30-03-2017 дата публикации
Номер: US20170086561A1
Принадлежит:
An adjustable spray head includes a coaxial spray head and an adjusting device. The coaxial spray head includes an outer tube, an inner tube, a needle valve, a gas inlet, and a material inlet. The inner tube is coaxially positioned in the outer tube. One end of the outer tube has an outer exit. The needle valve is coaxially positioned in the inner tube. One end of the inner tube has an inner exit. The top end of the needle valve can be inserted into the inner exit. The adjusting device includes a clamping member, a transmission gear, and a driving motor. The clamping member includes a clamping portion and a teeth bar. The clamping portion clamps the needle valve. The teeth bar is engaged with the transmission gear. The driving motor drives the transmission gear to rotate to drive the clamping member to move linearly. 1. An adjustable spray head , comprising:a coaxial spray head, comprising an outer tube, an inner tube, a needle valve, a gas inlet, and a material inlet, wherein the outer tube is greater than the inner tube, the inner tube is coaxially positioned in the outer tube, a gas channel is formed between the inner tube and the outer tube, one end of the outer tube has an outer exit, the gas channel is communicated between the outer exit and the gas inlet, the inner tube is greater than the needle valve, the needle valve is coaxially positioned in the inner tube, a liquid channel is formed between the inner tube and the needle valve, one end of the inner tube has an inner exit, the inner exit coaxially corresponds to the outer exit, the liquid channel is communicated between the inner exit and the material inlet, the needle valve comprises a top end, the needle valve is movable in the inner tube along the axial direction of the inner tube to allow the top end to be inserted into the inner exit; andan adjusting device, comprising a clamping member, a transmission gear, and a driving motor, wherein the clamping member comprises a clamping portion and a teeth bar ...
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