JPH0448126B2 - - Google Patents
Info
- Publication number
- JPH0448126B2 JPH0448126B2 JP61184785A JP18478586A JPH0448126B2 JP H0448126 B2 JPH0448126 B2 JP H0448126B2 JP 61184785 A JP61184785 A JP 61184785A JP 18478586 A JP18478586 A JP 18478586A JP H0448126 B2 JPH0448126 B2 JP H0448126B2
- Authority
- JP
- Japan
- Prior art keywords
- water
- water level
- cultivated land
- float
- pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 66
- 230000002262 irrigation Effects 0.000 claims description 4
- 238000003973 irrigation Methods 0.000 claims description 4
- 239000003621 irrigation water Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 2
- 241000209094 Oryza Species 0.000 description 5
- 235000007164 Oryza sativa Nutrition 0.000 description 5
- 235000009566 rice Nutrition 0.000 description 5
- 241000209140 Triticum Species 0.000 description 2
- 235000021307 Triticum Nutrition 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 238000004590 computer program Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000010903 husk Substances 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000004043 responsiveness Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Description
【発明の詳細な説明】
「産業上の利用分野」
本発明は地下潅漑耕地において減圧弁による耕
地水位制御装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to a water level control device for cultivated land using a pressure reducing valve in underground irrigated cultivated land.
「従来の技術」
従来、地下潅漑方式の耕地では地下埋設管、有
材暗渠及び弾丸暗渠を経て田面の上下に潅漑水を
湛水した。そして地下埋切管を水位調節堰に接続
し、堰扉の昇降によつて耕地の水位制御を行つた
（特開昭59−185214号）。又上記地下埋設管に圧力
水を供給する場合は放流水槽に減圧弁を設けその
開閉調節には同水槽内の浮子の昇降を利用した
（特願昭60−90394号）しかし田面水位の変動に対
する浮子及び減圧弁の応動性が悪く所要水位を適
正位置に保持することが困難であつた。``Conventional technology'' Conventionally, in cultivated land using underground irrigation, irrigation water was flooded above and below the rice field through underground pipes, timbered culverts, and bullet culverts. The underground pipe was then connected to a water level control weir, and the water level in the cultivated land was controlled by raising and lowering the weir door (Japanese Patent Application Laid-open No. 185214/1983). In addition, when supplying pressurized water to the above-mentioned underground pipe, a pressure reducing valve was installed in the discharge water tank, and the opening and closing of the valve was adjusted using the lifting and lowering of a float in the tank (Japanese Patent Application No. 1983-90394). The responsiveness of the float and pressure reducing valve was poor, making it difficult to maintain the required water level at an appropriate position.
「発明が解決しようとする問題点」
本発明は稲麦その他の作物の成長に応じた耕地
水位を所要水準幅に保持することを目的とする。"Problems to be Solved by the Invention" An object of the present invention is to maintain the water level of cultivated land within a required range according to the growth of rice, wheat, and other crops.
「問題点を解決するための手段」
本発明は耕地に設けた弾丸暗渠及び有材暗渠を
介して地下埋設管から潅漑水を湛水し、同埋設管
に接続する水槽内に圧力水管を上向に開口し同水
槽内に設けた浮子の下降によつて開き上昇によつ
て閉じる減圧弁を設け、かつ上記埋設管の下流側
に水位設定用溢流装置を設けてなる地下潅漑装置
において、減圧弁の弁座側に設けたシリンダーの
下室を圧力水管に連通して同シリンダーによつて
上記浮子を押上げるよう形成し、かつシリンダー
の上下室をパイロツト３方弁を介して接続し、同
３方弁の切換装置を耕地側に設けた耕地水位感知
フロートに接続してなる減圧弁による耕地水位制
御装置によつて構成される。``Means for Solving the Problems'' The present invention is to fill irrigation water from underground pipes through bullet culverts and material culverts installed in cultivated land, and to raise pressure water pipes into water tanks connected to the underground pipes. In an underground irrigation system, the underground irrigation system is provided with a pressure reducing valve that opens in the direction, opens when a float provided in the water tank descends, and closes when it rises, and an overflow device for setting the water level is provided on the downstream side of the buried pipe, A lower chamber of a cylinder provided on the valve seat side of the pressure reducing valve is connected to a pressure water pipe so that the cylinder pushes up the float, and the upper and lower chambers of the cylinder are connected via a pilot three-way valve, It is composed of a cultivated land water level control device using a pressure reducing valve, which is formed by connecting a three-way valve switching device to a cultivated land water level sensing float provided on the cultivated land side.
「作用」
従つて圧力水管４から圧送された圧力水は下降
している浮子５により開かれている減圧弁１から
水槽１８内に入り浮子５を上昇させて同弁１を閉
じ水槽１８内に貯水すると同時に地下埋設管１
７、有材暗渠１５及び弾丸暗渠１４を経て耕地８
に湛水する。耕地８の水位は水位設定用溢流装置
１３から溢流させることによつて定められる。そ
して耕地水位９は耕地水位感知フロート１０によ
つてその水準が感知される。即ち耕地面や作物の
葉からの蒸発や地下浸透等による水位の低下によ
つて上記フロート１０は下降し、下降によつて切
換装置７を動作しパイロツト３方弁６を切換える
ものである。この切換によつてシリンダー上下室
３′，３″が連通して同上下室には圧力差がなくな
るためピストンは遊動自在となるため水槽１８内
の水位下降に伴つて浮上５が下降し減圧弁１は開
き加力水を供給するため埋設管１７、有材暗渠１
５及び弾丸暗渠１４を経て耕地水位９を上昇させ
る。この水位上昇によつて上記フロート１０が上
昇しパイロツト３方弁６を逆方向に切換えるから
上下室３′，３″は閉じられ上室３″は同３方弁３
の開放口に連通するから下室３′内に圧力水が進
入しピストンを上昇した上室３″内の上記開放口
から排出される。そのため浮子５は上昇して減圧
弁を閉じ、耕地水位９の上昇は止り上述同様の水
位昇降をフロート１０による調整幅１１の範囲内
で繰返すものである。``Function'' Therefore, the pressure water fed from the pressure water pipe 4 enters the water tank 18 through the pressure reducing valve 1 opened by the descending float 5, raises the float 5, closes the valve 1, and enters the water tank 18. Underground pipe 1 while storing water
7. Cultivated land 8 via timbered culvert 15 and bullet culvert 14
be flooded with water. The water level in the cultivated land 8 is determined by overflowing from the water level setting overflow device 13. The level of the cultivated land water level 9 is sensed by the cultivated land water level sensing float 10. That is, the float 10 descends as the water level decreases due to evaporation from cultivated land or crop leaves, underground penetration, etc., and as it descends, the switching device 7 is actuated to switch the pilot three-way valve 6. By this switching, the upper and lower chambers 3' and 3'' of the cylinder communicate with each other, and there is no pressure difference between the upper and lower chambers, so the piston can freely move, so as the water level in the water tank 18 decreases, the float 5 lowers and the pressure reducing valve 1 is a buried pipe 17 and a wood underdrain 1 to open and supply pressurized water.
5 and the bullet culvert 14 to raise the cultivated water level 9. As the water level rises, the float 10 rises and switches the pilot three-way valve 6 in the opposite direction, so the upper and lower chambers 3' and 3'' are closed, and the upper chamber 3'' is closed by the three-way valve 3.
Pressure water enters into the lower chamber 3' through the open port in the upper chamber 3'' where the piston has risen.Therefore, the float 5 rises and closes the pressure reducing valve, lowering the water level in the cultivated land. 9 stops rising, and the same rise and fall of the water level as described above is repeated within the range of adjustment width 11 by the float 10.
「実施例」
耕地８に並設した多数の弾丸暗渠１４及び同暗
渠１４と直交し、同暗渠１４より深い有材（もみ
殻充填）暗渠１５に直立連管１６を介して地下埋
設管１７を設け、上流側及び下流側に水槽１８，
１９を設け上端をそれぞれ耕地８の上方に開口す
る。上流側水槽１８内には水源からの圧力水管４
を上向に開口４′し、同水槽１８内に配設した浮
子５の下降によつて開き、上昇によつて閉じる減
圧弁１を設けるものである。この減圧弁１は上記
上向開口部４′の直上に設けた下向固定弁座２に
対向する上向筒状弁２′を同開口部４′に昇降摺動
自在に嵌合してなり、同筒状弁２′に設けた冂形
枠２０を介して浮上５をスピンドル２１によつて
接続するものである。そして下向固定弁座２の中
央部に直立シリンダー３を設け、同シリンダー３
の下室３′を透孔２２によつて上記上向開口部
４′に連通し、ピストンロツド２３をシリンダー
３の上端から突出して上記冂形枠２０の中央部下
面に圧接するように形成する。シリンダー３の上
下室３′，３″は配管２４，２５によつてパイロツ
ト３方弁６の２方口に接続し、その切換弁の動作
によつて上下室３′，３″を連通し、切換えて上室
３″を３方弁の開放口に連通させるものである。
この切換装置７には耕地８に埋設した上端開放直
立多孔管２６内の水に浮上する耕地水位感知フロ
ート１０を接続し、同フロート１０の昇降によつ
て３方弁６が切換えられるようになつている。設
定水位１２は稲や麦等の作物の成長時期に応じて
調節されるものであつて耕地水位設定用溢流装置
１３によつて設定することができる。この溢流装
置１３は地下埋設管１７に立上り管２７を設け、
同管２７の外周に耕地８上に開口する大径筒２８
を囲繞し同筒２８の底面２８′を同管２７の外周
に接続し、同底面２８′から水槽１９内への排水
管２９を設けかつ上記立上り管２７の上端に昇降
調節自在の溢流管３０を嵌合してなり、同立上り
管２７と水槽１８との間の埋設管１７に開閉弁３
１が設けられる。この溢流管３０の昇降によつて
作物例えば稲の成長時期に応じた水位（田面上３
〜５cm〜田面下10〜60cm）が得られ、それに伴つ
て上記フロート10及び浮子５の水準も変更され
る。尚第４図中３２で示すものは溢流管３０の昇
降用手動ハンドル、第５図中３３は同管３０の駆
動用電動機でコンピユータープログラムによる水
位設定ができる。又３４は昇降用螺杆、３５はフ
ロート１０の昇降調節用螺子、３６は浮子５と昇
降調節用螺子である。``Example'' An underground pipe 17 is connected to a large number of bullet culverts 14 installed in parallel in the cultivated land 8 and a wood-filled (rice husk-filled) culvert 15 that is perpendicular to the culverts 14 and deeper than the culverts 14 through an upright pipe 16. A water tank 18 is provided on the upstream and downstream sides.
19 are provided, and the upper ends thereof are opened above the cultivated land 8. Inside the upstream water tank 18 is a pressure water pipe 4 from a water source.
A pressure reducing valve 1 is provided which opens upward 4', opens when a float 5 disposed in the water tank 18 descends, and closes when it rises. This pressure reducing valve 1 is constructed by fitting an upward cylindrical valve 2' facing the downward fixed valve seat 2 provided directly above the upward opening 4' into the opening 4' so as to be able to slide up and down. , the float 5 is connected by a spindle 21 via an ice-shaped frame 20 provided on the same cylindrical valve 2'. Then, an upright cylinder 3 is provided in the center of the downward fixed valve seat 2, and the cylinder 3
The lower chamber 3' is communicated with the upward opening 4' through a through hole 22, and a piston rod 23 is formed so as to protrude from the upper end of the cylinder 3 and come into pressure contact with the central lower surface of the frame 20. The upper and lower chambers 3', 3'' of the cylinder 3 are connected to the two-way ports of the pilot three-way valve 6 through pipes 24, 25, and the upper and lower chambers 3', 3'' are communicated by the operation of the switching valve. The upper chamber 3'' is switched to communicate with the opening of the three-way valve.
A cultivated land water level sensing float 10 that floats on water in a vertical porous pipe 26 with an open top end buried in the cultivated land 8 is connected to this switching device 7, and the three-way valve 6 can be switched by raising and lowering the float 10. ing. The set water level 12 is adjusted according to the growth period of crops such as rice and wheat, and can be set by an overflow device 13 for setting the cultivated water level. This overflow device 13 is provided with a riser pipe 27 in an underground pipe 17,
A large-diameter tube 28 that opens onto the cultivated land 8 on the outer periphery of the tube 27
The bottom surface 28' of the cylinder 28 is connected to the outer periphery of the pipe 27, and a drain pipe 29 is provided from the bottom surface 28' to the water tank 19, and an overflow pipe is provided at the upper end of the riser pipe 27, which can be raised and lowered. 30, and an on-off valve 3 is installed in the buried pipe 17 between the riser pipe 27 and the water tank 18.
1 is provided. By raising and lowering this overflow pipe 30, the water level (above the rice field)
5 cm to 10 to 60 cm below the surface, and the levels of the float 10 and the float 5 are also changed accordingly. The reference numeral 32 in FIG. 4 is a manual handle for raising and lowering the overflow pipe 30, and the reference numeral 33 in FIG. 5 is a motor for driving the same pipe 30, and the water level can be set by a computer program. Further, 34 is a screw for raising and lowering, 35 is a screw for adjusting the raising and lowering of the float 10, and 36 is a screw for adjusting the raising and lowering of the float 5.
「効果」
本発明は上述のように構成したので耕地の設定
水位が所定位置に定まり、その状態において蒸
発、浸透等による水位低下を比較的敏感に感知し
かつその水位低下を小幅に迅速に調整し得て作物
の成長に好適である。"Effects" Since the present invention is configured as described above, the set water level of the cultivated land is fixed at a predetermined position, and in that state, a drop in water level due to evaporation, infiltration, etc. can be relatively sensitively sensed, and the drop in water level can be adjusted slightly and quickly. suitable for growing crops.
第１図は本発明の減圧弁による耕地水位制御装
置を示す側面図、第２図は耕地水位設定用溢流装
置の側面図、第３図は減圧弁の側面図、第４図は
上記溢流装置を拡大側面図、第５図は溢流管昇降
駆動電動機の側面図、第６図は耕地水位及び設定
水位と時間との曲線である。
１……減圧弁、２……弁座、３……シリンダ
ー、３′，３″……上下室、４……圧力水管、５…
…浮子、６……パイロツト３方弁、７……切換装
置、８……耕地、９……耕地水位、１０……耕地
水位感知フロート、１１……水位調整幅、１２…
…設定水位、１３……水位設定用溢流装置。
Fig. 1 is a side view showing the cultivated land water level control device using the pressure reducing valve of the present invention, Fig. 2 is a side view of the overflow device for setting the cultivated water level, Fig. 3 is a side view of the pressure reducing valve, and Fig. 4 is the above-mentioned overflow device. FIG. 5 is an enlarged side view of the flow device, FIG. 5 is a side view of the overflow pipe lifting/lowering drive motor, and FIG. 6 is a curve of cultivated water level and set water level versus time. 1...Pressure reducing valve, 2...Valve seat, 3...Cylinder, 3', 3''...Upper and lower chambers, 4...Pressure water pipe, 5...
... Float, 6... Pilot 3-way valve, 7... Switching device, 8... Cultivated land, 9... Cultivated land water level, 10... Cultivated land water level sensing float, 11... Water level adjustment width, 12...
...Setting water level, 13...Overflow device for setting water level.
Claims (1)
地下埋設管から潅漑水を湛水し、同埋設管に接続
する水槽内に圧力水管を上向に開口し同水槽内に
設けた浮子の下降によつて開き上昇によつて閉じ
る減圧弁を設け、かつ上記埋設管の下流側に水位
設定用溢流装置を設けてなる地下潅漑装置におい
て、減圧弁の弁座側に設けたシリンダーの下室を
圧力水管に連通して同シリンダーによつて上記浮
子を押上げるよう形成し、かつシリンダーの上下
室をパイロツト３方弁を介して接続し、同３方弁
の切換装置を耕地側に設けた耕地水位感知フロー
トに接続してなる減圧弁による耕地水位制御装
置。1. Irrigation water is flooded from underground pipes through bullet culverts and material culverts installed in cultivated land, and pressure water pipes are opened upward into water tanks connected to the underground pipes, and floats installed in the water tanks are filled. In an underground irrigation system that is equipped with a pressure reducing valve that opens when it descends and closes when it rises, and an overflow device for setting the water level on the downstream side of the buried pipe, there is a A chamber is connected to a pressure water pipe, and the cylinder is formed to push up the float, and the upper and lower chambers of the cylinder are connected via a pilot three-way valve, and a switching device for the three-way valve is provided on the cultivated land side. A cultivated land water level control device using a pressure reducing valve connected to a cultivated land water level sensing float.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18478586A JPS6342634A (en) | 1986-08-06 | 1986-08-06 | Plowland water level controller by pressure reducing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18478586A JPS6342634A (en) | 1986-08-06 | 1986-08-06 | Plowland water level controller by pressure reducing valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6342634A JPS6342634A (en) | 1988-02-23 |
| JPH0448126B2 true JPH0448126B2 (en) | 1992-08-05 |
Family
ID=16159248
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18478586A Granted JPS6342634A (en) | 1986-08-06 | 1986-08-06 | Plowland water level controller by pressure reducing valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6342634A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2863479B2 (en) * | 1995-01-25 | 1999-03-03 | 株式会社パディ研究所 | Water management system for sloping paddy fields |
| JP5254415B2 (en) * | 2011-09-30 | 2013-08-07 | クボタシーアイ株式会社 | Underground irrigation system |
| JP7238649B2 (en) * | 2019-07-09 | 2023-03-14 | 株式会社大林組 | Groundwater pumping device and groundwater pumping method |
| JP2020174659A (en) * | 2019-07-11 | 2020-10-29 | 仲二 和田 | Water supply/drainage device for paddy field |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50135829A (en) * | 1974-04-15 | 1975-10-28 | ||
| JPS595723A (en) * | 1982-06-30 | 1984-01-12 | Murata Mfg Co Ltd | Electrode structure of thin film of zinc oxide |
-
1986
- 1986-08-06 JP JP18478586A patent/JPS6342634A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50135829A (en) * | 1974-04-15 | 1975-10-28 | ||
| JPS595723A (en) * | 1982-06-30 | 1984-01-12 | Murata Mfg Co Ltd | Electrode structure of thin film of zinc oxide |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6342634A (en) | 1988-02-23 |
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