CN201779383U - Backfire-preventive hose joint - Google Patents
Backfire-preventive hose joint Download PDFInfo
- Publication number
- CN201779383U CN201779383U CN2010202461438U CN201020246143U CN201779383U CN 201779383 U CN201779383 U CN 201779383U CN 2010202461438 U CN2010202461438 U CN 2010202461438U CN 201020246143 U CN201020246143 U CN 201020246143U CN 201779383 U CN201779383 U CN 201779383U
- Authority
- CN
- China
- Prior art keywords
- hose coupling
- hose joint
- mobile core
- backfireproof
- backfire
- 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 backfire-preventive hose joint, which comprises a hose joint, a fastening ring, a moving chip and a rubber sealing ring. The hose joint is provided with a moving channel and a fastening groove, the fastening ring is mounted in the fastening groove, the moving chip is mounted inside the moving channel of the hose joint, and the rubber sealing ring is sleeved on the moving chip. The backfire-preventive hose joint can effectively prevent air flow from entering an oxyacetylene gas cylinder, prevents explosion, improves safety of a welding and cutting torch, and simultaneously has the advantages of fine air tightness, simple structure and convenience for operation.
Description
Technical field
The utility model belongs to cutting, welding field, is specifically related to a kind of backfireproof hose coupling.
Background technique
Welding torch afterbody all is equipped with the hose coupling that is used for connecting inflammable gas and oxygen.Present hose coupling can only be carried out the folding of air-flow by air flow switch, and it is bad to lack air-flow check device or air-flow non-return effect, therefore tempering takes place easily in use, causes airflow reflux to arrive in the oxyacetylene gas cylinder, thereby set off an explosion, cause security incident.
Summary of the invention
The purpose of this utility model provides a kind of backfireproof hose coupling, and it can prevent airflow reflux effectively, avoids airflow reflux to arrive in the oxyacetylene gas cylinder, stops the blast of oxyacetylene gas cylinder, improves safety reliability.
In order to realize above-mentioned model utility purpose, the utility model is by the following technical solutions: a kind of backfireproof hose coupling, it comprises hose coupling, snap ring, mobile core and rubber seal, and wherein hose coupling is provided with moving walkway, draw-in groove, is provided with mobile core and snap ring in the hose coupling; Snap ring is installed on the draw-in groove; Mobile core is installed in the moving walkway of hose coupling; Rubber seal is enclosed within on the mobile core.
Above-mentioned a kind of backfireproof hose coupling, described hose coupling is provided with moving walkway, draw-in groove.
Above-mentioned a kind of backfireproof hose coupling is drilled with the hole of 4 diameter 2.5mm on the described mobile core.
A kind of backfireproof hose coupling of the utility model, when air-flow when acetylene cylinder flows to welding torch inner chamber by sebific duct, hose coupling, because air-flow has certain pressure, mobile core is pushed into snap ring place, moving walkway left side, the orifice flow that air-flow is 2.5mm from four diameters of mobile core goes out, enter welding torch inner chamber, guaranteed the throughput of acetylene, oxygen in the passage, welding pharos flame performance is up to state standards; When tempering took place, air-flow and flame reverse flow may enter hose coupling inside, because air-flow is aggressive, mobile core is slided to the moving walkway right side, and rubber seal withstands on the conical surface, forms linear sealing, thereby stop airflow reflux in the oxyacetylene gas cylinder, prevent tempering, stop blast.
The utlity model has following advantage: can effectively stop air-flow to enter in the oxyacetylene gas cylinder, prevent blast, the Security that has improved the welding torch; Also has good, simple in structure, the easy to operate advantage of tightness simultaneously.
Description of drawings
Fig. 1 is the utility model backfireproof hose coupling plan view;
Fig. 2 is the utility model backfireproof hose coupling hose coupling plan view;
Fig. 3 is that the utility model backfireproof hose coupling moves core A-A sectional drawing.
Embodiment
Below in conjunction with embodiment the utility model is further elaborated.
As shown in the figure, a kind of backfireproof hose coupling, it comprises hose coupling 1, snap ring 2, mobile core 3 and rubber seal 4, wherein hose coupling 1 is provided with moving walkway 5 and draw-in groove 6, is provided with mobile core 3 and snap ring 2 in the hose coupling 1; Snap ring 2 is installed on the draw-in groove 6, and mobile core 3 is installed in the moving walkway 5 of hose coupling 1, and rubber seal 4 is enclosed within on the mobile core 3; Be drilled with the hole 7 of 4 2.5mm on the mobile core 3.
As shown in the figure, a kind of backfireproof hose coupling is inserted in rubber seal 4 on the mobile core 3 during installation, and put into hose coupling 1 moving walkway 5, and stuck in moving walkway 5 with snap ring 2 mobile core 3, make it be not easy to drop, can move flexibly during use, improve the Security of welding torch.When air-flow when acetylene cylinder flows to welding torch inner chamber by sebific duct, hose coupling, because air-flow has certain pressure, and mobile core 3 is pushed into moving walkway 5 left side snap rings 2 places, air-flow flows out from four holes 7 of mobile core 3, enter welding torch inner chamber, guaranteed the throughput of acetylene, oxygen in the passage; When tempering takes place when, air-flow and flame reverse flow, may enter hose coupling inside, because air-flow is aggressive to slide to moving walkway 5 right sides with mobile core 3, rubber seal 4 withstands on moving walkway 5 conical surfaces, forms linear sealing, thereby stops airflow reflux in the oxyacetylene gas cylinder, prevent tempering, stop blast.
The utility model can effectively stop air-flow to enter in the oxyacetylene gas cylinder, prevent exploding, the security that has improved the welding torch; Also has simultaneously good, simple in structure, the easy to operate advantage of air-tightness.
Claims (4)
1. backfireproof hose coupling, it comprises hose coupling, snap ring, mobile core and rubber seal, it is characterized in that: be provided with mobile core and snap ring in the hose coupling, rubber seal is enclosed within on the mobile core.
2. backfireproof hose coupling according to claim 1 is characterized in that: described hose coupling is provided with moving walkway, draw-in groove.
3. backfireproof hose coupling according to claim 1 and 2 is characterized in that: mobile core is installed in the moving walkway, and snap ring is installed on the draw-in groove.
4. backfireproof hose coupling according to claim 1 is characterized in that, is drilled with the hole of 4 diameter 2.5mm on the described mobile core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202461438U CN201779383U (en) | 2010-07-05 | 2010-07-05 | Backfire-preventive hose joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202461438U CN201779383U (en) | 2010-07-05 | 2010-07-05 | Backfire-preventive hose joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201779383U true CN201779383U (en) | 2011-03-30 |
Family
ID=43792594
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202461438U Expired - Fee Related CN201779383U (en) | 2010-07-05 | 2010-07-05 | Backfire-preventive hose joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201779383U (en) |
-
2010
- 2010-07-05 CN CN2010202461438U patent/CN201779383U/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: 20110330 Termination date: 20110705 |