Pneumatic conveying is a simple and effective method of conveying powders and granules in industry. The conveying system usually consists of the following parts: (1) compressed air source, which in most cases uses compressed air through a compressor; (2) Feeding equipment; (3) Transportation pipeline; (4) The receiving silo is used to store the materials transported by the system. Normally, a system is a closed loop, and the pressure inside the system can be high, low, or negative. For materials with special properties, different conveying forces are used, for example, for materials with strong moisture absorption, dry gas is used for conveying; For materials with potential explosion risks, use inert gas transportation. Pneumatic conveying has played an irreplaceable role in industries such as pharmaceuticals, food, chemicals, metallurgy, and new energy materials.

Lock valve, also known as air damper, discharge valve, ash discharge valve, etc. Air lock is an important equipment in pneumatic conveying and ventilation dust removal networks. Its main function is to continuously and timely discharge materials from the discharge or dust collector, while preventing the pressure inside the device from being exposed to normal pressure environment.

An air lock is an improved impeller open air shut-off device, consisting of an impeller, housing, end cover, bearing, organic glass tube (with or without), and material stretching mechanism. The upper end is connected to the discharge port of the discharge machine with a flange. When the impeller rotates continuously, it receives the material discharged from the discharge machine and moves it out from the bottom. The impeller adopts an open design to prevent blockage, reduce machine weight, and beautify the appearance.