CN205581070U - Sodium chloride content spot test device among cellulose ether - Google Patents
Sodium chloride content spot test device among cellulose ether Download PDFInfo
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- CN205581070U CN205581070U CN201620362840.7U CN201620362840U CN205581070U CN 205581070 U CN205581070 U CN 205581070U CN 201620362840 U CN201620362840 U CN 201620362840U CN 205581070 U CN205581070 U CN 205581070U
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- burette
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- autotitrator
- sodium chloride
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Abstract
The utility model discloses a sodium chloride content spot test device among cellulose ether, include electromagnetism autotitrator, electromagnetic agitator and be located the last titration container of electromagnetic agitator the top of titrating the container is fixed with buret subassembly, measuring electrode and reference electrode respectively, just measuring electrode all stretches into with reference electrode's response end in the titration container, wherein measuring electrode's wiring end is connected to through fast wiring electromagnetism autotitrator's measuring electrode output, reference electrode's wiring end is connected to through fast wiring electromagnetism autotitrator's reference electrode output electromagnetism autotitrator's pulse output end still is connected with pulse solenoid valve through fast wiring, and this pulse solenoid valve fixes on the buret subassembly. It is showing the effect: requirement to operating personnel is low, can save reagent, stability is good as a result, reference material's the rate of recovery is high.
Description
Technical field
This utility model relates to cellulose ether production technical field, specifically, is a kind of fine
Sodium chloride content rapid determination device in dimension element ether.
Background technology
Cellulose ether is the new high-tech material with ether structure that a class is made up of cellulose, and it is extensive
It is applied to the industries such as building industry, ceramic manufacturing enterprises, coatings industry, ink printing industry.At cellulose
In ether production process, need the sodium chloride content wherein contained is measured, and existing industry
Standard uses back titration precipitant method after standard silver nitrate sedimetry or precipitation, needs to use chromium
Acid potassium or ammonium ferric sulfate make indicator, potassium thiocyanate standard solution accurate calibration silver nitrate titration
Liquid.But the method exists operating technology requires height, and cultivating a qualified operator needs to compare
The defects such as long time.
It addition, somebody proposes the assay method using constant-current titration, such as the current potential of prunus mume (sieb.) sieb.et zucc. Teller
Autotitrator.Volumetric solution dropping, electromagnetic agitation, temperature and potential measurement are combined.
Current potential during instrument display silver nitrate dropping rises change, reaches to be automatically stopped during catastrophe point
Dropping.Mensuration process is quick and precisely.But need also exist for silver nitrate titration liquid is demarcated, and
Instrument brings a high price, and general enterprises is difficult to bear.Domestic automatical potentiometric titrimeter is provided only with electricity
Pole socket and pulse output socket, need to buy many accessories, and composition system just can be carried out automatically
Titration.
Summary of the invention
For the deficiencies in the prior art, the purpose of this utility model is to provide in a kind of cellulose ether
Sodium chloride content rapid determination device, this device have low cost, in high precision, easily operation, energy
Enough avoid the advantages such as personal error.
For reaching above-mentioned purpose, the technical solution adopted in the utility model is as follows:
Sodium chloride content rapid determination device in a kind of cellulose ether, it it is critical only that: includes electricity
Magnetic autotitrator, magnetic stirrer and be positioned at the titration vessel on described magnetic stirrer,
Above described titration vessel, it is respectively fixed with burette assembly, measures electrode and reference electricity
Pole, and the induction end of described measurement electrode and reference electrode all stretches in described titration vessel, its
The terminals of middle measurement electrode are connected to the measurement of described electromagnetism autotitrator by fast wiring
Electrode output, it is automatic that the terminals of described reference electrode are connected to described electromagnetism by fast wiring
The reference electrode outfan of titrator is the most logical at the pulse output end of described electromagnetism autotitrator
Too fast wiring connects impulse electromagnetic valve, and this impulse electromagnetic valve is fixed on described burette assembly
On.
This device in use, first injects silver nitrate titration solution in burette assembly
And from the scale of burette assembly, read initial reading；Open electromagnetism autotitrator and magnetic force stirs
Mix appliance mains switch preheating certain time, and according to the potential jump point of silver nitrate titration sodium chloride
Pre-control point and the titration end-point of autotitrator are set；Samples weighing is placed in titration vessel,
The step specified by touchstone is placed on magnetic stirring apparatus after completing preparation, will measure electricity
Pole, reference electrode insert in solution and regulate stirring intensity, and burette assembly is placed in titration vessel
Interior ullage appropriate location；Press automatic Titration button, start automatic dripping silver nitrate solution；
When solution potential reaches to set terminal, impulse electromagnetic valve is closed, and completes titration；From burette
Read titration end readout on scale and complete whole mensuration process.
Carry out sodium chloride mensuration by this device, can save reagent Neutral potassium chromate, ammonium ferric sulfate and
Potassium thiocyanate；Sodium chloride content in cellulose ether can be completed easily, accurately and rapidly survey
Fixed；Requirement to operator is low；Result good stability, is repeated several times same sample
Measuring, precision is 2%；Its regression equation response rate of the test data of standard substance is high.
Further, described burette assembly is included burette and is connected by silicon rubber hose
Capillary tube below this burette, described impulse electromagnetic valve is fixed on described burette and capillary
Between pipe.
Pass through said structure, it is possible to be easy to control flow velocity and the consumption of titer reagent, be conducive to carrying
The precision that high sodium chloride content measures.
Further, for the ease of the acquisition of titer reagent consumption, described burette uses 10ml
Brown acid buret.
Further, described measurement electrode can use silver electrode, described reference electrode can use sweet
Hydrargyrum reference electrode.
Remarkable result of the present utility model is: simple to operate, and the requirement to operator is low；Can
To save reagent Neutral potassium chromate, ammonium ferric sulfate and potassium thiocyanate；Can easily, accurately, quickly
The sodium chloride content that completes in cellulose ether measure；Result good stability, is carried out same sample
Mensuration is repeated several times, and precision is 2%；Its regression equation of test data of standard substance reclaims
Rate is high.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
Below in conjunction with the accompanying drawings detailed description of the invention of the present utility model and operation principle are made into
One step describes in detail.
As it is shown in figure 1, sodium chloride content rapid determination device in a kind of cellulose ether, including electricity
Magnetic autotitrator 1, magnetic stirrer 2 and be positioned at the titration on described magnetic stirrer 2
Container 3, is respectively fixed with burette assembly 4 above described titration vessel 3, measures electricity
Pole 5 and reference electrode 6, and the induction end of described measurement electrode 5 and reference electrode 6 all stretches
Entering in described titration vessel 3, the terminals wherein measuring electrode 5 are connected to institute by fast wiring
Stating the measurement electrode output of electromagnetism autotitrator 1, the terminals of described reference electrode 6 lead to
Too fast wiring is connected to the reference electrode outfan of described electromagnetism autotitrator 1, at described electricity
The pulse output end of magnetic autotitrator 1 connects also by fast wiring impulse electromagnetic valve 7, should
Impulse electromagnetic valve 7 is fixed on described burette assembly 4.
Seeing accompanying drawing 1, described burette assembly 4 includes burette 41 and passes through silicone rubber
Hose connection capillary tube 42 below this burette 41, described impulse electromagnetic valve 7 is fixed on
Between described burette 41 and capillary tube 42.
In the present embodiment, described burette 41 uses 10ml brown acid buret, described survey
Amount electrode 5 can use silver electrode, described reference electrode 6 can use calomel reference electrode.
The assay method of this device is as follows:
By impulse electromagnetic valve 7, calomel reference electrode 6, measuring electrode 5, to be connected to electromagnetism automatic
The corresponding output end of titrator 1, connects burette 41 and capillary tube 42 with silicon rubber hose,
Impulse electromagnetic valve 7 and capillary glass tube 42 are also fixed on the correct position on titration vessel 3,
Inject silver nitrate titration solution to burette 41 and from burette 41 scale, read initial reading,
Magnetic stirrer 2 is placed on titration platform；
Open electromagnetism autotitrator 1 and magnetic stirring apparatus 2 on and off switch preheat 15 minutes,
And according to the potential jump point of silver nitrate titration sodium chloride arrange autotitrator pre-control point and
Titration end-point；
Samples weighing is placed in titration vessel 3 (for beaker in this example), advises by touchstone
Fixed step is placed on magnetic stirring apparatus 2 after completing preparation, will measure electrode 5, reference electricity
Pole 6 is inserted in solution and regulates stirring intensity, and capillary glass tube 42 is placed in titration vessel 3 i.e.
Ullage appropriate location in beaker；
Press automatic Titration button, start automatic dripping silver nitrate solution, when solution potential reaches to set
When determining terminal, impulse electromagnetic valve 7 is closed, and completes titration.Read from burette 41 scale
Titration end readout, completes whole mensuration process.
This device can complete sodium chloride content in cellulose ether easily, accurately and rapidly and survey
Fixed；Requirement to operator is low, after the terminal and pre-control point completing autotitrator is arranged,
One personnel not having any work of cement labouratory to experience is through once explanation just can complete independently
Measure；Result good stability: same sample is repeated several times mensuration, precision is 2%；
Its regression equation response rate of the test data of standard substance is high, and benchmark sodium chloride adds in sample
Carry out measuring after same treatment, the ratio of result after sodium chloride content and addition in deduction sample
Being the response rate, measured data is 99.6%.
Claims (4)
1. sodium chloride content rapid determination device in a cellulose ether, it is characterised in that: bag
Include electromagnetism autotitrator (1), magnetic stirrer (2) and be positioned at described magnetic stirrer
(2) titration vessel (3) on, is respectively fixed with in the top of described titration vessel (3)
Burette assembly (4), measurement electrode (5) and reference electrode (6), and described measurement
Electrode (5) all stretches in described titration vessel (3) with the induction end of reference electrode (6),
The terminals wherein measuring electrode (5) are connected to described electromagnetism autotitrator by fast wiring
(1) measurement electrode output, the terminals of described reference electrode (6) are by fast wiring even
It is connected to the reference electrode outfan of described electromagnetism autotitrator (1), automatic at described electromagnetism
The pulse output end of titrator (1) connects also by fast wiring impulse electromagnetic valve (7), should
Impulse electromagnetic valve (7) is fixed on described burette assembly (4).
Sodium chloride content rapid determination device in cellulose ether the most according to claim 1,
It is characterized in that: described burette assembly (4) includes burette (41) and by silicon rubber
The hose connection capillary tube (42) in this burette (41) lower section of glue, described impulse electromagnetic valve
(7) it is fixed between described burette (41) and capillary tube (42).
Sodium chloride content rapid determination device in cellulose ether the most according to claim 2,
It is characterized in that: described burette (41) uses 10ml brown acid buret.
Sodium chloride content rapid determination device in cellulose ether the most according to claim 1,
It is characterized in that: described measurement electrode (5) can use silver electrode, described reference electrode (6)
Calomel reference electrode can be used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620362840.7U CN205581070U (en) | 2016-04-26 | 2016-04-26 | Sodium chloride content spot test device among cellulose ether |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620362840.7U CN205581070U (en) | 2016-04-26 | 2016-04-26 | Sodium chloride content spot test device among cellulose ether |
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| Publication Number | Publication Date |
|---|---|
| CN205581070U true CN205581070U (en) | 2016-09-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620362840.7U Active CN205581070U (en) | 2016-04-26 | 2016-04-26 | Sodium chloride content spot test device among cellulose ether |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109298128A (en) * | 2018-11-02 | 2019-02-01 | 山东石大胜华化工集团股份有限公司 | Propene carbonate catalyst for synthesizing detection method of content and device |
-
2016
- 2016-04-26 CN CN201620362840.7U patent/CN205581070U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109298128A (en) * | 2018-11-02 | 2019-02-01 | 山东石大胜华化工集团股份有限公司 | Propene carbonate catalyst for synthesizing detection method of content and device |
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| GR01 | Patent grant |