JPH0316610A - Vacuum filter - Google Patents

Vacuum filter

Info

Publication number
JPH0316610A
JPH0316610A JP15074289A JP15074289A JPH0316610A JP H0316610 A JPH0316610 A JP H0316610A JP 15074289 A JP15074289 A JP 15074289A JP 15074289 A JP15074289 A JP 15074289A JP H0316610 A JPH0316610 A JP H0316610A
Authority
JP
Japan
Prior art keywords
box
vacuum suction
filtrate
suction box
filter cloth
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.)
Granted
Application number
JP15074289A
Other languages
Japanese (ja)
Other versions
JPH0732845B2 (en
Inventor
Ichiro Noda
野田 一朗
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ishigaki Mechanical Industry Co Ltd
Original Assignee
Ishigaki Mechanical Industry Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ishigaki Mechanical Industry Co Ltd filed Critical Ishigaki Mechanical Industry Co Ltd
Priority to JP1150742A priority Critical patent/JPH0732845B2/en
Publication of JPH0316610A publication Critical patent/JPH0316610A/en
Publication of JPH0732845B2 publication Critical patent/JPH0732845B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Abstract

PURPOSE:To obtain the filter at a low cost by allowing the upper opening of a filtrate box to be confronted with the lower surface of the horizontal filtration zone of a filter cloth and providing a vacuum suction box at the lower part of the filtrate box. CONSTITUTION:A raw liq. supplied on the filter cloth 1 is sucked and filtered by the vacuum suction box 4, and the cake is conveyed by the filter cloth 1, released by a scraper 13 and recovered. The filtrate is discharged to the outside of the filter by a flexible pipe 14 through the vacuum suction box 4. After the vacuum suction is finished, the vacuum in the vacuum suction box 4 is turned off at its end, the box 4 is lowered by a hydraulic jack 7, returned to the leading end by a pneumatic jack 6, and subjected to the succeeding suction. Consequently, since the filter cloth and the filtrate box are synchronously traveled and actuated, the sliding resistance is reduced, the boxes are rapidly returned, and filtrating is carried out stably and continuously.

Description

【発明の詳細な説明】 「産業上の利用分野」 この発明は、水平型の真空濾過機の改良に関し、この発
明では、真空吸引ボックスと濾液ボックスとの摺接部分
の改良に関する。
DETAILED DESCRIPTION OF THE INVENTION "Industrial Application Field" The present invention relates to an improvement of a horizontal vacuum filter, and the present invention relates to an improvement of a sliding contact portion between a vacuum suction box and a filtrate box.

「従来の技術」 この発明に最も類似する技術としては、特公昭55−3
3368号がある。この特公昭55−33368号は、
水平状に周回する炉布の下面に枦液ボックスを備えた真
空ボックスを設けて、真空吸引中は、この真空ボックス
をp布の走行と同調させて走行させ、炉布との摺接を避
けるとともに、その走行終端では、吸引を解いて、シリ
ンダーで元に復帰させるようにしたものである。
"Prior art" The technology most similar to this invention is
There is No. 3368. This Special Publication No. 55-33368 is
A vacuum box equipped with a liquid box is installed on the bottom surface of the furnace cloth that circulates horizontally, and during vacuum suction, this vacuum box is run in synchronization with the movement of the P cloth to avoid sliding contact with the furnace cloth. At the end of the run, the suction is released and the cylinder returns to its original state.

「発明が解決しようとする間鳳点」 然しなボら、この特公昭55−33368号のものでは
、真空吸引装置を備えた枦液ボックスをp布の端部から
復動させるものであるので、大型化した場合には、復動
するのに時間がかかり、その間、吸引作用は中断する。
``The point that the invention seeks to solve'' However, in this patent publication No. 55-33368, a liquid-liquid box equipped with a vacuum suction device is moved back from the edge of the P cloth. , when the size is increased, it takes time for the double movement, and the suction action is interrupted during that time.

また、大型の場合には、これに応じて炉布上のケーキ等
の重■も大きくなり、これを支えるために、FW!ボッ
クスも強大なものを必要とし、高価となる難点がある。
In addition, in the case of a large-sized furnace, the weight of the cake, etc. on the furnace cloth increases accordingly, and in order to support this, the FW! The box also needs to be powerful and has the disadvantage of being expensive.

「問題点を解決するための手段」 この発明は、上述のような従来の問題点を解消したもの
であって、その要旨とするところは、水平状の炉過ゾー
ンを有して、周回する無端状の枦布を設け、その炉布の
水平状の濾過ゾーンの下面に、炉布と同調して走行する
濾液ボックスの上面開口部分を臨ませるとともに、この
濾液ボックスの走行方向に沿って往復動自在な真空吸引
ボ・yクスを設け、この真空吸引ボ・フクスを濾液ボ・
ソクスに対して接近離脱自在にしたものである。
"Means for Solving the Problems" This invention solves the above-mentioned conventional problems, and its gist is that it has a horizontal furnace filtration zone and An endless sieve cloth is provided, and the bottom surface of the horizontal filtration zone of the furnace cloth faces the top opening of the filtrate box that runs in synchronization with the furnace cloth, and the filtrate box reciprocates along the running direction. A movable vacuum suction box is installed, and this vacuum suction box is used as a filtrate box.
This allows them to approach and depart from the Socs at will.

「作用」 すなわち、この発明では、枦液ボックスと真空吸引ボッ
クスとを分離して、枦布上のケーキ等の重量は、枦液ボ
・ンクスに支持させ、軽fiな真空吸引ボックスのみを
往復動させるので、迅速に復動させることができるとと
もに、この復動する真空吸引ボックスを、その往動終端
部で戸液ボックスから下降分離させるので、復動の際の
摺接抵抗がなく、迅速に復動させることができろもので
あるO以下、図面に基づいてこの発明を具体的に説明す
るO 「実施例」 第1図において、符号1は、水平状の炉過ゾーンを有し
て周回するP布、2は、その濾布1の水平状の濾過ゾー
ンに、その上面が当接して、濾布1と同調して周回する
P液ボックス、3は、その駆動チェーンである0符号4
は、上記濾液ボ・ンクス2の下面に設けた真空吸引ボッ
クスであり、レール5上において濾液ボックス20走行
方向に沿って、往復動できるようにするとともに、濾液
ボックス2の下面に、吸着解離自在にしてある0符号6
は、真空吸引ボックス4を復動させるための空圧ジャッ
キであり、符号7は、真空吸引ボックス4をレール5込
上下動させるための油臣ジャ・ンキである。なお、真空
吸引ボックス4を往動させるのに、この事例では、真空
吸引ボックス4を、濾液ボックス2に吸着させて、駆動
チェーン3で駆動するようにし、真空吸引ボックス4を
復動させるときのみ空圧ジャッキ6を用いている。また
、符号8は、濾布1を枦液ボックス2の上面の濾過床9
上に案内するための押えロール、10は、濾液ボックス
2の両側に設けられて、枦布の両側を支持する堰板、1
)は、p布の洗浄装置、l2はF布のテンションロール
、13はケーキ取出用のシュートである。欧お、濾液の
取出ホースを省略しているが、第2図に示すように真空
吸引ボックス4に接続した可撓管l4を用いるものであ
る。
"Function" That is, in this invention, the vacuum suction box and the vacuum suction box are separated, the weight of the cake, etc. on the cloth is supported by the vacuum suction box, and only the light vacuum suction box is reciprocated. Since the vacuum suction box moves backward, it is separated from the door liquid box at the end of its forward movement, so there is no sliding resistance during the backward movement, and it can be moved quickly. In the following, this invention will be specifically explained based on the drawings. The circulating P cloth, 2 is a P liquid box whose upper surface is in contact with the horizontal filtration zone of the filter cloth 1 and rotates in synchronization with the filter cloth 1, and 3 is its drive chain 0 symbol 4
is a vacuum suction box provided on the lower surface of the filtrate box 2, which is capable of reciprocating along the running direction of the filtrate box 20 on the rail 5, and has a vacuum suction box provided on the lower surface of the filtrate box 2 that can be freely adsorbed and dissociated. 0 code 6
is a pneumatic jack for moving the vacuum suction box 4 backward, and numeral 7 is an oil jack for moving the vacuum suction box 4 up and down including the rail 5. In order to move the vacuum suction box 4 forward, in this example, the vacuum suction box 4 is attached to the filtrate box 2 and driven by the drive chain 3, and only when the vacuum suction box 4 is moved backward. A pneumatic jack 6 is used. Further, reference numeral 8 indicates that the filter cloth 1 is connected to a filter bed 9 on the upper surface of the liquid box 2.
Presser rolls 10 for guiding upward are provided on both sides of the filtrate box 2, and weir plates 1 for supporting both sides of the filtrate cloth are provided.
) is a cleaning device for P cloth, 12 is a tension roll for F cloth, and 13 is a chute for taking out the cake. In Europe, the filtrate extraction hose is omitted, but a flexible tube 14 connected to the vacuum suction box 4 is used as shown in FIG.

この発明に係る装置は、上述のように構或されており、
濾布1上(図においては左端部)に供給された原液は、
濾液ボックス2が図中右方に進行するにつれて、真空吸
引ボックス4によって吸引濾過され、その右端部では、
吸引が解かれて、そのケーキカ戸布1によって搬送され
て、右端のスクレーパ−13によって剥離されて回収さ
れる。
The device according to the present invention is constructed as described above,
The stock solution supplied onto the filter cloth 1 (the left end in the figure) is
As the filtrate box 2 moves to the right in the figure, it is suction-filtered by the vacuum suction box 4, and at its right end,
After the suction is released, the cake is conveyed by the door cloth 1, peeled off by the right end scraper 13, and collected.

一方、枦液は、真空吸引ボ・7クス4を経て、可撓管1
4によって機外に取出される。このようにして、真空吸
引を終った真空吸引ボックス4は、その端部で、真空吸
引が解除(バルブ操作であり図示省略)されるとともに
、油圧ジャッキ7で下降された上で、空圧ジャッキ6に
よって始端に戻され、次の吸引に備える。すなわち、こ
の発明に係る装置では、枦布と戸液ボックスと真空吸引
ボックスが同調して進行しながら作動するので、摺接抵
抗がなく、そして、吸引を終って真空吸引ボックス4が
復動する際には、確実に枦液ボックス2から解離される
ので、摺接抵抗がない上、真空吸引ボックス4のみで軽
量であるので、迅速な復帰が可能なるものである。従っ
て、連続して走行している枦布上の原液に対して、吸引
を中断する時間が僅かですむものである。なお、この中
断をなくすることも可能である。すなわち、第3図に示
すように、枦液ボックス2の下方に一対の真空吸引ボッ
クス4、4を設けてこれに対応させて枦液ボックス2の
下面に吸引口15を2個設けて、この吸引口15にそれ
ぞれ逆止弁16を設け、常態において吸引口15を閉止
するようにスプリング17″′c付勢し、一方の真空吸
引ボックス4が吸引中に他方の真空吸引ボックス4を復
動させ、この操作をバルブ操作によって繰り返せば、常
時吸引しながらの連続濾過作業が可能である。このよう
4は枦液ボックス2から離反させることができるので、
摺接抵抗がないは勿論である。
On the other hand, the liquid passes through a vacuum suction box 7 4 and then into a flexible tube 1
4 to be taken out of the machine. After vacuum suction has been completed in this way, the vacuum suction box 4 is released from the vacuum suction at its end (valve operation, not shown), lowered by the hydraulic jack 7, and then lowered by the pneumatic jack. 6 to return to the starting end and prepare for the next suction. That is, in the device according to the present invention, the cloth, the door liquid box, and the vacuum suction box operate in synchronization, so there is no sliding resistance, and the vacuum suction box 4 moves back after suction is completed. In such a case, since the vacuum suction box 2 is reliably separated from the vacuum suction box 2, there is no sliding resistance, and since the vacuum suction box 4 alone is lightweight, quick recovery is possible. Therefore, it takes only a short time to interrupt the suction of the stock solution on the cloth that is continuously running. Note that it is also possible to eliminate this interruption. That is, as shown in FIG. 3, a pair of vacuum suction boxes 4, 4 are provided below the liquid solution box 2, and correspondingly two suction ports 15 are provided on the lower surface of the liquid liquid box 2. Each suction port 15 is provided with a check valve 16, and a spring 17'''c is biased to close the suction port 15 under normal conditions, and one vacuum suction box 4 moves the other vacuum suction box 4 back and forth while the other vacuum suction box 4 is suctioning. By repeating this operation by operating the valve, it is possible to perform continuous filtration work while constantly suctioning the liquid.Since the liquid 4 can be separated from the liquid box 2 in this way,
Of course, there is no sliding resistance.

次に、第4図に示すものは、この発明の他の実施例を示
すものであって、第1図に示すものでは枦布1と同調す
る枦液ボックス2を無端状に連結したのに対して、第4
図のものでは、濾布1と同調してきた枦液ボックス2を
エレベーター18で下降させチェーン19で吸引始動部
に返送し、再びエレベーター18で走行始端部に上げる
ようにしたものである。これをさらに詳述すると、第4
図において、符号1は水平状で周回するように張設した
無端状の炉布、2は、濾布1の水平濾過ゾーンの下面に
密着できるように設けた濾液ボックスで濾布1と同調し
て走行するように駆動チェーン3で駆動されるとともに
、その下面には、真空吸引ボックス4の吸着部が臨ませ
てある。そして、真空吸引ボックス4と駆動チェーン3
とは、濾液ボックス2の下面に設けたフック20ボ駆動
チェ−ン3に係脱するようにしてあり、濾液ボックス2
の走行始端部で、駆動チェーン3と7・フク20が保合
して枦液ボックス2を枦布1と同調させて走行させ、そ
の走行終端では、その保合がはずれて駆動チェーン3の
みが周回し、FwIボックス2は、エレベータ18によ
って移送チェ゜−ン19上に降されて左方に移送された
上で再びエレベータ18によって始端部に上けられ、左
端に設けたピストン22によって押出されるようにして
ある。
Next, what is shown in FIG. 4 shows another embodiment of the present invention, in which in the one shown in FIG. On the other hand, the fourth
In the figure, the liquid filter box 2 that has been synchronized with the filter cloth 1 is lowered by an elevator 18, returned to the suction starting part by a chain 19, and then raised to the starting end by the elevator 18 again. To explain this further, the fourth
In the figure, reference numeral 1 is an endless furnace cloth that is stretched horizontally and around it, and 2 is a filtrate box that is provided so as to be in close contact with the lower surface of the horizontal filtration zone of the filter cloth 1, and is synchronized with the filter cloth 1. The vacuum suction box 4 is driven by a drive chain 3 so that the vacuum suction box 4 moves along its lower surface. And the vacuum suction box 4 and the drive chain 3
The hook 20 provided on the bottom surface of the filtrate box 2 is connected to and detached from the drive chain 3, and the filtrate box 2
At the starting end of the run, the drive chains 3 and 7 and the hook 20 are engaged, causing the liquid-repellent box 2 to run in synchronization with the fabric 1, and at the end of the run, the engagement is broken and only the drive chain 3 is engaged. After going around, the FwI box 2 is lowered onto the transfer chain 19 by the elevator 18, transferred to the left, raised again to the starting end by the elevator 18, and pushed out by the piston 22 provided at the left end. It is designed so that

一方、炉.液ボックス2の下方に設けた真空吸引ボック
ス4は、その下面に設けた車輪23によってレール5上
を移動自在にしてあり、濾液ボックス2と同調して走行
する往路は、濾液ボックス2の駆動チェーン3によって
移送され、吸引を終っての復路では、空圧ピストン24
によって駆動され復帰するようにしてある。また、この
真空吸引ボックス4は、その走行用のレール5が油圧ジ
ャッキ7によって上下するようにしてあり、吸引を終っ
た復路では、下降した状態で復帰するようにしてある。
On the other hand, the furnace. The vacuum suction box 4 provided below the liquid box 2 is movable on a rail 5 by means of wheels 23 provided on its lower surface, and the outward path of traveling in synchronization with the filtrate box 2 is driven by the drive chain of the filtrate box 2. 3, and on the return trip after suction, the pneumatic piston 24
It is designed so that it is driven by and returns to its original state. Further, the vacuum suction box 4 is configured such that its running rail 5 is raised and lowered by a hydraulic jack 7, and on the return trip after suction is completed, it returns in a lowered state.

尚、第4図にむいて符号25は、真空吸引ボックス4を
枦液ボックス2の吸引部に正しく合致させるための位置
決め用の検知レバーであり、復動してきた真空吸引ボッ
クス4を検知してピストン22への高圧空気をとめ、真
空吸引ボックス4を停止させるようにしている。
In addition, reference numeral 25 in FIG. 4 is a detection lever for positioning the vacuum suction box 4 to correctly match the suction part of the liquid solution box 2, and detects the vacuum suction box 4 moving back. The high pressure air to the piston 22 is stopped and the vacuum suction box 4 is stopped.

この第3図に示す真空吸引濾過機では、給液器26から
濾布1上に供給された原液は、枦布1の走行に伴なって
、その水平状の濾過部で吸引濾過され、そのケーキは、
右端部で濾布1から剥離され、そのFNは、濾液ボック
ス2、真空吸引ボックス4を経て回収される。そして、
濾液ボックス2は、その終端において、濾布1から解き
離され、移送チェーンl9によって始端に回送される。
In the vacuum suction filtration machine shown in FIG. 3, the stock solution supplied onto the filter cloth 1 from the liquid supply device 26 is suction-filtered in the horizontal filter section as the cloth 1 travels. The cake is
The FN is peeled off from the filter cloth 1 at the right end and is collected via the filtrate box 2 and the vacuum suction box 4. and,
At its end, the filtrate box 2 is uncoupled from the filter cloth 1 and transported to the beginning by means of a transfer chain l9.

この一連の炉過操作において、濾液ボックス2および真
空吸引ボックス4ボ枦布1に追随して走行するので、こ
れらと枦布1との摺接抵抗がなく、また、これらが復動
するときには、真空吸引ボックス4が濾液ボックス2か
ら隔離するので、枦液ボックス2との摺接がなく、迅速
に復動させることができ、復動の際の吸引ロス時間を短
縮することボできる0 以上の説明では、供給された原液の単なる胛過について
説明したが、この発明によれば、供給した原液を濾過し
ながら洗浄し、原液からの濾液、ケーキの洗浄濾液と各
段階における濾液を分離して取出すことも可能である。
In this series of furnace filtration operations, the filtrate box 2 and the vacuum suction box 4 move following the cover cloth 1, so there is no sliding resistance between them and the cover cloth 1, and when they move back, Since the vacuum suction box 4 is isolated from the filtrate box 2, there is no sliding contact with the filtrate box 2, and the return movement can be made quickly, reducing the suction loss time during the return movement. In the explanation, simple filtration of the supplied stock solution was explained, but according to the present invention, the supplied stock solution is washed while being filtered, and the filtrate from the stock solution, the cake washing filtrate, and the filtrate at each stage are separated. It is also possible to take it out.

すなわち、図示のように濾液ボックスを区切っておいて
、その区切った濾液ボックスの各々に対応するように真
空吸引ボックスを配設しておけばよいものである。
That is, it is sufficient to divide the filtrate boxes as shown in the figure and arrange vacuum suction boxes corresponding to each of the divided filtrate boxes.

「発明の効果」 以上の説明で明らかなように、この発明に係る装置は、
従来のこの種装置に比較して、真空吸引ボックスの復帰
が迅速で、炉過を中断する時間が短かく、高効率の濾過
が可能であるとともに、吸引ボックスのみの復帰である
ので、ケーキ等の荷重による障害がなく、安定した連続
濾過作業が可能である等、従来技術の問題点を悉く解消
し得たものである。
"Effects of the Invention" As is clear from the above explanation, the device according to the present invention has
Compared to conventional devices of this kind, the vacuum suction box returns quickly, the time to interrupt the furnace filtration is short, and highly efficient filtration is possible.As only the suction box returns, it is possible to reduce the amount of cake, etc. This eliminates all the problems of the prior art, such as being able to perform stable continuous filtration work without any problems caused by the load.

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

第1図は、この発明を施した真空濾過機の概略の側面図
で、その一部を破断して示している。第2図は、第1図
の(A) − (A) aに沿っての断面図、第3図は
真空吸引装置の池の実施例を示す横断面図、第4図は、
真空吸引ボックスの他の実施例の概略の側面図である。 符号説明 1.F布2.濾液ボックス  4.真空ボックス5.案
内レール  7.油圧ジャッキ
FIG. 1 is a schematic side view of a vacuum filter according to the present invention, with a portion thereof cut away. FIG. 2 is a sectional view taken along line (A)-(A) a of FIG. 1, FIG. 3 is a cross-sectional view showing an embodiment of the pond of the vacuum suction device, and FIG.
FIG. 3 is a schematic side view of another embodiment of a vacuum suction box; Code explanation 1. F cloth 2. Filtrate box 4. Vacuum box5. Guide rail 7. hydraulic jack

Claims (2)

【特許請求の範囲】[Claims] (1)水平状の濾過ゾーンを有して周回する無端状の濾
布1を設け、その濾布1の水平状の濾過ゾーンの下面に
、濾布1と同調して走行する濾液ボックス2の上面開口
部分を臨ませるとともに、この濾液ボックス2の下部に
は、濾液ボックス2の走行方向に沿って、往復動自在な
真空吸引ボックス4を設け、この真空吸引ボックス4を
濾液ボックス2に対して、接近離脱にしてなる真空濾過
装置。
(1) A circulating endless filter cloth 1 having a horizontal filtration zone is provided, and a filtrate box 2 running in synchronization with the filter cloth 1 is installed on the lower surface of the horizontal filtration zone of the filter cloth 1. A vacuum suction box 4 is provided at the bottom of the filtrate box 2 that can freely move back and forth along the running direction of the filtrate box 2, with the opening on the top facing the top surface. , a vacuum filtration device that uses approach and separation.
(2)上記真空吸引ボックス4を濾液ボックス2に対し
て接近離脱させる手段が、真空吸引ボックス4が走行す
る案内レール5の下面に設けられた油圧ジャッキ7であ
る特許請求の範囲第(1)項記載の真空濾過装置。
(2) Claim No. 1, wherein the means for moving the vacuum suction box 4 toward and away from the filtrate box 2 is a hydraulic jack 7 provided on the lower surface of the guide rail 5 on which the vacuum suction box 4 runs. Vacuum filtration device as described in section.
JP1150742A 1989-06-14 1989-06-14 Vacuum filtration device Expired - Lifetime JPH0732845B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1150742A JPH0732845B2 (en) 1989-06-14 1989-06-14 Vacuum filtration device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1150742A JPH0732845B2 (en) 1989-06-14 1989-06-14 Vacuum filtration device

Publications (2)

Publication Number Publication Date
JPH0316610A true JPH0316610A (en) 1991-01-24
JPH0732845B2 JPH0732845B2 (en) 1995-04-12

Family

ID=15503425

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1150742A Expired - Lifetime JPH0732845B2 (en) 1989-06-14 1989-06-14 Vacuum filtration device

Country Status (1)

Country Link
JP (1) JPH0732845B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009034609A (en) * 2007-08-02 2009-02-19 Ito Seisakusho:Kk Sand dehydrator

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH055522A (en) * 1991-06-26 1993-01-14 Noritz Corp Monitoring method of abnormal supply of fuel to combustion equipment

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH055522A (en) * 1991-06-26 1993-01-14 Noritz Corp Monitoring method of abnormal supply of fuel to combustion equipment

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009034609A (en) * 2007-08-02 2009-02-19 Ito Seisakusho:Kk Sand dehydrator
JP4633092B2 (en) * 2007-08-02 2011-02-16 株式会社伊藤製作所 Sand dewatering machine

Also Published As

Publication number Publication date
JPH0732845B2 (en) 1995-04-12

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