Centrifugal two-fluid atomizer
By combining centrifugal and two-fluid atomization technologies, the centrifugal two-fluid atomizer solves the problems of high energy consumption, uneven atomization, and difficulty in controlling particle size of existing atomizers, achieving efficient and low-cost atomization effects, and is suitable for fine particle size adjustment of various liquids.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHONGWEI JINGPIAN NEW MATERIALS HUAIAN CO LTD
- Filing Date
- 2025-05-06
- Publication Date
- 2026-05-15
AI Technical Summary
Existing centrifugal atomizers and two-fluid atomizers each have problems such as high energy consumption, uneven atomization effect, difficulty in controlling particle size, and complex equipment and frequent maintenance. They are particularly ineffective when processing liquids with high viscosity or containing particulate matter.
Design a centrifugal two-fluid atomizer that combines centrifugal and two-fluid atomization technologies. The liquid is dispersed by centrifugal force and then atomized by airflow. The centrifugal atomization mechanism and the two-fluid atomization mechanism can be used alone or in combination. A stirring mechanism and a liquid level gauge are provided to ensure liquid uniformity and real-time monitoring.
It improves atomization efficiency and adaptability, reduces energy consumption and maintenance costs, achieves finer particle size control and stable atomization effect, and is suitable for efficient atomization of different liquids.
Smart Images
Figure CN224237143U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of atomizer technology, and in particular to a centrifugal two-fluid atomizer. Background Technology
[0002] Currently, there are two main types of atomizers: centrifugal atomizers and two-fluid atomizers. Centrifugal atomizers are widely used in the liquid processing and drying industry. The atomizer is the component in a spray drying device that imparts high energy and high speed to the atomized medium, and it is also a key component that plays an important role in atomization efficiency and the stability of the atomization process. It is driven by an electric motor via a coupling, which in turn drives a large gear on a rotating shaft. This gear, after a first-stage speed increase, drives a second-stage large gear to achieve high-speed rotation of the atomizing disc. When the liquid material enters the feed pipe of the centrifugal atomizer, it flows evenly into the high-speed rotating spray disc through a liquid distribution disc. The liquid is then sprayed into extremely small atomized droplets, greatly increasing the surface area of the liquid. Upon contact with the hot air in the drying chamber, the moisture evaporates rapidly, drying the liquid into a finished product in a very short time. Centrifugal atomizers are the most widely used process in the liquid processing and drying industry, and are best suited for producing powdered or granular solid products from solutions, emulsions, suspensions, and plastic paste-like liquid raw materials. Therefore, spray drying is an ideal process when the particle size distribution, residual moisture content, bulk density, and particle shape of the finished product must meet precise standards. The principle of a two-fluid atomizing nozzle is that the encounter between a high-speed jet of air and a low-speed jet of liquid generates intense shear and friction forces, causing the liquid to condense into small particles, ultimately forming a mist. Compared to traditional single-phase nozzles, two-fluid atomizing nozzles have the advantage of being able to atomize high-viscosity, high-concentration materials and providing a more uniform particle size distribution. Furthermore, since no high-pressure gas is involved in the operation, safety hazards such as explosions and fires are avoided.
[0003] Centrifugal atomizers are only suitable for low-viscosity liquids. For high-viscosity liquids, the atomization effect is not ideal, which may lead to uneven droplets or difficulty in atomization. Centrifugal atomization relies on a high-speed rotating rotor or disc, which requires a high rotation speed to achieve effective atomization. Therefore, energy consumption is relatively high, which may affect the overall energy efficiency, especially in large-scale applications. The droplet size distribution generated by centrifugal atomizers may be wide and difficult to control precisely. For some applications that require a more uniform particle size distribution (such as precision spraying, drug atomization, etc.), additional optimization measures may be required. Due to the influence of its own rotation speed, the products produced by centrifugal atomizers generally have large particle sizes and basically cannot reach the single-digit micron level or below. Two-fluid atomizers require gas (usually compressed air) for atomization, resulting in significant gas consumption, especially in large-scale applications, which can lead to high operating costs. Two-fluid atomizers typically require high air pressure to produce sufficient atomization, increasing the equipment's dependence on the gas source and making it sensitive to pressure fluctuations, potentially leading to unstable atomization. Atomization is highly dependent on airflow stability; unstable or uneven airflow can result in poor atomization, uneven droplet size distribution, and negatively impact the final effect. The relatively complex structure of two-fluid atomizers involves the mixing and control of liquids and gases, requiring precise control of gas and liquid flow rates. This leads to frequent equipment maintenance and adjustments, and long-term use may require more maintenance and repairs. For liquids with high viscosity or containing particulate matter, the atomization effect of two-fluid atomizers may be poor. High-viscosity liquids are difficult to atomize efficiently through the nozzle, and particulate matter may clog the nozzle or affect airflow stability. Utility Model Content
[0004] In order to overcome the problems existing in the prior art, this application provides a centrifugal two-fluid atomizer.
[0005] The centrifugal two-fluid atomizer provided in this application adopts the following technical solution:
[0006] A centrifugal two-fluid atomizer includes a housing, within which a centrifugal atomizing mechanism and a two-fluid atomizing mechanism are installed. The centrifugal atomizing mechanism and the two-fluid atomizing mechanism are connected to a liquid tank via a first liquid inlet pipe and a second liquid inlet pipe, respectively. A first three-way valve is installed on the outlet pipe of the liquid tank. An air inlet for the two-fluid atomizing mechanism is opened at the top of the housing, and mist outlets for the centrifugal atomizing mechanism and the two-fluid atomizing mechanism are opened on the sides of the housing, respectively. A second three-way valve is provided between the mist outlet pipe of the centrifugal atomizing mechanism and the second liquid inlet pipe of the two-fluid atomizing mechanism. The centrifugal atomizing mechanism includes an atomizing chamber containing a centrifugal disc driven by a drive mechanism. The two-fluid atomizing mechanism includes a liquid supply system and a gas supply system. The liquid supply system includes a second liquid inlet pipe and a liquid filter and a liquid pressure regulator installed on the second liquid inlet pipe. The gas supply system includes an air inlet valve, an air filter, and an air pressure regulator sequentially distributed on an air inlet pipe. The outlets of the second liquid inlet pipe and the air inlet pipe are connected to the atomizing nozzle.
[0007] Preferably, the drive mechanism includes a rotating shaft installed at the center of the centrifugal disc, wherein both ends of the rotating shaft are rotatably connected to the frame, and gears that mesh with gears on the output shaft of the servo motor are installed on the rotating shaft.
[0008] Preferably, the diameter of the gear on the output shaft of the servo motor is larger than the diameter of the gear on the rotating shaft, wherein the outer diameter of the gear on the rotating shaft is smaller than the outer diameter of the centrifugal disk.
[0009] Preferably, the top surface of the centrifuge disc has evenly distributed radioactive blades.
[0010] Preferably, the liquid inlet of the atomizing chamber is located at the top center of the centrifuge disc, and the mist outlet is located at the top edge of the centrifuge disc.
[0011] Preferably, a stirring fan blade is installed at the bottom of the liquid tank, wherein the stirring fan blade is installed on the output shaft of the stirring motor, and the stirring motor is installed on the top cover of the liquid tank.
[0012] Preferably, a level gauge is also installed on the side of the liquid tank, and the level gauge is connected to an alarm on the housing.
[0013] Preferably, pressure gauges are also installed on the liquid pressure regulator and the air pressure regulator.
[0014] In summary, this application includes at least one of the following beneficial technical effects:
[0015] 1. The centrifugal two-fluid integrated atomizer design adopted in this application overcomes the shortcomings of traditional single atomizers in handling different liquids, fine particle size adjustment and equipment stability by combining the advantages of centrifugal and two-fluid atomization technologies. It is dispersed by centrifugal force and then atomized again by airflow, which improves atomization efficiency, adaptability and spray quality, while reducing energy consumption and maintenance costs. It has broad application prospects and technical advantages.
[0016] 2. This application provides a centrifugal atomizing mechanism and a two-fluid atomizing mechanism inside the housing. A second three-way valve is provided between the mist outlet pipe of the centrifugal atomizing mechanism and the liquid inlet pipe of the two-fluid atomizing mechanism, which enables the switching between the use of the centrifugal atomizing mechanism and the two-fluid atomizing mechanism individually and in combination, so as to meet the atomization requirements of different liquids.
[0017] 3. This application provides a stirring mechanism inside the liquid tank that supplies liquid to the centrifugal atomizing mechanism and the two-fluid atomizing mechanism. This mechanism can maintain the uniformity of the liquid in the liquid tank. Furthermore, the liquid level gauge installed on the side of the liquid tank can monitor the liquid level in the tank in real time and alert the operator to replenish the liquid when the liquid is insufficient, thus ensuring the normal operation of the atomizer. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the overall structure of a centrifugal two-fluid atomizer.
[0019] Explanation of reference numerals in the attached drawings: 1. Outer casing; 2. Centrifugal atomizing mechanism; 21. First liquid inlet pipe; 22. Mist outlet pipe; 221. Second three-way valve; 23. Atomizing chamber; 24. Centrifugal disc; 25. Drive mechanism; 251. Rotating shaft; 252. Servo motor; 3. Two-fluid atomizing mechanism; 31. Second liquid inlet pipe; 311. Liquid filter; 312. Liquid pressure regulator; 32. Air inlet; 33. Liquid supply system; 34. Gas supply system; 341. Air inlet pipe; 342. Air inlet valve; 343. Air filter; 344. Air pressure regulator; 35. Atomizing nozzle; 36. Pressure gauge; 4. Material tank; 41. First three-way valve; 42. Stirring blade; 43. Stirring motor; 44. Top cover; 45. Liquid level gauge; 46. Alarm. Detailed Implementation
[0020] The following is in conjunction with the appendix Figure 1 This application will be described in further detail.
[0021] This application discloses a centrifugal two-fluid atomizer.
[0022] Reference Figure 1A centrifugal two-fluid atomizer includes a housing 1, inside which a centrifugal atomizing mechanism 2 and a two-fluid atomizing mechanism 3 are installed. The centrifugal atomizing mechanism 2 and the two-fluid atomizing mechanism 3 are connected to a liquid tank 4 via a first liquid inlet pipe 21 and a second liquid inlet pipe 31, respectively. A stirring fan blade 42 is installed at the bottom of the liquid tank 4, and the stirring fan blade 42 is mounted on the output shaft of a stirring motor 43. The stirring motor 43 is mounted on the top cover 44 of the liquid tank 4. A level gauge 45 is also installed on the side of the liquid tank 4, and the level gauge 45 is connected to an alarm 46 on the housing 1. A first three-way valve 41 is installed on the outlet pipe of the liquid tank 4. An air inlet 32 for the two-fluid atomizing mechanism 3 is opened at the top of the housing 1, and mist outlets for the centrifugal atomizing mechanism 2 and the two-fluid atomizing mechanism 3 are opened on the side of the housing 1, respectively. A second three-way valve 221 is provided between the mist outlet pipe 22 of the centrifugal atomizing mechanism 2 and the second liquid inlet pipe 31 of the two-fluid atomizing mechanism 3.
[0023] Reference Figure 1 The centrifugal atomizing mechanism 2 includes an atomizing chamber 23, with the liquid inlet of the atomizing chamber 23 located at the top center of the centrifugal disc 24 and the mist outlet located at the top edge of the centrifugal disc 24. The centrifugal disc 24 is housed within the atomizing chamber 23, and radial blades are evenly distributed on its top surface. The centrifugal disc 24 is driven by a driving mechanism 25, which includes a rotating shaft 251 mounted at the center of the centrifugal disc 24. Both ends of the rotating shaft 251 are rotatably connected to the frame. Gears are mounted on the rotating shaft 251 that mesh with gears on the output shaft of a servo motor 252. The diameter of the gear on the output shaft of the servo motor 252 is larger than the diameter of the gear on the rotating shaft 251, while the outer diameter of the gear on the rotating shaft 251 is smaller than the outer diameter of the centrifugal disc 24.
[0024] Reference Figure 1 The two-fluid atomizing mechanism 3 includes a liquid supply system 33 and a gas supply system 34. The liquid supply system 33 includes a second liquid inlet pipe 31 and a liquid filter 311 and a liquid pressure regulator 312 installed on the second liquid inlet pipe 31. The gas supply system 34 includes an air inlet valve 342, an air filter 343 and an air pressure regulator 344 sequentially distributed on the air inlet pipe 341. The outlets of the second liquid inlet pipe 31 and the air inlet pipe 341 are connected to the atomizing nozzle 35. The atomizing nozzle 35 is a conventional structure on the two-fluid atomizer. Pressure gauges 36 are also installed on the liquid pressure regulator 312 and the air pressure regulator 344.
[0025] Working principle: When the centrifugal atomizing mechanism 2 and the two-fluid atomizing mechanism 3 work together, the liquid is discharged from the liquid tank 4 and introduced into the first liquid inlet pipe 21 through the outlet pipe of the liquid tank 4. The liquid is introduced from the top center of the centrifugal disc 24. The centrifugal force of the centrifugal disc 24 disperses the liquid. The liquid that has been initially atomized is discharged through the mist outlet pipe 22 and enters the second liquid inlet pipe 31 of the two-fluid atomizing mechanism 3. The liquid that has been atomized by the centrifugal disc 24 is filtered by the liquid filter 311 and the liquid pressure regulator 312 controls the flow rate of the liquid. At the same time, the container of high-pressure gas is connected through the air inlet 32. The air inlet valve 342 on the air inlet pipe 341 is opened. The high-pressure gas is filtered by the air filter 343 and the air pressure regulator 344 adjusts the flow rate of the gas. Then it is mixed and atomized with the liquid that has been initially atomized introduced into the second liquid inlet pipe 31 at the atomizing nozzle 35.
[0026] When the centrifugal atomizing mechanism 2 works alone, the liquid is discharged from the liquid tank 4 and introduced into the first liquid inlet pipe 21 through the outlet pipe of the liquid tank 4. The liquid is introduced from the top center of the centrifugal disc 24 and dispersed by the centrifugal force of the centrifugal disc 24. The liquid that has undergone preliminary atomization is discharged through the mist outlet pipe 22.
[0027] When the two-fluid atomizing mechanism 3 operates alone, the liquid is discharged from the liquid tank 4 and introduced into the second liquid inlet pipe 31 through the outlet pipe of the liquid tank 4. The liquid is filtered by the liquid filter 311 and the liquid pressure regulator 312 controls the flow rate of the liquid. At the same time, the container of high-pressure gas is connected through the air inlet 32, and the air inlet valve 342 on the air inlet pipe 341 is opened. The high-pressure gas is filtered by the air filter 343 and the air pressure regulator 344 adjusts the flow rate of the gas. Then, it is mixed and atomized with the liquid that has been initially atomized introduced into the second liquid inlet pipe 31 at the atomizing nozzle 35.
[0028] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A centrifugal two-fluid atomizer, characterized in that: include The outer shell (1) is equipped with a centrifugal atomizing mechanism (2) and a two-fluid atomizing mechanism (3). The centrifugal atomizing mechanism (2) and the two-fluid atomizing mechanism (3) are connected to the liquid tank (4) through a first liquid inlet pipe (21) and a second liquid inlet pipe (31), respectively. A first three-way valve (41) is installed on the outlet pipe of the liquid tank (4). An air inlet (32) of the two-fluid atomizing mechanism (3) is opened on the top of the outer shell (1). A mist outlet of the centrifugal atomizing mechanism (2) and the two-fluid atomizing mechanism (3) are opened on the side of the outer shell (1), respectively. A second three-way valve (221) is provided between the mist outlet pipe (22) of the centrifugal atomizing mechanism (2) and the second liquid inlet pipe (31) of the two-fluid atomizing mechanism (3). Centrifugal atomizing mechanism (2), the centrifugal atomizing mechanism (2) includes an atomizing chamber (23), a centrifugal disc (24) is provided in the atomizing chamber (23), and the centrifugal disc (24) is driven by a driving mechanism (25); The two-fluid atomizing mechanism (3) includes a liquid supply system (33) and a gas supply system (34). The liquid supply system (33) includes a second liquid inlet pipe (31) and a liquid filter (311) and a liquid pressure regulator (312) installed on the second liquid inlet pipe (31). The gas supply system (34) includes an air inlet valve (342), an air filter (343) and an air pressure regulator (344) sequentially distributed on the air inlet pipe (341). The outlets of the second liquid inlet pipe (31) and the air inlet pipe (341) are connected to the atomizing nozzle (35).
2. The centrifugal two-fluid atomizer according to claim 1, characterized in that: The drive mechanism (25) includes a rotating shaft (251) installed at the center of the centrifugal disc (24), wherein the two ends of the rotating shaft (251) are rotatably connected to the frame, and a gear is installed on the rotating shaft (251) to mesh with the gear on the output shaft of the servo motor (252).
3. A centrifugal two-fluid atomizer according to claim 2, characterized in that: The diameter of the gear on the output shaft of the servo motor (252) is greater than the diameter of the gear on the rotating shaft (251), wherein the outer diameter of the gear on the rotating shaft (251) is smaller than the outer diameter of the centrifugal disk (24).
4. A centrifugal two-fluid atomizer according to claim 3, characterized in that: The top surface of the centrifuge disc (24) is uniformly distributed with radioactive blades.
5. A centrifugal two-fluid atomizer according to claim 4, characterized in that: The liquid inlet of the atomizing chamber (23) is located at the top center of the centrifuge plate (24), and the mist outlet is located at the top edge of the centrifuge plate (24).
6. A centrifugal two-fluid atomizer according to claim 1, characterized in that: The bottom of the liquid tank (4) is equipped with a stirring blade (42), which is mounted on the output shaft of the stirring motor (43), and the stirring motor (43) is mounted on the top cover (44) of the liquid tank (4).
7. A centrifugal two-fluid atomizer according to claim 6, characterized in that: A level gauge (45) is also installed on the side of the liquid tank (4), and the level gauge (45) is connected to an alarm (46) on the outer casing (1).
8. A centrifugal two-fluid atomizer according to claim 1, characterized in that: Pressure gauges (36) are also installed on the liquid pressure regulator (312) and the air pressure regulator (344).