Equipment and method for preparing biological bacterial fertilizer for improving sunflower soil

Abstract

The invention discloses a biological bacterial fertilizer preparation device and method for sunflower soil improvement, and belongs to the technical field of biological bacterial fertilizer preparation, the biological bacterial fertilizer preparation device comprises a frame base, the left end and the right end of the frame base are respectively and parallelly fixed with two vertically arranged fixing plates; the roller fermentation tank is horizontally and rotatably connected between the two fixed plates; the loading motor is fixed on one side of the frame base, and a gear ring is coaxially fixed outside the roller fermentation tank; the material box is fixed to the end face of one side of one fixing plate. The flexible bag is arranged in the roller fermentation tank; the kneading and stirring unit is rotationally mounted in the roller fermentation tank; the biological bacterial fertilizer is prepared from rotten or semi-rotten livestock and poultry manure, and the flexible bag mainly arranged in the roller fermentation tank has high flexibility, so that caking breaking and enhanced mixing in the fermentation process are facilitated, and the biological bacterial fertilizer is rubbed and extruded in cooperation with the kneading and stirring unit; the caking problem in the fermentation of the biological manure is fundamentally solved.

Description

Technical Field

[0001] This invention belongs to the field of bio-fertilizer preparation technology, specifically a bio-fertilizer preparation device and method for sunflower soil improvement. Background Technology

[0002] The core technological goal of bio-fertilizers used for sunflower soil improvement is to transform organic solid waste such as livestock and poultry manure into stable, harmless, and high-quality fertilizer rich in specific functional microorganisms (such as phosphorus-solubilizing, potassium-solubilizing, nitrogen-fixing, and biocontrol bacteria) through controlled aerobic fermentation. Traditional fermentation equipment, such as trough fermenters, uses track-type turners for periodic turning, stirring, and displacement, resulting in long fermentation cycles and large floor space requirements. Drum fermenters, on the other hand, rely on the rotation of the drum and internal structures (such as lifting plates) to lift the material to a certain height before dropping it, achieving material mixing and oxygen exchange. This mixing method is gentle, and the material mixes well in the radial (cross-sectional direction), making it suitable for materials with a certain degree of stickiness. However, the traditional lifting plate structure is not only ineffective in breaking up clumps in moist, fibrous manure mixtures, but it also easily causes the material to form increasingly larger, externally dry and hardened, internally anaerobic and putrefied spherical clumps. Furthermore, relying solely on free fall results in low shear force, making it impossible to effectively knead and pull the material, leading to severe material sticking to the walls and cumbersome subsequent cleaning. Summary of the Invention

[0003] To achieve the above objectives, the present invention provides the following technical solution: a bio-fertilizer preparation device for sunflower soil improvement, comprising: a frame base with two vertically arranged fixed plates fixed parallel to each other at its left and right ends; a drum fermentation tank horizontally rotatably connected between the two fixed plates; a loading motor fixed to one side of the frame base, a gear ring coaxially fixed to the outside of the drum fermentation tank, a reducer installed at the output end of the loading motor, the reducer performing gear meshing transmission on the gear ring; a material box fixed to one end face of one of the fixed plates, a feed pipe provided on the upper end face of the material box; a flexible bladder disposed in the drum fermentation tank; a kneading unit rotatably installed inside the drum fermentation tank; and a temperature-controlled loading unit coaxially rotatably installed outside the drum fermentation tank.

[0004] Preferably, two support roller frames are provided below the drum fermenter, each of which is horizontally fixed in the frame base. Rollers are rotatably connected to the support roller frames, and a hoop is fixed outside the drum fermenter. The rollers and the hoop make rolling contact. The flexible capsule is configured as a three-layer capsule structure, consisting of a contact layer, a reinforcing layer, and an elastic layer from the inside out.

[0005] Preferably, an end cap is fixed on the side of the fixed plate away from the material box, and the drum fermenter is sealed and rotated with the end cap. The end cap has a feed inlet and a discharge outlet symmetrically opened at the top and bottom. An upper guide plate is fixed at an incline inside the material box, and a discharge plate is fixed inside the material box at the feed pipe. A discharge outlet is opened on the lower end face of the material box.

[0006] Preferably, the kneading unit includes: a stirring shaft rotatably connected inside the drum fermenter, with both ends of the stirring shaft rotatably connected to a fixed plate; a spiral blade fixed to one end of the stirring shaft away from the material box; a stirring blade fixed to the other end of the stirring shaft; a control motor fixed to another of the fixed plates, the output end of the control motor being connected to the stirring shaft for transmission via a gear transmission box; and a gentle pressing device coaxially mounted on the stirring shaft and located outside the flexible bladder, the gentle pressing device abutting against the outer wall of the flexible bladder.

[0007] Preferably, the spiral blades extrude and convey the bio-fertilizer towards the direction of the soft pressure device as the stirring shaft rotates; multiple inclined outer guide rollers are also distributed on the stirring shaft at the spiral blades.

[0008] Preferably, the gentle pressure device includes: an outer gear ring, the center of which is fixed inside the drum fermenter; a sun gear, coaxially fixed on the stirring shaft; multiple planetary gears evenly distributed around the circumference, each planetary gear meshing internally with the outer gear ring and externally with the sun gear; a positioning frame mounted on the stirring shaft, with multiple shafts rotatably connected to the positioning frame, and each planetary gear fixed to each shaft; and a gentle pressure ball, corresponding to each planetary gear, with a connecting column fixed on the gentle pressure ball, the other end of which is fixed to the shaft.

[0009] Preferably, each of the connecting posts and the shaft posts are arranged on a non-coaxial axis.

[0010] Preferably, the temperature control loading unit includes: an outer sealing ring, which is rotatably and sealingly fitted on the outer wall of the drum fermenter, and two annular cavities are distributed at intervals inside the outer sealing ring; a cavity extending and fixed tangentially along the outer sealing ring, and an inlet pipe and an outlet pipe are respectively connected to the outside of the cavity; and a dividing hole, which is circumferentially opened on the outer wall of the drum fermenter, and the dividing hole is set into two sets and connected to the two annular cavities respectively.

[0011] Preferably, a spacer ring is coaxially fixed inside the drum fermenter, and the spacer ring is sleeved on the flexible bladder, so that the flexible bladder and the inner wall of the drum fermenter form a sealed space; multiple axially arranged positioning rods are distributed on the outer circumference of the flexible bladder, and each positioning rod is fixed to the drum fermenter.

[0012] A method for preparing bio-fertilizer for sunflower soil improvement includes the following steps:

[0013] Step 1: Select well-rotted or semi-rotted livestock and poultry manure and add appropriate auxiliary materials. Grind the manure thoroughly using a crusher, and sprinkle water into the mixture to increase its moisture content to 60%.

[0014] Step 2: The mixed materials enter the flexible bladder of the drum fermenter through the feed pipe of the material box, filling the flexible bladder to three-quarters of its total capacity. Then, the bacterial agent is mixed with warm water and allowed to stand for activation. The drum fermenter rotates at low speed so that the activated bacterial solution can be sprayed onto the mixed materials through the feed pipe.

[0015] Step 3: The liquid inlet pipe in the temperature control loading unit continuously feeds high-temperature water into the outer sealed ring cavity. The high-temperature water fully flows and wraps the flexible bag, causing the internal temperature water to rise rapidly to 55°C to 65°C. The drum fermenter is driven to rotate at a uniform speed by the loading motor, while the kneading unit squeezes and kneads the mixture during rotation to ensure thorough mixing.

[0016] Step 4: Repeat step 3 and increase the internal temperature. The mixture enters the high-temperature fermentation period. The drum fermenter can be ventilated internally through the feed pipe to provide oxygen and exhaust waste gas.

[0017] Step 5: After fermentation, the mixture is discharged from the discharge port and then transferred to the post-fermentation workshop for storage until it is fully decomposed.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] This invention uses fully decomposed or semi-decomposed livestock and poultry manure to prepare bio-fertilizer, which is then fermented in a drum fermenter. The flexible bladder inside the drum fermenter is highly flexible, facilitating the breaking up of clumps and enhancing mixing during fermentation. This allows it to work in conjunction with a kneading unit to knead and compress the bio-fertilizer. Compared to traditional drum fermenters, this invention provides sufficient gentle pressure to the bio-fertilizer within the flexible bladder using the kneading unit's gentle pressure device. This applies continuous, enveloping stress from the outside of the clumps, loosening the clump structure, completely breaking up the clumps, and releasing the trapped anaerobic gases. Furthermore, the stirring blades on the stirring shaft provide a rigid dispersing effect. Through this combination of rigid and flexible physical action, the problem of clumping during bio-manure fermentation is fundamentally solved. The invention also includes a temperature control loading unit that delivers high-temperature water between the flexible bladder and the drum fermenter, ensuring high temperature control accuracy and preventing uneven fermentation of the bio-fertilizer within the flexible bladder. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0022] Figure 3 This is a schematic diagram of the kneading unit in this invention;

[0023] Figure 4 This is a schematic diagram of the flexible pressure device in this invention;

[0024] Figure 5 This is a schematic diagram of the temperature-controlled loading unit in this invention;

[0025] Figure 6 This is a schematic diagram of the flexible capsule structure in this invention;

[0026] In the diagram: 1. Frame base; 11. Fixing plate; 12. Loading motor; 13. Support roller frame; 14. Hoop ring; 2. Drum fermentation tank; 21. Gear ring; 22. Flexible bladder; 23. End cap; 24. Feed inlet; 3. Material box; 31. Feed pipe; 32. Upper guide plate; 33. Discharge plate; 34. Discharge port; 4. Kneading unit; 41. Stirring shaft; 42. Spiral blade; 43. Stirring blade; 44. Control motor; 45. Outer guide roller; 5. Temperature-controlled loading unit; 51. Outer sealing ring; 52. Liquid inlet pipe; 53. Liquid outlet pipe; 54. Dividing hole; 55. Ring cavity; 56. Spacer ring; 57. Positioning rod; 6. Soft pressure device; 61. Outer gear ring; 62. Sun gear; 63. Planetary gear; 64. Positioning frame; 65. Soft pressure ball; 66. Connecting column. Detailed Implementation

[0027] Please see Figures 1-6 In this embodiment of the invention, a bio-fertilizer preparation device for sunflower soil improvement includes: a frame base 1, with two vertically arranged fixing plates 11 fixed parallel to each other at its left and right ends; a drum fermentation tank 2, horizontally rotatably connected between the two fixing plates 11; a loading motor 12, fixed to one side of the frame base 1, with a gear ring 21 coaxially fixed to the outside of the drum fermentation tank 2, and a reducer installed at the output end of the loading motor 12, the reducer driving the gear ring 21 through gear meshing; a material box 3, fixed to one end face of one of the fixing plates 11, with a feed pipe 31 provided on the upper end face of the material box 3 for convenient conveying of organic fertilizer; and a flexible... The flexible bladder 22 is installed inside the drum fermenter 2; the kneading unit 4 is rotatably installed inside the drum fermenter 2; and the temperature control loading unit 5 is coaxially rotatably installed outside the drum fermenter 2. The capacity of the flexible bladder 22 is approximately the same as or slightly smaller than the volume of the drum fermenter 2. The bio-fertilizer can be fully fermented in the flexible bladder 22. The outer surface of the flexible bladder 22 is smooth, while its inner wall is designed with a non-smooth texture to distribute capillary needles. In addition, a flexible mesh or skeleton structure (such as nylon, spring steel, or flexible plastic) can be embedded in the inner wall of the flexible bladder 22 to prevent the flexible bladder 22 from being excessively deformed or collapsed after long-term use.

[0028] In this embodiment, two support roller frames 13 are provided below the drum fermenter 2. Each support roller frame 13 is horizontally fixed inside the frame base 1. Rollers are rotatably connected to the support roller frame 13. A hoop 14 is fixed outside the drum fermenter 2. The rollers and the hoop 14 are in rolling contact. The flexible capsule 22 is configured as a three-layer capsule structure, consisting of a contact layer, a reinforcing layer, and an elastic layer from the inside out. The reinforcing layer is a wear-resistant and corrosion-resistant elastomer (such as polyurethane), and the contact layer is a highly thermally conductive material (such as embedded thermally conductive silicone or metal mesh) or reinforcing fiber.

[0029] In a preferred embodiment, an end cap 23 is fixed on the side of the fixed plate 11 away from the material box 3. The drum fermentation tank 2 is sealed and rotated with the end cap 23. The end cap 23 has a feed inlet 24 and a discharge outlet symmetrically opened at the top and bottom. An upper guide plate 32 is fixedly inclined inside the material box 3, and a discharge plate 33 is fixed inside the material box 3 at the feed pipe 31. A discharge port 34 is opened on the lower end face of the material box 3 for convenient and quick discharge.

[0030] In this embodiment, the kneading unit 4 includes: a stirring shaft 41, which is rotatably connected inside the drum fermentation tank 2, with both ends of the stirring shaft 41 rotatably connected to the fixed plate 11, and the rotation direction of the stirring shaft 41 being opposite to the rotation direction of the drum fermentation tank 2; a spiral blade 42, fixed on the stirring shaft 41 at one end away from the material box 3, which can guide and transport the bio-fertilizer to one side as the spiral blade 42 rotates with the stirring shaft 41; a stirring blade 43, fixed on the other end of the stirring shaft 41, which has a strong rigid stirring and dispersing effect; a control motor 44, fixed on another of the fixed plates 11, with the output end of the control motor 44 connected to the stirring shaft 41 for transmission through a gear transmission box; and a soft pressure device 6, coaxially mounted on the stirring shaft 41 and located outside the flexible bladder 22, with the soft pressure device 6 abutting against the outer wall of the flexible bladder 22.

[0031] In this embodiment, the spiral blade 42, along with the rotation of the stirring shaft 41, squeezes and conveys the bio-fertilizer toward the direction of the flexible pressure device 6; the stirring shaft 41 also has a plurality of inclined outer guide rollers 45 distributed at the spiral blade 42. The main function of the outer guide rollers 45 is to disperse and guide the bio-fertilizer around the spiral blade 42, so as to avoid excessive compression of the bio-fertilizer at the end of the flexible bladder 22.

[0032] In this embodiment, the gentle pressure device 6 includes: an external gear ring 61, whose center is fixed inside the drum fermenter 2; a sun gear 62, coaxially fixed on the stirring shaft 41; multiple planetary gears 63 evenly distributed around the circumference, each planetary gear 63 meshing internally with the external gear ring 61 and externally with the sun gear 62; a positioning frame 64 mounted on the stirring shaft 41, with multiple shafts rotatably connected to the positioning frame 64, and each planetary gear 63 fixed to one of the shafts; and a gentle pressure ball 65 corresponding to each planetary gear 63, with a connecting column 66 fixed on the gentle pressure ball 65, the other end of which is fixed to the shaft. Specifically, when the sun wheel 62 rotates synchronously with the stirring shaft 41, each planetary wheel 63 can rotate on its own axis while revolving around the sun wheel 62. At this time, the soft pressure ball 65 can fully contact the flexible bladder 22, and the spiral blade 42 delivers the bio-fertilizer to the soft pressure ball 65, achieving full soft pressure on the bio-fertilizer. This biomimetic kneading can more effectively "comb" apart tough fiber clumps instead of hard crushing them, resulting in a more thorough clump breaking effect. At the same time, it causes minimal damage to the mycelium of microorganisms (especially filamentous fungi such as actinomycetes), which is conducive to the construction and maintenance of complex beneficial microbial communities and is crucial for the production of highly active bio-fertilizers.

[0033] In a preferred embodiment, each of the connecting posts 66 is arranged on a non-coaxial axis with the shaft post to enhance the soft pressure effect.

[0034] In this embodiment, the temperature control loading unit 5 includes: an outer sealing ring 51, which is rotatably and sealed on the outer wall of the drum fermenter 2, and two annular cavities 55 are distributed at intervals inside the outer sealing ring 51; a cavity, which extends and is fixed along the tangential direction of the outer sealing ring 51, and an inlet pipe 52 and an outlet pipe 53 are respectively connected to the outside of the cavity; and a dividing hole 54, which is circumferentially opened on the outer wall of the drum fermenter 2, and the dividing hole 54 is set in two sets and connected to the two annular cavities 55 respectively, so that the high temperature water transported in the inlet pipe 52 can enter the annular gap between the drum fermenter 2 and the flexible bladder 22 through the annular cavity 55, thereby realizing external heating of the flexible bladder 22.

[0035] In this embodiment, a spacer ring 56 is coaxially fixed inside the drum fermenter 2. The spacer ring 56 is sandwiched on the flexible bladder 22, so that the flexible bladder 22 and the inner wall of the drum fermenter 2 form a sealed space. When high-temperature water enters this sealed space, it forms a tightly fitting and movable "heating jacket". The heat can be instantly conducted to the agglomerated surface in contact with the flexible bladder 22, which greatly shortens the heat conduction path, completely breaks the insulation layer caused by the agglomeration, and improves heating efficiency and uniformity. Compared with traditional drum fermenters, this device has a strong temperature regulation response capability. When heating is required, the heat can reach the working interface in "seconds". When overheating needs to be prevented, reducing the flow of the heating medium or switching the cooling medium can also quickly cool down, improving the response speed and accuracy of temperature control.

[0036] The flexible bladder 22 has multiple axially arranged positioning rods 57 distributed around its outer circumference. Each positioning rod 57 is fixed to the drum fermenter 2 so that the flexible bladder 22 can be supported inside the drum fermenter 2 to prevent structural collapse.

[0037] A method for preparing bio-fertilizer for sunflower soil improvement includes the following steps:

[0038] Step 1: Select well-rotted or semi-rotted livestock and poultry manure (such as cow manure and sheep manure). Cow manure is the first choice because of its high fiber content, which is beneficial for improving the soil compaction that is common in sunflower fields. Add appropriate auxiliary materials (straw powder, rice husks, mushroom residue, etc.) and crush it thoroughly with a crusher. Sprinkle water into the mixture to adjust its water content to 60% (it should be able to be formed into a ball when squeezed in your hand, with water between your fingers but not dripping).

[0039] Step 2: The mixed materials enter the flexible bladder 22 of the drum fermenter 2 through the feed pipe 31 of the material box 3, and fill the flexible bladder 22 to three-quarters of its total capacity. Then, the bacterial agent is mixed with warm water and allowed to stand for activation. The drum fermenter 2 rotates at low speed so that the activated bacterial liquid can be sprayed onto the mixed materials through the feed pipe 31.

[0040] Step 3: The liquid inlet pipe 52 in the temperature control loading unit 5 continuously feeds high-temperature water into the annular cavity 55 of the outer sealing ring 51. The high-temperature water fully flows and wraps the flexible bladder 22, causing the internal temperature water to rise rapidly to 55°C to 65°C. The drum fermenter 2 is controlled and driven to rotate at a uniform speed by the loading motor 12, while the kneading unit 4 squeezes and kneads the mixture during rotation to ensure that it is fully mixed.

[0041] Step 4: Repeat Step 3, using a temperature sensor to monitor the tank temperature in real time, dynamically adjusting the hot water temperature and flow rate of the inlet pipe 52 to stably control the core temperature during the high-temperature period at 55℃-65℃ for 3-7 days. This stage effectively kills pathogens and weed seeds, achieves rapid degradation of organic matter, and increases the internal temperature. As the mixed materials enter the high-temperature fermentation period, the drum fermenter 2 can be ventilated internally through the feed pipe 31 to provide oxygen, exhaust waste gas, and maintain a microaerobic environment inside the tank.

[0042] Step 5: After fermentation, the mixture is discharged from the discharge port and then transferred to the post-fermentation workshop for piling until it is fully decomposed. The post-fermentation stage lasts for 15-30 days, during which the pile is turned over every 3-5 days.

[0043] The above description is merely 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 bio-bacterial fertilizer preparation apparatus for sunflower soil improvement, characterized in that, It includes: The frame base (1) has two vertically arranged fixing plates (11) fixed parallel to each other at its left and right ends. The drum fermenter (2) is horizontally rotatably connected between two fixed plates (11); The loading motor (12) is fixed on one side of the frame base (1). A gear ring (21) is coaxially fixed on the outside of the drum fermentation tank (2). A reducer is installed at the output end of the loading motor (12). The reducer is used for gear meshing transmission with the gear ring (21). The material box (3) is fixed on one side end face of one of the fixing plates (11), and the upper end face of the material box (3) is provided with a feed pipe (31). Flexible capsules (22) are placed in a drum fermenter (2); The kneading unit (4) is rotatably installed inside the drum fermenter (2); The temperature control loading unit (5) is coaxially mounted outside the drum fermenter (2); The kneading unit (4) includes: A stirring shaft (41) is rotatably connected inside a drum fermenter (2), and both ends of the stirring shaft (41) are rotatably connected to a fixed plate (11); Spiral blade (42) is fixed on the end of the stirring shaft (41) away from the feed box (3); The stirring blade (43) is fixed to the other end of the stirring shaft (41); The soft pressure device (6) is coaxially mounted on the stirring shaft (41) and located outside the flexible bladder (22). The soft pressure device (6) is in contact with the outer wall of the flexible bladder (22). The stirring shaft (41) also has multiple inclined outer guide rollers (45) distributed at the spiral blade (42).

2. The biological bacterial fertilizer preparation equipment for sunflower soil improvement according to claim 1, characterized in that: Two support roller frames (13) are provided below the drum fermenter (2). Each support roller frame (13) is horizontally fixed inside the frame base (1). Rollers are rotatably connected to the support roller frame (13). A hoop (14) is fixed outside the drum fermenter (2). The rollers and the hoop (14) are in rolling contact. The flexible capsule (22) is configured as a three-layer capsule structure, consisting of a contact layer, a reinforcing layer, and an elastic layer from the inside out.

3. The device for preparing bio-bacterial fertilizer for sunflower soil improvement according to claim 1, characterized in that: An end cap (23) is fixed on the side of the fixed plate (11) away from the material box (3). The drum fermentation tank (2) and the end cap (23) are sealed and rotated together. The end cap (23) has a feed inlet (24) and a discharge outlet symmetrically opened at the top and bottom. The material box (3) is fixed with an upper guide plate (32) at an upward angle inside, and a discharge plate (33) is fixed inside the material box (3) at the feed pipe (31). The lower end face of the material box (3) is provided with a discharge port (34).

4. The bio-fertilizer preparation equipment for sunflower soil improvement according to claim 1, characterized in that, The kneading unit (4) also includes: The control motor (44) is fixed on another fixed plate (11), and the output end of the control motor (44) is connected to the stirring shaft (41) through a gear transmission box.

5. The bio-fertilizer preparation equipment for sunflower soil improvement according to claim 4, characterized in that: The spiral blade (42) rotates with the stirring shaft (41) to squeeze and transport the bio-fertilizer towards the direction of the soft pressure device (6).

6. The bio-fertilizer preparation equipment for sunflower soil improvement according to claim 4, characterized in that, The soft pressure device (6) includes: The outer toothed ring (61) is fixed at its center inside the drum fermenter (2); The sun gear (62) is coaxially fixed on the agitator (41); The planetary gears (63) are multiple planets evenly distributed around the circumference. Each planetary gear (63) meshes internally with the external gear ring (61) and externally with the sun gear (62). A positioning frame (64) is mounted on the stirring shaft (41). Multiple shafts are rotatably connected to the positioning frame (64), and the planetary gear (63) is fixed to each shaft. A soft pressure ball (65) is provided corresponding to each planetary gear (63). A connecting column (66) is fixed on the soft pressure ball (65), and the other end of the connecting column (66) is fixed to the shaft column.

7. The bio-fertilizer preparation equipment for sunflower soil improvement according to claim 6, characterized in that: Each of the connecting columns (66) is arranged on a non-coaxial axis with the shaft column.

8. The bio-fertilizer preparation equipment for sunflower soil improvement according to claim 1, characterized in that, The temperature-controlled loading unit (5) includes: An outer sealing ring (51) is rotatably fitted on the outer wall of the drum fermenter (2), and two annular cavities (55) are distributed at intervals inside the outer sealing ring (51). The cavity extends and is fixed along the tangential direction of the outer sealing ring (51), and the cavity is respectively connected to an inlet pipe (52) and a drain pipe (53). Dividing holes (54) are circumferentially opened on the outer wall of the drum fermenter (2). The dividing holes (54) are set in two sets and connected to the two annular cavities (55).

9. The bio-fertilizer preparation equipment for sunflower soil improvement according to claim 8, characterized in that: A spacer ring (56) is coaxially fixed inside the drum fermenter (2). The spacer ring (56) is sandwiched on the flexible bladder (22), so that the flexible bladder (22) and the inner wall of the drum fermenter (2) form a sealed space. Multiple axially arranged positioning rods (57) are distributed on the outer circumference of the flexible bladder (22), and each positioning rod (57) is fixed to the drum fermenter (2).

10. A method for preparing bio-fertilizer for sunflower soil improvement, comprising using the bio-fertilizer preparation equipment for sunflower soil improvement as described in claim 9, characterized in that, It includes the following steps: Step 1: Select well-rotted or semi-rotted livestock and poultry manure and add appropriate auxiliary materials. Grind the manure thoroughly using a crusher, and sprinkle water into the mixture to increase its moisture content to 60%. Step 2: The mixture enters the flexible bladder (22) of the drum fermenter (2) through the feed pipe (31) of the material box (3) and fills three-quarters of the total capacity of the flexible bladder (22). Then, the bacterial agent is mixed with warm water and allowed to stand for activation. The drum fermenter (2) rotates at low speed so that the activated bacterial liquid can be sprayed onto the mixture through the feed pipe (31). Step 3: The liquid inlet pipe (52) in the temperature control loading unit (5) continuously feeds high-temperature water into the annular cavity (55) of the outer sealing ring (51). The high-temperature water fully flows and wraps the flexible bag (22), causing the internal temperature water to rise rapidly to 55°C to 65°C. The drum fermenter (2) is driven to rotate at a uniform speed by the loading motor (12), while the kneading unit (4) squeezes and kneads the mixture during rotation to make it fully mixed. Step 4: Repeat step 3 and increase the internal temperature. The mixture enters the high-temperature fermentation period. The drum fermenter (2) can be ventilated internally through the feed pipe (31) to provide oxygen to the inside and exhaust waste gas. Step 5: After fermentation, the mixture is discharged from the discharge port and then transferred to the post-fermentation workshop for storage until it is fully decomposed.

Images