A corrosion test chamber

Abstract

The present invention provides a corrosion test box, which relates to the technical field of salt spray test machines. A corrosion test box includes a test box shell, and a salt spray nozzle and an air flow nozzle arranged inside the test box shell; a first valve body is fixedly installed in the test box shell, the first valve body is fixedly connected with a liquid delivery pipe, the liquid delivery pipe is connected with the inside of the salt spray nozzle, the first valve body is fixedly connected with a first liquid inlet pipe and a second liquid inlet pipe, the first liquid inlet pipe is used to receive salt water, and the second liquid inlet pipe is used to receive cleaning liquid; a second valve body is fixedly installed in the test box shell, the second valve body is fixedly connected with a first gas delivery pipe and a second gas delivery pipe, the first gas delivery pipe is connected with the inside of the air flow nozzle, the first gas delivery pipe is fixedly connected with an air inlet pipe, and the second gas delivery pipe is connected with the inside of the liquid delivery pipe. The present invention has the function of improving the cleaning efficiency of the corrosion test box by the operator.

Description

Technical Field

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

[0002] The salt spray test machine uses salt spray corrosion to detect the reliability of the sample being tested. Salt spray refers to a dispersion system composed of tiny salt droplets in the atmosphere, and is one of the three-proof series of artificial environments. The salt spray test machine can perform accelerated salt spray corrosion tests and composite salt spray tests on the protective layer of metal materials, parts, electronic components and the outer layer of industrial products, thereby testing the corrosion resistance adaptability of parts, as well as testing the quality of product quality control and R&D processes.

[0003] During the test, the test personnel input salt water into the interior of the test machine shell through the salt spray nozzle. At the same time, the test personnel release compressed airflow to the salt water input by the salt spray nozzle through the air flow nozzle, so that the salt water appears as mist in the salt spray test machine.

[0004] For example, in the Chinese patent with announcement number CN217180531U and subject name of Salt Spray Corrosion Test Chamber, the operator sets the nozzle between the first and second clamping plates. During the test, the nut seat moves to drive the sliding block to move, thereby adjusting the horizontal position of the nozzle. The turntable drives the nozzle to rotate, and the nozzle sprays salt spray for testing.

[0005] Regarding the above-mentioned related technologies, the nozzle of the test chamber may be blocked due to the characteristics of the test material, the use environment and improper use. To clean the nozzle of the test machine, you must first disassemble the nozzle of the test chamber, then soak and clean it with alcohol, xylene or 1:1 hydrochloric acid, or dredge it with ultra-fine steel wire. This cleaning method is not only troublesome, but also easy to damage the glass nozzle, making the maintenance of the test machine more troublesome. Summary of the invention

[0006] In view of this, the present invention provides a corrosion test box, aiming to solve the problem that the glass nozzle is easily damaged when cleaning the salt spray test box and the maintenance of the test machine is troublesome.

[0007] A corrosion test box provided by the present invention includes a test box shell, and a salt spray nozzle and an air flow nozzle arranged inside the test box shell; a first valve body is fixedly installed in the test box shell, the first valve body is fixedly connected with a liquid delivery pipe, the liquid delivery pipe is connected with the inside of the salt spray nozzle, the first valve body is fixedly connected with a first liquid inlet pipe and a second liquid inlet pipe, the first liquid inlet pipe is used to receive salt water, and the second liquid inlet pipe is used to receive cleaning liquid; a second valve body is fixedly installed in the test box shell, the second valve body is fixedly connected with a first air delivery pipe and a second air delivery pipe, the first air delivery pipe is connected with the inside of the air flow nozzle, the first air delivery pipe is fixedly connected with an air inlet pipe, and the second air delivery pipe is connected with the inside of the liquid delivery pipe.

[0008] By adopting the above technical solution, the first valve body switches the opening and closing of the first liquid inlet pipe and the second liquid inlet pipe, controls the salt spray nozzle to enter the cleaning state from the working state, and reduces the operation of disassembly and installation of the salt spray nozzle by the operator when cleaning the salt spray nozzle. In addition, the compressed air flow for diffusing the salt spray is delivered to the salt spray nozzle to replace the steel wire to dredge the salt spray nozzle, thereby reducing the probability of the salt spray nozzle being scratched during cleaning, which is conducive to the normal realization of the salt spray machine function.

[0009] Optionally, a mist delivery pipe is fixedly connected to the test box shell, a side wall of the mist delivery pipe is fixedly connected to a support shell, and the salt mist nozzle and the air flow nozzle are fixedly installed in the support shell.

[0010] By adopting the above technical solution, the mist delivery pipe can store cleaning liquid, so that the liquid level of the cleaning liquid in the mist delivery pipe rises to cover the salt mist nozzle and the air flow nozzle, so that the salt mist nozzle is soaked, further improving the cleaning effect of the salt mist nozzle.

[0011] Optionally, an infusion mechanism is provided on the inner bottom wall of the test box shell, and the infusion mechanism is used to deliver cleaning liquid to the first valve body.

[0012] Optionally, the infusion mechanism includes a liquid storage tank fixedly mounted on the inner bottom wall of the test box shell, the liquid storage tank is used to store cleaning liquid, the liquid storage tank is fixedly connected to the first liquid inlet pipe, the first liquid inlet pipe is fixedly connected to a water pump, a control shell is fixedly mounted on the outer wall of the first liquid inlet pipe, a first electromagnet is fixedly connected to the inner wall of the control shell, a first valve block is slidably arranged below the first electromagnet, and the first valve block can close the first liquid inlet pipe when it moves downward.

[0013] By adopting the above technical solution, the first valve block can control the opening and closing of the first liquid inlet pipe. The first valve block is used to squeeze the first liquid inlet pipe to close it, replacing the conventional valve body to control the closing of the first liquid inlet pipe, in order to prevent the cleaning liquid from corroding the conventional valve body parts.

[0014] Optionally, the bottom wall of the mist delivery pipe is fixedly connected to a water outlet pipe, and one end of the water outlet pipe away from the mist delivery pipe is connected to the inside of the liquid storage tank, and the water outlet pipe is arranged in the control housing.

[0015] Optionally, a second electromagnet is fixedly connected to the inner wall of the control housing, and a second valve block is slidably arranged below the second electromagnet, and the second valve block can close the water outlet pipe when it moves downward.

[0016] Optionally, a water tank is fixedly installed on the inner bottom wall of the test box shell, and the water tank is used to store clean water. The water tank is fixedly connected to a water inlet pipe, and the water inlet pipe is connected to the inside of the first liquid inlet pipe. The water inlet pipe is arranged in the control shell, and the control shell is arranged between the water tank and the water pump.

[0017] By adopting the above technical solution, the clean water in the water storage tank enters the salt spray nozzle through the water inlet pipe, the first liquid inlet pipe, the first valve body and the liquid delivery pipe, so that the cleaning liquid in the salt spray nozzle is rinsed by the clean water, thereby reducing the negative impact of the residual cleaning liquid in the salt spray nozzle on the test.

[0018] Optionally, a third electromagnet is fixedly connected to the inner wall of the control housing, and a third valve block is slidably arranged below the third electromagnet, and the third valve block can close the water inlet pipe when it moves downward.

[0019] Optionally, a liquid inlet pipe and a liquid outlet pipe are fixedly connected to the side wall of the liquid storage tank so as to allow the cleaning liquid to flow, and the liquid outlet pipe is provided with a liquid outlet valve.

[0020] By adopting the above technical solution, when the cleaning liquid has finished soaking the salt spray nozzle, the second electromagnet attracts the second valve block upward, the water outlet pipe is opened to transport the cleaning liquid in the mist pipe to the liquid storage tank again, the liquid outlet valve is opened, and the cleaning liquid in the liquid storage tank is output through the liquid outlet pipe.

[0021] In summary, compared with the prior art, the present invention includes at least one of the following beneficial technical effects:

[0022] 1. The first valve body is used to switch the opening and closing of the first liquid inlet pipe and the second liquid inlet pipe, so as to control the salt spray nozzle to enter the cleaning state from the working state, and reduce the disassembly and installation operations of the salt spray nozzle when the operator cleans the salt spray nozzle. In addition, the compressed air flow for diffusing salt spray is delivered to the salt spray nozzle to replace the steel wire to dredge the salt spray nozzle, thereby reducing the probability of the salt spray nozzle being scratched during cleaning, which is conducive to the normal realization of the salt spray machine function.

[0023] 2. During the cleaning process, the cleaning liquid output by the salt mist nozzle falls into the mist pipe, and the liquid level of the cleaning liquid in the mist pipe rises to cover the salt mist nozzle and the air flow nozzle, so that the salt mist nozzle is soaked, further improving the cleaning effect of the salt mist nozzle. At the same time, the air flow nozzle transmits compressed air to the outside to prevent the cleaning liquid in the mist pipe from entering the air flow nozzle. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention;

[0025] Figure 2 A schematic diagram of the structure of the mist delivery pipe according to an embodiment of the present invention;

[0026] Figure 3 This is a schematic diagram of the structure of the first valve body and the second valve body in an embodiment of the present invention;

[0027] Figure 4 A schematic diagram of the internal structure of the test box housing according to an embodiment of the present invention;

[0028] Figure 5 It is a schematic diagram of the internal structure of the control housing according to an embodiment of the present invention.

[0029] Explanation of the accompanying drawings: 1. test chamber shell; 11. salt spray nozzle; 12. air flow nozzle; 2. first valve body; 21. liquid delivery pipe; 22. first liquid inlet pipe; 23. second liquid inlet pipe; 3. second valve body; 31. first air delivery pipe; 32. second air delivery pipe; 33. air inlet pipe; 4. liquid delivery mechanism; 41. liquid storage tank; 411. liquid delivery pipe; 412. liquid outlet pipe; 413. liquid outlet valve; 42. water pump; 43. control shell; 44. first electromagnet; 45. first valve block; 5. mist delivery pipe; 51. support shell; 52. water outlet pipe; 521. second electromagnet; 522. second valve block; 6. water storage tank; 61. water inlet pipe; 62. third electromagnet; 63. third valve block. DETAILED DESCRIPTION

[0030] To make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the following will be combined with the embodiments of the present invention. Figure 1-Figure 5 , the technical scheme of the embodiment of the present invention is clearly and completely described. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present invention.

[0031] This embodiment provides a corrosion test box. Figure 1 , Figure 2 and Figure 3A corrosion test box includes a test box shell 1, and a salt spray nozzle 11 and an air flow nozzle 12 are arranged inside the test box shell 1. The salt spray nozzle 11 is used to transport salt spray into the test box shell 1, and the air flow nozzle 12 is used to spray compressed air flow to the salt spray output by the salt spray nozzle 11, so that the salt spray is diffused in the test box shell 1. A first valve body 2 and a second valve body 3 are fixedly installed inside the test box shell 1. The first valve body 2 is fixedly connected with a liquid delivery pipe 21, and the liquid delivery pipe 21 is connected with the inside of the salt spray nozzle 11. The first valve body 2 is fixedly connected with a first liquid inlet pipe 22 and a second liquid inlet pipe 23. The first liquid inlet pipe 22 is used to receive salt water, and the second liquid inlet pipe 23 is used to receive cleaning liquid. The second valve body 3 is fixedly connected with a first gas delivery pipe 31 and a second gas delivery pipe 32, and the first gas delivery pipe 31 is connected with the inside of the air flow nozzle 12. The first gas delivery pipe 31 is fixedly connected with an air inlet pipe 33, and the second gas delivery pipe 32 is connected with the inside of the liquid delivery pipe 21. A liquid infusion mechanism 4 is fixedly disposed on the inner bottom wall of the test box housing 1 , and the liquid infusion mechanism 4 is used to deliver cleaning liquid to the first valve body 2 .

[0032] During the test, the first valve body 2 opens the first liquid inlet pipe 22 and closes the second liquid inlet pipe 23. The operator delivers salt water into the first valve body 2 through the first liquid inlet pipe 22, and the salt water in the first valve body 2 is delivered to the salt spray nozzle 11 through the liquid delivery pipe 21. The air inlet pipe 33 delivers compressed air to the inside of the first air delivery pipe 31, and the second valve body 3 closes the second air delivery pipe 32, so that the compressed air enters the air flow nozzle 12 through the first air delivery pipe 31, and the salt spray nozzle 11 cooperates with the air flow nozzle 12 to diffuse the salt spray into the test box shell 1.

[0033] When the test is completed, the first valve body 2 closes the first liquid inlet pipe 22 and opens the second liquid inlet pipe 23. The operator delivers the cleaning liquid into the first valve body 2 through the second liquid inlet pipe 23, and the cleaning liquid enters the liquid delivery pipe 21. At the same time, the operator controls the second valve body 3 so that the second valve body 3 opens the second air delivery pipe 32, and the compressed air in the first air delivery pipe 31 is delivered to the liquid delivery pipe 21 through the second valve body 3. At this time, the compressed air in the liquid delivery pipe 21 and the cleaning liquid enter the salt spray nozzle 11 to clean the salt spray nozzle 11. At the same time, the air flow nozzle 12 delivers compressed air to the outside to prevent the cleaning liquid from entering the air flow nozzle 12. The first one-way valve can be installed at the part of the liquid delivery pipe 21 close to the first valve body 2, and the first one-way valve can limit the compressed air flow in the second air delivery pipe 32 from entering the first valve body 2. The second one-way valve can be installed at the second air delivery pipe 32, and the second one-way valve can limit the cleaning liquid in the liquid delivery pipe 21 from entering the second valve body 3.

[0034] The first valve body 2 is utilized to switch the opening and closing of the first liquid inlet pipe 22 and the second liquid inlet pipe 23, thereby controlling the salt spray nozzle 11 to enter the cleaning state from the working state, reducing the operation of disassembling and installing the salt spray nozzle 11 when the operator cleans the salt spray nozzle 11. In addition, the compressed air flow for diffusing the salt spray is delivered to the salt spray nozzle 11, replacing the steel wire to dredge the salt spray nozzle 11, thereby reducing the probability of the salt spray nozzle 11 being scratched during cleaning, which is beneficial to the normal realization of the function of the salt spray machine.

[0035] Reference Figure 2 and Figure 3 The test box housing 1 is fixedly connected with a mist delivery pipe 5, and the side wall of the mist delivery pipe 5 is fixedly connected with a support housing 51. The salt mist nozzle 11 and the air flow nozzle 12 are fixedly installed in the support housing 51. During the test, the salt mist generated by the salt mist nozzle 11 is transported to the test box housing 1 through the mist delivery pipe 5. During the cleaning process, the cleaning liquid output by the salt mist nozzle 11 falls into the mist delivery pipe 5. The liquid level of the cleaning liquid in the mist delivery pipe 5 rises and covers the salt mist nozzle 11 and the air flow nozzle 12, so that the salt mist nozzle 11 is soaked, further improving the cleaning effect of the salt mist nozzle 11. At the same time, the air flow nozzle 12 delivers compressed air to the outside to prevent the cleaning liquid in the mist delivery pipe 5 from entering the air flow nozzle 12.

[0036] Reference Figure 1 , Figure 4 and Figure 5 The infusion mechanism 4 includes a liquid storage tank 41 fixedly mounted on the inner bottom wall of the test box housing 1. The liquid storage tank 41 is used to store cleaning liquid. The side wall of the liquid storage tank 41 is fixedly connected with a liquid delivery pipe 411 capable of delivering cleaning liquid into the liquid storage tank 41. The liquid storage tank 41 is fixedly connected with the first liquid inlet pipe 22. The first liquid inlet pipe 22 is fixedly connected with a water pump 42. A control housing 43 is fixedly mounted on the outer side wall of the first liquid inlet pipe 22. The control housing 43 is arranged on the inner bottom wall of the test box housing 1. A first electromagnet 44 is fixedly connected to the inner side wall of the control housing 43. A first valve block 45 is slidably arranged below the first electromagnet 44. The first valve block 45 moves downward to close the first liquid inlet pipe 22.

[0037] When it is necessary to deliver cleaning liquid to the first valve body 2, the first electromagnet 44 starts to absorb the first valve block 45 upwards, so that the first valve block 45 is separated from the first liquid inlet pipe 22, and the water pump 42 starts to deliver the cleaning liquid in the liquid storage tank 41 to the first valve body 2 through the first liquid inlet pipe 22. After the delivery is completed, the first electromagnet 44 releases the first valve block 45, and the first valve block 45 falls down under its own gravity and squeezes the first liquid inlet pipe 22 to deform, so that the first liquid inlet pipe 22 is closed. The first valve block 45 is used to squeeze the first liquid inlet pipe 22 to close the first liquid inlet pipe 22, instead of the conventional valve body to control the closing of the first liquid inlet pipe 22, in order to prevent the cleaning liquid from corroding the conventional valve body parts.

[0038] Reference Figure 1 , Figure 2 and Figure 5 The bottom wall of the mist delivery pipe 5 is fixedly connected with a water outlet pipe 52, the material of the water outlet pipe 52 can be squeezed and deformed, the end of the water outlet pipe 52 away from the mist delivery pipe 5 is connected with the inside of the liquid storage tank 41, and the side wall of the liquid storage tank 41 is fixedly connected with a liquid outlet pipe 412 that allows the cleaning liquid to flow, and the liquid outlet pipe 412 is installed with a liquid outlet valve 413. The water outlet pipe 52 is installed in the control housing 43, and the inner side wall of the control housing 43 is fixedly connected with a second electromagnet 521, and a second valve block 522 is slidably arranged below the second electromagnet 521. When the cleaning liquid in the mist delivery pipe 5 soaks the salt mist nozzle 11, the second valve block 522 closes the water outlet pipe 52. When the cleaning liquid has completely soaked the salt mist nozzle 11, the second electromagnet 521 absorbs the second valve block 522 upward, and the water outlet pipe 52 is opened to transport the cleaning liquid in the mist delivery pipe 5 to the liquid storage tank 41 again. The liquid outlet valve 413 is opened, and the cleaning liquid in the liquid storage tank 41 is output through the liquid outlet pipe 412.

[0039] Reference Figure 4 and Figure 5 A water tank 6 is fixedly installed on the bottom wall of the test box shell 1. The water tank 6 is used to store clean water. The water tank 6 is fixedly connected to a water inlet pipe 61. The water inlet pipe 61 is connected to the inside of the first liquid inlet pipe 22. The water inlet pipe 61 is installed in the control shell 43. The control shell 43 is arranged between the water tank 6 and the water pump 42. A third electromagnet 62 is fixedly connected to the inner side wall of the third control shell 43. A third valve block 63 is slidably arranged below the third electromagnet 62. The third valve block 63 can close the water inlet pipe 61 by moving downward.

[0040] When the cleaning liquid has finished cleaning the salt spray nozzle 11, the first valve block 45 closes the first liquid inlet pipe 22, the second valve block 522 closes the outlet pipe 52, the third electromagnet 62 adsorbs the third valve block 63 to open the water inlet pipe 61, and the water pump 42 is started again, so that the clean water in the water storage tank 6 enters the salt spray nozzle 11 through the water inlet pipe 61, the first liquid inlet pipe 22, the first valve body 2 and the liquid delivery pipe 21, so that the cleaning liquid in the salt spray nozzle 11 is flushed with clean water, reducing the negative impact of the residual cleaning liquid in the salt spray nozzle 11 on the test. At the same time, the second valve body 3 opens the second air delivery pipe 32, so that the compressed air flow dries the residual clean water in the salt spray nozzle 11, thereby completing the cleaning of the salt spray nozzle 11. The clean water output by the salt spray nozzle 11 is output through the mist delivery pipe 5, the outlet pipe 52, the liquid storage tank 41 and the outlet pipe 52. While the clean water is flowing, it can flush the residual cleaning liquid in each component, reducing the corrosion of the cleaning liquid to the parts.

[0041] The implementation principle of a corrosion test box in an embodiment of the present invention is as follows: when the test is completed, the first valve body 2 closes the first liquid inlet pipe 22 and opens the second liquid inlet pipe 23, the first electromagnet 44 starts to absorb the first valve block 45 upward, so that the first valve block 45 is separated from the first liquid inlet pipe 22, the water pump 42 starts to transport the cleaning liquid in the liquid storage tank 41 to the first valve body 2 through the first liquid inlet pipe 22, and the operator transports the cleaning liquid into the first valve body 2 through the second liquid inlet pipe 23, and the cleaning liquid enters the liquid delivery pipe 21. At the same time, the operator controls the second valve body 3 to open the second air delivery pipe 32, and the compressed air in the first air delivery pipe 31 is transported to the liquid delivery pipe 21 through the second valve body 3. At this time, the compressed air in the liquid delivery pipe 21 and the cleaning liquid enter the salt spray nozzle 11 to clean the salt spray nozzle 11. The cleaning liquid output by the salt spray nozzle 11 is output through the mist delivery pipe 5, the water outlet pipe 52, the liquid storage tank 41 and the water outlet pipe 52.

[0042] When the cleaning liquid has finished cleaning the salt spray nozzle 11, the first valve block 45 closes the first liquid inlet pipe 22, the second valve block 522 closes the water outlet pipe 52, the third electromagnet 62 attracts the third valve block 63 to open the water inlet pipe 61, and the water pump 42 is started again, so that the clean water in the water storage tank 6 enters the salt spray nozzle 11 through the water inlet pipe 61, the first liquid inlet pipe 22, the first valve body 2 and the liquid delivery pipe 21, so that the cleaning liquid in the salt spray nozzle 11 is rinsed by the clean water.

[0043] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] The above are preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A corrosion test chamber, comprising a test chamber shell, and a salt spray nozzle and an air flow nozzle arranged inside the test chamber shell, characterized in that: Also includes: A first valve body is fixedly installed in the test box housing, the first valve body is fixedly connected with a liquid infusion pipe, the liquid infusion pipe is connected with the inside of the salt spray nozzle, the first valve body is fixedly connected with a first liquid inlet pipe and a second liquid inlet pipe, the first liquid inlet pipe is used to receive the cleaning liquid, and the second liquid inlet pipe is used to receive the salt water; A second valve body is fixedly installed in the test box housing, the second valve body is fixedly connected with a first gas pipe and a second gas pipe, the first gas pipe is connected with the inside of the air flow nozzle, the first gas pipe is fixedly connected with an air inlet pipe, and the second gas pipe is connected with the inside of the liquid delivery pipe; A mist delivery pipe is fixedly connected in the test box shell, a side wall of the mist delivery pipe is fixedly connected to a support shell, and a salt spray nozzle and an air flow nozzle are fixedly installed in the support shell; The inner bottom wall of the test box shell is provided with an infusion mechanism, and the infusion mechanism is used to deliver cleaning liquid to the first valve body; The infusion mechanism includes a liquid storage tank fixedly installed on the inner bottom wall of the test box shell, the liquid storage tank is used to store cleaning liquid, the liquid storage tank is fixedly connected to the first liquid inlet pipe, the first liquid inlet pipe is fixedly connected to a water pump, a control shell is fixedly installed on the outer wall of the first liquid inlet pipe, the inner wall of the control shell is fixedly connected to a first electromagnet, a first valve block is slidably arranged below the first electromagnet, and the first valve block can close the first liquid inlet pipe when it moves downward.

2. A corrosion test box according to claim 1, characterized in that: The bottom wall of the mist delivery pipe is fixedly connected with a water outlet pipe, one end of the water outlet pipe away from the mist delivery pipe is connected with the inside of the liquid storage tank, and the water outlet pipe is arranged in the control housing.

3. A corrosion test box according to claim 2, characterized in that: A second electromagnet is fixedly connected to the inner wall of the control housing, a second valve block is slidably arranged below the second electromagnet, and the second valve block can close the water outlet pipe when it moves downward.

4. A corrosion test box according to claim 1, characterized in that: A water tank is fixedly installed on the bottom wall of the test box shell, and the water tank is used to store clean water. The water tank is fixedly connected to a water inlet pipe, and the water inlet pipe is connected to the inside of the first liquid inlet pipe. The water inlet pipe is arranged in the control shell, and the control shell is arranged between the water tank and the water pump.

5. A corrosion test box according to claim 4, characterized in that: The inner wall of the control housing is fixedly connected with a third electromagnet, and a third valve block is slidably arranged below the third electromagnet. The third valve block can close the water inlet pipe when it moves downward.

6. A corrosion test box according to claim 1, characterized in that: The side wall of the liquid storage box is fixedly connected with a liquid delivery pipe and a liquid outlet pipe for circulating the cleaning liquid, and the liquid outlet pipe is installed with a liquid outlet valve.

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