CN212178116U - Polyethylene-polypropylene composite winding pipe - Google Patents

Abstract

The utility model relates to a technical field of tubular product, more specifically relates to a compound winding pipe of polyethylene-polypropylene, including the tubular product main part and locate the socket at tubular product main part both ends and the bellmouth of multiple size, the tubular product main part includes polypropylene layer, adhesive linkage and polyethylene layer, the adhesive linkage bonds between polypropylene layer and polyethylene layer, and the coaxial setting of bellmouth of multiple size just all is connected with the tubular product main part, and the socket of tubular product main part is connected with the bellmouth of adjacent tubular product main part, the bellmouth is equipped with seal structure. The utility model has high joint strength between the polypropylene layer and the polyethylene layer, and can effectively improve the rigidity of the composite winding pipe; the bellmouths with various sizes are suitable for connecting the pipe main bodies with the same size or different sizes, and the operation is simple and convenient and the application range is wide; the sealing structure can effectively prevent water seepage and water leakage.

Description

Polyethylene-polypropylene composite winding pipe

Technical Field

The utility model relates to a technical field of tubular product, more specifically relates to a compound winding pipe of polyethylene-polypropylene.

Background

The polyethylene winding pipe is a main product of the current plastic sewage pipe with an oversized diameter, and is widely applied to municipal drainage and sewage engineering. According to different production processes of products, the products are divided into three types, namely type A, type B and type C, wherein when the type B and type C pipes are produced, polypropylene corrugated pipes need to be wound outside the polyethylene pipes to play a role in supporting frameworks of the polyethylene pipes. However, polyethylene and polypropylene are different polymer materials and have poor compatibility, and the polypropylene and the polyethylene in the pipe have low bonding strength and are in a relatively separated state, so that polypropylene only plays a role of supporting in the polyethylene winding pipe, the contribution to the rigidity of the pipe is very small, and the waste of materials and the increase of the cost are caused.

Although many patents in china disclose polyethylene-polypropylene composite pipes, hot melt adhesives are used to bond the polyethylene and polypropylene to prevent separation of the polyethylene from the polypropylene. However, in these disclosed solutions: on one hand, the connection between the composite pipes with different sizes usually needs to adopt an adapter, the two ends of the adapter are respectively connected with the composite pipes with different sizes for twice connection, the diameter of the composite pipe is large, the operation is complex, and the time and the labor are consumed; on one hand, the joint of the composite pipe is not provided with a sealing structure, so that the phenomena of water leakage and water seepage at the joint of the composite pipe are easy to occur.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome not enough among the prior art, provide a compound winding pipe of polyethylene-polypropylene, can avoid the influence of separation to joint strength between polypropylene and polyethylene, be applicable to the connection between the multiple size winding pipe, and the junction has better sealing performance.

In order to solve the technical problem, the utility model discloses a technical scheme is:

the utility model provides a compound winding pipe of polyethylene-polypropylene, includes the tubular product main part and locates the socket at tubular product main part both ends and the bellmouth of multiple size, the tubular product main part includes polypropylene layer, adhesive linkage and polyethylene layer, the adhesive linkage bonds between polypropylene layer and polyethylene layer, and the coaxial setting of bellmouth of multiple size just all is connected with the tubular product main part, and the socket of tubular product main part is connected with the bellmouth of adjacent tubular product main part, the bellmouth is equipped with seal structure.

The polyethylene-polypropylene composite winding pipe of the utility model is provided with the bonding layer between the polypropylene layer and the polyethylene layer, which can increase the bonding strength between the polypropylene layer and the polyethylene layer, and the polypropylene layer has great contribution to the rigidity of the pipe; the bellmouths with various sizes are connected to one end of the pipe main body, so that the pipe main body can be suitable for connection of pipe main bodies with the same size or different sizes, and the pipe main body is simple and convenient to operate and wide in application range; the socket is provided with the sealing structure to play a role in sealing the joint of the socket and the spigot, so that water seepage and water leakage can be effectively prevented.

Further, polypropylene layer, adhesive linkage and polyethylene layer from inside to outside range upon range of setting, the polypropylene layer is the inlayer pipe, the polyethylene layer is outer pipe. A cavity is arranged in the inner layer pipe, and water flows; the polypropylene layer as the inner layer pipe can play a role of a supporting framework for the outer layer pipe; the outer layer pipe can be arranged on the periphery of the outer layer pipe in a tubular shape to form a composite straight pipe, and can also be arranged on the periphery of the outer layer pipe in a columnar shape to form a composite corrugated pipe.

Furthermore, the polypropylene layer is provided with a convex rib along the axial direction of the pipe body, and the polyethylene layer is provided with a groove along the axial direction of the pipe body. The convex ribs are matched with the grooves, so that the binding force between the polyethylene layer and the polypropylene layer can be further increased, and the structural stability of the composite winding pipe is improved.

Further, the inner wall of the inner layer pipe is uniformly coated with an anti-corrosion layer. The anti-corrosion layer is arranged, so that the corrosion of water on the inner wall of the winding pipe can be avoided, and the service life of the composite winding pipe is prolonged.

Further, the tubular product main part includes first pipe and second pipe, first pipe is the polyethylene pipe, the second pipe includes from inside to outside range upon range of polypropylene layer, adhesive linkage and the polyethylene layer that sets up, the second pipe twines in first pipe periphery. The second pipe plays a role of reinforcing the ribbed pipe, and the bonding layer is arranged between the polypropylene layer and the polyethylene layer in the second pipe, so that the bonding performance between the polypropylene layer and the polyethylene layer can be improved; the polyethylene layer on the outer layer of the second pipe and the first pipe are made of the same polyethylene material, and the joint of the first pipe and the second pipe can be well fused.

Further, the second pipe is spirally wound around the outer periphery of the first pipe. The second pipe is arranged in a spiral mode, so that the processing is convenient, and the appearance is attractive.

Further, the inner wall of the first pipe is uniformly coated with an anti-corrosion layer. The anti-corrosion layer is arranged, so that the corrosion of water on the inner wall of the winding pipe can be avoided, and the service life of the composite winding pipe is prolonged.

Furthermore, the bellmouth includes the first bellmouth, second bellmouth and the third bellmouth of coaxial setting with the tubular product main part, the first bellmouth is located the second bellmouth inboard, the third bellmouth is located the second bellmouth outside. The diameter of the second bell mouth is approximately equal to the pipe diameter of the winding pipes and is used for connecting the winding pipes with the same pipe diameter; the third bellmouth has a larger diameter and is used for connecting with the winding pipe with a larger pipe diameter; the diameter of the first bell mouth is smaller, and the first bell mouth is used for being connected with the winding pipe with the smaller pipe diameter.

Further, seal structure is including locating the seal groove of bellmouth and inlaying the sealing washer of locating in the seal groove. The embedding of the sealing ring and the sealing groove can improve the sealing performance between the winding pipes and can effectively prevent water seepage and water leakage.

Further, the sealing washer is for meeting water pressure expansion structure, the equipartition has tooth structure in the sealing washer inner circumference. The tooth structure is arranged to increase the connection stability between the two connection winding pipes, and the water swelling structure can effectively ensure the sealing performance of the joint of the two adjacent winding pipes.

Compared with the prior art, the beneficial effects of the utility model are that:

the polyethylene-polypropylene composite winding pipe has high bonding strength between the polypropylene layer and the polyethylene layer, and can effectively improve the rigidity of the composite winding pipe; the bellmouths with various sizes are suitable for connecting the pipe main bodies with the same size or different sizes, and the operation is simple and convenient and the application range is wide; the sealing structure can effectively prevent water seepage and water leakage.

Drawings

FIG. 1 is a schematic structural diagram I of a polyethylene-polypropylene composite winding pipe;

FIG. 2 is a schematic structural diagram II of a polyethylene-polypropylene composite winding pipe;

FIG. 3 is a schematic structural diagram I of another polyethylene-polypropylene composite winding pipe;

FIG. 4 is a schematic structural view II of another polyethylene-polypropylene composite winding pipe;

FIG. 5 is a schematic structural diagram of a socket of a polyethylene-polypropylene composite winding pipe;

in the drawings: 1-a tube body; 11-a polypropylene layer; 12-an adhesive layer; 13-a polyethylene layer; 14-a convex rib; 15-a groove; 16-an anti-corrosion layer; 17-a first tube; 18-a second tube; 2-a socket; 3-a socket; 31-a first socket; 32-a second socket; 33-a third socket; 4-a sealing structure; 41-sealing groove; 42-sealing ring.

Detailed Description

The present invention will be further described with reference to the following embodiments. Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; for a better understanding of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are the terms "upper", "lower", "left", "right", etc. indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of the description, but it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore the terms describing the positional relationship in the drawings are only for illustrative purposes and are not to be construed as limitations of the present patent, and those skilled in the art can understand the specific meanings of the terms according to specific situations.

Examples

Fig. 1 to 5 show an embodiment of the polyethylene-polypropylene composite winding pipe of the present invention, including a pipe main body 1 and sockets 2 at two ends of the pipe main body 1 and sockets 3 of various sizes, the pipe main body 1 includes a polypropylene layer 11, an adhesive layer 12 and a polyethylene layer 13, the adhesive layer 12 is adhered between the polypropylene layer 11 and the polyethylene layer 13, sockets 3 of various sizes are coaxially disposed and are all connected with the pipe main body 1, the socket 2 of the pipe main body 1 is connected with the socket 3 of the adjacent pipe main body 1, and the socket 3 is provided with a sealing structure 4. The adhesive layer 12 of this embodiment should be a hot melt adhesive with good compatibility between polyethylene and polypropylene, so that the polypropylene and the polyethylene winding pipe are fused into a whole.

In the implementation of the embodiment, the adhesive layer 12 is arranged between the polypropylene layer 11 and the polyethylene layer 13, so that the bonding strength between the polypropylene layer 11 and the polyethylene layer 13 can be increased, and the polypropylene layer 11 greatly contributes to the rigidity of the pipe; one end of the pipe body 1 is connected with sockets 3 with various sizes, so that the pipe body 1 can be suitable for connection of pipe bodies 1 with the same size or different sizes, and is simple and convenient to operate and wide in application range; the sealing structure 4 arranged on the socket 3 plays a role in sealing the joint of the socket 3 and the spigot 2, and can effectively prevent water seepage and water leakage.

In one embodiment, the polypropylene layer 11, the adhesive layer 12 and the polyethylene layer 13 are stacked from inside to outside, the polypropylene layer 11 is an inner pipe, and the polyethylene layer 13 is an outer pipe. The inner layer pipe of the embodiment is provided with a cavity, and water flows, and the polypropylene layer 11 as the inner layer pipe can play a role of a supporting framework for the outer layer pipe; the outer layer pipe can be arranged on the periphery of the outer layer pipe in a tubular shape to form a composite straight pipe, and can also be arranged on the periphery of the outer layer pipe in a columnar shape to form a composite corrugated pipe, as shown in fig. 1 and 2. In order to further improve the bonding stability between the polypropylene layer 11 and the polyethylene layer 13, in this embodiment, the polypropylene layer 11 is provided with a convex rib 14 along the axial direction of the pipe main body 1, the polyethylene layer 13 is provided with a groove 15 along the axial direction of the pipe main body 1, and the convex rib 14 is matched with the groove 15, so that the bonding force between the polyethylene layer 13 and the polypropylene layer 11 can be further increased; it should be noted that the arrangement of the ribs 14 and the grooves 15 is preferable for improving the structural stability of the composite winding pipe, and is not intended to be limiting. In order to prolong the service life of the composite winding pipe, the inner wall of the inner-layer pipe is uniformly coated with the anti-corrosion layer 16; however, this is preferable to avoid corrosion of the inner wall of the winding pipe by water, and is not intended to be restrictive.

In another embodiment, the tube material body 1 comprises a first tube 17 and a second tube 18, the first tube 17 is a polyethylene tube, the second tube 18 comprises a polypropylene layer 11, an adhesive layer 12 and a polyethylene layer 13 which are stacked from inside to outside, and the second tube 18 is wound on the periphery of the first tube 17; wherein the second pipe 18 plays a role of reinforcing a ribbed pipe, and the bonding layer 12 is arranged between the polypropylene layer 11 and the polyethylene layer 13 in the second pipe 18, so that the bonding performance between the polypropylene layer 11 and the polyethylene layer 13 can be improved; the polyethylene material of the same kind is used for the outer polyethylene layer 13 of the second tube 18 and the first tube 17, and the joint of the first tube 17 and the second tube 18 can be well fused, as shown in fig. 3 and 4. In order to obtain better workability and an aesthetic appearance, the second pipe 18 of the present embodiment is spirally wound around the outer periphery of the first pipe 17; in order to prolong the service life of the composite winding pipe, the inner wall of the first pipe 17 is uniformly coated with an anti-corrosion layer 16; however, this is preferable to avoid corrosion of the inner wall of the winding pipe by water, and is not intended to be restrictive.

In one embodiment, the socket 3 includes a first socket 31, a second socket 32 and a third socket 33, which are coaxially disposed with the tube body 1, the first socket 31 is disposed inside the second socket 32, and the third socket 33 is disposed outside the second socket 32. Specifically, the diameter of the second socket 32 is approximately equivalent to the pipe diameter of the winding pipe, and is used for connection between the winding pipes with the same pipe diameter; the third socket 33 has a larger diameter and is used for connecting with a winding pipe with a larger pipe diameter; the first socket 31 has a smaller diameter for connection with a smaller diameter wound pipe, as shown in fig. 5. The socket 3 and the socket 2 can be connected by adopting connection modes such as splicing, sleeve joint, clamping, threaded connection, external connection structure and the like; the socket 3 of the present embodiment may be formed integrally with the tube main body 1, or may be formed separately and then attached to the end of the tube main body 1.

In another embodiment, the sealing structure 4 includes a sealing groove 41 disposed on the socket 3 and a sealing ring 42 embedded in the sealing groove 41, and the sealing ring 42 is embedded in the sealing groove 41 during implementation, so as to improve the sealing performance between the winding pipes and effectively prevent water seepage and water leakage. In this embodiment, the sealing ring 42 is of a water pressure expansion structure, which can effectively ensure the sealing property at the joint of two adjacent winding pipes; the inner circumference of the sealing ring 42 is evenly provided with a tooth structure, so that the connection stability between the two connection winding pipes can be improved.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limitations to the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

1. The utility model provides a compound winding pipe of polyethylene-polypropylene, its characterized in that includes tubular product main part (1) and locates socket (2) and many sizes bellmouth (3) at tubular product main part (1) both ends, tubular product main part (1) includes polypropylene layer (11), adhesive linkage (12) and polyethylene layer (13), adhesive linkage (12) bond between polypropylene layer (11) and polyethylene layer (13), and bellmouth (3) coaxial setting of many sizes just all is connected with tubular product main part (1), and socket (2) and bellmouth (3) of adjacent tubular product main part (1) of tubular product main part (1) are connected, bellmouth (3) are equipped with seal structure (4).

2. The composite winding pipe of polyethylene-polypropylene according to claim 1, wherein the polypropylene layer (11), the adhesive layer (12) and the polyethylene layer (13) are laminated from inside to outside, the polypropylene layer (11) is an inner layer pipe, and the polyethylene layer (13) is an outer layer pipe.

3. The polyethylene-polypropylene composite winding pipe according to claim 2, wherein the polypropylene layer (11) is provided with a rib (14) along the axial direction of the pipe main body (1), and the polyethylene layer (13) is provided with a groove (15) along the axial direction of the pipe main body (1).

4. The polyethylene-polypropylene composite wound pipe according to claim 2, wherein the inner pipe wall is uniformly coated with an anti-corrosion layer (16).

5. The winding pipe of polyethylene-polypropylene composite according to claim 1, wherein the pipe body (1) comprises a first pipe (17) and a second pipe (18), the first pipe (17) is a polyethylene pipe, the second pipe (18) comprises a polypropylene layer (11), an adhesive layer (12) and a polyethylene layer (13) which are laminated from inside to outside, and the second pipe (18) is wound around the outer periphery of the first pipe (17).

6. The polyethylene-polypropylene composite winding pipe according to claim 5, wherein the second pipe (18) is spirally wound around the outer circumference of the first pipe (17).

7. The polyethylene-polypropylene composite wound pipe according to claim 5, wherein the inner wall of the first pipe (17) is uniformly coated with an anti-corrosion layer (16).

8. The winding pipe according to any one of claims 1 to 7, wherein the socket (3) comprises a first socket (31), a second socket (32) and a third socket (33) coaxially arranged with the pipe body (1), the first socket (31) is arranged inside the second socket (32), and the third socket (33) is arranged outside the second socket (32).

9. The PE-PP composite winding pipe according to claim 8, wherein the sealing structure (4) comprises a sealing groove (41) formed in the socket (3) and a sealing ring (42) embedded in the sealing groove (41).

10. The composite winding pipe of polyethylene-polypropylene according to claim 9, wherein the sealing ring (42) is of a water pressure expansion structure, and teeth are uniformly distributed on the inner circumference of the sealing ring (42).

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