A dryer for the production of granular drugs

Abstract

This invention relates to a dryer for the production of granular drugs, comprising a horizontal shell with a horizontal drying screen rotatably connected inside. A feed pipe is located at the center of one side of the drying screen, and a connecting pipe is located at the center of the other side. Support frames are provided on the inner walls of both sides of the shell, and the feed pipe and connecting pipe are rotatably connected to these support frames. A feeding mechanism corresponding to the feed pipe is located on one side of the shell. A discharge port is located at the center of the bottom of the shell, and a discharge pipe corresponding to the discharge port is located at the center of the bottom of the drying screen. A groove corresponding to the rotation trajectory of the discharge pipe is provided on the inner wall of the shell, allowing the discharge pipe to slide circumferentially along the groove. A sealing plate is sealed on the inner wall of the connecting pipe, and a stirring shaft inserted into the drying screen is rotatably connected to the center of the sealing plate. The stirring shaft has a scraper that contacts the inner wall of the drying screen and several sets of stirring blades. This invention achieves uniform agitation of the material and uniform distribution of hot air during the drying process, improving drying efficiency and uniformity, simplifying the discharge process, and is convenient to use.

Description

Technical Field

[0001] This utility model relates to the field of drying equipment technology, and in particular to a dryer for the production of granular drugs. Background Technology

[0002] In the pharmaceutical industry, the drying of granular drugs is a crucial step, directly affecting the quality and stability of the drugs. For example, Chinese utility model patent CN218884615U discloses a granular drug drying device. In use, granules are placed into a storage tank through the inlet, then the valve and door are closed. Colorless silica gel desiccant is then poured into the outer shell through the inlet. A heater then blows hot air into the outlet pipe, which in turn blows it onto the granules in the storage tank inside the outer shell through the outlet. A motor drives a rotating shaft, which in turn rotates a main wheel. The main wheel, via a transmission belt, drives a secondary wheel, which in turn rotates a support rod. The rotation of the support rod and the rotating shaft, in turn, rotates the storage tank and a stirring rod. This allows the hot air from the outlet to be blown onto the granules through the openings outside the storage tank, while the rotating stirring rod agitates the colorless silica gel desiccant in the outer shell, ensuring the dryness of the outer shell and improving the drying effect on the granules in the storage tank. In this solution, the feeding and unloading of granules is cumbersome, affecting work efficiency. At the same time, the storage box itself cannot rotate, and the material near the shaft and support rod cannot fully contact the hot air, resulting in uneven drying. Summary of the Invention

[0003] The present invention aims to address the shortcomings of the prior art by providing a dryer for the production of granular drugs.

[0004] To achieve the above objectives, this utility model adopts the following technical solution: A dryer for granular drug production includes a horizontal shell, a horizontal drying screen cylinder rotatably connected inside the shell, a feed pipe at the center of one side of the drying screen cylinder, a connecting pipe at the center of the other side, support frames on the inner walls of both sides of the shell, the feed pipe and the connecting pipe being rotatably connected to the support frames, a feeding mechanism corresponding to the feed pipe on one side of the shell, a discharge port at the center of the bottom of the shell, a discharge pipe corresponding to the discharge port at the center of the bottom of the drying screen cylinder, a groove corresponding to the rotation trajectory of the discharge pipe on the inner wall of the shell, the discharge pipe sliding along the circumference of the groove, a sealing plate sealing the inner wall of the connecting pipe, a stirring shaft rotatably connected to the center of the sealing plate and passing through the drying screen cylinder, a scraper and several sets of stirring blades on the stirring shaft contacting the inner wall of the drying screen cylinder, a power mechanism driving the drying screen cylinder and the stirring shaft to rotate in different directions on the shell, an air intake mechanism on one side of the shell, and an exhaust mechanism on the other side.

[0005] Specifically, the feeding mechanism includes a feeding hopper and a guide pipe. The inlet of the guide pipe is connected to the bottom of the feeding hopper, and the outlet passes through the housing and is rotatably connected to the feeding pipe.

[0006] Specifically, the discharge pipe is equipped with sliders on both sides, which are slidably connected to the inner wall of the chute, and the discharge pipe outlet is equipped with an inwardly contracting guide port.

[0007] Specifically, the power mechanism includes a protective cover located on the side of the housing near the connecting pipe. The connecting pipe passes through the protective cover and is equipped with a rotating disk. The rotating disk is equipped with an internal gear ring. The stirring shaft passes through the protective cover and is equipped with a first gear. A reduction motor is located on the outside of the protective cover. The output shaft of the reduction motor passes through the protective cover and is equipped with a second gear that meshes with the internal gear ring and a third gear that meshes with the first gear.

[0008] Specifically, the air intake mechanism includes air guide pipes installed on both sides of the inner wall of one side of the housing, with several air outlets on the air guide pipes facing the drying screen cylinder, and an air intake pipe connected to the air guide pipes on the housing, with the air intake pipes connected to a hot air circulation unit.

[0009] Specifically, the exhaust mechanism includes air collection hoods on both sides of the inner wall of the housing, and an exhaust pipe connected to the air collection hood on the housing. The exhaust pipe is connected to the dust collector and the hot air circulation unit in sequence.

[0010] The beneficial effects of this utility model are as follows: By setting up a drying mesh cylinder and a stirring shaft that rotate in opposite directions, this utility model realizes continuous tumbling of materials during the drying process, increases the contact area between the materials and hot air, and improves drying efficiency and uniformity; by setting up a feeding mechanism, a discharge pipe, a chute, and a discharge port, the material feeding and unloading operations are simple and the working efficiency is high; by setting up an air intake mechanism and an exhaust mechanism, the uniform distribution and recycling of hot air are realized, improving the utilization rate of hot air and reducing energy consumption. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model;

[0012] Figure 2 This is a schematic diagram of the drying mesh cylinder structure of this utility model;

[0013] Figure 3 This is a schematic diagram showing the positions of the internal gear ring, the first gear, and the third gear of this utility model;

[0014] Figure 4 This is a schematic diagram showing the positions of the air intake and exhaust mechanisms of this utility model;

[0015] In the diagram: 1-Shell; 2-Drying mesh cylinder; 3-Feed pipe; 4-Connecting pipe; 5-Support frame; 6-Discharge pipe; 7-Slide groove; 8-Sealing plate; 9-Stirring shaft; 10-Scraper; 11-Stirring blade; 12-Feed hopper; 13-Guide pipe; 14-Slider; 15-Guide port; 16-Protective cover; 17-Rotating disc; 18-Internal gear ring; 19-First gear; 20-Reduction motor; 21-Second gear; 22-Third gear; 23-Air guide pipe; 24-Air blowing port; 25-Air inlet pipe; 26-Air collection hood; 27-Exhaust pipe; 28-Discharge port;

[0016] The following will describe in detail the embodiments of this utility model with reference to the accompanying drawings. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0018] like Figures 1-4 As shown, a dryer for producing granular drugs includes a horizontal shell 1, with a horizontal drying mesh cylinder 2 rotatably connected inside the shell 1. A feed pipe 3 is located at the center of one side of the drying mesh cylinder 2, and a connecting pipe 4 is located at the center of the other side. Support frames 5 are provided on the inner walls of both sides of the shell 1. The feed pipe 3 and the connecting pipe 4 are rotatably connected to the support frames 5. A feeding mechanism corresponding to the feed pipe 3 is provided on one side of the shell 1. The feeding mechanism includes a feed hopper 12 and a guide pipe 13, with the inlet of the guide pipe 13 connected to the bottom of the feed hopper 12. The outlet is inserted into the housing 1 and rotatably connected to the feed pipe 3. A discharge port 28 is located at the center of the bottom of the housing 1. A discharge pipe 6, corresponding to the discharge port 28, is located at the center of the bottom of the drying mesh cylinder 2. Valves are installed on the guide pipe 13 and the discharge pipe 6. A groove 7, corresponding to the rotation trajectory of the discharge pipe 6, is provided on the inner wall of the housing 1. The discharge pipe 6 slides along the circumference of the groove 7. Slider blocks 14 are located on both sides of the discharge pipe 6, and the sliders 14 are slidably connected to the inner wall of the groove 7. An inwardly contracting guide port 15 is provided at the outlet of the discharge pipe 6. This achieves automatic material discharge under gravity, simplifies the discharge process, and is convenient to use.

[0019] The inner wall of the connecting pipe 4 is sealed with a sealing plate 8. The center of the sealing plate 8 is rotatably connected to a stirring shaft 9 that passes through the drying mesh cylinder 2. The stirring shaft 9 is equipped with a scraper 10 that contacts the inner wall of the drying mesh cylinder 2 and several sets of stirring blades 11. The housing 1 is equipped with a power mechanism that drives the drying mesh cylinder 2 and the stirring shaft 9 to rotate in different directions. The power mechanism includes a protective cover 16 located on the side of the housing 1 near the connecting pipe 4. The connecting pipe 4 passes through the protective cover 16 and is equipped with a rotating disk 17. The rotating disk 17 is equipped with an internal gear ring 18. The stirring shaft 9 passes through the protective cover 16 and is equipped with a first gear 19. A reduction motor 20 is located on the outside of the protective cover 16. The output shaft of the reduction motor 20 passes through the protective cover 16 and is equipped with a second gear 21 that meshes with the internal gear ring 18 and a third gear 22 that meshes with the first gear 19.

[0020] By setting up a drying screen cylinder 2 and a stirring shaft 9 that rotate in opposite directions, the material is continuously turned over during the drying process, which increases the contact area between the material and the hot air, and improves the drying efficiency and uniformity. The scraper 10 and stirring blade 11 on the stirring shaft 9 can effectively prevent the material from clumping or adhering to the inner wall of the drying screen cylinder 2 during the drying process, ensuring the flowability of the material and the drying quality.

[0021] The housing 1 has an air intake mechanism on one side and an exhaust mechanism on the other. The air intake mechanism includes air guide pipes 23 installed on both sides of the inner wall of one side of the housing 1. Each air guide pipe 23 has several air outlets 24 facing the drying mesh cylinder 2. The housing 1 has an air intake pipe 25 connected to the air guide pipes 23, and the air intake pipe 25 is connected to a hot air circulation unit. The exhaust mechanism includes air collection hoods 26 installed on both sides of the inner wall of one side of the housing 1. The housing 1 has an exhaust pipe 27 connected to the air collection hoods 26, and the exhaust pipe 27 is connected to a dust collector and the hot air circulation unit in sequence. The hot air circulation unit circulates air through a heater using a fan. The heated air enters the housing 1 through the air intake mechanism, and the dried air returns to the heater through the exhaust mechanism, forming a cycle. Upon return, the air first passes through a dust collector to remove dust generated during the drying process. By setting up the air intake and exhaust mechanisms, uniform distribution and recycling of hot air are achieved, improving the utilization rate of hot air and reducing energy consumption.

[0022] In operation, the granules to be dried enter the drying cylinder 2 through the feed hopper 12, guide pipe 13, and feed pipe 3. The drying cylinder 2 and stirring shaft 9 rotate in opposite directions under the action of the reduction motor 20. Simultaneously, under the action of the hot air circulation unit, hot air is blown out of the air outlet 24 towards the drying cylinder 2 for drying. The dried gas is discharged through the air collection hood 26 and recycled. After drying, the drying cylinder 2 is reset, and the discharge pipe 6 is located directly above the discharge port 28. Opening the valve on the discharge pipe 6 allows the granules to be discharged under gravity. This invention achieves uniform agitation of the material and uniform distribution of hot air during the drying process, improving drying efficiency and uniformity, simplifying the discharge process, and making it convenient to use.

[0023] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0024] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0025] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0026] The present invention has been described above with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any improvements made using the inventive concept and technical solution of the present invention, or direct application to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A dryer for producing granular drugs, comprising a horizontal shell (1), wherein a horizontal drying mesh cylinder (2) is rotatably connected inside the shell (1), characterized in that, A feed pipe (3) is provided at the center of one side of the drying screen cylinder (2), and a connecting pipe (4) is provided at the center of the other side. Support frames (5) are provided on the inner walls of both sides of the shell (1). The feed pipe (3) and the connecting pipe (4) are rotatably connected to the support frames (5). A feeding mechanism corresponding to the feed pipe (3) is provided on one side of the shell (1). A discharge port (28) is provided at the center of the bottom of the shell (1). A discharge pipe (6) corresponding to the discharge port (28) is provided at the center of the bottom of the drying screen cylinder (2). A discharge pipe (6) corresponding to the rotation trajectory of the discharge pipe (6) is provided on the inner wall of the shell (1). The chute (7) and the discharge pipe (6) slide around the circumference of the chute (7). The inner wall of the connecting pipe (4) is sealed with a sealing plate (8). The center of the sealing plate (8) is rotatably connected to a stirring shaft (9) that passes through the drying screen cylinder (2). The stirring shaft (9) is equipped with a scraper (10) that contacts the inner wall of the drying screen cylinder (2) and several sets of stirring blades (11). The shell (1) is equipped with a power mechanism that drives the drying screen cylinder (2) and the stirring shaft (9) to rotate in different directions. The shell (1) is equipped with an air intake mechanism on one side and an exhaust mechanism on the other side.

2. The dryer for producing granular drugs according to claim 1, characterized in that, The feeding mechanism includes a feeding hopper (12) and a guide pipe (13). The inlet of the guide pipe (13) is connected to the bottom of the feeding hopper (12), and the outlet passes into the housing (1) and is rotatably connected to the feeding pipe (3).

3. A dryer for producing granular drugs according to claim 1, characterized in that, The discharge pipe (6) is provided with sliders (14) on both sides. The sliders (14) are slidably connected to the inner wall of the chute (7), and the discharge pipe (6) is provided with an inwardly contracting guide port (15).

4. A dryer for producing granular drugs according to claim 1, characterized in that, The power mechanism includes a protective cover (16) located on the side of the housing (1) near the connecting pipe (4). The connecting pipe (4) passes through the protective cover (16) and is provided with a rotating disk (17). An internal gear ring (18) is provided on the rotating disk (17). The stirring shaft (9) passes through the protective cover (16) and is provided with a first gear (19). A reduction motor (20) is provided on the outside of the protective cover (16). The output shaft of the reduction motor (20) passes through the protective cover (16) and is provided with a second gear (21) that meshes with the internal gear ring (18) and a third gear (22) that meshes with the first gear (19).

5. A dryer for producing granular drugs according to claim 1, characterized in that, The air intake mechanism includes air guide pipes (23) installed on both sides of the inner wall of one side of the housing (1). The air guide pipes (23) are provided with several air blowing ports (24) facing the drying mesh cylinder (2). The housing (1) is provided with an air intake pipe (25) connected to the air guide pipes (23). The air intake pipe (25) is connected to a hot air circulation unit.

6. A dryer for producing granular drugs according to claim 5, characterized in that, The exhaust mechanism includes air collection hoods (26) on both sides of the inner wall of the housing (1). The housing (1) is provided with an exhaust pipe (27) connected to the air collection hoods (26). The exhaust pipe (27) is connected to the dust collector and the hot air circulation unit in sequence.

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