Type 4-68 centrifugal fan

Product Introduction:

I. USES of fan:

Type 4-68 centrifugal fan (hereinafter referred to as fan) can be used as general ventilation. Its conditions of use are as follows:

1. Application site: as the indoor ventilation for general factories and large buildings, it can be used as input gas or output gas.

2. Type of gas to be transported: air and other gases that do not spontaneously ignite, are harmless to human body and have no corrosive effect on steel materials.

3, impurities in the gas: the gas is not allowed to have viscous substances, dust and hard particles contained no more than 150 mg/m3.

4. The temperature of the gas shall not exceed 80 degrees.

Ii. Type of fan:

1. The fan is made of single inhalation. The machine number is numbered numbered 2.8, 3.15, 3.55, 4, 4.5, 5, 6.3, 8, 10, 12.5, 16, 20 and other twelve machine Numbers.

2, each fan can be made into right rotation or left rotation two types, from one end of the motor face, impeller rotation clockwise, known as the right rotation fan, with the "right". Rotating counterclockwise is called a left rotating fan, denoting "left".

3. The outlet position of the fan is expressed as the outlet Angle of the casing. "Left" and "right" can be made into 0O, 45o, such as 135O, 180o, 225o six angles.

4, fan transmission mode: there are A, B, C, D four, type A is adopted for no. 2.8-5, with the motor directly connected to drive, the impeller and housing of the fan are directly fixed on the motor shaft and flange (the motor USES D2 / T2 type); N06.3-12.5 adopt the cantilever supporting device, which is divided into two transmission modes: Type C (belt drive pulley on the outside of the bearing) and Type D (coupling drive); No. 6, 20 B type cantilever supporting device, belt transmission, pulley in the middle of the bearing.

Iii. Structural features of the main components

The numbered 2.8-5 of type 4-68 fan is mainly composed of direct-connected electric motor assigned by impeller, chassis, air inlet and other parts. Numbered 6.3-20 In addition to the above part there are transmission parts.

1. Impeller: 12 rearward blade blades are welded between the solitaire cone cover and the flat plate disc. All made of steel plate, and through static and dynamic balance more positive, good air performance, high efficiency, smooth operation.

2. Case: The case is a snail shape made of common steel plate welding, and the case is made into two different types. The case is composed of no. 2.8-12.5 as a whole and cannot be disassembled. The numbered 16 and 20 are made into three types of shells, which are divided into two halves along the middle water division plane, and the upper half is divided into two halves along the vertical center line again, connected by bolts.

3. Air inlet: it is formed into the integral structure of collecting and collecting streamline, which is bolted to the fan entrance side.

4. Transmission set: it is composed of spindle, bearing box, rolling bearing, pulley or coupling, etc. The spindle is made of high quality steel. No. 6.3 -- 12.5 Four machine fans, the overall structure of the bearing box, there are thermometers and oil marks on the bearing, no. 6, 20 two machine fans with two parallel bearing seat, there is a thermometer on the bearing seat, using bearing grease lubrication.

Table of performance parameters of Type 4-68 No.2.8A, 3.15A and 3.55A

Table of performance parameters of Type 4-68 No.4a, 4.5a and 5A

Table of performance parameters of Type 4-68 No.4a, 4.5a and 5A