A graphite electrode safety detection platform and detection method

Abstract

The application discloses a graphite electrode safety detection platform, which comprises a detection table, two connecting plates are symmetrically and fixedly connected to the upper end of the detection table, a connecting box is fixedly connected to the upper end of the two connecting plates, an infrared optical detection head is installed at the inner top of the connecting box, a travel switch is installed at the rear side of the connecting box, and the travel switch is matched with the infrared optical detection head; a rotating mechanism comprises a rectangular groove which is arranged at the upper end of the detection table, and two rotating rollers are rotatably connected between the left and right inner walls of the rectangular groove. The application also discloses a detection method for graphite electrode safety detection. In the specific detection, the graphite electrode can be continuously and comprehensively detected by rotating and moving, so that the actual detection efficiency is greatly improved. In addition, the unqualified position can be marked and an alarm can be sent to remind the staff, so that the actual use is facilitated.

Description

Technical Field

[0001] This invention relates to the field of graphite electrode testing, and more particularly to a graphite electrode safety testing platform and testing method. Background Technology

[0002] In the production and application of graphite electrodes, quality inspection is a crucial step in ensuring product performance and safety. As an important conductive material, graphite electrodes are widely used in industrial applications such as steel smelting and electric arc furnace steelmaking; their quality directly affects smelting efficiency and product quality.

[0003] There are many traditional methods for detecting graphite electrodes, one of which is infrared optical detection. In existing detection methods, in order to perform comprehensive detection, the graphite electrode limit position is usually used, and then rotated and detected by a moving infrared optical detection head. However, this method cannot perform continuous detection, resulting in low detection efficiency.

[0004] On the other hand, traditional testing methods lack effective marking and alerting functions. Even if inspectors find defects in the electrodes, they will not mark them. Due to the lack of clear markings, it is difficult for staff to quickly and accurately locate the defective parts, increasing the difficulty and time cost of handling the issue. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a graphite electrode safety testing platform. During testing, the graphite electrode can be rotated and moved simultaneously, enabling continuous and comprehensive testing, which greatly improves the actual testing efficiency. In addition, any non-conforming areas will be marked and an alarm will be issued to remind staff, facilitating practical use.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A graphite electrode safety testing platform includes a testing platform. Two connecting plates are symmetrically fixedly connected to the upper end of the testing platform. A connecting box is fixedly connected to the upper ends of the two connecting plates. An infrared optical detection head is installed inside the top of the connecting box. A limit switch is installed on the rear side of the connecting box, and the limit switch cooperates with the infrared optical detection head. A rotating mechanism includes a rectangular groove formed at the upper end of the testing platform. Two rotating rollers are rotatably connected between the left and right inner walls of the rectangular groove. Two transmission rollers are rotatably connected between the front and rear inner walls of the rectangular groove. A common winding mechanism is mounted on the two transmission rollers. The device includes a drive belt, multiple support rollers for supporting the drive belt rotatably connected between the front and rear inner walls of the rectangular groove, multiple abutting members fixedly connected to the outer side of the drive belt, each abutting member including a vertical abutment plate fixedly connected to the outer side of the drive belt, a horizontal plate fixedly connected to one side of the vertical abutment plate, and multiple ball bearings provided on the other side of the vertical abutment plate. The upper ends of the multiple vertical abutment plates located above extend into the gap between two rotating rollers. A drive mechanism is also included to enable the operation of the rotating mechanism. Finally, a cleaning mechanism is used to clean the dust from the graphite electrode before detection.

[0008] Preferably, the drive mechanism includes a gearbox mounted on the front side of the testing table, the output end of the gearbox extending into the interior of a rectangular groove and fixedly connected to the front end of the rotating shaft of the right transmission roller, a mounting bracket mounted on the front side of the testing table, a drive motor mounted on the mounting bracket, and the output shaft of the drive motor fixedly connected to the input shaft of the gearbox.

[0009] Preferably, two mounting plates are fixedly connected to the left side of the testing platform, and a rotating shaft is rotatably connected between the two mounting plates. The front end of the rotating shaft passes through the front mounting plate, and a second synchronous pulley is mounted on both the rotating shaft and the output shaft of the drive motor. The two second synchronous pulleys are connected by a second synchronous belt. The left end rotating shafts of the two rotating rollers extend to the outside and are equipped with first synchronous pulleys. The two first synchronous pulleys are connected by a first synchronous belt. The rear end of the rotating shaft passes through the rear mounting plate and is fixedly connected with a second bevel gear. A first bevel gear is mounted on the left rotating shaft of the rotating roller located on the front side, and the first bevel gear meshes with the second bevel gear.

[0010] Preferably, the cleaning mechanism includes a piston cylinder fixedly connected to the front side of the testing platform, a first piston plate that can slide up and down is provided inside the piston cylinder, a drive disk is fixedly connected to the front end of the rotating shaft, a drive rod is rotatably connected to the front eccentric part of the drive disk, and the other end of the drive rod is rotatably connected to the upper end of the first piston plate.

[0011] Preferably, an air accumulator is fixedly connected to the upper end of the connecting box, the inner top of the air accumulator is connected to the outside through an air hole, and a second piston plate that can slide up and down is provided inside the air accumulator. The upper end of the second piston plate is elastically connected to the inner top of the air accumulator through a release spring.

[0012] Preferably, a U-shaped hollow strip is fixedly connected to the upper end of the testing platform, and multiple air jets are opened at the bottom of the horizontal part of the U-shaped hollow strip. The inner top space of the air storage cylinder is connected to the interior of the U-shaped hollow strip through a release pipe.

[0013] Preferably, the inner bottom space of the piston cylinder is connected to the outside through a one-way port, and the inner bottom space of the piston cylinder is connected to the inner bottom hole of the gas storage cylinder through a one-way pipe. Both the one-way port and the one-way pipe are equipped with one-way valves. The flow direction of the one-way valve inside the one-way port is one-way from the outside into the piston cylinder, and the flow direction of the one-way valve inside the one-way pipe is one-way from the piston cylinder into the gas storage cylinder.

[0014] Preferably, an exhaust pipe is fixedly connected to the inner top of the connecting box. A piston block that can slide up and down is provided inside the exhaust pipe. The upper end of the piston block is elastically connected to the inner top of the exhaust pipe through a restoring spring. The inner bottom space of the air storage cylinder is connected to the inner top space of the exhaust pipe through a connecting pipe. A solenoid valve is installed inside the connecting pipe. The solenoid valve is electrically connected to the infrared optical detection head. The inner top space of the exhaust pipe is connected to the outside through the exhaust pipe. A wind whistle is installed inside the exhaust pipe. The diameter of the exhaust pipe is half the diameter of the connecting pipe. The lower end of the piston block is fixedly connected to an indicator pen. The lower end of the indicator pen penetrates the inner bottom of the exhaust pipe.

[0015] This invention also discloses a detection method for the safety testing of graphite electrodes, which uses the above-mentioned detection platform and includes the following steps:

[0016] Step 1: Start the cleaning mechanism. The drive motor drives the rotating shaft to rotate via the gearbox. The front drive disc pushes the first piston plate in the piston cylinder to slide back and forth through the drive rod. Gas is drawn in through the one-way port and then pressed into the bottom of the gas storage cylinder through the one-way tube, pushing the second piston plate to move up to a height higher than the release tube. The gas is then continuously delivered through the release tube to the U-shaped hollow strip jet nozzle and ejected.

[0017] Step 2: Place the columnar graphite electrode between two rotating rollers in the rectangular groove of the testing platform. The drive motor drives the right transmission roller to rotate through the gearbox, which drives the transmission belt to rotate clockwise. The ball bearings of the outer abutment contact the right side of the graphite electrode and push it to the right. The rotating shaft drives the first synchronous pulley through the second synchronous pulley and the second synchronous belt. Through the first synchronous belt, the first bevel gear and the second bevel gear, the two rotating rollers rotate synchronously. The graphite electrode continues to rotate as it moves to the right. The surface dust is blown away and cleaned through the U-shaped hollow strip air nozzle.

[0018] Step 3: When the right end of the graphite electrode is moved directly below the infrared optical detection head, the limit switch triggers the detection head to start and detects the distance between it and the electrode surface in real time; if the detected value is within the preset error range, the size is determined to be qualified; if the local distance exceeds the tolerance, it is determined that there is a defect at that position;

[0019] Step 4: When a local defect is detected, the solenoid valve is triggered to open, and the high-pressure gas in the gas accumulator is quickly injected into the top of the exhaust pipe through the connecting pipe. Due to the limitation of the exhaust pipe diameter, the gas pressure pushes the piston block down, which drives the indicator pen to mark the defect location.

[0020] Step 5: When the high-pressure gas in the exhaust pipe is discharged through the exhaust pipe, it drives the whistle to sound and alert the staff; if the overall size is not up to standard, the solenoid valve will remain open for 4 seconds and then automatically close, only performing a brief marking process.

[0021] Compared with the prior art, the beneficial effects of this invention are as follows:

[0022] 1. By driving the piston cylinder with a drive motor to reciprocate to suck in and exhaust air, combined with the multi-jet nozzle design of the U-shaped hollow strip, the graphite electrode surface can be swept in all directions without dead angles, effectively removing dust and impurities, avoiding light reflection interference, and significantly improving the accuracy and reliability of subsequent infrared detection.

[0023] 2. The graphite electrode is moved to the right by a transmission belt and ball bearings, and the rotating roller is driven to rotate by a synchronous pulley and bevel gear set. This realizes an automated conveying mode in which the electrode moves and rotates at the same time, which greatly simplifies the operation process and improves the detection efficiency.

[0024] 3. When a local defect is detected, the solenoid valve triggers the high-pressure gas in the accumulator to push the piston block down, which in turn drives the indicator pen to directly mark the defect location. At the same time, the whistle sounds an alarm, enabling rapid defect location and manual intervention, reducing the risk of missed detection.

[0025] 4. For graphite electrodes with a diameter that is consistently too large or too small, the infrared optical detection head only triggers a brief marking process for a few seconds to avoid invalid depth detection, concentrate resources to deal with key defects, optimize the allocation of detection resources, and improve overall detection efficiency.

[0026] In summary, this detection platform achieves automated continuous detection, greatly improving detection efficiency. In addition, it can effectively mark defects, thus facilitating subsequent troubleshooting operations. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of a graphite electrode safety testing platform proposed in this invention;

[0028] Figure 2 for Figure 1Enlarged view of point A;

[0029] Figure 3 This is a schematic diagram showing the interaction between the drive disc and the piston cylinder.

[0030] Figure 4 for Figure 1 A schematic diagram of the cross-sectional structure;

[0031] Figure 5 A cross-sectional schematic diagram showing the connection between the connecting box and the air accumulator;

[0032] Figure 6 This is an enlarged view of one of the actuating components.

[0033] In the diagram: 1. Detection platform, 2. Air vent, 3. Mounting bracket, 4. Gearbox, 5. Drive motor, 6. Shaft, 7. Rectangular groove, 8. Rotating roller, 9. U-shaped hollow strip, 10. Connecting plate, 11. Connecting box, 12. Air accumulator, 13. One-way pipe, 14. Exhaust pipe, 15. First synchronous pulley, 16. First synchronous belt, 17. First bevel gear, 18. Second bevel gear, 19. Ball bearing, 20. Mounting plate, 21. Drive disc, 22. Second synchronous pulley, 23. Second synchronous belt, 24. Piston cylinder, 25. Drive rod, 26. First piston plate, 27. One-way port, 28. Transmission roller, 29. Support roller, 30. Vertical abutment plate, 31. Transmission belt, 32. Release pipe, 33. Release spring, 34. Second piston plate, 35. Connecting pipe, 36. Infrared optical detection head, 37. Limit switch, 38. Exhaust pipe, 39. Return spring, 40. Piston block, 41. Indicator pen, 42. Horizontal plate. Detailed Implementation

[0034] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0035] Reference Figures 1-6 A graphite electrode safety testing platform includes a testing platform 1. Two connecting plates 10 are symmetrically fixedly connected to the upper end of the testing platform 1. A connecting box 11 is fixedly connected to the upper end of the two connecting plates 10. An infrared optical detection head 36 is installed on the top inner side of the connecting box 11. The infrared optical detection head 36 is an infrared rangefinder that can detect the distance between itself and the graphite electrode. Specifically, if the graphite electrode is of qualified size, the distance between the infrared optical detection head 36 and the graphite electrode will always be within the error range. If it exceeds this error, it means that its size is problematic. A limit switch 37 is installed on the rear side of the connecting box 11. The limit switch 37 cooperates with the infrared optical detection head 36. When it detects that the right end of the graphite electrode is just below the infrared optical detection head 36, it can control the infrared optical detection head 36 to start working. When the left end moves away from the infrared optical detection head 36, it controls the infrared optical detection head 36 to turn off.

[0036] In one embodiment of the present invention, a rotating mechanism is also included. The rotating mechanism includes a rectangular groove 7 formed at the upper end of the detection platform 1. Two rotating rollers 8 are rotatably connected between the inner walls of the left and right sides of the rectangular groove 7. Two transmission rollers 28 are rotatably connected between the inner walls of the front and rear sides of the rectangular groove 7. A transmission belt 31 is wound around the two transmission rollers 28. A plurality of support rollers 29 for supporting the transmission belt 31 are rotatably connected between the inner walls of the front and rear sides of the rectangular groove 7. A plurality of abutting members are fixedly connected to the outer side of the transmission belt 31. The abutting members include a vertical abutment plate 30 fixedly connected to the outer side of the transmission belt 31. One side of the vertical abutment plate 30 is fixedly connected to... There is a horizontal plate 42, and multiple balls 19 are provided on the other side of the vertical abutment plate 30. The upper ends of the multiple vertical abutment plates 30 extend to the gap between the two rotating rollers 8. Furthermore, when the drive mechanism is running, the transmission belt 31 will rotate clockwise in the front-back direction, and at the same time, the two rotating rollers 8 will rotate synchronously. In this way, the columnar graphite electrode is placed between the two rotating rollers 8, and after it comes into contact with both rotating rollers 8, it will rotate. After one of the abutment members rotates to the right side (at the ball 19) and contacts the graphite electrode, the graphite electrode moves to the right, realizing that it rotates and moves to the right at the same time.

[0037] In one embodiment of the present invention, a drive mechanism is also included. The drive mechanism is used to realize the operation of the rotating mechanism. The drive mechanism includes a gearbox 4 installed on the front side of the testing table 1. The gearbox 4 uses a reducer to prevent the rotation speed of the transmission belt 31 from being too fast. The output end of the gearbox 4 extends into the rectangular groove 7 and is fixedly connected to the front end of the rotating shaft of the right-side transmission roller 28. A mounting bracket 3 is installed on the front side of the testing table 1. A drive motor 5 is installed on the mounting bracket 3. The output shaft of the drive motor 5 is fixedly connected to the input shaft of the gearbox 4. Two mounting plates 20 are fixedly connected to the left side of the testing table 1. A rotating shaft 6 is rotatably connected between the two rollers 8 and the drive motor 5. The front end of the rotating shaft 6 passes through the front mounting plate 20. The rotating shaft 6 and the output shaft of the drive motor 5 are both equipped with second synchronous pulleys 22. The two second synchronous pulleys 22 are connected by a second synchronous belt 23. The left end rotating shafts of the two rollers 8 extend to the outside and are equipped with first synchronous pulleys 15. The two first synchronous pulleys 15 are connected by a first synchronous belt 16. The rear end of the rotating shaft 6 passes through the rear mounting plate 20 and is fixedly connected with a second bevel gear 18. The left rotating shaft of the front roller 8 is equipped with a first bevel gear 17, which meshes with the second bevel gear 18.

[0038] As one embodiment of the present invention, a cleaning mechanism is also included. The cleaning mechanism is used to clean the dust off the graphite electrode before testing. The cleaning mechanism includes a piston cylinder 24 fixedly connected to the front side of the testing platform 1. A first piston plate 26 that can slide up and down is provided inside the piston cylinder 24. A drive disk 21 is fixedly connected to the front end of the rotating shaft 6. A drive rod 25 is rotatably connected to the front eccentric part of the drive disk 21. The other end of the drive rod 25 is rotatably connected to the upper end of the first piston plate 26. An air accumulator 12 is fixedly connected to the upper end of the connecting box 11. The inner top of the air accumulator 12 is connected to the outside through an air hole 2. A second piston plate 34 that can slide up and down is provided inside the air accumulator 12. The upper end of the second piston plate 34 is elastically connected to the inner top of the air accumulator 12 through a release spring 33. A U-shaped hollow strip 9 is fixedly connected to the upper end of the testing platform 1. Multiple air jets are opened at the bottom of the horizontal part of the U-shaped hollow strip 9. The inner top space of the air accumulator 12 is connected to the interior of the U-shaped hollow strip 9 through a release pipe 32.

[0039] In one embodiment of the present invention, the inner bottom space of the piston cylinder 24 is connected to the outside through a one-way port 27, and the inner bottom space of the piston cylinder 24 is connected to the inner bottom hole of the air storage cylinder 12 through a one-way pipe 13. One-way valves are installed inside both the one-way port 27 and the one-way pipe 13. The flow direction of the one-way valve inside the one-way port 27 is one-way from the outside into the piston cylinder 24, and the flow direction of the one-way valve inside the one-way pipe 13 is one-way from the piston cylinder 24 into the air storage cylinder 12.

[0040] In one embodiment of the present invention, an exhaust pipe 38 is fixedly connected to the inner top of the connecting box 11. A piston block 40 that can slide up and down is provided inside the exhaust pipe 38. The upper end of the piston block 40 is elastically connected to the inner top of the exhaust pipe 38 through a restoring spring 39. The stiffness coefficient of the restoring spring 39 is less than that of the release spring 33. The inner bottom space of the air storage cylinder 12 is connected to the inner top space of the exhaust pipe 38 through a connecting pipe 35. A solenoid valve is installed inside the connecting pipe 35. The solenoid valve is electrically connected to the infrared optical detection head 36. The inner top space of the exhaust pipe 38 is connected to the outside through an exhaust pipe 14. A whistle is installed inside the exhaust pipe 14. The diameter of the exhaust pipe 14 is half the diameter of the connecting pipe 35. The lower end of the piston block 40 is fixedly connected to an indicator pen 41.

[0041] In one embodiment of the present invention, when the infrared optical detection head 36 detects that the distance between the graphite electrode surface and its position is outside the set range, it will trigger the solenoid valve to be energized. After the solenoid valve is energized, the gas in the bottom space of the gas storage cylinder 12 will be released from the connecting pipe 35. After a large amount of gas is released into the top space of the exhaust pipe 38, due to the slow exhaust speed of the exhaust pipe 14 (the exhaust pipe 14 will also make a whistle sound when exhausting, reminding the staff that there is a problem with the graphite electrode, and subsequent secondary investigation will be carried out), the air pressure in the top space will accumulate, which will cause the piston block 40 to move down and the indicator pen 41 to move down, so that it contacts the graphite electrode and marks the position. This method can be used to detect the damage and dents on the surface of the graphite electrode. If the size of the graphite electrode is incorrect, that is... If the overall size increases or decreases, the data detected by the infrared optical detection head 36 will remain constant at a relatively large or small value. In this case, the solenoid valve will only be activated for 4 seconds and then closed. If the size is not up to standard, the surface depth will not be measured. The lower end of the indicator pen 41 penetrates the bottom of the exhaust pipe 38. It should be noted that a large amount of gas accumulates at the bottom of the air accumulator 12 in the initial state. At this time, the second piston plate 34 is located just below the second piston plate 34. When the first piston plate 26 moves up and down and supplies gas into the air accumulator 12, the gas supply speed is fast and the gas supply per unit time is large. Even if the solenoid valve in the connecting pipe 35 is opened, some gas will still be released from the release pipe 32 after being supplied, thus achieving the cleaning operation.

[0042] In this invention, before detection, the cleaning mechanism is activated: the drive motor 5 drives the rotating shaft 6 to rotate via the transmission 4, and the drive disc 21 at the front end of the rotating shaft 6 drives the drive rod 25 to move eccentrically. The drive rod 25 pushes the first piston plate 26 inside the piston cylinder 24 to slide up and down reciprocally. After the gas is drawn in through the one-way port 27 (one-way valve allows external gas to enter the piston cylinder 24), it is pressed into the bottom of the gas storage cylinder 12 through the one-way pipe 13 (one-way valve allows gas to enter the gas storage cylinder 12 in one direction). In the initial state, a large amount of gas accumulates at the bottom of the gas storage cylinder 12. At this time, the second piston plate 34 is just below the second piston plate 34. As the gas is supplied, the second piston plate 34 moves up to a position higher than the release pipe 32, so that some gas is released through the release pipe 32. The gas in the gas storage cylinder 12 is continuously transported into the U-shaped hollow strip 9 through the release pipe 32 and sprayed out through multiple jet nozzles.

[0043] A columnar graphite electrode is placed between two rotating rollers 8 in the rectangular groove 7 of the detection stage 1, so that it contacts the two rotating rollers 8. The drive motor 5 drives the right transmission roller 28 to rotate through the gearbox 4. The transmission roller 28 drives the transmission belt 31 to rotate clockwise. Multiple abutments (vertical abutment plate 30, horizontal plate 42 and ball bearings 19) on the outside of the transmission belt 31 move with the belt. When the ball bearing 19 of a certain abutment contacts the right side of the graphite electrode, it pushes the graphite electrode to move to the right. At the same time, the rotating shaft 6 will rotate through the second synchronous pulley 22 and the second synchronous belt 23. Then, through the first synchronous pulley 15 and the first synchronous belt 16, the first bevel gear 17 and the second bevel gear 18 are used to drive the two rotating rollers 8 to rotate synchronously, so that the graphite electrode continues to rotate during the rightward movement, realizing a state of rotating and moving at the same time. When it passes through the U-shaped hollow strip 9, it will be thoroughly self-cleaned, and the dust on it will be blown off to avoid the dust affecting the accuracy of subsequent detection (dust will cause changes in light reflection, affecting the detection).

[0044] When the right end of the graphite electrode moves directly below the infrared optical detection head 36, the limit switch 37 detects the position signal and triggers the infrared optical detection head 36 to start, beginning real-time detection of its distance from the graphite electrode surface. If the graphite electrode surface dimensions are acceptable, the distance value detected by the infrared optical detection head 36 will always be within the preset error range; if a local distance is detected to exceed the error range (e.g., surface damage or depressions), it is determined that there is a defect at that location.

[0045] When the infrared optical inspection head 36 detects a local defect, it triggers the solenoid valve to open, and the high-pressure gas at the bottom of the gas accumulator 12 is rapidly injected into the top space of the exhaust pipe 38 through the connecting pipe 35. Because the diameter of the exhaust pipe 14 (half that of the connecting pipe 35) limits the exhaust speed, the air pressure at the top of the exhaust pipe 38 rises rapidly, pushing the piston block 40 to overcome the spring force of the return spring 39 and move downwards, causing the indicator pen 41 to contact the graphite electrode surface and leave a mark at the defect location. Simultaneously, the high-pressure gas, when discharged through the exhaust pipe 14, drives the whistle to sound, alerting the workers. It should be noted that if the overall size of the graphite electrode is found to be unqualified (e.g., the diameter is consistently too large or too small), the infrared optical inspection head 36 only triggers the solenoid valve to remain open for 4 seconds before automatically closing it, briefly marking the defect. No deep surface inspection is performed. After inspection, the electrode is unloaded from the right side of the drive belt 31. Using this method, continuous and comprehensive inspection can be achieved, greatly improving inspection efficiency.

[0046] This invention also discloses a detection method for the safety testing of graphite electrodes, which uses the above-mentioned detection platform and includes the following steps:

[0047] Step 1: Start the cleaning mechanism. The drive motor 5 drives the rotating shaft 6 to rotate via the gearbox 4. The front drive disc 21 pushes the first piston plate 26 in the piston cylinder 24 to slide back and forth through the drive rod 25. The gas is drawn in through the one-way port 27 and then pressed into the bottom of the gas storage cylinder 12 through the one-way tube 13, pushing the second piston plate 34 to move up to a height higher than the release tube 32. The gas is continuously delivered through the release tube 32 to the jet nozzle of the U-shaped hollow strip 9 and ejected.

[0048] Step 2: Place the columnar graphite electrode between the two rotating rollers 8 in the rectangular groove 7 of the detection stage 1. The drive motor 5 drives the right transmission roller 28 to rotate through the gearbox 4, which drives the transmission belt 31 to rotate clockwise. The ball bearing 19 of the outer abutment contacts the right side of the graphite electrode and pushes it to the right. The rotating shaft 6 drives the first synchronous pulley 15 through the second synchronous pulley 22 and the second synchronous belt 23. Through the first synchronous belt 16, the first bevel gear 17 and the second bevel gear 18, the two rotating rollers 8 rotate synchronously. The graphite electrode continues to rotate as it moves to the right. The surface dust is blown away and cleaned through the air jet nozzle of the U-shaped hollow strip 9.

[0049] Step 3: When the right end of the graphite electrode is moved directly below the infrared optical detection head 36, the limit switch 37 triggers the detection head to start and detects the distance between it and the electrode surface in real time; if the detected value is within the preset error range, the size is deemed to be qualified; if the local distance exceeds the tolerance, the location is deemed to have a defect.

[0050] Step 4: When a local defect is detected, the solenoid valve is triggered to open. The high-pressure gas in the gas storage tank 12 is quickly injected into the top of the exhaust tank 38 through the connecting pipe 35. Due to the limitation of the diameter of the exhaust pipe 14, the air pressure pushes the piston block 40 to move down, which drives the indicator pen 41 to mark the defect location.

[0051] Step 5: When the high-pressure gas in the exhaust pipe 38 is discharged through the exhaust pipe 14, it drives the whistle to sound and alert the staff; if the overall size is not up to standard, the solenoid valve will remain open for 4 seconds and then automatically close, only performing a brief marking process.

[0052] The above description is only 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 graphite electrode safety testing platform, characterized in that, include: The detection table (1) has two connecting plates (10) symmetrically fixedly connected to its upper end. The upper ends of the two connecting plates (10) are fixedly connected to a connecting box (11). An infrared optical detection head (36) is installed on the inner top of the connecting box (11). A limit switch (37) is installed on the rear side of the connecting box (11). The limit switch (37) cooperates with the infrared optical detection head (36). The rotating mechanism includes a rectangular groove (7) at the top of the testing platform (1). Two rotating rollers (8) are rotatably connected between the inner walls of the left and right sides of the rectangular groove (7). Two transmission rollers (28) are rotatably connected between the inner walls of the front and rear sides of the rectangular groove (7). A transmission belt (31) is wound around the two transmission rollers (28). Multiple support rollers (29) for supporting the transmission belt (31) are rotatably connected between the inner walls of the rectangular groove (7). Multiple abutting members are fixedly connected to the outer side of the transmission belt (31). The abutting members include a vertical abutting plate (30) fixedly connected to the outer side of the transmission belt (31). A horizontal plate (42) is fixedly connected to one side of the vertical abutting plate (30). Multiple balls (19) are provided on the other side of the vertical abutting plate (30). The upper ends of the multiple vertical abutting plates (30) located above extend to the gap between the two rotating rollers (8). The drive mechanism is used to realize the operation of the rotating mechanism. The drive mechanism includes a gearbox (4) installed on the front side of the test table (1). The output end of the gearbox (4) extends into the rectangular groove (7) and is fixedly connected to the front end of the rotating shaft of the right transmission roller (28). A mounting bracket (3) is installed on the front side of the test table (1). A drive motor (5) is installed on the mounting bracket (3). The output shaft of the drive motor (5) is fixedly connected to the input shaft of the gearbox (4). A cleaning mechanism is used to clean dust from a graphite electrode before testing; Two mounting plates (20) are fixedly connected to the left side of the testing platform (1). A rotating shaft (6) is rotatably connected between the two mounting plates (20). The front end of the rotating shaft (6) passes through the front mounting plate (20). A second synchronous pulley (22) is installed on both the rotating shaft (6) and the output shaft of the drive motor (5). The two second synchronous pulleys (22) are connected by a second synchronous belt (23). The left end rotating shafts of the two rotating rollers (8) extend to the outside and are equipped with a first synchronous pulley (15). The two first synchronous pulleys (15) are connected by a first synchronous belt (16). The rear end of the rotating shaft (6) passes through the rear mounting plate (20) and is fixedly connected with a second bevel gear (18). A first bevel gear (17) is installed on the left rotating shaft of the rotating roller (8) located on the front side. The first bevel gear (17) meshes with the second bevel gear (18).

2. The graphite electrode safety testing platform according to claim 1, characterized in that, The cleaning mechanism includes a piston cylinder (24) fixedly connected to the front side of the testing platform (1). A first piston plate (26) that can slide up and down is provided inside the piston cylinder (24). A drive disk (21) is fixedly connected to the front end of the rotating shaft (6). A drive rod (25) is rotatably connected to the front eccentric part of the drive disk (21). The other end of the drive rod (25) is rotatably connected to the upper end of the first piston plate (26).

3. The graphite electrode safety testing platform according to claim 2, characterized in that, An air accumulator (12) is fixedly connected to the upper end of the connecting box (11). The inner top of the air accumulator (12) is connected to the outside through an air hole (2). A second piston plate (34) that can slide up and down is provided inside the air accumulator (12). The upper end of the second piston plate (34) is elastically connected to the inner top of the air accumulator (12) through a release spring (33).

4. The graphite electrode safety testing platform according to claim 3, characterized in that, The upper end of the testing platform (1) is fixedly connected to a U-shaped hollow strip (9). Multiple air jets are opened at the bottom of the horizontal part of the U-shaped hollow strip (9). The inner top space of the air storage cylinder (12) is connected to the interior of the U-shaped hollow strip (9) through a release pipe (32).

5. The graphite electrode safety testing platform according to claim 4, characterized in that, The inner bottom space of the piston cylinder (24) is connected to the outside through a one-way port (27). The inner bottom space of the piston cylinder (24) is connected to the inner bottom hole of the air storage cylinder (12) through a one-way pipe (13). One-way valves are installed inside both the one-way port (27) and the one-way pipe (13). The flow direction of the one-way valve inside the one-way port (27) is one-way from the outside into the piston cylinder (24). The flow direction of the one-way valve inside the one-way pipe (13) is one-way from the piston cylinder (24) into the air storage cylinder (12).

6. The graphite electrode safety testing platform according to claim 5, characterized in that, An exhaust pipe (38) is fixedly connected to the inner top of the connecting box (11). A piston block (40) that can slide up and down is provided inside the exhaust pipe (38). The upper end of the piston block (40) is elastically connected to the inner top of the exhaust pipe (38) through a restoring spring (39). The inner bottom space of the air storage cylinder (12) is connected to the inner top space of the exhaust pipe (38) through a connecting pipe (35). An electromagnetic valve is installed inside the connecting pipe (35). The electromagnetic valve is electrically connected to the infrared optical detection head (36). The inner top space of the exhaust pipe (38) is connected to the outside through an exhaust pipe (14). A wind whistle is installed inside the exhaust pipe (14). The diameter of the exhaust pipe (14) is half the diameter of the connecting pipe (35). The lower end of the piston block (40) is fixedly connected to an indicator pen (41). The lower end of the indicator pen (41) penetrates the inner bottom of the exhaust pipe (38).

7. A method for safety testing of graphite electrodes, employing the testing platform as described in claim 6, characterized in that, Includes the following steps: Step 1: Start the cleaning mechanism. The drive motor (5) drives the rotating shaft (6) to rotate via the gearbox (4). The front drive disc (21) pushes the first piston plate (26) in the piston cylinder (24) to slide back and forth through the drive rod (25). The gas is drawn in through the one-way port (27) and then pressed into the bottom of the gas storage cylinder (12) through the one-way pipe (13), pushing the second piston plate (34) to move up to a position higher than the release pipe (32). The gas is continuously delivered through the release pipe (32) to the jet nozzle of the U-shaped hollow strip (9) and ejected. Step 2: Place the columnar graphite electrode between the two rotating rollers (8) in the rectangular groove (7) of the detection table (1). Drive the motor (5) through the gearbox (4) to drive the right transmission roller (28) to rotate, which drives the transmission belt (31) to rotate clockwise. The ball (19) of the outer abutment contacts the right side of the graphite electrode and pushes it to the right. The rotating shaft (6) drives the first synchronous pulley (15) through the second synchronous pulley (22) and the second synchronous belt (23). Through the first synchronous belt (16), the first bevel gear (17) and the second bevel gear (18), the two rotating rollers (8) rotate synchronously. When the graphite electrode moves to the right, it continues to rotate. The surface dust is blown away and cleaned through the air jet nozzle of the U-shaped hollow strip (9). Step 3: When the right end of the graphite electrode is moved directly below the infrared optical detection head (36), the limit switch (37) triggers the detection head to start and detects the distance between it and the electrode surface in real time; if the detected value is within the preset error range, the size is deemed to be qualified; if the local distance exceeds the tolerance, a defect is deemed to exist; Step 4: When a local defect is detected, the solenoid valve is triggered to open. The high-pressure gas in the gas storage tank (12) is quickly injected into the top of the exhaust pipe (38) through the connecting pipe (35). Due to the limitation of the diameter of the exhaust pipe (14), the air pressure pushes the piston block (40) down, which drives the indicator pen (41) to mark the defect location. Step 5: When the high-pressure gas in the exhaust pipe (38) is discharged through the exhaust pipe (14), it drives the whistle to sound and alert the staff; if the overall size is not up to standard, the solenoid valve will be automatically closed after 4 seconds of continuous operation, and only a brief marking process will be performed.

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