JPH07170866A - Water-retention pipe - Google Patents

Abstract

PURPOSE:To provide a water-retention pipe effective for lessening the water- sprinkling labor by retaining excess water impregnated into the ground in the case of rain-fall and releasing the retained water in a dry season. CONSTITUTION:This water-retention pipe is composed of a water-permeable pipe main body 1 made of a net material having small holes 3 and produced by combining narrow flat yarns 2, 2, 2 in the form of a net and a continuous reinforcing strip 4 made of a synthetic resin and spirally wound on the outer circumference of the main body 1 and integrally bonded by welding or bonding. A water-absorbing material 5 made of a vinyl alcohol-acrylic acid copolymer, etc., is filled in the water-permeable pipe 1 in a state properly included in a spongy material. The size of the water-absorbing material 5 is adjusted to a level not to completely close the inner diameter of the water-permeable pipe main body 1 in water-absorbed expanded state. The water impregnated into the ground in the case of rain-fall is flowed into the pipe and absorbed in the water-absorbing material 5. A space 7 to enable the drainage of water by introducing excess water into the pipe is left in the pipe even if the water-absorption material is expanded by the absorption of water.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water retention pipe to be buried in the ground of a green belt for nurturing flower beds, gardens, vegetables and fruits growing areas, golf courses, tree planting areas or roadside trees. is there.

[0002]

2. Description of the Related Art Conventionally, in flower beds, horticultural fields, vegetable and fruit cultivating areas, golf courses, etc., water sprinkling facilities have been installed to sprinkle water to promote the growth of plants, or the ground is exposed to long periods of rain such as the rainy season. It has been practiced to bury drainage pipes to prevent drainage from becoming wetlands and promote drainage.

The underdrain drainage pipe prevents the ground from becoming a wetland by draining surplus underground seepage rainwater at the time of rainfall, and prevents harmful effects on plants such as soil rot and root rot. It is a thing. The underdrain drainage pipe is buried in the ground in the form of a pipe made of a water-permeable material such as a net, and excess rainwater in the ground is introduced by introducing it through the water-permeable material into the pipe of the underdrain drainage pipe. Excess water is drained, and it is devised to keep the water content in the ground appropriately by removing excess water from the ground so that the soil cannot absorb water.

[0004]

However, the above-mentioned conventional underdrain drainage pipe has an effect of draining surplus water from the ground to prevent soil from becoming a wetland at the time of long-term rainfall such as in the rainy season. In the season when dryness continues for a long time,
Even if there is a temporary rainfall, the rainwater that has penetrated into the ground will be drained in a short time, so it will not be possible to keep the rainwater in the ground for a long time, and the amount of water retention in the ground will easily become insufficient. There was a problem of being lost. Therefore, it was necessary to frequently water the plants in the dry season such as summer.

The present invention has been made in view of the above-mentioned problems of the prior art. In the case of rainfall, surplus underground permeated water is retained by a water absorbing material such as a water absorbing synthetic resin polymer, and the water absorbing agent is dried during drying. (EN) A water retention pipe capable of reducing the time and effort required for watering during the dry season by releasing the water retained in the material into the ground.

[0006]

In order to achieve the above object, the present invention according to claim 1 provides a water-permeable synthetic resin polymer or the like inside a water-permeable pipe made of a water-permeable material such as a net or a nonwoven fabric. A water-absorbing material is incorporated in such a size that the inner diameter of the water-permeable pipe is not sealed when absorbing water, and a reinforcing strip is integrally provided on at least one of the outer peripheral surface and the inner peripheral surface of the water-permeable pipe. It is a characteristic water retention pipe.

In the above water retention pipe, a water absorbent material such as a water absorbent synthetic resin polymer is incorporated in such a size that the inner diameter of the water permeable pipe is not sealed, and it is placed in the water permeable pipe as a sponge. Alternatively, such a water-absorbing material may be included in a small-diameter water-permeable pipe in advance, and may be arranged in an appropriate space inside the large-diameter water-permeable pipe. In addition, a water-absorbent material such as a water-absorbent synthetic resin polymer may be included in a water-permeable bag and placed inside a water-permeable pipe made of a water-permeable material such as a net or a non-woven fabric. It should be built in such a size that a space is provided in the sex pipe.

[0008]

Therefore, according to the water-retaining pipe of the present invention, a water-absorbing material such as a water-absorbing synthetic resin polymer is absorbed inside the water-permeable pipe made of a water-permeable material such as a net or a nonwoven fabric when the water-absorbing pipe is expanded. Since it is built in a size that does not seal the inner diameter, if it is buried in the ground, excess underground permeated water that has penetrated into the ground when it rains enters the pipe through the peripheral wall of the permeable pipe, Water will be retained by the water absorbent material inside. In addition, even during periods other than the rainy season, excess water that has been watered will be absorbed by the water retention pipes buried in the ground and will be retained for a long time.

Further, since the water-absorbent material is built in such a size that the inner diameter of the water-permeable pipe is not sealed at the time of water absorption, even if the water-permeating rainwater in the ground is absorbed and expanded, the water-absorbent material is kept inside the water-permeable hose. A drainage channel will be secured to allow the excess water that cannot be absorbed completely to drain. Therefore, when the rainfall continues for a long period such as in the rainy season, it is possible to prevent the soil from becoming a wetland by draining excess permeating rainwater in the ground that exceeds the water absorption capacity through the water permeable pipe.

Further, when the soil dries after the rain stops, the water retained in the water absorbent material is released into the ground to prevent the soil from overdrying and frequent watering work. Without doing so, the water needed for plant development will be supplied to the soil. Therefore, it is not necessary to frequently sprinkle water even during the dry period, and it is possible to reduce the time and effort required for sprinkling.

Furthermore, when the water-absorbent material is contained in a small-diameter water-permeable pipe in advance and disposed inside the large-diameter water-permeable pipe, the water-absorbent material is stably arranged in the water-permeable pipe and is partially It is possible to maintain uniform water retention without unevenness.

If the water-absorbent material is placed in a water-permeable bag to be placed therein, the number of bags can be adjusted to adjust the amount of the water-absorbent material to adjust the water retention according to the regional characteristics. It is possible, and in an area where the dry season is long, many bags of water absorbing material can be incorporated to obtain water retention for a long dry period.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a water retention pipe of the present invention will be described below with reference to the drawings. FIG. 1 shows a water-retaining pipe of the present invention, in which 1 is a water-permeable pipe body, and a thin flat yarn 2,2,2 of polyethylene or the like having a pipe wall stretched in a longitudinal direction is provided. A spirally wound water-permeable material composed of a band-shaped net having a large number of small holes 3 formed by welding the intersecting portions to each other, and joining them in a pipe shape. It was done. In this embodiment, the narrow flat yarns 2, 2, 2 are formed to have a width of about 2 mm, and the size of the small holes 3 for filtering the surplus rainwater in the ground is 0.3 to 3 mm. It is formed in the range of.

The small holes 3 of the water-permeable pipe main body 1 are for burying in the ground and filtering the water in the earth and sand that has penetrated into the ground when it rains to flow into the pipe. Even if the small holes may be blocked by the sediment when they are buried in the ground, the sediment itself has a draining action, so that the inflow of water into the soil is not hindered. As a material constituting such a water-permeable pipe body 1, in addition to a net material in which the narrow flat yarns 2, 2, 2 are combined in a net shape, a synthetic resin fiber material is joined by adhesion or fusion. A water-permeable nonwoven fabric or the like is used.

A long reinforcing strip 4 formed of synthetic resin along the outer peripheral surface of the water-permeable pipe body 1 is spirally wound and integrally joined by fusion or adhesion. Prevents the pipe from being deformed or crushed by being crushed in the ground by an external force. Such a reinforcing strip 4 may be provided in a circular ring shape other than the spirally provided one as described above, or may be provided on the inner peripheral surface of the water-permeable pipe main body 1. .

Inside the water-permeable pipe main body 1, a water-absorbing material 5 made of a water-absorbing synthetic resin polymer formed mainly of vinyl alcohol / acrylic acid copolymer or sodium polyacrylate polymer is appropriately used. It is embedded in a sponge-like object. The water-absorbent material 5 made of the water-absorbent synthetic resin polymer is 200 when contacted with water.
It absorbs and swells water having a volume of ˜450 times in a short time to expand the volume and maintain the water retention state for a long time.

The water-absorbent material 5 is contained in such a size that the inner diameter of the water-permeable pipe main body 1 is not completely sealed in the expanded state when absorbing water. That is, at the time of rainfall, a space 7 is provided to allow excess permeated water to flow into the pipe and drain it even if the permeated water in the ground flows into the pipe and the water-absorbent material 5 expands when the water-absorbent material 5 expands. ing.

FIG. 2 shows another embodiment of the water-retaining pipe of the present invention, in which the water-permeable pipe 8 formed inside the water-permeable pipe body 1 has a diameter smaller than that of the water-permeable pipe body 1. The water absorbent material 5 is included and arranged.

That is, the water-permeable pipe is formed in double, and the water-absorbing material 5 is provided inside the water-permeable pipe 8 inside. By embedding this structure in the ground, rainwater in the ground that has flowed through the small holes 3 of the large-diameter water-permeable pipe body 1 has a small-diameter water permeability that encloses the water-absorbing material inside. By guiding the water-absorbing material 5 inside, the water-absorbing material 5 therein is made to retain water.

FIG. 3 shows another embodiment of the water-retaining pipe of the present invention, in which a water-permeable bag body 9 containing a water-absorbing material 5 is arranged inside the water-permeable pipe body 1. Is. As the water-permeable bag body 9, various accommodating bag bodies such as non-woven fabric, cloth bag, mesh bag and perforated bag can be used. With this structure, by burying it in the ground, rainwater in the ground that has flowed in through the small holes 3 of the water-permeable pipe body 1 passes through the water-permeable holes of the water-permeable bag body 9 and the water-absorbing material inside it. 5 is to retain water.

The structure of the embodiment of FIGS. 2 and 3 is
The water-absorbent material 5 inside the water-permeable pipe body 1 can be installed in a stable state, and even if the water-absorbent material 5 is buried obliquely on a sloping ground, the water-absorbent material 5 does not move under running water and is uniform. It is possible to obtain excellent water retention.

The water retention pipe of the above-mentioned embodiment is formed so as to be freely connectable by providing joints or the like at both ends, and a plurality of water retention pipes are connected to form a long water retention pipe to form sand in the ground at a desired position. It is used by embedding it with etc.

[0023]

As described above, according to the present invention, a water-absorbent material such as a water-absorbent synthetic resin polymer is placed inside a water-permeable pipe made of a water-permeable material such as a net or a non-woven fabric when the water-permeable pipe is expanded. Since it is a water retention pipe characterized in that it has a built-in size that does not seal the inner diameter and that a reinforcing strip is integrally provided on at least one of the outer peripheral surface and the inner peripheral surface of the water-permeable pipe, By burying it in the pipe, surplus underground permeated water that has penetrated into the ground during rainfall will enter the pipe through the peripheral wall of the water permeable pipe and will be retained in the water absorbent material in the pipe in a short time. In the dry season, the retained water can be released inside the water-permeable pipe to replenish the soil with appropriate water to reduce the time and effort required for watering.

Further, since the water-absorbent material is incorporated in such a size that the inner diameter of the water-permeable pipe is not sealed when the water-absorption is expanded, even if the water-permeable material absorbs the permeated rainwater and expands, it remains inside the water-permeable hose. Will be able to secure drainage channels that allow excess water to pass through and drain excess rainwater underground to prevent it from becoming a wetland when rainfall continues for a long period, such as during the rainy season. Has the effect. In addition, the water-permeable pipe has a reinforcing strip to prevent it from collapsing in the ground.Therefore, an appropriate air passage is secured inside the water-retaining pipe, which promotes the growth of plants by supplying the retained water and air. It has an effect that it can be made.

Further, in the second aspect of the present invention, in the above water retaining pipe, a water absorbent material such as a water absorbent synthetic resin polymer is enclosed in a water permeable pipe having a small diameter to form a large water permeable material such as a net or a nonwoven fabric. Since it is a water retention pipe characterized by being incorporated inside a water permeable pipe of a diameter, the water absorbent material is stably arranged in the water permeable pipe, and uniform water retention is maintained without partial deviation. At the same time, the water-absorbent material does not move or flow out inside the water-permeable pipe even if it is embedded in a sloping ground.

Further, in the invention of claim 3, a water-absorbent material such as a water-absorbent synthetic resin polymer is contained in a water-permeable bag body, and is incorporated inside a water-permeable pipe made of a water-permeable material such as a net or a nonwoven fabric. Since it is a water retention pipe characterized by being made, the water-absorbent material is stably arranged in the water permeable pipe, while maintaining a uniform water retention without partial deviation, There is an advantage that the insertion work is easy and the water retention pipe can be manufactured by adjusting the number of bags and imparting water retention according to the degree of the drying period.

[Brief description of drawings]

FIG. 1 is a partially cutaway side view of a water retention pipe according to claim 1 of the present invention,

FIG. 2 is a partially cutaway vertical side view of the water retention pipe according to claim 2 of the present invention,

FIG. 3 is a partially cutaway vertical side view of a water retention pipe according to claim 3 of the present invention.

[Explanation of symbols]

 1 Water-permeable pipe body 2 Flat yarn 3 Small holes 4 Reinforcing strips 5 Water-absorbent material 7 Space 8 Small diameter water-permeable pipe 9 Water-permeable bag

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI technical display location // A01G 27/00

Claims (3)

[Claims] 1. A water-permeable pipe made of a water-permeable material such as a net or a non-woven fabric is filled with a water-absorbing material such as a water-absorbing synthetic resin polymer in such a size that the inner diameter of the water-permeable pipe is not sealed when absorbing and expanding. A water retention pipe, characterized in that it is built in and a reinforcing strip is integrally provided on at least one of the outer peripheral surface and the inner peripheral surface of the water permeable pipe. 2. A water-absorbing material such as a water-absorbing synthetic resin polymer is contained in a small-diameter water-permeable pipe, and is incorporated inside a large-diameter water-permeable pipe made of a water-permeable material such as a net or a nonwoven fabric. The water retention pipe according to claim 1, characterized in that. 3. A water-absorbent material such as a water-absorbent synthetic resin polymer is enclosed in a water-permeable bag and is incorporated inside a water-permeable pipe made of a water-permeable material such as a net or a nonwoven fabric. The water retention pipe according to claim 1.