Anti-impact PVC (polyvinyl chloride) pipe

Abstract

The utility model discloses an anti-impact PVC pipe which comprises an outer pipe body, a buffer layer is arranged on the inner wall of the outer pipe body in a sleeved mode, an inner pipe is arranged on the inner wall of the buffer layer in a sleeved mode, a plurality of annular buffer grooves are evenly distributed in the outer wall of the outer pipe body in the axial direction, and a plurality of annular protruding limiting blocks are arranged on the surface of the outer side of the buffer layer in the axial direction. A plurality of groups of metal connecting rods are arranged between the buffer layer and the inner pipe in a surrounding manner in the axial direction, and the surface of the inner pipe is sleeved with a reset spring; the inclined springback supporting structure composed of the reset spring and the metal connecting rod can provide effective shock resistance and springback supporting force in multiple directions. When the PVC pipe is impacted in any direction, the reset spring which is obliquely arranged can respond quickly and store energy through compression, the reset spring releases energy after impact to enable the whole device to quickly recover to the original shape and position, normal operation and structural integrity of a pipeline system are guaranteed, and impact resistance and rebound resilience of the PVC pipe are greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of PVC pipe technology, and in particular to an impact-resistant PVC pipe. Background Technology

[0002] PVC pipes are made by hot-pressing polyvinyl chloride resin with stabilizers, lubricants, etc. They are the earliest plastic pipes developed and applied. PVC pipes have strong corrosion resistance, are easy to bond, are inexpensive, and are hard. They are used in wastewater, chemicals, heating and cooling liquids, food, ultrapure liquids, mud, gases, compressed air, and vacuum systems. However, existing PVC pipes do not have impact resistance during the manufacturing process, making them easily damaged by external impacts during use.

[0003] For example, the impact-resistant PVC pipe disclosed in the authorization announcement number CN216915064U only has multiple layers of materials to improve its impact resistance, but does not solve the problem of guiding the impact force and the direction of impact from the structure. When faced with a large impact force, it often suffers from problems such as being unable to rebound and having poor deformation adaptability due to excessive deformation.

[0004] Therefore, we propose an impact-resistant PVC pipe. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing an impact-resistant PVC pipe.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An impact-resistant PVC pipe includes an outer pipe body, a buffer layer sleeved on the inner wall of the outer pipe body, an inner pipe sleeved on the inner wall of the buffer layer, multiple annular buffer grooves evenly distributed along the axial direction on the outer wall of the outer pipe body, connecting grooves on both sides of the outer pipe body, connecting pieces fixedly mounted on the surface of the connecting grooves, several annular protruding limiting blocks arranged along the axial direction on the outer surface of the buffer layer, multiple sets of metal connecting rods arranged axially around the buffer layer and the inner pipe, and a return spring sleeved on the surface of the inner pipe. It is worth noting that the outer pipe body should be made of PVC material with a certain toughness and surface roughness, the inner pipe body should be made of PVC material with a certain flexibility and smoothness, the depth of the buffer grooves should be less than one-third of the thickness of the outer pipe body, and the outer surface of the inner pipe body should have a through hole reserved for installing the metal connecting rods, while the buffer layer, being a rubber-like resilient material, does not need to have a through hole reserved.

[0008] As a further improvement of this utility model: the buffer groove and the limiting block are fitted together accordingly. The buffer groove deforms and bends the outer tube by means of impact force, and squeezes the limiting blocks on both sides to make the buffer layer deform accordingly. It is worth noting that the buffer groove should be made of a material with a certain elasticity, such as rubber.

[0009] As a further embodiment of this utility model: the connecting piece engages with the connecting groove and is fitted with an outer tube body on the outside; the surface of the connecting piece is provided with several threaded holes; the connecting piece and the outer tube body are heat-fused together and fixedly sealed.

[0010] As a further improvement of this utility model: the width of the buffer groove is greater than the depth of the buffer groove, and it engages with the limiting block.

[0011] As a further improvement of this utility model: the metal connecting rod should have elastic recovery capability and penetrate through the center of the reset spring. The two ends of the metal connecting rod are fixed to the inner wall of the buffer layer and the outer wall of the inner tube. It is worth noting that the metal connecting rod should be made of a material with metal resilience, such as spring steel.

[0012] As a further embodiment of this utility model: the reset spring and the metal connecting rod are inclined, and multiple sets of metal connecting rods are distributed and arranged outward along the center of the tube axis.

[0013] As a further improvement of this utility model, the buffer layer should have a certain degree of elasticity and its thickness should be less than that of the outer tube.

[0014] Compared with the prior art, this utility model provides an impact-resistant PVC pipe with the following advantages:

[0015] 1. In this utility model, the buffer groove of the outer tube and the limiting block of the buffer layer cooperate with each other, which not only enhances the connection stability between the two, but also guides the deformation direction of the tube during the impact, so that the tube can bend and deform evenly along the groove direction, avoiding breakage due to excessive local deformation. At the same time, this structure increases the contact area between the buffer layer and the outer tube, improving energy transfer and buffering efficiency.

[0016] 2. This utility model features an inclined rebound support structure composed of a return spring and a metal connecting rod, which can provide effective impact resistance and rebound support in multiple directions. When subjected to impact from any direction, the inclined return spring responds quickly and stores energy through compression. After the impact, the return spring releases energy, allowing the entire device to quickly return to its original shape and position, ensuring the normal operation and structural integrity of the pipeline system and greatly improving the impact resistance and rebound performance of the pipe assembly.

[0017] The parts of this device not covered herein are the same as or can be implemented using existing technologies. This utility model has a simple structure and is easy to operate. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of an impact-resistant PVC pipe proposed in this utility model;

[0019] Figure 2 This is a side cross-sectional view of an impact-resistant PVC pipe proposed in this utility model.

[0020] Figure 3 This is a schematic diagram of the structure for applying reaction force to a metal connecting rod and a return spring in an impact-resistant PVC pipe, as proposed in this utility model.

[0021] Figure 4 This is a schematic diagram of the engagement structure of the buffer groove and the limiting block of an impact-resistant PVC pipe proposed in this utility model.

[0022] In the diagram: 1. Outer tube; 2. Buffer layer; 3. Inner tube; 4. Buffer groove size limit; 5. Connecting groove; 6. Connecting piece; 7. Limiting block; 8. Metal connecting rod; 9. Return spring; 10. Threaded hole. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] Example: An impact-resistant PVC pipe, such as Figure 1 - Figure 4As shown, the device includes an outer tube 1, a buffer layer 2 sleeved on the inner wall of the outer tube 1, an inner tube 3 sleeved on the inner wall of the buffer layer 2, multiple annular buffer grooves 4 evenly distributed along the axial direction on the outer wall of the outer tube 1, connecting grooves 5 on both sides of the outer tube 1, connecting pieces 6 fixedly installed on the surface of the connecting grooves 5, several annular protruding limiting blocks 7 arranged along the axial direction on the outer surface of the buffer layer 2, multiple sets of metal connecting rods 8 arranged axially around the buffer layer 2 and the inner tube 3, and a return spring 9 sleeved on the surface of the inner tube 3. The buffer grooves 4 of the outer tube 1 and the limiting blocks 7 of the buffer layer 2 cooperate with each other and engage in the inner layer of the whole device. This not only enhances the connection stability between the two, but also guides the deformation direction of the tube during the impact, so that the pressure is not concentrated, forming a bending effect and rebounding, so that the tube can bend and deform evenly along the groove direction, avoiding breakage due to excessive local deformation.

[0026] like Figure 1 - Figure 4 As shown, the buffer groove 4 and the limiting block 7 are correspondingly fitted together. The buffer groove 4 deforms and bends the outer tube 1 by means of impact force, and squeezes the limiting blocks 7 on both sides to make the buffer layer 2 deform accordingly. The connecting piece 6 is engaged with the connecting groove 5 and the outer tube 1 is sleeved on the outside. Several threaded holes are opened on the surface of the connecting piece 6. The connecting piece 6 and the outer tube 1 are heat-fused together and fixedly sealed. The width of the buffer groove 4 is greater than the depth of the buffer groove 4 and is engaged with the limiting block 7.

[0027] like Figure 1 - Figure 3 As shown, the metal connecting rod 8 should have elastic recovery capability and pass through the center of the return spring 9. Both ends of the metal connecting rod 8 are fixed to the inner wall of the buffer layer 2 and the outer wall of the inner tube 3. The return spring 9 and the metal connecting rod 8 are inclined, and multiple sets of metal connecting rods 8 are distributed outwards along the tube axis. The buffer layer 2 should have a certain elasticity and its thickness should be less than the thickness of the outer tube 1. The inclined rebound support structure composed of the return spring 9 and the metal connecting rod 8 can provide effective impact resistance and rebound support force in multiple directions. When subjected to impact from any direction, the multiple inclined return springs 9 can respond quickly and store energy through compression. After the impact, the return springs 9 release energy, allowing the entire device to quickly return to its original shape and position. Furthermore, the inclined return springs, arranged in a ring, can form mutual auxiliary support, creating pressure on the rebounding outer tube 1 and the buffer inner tube 3.

[0028] Working Principle: When subjected to external impact, the impact force first acts on the outer tube. The outer tube 1 deforms along the buffer groove 4 on its outer wall, transferring part of the impact force to the buffer layer 2. The buffer layer 2 absorbs and disperses some of the energy using the elastic deformation of its rubber material. Simultaneously, the deformation of the buffer layer 2 also compresses the return spring 9, which is compressed and stores elastic potential energy. Due to the inclined arrangement of the return spring 9 and the metal connecting rod 8 in multiple directions, the tube assembly receives effective support and energy absorption in all directions. When the impact force disappears, the spring releases the stored elastic potential energy, pushing the buffer layer 2 and the outer tube 1 back to their original shape, thus enabling the entire tube assembly to achieve impact resistance and rebound.

[0029] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An impact-resistant PVC pipe, comprising an outer pipe body (1), characterized in that, The outer tube (1) is fitted with a buffer layer (2) on its inner wall, and an inner tube (3) is fitted on the inner wall of the buffer layer (2). The outer wall of the outer tube (1) is evenly distributed with multiple annular buffer grooves (4) along the axial direction. The outer tube (1) is provided with connecting grooves (5) on both sides. Connecting pieces (6) are fixedly provided on the surface of the connecting grooves (5). Several annular protruding limiting blocks (7) are provided on the outer surface of the buffer layer (2) along the axial direction. Multiple sets of metal connecting rods (8) are arranged around the buffer layer (2) and the inner tube (3) along the axial direction. A reset spring (9) is fitted on the surface of the inner tube (3).

2. The impact-resistant PVC pipe according to claim 1, characterized in that, The buffer groove (4) is fitted into the limiting block (7) in a corresponding manner. The buffer groove (4) deforms and bends the outer tube (1) by means of impact force, and squeezes the limiting blocks (7) on both sides to make the buffer layer (2) deform accordingly.

3. The impact-resistant PVC pipe according to claim 1, characterized in that, The connecting piece (6) engages with the connecting groove (5) and is fitted with an outer tube (1). The surface of the connecting piece (6) has several threaded holes (10). The connecting piece (6) and the outer tube (1) are heat-fused together and fixedly sealed.

4. The impact-resistant PVC pipe according to claim 3, characterized in that, The width of the buffer groove (4) is greater than the depth of the buffer groove (4), and it engages with the limiting block (7).

5. The impact-resistant PVC pipe according to claim 4, characterized in that, The metal connecting rod (8) should have elastic recovery capability and pass through the center of the reset spring (9). The two ends of the metal connecting rod (8) are fixed to the inner wall of the buffer layer (2) and the outer wall of the inner tube (3).

6. The impact-resistant PVC pipe according to claim 5, characterized in that, The reset spring (9) and the metal connecting rod (8) are inclined, and multiple sets of metal connecting rods (8) are distributed outward from the center of the tube axis.

7. The impact-resistant PVC pipe according to claim 6, characterized in that, The buffer layer (2) should have a certain elasticity and its thickness should be less than that of the outer tube (1).

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