Countercurrent extraction and drainage device

Abstract

A countercurrent extraction drainage device is disclosed. The countercurrent extraction drainage device comprises an extraction pipe; the extraction pipe is provided with a striker plate; the countercurrent extraction drainage device is characterized in that the striker plate is arranged perpendicularly to the central axis of the extraction pipe; the whole outer circumference of the striker plate and the inner wall of the extraction pipe are in sealed connection; the extraction pipe is divided into an independent drainage pipe section and an extraction pipe section by the striker plate; an overflow pipe is arranged in the drainage pipe section; the overflow pipe comprises an overflow pipe liquid inlet and an overflow pipe liquid outlet; the extraction pipe section is communicated with the drainage pipe section through the overflow pipe; an extraction liquid inflow opening is formed in the striker plate; the overflow pipe liquid inlet is butted with the extraction liquid inflow opening; the overflow pipe liquid outlet is higher than the overflow pipe liquid inlet. The extraction liquid in the extraction pipe section flows into the extraction liquid inflow opening; then the extraction liquid flows through the overflow pipe to overflow into a screen cloth barrel from the overflow pipe liquid outlet; large-size particles are filtered and retained; then the liquid flows into the drainage pipe section; finally, the liquid is discharged from an extraction liquid exhaust port positioned at the lower part of the drainage pipe section.

Description

technical field [0001] The invention relates to a liquid discharge device, in particular to a liquid discharge device on a liquid medium to solid material countercurrent extraction equipment. Background technique [0002] In the prior art, the technology closest to the present invention is the patent "A liquid discharge device for extraction tube" (Patent No. 200810238617.1) invented by the inventor, which includes an extraction tube and a propulsion shaft and a fixed The helical propeller composed of helical blades on the propulsion shaft has a feed pipe at one end of the extraction pipe, and there is a liquid outlet pipe on the top of the extraction pipe between the side end of the extraction pipe and the feed pipe. A material baffle is fixed on the upper part of the cavity and between the liquid outlet pipe and the feed pipe, and the material baffle is located at the end of the spiral blade. Since the material baffle is located at the upper part of the inner cavity of th...

AI Technical Summary

Problems solved by technology

The present invention also provides a countercurrent extraction and drainage device that solves the problem of leakage of extraction liquid from the mechanical seal of the propeller shaft

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