EP0232238B1 - A pump device - Google Patents

A pump device Download PDF

Info

Publication number
EP0232238B1
EP0232238B1 EP87850033A EP87850033A EP0232238B1 EP 0232238 B1 EP0232238 B1 EP 0232238B1 EP 87850033 A EP87850033 A EP 87850033A EP 87850033 A EP87850033 A EP 87850033A EP 0232238 B1 EP0232238 B1 EP 0232238B1
Authority
EP
European Patent Office
Prior art keywords
chamber
hose
pump
pair
inlet
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 - Lifetime
Application number
EP87850033A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0232238A2 (en
EP0232238A3 (en
Inventor
Urban Albinsson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Steridose Systems AB
Original Assignee
Steridose Systems AB
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Steridose Systems AB filed Critical Steridose Systems AB
Priority to AT87850033T priority Critical patent/ATE63616T1/de
Publication of EP0232238A2 publication Critical patent/EP0232238A2/en
Publication of EP0232238A3 publication Critical patent/EP0232238A3/en
Application granted granted Critical
Publication of EP0232238B1 publication Critical patent/EP0232238B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/08—Machines, pumps, or pumping installations having flexible working members having tubular flexible members
    • F04B43/10—Pumps having fluid drive

Definitions

  • the present invention relates to a pump device of the pressurized fluid operated type comprising a pair of chambers divided by a movable partition wall, where one of said chambers forms a dosing chamber and the other a working chamber.
  • the problem behind the invention is to design the pump device such that it allows shifting between the functions dosing chamber and working chamber without major rebuilding of the structure.
  • a further problem is to provide an accurate dosing and discharge operation, at least when operating the pump according to one of said operation modes.
  • Pressurized air pumps having a tube-shaped membrane between a dosing chamber and an working chamber are previously known and are for instance disclosed in SE-B-412939, (GB-A-2003976) and DE-A-3000142.
  • pumps of the present type are of the peristaltic type.
  • a further example of such pumps is shown in US-A No. 3 427 987.
  • US-A-2 626 569 discloses a prior art pump device comparable to the present invention.
  • the known pumps do not allow shifting of operation mode, do not have a basic structure for toolfree assembling and disassembling in sterile systems, do not eliminate product wear due to shearing forces, do not allow in-line sterilization, and do not withstand high pressures and high temperatures. Said shearing forces are a problem with prior art pumps when pumping blood-plasma, in which the delicate blood-plates maybe damaged. Furtheron, the dosing chambers of the known pumps generally cannot be emptied completely.
  • a pump device for a flowable product comprising an elongated housing and at least two pairs of connection pieces arranged on the housing, where each pair forms an inlet and an outlet, respectively, to and from a chamber in said housing, said one pair of inlet and outlet are operatively interconnected via a sub-chamber forming, not pressure resistant, resilient, pipe shaped hose in the chamber, and means are arranged for alternatingly opening and closing the inlet and outlet of each pair of connection pieces.
  • the device is characterized in that perforated, truncated conical hose connection means are arranged at opposite ends of the elongated housing, and that means are arranged for pressurizing the hose either internally or externally in order to pump the product either through the chamber or the hose.
  • the internal surface of the chamber is formed as a pressure resistant surface which resists the strain arising from pressurizing the interior of the tube.
  • said means for pressurizing the tube interior comprises a source for pressurized fluid connectable to the inlet of said pair of connections
  • said means for externally pressurizing the tube comprises a source for pressurized fluid connectable to the inlet of the other pair of connections.
  • connection pieces preferably are accomplished by check valves.
  • the cross section area of the tube preferably is less than the cross section area of the chamber, at least along a certain length of the chamber.
  • An example of a preferred tube material is a highly stretchable latex material.
  • the reference numeral 10 indicates a generally cylindric pump housing where a tube or hose 11 of a stretchable or resilient material is arranged for withstanding high temperatures but which is not pressure resistant, but basically of the type which resiliently reassumes its original shape, for instance a hose of a highly stretchable latex material.
  • the tube or hose 11 is connected such that it forms a partition element inside the chamber 16 of the housing 10 and provides communication between a connection piece 12 and a connection piece 13, provided the tube is not fully compressed.
  • Either one of said connection pieces forms an inlet to or outlet from a chamber 16.
  • 14 is an inlet and 15 an outlet.
  • the inlet and the outlet have been accomplished by means of perforated, truncated cones which are maintained inside the housing 10 by means of clamps 17, 18 which are operable without tools for assembling and disassembling of the pump.
  • Further clamps 19, 20, of the same type as the previous ones, connect pipe pieces to the housing 10 for forming inlet and outlet connection pieces for sterile flow conduits.
  • the perforated, truncated cones 14 and 15 counteract most efficiently any tendency of laminar flow inside the hose 11. Thus, shearing forces are avoided and the product will not suffer seriously from wear due to internal friction. Additionally, when compressing the hose 11, the conical exterior of the pieces 14, 15 forms a support for squeezing the hose completely flat, leaving no rest volume, without seriously stressing the hose.
  • a check valve 21, 22 which for instance nay be such that one is closed and the other one opened when an over pressure acts externally onto the pipe.
  • the dashed line 11a indicates an alternative extension of the hose or pipe 11, implying that the natural dimension of the pipe is somewhat less than the cross section of the pump housing 10. In this manner there is obtained a division of the chamber 16 into two chambers where each one already from the very beginning has a certain nominal volume. Such partial chambers may also be obtained by initially creating an under-pressure in the pipe.
  • the dashed line 23 indicates a chamber design basically of a double conic type.
  • the pipe 11 forms the partition element between two distinct chambers 16a, 16b.
  • the numerals 24, 25 indicate an inlet to or an outlet from the chamber or more precisely the sub-chamber 16a after the hose or pipe 11 has been mounted.
  • the numerals 26, 27 denote check valves basically of the same type as the valves 21, 22 implying that one of the valves is closed while the other is open.
  • the inside of the wall 23 as well as the inside of the cylindric housing form a pressure resistant surface which resists the strain acting on the pipe as a result from the internal over-pressure.
  • a source for pressurized fluid (not shown) is connected to either one of the connection pieces 12, 13.
  • the pressure inside the pipe pushes the hose or pipe against the pressure resistant surface 23, such that the chamber 16a is completely emptied from product.
  • connection piece 24, 25 selected as an inlet while the other connection piece is closed.
  • All check valves 21, 22, 26 and 27 are of the flap type comprising flaps 21a and 22a flexible in one direction only for opening up valve openings in support plates 21b and 22b for establishing communication to the interior of the hose 11. As appears from the figure, the flaps 21a and 22 operate in different directions for providing the proper opening and blocking function at respective ends of the pump housing 10.
  • the pulsating outflow from the pump may be equalized by parallel connecting two or more of pumps of the type described arranged such that there is a certain phase lag.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Eye Examination Apparatus (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
  • Surgical Instruments (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
  • Fluid-Driven Valves (AREA)
  • Seal Device For Vehicle (AREA)
EP87850033A 1986-02-03 1987-02-02 A pump device Expired - Lifetime EP0232238B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87850033T ATE63616T1 (de) 1986-02-03 1987-02-02 Pumpeinrichtung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8600459 1986-02-03
SE8600459A SE8600459L (sv) 1986-02-03 1986-02-03 Pumpanordning

Publications (3)

Publication Number Publication Date
EP0232238A2 EP0232238A2 (en) 1987-08-12
EP0232238A3 EP0232238A3 (en) 1989-02-15
EP0232238B1 true EP0232238B1 (en) 1991-05-15

Family

ID=20363325

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87850033A Expired - Lifetime EP0232238B1 (en) 1986-02-03 1987-02-02 A pump device

Country Status (9)

Country Link
EP (1) EP0232238B1 (ja)
JP (1) JP2801001B2 (ja)
AT (1) ATE63616T1 (ja)
AU (1) AU6798887A (ja)
DE (1) DE3770006D1 (ja)
DK (1) DK168311B1 (ja)
FI (1) FI870408A (ja)
NO (1) NO870350L (ja)
SE (1) SE8600459L (ja)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3926343A1 (de) * 1989-08-09 1991-02-14 Werner Heyberger Membranpumpe, insbesondere fuer den bergbau und grundbau
CN105065237A (zh) * 2015-08-20 2015-11-18 沈阳大学 一种筒式隔膜水力矿浆泵

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2626569A (en) * 1946-10-03 1953-01-27 Elmo M Knudson Lift for deep well hydraulic pumps
US3427987A (en) * 1967-05-15 1969-02-18 Gray Co Inc Tubular diaphragm pump
US4104005A (en) * 1976-01-09 1978-08-01 Thermo Electron Corporation Pneumatic bladder pump having stiffness symmetry
JPS561998Y2 (ja) * 1976-04-23 1981-01-17
IT1117080B (it) * 1977-09-21 1986-02-10 Bosio Roberto Pompa atta a realizzare una circolazione sanguigna artificiale
DE3000142A1 (de) * 1980-01-04 1981-07-09 Werner 7129 Talheim Heyberger Injektionspumpe fuer den bergbau und grundbau

Also Published As

Publication number Publication date
NO870350L (no) 1987-08-04
SE8600459D0 (sv) 1986-02-03
SE8600459L (sv) 1987-08-04
EP0232238A2 (en) 1987-08-12
DE3770006D1 (de) 1991-06-20
DK45087D0 (da) 1987-01-28
JP2801001B2 (ja) 1998-09-21
DK168311B1 (da) 1994-03-07
DK45087A (da) 1987-08-04
EP0232238A3 (en) 1989-02-15
FI870408A0 (fi) 1987-01-30
JPS62191680A (ja) 1987-08-22
ATE63616T1 (de) 1991-06-15
FI870408A (fi) 1987-08-04
NO870350D0 (no) 1987-01-28
AU6798887A (en) 1987-08-06

Similar Documents

Publication Publication Date Title
US4478560A (en) Fluid-operated reciprocating pump
US3062153A (en) Method of and means for pumping various kinds of matter
US4830586A (en) Double acting diaphragm pump
CN101440794B (zh) 波纹管泵及波纹管泵的运行方法
US2673525A (en) Pump
US3250226A (en) Hydraulic actuated pumping system
US2613607A (en) Bellows pump
EP0232238B1 (en) A pump device
US3033218A (en) Fluid proportioner
CN105697341A (zh) 管道隔膜泵
AU740929B2 (en) A valve arrangement
WO2000015962A1 (en) Double-acting pump
US7367785B2 (en) Reduced icing valves and gas-driven motor and reciprocating pump incorporating same
US1256127A (en) Pump.
US20180347553A1 (en) Double-acting pneumatic pump
EP0200510A2 (en) Improvements in or relating to pumps
US3860034A (en) Slide valve
US6234762B1 (en) Reversible venturi-effect pump
US3263617A (en) Method and apparatus for pumping fluid
JPH09126118A (ja) 水圧を利用した液体及び気体移送装置
US5791870A (en) Blower having reversible connecting flange
US437806A (en) Valve
US2151848A (en) Compressor pump, and the like
US171977A (en) Improvement in apparatus for compressing air for operating valves
GB2257481A (en) A diaphragm pump.

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

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH DE ES FR GB GR IT LI LU NL

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH DE ES FR GB GR IT LI LU NL

17P Request for examination filed

Effective date: 19890220

17Q First examination report despatched

Effective date: 19900406

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE ES FR GB GR IT LI LU NL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19910515

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19910515

Ref country code: BE

Effective date: 19910515

Ref country code: AT

Effective date: 19910515

REF Corresponds to:

Ref document number: 63616

Country of ref document: AT

Date of ref document: 19910615

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3770006

Country of ref document: DE

Date of ref document: 19910620

ET Fr: translation filed
ITF It: translation for a ep patent filed

Owner name: MODIANO & ASSOCIATI S.R.L.

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19910826

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19920202

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19920229

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

26N No opposition filed
GBPC Gb: european patent ceased through non-payment of renewal fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20020218

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: 20020219

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: 20020221

Year of fee payment: 16

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030228

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030902

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

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20031031

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050202