A joint for reconstruction of sewer pipes in an old residential district

Abstract

The application relates to a joint for old community sewer pipeline reconstruction, and belongs to the technical field of pipeline reconstruction. The joint comprises a main pipe, the pipe diameter of the main pipe is smaller than that of a pipe in a board layer, and the main pipe penetrates through the pipe in the board layer; two connecting pipes are arranged, the two connecting pipes are arranged at two ends of the main pipe respectively, the connecting pipes are used for being sleeved on new replaced sewer pipes, the connecting pipes are fixed and sealed with the new replaced sewer pipes; and a reducing pipe is fixed between the connecting pipes and the main pipe. The joint has the effect of reducing safety hazards.

Description

Technical Field

[0001] This application relates to the technical field of pipeline renovation, and in particular to a connector for renovating drainage pipes in old residential areas. Background Technology

[0002] Currently, the whole society is comprehensively promoting the renovation of old urban communities, among which the renovation of drainage pipes is one of the key projects. In the past, the drainage pipes of houses were all made of cast iron. Domestic sewage caused a large amount of corrosive gases such as carbon monoxide to be generated inside the cast iron pipes. The corrosive gases would erode the inner wall of the drainage pipes, and at the same time, silicates would form on the outer wall of the drainage pipes, thus causing the drainage pipes to leak.

[0003] Currently, building drainage pipes generally run through the floor slab. Based on their position relative to the floor slab, the original drainage pipes are divided into pipes above the floor slab, pipes inside the floor slab, and pipes below the floor slab. When replacing them, the floor tiles on the surface need to be removed to open the floor and expose the pipes inside the floor slab. Cast iron drainage pipes are inherently difficult to disassemble due to their material. Generally, an electric saw is used to cut open the pipes above the floor slab, the pipes inside the floor slab, and the pipes below the floor slab. Then, the cement layer around the pipes inside the floor slab is broken open, the pipes inside the floor slab are pulled out, and finally, the new drainage pipes are installed.

[0004] Replacing drain pipes requires breaking through the cement layer to expose the pipes. However, the process of breaking through the cement layer often results in excessive damage, causing too many fracture surfaces in the cement layer around the pipes, which increases the risk of accidents. Summary of the Invention

[0005] To reduce safety hazards, this application provides a connector for the renovation of drainage pipes in old residential areas.

[0006] The technical solution for a connector used in the renovation of drainage pipes in old residential areas provided in this application is as follows: A connector for renovating drainage pipes in old residential communities includes: The main pipe has a smaller diameter than the pipes inside the slab layer, and it passes through the pipes inside the slab layer. There are two connecting pipes, which are respectively located at both ends of the main pipe. The connecting pipes are used to fit onto the new drain pipe and are fixed and sealed to the new drain pipe. The reducing pipe is fixed between the connecting pipe and the main pipe.

[0007] Using the above technical solution, after cutting open the pipes above, inside, and below the floor slab, the pipes above and below the floor slab are replaced with new drainage pipes, while the pipes inside the floor slab remain within the floor slab. The main pipe is then passed through the pipes inside the floor slab, and connected to the new drainage pipes via connecting pipes. This method avoids damaging the cement layer around the pipes, thus reducing safety hazards.

[0008] Optionally, the connecting pipe has a cavity inside, and a limit screw is slidably connected to the connecting pipe. Multiple limit screws are spaced around the central axis of the connecting pipe. One end of the limit screw extends into the cavity, and the other end of the limit screw extends into the connecting pipe and is used to press against the outer wall of the newly replaced drain pipe. A limit sleeve is threaded to the limit screw, and the limit sleeve is rotatably connected to the connecting pipe. The connecting pipe is equipped with a drive assembly for rotating the limiting screw sleeve; The connecting pipe is equipped with a sealing component for sealing the inner wall of the connecting pipe with the outer wall of the newly replaced drain pipe.

[0009] Using the above technical solution, the rotation of the limiting screw sleeve causes the limiting screw to slide from the cavity toward the newly replaced drain pipe until the limiting screw presses against the newly replaced drain pipe, thereby fixing the connecting pipe and the newly replaced drain pipe together. By adjusting the displacement of the limiting screw, new drain pipes of different diameters can be clamped, improving the applicability of the joint.

[0010] Optionally, the outer wall of the connecting pipe is provided with a receiving groove in annular shape, and the receiving groove is in communication with the cavity; The drive assembly includes a drive gear ring and a transmission roller. The drive gear ring is rotatably connected to the receiving groove of the connecting pipe. The number of transmission rollers is the same as the number of limiting screw sleeves and they correspond one-to-one. The transmission rollers are rotatably connected to the cavity of the connecting pipe. A transmission gear that meshes with the drive gear ring is fixed on the transmission roller. A driving bevel gear is also fixed on the transmission roller. A driven bevel gear that meshes with the driving bevel gear is fixed on the limiting screw sleeve.

[0011] Using the above technical solution, the drive gear ring rotates, causing the transmission gear to rotate, which in turn causes the transmission roller to rotate. The transmission roller, through the driving bevel gear and the driven bevel gear, causes the limit screw sleeve to rotate. Thus, by rotating the drive gear ring, all the limit screw sleeves rotate synchronously, achieving the effect of controlling the displacement of all limit screws to be the same.

[0012] Optionally, the sealing assembly includes a sealing seat, which is slidably connected inside the connecting pipe, and the sealing seat has an inclined surface that is circumferentially inclined toward the central axis of the sealing seat on the side facing the newly replaced drain pipe. The connecting pipe is equipped with a movable component for driving the sealing seat to slide inside the connecting pipe.

[0013] By adopting the above technical solution, the position of the sealing seat is moved inside the connecting pipe so that the inclined surface of the sealing seat abuts against the newly replaced drain pipe, thereby sealing the maintenance between the connecting pipe and the newly replaced drain pipe. The inclined surface setting allows the sealing seat to be adapted to new drain pipes of different diameters.

[0014] Optionally, the inner wall of the connecting pipe is provided with clearance grooves, the number of clearance grooves is the same as the number of transmission rollers and corresponds one-to-one, and the moving component is set in the clearance grooves; The moving component includes a translation plate and a translation screw. The translation plate is slidably adapted to the clearance groove. One end of the translation plate is fixed to the outer wall of the sealing seat. The translation screw is rotatably connected in the clearance groove of the connecting pipe. One end of the translation screw is fixed to the transmission roller. The translation screw passes through the translation plate and the two are threadedly connected.

[0015] Using the above technical solution, the transmission roller rotates synchronously with the translation screw, which in turn causes the translation screw to slide within the clearance groove, thereby making the sealing seat abut against the newly replaced drain pipe. This achieves the effect of the rotation drive gear ring causing the limit screw and the sealing seat to move synchronously.

[0016] Optionally, the sealing seat is provided with a compensation groove in an annular shape, which penetrates the inclined surface of the sealing seat. The sealing assembly also includes a compensation block. The side of the compensation block facing the newly replaced drain pipe has a pressing surface with the same inclination as the inclined surface. The pressing surface of the compensation block abuts against the newly replaced drain pipe. The compensation block and the compensation groove are slidably adapted. A telescopic spring is provided in the compensation groove. One end of the telescopic spring is fixed to the compensation block, and the other end of the telescopic spring is fixed to the sealing seat.

[0017] Using the above technical solution, the compensation block can slide in the compensation groove, thereby reserving displacement for the sealing seat and reducing the occurrence of the limit screw not pressing against the new water pipe when the sealing assembly seals the gap between the connecting pipe and the new water pipe.

[0018] Optionally, the outer wall of the drive gear ring is provided with a paving groove.

[0019] By adopting the above technical solution, the drive gear ring can be easily rotated by the operator through the actuation groove, thus improving the ease of use.

[0020] Optionally, the inner wall of the connecting pipe is provided with a through hole communicating with the cavity. The through hole is used for the limit screw to pass through. A limit block is fixed in the connecting pipe within the through hole. The outer wall of the limit screw is provided with a limit groove that is slidably adapted to the limit block.

[0021] Using the above technical solution, during the movement of the limit screw, the limit block slides in the limit groove, thereby preventing the limit screw from rotating with the limit sleeve, thus achieving the effect of guiding and limiting the limit screw.

[0022] Optionally, a sealing layer is provided between the inner wall of the connecting pipe and the outer wall of the newly replaced drain pipe.

[0023] By adopting the above technical solution, the sealing effect between the connecting pipe and the newly replaced drain pipe is enhanced through the sealing layer.

[0024] Optionally, a sealing ring is provided inside the pipe within the plate layer, a sealing gasket is fixed to the inner wall of the sealing ring, and an adhesive layer is fixed to the outer wall of the sealing ring.

[0025] By adopting the above technical solution, the pipes inside the slab are sealed to the main pipe, thereby separating the upper and lower floors of the floor slab.

[0026] In summary, this application includes at least one of the following beneficial technical effects: 1. The pipes inside the slab are retained within the floor slab. The main pipe passes through the pipes inside the slab, and then the main pipe is connected to the new drainage pipe through the connecting pipe. Finally, the sealing ring and sealing gasket are fixed between the pipes inside the slab and the main pipe. This completes the renovation of the drainage pipes without damaging the cement layer around the drainage pipes, thereby reducing safety hazards.

[0027] 2. Adjusting the displacement of the limit screw, along with the sealing assembly, allows the connecting pipe to be connected to new drainage pipes of different diameters, improving the applicability of the joint. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of a connector for the renovation of drainage pipes in an old residential area, according to an embodiment of this application. Figure 2 This is a partial cross-sectional view in an embodiment of this application, illustrating the sealing method between the main pipe and the pipes within the slab. Figure 3 This is a partial sectional view in the embodiments of this application, illustrating the fixing and sealing method of the connecting pipe and the newly replaced drain pipe; Figure 4 yes Figure 3 A magnified view of part A in the middle; Figure 5 yes Figure 3 A magnified view of part B in the diagram.

[0029] In the diagram, 1. Floor slab; 11. Pipeline within the slab; 2. Main pipe; 3. Connecting pipe; 31. Cavity; 32. Limiting screw; 321. Limiting sleeve; 3211. Driven bevel gear; 322. Limiting groove; 323. Positioning plate; 33. Receiving groove; 34. Clearance groove; 35. Through hole; 36. Limiting block; 4. Reducing pipe; 41. Fixing ring; 5. Drive assembly; 51. Drive gear ring; 511. Actuating groove; 52. 521. Drive roller; 522. Drive gear; 523. Drive bevel gear; 6. Sealing assembly; 61. Sealing seat; 611. Inclined surface; 612. Compensation groove; 62. Compensation block; 621. Extrusion surface; 622. Telescopic spring; 7. Moving assembly; 71. Translation plate; 72. Translation screw; 8. Sealing layer; 9. Sealing ring; 91. Sealing gasket; 92. Adhesive layer; 10. Newly replaced drain pipe; 101. Positioning groove. Detailed Implementation

[0030] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0031] This application discloses a connector for the renovation of drainage pipes in old residential areas.

[0032] refer to Figure 1 and Figure 2 A connector for the renovation of drainage pipes in old residential areas includes a main pipe 2, the diameter of which is smaller than that of the pipe 11 inside the slab, the main pipe 2 penetrates the pipe 11 inside the slab, and both ends of the main pipe 2 are fixed with reducing pipes 4, which are funnel-shaped. The end of the reducing pipe 4 away from the main pipe 2 is fixed with a connecting pipe 3, which is sleeved on the newly replaced drainage pipe 10.

[0033] The original drainage pipes were cut into three parts: the pipe above the floor slab, the pipe inside the floor slab 11, and the pipe below the floor slab. The pipes above and below the floor slab were replaced with new drainage pipes 10. The pipe inside the floor slab 11 was kept inside the floor slab 1. Then, the main pipe 2 was passed through the pipe inside the floor slab 11. The connecting pipe 3 was then fixed to the main pipe 2 through the reducing pipe 4. Finally, the connecting pipe 3 was fixed and sealed to the new drainage pipe 10.

[0034] refer to Figure 2 A sealing ring 9 is fitted on the main tube 2. A sealing gasket 91 is fixed on the inner wall of the sealing ring 9. The sealing gasket 91 is pressed against one side of the sealing ring 9 and the main tube 2. An adhesive layer 92 is fixed on the outer wall of the sealing ring 9. In this embodiment, the adhesive layer 92 is made of sealant.

[0035] The sealing ring 9 and sealing gasket 91 are put on the main tube 2, and then the main tube 2 is passed through the inner pipe 11 of the plate layer. At the same time, the sealing ring 9 and sealing gasket 91 are placed in the inner pipe 11 of the plate layer. Then, sealant is applied between the inner pipe 11 of the plate layer and the sealing ring 9, thereby fixing the main tube 2 in the inner pipe 11 of the plate layer.

[0036] refer to Figure 3 A fixing ring 41 is fixed at the end of the reducing pipe 4 away from the connecting pipe 3. Both the reducing pipe 4 and the fixing ring 41 are sleeved on the main pipe 2. The fixing ring 41 is fixed to the main pipe 2 by bolts.

[0037] After fixing the main pipe 2 in the pipe 11 inside the slab, the workers put the reducer 4 and the fixing ring 41 on the end of the main pipe 2 that extends out of the pipe 11 inside the slab. Then, the fixing ring 41 is fixed to the main pipe 2 with bolts, thereby fixing the reducer 4 and the connecting pipe 3 on the main pipe 2. Then, the new drain pipe 10 is inserted into the connecting pipe 3.

[0038] refer to Figure 3 The outer wall of the connecting pipe 3 is provided with a storage groove 33, and the inside of the connecting pipe 3 is provided with a cavity 31, and the storage groove 33 is connected to the cavity 31.

[0039] refer to Figure 3 and Figure 4 The connecting pipe 3 is provided with a drive assembly 5, which includes a drive gear ring 51. There is one drive gear ring 51. The drive gear ring 51 is embedded in the storage groove 33. The drive gear ring 51 is rotatably connected to the inner wall of the connecting pipe 3 at the storage groove 33. The outer wall of the drive gear ring 51 is provided with multiple actuating grooves 511 around its own central axis.

[0040] refer to Figure 4 The drive assembly 5 also includes a drive roller 52. Multiple drive rollers 52 are evenly spaced around the central axis of the connecting pipe 3. In this embodiment, three drive rollers 52 are provided. The drive rollers 52 are disposed in the cavity 31. The drive rollers 52 are rotatably connected to the inner wall of the connecting pipe 3 at the cavity 31. A drive gear 521 that meshes with the drive gear ring 51 is fixed on the drive roller 52. An active bevel gear 522 is also fixed on the drive roller 52.

[0041] refer to Figure 4 The inner wall of the connecting pipe 3 is provided with a through hole 35 communicating with the cavity 31. The number of through holes 35 is the same as the number of transmission rollers 52 and they correspond one-to-one. A limit screw 32 is provided in the through hole 35. A limit block 36 is fixed in the connecting pipe 3 inside the through hole 35. A limit groove 322 is provided on the outer wall of the limit screw 32 to slide and adapt to the limit block 36.

[0042] refer to Figure 4 One end of the limiting screw 32 is threadedly connected to the limiting sleeve 321 in the cavity 31. The limiting sleeve 321 is rotatably connected to the inner wall of the connecting pipe 3 in the cavity 31. The limiting sleeve 321 is fixed with the driven bevel gear 3211 that meshes with the driving bevel gear 522.

[0043] refer to Figure 4 A positioning plate 323 is fixed at one end of the limit screw 32 away from the limit sleeve 321, and a positioning groove 101 that is compatible with the arc plate is opened on the outer wall of the newly replaced drain pipe 10.

[0044] The operator rotates the drive gear ring 51 through the actuation groove 511. The rotation of the drive gear ring 51 drives the transmission gear 521 to rotate, which in turn drives the transmission roller 52 to rotate. The rotation of the transmission roller 52 drives the drive bevel gear 522 to rotate, which in turn drives the driven bevel gear 3211 to rotate. The driven bevel gear 3211 drives the limit screw sleeve 321 to rotate, which in turn drives the limit screw 32 to slide towards the newly replaced drain pipe 10 until the limit screw 32 inserts the positioning plate 323 into the positioning groove 101.

[0045] During the sliding process of the limiting screw 32 in the through hole 35, the limiting block 36 slides in the limiting groove 322, so that the limiting block 36 prevents the limiting screw 32 from rotating with the limiting sleeve 321.

[0046] refer to Figure 5 A sealing assembly 6 is provided inside the connecting pipe 3. The sealing assembly 6 includes a sealing seat 61 and a compensation block 62. The outer wall of the sealing seat 61 is in contact with the inner wall of the connecting pipe 3. The sealing seat 61 has an inclined surface 611 that is inclined towards the central axis of the sealing seat 61 on the side facing the newly replaced drain pipe 10. The sealing seat 61 has a compensation groove 612 that is circumferentially opened at the inclined surface 611. The compensation block 62 is slidably adapted to the compensation groove 612. A telescopic spring 622 is provided inside the compensation groove 612. Multiple telescopic springs 622 are evenly spaced around the central axis of the sealing seat 61. One end of the telescopic spring 622 is fixed to the compensation block 62, and the other end of the telescopic spring 622 is fixed to the sealing seat 61. The compensation block 62 has a pressing surface 621 with the same inclination as the inclined surface 611 on the side facing the newly replaced drain pipe 10. The pressing surface 621 of the compensation block 62 abuts against the newly replaced drain pipe 10.

[0047] refer to Figure 3 The inner wall of the connecting pipe 3 is provided with a clearance groove 34. The number of clearance grooves 34 is the same as the number of transmission rollers 52 and they correspond one-to-one. A moving component 7 is provided in the clearance groove 34.

[0048] refer to Figure 3 and Figure 5 The moving component 7 includes a translation plate 71 and a translation screw 72. The translation plate 71 is slidably adapted to the clearance groove 34. One end of the translation plate 71 is fixed to the outer wall of the sealing seat 61. The translation screw 72 is rotatably connected in the clearance groove 34 of the connecting pipe 3. One end of the translation screw 72 is fixed to the transmission roller 52. The translation screw 72 passes through the translation plate 71 and the two are threadedly connected.

[0049] During the rotation of the transmission roller 52, the translation screw 72 is driven to rotate. The translation screw 72 drives the translation plate 71 to slide in the clearance groove 34, thereby the translation plate 71 drives the sealing seat 61 to approach the newly replaced drain pipe 10 until the newly replaced drain pipe 10 presses against the compensation block 62.

[0050] When the newly replaced drain pipe 10 comes into contact with the compensation block 62, while the transmission roller 52 is still rotating, the newly replaced drain pipe 10 continues to squeeze the compensation block 62, thereby causing the compensation block 62 to retract into the compensation groove 612. At this time, the telescopic spring 622 is in a squeezed state.

[0051] The implementation principle of a connector for the renovation of drainage pipes in an old residential area according to an embodiment of this application is as follows: The original drainage pipe is cut into three parts: a pipe above the floor slab, a pipe 11 inside the floor slab, and a pipe below the floor slab. The pipe 11 inside the floor slab is retained within the floor slab. Then, the main pipe 2 passes through the pipe 11 inside the floor slab. The floor slab 1 is then separated into upper and lower sections by a sealing ring 9. A connecting pipe 3 is then fixed to the main pipe 2 by a reducing pipe 4. Finally, a positioning plate 323 is inserted into a positioning groove 101 to fix the connecting pipe 3 to the newly replaced drainage pipe 10. At the same time, a sealing component 6 seals the gap between the connecting pipe 3 and the newly replaced drainage pipe 10. Through the above method, the safety hazards are reduced.

[0052] The embodiments described in this specific implementation are 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 connector for renovating drainage pipes in old residential communities, characterized in that, include: The main pipe (2) has a diameter smaller than that of the pipe (11) inside the slab, and the main pipe (2) passes through the pipe (11) inside the slab. There are two connecting pipes (3), which are respectively set at both ends of the main pipe (2). The connecting pipes (3) are used to be fitted onto the new drain pipe (10). The connecting pipes (3) are fixed and sealed to the new drain pipe (10). A reducing pipe (4) is fixed between the connecting pipe (3) and the main pipe (2); The connecting pipe (3) has a cavity (31) inside its body. A limiting screw (32) is slidably connected to the connecting pipe (3). Multiple limiting screws (32) are spaced around the central axis of the connecting pipe (3). One end of the limiting screw (32) extends into the cavity (31), and the other end of the limiting screw (32) extends into the connecting pipe (3) and is used to press against the outer wall of the newly replaced drain pipe (10). A limiting sleeve (321) is threaded onto the limiting screw (32), and the limiting sleeve (321) is rotatably connected to the connecting pipe (3). The connecting pipe (3) is provided with a drive assembly (5) for driving the limiting screw sleeve (321) to rotate; The connecting pipe (3) is provided with a sealing component (6) for sealing the inner wall of the connecting pipe (3) with the outer wall of the newly replaced drain pipe (10); The outer wall of the connecting pipe (3) is provided with a storage groove (33) in an annular shape, and the storage groove (33) is connected to the cavity (31); The drive assembly (5) includes a drive gear ring (51) and a transmission roller (52). The drive gear ring (51) is rotatably connected to the receiving groove (33) of the connecting pipe (3). The number of transmission rollers (52) is the same as the number of limiting screw sleeves (321) and they correspond one-to-one. The transmission rollers (52) are rotatably connected to the cavity (31) of the connecting pipe (3). A transmission gear (521) that meshes with the drive gear ring (51) is fixed on the transmission roller (52). An active bevel gear (522) is also fixed on the transmission roller (52). A driven bevel gear (3211) that meshes with the active bevel gear (522) is fixed on the limiting screw sleeve (321). The sealing assembly (6) includes a sealing seat (61), which is slidably connected in the connecting pipe (3). The sealing seat (61) has an inclined surface (611) that is inclined toward the central axis of the sealing seat (61) on the side facing the newly replaced drain pipe (10). The connecting pipe (3) is provided with a moving component (7) for driving the sealing seat (61) to slide inside the connecting pipe (3); The inner wall of the connecting pipe (3) is provided with a relief groove (34). The number of relief grooves (34) is the same as the number of transmission rollers (52) and they correspond one-to-one. The moving component (7) is set in the relief groove (34). The moving component (7) includes a translation plate (71) and a translation screw (72). The translation plate (71) is slidably adapted to the clearance groove (34). One end of the translation plate (71) is fixed to the outer wall of the sealing seat (61). The translation screw (72) is rotatably connected in the clearance groove (34) of the connecting pipe (3). One end of the translation screw (72) is fixed to the transmission roller (52). The translation screw (72) passes through the translation plate (71) and the two are threadedly connected.

2. A connector for renovating drainage pipes in old residential areas according to claim 1, characterized in that: The sealing seat (61) is provided with a compensation groove (612) in an annular shape. The compensation groove (612) penetrates the inclined surface (611) of the sealing seat (61). The sealing assembly (6) also includes a compensation block (62). The compensation block (62) has a pressing surface (621) with the same inclination as the inclined surface (611) on the side facing the newly replaced drain pipe (10). The pressing surface (621) of the compensation block (62) abuts against the newly replaced drain pipe (10). The compensation block (62) and the compensation groove (612) are slidably adapted. A telescopic spring (622) is provided in the compensation groove (612). One end of the telescopic spring (622) is fixed to the compensation block (62), and the other end of the telescopic spring (622) is fixed to the sealing seat (61).

3. A connector for renovating drainage pipes in old residential areas according to claim 1, characterized in that: The outer wall of the drive gear ring (51) is provided with a paving groove (511).

4. A connector for renovating drainage pipes in old residential areas according to claim 1, characterized in that: The inner wall of the connecting pipe (3) is provided with a through hole (35) communicating with the cavity (31). The through hole (35) is used for the limit screw (32) to pass through. The connecting pipe (3) is fixed with a limit block (36) in the through hole (35). The outer wall of the limit screw (32) is provided with a limit groove (322) that is slidably adapted to the limit block (36).

5. A connector for renovating drainage pipes in old residential areas according to claim 1, characterized in that: A sealing layer (8) is provided between the inner wall of the connecting pipe (3) and the outer wall of the newly replaced drain pipe (10).

6. A connector for renovating drainage pipes in old residential areas according to claim 1, characterized in that: A sealing ring (9) is provided inside the pipe (11) of the plate layer. A sealing gasket (91) is fixed on the inner wall of the sealing ring (9), and an adhesive layer (92) is fixed on the outer wall of the sealing ring (9).

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