JPH02300411A - Perforated intake tower - Google Patents

Perforated intake tower

Info

Publication number
JPH02300411A
JPH02300411A JP11998189A JP11998189A JPH02300411A JP H02300411 A JPH02300411 A JP H02300411A JP 11998189 A JP11998189 A JP 11998189A JP 11998189 A JP11998189 A JP 11998189A JP H02300411 A JPH02300411 A JP H02300411A
Authority
JP
Japan
Prior art keywords
tower body
water
water intake
tower
hole
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.)
Granted
Application number
JP11998189A
Other languages
Japanese (ja)
Other versions
JP2581977B2 (en
Inventor
Shingo Yamaguchi
進吾 山口
Masaru Murata
優 村田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nishida Marine Boiler Co Ltd
Original Assignee
Nishida Marine Boiler Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nishida Marine Boiler Co Ltd filed Critical Nishida Marine Boiler Co Ltd
Priority to JP1119981A priority Critical patent/JP2581977B2/en
Publication of JPH02300411A publication Critical patent/JPH02300411A/en
Application granted granted Critical
Publication of JP2581977B2 publication Critical patent/JP2581977B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

PURPOSE:To eliminate the need of a power source to the intake hole of an intake tower by providing a plurality of intake holes respectively provided with float valves to the tower body and an outer cylinder provided with a screen around the tower body, and then, a projecting section along the inner peripheral surface of the outer cylinder by at least one round. CONSTITUTION:A plurality of intake holes 3 are provided through the side wall of the tower body 2 of this intake tower and screens 3a are fitted to the inlet of each hole 3. A float valve 4 is provided inside the tower body 2 and an outside cylinder 6 is formed of a peripheral side board 6a around the tower body 2. Then a projecting section 7 formed in two stages of an upper and lower sections is formed over the entire internal peripheral surface of the board 6a. When the water level inside and outside the tower body 2 becomes lower, the valve 4a at one of the holes 3 drops together with the float 4c and the inlet 3c of the hole 3 is opened, resulting in flowing-in of warm water into the hole 3 from the surface layer. In such case, flowing-in of water from the lateral direction can be blocked and flowing-in of cold water from a lower layer into the tower body 2 through the hole 3 can also be prevented.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 この発明は、例えば河川、湖、貯水池などの表層部の温
水を取水する塔状構造物からなる取水塔に係り、特に、
取水塔の塔体に高さ方向に所定間隔で穿設された複数の
取水孔を水位による浮力を利用して無動力で且つ自動的
に開閉し、表層部の温水以外の取水を防ぐようにした多
孔式取水塔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 intake tower consisting of a tower-like structure that takes in hot water from the surface layer of a river, lake, reservoir, etc., and in particular,
Multiple water intake holes drilled at predetermined intervals in the height direction of the water intake tower body are opened and closed automatically using the buoyancy of the water level, without any power, to prevent the intake of water other than hot water from the surface layer. This relates to a perforated water intake tower.

〔従来の技術〕[Conventional technology]

従来、取水設備は例えば河川、湖、貯水池などの表層部
の温水取水を主な目的とする他に、貯水池の濁水層の排
出や低温水の供給のために、任意深さからの選択取水の
ために使用されることもある。
Traditionally, water intake equipment has been used primarily to take hot water from the surface of rivers, lakes, and reservoirs, but also to selectively take water from arbitrary depths to drain the turbid water layer of reservoirs and supply low-temperature water. Sometimes used for.

この取水設備には例えば、塔体に高さ方向に穿設された
複数の取水孔を有する取水塔や、伸縮取水管を備え水位
の変動に追従して伸縮取水管の上端の取水口が昇降する
取水装置などがある。
This water intake equipment includes, for example, a water intake tower with multiple intake holes drilled in the height direction in the tower body, and a water intake tower with an expandable intake pipe that moves up and down at the upper end of the expandable intake pipe to follow fluctuations in water level. There is a water intake device etc.

このうち、塔体に高さ方向に穿設された複数の取水孔を
有する取水塔にあっては、各取水孔には開閉弁が設けら
れ、例えば表層部の温水以外の取水を防ぐようになって
いる。そして、これらの取水孔に設けられた開閉弁は水
位の変動に応じて手動又は機械的・電気的な駆動手段で
開閉されている。
Among these, for water intake towers that have multiple water intake holes drilled in the height direction of the tower body, each intake hole is equipped with an on-off valve, for example, to prevent the intake of water other than hot water from the surface layer. It has become. The on-off valves provided in these water intake holes are opened and closed manually or by mechanical/electric drive means in accordance with fluctuations in water level.

〔発明が解決しようとする課題〕[Problem to be solved by the invention]

ところで、前述の取水塔の塔体に高さ方向に穿設された
取水孔の開閉弁を、水位の変動に応して機械的・電気的
な駆動手段で自動的に開閉するためには、例えば油圧シ
リンダー、電動モータなどの駆動機器や、水位の変動を
検出するa器等を必要とし、その分設歯がおおがかりと
なり、又その維持管理も多大となる等の欠点があった。
By the way, in order to automatically open and close the on-off valve of the water intake hole, which is perforated in the height direction in the tower body of the water intake tower mentioned above, using mechanical and electrical drive means in accordance with fluctuations in the water level, it is necessary to For example, it requires driving equipment such as a hydraulic cylinder, an electric motor, and an A-type device to detect fluctuations in water level, which requires a large amount of equipment and requires a lot of maintenance.

また、取水塔の取水孔を開閉する機構に高性能な機器を
使用しても寒冷地方における温水取水は極めて効果が薄
く、このため、取水孔を開閉する機構にそれほど高い性
能は必要でなかった。
Furthermore, even if high-performance equipment is used in the mechanism that opens and closes the water intake hole of a water intake tower, the effectiveness of hot water intake in cold regions is extremely low, so the mechanism that opens and closes the water intake hole does not need to have such high performance. .

この発明は、上記のような問題点に鑑み、その問題点を
解決すべく創案されたものであって、その目的とすると
ころは、表層の温水以外の取水を防ぐにあたり、取水塔
の塔体に高さ方向に所定間隔で穿設された複数の取水孔
を水位による浮力を利用して無動力で且つ自動的に開閉
し、取水孔を開閉するための動力源を不要にすることの
できる多孔式取水塔を提供することにある。
This invention was devised in view of the above-mentioned problems and to solve the problems.The purpose of this invention is to prevent the intake of water other than surface hot water by reducing the intake tower body. Multiple water intake holes drilled at predetermined intervals in the height direction can be opened and closed automatically without power by using the buoyancy of the water level, eliminating the need for a power source to open and close the water intake holes. Our objective is to provide a porous water intake tower.

〔課題を解決するための手段〕 以上の目的を達成するためにこの発明は、取水塔の塔体
に高さ方向に所定間隔で複数の取水孔を各々穿設し、塔
体内部の水位に応じて昇降して各取水孔を開閉するフロ
ート弁を各々設け、水位に応じて昇降する外筒を塔体の
外周に摺動自在に設け、外筒にフロートと塵芥等の混入
を防くスクリーンを設けると共に、塔体の外周面と密接
する突出部を外筒の内周面に少なくとも一周形成した構
成よりなるものである。
[Means for Solving the Problems] In order to achieve the above object, the present invention has a plurality of water intake holes drilled in the tower body of a water intake tower at predetermined intervals in the height direction, so that the water level inside the tower body is Each float valve is installed to open and close each water intake hole by raising and lowering depending on the water level, and an outer cylinder is slidably installed on the outer periphery of the tower body, and the outer cylinder is slidably raised and lowered according to the water level.A screen is installed in the outer cylinder to prevent the float and dust from getting mixed in. In addition, at least one protrusion that is in close contact with the outer circumferential surface of the tower body is formed on the inner circumferential surface of the outer cylinder.

〔作用] 以上のような構成を有するこの発明は次のように作用す
る。
[Operation] The present invention having the above-described configuration operates as follows.

ずなわら、塔体内部の水位に応して昇降して各取水孔を
開閉するフロート弁を各々設けることにより、フロート
弁に作用する浮力を利用して2、策動力でしかも自動的
に取水孔を開閉するように作用し、また、水位に応して
昇降する外筒を塔体の外周に摺動自在に設け、外筒に張
出し部とフロートと塵芥等の混入を防ぐスクリーンを設
けることにより、表層部の温水の取水を効果的に行うと
共に取水孔が塵芥等によって塞がれるのを防ぐように作
用し、更にまた、塔体の外周面と密接する突出部を外筒
の内周面に少な(とも−周形酸することにより、下層の
低温水が取水孔に混入するのを防ぐように作用する。
By installing float valves that open and close each water intake hole by raising and lowering them according to the water level inside the tower, the buoyant force acting on the float valves can be used to automatically and automatically take in water. An outer cylinder that opens and closes the hole and that moves up and down according to the water level is slidably provided on the outer periphery of the tower body, and the outer cylinder is provided with an overhang, a float, and a screen to prevent dust, etc. from getting mixed in. This effectively takes in hot water from the surface layer and prevents the water intake hole from being blocked by dust, etc. Furthermore, the protrusion that is in close contact with the outer circumferential surface of the tower body is connected to the inner circumference of the outer cylinder. By applying a small amount of acid to the surface, it acts to prevent low-temperature water in the lower layer from entering the water intake hole.

〔実施例〕〔Example〕

以下、図面に記載の実施例に基づいてこの発明をより具
体的に説明する。
Hereinafter, the present invention will be described in more detail based on embodiments shown in the drawings.

ここで、第1図は右半分が取水塔の側面を示し左半分が
取水塔の断面を示す側断面図、第2図は要部の拡大断面
図である。
Here, the right half of FIG. 1 is a side sectional view showing a side surface of the water intake tower and the left half is a side sectional view showing a cross section of the water intake tower, and FIG. 2 is an enlarged sectional view of the main part.

図において、取水塔1は貯水池などの表層部から温水取
水を目的として設けられたものであり、例えば河川、湖
、貯水池などの水底から水面上方に向かって構築されて
いる。取水塔lの塔体2は内部が中空の筒状の構造物か
らなり、塔体2の内部の底面には塔体2内部に取水した
温水を外部に排出する排出通路2aが形成されている。
In the figure, a water intake tower 1 is provided for the purpose of taking hot water from the surface layer of a reservoir, etc., and is constructed, for example, from the bottom of a river, lake, reservoir, etc. upwards from the water surface. The tower body 2 of the water intake tower 1 is made of a hollow cylindrical structure, and a discharge passage 2a is formed at the bottom of the inside of the tower body 2 to discharge hot water taken into the tower body 2 to the outside. .

塔体2の側壁には塔体2の高さ方向に所定間隔で複数の
取水孔3が各々穿設されている。
A plurality of water intake holes 3 are formed in the side wall of the tower body 2 at predetermined intervals in the height direction of the tower body 2 .

取水孔3は塔体2の内部に通しる孔であり、貯水池など
の表層部の温水が塔体2の内部に流入するときの流入路
である。取水孔3の呑口には塵芥等の流入を防ぐために
スクリーン3aが取付けられている。各取水孔3の孔位
置は適宜、塔体2の周面方向に90度又は180度ずら
した状態で塔体2の高さ方向に所定間隔で穿設されてい
る。
The water intake hole 3 is a hole that passes through the inside of the tower body 2, and is an inflow path when hot water from a surface layer such as a reservoir flows into the inside of the tower body 2. A screen 3a is attached to the mouth of the water intake hole 3 to prevent dust and the like from flowing into the water intake hole 3. The positions of the water intake holes 3 are appropriately shifted by 90 degrees or 180 degrees in the circumferential direction of the tower body 2, and are bored at predetermined intervals in the height direction of the tower body 2.

取水孔3の内部側には取水孔接続管3bが接続されてい
る。取水孔接続管3bはその一端側が取水孔3に略水平
状態に接続され、途中で下向きに折曲され、その他端の
取水孔出口3Cは下向きに臨んでいる。この取水孔出口
3Cの開口縁には弁座3dが形成されている。
A water intake hole connecting pipe 3b is connected to the inside of the water intake hole 3. The water intake hole connecting pipe 3b has one end connected to the water intake hole 3 in a substantially horizontal state, is bent downward in the middle, and the water intake hole outlet 3C at the other end faces downward. A valve seat 3d is formed at the opening edge of the water intake hole outlet 3C.

フロート弁4は塔体2の内部の水位に応して昇降して取
水孔3の取水孔出口3Cを開閉するものであり、弁4a
、作動杆4b及びフロート4Cから構成されている。弁
4aは上下に移動して取水孔出口3Cを直接開閉し、又
弁座3dと密接するように弁4aの周縁はテーパ状に形
成されている。
The float valve 4 opens and closes the water intake hole outlet 3C of the water intake hole 3 by rising and falling according to the water level inside the tower body 2, and the valve 4a
, an operating rod 4b and a float 4C. The valve 4a moves up and down to directly open and close the water intake hole outlet 3C, and the periphery of the valve 4a is tapered so as to be in close contact with the valve seat 3d.

この弁4aの中央には作動杆4bが上向きに接続されて
いる。
An operating rod 4b is connected upward to the center of the valve 4a.

作動杆4bは上向きに設けられており、その上端側は取
水孔接続管3bを貫通して上方に突出している。この上
方に突出した部分には摺動管3eが上向きに接続されて
おり、作動杆4bはこの摺動管3eの内部を更に貫通し
ている。摺動管3eの上端にはフロート4cが下がるの
を阻止するストッパー3fが設けられている。
The operating rod 4b is provided facing upward, and its upper end side penetrates the water intake hole connection pipe 3b and projects upward. A sliding tube 3e is connected upward to this upwardly projecting portion, and the operating rod 4b further passes through the inside of this sliding tube 3e. A stopper 3f is provided at the upper end of the sliding tube 3e to prevent the float 4c from lowering.

摺動管3eを貫通した作動杆4bの上端にはフロート4
Cが取付けられている。フロー)4cは取水孔接続管3
bの上方に配置されており、水位に応じて作用する浮力
により昇降し、作動杆4bを介して連結されている弁4
aを上下に移動させて下向きの取水孔出口3cを開閉す
る構成になっている。また、フロート4cの上方及び側
方にはフロート保護盤5が取付けられていて、フロート
4Cを保護している。
A float 4 is attached to the upper end of the operating rod 4b that passes through the sliding pipe 3e.
C is installed. Flow) 4c is water intake hole connection pipe 3
A valve 4 is disposed above b, and is raised and lowered by buoyancy acting according to the water level, and is connected via an operating rod 4b.
A is moved up and down to open and close the downward water intake hole outlet 3c. Further, a float protection board 5 is attached above and on the side of the float 4c to protect the float 4C.

外筒6は塵芥等から取水孔3を保護すると共に表層部の
温水を取水孔3に円滑に流入させるためのもので、塔体
2の外周に摺動自在に設けられている。外筒6は塔体2
の外周を一周する側周盤6aからなり、外筒6の側周盤
6aは塔体2と一定の間隔があけられている。側周盤6
aの上端側は塔体2から外側に向けて略水平に折曲され
て越流盤6bが形成されている。越流盤6bは表層部の
温水の取水を効果的になすと共に温水が取水孔3へ流入
するときの安定を計る機能を果たしている。
The outer cylinder 6 protects the water intake hole 3 from dust and the like and allows the hot water in the surface layer to flow smoothly into the water hole 3, and is slidably provided on the outer periphery of the tower body 2. The outer cylinder 6 is the tower body 2
The outer cylinder 6 is composed of a side circumferential disk 6a that goes around the outer circumference of the outer cylinder 6, and the side circumferential disk 6a of the outer cylinder 6 is spaced apart from the tower body 2 by a constant distance. Side plate 6
The upper end side of a is bent approximately horizontally outward from the tower body 2 to form an overflow plate 6b. The overflow plate 6b functions to effectively take in hot water from the surface layer and to ensure stability when the hot water flows into the water intake hole 3.

越流盤6bの外縁にはスクリーン6cが全周に亘って設
けられている。このスクリーン6cは塵芥等の流入を阻
止する機能を果たしている。又スクリーン6Cの内側に
はフロート6dが塔体2の外側を囲むような状態に配置
されており、このフロー)6dは所定間隔で越流盤6b
上に配設された複数の連結板6eを介して外筒6に一体
的に連結されている。フロート6dは外筒6を水面上に
保つ役割を果たす。即ち、外筒6はこのフロート6dに
作用する浮力により、水位に応じて昇降して常に水面上
に位置する。
A screen 6c is provided at the outer edge of the overflow plate 6b over the entire circumference. This screen 6c functions to prevent the inflow of dust and the like. Furthermore, floats 6d are arranged inside the screen 6C so as to surround the outside of the tower body 2, and this flow 6d is passed through the overflow plate 6b at predetermined intervals.
It is integrally connected to the outer cylinder 6 via a plurality of connecting plates 6e disposed above. The float 6d serves to keep the outer cylinder 6 above the water surface. That is, the outer cylinder 6 is raised and lowered according to the water level by the buoyant force acting on the float 6d, and is always located above the water surface.

突出部7は下層の低温水が開口中の取水孔3へ混入する
のを防ぐ機能を果たすものであり、各取水孔3の少し下
側に対応する箇所の側周盤6aの内周面に突出形成され
ている。突出部7は側周盤6aの内周面を一周して形成
されており、これが上下に2段形成されている。突出部
7の突出量は、塔体2の外周を上下に摺動する外筒6が
塔体2の外周面に当接しない程度である。
The protrusions 7 serve to prevent the low-temperature water in the lower layer from entering the open water intake holes 3, and are provided on the inner peripheral surface of the side plate 6a at locations slightly below each intake hole 3. It is formed protrudingly. The protruding portion 7 is formed around the inner circumferential surface of the side circumferential plate 6a, and is formed in two stages, upper and lower. The amount of protrusion of the protruding portion 7 is such that the outer cylinder 6, which slides up and down on the outer periphery of the tower body 2, does not come into contact with the outer peripheral surface of the tower body 2.

突出部7の突出先端には例えばゴム板7aがその全周に
亘って取付けられている。ゴl、板7aは塔体2の外周
面と密着して水密性を高め、下層の低温水が側周盤6a
と塔体2との隙間を上昇して開口中の取水孔3に流入す
るのを阻止する。
For example, a rubber plate 7a is attached to the protruding tip of the protrusion 7 over its entire circumference. The plate 7a is in close contact with the outer peripheral surface of the tower body 2 to improve watertightness, and the low temperature water in the lower layer is connected to the side plate 6a.
This prevents the water from rising through the gap between the water and the tower body 2 and flowing into the open water intake hole 3.

また、突出部7の突出先端には例えばローラー7bが全
周に亘って所定間隔で複数取付けられている。このロー
ラー7bは塔体2の外周面との摩擦を少なくして、外筒
6が水位の変動に追従して塔体2の外周を昇降するとき
、その昇降が円滑に行われるようにする。
Furthermore, a plurality of rollers 7b, for example, are attached to the protruding tip of the protruding portion 7 at predetermined intervals over the entire circumference. This roller 7b reduces friction with the outer peripheral surface of the tower body 2, so that when the outer cylinder 6 moves up and down the outer circumference of the tower body 2 following fluctuations in the water level, the raising and lowering is performed smoothly.

次に上記実施例の構成に基づく作用について以下説明す
る。
Next, the effects based on the configuration of the above embodiment will be explained below.

塔体2の内外の水位が下がると、塔体2のある高さに位
置する取水孔3を開閉するフロート弁4のフロート4c
は相対的に内部の水面より上方に位置することになり、
フロー)4cには浮力が作用しないようになる。このた
め、フロート4Cは自重により降下するが、フロート4
cの下方には摺動管3eの上端に設けられたストッパー
3fがあるので、フロート4cはこのストッパー3fに
より、一定の高さだけ降下するとそれ以上降下するのが
防がれる。
When the water level inside and outside the tower body 2 falls, the float 4c of the float valve 4 opens and closes the water intake hole 3 located at a certain height of the tower body 2.
is located relatively above the internal water surface,
Flow) No buoyant force acts on 4c. Therefore, the float 4C descends due to its own weight, but the float 4C descends due to its own weight.
Since there is a stopper 3f provided at the upper end of the sliding tube 3e below c, the stopper 3f prevents the float 4c from descending any further once it has descended by a certain height.

他方、フロート4cが降下すると、作動杆4bを介して
その下方に連結された弁4aも一体となって降下する。
On the other hand, when the float 4c descends, the valve 4a connected below it via the operating rod 4b also descends together.

即ち、取水孔出口3cの弁座3dに密着していた弁4a
は降下して弁座3dから離れる。このため、取水孔出口
3cは開き、取水可能な状態となる1、従って、貯水池
などの水位が塔体2のある高さに位置する取水孔3より
高いときには、表層部の温水が取水孔3に流入する。
That is, the valve 4a that was in close contact with the valve seat 3d of the water intake hole outlet 3c
descends and leaves the valve seat 3d. Therefore, the water intake hole outlet 3c opens and becomes ready for water intake 1. Therefore, when the water level in a reservoir or the like is higher than the water intake hole 3 located at a certain height in the tower body 2, the hot water in the surface layer is transferred to the water intake hole 3. flows into.

表層部の温水はスクリーン6cを通過するときに、表層
部に浮遊する塵芥等はこのスクリーン6Cによって大部
分は防がれる。そじて、スクリーン6cを通過した温水
にはフロート6dの下方の越流盤6bに案内されて取水
孔3の人口まで浸入する。取水孔3の呑口にはスクリー
ン3aが設けられているので、スクリーン6Cを通過し
た温水に浮遊する一部の塵芥等はこのスクリーン3aで
防がれ、温水のみが取水孔3に流入する。取水孔3に流
入した表層部の温水は取水孔接続管3b内を流れて取水
孔出口3Cから塔体2の内部に流入する。そして、塔体
2の内部に流入した表層部の温水は塔体2の底部の排出
通路2aから外部に排出される。
When the hot water in the surface layer passes through the screen 6c, most of the dust and the like floating in the surface layer are prevented by the screen 6C. Then, the hot water that has passed through the screen 6c is guided to the overflow plate 6b below the float 6d and enters the water intake hole 3. Since a screen 3a is provided at the mouth of the water intake hole 3, some dust and the like floating in the hot water that has passed through the screen 6C is prevented by the screen 3a, and only hot water flows into the water intake hole 3. The hot water in the surface layer that has flowed into the water intake hole 3 flows through the water intake hole connection pipe 3b and flows into the inside of the tower body 2 from the water intake hole outlet 3C. Then, the hot water in the surface layer that has flowed into the inside of the tower body 2 is discharged to the outside from the discharge passage 2a at the bottom of the tower body 2.

このとき、取水孔3に流人する水は上部の越流盤6b以
外を通って流入することが阻止される。
At this time, water flowing into the water intake hole 3 is prevented from flowing through any path other than the upper overflow plate 6b.

即ち、越流盤6bの下方になる側周盤6aは、塔体2の
外側を一周しており、側方方向からの水の流入を阻止し
ている。また、取水孔3の少し下側に対応する箇所の側
周盤6aの内周面には突出部7か上下に2段形成されて
いて、この上下の各突出部7の先端のゴム板7aが塔体
2の外周面に密着して側周盤6aと塔体2との隙間の部
分を塞ぐ。
That is, the side peripheral plate 6a below the overflow plate 6b goes around the outside of the tower body 2, and prevents water from flowing in from the side. Further, on the inner peripheral surface of the side peripheral plate 6a at a location slightly below the water intake hole 3, two protrusions 7 are formed vertically, and a rubber plate 7a is provided at the tip of each of the upper and lower protrusions 7. is in close contact with the outer circumferential surface of the tower body 2 and closes the gap between the side peripheral plate 6a and the tower body 2.

このため、外筒6の下部から側周盤6aと塔体2との隙
間を上昇して取水孔3に流入しようとする下層の低温水
はこれらの上下の突出部7によってその上昇が確実に阻
止され、下層の低温水が取水孔3を通って塔体2の内部
に流入するのを防くことができる。
Therefore, the low-temperature water in the lower layer that is about to rise from the lower part of the outer cylinder 6 through the gap between the side circumferential plate 6a and the tower body 2 and flow into the water intake hole 3 is ensured by these upper and lower protrusions 7 to rise. This prevents low-temperature water in the lower layer from flowing into the tower body 2 through the water intake hole 3.

これに対して、塔体2の内外の水位が上がると、塔体2
のある高さに位置する取水孔3を開閉するフロート弁4
のフロート4Cは相対的に塔体2の内部の水位より下方
に位置することになり、フロート4cには浮力が作用す
る。このため、フロート4Cは上昇する。
On the other hand, when the water level inside and outside the tower body 2 rises, the tower body 2
Float valve 4 that opens and closes the water intake hole 3 located at a certain height
The float 4C is located relatively below the water level inside the tower body 2, and buoyancy acts on the float 4c. Therefore, the float 4C rises.

フロー)4Cが上昇すると、作動杆4bを介してその下
方に連結された弁4aも一体となって上昇する。そして
、上昇する弁4aはその上方の取水孔出口3Cの弁座3
dに密着し、取水孔出口3Cを閉じる。これにより、取
水が不可能な状態となる。
When the flow rate 4C rises, the valve 4a connected below it via the operating rod 4b also rises together. The rising valve 4a is the valve seat 3 of the water intake hole outlet 3C above it.
d and close the water intake hole outlet 3C. This makes water intake impossible.

このように、取水孔3の開閉はフロート弁4のフロート
4Cに作用する浮力によって無動力で[↓つ自動的に行
われる。
In this way, the water intake hole 3 is opened and closed automatically without power by the buoyant force acting on the float 4C of the float valve 4.

なお、この発明は上記実施例に限定されるものではなく
、この発明の精神を逸脱しない範囲で種々の改変をなし
得ることは勿論である。
It should be noted that this invention is not limited to the above embodiments, and it goes without saying that various modifications can be made without departing from the spirit of the invention.

〔発明の効果] 以1−の記載より明らかなように、この発明に係る多孔
式取水塔によれば、塔体内部の水位に応じて昇降して各
取水孔を開閉するフロート弁を各々設けたから、フ[1
−ト弁に作用する浮力を利用して、無動力でしかも自動
的に取水孔を開閉することができる。このため、取水孔
を開閉するための駆動装置を不要にできると共に駆動装
置を駆動させるための動力源も合わせて不要にでき、設
備費及び維持管理費を廉価にすることができる。
[Effects of the Invention] As is clear from the description in 1- below, the multi-hole water intake tower according to the present invention is equipped with float valves that open and close each intake hole by moving up and down according to the water level inside the tower body. Because of that, Fu [1
- The water intake hole can be opened and closed automatically without power by using the buoyant force acting on the gutter valve. Therefore, a drive device for opening and closing the water intake hole can be eliminated, and a power source for driving the drive device can also be eliminated, making it possible to reduce equipment costs and maintenance costs.

しかも、水位に応して昇降する外筒を塔体の外周に摺動
自在に設け、外筒にフロートと塵芥等の混入を防ぐスク
リーンを設けたから、外筒のスクリーンによって塵芥等
が取水孔まで流入するのを阻止でき、取水孔が塵芥等に
よって塞がれて取水ができなくなるのを防ぎ、円滑な取
水の維持を図ることができる。
In addition, an outer cylinder that moves up and down according to the water level is slidably installed on the outer periphery of the tower body, and a screen is installed on the outer cylinder to prevent the float and dust from entering. It is possible to prevent the water from flowing in, prevent the water intake hole from being blocked by debris, etc., and prevent water from being taken in, and maintain smooth water intake.

加えて、塔体の外周面と密接する突出部を外筒の内周面
に少なくとも一周形成したから、塔体の外周面と密接す
る突出部よって、外筒と取水塔の塔体との隙間から下層
の低温水が上昇して取水孔に混入するのを防ぐことがで
き、表層部からの温水取水の維持を図ることができる等
、極めて新規的有益なる効果を奏するものである。
In addition, since the protrusion that is in close contact with the outer circumferential surface of the tower body is formed at least once around the inner circumferential surface of the outer cylinder, the gap between the outer cylinder and the tower body of the water intake tower is reduced by the protrusion that is in close contact with the outer circumferential surface of the tower body. It is possible to prevent low-temperature water in the lower layer from rising and entering the water intake hole, and it is possible to maintain hot water intake from the surface layer, which is an extremely novel and beneficial effect.

【図面の簡単な説明】[Brief explanation of drawings]

図面はこの発明に係る多孔式取水塔の実施例を示すもの
であって、第1図は右半分が取水塔の側面を示し左半分
が取水塔の断面を示ず側断面図、第2図は要部の拡大断
面図である。 〔符号の説明〕 1:取水塔      2:塔体 2a:排出通路     3:取水孔 3a;スクリーン    3b:取水孔接続管3c:取
水孔出口    3d:弁座 3e:摺動管      3f;ストッパー4:フロー
ト弁    4a;弁 4b:作動杆      4c:フロート5:フロート
保護盤  6:外筒 6a:側周盤      61):越流盤6Cニスクリ
ーン    6d:フロート6e:連結板      
7:突出部 7a:ゴム板      7b;ローラー特許出願人 
  西田鉄工株式会社 代理人 弁理士    原 崎  正 第1図
The drawings show an embodiment of the porous water intake tower according to the present invention, in which the right half of FIG. 1 shows a side surface of the water intake tower and the left half shows a side sectional view without showing the cross section of the water intake tower, and FIG. is an enlarged sectional view of the main part. [Explanation of symbols] 1: Water intake tower 2: Tower body 2a: Discharge passage 3: Water intake hole 3a; Screen 3b: Water intake hole connection pipe 3c: Water intake hole outlet 3d: Valve seat 3e: Sliding pipe 3f; Stopper 4: Float Valve 4a; Valve 4b: Operating rod 4c: Float 5: Float protection plate 6: Outer cylinder 6a: Side circumferential plate 61): Overflow plate 6C Niscreen 6d: Float 6e: Connection plate
7: Projection 7a: Rubber plate 7b; Roller patent applicant
Nishida Iron Works Co., Ltd. Agent Patent Attorney Tadashi Harasaki Figure 1

Claims (1)

【特許請求の範囲】[Claims] 1、取水塔の塔体に高さ方向に所定間隔で複数の取水孔
を各々穿設し、塔体内部の水位に応じて昇降して各取水
孔を開閉するフロート弁を各々設け、水位に応じて昇降
する外筒を塔体の外周に摺動自在に設け、外筒にフロー
トと塵芥等の混入を防ぐスクリーンを設けると共に、塔
体の外周面と密接する突出部を外筒の内周面に少なくと
も一周形成したことを特徴とする多孔式取水塔。
1. A plurality of intake holes are drilled in the tower body of the water intake tower at predetermined intervals in the height direction, and each is equipped with a float valve that opens and closes each intake hole by raising and lowering according to the water level inside the tower body. An outer cylinder that can be raised and lowered accordingly is slidably installed on the outer periphery of the tower body, and a screen is provided on the outer cylinder to prevent floats and dust from getting mixed in, and a protrusion that comes into close contact with the outer peripheral surface of the tower body is installed on the inner periphery of the outer cylinder. A porous water intake tower characterized by having at least one circumference formed on its surface.
JP1119981A 1989-05-13 1989-05-13 Perforated intake tower Expired - Fee Related JP2581977B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1119981A JP2581977B2 (en) 1989-05-13 1989-05-13 Perforated intake tower

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1119981A JP2581977B2 (en) 1989-05-13 1989-05-13 Perforated intake tower

Publications (2)

Publication Number Publication Date
JPH02300411A true JPH02300411A (en) 1990-12-12
JP2581977B2 JP2581977B2 (en) 1997-02-19

Family

ID=14774958

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1119981A Expired - Fee Related JP2581977B2 (en) 1989-05-13 1989-05-13 Perforated intake tower

Country Status (1)

Country Link
JP (1) JP2581977B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013234492A (en) * 2012-05-09 2013-11-21 Toshiyuki Ochi Opening/closing device with float type automatic vacuum on-off valve
CN115075200A (en) * 2022-07-19 2022-09-20 浙江省水利水电勘测设计院有限责任公司 Hydraulic automatic opening and closing gate

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5235471A (en) * 1975-09-12 1977-03-18 Matsushita Electric Ind Co Ltd Switching circuit for electric cleaner
JPS5242599U (en) * 1975-09-20 1977-03-26
JPS57151428U (en) * 1981-03-16 1982-09-22

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5235471A (en) * 1975-09-12 1977-03-18 Matsushita Electric Ind Co Ltd Switching circuit for electric cleaner
JPS5242599U (en) * 1975-09-20 1977-03-26
JPS57151428U (en) * 1981-03-16 1982-09-22

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013234492A (en) * 2012-05-09 2013-11-21 Toshiyuki Ochi Opening/closing device with float type automatic vacuum on-off valve
CN115075200A (en) * 2022-07-19 2022-09-20 浙江省水利水电勘测设计院有限责任公司 Hydraulic automatic opening and closing gate

Also Published As

Publication number Publication date
JP2581977B2 (en) 1997-02-19

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