Salt spray corrosion test box

Abstract

The utility model discloses a salt-spray corrosion test box, and relates to the technical field of salt-spray corrosion test boxes. The salt spray corrosion test box comprises a test box body, the test box body is provided with a mist treatment structure, the mist treatment structure comprises a first fan mounted at the top of the test box body, and two exhaust pipes are connected between an exhaust opening of the first fan and the test box body, so that mist generated in a salt spray test in the test box body can be conveniently extracted; an air outlet of the first fan is communicated with a filter box through an air supply pipe, so that the extracted mist can be conveniently filtered for the second time, a purification box is arranged on the rear side of the test box body, and the rear end of the filter box is communicated with a conveying pipe; the end, away from the filter box, of the conveying pipe extends to the bottom of the inner side of the purification box, mist obtained after secondary filtration can be conveniently introduced into the purification box for further purification treatment, and it is avoided that the mist is directly discharged, and corrosion is caused to external objects.

Description

Technical Field

[0001] The utility model belongs to the technical field of salt spray corrosion test chambers, in particular to a salt spray corrosion test chamber. Background Art

[0002] Salt spray corrosion test chamber is mainly used for environmental testing equipment of rapid corrosion of metal products in artificially simulated salt spray environment. Compared with the natural environment, the artificial simulated salt spray environment conditions are controllable, which can greatly increase the corrosion rate and greatly shorten the test time. It plays an important role in identifying the product's resistance to natural salt spray environment performance.

[0003] Announcement No.: CN220154230U, discloses: a salt spray corrosion test chamber, through the cooperation of the lower spray pipe and the blower, and the setting of the guide mechanism, the salt spray can be completely in contact with the bottom and the front, back, left and right sides of the sample, and the salt spray is made to contact with the top of the sample through the upper spray pipe, so that all positions on the surface of the sample are in contact with the salt spray, and the wind blown out by the blower is guided by the inclined plate, so that the sample is always kept stably suspended, and at the same time, it is ensured that the salt sprayed out of the lower spray pipe can smoothly move upward and contact the bottom of the sample.

[0004] The above technical solution still has the following disadvantages during the specific implementation process:

[0005] There is a lack of corresponding fog treatment structure. The fog produced by the salt spray test contains salt. If it is not filtered and purified and directly discharged into the air, it will corrode other objects and cause unnecessary damage. At the same time, the long-term accumulation of fog can easily cause discomfort to the staff in the room.

[0006] In response to the above problems, we propose a salt spray corrosion test chamber. Utility Model Content

[0007] Technical Solution

[0008] In order to solve the above technical problems, the utility model provides a salt spray corrosion test box, including a test box body, on which a mist processing structure is arranged, and the mist processing structure includes:

[0009] The first fan is installed on the top of the test box body, two exhaust pipes are connected between the first fan exhaust port and the test box body, a filter cartridge is arranged on the exhaust pipe, a filter screen is arranged inside the filter cartridge, the first fan air outlet is connected to a filter box through an air supply pipe, a plurality of activated carbon filter plates are arranged inside the filter box, a purification box is arranged on the rear side of the test box body, a neutralizing alkaline liquid is filled inside the purification box, a delivery pipe is connected to the rear end of the filter box, and an end of the delivery pipe away from the filter box extends to the bottom of the inner side of the purification box.

[0010] The mist treatment structure also includes a second fan and a return air duct. The second fan is installed on the top of the purification box. A connecting pipe is connected between the second fan exhaust port and the purification box. One end of the return air duct is connected to the second fan outlet, and the other end is connected to the air supply duct.

[0011] A pH sensor is installed on the purification box, and a detection probe of the pH sensor extends into the neutralized alkaline liquid.

[0012] The filter cartridge is provided with a through groove, an arc-shaped plate is arranged inside the through groove, the filter screen plate is arranged on the inner surface of the arc-shaped plate, a mounting opening is penetrated on one side of the filter box, a sealing cover is fixed in the mounting opening by bolts, and several activated carbon filter plates are fixed on the inner surface of the sealing cover.

[0013] The upper rear part of the purification box is connected with an exhaust pipe, the delivery pipe is installed with a first one-way valve, and the return air pipe is installed with a second one-way valve.

[0014] The top of the purification box is connected to a water injection pipe, the bottom of the purification box is connected to a drainage pipe, a top cover is threadedly provided on the upper end of the water injection pipe, solenoid valves are installed on the exhaust pipe and the drainage pipe, and a controller is installed on one side of the purification box.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The utility model facilitates the salt spray corrosion test on the sample through the test box body, wherein the first fan and the exhaust pipe cooperate with each other, and the mist generated by the salt spray test in the test box body is conveniently extracted, and the extracted mist is conveniently filtered in combination with the filter cartridge and the filter screen plate inside the filter cartridge, and the mist after the preliminary filtering is transported to the inside of the filter box under the action of the air supply pipe, and the mist is secondary filtered under the action of a plurality of activated carbon filter plates, and the mist after the secondary filtering is further passed into the neutralizing alkaline liquid inside the purification box in combination with the conveying pipe for neutralization reaction, so as to achieve the purpose of filtering and purifying the mist generated by the salt spray test, and the neutralized mist is discharged upward through the exhaust pipe, which solves the problem of lack of corresponding mist processing structure in the prior art, and the mist generated by the salt spray test contains salt, and if it is not filtered and purified, it is directly discharged into the air, which will corrode other objects and cause unnecessary damage, and at the same time avoids the long-term accumulation of mist, which causes discomfort to the staff in the room;

[0017] The pH value sensor is used to detect the pH value of the neutralizing alkaline liquid in real time, determine the neutralization status of the neutralizing alkaline liquid, and combine with the drainage pipe and the water injection pipe to discharge the neutralized alkaline liquid in time and introduce new neutralizing alkaline liquid to achieve the purpose of replacing the neutralizing alkaline liquid, so as to continue to neutralize the mist.

[0018] Under the action of the second fan, combined with the connecting pipe, the neutralized mist in the upper layer of the purification box can be extracted, and then drawn back into the supply air duct under the action of the return air duct, and then returned to the filter box through the supply air duct for filtering again, which effectively improves the filtering effect of the mist. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 It is a side view of the utility model;

[0021] Figure 3 for Figure 2 Structural diagram of the middle section AA;

[0022] Figure 4 for Figure 1 A schematic diagram of the structure from another perspective;

[0023] Figure 5 It is a cross-sectional view of the filter cartridge in the utility model;

[0024] Figure 6 It is a structural schematic diagram of the activated carbon filter plate and the filter box in the utility model in a separated state.

[0025] The markings in the attached drawings are: 1. Test chamber body; 2. First fan; 3. Exhaust duct; 4. Filter cartridge; 5. Filter screen; 6. Filter box; 7. Activated carbon filter plate; 8. Purification chamber; 9. Neutralization alkaline liquid; 10. Delivery pipe; 11. Second fan; 12. Return air duct; 13. PH value sensor; 14. Sealing cover; 15. Exhaust pipe; 16. First one-way valve; 17. Second one-way valve; 18. Water injection pipe; 19. Drain pipe. DETAILED DESCRIPTION

[0026] This specific implementation is a salt spray corrosion test box, such as Figure 1-Figure 6 As shown, the salt spray corrosion test chamber includes a test chamber body 1, on which a mist processing structure is provided, and the mist processing structure includes:

[0027] The first fan 2 is installed on the top of the test box body 1, and two exhaust pipes 3 are connected between the exhaust port of the first fan 2 and the test box body 1. A filter cartridge 4 is arranged on the exhaust pipe 3, and a filter screen plate 5 is arranged inside the filter cartridge 4. The air outlet of the first fan 2 is connected to a filter box 6 through an air supply pipe, and a plurality of activated carbon filter plates 7 are arranged inside the filter box 6. A purification box 8 is arranged on the rear side of the test box body 1, and the interior of the purification box 8 is filled with a neutralizing alkaline liquid 9. The rear end of the filter box 6 is connected to a delivery pipe 10, and the delivery pipe 10 extends to the bottom of the inner side of the purification box 8 at one end away from the filter box 6.

[0028] The test box body 1 is convenient for conducting a salt spray corrosion test on the sample. With the cooperation of the first fan 2 and the exhaust pipe 3, the mist generated by the salt spray test inside the test box body 1 can be extracted. Combined with the filter cartridge 4 and the filter screen plate 5 inside it, the extracted mist can be initially filtered. At the same time, under the action of the air supply pipe, the mist after the initial filtration is transported to the inside of the filter box 6. Under the action of several activated carbon filter plates 7, the mist is secondary filtered. Combined with the delivery pipe 10, the mist after the secondary filtration is passed into the neutralizing alkaline liquid 9 inside the purification box 8 for further neutralization reaction, so as to achieve the purpose of filtering and purifying the mist generated by the salt spray test, and solve the problem of lack of corresponding mist processing structure in the prior art. The mist generated by the salt spray test contains salt. If it is not filtered and purified, it will be directly discharged into the air, which will corrode other objects and cause unnecessary damage. At the same time, it avoids the long-term accumulation of mist and causes discomfort to the staff in the room.

[0029] The mist treatment structure also includes a second fan 11 and a return air duct 12. The second fan 11 is installed on the top of the purification box 8. A connecting pipe is connected between the air outlet of the second fan 11 and the purification box 8. One end of the return air duct 12 is connected to the air outlet of the second fan 11, and the other end is connected to the air supply duct. A pH sensor 13 is installed on the purification box 8. The detection probe of the pH sensor 13 extends into the neutralizing alkaline liquid 9. The pH sensor 13 is used to detect the pH value of the neutralizing alkaline liquid 9 in real time and determine the neutralization status of the neutralizing alkaline liquid 9. Under the action of the second fan 11, combined with the connecting pipe, the neutralized mist in the upper layer of the purification box 8 can be extracted, and under the action of the return air duct 12, it is extracted back into the air supply duct, and then returns to the filter box 6 through the air supply duct for filtering again, thereby effectively improving the filtering effect of the mist.

[0030] A through groove is provided on the filter cartridge 4, an arc-shaped plate is provided inside the through groove, the filter screen plate 5 is provided on the inner surface of the arc-shaped plate, a mounting opening is penetrated on one side of the filter box 6, a sealing cover 14 is fixed in the mounting opening by bolts, and several activated carbon filter plates 7 are fixed on the inner surface of the sealing cover 14. The arc-shaped plate is convenient for installing and replacing the filter screen plate 5, and combined with the sealing cover 14, the installation, fixation and replacement of the activated carbon filter plate 7 are convenient.

[0031] An exhaust pipe 15 is connected to the upper rear side of the purification box 8, a first one-way valve 16 is installed on the delivery pipe 10, and a second one-way valve 17 is installed on the return air pipe 12. Under the action of the first one-way valve 16, the neutralized alkaline liquid 9 inside the purification box 8 is prevented from flowing back into the delivery pipe 10. Combined with the second one-way valve 17, the mist after preliminary filtration is prevented from entering the return air pipe 12, which affects the purification effect of the mist.

[0032] The top of the purification box 8 is connected to a water injection pipe 18, the bottom of the purification box 8 is connected to a drainage pipe 19, the upper end of the water injection pipe 18 is threaded with a top cover, the exhaust pipe 15 and the drainage pipe 19 are both equipped with solenoid valves, and a controller is installed on one side of the purification box 8.

[0033] Example:

[0034] When in use, firstly put the sample to be tested into the test box body 1 and perform the salt spray corrosion test;

[0035] At the same time, the first fan 2 is started, and the mist generated by the salt spray test inside the test box body 1 is extracted under the action of the exhaust pipe 3, and is initially filtered through the filter screen plate 5 inside the filter cartridge 4. The mist after the initial filtration is transported to the inside of the filter box 6 through the air supply pipe, and the mist is secondary filtered under the action of a number of activated carbon filter plates 7. Combined with the delivery pipe 10, the mist after the secondary filtration is passed into the neutralizing alkaline liquid 9 inside the purification box 8 for neutralization reaction, so as to achieve the purpose of filtering and purifying the mist generated by the salt spray test, and the purified mist is discharged through the exhaust pipe 15 to avoid direct discharge of the mist;

[0036] Wherein, under the action of the pH value sensor 13, the pH value of the neutralized alkaline liquid 9 is detected in real time, and the detection data is transmitted to the controller;

[0037] When it is detected that the neutralized alkaline liquid 9 reaches the requirement of needing to be replaced, the buzzer on the controller reminds the staff to close the solenoid valve on the exhaust pipe 15 and open the solenoid valve on the drain pipe 19 to discharge the neutralized alkaline liquid 9 inside the purification box 8, and at the same time open the top cover on the water injection pipe 18 to inject new neutralized alkaline liquid 9 into the purification box 8 through the water injection pipe 18, so as to achieve the purpose of replacing the neutralized alkaline liquid 9 and continue to neutralize the mist;

[0038] At the same time, the second fan 11 is turned on by the controller. Under the action of the connecting pipe, the neutralized mist on the upper side of the purification box 8 is extracted, and is drawn back into the air supply pipe through the return air pipe 12, and returns to the filter box 6 again. After being filtered by the activated carbon filter plate 7, it is passed into the newly replaced neutralizing alkaline liquid 9 to continue the neutralization reaction, which effectively improves the purification effect of the mist. The neutralizing alkaline liquid 9 can be replaced without stopping the extraction of mist from the test box body 1. At the same time, it is avoided that the mist introduced into the purification box 8 cannot be fully neutralized during the replacement of the neutralizing alkaline liquid 9, resulting in poor purification effect.

[0039] Compared with the prior art, the utility model extracts the mist generated in the salt spray corrosion test process by setting a mist processing structure, and discharges it after filtering and purification, thereby solving the problem that the prior art lacks a corresponding mist processing structure. The mist generated in the salt spray test contains salt. If it is not filtered and purified and directly discharged into the air, it will corrode other objects and cause unnecessary damage. At the same time, it solves the problem that the mist accumulates for a long time and easily causes discomfort to the staff in the room.

[0040] It should be further explained that the installation structure, connection method or setting method of each component in the utility model are all common mechanical methods, and any method that can achieve its beneficial effects can be implemented. At the same time, the first fan 2, the second fan 11 and the pH value sensor 13 in the utility model are all purchased on the market, and those skilled in the art can install and use them according to the requirements;

[0041] The test box body 1 in the present invention is the box body in the comparative document, and a spray mechanism is installed inside it for salt spray corrosion test. The specific structure and use method of the spray mechanism are the prior art already disclosed in the comparative document, and will not be described in detail here.

[0042] All technical features in this embodiment can be freely combined according to actual needs.

[0043] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A salt spray corrosion test chamber, comprising a test chamber body (1), It is characterized in that The test box body (1) is provided with a mist processing structure, and the mist processing structure comprises: A first fan (2), the first fan (2) is installed on the top of the test box body (1), two exhaust pipes (3) are connected between the exhaust port of the first fan (2) and the test box body (1), a filter cartridge (4) is arranged on the exhaust pipe (3), a filter screen plate (5) is arranged inside the filter cartridge (4), the air outlet of the first fan (2) is connected to a filter box (6) through an air supply pipe, a plurality of activated carbon filter plates (7) are arranged inside the filter box (6), a purification box (8) is arranged on the rear side of the test box body (1), the purification box (8) is filled with a neutralizing alkaline liquid (9), the rear end of the filter box (6) is connected to a delivery pipe (10), and the delivery pipe (10) extends from one end away from the filter box (6) to the bottom of the inner side of the purification box (8).

2. A salt spray corrosion test chamber according to claim 1, It is characterized in that The mist treatment structure also includes a second fan (11) and a return air duct (12); the second fan (11) is installed on the top of the purification box (8); a connecting pipe is connected between the air outlet of the second fan (11) and the purification box (8); one end of the return air duct (12) is connected to the air outlet of the second fan (11), and the other end is connected to the air supply duct.

3. A salt spray corrosion test chamber according to claim 2, It is characterized in that A pH sensor (13) is installed on the purification box (8), and a detection probe of the pH sensor (13) extends into the neutralized alkaline liquid (9).

4. A salt spray corrosion test chamber according to claim 3, It is characterized in that The filter cartridge (4) is provided with a through slot, an arc-shaped plate is arranged inside the through slot, the filter screen plate (5) is arranged on the inner surface of the arc-shaped plate, a mounting opening is penetrated on one side of the filter box (6), a sealing cover (14) is fixed in the mounting opening by bolts, and a plurality of the activated carbon filter plates (7) are fixed on the inner surface of the sealing cover (14).

5. A salt spray corrosion test chamber according to claim 4, It is characterized in that The upper rear portion of the purification box (8) is connected to an exhaust pipe (15), a first one-way valve (16) is installed on the delivery pipe (10), and a second one-way valve (17) is installed on the return air pipe (12).

6. A salt spray corrosion test chamber according to claim 5, It is characterized in that The top of the purification box (8) is connected to a water injection pipe (18), the bottom of the purification box (8) is connected to a drainage pipe (19), the upper end of the water injection pipe (18) is threadedly provided with a top cover, the exhaust pipe (15) and the drainage pipe (19) are both equipped with solenoid valves, and a controller is installed on one side of the purification box (8).

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