| CPC E03C 1/2302 (2013.01) [E03C 1/182 (2013.01); E03C 1/26 (2013.01); F16K 11/0873 (2013.01); F16K 27/067 (2013.01); E03C 2001/2315 (2013.01)] | 8 Claims |
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1. A drain valve assembly comprising:
a body including a chamber formed in the body and having at least one rotatable stop portion, a first receiving orifice defined on a top of the body and communicating with the chamber, wherein a diameter of the first receiving orifice is equal to or greater than a diameter of the chamber, a discharge orifice formed on a side of the body, a coupling orifice defined on the other side of the body and communicating with the chamber, and a second receiving orifice formed on a bottom of the body and communicating with the chamber;
the first receiving orifice having a first shoulder formed on an outer wall of the first receiving orifice, and a second shoulder and a first threaded section which are formed on an inner wall of the first receiving orifice;
the discharge orifice has a lower support portion extending to the chamber from a lower end thereof so that a profile of the discharge orifice is downward changed from a circle shape to a non-circle shape to connect with the chamber by using an upper end of the discharge orifice, thus supplying water;
the second receiving orifice including an upper support portion formed on a top thereof and located in the chamber and on the lower support portion;
a shaftless ball valve received in the chamber and including a fixing orifice, an opening corresponding to the fixing orifice, a first draining orifice, a second draining orifice, a third draining orifice and a stopping face which are formed in turn between the fixing orifice and the opening, wherein the opening, the first draining orifice, the second draining orifice, and the third draining orifice are communicated with one another; the shaftless ball valve further including a defining orifice corresponding to the rotatable stop portion, a limiting post configured to match with the defining orifice, wherein the limiting post has a locating section formed on an end thereof and a defending section formed on the other end of the limiting post, wherein the location locating section is connected with the defining orifice, and the defending section extrudes out of the shaftless ball valve;
a first reinforcement ring being annular and mounted on the upper support portion and the lower support portion, wherein the first reinforcement ring includes an arcuate face defined on a top thereof and located below the shaftless ball valve;
a second reinforcement ring being annular and including an arcuate face defined on a bottom of the second reinforcement ring, and the second reinforcement ring being located at an upper portion of the chamber and above the shaftless ball valve;
a positioning ring including a through orifice defined on a circular center of the positioning ring, a second threaded section formed on an outer wall of the positioning ring and configured to screw with the first threaded section, and an abutting portion fixed on a bottom of a limiter, and wherein the positioning ring includes at least one first engagement foot and at least one shrink portion;
a controller including a connection portion formed on an end of the controller, an operation portion formed on the other end of the controller, wherein the connection portion is connected with the fixing orifice of the shaftless ball valve so that the controller controls the shaftless ball valve to rotate;
the limiter configured to connect the controller with the coupling orifice;
a filtration holder disposed on the first receiving orifice, wherein the filtration holder includes at least one second engagement foot;
wherein in assembly, the first reinforcement ring is mounted on the upper support portion and the lower support portion, and the shaftless ball valve is received in the chamber and is engaged with the first reinforcement ring, the controller is coupled with the fixing orifice of the shaftless ball valve by using the connection portion and is received in the coupling orifice; the second reinforcement ring is located above the shaftless ball valve, and the second threaded section of the positioning ring is screwed with the first threaded section, wherein the positioning ring forces the second reinforcement ring to abut against the shaftless ball valve so as to fix the shaftless ball valve; in the meantime, the defending section is located on the rotatable stop portion, when the operation portion of the controller is operated, the shaftless ball valve is located between a first position and a second position to rotate, wherein the filtration holder is mounted on the first receiving orifice, the at least one second engagement foot is aligned with the at least one shrink portion to rotate the filtration holder, such that the at least one second engagement foot is engaged with the at least one first engagement foot.
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