Air duct fittings in spiral air duct fan
Air duct fittings used to be made by hand, and each process is time-consuming and laborious. With the advent of mechanization, they are now made by punch press. This kind of production is not much different from manual production. It is easy and can be produced in large quantities. However, it is not the finished products or the finished products, as well as the subsequent grinding and polishing. Each process should be carefully operated.
Air duct accessories are integrated and perforated multi-functional machines. The working principle of aluminum plate spiral air duct machine is driven by three high-power motors. With the help of the principle of lathe, the stability of Buddha beads is increased. Fine tuning of the knife with slider can make the fine tuning of the punch more accurate and in place. The external design of belt is convenient for repair, and the design of four jaw chuck, Linkage automatic centering, suitable for all kinds of ventilation pipe accessories
Ventilation pipe fittings refer to elbows, tees, crosses, various reducing and special-shaped pipes, guide vanes and flanges in the pipeline system.
There are six kinds of common ventilation pipe fittings. Therefore, the spiral duct fan manufacturer introduces its functions as follows:
1. Flange plate
Flange is used to expand the connection between ventilation pipes and between ventilation pipes and accessories, and increase the strength of ventilation pipes. According to the section shape, it can be divided into rectangular flange and circular flange.
2. Valve
The valves in the ventilation system are mainly used to sail, close the air duct and air outlet, adjust the air volume in the pipeline, balance the resistance, etc. These valves are installed in front of the outlet air duct, main lower air duct, branch air duct or air distributor. Commonly used valves are gate valves and butterfly valves.
3. Flexible spool
In order to prevent the vibration of the fan from being transmitted indoors through the air duct and generating noise, a flexible short pipe with a length of 150 ~ 200mm is often installed at the inlet and outlet of the fan. The flexible short pipe of the ventilation system is generally made of canvas, and the ventilation system conveying corrosive gas is made of 0.8 ~ 1.0mm thick acid resistant rubber or PVC plastic cloth
4. Elbow
Elbow is a fitting used to change the direction of ventilation duct. According to its cross-sectional shape, it can be divided into circular elbow and rectangular elbow. 90 radius of curvature of elbow and number of intermediate joints
5. Tee
A tee is a branch or assembly fitting of a ventilation duct. According to its cross-sectional shape, it can be divided into circular tee and rectangular tee.
6. Bend back and forth
Bend back and forth in the ventilation duct to cross or make way for other ducts and building components. According to its cross-sectional shape, it can be divided into circular and rectangular bends.
2、 Ventilation duct components
Ventilation duct components refer to various tuyeres, valves, exhaust hood, hood, inspection door and measuring hole in ventilation and air conditioning duct system.
Among them, the valve regulating part of the ventilation pipe parts shall be installed at the position convenient for operation, the valve plate shall be inserted along the air flow direction, the fire damper shall be installed at the correct position, and the fusible parts shall be installed after the installation of the system. The installation of various air outlets shall be stable and accurate. The adapter shall be flexible and firmly connected with the air duct. Flexible short pipes shall be installed with proper tightness and shall not be twisted.