CN102192969A - Titrating head of electrochemistry titrator - Google Patents
Titrating head of electrochemistry titrator Download PDFInfo
- Publication number
- CN102192969A CN102192969A CN2010101213810A CN201010121381A CN102192969A CN 102192969 A CN102192969 A CN 102192969A CN 2010101213810 A CN2010101213810 A CN 2010101213810A CN 201010121381 A CN201010121381 A CN 201010121381A CN 102192969 A CN102192969 A CN 102192969A
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- China
- Prior art keywords
- titrating head
- channel
- cylindrical surface
- titrating
- electrometric titration
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Abstract
The invention relates to a titrating head of an electrochemistry titrator. The titrating head comprises large and small cylinders with a same axis, a channel arranged in outer surface of the two cylinders, an upper end surface and a lower surface which are communicated with each other via the channel. The channel has several bending channels which have three optional directions that: the direction of main parts of bending channels is the same with the axis direction of the cylindrical surface; the direction of main parts of bending channels is the same with the peripheral direction of the cylindrical surface; main parts of bending channels is along the cylindrical surface and in helical shape. Depth of a channel cross section is gradual shallower from a flow inlet to an outlet. Compared to the prior art, the invention is characterized in that: etching the channel in the outer surface of the titrating head as a diversion trench of titrant; controlling amounts of titrant based on the size of the diversion trench. When a power plant stops liquid injection, outflow of liquid in the titrating head can be stopped immediately. Therefore, amounts of liquid flow can be controlled strictly. The invention has a simple structure. Shape and volume of the channel can be designed according to requirements so as to achieve the required accuracy. In addition, processing technology of the channel is simple, producing costs are low, and the invention is suitable for large-scale use.
Description
Technical field:
The present invention relates to a kind of physics of material or the investigative technique of chemical property, especially relate to a kind of electrometric titration instrument titrating head.
Background technology:
In the prior art, the electrometric titration instrument is made up of sample injection unit, titration unit, measuring unit, control module usually, wherein the titration unit is by a peristaltic pump titration reagent to be added drop-wise in the measuring cup through titrating head, and the measuring accuracy of volume of titrant has very important influence to the total system measuring accuracy.Titrating head in the common titrator is exactly a simple open type buret, under the piston of titrant in the titration syringe promotes, slowly flows out from titrating head through the plane valve.The weak point of this structure is: when the execution of titration control system stops titration, final control to titration reagent can't be held, produce this after often externally the instruction driving stops and not dripping the drippage that maybe should not drip, ullage or excessive situation happen occasionally when causing terminal point.Because of the measurement of volume of titrant just has error, thereby cause the inaccurate of whole measurement result.
Summary of the invention:
The objective of the invention is to provide a kind of simple in structure, strict control titrant electrometric titration instrument titrating head titer, that can improve electrochemical titrator measuring accuracy at the prior art weak point.
The objective of the invention is to realize: a kind of electrometric titration instrument titrating head by following measure, its special character is: it comprises large and small two right cylinders in same axle center, two right cylinder outer fringe surfaces have raceway groove, and described raceway groove is communicated with the upper and lower end face of two cylindrical surface body.
The external edge surface channel of described two cylindrical surface has some bendings.
Described some bending major trunk roads are along face of cylinder axis direction.
Described some bending major trunk roads are along face of cylinder circumferencial direction.
Described some bending major trunk roads are shape in the shape of a spiral along the face of cylinder.
The external edge surface channel of described two cylindrical surface section depth is passed shallow by inflow entrance to flow export gradually.
Compared with prior art, the electrometric titration instrument titrating head that has adopted the present invention to propose, has following advantage: by scribe the diversion trench of raceway groove at the titrating head outer fringe surface as titrant, control the total amount of the titrant of process with the size of diversion trench, liquid promptly breaks strict controlling liquid flow when disconnected in the titrating head after propulsion system stop fluid injection.The present invention shape and volume simple in structure, that can design raceway groove as requested reach required precision, and in addition, the raceway groove processing technology is simple, with low cost, are fit to a large amount of the use.
Description of drawings:
Fig. 1 is that the embodiment surface channel that the present invention proposes launches synoptic diagram.
Fig. 2 is that another embodiment surface channel that the present invention proposes launches synoptic diagram.
Embodiment:
Below in conjunction with accompanying drawing embodiment is elaborated:
In the embodiment of the present invention shown in figure 1, a kind of electrometric titration instrument titrating head, it comprises: the large cylinder 1 in same axle center, small cylinder 2, two right cylinder outer fringe surfaces have raceway groove 3, and described raceway groove is communicated with upper surface 11, the lower surface 21 of two cylindrical surface body.The present invention has also taked following measure: the external edge surface channel of described two cylindrical surface has some bendings, and described some bending major trunk roads are along axis direction, and the external edge surface channel of described two cylindrical surface section depth is passed shallow by inflow entrance to flow export gradually.
When the present invention uses, utilize titrating head big, the shaft shoulder interference fit of small cylinder is installed in the liquid line that matches with its physical dimension, the raceway groove of titrating head outer fringe surface and liquid line wall form the fluid pipeline of a closure, liquid line links to each other with the liquid feeding source, when there is the pressurization behavior at pipeline top, titrant liquid under pressure through raceway groove to outside fluid injection, after propulsion system stop fluid injection, because liquid is different with external environment density in the titrating head, and the raceway groove section depth on it is passed shallow by inflow entrance to flow export gradually, export tiny, reason because of surface tension of liquid, liquid forms tension force on titrating head endpiece surface, stops the interior liquid of raceway groove to external diffusion, has accomplished fully when disconnected promptly disconnected perfect condition.
The present invention can design the shape and the volume of raceway groove according to the required accuracy requirement that reaches, and reaches required precision, and Fig. 2 has provided different raceway groove bending designs.Described some bending major trunk roads also can adopt along the face of cylinder shape in the shape of a spiral along face of cylinder circumferencial direction.Titrating head of the present invention can adopt different materials such as metal, pottery, nylon and various plastic production, uses down with the environment that adapts to different operating mode strong acid or highly basic or strong oxidizing property.
Described embodiments of the present invention above in conjunction with the accompanying drawings, the structure that embodiment provides is not construed as limiting the invention, and those skilled in the art make various distortion within the scope of the appended claims or revise all in protection domain in this area.
Claims (7)
1. electrometric titration instrument titrating head, it is characterized in that: it comprises large and small two right cylinders in same axle center, and two right cylinder outer fringe surfaces have raceway groove, described raceway groove is communicated with the upper and lower end face of two cylindrical surface body.
2. electrometric titration instrument titrating head according to claim 1 is characterized in that the external edge surface channel of described two cylindrical surface has some bendings.
3. electrometric titration instrument titrating head according to claim 1 and 2 is characterized in that described some bending major trunk roads are along face of cylinder axis direction.
4. electrometric titration instrument titrating head according to claim 1 and 2 is characterized in that described some bending major trunk roads are along face of cylinder circumferencial direction.
5. according to claim 1 or 2 or described electrometric titration instrument titrating head, it is characterized in that described some bending major trunk roads along the face of cylinder shape in the shape of a spiral.
6. electrometric titration instrument titrating head according to claim 1 and 2 is characterized in that the external edge surface channel of described two cylindrical surface section depth passs shallow by inflow entrance to flow export gradually.
7. electrometric titration instrument titrating head according to claim 3 is characterized in that the external edge surface channel of described two cylindrical surface section depth passs shallow by inflow entrance to flow export gradually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101213810A CN102192969A (en) | 2010-03-10 | 2010-03-10 | Titrating head of electrochemistry titrator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101213810A CN102192969A (en) | 2010-03-10 | 2010-03-10 | Titrating head of electrochemistry titrator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102192969A true CN102192969A (en) | 2011-09-21 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101213810A Pending CN102192969A (en) | 2010-03-10 | 2010-03-10 | Titrating head of electrochemistry titrator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102192969A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113933452A (en) * | 2020-07-13 | 2022-01-14 | 恩德莱斯和豪瑟尔分析仪表两合公司 | Method for titrating sample solutions |
-
2010
- 2010-03-10 CN CN2010101213810A patent/CN102192969A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113933452A (en) * | 2020-07-13 | 2022-01-14 | 恩德莱斯和豪瑟尔分析仪表两合公司 | Method for titrating sample solutions |
| CN113933452B (en) * | 2020-07-13 | 2024-03-08 | 恩德莱斯和豪瑟尔分析仪表两合公司 | Method for titrating sample solutions |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110921 |