| 摘要 |
<p>A flow-regulated drip emitter, including a housing provided with an inlet connector connectable into a relatively high-pressure liquid-line and an outlet opening, a flexible diaphragm retained along a peripheral portion thereof in the housing and dividing the interior of the housing into an inlet chamber and an outlet chamber, a flow-regulating valve comprised of a valve head accessible to the high pressure and a valve stem one end of which is attached to the valve head. The emitter further includes at least one flow-attenuating element disposed in the path of the liquid flowing from the inlet chamber into the outlet chamber, a valve seat associated with the valve head and located in a high-pressure region upstream of the inlet chamber, the valve seat and the valve head defining between them a gap through which the liquid passes on its way from the high-pressure line into the inlet chamber. The valve head is adapted to be acted upon by a first force tending to reduce the gap, and by a second force tending to increase the gap, a state of equilibrium between the forces defining the set point of the flow-regulated emitter.</p> |
