JPH022222Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a water retention device for the surface of vegetation such as lawns in golf courses and the like.

The inventor of the present application proposed a system in which a sand layer and topsoil were first applied to an impermeable base, a water collection pipe was placed on the base, and one end of the water collection pipe was connected to a water collection and water level adjustment pit. Patent application No. 189197 (Japanese Patent Application No. 1891-1989) regarding a method for creating grass and other vegetation surfaces.
110274), but the present invention relates to an improvement of the water level adjustment structure.

That is, the water level adjustment mechanism related to the patent application is as follows:
Since the adjustment was made by a hole in the vertical tube inside the pit that could be opened and closed, the adjustment was gradual and fine adjustment was impossible.

The purpose of this invention is to eliminate the above-mentioned drawbacks, and also to be able to fine-tune the water level within the sand layer in a stepless manner, and to quickly recover the condition of the lawn caused by heavy rain. A bottomed outer tube and an inner tube are efficiently combined in an adjustment pit to provide a water retention device for the surface of vegetation such as lawns that is compact and easy to operate.

Next, an embodiment of the present invention capable of achieving the above object will be described in detail with reference to the accompanying drawings.

a is a sand layer, b is topsoil, c is green, d is an impermeable base, e is a water level adjustment pit with a drain pipe _e1 to the drainage ditch, 1 is a collection horizontally laid on the impermeable base d. The water pipe 2 indicates a bottomed outer pipe, and one end of the water collection pipe 1 is connected to one side near the bottom of the bottomed outer pipe 2. Also, on the other side near the bottom of the bottomed outer tube 2 is a screw cap 3a.
A drain pipe 3 having a diameter is connected to the drain pipe 3. 4 is circular mouth 4
The lid 4 is screwed onto the top of the bottomed outer tube 3 via a packing ring 5.

Reference numeral 6 denotes an inner tube that is provided in the bottomed outer tube 2 with a desired gap G so that it can be raised and lowered and that it can be locked at a desired raised and lowered position. It is provided so that it can be raised and lowered through the circular opening 4a of the lid body 4 while being locked by. Further, the lower end 6a of the inner tube 6 is configured to move up and down with a desired distance from the bottom 2a of the bottomed outer tube 2 (note, an interval that allows water to flow). (Note: Although not shown, for example, the inner tube 6
A tsuba is installed at the top to prevent it from descending beyond a certain level. ) In the configuration described above, if the set position of the upper end 6b of the inner pipe 6 is lower than the water level existing in the sand layer a by raising and lowering the inner pipe 6, the upper end 6b of the inner pipe 6 becomes the water level and the excess water is drained away. It enters the gap G between the bottomed outer pipe 2 and the inner pipe 6 from the water collecting pipe 1, enters the inner pipe 6 through the bottom part 2a of the bottomed outer pipe 2, rises, and enters the pit from the upper end 6b. e, and is drained into the drainage ditch via the drain pipe _e1 , and when there is a large amount of rain, etc., the water is lowered down the inner pipe 6 to increase the amount of water discharged, that is, the degree of rise of the inner pipe 6 and In order to adjust the water level by converting the degree of descent and to quickly recover the condition of the lawn due to heavy rain, a drain pipe 3 is installed in the bottomed outer pipe at the same height as the water collection pipe, and the drain pipe 3 By removing the screw cap 3a that is detachably attached to the drain, a large amount of water can be drained in a short time.

Since the present invention is constructed as described above, the water level can be finely adjusted in a stepless manner, so that an appropriate water retention amount can always be obtained, and the water level can be adjusted by simply pulling up or pushing down the inner tube. It has effects such as being able to be adjusted.

[Brief explanation of the drawing]

The drawings show an embodiment of the water retention device for the surface of vegetation such as lawns according to the present invention, with FIG. 1 being a conceptual explanatory diagram and FIG. 2 being a longitudinal side view. G...Gap, 1...Water collection pipe, 2...Bottomed outer pipe,
3...Drain pipe, 3a...Screw lid, 4...Lid body, 4a
...Circle mouth, 5...Patsukin ring, 6...Inner tube.

Claims (1)

[Scope of utility model registration request] One end of the water collection pipe extended on the base is connected to a bottomed outer pipe placed in a water level adjustment pit, and the bottomed outer pipe has an upper end and a lower end that can be raised and lowered to adjust the water level. In addition to inserting an open inner pipe, the upper end of the inner pipe, which determines the water level in the sand layer, is equipped with a means to lock it in a predetermined lifting position, and the other side of the bottomed outer pipe where the water collection pipe is attached can be attached and detached. A water retention device for a surface of vegetation such as a lawn, characterized in that it is provided with a drainage pipe having a screw cap.