Straw in-situ semi-carbonization field returning device

Abstract

The utility model discloses a straw in-situ semi-carbonization field returning device which comprises a supporting frame, a rotary cultivator is installed on the rear side of the supporting frame, a gas tank is installed on the rotary cultivator, a gas outlet of the gas tank is connected with a gas conveying hose, and the gas conveying hose is connected with a gas conveying steel pipe; the fire shielding cover is fixed on the support frame and is positioned on the front side of the rotary cultivator; the gas collecting pipe is connected with the gas conveying steel pipe; the flame spray guns are integrated on the gas collecting pipe; and the straw throwing mechanism is arranged on the fire shielding cover. Straw which is still not combusted is thrown to the position below the flame spray gun through the straw throwing mechanism to be combusted again, the straw combustion carbonization effect is guaranteed, the fire shielding cover restrains open fire from overflowing, the risk that fire cannot be controlled due to the fact that the open fire ignites the straw outside the fire shielding cover is avoided, the rotary cultivator conducts burying treatment on ash generated after straw combustion, and the environment is protected. The ash is buried in the soil, so that the degradation of the straws is accelerated, the unburnt straws are prevented from generating smoke to pollute the environment, and meanwhile, pest eggs on the earth surface and in the soil can be killed.

Description

Technical Field

[0001] This utility model relates to the field of agricultural machinery technology, and more specifically to a straw in-situ semi-carbonization and returning device. Background Technology

[0002] Comprehensive utilization of straw is an important aspect of agricultural development and a key direction for the development of modern agricultural industry technology systems. In recent years, the state has advocated returning straw to the field, which has played a certain role in promoting the comprehensive utilization of straw. However, there are also some problems in straw utilization. Straw returning technology, as one of the most convenient and simple methods of straw utilization, is relatively mature. Straw returning to the field mainly includes straw crushing and deep plowing, straw mulching, composting, burning, and animal feed returning. Straw returning to the field can effectively reduce pollution from burning, improve soil organic matter content, and improve soil bulk density, compaction, temperature, porosity, and moisture content. However, straw returning to the field also has some disadvantages. Straw is difficult to decompose after being returned to the field, and excessive straw returning may cause a large number of microorganisms to multiply, competing with plants for water and leading to reduced crop yields. Straw returning to the field increases soil looseness, reducing the chance of seed-soil contact, thus making germination difficult. In addition, straw returning to the field can easily lead to the occurrence of pests and diseases.

[0003] Currently, domestic scholars have conducted extensive research on straw carbonization and returning technology to the field, such as CN114868475A - a pollution-free straw returning vehicle. Straw carbonization and returning to the field can effectively avoid the negative impacts of excessive straw return. Biochar's effects on soil physicochemical properties and nutrients, crop yield and quality include improving soil structure, enhancing water and fertilizer retention capacity, increasing soil nutrient content, and promoting mycorrhizal growth, thereby increasing crop yield and quality. Burning straw and returning it to the field can prevent pests and diseases and improve the utilization efficiency of some nutrients in the straw.

[0004] However, the above-mentioned straw return vehicle still has some problems in use: (1) When the straw layer is thick, the flame gun cannot burn the straw deep inside, resulting in incomplete carbonization of the straw; (2) When the combustion chamber is moving, the left and right sides of the lower opening do not have the function of isolating the straw inside and outside the combustion chamber, which causes the straw inside the combustion chamber to ignite the straw outside the left and right sides of the combustion chamber when it is burning, thus posing a risk of uncontrollable fire and poor safety in use.

[0005] Therefore, how to provide a straw in-situ semi-carbonization and return-to-field device that ensures complete straw combustion and is safer to use is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0006] In view of this, the present invention provides a straw in-situ semi-carbonization and return-to-field device that ensures complete straw combustion and is safer to use.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A device for in-situ semi-carbonization and return of straw to the field includes:

[0009] A support frame is provided, the front of which can be attached to a traction machine. A rotary tiller is installed on the rear of the support frame. A gas tank is installed on the rotary tiller. The gas outlet of the gas tank is connected to a gas delivery hose. The gas delivery hose is connected to a gas delivery steel pipe. The gas delivery steel pipe is fixedly connected to the rotary tiller through a connecting rod. A gas valve is provided on the gas delivery steel pipe.

[0010] A fire shield is fixed on the support frame and located at the front of the rotary tiller, with the opening of the fire shield facing downwards.

[0011] A gas collecting pipe is located inside the fire shield and is connected to the gas supply steel pipe.

[0012] A flame gun, wherein multiple flame guns are connected to the gas collecting pipe, the multiple flame guns are arranged in a row, the flame direction of the flame guns is downward, and an igniter is provided inside the flame gun;

[0013] A straw throwing mechanism is installed on the fire shield and is used to throw unburned straw to a position below the flame gun.

[0014] As can be seen from the above technical solution, compared with the prior art, this utility model discloses a straw in-situ semi-carbonization and returning device. During operation, the gas valve and igniter are opened, the igniter ignites the gas spray gun, and the gas spray gun burns the straw. The straw throwing mechanism throws the unburned straw after it has been burned by the gas spray gun to a position below the flame spray gun for re-burning, ensuring the carbonization effect of the straw combustion. In addition, the fire shield suppresses the overflow of open flames and avoids the risk of uncontrollable fire caused by open flames igniting the straw outside the fire shield. Then, the ash produced after the straw is burned is buried by a rotary tiller, so that the ash is buried in the soil, which accelerates the degradation of straw and prevents the unburned straw from producing smoke that pollutes the environment. At the same time, it can kill pest eggs on the surface and in the soil.

[0015] Furthermore, the straw throwing mechanism includes:

[0016] An electric motor, which is fixed to one side panel of the fire shield;

[0017] A rotating shaft is horizontally placed inside the fire shield. One end of the rotating shaft is fixedly connected to the output end of the motor, and the other end of the rotating shaft is rotatably connected to the other side plate of the fire shield.

[0018] The throwing rods, which consist of multiple rods fixed to the rotating shaft, are used to throw unburned straw to a position below the flame gun.

[0019] The beneficial effects of adopting the above technical solution are: the motor drives the rotating shaft to rotate, and the rotating shaft drives the throwing bar on it to throw the straw that is still unburned after being burned by the gas spray gun to the position below the flame spray gun for re-burning, thus ensuring the carbonization effect of straw combustion.

[0020] Furthermore, the flame guns are arranged in two rows, one in front of the other, and the rotating shaft is located between the two rows of flame guns.

[0021] The beneficial effects of adopting the above technical solution are as follows: the flame guns located in the front row burn the straw once, the flame guns located in the rear row burn the straw a second time, and the throwing bar on the rotating shaft can throw the unburned straw to the positions of the flame guns in the front row and the flame guns in the rear row respectively during the rotation, thereby improving the effect of complete combustion and carbonization of straw.

[0022] Furthermore, the outer wall of the fire shield is provided with multiple ventilation holes.

[0023] The beneficial effects of adopting the above technical solution are: external air enters the fire shield through the vents to ensure the full combustion of the gas in the middle of the fire shield and to ensure the carbonization of the straw.

[0024] Furthermore, the bottom ends of the left and right side panels of the fire shield are fixed with straw partitions for separating the straw inside and outside the fire shield.

[0025] The beneficial effects of adopting the above technical solution are: when the fire shield is moving, the straw partitions on the left and right sides of the fire shield can be inserted into the straw layer, thereby separating the straw inside and outside the fire shield and preventing the straw burning on the inside of the fire shield from igniting the straw on the left and right sides of the fire shield, thus preventing the risk of an uncontrollable fire.

[0026] Furthermore, the fire shield is positioned away from the rotary tiller.

[0027] The beneficial effects of adopting the above technical solution are: lengthening the distance between the front-end rapid carbonization and the rear-end rotary tillage, creating a short cooling zone between straw carbonization and rotary tillage, increasing the brittleness of the straw, and extending the service life of the rotary tiller by reducing the contact between the rotary tiller and the open flame.

[0028] Furthermore, the support frame is provided with a support wheel frame, which is located on the front side of the fire shield.

[0029] The beneficial effect of adopting the above technical solution is that it improves the stability of the entire device.

[0030] Furthermore, a temperature sensor is fixed inside the fire shield, and an alarm is fixed on the support frame. Both the temperature sensor and the alarm are electrically connected to the traction machine.

[0031] The beneficial effects of adopting the above technical solution are as follows: When the carbonization work is completed, if the temperature sensor detects that the temperature of the fire shield is high, the alarm will sound to remind relevant personnel that the fire shield is too hot and should not be touched to prevent burns. When the temperature sensor detects that the temperature of the fire shield has dropped to a certain temperature, the alarm will stop sounding. At this time, it is convenient to remind personnel that they can touch the fire shield, such as to sit down and rest on the fire shield, or to carry out maintenance work on the flame gun inside the fire shield. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0033] Figure 1 A schematic diagram of the structure of a straw in-situ semi-carbonization and returning device provided by this utility model.

[0034] Figure 2 for Figure 1 A magnified schematic diagram of the structure of part A in the middle.

[0035] Figure 3 This is a front view schematic diagram of the fire shield. Detailed Implementation

[0036] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0037] like Figures 1-3 As shown in the figure, this utility model embodiment discloses a straw in-situ semi-carbonization and returning device, characterized in that it includes:

[0038] Support frame 1, the front side of support frame 1 can be attached to traction machine, rotary tiller 2 is installed on the rear side of support frame 1, gas tank 3 is installed on rotary tiller 2, gas tank 3 is connected to gas delivery hose 4 at the gas outlet, gas delivery hose 4 is connected to gas delivery steel pipe 5, gas delivery steel pipe 5 is fixedly connected to rotary tiller 2 through connecting rod 6, and gas valve 7 is provided on gas delivery steel pipe 5;

[0039] Fire shield 8 is fixed on support frame 1 and located in front of rotary tiller 2, with the opening of fire shield 8 facing downwards.

[0040] Gas collecting pipe 9 is located inside fire shield 8 and is connected to gas transmission steel pipe 5.

[0041] Flame gun 10, multiple flame guns 10 are connected to gas collection pipe 9, multiple flame guns 10 are arranged in a row, the flame direction of the flame gun 10 is arranged downward, and the flame gun 10 is equipped with an igniter 15 inside.

[0042] The straw throwing mechanism 11 is installed on the fire shield 8 and is used to throw unburned straw to a position below the flame gun 10.

[0043] The straw throwing mechanism 11 includes:

[0044] Motor 111, motor 111 is fixed on one side plate of fire shield 8;

[0045] A rotating shaft 112 is horizontally placed inside the fire shield 8. One end of the rotating shaft 112 is fixedly connected to the output end of the motor 111, and the other end of the rotating shaft 112 is rotatably connected to the other side plate of the fire shield 8.

[0046] The throwing rods 113 are multiple rods fixed on the rotating shaft 112, used to throw unburned straw to a position below the flame gun 10.

[0047] The flame guns 10 are arranged in two rows, one in front of the other, with the rotating shaft 112 located between the two rows of flame guns 10.

[0048] The outer wall of the fire shield 8 is provided with multiple ventilation holes 81.

[0049] The bottom ends of the left and right side panels of the fire cover 8 are fixed with straw partitions 82 for separating the straw inside and outside the fire cover 8.

[0050] Fire shield 8 is placed away from rotary tiller 2.

[0051] The support frame 1 is equipped with a support wheel frame 12, which is located on the front side of the fire shield 8.

[0052] A temperature sensor 13 is fixed inside the fire shield 8, and an alarm 14 is fixed on the support frame 1. Both the temperature sensor 13 and the alarm 14 are electrically connected to the traction motor.

[0053] This device can be equipped with a tractor for towing. In use, the gas valve and igniter are opened, igniting the gas-fired nozzle. The nozzle burns the straw, and a motor drives a rotating shaft. This shaft, along with a throwing bar, throws any unburned straw below the nozzle for further burning, ensuring effective carbonization. The ash is then buried in the soil by a rotary tiller, accelerating straw degradation and preventing smoke pollution from unburned straw. It also kills insect eggs on the surface and in the soil. Furthermore, the device features two rows of flame-fired nozzles to further accelerate and enhance the carbonization process.

[0054] In addition, when the fire shield is in motion, the straw partitions on the left and right sides of the fire shield can be inserted into the straw layer to separate the straw inside and outside the fire shield. This prevents the burning straw on the inside of the fire shield from igniting the straw on the left and right sides of the fire shield, thus preventing the fire from becoming uncontrollable and improving the safety of the device.

[0055] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0056] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A device for semi-carbonizing and returning straw in situ, characterized in that, Include: Support frame (1), the front side of the support frame (1) can be hung on the traction machine, the rear side of the support frame (1) is installed with rotary cultivator (2), the rotary cultivator (2) is installed with gas tank (3), the gas outlet of the gas tank (3) is connected with gas conveying hose (4), the gas conveying hose (4) is connected with gas conveying steel pipe (5), the gas conveying steel pipe (5) is fixedly connected with the rotary cultivator (2) through connecting rod (6), the gas conveying steel pipe (5) is provided with gas valve (7); Fire cover (8), the fire cover (8) is fixed on the support frame (1) and is located at the front side of the rotary cultivator (2), the cover opening of the fire cover (8) is arranged downward; Gas collecting pipe (9), the gas collecting pipe (9) is located inside the fire cover (8), the gas collecting pipe (9) is connected with the gas conveying steel pipe (5); Flame spray gun (10), the flame spray gun (10) is connected with the gas collecting pipe (9), the flame spray gun (10) is arranged in rows, the flame spray gun (10) is arranged downward, the flame spray gun (10) is provided with lighter (15) inside; Straw throwing mechanism (11), the straw throwing mechanism (11) is arranged on the fire cover (8) and is used for throwing unburned straw to the position below the flame spray gun (10).

2. The device for semi-charring straw in situ and returning to field according to claim 1, characterized in that, The straw throwing mechanism (11) comprises: Motor (111), the motor (111) is fixed on one side plate of the fire cover (8); Rotating shaft (112), the rotating shaft (112) is transversely arranged in the fire cover (8), one end of the rotating shaft (112) is fixedly connected with the output end of the motor (111), the other end of the rotating shaft (112) is rotatably connected with the other side plate of the fire cover (8); Throwing rod (113), the throwing rod (113) is fixed on the rotating shaft (112) and is used for throwing unburned straw to the position below the flame spray gun (10).

3. The device according to claim 2, characterized in that, The flame spray gun (10) is arranged in two rows, the rotating shaft (112) is located between the two rows of flame spray guns (10).

4. The device according to claim 1, wherein The outer wall of the fire cover (8) is provided with a plurality of air holes (81).

5. The device according to claim 1, wherein The bottom end of the left and right side plates of the fire cover (8) is fixed with straw partition plate (82) for separating the straw inside and outside the fire cover (8).

6. The device for semi-charring straw in situ and returning to field according to claim 1, characterized in that, The fire cover (8) is arranged away from the rotary cultivator (2).

7. The device according to claim 1, wherein The support frame (1) is provided with support wheel frame (12), the support wheel frame (12) is located at the front side of the fire cover (8).

8. The device according to claim 1, wherein The fire cover (8) is fixed with temperature sensor (13) inside, the support frame (1) is fixed with alarm (14), the temperature sensor (13) and the alarm (14) are electrically connected with the traction machine.

Images