Large PE pipe and pipeline joint assembly

Abstract

The invention discloses a large PE pipe and pipeline joint assembly, and relates to the technical field of conveying pipelines, the large PE pipe and pipeline joint assembly comprises a fixing mechanism arranged at the end, located in an arc-shaped clamping groove, of an outer protection layer, the fixing mechanism comprises an inner lining plate abutting against the inner wall of an inner protection layer, and a fixing ring A is fixedly arranged at one end of the inner lining plate; a plurality of outer lining plates which are of the same structure and are arranged at intervals are fixedly arranged on the outer ring, away from the inner lining plate, of the fixing ring A, a plurality of arc-shaped limiting strips which are arranged at intervals in an array mode are fixedly arranged on the inner ring faces of the outer lining plates, and the arc-shaped limiting strips correspond to the arc-shaped clamping grooves and are clamped and limited with the arc-shaped clamping grooves; a butt joint disc abuts against the side, away from the arc-shaped strip, of the annular plate. The problems that the reinforcing effect is poor due to the fact that the pipeline wall is smooth, the sealing performance is poor due to the fact that pressure is too large, and the pipeline is inconvenient to disassemble and assemble when needing to be disassembled, replaced and maintained are solved.

Description

Technical Field

[0001] The present application relates to the field of transportation pipeline technology, and in particular to a large PE pipe and a pipeline joint assembly. Background Art

[0002] Pipe connection is a common connection method for engines and test laboratories. Generally, there are hose and clamp, threaded connection, flange connection and other connection methods. Almost all connection methods have specific requirements for the connected pipes, such as welding flanges and processing threads on the pipe connection ends. The most basic hose and clamp connection method also requires the connection end of the connected pipe to be designed with an anti-slip boss. Since the outer wall of the bare pipe is smooth and no special connection structure is processed, the hose and clamp connection method is generally used. However, this connection method has the problem that the hose is easy to slip when the pressure inside the pipe is high.

[0003] For example, Chinese patent publication number CN201720081292.5 discloses a smooth pipe connection assembly. The patent reduces leakage points by using screws to tighten the smooth pipe to prevent it from falling off and uses O-rings for sealing. At the same time, an adjustment ring and a return spring structure are used to ensure the connection accuracy between the connector body and the pipe to be connected.

[0004] When the above device is in use, the anti-slip effect of using screws to tighten the smooth pipe is poor, and it is easy to cause the water pressure to be too high and cause it to fall off. The screws are easy to damage the pipe wall when they are embedded, thereby affecting the overall sealing. In addition, when the above device is disassembled and replaced as a whole, the water in the pipe needs to be drained or another pipe needs to be opened for drainage, which causes great inconvenience when the above device is disassembled and replaced. Summary of the invention

[0005] In order to improve the poor reinforcement effect caused by the smooth pipe wall, the poor sealing performance caused by excessive pressure, and the inconvenience of disassembly and assembly when the pipe needs to be disassembled, replaced and repaired, the present application provides a large PE pipe and pipe joint assembly.

[0006] The large PE pipe and pipe joint assembly provided in this application adopts the following technical solution: A large PE pipe comprises an outer protective layer and an inner protective layer, a reinforcing layer is fixedly arranged between the outer protective layer and the inner protective layer, and one end of the outer protective layer is provided with a plurality of arc-shaped slots with the same structure in an array around the outer protective layer.

[0007] By adopting the above technical solution, the outer protective layer and the inner protective layer are composed of high-density polyethylene HDPE material, which has excellent corrosion resistance and impact resistance, and is an ideal material for making large PE pipes. It is tightly combined with the reinforcement layer to form the main structure of the pipeline, and the arc-shaped groove can help the pipe to be installed and fixed quickly, and during the installation process, the entire pipe wall will not be penetrated due to misoperation, resulting in the destruction of the sealing performance.

[0008] A pipe joint assembly, used to connect the above-mentioned large PE pipe, includes a fixing mechanism arranged at one end of the arc-shaped groove of the outer protective layer, the fixing mechanism includes an inner lining plate abutting against the inner wall of the inner protective layer, one end of the inner lining plate is fixedly provided with a fixing ring A, the fixing ring A is fixedly provided with a plurality of outer lining plates with the same structure and arranged at intervals away from the outer ring of the inner lining plate, the inner ring surfaces of the plurality of the outer lining plates are fixedly provided with a plurality of arc-shaped limiting strips arranged at intervals in an array, and the plurality of the arc-shaped limiting strips correspond to the plurality of arc-shaped grooves and are mutually engaged and limited; The outer lining plate is externally threadedly connected with an oblique ring cover, one end of the oblique ring cover is fixedly provided with a gear ring A, one side of the gear ring A is rotatably provided with an outer sleeve ring A connected to one end of the oblique ring cover, both sides of the outer sleeve ring A are fixedly provided with side movable rings, and a transmission shaft and a threaded rod are movably penetrated in the middle of the two side movable rings, one side of one of the side movable rings is rotatably provided with a gear A meshing with the gear ring A and threadedly penetrated with the threaded rod, and the transmission shaft and the threaded rod are provided with a tail ring fixedly connected to the outer ring surface of the outer protective layer at one end away from the gear A; A rotating opening and closing mechanism is provided on the side of the outer ring A away from the bevel ring cover, and the rotating opening and closing mechanism includes a fixing ring B fixed on the side of the fixing ring A away from the inner lining plate, and an arc strip is provided on the side of the fixing ring B away from the fixing ring A, and a ring plate is provided on the side of the arc strip away from the fixing ring B, and a gear ring B is fixed on the outer ring surface of the ring plate, and a gear B is meshed with one side of the gear ring B and fixedly penetrated by the threaded rod, and a docking plate is abutted against the side of the ring plate away from the arc strip.

[0009] By adopting the above technical scheme, the arc-shaped limit strip and the arc-shaped groove cooperate with each other to enable the entire PE pipe and the outer lining plate to be clamped and limited, and the entire PE pipe wall is clamped in the middle under the action of the inner lining plate and the fixing ring A, and then fast fixed installation or disassembly is achieved under the action of the fixing mechanism. The rotating opening and closing mechanism can close the pipe mouth and cut off the water flow when the pipe is replaced under the cooperation of the fixing ring B, the arc-shaped strip and the ring plate, and the pipe can be replaced without the need for diversion operations.

[0010] Preferably, the fixing mechanism further comprises external threads formed on the outer annular surfaces of a plurality of outer lining plates, and the external threads are externally threadedly connected to internal threads formed on the inner annular surface of the oblique ring cover.

[0011] By adopting the above technical solution, the external thread and the internal thread are threadedly connected to each other, so that the outer lining plate and the oblique ring cover can be threadedly connected and separated from each other.

[0012] Preferably, the outer ring A is provided with an inner sliding ring on the inner ring surface on one side of the gear ring A, and a vertical outer sliding rod fixed on the outer ring surface of one end of the outer ring A is slidably arranged inside the inner sliding ring.

[0013] By adopting the above technical solution, the inner sliding ring and the vertical outer sliding rod cooperate with each other so that the outer ring A and the oblique ring cover can slide against each other.

[0014] Preferably, the rotary opening and closing mechanism further comprises a plurality of guide grooves of the same structure and arranged at intervals on the surface of the fixing ring B away from the fixing ring A, wherein a sliding shaft fixedly connected to the side wall of one end of the arc strip is slidably arranged inside the guide groove.

[0015] By adopting the above technical solution, the guide groove and the sliding shaft cooperate with each other to enable the arc strip to move on the fixing ring B.

[0016] Preferably, a fixed shaft is fixedly disposed on one end of the arc strip away from the sliding shaft and located on one side surface of the ring plate, and the fixed shaft is rotatably connected to the side wall of the ring plate at one side away from the arc strip.

[0017] By adopting the above technical solution, the fixed shaft and the ring plate cooperate with each other, so that when the ring plate rotates, it can drive the fixed shaft to rotate and drive one end of the arc strip to rotate and close.

[0018] Preferably, a latex ring is sleeved on the lower end of the arc strip, and side earrings are fixedly provided on both sides of the upper part of the latex ring, one of the side earrings is fixedly connected to the inner ring surface of the ring plate, and the other side earring is fixedly connected to the inner ring surface of the fixing ring B.

[0019] By adopting the above technical solution, the side earrings can help fix the latex ring, the ring plate and the fixing ring B.

[0020] Preferably, side slip rings B are fixedly provided on the inner circles of the two side surfaces of the docking plate, side slip rings A fixedly connected to the docking plate are provided outside the side slip rings B, and side slip grooves clamped with side earrings are provided between the side slip rings A and B.

[0021] By adopting the above technical solution, the side sliding ring B and the side sliding ring A cooperate with each other to achieve a sealing effect between the docking disc and the ring plate, and the upper side sliding groove and the side earring can further increase the sealing performance.

[0022] Preferably, a side ring groove is provided between the ring plate and the side earring, and the inner cavity of the side ring groove and the side sliding ring A are mutually engaged and limited.

[0023] By adopting the above technical solution, the side sliding groove can be clamped and limited with the side sliding ring A, thereby achieving the effect of sealing and supporting the ring plate and the docking plate.

[0024] Preferably, a sealing ring is fixedly provided on the outer ring of the surface of the fixing ring B on the side opposite to the ring plate.

[0025] By adopting the above technical solution, the sealing ring can shield and seal the gap between the fixing ring B and the ring plate.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. The arc-shaped groove provided at one end of the outer protective layer cooperates with the arc-shaped limit strip provided on the inner ring surface of the outer lining plate to limit the position of the PE pipe, and the oblique ring cover and the outer lining plate cooperate with each other to achieve fixation; 2. With the help of the threaded rod and the side moving ring, the rotating opening and closing mechanism and the fixing mechanism on both sides can move toward the middle and can be abutted and fixed with the docking plate, thereby achieving sealed docking; 3. The opening and closing of the arc strip at the end of the PE pipe is realized through the cooperation between the fixing ring B, the arc strip and the ring plate, and the sealing is realized with the assistance of the latex ring to prevent water from overflowing, thereby achieving the effect of interception and facilitating disassembly and replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is an overall top view of this application; Figure 2 This is an enlarged view of the connection relationship of the joint position of this application; Figure 3 This is a diagram showing the internal structure of this application; Figure 4 This is a cross-sectional view of the internal structure of the joint position of this application; Figure 5 This is an exploded front view of the rotary opening and closing mechanism of the present application; Figure 6 This is an exploded rear view of the rotary opening and closing mechanism of the present application; Figure 7 An exploded view of the fixing mechanism and the rotating opening and closing mechanism of the present application; Figure 8 This is a cross-sectional view of the internal structure of one side joint of the present application; Fig. 9 It is an enlarged cross-sectional view of the inner sliding ring and the vertical outer sliding rod of the present application; Fig.10 This is an enlarged cross-sectional view of the connection between the ring plate and the two side structures of the present application.

[0028] Reference numerals: 100, outer protective layer; 101, reinforcing layer; 102, inner protective layer; 103, arc-shaped slot; 200, fixing mechanism; 201, inner lining plate; 202, outer lining plate; 203, arc-shaped limit strip; 204, external thread; 205, fixing ring A; 206, oblique ring cover; 207, gear ring A; 208, outer ring A; 209, gear A; 210, inner sliding ring; 211, vertical outer sliding rod; 212, internal thread; 300, rotating opening and closing mechanism; 301, fixing ring B; 302, arc strip; 303, ring plate; 304, gear ring B; 305, guide groove; 306, fixed shaft; 307, sliding shaft; 308, gear B; 309, latex ring; 310, side ring groove; 311, side earring; 312, sealing ring; 400, tail ring; 401, transmission shaft; 402, threaded rod; 403, side moving ring; 500, docking plate; 501, side sliding ring A; 502, side sliding ring B; 503, side sliding groove. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1-Figure 10 This application is described in further detail.

[0030] The embodiment of the present application discloses a large PE pipe and a pipe joint assembly.

[0031] Example 1, reference Figure 1 A large PE pipe comprises an outer protective layer 100 in contact with soil and an inner protective layer 102 in contact with water, gas, etc., and a reinforcing layer 101 for enhancing toughness and compression resistance is fixedly arranged in the interlayer between the outer protective layer 100 and the inner protective layer 102, and the reinforcing layer 101 is made of a rigid material, and a plurality of arc grooves 103 with the same structure are opened on the outer protective layer 100 at both ends of each cut PE pipe, and the plurality of arc grooves 103 are arranged in an array at intervals, and the depth of the arc groove 103 is the thickness of the outer protective layer 100, that is, the bottom of the arc groove 103 is the outer surface of the reinforcing layer 101.

[0032] It should be noted that the outer protective layer 100, the reinforcement layer 101, and the inner protective layer 102 are all existing structures, and their structural principles are not described in detail here.

[0033] The implementation principle of a large PE pipe in an embodiment of the present application is as follows: the outer protective layer 100 and the inner protective layer 102 are mainly composed of high-density polyethylene HDPE material. HDPE has the characteristics of excellent corrosion resistance, good flexibility, light weight, and excellent impact resistance. It is an ideal material for making large PE pipes. This layer is tightly combined with the steel belt reinforcement layer of the reinforcement layer 101 to jointly constitute the main structure of the pipeline. The reinforcement layer 101 adopts high-strength steel belt and is formed in a spiral winding manner to provide strong structural support and ring stiffness for the pipeline. This design enables the pipeline to withstand greater external pressure and load, and is suitable for municipal application projects with a large burial depth. The setting of the arc groove 103 can help the pipe to be installed quickly and have a better fixing effect, and the entire pipe wall will not be penetrated due to misoperation during the installation process, resulting in the destruction of the sealing performance.

[0034] Example 2, reference Figure 2-Figure 10 The difference between this embodiment and the embodiment 1 is that a pipe joint assembly includes the outer protective layer 100, the reinforcing layer 101 and the arc-shaped groove 103 in the above-mentioned embodiment 1, and a fixing mechanism 200 is provided at both ends of each section of the cut PE pipe, and each fixing mechanism 200 has the same structure and installation method, and is located on the same horizontal line, and the fixing mechanism 200 includes an inner lining plate 201 abutting against each other on the inner wall of the inner protective layer 102, and one end of the inner lining plate 201 is fixedly connected to the inner ring of one side surface of the fixing ring A205, and the fixing ring A205 is located on the outer ring on the same side of the inner lining plate 201, and a plurality of outer lining plates 202 with the same structure are fixedly arranged around and around, and the plurality of outer lining plates 202 are arranged at intervals with each other, and external threads 204 are provided on the outer ring surfaces of several outer lining plates 202, and the structures of several external threads 204 are the same, and several arc-shaped limit strips 203 with the same structure are fixedly arranged on the inner ring surfaces of several outer lining plates 202, and several arc-shaped limit strips 203 are arranged in an array at intervals on the inner ring surface of the outer lining plates 202, and the height of several arc-shaped limit strips 203 is consistent with the depth of several arc-shaped grooves 103, and several arc-shaped limit strips 203 and several arc-shaped grooves 103 correspond to each other and can be clamped and limited to each other, so that the bottom surface of the arc-shaped limit strip 203 can abut against the outer ring surface of the reinforcement layer 101, and will not pierce the inner wall of the PE pipe, thereby causing the sealing effect to fail.

[0035] Reference Figure 2-Figure 10, an oblique ring cover 206 is provided on the external thread connection of the plurality of outer lining plates 202, and an internal thread 212 is provided on the inner ring surface of the oblique ring cover 206, and the internal thread 212 and the external thread 204 are mutually used and can be mutually threadedly connected, so that the oblique ring cover 206 can tighten the outer lining plate 202 more and more, so that the arc-shaped limit strip 203 and the reinforcement layer 101 are more closely abutted, and the outer ring surface of the oblique ring cover 206 at one end of the fixing ring A205 is fixedly arranged with the inner ring surface of the gear ring A207, and the oblique ring cover 206 is fixedly arranged with the inner ring surface of the gear ring A207, and the inner ring surface of the gear ring A207 is fixedly arranged with the outer ring surface of the gear ring A207. An outer ring A208 is arranged on the side away from the gear ring A207, and an inner sliding ring 210 with a smooth inner surface is provided on the inner ring surface of the outer ring A208 located on the side of the gear ring A207, and a vertical outer sliding rod 211 with a smooth outer surface is slidably arranged in the inner cavity of the inner sliding ring 210, and the inner ring surface of the vertical outer sliding rod 211 is fixedly arranged on the outer ring surface of the side of the bevel ring cover 206 away from the gear ring A207, so that the outer ring A208 and the bevel ring cover 206 can be slidably arranged with each other. Reference Figure 2-Figure 10 , and two side moving rings 403 are fixedly arranged on both sides of the outer ring surface of the outer sleeve ring A208, and the two side moving rings 403 have the same structure and are symmetrical to each other and are on the same horizontal line, and the middle part of one of the side moving rings 403 is movably penetrated by the transmission shaft 401, and the middle part of the other side moving ring 403 is threadedly penetrated by the threaded rod 402, and the side moving ring 403 threadedly penetrated is located on one side of the gear ring A207 and is rotatably arranged with the gear A209, and the gear A209 and the gear ring A207 correspond to each other and are meshed with each other, and the gear A209 The middle part is threaded through by a threaded rod 402, so that when the threaded rod 402 rotates, it can drive the gear A209 to rotate, and then drive the gear ring A207 to rotate synchronously, and the transmission shaft 401 and the threaded rod 402 located on both sides of the outer ring A208 are respectively provided with side movable rings 403 with the same structure as the two sides of the outer ring A208 at the end away from the gear A209, and a tail ring 400 is fixedly arranged between the two side movable rings 403, and the inner ring surface of the tail ring 400 is fixedly connected to the outer ring surface of the outer protective layer 100, so that the tail ring 400 can support the entire device.

[0036] It should be noted that the transmission shaft 401 and the threaded rod 402 are the same shaft, but are arranged on both sides of the tail ring 400 in opposite directions. Figure 1 As shown, this is to enable the devices on both sides to move toward the middle simultaneously without interfering with each other, thereby achieving mutual abutment and limiting, but the lengths of the two transmission shafts 401 and the threaded rods 402 are consistent, and thus the distance between the devices on both sides is consistent.

[0037] The tail ring 400 and the outer protective layer 100 are fixed to each other, and two identical side movable rings 403 are fixedly arranged on both sides of the outer ring A208 and the tail ring 400, and the middle parts of the two side movable rings 403 are penetrated by the transmission shaft 401 and the threaded rod 402, so that the transmission shaft 401 and the threaded rod 402 support the outer ring A208 and the tail ring 400 and keep them on the same horizontal line.

[0038] The arc-shaped groove 103 and the arc-shaped limit strip 203 on the inner ring surface of the outer lining plate 202 are mutually engaged and limited, so that the entire PE pipe is clamped between the outer lining plate 202 and the inner lining plate 201, and the fixed ring A205 can play a role in abutment, limitation and sealing for the entire PE pipe, and the outer ring A208 and the bevel ring cover 206 slide against each other, and an internal thread 212 is provided inside the bevel ring cover 206, and the internal thread 212 and the external thread 204 on the outer ring surface of the outer lining plate 202 are threadedly connected to each other, and at the same time, the gear A209 and the gear ring A207 fixed on the bevel ring cover 206 are meshed with each other, and the gear A209 is rotatably connected with the side movable ring 403 through which a thread passes on one side of the outer ring A208.

[0039] Through the connection relationship between the above-mentioned structures, the threaded rod 402 can drive the side moving rings 403 set on both sides of the outer ring A208 to move and the gear A209 to rotate, thereby making the outer ring A208 move synchronously, and the outer ring A208 will drive the bevel ring cover 206 to move together with the movement of the outer ring A208. At the same time, when the gear A209 rotates, it will drive the gear ring A207 to rotate, thereby making the gear ring A207 drive the bevel ring cover 206 to rotate, thereby making the bevel ring cover 206 able to rotate and move at the same time, thereby making the internal thread 212 able to be threadedly connected with the external thread 204, thereby realizing the connection and separation of the bevel ring cover 206 and the outer lining plate 202. Since the bevel ring cover 206 is inclined, the closer the bevel ring cover 206 is to the fixing ring A205 when connected to the outer lining plate 202, the tighter the abutment between the arc limit strip 203 and the arc slot 103, and the tighter the reinforcement of the entire fixing mechanism 200 and the entire PE pipe.

[0040] Reference Figure 2-Figure 10, a plurality of rotating opening and closing mechanisms 300 having the same structure and installation method are arranged on the side of the plurality of outer rings A208 away from the oblique ring cover 206, and the rotating opening and closing mechanisms 300 include a fixing ring B301 fixedly arranged on the side of the fixing ring A205 away from the inner lining plate 201, and a plurality of guide grooves 305 are opened on the side of the fixing ring B301 away from the fixing ring A205, and the structures of the plurality of guide grooves 305 are the same and are arranged at intervals from each other, and a plurality of sliding shafts 307 are slidably arranged in the inner cavities of the plurality of guide grooves 305, and the sides of the plurality of sliding shafts 307 away from the guide grooves 305 are fixedly connected to the outer ring of the surface of one side of the arc strip 302, and the lengths of the plurality of sliding shafts 307 are arranged according to the height of the overlap of the plurality of arc strips 302, so that the plurality of arc strips 302 can be moved under the action of the sliding shafts 307. The plurality of arc strips 302 are fixedly provided with a plurality of fixed shafts 306 on the side surface away from the fixed ring B301, and the length of the plurality of fixed shafts 306 is set according to the overlapping height of the arc strips 302 like the sliding shafts 307, and a ring plate 303 is rotatably provided on the side surface away from the arc strips 302, and the inner ring surface of the ring plate 303 and the outer protective layer 100 are slidably provided with each other, so that the fixed shaft 306 can be driven to rotate when the ring plate 303 rotates, but the fixed shaft 306 will realize self-rotation on the ring plate 303 under the limiting action of the arc strip 302, so that the arc strip 302 can follow the rotation of the ring plate 303, and cooperate with the sliding shaft 307 and the guide groove 305 to realize opening and closing.

[0041] Reference Figure 2-Figure 10 , and a sealing ring 312 is arranged on the outer ring of the surface of the side opposite to the fixing ring B301 and the ring plate 303, and the inner ring surface of the sealing ring 312 will not affect the retraction of the arc strip 302 into the fixing ring B301 and the ring plate 303, and the lower ends of the arc strips 302 are sleeved by latex rings 309, and the latex rings 309 can be made of high-toughness latex or high-toughness plastic materials, thereby ensuring high elasticity while ensuring good sealing performance, and two side earrings 311 are symmetrically fixed on both sides of the upper part of the latex ring 309, and the two side earrings 311 The structures are the same, and the outer ring surface of one side earring 311 is fixed to the inner ring surface of the ring plate 303, and the outer ring surface of the other side earring 311 is glued and fixed to the inner ring surface of the fixing ring B301, so that the arc strip 302 can wrap the latex ring 309 to close inward. Since there will be a gap when the arc strip 302 is closed alone, a latex ring 309 with high elasticity and good sealing performance is sleeved on the outside of the arc strip 302 to achieve a perfect sealing effect, so that when replacing and disassembling the PE pipe, the water flow in the pipe can be cut off, and the replacement is more convenient.

[0042] Reference Figure 2-Figure 10A side ring groove 310 is provided between the ring plate 303 and the outer ring surface of the fixed side earring 311, and the position of the side ring groove 310 corresponds to the position of the side slip ring A501, and the width of the side ring groove 310 is 2-4 mm larger than the width of the side slip ring A501, so that the side ring groove 310 and the side slip ring A501 can be mutually engaged and limited, and the outer ring surface of the ring plate 303 and the inner ring surface of the gear ring B304 are fixed to each other, and the gear ring B304 is located on one side of the threaded rod 402 and meshes with the gear B308, and the middle part of the gear B308 is fixedly penetrated by the threaded rod 402, so that the gear B308 can drive the ring plate 303 to rotate while rotating with the threaded rod 402.

[0043] The gear B308 is fixedly penetrated by the threaded rod 402, so that when the threaded rod 402 rotates, the gear B308 can be driven to rotate, and then the gear B308 can drive the gear ring B304 to rotate synchronously, and the gear ring B304 can drive the ring plate 303 to rotate while rotating, and the ring plate 303 can drive the fixed shaft 306 to rotate while rotating, and the fixed shaft 306 will be restricted by the arc strip 302 when it rotates, so that the fixed shaft 306 can rotate with the arc strip 302 while following the ring plate 303 and rotating under the action of the arc strip 302, and the arc strip While following the rotation, 302 will drive the sliding shaft 307 fixed on the other side surface to slide in the inner cavity of the guide groove 305, so that the arc strip 302 can be closed. When the arc strip 302 is closed, it can drive the latex ring 309 set on the lower part of the arc strip 302 to stretch, and always wrap the outside of the arc strip 302, and play a sealing role when the arc strip 302 is closed, so that water cannot flow out through the gap between the arc strips 302. The material of the arc strip 302 can be selected from high-strength steel, which can better cut off the water flow without causing deformation or damage itself.

[0044] It should be noted that internal hexagonal holes may be provided at both ends of the threaded rod 402 and the transmission shaft 401 for connection with an external hexagonal wrench, thereby realizing the rotation of the threaded rod 402 and the transmission shaft 401 .

[0045] Reference Figure 2 , Fig.10, and the side surface of the ring plate 303 away from the arc strip 302 is arranged in abutment with the side surface of the docking plate 500, and the inner circle of the two side surfaces of the docking plate 500 is fixedly connected to the side surface of the side slip ring B502, and the two side surfaces of the docking plate 500 are fixedly connected to the side slip ring A501 at one end away from the side slip ring B502, and a side sliding groove 503 is provided between the side slip ring A501 and the side slip ring B502, and the side sliding groove 503 and the side earring 311 are mutually clamped, and side movable rings 403 are also fixedly provided on both sides of the docking plate 500 to cooperate with the threaded rod 402 and the transmission shaft 401 to play a fixed support effect.

[0046] Side sliding rings B502, side sliding rings A501 and side sliding grooves 503 which are symmetrical and have the same structure are arranged on the two side surfaces of the docking plate 500, so that both sides of the docking plate 500 can be docked with the ring plate 303, so that the docking plate 500 can abut and limit the fixing mechanism 200, the rotating opening and closing mechanism 300 and the entire device at both ends, and realize sealing and quick disassembly under the extrusion of the devices at both ends, while not affecting the rotation of the ring plates 303 on both sides of the docking plate 500 and the interception of the water flow by the entire rotating opening and closing mechanism 300.

[0047] The implementation principle of Example 2 is as follows: first, insert one end of the PE pipe between the inner lining plate 201 and the outer lining plate 202, and then abut against the fixing ring A205, so that the arc-shaped slot 103 and the arc-shaped limit strip 203 are mutually engaged, and then the threaded rod 402 is rotated by the external hexagonal wrench, thereby driving the side moving rings 403 set on both sides of the outer ring A208 to move, and the gear A209 is rotated, so that the outer ring A208 moves synchronously, and at the same time drives the oblique ring cover 206 to move together, and at the same time when the gear A2 When 09 rotates, it will drive the gear ring A207 to rotate along, and then the gear ring A207 drives the bevel ring cover 206 to rotate, so that the bevel ring cover 206 can rotate and move at the same time, so that the internal thread 212 can be threadedly connected with the external thread 204, thereby realizing the connection and separation of the bevel ring cover 206 and the outer lining plate 202. Since the bevel ring cover 206 is inclined, the closer the bevel ring cover 206 is to the fixing ring A205 when connected to the outer lining plate 202, the tighter the contact between the arc limit strip 203 and the arc slot 103.

[0048] When the threaded rod 402 and the transmission shaft 401 rotate, the gear B308 will be driven to rotate, and then the gear ring B304 will be driven to rotate synchronously, and the gear ring B304 will drive the ring plate 303 to rotate, and the ring plate 303 will drive the fixed shaft 306 to rotate, and the fixed shaft 306 will be restricted by the arc strip 302 when it follows the rotation, so that the fixed shaft 306 will follow the ring plate 303 with the arc strip 302 and rotate under the action of the arc strip 302, and the arc strip 302 will drive the fixed shaft 306 to rotate with the ring plate 303 while rotating. The sliding shaft 307 fixed to the other side surface slides in the inner cavity of the guide groove 305, so that the arc strip 302 can be opened and closed. While the arc strip 302 is opening and closing, it can drive the latex ring 309 sleeved on the lower part of the arc strip 302 to stretch and shrink. The latex ring 309 is always wrapped around the outside of the arc strip 302, and plays a sealing role when the arc strip 302 is closed, so that water cannot flow out through the gap between the arc strips 302, so that the water flow in the pipe can be cut off during replacement and disassembly, which is convenient for replacement.

[0049] The above are only optional embodiments of the present disclosure and are not intended to limit the present disclosure. For those skilled in the art, the present disclosure may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. A large PE pipe, characterized by: It comprises an outer protective layer (100) and an inner protective layer (102), wherein a reinforcing layer (101) is fixedly arranged between the outer protective layer (100) and the inner protective layer (102), and a plurality of arc-shaped slots (103) with the same structure are arranged around an array at one end of the outer protective layer (100).

2. A pipe joint assembly, used to connect a large PE pipe as claimed in claim 1, characterized in that: The invention comprises a fixing mechanism (200) arranged on an outer protective layer (100) at one end of the arc-shaped clamping groove (103), the fixing mechanism (200) comprising an inner lining plate (201) abutting against the inner wall of the inner protective layer (102), a fixing ring A (205) being fixedly provided at one end of the inner lining plate (201), a plurality of outer lining plates (202) having the same structure and arranged at intervals being fixedly provided on the outer ring of the fixing ring A (205) away from the outer ring of the inner lining plate (201), a plurality of arc-shaped limiting strips (203) arranged at intervals in an array being fixedly provided on the inner ring surfaces of the plurality of outer lining plates (202), the plurality of arc-shaped limiting strips (203) corresponding to the plurality of arc-shaped clamping grooves (103) and being mutually clamped and limited; The outer lining plate (202) is externally threadedly connected to an oblique ring cover (206), one end of the oblique ring cover (206) is fixedly provided with a gear ring A (207), one side of the gear ring A (207) is rotatably provided with an outer ring A (208) that is connected to one end of the oblique ring cover (206), both sides of the outer ring surface of the outer ring A (208) are fixedly provided with side moving rings (403), the middle parts of the two side moving rings (403) are movably penetrated with a transmission shaft (401) and a threaded rod (402), one side of one of the side moving rings (403) is rotatably provided with a gear A (209) that is meshed with the gear ring A (207) and threadedly penetrated with the threaded rod (402), and the end of the transmission shaft (401) and the threaded rod (402) away from the gear A (209) is provided with a tail ring (400) that is fixedly connected to the outer ring surface of the outer protective layer (100); A rotating opening and closing mechanism (300) is provided on the side of the outer ring A (208) away from the oblique ring cover (206), and the rotating opening and closing mechanism (300) comprises a fixing ring B (301) fixedly arranged on the side of the fixing ring A (205) away from the inner lining plate (201), an arcuate strip (302) is provided on the side of the fixing ring B (301) away from the fixing ring A (205), a ring plate (303) is provided on the side of the arcuate strip (302) away from the fixing ring B (301), a toothed ring B (304) is fixedly arranged on the outer ring surface of the ring plate (303), a gear B (308) fixedly arranged and penetrating the threaded rod (402) is meshedly arranged on one side of the toothed ring B (304), and a docking plate (500) is abuttedly arranged on the side of the ring plate (303) away from the arcuate strip (302).

3. A pipe joint assembly according to claim 2, characterized in that: The fixing mechanism (200) further comprises external threads (204) formed on the outer annular surfaces of the plurality of outer lining plates (202), wherein the external threads (204) are externally threadedly connected to internal threads (212) formed on the inner annular surface of the oblique ring cover (206).

4. A pipe joint assembly according to claim 2, characterized in that: The outer sleeve ring A (208) is provided with an inner sliding ring (210) on the inner ring surface of one side of the gear ring A (207), and a vertical outer sliding rod (211) is slidably arranged inside the inner sliding ring (210) and is fixed to the outer ring surface of one end of the outer sleeve ring A (208) on the oblique ring cover (206).

5. A pipe joint assembly according to claim 2, characterized in that: The rotary opening and closing mechanism (300) further comprises a plurality of guide grooves (305) of the same structure and arranged at intervals, which are formed on the surface of the fixing ring B (301) on the side away from the fixing ring A (205), and a sliding shaft (307) fixedly connected to the side wall of one end of the arc-shaped strip (302) is slidably arranged inside the guide groove (305).

6. A pipe joint assembly according to claim 2, characterized in that: A fixed shaft (306) is fixedly disposed on one end of the arc strip (302) away from the sliding shaft (307) and located on the surface of one side of the ring plate (303); the fixed shaft (306) is rotatably connected to the side wall of the ring plate (303) on the side away from the arc strip (302).

7. A pipe joint assembly according to claim 2, characterized in that: A latex ring (309) is sleeved on the lower end of the arc-shaped strip (302), and side earrings (311) are fixedly provided on both sides of the upper part of the latex ring (309), wherein one of the side earrings (311) is fixedly connected to the inner ring surface of the ring plate (303), and the other side earring (311) is fixedly connected to the inner ring surface of the fixing ring B (301).

8. A pipe joint assembly according to claim 2, characterized in that: Side sliding rings B (502) are fixedly provided on the inner rings of the two side surfaces of the docking plate (500), side sliding rings A (501) fixedly connected to the docking plate (500) are provided outside the side sliding rings B (502), and side sliding grooves (503) clamped to the side earrings (311) are provided between the side sliding rings A (501) and the side sliding rings B (502).

9. A pipe joint assembly according to claim 2, characterized in that: A side ring groove (310) is provided between the ring plate (303) and the side earring (311), and the inner cavity of the side ring groove (310) and the side sliding ring A (501) are mutually engaged and limited.

10. A pipe joint assembly according to claim 2, characterized in that: A sealing ring (312) is provided on the outer ring of the surface of the side opposite to the ring plate (303) of the fixing ring B (301).

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