Drying and grinding device for raw material slurry

Abstract

The utility model relates to the technical field of slurry processing, and particularly discloses a drying and grinding device for raw material slurry. According to the device, the material dispersing mechanism, the drying mechanism and the grinding mechanism are sequentially arranged in the hollow tank body, so that continuous treatment of raw material slurry from feeding to grinding is realized. The top driving part drives the material dispersing mechanism and the grinding mechanism at the same time, and synchronism and coordination of materials in the whole treatment process are guaranteed. And due to the arrangement of the differential mechanism, the rotating speed difference between the material dispersing mechanism and the grinding mechanism is adjusted, the treatment effect of the materials in the drying and grinding process is optimized, and the overall machining efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of slurry processing technology, and in particular to a drying and grinding apparatus for raw material slurry. Background Technology

[0002] Nanocatalytic materials, due to their large specific surface area, high surface activity, and strong reaction selectivity, have been widely used in environmental remediation, new energy development, and fine chemical industries. Particularly in the field of air purification, nanocatalytic materials can be used to efficiently decompose indoor pollutants such as formaldehyde, benzene, and TVOCs, and have become important raw materials for the preparation of photocatalysts, adsorbents, and multifunctional composite purification materials. For example, titanium dioxide, manganese-based composites, and activated carbon supports, after nano-modification, can significantly improve the catalytic decomposition efficiency of formaldehyde and possess continuous and stable purification performance. Therefore, the industrial-scale preparation technology of nanocatalytic materials has become a key research direction for relevant enterprises and research institutions.

[0003] In the preparation of nanocatalytic materials, raw materials typically require multiple steps, including weighing, mixing, ball milling, dispersion, reaction, washing, drying, and grinding. Especially for intermediate products in slurry form, which have high moisture content, dehydration and particle size control must be achieved through drying and grinding processes to meet the quality requirements of subsequent granulation, modification, or molding processes.

[0004] Commonly used drying equipment includes box-type hot air dryers, airflow dryers, and spray drying towers, while grinding equipment often includes ball mills, sand mills, and high-speed impact crushers. However, drying and grinding are usually completed in two separate sets of equipment, requiring the material to be transferred to the grinding equipment after drying. This not only results in cumulative energy consumption but also causes problems such as material loss, moisture absorption, and secondary pollution during the transfer process. In addition, slurry is prone to crusting and caking during the drying process, leading to uneven drying and affecting the particle size consistency and dispersibility of the final product.

[0005] In summary, there is an urgent need for a highly efficient and integrated drying and grinding device for raw material slurries to solve the aforementioned technical bottlenecks. Utility Model Content

[0006] In order to achieve continuous drying and grinding of raw material slurry, improve processing efficiency, reduce energy consumption, and solve problems such as skinning and caking that exist in traditional processing, this application provides a drying and grinding device for raw material slurry.

[0007] This application provides a drying and grinding apparatus for raw material slurry, which adopts the following technical solution:

[0008] A drying and grinding device for raw material slurry includes a hollow tank with a feed inlet at the top. The inner cavity of the tank is provided with a material dispersing mechanism, a drying mechanism, and a grinding mechanism arranged sequentially from top to bottom. The top of the tank is provided with a drive component that is connected to the material dispersing mechanism and the grinding mechanism respectively. A differential speed mechanism for adjusting the differential speed is provided between the material dispersing mechanism and the grinding mechanism.

[0009] By adopting the above technical solution, this device achieves continuous processing of raw material slurry from feeding to grinding by sequentially arranging a material dispersing mechanism, a drying mechanism, and a grinding mechanism within a hollow tank. The top drive unit simultaneously drives both the material dispersing mechanism and the grinding mechanism, ensuring the synchronicity and coordination of material processing throughout the entire process. The differential speed mechanism allows for adjustment of the speed difference between the material dispersing mechanism and the grinding mechanism, optimizing the processing effect of the material during drying and grinding, and improving overall processing efficiency.

[0010] Optionally, the material distribution mechanism includes a material distribution disc coaxially sleeved on the output end of the drive component. Multiple material dropping grooves are spaced circumferentially on the surface of the material distribution disc, and the opening width of the material dropping grooves gradually increases from the output end closer to the drive component to the output end farther away from the drive component.

[0011] By adopting the above technical solution, the raw materials can gradually accelerate and fall during the rotation of the material distribution disc, forming a uniform material distribution, avoiding material accumulation and blockage, and providing good preconditions for subsequent drying and grinding.

[0012] Optionally, a funnel-shaped material guide channel is fixedly installed at the inlet, and the lower end of the material guide channel extends directly above the side of the discharge trough near the output end of the drive component.

[0013] By adopting the above technical solution, the structure ensures that the raw materials can first fall into the smaller end of the discharge chute, allowing loose raw materials to fall directly from the discharge chute, while raw materials that are gathered together are thrown out by the rotation of the distribution plate and fall from the larger end of the discharge chute. If there are clumps of raw materials, they will eventually fall from the edge of the distribution plate. This process allows the raw materials to be discharged at different positions according to their aggregation characteristics, reducing the possibility of accumulation, shortening the discharge time, and improving the discharge efficiency.

[0014] Optionally, the drying mechanism includes an air inlet pipe, a connecting pipe, and an air guide ring. The air inlet pipe is installed on the outer wall of the tank, and one end extends through the tank and into the inner cavity. The connecting pipe is coaxially fixed with the output end of the drive component. A set of air inlets and a set of air outlets are circumferentially opened on the outer wall of the connecting pipe, and each air inlet and each air outlet is located at a different position along the length of the connecting pipe. The air guide ring is fixedly connected to the end of the air inlet pipe and rotates and seals with the connecting pipe. Each air inlet is located inside the air guide ring, and each air inlet and each air outlet are connected.

[0015] By adopting the above technical solution, hot air can enter the connecting pipe through the air inlet pipe and the air guide ring, and then be evenly distributed in the inner cavity of the tank through the air inlet and air outlet, so as to achieve uniform drying of materials and improve drying efficiency and quality.

[0016] Optionally, the drying mechanism further includes a stirring rod and jet nozzles. The stirring rod is hollow and has multiple nozzles corresponding to each exhaust hole. Each stirring rod is fixed to the outer wall of the connecting pipe and communicates with the corresponding exhaust hole. Multiple jet nozzles are provided, with each stirring rod having multiple jet nozzles. Each jet nozzle faces the surface of the material tray and communicates with the inner cavity of the corresponding stirring rod.

[0017] By adopting the above technical solution, hot air is directly sprayed onto the material on the material tray through the stirring rod and the jet nozzle. This not only accelerates the drying process of the material, but also promotes the turning and loosening of the material through the impact of the airflow, preventing the material from clumping and sticking together during the drying process.

[0018] Optionally, the outer walls on both sides of the stirring rod are sloped, and the distance between the outer walls near the top of the stirring rod is smaller than the distance between the outer walls near the bottom.

[0019] By adopting the above technical solution, when the falling raw material encounters the rotating inclined plane, the inclined plane of the stirring rod can further disperse the raw material and throw it upward, allowing the raw material to come into contact with the hot air for a longer time, resulting in a better drying effect.

[0020] Optionally, the grinding mechanism includes a grinding hemisphere coaxially fixed to the bottom of the connecting pipe and a plurality of grinding plates fixed at intervals on the inner wall of the tank. A grinding channel is reserved between the grinding hemisphere and the inner wall of the tank, and the width of the grinding channel gradually narrows from near the top of the grinding hemisphere to near the bottom of the grinding hemisphere.

[0021] By adopting the above technical solution, the raw materials will enter the grinding channel during the falling process. Inside the grinding channel, the materials are gradually subjected to greater shear force and pressure, which realizes the gradual fine grinding of the materials and ensures the uniformity and fineness of the particle size of the final product.

[0022] Optionally, the differential mechanism includes a planet carrier, planet gears, a ring gear, and a sun gear. The planet carrier is coaxially fixed to the output shaft of the drive component. Multiple planet gears are evenly distributed and rotatably mounted on the planet carrier. The ring gear is fixed to the inner wall of the tank and meshes with each of the planet gears. The sun gear is coaxially fixed to the top of the connecting pipe and meshes with each of the planet gears.

[0023] By adopting the above technical solution, the connecting pipe can achieve a different rotation speed from the planetary frame under the drive of the driving component, thereby realizing differential operation between the drying and grinding mechanisms. Specifically, the rotation speed of the stirring rod is greater than that of the material distribution disc, which allows the stirring rod to increase the height of the raw material throwing, thereby increasing the contact time between the raw material and the hot air, optimizing the processing speed and effect of the material at different processing stages, and improving the overall coordination and efficiency of the processing.

[0024] Optionally, the bottom of the tank is provided with a collection chamber for collecting the ground and dried material, and the collection chamber can be slidably disposed inside the side wall of the tank.

[0025] By adopting the above technical solution, the processed raw materials can be easily collected and removed, reducing the residence time of the raw materials in the equipment, reducing the risk of cross-contamination, and also facilitating the cleaning and maintenance of the equipment, thus improving the overall operability and practicality of the equipment.

[0026] In summary, this application includes at least one of the following beneficial technical effects:

[0027] 1. This device achieves continuous processing of raw material slurry from feeding to grinding by sequentially arranging a material dispersing mechanism, a drying mechanism, and a grinding mechanism inside a hollow tank. The top drive unit simultaneously drives the material dispersing mechanism and the grinding mechanism, ensuring the synchronicity and coordination of the material throughout the entire processing. The differential speed mechanism allows for adjustment of the speed difference between the material dispersing mechanism and the grinding mechanism, optimizing the processing effect of the material during the drying and grinding processes and improving the overall processing efficiency.

[0028] 2. The opening width of the material feeding chute gradually increases from the output end near the drive component to the output end away from the drive component, so that the raw material can gradually accelerate and fall during the rotation of the material distribution disc, forming a uniform material distribution, avoiding material accumulation and blockage, and providing good preconditions for subsequent drying and grinding.

[0029] 3. Hot air is sprayed directly onto the material on the material tray through the stirring rod and the jet nozzle, which not only accelerates the drying process of the material, but also promotes the turning and loosening of the material through the impact of the airflow, preventing the material from clumping and sticking during the drying process.

[0030] 4. The outer walls on both sides of the stirring rod are set as inclined surfaces, and the distance between the two outer walls near the top of the stirring rod is smaller than the distance between the two outer walls near the bottom. When the falling raw material hits the rotating inclined surface, the inclined surface of the stirring rod can further disperse the raw material and throw it upward, so that the raw material can be in contact with the hot air for a longer time, resulting in a better drying effect.

[0031] 5. The connecting pipe, driven by the drive unit, achieves a different rotational speed than the planetary frame, thereby realizing differential operation between the drying and grinding mechanisms. This makes the rotational speed of the stirring rod greater than that of the material distribution disc, allowing the stirring rod to throw the raw materials to a higher height, increasing the contact time between the raw materials and hot air, optimizing the processing speed and effect of materials at different processing stages, and improving the overall coordination and efficiency of the processing. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is a schematic diagram of the overall structure of a drying and grinding device for raw material slurry in an embodiment of this application;

[0034] Figure 2 yes Figure 1 A schematic diagram of the internal structure of the drying and grinding device for raw material slurry;

[0035] Figure 3 yes Figure 1 A three-dimensional structural diagram of the internal structure of the drying and grinding device for raw material slurry;

[0036] Figure 4 yes Figure 3 A partial exploded structure diagram of the intermediate differential mechanism.

[0037] Reference numerals: 1. Tank body; 11. Inlet; 12. Drive unit; 13. Material guide channel; 2. Distributor mechanism; 21. Distributor tray; 211. Drop chute; 3. Drying mechanism; 31. Air inlet pipe; 32. Connecting pipe; 321. Air inlet hole; 322. Exhaust hole; 33. Air guide ring; 34. Air nozzle; 35. Stirring rod; 4. Grinding mechanism; 41. Grinding hemisphere; 42. Grinding plate; 5. Differential mechanism; 51. Planetary carrier; 52. Planetary gear; 53. Gear ring; 54. Sun gear; 6. Collection bin. Detailed Implementation

[0038] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail below.

[0039] This application discloses a drying and grinding apparatus for raw material slurry.

[0040] Reference Figure 1 , Figure 2 and Figure 3 A drying and grinding device for raw material slurry includes a hollow tank 1 with a feed inlet 11 at the top. The inner cavity of the tank 1 is provided with a material dispersing mechanism 2, a drying mechanism 3, and a grinding mechanism 4 arranged sequentially from top to bottom. The top of the tank 1 is provided with a drive component 12 that is connected to the material dispersing mechanism 2 and the grinding mechanism 4 respectively. The drive component 12 is a servo motor. A differential speed mechanism 5 for adjusting the differential speed is provided between the material dispersing mechanism 2 and the grinding mechanism 4.

[0041] This solution achieves continuous processing of raw material slurry from feeding to grinding by sequentially arranging a material dispersing mechanism 2, a drying mechanism 3, and a grinding mechanism 4 within a hollow tank 1. The top drive unit 12 simultaneously drives both the material dispersing mechanism 2 and the grinding mechanism 4, ensuring the synchronicity and coordination of material processing throughout the entire process. The differential speed mechanism 5 allows for adjustment of the speed difference between the material dispersing mechanism 2 and the grinding mechanism 4, optimizing the processing effect of the material during drying and grinding, and improving overall processing efficiency.

[0042] Reference Figure 2 and Figure 3 The material distribution mechanism 2 includes a material distribution disc 21 coaxially sleeved on the output end of the drive component 12. Multiple material drop grooves 211 are spaced circumferentially on the surface of the disc 21. The opening width of the material drop grooves 211 gradually increases from the output end closer to the drive component 12 to the output end farther away from the drive component 12. This allows the raw material to gradually accelerate and fall during the rotation of the material distribution disc 21, forming a uniform material distribution and avoiding material accumulation and blockage, thus providing favorable conditions for subsequent drying and grinding.

[0043] A funnel-shaped guide channel 13 is fixedly installed at the inlet 11. The lower end of the guide channel 13 extends directly above the side of the discharge chute 211 near the output end of the drive unit 12. This structure ensures that the raw material can fall into the smaller end of the discharge chute 211 first, so that loose raw material can fall directly from the discharge chute 211. Raw material that is gathered together is thrown out by the rotation of the distribution plate 21 and falls from the larger end of the discharge chute 211. If there is clump of raw material, it will eventually fall from the edge of the distribution plate 21. This process allows the raw material to be discharged at different positions according to the aggregation characteristics, reducing the possibility of accumulation, shortening the discharge time, and improving the discharge efficiency.

[0044] Reference Figure 2 and Figure 3 The drying mechanism 3 includes an air inlet pipe 31, a connecting pipe 32, and an air guide ring 33. The air inlet pipe 31 is installed on the outer wall of the tank 1, with one end penetrating the tank 1 and extending into the inner cavity, and the other end connected to the external drying system. The connecting pipe 32 is coaxially fixed to the output end of the drive component 12. A set of air inlets 321 and a set of air outlets 322 are circumferentially opened on the outer wall of the connecting pipe 32, and each air inlet 321 and each air outlet 322 is located at different positions along the length of the connecting pipe 32. The air guide ring 33 is fixedly connected to the end of the air inlet pipe 31 and rotates and seals with the connecting pipe 32. Each air inlet 321 is located inside the air guide ring 33, and each air inlet 321 and each air outlet 322 are connected. Hot air can enter the connecting pipe 32 through the air inlet pipe 31 and the air guide ring 33, and then be evenly distributed in the inner cavity of the tank 1 through the air inlets 321 and the air outlets 322, achieving uniform drying of the material and improving drying efficiency and quality.

[0045] Reference Figure 2 and Figure 3 The drying mechanism 3 also includes stirring rods 35 and air nozzles 34. The stirring rods 35 are hollow and have multiple nozzles corresponding to each exhaust port 322. Each stirring rod 35 is fixed to the outer wall of the connecting pipe 32 and communicates with its corresponding exhaust port 322. Multiple air nozzles 34 are provided on each stirring rod 35, with each nozzle facing the surface of the material distribution tray 21 and communicating with the inner cavity of the corresponding stirring rod 35. Hot air is directly sprayed onto the material on the material distribution tray 21 through the stirring rods 35 and air nozzles 34, which not only accelerates the drying process but also promotes the agitation and loosening of the material through the impact of the airflow, preventing clumping and adhesion during the drying process.

[0046] Reference Figure 2 and Figure 3The outer walls on both sides of the stirring rod 35 are set as inclined surfaces, and the distance between the two outer walls near the top of the stirring rod 35 is smaller than the distance between the two outer walls near the bottom. When the falling raw material hits the rotating inclined surface, the inclined surface of the stirring rod 35 can further disperse the raw material and make the raw material throw upward, so that the raw material can be in contact with the hot air for a longer time, resulting in a better drying effect.

[0047] Reference Figure 2 and Figure 3 The grinding mechanism 4 includes a grinding hemisphere 41 coaxially fixed to the bottom of the connecting pipe 32 and multiple grinding plates 42 fixed at intervals on the inner wall of the tank 1. A grinding channel is reserved between the grinding hemisphere 41 and the inner wall of the tank 1, and the width of the grinding channel gradually narrows from near the top of the grinding hemisphere 41 to near the bottom of the grinding hemisphere 41.

[0048] During the falling process of the raw materials, they enter the grinding channel. Inside the grinding channel, the materials are gradually subjected to greater shear force and pressure, which achieves gradual fine grinding of the materials and ensures the uniformity and fineness of the particle size of the final product.

[0049] Reference Figure 2 , Figure 3 and Figure 4 The differential mechanism 5 includes a planet carrier 51, planet gears 52, a ring gear 53, and a sun gear 54. The planet carrier 51 is coaxially fixed with the output shaft of the drive component 12. Multiple planet gears 52 are evenly distributed and rotatably mounted on the planet carrier 51. The ring gear 53 is fixed to the inner wall of the tank 1 and meshes with each planet gear 52. The sun gear 54 is coaxially fixed with the top of the connecting pipe 32 and meshes with each planet gear 52.

[0050] The connecting pipe 32 can achieve a different rotation speed from the planetary carrier 51 under the drive of the drive component 12, thereby realizing differential operation between the drying and grinding mechanisms 4. Specifically, the rotation speed of the stirring rod 35 is greater than that of the material distribution plate 21, which allows the stirring rod 35 to increase the height of the raw material, improve the contact time between the raw material and the hot air, optimize the processing speed and effect of the material in different processing stages, and improve the overall coordination and efficiency of the processing.

[0051] Reference Figure 2 and Figure 3 The bottom of the tank body 1 is provided with a collection chamber 6 for collecting the ground and dried materials. The collection chamber 6 can be drawn and installed inside the side wall of the tank body 1. The processed raw materials can be easily collected and taken out, reducing the residence time of the raw materials in the equipment, reducing the risk of cross-contamination, and also facilitating the cleaning and maintenance of the equipment, thus improving the overall operability and practicality of the equipment.

[0052] The implementation principle of the raw material slurry drying and grinding device in this application embodiment is as follows: When the raw material gradually falls from the guide channel 13 and falls to the distribution plate 21, the rotating distribution plate 21 will gradually screen the raw material on the plate surface. When the raw material falls further, hot air will be sprayed out from each jet nozzle 34. During this process, the stirring rod 35 will further disperse the raw material and also throw the raw material upward, so that the raw material can have more full contact with the hot air. When the raw material is fully dried, it will gradually fall into the grinding channel. When it passes between the grinding hemisphere 41 and the grinding plate 42, it will be ground into particles of the appropriate size and finally fall into the collection bin 6, realizing the integrated processing of raw material drying and grinding.

[0053] The above are all optional embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A drying and grinding apparatus for raw material slurry, characterized in that: The device includes a hollow tank (1), with an inlet (11) at the top. The inner cavity of the tank (1) is provided with a material dispersing mechanism (2), a drying mechanism (3), and a grinding mechanism (4) from top to bottom. The top of the tank (1) is provided with a drive unit (12) that is connected to the material dispersing mechanism (2) and the grinding mechanism (4) respectively. A differential speed mechanism (5) for adjusting the differential speed is provided between the material dispersing mechanism (2) and the grinding mechanism (4).

2. The drying and grinding apparatus for raw material slurry according to claim 1, characterized in that: The material distribution mechanism (2) includes a material distribution disk (21) coaxially sleeved on the output end of the drive member (12). Multiple material dropping grooves (211) are spaced apart circumferentially on the disk surface of the material distribution disk (21). The opening width of the material dropping grooves (211) gradually increases from the output end near the drive member (12) to the output end away from the drive member (12).

3. The drying and grinding apparatus for raw material slurry according to claim 2, characterized in that: A funnel-shaped material guide channel (13) is fixedly installed at the inlet (11), and the lower end of the material guide channel (13) extends to the top of the drop trough (211) near the output end of the drive unit (12).

4. The drying and grinding apparatus for raw material slurry according to claim 2, characterized in that: The drying mechanism (3) includes an air inlet pipe (31), a connecting pipe (32), and an air guide ring (33). The air inlet pipe (31) is installed on the outer wall of the tank (1), and one end extends through the tank (1) into the inner cavity. The connecting pipe (32) is coaxially fixed with the output end of the drive unit (12). A set of air inlets (321) and a set of exhaust holes (322) are provided on the outer wall of the connecting pipe (32) along the circumferential direction. Each air inlet (321) and each exhaust hole (322) are located at different positions along the length of the connecting pipe (32). The air guide ring (33) is fixedly connected to the end of the air inlet pipe (31) and rotates and seals with the connecting pipe (32). Each air inlet (321) is located inside the air guide ring (33), and each air inlet (321) and each exhaust hole (322) are connected.

5. The drying and grinding apparatus for raw material slurry according to claim 4, characterized in that: The drying mechanism (3) further includes a stirring rod (35) and a jet nozzle (34). The stirring rod (35) is hollow and has multiple nozzles corresponding to each exhaust hole (322). Each stirring rod (35) is fixed to the outer wall of the connecting pipe (32) and is connected to the corresponding exhaust hole (322). Multiple jet nozzles (34) are provided. Each stirring rod (35) has multiple jet nozzles (34). Each jet nozzle (34) is facing the surface of the material tray (21) and is connected to the inner cavity of the corresponding stirring rod (35).

6. The drying and grinding apparatus for raw material slurry according to claim 5, characterized in that: The two outer walls of the stirring rod (35) are set as inclined surfaces, and the distance between the two outer walls of the stirring rod (35) near the top is smaller than the distance between the two outer walls near the bottom.

7. The drying and grinding apparatus for raw material slurry according to claim 4, characterized in that: The grinding mechanism (4) includes a grinding hemisphere (41) coaxially fixed to the bottom of the connecting pipe (32) and a plurality of grinding plates (42) fixed at intervals on the inner wall of the tank (1). A grinding channel is reserved between the grinding hemisphere (41) and the inner wall of the tank (1), and the width of the grinding channel gradually narrows from near the top of the grinding hemisphere (41) to near the bottom of the grinding hemisphere (41).

8. The drying and grinding apparatus for raw material slurry according to claim 4, characterized in that: The differential mechanism (5) includes a planet carrier (51), planet gears (52), a gear ring (53), and a sun gear (54). The planet carrier (51) is coaxially fixed with the output shaft of the drive unit (12). Multiple planet gears (52) are evenly distributed and rotatably mounted on the planet carrier (51). The gear ring (53) is fixed to the inner wall of the tank (1) and meshes with each of the planet gears (52). The sun gear (54) is coaxially fixed with the top of the connecting pipe (32) and meshes with each of the planet gears (52).

9. The drying and grinding apparatus for raw material slurry according to claim 1, characterized in that: The bottom of the tank (1) is provided with a collection chamber (6) for collecting the ground and dried material. The collection chamber (6) can be drawn and installed inside the side wall of the tank (1).

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