Jufeng brand 4-72-11 explosion-proof centrifugal fan fan snail type centrifugal fan

Centrifugal Ventilator | Centrifugal Fan | Fan | Explosion-proof Fan
Product Description
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Use of Fan
- type centrifugal fan can be used for indoor ventilation in general factories and large buildings It is used to transport air and other unnatural gases that are harmless to the human body and non-corrosive to steel.
rrr fan form
Viewed from the motor side, the impeller rotates clockwise, which is called a right-hand fan, and is represented by the right. The impeller rotates counterclockwise, and is called a left-hand fan, which is represented by the left. The outlet position of the fan is expressed by the air outlet angle of the casing. - type fans are made into various forms when leaving the factory, and the user can install them in the required position according to the requirements. There is no need to specify when ordering. .The air outlet position adjustment range is ~, and the interval is. ~The air outlet position adjustment range~, the interval is. ~The position of the air outlet is made into three fixed positions, which cannot be adjusted. Please indicate it when ordering. There are four types of fan transmission modes: B and B. -type fans adopt type transmission, -type adopts type transmission, and -type adopts B type transmission.
rrr Structural Features
The -type fan is mainly composed of impeller, casing, air inlet and other competing parts, which are distributed with direct-coupled motors. -In addition to the above parts, there are also transmission parts, etc.
◆The impeller is composed of backward-inclined airfoil blades, a curved front disc and a flat rear disc. It is made of steel plate or cast aluminum alloy and has been corrected by dynamic and static balance. It has good air performance, high efficiency and smooth operation. .
◆The casing is made into three different types. The casing is made as a whole and cannot be disassembled. The original casing is made into three parts. In addition to being divided into three halves horizontally along the middle, the upper part is divided into two halves vertically along the center line and connected with bolts.
◆The air inlet is made as a whole and installed on the side of the fan. The cross-section parallel to the axial direction is curved, which allows the gas to enter the impeller smoothly with less loss.
◆The transmission part consists of the main shaft, the bearing box, the flow bearing, the pulley or the coupling.
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Performance and Selection
This sample only gives the dimensional performance table and curve of the prototype. The dimensional performance parameters of the above fans are calculated from the performance and curve.
Table-type prototype dimensionless performance table
The formula for calculating dimensioned parameters from dimensionless parameters:
3.
In the formula: -Flow rate (3/)- Full pressure-required power
-impeller blade outer edge linear speed-mechanical efficiency
-full pressure compressibility coefficient-internal power impeller blade outer edge diameter
Intake density (/3)- Motor reserve coefficient
.
Main technical parameters of rrr fans
. Company introduction
Zhejiang Jufeng Ventilation Equipment Co., Ltd. was founded in 2001. The company takes market development and technology development as the forerunner. , specializing in the production of various fan products such as instrument fans, axial flow fans, explosion-proof fans, fire smoke exhaust fans, centrifugal fans, roof fans and mixed-flow fan cases, and has production qualification certificates for various types of fans and coal mine products) and is a national A few member units of the Fan Industry Association have passed: quality management system certification, and the products have been excellent in previous industry quality random inspections. The company also enjoys self-operated import and export rights.
rrr Ordering Instructions
When ordering, please specify the fan model, flow rate, pressure, speed, motor power and whether ship inspection is required.
If the product cannot be used within the year due to manufacturing quality and other reasons, our factory will guarantee repair, return and replacement.
(Note: If the fan needs brackets and motor voltage, please indicate it when ordering)
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