The scientific name of the stainless steel plate dust test box is "sand dust test box", which simulates the destructiveness of the natural wind and sand climate to the product, and is suitable for testing the sealing performance of the product's shell. It is mainly used for the IP5X and IP6X specified in the shell protection standard. grade test. The equipment has a dust-laden vertical circulation airflow, and the dust used in the test can be recycled. The entire air duct is made of imported high-grade stainless steel plates. The bottom of the air duct is connected to the conical hopper interface. Connect the diffusion port on the top of the working room to the working room body to form an "O" type closed vertical dust blowing circulation system, so that the air flow can flow smoothly and the dust can be dispersed evenly to the greatest extent. A single high-power and low-noise centrifugal fan is used, and the wind speed is adjusted by a frequency converter according to the test requirements.
1. Introduction to structural design
a: Dust blowing: use large-diameter stainless steel centrifugal wind wheel plus dust stirring and drying mechanism to effectively inhale dust;
b: Vibration: Micro eccentric wheel motor is used to shake dust more effectively;
c: Dust cleaning: there is a dust cleaning outlet at the bottom of the box funnel, which is convenient for dust cleaning and replacement;
d: Observation window: a bright and clear large observation window equipped with lighting, a wider field of vision to facilitate the observation of dust concentration and dust volume in the box.
2. Introduction to control design
a. Controller: Adopt a new generation of Xinjie PLC all-in-one machine (touch key man-machine interface + PLC). This PL.C is a new generation of highly integrated controller of Xinjie Company. reliable. The backlight liquid crystal display mode can display various information at the same time. The man-machine dialogue input mode is adopted, and all operations only need to be operated in the order indicated on the display screen;
c. Dust drying: The equipment is equipped with a dust drying heating device, and there is a heating button on the control screen. When the dust is found to be a little wet during the test, you can turn on the heating button in the control screen to start the dust heating device to dry the dust. The button can be turned off after the dust is dry. The drying process will not affect the test process, ensuring the effective dust concentration in the test chamber and ensuring the correctness of the test data;
d. Safety protection: It is equipped with power element anti-overload protection, equipment phase loss and phase sequence protection, and the controller will have an alarm screen prompt when the protection operates;