Biomass pellet fuel deslagging and screening device

Abstract

The biomass particle fuel deslagging and screening device comprises a base structure, the base structure comprises multiple sets of supporting plates which are sequentially arranged at intervals from high to low, a sliding groove is formed in the tops of the multiple sets of supporting plates, multiple sets of screen structures are arranged on the sliding groove, and the multiple sets of screen structures are in clearance alignment fit with the multiple sets of supporting plates at intervals. And a dust removal structure and a pneumatic auxiliary structure are arranged on the sliding chute. By the adoption of the structure, gravity is matched with the inclined sliding grooves, granular fuel sequentially passes through the screen meshes with different calibers in the rolling process from top to bottom, multi-stage screening can be achieved, the screening efficiency is improved, the situation that the granular fuel is collided, loosened and broken due to the fact that a motor drives a vibrating screen is avoided, and energy saving and consumption reducing are achieved; dust is uniformly removed in the screening process, air pollution is reduced, gas flow is accelerated, heat is taken away, and the granular fuel is rapidly cooled and hardened; and pneumatic assistance is achieved, materials are blown while rapid cooling is achieved, and material rolling screening and floating dust stripping are assisted and matched.

Description

Technical Field

[0001] This utility model relates to the technical field of biomass pellet fuel production equipment, and in particular to a biomass pellet fuel slag removal and screening device. Background Technology

[0002] Biomass pellet fuel is a solid fuel made from biomass materials. Biomass refers to renewable energy sources derived from organic matter from plants and animals, such as crop residues, wood waste, and energy crops. While biomass pellets are formed into pellets after granulation, they still contain a large amount of debris generated during the granulation process. If this debris is not screened, significant dust will be generated during subsequent transportation and bagging, directly polluting the air environment of the processing site. Furthermore, most existing screening equipment is single-diameter, which, while achieving the screening purpose, has low efficiency and relies on motor-driven vibrating screens. Freshly granulated biomass pellets are not only hot but also lack hardness, making them prone to breakage from vigorous impacts, causing numerous inconveniences. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to provide a biomass pellet fuel slag removal and screening device. Utilizing gravity combined with an inclined chute, the pellet fuel is tumbled from top to bottom and passes through screens of different diameters in sequence. This not only enables multi-stage screening and improves screening efficiency, but also avoids the situation where the pellet fuel collides, loosens, and breaks due to motor-driven vibrating screens, thus saving energy and reducing consumption. During the screening process, dust is removed uniformly, reducing air pollution, while accelerating gas flow to remove heat and quickly cool and harden the pellet fuel. Pneumatic assistance is used to quickly cool the material and blow it, assisting in the rolling screening and removal of floating dust.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a biomass pellet fuel slag removal and screening device, including a base structure, wherein the base structure includes multiple sets of support plates arranged at intervals from high to low, a material sliding trough is provided on the top of the multiple sets of support plates, multiple sets of screen structures are provided on the material sliding trough, the multiple sets of screen structures are aligned and fitted with the multiple sets of support plates with gaps, and a dust removal structure and a pneumatic auxiliary structure are provided on the material sliding trough.

[0005] In a preferred embodiment, a guide seat is provided at the gap between the multiple sets of support plates.

[0006] In the preferred embodiment, the screen diameter is smaller at the feed end of the multi-screen structure that is closer to the horizontal position of the material chute.

[0007] In a preferred embodiment, the material chute is provided with material-gathering inclined baffles on both sides.

[0008] In a preferred embodiment, the material chute is provided with multiple sets of baffles arranged in a zigzag pattern.

[0009] In a preferred embodiment, the dust removal structure includes a gas collection hood installed on the material chute, the gas collection hood being connected to the dust collection box via a collection pipe, and an air pump being installed on the collection pipe.

[0010] In a preferred embodiment, the pneumatic auxiliary structure includes an air blowing device, which is equipped with an air vent pipe. The air vent pipe is equipped with air delivery pipes arranged on both sides of the material chute, and the air delivery pipes are equipped with multiple sets of air jet pipes that connect to the material chute.

[0011] In a preferred embodiment, the radial direction of the jet pipe is the same as and corresponds to the arrangement direction of the baffle plate on the opposite side.

[0012] The biomass pellet fuel slag removal and screening device provided by this utility model, by adopting the above-described structure, has the following beneficial effects:

[0013] (1) By using gravity in combination with an inclined chute, the pellet fuel is rolled from top to bottom and passes through screens of different diameters in sequence. This not only enables multi-stage screening and improves screening efficiency, but also avoids the situation where the pellet fuel collided and broke due to the motor-driven vibrating screen, thus saving energy and reducing consumption.

[0014] (2) Dust removal is carried out uniformly during the screening process, which reduces air pollution and accelerates gas flow to remove heat, so that the pellet fuel can be cooled and hardened quickly.

[0015] (3) Pneumatic assistance, while rapidly cooling down, blows the material to assist in the rolling screening and removal of floating dust. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0018] Figure 2 This is a schematic diagram of the overall structure of this utility model.

[0019] Figure 3 This is a schematic diagram of the base structure of this utility model.

[0020] Figure 4 This is a schematic diagram of the material chute structure of this utility model.

[0021] Figure 5 This is a schematic diagram of the pneumatic auxiliary structure of this utility model.

[0022] In the diagram: 1. Base structure; 2. Material chute; 3. Pneumatic auxiliary structure; 4. Air collection hood; 5. Collection pipe; 6. Dust collector; 7. Air pump; 8. Support plate; 9. Material guide seat; 10. Screen structure; 11. Material gathering inclined baffle; 12. Material blocking inclined plate; 13. Air blowing device; 14. Air vent pipe; 15. Air delivery pipe; 16. Air jet pipe. Detailed Implementation

[0023] Example 1:

[0024] like Figure 1-5 The biomass pellet fuel slag removal and screening device includes a base structure 1. The base structure 1 includes multiple sets of support plates 8 arranged at intervals from high to low. The top of the multiple sets of support plates 8 is provided with a material sliding trough 2. The material sliding trough 2 is provided with multiple sets of screen structures 10. The multiple sets of screen structures 10 and the multiple sets of support plates 8 are aligned and fitted with each other with gaps. The material sliding trough 2 is provided with a dust removal structure and a pneumatic auxiliary structure 3.

[0025] In a preferred embodiment, guide seats 9 are provided at the gaps between the multiple sets of support plates 8. These guide the debris to fall, facilitating collection and processing.

[0026] In the preferred embodiment, the screen diameter of the multi-set screen structure 10 is smaller at the feed end, which is closer to the horizontal position of the material feeding chute 2. This gradual sorting from dense to coarse facilitates the separation of debris and promotes recycling.

[0027] In a preferred embodiment, the material chute 2 is provided with material-gathering inclined baffles 11 on both sides. These baffles gather the material and ensure that the material path is concentrated on the screen structure 10.

[0028] In a preferred embodiment, the material chute 2 is provided with multiple sets of baffles 12 arranged in a zigzag pattern. This extends the material's sliding stroke on the material chute 2, increases the screening time, and results in more thorough screening.

[0029] In a preferred embodiment, the dust removal structure includes a gas collection hood 4 mounted on the material sliding chute 2. The gas collection hood 4 is connected to the dust collection box 6 via a collection pipe 5, and a vacuum pump 7 is installed on the collection pipe 5. All floating dust generated during the material sliding process is collected uniformly, reducing dust pollution to the air environment.

[0030] In a preferred embodiment, the pneumatic auxiliary structure 3 includes an air blower 13, which is equipped with an air vent 14. The air vent 14 is equipped with air delivery pipes 15 arranged on both sides of the material chute 2, and the air delivery pipes 15 are equipped with multiple sets of air jet pipes 16 that connect to the material chute 2. The air blower, in conjunction with the material rolling, can both increase the material rolling speed and blow away dust for unified collection.

[0031] In a preferred embodiment, the radial direction of the jet pipe 16 is the same as and corresponds to the arrangement direction of the opposing baffle 12. The jet pipe 16 blows obliquely in the direction of the baffle 12, directly facing the material, quickly stripping away dust and cooling the freshly granulated biomass pellet fuel, removing excess hot and humid air.

[0032] Example 2:

[0033] like Figure 1-5 In the process, a screen structure 10 with a corresponding sieve aperture gradient is selected according to the raw material particle size and installed in the sliding chute 2. The raw material is fed into the sliding chute 2 from the high-level feed end and slides down in a zigzag shape along the baffle plate 12. The air blowing device 13 is activated and the jet pipe 16 blows away the agglomerated particles. The residual particles fall into the guide seat 9 through the multi-stage screen structure 10 in sequence. The complete particulate fuel is discharged from the low position of the sliding chute 2. The air pump 7 sucks the dust to the dust collection box 6 through the air collection hood 4.

[0034] Example 3:

[0035] like Figure 1-5 The working principle of this utility model is as follows:

[0036] Gradient screening and flow guidance: When the material slides down from the high feed end, the smallest particles are intercepted by the first layer of small-aperture screen structure 10, medium-sized particles pass through the second layer of screen, and the largest intact particles pass through the end screen, realizing three-level sorting; the guide seat 9 guides particles of different sizes to designated collection areas, and the material gathering inclined baffle 11 prevents material leakage.

[0037] Pneumatic dispersion and dust removal: The airflow from the jet pipe 16 impacts the material layer, causing the agglomerated particles to disperse and accelerate through the sieve holes. The air collection hood 4 covers most of the area of ​​the material chute 2, and the air pump 7 creates a negative pressure environment. The dust enters the dust collection box 6 for filtration with the airflow.

[0038] The beneficial effects of this utility model are as follows: By utilizing gravity in conjunction with an inclined chute, the fuel pellets tumble from top to bottom and pass through screens of different diameters in sequence. This achieves multi-stage screening, improving screening efficiency, and avoids the situation where the fuel pellets collide, loosen, and break due to motor-driven vibrating screens, thus saving energy and reducing consumption. Dust is removed uniformly during the screening process, reducing air pollution, while accelerating gas flow to remove heat and rapidly cool and harden the fuel pellets. Pneumatic assistance not only rapidly cools the material but also blows it, assisting in the rolling screening and removing of floating dust.

Claims

1. A biomass pellet fuel slag removal and screening device, comprising a base structure (1), characterized in that: The base structure (1) includes multiple sets of support plates (8) arranged in a high-low sequence. The top of the multiple sets of support plates (8) is provided with a material sliding groove (2). The material sliding groove (2) is provided with multiple sets of screen structures (10). The multiple sets of screen structures (10) and the multiple sets of support plates (8) are aligned and fitted with each other with a gap. The material sliding groove (2) is provided with a dust removal structure and a pneumatic auxiliary structure (3).

2. The biomass pellet fuel slag removal and screening device according to claim 1, characterized in that: A guide seat (9) is provided at the gap between the multiple sets of support plates (8).

3. The biomass pellet fuel slag removal and screening device according to claim 1, characterized in that: The screen diameter of the multi-screen structure (10) is smaller the closer it is to the feed end of the material chute (2) at the horizontal position.

4. The biomass pellet fuel slag removal and screening device according to claim 1, characterized in that: The material chute (2) is provided with material gathering inclined baffles (11) on both sides.

5. The biomass pellet fuel slag removal and screening device according to claim 1, characterized in that: The material chute (2) is provided with multiple sets of baffles (12) arranged in a zigzag pattern.

6. The biomass pellet fuel slag removal and screening device according to claim 1, characterized in that: The dust removal structure includes a gas collection hood (4) installed on the material chute (2), the gas collection hood (4) is connected to the dust removal box (6) through a collection pipe (5), and a vacuum pump (7) is installed on the collection pipe (5).

7. The biomass pellet fuel slag removal and screening device according to claim 1, characterized in that: The pneumatic auxiliary structure (3) includes an air blowing device (13), an air pipe (14) is provided on the air blowing device (13), an air supply pipe (15) is provided on the air supply pipe (14) and the air supply pipe (15) is provided on both sides of the material chute (2), and multiple sets of air jet pipes (16) are provided on the air supply pipe (15) to connect the material chute (2).

8. The biomass pellet fuel slag removal and screening device according to claim 7, characterized in that: The radial direction of the jet pipe (16) is the same as and corresponds to the arrangement direction of the baffle plate (12) on the opposite side.

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