A spray granulation tower for processing an alumina ceramic material

Abstract

This utility model relates to a spray granulation tower for processing alumina ceramic materials, including a heating system and a granulation component disposed at the air outlet of the heating system. The granulation component further includes a granulation tower body, and includes a filter component disposed at the top inside the granulation tower body to prevent ceramic particles from being discharged with the air. The filter component includes several vertically arranged filter bags for filtering ceramic particles, and also includes a drive mechanism for shaking the filter bags. This utility model improves the utilization rate of raw materials by providing a filter component at the top of the granulation tower body to prevent the formed particles from escaping with the air from the granulation tower body.

Description

Technical Field

[0001] This utility model relates to the field of granulation tower technology, specifically a spray granulation tower for processing alumina ceramic materials. Background Technology

[0002] In modern industry, alumina ceramic materials are widely used in key fields such as electronics, machinery, aerospace, and biomedicine due to their excellent properties, including high strength, high hardness, high temperature resistance, corrosion resistance, good chemical stability, and insulation. Spray granulation towers, as the core equipment for preparing high-quality granulated powder in the processing of alumina ceramic materials, work by dispersing pretreated alumina ceramic slurry into fine droplets through an atomizer. These droplets then come into full contact with hot air inside the tower, rapidly evaporating moisture and ultimately forming spherical particles with good flowability and formability.

[0003] Chinese invention patent application (publication number CN119869336A) discloses an energy-saving and environmentally friendly spray granulation tower for processing alumina ceramic materials. The tower includes a base plate, a mixing tank fixedly installed at the upper end of the base plate, a heating pipe spirally wound around the outer side of the mixing tank, a stirring assembly inside the mixing tank, and a granulation tower box at the rear end of the mixing tank. A collection hopper is fixedly connected to the lower end of the granulation tower box. A hot air blower heats the air into hot gas, which is then sprayed from multiple nozzles at the upper end of multiple branch pipes through a conveying pipe. The spray particles and hot gas work in a mixed flow to dry and form spherical particles. The dried spherical particles gradually settle within the drying tower.

[0004] The existing technology discloses an alumina ceramic spray granulation tower that typically uses a hot air blower to heat air, which is then sprayed through jet nozzles at the top of a delivery pipe and branch pipes to form a mixed flow with the atomized slurry for drying and granulation. Because the hot air velocity and the particle size distribution of the atomized particles are difficult to precisely match, a large number of ceramic particles are carried out of the granulation tower by the airflow, resulting in a significant reduction in raw material utilization. Utility Model Content

[0005] The purpose of this invention is to provide a spray granulation tower for processing alumina ceramic materials. By setting a filter component at the top of the granulation tower body to prevent the formed particles from escaping out of the granulation tower body with the air, the utilization rate of raw materials is improved.

[0006] To address the problems of existing technologies, this utility model provides a spray granulation tower for processing alumina ceramic materials, including a heating system and a granulation component disposed at the air outlet of the heating system. The granulation component further includes a granulation tower body, and the granulation component includes a filter component disposed at the top inside the granulation tower body to prevent ceramic particles from being discharged with the air. The filter component includes a plurality of vertically arranged filter bags for filtering ceramic particles, and the filter component further includes a drive mechanism for shaking the filter bags.

[0007] Preferably, the driving mechanism includes a movable plate connected to the top of the filter bag, the movable plate being able to move up and down inside the granulation tower body, and the driving mechanism further includes a telescopic driving component vertically installed on the top of the granulation tower body for driving the movable plate to move up and down.

[0008] Preferably, the filter assembly further includes a fixing plate disposed at the bottom of the filter bag and fixedly connected to the filter bag.

[0009] Preferably, an air outlet is fitted at the bottom of the granulation tower body, and the bottom end of the air outlet is connected to a discharge valve for discharging ceramic particles.

[0010] Preferably, the granulation assembly further includes a spraying assembly located near the bottom of the granulation tower body, which is capable of spraying liquid ceramic material into the interior of the granulation tower body, and the granulation tower body is also provided with a reserved interface for connecting a purifier near the top.

[0011] Preferably, the spray assembly includes a spray pipe extending into the interior of the granulation tower body, and the outlet end of the spray pipe is also provided with a spray head capable of spraying liquid ceramic material upwards.

[0012] Preferably, the heating system includes a heating box disposed outside the granulation tower body, and the heating box is provided with a second connecting pipe that can input hot air into the granulation tower body. The heating box is also provided with a heater that can heat the air. The heating system also includes a fan disposed outside the heating box, the air outlet of the fan is connected to a first connecting pipe, the first connecting pipe is connected to the heating box, and the heater is disposed near the second connecting pipe.

[0013] Preferably, the heating chamber is further provided with a primary filter element, a dehumidifying element, and a secondary filter element along the airflow direction.

[0014] The advantages of this utility model compared to the prior art are:

[0015] 1. This application includes a filter assembly at the top of the granulation tower body to block ceramic particles discharged from the upper part of the granulation tower body with the airflow. The filter bag in the filter assembly can effectively intercept ceramic particles. When too many ceramic particles accumulate in the filter bag, the ceramic particles in the filter bag can be shaken off by the up-and-down movement of the movable plate, thereby preventing the filter bag from becoming clogged.

[0016] 2. This application improves the heating system by installing a heater inside the heating chamber. This heater employs a multi-plate structure with multiple heating wires arranged inside to increase the contact area with air, thereby enhancing the heating speed. Furthermore, the heating chamber is equipped with primary and secondary filters to filter dust from the air; simultaneously, a dehumidifier absorbs moisture from the air to prevent dust and moisture from adversely affecting the heater's heating efficiency. Attached Figure Description

[0017] Figure 1 This is a first three-dimensional structural schematic diagram of a spray granulation tower for processing alumina ceramic materials according to this utility model.

[0018] Figure 2 This is a second three-dimensional structural schematic diagram of a spray granulation tower for processing alumina ceramic materials according to this utility model.

[0019] Figure 3 This is an exploded structural diagram of a spray granulation tower for processing alumina ceramic materials according to this utility model.

[0020] Figure 4 This is a cross-sectional structural schematic diagram of a spray granulation tower for processing alumina ceramic materials according to this utility model.

[0021] Figure 5 This is a three-dimensional structural diagram of the granulation component of a spray granulation tower for processing alumina ceramic materials according to this utility model.

[0022] Figure 6 This is a schematic diagram of the heating system of a spray granulation tower for processing alumina ceramic materials according to this utility model.

[0023] The following are the labels in the diagram: 1. Heating system; 11. Heating box; 12. Fan; 121. First connecting pipe; 13. Second connecting pipe; 14. Primary filter element; 15. Dehumidifying element; 16. Secondary filter element; 17. Heater; 2. Granulation assembly; 21. Granulation tower body; 22. Filter assembly; 221. Fixed plate; 222. Filter bag; 223. Movable plate; 224. Telescopic drive component; 23. Spray assembly; 231. Spray pipe; 232. Spray head; 24. Air outlet; 25. Discharge valve. Detailed Implementation

[0024] 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.

[0025] Reference Figures 1-6 As shown, this utility model provides a spray granulation tower for processing alumina ceramic materials, including a heating system 1 and a granulation component 2 disposed at the air outlet of the heating system 1. The heating system 1 is the heat source for the entire spray granulation tower, responsible for generating hot air at a certain temperature. Hot air is an important medium in the spray granulation process, used to dry and granulate the material entering the granulation component 2, promoting the evaporation of moisture in the material, thereby achieving the formation of ceramic particles. The granulation component 2 also includes a granulation tower body 21, which includes a filter component 22 disposed at the top inside the granulation tower body 21 to prevent ceramic particles from being discharged with the air. The filter component 22 includes several vertically arranged filter bags 222 for filtering ceramic particles, and also includes a drive mechanism for shaking the filter bags 222. The main function of the filter component 22 is to prevent ceramic particles from being discharged with the air from the granulation tower body 21. In the spray granulation process, in addition to forming ceramic particles, some fine particles or dust are also generated. If these particles are discharged with the air, it will not only waste materials but may also pollute the environment. The filter assembly 22 uses its filtration function to intercept these particles, ensuring that the exhaust air is relatively clean.

[0026] Heating system 1 generates hot air at a certain temperature, which enters the granulation tower body 21 of granulation component 2 from the outlet of heating system 1. Alumina ceramic material slurry is sprayed into the granulation tower body 21, making full contact with the hot air. The hot air heats the slurry, causing the water in the slurry to evaporate rapidly, and the solid particles in the slurry gradually aggregate to form ceramic particles, completing the granulation process. During granulation, the hot air carries the ceramic particles upwards within the granulation tower body 21. When the airflow reaches the top inside the granulation tower body 21, it passes through the filter component 22. The filter bags 222 in the filter component 22 function, allowing air to exit the granulation tower body 21 through the pores of the filter bags 222, while the ceramic particles are intercepted by the filter bags 222 and remain inside the granulation tower body 21, achieving separation of air and ceramic particles. As the filtration process continues, a large number of ceramic particles gradually accumulate on the surface of the filter bags 222. At this point, the drive mechanism starts working, causing the filter bag 222 to shake, dislodging the ceramic particles attached to its surface. These dislodged ceramic particles return to the granulation tower body 21 to continue participating in subsequent granulation processes or be collected. In this way, the filtration performance of the filter bag 222 is ensured, enabling the filter assembly 22 to work continuously and effectively, ensuring that the discharged air meets requirements, while reducing material waste.

[0027] The drive mechanism includes a movable plate 223 connected to the top of the filter bag 222. The movable plate 223 can move up and down inside the granulation tower body 21. The drive mechanism also includes a telescopic drive member 224 vertically installed on the top of the granulation tower body 21 for driving the movable plate 223 to move up and down. The filter assembly 22 also includes a fixed plate 221 disposed at the bottom of the filter bag 222 and fixedly connected to the filter bag 222.

[0028] The telescopic drive component 224 begins operation, performing telescopic movements according to a preset program. When the telescopic drive component 224 retracts upward, it drives the movable plate 223 to move upward. When the telescopic drive component 224 extends downward, it pushes the movable plate 223 downward. The filter bag 222 shakes up and down under the influence of the movable plate 223, thereby continuously shaking off the ceramic particles on the surface of the filter bag 222. The shaken-off ceramic particles return to the granulation tower body 21.

[0029] A blower 24 is fitted at the bottom of the granulation tower body 21, and a discharge valve 25 for discharging ceramic particles is connected to the bottom end of the blower 24. During the granulation process, the discharge valve 25 is closed to prevent ceramic particles from being discharged before granulation is complete or before collection conditions are met. When the granulation process is complete and the ceramic particles need to be collected, the discharge valve 25 is opened to allow the ceramic particles that have settled and accumulated at the bottom of the granulation tower body 21 to be discharged smoothly for subsequent processing or packaging. The granulation assembly 2 also includes a spray assembly 23 located near the bottom of the granulation tower body 21, which sprays liquid ceramic material into the interior of the granulation tower body 21. A reserved interface for connecting a purifier is also provided near the top of the granulation tower body 21. During the granulation process, although the air is filtered by the filter assembly 22, the exhaust air may still contain trace amounts of harmful substances or impurities. By connecting a purifier through the reserved interface, the exhaust air can be further purified to ensure that the air released into the environment meets environmental protection requirements and reduces environmental pollution. Meanwhile, the reserved interface also provides convenience for possible future function expansion or equipment upgrades.

[0030] The spray assembly 23 includes a spray pipe 231 extending into the granulation tower body 21. The outlet end of the spray pipe 231 is also equipped with a spray head 232 capable of spraying liquid ceramic material upwards. The liquid ceramic material is transported from external equipment to the spray head 232 via the spray pipe 231. The spray head 232 sprays the liquid ceramic material upwards, forming fine droplets. As these droplets rise inside the granulation tower body 21, they come into full contact with the hot air entering from the heating system 1. The hot air transfers heat to the droplets, causing the moisture in the droplets to evaporate rapidly. As the moisture continues to evaporate, the solid particles in the droplets gradually aggregate, forming ceramic particles.

[0031] The heating system 1 includes a heating box 11 located outside the granulation tower body 21, and a second connecting pipe 13 on the heating box 11 for introducing hot air into the granulation tower body 21. The heating box 11 also contains a heater 17 for heating the air. The heating system 1 further includes a fan 12 located outside the heating box 11, with a first connecting pipe 121 connected to the outlet of the fan 12. The first connecting pipe 121 is connected to the heating box 11. The heater 17 is located near the second connecting pipe 13. A primary filter element 14, a dehumidifying element 15, and a secondary filter element 16 are also provided in the heating box 11 along the airflow direction.

[0032] The fan 12 starts, drawing in outside air through its inlet and conveying it to the heating chamber 11 via the first connecting pipe 121. The air entering the heating chamber 11 first passes through the primary filter element 14, which intercepts larger dust particles and impurities, completing the initial purification of the air. The air after primary filtration continues to flow to the dehumidifier element 15. The dehumidifier element 15 absorbs moisture from the air, reducing humidity and making the air dry. The dried air then passes through the secondary filter element 16, which further removes residual fine particles, ensuring air cleanliness. The filtered and dehumidified air flows to the heater 17, which begins operation to heat the air to the temperature required for granulation. The heated air is then input into the granulation tower body 21 via the second connecting pipe 13, providing a suitable thermal environment for the spray granulation process of the ceramic material. Inside the granulation tower body 21, hot air comes into full contact with the liquid ceramic material droplets sprayed by the spray assembly 23, causing the moisture in the droplets to evaporate rapidly and promoting the formation of ceramic particles.

[0033] 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 spray granulation tower for processing an alumina ceramic material, characterized by: The device includes a heating system (1) and a granulation assembly (2) disposed at the air outlet of the heating system (1). The granulation assembly (2) also includes a granulation tower body (21). The granulation assembly (2) includes a filter assembly (22) disposed at the top inside the granulation tower body (21) to prevent ceramic particles from being discharged with the air. The filter assembly (22) includes a plurality of vertically arranged filter bags (222) for filtering ceramic particles. The filter assembly (22) also includes a drive mechanism for shaking the filter bags (222).

2. The spray granulation tower for processing an alumina ceramic material according to claim 1, characterized by: The driving mechanism includes a movable plate (223) connected to the top of the filter bag (222), the movable plate (223) being able to move up and down inside the granulation tower body (21), and the driving mechanism also includes a telescopic driving member (224) vertically installed on the top of the granulation tower body (21) for driving the movable plate (223) to move up and down.

3. The spray granulation tower for processing an alumina ceramic material according to claim 1, characterized by: The filter assembly (22) also includes a fixing plate (221) disposed at the bottom of the filter bag (222) and fixedly connected to the filter bag (222).

4. The spray granulation tower for processing an alumina ceramic material according to claim 1, characterized by: The bottom of the granulation tower body (21) is fitted with an air outlet (24), and the bottom end of the air outlet (24) is connected to a discharge valve (25) for discharging ceramic particles.

5. The spray granulation tower for processing alumina ceramic materials according to claim 1, characterized in that: The granulation assembly (2) also includes a spray assembly (23) located near the bottom of the granulation tower body (21) that can spray liquid ceramic material into the interior of the granulation tower body (21). The granulation tower body (21) is also provided with a reserved interface for connecting a purifier near the top.

6. The spray granulation tower for processing alumina ceramic materials according to claim 5, characterized in that: The spray assembly (23) includes a spray pipe (231) extending into the interior of the granulation tower body (21), and the discharge end of the spray pipe (231) is also provided with a spray head (232) capable of spraying liquid ceramic material upward.

7. The spray granulation tower for processing alumina ceramic materials according to claim 1, characterized in that: The heating system (1) includes a heating box (11) located outside the granulation tower body (21), and a second connecting pipe (13) is provided on the heating box (11) to input hot air into the granulation tower body (21). The heating box (11) is also provided with a heater (17) that can heat the air. The heating system (1) also includes a fan (12) located outside the heating box (11). The air outlet of the fan (12) is connected to a first connecting pipe (121), which is connected to the heating box (11). The heater (17) is located near the second connecting pipe (13).

8. The spray granulation tower for processing alumina ceramic materials according to claim 7, characterized in that: The heating box (11) is also provided with a primary filter element (14), a dehumidifying element (15) and a secondary filter element (16) along the air flow direction.

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