Valve assembly for a dose filling machine having improved seal assemblies
AssigneeWinpak Lane, Inc.
InventorSteven Davis
Life of this patent
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Abstract
A valve assembly for a dose filling machine having a valve body, a rotor and a first end seal assembly. The valve body has a main supply bore, a rotor bore, an upper rotor piston bore, and a side rotor dispensing bore. The rotor is rotatably positioned in the rotor bore. The first end seal assembly comprising a first end rotor seal engaging the valve bore and the rotor. A first end inner plate overlies the first side of the valve body and the first end rotor seal. The first end outer plate includes a bearing positioned within an opening thereof. A transverse slot extends from the opening to an outer edge so that a leak beyond the first end rotor seal proceeds through the transverse slot away from the bearing.
Claims17
A valve assembly for a dose filling machine comprising:
- a valve body having a first side surface and a second side surface, the valve body defining:
- a main supply bore having an inlet bore and an outlet bore;
- a rotor bore extending between the first side surface and the second side surface, the rotor bore in fluid communication with the outlet bore of the main supply bore;
- an upper rotor piston bore in fluid communication with the rotor bore, the upper rotor piston bore having an inlet and an outlet;
- a side rotor dispensing bore in fluid communication with the rotor bore, the side rotor dispensing bore having an inlet and an outlet;
- a rotor positioned within the rotor bore and rotatable therewithin relative to the valve body, the rotor having a first end extending beyond the first side surface of the valve body and a second end opposite the first end;
- and
- a first end seal assembly positionable over the first side surface of the valve body, the first end seal assembly further comprising:
- a first end rotor seal sealingly engaging the valve bore and the rotor proximate the first side surface of the valve body;
- a first end inner plate having an inner surface and an outer surface, the first end inner plate overlying the first side surface of the valve body, the first end inner plate further having an opening through which the first end of the rotor extends;
- a first end outer plate having an inner surface facing the outer surface of the first end inner plate, the first end outer plate having an opening having a first end bearing positioned therein, with the first end of the rotor extending through the opening and the first end bearing, and, the inner surface of the first end outer plate having a transverse slot extending from the opening toward an edge of the first end outer plate closer to the bottom surface of the valve body.
Dependencies are inferred from the claim text.