Disassembly-free corrugated pipe joint nut

Abstract

The invention discloses a disassembly-free corrugated pipe joint nut, and particularly relates to the technical field of corrugated pipe joints, the disassembly-free corrugated pipe joint nut comprises a main body piece, the interiors of the two ends of the main body piece are connected with a first splicing ring and a second splicing ring correspondingly, and the end, located on the outer side of the main body piece, of the first splicing ring is fixedly connected with a first attaching ring; and the end part of the second splicing ring is fixedly connected with a second attaching ring on the outer side of the main body piece. According to the corrugated pipe joint nut designed by the invention, a split type structural design is adopted, all parts are convenient to assemble and disassemble, easy-to-wear parts are also convenient to disassemble and replace, and the assembled nut structure gradually extrudes the corrugated pipe joint penetrating through the inside by using a sealing pressing ring, so that the sealing performance after connection is improved, and the service life of the corrugated pipe joint is prolonged. Due to the fact that the split type assembly structure is adopted, a local structure can be replaced for use according to the actual size of the corrugated pipe joint, complete replacement is not needed, and resource waste is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of bellows joints, and more particularly to a disassembly-free bellows joint nut. Background Art

[0002] As a flexible pressure-resistant pipe fitting, bellows are widely used in liquid and gas transportation systems. Their characteristics include good flexibility, light weight, corrosion resistance and fatigue resistance. During the installation and use of bellows, it is often necessary to connect multiple sections of bellows to meet the needs of various complex pipeline systems. Traditional connection methods, such as welding and threaded connections, can meet the connection needs to a certain extent, but they have problems such as complex operation, high cost and inconvenience in quick disassembly and assembly.

[0003] After searching, the Chinese patent with announcement number CN221258063U discloses a one-way installation bellows joint without disassembly of nuts. An inner plug is installed in the joint body, and the inner plug fixes the bellows with high waterproofness. The inner plug is subjected to the pressure applied by nut two. The joint is easy to rotate on one side, and the reverse double threads on the joint body can realize one-way assembly and fixation of the bellows. The two nuts lock the bellows joint, which is easy to disassemble and assemble, is conducive to the actual connection and use of the bellows, and effectively waterproofs the connection.

[0004] A nut structure is designed in the above-mentioned non-disassembly nut one-way installation bellows joint, but in actual use, it is not much different from the traditional nut structure design, both of which adopt an integrated structure. Since the connecting surface of the nut itself is a vulnerable part, after being damaged after long-term use, the nut needs to be replaced as a whole, which is a waste of resources. Summary of the invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a disassembly-free bellows joint nut.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a disassembly-free bellows joint nut, comprising a main body, wherein the first and second splicing rings are respectively connected to the inside of the two end heads of the main body, the end of the first splicing ring is located on the outside of the main body and is fixedly connected to the first fitting ring, the end of the second splicing ring is located on the outside of the main body and is fixedly connected to the second fitting ring, the two ends of the main body are located on the outside of the first fitting ring and the second fitting ring and are respectively connected to the first outer shell and the second outer shell, the inner walls of the end heads of the first outer shell and the second outer shell are both fixedly connected to fixing rings, the inside of the fixing ring is provided with a hole for the bellows joint to pass through, and the inner wall of the hole is provided with a sealing pressure ring.

[0007] As a further improvement of the technical solution of the present invention, the main body comprises a cylinder connected to the outside of the first splicing ring and the second splicing ring, and a convex ring is provided at the middle of the outer wall of the cylinder between the first outer shell and the second outer shell.

[0008] As a further improvement of the technical solution of the present invention, a blocking ring is fixedly provided at the inner side position of the inner wall of the cylinder corresponding to the end of the first splicing ring and the second splicing ring, and the outer walls of the two blocking rings are bonded with sealing rings by hot melt adhesive.

[0009] As a further improvement of the technical solution of the present invention, the outer surfaces and inner surfaces of the first splicing ring and the second splicing ring are respectively provided with external threads and internal threads, and the inner surfaces of the two end portions of the cylinder are provided with second internal threads at positions corresponding to the external thread structures of the first splicing ring and the second splicing ring, and the first splicing ring and the second splicing ring are connected to the cylinder through threads.

[0010] As a further improvement of the technical solution of the present invention, the outer surfaces of both ends of the cylinder are provided with external threads at both sides of the convex ring, and the inner surfaces of the first outer shell and the second outer shell are provided with first internal threads with external thread structures matching the external threads.

[0011] As a further improvement of the technical solution of the present invention, the fixing ring and the inner walls of the ends of the first outer shell and the second outer shell are seamlessly welded, and the sealing pressure ring and the fixing ring are fixed by hot melt adhesive.

[0012] As a further improvement of the technical solution of the present invention, the sealing pressure ring is a rubber material component with a conical cross-section.

[0013] Beneficial effects of the present invention: 1. The bellows joint nut designed by the present invention adopts a split structure design, which is convenient for disassembly and replacement of parts that are easy to wear, reducing waste. After the bellows joint passes through the interior of the main body, the two ends of the main body are first connected to the first splicing ring and the second splicing ring respectively. After the first splicing ring and the second splicing ring are screwed in, the sealing ring is squeezed to maintain the sealing performance after the connection. At this time, the first outer shell and the second outer shell are threadedly connected on the outside of the main body. The fixing ring on the inner wall of the first outer shell and the second outer shell end is provided with a sealing pressure ring. The sealing pressure ring is a rubber material component with a conical cross-section. After the first outer shell and the second outer shell are connected on the outside of the main body, the bellows joint passing through the inside is gradually squeezed by the sealing pressure ring, thereby improving the sealing performance after the connection, and using the friction force of the squeezing to improve the stability after assembly; 2. Due to the adoption of a split assembly structure, the internal threads in the first splicing ring and the second splicing ring are used to form a stable assembly with the bellows joint. The first splicing ring and the second splicing ring are easy to disassemble and replace, which makes it convenient to prepare splicing ring structures with internal threaded hole structures of various sizes. At the same time, the sealing pressure ring arranged inside the fixed ring is also easy to disassemble, so that different thicknesses and inner hole sealing pressure ring structures can be replaced according to actual needs, so that the designed bellows joint nut can be switched and used according to the actual size of the bellows joint without complete replacement, and can be adapted to bellows joints of various models and sizes for assembly and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is an exploded view of the present invention.

[0015] Figure 2 It is a schematic diagram of the structure after assembly of the present invention.

[0016] Figure 3 It is a structural schematic diagram of the main body in the present invention.

[0017] Figure 4 It is a cross-sectional view of the main body of the present invention.

[0018] The accompanying drawings are marked as follows: 1. main body; 2. first splicing ring; 3. first fitting ring; 4. first outer shell; 5. fixing ring; 6. sealing pressure ring; 7. first internal thread; 8. second outer shell; 9. second splicing ring; 10. second fitting ring; 101. cylinder; 102. convex ring; 103. external thread; 104. second internal thread; 105. blocking ring; 106. sealing ring. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] As attached Figure 1-4The shown disassembly-free bellows joint nut includes a main body 1, and the two end heads of the main body 1 are respectively connected with a first splicing ring 2 and a second splicing ring 9, the end of the first splicing ring 2 is located on the outside of the main body 1 and is fixedly connected with a first fitting ring 3, the end of the second splicing ring 9 is located on the outside of the main body 1 and is fixedly connected with a second fitting ring 10, the two end portions of the main body 1 are located outside the first fitting ring 3 and the second fitting ring 10 and are respectively connected with a first outer shell 4 and a second outer shell 8, the inner walls of the end heads of the first outer shell 4 and the second outer shell 8 are both fixedly connected with a fixing ring 5, the inside of the fixing ring 5 is provided with a hole for the bellows joint to pass through, and the inner wall of the hole is provided with a sealing pressure ring 6.

[0021] As attached Figure 1-4 As shown, the main body 1 includes a cylinder 101 connected to the outside of the first splicing ring 2 and the second splicing ring 9, a convex ring 102 is arranged at the middle of the outer wall of the cylinder 101 between the first outer shell 4 and the second outer shell 8, and a blocking ring 105 is fixedly arranged at the inner wall of the cylinder 101 corresponding to the inner side of the end of the first splicing ring 2 and the second splicing ring 9. The outer walls of the two blocking rings 105 are bonded with sealing rings 106 by hot melt adhesive. The outer surfaces and inner surfaces of the first splicing ring 2 and the second splicing ring 9 are respectively provided with external threads and internal threads. The inner surfaces of the two ends of the cylinder 101 are fixed with a sealing ring 106. A second internal thread 104 is provided at the position of the external thread structure corresponding to the first splicing ring 2 and the second splicing ring 9 on the surface. The first splicing ring 2 and the second splicing ring 9 are connected to the cylinder 101 through threads. The outer surfaces of the two end portions of the cylinder 101 are located on both sides of the convex ring 102 and are provided with external threads 103. The inner surfaces of the first outer shell 4 and the second outer shell 8 are provided with a first internal thread 7 with an external thread structure matching the external thread 103, which facilitates the connection and disassembly between the first splicing ring 2, the second splicing ring 9, the first outer shell 4, the second outer shell 8 and the main body 1.

[0022] As attached Figure 1-2 As shown, there is a seamless welding structure between the fixing ring 5 and the inner walls of the ends of the first outer shell 4 and the second outer shell 8, which is convenient for the connection and fixation of the fixing ring 5 to the inner walls of the ends of the first outer shell 4 and the second outer shell 8. The sealing pressure ring 6 and the fixing ring 5 are fixed by hot melt adhesive, which is convenient for the installation of the sealing pressure ring 6.

[0023] As attached Figure 1-2 As shown, the sealing pressure ring 6 is a rubber material component with a conical cross-section. After the first outer shell 4 and the second outer shell 8 are connected outside the main body 1, the sealing pressure ring 6 is gradually used to squeeze the bellows joint passing through the inside, thereby improving the sealing performance after connection, and using the friction force of extrusion to improve the stability after assembly.

[0024] Working principle: The present invention designs a disassembly-free bellows joint nut, the specific structure of which is as shown in the attached manual. Figure 1-4 As shown, in the technical solution, the designed bellows joint nut adopts a split structure design. After the bellows joint passes through the interior of the main body 1, the two ends of the main body 1 are first connected to the first splicing ring 2 and the second splicing ring 9 respectively. After the first splicing ring 2 and the second splicing ring 9 are screwed in, the sealing ring 106 is squeezed to maintain the sealing performance after the connection. At this time, the first outer shell 4 and the second outer shell 8 are threadedly connected on the outside of the main body 1, and the fixing ring 5 is fixedly connected to the inner wall of the end of the first outer shell 4 and the second outer shell 8, and a sealing pressure ring 6 is set on the inner wall of the hole for the bellows joint to pass through. The sealing pressure ring 6 is a rubber material component with a conical cross-section, which is convenient for the first outer shell 4 and the second outer shell 8 to be connected to the main body 1. After the external connection, the bellows joint passing through the inside is gradually squeezed by the sealing pressure ring 6, so as to improve the sealing performance after the connection, and the friction force of the extrusion is used to improve the stability after assembly, and then the internal threads in the first splicing ring 2 and the second splicing ring 9 are used to form a stable assembly with the bellows joint, wherein the first splicing ring 2 and the second splicing ring 9 are easy to replace, and then it is convenient to prepare splicing ring structures with internal threaded hole structures of various sizes. At the same time, the sealing pressure ring 6 arranged inside the fixing ring 5 is also easy to disassemble, and then different thicknesses and inner hole sealing pressure ring 6 structures can be replaced according to actual needs, so that the designed bellows joint nut can be switched and used according to the actual size of the bellows joint, without the need for complete replacement, and can be adapted to bellows joints of various models and sizes for assembly and use.

[0025] Among them, in the drawings of the embodiments disclosed in the present invention, only the structures related to the embodiments disclosed in the present invention are involved, and other structures can refer to the general design. In the case of no conflict, the same embodiment and different embodiments of the present invention can be combined with each other; Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. The bellows joint nut that does not require disassembly is characterized by: The invention comprises a main body (1), wherein the two ends of the main body (1) are internally connected with a first splicing ring (2) and a second splicing ring (9), the end of the first splicing ring (2) is located outside the main body (1) and is fixedly connected with a first fitting ring (3), the end of the second splicing ring (9) is located outside the main body (1) and is fixedly connected with a second fitting ring (10), the two ends of the main body (1) are located outside the first fitting ring (3) and the second fitting ring (10) and are respectively connected with a first outer shell (4) and a second outer shell (8), the inner walls of the ends of the first outer shell (4) and the second outer shell (8) are both fixedly connected with a fixing ring (5), the fixing ring (5) is provided with a hole for the corrugated pipe joint to pass through, and the inner wall of the hole is provided with a sealing pressure ring (6).

2. The disassembly-free bellows joint nut according to claim 1, characterized in that: The main body (1) comprises a cylinder (101) connected to the outside of a first splicing ring (2) and a second splicing ring (9), and a convex ring (102) is provided at the middle of the outer wall of the cylinder (101) between the first outer shell (4) and the second outer shell (8).

3. The disassembly-free bellows joint nut according to claim 2, characterized in that: Blocking rings (105) are fixedly provided on the inner wall of the cylinder (101) at positions inside the ends of the first splicing ring (2) and the second splicing ring (9), and sealing rings (106) are bonded to the outer walls of the two blocking rings (105) by hot melt adhesive.

4. The disassembly-free bellows joint nut according to claim 2, characterized in that: The outer surfaces and inner surfaces of the first splicing ring (2) and the second splicing ring (9) are respectively provided with external threads and internal threads, and the inner surfaces of the two end portions of the cylinder (101) are provided with second internal threads (104) at positions corresponding to the external thread structures of the first splicing ring (2) and the second splicing ring (9), and the first splicing ring (2) and the second splicing ring (9) are connected to the cylinder (101) via threads.

5. The disassembly-free bellows joint nut according to claim 2, characterized in that: External threads (103) are provided on the outer surfaces of both ends of the cylinder (101) at positions on both sides of the convex ring (102), and first internal threads (7) of external thread structures matching the external threads (103) are provided on the inner surfaces of the first outer shell (4) and the second outer shell (8).

6. The disassembly-free corrugated pipe joint nut according to claim 1, characterized in that: The fixing ring (5) and the inner walls of the ends of the first outer shell (4) and the second outer shell (8) are seamlessly welded, and the sealing pressure ring (6) and the fixing ring (5) are fixed by hot-melt adhesive.

7. The disassembly-free corrugated pipe joint nut according to claim 1, characterized in that: The sealing pressure ring (6) is a rubber component with a conical cross-section.

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