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4-68Type centrifugal fan

One The purpose of fan:
4-68 type centrifugal fan, as a general ventilated take a breath using. The use conditions as follows:

1, Application places: as a general factory and big building indoor ventilated take a breath, which can be used as input gas, also can be used as the output gas.


2, Conveying gases sort: air and other not spontaneous combustion, no harm to human, material of steel non-corrosive gases.
3, Gas inside the impurity: gas is not allowed in the sticky, contain of dust and hard particles is not more than 150 mg/cubic meters.
4, Gas temperature: shall not be more than 80 degrees.


Two, fan model

1, The fan made into single inhalation, immediately have: № 2.8, 3.15, 3.55, 4, 4.5, 5, 6.3, 8, 10, 12.5, 16, 20 of twelve immediately.
2, Each fan can be made into right or left rotation two types, from motor end face, impeller it clockwise, called right rotation fan, "right" said. According to counter-clockwise, called reverse spin fan, "left" said.
3, Fan export location to the cabinet of outlet Angle said. The "left", "right" all can be made into 0 o, 45 o, such as 135 o, 180 o, 225 o were six Angle.
4, Fan transmission mode: have A, B, C, D, № 2.8 - 5 adopts A type, direct coupling with motor drive, and fan impeller and chassis directly in the motor shaft and fixed flange plate (motors use D2 / T2 type); N06.3 - 12.5 the cantilever support device, and divided into C type (in the belt transmission pulley bearing) and D type (with coupling could drive) two transmission ways; № l6 - 20 for B cantilever support device, belt drive, pulley among in bearing.

Three, The main component of the structure characteristics

4-68 type fan № of 2.8 5 mainly by the impeller, 2 cases, such as the distribution of the coupling straight motivation. 6.3- 20 in addition to the above 20 № part and the transmission part.
1, The impeller: the 12 pieces pour wing shape after the blade in solitary cone of welding type wheel cover and flat type among roulette. All use steel manufacturing, and through the static dynamic balance, the air has good performance, high efficiency, and stable operation.
2, The enclosure: the chassis is ordinary steel welded cracking of the body, the cabinet made two different type, № 2.8-12.5 cases made whole, can't open it. № 16, 20 cases made three open types, in addition to the water along the plane into two and a half outside, the upper along vertical center line again divided into two, bolt connection.
3, Air inlet: convergence type streamlined the overall structure, bolted to fan the entrance.
4, Transmission group: the main spindle, bearing box, rolling bearing, pulley or coupling etc. Spindle made by the high quality steel. № 6.3-12.5 four fan immediately, bearing box whole structure, bearing a thermometer in the oil and mark, № l6, 20 two immediately with two fan tied for housing, with a thermometer in housing, the bearing grease lubrication.

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