An 8-shaped sealed meshing pair screw pump for large flow fluid medium transportation

Abstract

The purpose of the present invention is to provide an 8-shaped sealed meshing secondary screw pump for large-flow fluid medium transportation, which can transport the sludge fluid medium containing many impurities, and the sealing disc is designed as 8-shaped, with large displacement and small curvature change of the meshing section , can continuously and smoothly transport sludge fluid medium containing various impurities, including hydraulic motor, connecting frame, casing, screw rotor and coupling, one end of the connecting frame is connected with the casing to form the outer casing of the screw pump , the screw rotor is located inside the outer casing, the output end of the hydraulic motor is connected with the screw rotor through a coupling, the other end of the connecting frame is connected with the hydraulic motor, and the screw rotor is located in the casing There are 8-shaped sealing discs arranged symmetrically on both sides, and the 8-shaped sealing discs form an engagement pair with the helical groove of the booster section, so that when the hydraulic motor drives the screw rotor to rotate, the 8-shaped sealing discs are driven to rotate around the fixed shaft.

Description

technical field [0001] The invention belongs to the technical field of positive displacement pump equipment, and in particular relates to an 8-shaped sealing and meshing secondary screw pump for large-flow fluid medium transportation. Background technique [0002] In recent years, the continuous improvement of the level of science and technology has promoted the continuous growth of people's demand for oil, which has also led to the rapid development of my country's oil industry. In the process of petroleum processing and production, a large amount of sludge will be formed [1] According to statistics from the China Materials Research Association: In 2015, my country produced 32,500 tons of sludge. Sludge is a pollutant produced in various stages of petroleum processing. The composition is extremely complex. It contains more than 10% oil, more than 40% water and a large amount of toxic substances. Once discharged into the environment, it will affect the air and soil in the e...

AI Technical Summary

Problems solved by technology

However, during the entire working process of the pump body, only part of the meshing area between the sealing disc and the screw rotor is the working area of ​​the pumped fluid, and the other part of the meshing area is the return area. low utilization

Moreover, this meshing feature prevents the two sealing discs from being driven to rotate by the screw rotor. In order to meet the periodic motion relationship, an additional auxiliary connection device is required between the two sealing discs, resulting in a complex structure of the screw pump, which is bulky and heavy. The impurity medium has poor adaptability, and the existence of auxiliary connection devices also greatly reduces the reliability and efficiency of the screw pump operation

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