阅读说明：本技术 一种电动阀及其制造方法 (Electrically operated valve and manufacturing method thereof ) 是由 吕铭 支建成 杨达迈 于 2018-05-17 设计创作，主要内容包括：一种电动阀及其制造方法,该电动阀包括阀体部件(40)、阀座部件(20)、传动部件(30),阀芯部件(10)设置于阀腔(416),阀芯部件(10)包括上筒体(12)、阀芯本体(11)、连接件(14),上筒体(12)包括第一腔体(2),上筒体(12)的上端部包括上止挡部,阀芯本体(11)大致呈圆管状,阀芯本体(11)包括环状薄壁部(112),阀芯本体(11)包括第二腔体(3)；螺母(32)包括径向凸出部(321),径向凸出部(321)能够与上止挡部配合,连接件(14)包括第一轴向通孔(4,4’),连接件(14)的上端部包括下止挡部(143),环状薄壁部(112)能够与所述阀座部件(20)的密封部(222)抵接,所述螺母(32)的下端部能够与所述下止挡部(143)配合,以限制所述螺母(32)向下移动。该电动阀,能够降低阀芯部件(10)受到的压差力,提高阀的动作性。(An electric valve and a manufacturing method thereof, the electric valve comprises a valve body component (40), a valve seat component (20) and a transmission component (30), the valve core component (10) is arranged in a valve cavity (416), the valve core component (10) comprises an upper cylinder (12), a valve core body (11) and a connecting piece (14), the upper cylinder (12) comprises a first cavity (2), the upper end part of the upper cylinder (12) comprises an upper stop part, the valve core body (11) is approximately in a circular tube shape, the valve core body (11) comprises an annular thin-wall part (112), and the valve core body (11) comprises a second cavity (3); the nut (32) includes radial bulge (321), and radial bulge (321) can cooperate with last backstop portion, and connecting piece (14) include first axial through-hole (4, 4'), and the upper end of connecting piece (14) includes lower backstop portion (143), and annular thin wall portion (112) can with sealing portion (222) butt of valve seat part (20), the lower tip of nut (32) can with backstop portion (143) cooperation down, in order to restrict nut (32) moves down. The motor-operated valve can reduce the differential pressure force received by the valve body component (10) and improve the operability of the valve.)