Airflow mixing device with positive and negative pressure conveying
By using an airflow mixing device with positive and negative pressure conveying, the problems of high energy consumption, uneven mixing, and dust pollution of mixers have been solved, achieving efficient and clean mixing of powder materials and improving mixing uniformity and production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU LIRAT ENVIRONMENTAL PROTECTION MACHINERY EQUIPMENT MANUFACTURING CO LTD
- Filing Date
- 2025-05-19
- Publication Date
- 2026-04-28
AI Technical Summary
Existing airflow mixers suffer from high energy consumption, long mixing time, insufficient mixing uniformity, and serious dust pollution when mixing powder materials, especially for materials with different densities and properties.
The device employs an airflow mixing unit with positive and negative pressure conveying. The negative pressure component smoothly draws in materials, while the pressurization component generates a powerful positive pressure airflow. Combined with the airflow mixing component and the dust removal component, it achieves efficient, uniform mixing and clean conveying of materials.
It improves mixing uniformity, reduces material loss and environmental pollution, shortens mixing time, improves production efficiency, and ensures accurate material delivery in complex pipeline layouts.
Smart Images
Figure CN224167369U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of mixing equipment, and more specifically relates to an airflow mixing device with positive and negative pressure conveying. 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 and mixed 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.
[0004] In many industrial production processes, such as chemical, materials, food, and pharmaceutical industries, it is often necessary to mix and coat powder materials. Traditional mixing and coating equipment has many shortcomings:
[0005] 1. High energy consumption and long mixing time: Some traditional equipment requires a lot of energy for material conveying and mixing, and the mixing time is relatively long.
[0006] 2. Insufficient uniformity in the mixing of special materials: For granular, powdery, or materials of different densities and properties, the mixing effect is poor, and the CV value (coefficient of variation) of the mixing uniformity exceeds 8%.
[0007] 3. High dust levels: Existing mixing equipment generates significant dust when handling powdery materials. Utility Model Content
[0008] To address the aforementioned problems, this invention provides an airflow mixing device with positive and negative pressure conveying, which offers high working efficiency, high mixing uniformity, clean production environment, and energy savings.
[0009] According to one aspect of the present invention, an airflow mixing device with positive and negative pressure conveying includes: an air compressor assembly, a booster assembly, a negative pressure assembly, and an airflow mixing assembly. The air compressor assembly is connected to the lower part of the airflow mixing assembly, the booster assembly is connected to the airflow mixing assembly, and the negative pressure assembly is connected to the top of the airflow mixing assembly.
[0010] The airflow mixing assembly includes: a tank, a dust removal component, and an airflow mixing component. A feeding component is provided at the top of the tank and the feeding component is connected to the internal cavity of the tank. A dust removal component is provided at the top of the tank and is connected to the internal cavity of the tank. The airflow mixing component is located at the bottom of the internal cavity of the tank and extends out of the tank to be connected to the compressed air intake. A discharge component connected to the outside is provided at the bottom of the tank.
[0011] The pressurization component is connected to the discharge component, and the negative pressure component is connected to the dust removal component. Through the negative pressure component, the material is smoothly drawn into the conveying pipe from the inlet and then smoothly enters the mixing chamber. This conveying method effectively avoids the problem of dust flying during the conveying process, not only reducing material loss but also significantly reducing pollution to the production environment. When the pressurization component starts working, it generates a strong positive pressure airflow, propelling the material in an orderly manner within the mixing chamber and precisely pushing it to the designated area. Positive pressure conveying has a powerful driving force, enabling long-distance, high-pressure material conveying.
[0012] In some embodiments, the feeding component includes: a feeding port and a first valve for opening and closing the feeding port, the feeding port being in communication with an internal cavity;
[0013] The discharge component includes a discharge port and a second valve for opening and closing the discharge port. The discharge port is connected to the internal cavity, and the top of the second valve is connected to a discharge elbow. The inlet facilitates the feeding of materials into the internal cavity, and the outlet facilitates the discharge and collection of the mixed and coated product.
[0014] In some embodiments, the pressurization assembly includes: a pressurizer, a first connecting pipe, a one-way valve, a first manual valve, a second manual valve, and a pressure regulating unit. The pressurizer is connected to the discharge elbow. One end of the first connecting pipe is connected to the discharge elbow, and the other end is connected to the top of the tank. The first connecting pipe is arranged sequentially from bottom to top as follows: one-way valve, first manual valve, pressure regulating unit, and second manual valve. When material enters the mixing chamber via the pressurization assembly, the equipment switches to positive pressure conveying mode. The compressed air device starts working, generating a powerful positive pressure airflow that propels the material to move in an orderly manner within the mixing chamber and precisely pushes the material to the designated area. Positive pressure conveying has a powerful driving force, enabling long-distance, high-pressure material conveying, ensuring that the material accurately reaches its destination even in complex pipeline layouts, meeting the needs of different production scenarios.
[0015] In some embodiments, the pressure regulating unit includes a pressure regulating valve, an oil-water separator, and a third manual valve, which are arranged sequentially away from the tank body on the first connecting pipe. The pressure regulating unit facilitates precise pressure control.
[0016] In some embodiments, the dust collection component includes: a dust collector, a pneumatic ball valve, a blowpipe, a first pulse solenoid valve, an air reservoir, and a filter element. The bottom of the dust collector and the top of the tank are connected by a first chuck. The pneumatic ball valve is installed on the top of the dust collector, and its bottom is connected to the blowpipe. The first pulse solenoid valve is installed on the blowpipe and connected to the air reservoir, which is connected to an external air source. The filter element is removably installed inside the dust collector. The exhaust gas is filtered by the dust collection component.
[0017] In some embodiments, the negative pressure assembly includes a negative pressure generating device and a filter storage tank. The negative pressure generating device is connected to the filter storage tank, which is connected to a first pulse solenoid valve. Through the negative pressure assembly, the vacuum pump operates rapidly, creating a negative pressure environment inside the conveying pipeline and mixing chamber. Under the pressure difference between the external atmospheric pressure and the internal negative pressure of the equipment, the material is smoothly drawn into the conveying pipeline from the inlet and then smoothly enters the mixing chamber. This conveying method effectively avoids the problem of dust flying during the conveying process, not only reducing material loss but also significantly reducing pollution to the production environment, creating a clean and healthy working space for operators.
[0018] In some embodiments, the airflow mixing component includes: a jet component, an inlet ring pipe, and a second pulse solenoid valve. The air inlet of the jet component is connected to the inlet ring pipe, which is connected to a compressed air source via the second pulse solenoid valve. The inlet ring pipe is located at the bottom outer side of the tank, and the jet component is located at the bottom of the tank. The airflow mixing component causes the airflow to act evenly on the material from multiple directions, creating omnidirectional disturbance.
[0019] In some embodiments, the jetting component includes a conical cavity, a nozzle, a cylinder, and a second connecting pipe. One end of the second connecting pipe is connected to an air inlet ring pipe, and the other end is connected to the nozzle. The cylinder is located at the end of the nozzle and controls its opening and closing. The nozzle tip extends into the conical cavity. Multiple sets of nozzles, cylinders, and second connecting pipes are provided, and the nozzles are evenly distributed along the inner wall of the conical cavity. This uniform distribution ensures that the airflow is uniformly distributed throughout the mixing container, preventing localized material accumulation or stagnation, thus guaranteeing uniform distribution of the sprayed liquid throughout the entire material system.
[0020] In some embodiments, the compressed air assembly includes an air compressor, an air tank, an oil separator, a second filter, and a sterilizing filter. The air compressor is sequentially connected to the air tank, the oil separator, the second filter, and the sterilizing filter, with the sterilizing filter connected to the intake ring pipe. Compressed air is supplied by the air compressor to power the mixing process.
[0021] In some embodiments, the tank is equipped with several pneumatic hammers. These pneumatic hammers prevent powder from adhering, clogging, and bridging during transport.
[0022] Compared with existing technologies, this utility model has the advantages of high working efficiency, efficient conveying, precise control, and wide applicability. This utility model uses a negative pressure component to smoothly draw material into the conveying pipeline from the inlet, and then into the mixing chamber. This conveying method effectively avoids dust flying during the conveying process, reducing material loss and significantly lowering pollution to the production environment. The pressurization component generates a powerful positive pressure airflow, propelling the material in an orderly manner within the mixing chamber and precisely pushing it to the designated area. Positive pressure conveying has strong driving force, enabling long-distance, high-pressure material conveying. The inlet facilitates the input of material into the internal chamber, and the outlet facilitates the discharge and collection of the mixed and coated product. After the material enters the mixing chamber, the equipment switches to positive pressure conveying mode, and the compressed air device starts working, generating a powerful positive pressure airflow to propel the material in an orderly manner within the mixing chamber and precisely push it to the designated area. In this region, positive pressure conveying possesses powerful driving force, enabling long-distance, high-pressure material transport. This ensures materials reach their destination accurately even in complex pipeline layouts, meeting the needs of various production scenarios. A pressure regulating unit facilitates precise pressure control; a dust removal component filters the exhaust gas; an airflow mixing component ensures airflow acts evenly on the material from multiple directions, creating comprehensive disturbance; uniform airflow distribution keeps the material in a uniform state of motion within the mixing container, preventing localized material accumulation or stagnation, thus ensuring uniform material coating; an air compressor provides compressed air to power the mixing process; and pneumatic hammers prevent powder adhesion, blockage, and bridging during transport. Attached Figure Description
[0023] Figure 1 This is a schematic diagram of the structure of the airflow mixing device with positive and negative pressure conveying of this utility model;
[0024] Figure 2 This is a schematic diagram of the airflow mixing component of the airflow mixing device with positive and negative pressure conveying according to this utility model;
[0025] Figure 3 This is a schematic diagram of the pressurization component of the airflow mixing device with positive and negative pressure conveying of this utility model;
[0026] Figure 4 This is a schematic diagram of the dust removal component of the airflow mixing device with positive and negative pressure conveying according to this utility model;
[0027] Figure 5 This is a schematic diagram of the negative pressure component of the airflow mixing device with positive and negative pressure conveying of this utility model;
[0028] Figure 6This is a schematic diagram of the airflow mixing component of the airflow mixing device with positive and negative pressure conveying according to this utility model;
[0029] Figure 7 This is a schematic diagram of the air compressor component of the airflow mixing device with positive and negative pressure conveying according to this utility model. Detailed Implementation
[0030] 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.
[0031] 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.
[0032] like Figure 1 As shown, the airflow mixing device with positive and negative pressure conveying of this utility model includes: an air compressor component 1, a booster component 2, a negative pressure component 3 and an airflow mixing component 4. The air compressor component 1 is connected to the lower part of the airflow mixing component 43, the booster component 2 is connected to the airflow mixing component 4, and the negative pressure component 3 is connected to the top of the airflow mixing component 4.
[0033] like Figure 2 As shown, the airflow mixing assembly 4 includes: a tank 41, a dust removal component 42, and an airflow mixing component 43. A feeding component 44 is provided at the top of the tank 41 and the feeding component 44 communicates with the internal cavity 411 of the tank 41. A dust removal component 42 is provided at the top of the tank 41 and communicates with the internal cavity 411 of the tank 41. The airflow mixing component 43 is provided at the bottom of the internal cavity 411 of the tank 41. The airflow mixing component 43 extends out of the tank 41 and communicates with the compressed air intake. A discharge component 45 communicating with the outside is provided at the bottom of the tank 41.
[0034] The booster assembly 2 is connected to the discharge component 45, and the negative pressure assembly 3 is connected to the dust removal component 42. Through the negative pressure assembly 3, the material is smoothly drawn into the conveying pipe from the inlet 441 and then smoothly enters the mixing chamber. This conveying method effectively avoids the problem of dust flying during the conveying process, not only reducing material loss but also significantly reducing pollution to the production environment. When the booster assembly 2 starts working, it generates a strong positive pressure airflow, which propels the material to move in an orderly manner within the mixing chamber and precisely pushes the material to the designated area. Positive pressure conveying has a strong driving force, enabling long-distance, high-pressure conveying of materials.
[0035] The feeding component 44 includes: a feeding port 441 and a first valve 442 for opening and closing the feeding port 441, the feeding port 441 being connected to the internal cavity 411;
[0036] The discharge component 45 includes a discharge port 451 and a second valve 452 for opening and closing the discharge port 451. The discharge port 451 is connected to the internal cavity 411, and the top of the second valve 452 is connected to a discharge elbow. The material is easily fed into the internal cavity 411 through the inlet 441, and the mixed and coated product is easily discharged and collected through the discharge port 451.
[0037] like Figure 3 As shown, the pressurization assembly 2 includes: a pressurizer 21, a first connecting pipe 22, a one-way valve 23, a first manual valve 24, a second manual valve 25, and a pressure regulating unit 26. The pressurizer 21 is connected to the discharge elbow. One end of the first connecting pipe 22 is connected to the discharge elbow, and the other end of the first connecting pipe 22 is connected to the top of the tank 41. From bottom to top, the first connecting pipe 22 is sequentially arranged with the one-way valve 23, the first manual valve 24, the pressure regulating unit 26, and the second manual valve 25. When the material enters the mixing chamber through the pressurization assembly 2, the equipment switches to positive pressure conveying mode. The compressed air device starts working, generating a strong positive pressure airflow, which propels the material to move in an orderly manner within the mixing chamber and accurately pushes the material to the designated area. Positive pressure conveying has a strong driving force, enabling long-distance, high-pressure conveying of materials, ensuring that materials can accurately reach their destination even in complex pipeline layouts, meeting the needs of different production scenarios.
[0038] The pressure regulating unit 26 includes a pressure regulating valve 261, an oil-water separator 262, and a third manual valve 263. The pressure regulating valve 261, the oil-water separator 262, and the third manual valve 263 are mounted on the first connecting pipe 22 and arranged sequentially away from the tank body 41. The pressure regulating unit 26 facilitates precise pressure control.
[0039] like Figure 4As shown, the dust removal component 42 includes: a dust collector 421, a pneumatic ball valve 422, a blowpipe 423, a first pulse solenoid valve 424, an air tank 425, and a filter element 426. The bottom of the dust collector 421 and the top of the tank 41 are connected by a first chuck 427. The pneumatic ball valve 422 is installed on the top of the dust collector 421, and the bottom of the pneumatic ball valve 422 is connected to the blowpipe 423. The first pulse solenoid valve 424 is installed on the blowpipe 423, and the first pulse solenoid valve 424 is connected to the air tank 425. The air tank 425 is connected to an external air source. The filter element 426 is detachably installed inside the dust collector 421. The dust removal component 42 filters the discharged gas.
[0040] like Figure 5 As shown, the negative pressure assembly 3 includes a negative pressure generating device 31 and a filter storage tank 32. The negative pressure generating device 31 is connected to the filter storage tank 32, which is connected to the first pulse solenoid valve 424. Through the negative pressure assembly 3, the vacuum pump operates rapidly, creating a negative pressure environment inside the conveying pipeline and mixing chamber. At this time, under the pressure difference between the external atmospheric pressure and the internal negative pressure of the equipment, the material is smoothly drawn into the conveying pipeline from the feed inlet 441 and then smoothly enters the mixing chamber. This conveying method effectively avoids the problem of dust flying during the conveying process, not only reducing material loss but also significantly reducing pollution to the production environment, creating a clean and healthy working space for operators.
[0041] like Figure 6 As shown, the airflow mixing component 43 includes: a jet component 431, an inlet ring pipe 432, and a second pulse solenoid valve 433. The air inlet of the jet component 431 is connected to the inlet ring pipe 432, and the inlet ring pipe 432 is connected to a compressed air source through the second pulse solenoid valve 433. The inlet ring pipe 432 is located at the bottom outer side of the tank body 41, and the jet component 431 is located at the bottom of the tank body 41. The airflow mixing component 43 causes the airflow to act evenly on the material from multiple directions, forming an all-round disturbance.
[0042] The jetting component 431 includes a conical cavity 4311, a nozzle 4312, a cylinder 4313, and a second connecting pipe 4314. One end of the second connecting pipe 4314 is connected to the air inlet ring pipe 432, and the other end is connected to the nozzle 4312. The cylinder 4313 is located at the end of the nozzle 4312 and controls the opening and closing of the nozzle 4312. The front end of the nozzle 4312 extends into the conical cavity 4311. Multiple sets of nozzles 4312, cylinders 4313, and second connecting pipes 4314 are provided. The nozzles 4312 are evenly distributed along the inner wall of the conical cavity 4311. This even distribution ensures that the airflow is uniformly distributed, resulting in uniform movement of the material within the mixing container. This avoids localized material accumulation or stagnation, thus ensuring uniform distribution of the sprayed liquid throughout the material system. It is important to note that the conical cavity 4311 has a smooth interior without any dead corners, a mirror-polished inner wall, and is integrally welded.
[0043] like Figure 7 As shown, the air compressor assembly 1 includes: an air compressor 11, an air tank 12, an oil separator 13, a second filter 14, and a sterilizing filter 15. The rear end of the air compressor 11 is sequentially connected to the air tank 12, the oil separator 13, the second filter 14, and the sterilizing filter 15. The sterilizing filter 15 is connected to the intake ring pipe 432. Compressed air is provided by the air compressor 11 to power the mixture.
[0044] The tank 41 is equipped with several pneumatic hammers 46. The pneumatic hammers 46 prevent the powder from adhering, clogging and bridging during the conveying process.
[0045] During use, first turn on the negative pressure component 3, and the vacuum pump will start operating quickly, creating a negative pressure environment in the conveying pipe and mixing chamber. At this time, under the pressure difference between the external atmospheric pressure and the negative pressure inside the equipment, the material is smoothly sucked into the conveying pipe from the feed inlet 441 and then smoothly enters the mixing chamber.
[0046] Then the air compressor assembly 1 operates, and compressed air enters the airflow mixing component 43 to mix the materials under the action of the airflow;
[0047] Finally, the pressurization component 2 operates, driving the material to move in an orderly manner within the mixing chamber and precisely pushing the material to the designated area to achieve long-distance, high-pressure material transportation.
[0048] This invention also features an intelligent positive / negative pressure switching system, capable of real-time monitoring of internal pressure changes, material conveying status, and production process requirements. Based on this precise data, it rapidly and smoothly switches between positive and negative pressure conveying modes within milliseconds. The entire switching process requires no manual intervention, which not only improves the automation level and operating efficiency of the equipment but also significantly reduces the risk of production failures caused by human error, ensuring the continuity and stability of the production process.
[0049] Tests have shown that, compared to traditional mixing equipment, this equipment can improve mixing uniformity by more than 20% and shorten mixing time by 30%-50%, significantly improving production efficiency. At the same time, the CV value (coefficient of variation) of mixing uniformity can be controlled within 3%.
[0050] The above descriptions are merely some embodiments of this utility model. It should be noted that those skilled in the art can make other modifications and improvements without departing from the inventive concept of this utility model, and these all fall within the protection scope of this utility model.
Claims
1. An airflow mixing device with positive and negative pressure conveying, characterized in that, include: An air compressor assembly, a booster assembly, a negative pressure assembly, and an airflow mixing assembly are provided. The air compressor assembly is connected to the lower part of the airflow mixing assembly, the booster assembly is connected to the airflow mixing assembly, and the negative pressure assembly is connected to the top of the airflow mixing assembly. The airflow mixing assembly includes: a tank, a dust removal component, and an airflow mixing component. A feeding component is provided at the top of the tank and the feeding component is in communication with the internal cavity of the tank. A dust removal component is provided at the top of the tank and is in communication with the internal cavity of the tank. The airflow mixing component is located at the bottom of the internal cavity of the tank and extends out of the tank to communicate with the compressed air intake. A discharge component communicating with the outside is provided at the bottom of the tank. The pressurization component is connected to the discharge component, and the negative pressure component is connected to the dust removal component.
2. The airflow mixing device with positive and negative pressure conveying according to claim 1, characterized in that, The feeding component includes: a feeding port and a first valve for opening and closing the feeding port, the feeding port being connected to the internal cavity; The discharge component includes a discharge port and a second valve for opening and closing the discharge port. The discharge port is connected to the internal cavity, and the top of the second valve is connected to a discharge elbow.
3. The airflow mixing device with positive and negative pressure conveying according to claim 2, characterized in that, The pressurization assembly includes: a pressurizer, a first connecting pipe, a one-way valve, a first manual valve, a second manual valve, and a pressure regulating unit. The pressurizer is connected to the discharge elbow. One end of the first connecting pipe is connected to the discharge elbow, and the other end of the first connecting pipe is connected to the top of the tank. The first connecting pipe is arranged from bottom to top as follows: one-way valve, first manual valve, pressure regulating unit, and second manual valve.
4. The airflow mixing device with positive and negative pressure conveying according to claim 3, characterized in that, The pressure regulating unit includes a pressure regulating valve, an oil-water separator, and a third manual valve. The pressure regulating valve, the oil-water separator, and the third manual valve are arranged on the first connecting pipe and are sequentially located away from the tank body.
5. The airflow mixing device with positive and negative pressure conveying according to claim 2, 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 first chuck. A pneumatic ball valve is installed on the top of the dust collector. The bottom of the pneumatic ball valve is connected to the blowpipe. A 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. A filter element is detachably installed inside the dust collector. The first pulse solenoid valve is connected to a negative pressure assembly.
6. The airflow mixing device with positive and negative pressure conveying according to claim 5, characterized in that, The negative pressure assembly includes a negative pressure generating device and a filter storage tank. The negative pressure generating device is connected to the filter storage tank, and the filter storage tank is connected to a first pulse solenoid valve.
7. The airflow mixing device with positive and negative pressure conveying according to claim 6, characterized in that, The airflow mixing component includes: a jet component, an intake ring pipe, and a second pulse solenoid valve. The air inlet of the jet component is connected to the intake ring pipe, and the intake ring pipe is connected to a compressed air source through the second pulse solenoid valve. The intake ring pipe is located at the bottom outer side of the tank, and the jet component is located at the bottom of the tank. The jet component includes: a conical cavity, a nozzle, a cylinder, and a second connecting pipe. One end of the second connecting pipe is connected to the intake ring pipe, and the other end of the second connecting pipe is connected to the nozzle. The cylinder is located at the end of the nozzle and controls the opening and closing of the nozzle. The front end of the nozzle extends into the conical cavity. Multiple sets of nozzles, cylinders, and second connecting pipes are provided, and the nozzles are evenly distributed along the inner wall of the conical cavity.
8. The airflow mixing device with positive and negative pressure conveying according to claim 7, characterized in that, The air compressor assembly includes an air compressor, an air tank, an oil separator, a second filter, and a sterilizing filter. The air compressor is connected in sequence to the air tank, the oil separator, the second filter, and the sterilizing filter. The sterilizing filter is connected to the intake ring pipe.
9. The airflow mixing device with positive and negative pressure conveying according to any one of claims 1-7, characterized in that, The tank is equipped with several pneumatic hammers.
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