JPS6210759B2 - - Google Patents
Info
- Publication number
- JPS6210759B2 JPS6210759B2 JP59138032A JP13803284A JPS6210759B2 JP S6210759 B2 JPS6210759 B2 JP S6210759B2 JP 59138032 A JP59138032 A JP 59138032A JP 13803284 A JP13803284 A JP 13803284A JP S6210759 B2 JPS6210759 B2 JP S6210759B2
- Authority
- JP
- Japan
- Prior art keywords
- belt
- cloth
- cleaning
- web
- sludge
- 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
- 239000004744 fabric Substances 0.000 claims description 38
- 238000004140 cleaning Methods 0.000 claims description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 238000005406 washing Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 6
- 239000010419 fine particle Substances 0.000 claims description 5
- 238000005507 spraying Methods 0.000 claims description 3
- 239000010802 sludge Substances 0.000 description 10
- 230000001154 acute effect Effects 0.000 description 5
- 230000035699 permeability Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000018044 dehydration Effects 0.000 description 3
- 238000006297 dehydration reaction Methods 0.000 description 3
- 229920000728 polyester Polymers 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 239000004677 Nylon Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B9/00—Presses specially adapted for particular purposes
- B30B9/02—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material
- B30B9/24—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material using an endless pressing band
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/04—Filters with filtering elements which move during the filtering operation with filtering bands or the like supported on cylinders which are impervious for filtering
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtration Of Liquid (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、モノフイラメントの基布にポリエス
テル、ナイロン等のウエツブをニードルパンチン
グした無端状のフエルト布ベルトを用いたベル
トプレス型の泥状物脱水機において、前記フエル
ト布ベルトを効果的に洗浄する方法に関するも
のである。[Detailed Description of the Invention] [Industrial Application Field] The present invention is a belt press-type slurry material using an endless felt cloth belt made by needle-punching a web of polyester, nylon, etc. on a monofilament base fabric. The present invention relates to a method for effectively cleaning the felt cloth belt in a dehydrator.
無端状布ベルトで汚泥等の泥状物（以下「汚
泥」という）を搬送しつつ複数個の回転するロー
ラで加圧脱水する最近のベルトプレス型脱水機
は、脱水ケーキの低含水率をめざして高面圧、長
時間脱水を指向する傾向にある。
Recent belt press type dehydrators use endless cloth belts to transport sludge and other muddy materials (hereinafter referred to as ``sludge'') and dehydrate them under pressure using multiple rotating rollers, aiming for low moisture content in the dehydrated cake. There is a tendency towards high surface pressure and long-term dehydration.
一般に、モノフイラメント布ベルトでは、高
面圧で長時間脱水すると、汚泥の布ベルトへの
食い込みが増し、最悪の場合には布ベルトの裏
側にまで汚泥が通過することがあり、著しく脱水
ケーキの剥離性が悪化し、布ベルトを洗浄して
も復元せず、布ベルトの通気度が低下するため
重力脱水部における分離水の過が十分に行なえ
なくなり、処理量が低下する上、脱水ケーキ含水
率が上昇し、運転に支障をきたす。 In general, with monofilament cloth belts, if dewatering is performed for a long time under high surface pressure, the sludge will dig into the cloth belt, and in the worst case, the sludge may even pass through to the back side of the cloth belt, resulting in a significant increase in the dewatered cake. The peelability deteriorates, the cloth belt does not recover even after washing, and the air permeability of the cloth belt decreases, making it impossible for the separated water to pass through in the gravity dewatering section, resulting in a decrease in throughput, and the dehydrated cake becomes hydrated. rate increases, making it difficult to drive.
したがつて、高面圧の場合には、布ベルトと
してモノフイラメントの基布にポリエステル、ナ
イロン等のウエツブをニードルパンチングしたフ
エルト布ベルトを装備することが多く、事実、
脱水ケーキの剥離性はモノフイラメント布ベル
トより優れている。しかし、フエルト布ベルト
においても汚泥による汚れが当然生じ、洗浄を怠
るとモノフイラメント布ベルトと同様の結果を
招く、つまり、布ベルトの洗浄は、ベルトプレ
ス型脱水機において非常に重要な操作である。 Therefore, in cases of high surface pressure, felt cloth belts are often equipped with needle-punched polyester, nylon, etc. webs on a monofilament base fabric.
The peelability of the dehydrated cake is better than that of a monofilament cloth belt. However, felt cloth belts naturally become contaminated with sludge, and if cleaning is neglected, the same results as monofilament cloth belts will result.In other words, cleaning cloth belts is a very important operation in belt press type dehydrators. .
モノフイラメント布ベルトの洗浄方法におけ
る思想は、ベルト表面あるいは織目に食い込んだ
微粒子を高圧で織目を通して洗い去ることである
ため、洗浄水噴出用のノズル角度はベルト面に対
して直角で、ベルトの表・裏関係なく洗浄するこ
とができる。しかし、フエルト布ベルトの場
合、汚泥中の固形物は、基布まで到達することは
ほとんどなく大部分はウエツブに捕捉されてい
る。したがつて、布ベルトの裏側から洗浄して
も全く洗浄効果は現われない。
The idea behind the cleaning method for monofilament cloth belts is to use high pressure to wash away fine particles that have bitten into the belt surface or the weave through the weave, so the nozzle angle for jetting cleaning water is perpendicular to the belt surface, It can be washed regardless of the front or back side. However, in the case of a felt cloth belt, the solids in the sludge rarely reach the base fabric and are mostly trapped in the web. Therefore, even if the cloth belt is cleaned from the back side, no cleaning effect will be obtained.
本発明は、前記フエルト布ベルトの洗浄方法
を改良し、常に効果的洗浄を行つてその復元を確
実にし、もつてフエルト布ベルトの長所を十分
に発揮させようとするものである。 The present invention aims to improve the method of cleaning the felt cloth belt, to ensure effective cleaning at all times to ensure its restoration, and to fully utilize the advantages of the felt cloth belt.
本発明は、泥状物を無端状のフエルト布ベル
トのウエツブ面で搬送し、複数個の回転するロー
ラで加圧脱水するベルトプレス型脱水機におい
て、少なくとも前記泥状物を搬送したフエルト
布ベルトのウエツブ面に噴射角度15〜75゜の範囲
で洗浄水を噴射し、付着微粒子を洗い流すことを
特徴とする布の洗浄方法である。
The present invention provides a belt press type dewatering machine in which mud is conveyed on the web surface of an endless felt cloth belt and dewatered under pressure with a plurality of rotating rollers. This is a cloth cleaning method characterized by spraying cleaning water onto the web surface at a spray angle of 15 to 75 degrees to wash away adhered fine particles.
フエルト布ベルトには、片面だけにウエツブ
をニードルパンチングしたものを両面にウエツブ
をニードルパンチングしたものがあり、そのウエ
ツブ面にて汚泥を搬送しつつ複数個の回転ローラ
で加圧脱水されるものであるが、洗浄に際しては
いずれもベルトの汚泥と接触した面に洗浄水を噴
出するものである。そして洗浄水を噴出すべきノ
ズルの角度をベルト面に対して直角にすると、フ
エルト布ベルトは通常のモノフイラメント布
に比較して若干通気性に劣ることや、ウエツブの
根に微粒子が捕捉される懸念があり、洗浄水圧力
も高圧が要求されあまり好ましくない。例えば、
洗浄水圧力は通常のモノフイラメント布の洗浄
と同様５〜６Kgｆ／cm2が要求される。
Some felt cloth belts have a web needle-punched on one side, while others have needle-punched webs on both sides, and the sludge is conveyed on the web surface and dehydrated under pressure with multiple rotating rollers. However, during cleaning, cleaning water is jetted onto the surface of the belt that came into contact with the sludge. When the angle of the nozzle that sprays the cleaning water is set perpendicular to the belt surface, felt cloth belts have slightly lower breathability than ordinary monofilament cloth, and fine particles are trapped in the roots of the web. There are concerns, and high pressure of the cleaning water is required, which is not very desirable. for example,
The washing water pressure is required to be 5 to 6 kgf/cm 2 as in the case of washing ordinary monofilament cloth.
そこで、布面に対しノズル角度を鋭角にすれ
ば、ベルト面への力が分散され、ウエツブをほぐ
し微粒子を洗い流すことになり効果的で、洗浄は
ウエツブの振動と相俟つて、モノフイラメント
布よりも一段と復元力を向上させることができ、
洗浄水圧力も例えば２〜４Kgｆ／cm2程度の低圧で
よい。洗浄方向はベルトの進方向と逆方向の２方
向に鋭角とするのが好ましく、まず、ベルトの進
行方向と逆方向鋭角に洗浄しウエツブをほぐし固
形物を浮上させ、ベルトの進行方法と同方向鋭角
で、浮上した固形物を洗い流すようにすればよい
が、必ずしも２方向にすることなく１方向でもよ
く、もし洗浄方向を１方向鋭角に限定するなら、
ベルトの進行方向に洗浄する方がよい。また、前
記ノズルの角度はベルト面に対して15〜75゜の範
囲とすることが必要でる。 Therefore, by making the nozzle angle acute with respect to the cloth surface, the force on the belt surface is dispersed, loosening the web and washing away fine particles, which is effective. can further improve resilience,
The pressure of the cleaning water may also be as low as, for example, 2 to 4 kgf/cm 2 . It is preferable that the cleaning direction be made at an acute angle in two directions, that is, in the direction in which the belt advances and in the opposite direction.First, the cleaning direction is made at an acute angle in the direction opposite to the direction in which the belt travels to loosen the web and float the solid matter, and then in the same direction as the direction in which the belt advances. It is sufficient to wash away the floating solids at an acute angle, but it does not necessarily have to be in two directions, it may be in one direction, and if the washing direction is limited to one direction at an acute angle,
It is better to wash in the direction of belt travel. Further, it is necessary that the angle of the nozzle is in the range of 15 to 75 degrees with respect to the belt surface.
また、表面洗浄によりベルト裏面に通過した粒
子を除去するために極低圧で裏側より洗浄すれば
さらに効果的であり、その場合の洗浄水圧力は２
Kgｆ／cm2以下の低圧で行うことができる。 In addition, it is more effective to clean from the back side at extremely low pressure to remove particles that have passed through to the back side of the belt during surface cleaning; in that case, the cleaning water pressure is 2.
It can be carried out at a low pressure of Kgf/cm 2 or less.
次に本発明の実施例を述べる。 Next, examples of the present invention will be described.
使用した脱水機は、モノフイラメントの基布に
ポリエステルのウエツブを片面にニードルパンチ
ングしたフエルト布ベルトを用いたベルトプレ
ス型脱水機であり、ウエツブ面を表面として汚泥
を搬送し、加圧脱水した。脱水供試汚泥は、下水
処理において発生した活性汚泥で、洗浄ノズル角
度は表面洗浄の場合45゜で布ベルトの進行方向
に対して同方向と逆方向の２方向とし、裏面洗浄
の場合90゜とした。脱水前の布ベルト通気度は
130c.c.／cm2／secであつたが、ある時間脱水後は92
c.c.／cm2／secまで低下した。まず、裏面洗浄のみ
を行つた場合、洗浄水圧力６Kgｆ／cm2で洗浄した
が全く効果なく通気度は92c.c.／cm2／secと通気度
は全く回復しなかつた。一方、表面洗浄を同様の
洗浄水圧力で行つた場合、通気度129c.c.／cm2／sec
と全面回復した。また、洗浄水圧力を６Kgｆ／cm2
から２Kgｆ／cm2に低下させても同様に回復した。
ノズル角度を60゜、30゜と変化させても同様に回
復したが、ノズルを90゜とすると115c.c.／cm2／sec
と回復力が低下した。 The dehydrator used was a belt press type dehydrator using a felt cloth belt with a monofilament base fabric and a polyester web needle-punched on one side, and the sludge was conveyed with the web side as the surface and dewatered under pressure. The dewatered sample sludge was activated sludge generated during sewage treatment, and the cleaning nozzle angle was 45° for surface cleaning and in two directions, the same direction and the opposite direction to the traveling direction of the cloth belt, and 90° for back cleaning. And so. The air permeability of the cloth belt before dehydration is
It was 130c.c./cm 2 /sec, but after a certain period of dehydration it was 92c.c./cm 2 /sec.
It decreased to cc/cm 2 /sec. First, when only the back side was washed, washing with a washing water pressure of 6 kgf/cm 2 had no effect at all, and the air permeability was 92 c.c./cm 2 /sec, which did not recover the air permeability at all. On the other hand, when surface cleaning is performed with the same cleaning water pressure, the air permeability is 129 c.c./cm 2 /sec.
He made a full recovery. In addition, the cleaning water pressure should be increased to 6Kgf/cm 2
Even when the temperature was lowered from 2 Kgf/cm 2 , the same recovery occurred.
The same recovery occurred when the nozzle angle was changed to 60° and 30°, but when the nozzle was set to 90°, the rate was 115 c.c./cm 2 /sec.
and the ability to recover decreased.
以上述べたように本発明によれば、フエルト
布ベルトの洗浄を常に容易に効果的に行つてその
復元を確実にし、フエルト布ベルトの長所を十
分に発揮させることができるものである。
As described above, according to the present invention, the felt cloth belt can always be easily and effectively washed to ensure its restoration, and the advantages of the felt cloth belt can be fully exhibited.
Claims (1)
ツブ面で搬送し、複数個の回転するローラで加圧
脱水するベルトプレス型脱水機において、少なく
とも前記泥状物を搬送したフエルト布ベルトの
ウエツブ面に噴射角度15〜75゜の範囲で洗浄水を
噴射し、付着微粒子を洗い流すことを特徴とする
布の洗浄方法。 ２ 前記洗浄水の噴射方向を前記ベルトの進行方
向に対して同方向と逆方向の２方向としたもので
ある特許請求の範囲第１項記載の布の洗浄方
法。[Scope of Claims] 1. A belt press type dehydrator in which mud is transported on the web surface of an endless felt cloth belt and dehydrated under pressure with a plurality of rotating rollers, at least the mud is transported. A cloth cleaning method characterized by spraying cleaning water onto the web surface of a felt cloth belt at a spraying angle of 15 to 75 degrees to wash away adhering fine particles. 2. The cloth washing method according to claim 1, wherein the washing water is ejected in two directions: the same direction and the opposite direction with respect to the traveling direction of the belt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13803284A JPS6138798A (en) | 1984-07-05 | 1984-07-05 | Method of cleaning filter cloth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13803284A JPS6138798A (en) | 1984-07-05 | 1984-07-05 | Method of cleaning filter cloth |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14823488A Division JPH01104499A (en) | 1988-06-17 | 1988-06-17 | Method for washing filter cloth |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6138798A JPS6138798A (en) | 1986-02-24 |
| JPS6210759B2 true JPS6210759B2 (en) | 1987-03-07 |
Family
ID=15212448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13803284A Granted JPS6138798A (en) | 1984-07-05 | 1984-07-05 | Method of cleaning filter cloth |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6138798A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5530316B2 (en) * | 2010-09-09 | 2014-06-25 | アマノ株式会社 | Oil mist removal device |
| JP6323906B2 (en) * | 2014-07-15 | 2018-05-16 | アマノ株式会社 | Oil mist removal device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4724334U (en) * | 1971-04-09 | 1972-11-18 | ||
| JPS5751891A (en) * | 1980-09-12 | 1982-03-26 | Matsushita Electric Works Ltd | Felt washing method in papermaking machine |
| JPS58135799A (en) * | 1982-02-04 | 1983-08-12 | Kobe Steel Ltd | Washing device for belt press type dehydrator |
| JPS5982198A (en) * | 1982-11-01 | 1984-05-12 | Kubota Ltd | Belt press type dehydrator |
| JPS5944698B2 (en) * | 1975-11-06 | 1984-10-31 | 松下電器産業株式会社 | The most important thing to do |
| JPS5949494B2 (en) * | 1978-05-15 | 1984-12-03 | 株式会社東芝 | Steam heating cooker |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6032949Y2 (en) * | 1982-09-17 | 1985-10-01 | 株式会社クボタ | Belt press type dehydrator |
| JPS5949494U (en) * | 1982-09-21 | 1984-04-02 | 市川毛織株式会社 | Sludge concentration and dehydration equipment |
-
1984
- 1984-07-05 JP JP13803284A patent/JPS6138798A/en active Granted
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4724334U (en) * | 1971-04-09 | 1972-11-18 | ||
| JPS5944698B2 (en) * | 1975-11-06 | 1984-10-31 | 松下電器産業株式会社 | The most important thing to do |
| JPS5949494B2 (en) * | 1978-05-15 | 1984-12-03 | 株式会社東芝 | Steam heating cooker |
| JPS5751891A (en) * | 1980-09-12 | 1982-03-26 | Matsushita Electric Works Ltd | Felt washing method in papermaking machine |
| JPS58135799A (en) * | 1982-02-04 | 1983-08-12 | Kobe Steel Ltd | Washing device for belt press type dehydrator |
| JPS5982198A (en) * | 1982-11-01 | 1984-05-12 | Kubota Ltd | Belt press type dehydrator |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6138798A (en) | 1986-02-24 |
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