WO2019185236A1 - Dispositif de mélange de fibres ou de particules et agent liant - Google Patents

Dispositif de mélange de fibres ou de particules et agent liant Download PDF

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Publication number
WO2019185236A1
WO2019185236A1 PCT/EP2019/053581 EP2019053581W WO2019185236A1 WO 2019185236 A1 WO2019185236 A1 WO 2019185236A1 EP 2019053581 W EP2019053581 W EP 2019053581W WO 2019185236 A1 WO2019185236 A1 WO 2019185236A1
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WO
WIPO (PCT)
Prior art keywords
mixing
mixing device
mixing chamber
mixer shaft
tools
Prior art date
Application number
PCT/EP2019/053581
Other languages
German (de)
English (en)
Inventor
Fabian KÖFFERS
Horst Weiss
Andre Boßmann
Klaus Schürmann
Original Assignee
Siempelkamp Maschinen- Und Anlagenbau Gmbh
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 Siempelkamp Maschinen- Und Anlagenbau Gmbh filed Critical Siempelkamp Maschinen- Und Anlagenbau Gmbh
Publication of WO2019185236A1 publication Critical patent/WO2019185236A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N1/00—Pretreatment of moulding material
    • B27N1/02—Mixing the material with binding agent
    • B27N1/0227—Mixing the material with binding agent using rotating stirrers, e.g. the agent being fed through the shaft of the stirrer
    • B27N1/0236—Mixing the material with binding agent using rotating stirrers, e.g. the agent being fed through the shaft of the stirrer with the stirrers rotating about an horizontal axis, e.g. in consecutive casings
    • B27N1/0245—Mixing the material with binding agent using rotating stirrers, e.g. the agent being fed through the shaft of the stirrer with the stirrers rotating about an horizontal axis, e.g. in consecutive casings with a single stirrer shaft
    • 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
    • B01F35/10—Maintenance of mixers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/05—Stirrers
    • B01F27/07—Stirrers characterised by their mounting on the shaft
    • B01F27/071—Fixing of the stirrer to the shaft
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/05—Stirrers
    • B01F27/11—Stirrers characterised by the configuration of the stirrers
    • B01F27/112—Stirrers characterised by the configuration of the stirrers with arms, paddles, vanes or blades
    • B01F27/1121—Stirrers characterised by the configuration of the stirrers with arms, paddles, vanes or blades pin-shaped
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/60—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis
    • B01F27/62—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis comprising liquid feeding, e.g. spraying means
    • 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
    • B01F33/50—Movable or transportable mixing devices or plants
    • B01F33/501—Movable mixing devices, i.e. readily shifted or displaced from one place to another, e.g. portable during use
    • B01F33/5013—Movable mixing devices, i.e. readily shifted or displaced from one place to another, e.g. portable during use movable by mechanical means, e.g. hoisting systems, grippers or lift trucks
    • 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
    • B01F33/50—Movable or transportable mixing devices or plants
    • B01F33/502—Vehicle-mounted mixing devices
    • B01F33/5025—Vehicle-mounted mixing devices using rails for guiding the mixing installation during moving or displacing
    • 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
    • B01F33/81—Combinations of similar mixers, e.g. with rotary stirring devices in two or more receptacles
    • 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
    • B01F35/45—Closures or doors specially adapted for mixing receptacles; Operating mechanisms therefor
    • B01F35/451—Closures or doors specially adapted for mixing receptacles; Operating mechanisms therefor by rotating them about an axis parallel to the plane of the opening
    • 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
    • B01F35/50—Mixing receptacles
    • B01F35/511—Mixing receptacles provided with liners, e.g. wear resistant or flexible liners
    • 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
    • B01F35/50—Mixing receptacles
    • B01F35/512—Mixing receptacles characterised by surface properties, e.g. coated or rough
    • 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
    • B01F35/56—General build-up of the mixers
    • B01F35/561—General build-up of the mixers the mixer being built-up from a plurality of modules or stacked plates comprising complete or partial elements of the mixer
    • 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
    • B01F35/90—Heating or cooling systems
    • B01F35/92—Heating or cooling systems for heating the outside of the receptacle, e.g. heated jackets or burners
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
    • B27N3/08—Moulding or pressing
    • B27N3/18—Auxiliary operations, e.g. preheating, humidifying, cutting-off
    • 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
    • B01F35/90—Heating or cooling systems
    • B01F2035/98—Cooling
    • 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
    • B01F33/50—Movable or transportable mixing devices or plants
    • B01F33/501—Movable mixing devices, i.e. readily shifted or displaced from one place to another, e.g. portable during use
    • B01F33/5011—Movable mixing devices, i.e. readily shifted or displaced from one place to another, e.g. portable during use portable during use, e.g. hand-held

Definitions

  • the invention relates to a mixing device for the continuous mixing of fibers with a binder for the Fier ein of fiber or particle board, wherein the mixing device comprises at least one supported by a framework mixing chamber and therein a plurality of fixed to a rotatable mixer shaft mixing or conveying tools.
  • the mixing chamber is generally cylindrical in shape as a drum, but this drum is not rotated, but is fixed and only the mixer shaft rotates with the mixing or conveying tools.
  • the gluing of fibers or chips and consequently the mixing of fibers or chips with a binder or glue represents an essential process step in the course of the production of fiber or chipboard.
  • the quality of the plates produced, for. B. wood-based panels or in particular also material plates from the fibers of the straw of annual plants, also depends significantly on the quality of the fibers and in particular a homogeneous gluing of the fibers.
  • the description of the invention focuses on the mixing of fibers and binder, but this does not exclude the use of chips instead of fibers.
  • a device for the continuous lining of fibers which is designed as a horizontally oriented gluing mixer in drum construction, is known for example from DE 24 38 818.
  • the mixing shaft is hollow in this embodiment and serves the glue supply.
  • the mixer shaft is occupied with mixing tools, which are provided in the region of their hollow training with it Leimschleuderrohren protruding.
  • the diameter of such a mixing container is about 600 mm, wherein a rotational speed of the mixer shaft of 1500 revolutions per minute is proposed. This is to achieve a throughput of 3 to 4 t fibers per hour.
  • the mixing chamber has at least one loading opening for the supply of fibers and at least one discharge opening for the removal of the fiber-binder mixture and a plurality of binder feed openings for the supply of the binder.
  • the invention according to DE 10 2009 057 916 B4 proposes that a plurality of spiked combs distributed over the circumference of the mixer shaft, each with a plurality of radially outwardly oriented spines, are provided as mixing tools, wherein the spiked combs extend substantially parallel to the mixer axis and in each case two adjacent ones Spiked combs are arranged offset in the axial direction by a predetermined amount to each other.
  • spiked combs or spikes take on the one hand a mixing function and on the other hand a conveying function, because in rotation of the mixer shaft with the mixing tools, the fibers are not only mixed with the binder, but the mixture is transported simultaneously in the conveying direction of the loading opening to the discharge properly and with high throughput , Due to the axial offset of the individual spiked combs one achieves a spiral arrangement of the spikes, which improves the conveying effect.
  • the individual spines can also be referred to as spines or pins. It is also known to use shovel-like conveying tools instead of these pins, in particular in the vicinity of the loading or unloading opening.
  • the spines, pins, spikes and shovels will be referred to in the following simplified as mixing or conveying tools Nevertheless, this per se successfully proven design is associated with disadvantages, which is mainly found in complicated maintenance.
  • the high speeds and centrifugal accelerations are partly responsible for high temperatures in the mixer. This creates the risk that at higher temperatures quickly curable glues and binders, such as isocyanate, cause damage in the mixing chamber.
  • glues and binders such as isocyanate
  • other suitable binders would be primarily methylene diphenyl isocyanates, urea formaldehydes, phenolic resins and the like. ⁇ .
  • the mixing chamber must then be cleaned during a production standstill with great effort.
  • the mixing chamber inner wall and the tools are also subject to high wear, depending on the fiber and binder material. For this purpose, it is already known to use wear-resistant materials for the mixing chamber and the tools. However, a repair or replacement of these parts is relatively often necessary, which also leads to a loss of production.
  • the invention has for its object to provide a mixing device that is easier to maintain and adapt to different process parameters.
  • the mixing or conveying tools are also formed in the context of this invention without binder feed, d. H. the binder is not supplied via the mixing or conveying tools themselves, but via separate (non-rotating) binder feed tubes, which in z. B. radial direction by a predetermined amount through the mixing chamber shell protrude into the interior of the mixing chamber. It is expedient if the supply pipes projecting into the mixing chamber are arranged offset in the longitudinal direction to the tools. This configuration allows the mixing or conveying tools to readily rotate at high speeds without colliding with the feed tubes, although the feed tubes may protrude into the area of the mixing or conveying tools.
  • the mixing device according to the invention is initially suitable for the gluing of fibers, for. B. for MDF production.
  • fibers of annual plants eg. B. fibers of straw, z. B. rice straw, glues.
  • isocyanate or an isocyanate-containing binder is used as a binder.
  • This binder is particularly useful for such annual plants because some annual plants are often provided with a wax layer.
  • the high adhesive effect of isocyanate-containing binders nevertheless ensures perfect processing.
  • the mixing device according to the invention is also particularly well suited for the mixing of fibers and in particular fibers with thermoplastic synthetic fibers, for. B. bicomponent fibers.
  • mixing and conveying tools can therefore be easily replaced maintenance-friendly and fast.
  • the mixing or conveying tool can be set differently. This is done by moving individual sliding blocks or exchanging strips.
  • the mixing or conveying tools wear over time by friction with the minerals in and on the fibers. The cost of such a change in setting or the replacement of tools would be enormously high and would interrupt production.
  • the mixer shaft according to the invention is provided with partially covered grooves in which a sliding block or a bar can be moved, which receives a tool.
  • partially covered grooves are therefore to be understood grooves that have an opening width to be able to pass through an end of a tool can.
  • Partially covered also means that the groove widens radially inward, so that a sliding block adapted to the expanded cross-section can not fall out upon rotation of the mixer shaft.
  • the sliding block can therefore only be inserted from one end of the mixer shaft or an extension hole in the groove and under the cover. Open areas of the groove can be advantageously protected by means of covers against dirt deposits.
  • a plurality of parallel grooves extend axially on the circumference of the mixer shaft.
  • the mixing or conveying tools can be distributed as desired over the entire length of the mixer shaft. For example, depending on
  • the fiber type and length any number of conveying tools in the loading or unloading use.
  • the mixing tools so for example spikes, can be accommodated in the required number.
  • the distance between the tools is also adjustable.
  • the mixing or conveying tools with a threaded bolt at the end in a threaded bore of the sliding block can be screwed.
  • This attachment is easy to manufacture and the maintenance and replacement of tools is greatly simplified.
  • a rotatable adjustment for the conveying tools is created.
  • the mixing chamber comprises two curved and connectable half-plates made of sheets.
  • the mixing chamber is then divisible and the mixer shaft with its tools and the inner peripheral surface of the mixing chamber are freely accessible, which greatly simplifies any maintenance.
  • the framework is divided into an upper and a lower frame, and in particular when the half-shells are supported in an upper frame part and a lower frame part and optionally, when the upper frame part and the lower frame part via a Joint are connected together.
  • the upper and lower frame part which may be formed, for example, similar to a receiving tray for the half-shells, with the half-shells hinged. If this unfolding is made possible, for example, by more than 90 °, preferably even by 180 °, one obtains the particular advantage that the half shells of the mixing chamber can be removed from the upper frame part and / or the lower frame part. In this case, for reasons of maintenance shortening even a half shell with signs of wear can be completely replaced.
  • cooling channels with at least one coolant inlet and a coolant outlet are provided between the mixing chamber and the framework on the outer peripheral surface of the mixing chamber.
  • the mixing chamber can be easily cooled in this way, so that premature curing of binders can be suppressed.
  • the cleaning work in the mixing chamber are thereby reduced.
  • the cooling channels can be removed and serviced or replaced immediately. It is advantageously provided that the cooling channels are arranged meander-shaped on the outer peripheral surface of the mixing chamber.
  • the cooling channels run meandering, in particular in the conveying direction of the material, so that the heat absorption is distributed relatively uniformly in the cooling liquid over the entire length of the mixing chamber.
  • a part of a cooling channel is formed by the outer peripheral surface of the mixing chamber.
  • the cooling liquid thereby has direct contact with the outer peripheral surface of the mixing chamber and the heat transfer value is once again improved. It is advantageously provided that a cooling channel is releasably secured on the outer peripheral surface of the mixing chamber. With a maintenance replacement of a half shell, the cooling channels can be easily removed and reused.
  • the inner peripheral surface of the mixing chamber is provided with a low-wear armor.
  • An armor layer of wear-resistant material ensures that the abrasive components in and around the fibers hardly abrasion on the
  • the inner peripheral surface of the mixing chamber is provided with a welding layer with a surface hardness> 600 HV.
  • the armor is sufficiently effective.
  • Such an armor layer is easy to apply.
  • at least one welding layer is applied to the base coat of weldable steel, which has a greater hardness than the base coat.
  • the welding layer is provided, for example, in conjunction with a tungsten carbide layer.
  • the welding layer may be applied spirally.
  • Mixing chamber wall can be adapted by the heat treatment.
  • FIG. 1 shows a mixing device of the invention in a closed state in a perspective view
  • FIG. 2 shows an exploded view of a mixing device of the invention in a perspective view
  • Fig. 3 shows a detail of the mixer shaft of the invention in a perspective view
  • Fig. 4 shows a mixing chamber of the invention in a perspective view with cooling channels
  • Fig. 5 is a plan view of a mixing system in the invention.
  • a mixing device 101 for continuous mixing of fibers with a binder for the production of fiberboard has a substantially horizontally arranged, cylindrical mixing chamber 1 with a hollow cylindrical jacket 6 and at least one mixer shaft 2 arranged in a rotating manner in the mixing chamber 1, to which a plurality of mixing tools 3 are fastened.
  • the mixing chamber 1 has a loading opening 4, which is formed in the embodiment as a loading funnel. About this loading funnel, the fibers are introduced from above into the interior of the mixing chamber 1. The fibers are over at the
  • the rotating mixer shaft 2 mounted mixer tools 3 mixed with a binder and simultaneously conveyed in the conveying direction from front to back through the mixer.
  • the binder is supplied via a plurality of binder supply pipes 5, which are attached to the mixing chamber 1 and project through the mixing chamber jacket 6 into the interior of the mixing chamber 1.
  • the supply of the binder is carried out in the illustrated embodiment, therefore, not on the mixer shaft or via the mixing tools, but on the firmly attached to the mixing chamber 1 and the jacket 6 of the mixing chamber 1 feed tubes 5, which are formed as feed nozzles.
  • the mixing device has a discharge opening 7, which is arranged endwise in the conveying direction. About this discharge opening 7, the mixture of fibers on the one hand and binders on the other hand is discharged or ejected.
  • the discharge opening 7 is provided in the lower region of the mixing chamber 1.
  • An unillustrated drive is connected to the mixer shaft 2 in a conventional manner.
  • the drive is arranged on the end or outlet side.
  • Fig. 1 illustrates that a drive 34 is connected to the mixer shaft 2 in a conventional manner.
  • the drive is arranged on the end or outlet side. This should be easily coupled, because it recognizes below the mixing device, a transport 43, which is suitable to drive away the entire mixing device 101. This will be explained in more detail in the description of FIG.
  • the fibers are introduced via the loading opening 4 in the mixing chamber 1 and at the same time the binder, for. B. a glue such. As isocyanate, on the
  • the fibers are transported by means of the mixing tools 3 along the longitudinal direction and thereby over the
  • the rotational speed n of the mixer shaft and the diameter d of the mixing chamber are matched to one another such that the (nominal) centrifugal acceleration a of the fibers in the region of the mixer inner wall is 15,000 to 30,000 m / sec 2 .
  • the diameter d is preferably 300 mm to 1500 mm and the speed n of the mixer shaft is preferably 1000 to 4000 U / min. It is therefore worked with relatively small diameters and high speeds, so that high centrifugal accelerations are achieved. This ensures that the fibers are pressed well on the jacket 6 and the inner wall of the mixer 1 and compressed as it were. This leads to increased friction and thus to a better gluing behavior. It can also high throughputs of z. B. reach 5 t to 40 t per hour.
  • FIG. 2 shows in a special way the structure of the mixing device 101.
  • it consists of a lower, usually on the foundation releasably secured lower frame part 17 and an upper frame part 16, here in each case a cup-shaped sheet metal design with reinforcing Have bandages.
  • the upper frame part 16 and the lower frame part 17 are connected to each other via a hinge 18.
  • This joint 18 makes it possible that the cup-shaped upper frame member 16 and the cup-shaped lower frame member 17 can be folded to form a tubular jacket 6, but can also be opened by about 180 ° by means of a drive with gear 19.
  • the mixing chamber 1 which is likewise divided into an upper half-shell 11 and a lower half-shell 12, is inserted into the shell-shaped framework parts 16, 17
  • the half shells 11, 12 are preferably bent from a sheet and heat treated. If the mixing chamber 1 is also divided in the pivoting or Aufklappvorgang with unfolded, the mixer shaft 2 with their mixing tools 3 is easy to maintain, freely accessible. In addition, the upper half-shell 11 or the lower half-shell 12 can be removed from the mixing chamber of the respective half-frame and be completely replaced if the wear is too great.
  • a plurality of mixing tools 3 distributed over the circumference of the mixer shaft 2, each having a plurality of radially outwardly oriented spikes 8, are provided as mixer tools 3 in the exemplary embodiment.
  • the mixing tools 3 extend along the longitudinal direction of the mixing chamber and consequently parallel to the longitudinal axis of the mixer.
  • two adjacent mixing tools 3 are arranged offset in the axial direction or in the longitudinal direction by a predetermined amount to each other. This configuration results in that the ends of the individual spines 8 are arranged in a helical shape in a plan view.
  • a plurality of feed pipes 5 are arranged in a row along the longitudinal direction of the mixer.
  • the binder feed tubes 5 protruding into the mixing chamber through the mixer wall 6 are arranged offset in the longitudinal direction to the spikes 8 of the mixing tools 3.
  • FIG. 2 further shows that the region of the mixer shaft 2 assigned to the loading opening 4 is designed to be free of spikes, wherein in this feed region
  • Conveyor tools 9 are fixed to the mixer shaft 2.
  • Startup tools or start paddles formed ensure that the fibers entering via the loading opening 4 into the mixing chamber 1 are accelerated rapidly and conveyed into the gluing area.
  • ejection tools 10 are attached to the mixer shaft 2 in this discharge area. These ejection tools 10 are paddle-shaped formed as Ausschpaddel. They ensure rapid removal of the mixture of fibers and binder and consequently the glued fibers via the discharge opening 7.
  • the invention also includes embodiments in which the binder on the mixer shaft and the mixing tools, for. B. the spines, is supplied.
  • the mixer shaft is designed as a Flohlwelle and the spikes are also designed as a binder feed tubes, which are connected to the mixer shaft.
  • glue feed tubes which project in a substantially radial direction through the mixer jacket 6 into the mixing chamber 1
  • these glue tubes or their nozzles are designed to be height-adjustable. This means that the immersion depth of the glue pipes can be adjustable in the radial direction into the interior of the mixing chamber.
  • Fig. 3 shows clearly how the mixing and conveying tools 3, 8, 9, 10 are easy to adjust to the mixer shaft 2 adjustable.
  • the mixer shaft 2 has several in the longitudinal direction in this embodiment
  • each mixing and conveying tool 3, 8, 9, 10 has on a lower shaft a threaded bolt 23 which is screwed into the sliding block 21. With the help of a lock nut 24, the mixing and conveying tool 3, 8, 9, 10 is fixed. In this case, a thick washer 25 larger diameter than that of the lock nut 24 helps to direct the forces beyond the groove cover in the mixer shaft 2.
  • Fig. 4 shows the cooling of the mixing chamber 1 in the context of this invention.
  • the jacket of the mixer is preferably water-cooled.
  • cooling channels of flattening tools 26 with at least one coolant inlet 28 and a coolant outlet 29 are mounted on the outer surface of the mixing chamber.
  • the individual channel sections 27.1, 27.2 run in this embodiment in parallel in the axial direction and are connected via deflections 31 meandering.
  • the Flalbzeuge pipes, pipe sections or bent sheets which are glued on the outer circumference of the mixing chamber 1, welded or screwed using interspersed seals.
  • the heat transfer is significantly improved.
  • Form cooling channel 26 is shown in Fig. 4a. If the cooling channel 26 is detachably mounted on the mixing chamber 1, it can easily be maintained separately.
  • FIG. 5 shows an entire mixing system 100, by way of example for a large rice straw plant. In such a plant, the mixing devices are particularly at risk because the fibers to be mixed with binders are still very abrasive.
  • 101 working positions 41.1, 41.2, 41.3, 41.4 are provided for the mixing devices and two maintenance positions 42.1, 42.2. in a separate maintenance room. In both positions, the upper frame part 16 and the upper Flalbschale 11 are shown unfolded by 180 °.
  • the solution shown and preferred in the exemplary embodiment in this case comprises transport carriages which can be moved on rails 44. It is envisaged that a lifting device 45 is present (recognizable in Fig. 1), which can lift the mixing device 101 detached from the foundation, so that a trolley can drive underneath. The mixing device is then deposited in its entirety on the transport means 43 and, for example, from a
  • the means of transport can be moved longitudinally and transversely, as offered for example by the company Strothmann Machines and Handling Systems GmbH with its round rail system.
  • the mixing device In the maintenance position, the mixing device can then be conveniently opened and cleaned without interrupting the production process. If the mixing device is connected to a drive 34, the mixer shaft 2 can be rebalanced.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Abstract

L'invention concerne un dispositif de mélange destiné à mélanger en continu des fibres ou des particules avec un agent liant en vue de fabriquer des panneaux de fibres ou de particules, le dispositif de mélange comprenant au moins une chambre de mélange (1) soutenue par un cadre (15) ainsi que, dans cette dernière, plusieurs outils de mélange ou de transport (3, 8, 9, 10) fixés à un arbre mélangeur rotatif (2). Selon l'invention, afin de concevoir un dispositif de mélange qui soit plus facile à entretenir et à adapter à différents paramètres de processus, l'arbre mélangeur (2) comprend des rainures partiellement recouvertes (20) dans lesquelles sont agencés des coulisseaux mobiles (21) qui peuvent être reliés à un outil de mélange ou de transport (3, 8, 9, 10).
PCT/EP2019/053581 2018-03-24 2019-02-13 Dispositif de mélange de fibres ou de particules et agent liant WO2019185236A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018002473.4 2018-03-24
DE102018002473.4A DE102018002473A1 (de) 2018-03-24 2018-03-24 Mischvorrichtung für Fasern oder Späne und Bindemittel

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DE102019000528A1 (de) 2019-01-24 2020-07-30 Siempelkamp Maschinen- Und Anlagenbau Gmbh Vorrichtung und Verfahren zur Vermischung von Fasern oder Spänen mit Bindemittel

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DE60006933T2 (de) * 1999-09-23 2004-11-11 Lam Research Corp., Fremont Herstellungsvorrichtung für halbleiter mit keramischer fliesenauskleidung
EP1760193A2 (fr) * 2005-08-29 2007-03-07 Voith Patent GmbH Rouleau chauffable
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DE102009057916B4 (de) 2009-05-15 2015-04-02 Siempelkamp Maschinen- Und Anlagenbau Gmbh Verfahren und Vorrichtung zum kontinuierlichen Mischen von Fasern mit einem Bindemittel
CN107297181A (zh) * 2017-08-16 2017-10-27 郑州大学 一种禽类饲料搅拌装置
CN107754679A (zh) * 2017-12-08 2018-03-06 南京高正农用化工有限公司 一种便于拆卸的搅拌机
CN107790037A (zh) * 2017-12-01 2018-03-13 响水台舍化工有限公司 一种对甲苯磺酰脲生产用搅拌装置

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Publication number Priority date Publication date Assignee Title
US3734471A (en) * 1970-11-24 1973-05-22 Draiswerke Gmbh Device for continuous mixing of solids with liquids
DE2438818A1 (de) 1974-08-13 1976-02-26 Draiswerke Gmbh Vorrichtung zum kontinuierlichen beleimen von fasern
DE60006933T2 (de) * 1999-09-23 2004-11-11 Lam Research Corp., Fremont Herstellungsvorrichtung für halbleiter mit keramischer fliesenauskleidung
EP1760193A2 (fr) * 2005-08-29 2007-03-07 Voith Patent GmbH Rouleau chauffable
DE102009057916B4 (de) 2009-05-15 2015-04-02 Siempelkamp Maschinen- Und Anlagenbau Gmbh Verfahren und Vorrichtung zum kontinuierlichen Mischen von Fasern mit einem Bindemittel
US20110252981A1 (en) * 2010-04-19 2011-10-20 Isenberg Timothy J Food Processing Vat With Heat Exchangers
CN107297181A (zh) * 2017-08-16 2017-10-27 郑州大学 一种禽类饲料搅拌装置
CN107790037A (zh) * 2017-12-01 2018-03-13 响水台舍化工有限公司 一种对甲苯磺酰脲生产用搅拌装置
CN107754679A (zh) * 2017-12-08 2018-03-06 南京高正农用化工有限公司 一种便于拆卸的搅拌机

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