Patent ID: 11872505
Assignee: CHINA UNIVERSITY OF PETROLEUM (EAST CHINA)
Field: Chemical engineering (Chemistry)
Classification: CPC B  E | IPC B  E

Claim 5:
6. The separation device with two-stage gas-liquid mixture and conical spiral fields according to claim 1, wherein the second-stage uniform mixer is configured to perform the process of the second-stage gas-liquid crushing and uniform mixing by the uniform mixing gear; the upper uniform mixing flange is arranged on a top of the second-stage mixing pipe for sealing; two round holes are drilled in an outer edge part of the upper uniform mixing flange through which the uniform mixing flow pipe and the pressure relief pipe are passed to be communicated with a pipe cavity of the second-stage mixing pipe; the pressure relief pipe is thinner than the second-stage mixing pipe and the uniform mixing flow pipe;
inner tooth surfaces of the three-stage uniform mixing teeth of the uniform mixing gear are fixed on an outer ring surface of the impeller base pipe by circumferential welding; a cylindrical surface where outer teeth surfaces of the three-stage uniform mixing teeth are located is in interference fit with an inner wall of the second-stage mixing pipe; each layer of uniform mixing teeth of the uniform mixing gear is obliquely arranged; an upper half part of the tooth trace of each uniform mixing tooth is an inwardly concave arc line; a lower half part of the tooth trace of each uniform mixing tooth is an outwardly convex arc line; an area of a cross-section, which is vertical to the tooth trace, of each of the uniform mixing teeth is increased from zero and then continuously decreased to zero; such that the gas-liquid two-phase flow after the process of the first-stage gas-liquid crushing and uniform mixing is continuously sheared and crushed to reduced sizes of the bubbles, the bubbles are further crushed into smaller bubbles, and the gas-liquid two-phase flow is continuously reversed to form gas-liquid uniform mixing flow with the bubbles that are uniformly distributed;
the impeller base pipe is an inverted bowl-shaped pipe body with a closed upper end; an annular cavity is formed by the outer ring surface of the impeller base pipe and the inner wall of the second-stage mixing pipe; and the conical boss is arranged on a top of the impeller base pipe and attached closely to the upper uniform mixing flange.