The fully sealed Roots blower enhances the adaptability of the medium by strengthening the sealing structure, and has significant advantages in special working conditions such as environmental protection and chemical engineering. The following analysis will focus on its structural characteristics, performance advantages, application scenarios, and selection criteria:
1、 Structural characteristics
The fully sealed Roots blower adopts multiple sealing technologies, including a combination design of mechanical seals, expansion ring seals, and labyrinth seals, forming a multi-stage barrier. Mechanical seals achieve zero leakage through the fitting of dynamic and static rings, expansion ring seals utilize elastic compensation gaps, and labyrinth seals reduce leakage risks through tortuous channels. This composite sealing structure can be adapted to special media containing corrosive gases, flammable and explosive gases, etc., and can prevent accidents caused by medium leakage in chemical, pharmaceutical and other scenarios.
2、 Performance advantages
Sealing, medium
The fully sealed design can prevent lubricating oil from mixing into the medium and ensure gas purity. For example, in food processing, the oil content can be controlled below 0.01ppm when delivering clean air.
Adapt to high-pressure working conditions
After the sealing upgrade, the pressure resistance of the fan has been improved, and it can operate stably in higher pressure environments. For example, in reverse osmosis membrane blowing, gas can be continuously supplied at a pressure of 0.08MPa.
Long lifespan and low maintenance
The wear rate of mechanical seals is reduced, and the maintenance cycle is extended. For example, mechanical seals using silicon carbide friction pairs can have a lifespan of over 20000 hours and reduce maintenance costs.
3、 Application scenarios
Chemical and Pharmaceutical Industry
Transporting toxic media such as chlorine and ammonia, or process gases involved in chemical reactions. For example, in the chlor alkali industry, the leakage rate during the transportation of chlorine gas can be controlled below 0.1.
Environmental Protection and Energy
Used for scenarios such as biogas purification and landfill gas recovery. For example, in biogas power generation projects, the amount of oxygen mixed in during biogas transportation can be controlled within 0.5 to avoid the risk of explosion.
Special gas treatment
Transporting flammable and explosive gases such as hydrogen and natural gas. For example, in hydrogen energy production, fully sealed fans can ensure stable hydrogen delivery pressure with a fluctuation range of less than ± 1.
4、 Key selection points
Sealing form matches the characteristics of the medium
When transporting highly corrosive media, mechanical seals made of Hastelloy or titanium alloy materials should be selected.
When transporting flammable and explosive gases, priority should be given to using an expansion ring sealing structure with a flame arrester.
Pressure and temperature adaptability
Under high-pressure conditions, the pressure resistance of the sealing components needs to be verified. For example, at a pressure of 0.1MPa, mechanical seals with a pressure resistance rating of ≥ 0.15MPa should be selected.
High temperature media should use high-temperature resistant materials, for example, when transporting hot air at 200 ℃, the sealing ring should be made of fluororubber material.
Energy efficiency and noise balance
Priority should be given to models with isothermal efficiency ≥ 75, for example, a three bladed rotor design can reduce energy consumption.
It is necessary to meet the noise standards of industrial areas, such as controlling the noise level to ≤ 80dB (A) when used near residential areas.
