Piston of a membrane filtration system
AssigneeSalinity Solutions Ltd
InventorsTimothy Naughton, Liam Burlace, Philip Davies
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Abstract
A piston assembly for use in a fluid circulation system comprises a piston housing separated by a piston in a first chamber and a second chamber. The piston fluidly separates the first chamber from the second chamber, and is moveable to change the volumes of the first and second chambers. At least one chamber comprises two fluid ports, spaced apart from each other. The piston comprises a passage, that connects the two fluid ports when the piston is moved to one side of the first chamber, while sealing the first chamber from the second chamber. Further disclosed is a piston for use with a piston assembly. The piston permits pressurisation of each chamber while providing a bypass passage through the two fluid ports.
Claims20
A piston assembly for use in a fluid circulation system, the piston assembly comprising a piston housing defining a chamber comprising a first chamber end and a second chamber end, the piston assembly comprising a piston body comprising a sealing portion to fluidly separate the first chamber end from the second chamber end, the piston body moveably disposed to allow it to change volumes of the first and second chamber ends, respectively, wherein at least the first chamber end comprises a first fluid port and a second fluid port spaced apart from the first fluid port, wherein the piston body comprises a first piston passage open to a first side of the sealing portion, the first piston passage providing a first connecting passage from the first fluid port to the second fluid port when the piston body is located at the first chamber end, and wherein the sealing portion maintains fluid separation to the second chamber end.
A piston body for use in a piston assembly of a fluid circulation system, the piston comprising a body comprising an elongate extension between two opposite ends, the body comprising a body portion partway between the two opposite ends arranged to fluidly isolate the two opposite ends, wherein the opposite ends each comprise an end face and a mantle portion defined by a perimeter of the body, and wherein the body comprises a piston passage extending from an end face to the mantle portion.
Dependencies are inferred from the claim text.