JP2001046816A5

JP2001046816A5 -

Info

Publication number: JP2001046816A5
Application number: JP1999228162A
Authority: JP
Filing date: 1999-08-12
Publication date: 2006-04-06
Anticipated expiration: 2019-08-12

Description

【特許請求の範囲】
【請求項１】容器の中に、上流側の入口流路と、下流側の出口流路と、両流路の間に張設され且つ該容器の内面に沿って流れ方向に滑動するスクリーンと、該スクリーンの上流側に異物排出口とを備え、該スクリーンが、駆動軸を介した駆動装置によって、上流向き方向には緩やかに、下流向き方向には急速に駆動される濾過装置において、
該入口流路には下流向きの流れのみを許し逆流を許さない入口逆止弁が設けられ、該出口流路には出口開閉弁が設けられ、該スクリーンと該異物排出口の間には該スクリーンと連動して該容器の内面に沿って滑動する隔板が設けられて、該隔板と該異物排出口との間に異物滞留室が形成され、該隔板上には該スクリーンから該異物滞留室に向かう流れのみを許し逆流を許さない異物逆止弁が設けられ、該異物滞留室と該入口逆止弁の上流側とが連通路によって連通されたことを特徴とする濾過装置。
【請求項２】前記連通路中に補助スクリーンが介設されたことを特徴とする、請求項１に記載の濾過装置。
【請求項３】前記出口開閉弁が、前記駆動軸の上流向き方向の作動行程の最初の一部区間において前記駆動軸と連動作動して弁閉鎖し、又、前記駆動軸の下流向き方向の作動行程の終末の一部区間において前記駆動軸と連動作動して開弁し、それら以外の区間においては前記駆動軸の作動と干渉しない構造に構成されたことを特徴とする、請求項１又は２に記載の濾過装置。 [Claims]
1. An inlet flow path on the upstream side, an outlet flow path on the downstream side, and a screen stretched between both flow paths and sliding in the flow direction along the inner surface of the container in the container. In a filtration device provided with a foreign matter discharge port on the upstream side of the screen, the screen is driven gently in the upstream direction and rapidly in the downstream direction by a drive device via a drive shaft.
The inlet flow path is provided with an inlet check valve that allows only downstream flow and does not allow backflow, the outlet flow path is provided with an outlet on-off valve, and the screen and the foreign matter discharge port are provided with the outlet check valve. A diaphragm that slides along the inner surface of the container in conjunction with the screen is provided, a foreign matter retention chamber is formed between the gap plate and the foreign matter discharge port, and the foreign matter retention chamber is formed on the diaphragm from the screen. A filtration device provided with a foreign matter check valve that allows only the flow toward the foreign matter retention chamber and does not allow backflow, and the foreign matter retention chamber and the upstream side of the inlet check valve are communicated by a communication passage.
2. The filtration device according to claim 1, wherein an auxiliary screen is provided in the communication passage.
3. The outlet on-off valve operates in conjunction with the drive shaft in the first part of the operation stroke in the upstream direction of the drive shaft to close the valve, and also at the end of the operation stroke in the downstream direction of the drive shaft. In some sections, the valve is opened by interlocking with the drive shaft, and in other sections, the structure does not interfere with the operation of the drive shaft.The filtration device according to claim 1 or 2, wherein the filtration device is configured.

本発明においては、前記連通路中に補助スクリーンが介設されてもよい。 In the present invention, an auxiliary screen may be provided in the communication passage .

又、前記出口開閉弁が、前記駆動軸の上流向き方向の作動行程の最初の一部区間において前記駆動軸と連動作動して弁閉鎖し、又、前記駆動軸の下流向き方向の作動行程の終末の一部区間において前記駆動軸と連動作動して開弁し、それら以外の区間においては前記駆動軸の作動と干渉しない構造に構成されてもよい。 Further, the outlet on-off valve operates in conjunction with the drive shaft in the first partial section of the operation stroke in the upstream direction of the drive shaft to close the valve, and also operates in the downstream direction of the drive shaft. The valve may be opened by interlocking with the drive shaft in a part of the terminal section, and may be configured so as not to interfere with the operation of the drive shaft in other sections.