A knapsack pesticide spraying device

Abstract

The utility model relates to pesticide spraying technical field, concretely is a kind of knapsack pesticide spraying device, its solution present knapsack pesticide spraying device's two straps need to be adjusted one by one, and the technical problem of easy length inconsistency, including pesticide spraying box, the strap is installed on pesticide spraying box, rotatably installed with winding shaft on pesticide spraying box, one end of strap is connected with pesticide spraying box, the other end is connected with winding shaft, winding shaft can be wound to strap by rotating, to adjust strap length;Several insertion holes are set on the outer wall of winding shaft along the circumference of winding shaft, fixedly installed with mounting bracket on pesticide spraying box, the plug-in bolt of being installed is installed on mounting bracket, bolt is inserted into insertion hole, to fix winding shaft, hollow housing is installed on pesticide spraying box, housing cover is set to the outside of winding shaft for winding strap part, housing is provided with the through slot for strap, the end of winding shaft extends to the outside of housing and passes out housing, rotatory block is fixedly installed on winding shaft.

Description

Technical Field

[0001] This utility model relates to the field of pesticide spraying technology, specifically a backpack pesticide spraying device. Background Technology

[0002] In the process of agricultural planting, it is necessary to spray pesticides on crops regularly to prevent and control various diseases and pests, ensure the healthy growth of crops, and thus improve the yield and quality of agricultural products.

[0003] Most existing backpack pesticide spraying devices are equipped with a spray box, which can be filled with pesticide solution. The box usually has two shoulder straps to facilitate operation by the operator carrying it in the field. Because operators vary in height and build, their needs for shoulder strap length also differ. Taller, heavier operators often require longer straps, while smaller operators need shorter straps. Appropriate strap length effectively reduces discomfort caused by the weight of the spray box.

[0004] However, when different operators take turns using the spraying device, the two shoulder straps need to be adjusted one by one. This is not only cumbersome and time-consuming, but also prone to inconsistent adjustment lengths between the two shoulder straps. Operators need to make repeated adjustments to make the two shoulder straps the same length, which affects the efficiency of pesticide spraying. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a backpack pesticide spraying device that solves the technical problem that the two shoulder straps of existing backpack pesticide spraying devices need to be adjusted one by one and are prone to inconsistent lengths.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a backpack pesticide spraying device, including a spray box, a carrying strap installed on the spray box, a winding shaft rotatably mounted on the spray box, one end of the carrying strap connected to the spray box, and the other end connected to the winding shaft, the winding shaft being able to rotate to wind the carrying strap to adjust the length of the carrying strap; a plurality of insertion holes are provided on the outer wall of the winding shaft along the circumference of the winding shaft, a mounting frame is fixedly installed on the spray box, and a pluggable pin is installed on the mounting frame, the pin being inserted into the insertion hole to fix the winding shaft.

[0007] Furthermore, the spray box is equipped with a hollow shell, which covers the outside of the part of the winding shaft used to wind the shoulder strap, and the shell has a through groove for the shoulder strap to pass through.

[0008] Furthermore, the end of the winding shaft extends out of the housing and outward from the housing, and a screwing block is fixedly installed on the winding shaft.

[0009] Furthermore, the outer wall of the winding shaft is provided with a raised edge, which blocks both sides of the shoulder strap.

[0010] Furthermore, the mounting bracket has through holes for the pin to pass through.

[0011] Furthermore, a connecting bracket is installed on the mounting bracket, and a pin is slidably installed on the connecting bracket. The sliding pin can pass through the through hole and into the insertion hole.

[0012] Furthermore, the connecting frame has an internal mounting groove, in which a spring is installed. A connecting block is fixedly mounted on the pin, and the spring force acts on the connecting block to provide a driving force for the pin to be inserted into the socket.

[0013] Furthermore, a connecting shaft is mounted on the mounting bracket, and the connecting bracket is rotatably connected to the connecting shaft. The position of the pin can be adjusted by rotating the connecting bracket.

[0014] Furthermore, a guide groove is provided on the outer wall of the mounting bracket, the trajectory of the guide groove matches the path of the pin when it rotates, and the guide groove is arc-shaped.

[0015] Furthermore, a connector is installed on the outer wall of the spray box, and a limiting groove is provided inside the connector for the shoulder strap to pass through.

[0016] Compared with the prior art, this utility model provides a backpack pesticide spraying device, which has the following beneficial effects:

[0017] This backpack pesticide spraying device features a rotating winding shaft mounted on the spray box, with one end of each of the two shoulder straps connected to this shaft. Operators can simultaneously adjust the length of both shoulder straps simply by rotating the shaft, eliminating the need to adjust each strap individually. This effectively prevents inconsistencies in strap length after adjustment, improving the convenience and accuracy of strap length adjustment. Furthermore, the mounting bracket on the spray box is equipped with a removable pin that inserts into a hole on the winding shaft to secure it, thus fixing the adjusted strap length and preventing changes in strap length during operation. This ensures stability for the operator and contributes to improved overall pesticide spraying efficiency. Attached Figure Description

[0018] Figure 1 This is a first three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a schematic diagram of the second three-dimensional structure of the present invention;

[0020] Figure 3This is a three-dimensional structural diagram of the present invention, in which the cover is not installed;

[0021] Figure 4 This is a three-dimensional structural diagram of the present invention, in which the cover and shoulder strap are not installed;

[0022] Figure 5 This is a schematic diagram of the first three-dimensional structure of the winding shaft of this utility model;

[0023] Figure 6 This is a schematic diagram of the second three-dimensional structure of the winding shaft of this utility model;

[0024] Figure 7 This utility model Figure 2 A partially enlarged structural diagram of point A shown in the image;

[0025] Figure 8 This utility model Figure 2 A partially enlarged structural diagram of point B shown in the image;

[0026] Figure 9 This utility model Figure 4 A partially enlarged structural diagram of point C shown in the image;

[0027] Figure 10 This utility model Figure 5 A partially enlarged structural diagram of point D shown in the image;

[0028] Figure 11 This utility model Figure 6 The diagram shows a partially enlarged structural schematic at point E.

[0029] In the diagram: 1. Spraying box; 2. Winding shaft; 3. Shoulder strap; 4. Insertion hole; 5. Mounting bracket; 6. Pin; 7. Housing; 8. Through groove; 9. Twisting block; 10. Raised edge; 11. Through hole; 12. Connecting bracket; 13. Mounting groove; 14. Spring; 15. Connecting block; 16. Connecting shaft; 17. Guide groove; 18. Connector; 19. Limiting groove; 20. Mounting block. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Please see Figure 1This utility model discloses a backpack pesticide spraying device, comprising a spraying tank 1. The spraying tank 1 has a hollow structure, and its internal cavity is used to store a mixture of prepared pesticide and water. An injection port is provided at the top of the spraying tank 1 for injecting the pesticide and water mixture. A cap is fitted onto the injection port to ensure a tight seal and prevent leakage during backpack operation. A connecting pipe is connected to the spraying tank 1, with the other end of the pipe connected to a spraying rod. A nozzle is installed at the end of the spraying rod. During spraying, the pesticide solution in the spraying tank 1 is transported to the spraying rod through the connecting pipe, and finally atomized by the nozzle and sprayed onto the crop surface. The spraying tank 1 of this device can be used for pesticide delivery via electric pressurization or a pump, or it can be manually operated by pressing. To facilitate operation, the spray box 1 is equipped with shoulder straps 3, and there are usually two shoulder straps 3. The two shoulder straps 3 are symmetrically installed on both sides of the spray box 1. The two shoulder straps 3 work together to distribute the weight of the spray box 1 evenly on the operator's shoulders.

[0032] like Figure 2-4 As shown, a winding shaft 2 is rotatably connected to the spray box 1. The specific installation method is as follows: a mounting block 20 is fixedly installed on the spray box 1, and the winding shaft 2 rotatably engages with the mounting block 20, thereby achieving the rotatable connection of the winding shaft 2 on the spray box 1. One end of the shoulder strap 3 is connected to the spray box 1, and the other end is connected to the winding shaft 2. The operator can wind and roll up the shoulder strap 3 by rotating the winding shaft 2, adjusting the length of the shoulder strap 3 to suit the height and body type of different operators. For the two shoulder straps 3 on the spray box 1, one end of each shoulder strap 3 can be connected to the winding shaft 2. By rotating the winding shaft 2, the length of both shoulder straps 3 can be adjusted simultaneously, ensuring that the lengths of the two shoulder straps 3 are consistent after adjustment, eliminating the need for repeated adjustments by the operator due to inconsistent lengths.

[0033] The installation position of the winding shaft 2 can be flexibly selected; it can be set at the top or bottom of the spray box 1, with the top of the spray box 1 being the preferred location. One end of the carrying strap 3 is fixedly connected to the winding shaft 2, and the other end of the carrying strap 3 can be either fixedly connected or detachably connected to the spray box 1. If a detachable connection is used, when the winding shaft 2 is installed at the top of the spray box 1, the end of the carrying strap 3 away from the winding shaft 2 can be detachably connected to the bottom of the spray box 1. This installation method retains the convenience of assembling and disassembling the carrying strap 3 of the traditional spray box 1, and also allows for quick adjustment of the length of the carrying strap 3 through the winding shaft 2.

[0034] like Figure 7 and 10As shown, several insertion holes 4 are provided on the outer wall of the winding shaft 2 along the circumference of the winding shaft 2. A mounting bracket 5 is fixedly installed on the spray box 1, and a pluggable pin 6 is installed on the mounting bracket 5. When the length of the shoulder strap 3 is adjusted to a suitable size, the pin 6 is inserted into the insertion hole 4 to restrict the rotation of the winding shaft 2, thereby fixing the adjusted length of the shoulder strap 3 and preventing the shoulder strap 3 from becoming loose or changing length during the spraying operation.

[0035] like Figure 1 and 8 As shown, the spray box 1 is equipped with a hollow shell 7, and a cover is placed over the part of the winding shaft 2 used to wind the shoulder strap 3. The shell 7 has a through groove 8 for the shoulder strap 3 to pass through. The cover can protect the winding shaft 2 and the winding part of the shoulder strap 3, and can effectively prevent the medicine from being accidentally spilled on the shoulder strap 3 when adding medicine.

[0036] The end of the winding shaft 2 extends out of the housing 7 and outward from the housing 7, and a screwing block 9 is fixedly installed at this end. The operator can directly grasp the screwing block 9 to apply force to rotate the winding shaft 2.

[0037] like Figure 5-6 As shown, the outer wall of the winding shaft 2 is provided with raised edges 10, which are respectively positioned on both sides of the shoulder strap 3. During the process of rotating the winding shaft 2 to adjust the winding of the shoulder strap 3, the raised edges 10 on both sides can limit the side of the shoulder strap 3, so that the shoulder strap 3 is always kept in the area between the two raised edges 10 for winding, effectively preventing the shoulder strap 3 from shifting laterally during winding and preventing the shoulder strap 3 from becoming messy or tangled.

[0038] like Figure 7 As shown, the mounting bracket 5 has a through hole 11 for the pin 6 to pass through, and the pin 6 can be inserted and removed along the axial direction of the through hole 11. To further improve the stability of the pin 6 installation and make the operation more convenient, a connecting bracket 12 is installed on the mounting bracket 5. The pin 6 is slidably installed on the connecting bracket 12, and the sliding direction of the pin 6 is parallel to the axial direction of the through hole 11. When it is necessary to fix the winding shaft 2, the operator pushes the pin 6, and the pin 6 can slide smoothly along the guide of the connecting bracket 12, pass smoothly through the through hole 11 and insert into the insertion hole 4, thereby completing the fixation of the winding shaft 2; when it is necessary to adjust the length of the shoulder strap 3, the pin 6 is pulled in the opposite direction to disengage it from the insertion hole 4, thereby releasing the fixation of the winding shaft 2, and the length of the shoulder strap 3 can be adjusted by rotating the winding shaft 2.

[0039] like Figure 7 and 10As shown in Figure -11, the connecting bracket 12 has an internal mounting groove 13, in which a spring 14 is installed. A connecting block 15 is fixedly mounted on the pin 6. The elastic force of the spring 14 acts on the connecting block 15, providing the driving force for the pin 6 to be inserted into the socket 4. The spring 14 can be a compression spring or a tension spring. If a tension spring is used, one end of the tension spring is fixedly connected to the inner wall of the mounting groove 13, and the other end is fixedly connected to the connecting block 15. The tension of the tension spring pulls the connecting block 15 (at this time, the connecting block 15 is located at the top), causing the pin 6 to move towards the socket 4. If a compression spring is used, one end of the compression spring abuts against the inner wall of the mounting groove 13, and the other end abuts against the connecting block 15. The elastic support force generated after the compression spring is compressed (at this time, the connecting block 15 is located at the bottom) pushes the connecting block 15 to move the pin 6 towards the socket 4, thus driving the pin 6 to move into the socket.

[0040] like Figure 10-11 As shown, a connecting shaft 16 is mounted on the mounting bracket 5, and the connecting bracket 12 is rotatably connected to the connecting shaft 16. The operator can adjust the position of the pin 6 by rotating the connecting bracket 12. A guide groove 17 is provided on the outer wall of the mounting bracket 5. The trajectory of the guide groove 17 matches the rotation path of the pin 6, and the guide groove 17 has an overall arc-shaped structure. When it is necessary to adjust the length of the shoulder strap 3, first remove the pin 6 from the insertion hole 4 of the winding shaft 2, and then rotate the connecting bracket 12 so that the pin 6 enters the guide groove 17 and is misaligned with the through hole 11. The pin 6 will not automatically insert into the insertion hole 4, and the operator can smoothly rotate the winding shaft 2 to adjust the length of the shoulder strap 3. When the length of the shoulder strap 3 is adjusted to the appropriate size, rotate the connecting bracket 12 in the opposite direction so that the pin 6 aligns with the through hole 11. Under the driving force of the spring 14, the pin 6 will pass through the through hole 11 and insert into the insertion hole 4, thus completing the fixation of the winding shaft 2.

[0041] like Figure 9 As shown, a connector 18 is installed on the outer wall of the spray box 1, and a limiting groove 19 is provided inside the connector 18 for the carrying strap 3 to pass through. The connector 18 can be made of high-strength materials such as iron or hard plastic, and has good structural stability and load-bearing capacity. During the operation of the operator carrying the spray box 1, the connector 18 can provide a stable fixation for the carrying strap 3, while the limiting groove 19 can constrain the position of the carrying strap 3, effectively preventing the carrying strap 3 from shifting laterally during the carrying process.

[0042] In summary, when using this backpack pesticide spraying device, the operator first pulls the pin 6 out of the insertion hole 4 of the winding shaft 2 to release the winding shaft 2 from its fixation; then, the operator holds and rotates the screw block 9 to drive the winding shaft 2 to rotate synchronously, thereby synchronously winding or releasing the two shoulder straps 3 to adjust the length of the shoulder straps 3 and ensure that the lengths of the two shoulder straps 3 remain consistent; after the length of the shoulder straps 3 is adjusted to the appropriate length, the pin 6 is inserted into the corresponding insertion hole 4 on the outer wall of the winding shaft 2 to fix the winding shaft 2 and lock the length of the shoulder straps 3; finally, the operator carries the spraying box 1 on their back to carry out pesticide spraying operations in the field.

[0043] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A backpack pesticide spraying device, comprising a spraying box (1) and a carrying strap (3) mounted on the spraying box (1), characterized in that: A winding shaft (2) is rotatably mounted on the spray box (1). One end of the shoulder strap (3) is connected to the spray box (1), and the other end is connected to the winding shaft (2). The winding shaft (2) can wind the shoulder strap (3) by rotating to adjust the length of the shoulder strap (3). Several insertion holes (4) are provided on the outer wall of the winding shaft (2) along the circumference of the winding shaft (2). A mounting bracket (5) is fixedly mounted on the spray box (1). A plug-in pin (6) is installed on the mounting bracket (5). The pin (6) is inserted into the insertion hole (4) to fix the winding shaft (2).

2. The backpack pesticide spraying device according to claim 1, characterized in that: The spray box (1) is equipped with a hollow shell (7), which covers the part of the winding shaft (2) used to wind the shoulder strap (3). The shell (7) has a through groove (8) for the shoulder strap (3) to pass through.

3. The backpack pesticide spraying device according to claim 2, characterized in that: The end of the winding shaft (2) extends out of the housing (7) and out of the housing (7), and a screwing block (9) is fixedly installed on the winding shaft (2).

4. The backpack pesticide spraying device according to claim 1, characterized in that: The outer wall of the winding shaft (2) is provided with a raised edge (10), which blocks the sides of the shoulder strap (3).

5. The backpack pesticide spraying device according to claim 1, characterized in that: The mounting bracket (5) has a through hole (11) for the pin (6) to pass through.

6. The backpack pesticide spraying device according to claim 5, characterized in that: A connecting bracket (12) is installed on the mounting bracket (5), and a pin (6) is slidably installed on the connecting bracket (12). The sliding pin (6) can pass through the through hole (11) and into the socket (4).

7. The backpack pesticide spraying device according to claim 6, characterized in that: The connecting frame (12) has an installation groove (13) inside, and a spring (14) is installed in the installation groove (13). A connecting block (15) is fixedly installed on the pin (6). The elastic force of the spring (14) acts on the connecting block (15) to provide driving force for the pin (6) to be inserted into the socket (4).

8. The backpack pesticide spraying device according to claim 6 or 7, characterized in that: A connecting shaft (16) is mounted on the mounting bracket (5). The connecting bracket (12) is rotatably connected to the connecting shaft (16). The position of the pin (6) can be adjusted by rotating the connecting bracket (12).

9. The backpack pesticide spraying device according to claim 7, characterized in that: The outer wall of the mounting bracket (5) is provided with a guide groove (17), the trajectory of the guide groove (17) matches the path of the pin (6) when it rotates, and the guide groove (17) is arc-shaped.

10. The backpack pesticide spraying device according to any one of claims 1-7, characterized in that: A connector (18) is installed on the outer wall of the spray box (1), and a limiting groove (19) for the shoulder strap (3) to pass through is provided inside the connector (18).

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