Several common faults of threshers

There are two types of threshers: motorized and manual. No matter which type of thresher it is, the main faults are as follows

Incomplete threshing: This is mainly caused by uneven feeding amount, excessive moisture in the grains, large threshing gap or too low drum speed.

2. Grain breakage: This is mainly caused by too small a threshing gap or too high a drum speed. This malfunction can also occur if the grains are fed unevenly or if they are too dry or too wet.

3. Unclear separation; The main reasons are insufficient air volume or incorrect air direction, damage to the screen holes of the thresher or excessive gaps between them, making the grains too wet and difficult to blow away the stems of weeds.

4. Drum blockage: This is mainly caused by the grains being too wet and the feeding amount being too large, the drum speed being too low, and the drum teeth being damaged, resulting in grass entanglement. In addition, insufficient power or too low voltage can also cause the drum to get clogged.

For the above-mentioned faults, the commonly used troubleshooting methods are:

1. Probing method: When lacking experience, use the probing method to adjust, disassemble or replace some parts, and observe the changes in fault signs to "prescribe the right medicine". If the threshing is not complete, the air volume can be adjusted and the size of the sieve holes can be changed (mainly referring to the motorized thresher).

2. Proof by contradiction: When a certain part is suspected to be problematic but cannot be confirmed, its working conditions and status can be changed to observe the changes in fault signs. If the threshing drum is clogged, if the grain is too wet or the feeding is too large, you can reduce the feeding amount and then check the changes in the fault to determine whether your judgment is correct.

3. Replacement method; If there is any doubt about a certain part, it can be replaced with a good one. Compare the changes in the signs before and after to determine the location where the fault occurred.

The above three methods can also be used in combination. In conclusion, when using a thresher, as long as one frequently observes, maintains and checks, and strictly follows the operating procedures, it is possible to achieve high efficiency, low consumption and safety.