Mono screw pump with stirring and drainage functions for reaction kettle

Abstract

The invention discloses a mono screw pump with stirring and drainage functions for a reaction kettle. The mono screw pump is vertically installed and comprises a pump seat, a lining, a screw and a screw driving component; and the mono screw pump is characterized in that the upper end part of the screw stretches out of a machine barrel, and the end part penetrating through the neck part of the reaction kettle is provided with a helical body stirring and drainage device which is coaxially connected with the screw and performs circular motion synchronously. Compared with the prior art, the mono screw pump provided by the invention has the beneficial effects that high-viscocity media at the middle part and the periphery of the reaction kettle flow into an inner barrel and a screw groove of the screw from the feed inlet of the inner barrel continuously and finally flow out of the feed outlet of the inner barrel under the action of the intense stirring and drainage of the helical body stirring and drainage device; the flow speed tends to be uniform, and the retention time in the reaction kettle also tends to be uniform, and the formation of drag flow is effectively avoided, not only can the reaction uniformity of the high-viscocity media in the reaction kettle be ensured, but also the delivery of the high-viscocity media is stable, the pressure is uniform, and the flow quantity is increased.

Description

technical field [0001] The invention relates to a single-screw pump, in particular to a single-screw pump for a reactor with the function of stirring and drainage. Background technique [0002] The single-screw pump for the reaction kettle is a vertically installed rotor type volumetric pump, including a pump base, a bush with an inner cylinder, a screw and its driving parts. The driving parts include a motor and its reduction box, coupling, and The connecting body and the bearing seat connecting the screw rod and the shaft coupling. When the screw is driven by the driving part to make a planetary rotation around the center of the barrel, the volume of the working chamber near the bushing inlet of the reactor neck gradually increases to form a positive pressure, and the high-viscosity medium is sucked under the action of the pressure difference , as the screw continues to rotate, the cross-sectional area decreases continuously, and the high-viscosity medium is pushed to the...

AI Technical Summary

Problems solved by technology

[0003] Since the existing vertically installed high-viscosity medium reactor uses a single-screw pump without a drainage structure above the bushing inlet, the high-viscosity medium in the middle of the reactor flows downward under the action of gravity at a relatively fast speed. The residence reaction time is relatively long, and the downward flow rate of the high-viscosity medium around the reactor is slower, and the residence time in the reactor is longer. The lower flow velocity is slower than that in the middle, and the reaction time in the reactor is longer, thus forming dragging flow, which not only directly affects the reaction uniformity of the high-viscosity medium in the reactor, but also part of the high-viscosity medium will be carbonized in the reactor Or degradation, resulting in unstable delivery

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