CN207521027U - The liquid feeding and volume fixing device of a kind of volumetric flask - Google Patents
The liquid feeding and volume fixing device of a kind of volumetric flask Download PDFInfo
- Publication number
- CN207521027U CN207521027U CN201721559673.6U CN201721559673U CN207521027U CN 207521027 U CN207521027 U CN 207521027U CN 201721559673 U CN201721559673 U CN 201721559673U CN 207521027 U CN207521027 U CN 207521027U
- Authority
- CN
- China
- Prior art keywords
- pedestal
- volumetric flask
- screw thread
- funnel
- fixing device
- 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 provides the liquid feeding and volume fixing device of a kind of volumetric flask, including a pedestal, the screw thread iron vertical with the pedestal is provided on pedestal, connect with screw by screw thread iron hoop that there are one funnel stands on screw thread iron, conical hopper is installed on funnel stand, the filler neck of conical hopper is set downward, is provided with to control the glass valve that liquid flows in filler neck on filler neck；The funnel body of conical hopper includes cylinder and conical structure, cylinder height is the 1/2 of cone height, on pedestal, positioned at the setting of the lower section of conical hopper, there are one volumetric flasks, and volumetric flask bottom, which is located at, is fixed with one piece of big round rubber gasket of diameter specific capacity bottle base diameter on pedestal.
Description
Technical field
The utility model is related to chemical experiment clothing arts, and in particular to the liquid feeding and volume fixing device of a kind of volumetric flask.
Background technology
Volumetric flask is the fine instrument for accurately preparing certain substance withdrawl syndrome solution, is that Biochemistry Experiment etc. is real
One of most common container in testing is mainly used for preparing standard solution, accurate dilutions solution and prepares sample solution, analyzing
General volumetric flask of also commonly using carries out constant volume to standard substance, detection sample extraction object in test.Nowadays to volumetric flask liquid feeding and
In constant volume process, glass bar drainage need to be used, it is easy to which liquid feeding excessive velocities occur leads excessive velocities when solution spillage, constant volume
Cause to be more than that constant volume graduation mark makes the failure of an experiment or misoperation so that volumetric flask slip situation about toppling over, hinder experiment into
Row.
Utility model content
The purpose of this utility model is to provide the liquid feedings and volume fixing device of a kind of volumetric flask, can effectively prevent liquid feeding
When liquid is made very much to splash out or be more than that graduation mark operates when leading to the failure of an experiment and constant volume during constant volume soon with glass bar drainage speed
It is improper so that volumetric flask landing topple over happen, be smoothed out experiment, ensure the accuracy of experimental result.
To achieve the above object, the utility model adopts the following technical solution：
Including a pedestal, the spiral shell vertical with the pedestal is provided on pedestal for the liquid feeding and volume fixing device of a kind of volumetric flask
Line iron is connected with screw by screw thread iron hoop on screw thread iron there are one funnel stand, is equipped with conical hopper on funnel stand, is bored
The filler neck of shape funnel is set downward, is provided with to control the glass valve that liquid flows in filler neck on filler neck；Taper
The funnel body of funnel includes cylinder and conical structure, and cylinder height is the 1/2 of cone height, on pedestal, is located at
There are one volumetric flasks for the lower section setting of conical hopper, and volumetric flask bottom, which is located on pedestal, is fixed with one piece of diameter specific capacity bottom of bottle portion
The big round rubber gasket of diameter.
Fixed rubber sheet gasket is used for consolidating volumetric flask on pedestal, increases the frictional force between volumetric flask and pedestal, enhancing
The antiskid effect of device.
The design that funnel body includes cylinder and conical structure is to be able to hold more liquid, is also avoided that
Stoste splashes out situation when pouring into funnel.
Screw thread iron hoop can move up and down on screw thread iron, realize the lifting of funnel stand.
Preferably, the conical hopper is glass material.
Preferably, the funnel stand is stainless steel making.
It is further preferred that the pedestal is stainless steel.
It is further preferred that the screw thread iron lower end is welded on pedestal.
The beneficial effects of the utility model：
(1) the utility model has the advantages that stabilized structure is simple and convenient to operate.
(2) the utility model uses the funnel with glass valve device that traditional glass bar is replaced to drain, and passes through adjusting
Glass valve carrys out the liquid feeding and constant volume of control capability bottle, and experimenter is avoided to drain liquid feeding and constant volume process middling speed with glass bar
Degree causes very much liquid to splash out and constant volume failure soon.
(3) this experiment novel improved funnel shaped, splashes out when can pour into funnel to avoid liquid using conical hopper
Situation ensures the accuracy of experiment.
(4) the utility model is provided with rubber sheet gasket on the pedestal for placing volumetric flask, increases the antiskid effect of pedestal,
Prevent volumetric flask from surprisingly toppling over or falling from pedestal.
(5) height-adjustable funnel stand is set in the utility model, it is simple and convenient, suitable for the appearance of plurality of specifications
Measuring bottle.
Description of the drawings
Specific embodiment of the present utility model is described in further detail below in conjunction with the accompanying drawings.
Fig. 1 is the overall structure diagram of the utility model.
Fig. 2 is screw thread iron hoop and screw fit structure diagram.
Fig. 3 is the structure diagram of pedestal.
Wherein, 1-conical hopper, 2-funnel stand, 3-glass valve, 4-pedestal, 5-screw thread iron hoop, 6-screw thread iron
Bar, 7-screw, 8-screw thread, 9-rubber sheet gasket.
Specific embodiment
The utility model is described in further detail with specific embodiment below in conjunction with the accompanying drawings.
The liquid feeding and volume fixing device of a kind of volumetric flask shown in Fig. 1 including a pedestal 4, are provided with and the pedestal on pedestal
Vertical screw thread iron 6, by screw thread iron hoop 5 and the connection of screw 7 there are one funnel stand 2 on screw thread iron, funnel is put during use
In on funnel stand 2.
The funnel body of conical hopper 1 includes cylinder and conical structure, it is contemplated that prevents the stoste for pouring into funnel from splashing
Go out and facilitated with washing lotion, cylinder height is the 1/2 of cone height, is provided with to control leakage on the filler neck of conical hopper 1
The glass valve 3 that liquid flows in bucket neck.
There are one volumetric flask on pedestal 4, positioned at the setting of the lower section of conical hopper, volumetric flask bottom is located on pedestal 4 fixed
The round rubber gasket 9 for having one piece of diameter specific capacity bottle base diameter slightly larger, plays the role of anti-skidding.
Cross bar in funnel stand 2 is welded with screw thread iron hoop 5, and screw thread iron hoop 5 with screw 7 by being tightened in screw thread iron
On 6, the interior diameter of screw thread iron hoop 5 is leaked slightly larger than the diameter of bottom surface on screw thread iron 6 when being adjusted according to volumetric flask actual height
During ladder height, screw thread iron hoop 5 is enable to be moved up and down on screw thread iron 6 by unscrewing screw 7,6 bottom end of screw thread iron and bottom
Seat 4 welds.
During the use of the liquid feeding and volume fixing device of this volumetric flask, volumetric flask to be used is placed on pedestal 4, root
1 height of conical hopper is determined according to capacity bottle height, and then adjusts 2 height of funnel stand, and screw thread iron hoop 5 is passed through into the upper of screw thread iron 6
End, moves on to from bar upper end and has determined that height and position, 7 precession iron hoop circular hole of screw, until screw 7 is contacted and supported with screw thread iron 6
Firmly, can not precession again, illustrate to have screwed, screw thread iron hoop 5 is fixed on screw thread iron 6 at this time, and funnel stand 2 is fixed.Taper is leaked
Bucket 1 is placed on funnel stand 2, is noticed that volumetric flask inner wall is close at filler neck tip, is opened glass valve 3, poured into conical hopper 1
Stoste pays attention to controlling the degree of falling liquid speed, ensures that liquid does not spill over funnel, treat that stoste is all transferred in volumetric flask, utilize distilled water
Wash bottle will remain stoste and clean on hopper walls, flow into volumetric flask.Glass valve 3 is closed, distilled water is added in into funnel, is adjusted
Glass valve 3 controls the rate that flows down of distilled water, when especially will be close to graduation mark to liquid level, need to pay special attention to liquid level position and
Adjust glass valve 3, accurate constant volume.If volumetric flask is less with the distilled water needed for liquid, be as possible when pouring into stoste to funnel
Stoste and the contact area of hopper walls are reduced, residual stoste is reduced, ensures that stoste is fully transferred in volumetric flask before constant volume.
Above is only the preferred embodiment of the utility model, it is noted that for those of ordinary skill in the art
For, under the premise of not departing from the utility model and creating design, various modifications and improvements can be made, these belong to this
The protection domain of utility model.
Claims (5)
1. the liquid feeding and volume fixing device of a kind of volumetric flask, it is characterised in that：Including a pedestal, it is provided with and the pedestal on pedestal
Vertical screw thread iron is connected with screw by screw thread iron hoop on screw thread iron there are one funnel stand, and cone is equipped on funnel stand
Shape funnel, the filler neck of conical hopper are set downward, are provided with to control the glass that liquid flows in filler neck on filler neck
Valve；The funnel body of conical hopper include cylinder and conical structure, cylinder height be cone height 1/2, bottom
On seat, positioned at the setting of the lower section of conical hopper, there are one volumetric flasks, and volumetric flask bottom, which is located on pedestal, is fixed with one piece of diameter ratio
The big round rubber gasket of volumetric flask base diameter.
2. the liquid feeding and volume fixing device of a kind of volumetric flask according to claim 1, it is characterised in that：The conical hopper is
Glass material.
3. the liquid feeding and volume fixing device of a kind of volumetric flask according to claim 1, it is characterised in that：The funnel stand is not
Become rusty steel making.
4. the liquid feeding and volume fixing device of a kind of volumetric flask according to claim 3, it is characterised in that：The pedestal is stainless
Steel material.
5. the liquid feeding and volume fixing device of a kind of volumetric flask according to claim 4, it is characterised in that：Under the screw thread iron
End is welded on pedestal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721559673.6U CN207521027U (en) | 2017-11-20 | 2017-11-20 | The liquid feeding and volume fixing device of a kind of volumetric flask |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721559673.6U CN207521027U (en) | 2017-11-20 | 2017-11-20 | The liquid feeding and volume fixing device of a kind of volumetric flask |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207521027U true CN207521027U (en) | 2018-06-22 |
Family
ID=62583098
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721559673.6U Expired - Fee Related CN207521027U (en) | 2017-11-20 | 2017-11-20 | The liquid feeding and volume fixing device of a kind of volumetric flask |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207521027U (en) |
-
2017
- 2017-11-20 CN CN201721559673.6U patent/CN207521027U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180622 Termination date: 20181120 |