The movable iron core inside the solenoid valve coil is attracted and moved by the coil when the valve is energized, driving the valve core to move and thus changing the conduction state of the valve; The so-called dry or wet type only refers to the working environment of the coil, and there is not much difference in terms of valve action.
However, we know that the inductance of a hollow coil is different from the inductance after adding an iron core to the coil. The former is smaller and the latter is larger. When an alternating current is applied to the coil, the impedance generated by the coil is also different. When the same frequency of alternating current is applied to the same coil, the inductance will change with the position of the iron core, that is, its impedance will change with the position of the iron core. When the impedance is small, the current flowing through the coil will increase. >The reason why the coil of the solenoid valve is often too warm is that when the coil of the solenoid valve is in working state (energized), the iron core is attracted, forming a closed magnetic circuit. When designing with the inductance at its maximum state. Its heating is normal, but when the iron core is energized, it cannot be smoothly attracted, the inductance of the coil decreases, the impedance decreases, and the current increases accordingly, which leads to excessive coil current and affects the use time. Therefore, oil stains hinder the movement of the iron core, and the action is slow when energized, even unable to be fully attracted normally, causing the coil to be in a state of impedance lower than normal when energized. Perhaps it is the coil's factor.
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Company Introduction
Our company has been engaged in the business of paving machines, rollers, milling machine accessories, and remanufactured second-hand machinery since 2000.
Company business scope: Supply of paver accessories, roller accessories, milling machine accessories, paver scraper drive shaft, scraper drive shaft assembly, leveling instrument, leveling instrument bracket, hydraulic pump and accessories. We also supply vulnerable parts for pavers, including balance beams, agitator shafts, pedals, feeding base plates, blades, ironing plates, reducers, chain rails, track plates, support wheels, scraper chains, and feeding chains.
Milling machine: milling machine tool head, tool holder, conveyor belt, drum, drum, polyurethane track plate, walking chain rail, transmission gear and other accessories.
Roller accessories: roller nozzle, sprinkler pump, shock absorber, steel wheel, rubber tire, water tank, etc. And sales and maintenance of hydraulic pumps, hydraulic motors, and reducers.
Contact: Manager Liang
Contact information: 13645201509 (same WeChat account)
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