A device for testing the performance of rubber pads for sealing mineral equipment

Abstract

The application discloses a kind of rubber pad performance testing devices for mineral equipment sealing, it is related to rubber pad performance testing technical field, including: rack, the top of the rack is fixedly connected with two first connecting plates, one fixed seat is fixedly connected between two first connecting plates, the top of the fixed seat is provided with one sealing rubber pad and two connecting blocks;Stretching mechanism, the stretching mechanism is arranged at the top of the fixed seat, for the stretching test of the sealing rubber pad;The present application is provided with gradient compactor, so that in the whole process of pulling the sealing rubber pad, the sealing rubber pad is first thinned from the center area, then gradually thinned on both sides, so as to realize the gradient transmission of stress, so as to avoid the clamping edge to be thinned at the beginning, so as to cause the clamping edge to be broken, so as to affect the accuracy of the tensile test, so as to improve the overall practicability of the device.

Description

Technical Field

[0001] This invention relates to the field of rubber gasket performance testing technology, specifically a performance testing device for rubber gaskets used in sealing mineral equipment. Background Technology

[0002] Mining equipment gaskets are rubber products used in the mineral processing industry to seal the connection points of equipment. They must withstand high-intensity vibration processes such as ore feeding, conveying, screening, dewatering, desliming, crushing, and grinding. They possess good elasticity, wear resistance, fatigue resistance, and certain mechanical properties to ensure the reliability of the seal under continuous vibration and prevent leakage of slurry and dust. During the operation of mining equipment, gaskets must withstand repeated impacts, friction, and compression from vibration. Their sealing performance directly affects the operational stability of the equipment; therefore, specialized equipment is required for their testing.

[0003] Existing gasket performance testing devices typically use two grippers to hold the gasket at both ends, and then a drive mechanism moves the grippers in opposite directions to perform a tensile test. However, this testing method allows the test section (the ungripped middle area) to deform freely during stretching, resulting in a uniformly thinner thickness. But the sample in the gripped area is constrained by the clamps and cannot shrink freely, causing the "grip edge" (the side closest to the test section) to become a "stress concentration area." The axial tensile force forces the material to flow towards the test section, ultimately making this area thinner than the test section, leading to breakage at the gripping edge. To address this issue, we designed a performance testing device for rubber gaskets used in mineral equipment sealing devices. Summary of the Invention

[0004] The purpose of this invention is to solve the problem that in the implementation of existing sealing rubber gasket performance testing devices, the thickness of the test end becomes uniformly thinner, while the sample in the clamping area is constrained by the clamp and cannot shrink freely, resulting in the thickness of the clamping area being thinner than the test section, thus causing the clamping edge to break. The invention provides a performance testing device for sealing rubber gaskets in mineral equipment.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a performance testing device for sealing rubber gaskets in mineral equipment, comprising: a frame, wherein two first connecting plates are fixedly connected to the top of the frame, and a fixed seat is fixedly connected between the two first connecting plates; a sealing rubber gasket and two connecting blocks are disposed on the top of the fixed seat; a tensioning mechanism, disposed on the top of the fixed seat, for performing a tension test on the sealing rubber gasket; a gradient clamping device, disposed on the top of the two connecting blocks, for clamping the sealing rubber gasket; and a tensioning mechanism, disposed on the top of the two first connecting plates. The inner side of the connecting plate is used to tighten the sealing rubber gasket; the gradient clamping device includes an L-shaped plate fixedly connected to the top of the connecting block, a hydraulic cylinder is installed on the top of the L-shaped plate, the output end of the hydraulic cylinder passes through the inner side of the L-shaped plate and is fixedly connected to a connecting rod, the bottom of the connecting rod is fixedly connected to a second connecting plate, the bottom of the second connecting plate is fixedly connected to a first connecting column, the inner side of the L-shaped plate is fixedly connected to a first rectangular plate, the bottom of the first connecting column and the top of the first rectangular plate are respectively fixedly connected to a first clamping plate, and the sealing rubber gasket is placed on the top of one of the first clamping plates.

[0006] As a further embodiment of the present invention: the tensioning mechanism includes a limiting groove formed inside the fixed seat, two first sliding blocks are slidably connected to the inner side of the limiting groove, and the two first sliding blocks are respectively fixedly connected to one of the connecting blocks. A rotating rod is rotatably connected between the two first connecting plates, a drive motor is installed on one side of one of the first connecting plates, and the output end of the drive motor is fixedly connected to the rotating rod. The outer wall of the rotating rod is provided with a positive thread and a negative thread, and the two first sliding blocks are respectively threaded to the positive thread and the negative thread of the rotating rod.

[0007] As a further embodiment of the present invention: the gradient clamping device further includes three second sliding blocks fixedly connected to the bottom of the second connecting plate, each second sliding block having a cylinder slidably connected to its bottom, and a first compression spring installed between the second connecting plate and each cylinder, wherein the elastic coefficients of the three first compression springs decrease sequentially from the direction closer to the first clamping plate to the direction farther away from the first clamping plate, and three sets of second clamping plates are provided between the cylinder and the first rectangular plate, each set having two second clamping plates, one second clamping plate being fixedly connected to the cylinder, and the other second clamping plate being fixedly connected to the first rectangular plate.

[0008] As a further embodiment of the present invention: the tensioning mechanism includes three first rectangular slots formed on the inner side of the second connecting plate, and a third sliding block is slidably connected to the inner side of each of the three first rectangular slots. A second compression spring is installed between the third sliding block and the inner side of the first rectangular slot.

[0009] As a further embodiment of the present invention: the tensioning mechanism further includes a second rectangular groove formed inside the third sliding block, a second connecting post slidably connected to the inner side of the second rectangular groove, a third compression spring installed between the second connecting post and the inner side of the second rectangular groove, three sets of fourth rectangular grooves formed at the top of the first rectangular plate, two in each set of the fourth rectangular grooves, a first connecting strip slidably connected to the inner side of each fourth rectangular groove, two tensioning plates formed at the top of each set of the first connecting strips, one tensioning plate being fixedly connected to the bottom of the second connecting post, and the other tensioning plate being fixedly connected to the top of the two first connecting strips, a limit rod being fixedly connected to the top of one tensioning plate, and the other tensioning plate being slidably connected to the outer wall of the limit rod, and a straightening component being provided on one side of the third sliding block.

[0010] As a further embodiment of the present invention: the straightening assembly includes two second rectangular plates fixedly connected to both sides of the third sliding block, one end of each of the two second rectangular plates is fixedly connected to a spherical rod, one end of the spherical rod is configured as a spherical surface, three sets of second connecting strips are fixedly connected to the top inner side of the L-shaped plate, each set of the second connecting strips has two strips, the bottom of each second connecting strip is fixedly connected to a driving block, one side of the driving block is provided with a first inclined surface, and one side of the sealing rubber pad is provided with an abutting unit.

[0011] As a further embodiment of the present invention: the abutting unit includes a third connecting strip fixedly connected to the inner side of the first connecting plate, and the third connecting strip extends through to the inner side of the L-shaped plate and is fixedly connected to the third connecting plate. The inner side of the third connecting plate is provided with three third rectangular grooves, and a fixing strip is slidably connected to the inner side of each of the three third rectangular grooves. A fourth compression spring is installed between the fixing strip and the inner side of the third rectangular groove. One end of each fixing strip is fixedly connected to a pressure plate, and the three pressure plates are respectively arranged on one side of a set of tensioning plates.

[0012] As a further embodiment of the present invention: the abutting unit further includes a third rectangular plate fixedly connected to the bottom of the pressing plate, a rotating wheel rotatably connected to the inner side of the third rectangular plate, a fourth connecting plate fixedly connected to the top of the first rectangular plate, and three limiting blocks installed on the top of the fourth connecting plate, each of the three limiting blocks having a second inclined surface on one side.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. By setting up a gradient clamping device, the sealing rubber gasket first thins from the central area and then gradually thins from both sides during the entire tensile test of the sealing rubber gasket. This achieves the gradient transfer of stress and avoids the clamping edge from thinning at the beginning, which would cause the clamping edge to break and affect the accuracy of the tensile test. This improves the overall practicality of the device.

[0015] 2. By setting up a tensioning mechanism, the tensioning plate is moved in the opposite direction of the second connecting strip, thereby pulling the sealing rubber gasket and tightening it. This eliminates the initial wrinkles and slack of the sealing rubber gasket, ensuring that the initial state of the test is uniform and consistent. At the same time, it optimizes the lateral force distribution of the sealing rubber gasket and reduces the interference of "edge shrinkage" during longitudinal tension, thereby improving the accuracy of the test.

[0016] 3. By setting up a stop unit, the first set of tensioning plates can adaptively and continuously compress the sealing rubber gasket. In the second stage, the first rotating wheel moves to the bottom of the second inclined plane, and the second rotating wheel moves to the top of the second inclined plane. This allows the three sets of tensioning plates to adapt to different stages, thereby continuously compressing the sealing rubber gasket and ensuring that the sealing rubber gasket remains in a stable tension state during the test, avoiding loosening or wrinkling, thus ensuring the stability of the test and improving the overall practicality of the device. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention;

[0018] Figure 2 This is a cross-sectional view of the present invention;

[0019] Figure 3 This is a partial structural diagram of the gradient clamping device of the present invention;

[0020] Figure 4 This is a cross-sectional view of the tensioning mechanism of the present invention;

[0021] Figure 5 This is a partial structural diagram of the tensioning mechanism of the present invention;

[0022] Figure 6 This is a schematic diagram of the driving block structure of the present invention;

[0023] Figure 7 This is a schematic diagram of the abutment unit structure of the present invention;

[0024] Figure 8 For the present invention Figure 7 Enlarged view of point A in the middle;

[0025] Figure 9 This is a schematic diagram of the fourth connecting plate structure of the present invention;

[0026] Figure 10 This is a schematic diagram of the third connecting plate structure of the present invention;

[0027] Figure 11 This is a schematic diagram illustrating the process of the tensioning plate gradually tightening the sealing rubber gasket according to the present invention;

[0028] Figure 12 This is a schematic diagram of the limiting rod structure of the present invention.

[0029] In the diagram: 1. Frame; 2. First connecting plate; 3. Fixed base; 4. Limiting groove; 5. First sliding block; 6. Connecting block; 7. L-shaped plate; 8. Drive motor; 9. Rotating rod; 10. First rectangular plate; 11. Hydraulic cylinder; 12. Connecting rod; 13. Second connecting plate; 14. Sealing rubber gasket; 15. Cylinder; 16. Second sliding block; 17. First compression spring; 18. First connecting column; 19. First clamping plate; 20. Second clamping plate; 21. First rectangular groove; 22. Third sliding block; 23. Second compression spring; 24. ... 25. Second rectangular groove; 26. Third compression spring; 27. Tensioning plate; 28. First connecting strip; 29. ​​Second connecting strip; 30. Drive block; 31. First inclined surface; 32. Second rectangular plate; 33. Ball rod; 34. Third connecting strip; 35. Third connecting plate; 36. Fixing strip; 37. Pressing plate; 38. Third rectangular groove; 39. Fourth compression spring; 40. Fourth connecting plate; 41. Limiting block; 42. Second inclined surface; 43. Third rectangular plate; 44. Rotating wheel; 45. Fourth rectangular groove; 46. Limiting rod. Detailed Implementation

[0030] 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 embodiments of the present invention, and not all embodiments. Based on the 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.

[0031] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this invention, it should be noted that unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," and "set up" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. The following describes embodiments of the invention based on its overall structure.

[0032] Please see Figures 1-12This embodiment provides a performance testing device for sealing rubber gaskets in mineral equipment; it includes: a frame 1, with two first connecting plates 2 fixedly connected to the top of the frame 1, and a fixed seat 3 fixedly connected between the two first connecting plates 2. A sealing rubber gasket 14 and two connecting blocks 6 are disposed on the top of the fixed seat 3; a tensioning mechanism disposed on the top of the fixed seat 3 for performing a tensile test on the sealing rubber gasket 14; a gradient clamping device disposed on the top of the two connecting blocks 6 for clamping the sealing rubber gasket 14; and a tensioning mechanism disposed on the inner side of the two first connecting plates 2. Used for tightening the sealing rubber gasket 14; the gradient clamp includes an L-shaped plate 7 fixedly connected to the top of the connecting block 6, a hydraulic cylinder 11 mounted on the top of the L-shaped plate 7, the output end of the hydraulic cylinder 11 extending through to the inner side of the L-shaped plate 7 and fixedly connected to a connecting rod 12, the bottom of the connecting rod 12 fixedly connected to a second connecting plate 13, the bottom of the second connecting plate 13 fixedly connected to a first connecting post 18, the inner side of the L-shaped plate 7 fixedly connected to a first rectangular plate 10, the bottom of the first connecting post 18 and the top of the first rectangular plate 10 respectively fixedly connected to a first clamping plate 19, and the sealing rubber gasket 14 is placed in one of them. The top of the first clamping plate 19; the tensioning mechanism includes a limiting groove 4 formed inside the fixed base 3, two first sliding blocks 5 are slidably connected to the inner side of the limiting groove 4, and the two first sliding blocks 5 are respectively fixedly connected to a connecting block 6, a rotating rod 9 is rotatably connected between the two first connecting plates 2, a drive motor 8 is installed on one side of one of the first connecting plates 2, and the output end of the drive motor 8 is fixedly connected to the rotating rod 9, a positive thread and a negative thread are provided on the outer wall of the rotating rod 9, and the two first sliding blocks 5 are respectively threaded to the positive thread and the negative thread of the rotating rod 9; the gradient clamping device also includes a fixed connection to The bottom of the second connecting plate 13 has three second sliding blocks 16, each of which is slidably connected to a cylinder 15. A first compression spring 17 is installed between the second connecting plate 13 and each cylinder 15, and the elastic coefficient of the three first compression springs 17 decreases sequentially from the direction closer to the first clamping plate 19 to the direction farther away from the first clamping plate 19. Three sets of second clamping plates 20 are provided between the cylinder 15 and the first rectangular plate 10. Each set of second clamping plates 20 has two plates, one of which is fixedly connected to the cylinder 15 and the other of which is fixedly connected to the first rectangular plate 10.

[0033] Both hydraulic cylinders 11 are controlled by a PLC controller, which can control the intermittent start of the two hydraulic cylinders 11. When the operator tests the sealing rubber gasket 14, the operator first places the sealing rubber gasket 14 between multiple sets of first clamping plates 19. Then the PLC controller starts the two hydraulic cylinders 11. The output ends of the two hydraulic cylinders 11 respectively drive a connecting rod 12 to move downward, thereby driving the two second connecting plates 13 to move downward, thereby driving the two first clamping plates 19 and multiple second clamping plates 20 to move downward, thereby clamping the sealing rubber gasket 14. Since the elastic coefficient of the three first compression springs 17 decreases sequentially from the direction close to the first clamping plate 19 to the direction away from the first clamping plate 19, the clamping force near the middle position of the sealing rubber gasket 14 is minimized.

[0034] The drive motor 8 is controlled by a PLC controller, which can control the intermittent start and stop of the drive motor 8. When the sealing rubber gasket 14 is clamped, the PLC controller controls the drive motor 8 to start. The output end of the drive motor 8 drives the rotating rod 9 to rotate, thereby driving the two connecting blocks 6 to move towards the adjacent first connecting plate 2, thereby driving multiple sets of second clamping plates 20 and first clamping plates 19 to move, so that multiple second clamping plates 20 and first clamping plates 19 pull on the sealing rubber gasket 14, thereby conducting a tensile test on the sealing rubber gasket 14. When the sealing rubber gasket 14 is in the first stage... When pulled (the pulling force is less than the force exerted by the second clamping plate 20 near the center on the sealing rubber gasket 14), the sealing rubber gasket 14 in the area between the four clamping plates 20 of the first group becomes thinner under the central stress of the sealing rubber gasket 14. When the force on the sealing rubber gasket 14 is greater than the pressure of the first group of second clamping plates 20 (at this time, the second clamping plates 20 near the center of the sealing rubber gasket 14 will not clamp the sealing rubber gasket 14, and the sealing rubber gasket 14 can gradually thin between the two second clamping plates 20), when the first group of second clamping plates 20... When the clamping plate 20 no longer clamps the sealing rubber gasket 14, the tensile test enters the second stage. The material inside the sealing rubber gasket 14 in the area between the first and second sets of clamping plates 20 begins to flow, gradually thinning. As the sealing rubber gasket 14 continues to be pulled, when the force applied to the sealing rubber gasket 14 exceeds the pressure of the second set of clamping plates 20, the test enters the third stage. The material inside the sealing rubber gasket 14 in the area between the second and third sets of clamping plates 20 begins to flow, and the sealing rubber gasket 14 between the second and third sets begins to gradually thin. When the force exerted is greater than the pressure of the second clamping plate 20 of the third group, the fourth stage begins. The material inside the sealing rubber pad 14 between the third group and the first clamping plate 19 begins to flow, and the sealing rubber pad 14 between the third group and the first clamping plate 19 begins to gradually thin. This allows the sealing rubber pad to thin first from the center area and then gradually thin from both sides during the tensile test, thus achieving a stress gradient transfer. This avoids the clamping edge from thinning at the beginning, which could lead to breakage of the clamping edge and affect the accuracy of the test, thereby improving the overall practicality of the device.

[0035] Please see Figures 3 to 12The tensioning mechanism includes three first rectangular slots 21 formed inside the second connecting plate 13. A third sliding block 22 is slidably connected to the inner side of each of the three first rectangular slots 21. A second compression spring 23 is installed between the third sliding block 22 and the inner side of the first rectangular slot 21. The tensioning mechanism also includes a second rectangular slot 24 formed inside the third sliding block 22. A second connecting post 25 is slidably connected to the inner side of the second rectangular slot 24. A third compression spring 26 is installed between the second connecting post 25 and the inner side of the second rectangular slot 24. Three sets of fourth rectangular slots 45 are formed at the top of the first rectangular plate 10, with two slots in each set. Each fourth rectangular groove 45 has a first connecting strip 28 slidably connected to its inner side. Each set of first connecting strips 28 has two tensioning plates 27 at its top. One tensioning plate 27 is fixedly connected to the bottom of the second connecting post 25, and the other tensioning plate 27 is fixedly connected to the top of the two first connecting strips 28. One tensioning plate 27 has a limit rod 46 fixedly connected to its top, and the other tensioning plate 27 is slidably connected to the outer wall of the limit rod 46. A straightening assembly is provided on one side of the third sliding block 22. The straightening assembly includes two second rectangular plates 32 fixedly connected to both sides of the third sliding block 22, with one end of each second rectangular plate 32... A spherical rod 33 is fixedly connected, with one end of the spherical rod 33 being spherical. Three sets of second connecting strips 29 are fixedly connected to the top inner side of the L-shaped plate 7, with two sets of each set of second connecting strips 29. A driving block 30 is fixedly connected to the bottom of each second connecting strip 29. A first inclined surface 31 is provided on one side of the driving block 30. A stop unit is provided on one side of the sealing rubber gasket 14. The stop unit includes a third connecting strip 34 fixedly connected to the inner side of the first connecting plate 2, and the third connecting strip 34 extends through to the inner side of the L-shaped plate 7 and is fixedly connected to a third connecting plate 35. Three third rectangular grooves 38 are opened on the inner side of the third connecting plate 35. A fixing strip 36 is slidably connected to the inner side of the rectangular groove 38. A fourth compression spring 39 is installed between the fixing strip 36 and the inner side of the third rectangular groove 38. A pressure plate 37 is fixedly connected to one end of each fixing strip 36. The three pressure plates 37 are respectively set on one side of a set of tension plates 27. The abutting unit also includes a third rectangular plate 43 fixedly connected to the bottom of the pressure plate 37. A rotating wheel 44 is rotatably connected to the inner side of the third rectangular plate 43. A fourth connecting plate 40 is fixedly connected to the top of the first rectangular plate 10. Three limiting blocks 41 are installed on the top of the fourth connecting plate 40. A second inclined surface 42 is provided on one side of each of the three limiting blocks 41.

[0036] When the hydraulic cylinder 11 drives the connecting rod 12 to move downwards, thereby causing the second connecting plate 13 to move downwards, it also causes multiple sets of tensioning plates 27 to move downwards, thereby causing the ball rod 33 to move downwards. When the tensioning plate 27 contacts the sealing rubber gasket 14, the tensioning plate 27 continues to move until it clamps the sealing rubber gasket 14 (at this point, the bottom of the tensioning plate 27 is against the top of the pressure plate 37, limiting the tensioning plate 27). At this point, the ball rod 33 moves to the top of the first inclined surface 31, and then continues to move. Under the action of the first inclined plane 31, the ball rod 33 is driven to move away from the second connecting bar 29, thereby driving the tensioning plate 27 to move away from the second connecting bar 29, thus pulling the sealing rubber pad 14 laterally, so that the sealing rubber pad 14 is in a taut state before the test, thereby eliminating the initial wrinkles and looseness of the sealing rubber pad 14, ensuring that the initial state of the test is uniform and consistent, and optimizing the lateral force distribution of the sealing rubber pad 14, reducing the interference of "edge shrinkage" during longitudinal tension, thereby improving the accuracy of the test;

[0037] Furthermore, when the sealing rubber gasket 14 is tightened, the hydraulic cylinder 11 drives multiple second clamping plates 20 and the first clamping plate 19 to clamp the sealing rubber gasket 14. At this time, the tensioning plate 27 remains stationary under the action of the pressure plate 37, thereby avoiding further compression of the sealing rubber gasket 14 and avoiding damage to the membrane material caused by excessive compression. This reduces the deviation of the test data and makes the results more reflective of the true performance of the sealing rubber gasket.

[0038] When the output of the drive motor 8 drives the rotating rod 9 to rotate, thereby driving the two connecting blocks 6 to move towards the adjacent first connecting plate 2, so that the multiple second clamping plates 20 and the first clamping plate 19 pull on the sealing rubber gasket 14, at this time in the first stage, when the sealing rubber gasket 14 in the area between the four second clamping plates 20 of the first group becomes thinner, the fourth connecting plate 40 moves towards the first connecting plate 2 on one side under the action of the connecting block 6, and at this time the top of the first second inclined surface 42 moves to contact the rotating wheel 44. At this time, under the action of the first second inclined surface 42 and the fourth compression spring 39, Pulling the rotating wheel 44 downwards gradually moves the pressure plate 37 downwards, allowing the first set of tensioning plates 27 to continuously and adaptively compress the sealing rubber gasket 14. In the second stage, the first rotating wheel 44 moves to the bottom of the second inclined plane 42, and the second rotating wheel 44 moves to the top of the second inclined plane 42. This allows the three sets of tensioning plates 27 to adapt to different stages, continuously compressing the sealing rubber gasket 14. When the sealing rubber gasket is stretched longitudinally, it is prone to lateral shrinkage (edges moving towards the center) due to material properties, resulting in a smaller actual stretching area and a shift in force distribution. The continuous compression of the three sets of tensioning plates counteracts this shrinkage tendency through lateral constraint force, ensuring that the sealing rubber gasket 14 remains in a stable tension state throughout the test, preventing slack or wrinkles, thus guaranteeing the stability of the test and improving the overall practicality of the device.

[0039] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A performance testing device for rubber gaskets used in sealing mineral equipment, characterized in that, include: The frame (1) has two first connecting plates (2) fixedly connected to its top, and a fixed seat (3) fixedly connected between the two first connecting plates (2). A sealing rubber pad (14) and two connecting blocks (6) are provided on the top of the fixed seat (3). A tensioning mechanism is provided on the top of the fixed base (3) for performing a tension test on the sealing rubber gasket (14); A gradient clamping device is disposed on top of the two connecting blocks (6) for clamping the sealing rubber gasket (14); A tensioning mechanism is provided on the inner side of the two first connecting plates (2) for tensioning the sealing rubber gasket (14); The gradient clamping device includes an L-shaped plate (7) fixedly connected to the top of the connecting block (6). A hydraulic cylinder (11) is installed on the top of the L-shaped plate (7). The output end of the hydraulic cylinder (11) extends through to the inner side of the L-shaped plate (7) and is fixedly connected to a connecting rod (12). The bottom of the connecting rod (12) is fixedly connected to a second connecting plate (13). The bottom of the second connecting plate (13) is fixedly connected to a first connecting column (18). The inner side of the L-shaped plate (7) is fixedly connected to a first rectangular plate (10). The bottom of the first connecting column (18) and the top of the first rectangular plate (10) are respectively fixedly connected to a first clamping plate (19), and the sealing rubber gasket (14) is placed on the top of one of the first clamping plates (19). The gradient clamping device also includes three second sliding blocks (16) fixedly connected to the bottom of the second connecting plate (13). Each second sliding block (16) has a cylinder (15) slidably connected to its bottom. A first compression spring (17) is installed between the second connecting plate (13) and each cylinder (15). The elastic coefficient of the three first compression springs (17) decreases sequentially from the direction closer to the first clamping plate (19) to the direction farther away from the first clamping plate (19). Three sets of second clamping plates (20) are provided between the cylinder (15) and the first rectangular plate (10). Each set of second clamping plates (20) has two plates. One second clamping plate (20) is fixedly connected to the cylinder (15), and the other second clamping plate (20) is fixedly connected to the first rectangular plate (10).

2. The performance testing device for sealing rubber gaskets in mineral equipment according to claim 1, characterized in that, The tensioning mechanism includes a limiting groove (4) formed inside the fixed seat (3). Two first sliding blocks (5) are slidably connected to the inner side of the limiting groove (4), and the two first sliding blocks (5) are respectively fixedly connected to a connecting block (6). A rotating rod (9) is rotatably connected between the two first connecting plates (2). A drive motor (8) is installed on one side of one of the first connecting plates (2), and the output end of the drive motor (8) is fixedly connected to the rotating rod (9). The outer wall of the rotating rod (9) is provided with a positive thread and a negative thread, and the two first sliding blocks (5) are respectively threaded to the positive thread and the negative thread of the rotating rod (9).

3. The performance testing device for sealing rubber gaskets in mineral equipment according to claim 2, characterized in that, The tensioning mechanism includes three first rectangular slots (21) formed on the inner side of the second connecting plate (13). A third sliding block (22) is slidably connected to the inner side of each of the three first rectangular slots (21). A second compression spring (23) is installed between the third sliding block (22) and the inner side of the first rectangular slot (21).

4. The performance testing device for sealing rubber gaskets in mineral equipment according to claim 3, characterized in that, The tensioning mechanism further includes a second rectangular groove (24) formed inside the third sliding block (22). A second connecting post (25) is slidably connected to the inner side of the second rectangular groove (24). A third compression spring (26) is installed between the second connecting post (25) and the inner side of the second rectangular groove (24). Three sets of fourth rectangular grooves (45) are formed at the top of the first rectangular plate (10). Each set of fourth rectangular grooves (45) has two grooves. A first connecting post (26) is slidably connected to the inner side of each fourth rectangular groove (45). The first connecting strip (28) of each group has two tensioning plates (27) at its top. One tensioning plate (27) is fixedly connected to the bottom of the second connecting post (25), and the other tensioning plate (27) is fixedly connected to the top of the two first connecting strips (28). One tensioning plate (27) is fixedly connected to a limit rod (46) at its top, and the other tensioning plate (27) is slidably connected to the outer wall of the limit rod (46). A straightening component is provided on one side of the third sliding block (22).

5. The performance testing device for sealing rubber gaskets in mineral equipment according to claim 4, characterized in that, The straightening assembly includes two second rectangular plates (32) fixedly connected to both sides of the third sliding block (22). One end of each of the two second rectangular plates (32) is fixedly connected to a spherical rod (33). One end of the spherical rod (33) is set as a spherical surface. Three sets of second connecting strips (29) are fixedly connected to the top of the inner side of the L-shaped plate (7). Each set of second connecting strips (29) has two strips. The bottom of each second connecting strip (29) is fixedly connected to a driving block (30). One side of the driving block (30) is provided with a first inclined surface (31). One side of the sealing rubber pad (14) is provided with an abutting unit.

6. The performance testing device for sealing rubber gaskets in mineral equipment according to claim 5, characterized in that, The abutting unit includes a third connecting strip (34) fixedly connected to the inner side of the first connecting plate (2), and the third connecting strip (34) extends through to the inner side of the L-shaped plate (7) and is fixedly connected to a third connecting plate (35). The inner side of the third connecting plate (35) is provided with three third rectangular grooves (38), and a fixing strip (36) is slidably connected to the inner side of each of the three third rectangular grooves (38). A fourth compression spring (39) is installed between the fixing strip (36) and the inner side of the third rectangular groove (38). One end of each fixing strip (36) is fixedly connected to a pressure plate (37), and the three pressure plates (37) are respectively arranged on one side of a set of tensioning plates (27).

7. The performance testing device for sealing rubber gaskets in mineral equipment according to claim 6, characterized in that, The abutting unit also includes a third rectangular plate (43) fixedly connected to the bottom of the pressure plate (37). A rotating wheel (44) is rotatably connected to the inner side of the third rectangular plate (43). A fourth connecting plate (40) is fixedly connected to the top of the first rectangular plate (10). Three limiting blocks (41) are installed on the top of the fourth connecting plate (40). A second inclined surface (42) is provided on one side of each of the three limiting blocks (41).

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