CN203798791U - Burette for both acid and alkali - Google Patents
Burette for both acid and alkali Download PDFInfo
- Publication number
- CN203798791U CN203798791U CN201420215190.4U CN201420215190U CN203798791U CN 203798791 U CN203798791 U CN 203798791U CN 201420215190 U CN201420215190 U CN 201420215190U CN 203798791 U CN203798791 U CN 203798791U
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- CN
- China
- Prior art keywords
- imbibition
- coarse adjustment
- adjustment rod
- branch pipe
- titration
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- Expired - Fee Related
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- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
The utility model relates to a burette for both acid and alkali. The burette comprises a crossed titration main pipe, a liquid suction device, a coarse adjustment rod and a fine adjustment rod, wherein the crossed titration main pipe is divided into an upper branch pipe, a lower branch pipe, a left branch pipe and a right branch pipe, the top end of the upper branch pipe is closed, a liquid flow-through port is formed in the bottom end of the lower branch pipe, measurement scale marks are arranged on the lower branch pipe from top to bottom, the left branch pipe is communicated with the liquid suction device through a communicating pipe, and threads are formed in the inner wall of the right branch pipe. Threads are formed outside the coarse adjustment rod, the coarse adjustment rod is installed in the left branch pipe, a coarse piston is arranged at the front end of the coarse adjustment rod, and threads are formed inside the coarse adjustment rod. Threads are formed outside the fine adjustment rod, the fine adjustment rod is installed in the coarse adjustment rod, and a fine piston is arranged at the front end of the fine adjustment rod. The burette for both acid and alkali is simple in structure, and convenient and fast to operate and can be used for titration of an acid solution and an alkaline solution; due to the fact that the coarse adjustment rod and the fine adjustment rod are arranged, titration is fast and accurate, and trouble and labor are saved.
Description
Technical field
The utility model relates to chemical experimental instrument, and what be specifically related to is a kind of acid-base universal burette.
Background technology
Buret is one of underlying instrument articles for use of volumetry in chemical experiment, belongs to and measures formula weight device.On buret, there is accurate scale, can accurately read the volume of vs.In volumetric analysis test, during acid base titration, meet the tendency with the buret of corresponding attribute, the lower end of its acid buret is a glass cock, during titration, opens cock and can carry out titration, be applicable to acid solution or there is the solution of oxidisability, be not suitable for alkaline solution; The lower end of base buret connects a cuvette with sharp mouth with rubber tube.A glass ball is housed in proofed sleeve, replaces glass cock, to control the outflow of solution, be applicable to alkaline solution or non-oxidative solution, be not suitable for acid solution.Therefore, existing buret has following shortcoming:
1, acid, base buret can not be general, needs vs to classify before use, previous work is loaded down with trivial details;
When 2, titration starts, vs is poured into from buret upper end, in a segment pipe below the switch of buret, can produce bubble, normally experimenter manually rap tube wall or fast tapping bubble is discharged, often need to repeat to knock or repeat tapping just can reach requirement of experiment, time-consuming taking a lot of work so not only, and affect test findings;
3, to control the device that liquid opens be the rubber tube with beaded glass to base buret, standing time is long there will be oxidation or both contacts not tight, there is the phenomenon of leakage, affect the accuracy of experimental result.
Utility model content
The purpose of this utility model is to provide a kind of acid-base universal burette, for solving at present because acid, the separated setting of base buret cause use procedure inconvenience, the inefficient problem of titration.
The utility model is achieved through the following technical solutions: a kind of acid-base universal burette comprises cross titration supervisor, aspirator, coarse adjustment pole, fine tuning pole, wherein, cross titration supervisor is divided into arm, lower branch line, left arm, right arm, the top closure of upper arm, the bottom of lower branch line is provided with on liquid communication mouth, lower branch line and is from top to bottom provided with from graduation, left arm was communicated with aspirator by communicating pipe, on right branch pipe wall, was provided with screw thread; Coarse adjustment pole is outside equipped with screw thread and is arranged in left arm, and the front end of coarse adjustment pole is provided with heavy manual labour plug, and the inside of coarse adjustment pole is provided with screw thread; Fine tuning pole is outside equipped with screw thread and is arranged in coarse adjustment pole, and the front end of fine tuning pole is provided with small piston.
Described aspirator comprises imbibition cylinder, imbibition bar, imbibition piston, imbibition cylinder was communicated with left arm by communicating pipe, imbibition piston is positioned at imbibition cylinder, imbibition piston is arranged on imbibition bar front end, and between imbibition piston and imbibition cylinder, be provided with back-moving spring, the rear end of imbibition bar is provided with setting nut.
Adopt the good effect of technique scheme:
1, in the utility model, be applicable to the titration of acid alkaline solution, avoided the Literature Consult work before experiment after general to Acidity of Aikalinity liquid, and the problem of having avoided repeatedly changing buret, improved the convenience of using, improved titration efficiency;
2, coarse adjustment pole, fine tuning pole are set in the utility model, during titration, first regulate coarse adjustment pole, when being titrated near terminal, then regulate fine tuning pole until titration finishes, whole titration process makes titer more accurate, reduces the error of test;
3, simple in structure, the simple operation, practical of the utility model, is adapted at the medical experiment correlation test chambers such as hospital, research institute, colleges and universities and promotes the use of.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure: 1 cross titration supervisor, 2 coarse adjustment poles, 3 fine tuning poles, 4 liquid communication mouths, 5 graduations, 6 communicating pipes, 7 heavy manual labour plugs, 8 small pistons, 9 imbibition cylinders, 10 imbibition bars, 11 imbibition pistons, 12 back-moving springs, 13 setting nuts.
Embodiment
Below in conjunction with concrete diagram, the utility model is further set forth.
As shown in Figure 1, a kind of acid-base universal burette comprises cross titration supervisor 1, aspirator, coarse adjustment pole 2, fine tuning pole 3.
Wherein, cross titration supervisor 1 is divided into arm, lower branch line, left arm, right arm.
The top closure of upper arm.The bottom of lower branch line is provided with on liquid communication mouth 4, lower branch line and is from top to bottom provided with from graduation 5.Left arm was communicated with aspirator by communicating pipe 6.On right branch pipe wall, be provided with screw thread, for coarse adjustment pole is installed.
Coarse adjustment pole outer 2 is provided with screw thread and is arranged in left arm, and the front end of coarse adjustment pole 2 is provided with heavy manual labour plug 7, and the inside of coarse adjustment pole 2 is provided with screw thread, for fine tuning pole is installed.
Fine tuning pole 3 is outside equipped with screw thread and is arranged in coarse adjustment pole, and the front end of fine tuning pole is provided with small piston 8.
In addition, aspirator is the commercially available device with liquid suction function, but from the viewpoint of simple and with low cost, can be set to by aspirator: integral body comprises imbibition cylinder 9, imbibition bar 10, imbibition piston 11.Wherein imbibition cylinder 9 was communicated with left arm by communicating pipe 6, imbibition piston 11 is positioned at imbibition cylinder 9, imbibition piston 11 is arranged on the front end of imbibition bar 10, and is provided with back-moving spring 12 between imbibition piston 11 and imbibition cylinder 9, and the rear end of imbibition bar 10 is provided with setting nut 13.
During use, first determine coarse adjustment pole, fine tuning pole has been adjusted to outermost end, then the liquid communication mouth of cross titration supervisor of the present utility model lower end is inserted under the acidity of institute's titration or the liquid level of alkaline vs, passing through aspirator imbitition, liquid in cross titration supervisor exceeds after graduation slightly, exceed slightly after 0 scale mark, then gently regulate coarse adjustment pole and fine tuning pole, make to be positioned at 0 scale mark place to liquid level, finally start to regulate coarse adjustment pole, when titration approaches terminal, change into and regulate fine tuning pole to carry out titration, and titration volume is carried out to record.
The utility model is simple in structure, simple operation, can be used for the titration of Acidity of Aikalinity solution, by coarse adjustment pole, fine tuning pole are set, makes titration quick and accurate, save trouble and labor.
Claims (2)
1. an acid-base universal burette, it is characterized in that: this buret comprises cross titration supervisor, aspirator, coarse adjustment pole, fine tuning pole, wherein, cross titration supervisor is divided into arm, lower branch line, left arm, right arm, the top closure of upper arm, the bottom of lower branch line is provided with on liquid communication mouth, lower branch line and is from top to bottom provided with from graduation, and left arm was communicated with aspirator by communicating pipe, on right branch pipe wall, was provided with screw thread; Coarse adjustment pole is outside equipped with screw thread and is arranged in left arm, and the front end of coarse adjustment pole is provided with heavy manual labour plug, and the inside of coarse adjustment pole is provided with screw thread; Fine tuning pole is outside equipped with screw thread and is arranged in coarse adjustment pole, and the front end of fine tuning pole is provided with small piston.
2. a kind of acid-base universal burette according to claim 1, it is characterized in that: described aspirator comprises imbibition cylinder, imbibition bar, imbibition piston, imbibition cylinder was communicated with left arm by communicating pipe, imbibition piston is positioned at imbibition cylinder, imbibition piston is arranged on imbibition bar front end, and between imbibition piston and imbibition cylinder, be provided with back-moving spring, the rear end of imbibition bar is provided with setting nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420215190.4U CN203798791U (en) | 2014-04-24 | 2014-04-24 | Burette for both acid and alkali |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420215190.4U CN203798791U (en) | 2014-04-24 | 2014-04-24 | Burette for both acid and alkali |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203798791U true CN203798791U (en) | 2014-08-27 |
Family
ID=51380995
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420215190.4U Expired - Fee Related CN203798791U (en) | 2014-04-24 | 2014-04-24 | Burette for both acid and alkali |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203798791U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104865344A (en) * | 2015-04-20 | 2015-08-26 | 苏州卫生职业技术学院 | Burette switching device |
| CN106855554A (en) * | 2015-12-09 | 2017-06-16 | 王翔 | A kind of base buret |
| CN113189791A (en) * | 2021-05-06 | 2021-07-30 | 安徽工程大学 | Degree-adjustable glasses |
-
2014
- 2014-04-24 CN CN201420215190.4U patent/CN203798791U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104865344A (en) * | 2015-04-20 | 2015-08-26 | 苏州卫生职业技术学院 | Burette switching device |
| CN106855554A (en) * | 2015-12-09 | 2017-06-16 | 王翔 | A kind of base buret |
| CN113189791A (en) * | 2021-05-06 | 2021-07-30 | 安徽工程大学 | Degree-adjustable glasses |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140827 Termination date: 20150424 |
|
| EXPY | Termination of patent right or utility model |