A knapsack sprayer assist device

Abstract

The utility model discloses a kind of knapsack type sprayer auxiliary devices, including cross bar and spray head, the both ends of cross bar are equipped with spray head, cross bar includes support pipe, first connecting pipe and second connecting pipe, first connecting pipe and second connecting pipe are symmetrically slidably connected in support pipe, the outside of first connecting pipe and second connecting pipe end portion is all fixedly connected with fixed sleeve, one end of spray head is connected with communicating pipe, two communicating pipes are respectively communicated with first connecting pipe and second connecting pipe inside, the outside of fixed sleeve is fixedly connected with fixed plate, and the top of fixed plate is fixedly connected with fixed rod, fixed rod is fixedly connected with spray head, the beneficial effects of the utility model: the utility model is operated, pesticide is atomized by spray head and is sprayed back 45 degrees, form fan-shaped mist spray, can effectively cover tobacco plant leaf back, reduce spraying dead angle, and device can easily adapt to a variety of sizes knapsack type sprayer, can flexibly change spraying height and angle according to crop height, satisfy different operation scene needs.

Description

Technical Field

[0001] This utility model relates to the field of agricultural plant protection equipment technology, specifically to an auxiliary device for a backpack sprayer. Background Technology

[0002] In tobacco cultivation, foliar spraying of pesticides or fertilizers is an important means to improve crop yield and quality. However, traditional backpack sprayers have some problems in use, such as the need to adjust the angle and height by hand during spraying, and the need to constantly swing left and right to evenly cover the tobacco plants on both sides while moving. These problems may lead to uneven coverage of pesticides or fertilizers on the tobacco leaves, affecting the control effect and fertilizer utilization rate, increasing labor intensity, and even posing a risk of spraying atomized pesticides onto tobacco farmers. To address these issues, we propose an auxiliary device for backpack sprayers. Utility Model Content

[0003] The purpose of this invention is to provide an auxiliary device for a backpack sprayer to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a backpack sprayer auxiliary device, comprising a crossbar and a nozzle, with nozzles installed at both ends of the crossbar. The crossbar includes a support tube, a first connecting tube, and a second connecting tube. The first and second connecting tubes are symmetrically slidably connected inside the support tube. Fixing sleeves are fixedly connected to the outer sides of the ends of the first and second connecting tubes. One end of the nozzle is connected to a connecting tube, and the two connecting tubes are respectively connected to the interior of the first and second connecting tubes. A fixing plate is fixedly connected to the outer side of the fixing sleeve, and a fixing rod is fixedly connected to the top of the fixing plate. The fixing rod is fixedly connected to the nozzle. Adjustable brackets for adjusting the height of the threaded opening are installed at the bottom of both fixing sleeves.

[0005] Preferably, both ends of the support tube are rotatably connected to rotating sleeves, and the rotating sleeves are provided with internal threads. The outer sides of the first connecting tube and the second connecting tube are provided with external threads, and the first connecting tube and the second connecting tube are respectively threaded into the two rotating sleeves.

[0006] Preferably, the adjustable bracket includes a vertical pole, a support sleeve, a boss, and a support rod. The bottom of the fixed sleeve is fixedly connected to the vertical pole. The support sleeve is slidably arranged on the outer side of the vertical pole. Bosses are symmetrically arranged on the outer side of the support sleeve, and support rods are installed in the bosses. Fixing holes are symmetrically and equidistantly opened on the outer side of the vertical pole. Fastening knobs are symmetrically arranged on the outer side of the support sleeve. The end of the fastening knob is threaded into the fixing hole on the outer side of the vertical pole.

[0007] Preferably, one end of the support rod located inside the boss is symmetrically fixed with a connecting shaft, and the two connecting shafts are rotatably connected to the two bosses through bearings. The surface of the boss is provided with mounting holes at equal intervals on the outer side of the connecting shaft. One end of the support rod located inside the boss is provided with a through hole that mates with the mounting hole. Threaded rods are fitted into the mounting holes and the through holes at the ends of the support rods. Nuts are threadedly connected to both ends of the threaded rod located outside the boss.

[0008] Preferably, both the first connecting pipe and the second connecting pipe have length markings on their outer sides.

[0009] Preferably, a second sealing ring is fixedly connected to the outer side of the first connecting pipe and the second connecting pipe at one end inside the support pipe, and the outer side of the second sealing ring is in close contact with the inner wall of the support pipe.

[0010] Preferably, a first sealing ring is fixed to the top end inside the threaded opening.

[0011] Preferably, the angle between the ends of the first connecting pipe and the second connecting pipe and the nozzle disposed thereon is 45 degrees.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. The length of the crossbar in this invention can be adjusted by rotating the rotating sleeve. Since the first and second connecting pipes are threaded into the rotating sleeve and can slide within the support tube, it can easily adapt to various sizes of backpack sprayers. Simultaneously, the adjustable bracket design is highly flexible; the angle between the support rod and the support sleeve is adjustable, facilitating installation on different negative pressure sprayers. The height of the crossbar can be adjusted by lifting the crossbar and tightening the fastening knob. Combined with the angle adjustment of the support rod within the convex seat, the spraying height and angle can be flexibly changed according to the crop height, meeting the needs of different operating scenarios and effectively improving the adaptability and flexibility of the operation.

[0014] 2. This utility model sets the angle between the nozzle and the ends of the first and second connecting pipes to 45 degrees. During operation, the liquid pesticide enters the crossbar through the pesticide delivery hose under pressure, and after being atomized by the nozzle, it is sprayed out at a 45-degree angle to the rear, forming a fan-shaped mist spray. This can effectively cover the back of the tobacco leaves, expand the spraying range of the liquid pesticide, and reduce spray dead zones. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the adjustable bracket connection structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the internal connection structure of the support tube of this utility model.

[0018] In the diagram: 1. Crossbar; 2. Threaded port; 3. Nozzle; 4. Connecting pipe; 5. Fixing sleeve; 6. Fixing plate; 7. Fixing rod; 8. Adjustable bracket; 9. Support pipe; 10. First connecting pipe; 11. Second connecting pipe; 12. Rotating sleeve; 13. First sealing ring; 14. Second sealing ring; 15. Vertical pole; 16. Support sleeve; 17. Plug; 18. Support rod; 19. Mounting hole; 20. Threaded rod; 21. Fastening knob. Detailed Implementation

[0019] 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.

[0020] Please see Figure 1 and Figure 2 This utility model provides a technical solution: a backpack sprayer auxiliary device, including a crossbar 1 and a nozzle 3. The nozzle 3 is installed at both ends of the crossbar 1. The crossbar 1 includes a support tube 9, a first connecting tube 10 and a second connecting tube 11. The first connecting tube 10 and the second connecting tube 11 are symmetrically slidably connected inside the support tube 9. The outer sides of the ends of the first connecting tube 10 and the second connecting tube 11 are fixedly connected to a fixing sleeve 5. One end of the nozzle 3 is connected to a connecting tube 4. The two connecting tubes 4 are respectively connected to the inside of the first connecting tube 10 and the second connecting tube 11.

[0021] A fixing plate 6 is fixedly connected to the outside of the fixing sleeve 5, and a fixing rod 7 is fixedly connected to the top of the fixing plate 6. The fixing rod 7 is fixedly connected to the nozzle 3. An adjustable bracket 8 for adjusting the height of the threaded opening 2 is installed at the bottom of both fixing sleeves 5.

[0022] Please see Figure 2 Both ends of the support tube 9 are rotatably connected to a rotating sleeve 12, and the rotating sleeve 12 is provided with an internal thread. The outer sides of the first connecting tube 10 and the second connecting tube 11 are provided with external threads. The first connecting tube 10 and the second connecting tube 11 are respectively threaded into the two rotating sleeves 12.

[0023] It should be noted that by rotating the two rotating sleeves 12, the sliding of the first connecting tube 10 and the second connecting tube 11 inside the support tube 9 can be controlled, thereby adjusting the length of the crossbar 1 as needed, and thus adjusting the distance between the two adjustable brackets 8, which can easily adapt to backpack sprayers of various sizes.

[0024] Please see Figure 2The adjustable bracket 8 includes a vertical rod 15, a support sleeve 16, a boss 17, and a support rod 18. The bottom of the fixed sleeve 5 is fixedly connected to the vertical rod 15. The support sleeve 16 is slidably arranged on the outside of the vertical rod 15. The boss 17 is symmetrically arranged on the outside of the support sleeve 16, and the support rod 18 is installed in the boss 17. The outer side of the vertical rod 15 is symmetrically and equidistantly provided with fixing holes. The outer side of the support sleeve 16 is symmetrically provided with fastening knobs 21. The end of the fastening knob 21 is threaded into the fixing hole on the outside of the vertical rod 15.

[0025] It should be noted that when the height of the nozzle 3 needs to be adjusted, the operator only needs to loosen the fastening knob 21, move the support sleeve 16 up and down to the appropriate position, and then tighten the fastening knob 21 to quickly fix the height of the crossbar 1, thereby realizing the height adjustment of the nozzle 3. The operation is simple and easy to understand. When the angle position of the nozzle 3 needs to be adjusted, only one of the support rods 18 needs to be adjusted to rotate inside the protrusion 17, so that after the adjusted support rod 18 is fixed to the negative pressure sprayer, the nozzle 3 will produce the expected angle change, which can better spray pesticides.

[0026] Please see Figure 2 One end of the support rod 18 located inside the boss 17 is symmetrically fixed with a connecting shaft, and the two connecting shafts are rotatably connected to the two bosses 17 through bearings. Mounting holes 19 are equidistantly opened on the surface of the boss 17 on the outer side of the connecting shaft. One end of the support rod 18 located inside the boss 17 is opened with a through hole that mates with the mounting hole 19. Threaded rods 20 are fitted in the mounting hole 19 and the through hole at the end of the support rod 18. Nuts are threadedly connected to both ends of the threaded rod 20 located outside the boss 17.

[0027] It should be noted that, in use, the adjustable brackets 8 at both ends of the crossbar 1 are installed diagonally above the backpack sprayer. The crossbar 1 includes a support tube 9, a first connecting tube 10, and a second connecting tube 11. The first connecting tube 10 and the second connecting tube 11 are slidably disposed inside the support tube 9, and external threads are provided on the outer sides of the first connecting tube 10 and the second connecting tube 11, so that the length of the crossbar 1 can be adjusted by rotating the two rotating sleeves 12 to accommodate various sizes of negative pressure sprayers. The nozzle 3 installed at the ends of the first connecting tube 10 and the second connecting tube 11 is set to an angle of 45 degrees with their end positions. The pesticide delivery hose on the negative pressure sprayer is connected to the threaded port 2. After the end of the hose is connected to the threaded port 2, the end of the pesticide delivery hose contacts the first sealing ring 13, achieving a sealing effect after connection. The operator can spray while walking. During application, the pesticide solution can be pressurized and enter the crossbar 1 through the threaded port 2 via the pesticide delivery hose. It is then transported along the support pipe 9 to the nozzle 3 at the first connecting pipe 10 and the second connecting pipe 11. After atomization, the nozzle 3 sprays out at a 45-degree angle to the rear, forming a fan-shaped mist that effectively covers the back of the tobacco leaves. The two support rods 18 can be adjusted to fit the angle with the support sleeve 16 as needed for convenient and suitable installation on the negative pressure sprayer. By loosening the fastening knob 21 and then lifting the crossbar 1, the height of the crossbar 1 can be adjusted. Then, tightening the fastening knob 21 fixes the height of the crossbar 1 and the nozzle 3. The angle of the support rod 18 within the convex seat 17 can be adjusted flexibly according to the crop height, achieving high-efficiency and directional foliar spraying, improving pesticide utilization, and reducing work intensity and pesticide waste.

[0028] Please see Figure 1 Both the first connecting pipe 10 and the second connecting pipe 11 have length markings on their outer sides.

[0029] It should be noted that when dealing with backpack sprayers of different sizes, operators can directly rotate the rotating sleeve 12 according to the scale indication based on the specific specifications of the sprayer, accurately control the extension and retraction length of the first connecting pipe 10 and the second connecting pipe 11, and quickly adjust the crossbar 1 to the most suitable length, avoiding repeated attempts due to inaccurate adjustment, and greatly improving adjustment efficiency and accuracy.

[0030] Please see Figure 3 The first connecting pipe 10 and the second connecting pipe 11 are both fixed to the outer side of one end inside the support pipe 9 with a second sealing ring 14, and the outer side of the second sealing ring 14 is tightly fitted to the inner wall of the support pipe 9.

[0031] It should be noted that during the operation of the backpack sprayer, the liquid medicine flows inside the crossbar 1 under pressure. The second sealing ring 14 can effectively prevent the liquid medicine from leaking out from the connection gap between the first connecting pipe 10, the second connecting pipe 11 and the support pipe 9, thus avoiding waste of liquid medicine, reducing operating costs, and preventing the leaked liquid medicine from causing pollution and harm to the working environment and personnel. Since the first connecting pipe 10 and the second connecting pipe 11 can slide inside the support pipe 9 to adjust the length of the crossbar 1, relative movement will occur between the connecting pipe and the support pipe 9 during operation. The second sealing ring 14 has good elasticity and sealing performance, and can always maintain a tight fit with the connecting pipe and the support pipe 9 under this dynamic working state, ensuring that the sealing effect is not affected and continuously and effectively preventing liquid medicine leakage.

[0032] Please see Figure 3 The top of the threaded opening 2 is fixed with a first sealing ring 13.

[0033] It should be noted that when the pesticide delivery hose on the negative pressure sprayer is connected to the threaded port 2, there may be microscopic unevenness at the end of the hose and inside the threaded port 2, resulting in a small gap at the connection. After the end of the hose is connected to the inside of the threaded port 2, the end of the hose presses against the surface of the first sealing ring 13. The first sealing ring 13 has good elasticity and fit, which can prevent the pesticide from leaking out from the connection. Whether in static storage or dynamic spraying, it can ensure that the pesticide flows completely within the set channel, avoiding pesticide waste and pollution to the surrounding environment.

[0034] Please see Figure 1 The angle between the ends of the first connecting pipe 10 and the second connecting pipe 11 and the nozzle 3 disposed thereon is 45 degrees.

[0035] It should be noted that the angle between the nozzle 3 and the ends of the first connecting pipe 10 and the second connecting pipe 11 is set to 45 degrees. During operation, the liquid pesticide enters the crossbar 1 through the pesticide delivery hose under pressure, and after being atomized by the nozzle 3, it is sprayed out at a 45-degree angle to the rear, forming a fan-shaped mist. This spraying method can effectively cover the back of the tobacco leaves, expand the spraying range of the liquid pesticide, and reduce the spraying dead corners.

[0036] Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "third," or "fourth" may explicitly or implicitly include at least one of those features.

[0037] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", 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 or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection 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.

[0038] 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. An auxiliary device for a backpack sprayer, characterized in that, The device includes a crossbar (1) and a nozzle (3). Both ends of the crossbar (1) are equipped with nozzles (3). The crossbar (1) includes a support tube (9), a first connecting tube (10), and a second connecting tube (11). The first connecting tube (10) and the second connecting tube (11) are symmetrically slidably connected inside the support tube (9). The outer sides of the ends of the first connecting tube (10) and the second connecting tube (11) are fixedly connected with fixed sleeves (5). One end of the nozzle (3) is connected to a connecting tube (4). The two connecting tubes (4) are respectively connected to the inside of the first connecting tube (10) and the second connecting tube (11). The outer side of the fixed sleeve (5) is fixedly connected with a fixed plate (6), and the top of the fixed plate (6) is fixedly connected with a fixed rod (7). The fixed rod (7) is fixedly connected to the nozzle (3). The bottom of both fixed sleeves (5) is equipped with an adjustable bracket (8) for adjusting the height of the threaded opening (2).

2. The auxiliary device for a backpack sprayer according to claim 1, characterized in that: Both ends of the support tube (9) are rotatably connected to rotating sleeves (12), and the rotating sleeves (12) are provided with internal threads. The first connecting tube (10) and the second connecting tube (11) are provided with external threads on their outer sides. The first connecting tube (10) and the second connecting tube (11) are respectively threaded into the two rotating sleeves (12).

3. The auxiliary device for a backpack sprayer according to claim 1, characterized in that: The adjustable bracket (8) includes a vertical rod (15), a support sleeve (16), a boss (17), and a support rod (18). The bottom of the fixed sleeve (5) is fixedly connected to the vertical rod (15). The support sleeve (16) is slidably arranged on the outside of the vertical rod (15). The boss (17) is symmetrically arranged on the outside of the support sleeve (16), and the support rod (18) is installed in the boss (17). The outer side of the vertical rod (15) is symmetrically and equidistantly provided with fixing holes. The outer side of the support sleeve (16) is symmetrically provided with fastening knobs (21). The end of the fastening knob (21) is threaded into the fixing hole on the outside of the vertical rod (15).

4. The auxiliary device for a backpack sprayer according to claim 3, characterized in that: The support rod (18) is symmetrically fixed to one end of the boss (17) and the two connecting shafts are rotatably connected to the two bosses (17) through bearings. The surface of the boss (17) is provided with mounting holes (19) at equal intervals on the outside of the connecting shaft. The support rod (18) is provided with a through hole that mates with the mounting hole (19) at one end of the boss (17). Threaded rods (20) are fitted in the mounting hole (19) and the through hole at the end of the support rod (18). Nuts are threaded to both ends of the threaded rod (20) located outside the boss (17).

5. The auxiliary device for a backpack sprayer according to claim 1, characterized in that: The first connecting pipe (10) and the second connecting pipe (11) are both provided with length scales on their outer sides.

6. The auxiliary device for a backpack sprayer according to claim 1, characterized in that: The first connecting pipe (10) and the second connecting pipe (11) are both fixed with a second sealing ring (14) on the outer side of one end inside the support pipe (9), and the outer side of the second sealing ring (14) is tightly fitted with the inner wall of the support pipe (9).

7. The auxiliary device for a backpack sprayer according to claim 1, characterized in that: The top end of the threaded opening (2) is fixedly connected to a first sealing ring (13).

8. The auxiliary device for a backpack sprayer according to claim 1, characterized in that: The angle between the ends of the first connecting pipe (10) and the second connecting pipe (11) and the nozzle (3) disposed thereon is 45 degrees.

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