GB1246307A - Creation of Inventions and Patents with Artificial Intelligence

GB1246307A – Improvements in or relating to rotary positive displacement pumps
– Google Patents

GB1246307A – Improvements in or relating to rotary positive displacement pumps
– Google Patents
Improvements in or relating to rotary positive displacement pumps

Info

Publication number
GB1246307A

GB1246307A
GB55483/68A
GB5548368A
GB1246307A
GB 1246307 A
GB1246307 A
GB 1246307A
GB 55483/68 A
GB55483/68 A
GB 55483/68A
GB 5548368 A
GB5548368 A
GB 5548368A
GB 1246307 A
GB1246307 A
GB 1246307A
Authority
GB
United Kingdom
Prior art keywords
chamber
passage
pressure
rotary element
housing
Prior art date
1967-11-28
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
GB55483/68A
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.)

Bronzavia SA

Original Assignee
Bronzavia SA
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.)
1967-11-28
Filing date
1968-11-22
Publication date
1971-09-15

1968-11-22
Application filed by Bronzavia SA
filed
Critical
Bronzavia SA

1971-09-15
Publication of GB1246307A
publication
Critical
patent/GB1246307A/en

Status
Expired
legal-status
Critical
Current

Links

Espacenet

Global Dossier

Discuss

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

F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 – F04C14/00

F04C15/0003—Sealing arrangements in rotary-piston machines or pumps

F04C15/0023—Axial sealings for working fluid

F04C15/0026—Elements specially adapted for sealing of the lateral faces of intermeshing-engagement type machines or pumps, e.g. gear machines or pumps

Abstract

1,246,307. Rotary pumps. BRONZAVIA. Nov.22, 1968 [Nov.28, 1967], No.55483/68. Heading F1F. A rotary positive displacement pump comprising a housing having at least one rotary element therein and two side-wall members within the housing, one on either side of the rotary element, with at least one movable axially with respect to the housing and the rotary element, wherein the movable side-wall member is subjected at least on part of its face adjacent the rotary element to a pressure close to delivery pressure and wherein means are provided to apply to at least part of the other face of the movable side-wall a regulated back-pressure whose magnitude determines the lateral clearance between the rotary element and the side-wall members. As described, the invention is applied to a gear pump having a pair of inter-meshing gears 30, Figs.1, 2 rotatably mounted in a two-port housing 1a, 1b with each disposed between a fixed side-wall member 24 and an axially-movable side-wall member 6 mounted in stepped bores 5, 4 in the housing parts. Each side-wall member 6 is stepped and with the bore 4 and a fixedly located ring member 7 defines annular chambers C 1 , C 2 , C 3 , communicating with the pumping chamber midway between the inlet 2 and outlet 3. The chamber C 1 through a passage 19, the chamber C 2 through a passage 16 and an arcuate recess 14 and the chamber C 3 through a passage 17 and the arcuate recess 14. The chamber C 2 also communicates with the passage 17 through a restricted passage 18 and the chamber C 3 with a chamber 12 connected to the pump inlet by a jet passage 11 the size of which determines the pressure in the chambers C 2 , C 3 and hence the clearance between the side-wall member 6 and the side face of the gear 30 which is sufficient to preclude excessive leakage without excessive friction. Arcuate recesses 13, 15 on either side of the recess 14 enables a pressure of constant magnitude to be maintained. The recesses 13, 14, 15 are matched by corresponding recesses 25, 26, 27 in the sidewall member 24 and inter-connected by balancing passages 31, 32 through the gears and spaces between the gear teeth. The passages 32 are connected by radial passages 33 to the roots of the gear teeth. In a modification, the jet passage 11 is replaced by a perforated spring-loaded washer located at that end of the chamber C 3 remote from the gear 30 which co-operates with an adjustable screw-threaded plug having a central bore through which leakage occurs to again determine the pressure in the chambers C 2 , C 3 .

GB55483/68A
1967-11-28
1968-11-22
Improvements in or relating to rotary positive displacement pumps

Expired

GB1246307A
(en)

Applications Claiming Priority (1)

Application Number
Priority Date
Filing Date
Title

FR129912

1967-11-28

Publications (1)

Publication Number
Publication Date

GB1246307A
true

GB1246307A
(en)

1971-09-15

Family
ID=8642362
Family Applications (1)

Application Number
Title
Priority Date
Filing Date

GB55483/68A
Expired

GB1246307A
(en)

1967-11-28
1968-11-22
Improvements in or relating to rotary positive displacement pumps

Country Status (4)

Country
Link

US
(1)

US3558247A
(en)

DE
(1)

DE1810868A1
(en)

FR
(1)

FR1553040A
(en)

GB
(1)

GB1246307A
(en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party

Publication number
Priority date
Publication date
Assignee
Title

GB1362797A
(en)

1970-11-28
1974-08-07
Lucas Industries Ltd
Bearings for gear pumps

US4231726A
(en)

1978-06-22
1980-11-04
Caterpillar Tractor Co.
Gear pump having fluid deaeration capability

DE2846547A1
(en)

1978-10-26
1980-04-30
Pierburg Luftfahrtgeraete

SELF-SEALING GEAR PUMP

US4358258A
(en)

1979-07-06
1982-11-09
Fluid Energy Systems Corporation
High pressure gear pump or motor with axial retaining means and radial balancing means

US4370110A
(en)

1979-07-06
1983-01-25
Fluid Energy Systems Corporation
High pressure gear pump or motor with axial retaining means in a housing cavity

EP0169307A3
(en)

1984-05-18
1987-01-07
Nordson Corporation
Hot melt adhesive pump with ported gears

US20230175503A1
(en)

2021-12-03
2023-06-08
Hamilton Sundstrand Corporation
Spring retainer for gear pump bearing plate

1967

1967-11-28
FR
FR129912A
patent/FR1553040A/fr
not_active
Expired

1968

1968-11-22
GB
GB55483/68A
patent/GB1246307A/en
not_active
Expired

1968-11-22
US
US778114A
patent/US3558247A/en
not_active
Expired – Lifetime

1968-11-26
DE
DE19681810868
patent/DE1810868A1/en
active
Pending

Also Published As

Publication number
Publication date

FR1553040A
(en)

1969-01-10

US3558247A
(en)

1971-01-26

DE1810868A1
(en)

1969-08-21

Contact information