WO2014010253A1 - Pompe à main du type tandem - Google Patents

Pompe à main du type tandem Download PDF

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Publication number
WO2014010253A1
WO2014010253A1 PCT/JP2013/004314 JP2013004314W WO2014010253A1 WO 2014010253 A1 WO2014010253 A1 WO 2014010253A1 JP 2013004314 W JP2013004314 W JP 2013004314W WO 2014010253 A1 WO2014010253 A1 WO 2014010253A1
Authority
WO
WIPO (PCT)
Prior art keywords
cylinder
pump
pumping
valve
valve body
Prior art date
Application number
PCT/JP2013/004314
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English (en)
Japanese (ja)
Inventor
直司 岡本
神山　健一
Original Assignee
おかもとポンプ株式会社
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 おかもとポンプ株式会社 filed Critical おかもとポンプ株式会社
Publication of WO2014010253A1 publication Critical patent/WO2014010253A1/fr

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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
    • F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
    • F04B9/14—Pumps characterised by muscle-power operation
    • 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
    • F04B23/04—Combinations of two or more pumps
    • F04B23/08—Combinations of two or more pumps the pumps being of different types
    • F04B23/10—Combinations of two or more pumps the pumps being of different types at least one pump being of the reciprocating positive-displacement type
    • 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
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/10—Valves; Arrangement of valves

Definitions

  • the present invention relates to an improvement of a shared type pump device equipped with a submersible pump for deep wells and a hand pump for deep wells.
  • hand pumps for pumping up groundwater, one for shallow wells where the water level of the well is less than 8 meters, and one for deep wells used for wells deeper than 8 meters.
  • hand pumps used for deep wells are difficult to pump as easily as shallow well hand pumps, because force is required for pump operation. Therefore, motor pumps (hereinafter referred to as submersible pumps) that pump water electrically are used in many deep wells.
  • casing wells and screen pipes are used for wells excavated for deep wells in order to prevent wall surface collapse and protect them.
  • the inner diameter of the casing pipe is a submerged pump that is submerged in a water vein for pumping up ground water, or a casing pipe having a diameter into which a pump device of a hand pump can be inserted, for example, a diameter of 4 to 6 inches (about 10 to 15 cm). Many things are used.
  • the combined type deep well pump 64 includes a pumping pipe 67 in which a submersible pump 66 for a motor pump 65 is mounted in a casing pipe 75 and a pumping pipe 72 in which a pump device 71 for a hand pump 70 is mounted. And are inserted through each of them. For this reason, the combined type deep well pump 64 can be attached only to a deep well using a casing pipe 75 having a large diameter, for example, 6 inches (about 15 cm) or more.
  • the present invention forms a pump device 71 for a hand pump and a pumping device for the hand pump by collectively forming a pumping channel for the submersible pump for the deep well.
  • the pump 66 By mounting the pump 66 in the vertical direction, it can be mounted in a narrow 4-inch diameter deep well casing pipe, so that it can be mounted on many existing deep wells.
  • conventional deep well submersible pumps use submersible pumps that use ordinary household power to pump water, so they cannot be used if a power failure occurs during a disaster such as an earthquake.
  • the deep well submersible pump can be used by power from a solar panel using a power source.
  • a solar power source it cannot be used efficiently if the weather is bad, but the present invention provides a pump that is resistant to disasters even in such a case, since a hand pump for deep wells can be used manually. Is.
  • the present invention provides a pumping pipe 8 connected in the vertical direction of a branch pipe 6 having a switching valve 7 for switching the flow path of the hand pump 4 or the submersible pump 12, and a cylinder cylinder incorporating a pump mechanism 30. 28, an outer cylinder 16 arranged concentrically on the outside, and a combined pumping unit 15 provided with a submersible pump pumping path X and a hand pump pumping pump Y between the outer cylinder and the cylinder cylinder,
  • the pumping pipe 8 is attached to the lower part of the combined pumping unit 15 and pumps up the water.
  • the pumping pipe 8 connects the combined pumping unit 15 and the submersible pump 12 to the lower part in the vertical direction, and the branch pipe 6 connected to the upper part thereof. It is characterized in that either the hand pump 4 or the submersible pump 12 is operated by the switching operation of the switching valve 7 provided in the ground so that the groundwater can be pumped.
  • the hand pump 4 is connected to a pump shaft 5a pivotally supported on one end of an operating handle 5 by a valve body 10 for opening and closing a pump valve seat 8a, and a piston inserted into the pumping pipe 8 at the lower end of the pump shaft 5a.
  • the upper end of the shaft 9 is connected, and the lower end of the piston shaft is connected to the sliding cylinder portion 53 of the pump mechanism 30 built in the cylinder cylinder 28 constituting the composite pumping unit 15, and the operating handle 5 is moved up and down. By doing so, the pump mechanism is actuated so that groundwater can be pumped.
  • the combined pumping unit 15 has a lower support cylinder 17 having a pumping path 18 and a suction port 19 attached to the lower end of the outer cylinder 16, and an upper support cylinder 24 having a cylinder hole 25 attached to the upper end.
  • a lower connecting cylinder 31 having a suction hole 32 and a fixed valve seat 33 is attached to the lower end of the cylinder cylinder 28 incorporating the mechanism 30, and an upper connecting cylinder 41 having a flow hole 42 is attached to the upper end of the cylinder cylinder 28.
  • the upper end of the suction pipe 38 having one end connected to the suction port 19 of the lower support cylinder 17 is attached to the lower connection cylinder 31 between the lower support cylinder 17 and the lower connection cylinder 31 of the cylinder cylinder 28.
  • a connecting cylinder 44 having a communication port 45 is connected between the support cylinder 24 and the upper connecting cylinder 41 of the cylinder cylinder 28 to support the cylinder cylinder 28.
  • the pump mechanism 30 includes a lower connecting cylinder 31 having a suction hole 32 and a fixed valve seat 33 attached to the lower end of the cylinder cylinder 28, and a piston shaft 9 connected to the operating handle 5 of the hand pump 4.
  • the lower connecting cylinder 31 includes a valve holding portion 35 that holds a lower valve body 34 that opens and closes a fixed valve seat 33 provided at the upper end of the inner edge of the suction hole 32 so as to be movable up and down.
  • an inflow hole 36 for sending the groundwater sucked from the suction pipe 38 into the cylinder tube 28 is provided on the peripheral surface of the valve holding portion, and the operating valve body 51 has a sliding tube portion 53 having an open bottom surface.
  • a valve housing chamber 54 is formed above the upper end of the operating valve body 51, the lower end of the piston shaft 9 is connected to the upper end of the operating valve body 51, and the upper valve body 58 located in the valve housing chamber 54 is sucked into the lower portion of the sliding cylinder portion.
  • Valve seat 6 provided at the upper end of the inner edge of the hole 60 And vertically movably housed in the valve seat tube 59 having a, characterized in that formed by openably formed a valve seat 61 in the upper valve member 58 by the vertical movement of the actuating valve body 51.
  • the submersible pumping channel X provided in the combined pumping unit 15 draws groundwater from the pumping port 13 of the submersible pump 12 and passes through the hole 22 of the support ring 21 from the pumping channel 18 of the lower support cylinder 17 to the outer cylinder. 16 is pumped into the pumping pipe 8 from the communication port 45 of the connecting cylinder 44 through the flow path 27 provided between the cylinder cylinder 28 and discharged from the discharge port M of the submersible pump 12 through the switching valve 7.
  • the pumping path Y for the hand pump is connected to the lower connecting cylinder.
  • the lower valve body 34 closing the fixed valve seat 33 of 31 is raised by negative pressure to open the fixed valve seat 33, and groundwater flows from the suction hole 32 through the fixed valve seat 33 to the inflow hole of the valve holding portion 35.
  • 36 to Siri A certain amount of groundwater is pumped into the cylinder 28, the negative pressure at which the operating valve body 51 descends, the lower valve body 34 descends to close the fixed valve seat 33, and at the same time, the pressure of groundwater in the cylinder cylinder 28
  • the upper valve body 58 of the operating valve body 51 rises to open the valve seat 61, and groundwater is pumped up from the valve housing chamber 54 through the water supply hole 57 to the upper side of the cylinder cylinder 28, and the operating valve body 51 moves in the piston motion.
  • groundwater is sequentially sent from the upper connecting cylinder 41 through the connecting cylinder 44 and the pumping pipe 8 to the hand pump 4 from the pump valve seat 8a and is discharged from the discharge port N.
  • the tandem hand pump of the present invention connects the submersible pump 12 for the deep well and the pump mechanism 30 of the hand pump 4 for the deep well in the vertical direction, and the submersible pump water passage X and the pump for the hand pump inside.
  • the tandem hand pump 1 of the present application can be easily attached to a conventional deep well casing pipe.
  • the pumping pipes 8 are connected on the same axis, so that the diameter is 4 inches (about 10 cm).
  • the casing pipe can be used as it is.
  • the casing pipe can be made into a thin casing pipe having a diameter of 4 inches, so that the excavation cost can be reduced and it is economical.
  • FIG. 1 is an overall view of a tandem hand pump according to the present invention. It is a principal part expanded sectional view of a composite pumping unit. It is the sectional view on the AA line of FIG.
  • FIG. 3 is a sectional view taken along line BB in FIG. 2.
  • FIG. 3 is a sectional view taken along the line CC in FIG. 2.
  • FIG. 1 is an overall view of a tandem hand pump according to the present invention
  • FIG. 2 is an enlarged cross-sectional view of a main part of a combined pumping unit
  • FIG. 4 is a sectional view taken along the line BB of FIG. 2
  • FIG. 5 is a sectional view taken along the line CC of FIG. 2
  • FIG. 6 is an enlarged sectional view of a main part of the pump mechanism provided in the cylinder cylinder.
  • the tandem hand pump 1 includes a hand pump 4 and a discharge port M of the submersible pump 12 on a base 3 provided on a ground portion of a casing pipe 2 for a deep well (preferably a pipe having a diameter of 4 inches (about 10 cm)).
  • the submersible pump 12 and the combined pumping unit 15 each having a submersible pump pumping path X (FIG. 8) and a hand pump pumping pump Y (FIG. 10) at the lower end are connected in the vertical direction.
  • a valve body 10 that opens and closes a pump valve seat 8a is connected to a pump shaft 5a that is pivotally supported at one end of an operating handle 5 of the hand pump 4.
  • the lower end of the pump shaft 5 a is connected to the upper end of the piston shaft 9 inserted through the pumping pipe 8, and the lower end of the piston shaft 9 is connected to the pump mechanism 30 built in the cylinder cylinder 28 constituting the composite pumping unit 15.
  • the combined pumping unit 15 including the pumping channel X for the submersible pump and the pumping channel Y for the hand pump and the submersible pump 12 are connected on the same axis in the vertical direction, so that the diameter of the combined pumping unit (about 9 cm) ) Can be formed thinly, and can be attached to a deep well using a casing pipe having a diameter of 4 inches (about 10 cm), which is widely used as a casing pipe for deep wells.
  • the composite pumping unit 15 includes a long outer cylinder 16 having a different diameter and a cylinder cylinder 28 incorporating a pump mechanism 30.
  • a lower support cylinder 17 having a pumping path 18 and one or a plurality of suction ports 19 is attached to the lower end of the outer cylinder 16, and an upper support cylinder 24 having a cylinder hole 25 at the center is attached to the upper end of the outer cylinder 16.
  • the cylinder cylinder 28 is provided with a lower connecting cylinder 31 having a suction hole 32 and a fixed valve seat 33 at the lower end and an upper connecting cylinder 41 having a flow hole 42 at the upper end.
  • a connecting cylinder 44 having a communication port 45 is connected between the upper connecting cylinder 41 and the upper support cylinder 24 of the outer cylinder 16.
  • a suction pipe 38 having a plurality of suction ports 19 at the tip is attached between the lower connecting cylinder 31 of the cylinder cylinder 28 and the lower support cylinder 17 of the outer cylinder 16 so that the outer cylinder 16 and the cylinder cylinder 28 are connected.
  • a concentric support is provided, and a flow path 27 of the submersible pump pumping path X is provided between the outer cylinder 16 and the cylinder cylinder 28.
  • the suction pipe 38 is branched into a T-shape at the lower side, the lower end is connected to a plurality of suction ports 19 provided on the side surface of the lower support cylinder 17, and the upper end is connected to the suction hole of the lower connection cylinder 31 of the cylinder cylinder 28.
  • the outer periphery of the vertical portion of the suction pipe 38 is supported by a support ring 21 attached to the upper end of the lower support cylinder 17.
  • the support ring 21 is provided with a plurality of holes 22 in the direction perpendicular to the periphery of the support ring 21 to form the submersible pump pumping channel X.
  • the submersible pump pumping path X draws groundwater from the pumping port 13 by driving a motor attached to the submersible pump 12, and passes through a connecting cylinder portion 14 provided at the upper end of the submersible pump 12.
  • Water is fed to the pumping path 18 of the lower support cylinder 17 provided at the lower end of the composite pumping unit 15, passes through the hole 22 of the support ring 21 from the pumping path, and is a flow path 27 provided between the outer cylinder 16 and the cylinder cylinder 28.
  • the pump mechanism 30 includes a lower connecting cylinder 31 attached to the lower end of the cylinder cylinder 28 and an operating valve body attached to the lower end of the piston shaft 9 connected to the operating handle 5 of the hand pump 4. 51.
  • the lower connecting cylinder 31 is formed with a fixed valve seat 33 at the upper end of the inner edge of the suction hole 32 provided in the center, and a valve holding portion for holding the lower valve body 34 above the fixed valve seat 33 so as to be movable up and down. 35 is attached, and an inflow hole 36 for sending groundwater pumped from the suction pipe 38 into the cylinder tube 28 is provided on the peripheral surface of the valve holding portion 35.
  • the actuating valve body 51 includes a sliding cylinder 53 having a plurality of seal packings 56 on the outer peripheral surface with a lower surface opened, and a valve seat cylinder having a valve seat 61 on the inner edge upper end of a suction hole 60 provided in the center. 59 and an upper valve body 58 housed in a housing chamber provided between the valve seat tube 59 and the sliding tube portion 53.
  • the sliding cylinder 53 is formed with a valve accommodating chamber 54 that accommodates the upper valve body 58 at the upper portion, and a connecting convex portion 55 that connects the lower end of the piston shaft 9 at the center of the upper end of the valve accommodating chamber 54.
  • a water supply hole 57 through which ground water flows is provided at the periphery of the connecting convex portion 55.
  • the upper valve body 58 located in the valve accommodating chamber 54 of the sliding cylinder portion 53 is accommodated in the upper part of the valve seat cylinder 59 attached in the lower end opening of the sliding cylinder portion 53 so as to be movable up and down.
  • the upper valve body 58 moves up and down by the water pressure of the groundwater flowing through the inside and the piston movement of the operating valve body 51 to open and close the valve seat 61.
  • suction of groundwater by the hand pump 4 switches the switching valve 7 of the branch pipe 6 to close the submersible pump 12 side and opens the hand pump 4 side.
  • the operation handle 5 of the hand pump 4 is operated to pump water by the pump mechanism 30 built in the cylinder cylinder 28 in the composite pumping unit 15.
  • the valve body 10 is inserted into the vertical pipe portion 6a of the branch pipe 6 and the upper part of the piston shaft 9 inserted vertically in the pumping pipe 8, and the operation handle 5 is positioned upward as shown in FIG.
  • the pump valve seat 8a at the upper end of the vertical pipe portion 6a is mounted so as to be closed.
  • the discharge port M of the hand pump 4 and the submersible pump 12 is positioned at the upper end of the pump pipe 8 for pumping up ground water, and the pump pipe 8.
  • a composite pumping unit 15 and a submersible pump 12 are connected in the vertical direction to the lower end of each.
  • the valve body 10 closes the pump valve seat 8 a.
  • the switching valve 7 is switched to open the submersible pump 12 side, the hand pump 4 side becomes a closed circuit.
  • the submersible pump 12 is driven to pump the groundwater from the pumping port 13.
  • the groundwater pumped by the submersible pump 12 is pumped through the submersible pump pumping channel X of the combined pumping unit 15.
  • the pumping path X for the submersible pump is a pumping path of the lower support cylinder 17 provided at the lower end of the composite unit 15 through the connecting cylinder part 14 provided at the upper end of the submersible pump 12 from the pumping port 13.
  • the water is fed to 18, passes through a hole 22 of the support ring 21 from the pumping passage, passes through a flow path 27 provided between the outer cylinder 16 and the cylinder cylinder 28, and is pumped above the cylinder cylinder 28. It is sucked up through the pumping pipe 8 from the communication port 45 of the connecting tube 44 connecting the cylinder tube 28, and flows out from the discharge port M of the submersible pump 12 through the switching valve 7.
  • the switching valve 7 is switched to close the submersible pump 12 side, the hand pump 4 side is opened, and the operating handle 5 of the hand pump 4 is moved up and down.
  • the shaft 5a and the piston shaft 9 work together to move the piston of the pump mechanism 30 built in the cylinder cylinder 28 of the composite unit 15 to pump up the groundwater.
  • the pump mechanism 30 that operates by operating the operation handle 5 causes a negative pressure to be generated between the operation valve body 51 and the lower connecting cylinder 31 when the operation valve body 51 rises in the cylinder cylinder 28.
  • the upper valve body 58 of the operating valve body 51 closes the valve seat 61, and the lower valve body 34 of the lower connecting cylinder 31 rises due to negative pressure to open the fixed valve seat 33.
  • the fixed valve seat 33 is opened, a certain amount of groundwater passes through the suction hole 32 of the lower connecting cylinder 31 and the inflow hole 36 of the valve holding portion 35 into the cylinder cylinder 28 between the operating valve body 51 and the lower connecting cylinder 31. Flows in.
  • the hand pump pump pumping path Y is configured so that the groundwater flowing into the suction pipe 38 from the suction port 19 provided in the lower support cylinder 17 of the outer cylinder 16 by the action of the pump mechanism 30 flows into the lower connection cylinder.
  • the fixed valve seat 33 of 31 is opened and pumped into the cylinder cylinder 28 from the suction hole 32 through the inflow hole 36 of the valve holding portion 35 and the operating valve body 51 is lowered, the fixed valve seat 33 is lowered to the lower valve body 34.
  • the groundwater in the cylinder cylinder is closed from the valve seat 61 of the opened working valve body 51 through the storage chamber 54 through the water receiving hole 57 and above the cylinder cylinder 28, and further from the upper connection cylinder 41 to the connection cylinder 44. And discharged from the discharge port N of the hand pump 4 through the pumping pipe 8.
  • a submersible pump pumping channel X and a hand pump pumping channel Y are formed in a separate circuit in a compact manner in the combined pumping unit 15, and a submersible pump 12 is connected to the lower portion of the combined pumping unit, and
  • the pump pumping channel X and the hand pump pumping channel Y are connected to one pumping pipe 8 to enable pumping, so that it can be easily attached to the casing pipe as a deep well pump, so the construction period is short. Inexpensive and economical.
  • the power supply for driving the submersible pump is usually a general household power supply. However, in the event of a power outage, such as during a disaster, the submersible pump power supply can be used so that the power from the solar panel can be used.
  • a solar power supply connection portion is provided in the power supply portion of the submersible pump so that the submersible pump can be used by connecting directly to the power supply connection portion or via an appropriate connector (not shown) for solar power supply.
  • the weather is cloudy, it has an advantage that groundwater can be pumped by manually operating the hand pump 4.
  • Valve holding part 36 ... Inflow hole, 38 ... Suction pipe, 41 ... Upper connecting cylinder , 42 ... flow hole, 44 ... connecting cylinder, 45 ... communication port, 51 ... operating valve body, 53 ... sliding cylinder part, 54 ... valve housing chamber, 57 ... water supply hole, 58 ... upper valve body, 59 ... valve seat Tube, 60 ... Suction hole, 61 ... Valve seat, X ... Pumping channel for submersible pump, Y ... Hand pump Use pumping passage.

Abstract

L'invention porte sur une pompe à main du type tandem servant à élever de l'eau, dans laquelle une pompe immergée dans un puits profond et un dispositif d'élévation d'eau pour une pompe à main de puits profond sont attachés à un même tuyau de carter. La pompe à main du type tandem comprend : un tuyau d'élévation d'eau (8), auquel est attachée une soupape de commutation (7) destinée à commuter un trajet d'écoulement entre la pompe à main (4) et la pompe immergée (12) ; un dispositif d'unité d'élévation d'eau composite (15), auquel un tube extérieur (16) est attaché concentriquement sur l'extérieur d'un tube de cylindre (28) ayant un mécanisme de pompe incorporé, et qui comprend un trajet d'élévation d'eau de pompe immergée et un trajet d'élévation d'eau de pompe à main entre le tube extérieur (16) et le tube de cylindre (28) ; et une pompe immergée (12) qui est attachée à la partie inférieure de l'unité d'élévation d'eau composite (15) et est entraînée par un moteur d'élévation d'eau. L'unité d'élévation d'eau composite (15) et la pompe immergée (12) sont reliées chacune à la partie inférieure du tuyau d'élévation d'eau (8), et soit la pompe à main (4), soit la pompe immergée (12), est activée pendant le fonctionnement de la soupape de commutation (7) qui est attachée au tuyau d'élévation d'eau (8), en apportant ainsi la possibilité d'élever de l'eau souterraine.
PCT/JP2013/004314 2012-07-13 2013-07-12 Pompe à main du type tandem WO2014010253A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012-004295U 2012-07-13
JP2012004295U JP3178691U (ja) 2012-07-13 2012-07-13 タンデム式手押しポンプ

Publications (1)

Publication Number Publication Date
WO2014010253A1 true WO2014010253A1 (fr) 2014-01-16

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Application Number Title Priority Date Filing Date
PCT/JP2013/004314 WO2014010253A1 (fr) 2012-07-13 2013-07-12 Pompe à main du type tandem

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JP (1) JP3178691U (fr)
WO (1) WO2014010253A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018091230A (ja) * 2016-12-02 2018-06-14 株式会社川本製作所 手押しポンプ

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102247652B1 (ko) * 2020-11-10 2021-05-03 신희정 수동펌프를 이용한 양수장치

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04262079A (ja) * 1990-10-11 1992-09-17 Intevep Sa 入口弁組立体
JP2002021736A (ja) * 2000-07-07 2002-01-23 Ebara Corp 太陽電池を用いた揚水装置
WO2007063759A1 (fr) * 2005-11-29 2007-06-07 Yugen Kaisha Asahikoumuten Pompe d’aspiration
JP2008063978A (ja) * 2006-09-05 2008-03-21 Ishida Sangyo Kk 手押しポンプ装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04262079A (ja) * 1990-10-11 1992-09-17 Intevep Sa 入口弁組立体
JP2002021736A (ja) * 2000-07-07 2002-01-23 Ebara Corp 太陽電池を用いた揚水装置
WO2007063759A1 (fr) * 2005-11-29 2007-06-07 Yugen Kaisha Asahikoumuten Pompe d’aspiration
JP2008063978A (ja) * 2006-09-05 2008-03-21 Ishida Sangyo Kk 手押しポンプ装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018091230A (ja) * 2016-12-02 2018-06-14 株式会社川本製作所 手押しポンプ

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