CN210889372U - Energy-saving fan in grain dryer - Google Patents
Energy-saving fan in grain dryer Download PDFInfo
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- CN210889372U CN210889372U CN201920936467.5U CN201920936467U CN210889372U CN 210889372 U CN210889372 U CN 210889372U CN 201920936467 U CN201920936467 U CN 201920936467U CN 210889372 U CN210889372 U CN 210889372U
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Abstract
The utility model belongs to the technical field of grain drying equipment, in particular to an energy-saving fan in a grain dryer, which uses a centrifugal fan to replace the existing air heater, air cooler and draught fan as air supply equipment; on the basis of utilizing the atmospheric pressure negative pressure air supply, a shaft with blades is arranged at a proper position of an air outlet of the centrifugal fan and is used for recycling the wind kinetic energy output by the centrifugal fan. One end of the mounting shaft is provided with a grooved wheel, and the grooved wheel is connected with the grooved wheel on the centrifugal fan shaft by a triangular belt and used for recovering and converting wind kinetic energy into kinetic energy and transmitting the kinetic energy to the centrifugal fan, so that the purposes of energy conservation and power conservation are achieved.
Description
Technical Field
The utility model belongs to the technical field of cereal drying equipment, concretely relates to centrifugal fan, in particular to energy-conserving fan among cereal drying-machine.
Background
The hot air blower in the existing grain drying machine feeds the flue gas heat generated by burning coal in a boiler into a drying tower by the hot air blower, and the grains are dried by air through each grain layer. The air cooler blows outdoor cold air into each grain layer of the cooling section of the drying tower to cool grains. The induced draft fan is used for conveying flue gas combusted by the boiler into the chimney through the heat exchanger. The three fans are large in power consumption when working.
Disclosure of Invention
The utility model discloses an it is not enough to above-mentioned prior art just to aim at, provides an energy-conserving fan in cereal drying-machine, can effectively replace air heater, air-cooler and draught fan to accomplish cereal stoving, and energy-conserving power saving.
The utility model aims at realizing through the following technical scheme:
an energy-conserving fan among grain drying-machine which characterized in that: the device comprises a centrifugal fan 4 which supplies air by means of atmospheric pressure and negative pressure, wherein a flue gas outlet at the tail end of a heat exchanger 2, a water vapor exhaust outlet of the dried grains in a drying tower 3 and an exhaust outlet of a cooling section of the drying tower 3 are respectively connected with an air inlet 10 of the centrifugal fan through a pipeline I7, a pipeline III 9 and a pipeline II 8;
an air outlet of the centrifugal fan 4 is connected with an air inlet of a chimney 5, and an air kinetic energy recovery device is arranged in the chimney 5;
the wind kinetic energy recovery device is a shaft 16 with blades 13, the shaft 16 is arranged on bearings 15, the bearings 15 are respectively arranged on two fixed supports, one end of the shaft 16 extends out of the wall of the chimney 5, one end of the shaft 16 extending out of the wall of the chimney 5 is provided with a grooved pulley 14, and the grooved pulley 14 is connected with a grooved pulley 11 on the shaft of the centrifugal fan through a triangular belt 12;
the wind blowing blade 13 sent into the chimney 5 from the air outlet of the centrifugal fan 4 drives the shaft 16 to rotate, the grooved wheel 11 and the grooved wheel 14 on the centrifugal fan shaft are connected through the triangular belt 12, and the recovered power is transmitted to the centrifugal fan 4.
Further, the shaft 16 is positioned at the lower bottom edge of the air inlet of the chimney 5 along the air flow direction of the air outlet of the centrifugal fan 4, and the distance from the shaft 16 to the lower bottom edge of the chimney 5 is 1/4-1/2 of the perimeter of the outlet of the centrifugal fan 4.
Compared with the prior art, the invention has the beneficial effects that: the utility model discloses energy-conserving fan among the grain drying machine simple structure conceives exquisitely, under centrifugal fan's operating condition, utilizes atmospheric pressure, to used wind equipment negative pressure air feed. The utility model discloses be fit for the position at centrifugal fan's air outlet, the wind kinetic energy of installation centrifugal fan output, recycle device. The shaft with the blades is arranged on the bearings of the two fixed supports and used for recovering wind kinetic energy output by the centrifugal fan and converting the wind kinetic energy into kinetic energy, and the booster motor drives the centrifugal fan to normally work so as to achieve the purposes of energy conservation and electricity saving.
Drawings
FIG. 1 is a schematic structural view of an energy-saving fan in the grain dryer of the present invention;
fig. 2 is an exploded view of the wind kinetic energy recovery device inside the chimney.
In the figure, 1, a boiler 2, a heat exchanger 3, a drying tower 4, a centrifugal fan 5, a chimney 6, a hot air pipeline 7 entering the tower, a pipeline I8, a pipeline II 9, a pipeline III 10, an air inlet 11 of the centrifugal fan, a grooved wheel 12 on a shaft of the centrifugal fan, a triangular belt 13, a blade 14, a grooved wheel 15, a bearing 16 and a shaft are arranged.
Detailed Description
The invention will be further described with reference to the following examples:
as shown in fig. 1 and fig. 2, the energy-saving fan of the grain dryer of the present invention includes a centrifugal fan 4, which supplies air by means of atmospheric pressure negative pressure, and the flue gas outlet at the end of the heat exchanger 2, the steam exhaust outlet after the grain drying in the drying tower 3 and the exhaust outlet of the cooling section of the drying tower 3 are respectively connected with the air inlet 10 of the centrifugal fan through a pipeline i 7, a pipeline iii 9 and a pipeline ii 8;
an air outlet of the centrifugal fan 4 is connected with an air inlet of a chimney 5, and an air kinetic energy recovery device is arranged in the chimney 5;
the wind kinetic energy recovery device is a shaft 16 with blades 13, the shaft 16 is arranged on bearings 15, the bearings 15 are respectively arranged on two fixed supports, one end of the shaft 16 extends out of the wall of the chimney 5, one end of the shaft 16 extending out of the wall of the chimney 5 is provided with a grooved pulley 14, and the grooved pulley 14 is connected with a grooved pulley 11 on the shaft of the centrifugal fan through a triangular belt 12;
the wind blowing blade 13 sent into the chimney 5 from the air outlet of the centrifugal fan 4 drives the shaft 16 to rotate, the grooved wheel 11 and the grooved wheel 14 on the centrifugal fan shaft are connected through the triangular belt 12, and the recovered power is transmitted to the centrifugal fan 4.
The drying section of the drying tower 3 is 5 layers, and the wind passing through the hot air pipeline 6 entering the tower is 100 ℃. The steam exhaust outlet for discharging the grains dried by the drying tower 3 into the air, the exhaust outlet of the cooling section of the drying tower 3 and the flue gas outlet at the tail end of the heat exchanger 2 originally entering the inlet of the induced draft fan are all led into the inlet of the centrifugal fan 4 by pipelines and are sent into a chimney 5 by the centrifugal fan 4. Therefore, the air supplied by the centrifugal fan to the air utilization equipment of the original hot air fan, the air cooler and the induced draft fan is all negative pressure air under the action of atmospheric pressure, the air supplied by the centrifugal fan 4 to all the air utilization equipment is the byproduct air under the working state of the centrifugal fan, and the work (wind kinetic energy) performed by the centrifugal fan 4 is fed into the chimney 5 and wasted. The utility model discloses energy-conserving fan, recycle send into the extravagant wind kinetic energy of chimney 5, reach the purpose of energy-conserving power saving.
Send into the income wind gap position of chimney 5 at 4 air outlets of centrifugal fan, increase the outer wall size of chimney 5 to can hold inside chimney 5 the utility model discloses a wind kinetic energy recovery unit. A shaft 16 with blades 13 is arranged at the position of an air inlet of a chimney 5 for blowing air by a centrifugal fan 4, and bearings 15 are arranged on two fixed brackets respectively on the bearings 15.
The shaft 16 is positioned at the lower bottom edge of the air inlet of the chimney 5 along the air flow direction of the air outlet of the centrifugal fan 4, and the distance from the shaft 16 to the lower bottom edge of the chimney 5 is 1/4-1/2 of the perimeter of the outlet of the centrifugal fan 4. The area of the blades 13 is not smaller than the fan outlet area. The principle is that the working efficiency of the centrifugal fan 4 is not affected when the centrifugal fan 4 works, and the wind kinetic energy recycling rate of the centrifugal fan 4 sent into the chimney 5 is maximized.
One end of the shaft 16 extends out of the wall of the chimney 5, a grooved wheel 14 is installed at one end of the shaft 16 extending out of the wall of the chimney 5, and the grooved wheel 14 is connected with a grooved wheel 11 on the centrifugal fan shaft through a triangle belt 12. The wind blowing blade 13 sent into the chimney 5 from the wind outlet of the centrifugal fan 4 drives the shaft 16 to rotate. The grooved pulley 11 and the grooved pulley 14 on the centrifugal fan shaft are connected through the triangular belt 12, the recovered power is transmitted to the centrifugal fan 4, and therefore the centrifugal fan 4 only needs to be provided with a minimum motor capable of enabling the centrifugal fan 4 to normally work while utilizing the recovered power, and the motor can offset heat loss, frictional resistance and other energy losses generated when the centrifugal fan 4 normally works, and the purposes of energy saving and power saving are achieved.
The centrifugal fan 4 and the wind kinetic energy recovery device thereof are combined to form the cost-saving fan.
The utility model discloses energy-conserving power saving has two aspects, on the one hand, is with the help of atmospheric pressure negative pressure air feed to all wind equipments by centrifugal fan 4, and the resistance that centrifugal fan 4 work receives will be little for the malleation air supply, so can save an electric energy. The second aspect is to recycle the wind energy blown into the chimney 5 from the outlet of the centrifugal fan 4.
The centrifugal fan 4 completes air supply work for the existing air utilization equipment of the air heater, the air cooler and the induced draft fan, and the atmospheric pressure principle is utilized.
The theoretical basis for recycling the wind kinetic energy wasted by the centrifugal fan 4 sent to the chimney 5 is the law of energy conservation.
Claims (2)
1. An energy-conserving fan among grain drying-machine which characterized in that: the device comprises a centrifugal fan (4) which supplies air by means of atmospheric pressure and negative pressure, wherein a flue gas outlet at the tail end of a heat exchanger (2), a water vapor exhaust outlet of the dried grains of a drying tower (3) and an exhaust outlet of a cooling section of the drying tower (3) are respectively connected with an air inlet (10) of the centrifugal fan through a pipeline I (7), a pipeline III (9) and a pipeline II (8);
an air outlet of the centrifugal fan (4) is connected with an air inlet of a chimney (5), and an air kinetic energy recovery device is arranged in the chimney (5);
the wind kinetic energy recovery device is a shaft (16) with blades (13), the shaft (16) is arranged on bearings (15), the bearings (15) are respectively arranged on two fixed supports, one end of the shaft (16) extends out of the wall of the chimney (5), one end of the shaft (16) extending out of the wall of the chimney (5) is provided with a grooved pulley (14), and the grooved pulley (14) is connected with a grooved pulley (11) on the shaft of the centrifugal fan through a triangular belt (12);
the wind blowing blade (13) sent into the chimney (5) from the air outlet of the centrifugal fan (4) drives the shaft (16) to rotate, the grooved wheel (11) and the grooved wheel (14) on the shaft of the centrifugal fan are connected through the triangular belt (12), and the recovered power is transmitted to the centrifugal fan (4).
2. The energy saving fan in a grain dryer according to claim 1, wherein: the shaft (16) is positioned in the air flow direction of the air outlet of the centrifugal fan (4) at the lower bottom edge of the air inlet of the chimney (5), and the distance from the shaft (16) to the lower bottom edge of the chimney (5) is 1/4-1/2 of the perimeter of the outlet of the centrifugal fan (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920936467.5U CN210889372U (en) | 2019-06-21 | 2019-06-21 | Energy-saving fan in grain dryer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920936467.5U CN210889372U (en) | 2019-06-21 | 2019-06-21 | Energy-saving fan in grain dryer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210889372U true CN210889372U (en) | 2020-06-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920936467.5U Active CN210889372U (en) | 2019-06-21 | 2019-06-21 | Energy-saving fan in grain dryer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210889372U (en) |
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2019
- 2019-06-21 CN CN201920936467.5U patent/CN210889372U/en active Active
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