A connection structure of a spiral bellows

Abstract

The application relates to a connecting structure of a spiral corrugated pipe and relates to the field of spiral corrugated pipe connection. In order to solve the problem that the sealing performance of the spiral corrugated pipe and the connecting structure is poor, and concrete is easily led into the pipe during construction, the application provides a connecting structure of a spiral corrugated pipe, which comprises a threaded connecting pipe and a water pipe connecting pipe. One end of the threaded connecting pipe is connected with one end of the water pipe connecting pipe. A tight gradual change section is arranged on the inner side wall of the threaded connecting pipe. The tight gradual change section comprises a gradual change ring and a gradual change thread section. The gradual change ring is arranged on the inner side wall of one end of the threaded connecting pipe close to the water pipe connecting pipe. The thickness of the gradual change ring increases from the threaded connecting pipe to the water pipe connecting pipe. The gradual change thread section is arranged on the side wall away from the threaded connecting pipe of the gradual change ring. The application has the effect of improving the sealing performance of the spiral corrugated pipe and the connecting structure.

Description

Technical Field

[0001] This application relates to the field of spiral bellows connections, and in particular to a connection structure for spiral bellows. Background Technology

[0002] A connecting structure is generally a standard component that connects adjacent threaded materials.

[0003] When using, first screw one end of the spiral corrugated pipe into one end of the connecting structure, and then screw one end of the other spiral corrugated pipe into the other connecting structure in the same way. Insert the same drain pipe into the end of the two connecting structures away from the spiral corrugated pipe. The drain pipe joint connects the two spiral corrugated pipes with internal spiral joints by glue.

[0004] However, since the spiral corrugated pipe and the connecting structure are connected by threads, meaning that the spiral corrugated pipe and the connecting structure must be compatible for the spiral corrugated pipe to be screwed smoothly, the sealing performance between the spiral corrugated pipe and the connecting structure is poor. This makes it easy for concrete to enter between the connecting structure and the spiral corrugated pipe during construction, so it needs to be improved. Summary of the Invention

[0005] To improve the sealing performance of the spiral bellows and the connecting structure, this application provides a connecting structure for the spiral bellows.

[0006] The connection structure of the spiral bellows provided in this application adopts the following technical solution:

[0007] A connection structure for a spiral corrugated pipe includes a threaded connecting pipe and a water pipe connecting pipe. One end of the threaded connecting pipe is connected to one end of the water pipe connecting pipe. A connecting thread section is provided inside the threaded connecting pipe. A tightening transition section is provided on the inner side wall of the threaded connecting pipe. The tightening transition section includes a transition ring and a transition thread section. The transition ring is provided on the inner side wall of the end of the threaded connecting pipe near the water pipe connecting pipe, and the thickness of the transition ring increases from the threaded connecting pipe toward the water pipe connecting pipe. The transition thread section is provided on the side wall of the transition ring away from the threaded connecting pipe and is connected to the connecting thread section.

[0008] By adopting the above technical solution, when using the connection structure, first screw one end of the spiral corrugated pipe into the threaded connection pipe. The spiral corrugated pipe is slowly screwed into the threaded connection pipe through the connecting thread section. When the spiral corrugated pipe continues to be screwed in until it is tightly against the thread section, use a wrench to continue rotating the connection structure, so that the spiral corrugated pipe continues to penetrate deeper into the threaded connection pipe until the outer wall of the end of the spiral corrugated pipe abuts against the gradient ring. The spiral corrugated pipe undergoes a slight deformation and is tightly against the gradient ring. At this time, the gap between the end of the threaded corrugated pipe and the inner wall of the threaded connection pipe is reduced, thereby improving the sealing performance between the spiral corrugated pipe and the threaded connection pipe. At this time, apply glue to the inner wall of the water pipe connection pipe and apply glue to the outer wall of the drain pipe. Insert both ends of the drain pipe into the water pipe connection pipes of the two adjacent connection structures respectively. After the glue fixes the drain pipe and the water pipe connection pipe, the next step can be performed.

[0009] Optionally, the outer sidewall of the threaded connecting pipe is provided with a plurality of reinforcing ribs, which are arranged around the threaded connecting pipe.

[0010] By adopting the above technical solution, reinforcing ribs are set on the outer sidewall of the threaded connecting pipe to increase the wall thickness of some areas of the threaded connecting pipe. At this time, the strength of the part with reinforcing ribs is improved, and the strength of the part with improved wall thickness is used to drive other areas with thinner wall thickness, thereby increasing the overall strength of the threaded connecting pipe.

[0011] Optionally, a reinforcing ring is provided at the end of the threaded connecting pipe away from the water pipe connecting pipe.

[0012] When using the connection structure, one end of the spiral bellows is first screwed into the threaded connecting pipe. The spiral bellows is slowly screwed into the threaded connecting pipe through the connecting thread section. At this time, the pipe opening of the threaded connecting pipe is prone to continuous friction and collision with the spiral bellows, which leads to excessive pressure at the pipe opening of the threaded connecting pipe. By adopting the above technical solution, the reinforcing ring at the pipe opening of the threaded connecting pipe increases the wall thickness at the pipe opening, increases its strength, distributes the pressure at the pipe opening, and reduces the wear of the pipe opening of the threaded connecting pipe.

[0013] Optionally, a protective ring is provided at one end of the threaded connecting pipe near the water pipe connecting pipe. The protective ring is located on the inner wall of the threaded connecting pipe and is situated on the side of the gradient ring near the water pipe connecting pipe.

[0014] By adopting the above technical solution, the spiral bellows is slowly screwed into the threaded connecting pipe through the connecting thread section. When the spiral bellows continues to screw in until it is tightly against the thread section, the connecting structure is rotated with a wrench to allow the spiral bellows to continue to penetrate deeper into the threaded connecting pipe. When the spiral bellows is screwed to the transition ring, it is continuously screwed in until the end of the spiral bellows abuts against the protective ring. The protective ring can undergo elastic deformation, which improves the sealing performance between the end of the spiral bellows and the threaded connecting pipe.

[0015] Optionally, a positioning plate is provided between two adjacent water pipe connecting pipes, and the positioning plate is installed on the drain pipe.

[0016] By adopting the above technical solution, glue is applied to the inner wall of the water pipe connecting pipe and the outer wall of the drain pipe. The two ends of the drain pipe are then inserted into the water pipe connecting pipes of the two adjacent connecting structures. At this time, the end of the drain pipe slowly moves into the water pipe connecting pipe. When the end of the water pipe connecting pipe contacts the positioning plate, the movement of the drain pipe is stopped. The positioning plate allows the operator to directly know the position of the drain pipe entering the water pipe connecting pipe and can quickly stop the insertion of the drain pipe. This reduces the possibility of the drain pipe colliding directly with the spiral corrugated pipe due to excessive insertion force when it is inserted into the water pipe connecting pipe, which would cause the spiral corrugated pipe to press on the threaded section. This reduces the occurrence of repeated insertion and withdrawal of the drain pipe from the water pipe connecting pipe.

[0017] Optionally, detection films are installed on both sides of the positioning plate, and the detection films are clamped between the water pipe connecting pipe and the drain pipe. A detection hole is opened at the end of the positioning plate away from the detection film.

[0018] By adopting the above technical solution, when the end of the water pipe connecting pipe contacts the plate, the movement of the drain pipe stops. At this time, the detection film is embedded between the drain pipe and the water pipe connecting pipe. At a specified interval, the positioning plate is hooked by the tension indicator and pulled upward. The reading of the tension indicator is observed. When the tension indicator shows a value above the specified value, it means that the detection film cannot move and the glue between the drain pipe and the water pipe connecting pipe has solidified, and subsequent installation work can be carried out. Through the cooperation of the detection film and the tension indicator, the solidification state of the glue can be quickly determined, which facilitates the subsequent construction.

[0019] Optionally, the positioning plate includes a plate body and a magnetic block. The plate body has a groove at one end away from the drain pipe. The magnetic block is inserted into the groove and is magnetically attracted to the drain pipe to connect the positioning plate to the drain pipe.

[0020] By adopting the above technical solution, when the end of the water pipe connecting pipe contacts the plate, the movement of the drain pipe stops. At this time, the detection chip is embedded between the drain pipe and the water pipe connecting pipe. Then, the magnetic block is removed from the plate groove and reused by using the removal protrusion. The setting of the magnetic block allows the positioning plate to be fixed to the drain pipe without glue, which improves the efficiency of the preliminary preparation work. The reuse of the magnetic block reduces the resources required for connection.

[0021] Optionally, the height of the magnetic block is lower than the height of the end wall of the plate away from the drain pipe, and a take-out protrusion is provided at the end of the magnetic block away from the drain pipe, the take-out protrusion being located on one side of the magnetic block.

[0022] By adopting the above technical solution, when the end of the water pipe connecting pipe contacts the plate, the movement of the drain pipe stops. At this time, the detection chip is embedded between the drain pipe and the water pipe connecting pipe. Then, the magnetic block is removed from the plate groove by using the removal protrusion and reused. The setting of the removal protrusion allows the operator to remove the magnetic block without the need for auxiliary tools. He can directly insert his fingers into the gap and hold the removal protrusion to lift the magnetic block out.

[0023] Optionally, the sidewall of the protrusion near the magnetic block is recessed inward.

[0024] By adopting the above technical solution, the raised recess provides a place for the finger, making it easier to remove the magnetic block.

[0025] In summary, this application includes at least one of the following beneficial technical effects:

[0026] 1. When using the connection structure, first screw one end of the spiral bellows into the threaded connection pipe. The spiral bellows is slowly screwed into the threaded connection pipe through the connecting thread section. When the spiral bellows continues to screw in until it is tightly against the thread section, use a wrench to continue rotating the connection structure, allowing the spiral bellows to continue to penetrate deeper into the threaded connection pipe until the outer wall of the spiral bellows end touches the transition ring. The spiral bellows undergoes a slight deformation and is tightly against the transition ring. At this time, the gap between the end of the threaded bellows and the inner wall of the threaded connection pipe is reduced, thereby improving the sealing between the spiral bellows and the threaded connection pipe. At this point, apply glue to the inner wall of the water pipe connection pipe and the outer wall of the drain pipe. Insert both ends of the drain pipe into the water pipe connection pipes of the two adjacent connection structures respectively. After the glue fixes the drain pipe and the water pipe connection pipe, the next step can be performed.

[0027] 2. Apply glue to the inner wall of the water pipe connector and the outer wall of the drain pipe. Insert both ends of the drain pipe into the water pipe connectors of the two adjacent connectors. Slowly move the end of the drain pipe into the water pipe connector. When the end of the water pipe connector contacts the positioning plate, stop moving the drain pipe. The positioning plate allows the operator to directly know the position of the drain pipe in the water pipe connector and quickly stop the insertion. This reduces the risk of the drain pipe colliding with the spiral corrugated pipe due to excessive insertion force, which would cause the spiral corrugated pipe to press against the threaded section. This reduces the occurrence of repeated insertion and withdrawal of the drain pipe from the water pipe connector.

[0028] 3. When the end of the water pipe connector contacts the plate, stop the movement of the drain pipe. At this time, the detection film is embedded between the drain pipe and the water pipe connector. At a specified interval, use the tension indicator to hook the positioning plate and pull it upward. Observe the reading of the tension indicator. When the tension indicator shows a value above the specified value, it means that the detection film can no longer move and the glue between the drain pipe and the water pipe connector has solidified. The subsequent installation work can then be carried out. By using the detection film and the tension indicator together, the solidification state of the glue can be quickly determined, which facilitates the later construction. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the connection structure of a spiral bellows in an embodiment of this application.

[0030] Figure 2 This is a cross-sectional schematic diagram in the embodiments of this application used to illustrate the positional relationship between the tightening transition section and the connecting threaded pipe.

[0031] Figure 3 yes Figure 2 An enlarged diagram of A in the diagram.

[0032] Figure 4 yes Figure 2 Enlarged diagram of B in the diagram.

[0033] Explanation of reference numerals in the attached drawings: 1. Threaded connecting pipe; 11. Connecting thread section; 12. Tightening transition section; 121. Transition ring; 13. Reinforcing rib; 14. Reinforcing ring; 15. Protective ring; 122. Transition thread section; 2. Water pipe connecting pipe; 3. Positioning plate; 31. Plate body; 311. Inspection hole; 312. Plate groove; 32. Magnetic block; 321. Removal protrusion; 4. Inspection film; 5. Spiral corrugated pipe; 6. Drainage pipe. Detailed Implementation

[0034] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0035] This application discloses a connection structure for a spiral bellows. (Refer to...) Figure 1 and Figure 2 The connection structure of the spiral corrugated pipe includes a threaded connecting pipe 1 and a water pipe connecting pipe 2. One end of the threaded connecting pipe 1 is connected to one end of the water pipe connecting pipe 2 and they are connected in a continuous manner. At this time, the diameter of the threaded connecting pipe 1 is larger than the diameter of the water pipe connecting pipe 2. The inner wall of the threaded connecting pipe 1 is provided with a connecting thread section 11, which corresponds to the spiral corrugated pipe 5.

[0036] Reference Figure 1A reinforcing ring 14 is provided at the end of the threaded connecting pipe 1 away from the water pipe connecting pipe 2. The reinforcing ring 14 is integrally formed on the threaded connecting pipe 1, and the inner wall of the reinforcing ring 14 is flush with the inner wall of the threaded connecting pipe 1.

[0037] Reference Figure 1 A number of reinforcing ribs 13 are provided on the outer side wall of the threaded connecting pipe 1. The reinforcing ribs 13 are integrally formed on the threaded connecting pipe 1. The reinforcing ribs 13 are evenly arranged on the outer side wall of the threaded connecting pipe 1, and the length direction of each reinforcing rib 13 is consistent with the axial direction of the threaded connecting pipe 1.

[0038] Reference Figure 2 The inner wall of the threaded connecting pipe 1 is provided with a tightening transition section 12. The tightening transition section 12 is located at the end of the threaded connecting pipe 1 near the water pipe connecting pipe 2. The tightening transition section 12 includes a transition ring 121 and a transition thread section 122. The end of the transition ring 121 is flush with the end of the threaded connecting pipe 1. The thickness of the transition ring 121 increases from the threaded connecting pipe 1 toward the water pipe connecting pipe 2. The end of the transition ring 121 away from the water pipe connecting pipe 2 is connected to the pipe wall of the threaded connecting pipe 1. That is, the cross section of the transition ring 121 in the axial direction is triangular. The transition thread section 122 is provided on the side wall of the transition ring 121 away from the threaded connecting pipe 1 and is connected to the connecting thread section 11.

[0039] When using the connection structure, first screw one end of the spiral bellows 5 into the threaded connecting pipe 1. The spiral bellows 5 is slowly screwed into the threaded connecting pipe 1 through the connecting thread section 11. When the spiral bellows 5 continues to be screwed in until it is pressed against the thread section, use a wrench to continue to rotate the connection structure so that the spiral bellows 5 continues to penetrate deeper into the threaded connecting pipe 1 until the outer wall at the end of the spiral bellows 5 touches the gradient ring 121, thereby improving the sealing between the spiral bellows 5 and the threaded connecting pipe 1.

[0040] Reference Figure 2 and Figure 3 A protective ring 15 is provided at one end of the threaded connecting pipe 1 near the water pipe connecting pipe 2. The protective ring 15 is made of rubber and is placed directly inside the threaded connecting pipe 1. When the spiral bellows 5 is screwed into the threaded connecting pipe 1, it continues to screw towards the water pipe connecting pipe 2. When the spiral bellows 5 is screwed to the transition ring 121, it continues to screw until the end of the spiral bellows 5 abuts against the protective ring 15. The protective ring 15 can undergo elastic deformation, which improves the sealing performance between the end of the spiral bellows 5 and the threaded connecting pipe 1.

[0041] Reference Figure 2 and Figure 3When the spiral corrugated pipe 5 is connected to the connecting structure, the two connecting structures are located away from the end of the spiral corrugated pipe 5, that is, the same drain pipe 6 is inserted into the water pipe connecting pipe 2. The drain pipe 6 is made of PVC material, and the joint of the drain pipe 6 connects the two spiral corrugated pipes 5 with the connecting structure through glue.

[0042] Reference Figure 2 and Figure 4 At this time, a positioning plate 3 is provided in the middle of the drain pipe 6. The positioning plate 3 includes a plate body 31 and a magnetic block 32. One side of the plate body 31 is attached to the outer edge sidewall of the drain pipe 6. A plate groove 312 is opened at the end of the plate body 31 away from the drain pipe 6. The magnetic block 32 is placed in the plate groove 312. A metal sheet is embedded in the part where the drain pipe 6 is attached to the plate body 31. The magnetic block 32 and the metal sheet are magnetically attracted, so that the plate body 31 is magnetically connected to the drain pipe 6.

[0043] Reference Figure 4 The plate 31 is equipped with detection plates 4 on both sides. One end of the detection plate 4 is fixed to the side wall of the plate 31 with a thumbtack. The other end of the detection plate 4 is embedded between the drain pipe 6 and the water pipe connecting pipe 2 when the water pipe connecting pipe 2 is sleeved on the drain pipe 6. The drain pipe 6 and the water pipe connecting pipe 2 are fixed with glue. After the installation is completed, the plate is pulled at specified intervals. The movement of the detection plate 4 is used to detect whether the drain pipe 6 and the water pipe connecting pipe 2 are firmly glued.

[0044] Reference Figure 4 A detection hole 311 is provided on the side of the plate 31 away from the drain pipe 6. The end wall of the magnetic block 32 away from the drain pipe 6 is lower than the height of the detection hole 311 in the plate groove 312. At the same time, a take-out protrusion 321 is integrally formed on the end of the magnetic block 32 away from the drain pipe 6. There are two take-out protrusions 321, which are located on both sides of the detection hole 311. The side wall of the take-out protrusion 321 near the magnetic block 32 is recessed inward to facilitate the removal of the magnetic block 32 from the plate groove 312 later.

[0045] The implementation principle of the connection structure of the spiral bellows in this application embodiment is as follows: When using the connection structure, first screw one end of the spiral bellows 5 into the threaded connection pipe 1. The spiral bellows 5 is slowly screwed into the threaded connection pipe 1 through the connecting thread section 11. When the spiral bellows 5 continues to be screwed in until it is pressed against the thread section, the connection structure is rotated with a wrench to make the spiral bellows 5 continue to penetrate deeper into the threaded connection pipe 1. When the spiral bellows 5 is screwed to the transition ring 121, it is continuously screwed in until the end of the spiral bellows 5 abuts against the protective ring 15. The protective ring 15 can undergo elastic deformation, which improves the sealing performance between the end of the spiral bellows 5 and the threaded connection pipe 1.

[0046] At this point, apply glue to the inner wall of the water pipe connecting pipe 2 and the outer wall of the drain pipe 6. Insert both ends of the drain pipe 6 into the water pipe connecting pipe 2 of the two adjacent connecting structures. At this point, the end of the drain pipe 6 slowly moves into the water pipe connecting pipe 2. When the end of the water pipe connecting pipe 2 contacts the plate 31, stop the movement of the drain pipe 6. At this point, the detection soft film 4 is embedded between the drain pipe 6 and the water pipe connecting pipe 2. At this point, use the removal protrusion 321 to remove the magnetic block 32 from the plate groove 312 and reuse it. At a specified interval, use the tension indicator inserted into the detection hole 311 to hook the plate 31 and pull it upward. Observe the index of the tension indicator. When the tension indicator shows a value above the specified value, it means that the detection soft film 4 cannot move and the glue between the drain pipe 6 and the water pipe connecting pipe 2 has solidified. The subsequent installation work can then be carried out.

[0047] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A connection structure for a spiral corrugated pipe, comprising a threaded connecting pipe (1) and a water pipe connecting pipe (2), wherein one end of the threaded connecting pipe (1) is connected to one end of the water pipe connecting pipe (2), and a connecting thread section (11) is provided inside the threaded connecting pipe (1), characterized in that: The inner wall of the threaded connecting pipe (1) is provided with a tightening transition section (12), which includes a transition ring (121) and a transition thread section (122). The transition ring (121) is provided on the inner wall of the end of the threaded connecting pipe (1) near the water pipe connecting pipe (2), and the thickness of the transition ring (121) increases from the threaded connecting pipe (1) toward the water pipe connecting pipe (2). The transition thread section (122) is provided on the side wall of the transition ring (121) away from the threaded connecting pipe (1) and is connected to the connecting thread section (11). Two adjacent water pipes A positioning plate (3) is provided between the connecting pipes (2). The positioning plate (3) is installed on the drain pipe (6). The drain pipe (6) and the water pipe connecting pipe (2) are fixed together with glue. Detection soft films (4) are installed on both sides of the positioning plate (3). The detection soft films (4) are clamped between the water pipe connecting pipe (2) and the drain pipe (6). A detection hole (311) is opened at the end of the positioning plate (3) away from the detection soft film. Pull the positioning plate (3) to observe the movement state of the detection soft film (4) to determine whether the drain pipe (6) and the water pipe connecting pipe (2) are securely connected.

2. The connection structure of a spiral corrugated pipe according to claim 1, characterized in that: The outer sidewall of the threaded connecting pipe (1) is provided with a number of reinforcing ribs (13), and the number of reinforcing ribs (13) are arranged around the threaded connecting pipe (1).

3. The connection structure of a spiral corrugated pipe according to claim 1, characterized in that: A reinforcing ring (14) is provided at the end of the threaded connecting pipe (1) away from the water pipe connecting pipe (2).

4. The connection structure of a spiral corrugated pipe according to claim 1, characterized in that: A protective ring (15) is provided at one end of the threaded connecting pipe (1) near the water pipe connecting pipe (2). The protective ring (15) is provided on the inner wall of the threaded connecting pipe (1) and is located on the side of the gradient ring (121) near the water pipe connecting pipe (2).

5. The connection structure of a spiral corrugated pipe according to claim 1, characterized in that: The positioning plate (3) includes a plate body (31) and a magnetic block (32). The plate body (31) has a groove (312) at one end away from the drain pipe (6). The magnetic block (32) is inserted into the groove (312). The magnetic block (32) is magnetically attracted to the drain pipe (6) to connect the positioning plate (3) to the drain pipe (6).

6. The connection structure of a spiral bellows according to claim 5, characterized in that: The height of the magnetic block (32) is lower than the end wall height of the plate (31) away from the drain pipe (6). The end of the magnetic block (32) away from the drain pipe (6) is provided with a take-out protrusion (321), which is located on one side of the magnetic block (32).

7. The connection structure of a spiral corrugated pipe according to claim 6, characterized in that: The side wall of the extraction protrusion (321) near the magnetic block (32) is recessed inward.

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