WO2020145195A1 - Dispositif et procédé d'aspiration de fluide - Google Patents

Dispositif et procédé d'aspiration de fluide Download PDF

Info

Publication number
WO2020145195A1
WO2020145195A1 PCT/JP2019/051413 JP2019051413W WO2020145195A1 WO 2020145195 A1 WO2020145195 A1 WO 2020145195A1 JP 2019051413 W JP2019051413 W JP 2019051413W WO 2020145195 A1 WO2020145195 A1 WO 2020145195A1
Authority
WO
WIPO (PCT)
Prior art keywords
container
liquid
gas
fluid
pump
Prior art date
Application number
PCT/JP2019/051413
Other languages
English (en)
Japanese (ja)
Inventor
前田和幸
Original Assignee
前田和幸
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 前田和幸 filed Critical 前田和幸
Publication of WO2020145195A1 publication Critical patent/WO2020145195A1/fr

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B23/00—Pumping installations or systems
    • F04B23/02—Pumping installations or systems having reservoirs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
    • F04F3/00—Pumps using negative pressure acting directly on the liquid to be pumped

Definitions

  • the present invention relates to a device for sucking a fluid such as gas, liquid or gas-liquid mixture by negative pressure.
  • the basic principle is that a pipe connected to the upper part of a container that does not deform even in a vacuum state containing liquid is connected.
  • a fluid such as gas, liquid or gas-liquid mixture
  • the liquid including the gas-liquid mixture
  • the pump has the features of simple structure, easy maintenance and management, and long life.
  • the present invention relates to the provision of a device having a characteristic that the degree of vacuum in the connected container can be increased by connecting the device to a sealed container and operating the device.
  • turbo type pumps When suctioning a fluid, a method of generating a negative pressure in the device and suctioning by a pressure difference is often used, and this is usually called a pump.
  • Pumps are roughly classified into turbo type pumps and positive displacement pumps according to their principle and structure.
  • the turbo type pump rotates an impeller inside a casing, and includes a centrifugal pump, a mixed flow pump, an axial flow pump, and the like.
  • Positive displacement pumps include reciprocating pumps such as piston pumps and plunger pumps, gear pumps, vane pumps and screw pumps.
  • a pump called a vacuum pump can create a vacuum state (a state in which the atmospheric pressure in a certain space is lower than atmospheric pressure), so it sucks fluids such as liquids, gases, and gas-liquid mixtures. It becomes possible to do.
  • Vacuum pumps include oil rotary vacuum pumps, roots-type and screw-type dry vacuum pumps, and the like.
  • Patent Documents 1 and 2 there is a method of sucking a fluid such as a liquid, a gas, an attempted mixture using a vacuum generator such as an oil rotary vacuum pump. Since the suctioned fluid is retained in a liquid storage tank and processed, a vacuum state is created again and the fluid is suctioned, repeated suction cannot be performed. Further, in Document 1, the only fluid that is sucked into the vacuum generator is air that has passed through the strainer.
  • an oil rotary vacuum pump which is a typical vacuum generating device, has a complicated handling of hydraulic oil, and thus requires careful management thereof.
  • a turbo-type pump can continuously suck liquid and transfer it to a target location, but has a relatively low suction force and its flow rate changes depending on the load.
  • positive displacement pumps attention must be paid to the deterioration of the sliding surface between the casing and pistons, plungers, gears, vanes, and screws over time (such as increased clearance due to wear).
  • the pump usually requires a liquid having a sealing action called "priming water” at the time of first operation, and has a characteristic that its ability is significantly reduced when gas is mixed in the liquid to be sucked.
  • a vacuum pump can easily create a vacuum state, but its structure is complicated and requires special technology for maintenance and management.
  • the state of the fluid to be sucked can be various states such as temperature, viscosity, form (gas, liquid, gas-liquid mixture, etc.), the presence or absence of a mixture. It is difficult for the technology shown in the prior art document to deal with all of these.
  • the present invention is based on the basic principle of a pump that "suctions a fluid by generating a pressure lower than atmospheric pressure (creating a vacuum state)" of a pipe connected to an upper part of a container containing a liquid. Connect (insert) the tip to a fluid such as gas, liquid, gas-liquid mixture to be sucked, connect the pipe connected to the bottom of the container containing the liquid to the suction side of the pump, and operate the pump. It was put into practical use with a device that has a structure and function that the fluid is sucked into the container by the negative pressure generated by lowering the liquid level of the container that contains the liquid.
  • the invention according to claim 1 is a device for sucking fluid such as gas, liquid, gas-liquid mixture by negative pressure, and a device for sucking fluid such as gas, liquid, gas-liquid mixture by negative pressure.
  • the invention according to claim 2 is a method of sucking a fluid such as gas, liquid, gas-liquid mixture by negative pressure, and is connected to the upper portion of a container with a level sensor that does not deform even in a vacuum state containing liquid. Connect (insert) the pipe to the fluid (including gas-liquid mixture) to be sucked, connect the pipe connected to the bottom of this container to the suction side of the pump, and the liquid level in the container is at the level sensor position. The liquid is sucked into the container due to the negative pressure generated by lowering the liquid level of the liquid in the container by operating the pump until the temperature reaches.
  • a fluid such as gas, liquid, gas-liquid mixture by negative pressure
  • the invention according to claim 3 is a device for sucking fluid such as gas, liquid, gas-liquid mixture by negative pressure, and is connected to the upper portion of a container with a level sensor that does not deform even in a vacuum state containing liquid. Connect (insert) the pipe to the fluid to be aspirated (including gas-liquid mixture), connect the pipe connected to the bottom of this container to the suction side of the pump, and the liquid level in the container reaches the level sensor position.
  • the present invention is characterized by having a plurality of containers with a level sensor, a switching valve, a check valve, a pump and pipes connecting these, and a control device for switching the flow path of the switching valve in response to a signal from the level sensor.
  • the invention according to claim 4 is a method of sucking a fluid such as gas, liquid, gas-liquid mixture by negative pressure, and is connected to the upper portion of a level sensor-equipped container that does not deform even in a vacuum state containing liquid. Connect (insert) the pipe to the fluid to be aspirated (including gas-liquid mixture), connect the pipe connected to the bottom of this container to the suction side of the pump, and the liquid level in the container reaches the level sensor position.
  • a fluid such as gas, liquid, gas-liquid mixture by negative pressure
  • the present invention is characterized by having a plurality of containers with a level sensor, a switching valve, a check valve, a pump and pipes connecting these, and a control device for switching the flow path of the switching valve in response to a signal from the level sensor.
  • the invention according to claim 5 is an apparatus for sucking fluid such as gas, liquid, gas-liquid mixture by negative pressure, and is connected to the upper portion of a container with a level sensor that does not deform even in a vacuum state containing liquid. Connect (insert) the pipe to the fluid to be aspirated (including gas-liquid mixture), connect the pipe connected to the bottom of this container to the suction side of the pump, and the liquid level in the container reaches the level sensor position. By operating the pump up to, the liquid level of the container is lowered and the negative pressure generated causes the fluid (including the gas-liquid mixture) to be sucked into the container continuously, so that suction is performed.
  • fluid such as gas, liquid, gas-liquid mixture by negative pressure
  • Liquid flow switching valve with backflow prevention function installed in the middle of the pipe connecting the upper part of each level sensor container containing liquid (including gas-liquid mixture) and liquid, the pipe connecting this switching valve and each container
  • a fluid including a gas-liquid mixture
  • a container CTN-A
  • a level sensor that does not deform even in a vacuum state
  • a pump PUMP
  • Pipe (SL) from the suction port connected (inserted) (including the gas-liquid mixture) to the switching valve (SWV-1) and pipe (LA) from the switching valve (SWV-1) to the container (CTN-A)
  • a switching valve SWV-3) installed in the middle of the pipe (LA-3) from the pump (PUMP) to the container (CTN-B
  • (1) is provided with a check valve (NRV-2) installed in the middle of the pipe (LB-1).
  • NAV-2 check valve
  • the fluid (gas-liquid mixture) Pipe (SL) from the intake port connected (inserted) to the switching valve (SWV-1) and the pipe (LB-1) from the switching valve (SWV-1) to the container (CTN-B).
  • Check valve (NRV-2) installed in the middle, switching valve (SWV-2) installed in the middle of the pipe (LB-2) from the container (CTN-B) to the pump (PUMP), and the pump Switching valve (SWV-3) installed in the middle of the pipe (LB-3) from (PUMP) to the container (CTN-A), and pipe from the container (CTN-A) to the switching valve (SWV-1)
  • a check valve (NRV-1) is provided in the middle of (LA-1). Furthermore, in order to discharge the sucked fluid (including the gas-liquid mixture) from the inside of the device to the outside, the pipe (LB-4) and the check valve (NRV-1) installed on the outflow side of the check valve (NRV-1).
  • the pipe (LA-4) installed on the outflow side and the pipe (DL) that joins these two pipes (LB-4 and LA-4) and leads to the outside of the device are provided. It is characterized by comprising a control device having a function of switching the flow path of the switching valve in response to the signal.
  • the invention according to claim 6 is a method of sucking a fluid such as gas, liquid or gas-liquid mixture by negative pressure, and is connected to the upper portion of a container with a level sensor that does not deform even in a vacuum state containing liquid. Connect (insert) the pipe to the fluid to be aspirated (including gas-liquid mixture), connect the pipe connected to the bottom of this container to the suction side of the pump, and the liquid level in the container reaches the level sensor position.
  • a fluid such as gas, liquid or gas-liquid mixture by negative pressure
  • Switching valve with backflow prevention function installed in the middle of the pipe that connects the upper part of each level sensor container that contains liquid and liquid, and a check valve with pressure adjustment function that branches from the pipe that connects this switching valve and each container Equipped with a backflow prevention switching valve installed in the middle of the pipe that connects the bottom of each container and the pump, and is emitted when the liquid level of each container descends to the set position of the level sensor installed in each container. It is characterized by being equipped with a control device for switching the flow path of each switching valve in response to a signal.
  • a fluid including a gas-liquid mixture
  • a container CTN-A
  • a level sensor that does not deform even in a vacuum state
  • a pump PUMP
  • Pipe (SL) from the suction port connected (inserted) (including the gas-liquid mixture) to the switching valve (SWV-1) and pipe (LA) from the switching valve (SWV-1) to the container (CTN-A)
  • a switching valve SWV-3) installed in the middle of the pipe (LA-3) from the pump (PUMP) to the container (CTN-B
  • (1) is provided with a check valve (NRV-2) installed in the middle of the pipe (LB-1).
  • NAV-2 check valve
  • the fluid (gas-liquid mixture) Pipe (SL) from the intake port connected (inserted) to the switching valve (SWV-1) and the pipe (LB-1) from the switching valve (SWV-1) to the container (CTN-B).
  • a check valve (NRV-1) installed in the middle of (LA-1) is provided. Further, in order to discharge the sucked fluid (including the gas-liquid mixture) from the inside of the device to the outside, the pipe (LB-4) and the check valve (NRV-1) installed on the outflow side of the check valve (NRV-1).
  • the pipe (LA-4) installed on the outflow side and the pipe (DL) that joins these two pipes (LB-4 and LA-4) and leads to the outside of the device are provided. Is provided with a control device having a function of switching the flow path of the switching valve in response to the signal.
  • the invention according to claim 7 is an apparatus for sucking fluid such as gas, liquid, gas-liquid mixture by negative pressure, and is connected to the upper portion of a container with a level sensor that does not deform even in a vacuum state containing liquid. Connect (insert) the pipe to the fluid to be aspirated (including gas-liquid mixture), connect the pipe connected to the bottom of this container to the suction side of the pump, and the liquid level in the container reaches the level sensor position.
  • the device which has the function of sucking the fluid (including gas-liquid mixture) into the container by the negative pressure generated by lowering the liquid level of this container is connected to the sealed container. It is characterized in that the degree of vacuum in the connected container can be increased by operating in this manner.
  • the invention according to claim 8 is a method of sucking a fluid such as gas, liquid, gas-liquid mixture by negative pressure, and is connected to the upper portion of a container with a level sensor that does not deform even in a vacuum state containing liquid.
  • Connect (insert) the pipe to the fluid to be aspirated (including gas-liquid mixture) connect the pipe connected to the bottom of this container to the suction side of the pump, and the liquid level in the container reaches the level sensor position.
  • the device which has the function of sucking the fluid (including gas-liquid mixture) into the container by the negative pressure generated by lowering the liquid level of this container is connected to the sealed container. It is characterized in that the degree of vacuum in the connected container can be increased by operating in this manner.
  • the invention according to claim 9 is an apparatus for sucking fluid such as gas, liquid, gas-liquid mixture by negative pressure, and is connected to the upper portion of a container with a level sensor that does not deform even in a vacuum state containing liquid. Connect (insert) the pipe to the fluid to be aspirated (including gas-liquid mixture), connect the pipe connected to the bottom of this container to the suction side of the pump, and the liquid level in the container reaches the level sensor position.
  • fluid to be aspirated including gas-liquid mixture
  • a device that has the effect of sucking fluid (including gas-liquid mixture) into the container by the negative pressure generated by operating the pump up to For use it is characterized in that the apparatus can have two roles of a vacuum pump and a condenser by putting the liquid distilled under reduced pressure into a plurality of vessels and operating the vessels while cooling the vessels.
  • the invention according to claim 10 is a method of sucking a fluid such as gas, liquid, gas-liquid mixture by negative pressure, and is connected to an upper portion of a container with a level sensor that does not deform even in a vacuum state containing liquid. Connect (insert) the pipe to the fluid to be aspirated (including gas-liquid mixture), connect the pipe connected to the bottom of this container to the suction side of the pump, and the liquid level in the container reaches the level sensor position.
  • a fluid such as gas, liquid, gas-liquid mixture by negative pressure
  • a device that has the effect of sucking fluid (including gas-liquid mixture) into the container by the negative pressure generated by operating the pump up to For use it is characterized in that the apparatus can have two roles of a vacuum pump and a condenser by putting the liquid distilled under reduced pressure into a plurality of vessels and operating the vessels while cooling the vessels.
  • the present invention is a device for sucking fluid such as gas, liquid, gas-liquid mixture by negative pressure
  • the basic principle is to connect (insert) the tip of a pipe connected to the upper part of a container containing liquid to the fluid. If the pipe connected to the bottom of the container containing the liquid is connected to the suction side of the pump and the pump is operated, the liquid level in the container containing the liquid will drop and the inside of the container will have a negative pressure.
  • This is a practical application of the principle of a suction pump in which a fluid is sucked into a container.
  • the structure In order to continuously perform the suction action by this negative pressure, the structure is simple and maintenance is achieved by using only a plurality of containers containing liquid, a pump, a switching valve and a check valve, and piping connecting them. It has the feature of easy maintenance. Moreover, since there is no sliding part other than the pump, the structure is simple, maintenance and inspection are easy, and the service life is long. Further, it is possible to provide a device having a characteristic that the degree of vacuum in the connected container can be increased by connecting the device to a closed container and operating the device.
  • FIG. 3 is a block diagram showing an example of an apparatus for continuously sucking a fluid (including a gas-liquid mixture) according to an embodiment of the present invention.
  • FIG. 1 is a conceptual diagram showing the basic principle according to the embodiment of the present invention. Connects (inserts) the pipe connected to the top of the container with a level sensor that does not deform even in a vacuum containing liquid to the fluid to be aspirated (including the gas-liquid mixture), and pumps the pipe connected to the bottom of this container By connecting to the suction side of the and operating the pump until the liquid level in the container reaches the position of the level sensor, the liquid level in this container drops and the negative pressure generated causes the fluid (including the gas-liquid mixture) Is sucked into the container.
  • FIG. 2 is a flow chart showing an example of steps of an apparatus for continuously sucking a fluid (including a gas-liquid mixture) according to the embodiment of the present invention.
  • the pipe connected to the upper portion of the container A that does not deform even in a vacuum state containing the liquid is connected (inserted) to the fluid to be aspirated (including the gas-liquid mixture), and the pipe connected to the lower portion of the container is connected.
  • the pump By operating the pump by connecting it to the suction side of the pump, the liquid (including the gas-liquid mixture) is sucked into the container due to the negative pressure generated when the liquid surface of the container is lowered.
  • the fluid sucked into the container reaches the inlet of the suction pump through the pipe connected to the lower portion of the container, and is injected from the outlet of the pump into the container B which is not deformed even in a vacuum state through the pipe.
  • the fluid injected into the container B is discharged to the outside of the container B via the check valve installed in the upper part of the container.
  • the fluid sucked by the suction pump contains gas (it was a gas or a gas-liquid mixture)
  • the liquid level of the container A is lowered.
  • the level sensor installed in the lower part detects this, and the control device switches all the switching valves installed in the device in the reverse direction.
  • FIG. 3 is a block diagram showing an example of an apparatus for continuously sucking a fluid (including a gas-liquid mixture) according to an embodiment of the present invention.
  • the switching valve (SWV-1) is switched from the pipe (SL) to the pipe (LA-1).
  • the switching valve (SWV-2) is switched from the pipe (LA-2) to the pump (PUMP) direction.
  • the switching valve (SWV-3) is switched from the pump (PUMP) to the pipe (LA-3).
  • the fluid sucked from the suction port described above reaches the container A through the switching valve (SWV-1) and the pipe (LA-1).
  • the check valve (NRV-1) installed in the middle of the pipe (LA-1) is in a closed state because the pipe (LA-1) has a negative pressure and is sucked. All of the fluid flows into the container A.
  • the liquid contained in the container A and the liquid flowing into the container A are introduced into the pump (PUMP) through the pipe (LA-2) and the switching valve (SWV-2), and then the switching valve (SWV-3), It reaches the container B through the pipe (LA-3).
  • the switching valve (SWV-1) is switched from the pipe (SL) to the pipe (LB-1).
  • the switching valve (SWV-2) is switched from the pipe (LB-2) to the pump (PUMP) direction.
  • the switching valve (SWV-3) is switched from the pump (PUMP) to the pipe (LB-3).
  • the fluid sucked from the suction port) reaches the container B through the switching valve (SWV-1) and the pipe (LB-1).
  • the check valve (NRV-2) installed in the middle of the pipe (LB-1) is closed because the pipe (LB-1) has a negative pressure and is sucked. All the fluid flows into the container B.
  • the liquid contained in the container B and the liquid flowing into the container B flow into the pump (PUMP) through the pipe (LB-2) and the switching valve (SWV-2), and then the switching valve (SWV-3), It reaches the container A through the pipe (LB-3).
  • level sensors are installed below the containers A and B.
  • a fluid including a gas-liquid mixture
  • a container (A) with a level sensor and a pump (PUMP) that does not deform even in a vacuum containing liquid.
  • the fluid (including the gas-liquid mixture) sucked into the container A is a liquid
  • the liquid surface of the container A does not decrease, and thus the fluid can be continuously sucked.
  • the fluid (including the gas-liquid mixture) sucked into the container A contains a gas or the sucked fluid is a gas
  • the liquid level of the container A is lowered, and a gas component (PUMP) is generated when left standing. ) Is reached and its performance may be degraded.
  • the present invention is applicable to the case where a fluid such as a gas, a liquid or a gas-liquid mixture is sucked continuously and stably.
  • CTN-A Container A (with level sensor)
  • CTN-B Container B (with level sensor)
  • PUMP Pump CTR: Control device
  • SWV-1 Switching valve-1
  • SWV-2 Switching valve-2
  • SWV-3 Switching valve-3
  • NRV-1 Check valve-1
  • Check valve-2 Check valve-2
  • SL Suction piping DL: Discharge pipe
  • LA-1 Piping A-1
  • LA-2 Piping A-2
  • LA-3 Piping A-3
  • LA-4 Piping A-4
  • LB-1 Piping B-1
  • LB-2 Piping B-2 LB-3: Piping B-3
  • LB-4 Piping B-4

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Jet Pumps And Other Pumps (AREA)
  • Details Of Reciprocating Pumps (AREA)

Abstract

Le problème décrit par la présente invention est de pourvoir à un dispositif d'aspiration de fluide permettant d'aspirer efficacement un gaz, un liquide ou un mélange gaz-liquide, le dispositif d'aspiration de fluide étant caractérisé en ce que sa structure est simple et facile à entretenir et à gérer. La solution selon l'invention concerne un dispositif d'aspiration de fluide caractérisé en ce qu'il comprend une pluralité de récipients, une pompe, une soupape de commutation, une soupape anti-retour, des tuyaux les reliant, et un dispositif de commande. Afin de provoquer la manifestation en continu d'un phénomène, ledit phénomène comprenant l'aspiration d'un fluide (y compris un mélange gaz-liquide) dans un récipient au moyen d'une pression négative produite lorsque le niveau d'un liquide dans le récipient diminue, un tuyau relié à une partie supérieure d'un récipient comportant un capteur de niveau, ledit récipient contenant un liquide et ne se déformant pas même sous vide, est relié à (introduit dans) le fluide (y compris un mélange gaz-liquide) à aspirer, un tuyau relié à une partie inférieure du récipient est relié à un côté aspiration de la pompe, et la pompe est entraînée.
PCT/JP2019/051413 2019-01-07 2019-12-27 Dispositif et procédé d'aspiration de fluide WO2020145195A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2019-000753 2019-01-07
JP2019000753A JP6644364B1 (ja) 2019-01-07 2019-01-07 流体吸引装置及び流体吸引方法

Publications (1)

Publication Number Publication Date
WO2020145195A1 true WO2020145195A1 (fr) 2020-07-16

Family

ID=69412139

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2019/051413 WO2020145195A1 (fr) 2019-01-07 2019-12-27 Dispositif et procédé d'aspiration de fluide

Country Status (2)

Country Link
JP (1) JP6644364B1 (fr)
WO (1) WO2020145195A1 (fr)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1698127A (en) * 1926-08-05 1929-01-08 Salvage Process Corp Air lift
JPS55104782U (fr) * 1979-01-16 1980-07-22
JPH0374595A (ja) * 1989-08-17 1991-03-29 Ebara Corp 真空式汚水収集装置用真空ポンプの封水冷却装置
JP2568861Y2 (ja) * 1992-09-07 1998-04-15 積水化学工業株式会社 真空式下水道システムにおける真空ポンプの排気構造
JPH10131881A (ja) * 1996-10-29 1998-05-19 Miura Co Ltd 真空脱気装置
JP2002122099A (ja) * 2000-10-13 2002-04-26 Tlv Co Ltd エゼクタ真空ポンプ
JP2005344698A (ja) * 2004-06-03 2005-12-15 Takao Yamamoto 水の落差を利用した吸引装置
JP2012184719A (ja) * 2011-03-07 2012-09-27 Nippon Kensetsu Kikai Shoji Kk ポンプ装置
JP2013253504A (ja) * 2012-06-05 2013-12-19 Kobelco Eco-Solutions Co Ltd 減圧装置及び減圧方法

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1698127A (en) * 1926-08-05 1929-01-08 Salvage Process Corp Air lift
JPS55104782U (fr) * 1979-01-16 1980-07-22
JPH0374595A (ja) * 1989-08-17 1991-03-29 Ebara Corp 真空式汚水収集装置用真空ポンプの封水冷却装置
JP2568861Y2 (ja) * 1992-09-07 1998-04-15 積水化学工業株式会社 真空式下水道システムにおける真空ポンプの排気構造
JPH10131881A (ja) * 1996-10-29 1998-05-19 Miura Co Ltd 真空脱気装置
JP2002122099A (ja) * 2000-10-13 2002-04-26 Tlv Co Ltd エゼクタ真空ポンプ
JP2005344698A (ja) * 2004-06-03 2005-12-15 Takao Yamamoto 水の落差を利用した吸引装置
JP2012184719A (ja) * 2011-03-07 2012-09-27 Nippon Kensetsu Kikai Shoji Kk ポンプ装置
JP2013253504A (ja) * 2012-06-05 2013-12-19 Kobelco Eco-Solutions Co Ltd 減圧装置及び減圧方法

Also Published As

Publication number Publication date
JP2020109285A (ja) 2020-07-16
JP6644364B1 (ja) 2020-02-12

Similar Documents

Publication Publication Date Title
US6152689A (en) Self-priming type cetrifugal pump
CN102762867B (zh) 具有吹扫气体系统的干式真空泵和吹扫方法
CN101037992A (zh) 高真空隔膜泵
EP1624190B1 (fr) Système de pompage
WO2020145195A1 (fr) Dispositif et procédé d'aspiration de fluide
AU2014406724B2 (en) Vacuum-generating pumping system and pumping method using this pumping system
CN109653801B (zh) 用于往复式机器的活塞杆密封系统和密封活塞杆的方法
EP1840376A3 (fr) Pompe à huile
US11143172B2 (en) Piston/liner configuration coordination in a piston pump
JP2021161887A (ja) 気体の吸引・圧送装置及び気体の吸引・圧送方法
RU2514453C1 (ru) Поршневой насос с газосепаратором
CN201714681U (zh) 组合式自吸泵
CN110685923A (zh) 复合式强自吸离心泵组
KR200439895Y1 (ko) 선박용 카고 펌프의 액상화물 잔류량 흡입을 통한 액상화물 잔류량 처리 구조
JP2021116763A (ja) 大気圧下の常温において液体である物質が気化した流体を吸引して凝縮させる装置と方法
DK201901400A1 (en) Double pump
WO2003083310A1 (fr) Dispositif pompe de chargement
GB2299832A (en) Screw pump
CN219344896U (zh) 活塞泵组件
CN105134564A (zh) 包括专用除气路径的液压控制隔膜泵
KR20030047711A (ko) 원추형 임펠러를 구비한 액체 공급 펌프
JP2728467B2 (ja) 吸込側自吸室形の立軸ポンプ
RU2178832C1 (ru) Устройство для перекачки многофазных жидкостей
BRODGESELL et al. 7.4 Pumps as Control Elements
CN106286479B (zh) 一种顶置泵防吸空方法及装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 19909053

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 19909053

Country of ref document: EP

Kind code of ref document: A1