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公开(公告)号：US4744516A
公开(公告)日：1988-05-17
申请号：US768212
申请日：1985-08-22
CPC分类号： B05B9/0861
摘要： There is disclosed herein a liquid spray gun which includes an improved heat dissipation system and an improved leakage flow recirculating system.The improved heat dissipation system results from an improved and stronger air flow through the gun housing and around the electromagnetic coils. The improved air flow is created by a venturi or aspiration effect at the spray tip created by the action of the piston pump in spraying liquid at high velocity reducing the air pressure adjacent the tip. The internal portion of the housing communicates with the low pressure area so air in the housing is drawn from the housing to the low pressure area. Vents are provided in the housing adjacent the electromagnetic coils for outside air to be drawn into said housing over said coils and to the low pressure area, thus improving air flow and heat dissipation.
摘要翻译： 这里公开了一种液体喷枪，其包括改进的散热系统和改进的泄漏流循环系统。 改进的散热系统是由改善和强化的气流通过枪壳体和电磁线圈。 改善的空气流量是由文丘里管或抽吸效应产生的，该喷嘴由活塞泵在高速喷射液体的作用下产生，从而降低了邻近尖端的空气压力。 壳体的内部部分与低压区域连通，从而将壳体中的空气从壳体拉至低压区域。 通风口设置在靠近电磁线圈的壳体中，用于外部空气被吸入所述壳体中并在所述线圈和低压区域上，从而改善空气流动和散热。
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公开(公告)号：US5050804A
公开(公告)日：1991-09-24
申请号：US560744
申请日：1990-08-03
IPC分类号： B05B7/12
CPC分类号： B05B7/1209 , Y10S239/14
摘要： An improved control shaft seal and air valve for a portable paint gun with the seal having a radial clearance with the shaft except at a shaft sealing surface of limited axial length. The shaft seal has a conical surface radially outward of the shaft sealing surface to provide a sealing surface and also to provide transfer of axial forces at that surface to a radial direction to provide a force to urge the shaft sealing surface against the control shaft. A second conical surface of the seal provides for retention of the seal on an air valve spring when the paint gun is disassembled. An improved air valve for portable paint guns is also disclosed having a rigid axial hub and radial support carrying a relatively flexible rim portion adapted to engage a tapered seating surface in the gun.
摘要翻译： 改进的用于便携式喷漆枪的控制轴密封件和空气阀，其密封件具有与轴的径向间隙，除了在有限的轴向长度的轴密封表面之外。 轴密封件具有在轴密封表面的径向外侧的锥形表面，以提供密封表面，并且还提供在该表面处的径向方向上的轴向力传递，以提供将轴密封表面推靠在控制轴上的力。 密封件的第二个锥形表面用于在拆卸喷漆枪时将密封件保持在空气阀门弹簧上。 还公开了用于便携式喷漆枪的改进的空气阀，其具有刚性的轴向轮毂和径向支撑件，所述刚性轴向轮毂和径向支撑件承载适于接合枪中的锥形座面的相对柔性的轮缘部分
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公开(公告)号：US5183207A
公开(公告)日：1993-02-02
申请号：US792175
申请日：1991-11-14
CPC分类号： B05B7/1209 , Y10S239/14
摘要： An improved shaft sealing ring for a portable paint gun of the type having an axially movable control shaft for controlling a supply of pressurized air to atomize a stream of paint. The sealing ring has a truncated frustro-conical surface tapering from a radially extending retaining surface toward a front end of the sealing ring and a radially extending flange at a back end of the sealing ring with an outer peripheral groove in an outer surface of the ring body between the flange and the retaining surface. The ring is installed by urging the front face through an opening having a diameter smaller than that of the face, the opening defined by a wall extending radially inwardly as a part of the gun housing. The flange is resiliently deflected to form a seal when the ring is installed. A central bore of the seal is sized to receive the shaft with a seal between the shaft and the ring provided by a ridge extending radially into the bore of the ring at the back end thereof. The ridge is urged against the shaft by deflection of the flange, thus improving the seal between the ring and the shaft.
摘要翻译： 一种用于便携式喷枪的改进的轴密封环，其具有可轴向移动的控制轴，用于控制加压空气的供应以雾化油漆流。 密封环具有从径向延伸的保持表面朝向密封环的前端渐缩的截头圆锥形表面，在密封环的后端处具有径向延伸的凸缘，在环的外表面中具有外周凹槽 主体在法兰和保持面之间。 通过将前表面推压通过直径小于面的直径的开口来安装环，该开口由作为枪壳体的一部分径向向内延伸的壁限定。 当安装环时，法兰弹性偏转以形成密封。 密封件的中心孔的尺寸被设计成接收轴，该轴在轴和环之间具有密封，所述密封件由在其后端径向延伸到环的孔中的脊提供。 脊通过凸缘的偏转而被推靠在轴上，从而改善了环与轴之间的密封。
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