CN113977344B - Ultrasonic vibration atomization rotating jet cooling device and operation process thereof - Google Patents
Ultrasonic vibration atomization rotating jet cooling device and operation process thereof Download PDFInfo
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- CN113977344B CN113977344B CN202111384585.8A CN202111384585A CN113977344B CN 113977344 B CN113977344 B CN 113977344B CN 202111384585 A CN202111384585 A CN 202111384585A CN 113977344 B CN113977344 B CN 113977344B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/10—Arrangements for cooling or lubricating tools or work
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B17/00—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups
- B05B17/04—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods
- B05B17/06—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations
- B05B17/0607—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations generated by electrical means, e.g. piezoelectric transducers
- B05B17/0623—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations generated by electrical means, e.g. piezoelectric transducers coupled with a vibrating horn
- B05B17/063—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations generated by electrical means, e.g. piezoelectric transducers coupled with a vibrating horn having an internal channel for supplying the liquid or other fluent material
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
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Abstract
The invention relates to an ultrasonic vibration atomization rotating jet cooling device and an operation process thereof. The ultrasonic power supply is started to output a high-frequency oscillation electric signal, the piezoelectric ceramic transducer receives the electric signal and converts the electric signal into mechanical vibration, the longitudinal vibration amplitude transformer amplifies the vibration and transmits the vibration to the bending vibration atomization circular plate through the vibration transmission rod, meanwhile, the cooling liquid flows to the antinode of the bending vibration atomization circular plate from the amplitude transformer inlet and forms atomized liquid drops under the action of bending vibration, and high-pressure gas blown in by the high-pressure gas inlet unit drives the atomized liquid drops to be sprayed to a cutting processing area from the nozzle unit in a rotary jet flow mode.
Description
Technical Field
The invention belongs to the technical field of machining and cooling, and relates to an ultrasonic vibration atomization rotary jet cooling device.
Background
The cutting edges of the tool are always subjected to high mechanical and thermal loads during the cutting process of the metal material. The mechanical load enables the front cutter face and the rear cutter face of the cutter to bear larger friction force, so that the cutter is gradually worn and dull until the cutting capability is lost; the thermal load obviously reduces the main mechanical performance index of the cutter, and the cutter abrasion is aggravated. Therefore, how to provide good cooling and lubricating conditions during the cutting process to reduce the friction force and the cutting temperature of the tool becomes the key point for improving the durability of the tool and the processing quality. At present, in the face of the development trend that the requirements for processing efficiency, quality, economy and environmental protection of various novel difficult-to-process materials are increasingly improved, the defects that the environment is polluted by pouring and cooling of the traditional cutting fluid are urgently needed to be solved, the problems that the cooling of an MQL method (abbreviation of minimum quality regulation) is insufficient, a workpiece is excessively cooled by a liquid nitrogen and dry ice low-temperature cooling method, the flow of the cooling fluid of a high-pressure jet technology is overlarge and the like are solved, and the aims of timely dredging a large amount of cutting heat accumulated in a processing area and improving the service life of a cutter and the quality of a processed surface are achieved. In addition, the cooling method is not effective in further improving the cutting efficiency. Therefore, development of a new green cooling technology is urgently required.
The spray cooling is to mix trace liquid into pressure airflow to form a mist-shaped gas-liquid two-phase fluid, and the mist generates jet flow through spraying and is sprayed to a cutting area, so that a workpiece and a cutter are fully cooled and lubricated. When the gas-liquid two-phase fluid is sprayed out, the volume suddenly expands to do work externally, the internal energy is consumed, and the temperature can be reduced by about 10 ℃. The two-phase fluid has higher speed in spray cooling, can flush away the cuttings in time and take away a large amount of heat, and further enhances the cooling effect. Thus, spray cooling actually combines the cooling effects and advantages of both gas and liquid fluids. The ultrasonic spraying technology is a novel technology for changing the atomization mode of the cooling liquid, the cooling liquid is effectively atomized through ultrasonic high-frequency vibration, atomized particles can become smaller and more uniform under the high-frequency vibration, meanwhile, due to the effect of high-pressure air, the atomized particles become spray with high initial speed, large kinetic energy and strong permeability, the gas barrier separation of a processing area can be broken through, accurate arrival is achieved by the processing area, and a good cooling effect is achieved.
The invention patent (publication number: CN 101966661A) discloses an ultrasonic focusing steam fog cooler, which sprays cooling liquid on a steam fog cover, and ultrasonic vibration drives the steam fog cover to vibrate so that the cooling liquid is atomized and sprayed to a grinding area to achieve the effect of reducing the grinding temperature. The invention patent (publication number: CN 109571157B) discloses an ultrasonic-assisted vaporization cooling double-circle grinding system with a fog gun, which atomizes grinding fluid by applying vibration to a liquid storage tank of the grinding fluid, then sucks the atomized liquid into a fog gun barrel through a quantitative pump, and applies high-pressure air in the fog gun barrel to spray the atomized liquid to a grinding area so as to achieve the effect of reducing the grinding temperature. The atomization and spray devices of this system are too far apart, resulting in re-agglomeration of atomized particles, increasing droplet diameter, and reducing cooling effectiveness.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides the ultrasonic vibration atomization rotary jet device which is simple in structure, good in atomization effect, high in spray jet speed and stable in direction and the operation process thereof.
The utility model provides an ultrasonic vibration atomizing rotary jet cooling device, includes ultrasonic atomization system, vapor and fog mix bin, high pressure air inlet unit, nozzle unit.
The piezoelectric ceramic transducer is connected with the front end of the longitudinal vibration amplitude transformer through a double-ended stud; the flange plate at the position of the node of the longitudinal vibration amplitude transformer is connected with the left wall of the steam-fog mixing storage box through a bolt; the front end of the vibration transmission rod is connected with the tail end of the longitudinal vibration amplitude transformer through threads, and the tail end of the vibration transmission rod is fixed on the right wall of the steam-fog mixing storage tank;
the steam-fog mixing storage tank comprises a main tank body and a cover plate, wherein the cover plate is provided with a threaded hole and is connected with the upper end of the main tank body through a bolt;
the high-pressure air inlet unit comprises an air inlet pipeline and a conical cover, and the air inlet pipeline is connected with the conical cover through threads; the high-pressure air inlet unit is connected with the rear wall of the vapor-fog mixed storage box body through a flange on the conical cover;
the nozzle unit comprises a nozzle and a conical cover, and the nozzle is connected with the conical cover through threads; the nozzle unit is connected with the front wall of the steam-fog mixing box body through a flange on the conical cover.
A circular hole along the radial direction is formed from the circumferential surface of the flange plate of the longitudinal vibration amplitude transformer to the circle center, and a circular hole along the axial direction is formed from the circle center of the flange plate to the center of the tail end of the longitudinal vibration amplitude transformer; meanwhile, the tail end of the longitudinal vibration amplitude transformer is provided with a threaded hole concentric with the round hole.
The vibration transmission rod is a three-section stepped shaft structure with small diameters at two ends and large diameter at the middle, the total length of the vibration transmission rod meets 1.25 times of wavelength, the axial lengths of the front section, the middle section and the rear section are respectively 0.5 time of wavelength, 0.5 time of wavelength and 0.25 time of wavelength, steps are arranged at the transition positions of the front section, the middle section and the rear section, are provided with threads and are arranged in radial through holes, and a hole with the wavelength of 1 time along the axial center is arranged from the front end to the tail end of the vibration transmission rod.
The radius of the bending vibration atomization circular plate meets the multi-order vibration wavelength, and an axial threaded through hole is formed in the center; an annular groove is formed in the inner surface through which the threaded hole passes; a plurality of through-penetrating channels are uniformly arranged in the inner part along the radial direction; one end of the outer circumferential surface of the pore passage is provided with a thread; and small holes which are vertically communicated with the pore canal are formed at antinodes along the radial direction.
The inner wall of the nozzle unit is provided with a plurality of spiral grooves, and the grooves can be rectangular, trapezoidal or triangular.
An operation process of an ultrasonic atomization rotating jet flow cooling device comprises the following steps:
(1) Turning on an ultrasonic power supply to output a high-frequency oscillation electric signal, receiving the electric signal by the piezoelectric ceramic transducer 5, converting the electric signal into mechanical vibration, and transmitting the mechanical vibration to a longitudinal vibration amplitude transformer connected with the piezoelectric ceramic transducer;
(2) The longitudinal vibration amplitude transformer amplifies mechanical vibration, transmits the mechanical vibration to two bending vibration atomization circular plates which are sleeved at the wavelength which is 0.5 times and the wavelength which is 1.5 times of that of the vibration transmission rod through the vibration transmission rod, simultaneously inputs cooling liquid from an inlet of the amplitude transformer, and conveys the cooling liquid to a liquid outlet small hole 29 at the antinode of the bending vibration atomization circular plates after passing through a liquid inlet pipeline 16 and a liquid conveying channel 22, and atomized liquid drops are formed under the action of bending vibration;
(3) The high-pressure air inlet unit blows high-pressure air into the main box body 10 through a uniform air inlet hole 31 formed in the rear wall of the main box body 10 to drive atomized liquid drops to be sprayed to a cutting area in a rotary jet mode from a rotary groove in a nozzle of the nozzle unit.
Has the beneficial effects that:
(1) The invention transmits the vibration amplified by the longitudinal vibration amplitude transformer to the bending vibration atomization circular plate through the vibration transmission rod, so that the bending vibration circular plate generates bending vibration of a plurality of antinodes, and further the cooling liquid is atomized with high efficiency and high quality, and simultaneously high-pressure gas is introduced into the steam-fog mixed storage tank after atomization to drive the atomized liquid to be sprayed to a processing area, and the spraying direction is more stable under the action of the spiral groove of the nozzle. In the device provided by the invention, the bending vibration atomization disc is fixed at different wavelengths of the vibration transmission rod, and the vibration transmission rod converts longitudinal vibration into bending vibration to atomize the cooling liquid. Meanwhile, high-pressure air is blown in from the air inlet to drive atomized liquid to be sprayed to the processing area in a rotary jet flow mode. Ultrasonic atomization utilizes high frequency vibration can make the coolant liquid atomizing back granule more tiny, and the atomizing volume can effectively be increased to a plurality of antinode structures of bending vibration atomizing disc, and simultaneously under high-pressure gas's drive, the jet velocity of atomized liquid is bigger, can effectively reduce the temperature in processing district.
(2) The device provided by the invention is provided with the two bending vibration atomizing disks, so that the atomizing amount can be increased, and the cooling effect can be enhanced. The inner wall of the nozzle unit consisting of the conical cover and the nozzle is provided with a spiral groove, so that the rotating speed of the steam-fog mixture can be improved, and the divergence of the steam-fog mixture is reduced.
(3) The high-pressure air inlet unit comprises an air inlet pipeline and a conical cover, speed can be provided for atomized liquid drops, a vapor-mist mixture body is formed, atomized cooling liquid sprayed by the disk is subjected to bending vibration in the vapor-mist mixing box body and is mixed with high-pressure air blown in by the air inlet, and the gas-liquid two-phase cooling body not only improves the cooling effect, but also avoids the waste of the cooling liquid.
Drawings
FIG. 1 is a cross-sectional view of an ultrasonic atomizing rotary jet cooling device of the present invention;
FIG. 2 is a schematic diagram of the construction of an ultrasonic atomization system;
FIG. 3 is a schematic structural view of a vapor-liquid mixing box;
FIG. 4 is a schematic structural view of a high pressure intake unit;
FIG. 5 is a schematic structural view of a nozzle unit;
FIG. 6 is a cross-sectional view of the longitudinal vibration horn of FIG. 2;
FIG. 7 is a cross-sectional view of the vibration rod of FIG. 2;
FIG. 8 is a cross-sectional view of the curved vibrating atomizing disk of FIG. 2;
FIG. 9 is a schematic structural view of the main body of FIG. 3;
FIG. 10 is a schematic view of the construction of the conical shroud of FIGS. 3 and 4;
FIG. 11 is a schematic view of the nozzle of FIG. 5;
fig. 12 is a graph showing the vibration effect of the bending vibration atomizing disk.
Description of the main reference numerals:
the ultrasonic atomizing system comprises an ultrasonic atomizing system-1, a vapor-fog mixing box body-2, a high-pressure air inlet unit-3, a nozzle unit-4, a piezoelectric ceramic transducer-5, a longitudinal vibration amplitude transformer-6, a bending vibration atomizing circular plate-7, a vibration transfer rod-8, a cover plate-9, a main box body-10, a conical cover-11, a high-pressure air inlet pipeline-12, a conical cover-13, a nozzle-14, a threaded hole-15, a liquid inlet pipeline-16, a threaded hole-17, a flange plate-18, a front end thread-19, a antinode thread-20, a tail end thread-21, a liquid feeding channel-22, a radial through hole-23, a vibration transfer rod step shaft-24, a threaded through hole-25, a liquid inlet groove-26, a radial through hole-27, a radial pore channel thread-28, a liquid outlet hole-29, an amplitude transformer fixing circular hole-30, a uniform air inlet hole-31, a vapor-fog mixing box body upper end thread-32, a threaded hole-33, a jet hole-34, a flange plate-35 and an internal thread-36.
Detailed Description
The technical solution of the present invention will be described in detail below with reference to the embodiments and the accompanying drawings.
Example 1
FIG. 1 is a cross-sectional view of an ultrasonic atomizing rotary jet device of the present invention. Referring to fig. 1, the ultrasonic atomization rotary jet device comprises an ultrasonic atomization system 1, a vapor-mist mixing box 2, a high-pressure air inlet unit 3 and a nozzle unit 4. Wherein, the middle part of the ultrasonic atomization system 1 is fixed at a fixed round hole at one side of the steam-fog mixing box body 2 through a flange plate, and the end part of the ultrasonic atomization system passes through the inside of the mixing box body 2 and then is fixed at a threaded hole 33 at the other side of the mixing box body 2. The ultrasonic atomization system 1 is provided with a bending vibration atomization circular plate at the part of the steam-fog mixing box body 2, and a high-pressure air inlet unit 3 and a nozzle unit 4 are oppositely arranged at the positions of the bending vibration atomization circular plate at the other two sides of the mixing box body 2. The number of the bending vibration atomization circular plates is two (the number can be adjusted according to actual requirements), the sizes of the bending vibration atomization circular plates are equal, and the bending vibration atomization circular plates are arranged in parallel. The ultrasonic atomization system 1 and the bending vibration atomization circular plate are internally provided with a cooling liquid conveying channel, and the opening is arranged at an antinode of the surface of the bending vibration atomization circular plate.
Fig. 2 is a schematic diagram of an ultrasonic atomization system, and the ultrasonic atomization system 1 comprises a piezoelectric ceramic transducer 5, a longitudinal vibration amplitude transformer 6, a bending vibration atomization circular plate 7 and a vibration transmission rod 8 which are connected in sequence from left to right. The bending vibration atomization circular plate 7 is sleeved on the vibration transmission rod 8 and is fixed by screw threads. The free end of the vibration transmission rod 8 is fixed on the inner side wall of the mixing box body 2.
Fig. 3 is a schematic view of a vapor-mist mixing box, comprising an end cap 9 and a main box 10. The side surfaces of the main box body 10 are provided with through holes respectively used for fixing the longitudinal vibration amplitude transformer 6, the vibration transmission rod 8, the high-pressure air inlet unit 3 and the nozzle unit 4 of the ultrasonic atomization system 1, and the holes at the opposite sides are coaxially arranged.
Fig. 4 is a schematic structural view of a high pressure air intake unit, which includes a conical cover 11 and a high pressure air intake duct 12, wherein the conical cover 11 is fixed on one side of the main body 10 and is communicated with the main body through a through hole.
Fig. 5 is a schematic structural view of a nozzle unit including a conical cover 13 and a nozzle 14, the conical cover 13 being fixed to the other side of the main casing 10 with respect to the conical cover 11 and communicating with each other through a through hole.
Fig. 6 is a cross-sectional view of the longitudinal vibration horn 6 of fig. 2, with the inlet conduit 16 disposed therein and connected to an external cooling fluid. The front end of the piezoelectric ceramic transducer is provided with a threaded hole 15 and is connected with the piezoelectric ceramic transducer through a stud; the tail end of the main box body is provided with a threaded hole 17 for connecting with a vibration transmission rod, a flange plate 18 of the main box body is positioned at an antinode, and threaded holes are uniformly distributed on the periphery of the flange plate and are used for connecting with a round hole 27 on the left wall of the main box body. The liquid inlet pipeline 16 is positioned at one end of the flange plate, and bends to the direction of the vibration transmission rod after reaching the axial center along the radial direction of the longitudinal vibration amplitude transformer 6.
FIG. 7 is a cross-sectional view of the vibration rod 8 of FIG. 2, with the vibration rod having a length of 1.25 wavelengths, three sections in front, middle and rear, and axial lengths of 0.5 wavelengths, 0.5 wavelengths and 0.25 wavelengths, respectively; two ends of the vibration transmission rod are respectively provided with a section of thread, the front end thread 19 is connected with the tail end threaded hole 17 of the amplitude transformer, and the tail end thread 21 is connected with the main box wall threaded hole 33; from the front end to the end of the vibration-transmitting rod, there is a liquid feeding channel 22 with a length of 1 time wavelength along the axial center, and the liquid feeding channel 22 is communicated with the liquid inlet pipe 16. The diameters of the front, middle and rear sections of the vibration transmission rod are different, and the diameter of the middle part is larger than that of the two end parts, so that a step shaft 24 is formed at the transition part of the front part and the middle part, the middle part and the rear part, and antinode threads 20 are arranged at the two ends of the step shaft 24 and are used for being connected with the bending vibration atomization circular plate 7; radial through holes 23 are also present in the step for atomizing the circular plate towards the bending vibration.
Fig. 8 is a cross-sectional view of a bending vibration atomization circular plate 7, the radius of which satisfies the multi-step vibration wavelength, the center of which is provided with a threaded through hole 25 for connecting with the vibration rod thread 19, and the threaded hole 25 is provided with a liquid inlet groove 26 for communicating with the radial through hole 23 on the vibration rod, so that the cooling liquid enters the pore channel in the bending vibration atomization circular plate; six radial through-channels 27 are radially and uniformly distributed on the circumferential surface of the bending vibration atomization circular plate. The outer sides of the six through-channels are provided with radial channel thread lines 28 which are used for being matched with screws to seal cooling liquid in the bending vibration atomization circular plate; liquid outlet holes 29 vertically penetrating through the through channels 27 are formed in antinodes of the bending vibration atomization circular plate in the radial direction, so that the cooling liquid flows to the surface of the bending vibration atomization circular plate.
Fig. 9 is a schematic structural diagram of the main tank 10 in fig. 3, in which through holes are formed in the front, rear, left and right top portions of the tank, specifically, a variable-amplitude rod fixing circular hole 30 and uniformly distributed threaded holes are formed in the left wall of the tank for matching with the flange 18 of the variable-amplitude rod; and a threaded hole 33 which is coaxial with the amplitude transformer fixing round hole 30 is formed in the right wall of the box body and is used for being connected with the tail end of the vibration transmission rod.
More than one uniform air inlet hole 31 is formed in the rear wall of the box body and used for uniformly blowing high-pressure air through the high-pressure air inlet unit 3, and meanwhile, a threaded hole is formed in the rear wall and used for being connected with the conical cover 11 of the high-pressure air inlet unit. Threaded holes 32 are respectively formed in four corners of the top of the box body and used for sealing with the end covers. The front wall of the box body is provided with a jet hole 34 for jetting out the atomized liquid, and the front wall is also provided with a threaded hole for connecting with the conical cover 13 of the nozzle unit.
Fig. 10 is a schematic structural view of the conical covers 11 and 13 in the high pressure air inlet unit 3 or the nozzle unit 4, wherein the large end of the conical cover is provided with a flange 35, threaded holes are uniformly distributed on the flange for connecting with the front wall and the rear wall of the main box body, and the small end is provided with internal threads 36 for connecting with an air inlet pipe or a nozzle.
Fig. 11 is a schematic structural diagram of a nozzle 14 in the nozzle unit 4, one end of which is threaded for connecting with the conical cover 13, and the interior of which is provided with a plurality of rotating grooves, and the shape of the grooves can be rectangular, trapezoidal or triangular, and is used for increasing the rotating speed of the atomized liquid when the atomized liquid passes through, so that the spraying direction is more accurate.
An operation process of an ultrasonic atomization rotating jet flow cooling device comprises the following steps:
(1) Turning on an ultrasonic power supply to output a high-frequency oscillation electric signal, receiving the electric signal by the piezoelectric ceramic transducer 5, converting the electric signal into mechanical vibration, and transmitting the mechanical vibration to a longitudinal vibration amplitude transformer connected with the piezoelectric ceramic transducer;
(2) The longitudinal vibration amplitude transformer amplifies the mechanical vibration, transmits the mechanical vibration to two bending vibration atomization circular plates which are sleeved at the wavelength which is 0.5 times that of the vibration transmission rod and the wavelength which is 1.5 times that of the vibration transmission rod through the vibration transmission rod, simultaneously inputs cooling liquid from an inlet of the amplitude transformer, and conveys the cooling liquid to a small liquid outlet hole 29 at the antinode of the bending vibration atomization circular plates after passing through a liquid inlet pipeline 16 and a liquid conveying channel 22, and atomized liquid drops are formed under the action of the bending vibration;
(3) The high-pressure air inlet unit blows high-pressure air into the main box body 10 through a uniform air inlet hole 31 formed in the rear wall of the main box body 10 to drive atomized liquid drops to be sprayed to a cutting area in a rotary jet mode from a rotary groove in a nozzle of the nozzle unit.
The ultrasonic spraying effect is shown in figure 12, the ultrasonic atomization can be seen, the particles are finer after the cooling liquid is atomized by utilizing high-frequency vibration, the atomization amount can be effectively increased by bending and vibrating a plurality of antinode structures of the atomization disc, and meanwhile, under the driving of high-pressure gas, the spraying speed of the atomized liquid is higher, and the temperature of a processing area can be effectively reduced.
The present embodiment is not intended to limit the shape, material, structure, etc. of the present invention in any way, and any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention are within the scope of the technical solution of the present invention.
Claims (2)
1. The utility model provides an ultrasonic vibration atomizing rotating jet cooling device which characterized in that: including ultrasonic vibration atomizing system, mixed box of vapour and fog, high pressure unit, the nozzle unit of admitting air, wherein:
the ultrasonic vibration atomization system (1) comprises a piezoelectric ceramic transducer (5), a longitudinal vibration amplitude transformer (6), a bending vibration atomization circular plate (7) and a vibration transmission rod (8) which are coaxially connected in sequence from left to right; the bending vibration atomization circular plate (7) is sleeved on the vibration transmission rod 8 and is fixed by means of threads; the radius of the bending vibration atomization circular plate meets the multi-order vibration wavelength, an axial thread through hole is formed in the center, an annular groove is formed in the inner surface through which the threaded hole passes, and after the bending vibration atomization circular plate is sleeved on the vibration transmission rod through the threaded hole, the groove is communicated with a radial through hole (23) in the vibration transmission rod; a plurality of through-channels are uniformly arranged in the bending vibration atomization circular plate along the radial direction; one end of the outer circumferential surface of the pore passage is sealed; liquid outlet holes are formed in antinodes along the radial direction;
the longitudinal vibration amplitude transformer (6) penetrates through a fixed round hole on one side of the steam-fog mixing box body (2) and is fixed through a flange plate (18) at the amplitude part, and the other end of the vibration transmission rod (8) is fixed on the inner side wall of the steam-fog mixing box body (2);
a flange plate (18) is arranged at the antinode of the longitudinal vibration amplitude transformer, a liquid inlet pipeline (16) is positioned at one side of the flange plate, and the flange plate is bent to the direction of the vibration transmission rod after reaching the axial center along the radial direction of the longitudinal vibration amplitude transformer (6);
a liquid inlet pipeline (15) is arranged in the longitudinal vibration amplitude transformer, one end of the liquid inlet pipeline is connected with external cooling liquid, and the other end of the liquid inlet pipeline is communicated with a liquid feeding channel (22) in the vibration transmission rod;
the length of the vibration transmission rod is 1.25 times of wavelength, the vibration transmission rod is divided into a front section, a middle section and a rear section along the axial direction, and the axial length is 0.5 times of wavelength, 0.5 times of wavelength and 0.25 times of wavelength respectively; the diameters of the two adjacent sections are different, and a step is formed at the transition position; a liquid feeding channel (22) with the length of 1 time of wavelength along the axis is arranged from the front end to the tail end of the vibration transmission rod, and a radial through hole (23) is formed in the step and used for conveying cooling liquid to the bending vibration atomization circular plate;
the high-pressure air inlet unit and the nozzle unit are correspondingly and respectively fixed at the front side and the rear side of the steam-fog mixing box body and opposite to the positions of the bending vibration atomization circular plates; the high-pressure air inlet unit comprises an air inlet pipeline and a conical cover, and the air inlet pipeline is connected with the conical cover through threads; the high-pressure air inlet unit is connected with the rear wall of the vapor-fog mixed storage box body through a flange on the conical cover; the nozzle unit comprises a nozzle and a conical cover, and the nozzle is connected with the conical cover through threads;
the nozzle unit is connected with the front wall of the steam-fog mixing box body through a flange on the conical cover; more than one rotary groove is formed in the nozzle (14) in the nozzle unit (4), and the groove can be rectangular, trapezoidal or triangular and is used for increasing the rotating speed of the atomized liquid when the atomized liquid passes through;
2. the process of operating an ultrasonic atomizing rotary jet cooling device according to claim 1, characterized by the steps of:
(1) The ultrasonic power supply is started to output a high-frequency oscillation electric signal, the piezoelectric ceramic transducer (5) receives the electric signal and converts the electric signal into mechanical vibration, and meanwhile, the mechanical vibration is transmitted to the longitudinal vibration amplitude transformer connected with the piezoelectric ceramic transducer;
(2) The longitudinal vibration amplitude transformer amplifies mechanical vibration, transmits the mechanical vibration to two bending vibration atomization circular plates which are sleeved at the wavelength which is 0.5 times that of the vibration transmission rod and the wavelength which is 1.5 times that of the vibration transmission rod through the vibration transmission rod, simultaneously inputs cooling liquid from an inlet of the amplitude transformer, and transmits the cooling liquid to a small liquid outlet hole (29) at the antinode of the bending vibration atomization circular plates after passing through a liquid inlet pipeline (16) and a liquid conveying channel (22) to form atomized liquid drops under the action of bending vibration;
(3) And the high-pressure air inlet unit blows high-pressure air into the main box body (10) through a uniform air inlet hole (31) formed in the rear wall of the main box body (10) to drive atomized liquid drops to be sprayed to a cutting area in a rotary jet mode from a rotary groove in a nozzle of the nozzle unit.
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| CN103056061A (en) * | 2013-01-27 | 2013-04-24 | 苏州科技学院 | Ultrasonic vibration atomizer |
| WO2015115006A1 (en) * | 2014-01-31 | 2015-08-06 | 株式会社良品計画 | Ultrasonic atomizer, ultrasonic humidifier, and ultrasonic aroma vaporization device |
| CN107899846A (en) * | 2017-11-21 | 2018-04-13 | 江西天祥通用航空股份有限公司 | A kind of ultrasonic atomizatio shower nozzle |
| CN108787299A (en) * | 2018-06-15 | 2018-11-13 | 江苏大学 | A kind of gas helps three parameter Weibull low-frequency ultrasonic atomizing nozzle of formula |
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2021
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