Roots blower piston ring seal
The piston ring seal of Roots blower is a commonly used gas sealing device in Roots blower. The following is a detailed introduction to it:
1、 The principle of piston ring sealing
Piston ring seal, also known as expansion ring seal, isolates the inside and outside of the Roots blower through mechanical motion to prevent leakage of liquids and gases. Specifically, when a pair of impellers of a Roots blower rotate in the opposite direction under the rotation of the motor, a closed box is formed between them and the casing. As the impeller rotates back and forth, the air inside the sealed box is compressed and discharged to the outlet. At this point, the piston ring sealing device plays a crucial role, ensuring that the gas during this process does not leak outside the fan, thereby ensuring the boosting effect of the fan.
2、 Structure and installation of piston ring seal
The piston ring seal is usually composed of an expansion ring, an expansion ring inner sleeve, a guide shaft sleeve, and other components. During installation, it is necessary to make a machining guide shaft sleeve based on the inner hole diameter of the expansion ring outer sleeve that needs to be installed and the length of the expansion ring inner sleeve that needs to be installed. The inner diameter of the guide shaft sleeve decreases gradually in the direction away from the inner sleeve of the expansion ring, and its inner wall is conical. During installation, install the expansion rings one by one into the expansion ring grooves of the expansion ring inner sleeve, and then install the installed expansion ring inner sleeve and expansion ring into the large end of the guide shaft sleeve. During installation, it is necessary to apply lubricating grease or oil to the inner diameter cone of the guide shaft sleeve and the expansion ring groove of the expansion ring inner sleeve, so that the expansion ring can smoothly slide into its interior from the large end of the guide shaft sleeve.
3、 Characteristics of piston ring sealing
1. Good sealing effect: The piston ring sealing device can effectively prevent gas leakage and ensure the pressurization effect of the Roots blower.
2. Strong adaptability: The piston ring seal is suitable for various gas media, including air, coal gas, biogas, etc., and can meet the needs of different media.
3. Compact structure: The piston ring sealing device has a compact structure and occupies a small space, making it easy to install and arrange in Roots blowers.
4. Easy maintenance: The piston ring sealing device is easy to disassemble and replace. When the seal is worn or damaged, it can be easily replaced, reducing maintenance costs.
4、 Application and Maintenance of Piston Ring Seals
Piston ring seals are widely used in various Roots blowers, especially in large Roots blowers. During use, it is necessary to regularly check the operation of the piston ring sealing device to ensure that it is in good working condition. If a decrease in sealing effect or leakage is found, timely maintenance and replacement are necessary. In addition, it is necessary to pay attention to regular lubrication and maintenance of the fan to extend its service life and improve operational efficiency.
In summary, the piston ring seal of Roots blower is an indispensable part of Roots blower, which ensures the boosting effect and sealing performance of the blower. During use, regular maintenance and upkeep are required to ensure its long-term stable operation.
