Straw carbonization and returning to the field device

Abstract

This utility model discloses a straw carbonization and returning-to-field device, including a carbonization furnace, an oxygen exhaust mechanism, a sealing door, and a compression exhaust mechanism. A stainless steel partition plate is fixed inside the carbonization furnace. A coal combustion chamber is located on the lower side of the stainless steel partition plate, and a carbonization chamber is located on the upper side of the stainless steel partition plate. The sealing door is rotatably connected to the carbonization furnace via a hinge and is used to seal the carbonization chamber. An oxygen exhaust mechanism connected to the top of the carbonization furnace is installed, and a compression exhaust mechanism inserted into the left side of the carbonization furnace is installed therein. This utility model uses the compression exhaust mechanism to compact the straw and expel the air inside the straw, thereby improving the internal heat conduction efficiency of the straw. The oxygen exhaust mechanism reduces the oxygen level inside the furnace, preventing excessive combustion of the straw and achieving efficient and stable carbonization of the straw.

Description

Technical Field

[0001] This utility model relates to the field of straw carbonization technology, and in particular to a straw carbonization and returning device. Background Technology

[0002] After straw is carbonized and returned to the field, it can realize the resource utilization of straw, and the biochar produced can improve soil structure and enhance soil fertility. It can also reduce pollution caused by straw burning and contribute to the sustainable development of agriculture.

[0003] Existing straw carbonization and returning-to-the-field devices often fail to compact the straw within the carbonization chamber, resulting in large internal voids and excessive air retention. This leads to low heat transfer efficiency, uneven heating, and negatively impacts carbonization effectiveness. Furthermore, the lack of a dedicated oxygen venting mechanism prevents effective reduction of oxygen content within the furnace, increasing the risk of over-burning or oxidation of the straw and lowering the quality of biochar. Therefore, there is an urgent need to develop a straw carbonization and returning-to-the-field device that uses a compression exhaust mechanism to compact the straw and expel air, improves internal heat transfer efficiency, and reduces oxygen levels within the furnace through an oxygen venting mechanism to prevent over-burning. This would achieve efficient and stable carbonization of the straw, overcoming current shortcomings and meeting current needs. Utility Model Content

[0004] The purpose of this invention is to provide a straw carbonization and returning device to the field to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A straw carbonization and returning-to-field device includes a carbonization furnace, an oxygen exhaust mechanism, a sealing door, and a compression exhaust mechanism. A stainless steel partition plate is fixed inside the carbonization furnace. A coal combustion chamber is located on the lower side of the stainless steel partition plate, and a carbonization chamber is located on the upper side of the stainless steel partition plate. The sealing door is rotatably connected to the carbonization furnace via a hinge and is used to seal the carbonization chamber. An oxygen exhaust mechanism connected to the top of the carbonization furnace is installed. A compression exhaust mechanism inserted into the left side of the carbonization furnace is installed therein. The oxygen exhaust mechanism includes an air pump, a conduit, and a solenoid valve. The air pump is fixed to the top of the carbonization furnace. The air pump's suction end is connected to a conduit, which is inserted into the carbonization furnace. A solenoid valve is installed on the conduit. The compression and exhaust mechanism includes an extrusion plate, heat insulation rods, a connecting plate, and an electric telescopic rod. The extrusion plate is located on the left side inside the carbonization furnace. Two heat insulation rods penetrating the carbonization furnace are fixed on the extrusion plate. The heat insulation rods are slidably connected to the carbonization furnace. The left end of the heat insulation rod is fixed to the connecting plate. Two electric telescopic rods are fixed to the outside of the carbonization furnace. The telescopic ends of the electric telescopic rods are fixed to the connecting plate.

[0007] Preferably, a sealing gasket is fixed on the sealing door, and a fastening screw that can be screwed onto the carbonization furnace is detachably installed on one side of the sealing door.

[0008] Preferably, an exhaust pipe is fixed to the top of the carbonization furnace, and a one-way valve is installed on the exhaust pipe.

[0009] Preferably, a PLC controller is fixedly installed on the outside of the carbonization furnace, and the air pump, solenoid valve, and electric telescopic rod are all controlled by the PLC controller.

[0010] The beneficial effects of this utility model are as follows: When using this straw carbonization and returning-to-field device, a person first places the straw into the carbonization chamber. An electric telescopic rod moves the connecting plate, heat insulation rod, and extrusion plate, causing the extrusion plate to compress the straw inside the carbonization furnace, expelling a large amount of air mixed with the straw and reducing the internal voids of the straw, thus improving heat transfer efficiency and making the heating more uniform. Then, the sealing door is closed and the fastening screw is tightened. Next, the oxygen venting mechanism vents the air from the carbonization furnace, reducing the oxygen content. Finally, coal is placed in the coal combustion chamber for combustion, thereby heating and carbonizing the straw inside the carbonization chamber. In summary, this utility model achieves efficient and stable straw carbonization by using a compression exhaust mechanism to compact the straw, expel air from the straw, and improve the internal heat transfer efficiency of the straw, while reducing the oxygen content in the furnace through the oxygen venting mechanism, preventing excessive burning of the straw. Attached Figure Description

[0011] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0012] Figure 2 This is a schematic diagram of the open state of this utility model.

[0013] Figure 3 This is a partial structural schematic diagram of the present invention.

[0014] Legend:

[0015] 1. Carbonization furnace; 101. Stainless steel partition plate; 102. Coal combustion chamber; 103. Carbonization chamber; 2. Exhaust pipe; 201. One-way valve; 3. Oxygen exhaust mechanism; 301. Air pump; 302. Conduit; 303. Solenoid valve; 4. Sealing door; 401. Sealing gasket; 402. Fastening screw; 5. Compression exhaust mechanism; 501. Extrusion plate; 502. Heat insulation rod; 503. Connecting plate; 504. Electric telescopic rod; 6. PLC controller. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0017] Specific implementation examples are given below.

[0018] See Figures 1-3 In this embodiment of the utility model, the straw carbonization and returning device includes a carbonization furnace 1, an oxygen exhaust mechanism 3, a sealing door 4, and a compression exhaust mechanism 5. The carbonization furnace 1 is wrapped with a heat insulation layer on one side. A stainless steel partition plate 101 is fixed inside the carbonization furnace 1. A coal combustion chamber 102 is located on the lower side of the stainless steel partition plate 101 for coal combustion. A carbonization chamber 103 is located on the upper side of the stainless steel partition plate 101 for placing the straw to be carbonized. The sealing door 4 is rotatably connected to the carbonization furnace 1 via a hinge. The sealing door 4 is used to seal the carbonization chamber 103. A sealing gasket 401 is fixed on the sealing door 4. When the sealing door 4 is closed, the sealing gasket 401 fits tightly against the carbonization furnace 1, reducing air leakage. A fastening screw 402 is detachably installed on one side of the sealing door 4 and screwed onto the carbonization furnace 1. The fastening screw 402 is used to fix the sealing door 4 and the carbonization furnace 1 together. An oxygen exhaust mechanism 3 connected to the top of the carbonization furnace 1 is installed. A compression exhaust mechanism 5 inserted into the left side of the carbonization furnace 1 is installed. In use, the straw is first placed into the carbonization chamber 103, and then the compression exhaust mechanism 5 is used to compact the straw and discharge a large amount of air mixed with the straw, and reduce the voids inside the straw, improve the heat conduction efficiency, and make the heating more uniform. Then, the sealing door 4 is closed and the fastening screw 402 is tightened. Then, the air in the carbonization furnace 1 is discharged through the oxygen exhaust mechanism 3 to reduce the oxygen content in the carbonization furnace 1 and prevent the straw from being over-burned or oxidized during carbonization.

[0019] The top of the carbonization furnace 1 is fixed with an exhaust pipe 2, and a one-way valve 201 is installed on the exhaust pipe 2. The one-way valve 201 allows the gas inside the carbonization furnace 1 to pass through the exhaust pipe 2 and be discharged to the outside, while the outside gas cannot pass through the exhaust pipe 2 and enter the carbonization furnace 1. The water vapor, carbon monoxide and carbon dioxide generated during carbonization are discharged from the exhaust pipe 2.

[0020] The oxygen exhaust mechanism 3 includes an air pump 301, a conduit 302, and a solenoid valve 303. The air pump 301 is fixed to the top of the carbonization furnace 1. The air intake end of the air pump 301 is connected to the conduit 302, which is inserted into the carbonization furnace 1. The solenoid valve 303 is installed on the conduit 302. In use, the air pump 301 and the solenoid valve 303 are turned on to extract the air from the carbonization furnace 1. Then, the air pump 301 and the solenoid valve 303 are turned off.

[0021] The compression and exhaust mechanism 5 includes: a compression plate 501, a heat insulation rod 502, a connecting plate 503, and an electric telescopic rod 504. The compression plate 501 is located on the left side inside the carbonization furnace 1. Two heat insulation rods 502, made of heat insulation material, are fixed on the compression plate 501 and penetrate the carbonization furnace 1. The heat insulation rods 502 are slidably connected to the carbonization furnace 1. A sealing ring is provided at the connection between the heat insulation rods 502 and the carbonization furnace 1 to prevent air leakage. The left end of the heat insulation rod 502 is fixed to the connecting plate 503. Two electric telescopic rods 504 are fixed on the outside of the carbonization furnace 1. The telescopic ends of the electric telescopic rods 504 are fixed to the connecting plate 503. In use, the electric telescopic rods 504 drive the connecting plate 503, the heat insulation rods 502, and the compression plate 501 to move, so that the compression plate 501 compresses the straw inside the carbonization furnace 1.

[0022] A PLC controller 6 is fixedly installed on the outside of the carbonization furnace 1. The air pump 301, solenoid valve 303, and electric telescopic rod 504 are all controlled by the PLC controller 6.

[0023] Working principle: When using this straw carbonization and returning-to-field device, the person first places the straw into the carbonization chamber 103. The electric telescopic rod 504 drives the connecting plate 503, the heat insulation rod 502, and the extrusion plate 501 to move, so that the extrusion plate 501 extrudes the straw in the carbonization furnace 1, expelling a large amount of air mixed with the straw and reducing the voids inside the straw, improving heat conduction efficiency and making the heating more uniform. Then, the sealing door 4 is closed and the fastening screw 402 is tightened. Then, the air in the carbonization furnace 1 is discharged through the oxygen discharge mechanism 3, reducing the oxygen content in the carbonization furnace 1. Finally, the person places coal into the coal combustion chamber 102 for combustion, thereby heating and carbonizing the straw in the carbonization chamber 103.

[0024] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0025] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A device for charring and returning straw to the field, characterized by, The system includes a carbonization furnace (1), an oxygen exhaust mechanism (3), a sealing door (4), and a compression exhaust mechanism (5). A stainless steel partition plate (101) is fixed inside the carbonization furnace (1). A coal combustion chamber (102) is located on the lower side of the stainless steel partition plate (101), and a carbonization chamber (103) is located on the upper side of the stainless steel partition plate (101). The sealing door (4) is rotatably connected to the carbonization furnace (1) via a hinge and is used to seal the carbonization chamber (103). An oxygen exhaust mechanism (3) is installed on the top of the carbonization furnace (1) and communicates with it. A compression exhaust mechanism (5) is installed on the left side of the carbonization furnace (1) and inserted into it. The oxygen exhaust mechanism (3) includes an air pump (301), a conduit (302), and a solenoid valve (303). The air pump (301) is fixed to the carbonization furnace (1). At the top, the suction end of the air pump (301) is connected to the conduit (302), the conduit (302) is inserted into the carbonization furnace (1), and an electromagnetic valve (303) is installed on the conduit (302). The compression exhaust mechanism (5) includes: an extrusion plate (501), a heat insulation rod (502), a connecting plate (503), and an electric telescopic rod (504). The extrusion plate (501) is located on the left side inside the carbonization furnace (1). Two heat insulation rods (502) penetrating the carbonization furnace (1) are fixed on the extrusion plate (501). The heat insulation rods (502) are slidably connected to the carbonization furnace (1). The left end of the heat insulation rods (502) is fixed to the connecting plate (503). Two electric telescopic rods (504) are fixed on the outside of the carbonization furnace (1). The telescopic ends of the electric telescopic rods (504) are fixed to the connecting plate (503).

2. The device according to claim 1, wherein A sealing gasket (401) is fixed on the sealing door (4), and a fastening screw (402) that is screwed onto the carbonization furnace (1) is detachably installed on one side of the sealing door (4).

3. The device according to claim 1, wherein The top of the carbonization furnace (1) is fixed with an exhaust pipe (2), and a one-way valve (201) is installed on the exhaust pipe (2).

4. The straw carbonization and returning-to-field device according to claim 1, characterized in that, A PLC controller (6) is fixedly installed on the outside of the carbonization furnace (1). The air pump (301), solenoid valve (303), and electric telescopic rod (504) are all controlled by the PLC controller (6).

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