Entrance filter
The invention relates to an entrance filter, which is used for filtering gas connected into a screw compressor. An upper end socket is fixed at the upper end part of a barrel, a lower end socket is fixed at the lower end part of the barrel; a vent nozzle is formed in the upper end socket; a sewage draining port is formed in the lower end socket; an air inlet is formed in the upper section of the wall body of the barrel; an air outlet is formed in the lower section of the wall body of the barrel; a shelf ring is fixed on the inner wall of the barrel; the plane of the shelf ring and the barrel are in an acute angle intersection; the shelf ring is provided with a filter drum and the height of the filter drum at the side of the air inlet is less than that of the filter drum at the side of the air outlet; and a lifting lug is fixed on the upper end socket and a supporting foot is fixed on the lower end socket. The entrance filter disclosed by the invention can effectively filter gas connected into the screw compressor, the work efficiency of the screw compressor is improved and the service life of the screw compressor is prolonged. 1. An inlet filter, comprises a cylinder body (1), upper seal head (2) and the lower head (3), the cylinder (1) is fixed with the upper end portion of the head (2), the cylinder (1) is fixed with the lower end of the bed (3), the upper head (2) is equipped with vents (4), in the lower head (3) is provided with a drain (5), which is characterized in that: the cylinder (1) is provided with an air inlet on the wall body of the upper section of the (6), the cylinder (1) on the lower section wall is provided with a gas outlet (7), the cylinder (1) is fixed with the inner wall of the shelf (8), shelf (8) with the plane of the cylinder body (1) intersect in an acute angle, in the shelf (8) is provided with a cartridge (9), and is located in the air inlet (6) on one side of the cartridge (9) is smaller than the height of the air outlet (7) on one side of the cartridge (9) height, the upper head (2) is fixed with a lifting lug (10), in the lower head (3) is fixedly provided with a support foot (11). 2. The inlet filter according to Claim 1, which is characterized in that: the discharge port (4) is arranged in the upper cover (2) the middle position at the top end of the. 3. The inlet filter according to Claim 1, which is characterized in that: a drain port (5) is set up in the lower head (3) at the bottom end of the middle position. 4. The inlet filter according to Claim 1, which is characterized in that: the air inlet (6) is arranged in the cylinder (1) on the left side of the upper section of the wall. 5. The inlet filter according to Claim 1, which is characterized in that: the air outlet (7) is arranged in the cylinder (1) on the right of the lower section of sidewall body.