Medicine packaging material sterilizing and drying oven with heat circulation function

Abstract

The invention relates to the technical field of medicine packaging material production, in particular to a medicine packaging material sterilizing and drying oven with a heat circulation function. A supporting mechanism is inserted into the upper end of a perforated table, an induced draft fan is connected into a mounting chamber, the outlet end of the induced draft fan communicates with a dehumidification mechanism through a connecting pipe, and the upper end of the dehumidification mechanism communicates with a discharge pipe; one end of the discharging pipe extends into the drying chamber and communicates with a dispersing pipe, and a plurality of air holes are formed in the upper end of the dispersing pipe at equal intervals in the axis direction. Air in the dispersion pipe is released from different air holes, heat is recycled, the released air flows upwards, the air holes of the dispersion pipe uniformly release dry air, air flow penetrates through the perforated table, the perforated plate and the limiting seat from bottom to top, three-dimensional drying is formed, drying dead corners of the inner wall and the outer wall of the glass bottle are eliminated, and the drying effect of the glass bottle is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of pharmaceutical packaging material production, in particular to a pharmaceutical packaging material sterilization and drying oven with a heat circulation function. Background Art

[0002] Sterilization and drying of pharmaceutical packaging materials is a critical step in pharmaceutical production, directly impacting drug quality and patient safety. In the pharmaceutical manufacturing industry, pharmaceutical packaging materials, such as medical glass bottles, undergo high-temperature sterilization and drying, often using drying ovens.

[0003] When drying and sterilizing glass bottles in an existing drying oven, the glass bottles are placed in the drying oven, the temperature of the gas in the drying oven is increased by a heater, and the hot air is circulated by a power fan to achieve sterilization and drying. During the process of drying the glass bottles by the gas circulation process, there are drying dead corners on the outer wall of the glass bottle, resulting in some areas of the outer wall of the glass bottle cannot be dried, thereby reducing the drying effect of the glass bottle. Summary of the Invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art that there are drying dead corners on the outer wall of the glass bottle, which results in some areas of the outer wall of the glass bottle being unable to be dried, thereby reducing the drying effect of the glass bottle, and to propose a pharmaceutical packaging material sterilization and drying oven with heat circulation function.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A pharmaceutical packaging material sterilization and drying oven with a heat circulation function is designed, comprising a box body, a partition connected to the box body, the partition dividing the box body into a drying chamber and an installation chamber, the bottom end of the partition being fixedly connected to a reduction motor, the output end of the reduction motor being fixedly connected to a connecting shaft, one end of the connecting shaft passing through the partition and fixedly connected to a perforated table, the upper end of the perforated table being plugged with a supporting mechanism, an induced draft fan connected to the installation chamber, the outlet end of the induced draft fan being connected to a dehumidification mechanism through a connecting pipe, the upper end of the dehumidification mechanism being connected to a discharge pipe, one end of the discharge pipe extending into the drying chamber and connected to a dispersion pipe, the upper end of the dispersion pipe being provided with a plurality of air holes at equal intervals along the axial direction.

[0006] Preferably, a storage cavity is provided at the bottom end of the box body, a drawer is slidably plugged into the storage cavity, and a mobile vehicle is fixedly connected to the bottom end of the box body.

[0007] Preferably, the supporting mechanism includes a perforated plate, and connecting plates are fixedly connected to the opposite sides of the perforated plate, and the bottom end of each connecting plate is fixedly connected to an insertion rod, and each insertion rod passes through the perforated platform, and each insertion rod is fixedly connected to a limiting block, and each limiting block contacts the upper end of the perforated platform, and the upper end of the perforated plate is connected to a number of limiting seats at equal intervals along the axial direction.

[0008] Preferably, the dehumidification mechanism includes an open box, the open box is fixedly connected to the installation room, a support frame is connected to the open box, the support frame is connected to the connecting pipe and the discharge pipe, and a moisture-absorbing filler layer is provided on the support frame.

[0009] Preferably, the bottom end of the support frame is connected to a material guide pipe, a first movable plate is slidably connected in the material guide pipe, and an electric telescopic rod is connected in the open box to drive the first movable plate to move in the vertical direction.

[0010] Preferably, the material guide tube is connected to a vibration motor.

[0011] Preferably, the upper end of the perforated plate is connected to a limiting mechanism for fixing the glass bottle, and the limiting mechanism includes a first fixing ring, and both sides of the first fixing ring are fixedly connected to fixing plates, and both sides of the upper end of the perforated plate are provided with card slots, and the bottom end of each of the fixing plates is engaged with the card slots, and a plurality of first elastic plug plates are connected to the first fixing ring at equal intervals along the axial direction, and the first fixing ring is connected to the second fixing ring through a first connecting rod, and a second elastic plug plates are connected to the second fixing ring at equal intervals along the axial direction, and the plurality of first elastic plug plates and second elastic plug plates are all inserted into corresponding limiting seats.

[0012] Preferably, the upper end of the partition is connected to a sealing mechanism, and the sealing mechanism includes a circular open frame, the circular open frame is fixedly connected to the upper end of the partition, the connecting shaft passes through the circular open frame, a first groove is provided on the circular open frame, a sealing ring is connected to the first groove, the sealing ring passes through the partition, and the sealing ring is located on the outside of the connecting shaft.

[0013] Preferably, a second groove is provided at the bottom end of the circular open frame, and a plurality of slide grooves are provided at equal intervals along the axial direction at the upper end of the second groove, each of the slide grooves is slidably connected to a second movable plate, one side of each second movable plate is fixedly connected to a second connecting rod, one end of each second connecting rod is fixedly connected to a squeezing ball, each squeezing ball is in extrusion contact with the sealing ring, and the other side of each second movable plate is fixedly connected to a spring, and one end of each spring is fixedly connected to the second groove.

[0014] Preferably, a reinforcing mechanism is connected to the connecting shaft, and the reinforcing mechanism includes a fixed sleeve, which is fixedly connected to the connecting shaft, and fan blades are connected to the fixed sleeve at equal intervals along the axial direction. The upper end of the dispersion pipe is fixedly connected to a fixed cover, and the fixed cover cooperates with the fan blades.

[0015] The present invention proposes a drug packaging material sterilization and drying oven with a heat circulation function, which has the following beneficial effects: 1. The gas in the dispersion tube is released from different pores to recycle the heat. The released gas flows upward, and the pores of the dispersion tube release the dry gas evenly. The airflow penetrates the perforated table, perforated plate and limit seat from bottom to top to form three-dimensional drying, eliminating the drying dead corners on the inner and outer walls of the glass bottle and improving the drying effect of the glass bottle.

[0016] 2. The electric telescopic rod drives the first movable plate to change the contact surface of the hygroscopic filler layer to prevent local saturation, improve moisture absorption efficiency, extend the service life of the hygroscopic filler layer, and ensure a continuous and stable gas drying effect.

[0017] 3. The second movable plate is elastically squeezed by the spring, so that the second movable plate drives the second connecting rod to move. The second connecting rod contacts the sealing ring through the squeezing ball and applies pressure, thereby enhancing the sealing effect of the sealing ring and effectively preventing heat from leaking from the gap between the connecting shaft and the partition.

[0018] 4. When the connecting shaft rotates, the fixed sleeve is driven to rotate, and the fixed sleeve drives the fan blades to rotate synchronously. The gas released from the air holes enters the fixed cover. The fixed cover and the fan blades cooperate to stir the gas, so that the gas forms a swirl state and contacts the glass bottles, thereby significantly improving the drying effect of the glass bottles. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of a drug packaging material sterilization and drying oven with heat circulation function proposed by the present invention; Figure 2 This is a schematic cross-sectional view of a drug packaging material sterilization and drying oven with a heat circulation function proposed by the present invention; Figure 3 This is a schematic diagram of the structure of the connection between the perforated table and the support mechanism in a pharmaceutical packaging material sterilization and drying oven with a heat circulation function proposed by the present invention; Figure 4 This is a structural diagram of the connection between the connecting pipe and the dehumidification mechanism in a pharmaceutical packaging material sterilization and drying oven with a heat circulation function proposed by the present invention; Figure 5 This is a schematic structural diagram of the connection between the support mechanism and the limiting mechanism in a pharmaceutical packaging material sterilization and drying oven with a heat circulation function proposed by the present invention; Figure 6This is a schematic structural diagram of a support mechanism in a pharmaceutical packaging material sterilization and drying oven with a heat circulation function proposed by the present invention; Figure 7 This is a schematic cross-sectional view of the connection between the support mechanism and the limiting mechanism in a pharmaceutical packaging material sterilization and drying oven with a heat circulation function proposed by the present invention; Figure 8 for Figure 7 Schematic diagram of the local enlarged structure at point A above.

[0020] In the figure: 1. Box body; 2. Partition; 3. Drying chamber; 4. Installation chamber; 5. Rotating door; 6. Reducer motor; 7. Connecting shaft; 8. Perforated table; 9. Support mechanism; 10. Induced draft fan; 11. Connecting pipe; 12. Dehumidification mechanism; 13. Discharge pipe; 14. Dispersion pipe; 15. Air hole; 16. Suction pipe; 17. Electric heater; 18. UV germicidal lamp; 19. Storage chamber; 20. Drawer; 21. Mobile vehicle; 22. Limiting mechanism; 23. Sealing mechanism; 24. Reinforcement mechanism; 91. Perforated plate; 92. Connecting plate; 93. Insert rod; 94. Limiting block; 95. Limiting seat; 121. Open box; 122. Support frame ; 123. Hygroscopic filler layer; 124. Vibrating motor; 125. Material guide tube; 126. First movable plate; 127. Electric telescopic rod; 221. First fixed ring; 222. Fixed plate; 223. Card slot; 224. First elastic plug plate; 225. First connecting rod; 226. Second fixed ring; 227. Second elastic plug plate; 231. Ring open frame; 232. First groove; 233. Sealing ring; 234. Second groove; 235. Slide; 236. Second movable plate; 237. Second connecting rod; 238. Squeeze ball; 239. Spring; 241. Fixed sleeve; 242. Fan blade; 243. Fixed cover. DETAILED DESCRIPTION

[0021] 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. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0022] Example 1: Reference Figure 1-4, a medicine packaging material sterilization drying oven with heat circulation function, comprising a box body 1, a partition 2 is connected inside the box body 1, the partition 2 divides the box body 1 into a drying chamber 3 and an installation chamber 4, a rotating door 5 is rotatably connected to the drying chamber 3, the bottom end of the partition 2 is fixedly connected to a reduction motor 6, the output end of the reduction motor 6 is fixedly connected to a connecting shaft 7, one end of the connecting shaft 7 passes through the partition 2 and is fixedly connected to a perforated table 8, the upper end of the perforated table 8 is plugged with a supporting mechanism 9, an induced draft fan 10 is connected to the installation chamber 4, the outlet end of the induced draft fan 10 is connected to a dehumidification mechanism 12 through a connecting pipe 11, the dehumidification mechanism 12 is connected to the installation chamber 4, The upper end of the wet mechanism 12 is connected to a discharge pipe 13, one end of which extends into the drying chamber 3 and is connected to a dispersion pipe 14. The dispersion pipe 14 is located below the perforated table 8, and a plurality of air holes 15 are provided at equal intervals along the axial direction on the upper end of the dispersion pipe 14. The inlet end of the induced draft fan 10 is connected to an intake pipe 16, one end of which extends into the drying chamber 3. The upper end of the drying chamber 3 is connected to an electric heater 17, and the upper end of the drying chamber 3 is fixedly connected to an ultraviolet germicidal lamp 18. A storage cavity 19 is provided at the bottom end of the box body 1, and a drawer 20 is slidably inserted into the storage cavity 19. A mobile vehicle 21 is fixedly connected to the bottom end of the box body 1. Reference Figure 3 The supporting mechanism 9 includes a perforated plate 91, and connecting plates 92 are fixedly connected to opposite sides of the perforated plate 91. The bottom end of each connecting plate 92 is fixedly connected to an insertion rod 93, and each insertion rod 93 passes through the perforated platform 8. Each insertion rod 93 is fixedly connected to a limiting block 94, and each limiting block 94 contacts the upper end of the perforated platform 8. The upper end of the perforated plate 91 is connected to a plurality of limiting seats 95 at equal intervals along the axial direction. Reference Figure 4 The dehumidification mechanism 12 includes an open box 121, which is fixedly connected to the installation room 4. A support frame 122 is connected to the open box 121, and the support frame 122 is connected to the connecting pipe 11 and the discharge pipe 13. A hygroscopic filler layer 123 is provided on the support frame 122. The bottom end of the support frame 122 is connected to a material guide pipe 125, and a first movable plate 126 is slidably connected to the material guide pipe 125. An electric telescopic rod 127 that drives the first movable plate 126 to move in a vertical direction is connected to the open box 121, and a vibration motor 124 is connected to the material guide pipe 125.

[0023] Working process: Place the medical glass bottles into different limiting seats 95, push the rotating door 5 to rotate, open the drying chamber 3, and insert the rod 93 through the perforated platform 8, so that the limiting block 94 limits the insertion rod 93, and the insertion rod 93 supports and limits the perforated plate 91. The perforated plate 91 limits the medical glass bottles through the limiting seat 9, and then push the rotating door 5 to seal the drying chamber 3; After the reduction motor 6 is powered on and started, it drives the connecting shaft 7 to rotate, the connecting shaft 7 drives the perforated table 8 to rotate, the perforated table 8 drives the insertion rod 93 to rotate, the insertion rod 93 drives the connecting plate 92 to rotate, the connecting plate 92 drives the perforated plate 91 to rotate, and the perforated plate 91 drives the glass bottle to rotate through the limit seat 95. The linkage of the limit seat 95, the insertion rod 93 and the perforated plate 91 ensures that the glass bottle maintains a fixed position during the rotation process to avoid collision or deviation. At the same time, the uniform rotation makes the heating uniform and the drying effect better. After the electric heater 17 is powered on, it heats the gas in the drying chamber 3. The heated gas contacts the rotating glass bottles to dry them. After the ultraviolet germicidal lamp 18 is turned on, it sterilizes the glass bottles. The dynamic contact between the heated gas from the electric heater 17 and the rotating glass bottles, combined with the dual functions of the ultraviolet germicidal lamp 18, achieves simultaneous drying and sterilization, improves efficiency and reduces the risk of secondary contamination. At the same time, after the induced draft fan 10 is powered on and started, the hot gas in the drying chamber 3 is sucked through the suction pipe 16, and the absorbed hot gas is introduced into the support frame 122 through the connecting pipe 11, and contacts the hygroscopic filler layer 123 on the support frame 122. The hygroscopic filler layer 123 absorbs moisture and dries the gas. After the gas is dried, it is introduced into the dispersion pipe 14 through the discharge pipe 13, and the gas in the dispersion pipe 14 is released from different air holes 15, and the heat is recycled. The released gas flows upward, and the air holes 15 of the dispersion pipe 14 release the dry gas evenly. The air flow penetrates the perforated table 8, the perforated plate 91 and the limit seat 95 from bottom to top, forming a three-dimensional drying, eliminating the drying dead corners on the inner and outer walls of the glass bottles, and the gas circulates between the suction pipe 16, the induced draft fan 10, the connecting pipe 11, the support frame 122 and the discharge pipe 13, is dehumidified by the hygroscopic filler layer 123 and redistributed back to the drying chamber 3, forming a closed-loop heat cycle, which significantly reduces energy consumption and maintains the temperature in the drying chamber 3 stable. When the hygroscopic filler layer 123 dries the gas, the electric telescopic rod 127 is started to drive the first movable plate 126 to move back and forth in the vertical direction. During the movement of the first movable plate 126, the hygroscopic filler layer 123 is pushed. The electric telescopic rod 127 drives the first movable plate 126 to change the contact surface of the hygroscopic filler layer 123 to prevent local saturation, improve moisture absorption efficiency, extend the service life of the hygroscopic filler layer 123, and ensure that the gas drying effect is continuous and stable.

[0024] Example 2: When the limiting seat 95 drives the glass bottle to rotate, there is a gap between the glass bottle and the limiting seat 95, which causes the glass bottle to easily fly out of the limiting seat 95 during the rotation process. Figure 5As another preferred embodiment of the present invention, the difference from Example 1 is that the upper end of the perforated plate 91 is connected to a limiting mechanism 22 for fixing the glass bottle, and the limiting mechanism 22 includes a first fixing ring 221, and both sides of the first fixing ring 221 are fixedly connected to fixing plates 222. Both sides of the upper end of the perforated plate 91 are provided with a card slot 223, and the bottom end of each fixing plate 222 is engaged with the card slot 223. A plurality of first elastic plug plates 224 are connected to the first fixing ring 221 at equal intervals along the axis direction. The first fixing ring 221 is connected to the second fixing ring 226 through a first connecting rod 225. Second elastic plug plates 227 are connected to the second fixing ring 226 at equal intervals along the axis direction. The plurality of first elastic plug plates 224 and the second elastic plug plates 227 are all inserted into the corresponding limiting seats 95. After the glass bottle is placed in the limiting seat 95, the fixing plate 222 is clamped on the card slot 223 to limit and fix the first fixing ring 221. The first fixing ring 221 is inserted into the limiting seat 95 through the first elastic plug plate 224, thereby squeezing and fixing the glass bottle in the limiting seat 95. At the same time, the first fixing ring 221 is connected to the second fixing ring 226 through the first connecting rod 225, and the second fixing ring 226 is inserted into the limiting seat 95 through the second elastic plug plate 227, exerting a squeezing and fixing effect on the glass bottle, ensuring that when the limiting seat 95 drives the glass bottle to rotate, the glass bottle always remains stable and will not separate from the limiting seat 95.

[0025] Example 3: During the rotation of the connecting shaft 7, there is a gap at the contact point with the partition 2, causing the hot gas in the drying chamber 3 to be released from the gap, resulting in heat waste. Figure 8 As another preferred embodiment of the present invention, the difference from embodiment 2 is that the upper end of the partition 2 is connected to a sealing mechanism 23, and the sealing mechanism 23 includes a circular open frame 231, which is fixedly connected to the upper end of the partition 2, and the connecting shaft 7 passes through the circular open frame 231. The circular open frame 231 is provided with a first groove 232, and the first groove 232 is connected to a sealing ring 233, which passes through the partition 2 and is located on the outside of the connecting shaft 7. The bottom end of the circular open frame 231 is provided with a second groove 234. , a plurality of sliding grooves 235 are formed at equal intervals along the axis direction at the upper end of the second groove 234, and a second movable plate 236 is slidably connected to each sliding groove 235, and a second connecting rod 237 is fixedly connected to one side of each second movable plate 236, and an extrusion ball 238 is fixedly connected to one end of each second connecting rod 237, and each extrusion ball 238 is in extrusion contact with the sealing ring 233, and a spring 239 is fixedly connected to the other side of each second movable plate 236, and one end of each spring 239 is fixedly connected to the second groove 234; The circular open frame 231 fixes the sealing ring 233, and the sealing ring 233 seals the gap between the connecting shaft 7 and the partition 2. At the same time, the spring 239 elastically squeezes the second movable plate 236, so that the second movable plate 236 drives the second connecting rod 237 to move. The second connecting rod 237 contacts the sealing ring 233 through the squeezing ball 238 and applies pressure, thereby enhancing the sealing effect of the sealing ring 233 and effectively preventing heat from leaking from the gap between the connecting shaft 7 and the partition 2.

[0026] Example 4: When the gas released from the air hole 15 dries the glass bottle in the limiting seat 95, the gas moves vertically upward, reducing the drying effect on the glass bottle. Figure 7 As another preferred embodiment of the present invention, the difference from embodiment 1 is that a reinforcing mechanism 24 is connected to the connecting shaft 7. The reinforcing mechanism 24 includes a fixing sleeve 241, which is fixedly connected to the connecting shaft 7. The fixing sleeve 241 is connected to the fan blades 242 at equal intervals along the axis direction. The upper end of the dispersion pipe 14 is fixedly connected to a fixing cover 243, which cooperates with the fan blades 242. When the connecting shaft 7 rotates, it drives the fixed sleeve 241 to rotate, and the fixed sleeve 241 drives the fan blades 242 to rotate synchronously. The gas released from the air hole 15 enters the fixed cover 243. The fixed cover 243 and the fan blades 242 cooperate to stir the gas, so that the gas forms a swirl state and contacts the glass bottle, thereby significantly improving the drying effect of the glass bottle.

[0027] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A medicine packaging material sterilization drying oven with a heat circulation function, comprising a box body (1), wherein a partition (2) is connected to the inside of the box body (1), wherein the partition (2) divides the box body (1) into a drying chamber (3) and an installation chamber (4), and a reduction motor (6) is fixedly connected to the bottom end of the partition (2), characterized in that: in: The output end of the reduction motor (6) is fixedly connected to a connecting shaft (7), one end of the connecting shaft (7) passes through the partition (2) and is fixedly connected to a perforated platform (8), the upper end of the perforated platform (8) is plugged with a supporting mechanism (9), an induced draft fan (10) is connected to the installation chamber (4), the outlet end of the induced draft fan (10) is connected to a dehumidification mechanism (12) through a connecting pipe (11), the upper end of the dehumidification mechanism (12) is connected to a discharge pipe (13), one end of the discharge pipe (13) extends into the drying chamber (3) and is connected to a dispersion pipe (14), the upper end of the dispersion pipe (14) is provided with a plurality of air holes (15) at equal intervals along the axis direction.

2. The pharmaceutical packaging material sterilization and drying oven with heat circulation function according to claim 1, characterized in that: The bottom end of the box body (1) is provided with a storage cavity (19), a drawer (20) is slidably plugged into the storage cavity (19), and the bottom end of the box body (1) is fixedly connected to a moving vehicle (21).

3. The pharmaceutical packaging material sterilization and drying oven with heat circulation function according to claim 1, characterized in that: The support mechanism (9) comprises a perforated plate (91), and connecting plates (92) are fixedly connected to opposite sides of the perforated plate (91), and the bottom end of each connecting plate (92) is fixedly connected to an insertion rod (93), and each insertion rod (93) passes through the perforated platform (8). A limiting block (94) is fixedly connected to each insertion rod (93), and each limiting block (94) contacts the upper end of the perforated platform (8). The upper end of the perforated plate (91) is connected to a plurality of limiting seats (95) at equal intervals along the axis direction.

4. The pharmaceutical packaging material sterilization and drying oven with heat circulation function according to claim 1, characterized in that: The dehumidification mechanism (12) comprises an open box (121), the open box (121) is fixedly connected to the installation room (4), a support frame (122) is connected to the open box (121), the support frame (122) is connected to the connecting pipe (11) and the discharge pipe (13), and a moisture-absorbing filler layer (123) is provided on the support frame (122).

5. The pharmaceutical packaging material sterilization and drying oven with heat circulation function according to claim 4, characterized in that: The bottom end of the support frame (122) is connected to a material guide tube (125), a first movable plate (126) is slidably connected to the material guide tube (125), and an electric telescopic rod (127) is connected to the open box (121) to drive the first movable plate (126) to move in the vertical direction.

6. The pharmaceutical packaging material sterilization and drying oven with heat circulation function according to claim 5, characterized in that: The material guide tube (125) is connected to a vibration motor (124).

7. The pharmaceutical packaging material sterilization and drying oven with heat circulation function according to claim 3, characterized in that: The upper end of the perforated plate (91) is connected to a limiting mechanism (22) for fixing a glass bottle. The limiting mechanism (22) includes a first fixing ring (221). Both sides of the first fixing ring (221) are fixedly connected to fixing plates (222). Both sides of the upper end of the perforated plate (91) are provided with a clamping groove (223). The bottom end of each fixing plate (222) is clamped in the clamping groove (223). The first fixing ring (221) is connected to a second fixing ring (226) at equal intervals along the axis direction. The first fixing ring (221) is connected to a second fixing ring (226) via a first connecting rod (225). The second fixing ring (226) is connected to a second elastic plug plate (227) at equal intervals along the axis direction. The first elastic plug plates (224) and the second elastic plug plates (227) are all inserted into corresponding limiting seats (95).

8. The pharmaceutical packaging material sterilization and drying oven with heat circulation function according to claim 3, characterized in that: The upper end of the partition (2) is connected to a sealing mechanism (23), the sealing mechanism (23) comprising a circular open frame (231), the circular open frame (231) being fixedly connected to the upper end of the partition (2), the connecting shaft (7) passing through the circular open frame (231), the circular open frame (231) being provided with a first groove (232), the first groove (232) being connected to a sealing ring (233), the sealing ring (233) passing through the partition (2), and the sealing ring (233) being located on the outside of the connecting shaft (7).

9. The pharmaceutical packaging material sterilization and drying oven with heat circulation function according to claim 8, characterized in that: A second groove (234) is provided at the bottom end of the circular open frame (231), and a plurality of slide grooves (235) are provided at equal intervals along the axis direction at the upper end of the second groove (234), and each of the slide grooves (235) is slidably connected to a second movable plate (236), and one side of each second movable plate (236) is fixedly connected to a second connecting rod (237), and one end of each second connecting rod (237) is fixedly connected to an extrusion ball (238), and each extrusion ball (238) is in extrusion contact with the sealing ring (233), and the other side of each second movable plate (236) is fixedly connected to a spring (239), and one end of each spring (239) is fixedly connected to the second groove (234).

10. The pharmaceutical packaging material sterilization and drying oven with heat circulation function according to claim 1, characterized in that: The connecting shaft (7) is connected to a reinforcing mechanism (24), the reinforcing mechanism (24) comprising a fixing sleeve (241), the fixing sleeve (241) being fixedly connected to the connecting shaft (7), the fixing sleeve (241) being connected to fan blades (242) at equal intervals along the axis direction, the upper end of the dispersion pipe (14) being fixedly connected to a fixing cover (243), the fixing cover (243) being matched with the fan blades (242).

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