Vacuum drying equipment for raw material medicine

Abstract

The utility model relates to the technical field of vacuum drying, in particular to vacuum drying equipment for bulk drugs, which comprises a vacuum drying barrel, an electronic valve and a driving motor, a connecting pipe is fixedly mounted on a top frame of the vacuum drying barrel, and the electronic valve is fixedly mounted on the outer side of the connecting pipe in a sleeving manner. A supporting rod and a mounting frame are fixedly mounted on the bottom face of the vacuum drying barrel, a driving motor is fixedly mounted in the center of the mounting frame, a rotating shaft is fixedly mounted at the output top end of the driving motor in an inlaid mode, the rotating shaft penetrates through the center of the bottom layer of the vacuum drying barrel and is sealed through a corrugated pipe, and a sealing cover plate is mounted at the top end of the vacuum drying barrel. According to the connecting square rods arranged on the circular bottom plate, the whole device can be stably installed on the supporting disc to be placed, the subsequent supporting disc can drive the device to rotate, the uniformity of subsequent heating and drying is improved, the phenomenon that raw material medicine is dried unevenly is reduced, and material taking operation is convenient.

Description

Technical Field

[0001] This utility model relates to the field of vacuum drying technology, and in particular to a vacuum drying device for pharmaceutical raw materials. Background Technology

[0002] The core principle of vacuum drying is to use a vacuum system to reduce the pressure inside the drying chamber, allowing water or organic solvents to evaporate rapidly at a lower temperature. This avoids the damage of high temperatures to the active ingredients of the material, while also reducing energy consumption and improving drying uniformity. In the production of active pharmaceutical ingredients, the selection of vacuum drying equipment is directly related to the purity, crystal stability, and production efficiency of the drug.

[0003] Vacuum drying equipment used for pharmaceutical raw materials processes small batches of high-value raw materials by placing materials in layers on trays and combining heat conduction or radiation heating. However, simply placing materials in layers on trays can lead to uneven drying during the vacuum heating and drying process.

[0004] Therefore, the existing vacuum drying equipment, which simply places materials in layers on trays, leads to uneven drying during the vacuum heating and drying process. This utility model uses an open receiving space composed of a circular base plate, straight rods, and an annular top frame to place raw materials and pharmaceuticals, improving heating efficiency. Furthermore, the rotating support disc enhances the uniformity of the drying process. The entire unit is easy to disassemble for material retrieval, and the heating component is located in the center of the vacuum drying barrel, diffusing heat from the inside out to improve heating efficiency. Utility Model Content

[0005] To overcome the problem of uneven drying during vacuum heating and drying caused by simply placing materials in layers on trays in common vacuum drying equipment used for pharmaceutical raw materials.

[0006] The technical solution of this utility model is as follows: a vacuum drying device for raw pharmaceutical materials, comprising a vacuum drying barrel, an electronic valve, and a drive motor. A connecting pipe is fixedly installed on the top frame of the vacuum drying barrel, and an electronic valve is fixedly installed on the outer side of the connecting pipe. A support rod and a mounting frame are fixedly installed on the bottom surface of the vacuum drying barrel, and a drive motor is fixedly installed at the center of the mounting frame. A rotating shaft is embedded and fixedly installed at the output top of the drive motor, and the rotating shaft passes through the bottom center of the vacuum drying barrel and is sealed by a corrugated pipe. A sealing cover is installed at the top of the vacuum drying barrel, and a sealing rubber layer is bonded and installed around the bottom edge of the sealing cover. A sealing rubber sleeve is embedded in the center of the sealing cover, and a heating rod is installed at the center of the bottom surface of the sealing cover.

[0007] Preferably, a support disc is fixedly installed at the top of the rotating shaft, and the support disc is located at the inner center of the vacuum drying barrel. A combined square groove is formed on the support disc. A circular base plate is placed on the top surface of the support disc, and a connecting square rod is set at the center of the bottom surface of the circular base plate. The connecting square rod passes through the support disc and the combined square groove. A straight rod is set on the top surface of the circular base plate, and an annular top frame is set at the top of the straight rod. Fixing rods are fixedly installed in a cross shape on the inner wall of the annular top frame. The straight rod and the annular top frame are located inside the vacuum drying barrel, and the straight rod and the annular top frame surround the outer side of the heating rod. There is a gap between the straight rod and the annular top frame and the heating rod and the inner wall of the vacuum drying barrel.

[0008] Preferably, the circular base plate and the connecting square rod are integrated into a single structure, and the height of the connecting square rod is greater than the thickness of the supporting disc.

[0009] Preferably, the connecting square rod and the combined square groove are connected by sliding engagement, and the combined square grooves are evenly distributed on the supporting disc, and there is a gap between the bottom surface of the connecting square rod and the inner bottom surface of the vacuum drying barrel.

[0010] Preferably, the straight rod is connected to the annular top frame and the circular bottom plate by welding, and the straight rod is distributed at equal angles on the circular bottom plate and the annular top frame.

[0011] Preferably, the top surface of the sealing cover is symmetrically provided with an arc-shaped handle, and the sealing cover is connected to the vacuum drying barrel by a threaded fixation, and the sealing rubber layer is connected to the top surface of the vacuum drying barrel by a sealing compression.

[0012] Preferably, the heating rod is provided with an electric wire at its top end, and the heating rod is connected to the sealing cover by a threaded connection, with the electric wire passing through the sealing rubber sleeve.

[0013] The beneficial effects of this utility model are:

[0014] 1. Based on the connecting square rods set on the circular base plate, the whole unit can be stably installed on the support disc for placement. The support disc can then drive it to rotate, improving the uniformity of subsequent heating and drying, reducing the phenomenon of uneven drying of raw materials, and facilitating material handling.

[0015] 2. The vacuum drying chamber is sealed and assembled with a sealing cover and a sealing rubber layer. A heating rod is installed at the center of the bottom surface of the sealing cover, so that the heating rod is located in the center of the vacuum drying chamber. The heating method diffuses outward from the center, which improves the heating and drying efficiency. In addition, the sealing rubber layer and the heating rod enhance the sealing performance and facilitate subsequent vacuuming and vacuum drying. Attached Figure Description

[0016] Figure 1The diagram shown is a three-dimensional structural illustration of the present invention.

[0017] Figure 2 This utility model is shown. Figure 1 Enlarged structural diagram of point A in the middle;

[0018] Figure 3 The diagram shown is a three-dimensional view of the opened structure of this utility model.

[0019] Figure 4 The diagram shown is a three-dimensional cross-sectional view of the interior of the vacuum drying barrel of this utility model from an upward perspective.

[0020] Figure 5 The diagram shown is a three-dimensional structural schematic of the supporting disc of this utility model.

[0021] Figure 6 The diagram shown is a three-dimensional structural schematic of the circular base plate, straight rod, and annular top frame of this utility model from an upward perspective.

[0022] Explanation of reference numerals in the attached drawings: 1. Vacuum drying chamber; 2. Connecting pipe; 3. Electronic valve; 4. Support rod; 5. Mounting bracket; 6. Drive motor; 7. Rotating shaft; 8. Support disc; 9. Combined square groove; 10. Circular base plate; 11. Connecting square rod; 12. Straight rod; 13. Annular top frame; 14. Fixing rod; 15. Sealing cover plate; 16. Sealing rubber layer; 17. Sealing rubber sleeve; 18. Heating rod. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1-6This utility model provides a technical solution: a vacuum drying device for raw pharmaceutical materials, including a vacuum drying barrel 1, an electronic valve 3, and a drive motor 6. A connecting pipe 2 is fixedly installed on the top frame of the vacuum drying barrel 1, and the electronic valve 3 is fixedly installed on the outer side of the connecting pipe 2. A support rod 4 and a mounting frame 5 are fixedly installed on the bottom surface of the vacuum drying barrel 1, and the drive motor 6 is fixedly installed at the center of the mounting frame 5. A rotating shaft 7 is embedded and fixedly installed at the output top of the drive motor 6, and the rotating shaft 7 passes through the bottom center of the vacuum drying barrel 1 and is sealed by a corrugated pipe. A sealing cover plate 15 is installed at the top of the vacuum drying barrel 1, and a sealing rubber layer 16 is bonded and installed around the bottom edge of the sealing cover plate 15. A sealing rubber sleeve 17 is embedded in the center of the sealing cover plate 15, and a heating rod 18 is installed at the center of the bottom surface of the sealing cover plate 15.

[0025] A support disc 8 is fixedly installed at the top of the rotating shaft 7, and the support disc 8 is located at the center of the vacuum drying barrel 1. A combined square groove 9 is opened on the support disc 8. A circular base plate 10 is placed on the top surface of the support disc 8, and a connecting square rod 11 is set at the center of the bottom surface of the circular base plate 10. The connecting square rod 11 passes through the support disc 8 and the combined square groove 9. A straight rod 12 is set on the top surface of the circular base plate 10, and an annular top frame 13 is set at the top of the straight rod 12. Fixing rods 14 are fixedly installed in a cross shape on the inner wall of the annular top frame 13. The straight rod 12 and the annular top frame 13 are located inside the vacuum drying barrel 1, and the straight rod 12 and the annular top frame 13 surround the outside of the heating rod 18. There is a gap between the straight rod 12 and the annular top frame 13 and the heating rod 18 and the inner wall of the vacuum drying barrel 1.

[0026] The circular base plate 10 and the connecting square rod 11 are integrated into one structure, and the height of the connecting square rod 11 is greater than the thickness of the supporting disc 8, which allows the circular base plate 10 to move the connecting square rod 11, thereby enabling subsequent installation and disassembly work.

[0027] The connection method between the connecting square rod 11 and the combined square groove 9 is sliding engagement. The combined square groove 9 is evenly distributed on the supporting disc 8, and there is a gap between the bottom surface of the connecting square rod 11 and the inner bottom surface of the vacuum drying barrel 1. The connecting square rod 11 can slide into the combined square groove 9 for assembly, thereby carrying out the installation work. The overall assembly is conducive to subsequent disassembly and material removal operations.

[0028] The straight rod 12 is connected to the annular top frame 13 and the circular base plate 10 by welding. The straight rod 12 is distributed at equal angles on the circular base plate 10 and the annular top frame 13, which allows the straight rod 12, the annular top frame 13 and the circular base plate 10 to form a storage space for the raw material. At the same time, the storage space can facilitate air flow and improve drying efficiency.

[0029] The top surface of the sealing cover 15 is symmetrically provided with an arc-shaped handle, and the sealing cover 15 is connected to the vacuum drying barrel 1 by thread fixing. The sealing rubber layer 16 is connected to the top surface of the vacuum drying barrel 1 by sealing compression. The sealing work can be carried out by combining the sealing cover 15 with the vacuum drying barrel 1, which facilitates the subsequent vacuuming work.

[0030] The heating rod 18 is equipped with an electric wire at its top end, and the heating rod 18 is connected to the sealing cover plate 15 by a threaded fixation. The electric wire passes through the sealing rubber sleeve 17, which facilitates the installation of the heating rod 18, allowing it to be disassembled for maintenance. The sealing rubber sleeve 17 also facilitates the passage of the electric wire and prevents air leakage.

[0031] Working principle: According to Figures 3-6 First, the vacuum drying barrel 1 can be placed in a suitable position using the support rod 4. Then, by pulling the fixed rod 14, the annular top frame 13, the straight rod 12, and the circular bottom plate 10 are pulled up and out. At the same time, the circular bottom plate 10 drives the connecting square rod 11 to slide and separate from the combined square groove 9, which facilitates extraction and replenishment of raw materials. After the feeding is completed, according to the above principle, the annular top frame 13, the straight rod 12, and the circular bottom plate 10 are moved into the circular bottom plate 10. The circular bottom plate 10 then drives the connecting square rod 11 to pass through the combined square groove 9 and be placed smoothly on the support disc 8. The subsequent operations are carried out in sequence.

[0032] according to Figures 1-3 Next, the sealing cover 15 can be threadedly assembled and fixed to the vacuum drying barrel 1. The sealing cover 15 drives the heating rod 18 to slide into the center of the vacuum drying barrel 1, while the sealing rubber layer 16 improves the sealing performance after assembly.

[0033] according to Figure 1 and Figures 3-4 Then, the connecting pipe 2 is assembled with an external vacuum pump to perform a vacuuming operation. With the assistance of the electronic valve 3, the vacuum drying barrel 1 can be evacuated. After the operation is completed, the drive motor 6 and the heating rod 18 can be connected to an external power source via wires and started. The drive motor 6 can drive the support disc 8 to rotate at a low speed via the rotating shaft 7. At the same time, the bellows seal improves the sealing performance. The heating rod 18 heats the inside of the vacuum drying barrel 1, so that the raw material in the vacuum drying barrel 1 can undergo vacuum drying. The rotation can improve the uniformity of drying. The electronic valve 3, drive motor 6 and heating rod 18 are known and existing technologies on the market, and are described in detail in this step.

[0034] The above is the entire working process of the device, and all contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A vacuum drying device for pharmaceutical raw materials, comprising a vacuum drying chamber (1), an electronic valve (3), and a drive motor (6), characterized in that: A connecting pipe (2) is fixedly installed on the top frame of the vacuum drying barrel (1), and an electronic valve (3) is fixedly installed on the outside of the connecting pipe (2). A support rod (4) and a mounting bracket (5) are fixedly installed on the bottom surface of the vacuum drying barrel (1), and a drive motor (6) is fixedly installed in the center of the mounting bracket (5). A rotating shaft (7) is embedded and fixedly installed at the output top of the drive motor (6), and the rotating shaft (7) passes through the bottom center of the vacuum drying barrel (1) and is sealed by a corrugated pipe. A sealing cover plate (15) is installed at the top of the vacuum drying barrel (1), and a sealing rubber layer (16) is bonded around the bottom edge of the sealing cover plate (15). A sealing rubber sleeve (17) is embedded in the center of the sealing cover plate (15), and a heating rod (18) is installed in the center of the bottom surface of the sealing cover plate (15).

2. The vacuum drying equipment for active pharmaceutical ingredients according to claim 1, characterized in that: A support disc (8) is fixedly installed at the top of the rotating shaft (7), and the support disc (8) is located at the center of the vacuum drying barrel (1). A combined square groove (9) is provided on the support disc (8). A circular base plate (10) is placed on the top surface of the support disc (8), and a connecting square rod (11) is provided at the center of the bottom surface of the circular base plate (10). The connecting square rod (11) passes through the support disc (8) and the combined square groove (9). A straight rod is provided on the top surface of the circular base plate (10). (12), and an annular top frame (13) is provided at the top of the straight rod (12), and a fixing rod (14) is fixedly installed on the inner wall of the annular top frame (13) in a cross shape. The straight rod (12) and the annular top frame (13) are located inside the vacuum drying barrel (1), and the straight rod (12) and the annular top frame (13) surround the outer side of the heating rod (18), and there is a gap between the straight rod (12) and the annular top frame (13) and the heating rod (18) and the inner wall of the vacuum drying barrel (1).

3. The vacuum drying equipment for pharmaceutical raw materials according to claim 2, characterized in that: The circular base plate (10) and the connecting square rod (11) are integrated into one structure, and the height of the connecting square rod (11) is greater than the thickness of the supporting disc (8).

4. A vacuum drying apparatus for pharmaceutical raw materials according to claim 2, characterized in that: The connection between the connecting square rod (11) and the combined square groove (9) is a sliding engagement, and the combined square groove (9) is evenly distributed on the supporting disc (8), and there is a gap between the bottom surface of the connecting square rod (11) and the inner bottom surface of the vacuum drying barrel (1).

5. A vacuum drying apparatus for pharmaceutical raw materials according to claim 2, characterized in that: The straight rod (12) is connected to the annular top frame (13) and the circular base plate (10) by welding, and the straight rod (12) is distributed at equal angles on the circular base plate (10) and the annular top frame (13).

6. A vacuum drying apparatus for pharmaceutical raw materials according to claim 1, characterized in that: The top surface of the sealing cover (15) is symmetrically provided with an arc-shaped handle, and the sealing cover (15) is connected to the vacuum drying barrel (1) by thread fixing, and the sealing rubber layer (16) is connected to the top surface of the vacuum drying barrel (1) by sealing compression.

7. A vacuum drying apparatus for pharmaceutical raw materials according to claim 1, characterized in that: The heating rod (18) is provided with an electric wire at its top end, and the heating rod (18) is connected to the sealing cover plate (15) by a threaded fixation, and the electric wire passes through the sealing rubber sleeve (17).

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