Pipe body with smooth inner surface and corrugated outer surface and drawing faucet

Abstract

The utility model provides a pipe body with a smooth inner surface and a corrugated outer surface. The pipe body is formed by spirally winding a co-extruded T-shaped material; the co-extrusion T-shaped material comprises a convex part and extension parts which are arranged at the bottom of the side edge of the convex part along the two sides of the width direction; and ribs are wrapped in the convex parts. The utility model further provides a drawing faucet, and the pipe body is used in the drawing faucet.

Description

TECHNICAL FIELD

[0001] The utility model relates to a pipe body, especially to a corrugated pipe. BACKGROUND

[0002] The inner and outer surfaces of the traditional corrugated pipe are uneven corrugations, which will occupy the space of the inner pipe and reduce the flow area. Moreover, the uneven inner surface has a large resistance to water flow, so the pipe diameter has to be enlarged to achieve the same flow, but the size of the pull-out pipe of the pull-out faucet cannot be enlarged due to the limitation of the installation hole, which results in a small flow of the pull-out faucet. SUMMARY

[0003] The utility model solves the main technical problem to provide a pipe body, reduce the resistance of the pipe wall to water flow and improve the flow of the pipe body.

[0004] In order to solve the above technical problems, the utility model provides a pipe body with a smooth inner surface and a corrugated outer surface, which is made of co-extruded T-shaped material by spiral winding; the co-extruded T-shaped material comprises an outer convex part and an extension part arranged at the bottom of the side of the outer convex part along the width direction of both sides; the outer convex part is wrapped with a rib.

[0005] In a preferred embodiment: when the co-extruded T-shaped material is spiral wound, the extension parts of the adjacent two turns of the co-extruded T-shaped material along the length direction of the pipe body overlap.

[0006] In a preferred embodiment: the pipe body is provided with a rubber coating layer or a film coating layer on the outer surface of the spiral wound T-shaped material.

[0007] In a preferred embodiment: the height of the extension parts of the adjacent two turns of the co-extruded T-shaped material along the length direction of the pipe body after overlapping is less than the height of the outer convex part.

[0008] In a preferred embodiment: the width of the outer convex part accounts for 40%-80% of the width of the co-extruded T-shaped material.

[0009] In a preferred embodiment: the thickness of the extension part accounts for 15%-80% of the thickness of the co-extruded T-shaped material.

[0010] In a preferred embodiment: the thickness of the rib accounts for 25%-80% of the thickness of the co-extruded T-shaped material.

[0011] In a preferred embodiment: the rib is a flat strip.

[0012] The utility model also provides a pull-out faucet which uses the pipe body as described above.

[0013] Compared with the prior art, the technical scheme of the utility model has the following beneficial effects:

[0014] The utility model provides a kind of pipe body of smooth inner surface and corrugated outer surface, solve the small flow caused by the corrugated face of the inner and outer of the conventional corrugated pipe.The inner surface of the pipe body is flat, the surface of other corrugated pipe is uneven, the resistance to water flow is smaller, so that the flow can be improved under the same pipe diameter;Or under the same flow, the pipe diameter can be made smaller, and the cooperation of faucet is more smooth. BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 It is the sectional view of pipe body in preferred embodiment of the utility model;

[0016] Fig. 2 It is the sectional view of co-extrusion T-shaped material in preferred embodiment of the utility model. DETAILED DESCRIPTION

[0017] In order to make the technical scheme and characteristics of the utility model more clear, the utility model is further explained in detail in the following with reference to drawings and specific examples, and it should be understood that these examples are only used to illustrate the utility model and not to limit the scope of the utility model, and after reading the utility model, various equivalent forms of the utility model modified by those skilled in the art all fall within the scope defined by the claims attached to the present application.

[0018] Reference Figs. 1-2 The embodiment provides a kind of pipe body of smooth inner surface and corrugated outer surface, which is formed by co-extrusion T-shaped material 1 spiral winding;The co-extrusion T-shaped material 1 includes an outer convex portion 11 and the extension portion 12 arranged at the side bottom of the outer convex portion 11 along the width direction both sides;The outer convex portion 11 is wrapped with rib 13.

[0019] The co-extrusion T-shaped material 1 is formed by simultaneously extruding the main body material and the rib 13 material into T-shaped material 1, and the rib 13 is completely wrapped by the main body material during the extrusion process, and before the T-shaped material 1 is cooled after leaving the mold, the T-shaped material 1 is spiral wound by rotating mold, so that the extension portion 12 of the T-shaped material 1 extruded later is overlapped on the extension portion 12 of the T-shaped material 1 extruded earlier.That is to say, when the co-extrusion T-shaped material 1 is spiral wound, the extension portion 12 of the adjacent two turns of the co-extrusion T-shaped material 1 along the length direction of the pipe body is overlapped, and the height of the overlapped extension portion 12 is less than the height of the outer convex portion 11, so that the outer wall of the pipe body presents a concave-convex spiral structure.The inner wall of the pipe body after molding is smooth, compared with the conventional concave-convex pipe three-section molding process, the process is more simple without winding rib 13 process, the production cost and the hidden danger of stratification of the pipe body are reduced, and the production efficiency and product quality are improved.

[0020] In the embodiment, a rubber coating or a film coating can be arranged on the outer surface of the T-shaped material 1 to further improve or increase the performance of the pipe body.

[0021] In addition, the width of the outward protruding portion 11 accounts for 40%-80% of the width of the co-extruded T-shaped material, and in the embodiment, the width is 50% of the width of the co-extruded T-shaped material. The thickness of the extending portion accounts for 15%-80% of the thickness of the co-extruded T-shaped material, and in the embodiment, the thickness of the extending portion is 1 / 3 of the thickness of the co-extruded T-shaped material. The thickness of the rib accounts for 25%-80% of the thickness of the co-extruded T-shaped material, and in the embodiment, the thickness of the rib is 7 / 12 of the thickness of the co-extruded T-shaped material.

[0022] In the embodiment, the rib 13 is in the shape of a flat strip, which can increase the proportion of the width of the rib 13 in the outward protruding portion 11, thereby increasing the supporting effect of the rib 13 on the external structure.

[0023] The pipe body described above solves the problem of small flow rate caused by the corrugated surfaces inside and outside the conventional corrugated pipe. The inner surface of the pipe body is flat, and the resistance to water flow is smaller than that of the uneven surface of other corrugated pipes, thereby increasing the flow rate under the same pipe diameter. Or, under the same flow rate, the pipe diameter can be made smaller, and the cooperation with the faucet is smoother. Therefore, the pipe body can be applied to the pull-out faucet, and the effect of increasing the flow rate can be achieved by replacing the pull-out pipe in the existing pull-out faucet.

[0024] The above is only one specific embodiment of the utility model, but the design concept of the utility model is not limited to this. Any non-essential modification of the utility model by using the concept is an act of infringing the protection scope of the utility model.

Claims

1. A pipe body having a smooth outer surface and a corrugated inner surface, characterized in that: The pipe body is formed by spiral winding of the co-extruded T-shaped material; the co-extruded T-shaped material comprises an outer convex portion and extension portions arranged at the bottom of the side edges of the outer convex portion along the width direction; the outer convex portion is wrapped with a rib.

2. A pipe body having a smooth inner surface and a corrugated outer surface according to claim 1, characterized in that: When the co-extruded T-shaped material is spiral wound, the extension portions of the co-extruded T-shaped material of adjacent two turns along the length direction of the pipe body are overlapped.

3. A pipe body having a smooth inner surface and a corrugated outer surface according to claim 1, characterized in that: The pipe body is provided with a rubber coating layer or a film coating layer on the outer surface of the spiral wound T-shaped material.

4. A pipe body having a smooth inner surface and a corrugated outer surface according to claim 2, wherein: The height of the overlapped extension portions of the co-extruded T-shaped material of adjacent two turns along the length direction of the pipe body is less than the height of the outer convex portion.

5. The pipe body having a smooth inner surface and a corrugated outer surface according to claim 1, wherein: The width of the outer convex portion accounts for 40%-80% of the width of the co-extruded T-shaped material.

6. The pipe body having a smooth inner surface and a corrugated outer surface according to claim 1, wherein: The thickness of the extension portion accounts for 15%-80% of the thickness of the co-extruded T-shaped material.

7. The pipe body having a smooth inner surface and a corrugated outer surface according to claim 1, wherein: The thickness of the rib accounts for 25%-80% of the thickness of the co-extruded T-shaped material.

8. The pipe body having a smooth inner surface and a corrugated outer surface according to claim 1, wherein: The rib is a flat strip.

9. A pull-out faucet characterized by The pipe body of any one of claims 1-8 is used.

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