CN202599923U - Acid-base dual-purpose burette - Google Patents
Acid-base dual-purpose burette Download PDFInfo
- Publication number
- CN202599923U CN202599923U CN 201220234584 CN201220234584U CN202599923U CN 202599923 U CN202599923 U CN 202599923U CN 201220234584 CN201220234584 CN 201220234584 CN 201220234584 U CN201220234584 U CN 201220234584U CN 202599923 U CN202599923 U CN 202599923U
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- Prior art keywords
- sharp
- acid
- nozzle tube
- titration
- base
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Abstract
The utility model belongs to the field of experimental instruments for chemical titration analysis, and particularly relates to an acid-base dual-purpose burette. The acid-base dual-purpose burette comprises a sharp-nozzle tube, an acid-base-resistant floating body and a magnet, wherein the acid-base-resistant floating body is located in the sharp-nozzle tube, scales for measuring the volume of liquid are arranged on the upper part of the sharp-nozzle tube, a threads is formed on the lower part of the sharp-nozzle tube, the magnet is sleeved on the sharp-nozzle tube and in threaded connection with the sharp-nozzle tube, an iron block matched with the magnet is arranged in the top of the acid-base-resistant floating body, the bottom of the acid-base-resistant floating body is a cone, the cone is matched with a sharp nozzle on the bottom of the sharp-nozzle tube, and a wedge-shaped inclined titration surface is arranged on the bottom of the sharp nozzle. The burette is simple and reasonable in structure, convenient to operate and unlimited in application range, thus achieving being acid-base dual-purpose; during titration, a purpose of accurately transferring and taking liquid drops can be achieved by tightly attaching the wedge-shaped inclined titration surface on the bottom of the sharp nozzle with a titration bottle or a beaker, thus reducing titration errors and improving experimental accuracy; and the bottom cone of the floating body can be fitted with the inner conical surface of the sharp nozzle of the sharp-nozzle tube so as to seal liquid and preventing the liquid from flowing out.
Description
Technical field
The utility model relates to the dual-purpose buret of a kind of soda acid, belongs to chemical titration analysis experimental apparatus field.
Background technology
Buret commonly used has two kinds of acid buret and base burets in the chemical titration analysis experiment at present.Acid buret is made up of liquid-measuring tube, glass piston control liquid device, sharp nozzle tube three parts, and glass piston meets at right angles with liquid-measuring tube, sharp nozzle tube and is fixedly connected; Base buret is made up of liquid-measuring tube, rubber pipe box beaded glass control liquid device, sharp nozzle tube three parts.Because acid buret has glass piston, base buret has the rubber pipe box, so acid buret can not contain alkali, and base buret can not be contained acid, and traditional buret usable range is restricted.And the sharp gonys portion of sharp nozzle tube is concordant in the common buret, in use has small amount of liquid usually and is trapped in tube head, need it be transferred in the following solution through means such as adherent; When requiring to pipette half, pipette in the process adherent, operating personnel rely on self experience to be handled usually; Everyone is different to the control time of drop, and the size differences of droplet size is bigger, like overlong time; Possibly cause the integral drip drop all to pipette, import positive error; And deficiency of time, or pipette less than, or still not forming complete drop is promptly pipetted the appearance of negative error.Because rectification personnel and the practical operation personnel of surveying instrument have certain difference, and operating personnel's operating habit is different, therefore, pipette and data report in, will produce artificial error, test for microtitration especially, its error is very important.
The utility model content
According to above deficiency of the prior art, the technical matters that the utility model will solve is: provide a kind of and can reduce titration error, raising experimental precision and the simple and reasonable dual-purpose buret of soda acid.
The utility model solves the technical scheme that its technical matters adopted: the dual-purpose buret of described soda acid; Comprise sharp nozzle tube, acid and alkali-resistance buoyancy aid and magnet, the acid and alkali-resistance buoyancy aid is arranged in sharp nozzle tube, and sharp nozzle tube top has the scale of measuring liquid volume; The bottom has screw thread; Magnet is sleeved on the sharp nozzle tube and with sharp nozzle tube and is threaded, and it is characterized in that: the acid and alkali-resistance buoyancy aid is provided with the iron block that cooperates with magnet in the top, and the bottom of acid and alkali-resistance buoyancy aid is a cone; The sharp mouth of cone and sharp nozzle tube bottom matches, and sharp gonys portion has lozenges.
The lozenges of described sharp gonys portion and the angle of sharp nozzle tube center line are 45 ~ 60 °, through the titration inclined-plane is attached on conical flask or the beaker inwall, can realize accurately pipetting of drop.
During use, the acid and alkali-resistance buoyancy aid is put into, poured out from the sharp nozzle tube upper end, magnet is from the precession of sharp nozzle tube lower end, back-out.The dual-purpose buret of this soda acid adopts magnetic principles; Through be sleeved on the outer magnet of sharp nozzle tube up and down the buoyancy aid (band iron block) that drives in the sharp nozzle tube of turn move up and down; Thereby can conveniently control the liquid outflow amount of sharp nozzle tube; When titration, the lozenges of Jian Zui bottom is adjacent to following conical flask or beaker, can reach the purpose that accurately pipettes drop.In addition, the bottom cone of buoyancy aid can coincide with the inner conical surface of sharp nozzle tube point mouth, when identical, can lock solution flow out.
The beneficial effect that the utility model had is:
The dual-purpose buret of this soda acid adopts magnetic principles; Through be sleeved on the outer magnet of sharp nozzle tube up and down the buoyancy aid (band iron block) that drives in the sharp nozzle tube of turn move up and down; Thereby the liquid outflow amount of control sharp nozzle tube; Simple and reasonable, easy to operate, and the scope of application is unrestricted, has reached acid, the dual-purpose purpose of alkali; When titration, the lozenges of Jian Zui bottom is adjacent to following conical flask or beaker, can reach the purpose that accurately pipettes drop, thereby reduce titration error, improve experimental precision; The bottom cone of buoyancy aid can coincide with the inner conical surface of sharp nozzle tube point mouth, when identical, can flow out by sealing liquid.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Among the figure: 1, sharp nozzle tube; 2, acid and alkali-resistance buoyancy aid; 3, iron block; 4, magnet; 5, cone; 6, Jian Zui; 7, lozenges.
Embodiment
Below in conjunction with accompanying drawing the embodiment of the utility model is done and to further describe:
As shown in Figure 1, the dual-purpose buret of soda acid comprises sharp nozzle tube 1, acid and alkali-resistance buoyancy aid 2 and magnet 4; Acid and alkali-resistance buoyancy aid 2 is arranged in sharp nozzle tube 1, and sharp nozzle tube 1 top has the scale of measuring liquid volume, and the bottom has screw thread; Magnet 4 is sleeved on the sharp mouth 1 and with sharp nozzle tube 1 and is threaded, and is provided with the iron block 3 that cooperates with magnet 4 in acid and alkali-resistance buoyancy aid 2 tops, and the bottom of acid and alkali-resistance buoyancy aid 2 is a cone 5; Cone 5 matches with the sharp mouth 6 of sharp nozzle tube 1 bottom, and sharp mouth 6 bottoms have lozenges 7.
During use, acid and alkali-resistance buoyancy aid 2 is put into, poured out from sharp nozzle tube 1 upper end, magnet 4 is from sharp nozzle tube 1 lower end precession, back-out.The dual-purpose buret employing of this soda acid magnetic principles moves up and down through being sleeved on the sharp nozzle tube 1 outer magnet buoyancy aid (band iron block) that turn drives in the sharp nozzle tube 1 about in the of 4, thereby can conveniently control the liquid outflow amount of sharp nozzle tube.Replaced conventional glass piston control liquid method and rubber pipe box beaded glass control liquid method through this control liquid method, simple and reasonable, easy to operate, and also the scope of application is unrestricted, has reached acid, the dual-purpose purpose of alkali.
Wherein, the lozenges 7 of sharp mouth 6 bottoms can directly adopt mould to accomplish when producing buret, also can oblique the cutting of sharp gonys portion that have buret now be formed lozenges 7, and lozenges 7 is 45 ~ 60 ° with the angle of sharp nozzle tube center line.When titration, lozenges 7 is adjacent to following conical flask or beaker, reach the purpose that accurately pipettes drop, reduce titration error, improve experimental precision.
Claims (2)
1. dual-purpose buret of soda acid; Comprise sharp nozzle tube (1), acid and alkali-resistance buoyancy aid (2) and magnet (4), acid and alkali-resistance buoyancy aid (2) is arranged in sharp nozzle tube (1), and sharp nozzle tube (1) top has the scale of measuring liquid volume; The bottom has screw thread; Magnet (4) is sleeved on sharp nozzle tube (1) and upward and with sharp nozzle tube (1) is threaded, and it is characterized in that: be provided with the iron block (3) that cooperates with magnet (4) in acid and alkali-resistance buoyancy aid (2) top, the bottom of acid and alkali-resistance buoyancy aid (2) is cone (5); Cone (5) matches with the sharp mouth (6) of sharp nozzle tube (1) bottom, and sharp mouth (6) bottom has lozenges (7).
2. the dual-purpose buret of soda acid according to claim 1 is characterized in that: the lozenges (7) of described sharp mouth (6) bottom is 45 ~ 60 ° with the angle of sharp nozzle tube (1) center line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220234584 CN202599923U (en) | 2012-05-23 | 2012-05-23 | Acid-base dual-purpose burette |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220234584 CN202599923U (en) | 2012-05-23 | 2012-05-23 | Acid-base dual-purpose burette |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202599923U true CN202599923U (en) | 2012-12-12 |
Family
ID=47317453
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220234584 Expired - Fee Related CN202599923U (en) | 2012-05-23 | 2012-05-23 | Acid-base dual-purpose burette |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202599923U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111665322A (en) * | 2020-07-21 | 2020-09-15 | 韩笑 | Precision constant burette for inspection and detection center |
-
2012
- 2012-05-23 CN CN 201220234584 patent/CN202599923U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111665322A (en) * | 2020-07-21 | 2020-09-15 | 韩笑 | Precision constant burette for inspection and detection center |
| CN111665322B (en) * | 2020-07-21 | 2022-07-01 | 韩笑 | Precision constant burette for inspection and detection center |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121212 Termination date: 20130523 |