CN202757121U - Stokehole screw feeder of biomass fluidized bed - Google Patents
Stokehole screw feeder of biomass fluidized bed Download PDFInfo
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- CN202757121U CN202757121U CN 201220121777 CN201220121777U CN202757121U CN 202757121 U CN202757121 U CN 202757121U CN 201220121777 CN201220121777 CN 201220121777 CN 201220121777 U CN201220121777 U CN 201220121777U CN 202757121 U CN202757121 U CN 202757121U
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- feed bin
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- impeller
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Abstract
The utility model discloses a stokehole screw feeder of a biomass fluidized bed. The stokehole screw feeder of the biomass fluidized bed comprises a feed bin, a cylindrical trough, a screw shaft and a screw shaft drive device, the feed bin is provided with a feed port and a discharge port and connected with the trough, the discharge port of the feed bin is communicated with the trough, the trough is provided with a material outlet, the screw shaft is mounted in the trough, provided with screw blades and connected with the screw drive device, and the screw feeder is provided with an impeller type kick-out device which is arranged at the discharge port of the feed bin and connected with an impeller drive device. The impeller type kick-out device arranged below the feed bin is capable of controlling material flow by controlling the rotating speed of impellers, crushing caked materials to enable the materials to fall down uniformly and performing secondary crushing for the materials. The trapezoidal feed bin is adopted, and axial guide ribs are uniformly arranged on the inner wall of the trough. The stokehole screw feeder of the biomass fluidized bed is applicable to delivery of biomass fuels such as particles, loose fuel and fine powder fuel.
Description
Technical field
The utility model belongs to the material handling machinery field, specifically refers to a kind of biomass fluid bed stokehold screw(-type) feeder.
Background technology
In the biomass fuel feeding device, for the biomass boiler stokehold feeding system, often can use screw(-type) feeder.Screw(-type) feeder is by conveying worm, and charging and discharging mouth, feed bin and drive unit form, and conveying worm wherein is comprised of screw shaft, helical blade and hopper, and drive unit generally adopts motor.Screw shaft is installed on the bearing block at hopper two ends by bearing.When biomass fuel adds from charging aperture, along with the motor-driven screw shaft rotates, fuel is promoted to advance to discharging opening by the helical blade of screw shaft, thereby finishes to the operation of boiler feed.
Yet helical blade also has tangential force to the active force of material except axial force, tangential force has also increased simultaneously the pressure of material to container inner wall, thereby increased frictional force so that material rolls in spiral, stirs and make circular motion; Because pile of biomass density is little, bulk density increases when being squeezed, and produces easily caking, causes the spiral discharging mouth to stop up.Owing to the non-constant of self drainage after the living beings fragmentation, cause easily feed bin to be put up a bridge in addition, the blanking difficulty.When the feed bin charging aperture is opened greatlyr, can cause the feed stage material sharply to increase simultaneously, the steering resistance of helical blade increases, and causes the motor overload operation, motor is quit work or burns, and causes charging to be interrupted; When charging aperture was opened too smallly, in the little situation of material density, the charging aperture upper end easily produced the material dead band, also easily made feed bin knot arch, caused batching to interrupt.
The utility model content
The purpose of this utility model provides smoothly biomass fluid bed stokehold screw(-type) feeder of a kind of feeding, and this screw(-type) feeder is applicable to the conveying of the biomass fuels such as particle, loose fuel, fine powder fuel.
Above-mentioned purpose of the present utility model realizes by the following technical solutions: a kind of biomass fluid bed stokehold screw(-type) feeder, comprise feed bin, the cylindrical shape hopper, helical axis and helical axis drive unit, feed bin has charging aperture and feed opening, feed bin is connected with hopper, and feed opening and the hopper of feed bin are connected, described hopper has discharging opening, described helical axis is installed in the hopper, helical axis has helical blade, helical axis is connected with described helical axis drive unit, it is characterized in that: this screw(-type) feeder is provided with the vane type broadcast feeder at the feed opening place of feed bin, and this vane type broadcast feeder is connected with impeller driving device.
Screw(-type) feeder of the present utility model because the vane type broadcast feeder that arranges can be controlled mass flow by the rotating speed of control impeller under the feed bin, indirectly control the density of material in the hopper, prevent the material conglomeration, and so that charging is even; The material that broadcast feeder is broken up conglomeration evenly falls material, also can play the effect of material being carried out second-time breakage;
Described vane type broadcast feeder is two bilobed wheel broadcast feeders that the identical impeller of structure forms, and the wheel shaft along continuous straight runs of two impellers is arranged in parallel, and the axis of impeller wheel shaft parallels with the axis of described helical axis.
Each impeller in described two impellers all has eight impeller blades radially dispersing and be evenly arranged, and the angle between the adjacent impeller blade is 45 °.
In the described vane type broadcast feeder between the axle centre of two impellers apart from the outside diameter D of S less than impeller, this is 0.90～0.95: 1 apart from the ratio between S and the outside diameter D.
In the utility model, described feed bin is that forward and backward, right three walls all vertically vertically arrange and the up-small and down-big trapezoidal feed bin of the downward-sloping setting of left wall, described feed bin and hopper welding.Adopt trapezoidal feed bin when preventing material bridging, to make the maximization of feed bin volume.
In the utility model, axially evenly be provided with many guide ribs along helical axis on the internal face of described hopper.
Described guide rib is eight, and the cross section of described guide rib is trapezoidal.
The utility model is at the axial stock guide that trough sidewalls arranges, and plays the effect that reduces the material circular motion, suppresses the material conglomeration of rolling in spiral, increases the thrust of screw rod, prevents that hopper from stopping up; The rib of trapezium structure can prevent that material from concentrating in the ditch, causes rill to block, and loses anti-skidding effect.
Compared with prior art, screw(-type) feeder of the present utility model has adopted the feed bin of half trapezium structure to make the maximization of feed bin volume when preventing material bridging; Because the vane type broadcast feeder that arranges under the feed bin can be controlled mass flow by the rotating speed of control impeller, indirectly control the density of material in the hopper, prevent the material conglomeration, and so that charging is even; The material that broadcast feeder is broken up conglomeration evenly falls material, also can play the effect of material being carried out second-time breakage; The axial stock guide that arranges on the trough sidewalls simultaneously plays the effect that reduces the material circular motion, suppresses the material conglomeration of rolling in spiral, increases the thrust of screw rod, prevents that hopper from stopping up; The rib of trapezium structure can prevent that material from concentrating in the ditch, causes rill to block, and loses anti-skidding effect.Therefore, the utility model is applicable to particle, loose fuel, the conveying of the biomass fuels such as living beings fine powder fuel.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Fig. 1 is the whole assembly structure figure of the utility model screw(-type) feeder;
Fig. 2 is the A-A cutaway view among Fig. 1;
Fig. 3 is the B-B cutaway view among Fig. 1;
Among the figure: 1, helical axis bearing 2, impeller bearing 3, feed bin; 4, the first impeller;
5, gear 6, sprocket wheel; 7, buncher 8, chain drive-belt 9, sprocket wheel;
10, conveying motor 11, guide rib 12, helical axis 13, hopper;
14, support 15, the second impeller
The specific embodiment
A kind of biomass fluid bed stokehold screw(-type) feeder as shown in Figure 1 to Figure 3, comprise support 14, feed bin 3, cylindrical shape hopper 13, helical axis 12 and helical axis drive unit, this helical axis drive unit comprises conveying motor 10, helical axis bearing 1 and bearing block, the output of conveying motor 10 is connected with helical axis 12, feed bin 3 has charging aperture and feed opening, before feed bin 3 is, after, right three walls are all vertical vertically to be arranged and the up-small and down-big trapezoidal feed bin of the downward-sloping setting of left wall, feed bin 3 and hopper 13 welding, and the feed opening of feed bin 3 and hopper 13 are connected, hopper 13 has discharging opening, helical axis 12 is installed in the hopper 13, helical axis 12 has a plurality of helical blades that arrange vertically, helical axis 12 is connected with the helical axis drive unit, driven by the helical axis drive unit, this screw(-type) feeder is provided with the vane type broadcast feeder at the feed opening place of feed bin 3, and this vane type broadcast feeder is connected with impeller driving device.
Vane type broadcast feeder in the present embodiment is two bilobed wheel broadcast feeders that the identical impeller of structure forms, the wheel shaft along continuous straight runs of two impellers is arranged in parallel, two impellers are respectively the first impeller 4 and the second impeller 15, the axis of two impeller wheel shafts all parallels with the axis of helical axis 12, each impeller in two impellers all has eight impeller blades radially dispersing and be evenly arranged, angle between the adjacent impeller blade is 45 °, in this vane type broadcast feeder between the axle centre of two impellers apart from the outside diameter D of S less than impeller, this is 0.90: 1 apart from the ratio between S and the outside diameter D, when the blade of the first impeller 4 goes to horizontal level, it divides the angle between the second impeller 15 adjacent blades equally, two impellers rotate even blanking to the centre, impeller driving device comprises buncher 7, sprocket wheel 6, sprocket wheel 9, chain drive-belt 8, gear 5, impeller bearing 2 and bearing block, the first impeller 4 is by the sprocket wheel 6 outside the feed bin 3, sprocket wheel 9 links to each other with buncher 7 with chain drive-belt 8, can adjust discharge quantity by the rotating speed of regulating buncher, thereby the inventory in the hopper 13 of control below effectively prevents the obstruction of hopper 13 interior materials.
Axially evenly be provided with eight guide ribs 11 along helical axis 12 on the internal face of hopper 13, the cross section of this guide rib 11 is trapezoidal, material evenly drops in the hopper 13 by the vane type material feeder, promoted to advance by helical axis 12 rotations, guide rib 11 establishments the circular motion that by spiral material tangential force produced of material in the process of advancing, reduced the resistance of material to spiral, suppress simultaneously material in helical duct, roll the extruding conglomeration, prevent that effectively feed bin 3 from stopping up, make the material smooth delivery of power to discharging opening, thereby finish the front-furnace feeding task of biomass boiler.
As the conversion of present embodiment, the impeller blade in each impeller in two impellers also can be the multi-discs such as 4 or 5 or 6 or 7, and a plurality of impeller blades all have radially to be dispersed and be evenly arranged.
As the conversion of present embodiment, in the vane type broadcast feeder between the axle centre of two impellers also can be 0.90～0.95 apart from the ratio between S and the outside diameter D: value between 1.
As the conversion of present embodiment, described guide rib 11 also can be many of 4 or 5 or 6 or 7 etc., many guide ribs 11 axially evenly arranging along helical axis 12 on the internal face of hopper 13.
As the conversion of present embodiment, described impeller driving device also can adopt buncher and band wheel mechanism except adopting buncher and chain-wheel mechanism; Perhaps adopt buncher and gear mechanism; Perhaps directly adopt buncher or servomotor, the output shaft of motor directly connects the wheel shaft of impeller, and this impeller driving device can drive two wheel rotation to realize material seeding, break up agglomerating material, to prevent that the material conglomeration from getting final product.
Above-described embodiment of the present utility model is not the restriction to the utility model protection domain; embodiment of the present utility model is not limited to this; according to foregoing of the present utility model; ordinary skill knowledge and customary means according to this area; do not breaking away under the above-mentioned basic fundamental thought of the utility model prerequisite; modification, replacement or the change of other various ways that the utility model said structure is made all should drop within the protection domain of the present utility model.
Claims (8)
1. biomass fluid bed stokehold screw(-type) feeder, comprise feed bin, cylindrical shape hopper, helical axis and helical axis drive unit, feed bin has charging aperture and feed opening, feed bin is connected with hopper, and feed opening and the hopper of feed bin are connected, described hopper has discharging opening, described helical axis is installed in the hopper, helical axis has helical blade, helical axis is connected with described helical axis drive unit, it is characterized in that: this screw(-type) feeder is provided with the vane type broadcast feeder at the feed opening place of feed bin, and this vane type broadcast feeder is connected with impeller driving device.
2. biomass fluid bed stokehold according to claim 1 screw(-type) feeder, it is characterized in that: described vane type broadcast feeder is two bilobed wheel broadcast feeders that the identical impeller of structure forms, the wheel shaft along continuous straight runs of two impellers is arranged in parallel, and the axis of impeller wheel shaft parallels with the axis of described helical axis.
3. biomass fluid bed stokehold according to claim 2 screw(-type) feeder, it is characterized in that: each impeller in described two impellers all has eight impeller blades radially dispersing and be evenly arranged, and the angle between the adjacent impeller blade is 45 °.
4. biomass fluid bed stokehold according to claim 3 screw(-type) feeder, it is characterized in that: in the described vane type broadcast feeder between the axle centre of two impellers apart from the outside diameter D of S less than impeller, this is 0.90～0.95: 1 apart from the ratio between S and the outside diameter D.
5. biomass fluid bed stokehold according to claim 1 screw(-type) feeder, it is characterized in that: described feed bin is that forward and backward, right three walls all vertically vertically arrange and the up-small and down-big trapezoidal feed bin of the downward-sloping setting of left wall, described feed bin and hopper welding.
6. according to claim 1 to 5 each described biomass fluid bed stokehold screw(-type) feeders, it is characterized in that: axially evenly be provided with many guide ribs along helical axis on the internal face of described hopper.
7. biomass fluid bed stokehold according to claim 6 screw(-type) feeder, it is characterized in that: described guide rib is eight.
8. biomass fluid bed stokehold according to claim 6 screw(-type) feeder, it is characterized in that: the cross section of described guide rib is trapezoidal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220121777 CN202757121U (en) | 2012-03-27 | 2012-03-27 | Stokehole screw feeder of biomass fluidized bed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220121777 CN202757121U (en) | 2012-03-27 | 2012-03-27 | Stokehole screw feeder of biomass fluidized bed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202757121U true CN202757121U (en) | 2013-02-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220121777 Expired - Lifetime CN202757121U (en) | 2012-03-27 | 2012-03-27 | Stokehole screw feeder of biomass fluidized bed |
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| Country | Link |
|---|---|
| CN (1) | CN202757121U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103115373A (en) * | 2013-03-11 | 2013-05-22 | 张家港市浙华科技有限公司 | Biomass electricity generating furnace front material evening device |
| CN115175864A (en) * | 2021-01-18 | 2022-10-11 | 方甡 | Feeding device |
-
2012
- 2012-03-27 CN CN 201220121777 patent/CN202757121U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103115373A (en) * | 2013-03-11 | 2013-05-22 | 张家港市浙华科技有限公司 | Biomass electricity generating furnace front material evening device |
| CN115175864A (en) * | 2021-01-18 | 2022-10-11 | 方甡 | Feeding device |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130227 |