Seal assembly for quickly installing CPVC (chlorinated polyvinyl chloride) pipeline for underground cable

Abstract

The invention discloses a sealing assembly for rapidly installing a CPVC pipeline for an underground cable, and relates to the technical field of pipelines, the sealing assembly comprises a first pipeline, a second pipeline, a connecting pipe and a protection structure, and the side walls of the outer rings of the two ends of the connecting pipe are fixedly connected with first sealing gaskets; the two first sealing gaskets are connected to the inner side wall of the first pipeline and the inner side wall of the second pipeline in an extrusion mode correspondingly, a plurality of storage grooves are formed in the outer ring side walls of the two ends of the connecting pipe, two connecting rods are rotationally connected into each storage groove through a rotating shaft, one connecting rod in each storage groove is connected with the corresponding storage groove, and the other connecting rod in each storage groove is connected with the corresponding connecting rod. The pipeline connecting piece has the advantages that when the pipeline is connected and sealed, the interior and the exterior of the pipeline can be fixed at the same time, so that the firmness between the pipeline and the connecting piece is improved, operations such as welding the surface of the pipeline or changing the internal structure of the pipeline are not needed, the installation efficiency of the pipeline is improved, and the working intensity of workers is reduced.

Description

TECHNICAL FIELD

[0001] The application relates to the field of pipelines, in particular to a sealing assembly for quickly installing a CPVC pipeline for underground cables. BACKGROUND

[0002] In underground cable laying engineering, CPVC pipelines are widely applied due to excellent heat resistance, corrosion resistance and mechanical strength. The sealing assembly for quickly installing the pipeline is suitable for pipeline connection and sealing in underground cable laying engineering.

[0003] Through retrieval, a safety sealing assembly for indoor gas pipeline connection is disclosed in Chinese Patent No. CN220566792U. Although the tightness between the first gas pipeline and the second gas pipeline is improved, and aging is prevented from occurring after long-term use, the pipeline needs to be welded with a ring body and a limiting plate on the surface of the pipeline, and a positioning groove needs to be formed in the pipeline, so as to connect and seal the two pipelines. However, the pipeline surface is in a bald state when the pipeline is actually cut and spliced, and the welding of the ring body and the formation of the positioning groove will result in more installation steps of the pipeline, thereby reducing the installation efficiency of the pipeline, increasing the work intensity, and easily causing damage to the surface of the pipeline when the ring body is welded and the positioning groove is formed, thereby affecting the strength of the pipeline and being not conducive to long-term use of the pipeline. SUMMARY

[0004] The purpose of the present application is to provide a sealing assembly for quickly installing a CPVC pipeline for underground cables to solve the problems raised in the background art.

[0005] The present application provides the following technical solution: a sealing assembly for quickly installing a CPVC pipeline for underground cables, comprising a first pipeline, a second pipeline, a connecting pipe and a protection structure, the connecting pipe is fixedly connected with a first sealing gasket on the outer circle side wall of both ends, the two first sealing gaskets are respectively extruded and connected to the inner side walls of the first pipeline and the second pipeline, a plurality of receiving grooves are formed on the outer circle side wall of both ends of the connecting pipe, two connecting rods are rotatably connected in each receiving groove through a rotating shaft, one of the connecting rods in each receiving groove is connected with the receiving groove, and the other connecting rod is rotatably connected with a driving plate at one end, each driving plate is slidably connected in each receiving groove, and two connecting rods in each receiving groove are rotatably connected with an extrusion plate at one end, each extrusion plate is slidably connected in each receiving groove, and a plurality of extrusion plates are respectively abutted on the inner side walls of the first pipeline and the second pipeline at one end. The outer wall of the connecting pipe is slidably connected with two sliding rings, the driving plates at the two ends of the connecting pipe are fixedly connected to the inner wall of the sliding rings, a fixing structure is arranged between the two sliding rings, sliding grooves are formed in the outer walls of the two sliding rings, a first tightening ring and a second tightening ring are slidably connected in the two sliding grooves, thread grooves are formed in one end of the first tightening ring and the second tightening ring, the side walls of the two thread grooves are respectively arranged on the side walls of the two sliding grooves, the first tightening ring and the second tightening ring are respectively arranged on the outer walls of the first pipe and the second pipe, a plurality of elastic strips are fixedly connected to the outer walls of the two sliding rings, one end of each elastic strip is fixedly connected with a pressing block, a second external thread is arranged on the side wall of each pressing block, the plurality of second external threads are threadedly connected in the two thread grooves, and the side walls of the plurality of pressing blocks are respectively arranged on the outer walls of the first pipe and the second pipe.

[0006] As a further scheme of the present application, the fixing structure comprises a first external thread formed in the outer wall of the connecting pipe, a first nut and a second nut are threadedly connected to the outer wall of the first external thread, the first nut is arranged on the side wall of the left sliding ring, and the second nut is arranged on the side wall of the right sliding ring.

[0007] As a further scheme of the present application, the two sliding rings are provided with sealing coatings at one end, the sealing coatings are arranged between the first nut, the second nut and the two sliding rings, and the sealing property between the two sliding rings and the first nut and the second nut can be improved.

[0008] As a further scheme of the present application, the protection structure comprises a first arc-shaped clamping plate and a second arc-shaped clamping plate, the first arc-shaped clamping plate and the second arc-shaped clamping plate are rotationally connected through a hinge, extrusion grooves are formed in the two ends of the first arc-shaped clamping plate and the second arc-shaped clamping plate, a third sealing gasket is arranged in each extrusion groove, the extrusion grooves at the two ends of the first arc-shaped clamping plate and the second arc-shaped clamping plate are clamped on the outer walls of the first tightening ring and the second tightening ring, fixed plates are fixedly connected to the side walls of the first arc-shaped clamping plate and the second arc-shaped clamping plate, through holes are formed in the side walls of the two fixed plates, and the two fixed plates are fixedly connected through a bolt and a nut, and the bolt penetrates through the through holes.

[0009] As a further scheme of the present application, two clamping grooves are formed in the side walls of the first arc-shaped clamping plate and the second arc-shaped clamping plate, and the four clamping grooves are arranged on the outer walls of the first nut and the second nut.

[0010] As a further scheme of the present application, insertion grooves are formed in the two ends of the two sliding rings, and the two insertion grooves are respectively inserted into the side walls of one end of the first pipe and the second pipe.

[0011] As a further scheme of the present application: two second sealing pads are fixedly connected in the two slots, and the two second sealing pads are respectively abutted against the side wall of one end of the first pipeline and the second pipeline.

[0012] As a further scheme of the present application: the bolt, the nut, the first nut and the second nut are all made of stainless steel, which can improve the strength of the bolt, the nut, the first nut and the second nut and prevent rust from affecting use.

[0013] Compared with the prior art, the present application has the following beneficial effects: When the first pipeline and the second pipeline need to be sealed and connected, the two ends of the connecting pipe are inserted into one end of the first pipeline and the second pipeline, the first sealing pads at the two ends of the connecting pipe are pressed against the inner side walls of the first pipeline and the second pipeline, the connecting pipe, the first pipeline and the second pipeline are sealed, the first nut is screwed, the first nut presses the sliding ring, at this time, the slot at one end of the sliding ring enters between the connecting pipe and the first pipeline, when the sliding ring moves, it can simultaneously drive the plurality of driving plates to move, the driving plates press the connecting rod to rotate, the connecting rod drives the pressing plates to move, the plurality of pressing plates are simultaneously abutted against the inner circle side wall of the first pipeline, through the pressing of the first nut, the plurality of pressing plates are firmly abutted against the inner side wall of the first pipeline, at this time, the second sealing pads on the side wall of the sliding ring are abutted against the side wall of the first pipeline, thereby completing the preliminary fixing between the first pipeline and the connecting pipe, then the second nut is screwed, the second nut presses the right sliding ring, the first pipeline, the second pipeline and the connecting pipe are preliminarily connected and fixed by screwing the first nut and the second nut, through the pressing and fixing of the pressing plates, the pipeline is not damaged due to welding or slotting operation, thereby improving the service life of the pipeline.

[0014] After the preliminary fixing between the connecting pipe and the first pipeline and the second pipeline, the first tightening ring and the second tightening ring are pushed, the side wall of the first tightening ring presses the inclined side wall of the elastic strip, the elastic strip moves under the stress and pressing, the elastic strip drives the pressing blocks to rotate, at this time, the pressing blocks are abutted against the outer circle side wall of the first pipeline, by rotating the first tightening ring, the first tightening ring is engaged with the second external thread through the thread groove, thereby firmly pressing the plurality of pressing blocks against the outer circle side wall of the first pipeline, at this time, the side wall of the thread groove is abutted against the side wall of the sliding groove, then the second tightening ring is pushed and tightened, thereby fixing the first pipeline, the second pipeline and the connecting pipe for the second time, improving the firmness between the connecting pipe and the first pipeline and the second pipeline, through the simultaneous pressing and fixing of the plurality of pressing blocks and the pressing plates to the inner and outer sides of the first pipeline, the fixing effect is high, and the surface or the inside of the first pipeline does not need to be improved, for example, a flange plate is welded on the surface of the pipeline, a thread is formed or the internal structure of the pipeline is changed, thereby improving the installation efficiency between the first pipeline and the connecting pipe and reducing the working intensity.

[0015] The third sealing gasket can improve the sealing property between the extrusion groove and the first tightening ring, and can also fix the first tightening ring and the second tightening ring under the extrusion of the extrusion groove, so that the first tightening ring and the second tightening ring are prevented from loosening and falling off, the two clamping grooves are clamped on the outer wall of the first nut and the second nut, so that the firmness of the connection pipe after being connected with the first pipeline and the second pipeline is further improved, and the first arc-shaped clamping plate and the second arc-shaped clamping plate can also protect the first external thread, prevent external factors from causing corrosion or damage to the surface of the first external thread, and improve the service life of the first external thread, for example, uniform corrosion or local corrosion may occur due to the influence of soil pH value, water content, microorganisms and stray current. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 A front view structural schematic diagram of a sealing assembly for a CPVC pipeline for quick installation of an underground cable is provided for the present application; Figure 2 A front view partial cross-sectional structural schematic diagram of a sealing assembly for a CPVC pipeline for quick installation of an underground cable is provided for the present application; Figure 3 A front view untightened structural schematic diagram of a sealing assembly for a CPVC pipeline for quick installation of an underground cable is provided for the present application; Figure 4 A front view cross-sectional structural schematic diagram of an embodiment of the present application is provided for the present application; Figure 5 A front view untightened cross-sectional structural schematic diagram of an embodiment of the present application is provided for the present application; Figure 6 An enlarged structural schematic diagram of A in an embodiment of the present application is provided for the present application; Figure 4 Figure 7 An enlarged structural schematic diagram of B in an embodiment of the present application is provided for the present application; Figure 5 Figure 8 A split structural schematic diagram of an embodiment of the present application is provided for the present application; Figure 9 A structural schematic diagram of a fixing ring in an embodiment of the present application is provided for the present application; Figure 10 A structural schematic diagram of an arc-shaped clamping plate in an embodiment of the present application is provided for the present application.

[0017] ​​In the figure: 1, the first pipeline; 2, the first tightening ring; 3, the sliding ring; 4, the first nut; 5, the first external thread; 6, the sliding groove; 7, the second pipeline; 8, the extrusion block; 9, the elastic strip; 10, the connecting pipe; 11, the threaded groove; 12, the first sealing pad; 13, the extrusion plate; 14, the connecting rod; 15, the storage groove; 16, the driving plate; 17, the second sealing pad; 18, the second external thread; 19, the insertion slot; 20, the through hole; 21, the fixed plate; 22, the first arc-shaped clamping plate; 23, the clamping groove; 24, the bolt; 25, the third sealing pad; 26, the extrusion groove; 27, the nut; 28, the second arc-shaped clamping plate; 29, the second tightening ring; 30, the second nut. DETAILED DESCRIPTION

[0018] The specific embodiments of the present application will be further described below with reference to the drawings. It should be noted that the description of these embodiments is used to help understand the present application, but does not constitute a limitation on the present application. In addition, the technical features involved in the various embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0019] Example 1, see Figures 1-10 The present application provides a technical solution: a sealing assembly for quickly installing CPVC pipeline for underground cable, comprising a first pipeline 1, a second pipeline 7, a connecting pipe 10 and a protection structure, the outer wall of both ends of the connecting pipe 10 is fixedly connected with a first sealing pad 12, the two first sealing pads 12 are respectively extruded and connected to the inner side walls of the first pipeline 1 and the second pipeline 7, the outer wall of both ends of the connecting pipe 10 is provided with a plurality of storage grooves 15, two connecting rods 14 are rotatably connected in each storage groove 15 through a rotating shaft, one of the connecting rods 14 in each storage groove 15 is connected with the storage groove 15, and the other connecting rod 14 is rotatably connected with a driving plate 16 at one end, each driving plate 16 is slidably connected in each storage groove 15, and the two connecting rods 14 in each storage groove 15 are rotatably connected with an extrusion plate 13 at one end, each extrusion plate 13 is slidably connected in each storage groove 15, and the plurality of extrusion plates 13 are respectively abutted on the inner side walls of the first pipeline 1 and the second pipeline 7 at one end.

[0020] See Figures 2-9 , the fixed structure comprises a first external thread 5, the first external thread 5 is provided on the outer wall of the connecting pipe 10, the outer wall of the first external thread 5 is threadedly connected with a first nut 4 and a second nut 30, the first nut 4 is abutted on the side wall of the left sliding ring 3, and the second nut 30 is abutted on the side wall of the right sliding ring 3.

[0021] See Figures 2-9The two sliding rings 3 are provided with sealing coatings at one end, and the sealing coatings are located between the first nut 4, the second nut 30 and the two sliding rings 3, so that the sealing property between the two sliding rings 3 and the first nut 4 and the second nut 30 is improved.

[0022] Please refer to Figures 4-9 The two sliding rings 3 are provided with two insertion grooves 19 at two ends, and the two insertion grooves 19 are respectively inserted into the side walls of one end of the first pipeline 1 and the second pipeline 7.

[0023] Please refer to Figures 4-9 The two insertion grooves 19 are fixedly connected with second sealing pads 17, and the two second sealing pads 17 are respectively abutted against the side walls of one end of the first pipeline 1 and the second pipeline 7.

[0024] Specifically, when the first pipeline 1 and the second pipeline 7 need to be sealed and connected, the two ends of the connecting pipe 10 are inserted into one end of the first pipeline 1 and the second pipeline 7, the first sealing pads 12 at the two ends of the connecting pipe 10 are pressed against the inner side walls of the first pipeline 1 and the second pipeline 7, so that the connecting pipe 10 and the first pipeline 1 and the second pipeline 7 are sealed, then the first nut 4 is screwed, so that the first nut 4 presses the sliding ring 3, at this time, the insertion groove 19 at one end of the sliding ring 3 enters between the connecting pipe 10 and the first pipeline 1, and when the sliding ring 3 moves, the plurality of driving plates 16 are simultaneously driven to move, so that the driving plates 16 press and rotate the connecting rods 14, the connecting rods 14 push the pressing plates 13 to move, so that the plurality of pressing plates 13 are simultaneously abutted against the inner side walls of the first pipeline 1, through the pressing of the first nut 4, the plurality of pressing plates 13 are firmly abutted against the inner side walls of the first pipeline 1, at this time, the second sealing pads 17 on the side walls of the sliding ring 3 are abutted against the side walls of the first pipeline 1, so that the preliminary fixing between the first pipeline 1 and the connecting pipe 10 is completed, then the second nut 30 is screwed, so that the second nut 30 presses the right sliding ring 3, that is, the first nut 4 and the second nut 30 are screwed to preliminarily connect and fix the first pipeline 1, the second pipeline 7 and the connecting pipe 10, through the pressing and fixing of the pressing plates, the pipelines are not damaged due to welding or slotting operation, so that the service life of the pipelines is improved.

[0025] Embodiment 2, please refer to Figures 1-10The application provides a technical scheme: a sealing assembly for quickly installing a CPVC pipeline for an underground cable, two sliding rings 3 are slidably connected to the outer ring side walls of a connecting pipe 10, a plurality of drive plates 16 at the two ends of the connecting pipe 10 are fixedly connected to the inner ring side walls of the sliding rings 3, a fixing structure is arranged between the two sliding rings 3, sliding grooves 6 are formed in the outer ring side walls of the two sliding rings 3, a first tightening ring 2 and a second tightening ring 29 are slidably connected to the two sliding grooves 6 respectively, threaded grooves 11 are formed in one ends of the first tightening ring 2 and the second tightening ring 29, the side walls of the two threaded grooves 11 abut against the side walls of the two sliding grooves 6 respectively, the first tightening ring 2 and the second tightening ring 29 are located outside a first pipeline 1 and a second pipeline 7 respectively, a plurality of elastic strips 9 are fixedly connected to the outer ring side walls of the two sliding rings 3, one end of each elastic strip 9 is fixedly connected to a pressing block 8, a second external thread 18 is arranged on the side wall of each pressing block 8, the plurality of second external threads 18 are screwed into the two threaded grooves 11 respectively, and the side walls of the plurality of pressing blocks 8 abut against the outer side walls of the first pipeline 1 and the second pipeline 7 respectively.

[0026] Specifically, after the connecting pipe 10 and the first pipeline 1 and the second pipeline 7 are preliminarily fixed, the first tightening ring 2 and the second tightening ring 29 are pushed, the side walls of the first tightening ring 2 extrude the inclined side walls of the elastic strips 9, the elastic strips 9 move under the extrusion force, the elastic strips 9 drive the pressing blocks 8 to rotate, at this time, the pressing blocks 8 abut against the outer ring side walls of the first pipeline 1, the first tightening ring 2 is rotated, the first tightening ring 2 is in threaded engagement with the second external threads 18 through the threaded grooves 11, so that the plurality of pressing blocks 8 are firmly extruded against the outer ring side walls of the first pipeline 1, at this time, the side walls of the threaded grooves 11 abut against the side walls of the sliding grooves 6, then the second tightening ring 29 is pushed and tightened, the first pipeline 1, the second pipeline 7 and the connecting pipe 10 are fixed again, the firmness between the connecting pipe 10 and the first pipeline 1 and the second pipeline 7 is improved, the inner and outer sides of the first pipeline 1 are extruded and fixed by the plurality of pressing blocks 8 and the extrusion plates 13 at the same time, the fixing effect is high, and the surface or the inside of the first pipeline 1 does not need to be improved, for example, a flange plate is welded on the surface of the pipeline, a thread is formed or the internal structure of the pipeline is changed, so that the installation efficiency between the first pipeline 1 and the connecting pipe 10 is improved, and the working intensity is reduced.

[0027] Embodiment 3, please refer to Figures 1-2 , Figure 10The application provides a technical scheme: a sealing assembly for quickly installing CPVC pipelines for underground cables, a protection structure comprising first and second arc-shaped clamping plates 22 and 28, the first and second arc-shaped clamping plates 22 and 28 being connected through a hinge, the first and second arc-shaped clamping plates 22 and 28 each being provided with an extrusion groove 26 at both ends, each extrusion groove 26 being provided with a third sealing gasket 25, the extrusion grooves 26 at both ends of the first and second arc-shaped clamping plates 22 and 28 being clamped on the outer wall of a first and second tightening ring 2 and 29, respectively, the side walls of the first and second arc-shaped clamping plates 22 and 28 each being fixedly connected with a fixed plate 21, the side walls of the two fixed plates 21 each being provided with a through hole 20, and the two fixed plates 21 being fixedly connected through a bolt 24 and a nut 27, the bolt 24 penetrating the through hole 20.

[0028] Please refer to Figures 1-2 、 Figure 10 , the side walls of the first and second arc-shaped clamping plates 22 and 28 each being provided with two clamping grooves 23, the four clamping grooves 23 being located on the outer wall of a first and second nut 4 and 30, respectively.

[0029] Please refer to Figures 1-5 、 Figure 8 、 Figure 10 , the bolt 24, the nut 27, the first nut 4 and the second nut 30 are made of stainless steel, which can improve the strength of the bolt 24, the nut 27, the first nut 4 and the second nut 30 and prevent rusting from affecting use.

[0030] Specifically, the first and second arc-shaped clamping plates 22 and 28 are clamped on the outer wall of the first and second tightening rings 2 and 29, and then the first and second arc-shaped clamping plates 22 and 28 are fixed through the bolt 24 and the nut 27, so that the extrusion grooves 26 at both ends are clamped on the outer wall of the first and second tightening rings 2 and 29, the third sealing gasket 25 can improve the sealing between the extrusion grooves 26 and the first tightening ring 2, and at the same time, under the extrusion of the extrusion grooves 26, the first and second tightening rings 2 and 29 can also be fixed, which can prevent the first and second tightening rings 2 and 29 from loosening and falling off, the two clamping grooves 23 are clamped on the outer wall of the first and second nuts 4 and 30, thereby further improving the firmness after the connection between the connecting pipe 10 and the first and second pipelines 1 and 7, and the first and second arc-shaped clamping plates 22 and 28 can also protect the first external thread 5, prevent external factors from causing corrosion or damage to the surface of the first external thread 5, and improve the service life of the first external thread 5, for example, uniform corrosion or local corrosion may occur due to the influence of soil pH value, water content, microorganisms and stray current.

[0031] The working principle and use process of the present application are as follows: when the first pipe 1 and the second pipe 7 need to be sealed and connected, the connecting pipe 10 is inserted into one end of the first pipe 1 and the second pipe 7, the first sealing gasket 12 at both ends of the connecting pipe 10 is pressed against the inner side wall of the first pipe 1 and the second pipe 7, the sealing between the connecting pipe 10 and the first pipe 1 and the second pipe 7 is realized, then the first nut 4 is screwed, the first nut 4 presses the sliding ring 3, at this time the insertion slot 19 at one end of the sliding ring 3 enters between the connecting pipe 10 and the first pipe 1, the sliding ring 3 moves while driving the plurality of driving plates 16 to move, the driving plates 16 press the connecting rod 14 to rotate, the connecting rod 14 drives the pressing plate 13 to move, the plurality of pressing plates 13 are pressed against the inner side wall of the first pipe 1 at the same time, the first nut 4 is pressed, the plurality of pressing plates 13 are firmly pressed against the inner side wall of the first pipe 1, at this time the second sealing gasket 17 on the side wall of the sliding ring 3 is pressed against the side wall of the first pipe 1, thereby completing the preliminary fixing between the first pipe 1 and the connecting pipe 10, then the second nut 30 is screwed, the second nut 30 presses the right sliding ring 3, the first pipe 1, the second pipe 7 and the connecting pipe 10 are preliminarily connected and fixed by screwing the first nut 4 and the second nut 30, the pipes are not damaged due to welding or slotting operation by the pressing and fixing of the pressing plate, thereby improving the service life of the pipes; After the preliminary fixing between the connecting pipe 10 and the first pipe 1 and the second pipe 7, the first tightening ring 2 and the second tightening ring 29 are pushed, the inclined side wall of the elastic strip 9 is pressed against the side wall of the first tightening ring 2, the elastic strip 9 moves under the stress, the elastic strip 9 drives the pressing block 8 to rotate, at this time the pressing block 8 is pressed against the outer side wall of the first pipe 1, the first tightening ring 2 is screwed, the first tightening ring 2 is engaged with the second external thread 18 through the thread groove 11, thereby firmly pressing the plurality of pressing blocks 8 against the outer side wall of the first pipe 1, at this time the side wall of the thread groove 11 is pressed against the side wall of the sliding groove 6, then the second tightening ring 29 is pushed and tightened, the first pipe 1, the second pipe 7 and the connecting pipe 10 are fixed again, the firmness between the connecting pipe 10 and the first pipe 1 and the second pipe 7 is improved, the inner and outer sides of the first pipe 1 are pressed and fixed by the plurality of pressing blocks 8 and the pressing plate 13 at the same time, the fixing effect is high, and the surface or the inside of the first pipe 1 does not need to be improved, for example, a flange plate is welded on the surface of the pipe, a thread is formed or the internal structure of the pipe is changed, thereby improving the installation efficiency between the first pipe 1 and the connecting pipe 10 and reducing the working intensity; The first arc-shaped clamping plate 22 and the second arc-shaped clamping plate 28 are clamped on the outer wall of the first tightening ring 2 and the second tightening ring 29, and then the first arc-shaped clamping plate 22 and the second arc-shaped clamping plate 28 are fixed by the bolt 24 and the nut 27, so that the extrusion groove 26 at both ends is clamped on the outer wall of the first tightening ring 2 and the second tightening ring 29. The third sealing gasket 25 can improve the sealing between the extrusion groove 26 and the first tightening ring 2, and can also fix the first tightening ring 2 and the second tightening ring 29 under the extrusion of the extrusion groove 26, so as to prevent the first tightening ring 2 and the second tightening ring 29 from loosening and falling off. The two clamping grooves 23 are clamped on the outer wall of the first nut 4 and the second nut 30, so as to further improve the firmness after the connection between the connecting pipe 10 and the first pipeline 1 and the second pipeline 7. Meanwhile, the first arc-shaped clamping plate 22 and the second arc-shaped clamping plate 28 can also protect the first external thread 5, prevent external factors from causing corrosion or damage to the surface of the first external thread 5, and improve the service life of the first external thread 5. For example, uniform corrosion or local corrosion may occur due to the influence of soil pH value, water content, microorganisms and stray current.

[0032] The embodiments of the application are described in detail above with reference to the drawings, but the application is not limited to the described embodiments. For those skilled in the art, various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the application, and still fall within the protection scope of the application.

Claims

1. A sealing assembly for a quick-install CPVC pipe for underground cables, comprising a first pipe (1), a second pipe (7), a connecting pipe (10) and a protective structure, characterized in that: The outer ring side walls at both ends of the connecting tube (10) are fixedly connected with a first sealing gasket (12), and the two first sealing gaskets (12) are respectively squeezed and connected to the inner side walls of the first pipe (1) and the second pipe (7). The outer ring side walls at both ends of the connecting tube (10) are provided with a plurality of receiving grooves (15), and each of the receiving grooves (15) is rotatably connected to two connecting rods (14) through a rotating shaft. One of the connecting rods (14) in each receiving groove (15) is connected to the receiving groove (15), and one end of the other connecting rod (14) is rotatably connected to a driving plate (16), and each driving plate (16) is slidably connected to each receiving groove (15). One end of the two connecting rods (14) in each receiving groove (15) is rotatably connected to an extrusion plate (13), and each extrusion plate (13) is slidably connected to each receiving groove (15). One end of the plurality of extrusion plates (13) respectively abuts against the inner side walls of the first pipe (1) and the second pipe (7); The outer ring side wall of the connecting tube (10) is slidably connected to two sliding rings (3), and multiple driving plates (16) at both ends of the connecting tube (10) are fixedly connected to the inner ring side wall of the sliding ring (3). A fixed structure is provided between the two sliding rings (3). The outer ring side walls of the two sliding rings (3) are provided with sliding grooves (6). The first tightening ring (2) and the second tightening ring (29) are slidably connected in the two sliding grooves (6). One end of the first tightening ring (2) and the second tightening ring (29) is provided with a thread groove (11). The side walls of the two thread grooves (11) are respectively against the two On the side wall of the sliding groove (6), the first tightening ring (2) and the second tightening ring (29) are respectively located on the outer rings of the first pipe (1) and the second pipe (7), and the outer ring side walls of the two sliding rings (3) are fixedly connected with a plurality of elastic strips (9), and one end of each elastic strip (9) is fixedly connected with an extrusion block (8), and the side wall of each extrusion block (8) is provided with a second external thread (18), and the plurality of second external threads (18) are respectively connected with threads in the two thread grooves (11), and the side walls of the plurality of extrusion blocks (8) are respectively against the outer side walls of the first pipe (1) and the second pipe (7).

2. A quick-install CPVC pipe sealing assembly for underground cables according to claim 1, characterized in that: The fixing structure includes a first external thread (5), the first external thread (5) is provided on the outer ring side wall of the connecting pipe (10), the outer ring side wall of the first external thread (5) is threadedly connected with a first nut (4) and a second nut (30), the first nut (4) abuts against the side wall of the left sliding ring (3), and the second nut (30) abuts against the side wall of the right sliding ring (3).

3. A quick-install CPVC pipe sealing assembly for underground cables according to claim 2, characterized in that: One end of each of the two sliding rings (3) is provided with a sealing coating, and the sealing coating is located between the first nut (4), the second nut (30) and the two sliding rings (3), and can improve the sealing performance between the two sliding rings (3) and the first nut (4), the second nut (30).

4. A quick-install CPVC pipe sealing assembly for underground cables according to claim 2, characterized in that: The protective structure includes a first arc-shaped card plate (22) and a second arc-shaped card plate (28), the first arc-shaped card plate (22) and the second arc-shaped card plate (28) are rotatably connected by a hinge, an extrusion groove (26) is provided at both ends of the first arc-shaped card plate (22) and the second arc-shaped card plate (28), and a third sealing gasket (25) is provided in each of the extrusion grooves (26), the extrusion grooves (26) at both ends of the first arc-shaped card plate (22) and the second arc-shaped card plate (28) are respectively clamped on the outer ring side walls of the first tightening ring (2) and the second tightening ring (29), the side walls of the first arc-shaped card plate (22) and the second arc-shaped card plate (28) are fixedly connected with a fixing plate (21), the side walls of the two fixing plates (21) are provided with a through hole (20), and the two fixing plates (21) are fixedly connected by a bolt (24) and a nut (27), and the bolt (24) passes through the through hole (20).

5. A quick-install CPVC pipe sealing assembly for underground cables according to claim 4, characterized in that: The side walls of the first arc-shaped clamping plate (22) and the second arc-shaped clamping plate (28) are each provided with two clamping grooves (23), and the four clamping grooves (23) are respectively located on the outer rings of the first nut (4) and the second nut (30).

6. A quick-install CPVC pipe sealing assembly for underground cables according to claim 1, characterized in that: Both ends of the two sliding rings (3) are provided with slots (19), and the two slots (19) are respectively inserted into the side walls of one end of the first pipe (1) and the second pipe (7).

7. A quick-install CPVC pipe sealing assembly for underground cables according to claim 6, characterized in that: The two slots (19) are both fixedly connected with a second sealing gasket (17), and the two second sealing gaskets (17) respectively abut against the side walls of one end of the first pipe (1) and the second pipe (7).

8. The quick-install CPVC pipe sealing assembly for underground cables according to claim 4, characterized in that: The bolt (24), nut (27), first nut (4), and second nut (30) are all made of stainless steel.

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