A spray drier for drying traditional Chinese medicines

Abstract

The application provides a traditional Chinese medicine drying spray dryer, and relates to the technical field of traditional Chinese medicine extract preparation. The traditional Chinese medicine drying spray dryer comprises a drying cylinder, two connecting channels are fixedly installed on the outer wall of the drying cylinder, each connecting channel is communicated with the drying cylinder, an extension channel is arranged between the two connecting channels, the extension channel comprises an extension pipe, two ends of the extension pipe are fixedly connected with connecting hoses, the ends of the connecting hoses are fixedly connected with fixed pipes, and the fixed pipes are communicated with each other. In the circulating working mode, the circulating fan drives the air in the extension pipe to flow, so that negative pressure is generated at the bottom of the extension pipe. The air in the drying cylinder and the medicine liquid for sufficient drying enter the extension pipe through the fixed pipes at the bottom, so that the hot air and the medicine liquid are driven to circulate and flow, the flow path of the medicine liquid and the hot air is improved, the drying time of the medicine liquid is prolonged, and the phenomenon of incomplete drying when the equipment is initially started is avoided.

Description

Technical Field

[0001] This invention relates to the field of traditional Chinese medicine extract preparation technology, specifically a spray dryer for drying traditional Chinese medicine. Background Technology

[0002] Traditional Chinese medicine (TCM) extraction utilizes techniques to maximize the extraction of its active ingredients, thereby improving the intrinsic quality and clinical efficacy of TCM preparations and maximizing the therapeutic effect of TCM. Extracting the active ingredients from TCM and further separating and purifying them to obtain effective monomers is an important aspect of TCM research.

[0003] A search revealed that a spray dryer for drying traditional Chinese medicine, with publication number CN208436412U, includes a drying tower, a receiving cone, a cyclone separator, a waste gas tower, a feed pump, and a heater. The drying tower has a hot air distributor at its top. The receiving cone is fixed to the bottom of the drying tower, and a connecting pipe is attached to the outer wall of the receiving cone. The cyclone separator is connected to the other end of the connecting pipe, and a separator receiving hopper is fixed to the bottom of the cyclone separator. A cooling pipe is installed between the receiving cone and the separator receiving hopper. A fan for the receiving system is connected to the outside of the receiving cone, directly blowing air into the pipe at the bottom of the drying tower. This purifies the pipe, reduces material accumulation in the pipe gaps, and cools the material, making it finer, less prone to clumping, easier to maintain, and reduces mixing between materials adhering to the material during multiple drying processes, thus improving the quality of material drying.

[0004] In the above technical solution, air is heated by a heater to dry the Chinese medicine extract in the drying tower. However, when the heater is initially started, the heating efficiency is limited, resulting in a low temperature inside the drying tower. This can easily lead to incomplete drying of the medicine in the drying tower. In addition, during the operation, the inner wall of the drying tower is prone to material adhesion. Therefore, we propose a spray dryer for drying Chinese medicine. Summary of the Invention

[0005] Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this invention provides a spray dryer for drying traditional Chinese medicine. It solves the technical problem that when air is heated by a heater to dry the extract of traditional Chinese medicine in a drying tower, the heating efficiency is limited at the initial start-up of the heater, resulting in a low temperature inside the drying tower. This can easily lead to incomplete drying of the extract in the drying tower, and the material can easily adhere to the inner wall of the drying tower during operation.

[0007] Technical solution

[0008] To achieve the above objectives, the present invention provides the following technical solution: a spray dryer for drying traditional Chinese medicine, comprising a drying cylinder, two connecting channels fixedly installed on the outer wall of the drying cylinder, each connecting channel communicating with the drying cylinder, an extension channel provided between the two connecting channels, the extension channel comprising an extension pipe, both ends of the extension pipe being fixedly connected to and connected to connecting hoses, the ends of the connecting hoses being fixedly installed and connected to fixed pipes, the two fixed pipes being respectively fixedly connected to and communicating with the two connecting channels, and a circulating fan installed inside the extension pipe;

[0009] Two circular supports are rotatably mounted inside the drying cylinder. Each circular support has a sealing element installed on its outer wall to seal the opening of the connection channel. The two circular supports are respectively located at both ends inside the drying cylinder. Several connecting rods are arranged between the two circular supports. The two ends of each connecting rod are fixedly connected to the two circular supports. Each connecting rod has a scraper fixedly installed on its side surface near the drying cylinder, which contacts the inner wall of the drying cylinder. The circular support located at the bottom of the drying cylinder is connected to a drive structure for driving its rotation.

[0010] An atomizing sprayer is installed on the outside of the drying cylinder.

[0011] Preferably, the lower end of the drying cylinder is configured as an inverted conical end, and the driving structure includes a driving ring, which is rotatably mounted on the inner bottom of the conical end. A driving shaft is fixedly connected inside the driving ring via a connecting rod. The lower end of the driving shaft extends rotatably to the lower side of the conical end, and a driving motor is fixedly mounted on the lower end of the conical end. The output end of the driving motor is fixedly connected to the lower end of the driving shaft.

[0012] Preferably, a plurality of connecting side rods are fixedly installed on the drive rotating ring, the upper end of each connecting side rod is fixedly connected to a circular bracket, the side wall of the connecting side rod is movably connected to the inner wall of the conical end, and the bottom of the conical end is provided with a discharge component for auxiliary discharge.

[0013] Preferably, the discharge assembly includes a discharge channel, which is fixedly installed at the lower end of the conical end. The discharge channel has a notch that communicates with the interior of the lower end of the conical end. A drive shaft is rotatably installed inside the discharge channel. An auger structure is fixedly sleeved on the outer wall of the drive shaft. One end of the auger structure extends to the opening of the discharge channel, and the other end of the auger structure extends to the notch.

[0014] Preferably, one end of the drive shaft extends movably to the side of the discharge channel near the drive shaft, a driven gear is fixedly installed at one end of the drive shaft, a driving gear is meshed with one side of the driven gear, and the driving gear is fixedly installed on the outer wall of the drive shaft.

[0015] Preferably, the extension tube is movably sleeved with several movable collars, and several support springs are fixedly installed on the inner wall of each movable collar. The end of each support spring is fixed to the outer wall of the extension tube. Several movable collars are fixedly installed inside the fixed bracket, and a vibration motor is fixedly installed on the outer wall of the extension tube.

[0016] Preferably, an exhaust pipe is fixedly installed on the outer wall of one of the fixed pipes, the exhaust pipe is arranged facing upwards, the interior of the exhaust pipe is connected to the interior of the fixed pipe, and a particulate filter screen for filtering air is fixedly installed inside the exhaust pipe.

[0017] Preferably, an exhaust port is fixedly installed on the upper side of the outer wall of the drying cylinder, and the end of the exhaust port away from the drying cylinder is inclined upward. An electrically controlled valve is installed inside the exhaust port, and a heating and drying assembly is connected to the lower end of the drying cylinder.

[0018] Preferably, the heating and drying assembly includes a heating box installed on one side of the drying cylinder. An electric heater is installed inside the heating box. An air inlet pipe is fixedly installed on and connected to the outer wall of the heating box. The end of the air inlet pipe is fixedly installed on the lower outer wall of the drying cylinder. The interior of the air inlet pipe is connected to the interior of the drying cylinder. A booster fan connected to the heating box is installed on the top of the heating box.

[0019] Preferably, the atomizing sprayer includes a raw material storage tank, which is installed on one side of the heating box. An inlet pipe is provided outside the raw material storage tank. One end of the inlet pipe extends into the raw material storage tank and is connected to a delivery pump installed inside the raw material storage tank. The other end of the inlet pipe is fixedly installed and connected to a liquid atomizing nozzle, which is fixedly installed inside the drying cylinder.

[0020] This invention provides a spray dryer for drying traditional Chinese medicine. It has the following beneficial effects:

[0021] When the circular support rotates, the seal can be rotated to the opening of the connecting channel to seal the connecting channel, thereby sealing both ends of the extension tube. When the temperature inside the drying cylinder reaches the standard, it can switch to single-cylinder working mode. In single-cylinder working mode, the movement path of air and Chinese medicine liquid can be shortened, improving the drying efficiency of the equipment for atomized Chinese medicine liquid.

[0022] When the circular support rotates, it can drive the seal to move away from the opening of the connection channel, and can switch to the cyclic working mode when the temperature inside the drying cylinder is not up to standard and the drying efficiency is low when the equipment is started.

[0023] In the circulating working mode, the circulating fan drives the air inside the extension tube to flow, creating a negative pressure at the bottom of the extension tube. This negative pressure forces the air inside the drying cylinder and the undried liquid medicine to enter the extension tube through the fixed pipe at the bottom, thereby driving the hot air and liquid medicine to circulate. This increases the flow path of the liquid medicine and hot air, extends the drying time of the liquid medicine, and avoids the phenomenon of incomplete drying when the equipment is initially started.

[0024] When the circular support rotates, it drives the connecting rods fixedly installed on the two circular supports to move along the inner wall of the drying cylinder, so that the scraper fixedly installed on the connecting rods moves synchronously, which can scrape off the material on the inner wall of the drying cylinder and prevent the material from adhering to the inner wall of the drying cylinder. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 This is a top view of the drying cylinder of the present invention;

[0027] Figure 3 for Figure 2 A schematic diagram of the cross-sectional structure at point A_A;

[0028] Figure 4 for Figure 3 Enlarged structural diagram at point B;

[0029] Figure 5 for Figure 3 Enlarged structural diagram at point C;

[0030] Figure 6 This is a top view of the extension tube of the present invention;

[0031] Figure 7 for Figure 6 A structural schematic diagram of the cross-section at point DD;

[0032] Figure 8 This is a schematic diagram of the overall structure of the conical end of the present invention;

[0033] Figure 9 This is a side view of the conical end of the present invention.

[0034] Figure 10 This is a schematic diagram of the overall side view of the present invention;

[0035] Figure 11 This is a top view of the conical end of the present invention.

[0036] The components are as follows: 1. Drying cylinder; 11. Circular support; 111. Sealing element; 12. Connecting rod; 13. Conical end; 14. Drive shaft; 15. Drive ring; 16. Connecting side rod; 17. Drive motor; 18. Drive structure; 2. Connecting channel; 3. Extension channel; 31. Extension pipe; 32. Circulating fan; 33. Connecting hose; 34. Fixed pipe; 35. Movable collar; 36. Support spring; 37. Fixed support; 38. 39. Vibration motor; 310. Exhaust pipe; 4. Particle filter; 5. Exhaust port; 6. Electrically controlled valve; 7. Heating and drying assembly; 8. Heating box; 9. Air inlet pipe; 10. Booster fan; 11. Atomizing sprayer; 12. Raw material storage box; 23. Feed pipe; 34. Liquid atomizing nozzle; 55. Discharge assembly; 66. Discharge channel; 77. Drive shaft; 88. Screw structure; 99. Drive gear; 10. Driven gear. Detailed Implementation

[0037] 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.

[0038] Example 1:

[0039] like Figures 1-10 As shown, this embodiment of the invention provides a spray dryer for drying traditional Chinese medicine, including a drying cylinder 1. Two connecting channels 2 are fixedly installed on the outer wall of the drying cylinder 1, and each connecting channel 2 is connected to the drying cylinder 1. An extension channel 3 is provided between the two connecting channels 2. The extension channel 3 includes an extension pipe 31. Both ends of the extension pipe 31 are fixed and connected to connecting hoses 33. The ends of the connecting hoses 33 are fixedly installed and connected to fixed pipes 34. The two fixed pipes 34 are respectively fixedly connected to and connected to the two connecting channels 2. A circulating fan 32 is installed inside the extension pipe 31.

[0040] Two circular supports 11 are rotatably installed inside the drying cylinder 1. Each circular support 11 has a sealing element 111 installed on its outer wall to seal the opening of the connecting channel 2. When the circular support 11 rotates, the sealing element 111 can rotate to the opening of the connecting channel 2 to seal the connecting channel 2, thereby sealing both ends of the extension tube 31. When the temperature inside the drying cylinder 1 reaches a certain value, it can switch to single-cylinder working mode. In single-cylinder working mode, the movement path of air and Chinese medicine liquid can be shortened, improving the drying efficiency of the equipment for atomized Chinese medicine liquid.

[0041] When the circular support 11 rotates, it can drive the seal 111 to move away from the opening of the connecting channel 2, and can switch to the cyclic working mode when the temperature inside the drying cylinder 1 is not up to standard and the drying efficiency is low when the equipment is started.

[0042] In the circulating working mode, the circulating fan 32 drives the air inside the extension pipe 31 to flow, creating a negative pressure at the bottom of the extension pipe 31. This negative pressure forces the air inside the drying cylinder 1 and the undried liquid medicine to enter the extension pipe 31 through the fixed pipe 34 at the bottom, thus driving the hot air and liquid medicine to circulate. This increases the flow path of the liquid medicine and hot air, extends the drying time, and prevents incomplete drying during initial equipment startup. Two circular supports 11 are respectively installed at both ends inside the drying cylinder 1, and several connecting rods 12 are installed between the two circular supports 11. The two ends of the connecting rod 12 are fixedly connected to two circular brackets 11 respectively. Each connecting rod 12 has a scraper fixedly installed on the side surface near the drying cylinder 1 that contacts the inner wall of the drying cylinder 1. The circular bracket 11 at the bottom of the drying cylinder 1 is connected to a drive structure 18 for driving its rotation. When the circular bracket 11 rotates, it can drive the connecting rod 12 fixedly installed on the two circular brackets 11 to move along the inner wall of the drying cylinder 1, so that the scraper fixedly installed on the connecting rod 12 moves synchronously, which can scrape off the material on the inner wall of the drying cylinder 1 and prevent the material from adhering to the inner wall of the drying cylinder 1.

[0043] An atomizing sprayer 6 is installed on the outside of the drying cylinder 1.

[0044] In this embodiment, the lower end of the drying cylinder 1 is set as an inverted conical end 13, which facilitates the collection of raw materials inside the drying cylinder 1. The drive structure 18 includes a drive ring 15, which is rotatably mounted on the inner bottom of the conical end 13. A drive shaft 14 is fixedly connected inside the drive ring 15 via a connecting rod. The lower end of the drive shaft 14 extends rotatably to the lower side of the conical end 13. A drive motor 17 is fixedly mounted on the lower end of the conical end 13. The output end of the drive motor 17 is fixedly connected to the lower end of the drive shaft 14. Several connecting side rods 16 are fixedly mounted on the drive ring 15. The upper end of each connecting side rod 16 is connected to the circular bracket 11. The connecting side rod 16 is fixedly connected to the inner wall of the conical end 13. The bottom of the conical end 13 is provided with a discharge assembly 7 for auxiliary discharge. During operation, the drive motor 17 drives the drive shaft 14 to rotate, thereby driving the drive ring 15 to move several connecting side rods 16. This allows the connecting side rods 16 to drive the circular bracket 11 to rotate. When the connecting side rods 16 move, they can drive the material accumulated inside the conical end 13 to move, so that the material gradually moves to the bottom of the conical end 13. At the same time, the drive ring 15 drives the connecting rod to move, thereby driving the material to enter the discharge channel 71 through the notch, assisting in discharge.

[0045] In this embodiment, the discharge assembly 7 includes a discharge channel 71, which is fixedly installed at the lower end of the conical end 13. The discharge channel 71 has a notch that communicates with the interior of the lower end of the conical end 13. A drive shaft 72 is rotatably installed inside the discharge channel 71. An auger structure 73 is fixedly sleeved on the outer wall of the drive shaft 72. One end of the auger structure 73 extends to the opening of the discharge channel 71, and the other end extends to the notch. One end of the drive shaft 72 extends movably to the side of the discharge channel 71 near the drive shaft 14. A driven gear 75 is fixedly installed on one end of the drive shaft 72. A drive gear 74 is meshed with one side of the driven gear 75. The drive gear 74 is fixedly installed on the outer wall of the drive shaft 14. During discharge, the drive shaft 72 can drive the drive gear 74 to move, thereby driving the driven gear 75 meshed with on one side to rotate the drive shaft 72 and the auger structure 73, so that the auger structure 73 rotates and drives the material to be discharged through the discharge channel 71.

[0046] In this embodiment, a plurality of movable collars 35 are movably sleeved on the outside of the extension tube 31. A plurality of support springs 36 are fixedly installed on the inner wall of each movable collar 35. The end of each support spring 36 is fixed to the outer wall of the extension tube 31. The plurality of movable collars 35 are fixedly installed inside the fixed bracket 37. A vibration motor 38 is fixedly installed on the outer wall of the extension tube 31. During operation, the vibration motor 38 can drive the extension tube 31 to vibrate inside the plurality of support springs 36. The vibration of the extension tube 31 can prevent material from adhering to the inner wall of the extension tube 31 and can drive the material inside the extension tube 31 to gradually move and discharge, avoiding material accumulation and improving the discharge efficiency of the equipment.

[0047] In this embodiment, an exhaust pipe 39 is fixedly installed on the outer wall of one of the fixed pipes 34. The exhaust pipe 39 is set upwards and communicates with the interior of the fixed pipe 34. A particulate filter 310 for filtering air is fixedly installed inside the exhaust pipe 39. An exhaust port 4 is fixedly installed on the upper side of the outer wall of the drying cylinder 1. The end of the exhaust port 4 away from the drying cylinder 1 is inclined upwards. An electrically controlled valve 41 is installed inside the exhaust port 4. The electrically controlled valve 41 is used to switch the internal communication state of the exhaust port 4, thereby adjusting the exhaust position of the equipment according to the usage mode of the equipment. In the circulation mode, the electrically controlled valve 41 closes the exhaust port 4, and exhaust is carried out through the exhaust pipe 39, thereby extending the air flow path and increasing the drying time. A heating and drying assembly 5 is connected to the lower end of the drying cylinder 1.

[0048] In this embodiment, the heating and drying assembly 5 includes a heating box 51, which is installed on one side of the drying cylinder 1. An electric heater is installed inside the heating box 51. An air inlet pipe 52 is fixedly installed on and connected to the outer wall of the heating box 51. The end of the air inlet pipe 52 is fixedly installed on the lower outer wall of the drying cylinder 1. The interior of the air inlet pipe 52 is connected to the interior of the drying cylinder 1. A booster fan 53 connected to the heating box 51 is installed on the top of the heating box 51. During drying, the air inside the heating box 51 is heated by the electric heater installed inside the heating box 51. The booster fan 53 drives the air inside the heating box 51 to flow, thereby delivering it to the air inlet pipe 52 and the interior of the drying cylinder 1 for drying.

[0049] In this embodiment, the atomizing sprayer 6 includes a raw material storage tank 61, which is installed on one side of the heating box 51. A feed pipe 62 is provided outside the raw material storage tank 61. One end of the feed pipe 62 extends into the raw material storage tank 61 and is connected to a delivery pump installed inside the raw material storage tank 61. The other end of the feed pipe 62 is fixedly installed and connected to a liquid atomizing nozzle 63. The liquid atomizing nozzle 63 is fixedly installed inside the drying cylinder 1. During operation, the traditional Chinese medicine liquid inside the raw material storage tank 61 can be pumped into the feed pipe 62 by the delivery pump inside the raw material storage tank 61, and then atomized by the atomizing sprayer 6 and sprayed into the drying cylinder 1 for drying.

[0050] Working principle:

[0051] When the circular support 11 rotates, the sealing element 111 can be rotated to the opening of the connecting channel 2 to seal the connecting channel 2, thereby sealing both ends of the extension tube 31. When the temperature inside the drying cylinder 1 reaches the standard, it can switch to single-cylinder working mode. In single-cylinder working mode, the movement path of air and Chinese medicine liquid can be shortened, and the drying efficiency of the equipment for atomized Chinese medicine liquid can be improved.

[0052] When the circular support 11 rotates, it can drive the seal 111 to move away from the opening of the connecting channel 2, and can switch to the cyclic working mode when the temperature inside the drying cylinder 1 is not up to standard and the drying efficiency is low when the equipment is started.

[0053] In the circulating working mode, the circulating fan 32 drives the air inside the extension tube 31 to flow, which generates a negative pressure at the bottom of the extension tube 31. The negative pressure causes the air inside the drying cylinder 1 and the undried liquid medicine to enter the extension tube 31 through the fixed tube 34 at the bottom, thereby driving the hot air and liquid medicine to circulate. This increases the flow path of the liquid medicine and hot air, increases the drying time of the liquid medicine, and avoids the phenomenon of incomplete drying when the equipment is initially started.

[0054] When the circular support 11 rotates, it can drive the connecting rod 12, which is fixedly installed on the two circular supports 11, to move along the inner wall of the drying cylinder 1. This causes the scraper fixedly installed on the connecting rod 12 to move synchronously, which can scrape off the material on the inner wall of the drying cylinder 1 and prevent the material from adhering to the inner wall of the drying cylinder 1.

[0055] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. For those skilled in the art, other variations or modifications can be made based on the above description. It is impossible to exhaustively list all the implementation methods here. All obvious variations or modifications derived from the technical solutions of the present invention are still within the protection scope of the present invention.

Claims

1. A spray dryer for drying traditional Chinese medicine, comprising a drying cylinder (1), characterized in that: Two connecting channels (2) are fixedly installed on the outer wall of the drying cylinder (1). Each connecting channel (2) is connected to the drying cylinder (1). An extension channel (3) is provided between the two connecting channels (2). The extension channel (3) includes an extension pipe (31). Both ends of the extension pipe (31) are fixed and connected to a connecting hose (33). The ends of the connecting hose (33) are fixedly installed and connected to a fixing pipe (34). The two fixing pipes (34) are fixedly connected to and connected to the two connecting channels (2). A circulating fan (32) is installed inside the extension pipe (31). The drying cylinder (1) has two circular supports (11) rotatably mounted inside. Each circular support (11) has a sealing element (111) installed on its outer wall for sealing the opening of the connecting channel (2). The two circular supports (11) are respectively located at both ends inside the drying cylinder (1). A number of connecting rods (12) are arranged between the two circular supports (11). The two ends of each connecting rod (12) are fixedly connected to the two circular supports (11). Each connecting rod (12) has a scraper fixedly installed on its side surface near the drying cylinder (1) that contacts the inner wall of the drying cylinder (1). The circular support (11) located at the bottom of the drying cylinder (1) is connected to a drive structure (18) for driving its rotation. An atomizing sprayer (6) is installed on the outside of the drying cylinder (1).

2. The spray dryer for drying traditional Chinese medicine according to claim 1, characterized in that: The lower end of the drying cylinder (1) is set as an inverted conical end (13). The driving structure (18) includes a driving ring (15). The driving ring (15) is rotatably installed at the inner bottom of the conical end (13). The driving ring (15) is fixedly connected to a driving shaft (14) through a connecting rod. The lower end of the driving shaft (14) extends rotatably to the lower side of the conical end (13). A driving motor (17) is fixedly installed at the lower end of the conical end (13). The output end of the driving motor (17) is fixedly connected to the lower end of the driving shaft (14).

3. A spray dryer for drying traditional Chinese medicine according to claim 2, characterized in that: A number of connecting side rods (16) are fixedly installed on the drive rotating ring (15). The upper end of each connecting side rod (16) is fixedly connected to the circular bracket (11). The side wall of the connecting side rod (16) is movably connected to the inner wall of the conical end (13). The bottom of the conical end (13) is provided with a discharge assembly (7) for auxiliary discharge.

4. A spray dryer for drying traditional Chinese medicine according to claim 3, characterized in that: The discharge assembly (7) includes a discharge channel (71), which is fixedly installed at the lower end of the conical end (13). The discharge channel (71) is provided with a notch that communicates with the interior of the lower end of the conical end (13). A drive shaft (72) is rotatably installed inside the discharge channel (71). An auger structure (73) is fixedly sleeved on the outer wall of the drive shaft (72). One end of the auger structure (73) extends to the opening of the discharge channel (71), and the other end of the auger structure (73) extends to the notch.

5. A spray dryer for drying traditional Chinese medicine according to claim 4, characterized in that: One end of the drive shaft (72) extends movably to the side of the discharge channel (71) near the drive shaft (14). A driven gear (75) is fixedly installed at one end of the drive shaft (72). A driving gear (74) is meshed with one side of the driven gear (75). The driving gear (74) is fixedly installed on the outer wall of the drive shaft (14).

6. A spray dryer for drying traditional Chinese medicine according to claim 1, characterized in that: The extension tube (31) is movably sleeved with several movable collars (35). Several support springs (36) are fixedly installed on the inner wall of each movable collar (35). The end of each support spring (36) is fixed on the outer wall of the extension tube (31). Several movable collars (35) are fixedly installed inside the fixed bracket (37). A vibration motor (38) is fixedly installed on the outer wall of the extension tube (31).

7. A spray dryer for drying traditional Chinese medicine according to claim 6, characterized in that: An exhaust pipe (39) is fixedly installed on the outer wall of one of the fixed pipes (34). The exhaust pipe (39) is arranged facing upwards. The interior of the exhaust pipe (39) is connected to the interior of the fixed pipe (34). A particulate filter (310) for filtering air is fixedly installed inside the exhaust pipe (39).

8. A spray dryer for drying traditional Chinese medicine according to claim 1, characterized in that: An exhaust port (4) is fixedly installed on the upper side of the outer wall of the drying cylinder (1). The end of the exhaust port (4) away from the drying cylinder (1) is inclined upward. An electric control valve (41) is installed inside the exhaust port (4). A heating and drying assembly (5) is connected to the lower end of the drying cylinder (1).

9. A spray dryer for drying traditional Chinese medicine according to claim 8, characterized in that: The heating and drying assembly (5) includes a heating box (51), which is installed on one side of the drying cylinder (1). An electric heater is installed inside the heating box (51). An air inlet pipe (52) is fixedly installed and connected to the outer wall of the heating box (51). The end of the air inlet pipe (52) is fixedly installed on the lower outer wall of the drying cylinder (1). The interior of the air inlet pipe (52) is connected to the interior of the drying cylinder (1). A booster fan (53) connected to the heating box (51) is installed on the top of the heating box (51).

10. A spray dryer for drying traditional Chinese medicine according to claim 8, characterized in that: The atomizing sprayer (6) includes a raw material storage tank (61), which is installed on one side of the heating box (51). A feed pipe (62) is provided outside the raw material storage tank (61). One end of the feed pipe (62) extends into the raw material storage tank (61) and is connected to a delivery pump installed inside the raw material storage tank (61). The other end of the feed pipe (62) is fixedly installed and connected to a liquid atomizing nozzle (63), which is fixedly installed inside the drying cylinder (1).

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