Biomass pellet combustion machine

Abstract

The utility model discloses a kind of biomass pellet combustion machines, including rack, setting on rack's bunker, setting on rack, for the spiral conveyor of output material in bunker, setting on the connecting cover of rack, setting on the air bellow of connecting cover, outlet end and the blast engine of air bellow intercommunication, setting on the hearth of air bellow end, setting on the igniter of hearth, and ash removal device;The hearth has the air distribution interlayer with air bellow intercommunication, and the hearth has air distribution hole;The spiral conveyor is connected with a discharge pipe, and the discharge pipe is obliquely arranged and lower end is inserted into hearth.This utility model's advantage is: effectively avoid the risk that material of spiral conveyor outlet end is accidentally ignited due to close high temperature area.

Description

Technical Field

[0001] This utility model relates to the field of heating equipment technology, and in particular to a biomass pellet burner. Background Technology

[0002] A biomass pellet burner is a device specifically designed for the efficient and environmentally friendly combustion of biomass pellet fuel. Through advanced combustion technology, it uses biomass pellets derived from wood waste, agricultural waste, and other resources as an energy source, achieving the utilization of clean energy. This type of burner not only helps reduce dependence on traditional fossil fuels but also significantly reduces greenhouse gas emissions and the release of other pollutants, making it an important component of sustainable development. Furthermore, due to the high energy density and ease of storage and transportation of biomass pellets, biomass pellet burners have found widespread application in various fields, including industrial boilers, residential heating, and hot water supply.

[0003] my country's utility model announcement number CN 219494136 U discloses a biomass pellet burner. During use, one end of the feeding screw device is located inside the furnace, and the feeding screw device is filled with biomass pellets. Therefore, when the material is transported in intervals, the biomass pellets at one end of the feeding screw device in the furnace are easily ignited due to high temperature, which can easily cause the open flame to extend into the hopper, posing a safety hazard. Therefore, it is necessary to make improvements. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a biomass pellet burner.

[0005] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows:

[0006] A biomass pellet burner includes a frame, a hopper mounted on the frame, a screw conveyor mounted on the frame for discharging material from the hopper, a connecting cover mounted on the frame, a bellows mounted on the connecting cover, a blower with its outlet end connected to the bellows, a furnace located at the end of the bellows, an igniter located in the furnace, and an ash removal device; the furnace has an air distribution jacket connected to the bellows, and air distribution holes are provided in the furnace; the screw conveyor is connected to a discharge pipe, which is inclined and its lower end extends into the furnace.

[0007] Preferably, the bellows is provided with an air outlet pipe that is connected to the discharge pipe.

[0008] Preferably, the ash removal device includes a cylinder and an ash removal rod; the cylinder includes a cylinder body fixedly connected to the frame and a piston rod cooperating with the cylinder body, the piston rod passing through the air box, the ash removal rod being fixedly connected to the end of the piston rod, and the ash removal rod extending into the furnace.

[0009] Preferably, the end of the air distribution interlayer is provided with a detachable end plate, the end plate is fixedly connected to a pull rod extending into the other end of the air distribution interlayer, and the end of the pull rod is fixedly connected to a scraper plate located inside the air distribution interlayer.

[0010] Preferably, the inclination angle of the discharge pipe is 30-45°.

[0011] The above technical solution has the following advantages:

[0012] This invention improves the furnace feeding structure design, ensuring that biomass pellet fuel remains effectively distanced from the furnace when the screw conveyor stops feeding. This design effectively avoids the risk of accidental ignition of material at the screw conveyor outlet due to proximity to high-temperature areas. Therefore, it not only enhances the stability and reliability of the equipment during operation but also significantly improves safety, providing users with a safer and more efficient combustion environment. Attached Figure Description

[0013] Figure 1 This is a structural diagram of the present invention;

[0014] Figure 2 for Figure 1 A partial cross-section;

[0015] Figure 3 for Figure 2 Enlarged view of section A;

[0016] In the picture:

[0017] 1-Frame, 2-Hopper, 3-Screw conveyor, 4-Connecting cover, 5-Blower box, 6-Blower, 7-Furnace, 8-Igniter, 9-Dust removal device, 10-Air distribution jacket, 11-Air distribution hole, 12-Discharge pipe, 13-Outlet pipe, 14-Cylinder, 15-Cylinder body, 16-Piston rod, 17-Dust removal rod, 18-End plate, 19-Tie rod, 20-Dust scraper. Detailed Implementation

[0018] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. It should be noted that these descriptions are for the purpose of aiding understanding of this utility model, but do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0019] As shown in the attached figure, a biomass pellet burner includes a frame 1, a hopper 2 mounted on the frame 1, a screw conveyor 3 mounted on the frame 1 for outputting material from the hopper 2, a connecting cover 4 mounted on the frame 1, a bellows 5 mounted on the connecting cover 4, a blower 6 whose outlet end communicates with the bellows 5, a furnace 7 mounted at the end of the bellows 5, an igniter 8 mounted on the furnace 7, and a ash removal device 9; the furnace 7 has an air distribution jacket 10 communicating with the bellows 5, and the furnace 7 has air distribution holes 11; the screw conveyor 3 is connected to a discharge pipe 12, the discharge pipe 12 is inclined and its lower end extends into the furnace 7.

[0020] As a preferred technical solution in this embodiment, the air box 5 is provided with an air outlet pipe 13 that is connected to the discharge pipe 12. By providing the air outlet pipe 13, cold air can be continuously supplied to the discharge pipe 12 to cool down the discharge pipe 12, and high-temperature air can also be blown towards the hot flue gas discharge end of the furnace 7.

[0021] As a preferred embodiment, the ash removal device 9 includes a cylinder 14 and an ash removal rod 17. The cylinder 14 includes a cylinder body 15 fixedly connected to the frame 1 and a piston rod 16 cooperating with the cylinder body 15. The piston rod 16 passes through the bellows 5, and the ash removal rod 17 is fixedly connected to the end of the piston rod 16, extending into the furnace 7. When it is necessary to discharge the fuel coke from the furnace 7, the piston rod 16 of the cylinder 14 extends, pushing the ash removal rod 17 to extend to the right, thereby pushing out the fuel coke from the furnace 7.

[0022] As a preferred technical solution in this embodiment, a detachable end plate 18 is provided at the end of the air distribution jacket 10. A pull rod 19 extending into the other end of the air distribution jacket 10 is fixedly connected to the end of the end plate 18. A scraper 20 located inside the air distribution jacket 10 is fixedly connected to the end of the pull rod 19. During the operation of the ash removal device 9, some fuel coke will form fine ash material and enter the air distribution jacket 10 through the air distribution holes 11. When too much fine ash material accumulates in the air distribution jacket 10, it will affect the ventilation of the air distribution holes 11, which will affect the combustion in the furnace 7. Therefore, the fine ash material in the air distribution jacket 10 can be cleaned periodically by periodically removing the end plate 18 and pulling the end plate 18 to pull the scraper 20 out of the air distribution jacket 10.

[0023] As a preferred technical solution in this embodiment, the inclination angle of the discharge pipe 12 is 30-45°.

[0024] The working method of this utility model is the same as that of the existing biomass pellet burner, and will not be described in detail here; the use of the discharge pipe 12 in this utility model improves the safety of the equipment.

[0025] In the description of the above embodiments, for the sake of brevity and clarity, some components and their specific structural details that are not directly related to the core innovations of this utility model have been omitted. These omitted parts all fall within the scope of existing technology, and those skilled in the art can fully implement the design and manufacture of these parts based on their professional knowledge and existing technical materials. Therefore, they will not be described in detail here.

[0026] The embodiments of this utility model have been described in detail above with reference to the accompanying drawings, but this utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model, and these variations still fall within the protection scope of this utility model.

Claims

1. A biomass pellet burner, comprising a frame (1), a hopper (2) disposed on the frame (1), a screw conveyor (3) disposed on the frame (1) for outputting material from the hopper (2), a connecting cover (4) disposed on the frame (1), a bellows (5) disposed on the connecting cover (4), a blower (6) whose outlet end is connected to the bellows (5), a furnace (7) disposed at the end of the bellows (5), an igniter (8) disposed on the furnace (7), and a ash removal device (9); wherein the furnace (7) has an air distribution jacket (10) connected to the bellows (5), and the furnace (7) has air distribution holes (11); characterized in that: The screw conveyor (3) is connected to a discharge pipe (12), which is inclined and has its lower end extending into the furnace (7).

2. The biomass pellet burner according to claim 1, characterized in that: An air outlet pipe (13) is provided on the air box (5) and is connected to the discharge pipe (12).

3. The biomass pellet burner according to claim 1 or 2, characterized in that: The ash removal device (9) includes a cylinder (14) and an ash removal rod (17); the cylinder (14) includes a cylinder body (15) fixedly connected to the frame (1) and a piston rod (16) cooperating with the cylinder body (15), the piston rod (16) is inserted into the bellows (5), the ash removal rod (17) is fixedly connected to the end of the piston rod (16), and the ash removal rod (17) extends into the furnace (7).

4. The biomass pellet burner according to claim 1 or 2, characterized in that: The end of the air distribution interlayer (10) is provided with a detachable end plate (18), the end plate (18) is fixedly connected to a pull rod (19) extending into the other end of the air distribution interlayer (10), and the end of the pull rod (19) is fixedly connected to a scraper plate (20) located in the air distribution interlayer (10).

5. The biomass pellet burner according to claim 1 or 2, characterized in that: The inclination angle of the discharge pipe (12) is 30-45°.

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