Corrosion performance testing device for ecological board

Abstract

The invention provides a corrosion performance testing device for ecological plates, and relates to the field of corrosion performance testing equipment, the corrosion performance testing device comprises a salt spray corrosion test box, an automatic turnover mechanism is installed in the salt spray corrosion test box, and an automatic mist scraping mechanism is installed on a PVC box cover. Through the arrangement of the automatic turnover mechanism, the automatic timed turnover operation of the ecological plate is realized, and the uniformity of salt mist coverage is improved; through the arrangement of the automatic mist scraping mechanism, the effect of automatically removing condensed salt mist on the inner side of the transparent window is achieved, the health of operators is guaranteed, the stability of the test environment in the box is maintained, and the reliability of test data is improved; the problems that when a traditional salt spray corrosion test box is used for testing an ecological plate, salt spray coverage on the upper surface and the lower surface of the plate is uneven due to natural settling of salt spray, and the observation window is prone to condensing salt spray to force workers to open covers frequently, so that health is harmed, the stable test environment in the box is damaged, and the accuracy and reliability of test results are seriously affected are solved.

Description

Technical Field

[0001] This invention relates to the field of corrosion performance testing equipment, and more particularly to a corrosion performance testing device for eco-friendly building materials. Background Technology

[0002] Eco-friendly building materials, made from wood or plant fibers as the base material and composite with environmentally friendly materials such as polymer resins, have been widely used in interior decoration, furniture manufacturing, and outdoor construction due to their environmental friendliness and high plasticity. As the application scenarios of eco-friendly building materials continue to expand, their usage environments are becoming increasingly complex. In addition to conventional dry indoor environments, they are also used in outdoor building decoration, renovations in humid areas, and facility construction in coastal high-salt-spray environments. These materials must withstand long-term corrosion from moisture, salt, and chemical media. Therefore, testing and evaluating the corrosion performance of eco-friendly building materials has become a crucial step in ensuring product quality and expanding application scenarios. Currently, salt spray corrosion test chambers are used when testing the corrosion performance of eco-friendly building materials.

[0003] When testing eco-friendly boards in traditional salt spray corrosion test chambers, the natural settling of salt spray results in a large amount of salt spray adhering to the upper surface of the boards, while the lower surface has less adhering due to its own shielding. This uneven coverage seriously affects the accuracy of the test results. In addition, during the observation phase, salt spray easily condenses on the inside of the observation window on the chamber lid, severely obstructing the view. Staff are forced to frequently open the lid to observe, which causes salt spray to escape, not only harming health but also disrupting the stable testing environment inside the chamber, further affecting the reliability of the test data. Summary of the Invention

[0004] This invention relates to a corrosion performance testing device for eco-friendly building materials. It solves the problems of uneven salt spray coverage on the upper and lower surfaces of the building materials due to natural salt spray settling when testing eco-friendly building materials in traditional salt spray corrosion test chambers. Furthermore, the observation window is prone to salt spray condensation, forcing staff to open the cover frequently, which not only harms health but also disrupts the stable testing environment inside the chamber, seriously affecting the accuracy and reliability of the test results.

[0005] In a first aspect, the present invention provides a corrosion performance testing device for ecological building materials, specifically comprising: a salt spray corrosion test chamber, wherein a PVC cover is rotatably connected to the top rear side of the salt spray corrosion test chamber via a rotating shaft, and a transparent viewing window is fixedly embedded inside the PVC cover; an automatic flipping mechanism is installed inside the salt spray corrosion test chamber; the automatic flipping mechanism includes a flipping frame, which is rotatably connected to the inside of the salt spray corrosion test chamber via a rotating shaft, a clamping mechanism is provided on the inner side of the flipping frame, and a quick-fixing component is installed on the clamping mechanism; and an automatic fog-scraping mechanism is installed on the PVC cover.

[0006] Furthermore, a human body sensor and a control box are installed on the front face of the salt spray corrosion test chamber, with the human body sensor located at the upper middle part of the front side of the salt spray corrosion test chamber.

[0007] Furthermore, the automatic tilting mechanism also includes a reducer, which is installed on the rear side wall of the salt spray corrosion test chamber. The output shaft of the reducer is fixedly connected to the rotating shaft on the rear side of the tilting frame, and the input shaft of the reducer is fixedly connected to the rotating shaft of the drive motor. The drive motor is installed on the reducer.

[0008] Furthermore, the clamping mechanism includes stainless steel clamping screws and clamping plates. There are two stainless steel clamping screws, which are rotatably connected to the front and rear sides of the flipping frame. There are also two clamping plates, which are slidably connected inside the flipping frame. Each stainless steel clamping screw has two reverse threads arranged symmetrically on its exterior, and these two reverse threads are respectively connected to the two clamping plates. A synchronous pulley is fixedly connected to the rear end of each stainless steel clamping screw, and the two synchronous pulleys are connected by a synchronous belt drive.

[0009] Furthermore, the quick-fixing component includes a clamping frame, which is fixedly connected to the clamping surface of the clamping plate. A spring guide rod is slidably connected to the top of the clamping frame in a uniform manner. A movable clamping block is fixedly connected to the lower end of the spring guide rod. A spring is sleeved on the outside of each spring guide rod between the movable clamping block and the clamping frame.

[0010] Furthermore, the movable clamping blocks are arranged in a rectangular array inside the clamping frame, and the bottom corner of each movable clamping block is rounded.

[0011] Furthermore, the automatic defogging mechanism includes an upper sliding plate and a lower sliding plate. The upper sliding plate is slidably connected to the front top of the PVC box cover, and the lower sliding plate is slidably connected to the front inside of the PVC box cover. A magnet is fixedly connected to both the upper and lower sliding plates, and the two magnets attract each other. A rubber scraper is provided on the upper surface of the lower sliding plate, and the rubber scraper is in close contact with the inner side of the transparent window.

[0012] Furthermore, the automatic fog-scraping mechanism also includes a small motor, which is installed on the top of the PVC box cover. A reciprocating lead screw is fixedly connected to the shaft of the small motor. The right end of the reciprocating lead screw is rotatably connected to the top of the PVC box cover. A lead screw nut is connected to the outside of the reciprocating lead screw through a spiral groove. The lead screw nut is fixedly connected inside the upper sliding plate.

[0013] Furthermore, each of the magnet blocks is coated with an anti-corrosion coating.

[0014] Furthermore, a transparent corrosion-resistant protective cover is installed on the front top of the PVC box cover, and the transparent corrosion-resistant protective cover is located outside the upper sliding plate, small motor, reciprocating screw and screw nut.

[0015] This invention provides a corrosion performance testing device for eco-friendly building materials, which has the following beneficial effects: I. This invention, through the setting of an automatic flipping mechanism, achieves automatic timed flipping of the eco-friendly board during corrosion resistance testing by using a timer controller to periodically start and stop the drive motor. Specifically, after the drive motor starts, it drives the flipping frame to rotate through the reducer, thereby causing the clamping mechanism, quick-fixing components, and the eco-friendly board under test to flip together. When the eco-friendly board has completed a 180-degree flip, the timer controller automatically shuts off the drive motor, thus ensuring that the salt spray evenly covers the upper and lower surfaces of the eco-friendly board, effectively solving the problem of uneven salt spray deposition, significantly improving the uniformity of salt spray coverage, and thus improving the accuracy of the test results.

[0016] Second, this invention, through the automatic fog-scraping mechanism, enables the automatic removal of salt spray condensation inside the transparent window when personnel approach for observation, avoiding frequent opening of the chamber due to obstructed vision. Specifically, when a personnel approaches the front of the salt spray corrosion test chamber, a human body sensor triggers a small motor to start, driving a reciprocating screw to rotate. Under the action of the spiral groove of the reciprocating screw, the screw nut drives the upper sliding plate and the upper magnetic block to move back and forth. Through magnetic coupling, the lower magnetic block drives the lower sliding plate and the rubber scraper to move synchronously, scraping away the salt spray adhering to the inner surface of the transparent window. This effectively solves the problem of blurred vision caused by fogging in the transparent window, avoids salt spray leakage and fluctuations in the test environment caused by repeated opening of the cover, protects the health of operators, maintains the stability of the test environment inside the chamber, and further improves the reliability of test data.

[0017] Third, by setting up a quick-fixing component, when installing the eco-friendly board, one side of the eco-friendly board can be placed at the bottom of the inner side of the clamping frame. At this time, the movable clamping block automatically applies pressure to the side of the eco-friendly board under the action of the spring force outside the spring guide rod, so as to achieve initial clamping and fixing. Thus, no continuous manual support is required during the positioning of the eco-friendly board, which effectively improves the convenience and work efficiency of the subsequent overall fixing operation. Attached Figure Description

[0018] To more clearly illustrate the technical solution of the present invention, the accompanying drawings of the present invention will be briefly described below.

[0019] In the attached diagram: Figure 1 A three-dimensional structural schematic diagram of this application is shown; Figure 2A structural schematic diagram of this application from a rear view is shown; Figure 3 This diagram illustrates the structure of this application in its disassembled state. Figure 4 A schematic diagram of the automatic flipping mechanism, clamping mechanism, and quick-reinforcing component of this application is shown. Figure 5 A schematic diagram of the clamping mechanism and quick-reinforcement assembly of this application is shown; Figure 6 The diagram shows an axial view of the quick-strengthening component of this application. Figure 7 This paper shows a schematic diagram of the disassembled structure of the quick-strengthening component of this application; Figure 8 This paper shows a schematic diagram of the structure of the transparent corrosion-resistant protective cover after partial cross-section. Figure 9 A schematic diagram of the structure of the defogging mechanism of this application is shown; Figure 10 A schematic diagram of the PVC box cover, lower sliding plate, and rubber scraper of this application is shown.

[0020] List of reference numerals 1. Salt spray corrosion test chamber; 101. PVC chamber cover; 102. Transparent viewing window; 103. Human body sensor; 104. Control box; 105. Transparent corrosion-resistant protective cover; 2. Automatic tilting mechanism; 201. Tilting frame; 202. Reducer; 203. Drive motor; 3. Clamping mechanism; 301. Stainless steel clamping screw; 302. Clamping plate; 303. Synchronous pulley; 4. Quick-fixing components; 401. Clamping frame; 402. Movable clamping block; 403. Spring guide rod; 5. Automatic fog-scraping mechanism; 501. Upper sliding plate; 502. Lower sliding plate; 503. Rubber scraper; 504. Magnet block; 505. Small motor; 506. Reciprocating lead screw; 507. Lead screw nut. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the described embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Example 1: Please refer to Figures 1 to 10: This invention proposes a corrosion performance testing device for ecological building materials, comprising: a salt spray corrosion test chamber 1, a PVC cover 101 rotatably connected to the top rear side of the salt spray corrosion test chamber 1 via a rotating shaft, a transparent viewing window 102 fixedly embedded inside the PVC cover 101; an automatic flipping mechanism 2 installed inside the salt spray corrosion test chamber 1; the automatic flipping mechanism 2 includes a flipping frame 201, which is rotatably connected to the inside of the salt spray corrosion test chamber 1 via a rotating shaft, a clamping mechanism 3 provided on the inner side of the flipping frame 201, and a quick-fixing component 4 installed on the clamping mechanism 3; and an automatic fog-scraping mechanism 5 installed on the PVC cover 101. By setting up the automatic flipping mechanism 2, during the corrosion resistance test of the eco-friendly board, the timer controller is used to turn the drive motor 203 on and off at regular intervals, realizing the automatic timed flipping operation of the eco-friendly board. After the eco-friendly board has been flipped 180 degrees, the timer controller automatically turns off the drive motor 203, so that the salt spray evenly covers the upper and lower surfaces of the eco-friendly board, effectively solving the problem of uneven salt spray deposition and thus improving the accuracy of the test results.

[0023] A human body sensor 103 and a control box 104 are installed on the front face of the salt spray corrosion test chamber 1. The control box 104 is equipped with a timer controller. The human body sensor 103 is located at the upper middle part of the front side of the salt spray corrosion test chamber 1. When the human body sensor 103 approaches the front of the salt spray corrosion test chamber 1, the human body sensor 103 triggers the small motor 505 to start, realizing the automatic operation of the automatic fog scraping mechanism 5.

[0024] The automatic flipping mechanism 2 also includes a reducer 202, which is installed on the rear side wall of the salt spray corrosion test chamber 1. The output shaft of the reducer 202 is fixedly connected to the rotating shaft on the rear side of the flipping frame 201, and the input shaft of the reducer 202 is fixedly connected to the rotating shaft of the drive motor 203. The drive motor 203 is installed on the reducer 202. The automatic flipping mechanism 2 is used to drive the clamping mechanism 3, the quick fixing component 4 and the ecological board to perform automatic flipping operations.

[0025] The clamping mechanism 3 includes stainless steel clamping screws 301 and clamping plates 302. The stainless steel clamping screws 301 are resistant to salt spray corrosion, ensuring reliability for use inside the salt spray corrosion test chamber 1. There are two stainless steel clamping screws 301, rotatably connected to the front and rear sides of the flip frame 201. There are also two clamping plates 302, slidably connected inside the flip frame 201. Each stainless steel clamping screw 301 has two reverse threads arranged symmetrically on its exterior. Two reverse threads are connected to two clamping plates 302 respectively; each stainless steel clamping screw 301 has a synchronous pulley 303 fixedly connected to its rear end, and the two synchronous pulleys 303 are connected by a synchronous belt drive. The synchronous belt is a polyurethane synchronous belt, which has the characteristics of wear resistance and acid and alkali corrosion resistance, thereby ensuring reliability when used inside the salt spray corrosion test chamber 1; through the setting of the synchronous pulley 303 and the synchronous belt, when clamping and fixing the ecological board, only one of the stainless steel clamping screws 301 needs to be rotated, which further improves the convenience of clamping and fixing the ecological board.

[0026] The quick-fixing component 4 includes a clamping frame 401, which is fixedly connected to the clamping surface of the clamping plate 302. A spring guide rod 403 is slidably connected to the top of the clamping frame 401 in a uniform manner. A movable clamping block 402 is fixedly connected to the lower end of the spring guide rod 403. A spring is sleeved on the outside of each spring guide rod 403 between the movable clamping block 402 and the clamping frame 401. By adopting the above technical solution, when installing the eco-friendly board, one side of the eco-friendly board can be placed at the bottom inside the clamping frame 401. At this time, the movable clamping block 402 automatically applies pressure to the side of the eco-friendly board under the action of the spring force of the spring guide rod 403, so as to achieve initial clamping and fixing. Thus, no manual support is required during the positioning of the eco-friendly board, which effectively improves the convenience and work efficiency of the subsequent overall fixing operation.

[0027] The movable clamping blocks 402 are arranged in a rectangular array inside the clamping frame 401. The bottom corner of each movable clamping block 402 is rounded. With the rounded corner, when one side of the eco-friendly board is placed inside the clamping frame 401, the movable clamping blocks 402 can be automatically moved upward without moving them upward. This eliminates the step of moving the movable clamping blocks 402 upward and improves the fixing efficiency of the eco-friendly board.

[0028] Example 2, based on Example 1, such as Figures 8 to 10As shown, the automatic defogging mechanism 5 includes an upper sliding plate 501 and a lower sliding plate 502. The upper sliding plate 501 is slidably connected to the front top of the PVC box cover 101, and the lower sliding plate 502 is slidably connected to the front inside of the PVC box cover 101. A magnet 504 is fixedly connected to both the upper sliding plate 501 and the lower sliding plate 502, and the two magnets 504 are magnetically attracted to each other. A rubber scraper 503 is provided on the upper end face of the lower sliding plate 502, and the rubber scraper 503 is in close contact with the inner side of the transparent window 102. The automatic defogging mechanism 5 also includes a small motor 505, which is installed on the top of the PVC box cover 101. A reciprocating screw 506 is fixedly connected to the shaft of the small motor 505. The right end of the reciprocating screw 506 is rotatably connected to the top of the PVC box cover 101. A screw nut 507 is connected to the outside of the reciprocating screw 506 through a spiral groove. The screw nut 507 is fixedly connected to the inside of the upper sliding plate 501. By adopting the above technical solution, the salt spray condensation inside the transparent window 102 is automatically cleared when the staff approaches for observation, avoiding frequent opening of the chamber due to obstructed vision. Specifically, when the staff approaches the front of the salt spray corrosion test chamber 1, the human body sensor 103 triggers the small motor 505 to start, driving the reciprocating screw 506 to rotate. Under the action of the spiral groove of the reciprocating screw 506, the screw nut 507 drives the upper sliding plate 501 and the upper magnet block 504 to move back and forth. Through magnetic coupling, the lower magnet block 504 drives the lower sliding plate 502 and the rubber scraper 503 to move synchronously, scraping off the salt spray adhering to the inner surface of the transparent window 102. This effectively solves the problem of blurred vision caused by condensation in the transparent window 102, avoids salt spray leakage and fluctuations in the test environment caused by repeated opening of the cover, protects the health of the operators, maintains the stability of the test environment inside the chamber, and further improves the reliability of the test data.

[0029] Each magnet block 504 is coated with an anti-corrosion coating, which gives the magnet block 504 good anti-corrosion properties and extends its service life.

[0030] A transparent corrosion-resistant protective cover 105 is installed on the top front side of the PVC box cover 101. The transparent corrosion-resistant protective cover 105 is located outside the upper sliding plate 501, the small motor 505, the reciprocating lead screw 506 and the lead screw nut 507, and is used to protect the small motor 505, the reciprocating lead screw 506 and the lead screw nut 507 from salt spray corrosion.

[0031] The working principle of this invention is as follows: During testing, one side of the eco-friendly board is first placed inside the lower part of the clamping frame 401. The movable clamping block 402 initially presses and fixes one side of the eco-friendly board under the action of the spring force outside the spring guide rod 403, thereby improving the convenience and efficiency of the eco-friendly board in subsequent fixing operations. Then, one of the stainless steel clamping screws 301 is rotated. Under the cooperation of the synchronous pulley 303 and the synchronous belt, the other stainless steel clamping screw 301 rotates synchronously. At this time, the two clamping plates 302 move towards each other under the action of the two reverse threads outside the stainless steel clamping screws 301, so that the other end of the eco-friendly board is inserted into the clamping frame 401 on the other side and pressed and fixed by the movable clamping block 402 on the other side. Then, the stainless steel clamping screw 301 is rotated again, and the opposite surfaces of the two clamping plates 302 are in close contact with the left and right sides of the eco-friendly board, thereby clamping and fixing the eco-friendly board.

[0032] Then, the PVC box cover 101 is closed, and salt spray is sprayed through the spray tower inside the salt spray corrosion test chamber 1 to test the corrosion resistance of the eco-friendly board. During the test, the drive motor 203 is started and stopped at regular intervals by the timer controller inside the control box 104 (for example, it is started once every 10-30 minutes, and the specific start time can be preset by the timer controller as needed). When the drive motor 203 is started, it drives the flipping frame 201 to rotate through the output shaft of the reducer 202, thereby causing the clamping mechanism 3, the quick fixing component 4, and the eco-friendly board to flip. After the eco-friendly board has completed the 180-degree flipping operation, the timer controller turns off the drive motor 203. In this way, the salt spray covers the upper and lower surfaces of the eco-friendly board more evenly, thereby improving the accuracy of the test results.

[0033] During the test, when it is necessary to observe the test conditions, the staff comes to the front of the salt spray corrosion test chamber 1. At this time, the human body sensor 103 detects the human body and then starts the small motor 505. The small motor 505 drives the reciprocating screw 506 to rotate. Under the action of the spiral groove on the reciprocating screw 506, the screw nut 507 moves the upper sliding plate 501 and the upper magnet 504 back and forth. Due to the magnetic attraction, the lower magnet 504 moves the lower sliding plate 502 and the rubber scraper 503 back and forth, thereby scraping away the salt spray condensed on the inner side of the transparent window 102, avoiding obstruction of the staff's observation line of sight. This eliminates the need to frequently open the cover for observation, prevents salt spray from escaping, protects health, ensures a stable test environment inside the chamber, and further improves the reliability of the test data.

[0034] The following points should be noted in this article: 1. The accompanying drawings of the embodiments of the present invention only involve the structures involved in the embodiments of the present invention; other structures can refer to general designs.

[0035] 2. Where there is no conflict, the embodiments of the present invention and the features thereof can be combined with each other to obtain new embodiments.

[0036] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A device for testing the corrosion performance of an ecological board, comprising: The utility model provides a salt spray corrosion test box (1), the top rear side of salt spray corrosion test box (1) is rotatably connected with PVC box cover (101) through the pivot, and the inside of PVC box cover (101) is fixedly embedded with transparent window (102), characterized by being installed with automatic turnover mechanism (2) in salt spray corrosion test box (1), automatic turnover mechanism (2) includes turnover frame (201), and turnover frame (201) is rotatably connected in the inside of salt spray corrosion test box (1), the inside of turnover frame (201) is provided with clamping mechanism (3), and quick fixing assembly (4) is installed on clamping mechanism (3), and automatic fog scraping mechanism (5) is installed on PVC box cover (101).

2. The device for testing corrosion performance of ecological board according to claim 1, characterized in that: The front end face of the salt spray corrosion test box (1) is provided with a human body induction sensor (103) and a control box (104), and the human body induction sensor (103) is located on the upper end of the middle part of the front side of the salt spray corrosion test box (1).

3. The device for testing corrosion performance of ecological board according to claim 1, characterized in that: The automatic turnover mechanism (2) further comprises a speed reducer (202) installed on the rear wall of the salt spray corrosion test box (1), the output shaft of the speed reducer (202) is fixedly connected with the pivot on the rear side of the turnover frame (201), and the input shaft of the speed reducer (202) is fixedly connected with the pivot of the driving motor (203), and the driving motor (203) is installed on the speed reducer (202).

4. The device for testing corrosion performance of ecological board according to claim 1, characterized in that: The clamping mechanism (3) comprises stainless steel clamping screws (301) and clamping plates (302), the number of the stainless steel clamping screws (301) is two, the stainless steel clamping screws (301) are rotatably connected on the front and rear sides of the turnover frame (201), the number of the clamping plates (302) is two, the clamping plates (302) are slidably connected in the turnover frame (201), each stainless steel clamping screw (301) is provided with two reverse threads on the outside in a left-right symmetrical manner, and the two reverse threads on the outside of the stainless steel clamping screw (301) are connected with the two clamping plates (302) respectively; each stainless steel clamping screw (301) is fixedly connected with a synchronous pulley (303) at the rear end, and the two synchronous pulleys (303) are drivingly connected through a synchronous belt.

5. The device for testing corrosion performance of ecological board according to claim 4, characterized in that: The quick fixing assembly (4) comprises a clamping frame (401) fixedly connected to the clamping surface of the clamping plate (302), a spring guide rod (403) slidably connected to the top of the clamping frame (401) in a uniform manner, and a movable clamping block (402) fixedly connected to the lower end of the spring guide rod (403). Each spring guide rod (403) is provided with a spring between the movable clamping block (402) and the clamping frame (401) on the outside.

6. The device for testing corrosion performance of ecological board according to claim 5, characterized in that: The movable clamping blocks (402) are arranged in a rectangular array in the clamping frame (401), and the corners on one side of the bottom of each movable clamping block (402) are rounded.

7. The device for testing corrosion performance of ecological board according to claim 1, characterized in that: The automatic fog scraping mechanism (5) comprises an upper sliding plate (501) and a lower sliding plate (502), the upper sliding plate (501) is slidably connected to the top front side of the PVC box cover (101), the lower sliding plate (502) is slidably connected to the inner front side of the PVC box cover (101), a magnet block (504) is fixedly connected to the upper sliding plate (501) and the lower sliding plate (502), and the two magnet blocks (504) are magnetically attracted to each other; a rubber scraping strip (503) is arranged on the upper end face of the lower sliding plate (502), and the rubber scraping strip (503) is in close contact with the inner side of the transparent window (102).

8. The device for testing corrosion performance of ecological board according to claim 7, characterized in that: The automatic fog scraping mechanism (5) further comprises a small motor (505), the small motor (505) is installed on the top of the PVC box cover (101), a reciprocating screw rod (506) is fixedly connected to the rotating shaft of the small motor (505), the right end of the reciprocating screw rod (506) is rotatably connected to the top of the PVC box cover (101), and a screw rod nut (507) is connected to the outer portion of the reciprocating screw rod (506) through a spiral groove, and the screw rod nut (507) is fixedly connected to the inner portion of the upper sliding plate (501).

9. The device for testing corrosion performance of ecological board according to claim 7, characterized in that: The outer portion of each magnet block (504) is sprayed with anticorrosive paint.

10. The device for testing corrosion performance of ecological board according to claim 8, characterized in that: A transparent corrosion-resistant protective cover (105) is installed on the top front side of the PVC box cover (101), and the transparent corrosion-resistant protective cover (105) is located outside the upper sliding plate (501), the small motor (505), the reciprocating screw rod (506) and the screw rod nut (507).

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