Salt-mist-resistant test bed

Abstract

The utility model relates to a salt mist resistance test bed, which comprises a support frame, and a fan sound insulation box, an air supply pipeline, an upstream box body and a downstream box body which are arranged on the support frame and are communicated in sequence, a fan is arranged in the fan sound insulation box, a butterfly valve is arranged on the air supply pipeline, a spraying device for spraying salt mist is arranged in the upstream box body, and the downstream box body is arranged in the upstream box body. An air uniformizing plate is arranged at the connecting position between the air supply pipeline and the upstream box body, a plurality of air uniformizing holes are formed in the surface of the air uniformizing plate at intervals, a supporting assembly located between the upstream box body and the downstream box body is arranged on the supporting frame, and the supporting assembly is used for supporting the air filter. The air filter is placed above the supporting assembly, the draught fan is started, the draught fan generates wind, the butterfly valve controls the conveying wind power of the air supply pipeline, different wind power environments can be conveniently simulated, the spraying device sprays salt mist, the salt mist environment is simulated, and the salt mist resistance of the air filter can be conveniently tested.

Description

Technical Field

[0001] This application relates to the technical field of filter testing, and in particular to a salt spray resistance test bench. Background Technology

[0002] An air filter is a device that uses porous filter materials to capture dust from a gas-solid two-phase flow and purify the gas.

[0003] Currently, air filters are being used in a wider range of environments, and some air filters are being used in harsher environments, especially in coastal areas or areas with high salt spray levels. Salt spray can enter mechanical and electrical equipment in the field under the influence of wind, causing corrosion to the machinery or electrical equipment. It can also adhere to the equipment inside the engine compartment and remain in a humid state for a long time, further aggravating the corrosive effect of humid air.

[0004] For air filters used in high salt spray environments, in order to test the air filter's salt spray resistance, it is necessary to simulate a high salt spray environment and test the air filter's salt spray resistance. Utility Model Content

[0005] To facilitate the testing of the salt spray resistance of air filters, this application provides a salt spray resistance test bench.

[0006] This application provides a salt spray resistance test bench, which adopts the following technical solution:

[0007] A salt spray resistance test bench includes a support frame and a fan soundproof box, an air supply duct, an upstream chamber, and a downstream chamber that are sequentially connected on the support frame. A fan is installed inside the fan soundproof box. A butterfly valve is installed on the air supply duct. A spray device for spraying salt spray is installed inside the upstream chamber. An air distribution plate is installed at the connection between the air supply duct and the upstream chamber. The surface of the air distribution plate is provided with a plurality of air distribution holes at intervals. A support assembly is installed on the support frame between the upstream chamber and the downstream chamber. The support assembly is used to support the air filter.

[0008] By adopting the above technical solution, the air filter is placed above the support assembly. The fan is started, and the fan soundproof box reduces the fan noise. The fan generates air, and the butterfly valve controls the airflow in the air supply duct, which facilitates the simulation of different wind environments. The air distribution hole divides the air delivered from the air supply duct, so that the air entering the upstream box is evenly blown onto the air filter to be tested. The spray device sprays salt spray to simulate a salt spray environment, which facilitates the testing of the air filter's salt spray resistance.

[0009] Optionally, the spraying device includes a nozzle, a connecting plate, a connecting block, and a connecting rod. The connecting rod is connected to the inner wall of the upstream tank. The connecting block is mounted on the connecting rod. The connecting plate is mounted on the connecting block. The nozzle is mounted on the connecting plate and faces the downstream tank. The nozzle is connected to a first liquid inlet pipe and a second liquid inlet pipe.

[0010] By adopting the above technical solution, salt spray liquid is delivered to the nozzle through the first and second inlet pipes, and the salt spray liquid is sprayed into the upstream box through the nozzle to simulate a salt spray environment.

[0011] Optionally, the support assembly includes four support cylinders, two support plates, two slide rails, two sliders, and a flow strip. The four support cylinders are installed on both sides below the support frame. The two support plates are connected at both ends to the piston rods of the two support cylinders on the same side. The two slide rails are installed above the two support plates and are parallel to each other. The two sliders correspond one-to-one with the two slide rails and are slidably connected to the slide rails. The flow strip is installed above the two sliders.

[0012] By adopting the above technical solution, the height of the support plate is adjusted by the support cylinder, thereby facilitating the adjustment of the air filter height. The position of the air filter is also easily adjusted by the flow strip and the slider on the slide rail.

[0013] Optionally, both the bottom of the upstream tank and the bottom of the downstream tank are provided with water receiving grooves, and both water receiving grooves are connected to water outlet pipes.

[0014] By adopting the above technical solution, the liquid sprayed and condensed in the upstream and downstream tanks is collected by the water receiving tank, and the liquid is output to the outside of the device through the water outlet pipe.

[0015] Optionally, a filter box is connected between the downstream housing and the fan soundproof box, and a protective filter is installed inside the filter box.

[0016] By adopting the above technical solution, after the tested air filter filters the salt mist, the air entering the downstream chamber still contains some salt mist. This salt mist is then filtered by the protective filter to protect the fan.

[0017] Optionally, a temperature and humidity sensor is installed inside the downstream chamber.

[0018] By adopting the above technical solution, the temperature and humidity inside the downstream chamber can be monitored in real time using temperature and humidity sensors.

[0019] Optionally, a flow balance orifice plate is installed in the downstream housing, and a plurality of balance holes are equally spaced on the surface of the flow balance orifice plate.

[0020] By adopting the above technical solution, the flow balance orifice plate diverts and balances the airflow passing through the test air filter, improving the working effect of the protective filter in the filter box and protecting the fan.

[0021] Optionally, a first pressure sensor and a second pressure sensor are installed in the downstream housing, located on both sides of the balancing flow orifice plate.

[0022] By adopting the above technical solution, the first pressure sensor and the second pressure sensor monitor the air pressure on both sides of the balance flow orifice plate in the downstream box.

[0023] Optionally, sampling tubes are provided in both the upstream and downstream boxes.

[0024] By adopting the above technical solution, the environment inside the upstream and downstream boxes is monitored through sampling tubes, and the air before and after filtration by the tested air filter is sampled.

[0025] Optionally, the top of the air supply duct near the upstream housing is connected to a balance cylinder, and the top of the balance cylinder is provided with an openable balance cover.

[0026] By adopting the above technical solution, the pressure inside the device can be adjusted by opening the balance cover on the balance head, thus avoiding excessive air pressure inside the device from affecting the test.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] 1. Place the air filter on top of the support assembly, start the fan, the fan soundproof box reduces fan noise, the fan generates air, the butterfly valve controls the air delivery force in the air supply duct, which is convenient for simulating different wind environments, the air distribution hole divides the air delivered from the air supply duct, so that the air entering the upstream box is evenly blown onto the air filter to be tested, and the spray device sprays salt spray to simulate the salt spray environment, which is convenient for testing the air filter's salt spray resistance.

[0029] 2. After the tested air filter filters the salt spray, the air entering the downstream chamber still contains some salt spray. This is then filtered by a protective filter to protect the fan. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of a salt spray resistance test bench.

[0031] Figure 2 This is a schematic diagram of the internal structure of a salt spray resistance test bench.

[0032] Figure 3 It is a structural diagram used to illustrate the supporting components.

[0033] Figure 4 yes Figure 2 An enlarged schematic diagram of part A in the middle.

[0034] Explanation of reference numerals in the attached drawings: 1. Support frame; 2. Fan; 21. Fan soundproof box; 3. Air supply duct; 31. Butterfly valve; 32. Balance cylinder; 321. Balance cover; 4. Upstream housing; 41. Sampling tube; 42. Air distribution plate; 421. Air distribution hole; 43. Water receiving tank; 431. Water outlet pipe; 5. Downstream housing; 51. Temperature and humidity sensor; 52. Balance flow orifice plate; 521. Balance hole; 53. First pressure sensor; 54. Second pressure sensor; 6. Support assembly; 61. Support cylinder; 62. Support plate; 63. Slide rail; 64. Slider; 65. Flow strip; 7. Spray device; 71. Nozzle; 72. Connecting plate; 73. Connecting rod; 74. Connecting block; 75. First liquid inlet pipe; 76. Second liquid inlet pipe; 8. Filter box; 81. Protective filter. Detailed Implementation

[0035] The present application will be further described in detail below with reference to all the accompanying drawings.

[0036] This application discloses an anti-salt spray test bench.

[0037] Reference Figure 1 and Figure 2 A salt spray resistance test bench includes a support frame 1 and a fan 2 soundproof box, an air supply duct 3, an upstream box 4, and a downstream box 5 connected sequentially on the support frame 1. The fan 2 soundproof box contains a fan 2. A support assembly 6 is provided on the support frame 1 between the upstream box 4 and the downstream box 5. An air filter is placed on the support assembly 6, and the fan 2 is started. The fan 2 soundproof box reduces the noise of the fan 2, and the fan 2 generates air. A butterfly valve 31 is installed on the air supply duct 3 to control the air supply force, which facilitates the simulation of different wind conditions. A spray device 7 for spraying salt spray is installed in the upstream box 4. The spray device 7 sprays salt spray to simulate a salt spray environment, which facilitates the testing of the salt spray resistance of the air filter.

[0038] Reference Figure 2 Sampling tubes 41 are installed in both the upstream chamber 4 and the downstream chamber 5. The environment inside the upstream chamber 4 and the downstream chamber 5 is monitored through the sampling tubes 41, and the air before and after filtration by the tested air filter is sampled.

[0039] Reference Figure 2An air distribution plate 42 is installed at the connection between the air supply duct 3 and the upstream housing 4. The surface of the air distribution plate 42 is provided with several air distribution holes 421 at intervals. The air distribution holes 421 divide the air delivered from the air supply duct 3 so that the air entering the upstream housing 4 is blown evenly onto the air filter to be tested.

[0040] Reference Figure 2 The top of the air supply duct 3, near the upstream housing 4, is connected to a balance cylinder 32. The top of the balance cylinder 32 is equipped with an openable balance cover 321. By opening the balance cover 321 on the balance head, the pressure inside the device can be adjusted to prevent excessive air pressure inside the device from affecting the test.

[0041] Reference Figure 3 The support assembly 6 includes four support cylinders 61, two support plates 62, two slide rails 63, two sliders 64, and a flow bar 65. The four support cylinders 61 are installed on both sides below the support frame 1. The two support plates 62 are connected at both ends to the piston rods of the two support cylinders 61 on the same side. The two slide rails 63 are installed above the two support plates 62 and are parallel to each other. The two sliders 64 correspond one-to-one with the two slide rails 63 and are slidably connected to them. The flow bar 65 is installed above the two sliders 64. The air filter is placed on the flow bar 65. The height of the support plates 62 is adjusted by the support cylinders 61, thus facilitating the adjustment of the air filter's height. The position of the air filter is easily adjusted by the flow bar 65 and the sliders 64 on the slide rails 63.

[0042] Reference Figure 2 and Figure 4 The spraying device includes a nozzle 71, a connecting plate 72, a connecting block 74, and a connecting rod 73. The connecting rod 73 is connected to the inner wall of the upstream housing 4. The connecting block 74 is mounted on the connecting rod 73, and the connecting plate 72 is mounted on the connecting block 74. The nozzle 71 is mounted on the connecting plate 72 and faces the downstream housing 5. The nozzle 71 is connected to a first inlet pipe 75 and a second inlet pipe 76. Salt spray liquid is supplied to the nozzle 71 through the first inlet pipe 75 and the second inlet pipe 76. The first inlet pipe 75 and the second inlet pipe 76 can supply salt spray liquid of different concentrations to the nozzle 71, thereby simulating different environments. The salt spray liquid is sprayed into the upstream housing 4 through the nozzle 71 to simulate a salt spray environment.

[0043] Reference Figure 2 Both the bottom of the upstream tank 4 and the bottom of the downstream tank 5 are provided with water receiving troughs 43, and both water receiving troughs 43 are connected to water outlet pipes 431. The liquid sprayed and condensed in the upstream tank 4 and the downstream tank 5 is collected through the water receiving troughs 43 and discharged outside the device through the water outlet pipes 431.

[0044] Reference Figure 2A filter box 8 connects the downstream housing 5 and the soundproof enclosure of the fan 2, and a protective filter 81 is installed inside the filter box 8. After the air filter under test filters the salt spray, the air entering the downstream housing 5 still contains some salt spray, which is filtered by the protective filter 81 to protect the fan 2.

[0045] Reference Figure 2 A temperature and humidity sensor 51 is installed inside the downstream housing 5. The temperature and humidity inside the downstream housing 5 are monitored in real time by the temperature and humidity sensor 51.

[0046] Reference Figure 2 A flow balancing orifice plate 52 is installed inside the downstream housing 5. The surface of the flow balancing orifice plate 52 has several balancing holes 521 spaced at equal intervals. The flow balancing orifice plate 52 diverts and balances the air passing through the test air filter, improving the working effect of the protective filter 81 in the filter box 8 and protecting the fan 2.

[0047] Reference Figure 2 The downstream housing 5 is equipped with a first pressure sensor 53 and a second pressure sensor 54 located on both sides of the balancing flow orifice plate 52. The first pressure sensor 53 and the second pressure sensor 54 monitor the air pressure on both sides of the balancing flow orifice plate 52 inside the downstream housing 5.

[0048] The implementation principle of the salt spray resistance test bench in this application embodiment is as follows: the air filter is placed on the flow strip 65 of the support component 6, the fan 2 is started, the soundproof box of the fan 2 reduces the noise of the fan 2, the fan 2 generates air, the butterfly valve 31 controls the air force delivered by the air supply duct 3 to facilitate the simulation of different air force environments, the air distribution hole 421 divides the air delivered from the air supply duct 3 so that the air entering the upstream box 4 is evenly blown onto the air filter to be tested, and the spray device 7 sprays salt spray to simulate the salt spray environment, which facilitates the testing of the salt spray resistance of the air filter.

[0049] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A salt spray resistance test bench, characterized in that: The system includes a support frame (1) and a fan (2) soundproof box, an air supply duct (3), an upstream box (4), and a downstream box (5) connected in sequence on the support frame (1). The fan (2) soundproof box is equipped with a fan (2). The air supply duct (3) is equipped with a butterfly valve (31). The upstream box (4) is equipped with a spray device (7) for spraying salt spray. A wind distribution plate (42) is provided at the connection position between the air supply duct (3) and the upstream box (4). The surface of the wind distribution plate (42) is provided with a plurality of wind distribution holes (421) at intervals. The support frame (1) is equipped with a support assembly (6) located between the upstream box (4) and the downstream box (5). The support assembly (6) is used to support the air filter.

2. The salt spray resistance test bench according to claim 1, characterized in that: The spraying device includes a nozzle (71), a connecting plate (72), a connecting block (74), and a connecting rod (73). The connecting rod (73) is connected to the inner wall of the upstream housing (4). The connecting block (74) is mounted on the connecting rod (73). The connecting plate (72) is mounted on the connecting block (74). The nozzle (71) is mounted on the connecting plate (72) and faces the downstream housing (5). The nozzle (71) is connected to a first liquid inlet pipe (75) and a second liquid inlet pipe (76).

3. The salt spray resistance test bench according to claim 1, characterized in that: The support assembly (6) includes four support cylinders (61), two support plates (62), two slide rails (63), two sliders (64), and a flow bar (65). The four support cylinders (61) are installed on both sides below the support frame (1). The two ends of the two support plates (62) are connected to the piston rods of the two support cylinders (61) on the same side. The two slide rails (63) are installed above the two support plates (62) and are parallel to each other. The two sliders (64) correspond one-to-one with the two slide rails (63) and are slidably connected to the slide rails (63). The flow bar (65) is installed above the two sliders (64).

4. The salt spray resistance test bench according to claim 1, characterized in that: Water receiving troughs (43) are provided at the bottom of the upstream box (4) and the bottom of the downstream box (5), and both water receiving troughs (43) are connected to water outlet pipes (431).

5. The salt spray resistance test bench according to claim 1, characterized in that: A filter box (8) is connected between the downstream housing (5) and the soundproof box of the fan (2), and a protective filter (81) is installed inside the filter box (8).

6. The salt spray resistance test bench according to claim 5, characterized in that: A temperature and humidity sensor (51) is installed inside the downstream housing (5).

7. The salt spray resistance test bench according to claim 1, characterized in that: The downstream housing (5) is equipped with a flow balance orifice plate (52), and the surface of the flow balance orifice plate (52) is provided with a plurality of balance holes (521) at equal intervals.

8. The salt spray resistance test bench according to claim 7, characterized in that: The downstream housing (5) is equipped with a first pressure sensor (53) and a second pressure sensor (54) located on both sides of the balanced flow orifice plate (52).

9. The salt spray resistance test bench according to claim 1, characterized in that: Sampling tubes (41) are installed in both the upstream box (4) and the downstream box (5).

10. A salt spray resistance test bench according to claim 1, characterized in that: The top of the air supply duct (3) near the upstream box (4) is connected to a balance cylinder (32), and the top of the balance cylinder (32) is provided with an openable balance cover (321).

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