CN206360910U - Draft fan - Google Patents
Draft fan Download PDFInfo
- Publication number
- CN206360910U CN206360910U CN201720003298.0U CN201720003298U CN206360910U CN 206360910 U CN206360910 U CN 206360910U CN 201720003298 U CN201720003298 U CN 201720003298U CN 206360910 U CN206360910 U CN 206360910U
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- CN
- China
- Prior art keywords
- air channel
- straight tube
- motor
- blower fan
- rotating shaft
- 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 is related to a kind of draft fan, belongs to industrial equipment.The technical solution adopted in the utility model is：Draft fan, including blower fan and air channel, air channel includes one section of arc air channel, the front end in arc air channel is straight tube air channel, blower fan is set at the straight tube air channel of the arc air channel front end, the blower fan includes the first wind wheel and the second wind wheel, first wind wheel and the second wind wheel are to be arranged in the rotating shaft of fusiformis, rotating shaft is to extension at arc air channel and stretches out arc air channel, rotating shaft connects the output shaft of motor outside arc air channel, the output shaft of motor is stretched out in rear side, and the rear end of output shaft is connected by freewheel clutch with diesel engine.
Description
Technical field
The utility model is related to a kind of draft fan, belongs to industrial equipment.
Background technology
Draft fan is used for ventilation, such as in driving face, and it is used as coal mine down-hole personnel and equipment phase
To the region of concentration, while being also that the poisonous and harmful substances such as underground mine dust, blasting fume produce more position, it is therefore desirable to be responsible for
To the conveying fresh air of underground driving face, and the local ventilation system of the toxic and harmful gas in discharge tunnel whereby.
The continuous and steady operation in working face tunneling process must be ensured simultaneously, this safe and orderly production to underground coal mine and work people
The life security of member is extremely important.
Nowadays, domestic main big-and-middle-sized colliery is during downhole production, to ensure that dead face driving face is local
The safe and stable operation of ventilating system, the two fans used mostly, dual power supply, the measure of dual-control loop.Two same models
Booster in a normal work, another as standby, first, such configuration causes the wasting of resources, standby
With blower fan often in stopped status, just opened only when working fan breaks down；Secondly, although this method can be one
Local ventilation system work caused by determining to take precautions against wherein one ventilation blower or the failure of its supply line in degree is lost
Effect, but can not still avoid the severe safety accident caused by the gas exceeding limit or pernicious gas caused by power failure are exceeded.
The content of the invention
The present invention provides a kind of draft fan, solves the operation problem of the backup blower fan under power down mode.
To achieve the above object, the technical solution adopted by the present invention is：
Draft fan, including blower fan and air channel, air channel include one section of arc air channel, and the front end in arc air channel is straight tube wind
Blower fan is set at road, the straight tube air channel of the arc air channel front end, the blower fan includes the first wind wheel and the second wind wheel, first wind
Wheel and the second wind wheel are to be arranged in the rotating shaft of fusiformis, and rotating shaft is to extension at arc air channel and stretches out arc air channel, and rotating shaft is in arc
The output shaft of motor is connected outside shape air channel, the output shaft of motor stretches out in rear side, and the rear end of output shaft passes through overdrive clutch
Device is connected with diesel engine.
Preferably, being provided with horizontally disposed shaft hole on the arc air channel, rotating shaft runs through arc wind at shaft hole
The side wall in road, the first wind wheel and the second wind wheel are disposed side by side on rotating shaft at the position of straight tube air channel.
Further that uni-drive gear box is preferably provided between the rotating shaft and the output shaft of motor, uni-drive gear box will
The velocity of rotation lifting of motor output..
Preferably, being provided with noise-reducing structure at the straight tube air channel rear portion for setting blower fan, the noise-reducing structure is straight to be laid in
Ventilating duct surface.
Preferably, the noise-reducing structure is sponge.
Further preferably straight tube air channel front end is the environment for needing to divulge information, and blower fan is opened in the front portion in straight tube air channel
Protection network is provided with mouthful, straight tube air channel is shunk in blower fan position diameter, the front end airflow mouthful in straight tube air channel is bell mouth shape.
Alternatively, the diesel engine is arranged on same base with motor, and rotating speed is provided with the output shaft of motor
Sensor, speed probe is connected on the start-up circuit of diesel engine, and start-up circuit is used as power supply, revolution speed sensing provided with battery
Device monitors that the output shaft of motor is less than after the rotating speed of blower fan requirement, and the startup motor of start-up circuit joint diesel engine realizes bavin
The startup of oil machine.
The utility model has the advantage of：Anti-explosion diesel power plants are added at the rear of motor, normal
Between damage, by the working order of Sensor monitoring motor, progress switches to diesel in real time, realizes
" motor diesel engine " double dynamical in good time switching, improves the coefficient of stability of operation；
Motor is external outside airduct, it is easy to the maintenance of motor；Diesel engine and electricity are carried out using freewheel clutch
The power conversion of machine, improves operating automation；
It can accomplish to start ventilation in time in the power-off state, it is to avoid have a power failure the potential safety hazard brought, even if not having a power failure
State, in the case where the motor of blower fan breaks down, can also accomplish that clean boot is divulged information, greatly solve existing
The problem of draft fan that the power failure of equipment and Breakdown Maintenance are caused stops.A set of motor device has been saved in the operation of the present apparatus,
Increase diesel machine equipment, cost keeps balance, and safety coefficient improves several times.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model,
Fig. 2 is wind wheel structure schematic diagram of the present utility model.
Reference：
1st, base, 2, diesel engine, 3, freewheel clutch, 4, motor, 5, shaft coupling, 6, uni-drive gear box, 7, arc wind
Road, 8, drive shaft, 9, blower fan, 10, straight tube air channel, 11, noise-reducing structure, 12, straight tube air channel contraction section, the 101, first wind wheel,
102nd, the second wind wheel, 103, the protection network of air inlet 104.
Embodiment
Structure of the present utility model is as shown in figure 1, draft fan, including blower fan and air channel, and air channel includes one section of arc wind
Road, the front end in arc air channel is to set blower fan at straight tube air channel, the straight tube air channel of the arc air channel front end, and the blower fan includes the
One wind wheel and the second wind wheel, first wind wheel and the second wind wheel are to be arranged in the rotating shaft of fusiformis, and rotating shaft is prolonged at arc air channel
Stretch and stretch out arc air channel, rotating shaft connects the output shaft of motor outside arc air channel, the output shaft of motor stretches out in rear side,
The rear end of output shaft is connected by freewheel clutch with diesel engine.Double wheel blower fan realizes quick ventilation, increases blast, improves air
Flow efficiency.
In actual use, for prevent because shut off power in emergency or trouble hunting and caused by traditional " two fans " can not
The critical condition normally run, anti-explosion diesel power plants are added at the rear of motor, in normal and improper work
Between condition, by the running status of speed probe monitoring driving motor, " Chai Yi electricity " double dynamical in good time switching is realized；Utilize
Freewheel clutch, realizes the connection of diesel engine and motor.Its motor taken out of from air duct it is external, beneficial to radiating and it is daily
Safeguard, can effectively protect the operation steady in a long-term of driving mine ventilator.
The program considers that the resource space that " dual air blowers and dual power " that underground is generally configured is caused is wasted and power failure is caused
Two fans motor stop transport simultaneously, based on safely and reliably sensor device, it is ensured that the emergency ventilation of driving face, dimension
Hold the operation steady in a long-term of underground coal mine local ventilation system.
Horizontally disposed shaft hole is provided with the arc air channel, rotating shaft runs through the side wall in arc air channel at shaft hole,
Air channel side-walls perforate and sealed bearings are installed, it is to avoid this is in the Air Leakage under high pressure wind speed.First wind wheel and
Two wind wheels are disposed side by side on rotating shaft at the position of straight tube air channel.Travelling gear is provided between the rotating shaft and the output shaft of motor
Case, the velocity of rotation that uni-drive gear box exports motor is lifted.
Noise-reducing structure is provided with the straight tube air channel rear portion for setting blower fan, the noise-reducing structure is the straight-through air channel table that is laid in
Face.The noise-reducing structure can for sponge or other there is silencing function lay material.Muffling device eliminates blower fan rotation at this
The friction sound in turning between impeller and air, lowers operation noise, is conducive to the healthy of field worker.Straight tube air channel front end
To need the environment divulged information, blower fan is provided with protection network at the front opening in straight tube air channel, and straight tube air channel is in blower fan position diameter
Shrink, the front end airflow mouthful in straight tube air channel is bell mouth shape.
The diesel engine is arranged on same base with motor, and speed probe is provided with the output shaft of motor, is turned
Fast sensor is connected on the start-up circuit of diesel engine, and start-up circuit is provided with battery as power supply, and speed probe is monitored
After rotating speed of the output shaft of motor less than blower fan requirement, the startup motor of start-up circuit joint diesel engine realizes opening for diesel engine
It is dynamic.
When motor is due to emergency situations power down, sensor detects electric motor circuit breaking signal, freewheel clutch knot
Close, diesel engine is lighted a fire startups immediately, power source offer power is used as by diesel engine；During electric motor normal working, diesel engine is in
Stopped status, freewheel clutch departs from, to prevent motor run diesel engine.
Claims (7)
1. a kind of draft fan, including blower fan and air channel, it is characterized in that, air channel is included before one section of arc air channel, arc air channel
Hold as straight tube air channel, blower fan is set at the straight tube air channel of the arc air channel front end, the blower fan includes the first wind wheel and the second wind
Wheel, first wind wheel and the second wind wheel are to be arranged in the rotating shaft of fusiformis, and rotating shaft is to extension at arc air channel and stretches out arc wind
Road, rotating shaft connects the output shaft of motor outside arc air channel, and the output shaft of motor stretches out in rear side, and the rear end of output shaft leads to
Freewheel clutch is crossed with diesel engine to be connected.
2. draft fan according to claim 1, it is characterized in that, it is provided with horizontally disposed rotating shaft on the arc air channel
Hole, rotating shaft runs through the side wall in arc air channel at shaft hole, and the first wind wheel and the second wind wheel are disposed side by side on rotating shaft in straight tube wind
At road position.
3. draft fan according to claim 2, it is characterized in that, provided with biography between the rotating shaft and the output shaft of motor
Moving gear case, the velocity of rotation that uni-drive gear box exports motor is lifted.
4. draft fan according to claim 1, it is characterized in that, noise reduction is provided with the straight tube air channel rear portion for setting blower fan
Structure, the noise-reducing structure is the straight-through air duct surfaces that are laid in.
5. draft fan according to claim 4, it is characterized in that, the noise-reducing structure is sponge.
6. draft fan according to claim 1, it is characterized in that, the environment that straight tube air channel front end is divulged information for needs,
Blower fan is provided with protection network at the front opening in straight tube air channel, and straight tube air channel is shunk in blower fan position diameter, before straight tube air channel
End air inlet is bell mouth shape, and the middle part front and back position of blower fan is fusiformis diffuser.
7. draft fan according to claim 1, it is characterized in that, the diesel engine is arranged on same base with motor
On, speed probe is provided with the output shaft of motor, speed probe is connected on the start-up circuit of diesel engine, start-up circuit
Power supply is used as provided with battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720003298.0U CN206360910U (en) | 2017-01-04 | 2017-01-04 | Draft fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720003298.0U CN206360910U (en) | 2017-01-04 | 2017-01-04 | Draft fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206360910U true CN206360910U (en) | 2017-07-28 |
Family
ID=59379452
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720003298.0U Expired - Fee Related CN206360910U (en) | 2017-01-04 | 2017-01-04 | Draft fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206360910U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111927520A (en) * | 2020-08-17 | 2020-11-13 | 淮阴师范学院 | Low-power-consumption ventilation system for coal mine ventilation and use method thereof |
-
2017
- 2017-01-04 CN CN201720003298.0U patent/CN206360910U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111927520A (en) * | 2020-08-17 | 2020-11-13 | 淮阴师范学院 | Low-power-consumption ventilation system for coal mine ventilation and use method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170728 Termination date: 20180104 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |