CN111213529A

CN111213529A - Agricultural spray set

Info

Publication number: CN111213529A
Application number: CN202010188312.5A
Authority: CN
Inventors: 陈国义; 孙申安; 吴兆国; 马明霞; 温玉清; 王宾; 王爱华
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-03-17
Filing date: 2020-03-17
Publication date: 2020-06-02

Abstract

The invention discloses an agricultural spraying device, which belongs to the technical field of greenhouse irrigation and comprises a lifting adjusting mechanism, a water supply mechanism and a nozzle mechanism, wherein the water supply mechanism comprises two water pumping cylinders internally provided with pistons, the initial positions of the two pistons are one high and one low, the two pistons are driven by a positive and negative rotation motor, and the positive and negative rotation motor is connected with a screw rod through a transmission structure; the spray head mechanism comprises a main spray head connected with a water supply hose and a screw rod slider structure driving the main spray head to move horizontally, the lifting adjusting mechanism comprises two vertical columns fixed on the ground and lifting plates connected to the upper ends of the vertical columns through a vertically arranged hydraulic cylinder, and a screw rod is connected between the two lifting plates. The sprayer mechanism can travel, can realize continuous water supply of the water supply mechanism while driving the sprayer mechanism to travel, can adjust the height of the sprayer mechanism according to the plant height of crops, does not influence the linkage relation among related driving mechanisms, and has better spraying effect and wider application range.

Description

Agricultural spray set

Technical Field

The invention relates to the technical field of greenhouse irrigation, in particular to an agricultural spraying device.

Background

The greenhouse planting has better heat preservation performance and is popular with people. However, the greenhouse is a relatively closed production facility, natural rainfall cannot be directly utilized, and the water required by the growth of plants planted in the greenhouse is completely ensured by artificial irrigation. Spraying is a relatively water-saving implementation of manual irrigation. The existing agricultural spraying device for the greenhouse usually comprises a water supply mechanism and a spray head mechanism, wherein the spray head mechanism cannot be used for adjusting the height, so that the spray head mechanism cannot be applied to spraying plants with different heights; and each mechanism is driven independently, the control is complicated, and the application value is low.

Disclosure of Invention

1. Technical problem to be solved

The invention aims to solve the technical problem of providing an agricultural spraying device, wherein a nozzle mechanism of the agricultural spraying device can travel, continuous water supply of a water supply mechanism can be realized while the nozzle mechanism is driven to travel, the height of the nozzle mechanism can be adjusted according to the plant height of crops, the linkage relation among related driving mechanisms is not influenced, the spraying effect is good, the application range is wide, and the application value is high.

2. Technical scheme

In order to solve the problems, the invention adopts the following technical scheme:

an agricultural spraying device comprises a lifting adjusting mechanism, a water supply mechanism and a spray head mechanism,

the lifting adjusting mechanism comprises two upright posts which are oppositely and vertically fixed on the ground, a hydraulic cylinder which is longitudinally connected to the upper ends of the upright posts and a lifting plate which is fixed at the top of an output shaft of the hydraulic cylinder;

the water supply mechanism comprises two water pumping cylinders arranged in parallel, pistons arranged in the water pumping cylinders, water pumping pipes communicated with the bottoms of the water pumping cylinders, water delivery pipes communicated with one side of the lower parts of the water pumping cylinders and a driving assembly for driving the two pistons to alternately act, the tops of the water pumping cylinders are provided with through holes for the upper ends of the pistons to penetrate through, in an initial state, the piston in one water pumping cylinder is positioned at the inner bottom of the water pumping cylinder, and the piston in the other water pumping cylinder is positioned at the inner top of the water pumping cylinder; the two water delivery pipes are communicated with the same water delivery hose, one end of the water pumping pipe connected with the water pumping cylinder is provided with a one-way valve opened towards the water pumping cylinder, and one end of the water delivery pipe connected with the water pumping cylinder is provided with a one-way valve opened towards the water delivery hose;

the driving assembly comprises a push-pull rod longitudinally connected to the upper end of the piston, a rotating disc connected to the upper end of the push-pull rod, and a driving shaft connected to the center of one side of the rotating disc back to the piston, the other end of one of the driving shafts is connected with a forward and reverse rotating motor, the bottom of the forward and reverse rotating motor is supported with a supporting plate connected with the top of the side pillar, the bottom of the hydraulic cylinder is arranged on the supporting plate, the two driving shafts are connected through a belt transmission structure, a right vertical plate is fixed on one side of the supporting plate facing the rotating disc, one end of a driving shaft which is not connected with a forward and reverse rotating motor and is back to the rotating disc is connected to the right vertical plate through a bearing, a hinge shaft transversely penetrating through the upper end of the push-pull rod is fixed at the eccentric position of one side of the rotating disc connected with the push-pull rod, the lower end of the push-pull rod and the upper end of the piston jointly penetrate through a hinged shaft, and limit stop blocks are fixedly sleeved on the two end sides of the hinged shaft;

the sprayer mechanism comprises a main sprayer which is positioned at a high position and connected with the upper end of a water supply hose and a screw rod slider structure which drives the main sprayer to horizontally move, the screw rod slider structure comprises a screw rod which is horizontally arranged, a slider which is sleeved on the screw rod in a sliding manner, a top plate which is horizontally connected between lifting plates at two sides, a sliding rail which is arranged at the bottom of the top plate and is parallel to the screw rod, and a limiting block which is connected in the sliding rail in a sliding manner and fixed on the slider, one end of the screw rod is connected with a driving rod, the other ends of the screw rod and the driving rod are respectively connected to the lifting plates at the corresponding sides through bearings, and one end; the upper end of the right vertical plate is fixedly connected with a right vertical plate, the lower end of the right vertical plate is fixedly connected with a right rotating disc, a left vertical plate is fixed on the supporting plate and corresponds to one side of the right vertical plate, which is back to the rotating disc, a sliding groove which is opposite to the right vertical plate is formed in the supporting plate, sliding grooves which extend transversely are formed in the opposite faces of the left vertical plate and the right vertical plate, a sliding rod which can move transversely along the sliding groove is connected between the two sliding grooves, first belt wheels are fixedly sleeved on the sliding rod, a driving rod and a driving shaft which is connected with a forward and reverse motor, the first belt wheels are three and encircle a first driving belt together, an upper pull rod which extends downwards is rotatably sleeved.

Furthermore, the belt transmission structure comprises second belt wheels fixedly sleeved on the two driving shafts respectively and a second transmission belt which surrounds the two second belt wheels together, and the second belt wheels on the driving shafts connected with the forward and reverse rotating motors are positioned on one side, facing the rotating disc, of the first belt wheels on the driving shafts. After the forward and reverse rotating motor is started, the second belt wheel on the driving shaft can be directly driven to rotate, and then the second belt wheel on the other driving shaft is driven to rotate through the second transmission belt, so that the other driving shaft can be driven to rotate.

Furthermore, the main spray head comprises a cylindrical driving box and a spray head cavity which is rotatably connected to the bottom of the driving box, the top of the driving box is communicated with the water supply hose, a driving fan which is positioned in the middle of the driving box and a horizontally arranged partition plate which is positioned above the driving fan are arranged in the driving box, the peripheral sides of the partition plates are fixed on the inner wall of the driving box in an attached mode, flushing holes which are in one-to-one correspondence with and inclined with fan blades of the driving fan are formed in the edge of the partition plate, the extension lines of the flushing holes penetrate through the fan blades of the driving fan, the bottom of the driving box is rotatably connected with a longitudinally arranged water outlet hard pipe through bearings, and at least two short connecting rods which are connected to the upper end of the water outlet hard pipe are fixed on the; the shower nozzle cavity is connected in the lower extreme of play water hard tube, evenly seted up side spout along its week side on the shower nozzle cavity, spout in evenly being connected with of shower nozzle cavity bottom. The water gets into and washes out through the washing out hole on the baffle behind the drive box, and hit and beat on the flabellum of drive fan, thereby can promote the drive fan and rotate, then the water whereabouts gets into out the water hard tube from the clearance of short connecting rod side, reentrant shower nozzle cavity, finally from side spout and well spout blowout, the rotation of drive fan drives out the water hard tube through the short connecting rod and rotates simultaneously, thereby can drive the shower nozzle cavity and rotate, make from side spout and well spout spun water can cover comparatively complete circular region, can also make the water in the shower nozzle cavity rotate and produce the effect of centrifugal force, can enlarge the distance that can arrive from side spout spun water, thereby can promote the spraying effect who sprays the mechanism.

Furthermore, one end of the water delivery hose, which is connected with the main nozzle, is connected with a water storage box fixedly connected with the sliding block, the water storage box is communicated with the top of the driving box through a connecting pipe, and an overflow valve is arranged on the connecting pipe. One end of the water delivery hose, which is connected with the main nozzle, is connected with a water storage box fixedly connected with the sliding block, the water storage box is communicated with the top of the driving box through a connecting pipe, and an overflow valve is arranged on the connecting pipe. The water that the delivery hose sent up accumulates in the retaining box earlier, and when the water pressure on the effect underflow valve was enough, the overflow valve could be opened to can ensure that more water just from the beginning gets into the drive box together, thereby can ensure the rotation of drive fan.

Furthermore, a sprinkling irrigation mechanism is arranged under the spray head mechanism, and comprises a flat frame plate paved among ridges, an underground water pipe horizontally arranged below the flat frame plate and parallel to the screw rod, telescopic hoses which are arranged at equal intervals along the length direction of the underground water pipe and communicated with the upper part of the underground water pipe, auxiliary spray heads connected to the upper ends of the telescopic hoses and longitudinal guide assemblies arranged at the sides of the auxiliary spray heads;

the flat frame plate is provided with through holes which correspond to the auxiliary nozzles one by one and are positioned right above the auxiliary nozzles, one end of the underground water pipe extends upwards to the upper part of the ground and is connected with a water pipe joint, the other end of the underground water pipe is closed, one end of the underground water pipe, which is connected with the water pipe joint, is provided with a switch valve, and one end of the water pumping pipe, which is back to the water pumping barrel, is communicated with one end of the underground water pipe, which is provided with the switch valve;

the auxiliary spray head comprises a shell with a square structure, a switch board horizontally arranged in the shell, a transverse sliding groove and a longitudinal sliding groove which are arranged on the inner wall of the shell corresponding to the front side and the rear side of the switch board, a first spring connecting the top of the shell with one end of the switch board, and a water spray opening arranged on the upper part of the side wall of the shell, wherein the upper end of the longitudinal sliding groove is communicated with one end of the transverse sliding groove corresponding to the side of the first spring, the front side and the rear side of the top of one end of the switch board connected with the first spring are respectively fixed with a connecting rod which is connected into the longitudinal sliding groove of the corresponding side in a sliding way, the front side and the rear side of the top of one end of the switch board back to the side of the first spring are respectively fixed with a connecting rod which is connected into the transverse sliding groove of the corresponding side, the periphery of the switch board is attached to the inner wall of the shell, the positions of, a switch lug with a built-in magnet is fixed on the side wall of the through hole corresponding to the side where the iron block is located;

the longitudinal guide assembly comprises a limiting sleeve fixed on two opposite sides of the bottom end of the auxiliary spray head and a guide rod longitudinally fixed on the underground water pipe and penetrating through the limiting sleeve.

When in use, the switch valve is opened to lead the water body to enter the underground water pipe and then enter the auxiliary spray head along the flexible hose, because of the plugging effect of the switch plate, the water body can push the auxiliary spray head to rise and stretch the telescopic hose, the auxiliary spray head longitudinally moves upwards to penetrate through the through hole on the flat frame plate, in the process, the iron block in the switch board is subjected to the magnetic attraction of the magnet on the side wall of the through hole, so that one side of the iron block in the switch board is suspended to rise, the switch board on the opposite side still continues to rise along with the auxiliary nozzle, at the moment, the first spring begins to be stretched, the connecting rod on the side where the first spring is located relatively moves downwards along the longitudinal sliding groove, the connecting rod on the opposite side moves towards the side where the longitudinal sliding groove is located along the transverse sliding groove, the switch board is opened, and water can enter the upper part of the switch board and is sprayed out from the water spraying port, so that the sprinkling irrigation on the lower part of crops is realized, and the effect of supplementing water to the crops is promoted; after the sprinkling irrigation, stop to supply water, under the action of gravity of the reset action of first spring and vice shower nozzle, make the shell downwardly moving of vice shower nozzle, drive the switch board one end downwardly moving of iron plate dorsad, make the connecting rod of this side remove to one side of iron plate dorsad along horizontal spout, resume gradually to the horizontality to the switch board, realize the shutoff to passageway in the vice shower nozzle, along with the continuation decline of vice shower nozzle, the iron plate breaks away from the effect scope of magnet, initial condition is got back to vice shower nozzle. The sprinkling irrigation mechanism is arranged among the ridges, so that damage to corresponding pipelines during operation such as soil loosening and the like can be avoided, and operation such as soil loosening and the like can be prevented from being hindered; and the spray pipe mechanism can move in a lifting manner, so that related workers can be prevented from being stumbled.

Furthermore, a bottom plate is fixedly sleeved at the bottom of the telescopic hose, and a second spring is connected between the bottom of the auxiliary spray head and the bottom plate. In the process that the water flow impacts to push the auxiliary spray head to rise, the second spring is stretched; when the water supply is stopped, the auxiliary spray head begins to descend under the action of gravity, and the resetting action of the second spring can assist in pulling the auxiliary spray head to descend and reset.

Furthermore, one end of the connecting rod, which is positioned in the corresponding sliding groove, is rotatably connected with a roller. The sliding between the connecting rod and the corresponding sliding groove is converted into the rolling of the roller, so that the connecting rod moves more conveniently along the corresponding sliding groove.

Furthermore, a sealing rubber gasket corresponding to the part of the switch board except the convex board is fixed on the height position of the switch board corresponding to the initial state on the inner wall of the shell, and the sealing rubber gasket is fixed on the corresponding side face of the convex board, which is in contact with the longitudinal sliding groove. The sealing rubber gasket can ensure the sealing performance between the lower circumferential side of the switch plate and the inner wall of the shell in the initial state, so that the auxiliary spray head can be pushed to rise by water.

3. Advantageous effects

(1) The invention comprises a nozzle mechanism and a water supply mechanism, wherein the nozzle mechanism comprises a main nozzle which is positioned at a high position and connected with the upper end of a water supply hose and a screw rod slide block structure which drives the main nozzle to horizontally move, the water supply mechanism comprises two water pumping cylinders with pistons arranged inside, the initial positions of the two pistons are one high and one low, the two pistons are driven by a positive and negative rotation motor, and the positive and negative rotation motor is also connected with a screw rod through a transmission structure. When the water pumping device is applied, the pistons are driven by a forward and reverse rotating motor and under the auxiliary action of corresponding one-way valves, the water is pumped into the water pumping cylinder through the water pumping pipe and then is sent into the water delivery hose through the water delivery pipe, and because the initial states of the two pistons are one high and one low, the two pistons can perform opposite actions, namely one piston moves downwards, and the other piston moves upwards, one water pumping cylinder performs water pumping action while the other water pumping cylinder performs water drainage action, then the two water pumping cylinders perform water drainage action and exchange the actions, and the water delivery to the water delivery hose can be continuously performed in a circulating reciprocating manner; meanwhile, the screw rod can be driven to rotate by starting the forward and reverse rotating motor, so that the main spray head can be driven to travel along the screw rod, and large-area spraying is realized. The invention carries out spraying operation through the walking spray head mechanism, and can realize continuous water supply while driving the spray head mechanism to walk through the linked related driving mechanism, thereby having good spraying effect.

(2) The screw rod sliding block is also connected with a lifting adjusting mechanism, the lifting adjusting mechanism comprises two upright posts which are oppositely and vertically fixed on the ground, a hydraulic cylinder which is longitudinally connected at the upper ends of the upright posts and a lifting plate which is fixed at the top of an output shaft of the hydraulic cylinder, a screw rod is connected between the two lifting plates, a driving shaft which is connected with a forward and reverse rotating motor and the screw rod are in transmission connection through three first belt pulleys and a first transmission belt which is jointly encircled on the three belt pulleys, a sliding rod which can only transversely move penetrates through the axis of one belt pulley, and the sliding rod is connected with the screw rod through an upper pull rod and a lower pull rod which are hinged together. During the application, can be according to the height of crops in the big-arch shelter, through the height of pneumatic cylinder adjustment lifter plate, adjust shower nozzle mechanism's height promptly, and in the adjustment process, reciprocating of lead screw, through articulated pull-up rod and pull-down lever push-and-pull slide bar for the slide bar drives the first band pulley along sliding tray lateral shifting on it, makes first drive belt be in the tensioning state all the time, in order to ensure the linkage relation between actuating lever and the drive shaft. The height of the nozzle mechanism can be adjusted according to the plant height of crops, the linkage relation between related driving mechanisms is not influenced, and the application range is wide.

(3) The invention can also be provided with a sprinkling irrigation mechanism which comprises a flat frame plate arranged between ridges, an underground water pipe and an auxiliary spray head arranged below the flat frame plate, wherein the auxiliary spray head is communicated with the underground water pipe through a flexible hose, and the flat frame plate is provided with a through hole positioned right above the auxiliary spray head. When the auxiliary spraying device is used, water is poured into the underground water pipe, the auxiliary spraying head can be jacked to the upper portion of the flat frame plate and spray water, and the auxiliary spraying head can automatically descend and reset after spraying is finished. The sprinkling irrigation mechanism can avoid damage to corresponding pipelines when working such as loosening soil and the like, and can also avoid hindering the working such as loosening soil and the like; the spray pipe mechanism can move in a lifting manner, so that related workers can be prevented from being stumbled; the sprinkling irrigation mechanism can realize sprinkling irrigation on the lower parts of crops, and can solve the problem that the root systems of the crops with luxuriant branches and leaves are difficult to absorb water under the sprinkling action.

In conclusion, the traveling sprayer mechanism is used for spraying, continuous water supply of the water supply mechanism can be realized while the sprayer mechanism is driven to travel, the structural relevance is strong, the height of the sprayer mechanism can be adjusted according to the plant height of crops, the linkage relation among related driving mechanisms is not influenced, the spraying effect is good, and the application range is wide; in addition, the sprinkling irrigation mechanism can realize sprinkling irrigation on the lower parts of the crops, and the problem that the root systems of the crops with more luxuriant branches and leaves are difficult to absorb water under the sprinkling action can be solved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a side view of the drive connection between the drive rod 33 and the drive shaft 13;

FIG. 3 is a schematic view of the drive shaft 13 without the counter-rotating motor 14 connected thereto and its related structure;

FIG. 4 is an enlarged schematic view of the structure of the main nozzle 20;

FIG. 5 is an enlarged view of the internal structure of the sub-showerhead 53 and the structure of the associated connecting parts;

FIG. 6 is a plan view showing the internal structure of the sub-shower 53;

FIG. 7 is an enlarged view of the structure of the area A in FIG. 6;

figure 8 is a side view of two suction cylinders 4 and their driving structure.

Reference numerals: 1. a column; 2. a hydraulic cylinder; 3. a lifting plate; 4. a water pumping cylinder; 5. a piston; 6. a water pumping pipe; 7. a water supply pipe; 8. a port; 9. a water delivery hose; 10. a one-way valve; 11. a push-pull rod; 12. rotating the disc; 13. a drive shaft; 14. a positive and negative rotation motor; 15. a support plate; 16. a right vertical plate; 17. a bearing; 18. a lead screw; 19. a slider; 20. a main spray head; 21. a drive cartridge; 22. a nozzle cavity; 23. driving a fan; 24. a partition plate; 25. flushing the hole; 26. a water outlet hard pipe; 27. a short connecting rod; 28. a side spout; 29. a middle nozzle; 30. a top plate; 31. a slide rail; 32. a limiting block; 33. a drive rod; 34. a left vertical plate; 35. a sliding groove; 36. a slide bar; 37. a first pulley; 38. a first drive belt; 39. an upper pull rod; 40. a lower pull rod; 41. a second pulley; 42. a second belt; 43. a water storage box; 44. a connecting pipe; 45. an overflow valve; 46. a base plate; 47. a second spring; 48. a roller; 49. sealing the rubber gasket; 50. a flat frame plate; 51. an underground water pipe; 52. a flexible hose; 53. a secondary spray head; 531. a housing; 532. a switch plate; 533. a transverse chute; 534. a longitudinal chute; 535. a first spring; 536. a water jet; 537. a connecting rod; 538. a convex plate; 539. an iron block; 54. a through hole; 541. a magnet; 55. a water pipe joint; 56. an on-off valve; 57. a limiting sleeve; 58. a guide rod.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples.

Examples

As shown in figure 1, the agricultural spraying device comprises a lifting adjusting mechanism, a water supply mechanism and a nozzle mechanism,

the lifting adjusting mechanism comprises two upright posts 1 which are oppositely and vertically fixed on the ground, a hydraulic cylinder 2 which is longitudinally connected to the upper ends of the upright posts 1, and a lifting plate 3 which is fixed at the top of an output shaft of the hydraulic cylinder 2;

as shown in fig. 1 and 8, the water supply mechanism includes two parallel water pumping cylinders 4, pistons 5 arranged in the water pumping cylinders 4, water pumping pipes 6 communicated with the bottoms of the water pumping cylinders 4, water delivery pipes 7 communicated with one side of the lower portions of the water pumping cylinders 4, and a driving assembly for driving the two pistons 5 to alternately move, a through hole 8 through which the upper end of the piston 5 just passes is formed in the top of each water pumping cylinder 4, in an initial state, the piston 5 in one water pumping cylinder 4 is located at the inner bottom thereof, and the piston 5 in the other water pumping cylinder 4 is located at the inner top thereof; the two water delivery pipes 7 are communicated with the same water delivery hose 9, one end of the water pumping pipe 6, which is connected with the water pumping barrel 4, is provided with a one-way valve 10 which is opened towards the water pumping barrel 4, and one end of the water delivery pipe 7, which is connected with the water pumping barrel 4, is provided with a one-way valve 10 which is opened towards the water delivery hose 9;

the driving assembly comprises a push-pull rod 11 longitudinally connected to the upper end of the piston 5, a rotating disc 12 connected to the upper end of the push-pull rod 11, and a driving shaft 13 connected to the center of one side of the rotating disc 12 opposite to the piston 5, wherein the other end of one driving shaft 13 is connected with a forward-reverse motor 14, the bottom of the forward-reverse motor 14 supports a supporting plate 15 connected to the top of the side pillar, the bottom of the hydraulic cylinder 2 is mounted on the supporting plate 15, the two driving shafts 13 are connected through a belt transmission structure, as shown in fig. 3, a right vertical plate 16 is fixed on one side of the supporting plate 15 facing the rotating disc 12, one end of the driving shaft 13 opposite to the rotating disc 12, which is not connected with the forward-reverse motor 14, is connected to the right vertical plate 16 through a bearing 17, a hinge shaft transversely penetrating through the upper end of the push-pull rod 11 is fixed at the eccentric position on one, limiting stop blocks are fixedly sleeved on the two end sides of the hinge shaft;

as shown in fig. 8, the belt transmission structure includes second belt wheels 41 respectively fixedly sleeved on the two driving shafts 13 and second transmission belts 42 jointly encircling the two second belt wheels 41, the second belt wheels 41 on the driving shafts 13 connected with the forward and reverse rotation motor 14 are located on one side of the first belt wheel 37 on the driving shaft 13 facing the rotating disc 12 (after the forward and reverse rotation motor 14 is started, the second belt wheels 41 on the driving shafts 13 can be directly driven to rotate, and then the second belt wheels 41 on the other driving shaft 13 are driven to rotate by the second transmission belts 42, so that the other driving shaft 13 can be driven to rotate);

the spray head mechanism comprises a main spray head 20 which is positioned at a high position and connected with the upper end of a water supply hose 9 and a screw rod 18 and slider 19 structure which drives the main spray head 20 to horizontally move, the screw rod 18 and slider 19 structure comprises a screw rod 18 which is horizontally arranged, a slider 19 which is slidably sleeved on the screw rod 18, a top plate 30 which is horizontally connected between the lifting plates 3 at two sides, a slide rail 31 which is arranged at the bottom of the top plate 30 and is parallel to the screw rod 18 and a limiting block 32 which is slidably connected in the slide rail 31 and fixed on the slider 19, one end of the screw rod 18 is connected with a driving rod 33, the other ends of the screw rod 18 and the driving rod 33 are respectively connected to the lifting plates 3 at the corresponding sides through bearings 17, and one end of the water supply; as shown in fig. 3, a left vertical plate 34 opposite to the right vertical plate 16 is fixed on one side of the supporting plate 15 opposite to the rotating disc 12 corresponding to the right vertical plate 16, sliding grooves 35 extending transversely are respectively formed on the opposite surfaces of the left vertical plate 34 and the right vertical plate 16, a sliding rod 36 capable of moving transversely along the sliding groove 35 is connected between the two sliding grooves 35, as shown in fig. 2, first belt pulleys 37 are fixedly sleeved on the sliding rod 36, the driving rod 33 and the driving shaft 13 connected with the forward and reverse rotating motor 14, three first belt pulleys 37 jointly encircle a first driving belt 38, an upper pull rod 39 extending downwards is rotatably sleeved on the driving rod 33, and a lower pull rod 40 hinged to the lower end of the upper pull rod 39 is rotatably sleeved on the sliding rod 36.

In this embodiment, as shown in fig. 4, the main nozzle 20 includes a cylindrical driving case 21 and a nozzle chamber 22 rotatably connected to the bottom of the driving case 21, the top of the driving box 21 is communicated with the water supply hose 9, a driving fan 23 positioned in the middle and a partition plate 24 horizontally arranged above the driving fan 23 are arranged in the driving box 21, the peripheral sides of the partition plate 24 are fixed on the inner wall of the driving box 21 in an attaching manner, and the edge of the partition plate 24 is provided with flushing holes 25 which are obliquely arranged and correspond to the fan blades of the driving fan 23 one by one, the extension line of the flushing hole 25 passes through the fan blades of the driving fan 23, the bottom in the driving box 21 is rotationally connected with a water outlet hard pipe 26 which is longitudinally arranged through a bearing 17, at least two short connecting rods 27 connected to the upper end of the water outlet hard pipe 26 are fixed on the periphery of the bottom of the central column of the driving fan 23 at equal intervals along the periphery thereof; the shower nozzle cavity 22 is connected to the lower end of the water outlet hard pipe 26, the side nozzles 28 are uniformly arranged on the shower nozzle cavity 22 along the peripheral sides of the shower nozzle cavity, and the middle nozzle 29 is uniformly connected to the bottom of the shower nozzle cavity 22. The water body enters the driving box 21 and then rushes out through the scouring holes 25 on the partition plate 24, and is beaten on the fan blades of the driving fan 23, so that the driving fan 23 can be pushed to rotate, then the water body falls down to enter the water outlet hard pipe 26 from the gap beside the short connecting rod 27, and then enters the nozzle cavity 22, and finally is sprayed out from the side nozzle 28 and the middle nozzle 29, meanwhile, the rotation of the driving fan 23 drives the water outlet hard pipe 26 to rotate through the short connecting rod 27, so that the nozzle cavity 22 can be driven to rotate, so that the water body sprayed out from the side nozzle 28 and the middle nozzle 29 can cover a complete circular area, the water body in the nozzle cavity 22 can rotate to generate centrifugal force, the distance which the water body sprayed out from the side nozzle 28 can reach can be enlarged, and the spraying effect of the spraying mechanism can be improved.

In this embodiment, as shown in fig. 4, one end of the water delivery hose 9 connected to the main nozzle 20 is connected to a water storage box 43 fixedly connected to the slider 19, the water storage box 43 is communicated with the top of the driving box 21 through a connecting pipe 44, and the connecting pipe 44 is provided with a relief valve 45. One end of the water delivery hose 9 connected with the main nozzle 20 is connected with a water storage box 43 fixedly connected with the slide block 19, the water storage box 43 is communicated with the top of the driving box 21 through a connecting pipe 44, and the connecting pipe 44 is provided with an overflow valve 45. The water supplied by the water supply hose 9 is firstly accumulated in the water storage box 43, and when the water pressure acting on the lower overflow valve 45 is enough, the overflow valve 45 can be opened, so that more water can enter the driving box 21 at the beginning, and the rotation of the driving fan 23 can be ensured.

In this embodiment, as shown in fig. 1, a sprinkling irrigation mechanism is arranged right below the nozzle mechanism, and the sprinkling irrigation mechanism comprises a flat frame plate 50 laid between ridges, an underground water pipe 51 horizontally arranged below the flat frame plate 50 and parallel to the screw rod 18, telescopic hoses 52 arranged at equal intervals along the length direction of the underground water pipe 51 and communicated with the upper part of the underground water pipe 51, auxiliary nozzles 53 connected to the upper ends of the telescopic hoses 52, and longitudinal guide components arranged at the sides of the auxiliary nozzles 53;

the flat frame plate 50 is provided with through holes 54 which correspond to the auxiliary nozzles 53 one by one and are positioned right above the auxiliary nozzles 53, one end of the underground water pipe 51 extends upwards to the upper part of the ground and is connected with a water pipe joint 55, the other end of the underground water pipe 51 is closed, one end of the underground water pipe 51, which is connected with the water pipe joint 55, is provided with a switch valve 56, and one end of the water pumping pipe 6, which is back to the water pumping barrel 4, is communicated with one end of the underground water pipe 51, which is provided with the switch valve 56;

as shown in fig. 5, 6 and 7, the sub-sprayer 53 includes a housing 531 in a square structure, a switch board 532 horizontally disposed in the housing 531, a transverse sliding groove 533 and a longitudinal sliding groove 534 disposed on the inner wall of the housing 531 corresponding to the front and rear sides of the switch board 532, a first spring 535 connecting the top of the housing 531 and one end of the switch board 532, and a water spray 536 disposed on the upper portion of the sidewall of the housing 531, wherein the upper end of the longitudinal sliding groove 534 is connected to one end of the transverse sliding groove 533 corresponding to the first spring 535, the front and rear sides of the switch board 532 connected to the top of one end of the first spring 535 are respectively fixed with a connecting rod 537 slidably connected to the corresponding longitudinal sliding groove 534, the front and rear sides of the top of one end of the switch board 532 opposite to the side of the first spring 535 are respectively fixed with a connecting rod 537 slidably connected to the corresponding transverse sliding groove 533, the peripheries of the switch board 532 are all, the front side and the rear side of the switch plate 532 are fixed with convex plates 538 which are just inserted into the longitudinal sliding groove 534 corresponding to the position of the longitudinal sliding groove 534, an iron block 539 is arranged inside the end of the switch plate 532 connected with the first spring 535, and a switch convex block with a built-in magnet 541 is fixed on the side wall of the through hole 54 corresponding to the side of the iron block 539;

the longitudinal guide assembly includes a stop collar 57 fixed to two opposite sides of the bottom end of the sub-sprinkler 53 and a guide rod 58 longitudinally fixed to the underground water pipe 51 and penetrating the stop collar 57.

When the device is used, the switch valve 56 is opened to enable water to enter the underground water pipe 51 and then enter the auxiliary spray head 53 along the telescopic hose 52, because of the blocking effect of the switch plate 532, the water can push the auxiliary spray head 53 to rise and enable the telescopic hose 52 to be stretched, the auxiliary spray head 53 moves longitudinally and upwards to pass through the through hole 54 on the flat frame plate 50, in the process, the iron block 539 in the switch plate 532 is subjected to the magnetic attraction force of the magnet 541 on the side wall of the through hole 54, so that one side of the switch plate 532, where the iron block 539 is arranged, stops rising, the switch plate 532 on the opposite side of the switch plate keeps rising along with the auxiliary spray head 53, at the moment, the first spring starts to be stretched, the connecting rod 537 on the side where the first spring 535 is located moves downwards relatively along the longitudinal chute 534, and the connecting rod 537 on the opposite side of the first spring is moved towards the side where the longitudinal chute 534 along the transverse chute 533, namely, and is sprayed out from the water spray opening 536 to realize the sprinkling irrigation on the lower part of the crops so as to promote the effect of supplementing the moisture to the crops; after the sprinkling irrigation is finished, water supply is stopped, under the reset action of the first spring 535 and the gravity action of the auxiliary spray nozzle 53, the shell 531 of the auxiliary spray nozzle 53 moves downwards, one end of the switch plate 532, which is back to the iron block 539, is driven to move downwards, the connecting rod 537 on the side moves along the transverse sliding groove 533 to one side, which is back to the iron block 539, the switch plate 532 gradually recovers to the horizontal state, the channel in the auxiliary spray nozzle 53 is blocked, the iron block 539 is separated from the action range of the magnet 541 along with the continuous descending of the auxiliary spray nozzle 53, and the auxiliary spray nozzle 53 returns to the initial state. The sprinkling irrigation mechanism is arranged among the ridges, so that damage to corresponding pipelines during operation such as soil loosening and the like can be avoided, and operation such as soil loosening and the like can be prevented from being hindered; and the spray pipe mechanism can move in a lifting manner, so that related workers can be prevented from being stumbled.

In this embodiment, the bottom of the flexible hose 52 is fixedly sleeved with the bottom plate 46, and the second spring 47 is connected between the bottom of the sub-nozzle 53 and the bottom plate 46. In the process that the water flow impacts to push the auxiliary spray head 53 to ascend, the second spring 47 is stretched; when the water supply is stopped, the auxiliary nozzle 53 will start to descend under the action of gravity, and the resetting action of the second spring 47 can assist in pulling the auxiliary nozzle 53 to descend and reset.

In this embodiment, the connecting rods 537 are rotatably connected to the rollers 48 at the ends thereof located in the corresponding chutes. The sliding between the connecting rod 537 and the corresponding runner is converted into the rolling of the roller 48, so that the movement of the connecting rod 537 along the corresponding runner is lighter.

In this embodiment, a sealing rubber pad 49 corresponding to the switch plate 532 in the initial state is fixed on the inner wall of the housing 531 at a height position corresponding to the switch plate 532, except for the convex plate 538, and the sealing rubber pad 49 is fixed on the corresponding side of the convex plate 538 contacting with the longitudinal sliding groove 534. The sealing rubber pad 49 is provided to ensure the sealing property between the lower peripheral side of the switch plate 532 and the inner wall of the housing 531 in the initial state, thereby ensuring that the sub-shower 53 can be pushed up by the inflow water.

The agricultural spraying device has the specific action principle that:

firstly, according to the height of crops in the greenhouse, the height of the lifting plate 3 is adjusted through the hydraulic cylinder 2, so that the nozzle mechanism is adjusted to be at an appropriate height, in the adjustment process, the driving rod 33 moves up and down along with the driving rod, the sliding rod 36 is pushed and pulled through the upper pull rod 39 and the lower pull rod 40 which are hinged, the sliding rod 36 drives the first belt wheel 37 on the sliding rod to move transversely along the sliding groove 35, and the first driving belt 38 is always in a tensioning state so as to ensure the linkage relation between the driving rod 33 and the driving shaft 13; then the water pumping pipe 6 is communicated with a water source, the forward and reverse rotation motor 14 is started, one driving shaft 13 can be directly driven to rotate, the other driving shaft 13 is driven to rotate through a belt transmission structure, the two rotating disks 12 rotate together, the pistons 5 are driven to move up and down through the push-pull rod 11, under the auxiliary action of the corresponding one-way valve 10, the water is pumped into the water pumping cylinder 4 through the water pumping pipe 6 and then is sent into the water sending hose 9 through the water sending pipe 7, and the two pistons 5 can perform opposite actions because the initial states of the two pistons 5 are high and low, namely one piston 5 moves downwards, and the other piston 5 moves upwards, so that when one water pumping cylinder 4 performs water pumping action, the other water pumping cylinder 4 performs water draining action, then the actions of the two are exchanged, and the operation is circulated in such a way, and the water can be continuously sent into the water sending hose 9;

the water is delivered to the water storage box 43 along the water delivery hose 9, then enters the driving box 21 through the connecting pipe 44 to drive the driving fan 23 to rotate, the driving nozzle cavity 22 is driven to rotate, the water enters the nozzle cavity 22 and is finally sprayed out from the side nozzle 28 and the middle nozzle 29, a relatively large-range and relatively comprehensive circular spraying area can be formed, when spraying, the rotation of the driving shaft 13 is transmitted to the driving rod 33 through the first belt wheel 37 and the first driving belt 38, so that the screw rod 18 is driven to rotate, the limiting block 32 can only horizontally move along the sliding rail 31, so that the sliding block 19 horizontally moves along the screw rod 18, the water storage box 43 and the main nozzle 20 are driven to horizontally move, thereby the spraying to the crops in rows can be realized, the spraying structure is simple, and a relatively good spraying effect can be achieved. And no matter the rotating disc 12 rotates forwards or backwards, the water supply mechanism can be driven to realize the continuous water supply function. And after spraying is finished, stopping water supply and turning off the forward and reverse rotating motor 14.

When crops branches and leaves are comparatively luxuriant, the root system of crops is difficult to absorb moisture under the action of spraying, at this moment, start sprinkling irrigation mechanism: connecting a water pipe joint 55 connected with one end of an underground water pipe 51 with a water supply pipe communicated with a water source, then opening a switch valve 56, enabling water to enter the underground water pipe 51, then entering the auxiliary spray head 53 along the telescopic hose 52, and because of the plugging effect of the switch plate 532, the water is accumulated in the auxiliary spray head 53 and the telescopic hose 52 below the switch plate 532, and along with the continuous feeding of the water, pushing the auxiliary spray head 53 to rise and enabling the telescopic hose 52 and the second spring 47 to be stretched, and matching with the limiting effect that the limiting sleeve 57 can only slide along the guide rod 58, enabling the auxiliary spray head 53 to longitudinally move upwards and to pass through the through hole 54 on the flat plate 50, in the process, the iron blocks 539 in the switch plate 532 are subjected to the magnetic attraction force of the magnets 541 on the side wall of the through hole 54, so that the side of the switch plate 532 with the iron blocks 539 in the switch plate is temporarily risen, and the switch plate 532 on, the connecting rod 537 on the side of the first spring 535 moves relatively downwards along the longitudinal sliding chute 534, while the connecting rod 537 on the opposite side moves towards the side of the longitudinal sliding chute 534 along the transverse sliding chute 533, namely the switch board 532 is opened, so that water can enter above the switch board 532 and is sprayed out from the water spraying opening 536 to realize the sprinkling irrigation on the lower part of the crop. During the sprinkling irrigation, the opening state of the switch plate 532 can be kept by continuously supplying water, after the sprinkling irrigation is finished, the switch valve 56 is closed, the water supply is stopped, the auxiliary spray nozzle 53 starts to descend under the action of gravity and the resetting action of the second spring 47, in the process, the iron block 539 in the switch plate 532 is subjected to the magnetic attraction force of the magnet 541 on the side wall of the through hole 54, so that one side of the switch plate 532, which is internally provided with the iron block 539, stops ascending temporarily, the switch plate 532 on the opposite side of the switch plate is still descended continuously, at the moment, the first spring 535 starts to reset, the connecting rod 537 on the side of the first spring 535 relatively moves upwards along the longitudinal sliding groove 534, the connecting rod 537 on the side of the first spring 535 moves towards one side of the longitudinal sliding groove 534 along the transverse sliding groove 533, namely, the switch plate 532 gradually restores to the horizontal state, the blockage of the channel in the auxiliary spray nozzle 53 is realized, and the iron block 539 is separated from, the sub-showerhead 53 returns to the initial state.

According to the invention, the spraying operation is carried out through the walking sprayer mechanism, continuous water supply can be realized while the sprayer mechanism is driven to walk through the linked related driving mechanism, the height of the sprayer mechanism can be adjusted according to the plant height of crops, the linkage relation between the related driving mechanisms is not influenced, the spraying effect is good, and the application range is wide; in addition, the sprinkling irrigation mechanism can realize sprinkling irrigation on the lower parts of the crops, and the problem that the root systems of the crops with more luxuriant branches and leaves are difficult to absorb water under the sprinkling action can be solved.

It should be understood by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be used as a limitation of the present invention, and that changes and modifications to the above embodiments are within the scope of the claims of the present invention as long as they are within the spirit and scope of the present invention.

Claims

1. An agricultural spraying device is characterized by comprising a lifting adjusting mechanism, a water supply mechanism and a spray head mechanism,

the lifting adjusting mechanism comprises two upright posts (1) which are oppositely and vertically fixed on the ground, a hydraulic cylinder (2) which is longitudinally connected to the upper ends of the upright posts (1), and a lifting plate (3) which is fixed at the top of an output shaft of the hydraulic cylinder (2);

the water supply mechanism comprises two water pumping cylinders (4) which are arranged in parallel, pistons (5) arranged in the water pumping cylinders (4), water pumping pipes (6) communicated with the bottoms of the water pumping cylinders (4), water delivery pipes (7) arranged on one side of the lower portions of the water pumping cylinders (4) and a driving assembly for driving the two pistons (5) to alternately act, through holes (8) which are just used for the upper ends of the pistons (5) to penetrate through are formed in the tops of the water pumping cylinders (4), in an initial state, the piston (5) in one water pumping cylinder (4) is located at the inner bottom of the water pumping cylinder, and meanwhile, the piston (5) in the other water pumping cylinder (4) is located at the inner top of the; the two water delivery pipes (7) are communicated with the same water delivery hose (9), one end, connected with the water pumping barrel (4), of the water pumping pipe (6) is provided with a one-way valve (10) opened towards the water pumping barrel (4), and one end, connected with the water pumping barrel (4), of the water delivery pipe (7) is provided with a one-way valve (10) opened towards the water delivery hose (9);

the driving assembly comprises a push-pull rod (11) longitudinally connected to the upper end of the piston (5), a rotating disc (12) connected to the upper end of the push-pull rod (11) and a driving shaft (13) connected to the center of one side of the rotating disc (12) back to the piston (5), wherein the other end of one driving shaft (13) is connected with a forward and reverse rotating motor (14), a supporting plate (15) connected to the top of the side pillar (1) is supported at the bottom of the forward and reverse rotating motor (14), the bottom of the hydraulic cylinder (2) is installed on the supporting plate (15), the two driving shafts (13) are connected through a belt transmission structure, a right vertical plate (16) is fixed on one side, facing the rotating disc (12), of the supporting plate (15), the end, back to the rotating disc (12), of the driving shaft (13) which is not connected with the forward and reverse rotating motor (14), a hinge shaft transversely penetrating through the upper end of the push-pull rod (11) is fixed at the eccentric position of one side of the rotating disc (12) connected with the push-pull rod (11), the lower end of the push-pull rod (11) and the upper end of the piston (5) jointly penetrate through the hinge shaft, and limit stop blocks are fixedly sleeved on the two end sides of the hinge shaft;

the spray head mechanism comprises a main spray head (20) which is positioned at a high position and is connected with the upper end of the water supply hose (9) and a screw rod slide block structure which drives the main spray head (20) to horizontally move, the screw rod sliding block structure comprises a screw rod (18) which is horizontally arranged, a sliding block (19) which is sleeved on the screw rod (18) in a sliding way, a top plate (30) which is horizontally connected between the lifting plates (3) at two sides, a sliding rail (31) which is arranged at the bottom of the top plate (30) and is parallel to the screw rod (18), and a limiting block (32) which is connected in the sliding rail (31) in a sliding way and is fixed on the sliding block (19), one end of the screw rod (18) is connected with a driving rod (33), the other ends of the screw rod (18) and the driving rod (33) are respectively connected to the lifting plate (3) on the corresponding side through a bearing (17), one end of the water supply hose (9) connected with the main spray head (20) is fixedly connected with the sliding block (19); a left vertical plate (34) which is arranged opposite to the right vertical plate (16) is fixed on one side of the supporting plate (15) opposite to the rotating disc (12) and corresponding to the right vertical plate (16), the opposite surfaces of the left vertical plate (34) and the right vertical plate (16) are both provided with a sliding groove (35) which extends transversely, and a sliding rod (36) capable of moving transversely along the sliding groove (35) is connected between the two sliding grooves (35), a first belt wheel (37) is fixedly sleeved on the sliding rod (36), the driving rod (33) and the driving shaft (13) connected with the forward and reverse rotating motor (14), and three of the first pulleys (37) jointly encircle a first belt (38), an upper pull rod (39) extending downwards is rotatably sleeved on the driving rod (33), the sliding rod (36) is rotatably sleeved with a lower pull rod (40) hinged with the lower end of the upper pull rod (39).

2. An agricultural spraying device according to claim 1, wherein the belt transmission structure comprises second belt pulleys (41) fixedly sleeved on the two driving shafts (13) respectively and a second transmission belt (42) jointly wound around the two second belt pulleys (41), and the second belt pulley (41) on the driving shaft (13) connected with the forward and reverse motor (14) is positioned on one side of the first belt pulley (37) on the driving shaft (13) facing the rotating disc (12).

3. The agricultural spraying device according to claim 1, wherein the main nozzle (20) comprises a cylindrical driving box (21) and a nozzle cavity (22) rotatably connected to the bottom of the driving box (21), the top of the driving box (21) is communicated with the water supply hose (9), a driving fan (23) positioned in the middle and a horizontally arranged partition plate (24) positioned above the driving fan (23) are arranged in the driving box (21), the peripheral sides of the partition plate (24) are respectively fixed on the inner wall of the driving box (21) in an attached manner, flushing holes (25) which are in one-to-one correspondence with and inclined arrangement with the fan blades of the driving fan (23) are formed in the edge of the partition plate (24), the extension lines of the flushing holes (25) penetrate through the fan blades of the driving fan (23), and a longitudinally arranged water outlet hard pipe (26) is rotatably connected to the bottom in the driving box (21) through a bearing (17), at least two short connecting rods (27) connected to the upper end of the water outlet hard pipe (26) are fixed on the periphery of the bottom of the central column of the driving fan (23) at equal intervals along the periphery of the central column; the shower nozzle cavity (22) is connected to the lower end of the water outlet hard pipe (26), side nozzles (28) are uniformly formed in the shower nozzle cavity (22) along the peripheral sides of the shower nozzle cavity, and middle nozzles (29) are uniformly connected to the bottom of the shower nozzle cavity (22).

4. The agricultural spraying device according to claim 3, wherein one end of the water delivery hose (9) connected with the main nozzle (20) is connected with a water storage box (43) fixedly connected with the sliding block (19), the water storage box (43) is communicated with the top of the driving box (21) through a connecting pipe (44), and an overflow valve (45) is arranged on the connecting pipe (44).

5. The agricultural spraying device according to any one of claims 1 to 4, wherein a sprinkling irrigation mechanism is arranged under the nozzle mechanism, and the sprinkling irrigation mechanism comprises a flat frame plate (50) laid among ridges, an underground water pipe (51) horizontally arranged under the flat frame plate (50) and parallel to the screw rod (18), telescopic hoses (52) arranged at equal intervals along the length direction of the underground water pipe (51) and communicated with the upper part of the underground water pipe (51), auxiliary nozzles (53) connected to the upper ends of the telescopic hoses (52), and longitudinal guide components arranged beside the auxiliary nozzles (53);

the horizontal frame plate (50) is provided with through holes (54) which correspond to the auxiliary nozzles (53) one by one and are located right above the auxiliary nozzles (53), one end of the underground water pipe (51) extends upwards to the upper part of the ground and is connected with a water pipe joint (55), the other end of the underground water pipe (51) is closed, one end of the underground water pipe (51) connected with the water pipe joint (55) is provided with a switch valve (56), and one end of the water pumping pipe (6) back to the water pumping cylinder (4) is communicated with one end of the underground water pipe (51) provided with the switch valve (56);

the auxiliary spray head (53) comprises a shell (531) in a square structure, a switch plate (532) horizontally arranged in the shell (531), a transverse chute (533) and a longitudinal chute (534) which are arranged on the inner wall of the shell (531) corresponding to the front side and the rear side of the switch plate (532), a first spring (535) connecting the top of the shell (531) and one end of the switch plate (532), and a water spray opening (536) arranged on the upper part of the side wall of the shell (531), wherein the upper end of the longitudinal chute (534) is communicated with one end of the transverse chute (533) corresponding to the side where the first spring (535) is arranged, the front side and the rear side of the top of one end of the switch plate (532) connected with the first spring (535) are respectively fixedly provided with a connecting rod (537) which is slidably connected into the longitudinal chute (534) on the corresponding side, and the front side and the rear side of the top of one end of the switch plate (532) back to the side where the first spring (535, the periphery of the switch plate (532) is attached to the inner wall of the shell (531), the front side and the rear side of the switch plate (532) are fixed with convex plates (538) which are just inserted into the longitudinal sliding grooves (534) at positions corresponding to the longitudinal sliding grooves (534), an iron block (539) is arranged inside the end, connected with the first spring (535), of the switch plate (532), and a switch convex block with a built-in magnet (541) is fixed on the side wall, corresponding to the iron block (539), of the through hole (54);

the longitudinal guide assembly comprises a limiting sleeve (57) fixed on two opposite sides of the bottom end of the auxiliary spray head (53) and a guide rod (58) longitudinally fixed on the underground water pipe (51) and penetrating through the limiting sleeve (57).

6. An agricultural spraying device according to claim 5, wherein the bottom of the telescopic hose (52) is fixedly sleeved with a bottom plate (46), and a second spring (47) is connected between the bottom of the auxiliary spray head (53) and the bottom plate (46).

7. An agricultural spraying device according to claim 5, wherein the connecting rods (537) are rotatably connected to rollers (48) at each end located within the respective runner.

8. An agricultural spraying device according to claim 5, wherein the inner wall of the housing (531) is fixed with a sealing rubber gasket (49) corresponding to the switch plate (532) in the initial state at a height position corresponding to the switch plate (532) except the convex plate (538), and the sealing rubber gasket (49) is fixed on the corresponding side surface of the convex plate (538) contacting with the longitudinal sliding groove (534).