An easy-to-operate electrically started sprayer

Abstract

This utility model discloses a user-friendly electrically started sprayer, including a backpack frame, a medicine tank, and a spraying device. The medicine tank and spraying device are mounted on the backpack frame. A control area is located on the left side of the backpack frame, containing a throttle switch and an engine shutdown switch. The spraying device atomizes and sprays the liquid from the medicine tank. The spraying device includes an engine, and the sprayer also includes an electric starter for controlling engine startup. The electric starter includes a starter motor and a starter mount. The starter motor is connected to the engine crankshaft. The starter mount is located in the control area and has a start button for controlling the starter motor. The start button is located near the engine shutdown switch and throttle switch. The starter mount also has a battery pack mounting section. Compared with the prior art, the advantage of this utility model is that after stopping the sprayer midway, the user does not need to remove the heavy machine; the restart operation can be completed with one hand while carrying it, eliminating the physical exertion and bending required by pulling the rope.

Description

Technical Field

[0001] This utility model relates to the field of sprayer technology, and in particular to an electric start sprayer that is easy to operate. Background Technology

[0002] Backpack sprayers are widely used pesticide application equipment in agricultural plant protection. They atomize pesticide solution using a liquid pump and spray it evenly onto the crop surface, offering high mobility and efficiency. Traditional backpack sprayers typically consist of a pesticide tank, engine, liquid pump, spray boom, and carrying strap system. Users can carry the entire machine on their backs for mobile operation in the field, making them suitable for large-scale crop pest and disease control. This type of equipment is significant in improving agricultural production efficiency and reducing labor intensity, especially in complex terrains such as hilly areas and greenhouses, where it plays an irreplaceable role.

[0003] For example, the invention patent "Anti-drip backpack sprayer" with patent publication number CN118142745A has an external hand-pulled rope design for its engine starting system. When starting the engine, the starting rope needs to be pulled to ignite the engine, and then the whole machine needs to be carried on the back again.

[0004] However, the aforementioned existing technologies have significant drawbacks in actual field operations: when users need to stop and restart the machine midway, they must disassemble the entire machine to complete the rope pulling operation and then carry it again, a process that is time-consuming and laborious; especially for the elderly or those with weaker physical strength, frequent loading and unloading can easily cause lumbar muscle injuries. In addition, when field roads are narrow and muddy, it is often necessary to walk to the field ridge to place the machine, delaying the operation. Utility Model Content

[0005] This invention addresses the problem that restarting an existing sprayer requires disassembling the entire machine, pulling the rope, and then carrying it again. The technical problem this invention aims to solve is to provide an electric start sprayer that is easy to use and can be started immediately after stopping.

[0006] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: it includes a back frame, a medicine storage tank, and a spraying device. The medicine storage tank and the spraying device are mounted on the back frame. The spraying device is used to spray out the liquid in the medicine storage tank. The spraying device includes an engine. A control area is provided on the left side of the back frame. The control area is provided with a throttle switch and a kill switch to control the engine to stop. The sprayer also includes an electric starter for controlling the engine to start. The electric starter includes a starter motor and a starter base. The starter motor is connected to the crankshaft of the engine. The starter base is located in the control area. The starter base is provided with a start button for controlling the starter motor to start. The start button is located near the kill switch and the throttle switch. The starter base is also provided with a battery pack mounting part. The battery pack is detachably mounted on the battery pack mounting part to provide power to the starter motor. The starter motor drives the crankshaft to rotate to start the engine.

[0007] A further preferred embodiment of this utility model is as follows: a column is provided on the left front side of the back frame, the column has a mounting groove arranged in the vertical direction, and a connector is provided at the bottom of the starter seat. The starter seat extends into the mounting groove through the connector and is fixedly connected to the column.

[0008] A further preferred embodiment of this utility model is: the battery pack is electrically connected to the starter motor through line one, the line one consists of two sections, and the ends of the two sections of wires are connected by quick-connect connectors to make the circuit one conductive.

[0009] A further preferred embodiment of this utility model is as follows: a mounting base is provided on the left front side of the back frame, the throttle switch and the ignition stop switch are provided on the mounting base, and the starter is located diagonally above the rear side of the mounting base.

[0010] A further preferred embodiment of this utility model is that the start button is located between the ignition switch and the battery pack.

[0011] A further preferred embodiment of this utility model is: the ignition switch is connected to the igniter in the engine through a second circuit, the second circuit consists of two sections, and the ends of the two sections of wires are connected by quick-connect connectors to make the second circuit conductive.

[0012] A further preferred embodiment of this utility model is as follows: the starter seat has an upward-facing vertical slot, guide ribs are provided on both sides of the slot, the vertical slot and the guide ribs form the battery pack mounting part, the battery pack has a guide groove at a corresponding position that cooperates with the guide ribs, the starter seat has a locking groove, the battery pack has an elastic latch that cooperates with the locking groove, and an unlocking button for controlling the unlocking of the elastic latch.

[0013] A further preferred embodiment of this utility model is: the starter seat has an extension portion extending forward of the back frame, and the start button is fixed on the extension portion.

[0014] A further preferred embodiment of this utility model is that: there are at least two connectors, which are arranged vertically along the length of the column.

[0015] Compared with the prior art, the present invention has the following advantages: 1. By installing a starter mount, battery pack, and start button on the back frame, the start button controls the starter motor, and the battery pack supplies power to the starter motor. After stopping the machine midway, the user does not need to remove the heavy machine. The machine can be started with one button while being carried. This significantly reduces non-operation waiting time, allowing the user to seize the best opportunity for pest and disease control. It is especially suitable for complex operating environments that require frequent start and stop.

[0016] 2. The electric start method completely eliminates the physical exertion and bending over required for pulling the rope, making the sprayer easier and more user-friendly to operate, and expanding the range of people who can use it.

[0017] 3. By fixing the start button to the starter mount and placing it near the ignition stop switch and throttle switch, this design conforms to the user's original operating habits, making operation more convenient and faster. Attached Figure Description

[0018] The present invention will be further described in detail below with reference to the accompanying drawings and preferred embodiments. However, those skilled in the art will understand that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be regarded as a limitation on the scope of the present invention. In addition, unless otherwise specified, the drawings are only schematic representations of the composition or structure of the described objects and may contain exaggerated displays, and the drawings are not necessarily drawn to scale.

[0019] Figure 1 This is a schematic diagram of the rear three-dimensional structure of a preferred embodiment of the present invention; Figure 2 This is a three-dimensional structural diagram of the left rear side of a preferred embodiment of the present invention; Figure 3 This is a partial three-dimensional structural diagram of the left side of a preferred embodiment of the present invention; Figure 4 This is a three-dimensional structural diagram of the preferred embodiment of the present invention after the starter base, battery pack, and start button are installed. Figure 1 ; Figure 5 This is a three-dimensional structural diagram of the preferred embodiment of the present invention after the starter base, battery pack, and start button are installed. Figure 2 ; Figure 6 This is a three-dimensional structural diagram of the starter base according to a preferred embodiment of the present invention; Figure 7 This is a three-dimensional structural diagram of the battery pack according to a preferred embodiment of the present invention.

[0020] In the diagram: 1. Back frame; 2. Medicine storage tank; 3. Engine; 4. Column; 41. Mounting slot; 51. Mounting base; 52. Throttle switch; 53. Fire stop switch; 6. Starter mount; 61. Connector; 62. Slot; 64. Lock slot; 65. Guide rib; 66. Extension; 7. Battery pack; 71. Guide groove; 72. Elastic latch; 73. Unlock button; 8. Start button; 9. Line 1; 10. Quick connector; 11. Line 2. Detailed Implementation

[0021] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Those skilled in the art will appreciate that these descriptions are merely descriptive and exemplary and should not be construed as limiting the scope of protection of the present invention.

[0022] It should be noted that similar labels in the following figures indicate similar items; therefore, once an item is defined in one figure, it may not be further defined and explained in subsequent figures.

[0023] This embodiment mainly describes an easy-to-operate electrically started sprayer, as detailed below: like Figures 1 to 7 This invention discloses an easy-to-operate electrically started sprayer, comprising a back frame 1, a medicine storage tank 2, and a spraying device. Both the medicine storage tank 2 and the spraying device are mounted on the back frame 1, with the medicine storage tank 2 located at the front of the back frame 1, forming a stable backpack-style structure. A dedicated control area is provided on the left side of the back frame 1, where a throttle switch 52 and an engine stop switch 53 for controlling the spraying device are centrally located, facilitating one-handed operation. The spraying device includes an engine 3. The specific structure of the spraying device can be found in patent document CN223234084U; the spraying device in this invention corresponds to the spraying components described in that document.

[0024] like Figures 1 to 3 As shown, the innovation of this utility model lies in the addition of an electric starter for controlling the starting of the engine 3. This electric starter consists of a starter motor and a starter base 6. The starter motor is directly connected to the crankshaft of the engine 3, specifically through a direct connection of the motor output shaft to the engine crankshaft, a gear transmission connection, or a synchronous belt transmission connection. When the start button 8 is pressed, the starter motor operates under the power of the battery pack 7, directly driving the crankshaft of the engine 3 to rotate. The flywheel fixed to the crankshaft rotates synchronously. The magnet on the flywheel, during rotation, interacts with the ignition magneto fixed to the engine 3, causing it to cut magnetic field lines. This magnetic change induces a current in the coil inside the ignition coil. This current is transmitted to the spark plug of the engine 3, ultimately generating an electric spark to ignite the air-fuel mixture, thus achieving reliable starting of the engine 3. The starter base 6 is fixed within the control area. The starter base 6 is equipped with a starter button 8 for controlling the starter motor. This starter button 8 is arranged adjacent to the ignition stop switch 53 and the throttle switch 52, forming a centralized control area. The starter mount 6 also features a battery pack mounting section, on which the battery pack 7 is detachably mounted to provide the power required for starting the starter motor. When the start button 8 is pressed, the battery pack 7 supplies power to the starter motor, which drives the crankshaft to rotate, thus starting the engine 3 quickly and effortlessly. The entire process requires no pre-pumping of oil or pulling of ropes and can be completed while the engine is being carried. Pressing the start button 8 instantly ignites the engine, completely avoiding the hassle of disassembling the machine required by the traditional hand-pulled starter method. It also avoids back muscle injuries caused by frequent loading and unloading for the elderly or those with weaker physical strength, making it particularly suitable for field operations that require frequent starts and stops.

[0025] Specifically, a column 4 is pre-installed on the left front side of the back frame 1. The column 4 has a vertically oriented mounting groove 41 for easy installation, such as... Figure 6 and Figure 7 As shown, the bottom of the starter base 6 is provided with a connector 61 that can extend into the mounting groove 41. In one installation method, the connector 61 has a threaded hole. After the connector 61 slides into the mounting groove 41, a screw passes through the column 4 and is screwed into the threaded hole to fix the starter base 6 to the column 4. In another installation method, the connector 61 has a through hole. A bolt passes through the column 4 and the through hole in sequence, and a nut is tightened at the end to fix the starter base 6. This utility model cleverly mounts the starter base 6 on the column, saving space and making the overall machine structure compact and aesthetically pleasing, while ensuring that the starter base 6 will not loosen under bumpy field conditions.

[0026] like Figure 2 As shown, battery pack 7 is electrically connected to starter motor via line 9. Line 9 consists of two sections, with the ends of the two wires connected by quick-connect connectors 10 to establish circuit continuity. Specifically, one wire extends from battery pack 7, and the other wire extends from starter motor. The ends of both sections are fitted with matching quick-connect connectors 10, which connect the two sections to establish circuit continuity. This quick-connect design facilitates on-site assembly and maintenance of the equipment. When disassembly or replacement of components is required, the circuit can be quickly disconnected or connected, improving ease of use and maintenance efficiency.

[0027] Specifically, a mounting base 51 is located on the left front side of the back frame 1. The throttle switch 52 and the ignition stop switch 53 are mounted on the mounting base 51. The starter 6 of this invention is located diagonally above the rear side of the mounting base 51, and the start button 8 is located between the ignition stop switch 53 and the battery pack 7. The positions of the throttle switch 52 and the ignition stop switch 53 in this invention are the same as those in existing products. This arrangement allows users to quickly locate the ignition stop switch 53 and the throttle switch 52 when encountering sudden abnormalities or needing to stop the machine urgently after work. At the same time, the starter 6 being located diagonally above the rear side of the mounting base 51 allows users to quickly locate the start button 8. This design concentrates the main control switches of the engine 3 in the same area on the left side of the back frame 1, forming a complete and compact operation panel together with the start button 8. Users can complete all operations such as starting, adjusting speed, and stopping without having to move their arms or fumble around, greatly improving the smoothness of operation and work efficiency.

[0028] Specifically, the ignition stop switch 53 is electrically connected to the ignition device inside the engine 3 via line 2 11. Line 2 11 also adopts a two-section quick-connect structure, with one section of wire leading out from the ignition stop switch 53 body and the other section connected to the ignition device. This design allows the quick-connect connector 10 to be split in two simply by pulling it outwards when disassembling the engine 3, thus instantly separating the ignition stop switch 53 from the ignition device. This prevents the entire wiring harness from being pulled apart while moving with the engine 3, protecting the wiring and shortening disassembly time. At the same time, the segmented structure allows after-sales service to flexibly replace the corresponding length of wire segment according to different models.

[0029] like Figure 6 As shown, the starter mount 6 has an upward-facing vertical slot 62, and guide ribs 65 are provided on both sides of the slot 62. The vertical slot 62 and the guide ribs 65 form the aforementioned battery pack mounting portion. Figure 7 As shown, the battery pack 7 has a guide groove 71 that mates with the guide rib 65 at a corresponding position. The starter seat 6 has a locking groove 64, and the battery pack 7 has an elastic latch 72 that mates with the locking groove 64. During installation, the battery pack 7 slides down the guide rib 65 from top to bottom. When it reaches the bottom, there is a "click" sound, and the elastic latch 72 engages with the locking groove 64 and locks automatically. The battery pack 7 has an unlocking button 73 for unlocking the elastic latch 72. When the battery pack 7 needs to be replaced, press the unlocking button 73 to disengage the elastic latch 72 from the locking groove 64, and the battery pack 7 can be pulled upwards. The entire disassembly and assembly process does not require visual inspection and can be completed with one hand while carrying the battery pack. The cooperation between the aforementioned elastic latch 72 and the locking groove 64 ensures that the elastic latch 72 can withstand the impact load generated by the weight of the battery pack 7 and field vibrations, regardless of whether the machine is upright, sideways, or completely upside down, preventing it from sliding out in the opposite direction. Only by actively pressing the unlock button 73 can the lock be released. Therefore, even if the machine is accidentally tipped over or upside down, the battery pack 7 will still be reliably locked and will not fall off on its own, ensuring safe use in the field.

[0030] Specifically, to further shorten the operation path, the front of the starter base 6 has an extension 66 that extends forward toward the back frame 1, and the start button 8 is fixed on the extension 66. This cantilever design brings the start button 8 closer to the ignition switch 53, making the structure more compact and the operation more convenient. At the same time, this solution places the start button 8 on the starter base 6, which significantly shortens the wiring between the start button 8 and the battery pack 7, making the overall structure simpler and more aesthetically pleasing.

[0031] Specifically, to improve the stability of the starter seat 6, the starter seat 6 has at least two connectors 61, preferably two, and they are arranged vertically along the length of the column 4. The connectors 61 can be inserted into the mounting slots 41 and fixed to the column 4 with screws or bolts.

[0032] Through the synergistic effect of the above embodiments, this utility model, while retaining the original high mobility and high work efficiency of the backpack sprayer, simplifies the most frequent and laborious operation of "starting" to "one-button start," truly achieving "no need to remove the machine from the shoulder, no need for personnel to bend over, and instant start," significantly reducing labor intensity and improving the timeliness of field prevention and control. It is especially suitable for the elderly and those with weaker physical strength, as well as for continuous operation needs in complex terrains such as hills and greenhouses.

[0033] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. 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.

[0034] The present invention provides a detailed description of an easy-to-operate electrically started sprayer. Specific examples have been used to illustrate the principle and implementation of the present invention. The description of the above embodiments is only for the purpose of helping to understand the present invention and its core ideas. It should be noted that for those skilled in the art, several improvements and modifications can be made to the present invention without departing from the principle of the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A user-friendly electrically started sprayer, comprising a back frame, a medicine storage tank, and a spraying device, wherein the medicine storage tank and the spraying device are mounted on the back frame, the spraying device is used to spray liquid from the medicine storage tank, the spraying device includes an engine, and a control area is provided on the left side of the back frame, the control area including a throttle switch and an engine stop switch for controlling engine shutdown, characterized in that: The sprayer also includes an electric starter for controlling engine start-up. The electric starter includes a starter motor and a starter mount. The starter motor is connected to the crankshaft of the engine. The starter mount is located in the control area. The starter mount is provided with a start button for controlling the starter motor. The start button is located near the ignition switch and throttle switch. The starter mount is also provided with a battery pack mounting part. The battery pack is detachably mounted on the battery pack mounting part to provide power to the starter motor. The starter motor drives the crankshaft to rotate to start the engine.

2. The electrically started sprayer with convenient operation according to claim 1, characterized in that: A column is located on the left front of the back frame. The column has a vertical mounting groove. The bottom of the starter seat has a connector. The starter seat extends into the mounting groove through the connector and is fixedly connected to the column.

3. The electrically started sprayer with convenient operation according to claim 1, characterized in that: The battery pack is electrically connected to the starter motor via line one. Line one consists of two sections, and the ends of the two wires are connected by quick-connect connectors to make the circuit one conductive.

4. A convenient electrically started sprayer according to claim 1 or 3, characterized in that: The back frame is provided with a mounting base on the left front side, the throttle switch and the engine stop switch are located on the mounting base, and the starter is located diagonally above the rear side of the mounting base.

5. The electrically started sprayer with convenient operation according to claim 4, characterized in that: The start button is located between the ignition switch and the battery pack.

6. The electrically started sprayer with convenient operation according to claim 4, characterized in that: The ignition switch is connected to the igniter in the engine via line two. Line two consists of two sections, and the ends of the two wires are connected by quick-connect connectors to make the circuit two conductive.

7. The electrically started sprayer with convenient operation according to claim 1, characterized in that: The starter has an upward-facing vertical slot, and guide ribs are provided on both sides of the slot. The vertical slot and guide ribs form the battery pack mounting part. The battery pack has a guide groove that cooperates with the guide ribs at a corresponding position. The starter has a locking groove, and the battery pack has an elastic latch that cooperates with the locking groove, as well as an unlocking button for controlling the unlocking of the elastic latch.

8. The electrically started sprayer with convenient operation according to claim 1, characterized in that: The starter base has an extension that extends forward toward the back frame, and the start button is fixed to the extension.

9. The electrically started sprayer with convenient operation according to claim 2, characterized in that: The connector has at least two parts and is arranged vertically along the length of the column.

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