Two-way three-way solenoid valve working principle two-way three-way solenoid valve classification

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Today Xiaobian brought a professionally high-quality object: two three-way solenoid valves. I believe that for those who have not learned high physics in the middle school, it is really difficult to understand this. The following small series is for everyone. "Let's introduce the basic knowledge about the two three-way solenoid valves . In this regard, friends with less knowledge will come and learn about it!"


两位三通电磁阀


First, two-way three-way solenoid valve working principle


There are closed chambers in the solenoid valve. There are through holes in different positions. Each hole leads to different oil pipes. The middle of the cavity is a valve. On both sides are two electromagnets. Which side of the magnet coil is energized and the valve body will be attracted. On which side, by controlling the movement of the valve body to block or leak different oil drain holes, and the oil inlet hole is normally open, the hydraulic oil will enter different oil drain pipes, and then the oil pressure will push the oil cylinder. The piston, which in turn drives the piston rod, moves the mechanical device. This controls the mechanical motion by controlling the current of the electromagnet.


Second, two three-way solenoid valve classification


1. Direct-acting solenoid valve: Principle: When energized, the electromagnetic coil generates electromagnetic force to lift the closing member from the valve seat, and the valve opens; when the power is off, the electromagnetic force disappears, the spring presses the closing member against the valve seat, and the valve closes. . Features: It can work normally under vacuum, negative pressure and zero pressure, but the diameter is generally not more than 25mm.


2. Distribution direct-acting solenoid valve: Principle: It is a combination of direct-acting and pilot-type. When there is no pressure difference between the inlet and the outlet, after the energization, the electromagnetic force directly turns the pilot small valve and the main valve closing member in sequence. Lift up and the valve opens. When the inlet and outlet reach the starting pressure difference, after the energization, the electromagnetic force leads the small valve, the pressure of the lower chamber of the main valve rises, and the pressure of the upper chamber drops, so that the main valve is pushed upward by the pressure difference; when the power is off, the pilot valve uses the spring The force or medium pressure pushes the closure and moves down to close the valve. Features: It can also be operated at zero pressure difference or vacuum or high pressure, but the power is large, and it must be installed horizontally.


两位三通电磁阀


3. Pilot-operated solenoid valve: Principle: When energized, the electromagnetic force opens the pilot hole, the pressure in the upper chamber drops rapidly, and a pressure difference between the lower part and the lower part is formed around the closing member. The fluid pressure pushes the closing member upward to move the valve to open; When electric, the spring force closes the pilot hole, and the inlet pressure passes through the bypass hole to form a lower low and high pressure difference around the valve member, and the fluid pressure pushes the closing member downward to close the valve. Features: The upper limit of the fluid pressure range is high, can be installed arbitrarily (customized), but must meet the fluid pressure difference conditions. Cylinder control valve model and category two-position two-way, three-position three-way, multi-position multi-way solenoid valve, multi-port multi-position valve. The two positions are two open positions that are controllable (open, closed), two positions are two channel ports, and multiple positions are multiple channel ports.


Three, two three-way solenoid valve price


The price of a two-position three-way solenoid valve is generally different depending on the materials produced. The cheapest solenoid valve is made of plastic, and the price is generally between 1 yuan / 10 yuan / piece. The price of the solenoid valve for cast iron is more than 250 yuan / piece. There are also electromagnetic valves made of aluminum alloy, generally around 20 yuan / piece, the price of stainless steel solenoid valve is between 85 yuan / piece -100 yuan / piece. These are also the most used solenoid valves of several materials.


The two-position three-way solenoid valve mainly uses the principle of physics. I believe that through the above, everyone has a certain understanding of the knowledge of the two-position three-way solenoid valve. The content shared for everyone today is over here. I want to know more. More decorative information, please continue to pay attention to the decoration home network!


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