CN206793698U - A kind of rubber head dropper - Google Patents
A kind of rubber head dropper Download PDFInfo
- Publication number
- CN206793698U CN206793698U CN201720598709.5U CN201720598709U CN206793698U CN 206793698 U CN206793698 U CN 206793698U CN 201720598709 U CN201720598709 U CN 201720598709U CN 206793698 U CN206793698 U CN 206793698U
- Authority
- CN
- China
- Prior art keywords
- glass tube
- rubber head
- plugging device
- upper limit
- head dropper
- 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
Links
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- Closures For Containers (AREA)
Abstract
The utility model discloses a kind of rubber head dropper, the glass tube being connected including rubber head and with the rubber head, slided on the glass tube and be provided with a plugging device, the plugging device has an axially extending bore, and lower end is in cone-shaped, the inwall of the axially extending bore is provided with the upper limit ring of annular, and the lower end of the glass tube is provided with the lower limit projection for matching and using with the upper limit ring.The utility model, plugging device can freely slide up and down on glass tube, when taking liquid and liquid feeding can automatic sealing package block reagent bottle or test tube mouth, the end of glass tube again can be in automatic retraction plugging device during liquid relief, harmful substance volatilization is greatly reduced, improves safety guarantee.
Description
Technical field
It the utility model is related to stationery, and in particular to a kind of rubber head dropper.
Background technology
Some volatile, strong and stimulatings, poisonous and harmful liquid are usually used in chemical experiment, is taken with common rubber head dropper
Can all there are a large amount of harmful substances to volatilize during liquid, liquid relief and liquid feeding, it is real to influence the health of experimenter, particularly class demonstration
Test, the influence to teachers and students' health is particularly acute.
Utility model content
Technical problem to be solved in the utility model be common rubber head dropper during liquid, liquid relief and liquid feeding is taken,
It is poisonous and harmful to evaporate, the problem of influenceing the health of experimenter.
In order to solve the above-mentioned technical problem, technical scheme is to provide a kind of rubber head dropper used by the utility model, bag
Rubber head and the glass tube being connected with the rubber head are included, is slided on the glass tube and is provided with a plugging device, the plugging device
With an axially extending bore, and lower end is in cone-shaped, upper limit ring of the inwall of the axially extending bore provided with annular, the glass
The lower end of glass pipe is provided with the lower limit projection for matching and using with the upper limit ring.
In such scheme, the upper limit ring in a ring, is made up of the rubber of antiacid alkali, and inwall has screw thread knot
Structure.
In such scheme, the plugging device is made up of soft rubber.
In such scheme, the lower limit is raised to be and the integrally formed multiple outer salient points of the glass tube.
A bowl-type gum cover is also arranged with such scheme, on the glass tube, Open Side Down for the bowl-type gum cover.
The utility model, plugging device can on glass tube slidably, when taking liquid and liquid feeding can automatic sealing package block examination
Agent bottle or test tube mouth, the end of glass tube can greatly reduce harmful substance volatilization in automatic retraction plugging device again during liquid relief,
Improve safety guarantee.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the schematic diagram that liquid is taken using the utility model；
Fig. 3 is the schematic diagram using the utility model liquid relief；
Fig. 4 is the schematic diagram using the utility model liquid feeding.
Embodiment
The utility model provides a kind of rubber head dropper, can effectively prevent from taking harmful substance during liquid, liquid relief and liquid feeding
Volatilization.The utility model is described in detail with reference to specification drawings and specific embodiments.
As shown in figure 1, rubber head dropper provided by the utility model includes rubber head 10 and the glass tube 20 being connected with rubber head 10.
Slided on glass tube 20 and be provided with a plugging device 30.
Plugging device 30 is made up of soft rubber, has an axially extending bore, its lower end in cone-shaped, axially extending bore it is interior
Wall is provided with the upper limit ring 31 of annular, and the lower end of glass tube 20 is provided with lower limit projection 21, and upper limit ring 31 and lower limit are convex
Play 21 to coordinate, prevent plugging device 30 from being come off from glass tube 20.
Upper limit ring 31 in a ring, is made up of the rubber of antiacid alkali, and inwall has helicitic texture, can so prevent
Upper limit ring 31 arbitrarily moves, while when needing to move, can rotate upper limit ring 31 with hand again and move it to suitably
Position.
Lower limit projection 21 be and the integrally formed multiple outer salient points of glass tube 20.
In addition, being also arranged with a bowl-type gum cover on glass tube 20, Open Side Down for bowl-type gum cover, when rubber head dropper does not make
During with being temporarily placed on platform, or be inverted, tilt, the liquid adhered on the outer wall of glass tube 20 can be dammed by bowl-type gum cover,
Platform or on hand will not be flowed to, improves safety in utilization.
Application method of the present utility model is as follows：
(1) as shown in Fig. 2 when taking liquid, plugging device 30 has prevented because of the bottleneck of Action of Gravity Field automatic plugging reagent bottle 40
Evil volatile matter gets into the air.
(2) as shown in figure 3, during liquid relief, plugging device 30 is because gravity slides downwards, the retraction plugging device 30 of glass tube 20
In, reduce the volatilization of the harmful liquid of 20 sharp mouth of glass tube adhesion.
(3) as shown in figure 4, during liquid feeding, plugging device 30 prevents harmful volatilization because of the mouth of pipe of gravity automatic plugging test tube 50
Thing gets into the air.
The utility model is not limited to above-mentioned preferred forms, and anyone should learn that under enlightenment of the present utility model
The structure change made, it is every that there is same or like technical scheme with the utility model, each fall within guarantor of the present utility model
Within the scope of shield.
Claims (5)
1. a kind of rubber head dropper, including rubber head and the glass tube that is connected with the rubber head, it is characterised in that it is sliding on the glass tube
Dynamic to be provided with a plugging device, the plugging device has an axially extending bore, and lower end be in it is cone-shaped, the axially extending bore
Inwall is provided with the upper limit ring of annular, and the lower end of the glass tube is convex provided with the lower limit used is matched with the upper limit ring
Rise.
2. rubber head dropper as claimed in claim 1, it is characterised in that the upper limit ring in a ring, by the rubber of antiacid alkali
Material is made, and inwall has helicitic texture.
3. rubber head dropper as claimed in claim 1, it is characterised in that the plugging device is made up of soft rubber.
4. rubber head dropper as claimed in claim 1, it is characterised in that the lower limit is raised be with glass tube one into
Multiple outer salient points of type.
5. rubber head dropper as claimed in claim 1, it is characterised in that a bowl-type gum cover is also arranged with the glass tube,
Open Side Down for the bowl-type gum cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720598709.5U CN206793698U (en) | 2017-05-25 | 2017-05-25 | A kind of rubber head dropper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720598709.5U CN206793698U (en) | 2017-05-25 | 2017-05-25 | A kind of rubber head dropper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206793698U true CN206793698U (en) | 2017-12-26 |
Family
ID=60741956
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720598709.5U Expired - Fee Related CN206793698U (en) | 2017-05-25 | 2017-05-25 | A kind of rubber head dropper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206793698U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109520779A (en) * | 2018-10-31 | 2019-03-26 | 陈益禾 | A kind of chemical experiment sampler and the cuvette construction with the sampler |
-
2017
- 2017-05-25 CN CN201720598709.5U patent/CN206793698U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109520779A (en) * | 2018-10-31 | 2019-03-26 | 陈益禾 | A kind of chemical experiment sampler and the cuvette construction with the sampler |
| CN109520779B (en) * | 2018-10-31 | 2021-11-02 | 陈益禾 | Sampling device for chemistry experiments and have this sampling device's test tube structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171226 Termination date: 20180525 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |