EP0248653A2 - Abgabe von kurierenden Stoffen - Google Patents

Abgabe von kurierenden Stoffen Download PDF

Info

Publication number
EP0248653A2
EP0248653A2 EP87304915A EP87304915A EP0248653A2 EP 0248653 A2 EP0248653 A2 EP 0248653A2 EP 87304915 A EP87304915 A EP 87304915A EP 87304915 A EP87304915 A EP 87304915A EP 0248653 A2 EP0248653 A2 EP 0248653A2
Authority
EP
European Patent Office
Prior art keywords
flow
delivery line
base material
hardener
rate
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.)
Granted
Application number
EP87304915A
Other languages
English (en)
French (fr)
Other versions
EP0248653B1 (de
EP0248653A3 (en
Inventor
Alexander Milne Bierrum
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.)
Bierrum & Partners Ltd
Original Assignee
Bierrum & Partners Ltd
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 Bierrum & Partners Ltd filed Critical Bierrum & Partners Ltd
Publication of EP0248653A2 publication Critical patent/EP0248653A2/de
Publication of EP0248653A3 publication Critical patent/EP0248653A3/en
Application granted granted Critical
Publication of EP0248653B1 publication Critical patent/EP0248653B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F31/00—Mixers with shaking, oscillating, or vibrating mechanisms
    • B01F31/29—Mixing by periodically deforming flexible tubular members through which the material is flowing

Definitions

  • This invention relates to a method and apparatus for dispensing a curable substance comprising a base material and a hardener therefor.
  • the invention is particularly, thought not exclusively, concerned with the repair of reinforced concrete structures. Fine cracks appearing in reinforced concrete structures need to be sealed off to prevent exposure of the reinforcing bars to the elements causing corrosion of the reinforcing bars. This is done by injecting a curable substance, commonly epoxy resin, into the cracks.
  • a curable substance commonly epoxy resin
  • a method of dispensing a curable substance comprising a base material and a hardener therefor, which method comprises the steps of: providing a flow of base material under pressure at a controllable flow rate from a reservoir thereof, providing a flow of hardener under pressure at a controllable flow rate from a reservoir thereof, combining said flows into a flow of base material/­hardener mix through a delivery line, and applying a peristaltic pumping action to the delivery line along a flexible portion thereof at a rate different from the rate of the flow through the delivery line, in which peristaltic pumping action only partial occlusion of the flexible portion of the delivery line is caused.
  • the invention also provides apparatus for use in dispensing a curable substance comprising a base material and a hardener therefor, which apparatus comprises first means to urge a flow of base material at a controllable flow rate from a reservoir thereof along a first flow path, second means to urge a flow of hardener at a controllable flow rate from a reservoir thereof along a second flow path, means to combine said flows into a flow of base material/hardener mix through a delivery line, and means to apply a peristaltic pumping action to the delivery line along a flexible portion thereof at a rate different from the rate of flow through the delivery line, in which only partial occlusion of the flexible portion of the delivery line occurs.
  • FIGs 1 and 2 there is seen a preferred form of apparatus according to the invention.
  • the apparatus is for use in repairing cracks in reinforced concrete structures, as will be described in more detail.
  • the apparatus is portable to enable its use from an access cradle.
  • the apparatus carries a container 10 for the base material, e.g. epoxy resin, and a container 11 for an appropriate hardener.
  • the pumping device 14 is conveniently a pair of ganged peristaltic pumps 15 and 16 working side by side, both driven by a common motor 17, which is conveniently an electric motor. This enables accurate regulation of the delivery of measurable quantities of both base material and hardener.
  • other pumping arrangements may be used instead, for example, using gear pumps.
  • the conduits 12 and 13 lead to a junction 18, such as a T-piece or a Y-piece, connecting to a delivery line 19, also conveniently of plastics tubing.
  • the delivery line 19 is fed through a device 20 which applies to it a kind of peristaltic pumping action as will be described.
  • the device 20 comprises two arcuate pressure shoes 21 and 22 which are pivotally mounted on pivots 23 and 24.
  • the shoes 21 and 22 extend generally around a rotor 25 on which there are mounted a plurality of ball races 26.
  • the rotor 25 is driven by a motor 27, which is conveniently an electric motor, through a gear box 28.
  • the delivery line 19 is fed into the space between the ball races 26 and the pressure shoes 21 and 22.
  • U-bolts 29 at the free ends 30 of the shoes 21 and 22 hold the delivery line 19 in position.
  • the pressure shoes 21 and 22 are biased pivotally towards each other by spring-loaded adjustors 31 and 32 arranged at the free ends 30 of the shoes 21 and 22. It will be seen that the delivery line 19 is compressed between the pressure shoes 21 and 22 and the ball races 26. The delivery line 19 is contracted by each ball race 26 in turn as the rotor 25 rotates, with an effect like a peristaltic pumping action, ie. the line is subjected to repeated waves of contraction.
  • the separation of the shoes 21 and 22 is adjusted to that only partial occlusion of the delivery line 19 is caused.
  • the device 20 is run so that the waves of contraction to which it subjects the delivery line 19 are applied at a differential rate relative to the flow of the base material/hanrdener mix through the delivery line. That is, the waves of contraction may be applied along the delivery line 19 in the same direction as flow therethrough and at a faster or slower speed, or alternatively, in the opposite direction.
  • the effect is to cause the base material/hardener mix passing through the delivery line to undergo repeated changes of speed and/or direction, thereby encouraging its thorough mixing.
  • the device 20 is run in the same direction as the direction of flow through the delivery line 19 (ie. anti-clockwise in Figure 2) and at a faster rate.
  • An advantage of doing it this way is that it provides an additional effect of boosting the output pressure. A thorough mixing of the base material and hardener is achieved whilst the output from the delivery line is not of an unduly fluctuating nature.
  • the device 20 is run in the same direction and at least twice as fast as the pumps 15 and 16 delivering the flow to the delivery line 19, and typically the difference may be 40 times.
  • a micro-switch 33 is mounted adjacent the free end 30 of one of the pressure shoes 22. As pressure in the delivery line 19 builds up, there is some expansion of the flexible tubing and this causes outward pivoting of the pressure shoes 21 and 22. The micro-switch 33 trips upon outward pivotal movement of the pressure shoe 22. The position of the micro-switch 33 relative to the pressure shoe 22 can be adjusted so that the micro-switch trips when pressure in the delivery line 19 reaches a predetermined level.
  • the micro-switch 33 is connected to control circuitry which switches off both motors 17 and 27 when the micro-switch trips.
  • the apparatus advantageously includes an air heater 34 for keeping the base material in container 10 fluid in low ambient temperatures.
  • an immersion heater element 35 is provided in the conduit 12 leading from the base material container 10 to the pump 15. There is preferably thermostatic control of the heater element 35, and this may be achieved by using the heater element itself as a thermostat.
  • the immersion heater element 35 has the advantage of enabling ready control of the temperature of the base material drawn from the container 10 regardless of ambient temperature and without the need for pre-heating prior to use of the apparatus. This is of significant practical advantage because the wax point of presently available resins which are used as a base material have their wax point at about 10°C and will therefore normally be too viscous.
  • the apparatus also advantageously includes a variable time switching device 36 in its control circuitry.
  • This device 36 can be set to operate cyclically to run the motors 17 and 27 from time to time to purge the system and prevent clogging due to curing of the base material and hardener while it remains in the delivery line 19. Cleaning of the delivery line and conduits at the end of a job can be effected by passing suitable solvents therethrough. If the delivery line 19 becomes badly blocked, however, it can simply be replaced.
  • the apparatus is suitable for use in the treatment of fine cracks in reinforced concrete structures.
  • the technique is to stick a nipple on the face of the structure at either end of the crack and shutter off the face of the crack between the nipples, using for example, plaster.
  • the curable substance is injected through one of the nipples until it begins to ooze out of the other nipple. Injection is ceased and the nipple are capped and left for the substance to set in the crack.
  • a number of injection nipples may be used in line, with each being capped in turn as the crack is treated along its length.
  • a nipple 50 and cap 51 suitable for use with the above described apparatus.
  • the nipple 50 has a flat surface 52 for sticking onto the face of a concrete structure, a spigot 53 for attachment of the delivery line 19 from the apparatus, and a through bore 54.
  • the spigot 53 has an external profile with a tapered portion 55 leading to a shoulder 56.
  • the end of the line is simply push fitted over the spigot 53, after which a holding ring 57 on the outside of the line is brought up to act as a retaining clamp, as seen in Figure 4.
  • the cap 51 is a simple snap-fit over the spigot 53 of the nipple.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Coating Apparatus (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
EP87304915A 1986-06-06 1987-06-03 Abgabe von kurierenden Stoffen Expired - Lifetime EP0248653B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8613779 1986-06-06
GB868613779A GB8613779D0 (en) 1986-06-06 1986-06-06 Dispensing curable substances

Publications (3)

Publication Number Publication Date
EP0248653A2 true EP0248653A2 (de) 1987-12-09
EP0248653A3 EP0248653A3 (en) 1989-04-12
EP0248653B1 EP0248653B1 (de) 1993-05-12

Family

ID=10599046

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87304915A Expired - Lifetime EP0248653B1 (de) 1986-06-06 1987-06-03 Abgabe von kurierenden Stoffen

Country Status (4)

Country Link
EP (1) EP0248653B1 (de)
DE (1) DE3785791T2 (de)
ES (1) ES2040252T3 (de)
GB (1) GB8613779D0 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8550310B2 (en) 2007-12-05 2013-10-08 Bunn-O-Matic Corporation Peristaltic pump
US11692540B2 (en) 2017-11-08 2023-07-04 Oina Vv Ab Peristaltic pump

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH470197A (de) * 1967-03-31 1969-03-31 Instrumentation Labor Inc Vorrichtung zum Mischen von Flüssigkeiten
DE1943573A1 (de) * 1969-08-27 1971-05-06 Bischoff Geb Mormann Mischvorrichtung
DE2025011A1 (en) * 1970-05-22 1971-12-02 Popp B Flexible wall mixing process - for liquid pasty granular materials - using peristaltic motion

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH470197A (de) * 1967-03-31 1969-03-31 Instrumentation Labor Inc Vorrichtung zum Mischen von Flüssigkeiten
DE1943573A1 (de) * 1969-08-27 1971-05-06 Bischoff Geb Mormann Mischvorrichtung
DE2025011A1 (en) * 1970-05-22 1971-12-02 Popp B Flexible wall mixing process - for liquid pasty granular materials - using peristaltic motion

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8550310B2 (en) 2007-12-05 2013-10-08 Bunn-O-Matic Corporation Peristaltic pump
US11692540B2 (en) 2017-11-08 2023-07-04 Oina Vv Ab Peristaltic pump

Also Published As

Publication number Publication date
DE3785791T2 (de) 1993-08-12
GB8613779D0 (en) 1986-07-09
EP0248653B1 (de) 1993-05-12
ES2040252T3 (es) 1993-10-16
DE3785791D1 (de) 1993-06-17
EP0248653A3 (en) 1989-04-12

Similar Documents

Publication Publication Date Title
CN106715065B (zh) 砂浆输送系统
AU2005297473B2 (en) Method for embedding rock anchors
US4595546A (en) Manufacture of elongated extruded cross-linked products
EP0117697B2 (de) Reperaturausrüstung und -verfahren für Windschutzscheiben
US4850425A (en) Apparatus for preparing adhesives for application
US4096973A (en) Portable sealant applicator
EP1051987A3 (de) Automatisch gesteuertes tragbares Instillationsgerät
EP0112638A2 (de) Vorrichtung zum Mischen und Verteilen mehrerer verschiedener Fluide
EP0577890A1 (de) Flüssigkeitabgabevorrichtung mit Dampfrückgewinnung
EP0248653A2 (de) Abgabe von kurierenden Stoffen
EP1232802A3 (de) Vorrichtung und Verfahren zum Auftragen von viskösen Materialien
SE8300941D0 (sv) Anordning for styrning av intravenos administrering av fluid till en patient
JP2016511001A5 (de)
US4877956A (en) Closed feedback injection system for radioactive materials using a high pressure radioactive slurry injector
SE454097B (sv) Sett och anordning for invendig fodring av en passage
HK54881A (en) Method of repairing objects
NO943509L (no) Fremgangsmåte for blanding av materialkomponenter og innretning for utförelse av fremgangsmåten
EP0264670A1 (de) Viskositätsregelung mit Turbinen-Durchflussmesser
IL24431A (en) Apparatus for urinary bladder irrigation
Tee et al. Development of a mechatronic syringe pump to control fluid flow in a microfluidic device based on polyimide film
PL165134B1 (pl) Sposób i urzadzenie do równowazenia cisnienia w przewodach gietkich przy wytlaczaniu materialu, zwlaszcza termoutwardzalnych tworzyw sztucznych PL PL
CN112088024B (zh) 确定患者(手术高度)与流体输送泵间的高度差的方法
US20120085783A1 (en) System for filling liners
TW200302770A (en) Injection machine and method of adjusting viscosity of molten resin
KR20190001917U (ko) 실런트 경화용 가습 장치

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): CH DE ES FR GB IT LI

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

RHK1 Main classification (correction)

Ipc: B01F 11/00

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): CH DE ES FR GB IT LI

17P Request for examination filed

Effective date: 19890331

17Q First examination report despatched

Effective date: 19910129

ITF It: translation for a ep patent filed

Owner name: BARZANO' E ZANARDO ROMA S.P.A.

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): CH DE ES FR GB IT LI

REF Corresponds to:

Ref document number: 3785791

Country of ref document: DE

Date of ref document: 19930617

ET Fr: translation filed
REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2040252

Country of ref document: ES

Kind code of ref document: T3

ITTA It: last paid annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19960315

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19960328

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 19960604

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19960625

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19960628

Year of fee payment: 10

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

Ref country code: GB

Effective date: 19970603

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 EXPIRATION OF PROTECTION

Effective date: 19970604

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: 19970630

Ref country code: CH

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

Effective date: 19970630

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19970603

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: 19980227

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: 19980303

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20000301

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

Effective date: 20050603

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