Straw and air mixed combustion device

Abstract

The utility model relates to the technical field of biomass energy, and discloses a straw and air mixed combustion device which comprises a base, the top of the base is fixedly connected with a cover shell, the top of the cover shell is fixedly connected with a funnel, the left end of the cover shell is fixedly connected with a reaction tank, the top of the left end of the reaction tank is fixedly connected with heat dissipation holes, and the heat dissipation holes are fixedly connected with the top of the right end of the reaction tank. A driving assembly is fixedly connected to the inner wall of the top of the right end of the housing, a conveying stirrer is fixedly connected to the bottom of the driving assembly, a mounting frame is fixedly connected to the top of the base, a feeding system pipeline channel is fixedly connected to the right end of the reaction tank, and an electric air blower is fixedly connected to the right end of the top of the base. By means of the fire grate, fuel can be continuously settled in the combustion process, new fuel can be supplemented again, small-amplitude mixing can be conducted, combustion is easier, the phenomenon that slag bonding is prone to occurring in a high-temperature area is avoided, and maintenance cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of biomass energy, in particular to a straw and air mixed combustion device. Background Art

[0002] Straw refers to the remaining plant stems after crop harvest, usually the stems of crops such as cereals, rice, and corn. Straw is a rich agricultural waste with multiple uses and values. As an important agricultural waste, straw has rich resource potential and diverse utilization methods, and plays an important role in agricultural production, energy utilization, soil improvement, animal feed, etc.

[0003] Biomass pellet fuel is widely used in industrial production and life. In the existing biomass combustion devices, the air power system design is not optimized enough, and the traditional round or square hole shape is usually adopted, which leads to uneven air flow and distribution, affecting the combustion efficiency and thermal energy utilization. In addition, these hole designs are prone to incomplete combustion, resulting in more pollutant emissions, and slagging is prone to occur in high-temperature areas, increasing maintenance costs. Therefore, a straw and air mixed combustion device is proposed to solve the above problems. Summary of the invention

[0004] In order to make up for the above shortcomings, the utility model provides a straw and air co-combustion device, which aims to improve the problem of slagging in high-temperature areas in the prior art and increase in maintenance costs.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A straw and air mixed combustion device comprises a base, a cover shell is fixedly connected to the top of the base, a funnel is fixedly connected to the top of the cover shell, a reaction tank is fixedly connected to the left end of the cover shell, a heat dissipation hole is fixedly connected to the top of the left end of the reaction tank, a driving assembly is fixedly connected to the inner wall of the top of the right end of the cover shell, a conveying stirrer is fixedly connected to the bottom of the driving assembly, a mounting frame is fixedly connected to the top of the base, a feeding system pipeline channel is fixedly connected to the right end of the reaction tank, an electric blower is fixedly connected to the right end of the top of the base, a fan box is fixedly connected to the left end of the electric blower, an air supply system pipeline channel is fixedly connected to the left end of the fan box, and a grate is arranged inside the reaction tank;

[0007] As a further description of the above technical solution:

[0008] The driving assembly includes a motor, the outside of which is fixedly connected to the inner wall of the top right end of the housing, the driving end of the motor is fixedly connected to a coupling, and the bottom of the coupling is fixedly connected to the top of the conveying stirrer;

[0009] As a further description of the above technical solution:

[0010] The front bottom of the reaction tank is provided with two detection movable doors, and the front end of the reaction tank is provided with an observation hole;

[0011] As a further description of the above technical solution:

[0012] The left end of the air supply system pipeline channel is fixedly connected to the right end of the reaction tank, and the outside of the conveying stirrer is in contact with the inner wall of the feeding system pipeline channel;

[0013] As a further description of the above technical solution:

[0014] A flange is provided at the right end of the feeding system pipeline channel, and the bottom of the funnel is fixedly connected to the top of the feeding system pipeline channel;

[0015] As a further description of the above technical solution:

[0016] A connecting circular flange is fixedly connected to the top of the mounting frame, a seat bearing is fixedly connected to the top of the connecting circular flange, and an inner wall of the seat bearing is fixedly connected to the outside of the conveying stirrer.

[0017] The utility model has the following beneficial effects:

[0018] 1. In the utility model, biomass is added through a funnel, and then the motor is started to rotate the coupling to drive the conveying stirrer to rotate, so that the biomass can be conveyed and stirred to enter the interior of the reaction tank for combustion, and the fuel can be continuously settled during the combustion process through the grate, and new fuel is added again and mixed in a small range, so that combustion is easier, slagging is avoided in high temperature areas, and maintenance costs are reduced.

[0019] 2. In the utility model, the air supply system pipeline channel is started to convey air into the interior of the reaction tank by starting the electric blower, and the elliptical pipe has better fluid dynamics characteristics, and its streamlined design can reduce resistance and pressure loss, improve air flow efficiency, and thus improve the air supply efficiency of the combustion chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a three-dimensional schematic diagram of a straw and air mixed combustion device proposed by the utility model;

[0021] Figure 2 This is a schematic structural diagram of a flange of a straw and air mixed combustion device proposed by the utility model;

[0022] Figure 3This is a structural schematic diagram of a detection movable door of a straw and air mixed combustion device proposed by the utility model;

[0023] Figure 4 This is a schematic diagram of the structure of a reaction tank of a straw and air mixed combustion device proposed by the utility model;

[0024] Figure 5 The utility model discloses a structural schematic diagram of a grate of a straw and air mixed combustion device.

[0025] Legend:

[0026] 1. Funnel; 2. Cover; 3. Base; 4. Reactor; 5. Heat dissipation hole; 6. Detection movable door; 7. Observation hole; 8. Motor; 9. Coupling; 10. Conveying agitator; 11. Bearing with seat; 12. Connecting round flange; 13. Flange; 14. Electric blower; 15. Mounting frame; 16. Fan box; 17. Air supply system pipeline channel; 18. Feeding system pipeline channel; 19. Grate. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] Reference Figure 1 , Figure 3 and Figure 4 The utility model provides an embodiment: a straw and air mixed combustion device, including a base 3, a cover shell 2 is fixedly connected to the top of the base 3, and the cover shell 2 can be supported by the base 3, a funnel 1 is fixedly connected to the top of the cover shell 2, and biomass is put into the funnel 1, and a reaction tank 4 is fixedly connected to the left end of the cover shell 2, and the material is burned through the reaction tank 4, and a heat dissipation hole 5 is fixedly connected to the top of the left end of the reaction tank 4, and the heat dissipation hole 5 facilitates the reaction tank 4 to dissipate heat, and two detection movable doors 6 are arranged at the bottom of the front end of the reaction tank 4, and an observation hole 7 is arranged at the front end of the reaction tank 4, and the detection movable door 6 and the observation hole 7 are arranged to facilitate observation and adjustment of the reaction tank 4.

[0029] refer to Figure 2A driving assembly is fixedly connected to the inner wall of the top right end of the cover shell 2, and a conveying agitator 10 is fixedly connected to the bottom of the driving assembly. The conveying agitator 10 can be driven to rotate by the driving assembly. The driving assembly includes a motor 8. The outside of the motor 8 is fixedly connected to the inner wall of the top right end of the cover shell 2, so that the motor 8 can rotate stably when started. The driving end of the motor 8 is fixedly connected to a coupling 9, and the coupling 9 can be driven to rotate by starting the motor 8. Stability is provided by the coupling 9. The bottom of the coupling 9 is fixedly connected to the top of the conveying agitator 10, and the conveying agitator 10 can be rotated by rotating the coupling 9.

[0030] refer to Figure 2 and Figure 5 The top of the base 3 is fixedly connected with a mounting frame 15, and the top of the mounting frame 15 is fixedly connected with a connecting circular flange 12, which can be supported by the mounting frame 15. A bearing 11 with a seat is fixedly connected to the top of the connecting circular flange 12, and the inner wall of the bearing 11 with a seat is fixedly connected to the outside of the conveying stirrer 10. The bearing 11 with a seat can ensure the smooth rotation of the conveying stirrer 10. The right end of the reaction tank 4 is fixedly connected with a feeding system pipeline channel 18, and the outside of the conveying stirrer 10 is connected to the inner wall of the feeding system pipeline channel 18. The bottom of the funnel 1 is fixedly connected to the top of the feeding system pipeline channel 18, and the material enters the system pipeline channel 18 through the funnel 1, so that the conveying agitator 10 can stir the biomass in the feeding system pipeline channel. A flange 13 is provided at the right end of the feeding system pipeline channel 18, and the flange can improve the stability and safety of the conveying agitator 10. Finally, the fuel is transported to the reaction tank 4, and the fuel continues to settle during the combustion process. New fuel is added again and mixed in a small range to make combustion easier.

[0031] An electric blower 14 is fixedly connected to the top right end of the base 3, and a fan box 16 is fixedly connected to the left end of the electric blower 14. An air supply system pipeline channel 17 is fixedly connected to the left end of the fan box 16. The air supply system pipeline channel 17 is elliptical, which can improve the air flow efficiency. The left end of the air supply system pipeline channel 17 is fixedly connected to the right end of the reaction tank 4. By starting the electric blower 14, the impeller inside it can be rotated. At this time, the rotation of the impeller can generate negative pressure, and the external air enters the fan casing through the air inlet. The air flows through the gap between the impeller blades and is accelerated by the blades. The kinetic energy of the air increases, the pressure rises, and a high-speed airflow is formed. The accelerated air is discharged from the edge of the impeller. Finally, the air is discharged from the fan through the air outlet and enters the fan box 16, and then enters the air supply system pipeline channel 17 to be fully mixed and burned with the biomass in the feeding system.

[0032] A grate 19 is provided inside the reaction tank 4. During the combustion process, the fuel residue falls onto the preheating louver through the grate 19 inside the reaction tank 4. The air passes through the gaps of the preheating louver through the ventilation holes, thereby further burning the fuel residue. After the fuel residue is burned out, it falls by gravity and is discharged. Its slow descending speed can allow most of the remaining heat in the slag to be dissipated into the furnace, and can also provide a combustion-preserving effect for the fuel in the furnace.

[0033] Working principle: biomass is added through the funnel 1, and then the biomass enters the feeding system pipeline channel 18 through the funnel 1, and then the motor 8 is started, and the coupling 9 can be driven to rotate when the motor 8 is started, and the coupling 9 can drive the conveying stirrer 10 to rotate during the rotation, so that the biomass can be stirred and transported to the inside of the reaction tank 4 through the rotation of the coupling 9. At this time, the biomass will be blocked by the grate 19, and then the electric blower 14 is started, and the impeller inside the electric blower 14 can be rotated when the electric blower 14 is started. At this time, the rotation of the impeller can generate negative pressure, and the external air enters the fan casing through the air inlet, and the air flows through the gap between the impeller blades. The air is accelerated by the blades, the kinetic energy of the air increases, the pressure rises, and a high-speed airflow is formed. The accelerated air is discharged from the edge of the impeller, and finally, the air is discharged from the fan through the air outlet into the fan box 16, and then enters the air supply system pipeline channel 17 to be fully mixed and burned with the biomass inside the reaction tank 4. At this time, during the combustion process, the fuel residue falls onto the preheating louver through the grate 19 in the reaction tank 4, and the air passes through the gap of the preheating louver through the ventilation holes, thereby further burning the fuel residue. After the fuel residue is burned out, it falls by gravity and is discharged. Its descent speed is slow, which can allow most of the remaining heat in the slag to be dissipated into the furnace, and can also provide a combustion protection effect for the fuel in the furnace.

[0034] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A straw and air mixed combustion device, comprising a base (3), characterized in that: The top of the base (3) is fixedly connected to a cover shell (2), the top of the cover shell (2) is fixedly connected to a funnel (1), the left end of the cover shell (2) is fixedly connected to a reaction tank (4), the top of the left end of the reaction tank (4) is fixedly connected to a heat dissipation hole (5), the inner wall of the top of the right end of the cover shell (2) is fixedly connected to a drive assembly, the bottom of the drive assembly is fixedly connected to a conveying stirrer (10), the top of the base (3) is fixedly connected to a mounting frame (15), the right end of the reaction tank (4) is fixedly connected to a feeding system pipeline channel (18), the right end of the top of the base (3) is fixedly connected to an electric blower (14), the left end of the electric blower (14) is fixedly connected to a fan box (16), the left end of the fan box (16) is fixedly connected to an air supply system pipeline channel (17), and a grate (19) is arranged inside the reaction tank (4).

2. A straw and air mixed combustion device according to claim 1, characterized in that: The driving assembly comprises a motor (8), the outside of the motor (8) being fixedly connected to the inner wall of the top right end of the housing (2), the driving end of the motor (8) being fixedly connected to a coupling (9), and the bottom of the coupling (9) being fixedly connected to the top of the conveying stirrer (10).

3. The straw and air mixed combustion device according to claim 1, characterized in that: Two detection movable doors (6) are arranged at the bottom of the front end of the reaction tank (4), and an observation hole (7) is arranged and connected to the front end of the reaction tank (4).

4. The straw and air mixed combustion device according to claim 1, characterized in that: The left end of the air supply system pipeline channel (17) is fixedly connected to the right end of the reaction tank (4), and the outside of the conveying stirrer (10) is in contact with the inner wall of the feeding system pipeline channel (18).

5. The straw and air mixed combustion device according to claim 1, characterized in that: A flange (13) is provided at the right end of the feeding system pipeline channel (18), and the bottom of the funnel (1) is fixedly connected to the top of the feeding system pipeline channel (18).

6. The straw and air mixed combustion device according to claim 1, characterized in that: A connecting circular flange (12) is fixedly connected to the top of the mounting frame (15), a seat bearing (11) is fixedly connected to the top of the connecting circular flange (12), and the inner wall of the seat bearing (11) is fixedly connected to the outside of the conveying stirrer (10).

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