CN205235996U - Easy operation moves liquid buret - Google Patents
Easy operation moves liquid buret Download PDFInfo
- Publication number
- CN205235996U CN205235996U CN201521032918.0U CN201521032918U CN205235996U CN 205235996 U CN205235996 U CN 205235996U CN 201521032918 U CN201521032918 U CN 201521032918U CN 205235996 U CN205235996 U CN 205235996U
- Authority
- CN
- China
- Prior art keywords
- pressure release
- pressure relief
- constant current
- piece
- body top
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- Expired - Fee Related
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Abstract
The utility model discloses an easy operation moves liquid buret, scale mark on body and body lateral wall, body bottom are sharp mouth and appear, the gas port has been seted up apart from the lateral wall of top 110 -18 department on to the body, the body top is sealed, the body top is provided with the fast pressure relief device of constant current, the fast pressure relief device of this constant current is including the pressure release pole that passes body top and vertical setting, there is the oblate sealed dish of pressing piece and disc the top of pressure release pole and bottom rigid coupling respectively, vertically set up the pressure release groove on the pressure release pole outer wall, the spring is established to the cover on the pressure release pole, push up respectively at the lower surface of pressing the piece and the upper surface on body top the top of spring and bottom. The utility model discloses the constant current fast -release tapping body can be realized moreover to the liquid of not only being convenient for absorb, and easy operation improves the measuring precision, can realize two kinds of functions in pipette and the buret.
Description
Technical field
The utility model relates to a kind of experimental tool, relates in particular to a kind of burette that moves easy to operate.
Background technology
Buret and pipette are all the experimental tools for accurately measuring liquid, buret normally carries out the acid-base value of titration sample by the rubber tube (base buret) of operation glass piston (acid buret) and built-in glass marble, its rate of titration is difficult to control, stability is not good enough, often occurs causing because titration is too fast the situation of postcritical; Pipette is accurately to draw the also instrument of transfer liquid, conventionally coordinate ear washing bulb to carry out imbitition, the air entry of common pipette is on the top of body, when observation is by imbitition liquid level, arm to be lifted and could operate ear washing bulb, easily cause fatigue, cause stability decreases, and then impact moves liquid precision.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of burette that moves easy to operate, is not only convenient to imbitition, and can realize constant current speed releasing liquid, simple to operate, improves the precision of measuring, and can realize two kinds of functions of pipette and buret.
To achieve these goals, technical solution adopted in the utility model is: a kind of burette that moves easy to operate, comprise the graduation mark on body and tube wall, body bottom is sharp mouth shape, described body offers gas port on the sidewall at 1/10-1/8 place, top, body top closure, body top is provided with constant current speed pressure relief device, this constant current speed pressure relief device comprises through body top and the pressure release bar vertically arranging, the top of pressure release bar and bottom are connected with respectively oblate by piece and discoidal seal disc, on pressure release bar outer wall, longitudinally offer gas pressure relief slot, sheathed spring on pressure release bar, the top of spring and bottom withstand on respectively by the upper surface on the lower surface of piece and body top.
As a kind of optimal technical scheme of the present utility model, the width of described gas pressure relief slot narrows from the top down gradually, vertically runs through described and offers screw by piece, arranges speed adjustment screw in screw.
As a kind of optimal technical scheme of the present utility model, the lower surface on described body top is provided with the O-ring seal mating with described seal disc.
As a kind of optimal technical scheme of the present utility model, described gas pressure relief slot is at least one.
Adopt the beneficial effect that produces of technique scheme to be: gas port of the present utility model is arranged on body side, that in the time observing imbitition liquid level, avoids that laboratory technician's arm lifts is too high, improves stability; In addition, set fixing intake velocity by the gas pressure relief slot on pressure release bar, thereby reach constant current speed releasing liquid, improve the precision of measuring.
Brief description of the drawings
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Fig. 1 is the local amplification view on the utility model body top.
Fig. 2 is overall structure cutaway view of the present utility model.
Fig. 3 is the front view of the utility model gas pressure relief slot.
In figure: 1, body 2, gas port 3, constant current speed pressure relief device 31, pressure release bar 32, press piece 33, seal disc 34, gas pressure relief slot 35, spring 36, screw 37, speed adjustment screw 38, O-ring seal.
Detailed description of the invention
Referring to accompanying drawing 1-3, the structure of a detailed description of the invention of the utility model comprises the graduation mark on body 1 and body 1 sidewall, body 1 bottom is sharp mouth shape, described body 1 offers gas port 2 on the sidewall at 1/10-1/8 place, top, body 1 top closure, body 1 top is provided with constant current speed pressure relief device 3, this constant current speed pressure relief device 3 comprises through body 1 top and the pressure release bar 31 vertically arranging, the top of pressure release bar 31 and bottom are connected with respectively oblate by piece 32 and discoidal seal disc 33, on pressure release bar 31 outer walls, longitudinally offer gas pressure relief slot 34, sheathed spring 35 on pressure release bar 31, the top of spring 35 and bottom withstand on respectively by the upper surface on the lower surface of piece 32 and body 1 top.
The width of described gas pressure relief slot 34 narrows from the top down gradually, vertically runs through described and offers screw 36 by piece 32, arranges speed adjustment screw 37 in screw 36.
The lower surface on described body 1 top is provided with the O-ring seal 38 mating with described seal disc 33.
Described gas pressure relief slot 34 is four.
Operation principle of the present utility model is: first, the utility model can use as pipette, when use, aim at gas port 2 with ear washing bulb air-breathing, the interior generation negative pressure of body 1, sucks liquid in body 1, because gas port 2 is arranged on body 1 side, so that can avoid in observation that laboratory technician's arm lifts during by imbitition liquid level is too high, reduces sense of fatigue, improves stability; And in transfer process, be convenient to press gas port 2, while needing releasing liquid, unclamp gas port or maintenance and pin gas port and press by piece simultaneously.
Secondly, the utility model can use as buret, according to characteristic of experiment, the protrusion length that first regulates speed adjustment screw 37, it is longer that speed adjustment screw 37 protrudes length, and the amplitude that can move down by piece 32 is less, the air inlet speed of gas pressure relief slot 34 is less, and the flow velocity that discharges titrating solution is also slower; When use, first draw titrating solution to body 1 with ear washing bulb, then press...with one's finger and push down gas port 2, in the time that moving to sample top, can press completely by piece 32 body 1, make liquid carry out titration according to fixed flow rate, unclamp by piece 32 and can complete titration work when sample acid-base value arrives when color change appears in critical point. Owing to setting fixing flow velocity according to characteristic of experiment before titration, so titration process is more confident, stability is better, and titration precision is higher.
In addition, while use as buret, titrating solution does not contact constant current speed pressure relief device 3, so can be common to acid and alkaline titrating solution.
Foregoing description only proposes as the enforceable technical scheme of the utility model, not as the Single restriction condition to its technical scheme itself.
Claims (4)
1. the burette that moves easy to operate, comprise the graduation mark on body and tube wall, body bottom is sharp mouth shape, it is characterized in that: described body offers gas port on the sidewall at 1/10-1/8 place, top, body top closure, body top is provided with constant current speed pressure relief device, this constant current speed pressure relief device comprises through body top and the pressure release bar vertically arranging, the top of pressure release bar and bottom are connected with respectively oblate by piece and discoidal seal disc, on pressure release bar outer wall, longitudinally offer gas pressure relief slot, sheathed spring on pressure release bar, the top of spring and bottom withstand on respectively by the upper surface on the lower surface of piece and body top.
2. the burette that moves easy to operate according to claim 1, is characterized in that: the width of described gas pressure relief slot narrows from the top down gradually, vertically runs through described and offers screw by piece, arranges speed adjustment screw in screw.
3. the burette that moves easy to operate according to claim 2, is characterized in that: the lower surface on described body top is provided with the O-ring seal mating with described seal disc.
4. according to the burette that moves easy to operate described in claim 1 or 2 or 3, it is characterized in that: described gas pressure relief slot is at least one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521032918.0U CN205235996U (en) | 2015-12-14 | 2015-12-14 | Easy operation moves liquid buret |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521032918.0U CN205235996U (en) | 2015-12-14 | 2015-12-14 | Easy operation moves liquid buret |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205235996U true CN205235996U (en) | 2016-05-18 |
Family
ID=55935075
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521032918.0U Expired - Fee Related CN205235996U (en) | 2015-12-14 | 2015-12-14 | Easy operation moves liquid buret |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205235996U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107915357A (en) * | 2017-10-18 | 2018-04-17 | 荆门市格林美新材料有限公司 | A kind of chemical sewage treatment device |
-
2015
- 2015-12-14 CN CN201521032918.0U patent/CN205235996U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107915357A (en) * | 2017-10-18 | 2018-04-17 | 荆门市格林美新材料有限公司 | A kind of chemical sewage treatment device |
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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: 20160518 Termination date: 20161214 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |