JP3603167B2 - Water tank equipment to remove or wash sand with stored water - Google Patents
Water tank equipment to remove or wash sand with stored water Download PDFInfo
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- JP3603167B2 JP3603167B2 JP28113694A JP28113694A JP3603167B2 JP 3603167 B2 JP3603167 B2 JP 3603167B2 JP 28113694 A JP28113694 A JP 28113694A JP 28113694 A JP28113694 A JP 28113694A JP 3603167 B2 JP3603167 B2 JP 3603167B2
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- water
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/20—Controlling water pollution; Waste water treatment
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Description
【0001】
【産業上の利用分野】
本発明は各種の固液混合液、汚水、泥水、雨水、雑排水等の排水ピット、及び下水道に於ける中継ポンプ設備等のように各種固形物が混入する水槽の排水設備に関するものである。
【0002】
【従来の技術】
砂等の固形物が混入する排水ピット等のポンプの水槽設備では、混入固形物が徐々に沈澱堆積してポンプの吸水作用を困難にし、やがて吸込口の閉塞等の支障を生じる、従来は攪拌羽根付きのポンプを使用したり、圧力水で噴射攪拌したり、水槽に流入する流入水勢を利用して攪拌したり、或いは定期的に水槽の除泥作業を行ったりしている。
【0003】
【発明が解決しようとする課題】
例えば水中ポンプの駆動軸を吸込口下方にまで突出させ、これに攪拌羽根を設けた攪拌羽根付きポンプでは、布切れ、ビニールが混入すれば巻き付きを生じ運転に支障し、又その構造から攪拌羽根への固形物の衝突と摩耗の為に振動を生じやすく、概してポンプ寿命が短い欠点がある。
圧力水を噴射し攪拌する方法ではすべてに対応しやすいけれども、使用する圧力水源と運転コストが問題になる。
又、流入水勢を利用して攪拌する方法、例えば出願人特許No1395429、実用新案No1760342では、常時ある程度の流入水がある場合には非常に有効であるが、流入水量が少ない時には充分な攪拌力を得難くなり、また平成6年9月7日に出願した”分割した水槽の水位差で除砂するポンプ設備”では、水位差を充分に取れず噴射力を得難い場合がある等の問題点がある。
【0004】
【課題を解決するための手段】
本発明ではこれらの問題を解決するために、水槽内、叉は水槽近くに貯留水槽を設け、該貯留水槽上部には槽内空気を排出する排気弁を備えた排気管と、水槽内水位が低下したときに外部空気を貯留水槽内に吸入する為の下方に伸延した吸気管を設ける、また、貯留水槽の底部には噴射ノズルに接続する排出口を開口する。
ポンプを設置する水槽のポンプホール部は底面と周囲の壁面との角部を、水流が滑らかに流動するように傾斜面、或いは円弧状に形成し、噴射ノズルを攪拌回流の方向が概略一定方向を指向するように配置する。
【0005】
また水槽への流入水は水路樋や飛散防止板等を利用して、攪拌回流を助長するように流入させる。
【0006】
水槽底面を洗浄する目的の場合に於いては、水槽内にすり鉢状、或いは、断面が逆台形状の多角形ポンプホールを設け、該ポンプホール中央付近に円錐台座を設けポンプを該台座上、或いは台座上方に設置して、しかも該ポンプホールに流下するように傾斜を付けた水槽底面の外周囲に、貯留水槽水を噴射するノズルを配列する。
水槽への流入水は水路樋や水槽底面に水路溝を開設して、流入水流がボンプホールの円錐台座、及び対向周壁面に衝突し、反転上昇、或いは反転回流するように投入する。
【0007】
【作円】
前記するように構成したポンプの水槽設備を高水位起動、低水位停止の自動運転を行った場合、ポンプが排水を終えて停止した低水位から、水槽への流入水によって水槽水位が上昇するに連れ、貯留水槽内水位も噴射ノズルから逆流する水槽水で、排気弁を押し開き排気しながら上昇し、水槽の最高水位に近い水位まで貯留する。
尚、水槽水位の上昇速度が非常に早い水槽にあっては、流入弁を備えた流入口を貯留水槽の下部に開口して貯留速度を早める事もできる。
【0008】
水槽水位が上限水位に達しポンプが起動し、揚水を開始すれば水槽内水位は下降し、水位が貯留水槽の吸気管開口部に達し外気を吸入するようになれば、貯留水槽水は水槽水位と貯留水槽内水位の圧力差で、水槽内に配置された噴射ノズルより噴出し、貯留水量の少なくなったポンプホール部水を強力に攪拌回流させ、ポンプホール内底に沈澱堆積していた固形物や、水面に浮遊していた浮遊物を巻き込み混合して揚水と共に水槽外に排出する。
【0009】
水槽底面を洗浄する場合にあっては、ポンプの揚水に依って水槽水位が降下し底面周囲に配列した噴射ノズルから貯留水槽水が噴出され、水槽底面を洗浄流下した洗浄水は、ポンプホール内に落下流入して円錐台座で反転上昇、混合しながらポンプに吸引される。
水槽への流入水も水槽水位の降下と共に開設した水路溝を流下するようになり、水路溝内の堆積物を混合流下させながらポンプホールに至って、円錐台座に衝突上昇、或いは対向壁面に上昇反転して回流し、貯留水槽水の流入と相乗して沈澱固形物、或いは浮遊物を混合して排除する。
【0010】
尚、混入固形物を高濃度に取り扱う設備にあっては、水槽への流入水だけで、極低水位連続運転をする事が滞留による沈澱と堆積を防止できる最良の方法であるが、ポンプを極低水位で連続運転する事は空気を吸い込みエアーロック現象(羽根車の吸込口に空気層が出来、ポンプが揚水不能となる現象)を生じやすい、本発明設備の場合ポンプホール中央の円錐台座に流入水の一部が衝突上昇して、ポンプ吸込口に噴入する事と攪拌のためにエアーロック現象を破壊し防止できる。
【0011】
【実施例1】
以下本発明を実施例図を参照して説明する。
図1、に縦断面図、図2に内部平面図を示す第1実施例に於いて、水槽1内のポンプホールAより上位に貯留水槽Cを設け、該貯留水槽Cの上部側方には図3に示す接続管4で接続連通した、吸気管5を下方に伸延し開口させ、上方にはボール6を備えた排気弁を介して排気管8に接続開放する。
ポンプ16、16’を設置するポンプホールAの底面2は周囲を傾斜面11と円弧で滑らかに形成し、ポンプホールA内の攪拌回流が滑らかに行えるようにする。
【0012】
ポンプ16、16’の揚水は吐出管12に依って水槽1の上方外部に排出され、水槽1への流入水は流入口13から傾斜して製作した貯留水槽Cの上板14を流下し、飛散防止板15に案内されてポンプホールAの噴射ノズル10側に落下流入する。
また貯留水槽Cの底部には3個の流出口9を開口させ、それぞれ噴射ノズル10に接続開口する。
【0013】
【実施例2】
図4に断面図、図5に平面図を示す第2実施例では、水槽21の内底面にポンプホールAをすり鉢状に開設し、そのほぼ中央に円錐状の台座25を形成してポンプ26を設置する。
流入口27、27’からの流入水に混入する固形物がなるべく散乱しないように、流入口27、27’の直下部水槽底面に流下水路D,及びこれに連なりポンプホールAに導入する水路Eを開設する。
該水路EはポンプホールAの中心に向けて投入しても良いが、本実施例のように幾分偏心して流入させる方が幾分周回して効果的である。
【0014】
更に、水槽21内には第1実施例と同じ機能の密閉された貯留水槽Cを仕切壁23、密閉蓋22で形成し設置すると共に、ポンプホールA周辺の水槽の底面24の外周囲には貯留水槽Cに連なる噴射ノズル30を配列し水槽底面24の噴射洗浄を行う。
【0015】
【発明の効果】
以上述べてきたように本発明では、水槽に設置した貯留水槽に噴射ノズルより逆流した比較的にきれいな、最高水位に近い水位の水槽水を貯留する事ができ、その噴出初速度は、貯留水槽水位とポンプホール水位、或いは噴射ノズルとの水位差が、0.5 mでは、噴流初速度2.91m/s、水位差1.0mでは噴流初速度は4.12m/s程度が得られ、別の動力源をまったく使用する事なしに、しかもポンプホールの水量が減少した最も効果的な時点で噴出させて、水槽底面に沈澱堆積する固形物を回流攪拌して浮遊させ排除でき、また、上下方向の回流攪拌、或いは水平方向の反転攪拌を行う事で、水槽表面に浮遊する浮遊物も回流水に効果的に巻き込み排出出来るため、下水道設備等では悪臭の発生を防止する効果もある。
【0016】
第1実施例に於いては出願人の実用新案No1760342の思想を取り入れ流入水勢を利用した攪拌回流を併せて行うようにした為に、水槽への流入水量の多い時に於いても、流入水量の極端に少ない自動運転時に於いても安定した除砂、除泥が行える。
また、この第1実施例の形態に於いても極低水位の連続運転を行う場合、案内されて流入する流入水の一部がポンプ吸込口に噴入されるように、ポンプ吸込口下方付近に板状、或いは山形の突起物を設ける事で第2実施例と同様にエアーロックの解消が出来る。
【0017】
第2実施例に於いては出願人の特許No1395429、及び実用新案No1760342の思想を取り入れた設備としたために、それぞれの機能を発揮するばかりでなく、特に流入水のみに依る極低水位連続運転を行う場合のエアーロック現象を解除して安定運転ができる効果は大きい。
また、高水位始動、低水位停止の自動運転時に於いても、流入口下方からポンプホールまで設けた水路溝の為に、混入固形物が水槽全体に散乱するのを防止でき、しかも運転毎に確実に、水槽への流入水で流下攪拌して効果的に排除できる。
【図面の簡単な説明】
【図1】第1実施例の断面図である。
【図2】第1実施例の内部平面図である。
【図3】貯留水槽の吸気管、排気バルブ部分の断面図である。
【図4】第2実施例の断面図である。
【図5】第2実施例の平面図ある。
【図6】貯留水槽流入口の断面図である。
【符号の説明】
1、21 水槽
3、 貯留水槽殻
10、 噴射ノズル
12、 送水管
13、27、27’ 流入口
15、 飛散防止板
16、16’、26 ポンプ
23 仕切壁
25、 円錐台座
A、 ポンプホール
B、 水槽
C、 貯留水槽
a,b,c 起動、停止、警報のフロートスイッチである。
図中の矢印は気体、液体の流れを示す。[0001]
[Industrial applications]
The present invention relates to a drainage pit for various solid-liquid mixed liquids, sewage, muddy water, rainwater, miscellaneous drainage, and the like, and a drainage device for a water tank in which various solids are mixed, such as a relay pump facility in a sewer.
[0002]
[Prior art]
In pump tank facilities such as drain pits where solids such as sand are mixed, the mixed solids gradually settle and accumulate, making it difficult for the pump to absorb water and eventually obstructing the suction port. A pump with blades is used, injection and agitation with pressure water is performed, agitation is performed using the inflow of water flowing into the water tank, or dewatering of the water tank is periodically performed.
[0003]
[Problems to be solved by the invention]
For example, in a pump equipped with a stirring blade provided with a drive shaft of a submersible pump protruding below the suction port and provided with stirring blades, if the cloth is cut off or vinyl is mixed in, the winding will occur and the operation will be hindered. Vibration is likely to occur due to the impact of solid matter on the body and wear, and the pump life is generally short.
Although the method of injecting and agitating the pressurized water is easy to cope with all, the pressure water source to be used and the operation cost are problems.
In addition, in the method of stirring using the inflow water force, for example, in the applicant's patent No. 1395429 and utility model No. 1760342, it is very effective when there is always a certain amount of inflow water, but when the amount of inflow water is small, sufficient stirring power is used. In addition, the "pump equipment that removes sand by the difference in water level of the divided tanks" filed on September 7, 1994 has the following problems: is there.
[0004]
[Means for Solving the Problems]
In the present invention, in order to solve these problems, a storage water tank is provided in or near the water tank, and an exhaust pipe provided with an exhaust valve for discharging air in the tank is provided above the storage water tank. A downwardly extending intake pipe is provided for inhaling external air into the storage tank when it drops, and a discharge port connected to the injection nozzle is opened at the bottom of the storage tank.
The pump hole part of the water tank where the pump is installed is formed so that the corner between the bottom surface and the surrounding wall surface is formed as an inclined surface or an arc shape so that the water flow smoothly, and the direction of the stirring nozzle is approximately constant To be oriented.
[0005]
In addition, the inflow water into the water tank is made to flow by using a channel gutter, a splash prevention plate, or the like so as to promote agitation circulation.
[0006]
For the purpose of cleaning the bottom of the water tank, a mortar-shaped or a polygonal pump hole having an inverted trapezoidal cross section is provided in the water tank, a conical pedestal is provided near the center of the pump hole, and the pump is placed on the pedestal. Alternatively, nozzles for spraying the storage tank water are arranged around the outer periphery of the bottom of the water tank which is installed above the pedestal and is inclined so as to flow down into the pump hole.
The inflow water into the water tank is introduced such that a waterway gutter or a waterway groove is formed in the bottom of the water tank, and the inflowing water collides with the conical pedestal of the pump hole and the opposing peripheral wall surface, and reversely rises or reversely circulates.
[0007]
[Yen]
When the water tank equipment of the pump configured as described above is started at a high water level and the automatic operation of stopping the low water level is performed, the water tank water level rises due to the inflow of water into the water tank from the low water level at which the pump stopped draining and stopped. As a result, the water level in the storage tank also rises while pushing and exhausting the exhaust valve with the tank water flowing backward from the injection nozzle, and stores the water level close to the maximum water level of the water tank.
In the case of a water tank in which the water tank rises at a very high speed, an inlet provided with an inflow valve can be opened at the bottom of the storage tank to increase the storage speed.
[0008]
If the water tank water level reaches the upper limit water level and the pump starts up and starts pumping, the water level in the water tank falls, and if the water level reaches the intake pipe opening of the storage water tank and the outside air is sucked in, the water in the storage tank becomes the water tank level. Due to the pressure difference between the water level in the reservoir and the water level in the reservoir, the water is ejected from the injection nozzle located in the reservoir and the water in the pump hole, where the amount of stored water is reduced, is strongly agitated and circulated, and the solids that have accumulated on the bottom of the pump hole The material and suspended matter floating on the surface of the water are entrained and mixed, and discharged out of the water tank together with pumping.
[0009]
When the bottom of the water tank is washed, the water level of the water tank falls due to the pumping of the pump, and the water in the storage tank is ejected from the injection nozzles arranged around the bottom, and the washing water flowing down the bottom of the water tank flows into the pump hole. The liquid flows down into the conical pedestal, and rises and is sucked by the pump while mixing.
The water flowing into the water tank will also flow down the open channel with the fall of the tank water level, and the sediment in the channel will flow down to the pump hole while mixing and flowing down. To separate and remove precipitated solids or suspended matter synergistically with the inflow of reservoir water.
[0010]
In addition, in equipment that handles mixed solids at a high concentration, continuous operation at an extremely low water level using only inflow water into the water tank is the best method that can prevent sedimentation and accumulation due to stagnation. Continuous operation at an extremely low water level tends to cause air lock phenomenon (a phenomenon in which an air layer is formed at the suction port of the impeller and the pump cannot be pumped) due to the suction of air. A part of the inflowing water collides and rises, and is injected into the pump suction port, and the air lock phenomenon is destroyed and prevented due to the stirring.
[0011]
Embodiment 1
Hereinafter, the present invention will be described with reference to the accompanying drawings.
FIG. 1 is a longitudinal sectional view, and FIG. 2 is an internal plan view. In the first embodiment, a storage water tank C is provided above a pump hole A in a water tank 1, and an upper side of the storage water tank C is provided. An intake pipe 5 connected and connected by a connection pipe 4 shown in FIG. 3 extends downward and is opened, and is connected and opened to an exhaust pipe 8 via an exhaust valve provided with a ball 6 above.
The
[0012]
The pumped water of the
In addition, three
[0013]
In the second embodiment, a sectional view of which is shown in FIG. 4 and a plan view of which is shown in FIG. 5, a pump hole A is formed in a mortar shape on the inner bottom surface of the
In order to minimize scattering of solid matter mixed into the inflow water from the inflow ports 27 and 27 ', a downflow waterway D is provided on the bottom of the water tank immediately below the inflow ports 27 and 27', and a waterway E which is connected to the waterway E and is introduced into the pump hole A. Is established.
The water channel E may be introduced toward the center of the pump hole A, but it is more effective to make the water flow somewhat eccentric as in this embodiment because it flows around somewhat.
[0014]
Further, a closed storage water tank C having the same function as that of the first embodiment is formed and installed in the
[0015]
【The invention's effect】
As described above, in the present invention, it is possible to store relatively clean water tank water having a water level close to the highest water level that has flowed backward from the injection nozzle into the storage water tank installed in the water tank. When the water level and the pump hole water level or the water level difference between the injection nozzles is 0.5 m, the initial jet velocity is 2.91 m / s, and when the water level difference is 1.0 m, the initial jet velocity is about 4.12 m / s. Without using another power source at all, and at the most effective time when the water volume in the pump hole is reduced, it can be spouted out, and the solids that precipitate and deposit on the bottom of the water tank can be circulated and agitated to eliminate them. By carrying out vertical stirring or horizontal reversal stirring, suspended matters floating on the surface of the water tank can be effectively taken in and discharged from the circulating water, so that there is also an effect of preventing generation of offensive odor in sewerage facilities and the like.
[0016]
In the first embodiment, the concept of Applicant's Utility Model No. 1760342 was adopted to perform the stirring and circulating flow utilizing the inflow water force. Therefore, even when the amount of inflow water into the water tank was large, the amount of inflow water was small. Stable sand removal and mud removal can be performed even during extremely small automatic operation.
Also, in the first embodiment, when the continuous operation at an extremely low water level is performed, a portion near the lower part of the pump suction port is so arranged that a part of the guided inflow water is injected into the pump suction port. By providing a plate-shaped or chevron-shaped projection on the surface, air lock can be eliminated as in the second embodiment.
[0017]
In the second embodiment, since the equipment adopts the idea of the applicant's patent No. 1395429 and utility model No. 1760342, not only each function is exhibited, but also the extremely low water level continuous operation particularly based only on the inflow water. The effect of releasing the air lock phenomenon when performing the operation and achieving stable operation is great.
In addition, even during automatic operation of high water level start and low water level stop, mixed water solids can be prevented from being scattered throughout the water tank due to the water channel groove provided from the lower part of the inlet to the pump hole. As a result, it is possible to effectively eliminate the water by stirring down the inflow water into the water tank.
[Brief description of the drawings]
FIG. 1 is a sectional view of a first embodiment.
FIG. 2 is an internal plan view of the first embodiment.
FIG. 3 is a cross-sectional view of an intake pipe and an exhaust valve portion of a storage water tank.
FIG. 4 is a sectional view of a second embodiment.
FIG. 5 is a plan view of a second embodiment.
FIG. 6 is a cross-sectional view of a reservoir water inlet.
[Explanation of symbols]
1, 21 Water tank 3,
Arrows in the figure indicate flows of gas and liquid.
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP28113694A JP3603167B2 (en) | 1994-10-07 | 1994-10-07 | Water tank equipment to remove or wash sand with stored water |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP28113694A JP3603167B2 (en) | 1994-10-07 | 1994-10-07 | Water tank equipment to remove or wash sand with stored water |
Publications (2)
Publication Number | Publication Date |
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JPH08108171A JPH08108171A (en) | 1996-04-30 |
JP3603167B2 true JP3603167B2 (en) | 2004-12-22 |
Family
ID=17634873
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Application Number | Title | Priority Date | Filing Date |
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JP28113694A Expired - Lifetime JP3603167B2 (en) | 1994-10-07 | 1994-10-07 | Water tank equipment to remove or wash sand with stored water |
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JP (1) | JP3603167B2 (en) |
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KR101135049B1 (en) * | 2008-10-30 | 2012-04-16 | 주식회사 지성이엔지 | Waste sludge pumping device |
NL2016583B1 (en) * | 2015-07-21 | 2017-02-15 | Pharmafilter B V | Sewage well. |
JP7087343B2 (en) * | 2017-10-26 | 2022-06-21 | 住友金属鉱山株式会社 | Abrasion judgment method for agitator and agitator blade |
CN112112255A (en) * | 2019-06-21 | 2020-12-22 | 宝山钢铁股份有限公司 | Draining pump control system |
-
1994
- 1994-10-07 JP JP28113694A patent/JP3603167B2/en not_active Expired - Lifetime
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