WO2004105926A1 - Appareil de dosage - Google Patents

Appareil de dosage Download PDF

Info

Publication number
WO2004105926A1
WO2004105926A1 PCT/IT2003/000341 IT0300341W WO2004105926A1 WO 2004105926 A1 WO2004105926 A1 WO 2004105926A1 IT 0300341 W IT0300341 W IT 0300341W WO 2004105926 A1 WO2004105926 A1 WO 2004105926A1
Authority
WO
WIPO (PCT)
Prior art keywords
pump
plunger
plate
hole
distal end
Prior art date
Application number
PCT/IT2003/000341
Other languages
English (en)
Inventor
Ivo Tozzi
Lorenzo Montanti
Original Assignee
Demak S.R.L.
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 Demak S.R.L. filed Critical Demak S.R.L.
Priority to PCT/IT2003/000341 priority Critical patent/WO2004105926A1/fr
Priority to AU2003238689A priority patent/AU2003238689A1/en
Publication of WO2004105926A1 publication Critical patent/WO2004105926A1/fr

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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F33/00—Other mixers; Mixing plants; Combinations of mixers
    • B01F33/80—Mixing plants; Combinations of mixers
    • B01F33/84—Mixing plants with mixing receptacles receiving material dispensed from several component receptacles, e.g. paint tins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/80—Forming a predetermined ratio of the substances to be mixed
    • B01F35/88—Forming a predetermined ratio of the substances to be mixed by feeding the materials batchwise
    • B01F35/882—Forming a predetermined ratio of the substances to be mixed by feeding the materials batchwise using measuring chambers, e.g. volumetric pumps, for feeding the substances
    • B01F35/8822—Forming a predetermined ratio of the substances to be mixed by feeding the materials batchwise using measuring chambers, e.g. volumetric pumps, for feeding the substances using measuring chambers of the piston or plunger type
    • 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
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/14—Pistons, piston-rods or piston-rod connections
    • F04B53/144—Adaptation of piston-rods
    • F04B53/147—Mounting or detaching of piston rod
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F11/00—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it
    • G01F11/02—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers which expand or contract during measurement
    • G01F11/021—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers which expand or contract during measurement of the piston type

Definitions

  • the present invention relates to apparatus for metering at least two different fluid components for use, for example, in the production of two-component resin compounds from main base components and additive components.
  • the object of the present invention is to provide a more versatile metering apparatus than those of the prior art and which, in particular, makes it possible to change the components to be metered following a quick and simple reconfiguration operation.
  • Figure 1 is a schematic front elevation view of apparatus according to the invention
  • Figure 2 is a plan view of the apparatus of Figure 1;
  • FIG 3 is a perspective view of a detail of the apparatus of the invention of Figure 1,
  • FIG 4 is a perspective view of another detail of the apparatus of the invention of Figure 1, and
  • Figure 5 is a section view taken on the line V-V of Figure 3.
  • Apparatus for metering a plurality of different fluid components includes (see Figures 1 and 2) a fixed frame 10 and a plurality of plunger pumps 12, each of which is operable to deliver a metered quantity of a single component.
  • the frame 10 includes a fixed lower plate 14 and a fixed upper plate 16 which is substantially rectangular and four columns 18 which interconnect respective facing corner portions of the plates 14, 16.
  • each pump 12 includes a body 20 with the plunger 22 of the pump protruding therefrom and associated intake and delivery pipes .
  • Each pump 12 is housed in a respective seat 24 formed in the upper plate 16 of the frame 10 and having (Fig. 4) a removable wall 26 for enabling the body 20 of the pump 12 to be fitted and removed.
  • This removable side 26 has end holes 28 through which a respective screw 30 can pass in order to fix the remaining parts of the seat 24.
  • Each plunger 22 (see Figures 3 and 5) has a portion 32 at its distal end with a circular section greater than the circular section of the proximal portion 34. In addition it has an intermediate portion 36 with an intermediate section, between that of the distal portion 32 and the proximal portion 34 and having two flat facetings 38 formed in diametrically opposite positions.
  • the distal end portion 32 of each plunger 22 includes a separate cylindrical element 40, with a through- hole 42 at the site of its longitudinal axis for the passage of a screw 44 which engages a threaded hole 46 formed in the remaining portion 48 of the distal end portion 32, which is formed in one piece with the intermediate portion 36 and the proximal portion 34.
  • the apparatus also includes (see Figure 1) a movable plate 50 which is substantially rectangular and has at each corner portion an associated bush 52 mounted on a respective upright 18.
  • An actuator assembly 54 is associated with the plate 50 in order to transmit to it a reciprocating movement along a path parallel to the axis of the columns 18.
  • the movable plate 50 also has means (see Figures 3 and 5) for enabling it to be connected selectively to the distal end of each plunger 22.
  • these selective connection means include a locking member 56 fixed to the face of the plate facing the body 20 of the pump 12 about a through-hole 58 formed through the plate 50 and having dimensions corresponding to those of the distal end portion 32 of the plunger 22.
  • each locking member 56 has a cavity 60 opening outwardly, extending for the entire height of the member 56 and having a first, lower portion 62 the width of which corresponds to the diameter of the hole 58 through the plate 50 and a second, upper portion 64, the width of which is between the length of the diameter of the proximal portion 34 and that of the diameter of the distal end portion 32 of the plunger 22.
  • Each locking member 56 also has a plurality of through-holes 66, through each of which a respective screw 68 can pass in order to engage a threaded hole 70 formed in the surface of the plate 50 facing the bodies 20 of the pumps 12.
  • the means for selectively connecting the distal end of each plunger 22 to the plate 50 each also include a member for selectively closing the respective through-hole 58.
  • This member is constituted by a rod 72 with through holes 74 at each end for a respective screw 76 to pass through and engage a threaded hole 78 formed in the surface of the plate 50 facing away from the bodies 20 of the pumps 12.
  • each pump 12 delivers a measured quantity of one of the components of the compound which is being produced.
  • these components would typically include two base components which are always the same - that is polyol and iso-cyanate - along with additive components, such as colourings and perfumes, for example, which vary from one specific resin to another.
  • each pump 12 is allotted to delivering one of either the basic components or the additives, taking care to activate only those pumps 12 which are delivering either a basic component or an additive which is specifically necessary for the compound which is being manufactured in that instance .
  • the rods 72 associated with the plungers 22 of the pumps 12 containing additives which are not required for the compound being manufactured are arranged, on the other hand, so they do not block their respective through-hole 58. This position is achieved by completely unscrewing one of the screws 76 and rotating the rod 72 relative to the other screw 76. The plunger 22 is thereby released from the plate 50 and remains stationary during reciprocating motion of this latter, thereby not transmitting any movement to the pump 12 (see pump on the left in Figure 3) .
  • each pump 12 is therefore selectively releasable from the frame 10 and from the movable plate 50, thereby constituting a modular unit which is interchangeable with another pump 12 ready to deliver a different component.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Reciprocating Pumps (AREA)

Abstract

L'invention concerne un appareil permettant de délivrer des quantités dosées de deux différentes composantes fluides. Cet appareil comprend un cadre support fixe (10), une pompe à piston (12) destinée à la délivrance dosée de chaque composante, chaque pompe (12) ayant un corps (20) monté sur un cadre support (10) et la tige de piston (22) faisant saillie ; une plaque (50) dotée d'un l'élément actionneur (54) fonctionne pour communiquer un mouvement de va-et-vient ; et un moyen permet à la plaque (50) mobile d'être connectée sélectivement à l'extrémité distale de chaque piston (22), de telle manière que l'on puisse choisir les pompes (12) à faire fonctionner. Il est préférable que chaque pompe (12) puisse être sélectivement libérée du cadre (10) et de la plaque (50) mobile, ce qui permet d'obtenir une unité modulaire qui est interchangeable avec une autre pompe (12).
PCT/IT2003/000341 2003-05-30 2003-05-30 Appareil de dosage WO2004105926A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/IT2003/000341 WO2004105926A1 (fr) 2003-05-30 2003-05-30 Appareil de dosage
AU2003238689A AU2003238689A1 (en) 2003-05-30 2003-05-30 Metering apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IT2003/000341 WO2004105926A1 (fr) 2003-05-30 2003-05-30 Appareil de dosage

Publications (1)

Publication Number Publication Date
WO2004105926A1 true WO2004105926A1 (fr) 2004-12-09

Family

ID=33485486

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IT2003/000341 WO2004105926A1 (fr) 2003-05-30 2003-05-30 Appareil de dosage

Country Status (2)

Country Link
AU (1) AU2003238689A1 (fr)
WO (1) WO2004105926A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007039378A1 (fr) 2005-10-05 2007-04-12 Kraussmaffei Technologies Gmbh Dispositif de dosage d'additifs conçu pour une installation de polyurethanne

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4693397A (en) * 1983-07-29 1987-09-15 Ludwig Schwerdtel Gmbh Dosing devices for viscous materials particularly highly viscous materials
US5305917A (en) * 1992-11-19 1994-04-26 Fluid Management Limited Partnership Simultaneous dispensing apparatus
US5407100A (en) * 1994-01-07 1995-04-18 Fluid Management Limited Partnership Dispensing apparatus with a moveable plate

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4693397A (en) * 1983-07-29 1987-09-15 Ludwig Schwerdtel Gmbh Dosing devices for viscous materials particularly highly viscous materials
US5305917A (en) * 1992-11-19 1994-04-26 Fluid Management Limited Partnership Simultaneous dispensing apparatus
US5407100A (en) * 1994-01-07 1995-04-18 Fluid Management Limited Partnership Dispensing apparatus with a moveable plate

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007039378A1 (fr) 2005-10-05 2007-04-12 Kraussmaffei Technologies Gmbh Dispositif de dosage d'additifs conçu pour une installation de polyurethanne

Also Published As

Publication number Publication date
AU2003238689A1 (en) 2005-01-21

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