Novel high-heat-dissipation corrosion-resistant MPP double-wall corrugated pipe

Abstract

The utility model provides a novel high-heat-dissipation corrosion-resistant MPP double-wall corrugated pipe, which solves the problems of insufficient connection sealing performance and the like of the corrugated pipe, and comprises a corrugated pipe main body, the corrugated pipe main body is provided with a corrugated outer wall and a corrugated inner wall which are integrally formed, and a supporting cavity is formed between the corrugated outer wall and the corrugated inner wall. A bell and spigot is arranged at one end of the corrugated pipe body, a plug matched with the bell and spigot is arranged at the other end of the corrugated pipe body, a sealing ring is arranged at the plug, a sealing assembly is arranged between the sealing ring and the bell and spigot, and a locking assembly is arranged on the outer side of the end of the corrugated pipe body. The sealing structure has the advantages of good sealing effect, high structural strength and the like.

Description

Technical Field

[0001] The utility model belongs to the technical field of composite pipe fittings, and specifically relates to a novel high-heat dissipation and corrosion-resistant MPP double-wall corrugated pipe. Background Art

[0002] Double-wall corrugated pipe is a pipe made of two layers of material, commonly used in drainage, sewage, ventilation and other projects. Its inner wall is usually smooth, while the outer wall is corrugated. The corrugated structure of its outer wall provides high compressive resistance and can withstand ground pressure and heavy loads. The inner wall is smooth, which reduces fluid resistance and improves drainage efficiency. It is usually made of high-density polyethylene (HDPE) or polyvinyl chloride (PVC) materials and has good chemical corrosion resistance. However, in actual use, the existing double-wall corrugated pipe lacks an effective connection method, resulting in insufficient sealing at the connection and leakage. In addition, the existing double-wall corrugated pipe has poor bending performance and cannot meet complex wiring and drainage requirements.

[0003] In order to solve the shortcomings of the existing technology, people have conducted long-term exploration and proposed various solutions. For example, a Chinese patent document discloses a double-wall corrugated pipe [201710817856.1], which includes an outer wall and an inner wall, the outer wall is cylindrical, and an annular first convex part and a first concave part are alternately formed along the length direction of the outer wall, the inner wall is a straight cylinder, sleeved inside the outer wall, connected to the first concave part, and a first cavity is formed between the first convex part, the outer wall material is HDPE, and the inner wall material is LDPE.

[0004] The above solution solves the problem of bending of the double-wall corrugated pipe to a certain extent, but the solution still has many shortcomings, such as insufficient sealing at the connection and easy leakage. Summary of the invention

[0005] The utility model aims to solve the above problems and provide a novel high heat dissipation and corrosion-resistant MPP double-wall corrugated pipe with reasonable design and good sealing effect at the connection.

[0006] To achieve the above-mentioned purpose, the utility model adopts the following technical solutions: a new type of high heat dissipation and corrosion-resistant MPP double-wall corrugated pipe, including a bellows body, the bellows body has an integrally formed corrugated outer wall and a corrugated inner wall, a supporting cavity is formed between the corrugated outer wall and the corrugated inner wall, a socket is provided at one end of the bellows body and a plug adapted to the socket is provided at the other end, a sealing ring is provided at the plug, a sealing assembly is provided between the sealing ring and the socket, and a locking assembly is provided on the outside of the end of the bellows body.

[0007] In the above-mentioned new type of high heat dissipation and corrosion-resistant MPP double-wall corrugated pipe, the support cavity is annular and extends circumferentially along the corrugated pipe body, the support cavity is equidistantly arranged along the axial direction of the corrugated pipe body, and the corrugated outer wall and the corrugated inner wall between adjacent support cavities are connected as one.

[0008] In the above-mentioned new type of high heat dissipation and corrosion-resistant MPP double-wall corrugated pipe, the socket includes a socket clamped between the corrugated outer wall and the corrugated inner wall. The socket has a slot opposite to the plug, and corrugated surfaces for the corrugated outer wall and the corrugated inner wall to fit are respectively arranged on the inner and outer sides of the socket.

[0009] In the above-mentioned new type of high heat dissipation and corrosion-resistant MPP double-wall corrugated pipe, the plug includes an outer ring body fitted to the outer side of the corrugated outer wall and an inner ring body fitted to the inner side of the corrugated inner wall, and a limiting component is arranged between the outer ring body, the inner ring body and the corrugated pipe body.

[0010] In the above-mentioned new type of high heat dissipation and corrosion-resistant MPP double-wall corrugated pipe, the limit assembly includes a limit bar and a limit groove which are arranged between the outer ring body and the inner ring body and are slidably plugged into each other. The limit bar and the limit groove are arranged centrally symmetrically relative to the plug, and a limit protrusion embedded in the corrugated pipe body is provided on the side opposite to the outer ring body and the inner ring body.

[0011] In the above-mentioned novel high heat dissipation and corrosion-resistant MPP double-wall corrugated pipe, the plug has an insert sleeve inserted into a slot, a sealing ring is arranged at the end of the insert sleeve, and mutually meshing clamping threads are arranged between the insert sleeve and the slot.

[0012] In the above-mentioned novel high heat dissipation and corrosion-resistant MPP double-wall corrugated pipe, the sealing assembly includes a sealing strip arranged at the bottom of the slot, the sealing strip is concentrically distributed and pressed against the sealing ring.

[0013] In the above-mentioned novel high heat dissipation and corrosion-resistant MPP double-wall corrugated pipe, the locking assembly includes symmetrically arranged locking hoops, which are clamped and fixed with locking edges arranged on the socket and the outside of the plug.

[0014] In the above-mentioned new type of high heat dissipation and corrosion-resistant MPP double-wall corrugated pipe, the main body of the corrugated pipe is made of MPP material.

[0015] In the above-mentioned novel high heat dissipation and corrosion-resistant MPP double-wall corrugated pipe, a reinforcement layer of LDPE material is arranged on the inner side of the corrugated pipe body.

[0016] Compared with the existing technology, the advantages of the utility model are: after the ends of the bellows body are plugged into each other, they are further sealed by the sealing ring, and the gap is completely blocked by the sealing assembly and the locking assembly, so that the bellows as a whole has a better sealing effect; the socket and the plug can be quickly plugged in and positioned to prevent misalignment during the bellows transfer; the bellows body is made of MPP material, which has good heat resistance and corrosion resistance, ensuring the service life of the bellows body. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural sectional view of the utility model;

[0018] Figure 2 It is a partial cross-sectional view of the utility model;

[0019] Figure 3 It is another partial cross-sectional view of the utility model;

[0020] Figure 4 It is an assembly cross-sectional view of the utility model;

[0021] In the figure, there are a bellows body 1, a reinforcement layer 11, a corrugated outer wall 2, a corrugated inner wall 3, a supporting cavity 4, a socket 5, a socket 51, a slot 52, a plug 6, an outer ring body 61, an inner ring body 62, a limit strip 63, a limit groove 64, a limit protrusion 65, an insert 66, a clamping thread 67, a sealing ring 7, a sealing assembly 8, a sealing strip 81, a locking assembly 9, a locking hoop 91, and a locking edge 92. DETAILED DESCRIPTION

[0022] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0023] like Figure 1-4 As shown, a new type of high heat dissipation and corrosion-resistant MPP double-walled corrugated pipe includes a plurality of bellows bodies 1 connected one by one. The bellows body 1 has an integrally formed corrugated outer wall 2 and a corrugated inner wall 3. The corrugated structure enables the bellows body 1 to have a strong pressure resistance. A support cavity 4 is formed between the corrugated outer wall 2 and the corrugated inner wall 3. A socket 5 is provided at one end of the bellows body 1 and a plug 6 adapted to the socket 5 is provided at the other end. A sealing ring 7 is provided at the plug 6, and the gap between the plug 6 and the socket 5 is blocked by the sealing ring 7. A sealing component 8 is provided between the sealing ring 7 and the socket 5 to provide additional sealing torque. A locking component 9 is provided on the outside of the end of the bellows body 1 for axial locking and fixing to ensure that the locking torque of the sealing component 8 is fully transmitted to the sealing ring 7.

[0024] Specifically, each support cavity 4 is annular and extends circumferentially along the bellows body 1. The support cavities 4 are equidistantly arranged along the axial direction of the bellows body 1 and are relatively independent. The corrugated outer wall 2 and the corrugated inner wall 3 between adjacent support cavities 4 are connected as a whole, and the connection separates the support cavities 4. The independently arranged support cavities 4 have sufficient support strength and play a certain buffering role against external impact.

[0025] In depth, the socket 5 closes the support cavity 4 at the end of the corrugated pipe body 1, and plays a closing role on the support cavity 4 at the end, including a socket 51 clamped and fixed between the corrugated outer wall 2 and the corrugated inner wall 3, the socket 51 has a slot 52 opposite to the plug 6, and the inner and outer sides of the socket 51 are respectively provided with corrugated surfaces for the corrugated outer wall 2 and the corrugated inner wall 3 to fit. The socket 51 is fixed in the support cavity 4 as a whole and is limited by the arc surface of the support cavity 4.

[0026] Furthermore, the plug 6 clamps and fixes the end of the bellows body 1, including an outer ring body 61 that fits the outer side of the corrugated outer wall 2 and an inner ring body 62 that fits the inner side of the corrugated inner wall 3, and a limiting component is provided between the outer ring body 61, the inner ring body 62 and the bellows body 1. The limiting component realizes the circumferential limiting of the inner ring body 62 and the outer ring body 61, and at the same time applies sufficient positioning torque to the end of the bellows body 1.

[0027] Furthermore, unlike conventional limiting structures, the limiting assembly in the present application includes a limiting strip 63 and a limiting groove 64 that are arranged between the outer ring body 61 and the inner ring body 62 and are slidably plugged into each other. The limiting strip 63 and the limiting groove 64 are centrally symmetrically arranged relative to the plug 6. The side of the outer ring body 61 opposite to the inner ring body 62 is provided with a limiting protrusion 65 embedded in the bellows body 1. When the outer ring body 61 and the inner ring body 62 are slidably plugged into each other, the limiting protrusion 65 is then pressed against the bellows body 1.

[0028] In addition, the plug 6 has an insert sleeve 66 inserted into the slot 52, and a corresponding limiting step surface is provided at the root of the insert sleeve 66. A sealing ring 7 is provided at the end of the insert sleeve 66, and a mutually meshing clamping thread 67 is provided between the insert sleeve 66 and the slot 52. The plug 6 is locked and fixed to the socket 5 by rotating the insert sleeve 66, and the sealing ring 7 is deformed by the extrusion.

[0029] At the same time, in order to further improve the sealing effect of the sealing ring 7, the sealing assembly 8 includes a sealing strip 81 arranged at the bottom of the slot 52, the sealing strip 81 is concentrically distributed and presses against the sealing ring 7. The sealing strip 81 increases the contact area between the sealing ring 7 and the slot 52.

[0030] It can be seen that the locking assembly 9 adopts a conventional clamp structure, which includes symmetrically arranged locking hoops 91, which are clamped and fixed with locking edges 92 arranged on the outside of the socket 5 and the plug 6. The locking hoop 91 applies a certain pre-tightening force to the socket 5 and the plug 6 to ensure the fitting and sealing effect of the internal sealing assembly 8.

[0031] Obviously, the bellows body 1 is made of MPP material, which has good electrical insulation, high heat deformation temperature and strong impact resistance, which can effectively extend the overall service life of the bellows body 1 and has a good anti-corrosion effect on internal pipelines and fluids.

[0032] Preferably, a reinforcement layer 11 made of LDPE is provided inside the main body 1 of the corrugated pipe. The reinforcement layer 11 has good sealing properties and can further improve the sealing effect of the inner side of the main body 1 of the corrugated pipe to prevent leakage.

[0033] To sum up, the principle of this embodiment is that the bellows body 1 is provided with sufficient supporting torque by the supporting cavity 4, the adjacent bellows body 1 end transitions are connected by the locking assembly 9, and a sealing ring 7 and an additional sealing assembly 8 are arranged inside the connection, which has a higher sealing effect under the pre-tightening force of the locking assembly 9.

[0034] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0035] Although this article uses more terms such as bellows body 1, reinforcement layer 11, corrugated outer wall 2, corrugated inner wall 3, support cavity 4, socket 5, socket 51, slot 52, plug 6, outer ring body 61, inner ring body 62, limit strip 63, limit groove 64, limit convex point 65, insert 66, clamping thread 67, sealing ring 7, sealing assembly 8, sealing strip 81, locking assembly 9, locking hoop 91, locking edge 92, etc., it does not exclude the possibility of using other terms. The use of these terms is only to more conveniently describe and explain the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.

Claims

1. A novel high heat dissipation and corrosion resistant MPP double-walled corrugated pipe, comprising a corrugated pipe body (1), wherein the corrugated pipe body (1) has an integrally formed corrugated outer wall (2) and a corrugated inner wall (3), characterized in that: A supporting cavity (4) is formed between the corrugated outer wall (2) and the corrugated inner wall (3); a socket (5) is provided at one end of the bellows body (1) and a plug (6) adapted to the socket (5) is provided at the other end; a sealing ring (7) is provided at the plug (6); a sealing component (8) is provided between the sealing ring (7) and the socket (5); and a locking component (9) is provided on the outer side of the end of the bellows body (1).

2. According to claim 1, a new type of high heat dissipation and corrosion-resistant MPP double-wall corrugated pipe is characterized in that: The support cavity (4) is annular and extends circumferentially along the bellows body (1); the support cavities (4) are equidistantly arranged axially along the bellows body (1); and the corrugated outer wall (2) and the corrugated inner wall (3) between adjacent support cavities (4) are connected as a whole.

3. According to claim 2, a new type of high heat dissipation and corrosion-resistant MPP double-wall corrugated pipe is characterized in that: The socket (5) comprises a socket (51) clamped and fixed between the corrugated outer wall (2) and the corrugated inner wall (3), the socket (51) having a slot (52) opposite to the plug (6), and corrugated surfaces for the corrugated outer wall (2) and the corrugated inner wall (3) to fit are respectively arranged on the inner and outer sides of the socket (51).

4. According to claim 2, a new type of high heat dissipation and corrosion-resistant MPP double-wall corrugated pipe is characterized in that: The plug (6) comprises an outer ring body (61) fitted to the outside of the corrugated outer wall (2) and an inner ring body (62) fitted to the inside of the corrugated inner wall (3), and a limiting component is provided between the outer ring body (61), the inner ring body (62) and the corrugated tube body (1).

5. According to claim 4, a new type of high heat dissipation and corrosion-resistant MPP double-wall corrugated pipe is characterized in that: The limiting assembly comprises a limiting strip (63) and a limiting groove (64) which are arranged between the outer ring body (61) and the inner ring body (62) and are slidably plugged into each other. The limiting strip (63) and the limiting groove (64) are arranged centrally symmetrically with respect to the plug (6). A limiting protrusion (65) embedded in the bellows body (1) is provided on the side of the outer ring body (61) opposite to the inner ring body (62).

6. The novel high heat dissipation and corrosion resistant MPP double-wall corrugated pipe according to claim 4 is characterized in that: The plug (6) comprises an insert sleeve (66) inserted into the slot (52), the sealing ring (7) is arranged at the end of the insert sleeve (66), and a mutually meshing clamping thread (67) is arranged between the insert sleeve (66) and the slot (52).

7. The novel high heat dissipation and corrosion resistant MPP double-wall corrugated pipe according to claim 6 is characterized in that: The sealing assembly (8) comprises a sealing strip (81) arranged at the bottom of the slot (52); the sealing strip (81) is distributed in a concentric shape and is pressed against the sealing ring (7).

8. The novel high heat dissipation and corrosion resistant MPP double-wall corrugated pipe according to claim 1 is characterized in that: The locking assembly (9) comprises symmetrically arranged locking hoops (91), and the locking hoops (91) are clamped and fixed with locking edges (92) arranged on the socket (5) and the outer side of the plug (6).

9. The novel high heat dissipation and corrosion resistant MPP double-wall corrugated pipe according to claim 1 is characterized in that: The bellows body (1) is made of MPP material.

10. The novel high heat dissipation and corrosion resistant MPP double-wall corrugated pipe according to claim 1 is characterized in that: A reinforcement layer (11) made of LDPE material is arranged on the inner side of the corrugated pipe body (1).

Images