EP0012467B1 - Pumpe - Google Patents
Pumpe Download PDFInfo
- Publication number
- EP0012467B1 EP0012467B1 EP19790200708 EP79200708A EP0012467B1 EP 0012467 B1 EP0012467 B1 EP 0012467B1 EP 19790200708 EP19790200708 EP 19790200708 EP 79200708 A EP79200708 A EP 79200708A EP 0012467 B1 EP0012467 B1 EP 0012467B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- piston
- cylinder
- pump
- inlet
- 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
Images
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
- F04B3/00—Machines or pumps with pistons coacting within one cylinder, e.g. multi-stage
-
- 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
- F04B13/02—Pumps specially modified to deliver fixed or variable measured quantities of two or more fluids at the same time
Definitions
- the present invention relates to a pump, more particularly to a pump intended for metering and mixing a relatively thick fluid, or a suspension of solid particles in a liquid with, for example, another liquid.
- a mixing pump is known from DE-B-1173805 in which a differential piston has three different diameters in three different chambers.
- the displaced volume in the first chamber, into which liquid is drawn, is larger than the displaced volume in the second chamber in which the liquid passes from the first chamber.
- the liquid is therefore forced into a third chamber into which a dispersion or suspension is drawn, and the liquid mixes with the latter.
- the pump according to the present invention comprises a cylinder having a first inlet; a second inlet and an outlet, means for closing communication between the cylinder and the first inlet and between the cylinder and the outlet, and, inside the cylinder, two relatively movable pistons each having at least one port provided with one or more valves.
- communication between the cylinder and either the first inlet or the outlet is closed by a distributor valve, and at least one of the pistons is provided with a non-return valve.
- one piston has a port which is closable by a spring-loaded valve.
- the pump comprises a cylinder 1 in which two pistons 2 and 3 are able to reciprocate.
- Piston 2 is mounted on a piston-rod 4
- piston 3 is mounted on a tube 5 coaxial with the piston-rod 4.
- Piston-rod 4 and tube 5 are actuated independently by means not represented (for example by air cylinders). In another embodiment, they are actuated and synchronised by cams. Adjustable stops limit the stroke of the pistons.
- Piston 2 is provided with a central port which is normally held closed by a valve 6 by means of a spring coaxial with piston-rod 4.
- piston 2 is mounted on piston-rod 4 and the valve 6 is actuated by independent means.
- Piston 3 comprises several ports having non-return valves 7 which enable a liquid to flow only from right to left in the drawing.
- Cylinder 1 comprises two inlets preferably under adequate pressure, a first one 8 for a thick fluid or a suspension and a second one 9 for a liquid.
- the cylinder also comprises an outlet 10 through which the resulting mixture of diluate flows.
- a rotatable distributor valve 11 at the end of the cylinder 1 enables to select alternatively the communication between the cylinder and the first inlet 8 ( Figure 1) or the cylinder and the outlet 10 ( Figure 2).
- This distributor valve is actuated according to the movement of the pistons 2 and 3 by means not represented, as will be explained hereunder.
- the first inlet 8 is provided with a non-return valve which enables fluid to flow into the cylinder, but prevents it from flowing out through the inlet.
- Outlet 10 is provided with a non-return valve which enables the resulting mixture or diluate to flow out of the cylinder but stops suction in.
- Distributor valve 11 is then rotated to provide a communication between cylinder 1 and outlet 10 ( Figure 2) and the pistons move the other way) i.e. from right to left in the drawing).
- the non-return valves 7 close and piston-rod 4 opens valve 6.
- the portion of liquid which was contained between the two pistons passes through piston 2 and mixes with the fluid.
- the passage of the mixture through the outlet 10 is substantially completed and the cycle starts again.
- 12a and 12b may be regarded as two parts of one cylinder 12 at right angles to each other.
- the pump comprises two inlets preferably under adequate pressure, the first, 13, for a thick fluid or a suspension and the second, 14, for a liquid. It also comprises an outlet 16 through which the resulting mixture or diluate flows, a rotatable distributor valve 17 closing a port at the end of the part 12b (left on the drawing), thus providing communication between the cylinder and either the inlet 13 (as shown in Figure 3) or the outlet 16 (as shown in Figure 4).
- This distributor valve is actuated in synchronism with the movements of piston 18 reciprocating in the part 12a of the cylinder and of piston 19 reciprocating in the part 12b of the cylinder.
- the piston 18 is mounted on a piston rod 20 and is actuated by means (not represented) such as for example an air cylinder connected to the piston rod 20.
- the piston 19 is mounted on a piston rod 21 and is normally held at the right end of the part 12b of the cylinder by means of a coil spring coaxial with the piston rod 21. Stops limit the travel of the pistons.
- the piston 18 has several ports provided with non-return valves which only enable a liquid to flow through the piston when the latter is moving upwards.
- the piston 19 has a central port provided with a valve 22 which is normally held closed by a coil spring. This valve 22 is connected to a plate 23 located in a chamber inside the piston; the chamber communicates with the part 12b of the cylinder by ports in the right hand wall of the piston.
- the distributor valve 17 is then turned to the position shown in Figure 4, providing a communication between cylinder 12 and outlet 16.
- the piston 18 moves downwards, its non-return valves close, liquid is drawn into the cylinder through inlet 14 and piston 19 is moved to the left by the liquid between pistons 18 and 19 until it reaches its left stop.
- Pressure of the liquid on the plate 23 then opens the valve 22 ( Figure 4) and the liquid passes through the central port of the piston 19 towards the outlet 16.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
- Accessories For Mixers (AREA)
- Details Of Reciprocating Pumps (AREA)
Claims (6)
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB7848526 | 1978-12-14 | ||
GB4852678 | 1978-12-14 | ||
GB7901504 | 1979-01-16 | ||
GB7901504 | 1979-01-16 | ||
GB7928618 | 1979-08-16 | ||
GB7928618A GB2038929B (en) | 1978-12-14 | 1979-08-16 | Mixing pump |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0012467A1 EP0012467A1 (de) | 1980-06-25 |
EP0012467B1 true EP0012467B1 (de) | 1982-05-12 |
Family
ID=27260643
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19790200708 Expired EP0012467B1 (de) | 1978-12-14 | 1979-12-03 | Pumpe |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0012467B1 (de) |
CA (1) | CA1160101A (de) |
DE (1) | DE2962850D1 (de) |
DK (1) | DK147605C (de) |
ES (1) | ES486844A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2553849C1 (ru) * | 2014-02-10 | 2015-06-20 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Вологодская государственная молочнохозяйственная академия имени Н.В. Верещагина" | Поршневой насос-дозатор |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2089440B (en) * | 1980-12-16 | 1984-08-01 | Nestle Sa | Pump |
DK112386D0 (da) * | 1986-03-11 | 1986-03-11 | On Computer Electronics A S | Indretning samt fremgangsmaade til dosering af vaeskeformigt medie |
DE3867376D1 (de) * | 1987-08-20 | 1992-02-13 | Tecalemit Gmbh Deutsche | Abgabegeraet fuer minaraloelprodukte. |
GB2318836B (en) * | 1993-12-10 | 1998-07-15 | White Consolidated Ind Inc | Viscous material dispenser and method for dispensing |
FI108472B (fi) | 1999-07-29 | 2002-01-31 | Bent Johan Larsen | Íljynsiirtopumppu |
CN103291576B (zh) * | 2013-05-13 | 2016-04-13 | 嘉善海力达工具有限公司 | 套缸式高低压柱塞泵 |
CN104895756B (zh) * | 2015-05-29 | 2017-03-15 | 四川泛水基电液机械有限责任公司 | 一种新型超高压流体泵 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR451277A (fr) * | 1912-08-21 | 1913-04-15 | William Mortimer Melmore | Perfectionnements dans les appareils à comprimer l'air ou les gaz |
DE575142C (de) * | 1926-07-30 | 1933-04-24 | George Dean | Kolbenfluessigkeitsmesspumpe |
US2365234A (en) * | 1940-09-17 | 1944-12-19 | Sullivan Machinery Co | Pump mechanism |
GB651482A (en) * | 1945-07-11 | 1951-04-04 | Humphrey S Railways Inc | Improvements in or relating to reciprocating pumps |
US2497300A (en) * | 1947-01-29 | 1950-02-14 | Du Pont | Floating piston pump |
DE1173805B (de) * | 1959-10-02 | 1964-07-09 | Bran & Luebbe | Tauchkolbendosierpumpe zum Foerdern und Vermischen von zwei Fluessigkeiten |
DE1786127A1 (de) * | 1968-08-21 | 1971-11-25 | Benz & Hilgers Gmbh | Dosiereinrichtung |
US3894405A (en) * | 1973-11-07 | 1975-07-15 | Gustav B Mielitz | Refrigeration unit |
US4093108A (en) * | 1974-07-11 | 1978-06-06 | Carl Schleicher & Schull | Syringe adapted to overcome a pressure resistance |
-
1979
- 1979-11-14 DK DK481979A patent/DK147605C/da not_active IP Right Cessation
- 1979-12-03 DE DE7979200708T patent/DE2962850D1/de not_active Expired
- 1979-12-03 EP EP19790200708 patent/EP0012467B1/de not_active Expired
- 1979-12-13 ES ES486844A patent/ES486844A1/es not_active Expired
- 1979-12-13 CA CA000341856A patent/CA1160101A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2553849C1 (ru) * | 2014-02-10 | 2015-06-20 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Вологодская государственная молочнохозяйственная академия имени Н.В. Верещагина" | Поршневой насос-дозатор |
Also Published As
Publication number | Publication date |
---|---|
DE2962850D1 (en) | 1982-07-01 |
ES486844A1 (es) | 1980-05-16 |
EP0012467A1 (de) | 1980-06-25 |
DK147605B (da) | 1984-10-15 |
CA1160101A (en) | 1984-01-10 |
DK147605C (da) | 1985-04-22 |
DK481979A (da) | 1980-06-15 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CA2211474C (en) | Pressure intensifier for fluids, particularly for hydraulic liquids | |
US4756329A (en) | Devices for the injection of an additive product metered into a main fluid | |
US3937241A (en) | Device for injecting an adjuvant into a liquid | |
DE69308527T2 (de) | Mehrstufige Vakuumpumpe | |
EP0012467B1 (de) | Pumpe | |
GB2044844A (en) | Variable discharge volume pump | |
US4509903A (en) | Catalyst slave pump | |
US5009068A (en) | Pneumatic cylinder with positioning, braking, and feed rate control | |
US3945206A (en) | Control system for hydraulic presses comprising a plurality of press rams | |
US4004602A (en) | Self-metering dual proportioner | |
US2970546A (en) | Fluid pressure systems | |
US4479758A (en) | Piston filler | |
US2748752A (en) | Automatically reversing valves | |
US2424943A (en) | Fuel pump | |
GB2038929A (en) | Mixing Pump | |
US4348160A (en) | Metering syringe | |
EP0161614B1 (de) | Apparat zum Einspritzen abgemessener Flüssigkeitsmengen in den Strom eines flüssigen Mediums | |
KR100192602B1 (ko) | 왕복동 내연기관의 배기밸브제어장치 | |
GB2102501A (en) | Improved method and apparatus for delivering a metered quantity of fuel to an I.C. engine | |
US2131228A (en) | Fuel injection pump | |
US3800665A (en) | Fluid pressure operated reciprocatory motor | |
GB1481521A (en) | Apparatus for sampling first and second liquids and delivering the samples through a common conduit | |
US2127730A (en) | Proportioning motor | |
JPS6339429Y2 (de) | ||
CH265620A (de) | Hydraulischer Regler. |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed | ||
AK | Designated contracting states |
Designated state(s): CH DE FR GB IT SE |
|
ITF | It: translation for a ep patent filed |
Owner name: BERTINI TOZZI S.R.L. |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Designated state(s): CH DE FR IT SE |
|
REF | Corresponds to: |
Ref document number: 2962850 Country of ref document: DE Date of ref document: 19820701 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: SE Payment date: 19940923 Year of fee payment: 16 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 19941007 Year of fee payment: 16 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: CH Payment date: 19941018 Year of fee payment: 16 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 19941228 Year of fee payment: 16 |
|
ITTA | It: last paid annual fee | ||
EAL | Se: european patent in force in sweden |
Ref document number: 79200708.0 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Effective date: 19951204 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: CH Effective date: 19951231 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Effective date: 19960830 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Effective date: 19960903 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |