Environment-friendly straw incinerator

Abstract

The environment-friendly straw incinerator comprises an incinerator body composed of a hearth, a fire grate, a lower incinerator cavity and a combustion chamber and an air supplementing system composed of a secondary air supplementing channel, a tertiary air supplementing channel, a tertiary air supplementing chamber and an air supplementing cone, the fire grate is located between the hearth and the lower incinerator cavity, a feeding port is located in the middle of the hearth, an incinerator door is arranged on the feeding port, and the air supplementing cone is arranged on the lower incinerator cavity. The secondary gas supplementing channel is located on a gas inlet channel outside the furnace body and communicated with the combustion chamber through a small hole in the wall face of the combustion chamber, the tertiary gas supplementing channel is one or more gas inlet channels located on the outer wall of the secondary gas supplementing channel, the upper portion of the tertiary gas supplementing channel is connected with the gas supplementing cone, and the gas supplementing cone is located on the upper portion of the combustion chamber. According to the technical scheme, the gas supplementing channel is arranged outside the furnace body, the gas supplementing cone is arranged on the upper portion of the combustion chamber, the combustion efficiency can be improved after three times of gas supplementing, harmful gas emission is reduced, harmful gas and particulate matter emission is reduced, plant diseases and insect pests are eliminated, pesticide use in the next year is reduced, combusted furnace ash can be scattered in the field, and the environment is protected. The farmland fertilizer efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of combustion equipment, and particularly to an environmentally friendly straw incinerator. Background Art

[0002] Usually in rural fields, after the fruits are harvested, the straws of various plants are piled up in the field ditches, which not only occupy the site, but also easily cause pests and diseases, affect the growth of plants in the coming year, and even pollute the environment; if they are concentrated and packed and transported out, it cannot be widely promoted due to the too high cost; directly burning can solve the problems of pests and diseases and cost, and even improve the fertility of the land, but if there is a lack of centralized management, thick smoke will be generated during the burning process, which will affect the environment, and those close to the road will affect traffic safety and even cause fires. Therefore, how to eliminate pests and diseases, improve the fertility of the land, and reduce environmental pollution at the same time is something that must be implemented to solve the issues of agriculture, rural areas, and farmers. Summary of the Invention

[0003] The purpose of the present invention is to provide an environmentally friendly straw incinerator, which can realize that no environmental pollution problems such as thick smoke are caused when the straw is burned in the incinerator, and can kill pests and insect eggs in the straw, eliminate pests and diseases, reduce the usage amount of pesticides in the coming year, the burning process is safe and controllable, and the furnace ash after burning can be scattered near the fields to improve the fertility of the land.

[0004] According to an object of the present invention, the present invention provides an environmentally friendly straw incinerator, including a furnace body composed of a furnace chamber, a grate, a lower furnace chamber, and a combustion chamber, and an air supply system composed of a secondary air supply channel, a tertiary air supply channel, a tertiary air supply chamber, and an air supply cone. The grate is located between the furnace chamber and the lower furnace chamber. The feeding port is located in the middle of the furnace chamber. The furnace door is arranged on the feeding port and is used to close or open the feeding port. The secondary air supply channel is an air intake channel outside the furnace body and communicates with the combustion chamber through small holes on the wall surface of the combustion chamber. The tertiary air supply channel is one or more air intake channels on the outer wall of the secondary air supply channel, and the upper part is connected to the air supply cone.

[0005] Further, the grate is evenly distributed with a plurality of circular or non-circular holes for ventilation and removing the furnace ash after the straw is burned.

[0006] Further, the combustion chamber is located at the upper part of the furnace body, and the outer surface is provided with circular or non-circular small holes that are uniformly distributed and penetrated, and air from the secondary air supply channel can be introduced to supplement air to the combustion chamber for the second time.

[0007] Further, the air supply cone is located directly above the combustion chamber, and the outer surface is provided with circular or non-circular small holes that are uniformly distributed and penetrated, which are used to supplement air to the unburned flue gas for the third time.

[0008] Further, the tip of the air supply cone faces the combustion chamber so as to improve the full mixing of the tertiary air supply and the unburned flue gas and enhance the afterburning effect.

[0009] Furthermore, the air supplement cone has a hollow structure inside to store and ensure the supply of the third air supplement.

[0010] Furthermore, the small holes penetrating the outer wall of the air supplement cone form an acute angle with the central axis along the air flow streamline direction, ensuring positive air supplement even without external pressurization and preventing flue gas backflow.

[0011] Furthermore, three or more furnace feet are provided at the bottom of the furnace body to facilitate the stable placement of the incinerator on the ground.

[0012] The technical solution of the present invention lies in the air supplement channel provided outside the furnace body and the air supplement cone above the combustion chamber. This structure can improve the combustion efficiency, reduce the emission of harmful gases, reduce the emission of harmful gases and particulate matter, eliminate pests and diseases, reduce the use of pesticides in the coming year, and the burned furnace ash can be scattered in the fields to improve the fertilizer efficiency of farmland. Description of the Drawings

[0013] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0014] Figure 1 It is the front view of the embodiment of the present invention;

[0015] Figure 2 It is the top view of the embodiment of the present invention;

[0016] Figure 3 It is the A-A cross-sectional view of the embodiment of the present invention Figure 2 in the present invention;

[0017] Figure 4 It is the axonometric view of the embodiment of the present invention;

[0018] In the figure, 1, third air supplement chamber; 2, third air supplement hole; 3, flue gas; 4, air supplement cone; 5, second air supplement hole; 6, feeding port; 7, furnace door; 8, lower furnace cavity; 9, first air supplement; 10 furnace feet; 11, second air supplement; 12, third air supplement; 13, second air supplement channel; 14, grate; 15, third air supplement channel; 16, furnace chamber; 17, combustion chamber, 18, third air supplement hole. Detailed Embodiments

[0019] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative work shall fall within the protection scope of the present invention.

[0020] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0021] In addition, the terms "primary" and "secondary" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "primary" and "secondary" may explicitly or implicitly include one or more of the said features. In the description of the present invention, the meaning of "a plurality" is two or more, unless otherwise specifically defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] Embodiment 1

[0023] As Figures 1-4 shown, a straw environmental protection incinerator includes a furnace body composed of a furnace chamber 16, a grate 14, a lower furnace chamber 8, and a combustion chamber 17, and an air supply system composed of a secondary air supply duct 13, a tertiary air supply duct 15, a tertiary air supply chamber 1, and an air supply cone 4. The grate 14 is located between the furnace chamber 16 and the lower furnace chamber 8. The feeding port 6 is located in the middle of the furnace chamber. The furnace door 7 is arranged at the feeding port 6 and is used to close or open the feeding port 6. The secondary air supply duct 13 is an air intake passage outside the furnace body and communicates with the combustion chamber 17 through secondary air supply holes 5 on the wall surface of the combustion chamber 17. The tertiary air supply duct 15 is one or more air intake passages on the outer wall of the secondary air supply duct 13, and the upper part is connected to the air supply cone.

[0024] A plurality of circular or non-circular through holes are evenly distributed on the grate 14 for ventilation and removal of the furnace ash after straw combustion. A plurality of circular or non-circular through secondary air supply holes 5 are evenly distributed on the outer wall of the combustion chamber 17 for introducing secondary air 11. A plurality of circular or non-circular through tertiary air supply holes 18 are evenly distributed on the outer wall of the air supply cone 4 for introducing secondary air 12.

[0025] When the present invention works normally, straw is added and ignited through the feeding port 6. Whether to open or close the furnace door 7 is determined according to the combustion fire. When the fire is strong, the furnace door 7 can be opened; when the fire is weak, the furnace door 7 can be closed. The flue gas 3 generated after the straw burns will rise along the furnace chamber 16. At the same time, the primary air supplement 9 will enter the furnace chamber 16 through the grate 14 along the lower furnace chamber 8, and then flow into the combustion chamber 17 to participate in the combustion of the straw. Due to a large amount of heat generated by the combustion and the reason of thermal expansion and contraction, the density of the air and the flue gas 3 in the furnace chamber becomes lower. Due to the action of pressure, the flue gas 3 will continue to rise, resulting in a lower pressure in the combustion chamber 17. The secondary air supplement 11 will flow upward along the secondary air supplement channel 13 and flow into the combustion chamber 17 through the secondary air supplement holes 5 penetrating above the combustion chamber 17, realizing the secondary combustion of the flue gas, greatly reducing emissions and particulate matter. For the same reason, a negative pressure will also be generated when the flue gas 3 flows through the air supplement cone 4, causing the tertiary air supplement 12 to flow upward along the tertiary air supplement channel 15 into the tertiary air supplement chamber 1, and then flow to the flue gas 3 through the tertiary air supplement holes 18 for mixing, realizing the tertiary combustion of the flue gas 3, further reducing emissions and particulate matter. No visible soot can be seen outside the incinerator, and since the tertiary air supplement holes 18 are inclined upward, there will be no backflow of the flue gas 3 either.

[0026] When the straw burns to a certain extent, the furnace door 7 can be opened regularly, and straw can be added in time through the feeding port 6 to achieve continuous combustion. The ash after combustion will fall to the ground under the action of gravity along the small holes on the grate 14, and can be cleaned in time and sprinkled in the field to increase fertilizer efficiency.

[0027] To ensure use, 3 or more furnace feet are added at the bottom to ensure stability during use, and at the same time, the ash can be cleaned at any time.

[0028] It should be noted that, in order to improve the combustion efficiency, according to the actual situation, the secondary air supplement 11 and the tertiary air supplement 12 can be supplied with air through an external blower, and the combustion efficiency will be higher, and the emissions of harmful gases and particulate matter will be lower.

[0029] Finally: The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An environmentally friendly straw incinerator, comprising a furnace body composed of a furnace chamber, a grate, a lower furnace chamber, and a combustion chamber, and an air supply system composed of a secondary air supply channel, a tertiary air supply channel, a tertiary air supply chamber, and an air supply cone. The grate is located between the furnace chamber and the lower furnace chamber. The feeding port is located in the middle of the furnace chamber. The furnace door is arranged on the feeding port. The secondary air supply channel is an intake channel outside the furnace body and communicates with the combustion chamber through small holes on the wall surface of the combustion chamber. The tertiary air supply channel is one or more intake channels on the outer wall of the secondary air supply channel and is connected to the air supply cone at the upper part.

2. The straw environmental protection incinerator according to claim 1, characterized in that, The combustion chamber is located at the upper part of the furnace body, and circular or non-circular small holes are uniformly arranged through the outer surface.

3. The straw environmental protection incinerator according to claim 1, characterized in that, The small holes penetrating through the outer wall of the air supply cone form an acute angle with the central axis along the air flow streamline direction.

4. The straw environmental protection incinerator according to claim 1, characterized in that, The tip of the air supply cone faces the combustion chamber.

5. The straw environmental protection incinerator according to claim 1, characterized in that, The inside of the air supply cone is a hollow structure.

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