Chemical raw material closed conveying leak-proof safety protection device

Abstract

The present application belongs to the technical field of chemical safety, especially to a chemical raw material closed conveying anti-leakage safety protection device. The liquid chemical pipeline bending part is prone to partial thinning and leakage due to flow mutation, scouring and corrosion superposition, endangering safety and environmental protection. The present application proposes the following scheme, including a support, the upper side of the support is provided with a storage bin, and the discharge end of the storage bin is provided with one end of a conveying pipe. The disclosed chemical raw material closed conveying anti-leakage safety protection device has the advantages that the combined semi-circular sealing ring and the bellows are used to construct the initial seal, effectively preventing leakage, and the visual sensing is used for real-time monitoring, driving the bundling mechanism to dynamically tighten and partition isolation, cooperating with the movable sleeve ring to displace along the pipe wall, rapidly expanding the bellows to cover the straight pipe leakage point, realizing the simultaneous plugging of the bending and straight pipe, forming multi-level three-dimensional protection, and significantly enhancing the emergency treatment and conveying reliability under complex leakage.

Description

Technical Field

[0001] This invention relates to the field of chemical safety technology, and in particular to a closed-loop safety protection device for preventing leakage during the transport of chemical raw materials. Background Technology

[0002] Chemical raw materials are the material basis used in the chemical industry to produce various chemical products. They are mainly divided into two categories: organic chemical raw materials and inorganic chemical raw materials, with more than 5 million types worldwide. For liquid chemical raw materials, there are various transportation methods, including pipelines, road tank cars, railway tank cars, tank ships, and small-package transportation in drums or liquid bags. Among them, pipeline transportation is the preferred choice when conditions permit due to its safety, environmental protection, and efficiency, which can significantly improve transportation safety and reduce losses. These chemical raw materials have extremely wide applications and are an important foundation of the national economy. Their downstream products permeate all aspects of life and are mainly used in the production of plastics, synthetic fibers, synthetic rubber, coatings, dyes, pharmaceuticals, pesticides, fertilizers, detergents, etc., and are constantly expanding into emerging and high-value fields such as new energy, biodegradable materials, and high-performance materials.

[0003] Currently, liquid chemical raw materials are generally transported through closed pipelines. When the material flows through the bend of the pipeline, the flow direction is forced to change, and the scouring force in this area is significantly higher than that in the straight section. Under long-term operation, the wall of the bend is prone to local thinning or erosion under the combined action of high-speed fluid impact and media corrosiveness, which can lead to raw material leakage accidents, causing environmental pollution, resource waste, and even threatening personnel safety and the stable operation of production facilities. Summary of the Invention

[0004] This invention discloses a closed-loop safety protection device for preventing leakage of chemical raw materials, which aims to solve the technical problem in the background art where the sudden change in flow direction at the bend of liquid chemical pipelines leads to the superposition of erosion and corrosion, resulting in local thinning and leakage, which endangers safety and environmental protection.

[0005] This invention proposes a closed-loop safety protection device for preventing leakage during the conveying of chemical raw materials, comprising: A support frame is provided with a storage bin on its upper side, and a conveying pipe is provided at the discharge end of the storage bin. A leak-proof component is installed on the outer wall of the bend of the conveying pipe. The leak-proof component includes two collar groove plates, both of which are sleeved on the outer wall of the conveying pipe. Two protective extension drive components are respectively disposed on the outer wall of the corresponding collar groove plate, and each of the two protective extension drive components includes two U-shaped frames.

[0006] In a preferred embodiment, the leak-proof component further includes: Multiple fixing plates are respectively set on the outer wall of the corresponding collar groove plate, and two sealing telescopic rods are respectively set on the upper side of the multiple fixing plates; A corrugated pipe is fitted onto the outer wall of the bend in the conveying pipe, and both ends of the corrugated pipe are fixedly connected to two collar groove plates respectively. Multiple semi-circular sealing rings are provided at the telescopic ends of two corresponding sealing telescopic rods, and the multiple semi-circular sealing rings are respectively located inside the corresponding collar groove plate; In a preferred embodiment, the leak-proof component further includes: Multiple sliding plates are respectively disposed on one side of the corresponding collar groove plate, and guide rods are fixedly connected inside the multiple sliding plates; Multiple sliding blocks are respectively sleeved on the outer wall of the corresponding guide rod, and the multiple sliding blocks slide inside the corresponding slide plate. The same fixing ring is provided on every two sliding blocks located on the same side.

[0007] In a preferred embodiment, the leak-proof component further includes: Two driven toothed rings are respectively mounted on corresponding fixed ring frames, and an arc-shaped frame is provided on one side of each of the two driven toothed rings; Multiple return springs are respectively sleeved on the outer wall of the corresponding guide rod. One end of each return spring is fixedly connected to the corresponding sliding block, and the other end of each return spring is fixedly connected to the inner wall of the corresponding slide plate.

[0008] In a preferred embodiment, the leak-proof component further includes: Two take-up and take-out shafts are respectively set inside the corresponding arc-shaped frame; Two take-up and take-up wheels are respectively set on the outer wall of the corresponding take-up and take-up shaft.

[0009] In a preferred embodiment, the leak-proof component further includes: Two fixed shaft seats are respectively disposed on one side of the corresponding fixed ring frame, and the outer walls of the two fixed shaft seats are respectively provided with rotating sleeves; Two sealing ropes, one end of each sealing rope is set on the outer wall of the corresponding rotating sleeve, and the other end of each sealing rope is wrapped around the outer wall of the corresponding take-up and release wheel; Two take-up and release motors are respectively mounted on corresponding arc-shaped frames, and the drive ends of the two take-up and release motors are respectively connected to one end of the corresponding take-up and release shafts via couplings.

[0010] In a preferred embodiment, the leak-proof component further includes: Multiple movable wheels are respectively disposed inside the slots corresponding to the two collar groove plates, and the multiple movable wheels are respectively in contact with the outer wall of the conveying pipe; Multiple vision sensors are respectively set on the other side of the corresponding collar groove plate.

[0011] In a preferred embodiment, the protection extension driver component further includes: Multiple rotating shafts are respectively disposed inside the corresponding U-shaped frame, and one end of the U-shaped rotating plate is disposed on the outer wall of each of the multiple rotating shafts; Multiple drive shafts are respectively located inside the other end of the corresponding U-shaped rotating plate.

[0012] In a preferred embodiment, the protection extension driver component further includes: Multiple drive wheels are respectively disposed on the outer wall of a corresponding drive shaft, and the multiple drive wheels are respectively in contact with the outer wall of the conveying pipe; Multiple drive motors are respectively mounted on corresponding U-shaped rotating plates, and the drive ends of the multiple drive motors are respectively connected to one end of the corresponding drive shaft through couplings.

[0013] In a preferred embodiment, the protection extension driver component further includes: Multiple fixing rods are respectively disposed inside the corresponding U-shaped rotating plate, and rotating blocks are respectively disposed on the outer wall of the multiple fixing rods; Multiple L-shaped frames are respectively set on corresponding U-shaped frames. Each of the multiple L-shaped frames has an electric telescopic rod on one side, and the telescopic ends of the multiple electric telescopic rods are respectively fixedly connected to the corresponding rotating blocks.

[0014] In a preferred embodiment, it also includes: Two drive frames are respectively mounted on corresponding fixed ring frames, and each of the two drive frames has a drive shaft inside. Two driving gears are respectively disposed at one end of a corresponding driving shaft, and the two driving gears respectively mesh with the corresponding driven gear ring; Two drive motors are respectively mounted on corresponding drive frames, and the drive ends of the two drive motors are respectively connected to the other end of the corresponding drive shaft through couplings.

[0015] As can be seen from the above, the chemical raw material closed conveying leak prevention safety protection device provided by the present invention utilizes the combined semi-circular sealing ring and corrugated pipe to construct an initial seal, effectively preventing leakage. Through real-time monitoring by visual sensing, the binding mechanism is driven to dynamically tighten and isolate zones. With the help of the movable collar moving along the pipe wall, the corrugated pipe can be quickly expanded to cover the straight pipe leakage point, realizing simultaneous sealing of the bend and the straight pipe, forming a multi-layer three-dimensional protection, which significantly enhances the emergency handling and conveying reliability under complex leakage conditions. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of a closed-loop conveying and leak-proof safety protection device for chemical raw materials proposed in this invention. Figure 2 This is a schematic diagram of the structure of the bend in the conveying pipe of a closed-loop safety protection device for preventing leakage of chemical raw materials proposed in this invention; Figure 3 This is a schematic diagram of the overall structure of the leak-proof component of a closed-loop chemical raw material conveying leak-proof safety protection device proposed in this invention; Figure 4 This is a schematic diagram of the overall structure of one end of the leak-proof component of a closed-loop conveying safety protection device for chemical raw materials proposed in this invention. Figure 5 This is an exploded view of the collar groove plate in the leak-proof component of a leak-proof safety protection device for closed conveying of chemical raw materials proposed in this invention. Figure 6 This is a schematic diagram of the overall structure of the fixing ring frame in the leak-proof component of a closed-loop conveying safety protection device for chemical raw materials proposed in this invention. Figure 7 This is a schematic diagram of the overall structure of the protective extension drive component of a closed-loop safety protection device for preventing leakage of chemical raw materials, as proposed in this invention.

[0017] In the diagram: 1. Support frame; 2. Storage hopper; 3. Leak-proof assembly; 301. Collar groove plate; 302. Vision sensor; 303. Fixing plate; 304. Sealing telescopic rod; 305. Sliding plate; 306. Fixing ring frame; 307. Arc frame; 308. Moving wheel; 309. Sliding block; 310. Take-up and release wheel; 311. Driven gear ring; 312. Guide rod; 313. Return spring; 314. Semi-circular sealing ring; 315. Take-up and release motor; 316. Take-up and release shaft 317. Rotating sleeve; 318. Fixed shaft seat; 319. Sealing rope; 320. Corrugated pipe; 4. Conveying pipe; 5. Protective extension drive assembly; 501. Drive shaft; 502. Drive wheel; 503. Rotating block; 504. L-shaped frame; 505. Electric telescopic rod; 506. U-shaped frame; 507. Rotating shaft; 508. U-shaped rotating plate; 509. Fixed rod; 510. Drive motor; 6. Drive frame; 7. Drive gear; 8. Drive motor; 9. Drive shaft. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0019] The safety protection device for closed-loop transportation of chemical raw materials disclosed in this invention is mainly used in scenarios where the flow direction changes abruptly at bends in liquid chemical pipelines, and the combined effects of erosion and corrosion can easily lead to localized thinning and leakage, endangering safety and environmental protection.

[0020] Reference Figures 1-6 A closed-loop safety protection device for preventing leakage of chemical raw materials, comprising: Support 1, with a storage bin 2 on the upper side of support 1, and a conveying pipe 4 at the discharge end of storage bin 2; Leakage prevention component 3 is disposed on the outer wall of the bend of the conveying pipe 4. Leakage prevention component 3 includes two collar groove plates 301, both of which are sleeved on the outer wall of the conveying pipe 4. Two protective extension drive components 5 are respectively disposed on the outer wall of the corresponding collar groove plate 301, and each of the two protective extension drive components 5 includes two U-shaped frames 506.

[0021] In this invention, the leak-proof component 3 further includes: Multiple fixing plates 303 are respectively disposed on the outer wall of the corresponding collar groove plate 301, and two sealing telescopic rods 304 are respectively disposed on the upper side of the multiple fixing plates 303; The corrugated pipe 320 is sleeved on the outer wall of the bend of the conveying pipe 4, and the two ends of the corrugated pipe 320 are fixedly connected to the two collar groove plates 301 respectively. Multiple semi-circular sealing rings 314 are provided at the telescopic ends of the corresponding two sealing telescopic rods 304, and the multiple semi-circular sealing rings 314 are respectively located inside the corresponding collar groove plate 301. In this invention, the leak-proof component 3 further includes: Multiple sliding plates 305 are respectively disposed on one side of the corresponding collar groove plate 301, and guide rods 312 are fixedly connected inside the multiple sliding plates 305. Multiple sliding blocks 309 are respectively sleeved on the outer wall of the corresponding guide rod 312, and the multiple sliding blocks 309 slide inside the corresponding slide plate 305. The same fixing ring 306 is provided on each pair of sliding blocks 309 located on the same side.

[0022] In this invention, the leak-proof component 3 further includes: Two driven toothed rings 311 are respectively mounted on corresponding fixed ring frames 306, and an arc-shaped frame 307 is provided on one side of each of the two driven toothed rings 311. Multiple return springs 313 are respectively sleeved on the outer wall of the corresponding guide rod 312. One end of each return spring 313 is fixedly connected to the corresponding sliding block 309, and the other end of each return spring 313 is fixedly connected to the inner wall of the corresponding slide plate 305.

[0023] In this invention, the leak-proof component 3 further includes: Two take-up and extendable shafts 316 are respectively installed inside the corresponding arc-shaped frame 307; Two take-up and extender wheels 310 are respectively disposed on the outer wall of the corresponding take-up and extender shaft 316.

[0024] In this invention, the leak-proof component 3 further includes: Two fixed shaft seats 318 are respectively disposed on one side of the corresponding fixed ring frame 306, and the outer walls of the two fixed shaft seats 318 are respectively provided with rotating sleeves 317; Two sealing ropes 319, one end of each sealing rope 319 is respectively set on the outer wall of the corresponding rotating sleeve 317, and the other end of each sealing rope 319 is respectively wrapped around the outer wall of the corresponding take-up and release wheel 310. Two take-up and release motors 315 are respectively mounted on corresponding arc-shaped frames 307, and the drive ends of the two take-up and release motors 315 are respectively connected to one end of the corresponding take-up and release shafts 316 via couplings.

[0025] In this invention, the leak-proof component 3 further includes: Multiple movable wheels 308 are respectively disposed inside the corresponding slots of the two collar groove plates 301, and the multiple movable wheels 308 are respectively in contact with the outer wall of the conveying pipe 4. Multiple vision sensors 302 are respectively disposed on the other side of the corresponding collar groove plate 301.

[0026] Specifically, during normal transport of chemical raw materials, two opposing semi-circular sealing rings 314 located inside the same collar groove plate 301 are tightly pressed against the outer wall of the transport pipe 4 by the corresponding sealing telescopic rod 304. At this time, the two sets of semi-circular sealing rings 314 respectively form two complete sealing ring bodies. Thus, with the action of the two complete sealing ring bodies and the bellows 320, the bend of the transport pipe 4 is sealed and protected. When the bend of the transport pipe 4 corrodes and leaks after long-term use, the leaked chemical raw materials will only enter the sealed environment formed by the two complete sealing ring bodies and the bellows 320, and will not leak to the external environment. When leakage occurs simultaneously at the bend of the delivery pipe 4 and one end of the pipe wall, the corresponding visual sensors 302 located on the two collar groove plates 301 detect it immediately. After feeding this information back to the terminal, the terminal immediately activates the active motor 8, causing the active shaft 9 to drive the active gear 7 to rotate. Since the active gear 7 meshes with the driven gear ring 311, the driven gear ring 311 drives the arc frame 307 to rotate around the outer wall of the bellows 320. During this process, the take-up and release motor 315 is activated, causing the take-up and release shaft 316 to drive the take-up and release wheel 310 to rotate, thereby assisting in the release of the sealing rope 319. The drive of the take-up and release motor 315 ensures that the sealing rope 319 maintains a certain tension during release, improving the sealing performance of the sealing rope 319 in subsequent binding. One end of 9 is fixed to the rotating sleeve 317, which is set on the fixed shaft seat 318. As the take-up and release wheel 310 continues to rotate around the outer wall of the bellows 320, the sealing rope 319 continues to bind the bellows 320, so that the bound position of the bellows 320 is tightly attached to the outer wall of the conveying pipe 4 until the sealing rope 319 is released. At this time, the bellows 320 is divided into two sealed areas by the action of the sealing rope 319. One sealed area provides leakage protection for the bend of the conveying pipe 4, while the other sealed area provides leakage protection for one end of the pipe wall of the conveying pipe 4. When providing leakage protection for one end of the pipe wall of the conveying pipe 4, the two semi-circular sealing rings 314 are separated by opening multiple sealing telescopic rods 304 near the pipe wall. Subsequently, the protective expansion drive component 5 drives the collar groove plate 301 at this position to move towards the leak position on one end of the pipe wall of the conveying pipe 4, thereby stretching and expanding another sealed area of ​​the bellows 320. When the collar groove plate 301 moves to the leak position on one end of the pipe wall of the conveying pipe 4 and the bellows 320 completely covers the position, the multiple sealing telescopic rods 304 on the collar groove plate 301 at this position are opened again, so that the two originally separated semi-circular sealing rings 314 form a complete sealing ring body again. Combined with the binding of the sealing rope 319 and the sealing of the two complete sealing ring bodies, the two sealing areas formed by the bellows 320 provide leak-proof protection for the bend and one end of the pipe wall of the conveying pipe 4 at the same time. Finally, wait for the staff to come for maintenance.

[0027] In specific application scenarios, the active compression of the sealing telescopic rod 304 allows the two opposing semi-circular sealing rings 314 to flexibly "separate" or "close" to form a complete sealing ring body. This dynamic adjustment structure can ensure static fit and sealing during normal transportation, and can temporarily release the seal when leakage occurs, providing an action gap for subsequent active movement and secondary sealing, which significantly improves the adaptability and operability of the sealing mechanism. Utilizing the plasticity and ductility of the bellows 320, it serves as an external wrapping barrier for leaked materials. When the conveying pipe 4 leaks, the bellows 320 can effectively contain the leaked chemical raw materials and prevent them from splashing into the external environment. Meanwhile, its deformable characteristics provide structural support for the subsequent binding deformation of the sealing rope 319, and it can be stretched and expanded when the collar groove plate 301 moves, providing sufficient deformation margin and fault tolerance time for dynamic displacement. During the rotation binding process of the arc frame 307, the take-up and release motor 315 drives the take-up and release wheel 310 to actively release the rope, and with the positioning effect of the rotating sleeve 317 and the fixed shaft seat 318, it ensures that the sealing rope 319 maintains a constant tension throughout the release process. This tension-maintaining structure effectively prevents the sealing rope 319 from loosening or tangling, and significantly improves the clamping force and sealing reliability of the sealing rope 319 after binding. When the collar groove plate 301 moves, it slides relative to the sliding block 309 on the fixed ring frame 306 through the two sliding groove plates 305, and cooperates with the compression and energy storage of the return spring 313. This structure ensures the guiding accuracy and stability of the collar groove plate 301 during long-distance movement, and also enables the independent displacement of the collar groove plate 301 under the premise that the fixed ring frame 306 is locked by the sealing rope 319, so that the expansion of the sealing area and the positioning of the fixed point do not interfere with each other.

[0028] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 7 In a preferred embodiment, the protection extension driver component 5 further includes: Multiple rotating shafts 507 are respectively disposed inside the corresponding U-shaped frame 506, and one end of a U-shaped rotating plate 508 is respectively disposed on the outer wall of the multiple rotating shafts 507. Multiple drive shafts 501 are respectively disposed inside the other end of the corresponding U-shaped rotating plate 508.

[0029] In this invention, the protection extension drive component 5 further includes: Multiple drive wheels 502 are respectively disposed on the outer wall of the corresponding drive shaft 501, and the multiple drive wheels 502 are respectively in contact with the outer wall of the conveying pipe 4; Multiple drive motors 510 are respectively mounted on corresponding U-shaped rotating plates 508, and the drive ends of the multiple drive motors 510 are respectively connected to one end of the corresponding drive shaft 501 through couplings.

[0030] In this invention, the protection extension drive component 5 further includes: Multiple fixing rods 509 are respectively disposed inside the corresponding U-shaped rotating plate 508, and rotating blocks 503 are respectively disposed on the outer walls of the multiple fixing rods 509. Multiple L-shaped frames 504 are respectively set on corresponding U-shaped frames 506. Each of the multiple L-shaped frames 504 has an electric telescopic rod 505 on one side. The telescopic ends of the multiple electric telescopic rods 505 are respectively fixedly connected to the corresponding rotating blocks 503.

[0031] Specifically, by activating the two electric telescopic rods 505, the two U-shaped rotating plates 508 are pushed to rotate around the corresponding rotating shafts 507 until the drive wheels 502 on the two U-shaped rotating plates 508 are in tight contact with the outer wall of the conveying pipe 4. Then, by activating the two drive motors 510, the two drive shafts 501 drive the corresponding drive wheels 502 to rotate. Under this action, the traction force formed by the two drive wheels 502 drives the collar groove plate 301 at this position to move towards the leakage position of one end of the pipe wall of the conveying pipe 4, so that the other sealed area of ​​the corrugated pipe 320 is stretched and expanded, which facilitates the subsequent anti-leakage component 3 to protect the pipe wall of one end of the conveying pipe 4 from leakage.

[0032] In specific application scenarios, when it is necessary to move to the location of the leak in the pipe wall, the electric telescopic rod 505 pushes the U-shaped rotating plate 508 to rotate around the rotating shaft 507, so that the drive wheel 502 presses against the pipe wall. Then, the drive motor 510 drives the drive wheel 502 to rotate through the drive shaft 501 to generate active traction force. This combined structure realizes the "on-demand activation" and "active pressing drive" of the moving mechanism, which not only avoids wear caused by continuous contact, but also provides strong and controllable moving power in emergency situations, ensuring that the sealed area of ​​the bellows 320 can accurately and quickly cover the far-end leak point.

[0033] Reference Figure 4 and Figure 6 In a preferred embodiment, it also includes: Two drive frames 6 are respectively mounted on corresponding fixed ring frames 306, and each of the two drive frames 6 has a drive shaft 9 inside it. Two drive gears 7 are respectively disposed at one end of the corresponding drive shaft 9, and the two drive gears 7 respectively mesh with the corresponding driven gear ring 311; Two drive motors 8 are respectively mounted on corresponding drive frames 6, and the drive ends of the two drive motors 8 are respectively connected to the other end of the corresponding drive shaft 9 through couplings.

[0034] Working principle: During use, the chemical raw materials inside the storage bin 2 are transported to other working environments through the conveying pipe 4. When the chemical raw materials are being transported normally, the two opposing semi-circular sealing rings 314 located inside the same collar groove plate 301 are tightly pressed against the outer wall of the conveying pipe 4 by the corresponding sealing telescopic rod 304. At this time, the two sets of semi-circular sealing rings 314 respectively form two complete sealing ring bodies. Thus, with the action of the two complete sealing ring bodies and the bellows 320, the bend of the conveying pipe 4 is sealed and protected. When corrosion and leakage occur at the 4-bend of the delivery pipe after long-term use, the leaked chemical raw materials will only enter the sealed environment formed by the two complete sealing rings and the bellows 320, and will not leak to the external environment. Moreover, the plasticity of the bellows 320 can provide more time for error correction so that subsequent staff can come to inspect and repair. When leakage occurs simultaneously at the bend of the conveying pipe 4 and one end of the pipe wall, the corresponding visual sensors 302 located on the two collar groove plates 301 detect it immediately. After feeding back the situation to the terminal, the terminal immediately starts the active motor 8 to make the active shaft 9 drive the active gear 7 to rotate. Since the active gear 7 meshes with the driven gear ring 311, the driven gear ring 311 drives the arc frame 307 to rotate around the outer wall of the bellows 320. During this process, the take-up and release motor 315 is activated, causing the take-up and release shaft 316 to rotate the take-up and release wheel 310, thereby assisting in the release of the sealing rope 319. The drive of the take-up and release motor 315 ensures that the sealing rope 319 maintains a certain tension during release, improving the sealing performance of subsequent binding. Since one end of the sealing rope 319 is fixed to the rotating sleeve 317, which is mounted on the fixed shaft seat 318, as the take-up and release wheel 310 continues to rotate around the outer wall of the bellows 320, the sealing rope 319 continuously binds the bellows 320, ensuring the sealing performance of the bellows. The corrugated pipe 320 is tightly bound to the outer wall of the conveying pipe 4 until the sealing rope 319 is released. At this point, the sealing rope 319 divides the corrugated pipe 320 into two sealed areas. One sealed area provides leak-proof protection for the bend of the conveying pipe 4, while the other sealed area provides leak-proof protection for one end of the pipe wall. To provide leak-proof protection for one end of the pipe wall, multiple sealing telescopic rods 304 located near that pipe wall are activated, causing the two semi-circular sealing rings 314 to separate. Subsequently, the two electric telescopic rods are activated. 505 pushes two U-shaped rotating plates 508 to rotate around the corresponding rotating shaft 507 until the drive wheels 502 on the two U-shaped rotating plates 508 are in tight contact with the outer wall of the conveying pipe 4. Then, by turning on the two drive motors 510, the two drive shafts 501 drive the corresponding drive wheels 502 to rotate. Under this action, the traction force formed by the two drive wheels 502 drives the collar groove plate 301 at this position to move towards the leakage position of one end of the pipe wall of the conveying pipe 4, thereby stretching and expanding another sealed area of ​​the bellows 320. Among them, multiple moving parts set inside the collar groove plate 301... The moving wheel 308 greatly reduces the friction of the collar groove plate 301 during movement and increases the speed at which the collar groove plate 301 moves to the leakage position of one end of the pipe wall of the conveying pipe 4. Since the fixed ring frame 306 slides on the two sliding plates 305 through the two sliding blocks 309, when the collar groove plate 301 moves, the two sliding plates 305 fixedly connected to the collar groove plate 301, the fixed ring frame 306, and the two sliding blocks 309 undergo relative displacement. At this time, the two return springs 313 are compressed, while the fixed ring frame 306 remains stationary under the binding action of the sealing rope 319. When the collar groove plate 301 moves to the location where the pipe wall at one end of the conveying pipe 4 leaks and the corrugated pipe 320 completely covers the location, the multiple sealing telescopic rods 304 on the collar groove plate 301 at that location are opened again, so that the two originally separated semi-circular sealing rings 314 can re-form a complete sealing ring body. Combined with the binding of the sealing rope 319 and the sealing of the two complete sealing ring bodies, the two sealing areas formed by the corrugated pipe 320 can simultaneously provide leak-proof protection for the bend and one end of the pipe wall of the conveying pipe 4. Finally, wait for the staff to come for maintenance.

[0035] 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 closed-loop safety protection device for preventing leakage during the conveying of chemical raw materials, characterized in that, include: A support (1) is provided on the upper side of the support (1), and a storage bin (2) is provided on the discharge end of the storage bin (2) with a conveying pipe (4) at one end; Leakage prevention component (3) is provided on the outer wall of the bend of the conveying pipe (4). The leakage prevention component (3) includes two collar groove plates (301), both of which are sleeved on the outer wall of the conveying pipe (4). Two protective extension drive components (5) are respectively disposed on the outer wall of the corresponding collar groove plate (301), and each of the two protective extension drive components (5) includes two U-shaped frames (506).

2. The chemical raw material closed conveying leak-proof safety protection device according to claim 1, characterized in that, The leak prevention component (3) also includes: Multiple fixing plates (303) are respectively disposed on the outer wall of the corresponding collar groove plate (301), and two sealing telescopic rods (304) are respectively disposed on the upper side of the multiple fixing plates (303). A corrugated pipe (320) is fitted onto the outer wall of the bend of the conveying pipe (4), and the two ends of the corrugated pipe (320) are fixedly connected to two collar groove plates (301) respectively. Multiple semi-circular sealing rings (314) are provided at the telescopic ends of the corresponding two sealing telescopic rods (304), and the multiple semi-circular sealing rings (314) are respectively located inside the corresponding collar groove plate (301).

3. The chemical raw material closed conveying and leak-proof safety protection device according to claim 2, characterized in that, The leak prevention component (3) also includes: Multiple sliding plates (305) are respectively disposed on one side of the corresponding collar groove plate (301), and guide rods (312) are fixedly connected inside the multiple sliding plates (305). Multiple sliding blocks (309) are respectively sleeved on the outer wall of the corresponding guide rod (312). The multiple sliding blocks (309) slide inside the corresponding slide plate (305). The same fixing ring frame (306) is provided on each pair of sliding blocks (309) located on the same side.

4. The chemical raw material closed conveying and leak-proof safety protection device according to claim 3, characterized in that, The leak prevention component (3) also includes: Two driven toothed rings (311) are respectively disposed on corresponding fixed ring frames (306), and an arc-shaped frame (307) is respectively disposed on one side of the two driven toothed rings (311). Multiple reset springs (313) are respectively sleeved on the outer wall of the corresponding guide rod (312). One end of each reset spring (313) is fixedly connected to the corresponding sliding block (309), and the other end of each reset spring (313) is fixedly connected to the inner wall of the corresponding slide plate (305).

5. A closed-loop safety protection device for preventing leakage during the conveying of chemical raw materials according to claim 4, characterized in that, The leak prevention component (3) also includes: Two take-up and take-down shafts (316) are respectively set inside the corresponding arc-shaped frame (307); Two take-up and release wheels (310) are respectively disposed on the outer wall of the corresponding take-up and release shaft (316).

6. A closed-loop safety protection device for preventing leakage during the conveying of chemical raw materials according to claim 5, characterized in that, The leak prevention component (3) also includes: Two fixed shaft seats (318) are respectively disposed on one side of the corresponding fixed ring frame (306), and the outer walls of the two fixed shaft seats (318) are respectively provided with rotating sleeves (317). Two sealing ropes (319) are provided, one end of each sealing rope (319) is respectively disposed on the outer wall of the corresponding rotating sleeve (317), and the other end of each sealing rope (319) is respectively wrapped around the outer wall of the corresponding take-up and release wheel (310); Two receivers (315) are respectively mounted on corresponding arc-shaped frames (307), and the drive ends of the two receivers (315) are respectively connected to one end of the corresponding receiver shaft (316) via couplings.

7. A closed-loop safety protection device for preventing leakage during the conveying of chemical raw materials according to claim 1, characterized in that, The leak prevention component (3) also includes: Multiple movable wheels (308) are respectively disposed inside the slots opened in the two collar groove plates (301), and the multiple movable wheels (308) respectively contact the outer wall of the conveying pipe (4); Multiple vision sensors (302) are respectively disposed on the other side of the corresponding collar groove plate (301).

8. A closed-loop safety protection device for preventing leakage during the conveying of chemical raw materials according to claim 1, characterized in that, The protection extension drive component (5) includes: Multiple rotating shafts (507) are respectively disposed inside the corresponding U-shaped frame (506), and one end of the U-shaped rotating plate (508) is respectively disposed on the outer wall of the multiple rotating shafts (507); Multiple drive shafts (501) are respectively disposed inside the other end of the corresponding U-shaped rotating plate (508).

9. A closed-loop safety protection device for preventing leakage during the conveying of chemical raw materials according to claim 8, characterized in that, The protection extension drive component (5) also includes: Multiple drive wheels (502) are respectively disposed on the outer wall of the corresponding drive shaft (501), and the multiple drive wheels (502) are respectively in contact with the outer wall of the conveying pipe (4); Multiple drive motors (510) are respectively mounted on corresponding U-shaped rotating plates (508), and the drive ends of the multiple drive motors (510) are respectively connected to one end of the corresponding drive shaft (501) through couplings.

10. A closed-loop safety protection device for preventing leakage during the conveying of chemical raw materials according to claim 9, characterized in that, The protection extension drive component (5) also includes: Multiple fixing rods (509) are respectively disposed inside the corresponding U-shaped rotating plate (508), and rotating blocks (503) are respectively disposed on the outer walls of the multiple fixing rods (509). Multiple L-shaped frames (504) are respectively set on corresponding U-shaped frames (506). Each of the multiple L-shaped frames (504) has an electric telescopic rod (505) on one side. The telescopic ends of the multiple electric telescopic rods (505) are respectively fixedly connected to the corresponding rotating blocks (503).

11. A closed-loop safety protection device for preventing leakage during the conveying of chemical raw materials according to claim 4, characterized in that, Also includes: Two drive frames (6) are respectively set on corresponding fixed ring frames (306), and the interior of the two drive frames (6) is respectively provided with drive shafts (9). Two drive gears (7) are respectively disposed at one end of the corresponding drive shaft (9), and the two drive gears (7) mesh with the corresponding driven gear ring (311); Two active motors (8) are respectively mounted on the corresponding drive frame (6), and the drive ends of the two active motors (8) are respectively connected to the other end of the corresponding drive shaft (9) through couplings.

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