The main component of the industrial juicer is the screw. The principle is that the bottom diameter of the screw increases gradually along the direction of the slag outlet, while the pitch decreases gradually. When the material is pushed by the screw, the volume of the screw cavity decreases, forming the pressing of the material. The rotation direction of the screw spindle is clockwise from the hopper to the slag groove. The material enters into the feeding hopper and is pressed under the push of the screw. The squeezed juice flows into the juice container at the bottom through the filter screen, while the waste material is discharged through the annular space formed between the screw and the pressure regulating conical part. The size of the space can be adjusted by moving the pressure regulating head along the axial direction. It is used in clockwise direction (when the bearing seat of hand wheel is rolled from the slag chute of the equipment to the hopper end, the pressure regulating head is left, and the empty space is reduced, otherwise, the empty space is increased.) Change the size of the open space, that is, adjust the resistance of slag discharge. But if the space is too small, under the strong extrusion, part of the slag particles will be extruded together with the juice through the filter screen. Although the juice is added, the quality of the juice is relatively low. The size of the space should depend on the detailed process requirements of users.