Heat cyclic utilization type biomass steam boiler

Abstract

The utility model discloses a heat cyclic utilization type biomass steam boiler which comprises a base, a combustion chamber, a boiler body and a water tank, a scraper blade is movably connected in the combustion chamber, the upper end of the side, away from a feeding port, of the combustion chamber is connected with the water tank through a communicating pipe, and a connecting pipe is fixedly wound on the inner wall of the water tank. And one side of the top end of the water tank fixedly communicates with a second water inlet, an exhaust pipe communicating with the interior of the water tank is fixedly arranged on one side of the second water inlet, and an activated carbon filter screen plate is arranged in the exhaust pipe. The water heater has the advantages that smoke generated by combustion is conveyed into the connecting pipe through the communicating pipe and is coiled in the water tank through the connecting pipe, so that water in the water tank is heated by waste heat in the smoke, the heat utilization rate is improved, finally, the smoke is filtered and purified by the activated carbon filter screen plate and is exhausted from the exhaust pipe, and the environment is protected. And the situation that some unburnt impurities are doped in smoke to affect the environment is prevented.

Description

Technical Field

[0001] This utility model relates to the field of steam boiler technology, specifically a biomass steam boiler with heat recycling. Background Technology

[0002] Biomass refers to various organic matter formed through photosynthesis, including all plants, animals, and microorganisms. Biomass resources are relatively abundant, renewable, and low-pollution, making them one of the important energy sources for humankind. Biomass briquettes are easy to ignite, have low ash content, ignite quickly, and have low production costs, making them widely used in industrial and agricultural production as well as heating. Biomass steam boilers are a type of biomass boiler that uses biomass energy as fuel. They utilize the heat energy released after the biomass fuel is burned to transfer to water in a container, converting it into steam at a certain pressure. They are characterized by low installation costs, safe heating, and environmental friendliness.

[0003] However, some biomass steam boilers produce flue gas during combustion, which is usually directly discharged, resulting in the direct waste of the heat carried in the flue gas. In addition, the discharged flue gas may contain some unburned impurities, which will affect the environment. Therefore, it does not meet the current needs. In response, we have proposed a heat recycling type biomass steam boiler. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a biomass steam boiler with heat recycling. The technical solution of this utility model to solve the above-mentioned technical problem is as follows:

[0005] A biomass steam boiler with heat recycling includes a base, a combustion chamber, a furnace body, and a water tank. A feed inlet is fixedly connected to the upper end of one side of the combustion chamber. A burner connected to the interior of the combustion chamber is located below the feed inlet. A scraper is movably connected inside the combustion chamber. The upper end of the combustion chamber away from the feed inlet is connected to the water tank through a connecting pipe. A connecting pipe is fixedly coiled around the inner wall of the water tank. A second water inlet is fixedly connected to one side of the top of the water tank. An exhaust pipe connected to the interior of the water tank is fixedly located on one side of the second water inlet. An activated carbon filter plate is installed inside the exhaust pipe.

[0006] Preferably, both sides of the inner wall of the combustion chamber are fixedly connected to a fixing rod, the two ends of the scraper are slidably connected to the outer surface of the fixing rod, the front surface of the combustion chamber is connected to a door, and a connecting rod is fixedly connected between one side of the door and one side of the scraper.

[0007] Preferably, one end of the connecting pipe is connected to one end of the communicating pipe, and the end of the connecting pipe away from the communicating pipe is connected to the exhaust pipe.

[0008] Preferably, a slot is provided on one side of the interior of the exhaust pipe, and movable grooves are provided on both sides of the rear end of the slot. A limiting block extending through the slot is movably connected to the interior of each movable groove on both sides. A spring is fixedly connected between the side of the limiting block near the interior of the movable groove and the inner wall of the movable groove.

[0009] Preferably, the activated carbon filter plate is inserted into the slot, and the outer surface of the activated carbon filter plate is in close contact with the inner wall of the slot. Limiting grooves are provided on both sides of the activated carbon filter plate near the rear end, and the end of the limiting block extending through into the slot is inserted into the corresponding limiting groove.

[0010] Preferably, the outer surface of the limiting block away from the spring is inclined, and the inclined surface of the limiting block slides in contact with the outer surface of the limiting groove.

[0011] Preferably, the furnace body is fixedly installed at the top of the combustion chamber, and a water pump is fixedly installed between the combustion chamber and the water tank. The connection end of the water pump is connected to the bottom end of the water tank, and the output end of the water pump is connected to the side of the furnace body near the bottom end through a water pipe.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This utility model involves pouring water into the furnace body and water tank, then feeding fuel into the combustion chamber through the feed inlet, starting the burner to ignite the fuel, and the combustion of biomass fuel heats the water in the furnace body. The flue gas generated by the combustion is transported to the inside of the connecting pipe through the connecting pipe, and then coiled inside the water tank through the connecting pipe, so that the residual heat in the flue gas heats the water inside the water tank, thereby improving the heat utilization rate. Finally, the flue gas is filtered and purified by the activated carbon filter plate and discharged from the exhaust pipe to prevent unburned impurities from affecting the environment. Furthermore, by starting the water pump, the water inside the water tank can be supplied to the inside of the furnace body through the water pipe.

[0014] 2. This utility model allows the scraper to move outward along the outer surface of the fixed rod under the connection of the connecting rod by pulling the box door outward, thereby scraping the fuel that has been burned in the combustion chamber out of the combustion chamber for easy cleaning;

[0015] 3. This utility model pulls one end of the activated carbon filter plate outward. At this time, the inclined surface of the outer surface of the limiting block slides into contact with the outer surface of the limiting groove, compresses the spring, and causes the limiting block to retract into the interior of the movable groove, disengaging from the limiting groove. This releases the limiting of the activated carbon filter plate, making it easy to disassemble and replace the activated carbon filter plate, and preventing it from affecting the filtration and adsorption effect. Attached Figure Description

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a front sectional view of the entire utility model;

[0018] Figure 3 This is a top sectional view of the combustion chamber and water tank of this utility model;

[0019] Figure 4 This utility model Figure 3 A schematic diagram of the structure at point A in the middle.

[0020] In the diagram: 1. Base; 2. Combustion chamber; 201. Feed inlet; 3. Furnace body; 301. First water inlet; 302. Water outlet; 4. Water tank; 401. Second water inlet; 402. Exhaust pipe; 4021. Slot; 4022. Movable slot; 5. Burner; 6. Fixed rod; 7. Scraper; 8. Box door; 9. Connecting rod; 10. Connecting pipe; 11. Connecting pipe; 12. Activated carbon filter plate; 1201. Limiting slot; 13. Limiting block; 14. Spring; 15. Water pump; 16. Water pipe. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] like Figure 1 As shown, one embodiment of this utility model is provided: a biomass steam boiler with heat recycling, including a base 1, a combustion chamber 2, a furnace body 3 and a water tank 4. A feed inlet 201 is fixedly connected to the upper end of one side of the combustion chamber 2. A burner 5 connected to the inside of the combustion chamber 2 is provided below the feed inlet 201. A scraper 7 is movably connected to the inside of the combustion chamber 2. The upper end of the side of the combustion chamber 2 away from the feed inlet 201 is connected to the water tank 4 through a connecting pipe 10. A connecting pipe 11 is fixedly coiled around the inner wall of the water tank 4. A second water inlet 401 is fixedly connected to one side of the top of the water tank 4. An exhaust pipe 402 connected to the inside of the water tank 4 is fixedly provided on one side of the second water inlet 401. An activated carbon filter plate 12 is provided inside the exhaust pipe 402.

[0023] As a preferred technical solution in this embodiment, such as Figure 1 and Figure 2 As shown, the furnace body 3 is fixedly installed at the top of the combustion chamber 2. A water pump 15 is fixedly installed between the combustion chamber 2 and the water tank 4. The connection end of the water pump 15 is connected to the bottom of the water tank 4. The output end of the water pump 15 is connected to the side of the furnace body 3 near the bottom through a water pipe 16. One end of the connecting pipe 11 is connected to one end of the connecting pipe 10. The end of the connecting pipe 11 away from the connecting pipe 10 is connected to the exhaust pipe 402.

[0024] In this embodiment, water is poured into the furnace body 3 and water tank 4, and then fuel is introduced into the combustion chamber 2 through the feed inlet 201. The burner 5 is started to ignite and burn the fuel. The combustion of biomass fuel heats the water in the furnace body 3, and the flue gas generated by combustion is transported to the inside of the connecting pipe 11 through the connecting pipe 10. The flue gas is coiled inside the water tank 4 through the connecting pipe 11, so that the residual heat in the flue gas heats the water inside the water tank 4, thereby improving the heat utilization rate. Finally, the flue gas is filtered and purified by the activated carbon filter plate 12 and discharged from the exhaust pipe 402 to prevent some unburned impurities in the flue gas from affecting the environment. Furthermore, by starting the water pump 15, the water inside the water tank 4 can be supplied to the inside of the furnace body 3 through the water pipe 16.

[0025] As a preferred technical solution in this embodiment, such as Figure 2 and Figure 3 As shown, both sides of the inner wall of the combustion chamber 2 are fixedly connected to a fixing rod 6, and both ends of the scraper 7 are slidably connected to the outer surface of the fixing rod 6. The front surface of the combustion chamber 2 is connected to a door 8, and a connecting rod 9 is fixedly connected between one side of the door 8 and one side of the scraper 7.

[0026] In this embodiment, pulling the box door 8 outward causes the scraper 7, connected by the connecting rod 9, to move outward along the outer surface of the fixed rod 6, thereby scraping the burned fuel out of the combustion chamber 2 for easy cleaning.

[0027] As a preferred technical solution in this embodiment, such as Figure 3 and Figure 4 As shown, a slot 4021 is provided on one side of the interior of the exhaust pipe 402. Movable grooves 4022 are provided on both sides of the rear end of the slot 4021. Limiting blocks 13 extending through the slot 4021 are movably connected to the interior of the movable grooves 4022 on both sides. A spring 14 is fixedly connected between the side of the limiting block 13 near the interior of the movable groove 4022 and the inner wall of the movable groove 4022. The activated carbon filter plate 12 is inserted into the interior of the slot 4021, and the outer surface of the activated carbon filter plate 12 is tightly fitted to the inner wall of the slot 4021. Limiting grooves 1201 are provided on both sides of the activated carbon filter plate 12 near the rear end. One end of the limiting block 13 extending through the slot 4021 is inserted into the corresponding limiting groove 1201. The outer surface of the limiting block 13 away from the spring 14 is set with an incline, and the incline of the limiting block 13 slides in contact with the outer surface of the limiting groove 1201.

[0028] In this embodiment, one end of the activated carbon filter plate 12 is pulled outward. At this time, the inclined surface of the outer surface of the limiting block 13 slides into contact with the outer surface of the limiting groove 1201, compressing the compression spring 14 and causing the limiting block 13 to retract into the interior of the movable groove 4022, disengaging from the limiting groove 1201, thereby releasing the limiting of the activated carbon filter plate 12, making it convenient to disassemble and replace the activated carbon filter plate 12, and preventing the effect of filtration and adsorption from being affected.

[0029] Working principle: Water is poured into the furnace body 3 and water tank 4. Then, fuel is fed into the combustion chamber 2 through the feed inlet 201. The burner 5 is started to ignite and burn the fuel. The combustion of biomass fuel heats the water in the furnace body 3. The flue gas generated by the combustion is transported to the inside of the connecting pipe 11 through the connecting pipe 10. The flue gas is coiled inside the water tank 4 through the connecting pipe 11, so that the residual heat in the flue gas heats the water inside the water tank 4, thereby improving the heat utilization rate. Finally, the flue gas is filtered and purified by the activated carbon filter plate 12 and discharged from the exhaust pipe 402 to prevent some unburned impurities from affecting the environment. By starting the water pump 15, the water in the water tank 4 can be supplied to the inside of the furnace body 3 through the water pipe 16.

[0030] By pulling the box door 8 outward, the scraper 7, connected by the connecting rod 9, moves outward along the outer surface of the fixed rod 6, thereby scraping the burned fuel out of the combustion chamber 2 for easy cleaning.

[0031] By pulling one end of the activated carbon filter plate 12 outward, the inclined surface of the outer surface of the limiting block 13 slides into contact with the outer surface of the limiting groove 1201, compressing the spring 14 and causing the limiting block 13 to retract into the interior of the movable groove 4022, disengaging from the limiting groove 1201, thereby releasing the limiting of the activated carbon filter plate 12, making it convenient to disassemble and replace the activated carbon filter plate 12, and preventing any impact on the filtration and adsorption effect.

[0032] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A biomass steam boiler with heat recycling, comprising a base (1), a combustion chamber (2), a furnace body (3), and a water tank (4), characterized in that: A feed inlet (201) is fixedly connected to the upper end of one side of the combustion chamber (2). A burner (5) connected to the inside of the combustion chamber (2) is provided below the feed inlet (201). A scraper (7) is movably connected inside the combustion chamber (2). The upper end of the side of the combustion chamber (2) away from the feed inlet (201) is connected to the water tank (4) through a connecting pipe (10). A connecting pipe (11) is fixedly coiled around the inner wall of the water tank (4). A second water inlet (401) is fixedly connected to one side of the top of the water tank (4). An exhaust pipe (402) connected to the inside of the water tank (4) is fixedly provided on one side of the second water inlet (401). An activated carbon filter plate (12) is provided inside the exhaust pipe (402). A slot (4021) is provided on one side inside the exhaust pipe (402). Movable grooves (4022) are provided on both sides of the rear end of the slot (4021). A limiting block (13) extending through the slot (4021) is movably connected inside the movable grooves (4022) on both sides. A spring (14) is fixedly connected between the side of the limiting block (13) near the inside of the movable groove (4022) and the inner wall of the movable groove (4022). The activated carbon filter plate (12) is inserted into the inside of the slot (4021), and the outer surface of the activated carbon filter plate (12) is tightly fitted to the inner wall of the slot (4021). A limiting groove (1201) is provided on both sides of the activated carbon filter plate (12) near the rear end. One end of the limiting block (13) extending through the slot (4021) is inserted into the corresponding limiting groove (1201).

2. The biomass steam boiler with heat recycling as described in claim 1, characterized in that: Both sides of the inner wall of the combustion chamber (2) are fixedly connected to a fixing rod (6), and both ends of the scraper (7) are slidably connected to the outer surface of the fixing rod (6). The front surface of the combustion chamber (2) is connected to a door (8), and a connecting rod (9) is fixedly connected between one side of the door (8) and one side of the scraper (7).

3. The biomass steam boiler with heat recycling as described in claim 1, characterized in that: One end of the connecting pipe (11) is connected to one end of the connecting pipe (10), and the end of the connecting pipe (11) away from the connecting pipe (10) is connected to the exhaust pipe (402).

4. A biomass steam boiler with heat recycling as described in claim 1, characterized in that: The outer surface of the limiting block (13) away from the spring (14) is set with an incline, and the incline of the limiting block (13) slides in contact with the outer surface of the limiting groove (1201).

5. A biomass steam boiler with heat recycling as described in claim 1, characterized in that: The furnace body (3) is fixedly installed at the top of the combustion chamber (2). A water pump (15) is fixedly installed between the combustion chamber (2) and the water tank (4). The connection end of the water pump (15) is connected to the bottom end inside the water tank (4), and the output end of the water pump (15) is connected to the side of the furnace body (3) near the bottom end through a water pipe (16).

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