High-pressure valve for an atomizing nozzle, and method for rinsing a high-pressure valve
AssigneeLuebbers Anlagen- Und Umwelttechnik GmbH
InventorMATTHIAS LUEBBERS
Life of this patent
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Abstract
A high-pressure valve for a spray nozzle. The high-pressure valve includes a valve inlet, a valve outlet to which the spray nozzle is attachable, a fluid connection which connects the valve inlet to the valve outlet, a movable piston, a tappet which is arranged in the fluid connection, and a flushing apparatus which flushes the high-pressure valve and/or the spray nozzle with a flushing liquid. The tappet moves between a closed position and an open position via the movable piston. A spray liquid reaches the valve outlet and/or the spray nozzle from the valve inlet via the fluid connection when the tappet is in the open position.
Claims14
1-13. (canceled)
14:
- A high-pressure valve for a spray nozzle, the high-pressure valve comprising:
- a valve inlet;
- a valve outlet which is configured to have the spray nozzle be attachable thereto;
- a fluid connection which connects the valve inlet to the valve outlet;
- at least one first movable piston;
- a tappet which is arranged in the fluid connection, the tappet being configured to move between a closed position and an open position via the at least one first movable piston, wherein, a spray liquid reaches at least one of the valve outlet and the spray nozzle from the valve inlet via the fluid connection when the tappet is in the open position;
- and
- a flushing apparatus which is configured to flush at least one of the high-pressure valve and the spray nozzle with a flushing liquid.
15:
- The high-pressure valve as recited in claim 14, wherein the flushing apparatus comprises at least one of a flushing-liquid inlet and a flushing apparatus non-return valve.
16:
- The high-pressure valve as recited in claim 14, wherein the flushing apparatus is arranged at the fluid connection so that the flushing liquid emerges at the tappet perpendicular to a longitudinal orientation of the tappet.
17:
- The high-pressure valve as recited in claim 14, wherein the high-pressure valve is configured for a pressure in a range of from 10 MPa to 50 MPa.
18:
- The high-pressure valve as recited in claim 14, further comprising:
- a ventilation tappet which is arranged in the fluid connection;
- and
- a second movable piston which is configured to move the ventilation tappet.
19:
- The high-pressure valve as recited in claim 18, wherein at least one of the at least one first movable piston and the second movable piston are provided as a double-acting piston.
20:
- The high-pressure valve as recited in claim 18, further comprising:
- a pressure outlet which is connected to the ventilation tappet.
21:
- The high-pressure valve as recited in claim 18, further comprising:
- a gas inlet;
- and
- a gas-inlet non-return valve,
- wherein,
- the ventilation tappet is connected to at least one of the gas inlet and to the gas inlet non-return valve.
22:
- The high-pressure valve as recited in claim 18, wherein the ventilation tappet is arranged in the fluid connection in a flow direction of the spray liquid behind the tappet.
23:
- The high-pressure valve as recited in claim 18, further comprising:
- at least one inductive sensor which is configured to determine a position of at least one of the at least one first movable piston, the second movable piston, the tappet, and the ventilation tappet.
24:
- A method for subsequently cleaning the high-pressure valve as recited in claim 14, wherein the high pressure valve further comprises a pressure outlet which is connected to the ventilation tappet, the method comprising:
- terminating an external supply of the spray liquid to the valve inlet of the high-pressure valve;
- moving the tappet into the closed position via the at least one first movable piston so that the valve inlet is closed and the flushing-liquid inlet is open;
- relieving a pressure on the high-pressure valve by opening the ventilation tappet via the second movable piston and dissipating the pressure via the pressure outlet;
- supplying the flushing liquid through at least one of the flushing-liquid inlet and the flushing apparatus non-return valve into the fluid connection of the high-pressure valve so as to flush the pressure outlet;
- closing the ventilation tappet via the second movable piston so as to close the pressure outlet;
- and
- supplying additional flushing liquid so that at least one of the fluid connection, the tappet, the ventilation tappet, and the spray nozzle are flushed via the flushing liquid.
25:
- The method as recited in claim 24, wherein water having a pressure in a range of from 5 MPa to 25 MPa is used as the flushing liquid.
26:
- The method as recited in claim 24, wherein,
- the high pressure valve further comprises:
- a gas inlet;
- and
- a gas inlet non-return valve,
- wherein,
- the ventilation tappet is connected to at least one of the gas inlet and to the gas inlet non-return valve, and,
- after the subsequent cleaning, the method further comprises:
- drying the high-pressure valve by introducing a gas at least one of through the gas inlet and via the gas inlet non-return valve.