JP2008057399A - Non-displacement pump - Google Patents

Non-displacement pump Download PDF

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JP2008057399A
JP2008057399A JP2006234315A JP2006234315A JP2008057399A JP 2008057399 A JP2008057399 A JP 2008057399A JP 2006234315 A JP2006234315 A JP 2006234315A JP 2006234315 A JP2006234315 A JP 2006234315A JP 2008057399 A JP2008057399 A JP 2008057399A
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chamber
suction
liquid
blade
priming
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JP4819621B2 (en
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Takashi Zushi
隆 図司
Toshihiro Yokota
敏弘 横田
Ikuo Takada
育男 高田
Hiroo Tochikawa
博夫 栩川
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NISHIGAKI PUMP SEIZO KK
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NISHIGAKI PUMP SEIZO KK
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Abstract

<P>PROBLEM TO BE SOLVED: To easily secure a priming into a suction passage and a blade chamber in a non-displacement pump. <P>SOLUTION: This non-displacement pump can perform a liquid pumping operation for discharging a conveying liquid sucked from a suction passage into a blade chamber 2 by an impeller 3 in the blade chamber 2 from the blade chamber 2 into a discharge passage 7 and a priming operation. The suction passage 15 comprises a suction chamber 16 facing the blade chamber 2, a liquid storage chamber 20 partitioned from the suction chamber 16 by a partition wall 19 and communicating with the suction chamber through a first communication hole 21, and a supply chamber 18 communicating with the suction chamber 16 through a suction hole 17 and communicating with the liquid storage chamber 20 through a second communication hole 22. When a conveying liquid flows reversely from the supply chamber 18 in the suction passage 15, the conveying liquid mainly in the suction chamber 16 and the blade chamber 2 flows reversely from the suction hole 17. Therefore, the conveying liquid in the liquid storage chamber 20 partitioned from the suction chamber 16 by the partition wall 19 is difficult to flow reversely, and easily remains in the liquid storage chamber 20. The liquid remaining in the liquid storage chamber 20 returns easily from the first communication hole 21 to the blade chamber through the suction chamber 16, and a priming can be easily secured in the suction chamber 16 and the blade chamber 2. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は呼び水作用を行うことができる非容積形ポンプにおいて、吸込路の改良に関するものである。   The present invention relates to an improvement in a suction path in a non-positive displacement pump capable of performing a priming action.

従来、下記特許文献１〜２に記載された自吸式ポンプにおいては、いずれも、翼室内の羽根車により吸込路から翼室へ吸入された搬送液を翼室から気液分離路を経て吐出路へ吐出する揚液作動のほかに、羽根車により翼室内の自吸液を気液分離路へ孔から渦流として噴出することにより翼室内に戻して循環させながら気液分離する自吸作動を行うことができる。
特開２０００−１７９４８７号公報 特開２００２−２１７６１号公報 Conventionally, in all of the self-priming pumps described in Patent Documents 1 and 2 below, the carrier liquid sucked from the suction passage into the blade chamber by the impeller in the blade chamber is discharged from the blade chamber through the gas-liquid separation passage. In addition to the pumping operation that discharges to the road, the self-priming operation that separates the gas and liquid while circulating it back to the blade chamber by ejecting the self-priming liquid in the blade chamber as a vortex from the hole to the gas-liquid separation channel by the impeller It can be carried out.
JP 2000-179487 A Japanese Patent Laid-Open No. 2002-217161

上記特許文献１では、吸込路に逆止弁が取り付けられて始動に必要な呼び水を確保することができるようになっている。しかし、逆止弁の取付けにより吸込路の構造が複雑になる問題があった。   In the said patent document 1, the non-return valve is attached to the suction path, and the priming water required for a start can be ensured now. However, there is a problem that the structure of the suction passage becomes complicated by the installation of the check valve.

一方、上記特許文献２では、このような逆止弁の代わりに、吸込路に貯液空間（滞留部４０）を設けて呼び水を確保することができるようになっている。しかし、この貯液空間は搬送液の供給経路内にあってその供給経路を兼用しているため、停止時に搬送液が逆流した際にこの貯液空間内の搬送液も逆流し易くなり、貯液空間内に搬送液が残りにくくなって呼び水を確保することが難しくなるおそれがあった。   On the other hand, in the said patent document 2, instead of such a non-return valve, a liquid storage space (retention part 40) is provided in the suction passage so that priming water can be secured. However, since the liquid storage space is in the supply path of the carrier liquid and also serves as the supply path, the carrier liquid in the liquid storage space is likely to flow backward when the carrier liquid flows backward during stoppage. There is a fear that it becomes difficult to secure priming water because the carrier liquid hardly remains in the liquid space.

この発明は、非容積形ポンプにおいて吸込路や翼室に呼び水を確保し易くすることを目的としている。   An object of the present invention is to make it easy to secure priming water in a suction passage and a blade chamber in a non-positive displacement pump.

後記実施形態の図面（図１〜４）の符号を援用して本発明を説明する。
請求項１の発明にかかる非容積形ポンプは下記のように構成されている。
この非容積形ポンプにおいては、翼室２内の羽根車３により吸込路１５から翼室２へ吸入された搬送液を翼室２から吐出路７へ吐出する揚液作動のほかに、呼び水作用を行うことができる。前記吸込路１５には、翼室２に搬送液を吸入する供給経路１６，１７，１８のほかに、この供給経路１６，１７，１８に対し隔壁１９により区画されて翼室２に貯液を呼び水として供給する貯液室２０を備えている。例えば、この貯液室２０には、供給経路１６，１７，１８の下流側に連通する第一の連通口２１と、供給経路１６，１７，１８の上流側に連通する第二の連通口２２とを設け、この第一の連通口２１における開口面積はこの第二の連通口２２における開口面積よりも大きく設定されている。 The present invention will be described with reference to the reference numerals of the drawings (FIGS. 1 to 4) of the embodiments described later.
The non-positive displacement pump according to the invention of claim 1 is configured as follows.
In this non-volumetric pump, in addition to the pumping operation for discharging the carrier liquid sucked from the suction passage 15 to the blade chamber 2 by the impeller 3 in the blade chamber 2 to the discharge passage 7, a priming action It can be performed. In addition to the supply paths 16, 17, and 18 for sucking the carrier liquid into the blade chamber 2, the suction path 15 is partitioned by the partition wall 19 with respect to the supply paths 16, 17, and 18 to store the liquid in the blade chamber 2. A liquid storage chamber 20 is provided as priming water. For example, in the liquid storage chamber 20, a first communication port 21 that communicates with the downstream side of the supply paths 16, 17, and 18 and a second communication port 22 that communicates with the upstream side of the supply paths 16, 17, and 18. The opening area of the first communication port 21 is set larger than the opening area of the second communication port 22.

請求項１の発明では、供給経路１６，１７，１８に対し隔壁１９により区画した貯液室２０を設けたので、貯液室２０の搬送液が逆流しにくくなり、貯液室２０に搬送液が残り易い。   In the first aspect of the present invention, since the liquid storage chamber 20 partitioned by the partition wall 19 is provided for the supply paths 16, 17, and 18, the transport liquid in the liquid storage chamber 20 becomes difficult to flow backward, and the transport liquid is transferred to the liquid storage chamber 20. Is likely to remain.

請求項２の発明にかかる非容積形ポンプは下記のように構成されている。
この非容積形ポンプにおいては、翼室２内の羽根車３により吸込路１５から翼室２へ吸入された搬送液を翼室２から吐出路７へ吐出する揚液作動のほかに、呼び水作用を行うことができる。前記吸込路１５は、翼室２に面する吸込室１６と、この吸込室１６に対し隔壁１９により区画されて第一の連通口２１を介して連通する貯液室２０と、この吸込室１６に対し吸込口１７を介して連通するとともにこの貯液室２０に対し第二の連通口２２を介して連通する供給室１８とを備えている。 The non-positive displacement pump according to the invention of claim 2 is configured as follows.
In this non-volumetric pump, in addition to the pumping operation for discharging the carrier liquid sucked from the suction passage 15 to the blade chamber 2 by the impeller 3 in the blade chamber 2 to the discharge passage 7, a priming action It can be performed. The suction passage 15 includes a suction chamber 16 facing the blade chamber 2, a liquid storage chamber 20 that is partitioned by a partition wall 19 from the suction chamber 16 and communicates via a first communication port 21, and the suction chamber 16. And a supply chamber 18 that communicates with the liquid storage chamber 20 via a second communication port 22.

請求項２の発明では、吸込室１６に対し隔壁１９により区画した貯液室２０を設けたので、貯液室２０の搬送液が逆流しにくくなり、貯液室２０に搬送液が残り易い。
請求項２の発明を前提とする請求項３の発明において、前記第二の連通口２２における開口面積は前記吸込口１７における開口面積よりも小さく設定されている。請求項３の発明では、吸込路１５において搬送液が供給室１８から逆流した際に主に吸込室１６や翼室２の搬送液が吸込口１７から逆流して貯液室２０には搬送液が残り易い。 In the second aspect of the present invention, since the liquid storage chamber 20 partitioned by the partition wall 19 is provided for the suction chamber 16, the transport liquid in the liquid storage chamber 20 is less likely to flow backward, and the transport liquid tends to remain in the liquid storage chamber 20.
In the invention of claim 3 based on the invention of claim 2, the opening area of the second communication port 22 is set smaller than the opening area of the suction port 17. In the invention of claim 3, when the carrier liquid flows backward from the supply chamber 18 in the suction passage 15, the carrier liquid mainly in the suction chamber 16 and the wing chamber 2 flows backward from the suction port 17 and flows into the liquid storage chamber 20. Is likely to remain.

請求項２または請求項３の発明を前提とする請求項４の発明において、前記第一の連通口２１における開口面積は前記第二の連通口２２における開口面積よりも大きく設定されている。請求項４の発明では、貯液室２０に残った貯液が第一の連通口２１から吸込室１６を通って翼室２に戻り易い。   In the invention of claim 4 based on claim 2 or claim 3, the opening area of the first communication port 21 is set larger than the opening area of the second communication port 22. In the invention of claim 4, the liquid remaining in the liquid storage chamber 20 easily returns from the first communication port 21 to the blade chamber 2 through the suction chamber 16.

請求項２または請求項３または請求項４の発明を前提とする請求項５の発明にかかる吸込路１５において、搬送液が供給室１８から逆流した状態で、第二の連通口２２から貯液室２０に流入した空気の圧力により、呼び水として貯液室２０に残った貯液が第一の連通口２１から吸込室１６を通って翼室２に戻る。請求項５の発明では、貯液室２０に残った貯液が第一の連通口２１から吸込室１６を通って翼室２に戻り易い。   In the suction passage 15 according to the invention of claim 5 based on the invention of claim 2, claim 3, or claim 4, the liquid is stored from the second communication port 22 in a state where the carrier liquid flows backward from the supply chamber 18. Due to the pressure of the air flowing into the chamber 20, the liquid remaining in the liquid storage chamber 20 as priming water returns from the first communication port 21 to the blade chamber 2 through the suction chamber 16. In the invention of claim 5, the liquid remaining in the liquid storage chamber 20 easily returns from the first communication port 21 to the blade chamber 2 through the suction chamber 16.

請求項１から請求項５のうちいずれかの請求項の発明を前提とする請求項６の発明においては、羽根車３により翼室２内の自吸液を循環させながら気液分離する自吸作動を行う。請求項６の発明では、請求項１から請求項５のうちいずれかの請求項の発明の効果を自吸ポンプにおいて発揮させることができる。   In the invention of claim 6 premised on the invention of any one of claims 1 to 5, the self-priming that performs gas-liquid separation while circulating the self-priming liquid in the blade chamber 2 by the impeller 3. Perform the operation. In the invention of claim 6, the effect of the invention of any one of claims 1 to 5 can be exhibited in the self-priming pump.

次に、請求項以外の技術的思想について実施形態の図面の符号を援用して説明する。
請求項６の発明を前提とする第７の発明においては、翼室２内の羽根車３により吸込路１５から翼室２へ吸入された搬送液を翼室２から気液分離路６を経て吐出路７へ吐出する揚液作動のほかに、羽根車３により翼室２内の自吸液を気液分離路６を通して翼室２内に戻して循環させながら気液分離する自吸作動を行うことができる。前記気液分離路６には、翼室内の自吸液を気液分離路６へ渦流（例えば主渦流）として噴出することができる主孔１１を設けるとともに、その主孔１１よりも上流側で翼室２内の自吸液を気液分離路６へ反発流（例えば主渦流の回転向きＸＦに対し逆向きに設定した回転向きＸＲを有する副渦流）として噴出することができる副孔１２を設け、その反発流により渦流を減衰させる。第７の発明では、副孔１２からの反発流により渦流を減衰させる減衰手段を採用したので、減衰手段が簡単になって気液分離路６内の形状を簡単にするとともに減衰手段の形成作業を容易にする。 Next, technical ideas other than the claims will be described with reference to the reference numerals in the drawings of the embodiments.
In the seventh invention based on the invention of claim 6, the carrier liquid sucked into the blade chamber 2 from the suction passage 15 by the impeller 3 in the blade chamber 2 passes through the gas-liquid separation path 6 from the blade chamber 2. In addition to the pumping operation for discharging to the discharge passage 7, the self-priming operation for separating the gas and liquid while circulating the self-priming liquid in the blade chamber 2 through the gas-liquid separation passage 6 and returning to the blade chamber 2 by the impeller 3. It can be carried out. The gas-liquid separation path 6 is provided with a main hole 11 through which self-priming liquid in the blade chamber can be ejected into the gas-liquid separation path 6 as a vortex (for example, a main vortex), and upstream of the main hole 11. A sub-hole 12 capable of ejecting the self-priming liquid in the blade chamber 2 as a repulsive flow (for example, a sub-vortex having a rotation direction XR set opposite to the rotation direction XF of the main vortex) to the gas-liquid separation path 6. It is provided and the vortex is attenuated by the repulsive flow. In the seventh invention, the damping means for damping the vortex by the repulsive flow from the sub-hole 12 is adopted, so that the damping means is simplified, the shape in the gas-liquid separation path 6 is simplified, and the damping means is formed. To make it easier.

本発明は非容積形ポンプにおいて吸込室１６や翼室２に呼び水を確保し易くすることができる。   The present invention can make it easy to secure priming water in the suction chamber 16 and the blade chamber 2 in a non-volumetric pump.

以下、本発明の一実施形態にかかる非容積形ポンプについて図面を参照して説明する。
図１に示す非容積形ポンプ（ターボ形ポンプ）は自吸式遠心ポンプ（自吸式うず巻ポンプ）であって、図３に示すケーシング１に設けられた翼室２内で羽根車３が主軸４を中心にして回転可能に支持されているとともに、その羽根車３の回転中心線４ａの方向の両側のうち一方の側で吸込カバー５がケーシング１に取り付けられている。このケーシング１においては、翼室２の外周の一側で気液分離路６が羽根車３の回転方向に沿って設けられて吐出路７に接続されている。この気液分離路６においては、翼室２内の底部２ａに導入口８が連通するととともに、翼室２内の天井部２ｂに隣接して配設された吐出路７に導出口９が連通し、その導入口８と導出口９との間で導出路１０が下方から上方へ延設されている。この導入口８と導出口９と導出路１０において内周面は円形状に形成されている。 Hereinafter, a non-positive displacement pump according to an embodiment of the present invention will be described with reference to the drawings.
The non-volumetric pump (turbo pump) shown in FIG. 1 is a self-priming centrifugal pump (self-priming centrifugal pump), and an impeller 3 is installed in a blade chamber 2 provided in the casing 1 shown in FIG. A suction cover 5 is attached to the casing 1 on one side of both sides of the impeller 3 in the direction of the rotation center line 4 a while being supported rotatably about the main shaft 4. In the casing 1, a gas-liquid separation path 6 is provided along the rotation direction of the impeller 3 on one side of the outer periphery of the blade chamber 2 and connected to the discharge path 7. In this gas-liquid separation path 6, the introduction port 8 communicates with the bottom 2 a in the blade chamber 2, and the outlet port 9 communicates with the discharge path 7 disposed adjacent to the ceiling portion 2 b in the blade chamber 2. In addition, a lead-out path 10 extends from the bottom to the top between the lead-in port 8 and the lead-out port 9. In the introduction port 8, the outlet port 9, and the outlet path 10, the inner peripheral surface is formed in a circular shape.

図３及び図４（ａ）に示すように、前記気液分離路６の導出口９には翼室２に面する側の壁６ａに主孔１１が翼室２との間で貫設されている。図３及び図４（ｂ）に示すように、前記気液分離路６の導出路１０には翼室２に面する側の壁６ａに副孔１２が翼室２との間で貫設されている。この主孔１１の噴出中心線１１ａ及び副孔１２の噴出中心線１２ａはいずれも導出口９及び導出路１０の内周面の接線方向に沿っているが、前記羽根車３の回転中心線４ａの方向Ｙの両側のうち壁６ａの一側に主孔１１が形成されているとともに壁６ａの他側に副孔１２が形成されている。ちなみに、この気液分離路６において、副孔１２の噴出中心線１２ａを含む横断面で区画されてその副孔１２に連続する内孔１３は、主孔１１の噴出中心線１１ａを含む横断面で区画されてその主孔１１に連続する内孔１４の下方領域Ｓに対し交差し、この両内孔１３，１４は所定距離Ｌだけ互いに離間している。前記主孔１１及び副孔１２については、機械加工しているが、鋳抜きにより成形してもよい。なお、前記翼室２内の羽根車３については、ボリュート式及び単段式であるが、ディフューザ式や多段式であってもよい。   As shown in FIG. 3 and FIG. 4A, a main hole 11 is provided in the outlet port 9 of the gas-liquid separation path 6 in the wall 6 a facing the blade chamber 2 between the main chamber 11 and the blade chamber 2. ing. As shown in FIGS. 3 and 4 (b), a sub-hole 12 is provided in the lead-out path 10 of the gas-liquid separation path 6 so as to penetrate the wall 6 a facing the blade chamber 2 between the gas chamber and the blade chamber 2. ing. The ejection center line 11a of the main hole 11 and the ejection center line 12a of the sub-hole 12 are both along the tangential direction of the inner peripheral surface of the outlet 9 and the outlet path 10, but the rotation center line 4a of the impeller 3 A main hole 11 is formed on one side of the wall 6a of both sides in the direction Y, and a sub-hole 12 is formed on the other side of the wall 6a. By the way, in this gas-liquid separation path 6, the inner hole 13 which is partitioned by a transverse section including the ejection center line 12 a of the sub-hole 12 and continues to the sub-hole 12 has a transverse section including the ejection center line 11 a of the main hole 11. Crossing the lower region S of the inner hole 14 which is partitioned by the main hole 11 and the inner holes 13 and 14 are separated from each other by a predetermined distance L. The main hole 11 and the sub hole 12 are machined, but may be formed by casting. The impeller 3 in the blade chamber 2 is a volute type or a single stage type, but may be a diffuser type or a multistage type.

前記吸込カバー５内に設けられた吸込路１５においては、主軸４の外周で翼室２の端面部２ｃに吸込室１６（供給経路）が面してこの端面部２ｃから斜め上方に延び、この吸込室１６の天井部１６ｂに対し吸込口１７（供給経路）を介して供給室１８（供給経路）が連通し、この吸込室１６及び供給室１８に対し隔壁１９により区画された貯液室２０が端面部２ｃ及び吸込室１６に対し前記羽根車３の回転中心線４ａの方向Ｙで並設されている。この貯液室２０の底部２０ａは端面部２ｃに隣接する吸込室１６の底部１６ａ（供給経路の下流側）に対し第一の連通口２１を介して連通し、この貯液室２０の天井部２０ｂはこの供給室１８（供給経路の上流側）に対し吸込口１７に隣接する第二の連通口２２を介して連通している。図２（ａ）（ｂ）に示すように、この第二の連通口２２における開口面積は、この吸込口１７における開口面積よりも小さく設定されている。また、この第一の連通口２１における開口面積は、この第二の連通口２２における開口面積よりも大きく設定されている。なお、前記吸込路１５については、片吸込式及び混流式であるが、両吸込式や半径流式であってもよい。   In the suction passage 15 provided in the suction cover 5, the suction chamber 16 (supply path) faces the end surface portion 2c of the blade chamber 2 on the outer periphery of the main shaft 4, and extends obliquely upward from the end surface portion 2c. A supply chamber 18 (supply path) communicates with the ceiling portion 16 b of the suction chamber 16 via a suction port 17 (supply path), and a liquid storage chamber 20 partitioned by a partition wall 19 with respect to the suction chamber 16 and the supply chamber 18. Are arranged side by side in the direction Y of the rotation center line 4a of the impeller 3 with respect to the end surface 2c and the suction chamber 16. The bottom 20a of the liquid storage chamber 20 communicates with the bottom 16a (downstream of the supply path) of the suction chamber 16 adjacent to the end surface portion 2c via the first communication port 21, and the ceiling of the liquid storage chamber 20 20 b communicates with the supply chamber 18 (upstream of the supply path) through a second communication port 22 adjacent to the suction port 17. As shown in FIGS. 2A and 2B, the opening area of the second communication port 22 is set smaller than the opening area of the suction port 17. The opening area of the first communication port 21 is set larger than the opening area of the second communication port 22. The suction path 15 is a single suction type or a mixed flow type, but may be a double suction type or a radial flow type.

さて、吸込路１５や翼室２に十分な呼び水が確保された状態で、羽根車３が回転すると、搬送液は、供給室１８から吸込口１７を通って吸込室１６に供給されるとともに、供給室１８から第二の連通口２２を通って貯液室２０に供給された後にその貯液室２０から第一の連通口２１を通って吸込室１６に供給され、その吸込室１６から端面部２ｃを通って翼室２に吸入される。翼室２内の搬送液は、翼室２から気液分離路６の導入口８と導出路１０と導出口９とを経て吐出路７へ吐出される。このような揚液作動のほかに、始動時には、羽根車３により翼室２内の自吸液（搬送液）を気液分離路６を通して翼室２内に戻して循環させながら気液分離する自吸作動を行う。すなわち、この自吸作動時には、翼室２内の自吸液が主孔１１から導出口９へ噴出されて内孔１４の内周面に沿った主渦流が発生するとともに、その主渦流よりも上流側で翼室２内の自吸液が副孔１２から導出路１０へ噴出されて内孔１３の内周面に沿った副渦流が発生し、その副渦流の回転向きＸＲは主渦流の回転向きＸＦに対し逆向きに設定されている。気液分離路６において副渦流は主渦流の下方領域Ｓに対し交差する。サイクロン効果によりこの主渦流から空気が吐出路７へ抜けるとともに、この主渦流は副孔１２の付近まで下がった後に副渦流に衝突して減衰される。一方、停止時に、吸込路１５においては、まず翼室２や吸込室１６内の搬送液が吸込口１７を通って供給室１８から逆流し、その逆流に伴い真空度が破壊されて生じた空気が第二の連通口２２から貯液室２０に流入するとともに、その空気の圧力により、呼び水として貯液室２０に残った貯液が第一の連通口２１から吸込室１６を通って翼室２に戻る。   Now, when the impeller 3 rotates in a state where sufficient priming water is secured in the suction passage 15 and the blade chamber 2, the carrier liquid is supplied from the supply chamber 18 to the suction chamber 16 through the suction port 17, and After being supplied from the supply chamber 18 through the second communication port 22 to the liquid storage chamber 20, it is supplied from the liquid storage chamber 20 through the first communication port 21 to the suction chamber 16, and from the suction chamber 16 to the end face The air is sucked into the blade chamber 2 through the portion 2c. The carrier liquid in the blade chamber 2 is discharged from the blade chamber 2 to the discharge path 7 through the inlet 8, the outlet 10 and the outlet 9 of the gas-liquid separation path 6. In addition to such pumping operation, at the time of start-up, the impeller 3 performs gas-liquid separation while circulating the self-priming liquid (carrier liquid) in the blade chamber 2 through the gas-liquid separation path 6 and returning it to the blade chamber 2. Performs self-priming operation. That is, at the time of this self-priming operation, the self-priming liquid in the blade chamber 2 is ejected from the main hole 11 to the outlet port 9 to generate a main vortex along the inner peripheral surface of the inner hole 14. On the upstream side, the self-priming liquid in the blade chamber 2 is ejected from the sub-hole 12 to the outlet passage 10 to generate a sub-vortex along the inner peripheral surface of the inner hole 13, and the rotation direction XR of the sub-vortex is the main vortex The direction of rotation is set opposite to that of XF. In the gas-liquid separation path 6, the auxiliary vortex crosses the lower region S of the main vortex. The cyclone effect causes air to escape from the main vortex to the discharge path 7, and the main vortex flows to the vicinity of the sub-hole 12 and then collides with the sub-vortex and is attenuated. On the other hand, at the time of stoppage, in the suction passage 15, first, the carrier liquid in the blade chamber 2 and the suction chamber 16 flows backward from the supply chamber 18 through the suction port 17, and the air generated by breaking the vacuum due to the reverse flow. Flows into the liquid storage chamber 20 from the second communication port 22 and, due to the pressure of the air, the liquid remaining in the liquid storage chamber 20 as priming water passes through the suction chamber 16 from the first communication port 21 and the blade chamber. Return to 2.

従って、本実施形態では、吸込路１５において搬送液が供給室１８から逆流した際に主に吸込室１６や翼室２の搬送液が吸込口１７から逆流し、吸込室１６に対し隔壁１９により区画した貯液室２０の搬送液が逆流しにくくなり、貯液室２０に搬送液が残り易くなるとともに、貯液室２０に残った貯液が第一の連通口２１から吸込室１６を通って翼室２に戻り易くなり、吸込室１６や翼室２に呼び水を確保し易くなる。また、本実施形態では、副孔１２からの副渦流により主渦流を減衰させる減衰手段が簡単になって気液分離路６内の形状が簡単になるとともに、その減衰手段の形成作業が容易になり、副渦流による主渦流の減衰効果を高めることができる。   Therefore, in this embodiment, when the carrier liquid flows backward from the supply chamber 18 in the suction passage 15, the carrier liquid in the suction chamber 16 and the blade chamber 2 mainly flows backward from the suction port 17, and is separated from the suction chamber 16 by the partition wall 19. The transport liquid in the partitioned liquid storage chamber 20 is less likely to flow back, and the transport liquid tends to remain in the liquid storage chamber 20, and the liquid remaining in the liquid storage chamber 20 passes through the suction chamber 16 from the first communication port 21. Thus, it becomes easy to return to the blade chamber 2, and it becomes easy to secure priming water in the suction chamber 16 and the blade chamber 2. Further, in the present embodiment, the attenuation means for attenuating the main vortex flow by the auxiliary vortex flow from the auxiliary hole 12 is simplified, the shape in the gas-liquid separation path 6 is simplified, and the operation of forming the attenuation means is facilitated. Thus, the attenuation effect of the main vortex due to the auxiliary vortex can be enhanced.

前記実施形態では、貯液室２０の第一の連通口２１が吸込室１６に連通するとともに貯液室２０の第二の連通口２２が供給室１８に連通しているが、貯液室２０の第一の連通口２１を翼室２に連通させたり、貯液室２０の第二の連通口２２を吸込室１６に連通させたりしてもよい。   In the embodiment, the first communication port 21 of the liquid storage chamber 20 communicates with the suction chamber 16 and the second communication port 22 of the liquid storage chamber 20 communicates with the supply chamber 18. The first communication port 21 may communicate with the blade chamber 2, or the second communication port 22 of the liquid storage chamber 20 may communicate with the suction chamber 16.

本実施形態にかかる非容積形ポンプを正面側から見た部分断面図である。It is the fragmentary sectional view which looked at the non-displacement type pump concerning this embodiment from the front side. （ａ）は図１のＡ−Ａ線部分断面図であり、（ｂ）は図１のＢ−Ｂ線部分断面図である。(A) is the AA partial fragmentary sectional view of FIG. 1, (b) is the BB partial sectional view of FIG. 本実施形態にかかる非容積形ポンプを側面側から見た部分断面図である。It is the fragmentary sectional view which looked at the non-displacement type pump concerning this embodiment from the side. （ａ）は図３のＣ−Ｃ線部分断面図であり、（ｂ）は図３のＤ−Ｄ線部分断面図である。(A) is the CC sectional view taken on the line of FIG. 3, (b) is the DD sectional view taken on the line of FIG.

符号の説明Explanation of symbols

２…翼室、３…羽根車、７…吐出路、１５…吸込路、１６…吸込室、１７…吸込口、１８…供給室、１９…隔壁、２０…貯液室、２１…第一の連通口、２２…第二の連通口。   2 ... vane chamber, 3 ... impeller, 7 ... discharge passage, 15 ... suction passage, 16 ... suction chamber, 17 ... suction port, 18 ... supply chamber, 19 ... partition wall, 20 ... liquid storage chamber, 21 ... first Communication port, 22 ... Second communication port.

Claims (6)

翼室内の羽根車により吸込路から翼室へ吸入された搬送液を翼室から吐出路へ吐出する揚液作動のほかに、呼び水作用を行うことができる非容積形ポンプにおいて、前記吸込路には、翼室に搬送液を吸入する供給経路のほかに、この供給経路に対し隔壁により区画されて翼室に貯液を呼び水として供給する貯液室を備えたことを特徴とする非容積形ポンプ。 In a non-displacement pump capable of performing a priming action in addition to a pumping operation in which the carrier liquid sucked into the blade chamber from the suction passage by the impeller in the blade chamber is discharged from the blade chamber to the discharge passage, In addition to the supply path for sucking the carrier liquid into the wing chamber, the non-volumetric type is provided with a liquid storage chamber that is partitioned by a partition wall with respect to the supply path and supplies the stored liquid as priming water to the wing chamber pump. 翼室内の羽根車により吸込路から翼室へ吸入された搬送液を翼室から吐出路へ吐出する揚液作動のほかに、呼び水作用を行うことができる非容積形ポンプにおいて、前記吸込路は、翼室に面する吸込室と、この吸込室に対し隔壁により区画されて第一の連通口を介して連通する貯液室と、この吸込室に対し吸込口を介して連通するとともにこの貯液室に対し第二の連通口を介して連通する供給室とを備えていることを特徴とする非容積形ポンプ。 In a non-displacement pump capable of performing a priming action in addition to a pumping operation in which the carrier liquid sucked into the blade chamber from the suction passage by the impeller in the blade chamber is discharged from the blade chamber to the discharge passage, the suction passage is A suction chamber that faces the blade chamber, a liquid storage chamber that is partitioned by a partition wall and communicates with the suction chamber via the first communication port, and communicates with the suction chamber via the suction port and stores the storage chamber. A non-displacement pump comprising a supply chamber communicating with the liquid chamber via a second communication port. 前記第二の連通口における開口面積は前記吸込口における開口面積よりも小さく設定されていることを特徴とする請求項２に記載の非容積形ポンプ。 The non-displacement pump according to claim 2, wherein an opening area of the second communication port is set smaller than an opening area of the suction port. 前記第一の連通口における開口面積は前記第二の連通口における開口面積よりも大きく設定されていることを特徴とする請求項２または請求項３に記載の非容積形ポンプ。 The non-displacement pump according to claim 2 or 3, wherein an opening area of the first communication port is set larger than an opening area of the second communication port. 前記吸込路において、搬送液が供給室から逆流した状態で、第二の連通口から貯液室に流入した空気の圧力により、呼び水として貯液室に残った貯液が第一の連通口から吸込室を通って翼室に戻ることを特徴とする請求項２または請求項３または請求項４に記載の非容積形ポンプ。 In the suction passage, the liquid remaining in the storage chamber as priming water is discharged from the first communication port by the pressure of the air flowing into the storage chamber from the second communication port in a state where the carrier liquid flows backward from the supply chamber. The non-displacement pump according to claim 2, 3 or 4, wherein the pump returns to the blade chamber through the suction chamber. 羽根車により翼室内の自吸液を循環させながら気液分離する自吸作動を行うことを特徴とする請求項１から請求項５のうちいずれかの請求項に記載の非容積形ポンプ。 The non-displacement pump according to any one of claims 1 to 5, wherein a self-priming operation is performed for gas-liquid separation while circulating the self-priming liquid in the blade chamber by an impeller.
JP2006234315A 2006-08-30 2006-08-30 Non-displacement pump Expired - Fee Related JP4819621B2 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2098373A1 (en) 2008-03-07 2009-09-09 Seiko Epson Corporation Head substrate and thermal head substrate
CN103994078A (en) * 2014-05-28 2014-08-20 姜堰市德华船用泵业制造有限公司 Volute changeable type marine self-priming centrifugal pump

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4415168Y1 (en) * 1965-10-16 1969-06-30
JPS5578192A (en) * 1978-12-07 1980-06-12 Daiki Gomme Kogyo Kk Self-priming centrifugal pump
JP2000179487A (en) * 1998-12-15 2000-06-27 Nishigaki Pump Seizo Kk Check valve for self-priming pump
JP2000269360A (en) * 1999-03-18 2000-09-29 Sony Corp Semiconductor memory cell
JP2002021761A (en) * 2000-07-06 2002-01-23 Honda Kiko Co Ltd Self-priming pump

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4415168Y1 (en) * 1965-10-16 1969-06-30
JPS5578192A (en) * 1978-12-07 1980-06-12 Daiki Gomme Kogyo Kk Self-priming centrifugal pump
JP2000179487A (en) * 1998-12-15 2000-06-27 Nishigaki Pump Seizo Kk Check valve for self-priming pump
JP2000269360A (en) * 1999-03-18 2000-09-29 Sony Corp Semiconductor memory cell
JP2002021761A (en) * 2000-07-06 2002-01-23 Honda Kiko Co Ltd Self-priming pump

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2098373A1 (en) 2008-03-07 2009-09-09 Seiko Epson Corporation Head substrate and thermal head substrate
CN103994078A (en) * 2014-05-28 2014-08-20 姜堰市德华船用泵业制造有限公司 Volute changeable type marine self-priming centrifugal pump

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