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WO2019185234A1 - Système mélangeur - Google Patents

Système mélangeur Download PDF

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Publication number
WO2019185234A1
WO2019185234A1 PCT/EP2019/053565 EP2019053565W WO2019185234A1 WO 2019185234 A1 WO2019185234 A1 WO 2019185234A1 EP 2019053565 W EP2019053565 W EP 2019053565W WO 2019185234 A1 WO2019185234 A1 WO 2019185234A1
Authority
WO
WIPO (PCT)
Prior art keywords
mixing
mixer system
mixer
mixing chamber
mixing device
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.)
Ceased
Application number
PCT/EP2019/053565
Other languages
German (de)
English (en)
Inventor
Fabian KÖFFERS
Horst Weiss
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.)
Siempelkamp Maschinen und Anlagenbau GmbH and Co KG
Original Assignee
Siempelkamp Maschinen und Anlagenbau GmbH and Co KG
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 and Co KG filed Critical Siempelkamp Maschinen und Anlagenbau GmbH and Co KG
Publication of WO2019185234A1 publication Critical patent/WO2019185234A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • B01F35/10—Maintenance of mixers
    • 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
    • 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
    • B01F27/07—Stirrers characterised by their mounting on the shaft
    • B01F27/072—Stirrers characterised by their mounting on the shaft characterised by the disposition of the stirrers with respect to the rotating axis
    • B01F27/0723—Stirrers characterised by their mounting on the shaft characterised by the disposition of the stirrers with respect to the rotating axis oblique with respect to the rotating axis
    • 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
    • B01F27/072—Stirrers characterised by their mounting on the shaft characterised by the disposition of the stirrers with respect to the rotating axis
    • B01F27/0724—Stirrers characterised by their mounting on the shaft characterised by the disposition of the stirrers with respect to the rotating axis directly mounted on the rotating axis
    • 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
    • B01F27/072—Stirrers characterised by their mounting on the shaft characterised by the disposition of the stirrers with respect to the rotating axis
    • B01F27/0726—Stirrers characterised by their mounting on the shaft characterised by the disposition of the stirrers with respect to the rotating axis having stirring elements connected to the stirrer shaft each by a single radial rod, other than open frameworks
    • 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
    • B01F27/05—Stirrers
    • B01F27/11—Stirrers characterised by the configuration of the stirrers
    • B01F27/19—Stirrers with two or more mixing elements mounted in sequence on the same axis
    • B01F27/192—Stirrers with two or more mixing elements mounted in sequence on the same axis with dissimilar elements
    • 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
    • B01F27/70—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis with paddles, blades or arms
    • 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
    • B01F33/80—Mixing plants; Combinations of mixers
    • B01F33/81—Combinations of similar mixers, e.g. with rotary stirring devices in two or more receptacles
    • B01F33/812—Combinations of similar mixers, e.g. with rotary stirring devices in two or more receptacles in two or more alternative mixing receptacles, e.g. mixing in one receptacle and dispensing from another receptacle
    • 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
    • B01F35/56—General build-up of the mixers
    • 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

Definitions

  • the invention relates to a mixer system with at least two mixing devices for continuously mixing fibers or chips with a binder for the production of fiber or chipboard, each mixing device at least one of a framework supported mixing chamber and therein a plurality of fixed to a rotatable mixer shaft mixing or Having 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.
  • Mixing chamber can be selected. This significantly improves the mixing ratio.
  • 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 of DE 10 2009 057 916 B4 proposes that a plurality of spiked combs distributed over the circumference of the mixer shaft, each having 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 spiked combs are 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, thorns and blades are to be referred to in the following simplified as mixing or conveying tools.
  • the mixing chamber inner wall and the tools are also subject to high wear, depending on the fiber and binder material.
  • wear-resistant materials for the mixing chamber and the tools.
  • 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 mixer system with mixing devices for fibers and glues, which can also be maintained during production.
  • the mixer system has at least one working position in which a mixing device performs the mixing operation during operation, and at least one maintenance position, away from the working positions, to which a mixing device transportable with a transport is.
  • At least two working positions are present.
  • the mixer system according to the invention works advantageous if, as is common in today's fiberboard manufacturing plants, a large throughput of fibers must be provided with a binder.
  • the high throughput usually requires higher speeds and both together causes the mixing chamber and the mixer shaft with their mixing tools must be examined more frequently for wear.
  • the creation of a separate maintenance position understandably makes more sense the more work mixing devices are in use.
  • the means of transport is formed by at least one rail vehicle, which is movable under the mixing device.
  • the rail vehicle is equipped with a lifting element and / or the mixing device with a lowering device.
  • the mixing device can be placed particularly gently on the loading surface of the rail vehicle.
  • rails have proven at ground level with very flat dolly, as they are sold by the company Strothmann Machines & Handling GmbH in Sch true Holte-Stukenbrock.
  • the maintenance position is in a different space than the working positions.
  • a couplable drive for the mixing device is provided in the maintenance position.
  • the mixing device can be driven experimentally during repair work.
  • balancing operations can be conveniently performed.
  • the mixing chamber of the mixing device comprises two connectable half-shells, which are supported in an upper frame part and a lower frame part. This is particularly the case when the upper frame part and the lower frame part are connected to each other via a hinge and that the respective
  • 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 upper and the lower frame part which may be formed, for example, similarly to a receiving tray for the half-shells, can then be opened with the half-shells. 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.
  • cooling channels are arranged on the outer peripheral surface of the mixing chamber.
  • a cooling channel is formed of at least one coolant channel leading first channel portion, a deflection and at least one immediately adjacent returning second channel portion, wherein the channel portions are formed from semi-finished products
  • a part of a cooling channel is formed by the outer peripheral surface of the mixing chamber and if a cooling channel is releasably secured on the outer peripheral surface of the mixing chamber.
  • the mixing chamber can be cooled in this way simply and effectively, 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 with the same and maintained or replaced.
  • cooling channels consist of semifinished products, that is to say, for example, of tubes, profiles or bent metal sheets, this allows an inexpensive and rapid production of the mixing device and in particular of the mixing chamber or a half shell.
  • cooling channels are arranged meander-shaped on the outer peripheral surface of the mixing chamber.
  • This can be, for example, two independent cooling circuits, one on each half shell.
  • cooling channels are detachably connected to the mixing chamber, maintenance in the maintenance position is simplified because these units made of semi-finished products can be replaced quickly.
  • the mixer shaft has partially covered grooves in which movable sliding blocks are arranged, the can be connected with a mixing or conveying tool.
  • the mixer shaft according to the invention is provided with partially covered grooves in which a sliding block can be moved, which receives a tool.
  • partially covered grooves are therefore to be understood grooves having an opening width to one end of a tool
  • these mixing or conveying tools are also formed in the context of this invention without binder feed, ie 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.
  • Residues in the mixing chamber can be satisfactorily removed in the maintenance position.
  • 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.
  • the mixing tools in the middle axial length range of the mixer shaft, 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.
  • FIG. 1 shows a mixing device of the invention in the closed state in a perspective view
  • FIG. 2 is 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
  • Fig. 5 is a plan view of a mixer system in the context of the invention.
  • a mixing apparatus 101 for continuous mixing of fibers with a binder for fiber board Fier ein 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 mixed with the binder attached to the rotating mixer shaft 2 mixer tools 3 with a binder and at the same time promoted 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
  • 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.
  • 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, fed via the feed tubes 5.
  • the fibers are transported by means of the mixing tools 3 along the longitudinal direction and thereby brought via the centrifugal acceleration in the outer region and thus accelerated in the region of the mixer wall 6.
  • 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 rotational speed n of the mixer shaft is preferably 2000 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 well on the jacket 6 and the inner wall of the mixer. 1
  • FIG. 2 shows in a special way the structure of the mixing device 101. Essentially, 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 flared shell 11 and a lower flared shell 12, can be inserted into the shell-shaped framework parts 16, 17, but can also be removed for quick maintenance.
  • the shrouds 11, 12 are preferably bent from a sheet and heat treated. If the mixing chamber 1 is likewise split open with the pouring or unfolding process, the mixer shaft 2 with its mixing tools 3 is freely accessible in a maintenance-friendly manner.
  • the upper Flalbschale 11 or the lower Flalbschale 12 of the mixing chamber of the respective scaffolding half removed and replaced completely if too much wear.
  • 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
  • each case 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. This ensures that on the spines 8 not only a perfect mixing of the fibers with the binder takes place, but that at the same time a perfect transport of the mixture is ensured with high throughput.
  • 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 also shows that the region of the mixer shaft 2 assigned to the loading opening 4 is designed to be free of spikes, wherein conveying tools 9 are fastened to the mixer shaft 2 in this feed region.
  • conveying tools are paddle-shaped as starting tools or starting paddles. They 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 formed as a hollow shaft and the spikes are also designed as a binder feed tubes, which are connected to the mixer shaft.
  • 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 in this embodiment a plurality of longitudinally arranged T-slots, ie grooves 20 which are partially covered.
  • the shape of the groove 20 may differ within the scope of the invention and, for example, be dovetailed.
  • sliding blocks 21 are slidably inserted, which are provided with a threaded hole.
  • 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 preferably water cooled. These are on the
  • the semifinished products are pipes, pipe sections or beveled metal sheets which are adhesively bonded to the outer circumference of the mixing chamber 1, welded on or screwed on using interposed seals.
  • the heat transfer is significantly improved.
  • An exemplary screw connection 35 of bent metal sheets 26 with the mixing chamber 1, which together with a part of the surface 30 of the mixing chamber form a 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.
  • the spikes or pins are designed as wear-resistant spikes or pins, and the inner walls of the mixing chamber 1 wear-resistant, z.
  • B armored with abrasion resistant coatings be formed.
  • a surfacing weld 33 having a surface hardness of> 600 HV or silicon carbide tiles 32 is suitable here.
  • FIG. 5 shows an entire mixer system 100, by way of example for a large rice straw plant.
  • the mixing devices are particularly at risk because the fibers to be mixed with binders are still very abrasive.
  • the mixing devices are particularly at risk because the fibers to be mixed with binders are still very abrasive.
  • the mixing devices 101 working positions 41.1, 41.2, 41.3, 41.4 and two maintenance positions 42.1, 42.2. in a separate maintenance room. In both positions, the upper frame part 16 and the upper half shell 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, moved from a working position 41.1, 41.2, 41.3, 41.4 to a maintenance position 42.1, 42.2.
  • 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)
  • Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)

Abstract

L'invention concerne un système mélangeur pourvu d'au moins deux dispositifs de mélange (101) destinés à mélanger en continu des fibres ou des copeaux à un liant pour la fabrication de panneaux de fibres ou de particules. Chaque dispositif de mélange (101) présente au moins une chambre de mélange (1) soutenue par une ossature (15, 16, 17) ainsi que, dans ladite chambre, plusieurs outils de mélange ou de transport (3, 8, 9, 10) fixés à un arbre (2) du mélangeur. L'objet de l'invention est de mettre au point un système mélangeur pourvu de dispositifs de mélange pour des fibres et des colles, qui peuvent faire l'objet d'un entretien y compris pendant la production. À cet effet, selon l'invention, le système mélangeur (100) présente au moins une position de travail (41.1, 41.2), dans laquelle un dispositif de mélange (101) effectue le processus de mélange pendant le fonctionnement, et au moins une position d'entretien (42.1, 42.2), éloignée de la position de travail (41.1, 41.2), en direction de laquelle un dispositif de mélange (101) peut être transporté au moyen d'un moyen de transport (43).
PCT/EP2019/053565 2018-03-24 2019-02-13 Système mélangeur Ceased WO2019185234A1 (fr)

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DE102018002475.0A DE102018002475A1 (de) 2018-03-24 2018-03-24 Mischersystem

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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
EP0186457A2 (fr) * 1984-12-20 1986-07-02 Monier Limited Mélangeur à turbine
EP2027912A1 (fr) * 2007-08-24 2009-02-25 VOSSCHEMIE GmbH Appareils destinés à la fabrication de mastic prêt à l'emploi par le mélange de composants de liants et de durcisseurs
DE102009057916A1 (de) 2009-05-15 2011-02-24 Siempelkamp Maschinen- Und Anlagenbau Gmbh & Co. Kg Verfahren und Vorrichtung zum kontinuierlichen Mischen von Fasern mit einem Bindemittel
US20170306982A1 (en) * 2016-04-20 2017-10-26 HST Asset Holdings LLC Split Casing Cavitation Generator
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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DE19542663C2 (de) * 1995-11-16 2003-05-15 Wagner Gmbh J Mischvorrichtung

Patent Citations (9)

* Cited by examiner, † Cited by third party
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
EP0186457A2 (fr) * 1984-12-20 1986-07-02 Monier Limited Mélangeur à turbine
EP2027912A1 (fr) * 2007-08-24 2009-02-25 VOSSCHEMIE GmbH Appareils destinés à la fabrication de mastic prêt à l'emploi par le mélange de composants de liants et de durcisseurs
DE102009057916A1 (de) 2009-05-15 2011-02-24 Siempelkamp Maschinen- Und Anlagenbau Gmbh & Co. Kg Verfahren und Vorrichtung zum kontinuierlichen Mischen von Fasern mit einem Bindemittel
DE102009057916B4 (de) 2009-05-15 2015-04-02 Siempelkamp Maschinen- Und Anlagenbau Gmbh Verfahren und Vorrichtung zum kontinuierlichen Mischen von Fasern mit einem Bindemittel
US20170306982A1 (en) * 2016-04-20 2017-10-26 HST Asset Holdings LLC Split Casing Cavitation Generator
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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