CN210875852U - Atomization device combining magnetization assistance and gas phase assistance - Google Patents
Atomization device combining magnetization assistance and gas phase assistance Download PDFInfo
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- CN210875852U CN210875852U CN201921226020.5U CN201921226020U CN210875852U CN 210875852 U CN210875852 U CN 210875852U CN 201921226020 U CN201921226020 U CN 201921226020U CN 210875852 U CN210875852 U CN 210875852U
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Abstract
An atomization device combining magnetization assistance and gas phase assistance comprises a water tank, a centrifugal machine, an air compressor, a magnetization device and a gas phase assistance atomization nozzle, wherein an outlet of the water tank is connected with an inlet of the centrifugal machine; the air compressor is connected with the gas-phase auxiliary atomizing nozzle; through setting up magnetization unit and the supplementary atomizing nozzle of gaseous phase, utilize magnetization unit to standardize the association structure of water through the magnetization process to reduce the surface tension and the dynamic viscosity of water, increase the weber number, reduce the demand of bubble atomizing to gaseous phase gauge pressure, form the condition that is favorable to the bubble atomizing, and then promote the high-efficient combination of pneumatics, bubble atomizing technique, improve evaporation rate, reduce the required cost of the supplementary atomizing of gaseous phase. The required field intensity is smaller, the volume of the magnetizer is effectively reduced, and the use flexibility is enhanced; hardly influenced by electromagnetic equipment in a working environment, and has stable effect.
Description
Technical Field
The utility model relates to an atomizing device that supplementary and gaseous phase of magnetization combined together belongs to gas-liquid two-phase flow atomizing technical field.
Background
An atomizing nozzle is a device that can atomize and spray a liquid so that the liquid exists in the air in the form of minute droplets. Atomization technology has covered almost all industrial fields such as transportation, agricultural production, fuel combustion, daily life, etc.; atomization technology is also widely used in non-combustion industries such as catalytic granulation, food processing, powder coating, pesticide spraying, and the like.
The existing atomizing nozzles are mainly mechanical atomizing nozzles and medium atomizing nozzles. The water pressure required by the mechanical atomizing nozzle is high, and the flow is difficult to adjust; the medium atomizing nozzle mainly takes gas-phase auxiliary atomization as a main part and mainly comprises two types of bubble atomization and pneumatic atomization: the bubble atomization utilizes the pressure difference between the inside and the outside of the outlet of the nozzle to lead the micro bubbles to expand and break rapidly after leaving the outlet, and break the liquid film into liquid mist, the required gas phase pressure is higher, but the gas consumption is smaller; pneumatic atomization utilizes high-speed airflow to impact liquid to atomize the liquid, and the gas consumption is high, but the gas phase pressure is low.
Magnetization techniques can alter the physical properties of water and the associated structure of a body of water. The difficulty of droplet atomization depends to some extent on the surface tension and dynamic viscosity of the water: the larger the surface tension and dynamic viscosity of the fluid are, the higher the difficulty of deformation and crushing of the liquid film is, and the poorer the atomization effect is. The weaker the fluid association structure, the slower the liquid evaporation rate. The physical properties of the water treated by the magnetic field can be changed, so that the difficulty of liquid drop atomization is reduced.
As described above, the atomization difficulty can be reduced by using the magnetic field effect, but the existing atomization nozzles do not combine magnetization and gas-phase-assisted atomization, so that the conditions required by pure gas-phase-assisted atomization are high, the cost is high, and the industrial requirements are difficult to meet; most of the existing magnetizing devices need larger field intensity and longer magnetizing distance and are influenced by a plurality of environmental factors influencing magnetic field distribution, such as electromagnetic device intervention and the like, so that the problems of large volume, inflexibility, instability, poor magnetizing effect or lack of pertinence generally exist.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an atomizing device that supplementary and the gaseous phase of magnetization combined together has reduced the supplementary required condition and the cost of atomizing of gaseous phase.
In order to achieve the above object, the utility model adopts the following technical scheme:
an atomization device combining magnetization assistance and gas phase assistance comprises a water tank, a centrifugal machine, an air compressor, a magnetization device and a gas phase assistance atomization nozzle, wherein an outlet of the water tank is connected with an inlet of the centrifugal machine, an outlet of the centrifugal machine is connected with an inlet of the magnetization device, and an outlet of the magnetization device is connected with the gas phase assistance atomization nozzle; the air compressor is connected with the gas-phase auxiliary atomizing nozzle; the gas-phase auxiliary atomizing nozzle comprises a cylindrical shell; one end of the shell is provided with a liquid inlet, and the other end of the shell is provided with a cyclone outlet; the middle part of the side wall of the shell is provided with a plurality of air inlets, a Venturi tube type inner flow passage is arranged in the shell, one end of the Venturi tube type inner flow passage is connected with the liquid inlet, the other end of the Venturi tube type inner flow passage is provided with a plurality of bubble-shaped outflow ports, the side wall of the diffusion section of the Venturi tube type inner flow passage is provided with a plurality of aeration holes, the outer side of the Venturi tube type inner flow passage is provided with a cavity, one end of the cavity is connected with the air inlets, the other end of the cavity; the bubble-shaped outflow port is communicated with the cyclonic flow outlet.
The utility model discloses a further improvement lies in, and the gas whirl export is located venturi tube formula inner flow way's axis.
The utility model discloses further improvement lies in, and the cavity is the formula of tapering intake duct.
The utility model discloses further improvement lies in, is provided with a plurality of spinning disks in the cavity, and a plurality of spinning disks are along circumference evenly distributed.
The utility model discloses a further improvement lies in, and single spinning disk rotation angle is 30 to 40.
The utility model is further improved in that the magnetizer comprises a metal corrugated pipe, a magnetizing ring, a built-in hose and a plurality of magnetizer shells; the magnetic ring is arranged in each magnetizing device shell, each magnetizing ring comprises a plurality of neodymium iron boron magnetic blocks, and a group of Halbach arrays are formed by the neodymium iron boron magnetic blocks.
The utility model is further improved in that one end of the built-in hose is provided with a front connecting thread, and the other end is provided with a rear connecting thread; the magnetizing device is connected with the gas-phase auxiliary atomizing nozzle through a back connecting thread; the outlet of the centrifuge is connected with the inlet of the magnetizing device through the front connecting thread.
The utility model discloses further improvement lies in, and the distance of magnetic field and the supplementary atomizing nozzle of gaseous phase is 5 ~ 15cm among the magnetization unit.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a set up magnetization unit and the supplementary atomizing nozzle of gaseous phase, usable magnetization unit passes through the association structure of the normal water of magnetization process to reduce the surface tension and the dynamic viscosity of water, increase the Weber number, reduce the demand of bubble atomizing to gaseous phase gauge pressure, form the condition that is favorable to the bubble atomizing, and then promote pneumatics, the high-efficient combination of bubble atomization technique, reduce the atomizing particle diameter, improve the atomizing degree of consistency, improve evaporation rate, and reduce the required cost of the supplementary atomizing of gaseous phase. The utility model provides a magnetization unit can realize that surface tension's reduction and evaporation rate's increase under the 20 ℃ to 25 ℃ condition. The required field intensity is smaller, the volume of the magnetizer is effectively reduced, and the use flexibility is enhanced; hardly influenced by electromagnetic equipment in a working environment, and has stable effect.
When the utility model is used, the distance from the nozzle is only 100mm, the gas phase gauge pressure is only 80kPa, and the liquid phase flow is 40kg/h, the mean diameter of the Sortel is only 13.63 μm, the cone angle is 50 degrees, and the nozzle is far superior to the existing various air atomizing nozzles. In this condition, the spray mean evaporation time is only 19.41 ms. The utility model discloses an even, fine, efficient atomizing has characteristics such as green, cyclic utilization, economic benefits height. Meanwhile, the method has simple process and low cost, can be used for various gas-phase auxiliary atomizing nozzles, and is suitable for batch production.
Drawings
Fig. 1 is a schematic view of the connection of the device of the present invention;
FIG. 2 is a combined structure diagram of the gas phase auxiliary atomizing nozzle and the magnetizing device in the present invention;
FIG. 3 is a structural view of the magnetizing apparatus of the present invention;
FIG. 4 is a schematic view of a gas phase-assisted atomizing nozzle according to the present invention;
FIG. 5 is a diagram showing the distribution of atomized particle size under the same condition without using the present invention;
fig. 6 is a distribution diagram of the atomized particle size generated by the method of the present invention under the same working condition.
In the figure, 1 is a gas phase auxiliary atomizing nozzle, 2 is a magnetizer, 3 is an air valve, 4 is an air compressor, 5 is a centrifuge, 6 is a water tank, 7 is a liquid valve, 8 is a front connecting thread, 9 is a magnetizer shell, 10 is a metal corrugated pipe, 11 is a magnetizing ring, 12 is a built-in hose, 13 is a rear connecting thread, 14 is a liquid inlet, 16 is a venturi tube type inner flow passage, 17 is an air inlet, 18 is an aeration hole, 19 is a swirl plate, 20 is a tapered air passage, 21 is a bubble-shaped outflow port, and 22 is a gas swirl outlet.
Detailed Description
The present invention will be described in detail with reference to the following embodiments.
Referring to fig. 1 and 2, the utility model discloses an atomization device that combines magnetization assistance and gas phase assistance, including water tank 6, centrifuge 5, air compressor 4, pneumatic valve 3, liquid valve 7, magnetization unit 2 and gas phase assistance atomizing nozzle 1, wherein, the export of water tank 6 is continuous with centrifuge 5's entry through the water pipe, centrifuge 5's export is divided into two routes, one route links to each other with water tank 6's entry, another route links to each other with magnetization unit 2's entry through liquid valve 7, magnetization unit 2's export links to each other with gas phase assistance atomizing nozzle 1; the air compressor 4 is connected with the gas-phase auxiliary atomizing nozzle 1 through the air valve 3.
Referring to fig. 4, the gas-phase-assisted atomizing nozzle 1 is a bubble atomizing nozzle, a pneumatic atomizing nozzle or a nozzle combining bubble atomizing and pneumatic atomizing, and includes a cylindrical housing, a liquid inlet 14, a venturi-type inner flow passage 16, a gas inlet 17, an aeration hole 18, a swirl vane 19, a tapered gas passage 20, a bubble-shaped outlet 21 and a cyclonic flow outlet 22. Wherein, one end of the shell is provided with a liquid inlet 14, and the other end is provided with a cyclone outlet 22; a plurality of air inlets 17 have been seted up at casing lateral wall middle part, be provided with venturi formula internal flow way 16 in the casing, 16 one end in venturi formula internal flow way links to each other with inlet 14, and the other end is provided with a plurality of bubble egress openings 21, and venturi formula internal flow way 16 is including continuous entry section, contraction section and diffusion section, has seted up a plurality of aeration holes 18 on the lateral wall of the diffusion section of venturi formula internal flow way 16, and the venturi formula internal flow way 16 outside is provided with the cavity, and the cavity is the formula of tapering intake duct. One end of the cavity is connected with the air inlet 17, the other end of the cavity is communicated with the air swirl flow outlet 22, one end of the aeration hole 18 is communicated with the cavity, and the other end of the aeration hole is communicated with the Venturi tube type inner flow channel 16; the bubble outflow port 21 communicates with the cyclone flow outlet 22.
The cyclonic flow outlet 22 is located on the central axis of the venturi-type inner flow passage 16.
Specifically, the inner diameter of the liquid inlet 14 is 16 mm; the inner diameter of the air inlet 17 is 6 mm; the Venturi inner flow passage 16 is gradually reduced from the diameter of 16mm to the diameter of 8 mm; aeration hole 18 and air inlet 17 adopt the hedging structure, and relative setting is promptly, so be convenient for gaseous entering aeration hole 18 in, aeration hole 18 totally 42, the diameter is 0.7mm, arranges with three rows side by side form, does benefit to the air admission. The gas forming bubbles in the intake air is partly pressed into the liquid flow by the difference between the inside and outside pressures of the aeration holes 18, and partly flushed into the aeration holes 18 due to the opposed arrangement of the aeration holes 18 and the air inlets 17.
The total number of the bubble-shaped outflow openings 21 is 4, and the bubble-shaped outflow openings are arranged in a regular quadrilateral arrangement, namely are uniformly distributed in the circumferential direction, so that the crushing effect can be enhanced, the crushing process can be stabilized, and the liquid phase flow rate can be greatly increased. Each bubble flow outlet 21 has a radius of 1mm, and the distance between the centers of adjacent bubble flow outlets 21 is 1.41 mm.
A plurality of swirl vanes 19 are provided in the cavity. The spinning disks 19 are uniformly distributed along the circumferential direction, 6 spinning disks are arranged, the rotating angle of each single spinning disk 19 is 30 degrees to 40 degrees, preferably 34.5 degrees, the angle difference of the adjacent spinning disks 19 is 60 degrees, and the gas generates high-speed spinning gas through the 6 spinning disks 7, so that the pneumatic atomization part is realized.
The axial distance between the bubble-like flow outlet 21 and the swirling flow outlet 22 was 15.3 mm.
Referring to fig. 3, the magnetizer 2 includes a front coupling thread 8, a magnetizer case 9, a metal bellows 10, a magnetizing ring 11, an inner hose 12, and a rear coupling thread 13. Wherein, a plurality of annular magnetizer shells 9 are arranged outside the built-in hose 12, and the plurality of magnetizer shells 9 are sleeved on the outer wall of the built-in hose 12. Two adjacent magnetizer casings 9 are connected through a metal corrugated pipe 10, a magnetizing ring 11 is arranged in each magnetizer casing 9, each magnetizing ring 11 comprises 8 neodymium iron boron magnetic blocks with remanence of 0.7T, the 8 neodymium iron boron magnetic blocks form a group of Halbach (Halbach array) structure magnetizing units according to a certain arrangement mode, and a magnetic field in an air gap of each magnetizing ring is a uniform and strong constant magnetic field with 0.2T vertical upward. Each magnetizing ring 11 has an axial length of 30mm along the hose 12. The cross section of the outer wall of the built-in hose 12 is regular octagon, and the cross section of the inner wall is circular. The built-in hose 12 has a front connection thread 8 at one end and a rear connection thread 13 at the other end. The magnetizing device 2 and the gas phase auxiliary atomizing nozzle 1 are connected through a rear connecting thread 13.
The utility model discloses in the supplementary atomizing method that combines together with the gaseous phase of magnetization based on foretell device does:
1) compressed gas is introduced into an air inlet 17 of the gas-phase auxiliary atomizing nozzle 1 through the air compressor 4, one part of the compressed gas enters the Venturi tube type inner flow channel 16 through the aeration holes 18, and the other part of the compressed gas is sprayed out from the cyclone flow outlet 22 in a cyclone flow mode through the action of the cyclone sheet 19, so that the water body atomizing condition is created.
Wherein the gas phase gauge pressure required by the gas phase auxiliary atomizing nozzle 1 is 50-200 kPa, preferably 80 kPa.
2) The water is introduced into the magnetizing device 2 through the centrifugal machine 5 for magnetization, the magnetization operation is completed, the magnetized water flows into the gas phase auxiliary atomizing nozzle 1 and flows through the Venturi tube type inner flow passage 16, the flow speed is increased through the reducing structure of the Venturi tube type inner flow passage 16, the pressure intensity is reduced, and a small amount of gas introduced from the gas inlet 17 enters the water through the plurality of aeration holes 18 in a bubble form to form bubble-shaped two-phase flow; the bubble two-phase flow is sprayed out through the bubble outlet 21, so that the liquid is crushed for the first time; the crushed liquid drops are impacted by high-speed rotational flow gas sprayed from the gas rotational flow outlet 22 in the step 1) to finish secondary shearing, so that secondary crushing is realized.
Wherein the liquid phase flow required by the gas phase auxiliary atomizing nozzle is 40 kg/h; the water flow speed in the magnetizing device is constant and is 0.2 m/s; the length of an effective magnetic field in the magnetizing device is more than 100mm, preferably 20-30 cm, the diameter of an air gap of the magnetizing ring 11 is more than 10, preferably 15-25 mm, the magnetic field is perpendicular to the water flow direction, and the intensity is constant and is 170-200 mT, preferably 200 mT; the water temperature is 20-25 ℃. The distance between the constant magnetic field and the gas-phase auxiliary atomizing nozzle 1 is 5-15 cm. The diameter of the bubble discharge port 21 was 1 mm.
Not use the utility model discloses an atomizing particle size distribution under the same operating mode is shown in figure 5: under the condition of singly using the gas-phase auxiliary atomizing nozzle, when the liquid phase flow rate is 40kg/h and the gas-phase pressure is 80kPa, the atomizing particle size is 23.06mm, the atomizing droplet evaporation time is 42.11ms, the optimal atomizing effect is achieved at the position 170mm away from the nozzle, convergence occurs at the position 300mm away from the nozzle, and the atomizing particle size is 44.65 mm.
The atomization particle size distribution produced by the method in the utility model is shown in figure 6: use the utility model discloses an utilize gas phase of magnetic field effect to assist atomizing method is 40kg/h at the liquid phase flow, and when gaseous phase pressure was 80kPa, the atomizing particle diameter was 13.63mm, and atomizing liquid drop evaporation time was 19.57ms, and apart from nozzle 100mm department reach best atomization effect, and do not take place to collect afterwards.
The utility model discloses the atomizing result that produces has characteristics such as high efficiency, fine, even and the required distance of atomizing is extremely short, simultaneously, and this utility model can use to the supplementary atomizing nozzle of all gaseous phases, and the improvement range is unanimous basically.
The utility model greatly reduces the conditions and cost required by gas-phase auxiliary atomization through constant magnetic field treatment; meanwhile, the method has the advantages of simple process, short period, environmental protection and low production cost, and accords with the sustainable development concept.
Claims (8)
1. The atomization device combining magnetization assistance and gas phase assistance is characterized by comprising a water tank (6), a centrifugal machine (5), an air compressor (4), a magnetization device (2) and a gas phase assistance atomization nozzle (1), wherein an outlet of the water tank (6) is connected with an inlet of the centrifugal machine (5), an outlet of the centrifugal machine (5) is connected with an inlet of the magnetization device (2), and an outlet of the magnetization device (2) is connected with the gas phase assistance atomization nozzle (1); the air compressor (4) is connected with the gas-phase auxiliary atomizing nozzle (1); the gas-phase auxiliary atomizing nozzle (1) comprises a cylindrical shell; one end of the shell is provided with a liquid inlet (14), and the other end is provided with a cyclone outlet (22); the middle part of the side wall of the shell is provided with a plurality of air inlets (17), a Venturi tube type inner flow passage (16) is arranged in the shell, one end of the Venturi tube type inner flow passage (16) is connected with the liquid inlet (14), the other end of the Venturi tube type inner flow passage is provided with a plurality of bubble-shaped outflow ports (21), the side wall of the diffusion section of the Venturi tube type inner flow passage (16) is provided with a plurality of aeration holes (18), the outer side of the Venturi tube type inner flow passage (16) is provided with a cavity, one end of the cavity is connected with the air inlets (17), the other end of the cavity is communicated with the cyclone outflow ports (22; the bubble-like outflow port (21) communicates with the cyclonic outflow port (22).
2. A combined magnetisation-assisted and gas-phase-assisted atomisation device as claimed in claim 1, in which the cyclonic flow outlet (22) is located on the central axis of the venturi-like internal flow passage (16).
3. The atomizing device combining magnetization assist and gas phase assist as set forth in claim 1, wherein the cavity is a tapered air inlet.
4. A combined magnetization-assisted and gas-phase-assisted atomizer device according to claim 1, characterized in that a plurality of swirl plates (19) are arranged in the cavity, and the swirl plates (19) are circumferentially and uniformly distributed.
5. A combined magnetization-assisted and gas-phase-assisted atomizer device according to claim 1, characterized in that the individual spinning disk (19) is rotated through an angle of 30 ° to 40 °.
6. A combined magnetisation-assisted and gas-phase-assisted atomising device according to claim 1, characterised in that the magnetisation means (2) comprises a metal bellows (10), a magnetisation ring (11), an internal hose (12) and a number of magnetisation means housings (9); the magnetizing device comprises a plurality of magnetizing device shells (9), a built-in hose (12), a metal corrugated pipe (10), a magnetizing ring (11) and a plurality of magnetic blocks, wherein the magnetizing device shells (9) are sleeved on the outer wall of the built-in hose (12), two adjacent magnetizing device shells (9) are connected with each other through the metal corrugated pipe (10), each magnetizing ring (11) is arranged in each magnetizing device shell (9), each magnetizing ring (11) comprises a plurality of neodymium iron boron magnets, and a group of Halbac.
7. A combined magnetization-assisted and gas-phase-assisted atomizing device according to claim 6, characterized in that the built-in hose (12) is provided with a front connecting thread (8) at one end and a rear connecting thread (13) at the other end; the magnetizing device (2) is connected with the gas-phase auxiliary atomizing nozzle (1) through a rear connecting thread (13); the outlet of the centrifuge (5) is connected with the inlet of the magnetizing device (2) through a front connecting thread (8).
8. A combined magnetization-assisted and gas-phase-assisted atomizer device according to claim 1, characterized in that the distance between the magnetic field in the magnetization device and the gas-phase-assisted atomizer nozzle (1) is 5-15 cm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921226020.5U CN210875852U (en) | 2019-07-31 | 2019-07-31 | Atomization device combining magnetization assistance and gas phase assistance |
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| CN201921226020.5U CN210875852U (en) | 2019-07-31 | 2019-07-31 | Atomization device combining magnetization assistance and gas phase assistance |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110523553A (en) * | 2019-07-31 | 2019-12-03 | 西安交通大学 | A kind of atomization method and device magnetizing auxiliary in conjunction with gas phase auxiliary phase |
| CN111803766A (en) * | 2020-07-17 | 2020-10-23 | 山东大学 | Method for improving atomization effect |
| CN111981748A (en) * | 2020-09-01 | 2020-11-24 | 广州极速制冷设备有限公司 | Liquid nitrogen instant freezer |
-
2019
- 2019-07-31 CN CN201921226020.5U patent/CN210875852U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110523553A (en) * | 2019-07-31 | 2019-12-03 | 西安交通大学 | A kind of atomization method and device magnetizing auxiliary in conjunction with gas phase auxiliary phase |
| CN111803766A (en) * | 2020-07-17 | 2020-10-23 | 山东大学 | Method for improving atomization effect |
| CN111981748A (en) * | 2020-09-01 | 2020-11-24 | 广州极速制冷设备有限公司 | Liquid nitrogen instant freezer |
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