System for applying a building material with multiple mixers and movement device

Abstract

A system for applying a building material, including: a first component of the building material, including a first constituent and a second constituent; a second component of the building material; a first mixer for mixing the first constituent and the second constituent; a supply device for supplying the first constituent to the mixer; a movement device for modifying a site of application in a space; and a second mixer for mixing the first component and the second component.

Claims

1. A system for applying a building material, the system comprising: a first component of the building material, the first component comprising a first ingredient comprising cement and an aggregate and a second ingredient comprising water; a second component of the building material comprising a hardening accelerator; a first mixer configured to mix the first ingredient and the second ingredient of the first component; a supply device configured to supply the first ingredient of the first component to the first mixer; and a movement device having at least a movable portion, a stationary portion, and a second mixer that is arranged on the movable portion, the movement device configured to change a site of application in a space, wherein (i) the second mixer is configured to mix the first component and the second component, and (ii) the movement device is configured to move the second mixer relative to at least the stationary portion of the moving device to apply the building material, and to construct a structure from the building material at the site of application.

2. The system as claimed in claim 1, wherein at least one of the first mixer and the second mixer is constructed modularly and comprises a drive module with a first coupler, and a mixing chamber module with a second coupling coupler, wherein the modules are operatively connected to each other in a use state via the first coupler and the second coupler.

3. The system as claimed in claim 1, wherein the first mixer is arranged in a stationary manner.

4. The system as claimed in claim 1, wherein at least one of the first mixer and the second mixer comprises a stirring shaft which is equipped with at least one pin disposed on a first portion of the stirring shaft and on which a conveyor is arranged on a second portion of the stirring shaft.

5. The system as claimed in claim 1, wherein the supply device comprises a storage device and a metering device.

6. The system as claimed in claim 5, wherein at least one of (i) the metering device is designed as a gravimetric metering device, and (ii) the storage device comprises a hopper and a conveyer.

7. The system as claimed in claim 1, wherein the system comprises at least one of a first pump and a second pump, and at least one of (i) the first component is configured to be pumped from the first mixer to the second mixer by the first pump, and (ii) the second component is configured to be pumped to the second mixer by the second pump.

8. A method for producing a structure from a building material, the method comprising: providing a first ingredient of a first component of the building material, the first ingredient comprising cement and an aggregate; providing a second ingredient of the first component of the building material, the second ingredient comprising water; mixing the first ingredient and the second ingredient of the first component in a first mixer; providing a second component of the building material comprising a hardening accelerator; mixing the first component and the second component in a second mixer; moving a movement device for changing a site of application in a space, the movement device having at least a movable portion, a stationary portion, and the second mixer, which is arranged on the movable portion; and applying the building material, wherein the movement device is configured to move the second mixer relative to at least the stationary portion of the moving device to apply the building material, and to construct a structure from the building material at the site of application.

9. The method as claimed in claim 8, wherein at least one of the first mixer and the second mixer is operated at a rotational speed of more than 500 revolutions per minute.

10. The method as claimed in claim 8, wherein at least one of (i) during the mixing in the first mixer, an average residence time of the ingredients in the mixer is less than 40 s, and (ii) during the mixing in the second mixer, an average residence time of the components of the building material in the mixer is less than 20 s.

11. The method as claimed in claim 8, wherein at least one of (i) during the providing of the first ingredient of the first component of the building material, the first ingredient is metered gravimetrically, and (ii) during the providing of the second ingredient of the first component of the building material, the second ingredient is metered volumetrically.

12. The method as claimed in claim 8, wherein the building material is applied in at least partially overlapping layers such that a structure is constructed in the manner of a 3D printer.

Description

(1) Details and advantages of the invention will be described below using exemplary embodiments and with reference to schematic drawings, in which:

(2) FIG. 1 shows a schematic illustration of an exemplary system for applying a building material;

(3) FIG. 2 shows a schematic illustration of an exemplary mixer;

(4) FIG. 3 shows a schematic illustration of an exemplary drive module and mixing chamber module of a mixer;

(5) FIG. 4 shows a schematic illustration of an exemplary shaft module and drum module of a mixing chamber module; and

(6) FIG. 5 shows a schematic illustration of an exemplary method for producing a structure from a building material.

(7) FIG. 1 schematically illustrates an exemplary system 1 for applying a building material. The system 1 comprises a movement device 2 for changing a site of application in a space. In this exemplary embodiment, the movement device 2 is designed as a crane-like device with a movable arm. The movable arm has a head 36 at a distal end.

(8) In a storage device 30, a first ingredient 3.1 of a first component 3 of the building material is supplied via a hopper 31 and via a conveyor 32 to a metering device 40. The metering device 40 and the storage device 30 together form a supply device 29 which can supply the first ingredient 3.1 of the first component to a first mixer 5.1. The first ingredient 3.1 is supplied via a first inlet 7.1 of the first mixer 5.1.

(9) A second ingredient 3.2 of the first component 3 is supplied to the first mixer 5.1 via a second inlet 7.2 of the first mixer 5.1.

(10) In the first mixer 5.1, the first ingredient 3.1 and the second ingredient 3.2 are mixed in order to form the first component 3 of the building material. Via an outlet 6.1 of the first mixer 5.1, the first component 3 is supplied to the second mixer 5.2 via a first tube system 27. A first pump 33 can convey the first component 3 through the first tube system 27.

(11) Furthermore, the system 1 comprises a second component 4 which can be supplied to the second mixer 5.2 via a second tube system 28. A second pump 34 can also be provided here in order to convey the second component 4 through the second tube system 28.

(12) The first component 3 and the second component 4 are mixed together in the second mixer 5.2. The first component 3 is supplied via a first inlet 7.1 to the second mixer 5.2, and the second component 4 is supplied via a second inlet 7.2 to the second mixer 5.2. The building material produced in the second mixer 5.2 leaves the second mixer 5.2 via an outlet 6.2 of the second mixer 5.2 and is then applied via an outlet opening 38.

(13) In this exemplary embodiment, the first mixer 5.1 is arranged in a stationary manner, and the second mixer 5.2 is arranged movably on the movement device 2. The second mixer 5.2 is arranged on the head 36 of the movement device 2 such that the second mixer 5.2 is in each case in a region of the site of application.

(14) FIG. 2 schematically illustrates an exemplary mixer 5. The mixer 5 comprises a drive 8, a drum 9, a proximal closure 12, a distal closure 13, an outlet 6, a first inlet 7.1, a second inlet 7.2, a third inlet 7.3 and a supporting means 17. For example, during use of the mixer 5 as the second mixer 5.2, the first component 3 can be supplied via the first inlet 7.1, and the second component 4 via the third inlet 7.3, wherein the second inlet 7.2 can be used for cleaning the drum 9 with a cleaning liquid.

(15) As an alternative, the mixer 5 illustrated here, during use as the first mixer 5.1, can be used for mixing the first ingredient 3.1 and the second ingredient 3.2 in order to form the first component 3. Then, for example, the first ingredient 3.1 can be supplied via the first inlet 7.1, and the second ingredient 3.2 can be supplied via the third inlet 7.3, wherein the second inlet 7.2 can be used for cleaning the drum 9 with a cleaning liquid.

(16) In this exemplary embodiment, the distal closure 13 is connected to the drive 8 via the supporting means 17, and therefore a stirring shaft (not visible in this figure) can be mounted both in the proximal closure 12 and in the distal closure 13.

(17) FIG. 3 illustrates the same mixer 5 as previously in FIG. 2, but in this figure the drive module 10 and the mixing chamber module 11 are separated from each other. It is apparent here that the drive module 10 comprises a first coupling element 14, and the mixing chamber module 11 comprises a second coupling element 15. In this exemplary embodiment, the coupling elements 14, 15 each have a toothing which intermesh in an application state.

(18) The separable arrangement of mixing chamber module 11 and drive module 10 enables in particular the mixing chamber module 11 to be removed from the system 1 in order to carry out cleaning and/or maintenance work on the mixing chamber module 11. In particular, the drum 9 can thereby be cleaned in a simple manner without the entire mixer 5 having to be removed from the system 1.

(19) FIG. 4 illustrates the mixing chamber module 11 without the drive module 10. FIG. 4 depicts the mixing chamber module 11 in a separated state. In this exemplary embodiment, the mixing chamber module 11 comprises a shaft module 21 and a drum module 22.

(20) The shaft module 21 in this exemplary embodiment comprises the second coupling element 15, the proximal closure 12, the stirring shaft 16 and a conveyor element 18.

(21) The drum module 22 in this exemplary embodiment comprises an integrally formed tubular drum 9 and a distal closure 13. The drum 9 has a first inlet 7.1, a second inlet 7.2 and a third inlet 7.3 which are all arranged in a first end region of the drum 9. The outlet 6 is arranged on a second end region of the drum 9.

(22) The distal closure 13 in this exemplary embodiment has a sacrificial plate 23 which is arranged on a side of the distal closure 13 that faces the drum 9. The sacrificial plate 23 becomes worn during operation of the system and can be replaced as required. As a result, the distal closure 13 can be used for a longer period of time.

(23) The conveyor element 18 in this exemplary embodiment is designed as a screw conveyor. The conveyor element 18 is arranged attached to the stirring shaft 16. In addition, the conveyor element 18 is secured on the stirring shaft 16 with a locking element (not apparent in this figure).

(24) FIG. 5 finally schematically illustrates a method for producing a structure from a building material. The various method steps are broken down as follows: I providing the first ingredient of the first component of the building material II providing the second ingredient of the first component of the building material III mixing the first ingredient and the second ingredient to form the first component of the building material IV providing the second component of the building material V mixing the first component and the second component to form the building material VI moving the movement device in order to change a site of application in a space VII applying the building material.

(25) It goes without saying that the method steps mentioned here can proceed simultaneously, and therefore the building material can be applied continuously in order to produce a structure from the building material.

LIST OF REFERENCE SIGNS

(26) 1 System

(27) 2 Movement device

(28) 3 First component

(29) 3.1 First ingredient

(30) 3.2 Second ingredient

(31) 4 Second component

(32) 5 Mixer

(33) 5.1 First mixer

(34) 5.2 Second mixer

(35) 6 Outlet

(36) 6.1 Outlet of the first mixer

(37) 6.2 Outlet of the second mixer

(38) 7 Inlet

(39) 7.1 First inlet

(40) 7.2 Second inlet

(41) 7.3 Third inlet

(42) 8 Drive

(43) 9 Drum

(44) 10 Drive module

(45) 11 Mixing chamber module

(46) 12 Proximal closure

(47) 13 Distal closure

(48) 14 First coupling element

(49) 15 Second coupling element

(50) 16 Stirring shaft

(51) 17 Supporting means

(52) 18 Conveyor element

(53) 19 Stirring element

(54) 21 Shaft module

(55) 22 Drum module

(56) 23 Sacrificial plate

(57) 27 First tube system

(58) 28 Second tube system

(59) 29 Supply device

(60) 30 Storage device

(61) 31 Hopper

(62) 32 Conveyor

(63) 33 First pump

(64) 34 Second pump

(65) 36 Head of the movement device

(66) 38 Outlet opening

(67) 40 Metering device

(68) I Providing the first ingredient

(69) II Providing the second ingredient

(70) III Mixing the first ingredient and the second ingredient

(71) IV Providing the second component

(72) V Mixing the first component and the second component

(73) VI Moving the movement device

(74) VII Applying the building material