Bell mouth

About: Bell mouth is a research topic. Over the lifetime, 603 publications have been published within this topic receiving 1624 citations.

Novel yarn bell mouth

Abstract: The utility model relates to the technical field of textile machinery and discloses a novel yarn bell mouth. The novel yarn bell mouth comprises a flared bell mouth main body; a vertical yarn slot is formed in the most front of the front side of the bell mouth main body; the yarn slot runs through the integral bell mouth main body from top to bottom; a rotating shaft is arranged at one side of the yarn slot and on the bell mouth main body; a protection cover capable of rotating around the rotating shaft is fixedly arranged on the rotating shaft; a clamping block is arranged at the other side of the yarn slot and on the bell mouth main body; the other end of the protection cover is buckled on the clamping block. According to the novel yarn bell mouth, the existing yarn bell mouth technology is innovated; the vertical yarn slot is formed in the most front of the front side of the bell mouth main body, the yarn slot is blocked by the protection cover and when threading needs to be carried out, the protection cover is opened and a yarn is directly placed into the bell mouth main body, so that threading is simple, rapid and convenient to carry out and working efficiency of a spinner is effectively improved.

Centrifugal air blower and air blower for air conditioner

Abstract: PROBLEM TO BE SOLVED: To restrain turbulence of an air flow in a bell mouth part. SOLUTION: Among an outer wall surface of a scroll casing 74, a suction side outer wall surface 74c continuing with the bell mouth part 76 is formed in a flat shape without a level difference. Thus, since the occurrence of turbulence such as a vortex in suction air flowing toward a suction port 75 can be restrained, turbulence of the air flow in the bell mouth part 76 can be restrained, and induction of a new vortex loss and noise can be prevented. COPYRIGHT: (C)2004,JPO&NCIPI

Heavy oil vertex flow type pneumatic atomized spray injector

Abstract: The utility model provides a heavy-oil vortex-flow-type and pneumatic-atomizing spray injector, which is suitable to the combustion device of the metallurgy, the petrifaction, the heavy machinery and the light industry construction material departments, comprising a nozzle head and a nozzle core The nozzle head forms a cylindrical shape, a front end nozzle is a bell mouth, and the core forms a ten shape and a positioning ring forms a quincunx Circle surfaces which are corresponding to the access of the positioning ring are provided respectively with a plurality of cyclone holes which make the airflow enter into an oil cavity along the tangential direction, and the shaft line of the cyclone holes and the shaft line of the nozzle forms the definite angle The nozzle of the core forms a bell shape, and a ring seam is arranged between the side edge of the core and the bell-shaped inner edge of the nozzle head The utility model has the advantages of good atomizing performance and high combustion efficiency, is suitable to a general heavy-oil burning furnace, and is also suitable to a high-pressure burning-oil kiln

Bell annular boss sealing structure of pipe faucet of concrete

Abstract: The invention relates to a bell mouth ring boss sealing structure in a concrete reinforced pipe bell and faucet. The concrete reinforced pipe consists of a bell mouth, a faucet and a pipe; the bell mouth and the faucet are coaxially and fixedly arranged in a pipe core at the two ends of the pipe; wherein, an inner wall of the concrete reinforced pipe bell is coaxially and fixedly provided with an inner ring bulge platform along the radial direction; an outer wall of the concrete reinforced pipe bell is coaxially and fixedly provided with an outer ring bulge platform along the radial direction. The invention has the advantages of simple integral structure, scientific and reasonable design, low construction cost and simple technique; the bulge platform can increase the sealing property between concrete reinforced pipes and raise the integral sealing level of concrete reinforced pipes.

Blower, outdoor unit and refrigeration cycle device

Abstract: PROBLEM TO BE SOLVED: To provide a blower etc. which can achieve suppression of noise.SOLUTION: A blower includes: a propeller fan 1 having a plurality of blades which cause a flow of gas by rotating around a rotation axis; a bell mouth 20 which forms a wall face forming a straight pipe part 3 as a cylindrical wall face, a diffuser part 4 which is located at a position closer to a gas blowing-out side than the straight pipe part 3 and a suction opening part 2 which is a suction side, on an outer side of an outer periphery end along a rotation direction of the blades of the propeller fan 1, and which controls a flow of gas; a fan guard 5 which has a grille covering the diffuser part 4 of the bell mouth 20; and a sound insulating plate 13 which has a wall face connecting a cylindrical windward side straight pipe part 14 parallel to the straight pipe part 3 of the bell mouth 20 and a leeward straight pipe part 16 by way of an S-shaped part 15 which is a curved duct part having a substantially S shape, and which is attached between the fan guard 5 and the propeller fan 1.