The sound insulation box is assembled, which is convenient for disassembly and assembly. The air inlet shall be set at the motor cooling fan of the sound insulation box, and the air outlet shall be set at the appropriate position to make the air in the box convection, and the observation window and access door shall be set to facilitate observation and maintenance. In order to solve the vibration problem of induced draft fan, metal corrugated pipe or temperature resistant hose is used at the connection of air duct, and vibration reduction bench is set on the foundation of fan. Comprehensive measures such as noise elimination, sound insulation and valves can make the noise of boiler room and environmental noise meet the national standards.
There are many kinds of electric butterfly valves for fans. How to choose the right one? Dongfeng Electric Butterfly Valve is a professional manufacturer of electric butterfly valves in China. It is mainly committed to the development and production of butterfly valve electric butterfly valve, damping electric butterfly valve, air conditioning electric butterfly valve, electric butterfly valve, suspended butterfly valve electric butterfly valve, pipeline electric butterfly valve, fan electric butterfly valve and other series of products, which are widely used in steel, power generation, petrochemical All kinds of pipes and equipment in cement, steel, urban heating and other industries have been applied in national key projects, with achievements all over the country, and are trusted by users.
The company has established a marketing network and a perfect service system in all major and medium-sized cities throughout the country to ensure that after-sales service is in place in a timely manner; As the company has followed the tenet of "quality first, integrity first, service first", it has won the trust of the majority of users. The market share is getting higher and higher, and the products sell well all over the country.
First of all, let's analyze the main differences between electric butterfly valve, valve and air cushion electric butterfly valve. The main features of electric butterfly valve are low natural frequency, long service life, simple installation and maintenance, and moderate price; The main features of the electric butterfly valve are low cost, varied appearance, damping, simple installation and maintenance free, general natural frequency of 7-10HZ, general vibration isolation efficiency, and short service life. The air cushion electric butterfly valve is characterized by low natural step rate and high damping efficiency, but it has high manufacturing cost, large low product, complex installation and maintenance, and needs to be maintained later.
Secondly, we need to understand that the vibration reduction efficiency of the fan electric butterfly valve is determined by the ratio of the natural frequency of the equipment to the natural frequency of the electric butterfly valve. The greater the ratio, the better the vibration isolation efficiency. When the electric butterfly valve is selected for the small power fan, the vibration isolation efficiency of the electric butterfly valve shall be greater than 85%, and then the ratio shall be greater than 3; When electric butterfly valve is selected for high-power fan, the vibration isolation efficiency of electric butterfly valve shall be more than 95%, and then the ratio shall be more than 5.