A centrifugal-airflow combined low-temperature rapid drying device for heat-sensitive materials

Abstract

The application relates to a centrifugal-airflow combined low-temperature rapid drying device for heat-sensitive materials, belonging to the technical field of heat-sensitive materials, which comprises a support, a drying cylinder fixedly arranged in the support, a driving mechanism fixedly arranged at the upper end of the drying cylinder, a feeding mechanism and an airflow mechanism fixedly arranged on the side surface of the drying cylinder, a discharging mechanism fixedly arranged at the lower end of the drying cylinder, a centrifugal mechanism arranged in the drying cylinder, a guide mechanism arranged in the centrifugal mechanism, wherein the guide mechanism comprises a guide disc, a guide sliding groove is arranged on the side surface of the guide disc, and the guide sliding groove is composed of a plurality of semicircular sliding grooves, a plurality of guide recesses and a plurality of guide protrusions which are sequentially connected in a head-tail mode. The centrifugal mechanism can throw away the water on the raw materials through high-speed rotation, and the water can be discharged through airflow, so that the raw materials can be rapidly dried, and the processing quality is high and the drying efficiency is high.

Description

Technical Field

[0001] This invention relates to the field of heat-sensitive materials technology, specifically to a centrifugal-airflow combined low-temperature rapid drying device for heat-sensitive materials. Background Technology

[0002] The centrifugal-airflow combined low-temperature rapid drying device for heat-sensitive materials is a drying system specifically designed for heat-sensitive materials.

[0003] Ferrous sulfate heptahydrate, commonly known as green vitriol, is the most common crystalline hydrate of ferrous sulfate. It exists in nature as a mineral called ferrous sulfate hydrous water. It has a wide range of applications, including as a water treatment flocculant, an agricultural iron fertilizer, a raw material for iron supplementation in medicine, and is also used in the manufacture of iron oxide pigments, inks, and feed additives.

[0004] Before further processing, ferrous sulfate heptahydrate needs to be dried. Existing drying methods usually involve heating and temperature control, or centrifugal drying. However, since the material being dried is heat-sensitive and the temperature control of existing ferrous sulfate heptahydrate drying equipment is difficult, the raw material is prone to oxidation due to temperature, which reduces the processing quality. At the same time, centrifugal drying causes the raw material to stick to the inner wall of the drying cylinder due to centrifugal force, preventing the inside of the raw material from being dried, resulting in long drying time and uneven drying. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a centrifugal-airflow combined low-temperature rapid drying device for heat-sensitive materials, which solves the problems of low processing quality, low drying efficiency, and uneven drying.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a centrifugal-airflow combined low-temperature rapid drying device for heat-sensitive materials, comprising a support frame, a drying cylinder fixedly installed inside the support frame, a driving mechanism fixedly installed at the upper end of the drying cylinder, a feeding mechanism and an airflow mechanism fixedly installed on one side surface of the drying cylinder, a discharge mechanism fixedly installed at the lower end of the drying cylinder, a centrifugal mechanism provided inside the drying cylinder, and a guiding mechanism provided inside the centrifugal mechanism;

[0007] The guiding mechanism includes a guide disk, and a guide groove is formed on one side surface of the guide disk. The guide groove is composed of a number of semi-circular grooves, a number of guide grooves, and a number of guide protrusions connected end to end in sequence. The guide grooves and the guide protrusions are alternately distributed along the circumference of the guide groove, and the guide grooves and the guide protrusions are connected by the semi-circular grooves.

[0008] The centrifuge mechanism includes a cylinder with several filter holes extending through its outer side. Several pull rods are fixedly installed inside the cylinder, with both ends of the pull rods extending to the outer side of the cylinder. Rolling balls are engaged at both ends of the pull rods, and the outer side of the rolling balls slides against the inner wall of the guide groove.

[0009] Furthermore, a drive disc is provided on the outer side of both ends of the pull rod, and two symmetrically distributed fixing plates are fixedly installed on the outer side of both ends of the pull rod. Several moving slots are opened through the center of the drive disc.

[0010] Furthermore, the fixing plate is composed of two arc blocks. A telescopic rod and a spring are fixedly installed on the surface of the two fixing plates away from the pull rod. The telescopic rod and the spring are fixedly connected to the inner wall of the moving groove on the side away from the fixing plate, and the spring is sleeved on the outside of the telescopic rod.

[0011] Furthermore, the drive mechanism includes a motor, the output end of which is fixedly connected to a gearbox, and the motor is fixedly mounted on the upper surface of the gearbox. The output end of the gearbox is fixedly connected to a rotating main shaft, and a scattering mechanism is fixedly mounted on the outside of the rotating main shaft. The scattering mechanism includes a receiving plate, and a scattering groove is formed on the upper surface of the receiving plate. There are several scattering mechanisms, which are evenly distributed along the axial direction of the rotating main shaft.

[0012] Furthermore, two fixing rings are fixedly installed on the outer surface of the rotating spindle, and a connecting frame is fixedly installed on the periphery of the fixing rings. The outer side of the connecting frame is fixedly connected to the inner wall of the drive disk.

[0013] Furthermore, the drying cylinder is composed of a circular cylinder, a conical cylinder, and a top cover. The upper end of the circular cylinder is fixedly connected to the lower end of the conical cylinder, and the lower end of the circular cylinder is fixedly connected to the upper end of the conical cylinder. The two guide discs are respectively fixedly connected to the inner wall of the circular cylinder and the inner wall of the top cover.

[0014] Furthermore, the airflow mechanism includes a temperature control box, an air inlet pipe fixedly installed at the upper end of the temperature control box, an air delivery pipe fixedly installed at the lower end of the temperature control box, a blower fixedly connected to the end of the air delivery pipe away from the temperature control box, the blower fixedly connected to one side of the bracket, and one surface of the temperature control box fixedly connected to one surface of the cylindrical tube, the end of the air inlet pipe away from the temperature control box fixedly connected to one side of the upper cover, and the air inlet pipe communicating with the interior of the upper cover.

[0015] Furthermore, guide grooves are provided on the inner walls of the moving groove on both sides, and two symmetrically distributed guide rods are fixedly installed on the outer side of the pull rod, with the end of the guide rod away from the pull rod slidingly connected to the inner wall of the guide groove.

[0016] Furthermore, the feeding mechanism includes a hopper, and a feeding channel is fixedly installed at the lower end of the hopper. The end of the feeding channel away from the hopper is fixedly connected to the outside of the conical cylinder, and the feeding channel communicates with the inside of the conical cylinder.

[0017] Furthermore, the discharge mechanism includes a discharge port, the upper end of which is fixedly connected to the lower end of the upper cover and communicates with the interior of the upper cover. An exhaust port is fixedly installed on the outside of the discharge port and communicates with the interior of the discharge port.

[0018] Compared with the prior art, the present invention provides a centrifugal-airflow combined low-temperature rapid drying device for heat-sensitive materials, which has the following beneficial effects:

[0019] 1. By setting up a centrifugal mechanism, the present invention can remove moisture from the raw materials through high-speed rotation, and at the same time, the moisture is discharged by airflow, so that the raw materials can be dried quickly, thereby achieving the effect of high processing quality and high drying efficiency.

[0020] 2. By setting up a guiding mechanism, the present invention can cooperate with the pull rod to make the cylinder change in a regular wave shape. In turn, through the wave shape change, the raw material tumbles on the inner wall of the cylinder, ensuring full contact with the airflow and enhancing the effect of the airflow in carrying moisture, thereby achieving the effects of high processing quality, high drying efficiency and uniform drying.

[0021] 3. By setting up a throwing mechanism, the present invention can throw the raw material against the inner wall of the cylinder through a high-speed rotating throwing mechanism. During the throwing process, the raw material can come into contact with the airflow, thereby achieving the effects of high processing quality, high drying efficiency and uniform drying.

[0022] 4. By setting up an airflow mechanism, this invention can achieve a continuous and stable low-temperature airflow, ensuring that the raw materials do not change during the drying process, thus laying the foundation for subsequent processing. At the same time, the airflow can carry away moisture, ensuring the drying of the raw materials, thereby achieving high processing quality, high drying efficiency, and uniform drying. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 This is a side view of the structure of the present invention;

[0025] Figure 3 This is a schematic diagram of the hopper structure of the present invention;

[0026] Figure 4 This is a schematic diagram of the discharge port structure of the present invention;

[0027] Figure 5This is a schematic diagram of the cross-sectional structure of the circular cylinder of the present invention;

[0028] Figure 6 This is a schematic diagram of the centrifuge mechanism of the present invention;

[0029] Figure 7 This is a schematic diagram of the active spindle structure of the present invention;

[0030] Figure 8 This is a schematic diagram of the tie rod structure of the present invention;

[0031] Figure 9 This is a schematic diagram of the drive disk structure of the present invention;

[0032] Figure 10 This is an enlarged schematic diagram of the structure at point A of the present invention;

[0033] Figure 11 This is a schematic diagram of the cross-sectional structure of the tie rod of the present invention;

[0034] Figure 12 This is an enlarged schematic diagram of the structure at point B of the present invention;

[0035] Figure 13 This is a schematic diagram of the guide disk structure of the present invention;

[0036] Figure 14 This is an enlarged schematic diagram of the structure at point C in this invention.

[0037] In the diagram: 1. Support; 2. Drying cylinder; 21. Circular cylinder; 22. Conical cylinder; 23. Top cover;

[0038] 31. Airflow mechanism; 32. Temperature control box; 33. Air inlet pipe; 34. Air delivery pipe; 35. Blower;

[0039] Discharge mechanism; 41. Discharge port; 42. Exhaust port;

[0040] Drive mechanism; 51. Motor; 52. Gearbox; 53. Rotating spindle;

[0041] Centrifuge mechanism; 61. Fixed ring; 62. Connecting frame; 63. Drive disc; 64. Cylinder; 65. Filter hole; 66. Moving groove; 67. Tie rod; 68. Rolling ball; 69. Fixed plate; 610. Telescopic rod; 611. Spring; 612. Guide groove; 613. Guide rod;

[0042] Guide mechanism; 71. Guide plate; 72. Guide groove; 73. Guide protrusion; 74. Guide recess; 75. Semicircular groove;

[0043] Spreading mechanism; 81. Receiving plate; 82. Spreading chute;

[0044] 9. Feeding mechanism; 91. Hopper; 92. Feeding channel. Detailed Implementation

[0045] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0046] Please see Figures 1 to 14 This embodiment of a centrifugal-airflow combined low-temperature rapid drying device for heat-sensitive materials includes a support 1, a drying cylinder 2 fixedly installed inside the support 1, the drying cylinder 2 is composed of a circular cylinder 21, a conical cylinder 22 and a top cover 23, the upper end of the circular cylinder 21 is fixedly connected to the lower end of the conical cylinder 22, the lower end of the circular cylinder 21 is fixedly connected to the upper end of the conical cylinder 22, and a drive mechanism 5 is fixedly installed on the upper end of the drying cylinder 2;

[0047] The drive mechanism 5 includes a motor 51, the output end of which is fixedly connected to a gearbox 52, and the motor 51 is fixedly mounted on the upper surface of the gearbox 52. The output end of the gearbox 52 is fixedly connected to a rotating main shaft 53. Two fixing rings 61 are fixedly mounted on the outer surface of the rotating main shaft 53. A connecting frame 62 is fixedly mounted around the fixing rings 61. The outer side of the connecting frame 62 is fixedly connected to the inner wall of the drive disk 63. The drive disk 63 can be rotated by the connecting frame 62 following the rotation of the rotating main shaft 53. A spreading mechanism 8 is fixedly mounted on the outer side of the rotating main shaft 53.

[0048] The scattering mechanism 8 includes a receiving plate 81 with a scattering groove 82 on its upper surface. The receiving plate 81 can catch the falling raw materials and simultaneously throw them out along the scattering groove 82 by the centrifugal force generated by its rotation. During the falling and throwing process, the low-temperature airflow has already performed two drying processes, thus ensuring the drying effect of the raw materials. There are several scattering mechanisms 8, which are evenly distributed along the rotation axis 53, and the scattering mechanisms 8 and the scattering mechanism 8 above each other have an intersecting effect when viewed from above. Furthermore, several scattering mechanisms 8 can form a ring shape to ensure that the raw materials can fall onto the scattering chute 82 when the scattering mechanism 8 rotates, thus avoiding the raw materials from falling directly into the conical cylinder 22, which would result in poor drying effect. A feeding mechanism 9 and an airflow mechanism 3 are fixedly installed on one side surface of the drying cylinder 2. The feeding mechanism 9 includes a hopper 91, and a feeding channel 92 is fixedly installed at the lower end of the hopper 91. The end of the feeding channel 92 away from the hopper 91 is fixedly connected to the outside of the upper cover 23, and the feeding channel 92 communicates with the inside of the upper cover 23.

[0049] The airflow mechanism 3 includes a temperature control box 31, which adjusts the temperature of the passing airflow to ensure that the raw materials are not affected by high temperatures, thus preventing a reduction in processing quality. The temperature control box 31 is existing technology and will not be described in detail here. One surface of the temperature control box 31 is fixedly connected to one surface of the cylindrical cylinder 21. An air inlet pipe 32 is fixedly installed on the upper end of the temperature control box 31. The end of the air inlet pipe 32 away from the temperature control box 31 is fixedly connected to one side of the upper cover 23, and the air inlet pipe 32 communicates with the interior of the upper cover 23. Replaceable filters are installed at the air inlet pipe 32 and the upper cover 23. This prevents raw materials from entering the air inlet pipe 32 and external impurities from entering the drying cylinder 2. The filter screen is existing technology and will not be described in detail here, nor is it shown in the figure. An air supply pipe 33 is fixedly installed at the lower end of the temperature control box 31. A blower 34 is fixedly connected to the end of the air supply pipe 33 away from the temperature control box 31. The blower 34 can provide airflow to the inside of the drying cylinder 2, thereby ensuring the drying effect of the raw materials. The blower 34 is existing technology and will not be described in detail here. The blower 34 is fixedly connected to one side of the bracket 1. An exhaust mechanism 4 is fixedly installed at the lower end of the drying cylinder 2.

[0050] The discharge mechanism 4 includes a discharge port 41, the upper end of which is fixedly connected to the lower end of the conical cylinder 22, and the discharge port 41 communicates with the interior of the conical cylinder 22. An exhaust port 42 is fixedly installed on the outside of the discharge port 41 for airflow discharge. A filter screen is installed between the discharge port 41 and the exhaust port 42, and the exhaust port 42 communicates with the interior of the discharge port 41. The drying cylinder 2 is equipped with a centrifugal mechanism 6, and the centrifugal mechanism 6 is equipped with a guiding mechanism 7. The guiding mechanism 7 includes guide discs 71, and the two guide discs 71 are fixedly connected to the inner walls of the circular cylinder 21 and the upper cover 23, respectively. This fixed connection ensures the stability of the guide discs 71. A guide groove 72 is formed on one side surface of the guide plate 71. The guide groove 72 is composed of several semi-circular grooves 75, several guide grooves 74, and several guide protrusions 73 connected end to end in sequence. The guide grooves 74 and guide protrusions 73 are alternately distributed around the guide groove 72, and the guide grooves 74 and guide protrusions 73 are connected by semi-circular grooves 75. One guide protrusion 73 and one guide groove 74 form a group. The guide grooves 74 and guide protrusions 73 in each group are distributed around the guide groove 72, and the semi-circular grooves 75 are used to connect the guide grooves 74 and guide protrusions 73 in each group with the guide grooves 74 and guide protrusions 73 in another group, thereby enabling the continuous sliding of the pull rod 67.

[0051] The centrifugal mechanism 6 includes a cylinder 64. A certain distance is maintained between the outer side of the cylinder 64 and the inner wall of the drying cylinder 2, preventing contact between them. The cylinder 64 is made of polyurethane. Several filter holes 65 are perforated on the outer side of the cylinder 64. The diameter of the filter holes 65 is smaller than the size of the raw material, thus preventing spillage. Simultaneously, the centrifugal force generated by high-speed rotation allows moisture to be discharged through the filter holes 65, and the moisture is also discharged through the exhaust port 42 via airflow. Several tie rods 67 are fixedly installed inside the cylinder 64. The outer side of the tie rods 67... Two guide rods 613 are fixedly installed in a symmetrical arrangement. The end of the guide rod 613 away from the pull rod 67 slides against the inner wall of the guide groove 612. The combination of the guide rod 613 and the guide groove 612 enables the pull rod 67 to move stably and accurately. Both ends of the pull rod 67 are provided with drive discs 63. Several moving grooves 66 are opened through the middle of the drive disc 63. Guide grooves 612 are opened on the inner walls of the moving grooves 66 on both sides. Both ends of the pull rod 67 are fixedly installed with two fixed plates 69 in a symmetrical arrangement.

[0052] The fixing plate 69 consists of two arc blocks, which wrap around the pull rod 67 to ensure the stability of the pull rod 67's movement. A telescopic rod 610 and a spring 611 are fixedly installed on the surface of the two fixing plates 69 away from the pull rod 67. When the rolling ball 68 leaves the guide groove 74 and guide protrusion 73, the spring 611 can quickly provide the pull rod 67 with the force to return to its original position. The elastic force of the spring 611 is greater than the centrifugal force. The telescopic rod 610 and the spring 611 are fixedly connected to the inner wall of the moving groove 66 on the side away from the fixing plate 69. The spring 611 is sleeved on the outside of the telescopic rod 610. Both ends of the pull rod 67 extend to the outside of the cylinder 64, and both ends of the pull rod 67 are engaged with rolling balls 68. The outer side of the rolling balls 68 slides against the inner wall of the guide groove 72. The rolling balls 68 can reduce friction, thereby ensuring the smooth rotation of the pull rod 67. The rolling balls 68 are made of silicon nitride ceramic material.

[0053] The working principle of the above embodiment is as follows: When the raw material drying begins, the motor 51 starts, the gearbox 52 runs, the main shaft 53 starts to rotate, and the spreading mechanism 8 rotates with the main shaft 53. At the same time, the temperature control box 31 and the blower 34 operate. The airflow enters the blower 34 and then enters the air supply pipe 33. After being temperature controlled by the temperature control box 31, the airflow enters the upper cover 23 and moves downward. The airflow is then discharged from the exhaust port 42. At this time, the raw material enters the hopper 91 and then enters the feed channel 92. It then enters the upper cover 23 and falls downward. The rotating receiving plate 81 receives the raw material and makes it slide along the spreading chute 82. The raw material is then thrown onto the inner wall of the cylinder 64. The rotation of the main shaft 53 drives the fixed ring 61 to rotate, and the connecting frame 62 rotates with the fixed ring 61. 61 can drive the drive disc 63, which in turn drives the pull rod 67. The rotation of the pull rod 67 drives the cylinder 64, causing the raw material to adhere to the inner wall of the cylinder 64 under centrifugal force. Simultaneously, the pull rod 67 rotates, and the rolling balls 68 at both ends slide along the guide grooves 72 on the guide disc 71. Guided by the guide protrusions 73 and guide grooves 74, the pull rod 67 can move. This movement pulls the pull rod to the position where it connects to the cylinder 64, causing the cylinder 64 to deform. While the raw material does not fall off under centrifugal force, it rolls and tumbles on the inner wall surface of the cylinder 64, ensuring full contact with the airflow and rapid removal of moisture. When drying is complete, the fixing ring 61 stops rotating, the cylinder 64 stops rotating, and the raw material, losing centrifugal force, falls due to its own gravity, thus completing the drying process.

[0054] The installation, connection, or setting methods disclosed in this embodiment are all common mechanical connection methods. Any method that can achieve its beneficial effect can be implemented. In addition, the electrical components in this embodiment are all electrically connected to the main controller and the power supply. The main controller can be a conventional known device such as a computer that plays a control role. Those skilled in the art can control the electrical components through simple programming. Moreover, the existing disclosed power connection technology is also common knowledge in the field. Therefore, the specific structural composition and working principle will not be described in detail in this embodiment.

Claims

1. A centrifugal-airflow combined low-temperature rapid drying device for heat-sensitive materials, comprising a support frame (1), characterized in that: The support (1) has a drying cylinder (2) fixedly installed inside. The upper end of the drying cylinder (2) has a drive mechanism (5) fixedly installed. The side surface of the drying cylinder (2) has a feeding mechanism (9) and an airflow mechanism (3) fixedly installed. The lower end of the drying cylinder (2) has a discharge mechanism (4) fixedly installed. The drying cylinder (2) has a centrifugal mechanism (6) inside. The centrifugal mechanism (6) has a guide mechanism (7) inside. The guiding mechanism (7) includes a guide disk (71), and a guide groove (72) is formed on one side surface of the guide disk (71). The guide groove (72) is composed of a number of semi-circular grooves (75), a number of guide grooves (74), and a number of guide protrusions (73) connected end to end in sequence. The guide grooves (74) and the guide protrusions (73) are alternately distributed around the guide groove (72), and the guide grooves (74) and the guide protrusions (73) are connected by the semi-circular grooves (75). The centrifugal mechanism (6) includes a cylinder (64), with several filter holes (65) extending through the outer side of the cylinder (64). Several pull rods (67) are fixedly installed inside the cylinder (64), with both ends of the pull rods (67) extending to the outer side of the cylinder (64), and both ends of the pull rods (67) being engaged with rolling balls (68). The outer side of the rolling balls (68) slides against the inner wall of the guide groove (72).

2. The centrifugal-airflow combined low-temperature rapid drying device for heat-sensitive materials according to claim 1, characterized in that: The pull rod (67) has a drive plate (63) on both outer sides of its two ends. Two fixed plates (69) are fixedly installed on both outer sides of its two ends. Several moving slots (66) are opened through the middle of the drive plate (63).

3. The centrifugal-airflow combined low-temperature rapid drying device for heat-sensitive materials according to claim 2, characterized in that: The fixing plate (69) is composed of two arc blocks. A telescopic rod (610) and a spring (611) are fixedly installed on the surface of the two fixing plates (69) away from the pull rod (67). The telescopic rod (610) and the spring (611) are fixedly connected to the inner wall of the moving groove (66) on the side away from the fixing plate (69), and the spring (611) is sleeved on the outside of the telescopic rod (610).

4. A centrifugal-airflow combined low-temperature rapid drying device for heat-sensitive materials according to claim 3, characterized in that: The drive mechanism (5) includes a motor (51), the output end of which is fixedly connected to a gearbox (52), and the motor (51) is fixedly mounted on the upper surface of the gearbox (52). The output end of the gearbox (52) is fixedly connected to a rotating main shaft (53), and a scattering mechanism (8) is fixedly mounted on the outside of the rotating main shaft (53). The scattering mechanism (8) includes a receiving plate (81), and a scattering groove (82) is provided on the upper surface of the receiving plate (81). There are several scattering mechanisms (8) and they are evenly distributed along the axial direction of the rotating main shaft (53).

5. A centrifugal-airflow combined low-temperature rapid drying device for heat-sensitive materials according to claim 4, characterized in that: Two fixing rings (61) are fixedly installed on the outer surface of the rotating spindle (53). A connecting frame (62) is fixedly installed on the periphery of the fixing rings (61). The outer side of the connecting frame (62) is fixedly connected to the inner wall of the drive disk (63).

6. A centrifugal-airflow combined low-temperature rapid drying device for heat-sensitive materials according to claim 1, characterized in that: The drying cylinder (2) is composed of a circular cylinder (21), a conical cylinder (22) and a top cover (23). The upper end of the circular cylinder (21) is fixedly connected to the lower end of the conical cylinder (22), and the lower end of the circular cylinder (21) is fixedly connected to the upper end of the conical cylinder (22). The two guide discs (71) are fixedly connected to the inner wall of the circular cylinder (21) and the inner wall of the top cover (23) respectively.

7. A centrifugal-airflow combined low-temperature rapid drying device for heat-sensitive materials according to claim 6, characterized in that: The airflow mechanism (3) includes a temperature control box (31), an air inlet pipe (32) is fixedly installed on the upper end of the temperature control box (31), an air delivery pipe (33) is fixedly installed on the lower end of the temperature control box (31), a blower (34) is fixedly connected to the end of the air delivery pipe (33) away from the temperature control box (31), the blower (34) is fixedly connected to one side of the bracket (1), and one side surface of the temperature control box (31) is fixedly connected to one side surface of the cylindrical tube (21), one side end of the air inlet pipe (32) away from the temperature control box (31) is fixedly connected to one side of the upper cover (23), and the air inlet pipe (32) communicates with the inside of the upper cover (23).

8. A centrifugal-airflow combined low-temperature rapid drying device for heat-sensitive materials according to claim 3, characterized in that: The moving groove (66) has guide grooves (612) on both sides of its inner wall. Two guide rods (613) are fixedly installed on the outside of the pull rod (67) and are symmetrically distributed. The end of the guide rod (613) away from the pull rod (67) slides with the inner wall of the guide groove (612).

9. A centrifugal-airflow combined low-temperature rapid drying device for heat-sensitive materials according to claim 6, characterized in that: The feeding mechanism (9) includes a hopper (91), and a feeding channel (92) is fixedly installed at the lower end of the hopper (91). The end of the feeding channel (92) away from the hopper (91) is fixedly connected to the outside of the upper cover (23), and the feeding channel (92) communicates with the inside of the upper cover (23).

10. A centrifugal-airflow combined low-temperature rapid drying device for heat-sensitive materials according to claim 9, characterized in that: The discharge mechanism (4) includes a discharge port (41), the upper end of which is fixedly connected to the lower end of the conical cylinder (22), and the discharge port (41) is connected to the interior of the conical cylinder (22). An exhaust port (42) is fixedly installed on the outside of the discharge port (41), and the exhaust port (42) is connected to the interior of the discharge port (41).

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