GB972420A - Screw pump - Google Patents

Screw pump

Info

Publication number
GB972420A
GB972420A GB39130/63A GB3913063A GB972420A GB 972420 A GB972420 A GB 972420A GB 39130/63 A GB39130/63 A GB 39130/63A GB 3913063 A GB3913063 A GB 3913063A GB 972420 A GB972420 A GB 972420A
Authority
GB
United Kingdom
Prior art keywords
stator
rotor
axis
ellipse
pitch
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.)
Expired
Application number
GB39130/63A
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 GB972420A publication Critical patent/GB972420A/en
Expired legal-status Critical Current

Links

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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C3/00—Milling particular work; Special milling operations; Machines therefor
    • B23C3/28—Grooving workpieces
    • B23C3/32—Milling helical grooves, e.g. in making twist-drills
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D1/00—Planing or slotting machines cutting by relative movement of the tool and workpiece in a horizontal straight line only
    • 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
    • F04C2250/00—Geometry
    • F04C2250/20—Geometry of the rotor

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)

Abstract

972,420. Rotary screw pumps. G. R. LINDBERG. Oct. 4, 1963 [April 23, 1963], No. 39130/63. Heading F1F. A rotary screw pump of the Moineau type comprising a casing 26, Fig. 1, having an inlet 30 and outlet 28, houses a stator 12 consisting of a sleeve 16 with an insert 14 of rubber or similar material having a two-start helical thread co-operable with a one-start helical thread of half the pitch formed on a rotor 10. The rotor is connected to a drive shaft 18 by means of an axle 20 which passes through the hollow rotor and universal joints 22, 24 for eccentric and rotational movement within the stator. To reduce manufacturing costs whilst at the same time maintaining contact between the rotor and stator the internal enveloping surface of the stator is generated by an ellipse having a major axis 2a, Fig. 4, and a minor axis 2b which travels along an axis C STAT perpendicular to the plane of the ellipse while simultaneously continuously turning about the axis to produce a helix of pitch S. A complementary rotor with a pitch S/2 is produced and disposed in the stator with its axis C ROF at a distance e equal to a-b/2 from the axis C STAT . The stator is produced by first producing a core i, Fig. 6, whose outer surface is generated by a single helical line of a diameter a+b, which turns whilst simultaneously executing an eccentric movement in a combined longitudinal and circular feed device by allowing the cutting tool to travel along the path r-r a great number of times. The Specification proves mathematically that this surface is identical to that generated by the ellipse. A rubber moulding made round the core is then removed by screwing when the rubber is cured to produce the stator. The rotor may be manufactured by taking a blank 34, Fig. 9, which is mounted in a longitudinal and circular feed device and is machined by a rotating shank end mill 36. The longitudinal feed being S/2 for each rotation of the blank. Alternatively the shank and mill may be replaced by a cutter (not shown).
GB39130/63A 1963-04-23 1963-10-04 Screw pump Expired GB972420A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE442163 1963-04-23

Publications (1)

Publication Number Publication Date
GB972420A true GB972420A (en) 1964-10-14

Family

ID=20264151

Family Applications (1)

Application Number Title Priority Date Filing Date
GB39130/63A Expired GB972420A (en) 1963-04-23 1963-10-04 Screw pump

Country Status (9)

Country Link
US (1) US3208391A (en)
AT (1) AT247155B (en)
BE (1) BE646869A (en)
CH (1) CH412586A (en)
DK (1) DK112423B (en)
ES (1) ES298683A1 (en)
FI (1) FI40440B (en)
GB (1) GB972420A (en)
NL (1) NL6404512A (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3912426A (en) * 1974-01-15 1975-10-14 Smith International Segmented stator for progressive cavity transducer
FR2683001B1 (en) * 1991-10-23 1994-02-04 Andre Leroy AXIAL VOLUMETRIC MACHINE.
ATE318374T1 (en) * 2002-07-17 2006-03-15 Elthom Entpr Ltd ROTATING SCREW MACHINE AND METHOD FOR CONVERTING MOVEMENT IN SUCH MACHINE
DE202009002823U1 (en) 2009-03-02 2009-07-30 Daunheimer, Ralf Cavity Pump
US8083508B2 (en) * 2010-01-15 2011-12-27 Blue Helix, Llc Progressive cavity compressor having check valves on the discharge endplate
DE102013109829B4 (en) * 2013-09-09 2016-10-13 Netzsch Pumpen & Systeme Gmbh Eccentric screw pump for conveying liquid and / or granular media comprising a stator with elastic lining
CN103883522B (en) * 2014-03-17 2016-03-02 北京工业大学 A kind of curved surface forming method of Conic thread rod-lining pair
CN105240269A (en) * 2014-06-26 2016-01-13 水利部科技推广中心 Double-end U-type thread divided spiral micro-nano bubble device
US10001123B2 (en) 2015-05-29 2018-06-19 Sten Kreuger Fluid pressure changing device
US11035364B2 (en) 2015-05-29 2021-06-15 Sten Kreuger Pressure changing device
EP3499038B1 (en) * 2017-12-14 2020-07-08 Services Pétroliers Schlumberger Stator and rotor profile for improved power section performance and reliability
CN108746830A (en) * 2018-06-23 2018-11-06 汪建文 A kind of rotation dynamic formula ring-type shear
CN112867843A (en) 2018-09-11 2021-05-28 勒托力提科技有限公司 Seal in a spiral trochoid rotary machine
US11815094B2 (en) * 2020-03-10 2023-11-14 Rotoliptic Technologies Incorporated Fixed-eccentricity helical trochoidal rotary machines
US11802558B2 (en) 2020-12-30 2023-10-31 Rotoliptic Technologies Incorporated Axial load in helical trochoidal rotary machines

Also Published As

Publication number Publication date
US3208391A (en) 1965-09-28
BE646869A (en) 1964-08-17
CH412586A (en) 1966-04-30
AT247155B (en) 1966-05-25
ES298683A1 (en) 1964-09-01
DK112423B (en) 1968-12-09
NL6404512A (en) 1964-10-26
FI40440B (en) 1968-09-30

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