Integrated biomass particle hot blast stove

Abstract

The invention relates to the technical field of hot-blast stove equipment, and discloses an integrated biomass particle hot-blast stove which comprises a hot-blast stove body, the hot-blast stove body comprises a feeding mechanism, a combustion mechanism and a heat exchange mechanism, and the combustion mechanism comprises a combustion chamber and an ash chamber which are arranged in the hot-blast stove body; first ash removal doors are arranged on the portions, right opposite to the combustion chamber and the ash chamber, of the hot blast stove body, and a sieving plate is arranged between the combustion chamber and the ash chamber; the heat exchange mechanism comprises a heat exchanger fixed in the hot blast stove body, and an air inlet pipe and an exhaust pipe are arranged on the heat exchanger. Through the arrangement of the combustion chamber, the ash chamber, the sieving plate, the heat exchanger, the discharging hopper and the material guide pipe, particles are put into the combustion chamber through the discharging hopper and the material guide pipe, the particles are combusted through the combustion chamber, ash generated after combustion can descend into the ash chamber at the bottom through the sieving plate, smoldering and coking of a material layer are avoided, and the combustion efficiency is improved. The problem of coke blocks is solved.

Description

Technical Field

[0001] This invention relates to the field of hot blast stove equipment technology, specifically to an integrated biomass pellet hot blast stove. Background Technology

[0002] A biomass pellet hot air furnace is a general-purpose heat source device that uses biomass pellets, such as wood chips, straw, and rice husks, as fuel. It continuously generates clean, high-temperature hot air through the principle of "fuel combustion heat release + isolated heat exchange". Its core purpose is to provide a stable heat source for drying, heating, industrial production and other scenarios.

[0003] In common biomass pellet hot air furnaces, high-temperature gas flows through the inner channel of the heat exchange tubes while room-temperature air flows through the outer channel, thus heating the room-temperature air through heat exchange. However, because the high-temperature gas contains pollutants such as dust, unburned carbon particles, and CO, these pollutants will remain inside the heat exchange tubes after prolonged use, leading to reduced heat exchange efficiency. Furthermore, the accumulation of ash and slag inside the heat exchange tubes makes subsequent cleaning difficult. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides an integrated biomass pellet hot air furnace, which solves the problem that when using a biomass pellet hot air furnace, the high-temperature gas contains pollutants such as dust, unburned carbon particles, and CO, which remain inside the heat exchange tubes after prolonged use, leading to reduced heat exchange efficiency and difficulties in subsequent cleaning.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solution: an integrated biomass pellet hot air furnace, comprising a hot air furnace body, the hot air furnace body comprising a feeding mechanism, a combustion mechanism, and a heat exchange mechanism, the combustion mechanism comprising a combustion chamber and an ash chamber disposed inside the hot air furnace body, the hot air furnace body being provided with an ash cleaning door at the position facing the combustion chamber and the ash chamber, and a sieve plate being provided between the combustion chamber and the ash chamber; The heat exchange mechanism includes a heat exchanger fixed inside the hot air furnace body. The heat exchanger is provided with an air inlet pipe and an air outlet pipe. The heat exchanger is provided with a number of heat exchange tubes. The number of heat exchange tubes and the heat exchanger, air inlet pipe and air outlet pipe form an S-shaped gas flow channel. The combustion chamber is connected to the side of the heat exchanger opposite to it through a vent pipe. The feeding mechanism includes a hopper installed inside the hot blast stove body, and a feeding port is provided on the hot blast stove body directly opposite the hopper. A guide pipe is installed at the bottom of the hopper, and the end of the guide pipe is installed on the combustion chamber and extends into the combustion chamber. A feeding port is provided on the combustion chamber to cooperate with the guide pipe.

[0006] By adopting the above technical solution, and by setting up a combustion chamber, ash chamber, sieve plate, heat exchanger, hopper, and guide pipe, the particles are fed into the combustion chamber through the hopper and guide pipe. The particles are burned in the combustion chamber. The sieve plate allows the ash produced after combustion to fall into the ash chamber at the bottom, avoiding the problem of smoldering of the material layer and coking. The heat generated by the burning particles is sent to the heat exchanger through the vent pipe, where it exchanges heat with the heat exchange tubes inside the heat exchanger. The heated gas can then be used for drying, effectively isolating ash and dust and ensuring the cleanliness of the hot air.

[0007] Preferably, multiple partition plates are installed inside the heat exchanger between the heat exchange tubes, and the multiple partition plates are staggered to divide the inside of the heat exchanger into an S-shaped gas flow channel.

[0008] Preferably, a cleaning plate is slidably installed on the outer surface of the plurality of heat exchange tubes and the partition plate. A threaded rod and a drive motor are fixedly installed inside the heat exchanger. The end of the threaded rod is fixedly connected to the output shaft of the drive motor. The cleaning plate is threadedly installed on the outer surface of the threaded rod. The heat exchanger is provided with a dust collection trough and a dust removal door that cooperate with the cleaning plate.

[0009] Preferably, two sliding rods are fixedly installed on the side of the cleaning plate. The sliding rods are slidably disposed in the slide rails opened on the heat exchanger shell, and the same moving plate is fixedly installed between the two sliding rods. The moving plate is provided with a vibration component for driving the sieve plate to vibrate and sieve.

[0010] Preferably, the vibration assembly includes a mounting plate fixed to the side of the sieve plate, a connecting rod fixed to the end of the mounting plate near the heat exchanger, and several wedge blocks II fixedly installed on both sides of the connecting rod, with the two wedge blocks II arranged alternately vertically. Two wedge blocks I that cooperate with the wedge blocks II are fixed to the side of the moving plate.

[0011] Preferably, the hot air furnace body is provided with a filtration mechanism, which includes a filter box fixedly installed inside the hot air furnace body, and a filter plate is detachably installed inside the filter box. An exhaust pipe is installed on the heat exchanger at the position of the second gas flow channel. The end of the exhaust pipe penetrates the outer wall of the filter box and extends into the inside of the filter box. A second ash cleaning door is provided on the hot air furnace body facing the filter box, and an exhaust port is opened on the second ash cleaning door.

[0012] Preferably, an exhaust fan is installed inside the hot blast stove body, the exhaust pipe of the exhaust fan passes through the hot blast stove body and extends to the outside of the hot blast stove body, and the air supply pipe of the exhaust fan is connected to the air inlet of the combustion chamber.

[0013] Preferably, the exhaust pipe of the exhaust fan is equipped with a connecting pipe, the connecting pipe penetrates the outer wall of the filter box and extends into the interior of the filter box, and the connecting pipe is equipped with a control valve.

[0014] Preferably, two electric crushing rollers are installed inside the hopper directly below the feeding port, and multiple feeding channels are opened inside the guide pipe, with electric screw feeders installed inside each of the multiple feeding channels.

[0015] Preferably, two guide plates are installed inside the combustion chamber, and the two guide plates are provided with inclined guide surfaces. The outer surface of the sieve plate is in contact with the bottom of the two guide plates.

[0016] Working principle: Pour the particles into the hopper and control the opening of the crushing roller and the screw feeder. The crushing roller is used to crush the particles so that the particle size meets the requirements of the feeding system and the combustion chamber. The crushed particles are then fed into the combustion chamber through the screw feeder. The burner heats the particles inside the combustion chamber. The heat generated by the burning particles is then passed through the vent pipe into the heat exchanger, where it exchanges heat with the heat exchange tubes inside the heat exchanger. This process heats the gas inside the heat exchange tubes, and the heated gas can then be used for drying. The control starts the drive motor, which drives the threaded rod to rotate. While the threaded rod rotates, the sliding rod and the moving plate limit and guide the cleaning plate, which can drive the cleaning plate to move up and down. The up and down movement of the cleaning plate can clean the outer surface of the heat exchange tube and the partition plate, and prevent ash and slag from accumulating on the surface of the heat exchanger. When the moving plate moves up and down following the cleaning plate, the moving plate drives the two wedge blocks to move up and down synchronously. The wedge blocks on both sides move up and down and will contact the wedge blocks on both sides of the connecting rod in turn, which will drive the connecting rod to move laterally. The movement of the connecting rod will drive the sieve plate to move synchronously through the mounting plate, realizing the vibration sieve operation of the sieve plate. After heat exchange, the gas enters the filter box through the outlet pipe, is filtered by the filter plate, and is then discharged. The exhaust fan can replenish the high-temperature flame with secondary air. The heat-resistant cast steel heats up rapidly, forming a high-temperature secondary combustion chamber, which makes the combustion of particles more complete. The hot air inside the filter box can be reused by using the connecting pipe. The hot air is recovered and sent into the combustion chamber for combustion assistance.

[0017] This invention provides an integrated hot air furnace for biomass pellets. It has the following beneficial effects: 1. This invention, by setting up a combustion chamber, ash chamber, sieve plate, heat exchanger, hopper, and guide pipe, allows particles to be fed into the combustion chamber through the hopper and guide pipe. The particles are burned in the combustion chamber, and the sieve plate allows the ash produced after combustion to fall into the bottom ash chamber, avoiding smoldering of the material layer and coking, and the formation of coke lumps. The heat generated by the burning particles is sent to the heat exchanger through the vent pipe, where it exchanges heat with the heat exchange tubes inside the heat exchanger, heating the gas inside the heat exchange tubes. The heated gas can then be used for drying, effectively isolating ash and dust and ensuring the cleanliness of the hot air.

[0018] 2. This invention, by setting up a drive motor, a threaded rod, a sliding rod, and a moving plate, uses the drive motor to drive the threaded rod to rotate. While the threaded rod rotates, the sliding rod and the moving plate limit and guide the cleaning plate, which can drive the cleaning plate to move up and down. The up and down movement of the cleaning plate can clean the outer surface of the heat exchange tube and the partition plate, avoiding the accumulation of ash residue on the surface of the heat exchanger and affecting the heat exchange effect.

[0019] 3. This invention, by setting up an installation plate, a connecting rod, wedge block one, and wedge block two, allows the moving plate to move up and down in sync with the cleaning plate. The moving plate drives the two wedge blocks one to move up and down synchronously. The wedge blocks one on both sides move up and down and will contact the wedge blocks two on both sides of the connecting rod in turn, thereby driving the connecting rod to move laterally reciprocating. The movement of the connecting rod will drive the sieve plate to move synchronously through the installation plate, realizing the vibration sieve operation of the sieve plate and improving the sieve effect of ash and slag.

[0020] 4. This invention, by setting up an exhaust fan and connecting pipe, heats the particles inside the combustion chamber through the burner. The combustion chamber and ash chamber are made of heat-resistant cast steel with densely packed secondary air holes inside. The exhaust fan can replenish the high-temperature flame with secondary air again. The heat-resistant cast steel heats up rapidly, forming a high-temperature secondary combustion chamber, which makes the combustion of particles more complete. The connecting pipe can reuse the hot air inside the filter box, recovering the hot air and sending it into the combustion chamber for combustion assistance.

[0021] 5. This invention utilizes a crushing roller and an electric screw feeder. The crushing roller is used to crush the particles, ensuring that the particle size meets the requirements of the feeding system and combustion chamber. This ensures that the particles have uniform density and are less prone to coking during combustion, thus avoiding blockage and incomplete combustion. The screw feeder conveys and feeds the particles, ensuring feeding efficiency and quantity. Attached Figure Description

[0022] Figure 1 This is a perspective view of the present invention; Figure 2 This is a schematic cross-sectional view of the hot air furnace body of the present invention; Figure 3This is a cross-sectional structural diagram of the feeding mechanism, combustion mechanism, and filtration mechanism of the present invention. Figure 4 This is a schematic cross-sectional view of the feeding mechanism of the present invention; Figure 5 This is a cross-sectional structural diagram of the combustion mechanism and the filtration mechanism of the present invention; Figure 6 This is a schematic cross-sectional view of the combustion mechanism of the present invention; Figure 7 This is a schematic diagram of the heat exchange mechanism of the present invention; Figure 8 This is a schematic cross-sectional view of the heat exchange mechanism of the present invention; Figure 9 This is a schematic diagram of the vibration component structure of the present invention.

[0023] 1. Hot air furnace body; 2. Heat exchange mechanism; 201. Heat exchanger; 202. Heat exchange tube; 203. Cleaning plate; 204. Moving plate; 205. Wedge block one; 206. Sliding rod; 207. Connecting rod; 208. Wedge block two; 209. Drive motor; 210. Threaded rod; 3. Feeding mechanism; 301. Discharge hopper; 302. Crushing roller; 303. Guide pipe; 304. Spiral feed rod; 4. Combustion mechanism; 401. Combustion chamber; 402. Ash chamber; 403. Screen plate; 404. Mounting plate; 405. Guide plate; 5. Filtration mechanism; 501. Filter box; 502. Filter plate; 503. Exhaust fan; 504. Connecting pipe; 505. Air outlet pipe. Detailed Implementation

[0024] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] Please see the appendix Figure 1 -Appendix Figure 3 This invention provides an integrated biomass pellet hot air furnace, including a hot air furnace body 1. The hot air furnace body 1 includes a feeding mechanism 3, a combustion mechanism 4, and a heat exchange mechanism 2. The combustion mechanism 4 includes a combustion chamber 401 and an ash chamber 402 disposed inside the hot air furnace body 1. A cleaning door is provided at the part of the hot air furnace body 1 facing the combustion chamber 401 and the ash chamber 402. A sieve plate 403 is provided between the combustion chamber 401 and the ash chamber 402. The heat exchange mechanism 2 includes a heat exchanger 201 fixed inside the hot air furnace body 1. The heat exchanger 201 is provided with an air inlet pipe and an air outlet pipe, and the heat exchanger 201 is provided with a number of heat exchange tubes 202. The number of heat exchange tubes 202 and the heat exchanger 201, the air inlet pipe and the air outlet pipe form an S-shaped gas flow channel. The combustion chamber is connected to the side of the heat exchanger 201 directly opposite to it through a vent pipe. The feeding mechanism 3 includes a hopper 301 installed inside the hot blast stove body 1, and a feeding port is provided on the hot blast stove body 1 opposite the hopper 301. A guide pipe 303 is installed at the bottom of the hopper 301. The end of the guide pipe 303 is installed on the combustion chamber 401 and extends into the combustion chamber 401. A feeding port is provided on the combustion chamber 401 to cooperate with the guide pipe 303.

[0026] By setting up a combustion chamber 401, an ash chamber 402, a sieve plate 403, a heat exchanger 201, a hopper 301, and a guide pipe 303, the particles are fed into the combustion chamber 401 through the hopper 301 and the guide pipe 303. The particles are burned in the combustion chamber 401. The sieve plate 403 allows the ash produced after combustion to fall into the ash chamber 402 at the bottom, avoiding smoldering of the material layer and coking, and the formation of coke lumps. The heat generated by the burning particles is sent to the heat exchanger 201 through the vent pipe. The heat exchanger 201 exchanges heat with the heat exchange tubes 202 inside the heat exchanger 201, heating the gas inside the heat exchange tubes 202. The heated gas can be used for drying, effectively isolating ash and dust and ensuring the cleanliness of the hot air.

[0027] For details, please refer to the appendix. Figure 8 The heat exchanger 201 has multiple partition plates installed between the heat exchange tubes 202. These partition plates are staggered and divide the interior of the heat exchanger 201 into two S-shaped gas flow channels.

[0028] By setting up partition plates, the hot air can be guided to flow in an S-shaped path between the heat exchangers 201. The hot air can fully contact the multiple heat exchange tubes 202 to exchange heat, thereby improving heat exchange efficiency and avoiding heat waste.

[0029] For details, please refer to the appendix. Figure 7 -Appendix Figure 9Multiple heat exchange tubes 202 and the outer surface of the partition plate are slidably mounted with cleaning plates 203. A threaded rod 210 and a drive motor 209 are fixedly installed inside the heat exchanger 201. The end of the threaded rod 210 is fixedly connected to the output shaft of the drive motor 209. The cleaning plate 203 is threadedly installed on the outer surface of the threaded rod 210. The heat exchanger 201 is provided with a dust collection trough and a dust removal door that cooperate with the cleaning plate 203. Two sliding rods 206 are fixedly installed on the side of the cleaning plate 203. The sliding rods 206 are slidably set in the slide rails opened on the outer shell of the heat exchanger 201. The same moving plate 204 is fixedly installed between the two sliding rods 206. The moving plate 204 is provided with a vibration component for driving the sieve plate 403 to vibrate and sieve.

[0030] By setting up a drive motor 209, a threaded rod 210, a sliding rod 206, and a moving plate 204, the drive motor 209 drives the threaded rod 210 to rotate. While the threaded rod 210 rotates, the sliding rod 206 and the moving plate 204 limit and guide the cleaning plate 203, which can drive the cleaning plate 203 to move up and down. The up and down movement of the cleaning plate 203 can clean the outer surface of the heat exchange tube 202 and the partition plate, preventing ash and slag from accumulating on the surface of the heat exchanger 201 and affecting the heat exchange effect.

[0031] For details, please refer to the appendix. Figure 7 -Appendix Figure 9 The vibration assembly includes a mounting plate 404 fixed to the side of the sieve plate 403. A connecting rod 207 is fixed to the end of the mounting plate 404 near the heat exchanger 201. Several wedge blocks 208 are fixedly installed on both sides of the connecting rod 207, and the two wedge blocks 208 are staggered vertically. Two wedge blocks 205 that cooperate with the wedge blocks 208 are fixed to the side of the moving plate 204.

[0032] By setting up the mounting plate 404, connecting rod 207, wedge block 1 205 and wedge block 208, when the moving plate 204 moves up and down following the cleaning plate 203, the moving plate 204 drives the two wedge blocks 1 205 to move up and down synchronously. The wedge blocks 1 205 on both sides move up and down and will come into contact with the wedge blocks 208 on both sides of the connecting rod 207 in turn, which will drive the connecting rod 207 to move laterally reciprocating. The movement of the connecting rod 207 will drive the sieve plate 403 to move synchronously through the mounting plate 404, realizing the vibration sieve operation of the sieve plate 403 and improving the sieve effect of ash and slag.

[0033] For details, please refer to the appendix. Figure 5The hot air furnace body 1 is equipped with a filter mechanism 5. The filter mechanism 5 includes a filter box 501 fixedly installed inside the hot air furnace body 1, and a filter plate 502 is detachably installed inside the filter box 501. An exhaust pipe 505 is installed on the heat exchanger 201 at the position of the gas flow channel 2. The end of the exhaust pipe 505 penetrates the outer wall of the filter box 501 and extends into the filter box 501. The hot air furnace body 1 is provided with a second ash cleaning door facing the filter box 501, and an exhaust port is opened on the second ash cleaning door.

[0034] By setting up a filter box 501, a filter plate 502, and an exhaust pipe 505, the gas after heat exchange enters the filter box 501 through the exhaust pipe 505, is filtered by the filter plate 502, and is then discharged, thus preventing the flue gas from being directly discharged outside the working environment and causing pollution to the working environment.

[0035] For details, please refer to the appendix. Figure 5 and attached Figure 6 A blower 503 is installed inside the hot blast furnace body 1. The exhaust pipe of the blower 503 passes through the hot blast furnace body 1 and extends to the outside of the hot blast furnace body 1. The air supply pipe of the blower 503 is connected to the air inlet of the combustion chamber 401. A connecting pipe 504 is installed on the exhaust pipe of the blower 503. The connecting pipe 504 passes through the outer wall of the filter box 501 and extends to the inside of the filter box 501. A control valve is provided on the connecting pipe 504.

[0036] By setting up an exhaust fan 503 and a connecting pipe 504, the particles inside the combustion chamber 401 are heated by the burner. The combustion chamber 401 and the ash chamber 402 are made of heat-resistant cast steel with densely packed secondary air holes inside. The exhaust fan 503 can replenish the high-temperature flame with secondary air again. The heat-resistant cast steel heats up rapidly, forming a high-temperature secondary combustion chamber, which makes the combustion of particles more complete. The connecting pipe 504 can reuse the hot air inside the filter box 501, recovering the hot air and sending it into the combustion chamber 401 for combustion assistance.

[0037] For details, please refer to the appendix. Figure 3 and attached Figure 4 Inside the hopper 301, two electric crushing rollers 302 are installed directly below the feeding port, and multiple feeding channels are opened inside the guide pipe 303. Electric screw feeders 304 are installed inside the multiple feeding channels directly opposite the guide pipe 303.

[0038] By setting up a crushing roller 302 and an electric screw feeder 304, the crushing roller 302 is used to crush the particles so that the particle size meets the requirements of the feeding system and the combustion chamber 401, ensuring that the particle forming density is uniform and that it is not easy to coke during combustion, avoiding blockage and incomplete combustion. The screw feeder 304 conveys and feeds the particles, ensuring feeding efficiency and feeding amount.

[0039] For details, please refer to the appendix. Figure 5 and attached Figure 6 The combustion chamber 401 is equipped with two guide plates 405. The two guide plates 405 are provided with inclined guide surfaces. The outer surface of the sieve plate 403 is in contact with the bottom of the two guide plates 405.

[0040] Working principle: Pour the particles into the hopper 301, and control the opening of the crushing roller 302 and the screw feeder 304. The crushing roller 302 is used to crush the particles so that the particle size meets the requirements of the feeding system and the combustion chamber 401. The crushed particles are fed into the combustion chamber 401 through the screw feeder 304. The burner heats the particles inside the combustion chamber 401. The particles generate heat after combustion. The hot gas enters the heat exchanger 201 through the vent pipe and exchanges heat with the heat exchange tube 202 inside the heat exchanger 201. The gas inside the heat exchange tube 202 is heated and can be used for drying. The drive motor 209 is turned on and driven to rotate the threaded rod 210. While the threaded rod 210 is rotating, the sliding rod 206 and the moving plate 204 limit and guide the cleaning plate 203, which can drive the cleaning plate 203 to move up and down. The up and down movement of the cleaning plate 203 can clean the outer surface of the heat exchange tube 202 and the partition plate, and prevent ash and slag from accumulating on the surface of the heat exchanger 201. When the moving plate 204 moves up and down following the cleaning plate 203, the moving plate 204 drives the two wedge blocks 205 to move up and down synchronously. The wedge blocks 205 on both sides move up and down and will contact the wedge blocks 208 on both sides of the connecting rod 207 in turn, which will drive the connecting rod 207 to move laterally and reciprocate. The movement of the connecting rod 207 will drive the sieve plate 403 to move synchronously through the mounting plate 404, so as to realize the vibration sieve operation of the sieve plate 403. After heat exchange, the gas enters the filter box 501 through the outlet pipe 505, is filtered by the filter plate 502, and is discharged. The exhaust fan 503 can replenish the high-temperature flame with secondary air. The heat-resistant cast steel heats up rapidly, forming a high-temperature secondary combustion chamber, which makes the combustion of particles more complete. The hot air inside the filter box 501 can be reused through the connecting pipe 504. The hot air is recovered and sent into the combustion chamber 401 for combustion assistance.

[0041] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An integrated biomass pellet hot air furnace, characterized in that, The hot blast stove body (1) includes a feeding mechanism (3), a combustion mechanism (4), and a heat exchange mechanism (2). The combustion mechanism (4) includes a combustion chamber (401) and an ash chamber (402) located inside the hot blast stove body (1). The hot blast stove body (1) is provided with an ash cleaning door at the part facing the combustion chamber (401) and the ash chamber (402). A sieve plate (403) is provided between the combustion chamber (401) and the ash chamber (402). The heat exchange mechanism (2) includes a heat exchanger (201) fixed inside the hot air furnace body (1). The heat exchanger (201) is provided with an air inlet pipe and an air outlet pipe. The heat exchanger (201) is provided with a number of heat exchange tubes (202). The number of heat exchange tubes (202) forms an S-shaped gas flow channel with the heat exchanger (201), the air inlet pipe and the air outlet pipe. The combustion chamber (401) is connected to the side of the heat exchanger (201) facing each other through a vent pipe. The feeding mechanism (3) includes a feeding hopper (301) installed inside the hot air furnace body (1), and a feeding port is provided on the hot air furnace body (1) directly opposite the feeding hopper (301). A guide pipe (303) is installed at the bottom of the feeding hopper (301). The end of the guide pipe (303) is installed on the combustion chamber (401) and the end of the guide pipe (303) extends into the combustion chamber (401). A feeding port is provided on the combustion chamber (401) to cooperate with the guide pipe (303).

2. The integrated biomass pellet hot air furnace according to claim 1, characterized in that: The heat exchanger (201) has multiple partition plates installed between the heat exchange tubes (202). The partition plates are staggered and divide the interior of the heat exchanger (201) into two S-shaped gas flow channels.

3. The integrated biomass pellet hot air furnace according to claim 2, characterized in that: A cleaning plate (203) is slidably installed on the outer surface of multiple heat exchange tubes (202) and partition plates. A threaded rod (210) and a drive motor (209) are fixedly installed inside the heat exchanger (201). The end of the threaded rod (210) is fixedly connected to the output shaft of the drive motor (209). The cleaning plate (203) is threadedly installed on the outer surface of the threaded rod (210). The heat exchanger (201) is provided with a dust collection trough and a dust removal door that cooperate with the cleaning plate (203).

4. The integrated biomass pellet hot air furnace according to claim 3, characterized in that: Two sliding rods (206) are fixedly installed on the side of the cleaning plate (203). The sliding rods (206) are slidably disposed in the slide rails opened on the outer shell of the heat exchanger (201). A moving plate (204) is fixedly installed between the two sliding rods (206). The moving plate (204) is provided with a vibration component for driving the sieve plate (403) to vibrate and sieve.

5. The integrated biomass pellet hot air furnace according to claim 4, characterized in that: The vibration assembly includes a mounting plate (404) fixed to the side of the sieve plate (403). A connecting rod (207) is fixed to the end of the mounting plate (404) near the heat exchanger (201). Several wedge blocks (208) are fixedly installed on both sides of the connecting rod (207), and the two wedge blocks (208) are staggered vertically. Two wedge blocks (205) are fixed to the side of the moving plate (204) to cooperate with the wedge blocks (208).

6. The integrated biomass pellet hot air furnace according to claim 1, characterized in that: The hot air furnace body (1) is provided with a filter mechanism (5). The filter mechanism (5) includes a filter box (501) fixedly installed inside the hot air furnace body (1). A filter plate (502) is detachably installed inside the filter box (501). An exhaust pipe (505) is installed on the heat exchanger (201) at the position of the second gas flow channel. The end of the exhaust pipe (505) penetrates the outer wall of the filter box (501) and extends into the interior of the filter box (501). The hot air furnace body (1) is provided with a second ash removal door facing the filter box (501), and an exhaust port is opened on the second ash removal door.

7. The integrated biomass pellet hot air furnace according to claim 6, characterized in that: The hot blast furnace body (1) is equipped with an exhaust fan (503). The exhaust pipe of the exhaust fan (503) passes through the hot blast furnace body (1) and extends to the outside of the hot blast furnace body (1). The air supply pipe of the exhaust fan (503) is connected to the air inlet of the combustion chamber (401).

8. The integrated biomass pellet hot air furnace according to claim 7, characterized in that: The exhaust pipe of the exhaust fan (503) is equipped with a connecting pipe (504), which penetrates the outer wall of the filter box (501) and extends into the interior of the filter box (501), and a control valve is provided on the connecting pipe (504).

9. The integrated biomass pellet hot air furnace according to claim 1, characterized in that: The hopper (301) has two electric crushing rollers (302) installed inside the feed inlet and below the feed port. The guide pipe (303) has multiple feeding channels inside, and the guide pipe (303) has an electric screw feeder (304) installed inside each of the multiple feeding channels.

10. The integrated biomass pellet hot air furnace according to claim 1, characterized in that: The combustion chamber (401) is equipped with two guide plates (405), and the two guide plates (405) are provided with inclined guide surfaces. The outer surface of the sieve plate (403) is in contact with the bottom of the two guide plates (405).

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