Pneumatic machine-pesticide synergistic weeding machine for paddy field

Abstract

The paddy field weeding machine with pneumatic machine-pesticide synergistic effect belongs to agricultural machinery; a liquid medicine tank, a high-pressure gas tank, a pneumatic electromagnetic valve and an automatic control box assembly are respectively fixed on a walking frame, a gas pump and a weed identification sensor are respectively fixed on the upper end of the liquid medicine tank and the pneumatic electromagnetic valve, a pressure sensor is installed outside the high-pressure gas tank, the two ends of a gas conveying pipe A are respectively connected with the gas outlet of the gas pump and the gas inlet of the high-pressure gas tank, the gas outlet of the high-pressure gas tank is connected with a filter through a gas conveying pipe B and is communicated with the gas inlet of the pneumatic electromagnetic valve, a liquid medicine check valve is fixed on the bottom wall of the liquid medicine tank, a liquid medicine conveying hose is connected with the liquid medicine check valve and a rigid pipe, a pneumatic weeding unit is installed on the rear end of the walking frame; the machine combines mechanical weeding and pesticide weeding, adopts pneumatic driving and intelligent monitoring mode for combined operation, has the characteristics of unique and reasonable structure, high weeding efficiency and weed mortality, less pesticide residue, light environmental pollution, no damage to seedling plants and root system.

Description

Technical Field

[0001] This invention belongs to agricultural machinery, and mainly relates to a machine suitable for weeding and cultivating in paddy fields. Background Technology

[0002] Mechanical weeding, as a representative of physical weeding, has become one of the main methods of weeding in paddy fields due to its lack of environmental pollution, environmental friendliness, and safety. However, due to shortcomings in structural design, most mechanical paddy field weeding machines can only pick weeds out of the paddy field soil, causing them to float on the water surface or be pressed into the soil to die. However, some weeds in paddy fields have strong vitality, and the above methods cannot guarantee the purpose and effect of weeding, resulting in inconsistent weeding quality. At the same time, the operation can easily damage rice seedlings and roots. On the other hand, chemical herbicides are widely used in paddy field weeding because of their high weeding efficiency, ease of use, and minimal damage to rice seedlings and roots. However, traditional large-scale spraying of herbicides causes serious environmental pollution. Therefore, it is necessary to develop a weeding machine that combines the advantages of both mechanical and chemical weeding to improve the low weeding rate of mechanical weeding and the environmental pollution caused by chemical weeding, thus supporting the production of green and organic rice. Summary of the Invention

[0003] The purpose of this invention is to address the problems existing in the prior art and, in combination with the actual needs of current paddy field weeding operations, to develop and design a pneumatic machine that combines mechanical and pesticide action for paddy field weeding, so as to achieve the goals of high-quality weeding, high weed mortality, low environmental pollution, low pesticide residues in crops, and no damage to rice seedlings and roots.

[0004] The purpose of this invention is achieved as follows: A liquid medicine tank, a high-pressure gas cylinder, a pneumatic solenoid valve, and an automatic control box assembly are fixedly mounted on the upper part of the walking vehicle frame. An air pump and a weed detection sensor are fixedly mounted on the upper ends of the liquid medicine tank and the pneumatic solenoid valve, respectively. A pressure sensor is installed on the outside of the high-pressure gas cylinder, interconnected with it. Both ends of the air supply pipe A are sealed and connected to the air outlet of the air pump and the air inlet of the high-pressure gas cylinder, respectively. The air outlet of the high-pressure gas cylinder is connected to a filter via air supply pipe B and is connected to the air inlet of the pneumatic solenoid valve. A one-way valve for the liquid medicine is fixedly mounted on the bottom wall of the liquid medicine tank. The walking vehicle... A pneumatic weeding unit (13) is installed on the rear end of the frame (1). The structure of the pneumatic weeding unit (13) is as follows: a base plate and a transverse track are fixedly mounted perpendicularly to each other on the lower end of the unit frame; a rack is fixedly mounted on the base plate; a Π-shaped frame is installed on the unit frame, located above the transverse track, and can be moved laterally; a slider is fixedly mounted on the inner wall of the rear side wall of the Π-shaped frame, and the slider is engaged with the transverse track in a transversely movable snap-fit ​​configuration; a micro lead screw linear module is fixedly mounted on the outer wall of the front side wall of the Π-shaped frame; a motor and a cylindrical gear are fixedly mounted on the outer wall of the rear side wall of the Π-shaped frame. The cylindrical gear meshes with the rack and pinion, and is fixedly mounted on the motor shaft. A rigid tube is vertically fixed to the micro lead screw linear module via a tube clamp. The upper and lower ends of the flexible hose are respectively sealed and fixed to the air outlet of the pneumatic solenoid valve and the upper end of the rigid tube. A sleeve is coaxially fixed to the lower end of the rigid tube, and a fixed blade is fixed to the outside of the sleeve. A cylindrical shaft is radially and axially positioned and rotatably mounted in the coaxial inner cavity of the rigid tube and the sleeve. The lower end of the cylindrical shaft is located outside the lower end of the sleeve. A barrel-shaped nozzle is fixed to the lower end of the cylindrical shaft. The device consists of a moving blade and a spiral blade, which are fixedly mounted from top to bottom. The moving blade is located below the fixed blade and they are in a shearing fit with each other. A tangential through hole is opened on the bottom side wall of the barrel-shaped nozzle along the tangential direction, and the tangential through hole is inclined upward from the inside to the outside. The two ends of the liquid delivery hose are fixedly connected to the liquid one-way valve and the rigid pipe, respectively, connecting the liquid tank and the rigid pipe. The wires connect the automatic control box assembly to the air pump, air pressure sensor, pneumatic solenoid valve, motor, micro lead screw linear module and weed recognition sensor, thus forming a pneumatic machine-pesticide synergistic weeding machine for paddy fields.

[0005] This invention combines mechanical weeding techniques used in paddy field cultivation with chemical weeding techniques using herbicides into a single machine. It employs a weed detection sensor to accurately detect weed locations and remove them at specific points. A pneumatic principle drives the rotating blades, which, in conjunction with the stationary blades, cut and pulverize the weeds. Combined with an airflow-delivered herbicide spraying mechanism, it achieves chemical weed control. This intelligent combination of shearing and pulverizing mechanical weeding and airflow-delivered chemical weeding results in a novel, unique, and rational structure with high weeding efficiency and mortality, herbicide conservation, efficient herbicide utilization, low herbicide residue in crops, minimal environmental pollution, and no damage to seedlings or root systems. Attached Figure Description

[0006] Figure 1 This is a schematic diagram of the overall structure of a pneumatic, mechanical, and pesticide-assisted weeding machine for paddy fields.

[0007] Figure 2 yes Figure 1 The right-hand view;

[0008] Figure 3 yes Figure 1 A magnified view of a portion of the image;

[0009] Figure 4 yes Figure 2 A magnified view of a portion of the image;

[0010] Figure 5 yes Figure 3 Enlarged view of part A;

[0011] Figure 6 yes Figure 5 Sectional view along line B-B;

[0012] Figure 7 This is an enlarged schematic diagram of the assembly structure of the base plate, transverse track, Π-shaped frame, motor, cylindrical gear, transverse slider, and rack;

[0013] Figure 8 This is a three-dimensional schematic diagram of the overall structure of a pneumatic, mechanical, and pesticide-assisted weeding and tilling machine for paddy fields.

[0014] Part number description in the image:

[0015] 1. Walking frame; 2. Chemical solution tank; 3. Air pump; 4. Air pressure sensor; 5. High-pressure air tank; 6. Air supply pipe A; 7. Filter; 8. Weed detection sensor; 9. Air supply pipe B; 10. Pneumatic solenoid valve; 11. Chemical solution check valve; 12. Automatic control box assembly; 13. Pneumatic weeding unit; 13-1. Unit frame; 13-2. Π-shaped frame; 13-3. Transverse track; 13-4. Motor; 13-5. Slider; 13 -6. Cylindrical gear; 13-7. Rack; 13-8. Seat plate; 13-9. Liquid delivery hose; 13-10. Fixed pipe clamp; 13-11. Miniature lead screw linear model; 13-12. Flexible hose; 13-13. Rigid pipe; 13-14. Cylindrical shaft; 13-15. Sleeve; 13-16. Fixed blade; 13-17. Moving blade; 13-18. Barrel nozzle; 13-19. Tangential through hole; 13-20. Helical blade. Detailed Implementation

[0016] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. A pneumatic machine-pesticide synergistic weeding machine for paddy fields includes a weed identification sensor (8) and a miniature lead screw linear module (13-11). Its features include: a pesticide tank (2), a high-pressure air tank (5), a pneumatic solenoid valve (10), and an automatic control box assembly (12) fixedly mounted on the upper part of the walking frame (1); an air pump (3) and a weed identification sensor (8) fixedly mounted on the upper ends of the pesticide tank (2) and the pneumatic solenoid valve (10); and a pressure sensor (4) interconnected with the outside of the high-pressure air tank (5) for air supply. The two ends of pipe A (6) are respectively sealed and connected to the air outlet of air pump (3) and the air inlet of high-pressure air tank (5). The air outlet of the high-pressure air tank (5) is connected to filter (7) through air supply pipe B (9) and connected to the air inlet of pneumatic solenoid valve (10). A one-way valve (11) for pesticide solution is fixed on the bottom wall of the pesticide tank (2). A pneumatic weeding unit (13) is installed on the rear end of the walking frame (1). The structure of the pneumatic weeding unit (13) is as follows: a base plate is fixed on the lower end of the unit frame (13-1) in a mutually perpendicular manner. 13-8) and the transverse track (13-3), the rack (13-7) is fixed on the seat plate (13-8), the Π-shaped frame (13-2) is installed on the single frame (13-1) above the transverse track (13-3) with a laterally movable buckle, the slider (13-5) is fixed on the inner wall of the rear side wall of the Π-shaped frame (13-2), the slider (13-5) and the transverse track (13-3) are in a laterally movable snap-fit ​​engagement, the miniature lead screw linear module (13-11) is fixed on the outer side wall of the front side wall of the Π-shaped frame (13-2). On the wall surface, a motor (13-4) is fixedly mounted on the outer wall of the rear side of the Π-shaped frame (13-2). A cylindrical gear (13-6) is fixedly mounted on the motor shaft of the motor (13-4). The cylindrical gear (13-6) meshes with a rack (13-7). A rigid tube (13-13) is vertically fixed on the micro screw linear module (13-11) through a tube clamp (13-10). The upper and lower ends of the elastic hose (13-12) are respectively sealed and fixed to the air outlet of the pneumatic solenoid valve (10) and the upper end of the rigid tube (13-13).A fixed sleeve (13-15) is coaxially mounted on the lower end of the rigid tube (13-13). A fixed blade (13-16) is fixedly mounted on the outside of the sleeve (13-15). A cylindrical shaft (13-14) is radially and axially positioned and rotatably mounted in the inner cavity coaxial with the rigid tube (13-13) and the sleeve (13-15). The lower end of the cylindrical shaft (13-14) is located outside the lower end of the sleeve (13-15). A barrel-type nozzle (13-18) is fixedly mounted on the lower end of the cylindrical shaft (13-14). A moving blade (13-17) and a spiral blade (13-20) are fixedly mounted sequentially from top to bottom on the outer wall of the barrel-type nozzle (13-18). 17) Located below the fixed blade (13-16) and in a shearing fit with each other, a tangential through hole (13-19) is opened on the bottom side wall of the barrel nozzle (13-18) along the tangential direction, and the tangential through hole (13-19) is inclined upward from the inside to the outside; the two ends of the liquid delivery hose (13-9) are respectively fixed to the liquid one-way valve (11) and the rigid pipe (13-13), connecting the liquid tank (2) and the rigid pipe (13-13); the wire connects the automatic control box assembly (12) to the air pump (3), the air pressure sensor (4), the pneumatic solenoid valve (10), the motor (13-4), the micro lead screw linear module (13-11), and the weed identification sensor (8).

[0017] During operation, the entire machine is pulled and positioned at the rear of the traction power machinery, moving forward randomly. The barrel-type nozzle 13-18 is placed above the rows of rice seedlings in the paddy field. The automatic control box assembly 12 starts the air pump 3, air pressure sensor 4, pneumatic solenoid valve 10, miniature lead screw linear module 13-11, motor 13-4, and weed detection sensor 8 to enter the working state. According to the needs of inter-row weeding operations, the miniature lead screw linear module 13-11, through the fixed pipe clamp 13-10 and rigid pipe 13-13, causes the barrel-type nozzle 13-18 to extend downward and insert into the paddy field soil layer. At this time, the high-pressure gas produced by the air pump 3 passes through the air delivery pipe A6, high-pressure gas tank 5, air delivery pipe B9, filter 7, and pneumatic solenoid valve 1 in sequence. 0. The flexible hose 13-12, rigid tube 13-13, and cylindrical shaft 13-14 enter the barrel cavity of the barrel nozzle 13-18 and spray out from the tangential through hole 13-19. Under the reaction force of the sprayed pressure airflow, the barrel nozzle 13-18 drives the moving blade 13-17 to rotate in a circle. During the forward movement of the single unit, it completes the cutting and crushing operation of paddy field weeds with the shearing cooperation of the fixed blade 13-16. At the same time, the spiral blade 13-20 digs the weeds out of the paddy field mud layer and outputs them upward, so that the weed roots are separated from the soil. Based on the upwardly inclined tangential through hole 13-19, the sprayed airflow is directed upward, which in turn blows the crushed weeds onto the surface of the paddy field soil and water layer, which greatly improves the weed mortality rate. Meanwhile, the flow of pressurized gas within the rigid pipe 13-13 creates a negative pressure within the cavity of the liquid delivery hose 13-9. Under the suction of this negative pressure, the liquid one-way valve 11 opens, allowing the liquid herbicide in the liquid tank 2 to enter the rigid pipe 13-13 through the liquid delivery hose 13-9 and mix with the pressurized gas flow. Under the action of the pressurized gas flow, the herbicide is sprayed from bottom to top into the paddy field soil through the cylindrical shaft 13-14, the barrel nozzle 13-18, and the tangential through-hole 13-19, thus carrying out herbicide weeding operations. During the weeding and tilling operation as the machine moves forward, the weed identification sensor 8 identifies the weeds and inputs their location to the automatic control box assembly 12. The automatic control box assembly 12 then activates the control motor 13-4, which, through rotating cylindrical gears 13-6, racks 13-7, Π-shaped frames 13-2, micro lead screw linear modules 13-11, fixed pipe clamps 13-10, rigid pipes 13-13, and cylindrical shafts 13-14, drives the barrel-type nozzles 13-18, moving blades 13-17, and fixed blades 13-16 to move laterally left or right on the individual frame 13-1 to the weed location, completing the intelligent positioning and weeding operation. The air pressure sensor 4 monitors the gas pressure inside the high-pressure gas tank 5 and automatically adjusts the operation of the air pump 3 via the automatic control box assembly 12. The pneumatic solenoid valve 10 automatically controls whether the high-pressure airflow enters the flexible hose 13-12 via the automatic control assembly 12.

Claims

1. A pneumatic, combined mechanical and pesticide-based weeding machine for paddy fields, comprising a weed identification sensor (8) and a miniature lead screw linear module (13-11), characterized in that: A liquid medicine tank (2), a high-pressure gas cylinder (5), a pneumatic solenoid valve (10), and an automatic control box assembly (12) are fixedly mounted on the upper part of the walking frame (1). An air pump (3) and a weed identification sensor (8) are fixedly mounted on the upper ends of the liquid medicine tank (2) and the pneumatic solenoid valve (10). A pressure sensor (4) is connected to the outside of the high-pressure gas cylinder (5). The two ends of the air supply pipe A (6) are sealed and connected to the air outlet of the air pump (3) and the air inlet of the high-pressure gas cylinder (5), respectively. The air outlet of the high-pressure gas cylinder (5) is connected to the filter (7) through the air supply pipe B (9) and is connected to the air inlet of the pneumatic solenoid valve (10). A one-way valve (11) for liquid medicine is fixedly mounted on the bottom wall of the liquid medicine tank (2). A one-way valve for liquid medicine is fixedly mounted on the rear end of the walking frame (1). Install a pneumatic weeding unit (13). The structure of the pneumatic weeding unit (13) is as follows: a base plate (13-8) and a transverse track (13-3) are fixedly mounted perpendicularly to each other on the lower end of the unit frame (13-1). A rack (13-7) is fixedly mounted on the base plate (13-8). A Π-shaped frame (13-2) is installed on the unit frame (13-1) above the transverse track (13-3) and can be moved laterally. A slider (13-5) is fixedly mounted on the inner wall of the rear side wall of the Π-shaped frame (13-2). The slider (13-5) and the transverse track (13-3) are engaged laterally. The micro screw linear module (13-11) is fixedly mounted on the outer wall of the front side wall of the Π-shaped frame (13-2). A motor (13-4) is fixedly mounted on the outer wall of the rear side of the frame (13-2). A cylindrical gear (13-6) is fixedly mounted on the motor shaft of the motor (13-4). The cylindrical gear (13-6) meshes with a rack (13-7). A rigid tube (13-13) is vertically fixed on the micro lead screw linear module (13-11) through a tube clamp (13-10). The upper and lower ends of the elastic hose (13-12) are respectively sealed and fixed to the air outlet of the pneumatic solenoid valve (10) and the upper end of the rigid tube (13-13). A sleeve (13-15) is coaxially fixed on the lower end of the rigid tube (13-13). A fixed blade (13-16) is fixed on the outside of the sleeve (13-15). -15) A cylindrical shaft (13-14) is radially and axially positioned and rotatably mounted in the coaxial inner cavity. The lower end of the cylindrical shaft (13-14) is located outside the lower end of the sleeve (13-15). A barrel-shaped nozzle (13-18) is fixed on the lower end of the cylindrical shaft (13-14). A moving blade (13-17) and a spiral blade (13-20) are fixed on the outer wall of the barrel-shaped nozzle (13-18) from top to bottom. The moving blade (13-17) is located below the fixed blade (13-16) and they are in shear fit with each other. A tangential through hole (13-19) is opened on the bottom side wall of the barrel-shaped nozzle (13-18) along the tangential direction. The tangential through hole (13-19) is inclined upward from the inside to the outside.The two ends of the liquid delivery hose (13-9) are fixed to the liquid one-way valve (11) and the rigid pipe (13-13) respectively, connecting the liquid tank (2) and the rigid pipe (13-13); the wires connect the automatic control box assembly (12) to the air pump (3), the air pressure sensor (4), the pneumatic solenoid valve (10), the motor (13-4), the miniature lead screw linear module (13-11), and the weed identification sensor (8).

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