DE19738471A1 - Concrete recycling plant for the reprocessing of residual concrete - Google Patents

Abstract

The invention relates to a concrete recycling facility for recycling waste concrete from unused unset concrete residues and from residues resulting from the cleaning of concrete producing or transporting devices such as truck mixers, mixing plants and concrete pumps in construction sites, concrete plants and recycling facilities. The invention seeks to provide a concrete recycling facility which ensures recycling of all waste concrete components and their reintroduction into the production process in an automatically controlled and monitored facility, without having to conduct the individual steps of the method in separate facilities. Furthermore, said facility should also ensure minimization of energy and material consumption and costs and should operate as far as possible free from the inappropriate influence of subjective factors. The inventive facility is a modular construction system mounted in a flexible frame unit in which all components of the facility are arranged variably and all rotating modular units operate fully externally from the waste concrete to be recycled and are supported, guided and driven by a single drive mechanism. The inventive facility can be controlled and monitored fully automatically by integrating conventional electronic control elements.

Description

The invention relates to a concrete recycling plant for the reprocessing of Residual concrete from unused fresh concrete residues and from residues that in the cleaning of concrete manufacturing and transport facilities such as Truck mixers, mixing plants and concrete pumps on construction sites, in concrete plants and reprocessing plants.

In fresh concrete production an average of 2.5% of the Total production quantities as residual quantities for reprocessing in the Concrete plants or reprocessing plants returned. The Reprocessing these residual quantities is particularly problematic because the water contained in the remaining quantities is strongly alkaline and with a high Proportion of cement is mixed. An introduction to this cementitious water into the sewage system is prohibited for reasons of environmental protection. The consequence are labor and material consuming and therefore expensive Reprocessing procedures and / or irreparable environmental damage.

Reprocessing plants are known in which the washing out of the Solid components from the residual concrete with the addition of rinse water and their Classification in, for example, closed washing drums, trough prewashers, Vibration sieve coarse separators or inclined drainage screws with and without a classifying sieve with a downstream clarifier for the reception of the cement-containing water is done separately. With these systems, the cement-containing water in the downstream clarifying parts by agitators be moved so that it does not set. The one involved in these procedures The sludge must be removed from the pits and disposed of as special waste become. This is costly and material-intensive and environmentally unfriendly.  

Wash-out devices for concrete recycling plants with a a container arranged mixing and conveying device in the form of a Screw and at least two scooping devices are from DE 42 15 174 C1 known. Concrete residues are made from concrete mixers with rinsing water in the Container of the washing device passed and there in the form of a rotor a screw conveyor to the end of the container and with the Bucket elevators recycled. On one end of the A screw conveyor is attached to the ring on several rollers outside the Water are arranged on the trough walls, is stored. The screw conveyor turns with the ring and does not need a drive shaft, which makes Sealing problems for shaft bearings in cement-containing water are eliminated. Of the The screw conveyor is driven by a motor-driven pinion is in engagement with a toothed web arranged on the circumference of the ring. This construction is very forceful and requires one accordingly strong drive motor with high power consumption.

They are also washing out devices for concrete recycling plants with a mixing and conveying device in the form of a container a screw and at least two scooping devices from DE 195 03 069 A1 known in which the mixing and conveying device and Buckets are driven by a common chain drive. The mixing and conveying device has a gear wheel on one end face Pick up a drive chain. The gear is on the container wall arranged guide rollers stored. The mixing and conveying device is over a shaft connected to a bucket wheel, on the end of which a second gear wheel is arranged to accommodate a second drive chain and with a completes the second end ring, which is also on the end wall of the Container arranged guide roller is mounted. Guide rollers and drive are essentially arranged outside the residual concrete and insofar less prone to failure. Through the chains, however, considerable amounts of Solid and liquid components added that move the chain links and destroy the drive pinion, which makes the drive very susceptible to failure. Also the central shaft bearing between the screw conveyor and the scoop increases the susceptibility of this system to faults.  

In the washout devices for concrete Reprocessing plants exist through the free for everyone Accessibility also involves the risk of excessive amounts of residual concrete Foreign objects of another kind get into the container, causing the system overloaded and in need of repair. The result is high failure rates and considerable repair costs. In addition, the resulting cement-containing waste water must be separated Pits or devices directed and by means of motorized Mixing devices are kept in motion as the concrete remains in Set off standing water. Such a mixing device is from DE 44 03 262 A1 known. It consists of a trough-shaped container in one Mixing device consisting of two opposing spirals is arranged, which is close to the bottom of the trough shape of the container are adapted. The mixing spirals are cantilevered Races on idlers, which are arranged on the end walls of the container, guided and stored and driven by a chain drive. The opposite Mixing spirals working towards the center of the container prevent deposits the container edges, however, the devices in addition to the Washout devices an additional drive unit and thus additional energy and cost. In addition, the cementitious Water can be filled into the separate mixing device and emptied what additional transportation required.

In the known washing plants and in the mixing plants, the rotating system parts carried by several rollers on the Container walls are arranged. This leads to strong frictional forces require powerful drive units. For the different Process flows require multiple drives that are independent operated, operated and monitored from each other. This is energetic, material and costly. In addition, improper operation of the facilities not excluded because they are easily accessible. overload of systems and the resulting failure of the units and their Repairs are the norm.  

It is therefore an object of the invention to provide a concrete recycling plant which the reprocessing of all components of the residual concrete and their return in the manufacturing process with an automatically controlled and monitored Plant without separation of individual process steps and with minimized Guaranteed energy, material and cost expenditure and that of improper subjective factors are largely independent.

The task is carried out by a concrete recycling plant for reprocessing solved by residual concrete with the characterizing features of claim 1.

The modularly arranged and flexibly configurable units of the In the complete version, the system allows the integration of all Process steps in a plant. The arrangement of the modular units in a flexible frame unit according to claims 2 to 6 allows above In addition, a spatially variable arrangement of the individual modules according to the space requirements of the user. The user can if necessary the space part of the frame unit in which the conveyor units are arranged together with the feed basin and the flushing gallows also at right angles arrange the remaining parts of the frame unit. The individual room parts the frame unit according to claim 2 are if necessary by wall surfaces lockable, which means access to the system through incompetent Operating personnel can be excluded.

The construction of the feed basin with a grate according to Claim 7 allows the penetration of foreign bodies that destroy the aggregates not closed and because of its volume has a storage capacity that a short-term handling of the truck mixer is permitted. The electronic Vehicle detection automatically triggers the supply of rinse water into the System parts and, if necessary, the setting of the drive to full Performance off. The uncontrolled filling of excess concrete in the feed basin can only be used to overflow the feed basin lead because the electronic level monitoring in the mixing and Washing system allows the supply of residual concrete only in the amounts that the Plant can process. An overload of the washing and mixing system as well as the drive and the conveyor units is excluded.  

The driver supplies the rinse water to the mixer truck manually can be triggered by a hand switch on the flushing boom.

The combined construction of the mixing and Washing device in a modular unit and their arrangement in one separate pools and their complete storage and management in one Drive outside of the residual concrete according to claim 8. This is particularly by the structural design of the washing device according to claims 9 to Given 18, in which the washing device with the classifying screen and Scooping devices via a system of drive and receiving rings as well Support tubes are interconnected so that there is a central storage of the functional elements and their continuous operation within the residual concrete superfluous. The arrangement of the classifying screen in the system according to the invention supports and support rods according to claims 13 to 16 also a short-term replacement of the classifying sieve and the Classification or return according to different grain sizes the solid components of the residual concrete in the reprocessing. The immediate one Coupling of a lightweight frame construction according to the invention Claims 19 and 20 ensures that the mixing device of the Drive rings of the washing device carried and in the same interval like the washing device rotating in a single drive Movement is kept, whereby the previously running separately Mixing process in pits is unnecessary. That separately from the frame unit enclosed basin according to claims 22 to 25 divided by two partitions the plant into a clarifier in which the cement-containing water moved back to the manufacturing process and if necessary is pumped off and into a pre-wash and post-wash chamber in which the Solid components of the residual concrete via the screw blades to the classifying sieve conveyed, separated into coarse and fine grain parts via a channel in the basin and with two scooping devices on a divided drainage channel Post-wash and reprocessing are carried.

The control of the modular units of the system is particularly advantageous by a drive according to claim 26. The arrangement of all functional elements of the drive on the frame unit according to claims 27 to 30 outside  of the media to be processed not only guarantees a considerable energy and cost saving, it also ensures that the drive parts of the aggressive cement water cannot be adversely affected and destroyed. The Storage of the washing and mixing device on only one friction wheel on both sides ensures easy movement of the construction, which also makes the Use of the previously required powerful motors is no longer necessary.

The automatically controlled sequence of process steps in the Integrated recycling system according to the invention by means of conventional Electronic controls allow one of subjective factors largely independent process flow and the saving of Operating personnel for the previously required separately running Procedures for reprocessing. It enables the saving of Work equipment, transport routes and time required for transport between the previously set up and operated manually Processing plants. The expensive ancillary construction costs for the construction of the septic tanks as well as the energy and personnel expenditure for the operation and support of the There are no pits. Additional screening and separation systems are no longer required. The simultaneous and with the reprocessing process automatically and the cleaning of the pumps takes place independently of subjective influencing factors, Pipe systems, mixing and washing out parts as well as the feeding and Work basins also ensure a much longer lifespan all machine and system parts, control elements and means of transport as well as high time savings for the previously manual cleaning. The Destruction of plant and machine parts due to improper operation such as overfilling the feed basin and overloading the facilities, is due to the electronic control and monitoring as well as the optimal dimensioning of the system parts excluded.

Finally, there is a significant advantage to being electronically controlled and monitored reprocessing plant in that their use timed and spatially independent of each other from the concrete plant and from those arriving Truck mixer drivers is guaranteed.  

The invention is explained in more detail below using an exemplary embodiment described. The drawings show in

FIG. 1 is a front view of a concrete recycling plant according to the invention without frame walls and pools,

Fig. 2 is a plan view of a plant according to the invention without Betonrecycling- frame walls and basin,

Fig. 3 is a side views of a plant according to the invention Betonrecycling- in section AA and BB in section of FIG. 1,

Fig. 4 is a front view of the frame unit of a system according to the invention without Betonrecycling- frame walls,

Fig. 5 is a top view of the frame unit of a plant according to the invention without Betonrecycling- frame walls,

Fig. 6, the side views of the frame unit of a system according to the invention Betonrecycling- in section AA and BB of Fig. 4,

Fig. 7 shows the top view of the section shown fully assembled as washout,

Fig. 8 is a side view of the washing device in cross-section BB of Fig. 1,

Fig. 9 is a side view of a drive ring in the section CC from Fig. 10,

Fig. 10 is a front view of a drive ring,

Fig. 11 is a side view of a retainer ring in cross-section CC of FIG. 12,

Fig. 12 is a front view of a retainer ring,

Fig. 13 is a front view of a support,

Fig. 14 is a side view of a support,

Fig. 15 is a plan view of a column flange in the section AA of Fig. 13,

Fig. 16 shows the front view of a support bar,

Fig. 17 is a plan view of a support bar,

Fig. 18 shows the front view of a screw vane,

Fig. 19 is a plan view of a screw vane,

Fig. 20 is a front view of the mixing device in the section CC from Fig. 2,

Fig. 21 is a side view of the mixing device in the section BB of Fig. 1,

Fig. 22 is a side view of the mixing device in the section DD from Fig. 1,

Fig. 23 is a front view of the basin in section EE of Fig. 2,

Fig. 24 is a side view of the basin,

Fig. 25 is a side view of the drive in the section AA of Fig. 1,

Fig. 26 is a front view of the drive in section CC from Fig. 2,

Fig. 27 is a side view of the drive in section B-B of FIG. 1, the same parts are designated with like numerals.

In Fig. 1 and 2, the front view and the top view 11 and 12, the drive 9 and a basin 16 and a shared drainage channel 17 to recognize a Betonrecycling- system in a linear arrangement form of the modular units of the invention in and on the modular frame unit. 13 Here, the basin 16 and on the room parts 13 'and 13 ''of the frame unit 13, which can be arranged as required wall surfaces for reasons of visual clarity for the viewer. The frame 22 composed of conventional steel profiles is mounted on a base 18 according to FIGS. 4 and 5. The modular units 11 and 12 are arranged in the room parts 13 ', 13 ''and 13 ''' of the frame unit 13 , which can be easily separated from one another or linked together as required by the user. In the linear arrangement form that is preferably shown, the feed basin 2 made of, for example, sheet steel is part of the modular unit 11 with its rear wall 2 ″ ″ on preferably two brackets 2 ″ ″ on the front side by the horizontal frame planes F and I and by vertical frame planes A and B limited space part 13 'of the frame unit 13 is arranged. The feed basin 2 is closed on both sides at right angles to the rear wall 2 '''with two side walls 2 ' which essentially form an acute-angled triangle and an end wall 2 '' which closes with the diagonals of the side walls 2 '. The end wall 2 ″ forms the bottom of the feed basin 2 and at the same time serves as a kind of slide. In the bottom area of the feed basin 2 there is a suction nozzle for a concrete pump 5 ″ in the rear wall 2 ″ and a grating 2 is arranged above the suction nozzle parallel to the filling level of the feed basin 2 , through which the penetration of objects which destroy the conveying units can be avoided. Above the feed basin 2 there is a pipeline with openings directed into the feed basin 2 , with which rinse water is supplied in the feed basin 2 to dilute the residual concrete. The pipeline is led out of the closed side wall of the room part 13 ', which is not shown in the drawings. A flushing water line 1 is preferably arranged vertically from the top wall of the room part 13 ', which is also not shown in any more detail, which is angled away from the room part 13 ' at an arbitrarily definable height and forms a flushing boom 1 . If necessary, two flushing gallows 1 can also be provided at this point. Rinse water is removed via the rinse water line 1 'for cleaning, for example, the drum of a truck mixer. For this purpose, a manually operated switch is arranged in a visible place for the driver. In the part 13 'of the frame unit 13 which is closed with walls, not shown in the drawings, there are, for example, a concrete pump 5 ''with an output of 11 kW, a concrete pump 5 ' of the type 3808-3812 / H with an output of 7, 5 kW, a 5 '''' flushing water pump of type 3808-3825 / SL with a capacity of 5.5 kW and a second 5 '''flushing water pump of type 3808-3825 / SL with a capacity of 5.5 kW with conventional ones Pipelines, pipe sockets, flanges, pipe bends etc. connected in such a way that the concrete pump 5 '' takes over the diluted residual concrete from the feed basin 2 and transports it via a pressure pipe 15 into the space part 13 '' of the frame unit 13 . The concrete pump 5 'is connected so that it ensures the return of the cement-containing water flowing out of the residual concrete into the manufacturing process, the concrete pump 5 ''conveys the diluted residual concrete from the feed basin 2 for washing out and classifying into its coarse and fine components in the room part 13 '', the rinse water pump 5 '''supplies the rinse boom 1 with rinse water and the rinse water pump 5 ''''transports rinse water into the feed basin 2 . The great advantage of the space part 13 'arranged conveying units 5 is the sealability of the space part 13' by the mounting of wall elements. In this way, access to the conveyor units 5 is only guaranteed by competent personnel. The arbitrary changing of the performance parameters set on the conveying units 5 by incompetent people is not possible, as a result of which the overloading of pump motors, drive or other system parts can be excluded. In the linear arrangement form of the concrete recycling plant according to the invention, the space part 13 ″ delimited by the horizontal frame levels F and I and the vertical frame levels B and D adjoins the space part 13 ′. The beams 19 , trusses 20 , and pipe supports 21 of the frame 22 fastened on the underframe 18 are arranged in such a way that the space part 13 ″ is detachably connected to the space part 13 ′. The frame elements are connected to one another in such a way that the space part 13 ″ can be separated again in a vertical frame plane C. In the vertical frame plane B in the central axis X, a pipe support 21 with sub-beams 19 'to the room part 13 ''is arranged, on which a pressure pipe 15 guided out of the room part 13 ' and coupled to the concrete pump 5 '' is held or carried. In the exemplary embodiment, the length and width of the room part 13 ″ is designed such that it can accommodate the complete modular unit 12 and a separate basin 16 that is approximately the same length.

Due to the variability of the construction of the frame unit 13 , the user can also obtain a system variant shortened by the length of the mixing device 4 if, for example, he wants to use an existing pit for the cement water. The cement water is then drained from the washing device directly into such a pit. The basin 16 according to FIGS. 23 and 24, not shown in more detail in FIGS. 1 and 2, consists of a semicircular base 16 'running over its entire length, on the two opposite upper edges of which two side walls 15 ''running parallel and parallel to each other close. ' on. Two end walls 16 ″ provided with rectangular cutouts close the basin 16 in the vertical frame planes B and D. In the interior of the basin 16 there is a partition 40 parallel to the end walls 16 ″ in the frame plane B, a partition 41 and in the frame plane D. A groove 42 is arranged at right angles to the end wall 16 ″ in the frame plane D. The partition 40 divides the basin 16 up to a height which corresponds to approximately two thirds of the total basin height into a clarifying part 10 and a pre-wash and post-wash area of the washing device 3 . The partition 41 divides the pre-wash and post-wash areas in the basin 16 . The groove 42 arranged at right angles to the end wall 16 ″ in the frame plane D projects into the interior of the basin 16 . The basin 16 is fixedly mounted with the bottom 16 'on the base 18 of the frame 22 . A conventional emergency drain valve is provided at a suitable location on the floor 16 '. The particular advantage of the design of the basin 16 according to the invention consists in the combination of a clarifying part 10 and a pre-wash and post-wash area in a self-contained work space, which combines the work steps previously carried out in separate systems, washing out, classifying and mixing the cement-containing water in pits , guaranteed in a system. In the selected embodiment variant, the modular unit 12 consists of a washing device 3 shown in more detail in FIGS. 7 and 8, a mixing device 4 shown in more detail in FIGS . 20, 21 and 22, a classifying screen 8 not shown in detail and preferably two scooping devices 6 and 7 formed. The selected construction according to the invention of the two plant units washing device 3 and mixing device 4 ensures, in addition to the combination of previously separate process steps such as washing, classifying and mixing, an assembly of the parts outside the frame unit 13 . In this case, two drive rings 23, for example made of sheet steel, and preferably three receiving rings 24 arranged parallel to the drive rings 23 according to FIGS. 9 to 12 are, for example, eight, over the inner circumference of the radially extending ring surfaces 23 'of the drive rings 23 and the ring surfaces 24 ' Receiving rings 24 distributed guide tubes 25 made of unrefined steel tube connected to each other. Ladle cups 29 , which form the two ladle devices 6 and 7 of the washing device 3, are mounted between a drive ring 23 and a receiving ring 24 and between the two further receiving rings 24 over the outer circumference of the annular surfaces 23 'and 24 '. In the guide tubes 25 'of the third receiving ring 24 and the annular surface 23' of the second driving ring 23, screw blades 28 formed 18 and 19 are offset parallel to the annular surface 24 made of steel sheet and bent out of their surface plane W four times, circular segments according to FIG. Postponed . A screw vane 28 is seated in each case on three guide tubes 25, the following wherein the distances between the screw blades 28 are ensured by also aufzusteckende to the guide tubes 25 distance tubes 27 on one of the first three and further on two guide tubes 25 and so on. Completed, the assembled worm blades 28, distributed over the outer circumference of the annular surfaces 23 'and 24 ' according to FIG. 7, form an interrupted transport worm between the third receiving ring 23 and the second drive ring 24 . In the same area, at least two supports 26 of different lengths, for example consisting of a square profile, according to FIGS. 13 to 15 are arranged in a radial direction between the worm blades 28 on preferably each guide tube 25 , on the free end face of which at an acute angle to their longitudinal axis Y each has a flange 26 ''. The shorter pillars 26 are arranged parallel to the annular surface 24 'of the third receiving ring 24 and the supports 26 extended parallel to the annular surface 23' of the second drive ring 23rd Support rods 30 according to FIGS. 16 and 17 are mounted on the flanges 26 ″ of the supports 26 . The support rods 30, which are made, for example, of non-tempered steel pipe, are angled over a definable range at an obtuse angle β to their longitudinal axis Z and have bores 30 'distributed over the entire length, with which they can be attached to the flanges 26 ''of the supports 26 and by means of conventional connecting means with their angled area on the lateral surface 31 'of an annular flange 31 are positively connected such that they form a frustoconical cavity. On the lateral surfaces of the frustoconical cavity, individual elements made of sheet steel are mounted, which in the completed state form a classifying sieve 8 , not shown in the drawings, which can be equipped with differently sized passages, so that classifications according to required grain sizes can be easily implemented. The washing device 3 according to the invention has the great advantage that all parts of the system are not centrally stored, thereby avoiding the considerable wear and tear on the parts of the system caused by the previous central bearings, and the frequent repair work is eliminated and maintenance work is minimized. The frame 32 of the mixing device 4 , formed from supports 33 , supports 34 , tensioning tubes 35 , bridges 36 and plates 37 and sheets 38 according to FIGS. 20 to 22 and made for example from steel profile parts, forms an isosceles quadrilateral in its outer contours, that on its one end face is brought together to form a projecting cylindrical frame part 32 'and is fastened to an annular flange 39 with plates 37 arranged at the end of the cylindrical frame part 32 '. After the mixing device 4 and the washing device 3 are mounted, they are connected to one another via the two ring flanges 31 and 39 . The mixing device 4 according to the invention is characterized by a light construction. Due to the mechanical coupling with the washing device 3 according to the invention, both units can be operated simultaneously by means of a single drive 9 , which results in considerable cost savings when purchasing the drive units and, above all, the saving on maintenance personnel. The drive 9 according to the invention is shown in more detail in FIGS. 25 to 27, the arrangement of its components being particularly emphasized. All components of the drive 9 according to the invention formed from commercially available individual parts or products are arranged on the cross members 20 of the vertical frame planes C and D in the horizontal frame plane F of the frame unit 13 outside the residual concrete to be processed in the basin 16 . The drive 9 is made with only two friction wheels 45, on which the washing device is mounted on both sides 26 with the inner sides of the annular bands 23 '' of the drive rings 23 3 of FIG..

This design considerably minimizes the friction that has been caused up to now by the use of up to six friction wheels 45 . The minimized friction makes it possible to use a drive motor 43 with a significantly lower power volume than before. Nevertheless, the mixing device 4, which can be mechanically coupled to the washing device 3, can be operated simultaneously with this less powerful drive motor 43 . Another advantage is that the friction wheels 45 are mounted on the frame 22 like all other drive components. Compared to the known arrangement of the friction wheels 45 on the inner sides of the two end walls 16 ″ of the basin 16 , the drive 9 according to the invention is given a substantially higher stability, since the load of the washing device 3 is held vertically on the angular profile of the frame 22 , so that the end walls 16 ″ the pool 16 are relieved and maintenance work on the system can be carried out more easily.

After the frame unit 13 has been completed in the room part 13 'with the modular unit 11 and in the room part 13 ''with the basin 16 of the modular unit 12 and the drive 9 , the frame unit 13 can be funded via a room part 13 ''' coarse and fine grain portions to be transported are arranged in the system. In the exemplary embodiment, a divided drainage channel 17 is provided for this purpose, which receives the coarse and fine constituents of the residual concrete conveyed by the two scooping devices 6 and 7 from the pelvic floor 16 'of the pre-washing and post-washing area of the basin 15 , from where they can be used for further use. The divided drainage channel 17 is arranged so that it intersects the vertical planes of the drive ring 23 in the vertical frame plane D and the two receiving rings 24 and extends so far into the space part 13 '' that it ends with the vertical plane of the third receiving ring 24 . Instead of the drainage channel 17 , a conventional conveyor such as a conveyor belt can also be used.

When returning residual concrete, for example from a truck mixer, the vehicle drives up to the feed basin 2 and empties the residual concrete located in the vehicle drum into the feed basin 2 . A vehicle detection arranged at a suitable point triggers the automatic dilution of the residual concrete with rinsing water, its transport to the washing device and, if necessary, the activation of the drive 9 to full power. In this case, washing water is from the clarifying part 10 of the basin 16 'portioned by means of the flushing water pump 5' '' in the task pool 2 and the thus diluted residual concrete by means of the concrete pump 5 'of the object basin 2 via the pressure line 15 in the forward and Nachwäschebereich of the basin 16 to the Washing device 3 transported. The rotating movement of the washing device 3, the coarse particles from the Siebkegel 8 fall on the chute 42 in the pelvis 16 in the Nachwaschbereich behind the partition wall 41, from where they are conveyed by the suction device 6 to the one half of the split conveyor trough 17th The fine-grain constituents of the residual concrete fall to the floor in the prewash area of the basin 16 , from where they are conveyed to the second part of the divided drainage channel 17 by means of the scoop device 7 . The cement-containing water remains in the prewash area of the basin 16 up to the height of the partition 40 . If the water level continues to rise, the cement-containing water runs via the partition 40 into the clarifying part 10 of the basin 16 where it is constantly kept in motion by the rotating movement of the mixing device 4 . From there, the cement-containing water can be by means of the concrete pump 5 'in the manufacturing process are recycled, or by means of the flushing water pump 5' '''over the Spülgalgen 1 for cleaning the vehicle drum or to dilute the residual concrete through the flush water pump 5' '' in the task pool 2 to get promoted. The portioned delivery of diluted residual concrete from the feed basin 2 is controlled by an electronically controlled level indicator in the basin 16 . In this way, the system cannot be overfilled and the drive 9 cannot be overloaded. When the mixer truck is emptied, it thus automatically are when driving away from the object pool 2 contact with the vehicle detection free, a stopping time of the flush water pump 5 '''that is as long as a new set is started, until the performance measurement of the concrete pump 5' ', the flushing water pump 5 '''switches off and the concrete pump 5 ''comes to a standstill. When the concrete pump 5 ″ is switched off, the drive of the divided drainage channel 17 switches off with a time delay and the drive 9 switches over to interval operation, as a result of which the cement-containing water is kept in a uniform suspension. The electronic level monitoring in the basin 16 is designed so that it can be detected and regulated in the concrete plant. If the defined minimum fill level in the basin 16 is undershot, this is regulated by a conventional, and therefore not described in more detail, automatic fresh water make-up. The concrete recycling plant according to the invention is secured by its electronic control and monitoring in such a way that the plant works largely independently of subjective influencing factors and untrained personnel cannot cause material and financial damage due to incorrect operation. Thanks to its modular structure, the system can be adapted to customer-specific conditions and requirements at any time. The automatic switchover of the drive 9 between intermittent operation or full power also ensures high energy savings.

Reference list

1

Dish gallows

1

'' Rinse water supply

2nd

Feed basin

2nd

'' Side wall of the feed basin

2nd

'' Front wall of the feed basin

2nd

'''Back wall of the feed tank

2nd

'''' Consoles

2nd

Grating

3rd

Washing device

4th

Mixing device

5

Conveying units

5

' Concrete pump

5

'' Concrete pump

5

'''Rinse water pump

5

'''' Rinse water pump

6

Scoop

7

Scoop

8th

Classifying sieve

9

drive

10th

Sewage section,

11

modular unit

12th

modular unit

13

Frame unit

13

'' Space part of the frame unit

13

'' Part of the frame unit

13

'' Part of the frame unit

15

Pressure pipeline

16

pool

16

' Pelvic floor

16

'' Front wall of the pelvis

16

'''Side walls of the pool

17th

Drainage channel

18th

Underframe of the frame unit

19th

carrier

19th

'Subcarrier

20th

traverse

21

Pipe support

22

Frame,

23

Drive ring

23

'' Ring surface of the drive ring

23

'' Ring band

23

'''Bores in the drive ring

24th

Receiving ring

24th

'' Ring surface of the receiving ring

24th

'' Holes in the mounting ring

25th

Guide tube

25th

Support

26

'' concave recess in the supports

26

'' Flange on the supports

27

Spacer tubes

28

Snail shovel

28

Breakthroughs in the screw blades

29

Scoop

30th

Support rod

30th

'' Holes in the support rod

31

Ring flange

31

'' End face of the ring flange

32

Framework of the mixing device

32

'' Cylinder on the frame

33

carrier

34

support

35

Tension tube

36

bridge

37

plate

38

sheet

39

Ring flange

40

Partition in the pool

41

Partition in the pool

42

Channel in the pool

43

engine

44

drive shaft

45

Friction wheel

46

Friction wheel shaft

47

console

48

small sprocket

49

large sprocket

50

Roller chain

51

Pressure arm

52

Tuning plate
A vertical plane of the frame unit
B vertical plane of the frame unit
C vertical plane of the frame unit
D vertical plane of the frame unit
E vertical plane of the frame unit
F horizontal plane of the frame unit
G horizontal plane of the frame unit
H horizontal plane of the frame unit
I horizontal level of the frame unit
X central axis of the frame unit
Y longitudinal axis of a column
Z longitudinal axis of a support rod
W Longitudinal axis of a worm shovel

Claims (30)

1. Concrete recycling plant for the reprocessing of residual concrete from unused fresh concrete residues and from residues in the cleaning of concrete production and transport equipment, consisting of a flushing boom ( 1 ), a feed basin ( 2 ), a washing device ( 3 ) with a mixing device ( 4 ) and conveying units 5 ), scooping devices ( 6 , 7 ), classifying sieve ( 8 ), a drive ( 9 ) and a clarifying part ( 10 ), characterized in that the flushing boom ( 1 ), the feed basin ( 2 ) and the conveying units ( 5 ) have one Form a modular unit ( 11 ), the washing device ( 3 ), the mixing device ( 4 ), the classifying sieve ( 8 ) and the scooping devices ( 6 , 7 ) form a modular unit ( 12 ) that the drive ( 9 ) and the modular units ( 11 ) and ( 12 ) are mounted as a modular system on and / or within a flexible frame unit ( 13 ), the modular unit ( 12 ) being completely supported and guided on the drive ( 9 ) enclosed, subdivided, and within one of the frame unit (13) in clarifying part (10) and a first and Nachwäschebereich, separate tank (16) operates automatically controlled by integrated arrangement of conventional electronic controls the entire system and monitors that the drive (9 ) works completely outside of the residual concrete to be recycled and drives all modular units ( 11 ) and ( 12 ). 2. Concrete recycling plant for the recycling of residual concrete according to claim 1, characterized in that the frame unit ( 13 ) from the room parts ( 13 '), ( 13 '') and ( 13 ''') from a base ( 18 ) and one thereon, disposed consisting of carriers (19), cross members (20) and tube supports (21) frame (22) is formed and that the frame (22) by vertical frame planes (A, B, C, D, e) and horizontal framework levels ( F, G, H, I) is subdivided. 3. Concrete recycling plant for reprocessing residual concrete according to claim 2, characterized in that the space part ( 13 ') of the frame unit ( 13 ) through the vertical frame levels (A) and (B) and the horizontal frame levels (F) and ( 1 ) limited and closed by wall surfaces on all sides and that the wall surfaces of the room part ( 13 ') for receiving and fastening the modular unit ( 11 ) with openings for carrying out and fastening various pipelines, pipe bends, connecting flanges, flaps, pipe clamps and brackets ( 2 '''') and a lockable door. 4. Concrete recycling plant for reprocessing residual concrete according to claim 2, characterized in that the space part ( 13 '') of the frame unit ( 13 ) through the vertical frame levels (B) and (D) and the horizontal frame levels (F) and ( 1 ) is limited, the drive ( 9 ) is attached to the frame ( 22 ) in the area of the horizontal frame plane (F), that the modular unit ( 12 ) is mounted between the vertical frame planes (C) and (D) on the drive ( 9 ) and is guided and extends into the separate basin ( 16 ) attached to the base frame ( 18 ) and that the space part ( 13 '') is separably connected to the space part ( 13 ') in the vertical frame plane (B) and in the vertical frame plane (C) is separable. 5. Concrete recycling plant for the recycling of residual concrete according to claim 2, characterized in that the space part ( 13 ''') of the frame unit ( 13 ) through the vertical frame levels (D) and (E) and the horizontal frame levels (F) and ( G) is limited and that a divided drainage channel ( 17 ) is arranged in the room part ( 13 ''') in such a way that it projects into the room part ( 13 '') on the one hand over the vertical plane (D) and on the other hand over the vertical plane (E) protrudes from the room part ( 13 '''). 6. Concrete recycling plant for the reprocessing of residual concrete according to claim 2, characterized in that in the vertical frame plane (D) in the horizontal frame plane (G) a crossmember ( 20 ) and on this by 90 ° offset two beams ( 19 ) and In the vertical frame plane (B) in a central axis (X) to the room part ( 13 '') there is a pipe support ( 21 ) with supporting sub-beams ( 19 '). 7. Concrete recycling plant for reprocessing residual concrete according to claim 1, characterized in that the modular unit ( 11 ) from at least one flushing boom ( 1 ) with electronic vehicle detection, flushing water supply line ( 1 ') and hand switch, the feed basin ( 2 ) with side walls ( 2 '), end wall ( 2 ''), rear wall ( 2 '''), brackets ( 2 '''') and grating ( 2 ''''') and the conveyor units ( 5 ) with concrete pumps ( 5 ', 5 '') and flushing water pumps ( 5 ''', 5 '''') as well as various pipelines, pipe bends, connecting flanges and pipe clamps, whereby all operating parts of the conveying units ( 5 ), except the flushing water supply line ( 1 ') and a pressure pipeline ( 15 ), in the closable space part ( 13 ') of the frame unit ( 13 ). 8. Concrete recycling plant for the recycling of residual concrete according to claim 1, characterized in that the modular unit ( 12 ) with the washing device ( 3 ), the mixing device ( 4 ), the classifying sieve ( 8 ) and the scooping devices ( 6 , 7 ) in such a way is mounted and guided in the room part ( 13 '') on the drive ( 9 ) in such a way that it works in the separate basin ( 16 ) enclosed by the frame unit ( 13 ) rotating about the central axis (X) and within the basin ( 16 ) to a maximum of two thirds of it can be enclosed by the media in it. 9. Concrete recycling plant for the recycling of residual concrete according to claim 1, characterized in that the washing device ( 3 ) with the classifying sieve ( 8 ) and the scooping devices ( 6 , 7 ) by two drive rings ( 23 ), several receiving rings ( 24 ), several Guide tubes ( 25 ), supports ( 26 ), spacer tubes ( 27 ), worm blades ( 28 ), scoops ( 29 ) and support rods ( 30 ) are connected. 10. Concrete recycling plant for recycling residual concrete according to claim 9, characterized in that the drive rings ( 23 ) each consist of a radially extending ring surface ( 23 '), the outer edge of which is formed by a ring band ( 23 ') formed at right angles to the ring surface ( 23 ') ''), has 23 wherein the annular surface ( ')' distributed) holes (23 'in one and / or two circular planes at equal intervals on the annular surface (23' ') has. 11. Betonrecycling- plant for the reprocessing of residual concrete according to claim 9, characterized in that the receiving rings (24) 'that consist in two circular planes evenly over the ring surface (24 of a radially extending annular surface (24) is distributed bores (24)' ') exhibit. 12. Concrete recycling plant for the reprocessing of residual concrete according to claim 10 and 11, characterized in that the bores ( 23 ''') and ( 24 '') on the outer circular plane of the annular surfaces ( 23 ') and ( 24 ') on both sides of the scoop ( 29 ) and the bores ( 23 ''') and ( 24 '') of the ring surfaces ( 23 ') and ( 24 ') of the drive rings ( 23 ) and the receiving rings ( 24 ) on both sides of the inner circular plane guide tubes ( 25 ) . 13. Concrete recycling plant for the reprocessing of residual concrete according to claim 9, characterized in that the supports ( 26 ) on the end face on the one hand a concave recess ( 26 ') and on the other hand at an acute angle () to the longitudinal axis (Y) of the supports arranged flange ( 26 '') have two different lengths and that each have two different long supports ( 26 ) at a defined distance from each other on the one hand with the concave recess ( 26 ') on one of the guide tubes ( 25 ) and on the other hand each on one of the Support rods ( 30 ) are attached, the shorter supports ( 26 ) parallel to the vertical frame plane (D) and the longer supports ( 26 ) parallel to the vertical frame plane (C). 14. Concrete recycling plant for the recycling of residual concrete according to claim 9, characterized in that each support rod ( 30 ) at one end with an obtuse angle () to the longitudinal axis (Z) of the support rod ( 30 ) angled over a defined area and with several holes ( 30 ') is provided, at least two bores ( 30 ') being arranged at the angled end and further bores ( 30 ') distributed over the entire length of the support rod ( 30 ). 15. Concrete recycling plant for reprocessing residual concrete according to claim 14, characterized in that the angled region of the support rod ( 30 ) on an end face ( 31 ') of an annular flange ( 31 ) and the remaining part of the support rod ( 30 ) on the flanges ( 26 '') of the supports ( 26 ) is releasably attached. 16. Concrete recycling plant for the reprocessing of residual concrete according to claim 15, characterized in that several on the end face ( 31 ') of the ring flange ( 31 ) distributed over the circumference of the end face ( 31 ') and arranged on the flanges ( 26 '') the supports ( 26 ) attached support rods ( 30 ) form a funnel-shaped cavity in which the classifying sieve ( 8 ) is interchangeably inserted. 17. Concrete recycling plant for the reprocessing of residual concrete according to claim 9, characterized in that the screw blades ( 28 ) each consist of an annular surface segment which is broken four times against and parallel to a longitudinal axis (W) and one in the middle and at the two ends Breakthrough ( 28 ') and that the worm blades ( 28 ) are stuck at defined intervals by means of the openings ( 28 ') on always three guide tubes ( 25 ), the defined distances between the worm blades ( 28 ) of different lengths Guide tubes ( 25 ) arranged spacer tubes ( 27 ) are determined. 18. Concrete recycling plant for the reprocessing of residual concrete according to claim 17, characterized in that several with screw blades ( 28 ), spacer tubes ( 27 ), supports ( 26 ), support tubes ( 30 ) and receiving rings ( 24 ) with scooping buckets ( 29 ) equipped guide tubes ( 25 ) are connected to each other on both sides with a drive ring ( 23 ). 19. Concrete recycling plant for the recycling of residual concrete according to claim 1, characterized in that the mixing device ( 4 ) is a frame ( 32 ) consisting of a number of supports ( 33 ), supports ( 34 ), tensioning tubes ( 35 ), bridges ( 36 ) and plates ( 37 ) and sheets ( 38 ) is formed 20. Concrete recycling plant for the recycling of residual concrete according to claim 19, characterized in that the frame frame ( 32 ) stabilized by cross-shaped tensioning tubes ( 35 ) runs on one side around the tube support ( 21 ) of the frame ( 22 ) and on the opposite side has an open cylindrical frame part ( 32 ') which is fastened with plates ( 37 ) to an annular flange ( 39 ). 21. Concrete recycling plant for the reprocessing of residual concrete according to claim 7, characterized in that in the vertical plane (B) from the room part ( 13 ') of the frame unit ( 13 ) into the room part ( 13 '') led pressure pipe ( 15 ) held on the pipe support ( 21 ) of the frame ( 22 ), through the ring flange ( 39 ) of the mixing device ( 4 ) and the ring flange ( 31 ) of the washing device ( 3 ) and behind the plane of the ring flange ( 31 ) in the area of the classifying screen ( 8 ) ends. 22. Concrete recycling plant for the recycling of residual concrete according to claim 1, characterized in that the separate basin ( 16 ) has a trough-like shape, from a semicircular bottom ( 16 '), two end walls ( 16 '') and two side walls ( 16 ''') and that in the interior of the basin ( 16 ) parallel to the end walls ( 16 '') two partition walls ( 40 ) and ( 41 ) and parallel to the side walls ( 16 ''') a groove ( 42 ) is arranged . 23. Concrete recycling plant for the reprocessing of residual concrete according to claim 22, characterized in that the partition ( 40 ) vertically to the semicircular floor ( 16 ') is carried out at a height which corresponds to approximately two thirds of the pool height and between the mixing device ( 4th ) and the washout (3) separates the basin (16) into the clarifying part (10) and the advantages and Nachwäschebereich the washout (3). 24. Concrete recycling plant for the reprocessing of residual concrete according to claim 22, characterized in that the partition ( 41 ) is arranged vertically to the semicircular bottom ( 16 ') at a height which corresponds approximately to the depth of the beaker ( 29 ) and that it is between the two scooping devices ( 6 ) and ( 7 ) separate the basin ( 16 ) into the pre-washing and post-washing chamber of the washing device ( 3 ). 25. Concrete recycling plant for the reprocessing of residual concrete according to claim 22, characterized in that the channel ( 42 ) in the lower third and at right angles to the end wall ( 16 '') is arranged in the frame plane (D) of the basin ( 16 ) and completed Condition of the system crosses the vertical planes of a drive ring ( 23 ) and several receiving rings ( 24 ) and protrudes into the pool area to such an extent that it takes up the coarse components of the residual concrete from the cone of the classifying sieve ( 8 ). 26. Concrete recycling plant for recycling residual concrete according to claim 1, characterized in that the drive ( 9 ) from a motor ( 43 ), a drive shaft ( 44 ), two friction wheels ( 45 ) on friction wheel shafts ( 46 ), brackets ( 47 ) is formed with rollers, small sprockets ( 48 ) and large sprockets ( 49 ), roller chains ( 50 ), chain tensioners, chain guards, pressure arms ( 51 ) with tuning plates ( 52 ) as well as various holders, plates and flanges and in the horizontal frame plane (F) is mounted on the frame ( 22 ). 27. Concrete recycling plant for recycling residual concrete according to claim 26, characterized in that on the horizontal frame plane (F) in the region of the vertical frame planes (C) and (D) on the frame ( 22 ) each have a friction wheel shaft ( 46 ) parallel to the horizontal Frame level (F) is mounted, on each of which a friction wheel ( 45 ) and a large sprocket ( 49 ) are arranged at one end, the two friction wheels ( 45 ) protruding into the space ( 13 '') and the assembled modular unit ( 12 ) with the inner surface of a ring band ( 23 '') of the drive rings ( 23 ). 28. Concrete recycling plant for the reprocessing of residual concrete according to claim 26, characterized in that the drive shaft ( 44 ) is guided parallel to the horizontal plane (F) in the vertical frame plane (C) and (D) in a bearing block, the A small sprocket ( 48 ) is arranged at the extended ends of the drive shaft ( 44 ) and the small sprockets ( 48 ) rotate the motor ( 43 ) via the drive shaft ( 44 ) through a roller chain ( 50 ) onto the large sprockets ( 49 ). transmitted, whereby the friction wheel shafts ( 46 ) and the friction wheels ( 45 ) arranged thereon rotate and transmit the rotary movement via the drive rings ( 23 ) to the modular unit ( 12 ). 29. Concrete recycling plant for the reprocessing of residual concrete according to claim 26, characterized in that on the horizontal frame level (F) in the area of the two vertical frame levels (C) and (D) in the space part ( 13 '') directed two consoles ( 47 ) are arranged with rollers so that the rollers press against the outer surface of the ring belts ( 23 '') and the drive rings ( 23 ) guide and hold against the friction wheels ( 45 ). 30. Concrete recycling plant for reprocessing residual concrete according to claim 26, characterized in that on the horizontal frame plane (F) in the area of the two vertical frame planes (C) and (D) in the space part ( 13 '') directed two pressure arms ( 51 ) are arranged with tuning plates ( 52 ) so that they press against the ring surfaces ( 23 ') and guide the two drive rings ( 23 ) radially.