Low-cost ultra-high molecular weight four-layer co-extrusion polyethylene pipe

Abstract

The utility model relates to the technical field of polymer pipes, in particular to a low-cost ultra-high molecular weight four-layer co-extrusion polyethylene pipe which comprises a straight pipe and a bent pipe, one end of the straight pipe and one end of the bent pipe are fixedly connected with first reinforcing discs, and the other end of the straight pipe and the other end of the bent pipe are fixedly connected with second reinforcing discs. The inner walls of the ends, corresponding to the second reinforcing discs, of the straight pipe and the bent pipe are in threaded connection with guide ends, and the two ends of the inner walls of the ends, corresponding to the first reinforcing discs, of the straight pipe and the bent pipe are movably connected with buckles. According to the improved polyethylene pipe, the guide end and the buckle are connected in a clamped mode, the conical shape of the guide end can rapidly guide the guide end to be inserted into the corresponding pipe opening, the buckle is extruded to enable the spring to be compressed and slide to the notch, then the buckle is automatically reset and clamped, rapid preliminary splicing is achieved, and no matter straight pipes or bent pipes or straight pipes or bent pipes exist, the splicing efficiency is greatly improved. The connecting structure is particularly suitable for large-scale pipeline laying projects, and the construction period can be greatly shortened.

Description

TECHNICAL FIELD

[0001] The utility model relates to high polymer pipe material technical field, concretely to a low cost ultrahigh molecular weight four layer co -extrusion polyethylene pipe material. BACKGROUND

[0002] High polymer pipe material is the tubular product with hollow section for conveying fluid or as structural material made of high polymer material as main raw material, and common forming methods have extrusion forming, injection molding, blow molding and the like. Extrusion forming is that high polymer material is heated to melt state, is extruded into tubular through extruder, then is cooled and is shaped to obtain pipe material, and the density of high polymer material is much smaller than traditional materials such as metal and ceramic, and has many advantages such as corrosion resistance, insulation and the like, and is often used in many fields such as building, packaging, medical treatment and the like.

[0003] The inventor finds that the prior art has the following problems in the process of realizing the utility model: 1, the existing high polymer pipe material relies on professional equipment during installation, and the operation skill requirement of construction personnel is extremely high, and professional training is needed to get started, which increases construction labor cost and technical threshold, and the pipe material interface needs to be heated for a long time during hot melting and electric melting process, and it is necessary to wait for cooling and solidification after completing connection, and the overall installation process is slow, which seriously prolongs the construction period and increases the time cost and management cost in large-scale pipeline laying project; 2, once the pipe material is damaged, it needs to be cut and re-melted, and the process is complicated, and professional equipment and skilled technicians are needed to operate, so the maintenance difficulty is great. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a low cost ultrahigh molecular weight four layer co -extrusion polyethylene pipe material to solve the problems of relying on professional equipment and the operation skill requirement of construction personnel being extremely high in the above background art, and waiting for cooling and solidification after completing connection, and the overall installation process being slow. In order to realize the above-mentioned purpose, the utility model provides the following technical scheme: a low cost ultrahigh molecular weight four layer co -extrusion polyethylene pipe material, including straight pipe and elbow, one end of the straight pipe and the elbow is fixedly connected with first reinforcing disc, the other end of the straight pipe and the elbow is fixedly connected with second reinforcing disc, the inner wall of the one end of the straight pipe and the elbow corresponding to the second reinforcing disc is screw-connected with guide end, the inner wall of the two ends of the one end of the straight pipe and the elbow corresponding to the first reinforcing disc is movably connected with buckle, and the first reinforcing disc and the second reinforcing disc are connected through fastener.

[0005] Further preferably, the straight pipe and the elbow are both composed of multiple layers of composite materials, from inside to outside, respectively, polyethylene inner layer, polyethylene sandwich layer coated with anti-electric coating, polyurethane foam insulation layer and polyethylene outer layer coated with protective coating, and the surface of the outer layer is distributed with corrugated protruding structure.

[0006] Further preferably, the guide end is conical, and a slot for inserting and connecting the buckle is formed at both ends of the outer wall of the guide end, and the buckle is movably connected to the inner wall of the straight pipe and the elbow pipe through the spring, and the buckle is elastically reset through the spring.

[0007] Further preferably, the straight pipe is connected to another straight pipe through the cooperation of the guide end and the buckle, and the elbow pipe is connected to another elbow pipe through the cooperation of the guide end and the buckle.

[0008] Further preferably, the straight pipe and the elbow pipe are connected through the cooperation of the guide end and the buckle.

[0009] Further preferably, the fastener is composed of a screw and a hexagonal nut, and a circular slot for penetrating the screw is formed at equal angles on the surface of the first reinforcing disc and the second reinforcing disc, the hexagonal nut is threadedly connected to both ends of the screw, and a threaded slot is formed on the outer wall of the first reinforcing disc and the second reinforcing disc outwardly and extending from the same axial point on the outer side corresponding to each circular slot, and one end of the hexagonal nut is threadedly connected to the corresponding threaded slot.

[0010] Further preferably, the first reinforcing disc and the second reinforcing disc are made of the same material as the straight pipe and the elbow pipe, and the first reinforcing disc is provided with a groove in the form of a ring and covered with a rubber pad on the side abutting against the second reinforcing disc, and the second reinforcing disc is provided with a protrusion in the form of a ring and covered with a rubber pad on the side corresponding to the protrusion.

[0011] Compared with the prior art, the utility model has the advantages of:

[0012] In the utility model, the complex process of traditional hot melting and electric melting installation, which needs professional equipment and long-time heating and cooling waiting, is abandoned, the buckle is connected through the cooperation of the guide end and the buckle, the conical design of the guide end can quickly guide the insertion into the corresponding pipe opening, the buckle is automatically reset and connected after being compressed by the spring and sliding into the slot, the rapid preliminary splicing is realized, whether it is a straight pipe and a straight pipe, an elbow pipe and an elbow pipe, or a straight pipe and an elbow pipe, convenient connection can be realized, the construction efficiency is greatly improved, and the utility model is especially suitable for large-scale pipeline laying projects and can greatly shorten the construction period.

[0013] In this invention, traditional welded pipes require cutting and re-welding after damage, which is complex and affects surrounding pipes. With this pipe, when replacing the damaged part, it is only necessary to remove the fasteners between the first and second reinforcing discs, cut it near the guide end, push out the buckle from the inner wall of the guide end, remove the guide end, connect it to the new pipe body, and then reinstall it with the intact pipe according to the splicing steps. This significantly reduces maintenance difficulty and cost. The connection part achieves super strong stability through double protection. On the one hand, the guide end is tightly engaged with the buckle. On the other hand, the first and second reinforcing discs are connected by fasteners consisting of screws and hexagonal nuts. The hexagonal nuts are not only threaded to both ends of the screws, but also tightened to the corresponding threaded grooves on the outer wall of the reinforcing discs, forming a double threaded connection, which greatly enhances the firmness and stability of the connection. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the internal structure of the straight pipe of this utility model;

[0016] Figure 3 This is a schematic diagram of the guide end structure of this utility model;

[0017] Figure 4 This is a schematic diagram of the fastener structure of this utility model;

[0018] Figure 5 This is a schematic diagram of the internal structure of the bend in this utility model.

[0019] In the diagram: 1. Straight pipe; 2. Bend; 3. First reinforcing disc; 4. Second reinforcing disc; 5. Guide end; 6. Clip; 7. Fastener. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figures 1 to 5The utility model provides a technical scheme: a kind of low-cost ultrahigh molecular weight four-layer co-extrusion polyethylene pipe, including straight pipe 1 and elbow 2, the one end of straight pipe 1 and elbow 2 is fixedly connected with first reinforcing disc 3, the other end of straight pipe 1 and elbow 2 is fixedly connected with second reinforcing disc 4, the inner wall of straight pipe 1 and elbow 2 at the one end of corresponding arrangement second reinforcing disc 4 is all threadedly connected with guide end 5, the inner wall both ends of straight pipe 1 and elbow 2 at the one end of corresponding arrangement first reinforcing disc 3 is all movably connected with buckle 6, first reinforcing disc 3 and second reinforcing disc 4 are connected by fastener 7.

[0022] In the embodiment, as shown in Figure 1 Straight pipe 1 and elbow 2 are both composed of multiple layers of composite materials, which are polyethylene inner layer, polyethylene interlayer coated with anti-electric coating, polyurethane foam insulation layer and polyethylene outer layer coated with protective coating from inside to outside, and the surface of the outer layer is distributed with corrugated protruding structure; the polyethylene inner layer is smooth, which not only has good chemical stability to provide basic corrosion resistance for the pipe, but also has smaller friction when fluid flows in the pipeline, which can effectively reduce energy loss in fluid conveying process, reduce conveying cost, and impurities and dirt are not easy to adhere to the inner wall of the pipeline; the polyethylene interlayer coated with anti-electric coating can effectively prevent the generation and accumulation of static electricity, reduce the risk of fire or explosion caused by static electricity, and ensure the safe operation of the pipeline system; the polyurethane foam insulation layer can significantly reduce the heat exchange between the fluid in the pipeline and the external environment, which can effectively reduce heat loss and improve energy utilization efficiency for conveying hot water, hot oil and other fluids that need to maintain temperature; for the pipeline conveying low-temperature fluid, it can prevent external heat from entering to avoid the influence of fluid temperature rise on its properties; the corrugated protruding structure of the outer layer increases the structural strength of the pipe, improves the compression and bending resistance of the pipe under the premise of not increasing the overall weight of the pipe, so that it can withstand greater external force; during installation, the corrugated protruding structure increases the contact area and friction between the pipeline and the ground, which is not easy to roll or slide, facilitating installation operation of construction personnel, and improving the safety and efficiency of the installation process.

[0023] In the embodiment, as shown in Figure 1 , Figure 3 And Figure 4As shown, the guide end 5 is conical, and the outer wall of the guide end 5 is provided with a slot at both ends for inserting and connecting the buckle 6, and the buckle 6 is movably connected to the inner wall of the straight pipe 1 and the elbow pipe 2 through the spring, and the buckle 6 is elastically reset by the spring; the conical guide end 5 can make the buckle 6 slide smoothly along the conical outer wall during the insertion process due to the guide structure, avoiding problems such as jamming and collision caused by angle deviation or improper operation, and the guide end 5 is threadedly connected to the inner wall of the corresponding pipe body pipe opening, which can form a sealing line with the inner wall of the pipe opening to prevent fluid from leaking directly from the pipe opening.

[0024] In this embodiment, as shown in Figure 1 , Figure 3 and Figure 4 , the straight pipe 1 is connected with another straight pipe 1 through the cooperation of the guide end 5 and the buckle 6, and the elbow pipe 2 is connected with another elbow pipe 2 through the cooperation of the guide end 5 and the buckle 6; the connection mode of the guide end 5 and the buckle 6 can conveniently and quickly connect the straight pipe 1 with the straight pipe 1 and the elbow pipe 2 with the elbow pipe 2, making the assembly of the pipeline more flexible, and the pipeline system of different lengths and shapes can be quickly built according to the actual construction requirements, improving the construction efficiency. Compared with the traditional fusion method, which usually needs a certain time to heat and melt the pipe material interface, waiting for cooling and solidification, the construction speed is slow, and the fusion needs professional equipment and technical personnel to operate, which requires higher skills of the construction personnel. The clamping connection operation is relatively simple and does not require special professional skills, which can reduce the construction cost and labor requirement, and the clamping connection can be quickly completed, greatly shortening the construction time and improving the construction efficiency. Especially in large-scale pipeline laying engineering, the advantage is more obvious.

[0025] In this embodiment, as shown in Figure 1 and Figure 5 , the straight pipe 1 and the elbow pipe 2 are connected through the guide end 5 and the buckle 6; during the pipeline laying process, the site construction conditions are often complex and changeable, and the pipeline direction needs to be adjusted according to the actual topography, building layout and other factors. The clamping connection mode of the guide end 5 and the buckle 6 of the straight pipe 1 and the elbow pipe 2 can be conveniently combined and adjusted to quickly adapt to different construction environments and pipeline laying requirements, improving the flexibility and adaptability of the pipeline system.

[0026] In this embodiment, as shown in Figure 4As shown, the fastener 7 is composed of a screw and a hexagonal nut, and the surfaces of the first reinforcing disc 3 and the second reinforcing disc 4 are equiangularly provided with circular grooves for penetrating the screw, the hexagonal nut is threadedly connected to both ends of the screw, and on the outer walls of the first reinforcing disc 3 and the second reinforcing disc 4, a threaded groove is outwardly and equicentrically provided on the outer side corresponding to each circular groove, and one end of the hexagonal nut is threadedly connected in the corresponding threaded groove; by penetrating the circular grooves on the surfaces of the first reinforcing disc 3 and the second reinforcing disc 4 with the screw, and threadedly connecting the hexagonal nut to both ends of the screw, the first reinforcing disc 3 and the second reinforcing disc 4 can be tightly connected together, and the one end of the hexagonal nut is further threadedly connected with the corresponding threaded groove, forming a double-threaded connection structure, which greatly enhances the firmness and stability of the connection, and ensures that the pipe material will not easily loosen during use due to external forces and other factors.

[0027] In this embodiment, as shown in Figure 1 、 Figure 3 and Figure 4 , the first reinforcing disc 3 and the second reinforcing disc 4 are made of the same material as the straight pipe 1 and the elbow pipe 2, and the first reinforcing disc 3 is provided with a ring-shaped groove on the side that is in close contact with the second reinforcing disc 4, and the groove is covered with a rubber pad, and the second reinforcing disc 4 is provided with a ring-shaped protrusion on one side that is in close contact with the first reinforcing disc 3, and the protrusion is covered with a rubber pad; the ring-shaped groove of the first reinforcing disc 3 and the ring-shaped protrusion of the second reinforcing disc 4 are in close contact with each other, and both are covered with rubber pads, and the fastener 7 is used to press the first reinforcing disc 3 and the second reinforcing disc 4 against each other to fill the gap, effectively preventing the leakage of gas, liquid and other media from the connection, greatly improving the sealing performance of the pipe connection part, ensuring the tightness of the pipeline system when conveying various fluids, and being suitable for scenes with strict sealing requirements.

[0028] The use method and advantages of the low-cost ultrahigh molecular weight four-layer co-extruded polyethylene pipe are as follows:

[0029] As shown in Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5As shown, first straight pipe 1 is modularly spliced by guide end 5 and buckle 6, when installing, one end of straight pipe 1 with guide end 5 is inserted into the pipe opening of another straight pipe 1 with buckle 6, the tapered surface of the front end of guide end 5 is in contact with the edge with arc surface of buckle 6, when pushing guide end 5, buckle 6 is extruded, the spring connected with one end of buckle 6 is compressed, until guide end 5 slides to the slot position, buckle 6 loses extrusion, resets under the action of spring and inserts into the slot of guide end 5, completes preliminary fixation, in special positions of pipeline laying, according to the actual situation of pipeline laying at construction points, the splicing between straight pipe 1 and elbow pipe 2 or between elbow pipes 2 themselves can be realized by using the same principle, that is, inserting guide end 5 into one end of the corresponding pipe with buckle 6, completing preliminary connection by the cooperation of guide end 5 and buckle 6, meeting different directions and layout requirements, after completing preliminary splicing, first reinforcing disc 3 and second reinforcing disc 4 are respectively located at two ends of the spliced pipe, the screw in fastener 7 is penetrated through the corresponding slot on the surface of first reinforcing disc 3 and second reinforcing disc 4, then hexagonal nuts are screwed on both ends of the screw, rotating the hexagonal nuts to make them tightly fit both ends of the screw, at the same time, the hexagonal nuts are in threaded connection with the corresponding threaded slots on the surface of first reinforcing disc 3 and second reinforcing disc 4, thereby realizing the final fastening of pipe installation and ensuring stable connection.

[0030] The basic principle, main characteristics and advantages of the utility model are shown and described above. The technical personnel in the industry should understand that the utility model is not limited by the above-mentioned embodiments, the above-mentioned embodiments and the description in the specification are only preferred examples of the utility model and are not used to limit the utility model, various changes and improvements of the utility model can be made without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed for protection. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. A low-cost ultra-high molecular weight four-layer co-extruded polyethylene pipe, comprising a straight pipe (1) and a bent pipe (2), characterized in that: One end of the straight pipe (1) and the bent pipe (2) are fixedly connected to a first reinforcing disc (3), and the other end of the straight pipe (1) and the bent pipe (2) are fixedly connected to a second reinforcing disc (4). The inner wall of the straight pipe (1) and the bent pipe (2) at the end corresponding to the second reinforcing disc (4) is threadedly connected to a guide end (5). The two ends of the inner wall of the straight pipe (1) and the bent pipe (2) at the end corresponding to the first reinforcing disc (3) are movably connected to a buckle (6). The first reinforcing disc (3) and the second reinforcing disc (4) are connected by a fastener (7).

2. The low-cost ultra-high molecular weight four-layer co-extruded polyethylene pipe according to claim 1, characterized in that: Both the straight pipe (1) and the bent pipe (2) are composed of multiple layers of composite materials. From the inside out, they are a polyethylene inner layer, a polyethylene interlayer coated with an anti-electric coating, a polyurethane foam insulation layer, and a polyethylene outer layer coated with a protective coating. The outer layer has a corrugated protrusion structure distributed on its surface.

3. The low-cost ultra-high molecular weight four-layer co-extruded polyethylene pipe according to claim 1, characterized in that: The guide end (5) is conical, and slots for inserting and connecting buckles (6) are opened through both ends of the outer wall of the guide end (5). The buckles (6) are movably connected to the inner walls of the corresponding straight pipe (1) and bent pipe (2) by springs. At the same time, the buckles (6) form an elastic reset structure by springs.

4. The low-cost ultra-high molecular weight four-layer co-extruded polyethylene pipe according to claim 1, characterized in that: The straight pipe (1) is engaged with another straight pipe (1) by the cooperation of the guide end (5) and the buckle (6), and the bent pipe (2) is engaged with another bent pipe (2) by the cooperation of the guide end (5) and the buckle (6).

5. The low-cost ultra-high molecular weight four-layer co-extruded polyethylene pipe according to claim 1, characterized in that: The straight pipe (1) and the bent pipe (2) are connected by a guide end (5) and a buckle (6).

6. The low-cost ultra-high molecular weight four-layer co-extruded polyethylene pipe according to claim 1, characterized in that: The fastener (7) consists of a screw and a hexagonal nut. The surfaces of the first reinforcing disc (3) and the second reinforcing disc (4) are provided with circular slots for the screw to pass through at equal angles. The hexagonal nut is threaded to both ends of the screw. On the outer walls of the first reinforcing disc (3) and the second reinforcing disc (4), corresponding to the outer side of each circular slot, threaded slots are provided extending outward from the same axial center point. At the same time, one end of the hexagonal nut is threaded to the corresponding threaded slot.

7. The low-cost ultra-high molecular weight four-layer co-extruded polyethylene pipe according to claim 1, characterized in that: The first reinforcing disc (3) and the second reinforcing disc (4) are made of the same material as the straight pipe (1) and the bent pipe (2). The first reinforcing disc (3) has an annular groove covered with a rubber pad on the side that is in contact with the second reinforcing disc (4). The second reinforcing disc (4) has an annular protrusion covered with a rubber pad on the corresponding side that is inserted and connected to it.

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