The air treatment system consists of a wire mesh water separator, a dryer, a filter, an electric vent valve, a pneumatic back pressure pipe, and a check valve, which are connected in series downstream of the air compression system. A gas water separator is used to eliminate free water droplets in the incoming stream to prevent adverse effects on the desiccant. The dryer is a variable pressure regenerative adsorption type, and the desiccant is XP type activated alumina ball, the ball diameter is 4 mm to 8 mm, the specific surface area is 300 m 2 g, and the pore volume is 0.40 cm 3 g. The dryer consists of two drying towers, one microcomputer controller, and several The valve is composed. One tower is a working tower, and the desiccant is used to adsorb the moisture in the hot and humid air to achieve the specified dryness; one tower is a regeneration tower, which is depressurized with dry compressed air to a level slightly higher than the atmospheric level, and then dried and inactivated after being sucked and absorbed. The agent is regenerated and reactivated. The two towers are automatically switched by the microcomputer controller to maintain the continuity of the drying process. A complete switching cycle is 10 min. The inlet, exhaust and boost valves of the dryer are pneumatic diaphragm valves, and the throttle valve is the orifice plate. . The filter is used to remove the desiccant powder. The pneumatic back pressure tube is a sonic throat that automatically controls the back pressure of the dryer. The check valve prevents backflow and the vent valve is used for idle start of the dryer. The air handling system only needs to close the vent valve after the air compressor has finished loading, and the other operations are completely automatic. The compressed air is input through the front end of the compensator, and part of the heat is transferred to the heat storage material and stored there. Then, the gas is taken from the end of the compensator through the manifold into the eight gas storage tanks for standby; in the wind tunnel test, the compression in the gas storage tank The air passes through the manifold, and the compensator tail end flows backward into the compensator. The heat accumulating material transfers part of the heat absorbed by it to the compressed air to compensate for the decrease in the total temperature of the air caused by the rapid expansion of the air in the gas tank. The compensated compressed air enters the gas pipe through the front end of the compensator and flows into the wind tunnel through the gate valve. Automatic Interior High Frequency Welding Machine
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