Plant protection pesticide spraying machine

Abstract

The utility model relates to the technical field of pesticide spraying equipment, in particular to a plant protection pesticide spraying machine. The structure is more scientific and reasonable, the particle pesticide dissolving speed is increased, particles entering the spray head are effectively reduced, and the spray head blocking accident rate is reduced; comprising a liquid medicine barrel, a spraying mechanism and a liquid supply mechanism, the spraying mechanism comprises a supporting frame and a spraying pipe installed on the supporting frame, and multiple sets of evenly-distributed spraying heads are installed on the spraying pipe; the liquid supply mechanism comprises an air pump and an annular pipe installed at the bottom in the liquid medicine barrel, a plurality of air nozzles evenly distributed in the circumferential direction are installed on the annular pipe, the flow outlet ends of the air nozzles face the upper portion of the middle of the annular pipe and are obliquely arranged clockwise or anticlockwise, the air outlet end of the air pump is communicated with the air inlet end of the annular pipe, and the air outlet end of the air pump is communicated with the air inlet end of the annular pipe. The input end of the spraying pipe extends into the inner bottom of the liquid medicine barrel and is positioned in the center of the annular pipe.

Description

Technical Field

[0001] This utility model relates to the technical field of pesticide spraying equipment, and in particular to a crop protection pesticide spraying machine. Background Technology

[0002] As we all know, pesticide spraying is a crucial step in agricultural production to prevent pests and diseases and ensure crop yields.

[0003] For example, Chinese utility model patent CN203040495U discloses a backpack-type electric low-volume boom sprayer, including a frame and a carrying strap. The frame is equipped with a pesticide tank, a power unit, a water pump connected to the power unit, and a boom assembly that moves vertically with the frame. The pesticide tank, water pump, and boom are connected by pipes to form a pumping system. Because the boom assembly is symmetrically arranged with multiple nozzles, the spraying range can be expanded. The boom assembly moves vertically with the frame, allowing adjustment of the spraying height to suit different growth stages of the crop. The boom assembly adopts a folding structure.

[0004] However, when implementing this device, the following defects were found: some pesticides are in powder or granular form, which are easy to dissolve incompletely. If these particles enter the pump system or nozzle, they will cause blockage of the pump or nozzle, thus affecting the normal spraying operation of pesticides and limiting its use. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this utility model provides a plant protection pesticide sprayer with a more scientific and reasonable structure, which improves the dissolution speed of granular pesticides, effectively reduces the amount of particulate matter entering the nozzle, and lowers the incidence of nozzle clogging accidents.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a plant protection pesticide sprayer, comprising a pesticide tank, a spraying mechanism, and a supply mechanism. The spraying mechanism includes a support frame and a spray pipe mounted on the support frame, with multiple evenly distributed nozzles installed on the spray pipe. The supply mechanism includes an air pump and an annular pipe installed at the bottom of the pesticide tank. Multiple circumferentially distributed air nozzles are installed on the annular pipe, with the outlet ends of the air nozzles facing upwards towards the center of the annular pipe and arranged clockwise or counterclockwise. The outlet end of the air pump is connected to the inlet end of the annular pipe, and the inlet end of the spray pipe extends into the bottom of the pesticide tank and is located at the center of the annular pipe. Furthermore, the air pump is mounted on the pesticide tank, and the outlet end of the air pump is connected to the annular pipe through a connecting pipe.

[0009] Preferably, an agitator is rotatably installed at the bottom of the liquid tank, and multiple circumferentially distributed blades are installed on the agitator, with the outlet end of the jet nozzle facing the blades.

[0010] Preferably, the agitator impeller is equipped with multiple agitator rods.

[0011] Preferably, a filter screen cover is installed in the middle of the agitator impeller and is rotatably and sealingly connected to the input end of the spray pipe; further, the input end of the spray pipe is rotatably and sealingly connected to the filter screen cover through a mechanical shaft seal or other rotatable sealing connector.

[0012] Preferably, the support frame includes a fixed frame, a first extendable arm, and a second extendable arm. A first rotating support is mounted on the fixed frame. One end of the first extendable arm is mounted on the first rotating support, and the other end of the first extendable arm is mounted on a second rotating support. The second extendable arm is connected to the first extendable arm via the second rotating support. Both the first and second rotating support include an open support base and a fastening bolt rotatably mounted on the open support base. The end of the first extendable arm is rotatably mounted on the fastening bolt on the first rotating support, and the end of the second extendable arm is rotatably mounted on the fastening bolt on the second rotating support. Furthermore, the connection between the open support base and the first or second extendable arm is made of a malleable metal sheet. In the non-use state, the first and second extendable arms can rotate and fold around the first and second rotating support to reduce the space occupied by the support frame. The spray pipe is made of a flexible malleable pipe.

[0013] Preferably, a sealing cap is detachably installed on the top of the medicine tank; further, an automatic pressure relief valve is installed on the sealing cap.

[0014] Preferably, it also includes a back panel and a carrying strap installed on the medicine tank, and a flexible lumbar pad is installed on the back panel.

[0015] (III) Beneficial Effects

[0016] Compared with the prior art, this utility model provides a plant protection pesticide sprayer with the following beneficial effects: The plant protection pesticide sprayer places powdered or granular pesticides into a liquid tank. After the air pump is started, external air is pressurized and injected into the liquid tank through the nozzle on the annular pipe. Due to the injection of pressurized airflow, particles settled at the bottom of the liquid tank are blown to the upper middle part of the tank. The airflow causes the liquid in the tank to be in a swirling state, which accelerates the dissolution of granular pesticides. As airflow is injected, the pressure inside the liquid tank increases, and the dissolved liquid enters the nozzle through the spray pipe and is sprayed outwards. The structure is more scientific and reasonable, improving the dissolution speed of granular pesticides, effectively reducing the amount of particles entering the nozzle, and lowering the incidence of nozzle clogging accidents. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0018] Figure 2 This is a schematic diagram of the front planar structure of this utility model;

[0019] Figure 3 This is the utility model Figure 2 Schematic diagram of the cross-sectional structure at point AA;

[0020] Figure 4 This is the utility model Figure 2 Schematic diagram of the cross-sectional structure at point BB;

[0021] Figure 5 This is a three-dimensional structural diagram of the annular tube and the stirring impeller of this utility model;

[0022] Figure 6 This is the utility model Figure 1 A magnified schematic diagram of the structure at point C in the middle;

[0023] The following are labels in the attached diagram: 1. Medicine tank; 2. Spray pipe; 3. Nozzle; 4. Air pump; 5. Annular pipe; 6. Air nozzle; 7. Agitator impeller; 8. Blade; 9. Agitator rod; 10. Filter screen cover; 11. Fixing frame; 12. First extension arm; 13. Second extension arm; 14. First rotating support; 15. Second rotating support; 16. Opening support; 17. Fastening bolt; 18. Sealing cover; 19. Backrest plate; 20. Back strap; 21. Flexible waist pad. Detailed Implementation

[0024] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0025] As described in the background section, a backpack-type electric low-volume boom sprayer is used for some pesticides that are in powder or granular form and are easily incompletely dissolved. These particles can enter the pump system or nozzle and cause blockages in the pump or nozzle, thus affecting the normal spraying operation of the pesticides and limiting their use.

[0026] To solve this technical problem, this utility model provides a plant protection pesticide spraying machine, which is used for pesticide spraying on crops.

[0027] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0028] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0029] Example 1

[0030] Please refer to Figure 1-4 A crop protection pesticide sprayer includes a pesticide tank 1, a spraying mechanism, and a supply mechanism. The spraying mechanism includes a support frame and a spray pipe 2 mounted on the support frame. Multiple sets of evenly distributed nozzles 3 are installed on the spray pipe 2. The supply mechanism includes an air pump 4 and an annular pipe 5 installed at the bottom of the pesticide tank 1. Multiple circumferentially evenly distributed air nozzles 6 are installed on the annular pipe 5. The outlet end of the air nozzle 6 faces the upper middle part of the annular pipe 5 and is arranged clockwise or counterclockwise. The air outlet end of the air pump 4 is connected to the air inlet end of the annular pipe 5. The inlet end of the spray pipe 2 extends into the bottom of the pesticide tank 1 and is located at the center of the annular pipe 5. Furthermore, the air pump 4 is installed on the pesticide tank 1, and the air outlet end of the air pump 4 is connected to the annular pipe 5 through a connecting pipe.

[0031] For details, please refer to Figure 3-5 A stirring impeller 7 is rotatably installed at the bottom of the liquid tank 1. Multiple circumferentially distributed blades 8 are installed on the stirring impeller 7, and the outlet end of the jet nozzle 6 faces the blades 8.

[0032] For details, please refer to Figure 3 or Figure 5 Multiple agitator rods 9 are installed on the agitator impeller 7.

[0033] For details, please refer to Figure 3 or Figure 5 A filter screen cover 10 is installed in the middle of the agitator impeller 7 and is rotatably and sealingly connected to the input end of the spray pipe 2; furthermore, the input end of the spray pipe 2 is rotatably and sealingly connected to the filter screen cover 10 through a mechanical shaft seal or other rotatable sealing connector.

[0034] For details, please refer to Figure 1 The top of the liquid medicine tank 1 is detachably fitted with a sealing cap 18, and furthermore, an automatic pressure relief valve is installed at the sealing cap 18.

[0035] For details, please refer to Figure 3 It also includes a back panel 19 and a carrying strap 20 installed on the medicine tank 1, with a flexible lumbar pad 21 installed on the back panel 19.

[0036] The plant protection pesticide sprayer provided in this embodiment uses pressurized airflow from the nozzle 6 to act on the blades 8, causing the agitator impeller 7 to agitate the pesticide solution in the pesticide tank 1. The agitator rod 9 further enhances the agitation effect, thereby accelerating the dissolution of the pesticide in the solution and further reducing particulate residue. The filter screen 10 reduces the amount of particulate residue entering the spray pipe 2, preventing blockage of the nozzle 3. The outer wall and top of the filter screen 10 are respectively provided with strip-shaped filter holes arranged axially and radially. Under the action of airflow, the pesticide solution in the pesticide tank 1 flows in a swirling motion, while some of the downward-settling particulate pesticide particles react with the filter screen 10. The collision and contact between the sprayer and the inner wall of the strip filter holes acts like a blade to break down the pesticide particles, further accelerating the dissolution of the granular pesticide and reducing the amount of pesticide residue. The filter screen 10 inside the pesticide tank 1 can be cleaned by opening the sealing cover 18, and the automatic pressure relief valve can ensure that the pesticide tank 1 is under pressure while avoiding excessive pressure inside the pesticide tank 1. The pesticide tank 1 can be carried on the back by the carrying strap 20, and the flexible waist pad 21 can be inserted into the waist of the person carrying it, so that part of the weight of the sprayer is concentrated on the buttocks of the person carrying it through the flexible waist pad 21, reducing the stress on the shoulders and neck and improving the comfort of the person carrying it.

[0037] Example 2

[0038] The plant protection pesticide sprayer provided in Example 1 is further optimized. Specifically, the support frame includes a fixed frame 11, a first extendable arm 12, and a second extendable arm 13. A first rotating support member 14 is installed on the fixed frame 11. One end of the first extendable arm 12 is installed on the first rotating support member 14, and the other end of the first extendable arm 12 is installed on the second rotating support member 15. The second extendable arm 13 is connected to the first extendable arm 12 through the second rotating support member 15. Both the first rotating support member 14 and the second rotating support member 15 include an open support seat 16 and a fastening bolt 17 rotatably installed on the open support seat 16. The end of the first extendable arm 12 is rotatably installed at the fastening bolt 17 on the first rotating support member 14, and the end of the second extendable arm 13 is rotatably installed at the fastening bolt 17 on the second rotating support member 15. Furthermore, the connection between the open support seat 16 and the first extendable arm 12 or the second extendable arm 13 is made of a malleable metal sheet. The spray pipe 2 is made of a flexible malleable pipe.

[0039] In the non-use state, the first arm 12 and the second arm 13 can rotate and fold around the first rotating support 14 and the second rotating support 15 to reduce the space occupied by the support frame. In the use state, the first arm 12 and the second arm 13 can be in a horizontal state or the first arm 12 can be in a horizontal state and the second arm 13 can be in a vertical state to meet the needs of pesticide spraying on multiple working surfaces and improve the applicability of the device. By tightening the fastening bolts 17, the open support seat 16 limits and fixes the first arm 12 or the second arm 13. When the second arm 13 is in a vertical state, vertical pesticide spraying can be performed on trees or tall crops on both sides to improve the uniformity of pesticide contact with crops.

[0040] The process of using the plant protection pesticide sprayer provided by this utility model is as follows: Powdered or granular pesticides are placed into the liquid tank 1. After the air pump 4 is started, the external air is pressurized and injected into the liquid tank 1 through the jet nozzle 6 on the annular pipe 5. Due to the injection of pressurized airflow, the particles settled at the bottom of the liquid tank 1 are blown to the middle and upper part of the liquid tank 1. The airflow can cause the liquid in the liquid tank 1 to be in a swirling state. At the same time, the impeller 7 rotates, and the blades 8 and the stirring rod 9 agitate the liquid. Some of the settled liquid comes into contact with the filter screen 10 and is further broken down. This can accelerate the dissolution of granular pesticides. As the airflow is injected, the pressure in the liquid tank 1 increases. The dissolved liquid enters the nozzle 3 through the spray pipe 2 and is sprayed outward, spraying the pesticide onto the crops.

[0041] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

Claims

1. A plant protection pesticide spraying machine, characterized in that, The utility model provides a liquid medicine spraying device, which comprises a liquid medicine barrel (1), a spraying mechanism and a liquid supply mechanism, wherein the spraying mechanism comprises a support frame and a spraying pipe (2) installed on the support frame, and a plurality of groups of uniformly distributed spray heads (3) are installed on the spraying pipe (2); the liquid supply mechanism comprises an air pump (4) and an annular pipe (5) installed on the bottom of the liquid medicine barrel (1), a plurality of circumferentially distributed air nozzles (6) are installed on the annular pipe (5), the outlet end of the air nozzle (6) is arranged to be inclined towards the upper middle part of the annular pipe (5) in a clockwise or counterclockwise direction, the air outlet end of the air pump (4) is communicated with the air inlet end of the annular pipe (5), and the input end of the spraying pipe (2) extends into the bottom of the liquid medicine barrel (1) and is located at the center of the annular pipe (5).

2. The plant-protection pesticide spraying machine according to claim 1, characterized in that, A stirring impeller (7) is rotatably installed on the bottom of the liquid medicine barrel (1), a plurality of circumferentially distributed blades (8) are installed on the stirring impeller (7), and the outlet end of the air nozzle (6) is directed towards the blades (8).

3. The plant-protection pesticide spraying machine according to claim 2, characterized in that, A plurality of stirring rods (9) are installed on the stirring impeller (7).

4. The plant-protection pesticide spraying machine according to claim 2, characterized in that, A filter screen cover (10) is rotatably and sealingly connected to the input end of the spraying pipe (2) at the middle part of the stirring impeller (7).

5. The plant-protection pesticide spraying machine according to claim 1, characterized in that, The support frame comprises a fixed frame (11), a first extension arm (12) and a second extension arm (13), a first rotating support member (14) is installed on the fixed frame (11), one end of the first extension arm (12) is installed on the first rotating support member (14), a second rotating support member (15) is installed on the other end of the first extension arm (12), the second extension arm (13) is connected to the first extension arm (12) through the second rotating support member (15), the first rotating support member (14) and the second rotating support member (15) each comprise an open support seat (16) and a fastening bolt (17) rotatably installed on the open support seat (16), the end of the first extension arm (12) is rotatably installed on the fastening bolt (17) of the first rotating support member (14), and the end of the second extension arm (13) is rotatably installed on the fastening bolt (17) of the second rotating support member (15).

6. The plant-protection pesticide spraying machine according to claim 1, characterized in that, A sealing cover (18) is detachably installed on the top of the liquid medicine barrel (1).

7. The plant-protection pesticide spraying machine according to claim 1, characterized in that, A back-carrying plate (19) and a back-carrying belt (20) are further installed on the liquid medicine barrel (1), and a flexible waist pad (21) is installed on the back-carrying plate (19).

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