| 摘要 |
Disclosed is a four-function anti-water hammer air valve set, comprising a negative pressure intake valve (1), a micro-amount exhaust valve (2) and a high-speed exhaust valve (3) as well as a control isolating valve (4); the high-speed exhaust valve (3) is connected to the top of the negative pressure intake valve (1) via the control valve, the two being arranged separately rather than being common to each other, in order on the one hand to be selected individually to fulfil respectively the requirements for two different flow rates or speeds or calibers in a high-speed exhaust and a high-speed intake, and on the other hand to conduct a composite intake, at a negative pressure, of both flows of intake air to complement each other; the independency of three orifices allows a high-speed intake orifice and a micro-amount exhaust orifice to combine and form a "gas-inject and micro-exhaust valve" or a "high-intake and micro-exhaust valve", so that the valve set has the function of inhibiting the cavity from closing a water hammer. The four-function anti-water hammer air valve set has the function of the three orifices being independent of each other, the function of being able to be artificially turned off and then turned on, that is provided by the provision of a control isolating valve for the high-speed exhaust orifice, the function of combining the latter two functions to form a function with special effect, and the function of greatly reducing the high-speed exhaust orifice. |
