CN202731967U - Wind tube protective screening - Google Patents
Wind tube protective screening Download PDFInfo
- Publication number
- CN202731967U CN202731967U CN201220371102.0U CN201220371102U CN202731967U CN 202731967 U CN202731967 U CN 202731967U CN 201220371102 U CN201220371102 U CN 201220371102U CN 202731967 U CN202731967 U CN 202731967U
- Authority
- CN
- China
- Prior art keywords
- protective screening
- wind tube
- air duct
- slungshot
- screening
- 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
- 230000001681 protective effect Effects 0.000 title claims abstract description 60
- 238000012216 screening Methods 0.000 title claims abstract description 59
- 238000004880 explosion Methods 0.000 claims abstract description 11
- 238000005422 blasting Methods 0.000 abstract description 6
- 238000009423 ventilation Methods 0.000 abstract description 6
- 238000010276 construction Methods 0.000 abstract description 3
- 239000003517 fume Substances 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 206010003497 Asphyxia Diseases 0.000 abstract 1
- 230000036228 toxication Effects 0.000 abstract 1
- 230000003116 impacting effect Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 230000009172 bursting Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
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- Ventilation (AREA)
Abstract
The utility model provides a wind tube protective screening, and belongs to the field of a ventilation of an underground construction and security. A protective screening (1) is arranged between the front of a wind tube exhaust inlet (8) and a roadway working face (5). A maximum diagonal line of a single grid of the protective screening (1) is less than the minimum diameter of a blasting slungshot. The edge of the protective screening (1) is fixed on a roadway wall (3) and a roadway top plate (4) by adopting a pothook (2). On one hand, the protective screening can prevent the slungshot from smashing the wind tube in the process of carrying out explosion of the working face. On the other hand, due to the existence of mesh holes, an aircurrent can be enabled to be passed through freely to reach the working face. The normal operatin of a ventilating system can be guaranteed. Blasting fume produced by a blasting operation can be excluded effectively and timely. The occurrence of toxication and suffocation accidents is prevented, the safety production is guaranteed, and the labor productivity is improved. When the wind tube protective screening is not needed to be used, the wind tube protective screening can be taken down timely, and therefore other works of wording procedures are not impeded. The wind tube protective screening is simple in structure and convenient to use and maintain.
Description
Technical field
The utility model relates to a kind of air duct protective screening, especially cuts the air duct protective screening of gear blasting flyrock, belongs to underground construction and ventilates and security fields.
Background technology
The dead face driving of underground construction often will adopt booster to ventilate, and booster ventilates and usually is comprised of ventilation fan and air duct.That its draft type has usually is forced, pull-out type and hybrid etc.For the ventilation effect that obtains, air duct air outlet (forced) or intake (pull-out type) must be not more than effective range (forced) or the effective absorption distance (pull-out type) of air duct to the distance of work plane.But the distance of effective range (forced) or effective absorption distance (pull-out type) is all shorter, especially the distance of effective absorption distance (pull-out type) is shorter, the casting distance of some slungshots is short during usually all than explosion, and this just means that air duct unavoidably can be subject to the attack of slungshot.In order to make air duct avoid the infringement of slungshot, people often are installed in air duct the place away from work plane, have reduced widely ventilation effect, can't dilute quickly and effectively blasting fume, the dust of getting rid of work plane, have serious accident potential.Therefore, must take effective air duct safeguard procedures, improve the reliability that booster ventilates.The air duct protective screening that the utility model provides, the air duct that booster is ventilated exempts from the infringement of slungshot, does not hinder distinguished and admirable unimpeded simultaneously.Ventilation effect is good, guarantees safe production.
Summary of the invention
The utility model provides a kind of air duct protective screening, at one of air duct air outlet (forced) or inlet scoop (pull-out type) forward mounting protective screening firmly, can cut the gear slungshot during explosion, make air duct exempt from damage, can by distinguished and admirable, ensure booster ventilation normal operation again.
The structure of the utility model air duct protective screening is: as shown in Figure 2, before air duct inlet scoop 8 and between the tunnel work plane 5, a protective screening 1 is set, the diagonal of the single grid maximum of protective screening 1 is less than the minimum diameter of the slungshot of explosion, and the minimum diameter of the slungshot of explosion should be determined according to field experiment.
The edge of described protective screening 1 adopts hook 2 to be fixed on wall 3 and back 4.Hook as much as possible can make edge better fit wall 3, back 4 and ground, tunnel.As shown in Figure 1.
Described protective screening 1 reserves suitable distance with air duct inlet scoop 8, does not touch air duct inlet scoop 8 when being subject to impacting with protective screening and is advisable.
Described protective screening 1 protective screening 1 mounting points is as far as possible away from tunnel work plane 5, is not advisable but do not touch air duct inlet scoop 8 when making again protective screening be subject to impacting.
Before work plane 5 explodes, protective screening 1 is hung over securely on the hook 2 of wall 3 and back 4.During explosion, throwing stone is out stopped by protective screening 1, makes rigidity air duct 7 avoid damaging.Simultaneously, the mesh that protective screening 1 is crossed in wind circulation arrives work plane, rapidly with blasting fume dilution, eliminating.
After a period of time of ventilating, when the concentration of the toxic and harmful of work plane reaches allowable concentration, protective screening 1 is taken off from linking up with 2, be placed on suitable place, the current equipment that reaches of not obstruction personnel passes through.At this moment, just can carry out the work of next operation.
Along with constantly pushing ahead of work plane 5, air duct 7 also constantly prolongs forward.Correspondingly, the position of the hook 2 of wall 3 and back 4 also will arrange forward, so that protective screening 1 is in suitable position, air duct 7 is played effective protective action.
Having a few and good effect of air duct protective screening described in the utility model: the one, it plays protective action to air duct, namely stops the slungshot of bursting work, makes air duct avoid infringement, and the 2nd, it ensures that booster ventilates smooth and easy effective to the distinguished and admirable inhibition that do not rise.The 3rd, it can be taken off when not needing protective screening, do not hinder other work.
Description of drawings
Fig. 1 is the structural representation of the utility model air duct protective screening;
Fig. 2 is the schematic diagram that the utility model air duct protective screening is distributed in the tunnel.
Each label is among the figure: 1-protective screening, 2-hook, 3-wall, 4-back, 5-work plane, 6-hanging stick, 7-air duct, 8-air duct inlet scoop.
The specific embodiment
Below in conjunction with embodiment and accompanying drawing the utility model is further described, but the utility model is not limited to the following stated scope.
Embodiment 1: the structure of the air duct protective screening of the present embodiment is: before air duct inlet scoop 8 and between the tunnel work plane 5, a protective screening 1 is set, the diagonal of the single grid maximum of protective screening 1 is less than the minimum diameter of the slungshot of explosion, and the minimum diameter of the slungshot of explosion should be determined according to field experiment.The edge of protective screening 1 adopts hook 2 to be fixed on wall 3 and back 4, adopts 8 hooks on the wall 3, adopts 5 hooks on the back, makes protective screening well be fitted in wall 3, back 4 and ground, tunnel.Protective screening 1 reserves suitable distance with air duct inlet scoop 8, does not touch air duct inlet scoop 8 when being subject to impacting with protective screening and is advisable.Protective screening 1 protective screening 1 mounting points is as far as possible away from tunnel work plane 5, is not advisable but do not touch air duct inlet scoop 8 when making again protective screening be subject to impacting.
Embodiment 2: the structure of the air duct protective screening of the present embodiment is: before air duct inlet scoop 8 and between the tunnel work plane 5, a protective screening 1 is set, the diagonal of the single grid maximum of protective screening 1 is less than the minimum diameter of the slungshot of explosion, and the minimum diameter of the slungshot of explosion should be determined according to field experiment.The edge of protective screening 1 adopts hook 2 to be fixed on wall 3 and back 4, adopt 6 hooks on the wall 3, adopt 3 hooks on the back 4, adopt 2 hooks on the ground, tunnel, adopt 5 hooks on the back, make protective screening well be fitted in wall 3, back 4 and ground, tunnel.Protective screening 1 reserves suitable distance with air duct inlet scoop 8, does not touch air duct inlet scoop 8 when being subject to impacting with protective screening and is advisable.Protective screening 1 protective screening 1 mounting points is as far as possible away from tunnel work plane 5, is not advisable but do not touch air duct inlet scoop 8 when making again protective screening be subject to impacting.
Claims (2)
1. air duct protective screening is characterized in that: between the front and tunnel work plane (5), protective screening (1) is set in air duct inlet scoop (8), the diagonal of the single grid maximum of protective screening (1) is less than the minimum diameter of the slungshot of explosion.
2. air duct protective screening according to claim 1 is characterized in that: the edge of described protective screening (1) adopts hook (2) to be fixed on wall (3) and back (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220371102.0U CN202731967U (en) | 2012-07-30 | 2012-07-30 | Wind tube protective screening |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220371102.0U CN202731967U (en) | 2012-07-30 | 2012-07-30 | Wind tube protective screening |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202731967U true CN202731967U (en) | 2013-02-13 |
Family
ID=47657679
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220371102.0U Expired - Fee Related CN202731967U (en) | 2012-07-30 | 2012-07-30 | Wind tube protective screening |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202731967U (en) |
-
2012
- 2012-07-30 CN CN201220371102.0U patent/CN202731967U/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130213 Termination date: 20150730 |
|
| EXPY | Termination of patent right or utility model |