CN217109502U - Biomass combustion power generation equipment - Google Patents

Abstract

The utility model relates to a biomass combustion power generation device, which comprises a feeding device which is obliquely distributed, wherein the lower end of the feeding device is a feeding end, the higher end of the feeding device is a discharging end, the discharging end of the feeding device is provided with a combustion device, the combustion device comprises a combustion furnace, four corners of the bottom of the combustion furnace are provided with second support legs, the combustion furnace is internally provided with a first clapboard and a second clapboard in sequence, the first clapboard divides the combustion furnace into a water storage tank and a boiler, the second clapboard divides the interior of the boiler into a combustion chamber and an ash falling chamber, the top of the combustion chamber is provided with a feeding port communicated with the discharging end of the feeding device, the front of the combustion chamber is provided with an ignition port, the top surface of the second clapboard is an inclined plane, the middle position of the second clapboard is provided with a plurality of ash falling holes, the inner bottom surface of the ash falling chamber is an inclined plane, the lower position of the inner bottom surface of the ash falling chamber is communicated with an ash outlet pipeline, and the ash falling chamber is internally provided with an ash blocking component and a driving component, the utility model discloses when the clearance lime-ash, need not interrupt the electricity generation process to can improve the generated energy.

Description

Biomass combustion power generation equipment

Technical Field

The utility model belongs to the technical field of biomass power generation equipment, especially, relate to a power generation equipment of biomass combustion.

Background

Biomass power generation is power generation by using biomass energy of biomass, and is one of renewable energy power generation, wherein agricultural and forestry wastes are directly combusted to generate power, for example, biomass such as crop straws and the like is combusted to generate power, when the crop straws are combusted as fuel, the crop straws are usually crushed into short sections to be fully combusted, the crop straws are added into a boiler by using a feeding device, but the crop straws generate a large amount of ash after being combusted in the boiler, if the ash is not cleaned in time, the subsequent combustion of the crop straws is directly influenced, so that fuel is wasted, most of the ash in the boiler is manually cleaned at present, and the labor intensity is high; and the fuel in the boiler needs to be cleaned after being burnt and sintered, so that the power generation process has to be interrupted when the ash is cleaned, thereby reducing the power generation amount, and the defects and shortcomings in the prior art still exist.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a biomass combustion power generation device, which solves the problems that most of the ash in the boiler is manually cleaned at present, and the labor intensity is high; and the fuel in the boiler needs to be cleaned after being burnt and sintered, so that the power generation process has to be interrupted when the ash is cleaned, thereby reducing the power generation amount.

In order to solve the problem, the utility model discloses the technical scheme who takes:

the utility model provides a biomass combustion's power generation facility, includes the feeder that the slope distributes, the lower one end of feeder is the feed end, and higher one end is the discharge end, its characterized in that: the discharge end of the feeding device is provided with a combustion device, the combustion device comprises a combustion furnace which is vertically distributed and is provided with a cavity, four corners of the bottom of the combustion furnace are respectively provided with a second support leg which is vertically and oppositely distributed, a first clapboard and a second clapboard which are horizontally distributed are sequentially arranged in the combustion furnace from top to bottom, the first clapboard divides the combustion furnace into a water storage tank and a boiler, the second clapboard divides the interior of the boiler into a combustion chamber and an ash falling chamber, the top surface of the water storage tank is communicated with a steam pipeline which is vertically distributed, one side of the top of the water storage tank is communicated with a water inlet pipeline of which the water outlet end is positioned at the bottom in the water storage tank, the top of one side of the combustion chamber close to the feeding device is provided with a feed inlet which is communicated with the discharge end of the feeding device, the other side of the combustion chamber is communicated with a smoke exhaust device, the front of the combustion chamber is provided with an ignition port, and the top surface of the second clapboard is an inclined surface, and the middle position of the second clapboard is vertically provided with a plurality of ash falling holes which are distributed at equal intervals along the length direction of the second clapboard, the inner bottom surface of the ash falling chamber is an inclined surface, the lower position of the inner bottom surface of the ash falling chamber is communicated with ash outlet pipelines which are vertically distributed, an ash blocking component and a driving component are sequentially arranged in the ash falling chamber from top to bottom, the ash blocking component comprises ash blocking plates which are connected with the ash dropping chamber in a sliding way in the vertical direction and are distributed horizontally, a plurality of hole plugging plugs which are equal to the number of the dust falling holes and are opposite to the positions of the dust falling holes are vertically arranged on the dust plugging plate, the drive assembly is including being located the drive shaft that blocks up grey board below and level set up, the drive shaft both ends rotate with the ash falling chamber respectively and are connected, and the one end that feeder was kept away from to the drive shaft is passed the ash falling chamber and is rotated and be connected with and install on the outer wall of ash falling chamber and have braking function's driving motor, and the fixed cover in drive shaft both ends is equipped with the eccentric wheel that the symmetry set up.

Further, first groove structures are formed in the inner walls of the ash falling chambers at the two ends of the ash blocking plates, guide rods which are vertically distributed are fixedly connected in the first groove structures, the two ends of each ash blocking plate are sleeved on the guide rods respectively, and the guide rods above the ash blocking plates are sleeved with reset springs respectively.

Further, feeder includes the chassis that the level set up, chassis bottom surface four corners all is provided with the universal wheel of taking self-locking function, is provided with the screw conveyer that the slope distributes on the chassis top surface, screw conveyer's lower one end is the feed end, and higher one end is the discharge end, is linked together through ejection of compact pipeline between screw conveyer's the discharge end and the feed inlet, screw conveyer's feed end and chassis fixed connection, still two first landing legs that set up relatively and the slope distributes between screw conveyer and the chassis.

Further, screw conveyer's feed end is provided with blank device, blank device is including cutting the workbin, it is top surface open-ended box structure to cut the workbin, and blank bottom of the case four corners all is provided with vertical relative distribution's third landing leg, and the one end opening that screw conveyer was kept away from to the blank case is the feed inlet, and blank case other end opening is the discharge gate that is less than the feed inlet, and the blank case discharge gate is located the top of screw conveyer feed end, is provided with the blank sword in the blank case, the one end that the blank sword is close to the blank case feed inlet extends to the blank case outside and fixedly connected with handle, and the blank sword other end is articulated with the blank case.

Furthermore, handles installed on the outer wall of the material cutting box are arranged at four corners outside the material cutting box, the top ends of the third support legs are fixedly connected with the material cutting box, the bottom ends of the third support legs are fixedly connected with horizontally distributed supports, and reinforcing rib plates are arranged between the supports and the third support legs.

Furthermore, the smoke exhaust device comprises a smoke exhaust pipeline, the smoke inlet end of the smoke exhaust pipeline is positioned at the top of the combustion chamber and communicated with the combustion chamber, the smoke outlet end of the smoke exhaust pipeline is communicated with a smoke exhaust machine, and a reinforcing rod is further arranged between the smoke exhaust pipeline and the outer wall of the boiler.

Furthermore, the combustion chamber is also communicated with a blowing device, the blowing device comprises a blower arranged on the outer wall of the combustion furnace, and the blower is communicated with the interior of the combustion chamber through a blowing pipeline.

Adopt above-mentioned technical scheme, the beneficial effects of the utility model are that:

the utility model can convey fuel, namely crushed crop straws, into the combustion chamber of the combustion device by arranging the feeding device; the combustion furnace is divided into a water storage tank and a boiler by arranging a first partition plate, the boiler is divided into a combustion chamber and an ash falling chamber by arranging a second partition plate, so that water in the water storage tank can be heated after crop straws in the combustion chamber are combusted, the water is changed into water vapor, when the boiler is used, a steam pipeline communicated with the water storage tank is communicated with a steam turbine, and finally, the water vapor is injected into the steam turbine through the steam pipeline so as to drive the steam turbine to operate and drive a generator to generate electricity; secondly, by arranging the water inlet pipeline, when the water-saving device is used, the water inlet pipeline is sequentially communicated with a water pump and a water source and used for adding water into the water storage tank, and in addition, the smoke generated in the combustion chamber can be discharged by arranging the smoke extraction device; finally, through seting up the ash falling hole on the second baffle, set up stifled grey subassembly and drive assembly in the ash falling indoor, can make stifled grey board go up and down along vertical direction when drive assembly in the operation process, thereby can drive stifled hole stopper and open and close the ash falling hole, the lime-ash in the combustion chamber will fall into the ash falling indoor automatically like this, final lime-ash can be through going out the ash pipe discharge combustion chamber outdoor, thereby can reduce workman intensity of labour, and fall into the in-process in the ash falling indoor at the lime-ash, the fuel in the combustion chamber is crop straw still can continue the burning promptly, like this when clearing up the lime-ash, need not interrupt the power generation process, thereby can improve the generated energy.

Drawings

Fig. 1 is one of the schematic structural diagrams of the present invention;

fig. 2 is a second schematic structural diagram of the present invention;

FIG. 3 is an enlarged partial view of the structure at A in FIG. 1;

fig. 4 is a partially enlarged structural diagram at B in fig. 2.

Reference numerals: 1. a combustion device; 11. a combustion furnace; 12. a second leg; 13. a first separator; 14. a second separator; 141. ash falling holes; 15. a water storage tank; 16. a boiler; 161. a combustion chamber; 162. an ash falling chamber; 163. a feed inlet; 164. a first groove structure; 165. a guide bar; 166. a return spring; 17. an ash discharge pipeline; 18. a dust plugging component; 181. blocking the ash plate; 182. plugging the hole; 19. a drive assembly; 191. a drive shaft; 192. a drive motor; 193. an eccentric wheel; 2. a feeding device; 21. a chassis; 22. a universal wheel; 23. a screw conveyor; 24. a discharge pipeline; 25. a first leg; 3. a material cutting device; 31. a material cutting box; 32. a material cutting knife; 33. a handle; 34. a handle; 35. a support; 36. a reinforcing rib plate; 37. a third leg; 4. a smoking device; 41. a smoke extraction pipeline; 42. a smoke extractor; 43. a reinforcing bar; 5. a blower device; 51. a blower; 52. a blast duct; 6. a steam pipe; 7. a water inlet pipeline.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, embodiments of the present invention are described in further detail below with reference to the accompanying drawings.

As shown in fig. 1 to 4, the utility model provides a biomass combustion power generation device, which comprises a feeding device 2 which is distributed obliquely, wherein the lower end of the feeding device 2 is a feeding end, the higher end is a discharging end, the discharging end of the feeding device 2 is provided with a combustion device 1, and the feeding device 2 is used for conveying fuel, namely crushed crop straws, into the combustion device 1; the combustion device 1 comprises a combustion furnace 11 which is vertically distributed and provided with a cavity, wherein four corners of the bottom of the combustion furnace 11 are respectively provided with a second supporting leg 12 which is vertically and oppositely distributed, a first partition plate 13 and a second partition plate 14 which are horizontally distributed are sequentially arranged in the combustion furnace 11 from top to bottom, the first partition plate 13 divides the interior of the combustion furnace 11 into a water storage tank 15 and a boiler 16, the second partition plate 14 divides the interior of the boiler 16 into a combustion chamber 161 and an ash falling chamber 162, the top surface of the water storage tank 15 is communicated with a steam pipeline 6 which is vertically distributed, the steam pipeline 6 is communicated with a steam turbine when in use, and the steam turbine is connected with a generator; one side of the top of the water storage tank 15 is communicated with a water inlet pipeline 7 with a water outlet end positioned at the bottom in the water storage tank 15, and the water inlet pipeline 7 is sequentially communicated with a water pump and a water source when in use; a feed inlet 163 is formed in the top of one side, close to the feeding device 2, of the combustion chamber 161, the feed inlet 163 is communicated with the discharge end of the feeding device 2, a smoke exhaust device 4 is communicated with the other side of the combustion chamber 161, an ignition port is formed in the front face of the combustion chamber 161, the ignition port is not shown in the figure, the combustion chamber 161 is used for containing and combusting crop straws, and the smoke exhaust device 4 is used for exhausting smoke generated in the combustion chamber 161; the top surface of the second partition plate 14 is an inclined surface, a plurality of ash falling holes 141 which are equidistantly distributed along the length direction of the second partition plate 14 are vertically formed in the middle position of the second partition plate 14, the inner bottom surface of the ash falling chamber 162 is an inclined surface, the lower position of the inner bottom surface of the ash falling chamber 162 is communicated with an ash outlet pipeline 17 which is vertically distributed, and the ash outlet pipeline 17 is communicated with an ash collecting box when in use; the ash blocking component 18 and the driving component 19 are sequentially arranged in the ash falling chamber 162 from top to bottom, the ash blocking component 18 comprises ash blocking plates 181 which are in sliding connection with the ash falling chamber 162 in the vertical direction and are horizontally distributed, namely, the ash blocking plates 181 can move in the ash falling chamber 162 in the vertical direction, a plurality of hole blocking plugs 182 which are equal to the ash falling holes 141 in number and are opposite in position are vertically arranged on the ash blocking plates 181, and the hole blocking plugs 182 are used for opening and closing the ash falling holes 141; the driving assembly 19 comprises a driving shaft 191 which is positioned below the ash blocking plate 181 and is horizontally arranged, two ends of the driving shaft 191 are respectively rotatably connected with the ash falling chamber 162, one end of the driving shaft 191, which is far away from the feeding device 2, penetrates through the ash falling chamber 162 and is then rotatably connected with a driving motor 192 which is arranged on the outer wall of the ash falling chamber 162 and has a braking function, two ends of the driving shaft 191 are fixedly sleeved with symmetrically arranged eccentric wheels 193, specifically, the driving motor 192 is provided with a power supply and a start-stop switch, and the driving motor 192 can fix the position of the eccentric wheel 193 through the braking function, when the distance from the top of the eccentric wheel 193 to the driving shaft 191 is larger than the distance from the bottom of the eccentric wheel 193 to the driving shaft 191, the hole blocking plug 182 can block the ash falling hole 141; when the distance from the top of the eccentric wheel 193 to the driving shaft 191 is smaller than the distance from the bottom of the eccentric wheel 193 to the driving shaft 191 as shown in fig. 2, the hole blocking plug 182 can open the ash falling hole 141, so that ash can automatically fall into the ash falling chamber 162, and thus the ash blocking plate 181 can be lifted in the vertical direction during the operation of the driving assembly 19, so that the hole blocking plug 182 can be driven to open and close the ash falling hole 141.

In general, by providing the feeding device 2, fuel, i.e., crushed crop straw, can be fed into the combustion chamber 161 of the combustion device 1; the combustion furnace 11 is divided into a water storage tank 15 and a boiler 16 by arranging a first partition plate 13, the boiler 16 is divided into a combustion chamber 161 and an ash falling chamber 162 by arranging a second partition plate 14, so that water in the water storage tank 15 can be heated after crop straws in the combustion chamber 161 are combusted, the water is changed into water vapor, when the combustion furnace is used, a steam pipeline 6 communicated with the water storage tank 15 is communicated with a steam turbine, and finally, the water vapor is injected into the steam turbine through the steam pipeline 6 to drive the steam turbine to operate and drive a generator to generate electricity; secondly, by arranging the water inlet pipeline 7, when the device is used, the water inlet pipeline 7 is sequentially communicated with a water pump and a water source and used for adding water into the water storage tank 15, and in addition, the smoke generated in the combustion chamber 161 can be discharged by arranging the smoke extraction device 4; finally, the ash falling hole 141 is formed in the second partition plate 14, the ash blocking assembly 18 and the driving assembly 19 are arranged in the ash falling chamber 162, the ash blocking plate 181 can be lifted along the vertical direction when the driving assembly 19 operates, so that the ash blocking hole plug 182 can be driven to open and close the ash falling hole 141, ash in the combustion chamber 161 can automatically fall into the ash falling chamber 162, and finally the ash can be discharged out of the combustion chamber 161 through the ash discharging pipeline 17, so that the labor intensity of workers can be reduced, and in the process that the ash falls into the ash falling chamber 162, fuel, namely crop straws in the combustion chamber 161 can still continuously burn, so that the power generation process is not interrupted when the ash is cleaned, and the power generation capacity can be improved.

Further, the sliding connection of the ash blocking plate 181 in the vertical direction with the ash dropping chamber 162 is as follows: as shown in fig. 1 to 4, the inner walls of the ash falling chambers 162 at the two ends of the ash blocking plate 181 are respectively provided with a first groove structure 164, the first groove structures 164 are respectively and fixedly connected with guide rods 165 which are vertically distributed, the two ends of the ash blocking plate 181 are respectively sleeved on the guide rods 165, and the guide rods 165 above the ash blocking plate 181 are respectively sleeved with a return spring 166; when the hole plugging plug 182 is changed from plugging the dust falling hole 141 to opening the dust falling hole 141, the return spring 166 can have a return effect on the dust plugging plate 181; through such a mode of setting, stifled grey board 181 can be in vertical direction with ash falling chamber 162 sliding connection, stifled grey board 181 can follow vertical direction lift under drive assembly 19's drive promptly to can drive stifled hole stopper 182 and open and close ash falling hole 141.

The specific structure of the feeding device 2 is as follows: as shown in fig. 1 and 2, the feeding device 2 includes a chassis 21 horizontally disposed, four corners of a bottom surface of the chassis 21 are respectively provided with a universal wheel 22 with a self-locking function, the universal wheels 22 can facilitate moving the position of the feeding device 2, and can fix the position of the feeding device 2 through the self-locking function of the universal wheels 22; the top surface of the chassis 21 is provided with a spiral conveyor 23 which is obliquely distributed, the lower end of the spiral conveyor 23 is a feeding end, the higher end of the spiral conveyor 23 is a discharging end, the discharging end of the spiral conveyor 23 is communicated with the feeding hole 163 through a discharging pipeline 24, the feeding end of the spiral conveyor 23 is fixedly connected with the chassis 21, two first support legs 25 which are oppositely arranged and obliquely distributed are fixedly connected between the spiral conveyor 23 and the chassis 21, specifically, the first support legs 25 are used for supporting and fixing the spiral conveyor 23 on the chassis 21, and the spiral conveyor 23 has the same structure as the existing spiral conveyor and is used for conveying fuel into the combustion chamber 161, namely, crop straws which are crushed into short sections; in addition, since the feeding hole 163 is opened at the top of the combustion chamber 161, that is, during the process of conveying the crop straws into the combustion chamber 161 by the screw conveyor 23, the flame in the combustion chamber 161 does not ignite the crop straws in the screw conveyor 23; by such arrangement, the feeding device 2 can convey fuel, i.e., the crop straw crushed into short sections, into the combustion chamber 161.

If the crop straws crushed into short sections are not completely crushed, namely, the crop straws are long, the crop straws are wound on the screw conveyor 23, so that the screw conveyor 23 is blocked and the discharge is not smooth, as shown in fig. 1 and 2, the feeding end of the screw conveyor 23 is provided with the cutting device 3, the cutting device 3 comprises a cutting box 31, the cutting box 31 is of a box structure with an open top surface, four corners of the bottom of the cutting box 31 are respectively provided with third support legs 37 which are vertically and oppositely distributed, one end of the cutting box 31 far away from the screw conveyor 23 is opened as a feeding port, the other end of the cutting box 31 is opened as a discharge port lower than the feeding port, the discharge port of the cutting box 31 is positioned above the feeding end of the screw conveyor 23, a cutting knife 32 is arranged in the cutting box 31, one end of the cutting knife 32 close to the feeding port of the cutting box 31 extends to the outside of the cutting box 31 and is fixedly connected with a handle 33, the other end of the cutting knife 32 is hinged with the cutting box 31, specifically, the cropping box 31 is used for containing crop straws; the cutter 32 is used for manually cutting the crop straws, and the crop straws can be directly added into the screw conveyor 23 after being cut; through such a mode of setting, can smash incomplete crop straw once more to can avoid blockking up in screw conveyer 23, guarantee that the ejection of compact is smooth and easy.

Further, as shown in fig. 1 and fig. 2, handles 34 mounted on the outer wall of the blanking box 31 are disposed at four corners of the outer side of the blanking box 31, and the position of the blanking device 3 can be moved conveniently by disposing the handles 34, so that the blanking device 3 can be moved away or moved back conveniently; secondly, third landing leg 37 top all with blank case 31 fixed connection, the equal fixedly connected with horizontal distribution's of third landing leg 37 bottom support 35, all be provided with reinforcing floor 36 between support 35 and the third landing leg 37, can improve blank device 3 overall structure's stability through setting up support 35 and reinforcing floor 36.

The specific structure of the smoking device 4 is as follows: as shown in fig. 1 and 2, the smoke exhaust device 4 includes a smoke exhaust pipe 41, a smoke inlet of the smoke exhaust pipe 41 is located at the top of the combustion chamber 161 and is communicated with the combustion chamber 161, a smoke exhaust end of the smoke exhaust pipe 41 is communicated with a smoke exhaust machine 42, a reinforcing rod 43 is further disposed between the smoke exhaust pipe 41 and the outer wall of the boiler 16, and specifically, the reinforcing rod 43 is used for reinforcing the connection strength between the smoke exhaust pipe 41 and the boiler 16; the smoke extractor 42 is provided with a power supply and a start-stop switch for discharging the smoke generated in the combustion chamber 161 out of the combustion chamber 161 through the smoke extraction pipeline 41, and in addition, when in use, the smoke extractor 42 is communicated with a smoke purification treatment device, so that the smoke can be discharged after being purified and reaching the standard; with this arrangement, the smoke exhaust device 4 can exhaust smoke generated in the combustion chamber 161.

Further, as shown in fig. 1 and 2, the combustion chamber 161 is further communicated with a blowing device 5, the blowing device 5 includes a blower 51 mounted on an outer wall of the combustion furnace 11, the blower 51 is communicated with the combustion chamber 161 through a blowing duct 52, specifically, the blower 51 is provided with a power supply and a start-stop switch, and air can be input into the combustion chamber 161 through the blowing duct 52 to accelerate the air circulation speed in the combustion chamber 161, so that the fuel can be more fully combusted.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, but rather is described in the embodiments and descriptions herein to illustrate the principles of the invention and that various changes and modifications may be made without departing from the spirit and scope of the invention, all of which fall within the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents.

Claims (7)

1. The utility model provides a biomass combustion's power generation facility, includes the feeder that the slope distributes, the lower one end of feeder is the feed end, and higher one end is the discharge end, its characterized in that: the discharge end of the feeding device is provided with a combustion device, the combustion device comprises a combustion furnace which is vertically distributed and is provided with a cavity, four corners of the bottom of the combustion furnace are respectively provided with a second support leg which is vertically and oppositely distributed, a first clapboard and a second clapboard which are horizontally distributed are sequentially arranged in the combustion furnace from top to bottom, the first clapboard divides the combustion furnace into a water storage tank and a boiler, the second clapboard divides the interior of the boiler into a combustion chamber and an ash falling chamber, the top surface of the water storage tank is communicated with a steam pipeline which is vertically distributed, one side of the top of the water storage tank is communicated with a water inlet pipeline of which the water outlet end is positioned at the bottom in the water storage tank, the top of one side of the combustion chamber close to the feeding device is provided with a feed inlet which is communicated with the discharge end of the feeding device, the other side of the combustion chamber is communicated with a smoke exhaust device, the front of the combustion chamber is provided with an ignition port, and the top surface of the second clapboard is an inclined surface, and the middle position of the second clapboard is vertically provided with a plurality of ash falling holes which are distributed at equal intervals along the length direction of the second clapboard, the inner bottom surface of the ash falling chamber is an inclined surface, the lower position of the inner bottom surface of the ash falling chamber is communicated with ash outlet pipelines which are vertically distributed, an ash blocking component and a driving component are sequentially arranged in the ash falling chamber from top to bottom, the ash blocking component comprises ash blocking plates which are connected with the ash dropping chamber in a sliding way in the vertical direction and are distributed horizontally, a plurality of hole plugging plugs which are equal to the number of the dust falling holes and are opposite to the positions of the dust falling holes are vertically arranged on the dust plugging plate, the drive assembly is including being located the drive shaft that blocks up grey board below and level set up, the drive shaft both ends rotate with the ash falling chamber respectively and are connected, and the one end that feeder was kept away from to the drive shaft is passed the ash falling chamber and is rotated and be connected with and install on the outer wall of ash falling chamber and have braking function's driving motor, and the fixed cover in drive shaft both ends is equipped with the eccentric wheel that the symmetry set up.

2. A biomass-fired power plant as claimed in claim 1, characterised in that: first groove structures are formed in the inner walls of the ash falling chambers at the two ends of the ash blocking plates, guide rods which are vertically distributed are fixedly connected in the first groove structures, the two ends of the ash blocking plates are sleeved on the guide rods respectively, and the guide rods above the ash blocking plates are sleeved with reset springs.

3. A biomass-fired power plant as claimed in claim 2, characterised in that: the feeding device comprises a horizontally arranged chassis, universal wheels with a self-locking function are arranged at four corners of the bottom surface of the chassis, a spiral conveyor which is obliquely distributed is arranged on the top surface of the chassis, the lower end of the spiral conveyor is a feeding end, the higher end of the spiral conveyor is a discharging end, the discharging end of the spiral conveyor is communicated with the feeding hole through a discharging pipeline, the feeding end of the spiral conveyor is fixedly connected with the chassis, and two first support legs which are oppositely arranged and obliquely distributed are fixedly connected between the spiral conveyor and the chassis.

4. A biomass-fired power plant as claimed in claim 3, characterised in that: the utility model discloses a material cutting machine, including screw conveyer, blank case, feed end, blank sword, feed end, cut case bottom four corners all is provided with vertical relative distribution's third landing leg, and the one end opening that screw conveyer was kept away from to the blank case is the feed inlet, and the discharge gate that the opening of the other end of blank case is less than the feed inlet, and the discharge gate of blank case is located the top of screw conveyer feed end, is provided with the blank sword in the blank case, the one end that the blank sword is close to the feed inlet of blank case extends to the blank case outside and fixedly connected with handle, and the blank sword other end is articulated with the blank case.

5. A biomass-fired power plant as claimed in claim 4, characterised in that: handles arranged on the outer wall of the material cutting box are arranged at four corners outside the material cutting box, the top ends of the third support legs are fixedly connected with the material cutting box, the bottom ends of the third support legs are fixedly connected with horizontally distributed supports, and reinforcing rib plates are arranged between the supports and the third support legs.

6. A biomass-fired power plant as claimed in claim 1, characterised in that: the smoke exhaust device comprises a smoke exhaust pipeline, the smoke inlet end of the smoke exhaust pipeline is positioned at the top of the combustion chamber and communicated with the inside of the combustion chamber, the smoke outlet end of the smoke exhaust pipeline is communicated with a smoke exhaust machine, and a reinforcing rod is further arranged between the smoke exhaust pipeline and the outer wall of the boiler.

7. The biomass-fired power plant of claim 6, wherein: the combustion chamber is also communicated with a blowing device, the blowing device comprises a blower arranged on the outer wall of the combustion furnace, and the blower is communicated with the combustion chamber through a blowing pipeline.

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