Rotary tillage fertilization device
By adopting a dual-shaft reverse auger design in the rotary tillage and fertilization device, the problem of uneven fertilizer mixing is solved, realizing synchronous and integrated operation of rotary tillage and fertilization, and improving fertilizer uniformity and operation efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIASHILI (YINGCHENG) FERTILIZER CO LTD
- Filing Date
- 2025-06-13
- Publication Date
- 2026-05-12
AI Technical Summary
In existing rotary tillage and fertilization equipment, there is a problem of uneven mixing in the fertilizer bin, especially for fertilizers with large differences in particle size, such as urea and organic fertilizer. This leads to large deviations in nutrient concentration in local areas, affecting the balanced growth of crops.
The dual-axis reverse auger design, combined with rotary tillage components and a transmission system, enables uniform mixing of fertilizer in the storage bin. The reverse conveying of the auger creates a convective mixing field, which, in conjunction with rotary tillage, achieves synchronous fertilization.
It achieves uniform mixing of various fertilizers, improves the uniformity of fertilization, shortens the average operation time per acre, and completes rotary tillage, mixing and fertilization simultaneously, reducing operation steps and time.
Smart Images

Figure CN224218847U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of agricultural machinery, specifically a rotary tillage and fertilization device. Background Technology
[0002] In modern agricultural production, deep application of chemical fertilizers is an important means to improve fertilizer utilization and reduce non-point source pollution.
[0003] In existing technologies, rotary tillage and fertilization are usually completed independently, requiring multiple passes through the field. Some equipment uses a fertilizer tank mounted on the rotary tiller, with multiple fertilizer pipes extending from the tank for simultaneous rotary tillage and fertilization. Existing fertilizer tanks typically use a single-shaft mixer for fertilizer mixing. However, because the fertilizer tank is usually rectangular to accommodate the working width of the rotary tiller, the fertilizer is often only mixed in a localized area around the mixing shaft. Uneven pouring of the fertilizer leads to incomplete mixing, especially with fertilizers of significantly different particle sizes (such as urea and organic fertilizer), resulting in large localized nutrient concentration discrepancies and affecting balanced crop growth. Utility Model Content
[0004] To address the aforementioned technical problems, this utility model provides a rotary tillage fertilization device to solve the problem of insufficient mixing uniformity of fertilizer in existing fertilizer tanks, which typically use single-shaft mixing strip-shaped fertilizer tanks.
[0005] A rotary tillage and fertilization device includes a frame, a vehicle frame mounted on the frame, and a rotary tillage component and a mixing component mounted on the frame.
[0006] The mixing assembly includes a storage bin for storing waste materials, and the storage bin is equipped with several screw conveyors for fertilizer mixing;
[0007] The rotary tiller assembly includes a drive shaft and a tiller shaft rotatably mounted on the frame. A vertical drive is mounted on the drive shaft, and a universal drive shaft is connected to the input end of the vertical drive. The universal drive shaft is connected to the power output shaft of a tractor or other agricultural machinery. The drive shaft and the tiller shaft, as well as the drive shaft and the auger, are all connected by transmission components.
[0008] Preferably, the frame includes a connecting plate for overall support, and the connecting plate is provided with a connecting frame for connecting to the tractor body.
[0009] Preferably, the frame includes side plates disposed on both sides of the frame, a mudguard is disposed on the rear side of the side plate, an arc plate is hinged to the lower end of the side plate, an adjustment unit is hinged to the arc plate, and the adjustment unit is movably hinged to the side plate.
[0010] Preferably, the adjustment unit includes a guide plate hinged to the arc-shaped plate, the guide plate is provided with a groove, a slider is provided in the groove, and the slider is rotatably connected to the side plate.
[0011] Preferably, the bottom of the storage silo is provided with a plurality of fertilizer application components, each fertilizer application component including a fertilizer application pipe communicating with the storage silo, and the fertilizer application pipe is provided with a flow control valve.
[0012] Preferably, a second transmission unit is provided between the two augers, and the two augers adopt a reverse conveying design.
[0013] Compared with the prior art, the present invention has the following beneficial effects:
[0014] 1. This utility model uses a dual-axis reverse auger to form a convective mixing field, which enables uniform mixing of various fertilizers and improves the uniformity of fertilization. At the same time, rotary tillage, mixing and fertilization are completed simultaneously, shortening the average operation time per acre.
[0015] 2. This utility model, through the cooperation of rotary tillage assembly, first transmission unit, second transmission unit, third transmission unit and auger, utilizes vertical transmission device, first transmission unit, second transmission unit and third transmission unit to share tractor power for rotary tillage and material mixing, eliminating the need for a separate power source. Attached Figure Description
[0016] Figure 1 This is a first-view perspective three-dimensional structural diagram of the present invention;
[0017] Figure 2 This is a second-view perspective three-dimensional structural diagram of the present invention;
[0018] Figure 3 This is a schematic diagram of the third-view three-dimensional structure of this utility model.
[0019] In the picture:
[0020] 1. Frame; 101. Connecting plate; 102. Connecting frame; 2. Chassis; 201. Side plate; 202. Arc plate; 203. Mudguard; 204. Adjustment unit; 2041. Guide plate; 2042. Slider; 3. Rotary tillage assembly; 301. Drive shaft; 302. Vertical drive; 303. Universal drive shaft; 304. Rotary tillage shaft; 4. Mixing assembly; 401. Storage bin; 402. Screw; 5. Fertilizer application assembly; 501. Fertilizer pipe; 502. Flow control valve; 6. First transmission unit; 7. Second transmission unit; 8. Third transmission unit. Detailed Implementation
[0021] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.
[0022] As attached Figure 1 To be continued Figure 3 As shown: This utility model provides a rotary tillage and fertilization device, which consists of a frame 1, a vehicle frame 2, a rotary tillage component 3, a mixing component 4 and a fertilization component 5. Through the transmission system, it achieves power coordination and realizes integrated operation of rotary tillage, fertilizer mixing and deep application.
[0023] As attached Figure 1 To be continued Figure 3 As shown: The frame 1 consists of a connecting plate 101 and a connecting frame 102 set on the connecting plate 101. The connecting plate 101 is welded from Q345B channel steel and bears the weight of the whole machine. The connecting frame 102 is quickly connected to the tractor's rear suspension system (such as three-point suspension) and supports height adjustment (adjustment range 0-30cm) to adapt to different crop row spacings.
[0024] As attached Figure 1 To be continued Figure 3 As shown: The frame 2 includes side plates 201 symmetrically distributed on the connecting plate 101. An arc-shaped plate 202 is connected to the lower end of the side plates 201 via a hinge, allowing it to swing with the terrain (swing angle ±15°). The adjustment unit 204 includes a guide plate 2041 and a slider 2042. The slider 2042 is hinged to the side plates 201 via a damping pivot, adjusting the depth of the arc-shaped plate 202 in the soil to adapt to different soils such as clay and sand. A mudguard 203 made of high-molecular-weight polyethylene is installed on the back of the connecting plate 101 to reduce mud splashing during operation and cover fertilizer.
[0025] As attached Figure 1 To be continued Figure 3 As shown: The rotary tiller assembly 3 includes a universal drive shaft 303 for connecting the tractor's power take-off shaft (PTO), with an input speed of 540-720 r / min. Power is distributed to the drive shaft 301 via a vertical drive unit 302. The vertical drive unit 302 employs a bevel gear orthogonal transmission structure, with bevel gears respectively mounted on the universal drive shaft 303 and the drive shaft 301 to achieve vertical transmission. The rotary tiller shaft 304 is rotatably mounted on the side plate 201, on which left and right curved blades are fitted for deep tillage of the soil. The drive shaft 301 drives the rotary tiller shaft 304 to rotate via a third transmission unit 8.
[0026] As attached Figure 3As shown: The mixing assembly 4 includes a storage bin 401 mounted on the connecting plate 101, and a dual-shaft auger 402 with a built-in reverse conveying design. The two augers 402 are driven by the second transmission unit 7 and rotate in opposite directions (clockwise + counterclockwise) to achieve uniform mixing. The transmission shaft 301 drives one of the augers 402 through the first transmission unit 6, without the need for an additional power source.
[0027] The first transmission unit 6, the second transmission unit 7, and the third transmission unit 8 all use chain transmission units.
[0028] As attached Figure 1 As shown: The bottom of the storage bin 401 is equipped with a fertilizer application component 5. The fertilizer application component 5 includes several fertilizer application pipes 501 evenly distributed along the width of the frame, with an outlet spacing of 30-50cm. A flow control valve 502 is installed on it, which can be adjusted manually or electrically. The fertilizer application rate is adjustable from 50-300kg / mu. Combined with the rotary tillage depth, it can achieve deep burial of fertilizer.
[0029] Working principle: The tractor's power take-off shaft transmits power to the vertical drive unit 302 via the universal joint drive shaft 303, and then to the drive shaft 301 via the vertical drive unit 302. The power is then reduced and transmitted to the auger 402 via the first transmission unit 6 to achieve fertilizer mixing. Simultaneously, the power from the drive shaft 301 is transmitted to the rotary tillage shaft 304 via the third transmission unit 8 for rotary tillage.
[0030] Two augers 402 rotating in opposite directions generate radial convection and axial transport, causing fertilizer particles to form an "8"-shaped trajectory within the storage bin 401. This, combined with the soil agitation caused by rotary tillage, achieves three-dimensional mixing. The fertilizer pipe 501 outlet is located 15-20cm behind the rotary tillage blades. The mixture is directly buried in the trenches created by rotary tillage, with a soil cover thickness of 5-8cm to reduce volatilization and runoff losses. The arc-shaped plate 202 oscillates up and down with the terrain, and the slider 2042 slides within the groove of the guide plate 2041 to ensure consistent tillage depth.
[0031] The embodiments of this utility model are given for the purpose of illustration and description. Although embodiments of this utility model have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the utility model. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this utility model.
Claims
1. A rotary tillage and fertilization device, comprising a frame (1), wherein a carriage (2) is mounted on the frame (1), characterized in that: The frame (1) is equipped with a rotary tillage component (3) and a mixing component (4); The mixing assembly (4) includes a storage bin (401) for storing waste materials, and the storage bin (401) is equipped with a plurality of screw conveyors (402) for fertilizer mixing; The rotary tillage assembly (3) includes a drive shaft (301) and a rotary tillage shaft (304) rotatably mounted on the frame (2). A vertical drive (302) is provided on the drive shaft (301). The input end of the vertical drive (302) is connected to a universal drive shaft (303). The universal drive shaft (303) is connected to the power output shaft of a tractor or other agricultural machinery. The drive shaft (301) and the rotary tillage shaft (304), as well as the drive shaft (301) and the auger (402), are all connected by transmission components.
2. The rotary tillage and fertilization device as described in claim 1, characterized in that: The frame (1) includes a connecting plate (101) for overall support, and a connecting frame (102) is provided on the connecting plate (101) for connecting to the body of the tractor.
3. The rotary tillage and fertilization device as described in claim 2, characterized in that: The frame (2) includes side plates (201) on both sides of the frame (1). A mudguard (203) is provided on the rear side of the side plate (201). An arc plate (202) is hinged to the lower end of the side plate (201). An adjustment unit (204) is hinged to the arc plate (202), and the adjustment unit (204) is movably hinged to the side plate (201).
4. The rotary tillage and fertilization device as described in claim 3, characterized in that: The adjustment unit (204) includes a guide plate (2041) hinged on the arc plate (202), the guide plate (2041) is provided with a sliding groove, the sliding groove is provided with a slider (2042), and the slider (2042) is rotatably connected to the side plate (201).
5. The rotary tillage and fertilization device as described in claim 1, characterized in that: The bottom of the storage bin (401) is provided with several fertilizer application components (5), each fertilizer application component (5) including a fertilizer application pipe (501) connected to the storage bin (401), and a flow control valve (502) is provided on the fertilizer application pipe (501).
6. The rotary tillage and fertilization device as described in claim 1, characterized in that: A second transmission unit (7) is provided between the two augers (402), and the two augers (402) adopt a reverse conveying design.