Efficient quantitative corn layered fertilization device

Abstract

The invention discloses an efficient quantitative corn layered fertilization device which comprises a rack, a driving motor, a transmission unit, a material box and three fertilization pipes, a discharging pipe is connected between each fertilizing pipe and the material box, a valve is installed at the position of each discharging pipe, and the driving motor drives the first rotating shafts of the three fertilizing pipes to rotate through the transmission unit. According to the fertilizing device, the driving motor is used for simultaneously driving the first rotating shafts of the three fertilizing pipes to rotate, and the transmission units with different transmission ratios are selected, so that the fertilizing amount of the fertilizing pipes can be adjusted, and layered fertilizing can be realized. The notches of the fan-shaped plates can be intermittently sealed and fixed through the fan-shaped sealing plates, so that intermittent fertilization is realized, and waste of the fertilizer is avoided. When the fertilization pipe is blocked, the blockage can be detected, and when the fertilization pipe is blocked, the bottom end of the second conveying pipe and the bottom end of the air outlet channel can be cleaned by utilizing the fan, and the fertilizer in the buffer space is discharged from the discharging through groove, so that the normal operation of the whole device is ensured.

Description

Technical Field

[0001] The invention relates to the field of agricultural machinery and equipment, and more specifically to a highly efficient quantitative corn stratified fertilization device. Background Art

[0002] Maize (scientific name: Zea mays L.) is a plant of the Poaceae family and the genus Zea, commonly known as corn. Corn is native to Central and South America. It is widely grown in tropical and temperate regions around the world. It has high nutritional value and is an excellent food crop.

[0003] Layered fertilization of crops such as corn can better meet the nutrient needs of crops at different growth stages. However, the current layered fertilization device is prone to blockage of the fertilizer pipe, and the characteristics of the fertilizer itself are the key factors leading to blockage. Some fertilizers are prone to agglomeration due to moisture and other reasons during storage or transportation. After these large pieces of fertilizer enter the fertilizer pipe, it is difficult for them to pass through the narrow channel smoothly, causing blockage. In addition, the distribution ratio and fertilizer supply are sometimes difficult to meet actual needs. In terms of distribution ratio adjustment, most existing devices rely on mechanical structures, which are complicated to operate and have low adjustment accuracy. To change the fertilizer distribution ratio of different fertilization layers, it is often necessary to disassemble and replace multiple components, which is not only time-consuming and labor-intensive, but also difficult to achieve precise adjustment, resulting in corn being unable to obtain sufficient and appropriate nutrients, thereby affecting its growth and development and yield. Summary of the invention

[0004] The present invention aims to overcome the defects of the prior art and provide a highly efficient quantitative corn stratified fertilization device.

[0005] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a layered fertilization device, comprising a frame, a driving motor, a transmission unit, a material box and three fertilizer pipes, the fertilizer pipes comprising a first conveying pipe, a connecting conveying pipe and a second conveying pipe, a first rotating shaft is installed in the first conveying pipe, a first spiral blade is installed at the first rotating shaft, a first conical tooth is fixed at the end of the first rotating shaft, a second rotating shaft is installed in the second conveying pipe, a second spiral blade is installed at the second rotating shaft, and a second conical tooth matching the first conical tooth is fixed at the end of the second rotating shaft; a feed pipe is connected between the first conveying pipe of each fertilizer pipe and the material box, a valve is installed at the feed pipe, and the driving motor drives the first rotating shafts of the three fertilizer pipes to rotate through the transmission unit.

[0006] Further, the connecting delivery pipe is connected to the first delivery pipe, and the second delivery pipe is connected to the connecting delivery pipe.

[0007] Furthermore, the first rotating shaft passes through the connecting and conveying pipe, and the second rotating shaft passes through the connecting and conveying pipe.

[0008] Furthermore, the connecting conveying pipe is an arc-shaped pipe.

[0009] Furthermore, the first delivery pipe is a straight pipe, and the second delivery pipe is a straight pipe.

[0010] Furthermore, a vibrator is installed at the material box.

[0011] The vibrator generates vibrations during the operation of the device, which helps to smoothly feed the fertilizer.

[0012] Furthermore, the first delivery pipe is a horizontal pipe, and the second delivery pipe is a vertical pipe.

[0013] Furthermore, the first rotating shaft and the second rotating shaft of the same fertilizer tube have the same rotational speed.

[0014] This ensures the continuity and stability of fertilizer during transportation.

[0015] Furthermore, the frame includes two side plates, a first mounting plate connecting the two side plates, a second mounting plate connecting the two side plates, and a third mounting plate connecting the two side plates. The first conveying pipes of the three fertilizer pipes are all fixed at the first mounting plate, the first rotating shafts of the three fertilizer pipes all pass through the second mounting plate, and three driving rotating shafts are installed at the third mounting plate; the transmission unit includes three transmission rotating shafts, one end of the transmission rotating shaft is connected to the driving rotating shaft, and the other end is connected to the first rotating shaft. The three transmission rotating shafts are respectively a first transmission rotating shaft, a second transmission rotating shaft and a third transmission rotating shaft. A first synchronous wheel is installed at the first transmission rotating shaft, a second synchronous wheel and a third synchronous wheel are installed at the second transmission rotating shaft, and a fourth synchronous wheel is installed at the third transmission rotating shaft. A first synchronous belt is installed between the first synchronous wheel and the second synchronous wheel, and a second synchronous belt is installed between the third synchronous wheel and the fourth synchronous wheel. The driving motor drives one of the driving rotating shafts.

[0016] Furthermore, the three fertilizer tubes are respectively the first fertilizer tube, the second fertilizer tube and the third fertilizer tube, the rotation speed of the first rotating shaft of the first fertilizer tube is greater than the rotation speed of the first rotating shaft of the second fertilizer tube, and the rotation speed of the first rotating shaft of the second fertilizer tube is greater than the rotation speed of the first rotating shaft of the third fertilizer tube.

[0017] Therefore, precise fertilization can be achieved and fertilizer utilization rate can be improved according to the fertilizer requirements of different soil layers.

[0018] Furthermore, the rotation speed of the first rotating shaft of the first fertilizer pipe is 2.5 times the rotation speed of the first rotating shaft of the third fertilizer pipe; the rotation speed of the first rotating shaft of the second fertilizer pipe is 1.5 times the rotation speed of the first rotating shaft of the third fertilizer pipe.

[0019] Furthermore, the frame also includes a motor frame fixedly connected to the third mounting plate, and the drive motor is installed on the motor frame; the three fertilizer pipes are respectively the first fertilizer pipe, the second fertilizer pipe and the third fertilizer pipe, and the height difference between the second delivery pipe of the first fertilizer pipe and the second delivery pipe of the second fertilizer pipe is equal to the height difference between the second delivery pipe of the second fertilizer pipe and the second delivery pipe of the third fertilizer pipe.

[0020] This allows for stratified fertilization at different depths.

[0021] Furthermore, the height difference between the second conveying pipe of the first fertilizer pipe and the second conveying pipe of the second fertilizer pipe is 10-15 cm, preferably 10 cm.

[0022] Furthermore, the height difference between the second conveying pipe of the second fertilizer pipe and the second conveying pipe of the third fertilizer pipe is 10-15 cm, preferably 10 cm.

[0023] Furthermore, a first bearing is installed between the third mounting plate and the driving shaft, a second bearing is installed between the second mounting plate and the first shaft, an end plate is fixed to one end of the first conveying pipe, a third bearing is installed between the end plate and the first shaft, a fourth bearing is installed between the first shaft and the connecting conveying pipe, and a fifth bearing is installed between the second shaft and the connecting conveying pipe.

[0024] This helps the driving shaft, the first shaft and the second shaft to rotate more stably.

[0025] Furthermore, both ends of the transmission shaft are fixed with end flanges, the end of the driving shaft is fixed with a first flange fixed to the end flange, and the end of the first shaft is fixed with a second flange fixed to the end flange.

[0026] Furthermore, the bottom end of the second conveying pipe is connected to a fixing ring via a radial rod, and a sixth bearing is installed between the fixing ring and the second rotating shaft.

[0027] Thereby, the rotation of the second rotating shaft is more stable.

[0028] Furthermore, the feed pipe includes a first pipe portion connected to the material box, a second pipe portion connected to the first conveying pipe, and a conveying pipe portion connecting the first pipe portion and the second pipe portion.

[0029] Furthermore, three ditching units are installed on the frame.

[0030] Furthermore, the three ditching units are respectively a first ditching unit, a second ditching unit and a third ditching unit, and a height difference between the first ditching unit and the second ditching unit is equal to a height difference between the second ditching unit and the third ditching unit.

[0031] This creates grooves of varying depths in the soil.

[0032] Furthermore, the height difference between the first trenching unit and the second trenching unit is 10-15 cm, preferably 10 cm.

[0033] Furthermore, the height difference between the second trenching unit and the third trenching unit is 10-15 cm, preferably 10 cm.

[0034] Furthermore, the ditching unit is fixedly connected to the first mounting plate.

[0035] Furthermore, the furrowing unit includes a first connecting rod and a furrow opener connected to the first connecting rod.

[0036] Furthermore, a connecting frame is fixed to the frame, and three soil covering units are fixed to the connecting frame.

[0037] Furthermore, the connecting frame is fixedly connected to the first mounting plate.

[0038] Furthermore, the connecting frame includes a mounting rod portion and a connecting rod portion connecting the mounting rod portion and the first mounting plate.

[0039] Furthermore, the soil covering unit includes a second connecting rod and a soil covering plate fixed to the second connecting rod.

[0040] Furthermore, a bellows is fixed at the material box, and a fan is installed at the bellows; the second rotating shaft is a hollow structure with an air outlet channel, the bellows is connected to three air outlet pipes, and each air outlet pipe is inserted into a second rotating shaft; the bottom end of the second rotating shaft has multiple first air outlet holes.

[0041] Furthermore, there are two fans.

[0042] Furthermore, the second conveying pipe is provided with a movable fan-shaped plate and a fixed fan-shaped plate, a fixed guide column is fixed to the fixed fan-shaped plate, a movable sleeve is fixed to the movable fan-shaped plate, a first spring is connected between the movable sleeve and the fixed fan-shaped plate, two fixed end plates are fixed to the fixed fan-shaped plate, two movable end plates are fixed to the movable fan-shaped plate, and a fan-shaped closing plate is fixed to the second rotating shaft.

[0043] Thereby, the fan-shaped closing plate can intermittently close the gap of the fixed fan-shaped plate, so that the second conveying pipe can realize intermittent fertilization.

[0044] Further, the first spring is penetrated by the fixed guide column.

[0045] Furthermore, the number of first springs and fixed guide pillars is equal and corresponds one to one.

[0046] Furthermore, a discharge slot is provided at the fixed end plate, a plurality of second air outlet holes are provided at the second rotating shaft, and a buffer space is formed by surrounding the fixed fan-shaped plate, the movable fan-shaped plate, the two fixed end plates and the two movable end plates, and the second air outlet holes connect the buffer space and the air outlet channel.

[0047] Furthermore, the upper surfaces of the fixed sector plate and the movable sector plate are both inclined.

[0048] This helps the fertilizer fall better.

[0049] Furthermore, a pressure sensor is installed at the end of the movable sleeve, a pressure plate is installed at the pressure sensor, and a second spring is connected between the pressure plate and the end of the fixed guide column.

[0050] Therefore, it is possible to determine whether the fertilizer pipe is blocked based on the detection result of the pressure sensor.

[0051] Furthermore, the first air outlet hole is communicated with the air outlet channel.

[0052] Furthermore, the fixed sector plate is fixedly connected to the second conveying pipe.

[0053] Furthermore, the movable sleeve is inserted by the fixed guide post.

[0054] Furthermore, the bottom end of the air outlet channel is open.

[0055] Furthermore, the movable sector plate is located below the second spiral blade.

[0056] Furthermore, all the first air outlet holes are located below the fixed fan-shaped plate.

[0057] Furthermore, the fan-shaped closing plate is in a semicircular ring shape.

[0058] Furthermore, the central angle of the sector-shaped closing plate is between 160 and 200 degrees.

[0059] Furthermore, the central angle of the fixed sector plate is between 250-290 degrees.

[0060] Furthermore, the central angle of the movable sector plate is between 250-290 degrees.

[0061] Furthermore, there is a gap between the fixed sector plate and the second rotating shaft.

[0062] Furthermore, there is a gap between the movable sector plate and the second conveying pipe, and there is a gap between the movable sector plate and the second rotating shaft.

[0063] Thereby the movable sector plate can be raised and lowered smoothly.

[0064] Furthermore, the number of the fixed guide pillars is three and they are distributed in a ring shape with equal spacing, and the number of the movable sleeves is three and they are distributed in a ring shape with equal spacing.

[0065] Furthermore, one end of the first spring is connected to the fixed sector plate, and the other end is connected to the end of the movable sleeve.

[0066] Furthermore, the plurality of first air outlet holes are distributed in a plurality of circles, and the first air outlet holes in each circle are distributed in a circular shape with equal intervals.

[0067] Furthermore, the number of the second air outlet holes is greater than or equal to three.

[0068] Furthermore, a support frame is fixed at the material box, and each air outlet pipe is fixedly connected to the support frame.

[0069] Furthermore, the support frame includes a first support plate fixed to the material box and three second support plates connected to the first support plate, and each air outlet pipe passes through a second support plate.

[0070] Furthermore, the second rotating shaft can rotate relative to the air outlet pipe.

[0071] Beneficial effects:

[0072] 1. In the fertilizing device of the present application, the second conveying pipes of the three fertilizing pipes have different heights, so that fertilization at different depths can be achieved in layers, and the first rotating shafts of the three fertilizing pipes are driven to rotate simultaneously by a driving motor, and transmission units with different transmission ratios are selected to adjust the amount of fertilizer applied by the fertilizing pipes.

[0073] 2. The fertilizing device of the present application can intermittently close the gap of the fixed fan-shaped plate through the fan-shaped closing plate, thereby realizing intermittent fertilization, which can better cooperate with intermittent sowing and avoid waste of fertilizer.

[0074] 3. In the fertilization device of the present application, blockage of the fertilizer pipe can be detected, and when the fertilizer pipe is blocked, a fan can be used to clean the bottom end of the second conveying pipe and the bottom end of the air outlet channel, and the fertilizer in the buffer space can be discharged from the discharge slot, thereby ensuring the normal operation of the entire device. BRIEF DESCRIPTION OF THE DRAWINGS

[0075] Figure 1 It is a schematic diagram of the fertilization device from a first angle; Figure 2 This is an enlarged view of area A; Figure 3 This is an enlarged view of area B; Figure 4 It is a schematic diagram of the fertilization device from a second angle; Figure 5 This is an enlarged view of area C; Figure 6This is an enlarged view of area D; Figure 7 This is an enlarged view of area E; Figure 8 This is an enlarged view of the E1 region; Fig. 9 It is a schematic diagram of the fertilization device from a third angle, showing a partial cross section of the first fertilization pipe; Fig.10 This is an enlarged view of area F; Fig.11 This is an enlarged view of area G; Fig.12 This is an enlarged view of the G1 region; Fig.13 This is a schematic diagram of the fertilization device from the fourth angle. A part of the second delivery pipe of the first fertilization pipe is hidden to show the internal structure. Fig.14 This is an enlarged view of the H region; Fig.15 This is an enlarged view of area I.

[0076] Description of the accompanying drawings: material box 1; vibrator 1.1; first conveying pipe 2.1; connecting conveying pipe 2.2; second conveying pipe 2.3; radial rod 2.4; fixing ring 2.5; first rotating shaft 3; first conical tooth 3.1; second bearing 3.2; fourth bearing 3.3; second rotating shaft 4; second spiral blade 4.1; second conical tooth 4.2; fifth bearing 4.3; sixth bearing 4.4; first air outlet 4.5; second air outlet 4.6; first pipe part 5.1; conveying pipe part 5.2; second pipe part 5.3; valve 5.4; drive motor 6; transmission rotating shaft 7; first synchronous wheel 7.1; second synchronous wheel 7.2; third synchronous wheel 7.3; fourth synchronous wheel 7.4; first synchronous belt 7.5; second synchronous belt 7.6; driving rotating shaft 8; first shaft Bearing 8.1; side plate 9.1; first mounting plate 9.2; second mounting plate 9.3; third mounting plate 9.4; motor frame 9.5; ditching unit 10; first connecting rod 10.1; ditch opener 10.2; connecting frame 11; mounting rod 11.1; connecting rod 11.2; covering unit 12; second connecting rod 12.1; covering plate 12.2; bellows 13; fan 13.1; air outlet pipe 13.2; movable sector plate 14; movable sleeve 14.1; movable end plate 14.2; fixed sector plate 15; fixed guide column 15.1; first spring 15.2; fixed end plate 15.3; discharge channel 15.4; sector closing plate 16; pressure sensor 17; second spring 17.1; first support plate 18.1; second support plate 18.2. DETAILED DESCRIPTION

[0077] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0078] The present invention provides a high-efficiency quantitative corn layered fertilization device as shown in the figure, comprising a frame, a driving motor 6, a transmission unit, a material box 1 and three fertilizer pipes, wherein the fertilizer pipe comprises a first conveying pipe 2.1, a connecting conveying pipe 2.2 connected to the first conveying pipe 2.1 and a second conveying pipe 2.3 connected to the connecting conveying pipe 2.2, a first rotating shaft 3 passing through the connecting conveying pipe 2.2 is installed in the first conveying pipe 2.1, a first spiral blade is installed at the first rotating shaft 3, a first conical tooth 3.1 is fixed at the end of the first rotating shaft 3, a second rotating shaft 4 passing through the connecting conveying pipe 2.2 is installed in the second conveying pipe 2.3, a second spiral blade 4.1 is installed at the second rotating shaft 4, and a second conical tooth 4.2 matched with the first conical tooth 3.1 is fixed at the end of the second rotating shaft 4; a feeding pipe is connected between the first conveying pipe 2.1 of each fertilizer pipe and the material box 1, a valve 5.4 is installed at the feeding pipe, and the driving motor 6 drives the three first rotating shafts 3 to rotate through the transmission unit.

[0079] The frame includes two side plates 9.1, a first mounting plate 9.2 connecting the two side plates 9.1, a second mounting plate 9.3 connecting the two side plates 9.1 and a third mounting plate 9.4 connecting the two side plates 9.1. The first conveying pipes 2.1 of the three fertilizer pipes are all fixed on the first mounting plate 9.2. The first rotating shafts 3 of the three fertilizer pipes all pass through the second mounting plate 9.3. Three driving rotating shafts 8 are installed on the third mounting plate 9.4. The transmission unit includes three transmission rotating shafts 7. One end of the transmission rotating shaft 7 is connected to the driving rotating shaft 8, and the other end is connected to the first The rotating shaft 3 is connected, and the three transmission rotating shafts 7 are respectively the first transmission rotating shaft, the second transmission rotating shaft and the third transmission rotating shaft. The first transmission rotating shaft is installed with a first synchronous wheel 7.1, the second transmission rotating shaft is installed with a second synchronous wheel 7.2 and a third synchronous wheel 7.3, and the third transmission rotating shaft is installed with a fourth synchronous wheel 7.4. A first synchronous belt 7.5 is installed between the first synchronous wheel 7.1 and the second synchronous wheel 7.2, and a second synchronous belt 7.6 is installed between the third synchronous wheel 7.3 and the fourth synchronous wheel 7.4. The driving motor 6 drives one of the driving rotating shafts 8.

[0080] The frame also includes a motor frame 9.5 fixedly connected to the third mounting plate 9.4, and the drive motor 6 is installed at the motor frame 9.5. A first bearing 8.1 is installed between the third mounting plate 9.4 and the drive shaft 8, a second bearing 3.2 is installed between the second mounting plate 9.3 and the first shaft 3, an end plate is fixed to one end of the first conveying pipe 2.1, a third bearing is installed between the end plate and the first shaft 3, a fourth bearing 3.3 is installed between the first shaft 3 and the connecting conveying pipe 2.2, and a fifth bearing 4.3 is installed between the second shaft 4 and the connecting conveying pipe 2.2. The bottom end of the second conveying pipe 2.3 is connected to a fixing ring 2.5 through a radial rod 2.4, and a sixth bearing 4.4 is installed between the fixing ring 2.5 and the second shaft 4. The feeding pipe includes a first pipe portion 5.1 connected to the material box 1, a second pipe portion 5.3 connected to the first conveying pipe 2.1, and a conveying pipe portion 5.2 connecting the first pipe portion 5.1 and the second pipe portion 5.3. The frame is provided with three trenching units 10. The frame is provided with a connecting frame 11 fixed thereto, and the connecting frame 11 is provided with three soil covering units 12 fixed thereto.

[0081] A bellows 13 is fixed at the material box 1, and a fan 13.1 is installed at the bellows 13; the second rotating shaft 4 is a hollow structure with an air outlet channel, and the bellows 13 is connected to three air outlet pipes 13.2, and each air outlet pipe 13.2 is inserted into a second rotating shaft 4; the bottom end of the second rotating shaft 4 has a plurality of first air outlet holes 4.5 connected to the air outlet channel; the second conveying pipe 2.3 has a movable fan plate 14 and a fixed fan plate 15 fixedly connected to the second conveying pipe 2.3, a fixed guide column 15.1 is fixed at the fixed fan plate 15, a movable sleeve 14.1 inserted into the fixed guide column 15.1 is fixed at the movable fan plate 14, a first spring 15.2 is connected between the movable sleeve 14.1 and the fixed fan plate 15, and the fixed fan plate 15 is fixed with two The movable fan-shaped plate 14 is fixed with two movable end plates 14.2, and a fan-shaped closing plate 16 is fixed at the second rotating shaft 4; the fixed end plate 15.3 has a discharge groove 15.4, and the second rotating shaft 4 has a plurality of second air outlet holes 4.6. The fixed fan-shaped plate 15, the movable fan-shaped plate 14, the two fixed end plates 15.3 and the two movable end plates 14.2 surround and form a buffer space, and the second air outlet holes 4.6 connect the buffer space and the air outlet channel; the upper surfaces of the fixed fan-shaped plate 15 and the movable fan-shaped plate 14 are both inclined; a pressure sensor 17 is installed at the end of the movable sleeve 14.1, and a pressure plate is installed at the pressure sensor 17, and a second spring 17.1 is connected between the pressure plate and the end of the fixed guide column 15.1. The fixed guide pillars 15.1 are provided in three pieces and are distributed in a circular manner with equal spacing; the movable sleeves 14.1 are provided in three pieces and are distributed in a circular manner with equal spacing; one end of the first spring 15.2 is connected to the fixed sector plate 15, and the other end is connected to the end of the movable sleeve 14.1; the plurality of first air outlet holes 4.5 are distributed in multiple circles, and the first air outlet holes in each circle are distributed in a circular manner with equal spacing; the number of the second air outlet holes 4.6 is greater than or equal to three. A support frame is also fixed to the material box 1, and each air outlet pipe 13.2 is fixedly connected to the support frame.

[0082] Working principle: As shown in the figure, the fertilization device of the present application has three trenching units, three fertilizer pipes and three soil covering units. The fertilizer in the material box can be discharged from the discharge pipe, and under the drive of the drive motor, due to the transmission of the transmission unit, the first rotating shaft of the fertilizer pipe can rotate, and the second rotating shaft can rotate under the drive of the first rotating shaft, so that the fertilizer in the material box can be transported and fertilized under the action of the first spiral blade and the second spiral blade. And through the transmission unit, a drive motor can be used to drive the first rotating shafts of the three fertilizer pipes to rotate at the same time, and by selecting a transmission unit with different transmission ratios, the speed ratio of the first rotating shaft of each fertilizer pipe can be controlled, so that the amount of fertilizer applied by the fertilizer pipe can be adjusted. The faster the speed of the first rotating shaft, the faster the fertilization speed of the fertilizer pipe where it is located. And the height of the second conveying pipe of the fertilizer pipe is different, so that layered fertilization can be performed at different depths.

[0083] And the fertilization of the present application adopts the conveying mode of the spiral conveying tube, so that the material is conveyed by the first spiral blade and the second spiral blade, and the second rotating shaft rotates one circle, and the fertilizer is conveyed by a pitch distance. And as shown in the figure, a fan-shaped closing plate is fixed at the second rotating shaft, so that the fan-shaped closing plate will intermittently close the gap of the fixed fan-shaped plate, so that the second conveying tube will intermittently fertilize, so as to better cooperate with the sowing device, because the sowing will be intermittent (a certain distance needs to be maintained between the two seeds), so that intermittent fertilization can be better coordinated with intermittent sowing, so that the position of the fertilizer and the position of the seed are better matched, and the waste of fertilizer is avoided. And when controlling the rotation speed of the first rotating shaft, the first rotating shaft of the fertilizer pipe (third fertilizer pipe) for shallow fertilization rotates one circle, and the sowing device just sows once, so that the cycle of shallow fertilization and the cycle of sowing are consistent, so that the position of shallow fertilization and the position of seeds are better matched (at this time, the seeds are small, and the root system is not developed in the early stage of growth. If the shallow fertilizer is applied in the middle of the two seeds, it is difficult to be absorbed by the early crops). At this time, since the rotation speed of the first rotating shaft of the middle layer fertilization tube (the second fertilization tube) and the deep layer fertilization tube (the first fertilization tube) is faster, the fertilization frequency of the middle layer fertilization tube and the deep layer fertilization tube is faster (some fertilizers will be located in the middle position between the two seeds). However, since the root system of the crop is more mature and expands outward at this time, it is sufficient to absorb the fertilizers in these positions. Therefore, the middle and deep fertilizers in the middle position between the two seeds can also be absorbed by the developed root system, so it will not cause waste of middle and deep fertilizers.

[0084] And because the second conveying pipe is intermittent fertilization, when the fan-shaped closing plate closes the gap of the fixed fan-shaped plate, the material cannot be unloaded at this time, but the second rotating shaft and the first rotating shaft are still rotating, and the material will theoretically still be transported for example, half a pitch of the distance, that is to say, the amount of fertilizer in the second conveying pipe has increased. At this time, due to the design of the movable fan-shaped plate, the material can squeeze the movable fan-shaped plate, so that the buffer space becomes smaller, but the material can press down the movable fan-shaped plate, so that a larger downward space can be obtained. When the fan-shaped closing plate does not block the gap of the fixed fan-shaped plate, the fertilizer can fall quickly (the upper surface of the movable fan-shaped plate is inclined to help the fertilizer fall better), so that the movable fan-shaped plate moves up and the buffer space is restored, so that the buffer space is periodically reduced and restored. At this time, since the upward and downward movement of the movable fan-shaped plate is periodic, there is no blockage at the bottom of the second conveying pipe. When the entire system is operating normally, the measured value of the pressure sensor also changes periodically. When the measured value of the pressure sensor is abnormal, the machine can be shut down to remind maintenance.

[0085] In addition, with use, the bottom end of the air outlet channel of the second rotating shaft and the bottom end of the second conveying pipe may be blocked, or although not blocked much, weeds and soil may adhere to them. And because there is a gap between the movable fan plate and the second rotating shaft, and there is a gap between the movable fan plate and the second conveying pipe, some fertilizers may fall into the buffer space, so when fertilizing, the machine can be stopped at a fixed time, and the fertilizing device of the present application can be raised, so that the fan is started, so that the air outlet channel discharges air, thereby cleaning the bottom end of the second conveying pipe and the bottom end of the air outlet channel, and the fertilizer in the buffer space is discharged from the discharge slot (the second air outlet can force the fertilizer in the buffer space to discharge from the air outlet slot), and the upper surface of the fixed fan plate is inclined, which can make it easier for the fertilizer to be discharged from the buffer space.

[0086] Although the present invention has been illustrated and described with respect to the preferred embodiments, it will be appreciated by those skilled in the art that various changes and modifications may be made to the present invention without departing from the scope of the present invention as defined by the claims.

Claims

1. An efficient quantitative corn stratified fertilization device, characterized in that: It includes a frame, a driving motor, a transmission unit, a material box and three fertilizer pipes. The fertilizer pipes include a first conveying pipe, a connecting conveying pipe and a second conveying pipe. A first rotating shaft is installed in the first conveying pipe, a first spiral blade is installed at the first rotating shaft, and a first conical tooth is fixed at the end of the first rotating shaft. A second rotating shaft is installed in the second conveying pipe, a second spiral blade is installed at the second rotating shaft, and a second conical tooth matching the first conical tooth is fixed at the end of the second rotating shaft. A discharge pipe is connected between the first conveying pipe and the material box of each fertilizer pipe, a valve is installed at the discharge pipe, and the driving motor drives the first rotating shafts of the three fertilizer pipes to rotate through the transmission unit.

2. The efficient quantitative corn stratified fertilization device according to claim 1 is characterized in that: The frame includes two side plates, a first mounting plate connecting the two side plates, a second mounting plate connecting the two side plates, and a third mounting plate connecting the two side plates. The first conveying pipes of the three fertilizer pipes are all fixed at the first mounting plate, the first rotating shafts of the three fertilizer pipes all pass through the second mounting plate, and three driving rotating shafts are installed at the third mounting plate; the transmission unit includes three transmission rotating shafts, one end of the transmission rotating shaft is connected to the driving rotating shaft, and the other end is connected to the first rotating shaft. The three transmission rotating shafts are respectively the first transmission rotating shaft, the second transmission rotating shaft is installed with the second synchronous wheel and the third synchronous wheel, and the third transmission rotating shaft is installed with the fourth synchronous wheel. A first synchronous belt is installed between the first synchronous wheel and the second synchronous wheel, and a second synchronous belt is installed between the third synchronous wheel and the fourth synchronous wheel. The driving motor drives one of the driving rotating shafts.

3. The efficient quantitative corn stratified fertilization device according to claim 2 is characterized in that: The frame also includes a motor frame fixedly connected to the third mounting plate, and the drive motor is installed on the motor frame; the three fertilizer pipes are respectively the first fertilizer pipe, the second fertilizer pipe and the third fertilizer pipe, and the height difference between the second delivery pipe of the first fertilizer pipe and the second delivery pipe of the second fertilizer pipe is equal to the height difference between the second delivery pipe of the second fertilizer pipe and the second delivery pipe of the third fertilizer pipe.

4. The efficient quantitative corn stratified fertilization device according to claim 2, characterized in that: A first bearing is installed between the third mounting plate and the driving shaft, a second bearing is installed between the second mounting plate and the first shaft, an end plate is fixed to one end of the first conveying pipe, a third bearing is installed between the end plate and the first shaft, a fourth bearing is installed between the first shaft and the connecting conveying pipe, and a fifth bearing is installed between the second shaft and the connecting conveying pipe.

5. The efficient quantitative corn stratified fertilization device according to claim 2, characterized in that: End flanges are fixed to both ends of the transmission shaft, a first flange fixed to the end flange is fixed to the end of the driving shaft, and a second flange fixed to the end flange is fixed to the end of the first shaft.

6. The high-efficiency quantitative corn stratified fertilization device according to claim 1, characterized in that: The bottom end of the second conveying pipe is connected to a fixing ring through a radial rod, and a sixth bearing is installed between the fixing ring and the second rotating shaft; the feeding pipe includes a first pipe part connected to the material box, a second pipe part connected to the first conveying pipe, and a conveying pipe part connecting the first pipe part and the second pipe part.

7. The high-efficiency quantitative corn stratified fertilization device according to claim 2, characterized in that: Three ditching units are installed on the frame.

8. The high-efficiency quantitative corn stratified fertilization device according to claim 2, characterized in that: A connecting frame is fixed on the frame, and three soil covering units are fixed on the connecting frame.

9. The high-efficiency quantitative corn stratified fertilization device according to claim 1, characterized in that: A bellows is fixed to the material box, and a fan is installed on the bellows; the second rotating shaft is a hollow structure with an air outlet channel, and the bellows is connected to three air outlet pipes, and each air outlet pipe is inserted into a second rotating shaft; the bottom end of the second rotating shaft has a plurality of first air outlet holes; a movable fan-shaped plate and a fixed fan-shaped plate are provided in the second conveying pipe, a fixed guide column is fixed to the fixed fan-shaped plate, a movable sleeve is fixed to the movable fan-shaped plate, a first spring is connected between the movable sleeve and the fixed fan-shaped plate, two fixed end plates are fixed to the fixed fan-shaped plate, and two fixed end plates are fixed to the movable fan-shaped plate A movable end plate, a fan-shaped closing plate is fixed at the second rotating shaft; a discharge slot is provided at the fixed end plate, and a plurality of second air outlets are provided at the second rotating shaft. The fixed fan-shaped plate, the movable fan-shaped plate, the two fixed end plates and the two movable end plates surround and form a buffer space, and the second air outlets connect the buffer space and the air outlet channel; the upper surfaces of the fixed fan-shaped plate and the movable fan-shaped plate are both inclined; a pressure sensor is installed at the end of the movable sleeve, a pressure plate is installed at the pressure sensor, and a second spring is connected between the pressure plate and the end of the fixed guide column.

10. The high-efficiency quantitative corn stratified fertilization device according to claim 9, characterized in that: The number of the fixed guide pillars is three and they are evenly spaced in a ring shape, the number of the movable sleeves is three and they are evenly spaced in a ring shape, one end of the first spring is connected to the fixed fan-shaped plate, and the other end is connected to the end of the movable sleeve; the plurality of first air outlet holes are distributed in multiple circles, and the first air outlet holes in each circle are evenly spaced in a ring shape; the number of the second air outlet holes is greater than or equal to three.

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