JPH0543031A - Screw conveyor - Google Patents
Screw conveyorInfo
- Publication number
- JPH0543031A JPH0543031A JP20311791A JP20311791A JPH0543031A JP H0543031 A JPH0543031 A JP H0543031A JP 20311791 A JP20311791 A JP 20311791A JP 20311791 A JP20311791 A JP 20311791A JP H0543031 A JPH0543031 A JP H0543031A
- Authority
- JP
- Japan
- Prior art keywords
- discharge
- gate plate
- discharge tube
- opening
- powder
- 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.)
- Withdrawn
Links
Landscapes
- Screw Conveyors (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、成形材料など粉体を搬
送するために用いられるスクリューコンベアに関するも
のである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a screw conveyor used to convey powder such as a molding material.
【０００２】[0002]
【従来の技術】成形材料など粉体を搬送するために、搬
送管１内に搬送スクリュー２を設けて形成されるスクリ
ューコンベアが使用されている。この搬送管１の途中に
複数箇所において排出口３を設け、各排出口３から粉体
を取り出すことができるようにしてある。そしてこの各
排出口３には排出筒４を下方へ突出して設け、排出筒４
の下端の開口部にゲート板５を取り付けて排出口３を開
閉できるようにしてある。2. Description of the Related Art In order to convey powder such as a molding material, a screw conveyor which is formed by providing a conveying screw 2 in a conveying pipe 1 is used. Discharge ports 3 are provided at a plurality of points in the middle of the carrier pipe 1 so that powder can be taken out from each discharge port 3. A discharge pipe 4 is provided at each discharge port 3 so as to project downward.
A gate plate 5 is attached to the opening at the lower end of the discharge port 3 so that the discharge port 3 can be opened and closed.
【０００３】図２（ａ）はスライドゲートとしてゲート
板５を取り付けるようにした例を示すものであり、シリ
ンダー装置１０を作動させてゲート板５を水平方向に移
動させることによって、排出筒４の下端の開口部を開口
させたり閉塞させたりできるようにしたものである。図
２（ｂ）はフラップ式ゲートとしてゲート板５を取り付
けるようにした例を示すものであり、シリンダー装置１
０を作動させてゲート板５を上下方向に回動させること
によって、排出筒４の下端の開口部を開口させたり閉塞
させたりできるようにしたものである。さらに図２
（ｃ）はカットゲートとしてゲート板５を取り付けるよ
うにした例を示すものであり、シリンダー装置１０を作
動させてゲート板５を左右方向に回動させることによっ
て、排出筒４の下端の開口部を開口させたり閉塞させた
りできるようにしたものである。FIG. 2 (a) shows an example in which the gate plate 5 is attached as a slide gate, and the cylinder plate 10 is operated to move the gate plate 5 in the horizontal direction, whereby the discharge tube 4 is moved. The opening at the lower end can be opened or closed. FIG. 2B shows an example in which the gate plate 5 is attached as a flap type gate.
By operating 0 to rotate the gate plate 5 in the vertical direction, the opening at the lower end of the discharge tube 4 can be opened or closed. Furthermore, FIG.
(C) shows an example in which the gate plate 5 is attached as a cut gate. By operating the cylinder device 10 to rotate the gate plate 5 in the left-right direction, the opening at the lower end of the discharge tube 4 is shown. It is designed to be able to open and close.
【０００４】[0004]
【発明が解決しようとする課題】しかし、搬送する粉体
として成形材料のように高吸湿性を有するものや低軟化
点のものを用いる場合、排出口３の排出筒４内で粉体が
固まって詰まってしまうおそれがあり、搬送管１内を搬
送される粉体を排出口３から排出することができなくな
るという問題があった。However, when a powder having high hygroscopicity or a low softening point such as a molding material is used as the powder to be conveyed, the powder is hardened in the discharge tube 4 of the discharge port 3. There is a risk that the powder may be clogged and the powder conveyed in the conveying pipe 1 cannot be discharged from the discharge port 3.
【０００５】本発明は上記の点に鑑みてなされたもので
あり、排出筒に詰まりが発生することなく排出口からの
排出を良好におこなうことができるスクリューコンベア
を提供することを目的とするものである。The present invention has been made in view of the above points, and an object of the present invention is to provide a screw conveyor capable of favorably discharging from a discharge port without causing clogging of a discharge cylinder. Is.
【０００６】[0006]
【課題を解決するための手段】本発明は、略水平に配設
される搬送管１内に搬送スクリュー２を設けて形成され
るスクリューコンベアにおいて、搬送管１の下部に排出
口３を設けると共に排出口３に下側程広がるラッパ状の
排出筒４を設け、上方へ回動されて排出筒４の下端の開
口部を閉塞し且つ下方へ回動されて排出筒４のこの開口
部を開口させるゲート板５を排出筒４の下側に取り付
け、ゲート板５が上方へ回動されて排出筒４の開口部を
閉塞したときに排出筒４内に差し込まれる櫛歯６をゲー
ト板５に突出させて設けて成ることを特徴とするもので
ある。DISCLOSURE OF THE INVENTION According to the present invention, in a screw conveyor in which a conveying screw 2 is provided in a conveying pipe 1 arranged substantially horizontally, a discharge port 3 is provided below the conveying pipe 1. The discharge port 3 is provided with a trumpet-shaped discharge tube 4 that spreads downward, and is rotated upward to close the opening at the lower end of the discharge tube 4 and rotated downward to open this opening of the discharge tube 4. The gate plate 5 is attached to the lower side of the discharge tube 4, and the comb teeth 6 inserted into the discharge tube 4 when the gate plate 5 is rotated upward to close the opening of the discharge tube 4 are attached to the gate plate 5. It is characterized in that it is provided so as to project.
【０００７】[0007]
【作用】排出筒４を下側程広がるラッパ状に形成するこ
とによって、排出筒４内に粉体が詰まり難くすることが
できると共に、ゲート板５を上方へ回動させて排出筒４
の開口部を閉塞したときに排出筒４内に差し込まれる櫛
歯６をゲート板５に突出させて設けてあるために、この
ゲート板５を下方へ回動させて排出筒４の下端の開口部
を開口させる際に排出筒４内の粉体は櫛歯６で掻き出さ
れるように作用を受けて排出される。By forming the discharge tube 4 in the shape of a trumpet that spreads toward the lower side, it is possible to prevent the discharge tube 4 from being easily clogged with powder, and also to rotate the gate plate 5 upward to cause the discharge tube 4 to rotate.
Since the comb teeth 6 that are inserted into the discharge tube 4 when the opening of the discharge tube 4 is closed are provided so as to project from the gate plate 5, the gate plate 5 is rotated downward to open the lower end of the discharge tube 4. When the portion is opened, the powder in the discharge tube 4 is discharged by being acted on by the comb teeth 6 so as to be scraped out.
【０００８】[0008]
【実施例】以下本発明を実施例によって詳述する。搬送
管１は長尺の中空筒で形成されるものであり、略水平方
向に配設されている。この搬送管１内にはほぼ全長に亘
って搬送スクリュー２が取り付けてある。搬送スクリュ
ー２は回転軸２１の回りにスパイラル羽根１１を設けて
形成されるものである。搬送管１には長手方向の数カ所
においてその下部に排出口３が開口させてあり、排出口
３には排出筒４が一体に下方へ突出して設けてある。こ
の排出筒４は図１に示すように、下側程内径が広がるラ
ッパ状に形成してあり、排出筒４の下端のフランジ１２
には上下に開口するゲート筒１３をその上端を固定して
取り付けてある。上記排出口３はその内径が搬送スクリ
ュー２のスパイラル羽根１１の直径（トラフ径）よりも
大きくなるように形成してある。EXAMPLES The present invention will be described in detail below with reference to examples. The carrier pipe 1 is formed of a long hollow cylinder, and is arranged in a substantially horizontal direction. A conveying screw 2 is installed in the conveying pipe 1 over substantially the entire length. The conveying screw 2 is formed by providing a spiral blade 11 around a rotating shaft 21. A discharge port 3 is opened in the lower portion of the transport pipe 1 at several positions in the longitudinal direction, and a discharge cylinder 4 is integrally provided in the discharge port 3 so as to project downward. As shown in FIG. 1, the discharge tube 4 is formed in a trumpet shape in which the inner diameter increases toward the lower side, and the flange 12 at the lower end of the discharge tube 4 is formed.
A gate cylinder 13 having an opening at the top and bottom is fixed to the upper end of the gate cylinder 13. The discharge port 3 is formed so that its inner diameter is larger than the diameter (trough diameter) of the spiral blade 11 of the conveying screw 2.
【０００９】ゲート筒１３の上端の開口部の周縁にはシ
ール筒片１４が全周に亘って設けてあり、またこのゲー
ト筒１３内にはゲート板５が取り付けてある。ゲート板
５は上面の中央部に複数本の櫛歯６を突設すると共に上
面の周囲にパッキン１５を設けて形成されるものであ
り、ゲート筒１３の内面に上下回動自在に基端部を枢支
したロッド１６の先端に固着してある。この複数本の櫛
歯６は中央部のもの程突出長が大きくなるように設けて
ある。またロッド１６はシリンダー装置１０によって上
下に回動されるようにしてあり、上方へ回動させること
によってゲート板５を上方へ回動させてゲート板５で排
出筒４の下端の開口部を閉塞すると共に、下方へ回動さ
せることによってゲート板５を下方へ回動させて排出筒
４の下端の開口部を開口させるようにしてある。このよ
うにゲート板５を上方へ回動させて排出筒４の下端の開
口部を閉塞すると、ゲート板５に突設した櫛歯６が排出
筒４内に差し込まれるようにしてあり、またゲート板５
のパッキン１５がシール筒片１４に密着して排出筒４の
開口部を密閉できるようにしてある。A seal cylinder piece 14 is provided all around the periphery of the opening at the upper end of the gate cylinder 13, and a gate plate 5 is mounted in the gate cylinder 13. The gate plate 5 is formed by protruding a plurality of comb teeth 6 in the central portion of the upper surface and by providing a packing 15 around the upper surface thereof. It is fixed to the tip of the rod 16 which pivotally supports. The plurality of comb teeth 6 are provided so that the protruding length becomes larger toward the central portion. The rod 16 is rotated vertically by the cylinder device 10. When the rod 16 is rotated upward, the gate plate 5 is rotated upward so that the gate plate 5 closes the opening at the lower end of the discharge tube 4. At the same time, the gate plate 5 is pivoted downward by pivoting it downward to open the opening at the lower end of the discharge tube 4. In this way, when the gate plate 5 is rotated upward to close the opening at the lower end of the discharge tube 4, the comb teeth 6 protruding from the gate plate 5 are inserted into the discharge tube 4, and Board 5
The packing 15 is closely attached to the seal tube piece 14 so that the opening of the discharge tube 4 can be sealed.
【００１０】搬送筒１の上部には排出口３の直上の位置
において点検口１７が開口して設けてあり、点検口１７
には点検口蓋１８が脱着自在に取り付けてある。そして
この点検口蓋１８には排出口３側へ向けて突出するよう
にエアーブローノズル１９が取り付けてある。またゲー
ト筒１３の側壁には下方へ回動させたときのゲート板５
に対向する位置においてゲート板５に向けて突出するよ
うにエアーブローノズル２０が突出して取り付けてあ
る。An inspection port 17 is opened at a position directly above the discharge port 3 on the upper portion of the transport cylinder 1.
An inspection lid 18 is detachably attached to the. An air blow nozzle 19 is attached to the inspection port lid 18 so as to project toward the discharge port 3 side. Further, the gate plate 5 is provided on the side wall of the gate cylinder 13 when the gate plate 5 is rotated downward.
The air blow nozzle 20 is attached so as to project toward the gate plate 5 at a position facing to.
【００１１】上記のように形成されるスクリューコンベ
アにあって、搬送スクリュー２を回転駆動させることに
よって搬送スクリュー２のスパイラル羽根１１で成形材
料等の粉体を搬送管１内を搬送することができる。そし
て排出口３から搬送管１内の粉体を排出するにあたって
図１の鎖線のようにゲート板５を下方へ回動させて排出
筒４の下端の開口部を開くと、ゲート板５の下方への回
動に伴って櫛歯６が排出筒４内から回動しつつ下方へ出
ることになり、この時の櫛歯６の回動軌跡で排出筒４内
の粉体が掻き出されることになる。従って排出筒４をゲ
ート板５で閉じているときにゲート板５の上において排
出筒４内に粉体が堆積して固まっても、櫛歯６によるこ
の掻き出しの作用で堆積した粉体が強制的に排出筒４か
ら排出されることになり、排出筒４内に粉体が詰まるこ
とを防ぐことができるものである。また排出筒４は下側
程広がるラッパ状に形成されているために、排出筒４の
内面に粉体が付着しにくく、下方へ落下し易くなり、こ
の点でも排出筒４内の詰まりを防ぐことができるもので
ある。また、上記のように、排出口３はその内径が搬送
スクリュー２のスパイラル羽根１１の直径（トラフ径）
よりも大きくなるように形成してあるために、粉体がス
パイラル羽根１１による作用で搬送管１内を送られる際
に、排出口３に落ちることなくオーバーランしてしまう
ようなことがなくなり、搬送管１内を送られる粉体を確
実に排出口３に落として排出することができるものであ
る。In the screw conveyor formed as described above, the powder such as the molding material can be conveyed in the conveying pipe 1 by the spiral blade 11 of the conveying screw 2 by rotationally driving the conveying screw 2. .. When the powder in the carrier pipe 1 is discharged from the discharge port 3, the gate plate 5 is rotated downward as shown by the chain line in FIG. When the comb teeth 6 are rotated, the comb teeth 6 are rotated out of the discharge cylinder 4 and come out downward. At this time, the powder in the discharge cylinder 4 is scraped out along the rotation locus of the comb teeth 6. become. Therefore, even if the powder is deposited and solidified in the discharge tube 4 on the gate plate 5 when the discharge tube 4 is closed by the gate plate 5, the accumulated powder is forced by the scraping action of the comb teeth 6. Thus, the powder is effectively discharged from the discharge cylinder 4, and it is possible to prevent the powder from clogging the discharge cylinder 4. Further, since the discharge tube 4 is formed in a trumpet shape that spreads toward the lower side, it is difficult for the powder to adhere to the inner surface of the discharge tube 4 and the powder easily falls downward. Is something that can be done. Further, as described above, the inner diameter of the discharge port 3 is the diameter (trough diameter) of the spiral blade 11 of the conveying screw 2.
Since it is formed so as to be larger than the above, when the powder is sent through the conveying pipe 1 by the action of the spiral blade 11, it does not overrun without falling into the discharge port 3. The powder sent through the carrier pipe 1 can be reliably dropped into the discharge port 3 and discharged.
【００１２】さらに、上記のようにゲート板５を下方へ
回動させて排出筒４の下端の開口部を開いた際に、上方
のエアーブローノズル１９から排出口３側に高圧のエア
ーが数秒間吹き付けられ、排出筒４内の粉体をエアー圧
で強制的に排出できるようにしてある。また、ゲート板
５を図１（ａ）の鎖線のように下方へ回動させた際に、
ゲート筒１３に取り付けたエアーブローノズル２０から
ゲート板５に高圧のエアーが数秒間吹き付けられ、櫛歯
６の間に詰まった粉体や、パッキン１５の表面に付着し
た粉体を吹き飛ばして除去できるようにしてある。これ
らのエアーブローノズル１９，２０はゲート板５による
開閉動作前に数秒間作動させるようにしてもよい。Further, when the gate plate 5 is rotated downward to open the opening at the lower end of the discharge tube 4 as described above, high-pressure air flows from the upper air blow nozzle 19 to the discharge port 3 side. It is sprayed for a second and the powder in the discharge tube 4 can be forcibly discharged by air pressure. In addition, when the gate plate 5 is rotated downward as shown by the chain line in FIG.
High-pressure air is blown onto the gate plate 5 from the air blow nozzle 20 attached to the gate cylinder 13 for several seconds, and the powder clogging between the comb teeth 6 and the powder adhering to the surface of the packing 15 can be blown off and removed. Is done. These air blow nozzles 19 and 20 may be operated for several seconds before the opening / closing operation by the gate plate 5.
【００１３】[0013]
【発明の効果】上記のように本発明は、搬送管の下部に
排出口を設けると共に排出口に下側程広がるラッパ状の
排出筒を設けるようにしたので、下側程広がるラッパ状
の排出筒には粉体が付着し難く粉体の詰まりを起こり難
くすることができるものであり、また、上方へ回動され
て排出筒の下端の開口部を閉塞し且つ下方へ回動されて
排出筒のこの開口部を開口させるゲート板を排出筒の下
側に取り付け、ゲート板が上方へ回動されて排出筒の開
口部を閉塞したときに排出筒内に差し込まれる櫛歯をゲ
ート板に突出させて設けるようにしたので、ゲート板を
下方へ回動させて排出筒の開口部を開くとゲート板の下
方への回動に伴って櫛歯が排出筒内から回動しつつ下方
に出て、櫛歯で排出筒内の粉体が掻き出されることにな
り、排出筒内に粉体が詰まることを防ぐことができるも
のである。As described above, according to the present invention, since the discharge port is provided in the lower portion of the conveying pipe and the trumpet-shaped discharge tube which spreads downwardly is provided at the discharge port, the trumpet-shaped discharge which spreads downwardly. It is possible to prevent powder from adhering to the cylinder and to prevent clogging of the powder. It is also possible to rotate upward to close the opening at the lower end of the discharge cylinder and rotate downward to discharge. The gate plate that opens this opening of the cylinder is attached to the lower side of the discharge cylinder, and the comb tooth inserted into the discharge cylinder when the gate plate is rotated upward to close the opening of the discharge cylinder is used as the gate plate. Since it is provided so as to project, when the gate plate is rotated downward to open the opening of the discharge cylinder, the comb teeth are rotated downward from the discharge cylinder as the gate plate is rotated downward. Then, the powder in the discharge tube will be scraped out by the comb teeth, One in which it is possible to prevent the clogging.
【図１】本発明の一実施例を示すものであり、（ａ）は
正面断面図、（ｂ）は側面断面図である。1A and 1B show an embodiment of the present invention, in which FIG. 1A is a front sectional view and FIG. 1B is a side sectional view.
【図２】従来例を示すものであり、（ａ），（ｂ），
（ｃ）はそれぞれ各態様を示す断面図である。FIG. 2 shows a conventional example, and includes (a), (b),
(C) is sectional drawing which shows each aspect.
１ 搬送管 ２ 搬送スクリュー ３ 搬出口 ４ 排出筒 ５ ゲート板 ６ 櫛歯 1 Conveyor Pipe 2 Conveyor Screw 3 Carry Out Port 4 Discharge Tube 5 Gate Plate 6 Comb Teeth
─────────────────────────────────────────────────────
─────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成３年９月３０日[Submission date] September 30, 1991
【手続補正１】[Procedure Amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００１２[Correction target item name] 0012
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００１２】さらに、上記のようにゲート板５を下方へ
回動させて排出筒４の下端の開口部を開いた際に、上方
のエアーブローノズル１９から排出口３側に高圧のエア
ーが数秒間吹き付けられ、排出筒４内の粉体をエアー圧
で強制的に排出できるようにしてある。また、ゲート板
５を図１（ａ）の鎖線のように下方へ回動させた際に、
ゲート筒１３に取り付けたエアーブローノズル２０から
ゲート板５に高圧のエアーが数秒間吹き付けられ、櫛歯
６の間に詰まった粉体や、パッキン１５の表面に付着し
た粉体を吹き飛ばして除去できるようにしてある。これ
らのエアーブローノズル１９，２０はゲート板５による
開動作後、閉動作前に数秒間作動させるようにしてもよ
い。Further, when the gate plate 5 is rotated downward to open the opening at the lower end of the discharge tube 4 as described above, high-pressure air flows from the upper air blow nozzle 19 to the discharge port 3 side. It is sprayed for a second and the powder in the discharge tube 4 can be forcibly discharged by air pressure. In addition, when the gate plate 5 is rotated downward as shown by the chain line in FIG.
High-pressure air is blown onto the gate plate 5 from the air blow nozzle 20 attached to the gate cylinder 13 for several seconds, and the powder clogging between the comb teeth 6 and the powder adhering to the surface of the packing 15 can be blown off and removed. Is done. These air blow nozzles 19 and 20 depend on the gate plate 5.
After the opening operation, it may be operated for several seconds before the closing operation .
Claims (1)
リューを設けて形成されるスクリューコンベアにおい
て、搬送管の下部に排出口を設けると共に排出口に下側
程広がるラッパ状の排出筒を設け、上方へ回動されて排
出筒の下端の開口部を閉塞し且つ下方へ回動されて排出
筒のこの開口部を開口させるゲート板を排出筒の下側に
取り付け、ゲート板が上方へ回動されて排出筒の開口部
を閉塞したときに排出筒内に差し込まれる櫛歯をゲート
板に突出させて設けて成ることを特徴とするスクリュー
コンベア。1. In a screw conveyor formed by providing a conveying screw in a conveying pipe arranged substantially horizontally, a discharge port is provided at a lower part of the conveying pipe, and a trumpet-like discharging pipe that spreads downward to the discharging port is provided. A gate plate that is provided and is rotated upward to close the opening at the lower end of the discharge tube and is rotated downward to open this opening of the discharge tube is attached to the lower side of the discharge tube, and the gate plate is moved upward. A screw conveyor, characterized in that the gate plate is provided with comb teeth that are inserted into the discharge tube when the opening is closed by rotating the discharge tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20311791A JPH0543031A (en) | 1991-08-14 | 1991-08-14 | Screw conveyor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20311791A JPH0543031A (en) | 1991-08-14 | 1991-08-14 | Screw conveyor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0543031A true JPH0543031A (en) | 1993-02-23 |
Family
ID=16468686
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20311791A Withdrawn JPH0543031A (en) | 1991-08-14 | 1991-08-14 | Screw conveyor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0543031A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7455343B2 (en) | 2005-09-12 | 2008-11-25 | Ts Tech Co., Ltd. | Passenger's weight measurement device for vehicle seat and attachment structure for load sensor |
| US8051941B2 (en) | 2005-09-30 | 2011-11-08 | Ts Tech Co., Ltd. | Passenger's weight measurement device for vehicle seat |
| US8281714B2 (en) | 2005-10-28 | 2012-10-09 | Komatsu Industries Corporation | Fume disposal process and fume disposal system |
| JP2012201465A (en) * | 2011-03-25 | 2012-10-22 | Anritsu Sanki System Co Ltd | Sorting device |
| CN110406914A (en) * | 2019-08-28 | 2019-11-05 | 湖北天宜机械股份有限公司 | Screw conveyor failure automatic repariring equipment and method |
-
1991
- 1991-08-14 JP JP20311791A patent/JPH0543031A/en not_active Withdrawn
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7455343B2 (en) | 2005-09-12 | 2008-11-25 | Ts Tech Co., Ltd. | Passenger's weight measurement device for vehicle seat and attachment structure for load sensor |
| US7823951B2 (en) | 2005-09-12 | 2010-11-02 | Ts Tech Co., Ltd. | Passenger's weight measurement device for vehicle seat and attachment structure for load sensor |
| US8051941B2 (en) | 2005-09-30 | 2011-11-08 | Ts Tech Co., Ltd. | Passenger's weight measurement device for vehicle seat |
| US8281714B2 (en) | 2005-10-28 | 2012-10-09 | Komatsu Industries Corporation | Fume disposal process and fume disposal system |
| JP2012201465A (en) * | 2011-03-25 | 2012-10-22 | Anritsu Sanki System Co Ltd | Sorting device |
| CN110406914A (en) * | 2019-08-28 | 2019-11-05 | 湖北天宜机械股份有限公司 | Screw conveyor failure automatic repariring equipment and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 19981112 |