Energy-saving biomass steam furnace with feed hopper capable of inhibiting dust

Abstract

This utility model discloses an energy-saving biomass steam boiler with a dust-suppressing hopper, comprising a steam boiler and a boiler hopper. The boiler hopper is mounted on the side wall of the steam boiler, and small heat-resistant water tanks are symmetrically arranged on the side wall of the boiler hopper. Each small heat-resistant water tank has a water pipe connector at its bottom. A secondary air fan is mounted outside the boiler hopper, with a suction pipe at its top extending into the interior of the boiler hopper. An air outlet pipe is mounted on the side wall of the secondary air fan and connected to the steam boiler. A dust curtain is installed at the opening of the boiler hopper, with a connecting shaft at its top. This utility model not only allows for flexible adjustment of the dust curtain length to prevent dust dispersion and facilitates the suction of dust and secondary air delivery to the boiler for complete combustion, but also improves the dust suppression effect.

Description

Technical Field

[0001] This utility model relates to the field of steam furnace technology, specifically to an energy-saving biomass-fired steam furnace with a feed hopper that can suppress dust. Background Technology

[0002] In commercially available biomass-fired steam boilers, the fuel feed hopper is open. During the fuel feeding process, a lot of dust is raised, making it easy for the boiler to be covered with dust, affecting the hygiene of the boiler room. Excessive ash accumulation is also detrimental to temperature control. At the same time, at lower loads (lower grate speed), the fuel is more likely to burn in the hopper, causing the hopper to burn and be damaged. In order to reduce dust raising and avoid hopper damage, an energy-saving biomass-fired steam boiler with a feed hopper that can suppress dust is proposed.

[0003] As disclosed in the authorization announcement number CN221460305U, a high-efficiency and energy-saving biomass gasification furnace includes a furnace body; four mounting ears are provided, and the four mounting ears are welded to the left and right sides of the furnace body, and bolt mounting holes are opened on the four mounting ears; the collection assembly is installed inside the furnace body; the biomass storage assembly is installed inside the furnace body; the collection box is slidably installed inside the furnace body; and the U-shaped handle is welded to the front side of the collection box. Although it has achieved the goal of setting up a biomass storage frame with a conical structure to ensure that the biomass is in the center of the furnace body, improving gasification efficiency, ensuring full utilization of biomass, and achieving energy-saving effect, it also has a collection box that is slidably installed inside the furnace body to facilitate the cleaning of biomass residue after combustion by the staff. However, this does not solve the problem that existing steam boilers are not conducive to flexibly adjusting the length of the dust curtain to block the dispersion of dust, nor to the extraction of dust and secondary air supply to the boiler for complete combustion, thus affecting the dust suppression effect. Utility Model Content

[0004] The purpose of this utility model is to provide an energy-saving biomass steam boiler with a feed hopper that can suppress dust, in order to solve the problem mentioned in the background art that the steam boiler is not convenient to flexibly adjust the length of the dust curtain to block the dispersion of dust, which is not conducive to the extraction of dust and secondary air supply to the boiler for complete combustion, thus affecting the dust suppression effect.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an energy-saving biomass steam boiler with a dust-suppressing feed hopper, comprising a steam boiler and a boiler hopper. The boiler hopper is mounted on the side wall of the steam boiler. Symmetrically arranged on the side wall of the boiler hopper are small heat-resistant water tanks, each with a water pipe connector at its bottom. A secondary air fan is mounted outside the boiler hopper, with a suction pipe at its top extending into the interior of the boiler hopper. An air outlet pipe is mounted on the side wall of the secondary air fan and connected to the steam boiler. The opening of the boiler hopper is located at... A dustproof curtain is installed at the location. The top of the dustproof curtain is equipped with a connecting shaft, and the dustproof curtain is movably connected to the boiler hopper through the connecting shaft. A first hydraulic rod is movably installed on the side wall of the boiler hopper on one side of the dustproof curtain. A first push arm is installed at the output end of the first hydraulic rod. A hinge shaft is provided at the end of the first push arm near the dustproof curtain, and the first push arm is movably connected to the dustproof curtain through the hinge shaft. A movable plate is slidably installed on the side wall of the dustproof curtain. Two sets of second hydraulic rods are installed on the side wall of the dustproof curtain on one side of the movable plate. A second push arm is installed at the output end of each of the second hydraulic rods, and the second push arm is connected to the movable plate.

[0006] Preferably, a gas collecting hood is provided on the inner wall of the boiler hopper, and the gas collecting hood is connected to the suction pipe.

[0007] Preferably, an adjustment cover is symmetrically arranged at the port position of the gas collecting hood, and a pin is provided on the side of the adjustment cover near the gas collecting hood, and the adjustment cover is movably connected to the gas collecting hood through the pin.

[0008] Preferably, each of the side walls of the adjustment hood is provided with an arc-shaped arm, and each of the arc-shaped arms is provided with a locking pin. The locking pin is threadedly connected to the arc-shaped arm and extends through the arc-shaped arm into the interior of the gas collection hood.

[0009] Preferably, a drive seat is provided at the center of the top of the boiler hopper, and a transfer frame is provided at the top of the boiler hopper on one side of the drive seat.

[0010] Preferably, a water storage tank is provided at the top of the boiler hopper on one side of the transfer frame, and a flexible hose is provided at the top of the water storage tank, and the flexible hose is connected to the transfer frame.

[0011] Preferably, a servo motor is provided on the side wall of the drive seat, and a worm gear is installed at the output end of the servo motor.

[0012] Preferably, a hollow shaft is movably installed inside the drive seat on one side of the worm, and the hollow shaft extends into the interior of the adapter frame and is movably connected to the adapter frame. A worm wheel is fitted on the surface of the hollow shaft, and the worm wheel meshes with the worm. A spray frame is provided at the bottom end of the hollow shaft.

[0013] Compared with the prior art, the beneficial effects of this utility model are: the steam boiler not only realizes the flexible adjustment of the length of the dust curtain to block the dispersion of dust, but also facilitates the suction of dust and secondary air supply to the boiler for full combustion, and improves the dust suppression effect. (1) The first hydraulic rod drives the first push arm to move, and the first push arm drives the dust curtain to rotate around the connecting shaft through the hinge shaft. The dust curtain is made of stainless steel. The dust curtain is opened. At the same time as the dust curtain is opened, the second hydraulic rod drives the moving plate to slide on the surface of the dust curtain through the second push arm to indirectly lengthen the length of the dust curtain. After the fuel is put into the boiler hopper, dust will be generated. The first hydraulic rod is closed, and the first hydraulic rod drives the dust curtain to reset. The dust curtain and the moving plate seal the feed port of the boiler hopper, leaving only a narrow gap for air intake, so as to reduce the amount of dust drifting out of the boiler hopper. The secondary fan draws gas into the boiler hopper through the suction pipe and the gas collection hood, thereby transporting the dust through the gas outlet pipe to The internal combustion and processing of the steam boiler ensures complete combustion of the fuel. The heat-resistant small water tank is connected to the main soft water tank and uses water temperature changes to achieve water circulation. When fuel burns in the hopper, it can effectively reduce the temperature of the hopper. At the same time, the water in the small water tank is heated, which can effectively recover a small amount of heat energy. In addition, when a fuel hopper fire occurs, the water pipe can be connected to the water pipe joint, and the water in the heat-resistant small water tank can be sprayed to the fire location to extinguish the fire and avoid fire accidents. The length of the dust curtain can be flexibly adjusted to block the dispersion of dust, which facilitates the suction of dust and secondary air supply to the boiler for complete combustion. It also facilitates rapid fire extinguishing at the fuel hopper fire location and can effectively prevent fire accidents. (2) When the secondary fan draws gas into the boiler hopper through the gas collecting hood, according to the narrow tube effect, the air volume remains constant. The smaller the inlet diameter, the faster the air velocity. At this time, the arc arm can be rotated, and the arc arm drives the adjusting hood to rotate around the pin shaft, so that the two sets of adjusting hoods are brought closer to each other, thereby reducing the area of ​​the air inlet and adjusting the suction speed. Then, the locking pin is tightened to keep the adjusting hood in the current position. In this way, the dust in the boiler hopper can be quickly drawn and discharged into the steam boiler. After long-term operation, dust will fall on the inner wall of the boiler hopper. The dust curtain and movable plate are closed at the port of the boiler hopper. The cleaning solution in the water storage tank is pumped through a flexible hose and hollow shaft into the spray frame and sprayed out. A servo motor drives the worm gear to rotate, and the worm gear drives the hollow shaft to rotate through the worm wheel. The adapter frame provides movable support for the hollow shaft. The hollow shaft drives the spray frame to rotate and spray the cleaning solution to clean the dust adhering to the inner wall of the boiler hopper in an all-round way. It realizes flexible adjustment of the dust extraction speed, reduces the need for manual entry into the equipment for cleaning, and improves the convenience of cleaning equipment. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the present invention; Figure 3 This is a three-dimensional structural diagram of the dustproof curtain of this utility model; Figure 4 This is a partial structural schematic diagram of the front cross-section of the boiler hopper of this utility model; Figure 5 This is a three-dimensional partial structural diagram of the steam boiler of this utility model; Figure 6 This is a three-dimensional structural diagram of the gas collection hood of this utility model.

[0015] In the diagram: 1. Steam boiler; 2. Boiler hopper; 3. Heat-resistant small water tank; 4. Suction pipe; 5. Secondary air fan; 6. Gas outlet pipe; 7. First hydraulic rod; 8. First push arm; 9. Hinge shaft; 10. Dustproof curtain; 11. Connecting shaft; 12. Second hydraulic rod; 13. Second push arm; 14. Moving plate; 15. Drive seat; 16. Adapter frame; 17. Water storage tank; 18. Gas collection hood; 19. Servo motor; 20. Worm gear; 21. Worm wheel; 22. Hollow shaft; 23. Sprayer frame; 24. Arc arm; 25. Pin shaft; 26. Adjustment cover; 27. Locking pin; 28. Water pipe joint. Detailed Implementation

[0016] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0017] Please see Figure 1-6This utility model provides an embodiment of an energy-saving biomass steam boiler with a dust-suppressing feed hopper, comprising a steam boiler 1 and a boiler hopper 2. The boiler hopper 2 is mounted on the side wall of the steam boiler 1. Symmetrically arranged on the side wall of the boiler hopper 2 are small heat-resistant water tanks 3, each with a water pipe connector 28 at its bottom. A secondary air fan 5 is mounted outside the boiler hopper 2, with a suction pipe 4 at its top extending into the interior of the boiler hopper 2. An exhaust pipe 6 is mounted on the side wall of the secondary air fan 5 and connected to the steam boiler 1. A dust curtain 10 is mounted at the opening of the boiler hopper 2, with a connecting shaft 11 at its top. Dust curtain 10 is movably connected to boiler hopper 2 via connecting shaft 11. A first hydraulic rod 7 is movably installed on the side wall of boiler hopper 2 on one side of dust curtain 10. The first hydraulic rod 7 serves as a power drive. A first push arm 8 is installed at the output end of the first hydraulic rod 7. A hinge shaft 9 is provided at the end of the first push arm 8 near dust curtain 10. The first push arm 8 is movably connected to dust curtain 10 via hinge shaft 9. A movable plate 14 is slidably installed on the side wall of dust curtain 10. Two sets of second hydraulic rods 12 are provided on the side wall of dust curtain 10 on one side of movable plate 14. The second hydraulic rods 12 serve as a power drive. A second push arm 13 is installed at the output end of each of the second hydraulic rods 12. The second push arm 13 is connected to the movable plate 14. When fuel needs to be added to the boiler hopper 2, to prevent dust from affecting the hygiene of the boiler room, the first hydraulic rod 7 is opened. The first hydraulic rod 7 drives the first push arm 8 to move. The first push arm 8 drives the dust curtain 10 to rotate around the connecting shaft 11 via the hinge shaft 9. The dust curtain 10 is made of stainless steel. At the same time as opening the dust curtain 10, the second hydraulic rod 12 is opened. The second hydraulic rod 12 drives the moving plate 14 to slide on the surface of the dust curtain 10 via the second push arm 13, thereby indirectly lengthening the length of the dust curtain 10. After fuel is added into the boiler hopper 2, dust will be generated. The first hydraulic rod 7 is closed, and the first hydraulic rod 7 drives the dust curtain 10 to reset. The dust curtain 10 and the moving plate 14 seal the feed inlet of the boiler hopper 2, leaving only a narrow slit for air intake, to reduce the amount of dust drifting out of the boiler hopper 2. At the same time, the secondary fan 5 is turned on. The secondary fan 5 draws gas into the boiler hopper 2 through the suction pipe 4 and the gas collection hood 18, thereby transporting the dust through the exhaust pipe 6 to the inside of the steam boiler 1 for combustion and treatment, so as to ensure complete combustion of fuel. The heat-proof small water tank 3 is connected to the main soft water tank and uses water temperature changes to achieve water circulation. When fuel burns in the hopper, it can effectively reduce the temperature of the hopper. At the same time, the water in the small water tank is heated, which can effectively recover a small part of the heat energy. When the fuel burns in the hopper, the water pipe can be connected to the water pipe joint 28, and the water in the heat-proof small water tank 3 can be sprayed to the fire location to extinguish the fire, so as to avoid fire accidents. It realizes the flexible adjustment of the length of the dust curtain to block the dispersion of dust, facilitates the suction of dust and secondary air supply to the boiler for complete combustion, facilitates the rapid extinguishing of the fire at the fuel burns in the hopper, and can effectively prevent the occurrence of fire accidents. A gas collecting hood 18 is provided on the inner wall of the boiler hopper 2, and the gas collecting hood 18 is connected to the suction pipe 4. An adjusting hood 26 is symmetrically provided at the port of the gas collecting hood 18. A pin 25 is provided on the side of the adjusting hood 26 close to the gas collecting hood 18, and the adjusting hood 26 is movably connected to the gas collecting hood 18 through the pin 25. Arc-shaped arms 24 are provided on the side walls of the adjustment cover 26. Locking pins 27 are provided on the surface of the arc-shaped arms 24. The locking pins 27 are threadedly connected to the arc-shaped arms 24 and extend through the arc-shaped arms 24 into the interior of the gas collection cover 18. A drive seat 15 is provided at the center of the top of the boiler hopper 2, and a transfer frame 16 is provided at the top of the boiler hopper 2 on one side of the drive seat 15. A water storage tank 17 is provided at the top of the boiler hopper 2 on one side of the adapter frame 16. A flexible hose is provided at the top of the water storage tank 17 and the flexible hose is connected to the adapter frame 16. A servo motor 19 is provided on the side wall of the drive seat 15. The servo motor 19 plays the role of power drive. A worm gear 20 is installed at the output end of the servo motor 19. A hollow shaft 22 is movably installed inside the drive seat 15 on one side of the worm 20, and the hollow shaft 22 extends into the interior of the adapter frame 16 and is movably connected to the adapter frame 16. A worm wheel 21 is fitted on the surface of the hollow shaft 22, and the worm wheel 21 meshes with the worm 20. A spray frame 23 is provided at the bottom end of the hollow shaft 22. When the secondary fan 5 draws gas into the boiler hopper 2 through the gas collecting hood 18, according to the septum effect, the air volume remains constant. The smaller the inlet diameter, the faster the air velocity. At this time, the arc-shaped arm 24 can be rotated, which drives the adjusting hood 26 to rotate around the pin 25, so that the two sets of adjusting hoods 26 move closer to each other to reduce the area of ​​the air inlet and thus adjust the suction speed. After that, the locking pin 27 is locked to keep the adjusting hood 26 in the current position. In this way, the dust in the boiler hopper 2 can be quickly drawn and discharged into the steam boiler 1. After long-term operation, dust will fall on the inner wall of the boiler hopper 2. At this time, the dust curtain 10 and the moving plate 14 are closed at the port position of the boiler hopper 2. At the location, the water pump inside the water storage tank 17 is turned on, and the cleaning solution in the water storage tank 17 is pumped through the flexible hose and hollow shaft 22 to the inside of the spray frame 23 and sprayed out. The servo motor 19 is turned on, and the servo motor 19 drives the worm 20 to rotate. Under the mutual meshing of the worm 20 and the worm wheel 21, the worm 20 drives the hollow shaft 22 to rotate through the worm wheel 21. The adapter frame 16 provides movable support for the hollow shaft 22. The hollow shaft 22 drives the spray frame 23 to rotate and spray the cleaning solution to clean the dust adhering to the inner wall of the boiler hopper 2 in an all-round way. It realizes flexible adjustment of the dust suction speed, reduces the need for manual entry into the equipment to clean the equipment, and improves the convenience of cleaning equipment.

[0018] Working principle: When fuel needs to be added to the boiler hopper 2, to avoid dust affecting the hygiene of the boiler room, the first hydraulic rod 7 drives the first push arm 8 to move. The first push arm 8, through the hinge shaft 9, drives the dust curtain 10 to rotate around the connecting shaft 11. The dust curtain 10 is made of stainless steel. Simultaneously, the second hydraulic rod 12, through the second push arm 13, drives the moving plate 14 to slide on the surface of the dust curtain 10, effectively lengthening the dust curtain 10. After fuel is added to the boiler hopper 2, dust will be generated. The first hydraulic rod 7 is then closed, and the first hydraulic rod 7 drives the dust curtain 10 to reset. The dust curtain 10 and the movable plate 14 seal the feed inlet of the boiler hopper 2, leaving only a narrow slit for air intake, to reduce the amount of dust escaping from the boiler hopper 2. A secondary fan 5 draws gas into the boiler hopper 2 through the suction pipe 4 and the gas collection hood 18, thereby transporting the dust through the exhaust pipe 6 to the interior of the steam boiler 1 for combustion and treatment, ensuring complete fuel combustion. The heat-resistant small water tank 3 is connected to the main soft water tank and utilizes temperature changes for water circulation. When fuel burns in the hopper, it effectively lowers the hopper temperature, while simultaneously heating the water in the small tank, effectively recovering a small portion of the heat energy. Furthermore, when a fuel fire occurs in the hopper, it can... Connect the water pipe to the water pipe connector 28, and spray the water from the heat-resistant small water tank 3 through the water pipe to the fire location to extinguish the fire and prevent a fire accident. When the secondary air fan 5 draws gas into the boiler hopper 2 through the gas collection hood 18, according to the narrow tube effect, the air volume remains constant. The smaller the air inlet diameter, the faster the air velocity. At this time, the arc arm 24 can be rotated, which drives the adjusting hood 26 to rotate around the pin 25, so that the two sets of adjusting hoods 26 are brought closer to each other to reduce the air inlet area and thus adjust the suction speed. Then, lock the locking pin 27 to keep the adjusting hood 26 in the current position. In this way, the gas in the boiler hopper 2 can be lifted. Dust is quickly drawn into the steam boiler 1. After long-term operation, dust will accumulate on the inner wall of the boiler hopper 2. At this time, the dust curtain 10 and the moving plate 14 are closed at the port of the boiler hopper 2. The cleaning liquid in the water storage tank 17 is pumped into the spray frame 23 through the flexible hose and the hollow shaft 22 and sprayed out. The servo motor 19 drives the worm gear 20 to rotate, and the worm gear 20 drives the hollow shaft 22 to rotate through the worm wheel 21. The adapter frame 16 provides movable support for the hollow shaft 22. The hollow shaft 22 drives the spray frame 23 to rotate and spray the cleaning liquid to clean the dust adhering to the inner wall of the boiler hopper 2 in an all-round way.

[0019] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any indirect modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A biomass steam furnace with energy saving and dust suppression in the feed hopper, comprising a steam boiler (1) and a boiler hopper (2), characterized in that: A boiler hopper (2) is provided on the side wall of the steam boiler (1). A heat-resistant small water tank (3) is symmetrically arranged on the side wall of the boiler hopper (2). A water pipe connector (28) is provided at the bottom of each heat-resistant small water tank (3). A secondary air fan (5) is provided outside the boiler hopper (2). A suction pipe (4) is provided at the top of the secondary air fan (5), and the suction pipe (4) extends into the interior of the boiler hopper (2). An air outlet pipe (6) is provided on the side wall of the secondary air fan (5), and the air outlet pipe (6) is connected to the steam boiler (1). A dust curtain (10) is provided at the opening of the boiler hopper (2). A connecting shaft (11) is provided at the top of the dust curtain (10), and the dust curtain (10) is connected to the steam boiler (1) via the connecting shaft (11). 11) Connected to the boiler hopper (2), a first hydraulic rod (7) is movably installed on the side wall of the boiler hopper (2) on one side of the dust curtain (10). A first push arm (8) is installed at the output end of the first hydraulic rod (7). A hinge shaft (9) is provided at one end of the first push arm (8) near the dust curtain (10). The first push arm (8) is movably connected to the dust curtain (10) through the hinge shaft (9). A moving plate (14) is slidably installed on the side wall of the dust curtain (10). Two sets of second hydraulic rods (12) are provided on the side wall of the dust curtain (10) on one side of the moving plate (14). A second push arm (13) is installed at the output end of each of the second hydraulic rods (12). The second push arm (13) is connected to the moving plate (14).

2. The energy-saving biomass-fired steam boiler with a feed hopper capable of suppressing dust according to claim 1, characterized in that: The inner wall of the boiler hopper (2) is provided with a gas collecting hood (18), and the gas collecting hood (18) is connected to the suction pipe (4).

3. The energy-saving biomass-fired steam boiler with a feed hopper capable of suppressing dust according to claim 2, characterized in that: An adjustment cover (26) is symmetrically arranged at the port position of the gas collection hood (18). A pin (25) is provided on the side of the adjustment cover (26) close to the gas collection hood (18), and the adjustment cover (26) is movably connected to the gas collection hood (18) through the pin (25).

4. The energy-saving biomass-fired steam boiler with a feed hopper capable of suppressing dust according to claim 3, characterized in that: The sidewalls of the adjustment cover (26) are provided with arc-shaped arms (24), and the surfaces of the arc-shaped arms (24) are provided with locking pins (27). The locking pins (27) are threadedly connected to the arc-shaped arms (24), and the locking pins (27) extend through the arc-shaped arms (24) into the interior of the gas collection cover (18).

5. An energy-saving biomass steam boiler with a dust-suppressing feed hopper according to claim 1, characterized in that: A drive seat (15) is provided at the center of the top of the boiler hopper (2), and a transfer frame (16) is provided on the top of the boiler hopper (2) on one side of the drive seat (15).

6. The energy-saving biomass-fired steam boiler with a feed hopper capable of suppressing dust according to claim 5, characterized in that: A water storage tank (17) is provided at the top of the boiler hopper (2) on one side of the adapter frame (16). A flexible hose is provided at the top of the water storage tank (17), and the flexible hose is connected to the adapter frame (16).

7. The energy-saving biomass-fired steam boiler with a feed hopper capable of suppressing dust according to claim 5, characterized in that: A servo motor (19) is provided on the side wall of the drive seat (15), and a worm gear (20) is installed at the output end of the servo motor (19).

8. The energy-saving biomass-fired steam boiler with a feed hopper capable of suppressing dust according to claim 7, characterized in that: A hollow shaft (22) is movably installed inside the drive seat (15) on one side of the worm (20), and the hollow shaft (22) extends into the interior of the adapter (16) and is movably connected to the adapter (16). A worm wheel (21) is fitted on the surface of the hollow shaft (22), and the worm wheel (21) meshes with the worm (20). A sprayer (23) is provided at the bottom end of the hollow shaft (22).

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