GB1363967A - Nonpulsating fluid flow pump - Google Patents
Nonpulsating fluid flow pumpInfo
- Publication number
- GB1363967A GB1363967A GB995872A GB995872A GB1363967A GB 1363967 A GB1363967 A GB 1363967A GB 995872 A GB995872 A GB 995872A GB 995872 A GB995872 A GB 995872A GB 1363967 A GB1363967 A GB 1363967A
- Authority
- GB
- United Kingdom
- Prior art keywords
- piston
- cylinder
- valve
- cam
- outlet
- 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
- F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
- F04B9/02—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical
-
- 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
- F04B3/00—Machines or pumps with pistons coacting within one cylinder, e.g. multi-stage
- F04B3/003—Machines or pumps with pistons coacting within one cylinder, e.g. multi-stage with two or more pistons reciprocating one within another, e.g. one piston forning cylinder of the other
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
Abstract
1363967 Reciprocating pumps NAUCHNOISSLEDOVATELSKY INSTITUT NEFTEKHIMICHESKIKH PROIZVODSTV USSR 3 March 1972 9958/72 Heading F1A A pump of adjustable, non-pulsating output, e.g. for delivering small quantities for laboratory use, comprises a series of pistons and cylinders, the first pumping chamber 10, Fig. 2 being connected to an outlet 4 and the second pumping chamber 11 communicating with an inlet 5 during its suction stroke and with the first pumping chamber and outlet during its discharge stroke. As shown, cylinder 6 is fixed, piston 7 and cylinder 8 are moved together by a cam 3, Fig.1, acting through a rocker 17 and rod 21, and piston 9 is moved 180 degrees out of phase with piston 7 and cylinder 8 by cam 3 acting through rocker 18 and rod 22, a pivot 25 being movable to adjust the pump output. Springs 23, 24 bias cam follower rollers 19, 20 onto cam 3. The cam is shaped to produce a discharge stroke slower than the suction stroke. In operation, with piston-cylinder 7, 8 and piston 9 moving upwardly, liquid is discharged from chamber 10 through outlet 4, valves 13 and 15 being closed. When piston 9 starts to move downwardly, with piston-cylinder 7, 8 still moving upwardly, valve 13 remains closed and valve 15 opens to admit liquid into chamber 11 from inlet 5. Finally, piston-cylinder 7, 8 starts to move downwardly and piston 9 moves upwardly, valve 15 closing and valve 13 opening so that liquid continues to be discharged through outlet 4. In Fig.3 (not shown) valves 13, 15 are replaced by a slide valve controlling parts in a housing on cylinder 6, one part communicating with pumping chamber 11 via a flexible pipe. In Fig.4 (not shown) the valves are ball, non-return valves in a housing on cylinder 6. In Fig. 5 (not shown) a change-over valve (31) operated by the piston movement is incorporated in the piston-cylinder 7, 8. In Fig. 6 (not shown) piston-cylinder 7, 8 is replaced by a doublecylinder and cylinder 6 by a fixed piston, piston 9 being formed with a flat on its side wall and being rotatable to function as a valve controlling an inlet port and a passage between the cylinders.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB995872A GB1363967A (en) | 1972-03-03 | 1972-03-03 | Nonpulsating fluid flow pump |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB995872A GB1363967A (en) | 1972-03-03 | 1972-03-03 | Nonpulsating fluid flow pump |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1363967A true GB1363967A (en) | 1974-08-21 |
Family
ID=9881918
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB995872A Expired GB1363967A (en) | 1972-03-03 | 1972-03-03 | Nonpulsating fluid flow pump |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1363967A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5575627A (en) * | 1995-01-12 | 1996-11-19 | Hyvair Corporation | High and low pressure two stage pump and pumping method |
WO2010118740A2 (en) | 2009-04-17 | 2010-10-21 | Fachhochschule Jena | Method and apparatus for the pulsation-free volumetric delivery of fluids and suspensions |
-
1972
- 1972-03-03 GB GB995872A patent/GB1363967A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5575627A (en) * | 1995-01-12 | 1996-11-19 | Hyvair Corporation | High and low pressure two stage pump and pumping method |
WO2010118740A2 (en) | 2009-04-17 | 2010-10-21 | Fachhochschule Jena | Method and apparatus for the pulsation-free volumetric delivery of fluids and suspensions |
DE102009017918A1 (en) | 2009-04-17 | 2010-12-16 | Fachhochschule Jena | Method and device for pulsation-free volumetric delivery of fluids and suspensions |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |