Modularized polytetrafluoroethylene lining pipeline connecting structure capable of being rapidly replaced

Abstract

The utility model relates to the technical field of pipeline connection, and discloses a quick-replaceable modularized polytetrafluoroethylene lining pipeline connection structure which comprises a first flange ring and a second flange ring, and through holes are formed in the upper and lower positions in the first flange ring and the second flange ring. The side edges of the first connecting pipeline and the second connecting pipeline are each provided with a limiting disc. The hollow grooves are formed in the center positions in the first flange ring and the second flange ring, and then the third first locking nut is installed at the other threaded end of the connecting guide rod, so that the connecting guide rod penetrates through the through hole in the second flange ring; the first locking nut is installed on the first flange ring, the position from one side edge of the second flange ring to the position of the third first locking nut is limited, then the fourth first locking nut is installed in the direction of the other side edge of the second flange ring, and therefore the first flange ring and the second flange ring are matched to form a main body. And certain disassembly convenience is improved.

Description

Technical Field

[0001] This utility model relates to the field of pipe connection technology, specifically a modular PTFE-lined pipe connection structure that can be quickly replaced. Background Technology

[0002] PTFE-lined pipes are pipes with polytetrafluoroethylene (PTFE) material lining their inner walls. These pipes have excellent corrosion resistance and can resist corrosion from various strong acids, strong alkalis, and organic solvents. Therefore, they can be used to transport various strong acids, strong alkalis, pharmaceutical raw materials, intermediates, and finished products containing corrosive components, and are widely used in various industrial fields.

[0003] Due to the application of PTFE-lined pipes, pipe connections are required during use. Pipe connection refers to connecting prefabricated pipe sections into a complete system according to the design drawings. Nowadays, in order to make pipe connection work more convenient, modular flange rings are gradually being used. However, if disassembly and replacement are inconvenient when using this combination, it can easily cause inconvenience to the staff. Utility Model Content

[0004] The purpose of this utility model is to provide a modular PTFE-lined pipe connection structure that can be quickly replaced, in order to solve the problem mentioned in the background art that, in order to facilitate pipe connection work, modular flange rings are gradually being used in combination. However, if disassembly and replacement are inconvenient when using such combinations, it will easily cause inconvenience to the workers.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a modular PTFE-lined pipe connection structure that can be quickly replaced, comprising a first flange ring and a second flange ring. Through holes are provided at the upper and lower positions of both the first and second flange rings, and a connecting guide rod passes through each through hole. A first locking nut is connected to the outside of the connecting guide rod. A hollow groove is formed in the middle of the first and second flange rings, and slide rails are fixed at the upper and lower positions of the inner wall of the hollow groove. A second connecting pipe is inserted into the hollow groove of the first flange ring, and a first connecting pipe is inserted into the hollow groove of the second flange ring. Guide blocks are fixed at the top and bottom sides of both the first and second connecting pipes, and limit plates are installed on the sides of both the first and second connecting pipes.

[0006] As a further technical solution of this utility model, the slide rail is symmetrically distributed about the central axis of the first flange ring, and the guide block is symmetrically distributed about the central axis of the second connecting pipe.

[0007] As a further technical solution of this utility model, the slide rail and the guide block are adapted to each other, and a sliding guide is formed between the slide rail and the guide block.

[0008] As a further technical solution of this utility model, the connecting guide rod is fixed with a threaded end, and a threaded connection is formed between the threaded end and the first locking nut.

[0009] As a further technical solution of this utility model, a connecting groove is provided in the limiting plate, and a connecting bolt is connected in the connecting groove.

[0010] As a further technical solution of this utility model, a positioning groove is provided on the first flange ring and the second flange ring at the position corresponding to the connecting bolt, and the connecting groove and the connecting bolt form a threaded connection.

[0011] As a further technical solution of this utility model, mounting plates are fixed at the upper and lower positions on the other side of the first connecting pipe and the second connecting pipe. The mounting plates have mounting holes, and locking pins are inserted into the mounting holes. Second locking nuts are connected to both ends of the locking pins.

[0012] As a further technical solution of this utility model, the second locking nut is symmetrically distributed about the central axis of the locking pin, and a threaded connection is formed between the second locking nut and the locking pin.

[0013] Compared with the prior art, the beneficial effects of this utility model are: this modular PTFE-lined pipe connection structure that can be quickly replaced not only improves the ease of disassembly, but also improves the connection capacity and guiding assembly capacity of the pipe connection structure.

[0014] (1) Hollow grooves are opened in the center of the first flange ring and the second flange ring, and through holes are opened in the upper and lower positions of the first flange ring and the second flange ring. The through holes are located in the upper and lower positions of the hollow grooves. First locking nuts are inserted into the through holes in the first flange ring. The position of the first flange ring is fixed by the two first locking nuts. Then, a third first locking nut is installed on the other threaded end of the connecting guide rod. Then, the connecting guide rod passes through the through holes in the second flange ring, so that one side of the second flange ring is limited to the position of the third first locking nut. Then, a fourth first locking nut is installed in the direction of the other side of the second flange ring. After the first flange ring and the second flange ring are matched, a main body is formed. When disassembling, it is only necessary to disassemble in sequence, which improves the disassembly convenience.

[0015] (2) By inserting the first connecting pipe and the second connecting pipe into the hollow grooves in the first flange ring and the second flange ring respectively, until the limiting plate reaches the side of the hollow groove and is limited, the mounting pieces of the first connecting pipe and the second connecting pipe are flush with each other. Then, the locking pins are inserted into the mounting holes in the two mounting pieces. At this time, the second locking nut is used to lock the position at both ends of the locking pin, thereby improving the overall connection capability during the operation.

[0016] (3) Hollow grooves are opened in the center of the first flange ring and the second flange ring. The slide rails are fixed at the upper and lower positions of the inner wall of the hollow grooves. The slide rails are fixed at the upper and lower positions of the first connecting pipe and the second connecting pipe respectively. Therefore, during assembly, the guide block slides along the slide rail to guide the assembly until the limiting plate reaches the side of the hollow groove and is then limited. This improves the overall guiding assembly capability during the working process. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0018] Figure 2 This is a partial frontal cross-sectional view of the mounting plate of this utility model;

[0019] Figure 3 This is a partial side view of the first flange ring structure of this utility model;

[0020] Figure 4 For the present utility model Figure 1 Enlarged cross-sectional view of point A in the middle.

[0021] In the diagram: 1. First flange ring; 2. Connecting guide rod; 3. First locking nut; 4. Second flange ring; 5. First connecting pipe; 6. Through hole; 7. Mounting plate; 8. Second connecting pipe; 9. Locking pin; 10. Mounting hole; 11. Second locking nut; 12. Slide rail; 13. Guide block; 14. Connecting groove; 15. Connecting bolt; 16. Limiting plate. Detailed Implementation

[0022] 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.

[0023] Please see Figure 1-4This utility model provides an embodiment of a modular PTFE-lined pipe connection structure that can be quickly replaced, including a first flange ring 1 and a second flange ring 4. Through holes 6 are provided at the upper and lower positions of both the first flange ring 1 and the second flange ring 4. A connecting guide rod 2 passes through the through holes 6. A first locking nut 3 is connected to the outside of the connecting guide rod 2. A hollow groove is formed in the middle of the first flange ring 1 and the second flange ring 4. Slide rails 12 are fixed at the upper and lower positions of the inner wall of the hollow groove. A second connecting pipe 8 is inserted into the hollow groove of the first flange ring 1. A first connecting pipe 5 is inserted into the hollow groove of the second flange ring 4. Guide blocks 13 are fixed at the top and bottom sides of both the first connecting pipe 5 and the second connecting pipe 8. Limiting plates 16 are installed on the sides of both the first connecting pipe 5 and the second connecting pipe 8.

[0024] As a further technical solution of this utility model, the slide rail 12 is symmetrically distributed about the central axis of the first flange ring 1, and the guide block 13 is symmetrically distributed about the central axis of the second connecting pipe 8.

[0025] As a further technical solution of this utility model, the slide rail 12 and the guide block 13 are adapted to each other, and a sliding guide is formed between the slide rail 12 and the guide block 13.

[0026] As a further technical solution of this utility model, the external end of the connecting guide rod 2 is fixed with a threaded end, and a threaded connection is formed between the threaded end and the first locking nut 3.

[0027] As a further technical solution of this utility model, a connecting groove 14 is provided in the limiting plate 16, and a connecting bolt 15 is connected in the connecting groove 14.

[0028] As a further technical solution of this utility model, a positioning groove is provided on the first flange ring 1 and the second flange ring 4 at the position corresponding to the connecting bolt 15, and a threaded connection is formed between the connecting groove 14 and the connecting bolt 15.

[0029] As a further technical solution of this utility model, mounting plates 7 are fixed at the upper and lower positions on the other side of the first connecting pipe 5 and the second connecting pipe 8. Mounting holes 10 are opened in the mounting plates 7, and locking pins 9 are inserted into the mounting holes 10. Second locking nuts 11 are connected to both ends of the locking pins 9.

[0030] As a further technical solution of this utility model, the second locking nut 11 is symmetrically distributed about the central axis of the locking pin 9, and a threaded connection is formed between the second locking nut 11 and the locking pin 9;

[0031] Further, the second connecting pipe 8 is assembled at the position of the first flange ring 1 until the limiting plate 16 reaches the side of the hollow groove and is then limited. The connecting bolt 15 is then threadedly locked with the connecting groove 14. At this time, the tail end of the connecting bolt 15 is connected to the position of the positioning groove and locked.

[0032] Working principle: First, hollow grooves are made in the center of both the first flange ring 1 and the second flange ring 4 during operation, and through holes 6 are made at the top and bottom of the first flange ring 1 and the second flange ring 4. The position of the first flange ring 1 is first fixed by two first locking nuts 3. Then, the guide block 13 is slid along the slide rail 12 for assembly. The second connecting pipe 8 is assembled first at the position of the first flange ring 1 until the limiting plate 16 reaches the side of the hollow groove and is then limited. After assembly, the position of the second connecting pipe 8 is locked by connecting bolts 15. Then, a third first locking nut is installed on the other threaded end of the connecting guide rod 2. 3. Then, let the connecting guide rod 2 pass through the through hole 6 in the second flange ring 4, so that one side of the second flange ring 4 is limited to the position of the third first locking nut 3. Then, install the fourth first locking nut 3 in the direction of the other side of the second flange ring 4. After the first flange ring 1 and the second flange ring 4 are matched, a main body is formed. Then, assemble the first connecting pipe 5 in the same way. At this time, the mounting pieces 7 of the first connecting pipe 5 and the second connecting pipe 8 are flush with each other. Then, insert the locking pin 9 into the mounting hole 10 in the two mounting pieces 7. Then, use the second locking nut 11 to lock the position at both ends of the locking pin 9.

[0033] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

Claims

1. A modular PTFE-lined pipe connection structure that can be quickly replaced, comprising a first flange ring (1) and a second flange ring (4), characterized in that: Through holes (6) are provided at the upper and lower positions of the first flange ring (1) and the second flange ring (4). A connecting guide rod (2) passes through the through hole (6). A first locking nut (3) is connected to the outside of the connecting guide rod (2). A hollow groove is formed in the middle position of the first flange ring (1) and the second flange ring (4). A slide rail (12) is fixed at the upper and lower positions of the inner wall of the hollow groove. A second connecting pipe (8) is inserted in the hollow groove of the first flange ring (1). A first connecting pipe (5) is inserted in the hollow groove of the second flange ring (4). Guide blocks (13) are fixed at the top and bottom sides of the first connecting pipe (5) and the second connecting pipe (8). Limiting plates (16) are installed on the sides of the first connecting pipe (5) and the second connecting pipe (8).

2. The modular PTFE-lined pipe connection structure with quick replacement according to claim 1, characterized in that: The slide rail (12) is symmetrically distributed about the central axis of the first flange ring (1), and the guide block (13) is symmetrically distributed about the central axis of the second connecting pipe (8).

3. The modular PTFE-lined pipe connection structure with quick replacement according to claim 1, characterized in that: The slide rail (12) and the guide block (13) are adapted to each other, and a sliding guide is formed between the slide rail (12) and the guide block (13).

4. The modular PTFE-lined pipe connection structure with quick replacement according to claim 1, characterized in that: The connecting guide rod (2) has a threaded end fixed to its outside, and the threaded end forms a threaded connection with the first locking nut (3).

5. The modular PTFE-lined pipe connection structure with quick replacement according to claim 1, characterized in that: The limiting plate (16) has a connecting groove (14) inside, and a connecting bolt (15) is connected inside the connecting groove (14).

6. The modular PTFE-lined pipe connection structure with quick replacement according to claim 5, characterized in that: The first flange ring (1) and the second flange ring (4) are provided with positioning grooves at positions corresponding to the connecting bolts (15), and the connecting grooves (14) and the connecting bolts (15) form a threaded connection.

7. The modular PTFE-lined pipe connection structure with quick replacement according to claim 1, characterized in that: Mounting plates (7) are fixed at the upper and lower positions on the other side of the first connecting pipe (5) and the second connecting pipe (8). Mounting holes (10) are opened in the mounting plates (7), and locking pins (9) are inserted in the mounting holes (10). Second locking nuts (11) are connected to both ends of the locking pins (9).

8. The modular PTFE-lined pipe connection structure with quick replacement according to claim 7, characterized in that: The second locking nut (11) is symmetrically distributed about the central axis of the locking pin (9), and a threaded connection is formed between the second locking nut (11) and the locking pin (9).

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