JP5274973B2

JP5274973B2 - Liquid pumping device

Info

Publication number: JP5274973B2
Application number: JP2008266901A
Authority: JP
Inventors: 知美久保
Original assignee: Tlv Co Ltd
Current assignee: Tlv Co Ltd
Priority date: 2008-10-15
Filing date: 2008-10-15
Publication date: 2013-08-28
Anticipated expiration: 2028-10-15
Also published as: JP2010096069A

Abstract

<P>PROBLEM TO BE SOLVED: To provide a liquid forcibly feeding device preventing operating vapor introduced from an operating vapor introducing port into a sealed vessel from being turned in the upstream side of an inflow-side check valve by promptly closing the inflow-side check valve when an exhaust valve is closed and an air supply valve is opened. <P>SOLUTION: The air supply valve 20 is provided in the operating vapor introducing port 11, the exhaust valve 21 is provided in an operating vapor discharge opening 13, the inflow-side check valve 62 allowing only a liquid flow to the sealed vessel 2 is provided in a liquid inflow opening 16, and a forcibly-feeding-side check valve 63 allowing only a fluid flow to a liquid forcibly feeding destination is provided in a liquid discharge opening 17. A snap mechanism 5 is operated according to the upward movement and downward movement of a float 3 arranged in the sealed vessel 2 to snappingly move an auxiliary arm 52, thereby switching the opening/closing of the air supply valve 20 and exhaust valve 21 which are coupled to a power transmission shaft 28. When the exhaust valve 21 is closed and the air supply valve 20 is opened by snap movement of the auxiliary arm 52, the inflow-side check valve 62 is driven to be closed by the auxiliary arm 52. <P>COPYRIGHT: (C)2010,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、密閉容器に作動蒸気導入口と作動蒸気排出口と液体流入口及び液体排出口が設けられ、作動蒸気導入口に給気弁が設けられ、作動蒸気排出口に排気弁が設けられ、液体流入口に密閉容器への液体の流れだけを許容する流入側逆止弁が設けられ、液体排出口に液体圧送先への流体の流れだけを許容する圧送側逆止弁が設けられ、密閉容器内にフロートと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、給気弁と排気弁が動力伝達軸を介して副アームに連結され、フロートの昇降に応じてスナップ機構を動作させて副アームをスナップ移動させることにより、給気弁と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ることにより流入側逆止弁を介して液体を密閉容器内に流入させ、次いで排気弁を閉じ給気弁を開くことにより密閉容器内に溜った液体を圧送側逆止弁を介して液体圧送先へ圧送するものである。 In a conventional liquid pumping device, a closed container is provided with a working steam inlet, a working steam outlet, a liquid inlet and a liquid outlet, a supply valve is provided at the working steam inlet, and an exhaust valve is provided at the working steam outlet. An inlet check valve that allows only the flow of liquid to the sealed container at the liquid inlet, and a pressure check valve that allows only the fluid flow to the liquid destination at the liquid outlet. A float and a snap mechanism are provided in the sealed container, and the snap mechanism is supported by the float arm, a swing shaft supported in the sealed container, a float arm and a sub arm rotating around the swing shaft, and the float arm. And a second shaft supported by the sub-arm, and a spring attached between the first and second shafts, the float being connected to the float arm, The exhaust valve is connected to the sub arm via the power transmission shaft. By operating the snap mechanism in response to the lift of the float and moving the sub arm to snap, the supply valve and exhaust valve are switched between open and closed, and the exhaust valve is opened first and then the supply valve is closed to check the inflow side. Liquid is allowed to flow into the sealed container through the valve, and then the exhaust valve is closed and the air supply valve is opened to pump the liquid accumulated in the sealed container to the liquid pumping destination through the pressure check valve. .

上記従来の液体圧送装置は、排気弁を閉じ給気弁を開いたときに、流入側逆止弁の閉弁が遅れて作動蒸気導入口から密閉容器内に導入された作動蒸気の一部が流入側逆止弁の上流側に回り込むために、流入側逆止弁の上流側の蒸気使用装置等の負荷側が真空の場合、流入側逆止弁の上流側に回り込んだ蒸気が急凝縮してハンマを起こす問題点があった。
特開平８−１４５２９０ In the conventional liquid pumping device, when the exhaust valve is closed and the air supply valve is opened, a part of the working steam introduced into the sealed container from the working steam inlet is delayed due to the closing of the inflow check valve. If the load side of the steam using device, etc., upstream of the inflow side check valve is evacuated in order to circulate upstream of the inflow side check valve, the steam that has circulated upstream of the inflow side check valve will condense rapidly. There was a problem that caused a hammer.
JP-A-8-145290

解決しようとする課題は、排気弁を閉じ給気弁を開いたときに、流入側逆止弁を素早く閉弁させて作動蒸気導入口から密閉容器内に導入された作動蒸気が流入側逆止弁の上流側に回り込むことのない、液体圧送装置を提供することである。 The problem to be solved is that when the exhaust valve is closed and the air supply valve is opened, the inflow side check valve is quickly closed, and the working steam introduced from the working steam inlet into the sealed container is inflow side check To provide a liquid pumping device that does not wrap around the upstream side of the valve.

本発明は、密閉容器に作動蒸気導入口と作動蒸気排出口と液体流入口及び液体排出口が設けられ、作動蒸気導入口に給気弁が設けられ、作動蒸気排出口に排気弁が設けられ、液体流入口に密閉容器への液体の流れだけを許容する流入側逆止弁が設けられ、液体排出口に液体圧送先への流体の流れだけを許容する圧送側逆止弁が設けられ、密閉容器内にフロートと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、給気弁と排気弁が動力伝達軸を介して副アームに連結され、フロートの昇降に応じてスナップ機構を動作させて副アームをスナップ移動させることにより、給気弁と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ることにより流入側逆止弁を介して液体を密閉容器内に流入させ、次いで排気弁を閉じ給気弁を開くことにより密閉容器内に溜った液体を圧送側逆止弁を介して液体圧送先へ圧送する液体圧送装置において、副アームのスナップ移動により排気弁を閉じ給気弁を開いたときに副アームで流入側逆止弁を閉じるように駆動することを特徴とする。 In the present invention, the closed vessel is provided with a working steam inlet, a working steam outlet, a liquid inlet and a liquid outlet, a supply valve is provided at the working steam inlet, and an exhaust valve is provided at the working steam outlet. The liquid inlet has an inflow check valve that allows only the flow of liquid to the sealed container, and the liquid discharge port has a pressure check valve that only allows the flow of fluid to the liquid pressure destination. A float and a snap mechanism are incorporated in the sealed container. The snap mechanism includes a swing shaft supported in the sealed container, a float arm and a sub arm rotating around the swing shaft, and a first supported by the float arm. 1, a second shaft supported by the sub-arm, and a spring attached between the first and second shafts, the float is connected to the float arm, and the air supply valve and the exhaust valve are Connected to the sub arm via the power transmission shaft, By operating the snap mechanism in response to descending, the sub arm is snapped to switch between opening and closing of the air supply valve and exhaust valve, and by opening the exhaust valve and closing the air supply valve, the inflow check valve is opened. In the liquid pumping device that pumps the liquid accumulated in the sealed container by closing the exhaust valve and then opening the air supply valve to the liquid pumping destination via the pressure check valve, When the exhaust valve is closed by the snap movement of the sub arm and the air supply valve is opened, the sub arm is driven to close the inflow check valve.

本発明は、副アームのスナップ移動により排気弁を閉じ給気弁を開いたときに副アームで流入側逆止弁を閉じるように駆動することにより、流入側逆止弁を素早く開弁させて作動蒸気導入口から密閉容器内に導入された作動蒸気が流入側逆止弁の上流側に回り込むことを防止でき、ハンマを起こすことがないという優れた効果を生じる。 In the present invention, when the exhaust valve is closed by the snap movement of the sub arm and the air supply valve is opened, the inflow side check valve is quickly opened by driving the sub arm to close the inflow side check valve. It is possible to prevent the working steam introduced into the sealed container from the working steam introduction port from flowing into the upstream side of the inflow side check valve and to produce an excellent effect of not causing a hammer.

本発明の液体圧送装置は、副アームのスナップ移動により排気弁を閉じ給気弁を開いたときに副アームで流入側逆止弁を閉じるように駆動するものである。そのため、排気弁を閉じ給気弁を開いたときに流入側逆止弁を素早く閉じることができ、作動蒸気導入口から密閉容器内に導入された作動蒸気が流入側逆止弁の上流側に回り込むことを防止できるので、ハンマを起こすことがない。 The liquid pumping apparatus of the present invention is driven to close the inflow side check valve with the sub arm when the exhaust valve is closed and the air supply valve is opened by the snap movement of the sub arm. Therefore, when the exhaust valve is closed and the air supply valve is opened, the inflow check valve can be quickly closed, and the working steam introduced into the sealed container from the working steam introduction port is placed upstream of the inflow check valve. Since it can prevent wrapping around, it will not cause hammer.

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には作動蒸気導入口１１，作動蒸気排出口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 FIG. 1). 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 steam inlet 11, a working steam outlet 13, a liquid inlet 16, and a liquid outlet 17.

作動蒸気導入口１１の内側に給気弁２０が取り付けられ、作動蒸気排出口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２０の弁ケース２２の先端は作動蒸気導入口１１の中にねじ込まれている。弁体２３は半球状で作動蒸気導入口１１側にあり、昇降棒２４の上端に一体に取り付けられている。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の下端はピンで動力伝達軸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 intake valve 20 is attached inside the working steam inlet 11, and an exhaust valve 21 is attached inside the working steam outlet 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 so as to communicate the above-described through holes with the outside. The tip of the valve case 22 of the air supply valve 20 is screwed into the working steam inlet 11. The valve body 23 is hemispherical, is on the working steam inlet 11 side, and is integrally attached to the upper end of the elevating rod 24. The lifting / lowering rod 24 passes through the through hole of the valve case 22 to the closed container 2 side 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, 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. Is. The lower end of the elevating bar 31 is connected to the power transmission shaft 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「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 formed by bending a plate into a “U” shape, the two plates are opposed in parallel, and the float 3 is coupled to the bent portion. A shaft 40 is attached to the other end of the lever 34. 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の中間部が回転可能に支持されている。副アーム５２は平行に対向した２枚の板よりなり、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の中間左端部に軸６０が掛け渡され、動力伝達軸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６１が開けられている。 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. 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 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 intermediate portion of the sub arm 52 is rotatably supported on the swing shaft 37. The sub arm 52 is composed of two plates facing each other in parallel, and the lower end portion spans a swing shaft 37 and a second shaft 59 parallel to the first shaft 58, and the spring receiving member 56 is a second member. The shaft 59 is rotatably supported. A compressed coil spring 54 is attached between the spring receiving members 55 and 56. A shaft 60 is stretched over the middle left end of the sub arm 52, and the lower end of the power transmission shaft 28 is connected. A window 61 is opened in the float arm 51 so as not to hinder the movement of the shaft 60.

蒸気使用装置等の負荷に接続される液体流入口１６に外部から液体溜空間１０に向かって開く流入側逆止弁６２が設けられる。ボイラー等の液体圧送先へ接続される液体排出口１７に液体溜空間１０から外部に向かって開く圧送側逆止弁６３が設けられる。流入側逆止弁６２は液体流入口１６の内側に位置し、上部がピン６４により回転可能に蓋部８に取り付けられている。流入側逆止弁６２の下端に左方向に伸びる左延長部が形成され、副アーム５２が時計回り方向にスナップ移動したときに副アーム５２の上端下面が流入側逆止弁６２の左延長部の上面に当接するようになっている。そのため、副アーム５２のスナップ移動により動力伝達軸２８を介して排気弁２１が閉じられ給気弁２０が開かれるときに、流入側逆止弁６２が閉じられるように駆動される。 An inflow check valve 62 that opens from the outside toward the liquid storage space 10 is provided at the liquid inlet 16 connected to a load such as a steam using device. A pressure-feed-side check valve 63 that opens outward from the liquid reservoir space 10 is provided at the liquid discharge port 17 connected to a liquid pressure-feed destination such as a boiler. The inflow side check valve 62 is located inside the liquid inflow port 16, and the upper part is attached to the lid portion 8 so as to be rotatable by a pin 64. A left extension extending leftward is formed at the lower end of the inflow side check valve 62, and when the subarm 52 snaps clockwise, the upper lower surface of the subarm 52 extends to the left extension of the inflow side check valve 62. It comes to contact | abut to the upper surface. Therefore, when the exhaust valve 21 is closed via the power transmission shaft 28 by the snap movement of the sub arm 52 and the air supply valve 20 is opened, the inflow side check valve 62 is driven to be closed.

次に本実施例の液体圧送装置１の作用について説明する。まず液体圧送装置１の外部配管は作動蒸気導入口１１が高圧の蒸気源に接続され、作動蒸気排出口１３は蒸気循環配管に接続される。液体流入口１６は蒸気使用装置等の負荷に接続され、液体排出口１７は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. First, the external piping of the liquid pumping apparatus 1 has a working steam inlet 11 connected to a high-pressure steam source, and a working steam discharge port 13 connected to a steam circulation pipe. The liquid inlet 16 is connected to a load such as a steam using device, and the liquid outlet 17 is connected to a liquid pressure destination such as a boiler.

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、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。また、流入側逆止弁６２が開かれ、圧送側逆止弁６３が閉じられている。そして、蒸気使用装置等の負荷内で復水が発生すると、復水は水頭圧により圧送液体流入口１６から密閉容器２内に流下して、液体溜空間１０内に溜る。密閉容器２内の水位の上昇に伴ってフロート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。そして密閉容器２内の水位の上昇に伴ってフロート３が更に浮上して密閉容器２内の水位がＷに達し、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に連結された動力伝達軸２８が上側に移動し、給気弁２０が開かれ排気弁２１が閉じられると共に流入側逆止弁６２が閉じられる。そのため、排気弁２１を閉じ給気弁２０を開いたときに流入側逆止弁６２を素早く閉じることができ、作動蒸気導入口１１から密閉容器２内に導入された作動蒸気が流入側逆止弁６２の上流側に回り込むことを防止できるので、ハンマを起こすことがない。 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. At this time, the supply valve 20 in the switching valve 4 is closed and the exhaust valve 21 is opened. Further, the inflow side check valve 62 is opened, and the pressure-feed side check valve 63 is closed. When condensate is generated in a load such as a steam using device, the condensate flows down from the pumped liquid inflow port 16 into the sealed container 2 due to the water head pressure and accumulates in the liquid reservoir space 10. When the float 3 rises as the water level in the sealed container 2 rises, the lever 34 rotates clockwise about the shaft 35, and in conjunction with the downward movement of the shaft 40 due to the rotation of the lever 34, the float 3 floats. 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, as the water level in the sealed container 2 rises, the float 3 further rises, the water level in the sealed container 2 reaches W, and the first shaft 58 comes from the line connecting the swing shaft 37 and the second shaft 59. When the coil spring 54 is also moved rightward, the coil spring 54 suddenly recovers its deformation, and the sub arm 52 snaps in the clockwise direction. As a result, the power transmission shaft 28 connected to the shaft 60 of the sub arm 52 moves upward, the air supply valve 20 is opened, the exhaust valve 21 is closed, and the inflow side check valve 62 is closed. Therefore, when the exhaust valve 21 is closed and the air supply valve 20 is opened, the inflow side check valve 62 can be quickly closed, and the working steam introduced into the sealed container 2 from the working steam inlet 11 is inflow side check. Since it can be prevented that the valve 62 goes around to the upstream side, the hammer does not occur.

給気弁２０が開かれ排気弁２１が閉じられると共に流入側逆止弁６２が閉じられると、作動蒸気導入口１１から密閉容器２内に高圧蒸気が導入され、内部の圧力が上昇し、圧送側逆止弁６３が開かれる。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から圧送側逆止弁６３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密閉容器２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に連結された動力伝達軸２８が下側に移動し、給気弁２０が閉じられると共に排気弁２１が開かれる。給気弁２０が閉じられると共に排気弁２１が開かれると、密閉容器２内の圧力が低下し、流入側逆止弁６２が開かれると共に圧送側逆止弁６３が閉じられる。 When the air supply valve 20 is opened, the exhaust valve 21 is closed, and the inflow side check valve 62 is closed, high-pressure steam is introduced into the sealed container 2 from the working steam introduction port 11, the internal pressure rises, and the pressure feed The side check valve 63 is opened. The condensate collected in the liquid storage space 10 is pushed by the vapor pressure and discharged from the pumped liquid discharge port 17 to the external boiler or the waste heat utilization device through the pumping side check valve 63. When the water level in the sealed container 2 decreases due to the discharge of condensate, the float 3 descends, the lever 34 rotates counterclockwise about the shaft 35, and the shaft 40 moves upward due to the rotation of the lever 34. In conjunction with this, the float arm 51 rotates in the clockwise direction around the swing shaft 37, and the first shaft 58, which is a connecting portion with the coil spring 54, moves to the left to move the swing shaft 37 and the second shaft. The coil spring 54 is compressed and deformed. 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 moves to the left from the line connecting the two shafts 59, the coil spring 54 rapidly recovers from the deformation, and the sub arm 52 snaps in the counterclockwise direction. As a result, the power transmission shaft 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. When the air supply valve 20 is closed and the exhaust valve 21 is opened, the pressure in the hermetic container 2 decreases, the inflow side check valve 62 is opened, and the pressure feed side check valve 63 is closed.

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.

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作動蒸気導入口
１３作動蒸気排出口
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
６２流入側逆止弁
６３圧送側逆止弁
Ｗ密閉容器内の水位
DESCRIPTION OF SYMBOLS 1 Liquid pumping apparatus 2 Airtight container 3 Float 4 Switching valve 5 Snap mechanism 10 Liquid reservoir space 11 Working steam inlet 13 Working steam outlet 16 Liquid inlet 17 Liquid outlet 20 Supply valve 21 Exhaust valve 28 Power transmission shaft 37 Swing Dynamic shaft 51 Float arm 52 Sub arm 54 Coil spring 58 First shaft 59 Second shaft 62 Inflow check valve 63 Pressure check valve W Water level in the sealed container

Claims

密閉容器に作動蒸気導入口と作動蒸気排出口と液体流入口及び液体排出口が設けられ、作動蒸気導入口に給気弁が設けられ、作動蒸気排出口に排気弁が設けられ、液体流入口に密閉容器への液体の流れだけを許容する流入側逆止弁が設けられ、液体排出口に液体圧送先への流体の流れだけを許容する圧送側逆止弁が設けられ、密閉容器内にフロートと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、給気弁と排気弁が動力伝達軸を介して副アームに連結され、フロートの昇降に応じてスナップ機構を動作させて副アームをスナップ移動させることにより、給気弁と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ることにより流入側逆止弁を介して液体を密閉容器内に流入させ、次いで排気弁を閉じ給気弁を開くことにより密閉容器内に溜った液体を圧送側逆止弁を介して液体圧送先へ圧送する液体圧送装置において、副アームのスナップ移動により排気弁を閉じ給気弁を開いたときに副アームで流入側逆止弁を閉じるように駆動することを特徴とする液体圧送装置。 The closed container is provided with a working steam inlet, a working steam outlet, a liquid inlet and a liquid outlet, a supply valve is provided at the working steam inlet, an exhaust valve is provided at the working steam outlet, and a liquid inlet An inlet check valve that allows only the flow of liquid to the sealed container is provided, and a pressure check valve that allows only the flow of fluid to the liquid pressure destination is provided at the liquid discharge port. A float and a snap mechanism are incorporated, and the snap mechanism includes a swing shaft supported in the sealed container, a float arm and a sub arm rotating around the swing shaft, and a first shaft supported by the float arm. And a second shaft supported by the sub arm, and a spring attached between the first and second shafts, the float is connected to the float arm, and the air supply valve and the exhaust valve serve as the power transmission shaft. Connected to the sub arm via the float By operating the snap mechanism and snapping the sub arm, the supply valve and exhaust valve are switched between open and closed, and first the exhaust valve is opened and the supply valve is closed to supply liquid via the inflow check valve. In a liquid pumping device that pumps the liquid accumulated in the sealed container by inflowing into the sealed container and then closing the exhaust valve and opening the air supply valve to the liquid pumping destination via the pressure check valve, the sub arm snaps. A liquid pressure-feeding device, characterized in that when the exhaust valve is closed by movement and the air supply valve is opened, the auxiliary arm is driven to close the inflow check valve.