Self-priming centrifugal pump works is: before starting the pump pump filled with water (or the pump itself has water). After the start of high-speed rotation of the impeller so that the impeller channel flow of water to the volute, then the entrance to form a vacuum, the inlet valve against the open, the suction pipe into the air within the pump and reach the outer edge of the impeller channel. On the other hand, the water drained by the impeller into the gas-water separation chamber flows back to the outer edge of the impeller through the left and right return holes. The water flowing back from the left backwater hole is directed to the impeller channel under pressure difference and gravity and is crushed by the impeller. After mixing with the air from the suction pipe, it is thrown to the volute and flows in the direction of rotation. Centrifugal force is actually high-speed rotation of the impeller, water and air at high speed rotation, resulting centrifugal force. The induction door lock is a kind of door lock that can be sensed by ultraviolet or infrared rays. This kind of door lock can achieve the effect of opening and closing the door through these hurriedly. The anti-theft effect of the induction door lock is relatively strong, because this kind of door lock is similar to the fingerprint lock, and the induction door lock will remember a certain kind of ultraviolet or infrared to realize the opening and closing of the door. Induction Lock,Intelligent Induction Door Lock,Intelligent Induction Door Lock For Hotel,Smart Induction Lock Dongguan Kaisijin Intelligent Technology Co., Ltd , https://www.dgoemsmartlock.com
The door lock circuit board is made of three-proof treatment according to military standards, which is anti-corrosion and durable. The lock core of the door lock adopts a five-bolt structure, which is anti-insertion, and is safer.
It has a completely independent mechanical emergency unlocking mechanism. The emergency unlocking mechanism and the electronic unlocking mechanism adopt two completely independent transmission devices, which greatly improves the reliability of the door lock.
The open interface facilitates the connection with the hotel management system software and provides hardware card reading equipment to realize the all-in-one card.