Liquid pesticide discharge mechanism

Abstract

The liquid pesticide discharge mechanism belongs to agricultural machinery; the mechanism comprises a power driving and quantitative adjusting system composed of a motor, a motor shaft, a crank, an adjusting block and a driving rod, a quantitative liquid feeding and discharging system composed of a liquid storage cylinder, a liquid feeding check valve and a piston rod, and a liquid pesticide discharge opening and closing system composed of a transmission box, a driving plate, a rack, a gear shaft, an arc-shaped belt slot connecting rod, a connecting rod, a push-pull plate, a push-pull rod, a cross slot plate, a hanging seat, a liquid discharging cylinder, a rotating shaft, a sleeve, a semi-circular opening and closing left and right leaf plate; the mechanism has a unique, reasonable and compact structure, high precision in discharge amount control, simple and convenient operation, wide application range, strong adaptability and good versatility.

Description

Technical Field

[0001] This invention belongs to the field of agricultural machinery, and mainly relates to a liquid pesticide application mechanism with precise quantitative adjustment for plant protection machinery. Background Technology

[0002] Liquid pesticides are increasingly used in agricultural plant protection operations due to their easy dilution and ability to effectively cover and absorb plant surfaces during spraying. Currently used liquid pesticide spraying equipment often employs a liquid pump to pressurize the liquid pesticide and deliver it directly to the nozzle through a delivery pipe. This type of equipment lacks the function of precisely adjusting the sprayed liquid volume. This can lead to problems such as waste due to excessive application, increased application costs, and environmental pollution, or insufficient application affecting efficacy and reducing crop yield and quality. Therefore, achieving precise adjustment and control of liquid pesticide application is a crucial technical problem that must be solved. Summary of the Invention

[0003] The purpose of this invention is to address the problems existing in the prior art and, in light of the actual needs of current precision application of liquid pesticides, to develop and design a liquid pesticide application mechanism that achieves precise application of liquid pesticides, scientific and reasonable use, and simple and convenient adjustment and operation.

[0004] The objective of this invention is achieved as follows: a piston rod is axially reciprocatingly inserted into the cavity of a fixedly configured liquid storage cylinder; a one-way inlet valve is installed above the liquid storage cavity of the liquid storage cylinder, communicating with it; a drive plate is axially reciprocatingly inserted into a strip-shaped through hole on the lower wall of the liquid storage cylinder; the upper end of the drive plate is fixedly attached to the piston rod; a transmission housing is suspended and fixedly installed on the outside of the lower wall of the liquid storage cylinder, located to the side of the drive plate; and a push-pull mechanism is laterally reciprocatingly inserted into the top wall of the transmission housing. A gear shaft is rotatably mounted on the vertical side wall of the transmission housing. A cylindrical pin is fixed to the gear side wall of the gear shaft. A rack is laterally reciprocatingly mounted inside the transmission housing cavity, below the gear shaft. The outer end of the rack is connected to the drive plate. The rack meshes with the gear shaft. A cylindrical pin is slidably inserted into the arc-shaped slot of an arc-shaped grooved connecting rod. The lower end of the arc-shaped grooved connecting rod is hinged to the inner wall of the vertical side wall of the transmission housing. The left and right ends of the connecting rod are respectively connected to pins B and A. The upper end of the arc-shaped grooved connecting rod is hinged to the lower side of the push-pull plate; a drainage cylinder is fixedly mounted coaxially on the drainage end of the storage cylinder; a hanger is fixedly mounted on the lower side of the drainage cylinder; a cross groove plate is installed on the lower end of the hanger that can move laterally back and forth; a rotating shaft is rotatably inserted into the shaft holes of the drainage cylinder, the hanger, and the cross groove plate from top to bottom; a sleeve is rotatably fitted on the outside of the rotating shaft; and semi-circular opening and closing right leaf plates and [other components] are symmetrically fixed on the sleeve and the rotating shaft, located inside the cavity of the drainage cylinder. A semi-circular opening and closing left leaf plate, and a semi-circular opening and closing right leaf plate cooperate with the semi-circular opening and closing left leaf plate to close or open the drainage cylinder. The bottom ends of the rotating shaft and the sleeve are respectively inserted into the left and right slots of the cross groove plate. The cross groove plate is connected to the push-pull rod. A motor is fixedly arranged on the outer side of the piston rod. A crank is fixedly mounted on the motor shaft. An adjusting block is fixedly mounted on the crank and can be adjusted radially. The two ends of the drive rod are respectively hinged to the adjusting block and the piston rod. This constitutes the liquid pesticide application mechanism.

[0005] This invention utilizes the reciprocating motion of a piston rod within a storage cylinder to achieve quantitative intake and discharge of liquid pesticides. By adjusting the length of the piston rod's reciprocating stroke within the storage cylinder, the amount of pesticide supplied is precisely controlled. This achieves the goals of improving the utilization efficiency of liquid pesticides, maximizing their effectiveness, ensuring rational pesticide use, guaranteeing control results, reducing application costs, minimizing pesticide pollution to soil, air, groundwater, and the environment, and avoiding harm to human health. It features a novel, unique, rational, and compact structure, simple and convenient control, high precision, wide applicability, and strong adaptability. Attached Figure Description

[0006] Figure 1 This is a schematic diagram of the overall structure of a liquid pesticide application mechanism;

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

[0008] Figure 3 yes Figure 1 A bottom view;

[0009] Figure 4 yes Figure 3 Enlarged view of part A;

[0010] Figure 5 yes Figure 3 Sectional view along line B-B;

[0011] Figure 6 yes Figure 5 Enlarged view of part C;

[0012] Figure 7 yes Figure 5 D-D sectional view;

[0013] Figure 8 yes Figure 5 E-E sectional view;

[0014] Figure 9 This is a three-dimensional schematic diagram of the overall structure of the liquid pesticide application mechanism.

[0015] Part number description in the image:

[0016] 1. Inlet check valve; 2. Liquid storage cylinder; 3. Drain cylinder; 4. Hanging seat; 5. Push-pull rod; 6. Push-pull plate; 7. Transmission housing; 8. Pin A; 9. Connecting rod; 10. Pin B; 11. Gear shaft; 12. Arc-shaped grooved connecting rod; 13. Piston rod; 14. Drive plate; 15. Rack; 16. Cylindrical pin; 17. Semi-circular opening and closing left leaf plate; 18. Semi-circular opening and closing right leaf plate; 19. Sleeve; 20. Cross groove plate; 21. Rotating shaft; 22. Motor; 23. Motor shaft; 24. Crank; 25. Adjusting block; 26. Drive rod. Detailed Implementation

[0017] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. A liquid pesticide application mechanism includes a piston rod 13 axially reciprocatingly inserted into the cavity of a fixedly configured storage cylinder 2; an inlet check valve 1 interconnected with the upper part of the storage cavity of the storage cylinder 2; a drive plate 14 axially reciprocatingly inserted into a strip-shaped through hole on the lower wall of the storage cylinder 2; the upper end of the drive plate 14 being fixedly attached to the piston rod 13; a transmission housing 7 suspended and fixedly mounted on the outer side of the lower wall of the storage cylinder 2, located to the side of the drive plate 14; a push-pull plate 6 laterally reciprocatingly inserted into the top wall of the transmission housing 7; and a vertically oriented transmission housing 7... A gear shaft 11 is rotatably mounted on the side wall. A cylindrical pin 16 is fixedly mounted on the gear side wall of the gear shaft 11. A rack 15 is installed in the cavity of the transmission housing 7, located below the gear shaft 11, and can reciprocate laterally. The outer end of the rack 15 is connected to the drive plate 14. The rack 15 meshes with the gear shaft 11. The cylindrical pin 16 is slidably inserted into the arc-shaped slot of the arc-shaped grooved connecting rod 12. The lower end of the arc-shaped grooved connecting rod 12 is hinged to the inner wall of the vertical side wall of the transmission housing 7. The left and right ends of the connecting rod 9 are respectively connected to the arc-shaped groove through pin B10 and pin A8. The upper end of the grooved connecting rod 12 is hinged to the lower side of the push-pull plate 6; a drainage cylinder 3 is fixedly mounted coaxially on the drainage end of the liquid storage cylinder 2; a hanging seat 4 is fixedly mounted on the lower side of the drainage cylinder 3; a cross groove plate 20 is installed on the lower end of the hanging seat 4, which can be moved laterally back and forth; a rotating shaft 21 is rotatably inserted into the shaft holes of the drainage cylinder 3, the hanging seat 4, and the cross groove plate 20 from top to bottom; a sleeve 19 is rotatably fitted on the outside of the rotating shaft 21; semi-circular opening and closing right leaf plates 18 are respectively fixedly mounted symmetrically on the sleeve 19 and the rotating shaft 21, located inside the cylinder cavity of the drainage cylinder 3. The semi-circular opening and closing left leaf plate 17 and the semi-circular opening and closing right leaf plate 18 cooperate with the semi-circular opening and closing left leaf plate 17 to close or open the drainage cylinder 3. The bottom ends of the rotating shaft 21 and the sleeve 19 are respectively inserted into the left and right slots of the cross groove plate 20. The cross groove plate 20 is connected to the push-pull rod 5. The motor 22 is fixedly arranged on the outer side of the piston rod 13. The crank 24 is fixedly mounted on the motor shaft 23 of the motor 22. The adjusting block 25 is fixedly mounted on the crank 24 in a radially adjustable manner. The two ends of the drive rod 26 are respectively hinged to the adjusting block 25 and the piston rod 13.

[0018] When in use, start the motor 22. The rotational power of the motor 22 drives the piston rod 13 to move axially back and forth in the liquid storage cylinder 2 via the motor shaft 23, crank 24, adjusting block 25, and drive rod 26. When the piston rod 13 is pulled outward, the negative pressure suction in the liquid storage cylinder 2 opens the liquid inlet check valve 1, and liquid pesticide is filled into the cylinder cavity of the liquid storage cylinder 2. When the piston rod 13 moves inward and squeezes the liquid pesticide, the liquid inlet check valve 1 closes and stops filling. Simultaneously, when the piston rod 13 moves inward, it drives the push-pull mechanism via the drive plate 14, rack 15, gear shaft 11, cylindrical pin 16, arc-shaped grooved connecting rod 12, and connecting rod 9. Plate 6 moves in the same direction as piston rod 13 on the top wall of transmission housing 7. Push-pull plate 6 pushes cross groove plate 20 to move on hanging seat 4 via push-pull rod 5. Cross groove plate 20 simultaneously drives semi-circular opening and closing left leaf plate 17 and semi-circular opening and closing right leaf plate 18 to rotate in opposite directions in drainage cylinder 3, opening drainage cylinder 3. Through the squeezing motion of piston rod 13, liquid pesticide in storage cylinder 3 is quantitatively discharged. When motor 22 drives piston rod 13 to move in the opposite direction, semi-circular opening and closing left and right leaf plates 17 and 18 close drainage cylinder 3, and at the same time, liquid inlet check valve 1 opens, completing the refilling of liquid pesticide. This cycle is repeated. Adjusting the position of adjusting block 25 on crank 24, that is, changing the eccentric distance of adjusting block 25 from the axis of motor shaft 23, completes the adjustment of the reciprocating stroke distance of piston rod 13 in storage cylinder 2, realizing precise quantitative application of liquid pesticide.

Claims

1. A liquid pesticide dispensing mechanism, characterized in that: A piston rod (13) is axially reciprocatingly inserted into the cavity of a fixedly configured liquid storage cylinder (2). A one-way valve (1) for liquid inlet is installed above the liquid storage cavity of the liquid storage cylinder (2). A drive plate (14) is axially reciprocatingly inserted into a strip-shaped through hole on the lower side wall of the liquid storage cylinder (2). The upper end of the drive plate (14) is fixedly attached to the piston rod (13). A transmission housing (7) is suspended and fixedly installed on the outside of the lower side wall of the liquid storage cylinder (2), located to the side of the drive plate (14). A push-pull plate (6) is laterally reciprocatingly inserted into the top wall of the transmission housing (7). A gear shaft (1) is rotatably installed on the vertical side wall of the transmission housing (7). 1) A cylindrical pin (16) is fixedly mounted on the gear side wall of the gear shaft (11). A rack (15) is installed in the cavity of the transmission housing (7) below the gear shaft (11) and can be moved laterally back and forth. The outer end of the rack (15) is connected to the drive plate (14). The rack (15) meshes with the gear shaft (11). The cylindrical pin (16) is slidably inserted into the arc-shaped slot of the arc-shaped grooved connecting rod (12). The lower end of the arc-shaped grooved connecting rod (12) is hinged to the inner wall of the vertical side wall of the transmission housing (7). The left and right ends of the connecting rod (9) are respectively connected to the upper end of the arc-shaped grooved connecting rod (12) and the upper end of the arc-shaped grooved connecting rod (12) through pin B (10) and pin A (8). The lower part of the push-pull plate (6) is hinged; a drainage cylinder (3) is fixedly mounted coaxially on the drainage end of the storage cylinder (2), and a hanging seat (4) is fixedly mounted on the lower part of the drainage cylinder (3). A cross groove plate (20) is installed on the lower end of the hanging seat (4) in a way that allows for transverse reciprocating movement. A rotating shaft (21) is rotatably inserted into the shaft holes of the drainage cylinder (3), the hanging seat (4), and the cross groove plate (20) from top to bottom. A sleeve (19) is rotatably fitted on the outside of the rotating shaft (21). A semi-circular opening and closing right leaf plate (18) and a semi-circular opening and closing left leaf plate (18) are respectively fixedly mounted symmetrically on the sleeve (19) and the rotating shaft (21) inside the cavity of the drainage cylinder (3). The blade (17), the semi-circular opening and closing right blade (18) and the semi-circular opening and closing left blade (17) cooperate to close or open the drainage cylinder (3), the bottom ends of the rotating shaft (21) and the sleeve (19) are respectively inserted into the left and right slots of the cross groove plate (20); the cross groove plate (20) is connected to the push-pull rod (5); the motor (22) is fixedly arranged on the outer side of the piston rod (13), the crank (24) is fixedly mounted on the motor shaft (23) of the motor (22), the adjusting block (25) is fixedly mounted on the crank (24) in a radially adjustable manner, and the two ends of the drive rod (26) are respectively hinged to the adjusting block (25) and the piston rod (13).

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