The screw press is mostly used for pressing soybeans, rapeseed, cottonseed, peanut kernels, sesame seeds, etc. It is an ideal oil pressing machine for small oil mills in rural areas. For various reasons, sometimes there are problems such as less oil or even oil, which must be eliminated in time.

1, poor oil production

(1) The oil seam of the pressed strip is too tightly packed with oil residue, broken ends or squeezed strips. At this point, the oil residue should be removed or the squeeze line should be re-adjusted. If there is oil in the hopper, stop the feeding and slowly pour out the oil with the cake to continue normal work. It is also possible to discharge the oil from the discharge opening, reassemble the pressed parts, and then press the press.

(2) The oil content of the oil is high, but the cake is too thin so that the oil cannot be discharged from the seam in time and stored in the squeezing and hopper. At this time, it should be operated according to the oil seed with high oil content. The cake should be thicker, and vice versa.

2, too much slag

(1) The oil is too dry, and the minced powder is discharged from the squeeze joint. At this time, the oil moisture should be readjusted.

(2) The oil is too wet, the pressure is not formed, and the oil residue can not be separated. If the oil discharge joint is too large, the slag will be squeezed out from the oil joint, and the oil moisture and the tightness of the squeezed strip should be adjusted.

3, low oil yield

(1) The raw material is too wet or too dry, it is damp and mildewed, the grain is not full, and there are too many impurities. The oil should be re-selected or the oil moisture should be adjusted.

(2) The oil draining joint is blocked by the oil slag. It should be removed and the tightness of the pressed bar should be adjusted according to the level of oil content.

(3) Parts are worn and worn parts should be replaced.

(4) When the cake is too thin or too thick, the cake thickness or oil should be adjusted.

(5) At the beginning of the extrusion, the temperature of the pressing is too low, and the mill should raise the temperature.

4, the screw shaft is stuck

(1) When there is too much feed in the initial stage of the press, the fried oil seeds can be slowly fed and repeatedly milled to eliminate.

(2) During the pressing process, the material is cut in the pressing squeezing, because the squeezing is blocked by the oil. Therefore, the feeding should be continuous and uniform. Once the blockage occurs, the power should be turned off immediately, the feeding should be stopped, and the discharge plate should be opened, the screw shaft should be removed, the oil in the crucible should be removed, and the press can be re-pressed.

5. Other reasons affecting production

(1) The cleanliness of raw materials is not enough, and sand and impurities enter the press.

(2) The screw shaft or the cake opening is not smooth, affecting the feeding and discharging of the cake, and grinding with a grinding wheel. It is also possible to mix the material with large friction coefficient such as chaff into the cake, add appropriate water, start up, and slowly feed. The material is pressed and the cake is polished.

(3) If the screw shaft speed is too high or too low, the speed should be adjusted until it meets the requirements.

(4) The screw shaft is polished and parts should be replaced.