CM Compact Diaphragm Pumps
Specialized diaphragm pumps for difficult media
ABEL CM piston diaphragm pumps are single or double-acting pumps that are used for difficult media. They are highly resistant to wear, even when used at high pressures over an extended period of time. Their true double-diaphragm technology offers a high degree of safety. When used as a pump for feeding filter presses, the rugged, automatic flow rate control (which does not use complex electronics) is another impressive feature that makes it even more reliable.
ABEL compact diaphragm pumps are characterized by particularly smooth running, which results from the choice of valve material. CM pumps are supplied with polyurethane valve balls and polyethylene or polyurethane seats as standard. Of course, many other combinations are available. Cone valves are also available as an alternative to ball valves.
Greater operational safety thanks to double diaphragm technology: In the event the product or hydraulic medium penetrates into the intermediate space of the double diaphragm, it is immediately detected by the integrated control function before the product gets into the hydraulic media or vice versa. Alternatively, an automatic alarm is activated by an electrical control.
Technical Specifications
- Max. Flow: 30 m³/h (130 GPM)
- Max. Pressure: 2.5 MPa (362 psi)
- ATEX design available
Housing
- Nodular cast iron
- Stainless steel
- Rubber lined
- Polypropylene
Applications
- Sludge/Fluid Transfer
- Filter Press Feed
- Rotary Kiln Feed
- Spray Dryer Feed
Technical Advantages of the Compact Diaphragm Pump
Membrane Filter Press Feed
On the plant there is a new, recently built, disposal plant for mineral and, in part, for organic drilling slurry: The drilling slurry with a solid content of 15-20% is brought to the plant in tank trucks from which it is pumped through a screening system (ensuring the separation of sand and stones) into 8 storage basins equipped with agitators.
Use of Compact Diaphragm Pumps
In a 24/7 operation, 4 membrane filter presses are fed with 8 ABEL compact diaphragm pumps type CM-G-C262 (each pump delivers a flow rate of 10 m³/h). The pumps are in charge of filling the filter presses with abrasive slurries quickly and reliably/constantly. When the pressure of approx. 8-9 bar is reached, the membrane filter presses take over and continue the dewatering of the slurries until the pressure of approx. 13 bar is reached.
Low Electricity Costs thanks to high Energy Efficiency
The filling time and the pressing time take approx. 1 hour each. Consequently, after 2 hours the filter cake has reached a solid content of up to 80% and can be dumped into the container standing below the filter press. The weight of the filter cake amounts to approx. 2.7 t per batch. The use of ABEL CM pumps has quickly shown that the overall energy consumption of the plant was very low. According to our customer, 20,000 tons slurry have been treated in 2020 with a power consumption of 22,000 kWh, this translates into a unit electricity consumption of 1.1 kWh/ton only. ). In 2023, a further reduction to below 1 kWh/t was achieved.
