Combustion device of biomass gasifier

Abstract

The utility model discloses a combustion device of a biomass gasification furnace, which belongs to the technical field of biomass gasification furnaces and comprises a furnace body, an ash discharge cylinder is arranged on the side of the bottom end of the furnace body, an arc-bottom ash deposition groove is arranged at the bottom of an inner cavity of the furnace body, and an ash falling pipe is fixedly sleeved at the bottom of one end of the ash discharge cylinder. According to the waste residue ash collecting device, waste residue ash is filtered through the supporting pore plate, falling waste residue ash is received through the arc-bottom ash deposition groove, the first motor is used for driving the spiral conveying rod to rotate so that the waste residue ash in the arc-bottom ash deposition groove can be discharged out of the ash discharging barrel and the ash falling pipe, and the waste residue ash is collected through the ash receiving box in the ash deposition box; the function of automatically discharging waste residue ash is achieved, and when the waste residue ash in the ash receiving box needs to be cleaned, the upper portion of the inner cavity of the ash accumulating box is blocked through the drawing sealing plate, so that operation of the furnace body does not need to be stopped when the ash receiving box is drawn out.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of biomass gasification furnace, more particularly to a kind of combustion device of biomass gasification furnace. BACKGROUND

[0002] Biomass gasification is the hot chemical reaction that combustible part in biomass fuel is converted into combustible gas under high temperature condition using oxygen in air or oxygen-containing crop gasification agent, and biomass gasification technology plays a positive role in processing a large amount of crop waste, reducing environmental pollution and improving people's living standards.

[0003] After searching, the utility model patent with publication number CN212388004U discloses a kind of combustion device of biomass gasification furnace, including gasification furnace body, the left side of the gasification furnace body is processed with two through ports, the bottom of the gasification furnace body Four corners are all fixed with base, the bottom of the drawer and the top of the bottom drawer are all fixed with two racks, the top rack and the bottom rack are meshed and connected with multiple gears, multiple gears are rotatably connected with the inner wall of the gasification furnace body by connecting shaft Left and right sides;The combustion device of the biomass gasification furnace, after a certain degree of storage of the ash formed after the biomass combustion inside the drawer of top or bottom, the drawer without ash inside top or bottom can be moved into gasification furnace body, can be through the butt joint of inclined block and top or bottom pipeline, top or bottom drawer is fed, and top or bottom drawer is fed. But the above-mentioned patent still has the following deficiencies: manual drawer is pulled out to clean ash, and ash in drawer is not convenient to take out, and practicality is poor;In addition, there is a certain amount of heat in ash, and unreasonable utilization of residual heat in ash can cause energy waste, therefore we propose a kind of combustion device of biomass gasification furnace. UTILITY MODEL CONTENT

[0004] In view of the problems in the prior art, the utility model aims to provide a kind of combustion device of biomass gasification furnace.

[0005] To solve the above problems, the utility model adopts the following technical solutions:

[0006] A combustion device for a biomass gasification furnace includes a furnace body, an ash discharge cylinder on the side of the bottom end of the furnace body, an arc-bottomed ash collection trough at the bottom of the furnace body cavity, an ash drop pipe fixedly sleeved at the bottom of one end of the ash discharge cylinder, an ash collection box fixedly sleeved at the bottom end of the ash drop pipe, a sealing mechanism on the side of the ash collection box, an ash receiving box sleeved at the bottom of the ash collection box cavity, a handle fixedly connected to one side of the ash receiving box extending to the outside of the ash collection box, a heat exchange mechanism on the outside of the ash discharge cylinder, a support mechanism in the furnace body cavity, a first motor fixedly installed at the end of the ash discharge cylinder, the output shaft of the first motor extending to the inner cavity of the ash discharge cylinder and fixedly connected to a spiral conveying rod, and the end of the spiral conveying rod extending to the inner cavity of the arc-bottomed ash collection trough.

[0007] In a preferred embodiment of this utility model, the support mechanism includes a support tube fixedly sleeved in the inner cavity of the furnace body and a support perforated plate fixedly sleeved in the inner cavity of the furnace body. A transmission box is provided in the middle of the support tube. One end of the support tube extends to the outside of the furnace body and is fixedly installed with a second motor. The output shaft of the second motor extends to the inner cavity of the support tube and is fixedly connected with a transmission rod. The end of the transmission rod extends to the inner cavity of the transmission box and is fixedly sleeved with a first bevel gear. A rotating tube is rotatably connected to the top of the transmission box. The bottom end of the rotating tube extends to the inner cavity of the transmission box and is fixedly sleeved with a second bevel gear. The second bevel gear and the first bevel gear mesh with each other. The top end of the rotating tube extends to the top of the transmission box and is fixedly connected with a gas distribution box. An air jet hole is opened on the top surface of the gas distribution box. A scraper is fixedly connected to the side of the gas distribution box. The bottom surface of the scraper is in contact with the top surface of the support perforated plate.

[0008] As a preferred embodiment of this utility model, the heat exchange mechanism includes an air guide box fixedly sleeved on the outside of the ash discharge cylinder. A spiral air guide vane is fixedly connected to the inner wall of the air guide box. The inner side of the spiral air guide vane is connected to the outer side of the ash discharge cylinder. An exhaust fan is fixedly installed on the side of one end of the air guide box. The output end of the exhaust fan extends into the inner cavity of the air guide box. An air inlet pipe is fixedly sleeved on the top of the other end of the air guide box. The end of the air inlet pipe is fixedly sleeved into the inner cavity of the support pipe.

[0009] As a preferred embodiment of the present invention, the sealing mechanism includes a pull-out groove opened on the side of the ash collection box, a pull-out sealing plate is movably sleeved in the inner cavity of the pull-out groove, a limit block is provided at the bottom of one end of the pull-out sealing plate, and the other end of the pull-out sealing plate extends to the outside of the ash collection box and is fixedly connected to a pull plate.

[0010] As a preferred embodiment of this utility model, the side of the spiral conveyor rod is respectively attached to the inner wall of the ash discharge cylinder and the inner wall of the bottom of the arc-bottom ash accumulation trough.

[0011] As a preferred scheme of the utility model, the bottom surface of the gas distribution box and the top surface of the transmission box are attached.

[0012] Compared with the prior art, the utility model has the advantages that:

[0013] (1) In the utility model, the support hole plate is used to filter the waste slag ash, the arc bottom dust collecting groove is used to catch the falling waste slag ash, the first motor is used to drive the spiral conveying rod to rotate so that the waste slag ash in the arc bottom dust collecting groove is discharged from the ash discharge cylinder and the ash falling pipe, the ash receiving box in the dust collecting box is used to collect the waste slag ash, the function of automatically discharging the waste slag ash is realized, when it is necessary to clean the waste slag ash in the ash receiving box, the upper part of the dust collecting box inner cavity is sealed by the pull-out sealing plate, so that the furnace body does not need to be stopped when the ash receiving box is pulled out, and the utility is good.

[0014] (2) In the utility model, through the cooperation of the air guide box, the spiral air guide blade, the air extractor and the air inlet pipe, the air extractor is used to make the external air enter the air guide box, the air in the air guide box is spirally guided by the spiral air guide blade, and the residual heat of the waste slag ash in the ash discharge cylinder is used to preheat the air in the air guide box, so that the heat in the waste slag ash is reasonably utilized, and the preheated air is sprayed to the inner cavity of the furnace body from the air inlet pipe, the support pipe, the transmission box, the rotating pipe, the gas distribution box and the air injection hole, air is provided for the pyrolysis of the biomass fuel. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the overall structure schematic view of the utility model;

[0016] Figure 2 It is the structure schematic view of the furnace body of the utility model;

[0017] Figure 3 It is the split schematic view of the dust collecting box, the pull-out sealing plate and the ash receiving box of the utility model;

[0018] Figure 4 It is the structure schematic view of the heat exchange mechanism of the utility model;

[0019] Figure 5 It is the structure schematic view of the heat exchange mechanism of the utility model Figure 2 in A.

[0020] Explanation of reference numerals in the drawing:

[0021] 1, furnace body; 2, ash discharge cylinder; 3, arc bottom ash chute; 4, ash falling pipe; 5, ash accumulation box; 6, ash receiving box; 7, handle; 8, first motor; 9, spiral conveying rod; 10, plugging mechanism; 11, heat exchange mechanism; 12, supporting mechanism; 13, supporting pipe; 14, supporting hole plate; 15, transmission box; 16, rotating pipe; 17, gas distribution box; 18, air injection hole; 19, second bevel gear; 20, second motor; 21, transmission rod; 22, first bevel gear; 23, air guide box; 24, spiral air guide blade; 25, air extractor; 26, air inlet pipe; 27, pulling slot; 28, pulling sealing plate; 29, limiting block; 30, pulling plate; 31, scraper plate. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0023] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom end" and the like indicate 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 devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "provided with", "sleeved / connected", "connected" and the like should be broadly understood, for example, "connected" can be fixedly connected, or can be detachably connected, or integrally connected; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium; can be internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0025] Embodiment:

[0026] Please refer to Figures 1-5The utility model provides a kind of combustion device of biomass gasifier, including furnace body 1, the side of the bottom end of furnace body 1 is provided with ash discharge cylinder 2, the bottom of the inner chamber of furnace body 1 is provided with arc bottom ash chute 3, the bottom of one end of ash discharge cylinder 2 is fixedly sleeved with ash falling pipe 4, the bottom end of ash falling pipe 4 is fixedly sleeved with ash accumulation box 5, the side of ash accumulation box 5 is provided with blocking mechanism 10, the inner chamber of ash accumulation box 5 is sleeved with ash receiving box 6, one side of ash receiving box 6 extends to the outside of ash accumulation box 5 and is fixedly connected with handle 7, the outside of ash discharge cylinder 2 is provided with heat exchange mechanism 11, the inner chamber of furnace body 1 is provided with support mechanism 12, the end of ash discharge cylinder 2 is fixedly installed with first motor 8, the output shaft of first motor 8 extends to the inner chamber of ash discharge cylinder 2 and is fixedly connected with spiral conveying rod 9, and the end of spiral conveying rod 9 extends to the inner chamber of arc bottom ash chute 3.

[0027] Specifically, please refer to Figure 2 And Figure 5 Support mechanism 12 includes support tube 13 fixedly sleeved in the inner chamber of furnace body 1 and support hole plate 14 fixedly sleeved in the inner chamber of furnace body 1, the middle part of support tube 13 is provided with transmission box 15, one end of support tube 13 extends to the outside of furnace body 1 and is fixedly installed with second motor 20, the output shaft of second motor 20 extends to the inner chamber of support tube 13 and is fixedly connected with transmission rod 21, the end of transmission rod 21 extends to the inner chamber of transmission box 15 and is fixedly sleeved with first bevel gear 22, the top of transmission box 15 is rotatably connected with rotating tube 16, the bottom end of rotating tube 16 extends to the inner chamber of transmission box 15 and is fixedly sleeved with second bevel gear 19, second bevel gear 19 and first bevel gear 22 are engaged with each other, the top end of rotating tube 16 extends to the top of transmission box 15 and is fixedly connected with gas distribution box 17, the top surface of gas distribution box 17 is provided with air injection hole 18, the side of gas distribution box 17 is fixedly connected with scraper 31, and the bottom surface of scraper 31 and the top surface of support hole plate 14 are attached.

[0028] Specifically, please refer to Figure 1 、 Figure 2 And Figure 4 Heat exchange mechanism 11 includes air guide box 23 fixedly sleeved on the outside of ash discharge cylinder 2, the inner wall of air guide box 23 is fixedly connected with spiral air guide blade 24, the inner side of spiral air guide blade 24 and the outside of ash discharge cylinder 2 are connected, the side of one end of air guide box 23 is fixedly installed with air extractor 25, the output end of air extractor 25 extends to the inner chamber of air guide box 23, the top of the other end of air guide box 23 is fixedly sleeved with air inlet pipe 26, and the end of air inlet pipe 26 is fixedly sleeved to the inner chamber of support tube 13.

[0029] In the embodiment, the ash discharge cylinder 2 of the inner side of air guide box 23 has heat conduction performance, to ensure that the air in air guide box 23 and the waste residue ash in ash discharge cylinder 2 can be heat exchanged, so as to realize preheating of air.

[0030] Specifically, please refer to Figure 1And Figure 3 The blocking mechanism 10 comprises a pull-out slot 27 formed in the side of the dust collecting box 5, the inner cavity of the pull-out slot 27 movably sleeved with a pull-out blocking plate 28, the bottom of one end of the pull-out blocking plate 28 provided with a limiting block 29, and the other end of the pull-out blocking plate 28 extended to the outside of the dust collecting box 5 and fixedly connected with a pull plate 30.

[0031] In the embodiment, the limiting block 29 is used to limit the pull-out blocking plate 28, and when the pull-out blocking plate 28 is fully inserted into the dust collecting box 5, the upper and lower parts of the inner cavity of the dust collecting box 5 can be blocked.

[0032] Specifically, please refer to Figure 2 The side surface of the spiral conveying rod 9 is in close contact with the inner wall of the ash discharging cylinder 2 and the inner wall of the bottom of the inner cavity of the arc-bottom dust collecting groove 3.

[0033] In the embodiment, the rotation of the spiral conveying rod 9 can smoothly push the waste slag in the arc-bottom dust collecting groove 3 and the ash discharging cylinder 2.

[0034] Specifically, please refer to Figure 5 The bottom surface of the gas distribution box 17 is in close contact with the top surface of the transmission box 15.

[0035] In the embodiment, the transmission box 15 is used to support the gas distribution box 17, so as to ensure the stability of the gas distribution box 17.

[0036] Working principle: when using, first put the biomass fuel into the furnace body 1, and use the high temperature in the furnace body 1 to pyrolyze the fuel, at the same time, the fuel will fall into the supporting hole plate 14, at this time, the second motor 20 drives the transmission rod 21 and the first bevel gear 22 to rotate, through the meshing transmission between the first bevel gear 22 and the second bevel gear 19, the rotating pipe 16, the gas distribution box 17 and the scraper 31 are driven to rotate, the fuel on the supporting hole plate 14 is stirred by the scraper 31, the quality of biomass pyrolysis is ensured, at the same time, the waste residue ash generated by pyrolysis falls through the supporting hole plate 14 into the arc bottom ash bucket 3, then the first motor 8 drives the spiral conveying rod 9 to rotate, through the rotation of the spiral conveying rod 9, the waste residue ash in the arc bottom ash bucket 3 enters the ash discharge cylinder 2, and the waste residue ash in the ash discharge cylinder 2 falls from the ash falling pipe 4 into the ash receiving box 6 in the ash bucket 5, the waste residue ash is collected by the ash receiving box 6, then the air blower 25 sucks the external air into the inner cavity of the air guide box 23, and the air in the air guide box 23 moves spirally along the spiral air guide blade 24, in addition, the heat in the waste residue ash in the ash discharge cylinder 2 and the air in the air guide box 23 are exchanged, so that the air is preheated, and the residual heat of the waste residue ash is reasonably utilized, the preheated air in the air guide box 23 is introduced into the inner cavity of the supporting pipe 13 from the air inlet pipe 26, and the air enters the transmission box 15 from the supporting pipe 13, the air in the transmission box 15 enters the gas distribution box 17 from the rotating pipe 16, the air in the gas distribution box 17 is sprayed into the inner cavity of the furnace body 1 from the air injection hole 18, so as to pyrolyze the biomass fuel, finally, when the waste residue ash in the ash receiving box 6 needs to be treated, the pull-out sealing plate 28 is pushed to move above the ash receiving box 6, at this time, the waste residue ash falls on the top surface of the pull-out sealing plate 28, so as to pull out the ash receiving box 6 to clean the waste residue ash collected in the ash receiving box 6, after cleaning, the ash receiving box 6 is put back to the bottom of the inner cavity of the ash bucket 5, the pull-out sealing plate 28 is pulled outwards, the waste residue ash on the pull-out sealing plate 28 is pushed down by the inner wall of the ash bucket 5, and falls into the ash receiving box 6, so as to continue to collect the waste residue ash by the ash receiving box 6.

[0037] The above merely describes a preferred specific implementation manner of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and improvement concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A combustion device for a biomass gasification furnace, comprising a furnace body (1), characterized in that: A discharge cylinder (2) is provided on the side of the bottom end of the furnace body (1). An arc-bottom ash collection trough (3) is provided at the bottom of the inner cavity of the furnace body (1). An ash discharge pipe (4) is fixedly sleeved at the bottom of one end of the discharge cylinder (2). An ash collection box (5) is fixedly sleeved at the bottom end of the ash discharge pipe (4). A sealing mechanism (10) is provided on the side of the ash collection box (5). An ash receiving box (6) is sleeved at the bottom of the inner cavity of the ash collection box (5). One side of the ash receiving box (6) extends to the ash collection box. A handle (7) is fixedly connected to the outside of the box (5). A heat exchange mechanism (11) is provided on the outside of the ash discharge cylinder (2). A support mechanism (12) is provided in the inner cavity of the furnace body (1). A first motor (8) is fixedly installed at the end of the ash discharge cylinder (2). The output shaft of the first motor (8) extends to the inner cavity of the ash discharge cylinder (2) and is fixedly connected to a spiral conveying rod (9). The end of the spiral conveying rod (9) extends to the inner cavity of the arc-bottom ash accumulation trough (3).

2. The combustion device of a biomass gasification furnace according to claim 1, characterized in that: The support mechanism (12) includes a support tube (13) fixedly sleeved in the inner cavity of the furnace body (1) and a support perforated plate (14) fixedly sleeved in the inner cavity of the furnace body (1). A transmission box (15) is provided in the middle of the support tube (13). One end of the support tube (13) extends to the outside of the furnace body (1) and is fixedly installed with a second motor (20). The output shaft of the second motor (20) extends to the inner cavity of the support tube (13) and is fixedly connected with a transmission rod (21). The end of the transmission rod (21) extends to the inner cavity of the transmission box (15) and is fixedly sleeved with a first bevel gear (22). A rotating tube (16) is rotatably connected to the top of the moving box (15). The bottom end of the rotating tube (16) extends into the inner cavity of the transmission box (15) and is fixedly sleeved with a second bevel gear (19). The second bevel gear (19) and the first bevel gear (22) mesh with each other. The top end of the rotating tube (16) extends into the top of the transmission box (15) and is fixedly connected with a gas distribution box (17). A jet hole (18) is opened on the top surface of the gas distribution box (17). A scraper (31) is fixedly connected to the side of the gas distribution box (17). The bottom surface of the scraper (31) is in contact with the top surface of the support hole plate (14).

3. The combustion device of a biomass gasification furnace according to claim 2, characterized in that: The heat exchange mechanism (11) includes an air guide box (23) fixedly sleeved on the outside of the ash discharge cylinder (2). A spiral air guide vane (24) is fixedly connected to the inner wall of the air guide box (23). The inner side of the spiral air guide vane (24) is connected to the outer side of the ash discharge cylinder (2). An exhaust fan (25) is fixedly installed on the side of one end of the air guide box (23). The output end of the exhaust fan (25) extends into the inner cavity of the air guide box (23). An air inlet pipe (26) is fixedly sleeved on the top of the other end of the air guide box (23). The end of the air inlet pipe (26) is fixedly sleeved into the inner cavity of the support pipe (13).

4. The combustion device of a biomass gasification furnace according to claim 1, characterized in that: The sealing mechanism (10) includes a pull-out groove (27) opened on the side of the ash collection box (5). The inner cavity of the pull-out groove (27) is movably fitted with a pull-out sealing plate (28). A limit block (29) is provided at the bottom of one end of the pull-out sealing plate (28). The other end of the pull-out sealing plate (28) extends to the outside of the ash collection box (5) and is fixedly connected to a pull plate (30).

5. The combustion device of a biomass gasification furnace according to claim 1, characterized in that: The side of the spiral conveyor rod (9) is in contact with the inner wall of the ash discharge cylinder (2) and the inner wall of the bottom of the arc-bottom ash accumulation trough (3).

6. The combustion device of a biomass gasification furnace according to claim 2, characterized in that: The bottom surface of the air distribution box (17) and the top surface of the transmission box (15) are in contact.

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