A chemical pipeline safety docking protection component

Abstract

This utility model discloses a safety connection and protection component for chemical pipelines, including a connecting pipe. The inner ring of the connecting pipe is fixedly sleeved to the surface of an internal connecting cylinder. The two ends of the internal connecting cylinder are respectively inserted into the interiors of two chemical pipes. This safety connection and protection component for chemical pipelines works by inserting the two ends of the internal connecting cylinder into the interiors of the two chemical pipes to be connected, and then using upper and lower arc-shaped semi-fastening pipes to fasten the locking rings fixed to the surface of the chemical pipes. The threaded expansion and contraction displacement of the internally threaded rotating cylinder and the internally inserted locking rod pulls the first and second pairs of arc-shaped pulling pipes towards the interior of the central sleeve fitting. This means that the chemical pipes on both sides are tightly pushed towards the center of the connecting pipe, thereby utilizing the difference in inclined displacement between the sealing sleeve and the internal connecting cylinder to improve the sealing performance of the chemical pipe connection and enhance the safety of gas transportation in the chemical pipeline.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical pipeline safety protection, in particular to a chemical pipeline safety docking protection component. Background Art

[0002] In chemical production, many chemical raw materials will produce toxic gases during preparation. For example, ore contains sulfur, and sulfur-containing gas will be produced during the extraction process. Usually, sulfur-containing gas is toxic, so the gas produced is often transported and transferred through pipelines. Since pipelines need to be connected through multiple sections to form a complete transportation channel, and the existing pipelines are connected through docking buckles, the sealing effect of the connection between the pipeline and the docking buckle is not ideal. In actual use, a small amount of gas leakage is likely to occur at the connection part, and the toxic gas will accumulate around the connection part, which is easy to cause environmental pollution and affect the health of the staff. Summary of the invention

[0003] In view of the deficiencies in the prior art, the utility model provides a chemical pipeline safety docking protection component, which solves the problem that the prior pipeline docking is directly docked through docking buckles, and the sealing effect at the connection edge of the pipeline and the docking buckle is not ideal. In actual use, a small amount of gas leakage is likely to occur at the connection part, and toxic gas will accumulate around the connection part, which is likely to cause environmental pollution and affect the health of the workers.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a chemical pipeline safety docking protection component, comprising a docking tube, the inner ring of the docking tube is fixedly sleeved with the surface of a built-in connecting tube, the two ends of the built-in connecting tube are respectively inserted into the interior of two chemical pipes, the surface of the built-in connecting tube is fixedly sleeved with a sealing contact pad, the side of the sealing contact pad is fixedly connected to the side of the docking tube, the edge of the chemical pipe is extruded in contact with the side edge of the sealing contact pad, the surface of the built-in connecting tube is sleeved with two sealing docking sleeves, the outer surface of the sealing docking sleeve is extruded in contact with the inner wall of the chemical pipe, the front of the docking tube is fixedly connected with a clamping block, the middle of the clamping block is fixedly sleeved with a central sleeve piece, the two ends of the central sleeve piece are respectively slidably inserted with a first pair of arc-drawing tubes and a second pair of arc-drawing tubes, the ends of the first pair of arc-drawing tubes and the second pair of arc-drawing tubes away from the central sleeve piece are fixedly connected with end plates, the tops of the first pair of arc-drawing tubes and the second pair of arc-drawing tubes are both hinged with upper arc-shaped half-buckle tubes, the first pair of arc-drawing tubes and The bottom of the second pair of arc-drawing tubes are hinged with a lower arc-shaped half-buckle tube, an inner plug-in rod is inserted into the right side of the second pair of arc-drawing tubes, the left end of the inner plug-in rod is inserted into the interior of the first pair of arc-drawing tubes, and is fixedly sleeved with the inner wall of the first pair of arc-drawing tubes, the inner ring of the right end plate is sleeved on the surface of the inner plug-in rod, the right side surface of the inner plug-in rod is provided with a thread groove, the right end of the inner plug-in rod is inserted into a fastening internal thread rotating cylinder, the inner wall of the fastening internal thread rotating cylinder is threadedly sleeved with the surface of the right side of the inner plug-in rod, and the fastening internal thread rotating cylinder The left edge is fixedly connected with a stabilizing pressure sleeve, the inner ring of the stabilizing pressure sleeve is sleeved on the surface of the inner plug-in rod, the back of the upper arc-shaped half-buckle tube is fixedly connected with a sleeve pressure cylinder, the inner ring of the sleeve pressure cylinder is sleeved with a bolt rod, the lower surface of the bolt rod is sleeved with a sleeve, the side of the sleeve is fixedly connected to the back of the lower arc-shaped half-buckle tube, the surface of the bolt rod is threaded with two nuts, the surface of the chemical pipe is fixedly sleeved with a convex ring, and the inner walls of the upper arc-shaped half-buckle tube and the lower arc-shaped half-buckle tube are both sleeved on the surface of the convex ring.

[0005] Preferably, the inner wall of the chemical pipe is fixedly sleeved with a limiting built-in clamping ring, and the side surface of the limiting built-in clamping ring is in extrusion contact with the side edge of the sealing docking sleeve.

[0006] Preferably, a resistance extrusion sleeve is fixedly sleeved on the surface of the fastening internal thread rotating cylinder, an L-shaped frame plate is fixedly connected to the front side of the right end plate, and a fastening threaded rotating rod penetrates the surface of the horizontal plate of the L-shaped frame plate.

[0007] Preferably, the surface of the fastening threaded turning rod is threadedly connected to the inner wall of the horizontal plate of the L-shaped frame plate, and the back side of the fastening threaded turning rod is rotatably connected to an arc-shaped pressure resistance plate, and the arc-shaped inner wall of the arc-shaped pressure resistance plate is in extrusion contact with the annular outer surface of the resistance extrusion sleeve.

[0008] Preferably, the front and back surfaces of the first pair of arc-drawing tubes and the second pair of arc-drawing tubes are fixedly connected with synchronous limiting slide bars, and the surfaces of the synchronous limiting slide bars are slidably connected to the inner wall of the middle sleeve member.

[0009] Preferably, the end of the inner plug-in rod located inside the first pair of arc-drawing tubes is fixedly connected with a stable T-shaped inner clamping block, and the surface of the stable T-shaped inner clamping block is fixedly connected to the inner wall of the first pair of arc-drawing tubes.

[0010] Preferably, one end of the first pair of arc-drawing tubes located inside the middle sleeve is fixedly connected to a limit protection washer, and the inner wall of the limit protection washer is slidably sleeved with the surface of the inner plug-in rod.

[0011] The utility model provides a chemical pipeline safety docking protection component, which has the following beneficial effects:

[0012] (1) The chemical pipeline safety docking protection component, through the setting of the docking pipe, and the coordinated use of the built-in connecting tube, the sealing contact pad, the clamping block, the middle sleeve, the first pair of arc tubes, the second pair of arc tubes, the end plate, the upper arc-shaped half-buckle tube, the lower arc-shaped half-buckle tube, the internal insertion rod, the fastening internal thread rotating tube, the convex ring, the sealing docking sleeve, the limiting built-in clamping ring, the sleeve pressure tube, the bolt rod, the clamping tube and the nut, plays a role in that the two ends of the built-in connecting tube are respectively inserted into the inside of the two chemical pipes to be docked, and the upper arc-shaped half-buckle tube and the lower arc-shaped half-buckle tube are buckled to the convex ring fixed on the surface of the chemical pipe, and then the inner thread is fastened. The threaded telescopic displacement of the threaded rotating cylinder and the internally inserted clamping rod pulls the first pair of arc-drawn tubes and the second pair of arc-drawn tubes to be tensioned and displaced inwardly of the central casing, that is, the chemical pipes on both sides are pulled and extruded and displaced toward the middle through the upper arc-shaped half-buckle tubes and the lower arc-shaped half-buckle tubes on both sides, so that the chemical pipes on both sides are tightly pressed toward the middle of the butt-jointed tube, thereby utilizing the inclined displacement difference between the sealing butt joint sleeve and the built-in connecting cylinder to make the outer side of the built-in connecting cylinder and the inner wall of the sealing butt joint sleeve more stably squeezed, and cooperating with the sealing contact pad and the side squeeze of the chemical pipe, thereby making the butt sealing of the chemical pipe higher, thereby achieving the effect of improving the safety of gas transportation in its chemical pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a front view of the structure of the utility model;

[0014] Figure 2 It is a schematic diagram of the back side of the structure of the utility model;

[0015] Figure 3 This is a schematic diagram of the internal structure of the utility model;

[0016] Figure 4 The utility model structure Figure 1 A magnified schematic diagram of point A;

[0017] Figure 5 The utility model structure Figure 2 An enlarged schematic diagram of point B;

[0018] Figure 6 The utility model structure Figure 4 An enlarged schematic diagram of point C;

[0019] Figure 7 The utility model structure Figure 4 A partial cross-sectional view at point C of FIG.

[0020] Figure 8 The utility model structure Figure 6 An enlarged schematic diagram of point D;

[0021] Fig. 9 The utility model structure Figure 7 Enlarged schematic diagram of point E.

[0022] In the figure: 1. butt joint; 2. built-in connecting tube; 3. chemical pipe; 4. sealing contact pad; 5. clamping block; 6. middle casing piece; 7. first pair of arc-drawing tubes; 8. second pair of arc-drawing tubes; 9. end plate; 10. synchronous limit slide; 11. upper arc-shaped half-buckle tube; 12. lower arc-shaped half-buckle tube; 13. internal insertion clamp rod; 14. stable T-shaped internal clamp block; 15. fastening internal thread rotating cylinder; 16. stable pressure casing; 17. resistance extrusion casing; 18. L-shaped frame plate; 19. fastening threaded rotating rod; 20. arc-shaped pressure resistance plate; 21. clamping convex ring; 22. sealing butt joint sleeve; 23. limit built-in clamp ring; 24. sleeve pressure cylinder; 25. bolt rod; 26. clamp cylinder; 27. nut. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] like Figure 1-9As shown, the utility model provides a technical solution: a chemical pipeline safety docking protection component, including a docking tube 1, the inner ring of the docking tube 1 is fixedly sleeved with the surface of a built-in connecting tube 2, the two ends of the built-in connecting tube 2 are respectively inserted into the interior of two chemical pipes 3, the surface of the built-in connecting tube 2 is fixedly sleeved with a sealing contact pad 4, the side of the sealing contact pad 4 is fixedly connected to the side of the docking tube 1, the edge of the chemical pipe 3 is extruded and contacted with the side edge of the sealing contact pad 4, the surface of the built-in connecting tube 2 is sleeved with two sealing docking sleeves 22, the outer surface of the sealing docking sleeve 22 is extruded and contacted with the inner wall of the chemical pipe 3, the inner wall of the chemical pipe 3 is fixedly sleeved with a limited built-in clamping ring 23, the side of the limited built-in clamping ring 23 is connected to the side of the sealing docking sleeve 22 The edges are squeezed and contacted, and the setting of the built-in limiting clamp ring 23 is used to support the sealing docking sleeve 22 placed inside the chemical pipe 3, so as to ensure that the sealing docking sleeve 22 can be squeezed more stably with the built-in connecting tube 2 when the chemical pipe 3 moves toward the middle. The front of the docking pipe 1 is fixedly connected with a clamping block 5, and the middle of the clamping block 5 is fixedly sleeved with a central sleeve member 6. The first pair of arc-drawing tubes 7 and the second pair of arc-drawing tubes 8 are slidably inserted at both ends of the central sleeve member 6, and the ends of the first pair of arc-drawing tubes 7 and the second pair of arc-drawing tubes 8 away from the central sleeve member 6 are fixedly connected with an end plate 9. The front and back sides of the first pair of arc-drawing tubes 7 and the second pair of arc-drawing tubes 8 are fixedly connected with a synchronous limiting slide bar 10, and the surface of the synchronous limiting slide bar 10 is connected to the central sleeve The inner wall of the pipe fitting 6 is slidably connected, and the synchronous limit slide bar 10 is set, so that the first pair of arc-drawing tubes 7 and the second pair of arc-drawing tubes 8 cannot rotate during horizontal telescopic displacement, thereby making the effect of higher stability. The tops of the first pair of arc-drawing tubes 7 and the second pair of arc-drawing tubes 8 are hinged with upper arc-shaped half-buckle tubes 11, and the bottoms of the first pair of arc-drawing tubes 7 and the second pair of arc-drawing tubes 8 are hinged with lower arc-shaped half-buckle tubes 12. An inner plug-in rod 13 is inserted into the right side of the second pair of arc-drawing tubes 8, and the left end of the inner plug-in rod 13 is inserted into the interior of the first pair of arc-drawing tubes 7 and fixedly sleeved with the inner wall of the first pair of arc-drawing tubes 7. The inner ring of the right end plate 9 is sleeved on the surface of the inner plug-in rod 13, and the end of the inner plug-in rod 13 located inside the first pair of arc-drawing tubes 7 is fixedly connected with a stable T-shaped inner clamp block 14 The surface of the stable T-shaped inner clamping block 14 is fixedly connected to the inner wall of the first pair of arc-drawing tubes 7. By stabilizing the setting of the T-shaped inner clamping block 14, the connection between the inner plug-in rod 13 and the first pair of arc-drawing tubes 7 is strengthened and stabilized. One end of the first pair of arc-drawing tubes 7 located inside the middle sleeve 6 is fixedly connected with a limited protection gasket. The inner wall of the limited protection gasket is slidably sleeved with the surface of the inner plug-in rod 13. By setting the limited protection gasket, the inner edges of the first pair of arc-drawing tubes 7 and the second pair of arc-drawing tubes 8 are protected. A threaded groove is provided on the right side surface of the inner plug-in rod 13. The right end of the inner plug-in rod 13 is inserted into the fastening internal thread rotating cylinder 15. The inner wall of the fastening internal thread rotating cylinder 15 is threadedly sleeved with the surface on the right side of the inner plug-in rod 13.By setting the first pair of arc-drawing tubes 7, the second pair of arc-drawing tubes 8, the internally inserted card rod 13 and the internally threaded rotating cylinder 15, the first pair of arc-drawing tubes 7 and the second pair of arc-drawing tubes 8 are pulled and displaced toward the inside of the middle sleeve 6 through the threaded telescopic displacement of the internally threaded rotating cylinder 15 and the internally inserted card rod 13, that is, the chemical pipes 3 on both sides are pulled and displaced toward the middle through the upper arc-shaped half-buckle tubes 11 and the lower arc-shaped half-buckle tubes 12 on both sides, so that the chemical pipes 3 on both sides are tightly pressed toward the middle of the butt-jointed tube 1, so that the inner wall of the sealing butt joint sleeve 22 and the outer surface of the built-in connecting tube 2 are continuously squeezed, and the sealing butt joint sleeve 22 and the built-in connecting tube 2 are obliquely connected. The surface displacement difference makes the outer side of the built-in connecting tube 2 and the inner wall of the sealing docking sleeve 22 more stable. The left edge of the fastening internal thread rotating tube 15 is fixedly connected with a stable pressure sleeve 16. The inner ring of the stable pressure sleeve 16 is sleeved on the surface of the inner plug-in rod 13. Through the setting of the stable pressure sleeve 16, the rotation stability of the fastening internal thread rotating tube 15 is enhanced. The surface of the fastening internal thread rotating tube 15 is fixedly sleeved with a resistance extrusion sleeve 17. The front side of the right end plate 9 is fixedly connected with an L-shaped frame plate 18. The surface of the horizontal plate of the L-shaped frame plate 18 is penetrated by a fastening threaded rotating rod 19. The surface of the fastening threaded rotating rod 19 is connected to the L-shaped frame plate 1 The inner wall of the horizontal plate of the upper arc half buckle tube 11 is threadedly connected, and the back of the fastening threaded rotating rod 19 is rotatably connected with an arc-shaped pressure resistance plate 20. The arc-shaped inner wall of the arc-shaped pressure resistance plate 20 is in compression contact with the annular outer surface of the resistance extrusion sleeve 17. The back of the upper arc-shaped half buckle tube 11 is fixedly connected with a sleeve pressure cylinder 24. The inner ring of the sleeve pressure cylinder 24 is sleeved with a bolt rod 25. The lower surface of the bolt rod 25 is sleeved with a cartridge 26. The side of the cartridge 26 is fixedly connected to the back of the lower arc-shaped half buckle tube 12. The surface of the bolt rod 25 is threadedly sleeved with two nuts 27. Through the arrangement of the resistance extrusion sleeve 17, the L-shaped frame plate 18 and the fastening threaded rotating rod 19, the fastening threaded rotating rod 19 and The L-shaped frame plate 18 is driven by the threaded pushing principle, and the L-shaped frame plate 18 is used to drive the arc-shaped pressure resistance plate 20 to push backward, so that the friction resistance generated by the arc-shaped pressure resistance plate 20 and the resistance extrusion sleeve 17 can be used to fix the rotation of the fastening internal thread rotating cylinder 15. The surface of the chemical pipe 3 is fixedly sleeved with a convex ring 21, and the inner walls of the upper arc-shaped half-buckle tube 11 and the lower arc-shaped half-buckle tube 12 are sleeved on the surface of the convex ring 21. Through the setting of the convex ring 21, it can be buckled on the surface of the convex ring 21 through the upper arc-shaped half-buckle tube 11 and the lower arc-shaped half-buckle tube 12, so as to achieve the effect of horizontally pushing the chemical pipes 3 on both sides to move toward the middle.

[0025] When in use, first place the butt joint pipe 1 between two chemical pipes 3 to be butted, and move the chemical pipes 3 toward the middle so that the side edges of the chemical pipes 3 are in contact with the side surfaces of the sealing contact pad 4. At this time, the two ends of the built-in connecting tube 2 fixedly sleeved in the middle of the butt joint pipe 1 are respectively inserted into the two chemical pipes 3, and then the upper arc-shaped half-buckle pipe 11 and the lower arc-shaped half-buckle pipe 12 on both sides of the butt joint pipe 1 are buckled so that the upper arc-shaped half-buckle pipe 11 and the lower arc-shaped half-buckle pipe 12 are buckled to the convex rings 21 on the chemical pipes 3. The bolt rod 25 passes through the sleeve pressing cylinder 24 and the clamping cylinder 26, and the upper arc half-buckle tube 11 and the lower arc half-buckle tube 12 are completely and firmly buckled by using the threaded fastening principle of the bolt rod 25 and the nut 27. Then, the fastening internal thread rotating cylinder 15 on the right side can be rotated, and the threaded telescopic displacement of the fastening internal thread rotating cylinder 15 and the internal plug-in clamping rod 13 can be used to pull the first pair of arc-drawing tubes 7 and the second pair of arc-drawing tubes 8 to the inside of the middle sleeve member 6 for tensioning displacement, that is, through the upper arc half-buckle tube 11 and the lower arc half-buckle tube 12 on both sides. The chemical pipes 3 on both sides are pulled to be extruded and displaced toward the middle, so that the chemical pipes 3 on both sides are tightly pushed toward the middle of the butt joint pipe 1, so that the inner wall of the sealing butt joint sleeve 22 and the outer surface of the built-in connecting tube 2 are continuously extruded, and the inclined displacement difference between the sealing butt joint sleeve 22 and the built-in connecting tube 2 is utilized to make the outer side of the built-in connecting tube 2 and the inner wall of the sealing butt joint sleeve 22 more stably extruded, and the sealing contact pad 4 is cooperated with the side of the chemical pipe 3 to be extruded, and then the fastening threaded turning rod 19 on the L-shaped frame plate 18 is rotated, and the threaded advancement principle of the fastening threaded turning rod 19 and the L-shaped frame plate 18 is utilized to drive the arc pressure resistance plate 20 to push backwards by the L-shaped frame plate 18, so that the friction resistance generated by the extrusion of the arc pressure resistance plate 20 and the resistance extrusion sleeve 17 is fixed to the rotation of the fastening internal thread rotating cylinder 15, so that the butt sealing of the chemical pipe 3 is higher, so as to achieve the purpose of improving the safety of gas transportation in the chemical pipeline. At the same time, the contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0026] In summary, the chemical pipeline safety docking protection component, through the setting of the docking tube 1, and the built-in connecting tube 2, the sealing contact pad 4, the clamping block 5, the middle sleeve 6, the first pair of arc tubes 7, the second pair of arc tubes 8, the end plate 9, the upper arc-shaped half-buckle tube 11, the lower arc-shaped half-buckle tube 12, the internal insertion clamping rod 13, the fastening internal thread rotating tube 15, the clamping convex ring 21, the sealing docking sleeve 22, the limiting built-in clamping ring 23, the sleeve pressure tube 24, the bolt rod 25, the clamping tube 26 and the nut 27, thereby playing a role in that the two ends of the built-in connecting tube 2 are respectively inserted into the inside of the two chemical pipes 3 that need to be docked, and the upper arc-shaped half-buckle tube 11 and the lower arc-shaped half-buckle tube 12 are buckled to the clamping convex ring 21 fixedly set on the surface of the chemical pipe 3. Then, by tightening the internal threaded rotating cylinder 15 and the threaded telescopic displacement of the internal inserted card rod 13, the first pair of arc-drawing tubes 7 and the second pair of arc-drawing tubes 8 are pulled and displaced toward the inside of the central sleeve 6, that is, the chemical pipes 3 on both sides are pulled and extruded toward the middle through the upper arc-shaped half-buckle tubes 11 and the lower arc-shaped half-buckle tubes 12 on both sides, so that the chemical pipes 3 on both sides are tightly pressed toward the middle of the docking pipe 1, thereby utilizing the inclined displacement difference between the sealing docking sleeve 22 and the built-in connecting tube 2, so that the outer side of the built-in connecting tube 2 and the inner wall of the sealing docking sleeve 22 are more stably extruded, and the sealing contact pad 4 is extruded with the side of the chemical pipe 3, thereby making the docking sealing of the chemical pipe 3 higher, so as to achieve the effect of improving the safety of gas transportation in its chemical pipeline.

[0027] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A chemical pipeline safety docking protection assembly, comprising a docking pipe (1), characterized in that: The inner ring of the butt joint tube (1) is fixedly sleeved with the surface of the built-in connecting tube (2); the two ends of the built-in connecting tube (2) are respectively inserted into the interior of two chemical pipes (3); a sealing contact pad (4) is fixedly sleeved on the surface of the built-in connecting tube (2); the side of the sealing contact pad (4) is fixedly connected to the side of the butt joint tube (1); the edge of the chemical pipe (3) is in extrusion contact with the side edge of the sealing contact pad (4); the surface of the built-in connecting tube (2) is sleeved with two sealing butt joint sleeves (22); the outer surface of the sealing butt joint sleeves (22) is in extrusion contact with the inner wall of the chemical pipe (3); the positive end of the butt joint tube (1) is in extrusion contact with the inner wall of the chemical pipe (3); A clamping block (5) is fixedly connected to the surface, a central sleeve member (6) is fixedly sleeved in the middle of the clamping block (5), a first pair of arc-drawing tubes (7) and a second pair of arc-drawing tubes (8) are slidably inserted into the two ends of the central sleeve member (6), an end of the first pair of arc-drawing tubes (7) and the second pair of arc-drawing tubes (8) away from the central sleeve member (6) is fixedly connected to an end plate (9), the tops of the first pair of arc-drawing tubes (7) and the second pair of arc-drawing tubes (8) are hinged with an upper arc-shaped half-buckle tube (11), the bottoms of the first pair of arc-drawing tubes (7) and the second pair of arc-drawing tubes (8) are hinged with a lower arc-shaped half-buckle tube (12), and the right end of the second pair of arc-drawing tubes (8) is hinged with a lower arc-shaped half-buckle tube (12). An inner card rod (13) is inserted into the side, the left end of the inner card rod (13) is inserted into the interior of the first pair of arc-drawing tubes (7) and is fixedly sleeved with the inner wall of the first pair of arc-drawing tubes (7), the inner ring of the right end plate (9) is sleeved on the surface of the inner card rod (13), the right side surface of the inner card rod (13) is provided with a thread groove, the right end of the inner card rod (13) is inserted into a fastening internal thread rotating cylinder (15), the inner wall of the fastening internal thread rotating cylinder (15) is threadedly sleeved with the surface of the right side of the inner card rod (13), the left edge of the fastening internal thread rotating cylinder (15) is fixedly connected with a stabilizing pressure sleeve (16), the stabilizing pressure sleeve The inner ring of the tube (16) is sleeved on the surface of the inner plug-in rod (13); the back of the upper arc-shaped half-buckle tube (11) is fixedly connected with a sleeve pressure tube (24); the inner ring of the sleeve pressure tube (24) is sleeved with a bolt rod (25); the lower surface of the bolt rod (25) is sleeved with a sleeve (26); the side of the sleeve (26) is fixedly connected to the back of the lower arc-shaped half-buckle tube (12); two nuts (27) are threadedly sleeved on the surface of the bolt rod (25); a convex ring (21) is fixedly sleeved on the surface of the chemical tube (3); and the inner walls of the upper arc-shaped half-buckle tube (11) and the lower arc-shaped half-buckle tube (12) are sleeved on the surface of the convex ring (21).

2. A chemical pipeline safety docking protection assembly according to claim 1, characterized in that: The inner wall of the chemical pipe (3) is fixedly sleeved with a limiting built-in clamping ring (23), and the side surface of the limiting built-in clamping ring (23) is in extrusion contact with the side edge of the sealing docking sleeve (22).

3. A chemical pipeline safety docking protection assembly according to claim 1, characterized in that: A resistance extrusion sleeve (17) is fixedly sleeved on the surface of the fastening internal thread rotating cylinder (15), an L-shaped frame plate (18) is fixedly connected to the front surface of the right end plate (9), and a fastening threaded rotating rod (19) penetrates the surface of the horizontal plate of the L-shaped frame plate (18).

4. A chemical pipeline safety docking protection assembly according to claim 3, characterized in that: The surface of the fastening threaded rotating rod (19) is threadedly connected to the inner wall of the horizontal plate of the L-shaped frame plate (18), and the back side of the fastening threaded rotating rod (19) is rotatably connected to an arc-shaped pressure resistance plate (20), and the arc-shaped inner wall of the arc-shaped pressure resistance plate (20) is in extrusion contact with the annular outer surface of the resistance extrusion sleeve (17).

5. A chemical pipeline safety docking protection assembly according to claim 1, characterized in that: The front and back surfaces of the first pair of arc-drawing tubes (7) and the second pair of arc-drawing tubes (8) are fixedly connected with synchronous limit slide bars (10), and the surfaces of the synchronous limit slide bars (10) are slidably connected to the inner wall of the middle sleeve member (6).

6. A chemical pipeline safety docking protection assembly according to claim 1, characterized in that: The end of the internal insertion rod (13) located inside the first pair of arc-drawing tubes (7) is fixedly connected to a stable T-shaped internal clamping block (14), and the surface of the stable T-shaped internal clamping block (14) is fixedly connected to the inner wall of the first pair of arc-drawing tubes (7).

7. A chemical pipeline safety docking protection assembly according to claim 1, characterized in that: One end of the first pair of arc-drawing tubes (7) located inside the middle sleeve member (6) is fixedly connected to a limit protection washer, and the inner wall of the limit protection washer is slidably sleeved with the surface of the internal insertion rod (13).

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