Safety valve airtightness detection equipment

Abstract

The invention belongs to the technical field of safety valves, and discloses safety valve airtightness detection equipment which comprises a detection box and a sealing plate, a sealing detection device is arranged in the detection box, a moving structure is arranged at the bottom of the detection box, and a linkage structure is arranged at the top of the sealing plate. According to the sealing detection device, through the multiple sealing structures and the pressure detector, the airtightness of the safety valve can be accurately and reliably detected, and the accuracy of the detection result is ensured. The height of the equipment can be flexibly adjusted through the moving structure, the equipment is suitable for different detection scenes and detection objects, and the universality of the equipment is improved. The linkage structure realizes the synchronous operation of connection and disassembly of the sealing plate and the detection box through a bevel gear transmission system, the tedious degree of manual operation is reduced, the connection stability and reliability are also enhanced, the operation is relatively labor-saving by rotating a bolt through a rotating shaft, the connection stability is relatively good, and actual application and operation are facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of safety valves, and in particular to an air tightness detection device for safety valves. Background Art

[0002] A safety valve is a special valve whose opening and closing parts are in a normally closed state under the action of external force. When the medium pressure in the equipment or pipeline rises above the specified value, the medium is discharged to the outside of the system to prevent the medium pressure in the pipeline or equipment from exceeding the specified value.

[0003] However, in actual applications, some existing testing equipment has a relatively simple structure and poor sealing performance, which can easily lead to inaccurate test results and an inability to reliably determine whether the safety valve is leaking. Some equipment is cumbersome to operate, requiring frequent manual connection and disassembly operations, resulting in low detection efficiency, making it difficult to meet the needs of large-scale production and rapid testing, and hindering practical application and operation. Summary of the Invention

[0004] One of the objects of the present invention is to provide a safety valve air tightness detection device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a safety valve air tightness detection device, comprising a detection box and a sealing plate: a sealing detection device is provided inside the detection box, a movable structure is provided at the bottom of the detection box, and a linkage structure is provided at the top of the sealing plate;

[0006] The sealing detection device includes a conveying pipe, a cylinder, a connecting plate and a pressure detector; the moving structure includes a rotating pipe, a moving block, a slider, a screw, a support seat and a slide rod; the linkage structure includes a threaded hole, a bolt, a rotating shaft, a first bevel gear, a first rotating rod, a second bevel gear, a third bevel gear, a fourth bevel gear, a fifth bevel gear, a sixth bevel gear and a second rotating rod;

[0007] Both sides of the detection box are slidably connected with a delivery pipe, the bottom of the sealing plate is fixedly connected with a sealing strip, the top of the detection box is provided with a first sealing groove, the sealing strip is used in conjunction with the first sealing groove, the bottom of the sealing plate is fixedly installed and connected with a pressure detector, one end of the delivery pipe extends to the interior of the detection box and is fixedly connected with a connecting flange, and two second sealing grooves are provided on the side close to each other of the two connecting flanges.

[0008] Preferably, threaded holes are provided at the four corners of the top of the detection box, the four corners of the bottom of the sealing plate are rotatably connected with bolts, the bolts are threadedly connected to the corresponding threaded holes, the four corners of the top of the sealing plate are rotatably connected with rotating shafts, the rotating shafts are fixedly connected to the corresponding bolts, and the four corners of the top of the sealing plate and located on the outside of the rotating shaft are fixedly connected with a first protective cover.

[0009] Preferably, a first rotating rod is rotatably connected between the corresponding first protective covers, one end of the first rotating rod extends to the interior of the corresponding first protective cover and is fixedly connected to a second bevel gear, and two first bevel gears are fixedly connected to the outer side of the rotating shaft, and the first bevel gears are meshed with the corresponding second bevel gears.

[0010] Preferably, the top of the sealing plate is fixedly connected to a second protective cover, the outer side of the second protective cover is rotatably connected to a second rotating rod, the second rotating rod passes through the second protective cover, and both ends of the second protective cover are fixedly connected to fourth bevel gears, wherein the outer sides of two of the first rotating rods are fixedly connected to third bevel gears, and the third bevel gears are meshed with the corresponding fourth bevel gears.

[0011] Preferably, a first servo motor is installed and connected to the top of the second protective cover, the output shaft of the first servo motor extends to the inside of the second protective cover and is fixedly connected to the sixth bevel gear, the outer side of the second rotating rod is fixedly connected to the fifth bevel gear, and the fifth bevel gear is meshed with the sixth bevel gear.

[0012] Preferably, one end of the delivery pipe extends to the outside of the detection box, and a connecting plate is fixedly connected to the outside of the delivery pipe and located on the outside of the detection box. A triangular support is fixedly connected to the outside of the detection box and located on both sides of the delivery pipe, and a cylinder is fixedly connected to the top of the triangular support, and the piston rod of the cylinder is fixedly connected to the corresponding connecting plate.

[0013] Preferably, the bottom of the detection box is rotatably connected to a rotating tube, the interior of the rotating tube is slidably connected to a moving block, the top of the moving block is fixedly connected to a screw, the top of the screw extends to the interior of the detection box and is rotatably connected to a support seat, the screw is threadedly connected to the detection box, two sliding grooves are provided on the outside of the rotating tube, and sliders are fixedly connected to both sides of the moving block, and the sliders are slidably connected to the corresponding sliding grooves.

[0014] Preferably, the bottom of the detection box is slidably connected to two sliding rods, both sides of the support seat are fixedly connected to fixed blocks, the top of the sliding rod extends to the interior of the detection box and is fixedly connected to the fixed block, the bottom of the sliding rod is fixedly connected to a limiting block, the outer side of the rotating tube is fixedly connected to the seventh bevel gear, the bottom of the detection box is fixedly connected to a fixing plate, one side of the fixing plate is installed and connected to the second servo motor, the fixing plate is rotatably connected to the third rotating rod on the side away from the second servo motor, the output shaft of the second servo motor passes through the fixing plate and is fixedly connected to the third rotating rod, and one end of the third rotating rod away from the second servo motor is fixedly connected to the eighth bevel gear, and the eighth bevel gear is meshed with the seventh bevel gear.

[0015] Preferably, two support frames are fixedly connected to the bottom of the detection box, and support blocks are fixedly connected to the bottom of the support frames. An observation glass is installed and connected to the outside of the detection box, and a control panel is fixedly installed and connected to one side of the detection box. A water inlet pipe is fixedly connected to the side of the detection box away from the observation glass, a drain pipe is fixedly connected to the outside of the detection box and below the water inlet pipe, and an exhaust pipe is fixedly installed and connected to the outside of the detection box and above the drain pipe. The top of the first protective cover is rotatably connected to a hook.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] (1) The present invention can accurately and reliably detect the air tightness of the safety valve through the sealing detection device through multiple sealing structure sealing strips, the first sealing groove, the second sealing groove and the pressure detector, thereby ensuring the accuracy of the detection results. The mobile structure can realize flexible adjustment of the height of the equipment, adapt to different detection scenes and detection objects, and improve the versatility of the equipment. The linkage structure realizes the synchronous operation of connecting and disassembling the sealing plate and the detection box through the bevel gear transmission system, which greatly improves the operating efficiency, reduces the tediousness of manual operation, and also enhances the stability and reliability of the connection. The connection and disassembly of the sealing plate and the detection box are relatively convenient. The bolts are rotated by the rotating shaft, which is relatively labor-saving and has good connection stability.

[0018] (2) The present invention realizes power transmission between the rotating shaft and the first rotating rod through bevel gear transmission, so that multiple components (bolts) can be driven by one operation (rotating the rotating shaft), which improves the synchronization and convenience of operation and further expands the transmission structure. The second rotating rod can be used to achieve unified control of multiple first rotating rods, which is convenient for overall operation, reduces the number of operating steps, and improves the efficiency of connecting and disassembling the sealing plate and the detection box. The first servo motor can be used to control the rotation of the second rotating rod more accurately and efficiently, thereby controlling the connection and disassembly of the sealing plate and the detection box, reducing the intensity of manual labor.

[0019] (3) The present invention facilitates connection with detection components such as safety valves at different positions through the automatic extension and retraction of the conveying pipe, thereby improving the applicability and convenience of operation of the equipment. Driven by the second servo motor, the rotation of the rotating pipe can be controlled more accurately and efficiently, thereby realizing automatic adjustment of the height of the detection equipment, reducing manual labor intensity, and the support frame and support block ensure the stability of the equipment; the observation glass and control panel make it convenient for operators to observe and control the equipment; the water inlet pipe, drainage pipe and exhaust pipe meet the needs of different detection working conditions; the hook provides a certain item placement function, which improves the convenience of using the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0021] Figure 2 It is a schematic diagram of the cross-sectional three-dimensional structure of the present invention.

[0022] Figure 3 It is a cross-sectional structural schematic diagram of the present invention when viewed from above.

[0023] Figure 4 It is a schematic diagram of the three-dimensional bottom-up structure of the present invention.

[0024] Figure 5 This is a schematic diagram of the top view of the sealing plate of the present invention.

[0025] Figure 6 This is a bottom view of the sealing plate structure of the present invention.

[0026] In the figure: 1, detection box; 2, sealing plate; 3, sealing strip; 4, first sealing groove; 5, threaded hole; 6, bolt; 7, rotating shaft; 8, first protective cover; 9, first bevel gear; 10, first rotating rod; 11, second bevel gear; 12, third bevel gear; 13, fourth bevel gear; 14, second protective cover; 15, fifth bevel gear; 16, sixth bevel gear; 17, first servo motor; 18, second rotating rod; 19, hook; 20, pressure detector; 21, delivery pipe; 22, connecting flange; 23, second Sealing groove; 24. Connecting plate; 25. Triangular support; 26. Cylinder; 27. Rotating tube; 28. Moving block; 29. ​​Slider; 30. Screw; 31. Support seat; 32. Fixed block; 33. Slide rod; 34. Limit block; 35. Seventh bevel gear; 36. Third rotating rod; 37. Eighth bevel gear; 38. Fixed plate; 39. Second servo motor; 40. Water inlet pipe; 41. Drain pipe; 42. Support frame; 43. Support block; 44. Observation glass; 45. Control panel; 46. Exhaust pipe; 47. Slide groove. DETAILED DESCRIPTION

[0027] The present invention will be further described below in conjunction with specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0028] In the description of the present invention, it should be noted that, for directional words, such as the terms "center", "horizontal", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and cannot be understood as limiting the specific scope of protection of the present invention.

[0029] It should be noted that the terms "first" and "second" in the description and claims of the present invention are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0030] One of the preferred embodiments of the present invention is as follows Figures 1 to 6 As shown, a safety valve air tightness detection device includes a detection box 1 and a sealing plate 2: a sealing detection device is provided inside the detection box 1, a movable structure is provided at the bottom of the detection box 1, and a linkage structure is provided at the top of the sealing plate 2;

[0031] The sealing detection device includes a delivery pipe 21, a cylinder 26, a connecting plate 24 and a pressure detector 20. The moving structure includes a rotating tube 27, a moving block 28, a slider 29, a screw 30, a support seat 31 and a slide rod 33. The linkage structure includes a threaded hole 5, a bolt 6, a rotating shaft 7, a first bevel gear 9, a first rotating rod 10, a second bevel gear 11, a third bevel gear 12, a fourth bevel gear 13, a fifth bevel gear 15, a sixth bevel gear 16 and a second rotating rod 18.

[0032] Both sides of the detection box 1 are slidably connected with a delivery pipe 21, the bottom of the sealing plate 2 is fixedly connected with a sealing strip 3, the top of the detection box 1 is provided with a first sealing groove 4, the sealing strip 3 is used in conjunction with the first sealing groove 4, the bottom of the sealing plate 2 is fixedly installed and connected with a pressure detector 20, one end of the delivery pipe 21 extends to the interior of the detection box 1 and is fixedly connected with a connecting flange 22, and two second sealing grooves 23 are provided on the side close to the two connecting flanges 22.

[0033] Threaded holes 5 are provided at the four corners of the top of the detection box 1, and bolts 6 are rotatably connected to the four corners of the bottom of the sealing plate 2, and the bolts 6 are threadedly connected to the corresponding threaded holes 5. The four corners of the top of the sealing plate 2 are rotatably connected to the rotating shaft 7, and the rotating shaft 7 is fixedly connected to the corresponding bolt 6. The four corners of the top of the sealing plate 2 and located on the outside of the rotating shaft 7 are fixedly connected to the first protective cover 8.

[0034] The corresponding first protective covers 8 are rotatably connected with the first rotating rods 10, one end of the first rotating rods 10 extends to the interior of the corresponding first protective cover 8 and is fixedly connected with the second bevel gear 11, and the outer side of the rotating shaft 7 is fixedly connected with two first bevel gears 9, and the first bevel gears 9 are meshed with the corresponding second bevel gears 11.

[0035] The top of the sealing plate 2 is fixedly connected to the second protective cover 14, and the outer side of the second protective cover 14 is rotatably connected to the second rotating rod 18. The second rotating rod 18 passes through the second protective cover 14, and both ends of the second protective cover 14 are fixedly connected to the fourth bevel gear 13, wherein the outer sides of the two first rotating rods 10 are fixedly connected to the third bevel gears 12, and the third bevel gear 12 is meshed with the corresponding fourth bevel gear 13.

[0036] A first servo motor 17 is installed on the top of the second protective cover 14. The output shaft of the first servo motor 17 extends to the inside of the second protective cover 14 and is fixedly connected to the sixth bevel gear 16. The outer side of the second rotating rod 18 is fixedly connected to the fifth bevel gear 15. The fifth bevel gear 15 is meshed with the sixth bevel gear 16.

[0037] One end of the delivery pipe 21 extends to the outside of the detection box 1, and a connecting plate 24 is fixedly connected to the outside of the delivery pipe 21 and the outside of the detection box 1. A triangular support 25 is fixedly connected to the outside of the detection box 1 and on both sides of the delivery pipe 21. The top of the triangular support 25 is fixedly connected to a cylinder 26, and the piston rod of the cylinder 26 is fixedly connected to the corresponding connecting plate 24.

[0038] The bottom of the detection box 1 is rotatably connected to a rotating tube 27, and the interior of the rotating tube 27 is slidably connected to a moving block 28. The top of the moving block 28 is fixedly connected to a screw 30, and the top of the screw 30 extends to the interior of the detection box 1 and is rotatably connected to a support seat 31. The screw 30 is threadedly connected to the detection box 1. Two sliding grooves 47 are provided on the outside of the rotating tube 27. Slide blocks 29 are fixedly connected to both sides of the moving block 28, and the slide blocks 29 are slidably connected to the corresponding sliding grooves 47.

[0039] The bottom of the detection box 1 is slidably connected to two sliding rods 33, and both sides of the support seat 31 are fixedly connected to the fixed blocks 32. The tops of the sliding rods 33 extend to the interior of the detection box 1 and are fixedly connected to the fixed blocks 32. The bottoms of the sliding rods 33 are fixedly connected to the limiting blocks 34. The outer side of the rotating tube 27 is fixedly connected to the seventh bevel gear 35. The bottom of the detection box 1 is fixedly connected to a fixing plate 38, and a second servo motor 39 is installed on one side of the fixing plate 38. The side of the fixing plate 38 away from the second servo motor 39 is rotatably connected to the third rotating rod 36. The output shaft of the second servo motor 39 passes through the fixing plate 38 and is fixedly connected to the third rotating rod 36. The end of the third rotating rod 36 away from the second servo motor 39 is fixedly connected to the eighth bevel gear 37, and the eighth bevel gear 37 is meshed with the seventh bevel gear 35.

[0040] Two support frames 42 are fixedly connected to the bottom of the detection box 1, and support blocks 43 are fixedly connected to the bottom of the support frames 42. An observation glass 44 is installed and connected to the outside of the detection box 1, and a control panel 45 is fixedly installed and connected to one side of the detection box 1. A water inlet pipe 40 is fixedly connected to the side of the detection box 1 away from the observation glass 44. A drain pipe 41 is fixedly connected to the outside of the detection box 1 and below the water inlet pipe 40. An exhaust pipe 46 is fixedly installed and connected to the outside of the detection box 1 and above the drain pipe 41. The top of the first protective cover 8 is rotatably connected to a hook 19.

[0041] Working principle:

[0042] During use, when conducting an air tightness test on the safety valve, first place the sealing plate 2 on the top of the test box 1. At this time, the sealing strip 3 at the bottom of the sealing plate 2 is embedded in the first sealing groove 4 at the top of the test box 1 to form a preliminary seal. The delivery pipe 21 can slide on both sides of the test box 1 through the action of the cylinder 26 and the connecting plate 24 on both sides. When it is necessary to connect a detection component such as a safety valve, the piston rod of the cylinder 26 extends, pushing the connecting plate 24 and the delivery pipe 21 connected thereto close to the detection component. The connecting flange 22 at one end of the delivery pipe 21 is connected to the detection component, and the second sealing groove 23 on the connecting flange 22 further ensures the sealing of the connection part. The pressure detector 20 is fixedly mounted on the bottom of the sealing plate 2 and is used to monitor the pressure changes inside the test box 1 in real time to determine the air tightness of the safety valve.

[0043] In the movable structure at the bottom of the inspection box 1, a rotating tube 27 rotates at the bottom of the inspection box 1. A movable block 28 inside the rotating tube 27 slides within the rotating tube 27 by engaging with a slide groove 47 on the outside of the rotating tube 27 via sliders 29 on both sides. The screw 30 at the top of the movable block 28 is threadedly connected to the inspection box 1. When the rotating tube 27 rotates, the screw 30 drives the support base 31 to move up and down, thereby achieving height adjustment of the inspection equipment. Simultaneously, a slide bar 33 connects to the fixed blocks 32 on both sides of the support base 31, guiding and stabilizing the movement of the support base 31.

[0044] In the linkage structure at the top of the sealing plate 2, the threaded holes 5 at the four corners of the top of the detection box 1 are threadedly connected to the bolts 6 that are rotatably connected at the four corners of the bottom of the sealing plate 2, and the rotating shafts 7 at the four corners of the top of the sealing plate 2 are fixedly connected to the bolts 6. When the rotating shaft 7 is rotated, the first rotating rod 10 is driven to rotate through the meshing transmission of the first bevel gear 9 and the second bevel gear 11, and then the meshing transmission of the third bevel gear 12 and the fourth bevel gear 13, as well as the meshing transmission of the fifth bevel gear 15 and the sixth bevel gear 16, is used to realize the synchronous rotation of multiple bolts 6, thereby completing the connection or disassembly operation of the sealing plate 2 and the detection box 1.

[0045] The threaded holes 5 at the four corners of the top of the detection box 1 are threadedly connected to the bolts 6 that are rotatably connected at the four corners of the bottom of the sealing plate 2, thereby achieving the connection and fixation between the sealing plate 2 and the detection box 1. The rotating shafts 7 at the four corners of the top of the sealing plate 2 are fixedly connected to the bolts 6. Rotating the rotating shaft 7 can drive the bolts 6 to rotate. The first rotating rod 10 rotates between the corresponding first protective covers 8, and the second bevel gear 11 at one end thereof is engaged with the first bevel gear 9 on the outside of the rotating shaft 7. When the rotating shaft 7 is rotated, the first bevel gear 9 drives the second bevel gear 11 to rotate, thereby driving the first rotating rod 10 to rotate, and rotating the second rotating rod 18. The first rotating rod 10 can be driven to rotate through the bevel gear transmission. The first servo motor 17 is installed on the top of the second protective cover 14, and its output shaft drives the sixth bevel gear 16 to rotate. The sixth bevel gear 16 is engaged with the fifth bevel gear 15 on the outside of the second rotating rod 18, thereby driving the second rotating rod 18 to rotate. When the cylinder 26 is working, the piston rod retracts and drives the connecting plate 24 and the conveying pipe 21 to slide on both sides of the detection box 1;

[0046] The rotating tube 27 rotates at the bottom of the inspection box 1, and the moving block 28 slides inside the rotating tube 27. The screw 30 at the top of the moving block 28 is threadedly connected to the inspection box 1, and the top of the screw 30 is rotatably connected to the support base 31. The slider 29 slides in a sliding groove 47 on the outside of the rotating tube 27. Rotating the rotating tube 27, through the threaded transmission between the screw 30 and the inspection box 1, can move the support base 31 up and down. The second servo motor 39 is mounted on one side of the fixed plate 38. Its output shaft drives the third rotating rod 36 to rotate. The eighth bevel gear 37 at one end of the third rotating rod 36 meshes with the seventh bevel gear 35 on the outside of the rotating tube 27, thereby driving the rotating tube 27 to rotate. The support frame 42 and support block 43 support the inspection box 1. The observation glass 44 is used to observe the interior of the inspection box 1. The control panel 45 is used to control the operation of the equipment. The water inlet pipe 40, the drain pipe 41, and the exhaust pipe 46 are used for water inlet, drain, and exhaust, respectively. The hook 19 on the top of the first protective cover 8 can be used to hang ropes, etc.

[0047] The above describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and description merely illustrate the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A safety valve air tightness detection device, characterized in that: The invention comprises a detection box (1) and a sealing plate (2): a sealing detection device is provided inside the detection box (1), a movable structure is provided at the bottom of the detection box (1), and a linkage structure is provided at the top of the sealing plate (2); The sealing detection device comprises a conveying pipe (21), a cylinder (26), a connecting plate (24) and a pressure detector (20); the moving structure comprises a rotating pipe (27), a moving block (28), a slider (29), a screw (30), a supporting seat (31) and a sliding rod (33); and the linkage structure comprises a threaded hole (5), a bolt (6), a rotating shaft (7), a first bevel gear (9), a first rotating rod (10), a second bevel gear (11), a third bevel gear (12), a fourth bevel gear (13), a fifth bevel gear (15), a sixth bevel gear (16) and a second rotating rod (18); Both sides of the detection box (1) are slidably connected to a delivery pipe (21), the bottom of the sealing plate (2) is fixedly connected to a sealing strip (3), the top of the detection box (1) is provided with a first sealing groove (4), the sealing strip (3) is used in conjunction with the first sealing groove (4), the bottom of the sealing plate (2) is fixedly installed and connected to a pressure detector (20), one end of the delivery pipe (21) extends to the interior of the detection box (1) and is fixedly connected to a connecting flange (22), and two second sealing grooves (23) are provided on the side close to each other of the two connecting flanges (22).

2. The safety valve air tightness detection device according to claim 1, characterized in that: The four corners of the top of the detection box (1) are each provided with a threaded hole (5); the four corners of the bottom of the sealing plate (2) are each rotatably connected to a bolt (6); the bolts (6) are each threadedly connected to the corresponding threaded hole (5); the four corners of the top of the sealing plate (2) are each rotatably connected to a rotating shaft (7); the rotating shaft (7) is each fixedly connected to the corresponding bolt (6); the four corners of the top of the sealing plate (2) and located outside the rotating shaft (7) are each fixedly connected to a first protective cover (8).

3. The safety valve air tightness detection device according to claim 2, characterized in that: A first rotating rod (10) is rotatably connected between the corresponding first protective covers (8), one end of the first rotating rod (10) extends into the interior of the corresponding first protective cover (8) and is fixedly connected to a second bevel gear (11), and the outer side of the rotating shaft (7) is fixedly connected to two first bevel gears (9), and the first bevel gears (9) are meshed with the corresponding second bevel gears (11).

4. The safety valve air tightness detection device according to claim 3, characterized in that: The top of the sealing plate (2) is fixedly connected to a second protective cover (14); the outer side of the second protective cover (14) is rotatably connected to a second rotating rod (18); the second rotating rod (18) passes through the second protective cover (14); both ends of the second protective cover (14) are fixedly connected to fourth bevel gears (13); the outer sides of two first rotating rods (10) are fixedly connected to third bevel gears (12); the third bevel gears (12) are meshed with the corresponding fourth bevel gears (13).

5. The safety valve air tightness detection device according to claim 4, characterized in that: A first servo motor (17) is installed and connected to the top of the second protective cover (14); an output shaft of the first servo motor (17) extends into the interior of the second protective cover (14) and is fixedly connected to a sixth bevel gear (16); a fifth bevel gear (15) is fixedly connected to the outer side of the second rotating rod (18); and the fifth bevel gear (15) is meshed with the sixth bevel gear (16).

6. The safety valve air tightness detection device according to claim 1, characterized in that: One end of the delivery pipe (21) extends to the outside of the detection box (1), and the outside of the delivery pipe (21) and the outside of the detection box (1) are fixedly connected to a connecting plate (24), and the outside of the detection box (1) and both sides of the delivery pipe (21) are fixedly connected to triangular supports (25), and the top of the triangular supports (25) is fixedly connected to a cylinder (26), and the piston rod of the cylinder (26) is fixedly connected to the corresponding connecting plate (24).

7. The safety valve air tightness detection device according to claim 6, characterized in that: The bottom of the detection box (1) is rotatably connected to a rotating tube (27), the interior of the rotating tube (27) is slidably connected to a moving block (28), the top of the moving block (28) is fixedly connected to a screw (30), the top of the screw (30) extends to the interior of the detection box (1) and is rotatably connected to a support seat (31), the screw (30) is threadedly connected to the detection box (1), two sliding grooves (47) are provided on the outer side of the rotating tube (27), and sliders (29) are fixedly connected to both sides of the moving block (28), and the sliders (29) are slidably connected to the corresponding sliding grooves (47).

8. The safety valve air tightness detection device according to claim 7, characterized in that: The bottom of the detection box (1) is slidably connected to two slide bars (33), both sides of the support seat (31) are fixedly connected to fixed blocks (32), the tops of the slide bars (33) extend to the interior of the detection box (1) and are fixedly connected to the fixed blocks (32), the bottoms of the slide bars (33) are fixedly connected to limit blocks (34), the outer side of the rotating tube (27) is fixedly connected to the seventh bevel gear (35), the bottom of the detection box (1) is fixedly connected to a fixed plate (38), the fixed A second servo motor (39) is installed and connected to one side of the plate (38); a third rotating rod (36) is rotatably connected to a side of the fixed plate (38) away from the second servo motor (39); an output shaft of the second servo motor (39) passes through the fixed plate (38) and is fixedly connected to the third rotating rod (36); an end of the third rotating rod (36) away from the second servo motor (39) is fixedly connected to an eighth bevel gear (37); and the eighth bevel gear (37) is meshed with the seventh bevel gear (35).

9. The safety valve air tightness detection device according to claim 3, characterized in that: The bottom of the detection box (1) is fixedly connected to two support frames (42), and the bottoms of the support frames (42) are fixedly connected to support blocks (43). The outside of the detection box (1) is connected to an observation glass (44), and one side of the detection box (1) is fixedly connected to a control panel (45). The side of the detection box (1) away from the observation glass (44) is fixedly connected to a water inlet pipe (40). The outside of the detection box (1) and below the water inlet pipe (40) are fixedly connected to a drainage pipe (41). The outside of the detection box (1) and above the drainage pipe (41) are fixedly connected to an exhaust pipe (46). The top of the first protective cover (8) is rotatably connected to a hook (19).

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