CN116223721A - Automatic monitoring type potentiometric titrator - Google Patents
Automatic monitoring type potentiometric titrator Download PDFInfo
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- CN116223721A CN116223721A CN202310469180.7A CN202310469180A CN116223721A CN 116223721 A CN116223721 A CN 116223721A CN 202310469180 A CN202310469180 A CN 202310469180A CN 116223721 A CN116223721 A CN 116223721A
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 41
- 238000004448 titration Methods 0.000 claims abstract description 95
- 239000007853 buffer solution Substances 0.000 claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 238000005485 electric heating Methods 0.000 claims abstract description 10
- 230000002572 peristaltic effect Effects 0.000 claims abstract description 8
- 238000004140 cleaning Methods 0.000 claims description 26
- 238000006073 displacement reaction Methods 0.000 claims description 25
- 239000007788 liquid Substances 0.000 claims description 22
- 230000005856 abnormality Effects 0.000 claims description 6
- 239000000872 buffer Substances 0.000 claims description 6
- 238000012360 testing method Methods 0.000 abstract description 25
- 230000001105 regulatory effect Effects 0.000 abstract description 22
- 238000004154 testing of material Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 21
- 230000008569 process Effects 0.000 description 16
- 230000008595 infiltration Effects 0.000 description 7
- 238000001764 infiltration Methods 0.000 description 7
- 238000003918 potentiometric titration Methods 0.000 description 6
- 238000005259 measurement Methods 0.000 description 5
- 238000002791 soaking Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 239000008213 purified water Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000004313 potentiometry Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000012552 review Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000000954 titration curve Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
- G01N31/16—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using titration
- G01N31/162—Determining the equivalent point by means of a discontinuity
- G01N31/164—Determining the equivalent point by means of a discontinuity by electrical or electrochemical means
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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Abstract
The invention provides an automatic monitoring type potentiometric titrator, and relates to the technical field of material testing and analyzing equipment. The automatic monitoring type potentiometric titrator comprises a machine case, a titration input device, a measuring circuit, a pure water bottle, a buffer solution bottle, a plurality of peristaltic pumps and an electromagnetic valve. According to the invention, the camera is used for monitoring the display screen, the second motor is used for driving the two groups of gears to drive the rotating shafts to rotate, so that the temperature and position regulating functions of the regulating switch during electric control calibration are achieved, the titration barrel in titration test is monitored by the camera, the titration test is ensured to be completed smoothly, the buzzer is used for giving an alarm to staff, the manual operation time during the past calibration and titration test can be greatly reduced, the automation level is improved, the joints of the eight groups of titration barrels and the sink are respectively provided with an electric heating layer and a temperature sensor, and the buffer solution in the titration barrel used for calibration is heated to different temperatures and kept by the control host, so that the calibration data is more accurate.
Description
Technical Field
The invention relates to the technical field of material testing and analyzing equipment, in particular to an automatic monitoring type potentiometric titrator.
Background
The measurement of the electrode potential is realized by measuring the electromotive force of a primary cell consisting of the electrode to be measured and the reference electrode. Thus, the potentiometric measuring instrument measures the electrode potential by forming a loop from the reference electrode, the indicator electrode and the measuring instrument. Potentiometric instruments fall into two categories: direct potentiometric measuring instrument and potentiometric titration measuring instrument.
The potentiometric titration instrument is an instrument for determining a titration end point by measuring potential change in the titration process by using a potentiometric titration method, wherein the potentiometric titration method is a method for determining the titration end point by measuring potential change in the titration process, and compared with a direct potentiometric method, the potentiometric titration method does not need to accurately measure an electrode potential value, and has the accuracy superior to the direct potentiometric method, and the potentiometric titration method indicates the titration end point by utilizing abrupt transitions of electrode potential;
in the prior art, more automatic potentiometric titrators exist, automation is realized when electromotive force measurement is convenient, a titration curve can be automatically drawn in the titration process, a titration end point is automatically found, the volume is automatically given, and the titration is rapid and convenient.
However, the potentiometers of the prior art still have the following drawbacks in use:
1. when the PH test is carried out, the instrument is generally required to be calibrated by configuring the buffer solution before measurement, the error is easy to occur in calibration due to different PH values of the buffer solution at different temperatures, the buffer solution with different PH values is generally adopted for twice calibration to eliminate the error, in fact, inaccurate temperature control of the buffer solution can cause inaccurate calibration for a plurality of times, the measurement structure is influenced, and each calibration is purely manual operation, so that misoperation exists;
2. when the automatic potentiometric titrator reaches the end point in the titration process, the titration speed is reduced through the electromagnetic valve, so that overdropping is avoided, but overdropping situations such as faults of the electromagnetic valve occur on site, real-time manual observation is needed in the titration process to determine that the titration process is correct, manual observation efficiency is low, and error rate is high;
in view of the foregoing, it is desirable to develop a potentiometric titrator that reduces the degree of manual intervention and automatically monitors the titration process.
Disclosure of Invention
(one) solving the technical problems
Aiming at the defects of the prior art, the invention provides an automatic monitoring type potentiometric titrator, which solves the problems that the existing potentiometric titrator generally needs to be calibrated by configuring buffer solution before measurement when PH test is carried out, the buffer solution is different in PH value at different temperatures, errors are easy to occur in calibration, the buffer solution with different PH values is generally adopted for twice calibration to eliminate the errors, in fact, inaccurate temperature control of the buffer solution can cause inaccurate calibration for a plurality of times, a measuring structure is influenced, each calibration is purely manual operation, misoperation exists, the titration speed is reduced through an electromagnetic valve in the titration process of the existing automatic potentiometric titrator, overdrop is avoided, but the situation of overdrop such as the occurrence of the fault of the electromagnetic valve on site is needed to be observed in real time in the titration process, and the problems of accurate titration process, low manual observation efficiency and high error rate are solved.
(II) technical scheme
In order to achieve the above purpose, the invention is realized by the following technical scheme: the utility model provides an automatic monitoring type potentiometric titrator, includes quick-witted case, titration input device, measuring circuit, pure water bottle, buffer bottle, multiunit peristaltic pump and solenoid valve, quick-witted case front wall and upper wall junction are provided with the inclined plane, the inclined plane front wall has from left to right set gradually display screen, control host computer, quick-witted case front wall just is located control host computer below and has set gradually temperature-regulating knob, positioning knob from left to right, quick-witted inboard front wall and with temperature-regulating knob, positioning knob inside and outside correspondence department is provided with two sets of regulating switch respectively, temperature-regulating knob, positioning knob rear end all is provided with the pivot, two sets of the pivot all runs through quick-witted case front wall, regulating switch in proper order and stretches out to the regulating switch rear side, be provided with the regulation control structure that is used for automatically controlled regulation between pivot and the quick-witted case inside wall, quick-witted case upper wall and central point put and be provided with circular opening, circular opening inside wall rotates through the bearing frame and is connected with the workstation, be provided with the rotatory drive structure that is used for driving the workstation rotation according to fixed angle between workstation and the quick-witted case, the counter sink is provided with eight sets of recess and the heavy groove on the workstation upper surface, the temperature-regulating knob, the setting plate is used for setting up the second side wall, the alarm plate is connected to the first side wall, the first side wall is located on the quick-witted case wall is fixed to the side wall, the first side wall is connected with the alarm plate, the first side wall is connected to the alarm plate, the first side wall is fixed, and the alarm plate is connected to the first side wall, and the first side wall is fixed down, and the alarm plate is used for setting is connected to the first side wall, and the first side wall is fixed to the side wall, the utility model discloses a cleaning solution bottle, including first fixing base upper wall, second fixing base upper wall, first support, the one end fixedly connected with titration frame of keeping away from the fixing tube, titration frame inner wall has from left to right set gradually agitator, dropping liquid admission pipe and electrode, dropping liquid admission pipe keeps away from the one end of titration frame and is connected with titration input device, the outer wall that dropping liquid admission pipe is located between titration frame and the titration input device is provided with reserve valve structure, quick-witted case upper wall just is located the workstation left side and is connected with the second support through the second fixing base fixedly connected with, the one end that the second fixing base was kept away from to the second support is provided with two washing liquid admission pipes, two the one end that the second support was kept away from to the washing liquid admission pipe is connected with pure water bottle, buffer bottle through a set of solenoid valve, peristaltic pump respectively.
Preferably, the adjusting control structure comprises a second motor, an angle displacement sensor and two groups of gears, the angle displacement sensor and the second motor are sequentially and fixedly connected to the lower wall of the inner side of the chassis and are located below the adjusting switch in sequence from front to back, the two groups of gears are respectively and fixedly connected to the end part of the rotating shaft extending to the rear side of the adjusting switch and the outer wall of the second motor extending shaft, and the angle displacement sensor is connected with the end part of the second motor extending shaft through a coupling.
Preferably, the rotary driving structure comprises a first motor and a tray, the first motor is fixedly connected to the lower wall on the inner side of the chassis, the tray is fixedly connected to the end part of the extending shaft of the first motor, one end, away from the first motor, of the tray is fixedly connected with the lower wall of the workbench, and the axis of the extending shaft of the first motor coincides with the center of the circle of the workbench.
Preferably, the temperature control structure comprises eight groups of electric heating layers and temperature sensors, wherein eight groups of electric heating layers are respectively and fixedly connected to the inner side lower walls of eight groups of sinking grooves, and eight groups of temperature sensors are respectively and fixedly connected to the inner side walls of eight groups of sinking grooves.
Preferably, the monitoring assembly comprises two groups of cameras, the two groups of cameras are respectively arranged on the upper wall of the first supporting plate and the upper wall of the case through two groups of third brackets, the two groups of cameras are respectively arranged in the rearmost group of the display screen and the eight groups of dripping cylinders in the monitoring direction, one end, far away from the cameras, of the third brackets is provided with a magnetic base, the two groups of cameras are respectively connected with the upper wall of the first supporting plate and the upper wall of the case through two groups of magnetic bases, and the two groups of cameras are respectively connected with a wireless signal of a control host.
Preferably, the alarm structure is a buzzer, the buzzer is fixedly connected to the right wall of the chassis and is close to the front wall, and the buzzer is electrically connected with the control host.
Preferably, the lifting driving assembly comprises a cylinder, two groups of guide rods, a sliding block and a magnetostriction displacement sensor, wherein the sliding block is fixedly connected to the outer wall of the fixed pipe and is close to the lower end of the fixed pipe, the two groups of guide rods are fixedly connected to the lower wall of the sliding block and are respectively positioned on the left side and the right side of the fixed pipe, one end, far away from the sliding block, of the guide rods sequentially penetrates through the first fixing seat and the second supporting plate and is in sliding connection with the first fixing seat, the cylinder is fixedly connected to the inner side wall of the fixed pipe, a cylinder extension shaft penetrates through the lower wall of the fixed pipe and extends out to the lower side of the fixed pipe, and the end part of the cylinder extension shaft is fixedly connected with the upper end of the first fixing seat.
Preferably, the magnetostrictive displacement sensor is fixedly connected to the rear wall of the sliding block, and the connecting rod on the magnetostrictive displacement sensor is fixedly connected with the rear wall of the first fixing seat.
Preferably, the standby valve structure is a standby electromagnetic valve, the standby electromagnetic valve is arranged on the outer wall of the drip inlet pipe and is positioned between the drip rack and the titration input device, and the standby electromagnetic valve is electrically connected with the control host.
(III) beneficial effects
The invention provides an automatic monitoring type potentiometric titrator. The beneficial effects are as follows:
1. compared with the prior art, the automatic monitoring type potentiometric titrator monitors the numerical value appearing in the calibration process on the display screen through the camera, and drives the two groups of gears to drive the rotating shafts to rotate through the second motor, so that the temperature and position adjusting effects of the regulating switch in the electric control calibration process are achieved, and the calibration automation operation is realized;
2. compared with the prior art, the automatic monitoring type potentiometric titrator monitors a titration barrel in titration test through the camera, when the titration speed is not reduced according to the requirement when reaching a preset end point, the control host immediately starts the standby electromagnetic valve to take over the input of the titration input device, ensures that the titration test is finished smoothly, gives an alarm to staff through the buzzer, automatically monitors the test process in the whole course through the camera, and can conveniently review the test process at any time through common storage equipment in the market;
3. compared with the prior art, the automatic monitoring type potentiometric titrator is provided with eight groups of titration barrels, can be used for primary cleaning, primary infiltration, primary calibration, secondary cleaning, secondary infiltration, secondary calibration, titration test and test finishing cleaning respectively, purified water for cleaning and buffer solution for infiltration and calibration are matched with a first motor through two groups of cleaning solution inlet pipes to drive a workbench to rotate for completing the introduction, and electrodes are driven by the extension and retraction of an extension shaft of an air cylinder to sequentially enter the eight groups of titration barrels for operation, so that the manual operation time in the past calibration and titration test can be greatly reduced, and the automation level is improved;
4. compared with the prior art, the automatic monitoring type potentiometric titrator has the advantages that the electric heating layers and the temperature sensors are arranged at the joints of the eight groups of titration cylinders and the sink, and buffer liquid in the titration cylinders used for primary calibration and secondary calibration is heated to different temperatures and kept by the control host, so that the calibration data are more accurate.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is an enlarged view of a portion of the invention at A in FIG. 1;
FIG. 3 is a partial side cross-sectional view of the attachment structure of the present invention for a stationary tube, a first bracket, a first stationary seat, and a magnetostrictive displacement sensor;
FIG. 4 is a partial cross-sectional view of the internal structure of the chassis of the present invention;
FIG. 5 is a partial schematic view of a first stay plate and camera connection structure according to the present invention;
fig. 6 is a side partial cross-sectional view of the internal structure of the cabinet of the present invention.
Wherein, 1, a case; 2. an inclined plane; 3. a display screen; 4. a control host; 5. a temperature adjustment knob; 6. a positioning knob; 7. a first stay plate; 8. a camera; 9. a second stay plate; 10. a first fixing seat; 11. a guide rod; 12. a sliding block; 13. a first bracket; 14. a fixed tube; 15. a drip inlet pipe; 16. a standby electromagnetic valve; 17. the second fixing seat; 18. a second bracket; 19. a cleaning liquid inlet pipe; 20. a work table; 21. a titration cylinder; 22. a titration frame; 23. a stirrer; 24. an electrode; 25. magnetostrictive displacement sensor; 26. a cylinder; 27. a bearing seat; 28. a first motor; 29. a tray; 30. an electrical heating layer; 31. a temperature sensor; 32. a third bracket; 33. a magnetic base; 34. an adjusting switch; 35. a gear; 36. a second motor; 37. a coupling; 38. an angular displacement sensor; 39. a buzzer.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Examples
As shown in fig. 1 to 6, the embodiment of the invention provides an automatic monitoring type potentiometric titrator, which comprises a case 1, a titration input device, a measuring circuit, a pure water bottle, a buffer solution bottle, a plurality of groups of peristaltic pumps and an electromagnetic valve, wherein an inclined plane 2 is arranged at the joint of the front wall and the upper wall of the case 1, a display screen 3 and a control host 4 are sequentially arranged on the front wall of the inclined plane 2 from left to right, a temperature adjusting knob 5 and a positioning knob 6 are sequentially arranged on the front wall of the case 1 and below the control host 4 from left to right, two groups of adjusting switches 34 are respectively arranged on the front wall of the inner side of the case 1 and the positions corresponding to the temperature adjusting knob 5 and the inside and outside of the positioning knob 6, the rear ends of the temperature adjusting knob 5 and the positioning knob 6 are respectively provided with rotating shafts, the two groups of rotating shafts sequentially penetrate through the front wall of the case 1 and the adjusting switches 34 and extend to the rear side of the adjusting switches 34, an adjusting control structure for electric control adjustment is arranged between the rotating shafts and the inner side walls of the case 1, the adjusting control structure comprises a second motor 36, an angle displacement sensor 38 and two groups of gears 35, the angle displacement sensor 38 and the second motor 36 are sequentially and fixedly connected to the lower wall of the inner side of the case 1 from front to back and are positioned below the adjusting switch 34, the two groups of gears 35 are respectively and fixedly connected to the end part of the rotating shaft extending to the rear side of the adjusting switch 34 and the outer wall of the extending shaft of the second motor 36, the angle displacement sensor 38 is connected with the end part of the extending shaft of the second motor 36 through a coupler 37, when the traditional equipment is in calibration, calibration data are required to be observed manually, the temperature adjusting knob 5 and the positioning knob 6 are manually rotated to adjust the adjusting switch 34 to the position consistent with the numerical value of the display screen 3, the equipment can acquire the calibration data through the camera 8 positioned in front of the display screen 3, the control host 4 controls the rotation of the second motor 36, the rotating shaft is driven to rotate through the two groups of gears 35, the rotating shaft is connected with the regulating switch 34, the purpose of regulating the regulating switch 34 is achieved when the rotating shaft rotates, the regulating precision is detected through the angle displacement sensor 38, meanwhile, the second motor 36 can play a role in generating certain damping on the temperature regulating knob 5 and the position regulating knob 6 when the power is not applied, after calibration is finished, the second motor 36 is applied with power and outputs zero rotating speed, the temperature regulating knob 5 and the position regulating knob 6 can be locked, and misoperation is avoided;
the upper wall of the case 1 is provided with a circular opening at the center, the inner side wall of the circular opening is rotationally connected with a workbench 20 through a bearing seat 27, a rotary driving structure for driving the workbench 20 to rotate according to a fixed angle is arranged between the workbench 20 and the case 1, the rotary driving structure comprises a first motor 28 and a tray 29, the first motor 28 is fixedly connected to the inner lower wall of the case 1, the tray 29 is fixedly connected to the end part of an extending shaft of the first motor 28, one end of the tray 29, far away from the first motor 28, is fixedly connected to the lower wall of the workbench 20, the axis of the extending shaft of the first motor 28 coincides with the center of the workbench 20, the first motor 28 rotates at a fixed angle through control of a control host 4, and the workbench 20 is driven to rotate through the tray 29 when rotating, so that eight groups of titration cylinders 21 are sequentially rotated below a titration frame 22, calibration and titration work are convenient, and the first motor 28 is a common speed reduction servo power on the market.
Eight groups of concave sinking grooves are formed in the upper wall of the workbench 20 and sink grooves are formed in the upper surface of the workbench 20, the inner side walls of the eight groups of sinking grooves are provided with dripping cylinders 21, the eight groups of dripping cylinders 21 can be used for primary cleaning, primary soaking, primary calibration, secondary cleaning, secondary soaking, secondary calibration, titration test and test finishing cleaning respectively, purified water is led into the dripping cylinders 21 for the test finishing cleaning through one of two cleaning liquid inlet pipes 19, and buffer solution is led into the dripping cylinders 21 for the primary soaking, primary calibration, secondary soaking and secondary calibration through the other cleaning liquid inlet pipe 19;
the inner side wall of the settling tank is provided with a temperature control structure for controlling the temperature of the titration barrel 21, the temperature control structure comprises eight groups of electric heating layers 30 and temperature sensors 31, the eight groups of electric heating layers 30 are respectively and fixedly connected to the inner side lower wall of the eight groups of settling tank, the eight groups of temperature sensors 31 are respectively and fixedly connected to the inner side wall of the eight groups of settling tank, the eight groups of electric heating layers 30 can be respectively controlled to heat through a control host 4, the titration barrel 21 for primary calibration and secondary calibration can be heated to different temperatures and kept at the temperatures, and buffer solutions are at different PH values, so that the calibration structure can be more accurate, and the temperature of the outer wall of the titration barrel 21 can be monitored through the temperature sensors 31;
the front wall of the case 1 and positioned below the display screen 3 is fixedly connected with a first supporting plate 7, the upper wall of the first supporting plate 7 and the upper wall of the case 1 are both provided with monitoring components through a third bracket 32, each monitoring component comprises two groups of cameras 8, the two groups of cameras 8 are respectively arranged on the upper wall of the first supporting plate 7 and the upper wall of the case 1 through two groups of third brackets 32, the monitoring directions of the two groups of cameras 8 are respectively the rearmost group of the display screen 3 and the eight groups of titration cylinders 21, one end of the third bracket 32, which is far away from the cameras 8, is provided with a magnetic base 33, the two groups of cameras 8 are respectively connected with the upper wall of the first supporting plate 7 and the upper wall of the case 1 through the two groups of magnetic bases 33, the two groups of cameras 8 are both connected with a control host 4 through wireless signals, the two groups of cameras 8 can be conveniently installed and distributed through the magnetic bases 33, the two groups of third brackets 32 are brackets with adjustable angles so as to facilitate the adjustment of the position of the camera 8, the camera 8 in front of the display screen 3 is used for monitoring the numerical variation on the display screen 3, the numbers appearing on the display screen 3 during calibration can be read and transmitted to the control host 4 through a common image processing module in the market, the camera 8 on the case 1 is used for monitoring the titration test process, monitoring the titration speed through a common capturing program in time, particularly for monitoring whether the titration speed is reduced according to the requirement or not when the preset endpoint is about to be reached, if the titration speed is not reduced according to the requirement, the titration speed is fed back to the control host 4, the standby electromagnetic valve 16 is started through the control host 4, and the titration experiment is taken over so as to ensure the successful and accurate titration test;
the right side wall of the case 1 is provided with an alarm structure for giving an alarm when the monitoring component finds abnormality, the alarm structure is a buzzer 39, the buzzer 39 is fixedly connected to the right wall of the case 1 and is close to the front wall, the buzzer 39 is electrically connected with the control host 4, and when the monitoring component finds abnormality, the control host 4 starts the buzzer 39 to remind a worker of paying attention, so that the abnormality is prevented from being ignored and affecting the subsequent test;
the rear wall of the case 1 is fixedly connected with a second supporting plate 9, the upper wall of the second supporting plate 9 is fixedly connected with a first fixed seat 10, the upper wall of the first fixed seat 10 is provided with a fixed pipe 14 through a lifting driving assembly, the outer wall of the fixed pipe 14 is fixedly connected with a first bracket 13, one end of the first bracket 13, which is far away from the fixed pipe 14, is fixedly connected with a titration frame 22, the inner wall of the titration frame 22 is sequentially provided with a stirrer 23, a drip inlet pipe 15 and an electrode 24 from left to right, one end of the drip inlet pipe 15, which is far away from the titration frame 22, is connected with a titration input device, the lifting driving assembly comprises an air cylinder 26, two groups of guide rods 11, a sliding block 12 and a magnetostriction displacement sensor 25, the sliding block 12 is fixedly connected with the outer wall of the fixed pipe 14 and is close to the lower end position, the two groups of guide rods 11 are fixedly connected with the lower wall of the sliding block 12 and are respectively positioned at the left side and right sides of the fixed pipe 14, one ends of the two groups of guide rods 11 far away from the sliding block 12 sequentially penetrate through the first fixing seat 10 and the second supporting plate 9 and are in sliding connection with the first fixing seat, the air cylinder 26 is fixedly connected to the inner side wall of the fixing tube 14, the extension shaft of the air cylinder 26 penetrates through the lower wall of the fixing tube 14 and extends to the lower side of the fixing tube 14, the end part of the extension shaft of the air cylinder 26 is fixedly connected with the upper end of the first fixing seat 10, the magnetostrictive displacement sensor 25 is fixedly connected to the rear wall of the sliding block 12, the connecting rod on the magnetostrictive displacement sensor 25 is fixedly connected with the rear wall of the first fixing seat 10, the extension and retraction actions of the extension shaft of the air cylinder 26 drive the fixing tube 14 to ascend and descend, so as to drive the dripping frame 22, the stirrer 23, the dripping liquid inlet tube 15 and the electrode 24 to ascend and descend, the actions of the electrode 24 entering and exiting the dripping cylinder 21 are completed, the stroke accuracy of the air cylinder 26 can be improved through the magnetostrictive displacement sensor 25, the situation of out-of-place or bottom collision is avoided;
the outer wall of the drip inlet pipe 15 between the drip rack 22 and the titration input device is provided with a standby valve structure, the standby valve structure is a standby electromagnetic valve 16, the standby electromagnetic valve 16 is arranged on the outer wall of the drip inlet pipe 15 and between the drip rack 22 and the titration input device, the standby electromagnetic valve 16 is electrically connected with the control host 4, and the standby electromagnetic valve 16 is used for taking over a titration input passage when the electromagnetic valve on the titration input device fails, so that the normal test is ensured;
the upper wall of the case 1 and the left side of the workbench 20 are fixedly connected with a second bracket 18 through a second fixing seat 17, one end, far away from the second fixing seat 17, of the second bracket 18 is provided with two cleaning liquid inlet pipes 19, one end, far away from the second bracket 18, of the two cleaning liquid inlet pipes 19 is respectively connected with a pure water bottle and a buffer liquid bottle through a group of electromagnetic valves and peristaltic pumps, and the two cleaning liquid inlet pipes 19 are respectively used for guiding pure water and buffer liquid into the dripping cylinder 21.
Working principle: the second motor 36 is controlled by the control host 4 to rotate, the rotating shaft is driven by the two groups of gears 35 to rotate, the rotating shaft is connected with the regulating switch 34, the aim of regulating the regulating switch 34 is fulfilled when the rotating shaft rotates, the regulating precision is detected by the angle displacement sensor 38, meanwhile, the second motor 36 can play a role of generating certain damping for the regulating temperature knob 5 and the regulating position knob 6 when not electrified, the second motor 36 is electrified and outputs zero rotating speed after the calibration is finished, the regulating temperature knob 5 and the regulating position knob 6 can be locked, and the misoperation is avoided,
the first motor 28 rotates at a fixed angle through the control of the control host 4, the workbench 20 is driven to rotate through the tray 29 during rotation, eight groups of titration barrels 21 are sequentially rotated below the titration frame 22, the calibration and titration work are convenient, the first motor 28 is a common deceleration servo electricity in the market,
eight groups of titration cylinders 21 can be respectively used for primary cleaning, primary infiltration, primary calibration, secondary cleaning, secondary infiltration, secondary calibration, titration test and test end cleaning, wherein purified water is introduced into the titration cylinders 21 for test end cleaning through one of two cleaning liquid inlet pipes 19, buffer solution is introduced into the titration cylinders 21 for primary infiltration, primary calibration, secondary infiltration and secondary calibration through the other cleaning liquid inlet pipe 19,
eight groups of electric heating layers 30 can be respectively controlled to be heated through a control host 4, the titration barrels 21 for primary calibration and secondary calibration can be heated to different temperatures and kept at different pH values, so that the calibration structure can be more accurate, and the temperature of the outer wall of the titration barrel 21 can be monitored through a temperature sensor 31;
the camera 8 in front of the display screen 3 is used for monitoring the numerical value change on the display screen 3, the numbers appearing on the display screen 3 during calibration can be read and transmitted to the control host 4 through a common image processing module in the market, the camera 8 on the case 1 is used for monitoring the titration test process, monitoring the titration speed through a common time capturing program, particularly for monitoring whether the titration speed is reduced according to the requirement when the titration speed is about to reach a preset end point, if the titration speed is not reduced according to the requirement, the titration speed is fed back to the control host 4, the standby electromagnetic valve 16 is started through the control host 4, and the titration experiment is taken over, so that the titration test is ensured to be successfully and accurately completed;
the buzzer 39 is electrically connected with the control host 4, and when the monitoring component finds abnormality, the control host 4 starts the buzzer 39 to remind a worker of paying attention, so that the abnormality is prevented from being ignored and the subsequent test is prevented from being influenced;
the fixed pipe 14 is driven to ascend and descend through the extending and retracting actions of the extending shaft of the air cylinder 26, so that the dripping frame 22, the stirrer 23, the dripping liquid inlet pipe 15 and the electrode 24 are driven to ascend and descend, the actions of the electrode 24 entering and exiting the dripping cylinder 21 are completed, the stroke precision of the air cylinder 26 can be improved through the magnetostriction displacement sensor 25, and the condition of out-of-place or bottom collision is avoided;
one end of the two cleaning liquid inlet pipes 19 far away from the second bracket 18 is respectively connected with a pure water bottle and a buffer solution bottle through a group of electromagnetic valves and peristaltic pumps, and the two cleaning liquid inlet pipes 19 are respectively used for guiding pure water and buffer solution into the dripping cylinder 21.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The utility model provides an automatic potentiometric titrator of control formula, includes quick-witted case (1), titration input device, measuring circuit, pure water bottle, buffer bottle, multiunit peristaltic pump and solenoid valve, its characterized in that: the utility model discloses a rotary drop-in type automatic control device for the electric control of the water heater, which comprises a cabinet (1), wherein an inclined plane (2) is arranged at the junction of the front wall and the upper wall of the cabinet (1), a display screen (3) and a control host (4) are sequentially arranged on the front wall of the inclined plane (2) from left to right, a temperature adjusting knob (5) and a positioning knob (6) are sequentially arranged below the control host (4), two groups of adjusting switches (34) are respectively arranged at the inner front wall of the cabinet (1) and at the inner and outer corresponding positions of the temperature adjusting knob (5) and the positioning knob (6), rotary shafts are respectively arranged at the rear ends of the temperature adjusting knob (5) and the positioning knob (6), the two groups of rotary shafts sequentially penetrate through the front wall of the cabinet (1), the adjusting switches (34) and extend out to the rear side of the adjusting switches (34), an adjusting control structure for electric control is arranged between the rotary shafts and the inner side walls of the cabinet (1), a circular opening is arranged on the upper wall of the cabinet (1) and the middle, the circular opening inner side wall is rotationally connected with a workbench (20) through a bearing seat (27), a rotary driving workbench (20) is arranged between the workbench (20) and the cabinet (1) and the cabinet (20) and the inner side wall is provided with a rotary driving groove (20), the inner side wall of the sinking tank is provided with a temperature control structure for controlling the temperature of the dripping barrel (21), a first supporting plate (7) is fixedly connected to the front wall of the chassis (1) and positioned below the display screen (3), monitoring components are arranged on the upper wall of the first supporting plate (7) and the upper wall of the chassis (1) through a third bracket (32), an alarm structure for giving an alarm when the monitoring components find abnormality is arranged on the right side wall of the chassis (1), a second supporting plate (9) is fixedly connected to the rear wall of the chassis (1), a first fixing seat (10) is fixedly connected to the upper wall of the second supporting plate (9), the upper wall of the first fixing seat (10) is provided with a fixed pipe (14) through a lifting driving assembly, the outer wall of the fixed pipe (14) is fixedly connected with a first bracket (13), one end of the first bracket (13) away from the fixed pipe (14) is fixedly connected with a titration frame (22), the inner wall of the titration frame (22) is sequentially provided with a stirrer (23), a drip inlet pipe (15) and an electrode (24) from left to right, one end of the drip inlet pipe (15) away from the titration frame (22) is connected with a titration input device, the outer wall of the drip inlet pipe (15) between the titration frame (22) and the titration input device is provided with a standby valve structure, the machine case is characterized in that a second bracket (18) is fixedly connected to the left side of the workbench (20) through a second fixing seat (17), two cleaning liquid inlet pipes (19) are arranged at one end, far away from the second fixing seat (17), of the second bracket (18, and one end, far away from the second bracket (18), of each cleaning liquid inlet pipe (19) is connected with a pure water bottle and a buffer solution bottle through a group of electromagnetic valves and peristaltic pumps respectively.
2. An automatic monitoring potentiometric titrator as in claim 1, wherein: the adjusting control structure comprises a second motor (36), an angle displacement sensor (38) and two groups of gears (35), wherein the angle displacement sensor (38) and the second motor (36) are sequentially and fixedly connected to the lower wall of the inner side of the chassis (1) from front to back and are located below the adjusting switch (34), the two groups of gears (35) are respectively and fixedly connected to the end part of the rotating shaft extending to the rear side of the adjusting switch (34) and the outer wall of the shaft extending out of the second motor (36), and the angle displacement sensor (38) is connected with the end part of the shaft extending out of the second motor (36) through a coupler (37).
3. An automatic monitoring potentiometric titrator as in claim 2, wherein: the rotary driving structure comprises a first motor (28) and a tray (29), wherein the first motor (28) is fixedly connected to the lower wall of the inner side of the chassis (1), the tray (29) is fixedly connected to the end part of an extending shaft of the first motor (28), one end, far away from the first motor (28), of the tray (29) is fixedly connected with the lower wall of the workbench (20), and the axis of the extending shaft of the first motor (28) coincides with the center of a circle of the workbench (20).
4. An automatic monitoring potentiometric titrator as in claim 3, wherein: the temperature control structure comprises eight groups of electric heating layers (30) and temperature sensors (31), wherein the eight groups of electric heating layers (30) are respectively and fixedly connected to the inner side lower walls of the eight groups of sinking grooves, and the eight groups of temperature sensors (31) are respectively and fixedly connected to the inner side walls of the eight groups of sinking grooves.
5. An automatic monitoring potentiometric titrator as in claim 4, wherein: the monitoring assembly comprises two groups of cameras (8), the two groups of cameras (8) are respectively arranged on the upper wall of the first supporting plate (7) and the upper wall of the case (1) through two groups of third supports (32), the two groups of cameras (8) are respectively arranged in a group of rearmost display screens (3) and eight groups of titration barrels (21), one end, far away from the cameras (8), of each third support (32) is provided with a magnetic base (33), the two groups of cameras (8) are respectively connected with the upper wall of the first supporting plate (7) and the upper wall of the case (1) through two groups of magnetic bases (33), and the two groups of cameras (8) are connected with a control host (4) through wireless signals.
6. An automatic monitoring potentiometric titrator as in claim 5, wherein: the alarm structure is a buzzer (39), the buzzer (39) is fixedly connected to the right wall of the case (1) and is close to the front wall, and the buzzer (39) is electrically connected with the control host (4).
7. An automatic monitoring potentiometric titrator as in claim 6, wherein: the lifting drive assembly comprises an air cylinder (26), two groups of guide rods (11), a sliding block (12) and a magnetostriction displacement sensor (25), wherein the sliding block (12) is fixedly connected to the outer wall of a fixed pipe (14) and is close to the lower end of the fixed pipe, the two groups of guide rods (11) are fixedly connected to the lower wall of the sliding block (12) and are respectively located at the left side and the right side of the fixed pipe (14), one ends, far away from the sliding block (12), of the two groups of guide rods (11) sequentially penetrate through a first fixing seat (10) and a second supporting plate (9) and are in sliding connection with the first fixing seat, the air cylinder (26) is fixedly connected to the inner side wall of the fixed pipe (14), an extending shaft of the air cylinder (26) penetrates through the lower wall of the fixed pipe (14) and extends to the lower side of the fixed pipe (14), and the end of the extending shaft of the air cylinder (26) is fixedly connected with the upper end of the first fixing seat (10).
8. An automatic monitoring potentiometric titrator as in claim 7, wherein: the magnetostrictive displacement sensor (25) is fixedly connected to the rear wall of the sliding block (12), and a connecting rod on the magnetostrictive displacement sensor (25) is fixedly connected with the rear wall of the first fixing seat (10).
9. An automatic monitoring potentiometric titrator as in claim 8, wherein: the standby valve structure is a standby electromagnetic valve (16), the standby electromagnetic valve (16) is arranged on the outer wall of the drip inlet pipe (15) and is positioned between the drip rack (22) and the titration input device, and the standby electromagnetic valve (16) is electrically connected with the control host (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310469180.7A CN116223721A (en) | 2023-04-27 | 2023-04-27 | Automatic monitoring type potentiometric titrator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310469180.7A CN116223721A (en) | 2023-04-27 | 2023-04-27 | Automatic monitoring type potentiometric titrator |
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| CN116223721A true CN116223721A (en) | 2023-06-06 |
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| CN202310469180.7A Pending CN116223721A (en) | 2023-04-27 | 2023-04-27 | Automatic monitoring type potentiometric titrator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117761242A (en) * | 2024-02-22 | 2024-03-26 | 北京理工大学 | explosive acid value detection device capable of automatically dissolving sample |
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| CN102253164A (en) * | 2011-04-26 | 2011-11-23 | 东北电力大学 | Water alkalinity on-line measuring device based on solution image technology and measuring method thereof |
| CN112444597A (en) * | 2020-11-25 | 2021-03-05 | 西南石油大学 | High-precision full-automatic titration device |
| CN212932525U (en) * | 2020-07-04 | 2021-04-09 | 福建紫金矿冶测试技术有限公司 | Titration apparatus with temperature control |
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| CN2084619U (en) * | 1989-08-02 | 1991-09-11 | 上海新光内衣染织厂 | Automatic titration analysis device |
| JPH0658882A (en) * | 1992-08-05 | 1994-03-04 | Nakano Vinegar Co Ltd | Automatic titrator |
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| CN117761242A (en) * | 2024-02-22 | 2024-03-26 | 北京理工大学 | explosive acid value detection device capable of automatically dissolving sample |
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