Pressure valve assembly
AssigneeApalta Patents OÜ
InventorSharon Samjitsingh
Life of this patent
Estimating the term…
Abstract
A valve assembly having a conical valve needle axially displaceable in a bore of a valve body wherein a portion of the larger diameter of the valve needle seats downstream at an annular ring when the valve is closed. There is an open area between one end of the valve body to the annular ring even at closure and nozzles for the input of a liquid. The inner wall of the valve body comprises at least one opening for the entry of a liquid under pressure following output of a slurry or liquid from a tube or pipe. The valve assembly is particularly useful in maintaining a semi-continuous or continuous pressurized flow of biomass from an extruder.
Claims19
A valve assembly comprising:
- a valve body having an input end, a discharge end, and a chamber formed therein in connection with the input end and the discharge end, wherein the input end is attachable to a tube with a fluid or slurry input that flows through the valve assembly, wherein the valve body has a first circular collar at the input end, a second circular section at the discharge end, and an intercalary conical section therebetween, and wherein the first circular collar is smaller in inner diameter than the second circular section;
- a conical valve needle that has a cone with a wide end opposing to its conical tip and is axially displaceable in the chamber within the valve body, wherein the conical valve needle abuts the valve body at the discharge end of the valve body when the conical valve needle is closed on the valve body;
- and
- a housing attached to the discharge end of the valve body and enclosing the conical valve needle when the conical valve needle is disengaged with the valve body;
- wherein the conical valve needle has a diameter at the wide end that is at least 4% larger than an inner diameter of the valve body at its discharge end.
A valve assembly comprising:
- a valve body comprising (1) a large circular section, a small circular collar, and an intercalary conical section therebetween, and (2) one or more nozzles for liquid input, the valve body having a chamber formed therein that connects an input end and a discharge end of the valve body, wherein the small circular collar is at the input end and the large circular section is at the discharge end, and wherein the small circular collar is smaller in inner diameter than the large circular section;
- a conical valve needle axially displaceable within the chamber of the valve body, wherein the conical valve needle abuts the valve body at the discharge end of the valve body when the conical valve needle is closed on the valve body;
- and
- a housing attached to the discharge end of the valve body and enclosing the valve needle when the valve needle is disengaged with the valve body.
Dependencies are inferred from the claim text.