Drum-type powder drying equipment

Abstract

The utility model discloses drum-type powder drying equipment, and relates to the technical field of drying equipment, in particular to a rack and a hot air circulation assembly, a drum is arranged at the top end of the rack, the drum comprises a fixed shell connected with the rack and a rotary drum body movably connected with an inner cavity of the fixed shell, and the rotary drum body is connected with the rack. A heating gap is formed between the fixed shell and the rotary barrel, electric heating rods are evenly arranged in the heating gap, a scraper is arranged in an inner cavity of the rotary barrel, and the scraper is fixedly connected with the fixed shell. According to the drum-type powder drying equipment, wet powder is heated from the outside and inside at the same time, the drying speed of the wet powder is increased, in the drying process of the wet powder, the wet powder is stirred, raised and cut through the stirring net plate, agglomeration of the wet powder is avoided, the contact area of the wet powder and hot air is increased, and the drying speed of the wet powder is further increased.

Description

Technical Field

[0001] This utility model relates to the field of drying equipment technology, specifically a drum-type powder drying equipment. Background Technology

[0002] A drum-type powder dryer is a device that evaporates moisture from wet materials through the rotation and heating of the drum, thereby achieving drying. In existing technologies, during operation, the wet powder comes into contact with any part of the drum's inner wall. After the moisture evaporates at high temperatures, residual solid particles tend to adhere to the drum's inner wall, increasing its thickness and reducing its heat transfer efficiency, thus affecting the drying efficiency of the wet powder. Simultaneously, the wet powder tends to clump together, reducing its contact area with hot air and further impacting the drying speed. Therefore, this application proposes a drum-type powder dryer. Utility Model Content

[0003] This invention provides a drum-type powder drying device, which solves the problems mentioned in the background art, such as wet powder easily adhering to the inner wall of the drum after drying, affecting the heat transfer efficiency of the drum; wet powder easily agglomerating together, reducing its contact area with hot air, and slow drying speed.

[0004] This utility model provides the following technical solution: a drum-type powder drying device, including a frame and a hot air circulation assembly. A drum is provided at the top of the frame. The drum includes a fixed shell connected to the frame and a rotating cylinder movably connected to the inner cavity of the fixed shell. A heating gap is formed between the fixed shell and the rotating cylinder. Electric heating rods are uniformly arranged in the heating gap. A scraper is provided in the inner cavity of the rotating cylinder. The scraper is fixedly connected to the fixed shell and contacts the inner wall of the rotating cylinder. A stirring and heating structure is movably connected to the middle of the inner cavity of the rotating cylinder. The stirring and heating structure is connected to the air outlet of the hot air circulation assembly through an air inlet pipe. The air inlet of the hot air circulation assembly extends to the top of the inner cavity of the rotating cylinder through a return pipe.

[0005] The stirring and heating structure includes a rotating tube connected to an air inlet pipe and a stirring mesh plate fixedly connected to the outer ring of the rotating tube; the rotating tube includes a connecting tube movably connected to a fixed shell, an inner tube connected to the inner side of the connecting tube, and an outer tube sleeved outside the inner tube. The inner tube and the outer tube are evenly provided with exhaust holes. A vibration motor is provided on the inner tube, and the end of the output shaft of the vibration motor contacts the inner wall of the outer tube.

[0006] Preferably, a rotating ring is movably connected to the top of the frame, the fixed housing is fixedly connected to the inner wall of the rotating ring, and a servo motor is provided on one side of the frame, and the rotating ring is driven by the servo motor.

[0007] Preferably, a bearing assembly is provided below the roller, the bearing assembly includes a hydraulic telescopic rod and a bearing plate fixedly connected to the end of the output shaft of the hydraulic telescopic rod, the bearing plate is adapted to the roller, and a cylinder cover is provided at one end of the roller.

[0008] Preferably, a second servo motor is provided on the fixed housing, and the rotating cylinder is driven by the second servo motor. A third servo motor is provided on one side of the fixed housing, and the connecting pipe is driven by the third servo motor.

[0009] Preferably, the end of the vibration motor away from the outer tube is wrapped with a buffer pad; and the end of the return pipe near the rotating cylinder is provided with a powder filter screen.

[0010] Preferably, the outer surface of the fixed housing is covered with a heat insulation pad, and the inner wall of the fixed housing is provided with a reflective coating.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. This drum-type powder drying equipment uses a scraper to remove the adhering substances on the rotating drum, preventing the solid particles remaining after the wet powder is dried from adhering to the inner wall of the rotating drum, thus ensuring the heat transfer efficiency of the rotating drum and consequently ensuring the heating efficiency of the wet powder.

[0013] 2. This drum-type powder drying equipment heats the wet powder from both the outside and inside, increasing the drying speed. During the drying process, the wet powder is stirred, lifted, and cut by the mixing screen, preventing agglomeration and increasing the contact area between the wet powder and the hot air, further improving the drying speed. Attached Figure Description

[0014] Figure 1 This is a front view of the structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the back of the structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the internal structure of this utility model;

[0017] Figure 4 This is a schematic cross-sectional view of the structure of the roller of this utility model;

[0018] Figure 5 This is a cross-sectional schematic diagram of the stirring and heating structure of this utility model.

[0019] In the diagram: 1. Frame; 2. Rotating ring; 3. Servo motor one; 4. Hydraulic telescopic rod; 5. Bearing plate; 6. Fixed housing; 7. Cylinder cover; 8. Return pipe; 9. Connecting pipe; 10. Air inlet pipe; 11. Hot air circulation assembly; 12. Servo motor three; 13. Rotating cylinder; 14. Scraper; 15. Electric heating rod; 16. Outer pipe; 17. Stirring mesh plate; 18. Servo motor two; 19. Vibration motor; 20. Inner pipe; 21. Buffer pad. Detailed Implementation

[0020] 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.

[0021] This utility model provides an embodiment: Please refer to Figures 1-5 A drum-type powder drying device includes a frame 1 and a hot air circulation assembly 11. A rotating ring 2 is movably connected to the top of the frame 1, and a drum is fixedly connected to the inner cavity of the rotating ring 2. A servo motor 3 is provided on one side of the frame 1. The rotating ring 2 is driven by the servo motor 3. When the servo motor 3 rotates, it can drive the rotating ring 2 to rotate, and the rotating ring 2 drives the drum to rotate, thereby tilting the drum. A cylinder cover 7 is provided at one end of the drum. The cylinder cover 7 can be bolted to the drum. When the cylinder cover 7 is in the open state, it is convenient to add or remove powder from the drum.

[0022] A load-bearing assembly is provided below the roller. The load-bearing assembly includes a hydraulic telescopic rod 4 and a load-bearing plate 5 fixedly connected to the end of the output shaft of the hydraulic telescopic rod 4. The load-bearing plate 5 is adapted to the roller. The extension and retraction of the hydraulic telescopic rod 4 can change the position of the load-bearing plate 5. The load-bearing plate 5 can support the roller and improve the reliability of the roller.

[0023] The roller includes a fixed housing 6 connected to the frame 1 and a rotating cylinder 13 movably connected to the inner cavity of the fixed housing 6. A servo motor 18 is mounted on the fixed housing 6, and the rotating cylinder 13 is driven by the servo motor 18. When the servo motor 18 rotates, it drives the rotating cylinder 13 to rotate. Figure 3 and Figure 4 As shown, a gear is fixedly connected to the end of the output shaft of the second servo motor 18, and a gear ring is fixedly connected to the outer ring of the rotating cylinder 13. The gear meshes with the gear ring. When the second servo motor 18 rotates, it drives the gear connected to it to rotate. The gear drives the rotating cylinder 13 to rotate through the gear ring.

[0024] A heating gap is formed between the fixed shell 6 and the rotating cylinder 13. Electric heating rods 15 are evenly arranged in the heating gap. The heat generated by the electric heating rods 15 when they are working can heat the wet powder in the rotating cylinder 13, which facilitates the drying of the wet powder.

[0025] The outer surface of the fixed housing 6 is covered with a heat insulation pad, which can reduce the influence of the external environment on the temperature inside the equipment. The inner wall of the fixed housing 6 is provided with a reflective coating, which can reflect heat, reduce heat loss, and facilitate the concentration of heat to heat the wet powder. The material of the reflective coating can be set according to the requirements and is not limited here.

[0026] The inner cavity of the rotating cylinder 13 is provided with a scraper 14, which is fixedly connected to the fixed housing 6 and contacts the inner wall of the rotating cylinder 13. When the rotating cylinder 13 rotates, the scraper 14 can scrape off the adhering material on the rotating cylinder 13, ensuring the heat transfer efficiency of the rotating cylinder 13, and thus ensuring the heating efficiency of the wet powder.

[0027] A stirring and heating structure is movably connected to the middle of the inner cavity of the rotating cylinder 13. This structure is connected to the outlet of the hot air circulation assembly 11 via an air inlet pipe 10. The air inlet of the hot air circulation assembly 11 extends to the top of the inner cavity of the rotating cylinder 13 via a return pipe 8. With the hot air circulation assembly 11 in place, when the circulating fan operates, hot air is blown into the inner cavity of the stirring and heating structure through the air inlet pipe 10. Moisture inside the rotating cylinder 13 can enter the hot air circulation assembly 11 through the return pipe 8, facilitating the recovery of heat from the moisture. The hot air circulation assembly 11 is existing technology, based on forced convection heating technology. Through the coordinated operation of components such as the fan, heater, and air duct, it achieves the circulation and uniform heating of hot air. The specific structure is not described in detail here. A powder filter screen is installed at the end of the return pipe 8 near the rotating cylinder 13 to prevent powder from entering the hot air circulation assembly 11.

[0028] The stirring and heating structure includes a rotating tube connected to the air inlet pipe 10 and a stirring mesh plate 17 fixedly connected to the outer ring of the rotating tube. The rotating tube includes a connecting pipe 9 movably connected to the fixed housing 6, an inner tube 20 connected to the inner side of the connecting pipe 9, and an outer tube 16 sleeved outside the inner tube 20. The inner tube 20 and the outer tube 16 are evenly provided with exhaust holes. Through the exhaust holes, the hot air entering the stirring and heating structure can be evenly discharged into the inner cavity of the rotating cylinder 13 to achieve heating of the wet powder.

[0029] As described above, the drying equipment heats the wet powder material from both the outside and inside simultaneously during use, thereby increasing the drying speed of the wet powder material. Furthermore, during the drying process, the wet powder material is stirred, lifted, and cut using the stirring mesh plate 17, which prevents the wet powder material from agglomerating, increases the contact area between the wet powder material and the hot air, and further improves the drying speed of the wet powder material.

[0030] A vibration motor 19 is installed on the inner tube 20. The output shaft end of the vibration motor 19 contacts the inner wall of the outer tube 16. The end of the vibration motor 19 away from the outer tube 16 is wrapped with a buffer pad 21. Through the installation of the vibration motor 19, the vibration generated by the vibration motor 19 can be transmitted to the mixing screen plate 17 through the outer tube 16, which facilitates the separation of powder from the mixing screen plate 17 and reduces the probability of clogging of the mixing screen plate 17.

[0031] A servo motor 312 is provided on one side of the fixed housing 6. The connecting pipe 9 is driven by the servo motor 312. The operation of the servo motor 312 can drive the connecting pipe 9 to rotate. The connecting pipe 9 drives the outer pipe 16 to rotate through the inner pipe 20. The outer pipe 16 can drive the mixing screen plate 17 to rotate, which facilitates the mixing screen plate 17 to stir, lift and cut the material.

[0032] All electrical components involved in this application are prior art. Those skilled in the art understand their connection methods. With the help of those skilled in the art, all electrical components in this application and their compatible power supplies can be connected by wires. According to the actual situation, a suitable controller can be selected to meet the control requirements. For specific connections and control sequences, please refer to the description below. The electrical connection between each electrical component is completed in the order of operation. The detailed connection methods are well known in the art. The following mainly introduces the working principle and process, and will not describe the electrical control.

[0033] In summary: When using this drum-type powder drying equipment, the wet powder is placed inside the drum cavity. Servo motor 2 18 drives the rotating drum 13 to rotate, which in turn drives the wet powder to rotate. Servo motor 3 12 drives the connecting pipe 9 to rotate, and the connecting pipe 9 drives the outer pipe 16 to rotate through the inner pipe 20. The outer pipe 16 can drive the stirring screen 17 to rotate, which can stir, lift, and cut the wet powder, preventing it from agglomerating and increasing the contact area between the wet powder and the hot air, thereby improving the drying speed. During the drying process, the heat generated by the electric heating rod 15 when it is energized heats the wet powder from the outside. The hot air generated by the hot air circulation component 11 when it is working is injected into the inner cavity of the rotating drum 13 through the air inlet pipe 10, connecting pipe 9, inner pipe 20, outer pipe 16, and exhaust port, heating the wet powder from the inside and further improving the drying speed. After the wet powder is dried, the user opens the cylinder cover 7 and tilts the roller using the servo motor 3, allowing the dried powder to be discharged.

[0034] All standard parts used in this utility model can be purchased from the market, and irregularly shaped parts can be customized according to the description and drawings. The specific connection methods of each part all adopt conventional means such as bolts that are mature in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art. Although the embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. A drum-type powder drying apparatus comprising a frame (1) and a hot air circulation assembly (11), characterized in that: The top end of the rack (1) is provided with a roller, the roller comprises a fixed shell (6) connected with the rack (1) and a rotating cylinder (13) movably connected with the inner cavity of the fixed shell (6), a heating gap is formed between the fixed shell (6) and the rotating cylinder (13), and the heating gap is uniformly provided with an electric heating rod (15). The inner cavity of the rotating cylinder (13) is provided with a scraper (14), the scraper (14) is fixedly connected with the fixed shell (6), and the scraper (14) is in contact with the inner wall of the rotating cylinder (13). The middle part of the inner cavity of the rotating cylinder (13) is movably connected with a stirring and heating structure, the stirring and heating structure is connected with the air outlet end of a hot air circulation assembly (11) through an air inlet pipe (10), and the air inlet end of the hot air circulation assembly (11) extends to the top end of the inner cavity of the rotating cylinder (13) through a backflow pipe (8). The stirring and heating structure comprises a rotating pipe connected with the air inlet pipe (10) and a stirring mesh plate (17) fixedly connected with the outer circle of the rotating pipe. The rotating pipe comprises a connecting pipe (9) movably connected with the fixed shell (6), an inner pipe (20) connected with the inner side of the connecting pipe (9), and an outer pipe (16) sleeved on the outer side of the inner pipe (20). The inner pipe (20) and the outer pipe (16) are uniformly provided with exhaust holes. The inner pipe (20) is provided with a vibration motor (19), and the output shaft end of the vibration motor (19) is in contact with the inner wall of the outer pipe (16).

2. A drum-type powder drying apparatus according to claim 1, characterized in that: The top end of the rack (1) is movably connected with a rotating ring (2), the inner wall of the fixed shell (6) is fixedly connected with the rotating ring (2), and one side of the rack (1) is provided with a servo motor (3). The rotating ring (2) is driven by the servo motor (3).

3. A drum-type powder drying apparatus according to claim 1, characterized in that: A bearing assembly is arranged below the roller, the bearing assembly comprises a hydraulic telescopic rod (4) and a bearing plate (5) fixedly connected with the output shaft end of the hydraulic telescopic rod (4), the bearing plate (5) is matched with the roller, and one end of the roller is provided with a cylinder cover (7).

4. A drum-type powder drying apparatus according to claim 1, characterized in that: A servo motor (18) is arranged on the fixed shell (6), the rotating cylinder (13) is driven by the servo motor (18), and a servo motor (12) is arranged on one side of the fixed shell (6). The connecting pipe (9) is driven by the servo motor (12).

5. A drum-type powder drying apparatus according to claim 1, characterized in that: The end of the vibration motor (19) away from the outer pipe (16) is wrapped with a buffer pad (21), and the end of the backflow pipe (8) close to the rotating cylinder (13) is provided with a powder filter screen.

6. A drum-type powder drying apparatus according to claim 1, characterized in that: The outer surface of the fixed shell (6) is wrapped with a heat insulation pad, and the inner wall of the fixed shell (6) is provided with a reflective coating.

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