Normally open type single electrical solenoid valve movement theory: two tee to coil electricity, gas path fault, coil once electricity, gas path will get through, this is the 'point'. Guiding type solenoid valve: principle: electricity, electromagnetic energy to the guide hole open and chamber pressure on a sudden loss, low in close formation around a high differential pressure, fluid pressure push close a progressive movement, the valve open; Power off, the spring force to close the guide hole, inlet pressure rapidly-changing chamber through the bypass hole under the closed valves on the enclosed form and low high differential pressure, fluid pressure push close move down, close the valve. Normally closed type two behavior principle: the 3-way magnet valve (to coil electricity, gas circuit switched on, the coil once electricity, road will be broken, this is equivalent to the 'point'. Ordinary coil voltage grade right used DC24V, AC220V, etc. Direct acting solenoid valve: principle: electricity, electromagnetic coil initiation electromagnetic energy security barrier closed from the seat, the valve open; Power, the electromagnetic energy away, press on the seat, spring guard barrier closed valve shut off. When entrance and differential pressure of the export to begin to work, after electrify, electromagnetic energy pilot valve, main valve inferior vena pressure rise, the cavity pressure drops, so using the differential pushed the main valve aspirant away Marine valve; Power outages, pilot valve using the spring force or medium pressure push off, move down, to close the valve. 。 Two five-way solenoid valve with double effect commonly used pneumatic actuators of a set of use, two is two position control: open - , there are five tunnel ventilation, 45 is there one with air petition, two external air chamber and double cylinder out of the air inlet of the petition, two out of the air inlet and air chamber inside adjacency, specific office principle can use reference double pneumatic actuators office principle in gas path ( Or hydraulic) Two, the 3-way magnet valve (with 1 into the air cavity ( Answer the intake air) , a vent hole ( Give purpose facilities air source) And 1 exhaust eyes ( Install a silencer, ordinary if not noise also can not put it @ email  保护) ) 。 To the coil current, while the action gas path connected ( The action to vent hole have spirit) , even to the coil's movement and gas circuit is connected when the power is cut off, will always be to give positive action coil electricity cut-off. Two of the 3-way magnet valve (divided into normally closed type and open type two kinds, puffing normally closed type refers to the coil not electricity, road is broken, often refers to the coil type of oil-gas no electricity road is connected. Q: two principles of the 3-way magnet valve (a: abstract: the principle: electricity, electromagnetic energy to the guide hole open and chamber pressure on a sudden loss, low in close formation around a high differential pressure, fluid pressure push close a progressive movement, the valve open; Power off, the spring force to close the guide hole, inlet pressure rapidly-changing chamber through the bypass hole under the closed valves on the enclosed form and low high differential pressure, fluid pressure push close move down, close the valve. For small semi-automatic stem facilities, trachea, ordinary choose 8 ~ 12 mm industrial glue trachea. Unique place: when the zero differential pressure or vacuum and high pressure also can * action, but power is larger, requirements must be water there is no danger. Two the 3-way magnet valve (general and application of single pneumatic actuators are composed of a set of utility, two is two position control: open - , three links, there are three channels ventilation ordinary things under the condition of one channel and air petition, two additional channel 1 and the air inlet of the actuator petition, a petition with the actuator vent, specific office principle can refer to a single utility principle diagram of the pneumatic actuators office. Two on the electrical, the 3-way magnet valve (common for single electric control ( The one coil) , the two five-way solenoid valve for ordinary double electric control ( The double coil) 。 Two five double electric solenoid valve movement theory: to positive action coil electricity, gas path is action on ( Positive action to vent holes have spirit) , even if is moves the coil after the power is movement and gas circuit is connected, will always be to give the action coil electricity cut-off. Spread the direct acting solenoid valve: principle: it is a direct acting and pilot operated the principle of phase conjugation, when the inlet and outlet no pressure difference, after electrify, electromagnetic energy the pilot valve and main Industrial Valves closed directly to a progressive aspirant, open the valve. Two five-way solenoid valve with one into the air cavity ( Answer the intake air) , a positive action to vent holes and one reverse action to vent hole ( Points, not to mention a is a reverse action which provides facilities for purposes of air) And 1 is the action and a reverse action and exhaust exhaust eye ( Install the muffler) 。 Unique place: in a vacuum, negative pressure, can normal office when the zero pressure, but not more than 25 mm size ordinary. This is equivalent to 'lock'.
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