Analysis on the troubleshooting of grate in garbage-to-energy incinerator

     Waste-to-energy incinerators are important equipment for modern urban waste treatment and energy utilization. The feeder and grate are its core components, and their operating status is directly related to the efficiency and stability of the entire system. This article will analyze the common faults of the feeder and grate of waste-to-energy incinerators and propose corresponding treatment measures.

01  Grate forward and backward failure

Failure phenomenon: The grate is easy to move forward but not easy to move backward.

Reason 1: The material is too thick or the limit switch is faulty.

Treatment method: Check and adjust the material thickness, check the limit switch, and replace it if necessary.

Reason 2: Fuel supply system failure: including low oil level in the tank, low outlet pressure of the main oil pump failure, oil filter blockage, main oil pump blockage, etc.

Treatment method:

Step 1: Check whether the oil level in the tank is within the required oil level range, otherwise the tank needs to be refueled;

Step 2: The outlet oil pressure of the main oil pump is low, and the pressure adjustment knob on the main oil pump body can be adjusted to adjust the pressure to normal pressure (generally 18-20Mpa);

Step 3: Clean the main oil pump outlet filter and the main oil pipe return oil filter;

Step 4: Adjust the main oil pump outlet electromagnetic overflow valve to ensure that there will be no overflow during normal operation;

02  Abnormal grate movement

Fault phenomenon: grate action is stuck.

Cause analysis: proportional directional valve is stuck.

Solution: clean or replace the proportional directional valve

03 The grate cannot move
Fault phenomenon: The grate does not move.

Cause analysis: Hydraulic system failure.

Solution:
Step 1: Check whether the hydraulic cylinder's oil inlet and oil return manual valves are in a fully open state.

Step 2: Verify whether the hydraulic cylinder has internal leakage: Remove one high-pressure hose of the cylinder (the hydraulic cylinder usually has two high-pressure hoses, and you can choose to remove one of them). If the feeder or grate does not move forward, and oil continues to flow out of the oil port of the removed hose, this indicates that the cylinder has internal leakage, resulting in insufficient thrust and unable to effectively drive the feeder. In this case, the cylinder body or seal can be replaced on site to solve the internal leakage problem.