Powder drying device
By using a powder drying device that simultaneously stirs and heats in a vacuum environment, combined with a weighing device and a stirring mechanism, the problems of inaccurate powder drying efficiency and weight control are solved, achieving a highly efficient and safe powder drying process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-10
- Publication Date
- 2026-03-10
AI Technical Summary
Existing powder drying equipment requires additional filtration devices to prevent powder from being blown away, and the drying efficiency and weight control are not precise.
A powder drying device that uses a vacuum environment for simultaneous stirring and heating, combined with a weighing device and a stirring mechanism, utilizes the low temperature of the vacuum environment to evaporate moisture, and reduces heat loss through a heating mechanism and insulation layer, while using a spiral stirring rod and scraper to prevent powder from sticking together.
It improves powder drying efficiency and weight control accuracy, reduces energy consumption and safety risks, reduces powder adhesion and dusting, and achieves a highly efficient and safe powder drying process.
Smart Images
Figure CN223985502U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to powder processing technical field especially relates to a powder drying device. BACKGROUND
[0002] The powder drying device is a kind of mechanical equipment using heat energy to reduce the moisture content of powder, for drying treatment to powder, to reduce the moisture content in powder, so that powder can be smoothly applied in subsequent processing steps.At present, powder drying device mostly uses hair dryer to blow the heat generated by heating device into drying cylinder, so that the temperature in drying cylinder rises, and the moisture in powder evaporates.But this drying device often needs additional filter device to avoid powder flying and escaping from drying cylinder. SUMMARY
[0003] To overcome the above-mentioned shortcomings, the utility model discloses a kind of powder drying device, the drying efficiency of powder is high, and the weight of powder can be accurately controlled simultaneously.
[0004] To achieve the above purpose, the utility model adopts the technical scheme that a kind of powder drying device includes:
[0005] Support, the support is provided with a weighing apparatus on it;
[0006] Drying cylinder, the drying cylinder is arranged on the weighing apparatus, the drying cylinder forms a sealed cavity, the drying cylinder is provided with suction hole communicated with the sealed cavity, and the suction hole is connected with external vacuum generator;
[0007] Heating mechanism, the heating mechanism is wrapped outside the drying cylinder, and the heating mechanism is used for the heating of the drying cylinder;
[0008] Stirring mechanism, the stirring mechanism includes stirring assembly in the sealed cavity, and the stirring assembly can stir powder in the sealed cavity.
[0009] The utility model has the beneficial effects that:
[0010] Increase the weighing apparatus, the quality of powder can be monitored, to dry powder of specified weight, or dry powder of specified weight;
[0011] Heating and stirring to powder, can improve the efficiency of powder drying, so that the moisture in powder evaporates quickly;
[0012] By using an air extraction port, the powder is stirred and heated simultaneously in a vacuum environment. In this vacuum, moisture evaporates at lower temperatures, reducing energy consumption and lowering drying costs. The vacuum environment also reduces resistance during evaporation, increasing drying speed. Furthermore, the low oxygen concentration in a vacuum environment makes the powder less likely to burn, thus improving safety.
[0013] Furthermore, the heating mechanism includes a shell sleeved outside the side wall of the drying cylinder, forming a heating cavity between the shell and the drying cylinder. A heating element, encased in the drying cylinder, is disposed within the heating cavity. The shell protects the heating element and reduces heat loss, thus keeping the drying cylinder warm.
[0014] Furthermore, the heating mechanism also includes a heat insulation layer located between the housing and the heating element. This insulation layer surrounds the heating element, reducing heat loss and effectively maintaining the temperature of the drying cylinder.
[0015] Furthermore, the stirring assembly includes a rotating rod coaxial with the drying cylinder, and stirring rods are spirally distributed on the outer periphery of the rotating rod along its axial direction. The multiple stirring rods spirally distributed along the axial direction on the outer periphery of the rotating rod allow the stirring rods to maximize the lifting of the powder, preventing it from sticking together and ensuring thorough and uniform mixing.
[0016] Furthermore, a scraper is provided at the end of the stirring rod away from the rotating rod. The scraper has a large contact area with the powder, which can lift the powder to a greater extent and scrape off the powder adhering to the inner wall of the drying cylinder, thus preventing the powder from sticking to the inner wall of the drying cylinder.
[0017] Furthermore, the stirring mechanism includes a driving component and two bearings. The two bearings are respectively fixed at both ends of the drying cylinder. A sealing component is provided between the bearings and the drying cylinder. The two ends of the rotating rod pass through the drying cylinder and are inserted into the bearings. The driving component is fixed on the drying cylinder and fixedly connected to one end of the rotating rod.
[0018] Furthermore, the evacuation port is located at the upper end of the drying cylinder. After the powder enters the drying cylinder, a vacuum is drawn from above to prevent the powder from being extracted. The upper end of the drying cylinder also has a feed inlet, and the lower end has a discharge outlet. The powder can enter the drying cylinder through the feed inlet under gravity and exit through the discharge outlet.
[0019] Furthermore, the weighing device is provided in a rectangular arrangement, with a support frame fixed to each weighing device, and the drying cylinder is supported on the support frame. In this configuration, the four weighing devices are evenly stressed, allowing for accurate detection of the weight of the powder inside the drying cylinder.
[0020] Furthermore, the powder heating mechanism also includes a sensor for collecting temperature and humidity data within the sealed cavity. By monitoring the temperature and humidity within the sealed cavity in real time, the powder is dried under set conditions.
[0021] Furthermore, the drying cylinder is equipped with an observation window. Attached Figure Description
[0022] Figure 1 This is a three-dimensional structural diagram of an embodiment of the present utility model;
[0023] Figure 2 This is a cross-sectional view of an embodiment of the present invention along the axis of the rotating rod in the vertical direction;
[0024] Figure 3 This is a cross-sectional view of an embodiment of the present invention, perpendicular to the axis of the rotating rod in the vertical direction.
[0025] In the picture:
[0026] 1. Support frame; 2. Drying cylinder; 21. Sealed cavity; 22. Air extraction port; 23. Feed inlet; 24. Discharge outlet; 3. Heating mechanism; 31. Housing; 32. Heating element; 33. Sensor; 4. Stirring mechanism; 41. Rotating rod; 42. Stirring rod; 43. Scraper; 44. Drive component; 45. Bearing; 46. Seal; 5. Weighing device; 51. Support frame. Detailed Implementation
[0027] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.
[0028] It should be noted that in the description of this utility model, terms such as "upper," "lower," "left," "right," "front," and "rear," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0029] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "set," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0030] This utility model discloses a powder drying device for drying powders.
[0031] See appendix Figure 1 As shown, the powder drying device includes a support 1, a drying cylinder 2, a heating mechanism 3, and a stirring mechanism 4. The support 1 supports the drying cylinder 2, the drying cylinder 2 is used to load the powder, the heating mechanism 3 is used to heat the powder, and the stirring mechanism 4 is used to stir the powder. In this embodiment, heating and stirring the powder simultaneously improves the drying efficiency and allows the moisture in the powder to evaporate quickly.
[0032] See appendix Figure 2 As shown, a weighing device 5 is installed on the support 1, and the drying cylinder 2 is mounted on the weighing device 5. By adding the weighing device 5, the quality of the powder can be monitored in real time, so as to dry a specified weight of powder or dry a specified weight of powder. The drying cylinder 2 forms a sealed cavity 21, and the drying cylinder 2 is provided with an exhaust port 22 that communicates with the sealed cavity 21. The exhaust port 22 is connected to an external vacuum generator. At this time, the addition of the exhaust port 22 to the drying cylinder 2 allows for vacuuming of the sealed cavity 21, allowing the powder to dry under a vacuum ring. The vacuum generator can also be opened intermittently during the drying process to remove moisture in time. The heating mechanism 3 is wrapped around the drying cylinder 2. The heating mechanism 3 is used to heat the drying cylinder 2. The heating mechanism 3 directly heats the drying cylinder 2 without blowing hot air toward the sealed cavity 21, thus preventing the powder from being blown away.
[0033] In this embodiment, the powder is stirred and heated simultaneously in a vacuum environment through the evacuation port 22. In a vacuum environment, moisture can evaporate at a lower temperature, reducing energy consumption and lowering drying costs. The vacuum environment also reduces resistance during the evaporation process, increasing the drying speed. Furthermore, the low oxygen concentration in a vacuum environment makes the powder less likely to burn, thus improving safety.
[0034] See appendix Figure 2 and attached Figure 3 As shown, the stirring mechanism 4 includes a stirring assembly located within the sealed cavity 21, which can stir the powder within the sealed cavity 21. Stirring the powder while heating ensures uniform heating, accelerates moisture evaporation, and improves the drying effect.
[0035] The stirring assembly includes a rotating rod 41 coaxial with the drying cylinder 2. Stirring rods 42 are spirally distributed along the outer periphery of the rotating rod 41. The rotating rod 41 is rotatable along its own axis and is rotatably connected to the drying cylinder 2. When the rotating rod 41 rotates, it drives the stirring rods 42 to move synchronously. The axis of the stirring rods 42 is perpendicular to the axis of the rotating rod 41, but multiple stirring rods 42 are spirally distributed along the axial direction on the outer periphery of the rotating rod 41. This arrangement allows the stirring rods 42 to maximize the lifting of the powder during stirring, preventing the powder from sticking together and ensuring thorough and uniform mixing.
[0036] In one embodiment, a scraper 43 is provided at the end of the stirring rod 42 away from the rotating rod 41. The extension direction of the scraper 43 is perpendicular to the stirring axis. The scraper 43 can contact the inner wall of the drying cylinder 2. The scraper 43 has a large contact area with the powder, which can lift the powder to a greater extent and scrape off the powder adhering to the inner wall of the drying cylinder 2, thus preventing the powder from sticking to the inner wall of the drying cylinder 2.
[0037] See appendix Figure 2 As shown, the stirring mechanism 4 includes a drive component 44 and two bearings 45. The two bearings 45 are respectively fixed to both ends of the drying cylinder 2, that is, fixed to the end plates of the drying cylinder 2. A sealing component 46 is provided between the bearings 45 and the end plates of the drying cylinder 2. The two ends of the rotating rod pass through the drying cylinder 2 and are inserted into the bearings 45. Because the powder needs to be sealed properly when drying in the drying cylinder 2 to prevent the powder from leaking out of the drying cylinder 2, a sealing component 46 is provided between the bearings 45 and the end plates. The sealing component 46 plays a sealing role to prevent the powder from overflowing from the gap between the rotating rod and the end plates.
[0038] The driving component 44 is fixed on the drying cylinder 2 and fixedly connected to one end of the rotating rod. The driving component 44 is a geared motor that directly drives the rotating rod to rotate.
[0039] See appendix Figure 2 and attached Figure 3 As shown, the heating mechanism 3 includes a housing 31 sleeved outside the side wall of the drying cylinder 2, forming a heating cavity between the housing 31 and the drying cylinder 2. A heating element 32, which is wrapped around the drying cylinder 2, is disposed within the heating cavity. The housing protects the heating element 32, which can be a heating wire or a heating plate, etc., and only needs to be able to heat within the heating cavity.
[0040] The heating mechanism 3 also includes a heat insulation layer located between the housing 31 and the heating element 32. The heat insulation layer is heat insulation cotton, which is wrapped around the heating element 32 to reduce heat diffusion and effectively keep the drying cylinder 2 warm.
[0041] The heating mechanism 3 also includes a sensor 33, which is a temperature and humidity sensor used to collect the temperature and humidity inside the sealed cavity 21. When the temperature detected by the sensor 33 is greater than or less than the set temperature, the temperature inside the sealed cavity 21 can be adjusted by adjusting the power of the heating element 32. When the sensor 33 detects that the humidity meets the requirements, the powder drying process is complete.
[0042] The drying cylinder 2 has a fixed cavity that communicates with the sealed cavity 21, and the sensor 33 is fixed in the fixed cavity.
[0043] See appendix Figure 2 As shown, the evacuation port 22 is located at the upper end of the drying cylinder 2. After the powder enters the drying cylinder 2, a vacuum is drawn from above to prevent the powder from being extracted. The upper end of the drying cylinder 2 is also provided with a feed inlet 23, and the lower end of the drying cylinder 2 is provided with a discharge outlet 24. At this time, the powder can enter the drying cylinder 2 from the feed inlet 23 under the action of gravity and leave the drying cylinder 2 from the discharge outlet 24.
[0044] The drying cylinder 2 is equipped with an observation window, through which the operator can observe the drying status of the powder.
[0045] Four weighing devices 5 are provided, arranged in a rectangular pattern. Each weighing device is fixed with a support frame 51, and the drying cylinder 2 is supported on the support frame 51. At this time, the four weighing devices 5 are subjected to uniform force, which can accurately detect the weight of the powder in the drying cylinder 2.
[0046] The above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it. They cannot be used to limit the protection scope of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be covered within the protection scope of this utility model.
Claims
1. A powder drying apparatus, characterized by: The application relates to a drying device. The drying device comprises: a support provided with a weighing device; a drying cylinder arranged on the weighing device, the drying cylinder forming a sealed cavity, the drying cylinder being provided with an air exhaust hole communicated with the sealed cavity, the air exhaust hole being connected with an external vacuum generator; a heating mechanism wrapped outside the drying cylinder, the heating mechanism being used for heating the drying cylinder; 2. The powder drying apparatus according to claim 1, characterized in that: a stirring mechanism comprising a stirring assembly arranged in the sealed cavity, the stirring assembly being capable of stirring powder in the sealed cavity.
3. The powder drying apparatus of claim 2, wherein: The heating mechanism comprises a shell wrapped outside the side wall of the drying cylinder, a heating cavity being formed between the shell and the drying cylinder, and a heating element wrapped outside the drying cylinder being arranged in the heating cavity.
4. The powder drying apparatus of claim 1, wherein: The heating mechanism further comprises a heat preservation layer arranged between the shell and the heating element.
5. The powder drying apparatus of claim 4, wherein: The stirring assembly comprises a rotating rod coaxial with the drying cylinder, and stirring rods spirally arranged on the outer circumferential part of the rotating rod along the axial direction of the rotating rod.
6. The powder drying apparatus of claim 4, wherein: The stirring rods are provided with scrapers at the ends away from the rotating rod.
7. The powder drying apparatus of claim 1, wherein: The stirring mechanism comprises a driving element and two bearings, the two bearings being fixed at the two ends of the drying cylinder, a sealing element being arranged between the bearings and the drying cylinder, the two ends of the rotating rod penetrating the drying cylinder and being inserted into the bearings, and the driving element being fixed on the drying cylinder and being fixedly connected with one end of the rotating rod.
8. The powder drying apparatus of claim 1, wherein: The air exhaust hole is arranged at the upper end of the drying cylinder, the upper end of the drying cylinder is further provided with a feeding port, and the lower end of the drying cylinder is provided with a discharging port.
9. The powder drying apparatus of claim 1, wherein: The weighing device is provided with four weighing devices, the four weighing devices being distributed in a rectangular shape, the weighing device being fixed with a bearing frame, and the drying cylinder being borne on the bearing frame.
10. The powder drying apparatus of claim 1, wherein: The heating mechanism further comprises a sensor used for collecting the temperature and humidity in the sealed cavity. The drying cylinder is provided with an observation window.