A high-temperature low-nitrogen combustion biomass furnace

Abstract

The present application belongs to the technical field of power plant boiler equipment, in particular to a high-temperature low-nitrogen combustion biomass furnace, which comprises a furnace body; a water inlet pipe is arranged on the side of the lower part of the furnace body away from the feeding hopper, the water inlet pipe penetrates through the furnace body and is rotationally connected with the furnace body; a group of water-cooled grates is communicated with one side of the water inlet pipe, and a drainage pipe is communicated with the end of the water-cooled grates away from the water inlet pipe; a group of lifting air cylinders is arranged between the drainage pipe and the bottom of the furnace body, and the two ends of the lifting air cylinders are respectively hinged to the drainage pipe and the bottom of the furnace body; the lifting air cylinders are connected with a high-pressure gas source through a pipeline and a controller; a slag chamber is arranged at the corresponding position of the bottom of the furnace body and the water inlet pipe, a water tank is arranged at the top of the furnace body, and the water tank is communicated with the water inlet pipe and the drainage pipe through a pipeline; the bottom of the furnace body is communicated with a blower through an air inlet pipe; the present application adjusts the size of the excess air by rotating the water-cooled grates, increases the decomposition of nitrogen oxides generated in fuel combustion, and reduces air pollution.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of power plant boiler equipment, and particularly relates to a high-temperature low-nitrogen combustion biomass furnace. BACKGROUND

[0002] A biomass boiler utilizes agricultural waste (such as straw, rice chaff, and firewood), and the production technology of biomass briquetting fuel is increasingly mature, and the production manufacturers are increasingly increasing, which lays a solid foundation for the promotion of the biomass industrial boiler. The biomass boiler has the advantages of wide fuel sources, low fuel cost, and low labor cost. With the continuous rise of the price of fossil fuels, the promotion of the biomass industrial boiler not only can become a good supplement and replacement of the fossil fuels, and has very good economic benefits, but also the ash produced by the biomass boiler can be used as high-quality fertilizer, which further promotes the on-site utilization of resources, and is very beneficial to environmental protection and resource recycling.

[0003] In the prior art, when the fuel is put into the furnace body for combustion, the fuel is distributed at the bottom of the furnace body, forming stratified combustion, which is insufficient and easy to produce tar. The light ash produced after the biomass combustion combines with the tar to form fly ash bonding, which is difficult to clean when the fly ash bonding blocks the heating surface of the boiler. Meanwhile, the excess air in the combustion chamber formed by the upper part of the water-cooled grate and the furnace body cannot be adjusted, which causes the nitrogen oxides produced in the fuel to be unable to be combusted and decomposed, and increases air pollution.

[0004] Therefore, the present application provides a novel high-temperature low-nitrogen combustion biomass furnace. SUMMARY

[0005] In order to make up for the deficiencies of the prior art, solve the problem that in the prior art, when the fuel is put into the furnace body for combustion, the fuel is distributed at the bottom of the furnace body, forming stratified combustion, which is insufficient and easy to produce tar, the light ash produced after the biomass combustion combines with the tar to form fly ash bonding, which is difficult to clean when the fly ash bonding blocks the heating surface of the boiler, and the excess air in the combustion chamber formed by the upper part of the water-cooled grate and the furnace body cannot be adjusted, which causes the nitrogen oxides produced in the fuel to be unable to be combusted and decomposed, and increases air pollution, the present application provides a high-temperature low-nitrogen combustion biomass furnace.

[0006] The technical scheme adopted by the present application to solve its technical problems is: the high-temperature low-nitrogen combustion biomass furnace comprises a furnace body; a feeding hopper is arranged on one side of the furnace body, a top cover is arranged on the top of the feeding hopper, the top cover is hinged to one side of the furnace body, and the top cover is in sealing connection with the feeding hopper after being rotated; a group of partition plates are uniformly arranged in the furnace body and close to the upper part, and independent air chambers are formed between adjacent partition plates; exhaust holes are formed in the upper part of the independent air chambers, and an exhaust pipe is in communication with the exhaust holes and the outside of the furnace body; a water inlet pipe is arranged on one side of the lower part of the furnace body and away from the feeding hopper, the water inlet pipe penetrates through the furnace body and is rotationally connected with the furnace body; a group of water-cooled grates are in communication with one side of the water inlet pipe, and a drain pipe is in communication with one end of the water-cooled grates away from the water inlet pipe; an arc-shaped first sliding groove is formed in the corresponding position of the inner wall of the furnace body and the drain pipe, and the drain pipe is in sliding connection with the first sliding groove; a group of lifting cylinders are arranged between the drain pipe and the bottom of the furnace body, and the two ends of the lifting cylinders are hinged to the drain pipe and the bottom of the furnace body respectively; the lifting cylinders are connected with a high-pressure gas source through a pipeline and a controller; a slag chamber is arranged at the corresponding position of the bottom of the furnace body and the water inlet pipe, a water tank is arranged at the top of the furnace body, and the water tank is in communication with the water inlet pipe and the drain pipe through a pipeline; the bottom of the furnace body is in communication with a blower through an air inlet pipe; when working, in the prior art, fuel is put into the furnace body for combustion, the fuel is distributed at the bottom of the furnace body, stratified combustion is formed, combustion is insufficient, tar is easily produced, light ash produced after biomass combustion combines with tar to form fly ash bonding, it is difficult to clean the boiler heating surface when the boiler heating surface is blocked, the excess air in the combustion chamber formed above the water-cooled grate and the furnace body cannot be adjusted, nitrogen oxides produced in the fuel cannot be combusted and decomposed, air pollution is increased, at this time, the water inlet pipe is rotationally connected with the furnace body, the air intake of the lifting cylinder is controlled, the extension and retraction amount of the piston rod of the lifting cylinder is controlled, the drain pipe is pushed, and finally the water-cooled grate is driven to rotate, so as to adjust the volume of the combustion chamber above the water-cooled grate, adjust the size of the excess air, increase the decomposition of nitrogen oxides produced in the fuel combustion, reduce air pollution, the water inlet pipe and the drain pipe are in communication with the water tank through a pipeline, the water temperature in the inclined water-cooled grate is increased to form a thermal convection, the water in the water tank is continuously circulated between the water inlet pipe, the cooling grate and the drain pipe, the temperature of the cooling grate is reduced, the high-temperature oxidation corrosion of the cooling grate is reduced, the service life of the cooling grate is prolonged, the water-cooled grate arranged in an inclined manner can be flexibly adjusted in angle according to the flowability, calorific value and volatile matter of different fuels, the service life of the grate is increased, and the maintenance cost of the grate is reduced.

[0007] Preferably, the water-cooled grate is provided with a set of baffles, the water-cooled grate penetrates through the baffles and is in sliding connection with the baffles; the bottom of the water inlet pipe is fixedly connected with a plurality of air cylinders through a No. 1 support, the plurality of air cylinders are connected with a high-pressure gas source through a pipeline and a controller; the bottom of the baffle close to the water inlet pipe is fixedly connected with a No. 2 support, the No. 2 support is fixedly connected with the piston rod of the plurality of air cylinders; when the fuel is put into the furnace through the feeding hopper, the fuel is uniformly distributed on the water-cooled grate for combustion, at this time, the air inlet amount of the plurality of air cylinders is controlled through the controller, then the No. 2 support is pushed by the plurality of air cylinders, then the baffle is pushed upward, the distance between adjacent baffles is reduced, the fuel between adjacent baffles is extruded, the density of the loose material in the furnace is increased again, the excess oxygen coefficient can be controlled, the flame can be effectively prevented from returning to the fuel bin during shutdown or operation, the air inlet amount of the water-cooled grate is controlled, the reduction efficiency of nitrogen oxides is increased, and the waste gas pollution is further reduced.

[0008] Preferably, the feeding hopper is rotatably connected with a No. 1 shaft, the No. 1 shaft extends into the furnace body; the outer portion of the feeding hopper is fixedly connected with a motor at a position corresponding to the No. 1 shaft, the output shaft of the motor penetrates through the feeding hopper and is fixedly connected with the No. 1 shaft; a screw conveyor is fixedly connected with the outer periphery of the No. 1 shaft, a set of cutters are uniformly distributed on the outer edge of the screw conveyor and correspond to the position of the feeding hopper; the fuel is put into the feeding hopper after being baled, then the top cover is closed, the No. 1 shaft is rotated by the motor, then the screw conveyor and the cutters are rotated, the fuel is cut and transported into the furnace body by the screw conveyor, then the uniform dispersion degree of the fuel is increased, the contact area between the fuel and air is further increased, and the combustion efficiency of the fuel is increased.

[0009] Preferably, a set of insertion rods are fixedly connected with one side of the baffle, insertion holes are formed in the corresponding positions of adjacent baffles and clearance fit with the insertion rods; when the baffle slides along the water-cooled grate, the insertion rods are inserted into the loose fuel, then the fuel is fixed, then the baffle continues to slide and compacts the fuel, the fuel overflow during the extrusion process of the baffle is reduced, then the density of the fuel is further controlled, the excess oxygen coefficient is controlled, the air excess amount in the furnace is controlled, the combustion and decomposition of nitrogen oxides generated in the fuel is increased, and the waste gas pollution is further reduced.

[0010] Preferably, a spring is sleeved with the end of the insertion rod close to the baffle, the spring is fixedly connected with the baffle; the thickness of the upper portion of the baffle is continuously reduced; the adjacent baffles are extruded by the spring, the crushing effect of the slag is increased, then the discharging efficiency of the slag is further increased, the slag is prevented from blocking the water-cooled grate, then the air inlet amount of the water-cooled grate is ensured, and the combustion efficiency of the fuel is ensured; because the thickness of the upper portion of the baffle is continuously reduced, a tapered portion is formed on the upper portion of the adjacent baffles, the effect of extruding and crushing the slag by the baffle is increased, and the slag agglomeration blocking the water-cooled grate is further reduced.

[0011] Preferably, a plurality of slots are formed in the middle of the insertion rod along the axial direction of the insertion rod, and a limiting block is arranged in the slots; the limiting block controls the minimum distance between adjacent baffles to prevent the dye from being difficult to burn after excessive compression, thereby ensuring the oxygen supply efficiency of the fuel and further increasing the combustion efficiency of the dye.

[0012] Preferably, a second chute is formed at the bottom of the slot, and the second chute is arranged side by side; the second chute penetrates the insertion rod, and a sliding rod is slidably connected in the second chute; a magnetic block is arranged at the position corresponding to the slot of the sliding rod; a wedge-shaped groove is formed at the side of the magnetic block close to the slot; the limiting block is made of ferromagnetic material; the wedge-shaped groove ejects the limiting block after the sliding rod slides; a rack is fixed to the side of the insertion rod close to the plate; a second shaft is arranged in the cavity of the baffle; a rotating hole is formed on the baffle at the position corresponding to the second shaft; the second shaft penetrates the rotating hole and extends to the outside of the baffle, and the second shaft is slidably connected with the rotating hole; a gear is fixed to one end of the second shaft in the cavity, and the gear is meshed with the rack; by pulling the second shaft, the meshing state of the gear and different racks can be switched; then by driving the second shaft to rotate, the rack and the sliding rod at the corresponding position are driven to slide, the wedge-shaped groove pushes out the limiting block at the corresponding position, and the minimum distance between the adjacent baffles is adjusted, thereby adjusting the different compression densities of the fuel and further increasing the combustion efficiency of different fuels.

[0013] Preferably, the spring is a high-temperature-resistant spring, and the inner diameter of the spring is greater than 1.5 times the diameter of the insertion rod.

[0014] The beneficial effects of the present application are as follows:

[0015] 1. The high-temperature low-nitrogen combustion biomass furnace adjusts the volume of the combustion chamber at the upper part of the water-cooled grate by adjusting the volume of the water-cooled grate, thereby adjusting the size of the excess air, and further increasing the decomposition of nitrogen oxides generated in the fuel combustion, thereby reducing air pollution.

[0016] 2. The high-temperature low-nitrogen combustion biomass furnace pushes the second support by the multi-stage cylinder, thereby pushing the baffle to slide upwards, reducing the distance between the adjacent baffles, thereby extruding the fuel between the adjacent baffles, thereby increasing the density of the loose material in the furnace body, controlling the excess oxygen coefficient, effectively preventing the flame from backfiring into the fuel bin during shutdown or operation, and controlling the air intake of the water-cooled grate, increasing the reduction efficiency of nitrogen oxides, and further reducing waste gas pollution.

[0017] 3. The high-temperature low-nitrogen combustion biomass furnace according to the application, by pulling the second shaft, the meshing state of the gear and the different racks can be switched, then by driving the second shaft to rotate, the rack and the sliding rod at the corresponding position are driven to slide, the wedge-shaped groove pushes out the limiting block at the corresponding position, the minimum distance between the adjacent baffles is adjusted, the compression density of the fuel is adjusted, and the combustion efficiency of different fuels is further increased. BRIEF DESCRIPTION OF DRAWINGS

[0018] The application will be further described below with reference to the drawings.

[0019] Figure 1 is a perspective view of the application;

[0020] Figure 2 is a sectional view of the application;

[0021] Figure 3 is Figure 1 is an enlarged view of A in FIG. 1;

[0022] Figure 4 is Figure 2 is an enlarged view of B in FIG. 1;

[0023] Figure 5 is Figure 4 is a sectional view of C-C in FIG. 1;

[0024] Figure 6 is Figure 4 is an enlarged view of D in FIG. 1;

[0025] Figure 7 is Figure 4 is an enlarged view of E in FIG. 1;

[0026] In the figure: furnace body 1, feed hopper 11, top cover 12, partition 13, independent air chamber 14, exhaust hole 15, exhaust pipe 16, water inlet pipe 2, water-cooled grate 21, drain pipe 22, No. 1 sliding chute 23, lifting cylinder 24, slag chamber 17, water tank 18, air inlet pipe 19, baffle 3, No. 1 support 31, multi-stage cylinder 32, No. 2 support 33, No. 1 shaft 34, motor 35, auger 36, cutter 37, insertion rod 4, insertion hole 41, insertion groove 42, limiting block 43, No. 2 sliding chute 44, sliding rod 45, magnetic block 46, wedge-shaped groove 47, spring 48, rack 5, cavity 51, No. 2 shaft 52, gear 53. DETAILED DESCRIPTION

[0027] In order to make the technical means, creative features, purposes and effects realized by the application easy to understand, the application will be further described below in combination with specific embodiments.

[0028] For example, Figures 1 to 7As shown, the high-temperature low-nitrogen combustion biomass furnace comprises a furnace body 1; one side of the furnace body 1 is provided with a feeding hopper 11, the top of the feeding hopper 11 is provided with a top cover 12, the top cover 12 is hinged to one side of the furnace body 1, and the top cover 12 is in sealing connection with the feeding hopper 11 after being rotated; a group of partition plates 13 are uniformly arranged in the furnace body 1 close to the upper position, and independent air chambers 14 are formed between adjacent partition plates 13; the upper part of the independent air chamber 14 is provided with an exhaust hole 15, and the outside of the furnace body 1 is in communication with the exhaust hole 15 at the corresponding position; the lower part of the furnace body 1 is provided with a water inlet pipe 2 away from one side of the feeding hopper 11, the water inlet pipe 2 penetrates through the furnace body 1 and is in rotary connection with the furnace body 1; one side of the water inlet pipe 2 is in communication with a group of water-cooled grates 21, and one end of the water-cooled grates 21 away from the water inlet pipe 2 is in communication with a drain pipe 22; an arc-shaped first chute 23 is formed in the corresponding position of the inner wall of the furnace body 1 and the drain pipe 22, and the drain pipe 22 is in sliding connection with the first chute 23; a group of lifting cylinders 24 are arranged between the drain pipe 22 and the bottom of the furnace body 1, and the two ends of the lifting cylinders 24 are respectively hinged to the drain pipe 22 and the bottom of the furnace body 1; the lifting cylinders 24 are connected with a high-pressure gas source through pipelines and a controller; the bottom of the furnace body 1 is provided with a slag chamber 17 at the corresponding position of the water inlet pipe 2, and the top of the furnace body 1 is provided with a water tank 18, which is in communication with the water inlet pipe 2 and the drain pipe 22 through pipelines; the bottom of the furnace body 1 is in communication with a blower through an air inlet pipe 19; when the fuel is put into the furnace body 1 for combustion in the prior art, the fuel is distributed at the bottom of the furnace body 1, forming stratified combustion, which is not sufficient and easy to produce tar, the light ash produced after the combustion of biomass combines with the tar to form fly ash bonding, which is difficult to clean when the boiler heating surface is blocked, and the excess air in the combustion chamber formed above the water-cooled grates 21 and the furnace body 1 cannot be adjusted, which causes the nitrogen oxides produced in the fuel to be unable to be decomposed, increasing air pollution, at this time, the water inlet pipe 2 is in rotary connection with the furnace body 1, the air intake of the lifting cylinders 24 is controlled, the extension amount of the piston rod of the lifting cylinders 24 is controlled, the drain pipe 22 is pushed, and finally the water-cooled grates 21 are driven to rotate, so as to adjust the volume of the combustion chamber above the water-cooled grates 21, adjust the size of the excess air, increase the decomposition of the nitrogen oxides produced in the fuel combustion, reduce air pollution, and at the same time, the water inlet pipe 2 and the drain pipe 22 are in communication with the water tank 18 through pipelines, so that when the water temperature in the inclined water-cooled grates 21 rises, a thermal convection is formed, the water in the water tank 18 is continuously circulated between the water inlet pipe 2, the cooling grate and the drain pipe 22, thereby reducing the temperature of the cooling grate, reducing the high-temperature oxidation corrosion of the cooling grate, prolonging the service life of the cooling grate, and the inclined water-cooled grates 21 can be flexibly adjusted according to the flowability, calorific value and volatile matter of different fuels, thereby prolonging the service life of the grates and reducing the maintenance cost of the grates.

[0029] As an embodiment of the present application, the water-cooled grate 21 is provided with a set of baffles 3, the water-cooled grate 21 penetrates through the baffles 3 and is in sliding connection with the baffles 3; the bottom of the water inlet pipe 2 is fixedly connected with a plurality of multi-stage air cylinders 32 through a No. 1 support 31, the multi-stage air cylinders 32 are connected with a high-pressure gas source through pipelines and a controller; the bottom of the baffle 3 close to the water inlet pipe 2 is fixedly connected with a No. 2 support 33, the No. 2 support 33 is fixedly connected with the piston rod of the multi-stage air cylinder 32; when the fuel is put into the furnace body 1 through the feeding hopper 11, the fuel is uniformly distributed on the water-cooled grate 21 for combustion, at this time, the air intake amount of the multi-stage air cylinder 32 is controlled through the controller, and then the No. 2 support 33 is pushed by the multi-stage air cylinder 32, and then the baffle 3 is pushed to slide upward, so that the distance between adjacent baffles 3 is reduced, and then the fuel between adjacent baffles 3 is extruded, and then the bulk density of the loose material in the furnace body 1 is increased again, the excess oxygen coefficient can be controlled, the flame can be effectively prevented from returning to the fuel bin during shutdown or operation, the air intake amount of the water-cooled grate 21 is controlled, the reduction efficiency of nitrogen oxides is increased, and the waste gas pollution is further reduced.

[0030] As an embodiment of the present application, the feeding hopper 11 is rotatably connected with a No. 1 shaft 34, the No. 1 shaft 34 extends into the inside of the furnace body 1; the outside of the feeding hopper 11 is fixedly connected with a motor 35 at a position corresponding to the No. 1 shaft 34, the output shaft of the motor 35 penetrates through the feeding hopper 11 and is fixedly connected with the No. 1 shaft 34; a worm 36 is fixedly connected to the outer periphery of the No. 1 shaft 34, a set of cutters 37 are uniformly distributed on the outer edge of the worm 36 and correspond to the position of the feeding hopper 11; after the fuel is baled, it is put into the feeding hopper 11, then the top cover 12 is closed, the No. 1 shaft 34 is rotated by the motor 35, and then the worm 36 and the cutter 37 are rotated, the fuel is cut and transported into the inside of the furnace body 1 by the worm 36, and then the uniform dispersion degree of the fuel is increased, the contact area between the fuel and the air is further increased, and the combustion efficiency of the fuel is increased.

[0031] As an embodiment of the present application, the baffle 3 is fixedly connected with a set of insertion rods 4 on one side, a plurality of insertion holes 41 are formed on the adjacent baffle 3 and correspond to the insertion rods 4, and the insertion holes 41 are in clearance fit with the insertion rods 4; when the baffle 3 slides along the water-cooled grate 21, the insertion rods 4 are inserted into the loose fuel, and then the fuel is fixed, then the baffle 3 continues to slide and compacts the fuel, so that the fuel overflowed upward during the extrusion process of the baffle 3 is reduced, and then the density of the fuel is further controlled, the excess oxygen coefficient is controlled, the air excess amount in the furnace body 1 is controlled, the combustion and decomposition of the nitrogen oxides generated in the fuel are increased, and the waste gas pollution is further reduced.

[0032] As one of the embodiments of the present application, the one end of the inserting rod 4 close to the baffle 3 is sleeved with a spring 48, the spring 48 is fixedly connected with the baffle 3; the upper section thickness of the baffle 3 is continuously reduced; the spring 48 contacts the adjacent baffle 3 and is extruded, the slag crushing effect is increased, the slag discharging efficiency is further increased, the slag is reduced to block the water-cooled grate 21, the air intake of the water-cooled grate 21 is ensured, and the fuel combustion efficiency is ensured; due to the continuously reduced upper section thickness of the baffle 3, the upper part of the adjacent baffle 3 forms a tapered part, the effect of extruding and crushing the slag of the baffle 3 is increased, and the slag blocking the water-cooled grate 21 is further reduced.

[0033] As one of the embodiments of the present application, a group of insertion grooves 42 are arranged in the inserting rod 4 along the axial direction of the inserting rod 4, and a limiting block 43 is arranged in the insertion groove 42; the minimum distance between the adjacent baffles 3 is controlled by the limiting block 43, the fuel is prevented from being difficult to burn after excessive compression, the air supply efficiency of the fuel is ensured, and the fuel combustion efficiency is further increased.

[0034] As one of the embodiments of the present application, a second chute 44 is arranged at the bottom of the insertion groove 42, and the second chute 44 is arranged in parallel; the second chute 44 penetrates the inserting rod 4, a sliding rod 45 is slidably connected in the second chute 44, a magnetic block 46 is arranged at the corresponding position of the insertion groove 42 of the sliding rod 45, and a wedge-shaped groove 47 is arranged at the side close to the insertion groove 42 of the magnetic block 46; the limiting block 43 is made of ferromagnetic material, and the wedge-shaped groove 47 ejects the limiting block 43 after the sliding rod 45 slides; the inserting rod 4 is fixedly connected with a rack 5 at the side close to the plate, a second shaft 52 is arranged in a cavity 51 arranged in the baffle 3, a rotating hole is arranged at the corresponding position of the second shaft 52 on the baffle 3, the second shaft 52 penetrates the rotating hole and extends to the outside of the baffle 3, and the second shaft 52 is slidably connected with the rotating hole; a gear 53 is fixedly connected to one end of the second shaft 52 in the cavity 51, and the gear 53 is meshed with the rack 5; by pulling the second shaft 52, the meshing state of the gear 53 and different racks 5 can be switched, then the second shaft 52 is driven to rotate, thereby driving the rack 5 and the sliding rod 45 at the corresponding position to slide, driving the wedge-shaped groove 47 to push out the limiting block 43 at the corresponding position, thereby adjusting the minimum distance between the adjacent baffles 3, adjusting the different compression densities of the fuel, and further increasing the combustion efficiency of different fuels.

[0035] As one of the embodiments of the present application, the spring 48 is a high-temperature-resistant spring, and the inner diameter of the spring 48 is greater than one and a half times of the diameter of the inserting rod 4.

[0036] In operation, the prior art puts fuel into the furnace body 1 for combustion, the fuel is distributed at the bottom of the furnace body 1, forming stratified combustion, which is not sufficient, and is easy to produce tar, the light ash produced by the biomass combustion combines with the tar to form fly ash bonding, which is difficult to clean when the fly ash blocks the heating surface of the boiler, and the excess air in the combustion chamber formed by the water-cooled grate 21 and the furnace body 1 cannot be adjusted, which causes the nitrogen oxides produced in the fuel to be unable to be burned and decomposed, increasing air pollution, at this time, the water inlet pipe 2 is rotationally connected with the furnace body 1, the air intake of the lifting cylinder 24 is controlled, the extension amount of the piston rod of the lifting cylinder 24 is controlled, the water outlet pipe 22 is driven, and the water-cooled grate 21 is finally driven to rotate, so as to adjust the volume of the combustion chamber at the upper part of the water-cooled grate 21, adjust the size of the excess air, increase the decomposition of the nitrogen oxides produced in the fuel combustion, reduce air pollution, and because the water inlet pipe 2 and the water outlet pipe 22 are communicated with the water tank 18 through pipelines, the hot convection is formed after the water temperature in the inclined water-cooled grate 21 is increased, the water in the water tank 18 is continuously circulated between the water inlet pipe 2, the cooling grate and the water outlet pipe 22, the temperature of the cooling grate is reduced, the high-temperature oxidation corrosion of the cooling grate is reduced, the service life of the cooling grate is prolonged, the water-cooled grate 21 arranged obliquely can be flexibly adjusted in angle according to the flowability, calorific value and volatile matter of different fuels, the service life of the grate is increased, and the maintenance cost of the grate is reduced; when the fuel is put into the furnace body 1 through the feeding hopper 11, the fuel is uniformly distributed on the water-cooled grate 21 for combustion, at this time, the air intake of the multi-stage cylinder 32 is controlled by the controller, the second support 33 is driven by the multi-stage cylinder 32, the baffle 3 is driven to slide upward, the distance between the adjacent baffles 3 is reduced, the fuel between the adjacent baffles 3 is extruded, the density of the loose material in the furnace body 1 is increased again, the excess oxygen coefficient can be controlled, the flame is effectively prevented from returning to the fuel bin during shutdown or operation, the air intake of the water-cooled grate 21 is controlled, the reduction efficiency of the nitrogen oxides is increased, and the waste gas pollution is further reduced; after the fuel is put into the feeding hopper 11 after being baled, the top cover 12 is closed, the first shaft 34 is driven to rotate by the motor 35, the auger 36 and the cutter 37 are driven to rotate, the fuel is cut and transported to the inside of the furnace body 1 by the auger 36, the uniform dispersion degree of the fuel is increased, the contact area between the fuel and air is further increased, and the combustion efficiency of the fuel is increased; when the baffle 3 slides along the water-cooled grate 21, the plug rod 4 is inserted into the loose fuel, the fuel is fixed, the baffle 3 continues to slide and compacts the fuel, the fuel is prevented from overflowing upward during the extrusion process of the baffle 3, the density of the fuel is further controlled, the excess oxygen coefficient is controlled, the excess air in the furnace body 1 is controlled, the combustion and decomposition of the nitrogen oxides produced in the fuel are increased, and the waste gas pollution is further reduced; the spring 48 contacts the adjacent baffles 3 and is extruded, the crushing effect of the slag is increased, the discharge efficiency of the slag is further increased, the slag is prevented from blocking the water-cooled grate 21, the air intake of the water-cooled grate 21 is ensured, and the combustion efficiency of the fuel is ensured.Due to the upper section thickness of the baffle 3 is continuously reduced; so that the upper part of the adjacent baffle 3 forms a tapered part, increases the effect of the baffle 3 extruding the slag, further reduces the slag clinker blocking the water-cooled grate 21; through the limiting block 43 control the minimum distance between adjacent baffles 3, prevent the dye from excessive compression after burning difficult, and further ensure the ventilation oxygen efficiency of the fuel, further increase the combustion efficiency of the dye; by pulling the second shaft 52, the meshing state of the gear 53 and different racks 5 can be switched, then by driving the second shaft 52 to rotate, in turn driving the corresponding position of the rack 5 and the sliding rod 45 to slide, driving the wedge-shaped groove 47 to push out the corresponding position of the limiting block 43, in turn adjusting the different minimum distances between adjacent baffles 3, in turn adjusting the different compression densities of the fuel, further increasing the combustion efficiency of different fuels.

[0037] The above front, rear, left, right, top and bottom are based on the drawings of the specification Figure 1 As the standard, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0038] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as a limitation on the scope of protection of the present application.

[0039] The basic principles, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above examples, the above examples and descriptions in the specification are only to illustrate the principles of the present application, without departing from the spirit and scope of the present application, the present application can have various changes and improvements, these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A high temperature low nitrogen combustion biomass stove, characterized by: The utility model provides a water cooling furnace, including furnace body (1), one side of furnace body (1) is equipped with feeding hopper (11), and the top of feeding hopper (11) is equipped with top cover (12), and the one side of top cover (12) is articulated with furnace body (1), and top cover (12) is sealedly connected with feeding hopper (11) after rotating, the inside of furnace body (1) is uniformly distributed with 7 baffle (13) near upper portion, and 8 independent air chamber (14) are formed between adjacent baffle (13), the upper portion of independent air chamber (14) is provided with exhaust hole (15), and the outside of furnace body (1) is communicated with exhaust pipe (16) at the position corresponding with exhaust hole (15), the side of furnace body (1) away from feeding hopper (11) is equipped with water inlet pipe (2), and water inlet pipe (2) penetrates furnace body (1) and is rotatably connected with furnace body (1), one side of water inlet pipe (2) is communicated with a group of water cooled grate (21), and the end away from water inlet pipe (2) of water cooled grate (21) is communicated with drain pipe (22), the inner wall of furnace body (1) is provided with arc one-way chute (23) at the position corresponding with drain pipe (22), and drain pipe (22) is slidably connected with one-way chute (23), a group of lifting cylinders (24) are arranged between drain pipe (22) and the bottom of furnace body (1), and the two ends of lifting cylinders (24) are hingedly connected with drain pipe (22) and the bottom of furnace body (1) respectively, lifting cylinders (24) are connected with high pressure gas source through pipeline and controller, the bottom of furnace body (1) is provided with cinder chamber (17) at the position corresponding with water inlet pipe (2), and the top of furnace body (1) is provided with water tank (18), and water tank (18) is communicated with water inlet pipe (2) and drain pipe (22) through pipeline, the bottom of furnace body (1) is communicated with air blower through air inlet pipe (19), a group of baffles (3) are arranged on water cooled grate (21), and water cooled grate (21) penetrates baffle (3) and is slidably connected with baffle (3), the bottom of water inlet pipe (2) is fixedly connected with multistage cylinder (32) through first support (31), and multistage cylinder (32) is connected with high pressure gas source through pipeline and controller, the bottom of baffle (3) close to water inlet pipe (2) is fixedly connected with second support (33), and the piston rod of multistage cylinder (32) is fixedly connected with second support (33), a group of inserting rods (4) are fixedly connected on one side of baffle (3), and the position corresponding with inserting rod (4) is provided with insertion hole (41) on adjacent baffle (3), and insertion hole (41) is clearance fit with inserting rod (4).

2. A high temperature low nitrogen combustion biomass furnace according to claim 1, characterized in that: The feeding hopper (11) is rotatably connected with a first shaft (34) extending into the furnace body (1); the feeding hopper (11) is fixedly connected with a motor (35) at a position corresponding to the first shaft (34) outside, the output shaft of the motor (35) penetrates the feeding hopper (11) and is fixedly connected with the first shaft (34); the first shaft (34) is fixedly connected with an auger (36) on the outer periphery, and a group of cutters (37) are uniformly arranged on the outer edge of the auger (36) corresponding to the feeding hopper (11).

3. The high temperature low nitrogen combustion biomass furnace according to claim 1, characterized in that: The end of the insertion rod (4) close to the baffle (3) is sleeved with a spring (48), and the spring (48) is fixedly connected with the baffle (3); the thickness of the upper section of the baffle (3) continuously decreases.

4. A high temperature low nitrogen combustion biomass furnace according to claim 3, characterized in that: A group of insertion grooves (42) are formed in the middle of the insertion rod (4) along the axial direction of the insertion rod (4), and a limiting block (43) is arranged in the insertion groove (42).

5. A high temperature low nitrogen combustion biomass furnace according to claim 4, characterised in that: A second chute (44) is formed in the bottom of the insertion groove (42), and the second chutes (44) are arranged side by side; the second chute (44) penetrates the insertion rod (4), and a sliding rod (45) is slidably connected in the second chute (44); a magnetic block (46) is arranged at a position corresponding to the insertion groove (42) of the sliding rod (45), and a wedge-shaped groove (47) is formed in the side of the magnetic block (46) close to the insertion groove (42); the limiting block (43) is made of ferromagnetic material, and the wedge-shaped groove (47) ejects the limiting block (43) after the sliding rod (45) slides; the insertion rod (4) is fixedly connected with a rack (5) close to one side of the plate, a second shaft (52) is arranged in a cavity (51) formed in the baffle (3), a rotating hole is formed in the baffle (3) at a position corresponding to the second shaft (52), the second shaft (52) penetrates the rotating hole and extends to the outside of the baffle (3), and the second shaft (52) is slidably connected with the rotating hole; a gear (53) is fixedly connected to one end of the second shaft (52) in the cavity (51), and the gear (53) and the rack (5) are meshed with each other.

6. A high temperature low nitrogen combustion biomass furnace according to claim 5, characterised in that: The spring (48) is a high-temperature-resistant spring, and the inner diameter of the spring (48) is greater than 1.5 times the diameter of the insertion rod (4).

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