Grouting plants: mixer, agitator and pump

If one of the three is too small, the whole chain stops there. That is why it pays to look at the plant as a whole, not as three separate purchases.

The mixer makes the grout

The Häny HCM series ranges from 100 to 2 500 litres of usable capacity. The mixing capacity at w/c = 1 ranges from 2 to 40 m³/h, and the power from 3 to 45 kW.

• HCM 100 — 100 l, approx. 2 m³/h, circulation 540 l/min, 3 kW, max. aggregate size 5 mm
• HCM 300 — 260 l, approx. 5 m³/h, circulation 1 400 l/min, 9.2 kW, max. 8 mm
• HCM 600 — 550 l, approx. 8 m³/h, circulation 1 400 l/min, 9.2 kW, max. 8 mm
• HCM 800 — 800 l, approx. 20 m³/h, circulation 2 400 l/min, 22 kW, max. 3 mm
• HCM 2500 — 2 500 l, approx. 40 m³/h, circulation 4 800 l/min, 45 kW

Aggregate size does not increase with machine size

Look at the aggregate size in the list above. The HCM 300 and HCM 600 take 8 mm, while the larger HCM 800 is stated at 3 mm. So a larger mixer does not automatically take coarser aggregate.

This has to be right throughout the chain: the pumps in the ZMP series are rated for a max. aggregate size of 5 to 8 mm. If the grout is coarser than the weakest link can handle, that is where it stops.

The agitator keeps the grout alive

The HRW series ranges from 150 to 3 000 litres and uses little power — 0.55 to 3.0 kW. It does not make the grout, but keeps it homogeneous and removes air bubbles while it waits.

• HRW 350 — 350 l, 0.55 kW, paddle 46.7 rpm, inlet and outlet 2½"
• HRW 800 — 800 l, 0.55 kW, paddle 46.7 rpm
• HRW 1200 — 1 050 l, 1.5 kW, 34 rpm, inlet 2½" and outlet 2"
• HRW 2000 — 2 000 l, 3.0 kW, 32 rpm, inlet 3" and outlet 2"
• HRW 3000 — 3 000 l, 3.0 kW, 32 rpm, inlet 4" and outlet DN100 / PN16

Ready assembled: the IC series

If you do not want to put the plant together yourself, there is the IC series: compact plants where the mixer, agitator and pump are already matched to each other and mounted on the same frame. The series ranges from IC 310 to IC 1400, with 1.5–8.0 m³/h, up to 100 bar and 9.1–39.8 kW.

IC 650/710 is an example of how such a plant is put together: ZMP 710 pump, HCM 300 mixer with 260 litres and 1 400 l/min circulation, and HRW 350 agitator with 350 litres. Together they give 5 m³/h at w/c = 1, max. aggregate size 8 mm, 17.5 kW at 50 Hz and a weight of 1 180 kg. The plant measures 2 365 × 1 800 × 1 737 mm.

Water and cooling are separate connections

On the IC 650/710, the water connection is BSP 1" and the pressure connection BSP 2". In addition, the plant needs 3–4 l/min of cooling water on a separate BSP ½" connection, and the hydraulic tank holds 140 litres. These are practical things that need to be in place at the rig site.

Documenting what has been grouted

The DPV-H recording system is available in several versions, from a simple pressure recorder to a fully electronic unit, and the electronic version measures pressure and flow at up to four grouting points. The volume is measured either with an inductive flow meter or by pulse counting from the pump, displayed graphically on screen and in real time on a PC, and stored on a USB memory stick. An evaluation program for PC is included.

When the plant needs to be larger

Above the IC series are FAIC, automatic plants with 5–12 m³/h depending on the mix and a dosing accuracy by weighing of under ±3%, and MCM, containerised plants with 12–90 m³/h mixing capacity and 25–140 kW. If you need to go that big, talk to us first about what is to be grouted.