A closed straw burning device and method for improving soil quality

Abstract

The invention discloses a closed straw burning device for improving soil quality in the technical field of improving soil, comprising: a soil base, a limiting shed for covering the straw is installed on the surface of the soil base, holes are opened through the surface of the limiting shed to allow gas to pass through the limiting shed, a dustproof shed for covering the limiting shed is installed on the surface of the soil base, a closed space is formed between the dustproof shed and the soil base, and a straw burning area is separated from the outside world. In the device, the straw burning area is covered by the dustproof shed to form a closed space, so that harmful gases generated by the burning of the straw will not be directly discharged into the outside air, which can ensure that the straw can be burned to improve the soil and protect the environment.

Description

Technical Field

[0001] The invention relates to the technical field of soil improvement, and in particular to a closed straw burning device and method for improving soil quality. Background Art

[0002] Straw refers to the stems and leaves (ears) of mature crops, generally corn, wheat, etc. The traditional way to deal with straw is to burn it, but burning it will pollute the air, and my country's "Air Pollution Law" stipulates that "open-air burning of straw, fallen leaves and other materials that produce smoke and dust pollution is prohibited";

[0003] However, this will prevent farmers from using traditional planting techniques to burn straw. Although the country encourages returning straw to the fields, the straw after returning to the fields is difficult to breed pests and diseases and cannot promote the improvement of soil quality. For this reason, we propose a closed straw burning device and method for improving soil quality. Summary of the invention

[0004] The object of the present invention is to provide a closed straw burning device and method for improving soil quality, so as to solve the problem that straw cannot be burned and improve the soil proposed in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a closed straw burning device for improving soil quality, comprising: a soil base, a limiting shed for covering the straw is installed on the surface of the soil base, and holes are opened through the surface of the limiting shed so that gas can pass through the limiting shed;

[0006] A dustproof shed covering the limiting shed is installed on the surface of the soil foundation, and a closed space is formed between the dustproof shed and the soil foundation to separate the straw burning area from the outside world.

[0007] Preferably, a blower and a gas purification mechanism are installed on both sides of the dustproof shed on the soil base surface, a connecting pipe is installed at the air outlet of the blower, the end of the connecting pipe is connected to the inner cavity of the dustproof shed, and the inlet of the gas purification mechanism is connected to the inner cavity of the dustproof shed through a conduit.

[0008] Preferably, a side baffle is installed on an outer wall of the limiting shed on one side opposite to the blower, and an arc-shaped baffle is installed on an outer wall of the other side of the limiting shed.

[0009] Preferably, an air inlet hole is formed through the outer wall of the side baffle, and a speed reduction mechanism is installed in the inner cavity of the air inlet hole.

[0010] Preferably, the air inlet comprises two groups of openings connected to each other, the diameter of the outer openings being smaller than the diameter of the inner openings.

[0011] Among them, the deceleration mechanism includes a mounting frame installed in the inner cavity of the inner opening, a moving rod that moves along the extension direction of the air inlet hole is slidably installed on the mounting frame, a moving block that blocks the outer opening is installed at the outer end of the moving rod, and an elastic part is installed between the outer wall of the moving rod and the outer wall of the mounting frame.

[0012] Preferably, a limiting block located inside the moving rod is installed in the inner cavity of the air inlet hole.

[0013] Preferably, a connecting block is installed inside the dustproof shed, and a placement groove is provided on the outer wall of the connecting block. A pressure plate is slidably installed on the outer side of the inner cavity of the placement groove, and a touch switch is installed on the inner side of the inner cavity of the placement groove.

[0014] Wherein, a backup blower connected to the dustproof shed is installed on the surface of the soil base, and the backup blower is electrically connected to the touch switch.

[0015] Preferably, a closed straw burning method for improving soil quality uses a closed straw burning device for improving soil quality, comprising the following steps:

[0016] The first step: drying the straw, piling the dried straw on the soil base, and then sequentially installing a limit shed and a dustproof shed on the soil base, so that the limit shed covers the straw, and the dustproof shed covers the limit shed to form a closed space, so that the combustion area is separated from the outside world, and then adding a combustion aid to the straw, igniting, and burning the straw;

[0017] Step 2: During combustion, the blower adds air into the dustproof shed, so that the air inside the dustproof shed and the smoke generated by combustion enter the gas purification mechanism for purification. In this process, the side baffle blocks and the deceleration mechanism cooperates to make the added air blow slowly toward the burning straw;

[0018] Step 3: When the air pressure inside the dustproof shed increases, the pressure plate will press the touch switch to energize the standby blower to blow air into the dustproof shed, increase the air flow rate inside the dustproof shed, and reduce the air pressure inside the dustproof shed;

[0019] Step 4: After the combustion is completed, let it stand for half an hour to cool down, then remove the dustproof shed, limit shed, gas purification mechanism, blower and spare blower, and then mix the combustion products with the soil base.

[0020] Compared with the prior art, the beneficial effect of the present invention is that the straw burning area is covered by a dustproof shed in the device to form a closed space, so that harmful gases generated by straw burning will not be directly discharged into the outside air, which not only ensures that the straw can be burned to improve the soil, but also protects the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the side baffle structure of the present invention;

[0023] Figure 3 This is an enlarged schematic diagram of the structure at A of the present invention;

[0024] Figure 4 It is a schematic diagram of the connection structure between the connecting block and the pressing plate of the present invention.

[0025] In the figure: 1. soil foundation; 2. limiting shed; 3. dustproof shed; 4. blower; 5. gas purification mechanism; 6. side baffle; 7. arc baffle; 8. air inlet; 9. connecting block; 10. speed reduction mechanism; 101. mounting frame; 102. moving rod; 103. moving block; 104. elastic member; 105. limiting block; 11. spare blower; 12. mounting groove; 13. pressure plate; 14. touch switch. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] Embodiment 1:

[0028] See also Figure 1 A straw closed burning device for improving soil quality comprises: a soil base 1 (soil of a field); in order to limit the burning straw, a limit shed 2 is installed on the surface of the soil base 1 to cover the straw; the limit shed 2 is made of a fire-resistant material, such as a steel mesh, or a steel plate with holes on the surface, so that gas can pass through the limit shed 2; in order to form a closed space, a dustproof shed 3 is installed on the surface of the soil base 1; the burning straw and the limit shed 2 are both in the dustproof shed 3; the dustproof shed 3 is also made of a fire-resistant material (the frame of the dustproof shed 3 is made of steel, and the roof is a fireproof board); the closed space formed between the dustproof shed 3 and the soil base 1 separates the straw burning area from the outside world, and prevents the generated smoke from being directly discharged to the outside world;

[0029] See also Figure 1In order to ensure that the straw can be fully burned, a blower 4 and a gas purification mechanism 5 are installed on the surface of the soil base 1 on both sides of the dustproof shed 3. A connecting pipe connected to the dustproof shed 3 is installed at the air outlet of the blower 4. The blower 4 blows air into the dustproof shed 3, so that the air and smoke inside the dustproof shed 3 enter the gas purification mechanism 5 for purification. The gas purification mechanism 5 is composed of dust suppression bags and activated carbon filtering mechanisms, etc., which can perform preliminary treatment on the smoke, and the gas purification mechanism 5 can also be installed with purification equipment for waste gas generated by straw combustion, so that the gas can be directly discharged after treatment. Smoke purification is a mature technology and is not described in detail here. The inlet of the gas purification mechanism 5 is connected to the inner cavity of the dustproof shed 3 through a conduit, and the electrical equipment involved in the device is electrically connected to the external power switch through a wire;

[0030] See also Figure 1 In order to protect the burning straw, a side baffle 6 is installed on the outer wall of the limiting shed 2 on one side opposite to the blower 4, so that the air introduced by the blower 4 will not blow directly to the burning straw to avoid affecting the combustion, and the products of combustion will not be blown away directly. An arc baffle 7 is installed on the outer wall of the other side of the limiting shed 2 to limit the burning straw and avoid the products of combustion from being blown away directly, so as to ensure that the soil can be improved after the straw is burned;

[0031] See also Figure 1 , Figure 2 and Figure 3 In order to allow sufficient oxygen to be provided when the straw is burned, an air inlet hole 8 is provided through the outer wall of the side baffle plate 6, so that the air introduced by the blower 4 can enter the air inlet hole 8, and the air entering is processed by the speed reduction mechanism 10. The speed reduction mechanism 10 is installed in the inner cavity of the air inlet hole 8. The air inlet hole 8 includes two groups of openings that are interconnected, and the diameter of the outer opening is smaller than the diameter of the inner opening. The speed reduction mechanism 10 includes a mounting frame 101 installed in the inner cavity of the inner opening. A moving rod 102 that moves along the extending direction of the air inlet hole 8 is slidably installed on the mounting frame 101. A moving block 103 that blocks the outer opening is installed at the outer end of the moving rod 102. The outer wall of the moving rod 102 is connected to the outer wall of the mounting frame 101. An elastic member 104 is installed between them, and the incoming air will push the moving block 103 into the inner opening to open the air inlet 8. The air enters the air inlet 8 from the gap between the moving block 103 and the inner opening, so that the amount of air entering the air inlet 8 at the same time is small, which is used to reduce the flow rate of the air flowing in the air inlet 8 so that the air can blow toward the burning straw at a slow speed so that the burning straw will not be blown. In order to limit the moving position of the moving block 103, a limit block 105 on the inner side of the moving rod 102 is installed in the inner cavity of the air inlet 8. After the moving block 103 moves back a certain distance with the moving rod 102, it is blocked by the limit block 105, so that the moving block 103 stops moving.

[0032] Embodiment 2:

[0033] See also Figure 1 and Figure 4 On the basis of Example 1, in order to ensure that the air pressure inside the dustproof shed 3 is not too high, a connecting block 9 is installed inside the dustproof shed 3, and a placement groove 12 is opened on the outer wall of the connecting block 9. A pressing plate 13 is slidably installed on the outer side of the inner cavity of the placement groove 12, and a touch switch 14 is installed on the inner side of the inner cavity of the placement groove 12. A standby blower 11 connected to the dustproof shed 3 is installed on the surface of the soil base 1. The standby blower 11 is electrically connected to the touch switch 14, and the touch switch 14 can control the standby blower 11 to work;

[0034] Compared with the first embodiment, a pressure plate 13 and a backup blower 11 are added. When the pressure inside the dustproof shed 3 is too high, the backup blower 11 works to blow air into the dustproof shed 3, thereby increasing the flow rate of air inside the dustproof shed 3 and reducing the air pressure inside the dustproof shed 3.

[0035] A closed straw burning method for improving soil quality, using a closed straw burning device for improving soil quality, comprises the following steps:

[0036] The first step is to dry the straw, pile the dried straw on the soil base 1, and then sequentially install the limiting shed 2 and the dustproof shed 3 on the soil base 1, so that the limiting shed 2 covers the straw, and the dustproof shed 3 covers the limiting shed 2 to form a closed space, so that the combustion area is separated from the outside, and then add a combustion aid to the straw, ignite it, and burn the straw;

[0037] Step 2: During combustion, the blower 4 works to add air into the dustproof shed 3, so that the air inside the dustproof shed 3 and the smoke generated by combustion enter the gas purification mechanism 5 for purification. In this process, the side baffle 6 blocks and the deceleration mechanism 10 cooperates to make the added air slowly blow toward the burning straw;

[0038] Step 3: When the air pressure inside the dustproof shed 3 increases, the pressure plate 13 presses the touch switch 14, so that the standby blower 11 is powered on to blow air into the dustproof shed 3, thereby increasing the flow rate of air inside the dustproof shed 3 and reducing the air pressure inside the dustproof shed 3;

[0039] Step 4: After the combustion is completed, let it stand for half an hour to cool down, then remove the dustproof shed 3, the limit shed 2, the gas purification mechanism 5, the blower 4 and the spare blower 11, and then mix the combustion products with the soil base 1.

[0040] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A closed straw burning device for improving soil quality, comprising: A soil base (1), characterized in that: a limiting shed (2) for covering the straw is installed on the surface of the soil base (1), and holes are opened through the surface of the limiting shed (2) so that gas can pass through the limiting shed (2); A dustproof shed (3) is installed on the surface of the soil base (1) to cover the limiting shed (2), and a closed space is formed between the dustproof shed (3) and the soil base (1), isolating the straw burning area from the outside world; The surface of the soil base (1) is provided with a blower (4) and a gas purification mechanism (5) located on both sides of the dustproof shed (3); a connecting pipe is installed at the air outlet of the blower (4); the end of the connecting pipe is connected to the inner cavity of the dustproof shed (3); and the inlet of the gas purification mechanism (5) is connected to the inner cavity of the dustproof shed (3) through a conduit; A side baffle (6) is installed on the outer wall of the limiting shed (2) on one side facing the blower (4), and an arc-shaped baffle (7) is installed on the outer wall of the other side of the limiting shed (2); An air inlet hole (8) is formed through the outer wall of the side baffle (6), and a speed reduction mechanism (10) is installed in the inner cavity of the air inlet hole (8); The speed reduction mechanism (10) comprises a mounting frame (101) mounted in the inner cavity of the inner opening, a moving rod (102) being slidably mounted on the mounting frame (101) and moving along the extension direction of the air inlet hole (8), a moving block (103) for blocking the outer opening being mounted on the outer end of the moving rod (102), and an elastic member (104) being mounted between the outer wall of the moving rod (102) and the outer wall of the mounting frame (101).

2. A closed straw burning device for improving soil quality according to claim 1, characterized in that: The air inlet holes (8) include two groups of openings that are interconnected, and the diameter of the outer openings is smaller than the diameter of the inner openings.

3. A closed straw burning device for improving soil quality according to claim 2, characterized in that: The inner cavity of the air inlet hole (8) is provided with a limiting block (105) located on the inner side of the moving rod (102).

4. A closed straw burning device for improving soil quality according to claim 3, characterized in that: A connecting block (9) is installed inside the dustproof shed (3), and a placement groove (12) is provided on the outer wall of the connecting block (9). A pressing plate (13) is slidably installed on the outer side of the inner cavity of the placement groove (12), and a touch switch (14) is installed on the inner side of the inner cavity of the placement groove (12). Wherein, a backup blower (11) connected to the dustproof shed (3) is installed on the surface of the soil base (1), and the backup blower (11) is electrically connected to the touch switch (14).

5. A closed straw burning method for improving soil quality, using the closed straw burning device for improving soil quality according to claim 4, characterized in that: The following steps are involved: The first step is to dry the straw and pile the dried straw on the soil base (1), and then sequentially install a limiting shed (2) and a dustproof shed (3) on the soil base (1), so that the limiting shed (2) covers the straw, and the dustproof shed (3) covers the limiting shed (2) to form a closed space, so that the combustion area is separated from the outside, and then add a combustion aid to the straw, ignite it, and burn the straw; Step 2: During combustion, the blower (4) operates to add air into the dustproof shed (3), so that the air inside the dustproof shed (3) and the smoke generated by combustion enter the gas purification mechanism (5) for purification. During this process, the side baffle (6) blocks and cooperates with the deceleration mechanism (10) to slowly blow the added air toward the burning straw; Step 3: When the air pressure inside the dustproof shed (3) increases, the pressure plate (13) presses the touch switch (14), so that the standby blower (11) is powered on to blow air into the dustproof shed (3), thereby increasing the air flow rate inside the dustproof shed (3) and reducing the air pressure inside the dustproof shed (3); Step 4: After the combustion is completed, the mixture is left to cool for half an hour, and then the dustproof shed (3), the limit shed (2), the gas purification mechanism (5), the blower (4) and the spare blower (11) are removed, and then the combustion products are mixed with the soil base (1).

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