CN215465273U - Rice hull bin dust collector and rice hull bin - Google Patents
Rice hull bin dust collector and rice hull bin Download PDFInfo
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- CN215465273U CN215465273U CN202121567191.1U CN202121567191U CN215465273U CN 215465273 U CN215465273 U CN 215465273U CN 202121567191 U CN202121567191 U CN 202121567191U CN 215465273 U CN215465273 U CN 215465273U
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Abstract
The utility model relates to a rice hull bin dust removing device which comprises a dust removing fan and a cyclone separator, wherein an air suction port of the dust removing fan is communicated with a rice hull bin through an air discharging pipe, an air exhaust port of the dust removing fan is connected with an inlet of the cyclone separator, a dust exhaust port of the cyclone separator is communicated with the rice hull bin through a dust return pipe, air with dust removed is discharged into the atmosphere through the air exhaust port of the cyclone separator, and the bottom end of the dust return pipe is lower than the bottom end of the air discharging pipe. The utility model also relates to a rice hull bin. The rice hull bin dust removing device and the rice hull bin have the advantages of low cost, long service life of equipment, better dust separation effect and low modification cost.
Description
Technical Field
The utility model relates to the technical field of environmental protection, and particularly provides a rice hull bin dust removal device and a rice hull bin.
Background
Present rice processing factory, the rice husk that separates from the rice huller plant all blow it by air conveying system to the silo in and keep in basically, as the container of temporary storage usefulness. Most rice hull bins are of assembled steel plate bin structures with good economy, low manufacturing cost and poor air tightness. The air volume of the fan of the rice husk conveying system is generally 5000m3About/h, and the wind pressure is about 12500 Pa. The general design of the air quantity and the air pressure is that an air leakage pipe with the diameter of about 300mm is connected with a cyclone separator (a cyclone separator). The wind release is achieved by positive pressure in the bin.
However, when the air from the conveying pipeline enters the rice hull bin, the volume is suddenly enlarged, the pressure is uniformly reduced, and when positive pressure exists in the bin, the pressure of each wall surface in the bin is the same according to the Boyle's law. Therefore, under the tiny average pressure, the air quantity passing through the air leakage pipe is only a very small part of the delivered air quantity, and under the air pressure, the air speed of the dust-containing air entering the cyclone separator is very low, so that the centrifugal effect of centrifugally separating dust is far not achieved. At present, dust leaks out around most rice husk bins.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a rice hull bin dust removing device and a rice hull bin aiming at the problems in the prior art.
In order to achieve the purpose, the technical scheme of the rice hull bin dust removing device is as follows:
including dust exhausting fan and cyclone, dust exhausting fan's inlet scoop communicates with the rice husk storehouse through letting out the tuber pipe, dust exhausting fan's air exit with cyclone's entry is connected, cyclone's air exit will get rid of the air discharge after the dust in the atmosphere, cyclone's dust exhaust mouth passes through dust back flow and rice husk storehouse intercommunication, the bottom of dust back flow is less than let out the bottom of tuber pipe.
Preferably, the air volume of the dust removal fan is 15% -25% larger than that of the rice husk conveying fan.
Preferably, the bottom end of the dust return pipe is 1000-1500mm lower than the bottom end of the air discharge pipe.
Preferably, the cross-sectional area of the nozzle of the dust return pipe is 1/15-1/25 of the cross-sectional area of the nozzle of the air discharge pipe.
Preferably, the dust removal fan and the cyclone separator are both positioned at the top of the rice hull bin.
The utility model also provides a rice hull bin which comprises the conveying fan and the dust removal device.
The rice hull bin dust removing device and the rice hull bin have the advantages of low cost, long service life of equipment, better dust separation effect and low modification cost.
Drawings
FIG. 1 is a schematic structural view of the rice hull bin of the present invention.
Detailed Description
In order to more clearly describe the technical contents of the present invention, the following further description is given in conjunction with specific embodiments.
Fig. 1 shows an embodiment of the rice hull bin provided by the utility model. The rice hull bin is provided with an assembled cylindrical bin 11, a conveying pipeline 12 connected with a conveying fan and a dust removal device.
The dust removing device comprises a dust removing fan 14 and a cyclone separator 16, wherein the dust removing fan 14 and the cyclone separator 16 are both positioned at the top of the rice hull bin. The inlet scoop of dust exhausting fan 14 is through the 11 intercommunications in assembled silo of air leakage pipe 13 with the rice husk, dust exhausting fan 14's air exit with cyclone 16's entry is connected, cyclone 16's air exit will get rid of the air discharge after the dust in the atmosphere, cyclone 16's dust exhaust mouth passes through the 11 intercommunications in assembled silo of dust back flow 15 with the rice husk storehouse, the bottom of dust back flow 15 is less than air leakage pipe 13's bottom.
In the dust removing device of the present invention, when the atmospheric pressure of the ambient air is P0At the moment, the flow rate is Q1(5000m3About/h) pressure of P1The air flow continuously flows into the bin, and the dust removal fan Q at the moment* 2Has a ratio of Q1The air volume is 15-25%, namely Q* 2＞Q1So that the pressure P in the bin*＜P0＜P1. I.e. the pressure in the bin is always less than atmospheric pressure, so that dust does not leak out. The air volume and the air pressure of the cyclone separator are supplied by the dust removal fan, the separation speed in the cyclone separator is maintained, the cleanness of the exhausted air is ensured, and the separated dust is blown into the bin at high speed through the dust return pipe by the internal pressure of the cyclone separator. The air pressure of the dust removal fan can be about 1400Pa, and the air quantity is larger than that of the conveying fan of the rice husk bin, so that negative pressure in the bin is ensured, and dust cannot leak outwards.
The air volume of the dust removal fan is 15% -25% larger than that of the conveying fan of the rice hull bin, and is preferably about 20%, so that negative pressure is stored in the bin, and dust cannot leak out.
The bottom end of the dust return pipe is 1000-1500mm lower than the bottom end of the air discharge pipe so as to prevent dust from internally circulating.
The cross section area of the pipe opening of the dust return pipe is 1/15-1/25 of the cross section area of the pipe opening of the air discharge pipe, so that dust-containing gas sprayed at a high speed is not easy to return to the air suction opening.
The dust removal device does not use an air seal machine and does not worry about the blockage of the air seal machine.
The dust outlet of the cyclone separator directly enters 1/15-1/25 steel pipes of the area of the air inlet and is directly connected, the separated dust is blown into the bin at high speed by the internal pressure of the cyclone separator, and the air outlet of the dust is 1000-1500mm lower than the air inlet of the centrifugal fan, so as to prevent the internal circulation of the dust.
In the dust removing device and the corresponding rice hull bin, the dust removing fan is linked with the conveying fan, when the rice hull conveying fan operates, the dust removing fan also operates, and because the air volume of the dust removing fan is larger than that of the conveying fan, the bin is always in a negative pressure state, and dust cannot leak from gaps of the bin body; in addition, under the positive pressure action of the dust removal fan, the air speed entering the cyclone separator is high, the rotating speed of dust centrifugal separation can be achieved, and clean air is discharged from a discharge port of the cyclone separator.
The rice hull bin dust removing device and the rice hull bin have the advantages of low cost, long service life of equipment, better dust separation effect and low modification cost.
In this specification, the utility model has been described with reference to specific embodiments thereof. It will, however, be evident that various modifications and changes may be made thereto without departing from the broader spirit and scope of the utility model. The specification and drawings are, accordingly, to be regarded in an illustrative rather than a restrictive sense.
Claims (6)
1. The utility model provides a rice husk storehouse dust collector, its characterized in that, includes dust exhausting fan and cyclone, dust exhausting fan's inlet scoop is through letting out tuber pipe and rice husk storehouse intercommunication, dust exhausting fan's air exit with cyclone's entry is connected, cyclone's air exit will get rid of the air discharge after the dust and give up in the atmosphere, cyclone's dust exhaust mouth passes through dust back flow and rice husk storehouse intercommunication, the bottom of dust back flow is less than let out the bottom of tuber pipe.
2. The rice hull bin dust removing device according to claim 1, wherein the air volume of the dust removing fan is 15-25% larger than that of the rice hull conveying fan.
3. The rice hull bin dust removing device according to claim 1, wherein the bottom end of the dust return pipe is 1000-1500mm lower than the bottom end of the air discharge pipe.
4. The rice hull bin dust removing device according to claim 1, wherein the cross-sectional area of a pipe opening of the dust return pipe is 1/15-1/25 of the cross-sectional area of the pipe opening of the air leakage pipe.
5. The rice hull bin dust collector according to claim 1, wherein said dust extraction fan and cyclone separator are located at the top of said rice hull bin.
6. A rice hull silo characterized in that it comprises a conveying fan and a dust removal device as claimed in any one of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121567191.1U CN215465273U (en) | 2021-07-09 | 2021-07-09 | Rice hull bin dust collector and rice hull bin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121567191.1U CN215465273U (en) | 2021-07-09 | 2021-07-09 | Rice hull bin dust collector and rice hull bin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215465273U true CN215465273U (en) | 2022-01-11 |
Family
ID=79725814
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121567191.1U Active CN215465273U (en) | 2021-07-09 | 2021-07-09 | Rice hull bin dust collector and rice hull bin |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215465273U (en) |
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2021
- 2021-07-09 CN CN202121567191.1U patent/CN215465273U/en active Active
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