Cathode rubber gasket for membrane polar distance ionic membrane electrolytic bath with installation limit structure

Abstract

The invention relates to a cathode rubber gasket for a membrane polar distance ionic membrane electrolytic bath with an installation limit structure, in particular to a rectangular frame rubber gasket, which is characterized in that the cathode rubber gasket is provided with a side which is the bath frame surface matched with a cathode bath frame; a descending step is arranged on the bath frame surface and along the circumferential bath frame surface in the bath frame surface; the lower folding surface of the descending steps is perpendicular to the step surface; sealing lines with a trapezoidal cross section are uniformly distributed on the residual part of the bath frame surface of the cathode rubber gasket; the cathode rubber gasket is provided with the descending step or a groove matched with the convex table of the membrane polar distance bath frame; the descending step or the groove can be taken as an installation positioning part; the descending step or the groove is buckled onthe convex table of the membrane polar distance bath frame when the installation positioning part is flatly laid on the bath frame, so that the bath frame surface is easily laid on the cathode rubbergasket; the bath frame surface of the cathode rubber gasket is not stressed by larger partial pressure after the membrane polar distance bath frame is tightly clamped, so that the sealing is reliable; and meanwhile, the internal circumference of the cathode rubber gasket is provided with a section with the same width as the internal circumference extending out of the adjacent rectangular electrolytic bath frame.

Description

technical field [0001] The invention relates to a cathode rubber gasket of a bipolar ion membrane electrolyzer, in particular to a tank frame surface where the cathode rubber gasket of a bipolar ion membrane electrolyzer is in contact with the tank frame. Background technique [0002] Ion membrane chlor-alkali electrolysis technology has the advantages of small equipment footprint, high product concentration, low energy consumption, and no pollution. It is the most advanced chlor-alkali electrolysis technology being applied and developed at home and abroad. The core part of ion-exchange membrane chlor-alkali electrolysis technology is the ion-exchange membrane electrolyzer, which consists of three parts, namely the cathode and anode tank frames, the cathode and anode rubber gaskets as seals, and the ion mold. The above-mentioned parts constitute the unit cell , and form an electrolytic device with several adjacent unit tanks under extrusion. The bipolar ion-exchange membran...

AI Technical Summary

Problems solved by technology

Since the cathode rubber gasket is of equal thickness, the cathode groove frame surface with bosses on the inner periphery will receive greater pressure on the boss than other parts of the cathode rubber gasket, and it is easy to separate the cathode rubber gasket and Connected ionic membrane is crushed

At the same time, because the cathode rubber gasket is not equipped with limit marks, it is difficult to assemble the cathode rubber gasket at the correct position extending 3 mm into the cathode frame

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