Biomass direct-fired steam boiler

Abstract

The utility model provides a biomass direct combustion type steam boiler, which relates to the technical field of steam boilers, and comprises a boiler body, a residue bin is arranged at the top of the boiler body, a combustion furnace part is arranged at the top of the residue bin, one end of the combustion furnace part is connected with a smoke outlet pipe, one end of the smoke outlet pipe is connected with an induced draft fan, and the other end of the smoke outlet pipe is connected with an air inlet pipe. And a base is arranged at the bottom of the induced draft fan. Flue gas can be conveyed to the purification bin through the conveying pipe, an external water source can be connected through the external pipeline, water is pumped through the water pump and conveyed to the flow dividing pipe from the connecting pipe, then the water is atomized and sprayed out through the atomizing nozzles, and the flue gas in the purification bin is sprayed for dust falling. Flue gas floats upwards and penetrates through the first filter plate to filter away chippings and harmful substances, the flue gas is discharged through the flue gas discharge pipe, and sewage generated by purification and filtration is discharged through the sewage discharge pipe, so that heat in the flue gas is reduced, meanwhile, the flue gas is effectively filtered, and air pollution caused by flue gas discharge is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of steam boilers, in particular to a biomass direct-fired steam boiler. Background Art

[0002] Biomass steam boiler is a type of biomass boiler. It is a steam boiler that uses biomass fuel as raw material. It effectively reduces energy consumption, reduces the emission of carbon dioxide, sulfur dioxide and nitrogen oxides, improves the environment, operates in an environmentally friendly manner, saves fuel, and has variable frequency regulation of the blower and induced draft fan. The boiler runs fully automatically and can automatically adjust the fuel amount according to load changes, with stable steam output.

[0003] Biomass direct-fired steam boilers usually produce a lot of smoke when in use. Existing steam boilers lack purification components and need to filter the smoke through an external bag filter. However, the smoke usually carries a lot of heat. High heat can easily damage the bag filter and affect its service life. Damaged filtering equipment can easily lead to insufficient filtration, causing the exhaust smoke to cause more serious air pollution. Utility Model Content

[0004] The purpose of the utility model is to solve the problem in the prior art that flue gas usually carries a large amount of heat, the high heat easily causes the bag filter to be damaged, affecting its service life, and the damaged filtering equipment easily leads to insufficient filtration, thereby causing the exhausted flue gas to cause more serious air pollution, and a biomass direct-fired steam boiler is proposed.

[0005] In order to achieve the above-mentioned objectives, the utility model adopts the following technical scheme: a biomass direct-fired steam boiler comprises a boiler body, a slag bin is arranged on the top of the boiler body, a combustion furnace is arranged on the top of the slag bin, one end of the combustion furnace is connected with a smoke outlet pipe, one end of the smoke outlet pipe is connected with an induced draft fan, a base is arranged at the bottom of the induced draft fan, a conveying pipe is connected to the top of the induced draft fan, one end of the conveying pipe is connected with a purification bin, a first filter plate is arranged on the inner side of the purification bin, a water pump is arranged on the top of the purification bin, one end of the water pump is connected with an external pipeline, a connecting pipe is connected to the outer side of the water pump, one end of the connecting pipe passes through the purification bin and is connected with a diversion pipe, a plurality of atomizing nozzles are arranged on the outer side of the diversion pipe, one end of the purification bin is connected with a smoke exhaust pipe, and one end of the purification bin is provided with a sewage pipe.

[0006] Preferably, two protective frames are provided on the top of the boiler body, an electric cylinder is provided on the inner side of the protective frame, the output end of the electric cylinder movably passes through the slag bin and is connected to a scraper, a second filter plate is provided on the inner top of the slag bin, and a cover plate is provided at one end of the slag bin.

[0007] Preferably, a blast section is provided on one side of the combustion furnace section, and a feed hopper is provided on the top of the blast section.

[0008] Preferably, a steam boiler section is provided on the top of the combustion furnace section, and a steam outlet pipe is provided on the top of the steam boiler section.

[0009] Preferably, a safety valve is provided on the top of the steam boiler part, and the safety valve is arranged on one side of the steam outlet pipe.

[0010] Preferably, the two protective frames and the electric cylinder are respectively arranged on both sides of the blowing part.

[0011] Compared with the prior art, the advantages and positive effects of the utility model are:

[0012] 1. In the utility model, a water pump, an atomizing nozzle and a first filter plate are provided. When in use, biomass can be burned through the combustion furnace part, smoke can be drawn out from the combustion furnace part through the smoke outlet pipe through the induced draft fan, and the smoke can be transported to the purification chamber through the delivery pipe. An external water source can be connected through an external pipeline, water is pumped by the water pump, and the water is transported from the connecting pipe to the diversion pipe, and then sprayed out through the atomizing nozzle to spray the smoke inside the purification chamber to reduce dust, the smoke floats up and passes through the first filter plate to filter out debris and harmful substances, and is discharged through the smoke exhaust pipe, and the sewage generated by the purification and filtration is discharged through the sewage pipe, thereby reducing the heat in the smoke, and effectively filtering the smoke to prevent the smoke emission from causing air pollution.

[0013] 2. In the utility model, by providing a second filter plate, an electric cylinder and a scraper, when in use, the residue produced by combustion can be made to fall into the residue bin through the second filter plate, the residue bin can be opened by removing the cover plate, the electric cylinder can be fixed and protected by the protective frame, the stable operation of the electric cylinder is maintained, and the service life of the electric cylinder is extended at the same time, and the scraper is pushed by the electric cylinder to slide in the residue bin, the residue inside the residue bin can be scraped off and pushed out of the residue bin, thereby reducing the difficulty of cleaning the biomass combustion residue and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A three-dimensional structural diagram of a biomass direct-fired steam boiler is proposed for the utility model;

[0015] Figure 2 A schematic diagram of one side structure of a biomass direct-fired steam boiler is provided for the utility model;

[0016] Figure 3 The utility model provides a schematic diagram of the atomizing nozzle structure of a biomass direct-fired steam boiler;

[0017] Figure 4 The utility model provides a schematic diagram of a scraper structure of a biomass direct-fired steam boiler.

[0018] Legend: 1. Boiler body; 2. Residue bin; 3. Combustion furnace; 4. Smoke outlet pipe; 5. Induced draft fan; 6. Base; 7. Delivery pipe; 8. Purification chamber; 9. Water pump; 10. External pipeline; 11. Connecting pipe; 12. Diverter pipe; 13. Atomizing nozzle; 14. First filter plate; 15. Drain pipe; 16. Second filter plate; 17. Protective frame; 18. Electric cylinder; 19. Scraper; 20. Cover plate; 21. Steam boiler part; 22. Steam outlet pipe; 23. Safety valve; 24. Feed hopper; 25. Blower part; 26. Smoke outlet pipe. DETAILED DESCRIPTION

[0019] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0020] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure. Example

[0021] like Figure 1-Figure 4 As shown, the utility model provides a technical solution: a biomass direct-fired steam boiler, comprising a boiler body 1, a slag bin 2 is arranged on the top of the boiler body 1, a combustion furnace part 3 is arranged on the top of the slag bin 2, one end of the combustion furnace part 3 is connected to a smoke outlet pipe 4, one end of the smoke outlet pipe 4 is connected to an induced draft fan 5, a base 6 is arranged at the bottom of the induced draft fan 5, a conveying pipe 7 is connected to the top of the induced draft fan 5, one end of the conveying pipe 7 is connected to a purification bin 8, a first filter plate 14 is arranged on the inner side of the purification bin 8, a water pump 9 is arranged on the top of the purification bin 8, one end of the water pump 9 is connected to an external pipeline 10, the outer side of the water pump 9 is connected to a connecting pipe 11, one end of the connecting pipe 11 passes through the purification bin 8 and is connected to a diverter pipe 12, a plurality of atomizing nozzles 13 are arranged on the outer side of the diverter pipe 12, one end of the purification bin 8 is connected to a smoke exhaust pipe 26, and one end of the purification bin 8 is provided with a sewage pipe 15.

[0022] In this embodiment, biomass can be burned through the combustion furnace part 3, and the flue gas can be drawn out from the combustion furnace part 3 through the smoke outlet pipe 4 through the induced draft fan 5. The flue gas can be transported to the purification chamber 8 through the delivery pipe 7. The external water source can be connected through the external pipe 10, and water is pumped through the water pump 9 and transported from the connecting pipe 11 to the diversion pipe 12, and then atomized and sprayed out through the atomizing nozzle 13 to spray the flue gas inside the purification chamber 8 to reduce dust. The flue gas floats up and passes through the first filter plate 14 to filter out debris and harmful substances, and is discharged through the exhaust pipe 26. The sewage generated by the purification and filtration is discharged through the sewage pipe 15, thereby reducing the heat in the flue gas and effectively filtering the flue gas to prevent air pollution caused by flue gas emissions. Example

[0023] like Figure 1-Figure 4 As shown, two protection frames 17 are provided on the top of the boiler body 1, and an electric cylinder 18 is provided on the inner side of the protection frame 17. The output end of the electric cylinder 18 movably passes through the slag bin 2 and is connected to a scraper 19. A second filter plate 16 is provided on the inner top of the slag bin 2, and a cover plate 20 is provided at one end of the slag bin 2. A blast part 25 is provided on one side of the combustion furnace part 3, and a feed hopper 24 is provided on the top of the blast part 25. A steam boiler part 21 is provided on the top of the combustion furnace part 3, and a steam outlet pipe 22 is provided on the top of the steam boiler part 21. A safety valve 23 is provided on the top of the steam boiler part 21, and the safety valve 23 is provided on one side of the steam outlet pipe 22. The two protection frames 17 and the electric cylinder 18 are respectively provided on both sides of the blast part 25.

[0024] In this embodiment, the residue produced by combustion can be made to fall into the residue bin 2 through the second filter plate 16, the residue bin 2 can be opened by removing the cover plate 20, the electric cylinder 18 can be fixed and protected by the protective frame 17, the stable operation of the electric cylinder 18 is maintained, and its service life is extended at the same time, the electric cylinder 18 pushes the scraper 19 to slide in the residue bin 2, the residue inside the residue bin 2 can be scraped off, and the residue bin 2 can be pushed out, thereby reducing the difficulty of cleaning the biomass combustion residue and improving work efficiency, the high-pressure steam can be ejected through the steam outlet pipe 22, the safety of the boiler body 1 can be maintained through the safety valve 23, the biomass can be added into the combustion furnace part 3 through the feed hopper 24, and the combustion efficiency inside the combustion furnace part 3 can be improved through the blast part 25.

[0025] The working principle of this embodiment is as follows: when in use, first add biomass from the feed hopper 24 to the combustion furnace part 3, start the boiler body 1 through the external controller to burn the biomass, then start the induced draft fan 5 to draw the smoke generated by the combustion from the smoke outlet pipe 4, and transport it to the purification bin 8 through the delivery pipe 7, then connect the water source from the external pipeline 10, start the water pump 9 to draw water in, and transport it to the diversion pipe 12 through the connecting pipe 11, and spray it out by the atomizing nozzle 13 to cool and reduce dust on the smoke. At this time, the smoke floats up and passes through the first filter plate 14, filtering out most of the particles and harmful substances, and is discharged from the smoke exhaust pipe 26. Finally, start the electric cylinder 18 to push the scraper 19 to slide in the residue bin 2, and at the same time remove the cover plate 20, so that the scraper 19 shovels the residual value and discharges it from one end of the residue bin 2.

[0026] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A biomass direct-fired steam boiler, comprising a boiler body (1), characterized in that: A slag bin (2) is arranged on the top of the boiler body (1), a combustion furnace (3) is arranged on the top of the slag bin (2), one end of the combustion furnace (3) is connected to a smoke outlet pipe (4), one end of the smoke outlet pipe (4) is connected to an induced draft fan (5), a base (6) is arranged at the bottom of the induced draft fan (5), a conveying pipe (7) is connected to the top of the induced draft fan (5), one end of the conveying pipe (7) is connected to a purification bin (8), and a first filter plate is arranged on the inner side of the purification bin (8). (14), a water pump (9) is arranged on the top of the purification chamber (8), one end of the water pump (9) is connected to an external pipe (10), the outer side of the water pump (9) is connected to a connecting pipe (11), one end of the connecting pipe (11) passes through the purification chamber (8) and is connected to a diversion pipe (12), a plurality of atomizing nozzles (13) are arranged on the outer side of the diversion pipe (12), one end of the purification chamber (8) is connected to a smoke exhaust pipe (26), and one end of the purification chamber (8) is provided with a sewage discharge pipe (15).

2. The biomass direct-fired steam boiler according to claim 1 is characterized in that: Two protective frames (17) are arranged on the top of the boiler body (1), an electric cylinder (18) is arranged on the inner side of the protective frame (17), an output end of the electric cylinder (18) movably passes through the slag bin (2) and is connected to a scraper (19), a second filter plate (16) is arranged on the inner top of the slag bin (2), and a cover plate (20) is arranged on one end of the slag bin (2).

3. The biomass direct-fired steam boiler according to claim 1 is characterized in that: A blast section (25) is provided on one side of the combustion furnace section (3), and a feed hopper (24) is provided on the top of the blast section (25).

4. The biomass direct-fired steam boiler according to claim 1 is characterized in that: A steam boiler section (21) is provided on the top of the combustion furnace section (3), and a steam outlet pipe (22) is provided on the top of the steam boiler section (21).

5. The biomass direct-fired steam boiler according to claim 4 is characterized in that: A safety valve (23) is provided at the top of the steam boiler part (21), and the safety valve (23) is provided on one side of the steam outlet pipe (22).

6. The biomass direct-fired steam boiler according to claim 2, characterized in that: The two protective frames (17) and the electric cylinder (18) are respectively arranged on both sides of the air blowing part (25).

Images