JPS6013590Y2 - Screw press type dehydrator - Google Patents

Description

【考案の詳細な説明】 本考案は、例えば活性汚泥の脱水処理等に使用するスク
リュープレス式脱水機の改良に関する。[Detailed Description of the Invention] The present invention relates to an improvement of a screw press type dehydrator used for dewatering activated sludge, for example.

従来、汚泥の脱水処理をスクリュープレス式脱水機にて
行なうとき、被脱水原料は極めて稀薄で濃度２％程度の
スラリー状で供給され、脱水後濃度は３０％〜５０％と
なり、そのため、出口脱水ケー１ キ量は入口供給容量に対し１５”２５”液排水量は４２
４ 人口供給量の玩〜Ｓとなる。Conventionally, when dewatering sludge is performed using a screw press type dehydrator, the raw material to be dehydrated is supplied in the form of an extremely dilute slurry with a concentration of about 2%, and the concentration after dewatering is 30% to 50%. 1. The amount of water is 15"25" for the inlet supply capacity, and the amount of liquid discharged is 42.
4 The population supply becomes ~S.

従って、特に入口近傍での排水量は多く斯る容積変化に
対しスクリューの容積変化が伴なわず、このためスクリ
ュー中間部の上部に大きな空隙が生じ、その分だけ排水
処理量が減少することになる。Therefore, the volume of water discharged especially near the inlet is large, and the volume change of the screw is not accompanied by such a volume change, which results in a large void at the upper part of the middle part of the screw, and the amount of wastewater treated decreases by that amount. .

スクリュー中間部に生じる空隙は、ホッパー内の被脱水
原料水位を高く設定することにより範囲が挟まり、枦水
量を増す効果はあるが、この場合、水圧による炉液中の
ＳＳの増大、脱水ケーキ出口からの鉄鉋水の流出等、他
の不都合が生じる。The gap created in the middle part of the screw can be narrowed by setting the water level of the raw material to be dehydrated in the hopper high, which has the effect of increasing the amount of water being dehydrated. Other inconveniences may occur, such as water leaking from the iron plane.

本考案は、極めて簡単な構成により、スクリュー中間部
に生じる空隙問題を一挙に解消し、排水処理能力及び濾
過効率を向上し得る新規なスクリュープレス式脱水機を
提供するものである。The present invention provides a novel screw press type dewatering machine with an extremely simple configuration that can solve the problem of voids occurring in the middle part of the screw at once and improve wastewater treatment capacity and filtration efficiency.

以下図面に示す実施例に基づき本考案を具体的に説明す
る。The present invention will be specifically described below based on embodiments shown in the drawings.

スクリュープレス式脱水機に於けるシリンダ１は、外周
面に多数の小孔又はスリットを有す多孔板にて構成され
、一端人口１１には原料ホッパ１２が取付けられ、他端
には脱水ケーキ出口１３が開設され、下方には搾液受皿
２が配備されている。The cylinder 1 in the screw press type dehydrator is composed of a perforated plate having a large number of small holes or slits on the outer peripheral surface, and a raw material hopper 12 is attached to one end 11, and a dehydrated cake outlet is attached to the other end. 13 is opened, and a juice receptacle 2 is arranged below.

スクリュー３は、その両端部をシリンダ１の軸受に軸承
し且つ回転駆動装置３１に連繋して一定速度で軸回転す
るもので、スクリューの軸身部には、一定ピツチ、同一
外径の螺旋翼中３２が配備され、谷径を入口１１より出
口１３に亘り漸次拡大して、１ピンチの容量を出口側に
亘って小となし、搬送原料を圧縮するようになしている
。The screw 3 has both ends supported by bearings of the cylinder 1 and rotates at a constant speed in conjunction with a rotary drive device 31. The screw 3 has spiral blades with a constant pitch and the same outer diameter on the shaft body of the screw. A medium 32 is provided, and the diameter of the valley is gradually expanded from the inlet 11 to the outlet 13, so that the capacity of one pinch is made small across the outlet side, and the conveyed raw material is compressed.

又、スクリュー３には、シリンダ１に出口１３を開閉す
るテーバリング４が進退可能に配備され、該リング４は
スプリング又は油圧シリンダ等によりシリンダ開口１４
に附勢され、閉塞している。Further, a taber ring 4 for opening and closing the outlet 13 in the cylinder 1 is movably provided on the screw 3, and the ring 4 is attached to the cylinder opening 14 by a spring or a hydraulic cylinder.
It has been energized and blocked.

本考案は、脱水稼動中、前記スクリュー３の中間部に生
じる仮想線で示す空隙部３３に対し、部分的に原料を補
給する補給手段５を設けたことを特徴とする。The present invention is characterized in that a replenishing means 5 is provided for partially replenishing the raw material into the gap 33 shown by the imaginary line formed in the middle part of the screw 3 during the dewatering operation.

実施例では、前記空隙部３３に対応してシリンダ１の土
壁に補助人口５１を開設し、該入口５１に沿って路溝５
２を配備し、路溝５３基端をホッパ１２に接続して原料
補給路５２を構成したものである。In the embodiment, an auxiliary port 51 is provided in the earthen wall of the cylinder 1 corresponding to the cavity 33, and a groove 5 is provided along the entrance 51.
2 is provided, and the base end of the channel groove 53 is connected to the hopper 12 to constitute the raw material supply channel 52.

前記路溝５３には、適所に開閉弁５４を設け、空隙部３
３の大小に応じて開閉する。The passage groove 53 is provided with an on-off valve 54 at an appropriate position, and the gap 3
Opens and closes depending on the size of 3.

第３図は原料補給路５２の他の実施例であって、パイプ
５５の基端をホッパ１２に、先端及び分岐パイプ５６先
端を空隙部３３に対応してシリンダ１内に接続し、パイ
プ上には前述例と同様に開閉弁５４を配備している。FIG. 3 shows another embodiment of the raw material supply path 52, in which the base end of a pipe 55 is connected to the hopper 12, the tip and the tip of a branch pipe 56 are connected to the inside of the cylinder 1 in correspondence with the cavity 33, and An on-off valve 54 is provided in the same manner as in the previous example.

本考案は上記の如く、脱水稼動中、スクリュー３の中間
部に発生する空隙部３３に対応して、シリンダ１に補助
人口５１を開設してホッパ１２との間を補助通路５２に
て接続し、予想される空隙部３３に対し部分的に原料を
補給するようにしたから、従来の諸問題を発生すること
なく且つスクリューの全容積が有効に脱水に機能し、所
期の目的を遠戚した効果を有している。As described above, the present invention provides an auxiliary port 51 in the cylinder 1 and connects it to the hopper 12 through an auxiliary passage 52 in response to the void 33 that occurs in the middle of the screw 3 during dewatering operation. Since raw material is partially supplied to the expected void 33, the problems of the conventional method do not occur, and the entire volume of the screw effectively functions for dewatering, achieving the desired purpose by a distant relative. It has the effect of

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は縦断面図、第２図は第１図Ａ−Ａ線断面図、第
３図は他の実施例を示す概略図である。 １・・・・・・シリンダ、１１・・・・・・入口、１２
・・・・・・ホッパ、１３・・・・・・脱水ケーキ出口
、３・・・・・・スクリュー、３３・・・・・・空隙部
、５１・・・・・・補助入口、５２・・・・・・補給路
、５４・・・・・・弁。FIG. 1 is a longitudinal sectional view, FIG. 2 is a sectional view taken along the line A--A in FIG. 1, and FIG. 3 is a schematic diagram showing another embodiment. 1...Cylinder, 11...Inlet, 12
...hopper, 13 ... dehydrated cake outlet, 3 ... screw, 33 ... void section, 51 ... auxiliary inlet, 52 ... ...Supply route, 54...Valve.

Claims (3)

【実用新案登録請求の範囲】[Scope of utility model registration request] （１）一端に原料ホッパ１２、他端に脱水ケーキ出口１
３を有す多孔板製シリンダ１中へ、原料搬送及びプレス
用のスクリュー３を配備した脱水機に於いて、前記シリ
ンダ１には、ホッパ１２の下流側に補助人口５１を開設
し、該入口５１とホッパ１２との間を補給路５２にて接
続したスクリュープレス式脱水機。(1) Raw material hopper 12 at one end, dehydrated cake outlet 1 at the other end
In the dewatering machine, a screw 3 for conveying raw materials and pressing is installed in a perforated cylinder 1 having a perforated plate. 51 and a hopper 12 are connected by a supply path 52. （２）補給路５２は、シリンダ１の上面に沿って形成さ
れた暗溝通路であって、対応するシリンダ１上壁を開口
して内部に連通させると共に、基端はホッパ１２内に接
続した実用新案登録請求の範囲第１項記載のスクリュー
プレス式脱水機。(2) The supply path 52 is a dark groove passage formed along the top surface of the cylinder 1, and the top wall of the corresponding cylinder 1 is opened to communicate with the inside, and the base end is connected to the inside of the hopper 12. A screw press dehydrator according to claim 1 of the utility model registration claim. （３）補給路５２は、基端をホッパ１２内に接続し、先
端をホッパ下流側に位置してシリンダ１内に接続したパ
イプであって、適所に開閉弁５４を備えた実用新案登録
請求の範囲第１項記載のスクリュープレス式脱水機。(3) The supply path 52 is a pipe whose base end is connected to the inside of the hopper 12 and whose tip is located downstream of the hopper and connected to the inside of the cylinder 1, and is equipped with an on-off valve 54 at an appropriate location. The screw press dehydrator according to item 1.