With the rapid development of the food processing industry, the supporting products have been more and more widely used, among which the main equipment of rock sugar processing swinging crystallization kettle as an example, it is composed of two parts: the main body of the kettle and the transmission, which contains the sugar liquid nozzle and the vacuum nozzle, so the vacuum solenoid valve used for the switch function is needed on this equipment, which is used to pass the sugar liquid and the sugar-containing steam respectively. Due to the particularity of the medium, there is a certain viscosity, which requires the production process of the vacuum solenoid valve to reach a certain level, in order to ensure the smooth passage of the medium, the structure must be selected direct-acting piston structure, and the negative pressure can reach 1bar, so as to ensure its vacuum, and the medium is saturated steam, in the production process of the solenoid valve, it is necessary to pay attention to the selection of sealing materials and the contact part with the medium can be resistant to high temperature and corrosion (because sugar is slightly corrosive), and the solenoid valve should be opened and closed every 5 minutesTo complete an action, the coil should also be specially treated to ensure that it is within the normal temperature rise range and avoid burning out the coil, so as to improve the life of the whole vacuum solenoid valve.
To sum up, only when all technical aspects are taken into account can the normal operation of the vacuum solenoid valve in the whole system be guaranteed. This requires every technical engineer to figure out the working conditions when the customer buys the product, patiently listen to the customer's story, and the working condition of the whole system, so as to make the best selection plan when purchasing the product.
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