JPS6036351Y2 - douche tube - Google Patents

Description

[Detailed description of the invention] The present invention relates to an irrigation tube for agriculture or horticulture, and is a flexible irrigation tube that allows normal irrigation over a long period of time even when using turbid water containing suspended matter such as iron oxide. It's about tubes.

In recent years, in order to grow agricultural crops such as fruits and flowers, flexible irrigation tubes having small holes have been used to irrigate the roots of the crops and the entire crops.

. In this case, in order to perform uniform irrigation, it is necessary to drill uniform small holes in the tube material so that there is no drop in water pressure from the water source to the end of the irrigation tube.

However, the water used for irrigation is not necessarily clear water, and generally contains a large amount of suspended matter such as iron oxide, inorganic matter, and organic matter. It becomes clogged and becomes unusable within a very short period of time.

Therefore, in order to prevent these small holes from clogging, irrigation tubes have been devised in which a filter material such as cloth or non-woven fabric is attached to the inside of the tube material, but water is also discharged from the small holes in the tube material. Therefore, the filter material around the small pores becomes clogged with floating matter in a short period of time.

As a result, the same phenomenon as the clogging of the small holes described above occurs, making it impossible to maintain uniform irrigation over a long period of time.

In view of the above points, the present inventor has made various studies and has arrived at the present invention.

1 and 2 of the drawings of the embodiments of the present invention, the present invention comprises at least a nonwoven fabric 1 with a relatively coarse structure (hereinafter simply referred to as coarse nonwoven fabric) 1 and a nonwoven fabric with a relatively dense structure (hereinafter simply referred to as coarse nonwoven fabric) 1. It consists of a filter material 3 that is polymerized or integrated with a dense non-woven fabric (2) and a flexible tube material 5 having small holes 4, with the coarse structure side of the filter material 3 being This is a flexible irrigation tube 7 characterized by being provided so as to be in contact with an inner wall.

1 and 2 are cross-sectional perspective views of an irrigation tube according to an embodiment of the present invention during water flow, and FIG. 3 is an enlarged vertical cross-sectional view of a portion thereof.

Next, the operation of the present invention will be explained with reference to FIG. When the water sent through the tube in the direction of arrow A contains floating matter, the floating matter enters the small hole 4 of the tube material 5.
The water is captured by the surface area A of the dense non-woven fabric 2 around the periphery of the water, and the water is released from the small holes 4 through the arrow openings. Then, water passes through arrow C and arrow 2, and is discharged from the small hole 4.

Even if the periphery of the small pores 4 of the dense nonwoven fabric 2 is clogged with floating matter, in the present invention, since the coarse nonwoven fabric 1 functions as a water conducting layer, the water is gradually guided to the small pores 4. As the waterway moves from the mouth to C and then to C, it takes a considerable period of time until the entire surface of the dense nonwoven fabric 2 becomes an impermeable layer and normal irrigation is no longer possible.

Furthermore, it is estimated that due to the difference between the flow of water in the water conductive layer and the flow of water in the water passage section, floating objects trapped on the surface of the dense nonwoven fabric 2 will also be released, thereby eliminating clogging. .

In this way, the irrigation tube of the present invention does not have to worry about clogging of the small holes, and can maintain normal irrigation for a long period of time, which is incomparable to conventional products.

Furthermore, since the filter material is in contact with the tube material, the tube material is also reinforced, which has the advantage of being able to apply uniform water pressure over the entire length of the irrigation tube.

As the flexible tube material used in the present invention, known flexible natural rubber, synthetic leather rubber, or synthetic resin can be used, and polyethylene, polyvinylidene chloride, etc. are particularly preferred.

In addition, the nonwoven fabric used as a filtering material may be made by any method such as dry method, wet method, spunbond method, etc., and the type of fiber, fiber length, thickness, etc. are selected appropriately. be able to.

The dense nonwoven fabric is determined depending on the size of the pores, but it is sufficient as long as it can at least trap floating objects.

In the present invention, "polymerization" means that the original nonwoven fabric 1 and the dense nonwoven fabric 2 are laminated together or laminated together using an adhesive, heat, etc., and "integration" means that the nonwoven fabric has already formed at least a coarse layer and a dense layer. It refers to something that has layers, that is, something that has density differences.

It is preferable that the denser nonwoven fabric 2 has a density difference because the filtration capacity can be further increased.

However, it is necessary that the coarsely structured side of the filter material be in contact with the inner wall of the tube material.

In view of the effectiveness of the filtration area, it is preferable for the filtration material 3 to cover the entire inner wall of the tube material 5, but it is preferable to cover the entire surface of the inner wall of the tube material 5 to the extent that a water-conducting layer can be formed on the side where the small holes are formed. It doesn't matter if you stay there.

In the present invention, for example, the coarse nonwoven fabric is a nonwoven fabric with a weight of 40 g/-, which is made by bonding a web mainly composed of polyester fibers with a thickness of about 5 denier with an acrylic binder, and the dense nonwoven fabric is a nonwoven fabric with a thickness of about 1 denier. It is a nonwoven fabric with a weight of 50 g/d made by similarly bonding a web mainly composed of polyester fibers with an acrylic binder.

These are pasted together with adhesive, weight 90g/d, thickness 0
．． 871r! It's filter media is made into a tape shape, and its rough structure side is overlapped with a tape-shaped tube material with small holes at regular intervals, and the filter media side is folded in half along the longitudinal direction to open the width direction. The ends are glued together and molded to form a irrigation tube as shown in Figure 1.

In this case, since the water conductive layer is formed of the coarse nonwoven fabric over almost the entire circumference, the filtration capacity of the dense nonwoven fabric becomes large, and normal irrigation over a long period of time is possible.

As for the method of forming the open end in the width direction of the bonded part 8 in FIG. 1, a hot pressure bonding method such as high frequency welding or ultrasonic welding is easy and inexpensive, but it is also possible to use an adhesive method or a known cylindrical shape. A method of molding can also be used.

The irrigation tube of the present invention is not limited to the above-mentioned embodiments, but can be applied in various ways, such as a sprinkler type or a drip type, which can be selected as appropriate depending on the purpose.
This is an extremely practical irrigation tube that enables normal irrigation over a long period of time.

[Brief explanation of the drawing]

1 and 2 are cross-sectional perspective views of one embodiment of the flexible irrigation tube of the present invention in a water-flowing state;
The figure is an enlarged partial vertical sectional view of the irrigation tube of the present invention. 1... Non-woven fabric with relatively rough structure, 2...
・Nonwoven fabric with a relatively dense structure, 3...Filtering material in which 1 and 2 are polymerized or integrated, 4...Small pores, 5...Tube material , 6...Water flow part, 7...Irrigation tube, butt...Passing part, arrow A99B in Figure 3, H2 indicates water flow, A , B
, C represents the part clogged with floating matter.

Claims (1)

[Scope of utility model registration request] It consists of a filter material in which at least a non-woven fabric with a relatively coarse structure and a non-woven fabric with a relatively dense structure are polymerized or integrated, and a flexible tube material having small holes, and the coarse structure of the filter medium is A flexible irrigation tube characterized in that a side thereof is provided so as to be in contact with an inner wall of the tube material.