EP2118400A2

EP2118400A2 - Mixing and transporting device for mortar

Info

Publication number: EP2118400A2
Application number: EP07846285A
Authority: EP
Inventors: Karlheinz Gerster
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-11-02
Filing date: 2007-10-31
Publication date: 2009-11-18
Also published as: WO2008052530A2; WO2008052529A1; WO2008052530A3; DE112007003235A5; EP2092138A1; DE202007015262U1

Abstract

The invention relates to a mixing and transporting device for mortar, comprising a mixing and storage container (2) and a drive unit (7) for a stirring device (3) arranged in the mixing and storage container. The mixing and storage container has an opening through which mortar material can be discharged. Said device is characterised in that a connection device (17) for additional units is provided on the outlet in such a way that either one or several matching auxiliary units in the form of a pump (11) and a flow-through mixing zone (14) can be added, or none at all, such that, depending on the desired use, the device can be operated with or without additional units, the mixing and storage container being designed for wet operation with wet mortar material and dry operation with dry mortar material. During the wet operation, dry aggregates can be mixed with liquid binding agents such as water, in batches, in the mixing and storage container (2).

Description

Mixing and conveying device for mortar "

The invention relates to a device according to the preamble of claim 1 and a method for operating this mixing and conveying device for mortar.

State of the art

In the construction and dismantling of buildings, a wide variety of types of mortar, e.g. Cement, screed, plaster, adhesive mortar and the like processed. There are a variety of common machine types, such as Pumps, compulsory mixers, continuous mixers as well as plastering and screed machines, which, as stand-alone machines, have numerous advantages and disadvantages during processing. For each of these types of machines there are special applications to which these machines are specialized.

Pumps are exclusively for the promotion of ready-prepared mortar, colors and the like. The devices are specialized in transferring, for example, mortar from one place to another, but have no function in terms of preparing mortar. ^•

Compulsory mixers are superior to the so-called gravity mixers (standard concrete mixers) in that they provide a thorough mixing of the mixes by means of scrapers and motor-driven stirring rods or agitator blades. An advantage of compulsory mixers is that not just combinations of water and a solid Miscible, but also the wet or even dry mixing of several solid components is possible (eg cement, sand and water). Forced mixers work batch by batch - meaning that loading with solid aggregates, adding water, mixing and spreading the mortar are not done simultaneously, but in succession. As a result, there are always interruptions to the work during mixing and pumping. Another disadvantage is the lack of conveying function - in common machines, the material only falls out of the tub bottom or even remains in this.

Continuous mixers are suitable for all mortars that are ready for use and that are processed continuously in a continuous process in the same amount in the same consistency. By means of a metering screw for the solid components and a flow meter in a continuous mixing zone continuously in a constant ratio of water and mortar powder are brought together and immediately mixed by means of agitators and ejected from an outlet. In addition to the consistently high mixing quality and the low human input required, the high throughput is particularly advantageous. The disadvantage is the unsatisfactory Fördersituation, since no direct pumping is possible here.

Cleaning and screed machines solve the mixing and conveying problem in an elegant way, because you have connected the principle of the continuous mixer with a pumping device. The plaster and screed can thus be conveyed efficiently and directly to the wall or other installation locations, sometimes with the aid of compressed air. The disadvantage is that the discontinuous mixing, eg of cement with sand or mortar particularly difficult to process is not possible. Also, only a few of the common plastering machines are to be misappropriated as a pump for finished mortar. Each of these types of machines has a raison d'être that causes the problem of costly multiple purchases for contractors. In addition, several large and heavy machines are to be transported. As a consequence, the required machines or at least individual helpful functions are not always available in the desired manner for reasons of cost, space, transport and set-up time, and work is not carried out efficiently, which entails economic losses.

Purpose and advantages of the invention

The object of the invention is to bundle the functionalities of the common mortar processing machines such as pumps, discontinuously operating forced mixers, continuous-flow mixers, cleaning and screed machines in a single machine. With a mixing pump according to the invention, one has thus basically four machines in a small, universally and flexibly usable. This lowers the investment costs of the target group, increases productivity and flexibility and, through this and its compact design, also appears to be suitable for ergonomic and health benefits in operation.

This object is solved by the claims 1 and 18.

In the dependent claims advantageous embodiments of the invention are shown.

The invention is initially based on a mixing and conveying device for mortar with a mixing and storage container (2) and a drive unit (7) for a stirring device arranged in the mixing and storage container (3), wherein the mixing and storage container has an opening from which mortar material is ausbringbar, characterized characterized in that at the outlet opening a connecting device (17) for additional units is provided such that optionally no, one or more - matched additional units in the form of a pump (11) and a continuous mixing zone (14) is attachable /, so that depending on desired mode of use operation with and without additional unit (s) is possible, the mixing and storage tank is designed for wet operation with wet mortar material and a dry operation with dry mortar material, wherein in wet operation dry aggregates in the mixing and storage tank (2) with liquid Binders such as water can be mixed in batches.

As a result, depending on the selected combination of auxiliary units use as a pump, discontinuous compulsory mixer, continuous flow mixer or continuous cleaning and screed machine possible.

"Continuous" means continuous mixing and, if necessary, pumping out of mortar in a continuous flow process The liquid binders are automatically metered, eg by a flow meter, and added to the flow of material, eg metered by a metering screw conveyor, and mixed in by stirring elements The water, as a standard under the hydraulic binders, is automatically taken from a connected water pipe, which benefits from the high processing volumes per unit of time, the continuous flow of material, for example ^, during the spraying of plasters and the efficient The continuous mixing process only takes place in a continuous mixing zone downstream of the mixing and storage container, so that only dry mortar powder is introduced into the mixing and storage container and always remains dry there This corresponds to the dry operation of the mixing and storage tank. It always gets only as much solid mortar material mixed with eg water, as needed.

"Intermittent", on the other hand, means working in batches divided by interruptions.The feeding of the mixing and storage tank with solid aggregates, the addition of water, the mixing process and the application of the mortar do not happen simultaneously, but one after the other

Speed disadvantages, but it is also able to wet solid or dry ingredients such as several solid aggregates. For example, cement can not only be turned on with water, but can also be stretched with sand. In the present invention plaster can be mixed eg with color additives, which is not possible with common plastering machines. This eliminates the subsequent brushing of the machined surfaces after the plaster job and it saves considerable working time and thus costs. The discontinuous mixing takes place directly in the mixing & storage tank - here all solid and liquid components of the mortar mixture are mixed up and then discharged, for which purpose a shut-off device is opened at the container outlet after completion of the mixing process. This corresponds to the wet operation of the mixing and storage tank, here as a second possibility of wet operation, the pure recording already mixed material in the mixing & storage tank, eg from a truck mixer, must be called if this is only to be pumped to another location. In wet operation in particular a type of use with and without auxiliary unit is possible. Conceivable is the pure mixing and subsequent discharge through the outlet, ie without additional aggregate, or just the pumping with pump attachment. The connecting device for the additional units you can be attached to the opening in the mixing and storage tank, or to any type of extension or continuation of this, even through other machine parts.

It is contemplated that one or more rotational direction dependent coupling elements, e.g. Install freewheels, so that the attached auxiliary units and or the stirring device can be activated or deactivated depending on the direction of rotation. This is particularly important, for example, with regard to the pump module, so that it can be turned off during the discontinuous mixing in the mixing and storage tank by changing the direction of rotation. An eccentric screw pump proposed according to the invention, in contrast to e.g. Radial pumps only in one direction of rotation away from the machine. Upon reversal of the direction of rotation of the drive motor, material otherwise contained in a hose, e.g. spray on the plaster, pumped back into the machine, so to speak, which would not make sense. An activation of the stirring device during pumping is also conceivable, e.g. to provide the full engine power to the pumping process and thereby promote further and higher. The pump is favored as an eccentric screw pump, but are also conceivable other constructions such. Piston pumps or other thick matter pumps.

The quick connection of the additional units should be e.g. by screwing, tightening, clamping, clamping etc. in or on the connecting device, in particular liquid-tight, done.

Another advantage in terms of weight and cost results from the fact that in a preferred construction, the Zusatzaggregate- continuous mixing zone and pump (or their rotors) are driven by the drive unit for the stirring device. The engine for the supply of material from the storage container, as is usual with common machines, eliminated. The machine is thus small and relatively light, due to the low construction with the engine under the mixing trough, in order to enable larger and more powerful machines but also the use of several motors for the stirrer or the auxiliary units kept open. Provided according to the invention is an electric motor, but other drive units such as internal combustion engines come into question.

A preferred embodiment of the invention makes use of the common operation of stirring device and auxiliary units of an angle drive to space-saving to connect vertical and horizontal axes. Advantageously, a bevel gear is used. The mixing of large quantities of mortar in the mixing and storage tank requires a lower speed depending on the mixing use than e.g. the relatively high-revving progressive cavity pumps, which is why it is proposed in a further embodiment that a reduction ratio of the shaft for the additional units to the / the shaft (s) for the stirring means of greater than or equal 1: 1 prevails.

A further preferred embodiment of the invention provides a shut-off device to the mixing and

Reservoir volume in particular liquid-tight from the outlet opening to separate. Thus it can be ensured that the aggregates are mixed really well with the discontinuous mixing in the mixing & storage container and do not already fall into the feed chute before. Also, the removal of the mixing container from the base frame of the machine is possible even when filled.

For complete transport of the mortar from the mixing & storage tank to the additional aggregates a screw conveyor is provided.

The stirring device or the mixing insert is exchangeable according to the invention, depending on which shape of the mixture! PTDPTII-P H = r each task best serves. It is imaginable here. Mixing blades or spiraling to mix material discontinuously. If dry material is to be fed only to the continuous mixing zone, then flat material combs are best suited because they penetrate with the least possible resistance through the stored material, thereby continuously loosening it up and combing it into the feed chute.

The preferred embodiment of the invention is according to the figures 1-4 such that the axis for the stirring means is formed substantially perpendicular. This variant appears to be constructive, since it is particularly small and can do with the fewest parts. It is conceivable according to Figure 5 but also a type in which the driven axles are arranged only horizontally.

In particular, the cost-effective vertical design also allows a completely modular design, in which the basic unit consists essentially only of a base frame of the body and frame and other relevant parts such as the or the motors, the control electronics, the storage and mixing container, mixing inserts, and possibly Exhaust cover, liquid component flow meter, continuous mixing zone or pump parts can be mounted according to need and size.

With the aid of a flow meter for liquid binders, in combination with a standard valve, it is possible to precisely dose the quantity required for the continuous application of mortar in the flow process. An additional solenoid valve opens and closes the supply of liquid binder depending on the engine operation of the conveyor shafts.

There are fastening means provided to transport the machine, for example, with a motor vehicle or a crane. The pump, continuous mixing zone and the outlet are adapted to the particular liquid-tight connection to the connecting device and each other accordingly.

Furthermore, the invention relates to a method for operating a mixing and conveying device for mortar, characterized ^• • characterized in that in the mixing and storage container in discontinuous mixing and conveying dry aggregates are directly processed with liquid binders such as water in batches, during continuous mixing and conveying to the mixing and storage container, however, only dry components are added, which are conveyed to a downstream continuous mixing zone and provided there via an inlet with the respective required amount of liquid binder and mixed with these, wherein the desired functionality with regard to continuous or discontinuous mixing and conveying and the application mode ejection or pumping is achieved by the selection of the cultivation modules or mixing inserts used.

Thus let. in particular, realize the advantages already mentioned above in the inventive method.

Figure directory

Fig. 1 mixing and conveying device for mortar in design as a forced mixer

Fig. 2 mixing and conveying device for mortar in

Design as a pump or compulsory mixer with pumping device

Fig. 3 mixing and conveying device for mortar in design as Durchlaufmiseher Fig. 4 mixing and conveying device for mortar in design as a plaster and screed machine

Fig. 5 Alternative design with horizontal stirring devices in the embodiment as a pump

figure description

Figure 1 shows the mixing and conveying device for mortar (1) in an embodiment as a forced mixer. In large mixing and storage tank (2) mortar powder such as cement with water and possibly also with other additives such as sand is entered in the appropriate proportions and mixed by the (in the drawing stylized) mixing blades (28) of the interchangeable mixing insert (3) , The speed of the motor (7) is reduced via the gear (25) and transmitted via the bevel gear (23, 24) to the mixing shaft receptacle (5). The discontinuous mixing in the mixing and storage container (2) takes place in the opposite direction of application of the material, since in this the freewheel (22) releases as a direction of rotation dependent coupling element the connection from the engine to the attached additional units and thus prevents a possibly attached eccentric screw pump thereof to pump backwards. In FIG. 1, following the partition wall with sealed axle feedthrough (21) of the machine body (20), only the standard feed screw (19) is introduced via the connection axis (30). It promotes after the end of the mixing process, when the drive direction of rotation was changed, for example via the control electronics (26), the material fed through the feed chute (18) through the outlet opening. For safety reasons, the outlet opening and the rotating auger are fitted with an outlet cover attached to the accessory device (17). (29). So the material However, the shut-off device (9) must be pulled out of your ^• closed position, so that the material can be discharged from the trough. The machine is relatively low in the base frame, for example, wheels can be attached to the machine frame (4). For operation with the outlet cover at which the mortar only falls out, the machine should therefore be jacked up eg on a table, workshop trolley or a separate frame to achieve a sufficient height.

FIG. 2 shows the mixing and conveying device for mortar designed as a pump or compulsory mixer with a pump device. In contrast to FIG. 1, instead of the outlet cover (29), a pump module (11) consisting of an eccentric screw stator and an eccentric screw rotor (12) is attached to the connecting device (17) via a connecting element (13). This connection could, for example, be held by tensioned attachment rods (27). As the drive unit (7) rotates forward, the pump is now driven and material is pumped out. This can either finished in the ^' mixing and storage container (2) entered or previously mixed there first. When reversing in the mixed state of the freewheel or the direction of rotation dependent coupling element (22) disables the pump. By way of the hose coupling (10), for example, a hose feed can be made to a spray nozzle.

Figure 3 shows the mixing and conveying device for mortar in configuration as a continuous mixer. For this purpose, the continuous mixing zone and the outlet cover are attached to the connecting device (17). In a line on the connecting axis (30) now the screw conveyor (19) and a turbowire beer (16) are lined up. The screw conveyor (19) continuously pressed dry grout powder in the Durchlaufmisehzone (14) the flat material of the ridges (6) of special mixing insert (3) through the opened ^• Gate valve (9) in the feed chute (18) falls. At the beginning of the continuous mixing zone, the amount of liquid binder metered by a flow meter is added via a water inlet (15). The turbowir beer (16) rapidly rotates along the outer edge of the continuous mixing zone (14), thus mixing the solid and liquid components into a ready-to-use mortar. Due to the constant operation, the material continues to be pushed through the continuous mixing zone (14) from the continuously conveyed until the material reaches the outlet cover (29) and fails.

Figure 4 shows the mixing and conveying device for mortar in design as a plaster and screed machine. The difference to the structure in Figure 3 is merely the replacement of the outlet cover (29) by the pump module (11). The material is therefore not simply ejected after mixing in the continuous mixing zone (14), but pumped out by the eccentric screw pump (11) through a mortar hose connected to the hose coupling (10). Thus, e.g. Concrete can be poured directly into prepared molds without the need for manual transport, as in normal concrete mixers or compulsory mixers and plasters can be applied immediately to walls.

Figure 5 shows an alternative design with horizontal agitators in the embodiment as a pump. The mixing inserts (3) are distributed horizontally and over two axes. In the middle, underneath, there is the conveyor screw (19) which via an outlet opening (8) the mixing and storage container

(2) breaks through and the pump module attached to the connection device for auxiliary units (17) supplied with mortar, which is then pumped via the attached to the hose coupling mortar hose. The mixed inserts

(3) run opposite to the conveying direction of the screw conveyor (19) so the mortar mixture in a revolving To bring mixed movement. When mixing gives the freewheel. , as in the above design, the pump free.

LIST OF REFERENCE NUMBERS

1 Mixing and conveying device for mortar

2 mixing and storage tanks

3 mixing insert / stirring device

4 machine rooms

5 mixing shaft recording

6 material comb

7 engine / drive unit

8 outlet opening

9 shut-off device

10 hose coupling

11 Additional pump module / eccentric screw stator

12 eccentric snubber rotor

13 connecting element.

14 Additional unit Continuous mixing zone

15 water intake

16 turbo-beer

17 Connecting device for additional units

18 feed shaft

19 Auger 0 Machine body 1 Partition with sealed axle feed-through 2 Direction-dependent coupling element / freewheel 3 First bevel gear 4 Second bevel gear with second axis 5 Gear with mounting flange 6 Control electronics 7 Fastening rod 8 Mixing blade 9 Outlet cover 0 Connecting axle

Claims

claims

1. mixing and conveying device for mortar with a mixing and storage container (2) and a drive unit (7) arranged in a mixing and storage agitator (3), wherein the mixing and storage container has an opening, from which mortar material ausbringbar characterized in that at the outlet opening a connection device (17) for additional units is provided such that optionally no, one or more coordinated additional units in the form of a pump (11) and a continuous mixing zone (14) is attachable / are, so that depending on the desired type of use, operation with and without additional unit (s) is possible, wherein the mixing and storage container for wet operation with wet mortar material and a dry operation is designed with dry mortar material, wherein in wet operation dry aggregates in the mixing and storage container (2 ) with liquid binders such as Water can be mixed in batches.

2. Mixing and conveying device according to claim 1, characterized in that the drive unit is reversible in the direction of rotation, so that by means of a direction of rotation-dependent coupling element (22), such as. a freewheel, depending on the direction of rotation of the motor / the attached auxiliary units (11, 14) is activated or deactivated / are.

3. mixing and conveying device according to one of the preceding claims, characterized in that the compound between the drive unit and the Rühreinrichtunc with a direction-dependent coupling element (22), for example, a freewheel is formed, so that the stirring device (3) is operable depending on the direction of rotation.

4. mixing and conveying device according to one of the preceding claims, characterized ^'in that the connection of the additional units to the connecting device (17) by screwing, tightening, clamping or clamping takes place.

5. mixing and conveying device according to one of the preceding claims, characterized in that the additional units continuous flow zone and pump, or their rotors, are driven by the drive unit (7) for the stirring device.

6. mixing and conveying device according to one of the preceding • claims ^ characterized in that the

Drive axles for the stirring device (3) and for the additional units (11, 14) via an angle drive, in particular in the form of a bevel gear (23, 24) are interconnected.

7. Mixing and conveying device according to one of the preceding claims, characterized in that when using ^• only one drive motor for all axes, a reduction ratio of the shaft for the additional units (11, 14) to the / the shaft (s) for the stirring means (3) of greater than or equal to 1: 1 prevails. ^{■ •}

8. mixing and conveying device according to one of the preceding claims, characterized in that the Additional units such as continuous mixing zone (14) or pump (11), ^' or .. whose rotors are driven by at least one separate motor.

9. mixing and conveying device according to one of the preceding claims, characterized in that between the outlet opening and a mixing and reservoir volume, a shut-off device (9) is provided, which separates the mixing and reservoir volume in particular liquid-tight from the outlet opening.

10. Miseh- and feeding device ^'preceding by one of the ^■ claims, characterized in that a screw conveyor (19) from the mixing and storage container (2) in the chute is introduced (18) material further into the (the terminal device 17 ), additional units (11, 14) promotes.

11. Mixing and conveying device according to one of the preceding claims, characterized in that for the mixing and storage container (2) arranged agitating interchangeable mixing inserts (3), for. with wings (28), material combs (6) or mixing spirals. are provided.

12. A mixing and conveying apparatus according to one of the preceding claims, characterized in that at least ^'one axis of the auxiliary units (11, 14) or stirrer (s) is (3) horizontal in the operating state substantially.

13. Mixing and conveying device according to one of the preceding claims, characterized in that - at least one axis of the auxiliary units (11, 14) or the stirring device (3) is aligned in the operating state substantially vertically.

14. mixing and conveying device according to one of the preceding claims, characterized in that the basic unit consists essentially only of a base frame of machine body (20) and machine frame (4) and other relevant parts such as or

Motors (7), the control electronics (26), the Vorratsund mixing container (2), mixing inserts (3) and possibly outlet cover (29), flow meter for liquid components, continuous mixing zone (14) or pump module (11) as needed and size be grown.

Mixing and conveying device according to one of the preceding claims, characterized in that the mixing device comprises a flow meter for liquid binders (for example water).

16. mixing and conveying device according to one of the preceding claims, characterized in that fastening means are provided, on which the device is suspendable for transport.

17. Mixing and conveying device according to one of the preceding claims, characterized in that a mixing device (1) according to one of the preceding claims, and a pump (11), and / or

Continuous mixing zone ^' (14), on the connecting device (17). is / are / is / is present.

18. Method for operating a mixing and

Conveying device for mortar, characterized in that in the mixing and storage container (2) in discontinuous mixing and conveying dry aggregates directly with liquid binders such. Water are processed in batches, the continuous mixing and conveying the mixing and storage container, however, only dry components are added, which are conveyed to a downstream continuous mixing zone and provided there via an inlet with the respective required amount of liquid binder and mixed with these, wherein the desired functionality with regard to continuous or discontinuous mixing and conveying and the application mode ejection or pumping through the selection of the auxiliary units used (11, 14) or mixing inserts (3) is achieved.