Twin-shaft mixing technology is suitable for all formulas and offers a wide range of benefits. The mixing procedure has a significant effect on the quality of the mixture produced and the economic efficiency of the production process. Watch the video and learn more about major projects from around the world where the twin-shaft batch mixer (DKX) has proven itself under the most difficult conditions.
In contrast to the circular motion of other mixing systems, the three-dimensional mixing principle of the twin-shaft batch mixer produces a more intensive exchange of material, which leads to shorter mixing times while consuming less energy.
BHS worm gears boast maximum operational reliability and a long service life, even under extreme loads. The gearboxes are attached to the mixing shafts without rigid connection to the mixing trough. Careful material pairing allows the BHS worm gearbox to compensate for the load changes that occur each time the mixer is filled.
All of our twin-shaft batch mixers are equipped with high-quality motors. They are specifically designed for the load cycles generated.
The power is transferred via V-belt drives. Positioning the V-belt drives on the outside of the drive provides good accessibility when performing maintenance work.
The adjustable torque support is used for the alignment of the gearboxes. It also allows the gearbox to be fastened to the mixing trough without pressure, avoiding unnecessary loads on the gearbox toothing. This special feature is an essential prerequisite for achieving a long gearbox life.
A low-maintenance elastic coupling is installed between the gearboxes to synchronize the two mixer shafts.
The hydrodynamic fluid coupling prevents both mechanical and electrical load peaks. Its use is recommended in particular if unstable electricity supply conditions prevail on site.
The mixer shafts are reliably sealed with axial face seals. The shaft bearings are mounted on bearing lanterns and are physically separated from the shaft seals. This significantly increases the operational reliability of the mixer shaft bearings.
With our comprehensive range of twin-shaft batch mixers, we offer the right solution for any requirement, thus making our products a safe investment at all times. Depending on the application, you can choose between the following mixers:
In addition, we offer mixers with a wide range of configuration options for mixing units, drives, discharge options etc. to address an even grater range of application scenarios.
|Ready-mixed concrete with input size up to 64 mm||✔||✔|
|Specialty concrete grades||✔||✔|
|Heavy concrete > 2.4 t/m³||✔||✔|
|Coarse-grained mixtures up to 160 mm, depending on machine size||✔|
|Mixtures for concrete block production||✔||✔|
Concrete paving block
The production of concrete for paving blocks requires highly reliable mixing technology with consistently high levels of homogeneity. The filigree top layer, in particular, requires extremely homogeneous concrete to minimize rejects. The proven twin-shaft batch mixer (type DKX) has been configured by BHS accordingly. The result is a special mixer configuration for concrete blocks with adapted speed, accurate humidity measurement and water dosing, as well as a smooth mixing system and a high-pressure cleaning facility.
Smooth mixing unit, three-dimensional mixing principle and maximum reliability: Efficiency and quality go hand in hand at BHS. The mixer is the key component in the production of concrete paving blocks. Our proven twin-shaft batch mixer can adapt flexibly to your needs and requirements and mix even small batches reliably. Watch the video to learn more about the twin-shaft batch mixer (DKX) in use at the concrete block factory of Excluton.
The production of sand-lime blocks requires highly reliable mixing technology with consistently high levels of homogeneity. The BHS twin-shaft batch mixer (type DKXK) meets these requirements while ensuring fast mixing times and reliable, reproducible results. Colors, too, are distributed quickly among the mixing material without leaving any streaks. Due to its design, the twin-shaft batch mixer of type DKXK is less prone to wear and tear than conventional mixing systems. Its rubber trough makes the DKXK ideally suitable for operation as a main mixer for highly abrasive sand-lime blocks. Twin-shaft batch mixers of the DKXK series are available with capacities ranging from 1,000 to 6,500 liters.
Our patented Combimix system transforms the BHS twin-shaft batch mixer into a mixer that operates continuously according to the proven twin-shaft technology and allows for adjusting the mixing time. This improves the performance up to 60% compared to batch mixing processes.
Perfect for your concrete laboratory: Our twin-shaft batch mixer in a configuration that produces about 60 l of hardened concrete per batch. The complete mixer is scaled down so that it achieves meaningful test results that are reproducible in the actual production machines.
We can adapt our twin-shaft batch mixers so that a vacuum can be applied during the mixing process. This makes it possible, among other applications, to produce a mixture with particularly low air void contents.
Diamond-shaped tiles with a material thickness of 19 mm made from optimized chrome chilled cast alloy can be used as mixing trough lining. The service life improves by up to 30 % compared to rectangular tiles.
We offer rhombus-shaped tiles with a material thickness of 28 mm for high-wear applications. The variable hardness of the individual tile rows ensures uniform abrasion across all wear zones. This nearly doubles the service life compared to the 19-mm rhombic tiles.
The central lubrication system continuously supplies the internal mixing trough seals with grease during mixing operation. Manual lubrication of the seals is only necessary after each mixer cleaning.
The impulse-driven central lubrication system supplies the internal axial face seals with grease. After mixer cleaning or when required, lubrication of the seals can be triggered via the control unit at the push of a button. The running time is freely adjustable.
The lubrication points of the four axial face seals, the four internal mixer trough seals (and, as an option, the other lubrication points of the mixer) are automatically supplied with grease via a PLC controller and by means of a progressive distributor. To lubricate the system after mixer cleaning, it is sufficient to trigger the grease pump via the PLC control.
Our twin-shaft batch mixers can be equipped with measuring probes from all major manufacturers for measuring the moisture or temperature of the mixture. Due to its design and the intensive, three-dimensional movement of the mixed material, the twin-shaft batch mixer provides particularly reliable measuring results.
|Maximum compacted concrete output||Standard
|Maximum aggregate size|
|Open truck discharge 2)||Quality concrete||Hydro dam concrete4)|
|DKX 0.50||0,75 m³||0,5 m³||73 cycles/h||37 m³/h||73 cycles/h||37 m³/h||15 kW||64 mm||-|
|DKX 0.75||1,13 m³||0,75 m³||65 cycles/h||49 m³/h||65 cycles/h||49 m³/h||22 kW||64 mm||-|
|DKX 1.00||1,5 m³||1 m³||58 cycles/h||58 m³/h||60 cycles/h||60 m³/h||37 kW||64 mm||80 mm|
|DKX 1.25||1,88 m³||1,25 m³||53 cycles/h||66 m³/h||53 cycles/h||66 m³/h||45 kW||64 mm||125 mm|
|DKX 1.67||2,51 m³||1,67 m³||48 cycles/h||80 m³/h||49 cycles/h||82 m³/h||55 kW||64 mm||125 mm|
|DKX 2.00||3 m³||2 m³||49 cycles/h||98 m³/h||53 cycles/h||106 m³/h||65 kW||64 mm||150 mm|
|DKX 2.25||3,38 m³||2,25 m³||46 cycles/h||104 m³/h||50 cycles/h||113 m³/h||65 kW||64 mm||150 mm|
|DKX 2.50||3,75 m³||2,5 m³||48 cycles/h||120 m³/h||56 cycles/h||140 m³/h||75 kW||64 mm||150 mm|
|DKX 2.75||4,13 m³||2,75 m³||46 cycles/h||127 m³/h||55 cycles/h||151 m³/h||2 x 45 kW||64 mm||150 mm|
|DKX 3.00||4,5 m³||3 m³||44 cycles/h||132 m³/h||53 cycles/h||159 m³/h||2 x 55 kW||64 mm||150 mm|
|DKX 3.33||5 m³||3,33 m³||41 cycles/h||137 m³/h||50 cycles/h||167 m³/h||2 x 65 kW||64 mm||150 mm|
|DKX 3.50||5,25 m³||3,5 m³||42 cycles/h||147 m³/h||52 cycles/h||182 m³/h||2 x 55 kW||64 mm||160 mm|
|DKX 4.00||6 m³||4 m³||39 cycles/h||156 m³/h||49 cycles/h||196 m³/h||2 x 65 kW||64 mm||160 mm|
|DKX 4.50||6,75 m³||4,5 m³||37 cycles/h||167 m³/h||51 cycles/h||230 m³/h||2 x 75 kW||64 mm||160 mm|
|DKX 5.00||7,5 m³||5 m³||35 cycles/h||175 m³/h||50 cycles/h||250 m³/h||2 x 90 kW||64 mm||160 mm|
|DKX 6.00||9 m³||6 m³||31 cycles/h||186 m³/h||48 cycles/h||288 m³/h||2 x 110 kW||64 mm||160 mm|
|DKX 7.00||10,5 m³||7 m³||28 cycles/h||196 m³/h||44 cycles/h||308 m³/h||4 x 75 kW||64 mm||160 mm|
|DKX 8.00||12 m³||8 m³||26 cycles/h||208 m³/h||43 cycles/h||344 m³/h||4 x 90 kW||64 mm||160 mm|
|DKX 9.00||13,5 m³||9 m³||24 cycles/h||216 m³/h||43 cycles/h||387 m³/h||4 x 110 kW||64 mm||180 mm|
|DKX 0.50||2.310 mm||1.275 mm||1.655 mm||1.550 mm||1.470 mm||1.000 mm||3.100 kg|
|DKX 0.75||2.540 mm||1.500 mm||1.880 mm||1.550 mm||1.470 mm||1.000 mm||3.600 kg|
|DKX 1.00||2.400 mm||1.230 mm||1.570 mm||2.040 mm||1.830 mm||1.200 mm||4.040 kg|
|DKX 1.25||2.590 mm||1.500 mm||1.840 mm||2.040 mm||1.885 mm||1.200 mm||5.200 kg|
|DKX 1.67||2.920 mm||1.765 mm||2.105 mm||2.040 mm||1.940 mm||1.200 mm||5.700 kg|
|DKX 2.00||2.590 mm||1.480 mm||1.900 mm||2.470 mm||2.040 mm||1.400 mm||7.500 kg|
|DKX 2.25||2.850 mm||1.740 mm||2.160 mm||2.470 mm||2.040 mm||1.400 mm||8.100 kg|
|DKX 2.50||3.100 mm||1.990 mm||2.410 mm||2.470 mm||2.070 mm||1.400 mm||9.000 kg|
|DKX 2.75||3.150 mm||1.990 mm||2.410 mm||2.470 mm||2.080 mm||1.400 mm||9.600 kg|
|DKX 3.00||3.410 mm||2.250 mm||2.670 mm||2.470 mm 6)||2.080 mm||1.400 mm||10.200 kg|
|DKX 3.33||3.410 mm||2.250 mm||2.670 mm||2.470 mm||2.110 mm||1.400 mm||10.400 kg|
|DKX 3.50||3.250 mm||1.995 mm||2.400 mm||2.855 mm||2.320 mm||1.650 mm||13.400 kg|
|DKX 4.00||3.500 mm||2.255 mm||2.660 mm||2.855 mm||2.320 mm||1.650 mm||14.000 kg|
|DKX 4.50||4.270 mm||2.510 mm||2.915 mm||2.855 mm||2.400 mm||1.650 mm||14.700 kg|
|DKX 5.00||4.260 mm||2.410 mm||2.870 mm||3.180 mm||2.760 mm||1.950 mm||22.000 kg|
|DKX 6.00||4.790 mm||2.940 mm||3.400 mm||3.180 mm||2.800 mm||1.950 mm||24.000 kg|
|DKX 7.00||5.290 mm||3.475 mm||3.935 mm||3.180 mm||2.590 mm||1.950 mm||29.000 kg|
|DKX 8.00||5.440 mm||3.475 mm||3.935 mm||3.180 mm||2.800 mm||1.950 mm||34.000 kg|
|DKX 9.00||5.980 mm||4.010 mm||4.470 mm||3.180 mm||2.800 mm||1.950 mm||37.000 kg|