JPH0720557B2 - Decanter and its cleaning method - Google Patents
Decanter and its cleaning methodInfo
- Publication number
- JPH0720557B2 JPH0720557B2 JP1103493A JP10349389A JPH0720557B2 JP H0720557 B2 JPH0720557 B2 JP H0720557B2 JP 1103493 A JP1103493 A JP 1103493A JP 10349389 A JP10349389 A JP 10349389A JP H0720557 B2 JPH0720557 B2 JP H0720557B2
- Authority
- JP
- Japan
- Prior art keywords
- cleaning
- decanter
- cleaning liquid
- supply pipe
- stock solution
- 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 - Lifetime
Links
- 238000004140 cleaning Methods 0.000 title claims description 59
- 238000000034 method Methods 0.000 title claims description 10
- 239000007788 liquid Substances 0.000 claims description 48
- 239000011550 stock solution Substances 0.000 claims description 23
- 239000000243 solution Substances 0.000 claims description 17
- 238000003780 insertion Methods 0.000 claims description 9
- 230000037431 insertion Effects 0.000 claims description 9
- 239000007787 solid Substances 0.000 claims description 7
- 238000000605 extraction Methods 0.000 claims description 4
- 238000011109 contamination Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011343 solid material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000002627 tracheal intubation Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Landscapes
- Centrifugal Separators (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明はデカンタ及びその洗浄方法に関する。TECHNICAL FIELD The present invention relates to a decanter and a cleaning method thereof.
（従来技術） デカンタは高濃度の固形分を含むスラリーを処理して固
液分離するのに適するため、化学工業、食品工業、下廃
水処理等多くの分野で使用されている。しかしながら従
来のデカンタでは次の様な問題があるため食品工業、医
薬品工業等の様に不純物による汚染をきらう分野ではか
なりその使用が制限されている。第１図のデカンタの縦
断面図に基づき従来のデカンタの洗浄方法を説明する。
通常の原液処理の運転を終了後、原液供給口１より清水
等の洗浄液を導入しながらデカンタを回転するが、洗浄
液は遠心力の作用を受けて固形物排出口２及び分離液排
出口３より機外に排出されるため回転体内で外径側に移
動し図示の二点鎖線の液面Ｌが形成される。このためス
クリュウコンベヤ軸の外面をコンベヤの中央部には洗浄
液が十分に接触することができずこの部分の洗浄が不充
分であり、前工程の原液が残留して次工程の製品に混入
し汚染の原因になっている。(Prior Art) Decanters are suitable for treating a slurry containing a high concentration of solids for solid-liquid separation, and are therefore used in many fields such as chemical industry, food industry, and wastewater treatment. However, since the conventional decanter has the following problems, its use is considerably limited in fields such as food industry, pharmaceutical industry, etc. where contamination by impurities is tolerated. A conventional decanter cleaning method will be described with reference to the longitudinal sectional view of the decanter shown in FIG.
After the operation of the normal stock solution treatment is completed, the decanter is rotated while introducing the cleaning solution such as fresh water from the stock solution supply port 1, but the cleaning solution is subjected to the action of centrifugal force and is discharged from the solid matter discharge port 2 and the separated solution discharge port 3. Since the liquid is discharged to the outside of the machine, it moves to the outer diameter side in the rotating body and a liquid surface L indicated by a chain double-dashed line is formed. As a result, the outer surface of the screw conveyor shaft cannot contact the central part of the conveyor sufficiently with the cleaning liquid, and cleaning of this part is insufficient, and the undiluted liquid from the previous process remains and mixes into the product of the next process, resulting in contamination. Is causing
（発明が解決しようとする課題） 本発明は以上の従来技術の問題点に鑑みてなされたもの
であって、従来のデカンタの構造を改良して非常に簡単
な部材を付設するのみでデカンタ内を完全に洗浄できる
方法を提供することを課題とするものである。(Problems to be Solved by the Invention) The present invention has been made in view of the above-mentioned problems of the prior art, and it is possible to improve the structure of the conventional decanter and attach a very simple member to the inside of the decanter. It is an object of the present invention to provide a method capable of completely cleaning the oil.
（課題を解決するための手段） 本発明の要旨とするところは第１には回転ボウル（４）
と同軸的に若干の差速をもって回転するスクリュウコン
ベヤ（５）と回転ボウルの端板（８）の挿管孔（９）か
ら挿着される原液供給管（６）とからなるデカンタに於
いて、回転ボウル（４）の端板（８）の最外径部にドレ
ン孔（10）を穿孔し、挿管孔（９）と原液供給管（６）
の間に洗浄液流路（13）を形成し、原液供給管（６）の
端部には洗浄液流路（13）と連通する洗浄液抜出し室
（11）を付設したことを特徴とするデカンタであり、第
２には固形物排出口（２）と分離液排出口（３）をプラ
ギングし、回転ボウル（４）及びスクリュウコンベヤ
（５）を回転しながら、原液供給管（６）から洗浄液を
供給し洗浄液抜出し室（11）から洗浄液を抜出すことを
特徴とするデカンタの洗浄方法である。(Means for Solving the Problems) The first point of the present invention is to provide a rotating bowl (4).
In a decanter comprising a screw conveyor (5) that rotates coaxially with a slight speed difference and a stock solution supply pipe (6) inserted through an insertion hole (9) of an end plate (8) of a rotating bowl, A drain hole (10) is bored in the outermost diameter portion of the end plate (8) of the rotating bowl (4), and an insertion hole (9) and a stock solution supply pipe (6) are provided.
A decanter characterized in that a cleaning liquid flow path (13) is formed between the cleaning liquid flow path (13) and a cleaning liquid flow-out chamber (11) communicating with the cleaning liquid flow path (13) is provided at the end of the stock solution supply pipe (6). Secondly, plug the solid matter discharge port (2) and the separated liquid discharge port (3), and supply the cleaning liquid from the undiluted solution supply pipe (6) while rotating the rotating bowl (4) and the screw conveyor (5). A decanter cleaning method is characterized in that the cleaning liquid is discharged from the cleaning liquid discharge chamber (11).
すなわち本発明者は回転ボウル（４）の端板（８）の挿
管孔（９）と原液供給管（６）の間の間隙に着目し、洗
浄液が十分に流通できる様挿管孔を大きくするか或いは
原液供給管（６）の管径を小さくして洗浄液流路（13）
を形成している。そしてこの形成された洗浄液流路（1
3）と原液供給管（６）の端部の間には洗浄液流路（1
3）と連通する洗浄液抜出し室（11）を付設している。
以上の構成のデカンタにおいて、固形物排出口（２）及
び分離液排出口（３）をそれぞれプラグ（２′,3′）で
閉塞して緩速回転しながら原液供給管（６）から洗浄液
を供給すれば、洗浄液は回転ボウル内に充液しやがては
洗浄液流路迄達っして洗浄液抜出し室（11）から流出す
る。この状態でデカンタを回転すれば洗浄液は渦巻状態
でデカンタ内の全ての部分によく接触するので効率よく
洗浄される。洗浄が終了すれば回転ボウルの端板（８）
の最外径部に穿孔されるドレン孔（10）のプラグ（1
0′）を外せば回転ボウル内の洗浄液を抜き出すことが
できる。That is, the present inventor pays attention to the gap between the insertion hole (9) of the end plate (8) of the rotating bowl (4) and the stock solution supply pipe (6), and enlarges the insertion hole so that the cleaning liquid can sufficiently flow. Alternatively, the diameter of the undiluted solution supply pipe (6) may be reduced to make the cleaning solution flow path (13)
Is formed. Then, the cleaning liquid flow path (1
3) and the end of the stock solution supply pipe (6) between the cleaning solution flow path (1
A washing liquid extraction chamber (11) communicating with 3) is attached.
In the decanter having the above structure, the solid material discharge port (2) and the separated liquid discharge port (3) are closed by the plugs (2 ', 3'), respectively, and the cleaning liquid is supplied from the stock solution supply pipe (6) while slowly rotating. When supplied, the cleaning liquid fills the rotating bowl and eventually reaches the cleaning liquid flow path and flows out of the cleaning liquid discharge chamber (11). If the decanter is rotated in this state, the cleaning liquid is in contact with all parts in the decanter in a swirling state, so that the cleaning liquid is efficiently cleaned. End plate (8) of rotating bowl when cleaning is completed
The drain hole (10) plug (1
By removing 0 '), the cleaning liquid in the rotating bowl can be extracted.
（実 施 例） 以下実施例に基づき本発明の内容をさらに説明する。第
１図は本発明を実施したデカンタの縦断面図である。図
において２′は固形物排出口２のプラグ、３′は分離液
排出口３のプラグ、４は回転ボウル、５は回転ボウルと
若干の差速をもって回転するスクリュウコンベヤであ
る。６は原液をスクリュウ軸５の中央部に設けられる複
数個の分配口７迄導入する原液供給管であり、回転ボウ
ルの端板８に設けられる挿管孔９から挿着される。10、
10′は端板８の最外径部に穿孔されるドレン孔及びその
プラグである。13は挿管孔９と原液供給管６の間に形成
される洗浄液流路であり、11は原液供給管６の端部に付
設され洗浄液流路13と連通する洗浄液抜出し室であり、
12は洗浄液抜出し口である。(Examples) The contents of the present invention will be further described based on examples. FIG. 1 is a vertical sectional view of a decanter embodying the present invention. In the figure, 2'is a plug for the solid material discharge port 2, 3'is a plug for the separated liquid discharge port, 4 is a rotating bowl, and 5 is a screw conveyor which rotates at a slightly different speed from the rotating bowl. Reference numeral 6 is a stock solution supply pipe for introducing the stock solution to a plurality of distribution ports 7 provided in the central portion of the screw shaft 5, and is inserted and inserted through an insertion hole 9 provided in an end plate 8 of the rotating bowl. Ten,
Reference numeral 10 'denotes a drain hole and a plug formed in the outermost diameter portion of the end plate 8. Reference numeral 13 is a cleaning liquid flow path formed between the insertion hole 9 and the stock solution supply pipe 6, and 11 is a cleaning liquid extraction chamber attached to the end of the stock solution supply pipe 6 and communicating with the cleaning liquid flow path 13.
Reference numeral 12 is a cleaning liquid outlet.
以上の構成からなるデカンタの洗浄方法は次の手順で行
なわれる。The decanter cleaning method having the above configuration is performed in the following procedure.
（イ）通常の原液処理が終了すればドレンプラグ10′を
外し回転ボウル４内部の残液を全て排出する。(A) When the normal stock solution treatment is completed, the drain plug 10 'is removed and all the residual solution in the rotary bowl 4 is discharged.
（ロ）固形物排出口のプラグ２′、分離液排出口のプラ
グ３′及びドレンプラグ10′を螺着し、それぞれ閉塞す
る。(B) The plug 2'of the solid matter discharge port, the plug 3'of the separated liquid discharge port, and the drain plug 10 'are screwed on and closed.
（ハ）回転ボウル４及びスクリュウ軸５を低速回転しな
がら原液供給口１から洗浄液を供給する。洗浄液は原液
供給管６から分配口７を経由して回転ボウル４内に入る
が固形物排出口２及び分離液排出口３が閉塞されている
ので洗浄液は回転ボウル４内に充液しやがては挿着孔９
と原液供給管６の間の洗浄液流路13から溢流し、洗浄液
抜出し室11に流出しそして洗浄液抜出し口12から機外へ
排出される。以上の様に機内に導入された洗浄液は回転
ボウル及びスクリュウ軸の回転によりデカンタ内を渦巻
状に満遍なく流れるので洗浄効果は非常に高い、なおデ
カンタとポンプ等からなる循環装置14に管路15により循
環ループを形成し、洗浄液を循環しながら行えば、洗浄
は一層効果的であるとともに洗浄液の節減も可能であ
る。(C) While rotating the rotary bowl 4 and the screw shaft 5 at a low speed, the cleaning liquid is supplied from the stock solution supply port 1. The cleaning liquid enters the rotary bowl 4 from the undiluted solution supply pipe 6 through the distribution port 7, but since the solid matter discharge port 2 and the separated liquid discharge port 3 are closed, the cleaning liquid is filled in the rotary bowl 4 before long. Insertion hole 9
And overflows from the cleaning liquid flow path 13 between the stock solution supply pipe 6 and the stock solution supply pipe 6, flows into the cleaning liquid extraction chamber 11, and is discharged from the cleaning liquid outlet 12 to the outside of the machine. As described above, the cleaning liquid introduced into the machine uniformly flows in the decanter spirally by the rotation of the rotating bowl and the screw shaft, so the cleaning effect is very high, and the circulation device 14 consisting of the decanter and the pump etc. If a circulation loop is formed and the cleaning solution is circulated, the cleaning is more effective and the cleaning solution can be saved.
（ニ）洗浄が終了すれば洗浄液の供給を停止しそしてデ
カンタの回転も停止する。次いでドレンプラグ10′を外
し機内の洗浄液を抜出す。洗浄後長時間運転しない場合
には、原液供給口１より殺菌液を機内に充液し封液保管
すれば一層安全である。(D) When the cleaning is completed, the supply of the cleaning liquid is stopped and the rotation of the decanter is stopped. Then, the drain plug 10 'is removed and the cleaning liquid in the machine is drained. When not operating for a long time after cleaning, it is safer to fill the inside of the machine with a sterilizing solution from the stock solution supply port 1 and store it in a sealed solution.
（発明の効果） 以上説明した構成と作用を有する本発明によれば、デカ
ンタ内の全ての部分を効率よく洗浄できるのでデカンタ
を食品工業、医薬品工業等の分野にも広く適用できるの
で、本発明は産業上極めて有益である。(Effects of the Invention) According to the present invention having the configuration and operation described above, since all the parts in the decanter can be efficiently washed, the decanter can be widely applied to fields such as the food industry and the pharmaceutical industry. Is extremely beneficial to the industry.
第１図は本発明を実施したデカンタの縦断面図である。 1;原液供給口、2;固形物排出口、3;分離液排出口、4;回
転ボウル、5;スクリュウコンベヤ、6;原液供給管、7;分
配口、8;端板、9;挿管孔、10;ドレン孔、11;洗浄液抜出
し室、12;洗浄液抜出し口、13;洗浄液流路、14;循環装
置、15;管路。FIG. 1 is a vertical sectional view of a decanter embodying the present invention. 1; stock solution supply port, 2; solid matter discharge port, 3; separated liquid discharge port, 4; rotating bowl, 5; screw conveyor, 6; stock solution supply pipe, 7; distribution port, 8; end plate, 9; intubation hole , 10; drain hole, 11; cleaning liquid outlet chamber, 12; cleaning liquid outlet, 13; cleaning liquid passage, 14; circulation device, 15; pipe.
Claims (2)
もって回転するスクリュウコンベヤ（５）と回転ボウル
の端板（８）の挿管孔（９）から挿着される原液供給管
（６）とからなるデカンタに於いて、回転ボウル（４）
の端板（８）の最外径部にドレン孔（10）を穿孔し、挿
管孔（９）と原液供給管（６）の間に洗浄液流路（13）
を形成し、原液供給管（６）の端部には洗浄液流路（1
3）と連通する洗浄液抜出し室（11）を付設したことを
特徴とするデカンタ。1. A screw conveyor (5) that rotates coaxially with the rotating bowl (4) at a slight speed difference, and a stock solution supply pipe (9) inserted through an insertion hole (9) in an end plate (8) of the rotating bowl. In the decanter consisting of 6) and, the rotating bowl (4)
A drain hole (10) is bored in the outermost diameter part of the end plate (8) of the cleaning solution, and a cleaning liquid flow path (13) is provided between the insertion hole (9) and the stock solution supply pipe (6).
Forming a cleaning liquid flow path (1) at the end of the stock solution supply pipe (6).
A decanter characterized by being provided with a cleaning liquid extraction chamber (11) communicating with 3).
をプラギングし、回転ボウル（４）及びスクリュウコン
ベヤ（５）を回転しながら、原液供給管（６）から洗浄
液を供給し洗浄液抜出し室（11）から洗浄液を抜出すこ
とを特徴とする請求項第１項記載のデカンタの洗浄方
法。2. The separated liquid discharge port (3) of the solid matter discharge port (2)
The cleaning solution is supplied from the stock solution supply pipe (6) and the cleaning solution is withdrawn from the cleaning solution withdrawing chamber (11) while the rotating bowl (4) and the screw conveyor (5) are rotated by plugging. The method for cleaning a decanter according to item 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1103493A JPH0720557B2 (en) | 1989-04-25 | 1989-04-25 | Decanter and its cleaning method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1103493A JPH0720557B2 (en) | 1989-04-25 | 1989-04-25 | Decanter and its cleaning method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02284656A JPH02284656A (en) | 1990-11-22 |
| JPH0720557B2 true JPH0720557B2 (en) | 1995-03-08 |
Family
ID=14355523
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1103493A Expired - Lifetime JPH0720557B2 (en) | 1989-04-25 | 1989-04-25 | Decanter and its cleaning method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0720557B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111054528B (en) * | 2019-12-12 | 2024-02-02 | 武汉德泽环保科技有限公司 | Piston pushing centrifugal machine and feeding method thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5882864U (en) * | 1981-11-27 | 1983-06-04 | 三菱重工業株式会社 | centrifugal dehydrator |
| JPS6171856A (en) * | 1984-09-17 | 1986-04-12 | Jgc Corp | Method for washing centrifugal separator |
-
1989
- 1989-04-25 JP JP1103493A patent/JPH0720557B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02284656A (en) | 1990-11-22 |
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