Centrifugal drying treatment device for chemical production

Abstract

This utility model discloses a centrifugal drying device for chemical production, including a drying cylinder and a uniform drying mechanism. The drying cylinder has a rotatable centrifugal drum inside, and a top cover at the upper end of the drying cylinder. A central shaft is rotatably connected inside the top cover. The uniform drying mechanism includes a sleeve, a corrugated groove, limiting posts, extension rods, scrapers, and an adjustment mechanism. The sleeve is movably fitted onto the outer surface of the central shaft. The corrugated groove is formed at the upper end of the outer surface of the sleeve. The limiting posts are respectively set on the left and right sides of the middle of the top wall of the top cover. The outer surfaces of the limiting posts are slidably connected to the inner wall of the corrugated groove. Extension rods are provided on the outer surface of the sleeve. This centrifugal drying device for chemical production can be adjusted to adapt to centrifugal drums of different diameters, and can more evenly agitate the crystals, avoiding blockage of the inner wall of the centrifugal drum by the accumulation of crystals, thereby improving the outflow efficiency of the mother liquor and the drying efficiency of dibromobiphenyl.

Description

Technical Field

[0001] This utility model relates to the field of dibromobiphenyl production technology, specifically a centrifugal drying device for chemical production. Background Technology

[0002] Dibromobiphenyl is a type of bromobiphenyl organic compound, typically with the molecular formula C10. 12 H8Br2, formed by replacing two hydrogen atoms with bromine atoms in a biphenyl molecule, is mainly used as an intermediate in organic synthesis or a raw material for dye preparation. After initial crystallization, dibromobiphenyl requires centrifugal drying, necessitating a centrifugal drying device for chemical production. Existing such devices typically consist of a high-speed rotating centrifuge drum and a drying cylinder. The centrifuge drum, located inside the drying cylinder, rotates at high speed. During operation, the dibromobiphenyl crystals containing the mother liquor are fed into the centrifuge drum. The high-speed rotation generates centrifugal force, throwing out most of the mother liquor. Simultaneously, hot air is introduced downwards from the top of the drying cylinder, continuously blowing on the surface of the crystals, causing the mother liquor adhering to the crystal surface to evaporate. The evaporated waste gas, along with the mother liquor, is discharged from the equipment through the exhaust pipe. Some centrifugal drying devices also include a stirring rack operating in the opposite direction to the centrifuge drum's rotation. While the centrifuge drum rotates at high speed, the stirring rack continuously agitates the crystals inside, exposing the inner wall of the drum. This prevents the inner wall from being blocked by the crystals, which would affect the outflow of the mother liquor. It also allows the crystals to come into more complete contact with the hot air, thus enabling dibromobiphenyl to dry more quickly. In traditional centrifugal drying devices for chemical production, the size of the stirring rack is fixed and cannot accommodate centrifuge drums of different diameters simultaneously. It requires replacing the rack by loosening or tightening a large number of bolts, which is quite inconvenient. The rotation trajectory of the stirring rack is also singular, resulting in crystals that are not on the movement path of the stirring rack not being fully agitated, affecting the outflow of the mother liquor and the drying efficiency of dibromobiphenyl. Therefore, we propose a centrifugal drying device for chemical production. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the existing defects and provide a centrifugal drying device for chemical production. It can be adjusted to adapt to centrifuge barrels of different diameters and can more evenly agitate the crystals, avoiding blockage of the inner wall of the centrifuge barrel by the accumulation of crystals. This improves the outflow efficiency of the mother liquor and the drying efficiency of dibromobiphenyl, and can effectively solve the problems in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a centrifugal drying device for chemical production, comprising a drying cylinder and a uniform drying mechanism; Drying cylinder: It has a rotatable centrifuge drum inside, and a top cover at the top end. A central shaft is rotatably connected inside the top cover. Uniform drying mechanism: It includes a sleeve, a corrugated groove, limiting posts, an extension rod, a scraper, and an adjustment mechanism. The sleeve is movably fitted onto the outer surface of the central shaft. The corrugated groove is formed at the upper end of the outer surface of the sleeve. The limiting posts are respectively set on the left and right sides of the middle of the top wall of the top cover. The outer surface of the limiting posts is slidably connected to the inner wall of the corrugated groove. The outer surface of the sleeve is provided with an extension rod. The scraper is set inside the extension rod on the side away from the sleeve, so that the scraper can move up and down along the trajectory of the corrugated groove while rotating. The adjustment mechanism is set between the sleeve and the extension rod. It can be adjusted to adapt to centrifuges of different diameters and can more evenly agitate the crystals, avoiding the inner wall of the centrifuge from being blocked by the accumulation of crystals, thus improving the outflow efficiency of the mother liquor and the drying efficiency of dibromobiphenyl.

[0005] Furthermore, the adjustment mechanism includes mounting posts, an adjusting ring, a rotating ring, and a bellows. The mounting posts are all located on the outer surface of the sleeve. Vertically adjacent mounting posts are arranged in a cross pattern with the axis of the sleeve as the center. The side of the outer surface of the extension rod near the middle of the sleeve is slidably connected to the inner wall of the mounting post. The adjusting ring is rotatably connected to the side of the outer surface of the mounting post away from the middle of the sleeve. The side of the inner wall of the adjusting ring away from the middle of the sleeve is threadedly connected to the outer surface of the horizontally adjacent extension rod. The rotating ring is rotatably connected to the middle of the outer surface of the extension rod. A bellows is provided between the side of the adjusting ring away from the middle of the sleeve and the side of the rotating ring near the middle of the sleeve. The bellows are all sleeved on the outer surface of the extension rod, providing a basis for adjusting the position of the scraper.

[0006] Furthermore, the adjustment mechanism also includes silicone strips, which are all located on the outer surface of the scraper away from the middle of the sleeve. The outer surface of the silicone strips is fitted to the inner wall of the centrifuge tank. The flexible silicone strips can effectively reduce the wear of the inner wall of the centrifuge tank.

[0007] Furthermore, the uniform drying mechanism also includes a motor, which is located at the upper center of the top cover. The input end of the motor is electrically connected to the output end of the microcontroller, and the lower end of the output shaft of the motor is fixedly connected to the upper end of the central shaft, providing a stable driving effect for the rotation of the scraper.

[0008] Furthermore, it also includes a rotating base and a second motor. The rotating base is rotatably connected to the middle of the bottom wall of the drying cylinder. The lower end of the centrifuge barrel is inserted into the upper end of the rotating base. The second motor is located in the middle of the lower end of the drying cylinder. The input end of the second motor is electrically connected to the output end of the microcontroller. The upper end of the output shaft of the second motor is fixedly connected to the lower end of the rotating base, providing a foundation for the installation and high-speed rotation of the centrifuge barrel.

[0009] Furthermore, the top cover has a discharge pipe on both the left and right sides of the rear side, an air supply pipe on both the left and right sides of the front side, and an exhaust pipe on both the left and right sides and the rear end of the lower surface of the drying cylinder, providing a basis for the delivery and discharge of hot air and stable material feeding.

[0010] Furthermore, it also includes limiting heads and fixing knobs. The limiting heads are respectively set on the front and rear sides of the upper end of the drying cylinder. The front and rear sides of the top cover are provided with clearance openings. The inner walls of the clearance openings are fitted with the outer surfaces of the vertically adjacent limiting heads. The fixing knobs are threaded into the inside of the limiting heads. The front and rear sides of the upper end of the top cover are provided with through holes. The lower ends of the outer surfaces of the fixing knobs are inserted into the inner walls of the vertically adjacent through holes, which can quickly fix and release the top cover.

[0011] Furthermore, it also includes a microcontroller, which is located on the right side of the outer surface of the drying cylinder. The input terminal of the microcontroller is electrically connected to an external power supply to provide control for the centrifugal drying of dibromobiphenyl.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This centrifugal drying device for chemical production has the following advantages: 1. By rotating the adjusting ring, the extension rod can be moved, which in turn moves the scraper and silicone strip, thus achieving scraper position adjustment. This allows the scraper to be adapted to centrifuges of different diameters without the need to disassemble and replace a large number of bolts.

[0013] 2. By using the limiting column to compress the corrugated groove, the sleeve can move up and down continuously along the trajectory of the corrugated groove during rotation. This causes the scraper and silica gel strip to move up and down during rotation, ensuring that the position of the silica gel strip in contact with the inner wall of the centrifuge barrel is different at each moment. This allows for more even agitation of the crystals inside the centrifuge barrel, preventing crystals from being missed if they are not on the movement path. It also allows the crystals to have better contact with the hot air, further improving the drying efficiency of dibromobiphenyl. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic cross-sectional view of the uniform drying mechanism of this utility model; Figure 3 This is a schematic cross-sectional view of the adjustment mechanism of this utility model; Figure 4 This is a schematic diagram of the centrifuge tank structure of this utility model.

[0015] In the diagram: 1. Drying cylinder, 2. Centrifuge tank, 3. Top cover, 4. Central shaft, 5. Uniform drying mechanism, 51. Sleeve, 52. Corrugated groove, 53. Limiting post, 54. Extension rod, 55. Scraper, 56. Motor 1, 57. Adjustment mechanism, 571. Mounting post, 572. Adjusting ring, 573. Rotating ring, 574. Corrugated pipe, 575. Silicone strip, 6. Rotating seat, 7. Motor 2, 8. Feed pipe, 9. Air supply pipe, 10. Exhaust pipe, 11. Limiting head, 12. Clearance opening, 13. Fixing knob, 14. Microcontroller. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1-4 This embodiment provides a technical solution: a centrifugal drying device for chemical production, including a drying cylinder 1 and a uniform drying mechanism 5; Drying cylinder 1: It contains a rotatable centrifuge drum 2. The inner wall of the centrifuge drum 2 is lined with evenly distributed filter screens. A top cover 3 is located at the top end of the drying cylinder 1. A central shaft 4 is rotatably connected to the center of the top cover 3. The lower end of the central shaft 4 is inserted into a slot in the middle of the bottom wall of the centrifuge drum 2. A bearing is located inside the slot. The outer ring of the bearing is fixedly connected to the inner wall of the slot, and the inner ring of the bearing is fixedly connected to the lower end of the outer surface of the central shaft 4. It also includes a rotating base 6 and a motor 7. The rotating base 6 is rotatably connected to the middle of the bottom wall of the drying cylinder 1. The lower end of centrifuge drum 2 is inserted into the upper end of rotating base 6. The lower end of centrifuge drum 2 has evenly distributed insertion holes, and the upper end of rotating base 6 has evenly distributed insertion posts. After the insertion holes and posts are inserted, the lower end of centrifuge drum 2 fits snugly against the upper end of rotating base 6. Motor 2 7 is located in the middle of the lower end of drying cylinder 1. The input end of motor 2 7 is electrically connected to the output end of microcontroller 14. The upper end of the output shaft of motor 2 7 is fixedly connected to the lower end of rotating base 6, providing a foundation for the installation and high-speed rotation of centrifuge drum 2. The rear side of the inside of top cover 3... The drying cylinder 1 has discharge pipes 8 at both ends, air supply pipes 9 at both ends of the front side of the top cover 3, and exhaust pipes 10 at the lower left and right sides and rear end of the outer surface of the drying cylinder 1, providing a basis for hot air delivery and discharge and stable material feeding. It also includes limiting heads 11 and fixing knobs 13. The limiting heads 11 are respectively set on the front and rear sides of the upper end of the drying cylinder 1. The front and rear sides of the top cover 3 have clearance openings 12. The inner walls of the clearance openings 12 are fitted with the outer surfaces of the vertically adjacent limiting heads 11. The device includes a limit head 11 that can pass through the interior of the clearance opening 12, and a fixing knob 13 that is threaded into the interior of the limit head 11. The top cover 3 has through holes on both the front and rear sides. The lower end of the outer surface of the fixing knob 13 is inserted into the inner wall of the vertically adjacent through hole, which can quickly fix and release the top cover 3. It also includes a microcontroller 14, which is located in the middle right side of the outer surface of the drying cylinder 1. The input end of the microcontroller 14 is electrically connected to an external power supply to provide control for the centrifugal drying of dibromobiphenyl. Uniform drying mechanism 5: It includes a sleeve 51, a corrugated groove 52, limiting posts 53, an extension rod 54, a scraper 55, and an adjusting mechanism 57. The sleeve 51 is movably fitted onto the outer surface of the central shaft 4. The upper end of the outer surface of the central shaft 4 is circular, and the lower end is hexagonal. The hexagonal outer surface can drive the sleeve 51 to rotate without affecting the up-and-down movement of the sleeve 51. The corrugated groove 52 is formed at the upper end of the outer surface of the sleeve 51. The limiting posts 53 are respectively set on the left and right sides of the middle of the top wall of the top cover 3. The outer surface of the limiting posts 53 is slidably connected to the inner wall of the corrugated groove 52. The outer surface of the sleeve 51 is provided with an extension rod 54. The scraper 55 is set inside the extension rod 54 on the side away from the sleeve 51, so that the scraper 55 can rotate and move with the corrugated groove. The trajectory of 52 moves up and down. An adjustment mechanism 57 is located between the sleeve 51 and the extension rod 54. The adjustment mechanism 57 includes mounting posts 571, an adjusting ring 572, a rotating ring 573, and a bellows 574. The mounting posts 571 are all located on the outer surface of the sleeve 51. Vertically adjacent mounting posts 571 are arranged in a cross pattern with the axis of the sleeve 51 as the center. The outer surface of the extension rod 54, near the middle of the sleeve 51, is slidably connected to the inner wall of the mounting posts 571. A limiting protrusion is provided on the upper end of the outer surface of the extension rod 54, near the middle of the sleeve 51. A limiting groove is provided on the upper end of the inner wall of the mounting posts 571. The outer surface of the limiting protrusion is slidably connected to the inner wall of the vertically adjacent limiting groove, providing sliding limit for the extension rod 54. The adjusting ring 572 is rotatably connected to... The outer surface of the mounting post 571, away from the middle of the sleeve 51, and the inner wall of the adjusting ring 572, away from the middle of the sleeve 51, are threadedly connected to the outer surface of the laterally adjacent extension rod 54. The rotating ring 573 is rotatably connected to the middle of the outer surface of the extension rod 54. A bellows 574 is provided between the side of the adjusting ring 572 away from the middle of the sleeve 51 and the side of the rotating ring 573 near the middle of the sleeve 51. The bellows 574 are sleeved on the outer surface of the extension rod 54. The bellows 574 contract and expand as the extension rod 54 moves, and also rotate with the rotation of the adjusting ring 572. The rotating ring 573 provides rotational support for the bellows 574, ensuring that the external threads on the surface of the extension rod 54 are not affected by the external environment, thus supporting the scraper 55. The position adjustment mechanism 57 provides a foundation and also includes silicone strips 575. The silicone strips 575 are all located on the outer surface of the scraper 55 away from the middle of the sleeve 51. The outer surface of the silicone strips 575 is fitted to the inner wall of the centrifuge tank 2, effectively reducing wear on the inner wall. The uniform drying mechanism 5 also includes a motor 56, located at the upper center of the top cover 3. The input of the motor 56 is electrically connected to the output of the microcontroller 14, and the lower end of the output shaft of the motor 56 is fixedly connected to the upper end of the central shaft 4, providing a stable drive for the rotation of the scraper 55. This mechanism can adapt to centrifuge tanks 2 of different diameters and more evenly agitate the crystals.This prevents the inner wall of centrifuge tank 2 from being blocked by crystal buildup, thus improving the outflow efficiency of the mother liquor and the drying efficiency of dibromobiphenyl.

[0018] The working principle of the centrifugal drying device for chemical production provided by this utility model is as follows: Before centrifugal drying of dibromobiphenyl, adjustment is performed first. The position of the scraper 55 is adjusted according to the inner diameter of the centrifuge tank 2. The adjusting ring 572 is rotated. When the adjusting ring 572 is rotated clockwise, the extension rod 54 moves outward. When the adjusting ring 572 is rotated counterclockwise, the extension rod 54 moves inward, thereby adjusting the position of the scraper 55 until the scraper 55 moves to the appropriate position according to the inner diameter of the centrifuge tank 2. When the adjusting ring 572 is rotated, the rotating ring 573 and the bellows 574 will also rotate. At the same time, when the extension rod 54 moves, the bellows 574 will also contract and expand with the movement of the extension rod 54. Then, the centrifuge tank 2 is installed, and the insertion hole at the lower end of the centrifuge tank 2 is aligned with the centrifuge tank 2. Rotate the insert above the rotating seat 6 until it is in an inserted state with the insertion hole. The lower end of the centrifuge tank 2 is attached to the upper end of the rotating seat 6, completing the installation of the centrifuge tank 2. Then, lift the top cover 3, move it above the drying cylinder 1, and then lower it. Align the clearance opening 12 on the top cover 3 with the limiting head 11. Then, put the top cover 3 on top of the drying cylinder 1. The limiting head 11 passes through the clearance opening 12, and the lower end of the central shaft 4 is inserted into the slot on the bottom wall of the centrifuge tank 2. Then, rotate the top cover 3 so that the fixing knob 13 on the limiting head 11 is vertically adjacent to the through hole. Rotate the fixing knob 13, and the fixing knob 13 moves down until the lower end of the outer surface of the fixing knob 13 is inserted into the through hole, forming a limiting effect on the through hole and the top cover 3, completing the installation of the top cover 3. Then, connect the pipes. In operation, the external conveying pipe is connected to the discharge pipe 8, the air supply pipe 9 is connected to the external air heating equipment through the connecting pipe 1, and the exhaust pipe 10 is connected to the external crystallization device through the connecting pipe 2. At this point, the centrifugal drying of dibromobiphenyl can begin. The crystals containing the mother liquor are conveyed from the discharge pipe 8 into the centrifuge tank 2 through the external conveying pipe. The microcontroller 14 controls the operation of the motor 7, and the output shaft of the motor 7 drives the rotating seat 6 to rotate. The centrifuge tank 2 rotates at high speed, and the resulting centrifugal force causes the crystals inside the centrifuge tank 2 to accumulate. The crystals are blocked by the filter screen on the surface of the centrifuge tank 2, while the mother liquor is thrown out of the centrifuge tank 2 by the centrifugal force and then collects at the bottom wall of the drying cylinder 1. The mother liquor is then discharged through the exhaust pipe 10 and the connecting pipe 2. The second connector is sent back into the external crystallization device for secondary crystallization. Simultaneously, an external air heating device heats filtered air to a suitable temperature, then sends it into the centrifuge tank 2 through connecting pipe 1 and air supply pipe 9. As the hot air passes over the surface of the crystals, a small amount of mother liquor adhering to the surface is evaporated. This evaporated mother liquor is then sent back into the external crystallization device through exhaust pipe 10 and connecting pipe 2 for secondary crystallization. Simultaneously, as the centrifuge tank 2 rotates at high speed, the microcontroller 14 controls the motor 56 to rotate as well. The output shaft of motor 56 drives the central shaft 4 to rotate. With the rotation of the central shaft 4, the sleeve 51 rotates synchronously, driving the mounting column 571 and extension rod 54 to rotate. The scraper 55 also rotates, and the silicone strip 575 contacts the inner wall of the centrifuge tank 2.It can scrape off the crystals adhering to the inner wall of the centrifuge tank 2 due to centrifugal force, providing a basis for the rapid outflow of mother liquor. As the sleeve 51 rotates, the corrugated trough 52 also rotates. At this time, with the rotation of the corrugated trough 52, under the pressure of the limiting column 53, when the crest of the corrugated trough 52 contacts the limiting column 53, the sleeve 51 moves down; when the trough of the corrugated trough 52 contacts the limiting column 53, the sleeve 51 moves up. As the corrugated trough 52 rotates, the sleeve 51 moves up and down continuously along the trajectory of the corrugated trough 52, causing the scraper 55 and the silicone strip 575 to move up and down as well, cooperating with... The high-speed rotation of centrifuge drum 2 ensures that the silica gel strip 575 contacts the inner wall of the drum 2 at different times, thus more evenly agitating the crystals inside. This prevents crystals from being missed due to being outside the movement path, improving the agitation effect and allowing for better contact between the crystals and the hot air, further enhancing the drying efficiency. The dried crystals form dibromobiphenyl crystals. Once a certain amount of dibromobiphenyl crystals have accumulated inside centrifuge drum 2, the top cover 3 can be opened, and the centrifuge drum 2 can be lifted out to collect the dried dibromobiphenyl crystals.

[0019] It is worth noting that the microcontroller 14 disclosed in the above embodiments is an STM32F405RGT6 microcontroller, motor 56 is an SZG22-F motor, and motor 7 is a YE3-180M-2 motor. The microcontroller 14 controls the operation of motor 56 and motor 7 using methods commonly used in the prior art.

[0020] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A centrifugal drying device for chemical production, characterized in that: It includes a drying cylinder (1) and a uniform drying mechanism (5); Drying cylinder (1): It is equipped with a rotatable centrifuge barrel (2) inside. The top end of the drying cylinder (1) is equipped with a top cover (3). The middle of the top cover (3) is rotatably connected to a central shaft (4). Uniform drying mechanism (5): It includes a sleeve (51), a wave groove (52), a limiting post (53), an extension rod (54), a scraper (55), and an adjustment mechanism (57). The sleeve (51) is movably sleeved on the outer surface of the central shaft (4). The wave groove (52) is opened on the upper part of the outer surface of the sleeve (51). The limiting post (53) is respectively set on the left and right sides of the middle of the top wall of the top cover (3). The outer surface of the limiting post (53) is slidably connected to the inner wall of the wave groove (52). The outer surface of the sleeve (51) is provided with an extension rod (54). The scraper (55) is set on the side of the extension rod (54) away from the sleeve (51). The adjustment mechanism (57) is set between the sleeve (51) and the extension rod (54).

2. The centrifugal drying device for chemical production according to claim 1, characterized in that: It also includes a microcontroller (14), which is located on the right side of the outer surface of the drying cylinder (1), and the input terminal of the microcontroller (14) is electrically connected to an external power supply.

3. The centrifugal drying device for chemical production according to claim 1, characterized in that: The adjustment mechanism (57) includes mounting posts (571), adjusting rings (572), rotating rings (573), and bellows (574). The mounting posts (571) are all located on the outer surface of the sleeve (51). Vertically adjacent mounting posts (571) are arranged in a cross pattern with the axis of the sleeve (51) as the center. The side of the outer surface of the extension rod (54) near the middle of the sleeve (51) is slidably connected to the inner wall of the mounting posts (571). The adjusting ring (572) is rotatably connected to the mounting posts (571). The outer surface away from the middle of the sleeve (51) and the inner wall of the adjusting ring (572) away from the middle of the sleeve (51) are threadedly connected to the outer surface of the laterally adjacent extension rod (54). The rotating ring (573) is rotatably connected to the middle of the outer surface of the extension rod (54). A bellows (574) is provided between the side of the adjusting ring (572) away from the middle of the sleeve (51) and the side of the rotating ring (573) close to the middle of the sleeve (51). The bellows (574) are all sleeved on the outer surface of the extension rod (54).

4. The centrifugal drying device for chemical production according to claim 1, characterized in that: The adjustment mechanism (57) also includes silicone strips (575), which are all located on the outer surface of the scraper (55) away from the middle of the sleeve (51), and the outer surface of the silicone strips (575) are all fitted with the inner wall of the centrifuge tank (2).

5. A centrifugal drying device for chemical production according to claim 2, characterized in that: The uniform drying mechanism (5) also includes a motor (56), which is located at the upper middle part of the top cover (3). The input end of the motor (56) is electrically connected to the output end of the microcontroller (14), and the lower end of the output shaft of the motor (56) is fixedly connected to the upper end of the central shaft (4).

6. A centrifugal drying device for chemical production according to claim 2, characterized in that: It also includes a rotating seat (6) and a second motor (7). The rotating seat (6) is rotatably connected to the middle of the bottom wall of the drying cylinder (1). The lower end of the centrifuge barrel (2) is inserted into the upper end of the rotating seat (6). The second motor (7) is located in the middle of the lower end of the drying cylinder (1). The input end of the second motor (7) is electrically connected to the output end of the microcontroller (14). The upper end of the output shaft of the second motor (7) is fixedly connected to the lower end of the rotating seat (6).

7. A centrifugal drying device for chemical production according to claim 1, characterized in that: The top cover (3) has a feeding pipe (8) on both the left and right sides of the rear side inside, and an air supply pipe (9) on both the left and right sides of the front side inside, and an exhaust pipe (10) on both the left and right sides and the rear end of the outer surface of the drying cylinder (1).

8. A centrifugal drying device for chemical production according to claim 1, characterized in that: It also includes a limiting head (11) and a fixing knob (13). The limiting head (11) is respectively set on the front and rear sides of the upper end of the drying cylinder (1). The front and rear sides of the top cover (3) are provided with clearance openings (12). The inner wall of the clearance opening (12) is fitted with the outer surface of the vertically adjacent limiting head (11). The fixing knob (13) is threaded to the inside of the limiting head (11). The front and rear sides of the upper end of the top cover (3) are provided with through holes. The lower end of the outer surface of the fixing knob (13) is inserted into the inner wall of the vertically adjacent through hole.

Images