JPS6229084B2 - - Google Patents
Info
- Publication number
- JPS6229084B2 JPS6229084B2 JP58190147A JP19014783A JPS6229084B2 JP S6229084 B2 JPS6229084 B2 JP S6229084B2 JP 58190147 A JP58190147 A JP 58190147A JP 19014783 A JP19014783 A JP 19014783A JP S6229084 B2 JPS6229084 B2 JP S6229084B2
- Authority
- JP
- Japan
- Prior art keywords
- filter press
- cake
- hot water
- cloth
- plate
- 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 29
- 239000004744 fabric Substances 0.000 claims description 28
- 238000005406 washing Methods 0.000 claims description 22
- 239000011550 stock solution Substances 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 13
- 238000004140 cleaning Methods 0.000 claims description 6
- 244000005700 microbiome Species 0.000 claims description 6
- 239000002244 precipitate Substances 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 description 9
- 239000000243 solution Substances 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000003203 everyday effect Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 230000001954 sterilising effect Effects 0.000 description 2
- 238000004659 sterilization and disinfection Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
Landscapes
- Filtration Of Liquid (AREA)
Description
【発明の詳細な説明】
この発明はフイルタプレスの布、板等の清
浄方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for cleaning cloth, plates, etc. of a filter press.
従来フイルタプレスの過操業は、(イ)被過原
液をフイルタプレスに供給して布で過する工
程、(ロ)布間に堆積されたケークを水洗してケー
ク中の可溶性不純物を除去する工程、(ハ)ケークを
流体圧によつて圧縮してケーク中の水分を少なく
する工程、(ニ)板を開いてケークを排出させる工
程、(ホ)布を板に取付けたまま水洗する工程、
(ヘ)板を密接して圧縮しフイルタプレスを閉じる
工程を１サイクルとして行なわれていた。しかる
に、天然の有機物質を含む被過原液をフイルタ
プレスによつて過する際に、被過原液に混入
した好気性微出物の繁殖に都合のよい条件を維持
しながら過操業を行なう場合が多い。たとえば
米ぬかのような天然食品産物等の副原料を硫酸性
液中で20〜40℃の常温で抽出した上澄抽出液に、
水酸化カルシウムなどのアルカリ性薬品を添加す
ることによつて生ずる沈殿物を水洗したのちフイ
ルタプレスで過する場合に、この沈殿物に混入
した好気性微生物（菌）がフイルタプレスの操業
条件（温度15〜37℃）において繁殖し、活発に増
殖されて、時間の経過とともに布、板等に付
着して過効率を著しく低下し、過困難となる
ことがある。従つて、実際の操業においは、ほぼ
毎日、布の交換と板表面の液通路等の完全
な清浄作業を必要とし、フイルタプレスの荷動効
率を低下させていた。特に大型フイルタプレスの
場合には、その洗浄に多大な時間を要する。 Conventionally, over-operation of the filter press is caused by (a) the step of supplying the filtered stock solution to the filter press and filtering it through a cloth, and (b) the step of washing the cake deposited between the cloths with water to remove soluble impurities in the cake. , (c) the process of compressing the cake using fluid pressure to reduce the moisture in the cake, (d) the process of opening the plate and discharging the cake, (e) the process of washing the cloth with water while it is attached to the plate,
(f) One cycle consisted of compressing the plates closely and closing the filter press. However, when filtering a stock solution containing natural organic substances through a filter press, there are cases where over-operation is performed while maintaining conditions favorable for the propagation of aerobic microextracts mixed in the stock solution. many. For example, a supernatant extract obtained by extracting auxiliary raw materials such as natural food products such as rice bran in a sulfuric acid solution at room temperature of 20 to 40℃,
When a precipitate produced by adding an alkaline chemical such as calcium hydroxide is washed with water and then passed through a filter press, aerobic microorganisms (bacteria) mixed in with the precipitate may be present under the operating conditions of the filter press (temperature 15 -37°C), and is actively multiplied, and over time, it adheres to cloth, boards, etc., significantly reducing overefficiency, and may lead to overexertion. Therefore, in actual operation, it is necessary to replace the cloth and completely clean the liquid passages on the plate surface almost every day, which reduces the loading efficiency of the filter press. Particularly in the case of large filter presses, it takes a lot of time to clean them.
この発明は、上記の問題を解決するために、上
記過作業のサイクルにおいて、(ホ)布水洗工程
の次に、温水による循環洗浄工程、および第二
布水洗工程を付加するものである。 In order to solve the above-mentioned problem, this invention adds a circulating washing process using hot water and a second cloth washing process after the cloth washing process (e) in the overwork cycle.
すなわちこの発明は、好気性微生物が繁殖し易
い沈澱物を含む被過原液をフイルタプレスによ
つて過するに際し、過工程、板を開きケー
ク落下排出工程、第一次布洗浄工程、板を密
接圧縮しての温水循環工程、板を再び開き第二
次布洗浄工程、および板を密接圧縮する工程
を１サイクルとすることを特徴とするフイルタプ
レスの清浄方法である。 That is, in this invention, when passing through a filter press a filtered stock solution containing precipitates in which aerobic microorganisms are likely to propagate, there is a passing step, a step in which the plate is opened to allow the cake to fall and discharge, a first cloth washing step, and a step in which the plate is tightly closed. This method of cleaning a filter press is characterized in that one cycle includes a compressing and hot water circulation process, a second cloth washing process of opening the plate again, and a process of closely compressing the plate.
以下にこの発明の工程、作用を図面によつて説
明する。 The steps and effects of this invention will be explained below with reference to the drawings.
多数枚の板１を開閉自在に隣接したフイルタ
プレス２の固定端板３に原液供給口４および液
排出口５が設けられ、過される原液は、原液供
給ポンプ６、原液供給バルブ７を介して原液供給
口４からフイルタプレス２内に供給され、板１
間に展張された布（図示されていない）にて
過された液は液排出口５から液バルブ８を
通つて排出される。過終了後、原液供給ポンプ
６、原液供給バルブ７を閉じて原液の供給を停止
し、ケーク水洗バルブ９を開いて板１間に堆積
せるケークに水を供給してケークに含浸された可
溶性不純物を排出バルブ１０より排出除去し、次
でケーク水洗バルブ９を閉じ加圧空気バルブ１１
を開いてケークを圧縮してケーク中の水分を排出
バルブ１０より除去する。しかる後板１を開い
て板１間のケークを落下除去させる。板１を
開いた状態で、布洗浄水タンク１２、布洗浄
水ポンプ１３、およびフイルタプレス２の前後方
向に移動し、噴水ノズル１４を有する布水洗装
置１５をもつて、板１間の布を第一次洗浄す
る。次いで板１を密接圧縮して密閉した状態
で、加熱装置１６を有する温水タンク１７より温
水供給ポンプ１８、温水供給バルブ１９、原液供
給口４を通じてフイルタプレス２内に温水を供給
し、液排出口５、温水排出バルブ２０を経て温
水を温水タンク１７に還元して循環させる。この
温水の循環によつて、布および板１の液通
路（溝）に付着されていた好気性微生物が死滅さ
れ剥離し易くなる。次いでフイルタプレス２の
布１を再度開いて、布水洗装置１５を作動して
第二次布洗浄を行ない、布および板を清浄
とし、そののちフイルタプレスの板を密接圧縮
する。 A stock solution supply port 4 and a solution discharge port 5 are provided on the fixed end plate 3 of the filter press 2 adjacent to the multiple plates 1 so as to be openable and closable, and the stock solution to be filtered is passed through the stock solution supply pump 6 and the stock solution supply valve 7. is supplied into the filter press 2 from the stock solution supply port 4, and the plate 1
The liquid passed through a cloth (not shown) spread between the two is discharged from the liquid outlet 5 through the liquid valve 8. After completion of the heating, the stock solution supply pump 6 and stock solution supply valve 7 are closed to stop supplying the stock solution, and the cake washing valve 9 is opened to supply water to the cake deposited between the plates 1 to remove soluble impurities impregnated into the cake. is discharged and removed from the discharge valve 10, and then the cake washing valve 9 is closed and the pressurized air valve 11
is opened to compress the cake and remove moisture in the cake through the discharge valve 10. After that, the plates 1 are opened and the cake between the plates 1 is allowed to fall and be removed. With the plates 1 open, the fabric washing water tank 12, fabric washing water pump 13, and filter press 2 are moved in the front-rear direction, and the fabric washing device 15 having the fountain nozzle 14 is used to clean the fabric between the plates 1. First wash. Next, with the plate 1 tightly compressed and sealed, hot water is supplied into the filter press 2 from a hot water tank 17 having a heating device 16 through a hot water supply pump 18, a hot water supply valve 19, and a stock solution supply port 4, and then a liquid discharge port. 5. Return the hot water to the hot water tank 17 via the hot water discharge valve 20 and circulate it. This circulation of hot water kills aerobic microorganisms attached to the liquid passages (grooves) of the cloth and plate 1, making them easier to peel off. The cloth 1 of the filter press 2 is then opened again and the cloth washing device 15 is activated to perform a second cloth washing to clean the cloth and the plate, after which the plate of the filter press is closely compressed.
この発明における温水循環工程における温水温
度は60〜95℃が好ましく、60℃未満では好気性微
生物の殺菌が不十分であり、95℃を越えると
布、ケーク圧搾膜等の寿命を短くする。 The hot water temperature in the hot water circulation step in this invention is preferably 60 to 95°C; if it is less than 60°C, sterilization of aerobic microorganisms will be insufficient, and if it exceeds 95°C, the life of cloth, cake press membranes, etc. will be shortened.
温水循環流量は100〜500／m2・時が好まし
い。100／m2・時未満であると温水循環清浄効
果が低下し、また500／m2・時を越えると、流
動抵抗が増加し、密接板のすきまからの漏れが
増加し、温水のロスが多くなる。 The hot water circulation flow rate is preferably 100 to 500/ m2 /hour. If it is less than 100/m 2・hour, the hot water circulation cleaning effect will decrease, and if it exceeds 500/m 2・hour, the flow resistance will increase, leakage from the gap between the close plates will increase, and hot water will be lost. There will be more.
温水循環時間は40〜80分間が好ましく、40分未
満では殺菌が不十分であり、また80分間を越える
と１サイクル時間が長くなつて過荷荷動効率が
低下する。 The hot water circulation time is preferably 40 to 80 minutes; if it is less than 40 minutes, sterilization will be insufficient, and if it exceeds 80 minutes, one cycle time will become longer and the overloading efficiency will decrease.
温水循環の圧力は0.1〜0.2Kg／cm2以上（フイル
タプレスの液排出口の圧力）である。 The pressure of hot water circulation is 0.1 to 0.2 Kg/cm 2 or more (pressure at the liquid outlet of the filter press).
また第一次、第二次の布洗浄工程の条件は従
来と変らず、常温水を使用し、使用量は100／
m2・サイクル、洗浄噴射圧は40Kg／cm2前後であ
り、１枚布の片面洗浄時間は30〜60秒間であ
る。 In addition, the conditions for the first and second cloth washing processes are the same as before, using room temperature water, and the amount used is 100%
m2 cycle, the cleaning jet pressure is around 40 kg/ cm2 , and the cleaning time for one side of one cloth is 30 to 60 seconds.
上記のようにこの発明は、従来のフイルタプレ
スの過操業において、ケークの落下排出工程、
第一次布洗浄工程に次いで、板を密接圧縮し
てこの温水循環工程を行なうものであるから、
過工程において繁殖した好気性微生物が死滅され
剥離し易くなり、これらを第二次布洗浄工程に
よつて洗い落すものであるから、従来のように
布の交換、板表面や液通路等の清浄作業を毎
日行なう必要がなくなり、フイルタプレスの荷動
効率を向上させることができる。 As described above, the present invention can be applied to the cake falling and discharging process during over-operation of the conventional filter press.
Following the first cloth washing process, the board is closely compressed and this hot water circulation process is performed.
The aerobic microorganisms that have grown in the secondary process are killed and become easy to peel off, and these are washed away in the secondary cloth washing process. It is no longer necessary to carry out the work every day, and the load handling efficiency of the filter press can be improved.
図面はこの発明の工程を説明するための配置図
である。
１：板、２：フイルタプレス、４：原液供給
口、５：液排出口、６：原液供給ポンプ、７：
原液供給バルブ、８：液バルブ、９：ケーク水
洗バルブ、１０：排出バルブ、１１：加圧空気バ
ルブ、１２：布洗浄水タンク、１５：布水洗
装置、１７：温水タンク、１９：温水供給バル
ブ、２０：温水排出バルブ。
The drawings are layout diagrams for explaining the steps of the invention. 1: Plate, 2: Filter press, 4: Stock solution supply port, 5: Liquid discharge port, 6: Stock solution supply pump, 7:
Raw solution supply valve, 8: Liquid valve, 9: Cake washing valve, 10: Discharge valve, 11: Pressurized air valve, 12: Fabric washing water tank, 15: Fabric washing device, 17: Hot water tank, 19: Hot water supply valve , 20: Hot water discharge valve.
Claims (1)
過原液をフイルタプレスによつて過するに際
し、過工程、板を開きケーク落下排出工程、
第一次布洗浄工程、板を密接圧縮しての温水
循環工程、板を再び開き第二次布洗浄工程、
および板を密接圧縮する工程を１サイクルとす
ることを特徴とするフイルタプレスの清浄方法。1. When passing the filtered stock solution containing precipitates in which aerobic microorganisms can easily propagate through a filter press, there is a filtering process, a plate is opened and a cake is discharged, and a cake is discharged.
The first cloth washing process, the warm water circulation process by tightly compressing the board, the second cloth washing process by opening the board again,
and a method for cleaning a filter press, characterized in that the step of closely compressing the plate is one cycle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58190147A JPS6082112A (en) | 1983-10-11 | 1983-10-11 | Cleaning method of filter press |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58190147A JPS6082112A (en) | 1983-10-11 | 1983-10-11 | Cleaning method of filter press |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6082112A JPS6082112A (en) | 1985-05-10 |
| JPS6229084B2 true JPS6229084B2 (en) | 1987-06-24 |
Family
ID=16253187
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58190147A Granted JPS6082112A (en) | 1983-10-11 | 1983-10-11 | Cleaning method of filter press |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6082112A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7283030B2 (en) * | 2020-07-31 | 2023-05-30 | 株式会社石垣 | Dehydrated cake washing method in filter press |
-
1983
- 1983-10-11 JP JP58190147A patent/JPS6082112A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6082112A (en) | 1985-05-10 |
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