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Solenoid Valve Supplier
inquiry@ato.com.cnWhat is a Solenoid Valve?
The solenoid valve is an automatic basic element used to control the
fluids. As an actuator, it can be used to control the direction, flow,
speed and other parameters of the medium in the industrial control
system to achieve the purpose of automatic control. The solenoid valve
is an industrial equipment, which realizes its control via the
electromagnetic principle. According to the electromagnetic principle,
the solenoid valve is powered on, and the electromagnetic force
generated by the solenoid valve coil is used to push the valve core and
control the on-off of every gas circuit.
Solenoid valve working principle
There is an airtight cavity within the solenoid valve. Holes are opened in different positions. Every hole is connected with different oil pipes. The piston is in the middle of the cavity, and the two sides of the piston are two electromagnets. The electrified valve body of the solenoid valve coil will be attracted to the corresponding side. By controlling the valve movement, different oil discharge holes can be started or shut down. The oil inlet hole is constantly-open. The hydraulic oil will enter different oil discharge holes, and the piston of the oil cylinder is driven by the oil pressure. After that, the piston will drive the piston pole and the piston pole will drive the mechanical device. By controlling the current of the magnetic iron, the mechanical movement can be controlled.
Solenoid valve structure
The solenoid valve is made up of the solenoid valve coil and magnetic core, which is a valve containing one or several holes. When the coil is connected or disconnected with the power, the operation of the magnetic core will result in cutoff of the fluid when passing the valve body, thus realizing the goal of changing the fluid direction.
The valve body of the solenoid valve is made up of the sliding valve core, sliding valve set, spring pedestal, etc. The electromagnetic components of the solenoid valve include the fixed iron core, movable iron core, coil, etc. The solenoid valve coil is directly installed onto the valve body, and the valve body is then enclosed by the sealing tube to constitute a concise and compact combination.
Solenoid valve types
According to the operation principle, the solenoid valve can be divided into the direct action type, distributed direct action type and pilot-operated type. A striking characteristic of the direct-action solenoid valve is that the solenoid valve can work under the vacuum, negative pressure and zero-pressure condition, but the diameter usually does not exceed 25mm. The distributed direct action solenoid valve is one combining the direct action and the pilot operation. It can move reliably even under the zero pressure differential or vacuum or high pressure, but the power is relatively large and horizontal installation is necessary. A major characteristic of the pilot-operated solenoid valve is that the fluid pressure has a high upper limit and can be arbitrarily installed (customization required), but it must meet the requirements of the fluid pressure differential.
In light of the valve body gas circuit structure, the solenoid valve can be divided into the 2-position 2-way, 2-position 3-way, 2-position 4-way, 2-position 5-way, three-position four-way, etc. The work status of the solenoid valve is called "position". Take the ATO 2-position 2-way solenoid valve for example. It means that the valve core has two controllable positions, which are corresponding to the switch-on and switch-off status of the gas circuit. The connection between the solenoid valve and the pipeline is known as "port" or "way", including two-way, three-way, four-way and five-way. As to the structural difference between the two-way solenoid valve and the three-way solenoid valve, the latter has the exhaust port, while the former does not have. The four-port solenoid valve and the five-port solenoid valve have the same functions. The former has one exhaust port, while the latter has two. The two-port solenoid valve has no exhaust port, which can just cut off the fluid to stop its circulation. Due to this characteristic, the two-port solenoid valve can be directly applied to the processing system. On the contrary, the multi-port solenoid valve can change the medium circulation direction, and is thus applied to various actuating mechanisms.
According to the number of the solenoid valve coils, the solenoid valve can be divided into the single electric control and the double electric control. The two-position and two-port solenoid valve and the two-position and three-port solenoid valve generally feature the single electric control (single solenoid). The two-position and four-port solenoid valve and the two-position and five-port solenoid valve can adopt either the single electric control (double solenoid) or the double electric control (double solenoid).
According to different working voltages of the coil, the solenoid valve might be DC 12 V, DC 24 V, AC 110 V, and AC 220 V.
Solenoid valve functions
1. Control direction of pneumatic actuating module movement, On/Off switch control, OR/Not/And logic control.
2. The solenoid valve is used to control switch-on and switch-off of the gas circuit or change of the compressed air flowing direction.
3. The solenoid valve is just an accessory of the pneumatic adjusting valve, and it is used to control the air supply and gas circuit of the pneumatic valve. For example, the 3 way 2 position solenoid valve can be used together with the pneumatic control valve to control the flowing path of the air source.
4. The solenoid valve is usually used to the switching valve, which can control the air supply and gas circuit switch-on or switch-off to further control the valve switch.
5. The solenoid valve has a circulating diameter much larger than the locator, which can also be used to the situation requiring immediate switch-on and switch-off.
6. The single solenoid valve might be normally-closed or normally-open when it is switched off. This can ensure gas-cut protection.
Solenoid valve working principle
There is an airtight cavity within the solenoid valve. Holes are opened in different positions. Every hole is connected with different oil pipes. The piston is in the middle of the cavity, and the two sides of the piston are two electromagnets. The electrified valve body of the solenoid valve coil will be attracted to the corresponding side. By controlling the valve movement, different oil discharge holes can be started or shut down. The oil inlet hole is constantly-open. The hydraulic oil will enter different oil discharge holes, and the piston of the oil cylinder is driven by the oil pressure. After that, the piston will drive the piston pole and the piston pole will drive the mechanical device. By controlling the current of the magnetic iron, the mechanical movement can be controlled.
Solenoid valve structure
The solenoid valve is made up of the solenoid valve coil and magnetic core, which is a valve containing one or several holes. When the coil is connected or disconnected with the power, the operation of the magnetic core will result in cutoff of the fluid when passing the valve body, thus realizing the goal of changing the fluid direction.
The valve body of the solenoid valve is made up of the sliding valve core, sliding valve set, spring pedestal, etc. The electromagnetic components of the solenoid valve include the fixed iron core, movable iron core, coil, etc. The solenoid valve coil is directly installed onto the valve body, and the valve body is then enclosed by the sealing tube to constitute a concise and compact combination.
According to the operation principle, the solenoid valve can be divided into the direct action type, distributed direct action type and pilot-operated type. A striking characteristic of the direct-action solenoid valve is that the solenoid valve can work under the vacuum, negative pressure and zero-pressure condition, but the diameter usually does not exceed 25mm. The distributed direct action solenoid valve is one combining the direct action and the pilot operation. It can move reliably even under the zero pressure differential or vacuum or high pressure, but the power is relatively large and horizontal installation is necessary. A major characteristic of the pilot-operated solenoid valve is that the fluid pressure has a high upper limit and can be arbitrarily installed (customization required), but it must meet the requirements of the fluid pressure differential.
In light of the valve body gas circuit structure, the solenoid valve can be divided into the 2-position 2-way, 2-position 3-way, 2-position 4-way, 2-position 5-way, three-position four-way, etc. The work status of the solenoid valve is called "position". Take the ATO 2-position 2-way solenoid valve for example. It means that the valve core has two controllable positions, which are corresponding to the switch-on and switch-off status of the gas circuit. The connection between the solenoid valve and the pipeline is known as "port" or "way", including two-way, three-way, four-way and five-way. As to the structural difference between the two-way solenoid valve and the three-way solenoid valve, the latter has the exhaust port, while the former does not have. The four-port solenoid valve and the five-port solenoid valve have the same functions. The former has one exhaust port, while the latter has two. The two-port solenoid valve has no exhaust port, which can just cut off the fluid to stop its circulation. Due to this characteristic, the two-port solenoid valve can be directly applied to the processing system. On the contrary, the multi-port solenoid valve can change the medium circulation direction, and is thus applied to various actuating mechanisms.
According to the number of the solenoid valve coils, the solenoid valve can be divided into the single electric control and the double electric control. The two-position and two-port solenoid valve and the two-position and three-port solenoid valve generally feature the single electric control (single solenoid). The two-position and four-port solenoid valve and the two-position and five-port solenoid valve can adopt either the single electric control (double solenoid) or the double electric control (double solenoid).
According to different working voltages of the coil, the solenoid valve might be DC 12 V, DC 24 V, AC 110 V, and AC 220 V.
Solenoid valve functions
1. Control direction of pneumatic actuating module movement, On/Off switch control, OR/Not/And logic control.
2. The solenoid valve is used to control switch-on and switch-off of the gas circuit or change of the compressed air flowing direction.
3. The solenoid valve is just an accessory of the pneumatic adjusting valve, and it is used to control the air supply and gas circuit of the pneumatic valve. For example, the 3 way 2 position solenoid valve can be used together with the pneumatic control valve to control the flowing path of the air source.
4. The solenoid valve is usually used to the switching valve, which can control the air supply and gas circuit switch-on or switch-off to further control the valve switch.
5. The solenoid valve has a circulating diameter much larger than the locator, which can also be used to the situation requiring immediate switch-on and switch-off.
6. The single solenoid valve might be normally-closed or normally-open when it is switched off. This can ensure gas-cut protection.
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