Agricultural polluted cultivated land nano repair material spraying equipment

Abstract

The invention relates to the technical field of spraying equipment, and discloses agricultural polluted cultivated land nanometer repair material spraying equipment which comprises a base and a support, a spraying mechanism is arranged outside the support, a feeding mechanism is arranged at the top end of the base, a mixing cavity is formed in the rear end of the spraying mechanism, a corrugated pipe is fixedly connected to the rear end of the mixing cavity, and the corrugated pipe is fixedly connected to the rear end of the spraying mechanism. And a swing mechanism is arranged at the rear end of the corrugated pipe, a butt joint mechanism is arranged in the swing mechanism, the feeding mechanism comprises a storage tank, the bottom end of the storage tank is fixedly connected to the top end of the base, and a rotating column is rotationally connected into the storage tank. The rotating column can simultaneously drive the fixed box and the knocking block to rotate and intermittently strike the discharging port and the inclined plate, raw materials are made to vibrate, blocking is prevented, after striking, the sliding plate slides in the fixed box, the spring buffers and pushes the sliding plate to reset, continuous striking of the knocking block is guaranteed, and stable conveying of the raw materials is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of spraying equipment technology, specifically to spraying equipment for nano-remediation materials on contaminated agricultural land. Background Technology

[0002] In today's agricultural sector, soil pollution is becoming increasingly serious, especially heavy metal pollution, which poses a huge threat to food safety and human health, becoming a global environmental concern. Traditional soil remediation technologies, such as phytoremediation and microbial remediation, while having certain advantages, also have shortcomings such as long remediation time and limitations imposed by the type of pollutant. In recent years, nanotechnology, as one of the cutting-edge technologies in modern physics, has gradually penetrated into the fields of soil environment and agricultural production, bringing new solutions for the remediation of polluted soil. Using nanomaterials to remediate polluted arable land has unique advantages.

[0003] The nano-remediation material spraying equipment for contaminated agricultural land consists of a storage unit, a power transmission unit, an intelligent spraying unit, and a chassis. The storage unit is equipped with a stirring device that continuously stirs to ensure the uniform dispersion of the nano-remediation material. The power transmission unit provides power for the operation of the equipment. The sensors in the intelligent spraying unit monitor the degree of soil pollution and topographical changes in real time, and adjust the spraying pressure and flow accordingly. The chassis is adaptable to various terrains. During operation, the power transmission unit drives the material from the storage unit through pipes to the nozzle. Under intelligent control, the nozzle evenly sprays the material onto the contaminated farmland. At the same time, the chassis moves the equipment to complete large-area spraying.

[0004] In existing technologies, some nano-remediation material spraying equipment for contaminated farmland often suffers from problems such as adhesion to the inner wall of the storage tank and blockage of the pipeline due to the high viscosity and agglomeration characteristics of nanomaterials during operation, which seriously affects the spraying efficiency and material utilization rate. For example, traditional equipment relies on a single stirring structure, which cannot effectively break up the sediment at the bottom of the tank, and the pipeline lacks dynamic anti-blocking measures, requiring frequent shutdowns for cleaning. Therefore, a nano-remediation material spraying equipment for contaminated farmland is proposed to solve the above problems. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a nano-remediation material spraying device for contaminated agricultural land, which solves the problems of material adhesion during mixing in the tank and blockage during pipeline transportation.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solution: a nano-remediation material spraying device for agricultural polluted farmland, comprising a base and a support, a spraying mechanism being provided on the outside of the support, a feeding mechanism being provided at the top of the base, a mixing chamber being provided at the rear end of the spraying mechanism, a corrugated pipe being fixedly connected to the rear end of the mixing chamber, a swinging mechanism being provided at the rear end of the corrugated pipe, and a docking mechanism being provided inside the swinging mechanism. The feeding mechanism includes a storage tank, the bottom of which is fixedly connected to the top of the base. A rotating column is rotatably connected inside the storage tank. A stirring assembly is provided outside the rotating column. A fixed box is fixedly connected outside the rotating column. A sliding plate is slidably connected inside the fixed box. A striking block is fixedly connected to the bottom of the sliding plate. A telescopic column is fixedly connected to the top of the sliding plate. A spring is sleeved on the outside of the telescopic column. An inclined plate is fixedly connected to the outside of the storage tank.

[0007] Preferably, the top end of the base is fixedly connected to the bottom end of the bracket, the right end of the storage tank is fixedly connected to the discharge port, the outside of the striking block is in contact with the outside of the inclined plate and the discharge port, and the top end of the telescopic column is fixedly connected to the inside of the fixed box.

[0008] Preferably, one end of the spring is fixedly connected to the top of the slide plate, and the other end of the spring is fixedly connected to the inside of the fixing box.

[0009] Preferably, the stirring assembly includes stirring blades, the interior of which is fixedly connected to the exterior of the rotating column, and a scraper is fixedly connected to the exterior of the rotating column.

[0010] Preferably, the spraying mechanism includes a pneumatic pump, the pneumatic pump is externally fixedly connected to the top of the bracket, an air regulating valve is fixedly connected to the front end of the bracket, an air valve is provided externally to the air regulating valve, an exhaust port is fixedly connected to the top end of the bracket, and the rear end of the pneumatic pump is fixedly connected to the front end of the mixing chamber.

[0011] Preferably, the oscillating mechanism includes a feeding pipe, the front end of which is fixedly connected to the rear end of the corrugated pipe, a fixed frame is fixedly connected to the rear end of the bracket, a drive motor is fixedly connected to the top end of the fixed frame, a rotating rod is fixedly connected to the drive end of the drive motor, a transmission rod is rotatably connected to the rear end of the rotating rod, the bottom end of the transmission rod is rotatably connected to the top end of the feeding pipe, and a sliding block is fixedly connected to the outside of the feeding pipe.

[0012] Preferably, the fixing frame has a guide groove inside, and the sliding block is slidably connected to the inside of the guide groove.

[0013] Preferably, the docking mechanism includes a fixed cylinder, the outside of which is slidably connected to the inside of the conveying pipe, a sliding cylinder is slidably connected inside the fixed cylinder, a plurality of limiting blocks are fixedly connected to the outside of the sliding cylinder, a telescopic column II is fixedly connected to one end of the sliding cylinder near the fixed cylinder, a spring II is sleeved on the outside of the telescopic column II, a limiting groove is opened inside the conveying pipe, a discharge pipe is fixedly connected to one end of the sliding cylinder away from the fixed cylinder, a spray gun is fixedly connected to the outside of the discharge pipe, and a sealing block is fixedly connected to the inside of the conveying pipe.

[0014] Preferably, the outer part of the limiting block is slidably connected to the inside of the limiting groove, and the outer part of the fixing cylinder is in contact with the outer part of the sealing block.

[0015] Preferably, the end of the telescopic column two away from the sliding cylinder is fixedly connected to the inside of the fixed cylinder, and the two ends of the spring two are respectively fixedly connected to the sides of the sliding cylinder and the fixed cylinder.

[0016] This invention provides a spraying device for nano-remediation materials on contaminated agricultural land. It has the following beneficial effects: 1. This invention uses a pneumatic pump to extract raw materials from the storage tank, while a motor drives a rotating column to rotate, which in turn drives a stirring component to stir the raw materials, preventing stagnation and agglomeration. The scraper simultaneously scrapes the tank wall to prevent the raw materials from adhering. The rotating column also drives the fixed box and the striking block to rotate, intermittently impacting the discharge port and the inclined plate, causing the raw materials to vibrate and preventing blockage. After the impact, the sliding plate slides in the fixed box, and the spring buffers and pushes it back to its original position, ensuring that the striking block continues to impact and ensuring stable delivery of the raw materials.

[0017] 2. This invention drives the rotating rod to rotate by starting the drive motor, and the material conveying pipe moves back and forth in the fixed frame by means of the sliding block through the transmission rod, thereby changing the position of the spray gun. This design realizes a large range of swing of the spray gun during the spraying process, effectively expanding the spraying coverage area and making the material spraying more uniform. Compared with traditional equipment, it greatly improves the work efficiency and reduces repeated spraying processes.

[0018] 3. This invention allows for disassembly by pressing and rotating the spray gun, causing the internal sliding cylinder to slide the limiting block longitudinally and laterally within the limiting groove. During installation, the fixed cylinder and sliding cylinder are slid into the feed pipe, and the spray gun is rotated to position the limiting block. The spring's elastic force pushes the sliding cylinder back to its original position, ensuring the fixed cylinder tightly fits the spray gun to achieve a seal. This quick disassembly and assembly structure significantly reduces maintenance difficulty, facilitates timely cleaning or replacement of the spray gun according to operational needs, and extends the equipment's service life. Attached Figure Description

[0019] Figure 1 This is a three-dimensional schematic diagram of the spraying equipment for nano-remediation materials for contaminated agricultural land proposed in this invention. Figure 2 This is a schematic diagram of the discharge port of the nano-remediation material spraying device for contaminated farmland proposed in this invention. Figure 3 This is a schematic diagram of the support structure of the nano-remediation material spraying device for contaminated farmland proposed in this invention. Figure 4 for Figure 3 Enlarged view of point A in the middle; Figure 5 for Figure 3 Enlarged view of point B in the middle; Figure 6 This is a schematic diagram of the rotating rod of the spraying device for nano-remediation materials for contaminated farmland proposed in this invention. Figure 7 This is a schematic diagram of the sealing block of the nano-remediation material spraying device for contaminated farmland proposed in this invention; Figure 8 for Figure 7 A magnified view of point C in the middle.

[0020] The components are as follows: 1. Base; 2. Bracket; 3. Spraying mechanism; 31. Pneumatic pump; 32. Exhaust port; 33. Air regulating valve; 34. Air shut-off valve; 4. Bellows; 5. Mixing chamber; 6. Feeding mechanism; 61. Storage tank; 62. Rotating column; 63. Stirring assembly; 631. Stirring blade; 632. Scraper; 64. Fixing box; 65. Telescopic column one; 66. Spring one; 67. Slide plate; 68. Impact block; 69. Inclined plate; 7. Discharge port; 8. Swinging mechanism; 81. Drive motor; 82. Rotating rod; 83. Transmission rod; 84. Conveying pipe; 85. Sliding block; 86. Guide groove; 87. Fixing frame; 9. Docking mechanism; 91. Fixing cylinder; 92. Sliding cylinder; 93. Limiting block; 94. Telescopic column two; 95. Spring two; 96. Limiting groove; 97. Discharge pipe; 98. Spray gun; 99. Sealing block. Detailed Implementation

[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Example: See attached document Figure 2 To be continued Figure 5This invention provides a nano-remediation material spraying device for agricultural contaminated farmland, including a base 1 and a support 2. A spraying mechanism 3 is provided on the outside of the support 2. The spraying mechanism 3 is responsible for conveying raw materials. A feeding mechanism 6 is provided at the top of the base 1. A mixing chamber 5 is provided at the rear end of the spraying mechanism 3. A corrugated pipe 4 is fixedly connected to the rear end of the mixing chamber 5. A swing mechanism 8 is provided at the rear end of the corrugated pipe 4. A docking mechanism 9 is provided inside the swing mechanism 8. The swing mechanism 8 and the docking mechanism 9 cooperate with each other to realize the position adjustment and convenient disassembly and assembly of the spray gun 98. The feeding mechanism 6 includes a storage tank 61, the bottom of which is fixedly connected to the top of the base 1. The large capacity design of the storage tank 61 can meet the needs of long-term operation, avoiding frequent feeding and improving work efficiency. A rotating column 62 is rotatably connected inside the storage tank 61, and the rotating column 62 is sealed to the storage tank 61 via bearings. An agitator 63 is installed outside the rotating column 62. Through continuous agitation, it can effectively prevent the raw material from accumulating and solidifying due to prolonged standing, ensuring that the raw material always maintains good fluidity. A fixed box 64 is fixedly connected to the outside of the rotating column 62. A sliding plate 67 is slidably connected inside the fixed box 64. A striking block 68 is fixedly connected to the bottom of the sliding plate 67. The sliding plate 67 can slide along the inner wall of the fixed box 64, providing space for the striking block 68. A telescopic column 65 is fixedly connected to the top of the sliding plate 67, and a spring 66 is sleeved on the outside of the telescopic column 65. An inclined plate 69 is fixedly connected to the outside of the storage tank 61. The top of the base 1 is fixedly connected to the bottom of the bracket 2. The right end of component 1 is fixedly connected to a discharge port 7. The outside of the striking block 68 is in contact with the outside of the inclined plate 69 and the discharge port 7. During rotation, the striking block 68 periodically impacts the inclined plate 69 and the discharge port 7, causing the raw material to vibrate and effectively preventing blockage during mixing and conveying. The cooperation of the telescopic column 65 and the spring 66 ensures that the striking block 68 can stably perform reciprocating impact. The top of the telescopic column 65 is fixedly connected to the inside of the fixed box 64. One end of the spring 66 is fixedly connected to the top of the slide plate 67, and the other end of the spring 66 is fixedly connected to the inside of the fixed box 64. The position setting of the spring 66 enables continuous buffering and pushing of the striking block 68. The mixing assembly 63 includes a stirring blade 631. The inside of the stirring blade 631 is fixedly connected to the outside of the rotating column 62. A scraper 632 is fixedly connected to the outside of the rotating column 62. The scraper 632 is made of polyurethane elastomer and continuously scrapes off the adhering layer during rotation, avoiding damage to the tank wall caused by rigid contact.

[0023] See attached document Figures 1 to 3The spraying mechanism 3 includes a pneumatic pump 31, which is externally fixedly connected to the top of the bracket 2. An air regulating valve 33 is fixedly connected to the front end of the bracket 2, and an air valve 34 is provided externally to the air regulating valve 33. An exhaust port 32 is fixedly connected to the top of the bracket 2, and the rear end of the pneumatic pump 31 is fixedly connected to the front end of the mixing chamber 5. The pneumatic pump 31, as the core of the spraying power, is installed at the top of the bracket 2. It generates a strong suction force by compressing air to extract the raw materials in the storage tank 61 and transport them to the mixing chamber 5. Its stable power output ensures the continuity of the spraying operation. The air regulating valve 33 is used to regulate the air intake of the pneumatic pump 31, and the air shut-off valve 34 can quickly cut off the air source when the equipment is maintained or stopped.

[0024] Reference Figure 1 , Figure 3 and Figure 6 The swing mechanism 8 includes a feed pipe 84, the front end of which is fixedly connected to the rear end of the corrugated pipe 4. A fixing frame 87 is fixedly connected to the rear end of the bracket 2, providing a stable mounting base for the swing mechanism 8. A drive motor 81 is fixedly connected to the top end of the fixing frame 87, and a rotating rod 82 is fixedly connected to the drive end of the drive motor 81. A transmission rod 83 is rotatably connected to the rear end of the rotating rod 82, and the bottom end of the transmission rod 83 is rotatably connected to the top end of the feed pipe 84. The drive motor 81 drives the rotating rod 82. The rotating rod 82 converts the rotational motion into the reciprocating oscillation of the material conveying pipe 84 through the transmission rod 83. A sliding block 85 is fixedly connected to the outside of the material conveying pipe 84. A guide groove 86 is opened inside the fixed frame 87. The outside of the sliding block 85 is slidably connected to the inside of the guide groove 86. The sliding block 85 and the guide groove 86 form a sliding guide structure. During the oscillation of the material conveying pipe 84, the sliding block 85 slides along the guide groove 86 to ensure that the oscillation of the material conveying pipe 84 is stable and accurate in direction, and to avoid affecting the spraying effect due to oscillation deviation.

[0025] Reference Figures 6 to 8The docking mechanism 9 includes a fixed cylinder 91, which is externally slidably connected to the inside of the feed pipe 84. The fixed cylinder 91 serves as the connection base between the spray gun 98 and the feed pipe 84, allowing it to slide inside the feed pipe 84, facilitating the installation and disassembly of the spray gun 98 while ensuring a tight connection. An internal sliding cylinder 92 is slidably connected to the fixed cylinder 91, and multiple limiting blocks 93 are fixedly connected to the outside of the sliding cylinder 92. A telescopic column 94 is fixedly connected to one end of the sliding cylinder 92 near the fixed cylinder 91, and a spring 95 is sleeved on the outside of the telescopic column 94. The cooperation between the telescopic column 94 and the spring 95 ensures that the spray gun 98 is securely and reliably installed, and that disassembly is easy, facilitating daily maintenance and replacement of the spray gun 98. A limiting groove 96 is provided inside the feed pipe 84, and the limiting blocks 93 cooperate with the limiting groove 96 inside the feed pipe 84. When the spray gun 98 is moved and rotated, the spray gun 98 can be quickly disassembled and assembled by sliding the limiting block 93 in the limiting groove 96. The end of the sliding cylinder 92 away from the fixed cylinder 91 is fixedly connected to the discharge pipe 97. The spray gun 98 is fixedly connected to the outside of the discharge pipe 97. The sealing block 99 is fixedly connected to the inside of the conveying pipe 84. The spray gun 98 is responsible for evenly spraying the raw material onto the surface of the cultivated land. The sealing block 99 cooperates with the fixed cylinder 91 to form a good sealing effect after the spray gun 98 is installed in place, preventing the raw material from leaking and ensuring the normal operation of the spraying operation. The outside of the limiting block 93 is slidably connected to the inside of the limiting groove 96. The outside of the fixed cylinder 91 is in contact with the outside of the sealing block 99. The end of the telescopic column 94 away from the sliding cylinder 92 is fixedly connected to the inside of the fixed cylinder 91. The two ends of the spring 95 are respectively fixedly connected to the sides of the sliding cylinder 92 and the fixed cylinder 91.

[0026] Working Principle: Step 1: When the spraying equipment is needed, the pneumatic pump extracts the raw material from the storage tank using compressed air. Simultaneously, the operator starts the external motor, which drives the rotating column inside the tank. This agitation of the raw material prevents it from accumulating and solidifying over time. At the same time, the scraper scrapes the inner wall of the tank to prevent the raw material from adhering to it for extended periods. As the rotating column rotates, it also drives the fixed box to rotate, which in turn drives the striking block to rotate. As the striking block rotates, it intermittently impacts the discharge port and the inclined plate, causing the raw materials inside the discharge port and storage tank to vibrate. This prevents blockages during mixing and conveying, ensuring normal material transport. After the striking block impacts, the sliding plate slides inside the fixed box. As the sliding plate slides, the spring cushions it and pushes it when the striking block is not impacting it, causing the sliding plate to move back and forth inside the fixed box, thus ensuring continuous impact.

[0027] Step 2: When the coating material is conveyed inside the corrugated pipe, the drive motor can be started. The drive motor will drive the rotating rod to rotate, which in turn drives the transmission rod to rotate. This causes the transmission rod to drive the material conveying pipe to move back and forth inside the fixed frame through the sliding block. Ultimately, the position of the spray gun is continuously changed, which enables spraying over a large area during the spraying process, improving the spraying range and uniformity, and increasing work efficiency.

[0028] Step 3: When the user needs to clean or replace the spray gun, first press the spray gun, then rotate it. During the pressing process, the sliding cylinder slides inside the fixed cylinder, and the limiting block slides longitudinally inside the limiting groove. When rotating the spray gun, the limiting block slides laterally inside the guide groove, allowing it to slide out from the inside of the guide groove, thus disassembling the entire spray gun. When installing the spray gun, slide the outside of the fixed cylinder and sliding cylinder into the feed pipe. Simultaneously, the outside of the limiting block slides longitudinally inside the limiting groove, compressing the spring. Then rotate the spray gun, causing the sliding cylinder and fixed cylinder to rotate inside the feed pipe. The limiting block slides laterally inside the limiting groove. Then release the control of the spray gun. The accumulated elastic force of the spring will automatically push the sliding cylinder outwards from the fixed cylinder, causing the fixed cylinder to fit against the outside of the spray gun, ensuring a seal. Simultaneously, the limiting block slides longitudinally inside the limiting groove and is confined within it, achieving the installation effect. This quick disassembly and sealing structure facilitates cleaning and replacement of the spray gun as needed.

[0029] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A spraying device for nano-remediation materials on contaminated agricultural land, comprising a base (1) and a support (2), characterized in that, The bracket (2) is provided with a spraying mechanism (3) on the outside, the base (1) is provided with a feeding mechanism (6) at the top, the spraying mechanism (3) is provided with a mixing chamber (5) at the rear end, the mixing chamber (5) is fixedly connected with a bellows (4) at the rear end, the bellows (4) is provided with a swinging mechanism (8) at the rear end, and the swinging mechanism (8) is provided with a docking mechanism (9) inside. The feeding mechanism (6) includes a storage tank (61), the bottom end of which is fixedly connected to the top end of the base (1). A rotating column (62) is rotatably connected inside the storage tank (61). A stirring assembly (63) is provided outside the rotating column (62). A fixed box (64) is fixedly connected outside the rotating column (62). A sliding plate (67) is slidably connected inside the fixed box (64). A striking block (68) is fixedly connected to the bottom end of the sliding plate (67). A telescopic column (65) is fixedly connected to the top end of the sliding plate (67). A spring (66) is sleeved on the outside of the telescopic column (65). An inclined plate (69) is fixedly connected to the outside of the storage tank (61).

2. The spraying equipment for nano-remediation materials on contaminated agricultural land according to claim 1, characterized in that, The top of the base (1) is fixedly connected to the bottom of the bracket (2), the right end of the storage tank (61) is fixedly connected to the discharge port (7), the outside of the striking block (68) is in contact with the outside of the inclined plate (69) and the discharge port (7), and the top of the telescopic column (65) is fixedly connected to the inside of the fixed box (64).

3. The spraying equipment for nano-remediation materials on contaminated agricultural land according to claim 1, characterized in that, One end of the spring (66) is fixedly connected to the top of the slide plate (67), and the other end of the spring (66) is fixedly connected to the inside of the fixing box (64).

4. The spraying equipment for nano-remediation materials on contaminated agricultural land according to claim 1, characterized in that, The stirring assembly (63) includes a stirring blade (631), the interior of which is fixedly connected to the exterior of the rotating column (62), and a scraper (632) is fixedly connected to the exterior of the rotating column (62).

5. The spraying equipment for nano-remediation materials on contaminated agricultural land according to claim 1, characterized in that, The spraying mechanism (3) includes a pneumatic pump (31), which is externally fixedly connected to the top of the bracket (2). An air regulating valve (33) is fixedly connected to the front end of the bracket (2). An air regulating valve (34) is provided externally to the air regulating valve (33). An exhaust port (32) is fixedly connected to the top end of the bracket (2). The rear end of the pneumatic pump (31) is fixedly connected to the front end of the mixing chamber (5).

6. The spraying equipment for nano-remediation materials on contaminated agricultural land according to claim 1, characterized in that, The swing mechanism (8) includes a feeding pipe (84), the front end of which is fixedly connected to the rear end of the corrugated pipe (4), a fixed frame (87) is fixedly connected to the rear end of the bracket (2), a drive motor (81) is fixedly connected to the top end of the fixed frame (87), a rotating rod (82) is fixedly connected to the drive end of the drive motor (81), a transmission rod (83) is rotatably connected to the rear end of the rotating rod (82), and the bottom end of the transmission rod (83) is rotatably connected to the top end of the feeding pipe (84). A sliding block (85) is fixedly connected to the outside of the feeding pipe (84).

7. The spraying equipment for nano-remediation materials on contaminated agricultural land according to claim 6, characterized in that, The fixed frame (87) has a guide groove (86) inside, and the sliding block (85) is slidably connected to the inside of the guide groove (86).

8. The spraying equipment for nano-remediation materials on contaminated agricultural land according to claim 6, characterized in that, The docking mechanism (9) includes a fixed cylinder (91), the outside of which is slidably connected to the inside of the conveying pipe (84). A sliding cylinder (92) is slidably connected inside the fixed cylinder (91). A plurality of limiting blocks (93) are fixedly connected to the outside of the sliding cylinder (92). A telescopic column (94) is fixedly connected to one end of the sliding cylinder (92) near the fixed cylinder (91). A spring (95) is sleeved on the outside of the telescopic column (94). A limiting groove (96) is opened inside the conveying pipe (84). A discharge pipe (97) is fixedly connected to one end of the sliding cylinder (92) away from the fixed cylinder (91). A spray gun (98) is fixedly connected to the outside of the discharge pipe (97). A sealing block (99) is fixedly connected inside the conveying pipe (84).

9. The spraying equipment for nano-remediation materials on contaminated agricultural land according to claim 8, characterized in that, The outer side of the limiting block (93) is slidably connected to the inside of the limiting groove (96), and the outer side of the fixing cylinder (91) is in contact with the outer side of the sealing block (99).

10. The spraying equipment for nano-remediation materials on contaminated agricultural land according to claim 8, characterized in that, The end of the telescopic column two (94) away from the sliding cylinder (92) is fixedly connected to the inside of the fixed cylinder (91), and the two ends of the spring two (95) are respectively fixedly connected to the side of the sliding cylinder (92) and the fixed cylinder (91).

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