Automatic alumina powder drying line and using method thereof

Abstract

The invention discloses an automatic alumina powder drying line and a using method thereof, and belongs to the technical field of drying equipment. An automatic drying line for alumina powder comprises a drying box body and an electric heating tube embedded in the inner side wall of the drying box body, and further comprises a driving shaft installed at the top of the drying box body, and the output end of the driving shaft penetrates through the drying box body and extends downwards; the intermittent feeding mechanism is mounted 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 an alumina powder raw material; the hollowed-out dispersion plate is fixedly mounted on the inner side wall, close to the top, of the drying box body, and the hollowed-out dispersion plate avoids the driving shaft; the spiral blade is fixedly mounted on the shaft wall, arranged in the drying box body, of the driving shaft; the drying mechanism makes full contact with raw materials to be dried, accumulated raw materials can be circularly dried, and the stable drying effect of aluminum oxide powder is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of drying equipment, and in particular to an automatic drying line for aluminum oxide powder and a use method thereof. Background Art

[0002] Alumina powder is a white ultrafine powder, an inorganic oxide. It has the characteristics of high purity, high whiteness, high true specific gravity, good thermal stability, uniform particle size distribution and good fluidity. The production process of alumina powder is getting higher and higher, and alumina powder below 1 micron can be produced. It is added to various acrylic resins, polyurethane resins, epoxy resins, melamine resins, silicone acrylic emulsions and other resins to improve the hardness of the resin. The nano alumina liquid can be any aqueous or oily solvent.

[0003] In the prior art, the invention patent with application number CN202210008130.4 discloses: "A drying device for aluminum hydroxide powder, relating to the technical field of aluminum hydroxide powder drying, comprising a device body, a feeding mechanism is installed at the top of the device body, and a primary drying component and a secondary drying component are installed inside the device body, and circulating ventilation components are installed on both sides of the device body, and the primary drying component includes a bracket fixedly installed on the inner wall of the device body near the top, and the inner side of the bracket is rotatably connected to a baking tray through a bearing; the present invention utilizes the set air outlet ring pipe in conjunction with the set baking tray to perform preliminary drying treatment on the aluminum hydroxide powder; by utilizing the set baking vortex cylinder, hot air can carry the material into the baking vortex cylinder, and the multiple spiral wall grooves provided in conjunction with the set can enable the material to fully contact the inner wall of the baking vortex cylinder, and cooperate with the heating effect of the heating arc wire to achieve further drying treatment of the material", but the following defects still exist: Although multi-stage drying can be achieved, the contact between the alumina powder and the drying components is not sufficient, which can easily cause the accumulation of incompletely dried raw materials and affect the drying efficiency; The cyclic drying of alumina powder cannot be achieved, which is not conducive to ensuring stable drying quality. Summary of the invention

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

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: An automatic drying line for aluminum oxide powder comprises a drying box and an electric heating tube embedded in the inner wall of the drying box, and also comprises: A drive shaft, wherein the drive shaft is mounted on the top of the drying box and an output end thereof passes through the drying box and extends downward; An intermittent feeding mechanism, which is installed between the top of the drying box and the upper outer wall of the driving shaft and is used to feed alumina powder raw materials; A hollow dispersion plate, which is fixedly mounted on the inner wall of the drying box body near the top, and the hollow dispersion plate avoids the driving shaft; A spiral blade, wherein the spiral blade is fixedly mounted on a shaft wall of a driving shaft disposed in a drying box; A lifting pipe, the lifting pipe is fixedly installed in the middle of the hollow dispersion plate, and the lifting pipe is covered on the outside of the spiral blade; Evaporation plates, the evaporation plates are rotatably connected to the inner wall of the drying box, and adjacent evaporation plates are staggered; in, An air inlet and an air outlet are provided on the evaporation plate, and the air inlet and the air outlet are respectively connected with an air inlet pipe and an air outlet pipe extending outward through the drying box body, the air inlet pipe and the air outlet pipe between adjacent evaporation plates on the same side of the drying box body are connected to each other, and solenoid valves are provided on the air inlet pipe and the air outlet pipe; A crushing assembly, wherein the crushing assembly is installed in the lower chamber of the drying box; A transmission ring, wherein the transmission ring is slidably connected to the outer wall of the riser, and connecting rods are connected between adjacent transmission rings, and the transmission ring is slidably matched with the evaporation plate; A retention drying component, which is installed at the swing end of the evaporation plate and is used to slow down the falling speed of the alumina powder on the evaporation plate; A reciprocating lifting component is installed at one end of the driving shaft passing through the drying box body, and the lifting end of the reciprocating lifting component passes through the drying box body and is fixedly connected to the transmission ring.

[0006] Preferably, the intermittent feeding mechanism includes a transmission gear sleeved on the upper shaft wall of the driving shaft, a driven gear rotatably connected to the inner wall of the top of the drying box and meshing with the transmission gear, a gear ring rotatably connected to the inner wall of the top of the drying box and meshing with the driven gear, drop holes evenly arranged on the gear ring, a drop pipe fixedly installed on the top of the drying box and corresponding to the drop holes, and a storage hopper fixedly installed on the end of the drop pipe away from the drying box.

[0007] Preferably, a driven rod is fixedly connected to the bottom of the driven gear, and evenly distributed brush strips are fixedly connected to the outer wall of the driven rod, and the brush strips are in contact with a hollow dispersion plate, and the contact surface between the hollow dispersion plate and the aluminum oxide powder is a slope.

[0008] Preferably, the crushing assembly includes a driving rod rotatably mounted on the inner wall of the drying box and crushing support rods evenly mounted on the wall of the driving rod.

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

[0010] Preferably, the reciprocating lifting assembly includes a mounting cylinder fixedly mounted on the bottom of the drying box and covering the outer side of the lower section of the driving shaft, a cylindrical cam fixedly mounted on the end of the driving shaft disposed in the inner cavity of the mounting cylinder, a locking groove provided 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 mounted 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 at the swinging end of the evaporation plate, a first rotating shaft and a second rotating shaft rotatably installed 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 mounted on the first rotating shaft and the second rotating shaft at one end away from the mounting frame and meshing with each other, a winding wheel installed on the first synchronous gear at one end away from the first rotating shaft, a winding rope installed between the winding 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, and the first synchronous gear and the second synchronous gear are covered with a protective shell on the outside.

[0013] Preferably, an outer side wall of the drying box body close to the top is provided with an exhaust port, and a moisture absorption box is installed at the exhaust port.

[0014] A method for using an automatic drying line for aluminum oxide powder comprises the following steps: S1: First, control the start of the electric heating tube and the first drying roller and the second drying roller, and at the same time open the solenoid valve on the air inlet pipe to pass steam into the evaporation plate to preheat the inner cavity of the drying box, and at the same time send the alumina powder to be dried into the storage hopper; S2: After the above preparations are completed, the motor on the driving shaft is turned on, and the driving shaft rotates to drive 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 blanking hole on the gear ring is intermittently aligned with the blanking port of the blanking pipe, and then the alumina powder in the storage hopper intermittently enters the drying box; S3: The alumina powder falls on the slope of the hollow dispersion plate through the drop holes, and then slowly slides down under the action of gravity. During the falling process, the preheated drying box performs preliminary drying on the alumina powder. The alumina powder falls on the surface of the evaporation plate through the leak holes of the hollow dispersion plate. The preheated evaporation plate performs secondary drying on the alumina powder falling on the surface of the evaporation plate, and at the same time, the falling retention time of the alumina powder can be increased; S4: When the driving shaft rotates, the cylindrical cam is driven to rotate, and then the driven roller is driven to move along the locking groove, so as to realize the reciprocating movement of the U-shaped frame, and then the lifting rod connected to the L-shaped rod is driven to lift and lower back and forth. During the reciprocating lifting and lowering process of the lifting rod, the transmission ring is driven to lift and lower back and forth along the lifting pipe, and then the evaporation plate is driven to swing back and forth. When the lifting rod is raised to the highest point, the transmission ring drives the slider to slide along the slide groove, and the evaporation plate is lifted to the horizontal level. Then, as the lifting rod descends, the transmission ring is driven to move downward. At this time, the inclination angle between the evaporation plate and the horizontal plane becomes larger, and the aluminum oxide powder scattered on the surface of the evaporation plate falls to the next evaporation plate for drying; S5: During the process of the lifting rod rising, the evaporation plate gradually tends to be horizontal from the inclined state, and the slider drives the winding rope to slide in the direction away from the winding wheel. At this time, the winding rope wrapped around the winding wheel is unwound, and the winding wheel drives the torsion spring to tighten. During the process of the lifting rod descending, the evaporation plate gradually tilts from the horizontal state, and the aluminum oxide powder retained on the surface of the evaporation plate falls under the action of gravity and falls on the surfaces of the first drying roller and the second drying roller. At the same time, the lifting rod drives the transmission ring to descend, and the slider moves in the direction close to the winding wheel. At this time, the winding rope is wound under the action of the rebound force of the torsion spring, and the rebound force of the torsion spring drives the first rotating shaft and the first drying roller to rotate in the direction of 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 of the first synchronous gear, and then the aluminum oxide powder that falls between the first drying roller and the second drying roller falls through the gap, further reducing the residence time of the aluminum oxide powder falling in the inner cavity of the drying box; S6: After three dryings, the alumina powder falls to the bottom of the drying box and forms an accumulation. The driving rod is turned on to drive the crushing support rod to stir the alumina powder accumulated at the bottom of the drying box to avoid agglomeration. At the same time, the alumina powder accumulated at the bottom of the drying box is lifted to the slope of the hollow dispersion plate by the action of the spiral blade for cyclic drying. At the same time, the driven rod drives the brush bar to clean the alumina powder accumulated on the slope of the hollow dispersion plate. The water vapor generated in the drying box during the drying of the alumina powder is absorbed by the moisture absorption box.

[0015] Compared with the prior art, the present invention provides an automatic drying line for aluminum oxide powder, which has the following beneficial effects: 1. The aluminum oxide powder automatic drying line ensures the contact area between the drying raw material and the evaporation plate by setting a reciprocating swinging evaporation plate, and at the same time reduces the falling speed of the raw material during the falling process, increases the retention time, and thus ensures the drying effect, solving the problem that although the prior art can achieve multi-stage drying, the contact between the aluminum oxide powder and the drying component is insufficient, affecting the drying efficiency; 2. The automatic drying line of alumina powder realizes the circulation drying of the piled raw materials through the cooperation of the spiral blades and the hollow dispersion plates, which solves the problem in the prior art that the raw materials that are not completely dried are easily piled up, which affects the drying efficiency and is not conducive to ensuring stable drying quality; 3. The alumina powder automatic drying line further increases the contact area of ​​raw material drying by setting up a retention drying component, slows down the falling speed of the raw material, and further ensures the drying effect; 4. The automatic drying line of alumina powder can clean the alumina powder accumulated on the slope of the hollow dispersion plate through the set driven rod and brush bar, avoid accumulation and blockage, and ensure the stable falling of the hollow dispersion plate. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0017] In the figure: 10, drying box; 110, driving shaft; 120, hollow dispersion plate; 130, spiral blade; 140, lifting pipe; 150, transmission ring; 160, connecting rod; 170, moisture absorption box; 20, intermittent feeding mechanism; 210, transmission gear; 220, driven gear; 230, gear ring; 240, drop hole; 250, drop pipe; 260, storage hopper; 270, driven rod; 280, brush strip; 30, evaporation plate; 310, air inlet pipe; 320, air outlet pipe; 330, chute; 340, slider; 40, crushing assembly; 410, driving 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 wheel; 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 DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work 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 (including technical and scientific terms) used herein have the same meaning as those generally understood by those skilled in the art in the art to which the present invention belongs. It should also be understood that terms such as those defined in common dictionaries should be understood to have meanings consistent with the meanings in the context of the prior art, and will not be interpreted with idealized or overly formal meanings unless defined as herein. Embodiment 1:

[0020] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 , Fig.11 , Fig.12 and Fig.13, an alumina powder automatic drying line, comprising a drying box 10 and an electric heating tube embedded in the inner wall of the drying box 10, and also comprising: A driving shaft 110, wherein the driving shaft 110 is mounted on the top of the drying box 10 and an output end thereof passes through the drying box 10 and extends downward; An intermittent feeding mechanism 20, which is installed between the top of the drying box 10 and the upper outer wall of the driving shaft 110, and is used to feed the alumina powder raw material; A hollow dispersion plate 120, which is fixedly mounted on the inner wall of the drying box 10 near the top, and the hollow dispersion plate 120 avoids the driving shaft 110; The spiral blade 130 is fixedly mounted on the shaft wall of the driving shaft 110 placed inside the drying box 10; A lifting pipe 140, which is fixedly installed in the middle of the hollow dispersion plate 120, and is covered on the outside of the spiral blade 130; The evaporation plates 30 are rotatably connected to the inner wall of the drying box 10, and adjacent evaporation plates 30 are staggered; in, An air inlet and an air outlet are provided on the evaporation plate 30, and the air inlet and the air outlet are respectively connected with an air inlet pipe 310 and an air outlet pipe 320 extending outward through the drying box 10. The air inlet pipe 310 and the air outlet pipe 320 between adjacent evaporation plates 30 on the same side of the drying box 10 are connected to each other, and electromagnetic valves are provided on the air inlet pipe 310 and the air outlet pipe 320. The alumina powder falls on the slope of the hollow dispersion plate 120 through the drop hole 240, and then slowly slides down under the action of gravity. During the falling process, the drying box 10 that has been preheated performs preliminary drying on the alumina powder, and the alumina powder falls to the surface of the evaporation plate 30 through the leakage hole of the hollow dispersion plate 120. The evaporation plate 30 that has been preheated performs secondary drying on the alumina powder that falls on the surface of the evaporation plate 30, and at the same time, it can increase the retention time of the falling alumina powder and improve the drying effect. A crushing assembly 40, which is installed in the lower chamber of the drying box 10; A transmission ring 150, the 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, and the transmission ring 150 is slidably matched with the evaporation plate 30; A retention drying component 50, which is installed at the swing end of the evaporation plate 30 and is used to slow down the falling speed of the alumina powder on the evaporation plate 30; The reciprocating lifting assembly 60 is installed at one end of the driving shaft 110 passing through the drying box body 10 , and the lifting end of the reciprocating lifting assembly 60 passes through the drying box body 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 shaft wall of the driving shaft 110, a driven gear 220 rotatably connected to the inner wall of the top of the drying box 10 and meshing with the transmission gear 210, a gear ring 230 rotatably connected to the inner wall of the top of the drying box 10 and meshing with the driven gear 220, drop holes 240 uniformly arranged on the gear ring 230, a drop pipe 250 fixedly installed on the top of the drying box 10 and corresponding to the drop hole 240, and a drop pipe 250 fixedly installed away from the drop pipe 250. The storage hopper 260 at one end of the drying box 10 turns on the motor on the drive shaft 110. The drive shaft 110 rotates to drive 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 drop hole 240 on the gear ring 230 is intermittently aligned with the drop port of the drop tube 250, and then the alumina powder in the storage hopper 260 intermittently enters the drying box 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, and a uniformly distributed brush strip 280 is fixedly connected to the outer wall of the driven rod 270, and the brush strip 280 is in contact with 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 box 10 is lifted to the slope of the hollow dispersion plate 120 by the spiral blades 130 for cyclic drying to ensure 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 to avoid accumulation and blockage, thereby ensuring the stable dropping of the hollow dispersion plate 120. The water vapor generated during the drying process of the alumina powder by the drying box 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 assembly 40 includes a driving rod 410 rotatably mounted on the inner wall of the drying box 10 and a crushing support rod 420 evenly mounted on the rod wall of the driving rod 410. The dried alumina powder falls to the bottom of the drying box 10 to form an accumulation. To avoid agglomeration during the drying process, the driving rod 410 is turned on to drive the crushing support rod 420 to stir the alumina powder accumulated at the bottom of the drying box 10 to avoid agglomeration.

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

[0025] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Fig.11 and Fig.12 The reciprocating lifting assembly 60 includes a mounting cylinder 610 fixedly mounted on the bottom of the drying box 10 and covering the outer side of the lower section of the driving shaft 110, a cylindrical cam 620 fixedly mounted on the end of the driving shaft 110 placed in the inner cavity of the mounting cylinder 610, a locking groove 630 provided 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 mounted 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 driving shaft 110 rotates, the cylindrical cam 620 is driven to rotate, thereby driving the driven roller 640 along the inner wall of the mounting cylinder 610. The locking groove 630 moves, thereby realizing the reciprocating movement of the U-shaped frame 650, and then driving the lifting rod 670 connected to the L-shaped rod 660 to lift and lower back and forth. During the reciprocating lifting of the lifting rod 670, the transmission ring 150 is driven to lift and lower back and forth along the lifting pipe 140, and then driving the evaporation 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, and lifts the evaporation plate 30 to the horizontal. Then, as the lifting rod 670 descends, the transmission ring 150 is driven to move downward. At this time, the inclination angle of the evaporation plate 30 with the horizontal plane becomes larger, and the aluminum oxide powder scattered on the surface of the evaporation plate 30 falls to the next evaporation plate 30 for drying, thereby ensuring the heat exchange area of ​​the aluminum oxide powder and greatly improving the drying efficiency of the aluminum oxide powder.

[0026] Reference Figure 1 , Figure 2 and Figure 3 An exhaust port is provided on the outer side wall of the drying box body 10 near the top, and a moisture absorption box 170 is installed at the exhaust port.

[0027] First, the electric heating tube and the first drying roller 540 and the second drying roller 550 are controlled to start, and at the same time, the solenoid valve on the air inlet pipe 310 is opened to pass steam into the evaporation plate 30 to preheat the inner cavity of the drying box 10, and at the same time, the aluminum oxide powder to be dried is sent into the storage hopper 260; after the above preparations are completed, the motor on the drive shaft 110 is turned on, and the drive shaft 110 rotates to drive 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 blanking hole 240 on the gear ring 230 is intermittently aligned with the blanking port of the blanking pipe 250, and then the aluminum oxide powder in the storage hopper 260 intermittently enters the drying box 10; The alumina powder falls on the slope of the hollow dispersion plate 120 through the drop holes 240, and then slowly slides down under the action of gravity. During the falling process, the drying box 10 that has been preheated performs preliminary drying on the alumina powder. The alumina powder falls on the surface of the evaporation plate 30 through the leak holes of the hollow dispersion plate 120. The evaporation plate 30 that has been preheated performs secondary drying on the alumina powder that falls on the surface of the evaporation plate 30, and at the same time, the retention time of the falling alumina powder can be increased, thereby improving the drying effect. When the driving shaft 110 rotates, the cylindrical cam 620 is driven to rotate, and then the driven roller 640 is driven to move along the locking groove 630, so as to realize the reciprocating movement of the U-shaped frame 650, and then the lifting rod 670 connected to the L-shaped rod 660 is driven to lift and lower back and forth. In the process of the lifting and lowering of the lifting rod 670, the transmission ring 150 is driven to lift and lower back and forth along the lifting pipe 140, and then the evaporation plate 30 is driven to swing back and forth. When the lifting rod 670 is raised to the highest point, the transmission ring 150 drives the slider 340 to slide along the slide groove 330, and the evaporation plate 30 is lifted to the horizontal. Then, as the lifting rod 670 descends, the transmission ring 150 is driven to move downward. At this time, the inclination angle of the evaporation plate 30 with the horizontal plane becomes larger, and the aluminum oxide powder scattered on the surface of the evaporation plate 30 falls to the next evaporation plate 30 for drying, so as to ensure the stability of the evaporation plate 30. The heat exchange area of ​​the alumina powder is ensured, and the drying efficiency of the alumina powder is greatly improved; the dried alumina powder falls to the bottom of the drying box 10 to form an accumulation. In order to avoid agglomeration during the drying process, the driving rod 410 is turned on to drive the crushing support rod 420 to stir the alumina powder accumulated at the bottom of the drying box 10 to avoid agglomeration. At the same time, the alumina powder accumulated at the bottom of the drying box 10 is lifted to the slope of the hollow dispersion plate 120 under the action of the spiral blade 130 for cyclic drying to ensure the drying effect. At the same time, the driven rod 270 drives the brush bar 280 to clean the alumina powder accumulated on the slope of the hollow dispersion plate 120 to avoid accumulation and blockage, thereby ensuring the stable dropping of the hollow dispersion plate 120. The water vapor generated during the drying process of the alumina powder by the drying box 10 is absorbed by the moisture absorption box 170. Embodiment 2:

[0028] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Fig. 9 , Fig.10 and Fig.13 , an automated drying line for aluminum oxide powder, which is basically the same as Example 1, and further, the retention drying component 50 includes a mounting frame 510 installed at the swing end of the evaporation plate 30, a first rotating shaft 520 and a second rotating shaft 530 rotatably installed 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 component 560 installed 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 mounted on the first rotating shaft 520 and the second rotating shaft 530 at one end away from the mounting frame 510 and meshing with each other, a winding wheel 563 mounted on the end of the first synchronous gear 561 away from the first rotating shaft 520, a winding rope 564 mounted between the winding 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 on the outside. During the rising process of the lifting rod 670, the evaporation plate 30 gradually tends to be horizontal from the inclined state, and the slider 340 drives the winding rope 564 to slide in the direction away from the winding wheel 563. At this time, the winding rope 564 wound on the winding wheel 563 is unwound, and at the same time, the winding wheel 563 drives the torsion spring 565 to tighten. During the falling process of the lifting rod 670, the evaporation plate 30 gradually tilts from the horizontal state, and the aluminum oxide powder retained on the surface of the evaporation plate 30 falls under the action of gravity and falls on the surfaces 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, and the slider 340 moves in the direction close to the winding wheel 563. The winding rope 564 is wound 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 of the first synchronous gear 561, thereby causing the aluminum oxide 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 aluminum oxide powder in the inner cavity of the drying box 10, and realizing three dryings at the same time, further ensuring the drying efficiency.

[0030] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An automatic drying line for aluminum oxide powder, comprising a drying box (10) and an electric heating tube embedded in the inner wall of the drying box (10), characterized in that: Also includes: A drive shaft (110), wherein the drive shaft (110) is mounted on the top of the drying box (10) and an output end thereof passes through the drying box (10) and extends downward; An intermittent feeding mechanism (20), the intermittent feeding mechanism (20) being installed between the top of the drying box (10) and the upper outer wall of the driving shaft (110) and being used for feeding alumina powder raw materials; a hollow dispersion plate (120), the hollow dispersion plate (120) being fixedly mounted on an inner side wall of the drying box (10) close to the top, and the hollow dispersion plate (120) avoiding the driving shaft (110); A spiral blade (130), the spiral blade being fixedly mounted on a shaft wall of a drive shaft (110) placed inside a drying box (10); A lifting pipe (140), wherein the lifting pipe (140) is fixedly mounted in the middle of the hollow dispersion plate (120), and the lifting pipe (140) covers the outside of the spiral blade (130); Evaporation plates (30), the evaporation plates (30) being rotatably connected to the inner wall of the drying box (10), and adjacent evaporation plates (30) being arranged in a staggered manner; in, An air inlet and an air outlet are provided on the evaporation plate (30), 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 box (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 box (10) are connected to each other, and electromagnetic valves are provided on the air inlet pipe (310) and the air outlet pipe (320); A crushing assembly (40), wherein the crushing assembly (40) is installed in a lower chamber of the drying box (10); A transmission ring (150), the transmission ring (150) being slidably connected to the outer wall of the lifting tube (140), and connecting rods (160) being connected between adjacent transmission rings (150), and the transmission ring (150) being slidably matched with the evaporation plate (30); A retention drying component (50), the retention drying component (50) being installed at the swing end of the evaporation plate (30) and used to slow down the falling speed of the alumina powder on the evaporation plate (30); A reciprocating lifting assembly (60) is mounted on one end of a driving shaft (110) passing through a drying box (10), and a lifting end of the reciprocating lifting assembly (60) passes through the drying box (10) and is fixedly connected to a transmission ring (150).

2. The automatic drying line for aluminum oxide powder according to claim 1, characterized in that: The intermittent feeding mechanism (20) comprises a transmission gear (210) sleeved on the upper shaft wall of the driving shaft (110), a driven gear (220) rotatably connected to the inner wall of the top of the drying box (10) and meshing with the transmission gear (210), a gear ring (230) rotatably connected to the inner wall of the top of the drying box (10) and meshing with the driven gear (220), drop holes (240) evenly arranged on the gear ring (230), a drop pipe (250) fixedly mounted on the top of the drying box (10) and corresponding to the drop holes (240), and a storage hopper (260) fixedly mounted on the end of the drop pipe (250) away from the drying box (10).

3. The automatic drying line for aluminum oxide powder according to claim 2 is characterized in that: The bottom of the driven gear (220) is fixedly connected to a driven rod (270), the outer side wall of the driven rod (270) is fixedly connected to evenly distributed brush strips (280), and the brush strips (280) are in contact with the hollow dispersion plate (120), and the contact surface between the hollow dispersion plate (120) and the alumina powder is a sloped surface.

4. The automatic drying line for aluminum oxide powder according to claim 1, characterized in that: The crushing assembly (40) comprises a driving rod (410) rotatably mounted on the inner wall of the drying box (10) and crushing support rods (420) evenly mounted on the rod wall of the driving rod (410).

5. The automatic drying line for aluminum oxide powder according to claim 1, characterized in that: The evaporation plate (30) adopts a U-shaped structure, and a slide groove (330) is provided on the inner side wall of the vertical section of the evaporation plate (30). A slider (340) is slidably connected in the slide groove (330), and one end of the slider (340) away from the slide groove (330) is rotatably connected to the transmission ring (150).

6. The automatic drying line for aluminum oxide powder according to claim 5, characterized in that: The reciprocating lifting assembly (60) comprises a mounting cylinder (610) fixedly mounted on the bottom of the drying box (10) and covering the outer side of the lower section of the driving shaft (110), a cylindrical cam (620) fixedly mounted on the end of the driving shaft (110) disposed in the inner cavity of the mounting cylinder (610), a locking groove (630) provided 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 side wall of the mounting cylinder (610) and rotatably connected to the driven roller (640), an L-shaped rod (660) fixedly mounted 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).

7. The automatic drying line for aluminum oxide powder according to claim 6, characterized in that: The retention drying component (50) comprises a mounting frame (510) mounted on the swinging 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 component (560) mounted between an end of the first rotating shaft (520) and the second rotating shaft (530) away from the mounting frame (510) and the slider (340).

8. The automatic drying line for aluminum oxide powder according to claim 7, characterized in that: The transmission assembly (560) comprises a first synchronous gear (561) and a second synchronous gear (562) fixedly mounted on one end of the first rotating shaft (520) and the second rotating shaft (530) away from the mounting frame (510) and meshing with each other, a winding wheel (563) mounted on one end of the first synchronous gear (561) away from the first rotating shaft (520), a winding rope (564) mounted between the winding 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) on the outside.

9. The automatic drying line for aluminum oxide powder according to claim 8, characterized in that: An outer wall of the drying box body (10) close to the top is provided with an exhaust port, and a moisture absorption box (170) is installed at the exhaust port.

10. The method for using the automatic drying line for aluminum oxide powder according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1: first, controlling the start-up of the electric heating tube and the first drying roller (540) and the second drying roller (550), and simultaneously opening the solenoid valve on the air inlet pipe (310) to allow steam to enter the evaporation plate (30), thereby preheating the inner cavity of the drying box (10), and simultaneously sending the aluminum oxide powder to be dried into the storage hopper (260); S2: After the above preparations are completed, the motor on the driving shaft (110) is turned on, and the driving shaft (110) rotates to drive 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 drop hole (240) on the gear ring (230) is intermittently aligned with the drop opening of the drop pipe (250), so that the aluminum oxide powder in the storage hopper (260) intermittently enters the drying box (10); S3: the alumina powder falls onto the slope of the hollow dispersion plate (120) through the drop holes (240), and then slowly slides down under the action of gravity. During the falling process, the alumina powder is initially dried by the drying box (10) after preheating. The alumina powder falls onto the surface of the evaporation plate (30) through the leak holes of the hollow dispersion plate (120). The evaporation plate (30) after preheating performs secondary drying on the alumina powder falling on the surface of the evaporation plate (30), and at the same time, the falling retention time of the alumina powder can be increased; S4: When the driving shaft (110) rotates, the cylindrical cam (620) is driven to rotate, thereby driving the driven roller (640) to move along the locking groove (630), thereby realizing the reciprocating movement of the U-shaped frame (650), thereby driving the lifting rod (670) connected to the L-shaped rod (660) to lift and lower back and forth. During the reciprocating lifting and lowering process of the lifting rod (670), the transmission ring (150) is driven to lift and lower back and forth along the lifting pipe (140), thereby driving the evaporation 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 evaporation plate (30) to a horizontal position. Then, as the lifting rod (670) descends, the transmission ring (150) is driven to move downward. At this time, the inclination angle between the evaporation plate (30) and the horizontal plane increases, and the aluminum oxide powder scattered on the surface of the evaporation plate (30) falls to the next evaporation plate (30) for drying. S5: During the process of the lifting rod (670) rising, the evaporation plate (30) gradually moves from an inclined state to a horizontal state, and the slider (340) drives the winding rope (564) to slide in a direction away from the winding wheel (563). At this time, the winding rope (564) wound on the winding wheel (563) is unwound, and at the same time, the winding wheel (563) drives the torsion spring (565) to tighten. During the process of the lifting rod (670) descending, the evaporation plate (30) gradually tilts from a horizontal state, and the aluminum oxide powder retained on the surface of the evaporation plate (30) falls under the action of gravity and falls onto the surfaces 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, and at this time, the slider (340) moves towards the winding wheel (563). The first drying roller (563) moves in the direction of the first wheel (563), at which time the winding rope (564) is wound up under the action of the resilience of the torsion spring (565), and at the same time the resilience 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), and when the first drying roller (540) rotates, it drives the first synchronous gear (561) to rotate, and 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), thereby causing the aluminum oxide powder that falls between the first drying roller (561) and the second drying roller (562) to fall through the gap, thereby further reducing the residence time of the aluminum oxide powder in the inner cavity of the drying box (10); S6: After three dryings, the aluminum oxide powder falls to the bottom of the drying box (10) and forms an accumulation. The driving rod (410) is turned on to drive the crushing support rod (420) to stir the aluminum oxide powder accumulated at the bottom of the drying box (10) to avoid agglomeration. At the same time, the aluminum oxide powder accumulated at the bottom of the drying box (10) is lifted to the slope of the hollow dispersion plate (120) by the action of the spiral blade (130) for circulation drying. At the same time, the driven rod (270) drives the brush bar (280) to clean the aluminum oxide powder accumulated on the slope of the hollow dispersion plate (120). The water vapor generated during the drying of the aluminum oxide powder by the drying box (10) is absorbed by the moisture absorption box (170).

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