JP2552543Y2 - Water stop device for screw conveyor - Google Patents
Water stop device for screw conveyorInfo
- Publication number
- JP2552543Y2 JP2552543Y2 JP1990058771U JP5877190U JP2552543Y2 JP 2552543 Y2 JP2552543 Y2 JP 2552543Y2 JP 1990058771 U JP1990058771 U JP 1990058771U JP 5877190 U JP5877190 U JP 5877190U JP 2552543 Y2 JP2552543 Y2 JP 2552543Y2
- Authority
- JP
- Japan
- Prior art keywords
- screw conveyor
- earth
- ball valve
- chamber
- sand
- 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.)
- Expired - Lifetime
Links
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
- Screw Conveyors (AREA)
Description
【考案の詳細な説明】 （産業上の利用分野） 本考案は、シールド掘削機のスクリュコンベア等の土
砂、粒体、粉体等の輸送に使用するスクリュコンベアに
適用される排土装置に関する。DETAILED DESCRIPTION OF THE INVENTION (Industrial application field) The present invention relates to an earth discharging device applied to a screw conveyor used for transporting earth and sand, granules, powders, etc. such as a screw conveyor of a shield excavator.
（従来の技術） 第２図及び第３図に示すシールド掘削機22を例に従来
の技術を説明する。シールド掘削機22の土砂搬送装置で
あり、スクリュ駆動モータ19により回転させられるスク
リュ軸１に螺旋翼を取付け、ケーシング２によって囲繞
された、スクリュコンベア３において、地盤の水圧が高
い場合には、カッタチャンバ24、スクリュコンベア３を
経て、スクリュコンベア３の排土口５においても高水圧
が作用する。そこでスクリュコンベア３内の被圧水を止
水しながら、掘削土砂を排出する目的で、第４図に示す
ように、ケーシング７に内蔵され、軸受14、軸９によっ
て軸支され、一方の軸端にボールバルブ駆動モータ15が
連結されたボールバルブ６を用いたロータリバルブ式止
水装置Ａをスクリュコンベア３の排土口５に連設する場
合が多い。なおボールバルブ６には土砂18を収容する円
筒状のチャンバ17を穿設してある。(Prior Art) The prior art will be described by taking the shield excavator 22 shown in FIGS. 2 and 3 as an example. A screw conveyer of a shield excavator 22 in which screw wings are attached to a screw shaft 1 rotated by a screw drive motor 19, and a screw conveyor 3 surrounded by a casing 2 is provided with a cutter when the water pressure of the ground is high. High water pressure acts on the discharge port 5 of the screw conveyor 3 via the chamber 24 and the screw conveyor 3. In order to discharge the excavated earth and sand while stopping the pressurized water in the screw conveyor 3, as shown in FIG. 4, it is built in the casing 7 and is supported by the bearing 14 and the shaft 9. In many cases, a rotary valve type water stopping device A using a ball valve 6 having a ball valve driving motor 15 connected to an end thereof is connected to the discharge port 5 of the screw conveyor 3 in many cases. The ball valve 6 is provided with a cylindrical chamber 17 for storing earth and sand 18.
第４図および第５図は従来のロータリバルブの作用状
況を示すものである。FIGS. 4 and 5 show the operation of the conventional rotary valve.
第４図は、スクリュコンベア３内の土砂がボールバル
ブ６内のチャンバ17に充填された状態を示す。FIG. 4 shows a state in which the earth and sand in the screw conveyor 3 is filled in the chamber 17 in the ball valve 6.
第５図は、ボールバルブ６が軸９廻りに第４図の状態
から1/2回転し、チャンバ17の開口部が下向きになった
状態を示す。このとき、チャンバ17内の土砂18は自重に
よって落下する。FIG. 5 shows a state in which the ball valve 6 has been rotated around the axis 9 by 1/2 of the state shown in FIG. 4, and the opening of the chamber 17 has been turned downward. At this time, the earth and sand 18 in the chamber 17 falls by its own weight.
以上ボールバルブ６の回転運動によって第４図第５
図の作用が繰り返され、止水状態を維持しながら排土が
行われる。The rotation of the ball valve 6 as shown in FIG.
The operation shown in the figure is repeated, and the soil is discharged while maintaining the water stopping state.
（考案が解決しようとする課題） 従来のロータリバルブは、チャンバの形状が円筒状で
あり、土砂の自重によって排出が行われていたため、チ
ャンバ開口部が下方を向いたときにもチャンバ内の壁面
等に土砂が付着して、土砂が全て排出されず、排土効率
が低かった。(Problems to be Solved by the Invention) In the conventional rotary valve, the chamber has a cylindrical shape, and the discharge is performed by its own weight of the earth and sand. The earth and sand adhered to the ground, etc., and all the earth and sand was not discharged, and the soil discharging efficiency was low.
（課題を解決するための手段） ボールバルブに複数のチャンバを前記ボールバルブの
回転軸に対して対称に設け、各チャンバを流路にて連通
する。(Means for Solving the Problems) A plurality of chambers are provided in a ball valve symmetrically with respect to the rotation axis of the ball valve, and the chambers communicate with each other through a flow path.
（作用） 排土側のチャンバ内の土砂は、流路により受土側の加
圧水により排土が促進される。(Operation) The earth and sand in the chamber on the earth discharging side are promoted by the pressurized water on the earth receiving side by the flow path.
尚、被圧水は、流露の径を適切なものとすれば、被圧
水が流路を通過する際の配管抵抗により多量に流れるこ
とはなく、特にボールバルブを90°回転させれば完全に
止水させることができる。The pressurized water does not flow in large quantities due to the pipe resistance when the pressurized water passes through the flow path, provided that the diameter of the dew is appropriate. Water can be stopped.
（実施例） 第１図は本考案の実施例を示すものである。ボールバ
ルブ６内には複数のチャンバ17があり、回転軸に対して
対称位置にある各チャンバは、流路21によって連通して
いる。(Embodiment) FIG. 1 shows an embodiment of the present invention. A plurality of chambers 17 are provided in the ball valve 6, and the respective chambers located at symmetric positions with respect to the rotation axis are connected by a flow path 21.
通常スクリュコンベアの止水装置として、ボールバル
ブ６を設置する様な施工現場においては、スクリュコン
ベア３内に水圧が作用しているため、第１図に示す状態
では、土砂18の積込み状態にあるチャンバ17-aより流路
21を経て、排土状態にあるチャンバ17-bの壁面に設けら
れた噴流口16に圧力水が流れ、同噴流口16より噴流が発
生する。この作用により、チャンバ17-b内の土砂18を効
率的に排土することができる。なお、流路21内には、交
番にて両方向の水流が発生するため、目詰りや閉塞等が
生じにくい。In a construction site where a ball valve 6 is usually installed as a water stop device for a screw conveyor, water pressure acts on the screw conveyor 3, so that in the state shown in FIG. Flow path from chamber 17-a
After passing through 21, the pressure water flows into the jet port 16 provided on the wall surface of the chamber 17-b in the earth discharging state, and a jet is generated from the jet port 16. By this operation, the earth and sand 18 in the chamber 17-b can be efficiently discharged. In addition, since water flows in the flow path 21 in both directions in an alternating manner, clogging, blockage, and the like hardly occur.
また、実施例では、流路21、噴射口16を複数設置し、
より実効をあげることが可能である。In the embodiment, a plurality of flow paths 21 and injection ports 16 are provided,
It is possible to be more effective.
（考案の効果） 本考案は、スクリュコンベアの土砂排出口に設置した
ロータリバルブ式止水装置において、ボールバルブに複
数のチャンバを同ボールバルブの回転軸に対して対称に
設け、各チャンバを流路で連通したので、この流路を経
てボールバルブのチャンバ壁面に設けた小孔より、加圧
状態の流体をチャンバ内に噴射することにより、簡単な
構造で前記ボールバルブ（チャンバ）内の土砂が効率的
に排出され、チャンバ壁面への土砂付着が抑止される。(Effects of the Invention) In the present invention, in a rotary valve type water stop device installed at the earth and sand discharge port of a screw conveyor, a plurality of chambers are provided in a ball valve symmetrically with respect to the rotation axis of the ball valve, and each chamber flows. Since the fluid is communicated through the passage, the fluid in a pressurized state is injected into the chamber through a small hole provided in the chamber wall of the ball valve through the passage, so that the earth and sand in the ball valve (chamber) can be easily formed. Is efficiently discharged, and adhesion of sediment to the chamber wall is suppressed.
また、スクリュコンベア排土口の止水と土砂の排出が
効率的、連続的に行われる。In addition, the water stop at the screw conveyor discharge port and the discharge of earth and sand are performed efficiently and continuously.
第１図は本考案の実施例に係るスクリュコンベアの止水
装置における土砂排出時の断面図、第２図はシールド掘
削機の概念図、第３図は同上のロータリバルブの斜視
図、第４図は従来のロータリバルブにおける閉鎖時の断
面図、第５図は同上の土砂排出時の断面図である。 ３……スクリュコンベア、５……排土口、６……ボール
バルブ、17……チャンバ、18……土砂。FIG. 1 is a cross-sectional view of a screw conveyor according to an embodiment of the present invention at the time of discharging sediment in a water stopping device, FIG. 2 is a conceptual diagram of a shield excavator, FIG. 3 is a perspective view of a rotary valve of the same, FIG. FIG. 5 is a cross-sectional view of a conventional rotary valve when it is closed, and FIG. 5 is a cross-sectional view of the same when soil and sand are discharged. 3 ... screw conveyor, 5 ... discharge port, 6 ... ball valve, 17 ... chamber, 18 ... earth and sand.
Claims (1)
ロータリバルブ式止水装置において、止水装置を形成す
るボールバルブに複数のチャンバを、同ボールバルブの
回転軸に対して対称に設け、各チャンバを流路にて連通
したことを特徴とするスクリュコンベアの止水装置。In a rotary valve type water stopping device installed at a soil discharge port of a screw conveyor, a plurality of chambers are provided symmetrically with respect to a rotation axis of the ball valve forming a water stopping device. A water stop device for a screw conveyor, wherein chambers are communicated by a flow path.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990058771U JP2552543Y2 (en) | 1990-06-05 | 1990-06-05 | Water stop device for screw conveyor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990058771U JP2552543Y2 (en) | 1990-06-05 | 1990-06-05 | Water stop device for screw conveyor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0417496U JPH0417496U (en) | 1992-02-13 |
| JP2552543Y2 true JP2552543Y2 (en) | 1997-10-29 |
Family
ID=31584685
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990058771U Expired - Lifetime JP2552543Y2 (en) | 1990-06-05 | 1990-06-05 | Water stop device for screw conveyor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2552543Y2 (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5835759U (en) * | 1981-08-31 | 1983-03-08 | 松下電工株式会社 | Horikotatsu |
| JPS58185693U (en) * | 1982-06-04 | 1983-12-09 | 日立建機株式会社 | Rotary unloading device for shield excavator |
-
1990
- 1990-06-05 JP JP1990058771U patent/JP2552543Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0417496U (en) | 1992-02-13 |
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