Drip-proof electric sprayer

Abstract

A drip-proof electric sprayer comprises a cylindrical hollow handle and a miniature water pump arranged in the cylindrical hollow handle, a water pump fixing base capable of being pulled out is arranged in the cylindrical hollow handle in a penetrating mode, and baffle structures completely matched with the two ends of the cylindrical hollow handle in shape are arranged at the two ends of the water pump fixing base. A sealing ball body covering the inner water inlet end is elastically supported at the inner water inlet end of the anti-backflow cylinder through a light spring, the water outlet end of the micro water pump is fixedly communicated with a spraying head arranged at the top end of the water pump fixing base through a hose, and the water inlet end of the micro water pump is communicated with the water outlet end of the anti-backflow cylinder through a hose; and a bottom end cover penetrated by the water inlet pipe covers and is screwed at the lower end of the cylindrical hollow handle. The medicine sprayer can effectively prevent medicine from dripping out of the sprayer when the sprayer is closed, medicine waste can be effectively avoided, the medicine can be prevented from flowing out and making contact with a human body, and health risks caused by sprayed medicine and the like are effectively reduced.

Description

Technical Field

[0001] This utility model relates to an electric sprayer, specifically a drip-proof electric sprayer. Background Technology

[0002] An electric sprayer is an agricultural machine that uses electricity to evenly spray liquid pesticides or water onto crops, plants, or other target surfaces. It plays a vital role in modern agriculture. Electric sprayers can quickly and evenly distribute pesticides or water mist to target areas, ensuring crops receive adequate protection or irrigation. Their spraying efficiency is far higher than traditional manual sprayers, reducing farmers' labor intensity and increasing work efficiency. Because electric sprayers can precisely control the spray volume, they avoid pesticide waste and environmental pollution. By optimizing the spraying method, they can also reduce water consumption, conserving water resources. Electric sprayers are typically equipped with adjustable nozzles, allowing for adjustments to the spray particle size and coverage area according to different crops, pests, and environmental conditions, thereby improving pest and disease control effectiveness. Electric sprayers are suitable for various crops and plants, handling both precise operations in greenhouses and extensive field spraying. Furthermore, they can be used in horticulture, forestry, public health, and other fields.

[0003] Utility model patent CN221832635U discloses a slanted electric sprayer, including a pot body, a pot lid, and a spraying assembly. The spraying assembly includes a nozzle, a water pipe, a pump body, a first power source, and a housing. The pump body and the first power source are housed within the housing. The two ends of the water pipe connect to the inlets of the pot body and the pump body, and the nozzle connects to the outlet of the pump body. It also includes a charging device. The charging interface of the first power source protrudes from the housing. The charging device includes a storage structure, a charging cable, and a second power source. The second power source is located on the pot lid. One end of the charging cable connects to the second power source, and the other end is a charging plug. The storage structure is used to store the charging cable. If the first power source is out of power, the charging cable can be used to power the first power source from the second power source, thereby extending the usage time of the electric sprayer. However, currently, even after the sprayer is turned off, some pesticide residue remains in the nozzle and pipes, causing pesticide to drip from the nozzle. This not only results in pesticide wastage but also poses a significant safety hazard if the spilled pesticide comes into contact with the human body. Utility Model Content

[0004] To address the aforementioned problems, the purpose of this invention is to provide a drip-proof electric sprayer.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows: a drip-proof electric sprayer, comprising a cylindrical hollow handle and a miniature water pump disposed inside the cylindrical hollow handle. A removable water pump mounting base is inserted through the cylindrical hollow handle. Both ends of the water pump mounting base are provided with baffle structures whose shapes perfectly match the ends of the cylindrical hollow handle. The water pump mounting base is fixed with the miniature water pump and the anti-backflow cylinder by a snap-fit ​​structure. The internal water inlet of the anti-backflow cylinder is elastically supported by a lightweight spring and has a sealing ball covering the internal water inlet. The water outlet of the miniature water pump is fixedly connected to the spray head disposed at the top of the water pump mounting base via a hose. The water inlet of the miniature water pump is connected to the water outlet of the anti-backflow cylinder via a hose. The water outlet of the anti-backflow cylinder is connected to the water inlet pipe at the lower end of the water pump mounting base via a hose. The lower end of the cylindrical hollow handle is covered with a bottom end cap that is screwed through by the water inlet pipe. The lower end of the water pump mounting base is in close contact with the inner side of the bottom end cap.

[0006] Furthermore, the water pump mounting base is provided with retaining strips on its periphery. The retaining strips are arranged along the axial direction of the cylindrical hollow handle, and the retaining strips are just locked in the limiting grooves on the inner side wall of the cylindrical hollow handle.

[0007] Furthermore, the water pump mounting base is also fixed with a circuit board with a switch, which controls the micro water pump. The pressing part of the switch is located on the switch button part of the cylindrical hollow handle, and the switch button part of the cylindrical hollow handle is covered with a waterproof rubber pad.

[0008] Furthermore, a rechargeable battery for powering the miniature water pump is installed inside the water pump mounting base. The rechargeable battery is electrically connected to the power management module of the circuit board, and the circuit board is electrically connected to the charging interface provided by the bottom baffle structure through wires.

[0009] Furthermore, the internal water inlet of the anti-backflow cylinder is equipped with a rubber sealing ring, and under normal conditions, a light spring causes the sealing ball to cover the rubber sealing ring.

[0010] Furthermore, the baffle structures at both ends are respectively equipped with pipe joints, which are fixedly connected to the corresponding spray heads and water inlet pipes, and the inner ends of the pipe joints at both ends are fixedly connected to the corresponding hoses.

[0011] Furthermore, the bottom end cap of the charging interface is provided with a charging port, and the charging port is covered with a waterproof rubber plug.

[0012] This invention features a water inlet pipe that connects to a container via a flexible hose. The container can be worn on the waist or back, or moved by a trolley, allowing for the use of larger containers. The handheld component is lightweight and easy to hold for extended periods. Pressing a switch (such as a push-button switch or touch-sensitive switch) activates a miniature water pump, creating suction that overcomes the spring force of a lightweight spring to push open the sealing sphere. This allows the liquid in the container to be sprayed through the water inlet pipe, the anti-backflow cylinder, the miniature water pump, and the spray nozzle. When the switch is closed, the sealing sphere inside the anti-backflow cylinder rebounds through the lightweight spring, covering the inner end of the anti-backflow cylinder again, thus sealing the cylinder and forming an anti-backflow structure. This effectively prevents medication from dripping from the spray nozzle when it is closed, thus avoiding medication waste and preventing medication from coming into contact with the body, effectively reducing the health risks associated with sprayed medications. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0014] Figure 2 This is a three-dimensional structural diagram of the handle portion of this utility model;

[0015] Figure 3 This is a three-dimensional structural diagram of the internal flexible tube arrangement in the handle part of this utility model;

[0016] Figure 4 This is a three-dimensional structural diagram of the cylindrical hollow handle of this utility model;

[0017] Figure 5 This is a three-dimensional cross-sectional structural diagram of the anti-backflow cylinder of this utility model. Detailed Implementation

[0018] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0019] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0020] The following is a detailed description of this embodiment with reference to the accompanying drawings:

[0021] This embodiment provides a drip-proof electric sprayer; please refer to the accompanying drawings in the instruction manual. Figure 1-5 .

[0022] like Figure 1-5 As shown, a drip-proof electric sprayer includes a cylindrical hollow handle 1 and a miniature water pump 2 disposed inside the cylindrical hollow handle 1. A removable water pump mounting base 3 passes through the cylindrical hollow handle 1. Both ends of the water pump mounting base 3 are equipped with baffle structures 4 whose shapes perfectly match the ends of the cylindrical hollow handle 1. The miniature water pump 2 and an anti-backflow cylinder 5 are respectively fixed to the water pump mounting base 3 by a snap-fit ​​structure. The internal water inlet of the anti-backflow cylinder 5 is elastically supported by a lightweight spring 6, and a sealing ball 7 covering the internal water inlet is provided. A rubber sealing ring 16 is provided, and under normal conditions, a light spring 6 causes the sealing ball 7 to cover the rubber sealing ring 16. The water outlet of the micro water pump 2 is fixedly connected to the spray head 8 at the top of the water pump fixing base 3 through a hose. The water inlet of the micro water pump 2 is connected to the water outlet of the anti-backflow cylinder 5 through a hose. The water outlet of the anti-backflow cylinder 5 is connected to the water inlet pipe 9 at the lower end of the water pump fixing base 3 through a hose. The lower end of the cylindrical hollow handle 1 is covered with a bottom end cap 10 that is pierced by the water inlet pipe 9. The lower end of the water pump fixing base 3 is in close contact with the inner side of the bottom end cap 10.

[0023] The water pump mounting base 3 is provided with a retaining strip on its periphery. The retaining strip is arranged along the axial direction of the cylindrical hollow handle 1, and the retaining strip is just locked in the limiting groove 11 on the inner side wall of the cylindrical hollow handle 1. The water pump mounting base 3 is also fixed with a circuit board 13 with a switch 12. The micro water pump 2 is controlled by the switch 12. The pressing part of the switch 12 is correspondingly set at the switch button part of the cylindrical hollow handle 1, and the switch button part of the cylindrical hollow handle 1 is covered with a waterproof rubber pad.

[0024] The water pump mounting base 3 is equipped with a rechargeable battery 14 that powers the micro water pump 2. The rechargeable battery 14 is electrically connected to the power management module of the circuit board 13. The circuit board 13 is electrically connected to the charging interface 15 provided on the bottom baffle structure 4 through wires. The bottom end cap 10 of the charging interface 15 is provided with a charging port, and the charging port is covered with a waterproof rubber plug 18. The baffle structures 4 at both ends are respectively provided with pipe connectors 17, which are fixedly connected to the corresponding spray head 8 and water inlet pipe 9 through the pipe connectors 17. The inner ends of the pipe connectors 17 at both ends are fixedly connected to the corresponding hoses.

[0025] The working principle of this utility model is as follows: The water inlet pipe 9 can be connected to the container through a flexible hose. The container can be hung on the waist or back, or moved by a trolley, allowing for the use of larger containers. The handheld part is very lightweight and easy to hold for a long time. When the switch 12 is pressed, such as a push-button switch or a touch circuit switch, the micro water pump 2 works to generate suction force, which overcomes the elastic force of the light spring 6 (this elastic force is small) and pushes open the sealing ball 7. The liquid in the container is sprayed out through the water inlet pipe 9, the anti-backflow cylinder 5, the micro water pump 2, and the spray head 8. When the switch 12 is closed, the sealing ball 7 in the anti-backflow cylinder 5 rebounds through the light spring 6 and covers the inner end of the anti-backflow cylinder 5 again, thereby sealing the anti-backflow cylinder 5 and forming an anti-backflow structure, effectively preventing the liquid from flowing out of the water outlet of the anti-backflow cylinder 5, the micro water pump 2, and the spray head 8.

[0026] Of course, the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A drip-proof electric sprayer, comprising a cylindrical hollow handle (1) and a miniature water pump (2) disposed within the cylindrical hollow handle (1), characterized in that: A removable water pump mounting base (3) runs through the cylindrical hollow handle (1). Both ends of the water pump mounting base (3) are equipped with baffle structures (4) whose shape perfectly matches the ends of the cylindrical hollow handle (1). The water pump mounting base (3) is secured to a miniature water pump (2) and an anti-backflow cylinder (5) via a snap-fit ​​structure. The internal water inlet of the anti-backflow cylinder (5) is elastically supported by a lightweight spring (6) and a sealing sphere (7) covering the internal water inlet. The water outlet of the miniature water pump (2) is connected to… The spray head (8) at the top of the water pump mounting base (3) is fixedly connected through the hose. The water inlet of the micro water pump (2) is connected to the water outlet of the anti-backflow cylinder (5) through the hose. The water outlet of the anti-backflow cylinder (5) is connected to the water inlet pipe (9) at the bottom of the water pump mounting base (3) through the hose. The bottom of the cylindrical hollow handle (1) is covered with a bottom end cap (10) that is pierced by the water inlet pipe (9). The bottom of the water pump mounting base (3) is in close contact with the inner side of the bottom end cap (10).

2. The anti-drip electric sprayer according to claim 1, characterized in that: The water pump mounting base (3) is provided with a retaining strip on its periphery. The retaining strip is arranged along the axial direction of the cylindrical hollow handle (1), and the retaining strip is just locked in the limiting groove (11) on the inner side wall of the cylindrical hollow handle (1).

3. The anti-drip electric sprayer according to claim 1, characterized in that: The water pump mounting base (3) is also fixed with a circuit board (13) with a switch (12). The micro water pump (2) is controlled by the switch (12). The pressing part of the switch (12) is set on the switch button part of the cylindrical hollow handle (1), and the switch button part of the cylindrical hollow handle (1) is covered with a waterproof rubber pad.

4. The drip-proof electric sprayer according to claim 3, characterized in that: The water pump mounting base (3) is equipped with a rechargeable battery (14) that powers the micro water pump (2). The rechargeable battery (14) is electrically connected to the power management module of the circuit board (13). The circuit board (13) is electrically connected to the charging interface (15) set in the bottom baffle structure (4) through wires.

5. A drip-proof electric sprayer according to claim 1, characterized in that: The internal water inlet of the anti-backflow cylinder (5) is equipped with a rubber sealing ring (16), and under normal conditions, a light spring (6) causes the sealing ball (7) to cover the rubber sealing ring (16).

6. The anti-drip electric sprayer according to claim 1, characterized in that: The baffle structure (4) at both ends is provided with pipe joints (17), which are fixedly connected to the corresponding spray head (8) and water inlet pipe (9) respectively. The inner ends of the pipe joints (17) at both ends are fixedly connected to the corresponding hoses respectively.

7. A drip-proof electric sprayer according to claim 4, characterized in that: The bottom end cap (10) of the charging interface (15) is provided with a charging port, and the charging port is covered with a waterproof rubber plug (18).

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