CN203630106U - Alkali burette - Google Patents
Alkali burette Download PDFInfo
- Publication number
- CN203630106U CN203630106U CN201320823969.XU CN201320823969U CN203630106U CN 203630106 U CN203630106 U CN 203630106U CN 201320823969 U CN201320823969 U CN 201320823969U CN 203630106 U CN203630106 U CN 203630106U
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- CN
- China
- Prior art keywords
- glass
- tube
- rubber tube
- rubber
- tip
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model specifically relates to an alkali burette, and belongs to the field of experimental apparatuses. The alkali burette comprises a cylindrical glass tube with scales, a rubber tube, a glass ball and a tipped glass tube; the lower end of the cylindrical glass tube is in sealing connection with one end of the rubber tube, and the other end of the rubber tube is in the sealing connection with the tipped glass tube; the glass ball is located in the rubber tube; protuberances of which the height is one third of the inner radius of the rubber tube are arranged as a loop on the inner wall of the rubber tube between the glass ball and the tipped glass tube. With the adoption of the alkali burette, the tipped glass tube can be effectively prevented from being edged out by the glass ball; the operation precision can be improved; in addition, the structure is simple, and the operation is convenient.
Description
Technical field
The utility model belongs to experimental apparatus field, specifically, relates to a kind of base buret.
Background technology
Base buret is a kind of accurate instrument that is used for weighing aqueous chemical medicine conventional in chemical experiment, and its formation mainly comprises is with graduated cylindrical glass pipe, beaded glass, rubber tube and tip glass tube four parts.In laboratory, the joint portion of the main base buret rubber tube part using and tip glass tube part is not firm now, and in the time of operator's improper use, beaded glass easily squeezes tip glass tube to come off, thereby has affected experiment process.
Utility model content
For solving the problems of the technologies described above, the utility model proposes and a kind ofly can effectively prevent that beaded glass from squeezing tip glass tube the base buret that comes off.
Base buret described in the utility model, comprise cylindrical glass pipe, rubber tube, beaded glass and tip glass tube with scale, cylindrical glass pipe lower end and rubber tube one end are tightly connected, the rubber tube other end and tip glass tube are tightly connected, beaded glass is positioned at rubber tube, and the rubber tube inwall between beaded glass and tip glass tube is provided with a circle projection.
Further, described rising height is 1/3rd of rubber tube inside radius.
When use, aqueous chemical medicine is added in the import above cylindrical glass pipe, then base buret is placed on iron stand, and clamps the cylindrical glass tube portion of base buret with iron clamp, pinches glass bead with hand, controls the titration of medicine.Projection on rubber tube inwall can effectively prevent that glass glass bead scope of activities is excessive, even tip glass tube is squeezed to the generation of obscission.
Use the utility model base buret can effectively prevent that beaded glass from squeezing tip glass tube to come off, reduce error, and simple in structure, easy to operate.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is that the A of Fig. 1 is to cut-open view;
Wherein, 1, cylindrical glass pipe; 2, rubber tube; 3, beaded glass; 4, tip glass tube; 5, projection.
Embodiment
Illustrate the utility model below in conjunction with drawings and Examples.
As shown in Figure 1 and Figure 2, a kind of base buret, comprise cylindrical glass pipe 1, rubber tube 2, beaded glass 3 and tip glass tube 4 with scale, cylindrical glass pipe 1 lower end and rubber tube 2 one end are tightly connected, rubber tube 2 other ends and tip glass tube 4 are tightly connected, beaded glass is positioned at rubber tube 2, and rubber tube 2 inwalls between beaded glass 3 and tip glass tube 4 are provided with a circle projection 5.Wherein projection 5 is highly 1/3rd of rubber tube 2 inside radiuss.
Claims (2)
1. a base buret, comprise cylindrical glass pipe (1), rubber tube (2), beaded glass (3) and tip glass tube (4) with scale, described cylindrical glass pipe (1) lower end and rubber tube (2) one end are tightly connected, described rubber tube (2) other end and tip glass tube (4) are tightly connected, described beaded glass is positioned at rubber tube (2), it is characterized in that: rubber tube (2) inwall between described beaded glass (3) and tip glass tube (4) is provided with a circle projection (5).
2. base buret according to claim 1, is characterized in that: described projection (5) is highly 1/3rd of rubber tube (2) inside radius.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320823969.XU CN203630106U (en) | 2013-12-13 | 2013-12-13 | Alkali burette |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320823969.XU CN203630106U (en) | 2013-12-13 | 2013-12-13 | Alkali burette |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203630106U true CN203630106U (en) | 2014-06-04 |
Family
ID=50816569
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320823969.XU Expired - Fee Related CN203630106U (en) | 2013-12-13 | 2013-12-13 | Alkali burette |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203630106U (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 |
-
2013
- 2013-12-13 CN CN201320823969.XU patent/CN203630106U/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: 20140604 Termination date: 20141213 |
|
| EXPY | Termination of patent right or utility model |