Eccentric reducer connecting pipe fitting

Abstract

The invention relates to the technical field of pipe fitting connection, in particular to an eccentric reducer connecting pipe fitting which comprises a fixing part with a penetrating cavity. The two rotating parts are provided with inner containing cavities, the two rotating parts are located on the two opposite sides of the fixed part respectively, the rotating parts can rotate relative to the fixed part, and when the rotating parts abut against the fixed part, a communicating path is formed by the penetrating cavity and the two inner containing cavities; the two connecting parts are used for being connected with a pipeline, the two connecting parts are connected with the two rotating parts correspondingly, the rotating axes of the connecting parts and the rotating parts are arranged in a staggered mode, and the pipeline communicates with the communicating path through inner cavities of the connecting parts; the fixing unit is used for fixing a rotating part, the fixing unit is connected with the fixing part, and the fixing unit is connected with the rotating part; the connecting piece has the effect that the adaptability of the connecting piece to connection of pipe fittings with different eccentric amplitudes can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of pipe connection, and in particular to an eccentric reducer connecting pipe. Background Art

[0002] Pipe connection is an important part of pipeline installation, which is used to connect different pipeline sections together to ensure their sealing and fluidity. Pipe connection involves a variety of technologies and methods to adapt to different application scenarios and needs, such as threaded connection, socket connection, flange connection, hot melt connection and other connection methods.

[0003] The prior art discloses a different-diameter steel pipe connecting fitting, which includes a base, and two groups of connecting components are symmetrically arranged on the upper and lower sides of the base, each group of connecting components includes an inner clamp mechanism and an outer clamp mechanism; the inner clamp mechanism includes a telescopic rod located on the mid-vertical line of the base, and a plurality of inner clamp plates are arranged in a ring on the outer side of the telescopic rod, and the inner clamp plates are hinged on the telescopic rod through a support rod, and the outer walls of the inner clamp plates are tightly fitted on the inner wall of the steel pipe; the outer clamp mechanism includes a plurality of outer clamp plates, and the outer clamp plates are slidably connected to the base, and the plurality of outer clamp plates are arranged in a ring shape and are sleeved with locking sleeves on the outer sides, and the inner walls of the outer clamp plates are tightly fitted on the outer wall of the steel pipe; the outer clamp plate is inclined outwardly on the side close to the base and a threaded wire is provided on the outer wall, and the locking sleeve is a helical-toothed fastening nut, and the helical-toothed fastening nut is engaged with the outer clamp plate.

[0004] With regard to the above-mentioned related technologies, during the actual installation operation, due to many reasons such as the size deviation of the pipe fixings or the size deviation of the reserved holes at the wall penetration, the two steel pipes may not be able to remain coaxial, and the eccentricity amplitude cannot be measured. As a result, the different-diameter steel pipe connecting fittings disclosed in the prior art cannot be adapted. Therefore, there is an urgent need for a pipe connector that can adapt to different eccentricity amplitudes. Summary of the invention

[0005] In order to improve the adaptability of the connecting piece to the connection of pipes with different eccentricity amplitudes, the present application provides an eccentric reducer connecting pipe fitting.

[0006] The present application provides an eccentric reducer connecting pipe fitting adopting the following technical solution: An eccentric reducer connecting pipe fitting, comprising: A fixing portion having a through-hole; Two rotating parts with inner cavities, the two rotating parts are respectively located at opposite sides of the fixed part, the rotating parts can rotate relative to the fixed part, and when the rotating parts abut against the fixed part, the through cavity and the two inner cavities form a communication path; Two connecting parts for connecting with the pipeline, the two connecting parts are connected with the two rotating parts respectively, and the rotating axes of the connecting parts and the rotating parts are staggered, and the pipeline is connected with the communication path through the inner cavity of the connecting part; A fixing unit for fixing the rotating part, wherein the fixing unit is connected to the fixing part, and the fixing unit is connected to the rotating part.

[0007] By adopting the above technical solution, force is applied to the rotating part to make the rotating part rotate, and the rotating part drives the connecting part to rotate at the same time. Since the rotation axes of the connecting part and the rotating part are staggered, with the relative rotation of the two rotating parts, the relative position and the axis spacing between the two connecting parts will gradually change until the two connecting parts are respectively opposite to the positions of the pipes on both sides. At this time, force is applied to the rotating part by the fixing unit, so that the two rotating parts move toward the side away from the fixed part until the rotating part abuts against the fixed part and forms a sealed communication path. At this time, the connecting part is connected and fixed to the pipeline to achieve the connection of the two eccentric pipelines; the designed eccentric reducer connecting pipe fitting can realize the relative rotation of the fixed part and the rotating part while cooperating with the fixing unit to realize the construction of a sealed communication path. Through the connecting part staggered with the rotation axis of the rotating part, the adaptive connection of pipe fittings with different eccentric amplitudes can be realized through the rotation of the two rotating parts, thereby improving the adaptability of the connecting part to the connection of pipe fittings with different eccentric amplitudes. The position of the rotating part and the fixed part can be fixed by the fixing unit and a sealed communication path can be constructed.

[0008] In a specific embodiment, the fixing portion includes A fixing ring connected to the fixing unit; Two fixing tubes are respectively connected to two axial sides of the fixing ring, and one end of the fixing tube away from the fixing ring is coaxially connected with a first locking ring.

[0009] By adopting the above technical solution, the fixing part is designed, the fixing tube can be installed through the fixing ring, the first locking ring can be fixed through the fixing tube, and a through cavity can be formed by the fixing ring and the fixing tube.

[0010] In a specific possible implementation manner, the two fixed cylinders are coaxially arranged.

[0011] By adopting the above technical solution, the two coaxially arranged fixed cylinders can reduce the flow resistance when the liquid flows in the through cavity.

[0012] In a specific embodiment, the rotating part includes a rotating substrate, the rotating substrate being connected to the connecting portion and the rotating substrate being connected to the fixing unit; A rotating cylinder, one end of which is connected to the rotating base plate away from the connecting portion, and the other end of which is connected to a second locking ring, the second locking ring being located between the fixing ring and the first locking ring, and the second locking ring and the first locking ring having an overlapping area along their own axial direction.

[0013] By adopting the above technical solution, the rotating part is designed, the rotating cylinder can be installed through the rotating base plate, the second locking ring can be fixed through the rotating base plate, and the first locking ring and the second locking ring cooperate with each other, so that the distance between the fixed ring and the rotating base plate can be adjusted under the premise of realizing relative rotation of the rotating base plate and the fixed ring. Firstly, it can facilitate the connecting piece to extend between the two pipes, and secondly, the sealing of the communication path can be realized by driving the fixed ring and the rotating base plate away from each other, and the connection tightness between the connecting part and the pipe can be improved.

[0014] In a specific implementation manner, a sealing ring is provided on one side of the first locking ring and the second locking ring close to each other, and the sealing ring is located in the overlapping area.

[0015] By adopting the above technical solution, the designed sealing ring can improve the sealing performance between the first locking ring and the second locking ring.

[0016] In a specific possible implementation manner, the fixing unit includes a plurality of fixing bolts, the plurality of fixing bolts are distributed circumferentially around the fixing tube, the fixing bolts are threadedly connected to the rotating base plate, and the fixing bolts pass through the rotating base plate and abut against the fixing ring.

[0017] By adopting the above technical solution, the fixed unit is designed, and the distance between the fixed ring and the rotating substrate can be increased by fixing bolts, so that the first locking ring and the second locking ring are close to each other and pressed against each other to achieve sealing of the connecting path. At the same time, the relative stillness of the fixed ring and the rotating substrate can be achieved by pressing the first locking ring and the second locking ring against each other.

[0018] In a specific embodiment, the connecting portion comprises A sliding sheet, wherein a conical hole is formed on the rotating substrate, the conical hole is communicated with the inner cavity of the rotating cylinder, the sliding sheet is slidably connected with the rotating substrate, and an extension line of the sliding direction of the sliding sheet passes through the axis of the conical hole; A winding strip, one end of which is connected to the sliding sheet, the winding strip is wound around the outer circumference of the pipeline, and the winding strip can abut against the rotating substrate after being wound multiple times, and a glue injection cavity is formed between the rotating substrate, the winding strip and the pipeline.

[0019] By adopting the above technical scheme, when the rotating base plate is moved toward the side away from the fixing ring by the fixing bolt until a sealed communication path is formed, the end of the pipe abuts against the hole wall of the tapered hole, and then force is applied to the sliding sheet to make the winding strip abut against the outer wall of the pipe, and then force is applied to the winding strip to make the winding strip wind around the pipe and repeat the process to form a layer structure. At this time, the winding strip cooperates with the rotating base plate to seal the cavity formed by the tapered hole and the pipe to form a glue injection cavity, and then sealant is injected into the glue injection cavity. After the sealant solidifies, the gap between the winding strip, the pipe and the rotating base plate is filled and sealed to complete the connection of the pipe. The designed connection part can drive the winding strip to move through the sliding sheet, and can determine the starting winding point of the winding strip. The tapered hole can realize the adaptation of pipe fittings of different diameters, and the winding strip can realize the connection with the pipe and surround a glue injection cavity for glue injection and sealing.

[0020] In a specific possible implementation manner, the distances between the central axes of the conical holes opened on the two rotating substrates and the central axis of the rotating cylinder are equal.

[0021] By adopting the above technical solution, the two tapered holes with equal distances between the central axis and the central axis of the rotating cylinder can achieve a coaxial state of the two tapered holes after rotation, thereby realizing the connection of coaxial pipe fittings.

[0022] In a specific possible implementation manner, a locking groove is formed on a side of the winding strip close to the rotating substrate, and a groove width of the locking groove gradually decreases toward the rotating substrate.

[0023] By adopting the above technical solution and designing the locking groove, during the glue injection period after the winding strip is completed, the sealant enters the locking groove and solidifies, which can improve the connection stability between the sealant and the winding strip.

[0024] In a specific possible implementation manner, a plurality of glue deposition grooves are provided on the rotating base plate, the glue deposition grooves are communicated with the inner cavity of the tapered hole, and the groove width of the glue deposition grooves gradually decreases toward the side away from the rotating cylinder.

[0025] By adopting the above technical solution and designing the glue sinking groove, the connection stability between the sealant and the rotating substrate can be improved during the glue injection process.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. The designed eccentric reducer connecting pipe fittings can realize relative rotation through the fixed part and the rotating part while cooperating with the fixed unit to realize the construction of a sealed communication path. Through the connecting part that is staggered with the rotation axis of the rotating part, the adaptive connection of pipe fittings with different eccentricity amplitudes can be realized through the rotation of the two rotating parts, thereby improving the adaptability of the connecting fittings to the connection of pipe fittings with different eccentricity amplitudes. The fixing unit can realize the position fixation of the rotating part and the fixed part and construct a sealed communication path.

[0027] 2. The designed eccentric reducer connecting pipe fitting can install the rotating cylinder by rotating the base plate, and the second locking ring can be fixed by rotating the base plate. Through the cooperation of the first locking ring and the second locking ring, the distance between the fixed ring and the rotating base plate can be adjusted on the premise of realizing relative rotation of the rotating base plate and the fixed ring. Firstly, it can facilitate the insertion of the connecting piece between the two pipes, and secondly, the sealing of the communication path can be realized by driving the fixed ring and the rotating base plate away from each other, and the connection tightness between the connecting part and the pipe can be improved.

[0028] 3. The designed eccentric reducer connecting pipe fittings can drive the winding strip to move through the sliding piece, and can determine the starting winding point of the winding strip. The tapered hole can be used to adapt to pipes of different diameters. The winding strip can be used to connect with the pipeline and form a glue injection cavity for glue injection and sealing. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural schematic diagram of an eccentric reducer connecting pipe fitting according to an embodiment of the present application.

[0030] Figure 2 yes Figure 1 Schematic diagram of the structure of the fixed part.

[0031] Figure 3 yes Figure 1 Schematic diagram of the structure of the rotating part.

[0032] Figure 4 yes Figure 1 sectional view of .

[0033] Figure 5 yes Figure 4 A magnified schematic diagram of part A in FIG.

[0034] Figure 6 It is a schematic diagram of the partial structure of the eccentric reducer connecting pipe fitting according to an embodiment of the present application.

[0035] Explanation of the reference numerals: 01, pipeline; 1, fixing part; 11, fixing ring; 12, fixing cylinder; 13, first locking ring; 2, rotating part; 21, rotating substrate; 211, conical hole; 212, glue deposition groove; 22, rotating cylinder; 23, second locking ring; 3, connecting part; 31, sliding sheet; 32, winding strip; 321, locking groove; 4, fixing unit; 41, fixing bolt; 5, sealing ring. DETAILED DESCRIPTION

[0036] The following is combined with Figure 1-6 This application is described in further detail.

[0037] The embodiment of the present application discloses an eccentric reducer connecting pipe fitting.

[0038] Reference Figure 1 and Figure 2 An eccentric reducer connecting pipe fitting comprises a fixing part 1, the fixing part 1 comprises a fixing ring 11, a fixing cylinder 12 and a first locking ring 13, a through hole is formed in the middle of the fixing ring 11, and openings are set at both ends of the fixing cylinder 12, and the number of the fixing cylinders 12 is two, and the two fixing cylinders 12 are coaxially welded to the axial sides of the fixing ring 11, respectively, and the number of the first locking rings 13 is two, and the two first locking rings 13 are coaxially connected to the two fixing cylinders 12, respectively, and the first locking ring 13 is connected to one end of the fixing cylinder 12 away from the fixing ring 11, and the through hole and the inner cavity of the fixing cylinder 12 form a through cavity. In order to avoid excessive resistance when the liquid flows in the through cavity, the two fixing cylinders 12 are coaxially arranged.

[0039] Reference Figure 1 and Figure 3 Furthermore, the eccentric reducer connecting pipe fitting also includes two rotating parts 2, which are respectively located on opposite sides of the fixed ring 11, and the rotating part 2 can rotate relative to the fixed ring 11. The rotating part 2 specifically includes a rotating base plate 21, a rotating cylinder 22 and a second locking ring 23. The rotating cylinder 22 is hollow and has openings at both ends. The end of the rotating cylinder 22 away from the fixed ring 11 is welded and fixed to the rotating base plate 21, and the end of the rotating cylinder 22 close to the fixed ring 11 is welded and fixed to the second locking ring 23. The rotating cylinder 22 and the second locking ring 23 are coaxially arranged, and the inner cavity of the rotating cylinder 22 cooperates with the rotating base plate 21 forms an inner cavity, the second locking ring 23 is located between the fixed ring 11 and the first locking ring 13, and the second locking ring 23 and the first locking ring 13 have an overlapping area along their own axial direction, so that when the fixed ring 11 and the rotating substrate 21 are away from each other, the first locking ring 13 and the second locking ring 23 are pressed against each other, so that the through cavity and the inner cavity form a sealed communication path; in order to extend the service life of the fixed part 1 and the rotating part 2, the surfaces of the fixed ring 11, the fixed cylinder 12, the first locking ring 13, the rotating substrate 21, the rotating cylinder 22 and the second locking ring 23 are all coated with an anti-rust coating.

[0040] Reference Figure 4 Furthermore, a sealing ring 5 is provided on one side of the first locking ring 13 and the second locking ring 23 close to each other. The sealing ring 5 can be made of rubber material or other materials suitable for the sealing field. In this embodiment, the sealing ring 5 is preferably made of rubber material, and the sealing ring 5 is located in the overlapping area to improve the sealing performance between the first locking ring 13 and the second locking ring 23. In this application, when the outer diameter of the first locking ring 13 is greater than the outer diameter of the fixed cylinder 12, the outer diameter of the second locking ring 23 is smaller than the outer diameter of the rotating cylinder 22. When the outer diameter of the first locking ring 13 is smaller than the outer diameter of the fixed cylinder 12, the outer diameter of the second locking ring 23 is smaller than the outer diameter of the rotating cylinder 22. The outer diameter of the rotating cylinder 22 is larger than that of the rotating cylinder 22. The rotating cylinder 22 can be installed by rotating the base plate 21, and the second locking ring 23 can be fixed by rotating the base plate 21. The first locking ring 13 and the second locking ring 23 cooperate with each other to adjust the distance between the fixed ring 11 and the rotating base plate 21 on the premise of realizing relative rotation of the rotating base plate 21 and the fixed ring 11. Firstly, it can facilitate the insertion of the connecting piece between the two pipes 01. Secondly, the sealing of the communication path can be realized by driving the fixed ring 11 and the rotating base plate 21 away from each other, and the connection tightness between the connecting part 3 and the pipe 01 can be improved.

[0041] Reference Figure 4 Furthermore, in order to achieve the tight contact between the first locking ring 13 and the second locking ring 23 to form a closed communication path, the eccentric reducer connecting pipe also includes a fixing unit 4, which is connected to the fixing ring 11, and the fixing unit 4 is connected to the rotating substrate 21, so as to achieve the fixation of the rotating substrate 21.

[0042] Reference Figure 4 Specifically, the fixing unit 4 includes a plurality of fixing bolts 41, which are distributed around the axial direction of the fixing cylinder 12, and the fixing bolts 41 are threadedly connected to the rotating base plate 21. The fixing bolts 41 pass through one end of the rotating base plate 21 and abut against the fixing ring 11. By rotating the fixing bolts 41, the rotating base plate 21 can move away from the fixing ring 11, thereby realizing the tight sealing of the first locking ring 13 and the second locking ring 23; the fixing bolts 41 can increase the distance between the fixing ring 11 and the rotating base plate 21, thereby making the first locking ring 13 and the second locking ring 23 approach each other and abut against each other to realize the sealing of the communication path, and at the same time, the relative stillness of the fixing ring 11 and the rotating base plate 21 can be realized by the tight abutment of the first locking ring 13 and the second locking ring 23.

[0043] Reference Figure 4 Furthermore, in order to achieve connection with the pipeline 01, the eccentric reducer connecting pipe also includes two connecting parts 3, and the two connecting parts 3 are respectively installed on two rotating base plates 21, and the connecting parts 3 are staggered with the rotation axis of the central axis of the rotating cylinder 22.

[0044] Reference Figure 5 and Figure 6 Specifically, the connecting part 3 includes a sliding sheet 31 and a winding strip 32. A conical hole 211 is provided on the rotating substrate 21. The inner diameter of the conical hole 211 gradually decreases toward the side of the fixed ring 11, and the conical hole 211 is connected to the inner cavity of the rotating cylinder 22. A sliding groove is provided on the rotating substrate 21. The opening direction of the sliding groove is set through the central axis of the conical hole 211. The sliding sheet 31 slides in the sliding groove. One end of the winding strip 32 is welded and fixed to the sliding sheet 31. The winding strip 32 is wound around the outer peripheral side of the pipe 01, and the winding strip 32 can be stacked to form a layered structure after repeated winding. The winding strip 32 stacked to form a layered structure, the rotating substrate 21 and the pipe 01 form a glue injection cavity.

[0045] Reference Figure 4 and Figure 5 Furthermore, the distance between the central axis of the conical holes 211 opened on the two rotating substrates 21 and the central axis of the rotating cylinder 22 is equal, so that the coaxial state of the two conical holes 211 can be achieved after rotation, thereby realizing the connection of coaxial pipe fittings.

[0046] Reference Figure 5 and Figure 6 After the winding of the winding strip 32 is completed, the sealant is injected into the injection cavity through the injection port, and the connection of the pipeline 01 can be achieved when the sealant solidifies; when the rotating base plate 21 is moved toward the side away from the fixing ring 11 by the fixing bolt 41 and until a sealed communication path is formed, the end of the pipeline 01 abuts against the hole wall of the conical hole 211, and then force is applied to the sliding sheet 31 to make the winding strip 32 abut against the outer wall of the pipeline 01, and then force is applied to the winding strip 32 to make the winding strip 32 wind around the pipeline 01 and repeat the layer structure for many times. At this time, the winding strip 32 cooperates with the rotating base plate 21 to seal the cavity formed by the conical hole 211 and the pipeline 01 to form a glue injection cavity, and then the sealant is injected into the glue injection cavity. After the sealant solidifies, the gap between the winding strip 32, the pipeline 01 and the rotating base plate 21 is filled and sealed to complete the connection of the pipeline 01.

[0047] Reference Figure 5 and Figure 6A locking groove 321 is provided on the side of the winding strip 32 close to the rotating substrate 21, and the groove width of the locking groove 321 gradually decreases toward the side of the rotating substrate 21, and then during the glue injection after the winding of the winding strip 32 is completed, the sealant enters the locking groove 321 and solidifies, which can improve the connection stability between the sealant and the winding strip 32; at the same time, a plurality of glue sinking grooves 212 are provided on the rotating substrate 21, and the plurality of glue sinking grooves 212 are evenly distributed around the outer circumference of the pipe 01, and the glue sinking grooves 212 are connected to the inner cavity of the conical hole 211, and the groove width of the glue sinking groove 212 gradually decreases toward the side away from the rotating cylinder 22, which can improve the connection stability between the sealant and the rotating substrate 21 during the glue injection process, and the position stability of the winding strip 32 can be further improved by cooperating with the locking groove 321 and the glue sinking groove 212.

[0048] The implementation principle of an eccentric reducer connecting pipe fitting of the embodiment of the present application is as follows: force is applied to the rotating part 2 to make the rotating part 2 rotate, and the rotating part 2 drives the connecting part 3 to rotate at the same time. Since the connecting part 3 and the rotating axis of the rotating part 2 are staggered, with the relative rotation of the two rotating parts 2, the relative position and the axis spacing between the two connecting parts 3 will gradually change until the two connecting parts 3 are respectively opposite to the positions of the pipes 01 on both sides, and the rotating base plate 21 is moved toward the side away from the fixing ring 11 by the fixing bolt 41 until a sealed communication path is formed, the end of the pipe 01 abuts against the hole wall of the tapered hole 211, and then force is applied to the sliding sheet 31 to make the winding strip 32 abut against the outer wall of the pipe 01, and then force is applied to the winding strip 32 to make the winding strip 32 wrap around the pipe 01 and repeat the formation multiple times. layer structure, at this time, the winding strip 32 cooperates with the rotating substrate 21 to seal the cavity formed by the conical hole 211 and the pipe 01 to form a glue injection cavity, and then injects sealant into the glue injection cavity. After the sealant solidifies, the gap between the winding strip 32, the pipe 01 and the rotating substrate 21 is filled and sealed to complete the connection of the pipe 01; through the fixed part 1 and the rotating part 2, the fixed unit 4 can be cooperated to realize the construction of a sealed communication path while realizing relative rotation. Through the connecting part 3 staggered with the rotation axis of the rotating part 2, the adaptive connection of pipe fittings with different eccentricity amplitudes can be realized through the rotation of the two rotating parts 2, thereby improving the adaptability of the connecting piece to the connection of pipe fittings with different eccentricity amplitudes, and the fixing unit 4 can realize the position fixation of the rotating part 2 and the fixed part 1 and construct a sealed communication path.

[0049] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An eccentric reducer connecting pipe fitting, characterized in that: include: A fixing portion (1) having a through cavity; Two rotating parts (2) having inner cavities, the two rotating parts (2) are respectively located on opposite sides of the fixed part (1), the rotating parts (2) can rotate relative to the fixed part (1), and when the rotating parts (2) abut against the fixed part (1), a communication path is formed between the through cavity and the two inner cavities; Two connecting parts (3) for connecting to the pipeline (01), the two connecting parts (3) being connected to the two rotating parts (2) respectively, and the rotating axes of the connecting parts (3) and the rotating parts (2) being staggered, and the pipeline (01) being connected to the communication path through the inner cavity of the connecting parts (3); A fixing unit (4) for fixing a rotating part (2), wherein the fixing unit (4) is connected to the fixing part (1), and the fixing unit (4) is connected to the rotating part (2).

2. The eccentric reducer connecting pipe fitting according to claim 1, characterized in that: The fixing part (1) comprises A fixing ring (11), the fixing ring (11) being connected to the fixing unit (4); Two fixing tubes (12), the two fixing tubes (12) are respectively connected to two axial sides of the fixing ring (11), and one end of the fixing tube (12) away from the fixing ring (11) is coaxially connected to a first locking ring (13).

3. The eccentric reducer connecting pipe fitting according to claim 2, characterized in that: The two fixing cylinders (12) are coaxially arranged.

4. The eccentric reducer connecting pipe fitting according to claim 2, characterized in that: The rotating part (2) comprises A rotating substrate (21), the rotating substrate (21) being connected to the connecting portion (3), and the rotating substrate (21) being connected to the fixing unit (4); A rotating cylinder (22), one end of which is connected to the side of the rotating base plate (21) away from the connecting portion (3), and the other end of which is connected to a second locking ring (23), wherein the second locking ring (23) is located between the fixing ring (11) and the first locking ring (13), and the second locking ring (23) and the first locking ring (13) have an overlapping area along their own axial direction.

5. The eccentric reducer connecting pipe fitting according to claim 4, characterized in that: A sealing ring (5) is provided on one side of the first locking ring (13) and the second locking ring (23) close to each other, and the sealing ring (5) is located in the overlapping area.

6. The eccentric reducer connecting pipe fitting according to claim 4, characterized in that: The fixing unit (4) comprises a plurality of fixing bolts (41), the plurality of fixing bolts (41) being distributed circumferentially around the fixing cylinder (12), the fixing bolts (41) being threadedly connected to the rotating base plate (21), and the fixing bolts (41) passing through the rotating base plate (21) and abutting against the fixing ring (11).

7. The eccentric reducer connecting pipe fitting according to claim 4, characterized in that: The connecting portion (3) comprises A sliding sheet (31), wherein a conical hole (211) is formed on the rotating substrate (21), the conical hole (211) is communicated with the inner cavity of the rotating cylinder (22), the sliding sheet (31) is slidably connected with the rotating substrate (21), and an extension line of the sliding direction of the sliding sheet (31) passes through the axis of the conical hole (211); A winding strip (32), one end of which is connected to the sliding sheet (31), the winding strip (32) is wound around the outer circumference of the pipe (01), and the winding strip (32) can abut against the rotating substrate (21) after being wound multiple times, and a glue injection cavity is formed between the rotating substrate (21), the winding strip (32) and the pipe (01).

8. The eccentric reducer connecting pipe fitting according to claim 7, characterized in that: The distance between the central axis of the conical holes (211) opened on the two rotating base plates (21) and the central axis of the rotating cylinder (22) is equal.

9. The eccentric reducer connecting pipe fitting according to claim 7, characterized in that: A locking groove (321) is provided on the side of the winding strip (32) close to the rotating substrate (21), and the groove width of the locking groove (321) gradually decreases towards the side of the rotating substrate (21).

10. The eccentric reducer connecting pipe fitting according to claim 7, characterized in that: A plurality of glue sinking grooves (212) are provided on the rotating base plate (21), the glue sinking grooves (212) are communicated with the inner cavity of the conical hole (211), and the groove width of the glue sinking grooves (212) gradually decreases toward the side away from the rotating cylinder (22).

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