tailieunhanh - Industrial Machinery Repair Part Episode 2 Part 2

Tham khảo tài liệu 'industrial machinery repair part episode 2 part 2', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Dust Collectors 259 Table Common failure modes of cyclonic separators THE PROBLEM THE CAUSES Continuous release of dust-laden air Intermittent release of dust-laden air Cyclone plugs in inlet chamber Cyclone plugs in dust removal section Rotor-lock valve fails to turn Excessive differential pressure Differential pressure too low Rotor-lock valve leaks Fan has high vibration Clearance set wrong Density and size distribution of dust too high Density and size distribution of dust too low Dust load exceeds capacity Excessive moisture in incoming air Foreign object lodged in valve Improper drive-train adjustments Improper lubrication Incoming air velocity too high Incoming air velocity too low Internal wear or damage Large contaminates in incoming air stream Prime mover fan blower malfunctioning Rotor-lock valve turning too slow Seals damaged 260 Dust Collectors Troubleshooting This section identifies common problems and their causes for baghouse and cyclonic separator dust-collection systems. Baghouses Table lists the common failure modes for baghouses. This guide maybe used for all such units that use fabric filter bags as the primary dust-collection media. Cyclonic Separators Table identifies the failure modes and their causes for cyclonic separators. Since there are no moving parts within a cyclone most of the problems associated with this type of system can be attributed to variations in process parameters such as flow rate dust load dust composition . density size etc. and ambient conditions . temperature humidity etc. . 13 Fans Blowers and Fluidizers Technically fans and blowers are two separate types of devices that have a similar function. However the terms are often used interchangeably to mean any device that delivers a quantity of air or gas at a desired pressure. Differences between these two devices are their rotating elements and their discharge-pressure capabilities. Fluidizers are identical to single-stage screw-type compressors or