JPH01104499A - Method for washing filter cloth - Google Patents
Method for washing filter clothInfo
- Publication number
- JPH01104499A JPH01104499A JP14823488A JP14823488A JPH01104499A JP H01104499 A JPH01104499 A JP H01104499A JP 14823488 A JP14823488 A JP 14823488A JP 14823488 A JP14823488 A JP 14823488A JP H01104499 A JPH01104499 A JP H01104499A
- Authority
- JP
- Japan
- Prior art keywords
- belt
- felt
- cleaning
- web
- cloth
- 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
Links
- 239000004744 fabric Substances 0.000 title claims abstract description 63
- 238000000034 method Methods 0.000 title claims description 6
- 238000005406 washing Methods 0.000 title abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000010419 fine particle Substances 0.000 claims abstract description 7
- 229920000728 polyester Polymers 0.000 claims abstract description 7
- 239000004677 Nylon Substances 0.000 claims abstract description 6
- 229920001778 nylon Polymers 0.000 claims abstract description 6
- 238000004140 cleaning Methods 0.000 claims description 34
- 239000010802 sludge Substances 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 4
- 238000004080 punching Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000002002 slurry Substances 0.000 abstract 2
- 230000035699 permeability Effects 0.000 description 8
- 230000018044 dehydration Effects 0.000 description 5
- 238000006297 dehydration reaction Methods 0.000 description 5
- 230000001154 acute effect Effects 0.000 description 4
- 230000003247 decreasing effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- 239000002245 particle Substances 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 101100474383 Escherichia coli (strain K12) rpsO gene Proteins 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Filtering Materials (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、モノフィラメントの基布にポリエステル、ナ
イロン等のウェッブをニードルパンチングした無端状の
フェル）Ｆ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、前記フェルト炉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 muddy belt using an endless felt fabric 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 furnace cloth belt in a material dehydrator.
無端状が布ベルトで汚泥等の泥状物（以下「汚泥」とい
う）を挟持、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 an endless cloth belt to sandwich and convey muddy materials such as sludge (hereinafter referred to as "sludge"), while dewatering under pressure using multiple rotating rollers. There is a trend toward high surface pressure and long-term dehydration in order to achieve higher efficiency.
一般に、モノフィラメントが布ベルトでは、高面圧で長
時間脱水すると、汚泥のが布ベルトへの食い込みが増し
、最悪の場合には炉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、炉
布ベルトを洗浄しても復元せず、炉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通過が十分に
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, when monofilament is used as a fabric belt, dewatering under high surface pressure for a long period of time will cause the sludge to bite into the fabric belt, and in the worst case, the sludge may pass through to the back side of the furnace fabric belt, resulting in significant dewatering. The peelability of the cake deteriorates, the furnace cloth belt does not recover even after washing, and the air permeability of the furnace cloth belt decreases, making it impossible for the separated water to pass through the gravity dewatering section sufficiently, resulting in a decrease in throughput. , the water content of the dehydrated cake will increase, causing problems in operation.
したがって、高面圧の場合には、炉布ベルトとしてモノ
フィラメントの基布にポリエステル、ナイロン等のウェ
ッブをニードフレパンチングしたフヱルトが布ベルト（
以下単に「フェルトが布ベルト」と言う）を装備するこ
とが多く、このフェルト炉布ベルトではウェッブが層を
なして緻密にかつ複雑にからみあっており、泥状物がフ
ェルトが布ベルトに接する時、泥状物はウェッブ層で接
し加圧されることになり、脱水ケーキの剥離性はモノフ
ィラメントが布ベルトより優れている。しかし、このよ
うなフェルトが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ィラメントが布ベルトと同
様の結果を招く、つまり、炉布ベルトの洗浄は、ベルト
プレス型脱水機において非常に重要な操作であった。Therefore, in the case of high surface pressure, a fabric belt (fabric belt) can be used as a furnace fabric belt by needling a web of polyester, nylon, etc. onto a monofilament base fabric.
In this felt kiln cloth belt, the web is densely and intricately intertwined in layers, and when the felt comes into contact with the cloth belt, muddy substances are , the sludge comes into contact with the web layer and is pressurized, and the monofilament is superior to the cloth belt in terms of peelability of the dehydrated cake. However, this kind of felt naturally causes stains with sludge on cloth belts, and if cleaning is neglected, monofilament will have the same result as cloth belts. In other words, cleaning furnace cloth belts is very difficult in belt press type dehydrators. It was an important operation.
モノフィラメントが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。The idea behind the monofilament cleaning method for 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 spraying the cleaning water is perpendicular to the belt surface and It can be washed regardless of the front or back side.
しかし、フェルト力布ベルトの場合、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ェッ
ブに捕捉されている。したがって、炉布ベルトの裏側か
ら洗浄しても全く洗浄効果は現われない。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 furnace cloth belt is cleaned from the back side, no cleaning effect will be obtained.
このため、フェルト炉布ベルトのウェッブ面である表面
の洗浄に際して、洗浄水の噴射角度を直角にすると、複
雑にからんだウェッブ層に泥状物が入り込み、さらに基
布の目に汚泥粒子が捕捉されることになり、基布にまで
到達した粒子を除去するには洗浄水の圧力を非常に高圧
にする必要があって非効率的である。For this reason, when cleaning the web surface of a felt furnace cloth belt, if the injection angle of the cleaning water is set at a right angle, sludge will enter the intricately tangled web layer, and furthermore, sludge particles will form in the holes of the base fabric. In order to remove the trapped particles that have reached the base fabric, the pressure of the washing water must be extremely high, which is inefficient.
本発明は、前記フェル）Ｆ布ベルトの洗浄方法を改良し
、常に効果的洗浄を行ってその復元を確実にし、もって
フェルトル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 Feltl cloth belt, to constantly carry out effective cleaning to ensure its restoration, and thereby to fully utilize the advantages of the Feltl cloth belt.
本発明は、泥状物を１対の無端状が布ベルトで挟持、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、前記無端状が布ベルトの少なく
とも一方に、基布にポリエステル、ナイロン等のウェッ
ブをニードルパンチングしたフェルトが布ベルトを使用
し、該フェルトが布ベルトの前記泥状物を挟持、搬送し
たウェッブ面に噴射角度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ろ布の
洗浄方法である。The present invention provides a belt press type dewatering machine in which a pair of endless shapes sandwich and convey mud between cloth belts, and pressurizes and dewaters the mud with a plurality of rotating rollers. , a cloth belt is used, and the felt is made by needle-punching a web of polyester, nylon, etc. on the base fabric, and the felt grips the muddy material of the cloth belt, and the web surface that is conveyed is cleaned at a spray angle of 15 to 75 degrees. This is a filter cloth cleaning method characterized by jetting water to wash away adhering fine particles.
本発明では、ベルトプレス型脱水機の１対の無端状が布
ベルトのうち、少なくとも一方に、基布にポリエステル
、ナイロン等のウェッブを、ニードルパンチングしたフ
ェルトが布ベルトを使用しており、このフェルト力布ベ
ルトには、片面だけにウェッブをニードルパンチングし
たものと両面にウェッブをニードルパンチングしたもの
があり、そのウェッブ面にて汚泥を挟持、！ｇ！送しつ
つ複数個の回転ローラで加圧脱水するものであるが、洗
浄に際してはいずれもベルトの汚泥と接触したウェッブ
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、
フェルトが布ベルトは通常のモノフィラメントが布に比
較して若干通気性に劣ることや、ウェッブの根に微粒子
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０例えば、洗浄水圧力は通常のモ
ノフィラメントが布の洗浄と同様５〜６１ｇｆ／ｃｊが
要求される。In the present invention, at least one of the pair of endless cloth belts of the belt press type dehydrator uses a web of polyester, nylon, etc. as the base fabric and a cloth belt made of needle-punched felt. There are two types of felt force cloth belts: one with a needle-punched web on one side and one with a needle-punched web on both sides.The web side holds the sludge! g! The web is dewatered under pressure using a plurality of rotating rollers while being conveyed, and during cleaning, cleaning water is jetted onto the surface of the web that has come into contact with the sludge on the belt. Then, if the angle of the nozzle that sprays cleaning water is set at right angles to the belt surface,
Felt cloth belts are not very desirable because they have slightly lower breathability than ordinary monofilament cloth, and there is a concern that fine particles may be trapped in the roots of the web, and high pressure is required for cleaning water. The cleaning water pressure required for ordinary monofilament is 5 to 61 gf/cj, similar to when cleaning cloth.
そこで、フェルトが布ベルトのウェッブ面に対しノズル
角度を１５〜７５°の鋭角にすれば、ウェッブ面への力
が分散され、ウェッブをほぐし微粒子を洗い流すことに
なり効果的で、洗浄はウェッブの振動と相俟って、モノ
フィラメントが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／−程度の低
圧でよい。Therefore, if the felt nozzle angle is set at an acute angle of 15 to 75 degrees with respect to the web surface of the cloth belt, the force on the web surface will be dispersed, loosening the web and washing away fine particles, which will be effective. Coupled with vibration, monofilament can improve the restoring force to a greater degree than cloth, and the cleaning water pressure may be as low as, for example, 2 to 4 kgf/-.
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
に洗浄してウェッブをほぐし固形物を浮上させ、次にベ
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、ノズルの取付は位置によって
は、ベルトの進行方向と同方向鋭角で洗浄したのち、ベ
ルトの進行方向と逆方向鋭角で洗浄するもよい。また、
この洗浄は、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
が必要である。It is preferable that the cleaning direction be made at an acute angle in two directions, that is, the direction in which the belt advances and the direction opposite to the direction in which the belt advances. It is best to wash away the floating solids at an acute angle in the same direction as the belt. You may do so. Also,
This cleaning does not necessarily have to be done in two directions, but can be done in one direction. If the cleaning direction is limited to one direction at an acute angle, it is better to clean in the traveling direction of the belt, and the angle of the nozzle should be set relative to the belt surface. It is necessary that the angle is in the range of 15 to 75 degrees.
また、表面洗浄によりベルト裏面に通過した粒子を除去
するために極く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 ｋｉｒ ｆ ／−
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 in order to remove particles that have passed to the back side of the belt by surface cleaning, and the cleaning water pressure in that case is 2 kir f /-
It can be carried out at low pressures such as:
次に本発明の実施例を述べる。 Next, examples of the present invention will be described.
実施例１
使用した脱水機は、モノフィラメントの基布にポリエス
テルのウェッブを片面にニードルパンチングした無端状
のフェルトｔｐ布ベルトを１対用いたベルトプレス型脱
水機であり、食品工業排水処理より発生した余剰汚泥を
、フェルトが布ベルトのウェッブ面を対向させてこの間
に挟持、搬送しながら脱水した。Example 1 The dehydrator used was a belt press type dehydrator using a pair of endless felt TP cloth belts with a monofilament base fabric and a polyester web needle-punched on one side. Excess sludge was dehydrated while being held and conveyed between the felt and the cloth belt with their web surfaces facing each other.
脱水前のフェルトＦ布ベルトの通気度は１３０ｃｃ／ａ
ｊ／ｓｅｃであったが、ある時間脱水後は８０ｃｃ／ｃ
ｄ／ｓｅＣまで低下した。The air permeability of the felt F cloth belt before dehydration is 130cc/a
j/sec, but after a certain period of dehydration it became 80cc/c.
The temperature decreased to d/secC.
このフェル１−ｔＦ布ベルトの表面たるウェッブ面の洗
浄に当り、表面洗浄ノズル角度は６０°で、その噴射方
向をフェルトル布ベルトの進行方向と同方向とし、裏面
洗浄ノズル角度を９０’とした。When cleaning the web surface, which is the front surface of this Fell 1-tF cloth belt, the front surface cleaning nozzle angle was 60°, the spray direction was the same as the traveling direction of the Feltl cloth belt, and the back surface cleaning nozzle angle was 90'. .
まず、裏面洗浄のみを行った場合、洗浄水圧力６ ｋｇ
ｆ ／−で洗浄したが、全く効果なく通気度は８Ｑ
ｃｃ ／ ａｉ ／ ｓｅｃと変化しなかった。First, when only the back side is washed, the washing water pressure is 6 kg.
I washed it with f/-, but it had no effect and the air permeability was 8Q.
There was no change in cc/ai/sec.
−′方、表面洗浄を同様の圧力で行った場合、通気度１
２５ ｃｃ／ｃｊ／ｓｅｃとほぼ全面回復した。ま’Ｉ
ｓ、洗浄水圧力を６ ｋ、 ｆ ／−から２ｋｇｆ／ａ
Ｊに低下させても同様に回復し、ノズル角度を７５”。-' On the other hand, when surface cleaning is performed at the same pressure, the air permeability is 1
It has almost completely recovered to 25 cc/cj/sec. Ma'I
s, wash water pressure from 6 k, f/- to 2 kgf/a
Even if it is lowered to J, it will recover in the same way, and the nozzle angle will be 75”.
３０°、１５°と変化させても同様に回復した。Similar recovery was achieved even when the angle was changed to 30° and 15°.
さらに、ノズル角度を９０”とすると、その通気度は１
００ ｃｃ／ｃｄ／ｓｅｃとなり、回復力が低下した。Furthermore, if the nozzle angle is 90", the air permeability is 1
00 cc/cd/sec, and the recovery power decreased.
実施例２
実施例１と同様のフェルトが布ベルトを装着したベルト
プレス型脱水機を用い、下水処理より発生した活性汚泥
を、フェルトが布ベルトのウェッブ面を対向させてこの
間に挟持、搬送しながら脱水した。Example 2 Using a belt press type dehydrator equipped with a felt cloth belt similar to that in Example 1, activated sludge generated from sewage treatment was sandwiched and conveyed between the felt and the web surfaces of the cloth belt facing each other. I got dehydrated.
脱水前のフェルトル布ベルトの通気度は１３０ｃｃ ／
ａＪ ／ ｓｅｃであったが、ある時間脱水後は９２
ｃｃ／ｄ／ｓｅｃまで低下した。The air permeability of the felt cloth belt before dehydration is 130cc/
aJ/sec, but after a certain period of dehydration it was 92
It decreased to cc/d/sec.
このフェル）ｔＦ布ベルトの洗浄に当り、表面洗浄ノ丙
ル角度は表面洗浄の場合４５°＜ｐ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。When cleaning this Fer)tF fabric belt, the angle of the front cleaning nozzle is 45° for front 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.
まず、裏面洗浄のみを行った場合、洗浄水圧力６ ｋｇ
ｆ ／−で洗浄したが全く効果なく通気度は９２ｃｃ
／ｃｊ／ｓｅｃと全く回復しなかった。First, when only the back side is washed, the washing water pressure is 6 kg.
I washed it with f/-, but it had no effect and the air permeability was 92cc.
/cj/sec and did not recover at all.
一方、表面洗浄を同様の洗浄水圧力で行った場合、通気
度１２９ ｃｃ／ ｃｊ ／ ｓｅｃと全面回復した。On the other hand, when the surface was washed with the same washing water pressure, the air permeability was fully recovered to 129 cc/cj/sec.
また、洗浄水圧力を６ｋｇｆ／ａＪから２ ｋｇ ｆ
／−に低下させても同様に回復した。ノズル角度を６０
°。In addition, the cleaning water pressure was increased from 6 kgf/aJ to 2 kgf/aJ.
Even when the temperature was lowered to /-, it recovered in the same way. Nozzle angle 60
°.
３０” と変化させても同様に回復したが、ノズルを９
０” とすると１１５ｃｃ／ａｊ／ｓｅｃと回復力が低
下した。The same recovery occurred when the nozzle was changed to 9.
0'', the recovery power decreased to 115cc/aj/sec.
以上述べたように本発明によれば、フェルトｔＦ布ベル
トの洗浄を常に容易に効果的に行ってその復元を確実に
し、フェル）Ｆ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 tF cloth belt can always be easily and effectively washed to ensure its restoration, and the advantages of the felt tF cloth belt can be fully exhibited. .
特許出願人 荏原インフィルコ株式会社特許出願人
東 京 都Patent applicant Ebara Infilco Corporation Patent applicant
Tokyo
Claims (1)
、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、前記無端状ろ布ベルトの少なくとも
一方に、基布にポリエステル、ナイロン等のウェッブを
ニードルパンチングしたフェルトろ布ベルトを使用し、
該フェルトろ布ベルトの前記泥状物を挟持、搬送したウ
ェッブ面に噴射角度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ろ布の洗浄
方法。(1) In a belt press type dehydrator in which sludge is held and conveyed between a pair of endless filter cloth belts and dehydrated under pressure with a plurality of rotating rollers, at least one of the endless filter cloth belts is provided with: Using a felt filter belt made of needle-punched polyester, nylon, etc. web as the base fabric,
A method for cleaning a filter cloth, which comprises jetting cleaning water at a jetting angle of 15 to 75 degrees onto the web surface of the felt filter cloth belt on which the muddy material is sandwiched and conveyed to wash away adhering fine particles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14823488A JPH01104499A (en) | 1988-06-17 | 1988-06-17 | Method for washing filter cloth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14823488A JPH01104499A (en) | 1988-06-17 | 1988-06-17 | Method for washing filter cloth |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13803284A Division JPS6138798A (en) | 1984-07-05 | 1984-07-05 | Method of cleaning filter cloth |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01104499A true JPH01104499A (en) | 1989-04-21 |
Family
ID=15448258
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14823488A Pending JPH01104499A (en) | 1988-06-17 | 1988-06-17 | Method for washing filter cloth |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01104499A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5841035U (en) * | 1981-09-09 | 1983-03-18 | 株式会社東芝 | motor |
-
1988
- 1988-06-17 JP JP14823488A patent/JPH01104499A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5841035U (en) * | 1981-09-09 | 1983-03-18 | 株式会社東芝 | motor |
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