A machine for burning combustible material on the ground while travelling

Abstract

The present application relates to a kind of machines for treating combustible materials on the ground by incineration, in particular crop harvesting residues, especially machines for incineration of crop residues in the field, belonging to the field of agricultural machinery.The present application is a machine for incinerating combustible materials on the ground while moving, which essentially provides a movable combustor using ground scattered combustible materials as fuel, and collects the combustible materials on the ground into the combustion chamber of the combustor through the feed inlet and the fork grid structure.The combustor realizes efficient incineration of the combustible materials passed by while moving, and reduces the emission of smoke and dust.

Description

Technical Field

[0001] This invention relates to a machine for treating combustibles on the ground, particularly crop harvest residues, by incineration, especially a machine for incinerating crop straw in the field, and belongs to the field of agricultural machinery. Background Technology

[0002] The traditional method is to pile up and burn straw on the spot. This is the lowest-cost method, and its advantages are that the high temperature of burning can kill insect eggs and weed seeds, reducing the use of pesticides and herbicides. At the same time, the ash produced by burning straw can improve soil structure, increase soil fertility, and reduce the amount of chemical fertilizers used. Therefore, Japan has maintained the traditional farming method of burning straw in the fields. However, due to incomplete combustion, burning straw in the fields produces a large amount of harmful smoke and dust, polluting the atmosphere. Therefore, some countries have legislated to prohibit the burning of straw in the fields. Currently, there are two main alternatives to burning crop straw in the field: one is to mechanically shred the straw and return it to the soil. The advantage is reduced air pollution from burning straw, and it can increase soil organic matter content to some extent. However, the disadvantage is that the shredded straw buried in the soil cannot decompose in time, affecting crop growth the following year. Countries with abundant land resources adopt fallow practices, ceasing cultivation for a year to allow the straw to decompose further before resuming crop planting. The other method is to bale the straw. The baleed straw can be used as livestock feed or made into biomass fuel. This is a relatively expensive straw disposal method, requiring government subsidies and farmer cooperation. Neither of these methods can kill insect eggs and weed seeds, increasing pesticide use. Organic farmers in countries like the United States and Australia use fuels such as methane, employing tractors equipped with a row of burners to kill insect eggs and weed seeds with flames. This is also a high-cost solution. Currently, the unresolved contradiction in straw disposal is either air pollution or increased farming costs, while simultaneously increasing pesticide use. Summary of the Invention

[0003] This invention is a machine that burns combustibles on the ground while in motion. In essence, it provides a mobile burner that uses combustibles scattered on the ground as fuel. The combustibles, especially straw, are collected from the ground into the combustion chamber of the burner through the feed inlet and the forked grid structure. The burner achieves efficient combustion of combustibles in its path while in motion.

[0004] The present invention includes: a feed inlet 1, an air outlet 2, a combustion chamber 3, a combustion chamber shell 4, a forked grid 5, and a flame nozzle 6. The combustion chamber 3 is the space enclosed by the combustion chamber shell 4 and the ground, which is the space where combustibles burn. The combustion chamber shell 4 has the feed inlet 1, the air outlet 2, and the flame nozzle 6. The feed inlet 1 and the air outlet 2 are in front of the combustion chamber 3. The forked grid 5 is inside the combustion chamber 3 and close to the ground. The flame nozzle 6 is located behind the combustion chamber 3. The air outlet 2 is above the feed inlet 1. The air blown out by the air outlet 2 is generally directed towards the flame nozzle 6. According to the forward direction of the machine that burns combustibles on the ground, the sequence from front to back is: feed inlet 1, air outlet 2, forked grid 5, flame nozzle 6 or air outlet 2, feed inlet 1, forked grid 5, flame nozzle 6. As the machine that burns combustibles on the ground moves forward, the combustibles on the ground continuously enter the combustion chamber 3 through the feed inlet 1, are blocked by the forked grid 5 and are stored in the combustion chamber 3, and are burned fiercely with the help of the air ejected from the blower 2. The flames are sprayed out of the flame nozzle 6 onto the ground outside the combustion chamber 3.

[0005] The feed inlet 1 is located at the front end of the combustion chamber shell 4. It is a notch at the bottom of the combustion chamber shell 4. The side of the notch facing the ground is open. The upper edge of the notch is slightly higher than the combustibles on the ground, so that combustibles, such as straw, can enter the combustion chamber 1 smoothly.

[0006] The air inlet 2 is located above the feed inlet 1 and is one or more holes in the combustion chamber shell 4. The opening of the air inlet 2 is generally facing the flame nozzle 6. The air ejected from the air inlet 2 causes the flue gas and flame in the combustion chamber 3 to flow toward the flame nozzle 6, while also providing sufficient oxygen for the combustion of combustibles.

[0007] The forked-tooth grid 5 is located inside the combustion chamber 3, spanning the entire combustion chamber 3 and close to the ground. Its function is to allow flue gas and flames to pass through while simultaneously causing combustibles entering the combustion chamber 3 to accumulate within it and move forward with the combustion chamber 3. The forked-tooth grid 5 has a grid and forked-tooth structure, with the forked-tooth structure located below the grid, close to the ground, and having a serrated or forked shape. Its function is to fork up combustibles on the ground, such as straw, and push them forward without carrying too much soil. The function and structure of the grid are similar to a grate. The forked-tooth grid 5 can retain incompletely burned combustibles in the combustion chamber 3 while allowing ash, combustible gases, and flames to pass through. The forked-tooth grid 5 is the component that receives the most heat; the high temperature generated by combustion will reduce its strength. Therefore, the design should consider using heat-resistant materials or designing it as a hollow structure, injecting air into the cavity. This can both cool the forked-tooth grid 5 and increase the supply of combustion air.

[0008] The flame nozzle 6 is located at the rear end of the combustion chamber shell 4. It is one or more holes at the bottom of the combustion chamber shell 4 or an opening on the side facing the ground. The flame is sprayed onto the ground through the flame nozzle 6, and the killing of harmful grass seeds and insect eggs mainly occurs here.

[0009] Because the combustion process is confined within combustion chamber 3, and with ample air to aid combustion, the combustion temperature inside combustion chamber 3 is much higher than that of open combustion of combustibles in the field. Under the combined effect of high temperature and ample combustion air, the combustibles burn more completely, producing very little smoke and dust; the emissions are mainly water and carbon dioxide. This invention overcomes the shortcomings of all current straw treatment methods and has the following advantages: more complete combustion, greatly reducing the emission of smoke and dust that pollutes the air; higher combustion temperature, with the flame closer to the ground, resulting in more thorough killing of insect eggs and weed seeds; more complete combustion, producing finer ash, which is beneficial for improving soil structure and composition.

[0010] The machine of this invention can be moved in various ways, including but not limited to being towed or pushed by a tractor or other equipment, or powered by its own internal combustion engine or electric motor. It can be moved by wheels, tracks, or skateboards, but is not limited to these. A plow-like device for tilling the soil can be added to the rear of the machine to cover the ash produced by burning straw. The power source for the blower that generates high-pressure air includes, but is not limited to, an electric motor or an internal combustion engine.

[0011] The terms "front end," "front," "foremost part," "rear end," and "rear end" used herein all refer to the direction of travel of the machine of the present invention, with the opposite direction being "rear." Correspondingly, the flame nozzle 6 is defined herein as being at the very rear of the machine of the present invention. Furthermore, the term "orientation" used herein is a range, a general direction, and is not limited to a specific angle. The exemplary drawings are for illustrative purposes only; the shapes, dimensions, positions, orders, and relative sizes reflected in the drawings may vary. Attached Figure Description

[0012] Figure 1 , Figure 2 Schematic diagrams illustrating the overall structure of the invention from different angles; Figure 3 , Figure 4 , Figure 5 The schematic diagrams of Embodiment 1 of the present invention are shown from different angles, wherein... Figure 3 This is a cross-sectional view of an embodiment.

[0013] Figure 6 This is a cross-sectional view of Example 2.

[0014] In the diagram: 1—feed inlet, 2—air vent, 3—combustion chamber, 4—combustion chamber shell, 5—forked tooth grid, 6—flame nozzle, 7—blower, 8—air duct, 9—moving door, 10—moving door shaft.

[0015] With reference to the accompanying drawings, this specification discloses a complete and feasible technical solution for those skilled in the art, including key points for manufacturing. Figure 3 , Figure 4 , Figure 5 The following is an embodiment 1 of the present invention. Figure 6 The diagram shows another embodiment, 2. In embodiment 1, the air outlet 2 is multiple holes in the combustion chamber shell 4. In embodiment 2, the air outlet 2 is a slit, i.e., a single hole, and an active door 9 is designed. In both embodiments, the combustion air comes from three centrifugal fans 7 driven by 12V, 120W DC motors equipped with speed controllers. The centrifugal fans 7 blow the combustion air into the combustion chamber 3 through the air duct 8 and the air outlet 2. The air duct 8 can also be larger, covering more of the combustion chamber shell 4, so that the combustion air is preheated as it flows through the combustion chamber shell 4, while simultaneously cooling the combustion chamber shell 4 and reducing its high-temperature erosion. Special attention should be paid to the strength design of the fork-tooth grille 5 under high-temperature conditions. Two methods are used: one is the cavity design mentioned earlier, using air cooling to reduce the temperature of the fork-tooth grille 5; the other is to increase the thickness of the parts and improve the structure. Because the temperature at the front of the fork-tooth grille 5 is lower than that at the rear, the strengthening structure should be designed at the front of the fork-tooth grille 5 as much as possible, i.e., pulling from the front is better than supporting from the rear. To reduce the erosion of the combustion chamber shell 4 by high temperatures, the inner surface of the combustion chamber shell can be lined with heat-insulating material. The forked grating 5 should be designed to be replaceable at any time according to the different ridge spacing and ridge height of different combustibles. With the addition of a towing mechanism, this embodiment can be towed by a tractor; if four independent, motor-driven wheels are added to the four corners, along with a positioning system, it can be transformed into a self-propelled new energy agricultural machine. To improve efficiency, two machines can be used side by side to obtain a wider working surface; they can be deployed during operation and folded together for transport via the tractor's hydraulic system. Most components in this embodiment are made of cold-rolled steel plates.

Claims

1. A machine that burns combustibles on the ground while in motion, including: The machine consists of a feed inlet (1), an air vent (2), a combustion chamber (3), a combustion chamber shell (4), a forked grid (5), and a flame nozzle (6). The combustion chamber (3) is the space enclosed by the combustion chamber shell (4) and the ground. The combustion chamber shell (4) has a feed inlet (1), an air vent (2), and a flame nozzle (6). The forked grid (5) is inside the combustion chamber (3) and close to the ground. The air vent (2) is above the feed inlet (1). The machine travels in the direction described above, burning combustibles on the ground. The sequence from front to back is: feed inlet (1), air outlet (2), fork-tooth grid (5), flame nozzle (6), or air outlet (2), feed inlet (1), fork-tooth grid (5), flame nozzle (6). When the machine that burns combustibles on the ground moves forward, the combustibles on the ground continuously enter the combustion chamber (3) through the feed inlet (1), are blocked by the fork-tooth grid (5) and accumulate in the combustion chamber (3), and burn with the help of the air sprayed out by the air outlet (2). The flame is sprayed out through the flame nozzle (6).

2. The machine for burning combustibles on the ground while in motion, as described in claim 1, is characterized in that: The machine that burns combustibles on the ground while in motion moves forward, causing the combustibles on the ground to enter the combustion chamber (3).

3. The machine for burning combustibles on the ground while in motion, as described in claim 1, is characterized in that: The feed inlet (1) is located in front of the combustion chamber (3) and is a notch at the bottom of the combustion chamber shell (4), which is open on the side facing the ground.

4. The machine for burning combustibles on the ground while in motion, as described in claim 1, is characterized in that: The air inlet (2) is located above the feed inlet (1) and is one or more holes in the combustion chamber housing (4). The opening of the air inlet (2) is generally facing the flame nozzle (6).

5. The machine for burning combustibles on the ground while in motion, as described in claim 1, is characterized in that: The forked grille (5) is located inside the combustion chamber (3), runs across the entire combustion chamber (3) and is close to the ground. Its function is to allow the smoke and flame to pass through while the combustibles entering the combustion chamber (3) accumulate in the combustion chamber (3) and move forward with the combustion chamber (3). The forked grille (5) has a mesh and forked structure, wherein the forked structure is located at the bottom, close to or in contact with the ground.

6. The machine for burning combustibles on the ground while in motion, as described in claim 1, is characterized in that: The flame nozzle (6) is located behind the combustion chamber (3) and is one or more holes or openings at the bottom of the combustion chamber shell (4) facing the ground.

Images