EP0658409B1 - Mixing machine - Google Patents

Abstract

The mixing device for mixing a dry, powdery substance, especially a dry mortar or dry colour powder, with water, comprises a funnel-shaped storage container (3) for the powder substance, and an advancing and mixing unit (4,10). A refilling container (17) is located above the storage container, and has openings (15,18) at its lower end. The refilling and storage containers are connected by a tube (19).

Description

The invention relates to a mixing machine for mixing a powdery dry substance, especially dry mortar or dry paint powder, with water with a funnel-shaped storage container for the powdery dry substance and with a conveying and mixing device for discharging the powdery dry substance from the storage container with addition and mixing with water, the conveyor in the form a screw conveyor with a conveyor shaft inside the storage container in the bottom area arranged and integrated in this and wherein the mixing device outside the Storage container is arranged on this and the reservoir has an opening has, in which the conveyor opens and from which the mixing device starts.

This prior art results from DE-A-35 46 501.

Proceeding from this, the object of the invention is to create a mixing machine by means of which even poorly flowing powder products can be discharged without problems.

daß der Bodenbereich des trichterförmigen Vorratsbehälters (3) durch einen nach oben offenen Teilzylinder gebildet ist, in dem sich die Förderschnecke (5) befindet und dessen Mantelfläche jeweils tangential in die beiden zu der Längsachse der Förderschnecke (5) parallelen, einander gegenüberliegenden Schrägwände des trichterförmigen Vorratsbehälters (3) mit unterschiedlichen Neigungswinkeln übergeht.

The invention proposes as a technical solution

that the bottom area of the funnel-shaped storage container (3) is formed by an upwardly open partial cylinder, in which the screw conveyor (5) is located and the lateral surface of which is tangential in the two opposing inclined walls of the funnel-shaped, parallel to the longitudinal axis of the screw conveyor (5) Storage container (3) passes with different angles of inclination.

This is a mixer for mixing a powdery dry substance created with water, with which even hard-flowing powder products are processed can. By making the inclined walls of the funnel-shaped storage container different Have an inclination angle, a continuous slipping of the powder is guaranteed. This means that the powder can be metered continuously. Since, in addition, the screw conveyor all powder is through the Conveyor screw detects which is located in this lowermost area of the storage container. Overall, the mixing machine according to the invention thus makes it less problematic Discharge of poorly flowing powder products in connection with a mixing option created.

In this case, the conveying device preferably opens into a region of the opening of the Storage container arranged metering tube. The dry substance is thus in the Conveyor screw lying in the storage container is fed to a metering screw, which has a constant The amount of dry matter is conveyed into the flanged mixing device.

A further development of the mixing machine according to the invention suggests that the Mixing device a mixer tube with a mixer shaft arranged therein and with a Has water supply. This is a technically simple way to implement the mixing device created using a mixer tube. This is done by an installed water metering system supplies the required amount of water to the mixing tube. The mixing shaft located therein then works the mixture to the wet substance, for example Wet mortar, on. The water supply is preferably by means of a solenoid valve controlled, which is coupled to the control of the drive motor. This Integrated control of the water metering provides another possibility for fully automatic Operation of the mixing machine, so that operating personnel saved accordingly can be.

The mixing device is preferably a separate component at the opening of the storage container attachable. All that is required for this is the mixing device and the storage container to be provided with a corresponding coupling device. This applies equally for the feed spiral and for the mixing shaft, which can be coupled accordingly must so that the conveyor spiral drives the mixing shaft. For fastening the mixing device closure clamps can be used on the storage container, for example. At the end of work all that is required is to disassemble the mixing tube from the storage container and rinse it with water. The dry substance in the container can remain or via a corresponding one Discharge opening.

A further development of this suggests that the mixing device for the non-use state the machine below the hopper slope of the reservoir can be arranged in this way is that it does not protrude beyond the basic cross section limit of the machine. Man takes advantage of the fact that normally below a funnel slope Free space is available, so that there is the separate mixing device can be attached when the machine is not in use, with a corresponding one Fastening device is provided. The type of arrangement and to choose the length of the mixing device so that the mixing device does not have the Basic cross-section of the machine survives and thus with regard to the pallet capability of Mixer doesn't bother. This creates a very compact machine that over it is very easy to use.

A preferred development of the mixing machine according to the invention proposes that the essentially horizontally arranged mixing device optionally at the mouth an additional, separate conveying and mixing device can be arranged essentially vertically is. This training has the advantage that the additional funding and Mixing device can be attached to the base mixing device so that the generated Wet substance of a longer and more intensive exposure to the mixing tools is exposed. The mixing intensity can thus be increased in the downward area will. At the same time, there is a better supply of the prepared mixture to the Pump, because the supply to this pump is then in the downward direction through the Gravity is supported. In addition, the additional conveyor and mixing device runs essentially vertically, it only insignificantly enlarges the basic cross section the mixer, so that it hardly disturbs.

The additional, separate conveying and mixing device can preferably be suspended. This has the advantage that the additional funding and Mixing device if necessary attached to the basic mixing device and then dismantled again can be.

Another development suggests that the mouth of the mixing device at the Underside lies. This has the advantage that the basic mixing device can be used without the additional Conveying and mixing device can be operated easily. Then if the separate Conveying and mixing device is hooked into the basic mixing device Corresponding feed nozzle below the mouth of the basic mixing device to lie, which feeds the wet substance to the actual delivery and mixing tube.

A further development of the mixing machine according to the invention proposes that Manufacture of paint, whereby dry paint powder is mixed with water, the mixing device a dough zone with a mixing and conveying device for the supplied dry Color powder and with a water supply arranged on the mixing and conveying device, further a grinding zone downstream of the dough zone for grinding the color powder added to the water and finally one downstream of the grinding zone Has outlet for the finished color. It is known to produce liquid paint by that dry color powder is mixed with water. This is currently done that you put dry paint powder together with water in a container and then Stir together until the liquid color has its usual consistency, whereby the stirring can be done mechanically by means of an appropriate stirrer. Indeed is disadvantageous that the color can only be produced in small quantities. Above all, the known manufacturing process has the disadvantage that it is continuous Production of the liquid paint is not possible because so far the paint has always been can be mixed in portions. Through the development of the invention Mixing machine is created an automatic color mixer, by means of which above all a continuous production of color is possible, so that the supplied dry Color powder after mixing with water continuously and without interruptions, for example can be applied to a facade. The basic idea of the invention Manufacturing device is that by means of an appropriate device the dry paint powder to be processed is first fed to the production device becomes. In a first step, the dry color powder is initially in the dough zone Water mixed so that a kind of dough or porridge is formed, which at the same time during the Mixing process is fed to the downstream grinding zone, where the dough or porridge is then is ground and thus homogenized in order to obtain the finished liquid color with the usual conventional consistency. This finished color can then are discharged through the outlet, for example by pumping off the liquid paint and processed immediately. According to the invention, it is therefore a multi-stage system, in which a dough or porridge is first produced, which is then by a grinding process is evened out.

The dough zone preferably has a mixing and conveying tube with one arranged therein Shaft as well as with the water supply. The wave is thus within the mixing and Conveyor pipe rotatably mounted and has appropriate mixing paddles for the mixing process or comparable facilities as well as for transporting the dough or porridge transport paddles for example in the form of slanted wings. Instead of this transport paddle it is of course also conceivable to use other transport devices, for example a screw conveyor.

A further development of the manufacturing device according to the invention proposes that the amount of water can be controlled depending on the amount of paint powder delivered. The means that the conveyed color powder is always a well-dosed and fixed one Amount of water is supplied so that the color automatically the desired water content receives.

In a preferred constructive embodiment of the grinding zone, this consists of a Large number of mutually moving and tightly packed packs Bodies through which the pasted paint can be passed. The basic idea of so trained grinding device is to provide a plurality of loose bodies, which in particular by moving a corresponding receptacle against each other be moved. Define the bodies that slide together and roll on each other thus between each small grinding and mixing units with the result that the Color dough or pulp between the bodies is ground and mixed, so that finally the liquid color is created in a homogeneous, uniform consistency. The meal and The degree of mixing depends of course on the length of the grinding zone and the speed of passage the color.

The bodies are preferably spheres and consist, for example, of glass, metal, ceramic or other suitable solid material. The balls have the advantage that they can roll on each other very well and thus achieve an optimal grinding efficiency.

A development of this suggests that the body in a rotatable, cylindrical Drum are arranged, the two end walls each through a perforated plate or Sieve are formed. The basic idea is to make such a drum in particular to fill with balls and to set this drum in a rotary motion so that the balls are constantly moved and shifted, thus enabling the grinding process. The drum will have a closed cylinder jacket, while the have openings on both ends, one end as an entrance for the inclined Paint and the other face serves as an outlet for the finished liquid paint. The Perforated sheets or screens for the end walls have corresponding openings, the Diameter is of course smaller than the diameter of the balls.

A preferred constructive design of the drum suggests that it within the Mixing and delivery pipe is fixed on the shaft. This means that if in the Anteigzone the shaft rotates and thus the colored paste or pulp is formed Rotates drum in the grinding zone simultaneously and synchronously. The advantage is that the Shaft together with the drum forms a structural unit, just like the mixing and Conveyor pipe, which is not only in the dough zone, but also in the grinding zone, where, however, compared to the dough zone for receiving the drum it is considerable has a larger diameter.

A further development of the drum suggests that it be divided into segments, the partitions preferably consist of a perforated plate or sieve. The drum thus has radial partitions with respect to the central axis which the drum in divide individual chambers, each containing a ball packing. Here the partitions can be provided with openings that allow the color to pass through allow, but not a passage of the balls. The advantage of the drum segments lies in the fact that the spheres have a certain spatial limitation in their respective segment exhibit. Above all, the drum segments have the advantage that the color does not collect due to gravity in the lower area. Because of the segmentation the drum filled evenly with paint.

In an optional development, the grinding zone can have an additional water supply, to further dilute the color dough made in the dough zone with water. This additional water supply can also be used to the front face to clean the drum continuously. Of course, but can also on this additional water entry can be dispensed with.

Another development of the manufacturing device for color according to the invention suggests that a spout of the spout is rotatably mounted and thereby the required Level in the mixer is adjustable.

Another development suggests that between the dough zone and the grinding zone additional conveyor for the pasted paint powder is arranged. This has the Advantage that the pasted paint powder without dusting the grinding zone is supplied so that a continuous removal of the pasted color powder takes place.

The conveyor preferably consists of fixed and inclined ones Shear knives. This means that there is a shear zone between the dough zone and the grinding zone created at least four additional shear blades. The one that is rotating pasted color powder experiences through the with respect to the longitudinal axis of the shaft inclined shear knife an axial component, which is for the forward transport of the pasted color powder. To achieve even transport, they are Shear knives preferably evenly distributed around the entire circumference. In the area this shear knife can also be the already mentioned additional water supply.

Finally, it is proposed in a further development of the color mixer that between the An additional mixing and transport device is provided for the grinding zone and the outlet is. This mixing and transport device can be formed by the continuous shaft be equipped with appropriate mixing and transport paddles.

A further development of the mixing machine according to the invention proposes that the Water supply amount is controllable depending on the dry matter flow rate. This means that the conveyed dry matter is always a well-dosed and fixed one Amount of water is supplied so that this integrated control automatically the wet substance receives the desired water content.

Another preferred development of the mixing machine according to the invention proposes that a refill can be arranged above the storage container, the top of the storage container and the underside of the refill container corresponding openings have, which can be connected to one another via a connecting line. This represents one Technically easy way to easily store the dry matter to expand to over 2 tons, for example, without the storage container (with its Conveying and mixing device) must be replaced with a new one. Rather is the reservoir can be refilled directly at the construction site by placing the full refill container is placed so that after opening the connecting line the dry substance of the refill container can flow into the storage container. After the refill container has been emptied and the reservoir has been filled, the empty one can Refill containers are removed again.

In a first alternative, the refill container is a container with fixed walls.

The connecting line is preferably a hose or an accordion-like tube. This is a technically simple way to establish a connection between the Refill container and the reservoir by opening after opening the appropriate Openings the connection pipe is flanged accordingly. this makes possible a jam-free transfer from the refill container to the storage container.

As an alternative to the refill container with the fixed walls, the refill container can also be a flexible container which can be fastened in a container above the storage container Frame can be attached. Such "big bags" for bulk goods are used as refill units or Replenishment unit used by the production site, for example, to a construction site. Of the The advantage of these flexible containers is that they weigh very little, so that they are in the folded state cause only very low return transport costs for refilling. The useful life of such a flexible container is approximately 5 Years. The flexible container is placed in a holder above the actual mixing machine mounted. If necessary, the outlet hose of the container can then be opened to allow the material to flow into the reservoir. The frame can preferably can be adapted to the length of the container by means of extendable feet. For dust-free and watertight delivery from the flexible container preferably becomes a transition piece placed on the top opening of the storage container. The double outlet hose of the container protrudes into the interior of this transition piece and into the other it is placed over the transition piece on the outside. Slipping is done using a so-called Bag buckle prevented.

Another preferred development suggests that the machine has a frame with a has a uniform rectangular cross-section over its entire height. This will make the Mixing machine can be used on pallets and in high storage. She is with a forklift at all accessible from four sides and handled with a hand pallet truck. The transport of the Mixing machine can be carried out with all common pallet trucks, forklifts or cranes will. Due to the observed Euro pallet dimensions (80 x 120 cm) is an optimal Utilization of the truck loading areas as well as high-bay storage areas. For the Transport on a truck or a trailer, extendable feet of the frame must be inserted. This is an additional transport lock due to a low Focus, superfluous.

Finally, a further development of the mixing machine according to the invention suggests an integrated one Probe control with a sensor / button for control of the required wet mortar in front. This creates a possibility for the mixing machine to be fully automatic works and no operating personnel is required.

Fig. 1

eine Seitenansicht einer Mörtelmischmaschine;

Fig. 2

einen Längsschnitt durch die Mörtelmischmaschine in Fig. 1;

Fig. 3

in vergrößertem Maßstab eine Stirnansicht der Mörtelmischmaschine in Fig. 1;

Fig. 4

eine Rückansicht der Mörtelmischmaschine in Fig. 1;

Fig. 5

eine Draufsicht auf die Mörtelmischmaschine;

Fig. 6

einen draufsichtigen Schnitt auf die Mörtelmischmaschine in Fig. 1 oberhalb der Förder- und Mischeinrichtung;

Fig. 7

eine Seitenansicht einer etwas modifizierten, erweiterten Ausführungsform der Mörtelmischmaschine in Fig. 1;

Fig. 8

eine Seitenansicht der Mörtelmischmaschine mit einem flexiblen Nachfüllbehälter;

Fig. 9

eine Detailausschnitt der Mischmaschine im Bereich des vorderen Endes der Mischeinrichtung mit einer zusätzlichen, eingehängten sowie vertikalen Förder- und Mischeinrichtung;

Fig. 10

eine Längsschnittdarstellung einer Farbherstellungsvorrichtung für die Mischeinrichtung;

Fig. 11

einen Querschnitt durch die Vorrichtung in Fig. 10 im Bereich der Trommel;

Fig. 12

eine Querschnittdarstellung im Bereich der Schermesser.

Exemplary embodiments of a mixing machine according to the invention are described below with reference to the drawings. In these shows:

Fig. 1

a side view of a mortar mixing machine;

Fig. 2

a longitudinal section through the mortar mixing machine in Fig. 1;

Fig. 3

an enlarged view of an end view of the mortar mixing machine in Fig. 1;

Fig. 4

a rear view of the mortar mixing machine in Fig. 1;

Fig. 5

a plan view of the mortar mixing machine;

Fig. 6

a top view of the mortar mixing machine in Figure 1 above the conveyor and mixing device.

Fig. 7

a side view of a slightly modified, expanded embodiment of the mortar mixing machine in Fig. 1;

Fig. 8

a side view of the mortar mixing machine with a flexible refill container;

Fig. 9

a detailed section of the mixing machine in the region of the front end of the mixing device with an additional, suspended and vertical conveying and mixing device;

Fig. 10

a longitudinal sectional view of a paint manufacturing device for the mixing device;

Fig. 11

a cross section through the device in Figure 10 in the region of the drum.

Fig. 12

a cross-sectional view in the area of the shear knife.

1 to 6 show the basic version of a mortar mixing machine, while in Fig. 7 and 8 shows an extension form. In Fig. 9, an additional device is shown while 10 to 12, a mixing device in the form of a paint production device is shown.

The basic version of the mortar mixing machine shown in FIGS. 1 to 6 has a cuboid shape Frame 1 in Euro pallet size (80 x 120 cm) and is stackable. This Frame 1 has feet 2 which can be pulled out to different heights and which are shown in broken lines are. This means that every standard mortar pump and other vessels can be different Height can be loaded. There is a funnel-shaped inside the frame Storage container 3, which tapers towards the bottom, in particular the illustrations can be seen in FIGS. 2 to 4. The two inclined walls have a different one Inclination angle. The slipping of the dry mortar is guaranteed. In addition, the storage container 3 has a level indicator. This reservoir 3 also serves as a transport container. In the bottom area of this storage container 3, a conveyor device 4 with a screw conveyor 5 is arranged. Is driven this screw conveyor 5 by an electric motor 6, which is in the axial direction of the screw conveyor 5 located below the hopper slope of the storage container 3 and in particular located within the circumferential contour of the frame 1. This screw conveyor 5 opens into an interchangeable metering tube 7 with a metering screw 8 in Connection to an opening 9 formed laterally in the storage container 3 on the outside of the storage container 3 is at the opening 9 a mixing device 10 with a mixer tube 11 therein located mixer shaft 12 attached. The mixer tube 11 is still with two water supplies 13 provided. The corresponding water connection lines are not shown. The upper side of the storage container 3 also has a cover 14, which has a corresponding one Closes opening 15 on the upper side of the storage container 3.

The mortar mixing machine designed in this way and shown in FIGS. 1 to 6 functions as follows:

When the mortar mixer is not in use, the mixing device 10 is connected to the Mixer tube 11 and the mixer shaft 12 therein are removed and below the Funnel slope of the storage container 3 attached, as indicated in Fig. 3. All necessary Components are therefore in the device with e-pallet dimensions for transport or operation housed. In particular, there are no protrusions during transport. Besides, is ensures optimal space and weight utilization on transport vehicles. Due to a low center of gravity and a constant cross-section, there is no transport lock necessary. After filling the reservoir 3 with dry mortar the entire mortar mixing machine is set up at the required location, and the mixing device 10 is attached to the opening 9 of the storage container 3 by means of a closure tensioner 16, as can be seen in particular in FIG. 6. The mixer shaft 12 with the Screw conveyor 5 coupled. In addition, the water pipe is connected to the water supply 13 connected.

The screw conveyor is operated by means of the electric motor 6 to operate the mortar mixing machine 5 rotated. In addition, the drive motor can be quick-release and a swivel joint can be removed. The dry mortar is thereby through the Feed screw 5 of the feed screw 8 is fed. The dosing screw 8 promotes a constant Amount of dry mortar in the flanged mixer pipe 11 of the mixing device 10.

Due to the installed water metering system, the required amount of water is supplied to the mixer pipe 11 fed. The mixer shaft 12 located therein works the mixture to wet mortar which is discharged through the mixer tube opening. The water supply will controlled by means of a solenoid valve which is connected to the control of the electric motor 6 is coupled. Thanks to an integrated probe control, the mortar mixing machine can work fully automatically, with a sensor / button controlling the required wet mortar takes over which can be put into each mortar jar or pump. Operating personnel is therefore not necessary. At the end of work, only the mixer tube 11 disassemble and rinse with water. The dry mortar in the storage container can remain there or is discharged through an emptying opening. Is at processing only requires dry mortar, so only the water supply to turn off.

The mortar mixing machine can be transported with all standard pallet trucks, stackers and Cranes are carried out. Due to the observed Euro pallet dimensions (80 x 120 cm) is the optimal utilization of the truck loading areas as well as a high rack storage capacity given. For transportation on a truck or a trailer are only to insert the extendable feet 2. The mixer is involved from all sides can be transported on all industrial trucks. In in-house logistics, it has a roller conveyor as well as chain conveyor for automatic filling. Due the low center of gravity makes an additional transport lock superfluous. For cleaning and residual emptying are the mixed and electric drive with quick locks without further removable. After all, the mixer is in the rain without any additional Cover can be used.

7 shows a further development of the mortar mixing machine. The mortar mixer as such does not differ from that as shown in FIGS. 1 to 6 and has been described accordingly. The difference is an additional refill container 17, which is placed on the frame 1 of the actual mortar mixer can be, as can be seen in Fig. 7. This refill container 17 has one corresponding pallet-compatible cross-sectional shape.

The refill container 17 has an opening 18 on the underside. This is above the opening 15 of the storage container 3 after the corresponding lid 14 has been opened is. The connection between the refill container 17 and the reservoir 3 is made via a connecting line in the form of an accordion-like tube. This is because Opening 18 of the refill container 17 is firmly arranged and is pulled downwards flanged on the opening 15 of the storage container 3 accordingly.

This somewhat modified embodiment works as follows:

The refill container can already be placed on the frame 1 while the mortar mixer is in operation 17 are placed in the manner shown. The connection is made via the connecting line 19 to the reservoir 3. If necessary, then by opening a corresponding flap the passage of the dry mortar located in the refill container 17 done in the reservoir 3. After the refill container 17 is empty, it becomes removed and, if necessary, replaced by a filled one. So through the combination of the storage container 3 with the refill container 17 the supply of dry mortar expandable over 2 tons.

8 is a somewhat modified embodiment of the variant with the refill container 17 shown. In this variant, the refill container 17 is designed as a flexible container, which can be suspended in a frame 20 which can be fastened above the storage container 3. This flexible container for bulk goods is usually used as a replenishment unit Production site used to the construction site, being made of a light-resistant and waterproof Material exists and has the great advantage that it is in the folded state has only low return transport costs for refilling, the service life is about 5 years. For dust-free and waterproof transfer from the flexible Refill container 17 in the reservoir 3 is a transition piece 21 to the reservoir 3 laid. The outlet hose 22 of the flexible refill container 17 is double and once protrudes into the interior of the transition piece 21 and the other is over the transition piece 21 turned over. Slipping of the outlet hose 22 on the Transition piece 21 is prevented by means of a bag buckle 23.

9 shows an additional device for the mixing machine and in particular for the mixing device 10 shown. It is a separate, additional funding and Mixing device 24, which on the front end of the mixer tube 11 of the mixing device 10 can be hung. For this purpose, a pipe 25 of the conveying and mixing device 24 aligned vertically by means of a cross rod 26 in an upper-side receiving groove 27 of the mixer tube 11 hooked. Since the mouth 28 of the mixer tube 11 is located on its underside, the tube 25 has a corresponding socket 29, by means of which the material emerging through the mouth 28 the actual pipe 25 Conveying and mixing device 24 is supplied. The advantage of arranging the mouth 28 is that the mixing device 10 easily without the additional conveying and Mixing device 24 can be operated.

The conveying and mixing device has a shaft 30 with mixing and inside Conveyor elements 31 on, the shaft 30 by a separate motor 32 optionally electric motor or hydraulic motor is driven, which is pivotable on the top of the tube 25 is arranged, a quick coupling for securing the operating position 33 serves. As a result, the interior of the additional conveying and mixing device 24 can be handled without problems getting cleaned. On the underside, the pipe 25 also has a discharge connector 34, to which, for example, a pump can be connected.

The advantage of this additional conveying and mixing device 24 is that the mortar is subjected to a longer and more intensive exposure to the mixing tools, so that this improves the quality of the mortar. Because the conveyor and mixing device runs in the vertical direction, the cross section of the mortar mixer increases only insignificant. In particular, the additional conveying and mixing device 24 is not annoying.

10 to 12 is finally a modified embodiment of the mixing device 10, which is used for the production of paint, with dry paint powder with Water is mixed. The dry color powder is in the storage container 3 and is fed to the mixing device 10, which is the same as in the mortar mixing machine can be attached to the storage container 3. The advantage of this color mixing machine is also here in that the dry paint powder by means of the storage container 3 to the respective place of use can be transported to produce the actual liquid paint there. This represents a great weight saving.

The mixing device 10 for producing paint has a rising zone 51 one behind the other, a shear zone 52, a grinding zone 53 and finally an outlet 54. It is in one common mixing and delivery pipe 55, a shaft 56 rotatably supported and by rotates a corresponding drive. In the area of the shear zone 52 as well Grinding zone 53, the mixing and delivery pipe 55 has a significantly larger diameter on than in dough zone 51.

In the dough zone 51, the shaft 56 has mixing and mixing inside the mixing and delivery pipe 55 Conveyor paddle 57. Furthermore, the mixing and delivery pipe 55 with two water feeds 58 equipped. The shaft 56 with its mixing and conveying paddles 57 form one Mixing and conveying device 59 for the supplied dry paint powder.

In the area of the shear zone 52, the mixing and delivery pipe 55 has in the area of the inside Front wall wing-like and inclined shear blades 60, which around the circumference are evenly distributed around. These shear blades 60 define a conveyor 61 for the colored powder from the pasting zone 51 to the subsequent grinding zone 53.

The grinding zone 53 is formed by a cylindrical drum 62 which is on the shaft 56 is fixed. While the cylinder jacket surface of this drum 62 closed is, the two end walls 63 of the drum 62 are each provided with openings and for example formed by a perforated plate or a sieve. Inside the drum 62 are radial partition walls 64 are also arranged, which are also formed by perforated plates and divide the drum into individual segments 65. These are each made with balls 66 Glass, metal, ceramic or other suitable hard material. The diameter of course, these balls 66 are larger than the diameter of the openings in the end walls 63 and in the partitions 64. Finally, the mixing and Conveyor pipe 55 in the area of the grinding zone 53 still two water feeds 67, which, however not necessarily have to be present.

The outlet 54 is formed by a flanged outlet nozzle 68 which is rotatable is stored so that the required level in the mixer can be adjusted. About that In addition, the outlet 54 is equipped with a hitch for a pump.

The shaft 56 with mixing and transport paddles 69 is inside the outlet connection 68 provided, which define an additional mixing and transport device 70.

The color mixer works as follows:

The shaft 56 with its mixing and conveying paddles 57, 69 and with its drum 62 is in rotated so that the paint mixer is in the operating state. Of the Dough zone 51 is supplied with dry paint powder, which is indicated schematically by the arrow P. is. The dry paint powder is captured by the mixing and conveying paddles 57 and mixed with the water supplied through the water supply 58 and the Shear zone 52 fed. In this dough zone 51 the metered color powder is added so much water supplied that a dough is formed which is mixed by the mixing and conveying paddles 57 is touched.

This slurry enters the shear zone 52 and is due to the fixed and inclined Shear knife 60 transported forward so that the slurry through the end wall 63 in Shape of the perforated plate reaches the segments 65 of the drum 62. About the water supply 67 can continue to be supplied water, so that a porridge is formed.

In the segments 65 of the drum 62, the balls 66 are continuously circulated a grinding and mixing of the pulp, so that the liquid after homogenization Color emerges. This liquid paint passes through the outlet end wall 63 of the drum 62 and passes there into the mixing and transport device 70 in the outlet 54, from where the finished liquid paint is pumped out and fed to the point of use can.

Reference list

1

frame

2nd

foot

3rd

Storage container

4th

Conveyor

5

Auger

6

Electric motor

7

Dosing tube

8th

Dosing screw

9

opening

10th

Mixing device

11

Mixer tube

12th

Mixer shaft

13

Water supply

14

cover

15

opening

16

Locking clamp

17th

Refill container

18th

opening

19th

Connecting line

20th

frame

21

Transition piece

22

Outlet hose

23

Bag buckle

24th

Conveying and mixing device

25th

pipe

26

Crossbar

27

Groove

28

muzzle

29

Support

30th

wave

31

Mixing and conveying elements

32

engine

33

Quick coupling

34

Discharge pipe

51

Dough zone

52

Shear zone

53

Grinding zone

54

Spout

55

Mixing and delivery pipe

56

wave

57

Mixing and conveying paddles

58

Water supply

59

Mixing and conveying device

60

Shear knife

61

Conveyor

62

drum

63

Front wall

64

partition wall

65

segment

66

Bullet

67

Water supply

68

Outlet connection

69

Mixing and transport paddles

70

Mixing and transport device

P

Feeding the dry color powder

Claims (28)

1. Mixing machine for mixing a powdery dry substance, in particular dry mortar or dry dye powder, with water with a hopper-like storage container (3) for the powdery substance
   and with a conveyor and mixing device (4, 10) for extraction of the powdery dry substance from the storage container (3) under the addition of and mixing with water,
   where the conveyor device (4) in the form of a worm conveyor (5) with
   a conveyor shaft is arranged inside the storage container (3) in its floor area, and is integral with this, and where the mixing device (10) is arranged outside the storage container (3), on this, and the storage container (3) has an opening (9) into which opens the conveyor device (4) and from which the mixing device (10) begins,
   characterised in that
   the floor area of the hopper-like storage container (3) is formed by a part cylinder open at the top which contains the worm conveyor (5) a the casing of which transforms tangentially into the two inclined walls of the hopper-like storage container (3), which walls have different angles of incline and lie opposite each other, parallel to the longitudinal axis of the worm conveyor (5).
2. Mixing machine according to claim 1
   characterised in that
   the conveyor device (4) opens into a metering pipe (7) arranged in the area of the opening (9) of the storage container (3).
3. Mixing machine according to claim 1 or 2,
   characterised in that
   the mixing device (10) has a mixer pipe (11) with a mixer shaft (12) arranged therein and with a water supply (13).
4. Mixing machine according to any of claims 1 to 3,
   characterised in that
   the mixing device (10) can be attached to the opening (9) of the storage container (3) as a separate component.
5. Mixing machine according to claim 4,
   characterised in that
   when the machine is not in use, the mixing device (10) can be arranged below the hopper inclines of the storage container (3), such that it does not project over the basic cross-section limits of the machine.
6. Mixing machine according to any of claims 1 to 5,
   characterised in that
   at the opening (28) of the essentially horizontally arranged mixing device (10) can be arranged essentially vertically, as an option, an additional separate conveyor and mixing device (24).
7. Mixing machine according to claim 6,
   characterised in that
   the additional separate conveyor and mixing device (24) can be suspended.
8. Mixing machine according to claim 6 or 7,
   characterised in that
   the opening (28) of the mixing device (10) is on its underside.
9. Mixing machine according to any of claims 1 to 8,
   characterised in that
   to produce dye where dry dye powder is mixed with water, the mixing device (10) has a paste preparation zone (51) with a mixing and conveying device (59) for the supplied dry dye powder and a water supply (58) arranged on the mixing and conveying device (59),
   also a grinding zone (53) arranged after the paste preparation zone (51) for crushing the dye powder added to the water,
   and finally an outlet (54) for the finished dye arranged after the grinding zone (53).
10. Mixing machine according to claim 9,
    characterised in that
    the paste preparation zone (51) has a mixing and conveying pipe (55) with a shaft (56) arranged therein and with the water supply (58).
11. Mixing machine according to claim 9 or 10,
    characterised in that
    the water supply quantity can be controlled as a function of the conveyed quantity of dye powder.
12. Mixing machine according to any of claims 9 to 11,
    characterised in that
    the grinding zone (53) consists of a plurality of bodies moving in relation to each other and lying close together in a dense packing through which the dye paste can be passed.
13. Mixing machine according to claim 12,
    characterised in that
    the bodies are spheres (66).
14. Mixing machine according to claim 12 or 13,
    characterised in that
    the bodies are arranged in a rotating cylindrical drum (62) where the two end walls (63) are each formed by a perforated plate or sieve.
15. Mixing machine according to claims 10 and 14,
    characterised in that
    the drum (62) is firmly arranged on the shaft (56) within the mixing and conveying pipe (55).
16. Mixing machine according to claim 14 or 15,
    characterised in that
    the drum (62) is divided into segments (65), where the partition walls (64) preferably consist of a perforated plate or sieve.
17. Mixing machine according to any of claims 9 to 16,
    characterised in that
    the grinding zone (53) has an additional water supply (67).
18. Mixing machine according to any of claims 9 to 17,
    characterised in that
    an outlet spigot (68) of the outlet (54) is mounted rotatably and thus the necessary fill level of the mixer can be adapted.
19. Mixing machine according to any of claims 9 to 18,
    characterised in that
    between the paste preparation zone (51) and the grinding zone (53) is arranged an additional conveyor device (61) for the dye powder paste.
20. Mixing machine according to claim 19,
    characterised in that
    the conveyor device (61) consists of fixed and angled shearing blades (60).
21. Mixing machine according to any of claims 9 to 20,
    characterised in that
    between the grinding zone (53) and the outlet (54) is provided an additional mixing and conveying device (70).
22. Mixing machine according to any of claims 1 to 21,
    characterised in that
    the water supply quantity can be controlled as a function of the conveyed quantity of dry substance.
23. Mixing machine according to any of claims 1 to 22,
    characterised in that
    above the storage container (3) can be arranged a filler container (17) where the top of the storage container (3) and the underside of the filler container (17) have corresponding openings (65, 68) which can be connected together via a connecting line (69).
24. Mixing machine according to claim 23,
    characterised in that
    the filler container (17) is a container with solid walls.
25. Mixing machine according to claim 23 or 24,
    characterised in that
    the connecting line (19) is a hose or concertina-like tube.
26. Mixing machine according to claim 23,
    characterised in that
    the filler container (17) is a flexible container which can be suspended in a frame (20) which can be mounted above the storage container (3).
27. Mixing machine according to any of claims 1 to 26,
    characterised in that
    the machine has a frame (1) with a rectangular cross-section which remains the same throughout its height.
28. Mixing machine according to any of claims 1 to 27,
    characterised by
    an integral probe control with a sensor/feeler to control the required wet substance.

Images