JP2008045453A - Liquid force feed device - Google Patents

Liquid force feed device Download PDF

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JP2008045453A
JP2008045453A JP2006220120A JP2006220120A JP2008045453A JP 2008045453 A JP2008045453 A JP 2008045453A JP 2006220120 A JP2006220120 A JP 2006220120A JP 2006220120 A JP2006220120 A JP 2006220120A JP 2008045453 A JP2008045453 A JP 2008045453A
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shaft
float
arm
swing shaft
float arm
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Masahisa Hiroya
昌久 広谷
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TLV Co Ltd
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TLV Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a liquid force feed device, smooth in operation, by preventing foreign matter from biting in a clearance between a rocking shaft and a sliding bearing. <P>SOLUTION: A snap mechanism 5 has the rocking shaft 37 supported in a sealed vessel 2, a float arm 51 and a sub-arm 52 rotating around the rocking shaft 37, a first shaft 58 supported by the float arm 51, a second shaft 59 supported by the sub-arm 52, a coil spring 54 installed between the first and second shafts 58 and 59, and the sliding bearing 62 arranged between the rocking shaft 37 and a support member 61 of the float arm 51. The sliding bearing 62 is formed as a curved surface of making an inner surface shape of sliding with the rocking shaft 37 coincide with an outside surface shape of the rocking shaft 37, and is partially arranged only in a part of bringing the rocking shaft 37 into pressure contact with the support member 61 of the float arm 51. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、温水や燃料等の液体を圧送する液体圧送装置に関するものである。本発明の液体圧送装置は、各種蒸気使用装置で発生した復水をボイラーや廃熱利用箇所に送る装置として特に適するものである。   The present invention relates to a liquid pumping device that pumps liquid such as hot water or fuel. The liquid pressure feeding device of the present invention is particularly suitable as a device for sending condensate generated in various steam using devices to a boiler or a waste heat utilization site.

従来の液体圧送装置は、密閉容器に作動流体導入口と作動流体排出口と液体流入口及び液体排出口が設けられ、密閉容器内にフロートと切替え弁及びスナップ機構が内蔵され、スナップ機構は、密閉容器内に支持された揺動軸と、揺動軸の周りに回転するフロートアーム及び副アームと、フロートアームに支持された第１の軸と、副アームに支持された第２の軸と、第１及び第２の軸の間に取り付けられたバネを有し、フロートがフロートアームに連結され、切替え弁が動力伝達軸を介して副アームに連結されたものである。   In a conventional liquid pumping device, a closed container is provided with a working fluid inlet, a working fluid outlet, a liquid inlet and a liquid outlet, and a float, a switching valve and a snap mechanism are built in the sealed container. An oscillating shaft supported in the sealed container, a float arm and a sub arm rotating around the oscillating shaft, a first shaft supported by the float arm, and a second shaft supported by the sub arm And a spring mounted between the first and second shafts, the float is connected to the float arm, and the switching valve is connected to the sub arm via the power transmission shaft.

上記従来の液体圧送装置においては、揺動軸とフロートアームとの間の摩擦力による抵抗を低減させるために、揺動軸とフロートアームの間にリング状のすべり軸受けが配置される。しかしながら、揺動軸とフロートアームの間にリング状のすべり軸受けを配置すると、揺動軸とすべり軸受けとの間の隙間が小さくなり、液体圧送装置内に流入するゴミやスケール等の異物が揺動軸とすべり軸受けとの間の隙間に噛み込まれ易く、動作の円滑性を欠く問題点があった。
アメリカ特許５１４１４０５号 In the conventional liquid pumping device, a ring-shaped sliding bearing is disposed between the swing shaft and the float arm in order to reduce resistance due to frictional force between the swing shaft and the float arm. However, if a ring-shaped slide bearing is arranged between the swing shaft and the float arm, the gap between the swing shaft and the slide bearing is reduced, and foreign matters such as dust and scale flowing into the liquid pumping device are shaken. There is a problem that it is easily caught in the gap between the dynamic shaft and the sliding bearing and lacks smooth operation.
US Pat. No. 5,141,405

解決しようとする課題は、揺動軸とすべり軸受けとの間の隙間に異物が噛み込まれないようにして、動作が円滑な液体圧送装置を提供することである。   The problem to be solved is to provide a liquid pumping device that operates smoothly so that foreign matter is not caught in the gap between the swing shaft and the sliding bearing.

本発明は、密閉容器に作動流体導入口と作動流体排出口と液体流入口及び液体排出口が設けられ、密閉容器内にフロートと切替え弁及びスナップ機構が内蔵され、スナップ機構は、密閉容器内に支持された揺動軸と、揺動軸の周りに回転するフロートアーム及び副アームと、フロートアームに支持された第１の軸と、副アームに支持された第２の軸と、第１及び第２の軸の間に取り付けられたバネを有し、フロートがフロートアームに連結され、切替え弁が動力伝達軸を介して副アームに連結された液体圧送装置において、揺動軸とフロートアームの間に、揺動軸と摺動する内面形状を揺動軸の外面形状に一致する曲面としたすべり軸受けを、揺動軸とフロートアームが圧接する部分のみに部分的に配置したことを特徴とする。   In the present invention, a closed container is provided with a working fluid inlet, a working fluid outlet, a liquid inlet and a liquid outlet, and a float, a switching valve and a snap mechanism are built in the sealed container. A swing shaft supported by the swing arm, a float arm and a sub arm rotating around the swing shaft, a first shaft supported by the float arm, a second shaft supported by the sub arm, and a first shaft And a spring mounted between the second shaft, the float is connected to the float arm, and the switching valve is connected to the sub arm via the power transmission shaft. The sliding bearing with a curved surface that matches the outer shape of the rocking shaft is partly disposed only at the part where the rocking shaft and the float arm are in pressure contact with each other. And

本発明は、揺動軸とすべり軸受けの間及び揺動軸とフロートアームの間に異物が噛み込まれることがないので、動作が円滑な液体圧送装置を提供できるという優れた効果を生じる。   According to the present invention, since no foreign matter is caught between the swinging shaft and the sliding bearing and between the swinging shaft and the float arm, an excellent effect of providing a liquid pumping device having a smooth operation is produced.

本発明の液体圧送装置は、揺動軸とフロートアームの間に、揺動軸と摺動する内面形状を揺動軸の外面形状に一致する曲面としたすべり軸受けを、揺動軸とフロートアームが圧接する部分のみに部分的に配置したものである。そのため、揺動軸とすべり軸受けの間には隙間がなく、異物が噛み込まれることがない。また、揺動軸とフロートアームとの間の隙間は大きくできるので、異物が流入しても噛み込まれることがない。   The liquid pumping device according to the present invention includes a sliding bearing having a curved surface whose inner surface shape that slides between the rocking shaft and the float arm coincides with the outer surface shape of the rocking shaft between the rocking shaft and the float arm. Is partially arranged only in the portion where the pressure contacts. For this reason, there is no gap between the swing shaft and the sliding bearing, and no foreign matter is caught. Further, since the gap between the swing shaft and the float arm can be made large, even if foreign matter flows in, it is not bitten.

上記の技術的手段の具体例を示す実施例を説明する（図１乃至図３参照）。本実施例の液体圧送装置１は密閉容器２内にフロート３と切替え弁４及びスナップ機構５が配されたものである。密閉容器２は本体部７と蓋部８が図示しないネジによって結合され、内部に液体溜空間１０が形成されたものである。蓋部８には作動流体導入口１１，作動流体排出口１３，液体流入口１６，液体排出口１７が設けられている。   An embodiment showing a specific example of the above technical means will be described (see FIGS. 1 to 3). The liquid pumping apparatus 1 according to the present embodiment has a float 3, a switching valve 4, and a snap mechanism 5 arranged in a sealed container 2. The sealed container 2 has a main body portion 7 and a lid portion 8 connected by screws (not shown), and a liquid reservoir space 10 is formed inside. The lid 8 is provided with a working fluid introduction port 11, a working fluid discharge port 13, a liquid inflow port 16, and a liquid discharge port 17.

作動流体導入口１１の内側に給気弁２０が取り付けられ、作動流体排出口１３の内側に排気弁２１が取り付けられている。給気弁２０は弁ケース２２と弁体２３及び昇降棒２４によって構成される。弁ケース２２は軸方向に貫通孔を有し、貫通孔の上端面は弁座２５として機能する。弁ケース２２の中間部には貫通孔と外部とを連通する４つの開口２６が設けられている。弁体２３は半球状で昇降棒２４の先端に一体的に取り付けられている。給気弁２０の弁ケース２２が作動流体導入口１１の中にねじ込まれ、弁体２３は作動流体導入口１１側にあり、昇降棒２４は弁ケース２２の貫通孔を通って密閉容器２側に抜け、連設板２７に当接するようになっている。連設板２７は弁軸操作棒２８に連結され、弁軸操作棒２８はスナップ機構５と連結されている。排気弁２１は弁ケース２９と弁体３０と昇降棒３１によって構成される。弁ケース２９は軸方向に貫通孔を有し、貫通孔の内部に弁座３２があり、弁座３２の下から昇降棒３１の上端に保持固定された弁体３０が当接して開閉を行うものである。昇降棒３１の下端はピン３３で弁軸操作棒２８に連結されている。給気弁２０と排気弁２１で切替え弁４が構成され、給気弁２０が開くと排気弁２１は閉じ、給気弁２０が閉じると排気弁２１は開く。   An air supply valve 20 is attached inside the working fluid introduction port 11, and an exhaust valve 21 is attached inside the working fluid discharge port 13. The air supply valve 20 includes a valve case 22, a valve body 23, and an elevating rod 24. The valve case 22 has a through hole in the axial direction, and the upper end surface of the through hole functions as the valve seat 25. Four openings 26 are provided in the middle portion of the valve case 22 to communicate the through holes with the outside. The valve body 23 is hemispherical and is integrally attached to the tip of the lifting rod 24. The valve case 22 of the air supply valve 20 is screwed into the working fluid introduction port 11, the valve body 23 is on the working fluid introduction port 11 side, and the lifting / lowering rod 24 passes through the through hole of the valve case 22 and is on the sealed container 2 side. And come into contact with the continuous plate 27. The connecting plate 27 is connected to the valve shaft operating rod 28, and the valve shaft operating rod 28 is connected to the snap mechanism 5. The exhaust valve 21 includes a valve case 29, a valve body 30, and an elevating rod 31. The valve case 29 has a through hole in the axial direction, and has a valve seat 32 inside the through hole. The valve body 30 held and fixed to the upper end of the lifting rod 31 from below the valve seat 32 makes contact and opens and closes. Is. The lower end of the lifting rod 31 is connected to the valve shaft operating rod 28 by a pin 33. The switching valve 4 is constituted by the air supply valve 20 and the exhaust valve 21, and when the air supply valve 20 is opened, the exhaust valve 21 is closed, and when the air supply valve 20 is closed, the exhaust valve 21 is opened.

フロート３はレバー３４及び軸３５を介してブラケット３６によって支持され、スナップ機構５は揺動軸３７を介してブラケット３８によって支持されている。ブラケット３６とブラケット３８は図示しないネジによって結合され、密閉容器２の蓋部８に一体的に取り付けられている。レバー３４は図２のように板を「Ｕ」字状に曲げ加工して作られたものであり、２枚の板が平行に対向し、曲げ加工された部分にフロート３が結合されている。レバー３４の他端部には軸４０が取り付けられている。ブラケット３６は図３の様に「Ｌ」字状をした２枚の板よりなり、軸３５及び軸４１，４２が掛け渡されて連結されたものである。軸３５を中心としてフロート３は回転する。軸４１，４２はそれぞれフロート３の上下限のストッパを兼用している。ブラケット３８も同様に「Ｌ」字状をした２枚の板よりなり、揺動軸３７及び軸４３が掛け渡されて連結されたものである。軸４３は下記の副アーム５２のストッパを兼ねている。   The float 3 is supported by a bracket 36 via a lever 34 and a shaft 35, and the snap mechanism 5 is supported by a bracket 38 via a swing shaft 37. The bracket 36 and the bracket 38 are coupled by a screw (not shown) and are integrally attached to the lid portion 8 of the sealed container 2. The lever 34 is made by bending a plate into a “U” shape as shown in FIG. 2, the two plates face each other in parallel, and the float 3 is joined to the bent portion. . A shaft 40 is attached to the other end of the lever 34. As shown in FIG. 3, the bracket 36 is composed of two “L” -shaped plates, and the shaft 35 and the shafts 41 and 42 are spanned and connected. The float 3 rotates about the shaft 35. The shafts 41 and 42 also serve as upper and lower limit stoppers for the float 3. Similarly, the bracket 38 is also composed of two “L” -shaped plates, and the swing shaft 37 and the shaft 43 are stretched over and connected. The shaft 43 also serves as a stopper for the sub arm 52 described below.

スナップ機構５はフロートアーム５１、副アーム５２、圧縮状態のコイルバネ５４、バネ受け部材５５及びバネ受け部材５６からなる。フロートアーム５１は図３の様に平行に対向した２枚の板よりなり、２枚の板の左端部には溝５７が設けられている。フロートアーム５１の溝５７にはレバー３４の軸４０が嵌合している。フロートアーム５１は揺動軸３７によって右端部が回転可能に支持されている。そのためフロートアーム５１はフロート３の浮沈に追従し、揺動軸３７を中心として上下に揺動する。フロートアーム５１には揺動軸３７により回転可能に支持される部分に支持部材６１が圧入により固定され、支持部材６１がフロートアーム５１に一体に形成されている。揺動軸３７とフロートアーム５１の支持部材６１との間に、揺動軸３７と摺動する内面形状を揺動軸３７の外面形状に一致する曲面としたすべり軸受け６２を、揺動軸３７と支持部材６１が圧接する部分のみに部分的に配置する。揺動軸３７とすべり軸受け６２の間には隙間がなく、異物が噛み込まれることがない。揺動軸３７と支持部材６１との間の隙間は大きくできるので、異物が流入しても噛み込まれることがない。   The snap mechanism 5 includes a float arm 51, a sub arm 52, a compressed coil spring 54, a spring receiving member 55, and a spring receiving member 56. As shown in FIG. 3, the float arm 51 is composed of two plates facing each other in parallel, and a groove 57 is provided at the left end of the two plates. The shaft 40 of the lever 34 is fitted in the groove 57 of the float arm 51. The float arm 51 is rotatably supported by the swing shaft 37 at the right end. Therefore, the float arm 51 follows up and down of the float 3 and swings up and down around the swing shaft 37. A support member 61 is fixed to a portion of the float arm 51 that is rotatably supported by the swing shaft 37 by press fitting, and the support member 61 is formed integrally with the float arm 51. Between the swing shaft 37 and the support member 61 of the float arm 51, a slide bearing 62 having an inner surface that slides with the swing shaft 37 and a curved surface that matches the outer surface shape of the swing shaft 37 is provided. And the support member 61 are partially disposed only at the portion where they are in pressure contact. There is no gap between the rocking shaft 37 and the sliding bearing 62, and no foreign matter is caught. Since the gap between the swing shaft 37 and the support member 61 can be made large, even if foreign matter flows in, it is not bitten.

フロートアーム５１の右端部は下方に脹れ、その下端部には揺動軸３７と平行な第１の軸５８が掛け渡され、バネ受け部材５５が第１の軸５８によって回転可能に支持されている。揺動軸３７に副アーム５２の上端部が回転可能に支持されている。副アーム５２は図３の様に平行に対向した２枚の板よりなり、夫々の板は逆「Ｌ」字状をしている。副アーム５２の下端部には揺動軸３７及び第１の軸５８と平行な第２の軸５９が掛け渡され、バネ受け部材５６が第２の軸５９によって回転可能に支持されている。両バネ受け部材５５，５６の間に圧縮状態のコイルバネ５４が取り付けられている。また副アーム５２の上左端部に軸６０が掛け渡され、弁軸操作棒２８の下端が連結されている。フロートアーム５１には、軸６０の動きを妨げないように、窓８１が開けられている。   A right end portion of the float arm 51 is expanded downward, and a first shaft 58 parallel to the swing shaft 37 is spanned on the lower end portion thereof, and the spring receiving member 55 is rotatably supported by the first shaft 58. ing. An upper end portion of the sub arm 52 is rotatably supported on the swing shaft 37. As shown in FIG. 3, the sub arm 52 is composed of two plates facing each other in parallel, and each plate has an inverted “L” shape. A swinging shaft 37 and a second shaft 59 parallel to the first shaft 58 are stretched around the lower end portion of the sub arm 52, and the spring receiving member 56 is rotatably supported by the second shaft 59. A compressed coil spring 54 is attached between the spring receiving members 55 and 56. A shaft 60 is stretched over the upper left end of the sub arm 52, and the lower end of the valve shaft operating rod 28 is connected. A window 81 is opened in the float arm 51 so as not to hinder the movement of the shaft 60.

次に本実施例の液体圧送装置１の作用について、作動流体として蒸気を用いた場合の一連の動作手順を追うことによって説明する。まず液体圧送装置１の外部配管は作動流体導入口１１が高圧の蒸気源に接続され、作動流体排出口１３は蒸気循環配管に接続される。液体流入口１６は外部から液体溜空間１０に向かって開く逆止弁（図示せず）を介して蒸気使用装置等の負荷に接続され、液体排出口１７は液体溜空間１０から外部に向かって開く逆止弁（図示せず）を介してボイラー等の液体圧送先へ接続される。   Next, the operation of the liquid pumping apparatus 1 of this embodiment will be described by following a series of operation procedures when steam is used as the working fluid. First, in the external piping of the liquid pumping apparatus 1, the working fluid inlet 11 is connected to a high-pressure steam source, and the working fluid outlet 13 is connected to the steam circulation piping. The liquid inlet 16 is connected to a load such as a vapor using device via a check valve (not shown) that opens from the outside toward the liquid reservoir space 10, and the liquid outlet 17 is directed outward from the liquid reservoir space 10. It is connected to a liquid pumping destination such as a boiler via an open check valve (not shown).

本実施例の液体圧送装置１の液体溜空間１０内に復水が無い場合は、図１に示すようにフロート３は底部に位置する。このとき、切替え弁４における給気弁２０が閉じられ、排気弁２１が開かれている。そして、蒸気使用装置等の負荷内で復水が発生すると、復水は圧送液体流入口１６から液体圧送装置１に流下して、液体溜空間１０内に溜まる。液体溜空間１０内に溜まった復水によってフロート３が浮上すると、レバー３４が軸３５を中心に時計回り方向に回転し、レバー３４の回転による軸４０の下方への移動に連動して、フロートアーム５１が揺動軸３７を中心に反時計回り方向に回転し、コイルバネ５４との連結部である第１の軸５８が右方に移動して揺動軸３７と第２の軸５９を結ぶ線に近付き、コイルバネ５４は圧縮変形する。そしてフロート３が更に上昇し、第１の軸５８が揺動軸３７と第２の軸５９を結ぶ線上に並び、なおもフロート３が上昇して第１の軸５８が揺動軸３７と第２の軸５９を結ぶ線よりも右方に移動すると、コイルバネ５４は急激に変形を回復し、副アーム５２が時計回り方向に回転して第２の軸５９が左方にスナップ移動する。その結果、副アーム５２の軸６０に連結された弁軸操作棒２８が上側に移動し、給気弁２０が開口されると共に排気弁２１が閉じられる。   When there is no condensate in the liquid reservoir space 10 of the liquid pumping apparatus 1 of this embodiment, the float 3 is located at the bottom as shown in FIG. At this time, the supply valve 20 in the switching valve 4 is closed and the exhaust valve 21 is opened. When condensate is generated in a load such as a steam using device, the condensate flows down from the pumped liquid inflow port 16 to the liquid pumped device 1 and accumulates in the liquid reservoir space 10. When the float 3 rises due to the condensate accumulated in the liquid storage space 10, the lever 34 rotates clockwise about the shaft 35, and the float 40 moves in conjunction with the downward movement of the shaft 40 due to the rotation of the lever 34. The arm 51 rotates counterclockwise about the swing shaft 37, and the first shaft 58, which is a connecting portion with the coil spring 54, moves to the right to connect the swing shaft 37 and the second shaft 59. As the wire approaches the wire, the coil spring 54 is compressed and deformed. Then, the float 3 further rises, the first shaft 58 is aligned on the line connecting the swing shaft 37 and the second shaft 59, and the float 3 is still lifted so that the first shaft 58 is moved from the swing shaft 37 to the first shaft. When the coil spring 54 is moved to the right from the line connecting the two shafts 59, the deformation of the coil spring 54 is suddenly restored, the sub arm 52 rotates clockwise, and the second shaft 59 snaps to the left. As a result, the valve shaft operating rod 28 connected to the shaft 60 of the sub arm 52 moves upward, the air supply valve 20 is opened, and the exhaust valve 21 is closed.

給気弁２０が開かれて作動流体導入口１１が開放されると、密閉容器２内に高圧蒸気が導入され、内部の圧力が上昇し、液体溜空間１０に溜まった復水は、蒸気圧に押されて圧送液体排出口１７から図示しない逆止弁を介して外部のボイラーや廃熱利用装置へ排出される。復水の排出によって復水溜空間１０内の水位が低下すると、フロート３が降下して、レバー３４が軸３５を中心に反時計回り方向に回転し、レバー３４の回転による軸４０の上方への移動に連動して、フロートアーム５１が揺動軸３７を中心に時計回り方向に回転し、コイルバネ５４との連結部である第１の軸５８が左方に移動して揺動軸３７と第２の軸５９を結ぶ線に近付き、コイルバネ５４は圧縮変形する。そしてフロート３が更に降下し、第１の軸５８が揺動軸３７と第２の軸５９を結ぶ線上に並び、なおもフロート３が降下して第１の軸５８が揺動軸３７と第２の軸５９を結ぶ線よりも左方に移動すると、コイルバネ５４は急激に変形を回復し、副アーム５２が反時計回り方向に回転して第２の軸５９が右方にスナップ移動する。その結果、副アーム５２の軸６０に連結された弁軸操作棒２８が下側に移動し、給気弁２０が閉じ、排気弁２１が開口する。   When the air supply valve 20 is opened and the working fluid inlet 11 is opened, high-pressure steam is introduced into the sealed container 2, the internal pressure rises, and the condensate accumulated in the liquid reservoir space 10 is vapor pressure. And is discharged from the pressure liquid discharge port 17 to an external boiler or waste heat utilization device via a check valve (not shown). When the water level in the condensate reservoir space 10 decreases due to the discharge of the condensate, the float 3 descends, the lever 34 rotates counterclockwise around the shaft 35, and the lever 40 rotates upward to the shaft 40. In conjunction with the movement, the float arm 51 rotates clockwise about the swing shaft 37, and the first shaft 58, which is a connecting portion with the coil spring 54, moves to the left and the swing shaft 37 and the first shaft The coil spring 54 is compressed and deformed near the line connecting the two shafts 59. Then, the float 3 is further lowered, the first shaft 58 is arranged on a line connecting the swing shaft 37 and the second shaft 59, and the float 3 is further lowered so that the first shaft 58 is moved to the swing shaft 37 and the second shaft 59. When the coil spring 54 is moved leftward from the line connecting the two shafts 59, the deformation of the coil spring 54 is suddenly restored, the sub arm 52 rotates counterclockwise, and the second shaft 59 snaps to the right. As a result, the valve shaft operating rod 28 connected to the shaft 60 of the sub arm 52 moves downward, the air supply valve 20 is closed, and the exhaust valve 21 is opened.

本発明の実施例の液体圧送装置の断面図。Sectional drawing of the liquid pumping apparatus of the Example of this invention. 図１のＡ−Ａ拡大断面図。The AA expanded sectional view of FIG. 図２のすべり軸受け部分のＢ−Ｂ断面図。BB sectional drawing of the sliding bearing part of FIG.

符号の説明Explanation of symbols

１ 液体圧送装置
２ 密閉容器
３ フロート
４ 切替え弁
５ スナップ機構
１０ 液体溜空間
１１ 作動流体導入口
１３ 作動流体排出口
１６ 液体流入口
１７ 液体排出口
２０ 給気弁
２１ 排気弁
２８ 動力伝達軸
３７ 揺動軸
５１ フロートアーム
５２ 副アーム
５４ コイルバネ
５８ 第１の軸
５９ 第２の軸
６１ 支持部材
６２ すべり軸受け
DESCRIPTION OF SYMBOLS 1 Liquid pumping apparatus 2 Airtight container 3 Float 4 Switching valve 5 Snap mechanism 10 Liquid reservoir space 11 Working fluid inlet 13 Working fluid outlet 16 Liquid inlet 17 Liquid outlet 20 Air supply valve 21 Exhaust valve 28 Power transmission shaft 37 Shaking Moving shaft 51 Float arm 52 Sub arm 54 Coil spring 58 First shaft 59 Second shaft 61 Support member 62 Slide bearing

Claims (1)

密閉容器に作動流体導入口と作動流体排出口と液体流入口及び液体排出口が設けられ、密閉容器内にフロートと切替え弁及びスナップ機構が内蔵され、スナップ機構は、密閉容器内に支持された揺動軸と、揺動軸の周りに回転するフロートアーム及び副アームと、フロートアームに支持された第１の軸と、副アームに支持された第２の軸と、第１及び第２の軸の間に取り付けられたバネを有し、フロートがフロートアームに連結され、切替え弁が動力伝達軸を介して副アームに連結された液体圧送装置において、揺動軸とフロートアームの間に、揺動軸と摺動する内面形状を揺動軸の外面形状に一致する曲面としたすべり軸受けを、揺動軸とフロートアームが圧接する部分のみに部分的に配置したことを特徴とする液体圧送装置。
The sealed container is provided with a working fluid inlet, a working fluid outlet, a liquid inlet and a liquid outlet, and a float, a switching valve and a snap mechanism are built in the sealed container, and the snap mechanism is supported in the sealed container. A swing shaft, a float arm and a sub arm rotating around the swing shaft, a first shaft supported by the float arm, a second shaft supported by the sub arm, and first and second In a liquid pumping device having a spring attached between shafts, a float connected to a float arm, and a switching valve connected to a sub arm via a power transmission shaft, between the swing shaft and the float arm, A liquid pumping system characterized in that a sliding bearing having an inner surface that slides on the swing shaft and a curved surface that matches the outer surface shape of the swing shaft is partially disposed only at a portion where the swing shaft and the float arm are in pressure contact with each other. apparatus.
JP2006220120A 2006-08-11 2006-08-11 Liquid force feed device Pending JP2008045453A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2006220120A JP2008045453A (en) 2006-08-11 2006-08-11 Liquid force feed device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2006220120A JP2008045453A (en) 2006-08-11 2006-08-11 Liquid force feed device

Publications (1)

Publication Number Publication Date
JP2008045453A true JP2008045453A (en) 2008-02-28

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Family Applications (1)

Application Number Title Priority Date Filing Date
JP2006220120A Pending JP2008045453A (en) 2006-08-11 2006-08-11 Liquid force feed device

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Country Link
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103195404A (en) * 2013-04-10 2013-07-10 甘肃红峰机械有限责任公司 Zero leakage drain valve for natural gas with vertically-installed sealing pair

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59180013U (en) * 1983-05-19 1984-12-01 大豊工業株式会社 bearing
JPH06306560A (en) * 1993-02-23 1994-11-01 Nippon Steel Corp Plain bearing for continuous hot-dip metal coating bath roll
JPH09280489A (en) * 1996-04-18 1997-10-31 Tlv Co Ltd Liquid forced feeding device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59180013U (en) * 1983-05-19 1984-12-01 大豊工業株式会社 bearing
JPH06306560A (en) * 1993-02-23 1994-11-01 Nippon Steel Corp Plain bearing for continuous hot-dip metal coating bath roll
JPH09280489A (en) * 1996-04-18 1997-10-31 Tlv Co Ltd Liquid forced feeding device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103195404A (en) * 2013-04-10 2013-07-10 甘肃红峰机械有限责任公司 Zero leakage drain valve for natural gas with vertically-installed sealing pair
CN103195404B (en) * 2013-04-10 2015-07-22 甘肃红峰机械有限责任公司 Zero leakage drain valve for natural gas with vertically-installed sealing pair

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