Powdered material drying oven
By integrating hot air drying and grinding functions into a powder material drying box, the problem of low processing efficiency of existing equipment has been solved, achieving efficient drying and grinding of modified magnesium hydroxide and improving the uniformity and quality of the product.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ANHUI YUYUAN NEW MATERIAL TECHNOLOGY CO LTD
- Filing Date
- 2025-08-21
- Publication Date
- 2026-07-24
AI Technical Summary
Existing powdered material drying equipment cannot simultaneously achieve efficient drying and thorough grinding, resulting in low processing efficiency of modified magnesium hydroxide and easy to affect product quality due to residual moisture or clumping.
By integrating hot air drying and grinding functions into the same equipment, the continuous drying and multiple grinding of materials can be achieved through the cooperation of the screw conveyor and the grinding disc, simplifying the process and improving processing efficiency.
It achieves efficient drying and crushing of materials, reduces material transportation costs and the risk of secondary moisture absorption, and improves product uniformity and quality.
Smart Images
Figure CN224552016U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of modified magnesium hydroxide processing technology, specifically to a drying box for powdered materials. Background Technology
[0002] Modified magnesium hydroxide, as a high-performance inorganic flame retardant and smoke suppressant, is widely used in the processing of polymer materials such as plastics, rubber, and cable materials due to its advantages such as high decomposition temperature, good thermal stability, and environmental friendliness. To improve its compatibility and dispersibility with organic matrices, industrial production typically employs surface modification treatments using stearic acid, silane coupling agents, etc., to construct a hydrophobic coating layer on the particle surface, reducing its hygroscopicity and agglomeration tendency, thereby ensuring the mechanical properties and flame retardant effect of downstream products.
[0003] However, during the storage, transportation, and transshipment of modified magnesium hydroxide, factors such as fluctuations in environmental humidity and insufficient packaging sealing can cause local defects or incomplete coverage of the hydrophobic coating on the particle surface, even after modification treatment, leading to the adsorption of a small amount of moisture. This adsorbed moisture forms liquid bridges between particles, causing partial agglomeration of the originally dispersed powdered modified magnesium hydroxide. The agglomerates not only retain moisture but also form stable clusters due to the tight adhesion of the particles. Directly using this damp, agglomerated modified magnesium hydroxide in production will result in uneven dispersion within the polymer matrix, severely affecting the flame retardant efficiency and processing performance of the product. Therefore, it is essential to perform drying, dehydration, and grinding dispersion treatment.
[0004] Currently, most powdered material drying devices commonly used in the industry are single-function equipment: one type only has a drying function, removing moisture from materials through hot air circulation or infrared heating, but it cannot effectively break up the lumps that remain after drying. These lumps need to be transferred to grinding equipment for further processing, which not only increases the material transportation cost and the risk of secondary moisture absorption, but may also cause particle damage due to collisions during transportation; the other type integrates a simple stirring structure, but its stirring components are mostly paddle-type, which can only roughly turn the material over and cannot fully grind the dense structure of modified magnesium hydroxide lumps, resulting in the presence of small lumps in the dried material, which are prone to forming "fish eyes" or agglomeration points during subsequent dispersion.
[0005] The existing devices mentioned above cannot simultaneously achieve efficient drying and thorough grinding, resulting in low processing efficiency of modified magnesium hydroxide. Furthermore, residual moisture or unresolved agglomerates can affect product quality, making it difficult to meet the stringent requirements for uniformity and dryness of modified magnesium hydroxide powder in industrial production. Therefore, there is an urgent need for a dedicated device that can simultaneously complete drying and grinding to solve the bottleneck problems of the existing technology. Utility Model Content
[0006] To address the aforementioned issues, a powdered material drying box is provided. By integrating hot air drying and grinding functions into the same device, it can continuously dry and remove moisture from materials while also grinding them multiple times, thus solving the problem of low processing efficiency of modified magnesium hydroxide in traditional devices.
[0007] To address the problems of existing technologies, this utility model provides a powdered material drying box, including a box body, the box body being provided with a feed inlet, a discharge outlet, and a ventilation opening, characterized in that it further includes:
[0008] Hot air assembly, used to deliver hot air into the chamber;
[0009] A limiting component is disposed inside the housing and has a vertically penetrating limiting channel, with a bearing plate disposed at the upper end of the limiting channel;
[0010] Drive components provide power output;
[0011] A spiral conveyor rod is connected to the drive assembly and disposed inside the box. The spiral conveyor rod is restricted to rotate within the limiting channel and can repeatedly convey the material inside the box to the bearing plate in the vertical direction.
[0012] The grinding disc, linked to the spiral conveyor rod, is capable of grinding the material on the support disc.
[0013] Preferably, the limiting assembly further includes a chassis, connecting rods, and a horizontal support plate. The chassis is limited to the lower end of the housing. An opening is provided at the center of the chassis, and a movable horizontal support plate is provided in the opening. A plurality of connecting rods are vertically arranged on the chassis, and the limiting channel is vertically arranged on the plurality of connecting rods.
[0014] Preferably, the limiting assembly further includes a chassis, connecting rods, and a horizontal support plate. The chassis is limited to the lower end of the housing. An opening is provided at the center of the chassis, and a movable horizontal support plate is provided in the opening. A plurality of connecting rods are vertically arranged on the chassis, and the limiting channel is vertically arranged on the plurality of connecting rods.
[0015] Preferably, the chassis has a funnel-shaped structure, and the material falling into the chassis can be drawn into the orthogonal projection range of the limiting channel.
[0016] Preferably, a plurality of grinding blocks are evenly spaced on the bottom surface of the grinding disc, and the grinding blocks are capable of grinding the material in the bearing disc.
[0017] Preferably, a fixing block is fixed to the upper end of the spiral conveying rod, and the grinding disc is constrained on the fixing block and can move along the axial direction of the spiral conveying rod.
[0018] Preferably, the grinding disc has an overflow port near its center, and the spiral conveyor rod can convey the material upward to the overflow port for overflow.
[0019] Preferably, the hot air assembly includes a disc-shaped hot air pipe, which is disposed above the grinding disc. The disc-shaped hot air pipe has several air outlets evenly spaced on it, and some of the air outlets can be aligned with the overflow outlet.
[0020] The advantages of this utility model compared to the prior art are:
[0021] 1. Integrating hot air drying and grinding functions into the same equipment, the material can be continuously dried and dehydrated by hot air inside the chamber, and can also be conveyed to the bearing plate by the screw conveyor to grind and break up the lumps. There is no need to transfer the material to other equipment, which simplifies the process, reduces material turnover links, improves processing efficiency, and also reduces the risk of secondary moisture and contamination of materials during turnover. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of the overall structure of a powder material drying box according to this utility model.
[0023] Figure 2 This is a cross-sectional structural diagram of a powder material drying box according to the present invention.
[0024] Figure 3 This is a schematic diagram of the box structure of a powder material drying box according to the present invention.
[0025] Figure 4 This is a schematic diagram of the connection structure of the limiting component, the spiral conveying rod and the grinding disc of a powder material drying box according to this utility model.
[0026] Figure 5 This is an exploded structural diagram of the limiting component, spiral conveying rod, and grinding disc of a powder material drying box according to this utility model.
[0027] Figure 6 This is a schematic diagram of the connection structure between the spiral conveyor rod and the grinding disc in a powder material drying box according to this utility model.
[0028] Figure 7 This is a schematic diagram of the split structure of the limiting component of a powder material drying box according to the present invention.
[0029] The following components are labeled in the diagram: box 1, feed inlet 10, discharge outlet 11, ventilation outlet 12, hot air assembly 2, disc-shaped hot air pipe 20, limiting assembly 3, limiting channel 30, bearing plate 300, chassis 31, opening 310, connecting rod 32, horizontal bearing plate 33, spiral conveyor rod 4, grinding disc 5, grinding block 50, overflow outlet 51, and fixing block 6. Detailed Implementation
[0030] To further understand the features, technical means, and specific objectives and functions achieved by this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments.
[0031] like Figures 1-7 As shown, this utility model provides a powder material drying box, including a box body 1, which has an inlet 10, an outlet 11 and a vent 12. It also includes: a hot air assembly 2, a limiting assembly 3, a drive assembly, a spiral conveyor rod 4, and a grinding disc 5. The hot air assembly 2 is used to deliver hot air into the box body 1; the limiting assembly 3 is disposed inside the box body 1 and has a vertically penetrating limiting channel 30, with a bearing disc 300 at the upper end of the limiting channel 30; the drive assembly provides power output; the spiral conveyor rod 4 is connected to the drive assembly and disposed inside the box body 1, restricting its rotation within the limiting channel 30 and repeatedly conveying the material inside the box body 1 vertically to the bearing disc 300; the grinding disc 5 is linked to the spiral conveyor rod 4 and can grind the material on the bearing disc 300.
[0032] Integrating hot air drying and grinding functions into a single device, materials are continuously dried and dehydrated by hot air within the housing 1, and then conveyed to the carrying plate 300 via the screw conveyor 4. There, the grinding plate 5 grinds and breaks up clumps, eliminating the need to transfer materials to other equipment. This simplifies the process, reduces material handling steps, improves processing efficiency, and reduces the risk of secondary moisture absorption and contamination during material handling. The screw conveyor 4 repeatedly conveys materials vertically, allowing them to pass through the drying and grinding zones multiple times. This ensures thorough contact between the material and the hot air, resulting in more complete drying and repeated grinding of clumps, leading to better material uniformity and improved product quality. The limiting channel 30 of the limiting component 3 limits the screw conveyor 4, making its rotation more stable and preventing swaying or deviation. This ensures the stability and reliability of material conveying and grinding operations, reduces equipment malfunctions, and extends equipment lifespan. Each component has a clear division of labor: hot air component 2 is responsible for drying, spiral conveyor rod 4 and limiting component 3 are responsible for material conveying, and grinding disc 5 is responsible for grinding. The modular structure facilitates the design, manufacturing, assembly and subsequent maintenance of the equipment, and also makes it easier to optimize and improve different components.
[0033] The limiting component 3 also includes a chassis 31, connecting rods 32 and a horizontal support plate 33. The chassis 31 is limited to the lower end inside the housing 1. An opening 310 is provided at the center of the chassis 31. A movable horizontal support plate 33 is provided in the opening 310. Several connecting rods 32 are vertically arranged on the chassis 31. The limiting channel 30 is vertically arranged on several connecting rods 32.
[0034] like Figure 4 and Figure 7As shown, the horizontal bearing plate 33 ensures that the center position of the chassis 31 remains horizontal, improving the material conveying efficiency of the screw conveyor 4 and allowing for more thorough drying. When material is fed into the box 1 through the inlet 10, it first enters the chassis 31 of the limiting component 3. Through repeated grinding by the screw conveyor 4 and the grinding disc 5, the material is ground and dried more thoroughly. After the appropriate drying time is reached, the material can fall from the opening 310 into the outlet 11 of the box 1 by pulling the horizontal bearing plate 33, and then be discharged through the outlet 11. Preferably, the chassis 31 has a funnel-shaped structure, allowing the material falling into the chassis 31 to fall within the orthogonal projection range of the limiting channel 30. Furthermore, the funnel-shaped structure of the chassis 31 allows the material inside the chassis 31 to slide into the bottom of the chassis 31 under its own gravity, thereby entering the orthogonal projection of the limiting channel 30. This allows the spiral conveyor rod 4 to more fully lift, convey, and grind the material, improving the drying and grinding efficiency of the material.
[0035] A number of grinding blocks 50 are evenly spaced on the bottom surface of the grinding disc 5. The grinding blocks 50 can grind the material within the bearing disc 300. Figure 6 As shown, the grinding disc 5 and the supporting disc 300 cooperate to grind the material. Preferably, a fixing block 6 is fixed to the upper end of the screw conveyor 4, restricting the grinding disc 5 to the fixing block 6 and allowing it to move axially along the screw conveyor 4. Furthermore, an overflow port 51 is provided near the center of the grinding disc 5, allowing the screw conveyor 4 to convey the material upwards to overflow from the overflow port 51. To increase the adaptability of the device and prevent blockage between the material conveyed by the screw conveyor 4 to the bearing plate 300 and the gap between the bearing plate 300 and the grinding plate 5, which would affect the grinding efficiency, the overflowing material can slide from the top of the grinding plate 5 to the base plate 31 through the overflow port 51, and then be conveyed back to the bearing plate 300 by the screw conveyor 4 from the base plate 31. At the same time, the grinding pressure is applied to the material placed on the bearing plate 300 by the weight of the grinding plate 5. When the material structure volume is large, it can lift the grinding plate 5, that is, the grinding plate 5 can rise a certain distance along the fixed block 6, thereby avoiding direct hard contact between the material and the grinding plate 5. The wear between the grinding plate 5 and the bearing plate 300 can be reduced by multiple grinding, thereby improving the service life of the device.
[0036] The hot air assembly 2 includes a disc-shaped hot air duct 20, which is positioned above the grinding disc 5. Several air outlets are evenly spaced on the disc-shaped hot air duct 20, some of which are aligned with the overflow outlet 51. Figure 2As shown, the disc-mounted hot air pipe can deliver hot air to the material at the overflow port 51 of the grinding disc 5, and can also deliver hot air to the chassis 31. It should be noted that, in order to prevent the hot air from blowing the material to the feed inlet 10 and the vent 12, it is preferable to seal the feed inlet 10 after the material is delivered into the box 1, and at the same time, a filter plate is installed at the vent 12 to prevent the material from flowing out of the box 1.
[0037] The above embodiments only illustrate one or more implementations of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.
Claims
1. A powdered material drying box, comprising a box body (1), wherein the box body (1) is provided with a feed inlet (10), a discharge outlet (11), and a ventilation opening (12), characterized in that, Also includes: Hot air assembly (2) is used to deliver hot air into the housing (1); The limiting component (3) is set inside the box (1) and has a limiting channel (30) that runs vertically through it. A bearing plate (300) is provided at the upper end of the limiting channel (30). Drive components provide power output; The spiral conveyor rod (4) is connected to the drive assembly and is disposed in the housing (1). The spiral conveyor rod (4) is restricted to rotating within the limiting channel (30) and can repeatedly convey the material in the housing (1) to the bearing plate (300) in the vertical direction. The grinding disc (5) is linked to the spiral conveyor rod (4) and can grind the material on the bearing disc (300).
2. The powdered material drying box according to claim 1, characterized in that, The limiting component (3) also includes a chassis (31), connecting rods (32) and a horizontal bearing plate (33). The chassis (31) is restricted to the lower end of the housing (1). An opening (310) is provided at the center of the chassis (31). A movable horizontal bearing plate (33) is provided in the opening (310). A plurality of connecting rods (32) are vertically arranged on the chassis (31). The limiting channel (30) is vertically arranged on the plurality of connecting rods (32).
3. A powdered material drying box according to claim 2, characterized in that, The chassis (31) has a funnel-shaped structure, and the material falling into the chassis (31) can be drawn into the orthographic projection range of the limiting channel (30).
4. A powdered material drying box according to claim 1, characterized in that, The grinding disc (5) has several grinding blocks (50) evenly spaced on its bottom surface, and the grinding blocks (50) can grind the material in the bearing disc (300).
5. A powdered material drying box according to claim 4, characterized in that, The upper end of the spiral conveyor (4) is fixed with a fixing block (6), and the grinding disc (5) is restricted on the fixing block (6) and can move along the axial direction of the spiral conveyor.
6. A powdered material drying box according to claim 5, characterized in that, The grinding disc (5) has an overflow port (51) near its center, and the spiral conveyor (4) can convey the material upward to the overflow port (51) for overflow.
7. A powdered material drying box according to claim 6, characterized in that, The hot air assembly (2) includes a disc-shaped hot air pipe (20), which is disposed above the grinding disc (5). Several air outlets are evenly spaced on the disc-shaped hot air pipe (20), and some of the air outlets can be aligned with the overflow outlet (51).