JP2002206496A - Gate pump - Google Patents

Gate pump

Info

Publication number
JP2002206496A
JP2002206496A JP2001004344A JP2001004344A JP2002206496A JP 2002206496 A JP2002206496 A JP 2002206496A JP 2001004344 A JP2001004344 A JP 2001004344A JP 2001004344 A JP2001004344 A JP 2001004344A JP 2002206496 A JP2002206496 A JP 2002206496A
Authority
JP
Japan
Prior art keywords
gate
water
motor pump
submersible motor
pump
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.)
Pending
Application number
JP2001004344A
Other languages
Japanese (ja)
Inventor
Yasuhiro Shiba
康弘 柴
Cho Fukushima
超 福嶋
Takayoshi Koyama
孝義 小山
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.)
Dengyosha Machine Works Ltd
DMW Corp
Original Assignee
Dengyosha Machine Works Ltd
DMW Corp
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 Dengyosha Machine Works Ltd, DMW Corp filed Critical Dengyosha Machine Works Ltd
Priority to JP2001004344A priority Critical patent/JP2002206496A/en
Publication of JP2002206496A publication Critical patent/JP2002206496A/en
Pending legal-status Critical Current

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  • Control Of Non-Positive-Displacement Pumps (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Control Of Positive-Displacement Pumps (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a gate pump to be provided in a water passage without requiring a reverse flow preventing valve and capable of saving power consumption. SOLUTION: An underwater motor pump 12 and a piping 18 are arranged at the intake side of a water cutoff gate 10, and the water sucked from the intake side of the water shutoff gate 10 is drained to the drain side of the water shutoff gate 10. The piping 18 is raised higher than the highest water level Hmax of the drain side, and is folded, and a drain port 14 is opened in the drain side at the same height position as with the operation stop water level of the underwater motor pump 12 or at a lower position than that. A switching valve to be communicated with the atmospheric air is provided in a rise part 18a of the piping 18 at a position higher than the highest water level Hmax of the drain side. The switching valve 20 is closed, when starting the operation of the underwater motor pump 12, and the switching valve 20 is opened, when stopping the operation thereof to cause the water inside of the rise part 18a to fall.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、水路に設けられ、
逆流防止弁が不要でしかも省消費電力としたゲートポン
プに関するものである。
TECHNICAL FIELD The present invention is provided in a waterway,
The present invention relates to a gate pump that does not require a check valve and that consumes less power.

【0002】[0002]

【従来の技術】水路に設けられるゲートポンプは、止水
ゲートの外水位が低いときは止水ゲートを上げて水路を
開放して自然流下により排水し、外水位が高いときは止
水ゲートを下げて水路を閉めて、止水ゲートに配設した
水中モータポンプにより外水位側に排水を行う。ここ
で、外水位が高くて止水ゲートの吐出側の水位が吸込側
の水位より高い場合に、水中モータポンプの運転停止に
より逆流を生ずる虞がある。そこで、従来はこの逆流を
防止すべく、逆流防止弁を設け、または吐出側の吐出口
を外水位の最高水位よりも高い位置に開口して逆流防止
弁を不要とする技術が提案されている。
2. Description of the Related Art A gate pump provided in a water channel raises the water stop gate when the external water level of the water stop gate is low, opens the water channel and drains the water by natural flow, and when the external water level is high, turns off the water stop gate. It is lowered to close the water channel, and the water is drained to the outside water level by a submersible motor pump installed at the water stop gate. Here, when the external water level is high and the water level on the discharge side of the water stop gate is higher than the water level on the suction side, there is a possibility that backflow may occur due to the stoppage of the operation of the submersible motor pump. Therefore, in order to prevent this backflow, a technique has been proposed in which a backflow prevention valve is provided or a discharge port on the discharge side is opened at a position higher than the highest water level of the outside water level, thereby eliminating the need for the backflow prevention valve. .

【0003】[0003]

【発明が解決しようとする課題】従来の逆流防止弁を設
ける技術では、止水ゲートが上下動されるのにともな
い、逆流防止弁が水没した状態と大気に晒される状態と
が繰り返され、腐食などにより不具合が生じ易い。ま
た、この逆流防止弁は、水位差による圧力で止水してお
り、水位差が小さいときは止水性能が必ずしも良好でな
い。さらに、弁体にゴミなどが挟まって止水機能が低下
する場合がある。
In the conventional technique of providing a check valve, as the water stop gate is moved up and down, the check valve is repeatedly submerged and exposed to the atmosphere, resulting in corrosion. Problems are likely to occur due to such factors. Further, the check valve is stopped by the pressure due to the difference in water level, and when the difference in water level is small, the water stopping performance is not always good. Further, dust may be caught in the valve body, and the water stopping function may be reduced.

【0004】また、吐出側の吐出口を外水位の最高水位
よりも高い位置に開口する技術では、逆流することがな
く、逆流防止弁を必要とせず、上述のごとき不具合を生
じる虞がない。しかるに、図4に示すごとく、止水ゲー
ト10の吸込側に設けられた水中モータポンプ12は、
吸込側の水位Hから吐出側の最高水位Hmaxよりもさ
らに高い位置に設けられた吐出口14の高さまでのh1
の実揚程で運転されなければならない。そこで、水中モ
ータポンプ12の消費電力が、多いものとなっている。
In the technique of opening the discharge port on the discharge side to a position higher than the maximum water level of the outside water level, there is no backflow, no backflow prevention valve is required, and there is no possibility of causing the above-mentioned problems. However, as shown in FIG. 4, the submersible motor pump 12 provided on the suction side of the water stop gate 10 is
H1 from the water level H on the suction side to the height of the discharge port 14 provided at a position higher than the maximum water level Hmax on the discharge side.
Must be operated at the actual head. Therefore, the power consumption of the submersible motor pump 12 is large.

【0005】本発明は、上述のごとき従来技術の事情に
鑑みてなされたもので、逆流防止弁を必要とせず、しか
も省消費電力としたゲートポンプを提供することを目的
とする。
The present invention has been made in view of the circumstances of the prior art as described above, and has as its object to provide a gate pump that does not require a check valve and that consumes less power.

【0006】[0006]

【課題を解決するための手段】かかる目的を達成するた
めに、本発明のゲートポンプは、水中モータポンプとこ
れに連通する配管を止水ゲートに配設し、前記水中モー
タポンプと配管により、前記止水ゲートの吸込側から吸
い上げた水を前記止水ゲートの吐出側に排出するゲート
ポンプにおいて、前記配管を前記吐出側の最高水位より
高く立ち上げるとともに折り返してその吐出口を前記水
中モータポンプの運転停止水位とほぼ同じ高さまたはそ
れより低い位置で前記吐出側に開口し、しかも前記配管
の前記吐出側の最高水位よりも高い位置に大気と連通し
得る開閉バルブを設けて構成されている。
In order to achieve the above object, a gate pump according to the present invention is provided with a submersible motor pump and a pipe communicating with the submersible motor pump at a water stop gate. In a gate pump for discharging water sucked from a suction side of the water stop gate to a discharge side of the water stop gate, the pipe is raised above the maximum water level of the discharge side and turned up to return the discharge port to the submersible motor pump. An opening / closing valve that opens to the discharge side at a position substantially equal to or lower than the operation stop water level and that can communicate with the atmosphere at a position higher than the highest water level at the discharge side of the pipe is provided. I have.

【0007】そして、前記水中モータポンプを前記止水
ゲートの吸込側にその吸込孔が運転開始水位で水没また
は半水没するように配設し、この水中モータポンプの吐
出孔に前記配管の一端を連通して構成しても良い。
The submersible motor pump is disposed on the suction side of the water stop gate such that its suction hole is submerged or semi-submerged at the operation start water level, and one end of the pipe is connected to the discharge hole of the submersible motor pump. It may be configured to communicate.

【0008】さらに、制御手段で、前記水中モータポン
プの運転にともない前記開閉バルブを閉塞し、前記水中
モータポンプの停止にともない前記開閉バルブを開成す
るように構成することも可能である。
Further, it is possible that the control means closes the on-off valve when the submersible motor pump is operated, and opens the on-off valve when the submersible motor pump is stopped.

【0009】[0009]

【発明の実施の形態】以下、本発明の一実施例を図1な
いし図3を参照して説明する。図1は、本発明のゲート
ポンプの一実施例の側断面図である。図2は、図1のA
矢視要部構造図である。図3は、本発明のゲートポンプ
が省消費電力であることを説明する図である。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a side sectional view of one embodiment of the gate pump of the present invention. FIG.
It is an arrow main part structural diagram. FIG. 3 is a diagram illustrating that the gate pump of the present invention consumes less power.

【0010】図1および図2において、水路に設けられ
た止水ゲート10が上下動されて水路の開放および遮断
がなされる。そして、止水ゲート10の上流側である吸
込側に、水中モータポンプ12が着脱装置16により配
設固定される。水中モータポンプ12の吸込孔は、運転
開始水位H1で水没または半水没される位置に開口され
る。この水中モータポンプ12の吐出孔に、配管18の
一端が連通される。この配管18は、止水ゲート10の
下流側である吐出側の最高水位Hmaxより高い位置ま
で立ち上げられ、さらに折り返されて吐出口14が、水
中モータポンプ12の運転停止水位H2とほぼ同じ高さ
またはそれより低い位置で、止水ゲート10に吐出側に
向けて開口される。さらに、配管18の吐出側の最高水
位Hmaxより高い位置に立ち上げられた部分18a
に、大気に連通し得る開閉バルブ20が配設され、配管
18内と大気を連通および遮断制御する。そして、制御
手段22は、水中モータポンプ12を運転開始するとと
もに開閉バルブ20を閉塞し、また水中モータポンプ1
2を運転停止するとともに開閉バルブ20を開成する連
動した制御を行う。なお、上記実施例では、水中モータ
ポンプ12の吸込孔が、吸込側の吸込口として作用して
いる。
1 and 2, a water stop gate 10 provided in a waterway is moved up and down to open and close the waterway. Then, the submersible motor pump 12 is disposed and fixed to the suction side, which is the upstream side of the water stop gate 10, by the attaching / detaching device 16. The suction hole of the submersible motor pump 12 is opened at a position where it is submerged or semi-submerged at the operation start water level H1. One end of a pipe 18 communicates with a discharge hole of the submersible motor pump 12. The pipe 18 rises to a position higher than the maximum water level Hmax on the discharge side, which is the downstream side of the water stop gate 10, and is turned up again so that the discharge port 14 has a height substantially equal to the operation stop water level H 2 of the submersible motor pump 12. At a lower position or lower, the water stop gate 10 is opened toward the discharge side. Further, the portion 18a which is raised at a position higher than the maximum water level Hmax on the discharge side of the pipe 18
Further, an opening / closing valve 20 that can communicate with the atmosphere is provided, and communicates and shuts off the inside of the pipe 18 with the atmosphere. The control means 22 starts the operation of the submersible motor pump 12 and closes the on-off valve 20.
2 and the linked control for opening the on-off valve 20 is performed. In the above embodiment, the suction hole of the submersible motor pump 12 functions as a suction port on the suction side.

【0011】かかる構成において、吸込側の水位が水中
モータポンプ12の運転開始水位H1を超えると、水中
モータポンプ12が運転開始されるとともに開閉バルブ
20が閉塞され、吸込側から吐出側へ水が排出される。
そして、吸込側の水位が運転停止水位H2まで低下する
と、水中モータポンプ12が運転停止するとともに開閉
バルブ20が開成される。すると、配管18の立ち上が
り部18a内から落水され、サイホン効果が失われて、
吐出側の水位が高くても吸込側に逆流することがない。
そして、水中モータポンプ12の運転中は、図3に示す
ごとく、吸込側の水位Hに対して吐出側の水位が最高水
位のHmaxであっても、必要となる実揚程は水位差の
h2である。また、吐出側の水位がH3であれば、必要
となる実揚程h3は、吸込側の水位Hとの水位差のh3
である。したがって、本発明のゲートポンプにあって
は、図4に示す従来例に比較して、水中モータポンプ1
2を運転するための消費電力が少なくて足りる。
In this configuration, when the water level on the suction side exceeds the operation start water level H1 of the submersible motor pump 12, the operation of the submersible motor pump 12 is started and the on-off valve 20 is closed, so that water flows from the suction side to the discharge side. Is discharged.
When the water level on the suction side drops to the operation stop water level H2, the operation of the submersible motor pump 12 is stopped and the on-off valve 20 is opened. Then, water is dropped from the rising portion 18a of the pipe 18, the siphon effect is lost,
Even if the water level on the discharge side is high, there is no backflow to the suction side.
Then, during operation of the submersible motor pump 12, as shown in FIG. 3, even when the water level on the discharge side is Hmax, which is the highest water level with respect to the water level H on the suction side, the required actual head is the water level difference h2. is there. If the water level on the discharge side is H3, the required actual head h3 is the difference h3 between the water level H and the water level H on the suction side.
It is. Therefore, in the gate pump of the present invention, compared to the conventional example shown in FIG.
2 requires low power consumption.

【0012】なお、上記実施例では水中モータポンプ1
2および配管18を止水ゲート10の吸込側に設けた
が、かかる構造に限られない。例えば、止水ゲート10
を跨ぐようにして配管18を配設し、この配管18の吐
出側に水中モータポンプ12の吸込孔を連通するように
構成しても良い。また、止水ゲート10に吸込側に向け
て吸込口を開口し、この吸込口に止水ゲート10の吐出
側に配設した水中モータポンプ12の吸込孔を連通さ
せ、この水中モータポンプ12の吐出孔に吐出側に設け
た配管18を連通させて構成しても良い。そして、上記
実施例では水中モータポンプ12の運転停止水位H2と
ほぼ同じ高さまたはそれより低い位置で吐出側に吐出口
14を開口することで、この吐出側の吐出口14の高さ
を、吸込側から水を吸い上げることのできる吸込側の最
も低い水位の位置としている。そこで、止水ゲート10
を跨ぐようにして設けられた配管18の吐出側に水中モ
ータポンプ12を設けるならば、吐出口14としての水
中モータポンプ12の吐出孔の高さは、配管18の吸込
側の吸込口の高さにおおよそ位置していれば良い。ま
た、止水ゲート10に吸込側に向けて開口して設けた吸
込口に、止水ゲート10の吐出側に設けた水中モータポ
ンプ12の吸込孔を連通させるものにあっては、配管1
8の吐出口14を止水ゲート10に設けた吸込口とほぼ
同じ高さに設定すれば良い。
In the above embodiment, the submersible motor pump 1
2 and the pipe 18 are provided on the suction side of the water stop gate 10, but the invention is not limited to such a structure. For example, water stop gate 10
May be arranged so as to straddle the pipe, and the suction side of the submersible motor pump 12 may communicate with the discharge side of the pipe 18. Further, a suction port is opened toward the suction side of the water stop gate 10, and a suction hole of a submersible motor pump 12 disposed on the discharge side of the water stop gate 10 is connected to the suction port. The pipe 18 provided on the discharge side may communicate with the discharge hole. In the above embodiment, the discharge port 14 is opened on the discharge side at a position substantially equal to or lower than the operation stop water level H2 of the submersible motor pump 12, so that the height of the discharge port 14 on the discharge side is increased. It is located at the lowest water level on the suction side where water can be sucked up from the suction side. Therefore, the water stop gate 10
If the submersible motor pump 12 is provided on the discharge side of a pipe 18 provided so as to straddle, the height of the discharge hole of the submersible motor pump 12 as the discharge port 14 is equal to the height of the suction port on the suction side of the pipe 18. It is good if it is located roughly. In the case where the suction port of the submersible motor pump 12 provided on the discharge side of the water stop gate 10 communicates with the suction port provided to the water stop gate 10 toward the suction side, the pipe 1
The discharge port 14 of 8 may be set at substantially the same height as the suction port provided in the water stop gate 10.

【0013】[0013]

【発明の効果】以上説明したように本発明のゲートポン
プは構成されているので、以下のごとき格別な効果を奏
する。
Since the gate pump of the present invention is constituted as described above, the following special effects can be obtained.

【0014】請求項1記載のゲートポンプは、吐出側に
開口する吐出口を水中モータポンプの運転停止水位とほ
ぼ同じ高さまたはそれより低い位置としたので、水中モ
ータポンプの運転中の実揚程は、吸込側と吐出側の水位
差であり、従来の逆流防止弁を不要とする構造に比較し
て、水中モータポンプの消費電力が少なくて足りる。も
って、省消費電力である。また、水中モータポンプが運
転停止すれば、開閉バルブを開成して配管の立ち上がり
部内を落水させるので、サイホン効果が失われ、吐出側
から吸込側に逆流することがない。
In the gate pump according to the first aspect of the present invention, the discharge port opened to the discharge side is located at substantially the same height or lower than the operation stop water level of the submersible motor pump. Is the water level difference between the suction side and the discharge side, and the power consumption of the submersible motor pump is small compared to the conventional structure that does not require a check valve. Thus, power consumption is reduced. Further, when the operation of the submersible motor pump is stopped, the on-off valve is opened to drop water in the rising portion of the pipe, so that the siphon effect is lost, and there is no backflow from the discharge side to the suction side.

【0015】請求項2記載のゲートポンプは、止水ゲー
トの吸込側に水中モータポンプを吸込孔が運転開始水位
で水没または半水没するように配設したので、簡単な構
造で確実に吸込側から水を吸い上げて吐出側に排出する
ことができる。
In the gate pump according to the second aspect, the submersible motor pump is disposed on the suction side of the water stop gate such that the suction hole is submerged or semi-submerged at the operation start water level, so that the suction side is reliably formed with a simple structure. Can be sucked up and discharged to the discharge side.

【0016】請求項3記載のゲートポンプは、水中モー
タポンプと開閉バルブとを連動させて制御することで、
確実に、水中モータポンプの運転中は開閉バルブが閉塞
され、水中モータポンプが停止されると開閉バルブが開
成される。そして、かかる制御は極めて簡単に行うこと
ができる。
In the gate pump according to the third aspect, the submersible motor pump and the on-off valve are controlled in conjunction with each other,
During operation of the submersible motor pump, the open / close valve is closed, and when the submersible motor pump is stopped, the open / close valve is opened. And such control can be performed very easily.

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

【図1】本発明のゲートポンプの一実施例の側断面図で
ある。
FIG. 1 is a side sectional view of an embodiment of the gate pump of the present invention.

【図2】図1のA矢視要部構造図である。FIG. 2 is a structural view of a main part viewed from an arrow A in FIG. 1;

【図3】本発明のゲートポンプで省消費電力であること
を説明する図である。
FIG. 3 is a diagram illustrating that the gate pump of the present invention consumes less power.

【図4】従来の逆流防止弁を不要としたゲートポンプで
実揚程が高くて消費電力が大きくなることを説明する図
である。
FIG. 4 is a diagram illustrating that a conventional gate pump that does not require a check valve has a large actual head and consumes a large amount of power.

【符号の説明】[Explanation of symbols]

10 止水ゲート 12 水中モータポンプ 14 吐出口 18 配管 18a 立ち上がり部 20 開閉バルブ 22 制御手段 DESCRIPTION OF SYMBOLS 10 Water stop gate 12 Submersible motor pump 14 Discharge port 18 Piping 18a Rising part 20 Opening / closing valve 22 Control means

───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 FI テーマコート゛(参考) F04D 15/00 F04B 49/02 311 (72)発明者 小山 孝義 静岡県三島市三好町3番27号 株式会社電 業社機械製作所三島事業所内 Fターム(参考) 3H020 AA01 AA08 BA02 BA03 BA12 CA00 DA08 3H045 AA06 AA09 AA12 AA23 AA40 BA03 BA07 BA32 CA28 DA11──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. 7 Identification symbol FI Theme coat ゛ (Reference) F04D 15/00 F04B 49/02 311 (72) Inventor Takayoshi Koyama 3-27 Miyoshi-cho, Mishima-shi, Shizuoka Stock F-term (reference) in Mishima Works, Electric Machinery Company 3H020 AA01 AA08 BA02 BA03 BA12 CA00 DA08 3H045 AA06 AA09 AA12 AA23 AA40 BA03 BA07 BA32 CA28 DA11

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】 水中モータポンプとこれに連通する配管
を止水ゲートに配設し、前記水中モータポンプと配管に
より、前記止水ゲートの吸込側から吸い上げた水を前記
止水ゲートの吐出側に排出するゲートポンプにおいて、
前記配管を前記吐出側の最高水位より高く立ち上げると
ともに折り返してその吐出口を前記水中モータポンプの
運転停止水位とほぼ同じ高さまたはそれより低い位置で
前記吐出側に開口し、しかも前記配管の前記吐出側の最
高水位よりも高い位置に大気と連通し得る開閉バルブを
設けて構成したことを特徴とするゲートポンプ。
1. A submersible motor pump and a pipe connected to the submersible motor pump are disposed in a water stop gate, and the water sucked from a suction side of the water stop gate is discharged to the discharge side of the water stop gate by the submersible motor pump and the pipe. In the gate pump discharging to
The pipe is raised above the highest water level on the discharge side and turned up, and its discharge port is opened to the discharge side at a position substantially equal to or lower than the operation stop water level of the submersible motor pump. A gate pump provided with an on-off valve capable of communicating with the atmosphere at a position higher than the highest water level on the discharge side.
【請求項2】 請求項1記載のゲートポンプにおいて、
前記水中モータポンプを前記止水ゲートの吸込側にその
吸込孔が運転開始水位で水没または半水没するように配
設し、この水中モータポンプの吐出孔に前記配管の一端
を連通して構成したことを特徴とするゲートポンプ。
2. The gate pump according to claim 1, wherein
The submersible motor pump was arranged on the suction side of the water stop gate such that the suction hole was submerged or semi-submerged at the operation start water level, and one end of the pipe was connected to the discharge hole of the submersible motor pump. A gate pump characterized in that:
【請求項3】 請求項1または2記載のゲートポンプに
おいて、制御手段で、前記水中モータポンプの運転にと
もない前記開閉バルブを閉塞し、前記水中モータポンプ
の停止にともない前記開閉バルブを開成するように構成
したことを特徴とするゲートポンプ。
3. The gate pump according to claim 1, wherein the control means closes the on-off valve with the operation of the submersible motor pump and opens the on-off valve with the stop of the submersible motor pump. A gate pump characterized in that:
JP2001004344A 2001-01-12 2001-01-12 Gate pump Pending JP2002206496A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2001004344A JP2002206496A (en) 2001-01-12 2001-01-12 Gate pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2001004344A JP2002206496A (en) 2001-01-12 2001-01-12 Gate pump

Publications (1)

Publication Number Publication Date
JP2002206496A true JP2002206496A (en) 2002-07-26

Family

ID=18872547

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2001004344A Pending JP2002206496A (en) 2001-01-12 2001-01-12 Gate pump

Country Status (1)

Country Link
JP (1) JP2002206496A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005054684A1 (en) * 2003-12-03 2005-06-16 Ebara Corporation Pump system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005054684A1 (en) * 2003-12-03 2005-06-16 Ebara Corporation Pump system

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