Corrosion resistance detection device for PFA film production

Abstract

The invention discloses a corrosion resistance detection device for PFA film production, and relates to the technical field of film corrosion detection. Comprising a box body, a mounting plate is fixedly connected to the interior of the box body, a mounting frame is fixedly connected to the upper end of the mounting plate, a rotating column is arranged on the inner top wall of the mounting frame in a penetrating mode, the rotating column is rotationally connected with the mounting frame, a rotating plate is fixedly connected to the lower end of the rotating column, and a plurality of corrosive liquid dropwise adding mechanisms are arranged on the rotating plate; the multiple corrosive liquid dropwise adding mechanisms are arranged in the circumferential direction of the rotating plate at equal intervals, a rotating mechanism connected with the rotating column is arranged on the mounting frame, a mounting groove is formed in the upper end of the mounting frame, a limiting mechanism is arranged in the mounting groove, and a partition plate located below the mounting plate is fixed in the box body. According to the invention, through movement of the PFA film, different corrosive liquids can carry out corrosion resistance detection on different positions of the PFA film in sequence, so that the corrosion resistance detection process is more efficient.

Description

Technical Field

[0001] The present invention relates to the technical field of film corrosion detection, and in particular to a corrosion resistance detection device for PFA film production. Background Art

[0002] PFA film, full name polytetrafluoroethylene copolymer, is a polymer film with excellent performance. PFA film has excellent chemical corrosion resistance and is resistant to almost all chemicals, including strong acids, strong alkalis, solvents and oxidants.

[0003] To ensure the quality of PFA films, both during production and in finished products, rigorous corrosion resistance testing is essential. However, currently used PFA film testing methods are mostly limited to independent testing of a single film sample or corrosive solution. This approach is unable to test multiple groups of PFA films or multiple corrosive solutions. Therefore, a corrosion resistance testing device for PFA film production is needed. Summary of the Invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a corrosion resistance detection device for PFA film production.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: The top end of the fixing plate is fixedly provided with a fixing frame, and the fixing frame is fixedly provided with a fixing frame. The fixing frame has a fixing frame which is fixedly provided with a fixing frame, and a fixing frame has a fixing frame which is fixedly provided with a fixing frame. The fixing frame has a fixing frame which is fixedly provided with a fixing frame.

[0006] As a further improvement of the present invention, the corrosive liquid dripping mechanism includes a liquid storage tank arranged above the rotating plate, an electromagnetic liquid outlet valve is provided on the side wall of the liquid storage tank, and a dripping tube is connected to the electromagnetic liquid outlet valve, and the dripping tube passes through the rotating plate downward.

[0007] As a further improvement of the present invention, the rotating mechanism includes a third motor fixedly mounted on the upper end of the mounting frame, the output shaft of the third motor passes downward through the mounting frame and is fixedly connected to the first gear, and a second gear is fixedly sleeved on the side wall of the rotating column, and the second gear is engaged with the first gear.

[0008] As a further improvement of the present invention, the limiting mechanism includes a limiting block arranged inside the movable groove, a spring is fixedly connected to the side wall of the limiting block, the end of the spring away from the limiting block is fixedly connected to the inner wall of the movable groove, and a plurality of limiting holes cooperating with the limiting block are provided on the side wall of the rotating column, and the plurality of limiting holes are arranged at equal intervals along the circumference of the rotating column.

[0009] As a further improvement of the present invention, the PFA film retracting mechanism includes a movable frame arranged on the inner side of the fixed frame, and mounting grooves are provided on the opposite side walls of the fixed frame, and movable structures are provided inside the two mounting grooves. The two movable structures are respectively connected to the opposite side walls of the movable frame, and a unwinding shaft and a rewinding shaft are rotatably connected to the inner wall of the movable frame. The unwinding shaft is sleeved with a PFA film, and a retaining ring is threadedly sleeved on the unwinding shaft. Two guide rods are rotatably connected to the inner wall of the movable frame, and the two guide rods are located between the unwinding shaft and the rewinding shaft. A clamping structure is provided inside the rewinding shaft, and a second motor is provided on the outer wall of the movable frame. The output shaft of the second motor passes through the movable frame and is fixedly connected to the end of the rewinding shaft.

[0010] As a further improvement of the present invention, the movable structure includes a first motor fixedly mounted on the inner wall of the mounting groove, the output shaft of the first motor is fixedly connected to a threaded rod, the end of the threaded rod away from the first motor is rotatably connected to the inner wall of the mounting groove, a threaded sleeve is threaded on the threaded rod, and the threaded sleeve is fixedly connected to the side wall of the movable frame.

[0011] As a further improvement of the present invention, the clamping structure includes a clamping plate arranged on the inner side of the winding shaft, and the upper end of the clamping plate is fixedly connected to an extrusion block and two tension springs. The two tension springs are symmetrically arranged on both sides of the extrusion block, and the end of the tension spring away from the clamping plate is fixedly connected to the inner wall of the winding shaft. An installation cavity is provided inside the winding shaft, and the end of the extrusion block away from the clamping plate passes through the inner wall of the winding shaft and extends to the inside of the installation cavity. A push rod is passed through the inner wall of the installation cavity, and the push rod is threadedly connected to the winding shaft.

[0012] As a further improvement of the present invention, a cover plate is hingedly connected to the top of the box body via a second hinge, and a second buckle lock is provided at the upper end of the cover plate.

[0013] As a further improvement of the present invention, a box door is hingedly connected to the side wall of the box body through a first hinge, and a first hasp lock is provided on the side wall of the box door.

[0014] Beneficial effects of the present invention: By setting up multiple corrosive liquid dropping mechanisms and adding multiple different corrosive liquids into multiple liquid storage tanks, the corrosion resistance test of the PFA film using different corrosive liquids can be completed in sequence, and the test effect is more comprehensive.

[0015] By setting up a rotating plate and a rotating mechanism, driving the rotating column to rotate, and driving the rotating plate to rotate through the rotating column, the rotating plate can drive the corrosion liquid dripping mechanism to rotate above the PFA film, realizing the sequential dripping test of different corrosion liquids, making the corrosion resistance detection process more efficient.

[0016] By setting up a PFA film retracting and unwinding mechanism, the PFA film can be pulled by the rotation of the reel, and then the PFA film can be moved, so that different corrosive liquids can be used to perform corrosion resistance testing on different positions of the PFA film in turn. In addition, the loading and unloading of the PFA film is convenient, making the corrosion resistance testing process of the PFA film more convenient.

[0017] The present invention enables different corrosive liquids to sequentially perform corrosion resistance tests on different positions of the PFA film by moving the PFA film, thereby making the corrosion resistance test process more efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic structural diagram of a corrosion resistance detection device for PFA film production proposed by the present invention; Figure 2 This is a structural diagram of a fixed frame and a PFA film retracting and extending mechanism of a corrosion resistance detection device for PFA film production proposed by the present invention; Figure 3 This is a schematic cross-sectional view of a reel and a clamping structure of a corrosion resistance testing device for PFA film production proposed by the present invention; Figure 4 for Figure 1 Enlarged view of point A in the middle; Figure 5 This is a schematic structural diagram of a limiting mechanism of a corrosion resistance detection device for PFA film production proposed by the present invention; Figure 6 This is a schematic diagram of the three-dimensional structure of the reel and clamping structure of a corrosion resistance detection device for PFA film production proposed by the present invention.

[0019] In the figure: 1 box body, 2 box door, 3 first hinge, 4 first buckle lock, 5 cover plate, 6 second hinge, 7 second buckle lock, 8 mounting frame, 9 liquid storage tank, 10 electromagnetic liquid outlet valve, 11 rotating plate, 12 drip tube, 13 mounting plate, 14 partition, 15 detection camera, 16 fixed frame, 17 movable frame, 18 unwinding shaft, 19 collecting tank, 20 guide rod, 21 rewinding shaft, 22 mounting slot, 23 first motor, 24 threaded rod, 25 threaded sleeve, 26 PFA film, 27 retaining ring, 28 second motor, 29 splint, 30 tension spring, 31 device cavity, 32 extrusion block, 33 ejector rod, 34 third motor, 35 first gear, 36 second gear, 37 rotating column, 38 movable slot, 39 spring, 40 limit block, 41 limit hole. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0021] Reference Figures 1-6 A corrosion resistance detection device for PFA film production includes a box body 1, a cover plate 5 is hingedly connected to the top of the box body 1 through a second hinge 6, and a second buckle lock 7 is provided at the upper end of the cover plate 5. A box door 2 is hingedly connected to the side wall of the box body 1 through a first hinge 3, and a first buckle lock 4 is provided on the side wall of the box door 2. A mounting plate 13 is fixedly connected to the interior of the box body 1, and a mounting frame 8 is fixedly connected to the upper end of the mounting plate 13. A rotating column 37 is passed through the inner top wall of the mounting frame 8, and the rotating column 37 is rotatably connected to the mounting frame 8. The lower end of the rotating column 37 is fixedly connected to a rotating plate 11, and a plurality of corrosive liquid dripping mechanisms are provided on the rotating plate 11. The plurality of corrosive liquid dripping mechanisms are arranged at equal intervals along the circumference of the rotating plate 11, and a rotating mechanism connected to the rotating column 37 is provided on the mounting frame 8. The mounting frame 8 A movable groove 38 is provided at the upper end, and a limiting mechanism is provided inside the movable groove 38. The limiting mechanism includes a limiting block 40 arranged inside the movable groove 38, and a spring 39 is fixedly connected to the side wall of the limiting block 40. The end of the spring 39 away from the limiting block 40 is fixedly connected to the inner wall of the movable groove 38. A plurality of limiting holes 41 cooperating with the limiting block 40 are provided on the side wall of the rotating column 37. The plurality of limiting holes 41 are arranged at equal intervals along the circumference of the rotating column 37. A partition 14 located below the mounting plate 13 is fixed inside the box body 1, and a detection camera 15 is installed at the lower end of the partition 14. A fixed frame 16 located below the partition 14 is fixed inside the box body 1, and a PFA film retracting and releasing mechanism is provided inside the fixed frame 16. A collecting tank 19 is provided on the inner bottom wall of the box body 1.

[0022] In the present invention, the corrosive liquid dripping mechanism includes a liquid storage tank 9 arranged above the rotating plate 11, an electromagnetic liquid outlet valve 10 is provided on the side wall of the liquid storage tank 9, and the electromagnetic liquid outlet valve 10 is connected to a dripping tube 12, which passes through the rotating plate 11 downward. The rotating mechanism includes a third motor 34 fixedly mounted on the upper end of the mounting frame 8, the output shaft of the third motor 34 passes through the mounting frame 8 downward and is fixedly connected to the first gear 35, and a second gear 36 is fixedly sleeved on the side wall of the rotating column 37, and the second gear 36 is engaged with the first gear 35.

[0023] The PFA film retracting and unfolding mechanism includes a movable frame 17 arranged on the inner side of the fixed frame 16, and mounting grooves 22 are provided on the opposite side walls of the fixed frame 16. The interiors of the two mounting grooves 22 are provided with a movable structure, and the movable structure includes a first motor 23 fixedly mounted on the inner wall of the mounting groove 22, and the output shaft of the first motor 23 is fixedly connected to a threaded rod 24, and the end of the threaded rod 24 away from the first motor 23 is rotatably connected to the inner wall of the mounting groove 22, and a threaded sleeve 25 is threadedly sleeved on the threaded rod 24, and the threaded sleeve 25 is fixedly connected to the side wall of the movable frame 17. The two movable structures are respectively connected to the movable frame 17 On the opposite side walls, the inner wall of the movable frame 17 is rotatably connected with a unwinding shaft 18 and a winding shaft 21, the unwinding shaft 18 is covered with a PFA film 26, and a retaining ring 27 is threadedly sleeved on the unwinding shaft 18, and the inner wall of the movable frame 17 is rotatably connected with two guide rods 20, the two guide rods 20 are located between the unwinding shaft 18 and the winding shaft 21, and a clamping structure is provided inside the winding shaft 21, and a second motor 28 is provided on the outer wall of the movable frame 17, and the output shaft of the second motor 28 passes through the movable frame 17 and is fixedly connected to the end of the winding shaft 21, and the guide rod 20 can support and guide the PFA film 26.

[0024] The clamping structure includes a clamping plate 29 arranged on the inner side of the winding shaft 21, and the upper end of the clamping plate 29 is fixedly connected to an extrusion block 32 and two tension springs 30. The two tension springs 30 are symmetrically arranged on both sides of the extrusion block 32. The end of the tension spring 30 away from the clamping plate 29 is fixedly connected to the inner wall of the winding shaft 21. A device cavity 31 is provided inside the winding shaft 21. The end of the extrusion block 32 away from the clamping plate 29 passes through the inner wall of the winding shaft 21 and extends to the interior of the device cavity 31. A push rod 33 is passed through the inner wall of the device cavity 31. The push rod 33 is threadedly connected to the winding shaft 21. One end of the PFA film 26 is placed inside the winding shaft 21. By rotating the push rod 33, the push rod 33 moves and squeezes the extrusion block 32. The movement of the extrusion block 32 can drive the clamping plate 29 to move downward, and the PFA film 26 is pressed tightly by the clamping plate 29.

[0025] When the present invention is used, the PFA film 26 is placed on the unwinding shaft 18, and the retaining ring 27 is screwed onto the unwinding shaft 18 to fix the PFA film 26. Then, one end of the PFA film 26 is placed inside the rewinding shaft 21, and the top rod 33 is rotated to move the top rod 33 and squeeze the extrusion block 32. The movement of the extrusion block 32 can drive the clamping plate 29 to move downward, and the clamping plate 29 can compress the PFA film 26. Then, the first motor 23 is started to drive the threaded rod 24 to rotate. Since the threaded rod 24 is threadedly connected to the threaded sleeve 25, the threaded sleeve 25 can be driven to move. The movement of the threaded sleeve 25 drives the movable frame 17 to move into the interior of the box body 1. Then, the box door 2 is closed and fixed by the first hasp lock 4. By opening the electromagnetic liquid outlet valve 10, the corrosive liquid in the liquid storage tank 9 can be dripped onto the PFA film 26 through the dripping pipe 12 to perform corrosion resistance testing, and the test results can be observed through the detection camera 15; Then, the second motor 28 is started to drive the winding shaft 21 to rotate, which can pull the PFA film 26 and thus move the PFA film 26. Then, the third motor 34 is started to drive the first gear 35 to rotate one circle. When the first gear 35 is engaged with the second gear 36, the rotating column 37 can be driven to rotate, and the rotating plate 11 can be driven to rotate by the rotating column 37. The rotating plate 11 can drive the etching liquid dripping mechanism to rotate to the top of the PFA film 26, so that different etching liquids can be used to perform corrosion resistance testing on different positions of the PFA film 26 in turn.

[0026] The above are only preferred specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A corrosion resistance detection device for PFA film production, comprising a box (1), characterized in that: The interior of the box (1) is fixedly connected to a mounting plate (13), the upper end of the mounting plate (13) is fixedly connected to a mounting frame (8), a rotating column (37) is provided on the inner top wall of the mounting frame (8), the rotating column (37) is rotatably connected to the mounting frame (8), the lower end of the rotating column (37) is fixedly connected to a rotating plate (11), a plurality of etching liquid dripping mechanisms are provided on the rotating plate (11), and the plurality of etching liquid dripping mechanisms are arranged at equal intervals along the circumference of the rotating plate (11), and a rotating column (37) is provided on the mounting frame (8) The mounting frame (8) is provided with a movable groove (38) at the upper end thereof, a limiting mechanism is provided inside the movable groove (38), a partition (14) located below the mounting plate (13) is fixed inside the box body (1), a detection camera (15) is installed at the lower end of the partition (14), a fixed frame (16) located below the partition (14) is fixed inside the box body (1), a PFA film retracting and releasing mechanism is provided inside the fixed frame (16), and a collecting groove (19) is provided on the inner bottom wall of the box body (1).

2. A corrosion resistance detection device for PFA film production according to claim 1, characterized in that: The etching liquid dripping mechanism comprises a liquid storage tank (9) arranged above the rotating plate (11), an electromagnetic liquid outlet valve (10) is provided on the side wall of the liquid storage tank (9), a liquid dripping tube (12) is connected to the electromagnetic liquid outlet valve (10), and the liquid dripping tube (12) passes through the rotating plate (11) downward.

3. A corrosion resistance detection device for PFA film production according to claim 1, characterized in that: The rotating mechanism comprises a third motor (34) fixedly mounted on the upper end of the mounting frame (8), an output shaft of the third motor (34) passing downward through the mounting frame (8) and fixedly connected to a first gear (35), a second gear (36) fixedly sleeved on the side wall of the rotating column (37), and the second gear (36) meshes with the first gear (35).

4. A corrosion resistance detection device for PFA film production according to claim 1, characterized in that: The limiting mechanism includes a limiting block (40) arranged inside the movable groove (38), a spring (39) is fixedly connected to the side wall of the limiting block (40), and one end of the spring (39) away from the limiting block (40) is fixedly connected to the inner wall of the movable groove (38), and a plurality of limiting holes (41) cooperating with the limiting block (40) are provided on the side wall of the rotating column (37), and the plurality of limiting holes (41) are arranged at equal intervals along the circumference of the rotating column (37).

5. The corrosion resistance detection device for PFA film production according to claim 1, characterized in that: The PFA film retracting mechanism comprises a movable frame (17) arranged inside a fixed frame (16), mounting grooves (22) are provided on opposite side walls of the fixed frame (16), movable structures are provided inside the two mounting grooves (22), and the two movable structures are respectively connected to opposite side walls of the movable frame (17). A reeling shaft (18) and a reeling shaft (21) are rotatably connected to the inner wall of the movable frame (17), and a PFA film (26) is mounted on the reeling shaft (18). ), a retaining ring (27) is threadedly sleeved on the unwinding shaft (18), two guide rods (20) are rotatably connected to the inner wall of the movable frame (17), the two guide rods (20) are located between the unwinding shaft (18) and the reeling shaft (21), a clamping structure is provided inside the reeling shaft (21), a second motor (28) is provided on the outer wall of the movable frame (17), and an output shaft of the second motor (28) passes through the movable frame (17) and is fixedly connected to the end of the reeling shaft (21).

6. A corrosion resistance detection device for PFA film production according to claim 5, characterized in that: The movable structure comprises a first motor (23) fixedly mounted on the inner wall of the mounting groove (22); an output shaft of the first motor (23) is fixedly connected to a threaded rod (24); an end of the threaded rod (24) away from the first motor (23) is rotatably connected to the inner wall of the mounting groove (22); a threaded sleeve (25) is threadedly sleeved on the threaded rod (24); and the threaded sleeve (25) is fixedly connected to the side wall of the movable frame (17).

7. A corrosion resistance detection device for PFA film production according to claim 5, characterized in that: The clamping structure includes a clamping plate (29) arranged on the inner side of the winding shaft (21), the upper end of the clamping plate (29) is fixedly connected to an extrusion block (32) and two tension springs (30), the two tension springs (30) are symmetrically arranged on both sides of the extrusion block (32), the end of the tension spring (30) away from the clamping plate (29) is fixedly connected to the inner wall of the winding shaft (21), the interior of the winding shaft (21) is provided with a device cavity (31), the end of the extrusion block (32) away from the clamping plate (29) passes through the inner wall of the winding shaft (21) and extends to the interior of the device cavity (31), the inner wall of the device cavity (31) is penetrated by a push rod (33), and the push rod (33) is threadedly connected to the winding shaft (21).

8. The corrosion resistance detection device for PFA film production according to claim 1, characterized in that: The top of the box body (1) is hingedly connected to a cover plate (5) via a second hinge (6), and the upper end of the cover plate (5) is provided with a second buckle lock (7).

9. The corrosion resistance detection device for PFA film production according to claim 1, characterized in that: A box door (2) is hingedly connected to the side wall of the box body (1) via a first hinge (3), and a first buckle lock (4) is provided on the side wall of the box door (2).

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