JPS5854289A - Slop tube - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] The present invention relates to an irrigation tube that is flat when no water is flowing through it and rounded when water is flowing through it, and has a large number of small holes drilled only on one side, and the small holes are The present invention relates to a irrigation tube that is unevenly distributed on one side so that water can be applied only to the side where the small hole is drilled in the irrigation tube, and is suitable for uniform irrigation with an economical amount of water.

The irrigation tube, which is obtained by drilling small holes at appropriate intervals in the longitudinal direction of a flat long tube made from a plastic tube such as polyolefin, is lightweight, easily bendable, and can be reeled. Since it can be rolled up into
It is convenient for transportation, installation, storage, etc., and has the advantage that the location of the irrigation tube can be easily changed depending on the size of the field, different types of plants, and the degree of growth of the plants. These irrigation tubes are used in various fields, greenhouses, greenhouses, home gardening, etc., and flat irrigation tubes are installed on the ground along crop ridges or suspended in the air. When water is flowing, the tube takes on a rounded shape, and water is sprayed out or drips from the small holes on the surface of the irrigation tube.

On the other hand, in conventional irrigation tubes of this type, small holes are drilled over the entire surface of one side of the irrigation tube when it is flat, so if it becomes rounded during water flow, water will be applied to both sides of the installed irrigation tube. Only what was known was known.

Therefore, when irrigating a large field, measures were taken to arrange the irrigation tubes appropriately to ensure uniform watering, but when irrigating a field with limited topography, it was necessary to In some cases, it may be necessary to install irrigation tubes at the side ends.
In such cases, not all of the water spouted or dripped from the irrigation tube was supplied to the field, and half of the water was sprinkled outside the field, often resulting in wasteful consumption.

Particularly in greenhouse cultivation, if conventional irrigation tubes are installed near the side walls of the greenhouse, the water ejected from the irrigation tubes will directly hit the greenhouse film, forming droplets and blocking sunlight, which will have a negative impact on crop growth. was giving.

The present inventors have studied these points and found an irrigation tube that is suitable for more uniform irrigation with an economical amount of water even in limited fields, resulting in the present invention.

That is, the present invention is a long tubular body that is flat when water is not flowing and rounded when water is flowing, and has a number of small holes drilled only on one side when it is flat. This invention relates to a irrigation tube characterized by being unevenly distributed only on one side.

A preferred example of the irrigation tube of the present invention will be explained with reference to the drawings.

1 and 2 are cross-sectional views of irrigation tubes,
(&) indicates a flat state when water is not flowing,
(b) shows the rounded state when water is flowing.

Further, FIG. 6 is a perspective view of a main part of the irrigation tube shown in FIG. 2.

The irrigation tubes are all made of plastics, such as polyolefins such as medium-low density polyethylene, high density polyethylene, ethylene-vinyl acetate copolymer, polyvinyl chloride, and various synthetic rubbers.

In Fig. 1, a irrigation tube is shown in which a plastic film 1゜2 is integrated with heat-sealed parts 4 on both sides to form a long tubular object, and in Fig. 2, a long tubular object is formed by extrusion molding. A irrigation tube designated as item 3 is shown.

Each of the irrigation tubes becomes flat when water is not flowing, and a small hole 5 is formed only on one side of the tube.

The present invention is characterized in that these small holes are not distributed over the entire surface, but are distributed only on at least one side bisected in the longitudinal direction, and when water is flowing, water is applied only to one side of the installed irrigation tube. It is something.

The drawings show an example in which six rows of small holes 5 are bored, but the arrangement and number of small holes can be changed as necessary.

In either case, the small holes are unevenly distributed on one side of the irrigation tube when it is flat, and on one side of the tube divided into two in the longitudinal direction.

According to the present invention, when the irrigation tube is laid on the ground or suspended in the air when water is not flowing, the irrigation tube is flat, so it sits comfortably, and twisting of the tube itself can be easily prevented. Therefore, the direction of water sprinkling through the small holes can also be properly controlled.

In particular, when irrigating a field with limited topography, by using a conventional irrigation tube in the center of the field and using the irrigation tube of the present invention at the side edges of the field, the entire field can be economically irrigated. You can irrigate evenly with just the right amount of water.

A particularly preferred embodiment of the present invention is to provide a filter layer 6 within the irrigation tube, as shown in FIG. 1, and the filter layer 6 is heat-sealed to film 1 and film 2 on both sides, respectively.

By providing the single filter layer 6, it becomes possible to use water mixed with dust, sand, etc., and clogging of the small pores can be prevented for a long period of time.

Another preferred embodiment of the invention is shown in FIG.

In this embodiment, a plurality of rows of small holes such as small holes 51, 52 and 53 are drilled, and water is jetted into the air from these small holes to irrigate an area a certain distance from the irrigation tube. FIG. 5 is a cross-sectional view of the irrigation tube showing the location of the small holes. Distance a, b from the center of the irrigation tube
As shown in Fig. 4, the number of small holes 51, 52 and 53 at points 51, 53 and C increases sequentially per unit length of the irrigation tube, and at each point a, b of the irrigation tube.
The amount of water sprinkled per unit length by the small hole at each point and point C is adjusted so that it becomes a successively larger value as shown in FIG.

As a result, even if the area is a certain distance from the irrigation tube, it is possible to form an area with a uniform amount of irrigation over a relatively wide area.

For example, paper pots and seedling boxes are lined up in rows to raise seedlings of rice, beets, etc., but they are not always lined up in an orderly manner, and the distances between the seedling boxes vary; By simply installing the irrigation tube of the present invention near only one side of the box, each seedling growing box can be uniformly watered.

In addition, in fields, irrigation tubes are often installed along the ridges, and as the crop grows, the height of the crop increases and the leaves of the crop become an obstacle to watering from the irrigation tube. It is desirable to adjust the watering distance so that the water can be spread over a wide area by moving away from the ridges, but when installing conventional tubes that irrigate on both sides between the ridges, the spacing between the ridges is fixed, so the distance from the irrigation tube to both sides is fixed. The distance to the crop is also fixed and cannot be changed. However, according to the irrigation tube of the present invention, since there is only one water on one side, it is only necessary to adjust the irrigation tube by focusing on the ridges on one side, making the work simple.

On the other hand, with double-sided irrigation tubes, water is applied to the ridges on both sides, so care must be taken that the watering will overlap and the uniformity of the amount of watering will be disrupted.

In addition, even if the irrigation tube of the present invention is installed near the greenhouse film, it can only irrigate the side opposite to the vinyl film, and unlike conventional double-sided irrigation tubes, irrigation water reaches the greenhouse film and forms drops. They do not block the sun's rays, and since they are installed between the ridges in the greenhouse, they do not obstruct work or traffic inside the greenhouse.

In addition, in ordinary households, when watering terraced chick beds for bonsai, vegetable gardens, gardens, etc., conventional irrigation tubes are not used.
Because both sides are irrigated, it is necessary to install an irrigation tube in the center of the chick bed, vegetable garden, garden, etc., which becomes an obstacle when walking in the vegetable garden or garden, and spoils the scenery. According to irrigation tubes, irrigation tubes can be installed at the edges of chick beds, vegetable gardens, and gardens, for example, at the boundaries with buildings, fences, etc., and can uniformly irrigate the desired area, making it easy to use while walking. It is economical because it does not interfere with the environment, does not damage the landscape, and requires less irrigation.

Furthermore, since the irrigation tube of the present invention is flat when water is not flowing, even after the irrigation tube has been moved, the direction of irrigation is automatically determined by simply placing it on the ground, making it easy to move the irrigation tube.

In Example 5, the distance from the center of the irrigation tube to the small hole is a = 2 mm, l) = 5n1mSc - 10m.
However, 16 small holes 51, 62 small holes 52, and 48 subholes 53 were drilled per meter of irrigation tube. Both small holes are slit-shaped with length Q and 6 mm.
The water pressure was about 0.79 kglol and the water flow rate was about 251/min. 15cIII to 16 from the center of the irrigation tube
The amount of water sprinkled at the point 5c11 was measured and shown in Figure 7.

Furthermore, the irrigation tube of the present invention has good uniformity in the amount of water applied in its longitudinal direction, and can uniformly apply water over a length of, for example, about 5 Qm to about 100 m.

[Brief explanation of drawings]

1, 2 and 5 are cross-sectional views of the irrigation tube. Figures 3 and 4 are slope views of the main parts of the irrigation tube.
The figure is a graph showing the amount of water sprayed by each small hole per unit length of irrigation tube. Figure 7 is a graph showing the distribution of watering amount (cIR275 minutes) at each distance from the center of the irrigation tube01.2...Plastic film 6...Long tubular material 4... ...Heat seal part 5...Small hole 6...Filter layer 7...Heat seal' part 51.52.53... Small hole applicant: Mitsui Petrochemical Industries Co., Ltd. Agent Kazuhiro Yamaguchi 1 Figure 3 Figure 5 Figure 6 Figure Distance from the center of the irrigation tube Figure 4 Figure 7

Claims (1)

[Claims] (1) It is a long tubular body that is flat when water is not flowing and rounded when water is flowing, and has a large number of small holes drilled only on one side when it is flat. A irrigation tube characterized by being unevenly distributed on one side only.