Liquid fertilizer injection device for a fertilizer tank truck

Abstract

The present application relates to a kind of liquid fertilizer injection device suitable for fertilizing tank truck, belong to agricultural machinery field, including a fertilizer pipeline, the rear end of the fertilizer pipeline is provided with fertilizing tank truck interface, front end is provided with spray head;Wherein, organic liquid fertilizer is stored in fertilizing tank truck, fertilizing tank truck interface is used to with fertilizing tank truck and receives the organic liquid fertilizer in the fertilizing tank truck, spray head is used to the organic liquid fertilizer in fertilizer pipeline is injected outward;Rotary mechanism is provided on the fertilizer pipeline, rotary mechanism can make spray head relative to the rotary motion of the rear end of fertilizer pipeline, for realizing the organic liquid fertilizer is injected outward in the form of rotation;Fertilizer pipeline is also provided with pitch adjusting mechanism, pitch adjusting mechanism can make the spray head upward or downward, for realizing the organic liquid fertilizer is injected outward at the angle of elevation or depression angle.

Description

Technical Field

[0001] This invention relates to the field of agricultural machinery technology, and specifically to a liquid fertilizer spraying device suitable for fertilizer tank trucks. Background Technology

[0002] In agricultural production, arable land type has a significant impact on crop cultivation and soil management. Plain arable land, due to its flat terrain, is ideally suited for large-scale agricultural machinery for cultivation and crop management. This not only improves operational efficiency but also facilitates precision fertilization and irrigation, thereby ensuring the stability and sustainability of food production. Furthermore, mechanized operations in plain areas can reduce labor costs and increase crop yield and quality.

[0003] In contrast, arable land in mountainous and hilly areas faces even greater challenges. The complex terrain and steep slopes of these areas limit the use of agricultural machinery, making soil improvement and crop management more difficult. Particularly when spraying organic liquid fertilizers, the difficulty of machinery reaching these areas necessitates increased manual labor for transporting the fertilizer to the affected land, increasing both labor intensity and production costs. Therefore, for agricultural production in mountainous and hilly areas, it is necessary to explore agricultural technologies and management methods more adapted to the terrain to improve soil structure, increase soil fertility and crop yields, and achieve sustainable organic farming.

[0004] In summary, there is currently a lack of equipment that can deliver organic liquid fertilizer to designated land without requiring manual handling. Summary of the Invention

[0005] To address the aforementioned problems, the purpose of this invention is to provide a liquid fertilizer spraying device suitable for fertilizer tank trucks, thereby solving the current lack of equipment that can transport organic liquid fertilizer to designated land without requiring manual handling.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] This invention discloses a liquid fertilizer spraying device suitable for fertilizer tankers, including a fertilizer conveying pipeline, wherein the rear end of the fertilizer conveying pipeline is provided with a fertilizer tanker docking interface and the front end is provided with a nozzle;

[0008] The fertilizer tanker contains organic liquid fertilizer, the fertilizer tanker docking port is used to connect with the fertilizer tanker and receive the organic liquid fertilizer in the fertilizer tanker, and the nozzle is used to spray the organic liquid fertilizer in the fertilizer delivery pipeline outward.

[0009] The fertilizer delivery pipeline is equipped with a rotating mechanism, which enables the nozzle to rotate relative to the rear end of the fertilizer delivery pipeline, thereby spraying organic liquid fertilizer outward in a rotating manner.

[0010] The fertilizer delivery pipeline is also equipped with a pitch adjustment mechanism, which allows the nozzle to tilt upwards or downwards, thereby spraying the organic liquid fertilizer outwards at an angle of elevation or depression.

[0011] Preferably, the fertilizer delivery pipeline includes a fertilizer tanker docking section, a bend section, and an elevation adjustment section. The fertilizer tanker docking section is connected to the rear end of the bend section via the rotating mechanism. The front end of the bend section and the nozzle are respectively connected to both ends of the elevation adjustment section, thereby forming a continuous fertilizer delivery pipeline.

[0012] Preferably, the bottom port and top port of the rotating mechanism are respectively equipped with a fixed flange and a rotating flange, and the rear end of the fertilizer tanker docking pipe section is provided with a fertilizer tanker docking interface for docking with the fertilizer tanker, and the front end is fixedly connected to the fixed flange of the rotating mechanism.

[0013] The pitch adjustment pipe section is provided with a left flange and a right flange at both ends, the rear end of the bend pipe section is fixed on the rotating flange of the rotating mechanism, and the front end is connected to the left flange of the pitch adjustment pipe section through a flange.

[0014] The nozzle is equipped with a nozzle connecting pipe, and a flange is provided at the rear end of the nozzle connecting pipe. The flange at the rear end of the nozzle connecting pipe is connected to the right flange of the pitch adjustment pipe section through a flange.

[0015] The pitch adjustment mechanism is installed on the pitch adjustment pipe section.

[0016] Preferably, the rotating mechanism includes a cylindrical body, a fixed flange, a rotating flange, and a transmission mechanism.

[0017] The fixed flange and the rotating flange are respectively fixedly and movably sleeved on the lower and upper outer sides of the cylinder;

[0018] The transmission mechanism includes a motor, and the transmission shaft of the motor is fixedly connected to the rotating flange.

[0019] The fertilizer pipeline includes a fertilizer tanker docking section and a bend section. The fertilizer tanker docking section is connected by a fixed flange, and the bend section is connected by a rotating flange. The fertilizer tanker docking section and the bend section are connected by the cylinder of a rotating mechanism.

[0020] When the motor is started, the motor's power is transmitted to the rotating flange, which rotates relative to the fixed flange, thereby adjusting the spray direction of the liquid fertilizer spraying device.

[0021] Preferably, the transmission mechanism further includes a worm and a worm wheel, the drive shaft of the motor is connected to the worm, and the worm and the worm wheel are meshed by gears;

[0022] The rotary flange includes a flange portion and a vertical cylindrical portion, wherein the end of the flange portion is perpendicularly connected to the vertical cylindrical portion and integrally formed;

[0023] The rotating flange is movably sleeved on the outer side of the upper part of the cylinder through the vertical cylinder section;

[0024] The flange portion of the rotating flange is located above the worm gear, and the worm gear is fixedly connected to the flange portion of the rotating flange by bolts.

[0025] Preferably, a worm gear transmission box is disposed outside the worm gear;

[0026] The inner wall of the vertical cylindrical part of the rotary flange is provided with a lubricating oil hole, which is connected to the gap between the vertical cylindrical part of the rotary flange and the cylindrical body. A lubricating oil nozzle is provided in the lubricating oil hole, and the lubricating oil nozzle faces the worm gear transmission box.

[0027] The rotating mechanism is also equipped with a lubricating oil sealing assembly.

[0028] Bearings are respectively installed at both ends between the worm and the worm gear transmission box.

[0029] The lubricating oil sealing assembly includes a circular sealing ring, a sealing gasket, and a star-shaped cross-section sealing ring. The circular sealing ring and the star-shaped cross-section sealing ring are disposed between the side wall of the bearing and the worm gear transmission box, and the circular sealing ring and the star-shaped cross-section sealing ring are separated by a sealing gasket.

[0030] A lip-shaped sealing ring is provided at both ends of the gap between the vertical cylindrical part of the rotary flange and the cylindrical body.

[0031] Preferably, the rotating mechanism is further equipped with a liquid fertilizer sealing device.

[0032] The liquid fertilizer sealing device includes an inner liquid fertilizer sealing assembly and an outer liquid fertilizer sealing assembly.

[0033] The internal liquid fertilizer sealing assembly includes a first inner sealing ring and a second inner sealing ring.

[0034] The port of the flange portion of the rotary flange extends toward the center of the cylinder to form an inner flange. A sealing ring groove is provided on the upper end face of the cylinder. The inner flange of the outer port of the rotary flange and the sealing ring groove of the upper port of the cylinder form a notched closed annular groove. A first inner sealing ring and a second inner sealing ring are provided in the closed annular groove. The second inner sealing ring includes a horizontal part and a vertical part. The end of the horizontal part and the end of the vertical part are vertically fixedly connected.

[0035] The vertical part of the second inner sealing ring is close to the first inner sealing ring, and the horizontal part of the second inner sealing ring is located at the notch of the sealed annular groove.

[0036] The external liquid fertilizer sealing assembly includes a first external sealing ring and a second external sealing ring.

[0037] Flanges are welded to both ends of the bend, and the flange at the bottom of the bend is connected to the flange of the rotary flange.

[0038] The outer wall of the flange portion of the rotary flange is provided with an outer sealing ring groove, and a first outer sealing ring and a second outer sealing ring are provided in the outer sealing ring groove. The second outer sealing ring includes a horizontal part and a vertical part, and the ends of the horizontal part and the vertical part are vertically fixedly connected.

[0039] The vertical part of the second outer sealing ring is close to the first outer sealing ring, and the horizontal part of the second outer sealing ring is disposed on the outer wall of the flange portion of the rotary flange, for sealing the connection between the flange portion of the rotary flange and the flange at the bottom end of the bend section.

[0040] Preferably, the pitch adjustment mechanism is disposed on the pitch adjustment pipe section and includes a corrugated pipe.

[0041] An upper push rod is disposed above the bellows.

[0042] The upper push rod is a telescopic rod that can extend forward or retract backward. The upper push rod is equipped with a stepper motor. When the output shaft of the stepper motor moves forward, the upper push rod extends forward, causing the nozzle to tilt forward so as to spray the organic liquid fertilizer outward at a downward angle. When the output shaft of the stepper motor moves backward, the upper push rod retracts backward, causing the nozzle to tilt backward so as to spray the organic liquid fertilizer outward at an upward angle.

[0043] Preferably, a left-handed arm and a right-handed arm are respectively arranged on the left and right sides of the bellows;

[0044] Both the left and right rotating arms include a left link and a right link, and the left link and the right link are pivotally connected by a pivot.

[0045] Once the front end of the bellows bends relative to the rear end, the left and right links of the left and right rotating arms simultaneously bend toward the pivot, guarding the left and right sides of the bellows to prevent it from shifting to the left or right.

[0046] Preferably, the nozzle includes a distribution head, a distribution head adjusting disc, and a frustum-shaped nozzle pipe.

[0047] The dispensing head has a hemispherical groove inside, and the groove wall of the hemispherical groove has multiple fertilizer dispensing areas and multiple non-fertilizer dispensing areas. The fertilizer dispensing area is densely covered with a number of fertilizer dispensing holes.

[0048] The adjusting disc of the dispensing head is a circular disc, and the dispensing head adjusting disc is provided with multiple solid parts and empty parts, which are spaced apart, and the multiple solid parts and empty parts correspond to the multiple fertilizer dispensing areas and non-fertilizer dispensing areas of the dispensing head respectively.

[0049] The frustum-shaped nozzle is larger at the left end and smaller at the right end.

[0050] The front end of the distribution head and the rear end of the frustum-shaped nozzle pipe are rotatably mounted at both ends of the distribution head adjusting plate, with the front end of the frustum-shaped nozzle pipe exposed as a nozzle. This ensures that by rotating the distribution head adjusting plate, multiple solid and hollow parts of the adjusting plate can be aligned with or offset from multiple fertilizer outlet zones and multiple non-fertilizer outlet zones on the wall of the hemispherical groove of the distribution head. When the multiple hollow parts of the distribution head adjusting plate are aligned with the multiple fertilizer outlet zones on the wall of the hemispherical groove of the distribution head, the nozzle is fully conductive; when the multiple hollow parts of the distribution head adjusting plate are offset from the multiple fertilizer outlet zones on the wall of the hemispherical groove of the distribution head, the nozzle is not fully conductive, thereby achieving adjustment of the liquid fertilizer spray flow rate.

[0051] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0052] (I) This invention discloses a liquid fertilizer spraying device suitable for fertilizer tankers, comprising a fertilizer conveying pipeline, wherein a fertilizer tanker docking interface is provided at the rear end of the fertilizer conveying pipeline and a nozzle is provided at the front end; wherein, the fertilizer tanker stores organic liquid fertilizer, the fertilizer tanker docking interface is used to connect with the fertilizer tanker and receive the organic liquid fertilizer in the fertilizer tanker, and the nozzle is used to spray the organic liquid fertilizer in the fertilizer conveying pipeline outward; a rotating mechanism is provided on the fertilizer conveying pipeline, which enables the nozzle to rotate relative to the rear end of the fertilizer conveying pipeline, thereby spraying the organic liquid fertilizer outward in a rotating manner; a pitch adjustment mechanism is also provided on the fertilizer conveying pipeline, which enables the nozzle to tilt upward or downward, thereby spraying the organic liquid fertilizer outward at an elevation angle or a depression angle.

[0053] (II) This invention discloses a liquid fertilizer spraying device suitable for fertilizer tankers, comprising a rotating mechanism disposed on the fertilizer delivery pipeline of the liquid fertilizer spraying device, including a cylinder, a fixed flange, a rotating flange, and a transmission mechanism. The fixed flange and the rotating flange are respectively fixedly and movably sleeved on the lower and upper outer sides of the cylinder. The transmission mechanism includes a motor, the transmission shaft of which is fixedly connected to the rotating flange. The fertilizer delivery pipeline includes a fertilizer tanker connecting pipe section and a bend section. The fertilizer tanker connecting pipe section is connected via the fixed flange, and the bend section is connected via the rotating flange. The fertilizer tanker connecting pipe section and the bend section are connected through the cylinder of the rotating mechanism. When the motor is started, the power of the motor is transmitted to the rotating flange, and the rotating flange rotates relative to the fixed flange, thereby adjusting the spraying direction of the liquid fertilizer spraying device, which can significantly improve the fertilization area and fertilization flexibility of organic liquid fertilizer.

[0054] (III) This invention discloses a liquid fertilizer spraying device suitable for fertilizer tank trucks, including a pitch adjustment mechanism. The pitch adjustment mechanism is installed on the liquid fertilizer spraying device, which includes a pitch adjustment pipe section. The pitch adjustment pipe section includes a left push rod support pipe and a right push rod support pipe. A nozzle is provided at the front end of the liquid fertilizer spraying device. The pitch adjustment mechanism is installed on the pitch adjustment pipe section and includes a corrugated pipe. The left push rod support pipe and the right push rod support pipe are connected through the corrugated pipe. An upper push rod is arranged above the corrugated pipe. The upper push rod is a telescopic rod that can extend forward or retract backward. The upper push rod is equipped with a stepper motor. When the output shaft of the stepper motor moves forward, the upper push rod extends forward, causing the nozzle to tilt forward, so as to spray the organic liquid fertilizer outward at a pitch angle. When the output shaft of the stepper motor moves backward, the upper push rod retracts backward, causing the nozzle to tilt backward, so as to spray the organic liquid fertilizer outward at an elevation angle.

[0055] (iv) This invention discloses a liquid fertilizer spraying device suitable for fertilizer tankers, including a nozzle. The nozzle includes a distribution head, a distribution head adjustment plate, and a frustum nozzle pipe. When the front end of the distribution head and the rear end of the frustum nozzle pipe are rotatably disposed at both ends of the distribution head adjustment plate, by rotating the distribution head adjustment plate, multiple solid and hollow parts of the distribution head adjustment plate can be aligned with or offset from multiple fertilizer outlet areas and multiple non-fertilizer outlet areas on the wall of the hemispherical groove of the distribution head. When multiple hollow parts of the distribution head adjustment plate are aligned with multiple fertilizer outlet areas on the wall of the hemispherical groove of the distribution head, the nozzle is fully conductive; when multiple hollow parts of the distribution head adjustment plate are offset from multiple fertilizer outlet areas on the wall of the hemispherical groove of the distribution head, the nozzle is not fully conductive, thereby realizing the adjustment of the liquid fertilizer spraying flow rate.

[0056] (V) This invention discloses a liquid fertilizer spraying device suitable for fertilizer tankers. Addressing the challenge of applying organic liquid fertilizer to mountainous and hilly farmland where it is difficult to do so normally, this device can be transported to mountainous and hilly areas simply by being installed on a tanker truck. It allows for adjustment of the fertilizer coverage area, spraying distance, and fertilizer type, and improves fertilization efficiency and uniformity through planar rotation and elevation angle adjustments. This invention discloses a liquid fertilizer spraying device suitable for fertilizer tankers, enabling effective application of organic liquid fertilizer to farmland, preventing land desertification, improving soil structure, increasing soil fertility and crop yield, and achieving sustainable organic farming. Attached Figure Description

[0057] Figure 1 This is a rear view of the rear end of the fertilizer tanker provided in Embodiment 1 of the present invention;

[0058] Figure 2 Is Figure 1 A schematic diagram showing the back of a fertilizer tanker truck after a liquid fertilizer spraying device has been installed.

[0059] Figure 3 This is a front view of the liquid fertilizer spraying device provided in Embodiment 2 of the present invention, which is equipped with a nozzle;

[0060] Figure 4 yes Figure 3 Top view;

[0061] Figure 5 This is a three-dimensional view of the rotating mechanism provided in Embodiment 3 of the present invention;

[0062] Figure 6 This is a top view of the rotating mechanism provided in Embodiment 3 of the present invention;

[0063] Figure 7 yes Figure 6 Sectional view along the middle AA direction;

[0064] Figure 8 This is a side view of the rotating mechanism provided in Embodiment 3 of the present invention;

[0065] Figure 9 yes Figure 8 Sectional view along the BB direction.

[0066] Figure 10 This is a top view of the pitch adjustment mechanism provided in Embodiment 4 of the present invention when it is in normal condition;

[0067] Figure 11 yes Figure 5 Front view;

[0068] Figure 12 yes Figure 5 The right view;

[0069] Figure 13This is a front view of the pitch adjustment mechanism provided in Embodiment 4 of the present invention when it is in a downward tilting state;

[0070] Figure 14 yes Figure 13 The right view.

[0071] Figure 15 This is a side view of the nozzle provided in Embodiment 5 of the present invention;

[0072] Figure 16 yes Figure 15 A front view of the distribution head in the middle;

[0073] Figure 17 yes Figure 15 Front view of the distribution head adjustment disc.

[0074] Figure 18 This is a side view of the nozzle with a spiral nozzle provided in Embodiment 6 of the present invention;

[0075] Figure 19 yes Figure 18 Right view of a nozzle with a spiral nozzle;

[0076] Figure 20 yes Figure 18 A sectional view along the longitudinal direction;

[0077] Figure 21 yes Figure 18 Perspective view along the longitudinal direction.

[0078] Figure 22 This is a schematic diagram of a liquid fertilizer spraying device with a spiral nozzle provided in Embodiment 6 of the present invention;

[0079] Figure 23 yes Figure 22 A schematic diagram of the structure of the liquid fertilizer spraying device when the spiral nozzle is tilted downwards to a tilt angle of 30 degrees.

[0080] Explanation of reference numerals in the attached drawings: 100-fertilizer tanker truck, 101-fertilizer storage tank, 102-discharge pipe, 103-fertilizer injection interface, 104-injection switch valve, 105-left vent valve, 106-right vent valve;

[0081] 1-Fertilizer transport pipeline, 10-Fertilizer tanker docking interface, 11-Fertilizer tanker docking pipe section, 12-Bend section, 13-Pitch adjustment pipe section, 131-Left push rod support pipe, 1310-Left flange, 132-Right push rod support pipe; 1320-Right flange;

[0082] 2-Sprinkler head, 20-Sprinkler head connecting pipe, 21-Distributor head, 210-First fertilizer outlet main hole, 211-Fertilizer outlet small hole; 22-Distributor head adjusting plate, 220-Second fertilizer outlet main hole; 23-Frustum nozzle pipe, 24-Internal threaded sleeve, 25-Spiral nozzle;

[0083] 3-Rotating mechanism; 30-Cylinder body; 31-Fixed flange; 310-Fixed plate; 32-Rotating flange; 320-Inner flange; 321-Flange part; 322-Vertical cylinder part; 33-Protective cover; 34-Transmission mechanism; 340-Worm gear transmission box; 3400-Transmission box connecting bolt; 341-Motor; 3410-Motor connecting bolt; 343-Worm; 343-Worm wheel; 3430-Bolt hole; 35-Ball; 350-Ball insertion hole; 351-Ball bushing; 352-Bulb set screw; 36-Lubricating nozzle; 37-Bearing; 371-Circular sealing ring; 372-Sealing gasket; 373-Star-shaped section sealing ring; 374-Lip seal; 381-First inner sealing ring; 382-Second inner sealing ring; 391-First outer sealing ring; 392-Second outer sealing ring.

[0084] 4-Pitch adjustment mechanism; 40-Bellwall; 400-Clamp; 401-Clamp set screw; 41-Upper push rod; 410-Stepper motor; 411-Left ear plate; 412-Right ear plate; 413-Push rod fixing bolt; 42-Left rotating arm; 43-Right rotating arm; 50-Pivot; 51-Left rod; 52-Right rod; 53-Bending plate; 530-Rotating arm set screw.

[0085] In this context, the "-" indicates "as". Detailed Implementation

[0086] Exemplary embodiments of the invention will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the invention and to fully convey the scope of the invention to those skilled in the art.

[0087] It should be noted that in this invention, "front end" refers to the end pointing to the nozzle 2 or the end where the nozzle 2 is located in the fertilizer delivery pipeline 1, and "rear end" refers to the end pointing to the fertilizer tanker interface 10 or the end where the fertilizer tanker interface 10 is located in the fertilizer delivery pipeline 1. Similarly, "front" refers to the direction pointing to the nozzle 2, and "rear" refers to the direction pointing to the fertilizer tanker interface 10.

[0088] To address the current lack of equipment for transporting organic liquid fertilizer to designated land without manual handling, this invention discloses a liquid fertilizer spraying device suitable for fertilizer tankers. Installed on a fertilizer tanker, the device includes a fertilizer delivery pipe with a tanker docking interface at its rear end and a nozzle at its front end. The fertilizer tanker stores organic liquid fertilizer. The tanker docking interface connects to and receives the organic liquid fertilizer from the tanker. The nozzle sprays the organic liquid fertilizer from the delivery pipe outwards. A rotating mechanism is installed on the delivery pipe, enabling the nozzle to rotate relative to the rear end of the pipe, thus spraying the organic liquid fertilizer outwards in a rotating manner. A pitch adjustment mechanism is also installed on the delivery pipe, allowing the nozzle to tilt upwards or downwards, thus spraying the organic liquid fertilizer outwards at either an elevation or depression angle.

[0089] Example 1: A fertilizer tanker

[0090] Embodiment 1 of the present invention provides a fertilizer tanker truck, the structure of which will be described in detail below with reference to the accompanying drawings.

[0091] refer to Figure 1 and Figure 2 The fertilizer tanker truck 100 is a liquid fertilizer transport tanker truck, which is equipped with a fertilizer storage tank 101, which stores organic liquid fertilizer. A discharge pipe 102 is provided on the tank wall of the fertilizer storage tank 101. The inlet end of the discharge pipe 102 is connected to the discharge port of the fertilizer storage tank 101, and the outlet end of the discharge pipe 102 is located at the rear end of the fertilizer tanker truck 100.

[0092] The organic liquid fertilizer in the fertilizer storage tank 101 can be transported from the discharge port of the fertilizer storage tank 101 to the inlet of the discharge pipe 102, and then to the outlet of the discharge pipe 102.

[0093] In order to spray the organic liquid fertilizer in the fertilizer tanker 100, the discharge end of the discharge pipe 102 is provided with a fertilizer spraying interface 103 for connecting with the liquid fertilizer spraying device.

[0094] As is common knowledge in the field, in order to control the output of organic liquid fertilizer from the fertilizer injection interface 103, an injection switch valve 104 is provided on the pipeline where the fertilizer injection interface 103 is located.

[0095] To facilitate the emptying of the organic liquid fertilizer in the discharge pipe 102, the discharge end of the discharge pipe 102 also includes a left vent valve 105 and a right vent valve 106. The left vent valve 105 and the right vent valve 106 are located on the left and right sides of the lower part of the tail end of the fertilizer tanker 100, respectively. The fertilizer injection interface 103 is located at the upper part of the tail end of the fertilizer tanker 100. The fertilizer injection interface 103, the left vent valve 105 and the right vent valve 106 are respectively connected to the discharge end of the discharge pipe 102.

[0096] The connection relationship between the fertilizer injection interface 103, the left vent valve 105, and the right vent valve 106 at the tail end of the fertilizer tanker 100 and the discharge end of the discharge pipe 102 is as follows: Figure 2 As shown.

[0097] Specifically, the fertilizer storage tank 101 and its discharge pipe 102 of the fertilizer tanker truck 100 have good sealing and stability. The fertilizer tanker truck 100 is professionally designed to adapt to different road conditions and transportation distances, and can efficiently and safely transport organic liquid fertilizer to mountainous and hilly areas with complex terrain. During the transportation of organic liquid fertilizer, it ensures that the organic liquid fertilizer will not leak or deteriorate.

[0098] Example 2: A liquid fertilizer spraying device suitable for fertilizer tank trucks

[0099] Embodiment 2 of the present invention provides a liquid fertilizer spraying device suitable for fertilizer tankers, which is installed on the fertilizer tanker of Embodiment 1. Its structure will be described in detail below with reference to the accompanying drawings.

[0100] refer to Figures 3 to 4 The liquid fertilizer spraying device includes a fertilizer delivery pipe 1, a nozzle 2, a rotating mechanism 3, and a pitch adjustment mechanism 4.

[0101] The rear end of the fertilizer transport pipeline 1 serves as the input end, and the front end of the fertilizer transport pipeline 1 serves as the output end. The rear end of the fertilizer transport pipeline 1 is provided with a fertilizer tanker interface 10, and the front end is provided with a nozzle 2.

[0102] The fertilizer tanker docking interface 10 is used to connect with the fertilizer tanker 100 and receive the organic liquid fertilizer inside the fertilizer tanker 100, and the nozzle 2 is used to spray the organic liquid fertilizer in the fertilizer delivery pipeline 1 outward.

[0103] The fertilizer delivery pipeline 1 is equipped with a rotating mechanism 3, which enables the nozzle 2 to rotate relative to the rear end of the fertilizer delivery pipeline 1, thereby spraying organic liquid fertilizer outward in a rotating manner.

[0104] The fertilizer delivery pipeline 1 is also equipped with a pitch adjustment mechanism 4, which enables the nozzle 2 to tilt upward or downward, thereby spraying organic liquid fertilizer outward at an angle of elevation or depression.

[0105] As one specific implementation method, refer to Figure 3 The fertilizer transport pipeline 1 includes a fertilizer tanker docking section 11, a bend section 12, and an elevation adjustment section 13.

[0106] The fertilizer tanker truck connecting pipe section 11 is connected to the rear end of the bent pipe section 12 through the rotating mechanism 3. The front end of the bent pipe section 12 and the nozzle 2 are respectively connected to the two ends of the pitch adjustment pipe section 13, thereby forming a continuous fertilizer transport pipeline 1.

[0107] More specifically, the bottom and top surfaces of the rotating mechanism 3 are respectively provided with a fixed flange 31 and a rotating flange 32.

[0108] The rear end of the fertilizer tanker docking pipe section 11 is provided with a fertilizer tanker docking interface 10 for docking with the fertilizer tanker 100, and the front end is fixedly connected to the fixed flange 31 of the rotating mechanism 3.

[0109] The pitch adjustment pipe section 13 is provided with a left flange 1310 and a right flange 1320 at both ends, respectively.

[0110] The rear end of the bent pipe section 12 is fixed on the rotating flange 32 of the rotating mechanism 3, and the front end is connected to the left flange 1310 of the pitch adjustment pipe section 13 via a flange.

[0111] The nozzle 2 is equipped with a nozzle connecting pipe 20, and a flange is provided at the rear end of the nozzle connecting pipe 20. The flange at the rear end of the nozzle connecting pipe 20 of the nozzle 2 is connected to the right flange 1320 of the pitch adjustment pipe section 13 through the flange.

[0112] Specifically, the pitch adjustment mechanism 4 is mounted on the pitch adjustment pipe section 13.

[0113] Example 3: A rotating mechanism suitable for liquid fertilizer spraying devices

[0114] Embodiment 3 of the present invention provides a rotating mechanism suitable for a liquid fertilizer spraying device, which is installed on the fertilizer delivery pipe 1 of the liquid fertilizer spraying device in Embodiment 2. The structure of the rotating mechanism 3 and its connection relationship are described in detail below with reference to the accompanying drawings.

[0115] refer to Figures 5 to 9 The rotating mechanism 3 includes a cylinder 30, a fixed flange 31, a rotating flange 32, and a set of transmission mechanisms 34.

[0116] The fixed flange 31 and the rotating flange 32 are respectively fixedly and movably sleeved on the lower and upper outer sides of the cylinder 30;

[0117] The transmission mechanism 34 includes a motor 341, and the transmission shaft of the motor 341 is fixedly connected to the rotating flange 32.

[0118] The fertilizer pipeline 1 includes a fertilizer tanker docking section 11 and a bend section 12. The fertilizer tanker docking section 11 is connected by a fixed flange 31, and the bend section 12 is connected by a rotating flange 32. The fertilizer tanker docking section 11 and the bend section 12 are connected by the cylinder 30 of the rotating mechanism 3.

[0119] When the motor 341 is started, the power of the motor 341 is transmitted to the rotating flange 32, and the rotating flange 32 rotates relative to the fixed flange 31, thereby adjusting the spray direction of the liquid fertilizer spraying device.

[0120] As a specific implementation of the transmission mechanism, the transmission mechanism 34 further includes a worm gear 342 and a worm wheel 343.

[0121] The drive shaft of motor 341 is connected to worm gear 342;

[0122] The worm 342 and the worm wheel 343 are meshed by gears;

[0123] The rotating flange 32 and the worm gear 343 are fixedly connected by bolts.

[0124] When the motor 341 is started, the motor 341 drives the worm gear 342 to drive the rotating flange 32 to move through the worm wheel 343, causing the rotating flange 32 to rotate relative to the fixed flange 31.

[0125] Specifically, the rotary flange 32 includes a flange portion 321 and a vertical cylindrical portion 322, wherein the end of the flange portion 321 is perpendicularly connected to the vertical cylindrical portion 322 and integrally formed.

[0126] The rotating flange 32 is movably sleeved on the outer side of the upper part of the cylinder 30 via the vertical cylinder part 322;

[0127] The flange portion 321 of the rotary flange 32 is located above the worm gear 343, and the worm gear 343 is fixedly connected to the flange portion 321 of the rotary flange 32 by bolts. Specifically, the worm gear 343 is provided with bolt holes 3430 for connecting the rotary flange and the worm gear, such as... Figure 9 As shown, the bolt passes through the bolt hole 3430 to achieve the bolted connection between the two.

[0128] To ensure that the rotating flange 32 rotates relative to the fixed flange 31, preferably, the bottom end of the rotating flange 32 is spaced apart from the top end of the fixed flange 31, specifically, the bottom end of the rotating flange 32 is 2mm away from the top end of the fixed flange 31.

[0129] Preferably, the fixed flange 31 is integrally formed with the cylinder 30.

[0130] To prevent contamination from dust and other debris, preferably, a protective cover 33 is provided between the outer side of the fixed flange 31 and the outer side of the rotating flange 32, and the fixed flange 31, the worm gear 343 and the rotating flange 32 are arranged sequentially from bottom to top inside the protective cover 33.

[0131] To ensure relative sliding between the rotating flange 32 and the cylinder 30, two rings of ball bearings 35 are provided between the outer wall of the cylinder 30 and the inner wall of the vertical cylinder portion 322 of the rotating flange 32.

[0132] Each ball bearing 35 is equipped with a ball groove, and each ball groove is equipped with a ball insertion hole 350;

[0133] After all the balls 35 enter the ball groove through the ball inlet hole 350, a ball bushing 351 is provided in each ball inlet hole 350, and each ball bushing 351 is fixed by a bushing set screw 352.

[0134] The worm gear 342 is externally equipped with a worm gear transmission box 340.

[0135] To avoid friction between the rotating flange 32 and the cylinder 30, a lubricating oil hole is provided on the inner wall of the vertical cylinder portion 322 of the rotating flange 32. The lubricating oil hole is connected to the gap between the vertical cylinder portion 322 of the rotating flange 32 and the cylinder 30. A lubricating oil nozzle 36 is provided in the lubricating oil hole, and the lubricating oil nozzle 36 faces the worm gear transmission box 340.

[0136] After the worm gear transmission box 340 is removed, the lubricating oil nozzle 36 is exposed. Lubricating oil is injected into the gap between the vertical cylindrical part 322 and the cylindrical body 30 of the rotating flange 32 through the lubricating oil nozzle 36.

[0137] To ensure the transmission efficiency of the worm gear 342 and the worm wheel 343, and also to help solve the relative sliding problem between the rotating flange 32 and the cylinder 30, lubricating oil is provided on the contact surface of the worm gear 342 and the worm wheel 343.

[0138] To prevent the lubricating oil on the contact surface between the worm 342 and the worm wheel 343 from flowing out uncontrollably, specifically, a worm gear transmission box 340 is configured outside the worm 342. The worm gear transmission box 340 includes an upper housing and a lower housing, which are connected by transmission box connecting bolts 3400.

[0139] Furthermore, the housing of the motor 341 is fixed to the worm gear transmission box 340 by motor connecting bolts 3410.

[0140] Furthermore, the worm gear transmission box 340 and the fixed flange 31 are fixedly connected by a fixing plate 310.

[0141] To prevent relative movement between the worm gear 342 and the worm gear transmission box 340, bearings 37 are respectively provided at both ends of the worm gear 342 and the worm gear transmission box 340.

[0142] Specifically, bearing 37 is a single-row cylindrical roller bearing, with its inner ring surface fixedly fitted onto the worm gear 342, and its outer ring surface fixedly connected to the inner wall of the worm gear transmission box 340.

[0143] In order to seal the lubricating oil on the contact surface between the worm gear 342 and the worm wheel 343, the rotating mechanism 3 is also equipped with a lubricating oil sealing assembly. The lubricating oil sealing assembly includes a circular sealing ring 371, a sealing gasket 372, and a star-shaped cross-section sealing ring 373. The circular sealing ring 371 and the star-shaped cross-section sealing ring 373 are arranged between the side wall of the bearing 37 and the worm gear transmission box 340, and the circular sealing ring 371 and the star-shaped cross-section sealing ring 373 are separated by the sealing gasket 372.

[0144] To further seal the lubricating oil on the contact surface between the worm gear 342 and the worm wheel 343, a lip seal ring 374 is provided at both ends of the gap between the vertical cylindrical part 322 and the cylindrical part 30 of the rotary flange 32.

[0145] Specifically, the motor 341 is a cycloidal hydraulic motor.

[0146] In this embodiment, the worm gear transmission box 24 is designed according to the meshing dimensions of the worm 342 and the worm wheel 343. The relative sliding between the rotating flange 32 and the cylinder 30 and the relative movement between the worm 342 and the worm gear transmission box 340 are ensured by two rings of balls 35 and bearings 37, respectively. Lubricating oil is added through the lubrication nozzle 36 to ensure good inertia and improve the rotation performance of the injection device.

[0147] To prevent liquid fertilizer from entering the cylinder 30 through the rotating flange 32 and leaking out during its flow within the cylinder 30, the rotating mechanism 3 is also equipped with a liquid fertilizer sealing device.

[0148] The liquid fertilizer sealing device includes an inner liquid fertilizer sealing assembly and an outer liquid fertilizer sealing assembly.

[0149] The internal liquid fertilizer sealing assembly includes a first inner sealing ring 381 and a second inner sealing ring 382.

[0150] The port of the flange portion 321 of the rotary flange 32 extends toward the center of the cylinder 30 to form an inner flange 320. A sealing ring groove is provided on the upper end face of the cylinder 30. The inner flange of the outer port of the rotary flange 32 and the sealing ring groove of the upper port of the cylinder 30 form a notched closed annular groove. A first inner sealing ring 381 and a second inner sealing ring 382 are provided in the closed annular groove. The second inner sealing ring 382 includes a horizontal part and a vertical part. The end of the horizontal part and the end of the vertical part are vertically fixedly connected.

[0151] The vertical portion of the second inner sealing ring 382 is close to the first inner sealing ring 381, and the horizontal portion of the second inner sealing ring 382 is located at the notch of the sealed annular groove.

[0152] The external liquid fertilizer sealing assembly includes a first external sealing ring 391 and a second external sealing ring 392.

[0153] Flanges are welded to both ends of the bend section 12, and the flange at the bottom of the bend section 12 is mated with the flange portion 321 of the rotary flange 32.

[0154] In order to seal the joint between the rotary flange 32 and the flange at the bottom of the bend section 12, an outer sealing ring groove is provided on the outer wall of the flange portion 321 of the rotary flange 32. A first outer sealing ring 391 and a second outer sealing ring 392 are provided in the outer sealing ring groove. The second outer sealing ring 392 includes a horizontal part and a vertical part, and the ends of the horizontal part and the vertical part are vertically fixedly connected.

[0155] The vertical portion of the second outer sealing ring 392 is close to the first outer sealing ring 391, and the horizontal portion of the second outer sealing ring 392 is disposed on the outer wall of the flange portion 321 of the rotary flange 32, for sealing the connection between the flange portion 321 of the rotary flange 32 and the flange at the bottom end of the bend section 12.

[0156] In this embodiment, the inner liquid fertilizer sealing assembly and the outer liquid fertilizer sealing assembly form a multi-seal system for the liquid fertilizer sealing device, ensuring the sealing between the rotating flange 32 and the cylinder 30.

[0157] Example 4: A pitch adjustment mechanism suitable for liquid fertilizer spraying devices

[0158] Embodiment 4 of the present invention provides a pitch adjustment mechanism suitable for a liquid fertilizer spraying device, which is installed on the pitch adjustment pipe section 13 of the liquid fertilizer spraying device in Embodiment 2. Its structure will be described in detail below with reference to the accompanying drawings.

[0159] refer to Figures 10 to 12 The pitch adjustment mechanism 4 includes a bellows 40, and the pitch adjustment pipe section 13 includes a left push rod support pipe 131 and a right push rod support pipe 132, and the left push rod support pipe 131 and the right push rod support pipe 132 are connected through the bellows 40.

[0160] An upper push rod 41 is disposed above the bellows 40.

[0161] The upper push rod 41 is a telescopic rod that can extend forward or retract backward. The upper push rod 41 is equipped with a stepper motor 410. When the output axis of the stepper motor 410 moves forward, the upper push rod 41 extends forward, causing the nozzle 2 to tilt forward so as to spray the organic liquid fertilizer outward at a downward angle. When the output axis of the stepper motor 410 moves backward, the upper push rod 41 retracts backward, causing the nozzle 2 to tilt backward so as to spray the organic liquid fertilizer outward at an upward angle.

[0162] The left push rod support tube 131 and the right push rod support tube 132 are connected by a corrugated pipe 40 to form the pitch adjustment tube section 13.

[0163] As a specific embodiment for connecting the left push rod support tube 131 and the right push rod support tube 132 through the corrugated pipe 40, the right end of the left push rod support tube 131 and the left end of the right push rod support tube 132 are respectively connected to the two ends of the corrugated pipe 40.

[0164] More specifically, the two ends of the corrugated pipe 40 are respectively equipped with clamps 400.

[0165] The right end of the left push rod support tube 131 is connected to the left end of the corrugated pipe 40 by a clamp 400 and is tightened and fixed by a clamp set screw 401.

[0166] The left end of the right push rod support tube 132 is connected to the right end of the bellows 40 by a clamp 400 and is tightened and fixed by a clamp set screw 401.

[0167] To avoid interference between the upper push rod 41 and the bellows 40 during operation, a specific implementation method for setting the upper push rod 41 above the bellows 40 is as follows: the right end of the left push rod support tube 131 and the left end of the right push rod support tube 132 are respectively provided with a left ear plate 411 and a right ear plate 412, and the two ends of the upper push rod 41 are respectively fixed on the left ear plate 411 and the right ear plate 412.

[0168] More specifically, the outer ends of the left ear plate 411 and the right ear plate 412 are respectively provided with ear holes, and the two ends of the upper push rod 41 are respectively fixed to the ear holes of the left ear plate 411 and the right ear plate 412 by push rod fixing bolts 413.

[0169] In order to facilitate the bending of the front end of the bellows 40 relative to the rear end to produce an upward or downward tilt, preferably, the distance between the ear hole at the outer end of the left ear plate 411 and the left push rod support tube 131 is greater than the distance between the ear hole at the outer end of the right ear plate 412 and the right push rod support tube 132.

[0170] To improve the stability of the pitch adjustment mechanism 4 during the process of the upper push rod 41 causing the nozzle 2 to tilt down or up, a left-hand rotating arm 42 and a right-hand rotating arm 43 are respectively arranged on the left and right sides of the bellows 40.

[0171] The left rotating arm 42 and the right rotating arm 43 each include a left member 51 and a right member 52, and the left member 51 and the right member 52 are pivotally connected by a pivot 50.

[0172] Once the front end of the bellows 40 bends relative to the rear end, the left rod 51 and right rod 52 of the left rotating arm 42 and the right rotating arm 43 simultaneously bend toward the pivot 50, guarding the left and right sides of the bellows 40 to prevent the bellows 40 from shifting to the left or right.

[0173] As a specific implementation method for pivoting the left rod 51 and the right rod 52 via the pivot 50, the right end of the left rod 51 and the left end of the right rod 52 are respectively provided with pivot holes. After the pivot holes of the left rod 51 and the right rod 52 are aligned, a bolt is inserted as the pivot 50, thereby realizing the pivot connection of the two rods.

[0174] Furthermore, both ends of the left rod 51 are bent inward at 90 degrees to form bending plates 53. The clamp 400 at the end of the corrugated pipe 40 is provided with a flange. The bending plates 53 at both ends of the left rod 51 and the flange of the clamp 400 at the end of the corrugated pipe 40 are respectively connected by a swivel set screw 530.

[0175] Specifically, the bending plate 53 is provided with screw holes, and the flange of the clamp 400 at the end of the bellows 40 is provided with screw holes. When the screw holes of the bending plates 53 at both ends of the left rod 51 coincide with the screw holes of the flange of the clamp 400 at the end of the bellows 40, the rotating arm set screw 530 is inserted. Since screw connections are common knowledge in this technical field, they will not be described in detail here.

[0176] Similarly, both ends of the right rod 52 are bent inward at 90 degrees to form bending plates 53. The clamp 400 at the end of the corrugated pipe 40 is provided with a flange. The bending plates 53 at both ends of the right rod 52 and the flange of the clamp 400 at the end of the corrugated pipe 40 are respectively connected by a swivel set screw 530.

[0177] Preferably, the range of bending of the front end of the bellows 40 relative to the rear end is [-30º, 30º].

[0178] Specifically, when the front end of the bellows 40 effectively bends relative to its rear end within the range of 0~30º, the elevation angle of the nozzle 2 is changed; when the front end of the bellows 40 effectively bends relative to its rear end within the range of -30º~0, the depression angle of the nozzle 2 is changed. Figure 13 and Figure 14 As shown, this allows for adjustment of the coverage area of ​​the organic liquid fertilizer spray.

[0179] Example 5: A nozzle suitable for liquid fertilizer spraying devices

[0180] Embodiment 5 of the present invention provides a nozzle suitable for a liquid fertilizer spraying device, which is set at the front end of the liquid fertilizer spraying device of Embodiment 2. Its structure will be described in detail below with reference to the accompanying drawings.

[0181] refer to Figures 15 to 17 The nozzle 2 includes a distribution head 21, a distribution head adjusting disc 22, and a frustum-shaped nozzle pipe 23.

[0182] The dispensing head 21 has a hemispherical groove inside, such as Figure 20 and Figure 21 As shown,

[0183] The hemispherical trough has multiple fertilizer-discharging zones and multiple non-fertilizer-discharging zones on its walls, such as... Figure 16 As shown, the fertilizer outlet area is densely covered with several small fertilizer outlet holes 211;

[0184] The distributor head adjustment disc 22 is a circular disc, and the distributor head adjustment disc 22 is provided with multiple solid parts and empty parts, such as Figure 17 As shown, the solid and empty parts are spaced apart, and multiple solid and empty parts correspond to multiple fertilizer dispensing and non-fertilizer dispensing areas of the dispensing head 21, respectively.

[0185] The frustum nozzle 23 is larger at the left end and smaller at the right end, forming a frustum shape;

[0186] The front end of the distribution head 21 and the rear end of the frustum-shaped nozzle pipe 23 are rotatably mounted at both ends of the distribution head adjusting plate 22, exposing the front end of the frustum-shaped nozzle pipe 23 as a nozzle. This ensures that by rotating the distribution head adjusting plate 22, multiple solid and hollow parts of the distribution head adjusting plate 22 can be aligned with or offset from multiple fertilizer outlet areas and multiple non-fertilizer outlet areas on the wall of the hemispherical groove of the distribution head 21. When multiple hollow parts of the distribution head adjusting plate 22 are aligned with multiple fertilizer outlet areas on the wall of the hemispherical groove of the distribution head 21, the nozzle 2 is fully conductive; when multiple hollow parts of the distribution head adjusting plate 22 are offset from multiple fertilizer outlet areas on the wall of the hemispherical groove of the distribution head 21, the nozzle 2 is not fully conductive, thereby achieving adjustment of the liquid fertilizer spray flow rate.

[0187] Specifically, the organic liquid fertilizer spraying mode can be adjusted by rotating the distribution head adjustment disc 22. The specific method is as follows: by rotating the distribution head adjustment disc 22, the solid part and the hollow part of the distribution head adjustment disc 22 are aligned with or offset from the fertilizer outlet area and the non-fertilizer outlet area of ​​the distribution head 21, respectively, thereby adjusting the flow rate of the organic liquid fertilizer spray. The adjustment disc can even adjust the shape of the liquid fertilizer spray.

[0188] As a specific connection method, the front end of the distribution head 21 is connected to the rear end of the distribution head adjusting plate 22 by a thread, and the front end of the distribution head adjusting plate 22 is connected to the rear end of the frustum nozzle pipe 23 by a thread, thereby realizing that the front end of the distribution head 21 and the rear end of the frustum nozzle pipe 23 can be rotatably set at both ends of the distribution head adjusting plate 22.

[0189] In order to improve the spraying efficiency of the nozzle 2, a first fertilizer outlet main hole 210 is provided in the center of the wall of the hemispherical groove of the distribution head 21, and a second fertilizer outlet main hole 220 is provided in the center of the distribution head adjusting plate 22.

[0190] When the front end of the distributor head 21 is threadedly connected to the rear end of the distributor head adjusting plate 22, the first main outlet hole 210 of the distributor head 21 and the second main outlet hole 220 of the distributor head adjusting plate 22 are aligned and connected. Figure 20 and Figure 21 As shown.

[0191] Preferably, the hemispherical groove outside the first fertilizer main outlet 210 has multiple fertilizer outlet areas and multiple non-fertilizer outlet areas on its groove wall. Each fertilizer outlet area has a densely distributed number of small fertilizer outlet holes 211. The multiple fertilizer outlet areas and multiple non-fertilizer outlet areas surround the first fertilizer main outlet 210 as the center, and the fertilizer outlet areas and the non-fertilizer outlet areas are spaced apart from each other. Figure 16 As shown.

[0192] Specifically, the nozzle 2 is equipped with a nozzle connecting pipe 20, and the nozzle 2 is set at the front end of the liquid fertilizer spraying device through the nozzle connecting pipe 20.

[0193] The nozzle connecting pipe 20 is threaded to the nozzle 2, and a flange is provided at the rear end of the nozzle connecting pipe 20. The flange at the rear end of the nozzle connecting pipe 20 is connected to the right flange 1320 of the pitch adjustment pipe section 13 via a flange.

[0194] Specifically, the outer wall of the front end of the nozzle connecting pipe 20 is provided with an external thread, and the inner wall of the rear end of the distributing head 21 is provided with an internal thread. The rear end of the distributing head 21 is connected to the front end of the nozzle connecting pipe 20 by a thread.

[0195] Example 6: A nozzle with a spiral nozzle

[0196] Based on the nozzle suitable for liquid fertilizer spraying device provided in Example 5, Example 6 of the present invention improves the nozzle of Example 5 in the following ways:

[0197] In order to atomize liquid fertilizer and thus reduce environmental pollution, a spiral nozzle 25 was installed on the nozzle of the nozzle in Example 3, resulting in a nozzle with a spiral nozzle 25.

[0198] Specifically, refer to Figures 18 to 23 The spiral nozzle 25 is equipped with an inner threaded sleeve 24, and the spiral nozzle 25 is fitted onto the front end nozzle of the frustum nozzle tube 23 of the nozzle in Embodiment 3 through the inner threaded sleeve 24.

[0199] The spiral nozzle 21 has a shape that gradually decreases in size from its rear end to its front end, until it forms a pointed tip and is spiral in shape.

[0200] The spiral nozzle 21 is used to atomize liquid fertilizer.

[0201] Specifically, the outer wall of the front end of the frustum nozzle 23 is provided with an external thread, and the inner wall of the rear end of the internal threaded sleeve 24 is provided with an internal thread. The front end of the frustum nozzle 23 and the rear end of the internal threaded sleeve 24 are connected by threads. The outer wall of the rear end of the spiral nozzle 25 is provided with an external thread, and the front end of the internal threaded sleeve 24 is provided with an internal thread. The rear end of the spiral nozzle 25 and the front end of the internal threaded sleeve 24 are connected by threads.

[0202] When it is necessary to spray atomized liquid fertilizer, the spiral nozzle 25 is installed and fixed on the nozzle 2, making it a nozzle with the spiral nozzle 25. Thus, the liquid fertilizer spraying device becomes a liquid fertilizer spraying device with a nozzle 25. Figure 22 and Figure 23 As shown.

[0203] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention 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 of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A liquid fertilizer spraying device suitable for fertilizer tank trucks, characterized in that, It includes a fertilizer delivery pipeline (1), with a fertilizer tanker docking interface (10) at the rear end and a nozzle (2) at the front end; wherein, the fertilizer tanker (100) stores organic liquid fertilizer, the fertilizer tanker docking interface (10) is used to dock with the fertilizer tanker (100) and receive the organic liquid fertilizer in the fertilizer tanker (100), and the nozzle (2) is used to spray the organic liquid fertilizer in the fertilizer delivery pipeline (1) outward; The fertilizer delivery pipe (1) is equipped with a rotating mechanism (3) and a pitch adjustment mechanism (4). The rotating mechanism (3) enables the nozzle (2) to rotate relative to the rear end of the fertilizer delivery pipe (1), thereby spraying the organic liquid fertilizer outward in a rotating manner. The pitch adjustment mechanism (4) enables the nozzle (2) to tilt upward or downward, thereby spraying the organic liquid fertilizer outward at an elevation angle or a depression angle. The fertilizer delivery pipeline (1) includes a fertilizer tanker docking section (11), a bend section (12), and a pitch adjustment section (13). The fertilizer tanker docking section (11) is connected to the rear end of the bend section (12) through the rotating mechanism (3). The front end of the bend section (12) and the nozzle (2) are respectively connected to the two ends of the pitch adjustment section (13), thereby forming a continuous fertilizer delivery pipeline (1). The bottom and top ports of the rotating mechanism (3) are respectively equipped with a fixed flange (31) and a rotating flange (32). The rear end of the fertilizer tanker docking pipe section (11) is provided with a fertilizer tanker docking interface (10) for docking with the fertilizer tanker (100), and the front end is fixedly connected to the fixed flange (31) of the rotating mechanism (3). The two ends of the pitch adjustment pipe section (13) are respectively provided with a left flange (1310) and a right flange (1320). The rear end of the bend pipe section (12) is fixed. The front end of the rotating flange (32) of the rotating mechanism (3) is connected to the left flange (1310) of the pitch adjustment pipe section (13); the nozzle (2) is equipped with a nozzle connecting pipe (20), and the rear end of the nozzle connecting pipe (20) is equipped with a flange, and the flange at the rear end of the nozzle connecting pipe (20) of the nozzle (2) is connected to the right flange (1320) of the pitch adjustment pipe section (13); the pitch adjustment mechanism (4) is provided on the pitch adjustment pipe section (13); The pitch adjustment mechanism (4) is installed on the pitch adjustment pipe section (13) and includes a corrugated pipe (40). An upper push rod (41) is arranged above the corrugated pipe (40). The upper push rod (41) is a telescopic rod that can extend forward or retract backward. The upper push rod (41) is equipped with a stepper motor. When the output shaft of the stepper motor moves forward, the upper push rod (41) extends forward, causing the nozzle (2) to tilt forward so as to spray the organic liquid fertilizer outward at a downward angle. When the output shaft of the stepper motor moves backward, the upper push rod (41) retracts backward, causing the nozzle (2) to tilt backward so as to spray the organic liquid fertilizer outward at an upward angle. A left-handed arm (42) and a right-handed arm (43) are respectively arranged on the left and right sides of the bellows (40); each of the left-handed arm (42) and the right-handed arm (43) includes a left rod (51) and a right rod (52), and the left rod (51) and the right rod (52) are pivotally connected by a pivot (50); once the front end of the bellows (40) bends relative to the rear end, the left rod (51) and the right rod (52) of the left-handed arm (42) and the right rod (43) bend towards the pivot (50) at the same time, guarding the left and right sides of the bellows (40) to prevent the bellows (40) from shifting to the left or right; The nozzle (2) includes a distribution head (21), a distribution head adjustment disc (22), and a frustum nozzle pipe (23). The distribution head (21) has a hemispherical groove inside, and the groove wall of the hemispherical groove is provided with multiple fertilizer dispensing areas and multiple non-fertilizer dispensing areas. The fertilizer dispensing areas are densely covered with several fertilizer dispensing holes (211). The distribution head adjustment disc (22) is a circular disc, and the distribution head adjustment disc (22) is provided with multiple solid parts and empty parts, which are spaced apart. The multiple solid parts and empty parts correspond to the multiple fertilizer dispensing areas and non-fertilizer dispensing areas of the distribution head (21), respectively. The frustum nozzle pipe (23) is larger at the left end and smaller at the right end, and is frustum shaped. The front end of the distribution head (21) and the rear end of the frustum nozzle pipe (23) are rotatably set. At both ends of the distribution head adjusting plate (22), the front end of the frustum nozzle pipe (23) is exposed as a nozzle to ensure that by rotating the distribution head adjusting plate (22), the multiple solid and empty parts of the distribution head adjusting plate (22) are respectively aligned with or offset from the multiple fertilizer outlet areas and multiple non-fertilizer outlet areas on the groove wall of the hemispherical groove of the distribution head (21). When the multiple empty parts of the distribution head adjusting plate (22) are aligned with the multiple fertilizer outlet areas on the groove wall of the hemispherical groove of the distribution head (21), the nozzle (2) is fully connected; when the multiple empty parts of the distribution head adjusting plate (22) are offset from the multiple fertilizer outlet areas on the groove wall of the hemispherical groove of the distribution head (21), the nozzle (2) is not fully connected, thereby realizing the adjustment of the liquid fertilizer spray flow rate.

2. The liquid fertilizer spraying device according to claim 1, characterized in that, The rotating mechanism (3) includes a cylinder (30), a fixed flange (31), a rotating flange (32), and a transmission mechanism (34). The fixed flange (31) and the rotating flange (32) are respectively fixedly and movably sleeved on the lower and upper outer sides of the cylinder (30); The transmission mechanism (34) includes a motor (341), the transmission shaft of which is fixedly connected to the rotating flange (32); The fertilizer pipeline (1) includes a fertilizer tanker docking section (11) and a bend section (12). The fertilizer tanker docking section (11) is connected by a fixed flange (31), and the bend section (12) is connected by a rotating flange (32). The fertilizer tanker docking section (11) and the bend section (12) are connected by the cylinder (30) of the rotating mechanism (3). When the motor (341) is started, the power of the motor (341) is transmitted to the rotating flange (32), which rotates relative to the fixed flange (31), thereby adjusting the spraying direction of the liquid fertilizer spraying device.

3. The liquid fertilizer spraying device according to claim 2, characterized in that, The transmission mechanism (34) further includes a worm (342) and a worm wheel (343), the transmission shaft of the motor (341) is connected to the worm (342), and the worm (342) and the worm wheel (343) are meshed by gears; The rotating flange (32) includes a flange portion (321) and a vertical cylindrical portion (322), wherein the end of the flange portion (321) is perpendicularly connected to the vertical cylindrical portion (322) and integrally formed; The rotating flange (32) is movably sleeved on the outer side of the upper part of the cylinder (30) through the vertical cylinder part (322); The flange portion (321) of the rotary flange (32) is located above the worm gear (343), and the worm gear (343) and the flange portion (321) of the rotary flange (32) are fixedly connected by bolts.

4. The liquid fertilizer spraying device according to claim 3, characterized in that, The worm gear (342) is externally equipped with a worm gear transmission box (340). The vertical cylindrical part (322) of the rotary flange (32) is provided with a lubricating oil hole on its inner wall. The lubricating oil hole is connected to the gap between the vertical cylindrical part (322) of the rotary flange (32) and the cylindrical part (30). A lubricating oil nozzle (36) is provided in the lubricating oil hole, and the lubricating oil nozzle (36) faces the worm gear transmission box (340). The rotating mechanism (3) is also equipped with a lubricating oil sealing assembly. Bearings (37) are respectively provided at both ends between the worm (342) and the worm gear transmission box (340). The lubricating oil sealing assembly includes a circular sealing ring (371), a sealing gasket (372), and a star-shaped section sealing ring (373). The circular sealing ring (371) and the star-shaped section sealing ring (373) are disposed between the side wall of the bearing (37) and the worm gear transmission box (340), and the circular sealing ring (371) and the star-shaped section sealing ring (373) are separated by the sealing gasket (372). A lip seal (374) is provided at both ends of the gap between the vertical cylindrical part (322) of the rotary flange (32) and the cylindrical part (30).

5. The liquid fertilizer spraying device according to claim 4, characterized in that, The rotating mechanism (3) is also equipped with a liquid fertilizer sealing device. The liquid fertilizer sealing device includes an inner liquid fertilizer sealing assembly and an outer liquid fertilizer sealing assembly. The internal liquid fertilizer sealing assembly includes a first inner sealing ring (381) and a second inner sealing ring (382). The port of the flange portion (321) of the rotary flange (32) extends toward the center of the cylinder (30) to form an inner flange (320). A sealing ring groove is provided on the upper end face of the cylinder (30), and the inner flange of the outer port of the rotary flange (32) and the sealing ring groove of the upper port of the cylinder (30) form a notched closed annular groove. A first inner sealing ring (381) and a second inner sealing ring (382) are provided in the closed annular groove. The second inner sealing ring (382) includes a horizontal part and a vertical part, and the end of the horizontal part and the end of the vertical part are vertically fixedly connected. The vertical part of the second inner sealing ring (382) is close to the first inner sealing ring (381), and the horizontal part of the second inner sealing ring (382) is located at the notch of the sealed annular groove. The external liquid fertilizer sealing assembly includes a first external sealing ring (391) and a second external sealing ring (392). Flanges are welded to both ends of the bend (12), and the flange at the bottom of the bend (12) is connected to the flange portion (321) of the rotary flange (32). The outer wall of the flange portion (321) of the rotary flange (32) is provided with an outer sealing ring groove, and a first outer sealing ring (391) and a second outer sealing ring (392) are provided in the outer sealing ring groove. The second outer sealing ring (392) includes a horizontal portion and a vertical portion, and the ends of the horizontal portion and the vertical portion are vertically fixedly connected. The vertical part of the second outer sealing ring (392) is close to the first outer sealing ring (391), and the horizontal part of the second outer sealing ring (392) is disposed on the outer wall of the flange portion (321) of the rotary flange (32) to seal the connection between the flange portion (321) of the rotary flange (32) and the flange at the bottom end of the bend section (12).

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