A multi-solid material spray mixing device

Abstract

This utility model relates to a multi-solid material spray mixing device, including a control system and an extruder and a centrifugal atomizer connected to the control system. A material pipe for conveying materials is connected between the extruder and the centrifugal atomizer. A primary collector is connected to the outlet of the centrifugal atomizer. An air duct is provided on one side of the outlet of the primary collector, and an air blower controlled by the control system is connected to the air duct. A secondary collector and a tertiary collector are arranged sequentially on the air outlet path of the air duct. A nitrogen pipe is provided on the primary collector, and a gas heater controlled by the control system is provided on the nitrogen pipe. An air inlet control valve and a gas pressure sensor connected to the control system are also provided on the nitrogen pipe. A water inlet pipe is provided at the inlet of the extruder and connected to its interior. A water inlet control valve connected to the control system is provided on the water inlet pipe. A water vapor discharge pipe is connected to the primary collector above the outlet of the centrifugal atomizer.

Description

Technical Field

[0001] This utility model relates to the technical field of material mixing devices, specifically to a spray mixing device for multiple solid materials. Background Technology

[0002] In industries such as chemical, pharmaceutical, and food processing, it is often necessary to mix various solid materials to meet production process requirements. Currently, commonly used solid material mixing equipment mainly includes stirring mixers and ribbon mixers. These mixing devices typically add multiple solid materials directly into a mixing container and achieve material mixing through stirring, ribbon conveying, and other methods. However, the aforementioned traditional mixing equipment has certain limitations. First, stirring or ribbon conveying relies on mechanical force to mix materials, which easily leads to "local agglomeration," especially for multi-component, fine-particle materials, making it difficult to achieve uniform mixing. Furthermore, the mixed materials exhibit significant particle size differences, failing to meet the demands of high-precision production. Second, during mechanical mixing, the materials only have simple physical contact, lacking the conditions to promote tight bonding between components, resulting in poor material encapsulation and easy component separation during subsequent processing or use. Additionally, there is a method of mixing a material solution and then atomizing and drying it into particles, but this is only suitable for easily soluble materials, and the drying effect is unsatisfactory when the material solution has a high water content. Utility Model Content

[0003] This invention addresses the above-mentioned technical problems by providing a multi-solid material spray mixing device. Different material particles achieve full and random contact and mixing during atomization, enabling rapid drying of materials and ensuring uniform mixing of multi-component and fine-particle materials. This improves the versatility of the device and promotes the formation of a stable composite structure of mixed particles during the drying process, rather than loose accumulation.

[0004] A multi-solid material spray mixing device includes a control system and extruders and centrifugal atomizers connected to the control system. Several extruders are provided, and each extruder is connected to a material pipe for conveying materials via a centrifugal atomizer. A primary collector is connected to the outlet of the centrifugal atomizer. An exhaust pipe is provided on one side of the outlet of the primary collector, and an exhaust fan controlled by the control system is connected to the exhaust pipe. A secondary collector and a tertiary collector are sequentially arranged along the exhaust path of the exhaust pipe. The bottoms of the primary, secondary, and tertiary collectors are respectively provided with outlets. A nitrogen pipe is provided on the primary collector near the outlet of the centrifugal atomizer, allowing nitrogen to be introduced into the primary collector. A gas heater controlled by the control system is provided on the nitrogen pipe. An inlet control valve and a gas pressure sensor connected to the control system are also provided on the nitrogen pipe. A water inlet pipe is provided at the inlet of the extruder, connecting to its interior. A water inlet control valve connected to the control system is provided on the water inlet pipe. A water vapor discharge pipe is connected to the primary collector above the outlet of the centrifugal atomizer. Specifically, depending on the process requirements, different numbers of extruders can be set up. Water is added to the extruder through the water inlet pipe and mixed with the solid material to form a solid-liquid slurry. This slurry is then transported to a centrifugal atomizer. The centrifugal atomizer rotates at high speed, and under centrifugal force, the material is thrown to all sides to form a uniform mist material flow. High-temperature nitrogen gas further disperses the material, increasing its specific surface area and making the atomized particles finer, more uniform, and more thoroughly mixed. This facilitates full contact and mutual encapsulation between different components. At the same time, the high-temperature dry nitrogen gas carries away the water vapor mixed in the material and discharges it through the water vapor discharge pipe. Finally, the material is discharged through a primary collector, a secondary collector, and a tertiary collector to obtain a dry, uniformly mixed solid mixture with uniform particle size and tightly encapsulated components.

[0005] Furthermore, the system includes a hot water tank, a hot water jacket on the extruder and material pipe, a hot water inlet pipe connecting the hot water jacket and the hot water tank at the extruder's feed inlet, a hot water return pipe connecting the hot water jacket and the hot water tank at the centrifugal atomizer's feed inlet, a hot water inlet valve controlled by the control system on the hot water inlet pipe, a hot water return valve controlled by the control system on the hot water return pipe, an extrusion temperature sensor connected to the control system at the extruder, and a feed temperature sensor at the centrifugal atomizer's feed inlet. Specifically, the hot water jacket spirally wraps around the screw sleeve of the extruder and the outer wall of the material pipe, heating the material through hot water circulation, ensuring the material enters the centrifugal atomizer at a higher temperature (e.g., 60-80℃), which is more conducive to the evaporation and drying of moisture.

[0006] Furthermore, the extruder is equipped with a quantitative feeding hopper controlled by the control system at the feed inlet, and a feeding pressure sensor connected to the control system is installed on the material pipe. By monitoring the feeding pressure on the material pipe through the feeding pressure sensor, the screw speed of the extruder, the water supply of the water control valve, and the discharge amount of the quantitative feeding hopper are adjusted to ensure stable material delivery.

[0007] Furthermore, the quantitative feeding funnel includes a hopper, an electronic scale that monitors the weight of the hopper in real time and is connected to the control system, and a feeding control valve located at the outlet of the hopper and connected to the control system. Specifically, the quantitative feeding funnel also includes a hopper support, and the electronic scale consists of pressure sensors distributed at the four corners of the hopper support. The electronic scale monitors the amount of material input by detecting the decrease in the weight of the hopper in real time, and works with the control system to achieve automatic material input.

[0008] Furthermore, the system includes a cold water tank. The secondary and tertiary collectors are equipped with spiral cooling pipes. A cold water inlet pipe connects the inlet end of the spiral cooling pipe to the cold water tank, and a cold water return pipe connects the outlet end of the spiral cooling pipe to the cold water tank. Both the cold water inlet and return pipes are controlled by a cold water inlet valve and a cold water return valve, respectively. When the cold water inlet valve is open, the cold water in the cold water tank enters the spiral cooling pipes within the secondary and tertiary collectors through the cold water inlet pipe. The cold water circulates within the spiral cooling pipes, absorbing heat from the mixture, and then returns to the cold water tank through the cold water return pipe. The cold water return valve controls the return flow of the cold water. This circulating cooling system ensures that the collected mixture reaches a suitable storage and subsequent processing temperature, preventing material deterioration or performance changes due to excessively high temperatures.

[0009] Furthermore, the primary collector is a conical drying tower, the secondary collector is a cyclone separator, and the tertiary collector is a bag pulse dust collector. The primary, secondary, and tertiary collectors work together to form a stepped processing flow of drying-coarse collection-medium collection-fine collection, ensuring both the dryness and purity of the mixture and improving the material recovery rate from material drying to particle classification and recovery.

[0010] Furthermore, the control system employs a PLC controller and is equipped with a touchscreen display. Operators can intuitively set and adjust various parameters of the device through the touchscreen display, such as the temperature and pressure of the extruder, the speed of the centrifugal atomizer, and the on / off status of each valve.

[0011] Compared with the prior art, the beneficial effects achieved by this utility model are as follows: This device atomizes material slurry into micron-sized fine particles through a centrifugal atomizer under high-speed rotation. Different material particles achieve full and random contact and mixing during the atomization process, avoiding local accumulation caused by mechanical force. At the same time, the nitrogen gas flow in the primary collector further assists the diffusion of material particles, ensuring that multi-component, fine-particle materials can also achieve a uniform mixing effect. This device enhances the binding tightness between components through the synergistic effect of "atomized mixing + nitrogen-protected drying". Centrifugal atomization allows different material particles to come into full contact with each other at a small particle size, increasing the contact area and adsorption force between components; at the same time, nitrogen gas, temperature-controlled by a gas heater, is introduced into the primary collector through a nitrogen pipe. This creates an inert environment to prevent material oxidation and quickly removes excess moisture from the material through hot air, promoting the formation of a stable composite structure in the mixed particles during the drying process, rather than a loose aggregate. This device adopts the "direct extrusion atomization of solid materials" mode, which eliminates the need to dissolve the materials into a solution. It can directly process various types of solid materials, such as those that are difficult to dissolve, heat-sensitive, and have high viscosity, thereby improving the versatility of the device.

[0012] This device uses a water control valve to precisely control the moisture content of the material through the water supply pipe, avoiding excessive moisture in the material and thus avoiding excessive subsequent drying load. Combined with the high-temperature nitrogen gas flow, the material can be dried quickly. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] Figure 2 This is a schematic diagram of the extruder in this utility model.

[0016] The components are as follows: 1. Extruder, 2. Centrifugal atomizer, 3. Material pipe, 4. Primary collector, 5. Exhaust pipe, 6. Exhaust fan, 7. Secondary collector, 8. Tertiary collector, 9. Nitrogen pipe, 10. Gas heater, 11. Water supply pipe, 12. Water vapor discharge pipe, 13. Hot water tank, 14. Hot water jacket, 15. Hot water inlet pipe, 16. Hot water return pipe, 17. Quantitative feeding funnel, 171. Hopper, 172. Electronic scale, 173. Hopper support, 18. Cold water tank, 19. Spiral cooling pipe, 20. Cold water inlet pipe, 21. Cold water return pipe. Detailed Implementation

[0017] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0018] Please see Figure 1-2 A multi-solid material spray mixing device includes a control system and an extruder 1 and a centrifugal atomizer 2 connected to the control system. Several extruders 1 are provided, and each extruder 1 is connected to a material pipe 3 for conveying material via a centrifugal atomizer 2. A primary collector 4 is connected to the outlet of the centrifugal atomizer 2. An exhaust pipe 5 is provided on one side of the outlet of the primary collector 4, and an exhaust fan 6 controlled by the control system is connected to the exhaust pipe 5. A secondary collector 7 and a tertiary collector 8 are sequentially arranged along the air outlet path of the exhaust pipe 5. The bottom portion of the primary collector 4, the secondary collector 7, and the tertiary collector 8... The primary collector 4 has a separate discharge port. Near the discharge port of the centrifugal atomizer 2, there is a nitrogen pipe 9 for introducing nitrogen into the primary collector 4. The nitrogen pipe 9 is equipped with a gas heater 10 controlled by the control system. The nitrogen pipe 9 is also equipped with an inlet control valve DCF9 and a gas pressure sensor P3 connected to the control system. The extruder 1 has a water supply pipe 11 connected to its interior at the inlet. The water supply pipe 11 is equipped with a water supply control valve (DCF10, DCF11) connected to the control system. A water vapor discharge pipe 12 is connected to the primary collector 4 above the discharge port of the centrifugal atomizer 2. Specifically, depending on the process requirements, different numbers of extruders 1 can be set up. Water is added to the extruder 1 through the water inlet pipe 11 and mixed with the solid material to form a solid-liquid slurry. The slurry is then transported to the centrifugal atomizer 2. After the centrifugal atomizer 2 rotates at high speed, the material is thrown to all sides under centrifugal force to form a uniform mist material flow. High-temperature nitrogen gas further disperses the material, increases the specific surface area of ​​the material, and makes the atomized particles finer, more uniform and fully mixed. This is conducive to the full contact and mutual encapsulation between different components. At the same time, the high-temperature dry nitrogen gas carries away the water vapor mixed in the material and is discharged through the water vapor discharge pipe 12. Finally, the material is discharged through the first-stage collector 4, the second-stage collector 7 and the third-stage collector 8 to obtain a dry, uniformly mixed solid mixture with uniform particle size and tightly encapsulated components.

[0019] In this embodiment, a hot water tank 13 is also included. A hot water sleeve 14 is provided on the extruder 1 and the material pipe 3. A hot water inlet pipe 15, connected to the hot water sleeve 14 and the hot water tank 13, is provided at the feed inlet of the extruder 1. A hot water return pipe 16, connected to the hot water sleeve 14 and the hot water tank 13, is provided at the feed inlet of the centrifugal atomizer 2. Hot water inlet pipe 15 is equipped with hot water inlet valves (DCF1, DCF2) controlled by the control system. Hot water return pipe 16 is equipped with hot water return valves (DCF3, DCF4) controlled by the control system. Extrusion temperature sensors (T1, T3) connected to the control system are provided at the extruder 1. Feed temperature sensors (T2, T4) are provided at the feed inlet of the centrifugal atomizer 2. Specifically, the hot water sleeve 14 spirally wraps around the screw sleeve of the extruder 1 and the outer wall of the material pipe 3. Hot water circulation heats the material, ensuring it enters the centrifugal atomizer 2 at a higher temperature (e.g., 60-80°C), which is more conducive to the evaporation and drying of moisture.

[0020] In this embodiment, a quantitative feeding funnel 17 controlled by the control system is provided at the feed inlet of the extruder 1, and a feeding pressure sensor (P1, P2) connected to the control system is provided on the material pipe 3. The feeding pressure on the material pipe 3 is monitored by the feeding pressure sensor (P1, P2), thereby adjusting the screw speed of the extruder 1, the water supply of the water control valve (DCF10, DCF11), and the discharge amount of the quantitative feeding funnel 17 to ensure stable material conveying.

[0021] In this embodiment, the quantitative feeding funnel 17 includes a hopper 171, an electronic scale 172 that detects the weight of the hopper 171 in real time and is connected to the control system, and a feeding control valve DCF 12 located at the discharge port of the hopper 171 and connected to the control system. Specifically, the quantitative feeding funnel 17 also includes a hopper support 173. The electronic scale 172 consists of pressure sensors distributed at the four corners of the hopper support 173. The electronic scale 172 detects the amount of material input by the decrease in weight of the hopper 171 in real time, and works with the control system to achieve automatic material input.

[0022] In this embodiment, a cold water tank 18 is also included. Spiral cooling pipes 19 are installed within the secondary trap 7 and the tertiary trap 8. A cold water inlet pipe 20 connects the inlet end of the spiral cooling pipe 19 to the cold water tank 18, and a cold water return pipe 21 connects the outlet end of the spiral cooling pipe 19 to the cold water tank 18. The cold water inlet pipe 20 is equipped with cold water inlet valves (DCF5, DCF6) controlled by a control system, and the cold water return pipe 21 is equipped with cold water return valves (DCF7, DCF8) controlled by a control system. When the cold water inlet valves (DCF5, DCF6) are opened, the cold water in the cold water tank 18 enters the spiral cooling pipes 19 within the secondary trap 7 and the tertiary trap 8 through the cold water inlet pipe 20. Cold water circulates in the spiral cooling pipe 19, absorbing heat from the mixture, and then returns to the cold water pool 18 through the cold water return pipe 21. The cold water return valves (DCF7, DCF8) control the return flow of the cold water. Through the circulation and cooling of the cold water, the collected mixture reaches a suitable storage and subsequent processing temperature, preventing the material from deteriorating or changing its properties due to excessive temperature.

[0023] In this embodiment, the primary collector 4 is a conical drying tower, the secondary collector 7 is a cyclone separator, and the tertiary collector 8 is a bag filter pulse dust collector. The primary collector 4, the secondary collector 7, and the tertiary collector 8 work together to form a stepped processing flow of drying-coarse collection-medium collection-fine collection, from material drying to particle classification and recovery, which not only ensures the dryness and purity of the mixture, but also improves the material recovery rate.

[0024] In this embodiment, the control system adopts a PLC controller and is equipped with a touch screen display. The operator can intuitively set and adjust various parameters of the device through the touch screen display, such as the temperature and pressure of the extruder 1, the rotation speed of the centrifugal atomizer 2, and the on / off status of each valve.

[0025] The working process of this utility model is as follows: 1. Preparation: Check that all electrical equipment is in a safe operating condition. After confirming safety, turn on the power and check that all sensors, valves, extruder 1, induced draft fan 6, etc. are properly connected to the control system. 2. Setting parameters: Set the switching frequency of the feeding control valve DCF12 and the water control valve (DCF10, DCF11) according to the feeding speed required by the process; set the electronic scale 172 to read the weight of the hopper 171 according to the switching of the feeding control valve DCF12; set the discharge temperature of the extruder 1 and the material pipe 3; set the parameters of the hot water inlet valve (DCF1, DCF2) and the hot water return valve (DCF3, DCF4) controlled by the extrusion temperature sensor (T1, T3) and the feed temperature sensor (T2, T4); set the safety value of the feeding pressure of the material pipe 3; set the rotation speed of the screw of the extruder 1 according to the feeding speed required by the process; set the rotation speed of the centrifugal atomizer 2; set the nitrogen inlet pressure; set the speed of the induced draft fan 6; set the opening of the cold water inlet valve (DCF5, DCF6) and the cold water return valve. 3. Start-up and operation: Start the induced draft fan 6, introduce hot nitrogen, start the centrifugal atomizer 2, introduce hot water into the hot water pipe sleeve to preheat to the process temperature, start the extruder 1, open the cold water inlet valve (DCF5, DCF6) and cold water return valve, switch the feeding control valve DCF12 and the water supply control valve (DCF10, DCF11) according to the process requirements to feed and add water, and turn on the pulse switch of the three-stage collector 8; 4. Shutdown: Stop feeding, stop extruder 1, stop centrifugal atomizer 2, stop hot water supply, stop nitrogen supply, close cold water inlet valve (DCF5, DCF6), cold water return valve, close the pulse switch of the three-stage collector 8, and turn off the induced draft fan 6.

[0026] The beneficial effects of this utility model are as follows: This device uses a centrifugal atomizer 2 to atomize the material slurry into micron-sized fine particles under high-speed rotation. Different material particles achieve full and random contact and mixing during the atomization process, avoiding local accumulation caused by mechanical force. At the same time, the nitrogen gas flow in the primary collector 4 further assists the diffusion of material particles, ensuring that multi-component, fine-particle materials can also achieve a uniform mixing effect. This device enhances the tightness of the binding between components through the synergistic effect of "atomized mixing + nitrogen-protected drying". Centrifugal atomization allows different material particles to come into full contact with each other at a small particle size, increasing the contact area and adsorption force between components; at the same time, nitrogen pipe 9 introduces nitrogen gas controlled by gas heater 10 into the primary collector 4, which on the one hand creates an inert environment to prevent material oxidation, and on the other hand quickly removes excess moisture from the material through hot air, so as to promote the formation of a stable composite structure of mixed particles during the drying process, rather than loose accumulation. This device adopts the "direct extrusion atomization of solid materials" mode, which eliminates the need to dissolve the materials into a solution. It can directly process various types of solid materials, such as those that are difficult to dissolve, heat-sensitive, and have high viscosity, thereby improving the versatility of the device.

[0027] This device uses water control valves (DCF10, DCF11) to control the water supply pipe 11 to precisely control the moisture content of the material, avoiding excessive moisture in the material and resulting in excessive subsequent drying load. Combined with the high-temperature drying nitrogen gas flow, the material can be dried quickly.

[0028] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A multi-solid material spray mixing device, comprising a control system and an extruder and a centrifugal atomizer connected to the control system, characterized in that, The system includes several extruders, each connected to a centrifugal atomizer via a material conveying pipe. A primary collector is connected to the outlet of the centrifugal atomizer. An exhaust pipe is located on one side of the primary collector's outlet, connecting to an exhaust fan controlled by a control system. Secondary and tertiary collectors are sequentially arranged along the exhaust path of the exhaust pipe. Each of the primary, secondary, and tertiary collectors has an outlet at its bottom. A nitrogen pipe is located near the outlet of the centrifugal atomizer on the primary collector, allowing nitrogen to be introduced into it. A gas heater controlled by the control system is installed on the nitrogen pipe, which also includes an inlet control valve and a gas pressure sensor connected to the control system. A water inlet pipe is located at the extruder's inlet, connecting to its interior. A water inlet control valve connected to the control system is installed on the water inlet pipe. A water vapor discharge pipe is connected to the primary collector above the outlet of the centrifugal atomizer.

2. The spray mixing device for multiple solid materials according to claim 1, characterized in that, It also includes a hot water tank, a hot water sleeve on the extruder and material pipe, a hot water inlet pipe at the extruder's feed inlet that connects to the hot water sleeve and the hot water tank, a hot water return pipe at the centrifugal atomizer's feed inlet that connects to the hot water sleeve and the hot water tank, a hot water inlet valve controlled by the control system on the hot water inlet pipe, a hot water return valve controlled by the control system on the hot water return pipe, an extrusion temperature sensor at the extruder connected to the control system, and a feed temperature sensor at the centrifugal atomizer's feed inlet.

3. The spray mixing device for multiple solid materials according to claim 1, characterized in that, The extruder is equipped with a quantitative feeding funnel controlled by the control system at the feed inlet, and a feeding pressure sensor connected to the control system is installed on the material pipe.

4. The spray mixing device for multiple solid materials according to claim 1, characterized in that, The quantitative feeding funnel includes a hopper, an electronic scale that detects the weight of the hopper in real time and is connected to the control system, and a feeding control valve located at the outlet of the hopper and connected to the control system.

5. The spray mixing device for multiple solid materials according to claim 1, characterized in that, It also includes a cold water tank, and the secondary and tertiary traps are equipped with spiral cooling pipes. The inlet end of the spiral cooling pipe is connected to the cold water tank with a cold water inlet pipe, and the outlet end of the spiral cooling pipe is connected to the cold water tank with a cold water return pipe. The cold water inlet pipe is equipped with a cold water inlet valve controlled by the control system, and the cold water return pipe is equipped with a cold water return valve controlled by the control system.

6. A spray mixing device for multiple solid materials according to any one of claims 1-5, characterized in that, The primary collector is a conical drying tower, the secondary collector is a cyclone separator, and the tertiary collector is a bag pulse dust collector.

7. A spray mixing device for multiple solid materials according to any one of claims 1-5, characterized in that, The control system uses a PLC controller and is equipped with a touch screen display.

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