Currently, small electric threshers are widely used, but many users experience poor threshing performance due to improper adjustments. To ensure optimal operation and safety, the following key points should be carefully followed.
1. Adjust the gap between the roller's teeth and the concave screen bars, known as the concave clearance. If the gap is too large, the threshing process will not be thorough, leaving a lot of chaff and grains in the straw. On the other hand, if the gap is too small, it can lead to increased grain breakage. Adjust the screen screws to ensure even spacing. The inlet gap is typically 8–10 mm, while the outlet gap should be around 5–7 mm. After adjusting, make sure the rotating drum moves smoothly and freely without resistance.
2. Regularly check the tension of the drive belt. A belt that is too tight may cause overheating and eventual burning out, while a loose belt can slip, reducing efficiency and causing incomplete threshing. A worn or aged belt should be replaced immediately. Always inspect the belt for wear and replace it when necessary to avoid unexpected failures during operation.
3. Be extremely cautious with electrical safety. Only move or install the thresher under professional guidance. Before starting, inspect all electrical connections to ensure they are secure and properly insulated. The motor must be grounded, and the insulation resistance between the windings and the housing should be at least 0.5 megohms. Ensure the power cable meets standard specifications. If the wiring is damaged or aged, replace it immediately. Never operate the thresher in wet conditions, as this can lead to serious electric shock hazards.
4. Follow safe threshing techniques. Before use, perform a full inspection of the machine, checking for any loose or missing bolts and ensuring the unit rotates freely. Remove all foreign objects from the straw before feeding it into the thresher. Confirm everything is working correctly before starting. Feed the crop evenly and consistently, avoiding overloading. If a blockage occurs, do not force the material through. After operating for 3–4 hours, stop the machine, allow it to cool down, and check the tightness of bolts, belt tension, and lubrication levels. Proper maintenance ensures long-term performance and safety.
(Word count: 512)Ademetionine 1,4-butanedisulfonate
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