Pressure-resistant PVC pipe

Abstract

This utility model proposes a pressure-resistant PVC pipe, relating to the field of PVC pipe technology. It includes an inner sleeve, with a heat insulation layer fitted around its periphery, and a pressure-resistant layer disposed outside the heat insulation layer. This pressure-resistant PVC pipe, by incorporating the pressure-resistant layer, allows for cushioning when the anti-slip layer is compressed, thanks to the grooves on its surface. The compressive force penetrates further into the anti-slip layer. Buffer balls within the buffer wrapping layer support the positions of the inner and outer isolation layers. Due to the internal buffer gap between the buffer balls and the buffer wrapping layer, the buffer balls cushion the inward indentation. The outer filling layer supports the outer isolation layer, improving the pressure resistance of the PVC pipe. Furthermore, when the baffle is subjected to force and indents inward, the compressive force is distributed across multiple receiving sleeves, preventing external pressure from being directly applied to the PVC pipe joints, thus enhancing the protection of the PVC pipe joints.

Description

Technical Field

[0001] This utility model relates to a PVC pipe, specifically a pressure-resistant PVC pipe, and belongs to the field of PVC pipe technology. Background Technology

[0002] PVC pipe is mainly composed of polyvinyl chloride, with other components added to enhance its heat resistance, toughness, and ductility. With the rapid development of underground power cable laying projects, higher requirements are being placed on cable conduits. Cable protection conduits are usually made of polyethylene (PE) material and are the most commonly used electrical insulation pipes for protecting wires and cables.

[0003] Most existing PVC pipes are buried underground. Because PVC pipes are flexible, they are prone to cracking when subjected to external pressure. This can damage the internal cables, affecting the use of the PVC pipes. Furthermore, the joints are often quite weak and can easily break due to excessive pressure, leading to cracks in certain areas.

[0004] Therefore, a pressure-resistant PVC pipe is proposed here. Summary of the Invention

[0005] This invention proposes a pressure-resistant PVC pipe that uses a buffer ball and an outer filling layer to support the external extrusion pressure, thereby improving the pressure resistance of the PVC outer pipe. Furthermore, the baffle can prevent external pressure from being applied directly to the PVC pipe joint.

[0006] This utility model is achieved through the following technical solution: a pressure-resistant PVC pipe, including an inner sleeve, an insulation layer sleeved around the outer periphery of the inner sleeve, a pressure-resistant layer disposed outside the insulation layer, the pressure-resistant layer including an inner isolation layer sleeved around the insulation layer, an outer isolation layer disposed outside the inner isolation layer, a set of buffer wrapping layers disposed between the inner and outer isolation layers, a plurality of buffer balls disposed inside the buffer wrapping layer to buffer external pressure, an outer sleeve sleeved around the outer isolation layer, and an anti-slip layer sleeved around the outer sleeve.

[0007] Furthermore, an inner buffer gap is left between the buffer ball and the buffer wrapping layer, and the inner buffer gap can isolate multiple buffer balls.

[0008] Furthermore, an outer filling layer is provided between the inner and outer isolation layers, and the outer filling layer can isolate the buffer wrapping layer from the buffer ball.

[0009] Furthermore, the inner and outer isolation layers are inserted into the outer filling layer on the side closest to each other, and the portions of the inner and outer isolation layers inserted into the outer filling layer are located on both sides of the buffer wrapping layer.

[0010] One side of the anti-slip layer is provided with a threaded sleeve that fits around the outer sleeve. A connecting threaded sleeve is threaded around the outer side of the threaded sleeve. A buffer assembly for protecting the PVC pipe joint is provided outside the connecting threaded sleeve. The buffer assembly includes a set of baffles provided outside the connecting threaded sleeve. A set of storage sleeves is fixed on the side of each baffle near the connecting threaded sleeve. A compression spring is fixed on the inner side wall of the storage sleeve. A connecting sleeve is fixed at the end of the compression spring away from the storage sleeve, and the connecting sleeve is fixed around the connecting threaded sleeve.

[0011] Furthermore, the receiving sleeve is slidably fitted around the outer periphery of the connecting sleeve, and the inner diameter of the connecting sleeve is larger than the outer diameter of the compression spring.

[0012] Furthermore, a set of grooves are uniformly formed on the outer side of the anti-slip layer, and the outer diameter of the anti-slip layer is smaller than the inner diameter of the connecting threaded sleeve.

[0013] This utility model provides a pressure-resistant PVC pipe, which has the following beneficial effects:

[0014] This pressure-resistant PVC pipe, by setting a pressure-resistant layer, can buffer the deformation of the anti-slip layer when it is squeezed by the grooves on the surface of the anti-slip layer. The squeezing force continues to penetrate into the interior through the anti-slip layer. The buffer ball inside the buffer wrapping layer supports the position of the inner and outer isolation layers. Since there is an inner buffer gap between the buffer ball and the buffer wrapping layer, the buffer ball can buffer when it is concave inward. The outer filling layer supports the outer isolation layer, thus improving the pressure resistance of the PVC pipe.

[0015] This pressure-resistant PVC pipe, after the PVC pipe is connected, rotates the connecting threaded sleeve to move the connecting threaded sleeve to the interface between the threaded sleeve and the outside. When the baffle is subjected to force and indents inward, the compressive force is distributed to multiple storage sleeves. The compression spring pushes the storage sleeves to move the baffle away from the connecting threaded sleeve, avoiding the direct application of external pressure to the PVC pipe connection, thereby improving the protection of the PVC pipe connection. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a front view of the structure of the inner and outer isolation layers in this utility model;

[0018] Figure 3 This is a three-dimensional structural cross-sectional view of the outer isolation layer and the outer filling layer in this utility model;

[0019] Figure 4This is a three-dimensional structural diagram of the buffer component in this utility model.

[0020] Explanation of reference numerals in the attached figures

[0021] 1. Inner sleeve; 2. Insulation layer; 3. Anti-slip layer;

[0022] 4. Compression-resistant layer; 41. Inner isolation layer; 42. Outer isolation layer; 43. Buffer wrapping layer; 44. Buffer ball; 45. Inner buffer gap; 46. Outer filling layer; 47. Outer tube;

[0023] 5. Threaded sleeve; 51. Connecting threaded sleeve;

[0024] 6. Buffer assembly; 61. Baffle; 62. Storage sleeve; 63. Connecting sleeve; 64. Compression spring. Detailed Implementation

[0025] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this application.

[0026] Please see Figures 1-4 The present invention proposes the following implementation scheme: a pressure-resistant PVC pipe, including an inner sleeve 1, an insulation layer 2 sleeved around the outer periphery of the inner sleeve 1, a pressure-resistant layer 4 disposed outside the insulation layer 2, the pressure-resistant layer 4 including an inner isolation layer 41 sleeved around the insulation layer 2, an outer isolation layer 42 disposed outside the inner isolation layer 41, a set of buffer wrapping layers 43 disposed between the inner isolation layer 41 and the outer isolation layer 42, a plurality of buffer balls 44 disposed inside the buffer wrapping layer 43 to buffer external pressure, an outer sleeve 47 sleeved around the outer isolation layer 42, and an anti-slip layer 3 sleeved around the outer sleeve 47.

[0027] Please refer to this carefully. Figure 3 An inner buffer gap 45 is left between the buffer ball 44 and the buffer wrapping layer 43, and the inner buffer gap 45 can isolate multiple buffer balls 44.

[0028] An outer filling layer 46 is provided between the inner isolation layer 41 and the outer isolation layer 42, and the outer filling layer 46 can isolate the buffer wrapping layer 43 from the buffer ball 44.

[0029] The inner isolation layer 41 and the outer isolation layer 42 are inserted into the outer filling layer 46 on their respective sides, and the portions of the inner isolation layer 41 and the outer isolation layer 42 inserted into the outer filling layer 46 are located on both sides of the buffer wrapping layer 43.

[0030] In the above scheme, the compressive force continues to penetrate into the interior through the anti-slip layer 3. The buffer ball 44 inside the buffer wrapping layer 43 supports the position of the inner isolation layer 41 and the outer isolation layer 42. Since there is an inner buffer gap 45 between the buffer ball 44 and the buffer wrapping layer 43, the buffer ball 44 is buffered when it is concave inward, thereby improving the pressure resistance of the PVC pipe.

[0031] Please refer to this carefully. Figure 1 , Figure 2 and Figure 4 One side of the anti-slip layer 3 is provided with a threaded sleeve 5 that fits around the outer sleeve 47. A connecting threaded sleeve 51 is threaded around the outer side of the threaded sleeve 5. A buffer assembly 6 for protecting the PVC pipe joint is provided outside the connecting threaded sleeve 51. The buffer assembly 6 includes a set of baffles 61 provided outside the connecting threaded sleeve 51. A set of receiving sleeves 62 is fixed on the side of each baffle 61 near the connecting threaded sleeve 51. A compression spring 64 is fixed on the inner wall of the receiving sleeve 62. A connecting sleeve 63 is fixed on the end of the compression spring 64 away from the receiving sleeve 62, and the connecting sleeve 63 is fixed around the connecting threaded sleeve 51.

[0032] Please refer to this carefully. Figure 4 The receiving sleeve 62 is slidably sleeved around the connecting sleeve 63, and the inner diameter of the connecting sleeve 63 is larger than the outer diameter of the compression spring 64.

[0033] In the above scheme, when the baffle 61 is subjected to force and indents inward, the extrusion force is distributed to multiple storage sleeves 62. The compression spring 64 pushes the storage sleeves 62, so that the baffle 61 is away from the connecting threaded sleeve 51, thus avoiding the external pressure being directly applied to the PVC pipe connection.

[0034] Please refer to this carefully. Figure 1 and Figure 3 The anti-slip layer 3 has a set of grooves evenly distributed on its outer surface, and the outer diameter of the anti-slip layer 3 is smaller than the inner diameter of the connecting threaded sleeve 51.

[0035] In the above scheme, when the anti-slip layer 3 is compressed, the grooves on the surface of the anti-slip layer 3 can be used to buffer the deformation of the anti-slip layer 3.

[0036] In use, this invention features: by providing a pressure-resistant layer 4, when the anti-slip layer 3 is compressed, the grooves on the surface of the anti-slip layer 3 can buffer the deformation of the anti-slip layer 3. The compressive force continues to penetrate inward through the anti-slip layer 3. The buffer balls 44 inside the buffer wrapping layer 43 support the positions of the inner isolation layer 41 and the outer isolation layer 42. Because there is an inner buffer gap 45 between the buffer balls 44 and the buffer wrapping layer 43, the buffer balls 44 buffer when they are concave inward. The outer filling layer 46 further supports the buffer. The outer isolation layer 42 provides support and improves the pressure resistance of the PVC pipe. After the PVC pipe is connected, the connecting threaded sleeve 51 is rotated to move the connecting threaded sleeve 51 to the interface between the threaded sleeve 5 and the outside. When the baffle 61 is subjected to force and indents inward, the compressive force is distributed to multiple storage sleeves 62. The compression spring 64 pushes the storage sleeves 62 to move the baffle 61 away from the connecting threaded sleeve 51, thus preventing external pressure from being directly applied to the PVC pipe connection and improving the protection of the PVC pipe connection.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A pressure-resistant PVC pipe, comprising an inner sleeve (1), characterized in that: The inner sleeve (1) is fitted with a heat insulation layer (2) on its periphery. The heat insulation layer (2) is provided with a pressure-resistant layer (4) on its exterior. The pressure-resistant layer (4) includes an inner isolation layer (41) fitted around the heat insulation layer (2). An outer isolation layer (42) is provided outside the inner isolation layer (41). A set of buffer wrapping layers (43) is provided between the inner isolation layer (41) and the outer isolation layer (42). Multiple buffer balls (44) are provided inside the buffer wrapping layer (43) to buffer external pressure. An outer sleeve (47) is fitted around the outer isolation layer (42). An anti-slip layer (3) is fitted around the outer sleeve (47). One side of the anti-slip layer (3) is provided with a threaded sleeve (5) that is sleeved around the outer sleeve (47). A connecting threaded sleeve (51) is threaded around the outer side of the threaded sleeve (5). A buffer assembly (6) for protecting the PVC pipe joint is provided outside the connecting threaded sleeve (51). The buffer assembly (6) includes a set of baffles (61) provided outside the connecting threaded sleeve (51). A set of storage sleeves (62) is fixed on the side of each baffle (61) near the connecting threaded sleeve (51). A compression spring (64) is fixed on the inner wall of the storage sleeve (62). A connecting sleeve (63) is fixed on the end of the compression spring (64) away from the storage sleeve (62). The connecting sleeve (63) is fixed around the connecting threaded sleeve (51).

2. The pressure-resistant PVC pipe according to claim 1, characterized in that: An inner buffer gap (45) is left between the buffer ball (44) and the buffer wrapping layer (43), and the inner buffer gap (45) can isolate multiple buffer balls (44).

3. The pressure-resistant PVC pipe according to claim 1, characterized in that: An outer filling layer (46) is filled between the inner isolation layer (41) and the outer isolation layer (42), and the outer filling layer (46) can isolate the buffer wrapping layer (43) from the buffer ball (44).

4. The pressure-resistant PVC pipe according to claim 1, characterized in that: The inner isolation layer (41) and the outer isolation layer (42) are inserted into the interior of the outer filling layer (46) on the side that is close to each other, and the parts of the inner isolation layer (41) and the outer isolation layer (42) inserted into the outer filling layer (46) are arranged on both sides of the buffer wrapping layer (43).

5. A pressure-resistant PVC pipe according to claim 1, characterized in that: The storage sleeve (62) is slidably sleeved around the outer periphery of the connecting sleeve (63), and the inner diameter of the connecting sleeve (63) is larger than the outer diameter of the compression spring (64).

6. The pressure-resistant PVC pipe according to claim 1, characterized in that: The anti-slip layer (3) has a set of grooves evenly distributed on its outer side, and the outer diameter of the anti-slip layer (3) is smaller than the inner diameter of the connecting threaded sleeve (51).

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