CN202441924U - Back suction-proofing rubber tube for chemical experiments - Google Patents
Back suction-proofing rubber tube for chemical experiments Download PDFInfo
- Publication number
- CN202441924U CN202441924U CN201220070040XU CN201220070040U CN202441924U CN 202441924 U CN202441924 U CN 202441924U CN 201220070040X U CN201220070040X U CN 201220070040XU CN 201220070040 U CN201220070040 U CN 201220070040U CN 202441924 U CN202441924 U CN 202441924U
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- CN
- China
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- section
- flow
- rubber tube
- back suction
- ball
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- 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 relates to a back suction-proofing rubber tube for chemical experiments. The back suction-proofing rubber tube is characterized in that: a circular bulge is formed on the inner wall of the tube to form a flow choking section; four point bulges at opposite positions are formed on the inner wall of the tube to form a flow through section; a roll ball is arranged between the flow choking section and the flow through section; the circular bulge and the point bulges can stop the roll ball from passing through the sections; and gas flows downstream along the rubber tube, and the roll ball is clamped on the flow through section due to the impact of the gas. The four point bulges at opposite positions are formed on the flow through section only, and gaps are formed between the roll ball and the tube wall, so that the gas is not influenced to pass. When the phenomenon of back suction exists, the roll ball is clamped on the flow choking section due to the impact of water flow, the circular bulge is formed on the flow choking section, and a gap is not formed between the roll ball and the circular bulge, so that the water flow is choked. The back suction-proofing rubber tube is ingenious in design, is easy to process and produce, is low in cost, can effectively prevent the phenomenon of back suction in the chemical experiments, is conveniently and fast used in the chemical experiments and facilitates students studying and operating.
Description
Technical field
The utility model relates to a kind of chemical experiment and uses the anti-suck rubber tube, belongs to the laboratory equipment technical field.
Background technique
When chemical laboratory is done the experiment of preparation gas; If collect gas with drainage; After teacher can tell that the student has collected gas, must from tank, take out conduit earlier, just can extinguish alcohol lamp then; Otherwise the water in the tank just blows back in the flask along conduit, and flask is broken because of cooling suddenly.If we design a kind of rubber tube that can prevent that liquid from flowing backwards and just can easily address this problem.
Summary of the invention
The purpose of the utility model provides a kind of chemical experiment and uses the anti-suck rubber tube, can effectively solve the problem that suck-back in the chemical experiment causes reactor break.
Technical solution: comprise ball, choked flow cross section and passage section in the utility model; The choked flow cross section is for being provided with the annulus convexity on inner tube wall; Passage section is placed ball for four some convexities that the position is relative are set between choked flow cross section and the passage section on inner tube wall.Annulus is protruding can to stop that with the some convexity ball passes through the cross section.Ball is made with light plastic, and its density is less than the density of water.
Use the utility model coupled reaction device and gas bottle during preparation gas; The gas that generates is along the rubber tube following current, and ball is stuck on the passage section by the impact of gas, owing to only be provided with four some convexities that the position is relative on the passage section; Leave the space between ball and tube wall, do not influence gas and pass through.And when taking place to flow backwards, ball receives water impact and is stuck on the choked flow cross section, owing to be provided with the annulus convexity on the choked flow cross section, voidlessness between ball and annulus convexity, current are just stopped.
The utility model design is ingenious, is easy to processing and cost is low, can effectively prevent the suck-back phenomenon in the chemical experiment, and is convenient to use in the chemical experiment, is convenient to student's study and operation.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Fig. 2 is the schematic representation in choked flow cross section in the utility model.
Fig. 3 is the schematic representation of passage section in the utility model.
Embodiment
Embodiment: as shown in fig. 1, between choked flow cross section 2 and passage section 3, place ball 1 in the utility model, ball 1 usefulness light plastic is made, and its density is less than the density of water.
As shown in Figure 2, choked flow cross section 2 is for being provided with annulus protruding 4 on inner tube wall.As shown in Figure 3, passage section 3 is for being provided with four points protruding 5 that the position is relative on inner tube wall.Annulus protruding 4 can stop that with point protruding 5 ball 1 passes through the cross section.
Use the utility model coupled reaction device and gas bottle during preparation gas; The gas that produces is along the rubber tube following current; Ball 1 is stuck on the passage section 3 by the impact of gas; Owing to only be provided with four some convexities 5 that the position is relative on the passage section 3, leave the space between ball and tube wall, do not influence gas and pass through.And when taking place to flow backwards, ball 1 receives water impact and is stuck on the choked flow cross section 2, because choked flow cross section 2 is provided with annulus convexity 4, and protruding 4 voidlessnesss of ball 1 and annulus, current are stopped.
Claims (3)
1. the anti-suck rubber tube is used in chemical experiment; Comprise ball (1), choked flow cross section (2) and passage section (3); It is characterized in that: choked flow cross section (2) are for being provided with annulus convexity (4) on inner tube wall; Passage section (3) is placed ball (1) for four points protruding (5) that the position is relative are set between choked flow cross section (2) and the passage section (3) on inner tube wall.
2. the anti-suck rubber tube is used in chemical experiment according to claim 1, it is characterized in that: annulus protruding (4) and point protruding (5) can stop that ball (1) passes through the cross section.
3. the anti-suck rubber tube is used in chemical experiment according to claim 1, it is characterized in that: ball (1) is made with light plastic, and its density is less than the density of water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220070040XU CN202441924U (en) | 2012-02-29 | 2012-02-29 | Back suction-proofing rubber tube for chemical experiments |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220070040XU CN202441924U (en) | 2012-02-29 | 2012-02-29 | Back suction-proofing rubber tube for chemical experiments |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202441924U true CN202441924U (en) | 2012-09-19 |
Family
ID=46823375
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220070040XU Expired - Fee Related CN202441924U (en) | 2012-02-29 | 2012-02-29 | Back suction-proofing rubber tube for chemical experiments |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202441924U (en) |
-
2012
- 2012-02-29 CN CN201220070040XU patent/CN202441924U/en not_active Expired - Fee Related
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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: 20120919 Termination date: 20130229 |