Shakeout abrasion tester for coating

Abstract

The utility model relates to the technical field of coating detection equipment, and discloses a shakeout wear resistance tester for coating, which comprises a support frame and a sample placing box, the front side of the support frame is fixedly connected with support plates, the inner walls of the two support plates are fixedly connected with guide pipes, the top ends of the guide pipes are communicated with a sand storage box, and the top ends of the guide pipes are communicated with the sample placing box. A screening plate is fixedly connected to the middle of the inner wall of the sand storage box, a servo motor is fixedly connected to the rear side of the supporting frame, the output end of the servo motor penetrates through the rear side of the supporting frame and is fixedly connected with a rotating shaft, and the front end of the rotating shaft penetrates through the rear side of the sand storage box and is fixedly connected with crushing blades. According to the utility model, the servo motor is started to drive the crushing blades to crush caked gravels, and the nozzle ensures that the gravels can uniformly fall on the surface of a sample through the built-in dispersion plate, so that the condition of material blockage in the test process is avoided, and the device has higher universality and practicability.

Description

Technical Field

[0001] This utility model relates to the technical field of coating testing equipment, and in particular to a sand abrasion tester for coatings. Background Technology

[0002] In the coating industry, the wear resistance of a coating is a crucial indicator, directly affecting its service life and application effect. To accurately assess the wear resistance of a coating, various wear test methods are used, the most common of which include rotary abrasion test, friction wheel method, and drop test. These methods can effectively simulate various wear conditions encountered by the coating during actual use, thus providing a scientific basis for improving coating performance and selecting materials.

[0003] A search revealed Chinese Patent Publication No. CN209656483U, which discloses a sand drop test device. The device includes a support frame and a funnel for collecting sand, located on the upper part of the support frame. A guide tube is located below the funnel and fixed to the support frame. Sand drop switches with different apertures are installed between the funnel and the guide tube. An extended sleeve is installed at the lower end of the guide tube, and a sample placement box is located below the extended sleeve. This invention enables the sand drop abrasion tester to meet the requirements specified in various standard methods. Furthermore, the sand drop switches and guide tube are made of 304 stainless steel with a hardness of approximately 300 HV. Surface treatment technology is used to enhance the wear resistance of the sand drop switches and guide tube, increasing the service life and capabilities of the device. It can also perform sand drop tests on anodic oxide films, electrophoretic composite films, and sprayed coatings using various standard methods. However, in actual use, the above-mentioned device has the problem that, due to the influence of weather and environment, the sand poured into the sand storage box will clump unevenly. This will not only cause blockage of the conduit during the experiment, but also affect the accuracy of the experiment. Therefore, a coating sand abrasion tester is proposed to solve the above problems. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a sand abrasion tester for coatings, which aims to improve the problem in the prior art where sand agglomerates unevenly due to weather and environmental influences, leading to duct blockage.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a sand abrasion tester for coatings, comprising a support frame and a sample placement box. Support plates are fixedly connected to the front side of the support frame. A conduit is fixedly connected to the inner wall of each of the two support plates. The top end of the conduit communicates with a sand storage box. A sieve plate is fixedly connected to the middle of the inner wall of the sand storage box. A servo motor is fixedly connected to the rear side of the support frame. The output end of the servo motor passes through the rear side of the support frame and is fixedly connected to a rotating shaft. The front end of the rotating shaft passes through the rear side of the sand storage box and is fixedly connected to a crushing blade. A nozzle is connected to the bottom end of the conduit. Multiple dispersing plates are fixedly connected to the inner wall of each nozzle. A flow-stopping valve is installed at the top of the outer wall of the conduit. An adjustment mechanism is provided inside the sample placement box.

[0006] The above technical solution involves pouring sand into a sand storage tank. The sand flows continuously through a sieve plate to the bottom of the tank, while clumps of sand remain at the top. A servo motor drives a rotating shaft to rotate, where the crushing blades on the shaft surface engage with the slots on the sieve plate to break up the clumps, ensuring uniformity. Finally, a flow control valve is opened, allowing the sand to flow down through a conduit. Simultaneously, a dispersion plate inside the nozzle disperses the sand, preventing it from pooling at a single point and improving the uniformity and accuracy of the coating test.

[0007] As a further description of the above technical solution:

[0008] The adjustment mechanism includes an electric push rod. The front side of the electric push rod is fixedly connected to the rear side of the support frame. One end of the electric push rod passes through the rear side of the support frame and is fixedly connected to a telescopic plate. The front end of the telescopic plate passes through the rear side of the sample placement box and is fixedly connected to a rotating component. A sample plate is rotatably connected to the top of the rotating component. Sliding rods are fixedly connected to the left and right sides of the sample plate. Sliding grooves are opened on the left and right sides of the inner wall of the sample placement box. The outer walls of the two sliding rods are slidably connected to the inner walls of the sliding grooves.

[0009] The above technical solution involves placing the coating on a sample plate for testing. By activating an electric push rod, the telescopic plate is driven to slide back and forth. Under the influence of the rotating component, the rear slide bar of the sample plate slides up and down in the sliding groove, thereby adjusting the angle of the sample plate and enabling testing operations at different angles.

[0010] As a further description of the above technical solution:

[0011] A top plate is fixedly connected to the rear top of the sample placement box, and a sealing cover is rotatably connected to the front top of the sample placement box.

[0012] The above technical solution achieves a sealed environment for the sample placement box by fitting the top plate and the sealing cover together, thus preventing dust from scattering.

[0013] As a further description of the above technical solution:

[0014] A handle is fixedly connected to the top of the sealing cover, and an anti-slip sleeve is fixedly connected to the outer wall of the handle.

[0015] The above technical solution allows for easy flipping of the sealing cap via a handle, while the anti-slip sleeve effectively increases friction.

[0016] As a further description of the above technical solution:

[0017] A controller is fixedly connected to the top right side of the top plate. The controller is electrically connected to the electric push rod, the servo motor and the shut-off valve.

[0018] The above technical solution allows for simple operation and control of the equipment throughout the entire system via a controller.

[0019] As a further description of the above technical solution:

[0020] An inclined flow plate is fixedly connected to the middle of the inner wall of the sample placement box, and a discharge port is connected to the front side of the sample placement box.

[0021] The above technical solution allows the flowing sand and gravel to be accurately collected through the discharge port via the inclined flow plate, facilitating subsequent continuous use.

[0022] As a further description of the above technical solution:

[0023] The bottom of the support frame is fixedly connected to a base, and support columns are fixedly connected to the four corners of the bottom of the base.

[0024] The above technical solution provides the following: the entire device is fixed and supported by a base, and the stability of the device is provided by multiple support columns.

[0025] As a further description of the above technical solution:

[0026] The left and right sides of the sample placement box are fixedly connected to connecting plates, and the top of the multiple connecting plates is provided with screw holes, and the inner walls of the multiple screw holes are threaded with bolts.

[0027] The above technical solution involves fixing the sample placement box to the base using a connecting plate to ensure the stability of the device.

[0028] This utility model has the following beneficial effects:

[0029] 1. In this utility model, after the sand is poured into the sand storage box, the sand will continuously flow through the sieve plate to the bottom of the sand storage box. At the same time, the clumps of sand will remain at the top of the sieve plate. The servo motor drives the crushing blades to crush the clumps of sand. The flow control valve is opened to allow the sand at the bottom of the sand storage box to flow downward through the conduit. The nozzle ensures that the sand can fall evenly on the sample surface through the built-in dispersion plate. This not only avoids material blockage during the test, but is also suitable for various types of coating tests, and has high versatility and practicality.

[0030] 2. In this utility model, when the electric push rod is activated to drive the telescopic plate to slide back and forth, it will cause the rear angle of the sample plate to slide up and down. After fixing the sample coating on the sample plate, the above operation can be quickly applied to the sample effect at different angles, thus improving the applicability. Attached Figure Description

[0031] Figure 1 This is a perspective view of a sand abrasion tester for coatings proposed in this utility model;

[0032] Figure 2 This is a side view of a sand abrasion tester for coatings proposed in this utility model;

[0033] Figure 3 This is a schematic diagram of the sand storage tank of a sand abrasion tester for coatings proposed in this utility model;

[0034] Figure 4 This is a cross-sectional view of the nozzle of a sand abrasion tester for coatings proposed in this utility model;

[0035] Figure 5 This is an exploded view of the sample placement box of a sand abrasion tester for coatings proposed in this utility model.

[0036] Legend:

[0037] 1. Support frame; 2. Adjustment mechanism; 201. Electric push rod; 202. Telescopic plate; 203. Rotating component; 204. Sample plate; 205. Slide rod; 206. Sliding groove; 3. Sample placement box; 4. Support plate; 5. Guide tube; 6. Sand storage box; 7. Sieve plate; 8. Servo motor; 9. Rotating shaft; 10. Crushing blade; 11. Nozzle; 12. Dispersion plate; 13. Cut-off valve; 14. Top plate; 15. Sealing cover; 16. Handle; 17. Anti-slip sleeve; 18. Controller; 19. Discharge port; 20. Inclined flow plate; 21. Connecting plate; 22. Screw hole; 23. Bolt; 24. Base; 25. Support column. Detailed Implementation

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0039] Reference Figure 1 , Figure 3 and Figure 4 This utility model provides an embodiment of a sand abrasion tester for coatings, comprising a support frame 1 and a sample placement box 3. Support plates 4 are fixedly connected to the front side of each support frame 1. Conduits 5 are fixedly connected to the inner walls of the two support plates 4. The top of each conduit 5 is connected to a sand storage box 6. The conduits 5 are made of transparent PVC material to facilitate observation of sand flow. A sieve plate 7 is fixedly connected to the middle of the inner wall of the sand storage box 6. After sand is poured into the sand storage box 6, it continuously flows through the sieve plate 7 into the sand storage box 6. At the bottom, the clumped sand will remain at the top of the sieve plate 7. A servo motor 8 is fixedly connected to the rear side of the support frame 1. The output end of the servo motor 8 passes through the rear side of the support frame 1 and is fixedly connected to the rotating shaft 9. The servo motor 8 is connected to the crushing blades 10 through the rotating shaft 9. By starting the servo motor 8, the crushing blades 10 are driven to rotate. The front end of the rotating shaft 9 passes through the rear side of the sand storage box 6 and is fixedly connected to the crushing blades 10. The crushing blades 10 and the slots on the sieve plate 7 are staggered, which can effectively crush the clumps. The gravel is crushed. The bottom end of the conduit 5 is connected to a nozzle 11. Multiple dispersion plates 12 are fixedly connected to the inner wall of the nozzle 11. The nozzle 11 is located above the sample stage. The nozzle 11 ensures that the sand can be evenly dripped onto the sample surface through the built-in dispersion plates 12. A shut-off valve 13 is installed at the top of the outer wall of the conduit 5. By controlling the shut-off valve 13 to open, the gravel at the bottom of the sand storage box 6 flows downward through the conduit 5. An adjustment mechanism 2 is set inside the sample placement box 3. A top plate 14 is fixedly connected to the rear side of the top of the sample placement box 3. A sealing cover 15 is rotatably connected to the front side of the top of the sample placement box 3. Before the test, the sealing cover 15 is rotated to clamp the conduit 5 and the nozzle 11 between them and the top plate 14. By sealing, the dust generated during the test is prevented from being scattered in the working environment. An inclined flow plate 20 is fixedly connected to the middle of the inner wall of the sample placement box 3. A discharge port 19 is connected to the front side of the sample placement box 3. The gravel after the test will flow out accurately from the discharge port 19 through the inclined flow plate 20.

[0040] Specifically, two support plates 4 are fixed to the front side of the support frame 1. A conduit 5 is fixed to the front side of the support plates 4 via the support plates 4. The top end of the conduit 5 is connected to the sand storage box 6. The conduit 5 is made of transparent PVC material, allowing the operator to clearly observe the flow of sand within the conduit. A sieve plate 7 is fixedly connected to the middle of the inner wall of the sand storage box 6. When sand is poured into the sand storage box 6, it flows continuously through the sieve plate 7, eventually reaching the bottom of the sand storage box 6. Meanwhile, any clumps of sand remain on the top of the sieve plate 7. The rear side of the support frame 1... A servo motor 8 is fixedly mounted, with its output end passing through the rear side of the support frame 1 and fixedly connected to a rotating shaft 9. The servo motor 8 is connected to the crushing blades 10 via this rotating shaft 9. When the servo motor 8 starts, it drives the crushing blades 10 to rotate. Simultaneously, the front end of the rotating shaft 9 passes through the rear side of the sand storage box 6 and is fixedly connected to the crushing blades 10. These crushing blades 10 interlock with the slots on the screen plate 7, thereby effectively crushing clumps of sand and gravel. The bottom end of the guide tube 5 is connected to a nozzle 11, which... Multiple dispersion plates 12 are fixedly connected to the inner wall. The nozzle 11 is located above the sample stage, and the built-in dispersion plates 12 ensure that the sand can fall evenly on the sample surface. A shut-off valve 13 is also installed at the top of the outer wall of the conduit 5. By controlling the opening and closing state of this shut-off valve 13, the sand at the bottom of the sand storage box 6 can flow downward through the conduit 5. A top plate 14 is fixed to the rear of the top of the sample placement box 3, while a sealing cover 15 is rotated on the front of the top. Before the test, the operator needs to rotate the sealing cover 15 to clamp the conduit 5 and the nozzle 11. The top plate 14 and the sample placement box 3 together form a sealed space, which can effectively prevent dust generated during the test from drifting into the working environment. In addition, a baffle plate 20 is fixed in the middle of the inner wall of the sample placement box 3. The inclined angle design of the baffle plate 20 can ensure that the sand and gravel after the test can flow smoothly through the baffle plate 20 to the discharge port 19. The front side of the sample placement box 3 is connected to the discharge port 19. The sand and gravel after the test will flow out accurately from this discharge port 19 through the baffle plate 20, which is convenient for operators to carry out subsequent cleaning and processing work.

[0041] Reference Figure 2 and Figure 5The adjustment mechanism 2 includes an electric push rod 201. The front side of the electric push rod 201 is fixedly connected to the rear side of the support frame 1. One end of the electric push rod 201 passes through the rear side of the support frame 1 and is fixedly connected to a telescopic plate 202. The front end of the telescopic plate 202 passes through the rear side of the sample placement box 3 and is fixedly connected to a rotating component 203. The top of the rotating component 203 is rotatably connected to a sample plate 204. The sample plate 204 and the telescopic plate 202 are rotatably connected through the rotating component 203. The telescopic plate 202 is slidably installed on the rear side of the sample placement box 3. The sample plate 204... Slide rods 205 are fixedly connected to both the left and right sides of the sample placement box 3. Sliding grooves 206 are opened on both the left and right sides of the inner wall of the sample placement box 3. At the same time, the rear two sides of the sample plate 204 are welded through slide rods 205. When the electric push rod 201 is activated to drive the telescopic plate 202 to slide back and forth, it will drive the rear angle of the sample plate 204 to slide up and down. After the sample coating is fixed on the sample plate 204, the above operation can be quickly applied to the sample effect at different angles, improving the applicability range. The outer walls of the two slide rods 205 are slidably connected to the inner wall of the sliding groove 206.

[0042] Specifically, one end of the electric push rod 201 passes through the rear side of the support frame 1 and is fixedly connected to the telescopic plate 202. The front end of the telescopic plate 202 also passes through the rear side of the sample placement box 3 and is fixedly connected to the rotating component 203. The top part of the rotating component 203 is designed to be rotatably connected to the sample plate 204, allowing the sample plate 204 to be rotatably connected to the telescopic plate 202 via the rotating component 203. The telescopic plate 202 is slidably mounted on the rear side of the sample placement box 3, ensuring its flexibility during operation. Slide rods 205 are fixedly installed on both the left and right sides of the sample plate 204, while the inner walls of the sample placement box 3 are... Sliding grooves 206 are provided to accommodate the sliding of sliding rods 205. In addition, the rear two sides of the sample plate 204 are welded and fixed by sliding rods 205. When the electric push rod 201 is activated, it drives the telescopic plate 202 to slide back and forth, thereby causing the rear angle of the sample plate 204 to slide up and down. In this way, once the sample coating is fixed on the sample plate 204, it can be quickly applied to the sample at different angles through the above operation, thereby significantly improving the applicability of the sample. At the same time, the outer walls of the two sliding rods 205 are designed to slide on the inner wall of the sliding grooves 206, ensuring the smooth operation of the entire adjustment mechanism 2.

[0043] Reference Figure 1 , Figure 2 and Figure 5A handle 16 is fixedly connected to the top of the sealing cover 15, and an anti-slip sleeve 17 is fixedly connected to the outer wall of the handle 16. A controller 18 is fixedly connected to the top right side of the top plate 14. The controller 18 is electrically connected to the electric push rod 201, the servo motor 8 and the shut-off valve 13 respectively. The controller 18 can conveniently control the operating equipment on the whole device. A base 24 is fixedly connected to the bottom of the support frame 1. The base 24 is used for the stable support of the whole device. The material is cast iron and the shape is cuboid. Support columns 25 are fixedly connected to the four corners of the bottom of the base 24. The support frame 25 is vertically fixed on the base 24. The height is adjustable. It is made of stainless steel and has good corrosion resistance. Connecting plates 21 are fixedly connected to the left and right sides of the sample placement box 3. The top of the multiple connecting plates 21 is provided with screw holes 22. The inner walls of the multiple screw holes 22 are threaded with bolts 23.

[0044] Specifically, the handle 16 allows users to easily lift the sealing cover 15. To further enhance the user experience, the outer wall of the handle 16 is connected to an anti-slip sleeve 17 to ensure good grip stability even in humid or oily environments. The controller 18 enables the operator to control the operating equipment on the entire device through simple operation, greatly improving the convenience and efficiency of operation. The base 24 not only provides stable support for the entire device, but its material is cast iron and its shape is rectangular, ensuring the stability and durability of the structure. The support column 25 is vertically fixed on the base 24, with adjustable height, and is made of stainless steel, which has good corrosion resistance, ensuring long-term stable operation of the device in various environments.

[0045] Working principle: Before the test, rotate the sealing cover 15 to clamp the guide tube 5 and nozzle 11 between the top plate 14 and the guide tube 5 to prevent dust generated during the test. After pouring sand into the sand storage box 6, the sand will continuously flow through the sieve plate 7 to the bottom of the sand storage box 6. At the same time, the clumps of sand will remain at the top of the sieve plate 7. By starting the servo motor 8, the crushing blades 10 are driven to rotate. The crushing blades 10 and the slots on the sieve plate 7 are interlaced, which can effectively crush the clumps of sand. By controlling the throttling valve 13 to open, the sand at the bottom of the sand storage box 6 flows downward through the guide tube 5. The nozzle 11 is located at the test... Above the sample stage, the nozzle 11 ensures that the sand falls evenly on the sample surface through the built-in dispersion plate 12, which not only avoids material blockage during the test, but also is applicable to various types of coating tests, with high versatility and practicality; and the sample plate 204 and the telescopic plate 202 are rotatably connected by the rotating part 203. When the electric push rod 201 is activated to drive the telescopic plate 202 to slide back and forth, it will drive the rear angle of the sample plate 204 to slide up and down, fixing the sample coating on the sample plate 204. Through the above operation, it can be quickly applied to the sample effect at different angles, improving the applicability range.

[0046] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A paint falling sand abrasion tester comprising a support frame (1) and a sample placement box (3), characterized in that: The front side of the support frame (1) is fixedly connected with a support plate (4), the inner wall of the two support plates (4) is fixedly connected with a conduit (5), the top end of the conduit (5) is communicated with a sand storage box (6), the inner wall of the sand storage box (6) is fixedly connected with a screening plate (7), the rear side of the support frame (1) is fixedly connected with a servo motor (8), the output end of the servo motor (8) penetrates through the rear side of the support frame (1) and is fixedly connected with a rotating shaft (9), the front end of the rotating shaft (9) penetrates through the rear side of the sand storage box (6) and is fixedly connected with a crushing blade (10), the bottom end of the conduit (5) is communicated with a nozzle (11), the inner wall of the nozzle (11) is fixedly connected with a plurality of dispersion plates (12), the outer wall top end of the conduit (5) is provided with a stop valve (13), and the inside of the sample placing box (3) is provided with an adjusting mechanism (2).

2. A falling sand abrasion tester for paints according to claim 1, characterized in that: The adjusting mechanism (2) comprises an electric push rod (201), the front side of the electric push rod (201) is fixedly connected to the rear side of the support frame (1), one end of the electric push rod (201) penetrates through the rear side of the support frame (1) and is fixedly connected with a telescopic plate (202), the front end of the telescopic plate (202) penetrates through the rear side of the sample placing box (3) and is fixedly connected with a rotating piece (203), the top of the rotating piece (203) is rotatably connected with a sample plate (204), the left and right sides of the sample plate (204) are fixedly connected with a slide rod (205), the inner wall left and right sides of the sample placing box (3) are provided with a sliding groove (206), and the outer walls of the two slide rods (205) are slidingly connected to the inner walls of the sliding grooves (206).

3. A falling sand abrasion tester for paints according to claim 1, characterized in that: The top rear side of the sample placing box (3) is fixedly connected with a top plate (14), and the top front side of the sample placing box (3) is rotatably connected with a sealing cover (15).

4. A falling sand abrasion tester for paints according to claim 3, characterised in that: The top of the sealing cover (15) is fixedly connected with a handle (16), and the outer wall of the handle (16) is fixedly connected with an anti-skid sleeve (17).

5. A falling sand abrasion tester for paints according to claim 3, characterized in that: The top right side of the top plate (14) is fixedly connected with a controller (18), and the controller (18) is electrically connected with the electric push rod (201), the servo motor (8) and the stop valve (13) respectively.

6. A mar abrasion tester for paints according to claim 1, characterized in that: The inner wall middle part of the sample placing box (3) is fixedly connected with an inclined flow plate (20), and the front side of the sample placing box (3) is communicated with a discharge port (19).

7. A mar abrasion tester for paints according to claim 1, characterized in that: The bottom of the support frame (1) is fixedly connected with a base (24), and the bottom of the base (24) is fixedly connected with a support column (25) at four corners.

8. A mar abrasion tester for paints according to claim 1, characterized in that: The left and right sides of the sample placing box (3) are fixedly connected with a connecting plate (21), a plurality of screw holes (22) are formed in the top of the connecting plate (21), and the inner walls of the plurality of screw holes (22) are threadedly connected with a bolt (23).

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