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US 8,356,625 B2Granted
Device for the controlled guidance of a polymer melt
AssigneeGneuss Kunststofftechnik GmbH
InventorDetlef Gneuss
Life of this patent
Estimating the term…
Abstract
A valve has a housing formed with a central chamber centered on and extending along a main axis, an inlet passage and an outlet passage having mouths in the chamber spaced angularly from and confronting each other, and a secondary passage offset from the inlet and outlet passages and centered on an axis offset from a center of one of the mouths by more than 90°. A valve pin fitted in the chamber is formed with a secantally throughgoing flow passage centered on a flow-passage axis generally parallel to but offset from a diameter of the pin. A filter is provided in the flow passage, the secondary passage being sufficiently large that, when the pin is pivoted to align the flow passage with the secondary passage, the filter can be removed from the flow passage through the secondary passage.
Claims13
A valve comprising:
- a housing formed with
- a central chamber centered on and extending along a main axis,
- an inlet passage and an outlet passage having mouths in the chamber spaced angularly from and confronting each other, and
- a secondary passage offset from the inlet and outlet passages and centered on an axis offset from a center of one of the mouths by more than 90°;
- a valve pin fitted in the chamber formed with a secantally throughgoing flow passage centered on a flow-passage axis generally parallel to but offset from a diameter of the pin, the valve pin being angularly shiftable between
- a use position with the flow passage aligned between the mouths of the inlet and outlet passages for flow of liquid between the inlet and outlet passages through the flow position and
- another position with the flow passage aligned with the secondary passage and not aligned with the inlet and outlet passages and the pin blocking flow into and out of the inlet and outlet passages through the respective mouths;
- and
- a filter in the flow passage, the secondary passage being sufficiently large that in the other position the filter can be removed from the flow passage through the secondary passage, the housing being formed on the opposite side from the secondary passage with a bore provided as an opening in the housing for a tool by means of which the filter is removable.
6 more elements
A valve comprising:
- a housing formed with
- a central chamber centered on and extending along a main axis,
- an inlet passage and an outlet passage having mouths in the chamber spaced angularly from and confronting each other, and
- a secondary passage offset from the inlet and outlet passages and centered on an axis offset from a center of one of the mouths by more than 90°;
- a rotatable valve pin fitted in the chamber and formed with a secantally throughgoing flow passage centered on a flow-passage axis generally parallel to but offset from a diameter of the pin;
- a rotary arm extending from the pin;
- a connector fitting on the housing;
- a drive pivotally mounted on the connector fitting;
- an actuating link pivotally connected between the drive and the rotary arm, the rotatable pin, the rotary arm, or the actuating link being thermally decoupled, the valve pin being angularly shiftable by the drive between
- a use position with the flow passage aligned between the mouths of the inlet and outlet passages for flow of liquid between the inlet and outlet passages through the flow position and
- another position with the flow passage aligned with the secondary passage and not aligned with the inlet and outlet passages and the pin blocking flow into and out of the inlet and outlet passages through the respective mouths;
- and
- a filter in the flow passage, the secondary passage being sufficiently large that, in the other position the filter can be removed from the flow passage through the secondary passage.
10 more elements
A valve comprising:
- a housing formed with
- a central chamber centered on and extending along a main axis,
- an inlet passage and an outlet passage having mouths in the chamber spaced angularly from and confronting each other, and
- a secondary passage offset from the inlet and outlet passages and centered on an axis offset from a center of one of the mouths by more than 90°;
- a valve pin fitted in the chamber formed with a secantally throughgoing flow passage centered on a flow-passage axis generally parallel to but offset from a diameter of the pin, the valve pin being angularly shiftable between
- a use position with the flow passage aligned between the mouths of the inlet and outlet passages for flow of liquid between the inlet and outlet passages through the flow position and
- another position with the flow passage aligned with the secondary passage and not aligned with the inlet and outlet passages and the pin blocking flow into and out of the inlet and outlet passages through the respective mouths;
- and
- a filter in the flow passage, the secondary passage being sufficiently large that, in the other position, the filter can be removed from the flow passage through the secondary passage, the flow passage having a large-diameter upstream portion fitting with the mouth of the inlet passage in the use position and a small-diameter downstream portion fitting with the mouth of the outlet passage in the use position, the filter being of substantially the same diameter as the upstream portion and fitting snugly therein, the secondary passage being of a diameter at least as great as the upstream portion, the housing further being formed with an access bore opening into the chamber in secantal alignment with the secondary passage and blocked by the pin in the use position, the flow passage extending between the secondary passage and the access bore in the other position such that a tool inserted through the access bore can knock the filter out of the flow passage into the secondary passage.
6 more elements
Dependencies are inferred from the claim text.