Biomass vaporization hot blast stove

Abstract

The utility model relates to the technical field of heating equipment, in particular to a biomass vaporization hot blast stove which comprises a heating box body, a heating tube nest and a heat supply assembly, the heat supply assembly comprises a feeding bin, an auger, a first fan and a combustion bin, the heating tube nest is arranged in the heating box body, and the combustion bin is arranged on one side of the heating tube nest. A first fan is arranged on the outer side of the heating box body and connected and communicated with a combustion bin, a conveying pipe is arranged above the first fan, the combustion bin is arranged above the conveying pipe, biomass particle fuel is arranged in the combustion bin, a cold air pipe is arranged on one side of the heating box body, and a hot air pipe is arranged on the side, away from the cold air pipe, of the heating box body. A second fan is arranged at one end of the hot air pipe; biomass particles are used as fuel, the heating tube nest is used as a heat exchange medium to heat air so as to produce hot air, and meanwhile, the arrangement structure of the heating tube nest is optimized, so that the air can be in full contact with the heating tube nest for heat exchange.

Description

Technical Field

[0001] This utility model relates to the field of heating equipment technology, and in particular to a biomass gasification hot air furnace. Background Technology

[0002] A hot air furnace is a thermal energy device that heats air to the required temperature and delivers it to various locations where hot air is needed to meet different process requirements. Its working principle is mainly based on generating heat through fuel combustion, and then transferring that heat to the air, thus raising its temperature.

[0003] Existing hot air furnaces use fuels that are not environmentally friendly when heating air, and the air is prone to carrying smoke, causing air pollution. In addition, the contact area and time between the air and the heat source are relatively low, resulting in a long heating time.

[0004] Therefore, to address the above issues, a biomass gasification hot air furnace can be designed, using environmentally friendly biomass pellets as fuel, while simultaneously improving the heat exchange structure. Utility Model Content

[0005] To overcome the problems that most hot blast stoves use fuels that are not environmentally friendly, easily carry flue gas in the air and cause air pollution, and have a low contact area and time between the air and the heat source, resulting in a long heating time.

[0006] The technical solution of this utility model is as follows: a biomass gasification hot air furnace, comprising a heating box, heating tubes, and a heating assembly. The heating assembly includes a feeding bin, an auger, a first blower, and a combustion chamber. Heating tubes are arranged inside the heating box, and a combustion chamber is arranged on one side of the heating tubes. A first blower is arranged on the outside of the heating box, and the first blower is connected to the combustion chamber. A conveying pipe is arranged above the first blower, and a combustion chamber is arranged above the conveying pipe. Biomass pellet fuel is arranged inside the combustion chamber. A cold air pipe is arranged on one side of the heating box, and a hot air pipe is arranged on the side of the heating box away from the cold air pipe. A second blower is arranged at one end of the hot air pipe. A third partition plate is arranged between each heating tube, and the third partition plates are arranged alternately.

[0007] Preferably, a support frame is provided on the outside of the heating box, and an insulation layer is provided in the gaps of the support frame.

[0008] Preferably, the heating chamber is provided with ash removal ports on the upper and lower sides, and a baffle is provided on the inner side of the ash removal port. The baffle is slidably connected to the ash removal port, and an insulation layer is also provided inside the baffle.

[0009] Preferably, a first partition plate is provided at both the upper and lower ends of the heating tube, and a second partition plate is provided between the first partition plate and the inner wall of the heating chamber.

[0010] Preferably, an air inlet chamber, a flow chamber, and an exhaust chamber are formed between the first partition plate and the second partition plate. Each flow chamber is connected to one end of two rows of heating tubes. The air inlet chamber is connected to the bottom of a row of heating tubes near the combustion chamber. The exhaust chamber is connected to the top of a row of heating tubes near the cold air duct. A flue gas duct is provided above the exhaust chamber.

[0011] Preferably, the conveying pipe is equipped with an auger inside, with a drive motor at one end of the auger and a connecting pipe at the bottom of the conveying pipe, which is connected to the first blower and the combustion chamber.

[0012] Preferably, a heating pipe is installed at the end of the combustion chamber away from the connecting pipe, and the heating pipe is connected to the air inlet chamber.

[0013] The beneficial effects of this utility model are:

[0014] By setting up a feeding hopper to store biomass pellet fuel, the conveying pipe guides the fuel in the feeding hopper into the combustion chamber for combustion and heat generation. The first fan supplies air to the combustion chamber, providing oxygen for fuel combustion while sending hot air into the heating tubes to heat the air inside the heating chamber. The setting of multiple sets of heating tubes can increase the contact area between the air and the heating tubes, thereby improving the heat exchange efficiency. The second fan extracts the hot air from inside the heating chamber and allows new cold air to enter the heating chamber for heat exchange. The third partition plate makes the cold air entering the heating chamber meander forward, further increasing the heat exchange efficiency between the cold air and the heating tubes. Attached Figure Description

[0015] Figure 1 The diagram shown is a three-dimensional structural schematic of the biomass gasification hot air furnace of this utility model.

[0016] Figure 2 The diagram shown is a three-dimensional structural schematic of the heating chamber of the biomass gasification hot air furnace of this utility model.

[0017] Figure 3 The diagram shown is a three-dimensional structural schematic of the heating tubes of the biomass gasification hot air furnace of this utility model.

[0018] Figure 4 The diagram shown is a three-dimensional structural schematic of the conveying pipe of the biomass gasification hot air furnace of this utility model.

[0019] Explanation of reference numerals in the attached drawings: 1. Heating chamber; 2. Support frame; 3. Heating tubes; 4. Feeding hopper; 5. Conveying pipe; 6. Screwdriver; 7. First fan; 8. Combustion chamber; 9. Second fan; 101. Ash removal port; 102. Baffle; 103. Cold air duct; 104. Hot air duct; 105. Flue gas duct; 201. Insulation layer; 301. Second partition plate; 302. First partition plate; 303. Air inlet chamber; 304. Air outlet chamber; 305. Circulation chamber; 306. Third partition plate; 501. Connecting pipe; 601. Drive motor; 801. Heating pipe. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Please see Figures 1-4 This utility model provides an embodiment of a biomass gasification hot air furnace, comprising a heating chamber 1, heating tubes 3, and a heating assembly. The heating assembly includes a feeding bin 4, an auger 6, a first blower 7, and a combustion chamber 8. Heating tubes 3 are arranged inside the heating chamber 1, and a combustion chamber 8 is arranged on one side of the heating tubes 3. The first blower 7 is arranged on the outside of the heating chamber 1, and the first blower 7 is connected to the combustion chamber 8. A conveying pipe 5 is arranged above the first blower 7, and the combustion chamber 8 is arranged above the conveying pipe 5. Biomass pellet fuel is arranged inside the combustion chamber 8. A cold air pipe 103 is arranged on one side of the heating chamber 1, and a hot air pipe 104 is arranged on the side of the heating chamber 1 away from the cold air pipe 103. A second blower 9 is arranged at one end of the hot air pipe 104. Each heating tube 3... A third partition plate 306 is provided between them, and the third partition plates 306 are arranged alternately. Biomass pellet fuel is stored by a feeding bin 4. The fuel in the feeding bin 4 is guided into the combustion chamber 8 by the conveying pipe 5 for combustion and heat generation. The first fan 7 supplies air to the combustion chamber 8, providing oxygen for fuel combustion and sending hot air into the heating tube 3 to heat the air inside the heating box 1. The arrangement of multiple sets of heating tubes 3 can increase the contact area of ​​the air heating tubes 3, thereby improving the heat exchange efficiency. The second fan 9 extracts the hot air inside the heating box 1 and allows new cold air to enter the heating box 1 for heat exchange. The third partition plate 306 makes the cold air entering the heating box 1 meander forward, further increasing the heat exchange efficiency between the cold air and the heating tube 3.

[0022] Please see Figure 1In this embodiment, a support frame 2 is provided on the outside of the heating box 1, and a heat insulation layer 201 is provided in the gap of the support frame 2. A dust removal port 101 is provided on the upper and lower sides of the heating box 1, and a baffle 102 is provided on the inner side of the dust removal port 101. The baffle 102 is slidably connected to the dust removal port 101, and a heat insulation layer 201 is also provided inside the baffle 102. The support frame 2 provides installation support for the heating box 1 and the feeding hopper 4, and facilitates the setting of the heat insulation layer 201 to keep the heating box 1 warm. The slidably set baffle 102 makes it easy for the operator to open the dust removal port 101 to clean the dust accumulated inside the heating box 1.

[0023] Please see Figure 2 In this embodiment, a first partition plate 302 is provided at both the upper and lower ends of the heating tube 3, and a second partition plate 301 is provided between the first partition plate 302 and the inner wall of the heating chamber 1. An air inlet chamber 303, a flow chamber 305, and an exhaust chamber 304 are formed between the first partition plate 302 and the second partition plate 301. Each set of flow chambers 305 is interconnected with one end of the two rows of heating tubes 3. The air inlet chamber 303 is interconnected with the bottom of the row of heating tubes 3 near the combustion chamber 8. The exhaust chamber 304 is interconnected with the row of heating tubes 3 near the cold air pipe 103. The tops of pipes 3 are interconnected, and a flue gas pipe 105 is installed above the exhaust chamber 304. The first partition plate 302 isolates the flue gas used for heating from the air to be heated to prevent pollution. The second partition plate 301 divides the flue gas flow channel, so that after the flue gas enters the air inlet chamber 303, it continuously passes through a row of heating tubes 3 and turns back through the flow chamber 305 before entering another row of heating tubes 3. Finally, it enters the exhaust chamber 304 and is discharged from the flue gas pipe 105, so that the flue gas meanders inside the heating box 1, improving the heat utilization rate of the flue gas.

[0024] Please see Figure 4 In this embodiment, an auger 6 is installed inside the conveying pipe 5. A drive motor 601 is installed at one end of the auger 6. A connecting pipe 501 is installed at the bottom of the conveying pipe 5. The connecting pipe 501 is connected to the first blower 7 and the combustion chamber 8. A heating pipe 801 is installed at the end of the combustion chamber 8 away from the connecting pipe 501. The heating pipe 801 is connected to the air inlet chamber 303. The drive motor 601 drives the auger 6 to rotate and convey the fuel in the feeding bin 4. When the fuel moves above the connecting pipe 501, it falls and is blown into the combustion chamber 8 by the first blower 7 for combustion. The heating pipe 801 guides the flue gas generated by combustion into the air inlet chamber 303.

[0025] When the device is in use, the drive motor 601 drives the auger 6 to rotate and transport the fuel in the feeding bin 4. When the fuel moves above the connecting pipe 501, it falls and is blown into the combustion chamber 8 by the first fan 7 for combustion. The heating pipe 801 guides the flue gas generated by combustion into the air inlet chamber 303, so that after entering the air inlet chamber 303, the flue gas continuously passes through a row of heating tubes 3 and turns back through the flow chamber 305 before entering another row of heating tubes 3. Finally, it enters the exhaust chamber 304 and is discharged from the flue gas pipe 105, so that the flue gas meanders inside the heating box 1, improving the heat utilization rate of the flue gas. During this process, the second fan 9 draws out the hot air inside the heating box 1 and allows new cold air to enter the heating box 1 for heat exchange. The third partition plate 306 makes the cold air entering the heating box 1 meander, further increasing the heat exchange efficiency between the cold air and the heating tubes 3.

[0026] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A biomass gasification hot air furnace, comprising a heating chamber (1); characterized in that: It also includes a heating tube (3) and a heating assembly. The heating assembly includes a feeding bin (4), an auger (6), a first fan (7), and a combustion chamber (8). The heating tube (3) is installed inside the heating box (1). The combustion chamber (8) is installed on one side of the heating tube (3). The first fan (7) is installed on the outside of the heating box (1). The first fan (7) is connected to the combustion chamber (8). A conveying pipe (5) is installed above the first fan (7) for conveying... A combustion chamber (8) is provided above the pipe (5), and biomass pellet fuel is provided inside the combustion chamber (8). A cold air pipe (103) is provided on one side of the heating box (1), and a hot air pipe (104) is provided on the side of the heating box (1) away from the cold air pipe (103). A second fan (9) is provided at one end of the hot air pipe (104). A third partition plate (306) is provided between each row of heating tubes (3), and the third partition plates (306) are staggered.

2. The biomass gasification hot air furnace according to claim 1, characterized in that: A support frame (2) is provided on the outside of the heating box (1), and an insulation layer (201) is provided in the gap of the support frame (2).

3. The biomass gasification hot air furnace according to claim 2, characterized in that: The heating chamber (1) has cleaning ports (101) on the upper and lower sides. A baffle (102) is provided inside the cleaning port (101). The baffle (102) is slidably connected to the cleaning port (101). An insulation layer (201) is also provided inside the baffle (102).

4. The biomass gasification hot air furnace according to claim 1, characterized in that: The upper and lower ends of the heating tube (3) are provided with a first partition plate (302), and a second partition plate (301) is provided between the first partition plate (302) and the inner wall of the heating box (1).

5. The biomass gasification hot air furnace according to claim 4, characterized in that: An air inlet chamber (303), a flow chamber (305), and an exhaust chamber (304) are formed between the first partition plate (302) and the second partition plate (301). Each flow chamber (305) is connected to one end of two rows of heating tubes (3). The air inlet chamber (303) is connected to the bottom of a row of heating tubes (3) near the combustion chamber (8). The exhaust chamber (304) is connected to the top of a row of heating tubes (3) near the cold air duct (103). A flue gas duct (105) is provided above the exhaust chamber (304).

6. The biomass gasification hot air furnace according to claim 1, characterized in that: The conveying pipe (5) is equipped with an auger (6), and a drive motor (601) is installed at one end of the auger (6). A connecting pipe (501) is installed at the bottom of the conveying pipe (5), and the connecting pipe (501) is connected to the first blower (7) and the combustion chamber (8).

7. The biomass gasification hot air furnace according to claim 5, characterized in that: A heating pipe (801) is provided at the end of the combustion chamber (8) away from the connecting pipe (501), and the heating pipe (801) is connected to the air inlet chamber (303).

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