CN113289827A - Electromagnetic spraying device and using method thereof - Google Patents
Electromagnetic spraying device and using method thereof Download PDFInfo
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- CN113289827A CN113289827A CN202110567935.8A CN202110567935A CN113289827A CN 113289827 A CN113289827 A CN 113289827A CN 202110567935 A CN202110567935 A CN 202110567935A CN 113289827 A CN113289827 A CN 113289827A
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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
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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
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/02—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape
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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
- B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
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Abstract
The invention discloses an electromagnetic spraying device and a using method thereof, wherein the electromagnetic spraying device comprises an inert gas source and an electromagnetic spraying mechanism, wherein the outlet end of the inert gas source is connected with the gas inlet of the electromagnetic spraying mechanism; the electromagnetic spraying mechanism comprises a coating tank, a plurality of stages of electromagnetic accelerating mechanisms, a spray head, an accelerating pipeline and a coating chamber, wherein a discharge port of the coating tank is connected with a feed port of the coating chamber, one end of the coating chamber is provided with an air inlet, and the air inlet is connected with an outlet end of an inert gas source; the other end of the coating chamber is provided with a spray port, one end of the spray port is connected with the inlet end of the acceleration pipeline, and the outlet end of the acceleration pipeline is connected with the spray head; the plurality of stages of electromagnetic accelerating mechanisms are all arranged on the outer side of the accelerating pipeline and are sequentially arranged along the axis of the accelerating pipeline; the invention has simple structure and lower cost; a magnetic field is formed in the accelerating pipeline by utilizing a plurality of stages of electromagnetic accelerating mechanisms to sequentially accelerate the paint particles, so that the paint particles are less wasted in a spraying path, have low environmental pollution and are well combined with the surface of a base material.
Description
Technical Field
The invention belongs to the technical field of material surface spraying processing, and particularly relates to an electromagnetic spraying device and a using method thereof.
Background
The surface spraying technology belongs to the field of surface engineering, and the surface engineering is a system engineering which is characterized in that after the surface of a material is pretreated, the form, chemical components, tissue structure and stress condition of a metal surface or a non-metal surface are changed through surface coating, surface modification or multiple surface technology composite treatment so as to obtain the required performance of the surface. The surface spraying processing technology is the most common surface engineering technology at present, and is characterized in that certain special properties which cannot be possessed by a body material can be obtained without changing the overall material of the material, the process cost is low, and the thickness of a surface covering layer obtained by the surface spraying processing technology is generally dozens of microns to several millimeters. Therefore, the material surface spraying technology is widely applied to the fields of aviation, aerospace, automobiles, sports life, mechanical manufacturing and the like.
The surface spraying technology commonly used at present mainly comprises a thermal spraying technology and a cold spraying technology, the thermal spraying technology comprises plasma spraying, ultra-fast flame spraying, explosion spraying and the like, the thermal spraying technology is mainly suitable for the surfaces of materials with higher melting points such as metals and the like, the cold spraying work production efficiency is higher, and the surface spraying technology is mainly suitable for manual operation and industrial automatic production.
Although the spraying technology has high efficiency, the defects are obvious; if the thermal spraying process needs higher temperature, the gas and other harmful substances generated in the high-temperature process are not beneficial to the health of people, the production environment is severe, and the production emission is not beneficial to the national environmental protection policy; the cold spray process generally requires pretreatment of the material surface, which requires acceleration of the coating particles to a higher velocity, typically with a high velocity gas stream, to achieve good bonding of the coating to the material surface. The spray technology of supersonic speed can make the spray speed of the particles higher, which can effectively solve the problems, but the supersonic speed spray technology has higher cost and complex equipment.
Disclosure of Invention
Aiming at the technical problems in the prior art, the invention provides an electromagnetic spraying device and a using method thereof, aiming at solving the technical problems of serious waste of coating particles, higher environmental pollution and complex spraying equipment in the existing surface spraying process.
In order to achieve the purpose, the invention adopts the technical scheme that:
the invention provides an electromagnetic spraying device which comprises an inert gas source and an electromagnetic spraying mechanism, wherein the outlet end of the inert gas source is connected with the gas inlet of the electromagnetic spraying mechanism; the electromagnetic spraying mechanism comprises a coating tank, a plurality of stages of electromagnetic acceleration mechanisms, a spray head, an acceleration pipeline and a coating chamber;
the coating tank is used for storing a coating to be sprayed, a discharge hole of the coating tank is connected with a feed hole of the coating chamber, one end of the coating chamber is provided with an air inlet, and the air inlet is connected with an outlet end of an inert gas source; the other end of the coating chamber is provided with a spray port, one end of the spray port is connected with the inlet end of the acceleration pipeline, and the outlet end of the acceleration pipeline is connected with the spray head; the electromagnetic accelerating mechanisms are arranged on the outer side of the accelerating pipeline and are sequentially arranged along the axis of the accelerating pipeline, and the electromagnetic accelerating mechanisms are used for forming a magnetic field environment in the accelerating pipeline.
Further, the coating machine also comprises a flow dispersing mechanism, wherein the flow dispersing mechanism is arranged between the coating chamber and the acceleration pipeline; the flow scattering mechanism comprises a flow scattering disc, the flow scattering disc is arranged between the coating chamber and the accelerating pipeline, and a plurality of flow scattering holes are uniformly formed in the flow scattering disc.
Further, the magnetic field intensity of the electromagnetic accelerating mechanisms of a plurality of stages in the accelerating pipeline is sequentially increased from the inlet end to the outlet end of the accelerating pipeline; in the region of the electromagnetic acceleration mechanism of the adjacent stage, the Lorentz force on the paint particles to be sprayed with paint increases exponentially.
Furthermore, electromagnetic coils are adopted by a plurality of stages of electromagnetic accelerating mechanisms; the electromagnetic coils are sleeved on the outer side of the accelerating pipeline and are uniformly arranged along the axis of the accelerating pipeline in sequence; the number of turns of the electromagnetic coils of the plurality of stages is sequentially increased from the inlet end to the outlet end of the accelerating pipeline.
Furthermore, the plurality of stages of electromagnetic acceleration mechanisms comprise a first stage electromagnetic acceleration mechanism, a second stage electromagnetic acceleration mechanism and a third stage electromagnetic acceleration mechanism; the first-stage electromagnetic accelerating mechanism, the second-stage electromagnetic accelerating mechanism and the third-stage electromagnetic accelerating mechanism are sequentially arranged along the axis direction of the accelerating pipeline and are all arranged on the outer side of the accelerating pipeline.
Furthermore, the shape of the nozzle of the spray head is a rectangular structure.
Further, the coating to be sprayed is a liquid conductive coating or a molten metal coating.
Further, the system also comprises a master control center; the main control center is respectively connected with each stage of electromagnetic accelerating mechanism through a coil controller; an electromagnetic valve is arranged at the air inlet of the coating chamber and is connected with a main control center.
Further, the coating tank is made of high-temperature resistant materials; the coating tank is provided with a feeding port, and the main material port is provided with a manual valve.
The invention also provides a using method of the electromagnetic spraying device, which comprises the following steps:
introducing inert gas into the spraying chamber, and blowing the coating to be sprayed into the accelerating pipeline by using the inert gas;
and sequentially starting a plurality of stages of electromagnetic accelerating mechanisms to accelerate the flow of coating particles of the coating to be sprayed from the inlet end to the outlet end of the accelerating pipeline under the action of a magnetic field, and spraying the coating particles on the surface of the matrix through a spray head to finish the electromagnetic spraying process.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides an electromagnetic spraying device and a using method thereof.A spraying chamber is connected with an inert gas source, and a coating to be sprayed is blown into an accelerating pipeline under the action of the inert gas; the coating particles flow from the inlet end to the outlet end of the accelerating pipeline in an accelerating way under the action of a magnetic field and are sprayed out through a spray head; the coating particles move in the magnetic field to generate induced current, and the induced current is subjected to Lorentz force in the magnetic field, so that the flowing speed of the coating particles in an accelerating pipeline is increased, the coating particles are driven to be sprayed at a high speed, coating waste and environmental pollution are avoided, the bonding strength of the coating and a substrate is effectively improved, and the device is simple in structure and low in cost.
Furthermore, a flow dispersing mechanism is arranged between the coating chamber and the accelerating pipeline, and flow dispersing holes are formed in the flow dispersing mechanism, so that the coating to be sprayed can be uniformly dispersed into coating particles under the action of inert gas flow, and the coating particles enter the accelerating pipeline at a preset initial speed, and the acceleration and spraying uniformity of the coating particles is ensured.
Furthermore, induced current generated by the movement of the coating particles in the magnetic field is utilized to bear Lorentz force in the magnetic field environment, and the Lorentz force borne by the coating particles to be sprayed in the magnetic field environment formed by the adjacent electromagnetic accelerating mechanisms is exponentially increased, so that the exponential multiplication of the flow speed of the coating particles in the accelerating pipeline is realized, the high-speed spraying of the coating particles is ensured, and the coating waste is avoided.
Furthermore, a plurality of electromagnetic accelerating mechanisms all adopt electromagnetic coils, the number of coaxial turns of adjacent electromagnetic coils and accelerating pipelines is different, the number of turns is sequentially increased, namely when the current with the same magnitude is switched on, the magnetic field intensity is sequentially increased, and the Lorentz force borne by coating particles is exponentially increased.
Furthermore, a magnetic field along the spraying direction is generated by utilizing the three-level electromagnetic acceleration mechanism, and the three-level electromagnetic acceleration mechanism is electrified, so that the paint particles are accelerated for three times by the Lorentz force, and the paint particles are less wasted in a spraying path, have low environmental pollution and are well combined with the surface of the base material.
Furthermore, the spray head is arranged at the outlet end of the accelerating pipeline and is used as an outlet of the high-speed coating, and the shape of the spray opening of the spray head is rectangular, so that the sprayed coating is planar, the spraying area can be effectively increased, and the spraying efficiency is improved.
Furthermore, by arranging a main control center, the main control center is respectively connected with each level of electromagnetic accelerating mechanism through a coil controller, and the on-off of each level of electromagnetic accelerating mechanism and the adjustment of the intensity of the generated magnetic field are realized by utilizing the main control center; the electromagnetic valve is arranged at the air inlet of the coating chamber, the flow rate of inert gas entering the coating chamber can be controlled by the electromagnetic valve, and the periodic acceleration of coating particles is realized by the cooperation and the cooperation of the electromagnetic valve and the coil controller under the control of the main control center.
Furthermore, the coating tank is made of high-temperature resistant materials and is provided with a filling port and a manual valve; the manual valve is opened when the material is injected, and is closed after the material is injected, so that the coating enters the coating chamber under the action of air pressure; meanwhile, the reliability of the device and the smoothness of the flowing of the liquid coating are ensured when the coating is metal in a high-temperature molten state.
The electromagnetic spraying device and the use method thereof utilize the fact that the motion of conductive particles in a magnetic field can generate induction current, the induction current is acted by Lorentz force in the magnetic field, the coating particles are electromagnetically accelerated to enable the spraying speed of the coating particles to reach more than 1000m/s, the spraying quality of a substrate is improved, and the electromagnetic field is adopted to enable the spraying speed to be controllable, namely the spraying quality can be easily controlled.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic view of an overall structure of an electromagnetic coating apparatus in an embodiment;
FIG. 2 is a schematic structural view of an electromagnetic coating mechanism in an embodiment;
FIG. 3 is a schematic structural diagram of an electromagnetic accelerating mechanism in the electromagnetic spray coating apparatus in the embodiment;
FIG. 4 is a schematic perspective view of a nozzle in the electromagnetic coating apparatus in an embodiment;
FIG. 5 is a side view of a nozzle in the electromagnetic spray coating device in the embodiment;
FIG. 6 is a schematic structural view of a flow dispersing mechanism in the electromagnetic spray coating apparatus in the embodiment;
FIG. 7 is a control schematic block diagram of an electromagnetic coating apparatus in an embodiment;
FIG. 8 is a schematic diagram showing the energization sequence of a three-stage accelerating coil in the electromagnetic spray coating apparatus in the embodiment;
FIG. 9 is a schematic view of an electromagnetic acceleration principle in the electromagnetic spray coating apparatus in the embodiment;
fig. 10 is a schematic view of the working principle and method of the electromagnetic spraying device in the embodiment.
The coating machine comprises an electromagnetic valve 1, a coating tank 2, a first-stage electromagnetic accelerating mechanism 3, a second-stage electromagnetic accelerating mechanism 4, a third-stage electromagnetic accelerating mechanism 5, a main control center 6, a spray head 7, an accelerating pipeline 8, a coil controller 9, a ring-shaped support 10, a power line 11, a flow dispersing mechanism 12, a coating chamber 13, a switch 14, a handle 15, an inert gas tank 16 and an air inlet hose 17, wherein the electromagnetic valve is arranged on the coating machine body; 301, a positive electrode of a first-stage accelerating coil, 302, a negative electrode of the first-stage accelerating coil and 303; 401, a positive pole of a second-stage accelerating coil, 402, a negative pole of the second-stage accelerating coil, 403; 501, 502 and 503.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects of the present invention more apparent, the following embodiments further describe the present invention in detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The following detailed description is exemplary in nature and is intended to provide further details of the invention. Unless otherwise defined, all technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention.
The invention provides an electromagnetic spraying device which comprises an inert gas source and an electromagnetic spraying mechanism, wherein the outlet end of the inert gas source is connected with the gas inlet of the electromagnetic spraying mechanism, and the electromagnetic spraying mechanism comprises an electromagnetic valve 1, a coating tank 2, a plurality of stages of electromagnetic accelerating mechanisms, a main control center 6, a spray head 7, an accelerating pipeline 8, a coil controller 9, an annular bracket 10, a flow dispersing mechanism 12 and a coating chamber 13.
The coating tank 2 is used for storing the coating to be sprayed, and a discharge hole of the coating tank 12 is connected with a feed hole of the coating chamber 13; one end of the coating chamber 13 is provided with an air inlet which is connected with the outlet end of an inert gas source through an air inlet hose 17; the electromagnetic valve 1 is arranged at the air inlet of the coating chamber 13, and the electromagnetic valve 1 is used for controlling the flow rate of the inert gas entering the coating chamber 13 by arranging the electromagnetic valve 1 at the air inlet of the coating chamber 13; the other end of the coating chamber 13 is provided with a material spraying opening, one end of the material spraying opening is connected with the inlet end of the accelerating pipeline 8, and the outlet end of the accelerating pipeline 8 is connected with the spray head 7.
The nozzle of the spray head 7 is rectangular, the spray head 7 is used as an outlet of the high-speed coating, and the nozzle is rectangular, so that the sprayed coating is planar, the spraying area can be effectively increased, and the spraying efficiency is improved; the plurality of stages of electromagnetic accelerating mechanisms are all arranged on the outer side of the accelerating pipeline 8 and are sequentially and uniformly arranged along the axis of the accelerating pipeline 8, and the electromagnetic accelerating mechanisms are used for forming a magnetic field environment in the accelerating pipeline 8.
In the invention, the magnetic field intensity of a plurality of stages of electromagnetic accelerating mechanisms in the accelerating pipeline 8 is increased in sequence from the inlet end to the outlet end of the accelerating pipeline 8; electromagnetic coils are adopted in the plurality of stages of electromagnetic accelerating mechanisms; the electromagnetic coils are sleeved on the outer side of the accelerating pipeline 8 and are sequentially and uniformly arranged along the axis of the accelerating pipeline 8; the number of turns of the plurality of stages of electromagnetic coils is increased in sequence from the inlet end to the outlet end of the accelerating pipeline 8; in the adjacent magnetic field environment, the lorentz force experienced by the paint particles of the paint to be sprayed increases exponentially.
A plurality of annular supports 10 are uniformly arranged at intervals outside the accelerating pipeline 8, the main control center 6 and the coil controller 9 are respectively fixed on the annular supports 10, and the main control center 6 is respectively connected with each stage of electromagnetic accelerating mechanism through the coil controller 9; the electromagnetic valve 1 is connected with a main control center 6; by arranging the main control center 6, the on-off of each level of electromagnetic accelerating mechanism and the adjustment of the intensity of the generated magnetic field are realized by utilizing the main control center 6; the periodic acceleration of the paint particles is realized through the cooperative action of the electromagnetic valve 1 and the coil controller 9.
In the invention, a coating tank 2 is made of high-temperature resistant materials, a filling port is arranged on the coating tank 2, and a manual valve is arranged at a main material port; the coating tank 2 is made of high-temperature resistant materials and is provided with a filling port and a manual valve; the manual valve is opened when the material is injected, and is closed after the material is injected, so that the coating enters the coating chamber 13 under the air pressure action of inert gas; the coating to be sprayed is a liquid conductive coating or a molten metal coating, so that the reliability of the device and the smoothness of the flow of the liquid coating can be ensured when the coating is a metal in a high-temperature molten state.
The flow scattering mechanism 12 is arranged between the coating chamber 13 and the accelerating pipeline 8, the flow scattering mechanism 12 comprises a flow scattering disc, the flow scattering disc is arranged between the coating chamber 3 and the accelerating pipeline 8, and a plurality of flow scattering holes are uniformly arranged on the flow scattering disc; by arranging the flow dispersing mechanism 12 between the paint chamber 13 and the accelerating pipeline 8 and arranging the flow dispersing holes in the flow dispersing mechanism 12, the paint to be sprayed can be dispersed into paint particles under the action of the inert gas flow and enters the accelerating pipeline 8 at a preset initial speed, so that the acceleration of the paint particles and the uniformity of the spraying are ensured.
The invention also provides a using method of the electromagnetic spraying device, which comprises the following steps:
introducing inert gas into the spraying chamber 13, and blowing the coating to be sprayed into the accelerating pipeline 8 by using the inert gas;
and sequentially starting a plurality of stages of electromagnetic accelerating mechanisms to accelerate the flow of coating particles of the coating to be sprayed from the inlet end to the outlet end of the accelerating pipeline 8 under the action of a magnetic field, and spraying the coating particles on the surface of the matrix through a spray head to finish the electromagnetic spraying process.
Examples
As shown in fig. 1 to 7, the present embodiment provides an electromagnetic spraying device, which includes an electromagnetic valve 1, a paint tank 2, a first-stage electromagnetic acceleration mechanism 3, a second-stage electromagnetic acceleration mechanism 4, a third-stage electromagnetic acceleration mechanism 5, a main control center 6, a spray head 7, an acceleration pipe 8, a coil controller 9, a ring-shaped support 10, a power line 11, a flow dispersing mechanism 12, a paint chamber 13, a switch 14, a handle 15, an inert gas tank 16, and an air inlet hose 17.
The electromagnetic valve 1 and the coil controller 9 are respectively connected to the main control center 6 in a communication mode, and the first-stage electromagnetic accelerating mechanism 3, the second-stage electromagnetic accelerating mechanism 4 and the third-stage electromagnetic accelerating mechanism 5 are respectively connected to the coil controller 9 in a communication mode; an inert gas tank 16 for storing an inert gas, the inert gas tank 16 being connected to an air inlet of the paint chamber 13 through an air inlet hose 17; the electromagnetic valve 1 is arranged at the air inlet of the coating chamber 13, the electromagnetic valve 1 is connected with the main control center 6 through a data line, and the opening degree of the electromagnetic valve 1 is controlled by the main control center 6; a feed inlet is arranged at the top of the coating chamber 13, and the coating tank 2 is arranged above the coating chamber 13; the coating tank 2 is used for storing the coating to be sprayed, a discharge hole is formed in the bottom of the coating tank 2, the discharge hole of the coating tank 2 is connected with a feed hole of a coating chamber 13, and the coating chamber 13 is a position for blowing off the coating by inert gas flow.
The coating tank 2 is made of high-temperature-resistant materials, the upper end of the coating tank 2 is provided with a material filling port, and a manual valve is mounted at the material filling port and has a good sealing effect; the manual valve is opened when the material is injected, and closed after the material is injected, and the paint enters the paint chamber under the action of the air pressure of the inert gas; the coating tank 2 is a constant temperature tank, and ensures the reliability of the device and the smoothness of the flowing of the liquid coating when the coating is metal in a high-temperature molten state.
A material spraying port is arranged on the coating chamber 13 and is opposite to the air inlet; the material spraying port is connected with the inlet end of the accelerating pipeline 8, and the outlet end of the accelerating pipeline 8 is connected with the spray head 7; the first-stage electromagnetic accelerating mechanism 3, the second-stage electromagnetic accelerating mechanism 4 and the third-stage electromagnetic accelerating mechanism 5 are all arranged on the outer side of the accelerating pipeline 8 and are sequentially arranged along the axis of the accelerating pipeline 8, and the first-stage electromagnetic accelerating mechanism 3, the second-stage electromagnetic accelerating mechanism 4 and the third-stage electromagnetic accelerating mechanism 5 are respectively used for forming a magnetic field environment in the accelerating pipeline 8.
A plurality of annular supports 10 are uniformly arranged on the outer side of the accelerating pipeline 8, the main control center 6 is fixedly arranged above the accelerating pipeline 8 through the annular supports 10, and the coil controller 9 is fixedly arranged below the accelerating pipeline 8 through the annular supports 10; the main control center 6 is a control center of the whole spraying device, the main control center 6 is connected with a power supply through a power line 11, the power supply is used for supplying power, the power supply adopts a 220V household power grid for supplying power, and the spraying device has good operability and convenience. In this embodiment, the main control center 6 is a brain of the whole spraying device, is connected with a household power grid through a power line 11 to supply power to the main control center 6, is installed on the annular support 10, mainly controls the opening degree of the electromagnetic valve 1, and controls the electrifying sequence of the first-stage electromagnetic acceleration mechanism 3, the second-stage electromagnetic acceleration mechanism 4 and the third-stage electromagnetic acceleration mechanism 5 through the control coil controller 9.
The handle 15 is arranged below the spraying chamber 13, and the switch 14 is positioned above the handle 15; the switch 14 is in communication connection with the main control center 6, the switch 14 is broken by the fingers of an operator to send switch control information to the main control center 6, and the main control center 6 respectively sends instructions to the electromagnetic valve 1 and the coil controller 9 after receiving the switch control signal to control the opening of the electromagnetic valve 1 and the electrifying sequence of the electromagnetic acceleration mechanism, so that the periodic three-stage acceleration of the coating particles is realized; preferably, the electromagnetic valve 1 controls the flow rate of the inert gas into the paint chamber 13 through the air inlet hose 17, and is installed at the air inlet of the paint chamber 13.
The spray head 7 is arranged at the outlet end of the accelerating pipeline 8, and the shape of a spray opening for spraying is a rectangular structure, so that the coating sprayed at high speed is planar, the spraying area can be effectively increased, and the spraying efficiency is improved; the spray head 7 serves as an outlet for the high-speed dope and is made of a wear-resistant material.
The flow dispersing mechanism 12 is arranged between the coating material chamber 3 and the accelerating pipeline 8; the flow scattering mechanism 12 comprises a flow scattering disc, the flow scattering disc is arranged between the coating chamber 3 and the accelerating pipeline 8, a plurality of flow scattering holes are uniformly arranged on the flow scattering disc, and after being blown by inert gas flow, the spraying material is changed into coating particles through the flow scattering holes and enters an electromagnetic accelerating area at a certain initial speed; the dispersion holes mainly function to disperse the paint supplied from the inert gas flow into paint particles, and enter the acceleration duct 8 at an initial velocity.
The first-stage electromagnetic accelerating mechanism 3 comprises a first-stage accelerating coil 302, wherein the first-stage accelerating coil 302 is uniformly wound on the outer side of the accelerating pipeline 8 and is arranged close to one side of the inlet end of the accelerating pipeline 8; one end of the first-stage accelerating coil 302 is a first-stage accelerating coil anode 301, the other end is a first-stage accelerating coil cathode 303, and the first-stage accelerating coil anode 301 and the first-stage accelerating coil cathode 303 are respectively connected with the coil controller 9.
The second-stage electromagnetic accelerating mechanism 4 comprises a second-stage accelerating coil 402, wherein the second-stage accelerating coil 402 is uniformly wound on the outer side of the accelerating pipeline 8 and is positioned in the middle of the accelerating pipeline 8; one end of the second-stage acceleration coil 402 is a second-stage acceleration coil anode 401, the other end is a second-stage acceleration coil cathode 403, and the second-stage acceleration coil anode 401 and the second-stage acceleration coil cathode 303 are respectively connected to the coil controller 9.
The third-stage electromagnetic acceleration mechanism 5 comprises a third-stage acceleration coil 502, and the third-stage acceleration coil 502 is uniformly wound on the outer side of the acceleration pipeline 8 and is arranged close to one side of the outlet end of the acceleration pipeline 8; one end of the third-stage acceleration coil 502 is a third-stage acceleration coil anode 501, the other end is a third-stage acceleration coil cathode 503, and the third-stage acceleration coil anode 501 and the third-stage acceleration coil cathode 503 are respectively connected with the coil controller 9.
The first-stage acceleration coil 302, the second-stage acceleration coil 402 and the third-stage acceleration coil 502 are arranged coaxially with the acceleration pipeline 8, and the number of turns of the first-stage acceleration coil 302, the second-stage acceleration coil 402 and the third-stage acceleration coil 502 is sequentially increased along the direction from the inlet end to the outlet end of the acceleration pipeline 8, namely, when the same current is conducted, the magnetic field intensity formed by the first-stage acceleration coil 302, the second-stage acceleration coil 402 and the third-stage acceleration coil 502 in the acceleration pipeline 8 is sequentially increased, the Lorentz force borne by paint particles is exponentially increased, and the speed of the spray head 7 is enabled to reach more than 1000 m/s.
The coil controller 9 is respectively connected with the first-stage acceleration coil 302, the second-stage acceleration coil 402 and the third-stage acceleration coil 502, and controls the electrifying sequence of each stage of coils through signals of the main control center 6; as shown in fig. 8, in each acceleration period of the present embodiment, in 0 to 0.1s, the first-stage acceleration coil 302 is energized, and the second-stage acceleration coil 402 and the third-stage acceleration coil 502 are not energized; in 0.1-0.2s, the second stage accelerating coil 402 is energized, and the first stage accelerating coil 302 and the third stage accelerating coil 502 are not energized; in 0.2-0.3s, the third stage accelerating coil 502 is energized, and the first stage accelerating coil 302 and the second stage accelerating coil 402 are not energized; namely, after the coating particles reach the corresponding position area of the accelerating coil, the corresponding accelerating coil of the stage is electrified, and the other two stages of coils are not electrified.
In the embodiment, the direction of the current is adjusted by electrifying the three-level acceleration coil, so that the direction of the magnetic field in the acceleration pipeline 8 is consistent with the flowing direction of the paint particles in the acceleration pipeline 8, and the paint particles are accelerated by the Lorentz force; the number of coaxial turns of the adjacent accelerating coil and the accelerating pipeline is different, the number of turns is increased in sequence, namely when the current with the same magnitude is electrified, the magnetic field intensity is increased in sequence, the Lorentz force borne by the paint particles is increased exponentially, and the speed is up to more than 1000m/s quickly.
Principle of operation
As shown in fig. 9, in the present embodiment, each stage of the accelerating coils is periodically energized in turn, and the energizing period is 0.3 s; the following description will be given taking a certain energization period as an example:
the electromagnetic valve 1 is opened for 0.1s, and the liquid conductive coating or the molten metal coating is blown away by the inert gas of 0.1s at the initial speed V0Entering a three-level magnetic field acceleration region in the acceleration pipe 8; then the electromagnetic valve is closed for 0.3s, and within 0.3s of closing the electromagnetic valve 1, when the coating particles enter the first-stage electromagnetic accelerating mechanism 3, the first-stage accelerating coil 302 is electrified, the other two-stage coils are not electrified, and the electrifying time is 0.1 s; similarly, when the paint particles are in short supply with other levels of electromagnetic accelerating mechanisms, the corresponding accelerating coils are electrified, and other accelerating coils are not electrified; coating particle velocity through three-stage magnetic field acceleration region from V0Accelerating to V, and spraying the V on the substrate in a planar manner from a rectangular outlet on the spray head 7 to finish the whole electromagnetic spraying process.
The using method comprises the following steps:
as shown in fig. 10, when the electromagnetic spraying device of the present embodiment is used to spray a substrate, the specific steps are as follows:
firstly, fixing a substrate, and connecting an inert gas tank and an electromagnetic valve interface by using an air inlet hose; selecting a coating with good conductivity, or selecting a metal coating in a molten state; opening a manual valve on the paint tank, and filling the paint to be sprayed into a paint chamber through a paint tank filling port; the power cord is energized to power the entire device.
The valve of the inert gas tank is opened, and the premise is provided for flushing the inert gas.
An operator holds the handle to break the switch, at the moment, the electromagnetic valve is opened, and inert gas enters the coating chamber; the paint is sucked into the paint chamber, is blown away by the airflow through the flow dispersing holes and is called paint particles, and enters the electromagnetic acceleration area at a preset initial speed.
When the coating particles enter the first-stage electromagnetic acceleration region, the main control center controls the first-stage acceleration coil to be electrified, and the other two stages of electromagnetic coils are not electrified; similarly, when the coating particles enter the second or third stage electromagnetic acceleration region, the stage acceleration coil is electrified, and the other two stages of electromagnetic coils are not electrified; finally, the coating particles are sprayed out from the rectangular outlet of the spray head at high speed and sprayed on the surface of the substrate to form a surface spray coating.
The electromagnetic spraying device and the use method thereof have the advantages of simple structure, low cost, simple operation and the like; the three-level accelerating coil is utilized to generate a magnetic field along the spraying direction, and the three-level accelerating coil is electrified in sequence, so that paint or molten metal paint particles with good conductivity are accelerated three times by Lorentz force, the spraying speed can reach more than 1000m/s, the paint particles are less wasted in a spraying path, the environmental pollution is low, and the paint particles are well combined with the surface of a base material.
According to the invention, the coating particles move in the magnetic field to generate induced current and bear Lorentz force in the magnetic field, and the magnetic field is made to be along the spraying direction by the electrified coil, so that the coating device has a compact structure and is simple to operate compared with the traditional spraying equipment; three-stage electromagnetic acceleration is adopted, so that the speed of the coating particles is exponentially increased, and finally the spraying speed reaches over 1000 m/s; and the waste of the coating in the spraying process is reduced by utilizing the coating in the spraying process, and the high-speed spraying speed is sprayed on the surface of the substrate, so that the bonding strength of the spraying layer and the substrate is higher.
The above-described embodiment is only one of the embodiments that can implement the technical solution of the present invention, and the scope of the present invention is not limited by the embodiment, but includes any variations, substitutions and other embodiments that can be easily conceived by those skilled in the art within the technical scope of the present invention disclosed.
Claims (10)
1. An electromagnetic spraying device is characterized by comprising an inert gas source and an electromagnetic spraying mechanism, wherein the outlet end of the inert gas source is connected with the gas inlet of the electromagnetic spraying mechanism; the electromagnetic spraying mechanism comprises a coating tank (2), a plurality of stages of electromagnetic accelerating mechanisms, a spray head (7), an accelerating pipeline (8) and a coating chamber (13);
the coating tank (2) is used for storing a coating to be sprayed, a discharge hole of the coating tank (2) is connected with a feed inlet of the coating chamber (13), one end of the coating chamber (13) is provided with an air inlet, and the air inlet is connected with an outlet end of an inert gas source; the other end of the coating chamber (13) is provided with a spray opening, one end of the spray opening is connected with the inlet end of the accelerating pipeline (8), and the outlet end of the accelerating pipeline (8) is connected with the spray head (7); the plurality of stages of electromagnetic accelerating mechanisms are arranged on the outer side of the accelerating pipeline (8) and are sequentially arranged along the axis of the accelerating pipeline (8), and the electromagnetic accelerating mechanisms are used for forming a magnetic field environment in the accelerating pipeline (8).
2. An electromagnetic spraying device according to claim 1, characterized by further comprising a dispersion mechanism (12), the dispersion mechanism (12) being disposed between the paint booth (3) and the acceleration duct (8); the flow dispersing mechanism (12) comprises a flow dispersing disc, the flow dispersing disc is arranged between the coating chamber (3) and the accelerating pipeline (8), and a plurality of flow dispersing holes are uniformly formed in the flow dispersing disc.
3. An electromagnetic spraying device according to claim 1, characterized in that the magnetic field strength of several stages of electromagnetic accelerating means in the accelerating tunnel (8) increases in sequence from the inlet end to the outlet end of the accelerating tunnel (8); in the region of the electromagnetic acceleration mechanism of the adjacent stage, the Lorentz force on the paint particles to be sprayed with paint increases exponentially.
4. The electromagnetic spraying device according to claim 1, wherein the electromagnetic accelerating mechanisms of the plurality of stages are electromagnetic coils; the electromagnetic coils are sleeved on the outer side of the accelerating pipeline (8) and are uniformly arranged along the axis of the accelerating pipeline (8) in sequence; the number of turns of the electromagnetic coils of the plurality of stages is increased in sequence from the inlet end to the outlet end of the accelerating pipeline (8).
5. The electromagnetic spraying device according to claim 1, wherein the plurality of stages of electromagnetic accelerating mechanisms comprise a first stage of electromagnetic accelerating mechanism (3), a second stage of electromagnetic accelerating mechanism (4) and a third stage of electromagnetic accelerating mechanism (5); the first-stage electromagnetic accelerating mechanism (3), the second-stage electromagnetic accelerating mechanism (4) and the third-stage electromagnetic accelerating mechanism (5) are sequentially arranged along the axis direction of the accelerating pipeline (8) and are all arranged on the outer side of the accelerating pipeline (8).
6. An electromagnetic spraying device according to claim 1, characterized in that the shape of the orifice of the spray head (7) is a rectangular structure.
7. An electromagnetic spraying device according to claim 1, wherein the coating to be sprayed is a liquid conductive coating or a molten metal coating.
8. An electromagnetic spraying device according to claim 1, characterized by further comprising a main control center (6); the master control center (6) is respectively connected with each stage of electromagnetic accelerating mechanism through a coil controller (9); an electromagnetic valve (1) is arranged at the air inlet of the coating chamber (13), and the electromagnetic valve (1) is connected with a main control center (6).
9. An electromagnetic spraying device according to claim 1, characterized in that the paint can (2) is made of a high temperature resistant material; the coating tank (2) is provided with a feed inlet, and a manual valve is arranged at the main material inlet.
10. The method of using an electromagnetic spraying device according to any one of claims 1 to 9, comprising the steps of:
introducing inert gas into the spraying chamber, and blowing the coating to be sprayed into the accelerating pipeline by using the inert gas;
and sequentially starting a plurality of stages of electromagnetic accelerating mechanisms to accelerate the flow of coating particles of the coating to be sprayed from the inlet end to the outlet end of the accelerating pipeline under the action of a magnetic field, and spraying the coating particles on the surface of the matrix through a spray head to finish the electromagnetic spraying process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110567935.8A CN113289827A (en) | 2021-05-24 | 2021-05-24 | Electromagnetic spraying device and using method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110567935.8A CN113289827A (en) | 2021-05-24 | 2021-05-24 | Electromagnetic spraying device and using method thereof |
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| CN113289827A true CN113289827A (en) | 2021-08-24 |
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| CN202110567935.8A Pending CN113289827A (en) | 2021-05-24 | 2021-05-24 | Electromagnetic spraying device and using method thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1015734A (en) * | 1963-04-29 | 1966-01-05 | Commissariat Energie Atomique | Method of, and apparatus for, accelerating ionized gas |
| JPH01313896A (en) * | 1988-06-13 | 1989-12-19 | Mitsubishi Heavy Ind Ltd | Thermal spraying device |
| JP2002069603A (en) * | 2000-09-01 | 2002-03-08 | National Institute Of Advanced Industrial & Technology | Method and apparatus for thermally spraying using electro-magnetically accelerated plasma |
| CN112090653A (en) * | 2020-09-17 | 2020-12-18 | 冯娟 | Electromagnetic acceleration-based paint spray gun |
| CN112718290A (en) * | 2020-12-15 | 2021-04-30 | 中国人民解放军空军工程大学 | Electron beam assisted vacuum electric scanning supersonic speed deposition spray gun |
-
2021
- 2021-05-24 CN CN202110567935.8A patent/CN113289827A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1015734A (en) * | 1963-04-29 | 1966-01-05 | Commissariat Energie Atomique | Method of, and apparatus for, accelerating ionized gas |
| JPH01313896A (en) * | 1988-06-13 | 1989-12-19 | Mitsubishi Heavy Ind Ltd | Thermal spraying device |
| JP2002069603A (en) * | 2000-09-01 | 2002-03-08 | National Institute Of Advanced Industrial & Technology | Method and apparatus for thermally spraying using electro-magnetically accelerated plasma |
| CN112090653A (en) * | 2020-09-17 | 2020-12-18 | 冯娟 | Electromagnetic acceleration-based paint spray gun |
| CN112718290A (en) * | 2020-12-15 | 2021-04-30 | 中国人民解放军空军工程大学 | Electron beam assisted vacuum electric scanning supersonic speed deposition spray gun |
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| 高世桥等: "《微纳机电系统力学》", 30 September 2018, 北京理工大学出版社 * |
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Application publication date: 20210824 |