CN202502080U - Novel base burette - Google Patents
Novel base burette Download PDFInfo
- Publication number
- CN202502080U CN202502080U CN2012201710803U CN201220171080U CN202502080U CN 202502080 U CN202502080 U CN 202502080U CN 2012201710803 U CN2012201710803 U CN 2012201710803U CN 201220171080 U CN201220171080 U CN 201220171080U CN 202502080 U CN202502080 U CN 202502080U
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- CN
- China
- Prior art keywords
- glass tube
- loam cake
- resin valve
- resisting resin
- reading
- 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 discloses a novel base burette, solving a problem that glass beads in the conventional base burette and a rubber tube are easy to adhere to cause operation not to be smooth and to influence a titration result through easy deterioration of alkaline liquid. The novel base burette comprises a glass tube with scales, an alkali-resisting resin valve and a pointed glass tube, wherein an O-shaped annular slot is arranged on the inner walls of an upper opening and a lower opening of the alkali-resisting resin valve respectively, an O-shaped seal ring is respectively arranged in the O-shaped annular slot, the glass tube with the scales is inserted in the upper opening of the alkali-resisting resin valve, and the pointed glass tube is inserted in the lower opening of the alkali-resisting resin valve; and the upper opening of the glass tube with the scales is further provided with an upper cover. The novel base burette disclosed by the utility model can greatly control the titration speed and ensures that the titration operation can be performed smoothly; and the alkaline liquid in the base burette is arranged under a seal environment, does not deteriorate, ensures the exactness of the titration result and avoids the waste of the alkaline liquid.
Description
Technical field
The utility model discloses a kind of chemical analysis instrument, concrete is a kind of base buret.
Background technology
Base buret is the indispensable fundamental analysis instrument of chemical laboratory, and its main body is the glass long tube of band groove, interior Sheng alkaline solution, and the lower end of glass long tube connects one section proofed sleeve, the built-in beaded glass of proofed sleeve, the proofed sleeve lower end connects one section tip glass tube.Common right-handed forefinger and thumb pinch beaded glass during use, make between itself and proofed sleeve and form the gap, and alkali lye flows out from this gap, through the whole defluent speed of alkali lye of the adjustable size of control action power, and then implement accurate titration operation; But after base buret is used a period of time, following problem can appear: 1, proofed sleeve under the effect of alkali lye, ageing of rubber, proofed sleeve and beaded glass are inter-adhesive, alkali lye does not flow out, and can not implement titration operation; Or the flexibility decrease of proofed sleeve, it is big that the gap of proofed sleeve and beaded glass becomes, and alkali lye can flow out automatically, influences the accuracy of titration results; 2, conventional base buret is in uncovered state; The interior alkali lye of containing normal concentration; This standard alkali lye is used to carry out repeatedly titration, but the uncovered placement of alkali lye meeting goes bad with carbon dioxide in air generation chemical reaction, thereby influences the accuracy of titration results; Or outwell being contained in the buret a little longer alkali lye of time, do like this and can cause unnecessary waste.
Summary of the invention
The purpose of the utility model provides a kind of novel base buret; This base buret can be controlled rate of titration preferably; Guarantee that titration operation carries out smoothly; And the alkali lye in this base buret is in the sealed environment, undergoes no deterioration, and has not only guaranteed the accuracy of titration results but also has avoided the waste of alkali lye.
For realizing the foregoing invention purpose; The technical scheme that the application adopts is: a kind of novel base buret; Comprise the glass tube of being with groove, alkaline-resisting resin valve and tip glass tube, wherein suitable for reading the and end opening inwall of alkaline-resisting resin valve is provided with O shape ring recess, built-in O-ring seals; The glass tube of band groove is inserted in alkaline-resisting resin valve suitable for reading, and the tip glass tube is inserted in the end opening of alkaline-resisting resin valve.
Preferred the application's base buret also comprises a loam cake, this loam cake or be inserted in the glass tube of band groove suitable for reading in, or be enclosed within outside the glass tube upper edge of band groove; Loam cake comprises upper and lower two top layers, wherein descends the center, top layer that projection is set, and the upper epidermis center is provided with the through hole that cooperates with projection; Fit each other between upper and lower two top layers; And upper epidermis can rotate relative to following top layer, and several open-works are set respectively on upper and lower two top layers in addition, rotates upper epidermis; Open-work on the following top layer or communicate with open-work on the upper epidermis, or covered by upper epidermis.
Be inserted in glass tube interior buret loam cake suitable for reading, the inwall suitable for reading of preferred loam cake sidewall and band groove glass tube all is provided with the frosted layer; Be enclosed within the loam cake outside the glass tube upper edge, in the preferred loam cake sidewall O-ring seal be set.
The application's beneficial effect: the application's novel base buret, adopted switch more flexibly, valve mechanism easily, the material of this valve is alkaline-resisting resin, so adopt this buret to carry out titration operation, can guarantee the accuracy of titration results; This buret also is provided with loam cake in addition, before needs carry out titration, and the upper epidermis of rotary upper cover, the open-work about making on the top layer communicates, and equates with the outer air pressure of pipe in the buret, can carry out titration operation; When titration finishes; The upper epidermis of rotary upper cover, the open-work about making on the top layer staggers each other, and then alkali lye is sealed in the pipe; Can reduce the chance that the gases such as alkali lye and carbon dioxide in air in the buret contact so to greatest extent, guarantee that alkali lye never degenerates.
Embodiment
Fig. 1 is the structural representation of the novel base buret among the embodiment 1.
Fig. 2 is the structural representation of the novel base buret among the embodiment 2.
Fig. 3 is the structural representation of loam cake.
Embodiment
Below in conjunction with accompanying drawing and concrete embodiment the application is further described.
By shown in Figure 1: a kind of novel base buret; Comprise glass tube 1, alkaline-resisting resin valve 2 and the tip glass tube 3 of being with groove; Suitable for reading and the end opening inwall of wherein alkaline-resisting resin valve 2 is provided with O shape ring recess; Built-in O-ring seals, the glass tube 1 of band groove is inserted in alkaline-resisting resin valve 2 suitable for reading, and tip glass tube 3 is inserted in the end opening of alkaline-resisting resin valve 2.What resin valve in the buret in the illustrations adopted is ball valve, and the valve of other versions also is fine in fact, such as slide valve etc.
By shown in Figure 2: present embodiment is on the basis of embodiment 1, to have increased loam cake 4 these parts; This loam cake 4 or be inserted in the glass tube 1 of band groove suitable for reading in; Or be enclosed within outside glass tube 1 upper edge of band groove; Be inserted in glass tube interior buret loam cake suitable for reading, the inwall suitable for reading of preferred loam cake sidewall and band groove glass tube all is provided with the frosted layer; Be enclosed within the loam cake outside the glass tube upper edge, in the preferred loam cake sidewall O-ring seal be set.By shown in Figure 3: said loam cake 4 comprises upper and lower two top layers, wherein descends 42 centers, top layer that projection 43 is set, and upper epidermis 41 centers are provided with the through hole that cooperates with projection 42; Fit each other between upper and lower two top layers; And upper epidermis 41 can rotate relative to following top layer 42, and several open-works 44 are set respectively on upper and lower two top layers in addition, rotates upper epidermis 41; Open-work on the following top layer 42 or communicate with open-work on the upper epidermis 41, or covered by upper epidermis 41.The application has only provided a kind of structural representation of loam cake 4, adopts the loam cake of other similar structures also to be fine in fact, as long as satisfy required function.
Claims (3)
1. novel base buret; Comprise the glass tube of being with groove, alkaline-resisting resin valve and tip glass tube; It is characterized in that: the suitable for reading and end opening inwall of said alkaline-resisting resin valve is provided with O shape ring recess; Built-in O-ring seals, the glass tube of band groove is inserted in alkaline-resisting resin valve suitable for reading, and the tip glass tube is inserted in the end opening of alkaline-resisting resin valve.
2. novel base buret according to claim 1 is characterized in that: said base buret also comprises a loam cake, this loam cake or be inserted in the band groove glass tube suitable for reading in; Or be enclosed within outside the glass tube upper edge of band groove, loam cake comprises upper and lower two top layers, wherein descends the center, top layer that projection is set; The upper epidermis center is provided with the through hole that cooperates with projection; Fit each other between upper and lower two top layers, and upper epidermis can be provided with several open-works respectively in addition relative to descending the top layer rotate on upper and lower two top layers; Rotate upper epidermis, the open-work on the open-work on the following top layer and the upper epidermis or communicate or stagger each other.
3. novel base buret according to claim 2 is characterized in that: be inserted in the glass tube interior loam cake suitable for reading of band groove, the inwall suitable for reading of loam cake sidewall and band groove glass tube all is provided with the frosted layer; Be enclosed within the loam cake outside the glass tube upper edge, in the loam cake sidewall O-ring seal be set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201710803U CN202502080U (en) | 2012-04-20 | 2012-04-20 | Novel base burette |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201710803U CN202502080U (en) | 2012-04-20 | 2012-04-20 | Novel base burette |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202502080U true CN202502080U (en) | 2012-10-24 |
Family
ID=47038691
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201710803U Expired - Fee Related CN202502080U (en) | 2012-04-20 | 2012-04-20 | Novel base burette |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202502080U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103926374A (en) * | 2014-03-30 | 2014-07-16 | 吉首大学 | Novel general burette |
-
2012
- 2012-04-20 CN CN2012201710803U patent/CN202502080U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103926374A (en) * | 2014-03-30 | 2014-07-16 | 吉首大学 | Novel general burette |
| CN103926374B (en) * | 2014-03-30 | 2015-09-16 | 吉首大学 | Novel universal buret |
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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: 20121024 Termination date: 20140420 |