An internally heated drying fluidized bed

Abstract

The application relates to the technical field of chemical drying equipment, and discloses an internal heating type drying fluidized bed, which comprises a drying cavity, a bed surface movably arranged in the drying cavity, an arc-shaped cover arranged at the top of the drying cavity, a microwave heating pipe arranged in the arc-shaped cover, a connecting pipe connected to the top surface of the arc-shaped cover, a collecting device connected to one end of the connecting pipe, a pipeline group communicated with the bottom of the drying cavity, a hot air fan connected to one end of the pipeline group, a feeding cavity connected to the top surface of the drying cavity and communicated with the drying cavity through a material guiding opening, a screw arranged in the material guiding opening, and a first crushing roller and a second crushing roller arranged in the drying cavity in sequence. The screen moving assembly is arranged, the material on the bed surface can be screened and moved, the contact probability of the material and the holes is increased, the material can be blown up by the airflow in the holes, and the drying effect on the material is enhanced.

Description

Technical Field

[0001] This invention relates to the field of chemical drying equipment technology, specifically to an internally heated fluidized bed dryer. Background Technology

[0002] Fluidized bed drying technology is one of the most widely used drying methods in industry. It uses airflow to suspend solid particles and create a fluidized state, thereby achieving efficient heat and mass transfer. In recent years, with the increasing demands for drying efficiency and energy consumption from industries such as chemical, pharmaceutical, and food processing, traditional fluidized beds are facing challenges in terms of thermal efficiency and temperature uniformity.

[0003] Traditional fluidized bed dryers typically have holes on the bed surface for airflow. When material is placed on the bed surface, the airflow blows the material upward through the holes, causing it to float and thus increasing the drying effect. However, in actual use, there is a certain distance between the holes on the bed surface, and the bed surface is usually fixed inside the cavity. This makes it difficult for the material placed between the holes to come into contact with the airflow, making it difficult to blow it up and thus affecting the drying effect. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides an internally heated fluidized bed dryer, which solves the problem that in existing equipment, the material is not completely agitated when the airflow rises, thus affecting the material drying efficiency.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an internally heated fluidized bed dryer, comprising a drying chamber, a bed surface movably installed inside the drying chamber, an arc-shaped cover installed on the top of the drying chamber, a microwave heating tube installed inside the arc-shaped cover, a connecting pipe connected to the top surface of the arc-shaped cover, a collecting device connected to one end of the connecting pipe, a pipe assembly connected to the bottom of the drying chamber, a hot air blower connected to one end of the pipe assembly, a feeding chamber connected to the top surface of the drying chamber, and the feeding chamber and the drying chamber connected through a guide port, an auger installed inside the guide port, a first crushing roller and a second crushing roller sequentially installed inside the drying chamber, a linkage assembly connected to one end of the auger, a sieve plate installed inside the feeding chamber, a rotating rod installed inside the drying chamber, multiple striking rods fixedly connected to the outer surface of the rotating rod, a cavity opened inside the drying chamber, and a sieving assembly installed inside the cavity.

[0006] Through the above technical solution: when the material is introduced into the top of the bed, the sieving component can drive the bed to move back and forth inside the drying chamber, thereby causing the top of the bed to sieve. The sieved material can change its position on the top of the bed, thereby increasing the probability that the material coincides with the openings on the top of the bed, thus increasing the effect of airflow on the material and directly enhancing the drying efficiency of the material.

[0007] Preferably, the screening assembly includes a telescopic rod, an undulating seat, a transmission rod, and an undulating rod. The two transmission rods are rotatably mounted on one side of the bed surface via bearings. The telescopic rod is fixedly mounted on one end of the transmission rod, and the undulating rod is fixedly mounted on both sides of the transmission rod. The undulating seat is disposed inside the cavity, and a wave-shaped groove is provided on one side of the undulating seat, with the undulating rod extending into the inner side of the groove.

[0008] Preferably, two fixing plates are fixedly installed inside the cavity, and the undulating seat is fixedly installed on the inner side of the fixing plates. The inner wall of the telescopic rod is provided with a sliding groove, and a slider is slidably installed inside the sliding groove. A second spring is installed inside the telescopic rod.

[0009] Preferably, one end of each of the two telescopic rods is fixedly connected to a second worm gear, the tops of the two second worm gears are meshed with a second worm, a third worm gear is fixedly connected between the two second worms, one side of the third worm gear is meshed with a third worm, the top of the third worm is fixedly connected to a second bevel gear, one side of the second bevel gear is meshed with a first bevel gear, and one end of the rotating rod is fixedly installed on one side of the first bevel gear.

[0010] Preferably, a drive seat is fixedly installed on one side of the drying chamber, and a first motor is fixedly installed on the outer surface of the drying chamber by a fixing bracket, and the output end of the first motor extends into the interior of the drive seat and is connected to the third worm gear.

[0011] Preferably, the linkage assembly includes a driving gear, a driven gear, a connecting belt, a first worm, and a first worm wheel. The first worm wheel is fixedly installed at one end of the auger, the first worm is disposed on the top of the first worm wheel, and the first worm wheel meshes with the first worm. The driving gear and the driven gear are respectively fixedly installed on one side of the first crushing roller and the second crushing roller. The end of the connecting belt is connected to the first worm and the driven gear respectively through pulleys.

[0012] Preferably, a second motor is fixedly installed on the outer surface of the feeding chamber by a fixing frame, and the output end of the second motor is connected to the drive gear. Guide plates are symmetrically installed inside the feeding chamber.

[0013] Preferably, a discharge port is provided on one side of the drying chamber, and a second suction machine is fixedly installed on the outer surface of the drying chamber by a fixing frame, and the second suction machine is connected to the end of the discharge port. An electric push rod is installed inside the drying chamber, and a sealing plate is connected to the telescopic end of the electric push rod. The sealing plate extends into the interior of the discharge port, and guide rods are symmetrically installed inside the sealing plate, with the bottom end of the guide rods connected to the sealing plate.

[0014] Preferably, the inner wall of the drying chamber is symmetrically provided with guide blocks, and guide grooves are provided on both sides of the bed surface.

[0015] Preferably, the top of the feeding chamber is provided with a feeding port, the bottom of the screen plate is symmetrically equipped with a vibration motor, the four corners of the bottom surface of the screen plate are fixedly connected with a first spring, the outer surface of the feeding chamber is fixedly installed with a first suction machine by a fixing frame, the top of the first suction machine is connected with a conveying pipe, and one end of the conveying pipe extends into the interior of the feeding port.

[0016] Working principle: The material is introduced into the feed chamber through the feed inlet. At the same time, the second motor is turned on, which drives the drive gear to rotate. The drive gear drives the driven gear to rotate, which in turn drives the first crushing roller and the second crushing roller to rotate relative to each other. This crushes the material entering the feed chamber. The crushed material falls onto the surface of the screen plate. The vibration motor is turned on, which drives the screen plate to vibrate, thereby screening the material. The screened material enters the feed inlet. When the driven gear rotates, it can drive the first worm to rotate through the transmission of the connecting belt. The first worm drives the first worm wheel to rotate, and the first worm wheel drives the auger to rotate. The auger can transport the material in the feed inlet to the inside of the drying chamber. The material entering the drying chamber can be placed on the top of the bed surface. Turn on the hot air blower, and the hot air blows hot air into the interior of the drying chamber through the pipe assembly. The hot air blows the material upward through the holes on the surface of the bed. The hot air blows the material, which makes the material float inside the drying chamber. At the same time, the microwave heating tube is turned on, which can circulate and heat the floating material, thereby enhancing the drying efficiency of the material. The first motor is turned on, which drives the third worm to rotate. The third worm, through the third worm wheel, drives the second worms on both sides to rotate. The second worms, through the second worm wheel, drive the telescopic rod to rotate. The telescopic rod drives the transmission rod to rotate. The transmission rod drives the undulating rod to rotate around the groove on the surface of the undulating seat, thereby causing the transmission rod to extend and retract at the center of the undulating seat. The transmission rod pushes and pulls the bed surface back and forth, thereby causing the bed surface to sieve. The bed surface can sieve the material on its top, thereby increasing the probability that the material on the top of the bed surface overlaps with the holes, enhancing the blowing effect on the material, and indirectly enhancing the drying efficiency of the material. When the third worm rotates, it can drive the second bevel gear to rotate. The second bevel gear drives the first bevel gear to rotate. The first bevel gear drives the rotating rod to rotate. The rotating rod drives the striking rod to rotate. The striking rod contacts the material, which can break up the agglomerated material, thereby further increasing the contact effect between the material and the heat medium, and enhancing the drying efficiency. After the material is dried, the second suction machine can be turned on to absorb the dried material on the bed and then discharge it, thus completing the discharge operation.

[0017] This invention provides an internally heated fluidized bed dryer. It has the following beneficial effects: 1. In this invention, a screening component is provided. During use, the rotation of the telescopic rod drives the transmission rod to rotate, which in turn drives the undulating rod to rotate on the wave-shaped groove on the surface of the undulating seat. This allows the transmission rod to extend and retract within the undulating seat. When the transmission rod extends and retracts, it pushes and pulls the bed surface back and forth within the drying chamber, thereby screening the material on the bed surface. This increases the probability of material contact with the holes, making it easier for the airflow within the holes to blow the material up, thus enhancing the drying effect.

[0018] 2. In this invention, a rotating rod and a striking rod are installed inside the drying chamber. When the airflow blows the material up, the rotating rod rotates, which drives the striking rod to rotate. The striking rod strikes the blown material, thereby breaking up the condensed particulate material, increasing the contact effect between the material and the heat medium, and enhancing the drying efficiency of the material.

[0019] 3. In this invention, a feeding chamber is set at the top of the drying chamber, and a first crushing roller and a second crushing roller are set inside the feeding chamber. Through the relative rotation of the first crushing roller and the second crushing roller, materials with larger particle sizes can be crushed, thereby pre-treating the materials before drying and enhancing the functionality of the equipment.

[0020] 4. This invention features a screen plate inside the feeding chamber, with a vibrating motor installed at the bottom of the screen plate. The vibrating motor vibrates the screen plate, thereby screening the crushed material. A first suction machine is also included. When the first suction machine is activated, the incompletely crushed material is drawn into the conveying pipe and then transferred to the feed inlet for secondary crushing. This increases the uniformity of the material particles and enhances the quality of subsequent drying and discharge.

[0021] 5. By setting up a linkage component, the present invention can drive the auger to rotate while crushing the material. The auger can transport the crushed material into the interior of the drying chamber, thereby preventing the material from accumulating inside the feed inlet and causing blockage during feeding. Attached Figure Description

[0022] Figure 1 This is a three-dimensional schematic diagram of the present invention; Figure 2 This is a side view schematic diagram of the present invention; Figure 3 This is a schematic diagram of the internal structure of the present invention; Figure 4 This is a schematic diagram of the bed surface position according to the present invention; Figure 5 This is a schematic diagram of the screening assembly of the present invention; Figure 6 This is a cross-sectional schematic diagram of the telescopic rod of the present invention; Figure 7 This is a schematic diagram showing the position of the vibration motor of the present invention; Figure 8 This is a schematic diagram of the linkage component of the present invention. Figure 9 This is a schematic diagram showing the location of the sealing plate of the present invention.

[0023] The components include: 1. Drying chamber; 2. Hot air blower; 3. Piping assembly; 4. Arc-shaped cover; 5. Connecting pipe; 6. Collection device; 7. Feeding chamber; 8. Feed inlet; 9. First suction feeder; 10. Conveying pipe; 11. Second suction feeder; 12. Drive base; 13. First motor; 14. Rotating rod; 15. Striking rod; 16. Discharge port; 17. Bed surface; 18. Guide plate; 19. Screen plate; 20. First crushing roller; 21. Second crushing roller; 22. Guide port; 23. Cavity; 24. Vibrating motor; 25. First spring; 26. Drive gear; 27. 28. Driven gear; 29. ​​Connecting belt; 30. First worm gear; 31. First worm; 32. Screwdriver; 33. Second motor; 34. Electric actuator; 35. Guide rod; 36. Sealing plate; 37. Guide block; 38. Guide groove; 39. Fixing plate; 40. Telescopic rod; 41. Transmission rod; 42. Second worm gear; 43. Third worm gear; 44. Third worm; 45. First bevel gear; 46. Second bevel gear; 47. Slide groove; 48. Slider; 49. Second spring; 50. Elevating seat; 51. Elevating rod; 52. Microwave heating tube. Detailed Implementation

[0024] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] Please see the appendix Figure 1 Appendix Figure 3 and attached Figure 8This invention provides an internally heated fluidized bed dryer, comprising a drying chamber 1, a bed surface 17 movably installed inside the drying chamber 1, an arc-shaped cover 4 installed on the top of the drying chamber 1, a microwave heating tube 52 installed inside the arc-shaped cover 4, a connecting pipe 5 connected to the top surface of the arc-shaped cover 4, a collecting device 6 connected to one end of the connecting pipe 5, a pipe assembly 3 connected to the bottom of the drying chamber 1, a hot air blower 2 connected to one end of the pipe assembly 3, a feeding chamber 7 connected to the top surface of the drying chamber 1, and the feeding chamber 7 and the drying chamber 1 connected through a guide port 22, an auger 31 provided inside the guide port 22, a first crushing roller 20 and a second crushing roller 21 sequentially provided inside the drying chamber 1, a linkage assembly connected to one end of the auger 31, a sieve plate 19 provided inside the feeding chamber 7, a rotating rod 14 provided inside the drying chamber 1, multiple striking rods 15 fixedly connected to the outer surface of the rotating rod 14, and a cavity 23 opened inside the drying chamber 1, a sieving assembly installed inside the cavity 23.

[0026] Specifically, this equipment, through the coordinated functions of the drying chamber 1, the arc-shaped cover 4, the pipe assembly 3, the hot air blower 2, the connecting pipe 5, and the collecting device 6, can form the basic function of the main body of the fluidized bed drying equipment. During use, granular material is introduced into the drying chamber 1, where it rests on the top surface of the bed 17. When the hot air blower 2 is turned on, it blows hot air into the pipe assembly 3, which is connected to the bottom of the drying chamber 1. This allows the hot air to be blown upwards. The hot air passes through the holes on the surface of the bed 17, continuously blowing upwards, thus agitating the material on the bed 17. Through the action of the hot airflow, the material moves on the bed 17. The material is formed into a fluid-like motion state, which increases the contact area between the material and the heat medium, thereby enhancing the drying efficiency. When water vapor is generated in the dried material, it can enter the collection device 6 through the arc-shaped cover 4 for collection and treatment. The basic operation process of this equipment is similar to that of a traditional fluidized bed dryer, so the structure and model of the main components will not be described in detail here. The arc-shaped cover 4 is equipped with a microwave heating tube 52. When the material floats up and is separated from the hot air, the microwave heating tube 52 can be turned on, thereby realizing multi-stage heating of hot air and microwaves, further enhancing the drying efficiency of the material.

[0027] Please see the appendix Figure 5 The screening assembly includes a telescopic rod 39, an undulating seat 50, a transmission rod 40, and an undulating rod 51. The two transmission rods 40 are rotatably mounted on one side of the bed surface 17 via bearings. The telescopic rod 39 is fixedly mounted on one end of the transmission rod 40. The undulating rod 51 is fixedly mounted on both sides of the transmission rod 40. The undulating seat 50 is located inside the cavity 23, and a wave-shaped groove is opened on one side of the undulating seat 50. The undulating rod 51 extends into the inside of the groove.

[0028] Specifically, the surface of the undulating seat 50 is provided with a wavy groove, and one end of the undulating rod 51 extends into the wavy groove 47. The undulating rod 51 is slidably connected to the surface of the undulating seat 50. Therefore, when the telescopic rod 39 drives the transmission rod 40 to rotate, the transmission rod 40 can drive the undulating rod 51 to rotate along the wavy groove on the surface of the undulating seat 50, thereby causing the undulating rod 51 to undulate in a wavy manner. The transmission rod 40 is movably installed at the center of the undulating seat 50. Therefore, when the undulating rod 51 rotates, it can drive the transmission rod 40 to extend and retract back and forth at the center of the undulating seat 50. Since one end of the transmission rod 40 is rotatably connected to one side of the bed surface 17 via a bearing, and the shaft... The bearing is fixedly installed on one side of the bed surface 17. Therefore, when the transmission rod 40 rotates, it can rotate on one side of the bed surface 17 through the bearing. When the undulating rod 51 extends and retracts, it can pull the bed surface 17 back and forth inside the drying chamber 1. When the bed surface 17 moves back and forth, it can screen the material at the top. After being screened, the material at the top changes its position on the bed surface 17, thereby preventing the material from remaining stationary on the bed surface 17 and causing the airflow to not contact the material between the holes on the surface of the bed surface 17. Screening the material back and forth can increase the probability of the material overlapping with the holes, thereby making it easier for the airflow through the holes to blow the material upward, enhancing the drying effect of the material.

[0029] Please see the appendix Figure 5 and attached Figure 6 Two fixed plates 38 are fixedly installed inside the cavity 23, and the undulating seat 50 is fixedly installed inside the fixed plate 38. The inner wall of the telescopic rod 39 is provided with a sliding groove 47, and a slider 48 is slidably installed inside the sliding groove 47. A second spring 49 is installed inside the telescopic rod 39.

[0030] Specifically, the undulating seat 50 is fixedly installed on one side of the fixed plate 38, thus ensuring the stability of the undulating seat 50. The telescopic rod 39 is divided into an inner rod and an outer rod, and the two ends of the second spring 49 are respectively connected to the inner rod and the outer rod. Therefore, when the telescopic rod 39 drives the transmission rod 40 to rotate, which in turn drives the undulating rod 51 to rotate along the wave-shaped groove on the surface of the undulating seat 50, the extension and retraction of the transmission rod 40 can drive the extension and retraction of the telescopic rod 39. When the telescopic rod 39 extends and retracts, the inner rod of the telescopic rod 39 can press the second spring 49 inward, and at the same time, the second spring 49, through its elasticity... The potential energy can push the inner rod to move outward, thereby transmitting the resetting force to the transmission rod 40, ensuring the normal screening movement of the bed surface 17. Furthermore, the inner wall of the outer rod of the telescopic rod 39 is provided with a sliding groove 47, and the slider 48 is fixedly installed on both sides of the inner rod of the telescopic rod 39. Therefore, when the telescopic rod 39 extends or retracts, the slider 48 can slide inside the sliding groove 47, thereby increasing the stability and directionality of the extension and retraction of the telescopic rod 39. At the same time, the sliding groove 47 can limit the slider 48. When the outer rod of the telescopic rod 39 rotates, it can synchronously drive the inner rod of the telescopic rod 39 to rotate.

[0031] Please see the appendix Figure 4Two telescopic rods 39 are fixedly connected to one end of a second worm gear 41. The tops of the two second worm gears 41 are meshed with a second worm 42. A third worm gear 43 is fixedly connected between the two second worm gears 42. A third worm 44 is meshed with one side of the third worm gear 43. A second bevel gear 46 is fixedly connected to the top of the third worm 44. A first bevel gear 45 is meshed with one side of the second bevel gear 46. One end of the rotating rod 14 is fixedly installed on one side of the first bevel gear 45.

[0032] Specifically, when the third worm gear 43 rotates, it drives the second bevel gear 46 at the top to rotate. The second bevel gear 46 drives the first bevel gear 45 to rotate. The first bevel gear 45 drives the rotating rod 14 to rotate. The rotating rod 14 drives the striking rod 15 to rotate inside the drying chamber 1. The rotating striking rod 15 can strike the floating material, thereby breaking up the agglomerated material. The broken material can increase its contact area with the heat medium, thus enhancing the drying efficiency. At the same time, when the third worm 44 rotates, it drives the third worm gear 43 to rotate. The third worm gear 43 drives the second worm gears 42 on both sides to rotate. The second worm gears 42 drive the second worm gear 41 to rotate. The second worm gear 41 drives the two telescopic rods 39 to rotate, thereby screening the bed surface 17. This enhances the linkage during the use of the equipment, and the linkage effect is tight, enhancing the functionality.

[0033] Please see the appendix Figure 2 A drive seat 12 is fixedly installed on one side of the drying chamber 1. A first motor 13 is fixedly installed on the outer surface of the drying chamber 1 by a fixing bracket. The output end of the first motor 13 extends into the interior of the drive seat 12 and is connected to the third worm gear 44.

[0034] Specifically, the first motor 13 can drive the third worm 44 to rotate, and the second bevel gear 46, the second worm 42 and the second worm wheel 41 are all rotatably mounted inside the drive seat 12 via a rotating shaft, thus ensuring the stability of the transmission.

[0035] Please see the appendix Figure 8 The linkage assembly includes a drive gear 26, a driven gear 27, a connecting belt 28, a first worm 30, and a first worm wheel 29. The first worm wheel 29 is fixedly installed at one end of the auger 31. The first worm 30 is located on top of the first worm wheel 29, and the first worm wheel 29 is meshed with the first worm 30. The drive gear 26 and the driven gear 27 are respectively fixedly installed on one side of the first crushing roller 20 and the second crushing roller 21. The end of the connecting belt 28 is connected to the first worm 30 and the driven gear 27 respectively through pulleys.

[0036] Specifically, when the drive gear 26 rotates, it drives the driven gear 27 to rotate. The synchronous rotation of the drive gear 26 and the driven gear 27 drives the first crushing roller 20 and the second crushing roller 21 to rotate relative to each other, thereby crushing the material to be dried. When the material is crushed to a specified particle size, it is easy for the airflow to blow it up, preventing the material particles from settling due to excessive size, which would lead to uneven drying. When the driven gear 27 rotates, it drives the first worm gear 30 to rotate through the transmission of the connecting belt 28. The first worm gear 30 drives the first worm wheel 29 to rotate, which in turn drives the auger 31 to rotate. The auger 31 is installed inside the feed inlet 22. When the auger 31 rotates, it can transport the material entering the feed inlet 22 into the drying chamber 1, thereby preventing the material from accumulating inside the feed inlet 22 and causing blockage. At the same time, it further enhances the linkage during the use of this equipment.

[0037] Please see the appendix Figure 3 and attached Figure 8 The outer surface of the feeding chamber 7 is fixedly mounted with a second motor 32 by a fixing bracket, and the output end of the second motor 32 is connected to the drive gear 26. The inside of the feeding chamber 7 is symmetrically mounted with guide plates 18.

[0038] Specifically, the second motor 32 can drive the drive gear 26 to rotate. The surfaces of the two guide plates 18 are sloped, and there is a gap between the two guide plates 18. The guide port 22 is located below the gap. Therefore, after the material is crushed, it can enter the interior of the guide port 22 through the guide plate 18, which facilitates the conveying of the material.

[0039] Please see the appendix Figure 2 Appendix Figure 3 and attached Figure 9 A discharge port 16 is provided on one side of the drying chamber 1. A second suction machine 11 is fixedly installed on the outer surface of the drying chamber 1 by a fixing frame, and the second suction machine 11 is connected to the end of the discharge port 16. An electric push rod 33 is installed inside the drying chamber 1. The telescopic end of the electric push rod 33 is connected to a sealing plate 35, and the sealing plate 35 extends into the interior of the discharge port 16. Guide rods 34 are symmetrically installed inside the sealing plate 35, and the bottom end of the guide rods 34 is connected to the sealing plate 35.

[0040] Specifically, the suction machine used in this device is a vacuum suction machine, which is equipped with a vacuum pump. Turning on the internal vacuum pump creates a negative pressure environment inside, which adsorbs the material and transports it through pipelines. It is widely used in various fields, so its specific structure and principle will not be described in detail here. The suction port of the second suction machine 11 is directly opposite the discharge port 16. Therefore, when the second suction machine 11 is turned on, the material placed on the bed surface 17 can be adsorbed. The material adsorbed into the second suction machine 11 is transported to the external environment, thereby completing the discharge work of this equipment. When drying the material, the electric push rod 33 can be turned on. The electric push rod 33 can push the sealing plate 35 to move inside the discharge port 16. By moving the sealing plate 35, the discharge port 16 can be blocked, thereby preventing the material from entering the discharge port 16 during the drying operation. The guide rod 34 is telescopic, so when the sealing plate 35 moves, it can drive the guide rod 34 to extend and retract accordingly, thereby increasing the stability and directionality of the sealing plate 35 when it moves.

[0041] Please see the appendix Figure 4 and attached Figure 9 The inner wall of the drying chamber 1 is symmetrically provided with guide blocks 36, and guide grooves 37 are provided on both sides of the bed surface 17.

[0042] Specifically, the guide block 36 is placed inside the guide groove 37 and is slidably connected to the guide groove 37. Therefore, when the bed surface 17 moves left and right, the guide block 36 can slide inside the guide groove 37, thereby increasing the stability and directionality of the bed surface 17 during the screen movement.

[0043] Please see the appendix Figure 1 and attached Figure 7 The top of the feeding chamber 7 is provided with a feeding port 8. Vibration motors 24 are symmetrically installed on the bottom of the screen plate 19. First springs 25 are fixedly connected to the four corners of the bottom surface of the screen plate 19. The outer surface of the feeding chamber 7 is fixedly installed with a first suction machine 9 by a fixing frame. The top of the first suction machine 9 is connected to a conveying pipe 10, and one end of the conveying pipe 10 extends into the interior of the feeding port 8.

[0044] Specifically, material can be added into the feed chamber 7 through the feed inlet 8. After the crushing roller crushes the material, it falls to the top of the screen plate 19. At this time, the vibration motor 24 can be turned on, which drives the screen plate 19 to vibrate. The vibration of the screen plate 19 increases the screening effect of the material on top. The screened material falls into the guide port 22, and the incompletely crushed material can remain on the top of the screen plate 19. At this time, the first suction machine 9 can be turned on, which can absorb the material remaining on the screen plate 19 into the conveying pipe 10, and then the conveying pipe 10 transfers it to the feed inlet 8. This allows for secondary recycling and crushing of the material, enhancing the functionality of the equipment.

[0045] In this embodiment, an internally heated fluidized bed dryer can be used by placing the equipment in a designated position and introducing the material into the feed chamber 7 through the feed inlet 8. At the same time, the second motor 32 is turned on, which drives the drive gear 26 to rotate. The drive gear 26 drives the driven gear 27 to rotate, thereby driving the first crushing roller 20 and the second crushing roller 21 to rotate relative to each other, thus crushing the material entering the feed chamber 7. The crushed material can fall onto the surface of the screen plate 19. The vibration motor 24 is turned on, which drives the screen plate 19 to vibrate, thereby screening the material. The screened material enters the feed inlet 22. The material remaining on the screen plate 19 can be sucked into the feed inlet 8 by the first suction machine 9 for secondary crushing. When the driven gear 27 rotates, it can drive the first worm 30 to rotate through the transmission of the connecting belt 28. The first worm 30 drives the first worm wheel 29 to rotate, and the first worm wheel 29 drives the auger 31 to rotate. The auger 31 can transport the material in the feed inlet 22 to the inside of the drying chamber 1. The material entering the drying chamber 1 can be placed on the top of the bed surface 17. Turn on the hot air blower 2. The hot air blower 2 blows hot air into the drying chamber 1 through the pipe assembly 3. The hot air blows the material upward through the holes on the surface of the bed 17. The hot air blows the material, which makes the material float inside the drying chamber 1. Simultaneously turn on the microwave heating tube 52, which can circulate and heat the floating material, thereby enhancing the drying efficiency of the material. When the first motor 13 is turned on, it drives the third worm gear 44 to rotate. The third worm gear 44 drives the third worm wheel 43 to rotate. The third worm wheel 43 drives the second worm gears 42 on both sides to rotate. The second worm gears 42 drive the second worm wheels 41 to rotate. The second worm wheels 41 drive the telescopic rod 39 to rotate. The telescopic rod 39 drives the transmission rod 40 to rotate. The transmission rod 40 drives the undulating rod 51 to rotate around the groove on the surface of the undulating seat 50, thereby causing the transmission rod 40 to extend and retract at the center of the undulating seat 50. The transmission rod 40 pushes and pulls the bed surface 17 back and forth, thereby causing the bed surface 17 to screen. The material at the top of the bed 17 can be screened, thereby increasing the probability that the material at the top of the bed 17 overlaps with the holes, enhancing the blowing effect on the material, and indirectly enhancing the drying efficiency of the material. When the third worm gear 44 rotates, it can drive the second bevel gear 46 to rotate, the second bevel gear 46 drives the first bevel gear 45 to rotate, the first bevel gear 45 drives the rotating rod 14 to rotate, the rotating rod 14 drives the striking rod 15 to rotate, the striking rod 15 contacts the material, and can break up the agglomerated material, thereby further increasing the contact effect between the material and the heat medium, and enhancing the drying efficiency. After the material is dried, the second suction machine 11 can be turned on. The second suction machine 11 will adsorb the dried material on the bed surface 17 and then discharge it, thus completing the discharge operation.

[0046] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An internally heated fluidized bed dryer, comprising a drying chamber (1), characterized in that, The drying chamber (1) is equipped with a movable bed surface (17). The top of the drying chamber (1) is equipped with an arc-shaped cover (4). A microwave heating tube (52) is installed inside the arc-shaped cover (4). A connecting pipe (5) is connected to the top surface of the arc-shaped cover (4). One end of the connecting pipe (5) is connected to a collecting device (6). The bottom of the drying chamber (1) is connected to a pipe assembly (3). One end of the pipe assembly (3) is connected to a hot air blower (2). The top surface of the drying chamber (1) is connected to a feeding chamber (7). The feeding chamber (7) and the drying chamber (1) are connected by a guide. The feed inlet (22) is connected, and the inside of the feed inlet (22) is provided with an auger (31). The inside of the drying chamber (1) is provided with a first crushing roller (20) and a second crushing roller (21) in sequence. One end of the auger (31) is connected to a linkage component. The inside of the feed chamber (7) is provided with a sieve plate (19). The inside of the drying chamber (1) is provided with a rotating rod (14). Multiple striking rods (15) are fixedly connected to the outer surface of the rotating rod (14). The inside of the drying chamber (1) is provided with a cavity (23). The inside of the cavity (23) is equipped with a sieving component. The screening assembly includes a telescopic rod (39), an undulating seat (50), a transmission rod (40), and an undulating rod (51). The two transmission rods (40) are rotatably mounted on one side of the bed surface (17) via bearings. The telescopic rod (39) is fixedly mounted on one end of the transmission rod (40). The undulating rod (51) is fixedly mounted on both sides of the transmission rod (40). The undulating seat (50) is located inside the cavity (23), and a wave-shaped groove is provided on one side of the undulating seat (50). The undulating rod (51) extends into the inside of the groove. The linkage assembly includes a drive gear (26), a driven gear (27), a connecting belt (28), a first worm (30), and a first worm wheel (29). The first worm wheel (29) is fixedly installed at one end of the auger (31). The first worm (30) is located on the top of the first worm wheel (29), and the first worm wheel (29) meshes with the first worm (30). The drive gear (26) and the driven gear (27) are respectively fixedly installed on one side of the first crushing roller (20) and the second crushing roller (21). The end of the connecting belt (28) is connected to the first worm (30) and the driven gear (27) respectively through pulleys.

2. The internally heated fluidized bed dryer according to claim 1, characterized in that, Two fixed plates (38) are fixedly installed inside the cavity (23), and the undulating seat (50) is fixedly installed on the inner side of the fixed plate (38). The inner wall of the telescopic rod (39) is provided with a sliding groove (47), and a slider (48) is slidably installed inside the sliding groove (47). A second spring (49) is installed inside the telescopic rod (39).

3. The internally heated fluidized bed dryer according to claim 1, characterized in that, One end of each of the two telescopic rods (39) is fixedly connected to a second worm gear (41), the top of each of the two second worm gears (41) is meshed with a second worm (42), a third worm gear (43) is fixedly connected between the two second worms (42), a third worm (44) is meshed with one side of the third worm gear (43), a second bevel gear (46) is fixedly connected to the top of the third worm (44), a first bevel gear (45) is meshed with one side of the second bevel gear (46), and one end of the rotating rod (14) is fixedly installed on one side of the first bevel gear (45).

4. The internally heated fluidized bed dryer according to claim 3, characterized in that, A drive seat (12) is fixedly installed on one side of the drying chamber (1). A first motor (13) is fixedly installed on the outer surface of the drying chamber (1) by a fixing bracket. The output end of the first motor (13) extends into the interior of the drive seat (12) and is connected to the third worm gear (44).

5. The internally heated fluidized bed dryer according to claim 4, characterized in that, The outer surface of the feeding chamber (7) is fixedly mounted with a second motor (32) by a fixing bracket, and the output end of the second motor (32) is connected to the drive gear (26). The inside of the feeding chamber (7) is symmetrically mounted with guide plates (18).

6. The internally heated fluidized bed dryer according to claim 1, characterized in that, A discharge port (16) is provided on one side of the drying chamber (1). A second suction machine (11) is fixedly installed on the outer surface of the drying chamber (1) by a fixing frame. The second suction machine (11) is connected to the end of the discharge port (16). An electric push rod (33) is installed inside the drying chamber (1). A sealing plate (35) is connected to the telescopic end of the electric push rod (33). The sealing plate (35) extends into the interior of the discharge port (16). Guide rods (34) are symmetrically installed inside the sealing plate (35). The bottom end of the guide rod (34) is connected to the sealing plate (35).

7. The internally heated fluidized bed dryer according to claim 1, characterized in that, The inner wall of the drying chamber (1) is symmetrically provided with guide blocks (36), and guide grooves (37) are provided on both sides of the bed surface (17).

8. The internally heated fluidized bed dryer according to claim 1, characterized in that: The top of the feeding chamber (7) is provided with a feeding port (8), and the bottom of the screen plate (19) is symmetrically equipped with a vibration motor (24). The four corners of the bottom surface of the screen plate (19) are fixedly connected with a first spring (25). The outer surface of the feeding chamber (7) is fixedly installed with a first suction machine (9) by a fixing frame. The top of the first suction machine (9) is connected with a conveying pipe (10), and one end of the conveying pipe (10) extends into the interior of the feeding port (8).

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