EP0083829A1 - Pompe d'éxtrusion à pression réglable - Google Patents

Pompe d'éxtrusion à pression réglable Download PDF

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Publication number
EP0083829A1
EP0083829A1 EP82300124A EP82300124A EP0083829A1 EP 0083829 A1 EP0083829 A1 EP 0083829A1 EP 82300124 A EP82300124 A EP 82300124A EP 82300124 A EP82300124 A EP 82300124A EP 0083829 A1 EP0083829 A1 EP 0083829A1
Authority
EP
European Patent Office
Prior art keywords
housing
adjustable
pump
stator
cavity pump
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.)
Ceased
Application number
EP82300124A
Other languages
German (de)
English (en)
Inventor
Eugene F. Kopecky
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
Priority to EP82300124A priority Critical patent/EP0083829A1/fr
Publication of EP0083829A1 publication Critical patent/EP0083829A1/fr
Ceased 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
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
    • F04C2/107—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth
    • F04C2/1071—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth the inner and outer member having a different number of threads and one of the two being made of elastic materials, e.g. Moineau type
    • F04C2/1073—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth the inner and outer member having a different number of threads and one of the two being made of elastic materials, e.g. Moineau type where one member is stationary while the other member rotates and orbits
    • F04C2/1075—Construction of the stationary member

Definitions

  • the present invention relates generally to pumps and pertains particularly to extrusion pumps.
  • a Moineau pump which includes a rigid cylinder or cylindrical housing in which is mounted an elastomeric pump stator In an unstressed condition.
  • the stator includes a spiral interior bore corresponding to the external shape of an elongated spiral shaped rotor or impeller, which passes through the cyli nder.
  • the rotor is preferably formed of steel or the like, and upon rotation deforms the interior of the stator, so achieving a pumping action.
  • Such pumps in accordance with the prior art are shown in U. S. Patent Nos. 3, 006, 615 issued October 21, 1961 to W. R. Mason, Jr., and 3,093,364 issued June 11, 1963 to Schoonover.
  • Such pumps have been, and are extensively used in the construction industry today.
  • One drawback to such pumps is that the bore of the stator wears at a rapid rate requiring replacement quite frequently. Because of the structure this also requires, replacement of the housing of the pump section which as previously described generally comprises a cylindrical housing formed of a section of pipe on the order of three to four inches in diameter in which the elastomeric stator is molded. The frequent and continuous replacement of this unit becomes qulte expensive over a period of time.
  • Another object of the invention is to provide an improved extrusion pump having a stator that is replaceable independent of the housing.
  • a further object of the invention is to provide an improved extrusion pump having a stator that is adjustable on the rotor to maintain or increase the pressure of the pump.
  • an extrusion pump includes an elastomeric stator that is detachably mounted in an adjustable housing such that the stator can be replaced independent of the housing and the housing is radially adjustable to adjust the pressure of the stator on the rotor, and thereby the . pressure of the pump.
  • FIG. 1 illustrated in Figure 1 is a pumping unit designated generally by the numeral 10, showing an exemplary preferred embodiment of the invention.
  • the unit as illustrated replaces units as disclosed in the aforementioned Mason and Schoonover patents.
  • the unit 10 is detachably mounted between an inlet chamber or hopper 12 shown in phantom.
  • a slurry is fed into the pump unit at 12 and exits the unit at 14 and generally through a flexible hose or the like, and some form of nozzle or other spraying or application device, not shown.
  • the unit includes a generally cylindrical housing 15.
  • the basic elements of the housing 15 are three identical segments 16 of a generally arcuate or semicircular configuration, each having a stub flange 18 extending along one edge, which cooperatively engages with a cap flange 20 along the opposite edge of an adjacent identical housing segment.
  • the ends of each housing segment are formed or shaped with cylindrical outer surfaces or sections 22 and 24, for the purpose of receiving a pair of identical circular or band clamps 26.
  • These end portions additionally provide means for receiving end caps or adapters 28 and 30, each including a threaded cylindrical portion 32 and 34 respectively, for fitting into the inlet and outlet sections 12 and 14 of the pump system or assembly.
  • the unit replaces the conventional pipe section having a fixed molded liner of the prior art.
  • the housing 15 as best seen in Figures 3 and 4 has an inner, generally cylindrical chamber defined by an inner arcuate surface 36 of the sections.
  • the sections with the flange construction form a generally cylindrical chamber having a longitudinal groove or slot along the edge (i.e. formed between the flanges) of each adjacent section, for receiving a replaceable, generally cylindrical liner 38 having a plurality of ribs 40 extending along the length thereof on the outer surface. These ribs extend between the flanges of the adjacent sections of the housing and are gripped therebetween for retaining the liner in the housing and prevent rotation thereof.
  • the liner is thus detachably mounted within the housing and is easily replaceable.
  • the housing is held together around the inner lining 38 and is adjustable therewith by means of the clamps 26.
  • the inner lining 38 is of an elastomeric material and is formed with a helical shaped bore 42 extending the length thereof.
  • the preferred form is that of a double helix, although a single or multiple helix can be used.
  • the liner is preferably constructed of a resilient, abrasion resistant material such as molded rubber or polyurethane, or similar plastic materials. The shore hardness of the material can be selected for different applications and for optimum wear pressure adjustment and the like.
  • a pumping rotor 44 also having a helical configuration, is mounted within the helical bore 42 of the resilient liner 38. This rotor rotates within the liner relative to the liner deforming the liner imparting pumping action to fluidized medium within the pump chamber.
  • a drive shaft 52 is drivingly connected to the rotor 44 and is connected to a suitable source of power such as a prime mover.
  • the radial dimensions of the bore 42 may be continually adjusted radially Inward over a large range of adjustment to maintain a higher pressure within the pump.
  • This radial compression adjustment of the liner Is accomplished by adjustably tightening the clamps 26 on the outer housing, thus pulling segments 16 of the housing Inward for adjustment of the liner. Because of the construction of the housing and the liner itself the segments are pulled inward at an equal rate and results In a uniform, substantially equal adjustment of the liner. Once the maximum adjustment of the liner has been utilized, the liner is removed and a new liner is placed In the housing.
  • end caps 28 and 30 are held in place by a plurality of elongated bolts 46 which extend through the bore in lugs 48 on the end cap 30 and threadably engage bores in lugs 50 on the end cap 28.
  • each machine is provided with a simple, single, adjustable housing unit 10 which replaces the conventional combined stator and housing unit.
  • Replaceable liners are then manufactured to fit the housing and only the liner need be replaced when excessive wear has occurred. This considerably reduces maintenance costs of such units since only the liner itself need be manufactured after the initial housing or a single housing unit has been supplied.
  • the present invention provides the additional feature of the adjustability which not only increases the life of the particular inserts or liners, but also provides the capability of adjusting the pressure output of the pump.
  • the housing unit may simply be removed from the pumping unit, taken apart and the liner replaced.
  • the entire unit may be removed, or simply the center section.
  • the center section may be removed by removing bolts 46 and separating the end caps 28 and 30.
  • the clamps 26 may then be removed and the liner 38 removed from Inside the segments of the housing and discarded.
  • a new liner is then Inserted in place and the clamps 26 again placed around the housing segments and secured in place. Appropriate adjustment then may be accomplished by adjusting the clamps 26 to achieve the desired pump pressure.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
EP82300124A 1982-01-11 1982-01-11 Pompe d'éxtrusion à pression réglable Ceased EP0083829A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP82300124A EP0083829A1 (fr) 1982-01-11 1982-01-11 Pompe d'éxtrusion à pression réglable

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP82300124A EP0083829A1 (fr) 1982-01-11 1982-01-11 Pompe d'éxtrusion à pression réglable

Publications (1)

Publication Number Publication Date
EP0083829A1 true EP0083829A1 (fr) 1983-07-20

Family

ID=8189545

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82300124A Ceased EP0083829A1 (fr) 1982-01-11 1982-01-11 Pompe d'éxtrusion à pression réglable

Country Status (1)

Country Link
EP (1) EP0083829A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0353553A2 (fr) * 1988-07-30 1990-02-07 Gummi-Jäger Kg Gmbh & Cie Procédé de fabrication de stators pour pompes à vis excentrique
WO1992020923A1 (fr) * 1991-05-22 1992-11-26 Netzsch-Mohnopumpen Gmbh Carter de pompe a vis excentrique
EP0612922A1 (fr) * 1993-02-22 1994-08-31 Mono Pumps Limited Pompe ou moteur à vis commande par excentrique
GB2417982A (en) * 2004-09-11 2006-03-15 Ming Te Tu Flexible chambered pump

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB799996A (en) * 1955-07-11 1958-08-13 Over Officine Venete Riunite S Improvements in or relating to screw pumps
DE1163148B (de) * 1959-06-11 1964-02-13 Seeberger K G Maschinen & Gera Schneckenpumpe
DE2019254A1 (de) * 1970-04-21 1971-11-04 Eckart & Soehne Josef Exzenter-Schneckenpumpe
FR2175403A5 (fr) * 1972-01-21 1973-10-19 Streicher Foerdertech

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB799996A (en) * 1955-07-11 1958-08-13 Over Officine Venete Riunite S Improvements in or relating to screw pumps
DE1163148B (de) * 1959-06-11 1964-02-13 Seeberger K G Maschinen & Gera Schneckenpumpe
DE2019254A1 (de) * 1970-04-21 1971-11-04 Eckart & Soehne Josef Exzenter-Schneckenpumpe
FR2175403A5 (fr) * 1972-01-21 1973-10-19 Streicher Foerdertech

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0353553A2 (fr) * 1988-07-30 1990-02-07 Gummi-Jäger Kg Gmbh & Cie Procédé de fabrication de stators pour pompes à vis excentrique
EP0353553A3 (fr) * 1988-07-30 1992-02-05 Gummi-Jäger Kg Gmbh & Cie Procédé de fabrication de stators pour pompes à vis excentrique
WO1992020923A1 (fr) * 1991-05-22 1992-11-26 Netzsch-Mohnopumpen Gmbh Carter de pompe a vis excentrique
US5318416A (en) * 1991-05-22 1994-06-07 Netzsch-Mohnopumpen Gmbh Casing of an eccentric worm pump designed to burst at preselected pressure
EP0612922A1 (fr) * 1993-02-22 1994-08-31 Mono Pumps Limited Pompe ou moteur à vis commande par excentrique
AU664507B2 (en) * 1993-02-22 1995-11-16 Mono Pumps Limited Progressive cavity pump or motors
US5474432A (en) * 1993-02-22 1995-12-12 Mono Pumps Limited Progressive cavity pump or motors
GB2417982A (en) * 2004-09-11 2006-03-15 Ming Te Tu Flexible chambered pump

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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Effective date: 19840113

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Effective date: 19860216