JPS6241048B2 - - Google Patents
Info
- Publication number
- JPS6241048B2 JPS6241048B2 JP55057572A JP5757280A JPS6241048B2 JP S6241048 B2 JPS6241048 B2 JP S6241048B2 JP 55057572 A JP55057572 A JP 55057572A JP 5757280 A JP5757280 A JP 5757280A JP S6241048 B2 JPS6241048 B2 JP S6241048B2
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- stock solution
- pressurized air
- automatic
- pressure tank
- 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
- 239000011550 stock solution Substances 0.000 claims description 50
- 238000000034 method Methods 0.000 claims description 12
- 238000004891 communication Methods 0.000 claims description 9
- 239000000706 filtrate Substances 0.000 claims description 3
- 238000011085 pressure filtration Methods 0.000 claims 2
- 238000007599 discharging Methods 0.000 claims 1
- 239000007788 liquid Substances 0.000 description 16
- 238000001914 filtration Methods 0.000 description 5
- 230000003584 silencer Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Description
【発明の詳細な説明】
本発明は空気圧縮機の吐出空気圧を用いて、加
圧濾過機に原液を連続して供給する方法に関する
ものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for continuously supplying a stock solution to a pressure filter using the discharge air pressure of an air compressor.
加圧濾過機に原液を圧入する方法としては、ポ
ンプによる加圧なども用いられるが、圧力が高い
ため高揚程ポンプを必要として、設備費もかかり
メンテナンス上も手数がかかる。よつてベビコン
等の簡単な空気圧縮機等の吐出圧力を用いて原液
を加圧する方法も多く使われている。 Pressurization using a pump is also used as a method of pressurizing the stock solution into the pressure filter, but the high pressure requires a high-pressure pump, which increases equipment costs and requires maintenance. Therefore, a method of pressurizing the stock solution using the discharge pressure of a simple air compressor such as Bebicon is also often used.
従来圧縮空気を用いた加圧方法は第１図に示す
ように、原液供給ポンプ１により、原液を逆止弁
１ａを通過させて加圧濾過機２に供給する。濾過
初期においては、原液の殆んどが加圧濾過機２に
供給されるが、加圧濾過機の濾室にケーキが蓄積
されて来るに従つて原液ポンプ１によつて圧送さ
れている原液の一部が、逆止弁１ａと加圧濾過機
２の間に設けられた圧力タンク３に導入されて来
る。一定時間後、圧力タンク３の上部に設けられ
た空気放出管４の自動残留加圧空気放出弁４ａを
開くと、圧力タンク３内に封入されていた残留加
圧空気は放出圧力自動調節弁４ｂ、消音器４ｃを
通つて大気中に放出される。同時に原液供給ポン
プ１から送られて来る原液は、圧力タンク３の下
部より供給され、圧力タンク内原液位検出器３ａ
の作動により、液位上限で原液ポンプ１は停止す
る。同時に自動残留加圧空気放出弁４ａが閉じ
る。次に空気導入管６に設けられた自動加圧空気
供給弁６ａが開くと、空気圧縮機５からの吐出空
気は加圧空気用逆止弁６ｂを通り導入管６により
圧力タンク３内に導入される。そしてこの中に蓄
えられた原液を加圧し、原液は、圧力タンク３の
下部より加圧濾過機２に供給される。供給過程中
に圧力タンク３内の圧力が規定の圧力になるとタ
ンク内圧力検出器３ｂの作動によつて自動加圧空
気供給弁６ａが閉じ、規定の圧力以下になると、
自動加圧空気供給弁６ａが開く。以上の動作が繰
り返されて圧力タンク３内を一定圧に保ち、原液
は加圧濾過機２に圧送される。圧力タンク３内の
液位が下限となると、自動加圧空気供給弁６ａが
閉じ、その後自動残留加圧放出弁４ａが開き、圧
力タンク３内の残留加圧空気が前記の経路で放出
される。すると、圧力タンク３は常圧となつて濾
過原液が導入され、圧力タンク３の上限まで原液
が供給される。次いで自動残留加圧空気放出弁４
ａが閉じ自動加圧空気供給弁６ａが開いて圧縮空
気が圧力タンク３に入り、原液を加圧濾過機２に
圧送する。以上の如く原液が圧力タンク３内に供
給されている間は、加圧濾過機２に原液の供給が
なく、加圧濾過機２の濾室は大気圧力と同じ圧力
となり、生成途中にあるケーキが濾布からはがれ
たり、崩れたりすることもある。ケーキが崩れた
濾室に再び原液が供給されると、供給圧力が高い
ため濾室から濾液が噴出することもあり、これを
防止する方法の出現が望まれていた。 In the conventional pressurization method using compressed air, as shown in FIG. 1, a stock solution supply pump 1 supplies the stock solution to a pressure filter 2 through a check valve 1a. At the initial stage of filtration, most of the stock solution is supplied to the pressure filter 2, but as cake accumulates in the filter chamber of the pressure filter, the stock solution being pumped by the stock pump 1 decreases. A part of the water is introduced into a pressure tank 3 provided between the check valve 1a and the pressure filter 2. After a certain period of time, when the automatic residual pressurized air release valve 4a of the air release pipe 4 provided at the top of the pressure tank 3 is opened, the residual pressurized air sealed in the pressure tank 3 is released through the release pressure automatic control valve 4b. , and are emitted into the atmosphere through the silencer 4c. At the same time, the stock solution sent from the stock solution supply pump 1 is supplied from the lower part of the pressure tank 3, and the stock solution level detector 3a in the pressure tank
Due to this operation, the stock solution pump 1 stops at the upper limit of the liquid level. At the same time, the automatic residual pressurized air release valve 4a closes. Next, when the automatic pressurized air supply valve 6a provided in the air introduction pipe 6 opens, the air discharged from the air compressor 5 passes through the pressurized air check valve 6b and is introduced into the pressure tank 3 through the introduction pipe 6. be done. Then, the stock solution stored therein is pressurized, and the stock solution is supplied to the pressure filter 2 from the lower part of the pressure tank 3. During the supply process, when the pressure inside the pressure tank 3 reaches a specified pressure, the automatic pressurized air supply valve 6a closes due to the operation of the tank pressure detector 3b, and when the pressure falls below the specified pressure,
Automatic pressurized air supply valve 6a opens. The above operations are repeated to maintain a constant pressure in the pressure tank 3, and the stock solution is pumped to the pressure filter 2. When the liquid level in the pressure tank 3 reaches the lower limit, the automatic pressurized air supply valve 6a closes, and then the automatic residual pressure release valve 4a opens, and the residual pressurized air in the pressure tank 3 is released through the aforementioned path. . Then, the pressure tank 3 becomes normal pressure and the filtered stock solution is introduced, and the stock solution is supplied up to the upper limit of the pressure tank 3. Then automatic residual pressurized air release valve 4
a is closed, the automatic pressurized air supply valve 6a is opened, compressed air enters the pressure tank 3, and the stock solution is fed under pressure to the pressure filter 2. While the stock solution is being supplied into the pressure tank 3 as described above, there is no stock solution supplied to the pressure filter 2, and the pressure in the filter chamber of the pressure filter 2 is the same as atmospheric pressure, and the cake that is being formed is may peel off or crumble from the filter cloth. When the raw solution is supplied again to the filter chamber where the cake has collapsed, the filtrate may spout from the filter chamber due to the high supply pressure, and there has been a desire for a method to prevent this.
本発明は上記の事情を考慮してなされたもの
で、２基の圧力タンクを用いて、うち１基は常に
加圧状態を維持して、加圧濾過機への原液供給圧
力を一定の圧力に保ち、濾室内のケーキの崩れの
発生を皆無とする方法を提供するものである。 The present invention was made in consideration of the above circumstances, and uses two pressure tanks, one of which always maintains a pressurized state to keep the stock solution supply pressure to the pressure filter at a constant pressure. The present invention provides a method for maintaining the temperature of the filter and completely eliminating the occurrence of cake collapse in the filter chamber.
以下本考案を図面を参照して詳細に説明する。 The present invention will be described in detail below with reference to the drawings.
第２図は本考案の一実施例を示すもので、図中
符号１１で示すものは原液供給ポンプ（以下ポン
プ）である。ポンプ１１の吐出口は、原液逆止弁
１２ａおよび自動供給弁１２ｂが取りつけられた
原液圧送管１２によつて加圧濾過機１３と連結さ
れている。原液圧送管１２の原液逆止弁１２ａと
自動供給弁１２ｂの間、および自動供給弁１２ｂ
と加圧濾過機１３の間の原液供給管１２には枝管
１２ｃ，１２ｄが設けられ、それぞれ第１圧力タ
ンク１４、第２圧力タンク１５の底部に連結され
ている。第１圧力タンク１４には、液位の上限下
限を検出する第１圧力タンク内液位検出器１４ａ
が設けられ、頂部には自動残留加圧空気放出弁１
６ａ、放出圧力自動調節弁１６ｂおよび消音機１
６ｃを有する空気放出配管１６が設けられてい
る。又第２圧力タンク１５には液位下限を検出す
る第２圧力タンク内液位検出器１５ａが設けら
れ、頂部には圧力タンク内圧力検出器１５ｂが設
けられている。またこの頂部は圧力空気導入管１
７によつて空気圧縮機１８の吐出口と連結されて
おり、この圧力空気導入管１７には自動加圧空気
供給弁１７ａおよび加圧用空気逆止弁１７ｂがと
りつけられている。さらに第１圧力タンク１４の
頂部と第２圧力タンク１５の頂部は、加圧空気連
絡弁１９ａを有する加圧空気連絡管１９によつて
連結されている。 FIG. 2 shows an embodiment of the present invention, and the reference numeral 11 in the figure is a stock solution supply pump (hereinafter referred to as pump). The discharge port of the pump 11 is connected to a pressurized filter 13 by a stock solution pressure feed pipe 12 equipped with a stock solution check valve 12a and an automatic supply valve 12b. Between the stock solution check valve 12a and the automatic supply valve 12b of the stock solution pressure feed pipe 12, and the automatic supply valve 12b
Branch pipes 12c and 12d are provided in the stock solution supply pipe 12 between the pressurized filter and the pressure filter 13, and are connected to the bottoms of the first pressure tank 14 and the second pressure tank 15, respectively. The first pressure tank 14 includes a first pressure tank liquid level detector 14a that detects the upper and lower limits of the liquid level.
is equipped with an automatic residual pressurized air release valve 1 at the top.
6a, discharge pressure automatic control valve 16b and silencer 1
An air discharge pipe 16 having 6c is provided. Further, the second pressure tank 15 is provided with a second pressure tank liquid level detector 15a for detecting the lower limit of the liquid level, and a pressure tank internal pressure detector 15b is provided at the top. Also, the top of this is the pressure air introduction pipe 1.
7 is connected to the discharge port of the air compressor 18, and this pressure air introduction pipe 17 is equipped with an automatic pressurized air supply valve 17a and a pressurized air check valve 17b. Further, the top of the first pressure tank 14 and the top of the second pressure tank 15 are connected by a pressurized air communication pipe 19 having a pressurized air communication valve 19a.
次にこのように構成された本発明に係る加圧原
液供給方法を説明する。 Next, the pressurized stock solution supply method according to the present invention configured as described above will be explained.
原液は、ポンプ１１により、原液供給管１２の
原液逆止弁１２ａ、自動供給弁１２ｂを通つて加
圧濾過機１３に供給される。濾過初期において
は、原液の殆どが加圧濾過機１３に供給される
が、加圧濾過機１３の濾室内にケーキが蓄積され
て来るに従つて、ポンプ１１から送られて来る原
液の一部が、第１、第２圧力タンク１４，１５の
内部に枝管１２ｃ，１２ｄを通じて供給されてく
る。一定時間後に自動供給弁１２ｂが閉、自動加
圧空気供給弁１７ａが開、自動残留加圧空気放出
弁１６ａが開となる動作が同時に行なわれる（但
し、加圧空気連絡弁１９ａは閉のまま）。その時
第１圧力タンク１４内に封入されていた残留加圧
空気は、空気放出管１６の自動残留加圧空気放出
弁１６ａ、放出圧力自動調節弁１６ｂ、消音器１
６ｃを通つて大気に放出される。その後は第１圧
力タンク１４の内部は常圧となるので、ポンプ１
１より送られる原液は枝管１２ｃより導入され
る。液位が上限に達すると第１圧力タンク内液位
検出器１４ａによりポンプ１１が停止し、同時に
自動残留加圧空気放出弁１６ａが閉じ、その後加
圧空気連絡弁１９ａが開き第２圧力タンク１５の
内圧を変動させないように、加圧空気連絡弁１９
ａを調整して第１圧力タンク１４内に加圧空気を
導入して、両圧力タンク１４，１５を同圧力とす
る。次に自動供給弁１２ｂを開くと、第１圧力タ
ンク１４の液位は第２圧力タンク１５の液位より
高いので、液は第２圧力タンクに移行し、両圧力
タンク１４，１５の液位は同じとなる。原液は両
圧力タンク１４，１５から、空気圧縮機１８の加
圧空気に押され、加圧濾過機１３に圧送される。
この際、両圧力タンク１４，１５の圧力が規定の
圧力以上になると、圧力タンク内圧力検出器１５
ｂの指示により自動加圧空気供給弁１７ａが閉
じ、また規定の圧力以下になると圧力タンク内圧
力検出器１５ｂの指示により自動加圧空気供給弁
１７ａが開いて両圧力タンク１４，１５を一定圧
力に保つ。２基の圧力タンク１４，１５の液位が
下限となると、自動供給弁１２ｂおよび加圧空気
連絡弁１９ａが同時に閉となり、しかる後自動残
留加圧空気放出弁１６ａが開く。すると第１圧力
タンク１４内の残留加圧空気は大気中に放出され
常圧となり、ポンプ１１より原液が第１圧力タン
ク１４の上限液位まで供給される。この間第２圧
力タンク１５は引続いて加圧状態を維持し原液を
加圧濾過機１３に圧送している。以下は前述と同
様の工程を繰返して、原液が第１圧力タンク１４
に間歇的に供給されるとともに、空気圧縮機１８
の吐出空気圧力により加圧濾過機１３に連続して
原液を圧送供給するものである。 The stock solution is supplied to the pressure filter 13 by the pump 11 through the stock solution check valve 12a of the stock solution supply pipe 12 and the automatic supply valve 12b. At the initial stage of filtration, most of the stock solution is supplied to the pressure filter 13, but as cake accumulates in the filter chamber of the pressure filter 13, a portion of the stock solution sent from the pump 11 is supplied into the first and second pressure tanks 14 and 15 through branch pipes 12c and 12d. After a certain period of time, the automatic supply valve 12b closes, the automatic pressurized air supply valve 17a opens, and the automatic residual pressurized air release valve 16a opens at the same time (however, the pressurized air communication valve 19a remains closed). ). At that time, the residual pressurized air sealed in the first pressure tank 14 is released through the automatic residual pressurized air release valve 16a of the air release pipe 16, the automatic release pressure adjustment valve 16b, and the silencer 1.
6c to the atmosphere. After that, the inside of the first pressure tank 14 becomes normal pressure, so the pump 1
The stock solution sent from 1 is introduced from branch pipe 12c. When the liquid level reaches the upper limit, the pump 11 is stopped by the liquid level detector 14a in the first pressure tank, and at the same time, the automatic residual pressurized air release valve 16a is closed, and then the pressurized air communication valve 19a is opened and the second pressure tank 15 is stopped. Pressurized air communication valve 19 is installed to prevent fluctuations in the internal pressure of
a is adjusted and pressurized air is introduced into the first pressure tank 14 to bring both pressure tanks 14 and 15 to the same pressure. Next, when the automatic supply valve 12b is opened, the liquid level in the first pressure tank 14 is higher than the liquid level in the second pressure tank 15, so the liquid moves to the second pressure tank, and the liquid level in both pressure tanks 14 and 15 is increased. are the same. The stock solution is pushed from both pressure tanks 14 and 15 by pressurized air from an air compressor 18 and is sent under pressure to a pressure filter 13.
At this time, when the pressure in both pressure tanks 14 and 15 exceeds the specified pressure, the pressure sensor 15 in the pressure tank
The automatic pressurized air supply valve 17a closes according to the instruction b, and when the pressure drops below the specified pressure, the automatic pressurized air supply valve 17a opens according to the instruction from the pressure tank internal pressure detector 15b, keeping both pressure tanks 14 and 15 at a constant pressure. Keep it. When the liquid levels of the two pressure tanks 14 and 15 reach the lower limit, the automatic supply valve 12b and the pressurized air communication valve 19a are simultaneously closed, and then the automatic residual pressurized air release valve 16a is opened. Then, the residual pressurized air in the first pressure tank 14 is released into the atmosphere and becomes normal pressure, and the pump 11 supplies the stock solution to the upper limit liquid level of the first pressure tank 14. During this time, the second pressure tank 15 continues to maintain a pressurized state and pumps the stock solution to the pressure filter 13. Below, the same process as above is repeated, and the stock solution is transferred to the first pressure tank 14.
The air compressor 18 is intermittently supplied to
The stock solution is continuously supplied under pressure to the pressure filter 13 by the discharge air pressure.
以下述べた如く本発明の方法によると、高揚程
ポンプ等を用いずに、原液は所望の加圧状態で連
続して加圧濾過機に圧送されるので、濾室に蓄積
されるケーキは濾過終了まで一定圧力が加えられ
る。よつて濾過途中で、生成ケーキが崩れたりせ
ず、濾液の清澄度が悪化したり、濾室より原液が
噴出したりするトラブルは皆無となる。また、原
液補給による中断がないので能率のよい濾過を可
能とするものである。 As described below, according to the method of the present invention, the stock solution is continuously pumped to the pressure filter in a desired pressurized state without using a high-pressure pump or the like, so that the cake accumulated in the filter chamber is filtered. Constant pressure is applied until the end. Therefore, the produced cake does not collapse during filtration, and there are no problems such as deterioration of the clarity of the filtrate or spouting of the raw solution from the filtration chamber. Furthermore, since there is no interruption due to stock solution replenishment, efficient filtration is possible.
第１図は従来の加圧濾過機の原液供給方法を示
す図、第２図は本発明に係わる原液供給方法を示
す図である。
１１……原液供給ポンプ、１２……原液供給
管、１２ａ……原液逆止弁、１２ｂ……自動供給
弁、１２ｃ，１２ｄ……枝管、１３……加圧濾過
機、１４……第１圧力タンク、１４ａ……第１圧
力タンク内液位検出器、１５……第２圧力タン
ク、１５ａ……第２圧力タンク内液位検出器、１
５ｂ……圧力タンク内圧力検出器、１６……空気
放出管、１６ａ……自動残留加圧空気放出弁、１
６ｂ……放出圧力自動調節弁、１６ｃ……消音
器、１７……圧力空気導入管、１７ａ……自動加
圧空気供給弁、１７ｂ……加圧用空気逆止弁、１
８……空気圧縮器、１９……加圧空気連絡管、１
９ａ……加圧空気連絡弁。
FIG. 1 is a diagram showing a conventional method for supplying a stock solution to a pressure filter, and FIG. 2 is a diagram showing a method for supplying a stock solution according to the present invention. 11... Stock solution supply pump, 12... Stock solution supply pipe, 12a... Stock solution check valve, 12b... Automatic supply valve, 12c, 12d... Branch pipe, 13... Pressure filter, 14... First Pressure tank, 14a...Liquid level detector in first pressure tank, 15...Second pressure tank, 15a...Liquid level detector in second pressure tank, 1
5b...Pressure tank internal pressure detector, 16...Air release pipe, 16a...Automatic residual pressurized air release valve, 1
6b... Release pressure automatic control valve, 16c... Silencer, 17... Pressure air introduction pipe, 17a... Automatic pressurized air supply valve, 17b... Pressurized air check valve, 1
8... Air compressor, 19... Pressurized air communication pipe, 1
9a... Pressurized air communication valve.
Claims (1)
が連結された２基の圧力タンクのうち、加圧濾過
機より遠方に設けられた圧力タンクは、圧縮空気
を導入又は導入した圧縮空気を放出することによ
り、加圧状態および常圧状態を繰返えし、その常
圧状態の時に濾過原液を充填し、圧縮空気によつ
て常時加圧状態を維持している他方の圧力タンク
の内圧力を低下させることなく、原液供給管を介
して連通状態とすることを特徴とした、加圧濾過
機の原液の連続加圧供給方法。1 Of the two pressure tanks whose bottoms are connected to the stock solution supply pipe of the pressure filtration machine at a distance, the pressure tank located further from the pressure filtration machine introduces compressed air or is used for compressed air that has been introduced. By discharging the air, the pressurized state and normal pressure state are repeated, and when the pressure state is at normal pressure, the other pressure tank is filled with the filtrate stock solution and is constantly maintained in the pressurized state with compressed air. A method for continuously pressurizing and supplying a stock solution to a pressurizing filter, characterized in that the stock solution is brought into communication via a stock solution supply pipe without reducing the internal pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5757280A JPS56152712A (en) | 1980-04-30 | 1980-04-30 | Continuous pressure-supplying method for raw liquid of pressure filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5757280A JPS56152712A (en) | 1980-04-30 | 1980-04-30 | Continuous pressure-supplying method for raw liquid of pressure filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56152712A JPS56152712A (en) | 1981-11-26 |
| JPS6241048B2 true JPS6241048B2 (en) | 1987-09-01 |
Family
ID=13059554
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5757280A Granted JPS56152712A (en) | 1980-04-30 | 1980-04-30 | Continuous pressure-supplying method for raw liquid of pressure filter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56152712A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0462703U (en) * | 1990-10-02 | 1992-05-28 | ||
| JPH0710533B2 (en) * | 1991-08-26 | 1995-02-08 | 三ツ星ベルト株式会社 | Integrated foam molding method |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63129087U (en) * | 1987-02-18 | 1988-08-24 |
-
1980
- 1980-04-30 JP JP5757280A patent/JPS56152712A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0462703U (en) * | 1990-10-02 | 1992-05-28 | ||
| JPH0710533B2 (en) * | 1991-08-26 | 1995-02-08 | 三ツ星ベルト株式会社 | Integrated foam molding method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56152712A (en) | 1981-11-26 |
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