Salt spray test device capable of uniformly spraying

Abstract

The utility model relates to a salt spray test device capable of uniformly spraying, and belongs to the technical field of salt spray tests. The device comprises a box body assembly, a top cover and a circulating air duct assembly, wherein a salt mist nozzle arranged around a test bed to be tested and turbulent flow assemblies on the two sides are arranged in the box body assembly; the turbulent flow assembly drives a turbulent flow plate with a through hole to rotate through a driving piece, stirs air and cooperates with a fan of the circulating air duct assembly, so that salt mist is forced to be uniformly dispersed; the circulating air duct assembly is connected with the box body through a butt flange and a sealing piece to form closed circulating air flow. According to the utility model, the problems of uneven salt mist sedimentation and sample contact difference are solved, and the reliability of test data is improved.

Description

Technical Field

[0001] This utility model relates to the field of salt spray testing technology, and in particular to a salt spray testing device for uniform spraying. Background Technology

[0002] With the development of technology in the field of salt spray testing, salt spray test chambers have emerged. These chambers use an air compressor to compress air, which is then purified by an oil-water separator before entering a saturated tank containing distilled water. After passing through a pressure regulating valve, the gas enters the sprayer. Simultaneously, the spray system comprises nozzles, a brine tank, and a tower sprayer. The compressed air, after purification, preheating, and pressure reduction, enters the nozzle. The system then supplies brine to the nozzle's suction pipe. Upon spraying, the compressed air rushes out of the nozzle, creating a negative pressure above the suction pipe. Under this negative pressure, the brine is rapidly propelled from the glass nozzle towards the top cone and diffuses throughout the entire test space, simulating the salt spray test environment. In other words, salt spray test chambers can simulate a salt spray environment to conduct corrosion tests on samples, thus providing an effective method or device for evaluating the corrosion resistance of materials.

[0003] However, the above-mentioned salt spray test method has the problem of uneven salt spray concentration, which leads to large differences in the degree of corrosion in different areas of the sample and reduces the reliability of the test data. The main reason is that after the salt spray is sprayed out of the nozzle, it settles in different areas of the salt spray test chamber without external interference, resulting in a high salt spray concentration near the nozzle and a low salt spray concentration in areas far from the nozzle. In addition, there is also the problem of uneven contact between the test sample and the salt spray in actual tests. Generally, the upper surface of the test sample has more contact with the settled salt spray, while the other surfaces have less contact. Utility Model Content

[0004] In response to the shortcomings of the existing production technology, the applicant provides a salt spray testing device that provides uniform spraying, thereby ensuring uniform salt spray deposition and uniform contact between the sample to be tested and the salt spray during the salt spray test.

[0005] The technical solution adopted in this utility model is as follows: A uniformly sprayed salt spray test device, comprising:

[0006] The housing assembly, which forms a cavity inside for salt spray testing;

[0007] A top cover is disposed on top of the housing assembly and is sealed to the housing assembly;

[0008] A circulating air duct assembly is installed on one side of the housing assembly, including a ventilation duct and a fan inside the ventilation duct; one end of the ventilation duct is connected to the air inlet on the housing assembly, and the other end is connected to the air outlet on the housing assembly, for accelerating the airflow inside the cavity.

[0009] At least one salt spray nozzle is disposed in the cavity for spraying salt spray into the cavity;

[0010] The airflow turbulence assembly is located on both sides inside the cavity and includes a driving component, a rotating rod, and a turbulence plate. The driving component drives the turbulence plate to rotate back and forth through the rotating rod. The turbulence plate has multiple through holes evenly distributed to agitate the air inside the cavity and evenly disperse the salt spray.

[0011] As a further improvement to the above technical solution:

[0012] Preferably, the housing assembly includes a housing body, and the side wall of the housing body is provided with an air inlet and an air outlet. The air inlet is connected to the air inlet end of the circulating air duct assembly, and the air outlet is connected to the air outlet end of the circulating air duct assembly.

[0013] Preferably, the back ends of the air inlet and the air outlet are respectively provided with a first docking flange and a second docking flange; the circulating air duct assembly includes a third docking flange and a fourth docking flange, the third docking flange is connected to the first docking flange, the fourth docking flange is connected to the second docking flange, and a sealing element is provided at the connection.

[0014] Preferably, the sealing element is a sealing ring structure, disposed between the first and third mating flanges, and between the second and fourth mating flanges.

[0015] Preferably, a viewing window is provided on one side of the top cover for observing the test conditions inside the cavity.

[0016] Preferably, a test platform is fixed at the center of the bottom surface of the housing assembly, and the salt spray nozzles are arranged around the test platform.

[0017] Preferably, the turbulence component further includes a protective housing, which is fixed to the inner side wall of the main body of the housing, and the drive component and the rotating rod are disposed inside the protective housing.

[0018] Preferably, the rotating rod is fixed to the inner wall of the main body of the box via a mounting base, and the mounting base is connected to the protective shell.

[0019] Preferably, the spoiler has a flat plate structure with a plurality of through holes evenly distributed on its surface; more preferably, the diameter of the through holes is 1 to 10 mm.

[0020] The beneficial effects of this utility model are as follows:

[0021] This utility model has a compact structure and is easy to operate. The turbulence component works in conjunction with the fan in the circulating air duct through a rotating turbulence plate with through holes to forcibly stir the airflow in the chamber, ensuring that the salt spray diffuses evenly in the cavity and solving the problem of uneven contact between the test object and the salt spray.

[0022] This utility model also has the following advantages:

[0023] (1) The air inlet and air outlet of this utility model are connected to the circulating air duct assembly through a mating flange and a sealing ring to form a closed circulation system, which prevents salt spray leakage and maintains the stability of the test environment; at the same time, the modular flange design facilitates disassembly and maintenance.

[0024] (2) The salt spray nozzles of this utility model are arranged around the test platform to be tested. Combined with the air disturbance of the baffle, the salt spray can be evenly contacted on multiple surfaces of the sample to avoid local corrosion differences.

[0025] (3) The protective shell of this utility model encloses the drive component, reducing salt spray corrosion and extending the life of the drive component. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0027] Figure 2 This is a schematic diagram of the overall structure of the present invention from another perspective.

[0028] Figure 3 This is a schematic diagram of the internal structure of this utility model (the top cover is hidden).

[0029] Figure 4 This is a schematic diagram of the structure of the turbulence component of this utility model.

[0030] The components are as follows: 100, enclosure assembly; 200, top cover; 300, viewing window; 400, circulating air duct assembly; 500, sealing components; 600, test bench; 700, salt spray nozzle; 800, turbulence assembly.

[0031] 110. Main body of the enclosure; 120. First connecting flange; 130. Second connecting flange; 140. Air outlet; 150. Air inlet;

[0032] 410. Third mating flange; 420. Fourth mating flange; 430. Ventilation duct; 440. Fan;

[0033] 810. Protective housing; 820. Drive unit; 830. Rotating rod; 840. Mounting base; 850. Spoiler; 860. Through hole. Detailed Implementation

[0034] The specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0035] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0037] When using the terms “including,” “having,” and “comprising” as described herein, another component may be added unless explicitly qualifying terms such as “only,” “consisting of,” etc. are used. Unless otherwise stated, singular terms may include plural forms and should not be construed as having a quantity of one.

[0038] It should be understood that although the terms "first," "second," etc., may be used herein to describe various elements, these elements should not be limited by these terms. These terms are used only to distinguish one element from another. For example, without departing from the scope of this invention, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element.

[0039] Furthermore, the accompanying drawings are not drawn to a 1:1 scale, and the relative dimensions of the components are shown in the drawings only as examples and not necessarily to actual scale.

[0040] like Figures 1-4 The accompanying drawing shows a schematic diagram of the structure of a uniformly sprayed salt spray test device according to an embodiment of the present invention; for ease of description, the drawing only shows the structure related to the embodiment of the present invention.

[0041] In this embodiment, a uniformly sprayed salt spray test device is provided, including a housing assembly 100, a top cover 200, a viewing window 300, a circulating air duct assembly 400, a sealing element 500, a test bench 600, a salt spray nozzle 700, and a turbulence component 800.

[0042] In this embodiment, the chamber assembly 100 is composed of a chamber body 110, which forms a sealed salt spray test chamber inside. The side wall of the chamber body 110 is provided with an air inlet 150 and an air outlet 140. The back end of the air inlet 150 is provided with a first docking flange 120, and the back end of the air outlet 140 is provided with a second docking flange 130. A test platform 600 is fixed in the middle of the bottom surface of the chamber body 110 for placing the sample to be tested.

[0043] In this embodiment, the top cover 200 is disposed above the box assembly 100 and is connected to the box body 110 through a sealing structure to form a sealed cavity.

[0044] Furthermore, a viewing window 300 is provided on one side of the top cover 200, which is made of transparent material to facilitate observation of the test conditions inside the cavity.

[0045] In this embodiment, the circulating air duct assembly 400 is mounted on one side of the housing assembly 100 and includes a ventilation duct 430 and a built-in fan 440.

[0046] Furthermore, the two ends of the ventilation duct 430 are connected to the first docking flange 120 and the second docking flange 130 of the housing assembly 100 via the third docking flange 410 and the fourth docking flange 420, respectively.

[0047] Furthermore, a sealing element 500 is provided between the mating flanges. The sealing element 500 is a sealing ring structure to ensure the airtightness of the connection and prevent salt spray leakage.

[0048] For example, fan 440 may be a bidirectional speed-controlled fan used to drive air to circulate within the cavity, forming a forced airflow.

[0049] In this embodiment, the salt spray nozzles 700 are arranged inside the cavity and evenly distributed around the test platform 600. In actual operation, the salt spray nozzles 700 are connected through an external liquid supply system and are used to spray salt spray into the cavity.

[0050] Please see Figures 3-4 In this embodiment, the turbulence assembly 800 is symmetrically arranged on both sides inside the cavity, including a protective shell 810, a driving component 820, a rotating rod 830, a mounting base 840, and a turbulence plate 850.

[0051] Furthermore, the protective outer shell 810 is fixed to the inner side wall of the main body 110, and the drive component 820 is housed inside; the drive component 820 is a motor, and the output end of the drive component 820 is connected to the rotating rod 830 through a coupling.

[0052] Furthermore, the rotating rod 830 is fixed to the inner wall of the housing body 110 via the mounting base 840, and the rotating rod 830 is fixedly connected to the spoiler 850.

[0053] Specifically, the spoiler 850 is a flat plate structure, and a plurality of through holes 860 are evenly distributed on the surface of the spoiler 850, with the diameter of the through holes 860 being 1 to 10 mm.

[0054] When the drive unit 820 is started, it drives the spoiler 850 to rotate back and forth. During the rotation, the through hole 860 cuts the airflow and allows the salt mist to pass through. At the same time, the fan 440 of the circulating air duct assembly 400 accelerates the airflow circulation, which together promotes the uniform diffusion of salt mist in the cavity.

[0055] The working principle of this utility model is as follows:

[0056] Salt spray spraying: Salt spray nozzle 700 sprays salt spray into the cavity to cover the sample on the test stand 600;

[0057] Airflow circulation: Fan 440 drives air to enter the circulation air duct assembly 400 from air inlet 150, and returns to the cavity from air outlet 140 through ventilation duct 430, forming a closed-loop airflow.

[0058] Turbulence effect: The turbulence plate 850 rotates under the drive of the drive component 820, and the through hole 860 agitates the airflow and evenly disperses the salt spray, preventing the salt spray from settling and stratifying.

[0059] Sealing and protection: Seal 500 ensures the tightness of the connection between the circulating air duct and the housing, and protective housing 810 protects the drive unit 820 from salt spray corrosion.

[0060] The present invention has a reasonable structure. Through the synergistic effect of the circulating air duct component 400 and the turbulence component 800, it achieves a highly uniform distribution of salt spray, solves the problem of uneven salt spray contact in traditional tests, and significantly improves the reliability of test data.

[0061] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0062] The embodiments described above merely illustrate the implementation of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A uniformly sprayed salt spray test apparatus, characterized in that, include: The housing assembly (100) has an interior cavity for salt spray testing; A top cover (200) is disposed above the housing assembly (100) and is sealed to the housing assembly (100); A circulating air duct assembly (400) is assembled on one side of the housing assembly (100), including a ventilation duct (430) and a fan (440) inside the ventilation duct (430); one end of the ventilation duct (430) is connected to an air inlet (150) on the housing assembly (100), and the other end is connected to an air outlet (140) on the housing assembly (100), for accelerating the airflow inside the cavity; At least one salt spray nozzle (700) is disposed in the cavity for spraying salt spray into the cavity; A flow-dispersing assembly (800) is disposed on both sides inside the cavity and includes a drive member (820), a rotating rod (830), and a flow-dispersing plate (850). The drive member (820) drives the flow-dispersing plate (850) to reciprocate through the rotating rod (830). The flow-dispersing plate (850) has multiple through holes (860) evenly distributed on it for stirring the air inside the cavity and dispersing the salt spray evenly.

2. The salt spray test apparatus for uniform spraying as described in claim 1, characterized in that, The housing assembly (100) includes a housing body (110), and the side wall of the housing body (110) is provided with an air inlet (150) and an air outlet (140). The air inlet (150) is connected to the air inlet end of the circulating air duct assembly (400), and the air outlet (140) is connected to the air outlet end of the circulating air duct assembly (400).

3. The salt spray test apparatus for uniform spraying as described in claim 2, characterized in that, The back ends of the air inlet (150) and the air outlet (140) are respectively provided with a first docking flange (120) and a second docking flange (130). The circulating air duct assembly (400) includes a third docking flange (410) and a fourth docking flange (420). The third docking flange (410) is connected to the first docking flange (120), and the fourth docking flange (420) is connected to the second docking flange (130). A seal (500) is provided at the connection.

4. The salt spray test apparatus for uniform spraying as described in claim 3, characterized in that, The sealing element (500) is a sealing ring structure, which is disposed between the first docking flange (120) and the third docking flange (410), and between the second docking flange (130) and the fourth docking flange (420).

5. The salt spray test apparatus for uniform spraying as described in claim 1, characterized in that, The top cover (200) has a viewing window (300) on one side for observing the test conditions inside the cavity.

6. The salt spray test apparatus for uniform spraying as described in claim 1, characterized in that, The test platform (600) is fixed at the center of the bottom surface of the housing assembly (100), and the salt spray nozzle (700) is arranged around the test platform (600).

7. The salt spray test apparatus for uniform spraying as described in claim 2, characterized in that, The turbulence assembly (800) also includes a protective housing (810), which is fixed to the inner wall of the main body of the housing (110), and the drive component (820) and the rotating rod (830) are located inside the protective housing (810).

8. The salt spray test apparatus for uniform spraying as described in claim 7, characterized in that, The rotating rod (830) is fixed to the inner wall of the main body of the box (110) by the mounting base (840), and the mounting base (840) is connected to the protective shell (810).

9. The salt spray test apparatus for uniform spraying as described in claim 1, characterized in that, The spoiler (850) is a flat plate structure, and multiple through holes (860) are evenly distributed on the surface of the spoiler (850).

10. The salt spray test apparatus for uniform spraying as described in claim 9, characterized in that, The diameter of the through hole (860) is 1 to 10 mm.

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