A high-temperature aerobic fermentation fertilizer of livestock and poultry manure and straw suitable for saline-alkali land and its preparation method

Abstract

This invention discloses a high-temperature aerobic fermentation fertilizer made from livestock and poultry manure and straw suitable for saline-alkali land, and its preparation method, relating to the field of mixed fertilizer technology. The apparatus for preparing this high-temperature aerobic fermentation fertilizer made from livestock and poultry manure and straw suitable for saline-alkali land includes a fermentation drum. A feed cover is movably connected inside the fermentation drum, and a discharge cover is movably connected to the outer wall of the fermentation drum. A feed cover is fixedly connected to the right side of the fermentation drum. The method for preparing this high-temperature aerobic fermentation fertilizer made from livestock and poultry manure and straw suitable for saline-alkali land involves rotating the fermentation drum around a fixed axis, turning over the internal pile. An inner convex plate scoops up the bottom pile material and then throws the corresponding pile material downwards, dispersing the bottom pile material onto the top. This allows the pile to maintain a more even temperature during fermentation, resulting in higher microbial activity and significantly improved fermentation efficiency.

Description

Technical Field

[0001] This invention relates to the field of mixed fertilizer technology, specifically to a high-temperature aerobic fermentation fertilizer made from livestock and poultry manure and straw suitable for saline-alkali land, and its preparation method. Background Technology

[0002] The proper application of fertilizers can effectively improve the soil structure of saline-alkali land and promote crop growth. At the same time, the nutrients in fertilizers can neutralize some of the alkalinity and reduce the harm of salt to crops. In addition, this can also enhance the productivity of the land.

[0003] Chinese patent application number 202111432317.9 discloses a fermentation device for preparing bio-fertilizer, comprising: a tank assembly, a feeding assembly, a mixing assembly, and a discharging assembly. The tank assembly includes a fermentation tank and a ladder, the ladder being fixedly connected to the side wall of the fermentation tank, and a support unit connected to the ground being provided at the lower end of the fermentation tank. The feeding assembly includes a feeding port provided at the upper end of the fermentation tank and a feeding hopper fixedly connected to the upper side of the feeding port. A feeding unit corresponding to the feeding hopper is provided on the side wall of the fermentation tank, and a sealing unit is provided on the outer side of the feeding hopper.

[0004] During the composting process of mixing livestock and poultry manure with straw, the gaps in the compost pile are easily filled by the manure, causing the temperature in the center of the pile to become too high during fermentation. This high temperature reduces the activity of microorganisms and thus affects the efficiency of fermentation. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a high-temperature aerobic fermentation fertilizer of livestock and poultry manure and straw suitable for saline-alkali land, and its preparation method, thereby solving the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a high-temperature aerobic fermentation fertilizer made from livestock and poultry manure and straw suitable for saline-alkali land, wherein the high-temperature aerobic fermentation fertilizer for saline-alkali land improvement is prepared from the following raw materials in parts by weight:

[0007] 45-65 portions of livestock and poultry manure;

[0008] Crush 35-55 parts of straw;

[0009] 8-20 parts soil conditioner;

[0010] The soil conditioner is one or more of the following: phosphogypsum, humic acid, and weathered coal.

[0011] Optionally, add 0.1-0.5 parts of functional microbial inoculant.

[0012] Preferably, the initial carbon-nitrogen ratio of the raw materials after mixing is 20:1 to 30:1, and the initial moisture content is 50%-65%; the temperature of the high-temperature aerobic fermentation stage is maintained at 65-70℃ for at least five days; and the pH value of the finished fertilizer is 6.0-7.5, and the organic matter content is ≥40%.

[0013] A device for preparing high-temperature aerobic fermentation fertilizer of livestock and poultry manure and straw suitable for saline-alkali land includes a fermentation drum. A feed cover is movably connected inside the fermentation drum, and a discharge cover is movably connected to the outer wall of the fermentation drum. A feed cover is fixedly connected to the right side of the fermentation drum, and a feed inlet is provided on the right side of the feed cover. A discharge cover is fixedly connected to the left side of the fermentation drum, and a closable discharge outlet is provided on the left side of the discharge cover. A temperature controller is installed inside the fermentation drum.

[0014] The flipping mechanism includes:

[0015] A fixed shaft is provided inside the fermentation drum. The outer wall of the fixed shaft is fixedly connected to the feed cover and the discharge cover, and the temperature controller is fixedly connected to the bottom of the fixed shaft.

[0016] A collection plate, wherein the collection plate is disposed on top of the fermentation drum;

[0017] The fixing frame is provided in two parts, and both fixing frames are fixedly connected to the bottom of the assembly plate. Both fixing frames are movably connected to the fixing shaft through bearings.

[0018] The inner convex plate is provided in several parts, and all the inner convex plates are movably connected to the inner wall of the fermentation drum.

[0019] Preferably, a drive motor is fixedly connected to the bottom of the collection plate, and a pulley is fixedly connected to the output shaft of the drive motor, and the pulley is movably connected to the feed cover.

[0020] Preferably, the fermentation drum is provided with a base at the bottom, and two positioning columns are fixedly connected to the top of the base. The top of each of the two positioning columns is rotatably connected to the left side of the collecting plate. The front and back of the collecting plate are movably connected to the right side of the positioning columns, and the bottom of the discharging telescopic rod is movably connected to an extension column. The extension columns are all fixedly connected to the top of the base.

[0021] Preferably, the ventilation mechanism includes an outer shell, which is movably connected to the outer wall of the fermentation drum. A directional rod is fixedly connected to the top of the outer shell, and the top of the directional rod is fixedly connected to a collection plate. Two partition plates are fixedly connected inside the outer shell, both of which are located in the upper part of the fermentation drum. A first motor is fixedly connected to the bottom of each partition plate. A first fan blade is fixedly connected to the top output shaft of the first motor inside the partition plate. Multiple fine holes are provided on the inner convex plate, and ventilation slots are provided on the outer wall of the fermentation drum at corresponding positions on the inner convex plate.

[0022] Preferably, a second motor is fixedly connected to the right end of the fixed shaft via a bracket. A second fan blade is fixedly connected to the left output shaft of the second motor inside the fixed shaft. The left side of the fixed shaft is a closed structure. A positioning ring is fixedly connected to the left side of the second fan blade inside the fixed shaft. An inner guide frame is fixedly connected to the left side of the positioning ring inside the fixed shaft. An inner closing plate is movably connected to the right side of the inner guide frame to the left side of the positioning ring. A first spring is fixedly connected to the left side of the inner closing plate. The left side of the outer shell is fixedly connected to the positioning ring. An exhaust port is provided at the bottom of the outer shell. An outer closing plate is movably connected to the bottom of the exhaust port. An inner support plate is fixedly connected to the top of the outer closing plate. A second spring is fixedly connected to the top of the inner support plate inside the exhaust port. Multiple openings are provided at the top of the fixed shaft.

[0023] A method for preparing a high-temperature aerobic fermentation fertilizer of livestock and poultry manure and straw suitable for saline-alkali land includes the following steps:

[0024] S1. Raw material pretreatment: Adjust the moisture content of livestock and poultry manure to 70%-80%, and crush the straw to a length of 1-5cm;

[0025] S2. Mixing: Mix 40-60 parts by weight of pretreated livestock and poultry manure, 35-55 parts by weight of crushed straw, and 8-20 parts by weight of soil conditioner evenly, and adjust the moisture content of the mixture to 50%-65% and the carbon-nitrogen ratio to 20:1-30:1; the soil conditioner is one or more of phosphogypsum, humic acid, and weathered coal.

[0026] S3. High-temperature aerobic fermentation: The mixed materials are put into the fermentation drum for aerobic fermentation. The temperature of the pile is controlled at 65-70℃ for at least 5 days by the temperature controller. During this period, the pile is turned regularly by the turning mechanism and ventilated by the ventilation mechanism to maintain the aerobic state.

[0027] S4. Aging: The material after high-temperature fermentation is piled up and aged under natural conditions for 15-30 days, during which time it is turned over 1-3 times to obtain the organic fertilizer.

[0028] This invention provides a high-temperature aerobic fermentation fertilizer made from livestock and poultry manure and straw suitable for saline-alkali land, and its preparation method. It has the following beneficial effects:

[0029] 1. This invention relates to a high-temperature aerobic fermentation fertilizer of livestock and poultry manure and straw suitable for saline-alkali land, and its preparation method. The fermentation drum is driven to rotate around a fixed shaft, turning over the internal pile. The inner convex plate scoops up the bottom pile material and then throws the corresponding pile material down, so that the bottom pile material is scattered on the top. This allows the pile to maintain a more even temperature during fermentation, resulting in higher activity of microorganisms and greatly improving fermentation efficiency.

[0030] 2. This high-temperature aerobic fermentation fertilizer made from livestock and poultry manure and straw, suitable for saline-alkali land, and its preparation method, provides a rich nitrogen source through livestock and poultry manure, while straw can effectively maintain the porosity of the compost pile and improve the efficiency of aerobic fermentation.

[0031] 3. This high-temperature aerobic fermentation fertilizer for livestock and poultry manure and straw suitable for saline-alkali land and its preparation method utilize the rotation of the first fan blade to push the air at the top of the partition plate downwards, allowing high-pressure air to be discharged upwards from the bottom of the pile. This enables air to flow over a larger surface area of ​​the pile, and the high-temperature gas at the top of the fermentation drum circulates to the bottom of the fermentation drum to contact the pile, promoting temperature balance inside the fermentation drum and preventing the temperature at the bottom of the pile from being too low. This allows for better control of the fermentation temperature of the pile, maintaining high activity of microorganisms and thus improving fermentation efficiency.

[0032] 4. The high-temperature aerobic fermentation fertilizer of livestock and poultry manure and straw suitable for saline-alkali land and its preparation method, through the rotation of the second fan blade, allows external air to enter the interior of the fixed shaft. The fresh air entering the fixed shaft is discharged from the fine holes on the inner convex plate with the airflow, making better contact with the pile, allowing microorganisms to have better contact with oxygen, avoiding the lack of oxygen and decreased activity of microorganisms during the fermentation process, thereby improving the fermentation efficiency.

[0033] 5. This high-temperature aerobic fermentation fertilizer for livestock and poultry manure and straw suitable for saline-alkali land and its preparation method utilizes a second fan blade to push outside air into the inner convex plate. The fresh air then flows upward inside the fermentation drum, coming into contact with the hot airflow inside the drum. The fresh air also comes into contact with the hot air at the top of the fermentation drum, thus preheating the drum. This prevents the fresh air from directly contacting the pile, which would cause a temporary drop in the pile temperature and affect the activity of microorganisms. This improves the fermentation efficiency during ventilation, thereby enhancing the overall fermentation efficiency. Attached Figure Description

[0034] Figure 1 This is a front-view stereoscopic structural diagram of the present invention;

[0035] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention viewed from below;

[0036] Figure 3 This is a schematic diagram of the three-dimensional structure of the back side of the present invention;

[0037] Figure 4 for Figure 2 Schematic diagram of cross-section structure;

[0038] Figure 5 This is a schematic diagram of the fermentation drum structure of the present invention;

[0039] Figure 6 This is a schematic diagram of the heater structure of the present invention;

[0040] Figure 7 This is a schematic diagram of the fixed shaft structure of the present invention;

[0041] Figure 8 for Figure 4 Enlarged structural diagram of section A in the middle;

[0042] Figure 9 for Figure 4 Enlarged structural diagram of section B in the middle;

[0043] Figure 10 for Figure 6 Enlarged structural diagram of section C

[0044] Figure 11 for Figure 7 Enlarged structural diagram of section D

[0045] In the diagram: 1. Fermentation drum; 2. Feed cover; 3. Discharge cover; 4. Temperature controller; 5. Tilting mechanism; 501. Fixing frame; 502. Collection plate; 503. Positioning column; 504. Base; 505. Extension column; 506. Discharge telescopic rod; 507. Inner convex plate; 508. Fixing shaft; 509. Drive motor; 6. Ventilation mechanism; 601. Outer shell; 602. Directional rod; 603. Divider plate; 604. First fan blade; 605. Second motor; 606. Second fan blade; 607. Inner guide frame; 608. Positioning ring; 609. Inner closing plate; 610. First spring; 611. Outer closing plate; 612. Inner support plate; 613. Second spring; 614. Exhaust port; 615. First motor. Detailed Implementation

[0046] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0047] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the invention, and should not be construed as limiting the invention.

[0048] Example 1: Please refer to Figure 1 This invention provides a technical solution: a high-temperature aerobic fermentation fertilizer made from livestock and poultry manure and straw suitable for saline-alkali land. The high-temperature aerobic fermentation fertilizer for saline-alkali land improvement is prepared from the following raw materials in parts by weight:

[0049] 45-65 portions of livestock and poultry manure;

[0050] Crush 35-55 parts of straw;

[0051] 8-20 parts soil conditioner;

[0052] The soil conditioner is one or more of the following: phosphogypsum, humic acid, and weathered coal.

[0053] Optionally, add 0.1-0.5 parts of functional microbial inoculant.

[0054] The initial carbon-to-nitrogen ratio of the raw materials after mixing is 20:1 to 30:1, and the initial moisture content is 50%-65%; the temperature of the high-temperature aerobic fermentation stage is maintained at 65-70℃ for at least five days; the pH value of the finished fertilizer is 6.0-7.5, and the organic matter content is ≥40%.

[0055] Mix 45-65 parts of livestock and poultry manure, 35-55 parts of crushed straw, and 8-20 parts of soil conditioner, and add 0.1-0.5 parts of functional microbial inoculant. Ferment at high temperature while maintaining an aerobic environment. After fermentation, pile the material under natural conditions for 15-30 days, turning it over 1-3 times during this period to obtain organic fertilizer.

[0056] Example 2: Please refer to Figure 1-7 Based on Embodiment 1, the present invention provides a technical solution:

[0057] A high-temperature aerobic fermentation fertilizer preparation device for livestock and poultry manure and straw suitable for saline-alkali land includes a fermentation drum 1, a feed cover 2 movably connected inside the fermentation drum 1, a discharge cover 3 movably connected to the outer wall of the fermentation drum 1, a feed cover 2 fixedly connected to the right side of the fermentation drum 1 with a feed inlet on the right side of the feed cover 2, a discharge cover 3 fixedly connected to the left side of the fermentation drum 1 with a closable discharge outlet on the left side of the discharge cover 3, a temperature controller 4 inside the fermentation drum 1, an openable cover on the feed inlet, and an openable cover on the discharge outlet.

[0058] The flipping mechanism 5 includes:

[0059] A fixed shaft 508 is installed inside the fermentation drum 1. The outer wall of the fixed shaft 508 is fixedly connected to the feed cover 2 and the discharge cover 3, and the temperature controller 4 is fixedly connected to the bottom of the fixed shaft 508.

[0060] Collection plate 502 is set on top of fermentation drum 1;

[0061] There are two fixed brackets 501, and both fixed brackets 501 are fixedly connected to the bottom of the assembly plate 502. Both fixed brackets 501 are movably connected to the fixed shaft 508 through bearings.

[0062] There are several inner convex plates 507, and all of them are movably connected to the inner wall of the fermentation drum 1.

[0063] The raw materials, which are mixed in the correct proportions, are fed into the feed cover 2 through the feed inlet. The cover on the feed inlet is then closed, and the temperature controller 4 is set to 68 degrees Celsius to maintain a stable temperature inside the fermentation drum 1.

[0064] The pile inside the fermentation drum 1 needs to be turned over to prevent excessively high temperatures from accumulating in the center of the pile. A drive motor 509 is fixedly connected to the bottom of the collection plate 502, and a pulley is fixedly connected to the output shaft of the drive motor 509, and the pulley is movably connected to the feed cover 2.

[0065] The drive motor 509 is started periodically, causing it to drive the feed cover 2 to rotate via the pulley. This further causes the fermentation drum 1 to rotate around the fixed shaft 508, continuously turning over the pile inside the fermentation drum 1. The inner convex plate 507 scoops up the bottom pile and throws the corresponding pile downwards as the fermentation drum 1 rotates, dispersing the bottom pile onto the top. During the turning process, the position of the temperature controller 4 remains unchanged. The turned pile is closer to the temperature controller 4 and can be heated by the temperature controller 4, preventing the pile at the edge from getting colder. With the continuous rotation of the fermentation drum 1, the temperature of the pile can be maintained more evenly.

[0066] The fermentation drum 1 is provided with a base 504 at the bottom. Two positioning columns 503 are fixedly connected to the top of the base 504. The top of the two positioning columns 503 is rotatably connected to the left side of the collection plate 502. The front and back of the collection plate 502 are movably connected to the right side of the positioning columns 503 with discharge telescopic rods 506. The bottom of the discharge telescopic rods 506 is movably connected to extension columns 505. The extension columns 505 are fixedly connected to the top of the base 504.

[0067] After fermentation is complete, open the cover of the discharge port on the discharge cover 3 and extend the discharge telescopic rod 506. The discharge telescopic rod 506 pushes up the collection plate 502 through the connection with the collection plate 502. The collection plate 502 will rotate around the movable connection between it and the positioning column 503, so that the fermentation drum 1 and the collection plate 502 will flip together, which can play the role of pouring out the material inside the fermentation drum 1 to complete the unloading.

[0068] Example 3: Please refer to Figure 1-11 Based on Embodiment 1 and Embodiment 2, the present invention provides a technical solution:

[0069] During the fermentation process, the material piles together, leading to poor ventilation. This causes a lack of oxygen for microorganisms during fermentation, resulting in a sharp decline in microbial activity, slower reproduction, and a very slow decomposition of organic matter, thus slowing down the fermentation process.

[0070] The ventilation mechanism 6 includes an outer shell 601, which is movably connected to the outer wall of the fermentation drum 1. A directional rod 602 is fixedly connected to the top of the outer shell 601, and the top of the directional rod 602 is fixedly connected to the collection plate 502. Two partition plates 603 are fixedly connected inside the outer shell 601. The partition plates 603 are both located in the upper part of the fermentation drum 1. A first motor 615 is fixedly connected to the bottom of each partition plate 603. The top output shaft of the first motor 615 is fixedly connected to a first fan blade 604 inside the partition plate 603. Multiple fine holes are provided on the inner convex plate 507, and ventilation grooves are provided on the outer wall of the fermentation drum 1 at the corresponding positions of the inner convex plate 507.

[0071] The first motor 615 drives the first fan blade 604 to rotate, pushing the air at the top of the partition plate 603 downwards, increasing the air pressure at the bottom of the partition plate 603, and allowing the air to enter the bottom of the positioning column 503. This allows the high-pressure air to pass through the fermentation drum 1 groove and enter between the inner convex plate 507 and the fermentation drum 1, and the air to be discharged through the fine holes on the inner convex plate 507. This allows the air to be discharged upwards from the bottom of the pile, allowing the air to flow over a larger pile surface, enabling the microorganisms in the pile to better contact the air inside the fermentation drum 1. At the same time, the high-temperature gas at the top of the fermentation drum 1 will circulate to the bottom of the fermentation drum 1 and contact the pile, promoting the temperature balance inside the fermentation drum 1 and preventing the temperature at the bottom of the pile from being too low.

[0072] The limited oxygen inside fermentation drum 1 allows the air inside fermentation drum 1 to be connected with the outside air, enabling the microorganisms inside fermentation drum 1 to obtain more sufficient oxygen. A second motor 605 is fixedly connected to the right end of the fixed shaft 508 via a bracket. The output shaft of the second motor 605 on the left side is fixedly connected to a second fan blade 606 inside the fixed shaft 508. The left side of the fixed shaft 508 is a closed structure. A positioning ring 608 is fixedly connected to the left side of the second fan blade 606 inside the fixed shaft 508. An inner guide frame 607 is fixedly connected to the left side of the positioning ring 608 inside the fixed shaft 508. An inner closing plate 609 is movably connected to the right side of the inner guide frame 607 on the left side of the positioning ring 608. A first spring 610 is fixedly connected to the left side of the inner closing plate 609. The left side of the outer shell 601 is fixedly connected to the positioning ring 608. An exhaust port 614 is provided at the bottom of the outer shell 601. An outer closing plate 611 is movably connected to the bottom of the exhaust port 614. An inner support plate 612 is fixedly connected to the top of the outer closing plate 611. A second spring 613 is fixedly connected to the top of the inner support plate 612 inside the exhaust port 614. Multiple openings are provided at the top of the fixed shaft 508.

[0073] The second motor 605 drives the second fan blade 606 to rotate, increasing the air pressure on the left side of the positioning ring 608. The gas pushes open the inner closing plate 609 and compresses the first spring 610, allowing external air to enter the fixed shaft 508. The new air entering the fixed shaft 508 is drawn into the space between the fermentation drum 1 and the outer shell 601 under the influence of the gas flowing inside the fermentation drum 1. The oxygen in the new air is discharged from the fine holes on the inner convex plate 507 with the airflow, making better contact with the pile and allowing the microorganisms to have better contact with oxygen.

[0074] Furthermore, the increased gas pressure inside the fermentation drum 1 will cause the outer shell 601 to increase. The excessive gas pressure will push the outer closing plate 611 downward and compress the second spring 613 to expel the excess air. When there is no ventilation inside the fermentation drum 1, the outer closing plate 611 will close the exhaust port 614 under the action of the second spring 613. At the same time, the inner closing plate 609 will close the right end of the fixed shaft 508 under the push of the first spring 610 and the positioning ring 608, thus preventing the air inside the fermentation drum 1 from interacting with the outside environment and affecting the temperature inside the fermentation drum 1.

[0075] Meanwhile, after the second blade 606 pushes the outside air into the inner convex plate 507, the fresh air flows upward under the action of the circulating airflow inside the fermentation drum 1 and comes into contact with the hot airflow inside the fermentation drum 1, thereby preheating the fresh air entering the fermentation drum 1 and preventing the fresh air entering the fermentation drum 1 from directly contacting the pile body, which would cause the temperature of the pile body to drop temporarily and affect the activity of microorganisms.

[0076] Example 4: Please refer to Figure 1-11 Based on Embodiments 1, 2, and 3, the present invention provides a technical solution:

[0077] A method for preparing a high-temperature aerobic fermentation fertilizer of livestock and poultry manure and straw suitable for saline-alkali land includes the following steps:

[0078] S1. Raw material pretreatment: Adjust the moisture content of livestock and poultry manure to 70%-80%, and crush the straw to a length of 1-5cm;

[0079] S2. Mixing: Mix 40-60 parts by weight of pretreated livestock and poultry manure, 35-55 parts by weight of crushed straw, and 8-20 parts by weight of soil conditioner evenly, and adjust the moisture content of the mixture to 50%-65% and the carbon-nitrogen ratio to 20:1-30:1; the soil conditioner is one or more of phosphogypsum, humic acid, and weathered coal.

[0080] S3. High-temperature aerobic fermentation: The mixed materials are put into the fermentation drum 1 for aerobic fermentation. The temperature of the pile is controlled at 65-70℃ for at least 5 days by the temperature controller 4. During this period, the pile is turned regularly by the turning mechanism 5 and ventilated by the ventilation mechanism 6 to maintain an aerobic state.

[0081] S4. Aging: The material after high-temperature fermentation is piled up and aged under natural conditions for 15-30 days, during which time it is turned over 1-3 times to obtain the organic fertilizer.

[0082] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A high-temperature aerobic fermentation fertilizer made from livestock and poultry manure and straw suitable for saline-alkali land, characterized in that: The high-temperature aerobic fermentation fertilizer for improving saline-alkali land is prepared from the following raw materials in parts by weight: 45-65 portions of livestock and poultry manure; Crush 35-55 parts of straw; 8-20 parts soil conditioner; The soil conditioner is one or more of the following: phosphogypsum, humic acid, and weathered coal. Optionally, add 0.1-0.5 parts of functional microbial inoculant.

2. The high-temperature aerobic fermentation fertilizer of livestock and poultry manure and straw suitable for saline-alkali land according to claim 1, characterized in that: The initial carbon-to-nitrogen ratio of the raw materials after mixing is 20:1 to 30:1, and the initial moisture content is 50%-65%; the temperature of the high-temperature aerobic fermentation stage is maintained at 65-70℃ for at least five days; the pH value of the finished fertilizer is 6.0-7.5, and the organic matter content is ≥40%.

3. A device for preparing a high-temperature aerobic fermentation fertilizer of livestock and poultry manure and straw suitable for saline-alkali land as described in claim 2, comprising a fermentation drum (1), characterized in that: The fermentation drum (1) is movably connected to the inside of the feed cover (2), and the fermentation drum (1) is movably connected to the outer wall of the feed cover (3). The feed cover (2) is fixedly connected to the right side of the fermentation drum (1), and the feed inlet is provided on the right side of the feed cover (2). The feed cover (3) is fixedly connected to the left side of the fermentation drum (1), and the feed outlet is provided on the left side of the feed cover (3). The temperature controller (4) is provided inside the fermentation drum (1). The flipping mechanism (5) includes: A fixed shaft (508) is set inside the fermentation drum (1). The outer wall of the fixed shaft (508) is fixedly connected to the feed cover (2) and the discharge cover (3), and the temperature controller (4) is fixedly connected to the bottom of the fixed shaft (508). A collection plate (502) is disposed on top of the fermentation drum (1); Two fixed frames (501) are provided, and both fixed frames (501) are fixedly connected to the bottom of the assembly plate (502). Both fixed frames (501) are movably connected to the fixed shaft (508) through bearings. The inner convex plate (507) is provided in several parts, and the inner convex plate (507) is movably connected to the inner wall of the fermentation drum (1).

4. The apparatus for preparing high-temperature aerobic fermentation fertilizer of livestock and poultry manure and straw suitable for saline-alkali land according to claim 3, characterized in that: The bottom of the collection plate (502) is fixedly connected to a drive motor (509), and a pulley is fixedly connected to the output shaft of the drive motor (509), and the pulley is movably connected to the feed cover (2).

5. The apparatus for preparing high-temperature aerobic fermentation fertilizer of livestock and poultry manure and straw suitable for saline-alkali land according to claim 4, characterized in that: The fermentation drum (1) is provided with a base (504) at the bottom. Two positioning columns (503) are fixedly connected to the top of the base (504). The top of the two positioning columns (503) is rotatably connected to the left side of the collection plate (502). The front and back of the collection plate (502) are movably connected to the discharge telescopic rod (506) on the right side of the positioning column (503). The bottom of the discharge telescopic rod (506) is movably connected to the extension column (505). The extension column (505) is fixedly connected to the top of the base (504).

6. The apparatus for preparing high-temperature aerobic fermentation fertilizer of livestock and poultry manure and straw suitable for saline-alkali land according to claim 5, characterized in that: The ventilation mechanism (6) includes an outer shell (601), which is movably connected to the outer wall of the fermentation drum (1). A directional rod (602) is fixedly connected to the top of the outer shell (601), and the top of the directional rod (602) is fixedly connected to the collection plate (502). Two partition plates (603) are fixedly connected inside the outer shell (601). The partition plates (603) are all located in the upper part of the fermentation drum (1). A first motor (615) is fixedly connected to the bottom of each partition plate (603). The top output shaft of the first motor (615) is fixedly connected to a first fan blade (604) inside the partition plate (603). Multiple fine holes are provided on the inner convex plate (507). A ventilation groove is provided on the outer wall of the fermentation drum (1) at the corresponding position of the inner convex plate (507).

7. The apparatus for preparing high-temperature aerobic fermentation fertilizer of livestock and poultry manure and straw suitable for saline-alkali land according to claim 6, characterized in that: The right end of the fixed shaft (508) is fixedly connected to a second motor (605) via a bracket. The output shaft on the left side of the second motor (605) is fixedly connected to a second fan blade (606) inside the fixed shaft (508). The left side of the fixed shaft (508) is a closed structure. Inside the fixed shaft (508), to the left of the second fan blade (606), a positioning ring (608) is fixedly connected. Inside the fixed shaft (508), to the left of the positioning ring (608), an inner guide frame (607) is fixedly connected. The right side of the inner guide frame (607), to the left of the positioning ring (608), is movably connected to... An inner closing plate (609) is fixedly connected to a first spring (610) on its left side. The outer shell (601) is fixedly connected to a positioning ring (608) on its left side. An exhaust port (614) is provided at the bottom of the outer shell (601). An outer closing plate (611) is movably connected to the bottom of the exhaust port (614). An inner support plate (612) is fixedly connected to the top of the outer closing plate (611). A second spring (613) is fixedly connected to the top of the inner support plate (612) inside the exhaust port (614). A plurality of openings are provided at the top of the fixed shaft (508).

8. A method for preparing a high-temperature aerobic fermentation fertilizer of livestock and poultry manure and straw suitable for saline-alkali land using the apparatus described in claim 7, characterized in that: Includes the following steps: S1. Raw material pretreatment: Adjust the moisture content of livestock and poultry manure to 70%-80%, and crush the straw to a length of 1-5cm; S2. Mixing: Mix 40-60 parts by weight of pretreated livestock and poultry manure, 35-55 parts by weight of crushed straw, and 8-20 parts by weight of soil conditioner evenly, and adjust the moisture content of the mixture to 50%-65% and the carbon-nitrogen ratio to 20:1-30:1; the soil conditioner is one or more of phosphogypsum, humic acid, and weathered coal. S3, High-temperature aerobic fermentation: The mixture is placed inside the fermentation drum (1) for aerobic fermentation. The temperature of the pile is controlled at 65-70℃ for at least 5 days by the temperature controller (4). During this period, the pile is turned regularly by the turning mechanism (5) and ventilated by the ventilation mechanism (6) to maintain an aerobic state. S4. Aging: The material after high-temperature fermentation is piled up and aged under natural conditions for 15-30 days, during which time it is turned over 1-3 times to obtain the organic fertilizer.

Images