An automated alumina powder drying line and method of use thereof

Abstract

The application discloses an automatic drying line for alumina powder and a use method thereof, and belongs to the technical field of drying equipment. The automatic drying line for alumina powder comprises a drying box body, an electric heating pipe embedded in the inner side wall of the drying box body, a driving shaft, an intermittent feeding mechanism and a hollow dispersing plate. The driving shaft is installed at the top of the drying box body and extends downward through the drying box body. The intermittent feeding mechanism is installed between the top of the drying box body and the outer wall of the upper section of the driving shaft and is used for feeding alumina powder raw materials. The hollow dispersing plate is fixedly installed on the inner side wall of the drying box body close to the top and avoids the driving shaft. The spiral blade is fixedly installed on the shaft wall of the driving shaft in the drying box body. The application realizes sufficient contact between the drying mechanism and the to-be-dried raw materials, can cyclically dry the stacked raw materials, and guarantees stable drying effect of the alumina powder.

Description

Technical Field

[0001] This invention relates to the field of drying equipment technology, and in particular to an automated alumina powder drying line and its usage method. Background Technology

[0002] Alumina powder is a white, ultrafine powder, an inorganic oxide. It is characterized by high purity, high whiteness, high specific gravity, good thermal stability, uniform particle size distribution, and good flowability. The production process of alumina powder is becoming increasingly advanced, now capable of producing alumina powder with a particle size of less than 1 micrometer. It can be added to aqueous liquids of various acrylic resins, polyurethane resins, epoxy resins, melamine resins, silicone-acrylic emulsions, etc., to improve the hardness of the resin. This nano-alumina liquid can be in any solvent, whether aqueous or oil-based.

[0003] In the prior art, invention patent application number CN202210008130.4 discloses: "A drying device for aluminum hydroxide micro powder, relating to the field of aluminum hydroxide micro powder drying technology, including a device body, a feeding mechanism installed at the top of the device body, and a primary drying component and a secondary drying component installed inside the device body. Circulating ventilation components are installed on both sides of the device body. The primary drying component includes a bracket fixedly installed on the inner wall of the device body near the top, and a drying tray is rotatably connected to the inner side of the bracket via a bearing. This invention utilizes an air outlet ring pipe in conjunction with a drying tray to perform preliminary drying treatment on aluminum hydroxide micro powder. Using a drying vortex, hot air can carry the material into the drying vortex, and with multiple spiral wall grooves, the material can fully contact the inner wall of the drying vortex. Combined with the heating effect of the heating arc wire, further drying treatment of the material is achieved." However, the following defects still exist: Although multi-stage drying can be achieved, insufficient contact between alumina powder and drying components can easily lead to the accumulation of incompletely dried raw materials, affecting drying efficiency. The inability to achieve cyclic drying of alumina powder is detrimental to ensuring stable drying quality. Summary of the Invention

[0004] The purpose of this invention is to solve the problems in the prior art that, although multi-stage drying can be achieved, the contact between alumina powder and the drying components is insufficient, which easily leads to the accumulation of incompletely dried raw materials and affects drying efficiency; and the inability to achieve cyclic drying of alumina powder is not conducive to ensuring stable drying quality. Therefore, an automated alumina powder drying line is proposed.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: An automated alumina powder drying line includes a drying chamber and heating elements embedded in the inner wall of the drying chamber, and further includes: A drive shaft is mounted on the top of the drying chamber and its output end extends downward through the drying chamber. An intermittent feeding mechanism is installed between the top of the drying chamber and the upper outer wall of the drive shaft for feeding alumina powder raw materials; A perforated dispersion plate is fixedly installed on the inner side wall of the drying chamber near the top, and the perforated dispersion plate avoids the drive shaft. The spiral blades are fixedly mounted on the shaft wall inside the drying chamber, where the drive shaft is located. A lifting tube is fixedly installed in the middle of the hollowed-out dispersion plate, and the lifting tube covers the outside of the spiral blades; Evaporation plates are rotatably connected to the inner wall of the drying chamber, and adjacent evaporation plates are staggered. in, The evaporation plate is provided with an air inlet and an air outlet, and the air inlet and the air outlet are respectively connected to an air inlet pipe and an air outlet pipe extending outward through the drying chamber. The air inlet pipe and the air outlet pipe located between adjacent evaporation plates on the same side of the drying chamber are interconnected, and the air inlet pipe and the air outlet pipe are provided with solenoid valves. A crushing assembly is installed in the lower chamber of the drying chamber; A transmission ring is slidably connected to the outer wall of the lifting tube, and a connecting rod is connected between adjacent transmission rings. The transmission ring is slidably engaged with the evaporator plate. A retention drying component is installed at the swing end of the evaporation plate to slow down the falling speed of alumina powder on the evaporation plate. A reciprocating lifting assembly is installed at one end of the drive shaft that passes through the drying chamber, and the lifting end of the reciprocating lifting assembly passes through the drying chamber and is fixedly connected to the transmission ring.

[0006] Preferably, the intermittent feeding mechanism includes a transmission gear sleeved on the upper section of the drive shaft, a driven gear rotatably connected to the inner wall of the top of the drying chamber and meshing with the transmission gear, a toothed ring rotatably connected to the inner wall of the top of the drying chamber and meshing with the driven gear, material discharge holes evenly opened on the toothed ring, a material discharge pipe fixedly installed on the top of the drying chamber and corresponding to the material discharge holes, and a storage hopper fixedly installed at the end of the material discharge pipe away from the drying chamber.

[0007] Preferably, a driven rod is fixedly connected to the bottom of the driven gear, and a uniformly distributed brush strip is fixedly connected to the outer wall of the driven rod. The brush strip abuts against the hollowed-out dispersion plate, and the contact surface between the hollowed-out dispersion plate and the alumina powder is a slope.

[0008] Preferably, the crushing assembly includes a drive rod rotatably mounted on the inner side wall of the drying chamber and crushing support rods uniformly mounted on the drive rod wall.

[0009] Preferably, the evaporator plate adopts a U-shaped structure, and a sliding groove is provided on the inner side wall of the vertical section of the evaporator plate. A slider is slidably connected in the sliding groove, and the end of the slider away from the sliding groove is rotatably connected to the transmission ring.

[0010] Preferably, the reciprocating lifting assembly includes a mounting cylinder fixedly installed at the bottom of the drying chamber and covering the outer side of the lower section of the drive shaft, a cylindrical cam fixedly installed at the end of the drive shaft located in the inner cavity of the mounting cylinder, a locking groove formed on the cylindrical cam, a driven roller locked in the locking groove, a U-shaped frame slidably connected to the inner wall of the mounting cylinder and rotatably connected to the driven roller, an L-shaped rod fixedly installed on the horizontal section of the U-shaped frame and extending outward through the mounting cylinder, and a lifting rod fixedly connected between the transmission ring and the L-shaped rod.

[0011] Preferably, the retention drying assembly includes a mounting frame installed on the swing end of the evaporation plate, a first rotating shaft and a second rotating shaft rotatably mounted on the mounting frame, a first drying roller and a second drying roller sleeved on the outer walls of the first rotating shaft and the second rotating shaft, and a transmission assembly installed between the end of the first rotating shaft and the second rotating shaft away from the mounting frame and the slider.

[0012] Preferably, the transmission assembly includes a first synchronous gear and a second synchronous gear fixedly installed on the ends of the first and second rotating shafts away from the mounting frame and meshing with each other, a take-up wheel installed on the end of the first synchronous gear away from the first rotating shaft, a take-up rope installed between the take-up wheel and the slider, and a torsion spring fixedly connected between the mounting frame and the first drying roller and sleeved on the outer wall of the first rotating shaft. The first and second synchronous gears are covered with protective shells.

[0013] Preferably, an exhaust port is provided on the outer side wall near the top of the drying chamber, and a moisture-absorbing box is installed at the exhaust port.

[0014] A method for using an automated alumina powder drying line includes the following steps: S1: First, control the start of the electric heating tube, the first drying roller and the second drying roller, and at the same time open the solenoid valve on the air inlet pipe to introduce steam into the evaporation plate to preheat the inner cavity of the drying chamber, and at the same time send the alumina powder to be dried into the storage hopper. S2: After the above preparations are completed, turn on the motor on the drive shaft. The drive shaft rotates and drives the transmission gear to rotate. When the transmission gear rotates, it drives the driven gear to rotate. When the driven gear rotates, it drives the gear ring to rotate. During the rotation of the gear ring, the discharge hole on the gear ring intermittently aligns with the discharge port of the discharge pipe, and then the alumina powder in the storage hopper intermittently enters the drying chamber. S3: Alumina powder falls onto the slope of the perforated dispersion plate through the feeding hole, and then slowly slides down under the action of gravity. During the falling process, the drying chamber after preheating performs preliminary drying on it. The alumina powder falls onto the surface of the evaporation plate through the perforation of the perforated dispersion plate. The evaporation plate after preheating performs secondary drying on the alumina powder that falls on the surface of the evaporation plate, which can also increase the residence time of the falling alumina powder. S4: While the drive shaft rotates, it drives the cylindrical cam to rotate, which in turn drives the driven roller to move along the locking groove, thereby realizing the reciprocating movement of the U-shaped frame. This, in turn, drives the lifting rod connected to the L-shaped rod to reciprocate up and down. During the reciprocating up and down movement of the lifting rod, it drives the transmission ring to reciprocate up and down along the lifting tube, which in turn drives the evaporator plate to swing back and forth. When the lifting rod rises to the highest point, the transmission ring drives the slider to slide along the slide groove, raising the evaporator plate to the horizontal. Then, as the lifting rod descends, it drives the transmission ring to move down. At this time, the angle between the evaporator plate and the horizontal plane becomes larger, and the alumina powder scattered on the surface of the evaporator plate falls to the next evaporator plate for drying. S5: As the lifting rod rises, the evaporator plate gradually becomes more horizontal from its tilted state. The slider drives the winding rope to slide away from the winding wheel. At this time, the winding rope wound on the winding wheel is unwound, and the winding wheel drives the torsion spring to tighten. As the lifting rod descends, the evaporator plate gradually tilts from its horizontal state. The alumina powder remaining on the surface of the evaporator plate falls under the action of gravity and lands on the surface of the first drying roller and the second drying roller. At the same time, the lifting rod drives the transmission ring to descend. At this time, the slider moves closer to the winding wheel. At this time, the winding rope is wound up under the action of the torsion spring. At the same time, the torsion spring drives the first rotating shaft and the first drying roller to rotate towards the second drying roller. When the first drying roller rotates, it drives the first synchronous gear to rotate. When the first synchronous gear rotates, it drives the second synchronous gear to rotate in the opposite direction to the first synchronous gear. This causes the alumina powder that has fallen between the first drying roller and the second drying roller to fall through the gap, further reducing the residence time of the alumina powder in the drying chamber. S6: After three drying cycles, the alumina powder falls to the bottom of the drying chamber and accumulates. The drive rod is activated, which drives the crushing support rod to stir the alumina powder accumulated at the bottom of the drying chamber to prevent clumping. At the same time, the alumina powder accumulated at the bottom of the drying chamber is lifted to the slope of the perforated dispersion plate by the spiral blades for circulating drying. Meanwhile, the driven rod drives the brush to clean the alumina powder accumulated on the slope of the perforated dispersion plate. The moisture generated during the drying process of the alumina powder is absorbed by the moisture absorption box.

[0015] Compared with the prior art, the present invention provides an automated drying line for alumina powder, which has the following advantages: 1. This automated alumina powder drying line, through the setting of a reciprocating oscillating evaporation plate, ensures the contact area between the raw material and the evaporation plate, while reducing the falling speed of the raw material during the falling process and increasing the residence time, thereby ensuring the drying effect. It solves the problem in the existing technology that although multi-stage drying can be achieved, the contact between alumina powder and the drying components is insufficient, which affects the drying efficiency. 2. This automated alumina powder drying line achieves the cyclic drying of accumulated raw materials through the combination of spiral blades and hollow dispersion plates, which solves the problem in the existing technology that the accumulation of incompletely dried raw materials can easily lead to the accumulation of raw materials, affecting the drying efficiency and making it difficult to ensure stable drying quality. 3. This automated alumina powder drying line, through the setting of a retention drying component, further increases the contact area for drying raw materials, slows down the falling speed of raw materials, and further ensures the drying effect; 4. This automated alumina powder drying line uses driven rods and brushes to clean the alumina powder accumulated on the slope of the perforated dispersion plate, preventing accumulation and blockage, and ensuring stable material feeding from the perforated dispersion plate. Attached Figure Description

[0016] Figure 1 This is one of the structural schematic diagrams of the present invention; Figure 2 This is the second structural schematic diagram of the present invention; Figure 3 This is the front view of the present invention; Figure 4 This is one of the schematic diagrams of the internal structure of the drying chamber of the present invention; Figure 5 This is a second schematic diagram of the internal structure of the drying chamber of the present invention; Figure 6 This is a front view of the internal structure of the drying chamber of the present invention; Figure 7 This is one of the structural schematic diagrams of the intermittent feeding assembly of the present invention; Figure 8 This is a second schematic diagram of the intermittent feeding assembly of the present invention; Figure 9 This is one of the structural schematic diagrams of the evaporator plate of the present invention; Figure 10 This is a second schematic diagram of the evaporation plate of the present invention; Figure 11 This is one of the exploded structural diagrams of the reciprocating lifting mechanism of the present invention; Figure 12 This is the second exploded structural diagram of the reciprocating lifting mechanism of the present invention; Figure 13 This is a schematic diagram of the structure of the retention drying component of the present invention.

[0017] In the diagram: 10. Drying chamber; 110. Drive shaft; 120. Hollowed-out dispersion plate; 130. Spiral blade; 140. Lifting pipe; 150. Transmission ring; 160. Connecting rod; 170. Moisture absorption chamber; 20. Intermittent feeding mechanism; 210. Transmission gear; 220. Driven gear; 230. Gear ring; 240. Discharge hole; 250. Discharge pipe; 260. Storage hopper; 270. Driven rod; 280. Brush strip; 30. Evaporation plate; 310. Air inlet pipe; 320. Air outlet pipe; 330. Slide chute; 340. Sliding block; 40. Crushing assembly; 410. Drive rod; 420. Crushing support rod; 50. Retention drying assembly; 510. Mounting frame; 520. First rotating shaft; 530. Second rotating shaft; 540. First drying roller; 550. Second drying roller; 560. Transmission assembly; 561. First synchronous gear; 562. Second synchronous gear; 563. Winding reel; 564. Winding rope; 565. Torsion spring; 566. Protective shell; 60. Reciprocating lifting assembly; 610. Mounting cylinder; 620. Cylindrical cam; 630. Locking groove; 640. Driven roller; 650. U-shaped frame; 660. L-shaped rod; 670. Lifting rod. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0019] It will be understood by those skilled in the art that, unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. It should also be understood that terms such as those defined in general dictionaries should be understood to have the same meaning as in the context of the prior art, and should not be interpreted in an idealized or overly formal sense unless defined as herein. Example 1:

[0020] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 , Figure 12 and Figure 13An automated alumina powder drying line includes a drying chamber 10 and an electric heating tube embedded in the inner wall of the drying chamber 10, and further includes: Drive shaft 110 is mounted on the top of drying chamber 10 and its output end extends downward through drying chamber 10. Intermittent feeding mechanism 20 is installed between the top of the drying chamber 10 and the upper outer wall of the drive shaft 110, and is used to feed alumina powder raw material. A perforated dispersion plate 120 is fixedly installed on the inner side wall of the drying chamber 10 near the top, and the perforated dispersion plate 120 avoids the drive shaft 110. Spiral blade 130, the spiral blade is fixedly installed on the shaft wall of the drive shaft 110 placed inside the drying chamber 10; The lifting tube 140 is fixedly installed in the middle of the hollowed-out dispersion plate 120, and the lifting tube 140 covers the outside of the spiral blade 130. Evaporation plate 30 is rotatably connected to the inner wall of drying chamber 10, and adjacent evaporation plates 30 are staggered. in, The evaporation plate 30 is provided with an air inlet and an air outlet, and the air inlet and air outlet are respectively connected to an air inlet pipe 310 and an air outlet pipe 320 extending outward through the drying chamber 10. The air inlet pipe 310 and the air outlet pipe 320 located on the same side of the drying chamber 10 between adjacent evaporation plates 30 are interconnected. Solenoid valves are provided on the air inlet pipe 310 and the air outlet pipe 320. Alumina powder falls onto the slope of the hollow dispersion plate 120 through the material drop hole 240, and then slowly slides down under the action of gravity. During the falling process, the drying chamber 10, which has been preheated, performs preliminary drying on it. The alumina powder falls onto the surface of the evaporation plate 30 through the holes of the hollow dispersion plate 120. The evaporation plate 30, which has been preheated, performs secondary drying on the alumina powder that has fallen onto the surface of the evaporation plate 30. At the same time, it can increase the residence time of the falling alumina powder and improve the drying effect. Crushing assembly 40 is installed in the lower chamber of drying chamber 10; The transmission ring 150 is slidably connected to the outer wall of the riser tube 140, and a connecting rod 160 is connected between adjacent transmission rings 150. The transmission ring 150 is slidably engaged with the evaporator plate 30. The retention drying component 50 is installed at the swing end of the evaporation plate 30 to slow down the falling speed of the alumina powder on the evaporation plate 30. A reciprocating lifting assembly 60 is installed at one end of the drive shaft 110 that passes through the drying chamber 10, and the lifting end of the reciprocating lifting assembly 60 passes through the drying chamber 10 and is fixedly connected to the transmission ring 150.

[0021] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 7 and Figure 8 The intermittent feeding mechanism 20 includes a transmission gear 210 sleeved on the upper section of the drive shaft 110, a driven gear 220 rotatably connected to the inner wall of the top of the drying chamber 10 and meshing with the transmission gear 210, a gear ring 230 rotatably connected to the inner wall of the top of the drying chamber 10 and meshing with the driven gear 220, a discharge hole 240 evenly opened on the gear ring 230, a discharge pipe 250 fixedly installed on the top of the drying chamber 10 and corresponding to the discharge hole 240, and a discharge pipe 250 fixedly installed on the discharge pipe 250 away from the discharge hole 240. The storage hopper 260 at one end of the drying chamber 10 is turned on. The motor on the drive shaft 110 is turned on. The drive shaft 110 rotates and drives the transmission gear 210 to rotate. When the transmission gear 210 rotates, it drives the driven gear 220 to rotate. When the driven gear 220 rotates, it drives the gear ring 230 to rotate. During the rotation of the gear ring 230, the discharge hole 240 on the gear ring 230 is intermittently aligned with the discharge port of the discharge pipe 250, so that the alumina powder in the storage hopper 260 intermittently enters the drying chamber 10.

[0022] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 7 and Figure 8 A driven rod 270 is fixedly connected to the bottom of the driven gear 220. A uniformly distributed brush strip 280 is fixedly connected to the outer wall of the driven rod 270, and the brush strip 280 abuts against the hollow dispersion plate 120. The contact surface between the hollow dispersion plate 120 and the alumina powder is a slope. The alumina powder accumulated at the bottom of the drying chamber 10 is lifted to the slope of the hollow dispersion plate 120 for circulation drying under the action of the spiral blade 130, ensuring the drying effect. At the same time, the driven rod 270 drives the brush strip 280 to clean the alumina powder accumulated on the slope of the hollow dispersion plate 120, avoiding accumulation and blockage, and ensuring stable material feeding from the hollow dispersion plate 120. The water vapor generated during the drying process of the alumina powder in the drying chamber 10 is absorbed by the moisture absorption box 170.

[0023] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6The crushing component 40 includes a drive rod 410 rotatably mounted on the inner wall of the drying chamber 10 and a crushing support rod 420 uniformly mounted on the wall of the drive rod 410. The dried alumina powder falls to the bottom of the drying chamber 10 and forms an accumulation. To prevent agglomeration during the drying process, the drive rod 410 is turned on, which drives the crushing support rod 420 to stir the alumina powder accumulated at the bottom of the drying chamber 10 to prevent agglomeration.

[0024] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 9 and Figure 10 The evaporator plate 30 adopts a U-shaped structure. The inner side wall of the vertical section of the evaporator plate 30 is provided with a groove 330. A slider 340 is slidably connected in the groove 330. The end of the slider 340 away from the groove 330 is rotatably connected to the transmission ring 150.

[0025] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 11 and Figure 12 The reciprocating lifting assembly 60 includes a mounting cylinder 610 fixedly installed at the bottom of the drying chamber 10 and covering the outer side of the lower section of the drive shaft 110; a cylindrical cam 620 fixedly installed at the end of the drive shaft 110 located in the inner cavity of the mounting cylinder 610; a locking groove 630 formed on the cylindrical cam 620; a driven roller 640 locked in the locking groove 630; a U-shaped frame 650 slidably connected to the inner wall of the mounting cylinder 610 and rotatably connected to the driven roller 640; an L-shaped rod 660 fixedly installed on the horizontal section of the U-shaped frame 650 and extending outward through the mounting cylinder 610; and a lifting rod 670 fixedly connected between the transmission ring 150 and the L-shaped rod 660. When the drive shaft 110 rotates, it drives the cylindrical cam 620 to rotate, thereby driving the driven roller 640 along... The locking groove 630 moves, thereby realizing the reciprocating movement of the U-shaped frame 650, which in turn drives the lifting rod 670 connected to the L-shaped rod 660 to reciprocate. During the reciprocating movement of the lifting rod 670, the transmission ring 150 is driven to reciprocate along the lifting tube 140, which in turn drives the evaporator plate 30 to swing back and forth. When the lifting rod 670 rises to the highest point, the transmission ring 150 drives the slider 340 to slide along the slide groove 330, raising the evaporator plate 30 to the horizontal. Then, as the lifting rod 670 descends, it drives the transmission ring 150 to move down. At this time, the angle between the evaporator plate 30 and the horizontal plane becomes larger, and the alumina powder scattered on the surface of the evaporator plate 30 falls to the next evaporator plate 30 for drying, ensuring the heat exchange area of ​​the alumina powder and greatly improving the drying efficiency of the alumina powder.

[0026] Reference Figure 1 , Figure 2 and Figure 3 The drying chamber 10 has an exhaust port on its outer side wall near the top, and a moisture absorption box 170 is installed at the exhaust port.

[0027] First, the electric heating element, the first drying roller 540, and the second drying roller 550 are started. At the same time, the solenoid valve on the air inlet pipe 310 is opened to introduce steam into the evaporation plate 30 to preheat the inner cavity of the drying chamber 10. Meanwhile, the alumina powder to be dried is fed into the storage hopper 260. After the above preparations are completed, the motor on the drive shaft 110 is turned on. The drive shaft 110 rotates and drives the transmission gear 210 to rotate. When the transmission gear 210 rotates, it drives the driven gear 220 to rotate. When the driven gear 220 rotates, it drives the gear ring 230 to rotate. During the rotation of the gear ring 230, the discharge hole 240 on the gear ring 230 is intermittently aligned with the discharge port of the discharge pipe 250, so that the alumina powder in the storage hopper 260 intermittently enters the drying chamber 10. Alumina powder falls onto the slope of the perforated dispersion plate 120 through the discharge hole 240, and then slowly slides down under the action of gravity. During the falling process, the preheated drying chamber 10 performs preliminary drying on it. The alumina powder falls onto the surface of the evaporation plate 30 through the holes of the perforated dispersion plate 120. The preheated evaporation plate 30 performs secondary drying on the alumina powder that falls on the surface of the evaporation plate 30. At the same time, it can increase the residence time of the falling alumina powder and improve the drying effect. While the drive shaft 110 rotates, it drives the cylindrical cam 620 to rotate, which in turn drives the driven roller 640 to move along the locking groove 630, thereby realizing the reciprocating movement of the U-shaped frame 650. This, in turn, drives the lifting rod 670 connected to the L-shaped rod 660 to reciprocate up and down. During the reciprocating up and down movement of the lifting rod 670, it drives the transmission ring 150 to reciprocate up and down along the lifting tube 140, which in turn drives the evaporator plate 30 to reciprocate and swing. When the lifting rod 670 rises to its highest point, the transmission ring 150 drives the slider 340 to slide along the slide groove 330, raising the evaporator plate 30 to the horizontal. Then, as the lifting rod 670 descends, it drives the transmission ring 150 to move downward. At this time, the angle between the evaporator plate 30 and the horizontal plane increases, and the alumina powder scattered on the surface of the evaporator plate 30 falls onto the next evaporator plate 30 for drying, thus maintaining its position. The heat exchange area of ​​the alumina powder is increased, which greatly improves the drying efficiency of the alumina powder. After drying, the alumina powder falls to the bottom of the drying chamber 10 and accumulates. To avoid clumping during the drying process, the drive rod 410 is activated, which drives the crushing support rod 420 to stir the alumina powder accumulated at the bottom of the drying chamber 10 to prevent clumping. At the same time, the alumina powder accumulated at the bottom of the drying chamber 10 is lifted to the slope of the hollow dispersion plate 120 by the spiral blades 130 for circulation drying to ensure the drying effect. Meanwhile, the driven rod 270 drives the brush strip 280 to clean the alumina powder accumulated on the slope of the hollow dispersion plate 120 to prevent accumulation and blockage, and to ensure stable material feeding from the hollow dispersion plate 120. The water vapor generated during the drying process of the alumina powder in the drying chamber 10 is adsorbed by the moisture absorption box 170. Example 2:

[0028] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 9 , Figure 10 and Figure 13 An automated alumina powder drying line is basically the same as in Example 1, but further includes a retention drying assembly 50 comprising a mounting frame 510 mounted on the swing end of the evaporation plate 30, a first rotating shaft 520 and a second rotating shaft 530 rotatably mounted on the mounting frame 510, a first drying roller 540 and a second drying roller 550 sleeved on the outer walls of the first rotating shaft 520 and the second rotating shaft 530, and a transmission assembly 560 mounted between the end of the first rotating shaft 520 and the second rotating shaft 530 away from the mounting frame 510 and the slider 340.

[0029] The transmission assembly 560 includes a first synchronous gear 561 and a second synchronous gear 562 fixedly installed at the ends of the first rotating shaft 520 and the second rotating shaft 530 away from the mounting frame 510 and meshing with each other, a take-up wheel 563 installed at the end of the first synchronous gear 561 away from the first rotating shaft 520, a take-up rope 564 installed between the take-up wheel 563 and the slider 340, and a torsion spring 565 fixedly connected between the mounting frame 510 and the first drying roller 540 and sleeved on the outer wall of the first rotating shaft 520. The first synchronous gear 561 and the second synchronous gear 562 are covered with a protective shell 566. As the lifting rod 670 rises, the evaporator plate 30 gradually approaches horizontal from its inclined state. The slider 340 drives the winding rope 564 to slide away from the winding wheel 563. At this time, the winding rope 564 wound on the winding wheel 563 is unwound, and the winding wheel 563 drives the torsion spring 565 to tighten. As the lifting rod 670 descends, the evaporator plate 30 gradually tilts from its horizontal state. The alumina powder retained on the surface of the evaporator plate 30 falls under the action of gravity and lands on the surface of the first drying roller 540 and the second drying roller 550. At the same time, the lifting rod 670 drives the transmission ring 150 to descend. At this time, the slider 340 moves towards the winding wheel 563. The winding rope 564 is wound up under the rebound force of the torsion spring 565. At the same time, the rebound force of the torsion spring 565 drives the first rotating shaft 520 and the first drying roller 540 to rotate in the direction of the second drying roller 550. When the first drying roller 540 rotates, it drives the first synchronous gear 561 to rotate. When the first synchronous gear 561 rotates, it drives the second synchronous gear 562 to rotate in the opposite direction to the first synchronous gear 561. This causes the alumina powder that falls between the first drying roller 561 and the second drying roller 562 to fall through the gap, further reducing the residence time of the alumina powder in the inner cavity of the drying chamber 10. At the same time, three drying processes are achieved, further ensuring the drying efficiency.

[0030] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An automated drying line for alumina powder, comprising a drying chamber (10) and heating elements embedded in the inner wall of the drying chamber (10), characterized in that, Also includes: A drive shaft (110) is mounted on the top of the drying chamber (10) and its output end extends downward through the drying chamber (10); An intermittent feeding mechanism (20) is installed between the top of the drying chamber (10) and the upper outer wall of the drive shaft (110) for feeding alumina powder raw materials. The intermittent feeding mechanism (20) includes a transmission gear (210) sleeved on the upper shaft wall of the drive shaft (110), a driven gear (220) rotatably connected to the inner wall of the top of the drying chamber (10) and meshing with the transmission gear (210), and a gear ring (230) rotatably connected to the inner wall of the top of the drying chamber (10) and meshing with the driven gear (220). The gear (220) has a uniformly spaced discharge hole (240) on the gear ring (230), a discharge pipe (250) fixedly installed on the top of the drying chamber (10) and corresponding to the discharge hole (240), and a storage hopper (260) fixedly installed at the end of the discharge pipe (250) away from the drying chamber (10); the driven gear (220) is fixedly connected to the bottom of a driven rod (270), and the outer side wall of the driven rod (270) is fixedly connected to a uniformly distributed brush strip (280), and the brush strip (280) abuts against the hollow dispersion plate (120); A perforated dispersion plate (120) is fixedly installed on the inner side wall of the drying chamber (10) near the top, and the perforated dispersion plate (120) avoids the drive shaft (110). The contact surface between the perforated dispersion plate (120) and the alumina powder is a slope. Spiral blades (130) are fixedly mounted on the shaft wall inside the drying chamber (10) of the drive shaft (110); A lifting tube (140) is fixedly installed in the middle of the hollowed-out dispersion plate (120), and the lifting tube (140) covers the outside of the spiral blade (130); An evaporating plate (30) is rotatably connected to the inner wall of the drying chamber (10), and adjacent evaporating plates (30) are staggered; the evaporating plate (30) adopts a U-shaped structure, and a sliding groove (330) is provided on the inner wall of the vertical section of the evaporating plate (30). A slider (340) is slidably connected in the sliding groove (330), and the end of the slider (340) away from the sliding groove (330) is rotatably connected to the transmission ring (150); The evaporation plate (30) is provided with an air inlet and an air outlet, and the air inlet and the air outlet are respectively connected to an air inlet pipe (310) and an air outlet pipe (320) extending outward through the drying chamber (10). The air inlet pipe (310) and the air outlet pipe (320) located between adjacent evaporation plates (30) on the same side of the drying chamber (10) are interconnected. The air inlet pipe (310) and the air outlet pipe (320) are provided with solenoid valves. The crushing assembly (40) is installed in the lower chamber of the drying chamber (10); the crushing assembly (40) includes a drive rod (410) rotatably installed on the inner side wall of the drying chamber (10) and crushing support rods (420) uniformly installed on the rod wall of the drive rod (410). A transmission ring (150) is slidably connected to the outer wall of the lifting tube (140), and a connecting rod (160) is connected between adjacent transmission rings (150). The transmission ring (150) is slidably engaged with the evaporator plate (30). A retention drying component (50) is installed at the swing end of the evaporation plate (30) to slow down the falling speed of alumina powder on the evaporation plate (30); A reciprocating lifting assembly (60) is installed at one end of the drive shaft (110) that passes through the drying chamber (10), and the lifting end of the reciprocating lifting assembly (60) passes through the drying chamber (10) and is fixedly connected to the transmission ring (150); the reciprocating lifting assembly (60) includes a mounting cylinder (610) fixedly installed at the bottom of the drying chamber (10) and covering the outer side of the lower section of the drive shaft (110), and a drive shaft (110) end fixedly installed in the inner cavity of the mounting cylinder (610). The cylindrical cam (620), the locking groove (630) opened on the cylindrical cam (620), the driven roller (640) locked in the locking groove (630), the U-shaped frame (650) slidably connected to the inner side wall of the mounting cylinder (610) and rotatably connected to the driven roller (640), the L-shaped rod (660) fixedly installed on the horizontal section of the U-shaped frame (650) and extending outward through the mounting cylinder (610), and the lifting rod (670) fixedly connected between the transmission ring (150) and the L-shaped rod (660). The retention drying assembly (50) includes a mounting bracket (510) mounted on the swing end of the evaporation plate (30), a first rotating shaft (520) and a second rotating shaft (530) rotatably mounted on the mounting bracket (510), a first drying roller (540) and a second drying roller (550) sleeved on the outer walls of the first rotating shaft (520) and the second rotating shaft (530), and a transmission assembly (560) mounted between the end of the first rotating shaft (520) and the second rotating shaft (530) away from the mounting bracket (510) and the slider (340). The transmission assembly (560) includes a first synchronous gear (561) and a second synchronous gear (562) fixedly installed on the first rotating shaft (520) and the second rotating shaft (530) away from the mounting frame (510) and meshing with each other, a take-up wheel (563) installed on the first synchronous gear (561) away from the first rotating shaft (520), a take-up rope (564) installed between the take-up wheel (563) and the slider (340), and a torsion spring (565) fixedly connected between the mounting frame (510) and the first drying roller (540) and sleeved on the outer wall of the first rotating shaft (520). The first synchronous gear (561) and the second synchronous gear (562) are covered with a protective shell (566).

2. The automated alumina powder drying line according to claim 1, characterized in that, The drying chamber (10) has an exhaust port on its outer side wall near the top, and a moisture-absorbing box (170) is installed at the exhaust port.

3. The method of using the automated alumina powder drying line as described in claim 2, characterized in that, Includes the following steps: S1: First, control the start of the electric heating tube and the first drying roller (540) and the second drying roller (550), and at the same time open the solenoid valve on the air inlet pipe (310) to pass steam into the evaporation plate (30) to preheat the inner cavity of the drying box (10), and at the same time send the alumina powder to be dried into the storage hopper (260). S2: After the above preparations are completed, turn on the motor on the drive shaft (110). The drive shaft (110) rotates and drives the transmission gear (210) to rotate. When the transmission gear (210) rotates, it drives the driven gear (220) to rotate. When the driven gear (220) rotates, it drives the gear ring (230) to rotate. During the rotation of the gear ring (230), the dropping hole (240) on the gear ring (230) is intermittently aligned with the dropping port of the dropping pipe (250), and then the alumina powder in the storage hopper (260) intermittently enters the drying chamber (10). S3: Alumina powder falls onto the slope of the hollow dispersion plate (120) through the feeding hole (240), and then slowly slides down under the action of gravity. During the falling process, the drying box (10) after preheating is used to pre-dry it. Alumina powder falls onto the surface of the evaporation plate (30) through the holes of the hollow dispersion plate (120). The evaporation plate (30) after preheating is used to perform secondary drying on the alumina powder falling on the surface of the evaporation plate (30), which can also increase the residence time of the falling alumina powder. S4: While the drive shaft (110) rotates, it drives the cylindrical cam (620) to rotate, which in turn drives the driven roller (640) to move along the locking groove (630), thereby realizing the reciprocating movement of the U-shaped frame (650), which in turn drives the lifting rod (670) connected to the L-shaped rod (660) to reciprocate. During the reciprocating movement of the lifting rod (670), it drives the transmission ring (150) to reciprocate along the lifting tube (140), which in turn drives the evaporating plate (30) to swing back and forth. When the lifting rod (670) rises to the highest point, the transmission ring (150) drives the slider (340) to slide along the slide groove (330), raising the evaporating plate (30) to the horizontal. Then, as the lifting rod (670) descends, it drives the transmission ring (150) to move down. At this time, the angle between the evaporating plate (30) and the horizontal plane becomes larger, and the alumina powder scattered on the surface of the evaporating plate (30) falls to the next evaporating plate (30) for drying. S5: As the lifting rod (670) rises, the evaporator plate (30) gradually becomes more horizontal from its inclined state. The slider (340) drives the winding rope (564) to slide away from the winding wheel (563). At this time, the winding rope (564) wound on the winding wheel (563) is unwound, and the winding wheel (563) drives the torsion spring (565) to tighten. As the lifting rod (670) descends, the evaporator plate (30) gradually tilts from its horizontal state. The alumina powder retained on the surface of the evaporator plate (30) falls under the action of gravity and lands on the surface of the first drying roller (540) and the second drying roller (550). At the same time, the lifting rod (670) drives the transmission ring (150) to descend. At this time, the slider (340) moves closer to the winding wheel. As the wheel (563) moves in the direction of the rotation, the winding rope (564) is wound up under the action of the rebound force of the torsion spring (565). At the same time, the rebound force of the torsion spring (565) drives the first rotating shaft (520) and the first drying roller (540) to rotate in the direction of the second drying roller (550). When the first drying roller (540) rotates, it drives the first synchronous gear (561) to rotate. When the first synchronous gear (561) rotates, it drives the second synchronous gear (562) to rotate in the opposite direction to the first synchronous gear (561). This causes the alumina powder that falls between the first drying roller (540) and the second drying roller (550) to fall through the gap, further reducing the residence time of the alumina powder in the inner cavity of the drying chamber (10). S6: After three drying cycles, the alumina powder falls to the bottom of the drying chamber (10) and accumulates. The drive rod (410) is turned on, and the crushing support rod (420) is driven to stir the alumina powder accumulated at the bottom of the drying chamber (10) to prevent clumping. At the same time, the alumina powder accumulated at the bottom of the drying chamber (10) is lifted to the slope of the hollow dispersion plate (120) by the spiral blade (130) for circulating drying. Meanwhile, the driven rod (270) drives the brush strip (280) to clean the alumina powder accumulated on the slope of the hollow dispersion plate (120). The water vapor generated during the drying process of the alumina powder in the drying chamber (10) is adsorbed by the moisture absorption box (170).

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