the outer wall of the lifting cylinder are fixedly installed at the bottom of the feeding ring. A pulverizing substrate located below multiple drying arc plates is fixedly installed at the bottom of each pulverizing drive rod. Two pulverizing rollers are rotatably installed at the bottom of each pulverizing substrate. A pulverizing blade is provided on the outer surface of each pulverizing roller. A pulverizing drive assembly is provided on the top of each pulverizing substrate.

[0015] Preferably, the pulverizing drive assembly includes a pulverizing pulley, a pulverizing belt, a pulverizing gear ring, a pulverizing gear, a pulverizing drive pulley, and a pulverizing drive belt. Each pulverizing roller has a pulverizing pulley fixedly mounted on its top end at the top of the pulverizing substrate. A pulverizing belt is installed between two pulverizing pulleys on each pulverizing substrate. A pulverizing gear ring located below the drying arc plate is coaxially fixedly mounted on the inner wall of the outer cylinder. A pulverizing gear meshing with the pulverizing gear ring is rotatably mounted on the top end of the pulverizing substrate near the inner wall of the outer cylinder. A pulverizing drive pulley is coaxially rotatably mounted on the top of the pulverizing gear ring. A pulverizing drive belt is installed between the pulverizing drive pulley and one of the pulverizing pulleys. A protective cover is installed above the top of each pulverizing substrate.

[0016] Preferably, a scraper ring is coaxially rotatably mounted at the bottom of the inner end of the outer cylinder, and a scraper connecting rod is fixedly mounted at the bottom of one end of each crushing substrate near the inner wall of the outer cylinder. The other ends of the multiple scraper connecting rods are fixedly connected to the top of the scraper ring, and multiple arc-shaped scrapers that fit against the bottom inner wall of the outer cylinder are fixedly mounted at the bottom of the scraper ring.

[0017] Preferably, the compaction device includes a compaction outer cylinder, a compaction cloth hopper, a compaction cloth auger, a compaction discharge trough, compaction rollers, and a discharge collection auger. The bottom of the outer cylinder is connected to the compaction outer cylinder. A solenoid valve is installed between the outer cylinder and the compaction outer cylinder. The compaction cloth hopper is fixedly installed between the left and right inner walls of the compaction outer cylinder. The compaction cloth auger located inside the compaction cloth hopper is rotatably installed between the left and right inner walls of the compaction outer cylinder. The compaction discharge trough extends through the bottom of the compaction cloth hopper. Two compaction rollers with symmetrical front-to-back positions and outer surfaces abutting each other are rotatably installed between the left and right inner walls of the compaction outer cylinder below the compaction cloth hopper. The discharge collection auger abutting the lowest point of the inner wall of the compaction outer cylinder is rotatably installed between the left and right inner walls of the compaction outer cylinder. A discharge collection pipe is installed on the right side of the compaction outer cylinder.

[0018] A reciprocating screw is rotatably installed between the left and right inner walls of the outer rolling cylinder, located below the two rolling rollers. A scraper block that fits against the outer surface of the two rolling rollers is threaded onto the reciprocating screw.

[0019] The left ends of the two rolling rollers are coaxially fixedly equipped with rolling gears located outside the rolling cylinder. The two rolling gears mesh with each other. The left ends of one of the rolling gears, the rolling fabric auger, the discharge collection auger, and the reciprocating screw are coaxially fixedly equipped with drive sprockets. A drive chain connects the multiple drive sprockets.

[0020] A method for using a waste residue collection device for phosphogypsum processing, comprising the following specific steps:

[0021] a. The feed pipe discharges phosphogypsum waste into the bottom of the outer cylinder. The circumferentially moving crushing device can crush the clumped waste. The lifting auger lifts the waste from the bottom of the outer cylinder to the top of the outer cylinder. Then the waste is sprinkled onto the inner wall of the outer cylinder by the rotating spreading cone and falls into the interior of multiple drying arc plates.

[0022] b. Multiple drying air knives can blow hot air into the waste residue inside multiple drying arc plates to dry it. The waste residue moves along the drying arc plates, which increases the time it is blown by hot air and can be crushed again by the spikes. The dried waste residue falls to the bottom of the outer cylinder and can be repeatedly lifted and dried.

[0023] c. The dried and pulverized waste residue can be discharged into the crushing cloth hopper inside the outer cylinder of the crushing cylinder through the solenoid valve, and then fall into the space between the two crushing rollers through the crushing discharge chute to be crushed into powder. The crushing cloth auger can evenly distribute the waste residue to prevent it from accumulating below the solenoid valve.

[0024] d. The waste residue crushed into powder by the rollers can be discharged from the discharge collection pipe through the discharge collection auger for collection, while the scraper blocks that move back and forth under the two rollers can scrape off the waste residue powder adhering to the surface of the rollers.

[0025] The beneficial effects of this invention are as follows: This invention uses a circumferentially moving crushing device to crush agglomerated phosphogypsum waste residue in the first stage. The lifting auger can continuously lift the waste residue from the bottom to the top of the outer cylinder, and then the rotating spreading cone disk evenly spreads it onto the inner wall of the outer cylinder. The waste residue falls into the space inside multiple drying arc plates, where it can be dried by hot air blown out by multiple drying air knives. The waste residue is blown by hot air for a longer time along multiple drying arc plates, increasing the drying efficiency. At the same time, when the waste residue comes into contact with the drying arc plates, it can be crushed a second time by several spikes. Through the lifting cylinder and the lifting auger, the waste residue can be crushed and dried multiple times. After the phosphogypsum waste residue is dried, it can be crushed into powder by a crushing device, and the powdered phosphogypsum can be collected through a discharge collection pipe. Attached Figure Description

[0026] Figure 1 This is a three-dimensional schematic diagram of the present invention.

[0027] Figure 2 This is a front cross-sectional view of the present invention.

[0028] Figure 3 This is a front cross-sectional view of the outer cylinder of the present invention.

[0029] Figure 4 This is a front cross-sectional view of the compaction device of the present invention.

[0030] Figure 5 This is a three-dimensional cross-sectional schematic diagram of the rolling device of the present invention.

[0031] Figure 6 For the present invention Figure 3 Enlarged view of point D in the middle.

[0032] Figure 7 For the present invention Figure 3 A cross-sectional view of section BB.

[0033] Figure 8 For the present invention Figure 3 A cross-sectional view at point CC.

[0034] Figure 9 This is a schematic diagram of the drying arc plate and spikes of the present invention.

[0035] Figure 10 For the present invention Figure 3 Enlarged view of point E in the middle.

[0036] Figure 11 For the present invention Figure 10 A magnified view of point G in the middle.

[0037] Figure 12 For the present invention Figure 3 Enlarged view of point F in the middle.

[0038] Figure 13 For the present invention Figure 1 A three-dimensional cross-sectional view of point AA.

[0039] Figure 14 For the present invention Figure 1 A schematic diagram of the planar cross-section at point AA.

[0040] Figure 15 This is a schematic diagram of the left side of the present invention.

[0041] In the diagram: 1. Outer cylinder; 2. Feed pipe; 3. Feed auger; 4. Lifting cylinder; 5. Lifting inlet; 6. Lifting rod; 7. Lifting auger; 8. Spreading ring; 9. Spreading cone; 10. Drying arc plate; 11. Spike; 12. Drying air knife; 13. Heating cylinder; 14. Air inlet pipe; 15. Air inlet; 16. Air outlet; 17. Filter element; 18. Filter element brush rod; 19. Filter element brush; 20. Drive motor; 21. Crushing device; 22. Rolling device; 23. Spreading drive rod; 24. Spreading baffle plate; 25. Crushing drive rod; 26. Crushing base 27. Crushing plate; 28. Crushing roller; 29. ​​Crushing blade; 30. Crushing pulley; 31. Crushing belt; 32. Crushing gear; 33. Crushing drive pulley; 34. Crushing drive belt; 35. Protective cover; 36. Scraper ring; 37. Scraper connecting rod; 38. Scraper; 39. Crushing outer cylinder; 40. Crushing cloth hopper; 41. Crushing cloth auger; 42. Crushing discharge trough; 43. Crushing roller; 44. Discharge collection auger; 45. Discharge collection pipe; 46. Reciprocating screw; 47. Scraper block; 48. Crushing gear; 49. Drive sprocket; 50. Drive chain. Detailed Implementation

[0042] The foregoing and other technical contents, features and effects of the present invention are described in conjunction with the appendix below. Figures 1 to 15 As will be clearly shown in the detailed description of the embodiments, those skilled in the art should understand that these embodiments are merely for explaining the technical principles of the present invention and are not intended to limit the scope of protection of the present invention. The structural contents mentioned in the following embodiments are all with reference to the accompanying drawings.

[0043] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0044] Example 1: A waste residue collection device for phosphogypsum processing, as shown in the attached diagram. Figure 1-15 As shown, the device includes an outer cylinder 1 with a conical bottom. A feed pipe 2 is installed on the top of the outer side of the outer cylinder 1. A feed auger 3 is rotatably installed inside the feed pipe 2. Phosphogypsum waste can be discharged into the outer cylinder 1 through the feed auger 3. A lifting cylinder 4 with a top opening is coaxially fixed inside the outer cylinder 1. A lifting port 5 passes through the inner and outer sides of the bottom of the lifting cylinder 4. A lifting rod 6 is rotatably installed in the middle of the outer cylinder 1 and located inside the lifting cylinder 4. A lifting auger 7 is fixedly installed on the outside of the lifting rod 6 and located inside the lifting cylinder 4. When the lifting rod 6 drives the lifting auger 7 to rotate, it can lift the phosphogypsum waste that enters the lifting cylinder 4 through the lifting port 5 to the top of the lifting cylinder 1 and fall down from the top of the lifting cylinder 4.

[0045] A spreading ring 8 is coaxially rotatably mounted on the outer side of the top of the lifting cylinder 4. A spreading cone 9 with its outer edge inclined downwards is coaxially fixedly mounted on the outer surface of the spreading ring 8. After the phosphogypsum waste is lifted upwards to the top of the lifting cylinder 1, it falls onto the top surface of the spreading cone 9. The waste can slide down along the cone surface of the spreading cone 9 towards the inner wall of the outer cylinder 1, and the rotating spreading cone 9 can evenly spread the waste onto the inner wall of the outer cylinder 1. Multiple drying arc plates 10 located below the spreading cone 9 and evenly distributed around the circumference are fixedly mounted on the inner side of the outer cylinder 1, as shown in the attached figure. Figure 7-9 As shown, multiple drying arc plates 10 are distributed in a vortex shape. After the waste residue falls from the edge of the spreading cone 9, it can enter the internal space of the multiple drying arc plates 10. Each of the drying arc plates 10 has several protrusions 102 on its outer side. Drying air knives 11 are fixedly installed on the inner side of the outer cylinder 1 at the position between every two drying arc plates 10. The multiple drying air knives 11 can blow hot air into the internal space of the multiple drying arc plates 10, thereby drying the waste residue that falls into the internal space of the multiple drying arc plates 10. Under the drive of the hot air, the waste residue can spiral along the direction of the multiple drying arc plates 10 towards the center of the outer cylinder 1, thereby delaying the time when the waste residue falls directly downwards, allowing the waste residue to be blown by hot air for a longer time. When the waste residue comes into contact with the drying arc plate 10, it can be crushed by the protrusions on its surface, so that the clumps of waste residue can be crushed.

[0046] The outer cylinder 1 is equipped with a crushing device 21 located below multiple drying arc plates 10. After the waste residue enters the outer cylinder 1 through the feed pipe 2, it first falls to the bottom of the outer cylinder 1. When the crushing device 21 moves in a circumferential direction, it can crush the waste residue for the first time, breaking up the clumps of waste residue. At the same time, the waste residue is lifted and dried by the lifting auger 7. The waste residue can be lifted and dried multiple times, and finally the waste residue is completely dried.

[0047] The bottom of the outer cylinder 1 is connected to a crushing device 22. After multiple lifting and drying processes, the waste residue can enter the crushing device and be crushed into powder. The powdered waste residue can then be collected and reused directly.

[0048] Example 2, based on Example 1, as shown in the appendix. Figure 3 , 8As shown in Figure 9, a heating cylinder 12 is coaxially fixedly installed on the outer side of the outer cylinder 1. A heating tube 13 is installed inside the heating cylinder 12. The heating tube 13 is connected to a power supply and a controller. An air inlet pipe 14 is installed through and fixedly installed on the outer side of the heating cylinder 12. An air inlet 15 penetrating the inner and outer sides of the outer cylinder 1 is provided between each drying air knife 11 and the interior of the heating cylinder 12. The heating tube 13 can heat the air inside the heating cylinder 12. The air inlet pipe 14 is connected to a fan. The fan blows air into the heating cylinder 12 through the air inlet pipe 14, so that the hot air inside the heating cylinder 12 can enter the multiple drying air knives 11 through multiple air inlets 15 and be blown out of the multiple drying air knives 11 at high speed to achieve the drying of waste residue.

[0049] Example 3, based on Example 2, as shown in the appendix. Figure 3 , 6 As shown, the top of the outer cylinder 1 has multiple air outlets 16, and each air outlet 16 is equipped with a filter element 17. Multiple drying air knives 11 blow hot air into the outer cylinder 1, while the air inside the outer cylinder 1 can be discharged from the air outlet 16. The filter element 17 can prevent waste residue from being blown out, thereby filtering the discharged air. The waste residue is intercepted at the bottom of the filter element 17.

[0050] Example 4, based on Example 3, as shown in the appendix. Figure 14 , 15 As shown, multiple filter element brush rods 18 are fixedly installed on the outer side of the lifting rod 6. Each filter element brush rod 18 has a filter element brush 19 fixedly installed at the end away from the lifting rod 6, located below the filter element 17. A drive motor 20 connected to the top of the lifting rod 16 is fixedly installed on the top of the outer cylinder 1. The drive motor 20 is connected to a power supply and a controller. When it starts, it can drive the lifting rod 6 to rotate. The lifting rod 6 can drive the lifting auger 7 to rotate inside the lifting cylinder 4 to lift the waste residue. At the same time, the lifting rod 6 can also drive the multiple filter element brush rods 18 to move circumferentially, so that the multiple filter element brushes 19 can clean the waste residue adhering to the bottom of the filter element 17.

[0051] Example 5, based on Example 1, as shown in the appendix. Figure 3 , 6 As shown in Figure 7, multiple material spreading drive rods 23 are fixedly installed on the outer side of the lifting rod 6. The other end of each material spreading drive rod 23 is fixedly connected to the top of the material spreading ring 8. Multiple arc-shaped material spreading baffles 24 are fixedly installed circumferentially on the top surface of the material spreading cone 9. When the lifting rod 6 rotates, it can drive the material spreading ring 8 to rotate synchronously through the multiple material spreading drive rods 23, thereby driving the material spreading cone 9 to rotate. When the material spreading cone 9 rotates, it can quickly throw the waste residue onto the inner wall of the outer cylinder 1 through the multiple material spreading baffles 24.

[0052] Example 6, based on Example 1, as shown in the appendix. Figure 3 , 8 As shown in Figures 10 and 11, the pulverizing device 21 includes pulverizing drive rods 25, pulverizing plate 26, pulverizing roller 27, and pulverizing blades 28. Multiple pulverizing drive rods 25 are fixedly installed at the bottom of the feeding ring 8, which are in contact with the outer wall of the lifting cylinder 4. When the feeding ring 8 rotates, it can drive the multiple pulverizing drive rods 25 to move circumferentially. Because they move circumferentially against the outer wall of the lifting cylinder 4, the pulverizing drive rods 25 can scrape off the waste residue adhering to the outer wall of the lifting cylinder 4 when they rotate. Each pulverizing drive rod 25 has a fixedly installed base located below multiple drying arc plates 10. The crushing substrate 26 is driven by the crushing drive rod 25 to move synchronously around the crushing substrate 26. Two crushing rollers 27 are rotatably mounted on the bottom of each crushing substrate 26. A crushing blade 28 is provided on the outer side of each crushing roller 27. A crushing drive assembly is provided on the top of each crushing substrate 26. The crushing drive assembly can drive the two crushing rollers 27 to rotate synchronously. When multiple crushing substrates 26 drive multiple crushing rollers 27 to move around the circumference, the crushing blades 28 on the outer side of the rotating crushing rollers 27 can crush the agglomerated waste residue.

[0053] Example 7, based on Example 6, as shown in the appendix. Figure 10 , 11 As shown, the crushing drive assembly includes a crushing pulley 29, a crushing belt 30, a crushing gear ring 31, a crushing gear 32, a crushing drive pulley 33, and a crushing drive belt 34. Each crushing roller 27 has a crushing pulley 29 fixedly mounted on its top end, located on the top of the crushing substrate 26. A crushing belt 30 is installed between two crushing pulleys 29 on each crushing substrate 26, allowing the two crushing rollers 27 to rotate synchronously. A crushing gear ring 31 is coaxially fixedly mounted on the inner wall of the outer cylinder 1, located below the drying arc plate 10. A crushing gear 32, meshing with the crushing gear ring 31, is rotatably mounted on the top end of the crushing substrate 26 near the inner wall of the outer cylinder 1. The crushing substrate 26 is circumferentially... During movement, the crushing gear 32 rotates along the crushing gear ring 31. A crushing drive pulley 33 is coaxially mounted on the top of the crushing gear ring 32. A crushing drive belt 34 is installed between the crushing drive pulley 33 and one of the crushing pulleys 29. The crushing gear ring 31 and the crushing drive pulley 33 rotate synchronously, and the crushing drive belt 34 drives the two crushing pulleys 29 to rotate, thereby realizing the synchronous rotation of the two crushing rollers 27. A protective cover 35 is installed on the top of each crushing substrate 26. The protective cover 35 has an "L" shaped cross section, with the middle part facing upward and the two ends inclined downward, to protect the crushing drive assembly and prevent waste residue from falling onto the crushing drive assembly and affecting its movement.

[0054] Example 8, based on Example 6, as shown in the appendix. Figure 3 , 12As shown, a scraper ring 36 is coaxially rotatably mounted at the bottom of the inner cylinder 1. Each crushing substrate 26 has a scraper connecting rod 37 fixedly mounted at the bottom of one end near the inner wall of the outer cylinder 1. The other ends of the multiple scraper connecting rods 37 are fixedly connected to the top of the scraper ring 36. When the multiple crushing substrates 26 move circumferentially, they can drive the scraper ring 36 to rotate. Multiple arc-shaped scrapers 38 that fit against the bottom inner wall of the outer cylinder 1 are fixedly mounted at the bottom of the scraper ring 36. When the scraper ring 36 rotates, it can drive the multiple scrapers 38 to move circumferentially against the conical bottom inner wall of the outer cylinder 1, thereby moving the waste residue accumulated on the bottom inner wall of the outer cylinder 1. In addition, it can also move the waste residue towards the bottom of the lifting cylinder 4, so that the waste residue enters the lifting inlet 5 and is lifted upward.

[0055] Example 9, based on Example 1, as shown in the appendix. Figure 2 , 4 As shown in Figures 5 and 13-15, the compaction device 22 includes a compaction outer cylinder 39, a compaction cloth hopper 40, a compaction cloth auger 41, a compaction discharge trough 42, a compaction roller 43, and a discharge collection auger 44. The bottom of the outer cylinder 1 is connected to the compaction outer cylinder 39. Support legs can be installed on the outside of the outer cylinder 1 and the compaction outer cylinder 39, allowing it to be placed and fixed on the ground for use. A solenoid valve 101 is installed between the outer cylinder 1 and the compaction outer cylinder 39, and a discharge pipe is installed between the outer cylinder 1 and the compaction outer cylinder 39. The solenoid valve 101 can control the opening and closing of the discharge pipe. When the solenoid valve 101 is activated, the dried waste residue inside the outer cylinder 1 falls into the outer crushing cylinder 39. A crushing cloth hopper 40 is fixedly installed between the left and right inner walls of the outer crushing cylinder 39. After the waste residue enters the outer crushing cylinder 39, it falls into the inner wall of the crushing cloth hopper 40. A crushing cloth auger 41 is rotatably installed between the left and right inner walls of the outer crushing cylinder 39 and located inside the crushing cloth hopper 40. When the crushing cloth auger 41 rotates, it can spread the waste residue accumulated inside the crushing cloth hopper 40 evenly inside the crushing cloth hopper 40, so that the waste residue is evenly distributed.

[0056] The bottom of the crushing cloth hopper 40 is penetrated by a crushing discharge trough 42. The crushing outer cylinder 1 is located between the left and right inner walls below the crushing cloth hopper 40 and has two crushing rollers 43 that are symmetrically positioned front to back and have their outer surfaces abutting each other. The waste residue in the crushing cloth hopper 40 can fall down through the crushing discharge trough 42 into the space between the two crushing rollers 43. When the two crushing rollers 43 move relative to each other, they can crush the waste residue, so that the waste residue is completely crushed and pulverized into powder, which is convenient for subsequent reuse.

[0057] A discharge collection auger 44 is rotatably installed between the left and right inner walls of the outer crushing cylinder 39, abutting against the lowest point of the inner wall of the outer crushing cylinder 39. A discharge collection pipe 45 is installed on the right side of the outer crushing cylinder 39. The crushed waste powder falls to the bottom of the inner wall of the outer crushing cylinder 39 and can be driven by the rotating discharge auger 44 to the discharge collection pipe 45 and discharged into a designated container for collection and storage.

[0058] A reciprocating screw 46 located below the two rolling rollers 43 is rotatably installed between the left and right inner walls of the outer rolling cylinder 39. A scraper 47 that fits against the outer surface of the two rolling rollers 43 is threaded onto the reciprocating screw 46. When the reciprocating screw 46 rotates, it can drive the scraper 47 to move back and forth, thereby scraping and cleaning the waste residue powder adhering to the outer surface of the two rolling rollers 43.

[0059] The left ends of the two rolling rollers 43 are coaxially fixedly equipped with rolling gears 48 located outside the rolling outer cylinder 1. The two rolling gears 48 mesh with each other, causing the two rolling rollers 43 to rotate relative to each other. The left ends of one of the rolling gears 48, the rolling fabric auger 41, the discharge collection auger 44, and the reciprocating screw 46 are coaxially fixedly equipped with drive sprockets 49. A drive chain 50 is connected between the multiple drive sprockets 49. The synchronous rotation of the two rolling rollers 43, the rolling fabric auger 41, the discharge collection auger 44, and the reciprocating screw 46 can be achieved through the drive sprockets 49 and the drive chain 50, thereby achieving the above-mentioned effects simultaneously.

[0060] A method for using a waste residue collection device for phosphogypsum processing, comprising the following specific steps:

[0061] a. The feed pipe discharges phosphogypsum waste into the bottom of the outer cylinder 1. The circumferentially moving crushing device 21 can crush the clumped waste. The lifting auger 7 lifts the waste from the bottom of the outer cylinder 1 to the top of the outer cylinder 1. Then the waste is scattered onto the inner wall of the outer cylinder 1 by the rotating spreading cone 9 and falls into the interior of multiple drying arc plates 10.

[0062] b. Hot air can be blown into the waste residue inside the multiple drying arc plates 10 by multiple drying air knives 11 to dry it. The waste residue can be dried by the hot air as it moves along the drying arc plates 10. It can also be crushed again by the spikes 102. The dried waste residue falls to the bottom of the outer cylinder 1 and can be lifted and dried repeatedly.

[0063] c. The dried and pulverized waste residue can be discharged into the crushing cloth hopper 40 inside the crushing outer cylinder 39 through the solenoid valve 101, and fall into the two crushing rollers 43 through the crushing discharge trough 42 to be crushed into powder. The crushing cloth auger 41 can evenly distribute the waste residue to prevent the waste residue from accumulating below the solenoid valve 101.

[0064] d. The waste residue crushed into powder by the rolling roller 43 can be discharged from the discharge collection pipe 45 through the discharge collection auger 44 for collection, while the scraper 47 moving back and forth below the two rolling rollers 43 can scrape off the waste residue powder adhering to the surface of the rolling rollers 43.

[0065] It should be noted that in the description of this invention, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0066] Furthermore, it should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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 mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0067] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, such that a process, article, or apparatus / device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to those processes, articles, or apparatus / devices.

[0068] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will all fall within the scope of protection of the present invention.

Claims

1. A waste collection device for phosphogypsum processing, comprising an outer cylinder (1), characterized in that, A feed pipe (2) is installed on the top of the outer side of the outer cylinder (1). A feed auger (3) is rotatably installed inside the feed pipe (2). A top-opening lifting cylinder (4) is coaxially fixed inside the outer cylinder (1). A lifting port (5) passes through the inner and outer sides of the bottom of the lifting cylinder (4). A lifting rod (6) located inside the lifting cylinder (4) is rotatably installed in the middle of the outer cylinder (1). A lifting auger (7) located inside the lifting cylinder (4) is fixedly installed on the outer side of the lifting rod (6). A material spreading ring (8) is coaxially rotatably mounted on the outer side of the top of the outer cylinder (1). A material spreading cone (9) with its outer edge inclined downward is coaxially fixedly mounted on the outer side of the material spreading ring (8). Multiple drying arc plates (10) located below the material spreading cone (9) and evenly distributed around the circumference are fixedly mounted on the inner side of the outer cylinder (1). Several protrusions (102) are provided on the outer side of each drying arc plate (10). A drying air knife (11) is fixedly mounted on the inner side of the outer cylinder (1) at the position between every two drying arc plates (10). The outer cylinder (1) is equipped with a crushing device (21) located below multiple drying arc plates (10), and the bottom of the outer cylinder (1) is connected to a crushing device (22). The crushing device (21) includes a crushing drive rod (25), a crushing substrate (26), a crushing roller (27), and a crushing blade (28). The bottom of the feeding ring (8) is fixedly installed with a plurality of crushing drive rods (25) that are in contact with the outer wall of the lifting cylinder (4). The bottom end of each crushing drive rod (25) is fixedly installed with a crushing substrate (26) located below a plurality of drying arc plates (10). The bottom of each crushing substrate (26) is rotatably installed with two crushing rollers (27). A crushing blade (28) is provided on the outer side of each crushing roller (27). A crushing drive assembly is provided on the top of each crushing substrate (26). The crushing drive assembly includes a crushing pulley (29), a crushing belt (30), a crushing gear ring (31), a crushing gear (32), a crushing drive pulley (33), and a crushing drive belt (34). Each crushing roller (27) has a crushing pulley (29) fixedly mounted on the top of the crushing substrate (26). A crushing belt (30) is installed between two crushing pulleys (29) on each crushing substrate (26). A crushing belt (34) is coaxially fixedly mounted on the inner wall of the outer cylinder (1). The crushing gear ring (31) is located below the drying arc plate (10). The crushing base plate (26) is rotatably mounted with a crushing gear (32) that meshes with the crushing gear ring (31) at one end near the inner wall of the outer cylinder (1). The crushing drive pulley (33) is rotatably mounted on the top of the crushing gear ring (31) on the same axis. A crushing drive belt (34) is installed between the crushing drive pulley (33) and one of the crushing pulleys (29). A protective cover (35) is installed above the top of each crushing base plate (26).

2. The waste residue collection device for phosphogypsum processing according to claim 1, characterized in that, A heating cylinder (12) is coaxially fixedly installed on the outer side of the outer cylinder (1). A heating tube (13) is installed inside the heating cylinder (12). An air inlet pipe (14) is installed through and fixedly installed on the outer side of the heating cylinder (12). An air inlet (15) penetrating the inner and outer sides of the outer cylinder (1) is provided between each drying air knife (11) and the interior of the heating cylinder (12).

3. A waste residue collection device for phosphogypsum processing according to claim 2, characterized in that, The top of the outer cylinder (1) has multiple air outlets (16), and each air outlet (16) is equipped with a filter element (17).

4. A waste residue collection device for phosphogypsum processing according to claim 3, characterized in that, Multiple filter brush rods (18) are fixedly installed on the outside of the lifting rod (6). Each filter brush rod (18) is fixedly installed with a filter brush (19) located below the filter element (17) at the end away from the lifting rod (6). A drive motor (20) connected to the top of the lifting rod (6) is fixedly installed on the top of the outer cylinder (1).

5. A waste residue collection device for phosphogypsum processing according to claim 1, characterized in that, Multiple material spreading drive rods (23) are fixedly installed on the outside of the lifting rod (6), and the other end of the multiple material spreading drive rods (23) is fixedly connected to the top of the material spreading ring (8). Multiple material spreading deflectors (24) are fixedly installed circumferentially on the top surface of the material spreading cone (9).

6. A waste residue collection device for phosphogypsum processing according to claim 1, characterized in that, A scraper ring (36) is coaxially rotatably installed at the bottom of the inner end of the outer cylinder (1). A scraper connecting rod (37) is fixedly installed at the bottom of one end of each crushing substrate (26) near the inner wall of the outer cylinder (1). The other ends of the multiple scraper connecting rods (37) are fixedly connected to the top of the scraper ring (36). Multiple arc-shaped scrapers (38) that fit against the bottom inner wall of the outer cylinder (1) are fixedly installed at the bottom of the scraper ring (36).

7. A waste residue collection device for phosphogypsum processing according to claim 1, characterized in that, The rolling device (22) includes a rolling outer cylinder (39), a rolling cloth hopper (40), a rolling cloth auger (41), a rolling discharge trough (42), a rolling roller (43), and a discharge collection auger (44). The bottom of the outer cylinder (1) is connected to the rolling outer cylinder (39). A solenoid valve (101) is installed between the outer cylinder (1) and the rolling outer cylinder (39). The rolling cloth hopper (40) is fixedly installed between the left and right inner walls of the rolling outer cylinder (39). A rolling cloth hopper (40) is rotatably installed between the left and right inner walls of the rolling outer cylinder (39). The fabric hopper (40) has a fabric crushing auger (41) inside. The bottom of the fabric crushing hopper (40) is penetrated by a crushing discharge trough (42). The outer crushing cylinder (39) is located between the left and right inner walls below the fabric crushing hopper (40) and has two crushing rollers (43) that are symmetrically positioned front to back and whose outer surfaces abut against each other. The outer crushing cylinder (39) has a discharge collection auger (44) that abuts against the lowest point of the inner wall of the outer crushing cylinder (39) and a discharge collection pipe (45) installed on the right side of the outer crushing cylinder (39). A reciprocating screw (46) located below the two rolling rollers (43) is rotatably installed between the left and right inner walls of the rolling outer cylinder (39). A scraper (47) that fits against the outer surface of the two rolling rollers (43) is threaded onto the reciprocating screw (46). The left ends of the two rollers (43) are coaxially fixed with a roller gear (48) located outside the roller outer cylinder (39). The two roller gears (48) mesh with each other. The left ends of one of the roller gears (48), the roller fabric auger (41), the discharge collection auger (44), and the reciprocating screw (46) are coaxially fixed with a drive sprocket (49). A drive chain (50) is connected between the multiple drive sprockets (49).

8. The method of using the waste collection device for phosphogypsum processing according to claim 7, characterized in that, The specific steps are as follows: a. The feed pipe discharges phosphogypsum waste into the bottom of the outer cylinder (1). The circumferentially moving crushing device (21) can crush the clumped waste. The lifting auger (7) lifts the waste from the bottom of the outer cylinder (1) to the top of the outer cylinder (1). Then the waste is scattered by the rotating spreading cone (9) onto the inner wall of the outer cylinder (1) and falls into the interior of multiple drying arc plates (10). b. Hot air can be blown into the waste residue inside the multiple drying arc plates (10) by multiple drying air knives (11) to dry it. The waste residue can be blown into the drying arc plates (10) to increase the time it is blown by hot air and can be crushed again by the spikes (102). The dried waste residue falls to the bottom of the outer cylinder (1) and can be lifted and dried repeatedly. c. The dried and crushed waste residue can be discharged into the crushing cloth hopper (40) inside the crushing outer cylinder (39) through the solenoid valve (101), and fall into the two crushing rollers (43) through the crushing discharge trough (42) to be crushed into powder. The crushing cloth auger (41) can evenly distribute the waste residue to prevent the waste residue from accumulating under the solenoid valve (101). d. The waste residue crushed into powder by the rolling roller (43) can be discharged from the discharge collection pipe (45) through the discharge collection auger (44) for collection, while the scraper (47) moving back and forth below the two rolling rollers (43) can scrape off the waste residue powder adhering to the surface of the rolling rollers (43).

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