A kind of preparation method of rubber-lined screw

Abstract

The invention relates to a preparation method of a rubber lining screw rod. The method adopts a rubber lining method of injecting rubber at the end part and exhausting in middle, so that the rubber injecting difficulty is reduced; a filter device is arranged in an exhaust port for allowing passing and exhausting of gas; a compact filter film can prevent outward flowing of rubber, so that the rubber waste caused by outward flowing of the rubber can be prevented, the pressure in a screw rod mold can be increased or stabilized, the bonding capacity of the rubber to the screw rod is enhanced, and the rubber lining quality is improved; and meanwhile, the screw rod is not stationary in the rubber lining process, but keeps rotating at low speed, so that a pressure forward surface and a pressure back surface of the screw rod can be continuously alternated to guarantee continuous balance and uniformity of pressure suffered by each part of the screw rod, and a fluid in a channel generates uniform extruding force on the screw rod to uniformly coat the rubber on the surface of the screw rod so as to enhance the wear resistance of the rubber lining screw rod.

Description

technical field [0001] The invention relates to the technical field of screw pumps, in particular to a method for preparing a rubber-lined screw. Background technique [0002] The three-screw pump has received more and more attention due to its advantages such as reasonable structure, energy saving and environmental protection, no unilateral wear of the screw rotor, few leakage points, low leakage, effective reduction of the impact of oil pollution on the environment, and remarkable power saving effect. In recent years, it has shown good development prospects and played an important role in pillar industries such as petroleum, chemical industry, metallurgy, electric power, shipbuilding, and environmental protection. [0003] The screw pump works by the rotating movement of the screws that mesh with each other. During the rotation of the screws, the material will have a certain friction with the screw and the inner wall of the pump, so that the working surface between the scr...

AI Technical Summary

Problems solved by technology

However, after long-term practice, the inventors found that the pressure in the mold channel is difficult to increase due to the continuous exhausting of the exhaust port in the middle of the mold during the rubber lining process, and the pressures on the various parts of the screw are not the same. The screw surface facing the flow direction of the colloid is under greater pressure, while the screw surface facing away from the colloid flow is under less pressure. The existence of the pressure difference leads to different adhesion of the colloid on the surface of the screw, and there is still the problem of uneven lining

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