A special spraying device for spraying pesticides on the underside of citrus leaves
By designing an adjustable-length sprayer and a fan atomization function, the problem of uneven spraying on tall fruit trees in citrus spraying devices has been solved, achieving efficient and uniform spraying effect on the back of citrus leaves.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGXI ORANGE GROWERS SAID AGRI TECH CO LTD
- Filing Date
- 2025-08-04
- Publication Date
- 2026-06-30
Smart Images

Figure CN224419877U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of citrus technology, and in particular to a special spraying device for spraying pesticides on the back of citrus leaves. Background Technology
[0002] Citrus is a general term for plants of the genus Citrus in the family Rutaceae, including oranges, grapefruits, lemons, tangerines, and mandarins. It is one of the world's most important economic fruit crops and requires spraying pesticides on the underside of the leaves to prevent and control pests and diseases.
[0003] Patent CN222425162U discloses a fruit tree sprayer. It includes a pesticide container assembly with a spraying component mounted at its bottom and a stirring component installed inside. The pesticide container assembly includes a support block with a foldable water tank fixedly connected to its top and a shoulder strap fixedly connected to its sides. When using this patent, the user wears the shoulder strap on their back, holds the support tube, and activates a micro-pump to draw pesticide from the foldable water tank through the inlet pipe. The pesticide is then sprayed onto the fruit trees through the outlet pipe, support pipe, external nozzle, and top nozzle. However, when spraying taller fruit trees, the aforementioned patent requires the worker to manually extend their arm to raise the nozzle position. Maintaining a stable arm height and force for an extended period is difficult, leading to inconsistent spray height, angle, and distance, resulting in excessive pesticide in some areas and insufficient pesticide in others.
[0004] Therefore, there is a need for a special spraying device for spraying pesticides on the back of citrus leaves that can adjust the extension length of the sprayer. Utility Model Content
[0005] To overcome the shortcomings of existing patents, which require workers to manually extend their arms to raise the nozzle position when spraying taller fruit trees, and the difficulty of maintaining a stable arm height and force for a long time, resulting in inconsistent spray height, angle and distance, thus causing excessive pesticide in some areas and insufficient pesticide in others, this utility model provides a special spraying device for spraying the back of citrus leaves that can adjust the extension length of the sprayer.
[0006] To address the aforementioned issues, this utility model employs the following technical solution: a special spraying device for the underside of citrus leaves, comprising a storage tank, a delivery pipe, a mounting sleeve, a sprayer, and a water pump. The water pump is mounted on the storage tank, and the delivery pipe is connected to the water pump. The mounting sleeve is fitted onto the delivery pipe, and the sprayer is mounted on the delivery pipe. The device also includes a mounting base, a locking block, a sliding base, a sliding rod, and an elastic element. The mounting base is fixedly connected to the mounting sleeve, the sliding base is mounted on the delivery pipe, the sliding rod is slidably mounted on the sliding base, the locking block is fixedly connected to the sliding rod, and the elastic element is fitted onto the sliding rod. The two ends of the elastic element are respectively connected to the locking block and the sliding base.
[0007] To further explain, it also includes an installation cylinder, a blower, and a filter screen. The sprayer is equipped with two installation cylinders, each containing a blower and a filter screen.
[0008] To further explain, it also includes a placement plate, sliding sleeves, and sockets. The placement plate is fixedly connected to the storage box, two sliding sleeves are attached to the placement plate, and a socket is plugged into the placement plate.
[0009] To further explain, it also includes a carrying strap; the storage box has two carrying straps.
[0010] To further explain, it also includes a first protective cover, which is threaded onto the storage box.
[0011] To further explain, it also includes a second protective cover, which is threaded onto the mounting cylinder.
[0012] Compared with the prior art, the present invention has the following technical effects: 1. By pushing the slide upward, the slide moves the delivery pipe and the sprayer upward. After moving to the appropriate height, the slide rod is released, and the elastic element rebounds and drives the slide rod and the locking block to reset, so that the locking block is locked into the mounting base, thereby adjusting the extension length of the sprayer to adapt to citrus leaves of different heights, and without requiring the operator to excessively extend their arm.
[0013] 2. By starting the fan, the airflow generated by the fan atomizes the liquid and enhances its penetration, ensuring that the liquid can evenly cover the back of the blades.
[0014] 3. By placing the mounting sleeve inside the placement plate, and then snapping the two sliding sleeves onto the placement plate to clamp the mounting sleeve, the socket can be inserted into the placement plate to fix the mounting sleeve on the placement plate, thus facilitating storage and transportation. Attached Figure Description
[0015] Figure 1 This is a three-dimensional structural diagram of the present invention.
[0016] Figure 2 This is a three-dimensional cross-sectional view of the storage box and conveying pipe components of this utility model.
[0017] Figure 3 This is a three-dimensional structural diagram of the mounting base, slide block, and slide rod of this utility model.
[0018] Figure 4 This is a three-dimensional cross-sectional view of the components of this utility model, including the slide bar, locking block, and elastic element.
[0019] Figure 5 This is a three-dimensional sectional view of the components of this utility model, including the mounting cylinder, fan, and filter.
[0020] Figure 6 This is a three-dimensional sectional view of the components of this utility model, including the placement plate, sliding sleeve, and socket.
[0021] In the attached diagram: 1-Storage box, 2-First protective cover, 3-Shoulder strap, 4-Delivery pipe, 5-Mounting sleeve, 6-Sprayer, 7-Water pump, 8-Mounting base, 9-Slide base, 10-Slide rod, 11-Clamping block, 12-Elastic element, 13-Mounting cylinder, 14-Fan, 15-Filter screen, 16-Second protective cover, 17-Placement plate, 18-Slide sleeve, 19-Socket. Detailed Implementation
[0022] The present invention will be further described below with reference to specific embodiments. The illustrative embodiments and descriptions of the present invention are used to explain the present invention, but are not intended to limit the present invention.
[0023] Example 1
[0024] A special spraying device for spraying pesticides on the underside of citrus leaves, see 1- Figure 6 As shown in the figure, the device includes a storage tank 1, a delivery pipe 4, a mounting sleeve 5, a sprayer 6, and a water pump 7. The water pump 7 is bolted to the lower front of the storage tank 1. The delivery pipe 4 is connected to the water pump 7. The delivery pipe 4 is a flexible hose. The mounting sleeve 5 is fitted in the middle of the delivery pipe 4. The sprayer 6 is installed at the end of the delivery pipe 4. The device also includes a mounting base 8, a locking block 11, a slide block 9, a slide rod 10, and an elastic element 12. The mounting base 8 is welded to the front of the mounting sleeve 5. The slide block 9 is installed on the delivery pipe 4. The slide rod 10 is slidably installed at the lower part of the slide block 9. The locking block 11 is welded to the end of the slide rod 10. The elastic element 12 is fitted on the slide rod 10. The two ends of the elastic element 12 are connected to the locking block 11 and the slide block 9, respectively. The mounting base 8 has multiple evenly spaced locking holes. The locking block 11 is inserted into the adjacent locking holes.
[0025] See Figure 2 As shown, it also includes a shoulder strap 3, and two shoulder straps 3 are provided on the rear side of the storage box 1.
[0026] See Figure 1 and Figure 2 As shown, it also includes a first protective cover 2, which is threaded onto the top of the storage box 1.
[0027] When using this device, first unscrew the first protective cover 2, then fill the storage box 1 with an appropriate amount of pesticide solution. Next, screw the first protective cover 2 back into place to prevent pesticide evaporation or the entry of external impurities, while also facilitating pesticide addition. Then, use the carrying strap 3 for easy movement within the orchard. Holding the mounting sleeve 5, pull the sliding rod 10 outwards. The sliding rod 10 causes the locking block 11 to move outwards and disengage from the mounting base 8, compressing the elastic element 12. Then, push the sliding seat 9 upwards, causing the conveying pipe 4 and the sprayer 6 to move upwards. Once at the appropriate height, release the sliding rod 10. The elastic element 12 then rebounds, causing the sliding rod 10 and locking block 11 to reset, allowing the locking block 11 to engage with the mounting base 8. This adjusts the extension length of the sprayer 6 to accommodate citrus leaves of different heights, eliminating the need for workers to excessively extend their arms. When spraying is required, start the water pump 7. The water pump 7 delivers the pesticide solution through the conveying hose to the sprayer 6, which then sprays the solution onto the back of the citrus leaves.
[0028] Example 2
[0029] Based on Example 1, see [link to Example 1] Figure 5 As shown, it also includes an installation cylinder 13, a blower 14, and a filter screen 15. The sprayer 6 is provided with installation cylinders 13 on both the front and rear sides. The blower 14 is installed inside the installation cylinder 13 by means of bolt connection. The filter screen 15 is installed on the installation cylinder 13 and is located outside the blower 14.
[0030] See Figure 1 and Figure 5 As shown, it also includes a second protective cover 16, which is threaded onto the mounting cylinder 13.
[0031] When spraying pesticides, unscrew the second protective cover 16 and start the fan 14. When the fan 14 is working, it generates airflow, which atomizes the pesticide and enhances its penetration, ensuring that the pesticide can evenly cover the back of the blades. The filter screen 15 prevents debris from entering the fan 14 and avoids pesticide splashing that pollutes the environment.
[0032] See Figure 1 and Figure 6 As shown, it also includes a placement plate 17, a sliding sleeve 18, and a socket 19. The placement plate 17 is fixedly connected to the lower right side of the storage box 1. The mounting sleeve 5 is located inside the placement plate 17. Two sliding sleeves 18 are attached to the placement plate 17, and the sliding sleeves 18 abut against the mounting sleeve 5. The socket 19 is plugged into the placement plate 17 and blocks the opening on the placement plate 17.
[0033] After spraying, place the mounting sleeve 5 inside the placement plate 17, then clip the two sliding sleeves 18 onto the placement plate 17 so that the sliding sleeves 18 clamp the mounting sleeve 5. Then insert the socket 19 into the placement plate 17 to fix the mounting sleeve 5 onto the placement plate 17, thus facilitating storage and transportation. When it is necessary to remove it, first remove the sliding sleeves 18 and the socket 19, and then remove the mounting sleeve 5.
[0034] The above description is merely an embodiment of this utility model and is not intended to limit the scope of this utility model. All equivalent substitutions made within the principles of this utility model should be included within the protection scope of this utility model. Contents not described in detail in this utility model are existing technologies known to those skilled in the art.
Claims
1. A special spraying device for spraying pesticides on the back of citrus leaves, comprising a storage tank (1), a delivery pipe (4), a mounting sleeve (5), a sprayer (6), and a water pump (7), wherein the water pump (7) is installed on the storage tank (1), the delivery pipe (4) is connected to the water pump (7), the mounting sleeve (5) is fitted on the delivery pipe (4), and the sprayer (6) is installed on the delivery pipe (4), characterized in that, It also includes a mounting base (8), a locking block (11), a slide (9), a slide rod (10), and an elastic element (12). The mounting base (8) is fixedly connected to the mounting sleeve (5), the slide (9) is provided on the conveying pipe (4), the slide rod (10) is slidably provided on the slide (9), the locking block (11) is fixedly connected to the slide rod (10), and the elastic element (12) is sleeved on the slide rod (10). The two ends of the elastic element (12) are respectively connected to the locking block (11) and the slide (9).
2. The special spraying device for spraying pesticides on the underside of citrus leaves according to claim 1, characterized in that, It also includes an installation cylinder (13), a blower (14) and a filter screen (15). The sprayer (6) is provided with two installation cylinders (13), a blower (14) is installed inside the installation cylinder (13), and a filter screen (15) is provided on the installation cylinder (13).
3. The special spraying device for spraying pesticides on the underside of citrus leaves according to claim 2, characterized in that, It also includes a placement plate (17), a sliding sleeve (18) and a socket (19). The storage box (1) is fixedly connected to the placement plate (17), and two sliding sleeves (18) are attached to the placement plate (17). The placement plate (17) is plugged into the socket (19).
4. A special spraying device for spraying pesticides on the underside of citrus leaves according to claim 3, characterized in that, It also includes a carrying strap (3), and the storage box (1) is equipped with two carrying straps (3).
5. A special spraying device for spraying pesticides on the underside of citrus leaves according to claim 4, characterized in that, It also includes a first protective cover (2), which is threaded onto the storage box (1).
6. A special spraying device for spraying pesticides on the underside of citrus leaves according to claim 5, characterized in that, It also includes a second protective cover (16), which is threaded onto the mounting cylinder (13).