CN218098989U - PH value survey device is used in laboratory - Google Patents
PH value survey device is used in laboratory Download PDFInfo
- Publication number
- CN218098989U CN218098989U CN202221642885.1U CN202221642885U CN218098989U CN 218098989 U CN218098989 U CN 218098989U CN 202221642885 U CN202221642885 U CN 202221642885U CN 218098989 U CN218098989 U CN 218098989U
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- base
- stirring
- sample liquid
- cup
- electrode
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- 238000003756 stirring Methods 0.000 claims abstract description 48
- 239000007788 liquid Substances 0.000 claims abstract description 34
- 239000002585 base Substances 0.000 claims abstract description 24
- 230000002572 peristaltic effect Effects 0.000 claims abstract description 24
- 239000002253 acid Substances 0.000 claims abstract description 11
- 239000003513 alkali Substances 0.000 claims abstract description 11
- 238000012546 transfer Methods 0.000 claims abstract description 8
- 230000008676 import Effects 0.000 claims abstract description 4
- 238000013494 PH determination Methods 0.000 claims description 5
- 125000003003 spiro group Chemical group 0.000 claims description 3
- 238000001139 pH measurement Methods 0.000 abstract description 3
- 239000000243 solution Substances 0.000 description 9
- 238000001802 infusion Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000003814 drug Substances 0.000 description 3
- 239000007853 buffer solution Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 239000012071 phase Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000003916 acid precipitation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- -1 hydrogen ions Chemical class 0.000 description 1
- GPRLSGONYQIRFK-UHFFFAOYSA-N hydron Chemical compound [H+] GPRLSGONYQIRFK-UHFFFAOYSA-N 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
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- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
The utility model relates to an experimental apparatus, in particular to a pH value measuring device for a laboratory, which comprises a base, a plurality of upright columns uniformly distributed on the base, a top plate horizontally arranged, an electrode for measuring the pH value, a stirring device and a peristaltic pump; the sample liquid cup and the acid-base cup are placed on the base, and the top plate is supported by the upright post and is positioned above the base; electrode, agitating unit and peristaltic pump are installed respectively on the roof, the electrode lower extreme stretches into in the sample liquid cup, agitating unit is used for the sample liquid in the stirring sample liquid cup, be equipped with the transfer line on the peristaltic pump, the import of this transfer line is inserted and is put in acid-base cup, export and install on the roof in order to add acid or alkali in the sample liquid cup. The motor drives to realize stirring, and is more uniform, and the peristaltic pump is adopted to add acid or alkali into the sample liquid, so that the working efficiency and the accuracy of the measuring result are improved. The non-contact operation can be realized by stirring, PH measurement, sample addition and the like, and the safety of experimenters is ensured.
Description
Technical Field
The utility model relates to an experimental device specifically is a pH value survey device is used in laboratory.
Background
The acidimeter is a common instrument used to measure the pH of a liquid medium and is capable of selectively responding to the activity of hydrogen ions in the solution. Theoretically, the acidity of a solution can be measured by: and measuring the electromotive force of the battery by using a working battery consisting of a reference electrode, an indicating electrode and a solution, and comparing the electromotive force of the battery consisting of standard buffer solutions by using the standard buffer solutions with known pH values as a reference so as to obtain the pH value of the solution to be tested.
The composite electrode is widely used, and when in measurement, the composite electrode is inserted into a solution to be measured, different electromotive forces are generated due to different acidity (hydrogen ion concentration) of the solution to be measured, the electromotive forces are amplified by a direct current amplifier, and finally, the pH value of the solution to be measured is read by a reading indicator (voltmeter). The common acidimeters are desk type, portable type, pen type and the like, and the reading indicators are digital type and pointer type. The acidimeter is applied to various fields of environmental protection, medicine, food, sanitation, geological prospecting, metallurgy, ocean exploration and the like. Common acid rain detection, surface water, industrial wastewater, drinking water and the like are subjected to pH measurement.
At present, a pH meter in a medicine detection laboratory is mainly used for measuring the pH value of a medicine and adjusting the pH value in the process of preparing a mobile phase, acid or alkali needs to be manually added every time in the process of adjusting the pH value of the mobile phase, a glass rod is used for stirring uniformly, whether the pH value meets the requirement is measured, and the pH value is repeatedly added until the required pH value is reached. The long-time stirring is easy to splash the corrosive solution onto the experimenter to cause injury; the experiment process is complicated and the time consumption is long due to the fact that acid or alkali is added for multiple times, and the working efficiency is reduced.
Disclosure of Invention
In order to solve the problem, the utility model provides a pH value survey device is used in laboratory adds acid/alkali through the peristaltic pump control, the utility model discloses a technical scheme as follows:
a pH value measuring device for a laboratory comprises a base, a plurality of upright columns uniformly distributed on the base, a horizontally arranged top plate, an electrode for measuring the pH value, a stirring device and a peristaltic pump; the sample liquid cup and the acid-base cup are placed on the base, and the top plate is supported by the upright post and is positioned above the base;
electrode, agitating unit and peristaltic pump are installed respectively on the roof, the electrode lower extreme stretches into in the sample liquid cup, agitating unit is used for the sample liquid in the stirring sample liquid cup, be equipped with the transfer line on the peristaltic pump, the import of this transfer line is inserted and is put in acid-base cup, export and install on the roof in order to add acid or alkali in the sample liquid cup.
Above-mentioned pH value survey device is used in laboratory, agitating unit includes gear motor, connecting rod and stirring rod, gear motor's output shaft, lower extreme connection stirring rod are connected to the upper end of connecting rod, the lower extreme of stirring rod is equipped with the horizontally stirring horizontal pole that the several circumference was evenly arranged, be equipped with vertical stirring montant on the stirring horizontal pole.
Above-mentioned laboratory is with pH value survey device, can dismantle with fastening bolt between stirring rod and the connecting rod and be connected.
Above-mentioned laboratory is with pH value survey device, the stand is the spiral telescopic link.
Above-mentioned pH value survey device is used in laboratory, be equipped with the adjusting collar of vertical setting on the roof, the adjusting collar surface is equipped with the screw thread in order to with the roof spiro union, the electrode is inserted and is put in the adjusting collar.
The beneficial effects of the utility model are that:
firstly, motor drive realizes the stirring, and is more even to adopt the peristaltic pump to add acid or alkali in the appearance liquid, improve work efficiency and measuring result's accuracy. The non-contact operation can be realized by stirring, pH measurement, sample adding and the like, and the safety of experimenters is ensured.
And secondly, the height of the top plate is adjustable, so that the sample cup can be suitable for sample cups with different heights.
And thirdly, the electrodes are inserted on the top plate, and the height is adjusted through the adjusting sleeve, so that the electrode is suitable for liquid levels with different heights in the sample liquid cup.
Drawings
Fig. 1 is a perspective view of the present invention;
fig. 2 is a schematic front view of the present invention;
fig. 3 is a sectional schematic view of the present invention;
fig. 4 is a schematic view of the stirring rod of the present invention.
In the figure: 1-base, 11-power switch, 12-stirring switch, 13-display screen, 14-key, 2-upright column, 3-top plate, 31-adjusting sleeve, 32-hanging block, 4-electrode, 5-speed reducing motor, 51-fastening bolt, 6-stirring rod, 7-peristaltic pump, 8-dropper, 9-sample liquid cup and 10-acid-base cup.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings. In fig. 1 to 3, the base 1, the electrode 4, the reduction motor 5, the peristaltic pump 7 and other energizing connections are omitted, but those skilled in the art will clearly know the connections and methods of use of the components based on common general knowledge and component specifications.
The embodiment is a pH value measuring device for a laboratory, which comprises a base 1, a plurality of upright columns 2 uniformly distributed on the base 1, a horizontally arranged top plate 3, an electrode 4 for measuring the pH value, a stirring device and a peristaltic pump 7; a sample liquid cup 9 and an acid-base cup 10 are placed on the base 1, and the top plate 3 is supported by the upright posts 2 and is located above the base 1.
Electrode 4, agitating unit and peristaltic pump 7 are installed respectively on roof 3, 4 lower extremes of electrode stretch into in the sample liquid cup 9, agitating unit is used for the sample liquid in the stirring sample liquid cup 9, be equipped with the transfer line on the peristaltic pump 7, the import of this transfer line is inserted and is put in acid-base cup 10, export and install on roof 3 in order to add acid or alkali in the sample liquid cup 9, can connect burette 8 in the exit. After the infusion tube is used, the infusion tube at the inlet end can be pulled upwards to wind the hanging block 32, so that potential safety hazards caused by overlong infusion tube are avoided.
Electrode 4, peristaltic pump 7 all directly purchase current product, purchase current electrical control element such as circuit board, plug to and purchase current acidimeter host computer or constitute each components and parts of host computer, connect etc. install its integration in base 1, like button 14, display screen 13 that are used for showing pH value, stirring switch 12 that is used for controlling agitating unit to open and stop for being used for controlling electrode 4. A general power switch 12 is arranged on the base 1, and power supplies of the electrode 4, the stirring device and the peristaltic pump 7 are all provided by the base 1. The peristaltic pump 7 adopts a quantitative peristaltic pump with a display screen and a control button, and the dosage of the acid or the alkali is directly controlled by the control button or a matched infrared remote controller when the peristaltic pump is used.
The stirring device comprises a speed reducing motor 5, a connecting rod and a stirring rod 6, wherein the upper end of the connecting rod is connected with an output shaft of the speed reducing motor 5, and the lower end of the connecting rod is connected with the stirring rod 6. For stirring more fully, the lower extreme of stirring rod 6 is equipped with the horizontally stirring horizontal pole that the several circumference was evenly arranged, be equipped with vertical stirring montant on the stirring horizontal pole.
The stirring rod 6 is detachably connected with the connecting rod through a fastening bolt 51, and the stirring rods 6 of different types are convenient to clean and replace.
The stand 2 is spiral telescopic link, can adjust the height of roof 3, and the getting of the sample liquid cup 9 of being convenient for is put.
Be equipped with the adjusting collar 31 of vertical setting on the roof 3, adjusting collar 31 surface is equipped with the screw thread in order to block with 3 spiro couplings of roof, electrode 4 is inserted and is put in adjusting collar 31, and electrode 4's upper end is big than adjusting collar 31's internal diameter and can be blocked. The height of the electrode 4 can be adjusted by screwing the adjusting sleeve 31 to adapt to the liquid level in the sample cup 9.
When the device is used, the sample liquid cup 9 is placed on the base 1, the power switch 11 is turned on, the stirring rod 6 is installed, the electrode 4 is inserted on the adjusting sleeve 31, the lower end of the electrode 4 and the stirring rod 6 extend into the sample liquid in the sample liquid cup 9, then the stirring switch 12 is pressed down, the speed reduction motor 5 drives the stirring rod 6 to rotate and stir, the button 14 for pH determination is started, the pH value is read through the display screen 13, the acid-base cup 10 for containing acid or alkali is selected to be placed on the base 1 according to the pH value, and the inlet end of the infusion tube of the peristaltic pump 7 is inserted in the acid-base cup 10; the peristaltic pump 7 is operated to quantitatively deliver the liquid in the acid-base cup 10 to the dropper 8, the liquid is dropped into the sample liquid cup 9 until the pH value reaches the range of +/-2% of the required value and the reading is stable, and then the peristaltic pump 7 is closed. The device is easy and simple to handle, the practicality is strong, and solution mixes more evenly, and the testing result is more accurate, has improved the reliability of inspection testing result, has ensured operating personnel's safety.
Claims (5)
1. The utility model provides a pH value survey device is used in laboratory which characterized in that: comprises a base (1), a plurality of upright posts (2) uniformly distributed on the base (1), a top plate (3) horizontally arranged, an electrode (4) for measuring PH value, a stirring device and a peristaltic pump (7); a sample liquid cup (9) and an acid-base cup (10) are placed on the base (1), and the top plate (3) is supported by the upright column (2) and is positioned above the base (1);
electrode (4), agitating unit and peristaltic pump (7) are installed respectively on roof (3), electrode (4) lower extreme stretches into in sample liquid cup (9), agitating unit is used for the sample liquid in the stirring sample liquid cup (9), be equipped with the transfer line on peristaltic pump (7), the import of this transfer line is inserted and is put on acid-base cup (10), export and install on roof (3) in order to add acid or alkali in sample liquid cup (9).
2. The laboratory pH determination apparatus of claim 1, wherein: agitating unit includes gear motor (5), connecting rod and stirring rod (6), output shaft, the lower extreme of gear motor (5) are connected to the upper end of connecting rod connect stirring rod (6), the lower extreme of stirring rod (6) is equipped with the horizontally stirring horizontal pole that the several circumference was evenly arranged, be equipped with vertical stirring montant on the stirring horizontal pole.
3. The laboratory pH determination apparatus of claim 2, wherein: the stirring rod (6) is detachably connected with the connecting rod through a fastening bolt (51).
4. The laboratory pH determination apparatus of claim 1, wherein: the upright posts (2) are all spiral telescopic rods.
5. The laboratory pH determination apparatus of claim 1, wherein: be equipped with adjusting collar (31) of vertical setting on roof (3), adjusting collar (31) surface is equipped with the screw thread in order to with roof (3) spiro union, electrode (4) are inserted and are put in adjusting collar (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221642885.1U CN218098989U (en) | 2022-06-29 | 2022-06-29 | PH value survey device is used in laboratory |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221642885.1U CN218098989U (en) | 2022-06-29 | 2022-06-29 | PH value survey device is used in laboratory |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218098989U true CN218098989U (en) | 2022-12-20 |
Family
ID=84477970
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221642885.1U Expired - Fee Related CN218098989U (en) | 2022-06-29 | 2022-06-29 | PH value survey device is used in laboratory |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218098989U (en) |
-
2022
- 2022-06-29 CN CN202221642885.1U patent/CN218098989U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20221220 |