Fluid discharge head
AssigneeMeadWestvaco Calmar, Inc.
InventorGisbert Welp
Life of this patent
Estimating the term…
Abstract
Fluid discharge head having a discharge nozzle (5) which has a discharge opening (6) in which an inner sleeve (7) is arranged, which has a medium duct (8) and holds a spring-loaded valve body (10) automatically closing the discharge opening (6), the valve body (10) being formed as a cylindrical piston, which can be displaced axially in a cylinder chamber (12) formed by the inner sleeve (7), an upper (14) and a lower valve seat (15) being provided for the piston ends (16, 17), and the valve body (10) having an intermediate valve plate (18), which forms a chamber bottom of a pressure chamber (19) connected to the medium duct (8), and, in order to open the upper valve seat (14), a medium discharge pressure which is higher than a spring force holding the valve body (10) closed can be set in the pressure chamber.
Claims20
Fluid discharge head having a discharge nozzle (5) which has a discharge opening (6) in which holds an inner sleeve (7) is arranged, which has a medium duct (8) and holds a spring-loaded valve body (10) automatically closing the discharge opening (6), characterized in that the valve body (10) is formed as a cylindrical piston, which can be displaced axially in a cylinder chamber (12) formed by the inner sleeve (7), an upper (14) and a lower valve seat (15) being provided for the piston ends (16, 17), and the valve body (10) having an intermediate valve plate (18), which forms a chamber bottom of a pressure chamber (19) connected to the medium duct (8), and, in order to open the upper valve seat (14), a medium discharge pressure which is higher than a spring force holding the valve body (10) closed can be set in the pressure chamber.
A fluid discharge head, comprising:
- a discharge nozzle, comprising:
- a discharge opening in the discharge nozzle;
- and
- an upper valve seat adjacent the discharge opening;
- an inner sleeve arranged on an interior of the discharge nozzle, comprising:
- a medium duct through the inner sleeve;
- a cylindrical chamber in the inner sleeve in communication with the medium duct;
- and
- a lower valve seat;
- a valve body within the cylindrical chamber, comprising:
- a cylindrical piston;
- a passage duct through the cylindrical piston;
- an intermediate valve plate;
- a first piston end;
- and
- a second piston end;
- a spring applying a load to the valve body;
- and
- a pressure chamber in communication with the medium duct and defined by the intermediate valve plate, inner sleeve and discharge nozzle.
Dependencies are inferred from the claim text.