EP0001463A1 - Plunger pump - Google Patents

Plunger pump Download PDF

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Publication number
EP0001463A1
EP0001463A1 EP78200201A EP78200201A EP0001463A1 EP 0001463 A1 EP0001463 A1 EP 0001463A1 EP 78200201 A EP78200201 A EP 78200201A EP 78200201 A EP78200201 A EP 78200201A EP 0001463 A1 EP0001463 A1 EP 0001463A1
Authority
EP
European Patent Office
Prior art keywords
plunger
pump
compression chamber
anyone
compression
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Withdrawn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
EP78200201A
Other languages
German (de)
English (en)
French (fr)
Inventor
Augustinus Johannes Petrus Maria Van Boxtel
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 EP0001463A1 publication Critical patent/EP0001463A1/en
Withdrawn legal-status Critical Current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
    • F04B7/00—Piston machines or pumps characterised by having positively-driven valving
    • F04B7/04—Piston machines or pumps characterised by having positively-driven valving in which the valving is performed by pistons and cylinders coacting to open and close intake or outlet ports
    • 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
    • F04B3/00—Machines or pumps with pistons coacting within one cylinder, e.g. multi-stage
    • F04B3/003—Machines or pumps with pistons coacting within one cylinder, e.g. multi-stage with two or more pistons reciprocating one within another, e.g. one piston forning cylinder of the other
    • 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
    • F04B5/00—Machines or pumps with differential-surface pistons

Definitions

  • the invention relates to a plunger pump comprising a housing, a plunger adapted to reciprocate in a compression chamber provided in said housing and an inlet port and an outlet port for admitting and evacuating fluid respectively to and from the compression chamber respectively, the inlet port being closed by the plunger at the beginning of the compression stroke.
  • the invention has for its object to provide a pump of the kind set forth, which can be manufactured in a simple manner with high accuracy and by means of which even very small amounts of fluid, for example, a gas or a liquid, can be accurately and reproduceable dosed.
  • plunger portions located on both sides of the plunger portion actively operating in the compression chamber are guided in sealing relationship in parts of the housing in a manner such that the compression chamber is only bounded by one side of the plunger and a part of the pump opposite thereto.
  • the volume of the compression chamber can be imparted any desired magnitude by using means that can be manufactured in a simple manner whilst nevertheless an effective displacement and/or compression of the fluid can take place.
  • Such a pump which is particularly suitable for the displacement of very small quantities, may be employed for many purposes, for example, for an mlzation of fuel or other liquids, the accurate displacement of small amounts of fluid in certain processes and so on.
  • the pump shows in Fig. 1 comprises a plunger consisting of a first cylindrical portion 1 and a second cylindrical portion 2 the diameter of which is smaller than that of the portion 1.
  • the plunger is adapted to reciprocate in a bore provided in a pump housing 3.
  • the bore 4 communicates with a bore 5, in which the plunger portion 2 is guided in sealing relationship.
  • a passage 6 which communicates through one or more radial transverse bores. 7, which may also extend at an angle to the radial line with the outer circumference of the thinner portion 2 of the plunger.
  • a connecting stud 8 Near the lower end of the plunger the passage 6 communicates with a connecting stud 8, for example, for connecting a flexible hose or the like.
  • an outlet passage 9 is provided in the housing 3.
  • the plunger 1, 2 may be reciprocated, for example with the aid of a lug or the like (not shown).
  • a flexible supply conduit for the feed of fluid, for example, gas or liquid will be connected with the connecting stud 8.
  • the outer diameter of the plunger portion 2 differs appreciably from the inner diameter of the bore 4 for the sake of clarity of representation, these differences may be reduced at will in a simple manner to particularly low values, for example, less than 0.1 mm without involving difficulties in manufacture so that the compression chamber may have a very small volume, as a result of which with the aid of such a plunger pump very small amounts of fluid can be displaced and/or compressed whilst the quantity of fluid displaced at every stroke of the plunger will be the same.
  • inlet port in the plunger itself, it may, as an alternative, be provided in the housing, as is indicated in fig. 1 by broken lines for the inlet port 10. As soon as the top end of the portion 1 of the plunger blocks the opening of the passage the compression stroke will start.
  • the end of the plunger portion 1 joining the plunger portion 2 may extend in helical fashion around the centre line of the plunger, which provides the possibility of varying the instant of blocking of the inlet port 10 by turning the plunger so that the magnitude of the compression stroke can be controlled.
  • the lug drive of the plunger may be constructed so that it permits of obtaining an adjustable compression stroke.
  • the plunger portion 11 of smal ler diameter is disposed eccentrically to the plunger portion 12 of larger diameter.
  • These two portions may be integral with one another or the portions 11 and 12 may be manufactured independently of one another and be interconnected, for example, by pressing a ping 13 integral with the portion 11 into a matching bore of the portion 12.
  • the housing consists of two portions 14 and 15, whilst the the portion 11 is accommodated in sealing relationship in a bore 16 of the portion 14 and the portion 12 can reciprocate in a bore 17 in the housing portion 15. With the top end of the bore 17 again communicates an outlet port 18.
  • the portion 11 has a bore 19 opening out at the top end of the plunger, which end is located at a connecting stud 20, which is integral with the housing portion 14 and which serves for connecting a fluid feed conduit.
  • the bore 19 communicates through one ore more transverse passages with the outer circumference of the plunger portion 11. From fig. 2 it will be seen that the cross sectional area of the passage 21 decreases in the direction towards the thicker portion 12 of the plunger. This structure is advantageous in the event of a variable stroke of the pump plunger so that according as the stroke increases and hence the passage 21 emerges further beneath the bottom side of the housing 14 a larger. flow passage is obtained for feeding fluid to the compression chamber.
  • a plurality of feeding slots 22 are provided instead of the feeding passage 21, said slots being relatively off sett in the direction of movement of the plunger.
  • passages 23 may be provided one below the other in the direction of movement of the plunger the diameter of said passages gradually decreasing towards the thicker plunger portion.
  • the portion 1 of the recepro- catory plunger has a bore consisting of two portion 24 and 25 accommodating a further plunger comprising a first portion 26 sealingly fitting in tie bo re 24 and a portion 27 of larger diameter sealingly fitting in the bore 25.
  • the plunger 26, 27 has an inlet passage 28 through which fluid can be fed into the compression chamber, which is bounded by the outer periphery of the plunger pnrtion 26 and the inner circumference of the bore 25.
  • This compression chamber communicates through a bore 29 in the plunger 1, 2 with the compression chamber bounded by the outer periphery of the plunger portion 2 and the inner circumference of the bore 4.
  • the plunger 26, 27 preferably has a further bore establishing an open communication between the bore 24 and the atmosphere.
  • the plunger 26, 27 When the plunger 26, 27 is driven with the aid of a lug, the fluid fed into the compression chamber bounded uy the plunger portion 26 and the wall of the bore 25 will be compressed in the manner described above and displaced respectively and pumped through the passage 29 towards the compression chamber of smaller volume, bounded by the plunger portion 2 and the wall of the bore 4.
  • the plunger 1, 2 At the end of the stroke of the plunger 26, 27 in the compression chamber in the plunger 1, 2 the plunger 1, 2 will also be displaced upon a further displacement of the plunger 26, 27 so that the fluid fed under pressure into the compression chamber bounded by the plunger portion 2 and the bore 4 can be further compressed. In this way a stepwise densification of the fluid can be achieved.
  • the plunger 1, 2 may be spring-loaded in order to avoid premature displacement of this plunger 1,2.
  • the plunger employed comprises three cylindrical portions 30 31 and 32 which have stepwise larger diameters and are locat4d in matching bores in the housing 33 in a manner such that two compression chamber 34 and 35 are formed.
  • the compression chamber 34 communicate an inlet port 36 and an outlet port 37 whereas an inlet port 28 and an outlet port 39 communicates with the compression chamber 35.
  • a desired amount of fluid can be conducted away simultaneously through the ports 37 and 39. It is thus possible for example. for mixing two fluids to displace simultaneously small metered amounts of said fluids to feed them for example, to an atomizer.
  • one end of a cylindrical pin 41 is fastened in a housing 40 in a matching opening provided in said housing.
  • the end of a plunger 42 is furthermore arranged in an opening .,in the housing, whilst as shown in fig. 8 the lower end of the pin 41 and the top end of the plunger 42 have recesses so that these ends bound a compression chamber, the cross section of which is most clearly illustrated in fig. 9.
  • compression chambers of very small volume can be obtained with the aid of parts that can be readily and accurately manufactured with the desired tolerances form the desired materials.
  • the pump may or may not have an adjustable plunger stroke and valves may be joined to the outlet ports to prevent a return flow of fluid after the termination of the compression stroke.
  • the plunger may be constructed so that the transition between the thicker and the thinner portions extends helically or stepwise so that after the compression chamber is filled via the passage 10 the plunger can be turned about its centre line into a position. in which the thicker portion of the plunger blocks the passage 10 so that via the passage 10 no fluid can flow back, whereas the plunger is still in its initial position.
  • the embodiment may furhtermore be constructed so that the plunger can be displaced stepwise mechanically or manually, for example, when used as a syringe and.be fixed in various position so that the amount of fluid contained initially in the compression chamber can be dispensed in portions.
  • the plunger pump shown in fig. 10 structurally corresponds largely with the plunger pump shown in fig. 1 and corresponding parts are designated by the same reference numerals.
  • the plunger portion 1 has a transverse bore 46 in which two partitions 47 are disposed, between a hose 48 of flexible material is arranged.
  • the ends of said hose 48 whose diameter in the no-load state is smaller than the inner diameter of the bore 46, communicate freely through apertures provided in the partitions 47 with the ends of the bore 46.
  • One end of the bore 46 communicates through a bore 49 extending axially in the plunger 1 with the compression space.
  • Fig. 11 shows that at the level of the opening of the feed chan nel 7 the outer periphery of the plunger portion 2 may be provided with a constriction becoming shallower in the direction towards the plunger portion 1.
  • said construction is bounded by tLe portion 51 of a conical surface, said portion 51 may obviously have any desirable shape.
  • the lower boundary edge of the surface 51 will arrive at a given instant at the plane where the bore having a diameter corresponding with the diameter of the plunger 2 changes over to the bore having a diameter corresponding with that of the plunger 1.
  • the connection between the fluid inlet conduit 6,7 in the plunger at the space located above the plunger 1 will gradually increase and at an upward movement of the plunger the passage of said connection will gradually decrease.
  • the shape of the surface 51 thus influences the supply of fluid into the compression chamber during the suction stroke and the increase in pressure during the compression stroke; therefore the surface 51 may be shaped in the form most suitable for the operational conditions and the fluids to be handled.
  • the outer surface of the plunger may have a local notch at the opering of the passage 7.
  • the plunger 1 has a circular recess 52 bounded by a wall portion 53 of the plunger surface shaped so that the circumference of said wall portion 53 becomes gradually smaller in a direction away from the plunger 2.
  • the housing 3 has a channel 54 opening out at one end in the top ends of the bore 4 and at the other end at a givendistance from said top end.
  • the lower end of the channel 54 is blocked by the plunger 1 as is indicated in fig. 11.
  • the pressure increase in the compression chamber is controlled on the one hand by the shape of the surface 51, but on the other hand also by the shape of the surface 53, since at a given instant the lower end of the conduit 54 will come at the level of the surface 53 and the shape of this surface will be determinative of the manner in which this opening 54 and hence the outflow of fluid from the compression chamber during the compression stroke through the conduit 54 are enabled.
  • the outlet of the pressurized fluid then takes place from the space 52 through the passage 55.
  • FIG. 12 A further possibility of acting upon the feed of fluid from the passage 6,7 of the plunger is illustrated in fig. 12. From this figure it will be seen that the outer periphery of the plunger portion 2 has a helical groove 56 communicating with the opening of the passage 7 and extending from the opening of the bore 7 towards the plunger portion 1.
  • the cross-section of the groove 56 may be gradually varied so that the cross section is largest at the level of the opening of the bore 7 and iecreases gradually in the direction towards the end remote from the opening of the bore 7.
  • FIG. 13 A further alternative is illustrated in fig. 13, in which the bore 7 opens out in a recess extending at right angels to the longitudinal axis of the plunger portion 2 and having a semi circular cross section 57. It will be evident that during the downward suction stroke of the plunger portion 2 the lower part of the recess 57, as seen in fig. 13., will first communicate with the interior of the bore 4 forming the compression chamber, said communication gradually increasing in accordance with the variation of the recess 57 during the suction stroke. Also in this the inverse will occur during the compression stroke so that the pressure increase in the compression chamber can be influenced.
  • the fluid inlet passage 58 in the plunger portion 2 has a stepped shape, the resulting shoulder 59 in the passage 58 supporting a cover plate 60 having at the circumference a plurality of equidistant pass slots. 61.
  • a hose 62 of flexible material which is closed at itsLlower end 63.
  • fluid can flow through the passages 61 and along the outer periphery of the hose 62 and transverse bores 64 provided in the plunger portion 2 into the bore 4 forming the compression chamber.
  • pressure will be built up in the compression chamber 4, as a result of which the flexible hose 62, 63 will be deformed so that this hose will contact the inner wall of the part of the bore 58 located below the plate 6n so that rapidly a seal of large surface will be formed, a return flow of fluid being thus effectively counteracted at the very beginning of the compression stroke.
  • the hose 62 When the hose 62 is suitably sealed in its connection at the top, the hose 62 may be left open on the lower side so that during the compression stroke pressurized fluid is pressed into the hose which is thus firmly pressed against the wall of the bore 58.
  • Fig. 15 shows an embodiment in which the top side of the :bore forming the compression caamber communicates with one end of a passage 65, the other end of which communicates with that part of the bore in which the plunger portion 1 can reciprocate.
  • the plunger portion 1 is provided at the outer periphery with a plurality of grooves 66 extending one above the other around the plunger.
  • the housing has an outlet port 67 located at the same level as the lower end of the passage 65.
  • Fig. 16 shows an embodiment having a three-step plunger in which a first plunger portion 68 of comparatively large diameter is connected with a plunger portion 69 of considerably smaller diameter, whilst the end of the plunger 69 remote from the plunger 68 is provided eccentrically with a third plunger 70 in the manner shown, in figs. 2 and 3.
  • the plungers are adapted to reciprocate in known manner in a housing 71 having matching bores.
  • the fluid can be fed into the compression space located above the plunger 71 through passages 72 in the housing.
  • the fluid can be fed to the compression spaces located above the plunger 69 in a manner similar to that described for the embodiment shown in figs. 2 and 3 and this is not shown in this figure.
  • the fluid is conducted away from the compression space located above the plunger 68 through a conduit 73 and the pressurized fluid is conducted out of the compression space located above the plunger 69 through a conduit 74.
  • These conduits may open out in a common conduit 75 or the like so that the two amounts of fluid are mixed up. It will be obvious that in this way a possibility is created to effectively mix a large amount of a first fluid with a small or very small amount of another fluid. Therefore, such a pump may be employed in a very efficacious manner for mixing combustion air and heavy oil for a fuel system and for mixing air and water for an air-conditioning device.
  • Fig. 17 shows an embodiment of a double-acting plunger pump comprising a housing 76 having a bore 77, in which a plunger 78 having a diameter matching that of the bore is displaceable.
  • a plunger 78 having a diameter matching that of the bore is displaceable.
  • To the distal ends of the plunger 78 are fastened plungers 79 and 80 having smaller di ame - ters.
  • a fluid inlet channel 81 which opens out through transverse bores 82 and 83 respectively in the compression chambers formed in the respective parts of the bore 77 located below and above the plunger 78 respectively.
  • the plunger 83 is passed through a wall of the housing 76, which also has an outlet port 84.
  • the plunger 81 is located in a sleeve 85, in which an outlet port 86 is provided.
  • the sleeve 85 is screwed into the open end of the bore 77 and at will the sleeve 85 can be screwed to a greater or smaller depth into the housing in order to control the pump displacement.
  • the two outlets 86 and 84 may be arranged on a common member or they may control separate members.
  • such an adjustable stroke vulume may also be achieved for the other side of the pump shown in fig. 17, whilst adjustment of the stroke volume may as well be achieved in a single-acting pump in the manner described above.
  • Fig. 18 shows a plunger part 2 with a passage 6, a transverse bore 7 for the supply of fluid to be compressed.
  • the bore 6 extending up to the top end of the plunger portion 2 holds a pin 87, the thickened top end 88 of which has external screwthread and is screwed in the screwthreaded top end of the bore 6 having a larger diameter. It will be obvious that by screwing the pin 87 to a greater or smaller depth the size of the passage 7 and hence the inflow of fluid during the suction stroke can be varied.
  • Fig. 19 shows a valve structure which can be very effectively employed in conjunction with one of the plunger pumps described above.
  • the valve housing 89 has an inlet conduit 90, which opens out in a chamber 91, which communicates in a manner not shown with the suction side of a pump of the like.
  • the chamber 91 accommodates a spiral spring 92, one end of which surrounds the opening of the inlet port 90 and the other end of which engages a plate 93 connected with the spring.
  • the spring 92 will be in the position shown in the figure, in which a large passage is free between the turns of the spring for the incoming fluid.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Electromagnetic Pumps, Or The Like (AREA)
  • Details Of Reciprocating Pumps (AREA)
EP78200201A 1977-09-22 1978-09-21 Plunger pump Withdrawn EP0001463A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL7710381 1977-09-22
NL7710381A NL7710381A (nl) 1977-09-22 1977-09-22 Plunjerpomp.

Publications (1)

Publication Number Publication Date
EP0001463A1 true EP0001463A1 (en) 1979-04-18

Family

ID=19829223

Family Applications (1)

Application Number Title Priority Date Filing Date
EP78200201A Withdrawn EP0001463A1 (en) 1977-09-22 1978-09-21 Plunger pump

Country Status (4)

Country Link
EP (1) EP0001463A1 (nl)
JP (1) JPS5499203A (nl)
AU (1) AU4010378A (nl)
NL (1) NL7710381A (nl)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0288981A2 (en) * 1987-04-28 1988-11-02 Sumitomo Electric Industries Limited Plunger pump
CN109209806A (zh) * 2018-11-19 2019-01-15 宁波修远机电有限公司 一种往复增压泵

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100931720B1 (ko) * 2009-05-07 2009-12-14 유한회사 윤모터스 휠 조립체의 열전도 링

Citations (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE115508C (nl) *
GB1054366A (nl) *
DE261425C (nl) *
GB190920995A (en) * 1908-09-15 1910-06-09 Emile Blattner Improvements in Oil Distributing Pumps for Motors.
FR441684A (fr) * 1911-10-12 1912-08-13 Pokorny & Wittekind Maschinenbau A G Dispositif de réglage pour pompes alimentant de combustibles liquides les moteurs à explosion
GB191128981A (en) * 1911-12-22 1912-10-31 Ernest William Cash Improvements in and relating to Pumps for Elastic Fluids.
GB166678A (en) * 1920-04-17 1921-07-18 Thomas Gordon Improvements in pump piston
GB171858A (en) * 1920-10-06 1921-12-01 Louis Frederick Rudston Fell Improvements in and relating to air compressors
US1511962A (en) * 1924-10-14 hanson
GB232286A (en) * 1923-12-14 1925-04-14 Cecil Hughes Improvements in or connected with liquid pumps
FR588150A (fr) * 1924-05-09 1925-04-30 Ehrhardt & Sehmer Ag Perfectionnement apporté aux compresseurs à étages pour pressions très élevées
DE415434C (de) * 1925-06-29 Otto Stannebein Luftfuellvorrichtung fuer Druckwindkessel, Druckhauben usw
DE419438C (de) * 1924-09-16 1925-09-30 Fried Krupp Akt Ges Insbesondere zur Foerderung des Kondensats aus einem Kondensator in einen Dampferzeuger bestimmte Kolbenpumpe
US1651682A (en) * 1927-02-28 1927-12-06 Duro Co Pump
FR44670E (fr) * 1933-11-28 1935-03-20 Pompe à combustible, auto-régulatrice
FR813057A (fr) * 1935-10-02 1937-05-25 Procédé et dispositif de réglage pour pompes alternatives
CH225029A (de) * 1939-05-09 1942-12-31 Teves Maschinen & Armaturenfab Zweistufiger Druckerzeuger.
US2356511A (en) * 1941-03-29 1944-08-22 Descourtis Paul Piston and cylinder system
US2383324A (en) * 1942-08-24 1945-08-21 Clair Camille Clare Sprankl Le Reciprocating pump
FR957405A (nl) * 1950-02-20
GB662097A (en) * 1949-06-02 1951-11-28 Wilton Row Extensions Ltd Improvements in or relating to reciprocating pumps
US3327633A (en) * 1964-03-07 1967-06-27 Philips Corp Dosing pump operating in opposite phases for dosing liquid or gaseous media
US3347264A (en) * 1963-12-23 1967-10-17 Stuart E Bunn Suction and discharge valve
DE2128635A1 (de) * 1971-06-09 1972-12-28 Langen & Co, 4000 Düsseldorf Hydraulische Kolbenpumpe
US3737258A (en) * 1971-06-07 1973-06-05 Caterpillar Tractor Co Fuel injection pump with timing port
DE2203135A1 (de) * 1972-01-24 1973-08-09 Bade Peter Dipl Ing Mehrstufiger selbstregelnder druckoelerzeuger
FR2205636A1 (nl) * 1972-11-03 1974-05-31 V Nauchno Issle
GB1447011A (en) * 1974-04-24 1976-08-25 Sterling Winthrop Group Ltd Apparatus for dispensing pastes creams and liquids

Patent Citations (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE415434C (de) * 1925-06-29 Otto Stannebein Luftfuellvorrichtung fuer Druckwindkessel, Druckhauben usw
GB1054366A (nl) *
DE261425C (nl) *
FR957405A (nl) * 1950-02-20
DE115508C (nl) *
US1511962A (en) * 1924-10-14 hanson
GB190920995A (en) * 1908-09-15 1910-06-09 Emile Blattner Improvements in Oil Distributing Pumps for Motors.
FR441684A (fr) * 1911-10-12 1912-08-13 Pokorny & Wittekind Maschinenbau A G Dispositif de réglage pour pompes alimentant de combustibles liquides les moteurs à explosion
GB191128981A (en) * 1911-12-22 1912-10-31 Ernest William Cash Improvements in and relating to Pumps for Elastic Fluids.
GB166678A (en) * 1920-04-17 1921-07-18 Thomas Gordon Improvements in pump piston
GB171858A (en) * 1920-10-06 1921-12-01 Louis Frederick Rudston Fell Improvements in and relating to air compressors
GB232286A (en) * 1923-12-14 1925-04-14 Cecil Hughes Improvements in or connected with liquid pumps
FR588150A (fr) * 1924-05-09 1925-04-30 Ehrhardt & Sehmer Ag Perfectionnement apporté aux compresseurs à étages pour pressions très élevées
DE419438C (de) * 1924-09-16 1925-09-30 Fried Krupp Akt Ges Insbesondere zur Foerderung des Kondensats aus einem Kondensator in einen Dampferzeuger bestimmte Kolbenpumpe
US1651682A (en) * 1927-02-28 1927-12-06 Duro Co Pump
FR44670E (fr) * 1933-11-28 1935-03-20 Pompe à combustible, auto-régulatrice
FR813057A (fr) * 1935-10-02 1937-05-25 Procédé et dispositif de réglage pour pompes alternatives
CH225029A (de) * 1939-05-09 1942-12-31 Teves Maschinen & Armaturenfab Zweistufiger Druckerzeuger.
US2356511A (en) * 1941-03-29 1944-08-22 Descourtis Paul Piston and cylinder system
US2383324A (en) * 1942-08-24 1945-08-21 Clair Camille Clare Sprankl Le Reciprocating pump
GB662097A (en) * 1949-06-02 1951-11-28 Wilton Row Extensions Ltd Improvements in or relating to reciprocating pumps
US3347264A (en) * 1963-12-23 1967-10-17 Stuart E Bunn Suction and discharge valve
US3327633A (en) * 1964-03-07 1967-06-27 Philips Corp Dosing pump operating in opposite phases for dosing liquid or gaseous media
US3737258A (en) * 1971-06-07 1973-06-05 Caterpillar Tractor Co Fuel injection pump with timing port
DE2128635A1 (de) * 1971-06-09 1972-12-28 Langen & Co, 4000 Düsseldorf Hydraulische Kolbenpumpe
DE2203135A1 (de) * 1972-01-24 1973-08-09 Bade Peter Dipl Ing Mehrstufiger selbstregelnder druckoelerzeuger
FR2205636A1 (nl) * 1972-11-03 1974-05-31 V Nauchno Issle
GB1447011A (en) * 1974-04-24 1976-08-25 Sterling Winthrop Group Ltd Apparatus for dispensing pastes creams and liquids

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0288981A2 (en) * 1987-04-28 1988-11-02 Sumitomo Electric Industries Limited Plunger pump
EP0288981A3 (en) * 1987-04-28 1990-02-28 Sumitomo Electric Industries Limited Plunger pump
CN109209806A (zh) * 2018-11-19 2019-01-15 宁波修远机电有限公司 一种往复增压泵

Also Published As

Publication number Publication date
JPS5499203A (en) 1979-08-04
AU4010378A (en) 1980-03-27
NL7710381A (nl) 1979-03-26

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