Unorganized-dust dust suppressant dust restraining rate testing and evaluating device and method

The invention discloses an unorganized-dust dust suppressant dust restraining rate testing and evaluating device and a method. The unorganized-dust dust suppressant dust restraining rate testing and evaluating device mainly comprises an axial flow fan, an experiment cabin, and a measuring amount adjusting and controlling device; the measuring amount adjusting and controlling device is composed of a temperature and humidity regulator, a smoke dust sampling device, and an electrical low pressure impactor; the axial flow fan is connected with an experiment cabin high speed wind section via flexible connection; the axial flow fan is connected with the temperature and humidity regulator; the experiment cabin is divided into the experiment cabin high speed wind section, an experiment cabin wind direction adjusting section, an experiment cabin low speed section, and an experiment cabin air exhaust section along wind direction tendency; the top of the experiment cabin high speed wind section is provided with testing ports; a wind direction adjusting device is arranged between the experiment cabin wind direction adjusting section and the experiment cabin low speed section; the top of the experiment cabin low speed section is provided with a twin-fluid atomization nozzle and a material falling port, the bottom is provided with a wastewater discharge hole, and the side surface is provided with testing ports; and the smoke dust sampling device and the electrical low pressure impactor are connected with the testing ports. The unorganized-dust dust suppressant dust restraining rate testing and evaluating device is convenient and accurate for testing, is reliable, and is capable of stimulating environmental parameters accurately.