Medicament preparation device for forestry pest treatment

Abstract

The invention relates to a medicament preparation device for forestry pest treatment. The medicament preparation device comprises a sprayer barrel body, a liquid adding opening, a primary dilution barrel, a first rotating shaft, a first stirring blade, a second stirring blade, a driving part and a negative pressure device, wettable powder and powder particles are added into the primary dilution barrel, the first stirring blades stir and mix the wettable powder, the powder particles and a diluent for the first time to form mother liquor, and the mother liquor is slowly transferred into the sprayer barrel body through the mother liquor transfer assembly; the mother liquor and the diluent transferred into the sprayer barrel body are stirred and mixed for the second time through the second stirring blade to form the needed concentration, the situation that the wettable powder and powder particles are agglomerated in the diluent and sink at the bottom of a container is avoided through the secondary dilution method, it is guaranteed that the wettable powder and powder particles are evenly dispersed in the diluent, and the effect that the wettable powder and powder particles are evenly dispersed in the diluent is achieved. The medication accuracy and the medicine effect are improved.

Description

Technical Field

[0001] The invention relates to the technical field of medicament preparation, in particular to a medicament preparation device for controlling forestry harmful organisms. Background Art

[0002] Forestry is a production sector dedicated to protecting the ecological environment and maintaining ecological balance, cultivating and preserving forests to produce timber and other forest products, and utilizing the natural properties of trees for their protective effects. It is a vital component of the national economy. During their growth and development, trees are susceptible to pests and adverse environmental influences, which can cause a series of abnormal changes in their physiology and tissue structure, disrupting their normal growth and development and leading to their death. If unchecked, pests can spread, affecting surrounding trees and causing significant economic losses. Chemical control is often used to control forest pests, spraying pesticides on the trunks of trees to eliminate the pests and protect the trees.

[0003] Pest control agents are generally sold as concentrated powders or liquids, and need to be prepared for use, mainly by diluting them with water or other liquids. The control personnel then carry a sprayer and use it to spray the diluted agent on the surface of the trees. Since the area of ​​forest farms is generally large, when spraying agents for pest control, most of the time the agents are prepared on site, and the dilution is carried out directly in the barrel of the sprayer. However, the control effect of the agent sprayed on the surface of the trees is not only related to the spraying time and the coverage of the agent, but also to the concentration of the effective factors in the agent. When the concentration of the effective factors is too low, the control effect will be poor, and when the concentration of the effective factors is too high, the agent will be wasted. Therefore, when diluting and preparing the agent, it is necessary to evenly mix the agent with water or other diluents.

[0004] Currently, to improve the uniformity of pesticide preparation, forestry workers will stir the pesticide after pouring it all into the diluent to improve its uniformity. However, when wettable powders and powders (such as thiophanate-methyl, mancozeb, and imidacloprid) are poured into the diluent at very low dosages, they often clump together into coarse aggregates. These coarse aggregates sink to the bottom of the water before they are fully dispersed. At this time, stirring is very difficult, making it difficult to disperse the pesticide in the sprayer. This results in high concentrations in some areas and low concentrations in others, which is not conducive to uniform spraying and affects the effectiveness of forest pest control. Summary of the Invention

[0005] The embodiment of the present invention provides a pesticide preparation device for controlling forest pests, which can solve the problem in the prior art that wettable powders and powder particles used in very small amounts often agglomerate together to form coarse aggregates when poured into a diluent. These coarse aggregates sink to the bottom of the water before they are fully dispersed. At this time, stirring is very difficult, and it is difficult to disperse the pesticide in the sprayer, resulting in high concentrations in some places and low concentrations in other places, which is not conducive to uniform spraying and affects the effect of controlling forest pests.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solution: a pesticide preparation device for controlling forest pests, comprising:

[0007] A sprayer barrel, wherein a liquid filling port is provided on the top of the sprayer barrel;

[0008] A primary dilution barrel, which is arranged on the top of the sprayer barrel;

[0009] The stirring device includes: a first rotating shaft, the upper end of the first rotating shaft being rotatably connected to the interior of the primary dilution barrel, and the lower end of the first rotating shaft being rotatably connected to the interior of the sprayer barrel; a first stirring blade, the first stirring blade being disposed on the first rotating shaft and located inside the primary dilution barrel; a second stirring blade, the second stirring blade being disposed on the first rotating shaft and located inside the sprayer barrel; and a driving portion connected to the first rotating shaft and configured to drive the first rotating shaft to rotate;

[0010] The mother liquor transfer component includes a negative pressure device connected between the first rotating shaft and the sprayer barrel, the negative pressure device is used to transfer the mother liquor inside the primary dilution barrel to the sprayer barrel, and the flow rate of the negative pressure device is adjustable.

[0011] Preferably, the stirring device also includes: a main shaft, which is rotatably connected to the sprayer barrel; a driving spur gear, which is arranged at the lower end of the main shaft; a second rotating shaft, on which a second stirring blade is provided; two driven spur gears, which are respectively arranged on the first rotating shaft and the second rotating shaft, and the two driven spur gears are engaged with the driving spur gear.

[0012] Preferably, the main shaft is provided with a third stirring blade located inside the sprayer barrel, and the driving part is a rotating handle provided at the upper end of the main shaft.

[0013] Preferably, the negative pressure device includes: a negative pressure chamber, which is arranged on the outside of the primary dilution barrel; a liquid suction pipe, which is connected between the primary dilution barrel and the negative pressure chamber; a liquid outlet pipe, which is connected between the negative pressure chamber and the sprayer barrel body; a piston, which is slidably connected to the inside of the negative pressure chamber; a piston rod, which is arranged on the piston; and a first elastic member, which is arranged between the piston and the inner wall of the negative pressure chamber.

[0014] Preferably, a one-way valve is provided inside the liquid suction pipe and the liquid discharge pipe respectively.

[0015] Preferably, the mother liquid transfer assembly also includes: a turntable, which is rotatably connected to the upper end of the sprayer barrel; a drive pin, which is arranged on the turntable, and the position of the drive pin can be adjusted along the radial direction of the turntable; a connecting rod, the two ends of the connecting rod are respectively hinged on the drive pin and the piston rod; a driving bevel gear, which is arranged at the upper end of the second rotating shaft; and a driven bevel gear, which is coaxially arranged with the turntable and meshes with the driving bevel gear.

[0016] Preferably, a guide groove is radially provided on the turntable, a ball screw is rotatably connected to the guide groove, a screw nut is threadedly connected to the ball screw and is slidably connected to the guide groove, and the drive pin is provided on the screw nut.

[0017] Preferably, the sprayer barrel and the primary dilution barrel are made of transparent material, and scale lines are provided on the sprayer barrel and the primary dilution barrel.

[0018] A method for preparing a pesticide for controlling forestry pests comprises the following steps:

[0019] S1: The driving unit drives the first stirring blade and the second stirring blade to rotate through the first rotating shaft;

[0020] S2: Add a predetermined amount of diluent to the primary dilution barrel and the sprayer barrel respectively;

[0021] S3: adding the wettable powder and granules into the primary dilution bucket, rotating the first stirring blade to stir and mix the wettable powder, granules and diluent for the first time to form a mother liquor;

[0022] S4: The mother liquor is slowly transferred from the mother liquor transfer component to the sprayer barrel, and the second stirring blade stirs and mixes the mother liquor transferred to the sprayer barrel with the diluent for a second time to form the required concentration.

[0023] Compared with the prior art, the present invention cooperates with the sprayer barrel, the liquid adding port, the primary dilution barrel, the first rotating shaft, the first stirring blade, the second stirring blade, the driving unit and the negative pressure device. When a very small amount of wettable powder or powder is modulated, the driving unit drives the first rotating shaft to rotate, and the first rotating shaft drives the first stirring blade and the second stirring blade to rotate, respectively adding a predetermined amount of diluent to the primary dilution barrel and the sprayer barrel, and adding the wettable powder or powder into the primary dilution barrel. The first stirring blade stirs and mixes the wettable powder or powder with the diluent for the first time to form a mother liquor, and the mother liquor is slowly transferred to the sprayer barrel by the mother liquor transfer component. The second stirring blade stirs and mixes the mother liquor transferred to the sprayer barrel with the diluent for the second time to form the required concentration. The secondary dilution method helps to avoid the wettable powder or powder from agglomerating in the diluent and sinking to the bottom of the container, thereby ensuring that the wettable powder or powder is evenly dispersed in the diluent, thereby improving the accuracy and efficacy of the medication. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the main structure of the present invention;

[0025] Figure 2 This is a schematic diagram of the main cross-sectional structure of the present invention;

[0026] Figure 3 This is a schematic diagram of the rear view structure of the turntable of the present invention;

[0027] Figure 4 This is a schematic diagram of the main cross-sectional structure of the primary dilution barrel of the present invention;

[0028] Figure 5 For the present invention Figure 4 A schematic diagram of the structure at center A;

[0029] Figure 6 Schematic diagram of the support structure of the present invention.

[0030] In the figure: 1. sprayer barrel; 2. liquid filling port; 3. primary dilution barrel; 4. first rotating shaft; 5. first stirring blade; 6. second stirring blade; 7. liquid pipe; 8. liquid outlet pipe; 9. negative pressure chamber; 10. piston; 11. piston rod; 12. first elastic member; 13. main shaft; 14. driving spur gear; 15. second rotating shaft; 16. driven spur gear; 17. third stirring blade; 18. rotating handle; 19. turntable; 20. driving pin; 21. connecting rod; 22. driving bevel gear; 23. driven bevel gear; 24. guide groove; 25. ball screw; 26. screw nut; 27. bracket; 28. wedge-shaped retaining ring; 29. ​​second elastic member; 30. valve ball. DETAILED DESCRIPTION

[0031] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the technical solutions of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0032] like Figures 1 to 6 As shown, a pesticide preparation device for controlling forestry harmful organisms includes:

[0033] A sprayer barrel 1, with a liquid filling port 2 provided on the top of the sprayer barrel 1;

[0034] A primary dilution barrel 3 is provided on the top of the sprayer barrel 1;

[0035] The stirring device includes: a first rotating shaft 4, the upper end of the first rotating shaft 4 is rotatably connected to the interior of the primary dilution barrel 3, and the lower end of the first rotating shaft 4 is rotatably connected to the interior of the sprayer barrel 1; a first stirring blade 5, the first stirring blade 5 is provided on the first rotating shaft 4 and is located inside the primary dilution barrel 3; a second stirring blade 6, the second stirring blade 6 is provided on the first rotating shaft 4 and is located inside the sprayer barrel 1; a driving unit, the driving unit is connected to the first rotating shaft 4, and the driving unit is used to drive the first rotating shaft 4 to rotate;

[0036] The mother liquor transfer component includes a negative pressure device connected between the first rotating shaft 4 and the sprayer barrel 1. The negative pressure device is used to transfer the mother liquor inside the primary dilution barrel 3 to the sprayer barrel 1. The flow rate of the negative pressure device is adjustable.

[0037] The liquid adding port 2 and the upper opening of the primary dilution barrel 3 are both detachably connected with end covers. Specifically, the end covers can be threadedly connected or snapped onto the liquid adding port 2 or the upper opening of the primary dilution barrel 3 to seal the openings of the liquid adding port 2 and the primary dilution barrel 3 to prevent the smell of the medicine from affecting the efficacy of the medicine and to prevent forestry workers from being poisoned.

[0038] When modulating wettable powders and powder particles with very small amounts, the driving unit drives the first rotating shaft 4 to rotate, and the first rotating shaft 4 drives the first stirring blade 5 and the second stirring blade 6 to rotate, and a predetermined amount of diluent is added to the primary dilution barrel 3 and the sprayer barrel body 1 respectively. The wettable powder and powder particles are added to the primary dilution barrel 3, and the first stirring blade 5 stirs and mixes the wettable powder, powder particles and diluent for the first time to form a mother liquor. The mother liquor is slowly transferred to the sprayer barrel body 1 by the mother liquor transfer component, and the second stirring blade 6 stirs and mixes the mother liquor transferred to the sprayer barrel body 1 and the diluent for a second time to form a required concentration.

[0039] In order to achieve the purpose of improving the uniformity of dispersion of wettable powder and powder particles in the diluent, preferably, the stirring device also includes: a main shaft 13, which is rotatably connected to the sprayer barrel 1; a driving spur gear 14, which is arranged at the lower end of the main shaft 13; a second rotating shaft 15, on which a second stirring blade 6 is provided; two driven spur gears 16, which are respectively arranged on the first rotating shaft 4 and the second rotating shaft 15, and the two driven spur gears 16 are engaged with the driving spur gear 14.

[0040] The main shaft 13 is provided with a third stirring blade 17 located inside the sprayer barrel 1 , and the driving part is a rotating handle 18 provided at the upper end of the main shaft 13 .

[0041] Specifically, the forestry personnel rotate the rotating handle 18, the rotating handle 18 drives the main shaft 13 to rotate, the main shaft 13 drives the driving spur gear 14 and the third stirring blade 17 to rotate, the driving spur gear 14 drives the first rotating shaft 4 and the second rotating shaft 15 to rotate through the two driven spur gears 16, the first rotating shaft 4 and the second rotating shaft 15 drive the second stirring blade 6 to rotate, and the rotation direction of the second stirring blade 6 is opposite to the rotation direction of the third stirring blade 17, so that the liquid forms turbulence inside the sprayer barrel 1, thereby improving the mixing and dispersion effect and improving the uniformity of dispersion of wettable powder and powder particles in the diluent.

[0042] In order to achieve the purpose of improving the uniformity of dispersion of wettable powders and powder particles in the diluent, preferably, the negative pressure device includes: a negative pressure chamber 9, which is arranged on the outside of the primary dilution barrel 3; a liquid suction pipe 7, which is connected between the primary dilution barrel 3 and the negative pressure chamber 9; a liquid outlet pipe 8, which is connected between the negative pressure chamber 9 and the sprayer barrel body 1; a piston 10, which is slidably connected to the inside of the negative pressure chamber 9; a piston rod 11, which is arranged on the piston 10; a first elastic member 12, which is a spring or a metal spring, and is arranged between the piston 10 and the inner wall of the negative pressure chamber 9.

[0043] The mother liquid transfer assembly also includes: a turntable 19, which is rotatably connected to the upper end of the sprayer barrel 1; a drive pin 20, which is arranged on the turntable 19, and the position of the drive pin 20 can be adjusted along the radial direction of the turntable 19; a connecting rod 21, the two ends of the connecting rod 21 are respectively hinged on the drive pin 20 and the piston rod 11; a driving bevel gear 22, which is arranged at the upper end of the second rotating shaft 15; and a driven bevel gear 23, which is coaxially arranged with the turntable 19 and meshes with the driving bevel gear 22.

[0044] Specifically, the forestry personnel rotates the rotating handle 18, the rotating handle 18 drives the main shaft 13 to rotate, the main shaft 13 drives the driving spur gear 14 and the third stirring blade 17 to rotate, the driving spur gear 14 drives the first rotating shaft 4 and the second rotating shaft 15 to rotate through two driven spur gears 16, the first rotating shaft 4 and the second rotating shaft 15 drive the first stirring blade 5 and the second stirring blade 6 to rotate, the first stirring blade 5 stirs the liquid in the primary dilution barrel 3, the second stirring blade 6 and the third stirring blade 17 stir the liquid in the sprayer barrel 1 The second rotating shaft 15 drives the driving bevel gear 22 to rotate, the driving bevel gear 22 drives the turntable 19 to rotate through the driven bevel gear 23, the turntable 19 drives the driving pin 20 to rotate, and the driving pin 20 drives the piston 10 to perform piston movement through the connecting rod 21, gradually transferring the mother liquid in the primary dilution barrel 3 to the sprayer barrel 1, so that the mother liquid in the primary dilution barrel 3 is slowly transferred to the sprayer barrel 1. By transferring while stirring, the mixing and dispersion effect is improved, and the uniformity of dispersion of the wettable powder and powder particles in the diluent is improved.

[0045] Preferably, a one-way valve is provided inside the liquid suction pipe 7 and the liquid discharge pipe 8 respectively.

[0046] The one-way valve includes: a bracket 27, which is arranged inside the suction tube 7 or the discharge tube 8; a wedge-shaped retaining ring 28, which is arranged on the inner wall of the suction tube 7 or the discharge tube 8; a second elastic member 29, which is arranged on the bracket 27; and a valve ball 30, which is arranged on the end of the second elastic member 29 away from the bracket 27.

[0047] Specifically, when the negative pressure chamber 9 absorbs liquid, the valve ball 30 on the liquid outlet pipe 8 closes the liquid outlet pipe 8, and the valve ball 30 on the liquid suction pipe 7 opens. When the negative pressure chamber 9 discharges liquid, the valve ball 30 on the liquid suction pipe 7 closes the liquid suction pipe 7, and the valve ball 30 on the liquid outlet pipe 8 opens, so that the mother liquid in the primary dilution barrel 3 flows unidirectionally to the sprayer barrel body 1.

[0048] In order to achieve the purpose of improving the uniformity of dispersion of wettable powder and powder particles in the diluent, preferably, a guide groove 24 is radially provided on the turntable 19, a ball screw 25 is rotatably connected to the guide groove 24, and a screw nut 26 is threadedly connected to the ball screw 25 and is slidably connected to the guide groove 24, and the drive pin 20 is provided on the screw nut 26.

[0049] Specifically, the eccentricity of the screw nut 26 and the drive pin 20 can be adjusted by rotating the ball screw 25. When the mother liquid is prepared, the position of the drive pin 20 is adjusted to the center of the turntable 19. At this time, the negative pressure device does not work, and only the mother liquid is stirred and configured without transferring the mother liquid. After the mother liquid configuration is completed, the flow rate of the mother liquid transfer is adjusted by adjusting the eccentricity of the drive pin 20. The method of stirring while transferring is adopted to improve the mixing and dispersion effect and improve the uniformity of dispersion of wettable powders and powder particles in the diluent.

[0050] In order to achieve the purpose of improving the uniformity of dispersion of wettable powders and powder particles in the diluent, preferably, the sprayer barrel 1 and the primary dilution barrel 3 are made of transparent material, and scale lines are provided on the sprayer barrel 1 and the primary dilution barrel 3. The setting of the scale lines facilitates forestry personnel to control the amount of diluent added and improve the uniformity of dispersion of wettable powders and powder particles in the diluent.

[0051] A method for preparing a pesticide for controlling forestry pests comprises the following steps:

[0052] S1: The driving unit drives the first stirring blade 5 and the second stirring blade 6 to rotate through the first rotating shaft 4;

[0053] S2: Add a predetermined amount of diluent to the primary dilution barrel 3 and the sprayer barrel 1 respectively;

[0054] S3: Add the wettable powder and granules into the primary dilution barrel 3, and rotate the first stirring blade 5 to stir and mix the wettable powder, granules and diluent for the first time to form a mother liquor;

[0055] S4: The mother liquid is slowly transferred from the mother liquid transfer component to the sprayer barrel 1, and the second stirring blade 6 stirs and mixes the mother liquid transferred to the sprayer barrel 1 with the diluent for a second time to form a required concentration.

[0056] Compared with the prior art, the present invention cooperates with the sprayer barrel 1, the liquid adding port 2, the primary dilution barrel 3, the first rotating shaft 4, the first stirring blade 5, the second stirring blade 6, the driving unit and the negative pressure device. When a very small amount of wettable powder or powder is prepared, the driving unit drives the first rotating shaft 4 to rotate, and the first rotating shaft 4 drives the first stirring blade 5 and the second stirring blade 6 to rotate, respectively adding a predetermined amount of diluent to the primary dilution barrel 3 and the sprayer barrel 1, and adding the wettable powder or powder to the primary dilution barrel 3. The first stirring blade 5 stirs and mixes the wettable powder or powder with the diluent for the first time to form a mother liquor, and the mother liquor is slowly transferred to the sprayer barrel 1 by the mother liquor transfer component. The second stirring blade 6 stirs and mixes the mother liquor transferred to the sprayer barrel 1 with the diluent for the second time to form the required concentration. The secondary dilution method helps to prevent the wettable powder or powder from agglomerating in the diluent and sinking to the bottom of the container, ensuring that the wettable powder or powder is evenly dispersed in the diluent, thereby improving the accuracy and efficacy of the medication.

[0057] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A pesticide preparation device for controlling forest pests, characterized in that: include: A sprayer barrel (1), wherein a liquid filling port (2) is provided on the top of the sprayer barrel (1); A primary dilution barrel (3), the primary dilution barrel (3) being arranged on the top of the sprayer barrel (1); A stirring device, the stirring device comprising: a first rotating shaft (4), the upper end of the first rotating shaft (4) being rotatably connected to the interior of a primary dilution barrel (3), and the lower end of the first rotating shaft (4) being rotatably connected to the interior of a sprayer barrel (1); a first stirring blade (5), the first stirring blade (5) being arranged on the first rotating shaft (4) and located inside the primary dilution barrel (3); a second stirring blade (6), the second stirring blade (6) being arranged on the first rotating shaft (4) and located inside the sprayer barrel (1); and a driving portion, the driving portion being connected to the first rotating shaft (4), and the driving portion being used to drive the first rotating shaft (4) to rotate; A mother liquid transfer assembly comprises a negative pressure device connected between a first rotating shaft (4) and a sprayer barrel (1), the negative pressure device being used to transfer the mother liquid inside a primary dilution barrel (3) to the sprayer barrel (1), and the flow rate of the negative pressure device being adjustable.

2. The pesticide preparation device for controlling forest pests according to claim 1, characterized in that: The stirring device further comprises: a main shaft (13), the main shaft (13) being rotatably connected to the sprayer barrel (1); a driving spur gear (14), the driving spur gear (14) being arranged at the lower end of the main shaft (13); a second rotating shaft (15), the second rotating shaft (15) being provided with a second stirring blade (6); and two driven spur gears (16), the two driven spur gears (16) being respectively arranged on the first rotating shaft (4) and the second rotating shaft (15), the two driven spur gears (16) being meshed with the driving spur gear (14).

3. The drug preparation device for controlling forest pests according to claim 2, characterized in that: The main shaft (13) is provided with a third stirring blade (17) located inside the sprayer barrel (1), and the driving part is a rotating handle (18) provided at the upper end of the main shaft (13).

4. The drug preparation device for controlling forest pests according to claim 1, characterized in that: The negative pressure device comprises: a negative pressure chamber (9), the negative pressure chamber (9) being arranged outside a primary dilution barrel (3); a liquid suction pipe (7), the liquid suction pipe (7) being connected between the primary dilution barrel (3) and the negative pressure chamber (9); a liquid outlet pipe (8), the liquid outlet pipe (8) being connected between the negative pressure chamber (9) and the sprayer barrel (1); a piston (10), the piston (10) being slidably connected inside the negative pressure chamber (9); a piston rod (11), the piston rod (11) being arranged on the piston (10); and a first elastic member (12), the first elastic member (12) being arranged between the piston (10) and the inner side wall of the negative pressure chamber (9).

5. The drug preparation device for controlling forest pests according to claim 4, characterized in that: One-way valves are respectively provided inside the liquid suction pipe (7) and the liquid discharge pipe (8).

6. The drug preparation device for controlling forestry harmful organisms according to claim 2 or 4, characterized in that: The mother liquid transfer assembly further comprises: a turntable (19), the turntable (19) being rotatably connected to the upper end of the sprayer barrel (1); a driving pin (20), the driving pin (20) being arranged on the turntable (19), and the position of the driving pin (20) being adjustable along the radial direction of the turntable (19); a connecting rod (21), the two ends of the connecting rod (21) being hinged to the driving pin (20) and the piston rod (11), respectively; a driving bevel gear (22), the driving bevel gear (22) being arranged at the upper end of the second rotating shaft (15); and a driven bevel gear (23), the driven bevel gear (23) being coaxially arranged with the turntable (19), and the driven bevel gear (23) being meshed with the driving bevel gear (22).

7. The drug preparation device for controlling forest pests according to claim 6, characterized in that: A guide groove (24) is radially provided on the turntable (19), a ball screw (25) is rotatably connected to the guide groove (24), a screw nut (26) is threadedly connected to the ball screw (25) and is slidably connected to the guide groove (24), and the driving pin (20) is provided on the screw nut (26).

8. The drug preparation device for controlling forest pests according to claim 1, characterized in that: The sprayer barrel (1) and the primary dilution barrel (3) are made of transparent material, and scale lines are provided on the sprayer barrel (1) and the primary dilution barrel (3).

9. A method for preparing a medicine for controlling forestry pests, which is implemented using the medicine preparation device for controlling forestry pests according to claim 1, characterized in that: The following steps are involved: S1: The driving unit drives the first stirring blade (5) and the second stirring blade (6) to rotate via the first rotating shaft (4); S2: adding a predetermined amount of diluent into the primary dilution barrel (3) and the sprayer barrel (1) respectively; S3: adding the wettable powder and the granules into the primary dilution barrel (3), and rotating the first stirring blade (5) to stir and mix the wettable powder, the granules and the diluent for the first time to form a mother liquor; S4: The mother liquor is slowly transferred from the mother liquor transfer component to the sprayer barrel (1), and the second stirring blade (6) stirs and mixes the mother liquor transferred to the sprayer barrel (1) with the diluent for a second time to form the required concentration.

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