Mixing machine with circulating quick-cooling fluidization function and material mixing method

Abstract

The invention discloses a mixing machine with a circulating quick-cooling fluidization function, which comprises an air compression assembly, a water-cooling heat exchange assembly and a mixing assembly, and the air compression assembly and the water-cooling heat exchange assembly are both connected with the mixing assembly; the mixing assembly comprises a tank body, a dust removal part, a sensing part and a fluidization net airflow mixing part, the top of the tank body is provided with a feeding part which is communicated with an internal fluidization chamber of the tank body, the top of the tank body is provided with the dust removal part which is communicated with an internal cavity of the tank body, and the fluidization net airflow mixing part is arranged at the bottom of the internal cavity of the tank body; the fluidization net airflow mixing part extends out of the tank body and is communicated with the heating assembly, and a discharging part communicated with the outside is arranged at the bottom of the tank body; the air compression assembly is connected with the fluidization net airflow mixing component; the water-cooling heat exchange assembly is connected with the outer wall of the tank body; the mixing machine with the circulating quick-cooling fluidization function is good in cooling effect, high in heat exchange efficiency, integrated in function and capable of effectively avoiding caking and oxidation of materials.

Description

Mixer with circulating rapid cooling fluidization function and material mixing method Technical Field

[0001] This invention relates to the field of mixing equipment technology, and more specifically to a mixer with circulating rapid cooling fluidization function and a method for mixing materials. Background Technology

[0002] A mixer is a mechanical device that uses mechanical force and gravity to uniformly mix two or more materials. During the mixing process, the contact surface area of ​​the materials can be increased to promote chemical reactions and accelerate physical changes. Commonly used mixers are divided into four main categories: gas and low-viscosity liquid mixers, medium- and high-viscosity liquid and paste mixers, and powder and granular solid material mixers.

[0003] Existing airflow mixers utilize compressed air as kinetic energy. Nozzles eject gas into the mixing chamber, where the materials are fluidized under the influence of the airflow. Advantages include avoiding complex mechanical transmissions and the risk of material contamination compared to mechanical mixing equipment. Airflow mixers are suitable for mixing heat-sensitive and fragile materials and are widely used in food, pharmaceutical, chemical, and electronic substrate industries. Existing cold fluidization mixing equipment has the following drawbacks: 1. Lack of a dedicated cooling structure, or the use of built-in coils, leading to scaling, wear, and poor cooling effect; 2. Only providing fluidization mixing function, requiring additional cooling and dust removal equipment; 3. Difficult to apply to high-temperature powders, which tend to clump and fail to meet production requirements; 4. Severe dust generation during feeding and discharging, requiring additional dust removal equipment. Summary of the Invention

[0004] To address the aforementioned problems, the present invention aims to provide a mixer with circulating rapid cooling fluidization function, which has good cooling effect, high heat exchange efficiency, integrated functions, and effectively avoids material agglomeration and oxidation, as well as a method for mixing materials.

[0005] According to one aspect of the present invention, a mixer with a circulating rapid cooling fluidization function is provided, comprising: an air compressor assembly, a water-cooled heat exchange assembly, and a mixing assembly, wherein both the air compressor assembly and the water-cooled heat exchange assembly are connected to the mixing assembly; the mixing assembly comprises: a tank, a dust removal component, a sensing component, and a fluidized bed airflow mixing component, wherein a feeding component is provided at the top of the tank and the feeding component communicates with the internal fluidization chamber of the tank, a dust removal component is provided at the top of the tank and communicates with the internal cavity of the tank, the fluidized bed airflow mixing component is provided at the bottom of the internal cavity of the tank and extends out of the tank and communicates with a heating assembly, and a discharge component communicating with the outside is provided at the bottom of the tank; the air compressor assembly is connected to the fluidized bed airflow mixing component, and the water-cooled heat exchange assembly is connected to the outer wall of the tank. The powder inside the tank is fluidized and suspended by an air compressor component. During the fluidization process, the powder comes into full contact with the tank wall, achieving rapid and uniform cooling. The powder then exchanges heat with the tank wall through a water-cooled heat exchange component. After absorbing the heat from the powder inside the tank, the powder flows back to the insulated water tank from the bottom outlet, completing a closed-loop cooling cycle. The mixing component and the fluidized spraying logic controlled by the PLC controller achieve flexible mixing of the particulate material, reducing the breakage rate and improving the mixing uniformity and sealing reliability.

[0006] In some embodiments, the feeding component includes a feed inlet and a first valve, the first valve opening and closing the feed inlet, which communicates with the internal cavity. The feed inlet facilitates the introduction of material into the fluidization chamber inside the tank, while the first valve facilitates remote control of material delivery.

[0007] In some embodiments, the discharge component includes a discharge port and a star-shaped feed pipe. The discharge port is connected to the bottom of the tank, and a second valve is provided at the discharge port. The discharge port is also connected to the star-shaped feed pipe. The powder in a fluidized state through the star-shaped feed pipe is stably discharged by the star-shaped feeder, avoiding blockage of the discharge port. At the same time, the second valve facilitates remote control of material collection.

[0008] In some embodiments, the fluidized bed airflow mixing component includes: a metal screen, an air inlet, an air inlet ring pipe, and a discharge valve assembly. An air inlet ring pipe is located on the outer bottom of the metal screen, and an air inlet is mounted on the air inlet ring pipe. The air inlet is connected to an air compressor assembly, and the air inlet ring pipe blows air towards the bottom of the metal screen. A discharge valve assembly is located inside the metal screen. The discharge valve assembly includes: a base, a first cylinder, and a seal. The first cylinder is located inside the conical metal screen, and a seal is located at the bottom of the first cylinder. The base is located at the top of the discharge port. The first cylinder drives the seal to conform to the base, thereby opening and closing the discharge port. By employing a conical sintered metal mesh screen and a multi-inlet airflow design, compressed air is evenly dispersed through the screen to form a flexible airflow field, avoiding direct contact between the material and mechanical parts, thus solving the problem of mixing and crushing particulate materials, and reducing the crushing rate by more than 80%.

[0009] In some embodiments, the metal screen is a conical sintered metal mesh screen, which is welded and fixed to the bottom of the tank.

[0010] In some embodiments, the air inlet includes: a first pneumatic ball valve, a first flange, a second pneumatic ball valve, a second flange, a third pneumatic ball valve, a third flange, a fourth pneumatic ball valve, and a fourth flange. The air inlet ring pipe is rectangular or square, and the first flange, second flange, third flange, and fourth flange are sequentially arranged on the four sides of the ring air inlet pipe. The first flange is equipped with a first pneumatic ball valve and is connected to the air compressor assembly. The second flange is equipped with a second pneumatic ball valve and is connected to the air compressor assembly. The third flange is equipped with a third pneumatic ball valve and is connected to the air compressor assembly. The fourth flange is equipped with a fourth pneumatic ball valve and is connected to the air compressor assembly. The air inlet, through four sets of air inlets cooperating with the smooth fluidization chamber, eliminates dead zones in the airflow, achieving a material mixing uniformity of over 98%, and improving the mixing efficiency by 30%-50% compared to traditional devices.

[0011] In some embodiments, the dust removal component includes: a dust collector, a pneumatic ball valve, a blowpipe, a first pulse solenoid valve, an air tank, and a filter element. The bottom of the dust collector and the top of the tank are connected by a chuck. An induced draft fan and a fifth solenoid valve are installed on the top of the dust collector, with the fifth solenoid valve positioned between the induced draft fan and the dust collector. The bottom of the pneumatic ball valve is connected to the blowpipe, and the first pulse solenoid valve is installed on the blowpipe. The first pulse solenoid valve is connected to the air tank, which is connected to an external air source. The filter element is removably installed inside the dust collector. The induced draft fan and dust collector remove dust generated during the feeding process in real time, preventing dust from escaping. The collected dust can be returned to the tank through a return structure, achieving material recovery.

[0012] In some embodiments, the sensing components include a pressure sensor and a temperature sensor, both of which are mounted on the tank and communicate with the fluidization chamber. The pressure and temperature sensors accurately detect temperature and pressure, and the cooling water flow rate is controlled by adjusting the opening of a pneumatic ball valve, thereby precisely controlling the powder temperature.

[0013] In some embodiments, the air compression assembly includes an air compressor and a first air tank. The output end of the air compressor is connected to the first air tank, and the first air tank is connected to a filter assembly. The filter assembly includes an oil separator, a first filter, a second filter, and a sterilizing filter arranged sequentially on a pipeline. The rear end of the sterilizing filter is connected to a refrigerated dryer. The output pipeline of the refrigerated dryer is connected to an air inlet. Air is compressed by the air compressor and stored in the first air tank, and the compressed air is filtered by the filter assembly.

[0014] In some embodiments, the water-cooled heat exchange assembly includes: a coil, an insulation layer, a coil inlet valve, a coil outlet valve, and a water-cooling section. The coil is arranged around the outer wall of the tank, and the outer side of the coil is covered with an insulation layer. A coil inlet valve and a coil outlet valve are located at the bottom of the coil. The water-cooling section connects the coil inlet valve and the coil outlet valve. The water-cooling section includes: a cooling tower, a compressor, a condenser, an evaporator, and an insulated water tank. The cooling tower is connected to makeup water and is connected to the evaporator. The evaporator is connected to the insulated water tank. The coil outlet valve and the coil inlet valve are connected to the insulated water tank. The compressor is connected to the condenser and the evaporator. The water-cooled heat exchange assembly is used to rapidly and accurately cool the outer wall of the tank.

[0015] According to one aspect of the present invention, a method for mixing materials is provided, comprising the following steps: S1, preparation, including material preparation and equipment preparation; S2, feeding, opening a first valve, allowing high-temperature powder to enter the fluidization chamber inside the mixer tank through the feed inlet; S3, simultaneously with step S2, starting the dust collector on the top of the silo and the induced draft fan to remove dust generated during the feeding process in real time, preventing dust from escaping; S4, starting the water-cooled heat exchange system, a centrifugal pump delivering low-temperature cold water from the insulated water tank to the inlet coil outside the mixer tank, the cold water flowing from top to bottom, exchanging heat with the tank wall, absorbing heat from the powder inside the tank, and then flowing back to the insulated water tank from the bottom outlet, completing the closure. S5. Start the air compressor unit. High-pressure compressed air enters the fluidization chamber through the bottom air inlet ring pipe and is evenly sprayed through the metal screen in the chamber, so that the powder in the tank is in a fluidized suspension state. During the fluidization process, the powder is in full contact with the tank wall to achieve rapid and uniform cooling. S6. The sensing component monitors the tank temperature in real time and controls the cooling water flow by adjusting the opening of the pneumatic ball valve to accurately control the powder temperature. S7. Discharge: When the powder temperature and mixing uniformity meet the process requirements, the first cylinder drives the seal to open the discharge port. At the same time, the second valve opens and the fluidized powder is stably discharged through the star-shaped feeder to avoid the discharge port from being blocked. S8. Repeat S2-S7 for processing.

[0016] Compared with existing technologies, this invention has the advantages of better cooling effect, higher heat exchange efficiency, integrated functions, and effective prevention of material agglomeration and oxidation. The air compressor component fluidizes the powder inside the tank, ensuring full contact between the powder and the tank wall during fluidization, achieving rapid and uniform cooling. A water-cooled heat exchange component absorbs heat from the powder and returns it to the insulated water tank from the bottom outlet, completing a closed-loop cooling cycle. A mixing component, programmed with a PLC controller to control the fluidized bed spraying logic, achieves flexible mixing of particulate materials, reducing breakage rate and improving mixing uniformity and sealing reliability. The feed inlet facilitates the introduction of material into the fluidization chamber inside the tank, while the first valve allows for remote control of material feeding. The fluidized powder is stably discharged through a star-shaped feeder, preventing outlet blockage, and the second valve allows for remote control of material collection. The use of a conical sintered metal mesh screen and a multi-inlet airflow design ensures compressed air is evenly distributed through the screen. After dispersion, a flexible airflow field is formed, avoiding direct contact between materials and mechanical parts, thus solving the problem of mixing and crushing particulate materials and reducing the crushing rate by more than 80%. The air inlet section, through four sets of air inlets and a smooth fluidization chamber, eliminates dead airflow angles, achieving a material mixing uniformity of over 98%, and improving mixing efficiency by 30%-50% compared to traditional devices. The induced draft fan and dust collector remove dust generated during the feeding process in real time, preventing dust from escaping. The collected dust can be returned to the tank through the return structure, realizing material recovery. The temperature and pressure are accurately detected by pressure and temperature sensors, and the cooling water flow is controlled by adjusting the opening of the pneumatic ball valve, accurately controlling the powder temperature. The air is compressed by an air compressor and stored in the first air storage tank, and the compressed air is filtered by a filter assembly. The outer wall of the tank is rapidly and accurately cooled using a water-cooled heat exchange assembly. Attached Figure Description

[0017] Figure 1 is a structural schematic diagram of the mixer with circulating rapid cooling fluidization function of the present invention; Figure 2 is a structural schematic diagram of the air compressor assembly of the mixer with circulating rapid cooling fluidization function of the present invention; Figure 3 is a structural schematic diagram of the air compressor assembly of the mixer with circulating rapid cooling fluidization function of the present invention; Figure 4 is a structural schematic diagram of the water-cooled heat exchange assembly of the mixer with circulating rapid cooling fluidization function of the present invention; Figure 5 is a structural schematic diagram of the fluidizing net airflow mixing component of the mixer with circulating rapid cooling fluidization function of the present invention; Figure 6 is a structural schematic diagram of the discharge valve assembly of the mixer with circulating rapid cooling fluidization function of the present invention; Figure 7 is a structural schematic diagram of the air inlet of the mixer with circulating rapid cooling fluidization function of the present invention; Figure 8 is a structural schematic diagram of the dust removal component of the mixer with circulating rapid cooling fluidization function of the present invention. Detailed Implementation

[0018] The present invention will now be described in detail with reference to the embodiments shown in the accompanying drawings. However, it should be noted that these embodiments are not intended to limit the present invention. Equivalent transformations or substitutions in function, method, or structure made by those skilled in the art based on these embodiments are all within the scope of protection of the present invention.

[0019] In the description of this invention, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection" and "linking" should be interpreted broadly. For example, they can refer to mechanical or electrical connections, or internal connections between two components. They can be direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the terms according to the specific circumstances.

[0020] As shown in Figure 1, the mixer with circulating rapid cooling fluidization function of the present invention includes: an air compressor assembly 1, a water-cooled heat exchange assembly 2, and a mixing assembly 3. Both the air compressor assembly 1 and the water-cooled heat exchange assembly 2 are connected to the mixing assembly 3. As shown in Figure 2, the mixing assembly 3 includes: a tank 4, a dust removal component 5, a sensing component 6, and a fluidized bed airflow mixing component 7. A feeding component 8 is provided at the top of the tank 4 and the feeding component 8 is connected to the internal fluidization chamber 41 of the tank 4. A dust removal component 5 is provided at the top of the tank 4 and is connected to the internal cavity of the tank 4. The fluidized bed airflow mixing component 7 is provided at the bottom of the internal cavity of the tank 4 and extends out of the tank 4 to be connected to the heating component. A discharge component 9 connected to the outside is provided at the bottom of the tank 4. The air compressor assembly 1 is connected to the fluidized bed airflow mixing component 7, and the water-cooled heat exchange assembly 2 is connected to the outer wall of the tank 4. The air compressor component 1 fluidizes and suspends the powder inside the tank, allowing it to fully contact the tank walls during fluidization, thus achieving rapid and uniform cooling. The water-cooled heat exchange component 2 exchanges heat with the tank walls, absorbing the heat from the powder inside the tank, and then flows back to the insulated water tank 255 from the bottom outlet, completing a closed-loop cooling cycle. The mixing component 3, along with the fluidized spraying logic programmed by the PLC controller, achieves flexible mixing of the particulate material, reducing the breakage rate and improving mixing uniformity and sealing reliability.

[0021] As shown in Figure 3, the air compressor assembly 1 includes an air compressor 11 and a first air tank 12. The output end of the air compressor 11 is connected to the first air tank 12, and the first air tank 12 is connected to a filter assembly 13. The air compressor 11 compresses the air and stores it in the first air tank 12, and the filter assembly 13 filters the compressed air.

[0022] The filter assembly 13 includes: an oil remover 131, a first filter 132, a second filter 133, and a sterilizing filter 134 arranged sequentially on the pipeline. The rear end of the sterilizing filter 134 is connected to a refrigerated dryer 135. Since compressed air is needed to coat and mix materials, but for pharmaceuticals and food, the oil, impurities, and bacteria contained in the air can directly contaminate the coated materials, thus filtration is necessary.

[0023] The output pipe of the refrigerated dryer 135 is connected to the air inlet 72. The refrigerated dryer 135 removes excess moisture from the compressed air. Since the powder needs to be fluidized and cooled, excess moisture will cause the powder to be impure and affect its quality.

[0024] As shown in Figure 4, the water-cooled heat exchange component 2 includes: a coil 21, an insulation layer 22, a coil inlet valve 23, a coil outlet valve 24, and a water-cooling section 25. The coil 21 is arranged around the outer wall of the tank body 4, and the outer side of the coil 21 is covered with the insulation layer 22. The coil inlet valve 23 and the coil outlet valve 24 are arranged at the bottom of the coil 21. The water-cooling section 25 connects the coil inlet valve 23 and the coil outlet valve 24. The powder is cooled by the coil 21 surrounding the outer wall of the tank body 4, and the water-cooling cooling is uniform and rapid.

[0025] The water-cooled section 25 includes: a cooling tower 251, a compressor 252, a condenser 253, an evaporator 254, and an insulated water tank 255. The cooling tower 251 is connected to makeup water, and the evaporator 254 is connected to the insulated water tank 255. A coil outlet valve 24 and a coil inlet valve 23 are connected to the insulated water tank 255. The compressor 252 is connected to the condenser 253 and the evaporator 254. The water-cooled heat exchange assembly 2 rapidly and precisely cools the outer wall of the tank 4. Pressure gauges, water pumps, and filters are also installed in the pipeline.

[0026] The feeding component 8 includes a feed inlet 81 and a first valve 82. The first valve 82 opens and closes the feed inlet 81, which is connected to the internal cavity. The feed inlet 81 facilitates the feeding of materials into the fluidization chamber 41 inside the tank 4, while the first valve 82 facilitates remote control of material feeding.

[0027] The discharge component 9 includes a discharge port 91 and a star-shaped feed pipe 92. The bottom of the tank body 4 is connected to the discharge port 91, which is equipped with a second valve 93. The discharge port 91 is also connected to the star-shaped feed pipe 92. The powder in a fluidized state through the star-shaped feed pipe 92 is stably discharged by the star feeder, avoiding blockage of the discharge port 91. At the same time, the second valve 93 facilitates remote control of material collection.

[0028] As shown in Figure 5, the fluidized bed airflow mixing component 7 includes: a metal screen 71, an air inlet 72, an air inlet ring pipe 73, and a discharge valve assembly 74. The air inlet ring pipe 73 is provided on the outer side of the bottom of the metal screen 71, and the air inlet 72 is provided on the air inlet ring pipe 73. The air inlet 72 is connected to the air compressor assembly 1. The air inlet ring pipe 73 blows air to the bottom of the metal screen 71. The discharge valve assembly 74 is provided inside the metal screen 71. As shown in Figure 6, the discharge valve assembly 74 includes: a base 741, a first cylinder 742, and a seal 743. The first cylinder 742 is provided inside the cone valve metal screen 71. The seal 743 is provided at the bottom of the first cylinder 742. The base 741 is provided at the top of the discharge port 91. The first cylinder 742 drives the seal 743 to fit against the base 741 and then open and close the discharge port 91. By adopting a conical metal sintered mesh screen and a multi-inlet airflow design, compressed air is evenly dispersed through the screen to form a flexible airflow field, avoiding direct contact between materials and mechanical parts, thus solving the problem of mixing and crushing particulate materials and reducing the crushing rate by more than 80%.

[0029] The metal screen 71 is a conical sintered metal mesh screen, which is welded and fixed to the bottom of the tank 4.

[0030] As shown in Figure 7, the air intake section 72 includes: a first pneumatic ball valve 721, a first flange 722, a second pneumatic ball valve 723, a second flange 724, a third pneumatic ball valve 725, a third flange 726, a fourth pneumatic ball valve 727, and a fourth flange 728. The air intake ring pipe 73 is rectangular or square. The first flange 722, the second flange 724, the third flange 726, and the fourth flange 728 are arranged sequentially on the four sides of the ring air intake pipe. The first flange 722 is equipped with the first pneumatic ball valve 721 and is connected to the air compressor assembly 1. The second flange 724 is equipped with the second pneumatic ball valve 723 and is connected to the air compressor assembly 1. The third flange 726 is equipped with the third pneumatic ball valve 725 and is connected to the air compressor assembly 1. The fourth flange 728 is equipped with the fourth pneumatic ball valve 727 and is connected to the air compressor assembly 1. The air inlet 72, through four sets of air inlets, cooperates with the smooth fluidization chamber 41 to eliminate dead zones in airflow, achieving a material mixing uniformity of over 98%, and improving the mixing efficiency by 30%-50% compared to traditional devices. The air inlet ring pipe 73 is equipped with an air outlet aligned with the metal screen 71.

[0031] As shown in Figure 8, the dust removal component 5 includes: a dust collector 51, a pneumatic ball valve 52, a blowpipe 53, a first pulse solenoid valve 54, an air tank 55, and a filter element 56. The bottom of the dust collector 51 and the top of the tank 4 are connected by a chuck. An induced draft fan 57 and a fifth solenoid valve 58 are installed on the top of the dust collector 51. The fifth solenoid valve 58 is located between the induced draft fan 57 and the dust collector 51. The bottom of the pneumatic ball valve 52 is connected to the blowpipe 53. The first pulse solenoid valve 54 is installed on the blowpipe 53 and is connected to the air tank 55. The air tank 55 is connected to an external air source. The filter element 56 is detachably installed inside the dust collector 51. The induced draft fan 57 and the dust collector 51 remove dust generated during the feeding process in real time, preventing dust from escaping. At the same time, the dust collected by the induced draft fan 57 through the pipe and the feed inlet 81 can be sent back to the tank 4 through the return structure to realize material recovery.

[0032] The sensing component 6 includes a pressure sensor 61 and a temperature sensor 62, both of which are mounted on the tank 4 and connected to the fluidization chamber 41. The pressure sensor 61 and temperature sensor 62 accurately detect temperature and pressure, and the cooling water flow rate is controlled by adjusting the opening of the pneumatic ball valve 52, thereby precisely controlling the powder temperature.

[0033] According to one aspect of the present invention, a material mixing method is provided, comprising the following steps: S1, preparation, including material preparation and equipment preparation; S2, feeding, opening the first valve 82, allowing high-temperature powder to enter the fluidization chamber 41 inside the mixer tank 4 through the feed inlet 81; S3, while performing steps S2, starting the dust collector 51 on the top of the silo and the induced draft fan 57 to remove dust generated during the feeding process in real time, preventing dust from escaping; S4, starting the water-cooled heat exchange system, where a centrifugal pump delivers low-temperature cold water from the insulated water tank 255 to the inlet coil 21 outside the mixer tank 4, where the cold water flows from top to bottom, exchanging heat with the tank wall 4, absorbing heat from the powder inside the tank, and then flowing back to the insulated water tank 255 from the bottom outlet, completing a closed-loop circulation. S5. Start the air compressor unit. High-pressure compressed air enters the fluidization chamber 41 through the bottom air inlet ring pipe 73 and is evenly sprayed through the metal screen 71 in the chamber, so that the powder in the tank 4 is in a fluidized suspension state. During the fluidization process, the powder is in full contact with the wall of the tank 4 to achieve rapid and uniform cooling. S6. The sensor component 6 monitors the temperature of the tank 4 in real time and controls the cooling water flow by adjusting the opening of the pneumatic ball valve 52 to accurately control the powder temperature. S7. Discharge: When the powder temperature and mixing uniformity meet the process requirements, the first cylinder 742 drives the sealing component 743 to open the discharge port 91. At the same time, the second valve 93 opens and the fluidized powder is stably discharged through the star-shaped feeder to avoid blockage of the discharge port 91. S8. Repeat S2-S7 for processing.

[0034] Implementation Method 1: Taking the processing temperature of chemical powder at 120°C as an example, follow the steps below.

[0035] S1. Preparation: Material preparation and equipment preparation; S2. Feeding: Open the first valve 82, and 120℃ chemical powder enters the fluidization chamber 41 inside the mixer tank 4 through the feed inlet 81; S3. Simultaneously with step S2, start the dust collector 51 on the top of the silo and the induced draft fan 57 to remove dust generated during the feeding process in real time, preventing dust from escaping; S4. Start the water cooling heat exchange system: The centrifugal pump delivers low-temperature cold water from the insulated water tank 255 to the inlet coil 21 outside the mixer tank 4. The cold water flows from top to bottom, exchanging heat with the tank wall 4, absorbing the heat from the powder inside the tank, and then flows back to the insulated water tank 255 from the bottom outlet, completing the closed-loop cooling. The inlet water temperature of the water cooling system is controlled at 20℃, the outlet water temperature is ≤35℃, and the cooling water flow rate is 4m³ / h; S5. Start the air compressor unit: High-pressure compressed air enters the fluidization chamber 41 through the bottom air inlet ring pipe 73. The powder is evenly sprayed through the metal screen 71 in the chamber, so that the powder in the tank 4 is in a fluidized suspension state. During the fluidization process, the powder is in full contact with the wall of the tank 4, achieving rapid and uniform cooling. The fluidized air compressor unit outputs a pressure of 0.6MPa and an air flow rate of 1.2m³ / min. S6: The sensor component 6 monitors the temperature of the tank 4 in real time and controls the cooling water flow rate by adjusting the opening of the pneumatic ball valve 52 to accurately control the powder temperature. Within 30 minutes of operation, the powder temperature in the tank is reduced to below 45℃, the mixing uniformity reaches more than 99%, and the dust emission concentration is less than 10mg / m³. S7: Discharge. When the powder temperature and mixing uniformity meet the process requirements, the first cylinder 742 drives the sealing component 743 to open the discharge port 91. At the same time, the second valve 93 opens and the fluidized powder is stably discharged through the star-shaped feeder to avoid blockage of the discharge port 91. S8: Repeat S2-S7 for processing.

[0036] This invention solves the problems of traditional fluidized mixing equipment, which usually only has fluidized mixing function and lacks a targeted cooling structure. When processing high-temperature powders, problems such as agglomeration, oxidation, and poor flowability caused by excessively high powder temperature are easily encountered. Some equipment adopts the design of built-in cooling coil 21, which can achieve cooling, but the coil 21 is prone to wear due to direct friction with the powder, and the powder is easy to adhere to the surface of the coil 21 to form a heat insulation layer, reducing the cooling efficiency. At the same time, traditional equipment generates serious dust during the feeding and discharging process, which is difficult to meet environmental emission requirements.

[0037] Meanwhile, this invention is applicable to the rapid cooling, uniform mixing and continuous discharge of high-temperature powders, which greatly improves work efficiency.

[0038] The above descriptions are merely some embodiments of the present invention. It should be noted that those skilled in the art can make other modifications and improvements without departing from the inventive concept of the present invention, and these all fall within the protection scope of the present invention.

Claims

1. A mixer with circulating rapid cooling fluidization function, characterized in that, include: The system comprises an air compressor assembly, a water-cooled heat exchange assembly, and a mixing assembly, wherein the air compressor assembly and the water-cooled heat exchange assembly are both connected to the mixing assembly. The mixing assembly includes a tank, a dust removal component, a sensing component, and a fluidized bed airflow mixing component. A feeding component is located at the top of the tank and communicates with the internal fluidization chamber of the tank. A dust removal component is located at the top of the tank and communicates with the internal cavity of the tank. The fluidized bed airflow mixing component is located at the bottom of the internal cavity of the tank and extends out of the tank to communicate with a heating assembly. A discharge component communicating with the outside is located at the bottom of the tank. The air compressor assembly is connected to the fluidized bed airflow mixing component, and the water-cooled heat exchange assembly is connected to the outer wall of the tank.

2. The mixer with circulating rapid cooling fluidization function according to claim 1, characterized in that, The feeding component includes a feeding port and a first valve, wherein the first valve opens and closes the feeding port, and the feeding port is connected to the internal cavity.

3. The mixer with circulating rapid cooling fluidization function according to claim 2, characterized in that, The discharge component includes a discharge port and a star-shaped discharge pipe. The discharge port is connected to the bottom of the tank. A second valve is provided at the discharge port. The discharge port is also connected to the star-shaped discharge pipe.

4. The mixer with circulating rapid cooling fluidization function according to claim 3, characterized in that, The fluidized bed airflow mixing component includes: a metal screen, an air inlet, an air inlet ring pipe, and a discharge valve assembly. The air inlet ring pipe is provided on the outer bottom of the metal screen, and the air inlet is provided on the air inlet ring pipe. The air inlet is connected to an air compressor assembly. The air inlet ring pipe blows air to the bottom of the metal screen. The discharge valve assembly is provided inside the metal screen. The discharge valve assembly includes: a base, a first cylinder, and a seal. The first cylinder is provided inside the cone valve metal screen, and a seal is provided at the bottom of the first cylinder. The base is provided at the top of the discharge port. The first cylinder drives the seal to fit against the base, thereby opening and closing the discharge port.

5. The mixer with circulating rapid cooling fluidization function according to claim 4, characterized in that, The metal screen is a conical sintered metal mesh screen, which is welded and fixed to the bottom of the tank.

6. The mixer with circulating rapid cooling fluidization function according to claim 4, characterized in that, The air intake section includes: a first pneumatic ball valve, a first flange, a second pneumatic ball valve, a second flange, a third pneumatic ball valve, a third flange, a fourth pneumatic ball valve, and a fourth flange. The air intake ring pipe is rectangular or square. The first flange, the second flange, the third flange, and the fourth flange are arranged sequentially on the four sides of the annular air intake pipe. The first flange is provided with a first pneumatic ball valve and is connected to the air compressor assembly. The second flange is provided with a second pneumatic ball valve and is connected to the air compressor assembly. The third flange is provided with a third pneumatic ball valve and is connected to the air compressor assembly. The fourth flange is provided with a fourth pneumatic ball valve and is connected to the air compressor assembly.

7. The mixer with circulating rapid cooling fluidization function according to any one of claims 1-6, characterized in that, The dust removal components include: a dust collector, a pneumatic ball valve, a blowpipe, a first pulse solenoid valve, an air tank, and a filter element. The bottom of the dust collector and the top of the tank are connected by a chuck. An induced draft fan and a fifth solenoid valve are installed on the top of the dust collector. The fifth solenoid valve is located between the induced draft fan and the dust collector. The bottom of the pneumatic ball valve is connected to the blowpipe. The first pulse solenoid valve is installed on the blowpipe. The first pulse solenoid valve is connected to the air tank. The air tank is connected to an external air source. The filter element is detachably installed inside the dust collector.

8. The mixer with circulating rapid cooling fluidization function according to any one of claims 1-6, characterized in that, The sensing components include a pressure sensor and a temperature sensor, both of which are mounted on the tank and communicate with the fluidization chamber.

9. The mixer with circulating rapid cooling fluidization function according to any one of claims 1-6, characterized in that, The air compressor assembly includes an air compressor and a first air tank. The output end of the air compressor is connected to the first air tank, and the first air tank is connected to a filter assembly. The filter assembly includes an oil separator, a first filter, a second filter, and a sterilizing filter arranged sequentially on a pipeline. The rear end of the sterilizing filter is connected to a refrigerated dryer. The output pipeline of the refrigerated dryer is connected to the air inlet.

10. The mixer with circulating rapid cooling fluidization function according to any one of claims 1-6, characterized in that, The water-cooled heat exchange assembly includes: a coil, an insulation layer, a coil inlet valve, a coil outlet valve, and a water-cooling section. The coil is arranged around the outer wall of the tank, and the outer side of the coil is covered with an insulation layer. A coil inlet valve and a coil outlet valve are located at the bottom of the coil. The water-cooling section is connected to the coil inlet valve and the coil outlet valve. The water-cooling section includes: a cooling tower, a compressor, a condenser, an evaporator, and an insulated water tank. The cooling tower is connected to makeup water and the evaporator. The evaporator is connected to the insulated water tank. The coil outlet valve and the coil inlet valve are connected to the insulated water tank. The compressor is connected to the condenser and the evaporator.

11. A method for mixing materials using the mixer according to any one of claims 1-10, characterized in that, Includes the following steps: S1. Preparation: Material preparation and equipment preparation; S2. Feeding: Open the first valve, and the high-temperature powder enters the fluidization chamber inside the mixer tank through the feed inlet; Simultaneously with steps S3 and S2, the dust collector and induced draft fan on the top of the silo are activated to remove dust generated during the feeding process in real time, preventing dust from escaping. In step S4, the water-cooled heat exchange system is activated. A centrifugal pump delivers low-temperature cold water from the insulated water tank to the inlet coil outside the mixer tank. The cold water flows from top to bottom, exchanging heat with the tank wall and absorbing heat from the powder inside the tank before returning to the insulated water tank from the bottom outlet, completing a closed-loop cooling cycle. In step S5, the air compressor unit is activated. High-pressure compressed air enters the fluidization chamber through the bottom air inlet ring pipe. The metal screen inside the chamber is evenly sprayed in, causing the powder in the tank to be in a fluidized suspension state. During the fluidization process, the powder comes into full contact with the tank wall, achieving rapid and uniform cooling; S6, the sensing component monitors the tank temperature in real time, and controls the cooling water flow by adjusting the opening of the pneumatic ball valve to accurately control the powder temperature; S7, discharge, when the powder temperature and mixing uniformity meet the process requirements, the first cylinder drives the sealing element to open the discharge port, and at the same time the second valve opens the fluidized powder to be stably discharged through the star-shaped feeder, avoiding blockage of the discharge port; S8. Repeat S2-S7 for processing.

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