JPS61162298A - Method and device for controlling of screw press - Google Patents
Method and device for controlling of screw pressInfo
- Publication number
- JPS61162298A JPS61162298A JP60003567A JP356785A JPS61162298A JP S61162298 A JPS61162298 A JP S61162298A JP 60003567 A JP60003567 A JP 60003567A JP 356785 A JP356785 A JP 356785A JP S61162298 A JPS61162298 A JP S61162298A
- Authority
- JP
- Japan
- Prior art keywords
- stage
- flow rate
- screw shaft
- pressure
- filtration
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B9/00—Presses specially adapted for particular purposes
- B30B9/02—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material
- B30B9/12—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material using pressing worms or screws co-operating with a permeable casing
- B30B9/16—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material using pressing worms or screws co-operating with a permeable casing operating with two or more screws or worms
- B30B9/166—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material using pressing worms or screws co-operating with a permeable casing operating with two or more screws or worms the screws being coaxially disposed in the same chamber
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B9/00—Presses specially adapted for particular purposes
- B30B9/02—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material
- B30B9/12—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material using pressing worms or screws co-operating with a permeable casing
- B30B9/125—Control arrangements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B9/00—Presses specially adapted for particular purposes
- B30B9/02—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material
- B30B9/12—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material using pressing worms or screws co-operating with a permeable casing
- B30B9/18—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material using pressing worms or screws co-operating with a permeable casing with means for adjusting the outlet for the solid
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Filtration Of Liquid (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
この発明はスクリュープレスの制御方法およびその装置
に関する〇
従来の技術およびその問題点
従来のスクリュープレスは単一段から構成されており、
沖過筒内における原料の液含有量、或いは排出されるケ
ーク性状の変化に応じて、スクリュー軸の回転数を局部
的に調節する運転が行なわれていなかった。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a screw press control method and device. 〇Prior art and its problems A conventional screw press is composed of a single stage.
No operation was carried out to locally adjust the rotational speed of the screw shaft in response to changes in the liquid content of the raw material in the overflow cylinder or in the properties of the discharged cake.
本発明は上記の欠点に鑑み、濾過筒内における被圧搾物
の圧力、およびろ過流量等の変化に応じて軸線方向の所
定区間長におけるスクリュー軸回転数の局部的調節が可
能々スクリュープレスの制御方法およびその装置を提供
することを目的としている。In view of the above-mentioned drawbacks, the present invention enables local adjustment of the screw shaft rotation speed in a predetermined section length in the axial direction according to changes in the pressure of the pressed material in the filtration cylinder and the filtration flow rate, etc. Screw press control The object of the present invention is to provide a method and apparatus thereof.
問題点を解決するだめの手段
本発明は、スクリュー羽根のまわりに近接してろ過筒が
設けられた複数段で構成されたスクリュープレスによる
圧搾濾過において、第１段スクリュー軸終端部付近にお
ける被圧搾物の圧搾圧力と、濾過筒から浸出する搾成の
ろ過流量とをそれぞれ検出し＼上記検出圧力および流量
を圧搾圧力およびろ過流量の標準運転状態における設定
値とそれぞれ比較して修正値を算出し、該修正値に基づ
いて宇められる回転数によって各構成段のスクリュー軸
を回転させるべくしたスクリュープレスの制御方法によ
って、又、第１段スクリュー軸の終端部付近のろ過筒に
取り付けられた圧力検出器、流過液排出管に取り付けら
れた流量検出器、上記両検出器によって検知された圧力
および流量を、標準運転状態における各設定値と比較し
てそれぞれ修正値を算出し、該修正値に基づいてスクリ
ュー軸回転数を決定する演算を行なう演算制御装置、該
演算制御装置の指令によって各構成段のスクリュー軸回
転手段の回転数制御を行なう回転数制御装置をそれぞれ
具備しているスクリュー軸し・スの制御装置によって、
上記問題点を解決する。Means for Solving the Problems The present invention provides for compressed filtration in the vicinity of the terminal end of the first stage screw shaft in compressed filtration using a screw press composed of multiple stages in which filter tubes are provided close to the screw blades. The squeezing pressure of the material and the filtration flow rate of the squeezing product leached from the filter tube are detected respectively, and the corrected values are calculated by comparing the detected pressure and flow rate with the set values of the squeezing pressure and filtration flow rate under standard operating conditions. , by the control method of the screw press to rotate the screw shaft of each component stage at the rotation speed calculated based on the correction value, and also by the pressure attached to the filter cylinder near the terminal end of the first stage screw shaft. The pressure and flow rate detected by the detector, the flow rate detector attached to the effluent discharge pipe, and both of the above-mentioned detectors are compared with each setting value under standard operating conditions to calculate respective corrected values, and the corrected values are calculated. A screw shaft, each of which is equipped with an arithmetic and control device that performs calculations to determine the screw shaft rotational speed based on the arithmetic and control device, and a rotational speed control device that controls the rotational speed of the screw shaft rotation means of each component stage based on instructions from the arithmetic and control device. By the control device of
Solve the above problems.
作 用
第１．第２．第３図において、スクリュー羽根２．３の
まわりに近接してろ過筒４が設けられているスクリュー
プレスの第１段スクリュー軸１終端部付近のろ過筒４に
取シ付けられた圧力検出器２０による検知圧力は変換器
２４を通って電気信号に変換され、次の増幅器２５に入
力される。又、流過液排出管１５に取シ付けられた流量
検出器２３の検知流量は同様に変換器２６を経て増幅器
２７に入力される。上記割増幅器２５．２７からの検知
圧力および検知流量の出力信号はそれぞれ演算制御装置
２８に送られ、該演算制御装Ｒ２８においては操作盤２
９から事前に入力された濾過流量および圧搾圧力の標準
運転状態における設定値との比較がそれぞれ行なわれる
ことによって濾過流量および圧搾圧力の各修正値を算出
し、これらに対応する第１段、第２段のスクリュー軸１
，５の各適正回転数を決定するまでの演算が行なわれる
。Effect 1. Second. In FIG. 3, a pressure detector 20 is attached to a filtration tube 4 near the terminal end of the first stage screw shaft 1 of a screw press in which a filtration tube 4 is provided close to the screw blade 2.3. The detected pressure is converted into an electrical signal through the converter 24 and input to the next amplifier 25. Further, the flow rate detected by the flow rate detector 23 attached to the effluent discharge pipe 15 is similarly inputted to the amplifier 27 via the converter 26. The detected pressure and detected flow rate output signals from the split amplifiers 25 and 27 are respectively sent to the arithmetic and control unit 28, and in the arithmetic and control unit R28, the operation panel 2
The correction values of the filtration flow rate and the compression pressure are calculated by comparing the filtration flow rate and the squeezing pressure with the set values in the standard operating state inputted in advance from 9. 2 stage screw shaft 1
, 5 are calculated until each appropriate rotation speed is determined.
この様にして前記検知量を基に連続的に算出される上記
適正回転数の値は演算制御装置２８から回転数制御装置
へと指令が送信されることにより第１段、第２段スクリ
ュー軸駆動手段７，８の回転数制御が行なわれる。In this way, the value of the appropriate rotation speed that is continuously calculated based on the detected amount is determined by sending a command from the arithmetic control device 28 to the rotation speed control device of the first and second stage screw shafts. The rotational speed of the drive means 7, 8 is controlled.
実施例
第１．第２図において１３は基台、１．５はスクリユー
羽根２，３が固設された第１段スクリュー軸および第２
段スクリュー軸であり・該スクリュー１ｌｉｌｌｌＪ、
５の各駆動軸］、 ａ 、 ５ ａはスプロケット１０
およびチェーン１】をそれぞれ介して第１段、第２段ス
クリュー軸駆動用電動機７．８に連結されている。上記
スクリュー軸１．５の外周側にはスクリュー羽根２，３
に近接して金網等から々る濾過筒４が設けられている。Example 1. In Fig. 2, 13 is the base, 1.5 is the first stage screw shaft on which the screw blades 2 and 3 are fixed, and the second
It is a step screw shaft, and the screw 1lillJ,
Each drive shaft of 5], a, 5 a is a sprocket 10
and a chain 1] are connected to electric motors 7.8 for driving the first and second stage screw shafts, respectively. Screw blades 2 and 3 are located on the outer circumferential side of the screw shaft 1.5.
A filter cylinder 4 made of wire mesh or the like is provided adjacent to the filter cylinder 4.
原料投入口１６から入った原料はスクリュー軸１．５の
回転力によって推進、圧搾されなからケーク排出口３６
の方へ連続的に送られていくが、第１段スクリュー軸１
のある第１段１８の前半部分では主に重力済過が行なわ
れ、搾成成分が濾過筒４から浸出分Ｊｆされていくに従
い液含有率は低減し、上記第１段１８の後半部から第２
段スクリュー軸５を有する第２段１９にかけて圧搾率が
徐々に高められていく。The raw material entering from the raw material input port 16 is propelled and compressed by the rotational force of the screw shaft 1.5, and then passes through the cake discharge port 36.
The first stage screw shaft 1
In the first half of the first stage 18, gravity filtration is mainly performed, and as the squeezed components are leached from the filter cylinder 4, the liquid content decreases, and from the second half of the first stage 18, the liquid content decreases. Second
The compression rate is gradually increased toward the second stage 19 having the stage screw shaft 5.
濾過筒４下方には流過液収集機６が、該収集機６底部に
は濾過液排出管１５が設けられている。A filtrate collector 6 is provided below the filter cylinder 4, and a filtrate discharge pipe 15 is provided at the bottom of the collector 6.
１７．１４は第１段スクリュー軸ｌのそれぞれラジアル
軸受およびラジアル、スラスト軸受、１２は第２段スク
リュー軸５のラジアル、スラスト軸受、５ｂは軸受ブツ
シュである。前記１段スクリュー軸駆動用電動機７は搭
載台９上部に設置されている。前記濾過液排出管１５途
中に設けられた水平骨１５ａ手前の立ち上がり管１５ｂ
には超音波流量計等の流量検出器２３が取シ付けられて
流過液流量を検出し、又、第１段スクリュー軸１終端部
付近のろ過筒４には圧電気式圧力計等の圧力検出器２０
が取り付けられているＯ上記圧力検出器２０は受圧面２
０ａが濾過筒４内周面とほぼ同一面と彦るように濾過筒
４の前記位置に形成された取付孔２０ｂに嵌挿、固定さ
れている。２１はブラケット、２２は取り付は用ボルト
である。Reference numerals 17 and 14 designate a radial bearing and a radial and thrust bearing of the first stage screw shaft l, 12 a radial and thrust bearing of the second stage screw shaft 5, and 5b a bearing bush. The electric motor 7 for driving the first stage screw shaft is installed on the upper part of the mounting base 9. A rising pipe 15b in front of the horizontal bone 15a provided in the middle of the filtrate discharge pipe 15
A flow rate detector 23 such as an ultrasonic flow meter is attached to detect the flow rate of the effluent, and a piezoelectric pressure gauge or the like is attached to the filtration tube 4 near the terminal end of the first stage screw shaft 1. Pressure detector 20
The pressure sensor 20 is attached to the pressure receiving surface 2.
It is fitted and fixed into the attachment hole 20b formed at the above position of the filter tube 4 so that 0a is substantially flush with the inner circumferential surface of the filter tube 4. 21 is a bracket, and 22 is a mounting bolt.
第３図において、圧力検出器２０および流量検出器２３
はそれぞれ変換器２４．２６から増幅機２５．２７を経
て、演算制御装置２８に接続され、該演算制御装置２８
はさらに操作盤２９と接続されている。演算制御装置２
８においては、第１段、第２段スクリュー軸駆動用電動
機７，８の各適正回転数を決定するための既述の演算が
実施され、上記回転数の指令は演算制御装置２８から、
速度設定装Ｗ３２．３５とサイクロコンバータ３１゜３
４と回転計３０．３３とからなる一次周波数制御方式等
の回転数制御装置へそれぞれ送信され、第１段、第２段
スクリュー軸駆動用電動機７．８の回転数の制御が行な
われる。In FIG. 3, a pressure detector 20 and a flow rate detector 23
are connected to the arithmetic and control unit 28 via converters 24, 26 and amplifiers 25, 27, respectively.
is further connected to an operation panel 29. Arithmetic control device 2
In step 8, the above-mentioned calculations are carried out to determine the appropriate rotational speeds of the first and second stage screw shaft drive electric motors 7 and 8, and the rotational speed commands are issued from the calculation and control device 28.
Speed setting device W32.35 and cycloconverter 31°3
The signals are transmitted to a rotation speed control device such as a primary frequency control system consisting of a rotation counter 4 and a rotation counter 30.33, and the rotation speeds of the first and second stage screw shaft drive electric motors 7.8 are controlled.
別の実施例として、第４図のように上記濾過筒４内にお
ける被圧搾物の圧搾圧力に代えてトルク検出器３６によ
シ第１段スクリュー軸１の回転トルクを検出し、これと
流過流量の検出値とを演算制御装置２８へそれぞれ入力
して、第１段、第２段スクリュー軸ｌ、５の各回転数を
制御するようにしてもよい。これは第１段スクリュー軸
１の所要回転トルクを前記圧搾圧力に代えて濾過筒４内
の原料の圧搾率の度合を示す指標とし、同様な演算を実
施することによって第１段、第２段スクリュー軸駆動用
電動機７，８の回転数制御を行なうものである。As another embodiment, as shown in FIG. 4, the rotational torque of the first stage screw shaft 1 is detected by a torque detector 36 instead of the compression pressure of the material to be pressed in the filter cylinder 4, and this and the rotational torque of the first stage screw shaft 1 are detected. The detection value of the excess flow rate may be inputted to the arithmetic and control device 28 to control the respective rotational speeds of the first stage and second stage screw shafts 1 and 5. This is done by using the required rotational torque of the first stage screw shaft 1 as an index indicating the degree of compression of the raw material in the filter cylinder 4 instead of the compression pressure, and by performing similar calculations. The rotational speed of the screw shaft driving electric motors 7 and 8 is controlled.
発明の効果
本発明は既述の構成であわ、圧搾圧力およびろ過流量に
よって痙過筒内における被圧搾物の圧搾進行度合を検知
し、演算制御装置等により各段のスクリュー軸回転数の
制御を行なうものであるから、第１段終端部付近におけ
る被圧搾物の標準運転状態における圧搾圧力が高い場合
には第２段スクリュー軸の回転を早め、これと反対の場
合には遅くすることによシ含液率を調節し、適当な硬さ
の排出ケークを得ることができる。濾過流量が標準運転
状態における所定量を越える場合においては、原料の含
液率が高いので主として重力濾過が行なわれる第１段の
スクリュー軸の回転数を低くし、原料の圧搾、移送の速
度を落して脱水を促進させることにより含液率の調節を
行なうことができる。Effects of the Invention The present invention has the above-described configuration, and detects the degree of progress of squeezing of the material to be squeezed in the squeezing cylinder based on the squeezing pressure and filtration flow rate, and controls the rotational speed of the screw shaft at each stage using an arithmetic control device or the like. Therefore, if the compression pressure of the material to be compressed near the end of the first stage is high under standard operating conditions, the rotation of the second stage screw shaft is accelerated, and in the opposite case, the rotation is slowed down. By adjusting the liquid content, a discharge cake of appropriate hardness can be obtained. If the filtration flow rate exceeds the predetermined amount under standard operating conditions, since the liquid content of the raw material is high, the rotation speed of the first stage screw shaft, where gravity filtration is mainly performed, is lowered, and the speed of squeezing and transferring the raw material is reduced. The liquid content can be adjusted by accelerating dehydration.
さらに本発明はスクリュー軸の無理な回転、若しくは空
回転を未然に防止し得るなどの効果をも奏するものであ
る。Furthermore, the present invention has the advantage of being able to prevent forced rotation or idle rotation of the screw shaft.
第１図は本発明の１実施例を示す一部断面とした側面図
、第２図は圧力検出器の取り付は部を示す拡大断面図、
第３図はブロック図、第４図は第２実施例を示す部分側
面図である。
１・・・第１段スクリュー軸、２．３・・・スクリュー
羽根、４・・・濾過筒、５・・・第２段スクリュー軸、
６・・・濾過液収集機、７・・・第１段スクリュー軸駆
動用電動機、８・・・第２段スクリュー軸駆動用電動機
、１５・・・流過液排出管、１６・・・原料投入口・１
８・・・第１段、１９・・・第２段、２０・・・圧力検
出器、２３・・・流量検出器、２４．２６・・・変換器
、２５ 、２７・・・増幅器、２８・・・演算制御装置
、２９・・・操作盤、３６・・・トルク検呂器FIG. 1 is a partially sectional side view showing an embodiment of the present invention, FIG. 2 is an enlarged sectional view showing the installation of a pressure sensor,
FIG. 3 is a block diagram, and FIG. 4 is a partial side view showing the second embodiment. 1... First stage screw shaft, 2.3... Screw blade, 4... Filter cylinder, 5... Second stage screw shaft,
6... Filtrate collector, 7... Electric motor for driving the first stage screw shaft, 8... Electric motor for driving the second stage screw shaft, 15... Effluent discharge pipe, 16... Raw material Inlet port/1
8... 1st stage, 19... 2nd stage, 20... Pressure detector, 23... Flow rate detector, 24. 26... Converter, 25, 27... Amplifier, 28 ... Arithmetic control unit, 29 ... Operation panel, 36 ... Torque tester
Claims (2)
られた複数段で構成されたスクリュープレスによる圧搾
ろ過において、第１段スクリュー軸終端部付近における
被圧搾物の圧搾圧力と、ろ過筒から浸出するろ過液のろ
過流量とをそれぞれ検出し、上記検出圧力および流量を
圧搾圧力およびろ過流量の標準運転状態における設定値
とそれぞれ比較して修正値を算出し、該修正値に基づい
て定められる回転数によつて各構成段のスクリュー軸を
回転させることを特徴とするスクリュープレスの制御方
法(1) In squeeze filtration using a screw press consisting of multiple stages in which a filtration cylinder is provided close to the screw blade, the pressure of the material to be pressed near the end of the first stage screw shaft and the pressure from the filtration cylinder Detect the filtration flow rate of the filtrate to be leached, respectively, compare the detected pressure and flow rate with the set values of the squeezing pressure and the filtration flow rate in standard operating conditions to calculate a corrected value, and determine based on the corrected value. A method for controlling a screw press characterized by rotating the screw shaft of each component stage depending on the rotation speed.
付けられた圧力検出器、ろ過液排出管に取り付けられた
流量検出器、上記両検出器によつて検知された圧力およ
び流量を、標準運転状態における各設定値と比較してそ
れぞれ修正値を算出し、該修正値に基づいてスクリュー
軸回転数を決定する演算を行なう演算制御装置、該演算
制御装置の指令によつて各構成段のスクリュー軸回転手
段の回転数制御を行なう回転数制御装置をそれぞれ備え
ていることを特徴とするスクリュープレスの制御装置(2) The pressure detector attached to the filtration cylinder near the end of the first stage screw shaft, the flow rate detector attached to the filtrate discharge pipe, and the pressure and flow rate detected by both of the above detectors, An arithmetic control device that calculates corrected values by comparing them with each set value under standard operating conditions, and performs calculations to determine the screw shaft rotation speed based on the corrected values; A control device for a screw press, characterized in that each screw press is equipped with a rotation speed control device for controlling the rotation speed of the screw shaft rotation means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60003567A JPS61162298A (en) | 1985-01-11 | 1985-01-11 | Method and device for controlling of screw press |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60003567A JPS61162298A (en) | 1985-01-11 | 1985-01-11 | Method and device for controlling of screw press |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61162298A true JPS61162298A (en) | 1986-07-22 |
Family
ID=11561009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60003567A Pending JPS61162298A (en) | 1985-01-11 | 1985-01-11 | Method and device for controlling of screw press |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61162298A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007508139A (en) * | 2003-10-15 | 2007-04-05 | ノルディック ウォーター プロダクツ エービー | Apparatus and method for sludge treatment |
| WO2008040953A2 (en) * | 2006-10-03 | 2008-04-10 | Longwood Engineering Co Ltd | Waste screening and processing apparatus |
| JP2018051582A (en) * | 2016-09-28 | 2018-04-05 | 水ｉｎｇ株式会社 | Screw press and operational method of screw press |
| JP2019214077A (en) * | 2019-09-11 | 2019-12-19 | 水ｉｎｇ株式会社 | Screw press and operational method of screw press |
| JP2021115595A (en) * | 2020-01-24 | 2021-08-10 | 水ｉｎｇ株式会社 | Screw press |
| JP2021115590A (en) * | 2020-01-24 | 2021-08-10 | 水ｉｎｇ株式会社 | Screw press and method for washing screw press |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54149976A (en) * | 1978-05-16 | 1979-11-24 | Hotsukou Kakouki Kk | Raw material forced pressure type double spindle doubleeacting screw press |
| JPS5832599A (en) * | 1981-08-21 | 1983-02-25 | Ebara Infilco Co Ltd | Screw press type hydroextractor |
-
1985
- 1985-01-11 JP JP60003567A patent/JPS61162298A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54149976A (en) * | 1978-05-16 | 1979-11-24 | Hotsukou Kakouki Kk | Raw material forced pressure type double spindle doubleeacting screw press |
| JPS5832599A (en) * | 1981-08-21 | 1983-02-25 | Ebara Infilco Co Ltd | Screw press type hydroextractor |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007508139A (en) * | 2003-10-15 | 2007-04-05 | ノルディック ウォーター プロダクツ エービー | Apparatus and method for sludge treatment |
| WO2008040953A2 (en) * | 2006-10-03 | 2008-04-10 | Longwood Engineering Co Ltd | Waste screening and processing apparatus |
| WO2008040953A3 (en) * | 2006-10-03 | 2008-08-07 | Longwood Engineering Co Ltd | Waste screening and processing apparatus |
| JP2018051582A (en) * | 2016-09-28 | 2018-04-05 | 水ｉｎｇ株式会社 | Screw press and operational method of screw press |
| JP2019214077A (en) * | 2019-09-11 | 2019-12-19 | 水ｉｎｇ株式会社 | Screw press and operational method of screw press |
| JP2021115595A (en) * | 2020-01-24 | 2021-08-10 | 水ｉｎｇ株式会社 | Screw press |
| JP2021115590A (en) * | 2020-01-24 | 2021-08-10 | 水ｉｎｇ株式会社 | Screw press and method for washing screw press |
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