FR2292135A1 - Constant flow control on metering pump - having stroke adjustment linked to pressure sensor on damper - Google Patents
Constant flow control on metering pump - having stroke adjustment linked to pressure sensor on damperInfo
- Publication number
- FR2292135A1 FR2292135A1 FR7535617A FR7535617A FR2292135A1 FR 2292135 A1 FR2292135 A1 FR 2292135A1 FR 7535617 A FR7535617 A FR 7535617A FR 7535617 A FR7535617 A FR 7535617A FR 2292135 A1 FR2292135 A1 FR 2292135A1
- Authority
- FR
- France
- Prior art keywords
- pump
- delivery
- stroke
- damper
- adjust
- 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.)
- Withdrawn
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
- F04B43/02—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
- F04B43/06—Pumps having fluid drive
- F04B43/067—Pumps having fluid drive the fluid being actuated directly by a piston
-
- 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
- F04B13/00—Pumps specially modified to deliver fixed or variable measured quantities
-
- 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
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/06—Control using electricity
-
- 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
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/08—Regulating by delivery pressure
-
- 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
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/12—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by varying the length of stroke of the working members
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
Metering pump with method for ensuring a constant volume delivery in unit time independent of the delivery pressure uses a measure of the delivery pressure to adjust the pump delivery volume, increasing it with increased pressure. The pump is a piston pump with adjustable stroke and to adjust the volume, the stroke is adjusted. There is a damper in the pump delivery and a sensor for the delivery pressure on this which produces an electric signal fed to an electronic controller, this being in principle a Wheatstone bridge where the potential from the sensor is measured against a standard. This then adjusts a positioning motor which in turn can adjust either the stroke or the r.p.m. Esp. for metering solvent into chromotograph columns. Piston type metering pumps, including diaphragm tupes, suffer from the defect that the volumetric throughput of the pump declines with increasing delivery to achieve a constant output. The system described provides for adjustment of stroke to overcome this problem.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19742455598 DE2455598A1 (en) | 1974-11-23 | 1974-11-23 | SYSTEM WITH A DISPLACEMENT PUMP, IN PARTICULAR DOSING PUMP, AND A CONTROL DEVICE TO KEEP THE FLOW RATE PER TIME UNIT |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2292135A1 true FR2292135A1 (en) | 1976-06-18 |
Family
ID=5931615
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7535617A Withdrawn FR2292135A1 (en) | 1974-11-23 | 1975-11-21 | Constant flow control on metering pump - having stroke adjustment linked to pressure sensor on damper |
Country Status (3)
Country | Link |
---|---|
JP (1) | JPS5173603A (en) |
DE (1) | DE2455598A1 (en) |
FR (1) | FR2292135A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2388147A1 (en) * | 1977-01-21 | 1978-11-17 | Magnussen Haakon | VOLUMETRIC PUMP AND ITS ELECTRONIC CONTROL CIRCUIT |
FR2428158A2 (en) * | 1978-06-07 | 1980-01-04 | Magnussen Haakon Jun | PUMP FOR LIQUID PHASE CHROMATOGRAPHY |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4204809A (en) * | 1977-12-14 | 1980-05-27 | General Signal Corporation | Wide range control for delivery apparatus |
JPS6234171U (en) * | 1985-08-19 | 1987-02-28 | ||
JPH081175B2 (en) * | 1986-06-02 | 1996-01-10 | 大阪瓦斯株式会社 | Reciprocating pump monitoring device |
JP2713401B2 (en) * | 1987-01-17 | 1998-02-16 | 日本分光株式会社 | Reciprocating pump |
DE3785207T2 (en) * | 1987-09-26 | 1993-07-15 | Hewlett Packard Gmbh | PUMP DEVICE FOR DISPENSING LIQUID AT HIGH PRESSURE. |
ES2117801T3 (en) * | 1993-09-27 | 1998-08-16 | Unilever Nv | PUMPING SYSTEM WITH FLOW METER AND LOAD COMPENSATION AND PROCEDURE FOR THE SAME. |
EP2890278B1 (en) * | 2012-08-16 | 2020-10-14 | Gideon Duvall | Device and system for brewing infused beverages |
-
1974
- 1974-11-23 DE DE19742455598 patent/DE2455598A1/en active Pending
-
1975
- 1975-11-21 FR FR7535617A patent/FR2292135A1/en not_active Withdrawn
- 1975-11-21 JP JP50140129A patent/JPS5173603A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2388147A1 (en) * | 1977-01-21 | 1978-11-17 | Magnussen Haakon | VOLUMETRIC PUMP AND ITS ELECTRONIC CONTROL CIRCUIT |
FR2428158A2 (en) * | 1978-06-07 | 1980-01-04 | Magnussen Haakon Jun | PUMP FOR LIQUID PHASE CHROMATOGRAPHY |
Also Published As
Publication number | Publication date |
---|---|
JPS5173603A (en) | 1976-06-25 |
DE2455598A1 (en) | 1976-05-26 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |