JPH03296404A - Method for washing filter tank - Google Patents

Method for washing filter tank

Info

Publication number
JPH03296404A
JPH03296404A JP9816690A JP9816690A JPH03296404A JP H03296404 A JPH03296404 A JP H03296404A JP 9816690 A JP9816690 A JP 9816690A JP 9816690 A JP9816690 A JP 9816690A JP H03296404 A JPH03296404 A JP H03296404A
Authority
JP
Japan
Prior art keywords
washing
water
cleaning
filter
filter medium
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
JP9816690A
Other languages
Japanese (ja)
Other versions
JPH07121328B2 (en
Inventor
Masaichi Shimizu
政一 清水
Makoto Sakurai
誠 桜井
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.)
Noritz Corp
Original Assignee
Noritz 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 Noritz Corp filed Critical Noritz Corp
Priority to JP2098166A priority Critical patent/JPH07121328B2/en
Publication of JPH03296404A publication Critical patent/JPH03296404A/en
Publication of JPH07121328B2 publication Critical patent/JPH07121328B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

PURPOSE:To get high washing effect using a small amount of washing water by repeating by turns washing water supply to the filter tank where filter media are set and interruption of the water supply. CONSTITUTION:Into a filter tank 8 where filter media are set washing water is fed and stopped repeatedly by turns. Duration for feeding the washing water is taken as time length required for filtration efficiency to reach its peak value, while duration for interruption of the water supply is taken as the time length required for sedimentation of dirts and filter media stirred up in the filter tank. In this way the whole washing process consists of individual washing cycles being performed each in relatively short time. Each cycle is performed till the moment when max. washing efficiency is achieved. Therefore, an effective washing of the filter media can be realized at every cycle. It is hence possible to carry out effective washing, consuming a much smaller amount of the water as compared with conventional methods for continuous washing.

Description

【発明の詳細な説明】 〈産業上の利用分野〉 本発明は、例えば浴槽水を清浄化する濾過装置に備える
濾過槽を洗浄する方法に関する。但し、濾過対象は浴槽
水に限定されない。
DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a method for cleaning a filtration tank included in a filtration device for purifying bathtub water, for example. However, the object to be filtered is not limited to bath water.

〈従来の技術〉 従来、浴槽などに装備される濾過装置では、循環ポンプ
によって浴槽から浴槽水を吸い出し、この浴槽水を濾過
槽の上から下へと通過させることにより、浴槽水に含ま
れている垢、ゴミ、不純物などの汚れを除去し清浄化し
てから、この清浄水を浴槽に還流するようになっている
<Conventional technology> Conventionally, in a filtration device installed in a bathtub, etc., a circulation pump sucks out bathwater from the bathtub and passes the bathwater from the top to the bottom of the filtration tank, thereby removing the water contained in the bathtub water. After cleaning and removing dirt such as dirt, dust, and impurities, this clean water is returned to the bathtub.

このような浴槽水の濾過洗浄を繰り返していくうちに濾
材には汚れが蓄積され、濾過能力が次第に低下してくる
ので、濾過槽を洗浄することを行う、この濾過槽の洗浄
は、濾過槽の下から上へと洗浄水(浴槽水または水道水
)を通過させることによって行うが、従来では、濾過槽
に対して一定時間連続して洗浄水を通過させ続けるよう
にしている。
As you repeat this type of filtration and cleaning of bathtub water, dirt accumulates on the filter medium and the filtration capacity gradually decreases. This is done by passing wash water (bath water or tap water) from the bottom to the top of the tank. Conventionally, the wash water is continuously passed through the filter tank for a certain period of time.

〈発明が解決しようとする課題〉 ところで、従来の洗浄方法では、膨大な量の水が必要と
なり、不経済である点が指摘される。しかも、洗浄開始
からある一定の時間を経過すると、濾材や濾材中の汚れ
が除去されにくくなるなど洗浄効果に限度がある。
<Problems to be Solved by the Invention> By the way, it has been pointed out that the conventional cleaning method requires a huge amount of water and is uneconomical. Moreover, after a certain period of time has elapsed from the start of cleaning, there is a limit to the cleaning effect, as it becomes difficult to remove the filter medium and the dirt in the filter medium.

なお、洗浄水の流量(単位時間当たりの量)を増せば、
洗浄効果を少しでも高めることが可能であるが、使用水
量がより一層増加してランニングコストの増大を招く他
、濾材が外部に流出しやすくなってしまう。
In addition, if you increase the flow rate of cleaning water (amount per unit time),
Although it is possible to improve the cleaning effect even a little, the amount of water used increases further, leading to an increase in running costs, and the filter medium becomes more likely to leak outside.

本発明は、このような事情に鑑みて創案されたものであ
って、少ない水量でもって高い洗浄効果を発揮できるよ
うにすることを目的とする。
The present invention was devised in view of these circumstances, and an object of the present invention is to provide a high cleaning effect with a small amount of water.

く課題を解決するための手段〉 本発明は、このような目的を達成するために、次のよう
な構成をとる。
Means for Solving the Problems> In order to achieve the above objects, the present invention has the following configuration.

本発明の濾過槽の洗浄方法は、濾材が収納されている濾
過槽を洗浄する方法であって、濾過槽に対する洗浄水の
導入と、洗浄水の導入停止とを交互に繰り返すことに特
徴を有する。
The method for cleaning a filtration tank of the present invention is a method for cleaning a filtration tank in which a filter medium is stored, and is characterized by alternately repeating introduction of washing water into the filtration tank and stopping the introduction of washing water. .

前記の洗浄水の導入時間は、洗浄効率がピークに達する
のに要する時間とし、洗浄水の導入停止時間は、濾過槽
内で舞い上がる汚れや濾材が沈降するのに要する時間と
するのが好ましい、また、洗浄水の導入を停止したとき
、濾過槽内の水を所定量排水するようにしてもよい。
It is preferable that the introduction time of the washing water is the time required for the washing efficiency to reach its peak, and the introduction stop time of the washing water is the time required for the dirt and filter material flying up in the filtration tank to settle. Further, when the introduction of washing water is stopped, a predetermined amount of water in the filtration tank may be drained.

く作用〉 洗浄開始から洗浄効率がピークに達するまでの時間は比
較的短いことに着目して、短い洗浄運転を複数回に分け
て行うこととした。
Effect> Focusing on the fact that the time from the start of cleaning until the cleaning efficiency reaches its peak is relatively short, we decided to perform the short cleaning operation in multiple steps.

つまり、短時間での洗浄であっても各回の洗浄運転時に
おける洗浄初期の効率的な異物除去が行える。しかも、
短時間での洗浄ゆえ、使用水量が従来よりも少な(て済
む。
In other words, even if the cleaning is performed for a short time, foreign matter can be efficiently removed at the initial stage of each cleaning operation. Moreover,
Because it cleans in a short time, less water is used than before.

また、洗浄を停止させたとき、濾過槽内の水を所定量に
ついて排水すれば、洗浄初期の洗浄水の通過抵抗が減少
し、濾材の洗浄がより一層効率よく行えるようになる。
Further, if a predetermined amount of water in the filter tank is drained when cleaning is stopped, the resistance to passage of the cleaning water at the initial stage of cleaning is reduced, and the filter medium can be cleaned more efficiently.

ここで、実施例を説明する前に、実施例を構成する上で
基礎となった洗浄による濾材復元性能の確認試験につい
て説明する。
Here, before describing the examples, a confirmation test of the filter medium restoration performance by washing, which was the basis for constructing the examples, will be described.

第2図に試験装置の概略構成を示す、図において、32
は浴槽、34はヘアキャッチャ、36は循環ポンプ、3
Bは透明濾過槽、38aは透明濾過槽38における上部
出入口、38bは下部出入口、40は濾材、50はジス
ターン、52はポンプ、54は吸込み口、56は清浄水
運流口、58は排水口、60.62,64.66はバル
ブ、68は排水容器である。
Figure 2 shows the schematic configuration of the test equipment.
is a bathtub, 34 is a hair catcher, 36 is a circulation pump, 3
B is a transparent filtration tank, 38a is an upper inlet/outlet of the transparent filtration tank 38, 38b is a lower inlet/outlet, 40 is a filter medium, 50 is a gas turbine, 52 is a pump, 54 is a suction port, 56 is a clean water flow port, 58 is a drain port, 60.62, 64.66 are valves, and 68 is a drainage container.

透明濾過槽38としては、高さ750mm、直径が19
8mmの円筒形状のものを用い、有孔仕切り板上に濾材
として砂利を100mm、セラミンクビーズを375m
mの高さまで積載収納している。
The transparent filter tank 38 has a height of 750 mm and a diameter of 19 mm.
Using an 8mm cylindrical piece, 100mm of gravel and 375mm of ceramic beads were placed on the perforated partition plate as filter media.
It is loaded and stored up to a height of m.

上記構造の濾過装置において、濾過槽38に対する濾過
時の流量は301/分、洗浄時の流量は321/分とい
うように、配管抵抗により差が生ずる。
In the filtration device having the above structure, the flow rate to the filtration tank 38 during filtration is 301/min, and the flow rate during cleaning is 321/min, which varies depending on the piping resistance.

〔濾過工程〕[Filtration process]

異物(鉄さびの籾)を浴槽32内に混入し、バルブ60
.66のみを開弁し、循環ポンプ36を駆動すると、浴
槽32内の浴槽水が吸込み口54からヘアキャッチャ3
4を介して循環ポンプ36に吸引し、バルブ60.を介
して濾過槽38内に上部出入口38aから流入させる。
Foreign matter (iron rusted rice) is mixed into the bathtub 32, and the valve 60
.. When only the valve 66 is opened and the circulation pump 36 is driven, the bath water in the bathtub 32 flows from the suction port 54 to the hair catcher 3.
4 to circulation pump 36 and valve 60. The water flows into the filtration tank 38 from the upper entrance/exit 38a.

それにより濾材40でもって浴槽水に含まれている異物
が除去されて清浄化される。この清浄水は、下部出入口
3日すよりバルブ66を介して清浄水運流口56から浴
槽32に還流される。
Thereby, foreign substances contained in the bathtub water are removed by the filter medium 40 and the bathtub water is cleaned. This clean water is returned to the bathtub 32 from the clean water flow port 56 via the valve 66 at the lower entrance/exit.

この濾過は、目視観察にて浴槽32内の水がほぼ透明と
なるまで行った。
This filtration was continued until the water in the bathtub 32 became almost transparent as determined by visual observation.

〔洗浄工程〕[Washing process]

バルブ60.66を閉し、バルブ62.64を開放して
、ポンプ52を駆動する。それにより、ジスターン50
からの洗浄水は、ポンプ52、バルブ64を通じて濾過
槽38の下部出入口38bより導入され、濾材40に付
着していた不純物が濾過槽38の上部出入口38aから
流出して、バルブ62.排水口58を通じて排水容器6
8に貯溜される。
Pump 52 is activated by closing valves 60.66 and opening valves 62.64. As a result, 50
Washing water is introduced from the lower inlet/outlet 38b of the filtration tank 38 through the pump 52 and the valve 64, and the impurities adhering to the filter medium 40 flow out from the upper inlet/outlet 38a of the filtration tank 38, and are then passed through the valve 62. Drain container 6 through drain port 58
It is stored in 8.

この洗浄を3回に分けて行い、透明濾過槽38内の目視
観察による濁度推定と、排水容器68内の排水の濁度計
による濁度測定との結果を、第3図および下表に示す、
なお、濁度計による測定は30秒おきに行った。
This cleaning was performed three times, and the results of turbidity estimation by visual observation inside the transparent filtration tank 38 and turbidity measurement using a turbidity meter of the waste water inside the drainage container 68 are shown in Figure 3 and the table below. show,
Note that measurements using a turbidimeter were performed every 30 seconds.

■ 第1回洗浄試験 5分30秒にわたって連続的に洗浄を行った。■ First cleaning test Washing was performed continuously for 5 minutes and 30 seconds.

このとき、透明濾過槽38の目視観察では、洗浄の開始
から6〜7秒後に濾材40より異物が急激に舞い上がっ
て流出されたが、45〜50秒後にはほぼ透明になった
ことを確認した。一方、排水容器68の貯溜水を濁度計
で測定すると、洗浄の開始から5分後に濁度0.1以下
となった。
At this time, visual observation of the transparent filtration tank 38 revealed that 6 to 7 seconds after the start of cleaning, foreign matter suddenly rose up from the filter medium 40 and was flowed out, but it was confirmed that it became almost transparent after 45 to 50 seconds. . On the other hand, when the water stored in the drainage container 68 was measured with a turbidity meter, the turbidity was 0.1 or less 5 minutes after the start of cleaning.

■ 第2回洗浄試験 第1回洗浄試験の終了後、濾過槽38内で舞い上がって
いた異物および濾材40が沈降静止するのを待ってから
、5分間にわたって連続的に洗浄を行った。このとき、
目視観察では、1回目はどではないが、かなりの濁りが
確認されたが、30〜35秒後にはほぼ透明の状態にな
ったことを確認した。洗浄開始から30秒後の濁度計に
よる測定では濁度0.25となっていた。なお、第3図
中において3分以降で測定を中止したのは試験に用いた
濁度計が0.1以下の測定が正確に行えないためである
(2) Second Washing Test After the first washing test was completed, the filter medium 40 and the foreign matter floating up in the filter tank 38 were waited for to settle down, and then washing was continued for 5 minutes. At this time,
Visual observation revealed that it was quite cloudy, although it was not the first time, but it was confirmed that it became almost transparent after 30 to 35 seconds. The turbidity was 0.25 when measured using a turbidity meter 30 seconds after the start of washing. In addition, the reason why the measurement was stopped after 3 minutes in FIG. 3 is because the turbidity meter used in the test cannot accurately measure 0.1 or less.

■ 第3回洗浄試験 2回目と同様にして5分間にわたつて連続的に洗浄を行
った。このとき、目視観察では洗浄当初からほぼ透明で
あった。濁度計による測定濁度は洗浄開始から30秒後
に0.2となった。
(3) Third cleaning test Continuous cleaning was performed for 5 minutes in the same manner as the second cleaning test. At this time, visual observation showed that it was almost transparent from the beginning of cleaning. The turbidity measured by a turbidity meter was 0.2 30 seconds after the start of cleaning.

表 以上のことから、洗浄による濁りの程度が甚だしいのは
、洗浄開始後45秒以内であることが判った。つまり、
5分以上にわたって連続した洗浄を行うよりも、45秒
以内の逆洗を断続して3回繰り返す方が洗浄効果がある
と推測できる。すなわち、第3図および上の表から判る
ように、1回目の洗浄は目視にてほぼ透明となるまでの
45秒だけ行い、2回目の洗浄は濁度計で0.25とな
る30秒も行えば充分であり、3回目の洗浄は20秒も
行えば充分であり、そして、この3回の分割洗浄によっ
て濾過槽38内をほとんど透明の状態まで清浄化できる
ことが判った。
From the above table, it was found that the degree of turbidity due to washing becomes severe within 45 seconds after the start of washing. In other words,
It can be assumed that it is more effective to perform backwashing for 45 seconds or less three times intermittently than to perform continuous washing for 5 minutes or more. That is, as can be seen from Figure 3 and the table above, the first washing was carried out for 45 seconds until the turbidity became almost transparent by visual inspection, and the second washing was carried out for 30 seconds until the turbidity reached 0.25 on the turbidity meter. It has been found that it is sufficient to carry out the third washing for 20 seconds, and that the inside of the filter tank 38 can be cleaned to an almost transparent state by performing the third washing for 20 seconds.

〈実施例〉 以下、本発明の実施例を図面に基づいて詳細に説明する
<Example> Hereinafter, an example of the present invention will be described in detail based on the drawings.

玉上叉隻■ 第1図は濾過装置を示す構成図である0図において、2
は浴槽、4はヘアキャッチ中、6は循環ポンプ、8は濾
過槽、10は濾材、12は自動エア抜き弁、■1〜V5
は第1ないし第5の電動バルブであり、浴槽2を除いた
部分で濾過装置が構成されている。ヘアキャッチ中4は
、浴槽2がら硬いだす浴槽水に含まれている毛や大きな
ゴミを除去するものである。
Figure 1 is a block diagram showing the filtration device.
is a bathtub, 4 is a hair catcher, 6 is a circulation pump, 8 is a filtration tank, 10 is a filter medium, 12 is an automatic air release valve, ■1 to V5
are the first to fifth electric valves, and the portions excluding the bathtub 2 constitute a filtration device. The hair catcher 4 removes hair and large debris contained in hard bathtub water from the bathtub 2.

浴槽2に設けられた吸込み口14にヘアキャッチ±4を
介して循環ポンプ6の吸入側が配管接続されている。循
環ポンプ6の吐出側の配管系は、三方切換部aで2つに
分岐され、一方は第1の電動バルブv1を介して濾過槽
8の上部出入口8aに配管接続され、他方は第2の電動
バルブ■2を介して濾過槽8の下部出入口8bに配管接
続されている。第1の電動バルブ■1と上部出入口8a
との間の配管系に三方切換部すが設けられ、第2の電動
バルブv2と下部出入口8bとの間の配管系に三方切換
部Cが設けられ、三方切換部すと三方切換部Cとが第3
の電動バルブv3および第4の電動バルブv4を介して
配管接続されている。
A suction side of a circulation pump 6 is connected to a suction port 14 provided in the bathtub 2 via a hair catch ±4. The piping system on the discharge side of the circulation pump 6 is branched into two at a three-way switching part a, one is connected to the upper inlet/outlet 8a of the filtration tank 8 via the first electric valve v1, and the other is connected to the upper inlet/outlet 8a of the filtration tank 8. It is pipe-connected to the lower inlet/outlet 8b of the filtration tank 8 via an electric valve (2). First electric valve ■1 and upper entrance/exit 8a
A three-way switching section C is provided in the piping system between the second electric valve v2 and the lower inlet/outlet 8b, and the three-way switching section C and is the third
The electric valve v3 and the fourth electric valve v4 are connected via piping.

第4の電動バルブ■4と三方切換部Cとの間の配管系に
三方切換部dが設けられ、この三方切換部dと浴槽2へ
の清浄水運流口16とが第5の電動パルプv5を介して
配管接続されている。第3の電動パルプv3と第4の電
動バルブv4との間の配管系に三方切換部eが設けられ
、この三方切換部eに排水管18が配管接続されている
A three-way switching section d is provided in the piping system between the fourth electric valve ■4 and the three-way switching section C, and this three-way switching section d and the clean water flow port 16 to the bathtub 2 are connected to the fifth electric pulp v5. Piping is connected via. A three-way switching section e is provided in the piping system between the third electric pulp v3 and the fourth electric valve v4, and a drain pipe 18 is connected to the three-way switching section e.

濾過N8の下部には有孔仕切り板20が設けられ、その
上部に多数の濾材10が積載収納されており、濾材lO
の上面より上方に上部出入口8aが開口し、有孔仕切り
板20の下方に下部出入口8bが開口している。
A perforated partition plate 20 is provided at the bottom of the filtration N8, and a large number of filter media 10 are loaded and stored in the upper part of the partition plate 20.
An upper entrance/exit 8a opens above the top surface, and a lower entrance/exit 8b opens below the perforated partition plate 20.

22はシーケンスコントローラであり、循環ポンプ6お
よび第1ないし第5の電動バルブVl〜v5を所定の順
序に従って制御するようになっている。24は浴槽内の
壁面に取り付けられたリモコン操作部であり、シーケン
スコントローラ22に対して各モードの指令を与えるよ
うになっている。
22 is a sequence controller, which controls the circulation pump 6 and the first to fifth electric valves Vl to v5 in a predetermined order. Reference numeral 24 denotes a remote control operation unit attached to the wall inside the bathtub, and is configured to give commands for each mode to the sequence controller 22.

なお、第1実施例では、第4の電動バルブv4と自動エ
ア抜き弁!2とは動作させないので、これらは省略して
もよい。
In addition, in the first embodiment, the fourth electric valve v4 and the automatic air bleed valve! 2 is not operated, so these may be omitted.

次に、上記構成の濾過装置の動作を説明する。Next, the operation of the filtration device having the above configuration will be explained.

〔濾過モード〕[Filtration mode]

シーケンスコントローラ22は、リモコン操作部24よ
り濾過モードの指令を受けると、第1の電動バルブv1
および第5の電動バルブv5を開弁する。他の電動バル
ブV2.V3.V4は閉じたままとする0次に、シーケ
ンスコントローラ22は、循環ポンプ6を駆動する。こ
れによって、細い実線矢印で示すように、浴槽2内の浴
槽水が吸込み口14から吸い出され、ヘアキャッチ中4
、循環ポンプ6、三方切換部a、第1の電動バルブv1
並びに三方切換部すを介して濾過槽8の上部出入口8a
から流入する。
When the sequence controller 22 receives a filtration mode command from the remote control operation unit 24, the sequence controller 22 operates the first electric valve v1.
and opens the fifth electric valve v5. Other electric valve V2. V3. V4 remains closed. Next, the sequence controller 22 drives the circulation pump 6. As a result, as shown by the thin solid line arrow, the bath water in the bathtub 2 is sucked out from the suction port 14, and the hair catching process 4
, circulation pump 6, three-way switching section a, first electric valve v1
and the upper inlet/outlet 8a of the filtration tank 8 via the three-way switching part.
It flows in from.

浴槽水は濾過槽8を上から下に通過するが、濾材10中
を通過する間に浴槽水に含まれている汚れ(垢、ゴミ、
不純物など)が除去されて清浄化される。その清浄水は
、下部出入口8b、三方切換部c、d並びに第5の電動
バルブv5を介して清澄水還流口16から浴槽2に還流
される。
The bathtub water passes through the filter tank 8 from top to bottom, and while passing through the filter medium 10, dirt (dirt, dirt, etc.) contained in the bathtub water is removed.
impurities, etc.) are removed and purified. The clean water is returned to the bathtub 2 from the clear water return port 16 via the lower entrance/exit 8b, the three-way switching parts c and d, and the fifth electric valve v5.

リモコン操作部24から濾過モードの指令を解除するか
、シーケンスコントローラ22が所定の洗浄時間をカウ
ントアンプすると、循環ポンプ6が停止される。
When the filtration mode command is released from the remote controller 24 or when the sequence controller 22 counts up a predetermined cleaning time, the circulation pump 6 is stopped.

このような濾過モードを繰り返すうちに、濾過槽8には
汚れが蓄積されてい(。
As such filtration mode is repeated, dirt accumulates in the filtration tank 8 (.

〔洗浄モード〕[Washing mode]

■ シーケンスコントローラ22は、リモコン操作部2
4より洗浄モードの指令を受けると、第1の電動バルブ
■1および第5の電動バルブ■5を閉弁し、第2の電動
バルブv2および第3の電動バルブv3を開弁する。第
4の電動バルブv4は閉じた状態を保つ0次いで、シー
ケンスコントローラ22は、循環ポンプ6を駆動し、第
1回目の洗浄を所定時間だけ行う、これによって、太い
実線矢印で示すように、浴槽2内の浴槽水が洗浄水とし
て吸込み口14から吸い出され、ヘアキャッチャ4、循
環ポンプ6、三方切換部a、第2の電動バルブv2並び
に三方切換部Cを介して濾過槽8の下部出入口8bから
流入させられる。
■ The sequence controller 22 is connected to the remote control operation section 2.
When the command for the cleaning mode is received from 4, the first electric valve (1) and the fifth electric valve (5) are closed, and the second electric valve (v2) and the third electric valve (v3) are opened. The fourth electric valve v4 remains closed.Next, the sequence controller 22 drives the circulation pump 6 and performs the first cleaning for a predetermined time. The water in the bathtub 2 is sucked out as cleaning water from the suction port 14, and is passed through the hair catcher 4, the circulation pump 6, the three-way switching section a, the second electric valve v2, and the three-way switching section C to the lower entrance/exit of the filtration tank 8. 8b.

下部出入口8bから流入した洗浄水は、有孔仕切り板2
0を通り、濾材10を下から上へに通過して上部出入口
8aに至るが、濾材10中を通過する間に濾材10から
汚れが順次分離される。汚れを含んだ洗浄水は、上部出
入口f3a、三方切換部す、第3の電動バルブv3並び
に三方切換部eを介して排水管18から外部に排出され
る。
The cleaning water flowing in from the lower entrance/exit 8b is passed through the perforated partition plate 2
0, passes through the filter medium 10 from bottom to top, and reaches the upper entrance/exit 8a, but while passing through the filter medium 10, dirt is successively separated from the filter medium 10. The cleaning water containing dirt is discharged to the outside from the drain pipe 18 via the upper entrance/exit f3a, the three-way switching section S, the third electric valve v3, and the three-way switching section e.

シーケンスコントローラ22は、第1回洗浄時間T1を
カウントアンプすると循環ポンプ6を停止する。この第
1回洗浄時間TIは、試験で確認したように、洗浄のピ
ークが少し過ぎるまでの約45秒に設定される。洗浄中
において、濾過槽8上部の濾材10が舞い上がるが、第
1回洗浄時間T1は短時間であって、洗浄水の流量(例
えば321 /sin )もそれほど達(ないので、舞
い上がった濾材10が濾過槽8から流出されることはな
い、そして、循環ポンプ6の停止状態で、舞い上がった
濾材10および汚れが沈降していき、所定の待ち時間T
s(約20秒)が経過すると、完全に沈降し静止する。
The sequence controller 22 stops the circulation pump 6 after counting the first cleaning time T1. This first cleaning time TI is set to approximately 45 seconds, which is a period until the peak of cleaning has passed, as confirmed in a test. During washing, the filter medium 10 in the upper part of the filter tank 8 flies up, but the first washing time T1 is short and the flow rate of the washing water (for example, 321/sin) does not reach that much. There is no flow out from the filter tank 8, and when the circulation pump 6 is stopped, the filter medium 10 and dirt that have flown up settle down, and the predetermined waiting time T
After 20 seconds (approximately 20 seconds), it completely sinks and stands still.

■ シーケンスコントローラ22は、循環ポンプ6の停
止状態で待ち時間T、をカウントアップすると、循環ポ
ンプ6を再び駆動し、第2回目の洗浄を所定時間行う、
これにより、濾材lOおよび濾材lO中からの汚れの分
離がさらに促進される。シーケンスコントローラ22は
、第2回洗浄時間T重 (約30秒)をカウントアツプ
すると、循環ポンプ6を停止し、濾材10および汚れが
沈降静止するまでの待ち時間T0のカウントアツプを待
つ。
(i) When the sequence controller 22 counts up the waiting time T while the circulation pump 6 is stopped, the sequence controller 22 drives the circulation pump 6 again and performs the second cleaning for a predetermined period of time.
This further promotes the separation of dirt from the filter medium 1O and from the filter medium 1O. When the sequence controller 22 counts up the second cleaning time T (approximately 30 seconds), it stops the circulation pump 6 and waits for the count up of the waiting time T0 until the filter medium 10 and the dirt settle and stand still.

■ そのカウントアツプを待って、シーケンスコントロ
ーラ22は再び循環ポンプ6を駆動し、第3回目の洗浄
を所定時間行う、そして、第3洗浄時間Ts  (約2
0秒)をカウントアンプすると、循環ポンプ6を停止し
た後、第2の電動バルブV2および第3の電動バルブv
3を閉弁する。
■ Waiting for the count-up, the sequence controller 22 drives the circulation pump 6 again to perform the third cleaning for a predetermined time, and the third cleaning time Ts (approximately 2
0 seconds), after stopping the circulation pump 6, the second electric valve V2 and the third electric valve v
Close valve 3.

以上の3回にわたる分割洗浄により、濾材lOから汚れ
がほぼ完全に分離される。
Through the three separate washings described above, dirt is almost completely separated from the filter medium IO.

従来の連続洗浄では、例えば洗浄流量321/winの
もとで、6分間逆洗するので、この洗浄に要する使用水
量は、 32X6−1927 となるが、本実施例の場合には、Tl−45秒、Tl−
30秒、T3鴫20秒であるので、使用水量は、 32X (45+30+20)/601IT501とな
り、3分の1以下で済む。
In conventional continuous cleaning, for example, backwashing is performed for 6 minutes at a cleaning flow rate of 321/win, so the amount of water used for this cleaning is 32X6-1927, but in the case of this example, Tl-45 seconds, Tl-
Since it is 30 seconds and T3 is 20 seconds, the amount of water used is 32X (45+30+20)/601IT501, which is less than one third.

それでいて、濾材洗浄効率は、従来の90%から97〜
98%まで高めることができる。
However, the filter medium cleaning efficiency has improved from 90% to 97%.
It can be increased up to 98%.

見1叉1班 次に、第2実施例に係る濾過装置の洗浄動作を説明する
。この第2実施例では、第4の電動バルブv4と自動エ
ア抜き弁12とを動作させる。
Next, the cleaning operation of the filtration device according to the second embodiment will be explained. In this second embodiment, the fourth electric valve v4 and the automatic air bleed valve 12 are operated.

■′第1実施例の場合の■と同様に、シーケンスコント
ローラ22は、電動バルブV2.V3を開弁し、循環ポ
ンプ6を駆動して太い実線矢印で示す流路で第1回洗浄
時間TI (約45秒)にわたって濾過槽8を洗浄した
後、循環ポンプ6を停止して持ち時間Tゆ (約20秒
)の経過を待つ。
■' Similarly to ■ in the first embodiment, the sequence controller 22 controls the electric valve V2. After opening the valve V3 and driving the circulation pump 6 to wash the filtration tank 8 in the flow path indicated by the thick solid line arrow for the first washing time TI (approximately 45 seconds), the circulation pump 6 is stopped and the waiting time is Wait for 20 seconds (approximately 20 seconds).

■′クシ−ンスコントローラ22は、第2の電動バルブ
v2および第3の電動バルブ■3を閉弁し、かつ、第4
の電動バルブv4を開弁する。なお、第1の電動バルブ
v1および第5の電動バルブv5は閉弁状態を保ってい
る。第4の電動バルブv4の開弁によって、濾過槽8内
の水が、破線矢印で示すように、下部出入口8b、三方
切換部c、  d、第4の電動バルブv4並びに三方切
換部eを介して排水管18より排出される。このとき、
濾過槽8内部の減圧によって自動エア抜き弁12が開弁
し、濾過槽8内に空気が入るため、濾過槽8の水の排出
が促進される。この濾過槽8内の水の排出は、濾材10
内で濾材lOの上面より所定の高さL(濾過槽8の高さ
を75cmとした場合、30〜40cm)離れて生じる
ゴミなどの汚れが特に著しい位置Pに濾過槽8の水位が
低下するまでとする。この位置Pまで水位が低下するこ
とを水位センサ(図示せず)やタイマによって検出する
と、第4の電動バルブv4を閉弁する。
■' The action controller 22 closes the second electric valve v2 and the third electric valve ■3, and closes the fourth electric valve v2.
Open electric valve v4. Note that the first electric valve v1 and the fifth electric valve v5 remain closed. By opening the fourth electric valve v4, the water in the filtration tank 8 flows through the lower inlet/outlet 8b, the three-way switching parts c and d, the fourth electric valve v4, and the three-way switching part e, as shown by the broken line arrow. and is discharged from the drain pipe 18. At this time,
The automatic air bleed valve 12 opens due to the reduced pressure inside the filtration tank 8, and air enters the filtration tank 8, thereby promoting the discharge of water from the filtration tank 8. The water in the filter tank 8 is discharged through the filter medium 10.
The water level of the filtration tank 8 is lowered to a position P where dirt such as dirt generated at a predetermined height L (30 to 40 cm if the height of the filtration tank 8 is 75 cm) is particularly significant from the top surface of the filter medium 1O. up to. When a water level sensor (not shown) or a timer detects that the water level has decreased to this position P, the fourth electric valve v4 is closed.

■′クシ−ンスコントローラ22は、再び循環ポンプ6
を駆動し、第2回目の洗浄を第2回洗浄時間Tx(約3
0秒)にわたって行う、汚れが特に著しい位置Pまで一
旦水位を下げて再度の洗浄を行うから、その著しい汚れ
を洗浄によって濾材10から分離するのに抵抗が少なく
なり、その分離を効果的に行うことができる。そして、
循環ポンプ6を停止した後、第2の電動バルブv2およ
び第3の電動バルブv3を閉弁する。
■'The circulation pump 6
is driven, and the second cleaning is performed for the second cleaning time Tx (approximately 3
0 seconds), the water level is lowered once to the position P where the dirt is particularly significant, and the washing is performed again, so there is less resistance to separating the dirt from the filter medium 10 by washing, and the separation is performed effectively. be able to. and,
After stopping the circulation pump 6, the second electric valve v2 and the third electric valve v3 are closed.

以上によって、濾材lOから汚れがほぼ完全に分離され
る。
As a result of the above, dirt is almost completely separated from the filter medium IO.

本実施例の場合は、T+=45秒、”rz=−3゜秒で
あるので、洗浄のための使用水量は、32x (45+
30)/60=4(1となり、従来例の場合の1961
に比べて約5分の1程度ですむ、しかも、濾材洗浄効率
は第1実施例の場合よりも高くなり、はぼ100%近く
になる。
In the case of this example, T+=45 seconds and "rz=-3° seconds, so the amount of water used for cleaning is 32x (45+
30)/60=4(1, 1961 in the case of the conventional example)
In addition, the cleaning efficiency of the filter medium is higher than that of the first embodiment, and is nearly 100%.

なお、■′の前にも、濾過槽8内の水位をPの位置まで
下げると、−層高い濾材洗浄効率が得られる。
It should be noted that if the water level in the filter tank 8 is lowered to the position P before step 2', a -mega higher filter medium cleaning efficiency can be obtained.

〈発明の効果〉 以上説明したように、本発明によれば、比較的短時間の
洗浄を分割して行うのであるが、各回の洗浄時間は濾材
洗浄効率において洗浄効率の高い時点までであるから、
各回の洗浄において効率良く濾材を洗浄することができ
、従来の連続洗浄に比べて、格段に少ない使用水量のも
とて効率的な洗浄を行うことができるという効果を奏す
る。
<Effects of the Invention> As explained above, according to the present invention, cleaning is performed in relatively short periods of time, and the cleaning time for each time is up to the point at which the cleaning efficiency is high in terms of filter medium cleaning efficiency. ,
The filter medium can be efficiently cleaned in each cleaning, and compared to conventional continuous cleaning, the filter medium can be cleaned efficiently with a much smaller amount of water.

また、洗浄の停止中に濾過槽内の水を所定量だけ排水す
ることにより洗浄初期の抵抗を減少させれば、濾材中の
異物排出を効果的に行うことができるので、より一層効
率的な洗浄を行うことができるという効果を奏する。
In addition, by draining a predetermined amount of water in the filter tank while cleaning is stopped, reducing the resistance at the initial stage of cleaning, it is possible to effectively remove foreign matter from the filter medium, making it even more efficient. This has the effect that cleaning can be performed.

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

第1図は本発明の一実施例に係る濾過装置を示す概略構
成図である。第2図は濾材復元性能確認のための試験装
置の概略構成図、第3図は試験の結果得られた濾材洗浄
効率の特性図である。
FIG. 1 is a schematic configuration diagram showing a filtration device according to an embodiment of the present invention. FIG. 2 is a schematic configuration diagram of a test device for confirming filter medium restoration performance, and FIG. 3 is a characteristic diagram of filter medium cleaning efficiency obtained as a result of the test.

Claims (3)

【特許請求の範囲】[Claims] (1)濾材が収納されている濾過槽を洗浄する方法であ
って、濾過槽に対する洗浄水の導入と、洗浄水の導入停
止とを交互に繰り返すことを特徴とする濾過槽の洗浄方
法。
(1) A method for cleaning a filtration tank in which a filter medium is housed, the method comprising alternately repeating introduction of washing water into the filtration tank and stopping introduction of the washing water.
(2)請求項(1)において、洗浄水の導入時間は、洗
浄効率がピークに達するのに要する時間とし、洗浄水の
導入停止時間は、濾過槽内で舞い上がる汚れや濾材が沈
降するのに要する時間とすることを特徴とする濾過槽の
洗浄方法。
(2) In claim (1), the introduction time of the washing water is the time required for the washing efficiency to reach its peak, and the time for stopping the introduction of the washing water is the time required for the dirt and filter media that fly up in the filtration tank to settle. A method for cleaning a filtration tank, characterized in that it takes a long time.
(3)請求項(1)において、洗浄水の導入を停止した
とき、濾過槽内の水を所定量排水することを特徴とする
濾過槽の洗浄方法。
(3) The method for cleaning a filter tank according to claim (1), characterized in that when the introduction of cleaning water is stopped, a predetermined amount of water in the filter tank is drained.
JP2098166A 1990-04-13 1990-04-13 Filter tank cleaning method Expired - Fee Related JPH07121328B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2098166A JPH07121328B2 (en) 1990-04-13 1990-04-13 Filter tank cleaning method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2098166A JPH07121328B2 (en) 1990-04-13 1990-04-13 Filter tank cleaning method

Publications (2)

Publication Number Publication Date
JPH03296404A true JPH03296404A (en) 1991-12-27
JPH07121328B2 JPH07121328B2 (en) 1995-12-25

Family

ID=14212494

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2098166A Expired - Fee Related JPH07121328B2 (en) 1990-04-13 1990-04-13 Filter tank cleaning method

Country Status (1)

Country Link
JP (1) JPH07121328B2 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05301008A (en) * 1992-03-30 1993-11-16 Nippon Rokaki Kk Device for washing filter
JPH0655008A (en) * 1992-08-07 1994-03-01 Massey Kinzoku Kk Backwashing method for filter
JP2001120917A (en) * 1999-10-26 2001-05-08 Tokyo Metropolis Backward washing method of rapid washing filter basin
JP2012091174A (en) * 2012-01-13 2012-05-17 Kurita Water Ind Ltd Method for cleaning electric deionizer
WO2013084854A1 (en) * 2011-12-05 2013-06-13 栗田工業株式会社 Packed column backwashing method
JP2019052439A (en) * 2017-09-13 2019-04-04 中国電力株式会社 Capping simulation device
US10807023B2 (en) 2009-11-11 2020-10-20 Nordic Water Products Ab Method for the treatment of water and wastewater

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49109965A (en) * 1973-02-23 1974-10-19
JPS5372358A (en) * 1976-12-10 1978-06-27 Hitachi Metals Ltd Filter-medium cleaning method

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49109965A (en) * 1973-02-23 1974-10-19
JPS5372358A (en) * 1976-12-10 1978-06-27 Hitachi Metals Ltd Filter-medium cleaning method

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05301008A (en) * 1992-03-30 1993-11-16 Nippon Rokaki Kk Device for washing filter
JPH0655008A (en) * 1992-08-07 1994-03-01 Massey Kinzoku Kk Backwashing method for filter
JP2001120917A (en) * 1999-10-26 2001-05-08 Tokyo Metropolis Backward washing method of rapid washing filter basin
US10807023B2 (en) 2009-11-11 2020-10-20 Nordic Water Products Ab Method for the treatment of water and wastewater
WO2013084854A1 (en) * 2011-12-05 2013-06-13 栗田工業株式会社 Packed column backwashing method
JPWO2013084854A1 (en) * 2011-12-05 2015-04-27 栗田工業株式会社 Backwashing method for packed tower
JP2012091174A (en) * 2012-01-13 2012-05-17 Kurita Water Ind Ltd Method for cleaning electric deionizer
JP2019052439A (en) * 2017-09-13 2019-04-04 中国電力株式会社 Capping simulation device

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