Component feed nozzle
AssigneeKraussmaffei Technolgies GmbH
InventorsRalf Moser, Josef Renkl
Life of this patent
Estimating the term…
Abstract
A component feed nozzle includes a housing, which has a component inlet and a component outlet, a piston-shaped closing body, which is slidably supported in the housing and which can be moved back and forth axially. The component outlet is closed by the front end of the closing body in a first position and the component outlet is released or opened in a second position. The component feed nozzle has a membrane seal, which is fastened to the rear end of the closing body and to the housing in such a way that the closing body is completely on one face of the membrane seal. The housing and/or the closing body are designed in such a way that the component reaches all surfaces of the closing body and thus the component pressure is applied to the complete effective surface of the membrane.
Claims11
A component feed nozzle, comprising;
- a housing having a first housing element and a second housing element axially spaced from the first housing element and having a component inlet and a component outlet provided in the first housing element and axially spaced from each other;
- a pressure plate arranged in contact with the second housing element;
- a piston-shaped closing body having a guide section slidably supported in the first housing portion of the housing for back and forth sliding movement of the closing body axially between two positions so that a bearing of the guide section of the closing body is a sliding bearing which slidingly guides the guide section during the back and forth sliding movement of the closing body axially between the two positions, said closing body having a rear end located axially further from the component outlet and a front end provided with a closing section extending from the guide section axially forwardly toward the component outlet and closing the component outlet in a first one of the two positions and clearing or opening the component outlet in a second one of the two positions;
- and
- a membrane seal fastened to the rear end of the closing body and to the housing such that the closing body is situated completely on a front face of the membrane seal, said membrane seal having a radially inner portion which is located between the pressure plate and the closing body and is applied at one axial side on the pressure plate and on the other side on an end face of the rear end of the closing body and also on an outer surface of the rear end of the closing body in direct contact with the end face and the outer surface of the rear end of the closing body at an axial location, said membrane seal also having a radially outer portion which is clamped between the first and second housing elements of the housing, said membrane seal (30) further having a radially intermediate portion located between the radially inner portion and radially outer portion and being free from contacts with any parts of the component feed nozzle;
- wherein at least one member selected from the group consisting of the housing and the closing body is configured to enable a component to reach the membrane seal and thereby apply a component pressure across an entire effective surface area of the membrane seal.
Dependencies are inferred from the claim text.