Biomass gasifier

Abstract

The utility model discloses a biomass gasifier, belonging to the technical field of biomass gasifiers, which comprises a gasification furnace body, and an annular air chamber is fixedly sleeved on the outer side of the gasification furnace body. In the utility model, a gas distribution ring is installed in the inner cavity of the gasification furnace body through two rolling bearings. Through the cooperation of the gas distribution ring and the inclined ring, the influence of the air inlet device on the feeding and combustion of biomass fuel in the gasification furnace body is avoided. In addition, air is introduced into the inner cavity of the annular air chamber from the air inlet pipe, and the air in the annular air chamber enters the inner cavity of the gasification furnace body through the outer air inlet holes and the inner air inlet holes. At the same time, a servo motor is used to drive the straight gear to rotate, and the gas distribution ring is driven to rotate through the meshing transmission between the straight gear and the annular tooth seat, so as to change the position of the inner air inlet holes on the gas distribution ring, and further change the direction of air entering the gasification furnace body, thereby improving the practicability of the air inlet device of the biomass gasifier.

Description

Technical Field

[0001] This utility model relates to the field of biomass gasification furnace technology, and more specifically, to a biomass gasification furnace. Background Technology

[0002] A biomass gasifier is a gasifier that produces straw gas. The straw gas produced by a biomass gasifier is a green new energy source with strong vitality. Since the raw materials for biogas production are crop straw, forest waste, edible fungus residue, cattle and sheep manure, and all combustible materials, it is an inexhaustible renewable resource. When a biomass gasifier is running, air needs to be introduced into it for combustion.

[0003] A search revealed that utility model patent CN213872680U discloses a novel biomass gasification furnace with a high-efficiency air intake system, comprising a furnace body and an annular air chamber. The side wall of the furnace body is fixedly connected to the side wall of the annular air chamber by multiple support rods. The furnace body is characterized by having multiple ventilation pipes between it and the furnace body. A flexible hose connected to the ventilation pipes is attached to the inner wall of the furnace body, with a sealed air nozzle at the end of the hose away from the ventilation pipe. A magnetic ring is rotatably connected to the side wall of the furnace body, and a rotating ring is fixedly connected to the side wall of the magnetic ring by multiple brackets. The multiple ventilation pipes within the annular air chamber can uniformly supply a large amount of air to the furnace. The rotatable air nozzle can supply oxygen in multiple directions, making the reaction inside the furnace more complete and reducing waste. The rotation of the air nozzle is achieved by wind power driven by devices such as wind cups, rotating rings, magnetic rings, and magnetic rings, reducing additional driving force and saving economic costs.

[0004] However, the above-mentioned patent still has the following shortcomings: Although the direction of air intake can be adjusted by the cooperation of structures such as platform, gear, and air nozzle, when biomass fuel is put into the furnace body, the fuel will fall onto the gear and other structures, affecting the smooth operation of the air intake device. In addition, it is not convenient to filter the gas entering the furnace body. When humid gas enters the furnace body, it will affect the efficiency and quality of biomass fuel combustion. Therefore, we have proposed a biomass gasification furnace. Utility Model Content

[0005] In view of the problems existing in the prior art, the purpose of this utility model is to provide a biomass gasification furnace.

[0006] To solve the above problems, the present invention adopts the following technical solution: a biomass gasification furnace, comprising a gasification furnace body, an annular air chamber fixedly sleeved on the outer side of the gasification furnace body, an air inlet pipe fixedly connected to the side of the annular air chamber, a moisture absorption mechanism provided at the end of the air inlet pipe, multiple external air inlets provided on the outer side of the gasification furnace body and on the inner side of the annular air chamber, a transmission groove provided on the side of the gasification furnace body, two rolling bearings fixedly sleeved on the inner wall of the gasification furnace body, a gas distribution ring fixedly sleeved on the inner side of the two rolling bearings, multiple internal air inlets provided on the outer side of the gas distribution ring, an annular gear seat provided on the outer side of the gas distribution ring, an inclined ring provided at the top of the gas distribution ring, the outer side of the top of the inclined ring fitting against the inner wall of the gasification furnace body, a servo motor fixedly installed at the bottom of the annular air chamber cavity, a spur gear fixedly sleeved on the output shaft of the servo motor, the side of the spur gear penetrating the transmission groove and meshing with the annular gear seat.

[0007] As a preferred embodiment of this utility model, the moisture absorption mechanism includes a moisture absorption box fixedly sleeved at the end of the air inlet pipe, a blower fixedly installed on the side of the moisture absorption box, the output end of the blower extending into the inner cavity of the moisture absorption box, a fixed bracket provided in the inner cavity of the moisture absorption box, moisture absorption cotton sleeved in the inner cavity of the moisture absorption box and located inside the fixed bracket, and a sealing door hinged to the front of the moisture absorption box.

[0008] As a preferred embodiment of this utility model, the inner cavity of the annular air chamber and the end of the air inlet pipe are provided with two air guide plates.

[0009] As a preferred embodiment of this utility model, a protective net is fixedly sleeved on the inner side of the air distribution ring.

[0010] As a preferred embodiment of this utility model, a support ring is fixedly connected to the inner wall of the gasifier body, and the inner side of the support ring is in contact with the outer side of the bottom end of the gas distribution ring.

[0011] As a preferred embodiment of this utility model, a control panel is fixedly installed on the top surface of the moisture absorption box, and the control panel is electrically connected to the blower and the servo motor respectively.

[0012] Compared with existing technologies, the advantages of this utility model are:

[0013] In this invention, the gas distribution ring is installed in the inner cavity of the gasifier body through two rolling bearings. The cooperation between the gas distribution ring and the inclined ring avoids the air intake device from affecting the feeding and combustion of biomass fuel in the gasifier body. In addition, air is introduced into the inner cavity of the annular air chamber through the air intake pipe, and the air in the annular air chamber enters the inner cavity of the gasifier body through the outer air intake hole and the inner air intake hole. At the same time, the servo motor drives the spur gear to rotate, and the meshing transmission between the spur gear and the annular gear seat drives the gas distribution ring to rotate, changing the position of the inner air intake hole on the gas distribution ring, thereby changing the direction of air entering the gasifier body.

[0014] In this invention, the moisture-absorbing box, blower, fixed bracket and moisture-absorbing cotton are used in combination. The blower draws outside air into the inner cavity of the moisture-absorbing box, and the moisture-absorbing cotton absorbs and removes the moisture in the air, so as to avoid the moisture in the air from affecting the combustion of biomass fuel. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0016] Figure 2 This is a schematic cross-sectional view of the present invention.

[0017] Figure 3 This is a schematic diagram of the internal structure of the annular air chamber of this utility model.

[0018] Figure 4 This is a schematic diagram of the structure of the air guide plate of this utility model.

[0019] Figure 5 This is a schematic diagram of the structure of the air distribution ring of this utility model.

[0020] Figure 6 This is a cross-sectional schematic diagram of the moisture absorption box of this utility model.

[0021] Figure 7 This utility model Figure 2 Enlarged diagram of point A in the diagram.

[0022] The following are the labels in the diagram: 1. Gasifier body; 2. Annular air chamber; 3. External air inlet; 4. Air inlet pipe; 5. Moisture absorption mechanism; 6. Transmission groove; 7. Rolling bearing; 8. Air distribution ring; 9. Internal air inlet; 10. Inclined ring; 11. Servo motor; 12. Spur gear; 13. Air guide plate; 14. Annular gear seat; 15. Protective net; 16. Support ring; 17. Moisture absorption box; 18. Sealing door; 19. Blower; 20. Fixed bracket; 21. Moisture-absorbing cotton; 22. Control panel. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0024] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Example 1

[0026] Please see Figure 1-7 A biomass gasifier includes a gasifier body 1, an annular air chamber 2 fixedly sleeved on the outer side of the gasifier body 1, an air inlet pipe 4 fixedly connected to the side of the annular air chamber 2, a moisture absorption mechanism 5 provided at the end of the air inlet pipe 4, multiple external air inlets 3 opened on the outer side of the gasifier body 1 and located inside the annular air chamber 2, a transmission groove 6 opened on the side of the gasifier body 1, two rolling bearings 7 fixedly sleeved on the inner wall of the gasifier body 1, an air distribution ring 8 fixedly sleeved on the inner side of the two rolling bearings 7, multiple internal air inlets 9 opened on the outer side of the air distribution ring 8, an annular gear seat 14 provided on the outer side of the air distribution ring 8, an inclined ring 10 provided at the top of the air distribution ring 8, the outer side of the top of the inclined ring 10 fitting against the inner wall of the gasifier body 1, a servo motor 11 fixedly installed at the bottom of the inner cavity of the annular air chamber 2, a spur gear 12 fixedly sleeved on the output shaft of the servo motor 11, the side of the spur gear 12 passing through the transmission groove 6 and meshing with the annular gear seat 14.

[0027] In this embodiment, the sealing between the inner side of the gas distribution ring 8 and the inner wall of the gasifier body 1 is ensured by the fit between the outer side of the top of the inclined ring 10 and the inner wall of the gasifier body 1, so as to prevent biomass fuel from entering between the gas distribution ring 8 and the inner wall of the gasifier body 1.

[0028] For details, please refer to Figure 1 and Figure 6 The moisture absorption mechanism 5 includes a moisture absorption box 17 fixedly sleeved at the end of the air inlet pipe 4. A blower 19 is fixedly installed on the side of the moisture absorption box 17. The output end of the blower 19 extends into the inner cavity of the moisture absorption box 17. A fixing seat 20 is provided in the inner cavity of the moisture absorption box 17. Moisture absorption cotton 21 is sleeved in the inner cavity of the moisture absorption box 17 and located inside the fixing seat 20. A sealing door 18 is hinged to the front of the moisture absorption box 17.

[0029] In this embodiment, the side of the absorbent cotton 21 is in contact with the inner wall of the absorbent box 17 and the inner side of the sealing door 18, respectively, to ensure that the absorbent cotton 21 can completely absorb moisture from the air. In addition, the absorbent cotton 21 can be replaced by opening the sealing door 18.

[0030] For details, please refer to Figure 4 Two air guide plates 13 are provided in the inner cavity of the annular air chamber 2 and at the end of the air inlet pipe 4.

[0031] In this embodiment, two air guide plates 13 are used to guide the air entering the annular air chamber 2 from the air intake pipe 4 so that the air moves within the annular air chamber 2.

[0032] For details, please refer to Figure 5 A protective net 15 is fixedly sleeved on the inner side of the air distribution ring 8.

[0033] In this embodiment, the protective net 15 prevents biomass fuel from entering the outer side of the gas distribution ring 8 from the inner air inlet 9, while allowing air to be sprayed from the inner air inlet 9 into the inner cavity of the gasifier body 1.

[0034] For details, please refer to Figure 7 A support ring 16 is fixedly connected to the inner wall of the gasifier body 1, and the inner side of the support ring 16 is in contact with the outer side of the bottom end of the gas distribution ring 8.

[0035] In this embodiment, the support ring 16 is used to limit the rolling bearing 7 located below, and at the same time, the support ring 16 is used to seal the gap between the bottom end of the gas distribution ring 8 and the inner wall of the gasifier body 1.

[0036] For details, please refer to Figure 1 , Figure 6 and Figure 7 A control panel 22 is fixedly installed on the top surface of the desiccant box 17. The control panel 22 is electrically connected to the blower 19 and the servo motor 11 respectively.

[0037] In this embodiment, the blower 19 and the servo motor 11 are controlled by the control panel 22.

[0038] Working principle: In use, the blower 19 is first started to draw external air into the inner cavity of the moisture absorption box 17. The moisture-absorbing cotton 21 in the inner cavity of the moisture absorption box 17 absorbs and removes the moisture in the air. The air after moisture removal is introduced into the inner cavity of the annular air chamber 2 through the air inlet pipe 4, and the air in the annular air chamber 2 is guided by the air guide plate 13. Then, the air in the annular air chamber 2 enters from the outer air inlet 3 into the space between the outer side of the gas distribution ring 8 and the inner wall of the gasification furnace body 1. In addition, the air is introduced into the inner cavity of the gasification furnace body 1 through the inner air inlet 9 on the gas distribution ring 8. Finally, the servo motor 11 is started to drive the spur gear 12 to rotate. The meshing transmission between the spur gear 12 and the annular gear seat 14 drives the gas distribution ring 8 to rotate, thereby changing the position of the inner air inlet 9 on the gas distribution ring 8, and thus changing the direction of the air entering the gasification furnace body 1. In addition, the structure of the inclined ring 10 and the gas distribution ring 8 can avoid the influence of biomass fuel.

[0039] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model based on the technical solution and its improved concept should be covered within the protection scope of the present utility model.

Claims

1. A biomass gasification furnace, comprising a gasification furnace body (1), characterized in that: An annular air chamber (2) is fixedly sleeved on the outer side of the gasifier body (1). An air inlet pipe (4) is fixedly connected to the side of the annular air chamber (2). A moisture absorption mechanism (5) is provided at the end of the air inlet pipe (4). Multiple external air inlets (3) are opened on the outer side of the gasifier body (1) and on the inner side of the annular air chamber (2). A transmission groove (6) is opened on the side of the gasifier body (1). Two rolling bearings (7) are fixedly sleeved on the inner wall of the gasifier body (1). An air distribution ring (8) is fixedly sleeved on the inner side of the two rolling bearings (7). Multiple internal air inlets (9) are provided on the outer side of the ring (8). An annular toothed seat (14) is provided on the outer side of the air distribution ring (8). An inclined ring (10) is provided at the top of the air distribution ring (8). The outer side of the top of the inclined ring (10) is in contact with the inner wall of the gasifier body (1). A servo motor (11) is fixedly installed at the bottom of the inner cavity of the annular air chamber (2). A spur gear (12) is fixedly sleeved on the output shaft of the servo motor (11). The side of the spur gear (12) passes through the transmission groove (6) and meshes with the annular toothed seat (14). The moisture absorption mechanism (5) includes a moisture absorption box (17) fixedly sleeved at the end of the air inlet pipe (4). A blower (19) is fixedly installed on the side of the moisture absorption box (17). The output end of the blower (19) extends into the inner cavity of the moisture absorption box (17). A fixed bracket (20) is provided in the inner cavity of the moisture absorption box (17). Moisture-absorbing cotton (21) is sleeved in the inner cavity of the moisture absorption box (17) and located inside the fixed bracket (20). A sealing door (18) is hinged to the front of the moisture absorption box (17).

2. A biomass gasification furnace according to claim 1, characterized in that: Two air guide plates (13) are provided in the inner cavity of the annular air chamber (2) and at the end of the air inlet pipe (4).

3. A biomass gasification furnace according to claim 1, characterized in that: A protective net (15) is fixedly sleeved on the inner side of the air distribution ring (8).

4. A biomass gasification furnace according to claim 1, characterized in that: The inner wall of the gasifier body (1) is fixedly connected to a support ring (16), and the inner side of the support ring (16) and the outer side of the bottom end of the gas distribution ring (8) are in contact.

5. A biomass gasification furnace according to claim 1, characterized in that: The top surface of the moisture absorption box (17) is fixedly equipped with a control panel (22), which is electrically connected to the blower (19) and the servo motor (11).

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