EP0743876B1 - Vorrichtung zum mischen einer ersten flüssigkeit in eine zweite flüssigkeit - Google Patents

Vorrichtung zum mischen einer ersten flüssigkeit in eine zweite flüssigkeit Download PDF

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Publication number
EP0743876B1
EP0743876B1 EP95910027A EP95910027A EP0743876B1 EP 0743876 B1 EP0743876 B1 EP 0743876B1 EP 95910027 A EP95910027 A EP 95910027A EP 95910027 A EP95910027 A EP 95910027A EP 0743876 B1 EP0743876 B1 EP 0743876B1
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EP
European Patent Office
Prior art keywords
restrictor member
flow
fluid
flow restrictor
gaps
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
EP95910027A
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English (en)
French (fr)
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EP0743876A1 (de
Inventor
Rolf Ekholm
Ulf Jansson
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.)
Metso Fiber Karlstad AB
Original Assignee
Kvaerner Pulping AB
Kvaerner Pulping Technologies 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
Priority claimed from SE9400387A external-priority patent/SE502393C2/sv
Priority claimed from SE9403010A external-priority patent/SE9403010D0/xx
Application filed by Kvaerner Pulping AB, Kvaerner Pulping Technologies AB filed Critical Kvaerner Pulping AB
Publication of EP0743876A1 publication Critical patent/EP0743876A1/de
Application granted granted Critical
Publication of EP0743876B1 publication Critical patent/EP0743876B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B01F35/71—Feed mechanisms
    • B01F35/712—Feed mechanisms for feeding fluids
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
    • D21C9/10—Bleaching ; Apparatus therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/40—Static mixers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/30—Injector mixers
    • B01F25/31—Injector mixers in conduits or tubes through which the main component flows
    • B01F25/314—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced at the circumference of the conduit
    • B01F25/3141—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced at the circumference of the conduit with additional mixing means other than injector mixers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/40—Static mixers
    • B01F25/44—Mixers in which the components are pressed through slits
    • B01F25/441—Mixers in which the components are pressed through slits characterised by the configuration of the surfaces forming the slits
    • B01F25/4412—Mixers in which the components are pressed through slits characterised by the configuration of the surfaces forming the slits the slits being formed between opposed planar surfaces, e.g. pushed again each other by springs
    • 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
    • B01F35/71—Feed mechanisms
    • 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
    • B01F35/71—Feed mechanisms
    • B01F35/711—Feed mechanisms for feeding a mixture of components, i.e. solids in liquid, solids in a gas stream
    • 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
    • B01F35/71—Feed mechanisms
    • B01F35/717—Feed mechanisms characterised by the means for feeding the components to the mixer
    • B01F35/71805—Feed mechanisms characterised by the means for feeding the components to the mixer using valves, gates, orifices or openings
    • 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
    • B01F35/75—Discharge mechanisms
    • B01F35/754—Discharge mechanisms characterised by the means for discharging the components from the mixer
    • B01F35/7547—Discharge mechanisms characterised by the means for discharging the components from the mixer using valves, gates, orifices or openings
    • B01F35/75471—Discharge mechanisms characterised by the means for discharging the components from the mixer using valves, gates, orifices or openings being adjustable

Definitions

  • the present invention relates to an apparatus for mixing a first fluid into a second fluid, which apparatus comprises:
  • the steam should be added such that local surpluses do not occur during passage through the mixer.
  • the degradation or so-called fluidization must take place in such a way that local pressure variations are minimized.
  • Any implosions which occur because of steam bubbles should take place in a section in which the components or the construction material cannot suffer damage resulting from the cavitation-like phenomena.
  • the mixer should have some form of in-built elasticity to enable it to absorb pressure and shocks caused by possible momentary disturbances in the steam and pulp flows up to and through the mixer.
  • the Swedish Patent No. 468 341 describes an apparatus for mixing a suspension of a cellulose-containing fibre material and a fluid such as, for example, gases in the form of ozone, oxygen and chlorine and liquids containing various active substances, e.g. chlorine dioxide.
  • this mixer comprises a funnel-shaped part and, in this, a conical moving part. Between the funnel-shaped part and the conical part there is formed an adjustable gap through which the pulp passes. In the walls of the funnel-shaped part there are located a number of openings for the fluid which is to be mixed into the passing pulp.
  • mixer devices having a rotary part for mixing fluid into the pulp.
  • a problem in these devices is that the rotation gives rise to large pressure variations, which create local zones of very low pressure to which the steam makes its way, resulting in implosions as described above.
  • a further problem is to distribute the steam evenly in the pulp suspension, especially when large quantities of steam are to be supplied, as a result of which capacity problems can also arise.
  • the object of the present invention is to remedy the said problems.
  • a blending or mixer apparatus which does not have any rotary parts, which does not presuppose that the said second fluid, which can consist, for example, of a pulp suspension, does not require that the flow alters its principal flow direction, thereby making the apparatus suitable for installation in existing pipe systems, which is compact in its construction and which does not require a stand or base for its mounting.
  • the apparatus A comprises, according to the embodiment, a main body 1 - hereinafter referred to as the housing - which in turn exhibits a tubular or sleeve-shaped outer wall 36, a first, plane end wall 37, a second end wall 38, which can also be plane but which, according to the embodiment, is inwardly conical, and between the said first and second end walls a continuous elongated opening 39 - hereinafter referred to as the flow chamber - which is limited to the sides by a pair of plane chamber walls 5, 10.
  • the shape of the flow chamber 39 will be described in greater detail below.
  • the flow chamber 39 divides the first, plane end wall into two circular-segment-shaped portions 37a and 37b and the second end wall 38 is also correspondingly divided into two portions 38a and 38b, which can be described as conical segments or plane, circular segments in the event of the end wall 38 being plane.
  • a first outer space 40a Between the outer wall 36 and the walls 5, 37a and 38a there is formed a first outer space 40a and at the other side of the housing 1 there is correspondingly formed a second outer space 40b.
  • supply lines 41a, 41b for the fluid which has been referred to above as the first fluid and which is to be mixed into the said second fluid.
  • the said first fluid is intended to consist of steam, but can also, in other applications of the apparatus, consist of other gaseous fluids, e.g. oxygen, ozone, chlorine dioxide and/or by a liquid.
  • the apparatus A is fastened, by means of the housing 1, between two pipelines 32, 33, which, according to the embodiment, have the same diameter as the outer wall 36 of the housing 1. A different diameter is also, however, conceivable.
  • the fastening can be realized in a conventional manner by a flange joint.
  • a pair of flanges on the housing 1 are denoted by 34, 35.
  • the apparatus A having the housing 1 is herein facing such that the said second fluid flows from the line 32 up through the flow chamber 39 and onward up through the pipeline 33, the housing 1 facing with the plane, first end wall 37 towards the incoming pipeline 32 for the said second fluid and with the inwardly conical, second end wall 38 facing towards the outgoing line 33.
  • the outer wall of the housing 1 is breached, thereby forming lateral openings 43 and 44.
  • the flow chamber 39 communicates with a pair of first and second cylinder spaces 45 and 46 respectively, disposed outside the housing 1.
  • the associated first and second cylinders 27 and 28 are welded to the outer wall 36 of the housing 1.
  • the said first piston 25 is further connected by a piston rod 23 to a hydraulic piston 21 in a hydraulic cylinder 20.
  • a pair of supply lines for hydraulic oil have been denoted by 20a, 20b.
  • pneumatic operation can also be envisaged.
  • the cylinder 20 consists in this case of a pneumatic cylinder and the lines 20a, 20b are air lines.
  • a flow restrictor member 6 which extends from the first cylinder space 45, through the first lateral opening 43, onward through the whole of the chamber 39 and, via the second lateral opening 44, into the second cylinder space 46.
  • the flow restrictor member 6 constitutes a restrictor member in the flow chamber 6, it also constitutes a connecting element between the two pistons 25 and 26, which are connected up to both ends of the flow restrictor member 6.
  • the appearance of the integrated member, which consists of the flow restrictor member 6, the said first and second pistons 25, 26, the piston rod 23 and the hydraulic or pneumatic piston 21, is shown in Fig. 4.
  • the longitudinal axis of the flow restrictor member 6, also the centre axis for the pistons 25 and 26, has been denoted by 24. This is perpendicular to the centre line 31 of the housing 1, which at the same time is the principal flow direction for the second fluid which is transported through the pipelines 32 and 33 and into which the said first fluid is to be blended.
  • the flow restrictor member 6 has the general shape of a six-sided polyhedron limited by a pair of side walls 7, 8, a bottom wall 48, a top wall 49, a rear end wall 50, which is joined to the first piston 25, and a front end wall 51, which is joined to the second piston 26. More specifically, the flow restrictor member 6 is double wedge-shaped in that it is wedge-shaped both in its longitudinal direction, i.e.
  • the flow chamber 39 has a shape which is approximately uniform with the shape of the flow restrictor member 6.
  • the side walls 7, 8 of the flow restrictor member form a small angle with the side walls 5 and 10, respectively, of the chamber 39.
  • These two gaps 15, 16 constitute passages for the second fluid which is to pass from the pipeline 32, through the apparatus A according to the invention, to the second line 33.
  • the walls which define the gaps 15, 16 can be parallel in the position of symmetry, but the small deviation from parallelism and hence the widening gap shape is to be preferred.
  • the apparatus A further comprises means for introducing the said first fluid, which in the envisaged application should be constituted by steam, into the gaps 15, 16.
  • These means comprise, on the one hand, the two outer spaces 40a and 40b and the supply lines 41a, 41b to these spaces and, on the other hand, holes 18 in the side walls 5 and 10 of the flow chambers 39.
  • These holes 18 are distributed along the length of the side walls 5, 10 and are preferably disposed closer to the inlet openings 11 and 12, respectively, of the two gaps 15 and 16 than their outlet openings 13 and 14, respectively.
  • the holes 18 can be configured, for example, as circular holes or as gaps or slots.
  • the term "hole” should therefore not be given any restrictive meaning, but should cover all through openings, slots, etc., regardless of shape.
  • the holes In axial section, the holes have a shape which widens from the outer spaces 40a, 40b to the gaps 15, 16. This shape is particularly suitable where the second fluid, which flows up through the gaps 15, 16, is a fibre-containing suspension. If the supply of the said first fluid - the mix-in fluid - through the supply lines 41a, 41b were interrupted, whilst cellulose-containing fibre material continues to flow through the apparatus A, then the holes 18 are blocked by the fibre material and do not penetrate into the outer spaces 40a, 40b. When steam or a different blend-in fluid is turned on again through the lines 41a and 41b into the spaces 40a and 40b, respectively, this fluid will blow away the fibre plugs in the holes 18, so that these again become ready for use.
  • the holes, slots or equivalent 18 can be disposed in separate exchangeable plates, which can be screw-fastened and can fill a larger opening in the side walls 5, 10.
  • the user can acquire increased opportunities to adapt the inflow of the first fluid, in the present case steam, to other conditions. If for example, the production conditions should alter in the larger installation of which the apparatus according to the invention constitutes a part, an exchangeable plate can be replaced so that a plate is obtained having holes matched to the altered production conditions.
  • Also forming part of the equipment are pressure-detecting sensors, mounted upstream and downstream of the apparatus, and governor devices (these parts not shown) for controlling the piston 21 by influencing the flow in the lines 20a, 20b in order thereby to control the movements of the wedge-shaped flow restrictor member 6, in the longitudinal direction of the flow restrictor member, transversely to the principal flow direction for the pulp suspension or equivalent other fluid through the apparatus A, thereby enabling the width of the gaps 15, 16 and hence also the flow through the apparatus to be regulated.
  • the fluid which flows up through the pipelines 33, 34 and which in the patent claims and in the preceding text is referred to as the second fluid is a suspension of cellulose fibre pulp in water, and that the said first fluid, which is to be introduced into this suspension, is steam.
  • the pressure-detecting sensors (not shown) and the said governor devices measure or receive the measurement values of the pressures in the fibre pulp suspension upstream and downstream of the apparatus A in order to register a pressure differential.
  • the governor devices compare the registered pressure differential with a predefined desired value, which is set in dependence upon prevailing production conditions such as temperature, consistency, pulp type and capacity. This setting is preferably made automatically.
  • the governor device activates the control cylinder 20 by regulating the pressure and/or flow through the hydraulic lines 20a and 20b, so that the flow restrictor member 6 is shifted forwards or backwards in the direction of the axis 24, i.e. transversely to the principal flow direction coinciding with the axis 31, in order to set the gaps 15, 16 to the desired width.
  • the control cylinder 20 is activated and moves the flow restrictor member 6 transversely to the principal flow direction 31, so that the width of the gaps 15, 16 increases.
  • the thereby increased flow area makes it possible for the blockage to be dispersed and for a greater pulp flow to be obtained until the pressure on the inlet side drops and the pressure differential returns to normal.
  • the control cylinder 20 is then re-activated, so that the gap widths diminish, this continuing to be repeated until a stable state is achieved.
  • the flow restrictor member 6 is controlled in its axial movements by the pistons 25, 26 in the cylinders 27, 28, so that the longitudinal axis 24 of the flow restrictor member 6, the longitudinal axis of which at the same time constitutes the centre axis for the pistons 25, 26, will always coincide with the plane of symmetry of the flow chamber 39, this plane of symmetry coinciding with the principal flow direction 31 in the apparatus A.
  • the flow restrictor member 6 is nevertheless able to wobble, by small rotational movements, about its centre axis 24, due to the fact that the bearing pistons 25, 26 are cylindrical. This means that if one of the gaps 15, 16 begins to be blocked, the pressure in the other gap will increase and preferably in the region of the outlet passages 13 or 14.
  • the pressure from the fluid flowing in the gaps 15, 16 acts upon the inner sides 29, 30 of the bearing pistons 25, 26 via the lateral openings 43, 44.
  • the first piston 25, which is placed closest to the control cylinder 20 has an inner surface 29 which is larger than the surface 30 belonging to the other piston 27, which means that the pressure from the flowing fluid endeavours to press the flow restrictor member 6 in the direction of the control cylinder 20.
  • a damping in the form of a pressure can be imposed upon the other side of the control cylinder 20 so as to dampen the movements from the flow restrictor member 6.
  • a certain freedom of movement in the longitudinal direction 24 of the flow restrictor member 6 is nevertheless desirable since pressure variations in the said second fluid, which flows up through the apparatus A, and the counter-pressure from the control cylinder 20 can generate oscillating longitudinal movements of the flow restrictor member 6, which also counteract blockage or "plugging" of the gaps 15, 16.
  • the apparatus A may also be provided with a vibrator, which is connected up to the bearing piston 26 and acts in the longitudinal direction of the flow restrictor member 6.
  • the narrower surface 48, facing towards the flowing medium, of the wedge-shaped flow restrictor member 6 can be extended by a projecting guiding body.
  • the apparatus A' comprises a main body or housing 1', with a first flat end wall 37' and a second flat end wall 38' and between said first and second end walls 37', 38' a flow chamber 39' with the same general form as the flow chamber 39 in the previous embodiment.
  • the apparatus A' is mounted between the two pipelines 32' and 33' by means of flange connections analogous with the previous embodiment.
  • a flow restrictor member 6' which is essentially formed as a six-sided polyhedron limited by a pair of side walls 7', 8', a curved bottom wall 48' and a curved upper wall 49'.
  • the flow restrictor member 6' may be designed in analogy with the flow restrictor member 6 in the previous embodiment. However, it might be suitable to displace the centre axis 24' for those pistons (corresponding to pistons 26, 27 in the previous embodiment, which control the movements of the flow restrictor member 6') closer to the bottom wall 48' in order to center the flow restrictor member 6' under influence of the fluid flowing through the flow chamber 39'.
  • the two side walls 5' and 10' of the flow chamber 39' consist of a pair of double plates, namely an outer plate 5A', 10A' which is securely welded to the end walls 37', 38', and an inner plate 5B', 10B' which is detachably attached to the respective outer plate 5A', 10A' by means of bolts 60.
  • an outer plate 5A', 10A' which is securely welded to the end walls 37', 38'
  • an inner plate 5B', 10B' which is detachably attached to the respective outer plate 5A', 10A' by means of bolts 60.
  • a gap 15' and 16' respectively is provided in the same manner as for the previous embodiment.
  • the sides of the walls 5B' and 10B' facing the gaps 15' and 16' are provided with elongated recesses or grooves 61 in order to increase the turbulence of the fluid flowing through the gaps 15', 16' and thereby further improve the mixing of the second fluid which is to be mixed with said first fluid in the gaps 15', 16'.
  • a series of holes 18' are provided for introducing the said first fluid into the gaps 15', 16'. Behind these holes, an elongated opening 18A' is provided in the respective outer side wall 5A', 10A'.
  • an outer space 40a' and 40b' is provided outside the elongated openings 18A'.
  • Supply lines 41a' and 41b' are connected to these outer spaces 40a' and 40b', respectively, for said first fluid.
  • Each of the two side walls 7', 8' of member 6' is provided with a recess 62 on the side of the wall facing the gap 15' or 16'.
  • the recesses 62 take up the major part of the said wall sides and are covered by a thin sheet 63 of stainless steel.
  • the covered recesses 62 may be filled with sand, lead or steel shots, rubber or any other chock dampening material in a manner which may be known per se.
  • the axis 24' preferably is displaced towards the front end wall 48' of the flow restrictor member 6' in order to counteract tilting of the flow restrictor member 6' in the flow chamber 39'.
  • the embodiment according to Fig. 6 shows another way of efficiently preventing such tilting.
  • the two centre axis 24' and 24'' of pistons 25' and 26', respectively are parallel and displaced relative each other. Preferably, they are displaced in such a way that the axis 24' and 24'' are in a vertical plane coinciding with the plane of symmetry of the flow restrictor member 6'.
  • a guide pin 50, 51 is used on each of the pistons 25x and 26x, or optionally only on one of these in order to prevent tilting of the flow restrictor member 6x.
  • the guide pins 60, 61 are parallel with the piston axis and housed in the respective cylinder house, not shown.
  • the above-described apparatus A according to the invention exhibits a large number of advantages over apparatuses according to the prior art. It has a substantially simpler design, is very compact and is simple to install in existing pipe systems. This can be achieved by the fact that a pipe, in which the apparatus A is to be mounted, only needs to be cut off in two places in order to accommodate the apparatus, after which the apparatus is suitably connected, e.g. by a flange joint, to the thus cut-off pipe, with the pipelines 32 and 33 above corresponding to the cut-off parts of the pipe. No stand or base is needed to support the apparatus A, which also facilitates installation.
  • a further advantage is that the principal flow, i.e.
  • the flow of the pulp suspension does not need to alter its principal flow direction through the apparatus A, which means that a high velocity of the fluid through the gaps 15, 16 can be maintained, which means, in turn, that the added steam or other first fluid is well distributed in the second fluid (pulp suspension), thereby also reducing the risk of implosions. If such implosions should nevertheless occur, they will occur downstream and will not therefore cause any serious problems.
  • Another advantage of the apparatus A is that, as a result of its design, inter alia its mounting, it effectively inhibits blockage due to the fact that the flow restrictor member has a certain freedom of movement both in its longitudinal direction and about its longitudinal axis.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Dispersion Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Nozzles (AREA)
  • Paper (AREA)

Claims (19)

  1. Vorrichtung zum Zumischen eines ersten Fluids zu einem zweiten Fluid, wobei diese Vorrichtung (A) folgende Elemente umfaßt:
    ein Gehäuse (1) mit einer Strömungskammer (39) für das zweite Fluid,
    ein Strömungsbegrenzungsglied (6) in der Strömungskammer, und
    Mittel (18) zur Einleitung des ersten Fluids in mindestens einen Zwischenraum (15, 16) zwischen dem Strömungsbegrenzungsglied und den dem Strömungsbegrenzungsglied zugewandten Wänden (5, 10) der Strömungskammer (39),
    dadurch gekennzeichnet,
    daß das Strömungsbegrenzungsglied, in einer Ebene quer zu der Hauptströmungsrichtung (31) des zweiten Fluids betrachtet, sowie die Strömungskammer, in derselben Ebene betrachtet, im wesentlichen die Form eines Keils aufweisen,
    daß zwischen einer jeden der beiden in Keilform aufeinander zulaufenden Seiten des Strömungsbegrenzungsgliedes und jenen Wänden der keilförmigen Kammer, die dem Strömungsbegrenzungsglied zugewandt sind, ein Zwischenraum (15, 16) vorhanden ist, und
    daß die Mittel (18) zur Einleitung des ersten Fluids im Bereich dieser beiden Zwischenräume angeordnet sind.
  2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß das Strömungsbegrenzungsglied (6) sich keilförmig verjüngt, und zwar sowohl in seiner Längsrichtung, welche im rechten Winkel zu der Hauptströmungsrichtung des zweiten Fluids angeordnet ist, als auch in einer Richtung, welche linear der Hauptströmungsrichtung entspricht, jedoch gegenläufig zu dieser verläuft.
  3. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß das keilförmige Strömungsbegrenzungsglied (6) entlang seiner Längsachse (24), d.h. quer zu der Hauptströmungsrichtung, in bezug auf das Gehäuse (1) und folglich in bezug auf die dem Strömungsbegrenzungsglied zugewandten Wände (5, 10) beweglich angebracht ist, wodurch eine Veränderung der Breite der Zwischenräume (15, 16) ermöglicht wird.
  4. Vorrichtung nach einem der Ansprüche 1 - 3, dadurch gekennzeichnet, daß das keilförmige Strömungsbegrenzungsglied in zu beiden Seiten des Strömungsbegrenzungsgliedes angeordneten Lagerelementen (27, 28) montiert ist.
  5. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, daß die Lagerelemente (27, 28) Zylinder umfassen, in denen zylinderförmige Kolben (25, 26) montiert sind, welche mit beiden Enden des Strömungsbegrenzungsgliedes verbunden sind und eine Drehung des Strömungsbegrenzungsgliedes um seine Längsachse (24) ermöglichen.
  6. Vorrichtung nach einem der Ansprüche 1 - 4, dadurch gekennzeichnet, daß die dem Strömungsbegrenzungsglied zugewandten Innenseiten (29, 30) der Lagerkolben (25, 26) mit dem durch die Vorrichtung (A) fließenden Fluid in Berührung stehen.
  7. Vorrichtung nach einem der Ansprüche 1 - 6, gekennzeichnet durch einen derart angeordneten Steuerzylinder (20), daß damit das keilförmige Begrenzungsglied (6) bewegt werden kann, um so die Breite der Zwischenräume (15, 16) einzustellen.
  8. Vorrichtung nach Anspruch 7, dadurch gekennzeichnet, daß der dem Steuerzylinder (20) nächstgelegene Lagerkolben (25) eine Innenoberfläche (29) aufweist, welche größer ist als die Innenoberfläche des Lagerkolbens (26), welcher auf der anderen Seite des Begrenzungsgliedes angeordnet ist.
  9. Vorrichtung nach einem der Ansprüche 1 - 8, dadurch gekennzeichnet, daß die dem Strömungsbegrenzungsglied zugewandten Wände (5, 10) des Gehäuses (1) über Löcher (18), Schlitze oder äquivalente Elemente zur Einleitung des ersten Fluids in die Zwischenräume (15, 16) verfügen.
  10. Vorrichtung nach Anspruch 9, dadurch gekennzeichnet, daß die Löcher (18) näher an den Eingangsöffnungen (11, 12) als an den Ausgangsöffnungen (13, 14) der Zwischenräume (15, 16) angeordnet sind.
  11. Vorrichtung nach Anspruch 9 oder 10, dadurch gekennzeichnet, daß die Löcher von den Zwischenräumen aus gerechnet in Axialrichtung eine sich konisch verjüngende Form aufweisen.
  12. Vorrichtung nach einem der Ansprüche 1 - 11, dadurch gekennzeichnet, daß die Zwischenräume (15, 16) sich in Strömungsrichtung verbreitern, wenn das Strömungsbegrenzungsglied symmetrisch in die Strömungskammer eingesetzt ist.
  13. Vorrichtung nach einem der vorangegangenen Ansprüche, dadurch gekennzeichnet, daß sie auch Steuereinrichtungen umfaßt, welche dazu dienen, das Differential zwischen den Druckverhältnissen abströmseits der Ausgangsöffnung und zuströmseits der Eingangsöffnung der Vorrichtung (A) zu messen und in Abhängigkeit zu einem gemessenen Druckdifferential in bezug auf einen Vorgabewert eine Verschiebung des keilförmigen Strömungsbegrenzungsgliedes (6) in Längsrichtung, d.h. quer zu der Hauptströmungsrichtung des zweiten Fluids durch die Vorrichtung, herbeizuführen.
  14. Vorrichtung nach einem der Ansprüche 1 - 13, dadurch gekennzeichnet, daß zumindest eine der Oberflächen, welche die Begrenzungsflächen des Zwischenraums (15', 16') darstellen, uneben ist.
  15. Vorrichtung nach Anspruch 14, dadurch gekennzeichnet, daß die Unebenheit Längsrillen bzw. Vertiefungen (61) in einer der Oberflächen umfaßt.
  16. Vorrichtung nach Anspruch 15, dadurch gekennzeichnet, daß die Vertiefungen bzw. die Rillen sich entlang der Längsrichtung der Wand, d.h. quer zu der Hauptströmungsrichtung des durch den Zwischenraum durchströmenden Fluids, erstrecken.
  17. Vorrichtung nach einem der Ansprüche 14 - 16, dadurch gekennzeichnet, daß die dem Zwischenraum zugewandten Oberflächen der Strömungskammer (39') sowie des Strömungsbegrenzungsgliedes (6') uneben sind und bevorzugterweise in Längsrichtung mit Vertiefungen bzw. Rillen versehen sind, welche quer zu der Strömungsrichtung des Fluids verlaufen.
  18. Vorrichtung nach einem der Ansprüche 1 - 17, gekennzeichnet durch Mittel zum Verhindern eines Umkippens des Strömungsbegrenzungsgliedes in der Strömungskammer.
  19. Vorrichtung nach einem der Ansprüche 1 - 18, dadurch gekennzeichnet, daß das Strömungsbegrenzungsglied (6') an jenen Seiten seiner Wände (7', 8'), welche den Zwischenräumen (15', 16') zugewandt sind, mit stoßdämpfenden Mitteln (62, 63) ausgestattet ist.
EP95910027A 1994-02-07 1995-01-31 Vorrichtung zum mischen einer ersten flüssigkeit in eine zweite flüssigkeit Expired - Lifetime EP0743876B1 (de)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
SE9400387 1994-02-07
SE9400387A SE502393C2 (sv) 1994-02-07 1994-02-07 Apparat för inblandning av ett första fluidum i ett andra fluidum
SE9403010A SE9403010D0 (sv) 1994-09-09 1994-09-09 Apparat för inblandning av ett första fluidum i ett andra fluidum
SE9403010 1994-09-09
PCT/SE1995/000104 WO1995021016A1 (en) 1994-02-07 1995-01-31 Apparatus for mixing a first fluid into a second fluid

Publications (2)

Publication Number Publication Date
EP0743876A1 EP0743876A1 (de) 1996-11-27
EP0743876B1 true EP0743876B1 (de) 1998-01-07

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EP (1) EP0743876B1 (de)
JP (1) JPH09508316A (de)
CN (1) CN1140420A (de)
AT (1) ATE161753T1 (de)
AU (1) AU682936B2 (de)
BR (1) BR9506728A (de)
CA (1) CA2182373A1 (de)
DE (1) DE69501393T2 (de)
ES (1) ES2114309T3 (de)
FI (1) FI116967B (de)
NO (1) NO304926B1 (de)
WO (1) WO1995021016A1 (de)

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Publication number Priority date Publication date Assignee Title
SE514543C2 (sv) * 1995-03-08 2001-03-12 Kvaerner Pulping Tech Apparat för inblandning av ett första fluidum i ett andra fluidum
WO1999019560A1 (en) 1996-11-25 1999-04-22 A. Ahlström Osakeyhtiö Method and apparatus for heating pulps
US6443609B2 (en) 1998-10-21 2002-09-03 Precision Venturi Ltd. Fluid inductor system and apparatus having deformable member for controlling fluid flow
US6170978B1 (en) * 1998-10-21 2001-01-09 Precision Venturi Ltd. Fluid inductor apparatus having deformable member for controlling fluid flow
SE535185E (sv) * 2010-09-10 2019-03-07 Ovivo Luxembourg Sarl Apparat för att blanda in en andra fluid i en första fluid innefattande en reglerenhet
CN110396846B (zh) * 2019-06-28 2020-11-17 诸暨市智焘智能科技有限公司 一种基于流体力学的造纸用纤维分散设备
CN110624437A (zh) * 2019-08-27 2019-12-31 北京国电龙源环保工程有限公司 一种脱硫工艺水与脱硫工业水的替换装置
CN111888965B (zh) * 2020-09-29 2021-03-12 安徽尚成建设工程有限公司 基于气流浮动的连续环流式搅拌桨及彩砂混砂机构

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO140968C (no) * 1977-04-04 1979-12-19 Dyno Industrier As Anlegg for blanding av pulveraktige materialer
US5240326A (en) * 1990-12-28 1993-08-31 Environmental Consideration, Ltd. Chemical handling and mixing system
SE468341C (sv) * 1991-03-20 1997-08-04 Kvaerner Pulping Tech Apparat för blandning av en suspension av ett cellulosahaltigt fibermaterial och ett fluidum

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NO304926B1 (no) 1999-03-08
BR9506728A (pt) 1997-09-23
DE69501393D1 (de) 1998-02-12
AU1826795A (en) 1995-08-21
ATE161753T1 (de) 1998-01-15
CN1140420A (zh) 1997-01-15
FI963094A0 (fi) 1996-08-06
FI116967B (fi) 2006-04-28
WO1995021016A1 (en) 1995-08-10
AU682936B2 (en) 1997-10-23
NO963285L (no) 1996-10-04
CA2182373A1 (en) 1995-08-10
FI963094A (fi) 1996-08-06
DE69501393T2 (de) 1998-04-30
NO963285D0 (no) 1996-08-06
EP0743876A1 (de) 1996-11-27
ES2114309T3 (es) 1998-05-16
JPH09508316A (ja) 1997-08-26

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