CN201307099Y - Automatically detecting device for pH glass electrode - Google Patents
Automatically detecting device for pH glass electrode Download PDFInfo
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- CN201307099Y CN201307099Y CNU2008201136013U CN200820113601U CN201307099Y CN 201307099 Y CN201307099 Y CN 201307099Y CN U2008201136013 U CNU2008201136013 U CN U2008201136013U CN 200820113601 U CN200820113601 U CN 200820113601U CN 201307099 Y CN201307099 Y CN 201307099Y
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Abstract
The utility model relates to an automatically detecting device for a pH glass electrode, which comprises an electrode, a motor, an electrode lifting system, a measuring control system, an up-down limit hall switch, a sample measuring chamber and an electrode cleaning system. The electrode is arranged at the lower end of a guide rod; the upper end of the guide rod is provided with an electrode lead connected with the measuring control system; the motor is connected with the electrode lifting system through a transmission mechanism; a reverse Y-shaped groove of a turning spiral groove is movably matched with a turning pin on a connecting arm; the lower end of a control rod is provided with a liquid blocking plate; a slide groove for the electrode to move upwards and downwards is arranged below the turning spiral groove, and the slide groove can avoid electrode damage resulted from that the electrode collides with the liquid blocking plate and a liquid spraying opening during movement; the liquid blocking plate is fixed on the lower part of the slide groove, which better protects the electrode; and the electrode cleaning system is arranged at the lower part of the detecting device and is formed by a cleaning-liquid storing tank, a liquid transfer pump and a liquid spraying mouth, so the electrode cleaning system can carry out automatic control.
Description
Technical field
The utility model relates to a kind of instrument of measuring acidity, particularly adopts glass electrode to detect the instrument of pH value of solution value.
Technical background
PH value to raw material and product detects and controls, it is chemical industry, light industry, food, the important control parameter of industries such as environmental protection, and be a kind of method comparatively accurately with the pH value that glass electrode is measured solution, if but glass electrode is put in the medium detection time into and has been grown, impurity in the medium can form certain incrustation on glass electrode, kation gathers, cause measurement data inaccurate and unstable, thereby because of automatic control accuracy difference causes poor reliability not use, influence the whole production flow process, for a long time, people to the measurement of pH general adopt glass electrode immersed take out after solution is measured a period of time, sampling and measuring was for the second time again after water and acid were cleaned the glass electrode of acidometer then.The weak point of such way is can not continuous coverage, causes the chemical reaction can not stepless control, has influenced the production of product.The inventor improved this measuring method afterwards, and had applied for Chinese patent, application number: 00268773.9, title: two glass electrode pH value automatic detection devices, notification number: CN2469451, applicant: Qinzhou Huacheng Auto-Controlled Equipment Factory, invention (design) people: Zhu Chengkai; Chen Shaozhang; Yellow Hua Zhi, this pair glass electrode pH value detection device mainly solves the difficult problem of signal interruption when removing incrustation in pH value online automatic detection process and designs, its major technique feature is made up of A, B two arrays of electrodes, and every group of electrode is made up of magnet, last magnetic Hall switch, motor, tooth bar, pinion wheel and electrode etc. respectively.Every group of electrode all sprays acid solution with the sour mouth of spray and cleans, and blocks under the acid solution with the sour plate of retaining and leaks.The direction control lever is then controlled the direction of sour plate of retaining and nozzle, and is detected and cleaning process by hocketing mutually of computer control two arrays of electrodes.Measuring-signal is not interrupted because of cleaning incrustation, improved the stability of detection signal and the accuracy of data, the precision and the reliability of the on-line automatic control of pH value are guaranteed.2006, the inventor is for the measurement and the pickling accuracy level of the process up and down that guarantees A, B two arrays of electrodes, applied for the utility model patent of " pH value on-line automatic detection device " again, application number: 200620167793.7, notification number: CN201000445 applies for (patent right) people: Qinzhou Hua Cheng-controlled Equipment Co, invention (design) people: yellow Hua Zhi; Zhu Chengkai, this pH value on-line automatic detection device, its control arm is fixed into one to electrode guide rod and rack shaft, tooth bar, the electrode lower end of the guide rod is equipped with glass electrode, rack shaft connects tooth bar, V-structure on the tooth bar and the V-type groove that is fixed on the guide holder on the body mutually movingly, tooth bar moves up and down under the driving of motor and pinion wheel, is contained in glass electrode on the electrode guide rod also along with moving up and down.Changing direction spiral groove body is equipped with in the control lever upper end, acid bezel is equipped with in the lower end, have the break-in helicla flute on the changing direction spiral groove body, guide pin is housed on the control arm, guide pin moves up and down along with tooth bar and slides in the break-in helicla flute, make acid bezel change direction, detect or promote back in the body and clean so that glass electrode can put in the sampling groove.Such structure can make the glass electrode circulation detect and clean according to computer instruction, and it is accurate, stable to keep detecting data, for the on-line automatic control of pH value provides technique guarantee.
Through production practices in a few years, the inventor finds that also there are some problems in present glass pH electrode pick-up unit: though 1, the V-type groove that is fixed on the guide holder on the body can make the two arrays of electrodes alternatively up and down measure and clean, but electrode departs from sometimes in motion process and is located at sampled measurements chamber and electrode and cleans electrode decline hole between (pickling) chamber, directly chews with shelves liquid (acid) plate and hydrojet to bump and damage glass electrode (the thousands of units of every cover electrode price); 2, the acid solution bucket is external, needs with the longer pipe road sour pump to be connected with the pickling chamber of pick-up unit, and each operation all is careful and is checked that pipeline connects, and gives people and equipment injury in order to avoid cause acid to leak; 3, pickling chamber joint is connected with external acid solution bucket, sometimes is easy to generate Lou sour phenomenon; 4, owing to mobile coulisse structural reason, electrode is changed complicated, maintenance difficult.
Summary of the invention
Technical scheme to be solved in the utility model provides a kind of pH glass electrode automatic detection device, can overcome that pH glass electrode that above-mentioned detection device exists is damaged easily and external easy leakages of acid solution bucket is sour, electrode is easy for installation, improve reliability of operation, realize continuous on-line measurement of pH glass electrode and cleaning in time, reach the zero failure operation.
PH glass electrode automatic detection device of the present utility model comprises body, glass electrode, motor, the rise fall of electrodes system, Measurement and Control System, spacing up and down Hall switch, sampled measurements chamber and electrode purge chamber, electrode is installed in lower end of the guide rod, the guide rod upper end has contact conductor to pick out to Measurement and Control System, motor is by gear train connection electrode elevating mechanism, electrode lifting mechanism comprises guide holder, control arm, rack shaft and tooth bar, guide holder is fixed on the body, the chevron shaped groove of changing direction spiral groove body cooperates with the break-in pin on the linking arm is interactive, liquid baffle board is equipped with in the control lever lower end, is characterized in:
(1) below of changing direction spiral groove body is provided with and prevents that electrode from chewing with liquid barrier and hydrojet bump and damage the coulisse that the electrode of electrode moves up and down in motion process, move up and down at electrode and to play the guide rail effect in the process, liquid baffle board is fixed on electrode and moves up and down the coulisse bottom;
(2) bottom of body is fixed with the electrode purging system that can control automatically.
(3) the sampled measurements chamber is provided with sample liquid inlet and outlet of sample liquid and cleaning fluid refluxing opening, and sample collection interchanger location-plate is fixed on measuring chamber on the body, and the sample liquid inlet and the outlet of sample liquid of measuring chamber are received respectively on the container or pipeline of testing medium.
Above-described electrode purging system comprises cleaning fluid storage tank, infusion pump, spray nozzle, draining plate and liquid reversal valve, cleaning fluid storage tank and body are made of one, the electrode purge chamber has the cleaning fluid refluxing opening to lead to the cleaning fluid storage tank, the cleaning fluid storage tank is provided with transparent window or liquid level gauge, can observe the liquid level of cleaning fluid, infusion pump is installed on the cleaning fluid storage tank, the transfusion pump intake piping is in cleaning fluid storage tank bottom, the outlet of infusion pump is received the body reversal valve, reversal valve and draining plate are made of one, spray nozzle and liquid barrier are made of one, and draining plate is communicated with liquid barrier.
Above-described Measurement and Control System can be carried out Automatic Control to rise fall of electrodes system and electrode purging system, that is to say, when passing through control lever and guide rod and drop to measuring chamber and measure in the pH electrode, can make electrode enter the cleaning state by Measurement and Control System instruction control bar and guide rod after finishing, reenter the measurement state after cleaning finishes.
Above-described Measurement and Control System is by signal receiving circuit, analyze comparator circuit, processor (single-chip microcomputer or micro computer), display and control signal output circuit constitute, glass electrode and spacing up and down Hall switch insert signal receiving circuit in the Measurement and Control System with measuring-signal, signal receiving circuit is received and is analyzed comparator circuit and processor, measured value is shown and controls, output to the topworks of rise fall of electrodes system and electrode purging system and production technology by the control signal output circuit, the technological operation worker just can understand the index of production run and the corresponding control operation that liquid is taked at any time like this.
Compare with existing " pH value on-line automatic detection device " patent, outstanding substantive distinguishing features and the obvious improvement of the utility model is:
1, the past is because rise fall of electrodes system misoperation or human factor (not noting when the operative employee starts shooting); electrode is easy to chew the damage that bumps with liquid barrier and hydrojet in the decline process; the utility model prevents that electrode from chewing with liquid barrier and hydrojet and bumps and damage the spacing frid of electrode being provided with below the changing direction spiral groove body in motion process; liquid baffle board also is fixed on spacing frid bottom, has protected electrode better.
2, the cleaning fluid of the electrode purging system in past is placed on the outside separately, needing will to clean liquid pump with the longer pipe road is connected with the purge chamber of pick-up unit, when using acid as cleaning fluid, pipeline connects and causes when bad acid to leak easily to give people and equipment injury, the utility model is made of one cleaning fluid storage tank and body, the electrode purging system just can be controlled fully automatically, and increasing the liquid reversal valve is T-valve or four-way valve, the liquid reversal valve is connected nozzle when cleaning glass electrode, when the cleaning fluid acid concentration reduces, when not reaching cleaning performance, by control device instruction liquid reversal valve the cleaning fluid that lost efficacy is got rid of, replenished new cleaning fluid then and enter the cleaning fluid storage tank.
3, the automatic control degree of total system operation has had further lifting, peace and quiet with the sugar juice decoloring in sugar refinery is example, glass pH electrode full-automatic detection apparatus of the present utility model is applied to the topworks that syrup pH measured and controlled stove drying or adds ash, can very exactly syrup pH be controlled between 1-3%, improve the controlling level and the product quality in sugar refinery.
Description of drawings
Fig. 1 is a pH glass electrode automatic detection device general assembly drawing of the present utility model.
Fig. 2 is rise fall of electrodes system decomposition figure (electrode descends and measures).
Fig. 3 is rise fall of electrodes system decomposition figure (electrode rises and cleans).
Embodiment
As shown in the figure, pH glass electrode automatic detection device of the present utility model comprises potential electrode 06, motor 28, the rise fall of electrodes system, Measurement and Control System, measuring chamber 05, upper limit Hall switch 23 and lower limit Hall switch 25, upper limit Hall switch 23 is installed on the upper mounted plate 24, lower limit Hall switch 25 is installed on the bottom plate 26, spacing set screw 17 is adjusted the position of Hall switch, the lead of Hall switch picks out to Measurement and Control System by fastening clip for cable 27, electrode 06 is installed in the lower end of electrode guide rod 10, there is electrode fixed cap 15 upper end of electrode guide rod 10, contact conductor also picks out to Measurement and Control System by fastening clip for cable 27 from electrode fixed cap 15, electrode lifting mechanism comprises guide holder 12, linking arm 14, gear 13 and tooth bar 30, motor 28 is by the gear 13 and the tooth bar 30 of rise fall of electrodes system, linking arm 14 make electrode guide rod 16 up and down drive electrode 06 move and measure, motor shroud 29 is arranged on the motor 28; Guide holder 12 and tooth bar 30 are mutually movingly, guide holder 12 is fixed on the body, guide holder 12 cooperates with tooth bar 30, break-in pin 43 on the linking arm 14 moves up and down chute 18 with electrode, break-in helicla flute 20 on the changing direction spiral groove body 19 mutually movingly, coulisse 16 has break-in helicla flute 20 (skewed slot), (see figure 2), below changing direction spiral groove body 12, be provided with and prevent that electrode from chewing with liquid barrier 6 and hydrojet bump and damage the coulisse 16 of electrode in motion process, move up and down at electrode 06 and to play the guide rail effect in the process, waterproof cover 21 is arranged at body 32 tops, and body 32 back are equipped with a grade liquid glass 11.The effect of push rod 44 is to prevent from that electrode guide rod 16 from rising to surpass the top and damage.
Electrode purging system of the present utility model is by the cleaning fluid storage tank 01 that is installed in bottom, sampled measurements chamber, infusion pump 37, hydrojet chews 31, drain upper plate 34, leakage fluid dram 38 and liquid reversal valve 33 constitute, cleaning fluid storage tank 01 is made of one with body 32, the electrode purge chamber has cleaning fluid refluxing opening 04 to lead to cleaning fluid storage tank 01, cleaning fluid storage tank 01 is provided with transparent window 40 or liquid level gauge, can observe the liquid level of cleaning fluid, infusion pump 37 is installed on the body 32, the inlet tube 42 of infusion pump 37 is in the bottom of cleaning fluid storage tank 01, inlet 41 is provided with drill holder 39, liquid reversal valve 33 is received in the outlet 35 of infusion pump 37, liquid reversal valve 33 connects hydrojet and chews 31, and hydrojet is chewed 31 and is made of one with liquid barrier 08.Cleaning fluid storage tank 01 comprises draining plate 34, and the cleaning fluid of the inefficacy behind the cleaning fluid cleaning electrode flows out from leakage fluid dram 38.
Liquid reversal valve 33 is a T-valve, and passage connects hydrojet and chews 31, one passages and connect 01, the three passage of cleaning fluid storage tank at draining plate 34 ends.The liquid reversal valve is connected hydrojet and is chewed 31 when cleaning glass electrode, when the cleaning fluid acid concentration reduces, when not reaching cleaning performance, get rid of from liquid draining plate 34 ends by the cleaning that control device instruction liquid reversal valve 33 will lose efficacy, replenish new cleaning fluids from filling opening 36 then and enter cleaning fluid storage tank 01.
The surveying work process and the principle of double-glass pH electrode continuous detection apparatus of the present utility model are as follows:
Tested fluid enters measuring chamber 05 from sample liquid inlet 02, and electrode 06 puts in the measuring chamber 05 from sample measurement mouth 07 and detects, and collects data-signal and is sent to computer by cable and handle.After detection finishes, electrode 06 drives motor gear 13 by motor 28 and tooth bar 30 rises to predetermined height, the sensor of stop means is pressed close to upper limit Hall switch, signal is passed to the computer of pulpit by lead, also drive electrode purging system electrode guide rod 16 in tooth bar 30 uphill process and turn an angle, make and hydrojet is chewed 31 pairs of positive electrodes 06.Computer instruction infusion pump 37 starts then, and the cleaning fluid with certain pressure is chewed 31 from hydrojet and ejected electrode 06 is cleaned (see figure 3).Cleaning fluid after the injection flows back to cleaning fluid storage tank 01 by cleaning fluid refluxing opening 04.In order to prevent that liquid liquid from leaking, the electrode purge chamber fences up with cloche.After time, computer instruction motor 28 starts through preset detection, and motor gear 13 and tooth bar 30 move down guide rod 16.Electrode 06 is just measured mouth 07 from sample and is put in measuring chamber 05.After dropping to predetermined altitude, the sensor of stop means is pressed close to limit switch, and motor just stops operating after receiving signal, and electrode begins to enter the detection-phase of awaiting orders.
Be to guarantee that electrode 06 among the figure departs from liquid barrier 08 and makes hydrojet chew 31 to be in the middle when electrode is height-rise or high-fall, prevent that electrode 06 from bumping with liquid barrier 08 and damage electrode in motion process.Break-in pin 43 has limited the rotation of electrode 06 slide down frid 16, guarantees electrode safety.
Claims (4)
1, a kind of pH glass electrode automatic detection device, comprise body, glass electrode, motor, the rise fall of electrodes system, Measurement and Control System, spacing up and down Hall switch, sampled measurements chamber and electrode purging system, electrode is installed in lower end of the guide rod, the guide rod upper end has contact conductor to pick out to Measurement and Control System, motor is by gear train connection electrode elevating mechanism, electrode lifting mechanism comprises guide holder, control arm, rack shaft and tooth bar, guide holder is fixed on the body, the chevron shaped groove of changing direction spiral groove body cooperates with the break-in pin on the linking arm is interactive, liquid baffle board is equipped with in the control lever lower end, the electrode purging system comprises nozzle and cleaning fluid conveying pipeline, it is characterized in that:
1. the below of changing direction spiral groove body (19) is provided with and prevents that electrode from chewing (31) with liquid barrier (08) and hydrojet and bumping and damage the coulisse (16) that the electrode of electrode moves up and down in motion process;
2. the bottom of body (32) is fixed with the electrode purging system that can control automatically.
3. sampled measurements chamber (05) is provided with sample liquid inlet (02) and the outlet of sample liquid (09) and cleaning fluid refluxing opening (04), sample collection interchanger location-plate (03) is fixed on measuring chamber (05) on the body (32), and the sample liquid of measuring chamber (05) inlet (02) and sample liquid outlet (09) are received respectively on the container or pipeline of testing medium.
2, pH glass electrode automatic detection device according to claim 1, it is characterized in that: the electrode purging system comprises cleaning fluid storage tank (01), infusion pump (33), spray nozzle (31), draining plate (34) and liquid reversal valve (33), cleaning fluid storage tank (01) is made of one with body (32), the electrode purge chamber has the cleaning fluid refluxing opening to lead to the cleaning fluid storage tank, the cleaning fluid storage tank is provided with transparent window or liquid level gauge, infusion pump (33) is installed on the cleaning fluid storage tank (01), the inlet tube of infusion pump (33) is in cleaning fluid storage tank (01) bottom, the outlet of infusion pump (33) is received body reversal valve (33), reversal valve (33) and draining plate (34) are made of one, spray nozzle (31) is made of one with liquid barrier (08), and draining plate (34) is communicated with liquid barrier (08).
3, pH glass electrode automatic detection device according to claim 1, it is characterized in that: described liquid reversal valve (34) is a T-valve, passage of T-valve connects spray nozzle (31), and a passage connects cleaning fluid storage tank (01), and the 3rd passage is at the end of liquid draining plate (34).
4, pH glass electrode automatic detection device according to claim 1, it is characterized in that: described Measurement and Control System is by signal receiving circuit, analyze comparator circuit, processor, display and control signal output circuit constitute, two glass electrodes and spacing up and down Hall switch insert signal receiving circuit in the Measurement and Control System with measuring-signal, signal receiving circuit is received and is analyzed comparator circuit and processor, measured value is shown and controls, output to the topworks of rise fall of electrodes system and electrode purging system and production technology by the control signal output circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201136013U CN201307099Y (en) | 2008-11-28 | 2008-11-28 | Automatically detecting device for pH glass electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201136013U CN201307099Y (en) | 2008-11-28 | 2008-11-28 | Automatically detecting device for pH glass electrode |
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| Publication Number | Publication Date |
|---|---|
| CN201307099Y true CN201307099Y (en) | 2009-09-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU2008201136013U Expired - Fee Related CN201307099Y (en) | 2008-11-28 | 2008-11-28 | Automatically detecting device for pH glass electrode |
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| CN (1) | CN201307099Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102507700A (en) * | 2011-10-25 | 2012-06-20 | 钦州华成自控设备有限公司 | Direct insertion type pH value detector |
| CN102967640A (en) * | 2012-11-14 | 2013-03-13 | 钦州华成自控设备有限公司 | Single electrode detection device for floating separation |
-
2008
- 2008-11-28 CN CNU2008201136013U patent/CN201307099Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102507700A (en) * | 2011-10-25 | 2012-06-20 | 钦州华成自控设备有限公司 | Direct insertion type pH value detector |
| CN102507700B (en) * | 2011-10-25 | 2014-07-16 | 钦州华成自控设备有限公司 | Direct insertion type pH value detector |
| CN102967640A (en) * | 2012-11-14 | 2013-03-13 | 钦州华成自控设备有限公司 | Single electrode detection device for floating separation |
| CN102967640B (en) * | 2012-11-14 | 2014-04-09 | 钦州华成自控设备有限公司 | Single electrode detection device for floating separation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090909 Termination date: 20161128 |