A gypsum powder airflow drying device
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-04
- Publication Date
- 2026-08-14
AI Technical Summary
[0002]在石膏粉生产加工领域，干燥是保障产品质量与后续使用性能的关键环节，当前市面上的石膏粉干燥设备多存在加热不均匀问题，传统电加热方式常导致干燥罐局部温度过高，易造成石膏粉结块或干燥不彻底，影响产品品质，同时多数设备进风系统缺乏有效过滤装置，外界空气中的粉尘、杂质及异味易随气流进入干燥罐，污染石膏粉，尤其在对纯度要求较高的建筑、医疗等领域，该问题更为突出，此外，现有设备的搅拌与气流结合效果不佳，石膏粉与热空气接触面积有限，干燥效率低，且干燥后石膏粉与气流的分离需额外人工操作，不仅增加人力成本，还易造成物料损耗，难以满足规模化生产对高效、洁净、低成本干燥的需求，给人们的使用过程带来了一定的不利影响，为了解决现有技术的不足，我们提出一种石膏粉气流干燥设备
该石膏粉气流干燥设备，通过设置的螺旋状电加热管与保温固定筒配合，能对干燥罐进行均匀加热且减少热量散失，同时进风管道内双层金属滤网加活性炭吸附层的过滤网，可有效过滤空气中杂质与异味，避免污染石膏粉，热空气经连接管进入转动筒再通过空心搅拌杆的出气通孔排出，结合转动的空心搅拌杆对石膏粉的搅拌，大幅提升石膏粉与热空气的接触面积和均匀度，显著加快水分蒸发效率，保障石膏粉干燥质量与效率。
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Figure CN224635725U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of airflow drying equipment technology, and in particular to an airflow drying equipment for gypsum powder. Background Technology
[0002] In the field of gypsum powder production and processing, drying is a crucial step in ensuring product quality and subsequent performance. Currently, most gypsum powder drying equipment on the market suffers from uneven heating. Traditional electric heating methods often lead to excessively high local temperatures in the drying tank, causing gypsum powder to clump or be incompletely dried, affecting product quality. At the same time, most equipment lacks an effective filtration device in the air intake system, allowing dust, impurities, and odors from the outside air to easily enter the drying tank with the airflow, contaminating the gypsum powder. This problem is particularly prominent in fields with high purity requirements, such as construction and medical applications. Furthermore, the existing equipment has poor mixing and airflow integration, resulting in limited contact area between the gypsum powder and hot air, leading to low drying efficiency. Moreover, the separation of the gypsum powder from the airflow after drying requires additional manual operation, increasing labor costs and easily causing material loss. This makes it difficult to meet the demands of large-scale production for efficient, clean, and low-cost drying, negatively impacting the user experience. To address the shortcomings of existing technologies, we propose a gypsum powder airflow drying device. Utility Model Content
[0003] The main objective of this invention is to provide a gypsum powder airflow drying device that can effectively solve the problems in the background art.
[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A gypsum powder airflow drying device includes a drying tank. A fixed cylinder is fixedly connected to the outer surface of the drying tank. A feed pipe is fixedly connected to the top of the drying tank, and a sealing cover is provided above the feed pipe. An electric heating tube is wound between the fixed cylinder and the drying tank, and one end of the electric heating tube extends from one side of the fixed cylinder and is connected to a connecting wire. An air inlet pipe is fixedly connected to one side of the fixed cylinder, and a filter screen and a fan are detachably connected inside the air inlet pipe. A connecting pipe is fixedly connected to the top of the fixed cylinder. A support frame is fixedly connected to the top of the drying tank. A servo motor is detachably connected to the upper end of the support frame, and a rotating rod is detachably connected to the output shaft of the servo motor. A gear is fixedly connected to the outer surface of the rotating rod, and a gear ring meshes with one side of the gear. A rotating cylinder is fixedly connected to the inner ring of the gear ring. A fixed ring is fixedly connected to the outer surface of the rotating cylinder, and multiple ball bearings are rolled between the fixed ring and the upper inner cavity of the drying tank. Multiple hollow stirring rods are fixedly connected to the outer surface of the rotating cylinder. A discharge pipe is fixedly connected to the top of the drying tank, and a cyclone separator is fixedly connected to the other end of the discharge pipe.
[0005] Preferably, the air inlet end of the air inlet duct faces away from the fixed cylinder, and the filter screen is located on the side of the fan close to the air inlet end of the air inlet duct. The filter screen is a double-layer metal filter screen structure, with an activated carbon adsorption layer filling between the two filter screens.
[0006] Preferably, the fixing ring is fixedly connected to the outer surface of the rotating cylinder, the upper inner cavity of the drying tank is provided with an annular groove adapted to the fixing ring, the ball bearings are rolled and embedded in the annular groove, and a number of ball bearings are evenly distributed along the circumference of the fixing ring, and a number of air outlet holes are provided on the surface of the hollow stirring rod.
[0007] Preferably, the servo motor is detachably connected to the support frame by bolts, the rotating rod is fixedly connected to the output shaft of the servo motor by a coupling, the gear is keyed to the rotating rod, and the module of the gear is the same as the module of the gear ring.
[0008] Preferably, the electric heating tube is spirally wound around the outer surface of the drying tank, and a gap is left between the electric heating tube and the outer surface of the drying tank. The fixed cylinder is an insulation cylinder structure, and its inner wall is fixedly connected with a rock wool insulation layer.
[0009] Compared with the prior art, the present invention has the following beneficial effects: This gypsum powder airflow drying equipment, through the combination of a spiral electric heating tube and an insulated fixing cylinder, can uniformly heat the drying tank while reducing heat loss. At the same time, the double-layer metal filter screen with activated carbon adsorption layer in the air inlet duct can effectively filter impurities and odors in the air, preventing contamination of the gypsum powder. Hot air enters the rotating cylinder through the connecting pipe and is discharged through the air outlet of the hollow stirring rod. Combined with the stirring of the gypsum powder by the rotating hollow stirring rod, the contact area and uniformity between the gypsum powder and the hot air are greatly improved, significantly accelerating the moisture evaporation efficiency and ensuring the drying quality and efficiency of the gypsum powder.
[0010] This gypsum powder airflow drying equipment uses a gear and gear ring drive to rotate the drum. Combined with a rolling connection structure of a fixed ring and balls, it effectively reduces frictional resistance during drum rotation. This not only makes the hollow stirring rod operate more smoothly but also reduces component wear and extends equipment lifespan. Furthermore, the dried gypsum powder enters a cyclone separator through a discharge pipe for gas-solid separation, eliminating the need for additional manual separation operations. This simplifies the drying process, reduces labor costs, and improves gypsum powder collection rates, enhancing the overall practicality and economy of the equipment. Attached Figure Description
[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of the drying tank and the fixed cylinder of this utility model; Figure 3This is the utility model Figure 2 Schematic diagram of the structure at point A in the middle; Figure 4 This is a partial structural schematic diagram of the present invention.
[0012] In the diagram: 1. Drying tank; 2. Fixed cylinder; 3. Feed pipe; 4. Sealing cover; 5. Electric heating element; 6. Connecting wire; 7. Air inlet pipe; 8. Filter screen; 9. Fan; 10. Connecting pipe; 11. Support frame; 12. Servo motor; 13. Rotating rod; 14. Gear; 15. Gear ring; 16. Rotating cylinder; 17. Fixed ring; 18. Ball bearing; 20. Hollow stirring rod; 21. Discharge pipe; 22. Cyclone separator. Detailed Implementation
[0013] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.
[0014] Example 1, as Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, a gypsum powder airflow drying device includes a drying tank 1. A fixed cylinder 2 is fixedly connected to the outer surface of the drying tank 1. A feed pipe 3 for inputting gypsum powder is fixedly connected to the top of the drying tank 1. An openable sealing cover 4 is closed on the top of the feed pipe 3 to achieve sealing after feeding. A spiral electric heating tube 5 is wound in the gap between the fixed cylinder 2 and the drying tank 1. A certain gap is left between the electric heating tube 5 and the outer surface of the drying tank 1. One end of the electric heating tube 5 passes through one side of the fixed cylinder 2 and is connected to a connecting wire 6 for connecting to a power source. The fixed cylinder 2 is an insulation cylinder structure with a rock wool insulation layer fixedly connected to its inner wall. An air inlet pipe 7 is fixedly connected to one side of the fixed cylinder 2. A filter screen 8 and a fan 9 are detachably connected in sequence along the air inlet direction in the air inlet pipe 7. The filter screen 8 is a double-layer metal filter structure with an activated carbon adsorption layer filled between the two layers of filter screen. The air inlet end of the air inlet pipe 7 faces away from the fixed cylinder 2. A connecting pipe for connecting the fixed cylinder 2 and the inside of the drying tank 1 is fixedly connected to the top of the fixed cylinder 2. The top of the drying tank 1 is fixedly connected to the connecting pipe 10 and the support frame 11. The upper end of the support frame 11 is detachably connected to the servo motor 12 by bolts. The output shaft of the servo motor 12 is fixedly connected to the rotating rod 13 by a coupling. The outer surface of the rotating rod 13 is connected to the gear 14 by a key. The gear 14 is meshed with a gear ring 15 of the same module on one side. The inner ring of the gear ring 15 is fixedly connected to the rotating cylinder 16. The outer surface of the rotating cylinder 16 is fixedly connected to the fixing ring 17. The upper inner cavity of the drying tank 1 has an annular groove that matches the fixing ring 17. Multiple balls 18 are rolled and embedded in the annular groove and are evenly distributed along the circumference of the fixing ring 17. The fixing ring 17 and the balls 18 are in rolling contact. Multiple hollow stirring rods 20 for stirring gypsum powder are fixedly connected to the outer surface of the rotating cylinder 16. Several air outlet holes are opened on the surface of the hollow stirring rods 20. The top of the drying tank 1 is fixedly connected to the discharge pipe 21. The other end of the discharge pipe 21 is fixedly connected to the cyclone separator 22 for separating the dried gypsum powder from the airflow.
[0015] It should be noted that this utility model is a gypsum powder airflow drying device. In use, first open the sealing cover 4, add the gypsum powder to be dried into the drying tank 1 through the feed pipe 3, then close the sealing cover 4. Connect the electric heating tube 5 to the power supply through the connecting wire 6. The electric heating tube 5 begins to heat up and heats the drying tank 1. The rock wool insulation layer on the inner wall of the fixed cylinder 2 reduces heat loss. Simultaneously, start the fan 9 in the air inlet pipe 7. Outside air enters the fixed cylinder 2 after being filtered by the filter screen 8. The hot air heated by the electric heating tube 5 enters the rotating cylinder 16 through the connecting pipe 10. Then, start the servo motor 12 on the support frame 11. The output shaft of the servo motor 12 drives the rotating rod 13 to rotate. The rotating rod 13 drives the gear 14 to rotate through a key connection. The gear 14 meshes and drives the gear ring 15 to rotate, which in turn drives the rotating cylinder 16 to rotate. The fixed ring 17 on the outer surface of the rotating cylinder 16 rolls on the ball bearing 18 in the annular groove of the drying tank 1, reducing the frictional resistance when the rotating cylinder 16 rotates. While the rotating cylinder 16 rotates, it drives the multiple hollow stirring rods 20 on its outer surface to rotate. During rotation, the hot air entering through the connecting pipe 10 will be dispersed into the multiple hollow stirring rods 20 through the rotating cylinder 16, and then discharged into the drying tank 1 through the multiple air outlet holes on the surface of the hollow stirring rods 20. The hollow stirring rods 20 stir the gypsum powder in the drying tank 1, allowing the gypsum powder to fully contact the hot air, accelerating the evaporation of moisture in the gypsum powder. After the gypsum powder is dried, the dried gypsum powder will enter the cyclone separator 22 through the discharge pipe 21 under the action of the airflow. After being separated by the cyclone separator 22, the gypsum powder is collected, and the airflow is discharged, completing the airflow drying operation of the gypsum powder.
[0016] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A gypsum powder airflow drying device, comprising a drying tank (1), characterized in that: A fixed cylinder (2) is fixedly connected to the outer surface of the drying tank (1). A feed pipe (3) is fixedly connected to the top of the drying tank (1), and a sealing cover (4) is provided above the feed pipe (3). An electric heating tube (5) is wound between the fixed cylinder (2) and the drying tank (1), and one end of the electric heating tube (5) passes through one side of the fixed cylinder (2) and is connected to a connecting wire (6). An air inlet pipe (7) is fixedly connected to one side of the fixed cylinder (2), and a filter screen (8) and a fan (9) are detachably connected inside the air inlet pipe (7). A connecting pipe (10) is fixedly connected to the top of the fixed cylinder (2), and a support frame (11) is fixedly connected to the top of the drying tank (1). A servo motor is detachably connected to the upper end of the support frame (11). The machine (12) is detachably connected to the output shaft of the servo motor (12) with a rotating rod (13). A gear (14) is fixedly connected to the outer surface of the rotating rod (13). A gear ring (15) meshes with one side of the gear (14). A rotating cylinder (16) is fixedly connected to the inner ring of the gear ring (15). A fixing ring (17) is fixedly connected to the outer surface of the rotating cylinder (16). Multiple balls (18) are rolled between the fixing ring (17) and the upper inner cavity of the drying tank (1). Multiple hollow stirring rods (20) are fixedly connected to the outer surface of the rotating cylinder (16). A discharge pipe (21) is fixedly connected to the top of the drying tank (1). A cyclone separator (22) is fixedly connected to the other end of the discharge pipe (21).
2. The gypsum powder airflow drying equipment according to claim 1, characterized in that: The air inlet end of the air inlet duct (7) faces away from the fixed cylinder (2), and the filter screen (8) is located on the side of the fan (9) close to the air inlet end of the air inlet duct (7). The filter screen (8) is a double-layer metal filter structure, and an activated carbon adsorption layer is filled between the two layers of filter screen.
3. The gypsum powder airflow drying equipment according to claim 1, characterized in that: The fixed ring (17) is fixedly connected to the outer surface of the rotating cylinder (16). The upper inner cavity of the drying tank (1) is provided with an annular groove that matches the fixed ring (17). The ball (18) is rolled and embedded in the annular groove, and several balls (18) are evenly distributed along the circumference of the fixed ring (17). Several air outlet holes are provided on the surface of the hollow stirring rod (20).
4. The gypsum powder airflow drying equipment according to claim 1, characterized in that: The servo motor (12) is detachably connected to the support frame (11) by bolts. The rotating rod (13) is fixedly connected to the output shaft of the servo motor (12) by a coupling. The gear (14) is connected to the rotating rod (13) by a key, and the module of the gear (14) is the same as the module of the gear ring (15).
5. The gypsum powder airflow drying equipment according to claim 1, characterized in that: The electric heating tube (5) is spirally wound around the outer surface of the drying tank (1), and there is a gap between the electric heating tube (5) and the outer surface of the drying tank (1). The fixed cylinder (2) is a heat-insulating cylinder structure, and its inner wall is fixedly connected with a rock wool insulation layer.