GB1418993A - Diaphragm pump particularly for the generation of vacuum - Google Patents
Diaphragm pump particularly for the generation of vacuumInfo
- Publication number
- GB1418993A GB1418993A GB779473A GB779473A GB1418993A GB 1418993 A GB1418993 A GB 1418993A GB 779473 A GB779473 A GB 779473A GB 779473 A GB779473 A GB 779473A GB 1418993 A GB1418993 A GB 1418993A
- Authority
- GB
- United Kingdom
- Prior art keywords
- diaphragm
- convex
- central portion
- curvature
- connecting rod
- 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
Links
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
- F04B43/0009—Special features
- F04B43/0054—Special features particularities of the flexible members
-
- 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
- F04B45/00—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids
- F04B45/04—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids having plate-like flexible members, e.g. diaphragms
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
Abstract
1418993 Diaphragm pumps for vacuum production E BECKER 16 Feb 1973 [8 March 1972] 7794/73 Heading F1N A diaphragm pump for vacuum production comprises a diaphragm 2 having a thickened relatively inflexible spherically convex control portion 8, a housing surface 4 facing the diaphragm and having a spherically concave control portion with a radius of curvature the same or slightly exceeding the curvature R2 of the convex portion 8, and a connecting rod 3 secured to the diaphragm and arranged cyclically to move the diaphragm to a position in which it makes substantially overall surface contact with the inner surface 4. The connecting rod 3 is oscillated by a crank drive and is secured to the central portion of the dia- phragm 2 by a metal member 26 vulcanized to a hub-shaped projection 9 of the diaphragm. The pivot axis of the connecting rod 3 is also the centre of curvature of the spherically convex central portion 8. To assist in preventing the diaphragm from bowing away from the surface 4, the crank-case K may be maintained at a pressure above atmospheric. Thus the crank-case K may be connected to an external source or be provided with a suction valve 12 and a valve 13 which allows the discharge of air when the pressure in the crankcase exceeds a certain value. The central portion of the surface 4 is either surrounded by a conical outer portion or, on the side of the surface 4 adjacent a delivery port 11, the conical surface is replaced by a convex surface (4'). A stiffening member (23) may be disposed within the central portion 8. The central diaphragm portion 8 may be harder than the surrounding annular portion 21. Two or more pumps as described above may be combined, Fig.6 (not shown) to form a two or multi-stage pump.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19722211096 DE2211096C3 (en) | 1972-03-08 | Diaphragm pump for vacuum generation |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1418993A true GB1418993A (en) | 1975-12-24 |
Family
ID=5838265
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB779473A Expired GB1418993A (en) | 1972-03-08 | 1973-02-16 | Diaphragm pump particularly for the generation of vacuum |
Country Status (3)
Country | Link |
---|---|
FR (1) | FR2175507A5 (en) |
GB (1) | GB1418993A (en) |
IT (1) | IT981203B (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001014744A1 (en) * | 1999-08-26 | 2001-03-01 | Knf Neuberger Gmbh | Membrane pump |
GB2395237A (en) * | 2002-11-13 | 2004-05-19 | Z & D Ltd | Compressor head |
US20210355929A1 (en) * | 2020-05-18 | 2021-11-18 | Graco Minnesota Inc. | Pump having multi-stage gas compression |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4007932A1 (en) * | 1990-03-13 | 1991-09-19 | Knf Neuberger Gmbh | Long service life diaphragm pump |
EP0626516B1 (en) * | 1993-04-15 | 1997-06-04 | KNF Neuberger GmbH | Lubricant-free vacuum pump arrangement |
DE102006046567B3 (en) * | 2006-08-30 | 2008-03-06 | Knf Neuberger Gmbh | Diaphragm pump has two diaphragms which are moved relative to each other in axial direction at same value as piston rods at places turned away from each other |
-
1973
- 1973-02-16 GB GB779473A patent/GB1418993A/en not_active Expired
- 1973-03-08 IT IT21313/73A patent/IT981203B/en active
- 1973-03-08 FR FR7308402A patent/FR2175507A5/fr not_active Expired
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001014744A1 (en) * | 1999-08-26 | 2001-03-01 | Knf Neuberger Gmbh | Membrane pump |
US6796215B1 (en) | 1999-08-26 | 2004-09-28 | Knf Neuberger Gmbh | Membrane pump |
GB2395237A (en) * | 2002-11-13 | 2004-05-19 | Z & D Ltd | Compressor head |
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 |
---|---|
DE2211096B2 (en) | 1976-05-26 |
FR2175507A5 (en) | 1973-10-19 |
DE2211096A1 (en) | 1973-09-13 |
IT981203B (en) | 1974-10-10 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |