Variable pesticide spraying device for crops

Abstract

The utility model belongs to the field of crop pesticide spraying, and particularly relates to a crop variable pesticide spraying device which comprises a supporting block, a supporting frame is fixedly connected to the top end of the supporting block, a spraying assembly is arranged at the bottom of the supporting block, and a stirring assembly is arranged in the spraying assembly. And a square blocking assembly is arranged in the spraying assembly. The electromagnetic valve control system on each electromagnetic valve nozzle is independent, and the flow of each electromagnetic valve nozzle is accurately adjusted through the duty ratio of PWM (Pulse Width Modulation), so that the electromagnetic valve nozzles can achieve the effects of uniform atomization effect at any speed section and accurate pesticide spraying amount; in the pesticide spraying process, a filter screen can block filtered matter and particulate matter in pesticide, blocking of a solenoid valve nozzle is avoided, the interior of the pesticide box is stirred through an eccentric wheel, meanwhile, a push rod moves left and right on the inner wall of the pesticide box in a reciprocating mode, sediment at the bottom of the pesticide box is avoided, and therefore the pesticide can be evenly sprayed out conveniently.

Description

Technical Field

[0001] The utility model relates to the field of crop spraying, in particular to a variable spraying device for crops. Background Art

[0002] Spraying pesticides is the main way to prevent and control crop diseases, insect pests and weeds. However, there are still many areas where spraying is done manually, so the efficiency is low. Automatic spraying with spraying equipment can effectively speed up the efficiency of crop prevention and control. Compared with traditional spraying equipment, spraying equipment can accurately record the amount of spraying and the spraying area, thereby improving the prevention and control effect.

[0003] At present, the traditional variable spray system directly adjusts the spray pressure according to the speed, so as to achieve the effect of controlling the set flow rate. Therefore, when the speed is relatively slow, the pressure is relatively small, resulting in poor pesticide atomization effect, uneven spraying, and easy to cause pesticide residues. In addition, the liquid medicine is prone to precipitation when it is left in the medicine box for a long time, thus affecting the spray effect. Therefore, a variable spray device for crops is proposed to address the above problems. Utility Model Content

[0004] In order to make up for the shortcomings of the prior art and avoid the problems of uneven spraying and affected spraying effect, the utility model provides a variable spraying device for crops.

[0005] The technical solution adopted by the utility model to solve the technical problem is: a variable spraying device for crops, comprising a support block, the top of the support block is fixedly connected to a support frame, the bottom of the support block is provided with a spray assembly, the inside of the spray assembly is provided with a stirring assembly, and the inside of the spray assembly is provided with a square plugging assembly;

[0006] The spray assembly includes a mounting frame fixedly installed on the left and right sides of the support block, a pipe is sleeved inside the mounting frame, a solenoid valve nozzle is fixedly installed at the bottom end of the pipe, a medicine box is fixedly installed at the top end of the support frame, a connecting pipe is fixedly connected to the bottom end of the medicine box, and a medicine pump is fixedly connected to the surface of the connecting pipe.

[0007] Preferably, the solenoid valve nozzles are eight and are equidistantly spaced. The solenoid valve nozzles are driven by PWM signals. The switching period of the solenoid valve nozzles remains unchanged while the switch on time is adjustable. The switch on time / switching period is the duty cycle. The spray flow rate is regulated by adjusting the duty cycle.

[0008] Preferably, one end of the connecting pipe away from the medicine box is fixedly installed on the top of the pipeline, the medicine box, the connecting pipe and the pipeline are connected, and the medicine pump is electrically connected to the operation screen.

[0009] Preferably, the stirring assembly includes an electromagnetic chamber fixedly mounted on the bottom wall of the medicine box, a rotating rod is rotatably connected inside the medicine box, a rotor is fixedly mounted on the bottom end of the rotating rod, an eccentric wheel is fixedly mounted on the top surface of the rotating rod, telescopic rods are fixedly mounted on the left and right sides of the inner wall of the medicine box, a pressure spring is fixedly mounted inside the telescopic rod, a connecting rod is fixedly mounted on the bottom end of the telescopic rod close to the eccentric wheel, and a push rod is fixedly mounted on the bottom end of the connecting rod.

[0010] Preferably, the rotor is rotatably connected to the top of the electromagnetic cavity, an electromagnet and a battery pack are arranged inside the electromagnetic cavity, the electromagnet and the battery pack are electrically connected, the electromagnet is electrically connected to a control switch, and the control switch can be operated to start the electromagnetic cavity, so that the rotor rotates under the action of magnetic force.

[0011] Preferably, the eccentric wheel and the telescopic rod are in adaptive contact, the end of the pressure spring away from the telescopic rod is fixedly mounted on the inner wall of the medicine box, and the push rod is adaptively slidably connected to the bottom wall of the medicine box. When the eccentric wheel rotates, it will periodically push the left and right telescopic rods, thereby causing the push rod to slide on the inner wall of the medicine box, so that the medicine liquid inside the medicine box will not be static.

[0012] Preferably, the square plugging assembly comprises a cavity opened in the bottom wall of the medicine box, a connecting groove is opened at the bottom end of the cavity, a filter is clamped inside the cavity, and a pull rod is fixedly installed at the top end of the filter.

[0013] Preferably, the connecting groove is connected to the connecting pipe, and the pull rod is in an inverted L shape. The operator can pull the pull rod to drive the filter screen out of the cavity to facilitate cleaning of the filter screen.

[0014] The utility model is beneficial in that:

[0015] The utility model independently controls the solenoid valve on each solenoid valve nozzle, and accurately adjusts the flow rate of each solenoid valve nozzle through the duty cycle of PWM, so that the solenoid valve nozzle can achieve uniform atomization effect at any speed range, thereby achieving the effect of accurate spraying amount;

[0016] During the spraying process, the filter can block the filtered matter and particulate matter in the pesticide to avoid clogging the solenoid valve nozzle, and stir the inside of the medicine box through the eccentric wheel. At the same time, the push rod is moved back and forth left and right on the inner wall of the medicine box to avoid precipitation at the bottom of the medicine box, so as to facilitate uniform spraying of the medicine liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0019] Figure 2 This is a schematic diagram of the solenoid valve nozzle installation structure of the utility model;

[0020] Figure 3 This is a schematic diagram of the cross-sectional structure of the medicine box of the utility model;

[0021] Figure 4 For the utility model Figure 3 Enlarged structural diagram at A in the middle.

[0022] In the figure: 1. support block; 2. support frame; 3. spray assembly; 31. mounting frame; 32. pipeline; 33. solenoid valve nozzle; 34. medicine box; 35. connecting pipe; 36. medicine pump; 4. stirring assembly; 41. electromagnetic chamber; 42. rotating rod; 43. rotor; 44. eccentric wheel; 45. telescopic rod; 46. pressure spring; 47. connecting rod; 48. push rod; 5. square plugging assembly; 51. cavity; 52. connecting groove; 53. filter screen; 54. pull rod. 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 of 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] The following is combined with Figure 1 —4 Further details of this application:

[0025] The present application embodiment discloses a variable spraying device for crops. Figure 1 A variable spraying device for crops, comprising a support block 1, a support frame 2 is fixedly connected to the top of the support block 1, a spray assembly 3 is arranged at the bottom of the support block 1, a stirring assembly 4 is arranged inside the spray assembly 3, and a square plugging assembly 5 is arranged inside the spray assembly 3;

[0026] Reference Figure 1 - Figure 2The spray assembly 3 includes a mounting frame 31 fixedly mounted on the left and right sides of the support block 1, a pipe 32 is sleeved inside the mounting frame 31, a solenoid valve nozzle 33 is fixedly mounted at the bottom end of the pipe 32, there are eight solenoid valve nozzles 33 and they are distributed at equal distances, the solenoid valve nozzle 33 is driven by a PWM signal, the switching cycle of the solenoid valve nozzle 33 remains unchanged while the switch on time is adjustable, the switch on time / switching cycle is the duty cycle, and the spray flow rate is adjusted by adjusting the duty cycle, a medicine box 34 is fixedly mounted on the top of the support frame 2, a connecting pipe 35 is fixedly connected to the bottom end of the medicine box 34, a medicine pump 36 is fixedly connected to the surface of the connecting pipe 35, and one end of the connecting pipe 35 away from the medicine box 34 is fixedly mounted on the top end of the pipe 32, the medicine box 34, the connecting pipe 35 and the pipe 32 are connected, and the medicine pump 36 is electrically connected to the operation screen.

[0027] Reference Figure 3 The stirring assembly 4 includes an electromagnetic chamber 41 fixedly mounted on the bottom wall of the medicine box 34, a rotating rod 42 is rotatably connected inside the medicine box 34, a rotor 43 is fixedly mounted on the bottom end of the rotating rod 42, and the rotor 43 is rotatably connected to the top of the electromagnetic chamber 41. An electromagnet and a battery pack are arranged inside the electromagnetic chamber 41. The electromagnet and the battery pack are electrically connected, and the electromagnet is electrically connected to a control switch. The control switch can be operated to start the electromagnetic chamber 41, so that the rotor 43 rotates under the action of magnetic force. An eccentric wheel 44 is fixedly mounted on the surface of the top of the rotating rod 42, and telescopic rods are fixedly mounted on both sides of the inner wall of the medicine box 34. 45, a pressure spring 46 is fixedly installed inside the telescopic rod 45, a connecting rod 47 is fixedly installed on the bottom end of the telescopic rod 45 close to the eccentric wheel 44, a push rod 48 is fixedly installed on the bottom end of the connecting rod 47, the eccentric wheel 44 and the telescopic rod 45 are adaptively contacted, one end of the pressure spring 46 away from the telescopic rod 45 is fixedly installed on the inner wall of the medicine box 34, and the push rod 48 is adaptively slidably connected to the bottom wall of the medicine box 34, and when the eccentric wheel 44 rotates, it will periodically push the left and right telescopic rods 45, thereby making the push rod 48 slide on the inner wall of the medicine box 34, so that the medicine liquid inside the medicine box 34 will not stand still.

[0028] Reference Figure 3 - Figure 4 The square blocking component 5 includes a cavity 51 opened on the bottom wall of the medicine box 34, a connecting groove 52 is opened at the bottom end of the cavity 51, a filter screen 53 is clamped inside the cavity 51, a pull rod 54 is fixedly installed on the top of the filter screen 53, the connecting groove 52 is connected to the connecting pipe 35, and the pull rod 54 is in an inverted L shape. The operator can pull the pull rod 54 to drive the filter screen 53 out of the cavity 51 to facilitate cleaning of the filter screen 53.

[0029] Working principle: The operator pours the pesticide into the medicine box 34. When the pesticide enters the connecting pipe 35 through the cavity 51 and the connecting groove 52, the particles in the pesticide are filtered and blocked by the cavity 51.

[0030] Afterwards, the operator can control the medicine pump 36 to make the pesticide in the medicine box 34 flow into the inside of the pipeline 32 through the connecting pipe 35. At this time, the operator opens the first, fourth, seventh, second, fifth, eighth, third and sixth solenoid valve nozzles 33 from left to right in sequence, and opens them in sequence every two solenoid valve nozzles 33. By adjusting the different opening and closing times of each solenoid valve nozzle 33, the pressure stability is improved as much as possible, and then the duty cycle can be adjusted to achieve the adjustment of the spray flow rate;

[0031] During the spraying process, the operator can start the electromagnetic chamber 41 by controlling the switch. At this time, the magnetic interaction between the electromagnetic chamber 41 and the rotor 43 causes the rotor 43 to rotate. At this time, the rotor 43 drives the eccentric wheel 44 to rotate through the rotating rod 42. At this time, the eccentrically rotating eccentric wheel 44 will periodically push the left and right telescopic rods 45. At this time, the telescopic rod 45 will be pressed by the eccentric wheel 44 to compress the pressure spring 46. Then, the telescopic rod 45 will drive the push rod 48 to slide on the bottom wall of the medicine box 34 through the connecting rod 47, so that the medicine liquid that may be precipitated on the bottom wall of the medicine box 34 is stirred to prevent the medicine liquid from sinking to the bottom.

[0032] When spraying is finished, the operator can open the medicine box 34 and then pull the pull rod 54 to drive the filter 53 to move upward and out of the cavity 51. At this time, the filter 53 can be cleaned and then installed inside the cavity 51.

[0033] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A variable spraying device for crops, characterized in that: It comprises a support block (1), the top of the support block (1) is fixedly connected to a support frame (2), the bottom of the support block (1) is provided with a spray assembly (3), the interior of the spray assembly (3) is provided with a stirring assembly (4), and the interior of the spray assembly (3) is provided with a square plugging assembly (5); The spray assembly (3) comprises a mounting frame (31) fixedly mounted on the left and right sides of the support block (1); a pipe (32) is sleeved inside the mounting frame (31); a solenoid valve nozzle (33) is fixedly mounted on the bottom end of the pipe (32); a medicine box (34) is fixedly mounted on the top end of the support frame (2); a connecting pipe (35) is fixedly connected to the bottom end of the medicine box (34); and a medicine pump (36) is fixedly connected to the surface of the connecting pipe (35).

2. A variable spraying device for crops according to claim 1, characterized in that: There are eight solenoid valve nozzles (33) which are distributed at equal intervals. The solenoid valve nozzles (33) are driven by PWM signals. The switching cycle of the solenoid valve nozzles (33) remains unchanged, while the switch on time is adjustable.

3. A variable spraying device for crops according to claim 1, characterized in that: One end of the connecting pipe (35) away from the medicine box (34) is fixedly mounted on the top of the pipeline (32); the medicine box (34), the connecting pipe (35) and the pipeline (32) are in communication; and the medicine pump (36) is electrically connected to an operating screen.

4. A variable rate spraying device for crops according to claim 1, characterized in that: The stirring assembly (4) comprises an electromagnetic chamber (41) fixedly mounted on the bottom wall of the medicine box (34); a rotating rod (42) is rotatably connected inside the medicine box (34); a rotor (43) is fixedly mounted on the bottom end of the rotating rod (42); an eccentric wheel (44) is fixedly mounted on the top surface of the rotating rod (42); telescopic rods (45) are fixedly mounted on both left and right sides of the inner wall of the medicine box (34); a pressure spring (46) is fixedly mounted inside the telescopic rod (45); a connecting rod (47) is fixedly mounted on the bottom end of the telescopic rod (45) close to the eccentric wheel (44); and a push rod (48) is fixedly mounted on the bottom end of the connecting rod (47).

5. A variable rate spraying device for crops according to claim 4, characterized in that: The rotor (43) is rotatably connected to the top of the electromagnetic cavity (41), and an electromagnet and a battery pack are arranged inside the electromagnetic cavity (41). The electromagnet and the battery pack are electrically connected, and the electromagnet is electrically connected to a control switch.

6. A variable rate spraying device for crops according to claim 4, characterized in that: The eccentric wheel (44) and the telescopic rod (45) are in adaptive contact with each other, one end of the pressure spring (46) away from the telescopic rod (45) is fixedly mounted on the inner wall of the medicine box (34), and the push rod (48) is adaptively slidably connected to the bottom wall of the medicine box (34).

7. A variable rate spraying device for crops according to claim 1, characterized in that: The square plugging assembly (5) comprises a cavity (51) formed on the bottom wall of the medicine box (34), a connecting groove (52) being formed at the bottom end of the cavity (51), a filter screen (53) being clamped inside the cavity (51), and a pull rod (54) being fixedly mounted at the top end of the filter screen (53).

8. A variable rate spraying device for crops according to claim 7, characterized in that: The communicating groove (52) is connected to the connecting pipe (35), and the pull rod (54) is in an inverted L-shape.

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