Lightweight pvdf pipe

Abstract

This utility model discloses a lightweight PVDF pipe, comprising a pipe body, a first reinforcing part slidably mounted on the outside of the pipe body, and a second reinforcing part movably mounted on the outside of the first reinforcing part. Limiting parts are also provided at both ends of the pipe body. The pipe body includes a first tube body with uniformly distributed grooves on its outer wall. The first reinforcing part includes a second tube body slidably mounted on the outer wall of the first tube body. Uniformly distributed inserts are provided on the inner wall of the second tube body, and these inserts are inserted into the grooves and slidably mounted. The first reinforcing part slides with the grooves on the outer wall of the first tube body via wedge-shaped inserts on the inner wall of the second tube body. The guiding effect of the wedge-shaped inserts simplifies the alignment process, eliminating the need to install components one by one; assembly can be completed simply by pushing along the axial direction. The second reinforcing part is installed by screwing on internal and external threads. Compared to the traditional method of assembling semi-ring reinforcing plates one by one, this significantly shortens the assembly time.

Description

Technical Field

[0001] This utility model relates to the field of PVDF pipe technology, specifically a lightweight PVDF pipe. Background Technology

[0002] PVDF pipe, or polyvinylidene fluoride pipe, is a high-performance plastic pipe made from polyvinylidene fluoride resin through a special extrusion or injection molding process. VDF pipe has extremely high chemical inertness to most acids, alkalis, salts, and many organic solvents, and can resist the corrosion of various chemical substances. Therefore, it is particularly suitable for chemical wastewater treatment, acid and alkali liquid transportation, and other scenarios. At the same time, it has excellent UV resistance and is not prone to aging when exposed to sunlight for a long time, which can maintain the long-term stability and service life of the pipeline.

[0003] A search revealed a patent with publication number CN223294405U, which proposes a lightweight PVDF pipe that addresses the problem of thick PVDF pipe walls and low lightweighting. The pipe includes a pipe body with an external groove on its outer side. Reinforcing ribs are symmetrically installed on the upper and lower sides of the external groove. During operation, the external groove on the outer wall of the pipe body and the symmetrically installed reinforcing ribs enhance the lightweight design of the pipe and provide reinforcement. Furthermore, external reinforcing components can be installed at equal intervals inside the external groove to improve the reinforcement effect.

[0004] In the aforementioned prior art, the main structure of the external reinforcing component requires the semi-ring reinforcing plates to be installed one by one on the reinforcing ribs. The assembly process is cumbersome and time-consuming, which seriously restricts the assembly efficiency and delays the overall project schedule. Utility Model Content

[0005] The purpose of this section is to outline some aspects of the embodiments of this utility model and to briefly introduce some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be used to limit the scope of this utility model.

[0006] In view of the problems existing in the above and / or existing lightweight PVDF pipes, this utility model is proposed.

[0007] To solve the above-mentioned technical problems, according to one aspect of the present invention, the present invention provides the following technical solution: A lightweight PVDF pipe includes a pipe body, a first reinforcing part slidably installed on the outside of the pipe body, a second reinforcing part movably installed on the outside of the first reinforcing part, and limiting parts provided at both ends of the pipe body.

[0008] As a preferred embodiment of the lightweight PVDF pipe of this utility model, the main body of the pipe includes a first pipe body, and the outer wall of the first pipe body is provided with uniformly distributed grooves.

[0009] As a preferred embodiment of the lightweight PVDF pipe of this utility model, the first reinforcing part includes a second pipe body that can be slidably assembled on the outer wall of the first pipe body. The inner wall of the second pipe body is provided with uniformly distributed inserts, and the inserts are inserted into sliding grooves and slidably assembled.

[0010] As a preferred embodiment of the lightweight PVDF pipe described in this utility model, the outer wall of the second pipe body is provided with external threads.

[0011] As a preferred embodiment of the lightweight PVDF pipe of this utility model, the second reinforcing part includes a third pipe body movably installed on the outer wall of the second pipe body, and the inner wall of the third pipe body is provided with an internal thread, and the internal thread is threadedly engaged with the external thread.

[0012] As a preferred embodiment of the lightweight PVDF pipe of this utility model, the first reinforcing part includes a clamping ring sleeved on the outer wall of the first pipe body, and uniformly distributed insert rods are provided on the outer wall of the clamping ring. The third pipe body has uniformly distributed slots on both sides, and the slots are adapted to the shape of the insert rods.

[0013] As a preferred embodiment of the lightweight PVDF pipe described in this utility model, the clamping ring and the first pipe body are interference fit.

[0014] As a preferred embodiment of the lightweight PVDF pipe described in this utility model, the insert is configured with a wedge-shaped structure.

[0015] Compared with the prior art, the beneficial effects of this utility model are: The first reinforcing part slides into the groove on the outer wall of the first tube through a wedge-shaped insert on the inner wall of the second tube. The guiding effect of the wedge-shaped insert simplifies the alignment process. There is no need to install the components one by one. Assembly can be completed by pushing along the axial direction. The second reinforcing part is installed by screwing on the internal and external threads. Compared with the traditional semi-ring reinforcing plate, which is assembled one by one, the assembly time can be effectively shortened. The second tube has an external thread that is evenly distributed along the outer wall, serving as both a threaded connection and a reinforcing rib. This thread can evenly distribute external forces in both the circumferential and axial directions, improving its resistance to bending and tension, and preventing localized weakness. The third tube, after being screwed in, wraps around the second tube, forming a double PVDF material reinforcement layer that enhances the structural strength. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and detailed embodiments. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them: Figure 1 This is a schematic diagram of the overall structure of a lightweight PVDF pipe according to the present invention; Figure 2 This is a schematic diagram of the external thread position structure of a lightweight PVDF pipe according to this utility model; Figure 3 This is an exploded view of the structure of a lightweight PVDF pipe according to this utility model; Figure 4 This is a schematic diagram of the limiting part structure of a lightweight PVDF pipe according to the present invention; Figure 5 This is a cross-sectional view of the pipe structure of a lightweight PVDF pipe according to this utility model.

[0017] In the diagram: 1. Pipe body; 2. First reinforcing part; 3. Limiting part; 4. Second reinforcing part; 5. First pipe body; 6. Second pipe body; 7. External thread; 8. Insert block; 9. Slide groove; 10. Third pipe body; 11. Internal thread; 12. Pressure ring; 13. Insert rod; 14. Slot. Detailed Implementation

[0018] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0019] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views showing the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, in actual manufacturing, the three-dimensional spatial dimensions of length, width, and depth should be included.

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0021] Example 1 Please see Figures 1-5 This utility model provides a technical solution: A lightweight PVDF pipe includes a pipe body 1, which serves as the core channel for conveying the medium. The pipe body 1 is made of PVDF material, possessing excellent chemical inertness and UV resistance, making it suitable for conveying chemical wastewater and acid / alkali liquids. A first reinforcing part 2 is slidably installed on the outside of the pipe body 1 to initially enhance the structural strength. The first reinforcing part 2 can be quickly assembled along the outer wall of the pipe body 1, avoiding the cumbersome process of installing traditional reinforcing components one by one. A second reinforcing part 4 is movably installed on the outside of the first reinforcing part 2 to further enhance the strength. The double reinforcing structure ensures the overall bending and tensile resistance of the pipe. Limiting parts 3 are also provided at both ends of the pipe body 1 to limit the displacement of the first reinforcing part 2, preventing the first reinforcing part 2 from sliding along the pipe axis during use.

[0022] The main body 1 of the pipe includes a first pipe body 5 for conveying the medium. The first pipe body 5 is a hollow tubular structure with several evenly distributed grooves 9 on its outer wall. The grooves 9 extend axially along the first pipe body 5 to provide a guide trajectory for the sliding assembly of the first reinforcing part 2. The first reinforcing part 2 includes a second pipe body 6 that can be slidably assembled on the outer wall of the first pipe body 5. The second pipe body 6 is also made of PVDF material, which is compatible with the material of the first pipe body 5 to ensure the overall structural stability. Several evenly distributed inserts 8 are integrally formed on the inner wall of the second pipe body 6. The inserts 8 are designed with a wedge shape. The wedge design can reduce the frictional resistance during sliding and enhance the fit with the grooves 9 after assembly, preventing the second pipe body 6 from radially shifting. The inserts 8 are inserted into the grooves 9 and slidably assembled. Through the cooperation of the inserts 8 and the grooves 9, the second pipe body 6 can be quickly slidably installed along the first pipe body 5.

[0023] The outer wall of the second tube body 6 is integrally formed with an external thread 7. The external thread 7 can not only serve as a threaded structure for connecting the second reinforcing part 4, but also as a reinforcing rib. The external thread 7 is evenly distributed along the outer wall of the second tube body 6, which can uniformly improve the bending resistance and tensile resistance of the tube body 1 in both circumferential and axial directions, avoiding the problem of local weakness caused by uneven distribution of traditional reinforcing ribs. The second reinforcing part 4 includes a third tube body 10 movably installed on the outer wall of the second tube body 6. The inner wall of the third tube body 10 is provided with an internal thread 11. The internal thread 11 is threadedly engaged with the external thread 7 of the second tube body 6. The assembly of the second reinforcing part 4 can be completed by threading, which is convenient and the connection is stable.

[0024] The first reinforcing part 2 also includes a clamping ring 12 sleeved on the outer wall of the first tube body 5. The clamping ring 12 and the first tube body 5 are in an interference fit. The interference fit can ensure that the clamping ring 12 fits tightly against the outer wall of the first tube body 5 without any loose gaps. Several evenly distributed insert rods 13 are integrally formed on the outer wall of the clamping ring 12. Several evenly distributed slots 14 are opened on both sides of the third tube body 10. The slots 14 are adapted to the shape of the insert rods 13. When the third tube body 10 is screwed to the designated position, the clamping ring 12 is sleeved on the first tube body 5 and pushed so that the insert rods 13 are inserted into the slots 14 of the third tube body 10. This can restrict the circumferential rotation of the third tube body 10 and prevent the threaded fit from loosening during long-term use.

[0025] In use, first, according to the length of the pipe body 1 and the requirements of the usage scenario, prepare the first reinforcing part 2, the second reinforcing part 4 and the limiting part 3 of the appropriate specifications. Place the first pipe body 5 (the core of the pipe body 1) horizontally, take out the second pipe body 6 (the core component of the first reinforcing part 2), and align the insert 8 on the inner wall of the second pipe body 6 with the sliding groove 9 on the outer wall of the first pipe body 5. Since the insert 8 has a wedge-shaped structure, no precise calibration is required during the alignment process. The wedge-shaped inclined surface can guide the insert 8 to slide smoothly into the sliding groove 9. Push the second pipe body 6 along the axial direction of the first pipe body 5 until the second pipe body 6 covers the area of ​​the first pipe body 5 that needs to be reinforced. If multiple sets of first reinforcing parts 2 need to be stacked for reinforcement, simply repeat the above steps and slide the additional second pipe bodies 6 into the sliding groove 9 in sequence. The end faces of adjacent second pipe bodies 6 can be attached without additional fixing, making the operation convenient.

[0026] Then, the limiting part 3 is taken and aligned with the openings at both ends of the first tube body 5. Pressure is applied to make the limiting part 3 form an interference fit with the inner wall of the first tube body 5. The tightness of the interference fit ensures that the limiting part 3 is firmly fixed at both ends of the first tube body 5 and will not fall off due to vibration of the conveying medium or collision of external forces. At the same time, the end face of the limiting part 3 contacts both ends of the second tube body 6, restricting the second tube body 6 from sliding along the axial direction of the first tube body 5, and preventing the first reinforcing part 2 from shifting and causing the reinforcement to fail during long-term use.

[0027] If the conveying scenario requires higher pipe strength, a second reinforcing part 4 can be further assembled: Take out the third pipe body 10, align the internal thread 11 on the inner wall of the third pipe body 10 with the external thread 7 on the outer wall of the second pipe body 6, and rotate the third pipe body 10 clockwise. Through the threaded engagement, the third pipe body 10 screws along the outer wall of the second pipe body 6 and advances. During this process, the external thread 7 of the second pipe body 6 not only serves as a connecting structure but also enhances the bending resistance of the second pipe body 6 through the rigidity of the thread teeth. The screwing of the third pipe body 10 further encloses the second pipe body 6, forming... With double reinforcement layers, after the third tube 10 is screwed on to cover the area to be reinforced, take the clamping ring 12 and align it with the end of the first tube 5 and put it on. Since the clamping ring 12 and the first tube 5 are interference fit, a certain pressure needs to be applied to make the clamping ring 12 fit tightly against the outer wall of the first tube 5. At the same time, ensure that the insertion rod 13 on the clamping ring 12 is aligned with the slot 14 on the side end of the third tube 10. Push the clamping ring 12 to make the insertion rod 13 fully inserted into the slot 14, restrict the circumferential rotation of the third tube 10, prevent the threads from loosening, and ensure the long-term stability of the second reinforcement part 4.

[0028] After all assembly is completed, the lightweight PVDF pipe can be connected to the conveying system. The first pipe body 5 serves as the medium channel. The second pipe body 6 of the first reinforcing part 2 provides initial reinforcement through the cooperation of the insert block 8 and the slide groove 9. The external thread 7 uniformly improves the bending and tensile resistance. The third pipe body 10 of the second reinforcing part 4 forms secondary reinforcement through the threaded cooperation. The limiting part 3 and the clamping ring 12 respectively restrict axial and circumferential displacement. The overall structure achieves both lightweight (no need for thick pipe walls) and ensures uniform and stable strength.

[0029] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A lightweight PVDF pipe, characterized in that, The pipe body (1) includes a first reinforcing part (2) which is slidably installed on the outside of the pipe body (1), and a second reinforcing part (4) which is movably installed on the outside of the first reinforcing part (2). Limiting parts (3) are also provided at both ends of the pipe body (1).

2. The lightweight PVDF pipe according to claim 1, characterized in that, The main body of the pipe (1) includes a first pipe body (5), and the outer wall of the first pipe body (5) is provided with uniformly distributed grooves (9).

3. The lightweight PVDF pipe according to claim 2, characterized in that, The first reinforcing part (2) includes a second tube (6) that can be slidably mounted on the outer wall of the first tube (5). The inner wall of the second tube (6) is provided with evenly distributed inserts (8), and the inserts (8) are inserted into the sliding grooves (9) and slidably mounted.

4. The lightweight PVDF pipe according to claim 3, characterized in that, The second tube (6) has an external thread (7) on its outer wall.

5. A lightweight PVDF pipe according to claim 3, characterized in that, The second reinforcing part (4) includes a third tube (10) movably installed on the outer wall of the second tube (6). The inner wall of the third tube (10) is provided with an internal thread (11), and the internal thread (11) is threadedly engaged with the external thread (7).

6. A lightweight PVDF pipe according to claim 5, characterized in that, The first reinforcing part (2) includes a clamping ring (12) sleeved on the outer wall of the first tube (5). The clamping ring (12) has evenly distributed insert rods (13) on its outer wall. The third tube (10) has evenly distributed slots (14) on both sides, and the slots (14) are adapted to the shape of the insert rods (13).

7. A lightweight PVDF pipe according to claim 6, characterized in that, The clamping ring (12) and the first tube (5) are interference fit.

8. A lightweight PVDF pipe according to claim 3, characterized in that, The insert (8) is configured as a wedge.

Images