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Let's all learn about reciprocating grate.
Release Time:
Feb 01,2022
Reciprocating GrateRefers to the component in a boiler where solid fuel is effectively piled and burned. It consists of a grate frame and grate bars, which are usually cast from cast iron. After assembly, there must be a ventilation gap between each part. The grate refers to the component in the boiler where solid fuel is piled and effectively burned. It consists of a grate frame and grate bars, which are usually made of cast iron. After assembly, a ventilation gap needs to be maintained between each piece, and there is often a separate ventilation chamber below the grate that can adjust the air volume, allowing air to enter the fuel layer through the gaps, and the ash after combustion can be discharged manually or mechanically.
The front end of the reciprocating grate is equipped with an elastic wear-resistant scraper to reduce wear and extend the service life of the grate. The bottom surface of the grate is equipped with cooling steel plates, which provide good cooling effect for the primary air, and the grate hardly burns. The grate is made of high-quality heat-resistant alloy steel. The structure and movement mode of the grate are simple, not easy to block, with a low failure rate, saving a lot of maintenance and upkeep costs. The grate is replaced starting from the fourth year, with an annual replacement rate of less than 2%. The modular structure of the grate section is conducive to road transportation and on-site installation, allowing for complete assembly in the workshop, improving the precision required for on-site installation.
Reciprocating GrateThe continuous running time of the cold test should not be less than 8 hours, and the cold test should meet the following requirements: The grate bars should rotate smoothly at the sprocket shaft. If an arch is found, tighten the two fastening bolts. The Z-shaped small gap between the active grate bars on both sides, the side sealing blocks, and the side sealing angle steel should not be less than 4 millimeters. The active grate should mesh well with the sprocket. The distance between the two ends of the grate long pin and the side plates of the grate should be kept equal at the sprocket shaft. If one end is found to be rubbing against the side plate, it can be tapped with a hammer at the long waist hole to keep the distances equal, and the grate should not have serious unilateral tilt. There should be no blockage when the grate rotates. The ignition door should open flexibly, and the coal gate should be easily raised and lowered. The distance between the left and right sides of the coal gate and the grate surface should be the same to ensure equal thickness of the fuel layer on both sides of the furnace. If the distances are not equal, adjust them with the adjustment bolts to make them equal. The cover plate on the coal gate should be tightly covered to prevent coal from leaking in and blocking the up and down movement of the coal gate.
With the continuous introduction of policies to promote economic development in the country, the passive reciprocating grate industry in China has also developed greatly, showing a significant acceleration trend in both development speed and industry scale. The rapid development of the passive grate industry is also attributed to the active participation and wide application of various advanced passive grate products in the market. Reciprocating grates generally do not burn out. If the grate burns out, it is caused by ash accumulation in the middle gas chamber of the grate. Generally, even if the grate is frequently burned and stopped, it is easy to burn out the side seals.
The sealing iron of the side seal is generally heat-resistant cast iron, but the heat-resistant temperature is not very high. If this part is damaged, air leakage is severe, and the combustion condition of the entire reciprocating grate is very poor. The trial operation time of the reciprocating grate should generally not be less than 8 hours. The trial operation speed should not be lower than level two. During the adjustment phase from low speed to high speed, it is necessary to check the movement of the safety mechanism of the drive device and set the safety device of the reducer. Generally, alloy pipes are purchased.Reciprocating Grate.
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