JP2007075701A - Screw type filtration and dewatering apparatus - Google Patents

Screw type filtration and dewatering apparatus Download PDF

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JP2007075701A
JP2007075701A JP2005264813A JP2005264813A JP2007075701A JP 2007075701 A JP2007075701 A JP 2007075701A JP 2005264813 A JP2005264813 A JP 2005264813A JP 2005264813 A JP2005264813 A JP 2005264813A JP 2007075701 A JP2007075701 A JP 2007075701A
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pressure regulating
regulating valve
valve seat
screw
filter body
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JP4553815B2 (en
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Tatsuya Chiga
達也 千賀
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Tsurumi Manufacturing Co Ltd
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Tsurumi Manufacturing Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a screw type filtration and dewatering apparatus capable of preventing compaction and solidification of dewatered cake in a space between a pressure regulating valve and an annular valve seat during the operation, sufficiently discharging the dewatered cake inside even when performing the idling when the operation is completed, and requiring no periodical cleaning work while opening the pressure regulating valve. <P>SOLUTION: A starting end opening part of a filtration body 1 formed in a cylindrical shape forms a sludge sending-in port 3, a screw conveyor 5 is fitted to a center hole 4, and a pressure regulating valve 7 facing an annular valve seat 6 fixed to a terminating end opening part of the filtration body 1 is attached to a screw shaft 5S. A space between opposing faces of the pressure regulating valve 7 and the annular valve seat 6 is freely adjusted to form a sending-out port 9 of dewatered cake. Stirring blades 8 are projected on an inner end face of the pressure regulating valve 7, and tips of the stirring blades 8 are directed toward the inside of the terminating end opening part of the filtration body 1. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は例えば、オキシデーションディッチ法等に代表される比較的小規模の下水処理作業において発生する懸濁微粒子を含む懸濁液を、濃縮工程を経由しない低濃度の状態により、濾水と懸濁微粒子とに分離するためのスクリュー式濾過脱水装置に関するものである。   In the present invention, for example, a suspension containing suspended fine particles generated in a relatively small-scale sewage treatment operation typified by an oxidation ditch method is suspended from filtrate in a low concentration state without passing through a concentration step. The present invention relates to a screw type filter dehydrator for separating into turbid fine particles.

スクリュー式濾過脱水装置では通常、脱水ケーキの含水率を一定値に保持させ、且つ、その排出量を適量に増減させるための圧力調整弁が、吐出口口周の環状弁座と広狭自在に対向させた態様で装着されている（例えば、特許文献1参照。）。   In a screw type filtration dehydrator, the pressure regulating valve for keeping the moisture content of the dehydrated cake at a constant value and increasing / decreasing the discharge amount to an appropriate amount is opposed to the annular valve seat around the discharge port. (See, for example, Patent Document 1).

しかし、分離対象とされる汚泥の種類によっては、運転時間の経過と共に排出口内部の脱水ケーキが圧密固化し、圧力調整弁と環状弁座との間の間隙が詰って脱水ケーキの排出が阻害されることになる。また、運転終了後に空運転を行っても、排出口内部の脱水ケーキ排出が不十分で、停止中に残存している脱水ケーキが圧密固化し、運転再開時に上記間隙が詰り脱水ケーキの排出が阻害されることがある。そのため従来は、定期的に圧力調整弁を開放して清掃を行う必要があった。
特開昭６０−１９０１２号公報 （第１図） However, depending on the type of sludge to be separated, the dewatered cake inside the discharge port becomes consolidated and solidifies as the operation time elapses, and the gap between the pressure regulating valve and the annular valve seat becomes clogged, preventing the dewatered cake from being discharged. Will be. In addition, even if the idle operation is performed after the operation is completed, the dewatered cake inside the discharge port is not sufficiently discharged, the dewatered cake remaining during the stop is consolidated and solidified, and when the operation is resumed, the gap is clogged and the dewatered cake is discharged. May be inhibited. Therefore, conventionally, it has been necessary to periodically open the pressure regulating valve for cleaning.
JP-A-60-19012 (Fig. 1)

解決しようとする課題は、運転中において脱水ケーキが圧力調整弁と環状弁座との間の間隙に圧密固化することを防止でき、運転終了時の空運転を実施した場合も内部の脱水ケーキ排出が十分に行なわれ、従来行なわれていたような圧力調整弁を開放しての定期的な清掃作業を必要としない、スクリュー式濾過脱水装置を提供することにある。   The problem to be solved is that the dewatered cake can be prevented from being consolidated and solidified in the gap between the pressure regulating valve and the annular valve seat during operation, and the internal dewatered cake can be discharged even when the idling operation is performed at the end of the operation. It is an object of the present invention to provide a screw-type filtration and dehydration apparatus that is sufficiently performed and does not require a regular cleaning operation by opening a pressure regulating valve as conventionally performed.

本発明スクリュー式濾過脱水装置では、筒状に形成された濾過体の始端開口部を汚泥の送り込み口として中心孔にスクリューコンベアを嵌装し、上記濾過体の終端開口部に定着された環状弁座と対向する圧力調整弁をスクリュー軸に装着し、該圧力調整弁と環状弁座との対向面間の間隙を広狭自在に調整し得るよう構成して脱水ケーキの送り出し口となし、上記圧力調整弁の内端面には攪拌羽根が凸設され、該攪拌羽根の先端は濾過体の終端開口部内へ向けられていることを、最も主要な特徴とする。   In the screw type filtration dewatering device of the present invention, the annular valve is fixed to the terminal opening of the filter body by fitting a screw conveyor in the center hole with the start end opening of the filter body formed in a cylindrical shape as a sludge feed port. A pressure regulating valve facing the seat is attached to the screw shaft, and the gap between the facing surfaces of the pressure regulating valve and the annular valve seat can be adjusted in a wide and narrow manner. The main feature is that a stirring blade is projected on the inner end face of the regulating valve, and the tip of the stirring blade is directed into the terminal opening of the filter body.

本発明スクリュー濾過脱水装置によれば、運転中において脱水ケーキが圧力調整弁と環状弁座との間の間隙に圧密固化することを防止できて脱水ケーキの排出機能に優れ、運転終了時の空運転を実施した場合も内部の脱水ケーキ排出が十分に行なわれ、従来行なわれていたような圧力調整弁を開放しての定期的な清掃作業を必要とせずメンテナンス性に優れているという利点もある。   According to the screw filtration dewatering device of the present invention, it is possible to prevent the dewatered cake from being consolidated and solidified in the gap between the pressure regulating valve and the annular valve seat during operation, and is excellent in the function of discharging the dewatered cake. Even when the operation is carried out, the dewatered cake inside is sufficiently discharged, and there is an advantage that it is excellent in maintainability without requiring regular cleaning work by opening the pressure regulating valve as conventionally done. is there.

筒状に形成された濾過体の始端開口部を汚泥の送り込み口として中心孔にスクリューコンベアを嵌装し、上記濾過体の終端開口部に定着された環状弁座と対向する圧力調整弁をスクリュー軸に装着し、該圧力調整弁と環状弁座との対向面間の間隙を広狭自在に調整し得るよう構成して脱水ケーキの送り出し口となし、上記圧力調整弁の内端面には長短差を有する複数本の攪拌羽根が凸設され、各攪拌羽根の先端はそれぞれ濾過体の終端開口部内へ向けられているものとする。   A screw conveyor is fitted in the center hole with the start opening of the filter body formed in a cylindrical shape as a sludge feed port, and the pressure regulating valve facing the annular valve seat fixed in the terminal opening of the filter body is screwed It is attached to the shaft, and the gap between the opposing surfaces of the pressure regulating valve and the annular valve seat can be adjusted to be wide and narrow so as to serve as a dewatering cake delivery port. The inner end surface of the pressure regulating valve has a difference in length It is assumed that a plurality of stirring blades having protrusions are provided so that the tips of the stirring blades are respectively directed into the terminal opening of the filter body.

図１において、１は筒状の濾過体であり、例えば多数枚の環状濾過プレートを互に細隙を隔てて積層状に配列させ、上記各細隙を濾水流出溝２・・２とする。濾過体１の始端開口部は汚泥の送り込み口３として中心孔４にスクリューコンベア５が嵌装される。６は濾過体１の終端開口部に定着された環状弁座、７は該環状弁座６と対向してスクリュー軸５Ｓに装着された圧力調整弁であり、該圧力調整弁７と環状弁座６との対向面間の間隙を広狭自在に調整し得るよう構成して脱水ケーキの送り出し口９を保有させる。１０は圧力調整弁７を所定の設定位置で定着させるためのセットボルト、１１はスクリューコンベア５を駆動させるための原動機である。   In FIG. 1, reference numeral 1 denotes a tubular filter body. For example, a large number of annular filter plates are arranged in a stacked manner with a gap between each other, and the slits serve as drainage outflow grooves 2. . A screw conveyor 5 is fitted into the center hole 4 at the opening at the starting end of the filter body 1 as an inlet 3 for sludge. 6 is an annular valve seat fixed to the terminal opening of the filter body 1, and 7 is a pressure regulating valve mounted on the screw shaft 5 S so as to face the annular valve seat 6, and the pressure regulating valve 7 and the annular valve seat The dewatered cake delivery port 9 is held in such a manner that the gap between the opposed surfaces to 6 can be freely adjusted. Reference numeral 10 denotes a set bolt for fixing the pressure regulating valve 7 at a predetermined setting position, and 11 denotes a prime mover for driving the screw conveyor 5.

原動機１１を駆動させるとスクリューコンベア５が図２の矢印方向へ回転し、送り込み口３から濾過体１の中心孔４内へ送り込まれた汚泥が、スクリューブレード５Ｂに沿って旋回しながら軸方向へ前進する過程において、濾過された濾水は濾水流出溝２・・２より流出すると共に脱水ケーキは前方の送り出し口９から順次排出されるのであるが、圧力調整弁７と環状弁座６との対向面間の間隙を広く調整することによって脱水ケーキの排出量を増大させ、上記間隙を狭く調整することによって低含水率の脱水ケーキを排出させることができる。そして、スクリューコンベア５の回転時にはスクリュー軸５Ｓと共に圧力調整弁７が回転し、該圧力調整弁７の内端面に凸設された攪拌羽根８が濾過体１の終端開口部内で回転運動することにより、送り出し口９内部の脱水ケーキを攪拌して該脱水ケーキの圧密固化を防ぐことができるので、低含水率の脱水ケーキを排出させるために上記間隙を狭く設定した場合でも詰りを生じることがなく、脱水ケーキの排出は支障なく行なわれる。また、運転終了時に空運転を実施した場合も、攪拌羽根８の攪拌作用によって上記間隙内に残存する脱水ケーキの排出が十分に行われるので、運転再開時における脱水ケーキの排出作用に支障を来たすことはない。また、攪拌羽根8の形状としては単純な棒状とするがけでなく、例えば攪拌羽根８の先端部をＬ字型やクランク軸状(図示せず)に曲成させてもよい。   When the prime mover 11 is driven, the screw conveyor 5 rotates in the direction of the arrow in FIG. 2, and the sludge fed from the feed port 3 into the central hole 4 of the filter body 1 turns in the axial direction while turning along the screw blade 5B. In the process of moving forward, the filtered filtrate flows out from the drainage outflow grooves 2 and 2 and the dewatered cake is sequentially discharged from the front delivery port 9, but the pressure regulating valve 7 and the annular valve seat 6 It is possible to increase the discharge amount of the dehydrated cake by adjusting the gap between the opposite surfaces to be wide, and to discharge the dehydrated cake having a low water content by adjusting the gap narrowly. When the screw conveyor 5 is rotated, the pressure adjusting valve 7 is rotated together with the screw shaft 5S, and the stirring blade 8 protruding from the inner end surface of the pressure adjusting valve 7 is rotated in the terminal opening of the filter body 1. Since the dehydrated cake inside the delivery port 9 can be stirred to prevent the dehydrated cake from being consolidated and solidified, clogging does not occur even when the gap is set narrow in order to discharge the dehydrated cake having a low water content. The dehydrated cake is discharged without any problem. In addition, even when the idling operation is performed at the end of the operation, the dewatering cake remaining in the gap is sufficiently discharged by the stirring action of the stirring blade 8, which hinders the discharging action of the dewatering cake when the operation is resumed. There is nothing. Further, the shape of the stirring blade 8 is not limited to a simple rod shape, but the tip of the stirring blade 8 may be bent into an L shape or a crankshaft shape (not shown), for example.

実施例１の構成を前提として、圧力調整弁７の内端面には長短差を有する複数本の攪拌羽根８・・８が凸設され、各攪拌羽根８・・８の先端はそれぞれ濾過体１の終端開口部内へ向けられている。この構成により複数の攪拌羽根８・・８による攪拌領域１２が図３に示されるように広くなり、実施例１の場合よりも更に攪拌効果が増大する。また、実施例１場合と同しく攪拌羽根８の形状としては単純な棒状とするがけでなく、例えば攪拌羽根８の先端部をＬ字型やクランク軸状(図示せず)に曲成させてもよい。   On the premise of the configuration of the first embodiment, a plurality of stirring blades 8... 8 having a difference in length are projected on the inner end surface of the pressure regulating valve 7, and the tips of the stirring blades 8. Directed into the end opening of the. With this configuration, the stirring region 12 by the plurality of stirring blades 8 is widened as shown in FIG. 3, and the stirring effect is further increased as compared with the case of the first embodiment. Further, the shape of the stirring blade 8 is not limited to a simple rod shape as in the case of the first embodiment. For example, the tip of the stirring blade 8 is bent into an L shape or a crankshaft shape (not shown). Also good.

本発明スクリュー式濾過脱水装置の構成を略示した縦断側面図である。It is the vertical side view which showed the structure of this invention screw type filtration dehydration apparatus schematically. 図１のＡ−Ａ線における要部縦断正面図である。It is a principal part longitudinal section front view in the AA line of FIG. 図２のＢ−Ｂ線における要部縦断側面図である。It is a principal part vertical side view in the BB line of FIG.

符号の説明Explanation of symbols

１ 濾過体
２ 濾水流出溝
３ 汚泥の送り込み口
４ 中心孔
５ スクリューコンベア
５Ｓ スクリュー軸
６ 環状弁座
７ 圧力調整弁
８ 攪拌羽根
９ 脱水ケーキの送り出し口 DESCRIPTION OF SYMBOLS 1 Filter body 2 Drainage groove 3 Sludge feed port 4 Center hole 5 Screw conveyor 5S Screw shaft 6 Annular valve seat 7 Pressure control valve 8 Stirrer blade 9 Dehydrated cake feed port

Claims (2)

筒状に形成された濾過体の始端開口部を汚泥の送り込み口として中心孔にスクリューコンベアを嵌装し、上記濾過体の終端開口部に定着された環状弁座と対向する圧力調整弁をスクリュー軸に装着し、該圧力調整弁と環状弁座との対向面間の間隙を広狭自在に調整し得るよう構成して脱水ケーキの送り出し口となし、上記圧力調整弁の内端面には攪拌羽根が凸設され、該攪拌羽根の先端は濾過体の終端開口部内へ向けられていることを特徴とする、スクリュー式濾過脱水装置。   A screw conveyor is fitted in the center hole with the start opening of the filter body formed in a cylindrical shape as a sludge feed port, and the pressure regulating valve facing the annular valve seat fixed in the terminal opening of the filter body is screwed It is attached to a shaft, and the gap between the opposing surfaces of the pressure regulating valve and the annular valve seat can be adjusted to be wide and narrow so as to serve as a dewatering cake feed-out port, and the stirring blade is provided on the inner end surface of the pressure regulating valve. Is provided, and the tip of the stirring blade is directed into the terminal opening of the filter body. 請求項１記載のスクリュー式濾過脱水装置において、圧力調整弁の内端面には長短差を有する複数本の攪拌羽根が凸設され、各攪拌羽根の先端はそれぞれ濾過体の終端開口部内へ向けられていることを特徴とする、スクリュー式濾過脱水装置   The screw type filtration dehydration apparatus according to claim 1, wherein a plurality of stirring blades having a difference in length are provided on the inner end face of the pressure regulating valve, and the tip ends of the stirring blades are respectively directed into the terminal opening of the filter body. A screw-type filter dehydrator
JP2005264813A 2005-09-13 2005-09-13 Screw type filter dehydrator Active JP4553815B2 (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100857279B1 (en) 2007-04-26 2008-09-08 모나스펌프 주식회사 Pressure transfer device of dehydration cake
CN106390555A (en) * 2016-10-11 2017-02-15 鹤壁职业技术学院 Automatic screw-extrusion dewatering device
CN107718653A (en) * 2017-11-05 2018-02-23 大丰中坤环保机械制造有限公司 A kind of screw extrusion dewaterer
CN108607247A (en) * 2018-04-12 2018-10-02 陈秀花 A kind of dedicated extruded filter device of biological products material
CN110467329A (en) * 2019-08-23 2019-11-19 蔡涛 A kind of screw extrusion type excrement dehydrator

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55112391A (en) * 1979-02-15 1980-08-29 Hobart Corp Method and apparatus for controlling moisture of pulp
JPS58501111A (en) * 1981-07-20 1983-07-14 ハント　ア−サ−　ジエイ Screw press for liquid extraction
JPS60131295U (en) * 1984-02-09 1985-09-03 ブンリ工業株式会社 sludge squeezer
JP2005169322A (en) * 2003-12-12 2005-06-30 Amukon Kk Solid/liquid separation device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55112391A (en) * 1979-02-15 1980-08-29 Hobart Corp Method and apparatus for controlling moisture of pulp
JPS58501111A (en) * 1981-07-20 1983-07-14 ハント　ア−サ−　ジエイ Screw press for liquid extraction
JPS60131295U (en) * 1984-02-09 1985-09-03 ブンリ工業株式会社 sludge squeezer
JP2005169322A (en) * 2003-12-12 2005-06-30 Amukon Kk Solid/liquid separation device

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100857279B1 (en) 2007-04-26 2008-09-08 모나스펌프 주식회사 Pressure transfer device of dehydration cake
CN106390555A (en) * 2016-10-11 2017-02-15 鹤壁职业技术学院 Automatic screw-extrusion dewatering device
CN106390555B (en) * 2016-10-11 2018-12-11 鹤壁职业技术学院 A kind of screw extrusion automatic dewatering unit
CN107718653A (en) * 2017-11-05 2018-02-23 大丰中坤环保机械制造有限公司 A kind of screw extrusion dewaterer
CN108607247A (en) * 2018-04-12 2018-10-02 陈秀花 A kind of dedicated extruded filter device of biological products material
CN108607247B (en) * 2018-04-12 2020-11-17 惠安县崇武镇兴钗茶具商行 Special extrusion filter equipment of biological product material
CN110467329A (en) * 2019-08-23 2019-11-19 蔡涛 A kind of screw extrusion type excrement dehydrator

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