DE202023101189U1 - Device for producing, mixing and discharging at least one polymer compound - Google Patents

Abstract

Device for producing, mixing and discharging at least one polymer compound (24), in particular for use in traffic construction, the device being designed to carry out the following steps:
Step S10) providing at least two starting components (10, 11), the at least two starting components (10, 11) comprising at least one first starting component (10) and at least one second starting component (11);
Step S20) conveying the at least two starting components (10, 11) into at least one mixing head (15);
Step S30) conveying the first and second starting components (10, 11) through at least one first mixing chamber area (21) of the at least one mixing head (15);
Step S40) mixing the first and second starting components (10, 11) in at least one second mixing chamber region (25) of the at least one mixing head (15) to react the first and second starting components (10, 11) to form a polymer compound (24);
Step S50) Discharging the polymer compound (24) through at least one outlet opening (28) of the mixing head (15).

Description

The invention relates to a device for producing, mixing and discharging at least one polymer compound. The invention also relates to a device for carrying out the method.

From the US 2008/149 023 A1 a system for applying a curable material with a selectable density is known, comprising: a supply of one or more components of the curable material; a dispenser connected to each supply and including an outlet through which the one or more components of the settable material are dispensed; and a density modifier injection point located upstream of the outlet for introducing an amount of a density modifier into the one or more components of the settable material, the amount corresponding to a selectable density of a cured product obtained from the components of the settable material. Device for mixing and applying a curable material with a selectable density. Process for applying a curable material with a selectable density. Process in which the density of the hardenable material is varied during application.

The DE 10 2005 054 153 A1 relates to a method and a device for mixing and metered discharge of large throughput amounts of free-flowing reaction mixtures of at least two highly filled, highly viscous reaction components of a polyurethane reaction. The process is used for the continuous production of material components for construction and insulation materials with the desired structural and building-physical properties with the aid of a dynamic mixer, at least two preliminary pressure tanks with the metering device, consisting of two elements, and pre-mixer systems with several modules, with the entry of the filling materials both in the Polyol and in the isocyanate component fill levels of 20 to 80% by volume or 40 to 200% by weight, based on the reaction components, can be achieved.

The object of the invention is to improve a device for producing, mixing and discharging at least one polymer compound of the type mentioned at the outset in such a way that the individual components can be conveyed and mixed in an optimized manner.

This object is achieved by the device specified in claim 1.

Advantages of the device according to the invention is firstly the provision of an automated process, because previously in many cases a polymer compound according to the invention was produced and mixed by hand from various manual containers and the manual addition of compressible and/or non-compressible components during the mixing process. In the process according to the invention, a special mixing head is also used, which enables optimal mixing of the individual components. This in turn results in improved homogeneity and stability. In addition, components with particularly different properties (e.g. density, fillers and viscosities) and in particular in unequal mixing ratios can be mixed.

• Schritt S10) Bereitstellen von mindestens zwei Ausgangskomponenten, wobei die mindestens zwei Ausgangskomponenten mindestens eine erste Ausgangskomponente und mindestens eine zweite Ausgangskomponente umfassen;
• Schritt S20) Fördern der mindestens zwei Ausgangskomponenten in mindestens einen Mischkopf;
• Schritt S30) Fördern der ersten und zweiten Ausgangskomponente durch mindestens einen ersten Mischkammerbereich des mindestens einen Mischkopfes;
• Schritt S40) Mischen der ersten und zweiten Ausgangskomponente in mindestens einem zweiten Mischkammerbereich des mindestens einen Mischkopfes zum Reagieren der ersten und zweiten Ausgangskomponente zu einer Polymerverbindung; Schritt S50) Austragen der Polymerverbindung durch mindestens eine Austrittsöffnung des Mischkopfes.

The method implemented by the device according to the invention for producing, mixing and discharging at least one polymer compound, in particular for use in traffic engineering, comprises the following steps:

• Step S10) providing at least two starting components, the at least two starting components comprising at least one first starting component and at least one second starting component;
• Step S20) conveying the at least two starting components into at least one mixing head;
• Step S30) conveying the first and second starting components through at least one first mixing chamber area of the at least one mixing head;
• Step S40) mixing the first and second starting components in at least one second mixing chamber area of the at least one mixing head to react the first and second starting components to form a polymer compound; Step S50) Discharging the polymer compound through at least one outlet opening of the mixing head.

The method is preferably intended for use in rail installation. The mixing head preferably comprises a dynamic mixing head.

Preferably the first starting component comprises a polyol and the second starting component comprises an isocyanate and the polymer compound is a polyurethane and/or the first starting component comprises an epoxy resin material and the second starting component comprises an amine and the polymer compound is an epoxy resin. This material is often used when installing rails and has proven particularly useful for rail bearings proved to be the preferred material. More preferably, the polyol is dimethylbenzene diamine and the isocyanate is 4-methyl-m-phenylene diisocyanate.

The at least one first starting component and/or the at least one second starting component in step S10) preferably comprises at least one compressible component and/or a non-compressible component, with the compressible component particularly preferably comprising cork and/or rubber particles and/or those not - Compressible component comprises quartz sand, heavy spar (barite) and/or calcium carbonate. The compressible component and/or the non-compressible component is preferably already contained in the starting components and/or is added during the conveying and mixing process, the components being conveyed and mixed in the process. The addition of a compressible component has the advantage that the polymer compound becomes more flexible when used in rail installation, in particular as a filling material in the full casting process in a rail channel, the subsoil or the area surrounding the rail. stored and fixed elastically and with stray current insulation. A compressible component is understood to be a component that can be reduced in size without loss of material. The use of a non-compressible component has the advantage that an elastic polymer can be used, with the non-compressible component then achieving the effect that it serves as a support grain and enables the hardest possible bearing. Incompressible is thus understood to mean that it is a component which cannot be reduced in size without loss of material.

A fire-retardant component is preferably added to the first and/or second starting component, resulting in a fire-retardant polymer compound. The fire-retardant polymer compound can then be applied to the polymer, for example, as an overlying layer on other materials with a low flash point, or it can be used as a rail joint. This means that, for example, special fire protection requirements can be met when installing rails.

In a step S21), a mixing ratio of the at least one first starting component and the at least one second starting component is preferably set continuously via at least one metering pump. Step S21) is advantageously carried out before, during and/or after step S20), namely the conveying of the at least two starting components into at least one mixing head. The continuous monitoring of the mixing ratio and the continuous setting of the mixing ratio by an operator has the advantage that it is possible to react to temporary irregularities and the optimal mixing ratio of the individual components thus always remains set. Preferably, the usual mixing ratio of polyol to isocyanate is 100 to less than 60, more preferably less than 30, most preferably less than 10. Preferably, the usual mixing ratio of epoxy resin material to amine is about 100 to less than 50, more preferably less than 25, very particularly preferably 10. The yield of the polymerization reaction thus always remains optimal, so that in the optimal case no starting materials remain and the quality of the polymer produced is therefore particularly high, since there are no and/or hardly any unreacted starting components. The at least one first starting component used and the at least one second starting component are preferably selected via machine operation, and the desired mixing ratio is thereby determined. The implementation of inhomogeneous mixing ratios is possible through the use of the mixing head according to the invention with the two mixing chamber areas, in particular since the properties of the first and second starting components can be very different, e.g. in terms of their viscosity.

In a step S22), the pressure load on the at least one dosing pump is preferably monitored via a downstream pressure sensor. The monitoring preferably takes place in a step S22) which is carried out before, during and/or after step S20).

The reaction of the first and second starting components to form a polymer compound preferably also takes place after step S30), in particular during step S40).

In a step S31), conveying into the second mixing chamber area preferably takes place. Step S31) is advantageously carried out during and/or after step S30).

Preferably, a compressible and/or the non-compressible component is fed to the first mixing chamber area in a step S31), which is carried out before, during and/or after step S30), particularly preferably by a metering screw, with the supplied quantity of the compressible component and/or the non-compressible component is adjusted in particular via the speed of the dosing screw. This has the advantage that a very precise dosing of the compressible and/or non-compressible component is achieved and that it does not run through the entire system from the first and/or second reservoir, dosing pump and flow measurement. Another advantage here is that the compressible and/or non-compressible component does not thereby influence the formation of the polymer compound.

In a step S11), which is carried out before, during and/or after step S10), at least one of the first starting components and/or the second starting component is preferably stirred continuously. This prevents particles from settling and/or floating in the at least one first starting component and/or the at least one second starting component and also ensures that the at least one first starting component and/or the at least one second starting component is further processed or removed homogeneously can be.

The at least one first starting component is preferably provided in step S10) without pressure in at least one first storage container. This ensures uncomplicated refillability.

Preferably, in a step S12), which is carried out before, during and/or after step S10), the at least one first reservoir and/or the at least one second reservoir is pressurized. This enables components to be conveyed which have such a high viscosity that they cannot flow without pressure being applied, and it is also ensured that no atmospheric moisture from the ambient air can react with one of the first and/or second starting components. Liquids are considered highly viscous if they are more than 10,000 mPas at 25 °C, while liquids that are still flowable are considered viscous (25 °C at less than 10,000 mPas). A heating element is preferably arranged in and/or on the first and/or second storage container. The heating element is used to heat the first and/or second starting component so that it is made flowable, e.g. at high viscosity.

In a step S13), which is carried out before, during and/or after step S10), the compressible component and/or the non-compressible component is preferably added to the first and/or second storage container via a storage metering screw, particularly preferably mixing takes place by means of an agitator in the first and/or second reservoir.

The first and/or second starting component is preferably provided in at least one pressurized first and/or second storage container, particularly preferably in at least two pressurized first and/or second storage containers. Pressurized is understood here as being subjected to a pressure which is higher than atmospheric pressure.

Preferably, at least one of the first and/or second containers is depressurized and vented while the first and/or second starting component is being prepared; this step is particularly preferably also carried out in the at least one first container. This has the advantage that one of the two containers can easily be filled to refill the material. Since the first and/or second starting component can in principle be moisture-sensitive, a reaction with atmospheric moisture should be avoided.

An inert gas is preferably applied to the at least one first and/or second container after the material has been refilled. This avoids contact with humidity. Inert gases include, for example, low-condensate air, nitrogen, argon or other low-moisture gases.

The delivery in step S20) preferably takes place with at least one metering pump, particularly preferably with at least two metering pumps, and is carried out with a maximum pressure load of 100 bar. Conveyance is to be understood here as meaning that the at least one first starting component, the at least one second starting component and/or the compressible component is moved through the device for carrying out the method. The advantage of using dosing pumps with a maximum pressure load of 100 bar is that the pump builds up a corresponding pressure, which is sufficient to be able to convey highly viscous components through the mixing head, with no additional compressed air having to be used and therefore no unnecessary air entry into the later formed polymer compound takes place.

The metering pumps are preferably designed as gear metering pumps and/or screw metering pumps. The promotion can be carried out with high precision and accuracy by the gear metering pumps and/or screw metering pumps. The precision and accuracy are based on the flow rate per revolution. Hardened bearings, gears and/or pressure plates are preferably used for the metering pumps, in particular gear metering pumps. As a result, these dosing pumps can also convey solids and particles and/or mixtures of liquid components with solids and particles.

A low rotational speed is preferably used to convey high-viscosity materials in order to enable gentle conveyance of the first and/or second starting material and to avoid material breakage on a suction side of the pump. In particular, when the materials are mixed with compressible components, this also avoids a shearing effect on the particles, so that they are not damaged.

The dosing pumps are preferably operated via frequency-controlled geared motors.

In a step S21), which is carried out before, during and/or after step S20), a flow rate measurement of the delivery of the at least one first starting component and the at least one second starting component is preferably carried out continuously. In particular, the flow rate is measured using a sensor, which preferably measures according to the Coriolis principle. A particular advantage of a Coriolis mass flow meter is its suitability for exact volume and mass measurement independent of changes in process conditions and parameters such as temperature, density, pressure, viscosity and conductivity. The advantage of the Coriolis principle is that the mass flow, the density and the temperature of the medium are measured simultaneously. This enables the Coriolis mass flow meter to determine the mass of a component flowing through it with an accuracy of approx. 0.1%. (without additional downstream calculations or evaluation electronics). Another advantage is that air inclusions can also be detected. As an alternative to the Coriolis mass flow meter, a volume sensor based on the gear wheel principle and/or a displacement meter can also be used, in particular a geared flow meter and/or a gear meter.

The measurement sensor preferably sends a continuously determined flow rate to a programmable logic controller, with a programmable logic controller particularly preferably regulating the speed of the metering pumps.

In a step S13), which is carried out before, during and/or after step S10), the at least one first starting component and/or the at least one second starting component is/are preferably conveyed through a recirculation circuit. This can also involve a number of recirculation circuits, one component in each case being conveyed through its own recirculation circuit; a worm pump is preferably used for this purpose. This has the advantage that the components are constantly kept in motion during the process, which means that there is a continuous flow and as a result there is improved homogeneity, which means that the components can also be metered more precisely at the same time. The worm pump is used in particular when starting components with high viscosity values are used (more than 15,000 mPas). The recirculation circuit preferably has more than one return flow line into the respective reservoir.

More preferably, in step S13), the compressible component and/or non-compressible component is added to the recirculation circuit, particularly preferably the addition takes place via a feed screw into a return line to the first and/or second storage container. This has the advantage that the addition only takes place after it has passed through the dosing pump or after the flow rate has been measured.

In a step S14), the recirculation circuit is preferably closed and the at least one first and/or the at least one second starting component is passed through a main circuit to the mixing head (15). Step S14) preferably takes place before step S20). The advantage of this step is that, for example, only the free-flowing components flow in the recirculation circuit and particles such as the compressible component and/or the non-compressible component are preferably only added in the main circuit. The main circuit is preferably understood as the supply line to the mixing head and the recirculation circuit as the return line to the reservoir.

In a step S60), the mixing head is preferably cleaned, particularly preferably by using compressed air and adding a rinsing liquid. In a step S61), lubricating grease is preferably supplied to the mixing head in order to prevent clogging by the polymer compound and/or to avoid a reaction with ambient air and/or with water contained in the air. Steps S60) and/or S61) preferably take place after step S50). One right after Discharging the cleaning prevents polymer residues from remaining in the device of the method and curing there, which would entail much more complex cleaning. The grease in the mixing chamber areas is preferably discharged and disposed of again when the machine is put into operation again.

Steps S30) to S40) are preferably carried out with the exclusion of air. This avoids the entry of air and the associated formation of bubbles in the polymer compound. Particularly preferably, no gases are added to form foam in the process. In some processes for producing and discharging polymer compounds, it can be advantageous for the polymer compound to be subjected to gas, so that bubbles form. This is preferably not desired in the present method. The properties of the polymer compound of the present invention are instead affected, for example, by the addition of the compressible and/or non-compressible component.

The polymer compound is preferably discharged in step S50) at a rate of up to 30 kg/min; a dynamic mixing head is particularly preferably used for the discharge. A dynamic mixing head is understood here to mean a rotating mixer within the mixing head, which is preferably driven by a motor.

Furthermore, the object of the present invention is achieved by an apparatus as specified in claim 13.

The design of the mixing head, in particular the first and second mixing chamber area, offers particular advantages of the device, whereby the first and second starting components, which can have different viscosities, for example, are optimally conveyed and mixed by the different design. The first mixing chamber area is preferably designed as a conveyor screw. This screw conveyor has the advantage that the starting components are not simply injected into the mixing head via valves and then e.g. turbulence is formed which, for example, means that a high-viscosity and a low-viscosity component are not mixed directly, but e.g. the low-viscosity component on the high-viscosity component flows past. Instead, the individual components are conveyed together in a targeted manner to the second mixing chamber area, where they are efficiently mixed.

In the second mixing chamber area, the mixing paddles are preferably designed as screw helices which are interrupted in segments. This is to be understood as meaning that the worm helix has a number of uniform recesses around its circumference. As a result, the first starting component, the second starting component and/or the polymer compound is conveyed and mixed at the same time. More preferably, the second mixing chamber area is composed of a multiplicity of individual mixing rings, with each mixing ring having recesses pointing inwards, with the mixing paddles having different diameters. Advantageously, the mixing paddles are tapered in the direction of the outlet opening. The advantage of this arrangement of the second mixing chamber area is that good mixing of the material is possible, particularly in the case of mixing ratios with different weight proportions and different viscosities.

The mixing head is preferably designed as a dynamic mixing head, preferably using the low-pressure process. More preferably, at least one valve, in particular a needle valve, is formed on the mixing head, with air and/or rinsing liquid being able to be conveyed into the mixing head via the at least one valve, with the addition preferably taking place via two separate valves. The valves are preferably arranged at different heights in relation to a longitudinal axis of the mixing head.

The main circuit and/or the recirculation circuit preferably has a sensor for flow measurement. It is also preferred that the device has a recirculation circuit, which reconnects the at least one first storage container and/or the at least one second storage container via the dosing pump to the at least one first storage container and/or the at least one second storage container.

The mixing head advantageously has at least one lubricating nipple adjacent to the at least one valve, mineral and/or synthetic lubricating greases being able to be conveyed into the mixing head via this at least one lubricating nipple. This has the advantage that after discharge, the mixing head can be filled with the fat(s) and the outlet openings of the needle valves cannot be blocked by the polymer compound that has reacted. This requires the exclusion of air in particular, as this will prevent a reaction with the in the ambient air water contained in the humidity avoided.

A hose extension is preferably provided at the outlet opening of the mixing head forms, the mixing head having a special seal in order to compensate for the counter-pressure occurring during discharge, particularly preferably the special seal is a group spring seal and/or a hard metal seal. The hose extension has the advantage that the polymer compound can be conveyed directly to a filling point. Thus, the discharge by means of a hose extension is particularly suitable for the casting of rails in the full casting process, for casting under the rail and/or for casting rail joints. Another advantage is that the mixing head can remain on the device and does not have to be guided directly over the rail.

• 1 in einer schematischen Darstellung die von der Vorrichtung verwirklichten Schritte des Verfahrens, und
• 2 in einer schematischen Darstellung eine Vorrichtung zur Durchführung des Verfahrens.
• 3 in einer schematischen Darstellung eine Detaildarstellung des Mischkopfes

An embodiment of the invention is explained in more detail below with reference to the drawings. Show it:

• 1 in a schematic representation, the steps of the method implemented by the device, and
• 2 in a schematic representation a device for carrying out the method.
• 3 in a schematic representation a detailed representation of the mixing head

The procedure will shown schematically and with an indication of the components of the device, which in is shown, explained.

In the specified method, in a step S10), two starting components are provided, the two starting components comprising at least one first starting component 10 and at least one second starting component 11; the first starting component 10 is a polyol 10a with a viscosity of approx. 17,000 mPas at 25°C and the second starting component 11 is an isocyanate 11a with a viscosity of approx. 6,800 mPas at 25°C. The polyol 10a is highly viscous and has a consistency such as that of tomato paste. The isocyanate 11a is still flowable and has a consistency of honey. The first starting component 10 is provided without pressure in a first storage container 12 . However, the first reservoir 12 can be pressurized if necessary. The second starting component 11 is provided in two second storage containers 13 .

In a step S11), the first starting component 10 is continuously stirred by an agitator (not shown), so that a homogeneous starting component is present in the storage container 12. The stirring in step S11) is carried out during the entire process or can be stopped when no more starting components 10, 11 are present.

In a step S12), the second two reservoirs 13 are pressurized, since the isocyanate 11a can react in particular with atmospheric moisture and this is to be avoided. For filling and refilling, one of the two second reservoirs 12, 13 is depressurized. In this case, the second reservoirs 13 are additionally charged with an inert gas, so that it is ensured that no moisture from the air gets into the one device 100 .

A compressible component 14 can already be added in a step S13) if this is not already present in the starting components 10, 11 or was mixed into the starting components during production. This is optionally possible by adding it to the first storage container 12 and/or the second storage container 13 via a storage metering screw (not shown).

In a step S20), the first starting component 10 and the second starting component 11 are conveyed into a mixing head 15. Steps S21) and S22) are carried out at the same time. In step S21), a mixing ratio of the first starting component 10 polyol 10a and the second starting component 11 isocyanate 11a is continuously set via a metering pump 16; the metering pump is a gear metering pump 16a here and is designed for a pressure load of 100 bar on the output side. The optimal mixing ratio of the first starting component 10 to the second starting component 11 is here usually in a range between 100:10 to 100:60, which is set specifically for the material and continuously monitored by the device. A pressure load is detected and thus a continuous flow rate measurement takes place in step S22). A sensor 18 is arranged in each recirculation circuit 17 for this purpose. This is a Coriolis mass flow meter 18a, which is suitable for volume and mass measurement. The data determined are transmitted to a programmable logic controller (PLC) 19 which then regulates the metering pumps 18 . can. The first starting component 10 and the second component 11 can each pass through the metering pumps 16 and the sensors 18 from the first storage container 12 and the second storage container 13 via the main circuit 20 recirculation circuit 17 . If a signal is then given to discharge, the recirculation circuit 17 is closed and the valves 22 are switched open to a main circuit 20 and step S20) is completed by the polyol 10a and the isocyanate 11a in the Mixing head 15 are conveyed. In addition, the addition of the compressible component 14 via a feed screw (not shown) would also be possible at this point.

In a step S30), the first starting component 10 and the second starting component 11 are then conveyed in a first mixing chamber region 21 of the mixing head 15. The first mixing chamber area 21 is designed in the form of a screw conveyor 21a. The polyol 10a and the isocyanate 11a are each conveyed into the first mixing chamber area 21 via a valve 22 . The valve 22 is designed as a needle valve 22a. The compressible component 14 is added here via a supply dosing screw 23 . The compressible component 14 is cork particles 14a and rubber particles 14b. The particles 14a, 14b have an average diameter of about one to three millimeters.

In a step S31), the polymer compound 24 is then conveyed into a second mixing chamber area 25. In the second mixing chamber area 25, the polyol 10a reacts with the isocyanate 11a and a polymer compound 24, in particular a polyurethane polymer 24a, is formed. Mixing paddles 26 are formed in the second mixing chamber area 25 . The mixing paddles 26 are stacked on top of one another in several levels and are designed to taper in the direction of an outlet opening 28, and the mixing paddles 26 have recesses 27 at regular intervals around the circumference. This shape of the mixing paddles 26 ensures that components of the polyol 10a and isocyanate 11a that have not yet reacted are further mixed, so that they also react to form the polyurethane polymer 24a. The arrangement in levels and the taper also prevent a low-viscosity starting component from flowing directly down through the mixing head. Also, the compressible component 14 is also mixed homogeneously into the polyurethane polymer 24a. Thus, in a step S40), the polymer compound 24 is mixed in the second mixing chamber area 25 of the mixing head 15.

After passing through the second mixing chamber area 25, the polymer compound 24 is conveyed through the outlet opening 28 of the mixing head 15 for discharge. For easier handling, the outlet opening 28 is connected to a hose 29 so that the polymer compound 24 with the compressible component 14 can be discharged directly over a rail or the desired point in a step S50). The use of a hose 29 results in a counter-pressure caused by the high viscosity and the resulting frictional forces when conveying the polymer compound 24 . This back pressure must be absorbed by a seal 30, in particular a group spring seal 30a, on a rotating shaft, in particular a mixer shaft (not shown) of the mixing head. The maximum pressure load is approx. 60 bar.

After the discharge in step S50), the mixing head 15 is cleaned in a step S60) with compressed air and the addition of a rinsing liquid. Subsequently, in a step S61), lubricating grease is supplied to the mixing head 15 in order to prevent clogging by the polymer compound 24. For this purpose, the lubricating grease is supplied via lubricating nipples 31 arranged in the mixing head 15, so that the needle valves 22a in particular are kept free of residues of the polymer compound 24 by the lubricating grease. When the method is carried out again, the lubricating grease is pressed out through the outlet opening 28 as a result of the renewed filling.

3 shows the mixing head 15 without its outer casing, the first mixing chamber area 21 is designed as a conveyor screw 21a and the second mixing chamber area 25 adjoins the first mixing chamber area 21 . In a modular system, the various mixing paddles 26 are arranged one above the other and taper down towards the outlet opening 28 (not shown). A plurality of recesses 27 are formed on the individual mixing paddles 26 .

4 shows the mixing head 15 without its outer shell, the first mixing chamber area 21 is designed as a screw conveyor 21a. The second mixing chamber area 25 adjoins the first mixing chamber area 21. The mixing paddles 26 are arranged one above the other in such a way that the recesses 27 of the mixing paddles 26 lie directly one above the other. In this embodiment, the second mixing chamber area 25 is not tapered.

Reference List

10

first starting component

10a

polyol

10b

epoxy resin

11

second starting component

11a

isocyanate

11b

amine

12

first reservoir

13

second reservoir

14

compressible component

14a

cork particles

14b

rubber particles

15

mixing head

16

dosing pump

16a

gear dosing pump

16b

screw dosing pump

17

recirculation circuit

18

sensor

18a

Coriolis mass flow meter

18b

gear counter

19

programmable logic controller

20

main circuit

21

first mixing chamber area

21a

Auger

22

Valve

22a

needle valve

23

storage dosing screw

24

polymer compound

24a

polyurethane polymer

25

second mixing chamber area

26

mixing paddle

27

recesses

28

exit port

29

Hose

30

poetry

30a

group spring seal

30b

carbide seal

31

grease nipple

32

screw pump

100

contraption

QUOTES INCLUDED IN DESCRIPTION

This list of documents cited by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent Literature Cited

• US2008149023A1 [0002]
• DE 102005054153 A1 [0003]

Claims (15)

Device for producing, mixing and discharging at least one polymer compound (24), in particular for use in traffic construction, the device being designed to carry out the following steps: Step S10) providing at least two starting components (10, 11), the at least two starting components (10, 11) comprising at least one first starting component (10) and at least one second starting component (11); Step S20) conveying the at least two starting components (10, 11) into at least one mixing head (15); Step S30) conveying the first and second starting components (10, 11) through at least one first mixing chamber area (21) of the at least one mixing head (15); Step S40) mixing the first and second starting components (10, 11) in at least one second mixing chamber region (25) of the at least one mixing head (15) to react the first and second starting components (10, 11) to form a polymer compound (24); Step S50) Discharging the polymer compound (24) through at least one outlet opening (28) of the mixing head (15). Device according to claim 1 , characterized in that the first starting component (10) comprises a polyol (10a) and/or an epoxy resin material and the second starting component (11) comprises an isocyanate (11a) and/or an amine and the polymer compound (24) comprises a polyurethane (24a) and/or is an epoxy resin and/or that the at least one first starting component (10) and/or the at least one second starting component (11) in step S10) comprises at least one compressible component (14) and/or a non-compressible component, preferably wherein the compressible component comprises cork (14a) and/or rubber particles (14b) and/or the non-compressible component comprises quartz sand, heavy spar (barite) and/or calcium carbonate. Device according to claim 1 or 2 , characterized in that a compressible component (14) and/or the non-compressible component in a step S31), which is carried out before, during and/or after step S30), is fed to the first mixing chamber area (21), preferably by a dosing screw (23). Device according to one of Claims 1 until 3 , characterized in that in a step S11), which is carried out before, during and/or after step S10), at least one of the first starting component (10) and/or the second starting component (11) is stirred continuously. Device according to one of Claims 1 until 4 , characterized in that the at least one first starting component (10) is provided in step S10) without pressure in at least one first storage container (12), in a step S12) which is carried out before, during and/or after step S10). is, preferably the at least one first storage container (12) is pressurized, preferably by an inert gas. Device according to one of Claims 1 until 5 , characterized in that the provision of the second starting component (11) takes place in at least one pressurized second storage container (13), preferably in at least two pressurized second storage containers (13), preferably the pressurization takes place with an inert gas. Device according to one of Claims 1 until 6 , characterized in that the delivery in step S20) is carried out with at least one metering pump (16), preferably with at least two metering pumps (16), with a maximum pressure load of 100 bar. Device according to one of the preceding claims, characterized in that in a step S21), which is before, during and/or after step S20), namely the conveying of the at least two starting components (10, 11) into at least one mixing head (15), is carried out, a flow rate measurement of the promotion of the at least one first starting component (10) and the at least one second starting component (11) is carried out continuously. Device according to one of the preceding claims, characterized in that in a step S13), which is carried out before, during and/or after step S10), the at least one first and/or the at least one second starting component (10, 11) is carried out a recirculation circuit (17) is/are promoted. Device according to claim 9 , characterized in that in a step S14) the recirculation circuit (17) is closed and the at least one first and/or the at least one second starting component (10, 11) is fed to the mixing head (15) in a main circuit (20). Device according to one of the preceding claims, characterized in that in a step S60) the mixing head (15) is cleaned, preferably by using compressed air and adding a rinsing liquid and/or that in a step S61) the mixing head (15) is greased to prevent clogging by the polymer compound (24). Device according to one of the preceding claims, characterized in that steps S30) to S40) are carried out with the exclusion of air. Device (100), in particular according to claim 1 , in particular for use in traffic construction, the device (100) having at least one first storage container (12) for receiving at least one first starting component (10) and at least one second storage container (13) for receiving a second starting component (11), the device (100) has at least one dosing pump (16) which is suitable for conveying the at least one first starting component (10) and the at least one second starting component (11), the first and the second storage container (12, 13) having at least one main circuit (20) are connected to at least one mixing head (15), at least one outlet opening (28) being formed on the mixing head (15), characterized in that the mixing head (15) has at least one first mixing chamber area (21) and at least one second mixing chamber area ( 25), wherein the first mixing chamber area (21) is designed as a conveyor screw (21a) and in the second mixing chamber area (25) at least one mixing paddle (26) is designed. Device according to Claim 13 , characterized in that the main circuit (20) has a sensor (18) for flow measurement and/or that the device (100) has a recirculation circuit (17) which feeds the at least one first reservoir (12) and/or the at least one second reservoir (13) in each case via the dosing pump (16) to the at least one first reservoir (12) and/or the at least one second reservoir (13). Device according to Claim 13 or 14 , characterized in that a hose (29) is arranged at the outlet opening (28) of the mixing head (15), the mixing head (15) having a seal (30) in order to ensure the impermeability of the mixing chamber to a shaft when the back pressure is generated can, wherein the seal (30) is preferably a group spring seal (30a) and / or a hard metal seal (30b).

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