CN201071733Y - Bidirectional opening wind pressure balance rotating air gate - Google Patents
Bidirectional opening wind pressure balance rotating air gate Download PDFInfo
- Publication number
- CN201071733Y CN201071733Y CNU2007200257035U CN200720025703U CN201071733Y CN 201071733 Y CN201071733 Y CN 201071733Y CN U2007200257035 U CNU2007200257035 U CN U2007200257035U CN 200720025703 U CN200720025703 U CN 200720025703U CN 201071733 Y CN201071733 Y CN 201071733Y
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- door
- ventilation
- door frame
- air door
- door leaf
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Abstract
The utility model provides a rotary ventilation door for wind pressure balance with two-way opening, which belongs to the ventilation door manufacturing technique field used for underground coal mines. The utility model is characterized in that the ventilation door comprises an outer door frame, an inner door frame, a door leaf, a medial shaft, a return spring and a limit baffle plate, etc, wherein, the outer door frame is fixed on the wall body, the left side or the right side of the inner door frame is arranged with the outer door frame through the inner door frame shaft, the inner door frame is arranged therein with the door leaf which is matched therewith; the medial shaft is arranged on vertical center line of the door leaf, upper and lower ends of the medial shaft are embedded in the inner door frame, the return spring is arranged between the medial shaft and the door leaf, and the limit baffle plate for limiting the door leaf from rotating randomly is arranged on the inner side of the inner door frame at the pushing side of the ventilation door. Compared with the prior art, the rotary ventilation door effectively reduces the opening resistance of the ventilation door, and cancels of the reversal ventilation door, bringing more convenience for pedestrians and prolonging the service life of the ventilation door. The utility model is widely applied in air intake and return crossheading of underground ventilation systems in coal mines, and has the functions of cutting off the air current and pedestrians and traffic, so as to be important component in the mine ventilation system.
Description
(1) technical field
The utility model relates to a kind of underground mine use air door, and specifically a kind of bidirectional opening pressure balance rotates air door.
(2) background technology
In mine ventilation system, air door is one of important ventilation equipment, and its effect is can block distinguished and admirable again by pedestrian's (vehicle).Traditional air door that use the China's coal-mine down-hole is the wooden air door of manually single fan normally.The design feature of tradition air door makes it have many shortcomings that is difficult to overcome: in the air entering and returning connection roadway, unidirectional unlatching, the resistance brachium, because distinguished and admirable suction function makes that traditional door opening resistance is very big, not only make pedestrian's inconvenience more because the inverted ventilation door must be installed again, and increased the air door input and cause mine ventilation cost increase according to " safety regulations in coal mine " regulation; The impact force of closing the door is big, has both damaged door leaf easily, squeezes easily again and hinders the pedestrian; The underground air humidity, air door rots or the like easily.Above-mentioned shortcoming is not only made troubles to the pedestrian, and often causes the air door difficult management even cause seriously leaking out and influencing the stability of ventilation system and then influence mine safety production.Therefore, the air door of development advanced technology is an important topic of coalmine ventilation safety management work.
(3) summary of the invention
Technical assignment of the present utility model is at the deficiencies in the prior art, a kind of ventilation system that is used under coal mine is provided, reduce the opening resistance of air door in the air entering and returning connection roadway, make the pedestrian more convenient and safe, and the application life of prolongation air door, guarantee that ventilation system is stable, the bidirectional opening pressure balance rotates air door reliably.
The technical scheme that its technical problem that solves the utility model adopts is:
This bidirectional opening pressure balance rotates air door, comprise exterior door frame and interior doorframe, the left side of interior doorframe or right side are set together by interior doorframe axle and exterior door frame, exterior door frame is fixed on the body of wall, be provided with the door leaf that matches with it in the interior doorframe, the longitudinal centre line of door leaf is provided with axis, the two ends up and down of axis are embedded in the interior doorframe, the weight of door leaf all is placed on the axis, be provided with return spring between axis and the door leaf, the interior doorframe inboard of pushing side at air door open is provided with the arbitrarily postive stop baffle of rotation of restriction door leaf.
Above-mentioned bidirectional opening pressure balance rotates air door, and the two ends up and down of its axis are connected with the upper and lower frames of interior doorframe by bearing.
Above-mentioned bidirectional opening pressure balance rotates air door, and a side relative with interior doorframe axle between its exterior door frame and the interior doorframe is provided with the screw latch.
Above-mentioned bidirectional opening pressure balance rotates air door, and former and later two covering of the fans of its door leaf are provided with push and pull bar.
The doorframe design: exterior door frame is fixed on the body of wall, in order to support interior doorframe, door leaf and axis etc.; Interior doorframe is in order to support axis, and door leaf and axis are one, rotates the interior doorframe (together with door leaf) of unlatching and can pass through mine car.
Axis design: axis design on the door leaf median line, and axis both sides door leaf becomes axial symmetry, structure and more reasonable stress, thereby realized bidirectional opening and pressure balance, make air door when opening and blast have nothing to do.During door opening, it is zero that leeway Δ P acts on the door leaf of axis both sides resultant moment, thereby opening resistance (the return spring opplied moment is only arranged) is very little, and the pedestrian is very convenient.
Postive stop baffle design: on air door is pushed the side door frame open, design postive stop baffle, the both sides postive stop baffle becomes the axle center symmetry, not only when air door is closed, play position-limiting action, and realized that an air door has the dual-use function of positive and negative air door, when making air door in off position and blast irrelevant.Its action principle is:
(1) dual-use function of the positive and negative air door of realization.Under the air door closed condition, because the effect of postive stop baffle, make axis both sides door leaf have blast acting surface product moment Δ S (equaling the area of a lateral confinement position air door that baffle plate is covered), and air door draws back the area of a side always than the big Δ S of the area of pushing a side open, there is pressure differential Δ F=Δ P * Δ S in axis both sides door leaf under leeway Δ P effect thereby cause, be exactly that the resultant moment of this Δ F and return spring active force acts on the air door pressure surface all the time and draws back on the door leaf of a side, thereby can make air door always be in normally off, and with the blast orientation independent, thereby realized that an air door has the dual-use function of positive and negative air door.
(2) make air door when closing, play position-limiting action.
(3) sealing is installed on postive stop baffle, air door is not leaked out when closing.
Return spring design: at the axis junction installation return spring of two ends and doorframe up and down, to the air door moment that rotates all the time, and rotating torque is opposite with the direction of the moment of opening the door, thereby makes air door can close automatically after unlatching.
Bidirectional opening pressure balance of the present utility model rotates air door compared with prior art, and the beneficial effect that is produced is:
1) axis design has formed the both sides door leaf and has become axial symmetry on the center line of air door integral body, has realized the bidirectional opening process pressure balance that opens the door well, and the air door force structure is reasonable, and the laborsaving pedestrian that opens the door is convenient.
2) not only play position-limiting action in the air door closed condition, and the more important thing is solved " positive and negative air door unites two into one " effectively thus realized a dual-use function with positive and negative air door, make the convenient safety of pedestrian; Seal is installed on postive stop baffle, and it is respond well to prevent leaking out, and makes ventilation system more safe and reliable.
3) at the axis junction installation return spring of two ends and doorframe up and down, to the air door moment that rotates all the time, and rotating torque is opposite with the direction of the moment of opening the door, thereby makes air door can close automatically after unlatching.
4) design of inside and outside doorframe has solved the problem of mine car by air door.Exterior door frame is fixed on the body of wall, in order to support interior doorframe, door leaf and axis etc.; Interior doorframe is in order to support axis, and door leaf and axis are one, rotates the interior doorframe (together with door leaf) of unlatching and can pass through mine car.
5) air door is made (except the seal) with steel, and is sturdy and durable, long service life.
(4) description of drawings
Accompanying drawing 1 is a structural representation of the present utility model.
Among the figure, 1, exterior door frame, 2, the inside casing door-hinge, 3, interior doorframe, 4, axis, 5, handle, 6, postive stop baffle, 7, bearing, 8, the screw latch, 9, return spring, 10, door leaf.
Accompanying drawing 2 is the force analysis figure of the utility model when opening original state.
Among the figure, F---open the door pulling force or thrust, Δ P---leeway,
S1---left-hand door pectinid is pressed active area, S2---right door leaf blast active area,
A---door leaf integral width, a1---left-hand door fan width deducts the left limit barrier width,
A2---right door leaf width deducts the right limit barrier width, a2=a1,
A3---left limit barrier width, a4---right limit barrier width, a4=a3,
M1---return spring power is to the opplied moment of door leaf,
F---door-hinge is subjected to the reaction force of doorframe under the leeway effect,
F1---the left limit baffle plate is fanned elastic force to left-hand door,
F2---right limit baffle plate is to right door leaf elastic force, f1=f2.
(5) specific embodiment
Below in conjunction with explaining below 1,2 pairs of bidirectional opening pressure balances rotation air doors works of the present utility model of accompanying drawing.
As shown in Figure 1, bidirectional opening pressure balance of the present utility model rotates air door, its structure is by exterior door frame 1, interior doorframe axle 2, interior doorframe 3, axis 4, push and pull bar 5, postive stop baffle 6, bearing 7, screw latch 8, formations such as return spring 9 and door leaf 10, exterior door frame 1 is fixed on the body of wall, the interior doorframe axle 2 that passes on left of interior doorframe 3 is set together with exterior door frame 1, be provided with the door leaf 10 that matches with it in the interior doorframe 3, the longitudinal centre line of door leaf 10 is provided with axis 4, the two ends up and down of axis 4 join by the upper and lower frames of bearing 7 with interior doorframe 3, be provided with return spring 9 between axis 4 and the door leaf 10, interior doorframe 3 inboards of pushing side at air door open are provided with the arbitrarily postive stop baffle 6 of rotation of restriction door leaf 10,6 one-tenth axle center symmetries of both sides postive stop baffle.
Its right positions is provided with screw latch 8 between above-mentioned exterior door frame 1 and the interior doorframe 3.
Former and later two covering of the fans of above-mentioned door leaf 10 are provided with push and pull bar 5.
As shown in Figure 2, f1, f2, f3, f4 only exist when air door closed condition door leaf contacts with postive stop baffle, and the resultant moment that its size and Δ PS1, Δ PS2, M1 and F act on the door leaf and produced is directly proportional.Door leaf and postive stop baffle moment disengage immediately when in a single day air door enters opening, and f1, f2, f3, f4 are zero at once.
The rotation friction of air door axis and interior doorframe is very little, ignores.
If the positive direction of rotating torque is a counter-clockwise direction, can draws door opening original state resultant moment by figure two and be:
∑ M=Δ PS1sin α (a1+a3)/2+M1-F (a1+a3) sin β-Δ PS2sin α a2/2-f1 (a3/2+a1)-f2 (a4/2+a2)-(f3+f4) a/4 (formula 1)
Door opening state resultant moment is:
∑ M=Δ PS1sin α (a1+a3)/2+M1-F (a1+a3) sin β-S2sin α (a2+a4)/2 (formula 2)
In the above-mentioned formula, α is the force direction of leeway Δ P and the angle of door leaf; β is the angle of air door tensile force f and door leaf.
(2) the door opening original state pulling force that opens the door
At this moment, do not begin clockwise direction as yet at F effect lower wind door and rotate, ∑ M=0 is got by formula 1:
f1(a3/2+a1)+f2(a4/2+a2)+(f3+f4)a/4＝ΔPS1sinα(a1+a3)/2+M1-F(a1+a3)sinβ-ΔPS2sinαa2/2
Along with F increases gradually, f1, f2, f3, f4 correspondingly reduce gradually; When F=Δ PS1sin α (a1+a3)/2+M1-Δ PS2sin α a2/2, f1, f2, f3, f4 disappear immediately and equal zero.
When being about to begin clockwise direction, door rotates, when door leaf and postive stop baffle begin to disengage fully, and f1=f2=0, f3=f4=0, ∑ M＜0, bring (formula 1) into and get:
ΔPS1sinα(a1+a3)/2+M1-F(a1+a3)sinβ-ΔPS2sinαa2/2＜0F＞[ΔPS1sinα(a1+a3)/2+M1-ΔPS2sinαa2/2]/(a1+a3)sinβ
This shows that F is very little, be easy to so open the door.
(3) the door opening state pulling force that opens the door
At this moment, rotate at F effect lower wind door clockwise direction, door leaf and postive stop baffle disengage fully, f1=f2=0, and f3=f4=0 gets ∑ M＜0 generation people (formula 2):
∑M＝ΔPS1sinα(a1+a3)/2+M1-F(a1+a3)sinβ-ΔPS2sinα(a2+a4)/2＜0
Since S1=S2, a1+a3=a2+a4
So, F＞M1/ (a1+a3) sin β
This shows that blast is to air door opplied moment balance, opening the door only need overcome the return spring opplied moment and get final product, and irrelevant with blast.Because F is very little, so it is very easy to open the door.
(4) air door is closed process status
At this moment, rotate in return spring effect lower wind door inhour, F=0, f1=f2=0, f3=f4=0 gets for people's formula 2:
∑M＝ΔPS1sinα(a1+a3)/2+M1-ΔPS2sinα(a2+a4)/2
Since S1=S2, a1+a3=a2+a4,
So, ∑ M=M1＞0
This shows that blast is to air door opplied moment balance, rotate and close automatically and irrelevant with blast in return spring effect lower wind door counter-clockwise direction.
(5) air door closed condition
At this moment, after closing, air door remains static, F=0, and ∑ M=0, sin α=sin900=1 gets for people's formula 1:
∑M＝ΔPS1(a1+a3)/2+M1-ΔPS2a2/2-f1(a3/2+a1)-f2(a4/2+a2)-(f3+f4)a/4＝0
Or f1 (a3/2+a1)+f2 (a4/2+a2)+(f3+f4) a/4=M1+ Δ PS1 (a1+a3)/2-Δ PS2a2/2
Because of Δ PS1 (a1+a3)/2-Δ PS2a2/2＞0, so right formula＞0, promptly postive stop baffle is in closed condition to elastic force f1, f2, f3, f4 existence, the event air door of door leaf.
This shows that in the air door closed condition, the moment of closing the door is pressed increase with the wind and increased, so be in closed condition all the time at return spring, leeway and postive stop baffle acting in conjunction lower wind door.
(6) air door inverted ventilation state
Because the door leaf structure is an axial symmetry, postive stop baffle is the axle center symmetry, as long as F=0, air door always is in closed condition and irrelevant with blast direction and size.So air door has been realized the dual-use function of positive and negative air door.The mechanical analysis proof is as follows:
1. when air door was in closed condition, F=0, ∑ M=0, Δ P were bear (inverted ventilation state), sin α=sin900=1, and Δ PS1 and Δ PS2 acting force arm numerical values recited are respectively a1/2 and a2+a4, get resultant moment by formula 1 to be:
∑M＝-ΔPS1a1/2+M1+ΔPS2(a2+a4)/2-f1(a3/2+a1)-f2(a4/2+a2)-(f3+f4)a/4＝0
Or f1 (a3/2+a1)+f2 (a4/2+a2)+(f3+f4) a/4=M1+ Δ PS2 (a2+a4)/2-Δ PS1a1/2
Because of Δ PS2 (a2+a4)/2-Δ PS1a1/2＞0, so right formula＞0, promptly postive stop baffle exists elastic force f1, f2, f3, the f4 of door leaf, so air door is in closed condition.
2. be in when closing process status when air door, F=0, Δ P be for negative (inverted ventilation state), for people's formula 2:
∑M＝-ΔPS1sinα(a1+a3)/2+M1+ΔPS2sinα(a2+a4)/2
Since S1=S2, a1+a3=a2+a4,
So, ∑ M=M1＞0
This shows that blast is to air door opplied moment balance, rotate and close automatically and irrelevant with blast in return spring effect lower wind door counter-clockwise direction.
Air door during the inverted ventilation state open the door pulling force during with normal ventilation state mechanics principle identical.
(7) pedestrian passes through method
Under the normal ventilation situation, when the pedestrian enters return side by the inlet side, can draw the S1 door leaf or push away the S2 door leaf and pass through air door; When the pedestrian entered the inlet side by return side, the push-and-pull door leaf was opposite with the former.Under the inverted ventilation situation, the pedestrian is opposite under push-and-pull door leaf method and the normal ventilation situation when the air door.
(8) mine car passes through method
Mine car must be dismantled the screw latch when the air door, then with interior doorframe together with the door leaf turn-off, mine car can pass through.When not being open to traffic, with interior doorframe and exterior door frame screw latch fixation.
It is simple and convenient that bidirectional opening pressure balance of the present utility model rotates its processing and fabricating of air door, and processing and fabricating gets final product shown in the by specification accompanying drawing.
Except that the described technical characterictic of manual, be the known technology of those skilled in the art.
Claims (5)
1. the bidirectional opening pressure balance rotates air door, comprise exterior door frame (1) and interior doorframe (3), the left side of interior doorframe (3) or right side are set together by interior doorframe axle (2) and exterior door frame (1), it is characterized in that, be provided with the door leaf (10) that matches with it in the interior doorframe (3), the longitudinal centre line of door leaf (10) is provided with axis (4), the two ends up and down of axis (4) are embedded in the interior doorframe (3), be provided with return spring (9) between axis (4) and the door leaf (10), interior doorframe (3) inboard of pushing side at air door open is provided with the arbitrarily postive stop baffle (6) of rotation of restriction door leaf (10).
2. bidirectional opening pressure balance according to claim 1 rotates air door, it is characterized in that the two ends up and down of axis (4) are connected by the upper and lower frames of bearing (7) with interior doorframe (3).
3. bidirectional opening pressure balance according to claim 1 rotates air door, it is characterized in that, both sides postive stop baffle (6) becomes the axle center symmetry.
4. bidirectional opening pressure balance according to claim 1 rotates air door, it is characterized in that, a side relative with interior doorframe axle (2) between exterior door frame (1) and the interior doorframe (3) is provided with screw latch (8).
5. bidirectional opening pressure balance according to claim 1 rotates air door, it is characterized in that former and later two covering of the fans of door leaf (10) are provided with push and pull bar (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200257035U CN201071733Y (en) | 2007-07-27 | 2007-07-27 | Bidirectional opening wind pressure balance rotating air gate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200257035U CN201071733Y (en) | 2007-07-27 | 2007-07-27 | Bidirectional opening wind pressure balance rotating air gate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201071733Y true CN201071733Y (en) | 2008-06-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200257035U Expired - Fee Related CN201071733Y (en) | 2007-07-27 | 2007-07-27 | Bidirectional opening wind pressure balance rotating air gate |
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| CN (1) | CN201071733Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101871357A (en) * | 2010-06-07 | 2010-10-27 | 沙同庆 | Automatic wind door for positive wind and opposite wind of mine |
| CN101824998B (en) * | 2009-12-06 | 2011-12-07 | 杜志刚 | Double-direction relief damper |
| CN102900453A (en) * | 2012-10-18 | 2013-01-30 | 山西潞安华信科技发展有限公司 | Mining gas backflow-preventing wind cone device |
| CN104421217A (en) * | 2013-08-28 | 2015-03-18 | 百事德机械（江苏）有限公司 | Acoustic shield capable of quickly lowering internal pressure |
| CN104828407A (en) * | 2015-05-13 | 2015-08-12 | 天津振兴水泥有限公司 | Bidirectional feeding type material hopper and switching method thereof |
| CN107201712A (en) * | 2016-03-17 | 2017-09-26 | 俞祁浩 | A kind of method of spring balancing regulation subgrade heat convection |
| CN108286453A (en) * | 2018-01-05 | 2018-07-17 | 中国神华能源股份有限公司 | Alley way air door |
| CN110329430A (en) * | 2019-07-01 | 2019-10-15 | 上海外高桥造船有限公司 | Cabin for boat door for high wind pressure room |
-
2007
- 2007-07-27 CN CNU2007200257035U patent/CN201071733Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101824998B (en) * | 2009-12-06 | 2011-12-07 | 杜志刚 | Double-direction relief damper |
| CN101871357A (en) * | 2010-06-07 | 2010-10-27 | 沙同庆 | Automatic wind door for positive wind and opposite wind of mine |
| CN102900453A (en) * | 2012-10-18 | 2013-01-30 | 山西潞安华信科技发展有限公司 | Mining gas backflow-preventing wind cone device |
| CN104421217A (en) * | 2013-08-28 | 2015-03-18 | 百事德机械（江苏）有限公司 | Acoustic shield capable of quickly lowering internal pressure |
| CN104828407A (en) * | 2015-05-13 | 2015-08-12 | 天津振兴水泥有限公司 | Bidirectional feeding type material hopper and switching method thereof |
| CN107201712A (en) * | 2016-03-17 | 2017-09-26 | 俞祁浩 | A kind of method of spring balancing regulation subgrade heat convection |
| CN108286453A (en) * | 2018-01-05 | 2018-07-17 | 中国神华能源股份有限公司 | Alley way air door |
| CN108286453B (en) * | 2018-01-05 | 2020-06-02 | 中国神华能源股份有限公司 | Tunnel air door |
| CN110329430A (en) * | 2019-07-01 | 2019-10-15 | 上海外高桥造船有限公司 | Cabin for boat door for high wind pressure room |
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Legal Events
| Date | Code | Title | Description |
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| 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: 20080611 |