CN209280570U - A kind of acid base titration device - Google Patents
A kind of acid base titration device Download PDFInfo
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- CN209280570U CN209280570U CN201822044059.7U CN201822044059U CN209280570U CN 209280570 U CN209280570 U CN 209280570U CN 201822044059 U CN201822044059 U CN 201822044059U CN 209280570 U CN209280570 U CN 209280570U
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- acid base
- gravity sensor
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Abstract
The utility model relates to the technical fields of chemical products detection, relate more specifically to a kind of acid base titration device and titration method, including measuring cup, the first liquid-holding pipe, the second liquid-holding pipe and agitating device for stirring liquid in measuring cup, first liquid-holding pipe is equipped with the first liquid outlet positioned at measuring cup rim of a cup, and second liquid-holding pipe is equipped with the second liquid outlet positioned at measuring cup rim of a cup；It is equipped with first switch at first liquid outlet, is equipped with second switch at second liquid outlet；The bottom of first liquid-holding pipe is equipped with the first gravity sensor, and the bottom of second liquid-holding pipe is equipped with the second gravity sensor, and first gravity sensor, the second gravity sensor, agitating device are electrically connected with control device.The utility model is easy to operate, and whole process improves the accuracy of test result without artificial reading；By agitating device that liquid agitation in measuring cup is uniform during the test, labor intensity is low, and can be avoided the error for shaking lead to result manually.
Description
Technical field
The utility model relates to the technical fields of chemical products detection, more particularly, to a kind of acid base titration device.
Background technique
At present in the fields such as chemistry, biology, medicine, the operation of acid base titration is all essential.Traditional soda acid drop instrument makes
With more universal, as shown in Figure 1, including buret holder 4 and acid buret 1 and alkali formula drop on buret holder
Determine pipe 2, the lower section of acid buret 1 is equipped with the drippage that piston 5 controls acid solution, and the lower section of base buret 2 is controlled equipped with glass marble 6
The drippage of alkaline liquid places conical flask 3 in the lower section of acid buret 1 or base buret 2.When needing to measure hydrochloric acid solution
When concentration, prepare liquid is HCl solution, and titer is the NaOH solution of known concentration, and operation experiments process is as follows:
1, before starting test, first check acid buret 1 and base buret 2 whether leak, be washed with distilled water,
Titer and prepare liquid rinse are used again；
2, titer is injected base buret 2, until 0 scale hereinafter, gently squeeze glass marble 6, makes the sharp mouth point of pipe
Full of solution and bubble-free, intraluminal fluid face is then adjusted, keeps it in 0 or 0 or less a certain scale, and write down accurate reading；
3, prepare liquid injection is repeated to operate in step 2 in advance with the acid buret 1 of the solution rinse；
4,10.00mL prepare liquid is released from acid buret 1, injects conical flask 3, add 1~2 drop phenolphthalein solution；Then, gently
Titer is added dropwise in the light glass marble 6 that squeezes, and shaking conical flask 3 is sufficiently mixed solution, when seeing that being added 1 drips titer,
Solution reddens color, stops titration, accurately writes down the scale of buret liquid level of solution, and accurately acquires the body that titration spends titer
Product.
Then prepare liquid concentration is calculated according to C (A) * V (A)=C (B) * V (B), wherein C (A) is the concentration of prepare liquid, C
It (B) is the concentration of titer, V (A) is prepare liquid volume, and V (B) is the volume of titer.
However, there are shortcomings for this traditional acid base titration device: the too small cleaning of 1. burets is inconvenient；2. titration
It is cumbersome that Guan Tai little fills liquid；3. needing artificial error in reading larger；4. shaking is not easy uniformly to be easy to cause the error of result, labor manually
Fatigue resistance is big；5. titration end-point shuts down inconvenient control, and large labor intensity.
Utility model content
The purpose of the utility model is to overcome the deficiencies in the prior art, a kind of acid base titration device is provided, dress liquid is simple,
Easy to clean, reading data is accurate, electric stirring, labor intensity are low.
In order to solve the above technical problems, the technical solution adopted in the utility model is:
A kind of acid base titration device is provided, the first liquid-holding pipe including measuring cup, for containing prepare liquid, for containing mark
Second liquid-holding pipe of quasi- liquid and agitating device for stirring liquid in measuring cup, first liquid-holding pipe, which is equipped with, is located at measurement
First liquid outlet of cup rim of a cup, second liquid-holding pipe are equipped with the second liquid outlet positioned at measuring cup rim of a cup, the agitating device
Equipped with protruding into the stirring end below of liquid levels in measuring cup；First switch is equipped at first liquid outlet, described second goes out
Second switch is equipped at liquid mouth；The bottom of first liquid-holding pipe is equipped with the first gravity sensor, the bottom of second liquid-holding pipe
Portion is equipped with the second gravity sensor, and first gravity sensor, the second gravity sensor, agitating device are electrically connected with control dress
It sets.
The acid base titration device of the utility model is obtained in the first liquid-holding pipe by the first gravity sensor and contains prepare liquid
Real-time quality, the body for the prepare liquid being added in measuring cup can be calculated by expiring liquid quality and empty liquid quality according to the first liquid-holding pipe
Product；The real-time quality for containing titer in the second liquid-holding pipe is obtained by the second gravity sensor, and liquid is expired according to the second liquid-holding pipe
Quality and empty liquid quality can calculate the titer volume being added in measuring cup；In conjunction with the solution concentration of titer, can obtain
To the concentration of prepare liquid；Prepare liquid and titer are stirred by agitating device during the test, mixing is more uniformly and abundant.
The labor intensity of the utility model is low, and mixing uniformity is good；It can be avoided error caused by artificial read, obtain accurate survey
Test result.
Further, the first liquid-holding pipe connection is equipped with the first overflow port, and the second liquid-holding pipe connection is equipped with second
Overflow port.The full liquid product and second that the setting of first overflow port and the second overflow port can accurately control the first liquid-holding pipe is contained
The full liquid product of liquid pipe, convenient for the volume of the subsequent prepare liquid for calculating addition and titer.
Further, first liquid-holding pipe is the first graduated cylinder that outer wall is carved with volume markings, and second liquid-holding pipe is
Outer wall is carved with the second graduated cylinder of volume markings.The setting of first graduated cylinder and the second graduated cylinder is able to solve conventional titration pipe cleaning not side
Just the problem cumbersome with conventional titration Guan Tai little dress liquid.
Further, the agitating device includes making set on the magnetic agitation instrument of measuring cup bottom and in magnetic agitation instrument
With the magneton of lower rotation, the magneton is set in measuring cup.Magneton Stirring under the action of magnetic agitation instrument uniformly measures
Liquid in cup, and the visual different situations of revolving speed of magneton are changed, compared to traditional manual shaking, labor intensity is low,
Test result is more accurate.
Further, the agitating device includes mechanical agitator and the stirring that rotates under mechanical agitator effect
One end of bar, the stirring rod is connect with mechanical agitator, and the other end is set to measuring cup and contains the liquid level of liquid or less.Stirring rod
The liquid in the uniform measuring cup of Stirring under the action of mechanical agitator, and the visual different situations of revolving speed of stirring rod are changed
Become, compared to traditional manual shaking, labor intensity is low, and test result is more accurate.
Further, the input terminal of the control device is connected with the key module for sending instruction to control device,
The output end of control device is connected with the display that liquid quality and volume are contained for showing the first liquid-holding pipe, in the second liquid-holding pipe
Module.The quality obtained in real time, the volume being calculated and the prepare liquid concentration being calculated, can be aobvious by display module
Show, it is simple and clear, it can be avoided error caused by manual operation and artificial reading, improve the accuracy of test result.
Further, the first switch is the first solenoid valve for being connected to control device output end, the second switch
For the second solenoid valve for being connected to control device output end.When the volume of the prepare liquid of drippage reaches the numerical value of setting, control
Device controls the first solenoid valve and closes；During dripping titer, in the color for observing acid-base indicator in measuring cup
When changing, instruction is sent to control device to control second solenoid valve closing by key module, operating process is simple,
Measurement result is accurate.Shutting down for titration end-point is controlled by key module, easy to control compared to traditional operation.
Compared with prior art, the utility model has the beneficial effects that
(1) the utility model obtains the real-time quality that prepare liquid is contained in the first liquid-holding pipe by the first gravity sensor,
Calculate the volume for the prepare liquid being added in measuring cup；It is obtained in the second liquid-holding pipe by the second gravity sensor and contains titer
Real-time quality, calculate the titer volume that is added in measuring cup, it is easy to operate to calculate the concentration of prepare liquid, and energy
Error caused by manually reading enough is avoided, accurate test result is obtained；
(2) the utility model replaces traditional minim pipette using graduated cylinder, be able to solve that cleaning is inconvenient and dress liquid is cumbersome asks
Topic；Graduated cylinder top setting overflow port is convenient to carry out the appearances measurement such as quantitative, avoids the error of artificial judgment；
(3) the utility model replaces traditional manually shaking using agitating device, avoids knot caused by shaking manually
The problem of error and large labor intensity of fruit.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of existing acid base titration device.
Fig. 2 is the structural schematic diagram of the acid base titration device of the utility model.
Fig. 3 is the control principle drawing of the acid base titration device of the utility model.
In attached drawing, 1- measuring cup；The first liquid-holding pipe of 2-；The second liquid-holding pipe of 3-；4- agitating device；5- first switch；6-
Two switches；The first gravity sensor of 7-；The second gravity sensor of 8-；9- control device；The first overflow port of 10-；The second overflow of 11-
Mouthful；12- key module；13- display module.
Specific embodiment
The utility model is further described With reference to embodiment.Wherein, being given for example only property of attached drawing
Illustrate, expression is only schematic diagram, rather than pictorial diagram, should not be understood as the limitation to this patent；In order to which this reality is better described
With novel embodiment, the certain components of attached drawing have omission, zoom in or out, and do not represent the size of actual product；To ability
For field technique personnel, the omitting of some known structures and their instructions in the attached drawings are understandable.
The same or similar label correspond to the same or similar components in the attached drawing of the utility model embodiment；It is practical at this
In novel description, it is to be understood that if the orientation or positional relationship for having the instructions such as term " on ", "lower", "left", "right" is
It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of describing the present invention and simplifying the description, rather than indicate
Or imply that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore retouch in attached drawing
The term for stating positional relationship only for illustration, should not be understood as the limitation to this patent, for the common skill of this field
For art personnel, the concrete meaning of above-mentioned term can be understood as the case may be.
Embodiment one
As shown in Figure 2 to Figure 3 for the utility model acid base titration device embodiment, including measuring cup 1, for containing
First liquid-holding pipe 2 of prepare liquid, the second liquid-holding pipe 3 for containing titer and for stirring stirring for liquid in measuring cup 1
Mix device 4, agitating device 4 includes the stirring-head in measuring cup 1, and the first liquid-holding pipe 2 is equipped with the positioned at 1 rim of a cup of measuring cup
One liquid outlet, the second liquid-holding pipe 3 are equipped with the second liquid outlet positioned at 1 rim of a cup of measuring cup, and agitating device 4 is equipped with and protrudes into measuring cup
Liquid levels stirring end below；It is equipped with first switch 5 at first liquid outlet, is equipped with second switch 6 at the second liquid outlet；First
The bottom of liquid-holding pipe 2 is equipped with the first gravity sensor 7, and the bottom of the second liquid-holding pipe 3 is equipped with the second gravity sensor 8, the first weight
Force snesor 7, the second gravity sensor 8, agitating device 4 are electrically connected with control device 9.
The present embodiment is obtained by the first gravity sensor 7 when implementing and contains the real-time of prepare liquid in first liquid-holding pipe 2
Quality, the volume for the prepare liquid being added in measuring cup 1 can be calculated by expiring liquid quality and empty liquid quality according to the first liquid-holding pipe 2；It is logical
It crosses the second gravity sensor 8 and obtains the real-time quality for containing titer in the second liquid-holding pipe 3, liquid matter is expired according to the second liquid-holding pipe 3
Amount and empty liquid quality can calculate the titer volume being added in measuring cup 1；In conjunction with the solution concentration of titer, can be obtained
The concentration of prepare liquid.
As shown in Fig. 2, the connection of the first liquid-holding pipe 2 is equipped with the first overflow port 10, the connection of the second liquid-holding pipe 3 is equipped with the second overflow
Mouth 11 can accurately control the long-pending full liquid product with the second liquid-holding pipe 3 of full liquid of the first liquid-holding pipe 2, can facilitate and be determined
The measurement of the appearances such as amount, saves the error of artificial judgment.First liquid-holding pipe 2 of the present embodiment is the first amount that outer wall is carved with volume markings
Cylinder, the second liquid-holding pipe 3 are the second graduated cylinder that outer wall is carved with volume markings, and it is inconvenient and traditional to be able to solve the cleaning of conventional titration pipe
The cumbersome problem of the too small dress liquid of buret.
As shown in Fig. 2, agitating device 4 includes making set on the magnetic agitation instrument of 1 bottom of measuring cup and in magnetic agitation instrument
With the magneton of lower rotation, magneton is set in measuring cup 1, magneton uniform measuring cup 1 of Stirring under the action of magnetic agitation instrument
Interior liquid, and the visual different situations of revolving speed of magneton are changed, compared to traditional manual shaking, labor intensity is low, examination
It is more accurate to test result.
As shown in figure 3, control device 9 is from being connected with the key module 12 for sending instruction to control device 9, control
The output end of device 9 is connected with the display that liquid quality and volume are contained for showing the first liquid-holding pipe 2, in the second liquid-holding pipe 3
Module 13；The quality obtained in real time, the volume being calculated and the prepare liquid concentration being calculated, can pass through display module
13 displays, it is simple and clear, it can be avoided error caused by manual operation and artificial reading, improve the accuracy of test result.This
The control device 9 of embodiment is STC89C52 single chip, and key module, display module are all connected to the IO of STC89C52 single chip
Mouthful.
For the accuracy for further promoting measurement result, the first switch 5 of the present embodiment is to be connected to the output of control device 9
First solenoid valve at end, second switch 6 is the second solenoid valve for being connected to 9 output end of control device；The control of the present embodiment fills
It is set to STC89C52 single chip, the first solenoid valve, second solenoid valve are all connected to the I/O port of STC89C52 single chip.In drippage
When the volume of prepare liquid reaches the numerical value of setting, control device 9 controls the first solenoid valve and closes；In the process of drippage titer
In, when observing that the color of acid-base indicator in measuring cup 1 changes, sent by key module 12 to control device 9
Instruction is to control second solenoid valve closing, and operating process is simple, and measurement result is accurate.The titration end-point of the present embodiment is by pressing
The input instruction control of key module 12 or control device 9 automatically control, and avoid manual operation bring measurement error.
The present embodiment in the specific implementation, sequentially includes the following steps:
S10. check the first liquid-holding pipe 2 and the second liquid-holding pipe 3 whether leak, adopt and be washed with distilled water if water-tight, then
With the first liquid-holding pipe of prepare liquid rinse 2, with the second liquid-holding pipe of titer rinse 3；
S20. the first empty liquid mass value W0, the first full liquid mass value W1 of the first liquid-holding pipe 2 are obtained and is stored, obtains second
The empty liquid mass value M0 of the second of liquid-holding pipe 3, the second full liquid mass value M1 are simultaneously stored；
S30. it opens first switch 5 prepare liquid is added dropwise in measuring cup 1, obtains the first real-time matter of the first liquid-holding pipe 2
W2 is measured, calculates and prepare liquid real-time volume V1 in measuring cup 1 is added and stores；
S40. 1~2 drop acid-base indicator is added dropwise into measuring cup 1, and starts agitating device 4；
S50. it opens second switch 6 titer is added dropwise in measuring cup 1, first contains liquid when obtaining acid-base indicator discoloration
Second real-time quality M2 of pipe 2 is calculated and 1 Plays liquid real-time volume V2 of measuring cup is added and stores；
S60. the concentration C 1 of prepare liquid is calculated by formula C1=C2*V2/V1, in formula, C2 is concentration of standard solution.
In step S30, prepare liquid real-time volume V1 is calculated as follows:
V1=V10*(W2-W0)/(W1-W0)
In formula, V10For the full liquid product of the first liquid-holding pipe 2.
In step S50, titer real-time volume V2 is calculated as follows:
V2=V20*(M2-M0)/(M1-M0)
In formula, V20For the full liquid product of the second liquid-holding pipe 3.
By above step, the utility model can avoid measurement error caused by manual operation as far as possible, improve test result
Accuracy.
Embodiment two
The present embodiment is the same as example 1, institute the difference is that, agitating device 4 includes mechanical agitator and in machine
The lower stirring rod rotated of tool blender effect, one end of stirring rod are connect with mechanical agitator, and the other end is contained set on measuring cup 1
Below the liquid level of liquid.Liquid in the uniform measuring cup 1 of stirring rod Stirring under the action of mechanical agitator, and stirring rod
The visual different situations of revolving speed are changed, and compared to traditional manual shaking, labor intensity is low, and test result is more accurate.
Obviously, the above embodiments of the present invention is merely examples for clearly illustrating the present invention, and
It is not limitations of the embodiments of the present invention.For those of ordinary skill in the art, in above description
On the basis of can also make other variations or changes in different ways.There is no need and unable to give all embodiments
Exhaustion.Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention etc., should be included in
Within the protection scope of the utility model claims.
Claims (7)
1. a kind of acid base titration device, which is characterized in that including measuring cup (1), the first liquid-holding pipe for containing prepare liquid
(2), the agitating device (4) for containing the second liquid-holding pipe (3) of titer and for stirring measuring cup (1) interior liquid, institute
It states the first liquid-holding pipe (2) and is equipped with the first liquid outlet for being located at measuring cup (1) rim of a cup, second liquid-holding pipe (3) is equipped with to be located at and survey
Second liquid outlet of measuring cup (1) rim of a cup, the agitating device (4) are equipped with and protrude into the stirring end below of liquid levels in measuring cup；
First switch (5) are equipped at first liquid outlet, are equipped with second switch (6) at second liquid outlet；Described first contains liquid
The bottom for managing (2) is equipped with the first gravity sensor (7), and the bottom of second liquid-holding pipe (3) is equipped with the second gravity sensor
(8), first gravity sensor (7), the second gravity sensor (8), agitating device (4) are electrically connected with control device (9).
2. acid base titration device according to claim 1, which is characterized in that first liquid-holding pipe (2) connection is equipped with the
One overflow port (10), the second liquid-holding pipe (3) connection are equipped with the second overflow port (11).
3. acid base titration device according to claim 2, which is characterized in that first liquid-holding pipe (2) is carved with for outer wall
First graduated cylinder of volume markings, second liquid-holding pipe (3) are the second graduated cylinder that outer wall is carved with volume markings.
4. acid base titration device according to any one of claims 1 to 3, which is characterized in that the agitating device (4) includes
Magnetic agitation instrument set on measuring cup (1) bottom and the magneton that rotates under the effect of magnetic agitation instrument, the magneton, which is set to, to be surveyed
In measuring cup (1).
5. acid base titration device according to any one of claims 1 to 3, which is characterized in that the agitating device (4) includes
Mechanical agitator and the stirring rod rotated under mechanical agitator effect, one end of the stirring rod and mechanical agitator connect
It connects, the other end is set to measuring cup (1) and contains the liquid level of liquid or less.
6. acid base titration device according to claim 1, which is characterized in that the input terminal of the control device (9) connects
There is the key module (12) for sending instruction to control device (9), the output end of control device (9) is connected with for showing the
The display module (13) of liquid quality and volume is contained in one liquid-holding pipe (2), the second liquid-holding pipe (3).
7. acid base titration device according to claim 1, which is characterized in that the first switch (5) is to be connected to control
First solenoid valve of device (9) output end, the second switch (6) are the second electromagnetism for being connected to control device (9) output end
Valve.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822044059.7U CN209280570U (en) | 2018-12-06 | 2018-12-06 | A kind of acid base titration device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822044059.7U CN209280570U (en) | 2018-12-06 | 2018-12-06 | A kind of acid base titration device |
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| CN209280570U true CN209280570U (en) | 2019-08-20 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109459430A (en) * | 2018-12-06 | 2019-03-12 | 广东海洋大学 | A kind of acid base titration device and titration method |
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2018
- 2018-12-06 CN CN201822044059.7U patent/CN209280570U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109459430A (en) * | 2018-12-06 | 2019-03-12 | 广东海洋大学 | A kind of acid base titration device and titration method |
| CN109459430B (en) * | 2018-12-06 | 2024-02-06 | 广东海洋大学 | Acid-base titration device and titration method |
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