JP2001205021A - Fail-safe mechanism of high pressure filter - Google Patents
Fail-safe mechanism of high pressure filterInfo
- Publication number
- JP2001205021A JP2001205021A JP2000019921A JP2000019921A JP2001205021A JP 2001205021 A JP2001205021 A JP 2001205021A JP 2000019921 A JP2000019921 A JP 2000019921A JP 2000019921 A JP2000019921 A JP 2000019921A JP 2001205021 A JP2001205021 A JP 2001205021A
- Authority
- JP
- Japan
- Prior art keywords
- filter
- pressure
- filter element
- fail
- circuit
- 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- Withdrawn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
- Fluid-Pressure Circuits (AREA)
- Filtration Of Liquid (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、高圧フィルタ、特
に高圧のオイルフィルタ等の目詰まり時におけるフェイ
ルセーフ機構に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fail-safe mechanism when a high-pressure filter, particularly a high-pressure oil filter, is clogged.
【０００２】[0002]
【従来の技術】例えば、比較的高圧の油圧回路を使用す
る工作機構の一例として、最近の数値制御式パンチプレ
ス機等が挙げられる。2. Description of the Related Art As an example of a machine mechanism using a relatively high-pressure hydraulic circuit, there is a recent numerically controlled punch press machine or the like.
【０００３】その全体油圧回路の詳細は省略するが、図
２にその油圧発生回路の一例の要部概要図を示す。Although the details of the entire hydraulic circuit are omitted, FIG. 2 shows a schematic diagram of an essential part of an example of the hydraulic pressure generating circuit.
【０００４】１１は作動用のオイルリザーバ（タン
ク）、１２は電気モータＭ駆動の油圧ポン、１３はオイ
ルフィルタ（以下、単に“フィルタ”）、１４は操作バ
ルブ（方向弁）、１５は油圧シリンダ、１６はピストン
をそれぞれ示す。[0004] Reference numeral 11 denotes an oil reservoir (tank) for operation, 12 denotes a hydraulic pump driven by an electric motor M, 13 denotes an oil filter (hereinafter simply referred to as "filter"), 14 denotes an operation valve (directional valve), and 15 denotes a hydraulic cylinder. , 16 indicate pistons, respectively.
【０００５】フィルタ１３は、ポンプ１２の直後に設け
られて、回路を循環するオイル中のゴミ等の汚染物の流
通を防止する保全機能を有している。[0005] The filter 13 is provided immediately after the pump 12 and has a maintenance function of preventing the flow of contaminants such as dust in oil circulating in the circuit.
【０００６】[0006]
【発明が解決しようとする課題】然し乍ら、現状の差し
込み式フィルタにおいては、フィルタが長時間の使用に
より目詰まりを生じ、不図示のリレーフ弁等が故障して
いた場合には、サージ圧によりフィルタ内圧力が上昇
し、オイル通路を閉塞してしまうため、フィルタには大
きい圧力差を生じて、フィルタエレメントを破損させて
しまう危険性があった。However, in the current plug-in type filter, if the filter is clogged by using the filter for a long time and a relay valve (not shown) is broken down, the filter is operated by surge pressure. Since the internal pressure increases and closes the oil passage, there is a risk that a large pressure difference occurs in the filter and the filter element is damaged.
【０００７】このため、破損したフィルタエレメントの
破片等が油圧回路内の安全弁等に侵入して、回路部材を
閉塞／破損させる可能性があった。[0007] For this reason, there is a possibility that broken pieces of the filter element or the like may enter a safety valve or the like in the hydraulic circuit to close / break the circuit member.
【０００８】本発明は以上のような局面に鑑みてなされ
たもので、フィルタが目詰まりを生じ、さらに圧力リレ
ーズ弁や圧力スイッチ等が故障の場合にも油圧回路をフ
ェイルセーフ的に保護するための機構手段の提供を目的
としている。SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and is intended to provide a fail-safe protection of a hydraulic circuit even when a filter is clogged and a pressure relay valve, a pressure switch, and the like fail. The purpose is to provide the mechanism means.
【０００９】[0009]
【課題を解決するための手段】このため、本発明におい
は、以下の各項（１）〜（３）のいずれかに示す高圧フ
ィルタのフェイルセーフ機構の提供により前記目的を達
成しようとするものである。Therefore, in the present invention, the above object is achieved by providing a fail-safe mechanism for a high-pressure filter described in any of the following items (1) to (3). It is.
【００１０】（１）圧力流体回路に使用する媒体流体濾
過用フィルタ手段において、前記フィルタのケース部材
と、フィルタエレメント部材間に、このフィルタエレメ
ントに作用する差圧力によりこのエレメントが移動して
前記媒体液体の流通を閉塞する方向に対抗する方向に付
勢された弾性手段を設けると共に、所定の前記エレメン
ト移動量を検知するための検知手段を設けたことを特徴
とする高圧フィルタのフィルタのフェイルセーフ機構。(1) In a filter means for filtering a medium fluid used in a pressure fluid circuit, the element moves between a case member of the filter and a filter element member due to a differential pressure acting on the filter element. A fail-safe filter for a high-pressure filter, comprising: elastic means biased in a direction opposite to a direction in which the flow of liquid is blocked; and detecting means for detecting a predetermined amount of movement of the element. mechanism.
【００１１】（２）前記圧力流体回路は、油圧流体回路
であることを特徴とする前項（１）記載の高圧フィルタ
のフェイルセーフ機構。(2) The fail-safe mechanism for a high-pressure filter according to the above (1), wherein the pressure fluid circuit is a hydraulic fluid circuit.
【００１２】（３）前記油圧流体回路は、パンチプレス
の油圧流体回路であることを特徴とする前項（２）記載
の高圧フィルタのフェイルセーフ機構。(3) The fail-safe mechanism for a high-pressure filter according to the item (2), wherein the hydraulic fluid circuit is a hydraulic fluid circuit of a punch press.
【００１３】[0013]
【作用】以上のような本発明構成により、比較的高圧の
油圧回路内等のフィルタエレメントが目詰まりを生じ、
また、さらに、差圧スイッチや安全弁等が故障している
場合においても、フィルタのオイル通路が完全に閉塞さ
れることがないため、破損等に継がる大きな差圧が発生
する可能性をフェイルセーフ的に防止することができ
る。According to the structure of the present invention as described above, filter elements in a relatively high-pressure hydraulic circuit and the like are clogged,
Furthermore, even when the differential pressure switch, the safety valve, or the like is out of order, the oil passage of the filter is not completely blocked, so that the possibility of generating a large differential pressure leading to breakage or the like is reduced. Can be prevented.
【００１４】[0014]
【発明の実施の形態】以下に本発明の形態を、一実施例
に基づき、図面を参照して詳細に説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail based on an embodiment with reference to the drawings.
【００１５】[0015]
【実施例】（構成）図１に、本発明に係る実施例の高圧
フィルタのフェイルセーフ機構の断面概要図を示す。FIG. 1 is a schematic sectional view of a fail-safe mechanism of a high-pressure filter according to an embodiment of the present invention.
【００１６】図１において、１は高圧オイルフィルタ
（図２におけるオイルフィルタ１３と同じものであ
る）、２はフィルタケース、３は多孔筒、４は多数の折
り目（襞）より成るフィルタエレメントを示す。In FIG. 1, 1 is a high-pressure oil filter (the same as the oil filter 13 in FIG. 2), 2 is a filter case, 3 is a perforated cylinder, and 4 is a filter element composed of a number of folds (folds). .
【００１７】本発明実施例の特徴は、フィルタエレメン
ト４の頂縁部と、フィルタケース２の頂部内壁面との間
に圧縮コイルばね５を設けて、フィルタエレメント４を
常時、ケース底面に圧接偏倚させると共に、フィルタケ
ース２の頂部中心部に絶縁体６を貫いてキャパシターを
介して接地されたリード線７を有し、フィルタエレメン
ト４がばね５の圧縮力に抗して上昇した時に、その上昇
を検知するためのタッチセンサ８を備えたことにある。A feature of the embodiment of the present invention is that a compression coil spring 5 is provided between the top edge of the filter element 4 and the inner wall surface of the top of the filter case 2 so that the filter element 4 is constantly biased against the bottom of the case. In addition, the filter case 2 has a lead wire 7 that is grounded through a capacitor at the center of the top of the filter case 2 and that is connected to a ground through a capacitor. The touch sensor 8 for detecting the
【００１８】（動作）稼働時間の長期化等により、フィ
ルタエレメント４が目詰まりを生じて、差圧が発生して
来ると、従来はフィルタエレメント４内の圧力が上昇し
てフィルタケース４内面と接触するため、オイルの通路
が閉塞されて大きな差圧が発生し、エレメント４が破壊
して油圧回路内の安全弁等に侵入して、異常発生の原因
となる可能性があったが、これに対して本発明実施例に
よれば、大きな差圧発生と共に、譬え、不図示の差圧ス
イッチ或は安全弁等に異常があっても、フィルタエレメ
ント４が圧縮コイルばね５に抗して上昇してきた時、タ
ッチセンサ８に接触して検知されてその上昇を停止させ
ることができる。(Operation) When the filter element 4 is clogged due to a prolonged operation time or the like, and a differential pressure is generated, the pressure in the filter element 4 is conventionally increased and the inner surface of the filter case 4 is removed. Because of the contact, the oil passage was blocked and a large differential pressure was generated, and the element 4 was destroyed and penetrated into a safety valve or the like in the hydraulic circuit, possibly causing an abnormality. On the other hand, according to the embodiment of the present invention, the filter element 4 rises against the compression coil spring 5 with the occurrence of a large differential pressure, even if there is an abnormality in the differential pressure switch or the safety valve (not shown). At this time, the contact can be detected by touching the touch sensor 8 and the ascent can be stopped.
【００１９】この時点では、フィルタエレメント４は未
だフィルタケース２の内面に当接していないため、オイ
ルパス経路は未だ閉塞されておらず、これ以上大きな差
圧を生ずることが防止され、仮に前記のような安全弁等
の異常等があっても従来のように大きな事故に継ながる
危険がフェイルセーフ的に防止される。At this time, since the filter element 4 has not yet come into contact with the inner surface of the filter case 2, the oil path has not yet been closed, and it is possible to prevent a larger differential pressure from occurring. Even if there is such an abnormality in the safety valve or the like, the risk of leading to a large accident as in the related art is prevented in a fail-safe manner.
【００２０】（他の実施例）なお、前記圧縮コイルばね
５やタッチセンサ８等の構成は、これのみに限定される
ことなく、同様の機能を有する他の形式であっても差し
支えない。(Other Embodiments) The configurations of the compression coil spring 5, the touch sensor 8, and the like are not limited to these, and other types having the same function may be used.
【００２１】また、前記実施例においては、油圧回路の
事例について説明したが、本発明原理は水圧や空気圧等
の流体圧力回路にも適用し得ることは勿論である。In the above embodiment, the case of the hydraulic circuit has been described, but the principle of the present invention can of course be applied to a fluid pressure circuit such as a water pressure or an air pressure.
【００２２】[0022]
【発明の効果】以上説明したように、本発明によれば、
例えば、比較的高圧の油圧回路内等のフィルタエレメン
トが目詰まりを生じ、またさらに、差圧スイッチ等が故
障した場合においても、フィルタ内のオイル通路が完全
に閉塞されることがないため、破損に継ながる大きな差
圧を発生することをフェイルセーフ的に防止することが
できる。As described above, according to the present invention,
For example, even if a filter element in a relatively high-pressure hydraulic circuit or the like is clogged, and furthermore, even if a differential pressure switch or the like fails, the oil passage in the filter is not completely blocked, so that the filter is damaged. The generation of a large differential pressure leading to the following can be prevented in a fail-safe manner.
【図１】 実施例の高圧フィルタのフェイルセーフ機構
の断面概要図FIG. 1 is a schematic cross-sectional view of a fail-safe mechanism of a high-pressure filter according to an embodiment.
【図２】 従来の油圧発生回路の一例の要部概要図FIG. 2 is a schematic diagram of a main part of an example of a conventional hydraulic pressure generation circuit.
１ 高圧オイルフィルタ ２ フィルタケース ３ 多孔筒 ４ フィルタエレメント ５ 圧縮コイルばね ６ 絶縁体 ７ リード線 ８ タッチセンサ ９ オイルパス １１ オイルリザーバ（タンク） １２ 油圧ポンプ １３ フィルタ １４ 操作バルブ １５ 油圧シリンダ １６ ピストン DESCRIPTION OF SYMBOLS 1 High-pressure oil filter 2 Filter case 3 Perforated cylinder 4 Filter element 5 Compression coil spring 6 Insulator 7 Lead wire 8 Touch sensor 9 Oil path 11 Oil reservoir (tank) 12 Hydraulic pump 13 Filter 14 Operating valve 15 Hydraulic cylinder 16 Piston
Claims (3)
フィルタ手段において、 前記フィルタのケース部材と、フィルタエレメント部材
間に、このフィルタエレメントに作用する差圧力により
このエレメントが移動して前記媒体液体の流通を閉塞す
る方向に対抗する方向に付勢された弾性手段を設けると
共に、 所定の前記エレメント移動量を検知するための検知手段
を設けたことを特徴とする高圧フィルタのフィルタのフ
ェイルセーフ機構。1. A filter means for filtering a medium fluid used in a pressure fluid circuit, wherein said element moves between a case member of said filter and a filter element member due to a differential pressure acting on said filter element. A fail-safe mechanism for a high-pressure filter, comprising: elastic means biased in a direction opposing a direction in which the flow of the element is closed; and detecting means for detecting a predetermined amount of element movement. .
ることを特徴とする請求項１記載の高圧フィルタのフェ
イルセーフ機構。2. The fail-safe mechanism for a high-pressure filter according to claim 1, wherein said pressure fluid circuit is a hydraulic fluid circuit.
圧流体回路であることを特徴とする請求項２記載の高圧
フィルタのフェイルセーフ機構。3. The fail-safe mechanism according to claim 2, wherein the hydraulic fluid circuit is a hydraulic fluid circuit of a punch press.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000019921A JP2001205021A (en) | 2000-01-28 | 2000-01-28 | Fail-safe mechanism of high pressure filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000019921A JP2001205021A (en) | 2000-01-28 | 2000-01-28 | Fail-safe mechanism of high pressure filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001205021A true JP2001205021A (en) | 2001-07-31 |
Family
ID=18546553
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000019921A Withdrawn JP2001205021A (en) | 2000-01-28 | 2000-01-28 | Fail-safe mechanism of high pressure filter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001205021A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100444858B1 (en) * | 2001-11-28 | 2004-08-21 | 현대자동차주식회사 | Oil filter |
| DE102007062102A1 (en) * | 2007-12-21 | 2009-06-25 | Mahle International Gmbh | filtering device |
| KR101360714B1 (en) | 2012-07-06 | 2014-02-07 | 송윤달 | High-pressure oil filter |
| JP2015025377A (en) * | 2013-07-24 | 2015-02-05 | 株式会社日本自動車部品総合研究所 | Fuel filter apparatus |
| CN106178666A (en) * | 2016-08-31 | 2016-12-07 | 泉州万利得节能科技有限公司 | Filter gauge, filter gauge metering method, the filter element of band metering, filter |
| CN109083888A (en) * | 2018-07-19 | 2018-12-25 | 武汉船用机械有限责任公司 | The detection device and detection method of filter differential pressure warning function |
-
2000
- 2000-01-28 JP JP2000019921A patent/JP2001205021A/en not_active Withdrawn
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100444858B1 (en) * | 2001-11-28 | 2004-08-21 | 현대자동차주식회사 | Oil filter |
| DE102007062102A1 (en) * | 2007-12-21 | 2009-06-25 | Mahle International Gmbh | filtering device |
| US9555351B2 (en) | 2007-12-21 | 2017-01-31 | Mahle International Gmbh | Filter device |
| KR101360714B1 (en) | 2012-07-06 | 2014-02-07 | 송윤달 | High-pressure oil filter |
| JP2015025377A (en) * | 2013-07-24 | 2015-02-05 | 株式会社日本自動車部品総合研究所 | Fuel filter apparatus |
| CN106178666A (en) * | 2016-08-31 | 2016-12-07 | 泉州万利得节能科技有限公司 | Filter gauge, filter gauge metering method, the filter element of band metering, filter |
| CN109083888A (en) * | 2018-07-19 | 2018-12-25 | 武汉船用机械有限责任公司 | The detection device and detection method of filter differential pressure warning function |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9764260B2 (en) | Filtering device, and filtering element for use in such a filtering device | |
| JPS5818521B2 (en) | Jidou Heiroben | |
| JP2009040359A (en) | Brake control device | |
| JP2001205021A (en) | Fail-safe mechanism of high pressure filter | |
| JP2003501593A (en) | Hydraulic oil tank | |
| JPS6022195B2 (en) | High pressure fluid generator | |
| US4300584A (en) | Hydraulic sequence valve | |
| JP2003322114A (en) | Hydraulic pressure generating device and hydraulic joint | |
| US6084187A (en) | Filter bypass switch | |
| CN208237455U (en) | A kind of lubricant filtering device applied to gas turbine | |
| KR970070584A (en) | Electrohydraulic control valve | |
| CN111562767A (en) | Mechanical equipment misoperation prevention system and control method | |
| KR940006228Y1 (en) | Low pressure sensing device for oil-pressure circuit of excavator | |
| JPH0320730Y2 (en) | ||
| CN203623605U (en) | Headlight cleaning device | |
| CN213839124U (en) | Base and multifunctional filter using same | |
| JPS5928122Y2 (en) | Engine air cleaner failure detection device | |
| CN212774992U (en) | Prevent that case from damaging compensating valve | |
| KR101048133B1 (en) | Negative pressure switch for diesel fuel filter | |
| KR100347754B1 (en) | The collection-tank to warn a sewage-level of vacuum dump | |
| CN114278629B (en) | Hydraulic oil tank, hydraulic system and air pressure balancing method of hydraulic oil tank | |
| SU1276851A1 (en) | Vacuum system protection arrangement | |
| JP3650161B2 (en) | Pressure control valve | |
| JP2007113619A (en) | Hydraulic unit | |
| KR100221605B1 (en) | Helium compressor for cryopump |
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: 20070403 |