Method for preparing fertilizer from air purification material

Abstract

The invention relates to the technical field of agricultural environment, in particular to a method for preparing an air purification material into a fertilizer, which comprises the following steps: S1, preparing raw materials: taking fresh herbivorous animal manure, and adjusting the water content to 80-85%; s2, adding an additive: adding the feces into a stirring device, adding diatomite accounting for 20% of the mass of the livestock and poultry feces, nano calcium titanate accounting for 5% of the mass of the livestock and poultry feces and 30% hydrogen peroxide accounting for 10% of the mass of the livestock and poultry feces into the feces in the stirring device, and uniformly stirring; s3, heating reaction: heating the mixture to a micro-boiling state, then adding the mixed acid solution according to a ratio of 1Kg: 1L, uniformly stirring again, and continuously keeping the micro-boiling state. According to the method for preparing the fertilizer from the air purification material, when the material is transferred to the pressure container, the material on the outer wall of the stirring plate and the inner wall of the stirring tank can be scraped without additional driving, so that the cost of preparing the fertilizer from the air purification material is saved.

Description

Technical Field

[0001] The present invention relates to the technical field of agricultural environment, and specifically relates to a method for preparing air purification materials and fertilizers. Background Art

[0002] In traditional agriculture, the conventional treatment of livestock and poultry manure is to use it for agricultural production after composting. However, in order to improve the yield and quality of meat, eggs, and milk, and for disease prevention and treatment, a large amount of nutrient components rich in trace elements and various additives are added to the feed. After livestock and poultry consume the feed, a large part of these substances will be excreted in the form of the original in feces and urine. Therefore, in addition to containing protein, amino acids, cellulose, and lignin, livestock and poultry manure also contains a large amount of heavy metals such as copper, iron, and zinc, as well as harmful substances such as antibiotics and growth promoters. The traditional composting method cannot effectively remove these harmful substances. These harmful substances enter the soil with manure, which will cause serious harm to agricultural products and the environment.

[0003] Currently, there is already a method for preparing air purification materials and liquid compound fertilizers from livestock and poultry manure (patent for invention, application number: 201710112230.0, a method for preparing pollutant purification materials and compound fertilizers from livestock and poultry manure). During the preparation process of air purification materials and liquid compound fertilizers, a stirring device is required. During the process of transporting the materials in the stirring device to a pressure vessel, a part of the materials will adsorb on the inner wall of the stirring tank and the outer wall of the stirring plate, resulting in material waste. Moreover, in order to ensure the quality of air purification materials and liquid compound fertilizers before the next preparation, the stirring device also needs to be cleaned.

[0004] To solve the above problems, we made improvements and proposed a method for preparing air purification materials and fertilizers. Summary of the Invention

[0005] To solve the above technical problems, the present invention provides the following technical solutions:

[0006] The present invention provides a method for preparing air purification materials and fertilizers, including the following steps:

[0007] S1 Raw material preparation: Take fresh herbivorous animal manure and adjust the moisture content to 80% - 85%;

[0008] S2 Adding additives: Add the manure to a stirring device, and add 20% of diatomaceous earth, 5% of nano-calcium titanate, and 10% of hydrogen peroxide with a concentration of 30% based on the mass of the livestock and poultry manure to the manure in the stirring device, and stir evenly;

[0009] S3 Heating reaction: Heat the mixture to a slightly boiling state, then add a mixed acid solution in a ratio of 1 Kg:1 L, stir evenly again, and continue to maintain the slightly boiling state;

[0010] S4 Pressure treatment: Place the reactants in a pressure vessel with at least 50% of the space left inside. Pump air into the vessel space to raise the pressure to 1 MPa, then hold the pressure for 60 minutes. After that, quickly release the pressure and evacuate to 100 Pa, and hold the pressure for 60 minutes;

[0011] S5 Solid-liquid separation: After the above treatment, the obtained mixture is subjected to solid-liquid separation to obtain a solid and a liquid;

[0012] S6 Preparation of purification material: Dry the solid obtained in S5, and then add concentrated phosphoric acid for carbonization. The pollutant purification material can be obtained after drying;

[0013] S7 Preparation of liquid compound fertilizer: Add ammonia water to the liquid obtained in S5 to adjust the pH value to 6 - 8, and the liquid compound fertilizer can be obtained;

[0014] The stirring device includes a stirring tank. The top surface of the stirring tank is fixedly connected with a cross-shaped mounting plate through bolts. The center of the bottom surface of the cross-shaped mounting plate is rotatably connected with a rotating rod. The bottom of the rotating rod is fixedly connected with a stirring plate. Two rectangular scraping plates are symmetrically and slidably sleeved on the outer wall of the stirring plate. A driving mechanism for driving the rectangular scraping plates is installed on the upper part of the outer wall of the rotating rod;

[0015] The driving mechanism includes a threaded sleeve. A threaded part is provided on the outer wall of the rotating rod. The threaded sleeve is threadedly connected to the threaded part of the rotating rod. The outer wall of the threaded sleeve is coaxially rotatably connected with a movable sleeve. The bottom surface of the movable sleeve is coaxially rotatably connected with a circular plate. The bottom surface of the circular plate is symmetrically hinged with connecting plates, and the bottom ends of the connecting plates are hinged to the top surface of the rectangular scraping plate;

[0016] An installation cavity is provided inside the movable sleeve. A rectangular block with upper and lower openings is installed inside the installation cavity. Oblique slots are provided on both sides of the rectangular block. Slide columns are slidably connected inside the oblique slots of the rectangular block. A resisting straight rod is fixedly connected to the outer wall of the slide column. A clamping block is fixedly connected to one side of the rectangular block close to the threaded sleeve. A chute opening communicating with the installation cavity is provided on the inner wall of the movable sleeve. The clamping block is slidably connected to the chute opening on the movable sleeve, and a number of clamping grooves cooperating with the clamping block are provided on the outer wall of the threaded sleeve. The number of clamping grooves is distributed on the outer wall of the threaded sleeve in a circumferential array;

[0017] Two L-shaped connecting rods are also fixedly connected to the bottom surface of the circular plate. The bottom ends of the two L-shaped connecting rods are fixedly connected with the same annular scraping plate. The annular scraping plate is in sliding contact with the inner wall of the stirring tank.

[0018] As a preferred technical solution of the present invention, a T-shaped circular ring sliding sleeve is provided on the bottom surface of the movable sleeve, and a T-shaped circular ring slide rail that is slidably connected to the T-shaped circular ring sliding sleeve of the movable sleeve is coaxially and fixedly connected to the top surface of the circular plate. A through hole is provided at the center of the circular plate, and the rotating rod passes through the through hole of the circular plate.

[0019] As a preferred technical solution of the present invention, two multi-stage limit telescopic rods are symmetrically and fixedly installed on the bottom surface of the cross-shaped mounting plate, and the L-shaped movable ends of the multi-stage limit telescopic rods are fixedly connected to the outer wall of the movable sleeve.

[0020] As a preferred technical solution of the present invention, a driving motor is fixedly installed at the center of the top surface of the cross-shaped mounting plate, and the output shaft of the driving motor is coaxially and fixedly connected to the rotating rod.

[0021] As a preferred technical solution of the present invention, a spring is fixedly connected between the inner wall of the installation cavity of the rectangular block and the movable sleeve. The bottom end of the abutting straight rod extends into the interior of the rectangular block, and the top end of the abutting straight rod penetrates and extends to the outside of the movable sleeve.

[0022] As a preferred technical solution of the present invention, a discharge port with a valve is provided on the bottom surface of the mixing tank, and four support legs are symmetrically installed on the bottom surface of the mixing tank.

[0023] As a preferred technical solution of the present invention, the mixed acid solution is composed of 0.5 - 1 mol / L nitric acid and 0.2 - 0.5 mol / L phosphoric acid.

[0024] As a preferred technical solution of the present invention, the feces of herbivores in S1 are cow dung, horse dung or sheep dung.

[0025] The beneficial effect of the present invention is that in the method for preparing fertilizer from the air purification material, when transferring the material to the pressure vessel, by starting the driving motor, the driving motor drives the rotating rod to rotate in reverse. Under the action of the spring, the block is re-engaged with the card slot on the outer wall of the threaded sleeve as shown in the figure. The threaded sleeve will not rotate with the rotating rod. Further, the movable sleeve and the circular plate will move downward along with the threaded sleeve. The circular plate makes the rectangular scraper move outward through the connecting plate, scraping the material adsorbed on the outer wall of the stirring plate. At the same time, the circular plate will also drive the annular scraper to scrape the material on the inner wall of the mixing tank. The scraping of the material on the outer wall of the stirring plate and the inner wall of the mixing tank can be achieved without additional driving, saving the cost of preparing fertilizer from the air purification material. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention. In the drawings:

[0027] Figure 1 It is a three-dimensional schematic diagram of a stirring device for a method of preparing fertilizer from an air purification material according to the present invention;

[0028] Figure 2 It is a front view schematic diagram of a stirring device for a method of preparing fertilizer from an air purification material according to the present invention;

[0029] Figure 3 It is a top view schematic diagram of a stirring device for a method of preparing fertilizer from an air purification material according to the present invention;

[0030] Figure 4 It is a method of preparing fertilizer from an air purification material according to the present invention Figure 3 The cross-sectional schematic diagram at A-A in;

[0031] Figure 5 It is a method of preparing fertilizer from an air purification material according to the present invention Figure 5 The enlarged schematic diagram at A in;

[0032] Figure 6 It is a schematic diagram of the internal structure of a stirring tank for a method of preparing fertilizer from an air purification material according to the present invention;

[0033] Figure 7 It is a three-dimensional schematic diagram of the clamping connection between a clamping block and a threaded sleeve for a method of preparing fertilizer from an air purification material according to the present invention;

[0034] In the figure: 1, stirring tank; 2, cross mounting plate; 3, rotating rod; 4, stirring plate; 5, rectangular scraper; 6, threaded sleeve; 7, movable sleeve; 8, circular plate; 9, connecting plate; 10, multi-stage limit telescopic rod; 11, rectangular block; 12, inclined slot; 13, sliding column; 14, abutting straight rod; 15, clamping block; 16, L-shaped connecting rod; 17, annular scraper; 18, driving motor. Specific embodiments

[0035] The following is a description of the preferred embodiments of the present invention with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only for the purpose of illustrating and explaining the present invention, and are not used to limit the present invention.

[0036] Embodiment: A method of preparing fertilizer from an air purification material includes the following steps:

[0037] S1 Raw material preparation: Take fresh herbivorous animal feces and adjust the moisture content to 80% - 85%; the herbivorous animal feces are cow dung, horse dung or sheep dung.

[0038] S2 Adding additives: Add the feces into the stirring device, and add 20% diatomaceous earth, 5% nano-calcium titanate and 10% hydrogen peroxide with a concentration of 30% based on the mass of the livestock and poultry feces to the feces in the stirring device, and stir evenly;

[0039] S3 Heating Reaction: Heat the mixture to a gentle boil, then add the mixed acid solution in a ratio of 1 Kg:1 L. The mixed acid solution consists of 0.5 - 1 mol / L nitric acid and 0.2 - 0.5 mol / L phosphoric acid. Stir well again and continue to maintain the gentle boil state;

[0040] S4 Pressure Treatment: Place the reactants in a pressure vessel with at least 50% of the space left inside. Pump air into the vessel space to raise the pressure to 1 MPa, then hold the pressure for 60 minutes. After that, quickly release the pressure and evacuate to 100 Pa, and hold the pressure for 60 minutes;

[0041] S5 Solid-Liquid Separation: After the above treatment, perform solid-liquid separation on the resulting mixture to obtain a solid and a liquid;

[0042] S6 Preparation of Purification Material: Dry the solid obtained in S5, and then add concentrated phosphoric acid for carbonization. The pollutant purification material can be obtained after drying;

[0043] S7 Preparation of Liquid Compound Fertilizer: Add ammonia water to the liquid obtained in S5 to adjust the pH value to 6 - 8, and then the liquid compound fertilizer can be obtained;

[0044] As Figures 1-7 shown, the stirring device includes a stirring tank 1. The top surface of the stirring tank 1 is fixedly connected with a cross mounting plate 2 by bolts. The center of the bottom surface of the cross mounting plate 2 is rotatably connected with a rotating rod 3. The bottom of the rotating rod 3 is fixedly connected with a stirring plate 4. Two rectangular scraping plates 5 are symmetrically and slidably sleeved on the outer wall of the stirring plate 4. A driving mechanism for driving the rectangular scraping plates 5 is installed on the upper part of the outer wall of the rotating rod 3;

[0045] The driving mechanism includes a threaded sleeve 6. A threaded part is provided on the outer wall of the rotating rod 3. The threaded sleeve 6 is threadedly connected to the threaded part of the rotating rod 3. The outer wall of the threaded sleeve 6 is coaxially rotatably connected with a movable sleeve 7. The bottom surface of the movable sleeve 7 is coaxially rotatably connected with a circular plate 8. The bottom surface of the circular plate 8 is symmetrically hinged with connecting plates 9, and the bottom ends of the connecting plates 9 are hinged to the top surface of the rectangular scraping plate 5;

[0046] Two multi-stage limit telescopic rods 10 are symmetrically and fixedly installed on the bottom surface of the cross mounting plate 2. The L-shaped movable ends of the multi-stage limit telescopic rods 10 are fixedly connected to the outer wall of the movable sleeve 7.

[0047] A driving motor 18 is fixedly installed at the center of the top surface of the cross mounting plate 2. The output shaft of the driving motor 18 is coaxially fixedly connected with the rotating rod 3.

[0048] Two L-shaped connecting rods 16 are also fixedly connected to the bottom surface of the circular plate 8. The bottom ends of the two L-shaped connecting rods 16 are fixedly connected to the same annular scraping plate 17. The annular scraping plate 17 is in sliding contact with the inner wall of the stirring tank 1.

[0049] An installation cavity is provided inside the movable sleeve 7. Inside the installation cavity, a rectangular block 11 with upper and lower openings is installed. Oblique notches 12 are provided on both sides of the rectangular block 11. A sliding column 13 is slidably connected inside the oblique notch 12 of the rectangular block 11. A resisting straight rod 14 is fixedly connected to the outer wall of the sliding column 13. A clamping block 15 is fixedly connected to one side of the rectangular block 11 close to the threaded sleeve 6. A chute opening communicating with the installation cavity is provided on the inner wall of the movable sleeve 7. The clamping block 15 is slidably connected to the chute opening on the movable sleeve 7. Moreover, a number of card slots cooperating with the clamping block 15 are provided on the outer wall of the threaded sleeve 6. The number of card slots is distributed on the outer wall of the threaded sleeve 6 in a circumferential array manner.

[0050] The initial state of the stirring device is as Figure 6 shown. During the processes of S1 and S2, the driving motor 18 can be started. The driving motor 18 drives the rotating rod 3 to rotate forward. At this time, since the resisting straight rod 14 is resisted by the bottom surface of the cross-shaped mounting plate 2, the position of the sliding column 13 inside the oblique notch 12 is as Figure 4 and Figure 5 shown. The position of the resisting straight rod 14 moves downward. Through the sliding column 13, the rectangular block 11 will move outward, further causing the clamping block 15 to disengage from the card slot on the outer wall of the threaded sleeve 6. The threaded sleeve 6 will then rotate synchronously with the rotating rod 3 to stir the materials in the stirring tank 1.

[0051] When transferring the materials to the pressure vessel, the driving motor 18 can be started. The driving motor 18 drives the rotating rod 3 to rotate in reverse. Under the action of the spring, the clamping block 15 is re-engaged with the card slot on the outer wall of the threaded sleeve 6 as Figure 7 shown. The threaded sleeve 6 will not rotate with the rotating rod 3. Further, the movable sleeve 7 and the circular plate 8 will move downward with the threaded sleeve 6. The circular plate 8 causes the rectangular scraping plate 5 to move outward through the connecting plate 9 to scrape the materials adsorbed on the outer wall of the stirring plate 4. At the same time, the circular plate 8 will also drive the annular scraping plate 17 to scrape the materials on the inner wall of the stirring tank 1.

[0052] A spring is fixedly connected between the rectangular block 11 and the inner wall of the installation cavity of the movable sleeve 7. The bottom end of the resisting straight rod 14 extends into the rectangular block 11, and the top end of the resisting straight rod 14 penetrates and extends to the outside of the movable sleeve 7. The resisting straight rod 14 can slide on the movable sleeve 7.

[0053] As Figure 5 shown, a T-shaped circular ring sliding sleeve is provided on the bottom surface of the movable sleeve 7. A T-shaped circular ring sliding rail slidably connected to the T-shaped circular ring sliding sleeve of the movable sleeve 7 is coaxially fixedly connected to the top surface of the circular plate 8. Moreover, a through hole is provided at the center of the circular plate 8. The rotating rod 3 passes through the through hole of the circular plate 8. The movable sleeve 7 and the circular plate 8 are rotationally connected through the T-shaped circular ring sliding sleeve and the T-shaped circular ring sliding rail.

[0054] A discharge port with a valve is provided on the bottom surface of the stirring tank 1. Four support legs are symmetrically installed on the bottom surface of the stirring tank 1.

[0055] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A method for preparing fertilizer from air purification materials, characterized in that: The following steps are involved: S1 Raw material preparation: Take fresh herbivorous animal feces and adjust the moisture content to 80% to 85%; S2: Adding additives: Adding feces into a stirring device, and adding 20% ​​of diatomaceous earth, 5% of nano calcium titanate and 10% of 30% hydrogen peroxide to the feces in the stirring device, and stirring evenly; S3 heating reaction: heat the mixture to a slightly boiling state, then add the mixed acid solution in a ratio of 1 kg:1 L, stir evenly again, and continue to maintain a slightly boiling state; S4 pressure treatment: the reactants are placed in a pressure vessel, leaving no less than 50% of the space in the vessel, and air is pumped into the space of the vessel to raise the pressure to 1MPa, and then the pressure is maintained for 60 minutes, and then the pressure is quickly released and evacuated to 100Pa, and the pressure is maintained for 60 minutes; S5 solid-liquid separation: after the above treatment, the obtained mixture is subjected to solid-liquid separation to obtain solid and liquid; Preparation of S6 purification material: drying the solid obtained in S5, adding concentrated phosphoric acid for carbonization, and drying to obtain the pollutant purification material; S7 Preparation of liquid compound fertilizer: Add ammonia water to the liquid obtained in S5 to adjust the pH value to 6-8 to obtain liquid compound fertilizer; The stirring device comprises a stirring tank (1), the top surface of the stirring tank (1) is fixedly connected to a cross mounting plate (2) by bolts, a rotating rod (3) is rotatably connected to the center of the bottom surface of the cross mounting plate (2), a stirring plate (4) is fixedly connected to the bottom of the rotating rod (3), two rectangular scrapers (5) are symmetrically slidably sleeved on the outer wall of the stirring plate (4), and a driving mechanism for driving the rectangular scrapers (5) is installed on the upper part of the outer wall of the rotating rod (3); The driving mechanism comprises a threaded sleeve (6), the outer wall of the rotating rod (3) is provided with a threaded portion, the threaded sleeve (6) is threadedly connected to the threaded portion of the rotating rod (3), the outer wall of the threaded sleeve (6) is coaxially rotatably connected to a movable sleeve (7), the bottom surface of the movable sleeve (7) is coaxially rotatably connected to a circular plate (8), the bottom surface of the circular plate (8) is symmetrically hinged to a connecting plate (9), and the bottom end of the connecting plate (9) is hinged to the top surface of the rectangular scraper (5); The movable sleeve (7) is provided with an installation cavity inside, and a rectangular block (11) with upper and lower openings is installed inside the installation cavity. Oblique grooves (12) are provided on both sides of the rectangular block (11). A sliding column (13) is slidably connected inside the inclined groove (12) of the rectangular block (11), and an abutting straight rod (14) is fixedly connected to the outer wall of the sliding column (13). A clamping block (15) is fixedly connected to the side of the rectangular block (11) close to the threaded sleeve (6). A sliding groove communicating with the installation cavity is provided on the inner wall of the movable sleeve (7), and the clamping block (15) is slidably connected to the sliding groove on the movable sleeve (7), and a plurality of clamping grooves matching with the clamping block (15) are provided on the outer wall of the threaded sleeve (6), and the plurality of clamping grooves are distributed on the outer wall of the threaded sleeve (6) in a circular array. The bottom surface of the circular plate (8) is also fixedly connected to two L-shaped connecting rods (16), and the bottom ends of the two L-shaped connecting rods (16) are fixedly connected to the same annular scraper (17), and the annular scraper (17) is in sliding contact with the inner wall of the stirring tank (1).

2. The method for preparing fertilizer from air purification materials according to claim 1, characterized in that: The bottom surface of the movable sleeve (7) is provided with a T-shaped circular ring sliding sleeve, the top surface of the circular plate (8) is coaxially fixedly connected with a T-shaped circular ring sliding rail slidably connected to the T-shaped circular ring sliding sleeve of the movable sleeve (7), and a through hole is provided at the center of the circular plate (8), and the rotating rod (3) passes through the through hole of the circular plate (8).

3. The method for preparing fertilizer from air purification materials according to claim 1, characterized in that: Two multi-stage limiting telescopic rods (10) are symmetrically fixedly mounted on the bottom surface of the cross mounting plate (2), and the L-shaped movable ends of the multi-stage limiting telescopic rods (10) are fixedly connected to the outer wall of the movable sleeve (7).

4. The method for preparing fertilizer from air purification materials according to claim 1, characterized in that: A driving motor (18) is fixedly mounted at the center of the top surface of the cross mounting plate (2), and the output shaft of the driving motor (18) is coaxially fixedly connected to the rotating rod (3).

5. The method for preparing fertilizer from air purification materials according to claim 1, characterized in that: A spring is fixedly connected between the rectangular block (11) and the inner wall of the mounting cavity of the movable sleeve (7); the bottom end of the abutting straight rod (14) extends to the inside of the rectangular block (11), and the top end of the abutting straight rod (14) extends through and to the outside of the movable sleeve (7).

6. The method for preparing fertilizer from air purification materials according to claim 1, characterized in that: The bottom surface of the stirring tank (1) is provided with a discharge port with a valve, and the bottom surface of the stirring tank (1) is also symmetrically provided with four supporting legs.

7. The method for preparing fertilizer from air purification materials according to claim 1, characterized in that: The mixed acid solution consists of 0.5-1 mol / L nitric acid and 0.2-0.5 mol / L phosphoric acid.

8. The method for preparing fertilizer from air purification materials according to claim 1, characterized in that: The herbivorous animal excrement in S1 is cow dung, horse dung or sheep dung.

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