Tablet drying device

Abstract

The utility model discloses a tablet drying device, and relates to the technical field of pharmaceutical drying equipment. The device structurally comprises a rack, a drying air guide base, a drying bin, a filtering upper cover, a piston charging barrel, an air inlet pipeline, an air filter, an electric heating fan and a butterfly valve; the air inlet pipeline is connected with the air inlet end of the drying air guide base. The air filter, the electric heating fan and the butterfly valve are sequentially installed on the air inlet pipeline in the air inlet direction of the air inlet pipeline. The drying air guide base is mounted on the rack; the piston charging barrel comprises a round pipe; a first rectangular discharge hole is formed in the side wall of the circular pipe; an isolation filter plate is fixed to the inner wall of the circular pipe, and the upper surface of the isolation filter plate is flush with the lower end of the rectangular discharging hole. By adopting the design that the piston charging barrel is combined with the drying bin, uniform suspension and dynamic heat exchange of tablets in the drying process are realized, so that the drying efficiency is remarkably improved; and meanwhile, by optimizing the discharging structure and simplifying the equipment design, discharging is more convenient, and equipment maintenance is more convenient.

Description

Technical Field

[0001] This utility model belongs to the field of pharmaceutical drying equipment technology, and in particular relates to a tablet drying device. Background Technology

[0002] In the pharmaceutical industry, tablet drying is a crucial step in the production process. Traditional tablet drying equipment mostly employs static drying methods, placing tablets on fixed drying beds or trays and drying them using hot air or infrared radiation. However, this method has several drawbacks: in static drying, the contact area between the tablets and the hot air is limited, resulting in low heat transfer efficiency and slow drying speed. Furthermore, tablets tend to accumulate during the drying process, leading to uneven drying in certain areas, further reducing efficiency. Traditional tablet drying equipment often requires manual turning or complex mechanical structures for assisted discharge, which not only increases labor intensity but also easily leads to tablet breakage and contamination. To address these issues and improve tablet drying efficiency, as well as the convenience and reliability of post-drying discharge, this invention proposes a novel tablet drying device. Utility Model Content

[0003] The purpose of this invention is to provide a tablet drying device that, through an innovative design combining a piston cylinder and a drying chamber, achieves uniform suspension and efficient heat exchange of tablets during the drying process, while also improving the convenience of tablet discharge.

[0004] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0005] This utility model relates to a tablet drying device, comprising a frame, a drying air guide base, a drying chamber, a filter cover, a piston cylinder, an air inlet pipe, an air filter, an electric hot air blower, and a butterfly valve. The air inlet pipe is connected to the air inlet end of the drying air guide base. The air filter, electric hot air blower, and butterfly valve are sequentially installed on the air inlet pipe along the air inlet direction. The drying air guide base is mounted on the frame. The piston cylinder comprises a circular tube. A first rectangular discharge hole is formed on the side wall of the circular tube. An isolation filter plate is fixed to the inner wall of the circular tube, and the upper surface of the isolation filter plate is flush with the lower end of the rectangular discharge hole. Two water... A guide rod is set horizontally; the drying chamber includes a circular tube; the circular tube is inserted and installed on the drying air guide base, and the outer wall of the circular tube slides with the inner wall of the circular tube; two oblong through holes are symmetrically opened on the outer wall of the circular tube along its axial direction; the guide rod slides along the oblong through holes; a clamping plate that cooperates with the guide rod is rotatably installed on the outer wall of the circular tube above the two oblong through holes by a pin; a second rectangular discharge hole is opened on the outer wall of the circular tube; a drying hopper is fixed at the upper end of the circular tube; two first handles are symmetrically fixed on the outer wall of the drying hopper; and a filter cover is installed at the upper end of the drying hopper.

[0006] As a preferred embodiment of this utility model, when the guide rod is positioned at the upper end of the oblong through hole, the clamping plate is fastened to the guide rod; when the guide rod is positioned at the lower end of the oblong through hole, the first rectangular discharge hole is completely placed in the second rectangular discharge hole; when the guide rod is positioned at the upper end of the oblong through hole, the first rectangular discharge hole and the second rectangular discharge hole are completely offset.

[0007] As a preferred technical solution of this utility model, it also includes a valve plate; an inclined guide groove that cooperates with the second rectangular discharge hole is fixed on the outer wall of the circular tube; a limiting baffle that cooperates with the valve plate is symmetrically fixed on the inner wall of the inclined guide groove near the circular tube; the valve plate is inserted and installed between the limiting baffle and the circular tube.

[0008] As a preferred embodiment of this utility model, the valve plate includes an arc-shaped insert plate; the lower outer edge of the arc-shaped insert plate is provided with a bevel; and a second handle is fixed to the upper outer wall of the arc-shaped insert plate.

[0009] As a preferred embodiment of this utility model, the frame includes a rectangular base plate; four fixed columns are fixed on the upper surface of the rectangular base plate; and a rectangular top plate is fixed on the top surface of the fixed columns.

[0010] As a preferred embodiment of this utility model, the drying air guide base includes a cylinder vertically fixed on the rectangular base plate; an air inlet pipe connected to the air inlet pipe is fixed through the side wall of the cylinder; the cylindrical tube is inserted and installed at the upper end of the cylinder, and a limiting ring plate is fixed on the inner wall of the upper end of the cylinder; a first sealing ring is installed between the limiting ring plate and the cylindrical tube.

[0011] As a preferred embodiment of this utility model, a linear drive device is installed between the rectangular top plate and the filter cover; the linear drive device includes an electric telescopic rod and four guide rods fixed on the filter cover; a guide cylinder that slides linearly with the guide rods is fixed through the rectangular top plate; the outer cylinder of the electric telescopic rod is installed through the rectangular top plate; the telescopic end of the electric telescopic rod is hinged to the filter cover.

[0012] As a preferred embodiment of this utility model, the filter cover includes a circular cover that is fastened to the upper end of the drying hopper; a second bevel is formed on the inner ring edge at the lower end of the circular cover; a circular ring plate is fixed to the inner wall of the circular cover near the lower end; a second sealing ring is fixed to the lower surface of the circular ring plate; an air outlet pipe is fixed through the outer wall of the circular cover; and a diamond wire mesh is fixed to the inner wall of the air outlet pipe.

[0013] This utility model has the following beneficial effects:

[0014] This invention achieves uniform exposure of tablets to hot air during the drying process through a sliding fit between the piston cylinder and the drying chamber, along with a locking mechanism. This design ensures that the tablets are fully suspended and "boiling" within the drying chamber, allowing hot air to penetrate the tablet surface evenly, accelerating moisture evaporation and improving drying efficiency.

[0015] This invention achieves a flexible and controllable dispensing mechanism by using a guide rod and a clamping plate to connect the first rectangular discharge hole of the piston cylinder and the second rectangular discharge hole of the drying chamber. When the guide rod is positioned at the bottom of the oblong through hole, the first and second rectangular discharge holes are perfectly aligned, allowing tablets to flow out smoothly. When the guide rod is positioned at the top, the two discharge holes are completely offset, preventing tablets from flowing out. This design not only simplifies the dispensing operation but also improves the accuracy and controllability of the dispensing process.

[0016] This invention features a compact and rational structural design for the piston cylinder and drying chamber, with tight and reliable connections between components, reducing the overall size and floor space required. This compact design not only improves the space utilization of the device but also facilitates its transportation and installation.

[0017] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the tablet drying device of this utility model.

[0020] Figure 2 This is a structural diagram of the frame and the drying air guide base.

[0021] Figure 3 This is a schematic diagram of the drying chamber.

[0022] Figure 4 This is a schematic diagram of the filter cover.

[0023] Figure 5 This is a schematic diagram of the piston barrel structure.

[0024] Figure 6 This is a schematic diagram of the valve plate.

[0025] The attached diagram lists the components represented by each number as follows:

[0026] 1-Frame, 2-Drying air guide base, 3-Drying chamber, 4-Filter cover, 5-Piston cylinder, 6-Valve plate, 7-Inlet duct, 8-Air filter, 9-Electric hot air blower, 10-Butterfly valve, 11-Rectangular base plate, 12-Fixed column, 13-Rectangular top plate, 14-Electric telescopic rod, 15-Guide rod, 16-Guide cylinder, 21-Cylinder, 22-Inlet pipe, 23-Limiting ring plate, 31-Circular tube section 32-Oval through hole, 33-Clamping plate, 34-Second rectangular discharge hole, 35-Inclined guide trough, 36-Limiting baffle, 37-Drying hopper, 38-First handle, 41-Circular cover, 42-Second bevel, 43-Circular ring plate, 44-Air outlet pipe, 45-Diamond wire mesh, 51-Circular tube, 52-First rectangular discharge hole, 53-Isolation filter plate, 54-Guide rod, 61-Arc insert plate, 62-Second handle. Detailed Implementation

[0027] 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 scope of protection of the present utility model. Specific Implementation Example 1:

[0029] Please see Figure 1-6 As shown, this utility model is a tablet drying device, including a frame 1, a drying air guide base 2, a drying chamber 3, a filter cover 4, a piston cylinder 5, an air inlet pipe 7, an air filter 8, an electric hot air blower 9, and a butterfly valve 10. The air inlet pipe 7 is connected to the air inlet end of the drying air guide base 2. The air filter 8, the electric hot air blower 9, and the butterfly valve 10 are sequentially installed on the air inlet pipe 7 along the air inlet direction. The drying air guide base 2 is installed on the frame 1. The air filter 8 purifies the hot air. The electric hot air blower 9 provides the hot air. The butterfly valve 10 controls the airflow, and several vent holes are provided on the valve plate of the butterfly valve 10 to prevent thermal damage caused by insufficient airflow when the butterfly valve 10 is left open.

[0030] The piston barrel 5 includes a circular tube 51. A first rectangular discharge hole 52 is provided on the side wall of the circular tube 51. A separation filter plate 53 is fixed on the inner wall of the circular tube 51, and the upper surface of the separation filter plate 53 is flush with the lower end of the rectangular discharge hole 52. Two horizontally arranged guide rods 54 are fixed axially symmetrically on the outer wall of the circular tube 51.

[0031] The drying chamber 3 includes a circular tube section 31. The circular tube section 31 is inserted and installed on the drying air guide base 2, and the outer wall of the circular tube 51 slides against the inner wall of the circular tube section 31. Two oblong through holes 32 are symmetrically arranged along the outer wall of the circular tube section 31. A guide rod 54 slides along the oblong through holes 32 to control the alignment of the discharge holes. A locking plate 33, which cooperates with the guide rod 54, is rotatably mounted on the outer wall of the circular tube section 31 above the two oblong through holes 32 via a pin, and is used to lock the position of the piston cylinder 5. A second rectangular discharge hole 34 is provided on the outer wall of the circular tube section 31. A drying hopper 37 is fixed to the upper end of the circular tube section 31. A window for monitoring the removal of tablets during the drying process is also provided on the side wall of the drying hopper 37. A plug (not shown in the figure) is threaded onto the window. When removing tablets, the plug is removed first, and then the tablet removal rod is used to remove the tablets. Two first handles 38 are symmetrically fixed to the outer wall of the drying hopper 37. The filter cover 4 is installed on the upper part of the drying hopper 37. Before drying, open the filter cover 4 and place the tablets to be dried into the drying hopper 3.

[0032] The specific relative positions of the drying chamber 3 and the piston cylinder 5 are configured such that when the guide rod 54 is positioned at the upper end of the oblong through hole 32, the clamping plate 33 is fastened onto the guide rod 54. When the guide rod 54 is positioned at the lower end of the oblong through hole 32, the first rectangular discharge hole 52 is completely immersed in the second rectangular discharge hole 34. When the guide rod 54 is positioned at the upper end of the oblong through hole 32, the first rectangular discharge hole 52 and the second rectangular discharge hole 34 are completely offset.

[0033] The frame 1 provides overall support, and its structure includes a rectangular base plate 11. Four fixed columns 12 are fixed to the upper surface of the rectangular base plate 11. A rectangular top plate 13 is fixed to the top surface of the fixed columns 12. The drying air guide base 2 includes a cylinder 21 vertically fixed to the rectangular base plate 11. An air inlet pipe 22 connected to the air inlet duct 7 is fixed through the side wall of the cylinder 21. A cylindrical tube 31 is inserted into the upper end of the cylinder 21, and a limiting ring plate 23 is fixed to the inner wall of the upper end of the cylinder 21. A first sealing ring is installed between the limiting ring plate 23 and the cylindrical tube 31 to ensure sealing.

[0034] During the drying process, the electric hot air blower 9 blows hot air into the drying air guide base 2 through the air inlet pipe 7. The hot air is purified by the air filter 8, and the air volume is controlled by the butterfly valve 10. The hot air enters the drying chamber 3, and through the fluidized bed drying principle, the wet particles are suspended and "boiling" in a dynamic state, where heat exchange takes place, removing moisture and thus drying the tablets.

[0035] This system also includes a valve plate 6 to control tablet flow. An inclined guide trough 35, which mates with the second rectangular discharge hole 34, is fixed to the outer wall of the circular tube 31. A limiting baffle 36, which mates with the valve plate 6, is symmetrically fixed to the inner wall of the inclined guide trough 35 near the circular tube 31. The valve plate 6 is inserted between the limiting baffle 36 and the circular tube 31. The valve plate 6 includes an arc-shaped insert plate 61. A bevel is formed on the lower outer edge of the arc-shaped insert plate 61. A second handle 62 is fixed to the upper outer wall of the arc-shaped insert plate 61.

[0036] The discharge control involves the piston cylinder 5 moving up and down within the drying chamber 3 via the sliding engagement of the guide rod 54 within the oblong through-hole 32 and the locking mechanism of the clamping plate 33. When the guide rod 54 is positioned at the lowest point of the oblong through-hole 32, the first rectangular discharge hole 52 is fully positioned within the second rectangular discharge hole 34, allowing tablets to pass through and fall into the inclined guide chute 35. The flow rate of tablets can be controlled via the valve plate 6.

[0037] A linear drive device is installed between the rectangular top plate 13 and the filter cover 4. The linear drive device includes an electric telescopic rod 14 and four guide rods 15 fixed to the filter cover 4. A guide cylinder 16, which slides linearly with the guide rods 15, is fixed through the rectangular top plate 13. The outer cylinder of the electric telescopic rod 14 is mounted through the rectangular top plate 13. The telescopic end of the electric telescopic rod 14 is hinged to the filter cover 4.

[0038] The filter cover 4 includes a circular cover 41 that is fastened to the upper end of the drying hopper 37. A second bevel 42 is formed on the inner circumference of the lower end of the circular cover 41. A circular ring plate 43 is fixed to the inner wall of the circular cover 41 near the lower end. A second sealing ring is fixed to the lower surface of the circular ring plate 43 to ensure a tight seal. An exhaust pipe 44 is fixed through the outer wall of the circular cover 41. A diamond wire mesh 45 is fixed to the inner wall of the exhaust pipe 44 to prevent tablets from being discharged with the hot air.

[0039] Filtration and sealing: The diamond wire mesh 45 inside the circular cover 41 of the filter cover 4 can prevent tablets from being discharged with hot air, while the circular ring plate 43 at the lower end of the circular cover 41 and the second sealing ring on its lower surface can ensure the airtightness of the device.

[0040] The specific implementation process of this embodiment:

[0041] Equipment Inspection: Check that all components of the device are securely installed, ensuring there is no looseness or damage. Check that the electric hot air blower 9, butterfly valve 10, and other equipment are operating normally. Material Preparation: Place the tablets to be dried into the drying chamber 3 and piston cylinder 5, ensuring the tablets are evenly distributed and do not exceed the capacity limit of the drying chamber 3. Equipment Start-up: Start the electric hot air blower 9, blowing hot air through the air inlet duct 7 to the drying air guide base 2. Adjust the butterfly valve 10 to control the airflow, ensuring the hot air temperature and velocity are suitable for tablet drying. Temperature Setting: Set an appropriate drying temperature according to the properties of the tablets and drying requirements. The temperature can be controlled by adjusting the power of the electric hot air blower 9. Drying Process Monitoring: During the drying process, periodically check the drying status of the tablets. The degree of drying can be judged by observing the appearance of the tablets and measuring the moisture content. Discharge Control: Once the tablets have dried to the required level, the piston cylinder 5 is moved to position the guide rod 54 at the lowest end of the oblong through hole 32, aligning the first rectangular discharge hole 52 with the second rectangular discharge hole 34, allowing the tablets to pass through and fall into the inclined guide chute 35. The outflow rate of tablets is controlled by adjusting the position of the valve plate 6. Drying Completion: After all tablets have dried and been discharged, the electric hot air blower 9 and butterfly valve 10 are turned off, stopping the blowing of hot air onto the drying guide base 2. Material Removal: The dried tablets are collected from the outlet of the inclined guide chute 35 for packaging or further processing. Equipment Cleaning: The equipment is cleaned and maintained after each use. Removal of residual tablets and impurities from the equipment is essential to maintain its cleanliness and hygiene.

[0042] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0043] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A tablet drying device, characterized in that: it comprises a rack (1), a drying air guide base (2), a drying bin (3), a filtering upper cover (4), a piston cylinder (5), an air inlet pipeline (7), an air filter (8), an electric heating fan (9), and a butterfly valve (10); the air inlet pipeline (7) is connected with the air inlet end of the drying air guide base (2), the air filter (8), the electric heating fan (9), and the butterfly valve (10) are sequentially installed on the air inlet pipeline (7) along the air inlet direction of the air inlet pipeline (7); the drying air guide base (2) is installed on the rack (1); the piston cylinder (5) comprises a circular tube (51); a first rectangular discharge hole (52) is formed in the side wall of the circular tube (51); a separation filter plate (53) is fixed to the inner wall of the circular tube (51), and the upper surface of the separation filter plate (53) is flush with the lower end of the rectangular discharge hole (52); two horizontally arranged guide round rods (54) are fixed to the outer wall of the circular tube (51) in an axisymmetric manner; the drying bin (3) comprises a circular tube part (31); the circular tube part (31) is insertedly installed on the drying air guide base (2), the outer wall of the circular tube (51) is in sliding fit with the inner wall of the circular tube part (31); two waist round through holes (32) are formed in the outer wall of the circular tube part (31) in an axisymmetric manner; the guide round rods (54) are in sliding fit along the waist round through holes (32); one clamping plate (33) matched with the guide round rods (54) is rotatably installed on the outer wall of the circular tube part (31) above the two waist round through holes (32) through a pin shaft; a second rectangular discharge hole (34) is formed in the outer wall of the circular tube part (31); a drying material bin (37) is fixed to the upper end of the circular tube part (31); two first handles (38) are fixed to the outer wall of the drying material bin (37) in an axisymmetric manner; the filtering upper cover (4) is installed on the upper end of the drying material bin (37). when the guide round rods (54) are located at the upper end position of the waist round through holes (32), the clamping plates (33) are buckled on the guide round rods (54); when the guide round rods (54) are located at the lowermost end of the waist round through holes (32), the first rectangular discharge hole (52) is completely placed in the second rectangular discharge hole (34); when the guide round rods (54) are located at the upper end position of the waist round through holes (32), the first rectangular discharge hole (52) is completely staggered with the second rectangular discharge hole (34).

2. The tablet drying apparatus according to claim 1, wherein it further comprises a valve plate (6); an inclined material guide groove (35) matched with the second rectangular discharge hole (34) is fixed to the outer wall of the circular tube part (31); a limiting baffle (36) matched with the valve plate (6) is fixed to the relative inner wall of the end of the inclined material guide groove (35) close to the circular tube part (31) in a symmetric manner; the valve plate (6) is insertedly installed between the limiting baffle (36) and the circular tube part (31).

3. The tablet drying apparatus according to claim 1 or 2, characterized in that, the valve plate (6) comprises a circular arc insertion plate (61); a bevel is formed in the outer edge of the lower end of the circular arc insertion plate (61); a second handle (62) is fixed to the outer wall of the upper end of the circular arc insertion plate (61).

4. The tablet drying apparatus according to claim 3, wherein ​ 5. The tablet drying apparatus according to claim 1, wherein The rack (1) comprises a rectangular bottom plate (11); four fixed columns (12) are fixed on the upper surface of the rectangular bottom plate (11); a rectangular top plate (13) is fixed on the top surface of the fixed columns (12).

6. The tablet drying apparatus according to claim 5, wherein The dry air guiding base (2) comprises a cylinder (21) vertically fixed on the rectangular bottom plate (11); an air inlet pipe (22) connected with the air inlet pipeline (7) is fixed through the side wall of the cylinder (21); the circular pipe part (31) is inserted and installed on the upper end of the cylinder (21), and a limiting ring plate (23) is fixed on the inner wall of the upper end of the cylinder (21); a first sealing rubber ring is installed between the limiting ring plate (23) and the circular pipe part (31).

7. The tablet drying apparatus according to claim 5, wherein A linear driving device is installed between the rectangular top plate (13) and the filtering upper cover (4); the linear driving device comprises an electric telescopic rod (14) and four guide rods (15) fixed on the filtering upper cover (4); a guide cylinder (16) linearly slidingly matched with the guide rods (15) is fixed through the rectangular top plate (13); the outer cylinder body of the electric telescopic rod (14) is installed through the rectangular top plate (13); the telescopic end of the electric telescopic rod (14) is hingedly connected with the filtering upper cover (4).

8. The tablet drying apparatus of claim 1, wherein, The filtering upper cover (4) comprises a circular cover (41) buckled on the upper end of the drying bin (37); a second bevel (42) is arranged on the inner ring rib of the lower end of the circular cover (41); a circular ring plate (43) is fixed on the inner wall of the circular cover (41) close to the lower end; a second sealing rubber ring is fixed on the lower surface of the circular ring plate (43); an air outlet pipe (44) is fixed through the outer wall of the circular cover (41); a diamond wire mesh (45) is fixed on the inner wall of the air outlet pipe (44).

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