| 摘要 |
The inventive concept relates to a completely integral ball valve manufactured by an injection fusing molding process. The device comprises a valve core, a valve housing, a valve control handle, and inlet/outlet flow pipes, all forming an integral structure. The valve core is the primary component of the ball valve, and is comprised of a spherical enclosure, a valve ball, left and right leakage seal rings, a spherical enclosure cap, a valve stem affixed to the valve ball, and a valve handle. The valve core, valve housing, and left and right intake/outflow pipes are integrally assembled by injection molding. The injection fusion molding process gives the ball valve higher flexion strength and greater durability as compared to the typical sweat soldering process. Precisely dimensioned mold sections ensure the accuracy of dimensions, fittings, and tolerances of the ball valve components during the injection fusing molding. |
| 主权项 |
1. An integral ball valve, comprised of plastic or similar material, utilized in controlling the transmission of fluids through various sizes of pipelines, comprising
(a) a spherical enclosure having a generally cylindrical structure and further having a top surface with a central circular aperture, a circular inner face, a bottom surface, an outer vertical face, a left leakage seal ring, and a barrel opening with a ring-shaped, vertical outer face; (b) left and a right leakage seal rings, each seal ring having a first diameter and a raised lip extending continuously about the circumference of one side of each leakage seal ring; (c) a rod-shaped valve stem having a plurality of circumferentially-circumscribed grooves into which are installed gasket O-rings, a top-most notch, and a bottommost shaft having a polygonal cross-section; (d) a valve handle having an interior tubular-shaped cavity corresponding to the outer dimensions of said valve stem; (e) a valve ball consisting of i) a sphere of outer diameter corresponding to the barrel opening of said spherical enclosure, ii) a through-hole of diameter corresponding to the first diameter of said leakage seal rings, said through-hole forming a left ball outlet and a right ball outlet, and iii) a topmost polygonal socket with a cross-section corresponding to the cross-sectional dimensions of the shaft of said valve stem; (f) a spherical enclosure cap assembly consisting of a cap opening corresponding to the right ball outlet of said valve ball, a circumferential flange, a sealing gasket placed about the outer circumference of said flange, a right leakage seal ring, a cap first face, and a cap second face, said cap first face being placed in abutment to the outer vertical face of the spherical enclosure and thereby forming a valve core having a left main port and a right main port; (g) a left flow pipe and a right flow pipe; and (h) a valve body housing integral to, and encompassing the outer surfaces of said valve core, further encompassing said left main port and said right main port, simultaneously encompassing a segment of an end of the left flow pipe and an end of the right flow pipe, respectively; wherein said valve ball occupies a fitted space within the barrel opening of said spherical enclosure, with placement of left and right leakage seal rings vertically on both sides of said valve ball and the through-hole lined up axially with the outer face of said spherical enclosure, the enclosure cap assembly is fitted onto the outer face of said spherical enclosure, the left and right flow pipes integral to, and projecting coaxially from the left and right sides of the valve body housing, the valve stem being securely attached to the valve ball polygonal socket such that the valve stem polygonal shaft is fitted into the polygonal socket of said valve ball, the valve body housing encompasses the valve core, the valve handle is fastened onto the uppermost part of the valve stem, and further, the left flow pipe and the right flow pipe extend coaxially and symmetrically from the left main port and the right main port of the valve body housing respectively. |
