Safety explosion-proof device for chemical production

Abstract

The utility model relates to the technical field of chemical production equipment discloses a safety explosion -proof device for chemical production, including chemical tank, feed pipe, explosion -proof pipe and locking mechanism, locking mechanism includes the cylinder set up in the protection frame, connecting rod, push board, turning plate and limit component, limit component includes baffle and limit block, cylinder drive connecting rod, push board, turning plate drive baffle and close feed pipe, limit block is used for locking baffle under pressure when explosion. The device further includes a quick release mechanism, the quick release mechanism includes a snap ring hinged by two half rings, and a handle, a rotating rod and a limiting rod for locking the snap ring, the limiting rod is fixedly connected to the handle. The utility model solves the problem that the raw material cannot be automatically cut off during explosion, leading to a chain reaction, realizes automatic isolation, the quick release mechanism facilitates the quick replacement of the explosion -proof pipe, and improves the maintenance efficiency.

Description

Technical Field

[0001] This utility model relates to the field of chemical production equipment technology, and in particular to a safety explosion-proof device for chemical production. Background Technology

[0002] In the chemical production process, chemical tanks are the core reaction equipment. In order to cope with the potential risks of overpressure or explosion during production, existing chemical tanks are usually equipped with pressure relief devices such as explosion-proof pipes or rupture discs. When an explosion occurs, the explosion-proof pipe will rupture to release pressure and prevent catastrophic damage to the tank.

[0003] However, existing pressure relief devices are passive explosion-proof. The pressure relief action cannot stop the feed pipe from continuing to deliver raw materials into the chemical tank. The continuously entering raw materials participate in the reaction under high temperature and pressure, triggering a chain reaction or secondary explosion, which greatly increases the severity and losses of the accident.

[0004] Therefore, this utility model proposes a safety explosion-proof device for chemical production to overcome the shortcomings of the prior art. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides a safety explosion-proof device for chemical production, which aims to improve the safety hazards of some existing safety explosion-proof devices for chemical production that cannot automatically cut off the raw material supply when an explosion occurs, resulting in chain reactions or secondary explosions.

[0006] This utility model provides a safety explosion-proof device for chemical production, including: a chemical tank, a feed pipe connected to the chemical tank, and an explosion-proof pipe connected to the chemical tank.

[0007] It also includes a locking mechanism.

[0008] The locking mechanism includes a protective frame, a cylinder, a connecting rod, a push plate, a rotating plate, and a limiting component, wherein the limiting component includes a limiting block and a baffle.

[0009] Furthermore, the cylinder is disposed within the protective frame, the connecting rod is rotatably connected to the output end of the cylinder, the push plate is fixedly connected to the connecting rod, the rotating plate is rotatably disposed within the protective frame, the push plate is used to push the rotating plate to rotate, the baffle is rotatably connected to the bottom of the rotating plate, and the limiting block is fixedly disposed within the protective frame, the limiting block is used to limit the baffle after the baffle rotates to close the feed pipe.

[0010] Preferably, the baffle is rotatably connected to both sides of the bottom of the rotating plate, and the limiting block is used to restrict the rotation of the baffle when the baffle is squeezed by internal pressure, so as to prevent the baffle from being pushed open by high pressure.

[0011] Preferably, it also includes a quick-release mechanism for detachably fixing the explosion-proof pipe to the chemical tank. The quick-release mechanism includes a retaining ring that surrounds the connection between the chemical tank and the explosion-proof pipe.

[0012] Preferably, the quick-release mechanism further includes a rotating shaft, and the retaining ring is composed of two semi-annular parts, which are hinged together by the rotating shaft to realize the opening and closing action of the retaining ring.

[0013] Preferably, the quick-release mechanism further includes a handle and a rotating rod, one end of the handle is rotatably connected to the rotating rod, and the rotating rod is rotatably connected to one end of the retaining ring, for pulling or releasing the retaining ring by operating the handle.

[0014] Preferably, the quick-release mechanism further includes a limiting rod, which is fixedly connected to the handle. The limiting rod is used to restrict the movement path of the lever when the handle is rotated, so as to ensure the accuracy of the lever locking action.

[0015] Preferably, the push plate drives the limiters on both sides of the rotating plate to rotate, and the rotation of the rotating plate drives the baffle to rotate, thus clarifying the contact drive method between the push plate and the rotating plate.

[0016] Preferably, the other end of the handle extends outward from the quick-release mechanism for external operation, making it convenient for the operator to grip and apply force.

[0017] This utility model has the following beneficial effects: 1. This utility model, by setting a locking mechanism, uses a cylinder to drive the connecting rod, push plate, rotating plate and baffle to work together, and relies on the limiting block to achieve self-locking under explosion pressure. This solves the problem in the prior art that the raw material supply cannot be automatically cut off when an explosion occurs, which leads to a chain reaction. It achieves the technical effect of rapid automatic isolation, preventing the accident from expanding and improving production safety.

[0018] 2. This utility model, by setting up a quick-release mechanism, utilizes the coordinated cooperation of the handle, rotating rod, limiting rod and hinged retaining ring to solve the problems of cumbersome and time-consuming replacement of explosion-proof pipes after damage in the prior art, which affects emergency repair and production resumption. It achieves the technical effects of quick disassembly and fixation of explosion-proof pipes, improving maintenance efficiency and enhancing practicality. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of a safety explosion-proof device for chemical production proposed in this utility model; Figure 2 This is a schematic diagram of the base structure of a safety explosion-proof device for chemical production proposed in this utility model; Figure 3This is a schematic diagram of the fixing mechanism of a safety explosion-proof device for chemical production proposed in this utility model; Figure 4 This is a schematic diagram of the quick-release mechanism of a safety explosion-proof device for chemical production proposed in this utility model; Legend: 1. Chemical tank; 2. Feed pipe; 3. Explosion-proof pipe; 4. Locking mechanism; 41. Protective frame; 42. Cylinder; 43. Connecting rod; 44. Push plate; 45. Rotating plate; 46. ​​Restriction component; 461. Restriction block; 462. Baffle; 5. Quick release mechanism; 51. Handle; 52. Limiting rod; 53. Rotating rod; 54. Snap ring; 55. Rotating shaft. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example

[0021] Reference Figures 1 to 4 This utility model provides a safety explosion-proof device for chemical production, which aims to solve the problem in the prior art that the raw materials in the feed pipe 2 cannot be quickly and automatically cut off when an explosion occurs, leading to a chain reaction or an expansion of accident losses.

[0022] like Figure 1 As shown, the system includes a chemical tank 1, a feed pipe 2, and an explosion-proof pipe 3 connected to the chemical tank 1. The chemical tank 1 serves as the main material reaction vessel for the entire unit, the feed pipe 2 is used to transport chemical materials into the chemical tank 1, and the explosion-proof pipe 3 is used to relieve pressure through a rupture plate and cool the residual flame when the internal pressure is too high.

[0023] Reference Figure 1 and Figure 3 The locking mechanism 4 includes a protective frame 41, a cylinder 42, a connecting rod 43, a push plate 44, a rotating plate 45, and a limiting component 46. The protective frame 41 is located outside the feed pipe 2 and is used to protect the internal drive and transmission components. The cylinder 42 is located inside the protective frame 41 and serves as a drive source. The connecting rod 43 is rotatably connected to the output end of the cylinder 42. The push plate 44 is fixedly connected to the connecting rod 43. The rotating plate 45 is rotatably located inside the protective frame 41 and is used by the push plate 44 to push the rotating plate 45 to rotate.

[0024] The limiting component 46 has a limiting block 461 and a baffle 462. The baffle 462 is rotatably connected to the bottom of the rotating plate 45 and is used to rotate and close the feed pipe 2 under the drive of the rotating plate 45. The limiting block 461 is fixedly installed inside the protective frame 41 to ensure that when an abnormality is detected, the baffle 462 can quickly close the feed pipe 2 and be reliably locked to prevent reverse opening.

[0025] Reference Figure 3 The baffle 462 is rotatably connected to both sides of the bottom of the rotating plate 45. The limiting block 461 is used to limit the rotation of the baffle 462 when it is squeezed by the internal pressure of the chemical tank 1, so as to prevent the baffle 462 from being pushed open in the opposite direction.

[0026] Reference Figure 1 , Figure 3 and Figure 4 It also includes a quick-release mechanism 5, which is used to detachably fix the explosion-proof pipe 3 to the chemical tank 1. The quick-release mechanism 5 includes a retaining ring 54, which surrounds the connection between the chemical tank 1 and the explosion-proof pipe 3.

[0027] Reference Figure 4 The quick-release mechanism 5 also includes a rotating shaft 55. The retaining ring 54 is composed of two semi-circular parts, which are hinged together by the rotating shaft 55 so that it can open and close around the rotating shaft 55. The quick-release mechanism 5 also includes a handle 51 and a rotating rod 53. One end of the handle 51 is rotatably connected to the rotating rod 53, and the rotating rod 53 is rotatably connected to one end of the retaining ring 54. By operating the handle 51, the rotating rod 53 is driven to move, thereby tightening or loosening the retaining ring 54. The quick-release mechanism 5 also includes a limiting rod 52, which is fixedly connected to the handle 51. The limiting rod 52 is used to limit the movement path of the rotating rod 53 when the handle 51 is rotated, so as to ensure the smoothness and accuracy of the locking action.

[0028] Reference Figure 3 The movement of the push plate 44 causes the limiters on both sides of the rotating plate 45 to rotate. Here, the limiters are contact structures that push the push plate 44 to push the rotating plate 45 to rotate. The rotation of the rotating plate 45 causes the baffle 462 to rotate.

[0029] Reference Figure 4 The other end of the handle 51 extends out of the quick-release mechanism 5 and is designed as an easy-to-grip structure for external operation.

[0030] The implementation principle of this application embodiment is as follows: When an abnormal pressure is detected inside the chemical tank 1, indicating an impending explosion, the cylinder 42 of the locking mechanism 4 is activated. The cylinder 42 drives the connecting rod 43 to move. Since the push plate 44 is fixedly connected to the connecting rod 43, the connecting rod 43 drives the push plate 44 to move. The push plate 44 pushes the rotating plate 45 to rotate. The movement of the push plate 44 causes the limiters on both sides of the rotating plate 45 to rotate. Since the baffle 462 is rotatably connected to the bottom of the rotating plate 45, the rotation of the rotating plate 45 causes the baffle 462 to rotate, quickly closing the channel of the feed pipe 2. When an internal explosion occurs, the high-pressure gas squeezes the baffle 462 due to the pressure. At this time, the fixedly set limit block 461 restricts the rotation of the baffle 462, preventing the baffle 462 from being pushed open in the opposite direction, thus completing the locking and isolating the entry of raw materials. Through this synergistic effect of the locking mechanism 4, this utility model solves the problem in the prior art that the raw materials cannot be automatically cut off during an explosion, leading to a chain reaction.

[0031] When the rupture plate in the explosion-proof tube 3 cracks after an explosion, and the explosion-proof tube 3 needs to be replaced, the quick-release mechanism 5 is operated. The operator rotates the handle 51. Since the limiting rod 52 is fixedly connected to the handle 51, the limiting rod 52 is used to limit the movement path of the rotating rod 53 when the handle 51 is rotated. The handle 51 pulls the rotating rod 53, which is rotatably connected to one end of the retaining ring 54, through the rotating rod 53. Since the retaining ring 54 is composed of two semi-circular parts and is hinged by the rotating shaft 55, the pulling of the rotating rod 53 causes the retaining ring 54 to open around the rotating shaft 55, thereby realizing the quick release of the explosion-proof tube 3.

Claims

1. A safety explosion-proof device for chemical production, comprising: Chemical tank (1), feed pipe (2) connected to the chemical tank (1), and explosion-proof pipe (3) connected to the chemical tank (1); Its features are, It also includes a locking mechanism (4), which includes a protective frame (41), a cylinder (42), a connecting rod (43), a push plate (44), a rotating plate (45), and a limiting component (46) disposed outside the feed pipe (2). The cylinder (42) is disposed inside the protective frame (41), the connecting rod (43) is rotatably connected to the output end of the cylinder (42), the push plate (44) is fixedly connected to the connecting rod (43), the rotating plate (45) is rotatably disposed inside the protective frame (41), the push plate (44) is used to push the rotating plate (45) to rotate, the limiting component (46) includes a limiting block (461) and a baffle (462), the baffle (462) is rotatably connected to the bottom of the rotating plate (45), the limiting block (461) is fixedly disposed inside the protective frame (41), the limiting block (461) is used to limit the baffle (462) after the baffle (462) rotates to close the feed pipe (2).

2. The explosion-proof safety device for chemical production according to claim 1, characterized in that, The baffle (462) is rotatably connected to the bottom sides of the rotating plate (45), and the limiting block (461) is used to limit the rotation of the baffle (462) when the baffle (462) is squeezed by internal pressure.

3. The explosion-proof safety device for chemical production according to claim 1, characterized in that, It also includes a quick-release mechanism (5), which is used to detachably fix the explosion-proof pipe (3) to the chemical tank (1). The quick-release mechanism (5) includes a retaining ring (54), which surrounds the connection between the chemical tank (1) and the explosion-proof pipe (3).

4. The explosion-proof safety device for chemical production according to claim 3, characterized in that, The quick-release mechanism (5) also includes a rotating shaft (55), and the retaining ring (54) is composed of two semi-annular parts, which are hinged together by the rotating shaft (55).

5. The explosion-proof safety device for chemical production according to claim 3, characterized in that, The quick-release mechanism (5) also includes a handle (51) and a rotating rod (53). One end of the handle (51) is rotatably connected to the rotating rod (53), and the rotating rod (53) is rotatably connected to one end of the retaining ring (54).

6. The explosion-proof safety device for chemical production according to claim 5, characterized in that, The quick-release mechanism (5) also includes a limiting rod (52), which is fixedly connected to the handle (51). The limiting rod (52) is used to limit the movement path of the rotating rod (53) when the handle (51) is rotated.

7. The explosion-proof safety device for chemical production according to claim 1, characterized in that, The movement of the push plate (44) causes the limiters on both sides of the rotating plate (45) to rotate, and the rotation of the rotating plate (45) causes the baffle (462) to rotate.

8. A safety explosion-proof device for chemical production according to claim 5, characterized in that, The other end of the handle (51) extends outward from the quick-release mechanism (5) for external operation.

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