CN205091309U - An accurate zero point and quantitative buret adjusted - Google Patents
An accurate zero point and quantitative buret adjusted Download PDFInfo
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- CN205091309U CN205091309U CN201520910973.9U CN201520910973U CN205091309U CN 205091309 U CN205091309 U CN 205091309U CN 201520910973 U CN201520910973 U CN 201520910973U CN 205091309 U CN205091309 U CN 205091309U
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- titration
- valve
- tube
- titrating
- buret
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Abstract
The utility model provides an accurate zero point and quantitative buret adjusted comprises bulky titration part, micro - volume titration part and flowing back part, bulky titration part is including titrating body I, liquid feeding funnel I, titrating valve I and glass delivery tube I, the part is titrated including titrating body II, liquid feeding funnel II, titrating valve II and glass delivery tube II to the trace volume, the flowing back part is including fluid -discharge tube, flowing back valve and drainage hopper, titrate the lower extreme of body I, titration body II and fluid -discharge tube and connect the titrating head that has three - way interface respectively to respectively through the break -make of titrating valve I, titrate valve II, the body being controlled to the flowing back valve. Can the accurate determination blank experiment of an accurate zero point and quantitative buret adjusted, titration end point's volume, can effective control experimental error, adjust simultaneously and titrate convenient and fast at zero point.
Description
Technical field
The utility model relates to chemical test field, specifically belongs to a kind of experimental apparatus.
Background technology
Buret is used for the experimental apparatus of Accurate Measurement volumetric soiutions volume in chemical analysis test, mainly contain acid and alkali formula two kinds of burets at present, all need to release unnecessary solution to zero graduation line from titration valve before carrying out titration, sometimes just required zero point can be adjusted to through the process of repeatedly liquid feeding, discharge opeing possibly, waste test period.It is less that the titration of titration experiments empty generally consumes volume, it is more that sample determination consumes volume, adopts the buret of a same large volume to carry out titration, easily cause whole experimental error to strengthen in whole titration experiments, in addition, also can there is larger error in the judgement of titration end-point volume.
Utility model content
The purpose of this utility model solves existing buret zeroing inconvenience, the problem that experimental error is large.
The technical scheme adopted for realizing the utility model object is such, and the buret of a kind of fine adjustment zero point and titer, is made up of large volume titration part, micro-scale volume titration part and discharge portion.
Described large volume titration part comprises titration body I, addition funnel I, titration valve I and grass tube I.The tube wall of described titration body I has the opening I that connects grass tube I, the position of this opening I is positioned at the zero graduation line place of titration body I.The open at both ends of described grass tube I, its one end is communicated with described opening I.The upper end of described titration body I connects addition funnel I.The lower end of described titration body I is connected with titrating head, is provided with titration valve I between them.The bottom of described titrating head is divided into titrating head body, and top is divided into three-way interface.
Described micro-scale volume titration part comprises titration body II, addition funnel II, titration valve II and grass tube II.The tube wall of described titration body II has the opening II that connects grass tube II, the position of this opening II is positioned at the zero graduation line place of titration body II.The open at both ends of described grass tube II, its one end is communicated with described opening II.The upper end of described titration body II connects addition funnel II.The lower end of described titration body II is connected with titrating head, is provided with titration valve II between them.
Described discharge portion is between large volume titration part and micro-scale volume titration part.Described discharge portion comprises discharging tube, tapping valve and drainage hopper.The middle part of described discharging tube is provided with tapping valve.The upper end connected drainage funnel of described discharging tube.Described drainage hopper is clipped between titration body I and titration body II.The upper end of described drainage hopper is uncovered by circular cover plate shutoff.The wall of described drainage hopper has two symmetrical connectors, the position of these two connectors is concordant with the zero graduation line of titration body I, titration body II respectively.These two connectors connect grass tube I and grass tube II respectively.The lower end of described discharging tube is connected with titrating head.
Further, the zero graduation line of described titration body I and titration body II is positioned at same level position.
Further, described titration valve I, titration valve II and tapping valve are the switch valve of acid and alkali-resistance.
When using above-mentioned buret, close titration valve I, titration valve II and tapping valve, volumetric soiutions carries out liquid feeding from addition funnel I or addition funnel II, when the connector of volumetric soiutions higher than drainage hopper, open titration valve I respectively, titration valve II is exhausted bubble, after bubble is drained, close titration valve I and titration valve II, open the solution in the emptying described discharging tube of tapping valve, close tapping valve more afterwards, carry out burette test.When carrying out blank test or control test, opening titration valve II and carrying out microtitration.When carrying out the more sample determination of consumption volume, opening titration valve I and carrying out sample titration.
Technique effect of the present utility model is mathematical, and buret of the present utility model devises microtitration part, can measure the volume of blank assay, titration end-point accurately, effectively controls the experimental error in measuring; Two addition funnels, can add volumetric soiutions to each self-corresponding buret, and can accomplish the volumetric soiutions that can fill large volume buret and micro-scale volume buret from any one addition funnel liquid feeding; Automatically can regulate titration zero point simultaneously.
Accompanying drawing explanation
Fig. 1 is the structural representation of buret described in the utility model.
In figure: titration body I 1, addition funnel I 11, titration valve I 12, grass tube I 13, titration body II 2, addition funnel II 21, titration valve II 22, grass tube II 23, discharging tube 3, tapping valve 31, drainage hopper 32, circular cover plate 4, titrating head 5.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail, but should not be construed the above-mentioned subject area of the utility model and be only limitted to following embodiment.When not departing from the above-mentioned technological thought of the utility model, according to ordinary skill knowledge and customary means, making various replacement and change, all should be included in protection domain of the present utility model.
See Fig. 1, the buret of a kind of fine adjustment zero point and titer, is made up of large volume titration part (diagram right side), micro-scale volume titration part (diagram left side) and discharge portion (in the middle of diagram).
Described large volume titration part comprises titration body I 1, addition funnel I 11, the titration valve I 12 of acid and alkali-resistance and grass tube I 13.Described titration body I 1 has scale mark.The tube wall of described titration body I 1 has the opening I that connects grass tube I 13, the position of this opening I is positioned at the zero graduation line place of titration body I 1.The open at both ends of described grass tube I 13, its one end is communicated with described opening I, and the other end is communicated with drainage hopper 32.The upper end of described titration body I 1 connects addition funnel I 11.The lower end of described titration body I 1 is connected with the right side interface of titrating head 5, is provided with titration valve I 12 between them.Control titration body I 1 by the switch of titration valve I 12 whether to communicate with titrating head 5.The bottom of described titrating head 5 is divided into titrating head body, and top is divided into three-way interface.
Described micro-scale volume titration part comprises titration body II 2, addition funnel II 21, the titration valve II 22 of acid and alkali-resistance and grass tube II 23.The outer wall of described titration body II 2 has scale mark.The zero graduation line of described titration body II 2 and the zero graduation line of titration body I 1 are in same level position.The tube wall of described titration body II 2 has the opening II that connects grass tube II 23, the position of this opening II is positioned at the zero graduation line place of titration body II 2.The open at both ends of described grass tube II 23, its one end is communicated with described opening II, and the other end is communicated with drainage hopper 32.The upper end of described titration body II 2 connects addition funnel II 21.The lower end of described titration body II 2 is connected with the left side interface of titrating head 5, is provided with titration valve II 22 between them.Control titration body II 2 by the switch of titration valve II 22 whether to communicate with titrating head 5.Described titration body II 2 and titration body I 1 are all vertically arranged, the distance that between them, interval is suitable holds discharge portion.
Described discharge portion is between large volume titration part and micro-scale volume titration part.Described discharge portion comprises discharging tube 3, tapping valve 31 and drainage hopper 32.The middle part of described discharging tube 3 is provided with tapping valve 31.The upper end connected drainage funnel 32 of described discharging tube 3.Described drainage hopper 32 is clipped between titration body I 1 and titration body II 2.The upper end of described drainage hopper 32 is uncovered by the shutoff of circular cover plate 4.The wall of described drainage hopper has two symmetrical connectors, the position of these two connectors is concordant with the zero graduation line of titration body I 1, titration body II 2 respectively.The lower end of described discharging tube 3 is connected with the interface in the middle of titrating head 5.Whether communicated with titrating head 5 by the switch control rule discharging tube 3 of tapping valve 31.
Particularly, the profile of described titrating head 5 is in " trident " shape, and three mouthfuls of interfaces on it connect titration body I 1, discharging tube 3 and titration body II 2 from right to left respectively, and a branch of its underpart is titrating head body.
When using above-mentioned buret, close titration valve I 12, titration valve II 22 and tapping valve 31, volumetric soiutions carries out liquid feeding from addition funnel I 11 or addition funnel II 21, when the opening part of volumetric soiutions higher than drainage hopper 32, open titration valve I 12 respectively, titration valve II 22 is exhausted bubble, after bubble is drained, close titration valve I 12 and titration valve II 22, open solution in the emptying described discharging tube 3 of tapping valve 31 (due to drainage hopper 32 and titration body I 1, the connected entrance of titration body II 2 is in zero graduation line place, so when the solution of discharging tube 3 is drained, solution in titration body I 1 and titration body II 2 is just in zero graduation line position), close tapping valve 31 more afterwards, carry out burette test.When carrying out blank test or control test, opening titration valve II 22 and carrying out microtitration.When carrying out the more sample determination of consumption volume, opening titration valve I 12 and carrying out sample titration.
Claims (3)
1. a buret for fine adjustment zero point and titer, is characterized in that: be made up of large volume titration part, micro-scale volume titration part and discharge portion;
Described large volume titration part comprises titration body I (1), addition funnel I (11), titration valve I (12) and grass tube I (13); The tube wall of described titration body I (1) has the opening I that connects grass tube I (13), the position of this opening I is positioned at the zero graduation line place of titration body I (1); The open at both ends of described grass tube I (13), its one end is communicated with described opening I; The upper end of described titration body I (1) connects addition funnel I (11); The lower end of described titration body I (1) is connected with titrating head (5), is provided with titration valve I (12) between them; The bottom of described titrating head (5) is divided into titrating head body, and top is divided into three-way interface;
Described micro-scale volume titration part comprises titration body II (2), addition funnel II (21), titration valve II (22) and grass tube II (23); The tube wall of described titration body II (2) has the opening II that connects grass tube II (23), the position of this opening II is positioned at the zero graduation line place of titration body II (2); The open at both ends of described grass tube II (23), its one end is communicated with described opening II; The upper end of described titration body II (2) connects addition funnel II (21); The lower end of described titration body II (2) is connected with titrating head (5), is provided with titration valve II (22) between them;
Described discharge portion is between large volume titration part and micro-scale volume titration part; Described discharge portion comprises discharging tube (3), tapping valve (31) and drainage hopper (32); The middle part of described discharging tube (3) is provided with tapping valve (31); Upper end connected drainage funnel (32) of described discharging tube (3); Described drainage hopper (32) is clipped between titration body I (1) and titration body II (2); The upper end of described drainage hopper (32) is uncovered by circular cover plate (4) shutoff; The wall of described drainage hopper (32) has two symmetrical connectors, the position of these two connectors is concordant with the zero graduation line of titration body I (1), titration body II (2) respectively; These two connectors connect grass tube I (13) and grass tube II (23) respectively; The lower end of described discharging tube (3) is connected with titrating head (5).
2. the buret of a kind of fine adjustment zero point according to claim 1 and titer, is characterized in that: the zero graduation line of described titration body I (1) and titration body II (2) is positioned at same level position.
3. the buret of a kind of fine adjustment zero point according to claim 1 and titer, is characterized in that: described titration valve I (12), titration valve II (22) and tapping valve (31) are the switch valve of acid and alkali-resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520910973.9U CN205091309U (en) | 2015-11-16 | 2015-11-16 | An accurate zero point and quantitative buret adjusted |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520910973.9U CN205091309U (en) | 2015-11-16 | 2015-11-16 | An accurate zero point and quantitative buret adjusted |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205091309U true CN205091309U (en) | 2016-03-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520910973.9U Expired - Fee Related CN205091309U (en) | 2015-11-16 | 2015-11-16 | An accurate zero point and quantitative buret adjusted |
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| Country | Link |
|---|---|
| CN (1) | CN205091309U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109115942A (en) * | 2018-09-17 | 2019-01-01 | 大丰跃龙化学有限公司 | A kind of base buret |
-
2015
- 2015-11-16 CN CN201520910973.9U patent/CN205091309U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109115942A (en) * | 2018-09-17 | 2019-01-01 | 大丰跃龙化学有限公司 | A kind of base buret |
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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: 20160316 Termination date: 20171116 |
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| CF01 | Termination of patent right due to non-payment of annual fee |