Troubles and countermeasures of air classifier
In the metal powder industry, the air classifier is a common equipment. It has the function of accurately classifying and segmenting ultra-fine powder according to the particle size. It is especially suitable for iron powder, magnesium powder, stainless steel powder, aluminum powder, titanium powder, Super fine grade of alloy powder and other materials. The air current classifier is a type of dry air classification equipment. It is different from the general classification equipment with a screen. It is a centrifugal classifier with a flow field control device and a high-speed turbine rotor. In the grading process, no pollution is generated, and no temperature rises. An inert gas protection device can be added to achieve the purpose of explosion-proof and anti-oxidation.
At present, air classifiers are widely used in various industries. However, in the event of a failure or an abnormal phenomenon, the supply of raw materials must be stopped quickly, and the system should be stopped according to the actual situation, and corresponding measures should be taken.
- The powder flow at the outlet of the raw material supply pipe is not uniform, or there is an obvious gas line in the middle.
Reason: There is a foreign matter blockage at the outlet of the raw material supply pipe, or there is an attachment.
Corresponding measures: remove foreign objects or attachments. The user cannot disassemble the raw material supply pipe without authorization. If there is an abnormality in the air classifier that needs to be decomposed, you should contact the supplier in time, and you need to send the spray pipe to the supplier or the supplier will send someone to maintain it.
- The powder flow of the classifier body oscillates greatly
Reasons: (1) The inlet of the raw material supply pipe is blocked: the powder attached to the wall of the inlet of the raw material supply pipe suddenly collapses due to some reason, temporarily blocking the inlet. (2) The pipeline is blocked or leaked.
Corresponding measures: The feed pipe has an adaptive function, which can balance and solve the problem by itself. At this time, there is no need to stop the machine, and the air flow classifier will recover by itself after a period of time. Sometimes it can be manually assisted in recovery. Check the leakage of pipeline blockage.
- The collection rate has changed a lot
Reasons: (1) the pipeline or the dust collector is blocked; (2) the pipeline is leaking; (3) the grading knife is severely worn.
Corresponding measures: Check the blockage and leakage of the air flow classifier pipeline or collector. Replace severely worn grading knives in time.
- Fan overload trip
Reason: The classifier body, pipeline or dust collector is blocked.
Corresponding measures: Check the blockage of the air flow classifier body, pipeline or collector.
The air classifier is a kind of mechanical equipment, so it is inevitable that it will malfunction during long-term use or improper operation. Under normal circumstances, the manufacturer of the air classifier will conduct training for the user’s operator after the equipment is sold, which includes troubleshooting and troubleshooting. However, if there are some major problems, it is recommended to contact the manufacturer to achieve Quickly resolve.