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Lackeby Piston press

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Lackeby Piston press combine the good dewatering capacity of a screw press with the capability of a hydraulic press to lift and transport the dewatered material. This is made possible by the drive system’s flexibility.


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Function

The piston in the press housing is driven forward by a worm gear or flat gear motor and a trapezoidal threaded shaft. On the piston there is a guiding pin, which activates the microswitches positioned at each end of the piston stroke. The forward microswitch steers the piston’s turning point to a press zone with openings for high dewatering or past the openings if a less dry material is required. Maximum dewatering can be achieved by extending the interval in the press zone. Extra microswitches at each end ensure that the piston does not go too far if any of the ordinary microswitches malfunctions.

To create the resistance required for dewatering, the piston press should be connected to a press pipe with a lifting height, or a short press pipe with an adjustable counter-pressure device. Press water and flushing water is collected in a fixed trough underneath the press housing.

Design

Lackeby Piston press is available in two models and are manufactured as standard in stainless steel (1.4301) or (1.4436)

PP 200: Press housing with 200 mm diameter, hopper-opening 500×200 mm, motor power 1.1 kW, normal capacity 0.3-0.5 m3/h and an outgoing dry substance rated at approx. 25%.

PP 250: Press housing with 250 mm diameter, hopper-opening 400×250 mm, motor power 1.5 kW, normal capacity 0.5-0.7 m3/h and an outgoing dry substance rated at approx. 25%.

For special applications, Lackeby Piston press can be supplied with a range of motor powers to meet increased requirements for lifting height or capacity. Lackeby Products also manufactures and customises a number of practical accessories for Lackeby Piston press such as; discharge chutes, regulator cones, pressure pipes, spring-loaded counter forces, sack magazines and
electric control cabinets.

References

Lackeby Products has supplied more than 300 Lackeby Piston presses to both industrial and
municipal plants worldwide.

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