A corn planter

Abstract

The application discloses a corn fertilizer applicator, which comprises a locomotive, a fertilizer solution tank, a material pumping device, a frame and a controller, wherein the material pumping device is connected with the fertilizer solution tank, and the material pumping device is electrically connected with the controller; a fertilizer application frame is movably connected with the frame; a fertilizer solution distribution hose is installed on the fertilizer application frame, a plurality of fertilizer application branch pipes are installed on the fertilizer solution distribution hose at intervals, the fertilizer application branch pipes are movably installed on the fertilizer application frame, and the fertilizer solution distribution hose between adjacent fertilizer application branch pipes is provided with a redundant length; and a fertilizer solution conveying pipe is connected with the material pumping device at one end and connected with the fertilizer solution distribution hose at the other end. The application has the characteristics that liquid fertilizer can be sprayed to multiple rows of corn plants simultaneously.

Description

TECHNICAL FIELD

[0001] The present application relates to a fertilizer application equipment, in particular to a corn fertilizer application machine. BACKGROUND

[0002] Corn contains glutathione, lutein and zeaxanthin, magnesium selenium elements, glutamic acid, dietary fiber, calcium, phosphorus and other nutrients.

[0003] Corn has been planted on a large scale, and the planting process needs to be fertilized according to the production cycle of corn plants. Under normal circumstances, corn plants can be fertilized when they grow to about 40 cm. The traditional fertilization method is manual fertilizer spreading and manual soil covering.

[0004] Although there are now mechanical equipment for fertilization, such as Chinese patent (CN116138016A) discloses a four-row corn cultivation and fertilization vehicle in its specification, wherein the fertilizer application device includes two double-row fertilizer application assemblies located on both sides of the three-wheeled fertilizer application vehicle, the double-row fertilizer application assembly includes a rolling support and two disc-type hole-forming fertilizer application mechanisms, the rolling support includes a U-shaped main support and two U-shaped axle supports, a fertilizer tank is installed on the U-shaped main support, and the two U-shaped axle supports are symmetrically installed at the lower ends of the two support rods on both sides of the U-shaped main support; the disc-type hole-forming fertilizer application mechanism includes a rotating disc with a containing cavity, a hole-forming duckbill assembly, and an opening and closing mechanism. It can be seen that when the three-wheeled fertilizer application vehicle is running, the disc-type hole-forming fertilizer application mechanism travels in the middle of the corn row, and the fertilizer applied is far from the root of the corn plant, which is not conducive to the absorption of the fertilizer by the corn plant. SUMMARY

[0005] The purpose of the present application is to overcome the defects of the prior art and provide a corn fertilizer application machine.

[0006] In order to achieve the above-mentioned purpose of the present application, the following technical solutions are adopted:

[0007] A corn fertilizer application machine, comprising a vehicle, a fertilizer liquid tank, a material pumping pump, a rack and a controller are installed on the vehicle, the material pumping pump is connected with the fertilizer liquid tank, and the material pumping pump is electrically connected with the controller; a fertilizer application frame is movably connected with the rack; a fertilizer liquid distribution hose is installed on the fertilizer application frame, a plurality of fertilizer application branch pipes are installed on the fertilizer liquid distribution hose at intervals, the fertilizer application branch pipes are movably installed on the fertilizer application frame, and a redundant length is reserved on the fertilizer liquid distribution hose between adjacent fertilizer application branch pipes; and a fertilizer liquid conveying pipe is connected at one end with the material pumping pump and at the other end with the fertilizer liquid distribution hose.

[0008] As a further improvement of the technical scheme, the fertilizer frame comprises a support plate, a guide rod installed on the support plate, a lead screw installed on the support plate in parallel with the guide rod, and a moving member having one end movably installed on the guide rod and the other end movably installed on the lead screw, and the moving member is adjusted to move along the length direction of the guide rod and the lead screw to support and install the fertilizer branch pipe.

[0009] As a further improvement of the technical scheme, the moving member comprises a movable block, a guide sleeve installed on one end of the movable block and slidably installed on the guide rod, a driving motor having a driving wheel and installed on one end of the movable block, a driven wheel sleeved on the lead screw and threadedly connected with the lead screw, and a clamping member clamping the driven wheel slidably installed on the lead screw and connected with the movable block, wherein the driving wheel is in meshing transmission connection with the driven wheel, and the driving motor is electrically connected with the controller.

[0010] As a further improvement of the technical scheme, the clamping member comprises a clamping body provided with clamping plates at both ends to form a clamping groove therebetween, and the clamping plates are provided with through holes and a plurality of balls are circumferentially and spacedly installed on one side of the clamping groove.

[0011] As a further improvement of the technical scheme, the corn fertilizer machine further comprises a pipe clamp, and the fertilizer branch pipe is movably installed on the movable block through the pipe clamp.

[0012] As a further improvement of the technical scheme, the corn fertilizer machine further comprises a distance measuring sensor, and the distance measuring sensor is installed on the fertilizer branch pipe.

[0013] As a further improvement of the technical scheme, the fertilizer branch pipe comprises a fertilizer pipe, an adapter movably connected with one end of the fertilizer pipe, and a fertilizer nozzle installed on the other end of the fertilizer pipe.

[0014] As a further improvement of the technical scheme, the corn fertilizer machine further comprises a circulation pipe, a circulation short pipe, a circulation hose and stirring pieces, the circulation short pipe is installed on the fertilizer liquid tank and one end thereof is inserted into the fertilizer liquid tank and connected with the circulation hose placed in the fertilizer liquid tank, a plurality of stirring pieces are spacedly installed on the circulation hose along the length direction, one end of the circulation pipe is connected with the fertilizer liquid conveying pipe, the other end thereof is extended and connected with the other end of the circulation short pipe, and the circulation pipe is installed with a circulation valve, and the circulation valve is electrically connected with the controller.

[0015] As a further improvement of the technical scheme, the corn fertilizer machine further comprises a discharging valve, a regulating valve and a flow meter; the discharging valve, the regulating valve and the flow meter are sequentially arranged on the fertilizer liquid conveying pipe along the direction of the fertilizer liquid flow; and the discharging valve, the regulating valve and the flow meter are electrically connected with the controller.

[0016] As a further improvement of the technical scheme, the corn fertilizer machine further comprises a rolling support, a liquid level sensor and a Ph sensor; a plurality of rolling supports are arranged at intervals on the fertilizer frame; the fertilizer liquid tank is provided with the liquid level sensor and the Ph sensor; and the liquid level sensor and the Ph sensor are electrically connected with the controller.

[0017] The present application has significant progress compared with the prior art.

[0018] The present application has the advantages of being capable of simultaneously realizing multi-row fertilization; the fertilizer liquid distribution hose is arranged on the fertilizer frame, a plurality of fertilizer liquid branch pipes are arranged at intervals on the fertilizer liquid distribution hose, and the plurality of fertilizer liquid branch pipes can simultaneously spray liquid fertilizer to different rows of corn plants; and the fertilizer liquid branch pipe can be adjusted and moved on the fertilizer frame, thereby being convenient for application to different row spacings. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the specific embodiments of the present application or the technical scheme in the prior art, the drawings needed to be used in the specific embodiments or the prior art description will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.

[0020] Figure 1 Fig. 1 is a structural diagram of the corn fertilizer machine of the present application;

[0021] Figure 2 Fig. 2 is a structural diagram of the fertilizer liquid branch pipe arranged on the fertilizer frame in the present application;

[0022] Figure 3 Fig. 3 is a structural diagram of the fertilizer liquid branch pipe arranged on the moving member in the present application;

[0023] Figure 4 Fig. 4 is a structural diagram of the moving member in the present application;

[0024] Figure 5 Fig. 5 is a structural diagram of the clamping member in the present application;

[0025] Figure 6 Fig. 6 is a structural diagram of the driving wheel and the driven wheel meshing transmission, and the driven wheel arranged on the clamping member in the present application;

[0026] The numbers in the drawings and the corresponding names of each part are as follows:

[0027] 1-Locomotive, 2-Fertilizer tank support, 3-Ph sensor, 4-Fertilizer tank, 5-Level sensor, 6-Tank cover, 7-Tank inlet, 8-Circulation hose, 9-Circulation pipe, 10-Circulation short pipe, 11-Suction pipe, 12-Feed valve, 13-Suction pump, 14-Circulation valve, 15-Discharge valve, 16-Regulating valve, 17-Flow meter, 18-Fertilizer delivery pipe, 19-Fertilizer distribution hose, 20-Frame, 21-Fertilization branch pipe, 211-Fertilization short pipe, 212-Union joint, 213-Pipe clamp, 214-Fertilization pipe, 215-Fertilization nozzle, 22-Distance sensor 23-Rolling support component, 231-Auxiliary support frame, 232-Traveling wheel, 24-Fertilizer applicator, 241-Support plate, 242-Support, 243-Screw rod, 244-Guide rod, 245-Moving component, 2451-Moving block, 2452-Guide sleeve, 2453-Drive motor, 2454-Drive wheel, 2455-Driven wheel, 2456-Clamping component, 24561-Clamping groove, 24562-Clamping body, 245621-Clamping plate, 24563-Through hole, 24564-Ball bearing, 25-Agitator plate, 26-Controller, 27-Bolt. Detailed Implementation

[0028] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings and embodiments. Obviously, the described embodiments are only a part of the embodiments in this application. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this application.

[0029] Example 1:

[0030] like Figures 1-6 As shown, the present invention discloses a corn fertilizer applicator, comprising a locomotive 1, a fertilizer applicator frame 24, and a fertilizer liquid delivery pipe 18. The locomotive 1 is equipped with a fertilizer liquid tank 4, a pump 13, a frame 20, and a controller 26. The pump 13 is connected to the fertilizer liquid tank 4 and electrically connected to the controller 26. The fertilizer applicator frame 24 is movably connected to the frame 20. A fertilizer liquid distribution hose 19 is installed on the fertilizer applicator frame 24, and multiple fertilizer branch pipes 21 are installed on it at intervals. The fertilizer branch pipes 21 are movably installed on the fertilizer applicator frame 24, and redundant lengths are reserved between adjacent fertilizer branch pipes 21. One end of the fertilizer liquid delivery pipe 18 is connected to the pump 13, and the other end is connected to the fertilizer liquid distribution hose 19.

[0031] The fertilizer tank 4 is equipped with an inlet 7, and a lid 6 is placed over the inlet 7. When spraying liquid fertilizer, the lid 6 can be opened, and the fertilizer can be poured into the fertilizer tank through the inlet 7.

[0032] The fertilizer solution tank 4 is fixedly installed on the vehicle 1 by a fertilizer solution tank support. The vehicle 1 moves with the fertilizer solution tank.

[0033] The fertilizer frame 24 is movably connected with the frame 20 in the following manner: the frame 20 is provided with a connecting plate, the connecting plate is provided with a plurality of through holes, the fertilizer frame is provided with a plurality of through holes corresponding to the through holes of the connecting plate, and the connecting plate and the fertilizer frame are fixedly connected by bolts 27. When the bolts 27 are removed, the fertilizer frame 24 and the frame 20 can be separated.

[0034] It should be noted that the plurality of fertilizer branch pipes 21 extend to the roots of the corn plants during fertilization, and are moved along the spacing between the two rows of corn plants by the vehicle.

[0035] It should be further noted that the fertilizer branch pipes can move on the fertilizer frame 24, and the fertilizer solution distribution hose 19 between the adjacent two fertilizer branch pipes is provided with a redundant length, which can facilitate the adjustment of the spacing between the adjacent two fertilizer branch pipes. It can also facilitate the adjustment of the fertilizer branch pipes to adapt to corn plants with different row spacings, so that effective fertilization can be achieved and the distance between the sprayed fertilizer solution points and the corn plants is avoided.

[0036] In some embodiments of the present disclosure, a structure of the fertilizer frame is provided.

[0037] As shown in Figure 1 and 2 , the fertilizer frame includes a support plate 241, a guide rod 244, a lead screw 243, and a moving member 245. The guide rod 244 is installed on the support plate 241; the lead screw 243 is installed on the support plate 241 in parallel with the guide rod 244; one end of the moving member 245 is movably installed on the guide rod 244, and the other end is movably installed on the lead screw 243; the moving member 245 moves along the length direction of the guide rod 244 and the lead screw 243 for supporting and installing the fertilizer branch pipe 21.

[0038] The moving member 245 drives the fertilizer branch pipe 21 to move along the length direction of the fertilizer frame 24, adjusts the position of the fertilizer branch pipe, facilitates the fertilization of the corn plant row, achieves effective fertilization, and avoids the fertilizer applied not being completely absorbed by the corn due to the large distance from the corn plant row.

[0039] The guide rod 244 can guide the moving member in a direction.

[0040] The support plate 241 is connected with the frame 20 by a plurality of bolts 27.

[0041] As shown in Figure 2 , the guide rod 244 and the lead screw 243 are arranged in parallel and spaced apart. Both ends of the guide rod 244 and the lead screw 243 are installed on the support plate 241 by a support 242.

[0042] In some embodiments of the present disclosure, a structure of the moving member is provided.

[0043] As shown in Figure 4 , the moving member 245 comprises a movable block 2451, a guide sleeve 2452, a driving motor 2453, a driven wheel 2455, and a clamping member 2456. The guide sleeve 2452 is installed at one end of the movable block 2451 and is slidingly installed on the guide rod 244; the driving motor 2453 has a driving wheel 2454 and is installed at one end of the movable block 2451; the driven wheel 2455 is sleeved on the lead screw 243 and is threadedly connected with the lead screw 243; the clamping member 2456 clamps the driven wheel 2455 and is slidingly installed on the lead screw 243 and is connected with the movable block 2451; wherein the driving motor 2453 is electrically connected with the controller 26.

[0044] The driving motor 2453 is fixedly installed on the movable block 2451.

[0045] The clamping member 2456 is sleeved on the lead screw 243 and is movable along the length direction of the lead screw. The clamping member 2456 clamps the driven wheel 2455 therein, and when the driven wheel 2455 moves on the lead screw 243, a pushing force is generated on the clamping member, so that the clamping member moves on the lead screw along with the driven wheel, and the clamping member drives the movable block 2451 to move, and the movable block 2451 drives the fertilization branch pipe 21 installed thereon to move.

[0046] Working mode of the moving member:

[0047] The driving motor 2453 drives the driving wheel 2453 to rotate, the driving wheel 2453 is in meshing transmission connection with the driven wheel 2455, the driven wheel 2455 is driven by the driving wheel 2453 to rotate, the driven wheel 2455 is threadedly connected with the lead screw, and after the driven wheel 2455 rotates, the driven wheel 2455 moves along the length direction of the lead screw 243, the driven wheel 2455 moves while pushing the clamping member 2456, the clamping member 2456 drives the movable block 2451 to move, and the movable block 2451 moves while driving the fertilization branch pipe 21 to move, so as to adjust the distance between the adjacent two fertilizations, and the fertilization branch pipe can be adjusted close to the corn plant row, the liquid fertilizer is effectively sprayed to the corn plant row, and the corn is effectively fertilized.

[0048] In some embodiments of the present disclosure, a structure of the clamping member is provided.

[0049] As shown in Figure 5 , the clamping member comprises a clamping body 24562, two ends of the clamping body 24562 are provided with clamping plates 245621, and a clamping groove 24561 is formed between the two clamping plates 245621; the clamping plate 245621 is provided with a through hole 24563, and a plurality of ball bearings 24564 are circumferentially and interval ly installed on one side of the clamping groove 24561.

[0050] The clamping plate 245621 is sleeved on the screw rod 243 through the through hole 24563.

[0051] A plurality of balls 24564 are installed on the clamping plate 245621 at intervals in a circle, so that the clamping plate 245621 is connected to the driving wheel 2454 and the driven wheel 2456 through the plurality of balls 24564, and the contact wear between the driving wheel 2454, the driven wheel 2456 and the clamping plate is reduced.

[0052] In some embodiments of the present disclosure, an active connection mode of the fertilizer branch pipe and the movable block is provided.

[0053] The fertilizer branch pipe 21 is movably installed on the movable block 2451 through the pipe clamp 213. The number of the pipe clamp 213 can be 1, 2, 3, 4, 5 or 6, etc. The pipe clamp 213 and the movable block 2451 can be connected through bolts.

[0054] In some embodiments of the present disclosure, a distance measuring sensor 22 is added. The distance measuring sensor 22 is installed on the fertilizer branch pipe 21. The distance measuring sensor 22 is electrically connected to the controller 26. The distance between the fertilizer pipe and the corn plant row can be pre-set on the controller.

[0055] When the fertilizer branch pipe 21 moves to spray the fertilizer liquid, the distance measuring sensor 22 measures the distance between the corn plant row and the fertilizer branch pipe while following the movement. The distance between the corn plant row and the fertilizer branch pipe can be set on the controller to be 5 to 20 cm (it can be understood that the distance range between the corn plant row and the fertilizer branch pipe can be adjusted according to the specific fertilization needs). When the distance monitored by the distance measuring sensor 22 is less than 5 cm or more than 20 cm, the controller controls the driving motor 2453 to work, the driving motor 2453 drives the driving wheel 2454 to rotate, the driving wheel 2454 is in driving connection with the driven wheel 2456, the driving wheel 2454 drives the driven wheel 2456 to rotate, the driven wheel 2456 is in threaded connection with the screw rod 243, the driven wheel 2456 moves along the screw rod 243, the driven wheel pushes the clamping piece, the clamping piece drives the movable block, the movable block drives the fertilizer branch pipe to move, and the distance between the fertilizer branch pipe and the corn plant row is adjusted.

[0056] In some embodiments of the present disclosure, a structure of the fertilizer branch pipe is provided.

[0057] As shown in Figures 1 to 3 , the fertilizer branch pipe includes a fertilizer pipe 214, a movable joint 212 and a fertilizer nozzle 215. The movable joint 212 is movably connected with one end of the fertilizer pipe 214; and the fertilizer nozzle 215 is installed on the other end of the fertilizer pipe 214.

[0058] In order to facilitate the connection of the movable joint and the fertilizer liquid distribution hose 19, a fertilizer short pipe 211 is added, the fertilizer short pipe 211 is installed on the fertilizer liquid distribution hose 19, and the movable joint 212 is connected with the fertilizer short pipe 211.

[0059] The fertilizer application pipe 214 is connected to the fertilizer solution distribution hose 19 via a union connector, which facilitates the installation of the fertilizer application pipe 214 onto the fertilizer solution distribution hose and also facilitates the removal of the fertilizer application pipe 214 from the fertilizer solution distribution hose 19.

[0060] In some embodiments of this disclosure, a structure for agitating the fertilizer tank is provided, which includes a circulation pipe 9, a circulation short pipe 10, a circulation hose 8, and an agitator 25.

[0061] like Figure 1 As shown, the circulation short pipe 10 is installed on the fertilizer solution tank 4, and one end of it is inserted into the fertilizer solution tank 4 and connected to the circulation hose 8 placed inside the fertilizer solution tank 4. Multiple agitators 25 are installed at intervals along the length of the circulation hose 8. One end of the circulation pipe 9 is connected to the fertilizer solution delivery pipe 18, and the other end extends to connect to the other end of the circulation short pipe 10. The circulation pipe 9 is equipped with a circulation valve 14. The circulation valve 14 is electrically connected to the controller 26.

[0062] The stirring hose 8 drives the multiple stirring plates 25 installed on it, which helps to increase the contact area between the stirring hose and the fertilizer solution in the fertilizer tank, and further facilitates the stirring of the fertilizer solution in the fertilizer tank.

[0063] Work style:

[0064] The pump 13 draws fertilizer solution from the fertilizer tank 4 and delivers it to the fertilizer delivery pipe 18. The circulation pipe 9 is connected to the fertilizer delivery pipe 18. When the circulation valve 14 is opened, the fertilizer solution can be delivered to the circulation short pipe 10 through the circulation pipe 9. The circulation short pipe 10 delivers the fertilizer solution to the stirring hose 8. The stirring hose 8 is oscillating due to the pressure of the fertilizer solution delivered inside it. The stirring hose 8 then drives the multiple stirring blades 25 installed on it to oscillate. After oscillating, the stirring hose 8 stirs the fertilizer solution in the fertilizer tank 4, making the fertilizer solution in the fertilizer tank evenly mixed.

[0065] In some embodiments of this disclosure, in order to facilitate the control of the fertilizer liquid flow rate of the fertilizer delivery pipe, a discharge valve 15, a regulating valve 16 and a flow meter 17 are added; the discharge valve 15, the regulating valve 16 and the flow meter 17 are installed sequentially on the fertilizer liquid delivery pipe 18 along the fertilizer liquid flow direction; wherein, the discharge valve 15, the regulating valve 16 and the flow meter 17 are all electrically connected to the controller 26.

[0066] The regulating valve 16 can adjust the amount of fertilizer solution output from the fertilizer delivery pipe. The amount of fertilizer solution output can be controlled according to the size of the corn seedlings.

[0067] The flow meter 17 monitors the amount of fertilizer solution delivered to the fertilizer solution distribution hose 19 in real time and transmits data signals to the controller 26, which processes, analyzes and counts the data signals from the flow meter 17. The controller has a display screen, and the controller counts the amount of fertilizer and displays the corresponding data information on the display screen, so that the operator can know the amount of sprayed fertilizer solution.

[0068] In some embodiments of the present disclosure, the rolling bracket 23, the liquid level sensor 5 and the Ph sensor 3 are installed; a plurality of rolling brackets 23 are installed at intervals on the fertilizer frame 24; the fertilizer solution tank 4 is installed with the liquid level sensor 5 and the Ph sensor 3, and the liquid level sensor 5 and the Ph sensor 3 are electrically connected with the controller 26.

[0069] The rolling bracket 23 includes an auxiliary support frame 231 and a running wheel 232, and the running wheel 232 is installed on the auxiliary support frame 231. The running wheel 232 can rotate relative to the support frame 231.

[0070] As shown in Figure 1 and 2 A plurality of rolling brackets 23 are installed on the fertilizer frame 24, and the rolling bracket 23 supports the fertilizer frame to prevent the fertilizer frame from sagging.

[0071] The liquid level sensor 5 monitors the liquid level in the fertilizer solution tank 4 in real time and transmits corresponding data signals to the controller.

[0072] The Ph sensor 3 monitors the Ph value in the fertilizer solution tank 4 in real time and transmits corresponding data signals to the controller.

[0073] According to the above embodiments of the present application, the working mode of the present application is as follows:

[0074] During fertilization, the granular fertilizer is put into the fertilizer solution tank 4, and an amount of water matching the granular fertilizer is added into the fertilizer solution tank 4.

[0075] By controlling to close the discharge valve 15, open the circulating valve 14 and start the pumping pump 13, the pumping pump 13 draws the liquid in the fertilizer solution tank 4 through the pumping pipe 11 and delivers the liquid to the fertilizer solution delivery pipe 18, and the fertilizer solution delivery pipe 18 delivers the liquid to the circulating pipe 9, and the circulating pipe 9 delivers the liquid to the stirring hose 8. The stirring hose 8 swings under the action of the liquid pressure in the stirring hose 8 and drives the stirring blades 25 on the stirring hose 8 to swing, which is beneficial to increase the contact area of the stirring hose 8 with the liquid in the fertilizer solution tank 4 and improve the stirring efficiency. After stirring for 10 to 20 minutes, the discharge valve 15 is opened, the fertilizer solution delivery pipe 18 delivers the fertilizer solution to the fertilizer solution distribution hose 19, and the fertilizer solution distribution hose 19 can distribute the fertilizer solution in it to each fertilizer branch pipe 21, and the fertilizer branch pipe 21 sprays the fertilizer solution to the corn plant row to realize fertilization to the corn plant row.

[0076] Obviously, the above embodiments are merely example for clearly illustrating but not limitation to the embodiments. Based on the above description, other different forms of changes or variations can be made by those skilled in the art. Here, all the embodiments need not and can not be enumerated. The obvious changes or variations derived from the above description are still within the protection scope of the present application.

Claims

1. A corn planter characterized by: The utility model provides a kind of machine (1), which is provided with a fertilizer tank (4), a pumping pump (13), a rack (20) and a controller (26) mounted thereon.The pumping pump (13) is connected with the fertilizer tank (4), and the pumping pump (13) is electrically connected with the controller (26).The machine further comprises a fertilizer application rack (24) movably connected with the rack (20), a fertilizer distribution hose (19) mounted on the fertilizer application rack (24), a plurality of fertilizer branch pipes (21) spaced apart on the fertilizer distribution hose (19), and a fertilizer delivery pipe (18) having one end connected with the pumping pump (13) and the other end connected with the fertilizer distribution hose (19). The fertilizer application rack comprises a support plate (241), a guide rod (244) mounted on the support plate (241), a lead screw (243) mounted on the support plate (241) in parallel with the guide rod (244), and a moving member (245) having one end movably mounted on the guide rod (244) and the other end movably mounted on the lead screw (243).The moving member (245) is adjusted and moved along the length direction of the guide rod (244) and the lead screw (243) to support and mount the fertilizer branch pipes (21). The moving member (245) comprises a movable block (2451), a guide sleeve (2452) mounted on one end of the movable block (2451) and slidably mounted on the guide rod (244), a drive motor (2453) having a drive wheel (2454) mounted on one end of the movable block (2451), a driven wheel (2455) sleeved on the lead screw (243) and threadedly connected with the lead screw (243), and a clamping member (2456) clamping the driven wheel (2455) slidably mounted on the lead screw (243) and connected with the movable block (2451).The drive wheel (2454) is in meshing transmission connection with the driven wheel (2455), and the drive motor (2453) is electrically connected with the controller (26). The clamping member comprises a clamping body (24562) having clamping plates (245621) at both ends, a clamping groove (24561) formed between the two clamping plates (245621), and a plurality of ball bearings circumferentially spaced apart on one side of the clamping plate (245621) near the clamping groove (24561) and passing through the through holes (24563). The fertilizer branch pipe (21) is movably mounted on the movable block (2451) by a pipe clamp (213). ​ The distance measuring sensor (22) is installed on the fertilization branch pipe (21); The circulating pipe (9), the circulating short pipe (10), the circulating hose (8) and the stirring piece (25) are further included. The circulating short pipe (10) is installed on the fertilizer solution tank (4), and one end of the circulating short pipe (10) is inserted into the fertilizer solution tank (4) and connected with the circulating hose (8) placed in the fertilizer solution tank (4). A plurality of stirring pieces (25) are installed on the circulating hose (8) along the length direction at intervals. One end of the circulating pipe (9) is connected with the fertilizer solution conveying pipe (18), and the other end of the circulating pipe (9) is connected with the other end of the circulating short pipe (10). The circulating valve (14) is installed on the circulating pipe (9). The circulating valve (14) is electrically connected with the controller (26); The discharge valve (15), the adjusting valve (16) and the flowmeter (17) are further included. The discharge valve (15), the adjusting valve (16) and the flowmeter (17) are installed on the fertilizer solution conveying pipe (18) along the fertilizer solution flow direction in sequence. The discharge valve (15), the adjusting valve (16) and the flowmeter (17) are electrically connected with the controller (26); The rolling support (23), the liquid level sensor (5) and the Ph sensor (3) are further included. A plurality of rolling supports (23) are installed on the fertilization frame (24) at intervals. The liquid level sensor (5) and the Ph sensor (3) are installed on the fertilizer solution tank (4). The liquid level sensor (5) and the Ph sensor (3) are electrically connected with the controller (26).

2. The corn planter of claim 1, wherein: The fertilization branch pipe includes The fertilization pipe (214); The live joint (212) is movably connected with one end of the fertilization pipe (214); and The fertilization nozzle (215) is installed on the other end of the fertilization pipe (214).

Images