Operating instructions DPK 6207…
© BA_DPK_EN_Rev06-2010.docx Page 2 of 18
1 Description
JAUDT double shuttle valves (DPK) are used for the infeed and outfeed of dust-like, fine and coarse bulk
goods which are fed to the double shuttle valve in pre-metered volumes.
JAUDT double shuttle valves are suitable for use under filters, separators, cyclones etc, as well as
outfeeding against a slight pressure difference to avoid a continual secondary air flow.
JAUDT double shuttle valves close in a product-tight manner and are robust and low-maintenance.
The dimensions must be designed sufficiently large to avoid product blockages.
Drive mechanisms for JAUDT double shuttle valves:
1. Electromotive actuation
2. Pneumatic actuation
3. Weight actuation
Functionality of electric-motor driven version with cam disc (Figure 1):
The opening and closing movement is controlled via an electric-motor driven cam disc (80). The closing
force is generated through balancing weights (110). The geometry of the cam disc defines and also
guarantees the overlapping of the two sealing discs (30) – that means that both valves are briefly closed
before one of the two sealing discs opens again. This ensures that both sealing discs are never open at the
same time.
The drive system is blockade-proof, as the transmission of power as the sealing disc opens is performed via
a direct-action slip clutch (drag handle). Once the slip clutch has been actuated, a status message can be
set using initiators.
The double shuttle valve can still continue to be operated even after the actuation of the slip clutch, but the
opening angle of the sealing discs diminishes.
The closing movement is also performed in an overload-proof manner thanks to the weight actuation.
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