Bending pin device capable of automatically starting pressure relief in case of overpressure

Abstract

The invention discloses a bending pin device capable of automatically opening pressure relief during overpressure, which comprises a connecting mechanism, and the connecting mechanism comprises a switch valve body, a first communicating pipe and a second communicating pipe. During use, the equipment can be stably arranged at a specified use position through the first communicating pipe and the second communicating pipe, the first communicating pipe is connected with the upstream pipeline, the second communicating pipe is connected with the downstream pipeline, at the moment, the switching valve is in a closed state, and then different pressures can be presented in the first communicating pipe and the second communicating pipe; meanwhile, the internal pressure of the first communicating pipe can be transmitted to the interior of the second sealing frame through the second guide pipe, and the internal pressure of the second communicating pipe can be transmitted to the interior of the first sealing frame through the first guide pipe; and internal pressure of the first communicating pipe and the second communicating pipe is conveyed to two sides of the movable plug in the sealing pipe through the second guide pipe and the first guide pipe.

Description

Technical Field

[0001] The invention belongs to the technical field of pressure relief devices, and in particular relates to a bending pin device which automatically opens to relieve pressure when overpressure occurs. Background Art

[0002] In order to protect pressure vessels, pipelines and other equipment, it is often necessary to install a safety device at a specific location that can open and release pressure under overpressure conditions. The safety device is designed to prevent the system from overpressure and cause safety hazards.

[0003] However, in the prior art, pressure sensors are usually used to detect the pressure in pressure vessels, pipelines and other equipment. During long-term use, regular inspection and maintenance are required to ensure that the pressure sensors are working properly, which increases the actual monitoring and use costs. When the pressure sensor is affected by the surrounding environment during use, the signal transmission between the pressure sensor and the control system is abnormal, or the signal transmission between the control system and the valve is abnormal, it is easy to cause the pressure to exceed the set value but the valve does not operate as expected, which brings overpressure risks to the pressure vessels, pipelines and other equipment. At the same time, the existing pressure relief equipment can only be used in designated use occasions, and cannot adjust its own structure according to actual use needs to meet the use of different occasions. Summary of the invention

[0004] The purpose of the present invention is to provide a bending pin device that can control pressure, avoid the influence of different environmental factors on monitoring, efficiently monitor pressure, and adjust its own structure according to actual usage scenarios, thereby meeting different usage scenarios and automatically opening for pressure relief when overpressure occurs.

[0005] The technical solution adopted by the present invention is as follows: a bending pin device that automatically opens to release pressure when overpressure occurs, comprising: a connecting mechanism, the connecting mechanism comprising a switch valve body, a first connecting pipe and a second connecting pipe, the first connecting pipe and the second connecting pipe are respectively connected to the two ends of the switch valve body; An adjustment mechanism, the adjustment mechanism comprising two base frames, two mounting frames, a first sealing frame, a second sealing frame, a sealing tube, a movable plug, a push rod, an extension frame and an adjustment component, the two mounting frames are fixedly connected to the tops of the corresponding base frames by bolts, the first sealing frame is fixedly connected to the inside of one of the mounting frames, the second sealing frame is fixedly connected to the inside of the other mounting frame, the sealing tube is inserted into the first sealing frame and the second sealing frame, the movable plug is slidably embedded in the sealing tube, the extension frame is threadedly connected to the outer surface of one side of the first sealing frame, the push rod is fixedly connected to the outer surface of one side of the movable plug, and the adjustment component is arranged on the first sealing frame, the second sealing frame, the base frame and the extension frame; and Control mechanism, the control mechanism includes a mounting frame, a rotating component and a reset component. A guide plate is fixedly connected to the inner top surface of the mounting frame. A limiting groove is formed at the bottom of the guide plate. The mounting frame is fixedly connected between the tops of two bottom frames by bolts. A linkage frame is rotatably connected to the inner bottom surface of the mounting frame. A push frame is slidably sleeved on the outer surface of the linkage frame. A support spring is arranged inside the push frame. The top of the push frame is slidably inserted into the limiting groove. A clamping strip is rotatably connected to the bottom of the push frame. The rotating component is arranged on the mounting frame, and the reset component is arranged on the mounting frame.

[0006] Wherein, the inside of the extension frame communicates with the inside of the first sealing frame. A moving port is formed on the outer surface of one side of the extension frame. One end of the abutting rod extends into the extension frame.

[0007] Wherein, the adjusting component includes an adjusting frame, an adjusting rod, a bending pin body, a first conduit and a second conduit. The adjusting frame is threadedly connected to one end of the extension frame. One end of the abutting rod extends into the adjusting frame. The bending pin body is slidably inserted into one end of the abutting rod. The adjusting rod is sleeved on the outer surface of the abutting rod. The first conduit is communicatively arranged on the outer surface of one side of the first sealing frame. The second conduit is communicatively arranged on the outer surface of one side of the second sealing frame.

[0008] Wherein, one end of the adjusting rod slidably penetrates through the moving port. One end of the first conduit extends into the corresponding bottom frame, and one end of the first conduit extends into the first communication pipe. One end of the second conduit extends into the corresponding bottom frame, and one end of the second conduit extends into the second communication pipe.

[0009] Wherein, a retaining bolt is threadedly connected to the outer surface of one side of the adjusting frame. One end of the retaining bolt abuts against the outer surface of one side of the bending pin body.

[0010] Wherein, one end of the adjusting rod is slidably inserted into the linkage frame. One end of the clamping strip slidably penetrates through the inner wall of one side of the mounting frame.

[0011] Wherein, the reset component includes two sliding rods, a threaded pipe, a moving threaded rod and a push bar. The two sliding rods are fixedly connected between the opposite outer surfaces of the mounting frame and the guide plate. The threaded pipe is rotatably connected between the opposite outer surfaces of the two sides of the mounting frame. A reset worm gear is sleeved on the outer surface of the threaded pipe. The moving threaded rod is threadedly connected to the inside of the threaded pipe. The push bar is fixedly connected to one end of the moving threaded rod, and one end of the push bar extends into the mounting frame.

[0012] Wherein, a reset spring is slidably sleeved on the outer surface of each sliding rod. A reset worm is rotatably connected to the top of the mounting frame. The reset worm meshes with the reset worm gear.

[0013] Wherein, the rotating member includes a moving rack, a rotating gear, a linkage shaft, and an extension shaft. The moving rack is slidably sleeved between the outer surfaces of two sliding rods. The linkage shaft is rotatably connected to the inner bottom surface of the mounting frame. The rotating gear is sleeved on the outer surface of the linkage shaft, and the rotating gear meshes with the moving rack. The extension shaft is slidably inserted into the bottom end of the linkage shaft. The bottom end of the extension shaft is clamped with the control end of the on-off valve body. The bottom end of the linkage shaft extends to the outside of the mounting frame.

[0014] A usage method of a bent pin device that automatically opens for pressure relief during overpressure includes the following steps: S1. Pressure release: Through the first connecting pipe and the second connecting pipe, the device can be stably set at the designated use position. Connect the first connecting pipe to the upstream pipeline and the second connecting pipe to the downstream pipeline. At this time, the on-off valve is in the closed state. Thus, different pressures can be presented inside the first connecting pipe and the second connecting pipe. At the same time, the pressure inside the first connecting pipe can be transmitted to the inside of the second sealing frame through the second conduit, and the pressure inside the second connecting pipe can be transmitted to the inside of the first sealing frame through the first conduit. Then, when there is a large difference in pressure between the upstream pipeline and the downstream pipeline of the connecting mechanism, the pressures inside the first connecting pipe and the second connecting pipe will be conveyed to both sides of the moving plug inside the sealing pipe through the second conduit and the first conduit. Then, when the pressure difference between the first connecting pipe and the second connecting pipe is large, the excessive pressure in the upstream pipeline will squeeze the moving plug to move towards the inside of the first sealing frame. Subsequently, the moving plug will push the resisting rod to move towards the extension frame side. At the same time, under the support of the retaining bolt, the continuously moving resisting rod will apply a force to squeeze the bent pin body until the bent pin body reaches its load limit and breaks. At this time, the resisting rod will quickly move towards the extension frame side under the push of the moving plug. At the same time, one end of the adjusting rod can drive one end of the linkage frame to deflect. The deflected linkage frame drives the pushing frame to move along the limiting groove, enabling the pushing frame to drive the latch strip away from the moving rack, so that the latch strip can release the position restriction on the moving rack. Then, under the support of the return spring, the moving rack will quickly move away from the linkage frame. Subsequently, the moving rack can cooperate with the rotating gear to drive the linkage shaft to rotate. Finally, the rotating linkage shaft rotates and adjusts the control end of the on-off valve body through the extension shaft, so that the on-off valve body switches from the off state to the connected state. Thus, the inside of the first connecting pipe and the inside of the second connecting pipe are connected, and the excessive pressure inside the first connecting pipe can be quickly released into the second connecting pipe. Subsequently, the pressure in the upstream pipeline can be safely released into the downstream pipeline; S2. Restoration for use: After the pressure is released, by rotating the reset worm, the rotating reset worm and the reset worm gear can drive the threaded pipe to rotate. Then, the rotating threaded pipe drives the moving threaded rod to move, and further the moving threaded rod can squeeze the moving push bar, so that the push bar can squeeze and push the moving rack to restore its original use state. At this time, the rotating gear will turn off the switch valve body again through the linkage shaft and the extension shaft. At the same time, by replacing the bent pin body, the use positions of the moving plug and the abutting rod are reset. Then, the clamping bar can fix and limit one end of the moving rack again; S3. Scene switching: According to the actual use occasion, different specifications of switch valve bodies can be replaced, so that the equipment can meet different use environments. At the same time, by replacing different specifications of bent pin bodies, the equipment can meet different pressure monitoring requirements. And through the cooperation of the first connecting pipe and the second connecting pipe with the existing pipelines, the equipment can be conveniently and firmly set at the designated use position.

[0015] In summary, due to the adoption of the above technical solutions, the beneficial effects of the present invention are: (1) In the present invention, when in use, the first connecting pipe and the second connecting pipe can be used to stably set the device in the designated use position, so that the first connecting pipe is connected to the upstream pipeline, and the second connecting pipe is connected to the downstream pipeline. At this time, the switch valve is in a closed state, so that the first connecting pipe and the second connecting pipe can present different pressures. At the same time, the internal pressure of the first connecting pipe can be transmitted to the second sealing frame through the second conduit, and the internal pressure of the second connecting pipe can be transmitted to the first sealing frame through the first conduit. When there is a large difference in pressure between the upstream pipeline and the downstream pipeline of the connecting mechanism, the internal pressure of the first connecting pipe and the second connecting pipe will be transmitted to the two sides of the movable plug inside the sealing pipe through the second conduit and the first conduit. When there is a large difference in pressure between the first connecting pipe and the second connecting pipe, the excessive pressure of the upstream pipeline will squeeze the movable plug to move toward the first sealing frame, and then the movable plug will push the push rod to move toward the side of the extension frame. At the same time, under the support of the retaining bolt, the movable plug is continuously The movable support rod will apply pressure to the bending pin body until the bending pin body reaches the load limit and breaks. At this time, the support rod will quickly move to one side of the extension frame under the push of the moving plug, and at the same time, one end of the adjusting rod can drive one end of the linkage frame to deflect. The deflected linkage frame drives the push frame to move along the limit groove, so that the push frame can drive the card strip away from the moving rack, so that the card strip can release the position restriction on the moving rack, and then under the support of the return spring, the moving rack will quickly move away from the linkage frame, and then the moving rack can cooperate with the rotating gear to drive the linkage shaft to rotate, and finally the rotating linkage shaft rotates the control end of the switch valve body through the extension shaft to adjust the switch valve body, so that the switch valve body is switched from the closed state to the connected state, and then the interior of the first connecting pipe and the interior of the second connecting pipe are connected, so that the excessive pressure inside the first connecting pipe can be quickly released to the second connecting pipe, and then the pressure of the upstream pipeline can be safely released to the downstream pipeline, so that the equipment can efficiently monitor and control the safety pressure.

[0016] (2) In the present invention, when in use, according to the actual use occasion, the switch valve body of different specifications can be replaced, so that the device can meet different use environments. At the same time, by replacing the bending pin body of different specifications, the device can meet different pressure monitoring requirements. In addition, the first connecting pipe and the second connecting pipe can be used in conjunction with the existing pipeline to conveniently and stably set the device in the designated use position, so that the device can efficiently realize its intended functions.

[0017] (3) In the present invention, during use, after the pressure release is completed, by rotating the reset worm, the rotating reset worm and the reset worm gear cooperate to drive the threaded tube to rotate. Furthermore, the rotating threaded tube drives the moving threaded rod to move, and then the moving threaded rod can squeeze the moving push bar, enabling the push bar to squeeze and push the moving rack to restore its original use state. At this time, the rotating gear will turn off the switch valve body again through the linkage shaft and the extension shaft. Meanwhile, by replacing the bent pin body, the use positions of the moving plug and the rod are reset. Subsequently, the latch can fix and limit one end of the moving rack again, enabling the device to be used again and efficiently realizing its intended functions. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is the first perspective three-dimensional view of the present invention; Figure 2 is the second perspective three-dimensional view of the present invention; Figure 3 is the first perspective partially sectional three-dimensional view of the present invention; Figure 4 is the three-dimensional view of the connection mechanism of the present invention; Figure 5 is the first perspective sectional three-dimensional view of the adjustment mechanism of the present invention; Figure 6 is the first perspective sectional expanded three-dimensional view of the adjustment mechanism of the present invention; Figure 7 is of the present invention Figure 6 enlarged view of part A; Figure 8 is the second perspective sectional expanded three-dimensional view of the adjustment mechanism of the present invention; Figure 9 is the first perspective sectional three-dimensional view of the control mechanism of the present invention; Figure 10 is of the present invention Figure 9 enlarged view of part B; Figure 11 is the first perspective sectional expanded three-dimensional view of the control mechanism of the present invention; Figure 12 is of the present invention Figure 11 enlarged view of part C; Figure 13 is the second perspective sectional expanded three-dimensional view of the control mechanism of the present invention.

[0019] Reference numerals in the drawings: 1, connection mechanism; 101, switch valve body; 102, first connecting pipe; 103, second connecting pipe; 2. Adjusting mechanism; 201. Chassis; 202. Second conduit; 203. First conduit; 204. Mounting frame; 205. First sealing frame; 206. Second sealing frame; 207. Sealing tube; 208. Moving plug; 209. Pushing rod; 210. Adjusting rod; 211. Extension frame; 212. Adjusting frame; 213. Retaining bolt; 214. Bending pin body 3. Control mechanism; 301. Mounting bracket; 302. Guide plate; 303. Clamping strip; 304. Linking frame; 305. Pushing frame; 306. Supporting spring; 307. Moving rack; 308. Slide bar; 309. Return spring; 310. Linking shaft; 311. Rotating gear; 312. Extension shaft; 313. Threaded tube; 314. Return worm; 315. Moving threaded rod; 316. Pushing strip Specific implementation manner

[0020] In order to make the objectives, technical solutions and advantages of the present invention more clear and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0021] Example 1. Please refer to Figures 1 - 3 A bending pin device that automatically opens and relieves pressure during overpressure is composed of a connecting mechanism 1, an adjusting mechanism 2 and a control mechanism 3.

[0022] Specifically described as follows: Please refer to Figure 4 The connecting mechanism 1 includes a switch valve body 101, a first connecting pipe 102 and a second connecting pipe 103. The first connecting pipe 102 and the second connecting pipe 103 are respectively and communicatively arranged at both ends of the switch valve body 101. Through the first connecting pipe 102 and the second connecting pipe 103, the device can be firmly set at the designated use position, the first connecting pipe 102 is connected to the upstream pipeline, and the second connecting pipe 103 is connected to the downstream pipeline. At this time, the switch valve is in a closed state, so that different pressures can be presented inside the first connecting pipe 102 and the second connecting pipe 103; Please refer to Figures 5 - 8, the adjusting mechanism 2 includes two chassis 201, two mounting frames 204, a first sealing frame 205, a second sealing frame 206, a sealing pipe 207, a moving plug 208, a resisting rod 209, an extension frame 211 and an adjusting component. The two mounting frames 204 are fixedly connected to the tops of the corresponding chassis 201 by bolts. The first sealing frame 205 is fixedly connected to the inside of one of the mounting frames 204. The second sealing frame 206 is fixedly connected to the inside of the other mounting frame 204. The sealing pipe 207 is inserted into the first sealing frame 205 and the second sealing frame 206. The moving plug 208 is slidably embedded in the sealing pipe 207. The extension frame 211 is threadedly connected to the outer surface of one side of the first sealing frame 205. The resisting rod 209 is fixedly connected to the outer surface of one side of the moving plug 208. The adjusting component is arranged on the first sealing frame 205, the second sealing frame 206, the chassis 201 and the extension frame 211. The inside of the extension frame 211 is communicated with the inside of the first sealing frame 205. A moving port is formed on the outer surface of one side of the extension frame 211. One end of the resisting rod 209 extends into the extension frame 211. The adjusting component includes an adjusting frame 212, an adjusting rod 210, a bent pin body 214, a first conduit 203 and a second conduit 202. The adjusting frame 212 is threadedly connected to one end of the extension frame 211. One end of the resisting rod 209 extends into the adjusting frame 212. The bent pin body 214 is slidably inserted into one end of the resisting rod 209. The adjusting rod 210 is sleeved on the outer surface of the resisting rod 209. The first conduit 203 is communicatively arranged on the outer surface of one side of the first sealing frame 205. The second conduit 202 is communicatively arranged on the outer surface of one side of the second sealing frame 206. One end of the adjusting rod 210 slidably penetrates through the moving port. One end of the first conduit 203 extends into the corresponding chassis 201 and further extends into the first connecting pipe 102. One end of the second conduit 202 extends into the corresponding chassis 201 and further extends into the second connecting pipe 103. A retaining bolt 213 is threadedly connected to the outer surface of one side of the adjusting frame 212. One end of the retaining bolt 213 abuts against the outer surface of one side of the bent pin body 214. One end of the adjusting rod 210 is slidably inserted into the inside of the linkage frame 304. One end of the clamping strip 303 slidably penetrates through the inner wall of one side of the mounting frame 301. Excessive pressure in the upstream pipeline will squeeze the moving plug 208 to move into the first sealing frame 205, and then the moving plug 208 will push the resisting rod 209 to move towards one side of the extension frame 211. At the same time, under the support of the retaining bolt 213, the continuously moving resisting rod 209 will exert pressure on the bent pin body 214 until the bent pin body 214 reaches its load-bearing limit and breaks. At this time, the resisting rod 209 will quickly move towards one side of the extension frame 211 under the push of the moving plug 208; Please refer to Figures 9 - 13, the control mechanism 3 includes a mounting frame 301, a rotating component, and a reset component. A guide plate 302 is fixedly connected to the inner top surface of the mounting frame 301. A limiting groove is formed at the bottom of the guide plate 302. The mounting frame 301 is fixedly connected between the tops of two chassis 201 by bolts. A linkage frame 304 is rotatably connected to the inner bottom surface of the mounting frame 301. A push frame 305 is slidably sleeved on the outer surface of the linkage frame 304. A support spring 306 is arranged inside the push frame 305. The top of the push frame 305 is slidably inserted into the limiting groove. A latch 303 is rotatably connected to the bottom of the push frame 305. The rotating component is arranged on the mounting frame 301, and the reset component is arranged on the mounting frame 301. The reset component includes two sliding rods 308, a threaded tube 313, a moving threaded rod 315, and a push bar 316. The two sliding rods 308 are fixedly connected between the opposite outer surfaces of the mounting frame 301 and the guide plate 302. The threaded tube 313 is rotatably connected between the opposite outer surfaces of the two sides of the mounting frame 301. A reset worm gear is sleeved on the outer surface of the threaded tube 313. The moving threaded rod 315 is threadedly connected to the inside of the threaded tube 313. The push bar 316 is fixedly connected to one end of the moving threaded rod 315, and one end of the push bar 316 extends into the mounting frame 301. A reset spring 309 is slidably sleeved on the outer surface of each sliding rod 308. A reset worm 314 is rotatably connected to the top of the mounting frame 301. The reset worm 314 meshes with the reset worm gear. The rotating component includes a moving rack 307, a rotating gear 311, a linkage shaft 310, and an extension shaft 312. The moving rack 307 is slidably sleeved between the outer surfaces of the two sliding rods 308. The linkage shaft 310 is rotatably connected to the inner bottom surface of the mounting frame 301. The rotating gear 311 is sleeved on the outer surface of the linkage shaft 310, and the rotating gear 311 meshes with the moving rack 307. The extension shaft 312 is slidably inserted into the bottom end of the linkage shaft 310. The bottom end of the extension shaft 312 is clamped with the control end of the on-off valve body 101. The bottom end of the linkage shaft 310 extends outside the mounting frame 301. One end of the adjusting rod 210 can drive one end of the linkage frame 304 to deflect. The deflected linkage frame 304 drives the push frame 305 to move along the limiting groove, so that the push frame 305 can drive the latch 303 away from the moving rack 307, enabling the latch 303 to release the position restriction on the moving rack 307. Then, supported by the reset spring 309, the moving rack 307 will quickly move away from the linkage frame 304. Subsequently, the moving rack 307 can cooperate with the rotating gear 311 to drive the linkage shaft 310 to rotate. Finally, the rotating linkage shaft 310 rotates the control end of the on-off valve body 101 through the extension shaft 312, switching the on-off valve body 101 from the off state to the connected state. Thus, the inside of the first communication pipe 102 and the inside of the second communication pipe 103 are connected, enabling the excessive pressure inside the first communication pipe 102 to be quickly released into the second communication pipe 103. When the pressure release is completed, by rotating the reset worm 314, the rotating reset worm 314 can cooperate with the reset worm gear to drive the threaded tube 313 to rotate. Then, the rotating threaded tube 313 drives the moving threaded rod 315 to move.Subsequently, the moving threaded rod 315 can squeeze the moving push bar 316, enabling the push bar 316 to squeeze and push the moving rack 307 to restore its original use state. At this time, the rotating gear 311 will re-close the switch valve body 101 through the linkage shaft 310 and the extension shaft 312. At the same time, the use positions of the moving plug 208 and the abutting rod 209 are reset through the replacement bending pin body 214, and then the clamping bar 303 can fix and limit one end of the moving rack 307 again.

[0023] The following is a detailed description of the usage method of a bending pin device that automatically opens and relieves pressure during overpressure provided by the embodiments of the present invention. The usage method includes the following steps: Step 1. Pressure release: The device can be stably set at the specified use position through the first connecting pipe 102 and the second connecting pipe 103. Connect the first connecting pipe 102 to the upstream pipeline and the second connecting pipe 103 to the downstream pipeline. At this time, the switch valve is in the closed state. As a result, different pressures can be presented inside the first connecting pipe 102 and the second connecting pipe 103. At the same time, the pressure inside the first connecting pipe 102 can be transmitted to the inside of the second sealing frame 206 through the second conduit 202, and the pressure inside the second connecting pipe 103 can be transmitted to the inside of the first sealing frame 205 through the first conduit 203. Then, when there is a large pressure difference between the upstream pipeline and the downstream pipeline of the connecting mechanism 1, the pressures inside the first connecting pipe 102 and the second connecting pipe 103 will be transmitted to both sides of the moving plug 208 inside the sealing pipe 207 through the second conduit 202 and the first conduit 203. Then, when the pressure difference between the first connecting pipe 102 and the second connecting pipe 103 is large, the excessive pressure in the upstream pipeline will squeeze the moving plug 208 to move into the first sealing frame 205. Subsequently, the moving plug 208 will push the abutting rod 209 to move towards the extension frame 211. At the same time, under the support of the retaining bolt 213, the continuously moving abutting rod 209 will exert pressure on the bending pin body 214 until the bending pin body 214 reaches the bearing limit and breaks. At this time, the abutting rod 209 will quickly move towards the extension frame 211 under the push of the moving plug 208. At the same time, one end of the adjusting rod 210 can drive one end of the linkage frame 304 to deflect. The deflected linkage frame 304 drives the push frame 305 to move along the limit groove, so that the push frame 305 can drive the latch 303 away from the moving rack 307, enabling the latch 303 to release the position restriction on the moving rack 307. Then, under the support of the return spring 309, the moving rack 307 will quickly move away from the linkage frame 304. Subsequently, the moving rack 307 can cooperate with the rotating gear 311 to drive the linkage shaft 310 to rotate. Finally, the rotating linkage shaft 310 rotates the control end of the switch valve body 101 through the extension shaft 312, switching the switch valve body 101 from the off state to the connected state. As a result, the inside of the first connecting pipe 102 and the inside of the second connecting pipe 103 are connected, enabling the excessive pressure inside the first connecting pipe 102 to be quickly released into the second connecting pipe 103. Subsequently, the pressure in the upstream pipeline can be safely released into the downstream pipeline, enabling the device to efficiently monitor and control the safe pressure; Step 2, Resume use: After the pressure is released, by rotating the reset worm 314, the rotating reset worm 314 can drive the threaded tube 313 to rotate in cooperation with the reset worm gear, so that the rotating threaded tube 313 drives the moving threaded rod 315 to move, and then the moving threaded rod 315 can squeeze the moving push bar 316, so that the push bar 316 can squeeze and push the moving rack 307 to resume its original use state. At this time, the rotating gear 311 will turn off the switch valve body 101 again through the linkage shaft 310 and the extension shaft 312. At the same time, the use positions of the moving plug 208 and the abutting rod 209 are reset by replacing the bent pin body 214, so that the clamping bar 303 can fix and limit one end of the moving rack 307 again, enabling the device to be used again and enabling the device to efficiently realize its due functions; Step 3, Scene adjustment: According to the actual use occasion, different specifications of the switch valve body 101 can be replaced, so that the device can meet different use environments. At the same time, by replacing different specifications of the bent pin body 214, the device can meet different pressure monitoring requirements. And through the cooperation of the first communication pipe 102 and the second communication pipe 103 with the existing pipeline, the device can be conveniently and firmly set at the designated use position, enabling the device to efficiently realize its due functions.

[0024] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An automatic pressure relief bending pin device that is automatically opened for pressure relief when overpressure occurs, comprising: Connecting mechanism (1), the connecting mechanism (1) includes a switching valve body (101), a first connecting pipe (102) and a second connecting pipe (103), the first connecting pipe (102) and the second connecting pipe (103) are respectively connected and arranged at both ends of the switching valve body (101), and is characterized in that it further includes: Adjusting mechanism (2) for regulating the internal pressure of the first connecting pipe (102) and the second connecting pipe (103); and Control mechanism (3) for cooperating with the adjusting mechanism (2) to regulate the internal pressure of the first connecting pipe (102) and the second connecting pipe (103).

2. The bending pin device that automatically opens and relieves pressure under overpressure as described in claim 1, wherein: The adjusting mechanism (2) includes two chassis (201), two mounting frames (204), a first sealing frame (205), a second sealing frame (206), a sealing pipe (207), a moving plug (208), a resisting rod (209), an extension frame (211) and an adjusting component. The two mounting frames (204) are fixedly connected to the tops of the corresponding chassis (201) by bolts. The first sealing frame (205) is fixedly connected to the inside of one of the mounting frames (204). The second sealing frame (206) is fixedly connected to the inside of the other mounting frame (204). The sealing pipe (207) is inserted into the inside of the first sealing frame (205) and the second sealing frame (206). The moving plug (208) is slidably embedded in the sealing pipe (207). The extension frame (211) is threadedly connected to the outer surface of one side of the first sealing frame (205). The resisting rod (209) is fixedly connected to the outer surface of one side of the moving plug (208). The adjusting component is arranged on the first sealing frame (205), the second sealing frame (206), the chassis (201) and the extension frame (211); The control mechanism (3) includes a mounting frame (301), a rotating component and a resetting component. The inner top surface of the mounting frame (301) is fixedly connected with a guide plate (302). A limiting groove is opened at the bottom of the guide plate (302). The mounting frame (301) is fixedly connected to the tops between the two chassis (201) by bolts. The inner bottom surface of the mounting frame (301) is rotatably connected with a linkage frame (304). A pushing frame (305) is slidably sleeved on the outer surface of the linkage frame (304). A support spring (306) is arranged inside the pushing frame (305). The top of the pushing frame (305) is slidably inserted into the limiting groove. The bottom of the pushing frame (305) is rotatably connected with a clamping strip (303). The rotating component is arranged on the mounting frame (301). The resetting component is arranged on the mounting frame (301).

3. The bending pin device that automatically opens for pressure relief under overpressure according to claim 2, characterized in that: The inside of the extension frame (211) is communicated with the inside of the first sealing frame (205). A moving port is opened on the outer surface of one side of the extension frame (211). One end of the resisting rod (209) extends into the extension frame (211).

4. The bending pin device that automatically opens for pressure relief under overpressure as described in claim 3, wherein: The adjusting member includes an adjusting frame (212), an adjusting rod (210), a bent pin body (214), a first conduit (203) and a second conduit (202). The adjusting frame (212) is threadedly connected to one end of the extending frame (211). One end of the abutting rod (209) extends into the adjusting frame (212). The bent pin body (214) is slidably inserted into one end of the abutting rod (209). The adjusting rod (210) is sleeved on the outer surface of the abutting rod (209). The first conduit (203) is communicatively arranged on the outer surface of one side of the first sealing frame (205). The second conduit (202) is communicatively arranged on the outer surface of one side of the second sealing frame (206).

5. The bending pin device capable of automatically opening and relieving pressure under overpressure according to claim 4, wherein: One end of the adjusting rod (210) slidably penetrates through the moving port. One end of the first conduit (203) extends into the corresponding chassis (201), and one end of the first conduit (203) extends into the first connecting pipe (102). One end of the second conduit (202) extends into the corresponding chassis (201), and one end of the second conduit (202) extends into the second connecting pipe (103).

6. The bending pin device for automatically opening and relieving pressure during overpressure as described in claim 5, wherein: A retaining bolt (213) is threadedly connected to the outer surface of one side of the adjusting frame (212). One end of the retaining bolt (213) abuts against the outer surface of one side of the bent pin body (214).

7. The bending pin device that automatically opens for pressure relief during overpressure as described in claim 6, characterized in that: One end of the adjusting rod (210) is slidably inserted into the interior of the linkage frame (304). One end of the strip (303) slidably penetrates through the inner wall of one side of the mounting frame (301).

8. The bending pin device that automatically opens for pressure relief under overpressure as described in claim 7, wherein: The reset member includes two sliding rods (308), a threaded pipe (313), a moving threaded rod (315) and a pushing strip (316). The two sliding rods (308) are fixedly connected between the opposite outer surfaces of the mounting frame (301) and the guiding plate (302). The threaded pipe (313) is rotatably connected between the opposite outer surfaces of both sides of the mounting frame (301). A reset worm gear is sleeved on the outer surface of the threaded pipe (313). The moving threaded rod (315) is threadedly connected to the interior of the threaded pipe (313). The pushing strip (316) is fixedly connected to one end of the moving threaded rod (315), and one end of the pushing strip (316) extends into the mounting frame (301).

9. The bending pin device that automatically opens for pressure relief during overpressure as described in claim 8, wherein: A reset spring (309) is slidably sleeved on the outer surface of each sliding rod (308). A reset worm (314) is rotatably connected to the top of the mounting frame (301). The reset worm (314) meshes with the reset worm gear.

10. The bending pin device that automatically opens for pressure relief during overpressure as described in claim 9, wherein: The rotating component includes a moving rack (307), a rotating gear (311), a linkage shaft (310), and an extension shaft (312). The moving rack (307) is slidably sleeved between the outer surfaces of two slide bars (308). The linkage shaft (310) is rotatably connected to the inner bottom surface of the mounting bracket (301). The rotating gear (311) is sleeved on the outer surface of the linkage shaft (310), and the rotating gear (311) meshes with the moving rack (307). The extension shaft (312) is slidably inserted into the bottom end of the linkage shaft (310). The bottom end of the extension shaft (312) is snap-connected to the control end of the switching valve body (101). The bottom end of the linkage shaft (310) extends to the outside of the mounting bracket (301).

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