CN102103120B - Improved double-glass pH electrode fully automatic detection device - Google Patents
Improved double-glass pH electrode fully automatic detection device Download PDFInfo
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- CN102103120B CN102103120B CN 201010602017 CN201010602017A CN102103120B CN 102103120 B CN102103120 B CN 102103120B CN 201010602017 CN201010602017 CN 201010602017 CN 201010602017 A CN201010602017 A CN 201010602017A CN 102103120 B CN102103120 B CN 102103120B
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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 body is 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
The present invention relates to a kind of instrument of measuring acidity, particularly adopt glass electrode to detect the instrument of pH value of solution.
Technical background
two glass electrode pH value automatic detection devices are to be located in the product that the Qinzhou Huacheng Auto-Controlled Equipment Factory of southern china Guangxi Zhuang Autonomous Region produces, design for a difficult problem that solves sugar refinery signal interruption when carrying out Scale Removal in pH value online automatic detection process specially, its technical characteristics is by A, the B two arrays of electrodes forms, every group of electrode is respectively by magnet, upper magnetic Hall switch, motor, tooth bar, the composition such as pinion wheel and electrode, every group of electrode all sprays acid solution with the sour mouth of spray and cleans, block under acid solution with the sour plate of gear and leak, the direction control lever is controlled the direction of the sour plate of gear and nozzle, and control mutually hocketing of two arrays of electrodes by computer and detect and cleaning process, measuring-signal is not interrupted because cleaning incrustation, the stability of detection signal and the accuracy of data have been improved, precision and the reliability of the on-line automatic control of pH value are guaranteed.Two glass electrode pH value automatic detection devices in first to file have:
1, Chinese patent, notification number: CN2469451, title: two glass electrode pH value automatic detection devices, 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 tooth bar and the V-type groove that is fixed on the guide holder on 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 changing direction spiral groove body, guide pin is housed on 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 body and clean so that glass electrode can put in the sampling groove.Such structure can loop glass electrode according to computer instruction and detect and clean, and keeps detecting data accurate, stable, for the on-line automatic control of pH value provides technique guarantee.
2, Chinese patent, notification number: CN201000445, title: 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, and rack shaft connects tooth bar, and the V-structure on tooth bar and the V-type groove that is fixed on the guide holder on body are 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 changing direction spiral groove body, guide pin is housed on 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 body and clean so that glass electrode can put in the sampling groove.Such structure can loop glass electrode according to computer instruction and detect and clean, and keeps detecting data accurate, stable, for the on-line automatic control of pH value provides technique guarantee.
3, Chinese patent, open (bulletin) number: CN101413916, title: full-automatic detection device of double-glass pH electrode, a kind of full-automatic detection device of double-glass pH electrode, comprise two groups of glass electrodes, motor, rise fall of electrodes system, Measurement and Control System, the spacing Hall switch in up and down, sampled measurements chamber and electrode clean system, improved structure is that the below of 1. changing direction spiral groove body is provided with and prevents that electrode from chewing with liquid barrier and hydrojet bump and damage the spacing frid (24) of electrode in motion process; 2. the bottom of body is fixed with the electrode clean system that can automatically control; 3. the sampled measurements chamber of electrode below is placed in the side of cleaning fluid storage tank, and measuring chamber is provided with inlet/outlet pipe, receives respectively on the container or pipeline of testing medium.
Through production practices in a few years, the inventor finds that also there are some problems in present double-glass pH electrode pick-up unit: 1, the below of changing direction spiral groove body is provided with prevents that electrode from chewing with liquid barrier and hydrojet and bumps and to damage the spacing frid design of electrode unreasonable in motion process, A, B two arrays of electrodes can not be taken into account, and liquid baffle board and electrode bump and the situation of damaging glass electrode also occurs frequently; 2, the electrode container superstructure is unreasonable, and the wire of electrode container upper end is screwed, and owing to often moving up and down, easily fractures, and changes difficulty, and particularly the spacing Hall switch in up and down is long service time, and in the time of sensitivity, error appears in measurement data.3, the outdoor cloche of putting of pickling, not close with the electrode container upper bond, sometimes easily produces and leak acid and injury operating personnel's phenomenon.
Summary of the invention
The technical scheme that the present invention will solve is to provide a kind of double-glass pH electrode pick-up unit, the weak point such as can overcome that the pH glass electrode that above-mentioned detection device exists is easily damaged, error appears in measurement data, acid is easily leaked in the pickling chamber and wire easily fractures, improve reliability of operation, realize safe, the accurately zero failure operation of running and on-line measurement of double-glass pH electrode pick-up unit.
Double-glass pH electrode continuous detection apparatus of the present invention comprises A, two groups of glass electrodes of B, motor, rise fall of electrodes system, Measurement and Control System, the spacing Hall switch in up and down and electrode clean system, electrode is arranged on the electrode container lower end, the electrode container upper end has contact conductor to pick out to Measurement and Control System, motor is by gear train connecting electrode elevating mechanism, electrode lifting mechanism comprises guide holder, linking arm, rack shaft and tooth bar, guide holder is fixed on body, is characterized in:
1, the pressure cylinder handwheel is installed in the electrode container top, and the effect of pressure cylinder handwheel is that electrode container is compressed, and guarantees that electrode and wire are not shifted.
2, the mobile coulisse below changing direction spiral groove body is improved, become double flute by original single groove structure, A group electrode moves and uses a groove, and B group electrode moves and uses a groove.
3, install gear acid lid additional at electrode container, locating ring is installed in the electrode bottom, when preventing that electrode from move with electrode container about and swing up and down, and sealed electrical cartridge keeps electrode tip drying for a long time.
4, the sour glass of gear top mounting plate, fixed head tightens up with register pin.
Original with the inventor " two glass electrode pH value automatic detection device " compared with " pH value on-line automatic detection device " several patents, and the substantive distinguishing features that the present invention gives prominence to and significant progress are:
One, the coulisse below changing direction spiral groove body is improved, become double flute by original single groove structure, A group electrode moves and uses a groove, B group electrode moves and uses a groove, its effect is: 1, move up and down at electrode and play the guide rail effect in process, 2, can prevent that liquid barrier and hydrojet from chewing by External Force Acting on one side rotate to A group electrode direction when electrode is in the state (for example B electrode) of a side; Can prevent when electrode is in A condition that liquid barrier hydrojet in figure from chewing by External Force Acting rotates to B group electrode direction.3, height-rise at electrode or guarantee that liquid barrier and hydrojet are chewed when high-fall and all be in two electrode middles.Preventing that electrode from chewing with liquid barrier and hydrojet in motion process bumps and damages electrode.Wherein pin has limited the rotation of coulisse, and liquid barrier and hydrojet is chewed be between two electrodes, guarantee electrode safety.
Two, the pressure cylinder handwheel is installed in the electrode container top, and the effect of pressure cylinder handwheel is electrode container to be compressed guarantee that electrode and wire are not shifted.
Three, above the sour cloche of gear, liquid barrier is installed, is prevented that acid solution from spilling the injury operative employee.
Four, whole system operation control degree has automatically had further lifting, peace and quiet as example take the sugar juice decoloring in sugar refinery, full-automatic detection device of double-glass pH electrode of the present invention 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 control level and the product quality in sugar refinery.
Description of drawings
Fig. 1 is full-automatic detection device of double-glass pH electrode general assembly drawing of the present invention.
Fig. 2 is the mounting structure schematic diagram of electrode, electrode container and connected tooth bar.
Fig. 3 is the structural representation that liquid barrier is installed in the sour cloche of gear and top.
The parts table of comparisons in figure:
01-B group electrode 02-B group electrode lower seal 03-B group electrode container gear acid lid
O-ring seal in 04-rubber sampling bucket 05-B group electrode locating ring 06-B group electrode
The sour plate of the sour glass bottom plate 09-gear of O-ring seal 08-gear on 07-B group electrode
The sour glass of 11-A group electrode 12-gear is chewed in 10-spray acid
The sour fixed head 15-register pin on glass of 13-B group electrode container 14-gear
16-A group electrode container 17-A group tooth bar 18-coulisse
19-A group linking arm 20-A group electrode pressure cylinder handwheel 21-control lever upper mounted plate
22-waterproof cover 23-A group break-in pin 24-break-in helicla flute
25-changing direction spiral groove body 26-B class upper limit position Hall switch 27-upper limit Hall switch fixed head
28-control lever 29-B group electrode pressure cylinder handwheel 30-B lower class limit position Hall switch
31-fastening clip for cable 32-B group motor 33-motor shroud
The spacing set screw 35-body 36-B group of 34-B group linking arm
37-B group motor 38-guide holder 39-B group motor gear
The 40-acid discharge is chewed 41-B group tooth bar 42-and is advanced acid and chew
43-B group electrode location pressure cylinder 44-B group electrode tip 45-support
Embodiment
As shown in the figure, double-glass pH electrode continuous detection apparatus of the present invention comprises that support 45, two groups of glass electrode: A organize electrode 11 and B group electrode 01, the bottom of B group electrode 01 is equipped with electrode lower seal 02, electrode container gear acid lid 03 is arranged at top, the 04th, rubber sampling bucket, solution to be measured (sugarcane juice) enters rubber sampling bucket power pole and measures, and the 05th, the electrode locating ring prevents dislocation of electrode.electrode also is provided with O-ring seal 07 and middle O-ring seal 06, the 08th, keep off sour glass bottom plate, the 09th, keep off sour plate, the 10th, spray acid is chewed, the 12nd, keep off sour cloche, keep off sour cloche 12 tops the sour fixed head 14 on glass of gear is arranged, fixing with register pin 15, A organizes electrode 11 and is arranged in A group electrode container 16, B group electrode 01 is arranged in B group electrode container 13, A group electrode top is equipped with pressure cylinder handwheel 29, B group electrode also is installed by pressure cylinder handwheel 29 and B group electrode is located pressure cylinder 43, A group electrode container 16 is by linking arm 19 and the assembling of A group tooth bar, can drive up and down A group electrode 11 moves and measures, B group electrode 01 is also by linking arm and 41 assemblings of B group tooth bar, can drive up and down B group electrode 01 moves and measures, the 18th, coulisse, the break-in helicla flute 24 of guide holder 38 and the break-in pin 23 on tooth bar 17 are mutually movingly, changing direction spiral groove body 25 is equipped with in control lever 28 upper ends, liquid baffle board 09 is equipped with in the lower end, on described changing direction spiral groove body 25, break-in helicla flute 24 is arranged, guide pin 23 is housed on linking arm 19, changing direction spiral groove body 25 belows are coulisses 18 of double flute, the electrode clean system comprises that hydrojet chews 10 and cleaning fluid conveying pipeline.two groups of motor: B group motors 32 (A group motor has been blocked in the back of body 35), B organizes motor gear, B organizes linking arm, form the two arrays of electrodes jacking system, the spacing Hall switch in up and down: B class upper limit position Hall switch 26 and B lower class limit position Hall switch 30 (A group position Hall switch has been blocked in the back of body 35), B group Hall switch is arranged on lower limit Hall switch fixed head 30, contact conductor picks out to Measurement and Control System by many fastening clip for cables 31 from electrode 53 fixed caps
B group electrode container gear acid lid 03, B group electrode locating ring 05, B group electrode container 13, B group electrode location pressure cylinder 43, B group electrode pressure cylinder handwheel 29 roles are installation sites of fixed electorde in this device, when preventing B group electrode 01 with 13 motion of B group electrode container about and swing up and down.
In this device, in B group electrode lower seal 02, B group electrode on O-ring seal 06, B group electrode O-ring seal 07 role be sealing B group electrode tip 44, keep B group electrode tip 44 long-term dry.
The effect of B group electrode lower seal 02 gap that to be the cleaning fluids of chewing 10 ejections by spray acid when preventing cleaning electrode organize electrode container gear acid lid 03 and B group electrode 01 by B enters into B and organizes electrode container 13 inner chambers,
In B group electrode, O-ring seal 06 is identical with B group electrode lower seal 02, plays the double shield effect.
On B group electrode, acting as of O-ring seal 07 prevents that water vapor and water droplet from entering into B group electrode container 13 inner chambers from the through hole of B group electrode pressure cylinder handwheel 29 and B group electrode location pressure cylinder 43.
Electrode clean of the present invention system by the cleaning fluid storage tank that is arranged on bottom, sampled measurements chamber, advance that acid chews 42, acid discharge chews 41, infusion pump (not shown) and liquid reversal valve 34 consist of, cleaning fluid storage tank and body 35 are made of one, and keep off sour glass bottom plate 08 and the sour fixed head 14 on glass of gear and play the fixing effect of the sour glass 12 of spacing of up and down gear in device.
Keeping off sour glass 12 effects is that when preventing cleaning electrode, cleaning fluid is splashed to outside body, the 12nd, and the glass material manufacturing can see through the cleaning situation that the sour glass 12 of gear is observed electrode during the device long journey.Spacing and be fixed on body 35 by register pin 15 when keeping off sour fixed head on glass 14 and installing.
Surveying work process and the principle of double-glass pH electrode continuous detection apparatus of the present invention are as follows:
Sampling groove in measuring chamber is placed on support 45, and tested fluid enters or flows through the sampling groove, and B group electrode tip 44 puts in the sampling groove and detects, and collects data-signal and is sent to continuously computer by cable and process.And this moment, A electrode 11 has risen to predetermined height, and the sensor of stop means is pressed close to upper limit Hall switch 26, and (move on A group electrode 11, by wire, signal is passed to the computer of pulpit) just stops operating after B group motor 32 is received signal.Measure when B group electrode 01 and finish, motor transmission shaft is equipped with tooth bar 41 and rises, and also drives the electrode clean system in uphill process and turns an angle, and makes and hydrojet is chewed 10 and aligned B group electrode 01.Then the computer instruction infusion pump starts, and the cleaning fluid with certain pressure is chewed 10 from hydrojet and ejected B group electrode 01 is cleaned.Cleaning fluid after injection is flowed down by the cleaning fluid refluxing opening.In order to prevent that liquid liquid from leaking, the electrode clean chamber fences up with cloche 12.After predetermined detection time, computer instruction B organizes electric motor starting, and B group motor gear 39 and B group tooth bar 41 move down.B group electrode 01 just puts in measuring chamber.After dropping to predetermined altitude, the sensor of stop means is pressed close to B lower class limit position Hall switch 30, just stops operating after B group motor is received signal, and the B electrode begins to enter the detection-phase of awaiting orders.Through certain hour, after holding signal stabilization, under computer instruction, reason A group electrode 11 provides detection signal just to automatically switch to by B group electrode.Like this, detection signal does not interrupt, and reaches the purpose of continous-stable.
Height-rise or be that liquid barrier 09 in guaranteeing figure and hydrojet are chewed and all be in two electrode middles when high-fall at electrode.Preventing that electrode from chewing with liquid barrier and hydrojet in motion process bumps and damages electrode.Coulisse 18 has double flute, A organizes electrode and moves groove of use, and B group electrode moves and uses a groove, when B group break-in pin, electrode move up and down coulisse, A organizes the rotation that the break-in pin has limited another groove of coulisse, and liquid barrier and hydrojet are chewed be between two electrodes, guarantee electrode safety.
Compare with the double-glass pH electrode continuous detection apparatus before the inventor, it is more accurate that full-automatic detection device of double-glass pH electrode of the present invention has measurement, it is easier to operate, and the zero failure operation of sugar refinery on-line measurement has reached a press for extracting juice season continuous working need not change parts.
Claims (1)
1. full-automatic detection device of double-glass pH electrode, comprise A, two groups of glass electrodes of B, motor, rise fall of electrodes system, Measurement and Control System, the spacing Hall switch in up and down and electrode clean system, electrode is arranged on the electrode container lower end, the electrode container upper end has contact conductor to pick out to Measurement and Control System, motor is by gear train connecting electrode elevating mechanism, electrode lifting mechanism comprises guide holder, linking arm, rack shaft and tooth bar, and guide holder is fixed on body, it is characterized in that:
(1) the electrode container top is installed and is guaranteed electrode and the non-wiping pressure cylinder handwheel of wire;
(2) the mobile coulisse below changing direction spiral groove body is improved, become double flute by original single groove structure, A group electrode moves and uses a groove, and B group electrode moves and uses a groove;
(3) install gear acid lid additional at electrode container, when the electrode bottom is installed and is prevented that electrode from move with electrode container about and swing up and down, sealed electrical cartridge and the locating ring that keeps the long-term drying of electrode tip;
(4) the sour glass of gear top mounting plate, fixed head tightens up with register pin.
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| CN 201010602017 CN102103120B (en) | 2010-12-23 | 2010-12-23 | Improved double-glass pH electrode fully automatic detection device |
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| CN 201010602017 CN102103120B (en) | 2010-12-23 | 2010-12-23 | Improved double-glass pH electrode fully automatic detection device |
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| CN102103120B true CN102103120B (en) | 2013-06-12 |
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| CN102375012A (en) * | 2010-08-10 | 2012-03-14 | 中国石油化工集团公司 | Method for cleaning glass electrode used for on-line measurement of pH value of drilling fluid |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101413916A (en) * | 2008-11-28 | 2009-04-22 | 钦州华成自控设备有限公司 | Full-automatic detection device of double-glass pH electrode |
| CN201293767Y (en) * | 2007-04-28 | 2009-08-19 | 钦州华成自控设备有限公司 | On-line automatic cleaning and detecting device for double electrodes |
| CN201909773U (en) * | 2010-12-23 | 2011-07-27 | 钦州华成自控设备有限公司 | Improved full-automatic detection device with double pH (potential of hydrogen) glass electrodes |
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- 2010-12-23 CN CN 201010602017 patent/CN102103120B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201293767Y (en) * | 2007-04-28 | 2009-08-19 | 钦州华成自控设备有限公司 | On-line automatic cleaning and detecting device for double electrodes |
| CN101413916A (en) * | 2008-11-28 | 2009-04-22 | 钦州华成自控设备有限公司 | Full-automatic detection device of double-glass pH electrode |
| CN201909773U (en) * | 2010-12-23 | 2011-07-27 | 钦州华成自控设备有限公司 | Improved full-automatic detection device with double pH (potential of hydrogen) glass electrodes |
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