CN115586297A - Efficient and accurate component titration device - Google Patents
Efficient and accurate component titration device Download PDFInfo
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- CN115586297A CN115586297A CN202211186580.9A CN202211186580A CN115586297A CN 115586297 A CN115586297 A CN 115586297A CN 202211186580 A CN202211186580 A CN 202211186580A CN 115586297 A CN115586297 A CN 115586297A
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- 238000004448 titration Methods 0.000 title claims abstract description 193
- 239000007788 liquid Substances 0.000 claims description 74
- 230000001681 protective effect Effects 0.000 claims description 19
- 230000009467 reduction Effects 0.000 claims description 10
- 239000000463 material Substances 0.000 abstract description 2
- 239000000243 solution Substances 0.000 description 71
- 230000008859 change Effects 0.000 description 12
- 230000000670 limiting effect Effects 0.000 description 9
- 238000000034 method Methods 0.000 description 7
- 230000002829 reductive effect Effects 0.000 description 7
- 230000001105 regulatory effect Effects 0.000 description 7
- 238000012360 testing method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 6
- 230000009471 action Effects 0.000 description 5
- 238000002474 experimental method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000005286 illumination Methods 0.000 description 4
- 230000000875 corresponding effect Effects 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 230000036961 partial effect Effects 0.000 description 3
- 239000011435 rock Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000003044 adaptive effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 208000003464 asthenopia Diseases 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000005497 microtitration Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000004445 quantitative analysis Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
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- 239000000126 substance Substances 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
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Abstract
The invention discloses an efficient and accurate component titration device which comprises a high-capacity automatic pump assembly, a high-precision automatic pump assembly and an adjustable-speed cradle, wherein the high-capacity automatic pump assembly, the high-precision automatic pump assembly and the adjustable-speed cradle are electrically controlled by a controller assembly, a solution bottle to be titrated is arranged on the adjustable-speed cradle, and the solution bottle to be titrated is communicated with the high-capacity automatic pump assembly and the high-precision automatic pump assembly through pipelines. Can realize accurate quantitative titration, homogeneous mixing and ensure that the titration result is accurate reliable, titrate while shaking evenly in the titration, and titrate fast in earlier stage, the later stage is titrated slowly, when raising the efficiency, guarantees to titrate accurately. In addition, the cradle is adjustable speed, can cooperate with titration speed, is suitable for the mixing of different viscosity material, improves and titrates the accuracy.
Description
Technical Field
The invention belongs to the field of component detection equipment, and particularly relates to a high-efficiency and accurate component titration device.
Background
Titration is a chemical experimental operation and also a commonly used quantitative analysis means. In the existing titration experiment operation, the required experimental devices mainly comprise a titration table, an acid-base burette, a glass rod, a beaker, a conical bottle and the like. During manual titration, a lot of equipment are provided, a lot of matters need to be paid attention, the operation is complicated, the accuracy of the result mainly depends on the manual operation of an experimenter, and if micro titration is carried out, a little or more drops of the titrating liquid are dripped by the experimenter, so that a great error is possibly caused; for example, when reading, the scale mark is small, the light is not good, or the vision of the experimenter is high or low, the vision is poor, the visual fatigue and other problems may cause reading errors and affect the experimental precision. And therefore, the requirements for the laboratory personnel to operate manually are high. In addition, when titration experiments are carried out in a non-laboratory environment, the manual operation difficulty of a laboratory worker is multiplied due to the interference of surrounding environmental factors.
In addition to the requirement of a laboratory worker for achieving high precision in operation, titration requires that the laboratory instruments used have high controllability and high precision. Most experimental devices such as burettes and pipettes are glassware which is fragile and inconvenient to operate and carry. When a sample with high viscosity is titrated, a part of titrating liquid needs to be titrated first, then the stirring of the glass rod for titration is stopped, so that the titrating liquid and the sample are uniformly mixed, the operation is repeated until the titration end point, the stirring workload of the glass rod is high, the experimental efficiency is reduced, the time for analyzing the sample is increased, and the fact that the reaction is proper and the result is accurate is not easy to judge in time; and the condition that liquid splashes and the liquid adding amount is not easy to control easily occurs in the operation process like the condition that the pouring liquid is poured by holding a beaker by the existing burette, and the titrating liquid has stronger corrosivity and can bring harm to experimenters.
The application number is 202010058613.6's patent discloses a portable component titration outfit, when needs are titrated the component, the component that will treat to titrate holds in the erlenmeyer flask, can titrate the operation through pressing the start button, wherein, the start button gives the singlechip with signal transmission, and then singlechip control high accuracy automatic titration pipe titrates drop by drop, can realize high accuracy control, when titrating one drop, open and vibrate the platform, it shakes the vibrations to drive the erlenmeyer flask, be convenient for shake evenly, high accuracy automatic titration pipe and shake platform cooperation use, control titration precision and quantity, guarantee the accuracy of final result. The device adopts automatic titration, has avoided the error that manual operation brought, has reduced the operation degree of difficulty, and titrates the in-process, and titrates every drop of standard liquid volume of titration and be 0.1ml, though control is accurate, has improved the experiment precision, but still will shake even operation after every drop titrates, and uncontrollable titration speed for titration time is longer, seriously influences experimental efficiency.
The patent with the application number of 202110330285.5 discloses a split type automatic spectrum titrator, which comprises a limiting shaking component; the limiting and shaking assembly is arranged on the mounting seat; the limiting and shaking assembly comprises a limiting seat, a moving rod, a first shaking piece and a second shaking piece; a limiting groove is formed in the mounting seat; a track is arranged on the periphery of the limiting groove; the second shaking piece is arranged on the track; the movable rod is arranged in the limit groove in a sliding manner; the limiting seat is arranged at the upper end of the movable rod; the first shaking pieces are arranged in a plurality of groups around the moving rod and matched with the second shaking pieces; the first shaking piece comprises an eccentric wheel, a first rotating shaft, a first gear, a pushing roller, a half gear and a second rotating shaft; the first rotating shaft and the second rotating shaft are both rotatably arranged in the limiting groove; the eccentric wheel and the first gear are respectively in key connection with two ends of the first rotating shaft; the pushing roller is connected with the second rotating shaft; the half gear is arranged on one side of the pushing roller and meshed with the first gear; the second shaking piece comprises a motor roller and a walking piece; the walking member moves along the track; the electric roller is rotatably arranged on the walking piece and is sequentially matched with the pushing rollers on the multiple groups of first shaking pieces. The device sets up spacing subassembly of rocking, rocks through the limit titration, realizes that the beaker removes along annular orbit for titrate mixing, the reaction of solution, improve the accuracy of titrating. But it rocks the structure and sets up complicacy, and still can not control titration speed for titration time is longer, seriously influences experimental efficiency.
Disclosure of Invention
In order to solve the problems, the invention provides an efficient and accurate component titration device, which aims to solve the problems of inaccurate result and low experimental efficiency caused by difficult manual operation and uncontrollable titration speed.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides a high-efficient accurate component titration outfit, is equipped with high capacity automatic pump subassembly, high accuracy automatic pump subassembly and the adjustable speed cage chair through controller subassembly electric control on the base, the adjustable speed cage chair is overhead to be waited to titrate the solution bottle, wait to titrate the solution bottle with high capacity automatic pump subassembly and high accuracy automatic pump subassembly all communicate through the pipeline.
Adopt above-mentioned technical scheme, when need treat that the solution in the titration solution bottle carries out the titration regularly, but the controller subassembly controls adjustable speed cage chair earlier and rocks, high capacity automatic pump subassembly carries out quick titration simultaneously, it needs to be noted that, quick titration is for the titration liquid not become the waterline or under the water injection, but rather the one drop that is faster drops and falls down, observe the indicator condition after titrating certain dosage and time, stop the operation of high capacity automatic pump subassembly and make quick titration stop, the controller subassembly controls high accuracy automatic pump subassembly again and carries out the slow titration, stop titrating when the indicator produces the demand change. This technical scheme can enough be when autotitrating the limit and shake the mixing, can also titrate fast earlier stage, and the later stage is titrated slowly, greatly reduced the operation degree of difficulty, promoted experiment degree of accuracy and efficiency. Because the automatic titration and the shaking up mode are adopted, the difficulty of manual operation is avoided, the operation difficulty is reduced, the operation accuracy is improved, the titration and the shaking up are carried out simultaneously when the titration is carried out, the special shaking up time after the titration is saved, the experimental efficiency is greatly improved, the early-stage rapid titration and the later-stage slow titration can be carried out, the titration time is shortened while the titration accuracy is ensured, and the experimental efficiency is improved.
Further, the high-capacity automatic pump assembly comprises a first reversing valve and a first titration pump, the first reversing valve is connected with a first reversing valve pipette and a first reversing valve liquid sending pipe, the first reversing valve pipette is communicated with the titration liquid container, and the first reversing valve liquid sending pipe is communicated with the solution bottle to be titrated. Wherein, the pipette may be a tetrafluoride tube.
Further, the first reversing valve and the first titration pump are mounted on a front plate of a housing of the high-capacity automatic pump assembly.
Furthermore, the first reversing valve is connected with a first valve body motor, and the first valve body motor is electrically connected with the controller component.
Still further, the first valve motor is mounted to a top plate of the housing of the high capacity automatic pump assembly.
Furthermore, the first titration pump is connected with a first stepping motor, and the first stepping motor is electrically connected with the controller assembly.
Further, the first stepping motor is mounted on a side plate of a housing of the high-capacity automatic pump assembly.
Adopt above-mentioned technical scheme, the application of a plurality of valve pipelines has been avoided in the use of switching-over valve for simple structure, direction through the switching-over valve control pipeline, if absorb solution or titrate solution, when needs absorb solution, the controller subassembly sends on ordering to the valve body motor, carry out corresponding action and make the switching-over valve switched to and absorb the position, then step motor drives the piston rod downstream of titrating the pump, absorb solution, when titrating solution, the switching-over valve redirecting, step motor upward movement extrudes solution (titrates).
Further, high accuracy automatic pump package spare includes second switching-over valve and second titration pump, be connected with second switching-over valve pipette and second switching-over valve liquid sending pipe on the second switching-over valve, second switching-over valve pipette and titration liquid container intercommunication, second switching-over valve liquid sending pipe and waiting to titrate the solution bottle intercommunication.
Furthermore, the second reversing valve and the second titration pump are arranged on a front plate of the box body of the high-precision automatic pump assembly.
Furthermore, the second reversing valve is connected with a second valve body motor, and the second valve body motor is electrically connected with the controller component.
Further, the second valve body motor is mounted on the top plate of the high-precision automatic pump assembly box body.
Furthermore, the second titration pump is connected with a second stepping motor, and the second stepping motor is electrically connected with the controller assembly.
Further, the second stepping motor is mounted on a side plate of the high-precision automatic pump assembly box body.
Further, the minimum titration amount of the second titration pump is 0.1ml.
With the above technical solution, the control of the second reversing valve to suck or titrate the solution is similar to the control of the high-capacity automatic pump assembly, but it is worth noting that the running speed of the second stepping motor can be slower than that of the first stepping motor through control, so that the titration is more accurate and can be 0.1ml. Specifically, the accurate control of the titration capacity is that the controller component calculates the stroke of the stepper motor according to the requirement, for example, 5ml can be titrated for the whole stroke of the stepper motor, and if 1500 steps are required for the stepper motor to complete the whole stroke, if 0.1ml needs to be titrated, the stepper motor needs to run for 30 steps, so that the accurate titration timing can be performed, and the second stepper motor can be controlled to run for 30 steps at regular intervals, and 0.1ml is titrated.
Further, the adjustable-speed cradle comprises a driving eccentric wheel and a tray which are connected with each other, the driving eccentric wheel is connected with the base through a bearing, the driving eccentric wheel is connected with a motor shaft of a speed reducing motor, the speed reducing motor is electrically connected with the controller assembly, the speed reducing motor is installed on a top plate of the base, a speed regulating assembly is installed on a bottom plate of the base and comprises a speed regulating plate and a transformer, and the speed regulating plate is electrically connected with the speed reducing motor and the transformer respectively. The tray can be rocked by driving one driving eccentric wheel to rotate by adopting the speed reducing motor, and the tray is simple in structure and easy to maintain and overhaul. The current can be converted into adaptive voltage to supply power through the transformer, the linear speed or the angular speed is controlled through the speed regulating plate so as to control the rotating speed, and the motor shaft is connected with the tray through the driving eccentric wheel to realize the rotation action and achieve the purpose of controlling the speed and shaking uniformly.
Further, the adjustable-speed cradle further comprises driven eccentric wheels which are connected with the tray and the base. The stability of tray can be increased to the setting of driven eccentric wheel.
Further, the number of the driven eccentric wheels is two. The two driven eccentric wheels and the driving eccentric wheel form a triangular support structure with the best stability, so that the tray is stable enough no matter the tray is static or rotates horizontally, the solution to be measured in the solution bottle to be titrated or the titrating solution is not spilled, and the accuracy of the result is not influenced.
Furthermore, the gyration radius of the adjustable-speed cradle is 11mm.
Furthermore, the rotating speed of the speed-adjustable cradle is 0-210r/min.
Furthermore, be equipped with the montant on the tray, the montant top is fixed with first horizontal pole, it has the hole of grafting and fixed tee bend to open on the first horizontal pole, the tee bend is used for connecting simultaneously first switching-over valve liquid feeding pipe among the high capacity automatic pump subassembly with second switching-over valve liquid feeding pipe among the high accuracy automatic pump subassembly, and the tee bend intercommunication the solution bottle of waiting to titrate. The connecting mode ensures that the tee joint and the pipeline are easy to replace, and the test result is correct. Preferably, the circle center of one port of the tee joint is opposite to the circle center of the bottom end of the solution bottle to be titrated.
Furthermore, a second cross rod is fixed on the vertical rod below the first cross rod, and a clamping ring for fixing the bottle mouth of the solution bottle to be titrated is arranged on the second cross rod. This setting makes and treats that to titrate the solution bottle bottleneck and be fixed in the below of tee bend, avoids shaking even and causes the skew of treating to titrate the solution bottle bottleneck when rocking for titrate the liquid drop regularly misplace and drip outside the bottle, influence the result accuracy.
Furthermore, be equipped with the recess on the tray for make wait to titrate the solution bottle and be embedded into to the tray on, its bottom translation on the tray when avoiding rocking causes to titrate the liquid drop and regularly misplaces and drip outside the bottle, influences the result accuracy.
Further, the number of the solution bottles to be titrated is two. The bottle of the solution to be titrated is preferably a bottle with a small opening and a large capacity, and can be a conical bottle.
Furthermore, the first reversing valve comprises two liquid sending pipes, namely a first liquid sending pipe and a second liquid sending pipe. Wherein, the first liquid sending pipe and the second liquid sending pipe can be a tetrafluoride pipe.
Further, the second direction valve liquid sending pipe has two liquid sending pipes, which are a third liquid sending pipe and a fourth liquid sending pipe. Wherein, the third liquid sending pipe and the fourth liquid sending pipe can be a tetrafluoride pipe.
Further, the number of the tee joints is two. The tee joint is preferably a disposable tee joint, so that the replacement is convenient, and the accuracy of titration at each time is ensured.
Still further, the number of the grooves is two.
By adopting the technical scheme, when the number of the related devices such as the solution bottles to be titrated is two, one part of solution is equivalently filled into the two solution bottles to be titrated without frequently replacing the devices, the average value is obtained, and the accuracy of the measurement result is improved. And the component titration device can record and calculate the total titration amount through the controller component after undergoing the first titration, the second titration amount can be estimated according to the first titration amount during the second titration, and the estimated titration amount is directly input into the component titration device and is subjected to relevant setting, for example, the set integral capacity part is operated through the high-capacity automatic pump assembly, and the decimal part is operated through the high-precision automatic pump assembly. The titration capacity is set to an integer when rapid titration is required, to a decimal number when accurate titration is required, and to a minimum of 0.1ml. Due to the pre-estimation setting and the test operation of the second time, the accuracy and the efficiency of the whole test are improved.
Further, the component titration apparatus further comprises a display screen.
Further, the display screen is a 2.8-inch touch screen and is mounted on the base. The touch panel is arranged so that all titration operations are performed by the touch panel.
Further, the component titration apparatus further comprises a protective outer box body, the base is fixed in the protective outer box body, one side of the protective outer box body is connected with one side of the upper cover body through a lock catch, and the other side of the protective outer box body is hinged with the other side of the upper cover body through a hinge.
Furthermore, the lock catch comprises a buckle fixedly arranged on the upper cover body and a lock nose fixedly arranged on the protective outer box body, and the buckle is buckled on the lock nose and is locked through an external lock. The lock catch can also be any other lock piece which can lock the protective outer box body and the upper cover body, such as other common existing coded locks, key locks and the like.
Furthermore, a first handle is arranged on one side face, close to the lock catch, of the upper cover body, and a second handle is arranged on one side face, close to the hinge, of the upper cover body. The setting of the first handle is convenient for the rotation of the upper cover body around the hinge after unlocking, and the setting of the second handle is convenient for the carrying and transportation of the locked box body.
Furthermore, a white board is arranged on the inner wall of the protective outer box body and is arranged on one side close to the solution bottle to be titrated.
Furthermore, an illuminating lamp is arranged on the inner wall of the protective outer box body and is arranged at one side close to the solution bottle to be titrated. The white board and the illuminating lamp are arranged, so that the indicator can be observed conveniently, the titration end point can be accurately controlled, and the accuracy of the titration result can be improved. Especially, the illuminating lamp can be turned on to provide illumination when the light is not ideal, so that the observation and the operation are convenient. The light and controller subassembly electric connection are controlled by the controller subassembly, and the controller subassembly includes power, circuit board etc. and the power can be mobile power source such as battery also can be power plug, contains the controller on the circuit board, and the controller can be the singlechip.
Furthermore, the component titration apparatus further comprises a start-up control button and a speed-regulating knob mounted on the base. The starting control button is electrically connected with the controller component, and the speed regulating knob is electrically connected with the speed regulating plate. All electrical connections in the present invention are general power-on connections, and are implemented by circuit connections such as wires in the prior art.
The invention has the advantages and positive effects that:
1. the titration device comprises main components such as a high-capacity automatic pump assembly, a high-precision automatic pump assembly, an adjustable-speed cradle, a control circuit and the like, can realize accurate quantitative titration and uniform mixing, ensures that the titration result is accurate and reliable, titrates while shaking uniformly during titration, quickly titrates in an early stage, titrates slowly in a later stage, improves the efficiency and simultaneously ensures that the titration is accurate. In addition, the cradle is adjustable speed, can cooperate with titration speed, is suitable for the mixing of different viscosity material, improves and titrates the accuracy.
2. The titration device integrates the automatic pump assembly, the speed-adjustable cradle, the illuminating lamp, the white board, the protective outer box body and the like, has the advantages of stable and reliable protection, portability, more applicable scenes, convenience in observation, less glassware, and the like, greatly simplifies the manual operation steps in the titration process, and reduces the operation difficulty. By using the 2.8-inch touch screen, the display result is visually presented, and the touch operation is convenient and quick. When the number of the related devices such as the solution bottles to be titrated is two, one part of solution is equivalently filled into the two solution bottles to be titrated without frequently replacing the devices, the average value is obtained, and the accuracy of the measurement result is improved.
3. The titration apparatus of the present invention, size: length, width and height 40X 34X 35cm, titration resolution: 0.1ml, liquid volume accuracy: error is less than or equal to 1%, liquid quantity accuracy: the repeatability error is less than or equal to 3-5 per mill, and the working environment temperature is as follows: 5-55 ℃, relative humidity of operation: is less than 80 percent.
Drawings
FIG. 1 is a block diagram of an efficient and accurate component titration apparatus according to the present invention;
FIG. 2 is a control block diagram of an efficient and accurate component titration apparatus according to the present invention;
FIG. 3 is a partial view of an efficient and accurate component titration apparatus of the present invention in an open position;
FIG. 4 is a structural diagram of an upper cover of a high-efficiency and accurate component titration apparatus according to the present invention;
FIG. 5 is a partial view of the test state of an efficient and accurate component titration apparatus according to the present invention;
FIG. 6 is a partial cross-sectional view of an adjustable speed cradle of a high efficiency, precision component titration apparatus of the present invention;
FIG. 7 is a structural diagram of a driving eccentric wheel in the efficient and accurate component titration apparatus according to the present invention;
FIG. 8 is a cross-sectional view of the active eccentric wheel of the efficient and accurate component titration apparatus of the present invention;
in the figure: 1. a base; 2. a high capacity automatic pump assembly; 201. a first direction changing valve; 202. a first titration pump; 203. a first reversing valve pipette; 204. a first liquid sending pipe; 205. a second liquid sending pipe; 206. a first valve body motor; 207. a first stepper motor; 3. a high precision automatic pump assembly; 301. a second directional control valve; 302. a second titration pump; 303. a second reversing valve pipette; 304. a third liquid sending pipe; 305. a fourth liquid sending pipe; 306. a second valve body motor; 307. a second stepping motor; 4. a speed adjustable cradle; 401. a driving eccentric wheel; 402. a tray; 403. a reduction motor; 404. a driven eccentric wheel; 405. a vertical rod; 406. a second cross bar; 407. a first cross bar; 408. a snap ring; 409. a groove; 5. a solution bottle to be titrated; 6. a tee joint; 7. a display screen; 8. a protective outer box; 9. locking; 10. a speed regulation component; 11. an upper cover body; 12. a first handle; 13. a second handle; 14. a hinge; 15. a white board; 16. a lighting lamp; 17. a power-on control button; 18. a speed regulation knob; 19. a controller assembly; 20. a titration liquid container.
Detailed Description
The following detailed description of the embodiments of the invention refers to the accompanying drawings.
Example 1
The utility model provides a high-efficient accurate component titration outfit, as shown in fig. 1, 2, is equipped with high capacity automatic pump package spare 2, high accuracy automatic pump package spare 3 and the adjustable speed cage 4 through controller subassembly 19 electrical control on the base 1, and the adjustable speed cage is last 4 to be put and is waited to titrate solution bottle 5, waits to titrate solution bottle 5 and high capacity automatic pump package spare 2 and high accuracy automatic pump package spare 3 all through the pipeline intercommunication.
The working principle is as follows: when the solution in the solution bottle 5 to be titrated needs to be titrated, the controller assembly 19 firstly controls the adjustable-speed cradle 4 to shake, and meanwhile, the high-capacity automatic pump assembly 2 performs rapid titration, it needs to be noted that the rapid titration is that the titration solution does not flow into a water line or water injection, but a rapid drop drops, the indicator condition is observed after a certain dosage and time are titrated, the operation of the high-capacity automatic pump assembly 2 is stopped so that the rapid titration is stopped, the controller assembly 19 then controls the high-precision automatic pump assembly 3 to perform slow titration, and the titration is stopped when the indicator needs to change.
This technical scheme can enough be when autotitrating the limit and shake the mixing, can also titrate fast earlier stage, and the later stage is titrated slowly, greatly reduced the operation degree of difficulty, promoted experiment degree of accuracy and efficiency. Because the automatic titration and the shaking up mode are adopted, the difficulty of manual operation is avoided, the operation difficulty is reduced, the operation accuracy is improved, the titration and the shaking up are carried out simultaneously when the titration is carried out, the special shaking up time after the titration is saved, the experimental efficiency is greatly improved, the early-stage rapid titration and the later-stage slow titration can be carried out, the titration time is shortened while the titration accuracy is ensured, and the experimental efficiency is improved.
Example 2
The utility model provides a high-efficient accurate component titration outfit, is equipped with high capacity automatic pump package spare 2, high accuracy automatic pump package spare 3 and the adjustable speed cage chair 4 through 19 electrical control of controller subassembly on the base 1, and 4 overhead stay titrate solution bottle 5 on the adjustable speed cage chair, wait to titrate solution bottle 5 with high capacity automatic pump package spare 2 and high accuracy automatic pump package spare 3 all through the pipeline intercommunication. Except for the same portions as in example 1 above, the following were also made:
as shown in fig. 3, the component titration apparatus further comprises a display 7, the display 7 being a 2.8 inch touch screen and mounted on the base 1. The touch panel is arranged so that all titration operations are performed by the touch panel.
As shown in fig. 3 and 4, the component titration apparatus further includes a protective outer box 8, the base 1 is fixed in the protective outer box 8, one side of the protective outer box 8 is connected to one side of the upper cover 11 through the latch 9, and the other side is hinged to the other side of the upper cover 11 through the hinge 14. The lock 9 includes a buckle fixed on the upper cover 11 and a lock nose fixed on the protective outer box 8, and the buckle is buckled on the lock nose and locked by an external lock (not shown in the figure).
As shown in fig. 4, a first handle 12 is provided on one side of the upper cover 11 close to the latch 9, and a second handle 13 is provided on one side of the upper cover 11 close to the hinge 14. The first handle 12 is arranged to facilitate rotation of the upper cover 11 around the hinge 14 after unlocking, and the second handle 13 is arranged to facilitate carrying and transportation of the locked box.
As shown in fig. 3, a white plate 15 is provided on the inner wall of the protective outer box 8, and the white plate 15 is provided on a side close to the solution bottle 5 to be titrated.
As shown in fig. 3, an illumination lamp 16 is provided on the inner wall of the protective outer case 8, and the illumination lamp 16 is provided on a side close to the solution bottle 5 to be titrated. The white board 15 and the illuminating lamp 16 are arranged to facilitate observation of the indicator, accurately control the titration end point and improve the accuracy of the titration result. Especially, when the light is not ideal, the illuminating lamp 16 can be turned on to provide illumination, so that the observation operation is convenient.
In this embodiment, with integrated together such as automatic pump subassembly, adjustable speed cage chair 4, blank 15, light 16 and the outer box 18 of protection, have the protection reliable and stable, portable, it is many to be suitable for the scene, observes conveniently, and glassware uses advantages such as less, has greatly simplified the manual operation step among the titration process, has reduced the degree of difficulty of operation. And a 2.8-inch touch screen is used, the display result is visually presented, and the touch operation is convenient and quick.
Example 3
An efficient and accurate component titration device is further provided on the basis of the embodiment 2, and comprises the following components:
as shown in fig. 5, the high capacity automatic pump assembly 2 includes a first change valve 201 and a first titration pump 202, the first change valve 201 is connected with a first change valve pipette 203 and a first change valve liquid feeding tube, the first change valve pipette 203 is communicated with the titration liquid container 20, and the first change valve liquid feeding tube is communicated with the bottle 5 of the solution to be titrated. Wherein the number of the solution bottles 5 to be titrated is two. There are also two first direction valve liquid sending pipes, a first liquid sending pipe 204 and a second liquid sending pipe 205. Specifically, the first direction valve 201 and the first fixed displacement pump 202 are mounted on the front plate of the case of the high-capacity automatic pump assembly 2. The first direction valve 201 is connected to the first valve motor 206, and the first valve motor 206 is electrically connected to the controller assembly 19. The first valve motor 206 is mounted to the top plate of the housing of the high capacity automatic pump assembly 2 (as shown in fig. 1). The first titration pump 202 is connected to a first stepper motor 207, and the first stepper motor 207 is electrically connected to the controller assembly 19. The first stepper motor 207 is mounted to a side plate of the housing of the high capacity automatic pump assembly 2 (as shown in fig. 1).
As shown in fig. 5, the high-precision automatic pump assembly 3 includes a second reversing valve 301 and a second titration pump 302, the second reversing valve 301 is connected to a second reversing valve pipette 303 and a second reversing valve liquid feeding tube, the second reversing valve pipette 303 is communicated with the titration liquid container 20, and the second reversing valve liquid feeding tube is communicated with the solution bottle 5 to be titrated. Wherein the minimum titration amount of the second titration pump 302 is 0.1ml. The second direction change valve liquid sending tubes are two, that is, a third liquid sending tube 304 and a fourth liquid sending tube 305. Specifically, the second selector valve 301 and the second titration pump 302 are mounted on the front plate of the housing of the high-precision automatic pump unit 3. The second direction valve 301 is connected to a second valve body motor 306, and the second valve body motor 306 is electrically connected to the controller assembly 19. The second valve body motor 306 is mounted to the top plate of the housing of the high precision automatic pump assembly 3 (as shown in figure 3). The second titration pump 302 is connected to a second stepper motor 307, and the second stepper motor 307 is electrically connected to the controller assembly 19. The second stepping motor 307 is mounted on a side plate of a case of the high-precision automatic pump assembly 3 (shown in fig. 3).
It should be noted that the use of the reversing valves in the high-capacity automatic pump assembly 2 and the high-precision automatic pump assembly 3 avoids the use of a plurality of valve pipelines, so that the structure is simple, the direction of the pipelines is controlled by the reversing valves, such as the suction of solution or the titration of solution, when the solution needs to be sucked, the controller assembly 19 sends a command to the valve body motor, corresponding action is performed to make the reversing valves switched to the suction position, then the stepping motor drives the piston rod of the titration pump to move downwards to suck the solution, when the solution is titrated, the reversing valves change direction, and the stepping motor moves upwards to extrude the solution for titration. The second stepper motor 307 is controllable to run slower than the first stepper motor to make the titration more accurate, which may be 0.1ml.
As shown in fig. 1, 3, and 5-8, the adjustable-speed cradle 4 includes a driving eccentric wheel 401 and a tray 402 that are connected to each other, the driving eccentric wheel 401 is connected to the base 1 through a bearing, the driving eccentric wheel 401 is connected to a speed reduction motor 403, the speed reduction motor 403 is electrically connected to the controller assembly 19, the speed reduction motor 403 is installed on a top plate of the base 1, a speed adjustment assembly 10 is installed on a bottom plate of the base 1, the speed adjustment assembly 10 includes a speed adjustment plate and a transformer, and the speed adjustment plate is electrically connected to the speed reduction motor 403 and the transformer, respectively. The adjustable-speed cradle 4 further comprises two driven eccentrics 404, both connected to the tray 402 and to the base 1. Specifically, the turning radius of the adjustable-speed cradle 4 is 11mm. The rotating speed of the adjustable-speed cradle 4 is 0-210r/min.
It is worth noting that the tray 402 can shake by driving one driving eccentric 401 wheel to rotate by adopting a speed reduction motor, and the tray is simple in structure and easy to maintain and overhaul. The current can be converted into adaptive voltage to supply power through the transformer, the linear velocity or the angular velocity is controlled through the speed regulating plate so as to control the rotating speed, and the motor shaft is connected with the tray 402 through the active eccentric 401 to realize the rotation action and achieve the purpose of controlling the speed and shaking uniformly. The two driven eccentric wheels 404 and the driving eccentric wheel 401 form a triangular support structure with the best stability, so that the tray 402 is stable enough no matter the tray is static or rotates horizontally, and the solution to be measured or the titration liquid in the solution bottle 5 to be titrated can not be spilled, thereby influencing the accuracy of the result.
As shown in fig. 1, 3 and 5, a vertical rod 405 is arranged on the tray 402, a first cross rod 407 is fixed at the top end of the vertical rod 405, a hole for inserting and fixing a tee joint 6 is formed in the first cross rod 407, the tee joint 6 is used for simultaneously connecting a first reversing valve liquid feeding pipe in the high-capacity automatic pump assembly 2 and a second reversing valve liquid feeding pipe in the high-precision automatic pump assembly 3, and the tee joint 6 is communicated with the solution bottle 5 to be titrated. The tee joint 6 and the pipeline are easy to replace by the connection mode, and the test result is guaranteed to be correct. The number of the tee joints 6 is two, and the center of a circle of a port of the tee joint 6 is opposite to the center of a circle of the bottom end of the solution bottle 5 to be titrated.
As shown in fig. 1, 3 and 5, a second cross bar 406 is fixed on the vertical bar 405 below the first cross bar 407, and a snap ring 408 for fixing the mouth of the solution bottle 5 to be titrated is arranged on the second cross bar 406. This setting makes 5 bottleneck of waiting to titrate solution bottle be fixed in the below of tee bend 6, avoids shaking even and causes the skew of waiting to titrate 5 bottleneck of solution bottle when rocking for titrate the liquid drop regularly the dislocation and drip outside the bottle, influence the result accuracy.
As shown in fig. 5 and 6, a groove 409 is formed in the tray 402 for inserting the bottle 5 of the solution to be titrated into the tray, so as to prevent the bottom of the bottle from translating on the tray, which may cause the titration liquid drops to drop outside the bottle in a staggered manner at regular time, thereby affecting the accuracy of the result. The number of the grooves 409 is two.
As further shown in FIG. 5, the component titration apparatus further includes a power-on control button 17 and a speed knob 18 mounted on the base 1.
In this embodiment, when the number of the related devices such as the solution bottle to be titrated 5 is two, one part of the solution is equivalently filled into the two solution bottles to be titrated 5 without frequently replacing the devices, and the average value is obtained, so that the accuracy of the measurement result is improved. Also, the second titration period may be estimated based on the first titration amount and associated settings are made, for example, when the set integral part of the volume is operated by the high-volume automatic pump unit 2 and the fractional part is operated by the high-precision automatic pump unit 3. The titration capacity is set to an integer when rapid titration is required, to a decimal number when accurate titration is required, and to a minimum of 0.1ml. Due to the fact that the pre-estimation setting and the test operation of the second time are carried out, the accuracy and the efficiency of the whole test are improved.
The use and titration method of a high-efficiency and accurate component titration device comprises the following steps:
s1: when the start-up control button 17 is pressed, the component titration device starts to be powered on (a red indicator light can be set, and the red indicator light is turned on as a start-up success signal), all components of the component titration device can be self-tested after being started up, and the first reversing valve 201 and the second reversing valve 301 are switched to the liquid inlet;
s2: connecting line and line evacuation
Firstly, two tee joints 6 are respectively inserted and fixed in two holes of a first cross rod 407, then one end of a first reversing valve pipette 203 is connected with one port of a first reversing valve 201, the other end of the first reversing valve pipette is connected with and extends into the bottom of a titration liquid container 20, one end of a first liquid sending pipe 204 and one end of a second liquid sending pipe 205 are respectively connected with the other two ports of the first reversing valve 201, one port of one tee joint 6 is connected with the other end of the first liquid sending pipe 204, and one port of the other tee joint 6 is connected with the other end of the second liquid sending pipe 205; then, one end of the second reversing valve pipette 303 is connected with one port of the second reversing valve 301, the other end is connected with and extends into the bottom of the titration liquid container 20, one end of the third liquid sending pipe 304 and one end of the fourth liquid sending pipe 305 are respectively connected with the other two ports of the second reversing valve 301, one port of one tee joint 6 is connected with the other end of the third liquid sending pipe 304, and one port of the other tee joint 6 is connected with the other end of the fourth liquid sending pipe 305;
finally, after the pipeline is connected, before the titration is formally started, the titration is started, air in the inner opening of the pipeline is discharged, so that the titration solution is filled in the whole pipeline and liquid drops drop down from a needle (not shown in the figure) (the process can be repeated for 4-5 times, and the length of the pipeline is determined);
s3: titration
Step one, pouring the solution to be titrated into two solution bottles 5 to be titrated in equal quantity, placing the solution bottles 5 to be titrated into a groove 409 on a tray 402, and clamping the bottle mouth of the solution bottles 5 to be titrated by a clamping ring 408;
in the second step, after the operation screen on the display screen 7 sets the required titration volume, the controller module 19 will automatically calculate the required titration amount, and the first titration pump 202 and the second titration pump 302 will draw the corresponding titration liquid volume (generally, the drawing amount is larger than the titration amount), and then perform the first titration on a to-be-titrated solution bottle 5. When the titration is started, the controller component 19 starts the adjustable-speed cradle 4 to shake, meanwhile, the first titration pump 202 quickly titrates the integer volume, in the process, the rotation speed of the adjustable-speed cradle 4 can be adjusted through the speed adjusting knob 18 (such as leftward rotation deceleration and rightward rotation acceleration, the specific speed adjustment is set according to the viscosity of the liquid to be measured and the actual situation), after the titration of the integer volume titration liquid is finished, the first titration pump 202 stops quick titration, the second titration pump 302 starts slow titration, fractional titration is executed, the titration volume can be 0.1ml at the minimum, in the process, the change of the indicator is observed at any time, the titration is stopped at any time or increased, after the indicator reaches the change requirement, the titration action of the first time stops, and the screen can display the total volume of the current titration;
thirdly, setting a second titration total amount on the display screen 7 according to the first titration total amount, repeating the titration action on a second solution bottle 5 to be titrated, continuing the titration operation, stopping the second titration action, and displaying the current titration total amount and the average value of the two titration amounts on the screen.
While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention and should not be taken as limiting the scope of the invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.
Claims (10)
1. The utility model provides a high-efficient accurate component titration outfit, its characterized in that is equipped with high capacity automatic pump package spare (2), high accuracy automatic pump package spare (3) and adjustable speed cage chair (4) through controller subassembly (19) electric control on base (1), but the speed adjusting cage chair is gone up (4) and is put and to wait to titrate solution bottle (5), wait to titrate solution bottle (5) with high capacity automatic pump package spare (2) and high accuracy automatic pump package spare (3) all communicate through the pipeline.
2. An efficient and accurate component titration device according to claim 1, wherein the high capacity automatic pump assembly (2) and the high accuracy automatic pump assembly (3) each comprise a reversing valve and a titration pump, a reversing valve pipette and a reversing valve liquid feeding tube are connected to the reversing valve, the reversing valve pipette is communicated with a titration liquid container (20), and the reversing valve liquid feeding tube is communicated with the bottle (5) of the solution to be titrated.
3. An efficient and accurate component titration device according to claim 2, characterized in that the minimum titration amount of the titration pump in said high accuracy automatic pump assembly (3) is 0.1ml.
4. An efficient and accurate component titration device according to claim 2, wherein the number of the solution bottles (5) to be titrated is two, and the number of the liquid sending tubes of the reversing valve is four.
5. A high efficiency and accurate component titration device according to claim 1, wherein the radius of gyration of the adjustable speed cradle (4) is 11mm.
6. A highly efficient and accurate component titration device according to claim 1, wherein the speed of rotation of the adjustable speed cradle (4) is 0-210r/min.
7. An efficient and accurate component titration device according to claim 1, wherein the adjustable speed cradle (4) comprises a driving eccentric (401) and a tray (402) connected to each other, the driving eccentric (401) is connected to the base (1) through a bearing, the driving eccentric (401) is connected to a speed reduction motor (403), the speed reduction motor (403) is electrically connected to the controller assembly (19), the speed reduction motor (403) is installed on the top plate of the base (1), a speed regulation assembly (10) is installed on the bottom plate of the base (1), the speed regulation assembly (10) comprises a speed regulation plate and a transformer, and the speed regulation plate is electrically connected to the speed reduction motor (403) and the transformer respectively.
8. A high efficiency and accurate component titration device according to claim 1, wherein said adjustable speed cradle (4) further comprises two driven eccentrics (404) connected to both said tray (402) and said base (1).
9. A high-efficiency and accurate component titration apparatus according to claim 7 or 8, wherein a vertical rod (405) is provided on the tray (402), a first cross rod (407) is fixed on the top end of the vertical rod (405), a hole for inserting and fixing a tee joint (6) is provided on the first cross rod (407), the tee joint (6) is used for connecting the high capacity automatic pump assembly (2) and the reversing valve liquid feeding tube in the high accuracy automatic pump assembly (3) at the same time, and the tee joint (6) is communicated with the bottle (5) of the solution to be titrated;
a second cross rod (406) is fixed on the vertical rod (405) below the first cross rod (407), and a snap ring (408) for fixing the bottle mouth of the solution bottle (5) to be titrated is arranged on the second cross rod (406);
the tray (402) is provided with a groove (409) for enabling the solution bottle (5) to be titrated to be inserted into the tray (402).
10. A high efficiency and accurate component titration device according to claim 1, wherein said component titration device further comprises a display screen (7) mounted on said base (1);
the base (1) is fixed in the protective outer box body (8), one side of the protective outer box body (8) is connected with one side of an upper cover body (11) through a lock catch (9), and the other side of the protective outer box body is hinged to the other side of the upper cover body (11) through a hinge (14);
go up lid (11) and be close to be equipped with first handle (12) on one side of hasp (9), go up lid (11) and be close to be equipped with second handle (13) on one side of hinge (14).
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| CN202211186580.9A CN115586297A (en) | 2022-09-27 | 2022-09-27 | Efficient and accurate component titration device |
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| CN202211186580.9A CN115586297A (en) | 2022-09-27 | 2022-09-27 | Efficient and accurate component titration device |
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