Inlet silencer
The invention relates to an inlet silencer which can be used for carrying out noise reduction on gas introduced into a screw compressor. The inlet silencer is characterized in that an upper-end annular sealing plate is fixed at the upper end part of the inner wall of a silencer cylinder body; a lower-end annular sealing plate is fixed at the lower end part of the inner wall of the silencer cylinder body; the silencer cylinder body is internally provided with an inner cylinder body; a first silencing screen is arranged between the inner cylinder body and the silencer cylinder body; an upper ring plate is fixed at the upper end part of the inner wall of the inner cylinder body; a lower ring plate is fixed at the lower end part of the inner wall of the inner cylinder body; a support ring is fixed in the middle of the inner wall of the inner cylinder body; a support rib plate is fixed on the support ring; a hollow porous plate is fixed in the support rib plate and is internally provided with a second silencing screen; silencing piece support rods are fixed in the inner circles of the upper ring plate and the lower ring plate; a side plate is fixed on each silencing piece support rod; and the side plates are fixed on the hollow porous plate. The inlet silencer can effectively carry out noise reduction on the gas introduced into the screw compressor so as to improve a working environment of workers, and has the advantages of simple structure, reasonability and the like. 1. An inlet silencer, which is characterized in that: it includes silencer cylinder (1), upper seal head (2) and the lower head (3), in the muffler cylinder (1) is fixed with the upper end portion of the head (2), in the muffler cylinder (1) is fixed with the lower end of the bed (3), the upper head (2) is fixed with the inlet interface (4), in the lower head (3) is fixed with the air outlet (5), in the muffler cylinder (1) is fixed with the inner wall of the upper end of the upper end part of the link closing board (6), in the muffler cylinder (1) lower end of the inner wall of the lower end of the is fixed link closing board (7), in the muffler cylinder (1) is provided with an inner cylinder body (8), an inner cylinder body (8) for the orifice plate, an inner cylinder body (8) of the end part on the outer circle of link closing board with the upper end (6) of the inner circular fixed, an inner cylinder body (8) with the lower end of the lower end part of the outer circle of the link closing board (7) of the inner circular fixed, the inner (8) and a muffler cylinder (1) is provided with a 1st between the silencing screen (9), the inner (8) on the inner wall of end portion is fixed with a on girth (10), the inner (8) lower end of the inner wall of the is fixed with a next girth (11), the inner (8) is fixed in the middle of the inner wall of the supporting ring (12), the supporting ring (12) is fixed with a supporting plate (13), the support plate (13) is fixed with a hollow orifice plate (14), in the hollow orifice plate (14) is provided with a 2nd silencing screen (15), the upper ring (10) and the lower furnace (11) are fixed with the silencing of the inner supporting rod (16), each silencing the support rod (16) is fixed on the side plate (17), side plate (17) is fixed on the hollow orifice plate (14) is. 2. The inlet silencer according to Claim 1, which is characterized in that: the upper head (2) and the air intake port (4) is fixed on the reinforcing plate (18). 3. The inlet silencer according to Claim 1, which is characterized in that: in the lower head (3) and the air outlet (5) is fixed with a lower reinforcing plate (19). 4. The inlet silencer according to Claim 1, which is characterized in that: in the muffler cylinder (1) on the outer wall surface of the end portion is fixed with a lifting lug (20).