EP3765181B1 - Hygienic mixer - Google Patents
Hygienic mixer Download PDFInfo
- Publication number
- EP3765181B1 EP3765181B1 EP19709932.8A EP19709932A EP3765181B1 EP 3765181 B1 EP3765181 B1 EP 3765181B1 EP 19709932 A EP19709932 A EP 19709932A EP 3765181 B1 EP3765181 B1 EP 3765181B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- mixer
- mixing
- mixing container
- axis
- cover
- 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.)
- Active
Links
- 238000002156 mixing Methods 0.000 claims description 225
- 239000000463 material Substances 0.000 claims description 22
- 239000000314 lubricant Substances 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 description 7
- 238000013461 design Methods 0.000 description 5
- 239000000203 mixture Substances 0.000 description 4
- 239000013013 elastic material Substances 0.000 description 3
- 238000007689 inspection Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 239000003814 drug Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 241000446313 Lamella Species 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000012864 cross contamination Methods 0.000 description 1
- 238000007580 dry-mixing Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Images
Classifications
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- 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
- B01F35/145—Washing or cleaning mixers not provided for in other groups in this subclass; Inhibiting build-up of material on machine parts using other means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F29/00—Mixers with rotating receptacles
- B01F29/40—Parts or components, e.g. receptacles, feeding or discharging means
- B01F29/403—Disposition of the rotor axis
- B01F29/4032—Disposition of the rotor axis vertical
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F29/00—Mixers with rotating receptacles
- B01F29/40—Parts or components, e.g. receptacles, feeding or discharging means
- B01F29/403—Disposition of the rotor axis
- B01F29/4033—Disposition of the rotor axis inclined
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F29/00—Mixers with rotating receptacles
- B01F29/40—Parts or components, e.g. receptacles, feeding or discharging means
- B01F29/403—Disposition of the rotor axis
- B01F29/4034—Disposition of the rotor axis variable, e.g. tiltable during the operation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F29/00—Mixers with rotating receptacles
- B01F29/60—Mixers with rotating receptacles rotating about a horizontal or inclined axis, e.g. drum mixers
- B01F29/64—Mixers with rotating receptacles rotating about a horizontal or inclined axis, e.g. drum mixers with stirring devices moving in relation to the receptacle, e.g. rotating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F29/00—Mixers with rotating receptacles
- B01F29/80—Mixers with rotating receptacles rotating about a substantially vertical axis
- B01F29/82—Mixers with rotating receptacles rotating about a substantially vertical axis the receptacle comprising a rotary part, e.g. the bottom, and a stationary part, e.g. the wall, with optional use of a stirrer; the receptacle comprising parts moving in opposite directions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F29/00—Mixers with rotating receptacles
- B01F29/80—Mixers with rotating receptacles rotating about a substantially vertical axis
- B01F29/83—Mixers with rotating receptacles rotating about a substantially vertical axis with rotary paddles or arms, e.g. movable out of the 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
- B01F35/45—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
- B01F35/75—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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
- B01F2101/06—Mixing of food ingredients
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
- B01F2101/22—Mixing of ingredients for pharmaceutical or medical compositions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F2215/00—Auxiliary or complementary information in relation with mixing
- B01F2215/04—Technical information in relation with mixing
- B01F2215/0413—Numerical information
- B01F2215/0418—Geometrical information
- B01F2215/0422—Numerical values of angles
Definitions
- the present invention relates to a mixing device, in particular a hygiene mixing device for the production of food products and pharmaceuticals.
- the mixing device has a mixing container for receiving material to be mixed and a mixer lid which can close a mixer opening of the mixing container, the mixing container being rotatably mounted relative to the mixer lid in the closed position.
- Such mixing devices also mostly have a rotatable mixing tool in the interior of the mixing container.
- a mixing device generally to mix the material to be mixed in a mixing container as well as possible. Often, however, there are certain points within the mixing container at which mixed material collects and possibly sticks during mixing. Such points, which are usually not directly overflowed by the material to be mixed, are often located on edge surfaces, seals and in particular on the mixer lid which is stationary relative to the mixing container. The mix that has accumulated at these points consequently no longer takes part in the mixing process.
- the mixing container often rotates around an axis of rotation during operation.
- different angles of inclination of the rotating mixing container can enable particularly efficient processing.
- An angle of inclination is understood to mean the angle which the axis of rotation of the rotating mixing container encloses with the vertical.
- an angle of inclination of approx. 20 ° to 30 ° is usually used for the granulation. Due to the inclination of the mixing container, the material to be mixed is exposed to an additional downhill force, This leads to an additional rolling movement of the material to be mixed, which creates particularly spherical granules.
- inclines of approx. 10 ° to 15 ° have again proven to be particularly advantageous in order to achieve efficient and complete mixing and particularly rapid and complete emptying.
- a mixing tool that does not rotate with the mixing container is usually also arranged inside the mixing container.
- the mixing tool preferably rotates about its own axis of rotation, which is mostly arranged at a certain distance from the axis of rotation of the mixing container, parallel to the latter.
- Such a mixing tool is often designed as a mixing shaft.
- the mixing container In areas with high hygiene requirements, such as in the production of foodstuffs and pharmaceuticals, the mixing container must also be completely and tightly closable. Mixing devices therefore usually have a mixer lid in such fields of application [OH1], which can close and seal the mixing container. In order to be able to attach a mixing tool, which should not rotate with the mixing container, to the mixer lid, the mixer lid must therefore also be designed so that it does not rotate with the mixing container during operation.
- Known mixing devices usually have a fixed, predetermined angle of inclination which, if at all, can only be varied with great difficulty and by structural changes to the device.
- the angle of inclination of the mixing container is usually unchangeable after the mixing device has been installed for the first time and, above all, cannot be changed during operation or for cleaning purposes.
- the WO 2016/206625 A1 discloses a mixing device according to the preamble of claim 1 and shows a saucepan which is rotatable about an axis and has a lid.
- the object of the present invention is therefore to provide a mixing device whose angle of inclination can be set particularly easily by the user and which can be cleaned and inspected particularly easily by the user.
- the mixing device has a mixing container rotatable about a first axis of rotation for receiving mixed material.
- This mixing container has a mixer opening, a mixer lid being provided which can be moved back and forth between an open position and a closed position. In the closed position the mixer cover closes the mixer opening and in the open position the mixer cover releases the mixer opening.
- the mixing device has a machine stand in which the mixing container is rotatably or pivotably mounted. The mixer lid is attached to the machine stand in such a way that it does not have to rotate with the mixing container when the mixing container is rotated during operation in the closed position.
- the machine stand has a stationary element and a swivel element.
- the pivot element is mounted pivotably about a pivot axis relative to the stationary element and the mixing container is mounted rotatably on the pivot element, the mixer cover being fastened to the pivot element.
- a sliding seal is preferably arranged between the mixer lid and the mixing container - in a closed position of the mixer lid - so that the mixer lid can close the mixing container tightly in spite of the relative rotational movement of the mixing container.
- the user can set a desired angle of inclination by pivoting the pivot element about the pivot axis.
- the user can increase the accessibility to areas of the mixing device that are normally inaccessible or difficult to access, which simplifies the cleaning and inspection of the mixing device.
- the pivot axis runs through the mixing container.
- a mixing container is generally a container with a cylindrical outer wall, an essentially circular container base and a circular mixing container opening opposite the container base.
- the pivot axis preferably runs through the third of the mixing container which - in relation to the extension of the mixing container along the axis of rotation - is closest to the mixer opening.
- the swivel element can be swiveled with respect to the swivel axis by at least up to 90 °, preferably at least by up to 180 ° and particularly preferably by up to 360 °.
- the swivel range of 90 ° generally makes it possible, on the one hand, to set the inclination angles common for mixing operation and, on the other hand, to swivel the mixing container in such a way that cleaning and inspection of the interior of the container is simplified.
- the mixing container can be pivoted from a vertical to a horizontal position - that is to say by 90 ° - cleaning and inspection of the interior is particularly easy in the horizontal position.
- the accessibility of the swivel element increases. If, in this case, the mixing container can be pivoted from a substantially vertical position into an opposite vertical position, then on the other hand the mixer opening can be used for emptying the mixing container using gravity.
- a swivel range of 360 ° offers all of the aforementioned advantages and enables comprehensive accessibility of the swivel element and thus all assemblies of the mixing device regardless of the location and positioning of the mixing device, which is extremely advantageous, for example, for cleaning and maintenance work.
- first axis of rotation and the pivot axis are arranged perpendicular to one another, wherein they preferably intersect at one point.
- This measure also leads to a compact design and to a reduction in the necessary swivel space.
- the mixer opening is circular and the mixing container is rotationally symmetrical with respect to the first axis of rotation, specifically preferably at least partially cylindrical and / or conical.
- Preferred embodiments have, in particular, cylindrical mixing containers with a flat bottom or conical, cylindrical or cylindrical-conical mixing containers with flat or convex or concave bottoms, for example dished bottoms.
- the rotationally symmetrical design of the mixing container means that it can be rotated very easily.
- the circular design of the mixer opening also facilitates the storage and sealing of the mixer cover with respect to the mixing container, because the mixer cover does not rotate with the mixing container when the mixer cover is in a closed position.
- the mixing container has a flange.
- This flange has a surface facing the mixer opening and a surface facing away from the mixer opening and is usually located on the outer wall of the mixing container.
- the flange particularly preferably completely encloses the outer wall of the mixing container.
- a pivot bearing is provided, which preferably connects the surface of the flange, which points in a direction facing away from the mixer opening, to the pivot element.
- the mixing container is rotatably mounted about the first axis of rotation via this pivot bearing.
- the pivot bearing can be designed as a ball bearing, for example.
- this mounting can in principle be attached to any position of the mixing container with respect to the axis of rotation.
- a flange has been shown to be particularly advantageous which, with respect to the axis of rotation, is attached in the third of the mixing container that is closest to the mixer opening.
- the rotary bearing via a flange also has the advantage that there is no need for a rotary bearing on the bottom of the mixing container, as is often found in other mixing devices.
- the bottom of the mixing container is therefore in principle freely accessible from below and can, for example, be provided with a double jacket for cooling the mixing container or mixed material with concentric liquid supply and discharge via the first axis of rotation or with an emptying opening.
- the emptying opening is preferably smaller than the mixer opening.
- the attachment of the pivot bearing to the surface of the flange facing away from the mixer opening also effects a first shielding of the pivot bearing from the mixer opening. This prevents lubricant, for example grease or oil, which is used to lubricate the pivot bearing and / or the associated drive, from reaching the mixer opening during operation.
- the pivot bearing can also be attached to the other surfaces of a flange, in particular also to the surface facing the mixing container opening. This can be advantageous, for example, if attachment to the surface facing away from the mixer opening is not possible due to a lack of space due to the design.
- the rotary bearing is surrounded by a housing (oil-tight or lubricant-tight housing) which is tight against the outlet of lubricant.
- the housing can have seals at the interfaces to the swivel element or to the mixing container, which seal the pivot bearing from the outside space.
- the housing can, for example, also be formed by corresponding designs of the flange and the pivot element and by seals arranged between the individual elements.
- the mixer cover has a mixing element (mixing tool), preferably a mixer shaft, which is mounted rotatably relative to the mixer cover with respect to a second axis of rotation.
- This mixing element is designed and arranged on the mixer lid in such a way that it is located inside the mixing container when the mixer lid is in a closed position, the second axis of rotation preferably being parallel and particularly preferably parallel but not identical to the first axis of rotation.
- the speed of rotation of the mixing element can be selected independently of the speed of rotation of the mixing container.
- a stripping element or a stripping device can also be arranged on the mixer lid in such a way that it is located within the mixing container when the mixer lid is in a closed position.
- the longitudinal direction of the stripping element preferably extends parallel to the inner wall of the mixing container.
- the stripping element (and also the mixing element) has lamellae made of an elastic material, which are in contact with the inside of the mixing container (including the inner wall and bottom) when the mixer lid is in a closed position.
- the stripping element is movable relative to the mixing container, the stripping element preferably being rigidly connected to the non-rotating mixer lid and the mixing container moving relative to the stripping element during operation due to the rotation of the mixing container.
- a mixing and / or stripping element of the type described brings about a more thorough mixing of the material to be mixed. Since the mixing and stripping element is attached to the mixer lid, it does not rotate with the mixing container even during operation. The mix in the mixing container is therefore moved relative to the mixing container by the rotation of the mixing container. and stripping element offset. This alone already causes a thorough mixing. If the mixing element is now set in rotation with respect to the second axis of rotation, a second superimposed mixing movement is added, which significantly improves the efficiency of the mixing device.
- the mixing and stripping element Due to the attachment of the mixing and stripping element to the mixer lid, the mixing and stripping element is given away with a pivoting movement.
- the lamellae described above sweep over parts of the inside of the mixing container and thereby additionally ensure that no residues of the mixed material form on the inside of the mixing container. It is particularly preferred that the stripping element sweeps over the entire height of the inner wall and at least the radially outer part of the mixing container base.
- the rotation of the mixing element is usually generated by a drive that is also arranged on the mixer lid.
- the drive is located on the side of the mixer cover facing away from the mixer opening and drives a mixer shaft which, when the mixer cover is in a closed position, protrudes through the mixer cover into the mixing container.
- the pivot element has a holding frame with a rotary bearing for mounting the mixing container and at least one, preferably two, shaft sections connected to the holding frame on opposite sides of the holding frame.
- the holding frame is designed in such a way that it at least partially surrounds the mixing container.
- the stationary element also has one or two pivot bearings in which the shaft section or the shaft sections of the holding frame is or are each pivotably mounted. Alternatively, the pivot bearings can also be arranged on the holding frame and the shaft sections on the stationary element.
- the pivot element is designed to be particularly simple and material-saving.
- the holding frame can in particular also be constructed as an annular element so that it can be connected to a circular flange located on the mixing container via a pivot bearing.
- the mixing device is provided with a hydraulic or pneumatic device which is connected both to the stationary element and to the pivoting element.
- the hydraulic or pneumatic device for example a hydraulic piston drive, is provided to drive the pivoting element to pivot about the pivot axis. With it either a desired angle of inclination can be set or a continuous pivoting movement, for example a pendulum movement, can be driven.
- a hydraulic or pneumatic drive for controlling the pivoting movement has proven to be advantageous. It represents a stable and inexpensive way of driving the pivoting movement.
- the pivoting element can also be fixed simply and stably with a hydraulic or pneumatic device with a desired deflection - that is, with a desired angle of inclination of the mixing container.
- a hydraulic or pneumatic device with a desired deflection - that is, with a desired angle of inclination of the mixing container.
- one or more geared motors or other known drive systems for generating a rotary or pivoting movement can also be used to execute the pivoting movement.
- the mixer lid is hinged opposite the mixer opening, with a drive, e.g. a geared motor, and particularly preferably a hydraulic or pneumatic device being arranged on the pivot element, which is provided for moving the mixer lid between the closed and open positions and move forward.
- a drive e.g. a geared motor, and particularly preferably a hydraulic or pneumatic device being arranged on the pivot element, which is provided for moving the mixer lid between the closed and open positions and move forward.
- a hinged mixer lid is extremely advantageous for the user, since a single movement is often sufficient to fit the lid onto the mixing container and to close the mixer opening. A complex adjustment of the mixer lid when closing the mixing container is therefore not necessary. If the hinged locking mechanism is also equipped with a drive, a push of a button is usually sufficient to open and close the mixer lid. Other solutions, such as a mixer lid attached to a gripping arm, are also conceivable, but would result in higher positioning, control and cost expenditure with regard to the closing. In addition, the cover would have to be locked using a force-fit and form-fit connection, e.g. by means of a screw.
- the drive for folding the lid can also be used for continuous safe locking of the mixer lid in the closed state while the mixer is in operation, e.g. by maintaining the pressure or voltage continuously .
- the mixing container has a closable emptying opening which is arranged and designed in such a way that the first axis of rotation runs through the emptying opening, particularly preferably runs centrally.
- an emptying lid is provided which can be moved back and forth between an open position and a closed position, the emptying lid closing the emptying opening in the closed position and releasing the emptying opening in the open position.
- Such an emptying opening has the advantage that the mixing container does not have to be pivoted for emptying in order to empty it via the mixer opening.
- the emptying opening can be arranged, for example, above a conveyor belt, so that the ready-mixed material can be discharged immediately via the emptying opening and transported further on the conveyor belt.
- the mixing device has a drive which is attached to the pivot element and is provided for moving the emptying cover back and forth between the closed and open position.
- the emptying lid is arranged on the mixing container in such a way that the emptying lid can be rotated together with the mixing container relative to the pivoting element about the first axis of rotation.
- the emptying cover is preferably designed as a segmented ball valve.
- the arrangement of the drive on the swivel element is also particularly advantageous because the drive is subject to a swivel movement of the swivel element, but not to the rotary movement of the mixing container. This makes assembly and energy supply, in particular the cabling of the drive, significantly easier.
- the emptying cover can be designed as a segmented ball valve and the drive as a linear drive, e.g. as a hydraulic or pneumatic piston drive.
- the linear movement of the piston is then converted into a rotary movement of a spherical segment, which is designed as a spherical segment of the spherical segment valve, via a cam disk that rotates with the mixing container, so that the rotation of the spherical segment in one direction causes the emptying opening to close and in the other direction to open .
- Figure 1 a sectional view of the mixing container 2 and the components of the mixing device 1 adjoining the mixing container 2 are shown.
- the mixing container 2 is located in this Fall in a vertical position, that is, at an angle of inclination of 0 °.
- the mixer opening 4 is located at the upper end and the emptying opening 5 is located at the lower end of the mixing container 2.
- the mixer opening 4 is closed by the mixer cover 6 in this illustration.
- Figure 1 accordingly shows part of the mixing device 1 with the mixer lid 6 in a closed position.
- the emptying opening 5 is also closed by the emptying lid 7. Accordingly, it is also a representation of the closed position of the emptying cover 7.
- the emptying cover 7 shown here is designed as a segmented ball valve which is arranged on the mixing container 2 and rotates with it during operation.
- the emptying cover 7 is composed of two partial spherical segments 32 'and 32 "(not explicitly shown), each of which can be pivoted by a linear movement of the respective hydraulic piston drives 33' and 33".
- the hydraulic piston drives 33 'and 33 "do not rotate with the mixing container 2 during operation.
- the emptying cover 7 can consequently be moved from an open to a closed position or from a closed to an open position .
- the corresponding "second" pivot axis about which the pivoting of the emptying cover 7 takes place is preferably perpendicular to the first axis of rotation 18 and rotates with the mixing container 2.
- the mixing container 2 has a flange 9.
- a ball bearing 10 is arranged on the side / surface of the flange 9 facing away from the mixer opening 4.
- the flange 9 is connected to a seal 30 and to a first ball bearing rail 28 ', which in turn is rotatably supported by a ball element 29 with respect to a second ball bearing rail 28 ".
- the second ball bearing rail 28" is attached to a holding frame of the pivot element 8, which as Part of the pivot element is formed.
- the ball bearing 10 is surrounded by the holding frame of the pivot element 8, the flange 9 and the seal 30 in such a way that the entirety of these components 8, 9 and 30 delimit the ball bearing oil-tight, more precisely lubricant-tight, from the exterior.
- the entirety of the components 8, 9 and 30 therefore forms a lubricant-tight housing 27.
- the ball bearing 10 is set in motion via the drive 11, as a result of which the rotation of the mixing container about the first axis of rotation 18 is driven.
- the in Figure 1 The mixer lid 6 shown rests against the mixer opening 4 via a seal 26 on the edge surfaces of the mixing container 2.
- the seal 26 is a sliding seal.
- the mixer lid 6 is also mounted via a hinge 21 which can be actuated via a hydraulic device 12. This causes a back and forth movement between an open and closed position of the mixer lid 6.
- the hydraulic device 12 is on the one hand connected to the mixer cover 6 (the hinge 21 of the mixer cover 6) and on the other hand connected to the holding frame of the pivot element 8. With a pivoting movement of the pivoting element 8, the hydraulic device 12 together with the mixer cover 6 therefore performs the same pivoting movement as the pivoting element 8.
- a mixer shaft 3 which protrudes into the interior of the mixing container 2, is arranged on the mixer cover 6.
- the mixer shaft can be set in rotation about the second axis of rotation 19 via the drive 13, which is also arranged on the mixer cover.
- wings 14 and floor scrapers 15 are attached to mixer shaft 3.
- the blades 14 bring about an efficient thorough mixing of the material to be mixed when the mixing device 1 is in operation.
- the floor scrapers 15 end in the vicinity of the mixing container bottom 31 and are designed in such a way that, when the mixing device 1 is in operation, the floor scrapers 15 sweep over the mixing container bottom 31, so that mixed material that has accumulated on the mixing container bottom 31 is detached from the mixing container bottom 31 without the floor scraper 15 being swept over Damage to the mixing container bottom 31 occurs.
- the floor scrapers 15 can be designed as lamellas made of an elastic material or also of a rigid material such as a plastic.
- FIG 2 a sectional view of the entire mixing device 1 is shown.
- the first axis of rotation 18, the second axis of rotation 19 and the pivot axis 20 are shown in this illustration.
- the first axis of rotation 18 and the second axis of rotation 19 are arranged parallel to one another but spaced apart. This is also referred to as an asymmetrical arrangement of the mixer shaft 3.
- the overhung stripping device 22, which extends along the mixing container wall to the mixing container base 31, is firmly connected to the mixer lid 6. When the mixing container 2 rotates about the first axis of rotation 18, this rotational movement alone causes the mix to flow onto the mixer shaft 3 and the stripping device 22.
- the blades 14 of the mixer shaft 3 as well as the stripping device 22 therefore cause this relative movement alone a thorough mixing, even if the mixer shaft 3 itself does not rotate. If, however, a rotation of the mixer shaft 3 about the second axis of rotation 19 is driven, an additional thorough mixing of the material to be mixed is effected.
- the bottom scrapers 15 can be arranged and designed in such a way that after a certain number of revolutions of the mixing container 2 and a certain number of revolutions of the mixer shaft 3, a bottom scraper 15 sweeps over each point of the mixing container bottom 31 at least once.
- Figure 2 also shows the machine stand 16.
- this consists of two stands arranged on two opposite sides of the pivot element 8, in each of which a pivot bearing 17 is arranged.
- the pivot element 8 is thus mounted pivotably about the pivot axis 20 via the pivot bearing 17.
- the pivot axis 20 is arranged perpendicular to the first axis of rotation 18 and consequently also perpendicular to the second axis of rotation 19.
- a material transfer 25 is shown, which is arranged in the lower region of the pivot element and adjoins the emptying opening 5 of the mixing container 2. Mixture that has been appropriately mixed in the mixing container 2 can thus be drained into the material transfer line 25 via the emptying opening 5 and transferred from there, for example, to a conveyor belt.
- FIG 3 a perspective view of the entire mixing device 1 is shown.
- the mixing device 1 is shown with the mixer cover 6 in an open position.
- the mixing container 2 is inclined by an angle of inclination of approximately 20 °, since the pivot element is pivoted by approximately 20 ° in the direction facing the viewer. It can be seen from this illustration that the angle of inclination can be adjusted easily and to any desired extent by pivoting about the pivot axis.
- the hinged mixer lid 6 is in Figure 3 opened in such a way that the mixer shaft 3 is arranged outside the mixing container 1 and the mixer opening 4 is completely visible. Due to the hinged mounting of the mixer cover 6 via the hinge 21, the mixer cover 6 can easily be opened and closed. This mechanism is in Figure 3 particularly easy to recognize.
- the stripping device 22 can be seen, which is also attached to the mixer lid 6. Like the mixer shaft 3, it does not rotate with the mixing container 2 when it rotates and protrudes into the mixing container 2 when the mixer lid 6 is in a closed position.
- the stripping device 22 has, for example, a rail made of an elastic material, which is in contact with the lateral inner wall of the mixing container 2 when the mixer lid 6 is in a closed position.
- the drive 24 for the pivoting movement of the pivoting element is visible in the machine stand 16 on the side facing the viewer.
- the accessibility of the drive with regard to maintenance work is given by the doors 23 (partially hidden) of the machine stand 16.
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mixers Of The Rotary Stirring Type (AREA)
- Accessories For Mixers (AREA)
- Mixers With Rotating Receptacles And Mixers With Vibration Mechanisms (AREA)
- Food-Manufacturing Devices (AREA)
Description
Die vorliegende Erfindung betrifft eine Mischvorrichtung, insbesondere eine Hygiene-Mischvorrichtung zur Herstellung von Lebensmittelprodukten und Pharmazeutika. Die Mischvorrichtung weist einen Mischbehälter zur Aufnahme von Mischgut sowie einen Mischerdeckel auf, der eine Mischeröffnung des Mischbehälters verschließen kann, wobei der Mischbehälter in der geschlossenen Position drehbar gegenüber dem Mischerdeckel gelagert ist. Solche Mischvorrichtungen weisen außerdem zumeist im Inneren des Mischbehälters ein drehbares Mischwerkzeug auf.The present invention relates to a mixing device, in particular a hygiene mixing device for the production of food products and pharmaceuticals. The mixing device has a mixing container for receiving material to be mixed and a mixer lid which can close a mixer opening of the mixing container, the mixing container being rotatably mounted relative to the mixer lid in the closed position. Such mixing devices also mostly have a rotatable mixing tool in the interior of the mixing container.
Der Sinn und Zweck einer Mischvorrichtung besteht im Allgemeinen darin, das in einem Mischbehälter befindliche Mischgut bestmöglich zu durchmischen. Häufig existieren allerdings bestimmte Stellen innerhalb des Mischbehälters, an denen sich Mischgut während der Durchmischung ansammelt und ggf. festsetzt. Solche, in der Regel nicht von Mischgut direkt überströmten Stellen befinden sich oft an Kantenflächen, Dichtungen und insbesondere am relativ zum Mischbehälter stillstehenden Mischerdeckel. Das an diesen Stellen angesammelte Mischgut nimmt folglich nicht mehr am Durchmischungsprozess teil.The purpose of a mixing device is generally to mix the material to be mixed in a mixing container as well as possible. Often, however, there are certain points within the mixing container at which mixed material collects and possibly sticks during mixing. Such points, which are usually not directly overflowed by the material to be mixed, are often located on edge surfaces, seals and in particular on the mixer lid which is stationary relative to the mixing container. The mix that has accumulated at these points consequently no longer takes part in the mixing process.
Zudem können durch das Anhaften des Mischguts an nicht überströmten oder bewegten Stellen Rückstände entstehen, die beim Entleeren des Mischbehälters im Mischbehälter zurückbleiben. Dadurch entsteht ein erhöhtes Kontaminationsrisiko nachfolgender Chargen durch bspw. wachsende Bakterienkulturen oder Cross-Kontamination bei Produktwechsel, was einen höheren Reinigungs- und folglich auch ein höherer Kostenaufwand beim Herstellungsprozess eines Produktes nach sich zieht.In addition, if the material to be mixed adheres to areas that are not overflowed or moved, residues can arise that remain in the mixing container when the mixing container is emptied. This results in an increased risk of contamination of subsequent batches through, for example, growing bacterial cultures or cross-contamination when changing products, which entails higher cleaning and consequently higher costs in the manufacturing process of a product.
Häufig rotiert der Mischbehälter im Betrieb um eine Rotationsachse. Abhängig von dem im Mischbehälter durchgeführten Aufbereitungsverfahren wie bspw. Trockenmischen, Granulieren oder Suspendieren können dabei unterschiedliche Neigungswinkel des rotierenden Mischbehälters eine besonders effiziente Aufbereitung ermöglichen. Unter einem Neigungswinkel wird der Winkel verstanden, den die Rotationsachse des rotierenden Mischbehälters mit der Vertikalen einschließt.The mixing container often rotates around an axis of rotation during operation. Depending on the processing method carried out in the mixing container, such as dry mixing, granulating or suspending, different angles of inclination of the rotating mixing container can enable particularly efficient processing. An angle of inclination is understood to mean the angle which the axis of rotation of the rotating mixing container encloses with the vertical.
So wird für die Granulierung zumeist ein Neigungswinkel von ca. 20° bis 30° verwendet. Durch die Neigung des Mischbehälters ist das Mischgut einer zusätzlichen Hangabtriebskraft ausgesetzt, wodurch es zu einer zusätzlichen Abrollbewegung des Mischguts kommt, was besonders sphärische Granulate erzeugt. Bei der Aufbereitung von dünnflüssigen Suspensionen wiederum ist eine horizontale oder nur um wenige Grad (< 5°) geneigte Ausrichtung des Mischbehälters notwendig, um eine Aufstauung von Flüssigkeit am tiefsten Punkt des Mischbehälters zu vermeiden. Bei Trockenmischungen haben sich wiederum Neigungen von ca. 10° bis 15° als besonders vorteilhaft herausgestellt, um eine effiziente und vollständige Durchmischung sowie besonders schnelle und vollständige Entleerung zu erreichen.For example, an angle of inclination of approx. 20 ° to 30 ° is usually used for the granulation. Due to the inclination of the mixing container, the material to be mixed is exposed to an additional downhill force, This leads to an additional rolling movement of the material to be mixed, which creates particularly spherical granules. When preparing thin-bodied suspensions, it is necessary to align the mixing container horizontally or at an angle of just a few degrees (<5 °) in order to avoid a build-up of liquid at the lowest point of the mixing container. In the case of dry mixes, inclines of approx. 10 ° to 15 ° have again proven to be particularly advantageous in order to achieve efficient and complete mixing and particularly rapid and complete emptying.
Zur weiteren Verbesserung des Durchmischungsgrades wird in der Regel zusätzlich ein Mischwerkzeug innerhalb des Mischbehälters angeordnet, das nicht mit dem Mischbehälter mitrotiert. Das Mischwerkzeug rotiert aber vorzugsweise um eine eigene Rotationsachse, die zumeist in einem gewissen Abstand zur Rotationsachse des Mischbehälters parallel zu dieser angeordnet ist. Ein solches Mischwerkzeug ist häufig als Mischwelle ausgebildet.To further improve the degree of mixing, a mixing tool that does not rotate with the mixing container is usually also arranged inside the mixing container. However, the mixing tool preferably rotates about its own axis of rotation, which is mostly arranged at a certain distance from the axis of rotation of the mixing container, parallel to the latter. Such a mixing tool is often designed as a mixing shaft.
In Bereichen mit hohen Hygieneanforderungen, wie beispielsweise bei der Lebensmittel- und Pharmazeutika Herstellung, muss der Mischbehälter zudem vollständig und dicht verschließbar sein. Daher verfügen Mischvorrichtung auf solchen Anwendungsfeldern in der Regel über einen Mischerdeckel[OH1], der den Mischbehälter verschließen und abdichten kann. Um die Möglichkeit zu besitzen, ein Mischwerkzeug, das nicht mit dem Mischbehälter mitrotieren soll, an dem Mischerdeckel befestigen zu können, muss der Mischerdeckel daher ebenfalls so ausgebildet sein, dass er während des Betriebes nicht mit dem Mischbehälter mitrotiert.In areas with high hygiene requirements, such as in the production of foodstuffs and pharmaceuticals, the mixing container must also be completely and tightly closable. Mixing devices therefore usually have a mixer lid in such fields of application [OH1], which can close and seal the mixing container. In order to be able to attach a mixing tool, which should not rotate with the mixing container, to the mixer lid, the mixer lid must therefore also be designed so that it does not rotate with the mixing container during operation.
Aus der
Bekannte Mischvorrichtungen weisen zumeist einen fest vorgegebenen Neigungswinkel auf, der wenn überhaupt nur sehr umständlich und durch bauliche Veränderungen der Vorrichtung variiert werden kann. Dies hat zur Folge, dass der Neigungswinkel des Mischbehälters nach erstmaliger Installation der Mischvorrichtung in der Regel unveränderbar ist und vor allem nicht während des Betriebes oder für Reinigungszwecke verändert werden kann.Known mixing devices usually have a fixed, predetermined angle of inclination which, if at all, can only be varied with great difficulty and by structural changes to the device. As a result, the angle of inclination of the mixing container is usually unchangeable after the mixing device has been installed for the first time and, above all, cannot be changed during operation or for cleaning purposes.
Es hat sich in der Praxis allerdings gezeigt, dass bekannte Mischvorrichtungen nur äußerst schwierig und umständlich gereinigt und inspiziert werden können. Insbesondere auf Anwendungsfeldern mit hohen Hygieneanforderungen ist es außerdem besonders wichtig, dass möglichst alle Bereiche der Mischvorrichtung für den Anwender einsehbar und zur Reinigung gut und leicht erreichbar sind. Dies ermöglicht keine der aus dem Stand der Technik bekannten Mischvorrichtungen.However, it has been shown in practice that known mixing devices can only be cleaned and inspected with great difficulty and with great effort. In particular in areas of application with high hygiene requirements, it is also particularly important that as many areas as possible the mixing device can be seen by the user and easily accessible for cleaning. None of the mixing devices known from the prior art make this possible.
Die
Die Aufgabe der vorliegenden Erfindung besteht daher darin, eine Mischvorrichtung bereitzustellen, deren Neigungswinkel vom Anwender besonders einfach einzustellen ist und die vom Anwender besonders einfach gereinigt und inspiziert werden kann.The object of the present invention is therefore to provide a mixing device whose angle of inclination can be set particularly easily by the user and which can be cleaned and inspected particularly easily by the user.
Erfindungsgemäß wird diese Aufgabe durch eine Mischvorrichtung mit den Merkmalen des Anspruchs 1 gelöst.According to the invention, this object is achieved by a mixing device having the features of
Die erfindungsgemäße Mischvorrichtung weist einen um eine erste Rotationsachse drehbaren Mischbehälter zur Aufnahme von Mischgut auf. Dieser Mischbehälter besitzt eine Mischeröffnung, wobei ein Mischerdeckel vorgesehen ist, der zwischen einer geöffneten Position und einer geschlossenen Position hin und her bewegt werden kann. In der geschlossenen Position verschließt der Mischerdeckel die Mischeröffnung und in der geöffneten Position gibt der Mischerdeckel die Mischeröffnung frei. Zudem verfügt die Mischvorrichtung über einen Maschinenständer, in welchem der Mischbehälter dreh- bzw. schwenkbar gelagert ist. Der Mischerdeckel ist dabei derart an dem Maschinenständer befestigt, dass er bei einer Drehung des Mischbehälters im Betrieb in der geschlossenen Position nicht mit dem Mischbehälter mitrotieren muss. Erfindungsgemäß weist der Maschinenständer ein stationäres Element und ein Schwenkelement auf. Das Schwenkelement ist um eine Schwenkachse relativ zum stationären Element schwenkbar gelagert und der Mischbehälter ist am Schwenkelement drehbar gelagert, wobei der Mischerdeckel am Schwenkelement befestigt ist. Zwischen Mischerdeckel und Mischbehälter ist - in einer geschlossenen Position des Mischerdeckels - bevorzugt eine Gleitdichtung angeordnet, damit der Mischerdeckel trotz der relativen Drehbewegung des Mischbehälters diesen dicht verschließen kann.The mixing device according to the invention has a mixing container rotatable about a first axis of rotation for receiving mixed material. This mixing container has a mixer opening, a mixer lid being provided which can be moved back and forth between an open position and a closed position. In the closed position the mixer cover closes the mixer opening and in the open position the mixer cover releases the mixer opening. In addition, the mixing device has a machine stand in which the mixing container is rotatably or pivotably mounted. The mixer lid is attached to the machine stand in such a way that it does not have to rotate with the mixing container when the mixing container is rotated during operation in the closed position. According to the invention, the machine stand has a stationary element and a swivel element. The pivot element is mounted pivotably about a pivot axis relative to the stationary element and the mixing container is mounted rotatably on the pivot element, the mixer cover being fastened to the pivot element. A sliding seal is preferably arranged between the mixer lid and the mixing container - in a closed position of the mixer lid - so that the mixer lid can close the mixing container tightly in spite of the relative rotational movement of the mixing container.
Mit einer solchen Mischvorrichtung kann der Anwender durch ein Schwenken des Schwenkelements um die Schwenkachse einen gewünschten Neigungswinkel einstellen. Zudem kann der Anwender durch ein Schwenken um die Schwenkachse die Zugänglichkeit zu normalerweise unzugänglichen oder schwer zugänglichen Bereichen der Mischvorrichtung erhöhen, wodurch sich die Reinigung und Inspektion der Mischvorrichtung vereinfacht. Durch die Befestigung des Mischerdeckels am Schwenkelement ist es dabei möglich, den Mischerdeckel mit zu verschwenken, ohne dass er in einer geschlossenen Position bei einer betriebsmäßigen Rotation des Mischbehälters mit dem Mischbehälter mitrotiert.With such a mixing device, the user can set a desired angle of inclination by pivoting the pivot element about the pivot axis. In addition, by pivoting about the pivot axis, the user can increase the accessibility to areas of the mixing device that are normally inaccessible or difficult to access, which simplifies the cleaning and inspection of the mixing device. By attaching the mixer cover to the swivel element, it is possible to swivel the mixer cover with it without it rotating with the mixing container in a closed position during operational rotation of the mixing container.
In einer bevorzugten Ausführungsform verläuft die Schwenkachse durch den Mischbehälter. Bei einem Mischbehälter handelt es sich in der Regel um ein Gefäß mit einer zylinderförmigen Außenwand, einem im Wesentlichen kreisförmigen Gefäßboden und einer dem Gefäßboden gegenüberliegenden kreisförmigen Mischbehälteröffnung. Bei solchen oder ähnlichen Mischbehältern verläuft die Schwenkachse vorzugsweise durch das Drittel des Mischbehälters, das - in Bezug zur Ausdehnung des Mischbehälters entlang der Rotationsachse - der Mischeröffnung am nächsten liegt.In a preferred embodiment, the pivot axis runs through the mixing container. A mixing container is generally a container with a cylindrical outer wall, an essentially circular container base and a circular mixing container opening opposite the container base. In the case of such or similar mixing containers, the pivot axis preferably runs through the third of the mixing container which - in relation to the extension of the mixing container along the axis of rotation - is closest to the mixer opening.
Es hat sich gezeigt, dass eine Lagerung der Schwenkachse mit einem Verlauf durch den Mischbehälter in den meisten Fällen das Trägheitsmoment des Schwenkelements reduziert. Dadurch verringern sich die mechanischen Anforderungen an ein Schwenklager, über die das Schwenkelement gelagert wird. Zudem wird der für den Schwenkvorgang notwendige Schwenkraum verkleinert.It has been shown that mounting the pivot axis with a course through the mixing container reduces the moment of inertia of the pivot element in most cases. This reduces the mechanical requirements placed on a pivot bearing via which the pivot element is supported. In addition, the swivel space required for the swiveling process is reduced.
In einer weiteren bevorzugten Ausführungsform ist das Schwenkelement bezüglich der Schwenkachse mindestens um bis zu 90°, vorzugsweise mindestens um bis zu 180° und besonders bevorzugt um bis zu 360° schwenkbar.In a further preferred embodiment, the swivel element can be swiveled with respect to the swivel axis by at least up to 90 °, preferably at least by up to 180 ° and particularly preferably by up to 360 °.
Der Schwenkbereich von 90° ermöglicht es in der Regel, zum einen die für den Mischbetrieb gängigen Neigungswinkel einzustellen und zum anderen den Mischbehälter derart zu verschwenken, dass eine Reinigung und Inspektion des Behälterinnenraums vereinfacht wird. Insbesondere wenn der Mischbehälter von einer vertikalen in eine horizontale Stellung - sprich um 90° - verschwenkt werden kann, gestaltet sich die Reinigung und Inspektion des Innenraums in der horizontalen Stellung besonders einfach. Bei einem Schwenkbereich von bis zu 180° erhöht sich zum einen die Zugänglichkeit des Schwenkelements. Wenn in diesem Fall der Mischbehälter von einer im Wesentlichen vertikalen Position in eine entgegengesetzte vertikale Position schwenkbar ist, so kann zum anderen die Mischeröffnung zum Entleeren des Mischbehälters unter Verwendung der Schwerkraft verwendet werden. Ein Schwenkbereich von 360° bietet alle der vorgenannten Vorteile und ermöglicht unabhängig von der Lage und Positionierung der Mischvorrichtung eine umfassende Zugänglichkeit des Schwenkelements und damit aller Baugruppen der Mischvorrichtung, was beispielsweise bei Reinigungs- und Wartungsarbeiten äußerst vorteilhaft ist.The swivel range of 90 ° generally makes it possible, on the one hand, to set the inclination angles common for mixing operation and, on the other hand, to swivel the mixing container in such a way that cleaning and inspection of the interior of the container is simplified. In particular, when the mixing container can be pivoted from a vertical to a horizontal position - that is to say by 90 ° - cleaning and inspection of the interior is particularly easy in the horizontal position. With a swivel range of up to 180 °, on the one hand, the accessibility of the swivel element increases. If, in this case, the mixing container can be pivoted from a substantially vertical position into an opposite vertical position, then on the other hand the mixer opening can be used for emptying the mixing container using gravity. A swivel range of 360 ° offers all of the aforementioned advantages and enables comprehensive accessibility of the swivel element and thus all assemblies of the mixing device regardless of the location and positioning of the mixing device, which is extremely advantageous, for example, for cleaning and maintenance work.
In einer besonders bevorzugten Ausführungsform sind die erste Rotationsachse und die Schwenkachse senkrecht zueinander angeordnet, wobei sie sich vorzugsweise in einem Punkt schneiden.In a particularly preferred embodiment, the first axis of rotation and the pivot axis are arranged perpendicular to one another, wherein they preferably intersect at one point.
Auch diese Maßnahme führt zu einer kompakten Bauweise und zu einer Reduktion des notwendigen Schwenkraums.This measure also leads to a compact design and to a reduction in the necessary swivel space.
In einer weiteren Ausführungsform ist die Mischeröffnung kreisförmig ausgebildet und der Mischbehälter bezüglich der ersten Rotationsachse rotationssymmetrisch und zwar vorzugsweise zumindest abschnittsweise zylinderförmig und/oder konusförmig ausgebildet. Bevorzugte Ausführungsformen weisen insbesondere zylinderförmige Mischbehälter mit ebenem Boden oder konische, zylindrische oder zylindrisch-konische Mischbehälter mit ebenen oder konvex oder konkav geformten Böden, z.B. Klöpperböden auf.In a further embodiment, the mixer opening is circular and the mixing container is rotationally symmetrical with respect to the first axis of rotation, specifically preferably at least partially cylindrical and / or conical. Preferred embodiments have, in particular, cylindrical mixing containers with a flat bottom or conical, cylindrical or cylindrical-conical mixing containers with flat or convex or concave bottoms, for example dished bottoms.
Durch eine rotationssymmetrische Ausbildung des Mischbehälters ist dieser sehr einfach drehbar zu lagern. Die kreisförmige Ausbildung der Mischeröffnung erleichtert zudem die Lagerung und Abdichtung des Mischerdeckels gegenüber dem Mischbehälter, weil dieser in einer geschlossenen Position des Mischerdeckels im Betrieb nicht mit dem Mischbehälter mitrotiert.The rotationally symmetrical design of the mixing container means that it can be rotated very easily. The circular design of the mixer opening also facilitates the storage and sealing of the mixer cover with respect to the mixing container, because the mixer cover does not rotate with the mixing container when the mixer cover is in a closed position.
In einer weiteren bevorzugten Ausführungsform weist der Mischbehälter einen Flansch auf. Dieser Flansch besitzt eine der Mischeröffnung zugewandte Fläche und eine der Mischeröffnung abgewandte Fläche und befindet sich in der Regel an der Außenwand des Mischbehälters. Besonders bevorzugt umschließt der Flansch die Außenwand des Mischbehälters vollständig. Zudem ist ein Drehlager vorgesehen, das bevorzugt die Fläche des Flansches, die in eine von der Mischeröffnung abgewandte Richtung zeigt, mit dem Schwenkelement verbindet. Über dieses Drehlager wird der Mischbehälter drehbar um die erste Rotationsachse gelagert. Das Drehlager kann dabei beispielsweise als Kugellager ausgebildet sein.In a further preferred embodiment, the mixing container has a flange. This flange has a surface facing the mixer opening and a surface facing away from the mixer opening and is usually located on the outer wall of the mixing container. The flange particularly preferably completely encloses the outer wall of the mixing container. In addition, a pivot bearing is provided, which preferably connects the surface of the flange, which points in a direction facing away from the mixer opening, to the pivot element. The mixing container is rotatably mounted about the first axis of rotation via this pivot bearing. The pivot bearing can be designed as a ball bearing, for example.
Durch die Drehlagerung des Mischbehälters an einem Flansch kann diese Lagerung prinzipiell an jeder Position des Mischbehälters bezüglich der Rotationsachse angebracht sein. In der Praxis hat sich insbesondere ein Flansch als besonders vorteilhaft gezeigt, der bezüglich der Rotationsachse in dem Drittel des Mischbehälters angebracht ist, das der Mischeröffnung am nächsten liegt.As a result of the rotary mounting of the mixing container on a flange, this mounting can in principle be attached to any position of the mixing container with respect to the axis of rotation. In practice, a flange has been shown to be particularly advantageous which, with respect to the axis of rotation, is attached in the third of the mixing container that is closest to the mixer opening.
Die Drehlagerung über einen Flansch hat zudem den Vorteil, dass eine Drehlagerung am Mischbehälterboden, wie sie häufig bei anderen Mischvorrichtungen zu finden ist, entfällt. Der Mischbehälterboden ist somit von unten prinzipiell frei zugänglich und kann beispielsweise mit einem Doppelmantel zur Mischbehälter- bzw. Mischgutkühlung mit konzentrischer Flüssigkeitszuführung und -abführung über die erste Rotationsachse oder aber mit einer Entleeröffnung versehen werden. Die Entleeröffnung ist vorzugsweise kleiner als die Mischeröffnung. Die Anbringung des Drehlagers an der Fläche des Flansches, die von der Mischeröffnung abgewandt ist, bewirkt darüber hinaus eine erste Abschirmung des Drehlagers von der Mischeröffnung. Dadurch wird verhindert, dass Schmiermittel, beispielsweise Fett oder Öl, das zur Schmierung des Drehlagers und/oder des dazugehörigen Antriebs verwendet wird, während des Betriebs zur Mischeröffnung gelangen kann.The rotary bearing via a flange also has the advantage that there is no need for a rotary bearing on the bottom of the mixing container, as is often found in other mixing devices. The bottom of the mixing container is therefore in principle freely accessible from below and can, for example, be provided with a double jacket for cooling the mixing container or mixed material with concentric liquid supply and discharge via the first axis of rotation or with an emptying opening. The emptying opening is preferably smaller than the mixer opening. The attachment of the pivot bearing to the surface of the flange facing away from the mixer opening also effects a first shielding of the pivot bearing from the mixer opening. This prevents lubricant, for example grease or oil, which is used to lubricate the pivot bearing and / or the associated drive, from reaching the mixer opening during operation.
Alternativ kann das Drehlager allerdings auch an den anderen Flächen eines Flansches, insbesondere auch an der der Mischbehälteröffnung zugewandten Fläche angebracht sein. Dies kann beispielsweise dann vorteilhaft sein, wenn eine Anbringung an der der Mischeröffnung abgewandten Fläche aufgrund von konstruktionsbedingtem Platzmangel nicht möglich ist.Alternatively, however, the pivot bearing can also be attached to the other surfaces of a flange, in particular also to the surface facing the mixing container opening. This can be advantageous, for example, if attachment to the surface facing away from the mixer opening is not possible due to a lack of space due to the design.
In einer besonders bevorzugten Ausführungsform wird das Drehlager von einem gegenüber dem Austritt von Schmiermittel dichten Gehäuse (öldichtem bzw. schmiermitteldichtem Gehäuse) umgeben. Dabei kann das Gehäuse an den Schnittstellen zum Schwenkelement bzw. zum Mischbehälter Dichtungen aufweisen, die das Drehlager gegenüber dem Außenraum abdichten. Das Gehäuse kann beispielsweise auch durch entsprechende Ausbildungen des Flansches und des Schwenkelements sowie durch zwischen den einzelnen Elementen angeordnete Dichtungen gebildet werden.In a particularly preferred embodiment, the rotary bearing is surrounded by a housing (oil-tight or lubricant-tight housing) which is tight against the outlet of lubricant. In this case, the housing can have seals at the interfaces to the swivel element or to the mixing container, which seal the pivot bearing from the outside space. The housing can, for example, also be formed by corresponding designs of the flange and the pivot element and by seals arranged between the individual elements.
Erfindungsgemäß weist der Mischerdeckel ein bezüglich einer zweiten Rotationsachse drehbar gegenüber dem Mischerdeckel gelagertes Mischelement (Mischwerkzeug), vorzugsweise eine Mischerwelle, auf. Dieses Mischelement ist dabei derart ausgebildet und am Mischerdeckel angeordnet, dass es sich bei einer geschlossenen Position des Mischerdeckels innerhalb des Mischbehälters befindet, wobei die zweite Rotationsachse vorzugsweise parallel und besonders bevorzugt parallel aber nicht identisch zur ersten Rotationsachse ist. Dabei kann die Rotationsgeschwindigkeit des Mischelements unabhängig von der Rotationsgeschwindigkeit des Mischbehälters gewählt werden.According to the invention, the mixer cover has a mixing element (mixing tool), preferably a mixer shaft, which is mounted rotatably relative to the mixer cover with respect to a second axis of rotation. This mixing element is designed and arranged on the mixer lid in such a way that it is located inside the mixing container when the mixer lid is in a closed position, the second axis of rotation preferably being parallel and particularly preferably parallel but not identical to the first axis of rotation. The speed of rotation of the mixing element can be selected independently of the speed of rotation of the mixing container.
Des Weiteren kann zudem ein Abstreifelement oder eine Abstreifvorrichtung am Mischerdeckel so angeordnet sein, dass es bzw. sie sich bei einer geschlossenen Position des Mischerdeckels innerhalb des Mischbehälters befindet. Die Längsrichtung des Abstreifelementes erstreckt sich dabei bevorzugt parallel zur Innenwand des Mischbehälters. Besonders bevorzugt weist das Abstreifelement (und auch das Mischelement) Lamellen aus einem elastischen Material auf, die bei einer geschlossenen Position des Mischerdeckels in Kontakt mit der Innenseite des Mischbehälters (u.a. Innenwand und Boden) stehen. Das Abstreifelement ist dabei relativ zum Mischbehälter bewegbar, wobei vorzugsweise das Abstreifelement starr mit dem nicht-mitrotierenden Mischerdeckel verbunden ist und sich der Mischbehälter im Betrieb durch die Rotation des Mischbehälters relativ zum Abstreifelement bewegt.Furthermore, a stripping element or a stripping device can also be arranged on the mixer lid in such a way that it is located within the mixing container when the mixer lid is in a closed position. The longitudinal direction of the stripping element preferably extends parallel to the inner wall of the mixing container. Particularly preferably, the stripping element (and also the mixing element) has lamellae made of an elastic material, which are in contact with the inside of the mixing container (including the inner wall and bottom) when the mixer lid is in a closed position. The stripping element is movable relative to the mixing container, the stripping element preferably being rigidly connected to the non-rotating mixer lid and the mixing container moving relative to the stripping element during operation due to the rotation of the mixing container.
Durch ein Misch- und/oder Abstreifelement der beschriebenen Art wird eine stärkere Durchmischung des Mischguts bewirkt. Da das Misch- und Abstreifelement an dem Mischerdeckel befestigt ist, rotiert es selbst im Betrieb nicht mit dem Mischbehälter mit. Das im Mischbehälter befindliche Mischgut wird daher durch die Drehung des Mischbehälters in eine Relativbewegung zum Misch- und Abstreifelement versetzt. Dies allein bewirkt bereits eine Durchmischung. Wird das Mischelement nun bezüglich der zweiten Rotationsachse in Rotation versetzt, so kommt eine zweite überlagerte Durchmischbewegung hinzu, wodurch sich die Effizienz der Mischvorrichtung deutlich verbessert.A mixing and / or stripping element of the type described brings about a more thorough mixing of the material to be mixed. Since the mixing and stripping element is attached to the mixer lid, it does not rotate with the mixing container even during operation. The mix in the mixing container is therefore moved relative to the mixing container by the rotation of the mixing container. and stripping element offset. This alone already causes a thorough mixing. If the mixing element is now set in rotation with respect to the second axis of rotation, a second superimposed mixing movement is added, which significantly improves the efficiency of the mixing device.
Aufgrund der Befestigung des Misch- und Abstreifelements am Mischerdeckel wird das Misch- und Abstreifelement bei einer Schwenkbewegung entsprechend mitverschenkt.Due to the attachment of the mixing and stripping element to the mixer lid, the mixing and stripping element is given away with a pivoting movement.
Die oben beschriebenen Lamellen überstreichen Teile der Innenseite des Mischbehälters und sorgen dadurch zusätzlich dafür, dass sich keine Rückstände des Mischguts an der Innenseite des Mischbehälters bilden. Besonders bevorzugt werden die gesamte Höhe der Innenwand und zumindest der radial äußere Teil des Mischbehälterbodens vom Abstreifelement überstrichen.The lamellae described above sweep over parts of the inside of the mixing container and thereby additionally ensure that no residues of the mixed material form on the inside of the mixing container. It is particularly preferred that the stripping element sweeps over the entire height of the inner wall and at least the radially outer part of the mixing container base.
Die Drehung des Mischelements wird in der Regel über einen Antrieb erzeugt, der ebenfalls am Mischerdeckel angeordnet ist. Der Antrieb befindet sich dabei auf der der Mischeröffnung abgewandten Seite des Mischerdeckels und treibt eine Mischerwelle an, die bei einer geschlossenen Position des Mischerdeckels durch den Mischerdeckel hindurch in den Mischbehälter ragt.The rotation of the mixing element is usually generated by a drive that is also arranged on the mixer lid. The drive is located on the side of the mixer cover facing away from the mixer opening and drives a mixer shaft which, when the mixer cover is in a closed position, protrudes through the mixer cover into the mixing container.
In einer besonders bevorzugten Ausführungsform weist das Schwenkelement einen Halterahmen mit Drehlager zur Lagerung des Mischbehälters sowie mindestens einen, bevorzugt zwei auf entgegengesetzten Seiten des Halterahmens jeweils mit dem Halterahmen verbundenen Wellenabschnitte auf. Der Halterahmen ist dabei derart ausgebildet, dass er den Mischbehälter zumindest teilweise umgibt. Das stationäre Element weist zudem ein bzw. zwei Schwenklager auf, in denen der Wellenabschnitt bzw. die Wellenabschnitte des Halterahmens jeweils schwenkbar gelagert ist bzw. sind. Alternativ können auch die Schwenklager auf dem Halterahmen und die Wellenabschnitte auf dem stationären Element angeordnet sein.In a particularly preferred embodiment, the pivot element has a holding frame with a rotary bearing for mounting the mixing container and at least one, preferably two, shaft sections connected to the holding frame on opposite sides of the holding frame. The holding frame is designed in such a way that it at least partially surrounds the mixing container. The stationary element also has one or two pivot bearings in which the shaft section or the shaft sections of the holding frame is or are each pivotably mounted. Alternatively, the pivot bearings can also be arranged on the holding frame and the shaft sections on the stationary element.
Diese erste Ausführungsform zeichnet sich dadurch aus, dass das Schwenkelement besonders einfach und materialsparend ausgebildet ist. Der Halterahmen kann insbesondere auch als ringförmiges Element konstruiert sein, so dass er mit einem sich an dem Mischbehälter befindlichen kreisförmigen Flansch über ein Drehlager verbunden werden kann.This first embodiment is characterized in that the pivot element is designed to be particularly simple and material-saving. The holding frame can in particular also be constructed as an annular element so that it can be connected to a circular flange located on the mixing container via a pivot bearing.
In einer besonders bevorzugten Ausführungsform ist die Mischvorrichtung mit einer Hydraulik- oder Pneumatikvorrichtung versehen, die sowohl mit dem stationären Element als auch mit dem Schwenkelement verbunden ist. Die Hydraulik- oder Pneumatikvorrichtung, z.B. ein Hydraulikkolbenantrieb, ist dabei dafür vorgesehen, ein Schwenken des Schwenkelements um die Schwenkachse anzutreiben. Mit ihr kann entweder ein gewünschter Neigungswinkel eingestellt oder auch eine kontinuierliche Schwenkbewegung, z.B. eine Pendelbewegung, angetrieben werden. Insbesondere für Fälle, bei denen keine kontinuierliche Schwenkbewegung des Schwenkelements notwendig ist, hat sich ein hydraulischer bzw. pneumatischer Antrieb zur Steuerung der Schwenkbewegung als vorteilhaft erwiesen. Er stellt eine stabile und kostengünstige Möglichkeit zum Antrieb der Schwenkbewegung dar. Zudem kann das Schwenkelement mit einer Hydraulik- oder Pneumatikvorrichtung auch einfach und stabil bei einer gewünschten Auslenkung - sprich bei einem gewünschten Neigungswinkel des Mischbehälters - fixiert werden. Alternativ können für die Ausführung der Schwenkbewegung auch ein oder mehrere Getriebemotoren oder andere bekannte Antriebssysteme zur Erzeugung einer Dreh- bzw. Schwenkbewegung verwendet werden.In a particularly preferred embodiment, the mixing device is provided with a hydraulic or pneumatic device which is connected both to the stationary element and to the pivoting element. The hydraulic or pneumatic device, for example a hydraulic piston drive, is provided to drive the pivoting element to pivot about the pivot axis. With it either a desired angle of inclination can be set or a continuous pivoting movement, for example a pendulum movement, can be driven. In particular for cases in which no continuous pivoting movement of the pivoting element is necessary, a hydraulic or pneumatic drive for controlling the pivoting movement has proven to be advantageous. It represents a stable and inexpensive way of driving the pivoting movement. In addition, the pivoting element can also be fixed simply and stably with a hydraulic or pneumatic device with a desired deflection - that is, with a desired angle of inclination of the mixing container. Alternatively, one or more geared motors or other known drive systems for generating a rotary or pivoting movement can also be used to execute the pivoting movement.
In einer weiteren Ausführungsform ist der Mischerdeckel klappbar gegenüber der Mischeröffnung gelagert, wobei vorzugsweise an dem Schwenkelement ein Antrieb, z.B. ein Getriebemotor, und besonders bevorzugt eine Hydraulik- oder Pneumatikvorrichtung angeordnet ist, die dafür vorgesehen ist, den Mischerdeckel zwischen der geschlossenen und geöffneten Position hin und her zu bewegen.In a further embodiment, the mixer lid is hinged opposite the mixer opening, with a drive, e.g. a geared motor, and particularly preferably a hydraulic or pneumatic device being arranged on the pivot element, which is provided for moving the mixer lid between the closed and open positions and move forward.
Für den Anwender ist ein klappbarer Mischerdeckel äußerst vorteilhaft, da oftmals ein einziger Handgriff genügt, um den Deckel passkonform auf den Mischbehälter aufzusetzen und die Mischeröffnung zu verschließen. Eine aufwändige Justierung des Mischerdeckels beim Verschließen des Mischbehälters entfällt daher. Ist der klappbare Verschlussmechanismus zusätzlich mit einem Antrieb ausgestattet, so genügt in der Regel ein Knopfdruck zum Öffnen und Verschließen des Mischerdeckels. Andere Lösungen, wie beispielsweise ein an einem Greifarm befestigter Mischerdeckel, sind zwar ebenfalls denkbar, würden allerdings hinsichtlich des Verschließens einen höheren Positionierungs-, Steuerungs- und Kostenaufwand verursachen. Zudem müsste der Deckel über eine kraft- und formschlüssige Verbindung, z.B. mittels Schraubung, zugehalten werden. Bei einem mit einem Antrieb oder einer Hydraulik- oder Pneumatikvorrichtung ausgestatteten klappbaren Verschlussmechanismus, kann der Antrieb zum Klappen des Deckels zudem für eine fortlaufende sichere Zuhaltung des Mischerdeckels im geschlossenen Zustand während des Betriebes des Mischers, z.B. durch anhaltende Aufrechterhaltung des Druckes oder der Spannung genutzt werden.A hinged mixer lid is extremely advantageous for the user, since a single movement is often sufficient to fit the lid onto the mixing container and to close the mixer opening. A complex adjustment of the mixer lid when closing the mixing container is therefore not necessary. If the hinged locking mechanism is also equipped with a drive, a push of a button is usually sufficient to open and close the mixer lid. Other solutions, such as a mixer lid attached to a gripping arm, are also conceivable, but would result in higher positioning, control and cost expenditure with regard to the closing. In addition, the cover would have to be locked using a force-fit and form-fit connection, e.g. by means of a screw. In the case of a hinged locking mechanism equipped with a drive or a hydraulic or pneumatic device, the drive for folding the lid can also be used for continuous safe locking of the mixer lid in the closed state while the mixer is in operation, e.g. by maintaining the pressure or voltage continuously .
In einer bevorzugten Ausführungsform weist der Mischbehälter eine verschließbare Entleeröffnung auf, die derart angeordnet und ausgebildet ist, dass die erste Rotationsachse durch die Entleeröffnung verläuft, besonders bevorzugt zentrisch verläuft. Zudem ist ein Entleerdeckel vorgesehen, der zwischen einer geöffneten Position und einer geschlossenen Position hin und her bewegt werden kann, wobei der Entleerdeckel in der geschlossenen Position die Entleeröffnung verschließt und in der geöffneten Position die Entleeröffnung freigibt.In a preferred embodiment, the mixing container has a closable emptying opening which is arranged and designed in such a way that the first axis of rotation runs through the emptying opening, particularly preferably runs centrally. In addition, an emptying lid is provided which can be moved back and forth between an open position and a closed position, the emptying lid closing the emptying opening in the closed position and releasing the emptying opening in the open position.
Eine solche Entleeröffnung hat zum Vorteil, dass der Mischbehälter zum Entleeren nicht verschwenkt werden muss, um diesen über die Mischeröffnung zu entleeren. Die Entleeröffnung kann beispielsweise oberhalb eines Fließbands angeordnet sein, so dass das fertig gemischte Mischgut über die Entleeröffnung sofort ausgelassen und über das Fließband weiter transportiert werden kann.Such an emptying opening has the advantage that the mixing container does not have to be pivoted for emptying in order to empty it via the mixer opening. The emptying opening can be arranged, for example, above a conveyor belt, so that the ready-mixed material can be discharged immediately via the emptying opening and transported further on the conveyor belt.
In einer besonders bevorzugten Ausführungsform weist die Mischvorrichtung einen Antrieb auf, der an dem Schwenkelement befestigt ist und dafür vorgesehen ist, den Entleerdeckel zwischen der geschlossenen und geöffneten Position hin und her zu bewegen. Dabei ist der Entleerdeckel derart am Mischbehälter angeordnet, dass der Entleerdeckel zusammen mit dem Mischbehälter relativ zum Schwenkelement um die erste Rotationsachse drehbar ist. Der Entleerdeckel ist dabei vorzugsweise als Kugelsegmentventil ausgebildet.In a particularly preferred embodiment, the mixing device has a drive which is attached to the pivot element and is provided for moving the emptying cover back and forth between the closed and open position. The emptying lid is arranged on the mixing container in such a way that the emptying lid can be rotated together with the mixing container relative to the pivoting element about the first axis of rotation. The emptying cover is preferably designed as a segmented ball valve.
Die derartige Lagerung des Entleerdeckels hat zur Folge, dass der Entleerdeckel bei einer Drehung des Mischbehälters im Betrieb mit dem Mischbehälter mitrotiert.Such storage of the emptying lid has the consequence that the emptying lid rotates with the mixing container when the mixing container is rotated during operation.
Die Anordnung des Antriebs am Schwenkelement ist zudem besonders vorteilhaft, da der Antrieb zwar einer Schwenkbewegung des Schwenkelements unterliegt, allerdings nicht der Drehbewegung des Mischbehälters. Dadurch wird die Montage und Energieversorgung, insbesondere die Verkabelung des Antriebs deutlich erleichtert.The arrangement of the drive on the swivel element is also particularly advantageous because the drive is subject to a swivel movement of the swivel element, but not to the rotary movement of the mixing container. This makes assembly and energy supply, in particular the cabling of the drive, significantly easier.
Beispielsweise kann der Entleerdeckel als Kugelsegmentventil und der Antrieb als Linearantrieb, z.B. als Hydraulik- oder Pneumatikkolbenantrieb ausgebildet sein. Die lineare Bewegung des Kolbens wird dann über eine mit dem Mischbehälter mitrotierende Kurvenscheibe in eine Drehbewegung eines Kugelsegments überführt, das als Kugelsegment des Kugelsegmentventils ausgebildet ist, sodass die Drehung des Kugelsegments in die eine Richtung ein Verschließen und in die andere Richtung ein Öffnen der Entleeröffnung bewirkt.For example, the emptying cover can be designed as a segmented ball valve and the drive as a linear drive, e.g. as a hydraulic or pneumatic piston drive. The linear movement of the piston is then converted into a rotary movement of a spherical segment, which is designed as a spherical segment of the spherical segment valve, via a cam disk that rotates with the mixing container, so that the rotation of the spherical segment in one direction causes the emptying opening to close and in the other direction to open .
Weitere Vorteile, Merkmale und Anwendungsmöglichkeiten der vorliegenden Erfindung werden deutlich anhand der folgenden Beschreibung einer bevorzugten Ausführungsform und der zugehörigen Figuren. Es zeigen:
- Figur 1:
- eine Schnittansicht des erfindungsgemäßen Mischbehälters,
- Figur 2:
- eine Schnittansicht der erfindungsgemäßen Mischvorrichtung,
- Figur 3:
- eine perspektivische Ansicht der erfindungsgemäßen Mischvorrichtung.
- Figure 1:
- a sectional view of the mixing container according to the invention,
- Figure 2:
- a sectional view of the mixing device according to the invention,
- Figure 3:
- a perspective view of the mixing device according to the invention.
In
Der hier dargestellte Entleerdeckel 7 ist als Kugelsegmentventil ausgebildet, das am Mischbehälter 2 angeordnet ist und im Betrieb mit diesem mitrotiert. Der Entleerdeckel 7 setzt sich dabei aus zwei Kugelteilsegmenten 32' und 32" (nicht explizit dargestellt) zusammen, die jeweils durch eine Linearbewegung der jeweiligen Hydraulikkolbenantriebe 33' und 33" verschwenkt werden können. Die Hydraulikkolbenantriebe 33' und 33" rotieren im Betrieb nicht mit dem Mischbehälter 2 mit. Durch ein Verschwenken der Kugelsegmente 32' und 32" kann der Entleerdeckel 7 folglich von einer offenen in eine geschlossene Position bzw. von einer geschlossenen in eine offene Position bewegt werden. Die entsprechende "zweite" Schwenkachse, um die das Verschwenken des Entleerdeckels 7 stattfindet, ist dabei vorzugsweise senkrecht zur ersten Rotationsachse 18 und rotiert mit dem Mischbehälter 2 mit.The emptying
In der hier gezeigten Ausführungsform der Mischvorrichtung 1 weist der Mischbehälter 2 einen Flansch 9 auf. An der von der Mischeröffnung 4 abgewandten Seite/Fläche des Flansches 9 ist ein Kugellager 10 angeordnet. Der Flansch 9 ist dabei mit einer Dichtung 30 und mit einer ersten Kugellagerschiene 28' verbunden, die wiederum über ein Kugelelement 29 gegenüber einer zweiten Kugellagerschiene 28" drehbar gelagert ist. Die zweite Kugellagerschiene 28" ist an einem Halterahmen des Schwenkelements 8 befestigt, der als Teil des Schwenkelements ausgebildet ist. Das Kugellager 10 ist dabei derart vom Halterahmen des Schwenkelements 8, dem Flansch 9 und der Dichtung 30 umgeben, dass die Gesamtheit dieser Komponenten 8, 9 und 30 das Kugellager öldicht, genauer gesagt schmiermitteldicht vom Außenraum abgrenzen. Die Gesamtheit der Komponenten 8, 9 und 30 bildet daher ein schmiermitteldichtes Gehäuse 27.In the embodiment of the
Das Kugellager 10 wird über den Antrieb 11 in Bewegung gesetzt, wodurch die Rotation des Mischbehälters um die erste Rotationsachse 18 angetrieben wird.The
Der in
Darüber hinaus ist an dem Mischerdeckel 6 eine Mischerwelle 3 angeordnet, die in den Innenraum des Mischbehälters 2 hineinragt. Die Mischerwelle kann über den ebenfalls am Mischerdeckel angeordneten Antrieb 13 in Rotation um die zweite Rotationsachse 19 versetzt werden. An der Mischerwelle 3 sind zudem Flügel 14 und Bodenabstreifer 15 befestigt. Die Flügel 14 bewirken im Betrieb der Mischvorrichtung 1 eine effiziente Durchmischung des Mischguts. Die Bodenabstreifer 15 enden in der Nähe des Mischbehälterbodens 31 und sind derart ausgebildet, dass im Betrieb der Mischvorrichtung 1 die Bodenabstreifer 15 den Mischbehälterboden 31 überstreichen, so dass am Mischbehälterboden 31 angesammeltes Mischgut vom Mischbehälterboden 31 abgelöst wird, ohne dass durch das Überstreichen der Bodenabstreifer 15 Schäden am Mischbehälterboden 31 entstehen. Die Bodenabstreifer 15 können dabei als Lamellen aus einem elastischen Material oder aber auch aus einem starren Material, wie z.B. einem Kunststoff, ausgebildet sein.In addition, a
In
Außerdem ist in
In
Der klappbare Mischerdeckel 6 ist in
Neben der Mischerwelle 3 mit ihrem Antrieb 13 ist in der perspektivischen Ansicht der
Der Antrieb 24 für die Schwenkbewegung des Schwenkelements ist im Maschinenständer 16 auf der dem Betrachter zugewandten Seite sichtbar. Die Zugänglichkeit des Antriebs hinsichtlich Wartungsarbeiten ist durch die Türen 23 (teilweise ausgeblendet) des Maschinenständers 16 gegeben.The
- 11
- MischvorrichtungMixing device
- 22
- MischbehälterMixing tank
- 33
- Mischelement/MischerwelleMixing element / mixer shaft
- 44th
- MischeröffnungMixer opening
- 55
- EntleeröffnungEmptying opening
- 66th
- MischerdeckelMixer lid
- 77th
- EntleerdeckelEmptying cap
- 88th
- Halterahmen/SchwenkelementHolding frame / swivel element
- 99
- Flanschflange
- 1010
- Drehlager/KugellagerPivot bearings / ball bearings
- 1111
- Antrieb für MischbehälterDrive for mixing container
- 1212th
- Hydraulikvorrichtung (-antrieb) für MischerdeckelHydraulic device (drive) for mixer lid
- 1313th
- Antrieb für MischerwelleDrive for mixer shaft
- 1414th
- Flügelwing
- 1515th
- BodenabstreiferFloor scraper
- 1616
- MaschinenständerMachine stand
- 1717th
- SchwenklagerSwivel bearing
- 1818th
- Erste RotationsachseFirst axis of rotation
- 1919th
- Zweite RotationsachseSecond axis of rotation
- 2020th
- SchwenkachseSwivel axis
- 2121
- Scharnierhinge
- 2222nd
- AbstreifvorrichtungStripping device
- 2323
- Türdoor
- 2424
- Antrieb SchwenkelementDrive swivel element
- 2525th
- MaterialüberleitungMaterial transfer
- 2626th
- Dichtungpoetry
- 2727
- Schmiermitteldichtes (öldichtes) GehäuseLubricant-tight (oil-tight) housing
- 28', 28"28 ', 28 "
- KugellagerschieneBall bearing rail
- 2929
- KugelelementSpherical element
- 3030th
- Dichtungpoetry
- 3131
- MischbehälterbodenMixing tank bottom
- 32',32"32 ', 32 "
- Kugelsegment eines KugelsegmentventilsBall segment of a ball segment valve
- 33',33"33 ', 33 "
- Hydraulikkolbenantrieb für EntleerdeckelHydraulic piston drive for emptying cover
Claims (12)
- A mixing device comprising a mixing container (2) rotatable about a first axis of rotation (18) for receiving mixing material, which has a mixer opening (4) and a mixer cover (6) which can be reciprocated between an opened position and a closed position, wherein the mixer cover (6) in the closed position closes the mixer opening (4) and in the opened position exposes the mixer opening (4), wherein there is provided a machine stand (16) in which the mixing container (2) is rotatably mounted and to which the mixer cover (6) is so fixed that the mixing container (2) in the closed position of the mixer cover (6) is rotatable relative to the mixer cover (6) about the first axis of rotation (18), wherein preferably arranged on the machine stand (16) is a drive intended to drive a rotary movement of the mixing container (2) about the first axis of rotation (18),
wherein
the machine stand (16) has a stationary element and a pivotal element, wherein the pivotal element is mounted pivotably about a pivot axis (20) relative to the stationary element, wherein the mixing container (2) is mounted rotatably to the pivotal element and the mixer cover (6) is fixed to the pivotal element, characterised in that the mixer cover (6) has a mixing element (3), preferably a mixer shaft (3), which is mounted rotatably with respect to the mixer cover (6) in relation to a second axis of rotation (19) and which is of such a configuration and arrangement that in the closed position of the mixer cover (6) it is within the mixing container (2), wherein the second axis of rotation (19) is preferably parallel and particularly preferably parallel but not identical to the first axis of rotation (18). - A mixing device according to claim 1 characterised in that the pivot axis (20) passes through the mixing container (2).
- A mixing device according to one of the preceding claims characterised in that the pivotal element is pivotable with respect to the pivot axis (20) at least through up to 90°, preferably at least up to 180° and particularly preferably through up to 360°.
- A mixing device according to one of the preceding claims characterised in that the first axis of rotation (18) and the pivot axis (20) are arranged perpendicularly to each other and preferably intersect at a point.
- A mixing device according to one of the preceding claims characterised in that the mixer opening (4) is circular and the mixing container (2) is rotationally symmetrical with respect to the first axis of rotation (18), more specifically is preferably portion-wise cylindrical or conical.
- A mixing device according to claim 4 or claim 5 characterised in that the mixing container (2) has a flange (9) with a surface facing towards the mixer opening (4) and a surface facing away from the mixer opening (4) and there is provided a rotary bearing (10) which connects the surface of the flange (9) that faces away from the opening to the pivotal element.
- A mixing device according to claim 6 characterised in that the pivotal element has a housing (27) which is sealed in relation to the escape of lubricant and which surrounds the rotary bearing (10).
- A mixing device according to one of the preceding claims characterised in that the pivotal element (8) has a holding frame with rotary bearing for mounting the mixing container (2), wherein the holding frame at least partially surrounds the mixing container (2), and there are provided at least a shaft portion and a pivot bearing (17), wherein the shaft portion is mounted pivotably in the pivot bearing (17) and either the shaft portion is fixed to the holding frame and the pivot bearing (17) is fixed to the stationary element or the shaft portion is fixed to the stationary element and the pivot bearing (17) is fixed to the holding frame.
- A mixing device according to one of the preceding claims characterised in that the mixing device has a drive device, preferably a hydraulic or pneumatic device, which is connected both to the stationary element and also to the pivotal element (8), and is provided to permit pivotal movement of the pivotal element (8) about the pivot axis (20).
- A mixing device according to one of the preceding claims characterised in that the mixer cover (6) is hingedly mounted with respect to the mixer opening (4), wherein preferably arranged on the pivotal element (8) is a drive device and particularly preferably a hydraulic or pneumatic device provided to reciprocate the mixer cover (6) between the closed and opened position.
- A mixing device according to one of the preceding claims characterised in that the mixing container (2) has a closable emptying opening (5) which is of such an arrangement and configuration that the first axis of rotation (18) passes through the emptying opening (5) and there is provided an emptying cover (7) which can be reciprocated between an opened position and a closed position, wherein the emptying cover (7) closes the emptying opening (5) in the closed position and exposes the emptying opening (5) in the opened position.
- A mixing device according to claim 11 characterised in that there is provided a drive device, preferably a hydraulic or pneumatic piston drive, which is fixed to the pivotal element (8) and is provided to reciprocate the emptying cover (6) between the closed and opened positions and the emptying cover (6) is arranged on the mixing container (2) and is rotatable about the first axis of rotation (18) relative to the pivotal element (8) in the closed position of the emptying cover (6).
Priority Applications (1)
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PL19709932T PL3765181T3 (en) | 2018-03-16 | 2019-03-08 | Hygienic mixer |
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DE102018106189.7A DE102018106189A1 (en) | 2018-03-16 | 2018-03-16 | hygiene mixer |
PCT/EP2019/055886 WO2019175058A1 (en) | 2018-03-16 | 2019-03-08 | Hygienic mixer |
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EP3765181B1 true EP3765181B1 (en) | 2021-10-06 |
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US (1) | US11684900B2 (en) |
EP (1) | EP3765181B1 (en) |
JP (1) | JP7269251B2 (en) |
KR (1) | KR102606505B1 (en) |
CN (1) | CN111867712B (en) |
BR (1) | BR112020016079A2 (en) |
CA (1) | CA3090229A1 (en) |
DE (1) | DE102018106189A1 (en) |
ES (1) | ES2895671T3 (en) |
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PT (1) | PT3765181T (en) |
RU (1) | RU2768399C1 (en) |
UA (1) | UA126828C2 (en) |
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DE102018106189A1 (en) * | 2018-03-16 | 2019-09-19 | Maschinenfabrik Gustav Eirich Gmbh & Co. Kg | hygiene mixer |
CN112354437A (en) * | 2020-11-18 | 2021-02-12 | 淮南市雅洁洗涤用品有限公司 | Raw material mixing device is used in soap production |
CN112546919A (en) * | 2020-12-22 | 2021-03-26 | 姚纪连 | Mixing system for building material production and mixing process thereof |
CN112973520A (en) * | 2021-02-07 | 2021-06-18 | 浙江交投丽新矿业有限公司 | A compound green equipment for mine ecological remediation |
CN112957946A (en) * | 2021-03-10 | 2021-06-15 | 河南建筑材料研究设计院有限责任公司 | High-speed dispersion stirring kettle with asymmetric, reverse and internal heating stirring shaft |
CN114146603B (en) * | 2021-10-23 | 2024-02-13 | 济南约克农牧器械有限公司 | Diluent processing device for pig semen |
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2018
- 2018-03-16 DE DE102018106189.7A patent/DE102018106189A1/en not_active Withdrawn
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2019
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- 2019-03-08 UA UAA202005347A patent/UA126828C2/en unknown
- 2019-03-08 KR KR1020207029755A patent/KR102606505B1/en active IP Right Grant
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DE68903071T2 (en) * | 1988-07-05 | 1993-02-18 | Sancassiano Spa | Kneading machine for food products, especially flour mixes. |
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PT3765181T (en) | 2021-11-12 |
WO2019175058A1 (en) | 2019-09-19 |
DE102018106189A1 (en) | 2019-09-19 |
JP7269251B2 (en) | 2023-05-08 |
KR20200130732A (en) | 2020-11-19 |
ES2895671T3 (en) | 2022-02-22 |
CA3090229A1 (en) | 2019-09-19 |
KR102606505B1 (en) | 2023-11-28 |
JP2021516607A (en) | 2021-07-08 |
PL3765181T3 (en) | 2021-12-27 |
CN111867712A (en) | 2020-10-30 |
CN111867712B (en) | 2022-08-23 |
RU2768399C1 (en) | 2022-03-24 |
ZA202005079B (en) | 2022-01-26 |
BR112020016079A2 (en) | 2020-12-15 |
US11684900B2 (en) | 2023-06-27 |
EP3765181A1 (en) | 2021-01-20 |
US20210016238A1 (en) | 2021-01-21 |
UA126828C2 (en) | 2023-02-08 |
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