Pneumatic butterfly valve of centrifugal fan: JB ball valve pneumatic butterfly valve in fan room of Wanda Plaza
Shanghai Dongfeng Pump&Valve Factory provides ball valve pneumatic butterfly valve products for the fan room of Wanda Plaza, mainly using JB ball valve pneumatic butterfly valve, which has the effect of reducing low-frequency vibration. JB ball valve pneumatic butterfly valve is also a special type of pneumatic butterfly valve for fans, which can greatly reduce fan vibration by 85%.
Introduction of centrifugal ventilation ball valve pneumatic butterfly valve:
(JB type) damping ball valve pneumatic butterfly valve performance: the body material is divided into ordinary cast iron and spheroidal cast iron. The body of spheroidal cast iron is hot-dip galvanized and has good weather resistance Special structural design, height can be adjusted according to actual needs.
It is light and firm in appearance and easy to install. It is suitable for all kinds of mechanical internal damping devices. The ball valves are subject to heat treatment, ED rust prevention, paint baking and other procedures. The load deflection of 20mm and 40mm can effectively eliminate the vibration of mechanical structure. Bottom anti sliding, easy installation, high safety, easy control and adjustment, can effectively eliminate floor vibration, and the price is relatively cheap.
Main purpose of damping ball valve pneumatic butterfly valve: JB damping ball valve damper is applicable to various water chillers, cooling towers, floor fans or floor air conditioning boxes and other equipment.
Installation instructions for pneumatic butterfly valve of damping ball valve: before installing the damper of damping ball valve, please confirm whether the model, specification and model of the damper are correct. The compression amount of the shock absorber is generally 10-25mm. After the shock absorber is placed in the correct position, it is necessary to remove the fixing bolts first, and then install the fixing feet of the equipment on the shock absorber to fix it. Fix the shock absorber with foundation bolts first. Adjust the height of the shock absorber so that the equipment is level. Adjust the nut in a clockwise direction upward and counterclockwise direction downward, and then connect the pipeline after the horizontal adjustment.
If the shock absorber load is increased due to the addition of suspended pipes in the connecting pipeline beside the machine or water tower, additional pipe shock absorbers must be installed to avoid insufficient shock absorber load!
Introduction to centrifugal fan:
Centrifugal fan is a positive displacement fan, with impeller end face, fan front and rear end covers. The principle is a rotary compressor that uses two blade rotors to make relative movement in the cylinder to compress and transport gas. The blower is simple in structure and easy to manufacture. It is widely used in aquaculture oxygenation, sewage treatment aeration, cement transmission, and more suitable for gas transmission and pressurization in low pressure occasions. It can also be used as a vacuum pump.
Centrifugal fan is composed of four parts: casing, wallboard, impeller, inlet and outlet muffler, etc.
Fan structure drawing, enclosure: mainly used to support wallboard, impeller, muffler and fixing. Wall plate: mainly used to connect the casing and the impeller, support the rotation of the impeller, and play the role of end sealing. Impeller: it is the rotating part of Roots blower, which is divided into two leaves and three leaves. However, due to the advantages of three leaves, such as less air pulsation, less noise and smooth operation than two leaves, it has gradually replaced the two leaves Roots blower. Muffler: used to reduce the noise generated by the inlet and outlet airflow pulsation of Roots blower. Roots blower is a kind of volumetric fan. There are two three blade impellers rotating relatively in the space sealed by the casing and wall plate. Because each impeller uses involute or the contour of cycloid as the impeller processing profile, the three blades of each impeller are identical, and the two impellers are identical, which greatly reduces the processing difficulty. Numerical control equipment is used during impeller processing to ensure that no matter where the two impellers are rotated, a certain small clearance can be maintained under the condition that the center distance between the two impellers is constant, so as to ensure that the gas leakage is within the allowable range. The two impellers rotate in opposite directions. Because the clearance between impellers and impellers, impellers and casings, impellers and wallboards is small, a vacuum state is formed at the air inlet. Air enters the air inlet chamber under the action of atmospheric pressure. Then, two of the blades of each impeller form a sealed chamber with wallboards and casings. The air in the air inlet chamber is, The sealing chamber formed by two blades is constantly taken to the exhaust chamber, and because the impellers in the exhaust chamber are meshed with each other, the air between the two blades is squeezed out. In this way, the air is continuously transmitted from the air inlet to the air outlet, which is the whole working process of Roots blower.
Introduction to Wanda Plaza:
Baoshan Wanda Plaza is located at the junction of Shanghai Baoshan District and Zhabei District, close to Metro Line 1, about five minutes' walk from Gongkang Road subway station, and about 12 minutes' drive to the square. The transportation is convenient, the surrounding population is dense, and the consumption demand is large. Baoshan Wanda will continue the urban complex form of Wanda Plaza with a full range of business types, good quality and strong customer gathering force, and build a new fashion life center in northern Shanghai with boutique stores in the pedestrian street and major stores such as Yiyi Food, Wanda Cinema, Wanda Department Store, Gome, Wal Mart, KTV, and big players.
Shanghai Dongfeng Pneumatic Butterfly Valve Group Co., Ltd. provides ball valve pneumatic butterfly valve products for the centrifugal fan room of Wanda Plaza project, mainly using JB type ball valve pneumatic butterfly valve, which has the effect of reducing low-frequency vibration. JB type ball valve pneumatic butterfly valve is also a special type of pneumatic butterfly valve for fans, which can greatly reduce fan vibration by 85%.