EP0207212A1 - Pompe à membrane à double effet - Google Patents

Pompe à membrane à double effet Download PDF

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Publication number
EP0207212A1
EP0207212A1 EP86100007A EP86100007A EP0207212A1 EP 0207212 A1 EP0207212 A1 EP 0207212A1 EP 86100007 A EP86100007 A EP 86100007A EP 86100007 A EP86100007 A EP 86100007A EP 0207212 A1 EP0207212 A1 EP 0207212A1
Authority
EP
European Patent Office
Prior art keywords
pump
diaphragm
chamber
pump according
valve
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP86100007A
Other languages
German (de)
English (en)
Inventor
Lam Ming Luen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0207212A1 publication Critical patent/EP0207212A1/fr
Withdrawn legal-status Critical Current

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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
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/02—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
    • F04B43/025—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms two or more plate-like pumping members in parallel
    • F04B43/026—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms two or more plate-like pumping members in parallel each plate-like pumping flexible member working in its own pumping chamber

Definitions

  • THIS INVENTION relates to improvements in or relating to pumps and, in particular, to a liquid pump for use in various engineering fields, especially in the fields of drilling and grouting.
  • centrifugal pumps including centrifugal pumps, reciprocating pumps, vibrational pumps, screw pumps and gear pumps, etc.
  • Various kinds of liquid pumps including centrifugal pumps, reciprocating pumps, vibrational pumps, screw pumps and gear pumps, etc.
  • centrifugal pumps throughput a relatively large volume of liquid at a relatively low pressure, but the liquid throughput gets smaller if the pressure is increased.
  • a pump which is able to throughput a relatively small volume of liquid at a relatively high pressure such as a reciprocating pump, is preferred when drilling, whilst a pump which throughputs a relatively large volume of liquid (usually a centrifugal pump) is needed when cleaning the hole drilled.
  • a special pump for performing grouting operations may also be necessary.
  • three sets of power systems and pipe lines must be provided for the three different kinds of pumps, which causes a lot of service and maintenance problems whilst getting a very low efficiency.
  • a multi-stage centrifugal pump which provides a constant volume of liquid at a relatively high pressure but requires more power.
  • it is still not suitable for drilling work because it is easily clogged by the sand, mud and rock brought up by the circulating water in operation.
  • Other recently proposed pumps such as multi-­piston reciprocating pumps and screw pumps have made some improvements, but they have not fully met the requirements of drilling work in some respects. In particular, they are too large, require too much power and are uneconomical.
  • a screw pump pumping a liquid volume of 19m3 (5000 US gallons) per hour typically has a length of 4m (12 feet) and requires a power of 15KW (20 HP).
  • the invention provides a double acting diaphragm pump, which pump comprises at least one diaphragm, first and second chambers, and means for flexing the or each diaphragm, the arrangement being such that, in use, during a forward stroke the volume of the first chamber is increased and the volume of the second chamber is decreased and, during a return stroke, the volume of the first chamber is decreased and the volume of the second chamber is increased.
  • the invention enables the provision of a pump which is simple in construction and lightweight, provides a large volume of liquid at a high pressure, and requires only a small amount of power when operating with mud, water or even in cement grouting.
  • a pump which is simple in construction and lightweight, provides a large volume of liquid at a high pressure, and requires only a small amount of power when operating with mud, water or even in cement grouting.
  • only one such pump is required.
  • the operations of drilling, flushing and grouting can be carried out continuously by using the drill rod for grouting and a much higher efficiency can be achieved.
  • a pump in accordance with the invention for use in drilling engineering is a double acting, double diaphragm pump comprising two large flexible diaphragms acting in opposite senses and a low-­speed motor of 100 to 120 RPM.
  • the low-speed motor 3 is fixed on a frame 1 by means of four bolts 2 and a casing 5 of the pump is also fixed on the frame 1 by means of four bolts 4.
  • the driving shaft 6 of the motor 3 is engaged by a rotary plate 7 and a flanged shaft 9 is fixed in an eccentric hole of the rotary plate 7 by means of four bolts so that rotation of the driving shaft 6 of the motor 3 can be converted to movement of the flanged shaft 9 about the common axis of the rotary plate 7 and the motor 3.
  • On the part of the flanged shaft 9 extending beyond the rotary plate 7 are mounted two pairs of bearings with a ring 11 of variable length therebetween which makes the total length of the ring and the four bearings equal to that of the extending part of the flanged shaft 9.
  • the bearings 10 are locked axially by means of a cover 12 mounted on the outer end of the flanged shaft 9 by means of three bolts 13 and three spring washers.
  • the extending part, with the bearings, of the flanged shaft 9 slides along an elongate slot of a swing arm 15, the other end of the swing arm 15 being connected to a supporting unit 17 by means of a shaft 16 passing through a hole 18.
  • Three bearings are mounted on the shaft 16, so that the swing arm 15 can swing about the axis of the hole 18 in the supporting unit 17.
  • the driving mechanism for each diaphragm will now be described by reference to the left hand diaphragm as viewed in Figure 2, although it will be understood that both mechanisms are identical.
  • the outer end of the connecting rod 28, 29 extends through a piston head 30, 31 and is screwed into a piston cover 32.
  • the middle part of the diaphragm 33, 56 is clamped tightly between the piston head and the piston cover by the inner part of the piston cover 34 whilst the periphery of the diaphragm 33, 56 is clamped tightly between a pump cylinder 36 connected to the casing 5 and the pump cover 37 in an internal slot 35 by means of six bolts 38, whereby the pump cylinder 36 is connected to the casing 5.
  • Valve units 40, 39 are mounted on the upper and lower part of the pump cover 37, respectively.
  • the lower valve unit 39 is connected to the pump cover 37 by means of an adaptor 41 whilst the upper valve unit 40 is also connected thereto by means of an adaptor 61.
  • the valve units 39, 40 comprise steel balls 42, 43 and ball seats 44, 45, respectively.
  • the ball seats 44, 45 are similar in construction except that the upper part of one ball seat 45 has three or four small columns of triangular cross-section 46 which limit the movement of the respective steel ball 43. There are no such columns on the other valve seat 44 but two or three columns are disposed on the pump cover to perform a similar function and limit movement of the respective ball 42.
  • the pump is generally symmetrical about a centre line as viewed in Figure 2 and a T-shaped inlet pipe 48 has a central port connected to a feed pipe and two other ports connected to the inlet valves 39, 51 of the pump means of flanges 49, 50 respectively.
  • the outlet pipe 52 of the pump is also T-shaped with its centre port linked to the drilling machine or the like in use and its other two ports connected to the outlet valves 40, 55 of the pump by means of flanges 53, 54, respectively.
  • the diaphragms 33, 56 have a three layer sandwich structure.
  • the outer two layers are made up of rubber plates of 3 to 6 mm in thickness with a total thickness of 10 to 12 mm, whilst the middle layer comprises resilient sheet metal which imparts stiffness to the diaphragm.
  • the sheet metal surface is lubricated with grease to dissipate the heat from friction.
  • the centre port of the inlet pipe 48 can be joined to a water tank, flushing pond, or the like with a hose, while the centre port of the outlet pipe 52 is joined to the flushing inlet of a rotary head for a drilling machine or the like.
  • the motor shaft 6 drives the rotary plate 7 in rotation and the flanged shaft 9 fixed to the plate 7 rotates along the circumference 57.
  • the length of the left-right stroke of the flexible diaphragms is about 30mm.
  • the liquid pressure generated by the pump can reach 1.4 x 106 Nm -2 (200 PSl).
  • the liquid volume of the pump can be calculated as follows: 3.2 x 10 -3 m3 (0.85 US gallons) can be transferred per stroke; if the pistons move 100 times per minute (the motor having a speed of 100 RPM), then 0.32 m3 (85 US gallons) can be transferred per minute; therefore, the capacity of the pump is about 19 m3 (5,000 US gallons) per hour.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
EP86100007A 1985-07-05 1986-01-02 Pompe à membrane à double effet Withdrawn EP0207212A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8517150 1985-07-05
GB858517150A GB8517150D0 (en) 1985-07-05 1985-07-05 Pumps

Publications (1)

Publication Number Publication Date
EP0207212A1 true EP0207212A1 (fr) 1987-01-07

Family

ID=10581899

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86100007A Withdrawn EP0207212A1 (fr) 1985-07-05 1986-01-02 Pompe à membrane à double effet

Country Status (4)

Country Link
EP (1) EP0207212A1 (fr)
JP (1) JPS6210485A (fr)
CN (1) CN85108378A (fr)
GB (2) GB8517150D0 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008154971A1 (fr) 2007-06-20 2008-12-24 Knf Flodos Ag Pompe à membranes
US10371132B2 (en) 2017-02-10 2019-08-06 Peopleflo Manufacturing, Inc. Reciprocating pump and transmission assembly having a one-way clutch
US20210355929A1 (en) * 2020-05-18 2021-11-18 Graco Minnesota Inc. Pump having multi-stage gas compression

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9023552D0 (en) * 1990-10-30 1990-12-12 Domino Printing Sciences Plc A two-stage pump for a continuous ink jet printer
CN1055753C (zh) * 1996-08-20 2000-08-23 李崇蓉 悬挂式点焊机的气压传动装置
GB2343717A (en) * 1998-11-14 2000-05-17 Vernon Frederick Thomas Green Mechanically-driven double piston air compressor with cooling fan
CN202707394U (zh) * 2012-04-27 2013-01-30 陈绍丽 单连杆联动双腔式计量泵
GB2524155A (en) * 2014-01-30 2015-09-16 Blue White Ind Ltd Multiple diaphragm pump
DE102016204487B4 (de) 2016-03-17 2017-12-07 Gardner Denver Thomas Gmbh Membranpumpe
CN106762576A (zh) * 2016-12-30 2017-05-31 张家港科康智能科技有限公司 一种双头隔膜泵
US11221004B2 (en) 2017-07-12 2022-01-11 Blue-White Industries, Ltd. Multiple diaphragm pump
CN108374779A (zh) * 2018-04-26 2018-08-07 李则穰 一种洗车用脚踩式水泵

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH251212A (fr) * 1946-02-05 1947-10-15 Hanvag Ges Fuer Tech Vervollko Pompe à membrane.
FR64369E (fr) * 1953-05-09 1955-11-10 Ets A Guiot Perfectionnements apportés aux pompes à membranes multiples
DE1453543A1 (de) * 1963-09-06 1969-05-29 Ernst Kuttig Membranpumpe
US3488763A (en) * 1968-02-16 1970-01-06 Alden A Lofquist Jr Rolling seal pump
FR2247110A5 (en) * 1973-10-05 1975-05-02 Roche Andre Quick return reciprocating drive - has swinging piston arms reciprocated alternately by eccentric discs
FR2247111A6 (en) * 1973-10-05 1975-05-02 Gurtner Sa Membrane pump for liquefied gas - pumping and safety membranes have concentric annular corrugations
US4008984A (en) * 1975-10-23 1977-02-22 Scholle William R Pump apparatus
FR2491157A1 (fr) * 1980-09-29 1982-04-02 Mac Canns Eng Mfg Pompe a valve d'inversion actionnee par un double diaphragme

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB229731A (en) * 1923-10-25 1925-02-25 Samuel Mitchell Harding Improved piston pump
GB386250A (en) * 1932-07-18 1933-01-12 Rifat Avigdor Improvements in or relating to fuel feed pumps, more particularly for aircraft
GB622649A (en) * 1946-03-29 1949-05-05 Self Priming Pump & Eng Co Ltd A new or improved diaphragm pump
GB750552A (en) * 1953-05-09 1956-06-20 Ets A Guiot Improvements in double diaphragm pumps
GB842308A (en) * 1957-11-14 1960-07-27 Guinard Paul Andre Improvements in or relating to membrane pumps
FR81610E (fr) * 1962-01-02 1963-10-18 Pompe permettant de refouler des liquides abrasifs ou corrosifs et plus particulièrement adaptée à la pulvérisation de produits utilisés dans le traitement des cultures
GB1060298A (en) * 1963-12-09 1967-03-01 Friedrich Hermann A mechanism for converting to-and-fro motion into rotary motion
GB1469400A (en) * 1973-06-12 1977-04-06 Halstead J Apparatus for the removal of dental plaque or caries
GB1548888A (en) * 1975-04-15 1979-07-18 Selwood Ltd William R Rumps
US4242061A (en) * 1978-09-28 1980-12-30 Hartley E Dale Double diaphragm pump

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH251212A (fr) * 1946-02-05 1947-10-15 Hanvag Ges Fuer Tech Vervollko Pompe à membrane.
FR64369E (fr) * 1953-05-09 1955-11-10 Ets A Guiot Perfectionnements apportés aux pompes à membranes multiples
DE1453543A1 (de) * 1963-09-06 1969-05-29 Ernst Kuttig Membranpumpe
US3488763A (en) * 1968-02-16 1970-01-06 Alden A Lofquist Jr Rolling seal pump
FR2247110A5 (en) * 1973-10-05 1975-05-02 Roche Andre Quick return reciprocating drive - has swinging piston arms reciprocated alternately by eccentric discs
FR2247111A6 (en) * 1973-10-05 1975-05-02 Gurtner Sa Membrane pump for liquefied gas - pumping and safety membranes have concentric annular corrugations
US4008984A (en) * 1975-10-23 1977-02-22 Scholle William R Pump apparatus
FR2491157A1 (fr) * 1980-09-29 1982-04-02 Mac Canns Eng Mfg Pompe a valve d'inversion actionnee par un double diaphragme

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008154971A1 (fr) 2007-06-20 2008-12-24 Knf Flodos Ag Pompe à membranes
US8474365B2 (en) 2007-06-20 2013-07-02 Knf Flodos Ag Diaphragm pump
US10371132B2 (en) 2017-02-10 2019-08-06 Peopleflo Manufacturing, Inc. Reciprocating pump and transmission assembly having a one-way clutch
US20210355929A1 (en) * 2020-05-18 2021-11-18 Graco Minnesota Inc. Pump having multi-stage gas compression
US11873802B2 (en) 2020-05-18 2024-01-16 Graco Minnesota Inc. Pump having multi-stage gas compression

Also Published As

Publication number Publication date
GB8616420D0 (en) 1986-08-13
GB2177758B (en) 1989-01-11
JPS6210485A (ja) 1987-01-19
GB2177758A (en) 1987-01-28
CN85108378A (zh) 1986-12-31
GB8517150D0 (en) 1985-08-14

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