JPS631478B2 - - Google Patents
Info
- Publication number
- JPS631478B2 JPS631478B2 JP54016926A JP1692679A JPS631478B2 JP S631478 B2 JPS631478 B2 JP S631478B2 JP 54016926 A JP54016926 A JP 54016926A JP 1692679 A JP1692679 A JP 1692679A JP S631478 B2 JPS631478 B2 JP S631478B2
- Authority
- JP
- Japan
- Prior art keywords
- pump
- water
- circulation
- pipe
- storage tank
- 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
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 53
- 239000010865 sewage Substances 0.000 claims description 12
- 238000005192 partition Methods 0.000 claims description 10
- 239000002351 wastewater Substances 0.000 claims description 3
- 238000005086 pumping Methods 0.000 description 7
- 239000000835 fiber Substances 0.000 description 3
- 239000010802 sludge Substances 0.000 description 3
- 229910001018 Cast iron Inorganic materials 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 238000005266 casting Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000002990 reinforced plastic Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
Landscapes
- Control Of Non-Positive-Displacement Pumps (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Description
【発明の詳細な説明】
本発明は繊維類、固形物その他の汚物を含む汚
水を汚水貯溜槽から汚水処理装置へ供給する場合
等に適した定流量ポンプ装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a constant flow pump device suitable for supplying sewage containing fibers, solids and other filth from a sewage storage tank to a sewage treatment device.
従来は一般に第１図の如く貯溜槽１の横、又は
汚水２内に循環ポンプ３を取り付け、循環ポンプ
３の吐出水４により汚水表面のスカム（浮渣）５
を破砕しながら揚水（泥）ポンプ６により貯溜槽
底部の汚水２を処理装置７へ供給している。とこ
ろがその場合は貯溜槽１内の水位変化によるポン
プ６の吐出水量に大幅な変化が生じ、処理装置７
を効率よく運転することができなくなる。即ち貯
溜槽１の水面と処理装置７の高さの差をH1＝12
ｍ（低水位時）、H2＝９ｍ（高水位時）、水位変
動幅H3＝３ｍとし、揚水（泥）ポンプ６の性能
を第２図の揚程揚水量曲線イのように仮定する
と、貯溜槽内の水位が高い時の運転点はＡ点、水
量は0.45m3／minとなり、貯溜槽内の水位が低い
時の運転点はＢ点、水量は0.35m3／minとなり、
貯溜槽の水位変動幅H3＝３ｍにより0.1m3／min
の水量変化が起こる。第２図のロ，ハは配管の管
内損失である。 Conventionally, a circulation pump 3 is generally installed next to a storage tank 1 or inside the wastewater 2 as shown in FIG.
The sewage 2 at the bottom of the storage tank is supplied to the treatment device 7 by the pump 6 while crushing the sewage 2. However, in that case, a significant change occurs in the amount of water discharged from the pump 6 due to a change in the water level in the storage tank 1, and the treatment device 7
become unable to drive efficiently. In other words, the difference between the water level of the storage tank 1 and the height of the treatment device 7 is H 1 = 12
m (at low water level), H 2 = 9 m (at high water level), water level fluctuation width H 3 = 3 m, and assuming that the performance of the water (mud) pump 6 is as shown in the head lift curve A in Figure 2, When the water level in the storage tank is high, the operating point is point A, and the water volume is 0.45 m 3 /min. When the water level in the storage tank is low, the operating point is point B, and the water volume is 0.35 m 3 /min.
Water level fluctuation width of storage tank H 3 = 3m, 0.1m 3 /min
A change in water volume occurs. B and C in Figure 2 are losses within the piping.
仕切弁等で水量を調整した時は、高水位の時の
運転点はＣ点、水量は0.29m3／minとなり、低水
位の時の運転点はＤ点、水量は0.23m3／minとな
り、0.06m3／minの水量変化が起こる。しかし仕
切弁等で水量を調整した場合には、仕切弁の部分
に汚物による閉塞が発生する。第２図のニ，ホは
仕切弁、ピンチバルブ等で水量を調整した時の管
内損失である。 When adjusting the water volume with a gate valve, etc., the operating point at high water level is point C and the water volume is 0.29 m 3 /min, and the operating point at low water level is point D and the water volume is 0.23 m 3 /min. , a change in water volume of 0.06m 3 /min occurs. However, when the water volume is adjusted using a gate valve or the like, the gate valve becomes clogged with dirt. Figure 2 shows losses in the pipe when the water volume is adjusted using gate valves, pinch valves, etc.
この対策としてポンプ６の吐出口８に接続した
揚水パイプ９をＶ形堰を有するオーバーフロータ
ンク（図示せず）へ接続し、オーバーフロータン
クを処理装置７へ接続することも考えられる。と
ころがその場合はＶ形堰の部分に繊維類等の汚物
がつまり、オーバーフロータンクの水位変化が大
きくなる。又堰を通過した汚水はオーバーフロー
パイプ内を重力の作用で流動する形になるため、
オーバーフローパイプ内にも閉塞が発生しやす
い。オーバーフローパイプが長くなる欠点も避け
られない。 As a countermeasure to this problem, it is also possible to connect the pumping pipe 9 connected to the discharge port 8 of the pump 6 to an overflow tank (not shown) having a V-shaped weir, and connect the overflow tank to the processing device 7. However, in that case, the V-shaped weir becomes clogged with filth such as fibers, resulting in large changes in the water level in the overflow tank. In addition, the wastewater that has passed through the weir flows through the overflow pipe due to gravity, so
Blockages are also likely to occur in the overflow pipe. The disadvantage of having a long overflow pipe is also unavoidable.
本発明は循環ポンプの吐出口を管内損失の小さ
い循環パイプを介して貯溜槽の水面上方へ開口し
た場合、循環パイプが水位一定の貯溜槽となり得
る点に着目して、この循環パイプの部分から循環
ポンプより小流量の揚水（泥）ポンプにより汚水
を処理装置へ常時定流量で供給するようにしたも
ので、第３図に１実施例を示す。循環ポンプ３、
揚水（泥）ポンプ６は共に繊維類、固形物等を多
量に含む汚水を輸送するに適した汚水汚物ポンプ
で、本件出願人が先に提案した汚物ポンプ（実公
昭51−33363）を使用することができる。循環ポ
ンプ３の吸込口１１は開閉弁１２、吸込管１３を
介して貯溜槽１の底部に連通しており、吐出口１
４は循環パイプ用スタンド１５、循環パイプ１６
を介して高水位の場合のスカム５より上方におい
て下向きに開口している。循環パイプ１６は立管
１６ａ、90゜曲管１６ｂ、横管１６ｃでできてお
り、循環パイプ１６の内径は循環ポンプ３による
循環水量の全範囲にわたり管内損失が極めて小さ
くなるように決定する。例えば循環ポンプ３に水
量が0.6〜1.2m3／minの時は、立管１６ａの内径
を200mm、横管１６ｃの内径を150〜200mm程度に
すればよい。横管１６ｃは貯溜槽１の壁を水平に
貫き、先端に下向き湾曲部１６ｄを有する。循環
パイプ１６は鋳鉄、ステンレス、硬質樹脂等で製
造することができる。 The present invention focuses on the fact that when the discharge port of a circulation pump is opened above the water surface of a storage tank through a circulation pipe with small internal loss, the circulation pipe can become a storage tank with a constant water level, This system is designed to constantly supply sewage to the treatment equipment at a constant flow rate using a pumping (mud) pump with a smaller flow rate than the circulation pump, and one embodiment is shown in Fig. 3. circulation pump 3,
Both pumps (sludge) pumps 6 are sewage pumps suitable for transporting sewage containing a large amount of fibers, solids, etc., and use the sewage pump previously proposed by the applicant (publication of Utility Model Publication No. 51-33363). be able to. A suction port 11 of the circulation pump 3 communicates with the bottom of the storage tank 1 via an on-off valve 12 and a suction pipe 13, and a discharge port 1
4 stands for circulation pipe 15, circulation pipe 16
It opens downward through the scum 5 above the scum 5 when the water level is high. The circulation pipe 16 is made up of a vertical pipe 16a, a 90° bent pipe 16b, and a horizontal pipe 16c, and the inner diameter of the circulation pipe 16 is determined so that loss within the pipe is extremely small over the entire range of the amount of water circulated by the circulation pump 3. For example, when the amount of water in the circulation pump 3 is 0.6 to 1.2 m 3 /min, the inner diameter of the vertical pipe 16a should be 200 mm and the inner diameter of the horizontal pipe 16c should be about 150 to 200 mm. The horizontal pipe 16c horizontally penetrates the wall of the storage tank 1 and has a downwardly curved portion 16d at the tip. The circulation pipe 16 can be made of cast iron, stainless steel, hard resin, or the like.
循環パイプ用スタンド１５は鋳鉄、ステンレス
等の鋳物、強化プラスチツク等でできており、吐
出口１４に接続する水平な入口１７と、吐出口１
４に対向しかつ入口１７に連通する通路を滑らか
に上方へ湾曲させる仕切板１８と、仕切板１８の
上側の広い出口１９と、仕切板１８の下側背後の
狭い水平な出口２０を備え、出口１９はフランジ
２１の部分で立管１６ａと接続し、出口２０は循
環ポンプ３より小流量の揚水（泥）ポンプ６の吸
込口２２に接続している。仕切板１８は循環ポン
プ３の吐出水が揚水（泥）ポンプ６の吸込口２２
に直接圧力的な影響を与えるのを防止する役割を
果す。ポンプ６の吐出口８は開閉弁２３、揚水パ
イプ９を介して高い位置の処理装置（図示せず）
へ連通する。 The circulation pipe stand 15 is made of cast iron, stainless steel or other castings, reinforced plastic, etc., and has a horizontal inlet 17 connected to the outlet 14 and a outlet 1.
4, a partition plate 18 that smoothly curves upward a passage communicating with the inlet 17, a wide outlet 19 on the upper side of the partition plate 18, and a narrow horizontal outlet 20 behind the lower side of the partition plate 18, The outlet 19 is connected to the standpipe 16a at the flange 21, and the outlet 20 is connected to the suction port 22 of the water (mud) pump 6, which has a smaller flow rate than the circulation pump 3. The partition plate 18 connects the discharge water of the circulation pump 3 to the suction port 22 of the pumping (mud) pump 6.
It plays a role in preventing direct pressure from exerting influence on people. The discharge port 8 of the pump 6 is connected to a high-position processing device (not shown) via an on-off valve 23 and a pumping pipe 9.
Connect to.
循環ポンプ３の性能が第４図の揚程、揚水量曲
線ヘと仮定し、循環パイプ１６の管内損失を０と
すると、貯溜槽内の水位が高い時のポンプの運転
点はＥ点となり、揚程0.5ｍ、揚水量1.05m3／min
で運転される。貯溜槽内の水位が低い時のポンプ
の運転点はＦ点となり、揚程3.5ｍ、揚水量0.8
m3／minで運転される。今循環パイプ１６の仕様
を一部前述の如く立管１６ａの内径が200mm、長
さが７ｍ、横管１６ｃの内径が150mm、長さが５
ｍ、90゜曲管１６ｂが１個とすると、揚水量が0.8
m3／minと1.05m3／minの時の管内損失は、0.8
m3／minの時約0.04ｍ、1.05m3／minの時約0.065
ｍとなり、循環パイプ１６内では管内損失による
圧力の上昇は殆んど無視できる程度となる。 Assuming that the performance of the circulation pump 3 is as per the head and water lift curves shown in Figure 4, and assuming that the loss in the circulation pipe 16 is 0, the operating point of the pump when the water level in the storage tank is high is point E, and the head is 0.5m, pumping amount 1.05m 3 /min
It is driven by The operating point of the pump when the water level in the storage tank is low is point F, with a head of 3.5 m and a pumping amount of 0.8
It is operated at m 3 /min. Now, some of the specifications of the circulation pipe 16 are as described above, the inner diameter of the vertical pipe 16a is 200 mm and the length is 7 m, the inner diameter of the horizontal pipe 16c is 150 mm, and the length is 5 m.
m, assuming that there is one 90° bent pipe 16b, the pumped water amount is 0.8
The pipe loss at m 3 /min and 1.05 m 3 /min is 0.8
Approx. 0.04m at m 3 /min, approx. 0.065 at 1.05m 3 /min
m, and the increase in pressure within the circulation pipe 16 due to internal loss is almost negligible.
以上説明したように、本発明によると循環パイ
プ１６が水位一定の貯溜槽の役割を果し、揚水
（泥）ポンプ６の吸込口２２における押込圧力は
常時一定となるので、揚水（泥）ポンプ６の吐出
量に変化は起こらない。第３図中H4は循環パイ
プ１６内の一定水位と処理装置の高さの差であ
る。又第２図のＧは第３図における揚水（泥）ポ
ンプ６の運転点、トは揚水パイプ９の管内損失で
ある。又処理装置の容量が小さい時には、第２図
のチの性能を持つ揚水（泥）ポンプを使用するこ
とが出来る。この場合のポンプの最高揚程（揚水
量Ｏ）はH1より低くてもよい。当装置を使用し
ない時は揚水（泥）ポンプの最高揚程はH1を超
えなければならない。Ｈ点はチの性能を持つ揚水
（泥）ポンプを使用した時の運転点である。 As explained above, according to the present invention, the circulation pipe 16 plays the role of a reservoir with a constant water level, and the pushing pressure at the suction port 22 of the water (mud) pump 6 is always constant. No change occurs in the discharge amount of No. 6. In FIG. 3, H 4 is the difference between the constant water level in the circulation pipe 16 and the height of the treatment device. Further, G in FIG. 2 is the operating point of the water (sludge) pump 6 in FIG. 3, and G is the internal loss of the water pump 9. Also, when the capacity of the treatment equipment is small, a water (sludge) pump having the performance shown in Figure 2 (h) can be used. In this case, the maximum head of the pump (pumping amount O) may be lower than H1 . When the device is not in use, the maximum head of the water (mud) pump must exceed H 1 . Point H is the operating point when using a water (mud) pump with the performance of H.
循環ポンプ３で加圧された汚水は入口１７の部
分からスタンド１５内へ流入し、仕切板１８に案
内されて上方へ向きを変え、循環パイプ１６内を
充満して上昇し、横管１６ｃの下向き湾曲部１６
ｄからスカム５上へ落下し、スカム５を積極的に
破砕する。 Sewage pressurized by the circulation pump 3 flows into the stand 15 from the inlet 17, is guided by the partition plate 18, changes direction upward, fills the circulation pipe 16, rises, and flows into the horizontal pipe 16c. Downward curved portion 16
d onto the scum 5, and actively crushes the scum 5.
要するに本発明においては、循環ポンプ３の吐
出口１４を管内損失の小さい太い上方に延びる循
環パイプ１６を介して貯溜槽１の水面上方へ開口
すると共に循環パイプ１６の底部において循環ポ
ンプ３の横向きの吐出口１４に面して上方へ滑か
に湾曲した仕切板１８を設け、仕切板１８の背後
の循環パイプ底部に循環ポンプ３より小流量の揚
水ポンプ６の吸込口２２をつないでいるので、仕
切板１８は循環ポンプ３の吐出水が揚水ポンプ６
の吸込口２２に直接圧力的な影響を与えることを
防止する役割を果し、揚水ポンプ６の吸込口２２
における押込圧力は常時一定となるので、揚水ポ
ンプ６の吐出量に変化は起こらなくなる。即ち循
環パイプ１６が水位一定の貯溜槽となり、別の貯
溜槽を設けることなく揚水ポンプ６の吐出量を略
一定に保ち得る利点がある。 In short, in the present invention, the discharge port 14 of the circulation pump 3 is opened above the water surface of the storage tank 1 via the thick upwardly extending circulation pipe 16 with small internal loss, and the circulation pump 3 is opened horizontally at the bottom of the circulation pipe 16. A partition plate 18 facing the discharge port 14 and smoothly curved upward is provided, and the suction port 22 of the water pump 6, which has a smaller flow rate than the circulation pump 3, is connected to the bottom of the circulation pipe behind the partition plate 18. The partition plate 18 connects the water discharged from the circulation pump 3 to the water pump 6.
The suction port 22 of the pump 6 is prevented from having a direct pressure influence on the suction port 22.
Since the pushing pressure at is always constant, the discharge amount of the water pump 6 does not change. That is, the circulation pipe 16 serves as a reservoir with a constant water level, and there is an advantage that the discharge amount of the water pump 6 can be kept substantially constant without providing a separate reservoir.
本発明を具体化する時、循環パイプ１６の出口
には抵抗の少ないスカム破砕装置を取り付けるこ
ともできる。スカム破砕装置としては本件出願人
が先に提案したスプリンクラー式の装置（特願昭
52−1838、特開昭53−85955）が適している。循
環パイプ１６の出口を１６d′の如く上向きに開放
すると、循環パイプ１６内に常時泥水を充満する
ことができ、揚水（泥）ポンプ６の吸込口２２の
押込圧力を可及的に均一化することができると共
に、吐出水４′が広い範囲にわたり分散落下する
ため広範囲のスカムを破砕することができる。立
管１６ａは立型のタンクであつてもさしつかえな
い。 When implementing the present invention, a scum crushing device with low resistance can also be installed at the outlet of the circulation pipe 16. As a scum crushing device, the sprinkler-type device previously proposed by the applicant (patent application
52-1838, JP-A-53-85955) is suitable. When the outlet of the circulation pipe 16 is opened upward as shown at 16d', the circulation pipe 16 can be constantly filled with muddy water, and the pushing pressure of the suction port 22 of the water (mud) pump 6 can be made as uniform as possible. In addition, since the discharged water 4' falls and disperses over a wide range, it is possible to crush scum over a wide range. The standpipe 16a may be a vertical tank.
第１図は従来の装置を示す垂直断面略図、第２
図は第１図、第３図中の揚水（泥）ポンプの性能
曲線を示すグラフ、第３図は本発明による装置の
垂直断面部分図、第４図は第３図中の循環ポンプ
の性能を示すグラフである。１……汚水貯溜槽、
３……循環ポンプ、６……揚水（泥）ポンプ、１
１……吸込口、１４……吐出口、１６……循環パ
イプ、２２……吸込口。
Figure 1 is a schematic vertical cross-sectional view of a conventional device;
The figures are graphs showing the performance curves of the water (mud) pumps in Figures 1 and 3, Figure 3 is a vertical cross-sectional partial view of the device according to the invention, and Figure 4 is the performance of the circulation pump in Figure 3. This is a graph showing. 1... Sewage storage tank,
3... Circulation pump, 6... Lifting (mud) pump, 1
1...Suction port, 14...Discharge port, 16...Circulation pipe, 22...Suction port.
Claims (1)
底部につなぎ、循環ポンプ３の吐出口１４を管内
損失の小さい太い上方に延びる循環パイプ１６を
介して貯溜槽１の水面上方へ開口すると共に循環
パイプ１６の底部において循環ポンプ３の横向き
の吐出口１４に面して上方へ滑らかに湾曲した仕
切板１８を設け、仕切板１８の背後の循環パイプ
底部に循環ポンプ３より小流量の揚水ポンプ６の
吸込口２２をつなぎ、揚水ポンプ６の吐出口８を
汚水処理装置へ接続したことを特徴とする定流量
ポンプ装置。1. The suction port 11 of the circulation pump 3 is connected to the bottom of the wastewater storage tank 1, and the discharge port 14 of the circulation pump 3 is opened above the water surface of the storage tank 1 via a thick upwardly extending circulation pipe 16 with low internal loss. A partition plate 18 is provided at the bottom of the circulation pipe 16 facing the horizontal discharge port 14 of the circulation pump 3 and curved upward smoothly, and a pump with a smaller flow rate than the circulation pump 3 is installed at the bottom of the circulation pipe behind the partition plate 18. 6 and the discharge port 8 of the pump 6 is connected to a sewage treatment device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1692679A JPS55109795A (en) | 1979-02-15 | 1979-02-15 | Fixed amount flow pumping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1692679A JPS55109795A (en) | 1979-02-15 | 1979-02-15 | Fixed amount flow pumping device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55109795A JPS55109795A (en) | 1980-08-23 |
| JPS631478B2 true JPS631478B2 (en) | 1988-01-12 |
Family
ID=11929724
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1692679A Granted JPS55109795A (en) | 1979-02-15 | 1979-02-15 | Fixed amount flow pumping device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55109795A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5123042A (en) * | 1974-08-21 | 1976-02-24 | Hitachi Ltd | JOHOTENSOHOSHIKI |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5922314Y2 (en) * | 1976-07-28 | 1984-07-03 | 株式会社同和 | Refueling device |
-
1979
- 1979-02-15 JP JP1692679A patent/JPS55109795A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5123042A (en) * | 1974-08-21 | 1976-02-24 | Hitachi Ltd | JOHOTENSOHOSHIKI |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS55109795A (en) | 1980-08-23 |
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