Salt spray test device

Abstract

The invention discloses a salt spray test device, which comprises a salt spray test box and an atomization device, the salt spray test box comprises a box body and a sample support frame, the box body is provided with a salt spray jet orifice, the sample support frame is provided with a sample installation position for accommodating a sample, and the sample support frame is installed in the box body of the box body. The atomization device comprises a shell, an ultrasonic atomization piece and an ultrasonic atomizer, the ultrasonic atomization piece and the ultrasonic atomizer are both installed in the shell, the ultrasonic atomization piece is installed in the ultrasonic atomizer, and the shell is provided with an atomization channel communicating with the box body and an inner cavity of the shell. In the salt spray test device provided by the invention, the atomization device adopts the ultrasonic atomizer and the ultrasonic atomization sheet to generate ultrasonic waves to atomize the salt solution, so that compared with a compressed air atomization method required by a traditional atomization device, dangerous sources are reduced, and compressed air does not need to be preheated by a saturation tower. Therefore, the use safety of the salt spray test device provided by the invention is improved.

Description

Technical Field

[0001] The invention relates to the technical field of salt spray testing, in particular to a salt spray testing device. Background Art

[0002] The salt spray test device is a high-speed airflow generated by high-speed injection of purified, preheated and depressurized compressed air from the nozzle, forming a negative pressure above the salt solution supply pipe. The salt solution rises to the nozzle along the salt solution supply pipe under the action of atmospheric pressure, is atomized by the high-speed airflow and sprayed to the conical mist distributor at the top of the spray pipe, and then floats out from the spray port, diffuses into the test room, and finally evenly lands on the sample. By forming a uniform salt spray atmosphere, the corrosion process is accelerated to quickly verify the corrosion resistance of metal materials and coverings.

[0003] However, the generation of salt spray requires compressed air, which requires the configuration of a compressed air production system such as a screw air compressor, and a saturation tower is required to preheat the compressed air, resulting in lower safety in the use of the salt spray test device.

[0004] Therefore, how to improve the safety of the use of salt spray test equipment is a technical problem that needs to be solved urgently by those skilled in the art. Summary of the invention

[0005] The purpose of the present invention is to provide a salt spray test device, which has improved use safety.

[0006] The salt spray test device provided in this application includes:

[0007] A salt spray test box, the salt spray test box comprising a box body and a sample support frame, the box body is provided with a salt spray injection port, the sample support frame is provided with a sample installation position for accommodating the sample, and the sample support frame is installed in the box body;

[0008] The atomization device comprises a shell, an ultrasonic atomization sheet and an ultrasonic atomizer. The ultrasonic atomization sheet and the ultrasonic atomizer are both installed in the shell, the ultrasonic atomization sheet is installed on the ultrasonic atomizer, and the shell is provided with an atomization channel connecting the box body and the inner cavity of the shell.

[0009] Optionally, in the above-mentioned salt spray test device, the atomization device further comprises:

[0010] a first salt solution tank, wherein the first salt solution tank contains a salt solution of a first concentration value, and the first salt solution tank is installed in the housing;

[0011] a second saline solution tank, wherein the second saline solution tank contains a saline solution of a second concentration value, the first concentration value is less than the second concentration value, the second saline solution tank is installed in the housing, the first saline solution tank and the second saline solution tank are respectively installed with the ultrasonic atomizer, each of the ultrasonic atomizers is provided with the ultrasonic atomizing sheet; the first saline solution tank and the second saline solution tank are both in communication with the atomization channel;

[0012] An air inlet channel is arranged on the shell, and an air inlet of the air inlet channel is arranged on the shell, and an air inlet end of the atomization channel is connected to the air inlet channel; from the air inlet to the outlet direction of the atomization channel, the first salt solution tank is located downstream of the second salt solution tank.

[0013] Optionally, in the above-mentioned salt spray test device, the atomization device further comprises:

[0014] A corrosion-resistant fan, wherein the corrosion-resistant fan is installed in the air inlet passage;

[0015] a second heating module, the second heating module is used to heat the gas in the air inlet channel, and along the air flow direction in the air inlet channel, the second heating module is located downstream of the corrosion-resistant fan,

[0016] A temperature sensor, the temperature sensor is used to sense the temperature of the gas in the air intake passage, and along the air flow direction in the air intake passage, the temperature sensor is located downstream of the second heating module;

[0017] The first control module, the temperature sensor, the corrosion-resistant fan, the ultrasonic atomization sheet, the ultrasonic atomizer and the second heating module are all connected to the first control module by signal.

[0018] Optionally, in the above-mentioned salt spray test device, the atomization device also includes a float liquid level controller, and the float liquid level controller is installed in the first salt solution tank.

[0019] Optionally, in the above-mentioned salt spray test device, the atomization channel is a V-shaped channel, the first salt solution tank and the second salt solution tank are located at the bottom end of the atomization channel, and the first salt solution tank and the second salt solution tank are located below the atomization channel.

[0020] Optionally, in the above-mentioned salt spray test device, the atomization channel is plug-connected with the salt spray injection port, and the outer periphery of the atomization channel is sleeved with one or at least two elastic sealing rings, and the outer periphery of the elastic sealing ring is abutted and sealed with the salt spray injection port.

[0021] Optionally, in the above-mentioned salt spray test device, the salt spray nozzle is arranged on the side wall of the box body; along the horizontal direction, the salt spray test box and the atomization device are arranged in sequence.

[0022] Optionally, in the above-mentioned salt spray test device, a second control module is further included, and the ultrasonic atomization sheet arranged on each of the ultrasonic atomizers is arranged in parallel, and the ultrasonic atomizer and the ultrasonic atomization sheet are both signal-connected to the second control module.

[0023] Optionally, in the above-mentioned salt spray test device, the salt spray test box further includes:

[0024] A first heating module, wherein the first heating module is installed at the bottom of the box body;

[0025] Salinometer;

[0026] A first salt mist collector, wherein the first salt mist collector is installed in the box, and the salinometer is installed in the first salt mist collector;

[0027] A drain valve, the drain valve being installed at the bottom end of the first salt mist collector;

[0028] A second salt mist collector is installed in the box, and the second salt mist collector is provided with a measuring cylinder for measuring the amount of salt mist deposition.

[0029] Optionally, in the above-mentioned salt spray test device, the top of the box body is blocked by a box cover, and the box cover is a conical cover body with a high middle and a low end. The box cover is made of transparent organic glass, and the top of the box cover is provided with a guide block for guiding the salt spray airflow to opposite sides.

[0030] In the above technical scheme, the salt spray test device provided by the present invention includes a salt spray test box and an atomization device, the salt spray test box includes a box body and a sample support frame, the box body is provided with a salt spray injection port, the sample support frame is provided with a sample installation position for accommodating the sample, and the sample support frame is installed in the box body of the box body. The atomization device includes a shell, an ultrasonic atomization sheet and an ultrasonic atomizer, the ultrasonic atomization sheet and the ultrasonic atomizer are both installed in the shell, the ultrasonic atomization sheet is installed in the ultrasonic atomizer, and the shell is provided with an atomization channel connecting the box body and the inner cavity of the shell.

[0031] From the above description, it can be seen that in the salt spray test device provided by the present application, the atomization device uses an ultrasonic atomizer and an ultrasonic atomization sheet to generate ultrasonic waves to atomize the salt solution. Compared with the compressed air atomization method required by the traditional atomization device, there is no need for a compressed air generation system, which simplifies the system configuration, reduces the source of danger, and does not require a saturation tower to preheat the compressed air. Therefore, the use safety of the salt spray test device provided by the present application is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0033] Figure 1 A schematic diagram of the structure of a salt spray test chamber provided in an embodiment of the present invention;

[0034] Figure 2 A schematic diagram of the structure of an atomization device provided in an embodiment of the present invention;

[0035] Figure 3 A schematic diagram of the layout of an ultrasonic atomizer provided in an embodiment of the present invention;

[0036] Figure 4 This is an appearance diagram of the salt spray test device provided by an embodiment of the present invention;

[0037] Figure 5 Schematic diagram of airflow blowing toward the guide block provided in an embodiment of the present invention.

[0038] in Figure 1-5 In: 1-first heating module, 2-second salt spray collector, 3-sample support frame, 4-sample, 5-salt solution storage box, 6-salt spray nozzle, 7-box cover, 8-guide block, 9-electrical cabinet, 10-control console, 11-first salt spray collector, 12-salinity meter, 13-drain valve, 14-first salt solution tank, 15-float level controller, 16-atomization channel, 17-housing, 18-elastic sealing ring, 19-temperature sensor, 20-second heating module, 21-corrosion-resistant fan, 22-second salt solution tank, 23-ultrasonic atomization sheet, 24-ultrasonic atomizer, 25-salt spray test box, 26-atomization device. DETAILED DESCRIPTION

[0039] The core of the invention is to provide a salt spray test device, which has improved use safety.

[0040] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and implementation modes.

[0041] Please refer to Figures 1 to 5 .

[0042] In a specific embodiment, the salt spray test device provided in the specific embodiment of the present invention includes a salt spray test box 25 and an atomizing device 26, wherein the atomizing device 26 is used to deliver atomized salt spray to the salt spray test box 25. Figure 1 As shown, the salt spray test box 25 includes a box body and a sample support frame 3, and the box body is provided with a salt spray nozzle 6. The sample support frame 3 is installed in the box body of the box body. The sample support frame 3 is installed in the middle position of the inner cavity of the box body, and the sample support frame 3 is connected to the side wall of the box body.

[0043] Specifically, the salt spray test device further includes a salt solution storage tank 5 , which is used to provide salt solution to the atomization device 26 .

[0044] The sample support frame 3 is provided with a sample installation position for accommodating the sample 4, and one sample installation position can be provided on the sample support frame 3. In order to improve efficiency, preferably, the sample support frame 3 is provided with multiple sample installation positions, and each sample installation position can be placed on the sample 4. Preferably, the sample installation positions are arranged in sequence with equal intervals along the length direction of the sample support frame 3.

[0045] The atomizing device 26 includes a housing 17, an ultrasonic atomizing sheet 23 and an ultrasonic atomizer 24. The ultrasonic atomizing sheet 23 and the ultrasonic atomizer 24 are both installed in the housing 17, and the ultrasonic atomizing sheet 23 is installed in the ultrasonic atomizer 24. Specifically, one ultrasonic atomizing sheet 23 may be installed on the ultrasonic atomizer 24, or a plurality of ultrasonic atomizing sheets 23 may be installed on the ultrasonic atomizer 24. The ultrasonic atomizing sheets 23 installed on the same ultrasonic atomizer 24 may be connected in series, or the ultrasonic atomizing sheets 23 installed on the same ultrasonic atomizer 24 may be connected in parallel, so as to control the operation of each ultrasonic atomizing sheet 23 individually.

[0046] The housing 17 is provided with an atomization channel 16 communicating with the box body and the inner cavity of the housing 17 . Specifically, the atomization channel 16 may be a straight channel or a curved channel.

[0047] When the ultrasonic atomizer 24 is used to atomize the salt solution: the high-frequency oscillation of electrons generates ultrasonic waves, which form surface tension waves when propagating on the surface of the salt solution. The particles of the liquid medium perform periodic motion in a direction perpendicular to the propagation direction, and the amplitude of the particles increases with the increase of the sound intensity. When the amplitude reaches a critical value, the particles break away from the wave crest to form salt mist.

[0048] It can be seen from the above description that in the salt spray test device provided in the specific embodiment of the present application, the atomization device 26 uses an ultrasonic atomizer 24 and an ultrasonic atomization sheet 23 to generate ultrasonic waves to atomize the salt solution. Compared with the traditional atomization device 26 which requires compressed air atomization, there is no need for a compressed air generation system, which simplifies the system configuration, reduces the source of danger, and does not require a saturation tower to preheat the compressed air. Therefore, the use safety of the salt spray test device provided by the present application is improved.

[0049] In a specific embodiment, the atomization device 26 may be provided with one or at least two salt solution tanks. Specifically, when multiple salt solution tanks are provided, the salt solution concentrations of the salt solution tanks may be the same or different.

[0050] In a specific embodiment, the atomizing device 26 includes two salt solution tanks, specifically, a first salt solution tank 14 and a second salt solution tank 22. The first salt solution tank 14 contains a salt solution of a first concentration value. The second salt solution tank 22 contains a salt solution of a second concentration value, and the first concentration value is less than the second concentration value. The first salt solution tank 14 and the second salt solution tank 22 are both installed in the housing 17.

[0051] Ultrasonic atomizers 24 are installed in the first salt solution tank 14 and the second salt solution tank 22 respectively, and each ultrasonic atomizer 24 is provided with an ultrasonic atomizing sheet 23. The first salt solution tank 14 and the second salt solution tank 22 are both connected to the atomizing channel 16.

[0052] From the air inlet to the outlet direction of the atomizing channel 16, the first salt solution tank 14 is located upstream of the second salt solution tank 22. In order to prevent the salt mist in the second salt solution tank 22 from interfering with the second salt mist solution tank which is only in operation. Preferably, as Figure 2 As shown, in the direction from the air inlet to the outlet of the atomizing channel 16 , the atomizing first salt solution tank 14 is located downstream of the second salt solution tank 22 .

[0053] In a specific embodiment, the atomizing device 26 further includes an air inlet channel, which is disposed on the housing 17. Preferably, the air inlet channel is disposed in the inner cavity of the housing 17. The air inlet of the air inlet channel is disposed on the housing 17, and the air inlet end of the atomizing channel 16 is connected to the air inlet channel. The air inlet of the air inlet channel may be disposed at the top, side or bottom of the housing 17. External air enters the air inlet channel through the air inlet, and then enters the atomizing channel 16 and then enters the box.

[0054] In a specific embodiment, the atomizing device 26 further includes a fan, which is installed in the air inlet passage. Considering the situation where the salt solution is overlooked, preferably, the fan is a corrosion-resistant fan 21, which is installed in the air inlet passage to extend the service life of the fan. Specifically, the fan can be installed at the air inlet of the air inlet passage, and the fan is installed in the inner cavity of the housing 17.

[0055] In a specific embodiment, the atomizing device 26 further includes a second heating module 20, which is used to heat the gas in the air inlet passage. The second heating module 20 may be an electric heating sheet or an electric heating wire wound around the outer periphery of the air inlet passage. Along the airflow direction in the air inlet passage, the second heating module 20 is located downstream of the corrosion-resistant fan 21.

[0056] In a specific embodiment, the atomizing device 26 further includes a temperature sensor 19, which is used to sense the gas temperature in the air intake passage. Along the airflow direction in the air intake passage, the temperature sensor 19 is located downstream of the second heating module 20. Specifically, the temperature sensor 19 can be connected to a temperature display, and by reading the temperature of the temperature display, it is determined whether the second heating module 20 is turned on. For example, when the air temperature at the position of the temperature sensor 19 is lower than the preset temperature, the second heating module 20 is turned on. When the air temperature at the position of the temperature sensor 19 is higher than the preset temperature, the second heating module 20 is in a closed state.

[0057] In a specific embodiment, the atomizing device 26 also includes a first control module, and the temperature sensor 19, the corrosion-resistant fan 21, the ultrasonic atomizer 24 and the second heating module 20 are all connected to the first control module signal. When in specific use, the first control module controls the fan opening and closing, the ultrasonic atomizer 24 and the ultrasonic atomizing sheet 23 work. At the same time, the second heating module 20 is opened and closed according to the temperature value of the received temperature sensor 19. Specifically, the first control module uses a PLC controller to accurately control the temperature in the box according to the analog voltage signal converted from the temperature sensor 19 100mm away from the wall of the shell 17 in the arrangement box. During specific operation, the temperature sensor 19 monitors the ambient temperature in real time, converts the temperature signal into an electrical signal, processes the signal to obtain the corresponding temperature value, and then controls whether the second heating module 20 is working through the first control module. When it works, the gas temperature rises. When it is not working, the outside cold air enters the atomizing channel 16 to cool the atomized medium. Specifically, the temperature sensor 19 can also be arranged in the inner cavity of the shell 17.

[0058] In a specific working mode, the fresh air entering the atomizer air inlet channel is preheated by a ring-shaped electric heating tube in the air inlet channel, and then enters the atomization channel 16 to be evenly mixed with the salt mist generated by the ultrasonic atomizer 24. The corrosion-resistant fan 21 pushes the air mixed with the salt mist along the atomization channel 16 to the nozzle arranged to spray out to form a uniform and continuous salt mist.

[0059] When the atomizing device 26 is working, the ultrasonic atomizing sheet 23 generates ultrasonic waves to atomize the salt solution, and the fresh air is preheated by the second heating module 20 in the air intake duct, and is sent into the housing 17 by the corrosion-resistant fan 21 to mix with the salt mist. The mixed air is pushed along the atomizing channel 16 to the nozzle arranged on the side wall of the box to form a uniform and continuous salt mist.

[0060] Specifically, a guide plate is provided in the atomization channel 16 to allow the gas to flow along a preset path.

[0061] In a specific embodiment, the atomizing device 26 further includes a float liquid level controller 15 , which is installed in the first salt solution tank 14 , and the float liquid level controller 15 controls the solution in the first salt solution tank 14 to be within a preset range.

[0062] In a specific embodiment, in order to facilitate the mixing of salt mist and gas, the atomization channel 16 is a V-shaped channel, the first salt solution tank 14 and the second salt solution tank 22 are located at the bottom of the atomization channel 16, and the first salt solution tank 14 and the second salt solution tank 22 are located below the atomization channel 16. Specifically, the concentration of the first salt solution tank 14 is slightly lower than the specified requirements, for example, the concentration of the first salt solution tank 14 is 90%-95% of the specified requirements. The salt concentration of the second salt solution tank 22 is twice the specified concentration, that is, the first salt solution tank 14 is used as the main salt solution tank, and the second salt solution tank 22 is used as the secondary salt solution tank. Specifically, the concentration of the salt mist settled in the salt spray test box 25 is accurately controlled by controlling the opening number of the ultrasonic atomization sheets 23 corresponding to the first salt solution tank 14 and the second salt solution tank 22. Specifically, the atomization device 26 is controlled by the first control module.

[0063] In a specific embodiment, the atomizing channel 16 is plug-connected with the salt spray nozzle 6, and one or at least two elastic sealing rings 18 are sleeved on the outer periphery of the atomizing channel 16, and the outer periphery of the elastic sealing ring 18 is abutted and sealed with the salt spray nozzle 6. Specifically, the air outlet of the atomizing channel 16 is located inside the box, and the two elastic sealing rings 18 are respectively attached to the inner wall and the outer wall of the box. Specifically, the elastic sealing ring 18 can be a flexible PVC structure. By plugging in, the salt spray test box 25 and the atomizing device 26 are quickly connected and sealed.

[0064] In a specific embodiment, the salt spray nozzle 6 is arranged on the side wall of the box. In the horizontal direction, the salt spray test box 25 and the atomization device 26 are arranged in sequence. The salt spray nozzle 6 of the present application is arranged on the side wall of the box, and the number of samples 4 placed in the box is increased. For example, a sample 4 with a width twice that of the prior art can be placed in a box of the same specification.

[0065] In a specific embodiment, the salt spray test box 25 further includes a salt spray collector and a salinity meter 12. The salt spray collector is installed in the box, and the salinity meter 12 is installed in the salt spray collector. The salinity meter 12 is used to measure the salinity.

[0066] In a specific embodiment, the salt spray test device also includes a second control module, and the ultrasonic atomizer 23 provided on each ultrasonic atomizer 24 is arranged in parallel, and the ultrasonic atomizer 24 and the ultrasonic atomizer 23 are both connected to the second control module signal. The present application controls the amount of salt spray generated by opening multiple groups of parallel ultrasonic atomizers 23, thereby realizing accurate control of the amount of salt spray deposition required for the test. During specific control, the second control module is connected to the salinometer 12, and the salinity electrical signal measured by the salinometer 12 is transmitted to the second controller. The second control module coordinates the salt concentration and salt spray deposition of the first salt solution tank 14 with a low salt solution concentration and the second salt solution tank 22 with a high salt solution concentration of multiple groups of parallel ultrasonic atomizers 23 according to the real-time monitoring signal of the salinometer 12. Specifically, when the amount of salt spray deposition is low, the number of ultrasonic atomizers 23 working on the second salt solution tank 22 is increased, and the number of ultrasonic atomizers 23 working on the first salt solution tank 14 can also be reduced at the same time. When the salt mist deposition increases, the number of ultrasonic atomization sheets 23 working on the first salt solution tank 14 is increased, and the number of ultrasonic atomization sheets 23 working on the second salt solution tank 22 can also be reduced at the same time.

[0067] Specifically, the first controller and the second controller can be integrated into a control console 10 composed of a PLC control module, and the control console 10 inputs signals through the electrical cabinet 9. Specifically, multiple groups of ultrasonic atomizers 23 are connected in parallel, and each group of ultrasonic atomizers 23 is independently controlled. The salt mist deposition amount required for the test is adjusted by turning on the required number of ultrasonic atomizers 23 on the control panel of the control console 10 to accurately control the salt concentration of the precipitated salt mist in the salt spray test box 25, so that the salt mist deposition amount in the salt spray test box 25 is kept within a specified range.

[0068] In a specific embodiment, the salt spray test box 25 also includes a first heating module 1, which is installed at the bottom of the box inside the box; specifically, the first heating module 1 includes a nickel-chromium alloy heating wire, and the first heating module 1 is arranged at the bottom of the box, so that the temperature of the box rises evenly and the temperature inside the box is uniform under the flow of salt spray airflow.

[0069] In a specific embodiment, the salt spray test box 25 further includes a second salt spray collector 2, which is provided with a measuring cylinder for measuring the amount of salt spray deposition. Through the second salt spray collector 2, after the test, by observing the amount of deposition in the measuring cylinder, it is judged whether the amount of salt spray deposition meets the requirements. Specifically, the second salt spray collector 2 is located at the sample installation position, so that the amount of salt spray deposition measured by the second salt spray collector 2 is consistent with the area of ​​salt spray deposition on the sample 4.

[0070] In a specific embodiment, the salt spray test box 25 also includes a drain valve 13, which is installed at the bottom of the first salt spray collector 11. Specifically, when the first salt spray collector 11 needs to be used, the material in the first salt spray collector 11 is discharged through the drain valve 13. For ease of operation, the drain valve 13 can be an electronic drain valve 13. Specifically, a first salt spray collector 11 of about 160 square centimeters is arranged in the salt spray test box 25 to collect the settled salt spray. After condensation, the collected salt spray is collected and enters the storage tank of the collector of the first salt spray collector 11. The storage tank is installed with a high-precision salinity meter 12 to measure the concentration of the collected salt spray. The collected liquid in the storage tank is controlled by the electronic drain valve 13 to update regularly. For example, after a test is completed, the electronic drain valve 13 is opened in time to discharge the salt spray in the storage tank.

[0071] On the basis of the above schemes, the top of the box body is blocked by a box cover 7. Specifically, the box cover 7 adopts a conical cover structure with a high middle and a low end. The box cover 7 can be an inverted V-shaped structure, that is, a "︿"-shaped structure, to prevent the salt mist from condensing and dripping on the sample 4. The box cover 7 is made of transparent organic glass, which is convenient for observing the working conditions in the box body.

[0072] like Figure 5 As shown, the top of the box cover 7 is provided with a guide block 8 for guiding the salt spray airflow to opposite sides. Specifically, the guide block 8 can be a triangular plate structure with the tip facing upward. The guide block 8 guides the salt spray airflow to make the spray in the salt spray test box 25 uniform.

[0073] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0074] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A salt spray test device, characterized in that: include: A salt spray test box (25), the salt spray test box (25) comprising a box body and a sample support frame (3), the box body being provided with a salt spray injection port (6), the sample support frame (3) being provided with a sample installation position for accommodating a sample (4), and the sample support frame (3) being installed in the box body; An atomizing device (26), the atomizing device (26) comprising a housing (17), an ultrasonic atomizing sheet (23) and an ultrasonic atomizer (24), the ultrasonic atomizing sheet (23) and the ultrasonic atomizer (24) both being installed in the housing (17), the ultrasonic atomizing sheet (23) being installed in the ultrasonic atomizer (24), and the housing (17) being provided with an atomizing channel (16) communicating with the housing and the inner cavity of the housing (17).

2. The salt spray test device according to claim 1, characterized in that: The atomizing device (26) further comprises: a first salt solution tank (14), wherein the first salt solution tank (14) contains a salt solution with a first concentration value, and the first salt solution tank (14) is installed in the housing (17); a second salt solution tank (22), wherein the second salt solution tank (22) contains a salt solution of a second concentration value, wherein the first concentration value is less than the second concentration value, wherein the second salt solution tank (22) is installed in the housing (17), wherein the first salt solution tank (14) and the second salt solution tank (22) are respectively installed with the ultrasonic atomizer (24), and each of the ultrasonic atomizers (24) is provided with the ultrasonic atomizer sheet (23); and the first salt solution tank (14) and the second salt solution tank (22) are both in communication with the atomization channel (16); An air intake channel, wherein the air intake channel is arranged on the housing (17), and an air inlet of the air intake channel is arranged on the housing (17), and an air intake end of the atomizing channel (16) is connected to the air intake channel; from the air inlet to the outlet direction of the atomizing channel (16), the first salt solution tank (14) is located downstream of the second salt solution tank (22).

3. The salt spray test device according to claim 2, characterized in that: The atomizing device (26) further comprises: A corrosion-resistant fan (21), wherein the corrosion-resistant fan (21) is installed in the air inlet passage; a second heating module (20), the second heating module (20) being used to heat the gas in the air inlet channel, and along the air flow direction in the air inlet channel, the second heating module (20) is located downstream of the corrosion-resistant fan (21); a temperature sensor (19), the temperature sensor (19) being used to sense the temperature of the gas in the air intake passage, and the temperature sensor (19) being located downstream of the second heating module (20) along the air flow direction in the air intake passage; The first control module, the temperature sensor (19), the corrosion-resistant fan (21), the ultrasonic atomizing sheet (23), the ultrasonic atomizer (24) and the second heating module (20) are all connected to the first control module by signal.

4. The salt spray test device according to claim 3, characterized in that: The atomizing device (26) further comprises a float liquid level controller (15), wherein the float liquid level controller (15) is installed in the first salt solution tank (14).

5. The salt spray test device according to claim 2, characterized in that: The atomization channel (16) is a V-shaped channel, the first saline solution tank (14) and the second saline solution tank (22) are located at the bottom end of the atomization channel (16), and the first saline solution tank (14) and the second saline solution tank (22) are located below the atomization channel (16).

6. The salt spray test device according to claim 2, characterized in that: The atomizing channel (16) is plug-connected with the salt mist injection port (6); one or at least two elastic sealing rings (18) are sleeved on the outer periphery of the atomizing channel (16); and the outer periphery of the elastic sealing ring (18) is in abutment with the salt mist injection port (6) for sealing.

7. The salt spray test device according to claim 1, characterized in that: The salt spray nozzle (6) is arranged on the side wall of the box body; along the horizontal direction, the salt spray test box (25) and the atomization device (26) are arranged in sequence.

8. The salt spray test device according to claim 1, characterized in that: It also includes a second control module, and the ultrasonic atomization sheet (23) provided on each of the ultrasonic atomizers (24) is provided in parallel, and the ultrasonic atomizer (24) and the ultrasonic atomization sheet (23) are both connected to the second control module by signal.

9. The salt spray test device according to claim 8, characterized in that: The salt spray test chamber (25) further comprises: A first heating module (1), the first heating module (1) being installed at the bottom of the box body; Salinometer (12); A first salt mist collector (11), wherein the first salt mist collector (11) is installed in the box, and the salinometer (12) is installed in the first salt mist collector (11); A drain valve (13), the drain valve (13) being installed at the bottom end of the first salt mist collector (11); A second salt mist collector (2), wherein the second salt mist collector (2) is installed in the box body, and the second salt mist collector (2) is provided with a measuring cylinder for measuring the amount of salt mist deposition.

10. The salt spray test device according to any one of claims 1 to 9, characterized in that: The top of the box body is blocked by a box cover (7), the box cover (7) is a conical cover body with a high middle and low ends, the box cover (7) is made of transparent organic glass, and a guide block (8) is provided at the top of the box cover (7) for guiding the salt mist airflow to opposite sides.

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