CN216619877U - Biomass powder feeding system - Google Patents
Biomass powder feeding system Download PDFInfo
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- CN216619877U CN216619877U CN202122825733.7U CN202122825733U CN216619877U CN 216619877 U CN216619877 U CN 216619877U CN 202122825733 U CN202122825733 U CN 202122825733U CN 216619877 U CN216619877 U CN 216619877U
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Abstract
The utility model relates to a biomass powder feeding system which comprises a biomass powder storage bin, wherein a feeding pipeline and a bag-type dust remover are arranged at the top of the biomass powder storage bin, the bottom of the biomass powder storage bin is connected with a mixer through a discharge hopper through a pipeline, an arch breaking device is arranged in the discharge hopper, and a spiral material conveyor is arranged at the bottom of the arch breaking device. Be equipped with out the hopper and break the device of encircleing, and frequency conversion screw feeder sets up bottom in going out the hopper, breaks the arch to the biomass powder earlier, carries immediately after breaking the arch, can effectively solve the material problem of taking a bridge.
Description
Technical Field
The utility model relates to the field of powder material conveying, in particular to a biomass powder feeding system.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
The biomass fuel refers to materials such as straw, sawdust, bagasse and rice chaff generated by agricultural and forestry wastes, and is prepared into various molded (such as block and granular) fuels through processes such as crushing, mixing, extruding and drying.
In the process of co-combustion of biomass by using a coal-fired unit, in order to enable the biomass fuel to obtain the surface area as large as possible, powdery biomass fuel can be adopted, biomass powder is lighter in weight compared with pulverized coal in the coal-fired unit, poor in mobility and high in volatile component, and is easily suspended in a storage space, so that dust explosion is easily caused on one hand, and a 'bridging' phenomenon easily occurs in the gravity feeding process on the other hand, thereby affecting the feeding efficiency.
SUMMERY OF THE UTILITY MODEL
In order to solve at least one technical problem in the background art, the utility model provides a biomass powder feeding system, which utilizes pneumatic conveying of biomass powder to a discharge hopper and utilizes an arch breaking device in the discharge hopper to break agglomerated materials so as to avoid bridging of the materials.
In order to achieve the purpose, the utility model adopts the following technical scheme:
the utility model provides a biomass powder feeding system which comprises a biomass powder storage bin, wherein a feeding pipeline and a bag-type dust collector are arranged at the top of the biomass powder storage bin, the bottom of the biomass powder storage bin is connected with a mixer through a discharge hopper through a pipeline, an arch breaking device is arranged in the discharge hopper, and a spiral material conveyor is arranged at the bottom of the arch breaking device.
The arch breaking device comprises a rotating shaft which penetrates through the discharge port in the horizontal direction, the rotating shaft is connected with a driving device, the driving device is connected to the outer portion of the side wall of the discharge hopper, a sealing device is arranged at the joint of the rotating shaft and the side wall of the discharge hopper, arch breaking blades are evenly arranged on the side portion of the rotating shaft, the rotating shaft is driven to rotate through the driving device, and arch breaking is achieved through the rotating action of the arch breaking blades.
An explosion-proof door is arranged at the top of the biomass powder storage bin.
And a weighing and metering device is arranged on a pipeline between the discharge hopper and the mixer, and the weighing and metering device is positioned at the outlet of the spiral material conveyor.
The mixer inlet is provided with a powder feeder and is connected with a discharge conveying pipeline.
Compared with the prior art, the above one or more technical schemes have the following beneficial effects:
1. be equipped with in the play hopper and break and encircle the device, and the bottom of frequency conversion spiral delivery machine setting in a hopper breaks the arch to the biomass powder earlier, carries immediately after breaking the arch, can effectively solve the material problem of taking a bridge.
2. The biomass powder feeding, storing and feeding functions form a module, and subsequent design and construction are facilitated.
3. The spiral material conveyer and the weighing and metering device can realize accurate material metering, and data are uploaded in real time and the load of the unit is followed.
4. The biomass powder storage bin, the spiral material conveying machine, the powder feeding machine and the mixer which are matched with each other are isolated from the external environment through pipelines, gas can be used as a high-pressure conveying medium, and safety of various expanded gas sensors in the biomass powder storage bin is matched.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the utility model, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the utility model and together with the description serve to explain the utility model and not to limit the utility model.
FIG. 1 is a schematic diagram of the overall structure of a biomass powder feeding system provided by one or more embodiments of the utility model;
FIG. 2 is a schematic structural diagram of an arch breaking device according to one or more embodiments of the present invention;
in fig. 1: 1. the biomass powder recycling device comprises a biomass powder storage bin, 2. a bag-type dust remover, 3. a discharge hopper, 4. an arch breaking device, 5. a spiral material conveying machine, 6. a weighing and metering device, 7. a powder feeding machine, 8. a mixer and 9. an explosion-proof door;
in fig. 2: 41. the driving device 42, the rotating shaft 43, the arch breaking blade 44 and the sealing device.
Detailed Description
The utility model is further described with reference to the following figures and examples.
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the utility model as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the utility model. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
Just as described in the background art, at the in-process that utilizes coal-fired unit to co-fire living beings powder, because living beings powder is lighter than the buggy weight in coal-fired unit, the mobility is poor, the volatile is high, on the one hand suspend easily in storage space, cause the dust explosion, on the other hand is using gravity type feeding in-process, living beings powder receives influences such as viscidity, moisture and static, easy caking or bonding are in a hopper inner wall, thereby a plurality of material pieces can block up out the hopper and appear "bridging" the efficiency that the phenomenon influences the feeding.
The bridging phenomenon (also called bridging phenomenon) is caused by that the friction coefficient between materials and the metal of the hopper is too large, the internal friction coefficient between the materials is too large, the cone angle of the hopper is too large, and the like, so that the materials form an arched material plug above the charging opening, and the uneven feeding and even the interruption of the feeding are caused. Specific reasons may be: the feeding height is too large, the pressure of the bottom material is large, and the materials are forced to be compacted to form a bridge; the particle size is too small, the friction motion among the particles is sliding friction, the friction coefficient is large, the material is not easy to flow, and a stable arch material bridge is formed at the bottom; the temperature of the solid conveying area is too high, so that the material at the bottom of the charging opening is molten, and the melt is similar to an adhesive to adhere the material on the subsurface into an arch; the cone angle of the hopper is too large, and the materials are not easy to fall smoothly.
Therefore, the following embodiment provides a biomass powder feeding system, which utilizes pneumatic conveying of biomass powder to a discharge hopper and utilizes an arch breaking device in the discharge hopper to break caked materials, thereby avoiding the bridging phenomenon of the materials.
The first embodiment is as follows:
as shown in fig. 1-2, the purpose of this embodiment is to provide a biomass powder feeding system, which includes a biomass powder storage bin 1, a feeding pipeline and a bag-type dust collector 2 are disposed at the top of the biomass powder storage bin 1, the bottom of the biomass powder storage bin is connected to a mixer 8 through a discharge hopper 3 via a pipeline, an arch breaking device 4 is disposed in the discharge hopper 3, and a spiral conveyor 5 is disposed at the bottom of the arch breaking device 4.
The top of the biomass powder storage bin 1 is also provided with an explosion-proof door 9.
And a weighing and metering device 6 is arranged on a pipeline between the discharge hopper 3 and the mixer 8, and the weighing and metering device 6 is positioned at the outlet of the spiral material conveyor 5.
The inlet of the mixer 8 is provided with a powder feeder 7, the mixer 8 is connected with a discharge conveying pipeline, the mixer 8 receives the material conveyed by the powder feeder 7, and the biomass powder material is conveyed into required equipment, in this embodiment, into a combustion chamber of a coal-fired unit by using a high-pressure conveying medium in the discharge conveying pipeline. The biomass powder is fluidized by adopting a pneumatic conveying pipeline so as to obtain the combustion efficiency as high as possible.
In this embodiment, in the living beings powder got into living beings powder storage storehouse through charge-in pipeline, charge-in pipeline and ejection of compact pipeline all are pneumatic transport pipeline, and pneumatic transport pipeline can be 1, 2 or many, is equipped with isolation valve (manual or power drive all can) and check valve on the pipeline, can realize 1, 2 or many pneumatic transport pipeline feeding simultaneously.
The bag-type dust collector 2 at the top of the biomass powder storage bin discharges redundant pneumatic conveying media out of the biomass powder storage bin in the biomass powder conveying process, and the biomass powder cannot leak out of the bin.
Under an abnormal working condition, when the pressure in the biomass powder storage bin reaches the detonation pressure, the explosion-proof door 9 is automatically opened to release the pressure, so that the biomass powder storage bin is protected; when the pressure in the biomass powder storage bin is reduced to the return pressure, the explosion-proof door 9 is automatically closed.
1 bottom in living beings powder warehouse is equipped with 1, 2 or a plurality of hopper 3 (inside lining stainless steel), goes out to be equipped with 1 set in the hopper 3, 2 sets or many sets break and encircle device 4, solves the material problem of taking a bridge that probably appears in the living beings powder warehouse 1.
The bottom in the discharge hopper 3 is provided with 1, 2 or a plurality of spiral material conveying machines 5, biomass powder is uniformly conveyed to a weighing and metering device 6, and the weighing and metering device 6 can upload weighing data in real time. The spiral material conveyor 5 adopts frequency conversion control and adjusts output in real time along with the load change of the unit.
The biomass powder firstly falls into the arch breaking device 4 through the discharge hopper 3, and enters the spiral conveyor 5 after being broken and then is conveyed into the weighing and metering device 6.
The biomass powder is measured by the measuring and weighing device 6, falls into 1, 2 or a plurality of powder feeders 7, falls into 1, 2 or a plurality of mixers 8, and is finally conveyed to the hearth of the boiler for burning through a high-pressure conveying medium. The powder feeder 7 can make the blanking smoother.
The biomass powder storage bin 1 is internally provided with a monitoring and protecting module which can monitor the temperature of the biomass powder in the bin and the concentration of inflammable gas in real time, and when the value exceeds a set allowable value, the inerting protecting module is automatically started to carry out inerting protection, so that the biomass powder is prevented from spontaneous combustion.
A material level monitoring module is also arranged in the biomass powder storage bin, so that the material level condition in the bin can be monitored in real time; a fire-fighting water system is arranged outside the biomass powder storage bin and is used for extinguishing fire when a fire disaster occurs.
The discharge hopper of the system is internally provided with an arch breaking device, the variable-frequency spiral conveyor is arranged at the bottom in the discharge hopper, biomass powder is firstly broken and immediately conveyed after being broken, and the problem of bridging materials can be effectively solved.
The biomass powder feeding, storing and feeding functions form a module, and subsequent design and construction are facilitated.
The spiral material conveyer and the weighing and metering device can realize accurate material metering, and data are uploaded in real time and the load of the unit is followed.
The biomass powder storage bin, the spiral material conveying machine, the powder feeding machine and the mixer which are matched with each other are isolated from the external environment through pipelines, gas can be used as a high-pressure conveying medium, and safety of various expanded gas sensors in the biomass powder storage bin is matched.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A living beings powder feed system which characterized in that: including living beings powder storehouse, living beings powder storehouse top is equipped with charge-in pipeline and sack cleaner, and the bottom is through going out the hopper and through the pipe connection blender, is equipped with in going out the hopper and breaks and encircles the device, breaks and encircles the device bottom and be equipped with the defeated material machine of spiral.
2. A biomass powder feed system as claimed in claim 1, wherein: the arch breaking device comprises a rotating shaft penetrating through the discharge hole along the horizontal direction, and arch breaking blades are uniformly arranged on the side part of the rotating shaft.
3. A biomass powder feed system as claimed in claim 2, wherein: the rotating shaft is connected with a driving device.
4. A biomass powder feed system as claimed in claim 3, wherein: the driving device is connected to the outer portion of the side wall of the discharge hopper.
5. A biomass powder feeding system as claimed in claim 4, wherein: and a sealing device is arranged at the joint of the rotating shaft and the side wall of the discharge hopper.
6. A biomass powder feeding system as claimed in claim 5, wherein: the driving device drives the rotating shaft to rotate, and arch breaking is realized by utilizing the rotating action of the arch breaking blades.
7. A biomass powder feed system as claimed in claim 1, wherein: and an explosion-proof door is arranged at the top of the biomass powder storage bin.
8. A biomass powder feed system as claimed in claim 1, wherein: and a weighing and metering device is arranged on a pipeline between the discharge hopper and the mixer.
9. A biomass powder feed system as claimed in claim 8, wherein: the weighing and metering device is positioned at the outlet of the spiral material conveyer.
10. A biomass powder feed system as claimed in claim 1, wherein: and a powder feeder is arranged at the inlet of the mixer, and the mixer is connected with a discharge conveying pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122825733.7U CN216619877U (en) | 2021-11-17 | 2021-11-17 | Biomass powder feeding system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122825733.7U CN216619877U (en) | 2021-11-17 | 2021-11-17 | Biomass powder feeding system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216619877U true CN216619877U (en) | 2022-05-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122825733.7U Active CN216619877U (en) | 2021-11-17 | 2021-11-17 | Biomass powder feeding system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216619877U (en) |
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2021
- 2021-11-17 CN CN202122825733.7U patent/CN216619877U/en active Active
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