Fertilizer applicator

Abstract

The fertilizer applicator comprises a liquid fertilizer box, a bottom plate is fixedly mounted at the bottom of the liquid fertilizer box, universal wheels are rotatably mounted at four corners of the bottom of the bottom plate, and a water distribution box with an opening in the bottom is fixedly connected to the top of the liquid fertilizer box. A PLC and a water pump electrically connected with the PLC are fixedly mounted at the top of the liquid fertilizer box, a water inlet of the water pump extends into the liquid fertilizer box and is fixedly communicated with a water suction pipe, and the bottom end of the water suction pipe is fixedly communicated with a filter screen cover. According to the utility model, a series of structures are arranged, so that accurate quantitative fertilization can be conveniently carried out at multiple points on two sides, the fertilization efficiency is effectively improved in a mode of synchronous fertilization at multiple points on two sides, the phenomenon of waste or insufficient fertilization at a single position is effectively avoided by utilizing a quantitative fertilization mode, the fertilization uniformity and the fertilization amount accuracy are improved, and the fertilization efficiency is improved. And the fertilization spacing can be accurately adjusted according to the positions of the fertilization pits on the two sides, so that the fertilization accuracy and applicability are further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fertilizer applicators, in particular to a fertilizer applicator. Background Art

[0002] In order to ensure the growth of greenhouse fruits and vegetables, fertilization is used to strengthen the seedlings in the early stage of growth. Liquid fertilizer for fruits and vegetables is a kind of liquid fertilizer commonly used for fertilizing the seedlings of fruits and vegetables, such as liquid ammonia, ammonia water, carbonized ammonia water, and a mixed aqueous solution (or suspension) containing nitrogen fertilizer, phosphorus fertilizer and potassium fertilizer (or salt); for the fertilization of liquid fertilizer, currently manual spraying equipment is used for spraying fertilizer, or portable fertilizer buckets are used for fertilization while walking;

[0003] The existing liquid fertilizer fertilization for greenhouse fruits and vegetables has the following shortcomings: 1. When manual mobile fertilization is carried out using sprayers and other spraying equipment, only one side can be fertilized at a time, and the fertilization efficiency is not ideal; 2. The amount of liquid fertilizer applied at a single location cannot be automatically and accurately controlled, and the phenomenon of excessive waste or insufficient fertilizer application at a single location is prone to occur, and the uniformity and accuracy of fertilization are not ideal; In view of this, we propose a fertilizer applicator to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide a fertilizer applicator to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a fertilizer applicator, comprising a liquid fertilizer box, a bottom plate is fixedly installed at the bottom of the liquid fertilizer box, universal wheels are rotatably installed at the four corners of the bottom of the bottom plate, a water separation box with an opening at the bottom is fixedly connected to the top of the liquid fertilizer box, a PLC controller and a water pump electrically connected to the top of the liquid fertilizer box are fixedly installed, a water inlet of the water pump extends into the liquid fertilizer box and is connected and fixed with a water suction pipe, a filter cover is connected and fixed at the bottom end of the water suction pipe, a water outlet of the water pump extends into the water separation box, and the liquid fertilizer in the liquid fertilizer box is extracted by the water pump when the water pump is controlled by the PLC controller and turned on, and pumped into the water separation box;

[0006] Both sides of the water diversion box are connected and fixed with telescopic transverse water conducting components, and the repelling ends of the two telescopic transverse water conducting components are connected and fixed with round tubes with blocking structures at the front and rear ends, and a plurality of quantitative fertilization components electrically connected to the PLC controller are connected and fixed at equal intervals at the bottom of the round tubes. The telescopic transverse water conducting components are used to transversely guide the corresponding round tubes and to pass the liquid fertilizer in the water diversion box into the round tubes. The quantitative fertilization components are used to detect the amount of fertilizer and automatically close when the preset amount is reached to perform quantitative fertilization work;

[0007] The top of the water diversion box is fixedly connected with a U-shaped seat, and threaded cross-guide drive assemblies are installed between both sides of the U-shaped seat and the top of the liquid fertilizer box. The threaded cross-guide drive assembly is fixedly connected to the top of the corresponding telescopic cross-guide water-conducting assembly. A dual-axis motor located in the U-shaped seat is fixedly installed on the top of the water diversion box, and the close ends of the two threaded cross-guide drive assemblies are respectively fixedly connected to the repelling ends of the two output shafts of the dual-axis motor. The two threaded cross-guide drive assemblies are used to drive the two round tubes to repel or move close to each other through the two telescopic cross-guide water-conducting assemblies when the dual-axis motor is started, so as to realize precise adjustment of the fertilization spacing according to the fertilization pits on both sides.

[0008] Preferably, the telescopic horizontal water-conducting assembly includes an inner tube, the adjacent ends of the two inner tubes are respectively connected and fixed with the two sides of the water diversion box, the sealing sliding sleeve on the inner tube is provided with an outer tube, and the repelling ends of the two outer tubes are respectively connected and fixed with the adjacent sides of the two circular tubes.

[0009] Preferably, the quantitative fertilization component includes a liquid flow sensor connected and fixed at the bottom of the corresponding circular tube, the bottom of the liquid flow sensor is connected and fixed with a solenoid valve, the bottom of the solenoid valve is connected and fixed with a fertilizer discharge cover, and the solenoid valve and the liquid flow sensor are both electrically connected to the PLC controller.

[0010] Preferably, the threaded cross-guide drive assembly includes an L-shaped support plate fixedly connected to the top of the liquid fertilizer box, two L-shaped support plates are symmetrically arranged, the L-shaped support plate is slidably sleeved on the corresponding outer tube, the adjacent sides of the two L-shaped support plates are respectively fixedly connected to the two sides of the U-shaped seat, the inner walls of the repelling sides of the two L-shaped support plates are respectively rotatably installed with screws between the two sides of the U-shaped seat, the adjacent ends of the two screws are respectively fixedly connected to the repelling ends of the two output shafts of the dual-axis motor, the thread rotation directions of the two screws are opposite, and a movable seat is threadedly sleeved on the screw, the movable seat is slidably sleeved on the corresponding L-shaped support plate, and the bottom of the movable seat is fixedly connected to the top of the corresponding outer tube.

[0011] Preferably, four support rods are fixedly connected in a rectangular shape between the bottom of the liquid fertilizer box and the top of the base plate, a battery located between the four support rods is fixedly connected to the top of the base plate, and the PLC controller, dual-axis motor, water pump and solenoid valve are all electrically connected to the battery.

[0012] Preferably, threaded holes are provided on adjacent sides of the two movable seats, and the threaded holes are threadedly connected to corresponding screw rods.

[0013] Preferably, a stirring motor electrically connected to a battery is fixedly installed on the top of the liquid fertilizer box, the output shaft of the stirring motor extends into the liquid fertilizer box and is fixedly connected to a stirring rod, a plurality of stirring blades are fixedly connected to the outer side of the stirring rod, and a U-shaped handle is fixedly connected to the front side of the liquid fertilizer box.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. This fertilizer applicator can stir the liquid fertilizer in the liquid fertilizer box to prevent precipitation during fertilization by cooperating with the liquid fertilizer box, stirring motor, stirring rod and stirring blade;

[0016] 2. This fertilizer applicator can accurately and quantitatively fertilize multiple points on both sides through the cooperation of the PLC controller, water pump, water distribution box, two round tubes, two telescopic horizontal water conduction components and multiple quantitative fertilization components. The fertilization efficiency is effectively improved by the synchronous fertilization of multiple points on both sides. The quantitative fertilization method effectively avoids the phenomenon of excessive waste or insufficient fertilization at a single position, thereby improving the uniformity and accuracy of fertilization.

[0017] 3. This fertilizer applicator, through the cooperation of the telescopic transverse water guide component, the threaded transverse guide drive component and the dual-axis motor, can adjust the distance between the two circular tubes according to the positions of the fertilizer pits on both sides, so as to adjust the distance between the quantitative fertilization components on both sides, and achieve the effect of accurately adjusting the fertilization distance according to the positions of the fertilizer pits on both sides, thereby improving applicability and further improving the accuracy of fertilization.

[0018] The utility model is provided with a series of structures, which is convenient for accurate and quantitative fertilization at multiple points on both sides. The fertilization efficiency is effectively improved by the method of synchronous fertilization at multiple points on both sides. The quantitative fertilization method is utilized to effectively avoid the phenomenon of excessive waste or insufficient fertilization at a single position, improve the uniformity of fertilization and the accuracy of fertilization, and facilitate accurate adjustment of the fertilization spacing according to the positions of the fertilization pits on both sides, further improving the accuracy and applicability of fertilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a three-dimensional structural schematic diagram of a fertilizer applicator proposed by the utility model;

[0020] Figure 2 This is a schematic diagram of the main cross-sectional structure of a fertilizer applicator proposed by the utility model;

[0021] Figure 3 For the utility model Figure 2 A schematic diagram of the enlarged structure of part A in the figure.

[0022] In the figure: 1. bottom plate; 2. liquid fertilizer box; 201. stirring motor; 202. stirring rod; 3. water distribution box; 4. inner tube; 5. outer tube; 6. round tube; 7. liquid flow sensor; 8. solenoid valve; 9. fertilizer discharge hood; 10. PLC controller; 11. water pump; 12. L-shaped support plate; 13. screw; 14. moving seat; 15. U-shaped seat; 16. dual-axis motor. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] like Figures 1 to 3 As shown, a fertilizer applicator proposed in this embodiment includes a liquid fertilizer box 2, a bottom plate 1 is fixedly installed at the bottom of the liquid fertilizer box 2, and universal wheels are rotatably installed at the four corners of the bottom of the bottom plate 1, wherein a feeding pipe for feeding is connected and fixed on the right side of the top of the liquid fertilizer box 2, a water separation box 3 with an opening at the bottom is fixedly connected to the top of the liquid fertilizer box 2, a PLC controller 10 and a water pump 11 electrically connected thereto are fixedly installed on the top of the liquid fertilizer box 2, a water inlet of the water pump 11 extends into the liquid fertilizer box 2 and is connected and fixed with a water suction pipe, a filter cover is connected and fixed at the bottom of the water suction pipe, and a water outlet of the water pump 11 extends into the water separation box 3, and the liquid fertilizer in the liquid fertilizer box 2 is extracted when the water pump 11 is controlled by the PLC controller 10 and turned on, and pumped into the water separation box 3;

[0025] Both sides of the water-dividing box 3 are connected and fixed with telescopic transverse water-conducting components, and the repelling ends of the two telescopic transverse water-conducting components are connected and fixed with a circular tube 6 with a blocking structure at the front and rear ends. The bottom of the circular tube 6 is evenly connected and fixed with a plurality of quantitative fertilization components electrically connected to the PLC controller 10. The telescopic transverse water-conducting components are used to transversely guide the corresponding circular tube 6 and to pass the liquid fertilizer in the water-dividing box 3 into the circular tube 6. The quantitative fertilization components are used to detect the amount of fertilizer and automatically close to perform quantitative fertilization when the preset amount is reached; the top of the water-dividing box 3 is fixedly connected with a U-shaped seat 15, and the U-shaped seat 1 Threaded cross-guide drive assemblies are installed between both sides of 5 and the top of the liquid fertilizer box 2, and the threaded cross-guide drive assemblies are fixedly connected to the top of the corresponding telescopic cross-guide water-conducting assembly. A dual-axis motor 16 located in the U-shaped seat 15 is fixedly installed on the top of the water-dividing box 3. The close ends of the two threaded cross-guide drive assemblies are respectively fixedly connected to the repelling ends of the two output shafts of the dual-axis motor 16. The two threaded cross-guide drive assemblies are used to drive the two round tubes 6 to repel or move close to each other through the two telescopic cross-guide water-conducting assemblies when the dual-axis motor 16 is started, so as to realize accurate adjustment of the fertilization spacing according to the fertilization pits on both sides.

[0026] Specifically, the telescopic transverse water-conducting assembly includes an inner tube 4, and the adjacent ends of the two inner tubes 4 are respectively connected and fixed to the two sides of the water-dividing box 3. The inner tube 4 is provided with an outer tube 5 as a sealing sliding sleeve, wherein the outer adhesive sleeve of the inner tube 4 is provided with a sealing rubber sleeve that is slidably connected to the corresponding inner wall of the outer tube 5, which plays the effect of sliding sealing between the outer side of the inner tube 4 and the corresponding inner wall of the outer tube 5. The repelling ends of the two outer tubes 5 are respectively connected and fixed to the adjacent sides of the two circular tubes 6; the inner tube 4 and the outer tube 5 are arranged to cooperate with each other, and the outer tube 5 is used to slide horizontally on the corresponding inner tube 4 to realize horizontal guidance of the circular tube 6, and the inner tube 4 and the corresponding outer tube 5 are combined to realize the passage of liquid fertilizer in the water-dividing box 3 into the circular tube 6.

[0027] Furthermore, the quantitative fertilization component includes a liquid flow sensor 7 connected and fixed at the bottom of the corresponding circular tube 6, the bottom of the liquid flow sensor 7 is connected and fixed with a solenoid valve 8, the bottom of the solenoid valve 8 is connected and fixed with a fertilizer discharge cover 9, the solenoid valve 8 and the liquid flow sensor 7 are both electrically connected to the PLC controller 10, four support rods are fixedly connected in a rectangular shape between the bottom of the liquid fertilizer box 2 and the top of the base plate 1, the top of the base plate 1 is fixedly connected with a battery located between the four support rods, the PLC controller 10, the dual-axis motor 16, the water pump 11 and the solenoid valve 8 are all electrically connected to the battery, which serves as a controller for the PLC controller 10 and the dual-axis motor. The machine 16, the water pump 11 and the electromagnetic valve 8 power supply effect; the liquid flow sensor 7, the electromagnetic valve 8 and the fertilizer discharge cover 9 are set to cooperate to realize the liquid fertilizer in the corresponding circular tube 6 to pass downward for fertilization. The liquid flow sensor 7 is used to detect the amount of liquid fertilizer passing through and transmit the flow value to the PLC controller 10. When the amount of fertilizer applied here reaches the preset amount, the PLC controller 10 controls the corresponding electromagnetic valve 8 to close and stops the liquid fertilizer from continuing to pass out here. When the flow values ​​detected by all liquid flow sensors 7 reach the preset value, the PLC controller 10 further controls the water pump 11 to close, so as to realize multi-position automatic quantitative fertilization.

[0028] Furthermore, the threaded transverse guide drive assembly includes an L-shaped support plate 12 fixedly connected to the top of the liquid fertilizer tank 2, and the two L-shaped support plates 12 are symmetrically arranged. The L-shaped support plates 12 are slidably sleeved on the corresponding outer tube 5, wherein the side wall of the L-shaped support plate 12 is provided with a transverse guide hole that is slidably sleeved with the outer side of the corresponding outer tube 5, which plays the effect of guiding the transverse sliding of the outer tube 5. The adjacent sides of the two L-shaped support plates 12 are respectively fixedly connected to the two sides of the U-shaped seat 15, and the inner walls of the repelling sides of the two L-shaped support plates 12 are respectively connected to the U-shaped seat A screw 13 is rotatably installed between the two sides of 15, wherein both sides of the U-shaped seat 15 are provided with round through holes, and bearings are fixedly installed in the round through holes and on the side walls of the L-shaped support plate 12, and the inner ring of the bearing is fixedly sleeved with the outer side of the corresponding screw 13, which plays the effect of supporting the rotation installation of the screw 13, and the adjacent ends of the two screws 13 are respectively fixedly connected with the repelling ends of the two output shafts of the dual-axis motor 16, and the thread rotation directions of the two screws 13 are opposite, and a movable seat 14 is threadedly sleeved on the screw 13, wherein the two movable seats 14 are provided on the screw 13. The movable seat 14 is provided with a threaded hole on one side thereof, and the threaded hole is threadedly connected with the corresponding screw rod 13. The threaded connection relationship between the screw rod 13 and the threaded hole is utilized, and the two screw rods 13 are used in combination with the opposite rotation direction of the threads, so that the two movable seats 14 are driven to repel or move toward each other when the two screw rods 13 rotate. The movable seat 14 is slidably sleeved on the corresponding L-shaped support plate 12, wherein one side of the movable seat 14 is provided with a rectangular guide hole which is slidably sleeved with the outer side of the corresponding L-shaped support plate 12, so as to guide the lateral sliding of the movable seat 14. The bottom of the movable seat 14 is fixedly connected with the top of the corresponding outer tube 5. The L-shaped support plate 12, the screw rod 13 and the movable seat 14 are provided to cooperate with each other, and the dual-axis motor 16 is used to drive the two screw rods 13 to rotate synchronously. The rotation of the two screw rods 13 drives the two movable seats 14 to repel or move toward each other. The two movable seats 14 drive the two circular tubes 6 to repel or move toward each other through the two outer tubes 5, and change the spacing between the two circular tubes 6, so as to achieve the effect of accurately adjusting the fertilization spacing according to the fertilization pits on both sides.

[0029] Furthermore, a stirring motor 201 electrically connected to a battery is fixedly installed on the top of the liquid fertilizer tank 2, the output shaft of the stirring motor 201 extends into the liquid fertilizer tank 2 and is fixedly connected to a stirring rod 202, a plurality of stirring blades are fixedly connected to the outer side of the stirring rod 202, and a U-shaped handle is fixedly connected to the front side of the liquid fertilizer tank 2. The stirring motor 201 is used to drive the stirring rod 202 and the stirring blades to rotate, thereby stirring the liquid fertilizer in the liquid fertilizer tank 2 and preventing sedimentation.

[0030] The method of using this embodiment is as follows: liquid fertilizer is added into the liquid fertilizer tank 2 through the feeding pipe in advance, the stirring motor 201 is turned on to drive the stirring rod 202 and the stirring blade to rotate, the stirring blade stirs the liquid fertilizer in the liquid fertilizer tank 2 to prevent precipitation, and the device can be moved by manually pushing it;

[0031] When fertilizing, the flow value for closing the corresponding electromagnetic valve 8 is preset by using the PLC controller 10 according to the fertilizer amount demand of each point, and according to the number of multiple liquid flow sensors 7, the water pump 11 is controlled to be closed when the flow values ​​received by this number meet the requirements, and the water pump 11 is turned on to extract the liquid fertilizer in the liquid fertilizer box 2 through the suction pipe and pump it into the water diversion box 3. The liquid fertilizer is divided into two circular tubes 6 through two inner tubes 4 and two outer tubes 5 in turn, and then discharged downward through multiple liquid flow sensors 7, multiple electromagnetic valves 8 and multiple fertilizer discharge covers 9 to the fertilization position for fertilization. The liquid flow sensor 7 detects the amount of liquid fertilizer passing through and transmits it to the PLC control When the amount of fertilizer applied here reaches the preset amount, the PLC controller 10 controls the corresponding solenoid valve 8 to close, and stops the liquid fertilizer from continuing to flow out here. When the flow values ​​detected by all liquid flow sensors 7 reach the preset value, the PLC controller 10 further controls the water pump 11 to close. By fertilizing at multiple points on both sides simultaneously, and using the method of detecting the amount of fertilizer applied at multiple points and automatically closing when the amount of fertilizer applied is reached, it is convenient to fertilize at multiple points on both sides accurately and quantitatively. By fertilizing at multiple points on both sides simultaneously, the fertilization efficiency is effectively improved, and the quantitative fertilization method is used to effectively avoid the phenomenon of excessive waste or insufficient fertilizer application at a single location, thereby improving the uniformity of fertilization and the accuracy of fertilization.

[0032] In addition, if the distance between the fertilization positions on both sides is large, so that the liquid fertilizer discharge position on both sides cannot be above the position to be fertilized, the personnel can start the dual-axis motor 16 in the forward direction to drive the two screws 13 to rotate. The rotation of the two screws 13 drives the two moving seats 14 to slide against each other on the two L-shaped support plates 12, and the two moving seats 14 drive the two outer tubes 5 to slide against each other on the two inner tubes 4, and the two outer tubes 5 drive the two circular tubes 6 to move against each other, and the two circular tubes 6 drive the quantitative fertilization components on both sides to move against each other, so as to change the fertilization distance between the two sides, so as to facilitate the precise adjustment of the fertilization distance according to the position of the fertilization pits on both sides, and further improve the fertilization accuracy; after the fertilization is completed, the personnel pushes the device to move backward to the unfertilized position, and then uses the PLC controller 10 to control the water pump 11 and multiple solenoid valves 8 to open, so as to continue the quantitative and precise fertilization work at multiple points on both sides.

[0033] Among them, the PLC controller 10, the liquid flow sensor 7, the solenoid valve 8 and the water pump 11 in the utility model are well known to those skilled in the art, and belong to conventional means or common knowledge. Those skilled in the art can make any optional selections according to their needs or convenience. In addition, the PLC controller 10 receives the flow value transmitted by the liquid flow sensor 7 to control the solenoid valve 8 and the water pump 11 to close. The basic numerical control parameter control methods well known to those skilled in the art are all conventional means or common knowledge, and will not be repeated here.

[0034] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein with equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A fertilizer applicator, comprising a liquid fertilizer tank (2), characterized in that: A bottom plate (1) is fixedly mounted on the bottom of the liquid fertilizer box (2), and universal wheels are rotatably mounted on the four corners of the bottom of the bottom plate (1). A water separation box (3) with an opening at the bottom is fixedly connected to the top of the liquid fertilizer box (2). A PLC controller (10) and a water pump (11) electrically connected thereto are fixedly mounted on the top of the liquid fertilizer box (2). The water inlet of the water pump (11) extends into the liquid fertilizer box (2) and is connected and fixedly connected to a water suction pipe. The bottom end of the water suction pipe is connected and fixedly connected to a filter screen cover. The water outlet of the water pump (11) extends into the water separation box (3). Both sides of the water distribution box (3) are connected and fixed with telescopic transverse water conducting components, and the repelling ends of the two telescopic transverse water conducting components are connected and fixed with a circular tube (6) with a blocking structure at the front and rear ends, and a plurality of quantitative fertilization components electrically connected to a PLC controller (10) are connected and fixed at equal intervals at the bottom of the circular tube (6); The top of the water diversion box (3) is fixedly connected to a U-shaped seat (15), and threaded transverse guide drive assemblies are installed between both sides of the U-shaped seat (15) and the top of the liquid fertilizer box (2), and the threaded transverse guide drive assemblies are fixedly connected to the top of the corresponding telescopic transverse guide water-conducting assembly. A dual-axis motor (16) located in the U-shaped seat (15) is fixedly installed on the top of the water diversion box (3), and the adjacent ends of the two threaded transverse guide drive assemblies are respectively fixedly connected to the repelling ends of the two output shafts of the dual-axis motor (16).

2. A fertilizer applicator according to claim 1, characterized in that: The telescopic transverse water conducting assembly comprises an inner tube (4), the adjacent ends of the two inner tubes (4) are respectively connected and fixed to the two sides of the water distribution box (3), an outer tube (5) is provided on the sealing sliding sleeve of the inner tube (4), and the repelling ends of the two outer tubes (5) are respectively connected and fixed to the adjacent sides of the two circular tubes (6).

3. A fertilizer applicator according to claim 2, characterized in that: The quantitative fertilization component comprises a liquid flow sensor (7) connected and fixed at the bottom of the corresponding circular tube (6); the bottom of the liquid flow sensor (7) is connected and fixed with a solenoid valve (8); the bottom of the solenoid valve (8) is connected and fixed with a fertilizer discharge cover (9); the solenoid valve (8) and the liquid flow sensor (7) are both electrically connected to a PLC controller (10).

4. A fertilizer applicator according to claim 3, characterized in that: The threaded transverse guide drive assembly comprises an L-shaped support plate (12) fixedly connected to the top of the liquid fertilizer box (2), the two L-shaped support plates (12) are symmetrically arranged, the L-shaped support plates (12) are slidably sleeved on the corresponding outer tube (5), the adjacent sides of the two L-shaped support plates (12) are respectively fixedly connected to the two sides of the U-shaped seat (15), the inner walls of the repelling sides of the two L-shaped support plates (12) are rotatably mounted between the two sides of the U-shaped seat (15), the adjacent ends of the two screw rods (13) are respectively fixedly connected to the repelling ends of the two output shafts of the double-axis motor (16), the thread rotation directions of the two screw rods (13) are opposite, and a movable seat (14) is threadedly sleeved on the screw rod (13), the movable seat (14) is slidably sleeved on the corresponding L-shaped support plate (12), and the bottom of the movable seat (14) is fixedly connected to the top of the corresponding outer tube (5).

5. A fertilizer applicator according to claim 1, characterized in that: Four support rods are fixedly connected in a rectangular shape between the bottom of the liquid fertilizer box (2) and the top of the base plate (1); a storage battery located between the four support rods is fixedly connected to the top of the base plate (1); and the PLC controller (10), the dual-axis motor (16), the water pump (11) and the solenoid valve (8) are all electrically connected to the storage battery.

6. A fertilizer applicator according to claim 4, characterized in that: A threaded hole is provided on one side of the two movable seats (14) that are close to each other, and the threaded hole is threadedly connected to the corresponding screw rod (13).

7. A fertilizer applicator according to claim 5, characterized in that: A stirring motor (201) electrically connected to a storage battery is fixedly mounted on the top of the liquid fertilizer box (2); an output shaft of the stirring motor (201) extends into the liquid fertilizer box (2) and is fixedly connected to a stirring rod (202); a plurality of stirring blades are fixedly connected to the outer side of the stirring rod (202); and a U-shaped handle is fixedly connected to the front side of the liquid fertilizer box (2).

Images