CN204964433U

CN204964433U - Immerse formula pH detection device

Info

Publication number: CN204964433U
Application number: CN201520685315.4U
Authority: CN
Inventors: 连平; 徐云生; 赵萍; 陶平德; 盛建瑞; 王永刚
Original assignee: Jinchuan Group Co Ltd
Current assignee: Jinchuan Group Co Ltd
Priority date: 2015-09-07
Filing date: 2015-09-07
Publication date: 2016-01-13
Anticipated expiration: 2025-09-07

Abstract

The utility model discloses an immerse formula pH detection device, including pH electrode, pH electrode private cable, pH display instrument, the pH electrode is established on the floater, the floater is equipped with two sliding rings by last spheroid, down spheroid combination on the floater, the sliding ring overlap on the locating lever, is equipped with the recess bottom the lower spheroid, and pH electrode seal installation is at recess top center, is equipped with ultrasonic transducer with pH electrode measuring head corresponds on the recess lateral wall, and ultrasonic transducer passes through cable junction the control unit. Beneficial effect: the self -adaptation liquid level changes, and self - cleaning pH electrode, electrode contact is all the time well surveyed liquid, prolongs the life of electrode, and the continuity of detection is strong, and the accuracy of data is high with the actual effect, device simple structure, with low costs, and the practicality is strong, and the change of specially adapted liquid level is great, the operating mode of the easy pickup of electrode.

Description

A kind of sunk pH pick-up unit

Technical field

The utility model relates to a kind of pH pick-up unit, is specifically related to the sunk pH pick-up unit of the change of a kind of self-adaptation liquid level, band automatic cleaning function.

Background technology

Existing sunk pH pick-up unit adopts electrode protection pipe electrode and stube cable to be protected, and is immersed in measured medium by electrode and measures.Major part pH electrode protection bar all adopts the flange mode that be connected supporting with the electrode protection bar of regular length, and flange is horizontally fixed in the supporting flange in reservoir top or plane, and electrode protection bar passes from the center pit of flange; Actual use in by the length of regulating flange top and the bottom electrode protection bar, then with screw by protection tube and flange fastening, thus determine the actual sinkage of electrode.Because in reservoir, liquid level constantly changes with technique, but the sinkage of electrode is constant, and often occur that electrode contact is less than the exposed dry phenomenon of putting of liquid level, not only electrode is fragile, and the life-span is short, and cannot carry out continuous coverage.Detection medium adhesions different is in addition different, particularly the high viscosity corrosive liquids of complicated ions system, very easily pollutes and adheres to sensor probe, and under the state of continuous coverage, accuracy of detection declines gradually, cause pH to detect inaccurate, need to carry out frequent clean to pH electrode; Often by manually being taken out by electrode in actual production, manually with hairbrush cleaning probe, will cause pH value distortion in flushing process, occur the uncontinuity detected, the accuracy of data and actual effect far can not meet the requirement of production technology.

Utility model content

The purpose of this utility model is exactly for above technology Problems existing, provides the change of a kind of electrode self-adaptation liquid level, and the sunk pH pick-up unit of band automatic cleaning function, realizes the continuous coverage of pH, improves the accuracy detected.

The technical solution of the utility model is: a kind of sunk pH pick-up unit, comprise pH electrode, pH electrode private cable, pH display instrument, described pH electrode is located on ball float, described ball float is combined by upper sphere, lower sphere, ball float is provided with two slip rings, slip ring sleeve on the securing lever, groove is provided with bottom lower sphere, the sealing of pH electrode is arranged on groove top central authorities, correspondingly with pH electrode measurement head in recess sidewall be provided with ultrasonic transducer, ultrasonic transducer is by ultrasonic wave transducer cable connection control unit.

Described upper sphere is provided with terminal box, and terminal box is connected to upper junction box by elastic telescopic Cable protecting tube, and the pH electrode private cable connecting pH electrode is connected pH display instrument through terminal box, elastic telescopic Cable protecting tube with upper junction box.

Described upper sphere is provided with terminal box, and terminal box is connected to upper junction box by elastic telescopic Cable protecting tube, and ultrasonic wave transducer cable is connected with control module with upper junction box through terminal box, elastic telescopic Cable protecting tube.Described control module comprises ultrasonic signal generator, controller and auxiliary reclay, and ultrasonic signal generator controls power supply by auxiliary reclay KA1, and ultrasonic signal generator is by the signal of auxiliary reclay KA2 and KA3 control output end.

Between upper sphere and lower sphere, contact position establishes O shape cushion rubber to seal, and upper sphere and lower sphere are by screw fastening.

Described slip ring is two symmetrical settings.

Described ultrasonic transducer has two, symmetrical setting.

The beneficial effects of the utility model: self-adaptation liquid level changes, automatic cleaning pH electrode, electrode contacts test solution all the time well, extend the serviceable life of electrode, the continuity detected is strong, and accuracy and the actual effect of data are high, and apparatus structure is simple, cost is low, practical, be specially adapted to that liquid level changes greatly, the operating mode of the easy pickup of electrode.

Accompanying drawing explanation

Fig. 1: structure principle chart of the present utility model;

Fig. 2: ball float cut-open view;

Fig. 3: lower sphere upward view;

Fig. 4: upper sphere vertical view;

Fig. 5: upper junction box terminal figure;

Reference numeral implication: 1, upper junction box; 2, backstay; 3, ultrasonic signal generator; 4, elastic telescopic Cable protecting tube; 5, terminal box; 6, upper sphere; 7, screw; 8, slip ring; 9, lower sphere; 10, ultrasonic transducer; 11, pH electrode; 12, controller; 13, connection terminal; 14, O type cushion rubber; 15, pH electrode private cable; 16, ultrasonic wave transducer cable.

Embodiment

(spheroid material requires waterproof to utilize the materials such as ABS ellipse (or standard ball) hollow ball to do ball float, corrosion-resistant), ball float is divided into upper and lower two parts, the groove top central authorities being arranged on lower sphere 9 are sealed according to the installation sealing means of pH electrode 11, in recess sidewall just to the measuring head fixed installation ultrasonic transducer 10 of pH electrode 11, pH electrode private cable 15 and ultrasonic wave transducer cable 16(four-core shielded cable) receive the terminal box 5 at ball float top, terminal box 5 is connected to upper and lower two junctions of upper junction box 1(by elastic telescopic Cable protecting tube 4 must be firmly, and perform encapsulation process), pH electrode private cable 15 and ultrasonic wave transducer cable 16 are by terminal box 5, elastic telescopic Cable protecting tube 4, pH display instrument and ultrasound wave control module is connected respectively after upper junction box 1.

Upper sphere 6 and lower sphere 9 are connected with screw 7 and are fastened to one piece, and contact position realizes sealing by O type cushion rubber 14 therebetween, prevents fluid to be measured from entering in ball float.The slip ring 8 of ball float both sides is enclosed within two symmetrically arranged backstays 2, and when in reservoir, liquid level changes, ball float slides up and down along backstay with pH electrode 11, realizes the adaptation function of pH electrode pair liquid level.

Be provided with connection terminal 13 in upper junction box 1, ultrasonic wave transducer cable 16 is by connection terminal 13, and the normally opened contact of auxiliary reclay KA2, KA3 is connected respectively on the output terminal of ultrasonic signal generator 3, according to measured medium situation is sticked to pH electrode 11, by controller 12, regular output pH electrode 11 purge signal, the power supply control to ultrasonic signal generator 3 is realized by the normally opened contact of auxiliary reclay KA1, realize controlling the signal of ultrasonic signal generator 3 output terminal by the normally opened contact of auxiliary reclay KA2 and KA3 simultaneously, ultrasonic electrical signal is transferred to ultrasonic transducer 10 by ultrasonic wave transducer cable 16, ultrasonic transducer 10 sends ultrasound wave, ultrasound wave makes the fluid to be measured near pH electrode 11 measuring head that strong cavitation and emulsion occur in communication process, the millions of small cavitation bubble of generation per second, these bubbles produce in large quantities rapidly under acoustic pressure effect, and constantly fierce explosion, produce powerful impulsive force and negative-pressure sucking, the dirt be attached on the responsive ball bubble of pH electrode 11 is peeled off, pH electrode 11 Ultrasonic Cleaning can be realized.Scavenging period, cycle and cleaned by single or two ultrasonic transducers, control by controller, thus realize the on-line auto-cleaning function of pH electrode.

Claims

1. a sunk pH pick-up unit, comprise pH electrode (11), pH electrode private cable (15), pH display instrument, it is characterized in that: described pH electrode (11) is located on ball float, described ball float is by upper sphere (6), lower sphere (9) combines, ball float is provided with two slip rings (8), slip ring (8) is enclosed within backstay (2), lower sphere (9) bottom is provided with groove, pH electrode (11) sealing is arranged on groove top central authorities, correspondingly with pH electrode (11) measuring head in recess sidewall be provided with ultrasonic transducer (10), ultrasonic transducer (10) is by ultrasonic wave transducer cable (16) connection control unit.

2. sunk pH pick-up unit according to claim 1; it is characterized in that: described upper sphere (6) is provided with terminal box (5); terminal box (5) is connected to upper junction box (1) by elastic telescopic Cable protecting tube (4), and the pH electrode private cable (15) connecting pH electrode (11) is connected pH display instrument through terminal box (5), elastic telescopic Cable protecting tube (4) with upper junction box (1).

3. sunk pH pick-up unit according to claim 1; it is characterized in that: described upper sphere (6) is provided with terminal box (5); terminal box (5) is connected to upper junction box (1) by elastic telescopic Cable protecting tube (4), and ultrasonic wave transducer cable (16) is connected with control module with upper junction box (1) through terminal box (5), elastic telescopic Cable protecting tube (4).

4. sunk pH pick-up unit according to claim 3, it is characterized in that: described control module comprises ultrasonic signal generator (3), controller (12), ultrasonic signal generator (3) controls power supply by auxiliary reclay KA1, and ultrasonic signal generator (3) is by the signal of auxiliary reclay KA2 and KA3 control output end.

5. sunk pH pick-up unit according to claim 1, is characterized in that: between upper sphere (6) and lower sphere (9), O shape cushion rubber (14) is established in contact position, and upper sphere (6) is fastening by screw (7) with lower sphere (9).

6. sunk pH pick-up unit according to claim 1, is characterized in that: described slip ring (8) is two symmetrical settings.

7. sunk pH pick-up unit according to claim 1, is characterized in that: described ultrasonic transducer (10) has two, symmetrical setting.