Spraying equipment for pest control of plants and use method of spraying equipment

Abstract

The invention discloses spraying equipment for pest control of plants and a using method thereof, the spraying equipment comprises a bottom plate, a liquid inlet cylinder and a liquid outlet cylinder arranged at the bottom end of the liquid inlet cylinder, water outlet holes are formed in the surface of the liquid outlet cylinder, a filter screen is arranged at the bottom end of the liquid inlet cylinder, and a sealed cleaning mechanism is arranged on the surface of the liquid inlet cylinder; the sealing cleaning mechanism comprises a sealing assembly arranged on the surface of the liquid inlet cylinder in a sleeving mode and a cleaning assembly, the sealing assembly is used for sealing the water outlet hole, and the cleaning assembly is used for conducting back flushing cleaning on the filter screen; the invention relates to the technical field. According to the spraying equipment for plant pest control and the using method thereof, through the arrangement of the sealing assembly, the water outlet holes can be automatically sealed when direct spraying operation is conducted on plants, and when the spraying range needs to be enlarged, the water spraying pipe is automatically closed, and the water outlet holes are controlled to be opened; the spraying range can be freely switched, the spraying effect of two modes of precise direct spraying can be achieved, and different use requirements are met.

Description

Technical Field

[0001] The invention relates to the technical field, and in particular to a spraying device for controlling plant pests and a use method thereof. Background Art

[0002] Plant disease and pest control, plant disease and pest diagnosis and control technology, are important measures to reduce crop damage and promote crop production.

[0003] Spraying equipment is a tool used to spray liquid agents such as pesticides, fertilizers and herbicides.

[0004] In order to reduce the pest control of plants, spraying equipment is usually used in the prior art. According to the patent application number CN202223289708.2, a pesticide spraying device for crop pest control includes a bottom plate and a storage tank fixedly connected to one side of the top of the bottom plate, the front and back sides of one side of the top of the bottom plate are fixedly connected with electric push rods, a fixed plate is fixedly connected between the extended ends of the two electric push rods, and a spraying adjustment mechanism is arranged on the top of the fixed plate;

[0005] In the above patent, the liquid medicine is sprayed out through the water spray hole and the spray head to achieve the prevention and control of diseases and insect pests. The spraying method is relatively simple and is not suitable for direct spraying operations on plant roots. The liquid medicine is difficult to spray accurately on the root system. The prior art cannot switch the spray mode freely, and the particles precipitated in the liquid medicine can easily cause blockage inside the nozzle and are difficult to clean. Therefore, in view of the above shortcomings, the present invention makes the following improvements. Summary of the invention

[0006] In view of the deficiencies in the prior art, the present invention provides a spraying device for plant pest control and a method of using the same, which solves the problems mentioned in the background technology.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a spraying device for plant pest control, comprising a bottom plate, a liquid inlet cylinder and a liquid outlet cylinder arranged at the bottom end of the liquid inlet cylinder, and a water outlet hole is opened on the surface of the liquid outlet cylinder, a filter screen is arranged at the bottom end of the liquid inlet cylinder, and a sealing cleaning mechanism is arranged on the surface of the liquid inlet cylinder;

[0008] The sealing and cleaning mechanism comprises a sealing component and a cleaning component sleeved on the surface of the liquid inlet cylinder, wherein the sealing component is used to seal the water outlet hole, and the cleaning component is used to backwash and clean the filter screen;

[0009] The sealing cleaning mechanism also includes a sleeve slidably arranged on the surface of the liquid inlet cylinder, and a driving member is arranged on the surface of the sleeve, and the driving member is used to adjust the upper and lower positions of the sealing component and the cleaning component.

[0010] Preferably, the sealing assembly includes a fixed ring sleeved on the surface of the liquid inlet cylinder, and the surface of the fixed ring is rotatably connected to a rotating ring, a sealing column adapted to the water outlet is movably arranged inside the fixed ring, one end of the sealing column is inclined, an inclined groove adapted to the sealing column is provided inside the rotating ring, a through groove adapted to the sealing column is provided inside the fixed ring, and the inner wall of the through groove is slidably connected to the surface of the sealing column through a limit block, a sliding groove is provided on the surface of the sealing column, and the inner wall of the sliding groove is fixedly connected to the surface of the limit block through a buffer spring.

[0011] Preferably, a first motor is fixedly provided on the surface of the sleeve via a connecting column, and a first gear is fixedly provided on one end of the output shaft of the first motor via a coupling, a second gear meshing with the first gear is rotatably provided on the surface of the sleeve, and the bottom surface of the second gear is fixedly connected to the top surface of the rotating ring via a support rod.

[0012] Preferably, the cleaning assembly includes a water tank and an annular water diversion box arranged on the bottom surface of the fixed ring through a vertical rod, a water outlet groove is opened inside the sealing column, the inner wall of the annular water diversion box is connected to one end of the water outlet groove through a drain pipe, and the top surface of the water tank is connected to one side of the annular water diversion box through a water supply hose.

[0013] Preferably, mounting covers are fixedly provided on both sides of the inner wall of the liquid outlet cylinder, and a plurality of fine holes are opened inside the mounting covers, a sealing rod adapted to the water outlet trough is fixedly provided on one side of the inner wall of the mounting covers, a water spray pipe is connected to the bottom end of the liquid outlet cylinder, discharge ports are opened on both sides of the surface of the liquid inlet cylinder, and valves are provided inside the discharge port and the water spray pipe.

[0014] Preferably, the driving member includes a threaded cylinder rotatably arranged on the top surface of the base plate, and a sliding block is threadedly connected to the surface of the threaded cylinder, an electric push rod is arranged on one side of the sliding block, and the protruding end of the electric push rod is fixedly connected to the surface of the sleeve.

[0015] Preferably, a liquid storage cylinder is fixedly provided on the top surface of the bottom plate via supporting legs, and the bottom end of the liquid storage cylinder is connected to the top end of the liquid inlet cylinder via a pipeline.

[0016] Preferably, an intermittent feeding mechanism is provided inside the liquid storage cylinder, and the intermittent feeding mechanism includes a feeding assembly, the feeding assembly includes a cylinder and an air storage cylinder arranged on one side of the liquid storage cylinder, one end of the air storage cylinder is connected with one end of the cylinder through an exhaust pipe, one side of the inner wall of the cylinder is connected with a movable plate through a telescopic tube, the other end of the cylinder is provided with a drainage hole, one side of the movable plate is provided with a sealing cover adapted to the drainage hole through an L-shaped rod, a piston is movably provided inside the air storage cylinder, and one side of the piston is fixedly connected to one side of the inner wall of the air storage cylinder through a clamping spring, and an extrusion rod is fixedly provided on the other side of the piston, the extrusion rod passes through the air storage cylinder and extends to the interior of the liquid storage cylinder, and a ball is fixedly provided at one end of the extrusion rod located inside the liquid storage cylinder.

[0017] Preferably, the intermittent feeding mechanism further comprises a trigger assembly, which comprises a rotating column rotatably arranged on the bottom surface of the inner wall of the liquid storage cylinder, and trigger balls are arranged on both sides of the surface of the rotating column through cross bars.

[0018] The present invention also discloses a method for using a spraying device for controlling plant pests, which specifically comprises the following steps:

[0019] S1. Water is stored inside the liquid storage cylinder, and the medicine stored inside the cylinder is intermittently discharged through the intermittent feeding mechanism, and the rotation of the rotating column is controlled to evenly mix the medicine and water;

[0020] S2. The mixed and evenly prepared insecticide is transported to the interior of the liquid inlet cylinder through a pipeline, the sealing column in the sealing assembly is controlled to move out from the inside of the water outlet, and the sealing assembly is controlled to rise, so that the water outlet is opened, and the insecticide is sprayed out from the fine pores and through the water outlet to expand the spraying range. The water outlet is closed, and the valve inside the water spray pipe is opened, so that the insecticide can penetrate into the tree crown for precise spraying.

[0021] Beneficial Effects

[0022] The present invention provides a spraying device for plant pest control and a method of using the same, which has the following beneficial effects compared with the prior art:

[0023] (1) The spraying device for plant pest control and the method of using the same can automatically seal the water outlet when performing direct spraying operation on the plant through the setting of the sealing component, and automatically close the water spray pipe and control the opening of the water outlet when the spraying range needs to be expanded. The spraying effect of the two modes of increasing the spraying range and precise direct spraying can be freely switched to meet different usage requirements.

[0024] (2) The spraying device for plant pest control and the method of using the same can backwash the filter screen with the cleaning water in the water storage tank during the process of sealing the water outlet, flush the impurities on the upper layer of the filter screen out through the discharge port, and avoid the filter screen being blocked and affecting the subsequent spraying work.

[0025] (3) The spraying device for controlling plant pests and the method of using the same can place a quantitative amount of the agent into the cylinder by setting an intermittent feeding mechanism, and during the subsequent stirring operation, the agent is intermittently discharged into the water from different liquid levels, so that the agent and water are fully mixed, the generation of sediment can be reduced, and the effect of controlling pests is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A three-dimensional diagram of the structure of the present invention;

[0027] Figure 2 It is a cross-sectional view of the liquid storage cylinder structure of the present invention;

[0028] Figure 3 It is a cross-sectional view of the rotating ring, the fixed ring, the liquid inlet cylinder and the liquid outlet cylinder structure of the present invention;

[0029] Figure 4 A top view of the internal structure of the rotating ring and the fixed ring of the present invention;

[0030] Figure 5 For the present invention Figure 2 A partial enlarged view of point A in the middle.

[0031] In the figure: 1, liquid inlet cylinder; 2, liquid outlet cylinder; 3, filter screen; 4, water outlet hole; 5, sealing assembly; 51, fixed ring; 52, rotating ring; 53, sealing column; 54, limit block; 55, buffer spring; 56, first motor; 57, first gear; 58, second gear; 6, cleaning assembly; 61, water storage tank; 62, annular water distribution box; 63, water outlet trough; 64, drain pipe; 7, driving member; 71, threaded cylinder; 72, sliding block; 73, electric push rod; 8, unloading assembly; 81 , cylinder; 82, air storage cylinder; 83, telescopic tube; 84, movable plate; 85, drainage hole; 86, sealing cover; 87, piston; 88, clamping spring; 89, extrusion rod; 810, ball; 9, trigger assembly; 91, rotating column; 92, trigger ball block; 10, mounting cover; 11, sealing rod; 12, water spray pipe; 13, liquid storage cylinder; 14, conduit; 15, vertical pipe; 16, stainless steel telescopic tube; 17, second motor; 18, driving gear; 19, passive gear; 20, sleeve. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] Embodiment 1

[0034] See also Figure 1 , Figure 3 as well as Figure 4 As shown, the present invention provides a technical solution, and the specific improvements are as follows:

[0035] A spraying device for plant pest control, comprising a bottom plate, a liquid inlet cylinder 1 and a liquid outlet cylinder 2 arranged at the bottom end of the liquid inlet cylinder 1, and a water outlet hole 4 is opened on the surface of the liquid outlet cylinder 2, and four water outlet holes 4 are arranged in the embodiment, and a filter screen 3 is arranged at the bottom end of the liquid inlet cylinder 1, and a mounting cover 10 is fixedly arranged on both sides of the inner wall of the liquid outlet cylinder 2, and a plurality of fine holes are opened inside the mounting cover 10, and insecticide sprayed from the fine holes can expand the spraying range, and a sealing rod 11 adapted to a water outlet trough 63 is fixedly arranged on one side of the inner wall of the mounting cover 10, and a water spray pipe 12 is connected to the bottom end of the liquid outlet cylinder 2, and a discharge port is opened on both sides of the surface of the liquid inlet cylinder 1, and a valve is arranged inside the discharge port and the water spray pipe 12, and the valve inside the discharge port and the valve inside the water spray pipe 12 are controlled by different switches, and a sealing cleaning mechanism is arranged on the surface of the liquid inlet cylinder 1;

[0036] The sealing and cleaning mechanism comprises a sealing component 5 and a cleaning component 6 which are sleeved on the surface of the liquid inlet cylinder 1. The sealing component 5 is used to seal the water outlet 4. The sealing component 5 comprises a fixed ring 51 which is sleeved on the surface of the liquid inlet cylinder 1. The surface of the fixed ring 51 is rotatably connected with a rotating ring 52. A sealing column 53 which is adapted to the water outlet 4 is movably arranged inside the fixed ring 51. One end of the sealing column 53 is inclined. An inclined groove which is adapted to the sealing column 53 is provided inside the rotating ring 52. A sealing column 53 which is adapted to the water outlet 4 is provided inside the fixed ring 51. A through groove is formed on the surface of the sleeve 20, and the inner wall of the through groove is slidably connected to the surface of the sealing column 53 through a limit block 54. A sliding groove is formed on the surface of the sealing column 53, and the inner wall of the sliding groove is fixedly connected to the surface of the limit block 54 through a buffer spring 55. A first motor 56 is fixedly provided on the surface of the sleeve 20 through a connecting column, and a first gear 57 is fixedly provided on one end of the output shaft of the first motor 56 through a coupling. A second gear 58 meshing with the first gear 57 is rotatably provided on the surface of the sleeve 20, and the bottom surface of the second gear 58 is fixedly connected to the top surface of the rotating ring 52 through a support rod.

[0037] The cleaning assembly 6 is used to backwash the filter 3. The cleaning assembly 6 includes a water tank 61 and an annular water separation box 62 arranged on the bottom surface of the fixing ring 51 through a vertical rod. The water tank 61 is fixedly arranged on the top surface of the bottom plate. A water outlet 63 is provided inside the sealing column 53. The inner wall of the annular water separation box 62 is connected to one end of the water outlet 63 through a drain pipe 64. A telescopic section is provided on the surface of the drain pipe 64. The top surface of the water tank 61 is connected to one side of the annular water separation box 62 through a water delivery hose. A water pump is provided inside the water tank 61. The water inside the water tank 61 can be transported to the inside of the annular water separation box 62 through the water delivery hose by the water pump.

[0038] The sealing cleaning mechanism also includes a sleeve 20 slidably arranged on the surface of the liquid inlet cylinder 1, and a driving member 7 is arranged on the surface of the sleeve 20, and the driving member 7 is used to adjust the upper and lower positions of the sealing assembly 5 and the cleaning assembly 6. The driving member 7 includes a threaded cylinder 71 rotatably arranged on the top surface of the bottom plate, and the surface of the threaded cylinder 71 is threadedly connected with a sliding block 72, and one side of the sliding block 72 is provided with an electric push rod 73, and the extended end of the electric push rod 73 is fixedly connected to the surface of the sleeve 20, and the top surface of the bottom plate is provided with a second motor 17 and a guide rod, and one end of the output shaft of the second motor 17 is fixedly provided with a driving gear 18 through a coupling, and the top surface of the bottom plate is rotatably provided with a support cylinder, and the top end of the support cylinder is fixedly connected to the bottom end of the threaded cylinder 71, and the surface of the support cylinder is fixedly provided with a passive gear 19 meshing with the driving gear 18, and the other side of the sliding block 72 is slidably arranged on the surface of the guide rod through a limiting sleeve;

[0039] The insecticide is transported to the inside of the liquid inlet cylinder 1. When a large-scale spraying operation is required, the valve inside the water spray pipe 12 is closed, and the insecticide entering the liquid inlet cylinder 1 is first filtered out of impurities through the filter 3, and then sprayed out from the pores and the water outlet 4;

[0040] When direct spraying is required, the second motor 17 is controlled to start in advance, so that the second motor 17 drives the support cylinder to rotate through the active gear 18 and the passive gear 19, and the threaded cylinder 71 rotates synchronously, so that the sliding block 72 drives the sleeve 20 to move downward along the surface of the threaded cylinder 71 through the electric push rod 73, and at this time, the rotating ring 52 drives the fixed ring 51 to move downward synchronously. When the sealing column 53 inside the fixed ring 51 moves to the outside of the water outlet 4, the first motor 56 is started, so that the first motor 56 drives the sleeve 20 to rotate through the first gear 57 and the second gear 58, and the rotating ring 52 rotates synchronously. When the rotating ring 52 rotates, it can push the sealing column 53 in conjunction with the setting of the inclined groove. The sealing column 53 moves along the inside of the fixed ring 51 under the thrust until it passes through the water outlet 4, and the sealing rod 11 is inserted into the inside of the water outlet groove 63, so as to realize the sealing operation of the water outlet 4, and the valve inside the water spray pipe 12 can be opened, and the insecticide after filtering out impurities can be sprayed out through the water spray pipe 12;

[0041] When it is necessary to clean the impurities on the top surface of the filter screen 3, the control rotating ring 52 is rotated in the opposite direction by a certain angle, so that the sealing column 53 moves to a certain distance inside the inclined groove under the action of the buffer spring 55. The distance is to ensure that the sealing column 53 does not break away from the seal of the water outlet hole 4 and the sealing rod 11 is moved out from the inside of the water outlet groove 63. At this time, the water pump inside the water storage tank 61 can be started, and the cleaning water inside the water storage tank 61 can be transported to the inside of the annular water separation box 62 through the water delivery hose through the water pump, and then transported to the inside of the water outlet groove 63 through the drain pipe 64. The water is flushed into the inside of the liquid outlet cylinder 2 by the water outlet groove 63. At this time, the valve inside the water spray pipe 12 is closed, and the valve inside the discharge port is opened. The impurities on the top surface of the filter screen 3 can be flushed out by the cleaning water. After flushing, the valve inside the discharge port is closed;

[0042] When the spraying device is not needed, the sealing column 53 can seal the water outlet 4 to prevent foreign matter from entering and clogging the water outlet 4 .

[0043] Embodiment 2

[0044] Based on Example 1, please refer to Figure 1 , Figure 2 as well as Figure 5 The specific improvements are as follows:

[0045] A liquid storage cylinder 13 is fixedly provided on the top surface of the bottom plate through the supporting legs, and the bottom end of the liquid storage cylinder 13 is connected to the top of the liquid inlet cylinder 1 through a pipeline, and a pressure pump is provided on the bottom surface of the bottom plate, and the pipeline is composed of a conduit 14, a stainless steel telescopic tube 16 and a vertical tube 15, and the conduit 14, the stainless steel telescopic tube 16 and the vertical tube 15 are connected to each other, wherein the conduit 14 all passes through the threaded cylinder 71 and the supporting cylinder, one end of the conduit 14 is connected to the water outlet of the pressure pump, and the water inlet of the pressure pump is connected to the bottom end of the liquid storage cylinder 13 through a water suction pipe, and the bottom end of the vertical tube 15 is connected to the top of the liquid inlet cylinder 1, and the electric push rod 73 can be started, so that the protruding end of the electric push rod 73 drives the sleeve 20 to move left and right, and the setting of the stainless steel telescopic tube 16 can realize the adjustment of the position of the liquid outlet cylinder 2, and an intermittent unloading mechanism is provided inside the liquid storage cylinder 13, and the intermittent unloading mechanism includes a unloading assembly 8, and the unloading assembly 8 includes a cylinder 81 arranged on one side of the liquid storage cylinder 13 The front of the cylinder 81 is connected to a feed pipe, one end of the cylinder 82 is connected to one end of the cylinder 81 through an exhaust pipe, one side of the inner wall of the cylinder 81 is connected to a movable plate 84 through a telescopic tube 83, and the other end of the cylinder 81 is provided with a drainage hole 85, and a one-way valve is arranged inside the drainage hole 85 to prevent water from flowing back into the cylinder 81 through the drainage hole 85. One side of the movable plate 84 is provided with a valve adapted to the drainage hole 85 through an L-shaped rod. The sealing cover 86 is provided, the L-shaped rod penetrates the cylinder 81 and extends to the inside of the liquid storage cylinder 13, a piston 87 is movably provided inside the gas storage cylinder 82, and one side of the piston 87 is fixedly connected to one side of the inner wall of the gas storage cylinder 82 through a clamping spring 88, and an extrusion rod 89 is fixedly provided on the other side of the piston 87, the extrusion rod 89 penetrates the gas storage cylinder 82 and extends to the inside of the liquid storage cylinder 13, and a ball 810 is fixedly provided on one end of the extrusion rod 89 located inside the liquid storage cylinder 13;

[0046] The intermittent feeding mechanism also includes a trigger assembly 9, which includes a rotating column 91 rotatably arranged on the bottom surface of the inner wall of the liquid storage cylinder 13, and trigger balls 92 are arranged on both sides of the surface of the rotating column 91 through cross bars, and dispersion plates are fixedly arranged on both sides of the surface of the rotating column 91, and a third motor is arranged on the top surface of the bottom plate, and the output end of the third motor is fixedly connected to the bottom end of the rotating column 91 through a coupling;

[0047] Water is pre-stored inside the liquid storage cylinder 13. The quantitative medicine is roughly divided into three parts and transported to the inside of the three cylinders 81 through the feeding pipe respectively. The third motor is started, so that the third motor drives the rotating column 91 to rotate. During the rotation of the rotating column 91, the touch ball block 92 can be driven to rotate synchronously through the cross bar. When the touch ball block 92 contacts the ball 810, the extrusion rod 89 can be pressed. At this time, the extrusion rod 89 is squeezed and drives the piston 87 to push to the left. The piston 87 pushes to transport the air inside the gas storage cylinder 82 to the inside of the telescopic tube 83 through the exhaust pipe. The telescopic tube 83 can be stretched when it is subjected to gas pressure. The right end of the telescopic tube 83 drives the L-shaped rod to move to the right through the movable plate 84, so that the sealing cover 86 is separated from the drainage hole 85. At this time, the medicine inside the cylinder 81 enters the inside of the liquid storage cylinder 13 through the drainage hole 85.

[0048] On the contrary, when the trigger ball block 92 is away from the ball 810, the extrusion rod 89 moves to the right under the force of the clamping spring 88 until it returns to the initial position. At this time, during the synchronous movement of the piston 87, the air inside the telescopic tube 83 can be sucked, so that the telescopic tube 83 is compressed, and the movable plate 84 drives the sealing cover 86 to move to the left through the L-shaped rod, so that the sealing cover 86 closes the drainage hole 85. With the rotation of the trigger ball block 92, the drainage hole 85 can be intermittently opened and closed, thereby controlling the feeding speed of the agent, and cooperating with the rotation of the dispersion plate, the agent can be fully mixed with water, so that the insecticide is prepared. By starting the pressure pump, the pressure pump can extract the insecticide in the liquid storage cylinder 13 through the water suction pipe, so that the insecticide is successively transported to the inside of the liquid inlet cylinder 1 through the conduit 14, the stainless steel telescopic tube 16 and the vertical pipe 15 for subsequent spraying and use.

[0049] Embodiment 3

[0050] Based on Example 2, please refer to Figures 1 to 5 The specific improvements are as follows:

[0051] The present invention also discloses a method for using a spraying device for controlling plant pests, which specifically comprises the following steps:

[0052] S1. Water is stored in the liquid storage cylinder 13. The medicine stored in the cylinder 81 is intermittently discharged through the intermittent feeding mechanism. The rotating column 91 is controlled to rotate so as to evenly mix the medicine and water.

[0053] S2. The mixed and evenly prepared insecticide is transported to the interior of the liquid inlet cylinder 1 through a pipeline, the sealing column 53 in the sealing component 5 is controlled to move out from the inside of the water outlet 4, and the sealing component 5 is controlled to rise, so that the water outlet 4 is opened, so that the insecticide is sprayed out from the pores and through the water outlet 4 to expand the spraying range. The water outlet 4 is closed, and the internal valve of the water spray pipe 12 is opened, so that the insecticide can penetrate into the tree crown for precise spraying.

[0054] Embodiment 4

[0055] See also Figures 1 to 5 As shown, this embodiment is obtained by combining embodiment 1 to embodiment 3.

[0056] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0057] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A spraying device for controlling plant pests, comprising a bottom plate, a liquid inlet cylinder (1), and a liquid outlet cylinder (2) arranged at the bottom end of the liquid inlet cylinder (1), and a water outlet hole (4) is opened on the surface of the liquid outlet cylinder (2), characterized in that: A filter screen (3) is provided at the bottom end of the liquid inlet cylinder (1), and a sealing cleaning mechanism is provided on the surface of the liquid inlet cylinder (1); The sealing and cleaning mechanism comprises a sealing component (5) and a cleaning component (6) which are sleeved on the surface of the liquid inlet cylinder (1); the sealing component (5) is used to seal the water outlet hole (4); and the cleaning component (6) is used to backwash and clean the filter screen (3); The sealing cleaning mechanism also includes a sleeve (20) slidably arranged on the surface of the liquid inlet cylinder (1), and a driving member (7) is arranged on the surface of the sleeve (20), and the driving member (7) is used to adjust the upper and lower positions of the sealing component (5) and the cleaning component (6).

2. A spraying device for plant pest control according to claim 1, characterized in that: The sealing assembly (5) comprises a fixed ring (51) sleeved on the surface of the liquid inlet cylinder (1), and the surface of the fixed ring (51) is rotatably connected to a rotating ring (52), a sealing column (53) adapted to the water outlet hole (4) is movably arranged inside the fixed ring (51), one end of the sealing column (53) is inclined, an inclined groove adapted to the sealing column (53) is provided inside the rotating ring (52), a through groove adapted to the sealing column (53) is provided inside the fixed ring (51), and the inner wall of the through groove is slidably connected to the surface of the sealing column (53) through a limit block (54), a sliding groove is provided on the surface of the sealing column (53), and the inner wall of the sliding groove is fixedly connected to the surface of the limit block (54) through a buffer spring (55).

3. A spraying device for plant pest control according to claim 2, characterized in that: A first motor (56) is fixedly provided on the surface of the sleeve (20) via a connecting column, and a first gear (57) is fixedly provided on one end of the output shaft of the first motor (56) via a coupling, and a second gear (58) meshing with the first gear (57) is rotatably provided on the surface of the sleeve (20), and the bottom surface of the second gear (58) is fixedly connected to the top surface of the rotating ring (52) via a supporting rod.

4. A spraying device for plant pest control according to claim 2, characterized in that: The cleaning assembly (6) comprises a water storage tank (61) and an annular water separation box (62) arranged on the bottom surface of the fixing ring (51) via a vertical rod; a water outlet groove (63) is provided inside the sealing column (53); the inner wall of the annular water separation box (62) is connected to one end of the water outlet groove (63) via a drainage pipe (64); and the top surface of the water storage tank (61) is connected to one side of the annular water separation box (62) via a water delivery hose.

5. A spraying device for plant pest control according to claim 4, characterized in that: A mounting cover (10) is fixedly provided on both sides of the inner wall of the liquid outlet cylinder (2), and a plurality of fine holes are provided inside the mounting cover (10). A sealing rod (11) adapted to the water outlet groove (63) is fixedly provided on one side of the inner wall of the mounting cover (10). A water spray pipe (12) is connected to the bottom end of the liquid outlet cylinder (2). Discharge ports are provided on both sides of the surface of the liquid inlet cylinder (1), and valves are provided inside the discharge port and the water spray pipe (12).

6. A spraying device for plant pest control according to claim 1, characterized in that: The driving member (7) comprises a threaded cylinder (71) rotatably arranged on the top surface of the bottom plate, and a sliding block (72) is threadedly connected to the surface of the threaded cylinder (71), an electric push rod (73) is arranged on one side of the sliding block (72), and the protruding end of the electric push rod (73) is fixedly connected to the surface of the sleeve (20).

7. A spraying device for plant pest control according to claim 1, characterized in that: A liquid storage cylinder (13) is fixedly arranged on the top surface of the bottom plate via support legs, and the bottom end of the liquid storage cylinder (13) is connected to the top end of the liquid inlet cylinder (1) via a pipeline.

8. A spraying device for controlling plant pests according to claim 7, characterized in that: An intermittent feeding mechanism is arranged inside the liquid storage cylinder (13), and the intermittent feeding mechanism comprises a feeding assembly (8), the feeding assembly (8) comprises a cylinder (81) and an air storage cylinder (82) arranged on one side of the liquid storage cylinder (13), one end of the air storage cylinder (82) is connected to one end of the cylinder (81) through an exhaust pipe, one side of the inner wall of the cylinder (81) is connected to a movable plate (84) through a telescopic tube (83), the other end of the cylinder (81) is provided with a discharge hole (85), and one side of the movable plate (84) is connected to the liquid storage cylinder (13) through an exhaust pipe (83). The shaped rod is provided with a sealing cover (86) matched with the discharge hole (85); a piston (87) is movably provided inside the gas storage cylinder (82); one side of the piston (87) is fixedly connected to one side of the inner wall of the gas storage cylinder (82) through a clamping spring (88); an extrusion rod (89) is fixedly provided on the other side of the piston (87); the extrusion rod (89) penetrates the gas storage cylinder (82) and extends to the inside of the liquid storage cylinder (13); a ball (810) is fixedly provided on one end of the extrusion rod (89) located inside the liquid storage cylinder (13).

9. A spraying device for controlling plant pests according to claim 8, characterized in that: The intermittent feeding mechanism further comprises a trigger assembly (9), wherein the trigger assembly (9) comprises a rotating column (91) rotatably arranged on the bottom surface of the inner wall of the liquid storage cylinder (13), and trigger balls (92) are arranged on both sides of the surface of the rotating column (91) via cross bars.

10. A method for using a spraying device for controlling plant pests, characterized in that: The specific steps include: S1, water is stored in the liquid storage cylinder (13), and the medicine stored in the cylinder (81) is intermittently discharged through the intermittent feeding mechanism, and the rotating column (91) is controlled to rotate so as to evenly mix the medicine and water; S2, the mixed and uniformly prepared insecticide is transported to the interior of the liquid inlet cylinder (1) through a pipeline, the sealing column (53) in the sealing component (5) is controlled to move out from the interior of the water outlet hole (4), and the sealing component (5) is controlled to rise, so that the water outlet hole (4) is opened, so that the insecticide is sprayed out from the fine pores and through the water outlet hole (4) to expand the spraying range, the water outlet hole (4) is closed, and the internal valve of the water spray pipe (12) is opened, so that the insecticide penetrates into the interior of the tree crown for precise spraying.

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