A turner for bio-fertilizer preparation

Abstract

The utility model relates to a kind of for biological fertilizer preparation's heap turner. Including in guide rail and walking mounting frame, walking driving device is installed on walking mounting frame;Two material turning mounting arms one and two material turning mounting arms two are provided on walking mounting frame;Rotary connection has material turning assembly between two material turning mounting arms one, rotary connection has broken air supplementing assembly between two material turning mounting arms two, rotary joint is connected in the end of broken air supplementing assembly;It further includes rotary drive component one and rotary drive component two;Broken air supplementing assembly includes hollow rotating shaft, is opened with several air holes on it, several broken cutter mechanisms and several air supplementing material turning mechanisms are installed on hollow rotating shaft, the inner cavity of each air supplementing material turning mechanism is connected with air hole and is opened with gas outlet. The utility model can be stirred to biological fertilizer while carrying out agglomerated material dispersion, and in the process of heap turning, so that fertilizer can be effectively oxygenated simultaneously, ensure the full fermentation of organic fertilizer.

Description

Technical Field

[0001] This utility model belongs to the field of bio-organic fertilizer production technology, and in particular relates to a compost turner for bio-fertilizer preparation. Background Technology

[0002] Bio-organic fertilizer is an organic fertilizer made from organic solid waste (including organic garbage, straw, human, animal and poultry manure, oilseed cake, agricultural by-products and solid waste generated from food processing) through microbial fermentation, deodorization and complete decomposition.

[0003] In organic fertilizer production, fermentation is a crucial process. During the aerobic fermentation of fertilizer, microorganisms produce organic acids and enzymes. These compounds effectively improve soil structure and nutrient content. However, because the raw materials are piled together, a large amount of heat is generated during fermentation. If the internal temperature distribution of the fertilizer is uneven, some areas will become too hot, affecting the growth and metabolism of microorganisms and causing the fertilizer to clump. Furthermore, the different oxygen concentrations at the bottom and top of the fertilizer pile also affect the fermentation effect. Therefore, during the fermentation process of bio-organic fertilizer, a turning machine is generally needed to turn the compost pile every few days.

[0004] Existing traditional compost turners have a relatively simple structure, typically using a dual-shaft motor to drive a circular roller, which in turn turns the compost using rakes on the outer side of the roller. However, because the fertilizer is relatively moist and hot inside, it is prone to clumping. During the turning process, the existing compost turners can only agitate the fertilizer over a large area, but cannot break up the clumps, thus affecting the fermentation effect and making them inconvenient to use. In addition, in actual production applications, organic fertilizer fermentation is divided into early and late stages. In the early stage, sufficient oxygenation is required to prevent incomplete fermentation and the production of odorous gases such as H2S. In the late stage, sufficient ventilation is required to reduce the moisture content of the compost. The existing compost turners do not have the function of providing ventilation and oxygenation; they can only agitate the material. Therefore, there is an urgent need to design a compost turner for bio-fertilizer preparation to solve the above problems. Summary of the Invention

[0005] This invention provides a well-designed compost turner for bio-fertilizer preparation to address technical problems existing in prior art. This invention can simultaneously turn and break up clumps of bio-fertilizer, and during the turning process, the fertilizer receives effective oxygen replenishment, ensuring the full fermentation of the organic fertilizer.

[0006] The technical solution adopted by this utility model to solve the technical problems existing in the prior art is as follows: A turning machine for bio-fertilizer preparation includes a guide rail fixed to the top of the side wall of a fermentation tank, and a traveling mounting frame spanning the fermentation tank. A traveling drive device is installed on the traveling mounting frame, which rolls in contact with the guide rail and can drive the traveling mounting frame to move along its length. Two turning mounting arms (first type) and two turning mounting arms (second type) are arranged opposite each other on the traveling mounting frame, extending into the fermentation tank. A turning assembly is rotatably connected between the two turning mounting arms (first type), and a crushing and aeration assembly is rotatably connected between the two turning mounting arms (second type). The end is connected to a rotary joint and connected to an air source through the rotary joint; it also includes a rotary drive assembly one mounted on a traveling mounting frame for driving the material turning assembly to rotate; it also includes a rotary drive assembly two mounted on a traveling mounting frame for driving the crushing and air-supplementing assembly to rotate; the crushing and air-supplementing assembly includes a hollow rotating shaft that is rotatably connected between two material turning mounting arms two and is hollow in shape, with several air holes opened on the outer wall of the hollow rotating shaft, and several crushing knife mechanisms and several air-supplementing and material turning mechanisms installed at intervals on the hollow rotating shaft, the inner cavity of each air-supplementing and material turning mechanism is connected to at least two air holes, and each air-supplementing and material turning mechanism is provided with an air outlet.

[0007] The advantages and positive effects of this utility model are as follows: This utility model provides a compost turner for bio-fertilizer preparation. By setting a guide rail and a walking drive device, the turner can be driven to reciprocate and cover the fermentation tank, ensuring comprehensive processing. Through the setting of a turning installation arm one, a turning component, and a rotary drive component one, basic turning operations can be performed on the compost, turning the surface material to the deeper layers. Through the setting of a turning installation arm two, a crushing and aeration component, and a rotary drive component two, the physical processes of mechanical crushing and gas supply can be integrated. The hollow rotating shaft serves as a gas delivery channel, and through the design of the ventilation holes connecting with the aeration and turning mechanism, gas can be continuously injected into the material during rotation. The spaced arrangement of the crushing blade mechanism and the aeration and turning mechanism allows for uniform gas diffusion while the material is crushed and agglomerated. Furthermore, the independent control of the rotary drive component one and the rotary drive component two enables the adjustability of the turning intensity and the crushing and aeration intensity. The air-injection and material-turning mechanism, through its design connecting the inner cavity with the air vents, forms a directional gas injection during rotation, enhancing the gas penetration effect in the material.

[0008] Preferably: a lifting guide frame is installed on the traveling mounting frame, and a lifting mounting seat that rolls in contact with the lifting guide frame is provided in the hollow area in the middle of the traveling mounting frame. It also includes a lifting drive device for driving the lifting mounting seat to move up and down along the lifting guide frame; two oppositely arranged tilting mounting arms one and two oppositely arranged tilting mounting arms two are fixedly installed on the lifting mounting seat, and rotary drive assembly one and rotary drive assembly two are both installed on the lifting mounting seat; the lifting drive device includes a plurality of longitudinally arranged lifting drive cylinders installed on the traveling mounting frame, and the extended end of each lifting drive cylinder is connected to the lifting mounting seat, and also includes a plurality of lifting guide assemblies that roll in contact with the lifting guide frame installed on the lifting mounting seat.

[0009] Preferably, the material turning assembly includes a material turning shaft that is rotatably connected between two material turning mounting arms and is arranged laterally. Several material turning connecting rods 2 are evenly distributed along the axial direction of the material turning shaft. The several material turning connecting rods 2 are evenly distributed in the circumferential direction of the material turning shaft. An inclined material turning plate is fixed to the outer end of each material turning connecting rod 2. Several material turning connecting rods 1 are installed at both ends of the material turning shaft. An inclined material turning plate is fixed to the outer end of each material turning connecting rod 1.

[0010] Preferably, the air-filling and material-turning mechanism includes two sets of agitator shell units arranged centrally symmetrically on a hollow rotating shaft; the agitator shell unit includes inclined blades fixed to the hollow rotating shaft, straight blades fixed to the inclined blades, the straight blades and the inclined blades forming an air-filling chamber connected to one or more air vents on the hollow rotating shaft, a baffle plate fixed to the air-filling chamber, and a flow channel for gas to pass through between the baffle plate and the inner wall of the air-filling chamber; an air outlet connected to the air-filling chamber is provided between the ends of the straight blades and the inclined blades.

[0011] Preferably, the crushing blade mechanism includes a mounting blade disc fixed to a hollow rotating shaft, and a plurality of L-shaped blades I and a plurality of L-shaped blades II arranged symmetrically are detachably connected to the mounting blade disc, wherein the bending directions of the L-shaped blades I and L-shaped blades II are opposite.

[0012] Preferably: Rotary drive assembly one includes a material turning motor one, and a sprocket drive pair one is installed between the output shaft of the material turning motor one and the end of the material turning assembly; Rotary drive assembly two includes a material turning motor two, and a sprocket drive pair two is installed between the output shaft of the material turning motor two and the end of the crushing and air replenishment assembly.

[0013] Preferably, the walking drive device includes two wheel axles rotatably connected and arranged in parallel on the walking mounting frame, with walking wheels installed at both ends of each wheel axle and rolling contact with the corresponding guide rails. It also includes a walking motor mounted on the walking mounting frame, a walking drive sprocket keyed to the output shaft of the walking motor, a walking driven sprocket corresponding to the walking drive sprocket keyed to one of the two wheel axles, and a chain drivingly connecting the walking drive sprocket and the walking driven sprocket. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the main structure of this utility model; Figure 2 This is a side view of the main body of this utility model. Figure 3 This is a three-dimensional structural diagram of the material turning component in this utility model; Figure 4 This is a schematic diagram of the main cross-sectional structure of the crushing and air-injection component in this utility model; Figure 5 This is a three-dimensional structural diagram of the air replenishment and material turning mechanism in this utility model; Figure 6 This is a three-dimensional structural diagram of the crushing blade mechanism in this utility model.

[0015] In the diagram: 1. Guide rail; 2. Traveling wheel; 3. Traveling mounting frame; 4. Lifting guide assembly; 4-1. Lifting guide wheel; 4-2. Guide wheel seat; 5. Lifting drive cylinder; 6. Lifting guide frame; 7. Sprocket drive pair one; 8. Tilting motor one; 9. Traveling motor; 10. Traveling drive sprocket; 11. Tilting motor two; 12. Sprocket drive pair two; 13. Lifting mounting seat; 14. Axle; 15. Traveling driven sprocket; 16. Tilting mounting arm one; 17. Tilting assembly; 17-1. Tilting connecting rod one; 17-2. Tilting plate; 17-3 17-4 Connecting rod mounting component; 17-5 Tilting connecting rod II; 17-6 Tilting rotating shaft; 18 Crushing and air-injection assembly; 18-1 Crushing blade mechanism; 18-1-1 L-shaped blade I; 18-1-2 L-shaped blade II; 18-1-3 Mounting cutter disc; 18-2 Air-injection and turning mechanism; 18-2-1 Straight blade; 18-2-2 Inclined blade; 18-2-3 Air filling chamber; 18-2-4 Baffle plate; 18-3 Hollow rotating shaft; 18-4 Vent hole; 19 Rotary joint; 20 Fermentation tank; 21 Tilting mounting arm II. Detailed Implementation

[0016] To further understand the invention content, features, and effects of this utility model, the following embodiments are provided in detail: Please see Figure 1 and Figure 2The compost turner for bio-fertilizer preparation of this utility model includes a guide rail 1 fixed to the top of the side wall of a fermentation tank 20, and a walking mounting frame 3 spanning the fermentation tank 20. A walking drive device is installed on the walking mounting frame 3, which rolls in contact with the guide rail 1 and can drive the walking mounting frame 3 to move along its length. Two turning mounting arms 16 and two turning mounting arms 21 are arranged opposite each other and extending into the fermentation tank 20 on the walking mounting frame 3. A turning assembly 17 is rotatably connected between the two turning mounting arms 16, and a crushing and aeration assembly 18 is rotatably connected between the two turning mounting arms 21. A rotary joint 19 is connected to the end of the crushing and aeration assembly 18 and connected to an air source through the rotary joint 19. This embodiment also includes a rotary drive assembly 1 installed on the walking mounting frame 3 for driving the turning assembly 17 to rotate, and a rotary drive assembly 2 installed on the walking mounting frame 3 for driving the crushing and aeration assembly 18 to rotate.

[0017] Among them, the guide rail 1 refers to the load-bearing rail set along the length of the fermentation tank 20. It can be made of I-beams or H-beams and the surface is coated with a wear-resistant coating to extend its service life. Its function is to provide a stable moving path for the walking mounting frame 3.

[0018] like Figure 1 and Figure 2 As shown, the aforementioned walking drive device includes two wheel axles 14 rotatably connected and arranged in parallel on the walking mounting frame 3. Each wheel axle 14 has a walking wheel 2 installed at both ends that rolls in contact with the corresponding guide rail 1. The device also includes a walking motor 9 installed on the walking mounting frame 3. A walking drive sprocket 10 is keyed to the output shaft of the walking motor 9. One of the two wheel axles 14 is keyed to a walking driven sprocket 15 corresponding to the walking drive sprocket 10. A chain is driven between the walking drive sprocket 10 and the walking driven sprocket 15.

[0019] The dual-axle 14 structure enables the walking mounting frame 3 to achieve four-point support on the guide rail 1. The parallel arrangement of the two axles 14 improves the lateral stability of the equipment during movement and prevents equipment deviation caused by uneven force during turning operations. The rolling contact design between the walking wheels 2 and the guide rail 1 reduces frictional resistance, making the equipment move more smoothly. The walking motor 9 drives a specific axle 14 through a keyed walking drive sprocket 10, and transmits power to the walking driven sprocket 15 using a chain drive. This single-sided drive mode simplifies the transmission structure. At the same time, by selecting a single axle 14 to install the driven sprocket, it ensures effective transmission of driving force and avoids the structural complexity problems caused by dual-axle synchronous drive.

[0020] See further Figure 3The aforementioned material-turning assembly 17 includes a turning shaft 17-5 rotatably connected between two turning mounting arms 16 and arranged laterally. Several turning connecting rods 17-4, evenly distributed along the axial direction, are mounted on the turning shaft 17-5. These connecting rods 17-4 are evenly distributed circumferentially on the turning shaft 17-5. An inclined turning plate 17-2 is fixed to the outer end of each connecting rod 17-4. Several turning connecting rods 17-1 are mounted at both ends of the turning shaft 17-5, and an inclined turning plate 17-2 is fixed to the outer end of each connecting rod 17-1. Through this arrangement, a three-dimensional material-turning system is constructed. The axially evenly distributed turning connecting rods 17-4 form a longitudinal cutting layer, while the circumferentially evenly distributed rods constitute an annular crushing zone. This dual-dimensional distribution ensures that the fertilizer is fully turned in both the radial and axial directions. The inclined tipping plate 17-2 generates inclined shearing force when rotating, which can simultaneously realize the functions of breaking up agglomerates and scattering materials.

[0021] In addition, for convenient daily maintenance, several connecting rod mounting parts 17-3 are fixedly connected to the turning shaft 17-5 for detachable installation of several turning connecting rods 17-4. The corresponding turning connecting rods 17-4 and connecting rod mounting parts 17-3 are detachably connected by bolts and lock nuts. By setting a detachable connecting rod installation structure, the modular design of the turning components is realized. Specifically, a dedicated connecting rod mounting part 17-3 is fixedly set on the turning shaft 17-5 to provide a standardized installation interface for the turning connecting rods 17-4; the mechanical connection method of bolts and lock nuts ensures that the connection strength meets the mechanical requirements of turning operations and also realizes the function of quick assembly and disassembly.

[0022] like Figure 1 As shown, the aforementioned rotary drive assembly includes a tilting motor 8, and a sprocket drive pair 7 is installed between the output shaft of the tilting motor 8 and the end of the tilting assembly 17. The sprocket drive pair 7 includes a driving sprocket keyed to the output shaft of the tilting motor 8, and a driven sprocket keyed to the end of the tilting assembly 17. A chain drives between the driving sprocket and the driven sprocket. Both the driving sprocket and the driven sprocket are double-row sprockets.

[0023] like Figure 4 As shown, the aforementioned crushing and air-supplementing assembly 18 includes a hollow rotating shaft 18-3 that is rotatably connected between two material-turning mounting arms 21 and is hollow in shape. Several ventilation holes 18-4 are provided on the outer wall of the hollow rotating shaft 18-3. Several crushing knife mechanisms 18-1 and several air-supplementing and material-turning mechanisms 18-2 are installed on the hollow rotating shaft 18-3 at intervals. The inner cavity of each air-supplementing and material-turning mechanism 18-2 is connected to at least two ventilation holes 18-4, and each air-supplementing and material-turning mechanism 18-2 is provided with an air outlet.

[0024] See further Figure 5 The aforementioned air-filling and material-turning mechanism 18-2 includes two sets of stirring shell units arranged in a centrally symmetrical manner and mounted on a hollow rotating shaft 18-3. Each stirring shell unit includes an inclined blade 18-2-2 fixedly connected to the hollow rotating shaft 18-3, and a straight blade 18-2-1 fixedly connected to the inclined blade 18-2-2. The straight blade 18-2-1 and the inclined blade 18-2-2 form an air-filling chamber 18-2-3 that communicates with one or more air vents 18-4 opened on the hollow rotating shaft 18-3. A baffle plate 18-2-4 is fixedly connected inside the air-filling chamber 18-2-3, and a flow channel for gas to pass through is left between the baffle plate 18-2-4 and the inner wall of the air-filling chamber 18-2-3. An air outlet communicating with the air-filling chamber 18-2-3 is provided between the ends of the straight blade 18-2-1 and the inclined blade 18-2-2.

[0025] By incorporating a specially structured gas-feeding and material-turning mechanism 18-2 on the surface of the hollow rotating shaft 18-3, coordinated operation of mechanical crushing and gas supply is achieved. Two centrally symmetrically arranged stirring shell units form a bidirectional stirring structure, simultaneously turning and tossing the material bidirectionally during rotation, improving stirring efficiency. Furthermore, the baffle 18-2-4 within the aeration chamber 18-2-3 forms a specific flow channel with the inner wall of the chamber, forcing the gas to form turbulence within the chamber before exiting from the outlet. This design not only extends the gas residence time within the chamber but also guides the airflow through the flow channel structure, giving the discharged gas a directional jet effect. The outlet is located at the junction of the blade ends, creating a specific angle between the gas jet direction and the material movement direction, preventing material blockage of the pores and ensuring precise injection of gas into the deeper layers of the material. This structure, while achieving mechanical turning and tossing, assists in breaking up agglomerated materials through the shearing effect of the airflow and optimizes the fermentation environment through directional gas supply.

[0026] See further Figure 6 The aforementioned crushing blade mechanism 18-1 includes a mounting blade disc 18-1-3 fixedly connected to a hollow rotating shaft 18-3. Several L-shaped blades 18-1-1 and several L-shaped blades 18-1-2 are symmetrically arranged and detachably connected to the mounting blade disc 18-1-3. The bending directions of the L-shaped blades 18-1-1 and L-shaped blades 18-1-2 are opposite.

[0027] The fertilizer agglomeration is effectively broken up through a specific crushing blade mechanism 18-1. The mounting disc 18-1-3 is a rigid support structure that carries the blades; it can be fixed to the hollow rotating shaft 18-3 by welding or bolting, forming the mounting base for the crushing blade mechanism 18-1. L-shaped blades 18-1-1 and 18-1-2 are blades with right-angle bends, made of high-hardness alloy steel, and fixed to the mounting disc 18-1-3 by bolting, creating a bidirectional cutting action. The detachable connection allows for individual blade replacement; this can be achieved using a blade holder with positioning holes and fastening bolts, facilitating maintenance of worn parts. When contacting agglomerated fertilizer, the forward-bending L-shaped blade 18-1-1 performs splitting crushing, while the reverse-bending L-shaped blade 18-1-2 performs shearing crushing; the synergistic action of the two blades generates a cross-crushing force field. Because the cutting tool is designed to be detachable, when a local cutting tool needs to be replaced due to wear, maintenance can be completed simply by removing the corresponding fasteners, without having to replace the entire cutting head.

[0028] See further Figure 1 The aforementioned rotary drive assembly 2 includes a material-turning motor 2 11, and a sprocket drive pair 2 12 is installed between the output shaft of the material-turning motor 2 11 and the end of the crushing and air-supplying assembly 18. The sprocket drive pair 2 12 includes a driving sprocket keyed to the output shaft of the material-turning motor 2 11, and a driven sprocket keyed to the end of the crushing and air-supplying assembly 18. A chain drives between the driving sprocket and the driven sprocket; both the driving sprocket and the driven sprocket are double-row sprockets.

[0029] Traditional compost turners have a fixed turning mechanism on the frame that cannot be adjusted in terms of working depth. This results in deep turning in the early stages of fermentation damaging the activity of surface microorganisms, while shallow turning in the later stages cannot effectively reduce the humidity of the compost pile.

[0030] To solve the above problems, such as Figure 1 As shown, a lifting guide frame 6 is installed on the traveling mounting frame 3. A lifting mounting seat 13 that rolls in contact with the lifting guide frame 6 is provided in the hollow area in the middle of the traveling mounting frame 3. The device also includes a lifting drive for driving the lifting mounting seat 13 to move up and down along the lifting guide frame 6. Two oppositely arranged tilting mounting arms 16 and two oppositely arranged tilting mounting arms 21 are fixedly installed on the lifting mounting seat 13. Rotary drive assembly 1 and rotary drive assembly 2 are both installed on the lifting mounting seat 13. The lifting drive device includes a number of longitudinally arranged lifting drive cylinders 5 installed on the traveling mounting frame 3. The extended end of each lifting drive cylinder 5 is connected to the lifting mounting seat 13. The device also includes a number of lifting guide assemblies 4 that roll in contact with the lifting guide frame 6 installed on the lifting mounting seat 13.

[0031] like Figure 1 and Figure 2 As shown, the lifting guide frame 6 includes four longitudinally arranged square tubes fixed at the four corners of the traveling mounting frame 3, and the adjacent two square tubes are fixedly connected by several connecting rods; the lifting guide assembly 4 includes a guide wheel seat 4-2 fixed on the lifting mounting base 13, and at least two lifting guide wheels 4-1 are rotatably connected on the guide wheel seat 4-2. The lifting guide wheels 4-1 are in rolling contact with the corresponding square tubes, and the outer roller surface cross section of the lifting guide wheels 4-1 is V-shaped.

[0032] This solution achieves stepless adjustment of the vertical position of the turning component 17 through the coordinated action of the lifting drive device and the guiding component. This solves the problem that existing equipment cannot adjust the turning depth according to the fermentation process, and enables flexible control of the working height of the turning component 17. During shallow turning in the early stages of fermentation, the bottom microbial structure is avoided, while oxygen is injected into the surface material through the aeration component. During deep turning in the later stages of fermentation, the bottom clumps are effectively broken up and moisture evaporation is accelerated. This allows the turning depth to precisely match the process requirements of different fermentation stages, thereby improving overall fermentation efficiency and fertilizer quality.

[0033] Working principle: When the traveling mounting frame 3 reciprocates along the guide rail 1, the material turning component 17 turns the surface material to the deeper layers through rotational motion. Simultaneously, the hollow rotating shaft 18-3 of the crushing and aeration component 18 rotates at high speed under drive. The L-shaped cutters on the crushing blade mechanism 18-1 shear and crush the agglomerated material. During the material stirring process, the gas supplied by the aeration and turning mechanism 18-2, conveyed through the hollow rotating shaft 18-3, enters the aeration chamber 18-2-3 via the vent 18-4, and is finally directionally injected into the material gaps from the outlet. The rotary joint 19 ensures a sealed connection between the air source and the rotating shaft, achieving continuous air supply. The independent control of the two drive components allows for adjustment of the crushing intensity and aeration volume as needed. For example, in the early stages of fermentation, the aeration volume can be increased to promote aerobic bacteria reproduction, while in the later stages, the crushing intensity is enhanced to accelerate moisture evaporation.

[0034] This invention can simultaneously complete three core operations: material turning, agglomeration breaking, and directional aeration. The crushing blade mechanism 18-1 effectively breaks down the agglomerated structure of the material, increasing the oxygen contact area; the aeration and turning mechanism 18-2 directly delivers gas to the working area during the material stirring process, improving the gas exchange conditions of deep materials; the coordinated control of the walking drive device and rotating components allows the equipment to adjust operating parameters according to the fermentation stage. This composite processing mechanism fundamentally solves the technical shortcomings of traditional compost turners with their single function.

Claims

1. A compost turner for bio-fertilizer preparation, characterized in that: The system includes a guide rail (1) fixed to the top of the side wall of the fermentation tank (20), and a walking mounting frame (3) spanning the fermentation tank (20). A walking drive device is installed on the walking mounting frame (3) that rolls in contact with the guide rail (1) and can drive the walking mounting frame (3) to move along its length. Two material-turning mounting arms (16) extending into the fermentation tank (20) and two material-turning mounting arms (21) arranged opposite to each other are provided on the walking mounting frame (3). A material-turning assembly (17) is rotatably connected between the two material-turning mounting arms (16), and a crushing and air-injecting assembly (18) is rotatably connected between the two material-turning mounting arms (21). A rotary joint (19) is connected to the end of the crushing and air-injecting assembly (18) and connected to an air source through the rotary joint (19). The assembly includes a rotary drive assembly 1 mounted on the walking mounting frame (3) for driving the material turning assembly (17) to rotate; and a rotary drive assembly 2 mounted on the walking mounting frame (3) for driving the crushing and air replenishment assembly (18) to rotate; the crushing and air replenishment assembly (18) includes a hollow rotating shaft (18-3) rotatably connected between two material turning mounting arms (21) and is hollow in shape. Several ventilation holes (18-4) are provided on the outer wall of the hollow rotating shaft (18-3). Several crushing knife mechanisms (18-1) and several air replenishment and turning mechanisms (18-2) are installed on the hollow rotating shaft (18-3) at intervals. The inner cavity of each air replenishment and turning mechanism (18-2) is connected to at least two ventilation holes (18-4). An air outlet is provided on each air replenishment and turning mechanism (18-2).

2. The compost turner for bio-fertilizer preparation as described in claim 1, characterized in that: in The walking mounting frame (3) is equipped with a lifting guide frame (6), and a lifting mounting seat (13) that rolls in contact with the lifting guide frame (6) is provided in the hollow area in the middle of the walking mounting frame (3). It also includes a lifting drive device for driving the lifting mounting seat (13) to move up and down along the lifting guide frame (6). Two oppositely arranged tilting mounting arms (16) and two oppositely arranged tilting mounting arms (21) are fixedly installed on the lifting mounting base (13). Rotary drive assembly one and rotary drive assembly two are both installed on the lifting mounting base (13). The lifting drive device includes a number of longitudinally arranged lifting drive cylinders (5) installed on the traveling mounting frame (3). The extended ends of each lifting drive cylinder (5) are connected to the lifting mounting base (13). It also includes a number of lifting guide assemblies (4) installed on the lifting mounting base (13) that are in rolling contact with the lifting guide frame (6).

3. The compost turner for bio-fertilizer preparation as described in claim 1, characterized in that: The material turning assembly (17) includes a material turning shaft (17-5) that is rotatably connected between two material turning mounting arms (16) and arranged laterally. Several material turning connecting rods (17-4) are evenly distributed along the axial direction on the material turning shaft (17-5). Several material turning connecting rods (17-4) are evenly distributed in the circumferential direction of the material turning shaft (17-5). An inclined material turning plate (17-2) is fixed to the outer end of each material turning connecting rod (17-4). Several material turning connecting rods (17-1) are installed at both ends of the material turning shaft (17-5). An inclined material turning plate (17-2) is fixed to the outer end of each material turning connecting rod (17-1).

4. The compost turner for bio-fertilizer preparation as described in claim 1, characterized in that: The air-filling and material-turning mechanism (18-2) includes two sets of agitator shell units arranged centrally symmetrically on a hollow rotating shaft (18-3); each agitator shell unit includes inclined blades (18-2-2) fixed to the hollow rotating shaft (18-3), and straight blades (18-2-1) fixed to the inclined blades (18-2-2). The straight blades (18-2-1) and the inclined blades (18-2-2) form a space opened on the hollow rotating shaft (18-3). An air chamber (18-2-3) with several vent holes (18-4) connected together is provided. A baffle plate (18-2-4) is fixedly connected inside the air chamber (18-2-3). A flow channel for gas to pass through is left between the baffle plate (18-2-4) and the inner wall of the air chamber (18-2-3). An air outlet connected to the air chamber (18-2-3) is provided between the ends of the straight blade (18-2-1) and the oblique blade (18-2-2).

5. The compost turner for bio-fertilizer preparation as described in claim 1, characterized in that: The crushing blade mechanism (18-1) includes a mounting blade disc (18-1-3) fixed on a hollow rotating shaft (18-3). Several L-shaped blades (18-1-1) and several L-shaped blades (18-1-2) are detachably connected to the mounting blade disc (18-1-3). The bending directions of the L-shaped blades (18-1-1) and L-shaped blades (18-1-2) are opposite.

6. The compost turner for bio-fertilizer preparation as described in claim 1, characterized in that: Rotary drive assembly one includes a material turning motor one (8), and a sprocket drive pair one (7) is installed between the output shaft of the material turning motor one (8) and the end of the material turning assembly (17); Rotary drive assembly two includes a material turning motor two (11), and a sprocket drive pair two (12) is installed between the output shaft of the material turning motor two (11) and the end of the crushing and air replenishment assembly (18).

7. The compost turner for bio-fertilizer preparation as described in claim 1, characterized in that: The walking drive device includes two wheel axles (14) rotatably connected and arranged in parallel on the walking mounting frame (3). Each wheel axle (14) has a walking wheel (2) that rolls in contact with the corresponding guide rail (1) at both ends. The device also includes a walking motor (9) mounted on the walking mounting frame (3). A walking drive sprocket (10) is keyed to the output shaft of the walking motor (9). One of the two wheel axles (14) is keyed to a walking driven sprocket (15) corresponding to the walking drive sprocket (10). A chain is connected between the walking drive sprocket (10) and the walking driven sprocket (15).

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