Biomass combustion boiler with high heat utilization rate

Abstract

The invention belongs to the technical field of biomass combustion boilers, and particularly relates to a high-heat-utilization-rate biomass combustion boiler which comprises a boiler body, a heating water tank fixedly arranged on the upper end face of the boiler body, a fuel feeding box fixedly arranged on the left end face of the boiler body, a dismounting box fixedly arranged on the right end face of the boiler body, and a power box fixedly arranged on the front end face of the fuel feeding box. Moving frames on the two sides start to move towards one side of the center, at the moment, metal sliding rods can slide on the upper end face of a combustion carrying plate, fuel can be pushed to move and turn over under the influence of cross placement of a fixed inner frame, and the fuel with the large size is further crushed; and combustion ash can downwards enter the combustion ash cavity through the combustion support plate, so that the combustion heat release efficiency of biomass fuel on the upper end face of the combustion support plate can be greatly improved, the heat utilization rate of the biomass combustion device is greatly improved, and the cost required by combustion is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of biomass combustion boilers, in particular to a biomass combustion boiler with high heat utilization rate. Background Art

[0002] Biomass is a waste product from agriculture and forestry production. If it is discarded and burned at will, it will seriously pollute the environment. Using biomass to burn in a boiler and using the steam generated to generate electricity or heating has the social benefits of saving energy and reducing environmental pollution, as well as good economic benefits.

[0003] However, when the existing biomass burner is in use, the material enters the combustion equipment through the feed box. Due to structural limitations, the material will accumulate on one side of the combustion equipment and cannot be spread out or moved to a suitable area. As a result, it is easy to have low combustion efficiency and uneven combustion during subsequent combustion work. At the same time, the biomass materials entering the combustion are of different sizes, resulting in different times required for full combustion, and uneven biomass combustion efficiency. All of these will lead to low overall heat utilization of the combustion boiler and high combustion costs. Summary of the invention

[0004] The object of the present invention is to provide a biomass combustion boiler with high heat utilization rate, so as to overcome the above-mentioned defects in the prior art.

[0005] A high heat utilization rate biomass combustion boiler according to the present invention comprises a furnace body, wherein a heating water tank is fixedly arranged on the upper end surface of the furnace body, a fuel delivery box is fixedly arranged on the left end surface of the furnace body, a disassembly box is fixedly arranged on the right end surface of the furnace body, and a power box is fixedly arranged on the front end surface of the fuel delivery box;

[0006] A combustion chamber is provided in the furnace body, a partition is fixedly provided on the upper wall of the combustion chamber, the lower side of the outer circular surface of the heating water tank is fixedly connected to the partition, a top transmission chamber is provided on the upper end face of the partition, a combustion carrier plate is fixedly provided on the lower wall of the combustion chamber, a gap for ash to pass through is provided inside the combustion carrier plate, an evaporation chamber is provided in the heating water tank, a plurality of evenly distributed smoke exhaust heat absorption pipes are fixedly provided on the left and right walls of the evaporation chamber, two movable frames that can move forward and backward are symmetrically provided in the combustion chamber, a fuel delivery chamber with an upward opening is provided in the power box, a fuel throwing roller is rotatably provided in the fuel delivery chamber, and a speed change chamber is provided in the power box.

[0007] As a further technical solution of the present invention, a smoking pump is fixedly provided on the rear side of the left end face of the heating water tank, the right end face of the smoking pump is connected to the left end face of the smoke exhaust heat absorption pipe on the rear side, a smoking port is fixedly provided on the lower end face of the smoking pump, the lower end face of the smoking port passes through the partition and extends into the combustion chamber, two transmission pumps are symmetrically provided front and rear on the right end face of the heating water tank, the end faces of the transmission pumps on both sides close to the symmetry center are connected to each other, the left end faces of the transmission pumps on both sides are connected to the right end face of the smoke exhaust heat absorption pipe on the same side, a smoke exhaust pump is fixedly provided on the front side of the left end face of the heating water tank, the upper end face of the smoke exhaust pump is provided with a smoke exhaust port connected to the external smoke exhaust equipment, and the right end face of the smoke exhaust pump is connected to the left end face of the smoke exhaust heat absorption pipe on the front side.

[0008] As a further technical solution of the present invention, five cutting tool holders are fixedly provided on the left side of the lower wall of the fuel delivery chamber, and the cutting tool holders can cut biomass fuel. A gap designed to cooperate with the cutting tool holders is provided in the fuel throwing roller, and the right wall of the fuel delivery chamber is connected to the left wall of the combustion chamber.

[0009] As a further technical solution of the present invention, two speed change wheels are rotatably provided in the speed change chamber, the speed change wheels are conical in shape and the two cones are in opposite directions, the rear end face of the speed change wheel on the right side is fixedly connected to the front end face of the fuel ejection roller, and a connecting wheel that can rotate and move forward and backward is provided between the outer circular surfaces of the speed change wheels on both sides, a material ejection motor is fixedly provided on the left side of the rear wall of the speed change chamber, and a speed change cylinder is fixedly provided on the front wall of the speed change chamber, the rear end face of the speed change cylinder can be telescopically moved and is rotatably connected to the front end face of the connecting wheel, and the rear end face of the speed change wheel on the left side is dynamically connected to the material ejection motor.

[0010] As a further technical solution of the present invention, two threaded inner shafts are symmetrically arranged in the combustion chamber and can rotate. The front and rear sides of the outer circular surface of the threaded inner shaft are threaded surfaces with opposite thread directions and are threadedly connected to the upper end face of the movable frame on the same side. A crushing motor is fixedly arranged on the front end face of the furnace body, and the front end face of the threaded inner shaft is dynamically connected to the crushing motor.

[0011] As a further technical solution of the present invention, an ash cavity is provided on the lower end surface of the combustion carrier plate, and the ash cavity is used to store ash. A cleaning disassembly door is rotatably provided in the disassembly box, and the coal ash can be removed after the cleaning disassembly door is opened.

[0012] As a further technical solution of the present invention, a plurality of evenly arranged fixed inner frames are fixedly provided on the end face of one side close to the center of the movable frame, the fixed inner frames on the front and rear sides are placed crosswise, and the lower end face of the fixed inner frame is provided with a metal sliding rod that can move up and down, the lower end face of the metal sliding rod is spherical and made of metal material, a contraction limit cavity is provided in the fixed inner frame, the upper end face of the metal sliding rod extends into the contraction limit cavity on the same side and a contraction spring is fixedly connected to the upper wall of the contraction limit cavity.

[0013] As a further technical solution of the present invention, a water level detector is fixedly provided in the evaporation chamber, and the water level detector can detect the water level in the evaporation chamber; a pressure relief pipe for pressure relief is provided on the upper side of the front wall of the evaporation chamber, and the front end face of the pressure relief pipe is connected with an external pressure relief valve; a steam discharge port for discharging steam is provided on the upper wall of the evaporation chamber, a water inlet for water intake is provided on the right side of the upper wall of the evaporation chamber, three oxygen inlets for oxygen intake are provided on the rear wall of the combustion chamber, and an igniter for ignition is fixedly provided in the combustion chamber.

[0014] As a further technical solution of the present invention, a control panel is fixedly provided on the front end surface of the furnace body, and the control panel can control the start and stop of all motors, cylinders and devices of the present invention.

[0015] The beneficial effects of the present invention are:

[0016] 1. The present invention rotates the fuel ejection roller counterclockwise so that the outer end surface of the fuel ejection roller can rotate to the lower side together with the biomass fuel. When rotating to the side of the cutting tool holder, the cutting tool holder will cut the biomass fuel, thereby preventing the problem of the biomass fuel being too large to be fully burned, and making the biomass fuel burn more fully.

[0017] 2. The present invention starts the speed-changing cylinder to move the connecting wheel forward, thereby adjusting the contact surface between the connecting wheel and the speed-changing wheel, and further changing the rotation speed of the fuel throwing roller, so that the rotation speed of the fuel throwing roller is accelerated, so that the fuel in the fuel delivery chamber can be directly thrown into the combustion chamber, and the rotation speed of the fuel throwing roller is changed by adjusting the extension and contraction amplitude of the speed-changing cylinder in real time, thereby changing the throwing distance of the biomass fuel, so that the biomass fuel will not be piled on the same side of the combustion chamber, and the scattering area is larger, so that the present invention has a larger heating area, which can greatly accelerate the heating speed.

[0018] 3. The present invention starts to move the movable racks on both sides toward the center. At this time, the lower end surface of the metal sliding rod is affected by gravity and the stretching of the contraction spring, and will always slide on the upper end surface of the combustion carrier plate. As the movable racks, the fixed inner frame and the metal sliding rod on both sides move toward the center, the cross-placement of the fixed inner frame will push the fuel to move and turn over, and further break up the larger volume of fuel, and enable the ash to pass downward through the combustion carrier plate into the ash cavity, thereby greatly improving the combustion heat release efficiency of the biomass fuel on the upper end surface of the combustion carrier plate, thereby greatly improving the heat utilization rate of the present invention and reducing the cost required for combustion.

[0019] 4. The thick smoke generated by the combustion of the present invention will enter the combustion carrier plate on the rear side through the smoking port and the smoking pump when the smoking pump is started, and move to the right to the transmission pump on the rear side, and then move to the smoke exhaust heat absorption pipe on the front side when the transmission pump is started, and finally pass through the smoke exhaust pump and be discharged to the external smoke exhaust equipment from the smoke exhaust port. When the agricultural tobacco enters the smoke exhaust heat absorption pipe twice, the water in the evaporation chamber will fully absorb the heat of the smoke body in the smoke exhaust heat absorption pipe, thereby further heating the water in the evaporation chamber, which can greatly improve the heat utilization rate of the present invention, accelerate the boiling speed of the water in the evaporation chamber, and thus greatly improve the working efficiency of the boiler. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic front view of the appearance of the present invention;

[0021] Figure 2 is a schematic top view of the appearance of the present invention;

[0022] Figure 3 It is a schematic left side view of the appearance of the present invention;

[0023] Figure 4 This is a schematic diagram of the overall structure of a biomass combustion boiler with high heat utilization rate according to the present invention;

[0024] Figure 5 The present invention Figure 4 Schematic diagram of AA in the middle;

[0025] Figure 6 The present invention Figure 4 Schematic diagram of the middle BB;

[0026] Figure 7 The present invention Figure 6 Schematic diagram of CC;

[0027] Figure 8 The present invention Figure 7 A partial enlarged schematic diagram of the fixed inner frame component.

[0028] In the figure:

[0029] 11. Furnace body; 12. Heating water tank; 13. Water inlet; 14. Steam outlet; 15. Water level detector; 16. Smoke outlet; 17. Pressure relief pipe; 18. Fuel delivery box; 19. Fuel delivery chamber; 20. Speed ​​change chamber; 21. Control panel; 22. Crushing motor; 23. Disassembly box; 24. Power box; 25. Top transmission chamber; 26. Evaporation chamber; 27. Smoke exhaust heat absorption pipe; 28. Smoke pump; 29. ​​Smoke outlet; 30. Partition; 3 1. Transmission pump; 32. Combustion chamber; 33. Threaded inner shaft; 34. Igniter; 35. Oxygen inlet; 36. Moving frame; 37. Combustion carrier plate; 38. Ash chamber; 39. Fuel ejection roller; 40. Cutting knife holder; 41. Metal sliding rod; 42. Smoke exhaust pump; 43. Variable speed cylinder; 44. Variable speed wheel; 45. Connecting wheel; 46. Material ejection motor; 47. Fixed inner frame; 48. Cleaning and disassembly door; 49. Retraction limit chamber; 50. Retraction spring. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention:

[0031] See attached Figure 1-Figure 8 According to an embodiment of the present invention, a high heat utilization rate biomass combustion boiler comprises a furnace body 11, a heating water tank 12 is fixedly provided on the upper end surface of the furnace body 11, a fuel delivery box 18 is fixedly provided on the left end surface of the furnace body 11, a disassembly box 23 is fixedly provided on the right end surface of the furnace body 11, and a power box 24 is fixedly provided on the front end surface of the fuel delivery box 18;

[0032] A combustion chamber 32 is provided in the furnace body 11, and a partition 30 is fixedly provided on the upper wall of the combustion chamber 32. The lower side of the outer cylindrical surface of the heating water tank 12 is fixedly connected to the partition 30, and a top transmission chamber 25 is provided on the upper end face of the partition 30. A combustion carrier plate 37 is fixedly provided on the lower wall of the combustion chamber 32, and a gap is provided inside the combustion carrier plate 37 for the passage of ash. An evaporation chamber 26 is provided in the heating water tank 12, and a plurality of evenly distributed smoke exhaust heat absorption pipes 27 are fixedly provided on the left and right walls of the evaporation chamber 26. Two movable frames 36 that can move forward and backward are symmetrically provided in the front and back of the combustion chamber 32. A fuel delivery chamber 19 with an opening upward is provided in the power box 24, and a fuel ejection roller 39 is rotatably provided in the fuel delivery chamber 19. A speed change chamber 20 is provided in the power box 24.

[0033] Among them, a smoking pump 28 is fixedly provided on the rear side of the left end face of the heating water tank 12, and the right end face of the smoking pump 28 is connected to the left end face of the smoke exhaust heat absorption pipe 27 on the rear side, and a smoking port 29 is fixedly provided on the lower end face of the smoking pump 28, and the lower end face of the smoking port 29 passes through the partition 30 and extends into the combustion chamber 32. The right end face of the heating water tank 12 is symmetrically provided with two transmission pumps 31 in the front and rear and fixedly provided, and the end faces of the transmission pumps 31 on both sides are connected to each other near the end faces of the symmetry center, and the left end faces of the transmission pumps 31 on both sides are connected to the right end face of the smoke exhaust heat absorption pipe 27 on the same side, and a smoke exhaust pump 42 is fixedly provided on the front side of the left end face of the heating water tank 12, and the upper end face of the smoke exhaust pump 42 is provided with a smoke exhaust port 16 connected to the external smoke exhaust equipment, and the right end face of the smoke exhaust pump 42 is connected to the left end face of the smoke exhaust heat absorption pipe 27 on the front side.

[0034] Among them, five cutting tool holders 40 are fixedly provided at the left side of the lower wall of the fuel delivery chamber 19, and the cutting tool holders 40 can cut biomass fuel. A gap designed to cooperate with the cutting tool holders 40 is provided in the fuel throwing roller 39, and the right wall of the fuel delivery chamber 19 is connected to the left wall of the combustion chamber 32.

[0035] Among them, two speed change wheels 44 are rotatably arranged in the speed change chamber 20, and the speed change wheels 44 are conical and the two cones are in opposite directions. The rear end face of the speed change wheel 44 on the right side is fixedly connected to the front end face of the fuel ejection roller 39, and a connecting wheel 45 that can rotate and move forward and backward is arranged between the outer circumferential surfaces of the speed change wheels 44 on both sides. A material ejection motor 46 is fixedly arranged on the left side of the rear wall of the speed change chamber 20, and a speed change cylinder 43 is fixedly arranged on the front wall of the speed change chamber 20. The rear end face of the speed change cylinder 43 can be telescopically moved and connected to the connecting wheel 45 The front end face is rotationally connected, and the rear end face of the speed-changing wheel 44 on the left is dynamically connected to the material-throwing motor 46. The material-throwing motor 46 is started to drive the speed-changing wheel 44 on the left to rotate, thereby driving the connecting wheel 45 to rotate, and then driving the speed-changing wheel 44 on the right to rotate, thereby driving the fuel-throwing roller 39 to rotate, and by starting the speed-changing cylinder 43 to move the connecting wheel 45 back and forth, thereby adjusting the contact surface between the connecting wheel 45 and the speed-changing wheel 44, thereby changing the rotation speed of the fuel-throwing roller 39.

[0036] Among them, two threaded inner shafts 33 are symmetrically and rotatably provided in the combustion chamber 32, the front and rear sides of the outer circumferential surface of the threaded inner shaft 33 are threaded surfaces with opposite thread directions and are threadedly connected to the upper end face of the movable frame 36 on the same side, and a crushing motor 22 is fixedly provided on the front end face of the furnace body 11, and the front end face of the threaded inner shaft 33 is dynamically connected to the crushing motor 22. When the crushing motor 22 is started, it drives the threaded inner shaft 33 to rotate, thereby driving the movable frames 36 on both sides to start moving toward or away from the center.

[0037] The lower end surface of the combustion carrier plate 37 is provided with an ash chamber 38 for storing ash. A cleaning disassembly door 48 is rotatably provided in the disassembly box 23. After the cleaning disassembly door 48 is opened, the coal ash can be removed.

[0038] Among them, a plurality of evenly arranged fixed inner frames 47 are fixedly provided on the end face of one side close to the center of the movable frame 36, and the fixed inner frames 47 on the front and rear sides are placed crosswise, and the lower end face of the fixed inner frame 47 is provided with a metal sliding rod 41 which can move up and down, and the lower end face of the metal sliding rod 41 is spherical and made of metal material, and a contraction limit cavity 49 is provided in the fixed inner frame 47, and the upper end face of the metal sliding rod 41 extends into the contraction limit cavity 49 on the same side and a contraction spring 50 is fixedly connected to the upper wall of the contraction limit cavity 49.

[0039] Among them, a water level detector 15 is fixedly provided in the evaporation chamber 26, and the water level detector 15 can detect the water level in the evaporation chamber 26; a pressure relief pipe 17 for pressure relief is provided on the upper side of the front wall of the evaporation chamber 26, and the front end face of the pressure relief pipe 17 is connected with an external pressure relief valve; a steam discharge port 14 for discharging steam is provided on the upper wall of the evaporation chamber 26, a water inlet 13 for water intake is provided on the right side of the upper wall of the evaporation chamber 26, three oxygen inlets 35 for oxygen intake are provided on the rear wall of the combustion chamber 32, and an igniter 34 for ignition is fixedly provided in the combustion chamber 32.

[0040] A control panel 21 is fixedly disposed on the front end of the furnace body 11, and the control panel 21 can control the start and stop of all motors, cylinders and devices of the present invention.

[0041] The high heat utilization rate biomass combustion boiler of the present invention has the following working process:

[0042] Before operation, the steam discharge port 14 can be connected to external steam equipment, the water inlet 13 can be connected to an external water inlet pump, the oxygen inlet 35 can be connected to an external oxygen inlet pump, and the smoke exhaust port 16 can be connected to an external smoke exhaust device. Then, the boiler water is injected into the evaporation chamber 26 through the water inlet 13, and the water level is monitored by the water level detector 15. When the water level in the evaporation chamber 26 is at a suitable height, the combustion operation can be started.

[0043] When the combustion operation is performed, the biomass fuel can be placed in the fuel delivery chamber 19, and the ejection motor 46 is started. The ejection motor 46 starts to drive the left speed wheel 44 to rotate, thereby driving the connecting wheel 45 to rotate, and then driving the right speed wheel 44 to rotate, thereby driving the fuel ejection roller 39 to rotate counterclockwise, so that the outer end surface of the fuel ejection roller 39 can rotate to the lower side together with the biomass fuel. When it rotates to the side of the cutting tool holder 40, the cutting tool holder 40 will cut the biomass fuel, thereby preventing the problem of the biomass fuel being too large to be fully burned, and making the biomass fuel burn more fully.

[0044] After the fuel is cut by the cutting tool holder 40, the speed change cylinder 43 can be started to move the connecting wheel 45 forward, thereby adjusting the contact surface between the connecting wheel 45 and the speed change wheel 44, and then changing the rotation speed of the fuel throwing roller 39, so that the rotation speed of the fuel throwing roller 39 is accelerated, so that the fuel in the fuel delivery chamber 19 can be directly thrown into the combustion chamber 32, and the rotation speed of the fuel throwing roller 39 can be changed by adjusting the extension and contraction range of the speed change cylinder 43 in real time, thereby changing the throwing distance of the biomass fuel, so that the biomass fuel will not be piled on the same side of the combustion chamber 32, and the scattering area is larger, so that the present invention has a larger heating area, which can greatly increase the heating rate, and then the fuel can be ignited by the igniter 34.

[0045] When the biomass fuel is burning, the crushing motor 22 can be started to drive the threaded inner shaft 33 to rotate, thereby driving the movable frames 36 on both sides to start moving toward the center. At this time, the lower end surface of the metal sliding rod 41 is affected by gravity and the stretching of the contraction spring 50, and will always slide on the upper end surface of the combustion carrier plate 37. As the movable frames 36, the fixed inner frame 47 and the metal sliding rod 41 on both sides move toward the center, under the influence of the cross placement of the fixed inner frame 47, the fuel will be pushed to move and turn over, and the larger volume of fuel will be further crushed, and the ash can be passed downward through the combustion carrier plate 37 into the ash chamber 38, thereby greatly improving the combustion heat release efficiency of the biomass fuel on the upper end surface of the combustion carrier plate 37, thereby greatly improving the heat utilization rate of the present invention and reducing the cost required for combustion.

[0046] When the combustion generates heat, it will drive the water in the evaporation chamber 26 to heat and boil to generate steam, and the steam will be discharged to the external steam equipment through the steam discharge port 14. The high-temperature thick smoke generated by the combustion in the combustion chamber 32 will enter the combustion carrier plate 37 on the rear side through the smoking port 29 and the smoking pump 28 under the start of the smoking pump 28, and move to the right to the transmission pump 31 on the rear side, and then move to the front side of the smoke exhaust heat absorption pipe 27 under the start of the transmission pump 31, and finally pass through the smoke exhaust pump 42 and be discharged to the external smoke exhaust equipment from the smoke exhaust port 16. When the agricultural tobacco enters the smoke exhaust heat absorption pipe 27 twice, the water in the evaporation chamber 26 will fully absorb the heat of the smoke body in the smoke exhaust heat absorption pipe 27, thereby further heating the water in the evaporation chamber 26, which can greatly improve the heat utilization rate of the present invention, accelerate the boiling speed of the water in the evaporation chamber 26, and thus greatly improve the working efficiency of the boiler.

[0047] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A biomass combustion boiler with high heat utilization rate, comprising a furnace body (11), characterized in that: A heating water tank (12) is fixedly provided on the upper end surface of the furnace body (11), a fuel delivery box (18) is fixedly provided on the left end surface of the furnace body (11), a disassembly box (23) is fixedly provided on the right end surface of the furnace body (11), and a power box (24) is fixedly provided on the front end surface of the fuel delivery box (18); The furnace body (11) is provided with a combustion chamber (32), the upper wall of the combustion chamber (32) is fixedly provided with a partition (30), the lower side of the outer circumferential surface of the heating water tank (12) is fixedly connected to the partition (30), the upper end surface of the partition (30) is provided with a top transmission chamber (25), the lower wall of the combustion chamber (32) is fixedly provided with a combustion carrier (37), the combustion carrier (37) is provided with a hole for ash to pass through, the heating water tank (12) is provided with an evaporation chamber (26), the left and right walls of the evaporation chamber (26) are fixedly provided with a plurality of evenly distributed smoke exhaust heat absorption pipes (27), the combustion chamber (32) is symmetrically provided with two movable frames (36) that can move forward and backward, the power box (24) is provided with a fuel delivery chamber (19) with an opening upward, the fuel delivery chamber (19) is rotatably provided with a fuel ejection roller (39), and the power box (24) is provided with a speed change chamber (20).

2. A biomass combustion boiler with high heat utilization rate according to claim 1, characterized in that: A smoking pump (28) is fixedly provided at the rear side of the left end face of the heating water tank (12); the right end face of the smoking pump (28) is connected to the left end face of the smoke exhaust heat absorption pipe (27) at the rear side; a smoking port (29) is fixedly provided at the lower end face of the smoking pump (28); the lower end face of the smoking port (29) passes through the partition (30) and extends into the combustion chamber (32); two transmission pumps (31) are fixedly provided at the right end face of the heating water tank (12) in a symmetrical manner in the front and rear. The end faces of the transmission pumps (31) on the sides close to the symmetry center are connected to each other, and the left end faces of the transmission pumps (31) on both sides are connected to the right end faces of the smoke exhaust heat absorption pipe (27) on the same side. A smoke exhaust pump (42) is fixedly provided on the front side of the left end face of the heating water tank (12), and the upper end face of the smoke exhaust pump (42) is provided with a smoke exhaust port (16) connected to an external smoke exhaust device, and the right end face of the smoke exhaust pump (42) is connected to the left end face of the smoke exhaust heat absorption pipe (27) on the front side.

3. The high heat utilization rate biomass combustion boiler according to claim 1, characterized in that: Five cutting tool holders (40) are fixedly provided on the left side of the lower wall of the fuel delivery chamber (19), and the right wall of the fuel delivery chamber (19) is connected to the left wall of the combustion chamber (32).

4. The high heat utilization rate biomass combustion boiler according to claim 1 is characterized in that: Two speed change wheels (44) are rotatably provided in the speed change chamber (20), the rear end face of the speed change wheel (44) on the right side is fixedly connected to the front end face of the fuel ejection roller (39), and a connecting wheel (45) that can rotate and move forward and backward is provided between the outer circumferential surfaces of the speed change wheels (44) on both sides, a material ejection motor (46) is fixedly provided on the left side of the rear wall of the speed change chamber (20), and a speed change cylinder (43) is fixedly provided on the front wall of the speed change chamber (20), the rear end face of the speed change cylinder (43) is rotatably connected to the front end face of the connecting wheel (45), and the rear end face of the speed change wheel (44) on the left side is dynamically connected to the material ejection motor (46).

5. The high heat utilization rate biomass combustion boiler according to claim 1 is characterized in that: Two threaded inner shafts (33) are symmetrically arranged in the combustion chamber (32) and are rotatable. The front and rear sides of the outer circumferential surface of the threaded inner shaft (33) are threadedly connected to the upper end surface of the movable frame (36) on the same side. A crushing motor (22) is fixedly arranged on the front end surface of the furnace body (11), and the front end surface of the threaded inner shaft (33) is dynamically connected to the crushing motor (22).

6. The high heat utilization rate biomass combustion boiler according to claim 1, characterized in that: The lower end surface of the combustion carrier plate (37) is provided with an ash burning cavity (38), and a cleaning disassembly door (48) is rotatably provided in the disassembly box (23).

7. The high heat utilization rate biomass combustion boiler according to claim 1, characterized in that: The movable frame (36) is fixedly provided with a plurality of evenly arranged fixed inner frames (47) on one end face close to the center, and the fixed inner frames (47) on the front and rear sides are placed crosswise, and the lower end face of the fixed inner frame (47) is provided with a metal sliding rod (41) that can move up and down, and a contraction limit cavity (49) is provided in the fixed inner frame (47), and the upper end face of the metal sliding rod (41) extends into the contraction limit cavity (49) on the same side and is fixedly connected to the upper wall of the contraction limit cavity (49) with a contraction spring (50).

8. The high heat utilization rate biomass combustion boiler according to claim 1, characterized in that: A water level detector (15) is fixedly arranged in the evaporation chamber (26); a pressure relief pipe (17) is arranged on the upper side of the front wall of the evaporation chamber (26); a front end surface of the pressure relief pipe (17) is communicated with an external pressure relief valve; a steam discharge port (14) is arranged on the upper wall of the evaporation chamber (26); a water inlet (13) is arranged on the right side of the upper wall of the evaporation chamber (26); three oxygen inlets (35) are arranged on the rear wall of the combustion chamber (32); and an igniter (34) is fixedly arranged in the combustion chamber (32).

9. The high heat utilization rate biomass combustion boiler according to claim 1, characterized in that: A control panel (21) is fixedly provided on the front end surface of the furnace body (11).

Images