A pesticide application device with backflow mixing function

Abstract

The application discloses a medicine applying device with backflow mixing function, and belongs to the technical field of plant protection medicine applying equipment. The technical scheme comprises a medicine box, a water pump and a medicine liquid leading-out pipe, the medicine liquid leading-out pipe is divided into one spraying branch and two independent backflow branches, and the two backflow branches are respectively connected with a top stirring mechanism and a bottom stirring mechanism on the top side and the bottom of the medicine box. The top stirring mechanism can drive the rotating disc to rotate through the backflow of the medicine liquid, drives the stirring rods with the inclined blade paddle and the disc turbine paddle to operate, realizes the up and down convection and radial diffusion of the medicine liquid, and realizes the mixing of the medicine liquid; the bottom stirring mechanism drives the turning blade to disturb and turn over the bottom deposited medicine residue by using the water flow to impact the hydraulic impeller. The application adopts a pure hydraulic driving structure, does not need additional power, can realize the mixing of the medicine liquid in the whole region of the medicine box, effectively solves the problems of the stratification of the medicine liquid, the bottom caking and the nozzle blockage, and has the advantages of simple structure, stable operation and strong adaptability.

Description

Technical Field

[0001] This invention relates to the field of plant protection spraying equipment technology, and in particular to a spraying device with a reflux mixing function. Background Technology

[0002] Currently, most pesticide application devices used in agricultural and horticultural plant protection operations rely on the natural storage of pesticides in the tank, with the liquid being pumped out for spraying. Pesticides are mostly wettable powders or suspensions, which are prone to sedimentation and clumping when left to stand, resulting in a diluted solution at the top and a concentrated solution at the bottom of the tank.

[0003] Traditional pesticide application equipment often lacks a dedicated mixing structure, relying solely on simple water circulation for mixing. This limited mixing range fails to effectively disturb and break up pesticide residues deposited at the bottom of the tank. During application, the initial spray concentration is often too low, while the later concentration is too high, resulting in pesticide waste, uneven pesticide efficacy, and poor control. Furthermore, the settled pesticide residues easily clog nozzles and pipelines, significantly reducing application efficiency and leading to a high equipment failure rate. Summary of the Invention

[0004] To address the technical problems existing in the background art, the present invention proposes a drug application device with a reflux mixing function.

[0005] The present invention proposes a drug application device with reflux mixing function, comprising a drug tank, a water pump, and a drug outlet pipe connected to the water pump;

[0006] The medicine tank is equipped with a top-drive stirring mechanism on the top side and a bottom-disturbance stirring mechanism on the bottom. The medicine outlet pipe is divided into a spray branch and two independent return branches, and the two return branches are respectively connected to the top-drive stirring mechanism and the bottom-disturbance stirring mechanism.

[0007] The top-drive stirring mechanism is driven by the liquid in the return branch to perform overall circulation stirring of the liquid in the upper part of the medicine tank, so as to achieve the mixing of the liquid by the upper and lower convection.

[0008] The bottom disturbance and stirring mechanism is used to agitate and agitate the sediment and residue at the bottom of the medicine tank, breaking up the bottom precipitates and clumps.

[0009] Preferably, the top-drive stirring mechanism includes a rotating turntable rotatably connected to the inner cavity of the top of the medicine tank. The turntable has a cavity inside, and multiple sets of inclined backflush nozzles are distributed on the lower circumference of the turntable. The backflush nozzles are connected to the cavity of the turntable and are uniformly inclined in the same direction of rotation. The high-pressure medicine liquid corresponding to the return branch of the top-drive stirring mechanism enters the cavity of the turntable and is sprayed out from the backflush nozzles, driving the turntable to rotate through the reaction force of the spray.

[0010] Preferably, a vertically arranged stirring rod is fixedly connected to the bottom of the turntable, an inclined blade is fixedly provided in the middle of the stirring rod, and a disc turbine is fixedly provided at the bottom of the rotating shaft.

[0011] Preferably, the bottom stirring mechanism includes a long strip-shaped liquid cavity that is horizontally fixed to the bottom side wall of the medicine tank. The long strip-shaped liquid cavity is connected to the medicine outlet pipe through a corresponding return branch, and multiple sets of outlet pipes are evenly arranged on the side wall of the long strip-shaped liquid cavity.

[0012] Preferably, each set of liquid outlet pipes is provided with a horizontally arranged rotating rod inside. One end of the rotating rod is rotatably connected to the inner wall of the elongated liquid cavity. A hydraulic impeller is fixedly installed on the rod body. The hydraulic impeller is located inside the liquid outlet pipe. When the liquid flows through the liquid outlet pipe, it impacts the hydraulic impeller and drives the rotating rod to rotate. The outer end of the rotating rod extends to the outside of the liquid outlet pipe and is fixed with multiple sets of turning blades for disturbing and turning the sediment at the bottom of the medicine tank.

[0013] Preferably, each of the two sets of return branches is equipped with an independent control valve, and each control valve can be opened and closed independently. The two return branches are independently controllable, and the working conditions such as premixing and stirring and continuous mixing can be flexibly switched. The dispensing speed is fast, the concentration of the pesticide solution is uniform throughout the application process, and the plant protection effect is stable.

[0014] Preferably, the inlet ends of both sets of return branches are equipped with filter screens. The filter screen structure in the return branches effectively prevents clogging, greatly improves the continuous operation capability of the equipment, and reduces maintenance costs.

[0015] The application device with reflux mixing function proposed in this invention has the following beneficial effects:

[0016] This invention features a dual-stirring structure with a top-drive stirring mechanism and a bottom-disturbance stirring mechanism. The top-drive mechanism is responsible for circulating and mixing the pesticide solution in the upper part of the tank, while the bottom-disturbance mechanism is used to prevent sedimentation and clumping at the bottom, achieving full-area stirring and solving the problems of pesticide stratification and uneven concentration. The entire system is driven by a water pump with a return flow, eliminating the need for an additional motor and transmission structure. It features a simple structure, low energy consumption, low failure rate, and convenient maintenance, making it compatible with various plant protection spraying equipment.

[0017] The top-drive stirring mechanism, combined with the inclined blade impeller and the disc turbine impeller, forms a composite flow field of axial convection and radial diffusion, which makes the liquid more fully agitated and enhances the mixing effect.

[0018] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the top-drive stirring mechanism and the bottom-disturbance stirring mechanism in this invention;

[0021] Figure 3 This is a schematic diagram of the top-drive stirring mechanism and the bottom-disturbance stirring mechanism in this invention;

[0022] Figure 4 This is a schematic diagram of the internal structure of the bottom stirring mechanism in this invention.

[0023] Explanation of the labels in the diagram:

[0024] 1. Medicine tank; 101. Water pump; 102. Medicine solution outlet pipe; 103. Control valve; 104. Return branch;

[0025] 201. Turntable; 202. Backflush nozzle; 203. Agitator bar; 204. Inclined blade propeller; 205. Disc turbine propeller;

[0026] 3. Long strip-shaped liquid chamber; 301. Liquid outlet pipe; 302. Rotating rod; 303. Material turning blade; 304. Hydraulic impeller. Detailed Implementation

[0027] Embodiments of the present invention are described in detail below. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar symbols denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0028] like Figures 1-4 The application device shown has a backflow mixing function, which mainly includes a medicine tank 1, a water pump 101, and a medicine outlet pipe 102. The medicine outlet pipe 102 splits to form a spray branch and two independent backflow branches 104. The two backflow branches 104 are respectively connected to the top drive stirring mechanism and the bottom disturbance stirring mechanism. The whole device is driven by the high-pressure backflow hydraulic power of the water pump 101 and does not require additional power.

[0029] In actual operation, there are two modes: premixing and application. During the premixing stage, the spraying branch can be closed, and two sets of return branches 104 can be opened via control valve 103. High-pressure liquid enters the cavity of the rotary table 201 of the top-drive mixing mechanism and is sprayed at high speed through multiple sets of unidirectionally inclined back jet nozzles 202. The jet reaction force drives the rotary table 201 to rotate continuously. The rotary table 201 drives the bottom stirring rod 203 to rotate synchronously, the central inclined blade 204 generates axial water flow, causing the liquid to flow vertically, and the bottom disc turbine 205 generates radial diffusion water flow, breaking up localized concentrated areas of liquid and ensuring rapid and uniform mixing of the liquid in the upper part of the tank 1.

[0030] At the same time, the high-pressure liquid enters the elongated liquid chamber 3 of the bottom stirring mechanism and flows out from each liquid outlet pipe 301. The high-speed water flow impacts the built-in hydraulic impeller 304, driving the horizontally arranged rotating rod 302 to rotate. The material turning blades 303 on the outside of the rotating rod 302 continuously turn and disturb the liquid and sediment at the bottom of the medicine tank 1, breaking up the bottom sediment clumps. Together with the top stirring structure, the liquid in the whole tank is quickly and evenly mixed.

[0031] During normal application, the spraying branch and two sets of return branch 104 can be opened simultaneously. While spraying the pesticide outward, the equipment continuously circulates and mixes the pesticide solution in the pesticide tank 1 through the double stirring mechanism, avoiding the stratification and sedimentation of the pesticide solution throughout the process, and ensuring that the concentration of the sprayed pesticide solution is always uniform.

[0032] The filters installed at the inlet ends of the two sets of return branch lines 104 can filter impurities in the liquid throughout the entire process, effectively preventing clogging of the backwash nozzle 202, hydraulic impeller 304, outlet pipe 301, and nozzle, ensuring stable operation of the equipment over a long period of time. The independent control valve 103 of each return branch line 104 can flexibly control the operation of single or dual mechanisms, adapting to the stirring requirements of different agents and dosages, and has strong adaptability.

[0033] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A pesticide application device with reflux mixing function, characterized in that: Includes a medicine box (1), a water pump (101), and a medicine outlet pipe (102) connected to the water pump (101); The medicine tank (1) is provided with a top-drive stirring mechanism on the top side and a bottom-disturbance stirring mechanism at the bottom. The medicine outlet pipe (102) is divided to form a spray branch and two independent return branches (104). The two return branches (104) are respectively connected to the top-drive stirring mechanism and the bottom-disturbance stirring mechanism. The top-drive stirring mechanism is driven by the liquid medicine in the return branch (104) to perform overall circulation stirring of the liquid medicine in the upper part of the medicine tank (1) and realize the liquid medicine is mixed evenly by the upper and lower convection. The bottom disturbance stirring mechanism is used to agitate and stir the medicine liquid and residue deposited at the bottom of the medicine tank (1) to break up the bottom sediment and clumps.

2. The application device with reflux mixing function according to claim 1, characterized in that, The top-drive stirring mechanism includes a turntable (201) rotatably connected to the inner cavity of the top of the medicine tank (1). The turntable (201) has a cavity inside. Multiple sets of inclined backflush nozzles (202) are distributed on the lower circumference of the turntable (201). The backflush nozzles (202) are connected to the cavity of the turntable (201) and are uniformly inclined in the same direction of rotation. The high-pressure medicine liquid corresponding to the return branch (104) of the top-drive stirring mechanism is introduced into the cavity of the turntable (201) and sprayed out from the backflush nozzles (202), driving the turntable (201) to rotate through the reaction force of the spray.

3. A pesticide application device with reflux mixing function according to claim 2, characterized in that, The bottom of the turntable (201) is fixedly connected to a vertically arranged stirring rod (203), and a slanted blade (204) is fixedly provided in the middle of the stirring rod (203). A disc turbine blade (205) is fixedly provided at the bottom of the rotating shaft.

4. A pesticide application device with reflux mixing function according to claim 1, characterized in that, The bottom stirring mechanism includes a long strip liquid cavity (3) that is horizontally fixed to the bottom side wall of the medicine tank (1). The long strip liquid cavity (3) is connected to the medicine outlet pipe (102) through a corresponding return branch (104). Multiple sets of liquid outlet pipes (301) are evenly arranged on the side wall of the long strip liquid cavity (3).

5. A pesticide application device with reflux mixing function according to claim 4, characterized in that, Each set of the liquid outlet pipe (301) is provided with a horizontally arranged rotating rod (302). One end of the rotating rod (302) is rotatably connected to the inner wall of the elongated liquid cavity (3). A hydraulic impeller (304) is fixedly installed on the rod body of the rotating rod (302). The hydraulic impeller (304) is located inside the liquid outlet pipe (301). When the liquid flows through the liquid outlet pipe (301), it impacts the hydraulic impeller (304) and drives the rotating rod (302) to rotate. The outer end of the rotating rod (302) extends to the outside of the liquid outlet pipe (301) and is fixed with multiple sets of turning blades (303) for disturbing and turning the sediment at the bottom of the medicine box (1).

6. The application device with reflux mixing function according to claim 1, characterized in that, Each of the two sets of return branches (104) is equipped with an independent control valve (103), and each control valve (103) can be opened and closed independently.

7. The application device with reflux mixing function according to claim 1, characterized in that, Both sets of return branch (104) are equipped with filter screens at their inlet ends.

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