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US 10,502,330 B2Granted
Safety valve
AssigneeGEA Farm Technologies GmbH
InventorReinhard Balkenhol
Life of this patent
Estimating the term…
Abstract
A safety valve for a cleaning device for a milking installation for milking milk-providing animals having a pair of block valves, a bleed valve, a sliding hollow piston, and a drive unit that are adjustable between a blocking position in which the blocking valves are closed and the bleed valve is open and a throughput position in which the blocking valves are open and the vent valve is closed.
Claims13
A dairy installation safety valve comprising:
- a valve body defining a bore, an intake in communication with the bore, an exhaust in communication with the bore, and a bleed opening in communication with the bore, and an additional opening in communication with the bore;
- a first spacer disposed in the bore and in communication with the intake;
- a second spacer disposed in the bore and in communication with the exhaust, and the second spacer is sealed from the first spacer;
- a third spacer disposed in the bore and in communication with the bleed opening, and the third spacer is sealed from the first spacer and the second spacer;
- a fourth spacer disposed in the bore and in communication with the additional opening and is sealed from the first spacer, the second spacer, and the third spacer;
- and
- a piston slidably disposed in:
- the bore, the first spacer, the second spacer, the third spacer;
- and the fourth spacer for movement between a blocking position and a throughput position;
- and
- the piston defines a cavity, a first opening, and a second opening;
- and
- in the throughput position the first opening is in communication with the intake and the cavity and the second opening is in communication with the exhaust, the cavity, and the first opening, and the bleed opening is closed, and the additional opening is closed;
- and
- in the blocking position, the first opening is in communication with the third spacer and the cavity and the bleed opening and the second opening is in communication with the fourth spacer and the cavity and the additional opening.
12 more elements
A dairy installation safety valve comprising:
- a valve body defining a bore, an intake in communication with the bore, an exhaust in communication with the bore, a bleed opening in communication with the bore, and an additional opening in communication with the bore;
- a first spacer disposed in the bore and in communication with the intake;
- a second spacer disposed in the bore and in communication with the exhaust, and the second spacer is sealed from the first spacer;
- a third spacer disposed in the bore and in communication with the bleed opening, and the third spacer is sealed from the first spacer and the second spacer;
- a fourth spacer disposed in the bore and in communication with the additional opening;
- a nozzle joined to and defining a constricting flow pattern out of the additional opening;
- and
- a piston slidably disposed in:
- the bore, the first spacer, the second spacer, the third spacer, and the fourth spacer for movement between a blocking position and a throughput position;
- and
- the piston defines a cavity a first opening and a second opening;
- and
- in the throughput position, the first opening is in communication with the intake and the cavity, and the second opening is in communication with the exhaust, the cavity, and the first opening, and the bleed opening is closed and the additional opening is closed;
- and
- in the blocking position, the first opening is in communication with the third spacer and the bleed opening, and the second opening is closed, and the intake is in communication with the additional opening via a constriction of the piston.
12 more elements
Dependencies are inferred from the claim text.