JP2010266031A - Liquid pumping device - Google Patents

Liquid pumping device Download PDF

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JP2010266031A
JP2010266031A JP2009119261A JP2009119261A JP2010266031A JP 2010266031 A JP2010266031 A JP 2010266031A JP 2009119261 A JP2009119261 A JP 2009119261A JP 2009119261 A JP2009119261 A JP 2009119261A JP 2010266031 A JP2010266031 A JP 2010266031A
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liquid
supply valve
air supply
valve
guide
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JP5405896B2 (en
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Tomomi Kubo
知美 久保
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Tlv Co Ltd
株式会社テイエルブイ
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a liquid pumping device which can prevent the inclination of an air supply valve body and a lower lifting rod by a simple structure having a reduced number of parts. <P>SOLUTION: This liquid pumping device 1 is provided with a sealed container 2 having an operating fluid introduction port 11, an operating fluid drain port 13, a liquid flow-in port 16 and a liquid drain port 17. An air supply valve 20 in the operating fluid introduction port 11 and an exhaust valve 21 in the operating fluid drain port 13 are changed over to be opened/closed depending on the liquid surface level of a liquid staying in the sealed container 2. At first, the exhaust valve 21 is opened and the air supply valve 20 is closed for the liquid to flow in from the liquid flow-in port 16, and then the exhaust valve 21 is closed and the air supply valve 20 is opened for the liquid staying in the sealed container 2 to be pumped from the liquid drain port 17. In the device, the lower lifting rod 18 is integrally mounted on the air supply valve body 23 of the air supply valve 20 to be guided up and down by an upper guide member 19a and lower guide member 19b. <P>COPYRIGHT: (C)2011,JPO&amp;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、例えば特許文献1に開示されている。これは、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、密閉容器内に溜った液体の液面の高さに応じて作動流体導入口の給気弁と作動流体排出口の排気弁の開閉を切り換えて、初めに排気弁を開き給気弁を閉じて液体流入口から液体を流入させ、次いで排気弁を閉じ給気弁を開いて密閉容器内に溜った液体を液体排出口から圧送する液体圧送装置において、給気弁の給気弁体に下部昇降棒を一体的に取り付けて、下部昇降棒を下部案内部材で上下に案内すると共に、給気弁の給気弁体に上部昇降棒を一体的に取り付けて、上部昇降棒を上部案内部材で上下に案内するものである。 A conventional liquid pumping device is disclosed in Patent Document 1, for example. This is because the closed container is provided with a working fluid inlet, a working fluid outlet, a liquid inlet, and a liquid outlet, and the air supplied to the working fluid inlet according to the liquid level of the liquid accumulated in the sealed container. Switch between opening and closing the valve and the exhaust valve of the working fluid discharge port, first open the exhaust valve and close the air supply valve to allow liquid to flow in from the liquid inlet, then close the exhaust valve and open the air supply valve and open the airtight valve In the liquid pumping device that pumps the liquid accumulated in the liquid discharge port, the lower lift bar is integrally attached to the air supply valve body of the air supply valve, and the lower lift bar is guided up and down by the lower guide member and supplied. The upper elevating rod is integrally attached to the air supply valve body of the air valve, and the upper elevating rod is guided up and down by the upper guide member.

特開2008−309285JP2008-309285A

上記従来の液体圧送装置は、給気弁体の下部昇降棒と上部昇降棒をそれぞれ下部案内部材と上部案内部材で上下に案内して給気弁体と下部昇降棒及び上部昇降棒を傾き難くしたことにより、下部昇降棒と下部案内部材との摺動抵抗及び上部昇降棒と上部案内部材との摺動抵抗を小さくでき、給気弁の開閉切り換えの応答性が良くなるものである。しかしながら、上部昇降棒を必要とするために部品点数が多く構造が複雑であるという問題点があった。 The above-described conventional liquid pumping apparatus guides the lower elevating rod and the upper elevating rod of the air supply valve body up and down by the lower guide member and the upper guide member, respectively, and makes it difficult for the air supply valve body, the lower elevating rod and the upper elevating rod to tilt. As a result, the sliding resistance between the lower elevating rod and the lower guide member and the sliding resistance between the upper elevating rod and the upper guide member can be reduced, and the responsiveness of the switching of the air supply valve can be improved. However, since the upper lifting bar is required, there is a problem that the number of parts is large and the structure is complicated.

したがって本発明が解決しようとする課題は、部品点数を減少して簡単な構造により給気弁体と下部昇降棒の傾きを防止できる液体圧送装置を提供することである。 Therefore, the problem to be solved by the present invention is to provide a liquid pumping device that can reduce the number of parts and prevent the supply valve body and the lower lifting rod from tilting with a simple structure.

上記の課題を解決するために、本発明の液体圧送装置は、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、密閉容器内に溜った液体の液面の高さに応じて作動流体導入口の給気弁と作動流体排出口の排気弁の開閉を切り換えて、初めに排気弁を開き給気弁を閉じて液体流入口から液体を流入させ、次いで排気弁を閉じ給気弁を開いて密閉容器内に溜った液体を液体排出口から圧送する液体圧送装置において、給気弁の給気弁体に下部昇降棒を一体的に取り付けて、下部昇降棒を上部案内部材及び下部案内部材で上下に案内することを特徴とするものである。 In order to solve the above problems, the liquid pumping device of the present invention is provided with a working fluid introduction port, a working fluid discharge port, a liquid inlet and a liquid discharge port provided in a sealed container, and a liquid liquid accumulated in the sealed container. Switch the opening and closing of the intake valve of the working fluid inlet and the exhaust valve of the working fluid outlet according to the height of the surface, first open the exhaust valve and close the intake valve to allow liquid to flow in from the liquid inlet, Next, in the liquid pressure feeding device that closes the exhaust valve and opens the air supply valve and pumps the liquid accumulated in the sealed container from the liquid discharge port, the lower lifting rod is integrally attached to the air supply valve body of the air supply valve, The elevating bar is guided up and down by an upper guide member and a lower guide member.

本発明によれば、給気弁の給気弁体に一体的に取り付けた下部昇降棒を上部案内部材及び下部案内部材で上下に案内して給気弁体と下部昇降棒を傾き難くしたことにより、部品点数を減少して簡単な構造により下部昇降棒と上部案内部材及び下部案内部材との摺動抵抗を小さくでき、給気弁の開閉切り換えの応答性が良くなるという効果を奏する。 According to the present invention, the lower elevating rod integrally attached to the air supply valve body of the air supply valve is guided up and down by the upper guide member and the lower guide member to make it difficult for the air supply valve body and the lower elevating rod to tilt. Thus, the number of parts can be reduced, and the sliding resistance between the lower elevating bar, the upper guide member, and the lower guide member can be reduced with a simple structure, and the responsiveness of the switching of the supply valve can be improved.

本発明の実施の形態に係わる液体圧送装置の断面図である。It is sectional drawing of the liquid pumping apparatus concerning embodiment of this invention. 図1の給気弁の拡大断面図である。It is an expanded sectional view of the air supply valve of FIG.

以下、本発明の実施の形態について、図1乃至図3を参照して説明する。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。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と給気弁体23と下部昇降棒18と上部案内部材19a及び下部案内部材19b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の中間部には前記した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。給気弁体23は球状で作動流体導入口11側にあり、下端に下部昇降棒18が溶接により一体的に取り付けられている。下部昇降棒18は弁ケース22の内面に形成した3本のリブからなる上部案内部材19aにより上部が上下に摺動自在に案内されると共に、弁ケース22の内面に形成した小径内周壁からなる下部案内部材19bにより下部が上下に摺動自在に案内される。下部昇降棒18は弁ケース22の貫通孔を通って密閉容器2側に抜け、連接板27に当接するようになっている。連接板27は動力伝達軸28に連結され、動力伝達軸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と排気弁体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排気弁体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。 Hereinafter, embodiments of the present invention will be described with reference to 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. 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, an air supply valve body 23, a lower lifting rod 18, an upper guide member 19a, and a lower guide member 19b. 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 so as to communicate the above-described through holes with the outside. The air supply valve body 23 is spherical and is on the working fluid inlet 11 side, and a lower lift bar 18 is integrally attached to the lower end thereof by welding. The lower elevating rod 18 is guided by an upper guide member 19a made of three ribs formed on the inner surface of the valve case 22 so that the upper portion can be slid up and down, and has a small-diameter inner peripheral wall formed on the inner surface of the valve case 22. The lower guide member 19b guides the lower part to be slidable up and down. The lower lifting / lowering rod 18 passes through the through hole of the valve case 22 to the side of the sealed container 2 and comes into contact with the connecting plate 27. The connecting plate 27 is connected to a power transmission shaft 28, and the power transmission shaft 28 is connected to the snap mechanism 5. The exhaust valve 21 includes a valve case 29, an exhaust valve body 30, and a lifting 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 exhaust valve body 30 held and fixed to the upper end of the elevating rod 31 from below the valve seat 32 contacts and opens and closes. Is what you do. The lower end of the elevating rod 31 is connected to the valve shaft operating rod 28 by a pin. 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はフロートアーム34と揺動軸35を介してブラケット36によって支持されている。ブラケット36は図示しないネジによって密閉容器2の蓋部8に一体的に取り付けられている。スナップ機構5はフロートアーム34と副アーム37及び圧縮状態のコイルバネ38によって構成される。フロートアーム34は平行に対向した2枚の板よりなり、左端にフロート3が固着され、右側部が揺動軸35によって回転可能に支持されている。従って、フロート3は揺動軸35を中心として上下に揺動する。フロートアーム34の中央部に揺動軸35と平行な第1の軸39が掛け渡されている。第1の軸39に第1バネ受け部材40が回転可能に支持されている。また、揺動軸35には副アーム37が回転可能に支持されている。副アーム37は平行に対向した2枚の板よりなり、左端部に揺動軸35と平行な第2の軸41が掛け渡されている。第2の軸41に第2バネ受け部材42が回転可能に支持されている。第1及び第2のバネ受け部材40,42の間に圧縮状態のコイルバネ38が配置されている。フロートアーム34には半円状に長孔43が設けられ、長孔43内に揺動軸35と平行なストッパー軸44がブラケット36によって支持されている。ストッパー軸44は副アーム37の回転範囲を規制する。副アーム37の右端部に揺動軸35と平行な連結軸45が貫通して取り付けられ、連結軸45に動力伝達軸28の下端が連結されている。揺動軸35と平行でフロートアーム34の揺動範囲を規制するストッパー軸51,52がブラケット36によって支持されている。 The float 3 is supported by a bracket 36 via a float arm 34 and a swing shaft 35. The bracket 36 is integrally attached to the lid portion 8 of the sealed container 2 by screws (not shown). The snap mechanism 5 includes a float arm 34, a sub arm 37, and a coil spring 38 in a compressed state. The float arm 34 is composed of two parallel opposing plates, the float 3 is fixed to the left end, and the right side portion is rotatably supported by the swing shaft 35. Accordingly, the float 3 swings up and down around the swing shaft 35. A first shaft 39 parallel to the swing shaft 35 is stretched around the center of the float arm 34. A first spring receiving member 40 is rotatably supported on the first shaft 39. A sub arm 37 is rotatably supported on the swing shaft 35. The sub arm 37 is composed of two plates facing each other in parallel, and a second shaft 41 parallel to the swing shaft 35 is stretched over the left end portion. A second spring receiving member 42 is rotatably supported on the second shaft 41. A coil spring 38 in a compressed state is disposed between the first and second spring receiving members 40 and 42. The float arm 34 is provided with a semicircular elongated hole 43, and a stopper shaft 44 parallel to the swing shaft 35 is supported by the bracket 36 in the elongated hole 43. The stopper shaft 44 regulates the rotation range of the sub arm 37. A connecting shaft 45 that is parallel to the swing shaft 35 is attached to the right end of the sub arm 37 so as to pass therethrough, and the lower end of the power transmission shaft 28 is connected to the connecting shaft 45. Stopper shafts 51 and 52 that are parallel to the swing shaft 35 and restrict the swing range of the float arm 34 are supported by the bracket 36.

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。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内に溜る。液体溜空間10内に溜った復水によってフロート3が浮上すると、フロートアーム34が揺動軸35を中心に時計回り方向に回転し、コイルバネ38との連結部である第1の軸39が上方に移動して揺動軸35と第2の軸41を結ぶ線の延長線上に近付き、コイルバネ38が圧縮変形する。そしてフロート3が更に浮上して第1の軸39が揺動軸35と第2の軸41を結ぶ線の延長線上を越えると、コイルバネ38が急激に変形を回復し、副アーム37が反時計回り方向に回転して連結軸45が上方にスナップ移動する。その結果、連結軸45に連結された動力伝達軸28が上側にスナップ移動し、給気弁20が開かれると共に排気弁21が閉じられる。 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, the external piping of the liquid pumping apparatus 1 has a working fluid inlet 11 connected to a high-pressure steam source, and a working fluid outlet 13 connected to a steam circulation pipe. 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). When there is no condensate in the liquid reservoir space 10 of the liquid pumping apparatus 1 of the present 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 pumping liquid inlet 16 to the liquid pumping device 1 and accumulates in the liquid reservoir space 10. When the float 3 rises due to the condensate accumulated in the liquid reservoir space 10, the float arm 34 rotates clockwise about the swing shaft 35, and the first shaft 39, which is a connecting portion with the coil spring 38, moves upward. To the extension line of the line connecting the swing shaft 35 and the second shaft 41, the coil spring 38 is compressed and deformed. When the float 3 further floats and the first shaft 39 exceeds the extension of the line connecting the oscillating shaft 35 and the second shaft 41, the coil spring 38 suddenly recovers from deformation and the sub arm 37 is counterclockwise. The connecting shaft 45 is snapped upward by rotating in the turning direction. As a result, the power transmission shaft 28 connected to the connection shaft 45 snaps upward, and 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、フロートアーム34が揺動軸35を中心に反時計回り方向に回転し、コイルバネ38との連結部である第1の軸39が下方に移動して揺動軸35と第2の軸41を結ぶ線の延長線上に近付き、コイルバネ38が圧縮変形する。そしてフロート3が更に降下して第1の軸39が揺動軸35と第2の軸41を結ぶ線の延長線上を越えると、コイルバネ38が急激に変形を回復し、副アーム37が時計回り方向に回転して連結軸45が下方にスナップ移動する。その結果、連結軸45に連結された動力伝達軸28が下側にスナップ移動し、給気弁20が閉じられると共に排気弁21が開かれる。 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 becomes 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, and the float arm 34 rotates counterclockwise around the swing shaft 35, which is a connecting portion with the coil spring 38. The first shaft 39 moves downward and approaches an extended line connecting the swing shaft 35 and the second shaft 41, and the coil spring 38 is compressed and deformed. When the float 3 further descends and the first shaft 39 exceeds the extension of the line connecting the swing shaft 35 and the second shaft 41, the coil spring 38 suddenly recovers from deformation and the sub arm 37 rotates clockwise. The connecting shaft 45 snaps downward by rotating in the direction. As a result, the power transmission shaft 28 coupled to the coupling shaft 45 snaps downward, closing the air supply valve 20 and opening the exhaust valve 21.

本発明は、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復水圧送装置に限らず、温水や燃料等の液体を圧送する液体圧送装置に利用することができる。   The present invention is not limited to a condensate pressure feeding device that sends condensate generated in various steam using devices to a boiler or a waste heat utilization place, but can also be used in a liquid pressure feeding device that pumps liquid such as hot water or fuel.

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
18 下部昇降棒
19a 上部案内部材
19b 下部案内部材
20 給気弁
21 排気弁
23 給気弁体
DESCRIPTION OF SYMBOLS 1 Liquid pumping apparatus 2 Sealed 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 18 Lower lift bar 19a Upper guide member 19b Lower guide member 20 Supply valve 21 Exhaust valve 23 Supply valve body

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、密閉容器内に溜った液体の液面の高さに応じて作動流体導入口の給気弁と作動流体排出口の排気弁の開閉を切り換えて、初めに排気弁を開き給気弁を閉じて液体流入口から液体を流入させ、次いで排気弁を閉じ給気弁を開いて密閉容器内に溜った液体を液体排出口から圧送する液体圧送装置において、給気弁の給気弁体に下部昇降棒を一体的に取り付けて、下部昇降棒を上部案内部材及び下部案内部材で上下に案内することを特徴とする液体圧送装置。 The closed container is provided with a working fluid inlet, a working fluid outlet, a liquid inlet and a liquid outlet, and the air supply valve of the working fluid inlet is operated according to the liquid level of the liquid accumulated in the sealed container. Switching the opening and closing of the exhaust valve at the fluid discharge port, first opening the exhaust valve and closing the air supply valve to allow liquid to flow in from the liquid inlet, then closing the exhaust valve and opening the air supply valve to collect in the sealed container In a liquid pumping device that pumps liquid from a liquid discharge port, a lower lift bar is integrally attached to a supply valve body of a supply valve, and the lower lift bar is guided up and down by an upper guide member and a lower guide member. A liquid pumping device.
JP2009119261A 2009-05-15 2009-05-15 Liquid pumping device Active JP5405896B2 (en)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6458888A (en) * 1987-08-31 1989-03-06 Maezawa Kogyo Air valve for sewage
JP2008309285A (en) * 2007-06-15 2008-12-25 Tlv Co Ltd Liquid pumping device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6458888A (en) * 1987-08-31 1989-03-06 Maezawa Kogyo Air valve for sewage
JP2008309285A (en) * 2007-06-15 2008-12-25 Tlv Co Ltd Liquid pumping device

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