| 摘要 |
<p>A compression diaphragm pump having automatic air expelling and abnormal pressure preventing functions for spray use is provided to control the water pressure continuously by automatically expelling the air included in the compressed water, thereby improving the service life of inner components. A compression diaphragm pump comprises an air exhaust assembly(100) and a plunger body(200). The air exhaust assembly includes a first and a second air exhaust cylinder(101,102), an air passage(103) penetrated between a water outlet port of an upper hood and the first air exhaust cylinder, and an air exhaust orifice(104) formed in the second air exhaust cylinder. The plunger body includes a top plunger opening(201), a bottom plunger baffle(202), a spring arranged inside the plunger opening, an air hole(204) formed on the wall of the plunger baffle, and an O-ring gasket(205) installed on the peripheral part of the plunger baffle.</p> |
