A new type of coal-fired boiler system based on a multi-channel through-flow pulverized coal burner

Abstract

The present invention discloses a novel coal-fired boiler system based on a multi-channel through-flow pulverized coal burner, which relates to the technical field of coal-fired boilers. The system includes a boiler tank body, and a pulverizing box body and a combustion chamber are fixedly connected to the bottom of the boiler tank body. A premixing box body is arranged between the pulverizing box body and the premixing box body. An air pump is fixedly connected to the top of the premixing box body, and an air inlet pipe is fixedly connected to the bottom of the air pump. In this novel coal-fired boiler system based on a multi-channel through-flow pulverized coal burner, through the cooperative setting of the pulverizing box body, the premixing box body and the combustion chamber, the pulverizing box body first pulverizes the coal into pulverized coal, and the pulverized coal and air are fully mixed in the premixing box body, and the combustion chamber ignites the premixed combustibles, increasing the utilization efficiency of the coal. Through the cooperative setting of the heating box body, the water inlet end water distribution plate, the water outlet end water distribution plate and the middle partition plate, it can ensure that the cold water in the boiler tank body is fully heated.

Description

Technical Field

[0001] The present invention relates to the technical field of coal-fired boilers, and specifically to a new type of coal-fired boiler system based on a multi-channel through-flow pulverized coal burner. Background Art

[0002] In modern life, coal-fired boilers are a relatively common type of boiler, mainly using coal as fuel for producing boiling water, hot water or steam, etc. Most existing coal-fired boilers use lump coal as fuel, which makes it difficult for the coal to be fully burned, resulting in low utilization rate of the coal. Moreover, most existing boilers use a direct heating method of the tank to heat the water in the tank. However, since the thermal conductivity of a liquid is inversely proportional to its temperature, that is, it will decrease as the temperature of the water increases. Therefore, after the water at the heated end at the bottom of the boiler is heated, it is difficult to quickly transfer the temperature to the water in other parts, resulting in low heating efficiency.

[0003] In Chinese Patent Application No.: CN201921048386.8, a new type of coal-fired boiler is disclosed, including a boiler. One end of the bottom of the boiler is connected with a screw conveyor pipe. Above the screw conveyor pipe is connected with a crushing box. The top of the crushing box is connected with a feeding hopper. And symmetrically arranged on both sides below the feeding hopper inside the crushing box are extrusion rollers. Below the screw conveyor pipe on the outer wall of the bottom of the boiler is connected with a wind hood. One end of the wind hood is connected to the air outlet end of a first fan through a gas pipe. For this new type of coal-fired boiler, the crushing box is used to crush the coal, improving the utilization efficiency of the coal. However, the pulverized coal after crushing is not premixed with gas, and there is a bottleneck in the combustion efficiency. In addition, this device does not have an independent water circulation mechanism.

[0004] Therefore, it is very necessary to propose a new type of coal-fired boiler system based on a multi-channel through-flow pulverized coal burner to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a new type of coal-fired boiler system based on a multi-channel through-flow pulverized coal burner to solve the problems of low efficient utilization of coal and low heating efficiency in the existing coal-fired boilers mentioned in the above background art.

[0006] To achieve the above object, the present invention is realized by the following technical solutions: A new type of coal-fired boiler system based on a multi-channel through-flow pulverized coal burner, including a boiler tank body. The bottom of the boiler tank body is fixedly connected with a pulverizing box body and a combustion chamber. There is a premixing box body between the pulverizing box body and the premixing box body. The top of the premixing box body is fixedly connected with an air pump. The bottom of the air pump is fixedly connected with an intake pipe. One side of the pulverizing box body close to the premixing box body is fixedly connected with a pulverized coal outlet. The middle part of the inner cavity of the premixing box body is fixedly connected with a premixing partition plate. The middle part of the premixing partition plate is fixedly connected with a plurality of premixing through-flow pipes. One end of each of the plurality of premixing through-flow pipes away from the premixing partition plate penetrates through the premixing box body and extends into the combustion chamber. The bottom of the combustion chamber is fixedly connected with an igniter. The top of the combustion chamber is fixedly connected with a heating box body. The inside of the heating box body is fixedly connected with a water inlet end water distribution plate, a water outlet end water distribution plate and a plurality of middle partition plates. A plurality of water inlet end water distribution holes are opened in the middle part of the water inlet end water distribution plate. A plurality of water outlet end water distribution holes are opened in the middle part of the water outlet end water distribution plate. There is a sealed box body and a hot water outlet pipe inside the boiler tank body. The bottom of the hot water outlet pipe penetrates through the boiler tank body and extends into the heating box body. A heat-resistant water pump is fixedly connected inside the sealed box body. The top of the sealed box body is fixedly connected with a water pump inlet pipe. The bottom of the water pump inlet pipe penetrates through the heat-resistant water pump, the water pump inlet pipe and the boiler tank body and extends into the heating box body. One side of the combustion chamber away from the premixing box body is fixedly connected with a smoke exhaust pipe.

[0007] Preferably, the pulverizing box body is located on one side of the bottom of the boiler tank body, the combustion chamber is located on the other side of the bottom of the boiler tank body. The top of the pulverizing box body is provided with a feed inlet, and the feed inlet is located on the side of the top of the pulverizing box body away from the boiler tank body.

[0008] Preferably, the middle part of one side of the boiler tank body close to the pulverizing box body is fixedly connected with a tank body inlet pipe. One end of the tank body inlet pipe close to the boiler tank body extends into the boiler tank body. The middle part of one side of the boiler tank body close to the combustion chamber is fixedly connected with a tank body outlet pipe. One end of the tank body outlet pipe close to the boiler tank body extends into the boiler tank body.

[0009] Preferably, one end of the premixing box body is fixedly connected with the pulverizing box body, the other end of the premixing box body is fixedly connected with the combustion chamber, and one side of the air pump is fixedly connected with the pulverizing box body.

[0010] Preferably, one end of the pulverized coal outlet away from the pulverizing box body extends into the premixing box body. The bottom of the intake pipe penetrates through the premixing box body and is fixedly connected with the premixing box body. Both the intake pipe and the pulverized coal outlet are located between the pulverizing box body and the premixing partition plate.

[0011] Preferably, the multiple pre-mixing flow-through pipes are distributed in an annular array. One end of each of the multiple pre-mixing flow-through pipes close to the pre-mixing partition plate penetrates through the pre-mixing partition plate. One end of each of the multiple pre-mixing flow-through pipes close to the pre-mixing partition plate is located between the pulverizing box body and the pre-mixing partition plate. The other end of each of the multiple pre-mixing flow-through pipes away from the pre-mixing partition plate is fixedly connected to the combustion chamber.

[0012] Preferably, the water outlet end water distribution plate is located on one side of the inner cavity of the heating box body, the water inlet end water distribution plate is located on the other side of the inner cavity of the heating box body. The multiple middle partition plates are all located between the water outlet end water distribution plate and the water inlet end water distribution plate. Both ends of the multiple middle partition plates are fixedly connected to the water outlet end water distribution plate and the water inlet end water distribution plate respectively.

[0013] Preferably, the multiple middle partition plates, the water inlet end water distribution holes and the water outlet end water distribution holes are all linearly distributed at equal intervals, and the multiple middle partition plates, the water inlet end water distribution holes and the water outlet end water distribution holes are staggered.

[0014] Preferably, the bottom of the hot water outlet pipe is located between the inner wall of the heating box body and the water outlet end water distribution plate, the bottom of the hot water outlet pipe is fixedly connected to the heating box body. The bottom of the water pump inlet pipe is located between the inner wall of the heating box body and the water inlet end water distribution plate, the bottom of the water pump inlet pipe is fixedly connected to the heating box body. The top of the hot water outlet pipe is higher than the top of the water pump inlet pipe.

[0015] Preferably, the bottom of the smoke exhaust pipe extends into the combustion chamber and is fixedly connected to the combustion chamber. The middle part of the smoke exhaust pipe penetrates through the boiler tank body and is fixedly connected to the boiler tank body. The top of the smoke exhaust pipe is located above the boiler tank body.

[0016] Compared with the prior art, the present invention provides a new type of coal-fired boiler system based on a multi-channel flow-through pulverized coal burner, which has the following beneficial effects:

[0017] 1. For the new type of coal-fired boiler system based on the multi-channel flow-through pulverized coal burner, through the combined setting of the pulverizing box body, the pre-mixing box body and the combustion chamber, the pulverizing box body first pulverizes the coal into pulverized coal. The pulverized coal and air are fully mixed in the pre-mixing box body, and the combustion chamber ignites the pre-mixed combustibles, increasing the utilization efficiency of the coal and avoiding the situation of incomplete combustion of the lumpy coal, and solving the problem that the existing coal-fired boilers are difficult to efficiently utilize coal.

[0018] 2. For the new type of coal-fired boiler system based on the multi-channel flow-through pulverized coal burner, through the combined setting of the heating box body, the water inlet end water distribution plate, the water outlet end water distribution plate and the middle partition plates, it can ensure that the cold water in the boiler tank body is fully heated. Through the setting of the heat-resistant water pump, it can drive the water in the boiler tank body, so that the water in the boiler tank body is fully heated, avoiding the water at the heating end in the boiler tank body from preventing the upper layer of water from being heated, and solving the problem of low heating efficiency of the existing coal-fired boilers.

[0019] 3. The new coal-fired boiler system based on the multi-channel through-flow pulverized coal burner, through the setting of the exhaust pipe, the middle part of the exhaust pipe is located inside the boiler tank, which can further heat the moisture inside the boiler tank and effectively utilize the waste heat of the combustion exhaust gas in the combustion chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is the front view schematic diagram of the structure of the present invention;

[0021] Figure 2 is the front view sectional schematic diagram of the boiler tank structure of the present invention;

[0022] Figure 3 is the front view sectional schematic diagram of the premixing box structure of the present invention;

[0023] Figure 4 is the top view sectional schematic diagram of the heating box structure of the present invention.

[0024] In the figure: 1. Boiler tank; 11. Tank water inlet pipe; 12. Tank water outlet pipe; 13. Sealed box; 14. Heat-resistant water pump; 15. Water pump inlet pipe; 16. Hot water outlet pipe; 2. Crushing box; 21. Feed inlet; 22. Pulverized coal outlet; 3. Premixing box; 31. Air pump; 32. Intake pipe; 33. Premixing partition board; 34. Premixing through-flow pipe; 4. Combustion chamber; 41. Igniter; 42. Exhaust pipe; 5. Heating box; 51. Water inlet end water distribution board; 52. Water inlet end water distribution hole; 53. Water outlet end water distribution board; 54. Water outlet end water distribution hole; 55. Middle partition board. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0026] Please refer to Figures 1-4As shown in the figure, a new type of coal-fired boiler system based on a multi-channel through-flow pulverized coal burner includes a boiler tank body 1. A pulverizing box body 2 and a combustion chamber 4 are fixedly connected to the bottom of the boiler tank body 1. The pulverizing box body 2 is located on one side of the bottom of the boiler tank body 1, and the combustion chamber 4 is located on the other side of the bottom of the boiler tank body 1. A feed inlet 21 is opened at the top of the pulverizing box body 2, and the feed inlet 21 is located on the side of the top of the pulverizing box body 2 away from the boiler tank body 1. In the middle of one side of the boiler tank body 1 close to the pulverizing box body 2, a tank body water inlet pipe 11 is fixedly connected. One end of the tank body water inlet pipe 11 close to the boiler tank body 1 extends into the boiler tank body 1. In the middle of one side of the boiler tank body 1 close to the combustion chamber 4, a tank body water outlet pipe 12 is fixedly connected. One end of the tank body water outlet pipe 12 close to the boiler tank body 1 extends into the boiler tank body 1. A premixing box body 3 is provided between the pulverizing box body 2 and the premixing box body 3. An air pump 31 is fixedly connected to the top of the premixing box body 3. An air inlet pipe 32 is fixedly connected to the bottom of the air pump 31. A pulverized coal outlet 22 is fixedly connected to one side of the pulverizing box body 2 close to the premixing box body 3. One end of the premixing box body 3 is fixedly connected to the pulverizing box body 2, and the other end of the premixing box body 3 is fixedly connected to the combustion chamber 4. One side of the air pump 31 is fixedly connected to the pulverizing box body 2. A premixing partition plate 33 is fixedly connected to the middle of the inner cavity of the premixing box body 3. One end of the pulverized coal outlet 22 away from the pulverizing box body 2 extends into the premixing box body 3. The bottom of the air inlet pipe 32 penetrates through the premixing box body 3 and is fixedly connected to the premixing box body 3. Both the air inlet pipe 32 and the pulverized coal outlet 22 are located between the pulverizing box body 2 and the premixing partition plate 33. A plurality of premixing through-flow pipes 34 are fixedly connected to the middle of the premixing partition plate 33. One end of each of the plurality of premixing through-flow pipes 34 away from the premixing partition plate 33 penetrates through the premixing box body 3 and extends into the combustion chamber 4. The plurality of premixing through-flow pipes 34 are arranged in a circular array. One end of each of the plurality of premixing through-flow pipes 34 close to the premixing partition plate 33 penetrates through the premixing partition plate 33. One end of each of the plurality of premixing through-flow pipes 34 close to the premixing partition plate 33 is located between the pulverizing box body 2 and the premixing partition plate 33. One end of each of the plurality of premixing through-flow pipes 34 away from the premixing partition plate 33 is fixedly connected to the combustion chamber 4. An igniter 41 is fixedly connected to the bottom of the combustion chamber 4. A heating box body 5 is fixedly connected to the top of the combustion chamber 4. Through the combined setting of the pulverizing box body 2, the premixing box body 3 and the combustion chamber 4, the pulverizing box body 2 first pulverizes the coal into pulverized coal, the pulverized coal and air are fully mixed in the premixing box body 3, and the combustion chamber 4 ignites the premixed combustibles, increasing the utilization efficiency of the coal and avoiding the situation of incomplete combustion of the lumpy coal, solving the problem that the existing coal-fired boilers are difficult to efficiently utilize coal. An inlet end water distribution plate 51, an outlet end water distribution plate 53 and a plurality of middle partition plates 55 are fixedly connected to the inside of the heating box body 5. A plurality of inlet end water distribution holes 52 are opened in the middle of the inlet end water distribution plate 51. A plurality of outlet end water distribution holes 54 are opened in the middle of the outlet end water distribution plate 53. The outlet end water distribution plate 53 is located on one side of the inner cavity of the heating box body 5, and the inlet end water distribution plate 51 is located on the other side of the inner cavity of the heating box body 5. The plurality of middle partition plates 55 are all located between the outlet end water distribution plate 53 and the inlet end water distribution plate 51.Both ends of multiple middle partition plates 55 are fixedly connected to the water outlet end water distribution plate 53 and the water inlet end water distribution plate 51 respectively. The multiple middle partition plates 55, the water inlet end water distribution holes 52 and the water outlet end water distribution holes 54 are all linearly distributed at equal intervals, and the multiple middle partition plates 55, the water inlet end water distribution holes 52 and the water outlet end water distribution holes 54 are staggered. Inside the boiler tank body 1, there is a sealed box body 13 and a hot water outlet pipe 16. The bottom of the hot water outlet pipe 16 penetrates through the boiler tank body 1 and extends into the heating box body 5. Inside the sealed box body 13, there is a heat-resistant water pump 14 fixedly connected. The top of the sealed box body 13 is fixedly connected with a water pump inlet pipe 15. The bottom of the water pump inlet pipe 15 penetrates through the heat-resistant water pump 14, the water pump inlet pipe 15 and the boiler tank body 1 and extends into the heating box body 5. The bottom of the hot water outlet pipe 16 is located between the inner wall of the heating box body 5 and the water outlet end water distribution plate 53, and the bottom of the hot water outlet pipe 16 is fixedly connected to the heating box body 5. The bottom of the water pump inlet pipe 15 is located between the inner wall of the heating box body 5 and the water inlet end water distribution plate 51, and the bottom of the water pump inlet pipe 15 is fixedly connected to the heating box body 5. The top of the hot water outlet pipe 16 is higher than the top of the water pump inlet pipe 15. Through the cooperative setting of the heating box body 5, the water inlet end water distribution plate 51, the water outlet end water distribution plate 53 and the middle partition plates 55, it can ensure that the cold water in the boiler tank body 1 is fully heated. Through the setting of the heat-resistant water pump 14, it can drive the water in the boiler tank body 1, so that the water in the boiler tank body 1 is fully heated, avoiding the water at the heating end in the boiler tank body 1 from preventing the upper layer of water from being heated, and solving the problem of low heating efficiency of the existing coal-fired boilers. On one side of the combustion chamber 4 far away from the premixing box body 3, there is a smoke exhaust pipe 42 fixedly connected. The bottom of the smoke exhaust pipe 42 extends into the combustion chamber 4 and is fixedly connected to the combustion chamber 4. The middle part of the smoke exhaust pipe 42 penetrates through the boiler tank body 1 and is fixedly connected to the boiler tank body 1. The top of the smoke exhaust pipe 42 is located above the boiler tank body 1. Through the setting of the smoke exhaust pipe 42, the middle part of the smoke exhaust pipe 42 is located inside the boiler tank body 1, which can further heat the moisture inside the boiler tank body 1 and effectively utilize the waste heat of the combustion exhaust gas in the combustion chamber 4.,

[0027] All the electrical components appearing in this text are electrically connected to the external main controller and the 220V mains electricity, and the main controller can be a conventional known device such as a computer for control purposes.

[0028] In use, water is injected into the boiler tank body 1 through the water inlet pipe 11 of the tank body. Lumps of coal are put into the pulverizing box body 2 from the feed inlet 21. The pulverizing box body 2 pulverizes the coal into coal powder and discharges it into the premixing box body 3 from the coal powder outlet 22. The air pump 31 is started, and after extracting and pressurizing the outside air, it is discharged into the premixing box body 3 from the air inlet pipe 32. After the coal ash and gas are fully mixed in the premixing box body 3, they are discharged into the combustion chamber 4 through multiple premixing flow pipes 34. The igniter 41 ignites the premixed combustibles to start heating, and the heat-resistant water pump 14 starts to work, pumping the cold water at the bottom of the boiler tank body 1 into the heating box body 5. After being heated by the combustion chamber 4, the hot water is discharged to the top of the boiler tank body 1 through the hot water outlet pipe 16. The cooperative setting of the water inlet end water distribution plate 51, the water outlet end water distribution plate 53 and multiple middle partition plates 55 can divide the heating box body 5 into multiple heating chambers, so that the water in the heating box body 5 can be fully heated. After the premixed combustibles in the combustion chamber 4 are burned, the waste gas is discharged from the smoke exhaust pipe 42. Since the middle part of the smoke exhaust pipe 42 is located inside the boiler tank body 1, the moisture inside the boiler tank body 1 can be further heated.

[0029] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A novel coal-fired boiler system based on a multi-channel through-flow pulverized coal burner, comprising a boiler tank body (1), characterized in that : A pulverizing box body (2) and a combustion chamber (4) are fixedly connected to the bottom of the boiler tank body (1). A premixing box body (3) is arranged between the pulverizing box body (2) and the combustion chamber (4). An air pump (31) is fixedly connected to the top of the premixing box body (3). An air inlet pipe (32) is fixedly connected to the bottom of the air pump (31). A pulverized coal outlet (22) is fixedly connected to one side of the pulverizing box body (2) close to the premixing box body (3). A premixing partition plate (33) is fixedly connected to the middle of the inner cavity of the premixing box body (3). A plurality of premixing through-flow pipes (34) are fixedly connected to the middle of the premixing partition plate (33). One ends of the plurality of premixing through-flow pipes (34) far from the premixing partition plate (33) all penetrate through the premixing box body (3) and extend into the combustion chamber (4). An igniter (41) is fixedly connected to the bottom of the combustion chamber (4). A heating box body (5) is fixedly connected to the top of the combustion chamber (4). An inlet water end water distribution plate (51), an outlet water end water distribution plate (53) and a plurality of middle partition plates (55) are fixedly connected inside the heating box body (5). The plurality of middle partition plates (55), inlet water end water distribution holes (52) and outlet water end water distribution holes (54) are all linearly distributed at equal intervals. The plurality of middle partition plates (55), inlet water end water distribution holes (52) and outlet water end water distribution holes (54) are staggered. The heating box body (5) is divided into a plurality of heating chambers, and the water in the heating box body (5) can be fully heated. A plurality of inlet water end water distribution holes (52) are opened in the middle of the inlet water end water distribution plate (51). A plurality of outlet water end water distribution holes (54) are opened in the middle of the outlet water end water distribution plate (53). A sealed box body (13) and a hot water outlet pipe (16) are arranged inside the boiler tank body (1). The bottom of the hot water outlet pipe (16) penetrates through the boiler tank body (1) and extends into the heating box body (5). A heat-resistant water pump (14) is fixedly connected inside the sealed box body (13). A water pump inlet pipe (15) is fixedly connected to the top of the sealed box body (13). The bottom of the water pump inlet pipe (15) penetrates through the heat-resistant water pump (14), the water pump inlet pipe (15) and the boiler tank body (1) and extends into the heating box body (5). A smoke exhaust pipe (42) is fixedly connected to one side of the combustion chamber (4) far from the premixing box body (3); The bottom of the hot water outlet pipe (16) is located between the inner wall of the heating box body (5) and the outlet water end water distribution plate (53), and the bottom of the hot water outlet pipe (16) is fixedly connected to the heating box body (5). The bottom of the water pump inlet pipe (15) is located between the inner wall of the heating box body (5) and the inlet water end water distribution plate (51), and the bottom of the water pump inlet pipe (15) is fixedly connected to the heating box body (5). The top of the hot water outlet pipe (16) is higher than the top of the water pump inlet pipe (15).

2. The novel coal-fired boiler system based on a multi-channel through-flow pulverized coal burner according to claim 1, characterized in that : The pulverizing box body (2) is located on one side of the bottom of the boiler tank body (1), the combustion chamber (4) is located on the other side of the bottom of the boiler tank body (1), a feed inlet (21) is opened at the top of the pulverizing box body (2), and the feed inlet (21) is located on the side of the top of the pulverizing box body (2) away from the boiler tank body (1).

3. The novel coal-fired boiler system based on a multi-channel through-flow pulverized coal burner according to claim 1, characterized in that : A tank body water inlet pipe (11) is fixedly connected to the middle of one side of the boiler tank body (1) close to the pulverizing box body (2), one end of the tank body water inlet pipe (11) close to the boiler tank body (1) extends into the boiler tank body (1), a tank body water outlet pipe (12) is fixedly connected to the middle of one side of the boiler tank body (1) close to the combustion chamber (4), and one end of the tank body water outlet pipe (12) close to the boiler tank body (1) extends into the boiler tank body (1).

4. The novel coal-fired boiler system based on a multi-channel through-flow pulverized coal burner according to claim 1, characterized in that : One end of the premixing box body (3) is fixedly connected to the pulverizing box body (2), the other end of the premixing box body (3) is fixedly connected to the combustion chamber (4), and one side of the air pump (31) is fixedly connected to the pulverizing box body (2).

5. The novel coal-fired boiler system based on a multi-channel through-flow pulverized coal burner according to claim 1, characterized in that : One end of the pulverized coal outlet (22) away from the pulverizing box body (2) extends into the premixing box body (3), the bottom of the air inlet pipe (32) penetrates through the premixing box body (3) and is fixedly connected to the premixing box body (3), and both the air inlet pipe (32) and the pulverized coal outlet (22) are located between the pulverizing box body (2) and the premixing partition plate (33).

6. The novel coal-fired boiler system based on a multi-channel through-flow pulverized coal burner according to claim 1, characterized in that : A plurality of the premixing through-flow pipes (34) are distributed in a circular array, one end of each of the plurality of premixing through-flow pipes (34) close to the premixing partition plate (33) penetrates through the premixing partition plate (33), one end of each of the plurality of premixing through-flow pipes (34) close to the premixing partition plate (33) is located between the pulverizing box body (2) and the premixing partition plate (33), and one end of each of the plurality of premixing through-flow pipes (34) away from the premixing partition plate (33) is fixedly connected to the combustion chamber (4).

7. The novel coal-fired boiler system based on a multi-channel through-flow pulverized coal burner according to claim 1, characterized in that : The water outlet end water distribution plate (53) is located on one side of the inner cavity of the heating box body (5), the water inlet end water distribution plate (51) is located on the other side of the inner cavity of the heating box body (5), a plurality of the middle partition plates (55) are all located between the water outlet end water distribution plate (53) and the water inlet end water distribution plate (51), and both ends of each of the plurality of middle partition plates (55) are fixedly connected to the water outlet end water distribution plate (53) and the water inlet end water distribution plate (51) respectively.

8. The novel coal-fired boiler system based on a multi-channel through-flow pulverized coal burner according to claim 1, characterized in that The bottom of the exhaust pipe (42) extends into the combustion chamber (4) and is fixedly connected to the combustion chamber (4). The middle part of the exhaust pipe (42) penetrates through the boiler tank body (1) and is fixedly connected to the boiler tank body (1). The top of the exhaust pipe (42) is located above the boiler tank body (1).

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