CN203308493U - Anti-explosion door body of vertical air shaft - Google Patents
Anti-explosion door body of vertical air shaft Download PDFInfo
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- CN203308493U CN203308493U CN2013203365431U CN201320336543U CN203308493U CN 203308493 U CN203308493 U CN 203308493U CN 2013203365431 U CN2013203365431 U CN 2013203365431U CN 201320336543 U CN201320336543 U CN 201320336543U CN 203308493 U CN203308493 U CN 203308493U
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Abstract
The utility model discloses an anti-explosion door body of a vertical air shaft. An upper umbrella-shaped door body capable of freely rotating is overlapped on a lower umbrella-shaped door body of an existing anti-explosion door; rupture disks are arranged on an even number of fan frames on the umbrella surface of the upper umbrella-shaped door body; steel plates are uniformly arranged at intervals on a same even number of the fan frames on the umbrella surface of the lower umbrella-shaped door body; half number of the fan frames without the steel plates form holes. When an explosion occurs in the shaft, blast waves directly impact the rupture disks through the holes of the lower door body at first, and the rupture disks are quickly ruptured and directly communicated with the atmosphere for pressure relief, so that the deformation damage of the door body when the door body is severely impacted is avoided; a ventilation machine is protected from being impacted; the upper door body is quickly rotated after the explosion, the upper umbrella surface which is not impacted and ruptured is aligned to three holes of the lower anti-explosion door body for sealing the anti-explosion door, so that the mine ventilation is recovered as quickly as possible and the life safety of the underground trapped persons is guaranteed to the hilt.
Description
Technical field
The utility model relates to the ancillary facility of coal mine shaft lining ventilating shaft, relates in particular to the explosion proof door of vertical ventilating shaft.
Background technology
In coal mining, complete ventilation system is the prerequisite of safety of coal mines exploitation, the normal operational support of main ventilation fan the supply of down-hole fresh air.Explosion proof door is as one of main fixture of ventilation fan, and its Main Function has the following aspects: when (1) mine normally ventilated, explosion proof door can keep tightness, has avoided Air escape branch; (2) when in a single day gas or coal-dust explosion occur in down-hole, be subjected to the percussion of down-hole high pressure blast, explosion proof door can be opened pressure release moment to protect main ventilation fan to avoid destroying; (3) after mine generation gas or coal-dust explosion, explosion proof door can reset in time, recovers the ventilation system integrality; (4) at main ventilation fan during accidental power failure or there was a mechanical failure etc. when reason shuts down, explosion proof door can be opened automatically, utilizes natural ventilation pressure to keep the certain ventilation of mine; While (5) implementing back lass, explosion proof door can be held on the ventilating shaft collar set, avoids being caused Air escape branch by blast jack-up.
At present, the explosion proof door that the vertical ventilating shaft in colliery is used is the vertical ventilating shaft explosion-proof door of MFBL type, and its body is formed by Plate Welding, and its body is comprised of umbrella top cover and shirt rim; Sealed liquid cell is put in its shirt rim, then by pulley, slings and use the balance weight counterweight with 4 wire rope in door body surrounding; High-pressure gas wave during its body dependence self intensity opposing well shooting impacts.
By the investigation and analysis to many mine explosion accidents, mainly there are following two defects in the vertical ventilating shaft explosion-proof door body of MFBL at present:
(1) due to the uncertainty of well shooting accident intensity, the impact wave produced when blast is crossed when strong, and explosion-proof every body is easy to be subject to severe impact and is out of shape or destroys, even by the impact wave ventilating shaft well head that blows off.This has caused explosion proof door not reset in time, thereby can not recover in time to ventilate, and this is by the life security of serious threat down-hole trapped personnel.
(2) during back lass, because explosion-proof every body is fixed on the ventilating shaft collar set by presser feet, explosion proof door will lose the effect of decompression protection, if gas explosion now occurs, main fan in mine will be suffered considerable damage.
Above-mentioned two defects must be the great potential safety hazards of mine, therefore, improve the safety and reliability of vertical ventilating shaft explosion-proof door, significant to mine safety production.
The utility model content
In order to overcome the technological deficiency of existing explosion proof door poor safety performance, the utility model proposes a kind of vertical ventilating shaft explosion-proof door body.
The technical solution of the utility model is: a kind of vertical ventilating shaft explosion-proof door body, it comprises by umbrella top cover and lower floor's door body of forming of sealing shirt rim, it is characterized in that, above lower floor's door body more overlapping one can be around the upper strata Men Ti of umbrella top cover center rotating;
The umbrella top cover of described lower floor door body is comprised of umbrella shape framework and umbrella cover, and the umbrella shape framework is formed by connecting by center, six roots of sensation radial support and periphery circle frame; Radial support is divided into a circle even number fan frame by the umbrella shape framework, is interval with the umbrella cover that steel plate forms on the fan frame, and namely half fan frame is provided with steel plate, and half fan frame is not established steel plate and formed cavity;
Described upper strata Men Ti forms the umbrella top cover by umbrella shape framework and umbrella cover; Umbrella shape framework of door body is identical with the umbrella shape frame construction of lower floor door body at the middle and upper levels for it, that is: the umbrella shape framework of upper strata Men Ti also is formed by connecting by center, six roots of sensation radial support and periphery circle frame, and six roots of sensation radial support is divided into a circle even number fan frame by the umbrella shape framework; On all fan frames, all be provided with the umbrella cover that rupture disk forms, rupture disk is by easily by the sheet material of blast impulse fragmentation, being processed.
In order to prevent leaking out of the mutual changing of the relative positions of levels door body and contact surface, both peripheries circle frame contact surface is designed to cambered surface each other, and is provided with encapsulant.
In order to be easy to upper strata door body, rotate, the contact surface of levels door body center is made as sliding-contact.
Utilize the method for the vertical ventilating shaft explosion-proof door body safety relief of the utility model and ventilation fast to be, it is characterized in that,
The first step: while blasting in down-hole, at first blast directly impacts rupture disk corresponding to upper strata door body by the cavity of lower floor's door body, and rupture disk is hit and breaks fast, directly with atmosphere, communicates, thereby release a part of pressure, avoided the deformation failure of door body when being subject to intense impact; Explosion proof door whole pressure releases after opening under the effect of weight and impact wave simultaneously, the protection ventilation fan is not hit;
Second step: after treating explosion accident, operating personnel rotate rapidly upper strata Men Ti, make the upper strata be not broken by the impact umbrella cover aim at three cavities of lower floor's explosion proof door body, in time to explosion vents seal, thereby recover as soon as possible mine ventilation, ensure to greatest extent the life security of down-hole trapped personnel; In normal the ventilation, again the rupture disk broken is changed afterwards, recovered original serviceable condition.
The utility model beneficial effect is; the impact wave produced when blast is crossed when strong; even if being subject to severe impact, can not be out of shape or destroy explosion-proof every body yet; more can be by the impact wave ventilating shaft well head that blows off; explosion proof door can be resetted in time; reach the purpose that fast quick-recovery ventilates, protected the life security of down-hole trapped personnel.When blasting, the rupture disk of upper strata Men Ti is hit and breaks fast, directly with atmosphere, communicates, and has realized safe pressure release purpose.
The accompanying drawing explanation
Fig. 1 is the schematic diagram of the utility model embodiment;
Fig. 2 is upper strata explosion proof door body top view;
Fig. 3 is lower floor's explosion proof door body top view.
In figure, 1-upper periphery circle frame, 2-is upper support radially, the upper center of 3-, the 4-rupture disk, the 5-sliding bearing, the 6-encapsulant, the 7-steel plate, center under 8-, 9-is lower support radially, 10-following peripheral circle frame, 11-seals shirt rim, 12-cavity.
The specific embodiment
Below in conjunction with accompanying drawing, be described in further detail of the present utility model, embodiment take the umbrella shape frameworks that six fan frames form to be example.
Vertical ventilating shaft explosion-proof door body as shown in Figure 1, it comprises by umbrella top cover and lower floor's door body of forming of sealing shirt rim 11, above lower floor's door body more overlapping one can be around the upper strata Men Ti of umbrella top cover center rotating; Wherein:
The umbrella top cover of described lower floor door body is comprised of umbrella shape framework and umbrella cover, the umbrella shape framework by lower center 8, the six roots of sensation radially lower support 9 and following peripheral circle frame 10 be formed by connecting; The six roots of sensation radially lower support 9 is divided into six fan frames by the umbrella shape framework, and six fans are interval with the umbrella cover that steel plate forms on frames, and namely three fan frames are provided with 7, three fan frames of steel plate and do not establish steel plate and form empty 12(as shown in Figure 3);
The umbrella top cover that described upper strata Men Ti is comprised of umbrella shape framework and umbrella cover; The umbrella shape framework of upper strata Men Ti is identical with the umbrella shape frame construction of lower floor's door body, be upper strata Men Ti the umbrella shape framework also by upper center 3, the six roots of sensation radially upper support 2 and upper periphery circle frame 1 be formed by connecting, the six roots of sensation radially upper support 2 is divided into a circle even number fan frame by the umbrella shape framework of upper strata Men Ti; At six fan frames, all be provided with the umbrella cover that rupture disk 4 forms, rupture disk 4 is by easily by the sheet material of blast impulse fragmentation, being processed (as shown in Figure 2).
In order to prevent leaking out of the upper and lower layer door mutual changing of the relative positions of body and contact surface, the periphery circle frame contact surface of upper and lower layer door body is designed to cambered surface each other, and is provided with encapsulant 6.
In order to be easy to upper strata door body, rotate, on their center contact surface, be provided with sliding bearing and realize sliding-contact.
Above embodiment only take the umbrella shape frameworks that preferred six fan frames form and be example.During enforcement, the umbrella shape framework is minimum can establish two fan frames, and namely demifacet is provided with the umbrella cover that steel plate 7 forms, and another demifacet is not established steel plate and formed cavity 12; Also can establish four, eight or 12 fan frames.
Utilize the method that the vertical ventilating shaft explosion-proof door body of the utility model ventilates fast to be: while in down-hole, blasting, at first blast impacts rupture disk 4 corresponding to upper strata door body by the cavity 12 of lower floor's door body, rupture disk 4 is hit and breaks fast, directly with atmosphere, communicate, thereby release a part of pressure, avoided the deformation failure of door body when being subject to intense impact; Explosion proof door whole pressure releases after opening under the effect of weight and impact wave simultaneously, the protection ventilation fan is not hit; After explosion accident, rotation upper strata door body is 60 ° rapidly, makes the umbrella cover be not broken by the impact aim at three cavities 12 of lower floor's explosion proof door body, in time to explosion vents seal, thereby recover as soon as possible mine ventilation, ensure to greatest extent the life security of down-hole trapped personnel; In normal the ventilation, again the rupture disk broken is changed afterwards, recovered original serviceable condition.
Claims (3)
1. vertical ventilating shaft explosion-proof door body, it comprises the lower floor's door body be comprised of umbrella top cover and sealing shirt rim, it is characterized in that, above lower floor's door body a more overlapping energy around the upper strata Men Ti of umbrella top cover center rotating;
The umbrella top cover of described lower floor door body is comprised of umbrella shape framework and umbrella cover, and the umbrella shape framework is formed by connecting by center, six roots of sensation radial support and periphery circle frame; Radial support is divided into a circle even number fan frame by the umbrella shape framework, is interval with the umbrella cover that steel plate forms on the fan frame, and namely half fan frame is provided with steel plate, and half fan frame is not established steel plate and formed cavity;
Described upper strata Men Ti forms the umbrella top cover by umbrella shape framework and umbrella cover; Umbrella shape framework of door body is identical with the umbrella shape frame construction of lower floor door body at the middle and upper levels for it, that is: the umbrella shape framework of upper strata Men Ti is also justified frame by center, six roots of sensation radial support and periphery and is formed by connecting; Six roots of sensation radial support is divided into a circle even number fan frame by the umbrella shape framework; On all fan frames, all be provided with the umbrella cover that rupture disk forms.
2. vertical ventilating shaft explosion-proof door body as claimed in claim 1, is characterized in that, the round frame contact surface of upper and lower layer door body periphery is designed to cambered surface each other, and is provided with encapsulant.
3. vertical ventilating shaft explosion-proof door body as claimed in claim 1, is characterized in that, the contact surface of upper and lower layer door body center is set as sliding-contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203365431U CN203308493U (en) | 2013-06-09 | 2013-06-09 | Anti-explosion door body of vertical air shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203365431U CN203308493U (en) | 2013-06-09 | 2013-06-09 | Anti-explosion door body of vertical air shaft |
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| Publication Number | Publication Date |
|---|---|
| CN203308493U true CN203308493U (en) | 2013-11-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203365431U Withdrawn - After Issue CN203308493U (en) | 2013-06-09 | 2013-06-09 | Anti-explosion door body of vertical air shaft |
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| Country | Link |
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| CN (1) | CN203308493U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103306704A (en) * | 2013-06-09 | 2013-09-18 | 山东科技大学 | Vertical ventilating shaft anti-explosion door and method for relieving pressure safely and performing ventilation quickly by using door |
-
2013
- 2013-06-09 CN CN2013203365431U patent/CN203308493U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103306704A (en) * | 2013-06-09 | 2013-09-18 | 山东科技大学 | Vertical ventilating shaft anti-explosion door and method for relieving pressure safely and performing ventilation quickly by using door |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20131127 Effective date of abandoning: 20150311 |
|
| RGAV | Abandon patent right to avoid regrant |