Corrosion-resistant PP (polypropylene) and FRPP (fiber reinforced polypropylene) enhanced pipe valve quick sealing and connecting structure

Abstract

The utility model relates to the technical field of pipe valves, and discloses a corrosion-resistant PP (polypropylene) and FRPP (fiber reinforced polypropylene) enhanced pipe valve quick sealing and connecting structure, which solves the problem of poor convenience in connection of existing pipe valves and comprises a connecting structure body connected between a polypropylene pipe and a valve. The connecting structure body is composed of a flange assembly, a first sealing ring, a second sealing ring, a first limiting clamping cover, a second limiting clamping cover and a hoop, the flange assembly is in hot melting connection with the polypropylene pipe, the hoop is connected to the end, close to the flange assembly, of the outer surface of the polypropylene pipe, and the first sealing ring and the second sealing ring are both connected between the flange assembly and the valve. The first limiting clamping cover and the second limiting clamping cover are arranged at one end of the flange assembly and one end of the valve in a sleeving mode and connected through a plurality of bolts. Through the connecting structure, the connecting speed can be effectively increased compared with a traditional connecting mode.

Description

Technical Field

[0001] This utility model belongs to the field of pipe and valve technology, specifically a quick-sealing connection structure for reinforced pipe and valve components made of corrosion-resistant PP or FRPP. Background Technology

[0002] PP and FRPP pipes are both polypropylene pipes. PP is ordinary polypropylene pipe, and FRPP is glass fiber reinforced polypropylene pipe. Polypropylene pipes usually need to be connected to valves during use. The existing connection method is to first install a flange on the end of the polypropylene pipe, and then connect and fix the flange to the valve flange with at least eight sets of bolts. This connection method is not convenient for quick connection. When there are many pipes and valves to be connected, it will affect the processing speed. Therefore, this application proposes a quick sealing connection structure for corrosion-resistant PP and FRPP reinforced pipes and valves. Utility Model Content

[0003] In view of the above situation and to overcome the defects of the prior art, this utility model provides a quick-sealing connection structure for reinforced pipe valves made of corrosion-resistant PP and FRPP, which effectively solves the problem of poor connection convenience of existing pipe valves.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a corrosion-resistant reinforced pipe valve quick-sealing connection structure for PP and FRPP, comprising a connection structure body, wherein the connection structure body is connected between a polypropylene pipe and a valve, the connection structure body is composed of a flange assembly, a first sealing ring, a second sealing ring, a limiting cover one, a limiting cover two, and a clamp, the flange assembly is heat-fused to the polypropylene pipe, the clamp is connected to the outer surface of the polypropylene pipe near the flange assembly, the first sealing ring and the second sealing ring are both connected between the flange assembly and the valve, the limiting cover one and the limiting cover two are sleeved on one end of the flange assembly and the valve, and the limiting cover one and the limiting cover two are connected by several bolts;

[0005] The flange assembly consists of flange one, metal sleeve one and metal sleeve two. Both metal sleeve one and metal sleeve two are welded to the end of flange one near the polypropylene pipe. A connecting groove matching the polypropylene pipe is formed between metal sleeve one and metal sleeve two.

[0006] Both the first and second limit cover consist of a cover body and two connecting plates. The two connecting plates are fixedly connected to both ends of the cover body. The cover body has a limit slot inside, and both sides of the limit slot are inclined.

[0007] Preferably, the flange one end near the valve has an annular groove one and an annular groove two that match the first sealing ring and the second sealing ring.

[0008] Preferably, the outer diameter of the first metal sleeve is the same as the inner diameter of the polypropylene pipe, and the inner diameter of the second metal sleeve is the same as the outer diameter of the polypropylene pipe.

[0009] Preferably, an axial positioning cone is fixedly provided on the side of the flange near the valve end.

[0010] Preferably, both ends of the valve are fixedly provided with flange two, and flange two is provided with a plurality of axial positioning holes that match the axial positioning cone. The ends of flange two and flange one away from the first sealing ring and the second sealing ring are both inclined structures.

[0011] Preferably, the connecting plate has several bolt mounting holes.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] (1) In operation, by setting up a flange assembly consisting of flange one, metal sleeve one and metal sleeve two, it is possible to achieve a wrapping connection of the inner and outer surfaces of the polypropylene pipe port, thereby improving the stability and sealing of the connection. By setting up clamps, the polypropylene pipe can be connected and reinforced with metal sleeve one, further improving the stability of the connection.

[0014] (2) By setting the first sealing ring and the second sealing ring, the sealing performance of the connection between flange one and flange two can be improved. By setting the annular groove one and the annular groove two, the first sealing ring and the second sealing ring can be limited to avoid misalignment of the first sealing ring and the second sealing ring during connection.

[0015] (3) By setting up a limiting clamp cover one and a limiting clamp cover two consisting of a clamp cover body and two connecting plates, flange one and flange two can be connected in a limiting manner. During the connection, pressure can be continuously applied to improve the stability of the connection. The limiting clamp cover one and the limiting clamp cover two only need to be connected by four sets of bolts, which reduces the number of bolts by half compared to the traditional method, thereby improving the stability of the connection. Attached Figure Description

[0016] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0017] In the attached diagram:

[0018] Figure 1 This is a schematic diagram of the quick-sealing connection structure of the corrosion-resistant PP and FRPP reinforced pipe valves of this utility model;

[0019] Figure 2This is an exploded view of the quick-sealing connection structure of the corrosion-resistant PP and FRPP reinforced pipe valves of this utility model;

[0020] Figure 3 This is a schematic diagram of the second structure of the limiting cover of this utility model;

[0021] Figure 4 This is a schematic diagram of the flange assembly structure of this utility model;

[0022] In the diagram: 1. Connecting structure body; 2. Polypropylene pipe; 3. Valve; 4. Flange assembly; 5. First sealing ring; 6. Second sealing ring; 7. Limiting cover one; 8. Limiting cover two; 9. Clamp; 10. Flange one; 11. Metal sleeve one; 12. Metal sleeve two; 13. Cover body; 14. Connecting plate; 15. Limiting groove; 16. Annular groove one; 17. Annular groove two; 18. Connecting groove; 19. Axial positioning cone; 20. Flange two; 21. Axial positioning hole; 22. Bolt mounting hole. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0024] Depend on Figures 1 to 4 This invention discloses a quick-sealing connection structure for corrosion-resistant PP and FRPP reinforced pipe valves, comprising a connection structure body 1 connected between a polypropylene pipe 2 and a valve 3. The connection structure body 1 consists of a flange assembly 4, a first sealing ring 5, a second sealing ring 6, a first limiting cover 7, a second limiting cover 8, and a clamp 9. The flange assembly 4 is heat-fused to the polypropylene pipe 2. The clamp 9 is connected to the outer surface of the polypropylene pipe 2 near the flange assembly 4. The first sealing ring 5 and the second sealing ring 6 are both connected between the flange assembly 4 and the valve 3. The first limiting cover 7 and the second limiting cover 8 are sleeved on one end of the flange assembly 4 and the valve 3, and the first limiting cover 7 and the second limiting cover 8 are connected by several bolts.

[0025] During installation, the flange assembly 4 is heat-fused to the polypropylene pipe 2 and reinforced with clamps 9. Then, the flange assembly 4 is connected to the valve 3, and the connection sealing is improved by the first sealing ring 5 and the second sealing ring 6. Finally, the limit cover 1 7 and the limit cover 2 8 are installed and fixed with bolts.

[0026] The flange assembly 4 consists of a flange 10, a metal sleeve 11 and a metal sleeve 2. Both the metal sleeve 11 and the metal sleeve 2 are welded to the end of the flange 10 near the polypropylene pipe 2. A connecting groove 18 matching the polypropylene pipe 2 is formed between the metal sleeve 11 and the metal sleeve 2.

[0027] Metal sleeve 11 and metal sleeve 212 are heat-fused to the inner and outer surfaces of the polypropylene pipe 2 port, respectively, to achieve a wrap-around connection, which improves both the stability and sealing of the connection.

[0028] Both the first limiting cover 7 and the second limiting cover 8 are composed of a cover body 13 and two connecting plates 14. The two connecting plates 14 are fixedly connected to both ends of the cover body 13. The inside of the cover body 13 is provided with a limiting slot 15. Both sides of the inside of the limiting slot 15 are inclined structures.

[0029] The main body 13 of the retaining cover enables the limiting connection of flange 10 and flange 20. Both sides of the limiting retaining groove 15 are inclined structures, which can achieve continuous pre-tightening during connection and improve the stability of the connection.

[0030] The flange 10 near the valve 3 has an annular groove 16 and an annular groove 17 that match the first sealing ring 5 and the second sealing ring 6, which can limit the first sealing ring 5 and the second sealing ring 6.

[0031] The outer diameter of metal sleeve 11 is the same as the inner diameter of polypropylene pipe 2, and the inner diameter of metal sleeve 2 12 is the same as the outer diameter of polypropylene pipe 2, which can improve the tightness of the connection, thereby improving the connection stability and sealing performance.

[0032] An axial positioning cone 19 is fixedly installed on the side of flange 10 near valve 3, which can form a limiting function with flange 20.

[0033] Both ends of valve 3 are fixedly provided with flange 20. Flange 20 has several axial positioning holes 21 that match the axial positioning cone 19. The ends of flange 20 and flange 10 away from the first sealing ring 5 and the second sealing ring 6 are both inclined structures. The axial positioning holes 21 can form axial limiting with the axial positioning cone 19. The ends of flange 20 and flange 10 away from the first sealing ring 5 and the second sealing ring 6 are both inclined structures, which can form a fitting effect with the limiting snap groove 15, increase the force-bearing area, and thus improve the connection stability.

[0034] The connecting plate 14 has several bolt mounting holes 22, which can be used to connect and fix the parts with bolts.

[0035] In operation, by setting up a flange assembly consisting of flange one, metal sleeve one, and metal sleeve two, a wrap-around connection can be achieved on the inner and outer surfaces of the polypropylene pipe port, improving the stability and sealing of the connection. By setting a clamp, the connection between the polypropylene pipe and metal sleeve one can be reinforced, further improving the stability of the connection. By setting a first sealing ring and a second sealing ring, the sealing performance of the connection between flange one and flange two can be improved. By setting an annular groove one and annular groove two, the first and second sealing rings can be limited, preventing misalignment of the first and second sealing rings during connection. By setting a limiting clamp cover one and a limiting clamp cover two consisting of a clamp cover body and two connecting plates, flange one and flange two can be limited and connected. During connection, continuous pressure can be applied, improving the stability of the connection. Only four sets of bolts are needed to connect the limiting clamp cover one and the limiting clamp cover two, reducing the number of bolts by half compared to the traditional method, thereby improving the stability of the connection.

Claims

1. A corrosion-resistant reinforced quick-sealing connection structure for pipe valves made of PP or FRPP, comprising a connection structure body (1), characterized in that: The connecting structure body (1) is connected between the polypropylene pipe (2) and the valve (3). The connecting structure body (1) consists of a flange assembly (4), a first sealing ring (5), a second sealing ring (6), a first limiting cover (7), a second limiting cover (8), and a clamp (9). The flange assembly (4) is heat-fused to the polypropylene pipe (2). The clamp (9) is connected to the outer surface of the polypropylene pipe (2) near the flange assembly (4). The first sealing ring (5) and the second sealing ring (6) are both connected between the flange assembly (4) and the valve (3). The first limiting cover (7) and the second limiting cover (8) are fitted onto one end of the flange assembly (4) and the valve (3). The first limiting cover (7) and the second limiting cover (8) are connected by several bolts. The flange assembly (4) consists of a flange (10), a metal sleeve (11) and a metal sleeve (12). The metal sleeve (11) and the metal sleeve (12) are both welded to the end of the flange (10) near the polypropylene pipe (2). A connecting groove (18) matching the polypropylene pipe (2) is formed between the metal sleeve (11) and the metal sleeve (12). Both the first limiting cover (7) and the second limiting cover (8) are composed of a cover body (13) and two connecting plates (14). The two connecting plates (14) are fixedly connected to the two ends of the cover body (13). The inside of the cover body (13) is provided with a limiting slot (15). The two sides inside the limiting slot (15) are inclined structures.

2. The quick-sealing connection structure for corrosion-resistant PP or FRPP reinforced pipe valves according to claim 1, characterized in that: The flange one (10) has an annular groove one (16) and an annular groove two (17) that match the first sealing ring (5) and the second sealing ring (6) at one end near the valve (3).

3. The quick-sealing connection structure for corrosion-resistant PP or FRPP reinforced pipe valves according to claim 1, characterized in that: The outer diameter of the first metal sleeve (11) is the same as the inner diameter of the polypropylene pipe (2), and the inner diameter of the second metal sleeve (12) is the same as the outer diameter of the polypropylene pipe (2).

4. The quick-sealing connection structure for corrosion-resistant PP or FRPP reinforced pipe valves according to claim 1, characterized in that: An axial positioning cone (19) is fixedly installed on the side of the flange (10) near the valve (3).

5. The quick-sealing connection structure for corrosion-resistant PP or FRPP reinforced pipe valves according to claim 4, characterized in that: Both ends of the valve (3) are fixedly provided with flange two (20). Several axial positioning holes (21) matching the axial positioning cone (19) are opened on flange two (20). The ends of flange two (20) and flange one (10) away from the first sealing ring (5) and the second sealing ring (6) are both inclined structures.

6. The quick-sealing connection structure for corrosion-resistant PP or FRPP reinforced pipe valves according to claim 1, characterized in that: The connecting plate (14) has several bolt mounting holes (22).

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