Improved double-glass pH electrode fully automatic detection device

Abstract

The invention discloses a double-glass pH electrode fully automatic detection device. The device comprises a group A of glass electrodes, a group B of glass electrodes, a motor, an electrode lifting system, a measurement control system, an upper limit hall switch, a lower limit hall switch and an electrode cleaning system, wherein the electrodes are arranged at the lower end of an electrode container; the upper end of the electrode container is provided with an electrode lead which is connected to the measurement control system; the motor is connected with an electrode lifting mechanism through a transmission mechanism; the electrode lifting mechanism comprises a guide seat, a connecting arm, a rack shaft and a rack; and the guide seat is fixed on a body. The device is characterized in that: (1) a container pressing hand wheel for guaranteeing non-displacement of the electrodes and a wire is arranged above the electrode container; (2) a chute plate below a deflecting spiral chute bodyis modified, and the original single-chute structure is changed into a double-chute structure; (3) the electrode container is provided with an acid shielding cover, and the lower part of the electrode is provided with a positioning ring which prevents the electrodes from swinging left and right as well as up and down along with the movement of the electrode container, seals an electrode head and keeps the electrode head dry for a long time; and (4) the upper part of acid shielding glass is provided with a fixing plate which is fastened by a positioning pin.

Description

technical field [0001] The invention relates to an instrument for measuring acidity, in particular to an instrument for detecting the pH of a solution by using a glass electrode. technical background [0002] The dual-glass electrode pH value automatic detection device is a product produced by Qinzhou Huacheng Automatic Control Equipment Factory located in Guangxi Zhuang Autonomous Region in southern China. It is specially designed to solve the problem of signal interruption during the online automatic detection of pH value in sugar factories. And design, its main technical feature is composed of A, B two groups of electrodes, each group of electrodes is composed of magnets, upper and lower magnetic Hall switches, motors, racks, pinions and electrodes, etc., each group of electrodes are used acid nozzle The acid liquid is sprayed for cleaning, and the acid blocking plate is used to block the leakage of the acid liquid, while the direction control rod controls the direction o...

AI Technical Summary

Problems solved by technology

[0006] After several years of production practice, the inventors have found that there are still some problems in the current double glass pH electrode detection device: 1. The bottom of the direction-changing spiral groove body is provided with an electrode that prevents contact with the liquid baffle plate and the liquid spray nozzle during the movement process. The design of the limiting slot plate that damages the electrode due to collision is unreasonable, and the electrodes of A and B groups cannot be taken care of at the same time. The situation that the liquid shield collides with the electrode and damages the glass electrode also occurs from time to time; 2. The upper structure of the electrode cylinder is unreasonable, and the electrodes The wires at the upper end of the cylinder are fixed with screws, which are easy to break due to frequent up and down movement, and are difficult to replace, especially when the upper and lower limit Hall switches are used for a long time and the sensitivity decreases, the measurement data will have errors

3. There is a glass cover in the pickling room, which is not closely connected with the upper part of the electrode cylinder, and sometimes it is easy to cause acid leakage and harm the operator.

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