| 主权项 |
1. A pressure-sealed closing system for a water filtration housing, comprising:
a head portion having an inner surface which defines a head opening, the head portion configured to be joined to a first end of a hollow body of the water filtration housing such that the head opening communicates with an interior of the hollow body; a lid member having a press section, the lid member configured to be removably received by the head portion to cover the head opening with the press section facing an outward direction relative to the interior of the body; and a lock member configured to releasably engage the head portion such that an abutment section of the lock member projects from the head portion into the head opening, the lock member having an inner portion forming the abutment section and an outer portion configured to be received in an indent defined in the head portion inner surface so as to engage the head portion; wherein a pressure generated within the housing during water filtration presses the lid member in the outward direction and causes the press section to press against the abutment section, thereby pressure sealing the housing at the head opening, wherein the head portion is formed of a thermoplastic outer barrel portion and a reinforced polymer inner barrel portion, wherein the outer barrel portion at least partially covers an outer side of the inner barrel portion, wherein the inner barrel portion is formed of a more rigid material than the outer barrel portion, wherein the outer barrel portion includes a bulbous proximal section having a lower end configured to be attached to an upper end of the hollow body, and a distal section spaced from the bulbous proximal section along a taper such that the distal section defines an outer diameter less than that of the proximal section, and wherein the head portion and the hollow body are overwrapped with reinforcing filaments, and the taper provides a mechanical gripping surface for the filaments. |
