droplet tube structure

Abstract

The present invention discloses a droplet tube structure comprising an inner tube and a penetration sleeve, wherein the inner tube serves to guide the movement of a liquid and has several water outlet holes extending through the tube wall of the inner tube, and the penetration sleeve is fitted onto the outer circumference of the inner tube, wherein each water outlet hole is configured with a predetermined inclination, and at least one thickened section is provided at the locations of the tube wall of the inner tube corresponding to the water outlet holes. The combination of the aforementioned components allows for the expected advantages, such as precise water regulation through the paths and inclinations of the water outlet holes.

Description

Field of the InventionThe present invention relates to the technical field of irrigation apparatus and, more particularly, to a droplet tube structure.Prior ArtThe structure of the droplet tube structure used for irrigation usually consists of an inner tube and a penetration sleeve surrounding the outer circumference of the inner tube, wherein a plurality of penetration holes pass vertically through the inner tube and the penetration sleeve is a braided fabric and has micro holes with a predetermined mesh width.In use, the liquid is introduced into the inner pipe at a predetermined pressure, whereby the liquid can flow along the extending direction of the inner pipe and during the flow process, the pressure is made to flow out of the penetration holes.The liquid flows through the penetration sleeve located on the outside of the inner tube and spreads and then seeps out through the micro holes of the penetration sleeve to evenly wet the soil and thus fulfil the purpose of irrigation.The droplet tube structure has the following defects: 1. all the penetration holes pass through the tube wall of the inner tube in the vertical direction. With such a structure, when the liquid flows in the inner pipe, it can easily flow out of the penetration holes on the shortest path, which easily leads to defects such as excessive water discharge; 2. when the diameter of the penetration holes is decreased to restrict the water discharge, the penetration holes may easily become clogged based on the above; 3. the thickness of the pipe wall of conventional inner pipes is uniform. The penetration holes through the perforated wall locally weaken the structural strength of the perforated wall. When the liquid passes through, the diameter of the penetration holes increases due to the pressure (hole widening), leading to defects such as water discharge over expectation; 4. based on the above, when the liquid moves along the inner pipe, the pressure of the liquid in the front portion (or near the source) is greater than the pressure in the rear portion over the entire length of the inner pipe. Further, when the penetration holes dispersed in the front portion of the inner pipe are widened, the amount of the liquid flowing to the end of the inner pipe is not sufficient, resulting in nonuniform irrigation; 5. the thickness of the pipe wall of conventional inner pipes is uniform, so that when the inner pipe is bent for some reason, the water flow often stops; 6. the micro holes of conventional penetration sleeves are only a single size and therefore cannot be properly adjusted to the requirements.Therefore, there is a need to further improve the conventional droplet tube structure with respect to both its inner tube and penetration sleeve.Object of the InventionThe object of the invention is to avoid the above-mentioned deficiencies in the prior art and to provide a droplet tube structure. Innovative structural design eliminates the deficiencies of the prior art.Technical SolutionTo achieve the above object, the present invention provides a droplet tube structure including an inner tube and a penetration sleeve, the inner tube serving to guide movement of a liquid and having a plurality of water outlet holes continuous through the tube wall of the inner tube, and the penetration sleeve being fitted on the outer periphery of the inner tube, a respective water outlet hole being configured with a predetermined inclination, and at least one thickened portion being provided at the locations of the tube wall of the inner tube corresponding to the water outlet holes. By the composition of the above components, the expected advantages such as precise water regulation through the paths and slopes of the water outlet holes can be obtained.Brief Description of the DrawingsFIG. 1 is a schematic three-dimensional, fragmentary sectional view of a preferred embodiment of the present invention; FIG. 2 is a schematic cross-sectional view of the embodiment according to the present invention; FIG. 3 is a schematic view of the penetration sleeve of the embodiment according to the present invention; FIG. 3A shows a first schematic partial view of the exemplary embodiment according to FIG. 3 ; FIG. 3B shows a second schematic partial view of the exemplary embodiment according to FIG. 3.DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTThe droplet tube structure according to the invention is described in detail below on the basis of an exemplary embodiment with reference to the figures. The constituent elements of the present invention mentioned in this embodiment are not necessarily to scale in terms of their proportions, dimensions and amount of deformation and displacement, but are only schematically illustrated. In the exemplary embodiment, identical and symmetrical components are represented by the same reference numerals. The following directional terms such as "front, rear, left, right, upper, lower, inside, and outside" in the description of the embodiment are illustrated according to the indicated direction in the figure, and should not be construed as limiting the present invention.Reference is made to Figs. 1, 2, 3, 3A and 3B, which show a droplet tube structure. It comprises an inner tube 10 and a penetration sleeve 20.The inner tube 10 serves to guide the movement of a liquid (not shown) and has a plurality of water outlet holes 12 and at least one thickened portion 14.Each water outlet hole 12 passes through the pipe wall on one side of the inner pipe 10 at a predetermined inclination. In the implementation, the inclination direction of each water discharge hole 12 is different from the flow direction of the liquid flowing in the inner pipe 10.The thickened portion 14 is provided at the locations of the tube wall of the inner tube 10 corresponding to the water outlet holes 12. The thickness of the tube wall of the inner tube 10 is partially increased to avoid widening of the water outlet holes 12. In the implementation, the thickened portion 14 is selectively disposed on the outer tube wall or on the inner tube wall of the inner tube 10. It is also possible to arrange it simultaneously both on the inner and on the outer tube wall of the inner tube 10.In order to facilitate the manufacture, the thickened portion 14 may have a continuous structure (e.g., continuously formed along the extending direction of the inner pipe 10) or a discontinuous structure (e.g., formed only along the peripheries of the water outlet holes 12).The penetration sleeve 20 is plugged onto the outer circumference of the inner tube 10. The inside and the outside of the penetration sleeve 20 are continuously connected to each other through the micro holes (no reference numeral) having a predetermined mesh width. In the implementation, the penetration sleeve 20 is a woven structure, wherein the weaving method is selected from among the twill weave, the plain weave, or a combination thereof. Here, the size of the rectangular micro holes 21 (FIG. 3B ) formed by the plain weave is smaller than the size of the diamond-shaped micro holes 22 (FIG. 3A ) formed by the twill weave.The above represents an introduction to the components and mounting methods of the droplet tube structure according to a preferred embodiment of the present invention. The operating features according to this preferred embodiment of the present invention will be described below.In use, liquid is introduced into the inner tube 10. When the liquid flows out through the water outlet holes 12, a part of the liquid flows out of the inner tube 10 through the water outlet holes 12, then is redistributed through the water outlet holes 12 and seeps out of the micro holes (no reference numeral) of the penetration sleeve 20, thereby uniformly humidifying the bottom.When the liquid flows out of the water outlet holes 12, the path of the liquid flowing from the inside of the inner pipe 10 to the outside of the inner pipe 10 is extended through the water outlet holes 12 that are inclined to prevent the amount of the liquid flowing out of the inner pipe 10 from exceeding the expected water discharge amount.Then, in the soil to be humidified, further distribution in various directions takes place through the micro holes of different meshes in the penetration sleeve 20, thus preventing excessive leakage of liquid and further increasing the utilization rate of the liquid.In the present invention, a structure having different thicknesses is formed on the entire tube wall of the inner tube 10 by the cooperation of the inner tube 10 with the thickened portion 14. When the inner tube 10 is bent, space still remains, so that the water flow does not stop.The foregoing description is only illustrative of a preferred embodiment of the invention and is not intended to limit the claims. All equivalent changes and modifications that can be made according to the description and drawings of the invention by a person skilled in the art fall within the scope of protection of the present invention.List of reference characters10 Inner tube 12 Water outlet hole 14 Thickened portion 20 Penetration sleeve 21 Rectangular micro hole 22 Diamond-shaped micro hole

Claims

A droplet tube structure comprising an inner tube (10) for guiding movement of a liquid; a penetration sleeve (20) fitted on the outer periphery of the inner tube (10) and having a plurality of micro holes; characterized in that the plurality of water outlet holes (12) each pass through the tube wall at a predetermined inclination on one side of the inner tube (10) and are arranged along the extending direction of the inner tube (10); and at least one thickened portion (14) provided at the locations of the tube wall of the inner tube (10) corresponding to the water outlet holes (12).The droplet tube structure according to claim 1, wherein the thickened portion (14) is disposed on the outer tube wall of the inner tube (10).The droplet tube structure according to claim 1, wherein the thickened portion (14) is disposed on the inner tube wall of the inner tube (10).The droplet tube structure of claim 1, wherein the penetration sleeve (20) is a tissue structure of twill weave.The droplet tube structure of claim 1, wherein the penetration sleeve (20) is a plain weave fabric structure.The droplet tube structure according to claim 1, wherein the penetration sleeve (20) is a woven fabric structure consisting of a combination of a twill weave and a plain weave.The droplet tube structure according to claim 1, wherein the penetration sleeve (20) is a woven fabric structure consisting of a combination of a twill weave and a plain weave, wherein the mesh width of the micro holes formed by the plain weave is larger than the mesh width of the micro holes formed by the twill weave.The droplet tube structure of claim 1, wherein the penetration sleeve (20) is a tissue structure of twill weave, the micro holes each having a diamond shaped outline.The droplet tube structure of claim 1, wherein the penetration sleeve (20) is a plain weave fabric structure, wherein the micro holes each have a rectangular outline.The droplet tube structure according to claim 1, wherein the inclination direction of each water outlet hole (12) is different from the moving direction of the liquid contained in the inner tube (10).

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