Salt mist corrosion resistance detection device for powder coating

Abstract

The utility model relates to a salt mist corrosion resistance detection device for powder coating, which relates to the technical field of powder coating detection and comprises a reaction barrel, a barrel opening is arranged at the top of the reaction barrel, a reaction plate is movably arranged in the reaction barrel, an air inlet pipe and an air outlet pipe are arranged on the reaction barrel in a communicated mode, and a purifier is arranged on the air outlet pipe. An air inlet one-way valve is arranged on the air inlet pipe, an air outlet one-way valve is arranged on the air outlet pipe, a pressure relief pipe is arranged on the reaction barrel in a communicating manner, a pressure relief one-way valve is arranged on the pressure relief pipe, a barrel cover is rotatably arranged at the top of the reaction barrel, a linkage assembly is arranged between the barrel cover and the reaction plate, and the linkage assembly is used for enabling the barrel cover to drive the reaction plate to move. A sealing assembly is arranged between the barrel cover and the reaction barrel and is used for sealing a gap between the reaction barrel and the barrel cover. The device has the advantages that the corrosion resistance of the powder coating can be conveniently detected, and the use convenience of the corrosion resistance detection device is improved.

Description

Technical Field

[0001] This utility model relates to the field of powder coating testing technology, and in particular to a salt spray corrosion resistance testing device for powder coatings. Background Technology

[0002] Powder coating is a type of coating composed of solid resin, pigments, fillers, and additives. As a new type of pollution-free coating, powder coating has been widely used for the decoration of metal and other surfaces. Therefore, corrosion resistance is an important testing indicator for powder coating during use.

[0003] The related technology includes a Chinese patent with authorization announcement number CN212722530U, which provides a powder coating surface corrosion resistance testing device. It includes a reaction barrel, a reaction plate is set inside the reaction barrel, a dividing line is set on the reaction plate, a barrel cover is detachably set on the top of the reaction barrel, an air inlet is set on one side of the reaction barrel, an air outlet is set on the other side of the reaction barrel, a purification pipe is connected to the air outlet, a roller is installed inside the purification pipe, a primary air purifier is set inside the roller, a primary air filter is set on one side of the primary air purifier, a medium-efficiency air purifier is set on one side of the primary air filter, and a medium-efficiency air filter is set on one side of the medium-efficiency air purifier. Open the lid of the container and evenly apply the powder coating to one side of the dividing line on the reaction plate. Then, close the lid tightly and introduce the corrosive mist into the reaction container. After the predetermined time, measure the distance between the powder coating and the dividing line to obtain the corrosion creep of the powder coating, thereby testing the corrosion resistance of the powder coating. After the experiment, close the air inlet and open the air outlet to allow the gas in the reaction container to be discharged through the purification pipe. The primary air purifier, primary air filter cotton, medium-efficiency air purifier, and medium-efficiency air filter cotton in the purification pipe filter and purify the gas.

[0004] In the process of developing this application, the inventors discovered at least the following problems with the technology: After the experiment is completed, the corrosive mist inside the reaction tank is allowed to enter the purification pipe by closing the air inlet and opening the air outlet. After all the corrosive mist inside the reaction tank is discharged from the reaction tank through the purification pipe, a vacuum environment is formed inside the reaction tank. When the reaction plate is removed under this state, the lid on the reaction tank needs to be opened first, and then the reaction plate needs to be removed from the reaction tank. Since the lid is tightly attached to the reaction tank under the action of negative pressure, the staff needs to apply greater force to separate the lid from the reaction tank, which makes it inconvenient for the staff to use. Utility Model Content

[0005] To facilitate the testing of the corrosion resistance of powder coatings and improve the convenience of using corrosion resistance testing devices, this application provides a salt spray corrosion resistance testing device for powder coatings.

[0006] The salt spray corrosion resistance testing device for powder coatings provided in this application adopts the following technical solution:

[0007] A salt spray corrosion resistance testing device for powder coatings includes a reaction tank with an opening at the top. A reaction plate is movably disposed inside the reaction tank. An inlet pipe and an outlet pipe are connected to the reaction tank. A purifier is installed on the outlet pipe. An inlet check valve is installed on the inlet pipe, and an outlet check valve is installed on the outlet pipe. A pressure relief pipe is connected to the reaction tank, and a pressure relief check valve is installed on the pressure relief pipe. A lid is rotatably disposed on the top of the reaction tank. A linkage assembly is provided between the lid and the reaction plate to move the lid and the reaction plate. A sealing assembly is provided between the lid and the reaction tank to seal the gap between the reaction tank and the lid.

[0008] By employing the above technical solution, when testing the corrosion resistance of powder coatings, the powder coating is first evenly applied to one side of the dividing line on the reaction plate. Then, the lid is closed, and the linkage assembly moves the reaction plate into the reaction tank. Next, a sealing assembly seals the gap between the reaction tank and the lid. After sealing, the outlet check valve and pressure relief check valve are closed, and the inlet check valve is opened, allowing corrosive salt spray to enter the reaction tank through the inlet pipe. After the corrosive salt spray has been in contact with the powder coating for a predetermined time, the inlet check valve is closed, and the outlet check valve and pressure relief check valve are opened, allowing the corrosive salt spray inside the reaction tank to dissipate. The salt spray is purified by the purifier in the exhaust pipe and then discharged. At the same time, outside air is allowed to enter the reaction tank through the pressure relief pipe, making it difficult for the lid to stick tightly to the reaction tank under negative pressure, thus making it easier for the staff to open the lid. After all the corrosive salt spray in the reaction tank has been purified and discharged, the lid is opened. The lid moves the reaction plate out of the reaction tank through a linkage component, making it easy for the staff to remove the reaction plate from the reaction tank. Then, the distance between the powder coating and the boundary line on the reaction plate is measured to obtain the corrosion creep of the powder coating, thereby testing the corrosion resistance of the powder coating. This achieves the effect of conveniently testing the corrosion resistance of powder coatings and improves the convenience of using corrosion resistance testing equipment.

[0009] Preferably, a filter cotton is installed inside the pressure relief pipe, and the filter cotton is located on the side of the pressure relief check valve away from the reaction vessel.

[0010] By adopting the above technical solution, the filter cotton filters dust and impurities in the air as outside air enters the reaction tank through the pressure relief pipe.

[0011] Preferably, the sealing assembly includes a sealing sleeve and a compression ring seat. The sealing sleeve is fitted onto the reaction vessel, and the inner ring wall of the sealing sleeve is used to fit against the vessel lid. A cavity is formed inside the sealing sleeve. The compression ring seat is fitted onto the vessel lid and is slidably connected to the vessel lid. A compression ring surface is formed on the inner ring wall of the compression ring seat, and the compression ring surface is used to abut against the outer ring wall of the sealing sleeve.

[0012] By adopting the above technical solution, after the lid is placed on top of the reaction vessel to seal the opening, a sealing sleeve is fitted onto the lid and the reaction vessel, covering the gap between them. Then, the extrusion ring seat is moved towards the reaction vessel, causing the extrusion ring surface to abut against the sealing sleeve. This causes the sealing sleeve to deform under force and fit tightly against the extrusion ring seat, lid, and reaction vessel, thus sealing the gap between them. This prevents salt mist from leaking out through the gap between the lid and the reaction vessel. When the pressure inside the reaction vessel is released and the lid is opened, the extrusion ring seat is moved away from the reaction vessel, separating it from the sealing sleeve. This reduces the friction between the sealing sleeve and the lid, facilitating the lid's flipping.

[0013] Preferably, the sealing assembly further includes a sealing cap, the bottom of which is connected to the top of the compression ring seat, a drive screw is rotatably mounted at the bottom end of the sealing cap, a threaded hole is formed through the barrel cover, the drive screw is inserted into the threaded hole, and the drive screw is threadedly connected to the threaded hole.

[0014] By adopting the above technical solution, when the extrusion ring seat extrudes the sealing sleeve, the drive screw is rotated, and the drive screw moves closer to the reaction vessel along the threaded hole, thereby causing the drive screw to move the extrusion ring seat towards the reaction vessel. At the same time, the extrusion ring seat and the drive screw rotate relative to each other, keeping the extrusion ring seat and the sealing sleeve coaxial. When the extrusion ring seat separates from the sealing sleeve, the drive screw is rotated, and the drive screw moves away from the reaction vessel along the threaded hole, thereby causing the drive screw to move the extrusion ring seat away from the reaction vessel. At this time, the extrusion ring seat and the drive screw rotate relative to each other.

[0015] Preferably, a drive shaft is provided through the sealing cover, the drive shaft is rotatably connected to the sealing cover, a drive handle is fixedly provided at the top of the drive shaft, the bottom of the drive shaft is fixedly connected to the top of the drive screw, and a threaded groove is provided on the top of the reaction tank for the bottom of the drive screw to be inserted.

[0016] By adopting the above technical solution, rotating the drive handle causes the drive shaft to rotate, which in turn causes the drive screw to rotate. The drive screw moves along the threaded hole. When the drive screw is inserted into the threaded groove, the lid and the reaction vessel are restricted by the drive screw and are not easy to move relative to each other, thereby achieving the effect of locking the lid and the reaction vessel.

[0017] Preferably, the linkage assembly includes a set of linkage arms and a linkage frame, the top of the linkage arm is rotatably connected to the bottom of the bucket lid, the opposite surface of the linkage arm is slidably connected to the linkage frame, and the reaction plate is placed on the linkage frame.

[0018] By adopting the above technical solution, when the barrel lid is flipped, the linkage arm rotates relative to the barrel lid, so that the linkage arm always remains in the vertical direction. At the same time, the linkage arm moves along the height and horizontal directions under the drive of the barrel lid. During the movement of the linkage arm, the linkage arm and the linkage frame move relative to each other in the horizontal direction, so that the linkage frame and the reaction barrel remain horizontal and stationary. At the same time, the linkage arm drives the linkage frame to move in the height direction, so that the linkage frame drives the reaction plate to move in the height direction.

[0019] Preferably, the inner wall of the reaction vessel is provided with several lifting grooves, and a lifting block is slidably arranged in the lifting grooves. The lifting block is fixedly connected to the linkage frame.

[0020] By adopting the above technical solution, the linkage frame is restricted by the lifting block in the lifting groove, so that the linkage frame and the reaction tank remain relatively stationary in the horizontal direction. As a result, during the process of the linkage arm driving the moving linkage frame, the linkage frame moves along the opening direction of the lifting groove, and the linkage arm moves in the horizontal direction of the linkage frame.

[0021] Preferably, the linkage frame has linkage grooves on the side facing the linkage arm, and linkage blocks are slidably arranged on the inner wall of the linkage grooves, and the linkage blocks are connected to the linkage arm.

[0022] By adopting the above technical solution, during the process of flipping the lid, the linkage arm drives the linkage block to move, the linkage block moves along the linkage groove, and at the same time the linkage block drives the linkage frame to move.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. By setting up a reaction tank, tank opening, reaction plate, air inlet pipe, air outlet pipe, purifier, air inlet check valve, air outlet check valve, pressure relief pipe, pressure relief check valve, tank lid, linkage assembly and sealing assembly, the effect of facilitating the testing of the corrosion resistance of powder coatings is achieved, and the convenience of using corrosion resistance testing device is improved.

[0025] 2. By setting a sealing sleeve, a compression ring seat, a cavity, and a compression ring surface, the gap between the sealing barrel cover and the reaction barrel is sealed, making it difficult for salt mist inside the reaction barrel to leak from the gap between the barrel cover and the reaction barrel;

[0026] 3. By setting up a linkage arm and linkage frame, the reaction plate can be moved while the barrel lid is flipped. Attached Figure Description

[0027] Figure 1 This is a cross-sectional view of a salt spray corrosion resistance testing device for powder coatings in an embodiment of this application.

[0028] Figure 2 This is a cross-sectional view showing the separation of the compression ring seat and the sealing sleeve in the embodiments of this application.

[0029] Figure 3 yes Figure 1 Enlarged view of part A in the middle.

[0030] Figure 4 This is a cross-sectional view illustrating the fit between the compression ring seat and the sealing sleeve in an embodiment of this application.

[0031] Figure 5 yes Figure 4 Enlarged view of section B.

[0032] Figure 6 This is a cross-sectional view illustrating the connection relationship between the linkage arm and the linkage frame in the embodiments of this application.

[0033] Explanation of reference numerals in the attached drawings: 1. Reaction vessel; 2. Vessel lid; 21. Vessel opening; 3. Inlet pipe; 31. Inlet check valve; 4. Outlet pipe; 41. Outlet check valve; 42. Purifier; 5. Pressure relief pipe; 51. Pressure relief check valve; 52. Filter cotton; 6. Reaction plate; 7. Linkage assembly; 71. Linkage arm; 711. Linkage block; 712. Linkage groove; 72. Linkage frame; 721. Lifting block; 722. Lifting groove; 8. Sealing assembly; 81. Sealing sleeve; 811. Cavity; 82. Extrusion ring seat; 821. Extrusion ring surface; 83. Sealing cover; 9. Drive handle; 91. Drive shaft; 92. Drive screw; 921. Threaded hole; 922. Threaded groove. Detailed Implementation

[0034] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0035] This application discloses a salt spray corrosion resistance testing device for powder coatings. (Refer to...) Figures 1 to 5The reaction vessel includes a reaction tank 1, inside which a reaction plate 6 is installed. An opening 21 is located at the top of the reaction tank 1, allowing the reaction plate 6 to move. An air inlet pipe 3, an air outlet pipe 4, and a pressure relief valve are connected to the reaction tank 1. An air inlet check valve 31 is installed on the air inlet pipe 3, an air outlet check valve 41 is installed on the air outlet pipe 4, and a pressure relief check valve 51 is installed on the pressure relief pipe 5. An air purifier 42 is installed inside the air outlet pipe 4, consisting of a roller, a primary air purifier 42, a primary air filter cotton 52, a medium-efficiency air purifier 42, and a medium-efficiency air filter cotton 52. Filter cotton 52 is installed inside the pressure relief pipe 5, located on the side away from the pressure relief check valve 51. As outside air enters the reaction tank 1 through the pressure relief pipe 5, the filter cotton 52 filters dust and impurities from the air. A lid 2 is hinged to the top of the reaction tank 1, covering the opening 21. A linkage assembly 7 is installed between the lid 2 and the reaction plate 6. The linkage assembly 7 is used to move the reaction plate 6 along with the lid 2. A sealing assembly 8 is installed between the lid 2 and the reaction vessel 1. The sealing assembly 8 is used to seal the gap between the reaction vessel 1 and the lid 2. When testing the corrosion resistance of the powder coating, the lid 2 is opened, and the linkage assembly 7 moves the reaction plate 6 out of the reaction vessel 1. Then, the powder coating is evenly applied to one side of the dividing line on the reaction plate 6. Afterward, the lid 2 is closed, and the linkage assembly 7 moves the reaction plate 6 back into the reaction vessel 1. After the sealing assembly 8 seals the gap between the reaction vessel 1 and the lid 2, the exhaust check valve 41 and the pressure relief check valve 51 are closed, and the inlet check valve 31 is opened, allowing corrosive salt spray to enter the reaction vessel 1 through the inlet pipe 3, thus preventing the corrosive salt spray from leaking into the external environment. After the corrosive salt spray has been in contact with the powder coating for a predetermined time, the inlet check valve 31 is closed and the outlet check valve 41 is opened, allowing the corrosive salt spray in the reaction tank 1 to be purified and discharged by the purifier 42 in the outlet pipe 4. Once all the corrosive salt spray in the reaction tank 1 has been purified and discharged, the tank lid 2 is opened, and the lid 2 moves the reaction plate 6 out of the reaction tank 1 via the linkage assembly 7. The distance between the powder coating and the boundary line on the reaction plate 6 is then measured to obtain the corrosion creep of the powder coating, thereby testing the corrosion resistance of the powder coating. During the gas discharge process in the reaction tank 1, the pressure relief check valve 51 is opened, allowing outside air to enter the reaction tank 1 through the pressure relief pipe 5. This prevents the lid 2 from sticking tightly to the reaction tank 1 under negative pressure, making it easier for operators to open the lid 2 and improving the convenience of using the corrosion resistance testing device. When the operator closes the lid 2 to seal the opening 21, the reaction plate 6 is simultaneously placed into the reaction tank 1; when the operator opens the lid 2 to expose the opening 21, the reaction plate 6 is simultaneously moved out of the reaction tank 1. This simplifies the operating procedures for staff and makes it easier to test the corrosion resistance of powder coatings.

[0036] To prevent salt mist from leaking out of the gap between the lid 2 and the reaction vessel 1, refer to Figures 1 to 5The sealing assembly 8 includes a sealing sleeve 81, a compression ring seat 82, and a sealing cap 83. The sealing cap 83 is located on the side of the lid 2 away from the reaction vessel 1, and the top of the compression ring seat 82 is integrally formed with the bottom of the sealing cap 83. The compression ring seat 82 is fitted onto the lid 2, and the inner ring wall of the compression ring seat 82 has a compression ring surface 821 for abutting against the outer ring wall of the sealing sleeve 81. The sealing sleeve 81 is fitted onto the reaction vessel 1, and a cavity 811 is formed inside the sealing sleeve 81, and the inner ring wall of the sealing sleeve 81 is for fitting against the lid 2. When the lid 2 is placed on top of the reaction vessel 1 to close the opening 21, the sealing sleeve 81 is fitted onto both the lid 2 and the reaction vessel 1, and the sealing sleeve 81 covers the gap between the lid 2 and the reaction vessel 1. Then, the sealing cap 83 is moved towards the barrel lid 2. The sealing cap 83 drives the extrusion ring seat 82 towards the reaction vessel 1, so that the extrusion ring surface 821 of the extrusion ring seat 82 abuts against the sealing sleeve 81. As a result, the sealing sleeve 81 deforms under force and fits tightly between the extrusion ring seat 82, the barrel lid 2, and the reaction vessel 1, sealing the gap between the barrel lid 2 and the reaction vessel 1, making it difficult for salt mist inside the reaction vessel 1 to leak from the gap between the barrel lid 2 and the reaction vessel 1. When the pressure inside the reaction vessel 1 is completely released and the barrel lid 2 is opened, the sealing cap 83 is moved away from the barrel lid 2. The sealing cap 83 drives the extrusion ring seat 82 to separate from the sealing sleeve 81, thereby reducing the friction between the sealing sleeve 81 and the barrel lid 2, making it easier for the barrel lid 2 to flip over.

[0037] In order to allow relative movement between the sealing cap 83 and the barrel lid 2, refer to Figures 1 to 5 A drive shaft 91 is installed through the sealing cover 83, and the drive shaft 91 is rotatably connected to the sealing cover 83. A drive handle 9 is welded to the top of the drive shaft 91, and the top of the drive screw 92 is welded to the bottom of the drive shaft 91. A threaded hole 921 is opened through the barrel cover 2, and the drive screw 92 is inserted into the threaded hole 921 and threadedly connected to the threaded hole 921. A threaded groove 922 is opened on the top of the reaction barrel 1, and the bottom end of the drive screw 92 is inserted into the threaded groove 922. Rotating the drive handle 9 causes the drive shaft 91 to rotate, which in turn causes the drive screw 92 to rotate, and the drive screw 92 moves along the threaded hole 921. The movement of the drive screw 92 causes the drive shaft 91 to move, which in turn causes the sealing cover 83 to move, thereby causing relative movement between the sealing cover 83 and the barrel cover 2. When the drive screw 92 is inserted into the threaded groove 922, the barrel cover 2 and the reaction barrel 1 are restricted by the drive screw 92 and are not easy to move relative to each other, thereby achieving the effect of locking the barrel cover 2 and the reaction barrel 1.

[0038] In order for the lid 2 to move the reaction plate 6, refer to Figures 1 to 6The linkage assembly 7 includes a set of linkage arms 71 and linkage frame 72. The top of the linkage arm 71 is rotatably connected to the bottom of the barrel cover 2, and the reaction plate 6 is placed on the linkage frame 72. Linkage blocks 711 are installed on the opposite side of the linkage arms 71. Linkage slots 712 are opened on the side of the linkage frame 72 facing the linkage arms 71, and the linkage blocks 711 are slidably disposed in the linkage slots 712. Several lifting slots 722 are opened on the inner wall of the reaction barrel 1, and lifting blocks 721 are slidably disposed in the lifting slots 722 and welded to the linkage frame 72. The linkage frame 72 is restricted by the lifting blocks 721 in the lifting slots 722, so that the linkage frame 72 and the reaction barrel 1 remain relatively stationary in the horizontal direction. Thus, when the linkage arm 71 drives the moving linkage frame 72 to move, the linkage frame 72 moves along the opening direction of the lifting slots 722, and the linkage arm 71 moves in the horizontal direction of the linkage frame 72. When the lid 2 flips over, the linkage arm 71 rotates relative to the lid 2, thus keeping the linkage arm 71 vertical. Simultaneously, the linkage arm 71 moves both vertically and horizontally under the influence of the lid 2. During this movement, the linkage arm 71 and the linkage frame 72 move horizontally relative to each other via the linkage block 711 and the linkage groove 712, keeping the linkage frame 72 horizontally stationary relative to the reaction vessel 1. At the same time, the linkage arm 71 drives the linkage frame 72 to move vertically, causing the linkage frame 72 to move the reaction plate vertically.

[0039] The implementation principle of the salt spray corrosion resistance testing device for powder coatings in this application embodiment is as follows: When testing the corrosion resistance of powder coatings, the lid 2 is opened and the reaction plate 6 is removed from the reaction tank 1. Then, the powder coating is evenly applied to one side of the dividing line on the reaction plate 6. After that, the lid 2 is closed and the reaction plate 6 is moved back into the reaction tank 1. After the sealing sleeve 81 seals the gap between the reaction tank 1 and the lid 2, the exhaust check valve 41 and the pressure relief check valve 51 are closed, and the inlet check valve 31 is opened, allowing the corrosive salt spray to enter the reaction tank 1 through the inlet pipe 3, thus preventing the corrosive salt spray from leaking into the external environment. After the corrosive salt spray has been in contact with the powder coating for a predetermined time, the inlet check valve 31 is closed and the exhaust check valve 41 is opened, allowing the corrosive salt spray in the reaction tank 1 to be purified and discharged by the purifier 42 in the exhaust pipe 4. After all the corrosive salt spray in the reaction tank 1 has been purified and discharged from the reaction tank 1, the lid 2 is opened and the reaction plate 6 is removed from the reaction tank 1. The distance between the powder coating and the boundary line on the reaction plate 6 is then measured to obtain the corrosion creep of the powder coating, thereby testing its corrosion resistance. During the gas discharge process inside the reaction tank 1, the pressure relief check valve 51 opens, allowing outside air to enter the reaction tank 1 through the pressure relief pipe 5. This prevents the lid 2 from sticking tightly to the reaction tank 1 under negative pressure, making it easier for operators to open the lid 2 and improving the convenience of using the corrosion resistance testing device. When the operator closes the lid 2 to seal the opening 21, the reaction plate 6 is simultaneously placed inside the reaction tank 1; when the operator opens the lid 2 to expose the opening 21, the reaction plate 6 is simultaneously removed from the reaction tank 1. This simplifies the operator's steps and facilitates the testing of the powder coating's corrosion resistance.

[0040] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A salt spray corrosion resistance testing device for powder coatings, comprising a reaction tank (1), wherein the top of the reaction tank (1) has a tank opening (21), a reaction plate (6) is movably arranged inside the reaction tank (1), an air inlet pipe (3) and an air outlet pipe (4) are connected to the reaction tank (1), and a purifier (42) is arranged on the air outlet pipe (4), characterized in that: An intake check valve (31) is provided on the intake pipe (3), an outlet check valve (41) is provided on the outlet pipe (4), a pressure relief pipe (5) is connected to the reaction tank (1), a pressure relief check valve (51) is provided on the pressure relief pipe (5), a lid (2) is rotatably provided on the top of the reaction tank (1), a linkage assembly (7) is provided between the lid (2) and the reaction plate (6), the linkage assembly (7) is used to make the lid (2) drive the reaction plate (6) to move, a sealing assembly (8) is provided between the lid (2) and the reaction tank (1), the sealing assembly (8) is used to seal the gap between the reaction tank (1) and the lid (2).

2. The salt spray corrosion resistance testing device for powder coatings according to claim 1, characterized in that: The pressure relief pipe (5) is equipped with a filter cotton (52), which is located on the side of the pressure relief check valve (51) away from the reaction vessel (1).

3. The salt spray corrosion resistance testing device for powder coatings according to claim 1, characterized in that: The sealing assembly (8) includes a sealing sleeve (81) and a compression ring seat (82). The sealing sleeve (81) is fitted onto the reaction vessel (1). The inner ring wall of the sealing sleeve (81) is used to fit against the lid (2). A cavity (811) is opened inside the sealing sleeve (81). The compression ring seat (82) is fitted onto the lid (2). The compression ring seat (82) is slidably connected to the lid (2). A compression ring surface (821) is opened on the inner ring wall of the compression ring seat (82). The compression ring surface (821) is used to abut against the outer ring wall of the sealing sleeve (81).

4. The salt spray corrosion resistance testing device for powder coatings according to claim 3, characterized in that: The sealing assembly (8) also includes a sealing cap (83), the bottom of which is connected to the top of the compression ring seat (82). A drive screw (92) is rotatably installed at the bottom of the sealing cap (83). A threaded hole (921) is opened through the barrel cover (2). The drive screw (92) is inserted into the threaded hole (921) and is threadedly connected to the threaded hole (921).

5. The salt spray corrosion resistance testing device for powder coatings according to claim 4, characterized in that: A drive shaft (91) is provided through the sealing cover (83). The drive shaft (91) is rotatably connected to the sealing cover (83). A drive handle (9) is fixedly provided at the top of the drive shaft (91). The bottom end of the drive shaft (91) is fixedly connected to the top end of the drive screw (92). A threaded groove (922) is provided at the top of the reaction tank (1). The threaded groove (922) is used for the bottom end of the drive screw (92) to be inserted.

6. The salt spray corrosion resistance testing device for powder coatings according to claim 1, characterized in that: The linkage assembly (7) includes a set of linkage arms (71) and linkage frame (72). The top of the linkage arm (71) is rotatably connected to the bottom of the bucket lid (2), and the opposite side of the linkage arm (71) is slidably connected to the linkage frame (72). The reaction plate (6) is placed on the linkage frame (72).

7. The salt spray corrosion resistance testing device for powder coatings according to claim 6, characterized in that: The inner wall of the reaction tank (1) has several lifting grooves (722), and a lifting block (721) is slidably arranged in the lifting groove (722). The lifting block (721) is fixedly connected to the linkage frame (72).

8. The salt spray corrosion resistance testing device for powder coatings according to claim 6, characterized in that: The linkage frame (72) has linkage grooves (712) on the side facing the linkage arm (71), and linkage blocks (711) are slidably arranged on the inner wall of the linkage groove (712), and the linkage blocks (711) are connected to the linkage arm (71).

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