CN202866855U - Air duct fast connection device - Google Patents
Air duct fast connection device Download PDFInfo
- Publication number
- CN202866855U CN202866855U CN 201220375388 CN201220375388U CN202866855U CN 202866855 U CN202866855 U CN 202866855U CN 201220375388 CN201220375388 CN 201220375388 CN 201220375388 U CN201220375388 U CN 201220375388U CN 202866855 U CN202866855 U CN 202866855U
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- CN
- China
- Prior art keywords
- air duct
- ratchet
- groove
- draw
- connection 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 discloses an air duct fast connection device, and relates to the technical field of air duct connection. The air duct fast connection device comprises an annular clamping groove which is formed by two butted semi-circular snap rings, and further comprises a hinge for connecting one ends of the two snap rings, and a ratchet clock which is mounted at the other ends of the two snap rings. The inner wall of the clamping groove is a smooth arc surface; the edge of the clamping groove is provided with a chamfer angle of 15 degrees; the ratchet clock mainly comprises three parts, namely a ratchet pin, a press handle and a ratchet groove; an upper ratchet is arranged on the ratchet pin; and a lower ratchet is arranged in the ratchet groove. The air duct fast connection device is simple in structure and convenient to use, and can implement the fast mounting and dismounting of an air duct and ensure that no air leaks at the joint of the air duct; and furthermore, the air duct fast connection device is light and firm, and convenient to carry, hang and reuse.
Description
Technical field:
The utility model relates to air duct link technique field, relates in particular to a kind of air duct quick access device.
Background technology:
At present, mine roadway draft type mainly adopts the booster forced ventilation, with the air feed path of air duct as fresh wind.Along with the development local ventilation acc power of science and technology is increasing, the air feed distance is more and more longer, and this has just increased the workload of air duct connection work.Tradition air duct connected mode adopts anti-limit link technique, and this technique connects complicated, takes time and effort, and is unfavorable for connecting fast air duct under the special environment, to reach the purpose of harmful gas concentration in the fast reducing tunnel.On the other hand, owing to use the iron wire colligation, when removing air duct, cause easily air duct damaged, increase the air leak rate of air curtain when multiplexing.
The utility model content:
Technical problem to be solved in the utility model is to overcome the defective of prior art, provides a kind of to duct-joint place good sealing effect, is easy to carry, hangs and multiplexing air duct quick access device.
Technical problem to be solved in the utility model realizes by the following technical solutions.
A kind of air duct quick access device is characterized in that: comprise the draw-in groove of annular, draw-in groove is made of involutory two halves round clasp; Also comprise the hinge that connects two snap rings, one end, and be installed in the ratchet lock of the two snap ring other ends.
Described draw-in groove inwall is level and smooth arc surface, and the trough rim of draw-in groove is provided with 15 ° chamfering, and the arc surface design can guarantee that the ring outer rim contact surface at draw-in groove inwall and duct-joint place is coupled good sealing effect fully; When local ventilation fan was opened, owing to be subjected to Action of Wind pressure, the ring of the two sections air ducts in joint produced reaction force mutually, to mobile, under the effect of reaction force, the ring of air duct and the inwall of draw-in groove tightly are coupled in the other direction separately, tight joint close does not leak out, and the larger effect of blast is better; The chamfering that the trough rim of draw-in groove arranges can prevent from blowing back and forth because of booster, and the ring that the causes air duct problem that causes air duct to disconnect that comes off in the draw-in groove occurs, and can also prevent that the trough rim of draw-in groove from stabbing out air duct fabric.
Described ratchet lock mainly is comprised of ratchet pin, pressure handle, ratchet slot three parts.
Be shaped with ratchet on the described ratchet pin.
Be shaped with lower ratchet in the described ratchet slot.
In the process of using, then exert oneself up and down with pressure handle the junction of at first ratchet pin being inserted ratchet slot, makes the upper ratchet of ratchet pin and the lower ratchet card in the ratchet slot real, guarantees that the ring of air duct can tightly be stuck in the draw-in groove.
The utility model is simple in structure, and is easy to use, can realize Fast Installation, dismounting air duct, can guarantee that again the duct-joint place do not leak out, and merrily and lightheartedly firm, is easy to carry, hangs and reuse.
Description of drawings:
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the schematic cross-section of the utility model chucking ring.
The specific embodiment:
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
As shown in Figure 1 and Figure 2, a kind of air duct quick access device comprises annular draw-in groove 2, and draw-in groove 2 is made of involutory two halves round clasp; Also comprise the hinge 1 that connects two snap rings, one end, and be installed in the ratchet lock 3 of the two snap ring other ends.
Draw-in groove 2 inwalls are level and smooth arc surface, and the trough rim 21 of draw-in groove 2 is provided with 15 ° chamfering, and the arc surface design of draw-in groove 2 inwalls can guarantee that the ring 4 outer rim contact surfaces at draw-in groove 2 inwalls and duct-joint place are coupled good sealing effect fully; When local ventilation fan is opened, owing to be subjected to Action of Wind pressure, the ring 4 of the two sections air ducts in joint produces reaction force mutually, separately to mobile in the other direction, under the effect of reaction force, the ring 4 of air duct and the inwall of draw-in groove 2 tightly are coupled, and tight joint close does not leak out, and the larger effect of blast is better; The chamfering that the trough rim 21 of draw-in groove 2 arranges can prevent from blowing back and forth because of booster, and the ring 4 that the causes air duct problem that causes air duct to disconnect that comes off in the draw-in groove 2 occurs, and can also prevent that the trough rim 21 of draw-in groove 2 from stabbing out air duct fabric.
During use, then exert oneself up and down with pressure handle 33 junction of at first ratchet pin 32 being inserted ratchet slot 34, makes the upper ratchet 31 of ratchet pin 32 real with lower ratchet 35 cards in the ratchet slot 34, guarantees that the ring 4 of air duct can tightly be stuck in the draw-in groove 2.
More than show and described basic principle of the present utility model, principal character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that describes in above-described embodiment and the manual just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (5)
1. air duct quick access device is characterized in that: comprise the draw-in groove of annular, draw-in groove is made of involutory two halves round clasp; Also comprise the hinge that connects two snap rings, one end, and be installed in the ratchet lock of the two snap ring other ends.
2. air duct quick access device according to claim 1, it is characterized in that: described draw-in groove inwall is level and smooth arc surface, and the trough rim of draw-in groove is provided with 15 ° chamfering.
3. air duct quick access device according to claim 1 is characterized in that: described ratchet lock mainly is comprised of ratchet pin, pressure handle, ratchet slot three parts.
4. air duct quick access device according to claim 3 is characterized in that: be shaped with ratchet on the described ratchet pin.
5. air duct quick access device according to claim 3 is characterized in that: be shaped with lower ratchet in the described ratchet slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220375388 CN202866855U (en) | 2012-07-31 | 2012-07-31 | Air duct fast connection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220375388 CN202866855U (en) | 2012-07-31 | 2012-07-31 | Air duct fast connection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202866855U true CN202866855U (en) | 2013-04-10 |
Family
ID=48033580
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220375388 Expired - Fee Related CN202866855U (en) | 2012-07-31 | 2012-07-31 | Air duct fast connection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202866855U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102900454A (en) * | 2012-10-31 | 2013-01-30 | 淮南矿业(集团)有限责任公司 | Air duct connecting device |
| CN110130971A (en) * | 2019-06-19 | 2019-08-16 | 湖南城市学院 | A kind of construction ventilation of tunnel device |
-
2012
- 2012-07-31 CN CN 201220375388 patent/CN202866855U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102900454A (en) * | 2012-10-31 | 2013-01-30 | 淮南矿业(集团)有限责任公司 | Air duct connecting device |
| CN110130971A (en) * | 2019-06-19 | 2019-08-16 | 湖南城市学院 | A kind of construction ventilation of tunnel 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: 20130410 Termination date: 20150731 |
|
| EXPY | Termination of patent right or utility model |