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1. WO2019204497 - DEVICE FOR PROTECTING A DIAPHRAGM PUMP FROM PRESSURE DIFFERENTIAL

Publication Number WO/2019/204497
Publication Date 24.10.2019
International Application No. PCT/US2019/027944
International Filing Date 17.04.2019
IPC
F04B 43/00 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
43Machines, pumps, or pumping installations having flexible working members
F04B 43/067 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
43Machines, pumps, or pumping installations having flexible working members
02having plate-like flexible members, e.g. diaphragms
06Pumps having fluid drive
067the fluid being actuated directly by a piston
F04B 45/033 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
45Pumps or pumping installations having flexible working members and specially adapted for elastic fluids
02having bellows
033having fluid drive
CPC
F04B 2205/064
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
2205Fluid parameters
06Pressure in a (hydraulic) circuit
064in a reservoir linked to the pump inlet
F04B 43/0063
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
43Machines, pumps, or pumping installations having flexible working members
0009Special features
0054particularities of the flexible members
0063bell-shaped flexible members
F04B 43/0081
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
43Machines, pumps, or pumping installations having flexible working members
0009Special features
0081systems, control, safety measures
F04B 43/067
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
43Machines, pumps, or pumping installations having flexible working members
02having plate-like flexible members, e.g. diaphragms
06Pumps having fluid drive
067the fluid being actuated directly by a piston
F04B 45/0333
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
45Pumps or pumping installations having flexible working members and specially adapted for elastic fluids
02having bellows
033having fluid drive
0333the fluid being actuated directly by a piston
F04B 53/00
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
53Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
Applicants
  • WANNER ENGINEERING, INC. [US]/[US]
Inventors
  • MEINZ, Peter
  • FEATHERSTONE, Dustin
  • HOLLISTER, Matthew
Agents
  • BRUESS, Steven, C.
  • SEBALD, Gregory, A.
  • SMITH, Ryan, C.
Priority Data
62/659,55018.04.2018US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) DEVICE FOR PROTECTING A DIAPHRAGM PUMP FROM PRESSURE DIFFERENTIAL
(FR) DISPOSITIF DE PROTECTION DE POMPE À DIAPHRAGME CONTRE LES DIFFÉRENCES DE PRESSION
Abstract
(EN)
A diaphragm pump includes a transfer chamber containing hydraulic fluid and a pumping chamber for fluid to be pumped. A connecting assembly includes a plunger extending to the transfer chamber. A diaphragm connects to the connecting assembly and separates the transfer chamber and the pumping chamber. A pressure protection device mounts to the connecting assembly and is configured to seal against the transfer chamber when pressure differential, including reverse pressure differential, across the diaphragm exceeds a predetermined value. The pressure protection device is intermediate the plunger and the diaphragm and supports the diaphragm when there is excess pressure differential across the diaphragm.
(FR)
L'invention concerne une pompe à diaphragme comprenant une chambre de transfert contenant du fluide hydraulique et une chambre de pompage pour un fluide à pomper. Un ensemble de liaison comprend un plongeur s'étendant à la chambre de transfert. Un diaphragme est relié à l'ensemble de liaison et sépare la chambre de transfert de la chambre de pompage. Un dispositif de protection contre la pression est monté au niveau de l'ensemble de liaison et conçu pour obtenir une étanchéité de la chambre de transfert lorsqu'une différence de pression, y compris une différence de pression inverse, à travers le diaphragme dépasse une valeur préfinie. Le dispositif de protection contre la pression est intermédiaire entre le plongeur et le diaphragme et porte le diaphragme lorsqu'il y a un excès de différence de pression à travers le diaphragme.
Also published as
EA202092462
EP2019722366
KR1020207033142
MXMX/a/2020/010986
UAa202007222
Latest bibliographic data on file with the International Bureau