Municipal landscaping soil remediation device

Abstract

The invention relates to the technical field of garden soil treatment, and discloses a municipal landscaping soil remediation device which comprises a crawler base, a liquid storage tank and a U-shaped support, a pulse injection mechanism is arranged at the top of the liquid storage tank, and the pulse injection mechanism is used for injecting a remediation agent into soil in a pulse mode; and an air pressure impact mechanism is arranged at the top of the crawler base and used for enlarging gaps between deep soil, and a mixing and stirring mechanism is arranged on the left side of the top of the crawler base and used for mixing and stirring a repairing agent in the liquid storage tank. The spraying block is obliquely inserted into soil through the electric telescopic rod, the metering pump pressurizes and feeds a remediation agent into the hose to enable the remediation agent to flow in a pulse mode, the one-way valve prevents the agent from flowing back, the remediation agent enters the spraying block through the corrugated pipe and the connecting block and then is injected into deep soil through the nozzle, pulse type agent injection is completed, and multi-angle deep remediation of greenbelts with different slopes is achieved.

Description

Technical Field

[0001] This invention relates to the field of garden soil remediation technology, specifically a municipal garden greening soil remediation device. Background Technology

[0002] Municipal landscaping soil remediation devices are key equipment for urban ecological environment governance. They are mainly used to improve the soil of urban green spaces damaged by industrial pollution, heavy metal deposition, and salinization. Through physical, chemical, or biological means, they restore soil fertility and ecological functions, ensuring the healthy growth of plants. These devices play an irreplaceable role in improving the quality of urban landscapes, enhancing the stability of ecosystems, and promoting harmonious coexistence between humans and nature. They are an important technical support for the sustainable development of modern cities.

[0003] Early municipal landscaping soil remediation devices were relatively simple in structure, mainly consisting of tilling equipment and a simple spraying device. They treated the surface soil by tilling and spraying chemical remediation agents. However, these devices had significant drawbacks: firstly, the tilling depth was limited, making it difficult to reach deeply contaminated soil; secondly, the chemical remediation agents relied solely on gravity penetration, resulting in low diffusion efficiency in dense soil and poor deep remediation effects. To address these issues, existing devices employ a spiral drill rod spraying structure. The drill rod rotates to penetrate deep into the soil, while the remediation agent is injected through side holes in the drill rod and propelled by a high-pressure injection pump. While these improvements have increased the remediation depth to some extent, they still cannot meet the needs of deep soil remediation. During drilling, the auger rod structure may get stuck due to excessive soil resistance, and the remediation agent sprayed from the side holes is squeezed by the soil and has difficulty spreading to the surrounding area. Although the high-pressure injection pump can provide greater pressure, continuous high-pressure delivery not only consumes a lot of energy, but also causes the remediation agent to form concentrated channels in the soil, which cannot be evenly distributed. This results in over-remediation in some areas and under-remediation in others, leading to low remediation efficiency and making it difficult to achieve complete remediation of deep contaminated soil. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a soil remediation device for municipal landscaping and greening, which solves the problems of continuous high-pressure delivery not only consuming huge amounts of energy, but also causing the remediation agent to form concentrated channels in the soil, making it impossible to distribute evenly, resulting in over-remediation in some areas and under-remediation in others.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a municipal landscaping soil remediation device, comprising a tracked base, a storage tank, and a U-shaped support. A pulse injection mechanism is provided on the top of the storage tank for pulsed injection of a remediation agent into the soil. A pneumatic impact mechanism is provided on the top of the tracked base for increasing the gaps between deep soil layers. A mixing and stirring mechanism is provided on the top left side of the tracked base for mixing and stirring the remediation agent in the storage tank. A lifting assembly is provided on the right side of the tracked base for controlling the injection depth of the remediation agent. The right side of the tracked base is rotatably connected to the left side of the U-shaped support. The pulse injection mechanism includes a metering pump and a spraying assembly. The bottom end of the metering pump is fixedly connected to the top of the storage tank. One end of the metering pump is connected to the spraying assembly through a delivery pipeline, and the other end of the metering pump passes through the top of the storage tank and is connected to a suction pipe.

[0006] With the above technical solution, when the spraying component reaches the predetermined position, the metering pump starts to start. Its internal plunger or diaphragm reciprocates. When it moves backward, it draws the repair agent from the storage tank through the liquid extraction pipe. When it moves forward, it pressurizes the repair agent and sends it into the delivery pipeline, making it flow in a pulse form to complete the pulsed drug injection.

[0007] Preferably, the delivery pipeline of the pulse injection mechanism includes a hose and a bellows. One end of the hose is connected to the metering pump, and the other end is connected to the spraying assembly through the bellows. A one-way valve is fixedly connected to the outer wall of the hose.

[0008] Through the above technical solution, the remediation agent pushed by the metering pump will enter the hose and the corrugated pipe. The corrugated pipe allows the delivery pipeline to be adjusted according to the depth of soil remediation, and the one-way valve ensures that the agent flows in one direction and prevents backflow.

[0009] Preferably, the spraying component of the pulse injection mechanism includes a connecting block and a spraying block. The top end of the connecting block is connected to the bellows, and the bottom end is connected to the spraying block. A conical block is fixedly connected to the bottom end of the spraying block, and a flow-diverting component is provided inside.

[0010] Through the above technical solution, the connecting block provides driving space for the subsequent lifting components, facilitates the entry of the remediation agent in the corrugated pipe into the spraying block, and the conical block makes it easier for the entire spraying component to be inserted into the soil.

[0011] Preferably, the diversion component includes a cavity, which is formed inside the spray block. The outer wall of the spray block has multiple connecting holes, one end of each connecting hole is connected to the inner wall of the cavity, and the other end extends to the outside of the spray block. A nozzle is fixedly connected to the inner wall of each connecting hole.

[0012] With the above technical solution, after the agent enters the cavity, it is diverted into the connecting hole, and then sprayed into the surrounding soil through the nozzle.

[0013] Preferably, the pneumatic impact mechanism includes an air compressor, a pressure balance tank, and a solenoid valve. The bottom end of the air compressor is fixedly connected to the top front side of the track base. The air outlet of the air compressor is connected to the air inlet of the pressure balance tank through an air pipe. The air outlet of the pressure balance tank is connected to one end of a three-way pipe through a connecting pipe. The solenoid valve is fixedly connected to the outer wall of the connecting pipe. The other end of the three-way pipe is connected to the middle of the outer wall of the flexible hose.

[0014] The above technical solution involves compressing air with an air compressor, storing it in a pressure balance tank via an air pipe, and then opening a solenoid valve when the spray block reaches the predetermined depth. At this time, the compressed air in the pressure balance tank enters the hose through the connecting pipe and the three-way pipe, and is sprayed onto the soil through the nozzle of the spray block, which increases the gap between the surrounding soil, thereby completing the soil pretreatment to facilitate the subsequent penetration of the pesticide.

[0015] Preferably, the mixing and stirring mechanism includes a DC motor, a permanent magnet rotor, and a conductor rotor. The bottom end of the DC motor is fixedly connected to the top left side of the track base. A bevel gear is fixedly connected to the output end of the DC motor. A bevel gear is meshed with the outer wall of the bevel gear. The bottom end of the permanent magnet rotor is fixedly connected to the top end of the bevel gear. A concave groove is provided at the bottom end of the liquid storage tank. The outer wall of the permanent magnet rotor engages with the inner wall of the concave groove. The conductor rotor is rotatably connected to the bottom end of the inner wall of the liquid storage tank. Multiple stirring blades are fixedly connected to its outer wall, and multiple mixing plates are fixedly connected to its top end.

[0016] Through the above technical solution, the DC motor drives the bevel gear to rotate, and the bevel gear rotates through meshing transmission. The bevel gear drives the permanent magnet rotor to rotate, and the magnetic field drives the conductor rotor in the storage tank to rotate, so that the stirring blades and mixing plates on the conductor rotor stir and mix the repair agent, thereby ensuring the uniformity of the agent mixture.

[0017] Preferably, the lifting assembly includes a first hydraulic rod, a second hydraulic rod, and an electric telescopic rod. A limiting groove is formed on the top right side of the track base. One end of the first hydraulic rod is rotatably connected to the inner wall of the limiting groove, and the other end is rotatably connected to the left side of the U-shaped bracket. The bottom end of the second hydraulic rod is fixedly connected to the bottom end of the inner wall of the U-shaped bracket, and a sliding plate is fixedly connected to its top end. The top end of the electric telescopic rod is fixedly connected to the bottom end of the sliding plate, and the bottom end is fixedly connected to the top end of the connecting block.

[0018] Through the above technical solution, the hydraulic rod one in the limiting groove is rotated and extended, pushing the U-shaped bracket hinged to it to rotate around the connecting shaft, adjusting the overall tilt angle. The hydraulic rod two at the bottom of the inner wall of the U-shaped bracket extends synchronously, causing the sliding plate to slide up and down, further adjusting the height. The electric telescopic rod at the bottom of the sliding plate extends, pushing the spray block and cone block down through the connecting block, so that the spray block penetrates to the preset repair depth.

[0019] Preferably, the top front and rear sides of the track base are fixedly connected with arc-shaped support plates, the bottom of the outer wall of the liquid storage tank is fixedly connected to the inner wall of the arc-shaped support plate, and the top of the liquid storage tank is threadedly connected with a tank cover plate.

[0020] Through the above technical solution, the arc-shaped support plate provides stable support for the liquid storage tank, and the tank cover plate on the top of the liquid storage tank facilitates the addition or inspection of repair agent.

[0021] Preferably, the pulse injection mechanism, the pneumatic impact mechanism, and the mixing mechanism are linked by a PLC controller. The mixing mechanism starts first, and the pneumatic impact mechanism starts after the mixing mechanism starts. The solenoid valve opens for 3-5 seconds, and the metering pump starts after the solenoid valve closes. The PLC controller can adjust the pulse frequency of the metering pump according to the operating status of the mixing mechanism.

[0022] The above technical solution uses a PLC controller to achieve intelligent linkage between pulse injection, pneumatic impact, and mixing mechanisms. During operation, the mixing mechanism starts first to ensure uniformity of the remediation agent and avoid uneven mixing affecting the remediation effect. Then, the pneumatic impact mechanism starts, and the solenoid valve opens for 3-5 seconds, using compressed air to impact the soil and create gaps, creating conditions for agent penetration. After the solenoid valve closes, the metering pump starts to inject the remediation agent. The PLC can adjust the pulse frequency of the metering pump according to the operating status of the mixing mechanism, achieving precise connection of the "mixing-pretreatment-injection" sequence. This ensures agent uniformity, improves soil penetration efficiency, and avoids the problem of poor remediation effect caused by independent operation of each mechanism.

[0023] Preferably, a soil compaction sensor is installed on the track base, and a reagent concentration detection unit is installed in the middle of the inner wall of the liquid storage tank. Both the sensor and the detection unit are connected to a PLC controller. The PLC controller can adjust the compressed air output pressure of the pneumatic impact mechanism and the pulse frequency of the pulse injection mechanism according to the detection results of the soil compaction sensor, and can adjust the speed of the DC motor according to the detection results of the reagent concentration detection unit.

[0024] The above technical solution uses a soil compaction sensor and a reagent concentration detection unit to collect data in real time. Both are linked to a PLC controller. When the soil compaction sensor detects excessive soil resistance, the PLC controller immediately increases the compressed air output pressure of the air pressure impact mechanism to enhance the soil impact effect and widen the gaps. At the same time, it increases the pulse frequency of the pulse injection mechanism to ensure efficient penetration of the remediation agent. If the reagent concentration detection unit detects uneven concentration, the PLC controller adjusts the speed of the DC motor in the mixing mechanism to accelerate the mixing rate and restore the uniformity of the reagent. Overall, the system achieves dynamic adaptation between the soil environment and the reagent state, avoiding low remediation efficiency and poor effect caused by soil resistance or uneven reagent distribution.

[0025] This invention provides a soil remediation device for municipal landscaping and greening. It has the following beneficial effects: 1. This invention uses an electric telescopic rod to tilt the spray block into the soil. Once it reaches the predetermined position, the metering pump starts, and the internal plunger or diaphragm reciprocates, pressurizing the remediation agent and sending it into the hose in a pulsed flow. A one-way valve on the outer wall of the hose prevents the agent from flowing back. The remediation agent passes through the corrugated pipe and connecting block into the cavity of the spray block, and then is injected into the deep soil through the nozzle in the connecting hole, completing the pulsed agent injection and achieving multi-angle deep remediation of green spaces with different slopes.

[0026] 2. This invention compresses air by starting an air compressor, stores it in a pressure balance tank through an air pipe, and when the spray block reaches a predetermined depth, the solenoid valve opens. The compressed air in the pressure balance tank enters the hose through the connecting pipe and the three-way pipe, and is sprayed onto the soil through the nozzle of the spray block, which increases the gaps in the surrounding soil, completes the soil pretreatment, and facilitates the subsequent penetration of the agent.

[0027] 3. This invention starts a DC motor to drive a bevel gear to rotate. The bevel gear rotates through meshing transmission, which in turn drives a permanent magnet rotor to rotate. The magnetic field drives the conductor rotor in the storage tank to rotate, so that the stirring blades and mixing plates on the conductor rotor stir and mix the repair agent, ensuring the uniformity of the agent mixing. Attached Figure Description

[0028] Figure 1 This is a perspective view of the present invention; Figure 2 This is a front view of the present invention; Figure 3 This is an exploded view of the track base of the present invention; Figure 4 This is a cross-sectional view of the conical block of the present invention; Figure 5 This is a cross-sectional view of the liquid storage tank of the present invention; Figure 6 This is a schematic diagram of the pulse injection mechanism of the present invention; Figure 7 This is a schematic diagram of the U-shaped bracket of the present invention; Figure 8 This is a schematic diagram of the track base of the present invention.

[0029] Explanation of reference numerals in the attached figures: 1. Track base; 2. Pulse injection mechanism; 21. Metering pump; 22. Hoses; 23. Check valve; 24. Bellows; 25. Connecting block; 26. Spray block; 27. Conical block; 28. Liquid extraction pipe; 29. ​​Diverter assembly; 291. Cavity; 292. Connecting hole; 293. Nozzle; 3. Pneumatic impact mechanism; 31. Air compressor; 32. Air pipe; 33. Pressure balance tank; 34. Connecting pipe; 35. Solenoid valve; 36. 1. Three-way pipe; 4. Mixing and stirring mechanism; 41. DC motor; 42. Bevel gear; 43. Bevel gear; 44. Permanent magnet rotor; 45. Conductor rotor; 46. Stirring blade; 47. Mixing plate; 48. Concave groove; 5. Liquid storage tank; 6. U-shaped bracket; 7. Lifting assembly; 71. Hydraulic rod one; 72. Hydraulic rod two; 73. Sliding plate; 74. Electric telescopic rod; 75. Limiting groove; 8. Arc-shaped support plate; 9. Tank cover plate. Detailed Implementation

[0030] 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.

[0031] Please see the appendix Figure 4 Appendix Figure 6 and attached Figure 7This invention provides a municipal landscaping soil remediation device, including a tracked base 1, a liquid storage tank 5, and a U-shaped support 6. A pulse injection mechanism 2 is provided on the top of the liquid storage tank 5 for pulsed injection of remediation agent into the soil. A pneumatic impact mechanism 3 is provided on the top of the tracked base 1 for increasing the gaps between deep soil layers. A mixing and stirring mechanism 4 is provided on the top left side of the tracked base 1 for mixing and stirring the remediation agent in the liquid storage tank 5. A lifting component 7 is provided on the right side of the tracked base 1 for controlling the injection depth of the remediation agent. The right side of the tracked base 1 is rotatably connected to the left side of the U-shaped support 6. The pulse injection mechanism 2 includes a metering pump 21 and a spraying assembly. The bottom end of the metering pump 21 is fixedly connected to the top of the storage tank 5. One end of the metering pump 21 is connected to the spraying assembly through a delivery pipeline, and the other end of the metering pump 21 passes through the top of the storage tank 5 and is connected to a suction pipe 28. When the spraying assembly reaches the predetermined position, the metering pump 21 starts, and its internal plunger or diaphragm reciprocates. When moving backward, it draws in the repair agent from the storage tank 5 through the suction pipe 28. When moving forward, it pressurizes the repair agent and sends it into the delivery pipeline, making it flow in a pulsed form to complete the pulsed drug injection. The delivery pipeline of the pulse injection mechanism 2 includes a hose 22 and a bellows 24. One end of the hose 22 is connected to the metering pump 21, and the other end is connected to the spraying assembly through the bellows 24. A one-way valve 23 is fixedly connected to the outer wall of the hose 22. The remediation agent pushed by the metering pump 21 will enter the hose 22 and the corrugated pipe 24. The corrugated pipe 24 allows the delivery pipeline to be adjusted according to the depth of soil remediation, and the one-way valve 23 ensures that the agent flows in one direction and prevents backflow. The spraying component of the pulse injection mechanism 2 includes a connecting block 25 and a spraying block 26. The top end of the connecting block 25 is connected to the corrugated pipe 24, and the bottom end is connected to the spraying block 26. A conical block 27 is fixedly connected to the bottom end of the spraying block 26, and a diversion component 29 is provided inside. The connecting block 25 provides driving space for the subsequent lifting component 7, and at the same time facilitates the remediation agent in the corrugated pipe 24 to enter the spraying block 26. The conical block 27 makes it easier for the entire spraying component to be inserted into the soil. The diversion component 29 includes a cavity 291, which is located inside the spray block 26. The outer wall of the spray block 26 has multiple connecting holes 292. One end of each connecting hole 292 is connected to the inner wall of the cavity 291, and the other end extends to the outside of the spray block 26. A nozzle 293 is fixedly connected to the inner wall of the connecting hole 292. After the repair agent enters the cavity 291, it is diverted into the connecting hole 292 and then sprayed into the surrounding soil through the nozzle 293. The lifting assembly 7 includes a hydraulic rod 71, a hydraulic rod 72, and an electric telescopic rod 74. A limiting groove 75 is provided on the top right side of the track base 1. One end of the hydraulic rod 71 is rotatably connected to the inner wall of the limiting groove 75, and the other end is rotatably connected to the left side of the U-shaped bracket 6. The bottom end of the hydraulic rod 72 is fixedly connected to the bottom end of the inner wall of the U-shaped bracket 6, and a sliding plate 73 is fixedly connected to the top end. The top end of the electric telescopic rod 74 is fixedly connected to the bottom end of the sliding plate 73, and the bottom end is fixedly connected to the top end of the connecting block 25. Arc-shaped support plates 8 are fixedly connected to the front and rear sides of the top of the track base 1. The bottom end of the outer wall of the liquid storage tank 5 is fixedly connected to the inner wall of the arc-shaped support plate 8. A tank cover plate 9 is threadedly connected to the top of the liquid storage tank 5. Specifically, the hydraulic rod 71 within the limiting groove 75 rotates and extends, pushing the U-shaped bracket 6, which is hinged to it, to rotate around the connecting shaft, adjusting the overall tilt angle. Simultaneously, the hydraulic rod 72 at the bottom of the inner wall of the U-shaped bracket 6 extends, causing the sliding plate 73 to slide up and down, further adjusting the height. The electric telescopic rod 74 at the bottom of the sliding plate 73 extends, pushing the spray block 26 and the conical block 27 downwards via the connecting block 25, allowing the spray block 26 to penetrate to the preset repair depth. During this process, the bellows 24 extends and retracts to ensure the connectivity between the hose 22 and the connecting block 25. Simultaneously, with the coordinated action of the hydraulic rods 71 ​​and 72, the U-shaped bracket 6 and the sliding plate 73 are adjusted, and the electric telescopic rod extends... The retractable rod 74 allows the spray block 26 to be tilted and inserted into the soil. When the spray block 26 reaches the predetermined position, the metering pump 21 starts, and its internal plunger or diaphragm reciprocates. When moving backward, it draws in the remediation agent from the storage tank 5 through the suction pipe 28. When moving forward, it pressurizes the remediation agent and sends it into the hose 22, making it flow in a pulse form. The one-way valve 23 on the outer wall of the hose 22 ensures that the agent flows in one direction and prevents backflow. The remediation agent passes through the corrugated pipe 24 and the connecting block 25 in sequence, enters the cavity 291 of the spray block 26, and is then injected into the deep soil through the nozzle 293 in the connecting hole 292, completing the pulsed agent injection, thereby achieving multi-angle deep remediation of green spaces with different slopes.

[0032] See appendix Figure 1 Appendix Figure 2 and attached Figure 6 The pneumatic impact mechanism 3 includes an air compressor 31, a pressure balance tank 33, and a solenoid valve 35. The bottom end of the air compressor 31 is fixedly connected to the top front side of the track base 1. The air outlet of the air compressor 31 is connected to the air inlet of the pressure balance tank 33 through an air pipe 32. The air outlet of the pressure balance tank 33 is connected to one end of a three-way pipe 36 through a connecting pipe 34. The solenoid valve 35 is fixedly connected to the outer wall of the connecting pipe 34. The other end of the three-way pipe 36 is connected to the middle of the outer wall of the hose 22. When the solenoid valve 35 is opened, the compressed air in the pressure balance tank 33 enters the hose 22 through the connecting pipe 34 and the three-way pipe 36, and is sprayed onto the soil through the nozzle 293 of the spray block 26. Specifically, compressed air is generated by starting the air compressor 31 and stored in the pressure balance tank 33 through the air pipe 32. When the spray block 26 reaches the predetermined depth, the solenoid valve 35 is opened. At this time, the compressed air in the pressure balance tank 33 enters the hose 22 through the connecting pipe 34 and the three-way pipe 36, and is sprayed onto the soil through the nozzle 293 of the spray block 26, which increases the gap between the surrounding soil, thereby completing the soil pretreatment to facilitate the subsequent penetration of the agent.

[0033] See appendix Figure 1 Appendix Figure 3 and attached Figure 5 The mixing and stirring mechanism 4 includes a DC motor 41, a permanent magnet rotor 44, and a conductor rotor 45. The bottom end of the DC motor 41 is fixedly connected to the top left side of the track base 1. A bevel gear 42 is fixedly connected to the output end of the DC motor 41. A bevel gear 43 is meshed with the outer wall of the bevel gear 42. The bottom end of the permanent magnet rotor 44 is fixedly connected to the top end of the bevel gear 43. When the DC motor 41 is started, it drives the bevel gear 42 to rotate. Through meshing transmission, the bevel gear 43 rotates. The bevel gear 43 drives the permanent magnet rotor 44 to rotate. A concave groove 48 is provided at the bottom end of the liquid storage tank 5. The outer wall of the permanent magnet rotor 44 is engaged with the inner wall of the concave groove 48. The conductor rotor 45 is rotatably connected to the bottom end of the inner wall of the liquid storage tank 5. Multiple stirring blades 46 are fixedly connected to its outer wall, and multiple mixing plates 47 are fixedly connected to its top end. The conductor rotor 45 in the liquid storage tank 5 is driven to rotate by the magnetic field, so that the stirring blades 46 and mixing plates 47 on the conductor rotor 45 stir and mix the repair agent. Specifically, the DC motor 41 is started to drive the bevel gear 42 to rotate, and the bevel gear 43 is rotated through meshing transmission. The bevel gear 43 drives the permanent magnet rotor 44 to rotate, and the magnetic field drives the conductor rotor 45 in the liquid storage tank 5 to rotate, so that the stirring blades 46 and mixing plates 47 on the conductor rotor 45 stir and mix the repair agent, thereby ensuring the uniformity of the agent mixture.

[0034] See appendix Figure 2 Appendix Figure 5 and attached Figure 8The pulse injection mechanism 2, the pneumatic impact mechanism 3, and the mixing mechanism 4 are linked by a PLC controller. The mixing mechanism 4 starts first, followed by the pneumatic impact mechanism 3. The solenoid valve 35 opens for 3-5 seconds, and the metering pump 21 starts after the solenoid valve 35 closes. The PLC controller can adjust the pulse frequency of the metering pump 21 according to the operating status of the mixing mechanism 4. The PLC controller links the pulse injection mechanism 2, the pneumatic impact mechanism 3, and the mixing mechanism 4: the mixing mechanism 4 starts first to ensure uniformity of the repair agent; then the pneumatic impact mechanism 3 starts, the solenoid valve 35 opens for 3-5 seconds, and compressed air impacts the soil to form gaps. After the solenoid valve 35 closes, the metering pump 21 starts injecting the agent. The PLC can also adjust the pulse frequency of the metering pump 21 according to the mixing status. A soil compaction sensor is installed on the track base 1, and a pesticide concentration detection unit is installed in the middle of the inner wall of the liquid storage tank 5. Both the sensor and the detection unit are connected to the PLC controller. The PLC controller can adjust the compressed air output pressure of the air pressure impact mechanism 3 and the pulse frequency of the pulse injection mechanism 2 according to the detection results of the soil compaction sensor. It can also adjust the speed of the DC motor 41 according to the detection results of the pesticide concentration detection unit. The soil compaction sensor and the pesticide concentration detection unit collect data in real time and link with the PLC controller: when the soil resistance is too high, the PLC increases the compressed air pressure of the air pressure impact mechanism 3 to widen the soil gaps, and at the same time increases the frequency of the pulse injection mechanism 2 to ensure pesticide penetration. When the pesticide concentration is uneven, the PLC adjusts the speed of the DC motor 41 of the mixing and stirring mechanism 4 to speed up the mixing and restore uniformity. Specifically, the various units work together through a PLC controller. First, the mixing and stirring mechanism 4 starts, and the DC motor 41 drives the stirring components to stir the remediation agent in the storage tank 5. The agent concentration detection unit in the storage tank 5 monitors the concentration in real time. If the concentration is uneven, the signal is transmitted to the PLC controller, which immediately adjusts the speed of the DC motor 41 to ensure uniform agent distribution. After the agent reaches the standard, the PLC controller starts the pneumatic impact mechanism 3. The air compressor 31 generates compressed air and stores it in the pressure balance tank 33. At the same time, the soil compaction sensor on the track base 1 detects the soil condition. If the compaction is high, the controller increases the compressed air output pressure. Then, the solenoid valve 35 opens for 3-5 seconds, and the compressed air is sprayed out from the spraying components through the pipeline, impacting the soil to form gaps. After the solenoid valve 35 closes, the PLC controller starts the metering pump 21 of the pulse injection mechanism 2. According to the operating status of the mixing and stirring mechanism 4 and the data from the soil compaction sensor, the pulse frequency of the metering pump 21 is adjusted, and the remediation agent is injected into the soil through the delivery pipeline and the spraying components to complete the deep remediation.

[0035] Working principle: First, the hydraulic rod 71 in the limiting groove 75 rotates and extends, pushing the U-shaped bracket 6, which is hinged to it, to rotate around the connecting shaft, adjusting the overall tilt angle. Simultaneously, the hydraulic rod 72 at the bottom of the inner wall of the U-shaped bracket 6 extends, causing the sliding plate 73 to slide up and down, further adjusting the height. The electric telescopic rod 74 at the bottom of the sliding plate 73 extends, pushing the spray block 26 and the conical block 27 downwards through the connecting block 25, allowing the spray block 26 to penetrate to the preset repair depth. During this process, the corrugated pipe 24 extends and retracts to ensure the connectivity between the hose 22 and the connecting block 25. Simultaneously, with the cooperation of the hydraulic rods 71 ​​and 72, the U-shaped bracket 6 and the sliding plate 73 are adjusted, and with the electric telescopic rod 74, the spray block 26 can be tilted and inserted into the soil. Before this process starts, the mixture... The mixing mechanism 4 has been running for a period of time in advance to ensure that the repair agent in the storage tank 5 is in a uniform state, providing qualified agents for subsequent pulse injection. When the spray block 26 reaches the predetermined position, the metering pump 21 starts, and its internal plunger or diaphragm reciprocates. When it moves backward, it draws the repair agent from the storage tank 5 through the suction pipe 28. When it moves forward, it pressurizes the repair agent and sends it into the hose 22, making it flow in a pulse form. The one-way valve 23 on the outer wall of the hose 22 ensures that the agent flows in one direction and prevents backflow. The repair agent passes through the corrugated pipe 24 and the connecting block 25 in sequence, enters the cavity 291 of the spray block 26, and is then injected into the deep soil through the nozzle 293 in the connecting hole 292, completing the pulse agent injection, thereby achieving multi-angle deep repair of green areas with different slopes. Furthermore, through the pneumatic impact mechanism 3, compressed air is generated in the deep soil by starting the air compressor 31, and stored in the pressure balance tank 33 through the air pipe 32. The start of the pneumatic impact mechanism 3 is controlled by the PLC controller according to the operating status of the mixing and stirring mechanism 4. It must be started only after the mixing and stirring mechanism 4 has completed the initial stirring and the concentration of the repair agent has stabilized. When the spray block 26 reaches the predetermined depth, the solenoid valve 35 is opened. At this time, the compressed air in the pressure balance tank 33 enters the hose 22 through the connecting pipe 34 and the three-way pipe 36, and is sprayed into the soil through the nozzle 293 of the spray block 26, which increases the gap between the surrounding soil, thereby completing the soil pretreatment to facilitate the subsequent penetration of the agent. At the same time, the duration of the pneumatic impact is matched with the pulse frequency of the pulse injection mechanism 2 to ensure that the repair agent injected by the pulse can be received immediately after the soil gaps are formed, and to prevent the gaps from closing due to excessive time. Simultaneously, the mixing and stirring mechanism 4 is started at the initial stage of device operation. The DC motor 41 drives the bevel gear 42 to rotate, and through meshing transmission, the bevel gear 43 rotates. The bevel gear 43 drives the permanent magnet rotor 44 to rotate, and the magnetic field drives the conductor rotor 45 in the storage tank 5 to rotate, so that the stirring blades 46 and mixing plates 47 on the conductor rotor 45 stir and mix the repair agent. During the stirring process, the PLC controller receives the drug concentration detection signal in the storage tank 5 in real time. When the concentration fluctuation is detected, the speed of the DC motor 41 will be adjusted synchronously, and the start time of the metering pump 21 of the pulse injection mechanism 2 will be delayed or accelerated accordingly to ensure that the repair agent is stirred evenly before entering the injection stage, thereby ensuring the uniformity of drug mixing.

[0036] 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 municipal landscaping soil remediation device, comprising a caterpillar base (1), a liquid storage tank (5) and a U-shaped support (6), characterized in that, The top of the liquid storage tank (5) is provided with a pulse injection mechanism (2) for pulse injection of the remediation agent into the soil, the top of the crawler base (1) is provided with a pneumatic impact mechanism (3) for increasing the gap between the deep soil, the top left side of the crawler base (1) is provided with a mixing stirring mechanism (4) for mixing and stirring the remediation agent in the liquid storage tank (5), the right side of the crawler base (1) is provided with a lifting assembly (7) for controlling the depth of remediation agent injection, and the right side of the crawler base (1) is rotatably connected with the left side of the U-shaped support (6). The pulse injection mechanism (2) comprises a metering pump (21) and a spraying assembly, the bottom end of the metering pump (21) is fixedly connected to the top of the liquid storage tank (5), one end of the metering pump (21) is communicated with the spraying assembly through a conveying pipeline, and the other end of the metering pump (21) penetrates the top end of the liquid storage tank (5) and is communicated with a liquid suction pipe (28).

2. The municipal garden greening soil remediation device according to claim 1, characterized in that, The conveying pipeline of the pulse injection mechanism (2) comprises a hose (22) and a bellows (24), one end of the hose (22) is communicated with the metering pump (21), the other end is communicated with the spraying assembly through the bellows (24), and the outer wall of the hose (22) is fixedly connected with a check valve (23).

3. The municipal garden greening soil remediation device according to claim 2, characterized in that, The spraying assembly of the pulse injection mechanism (2) comprises a connecting block (25) and a spraying block (26), the top end of the connecting block (25) is communicated with the bellows (24), the bottom end is communicated with the spraying block (26), and the bottom end of the spraying block (26) is fixedly connected with a tapered block (27) and internally provided with a shunt assembly (29).

4. The municipal garden greening soil remediation device according to claim 3, characterized in that, The shunt assembly (29) comprises a cavity (291), the cavity (291) is formed in the inside of the spraying block (26), a plurality of communication holes (292) are formed in the outer wall of the spraying block (26), one end of the plurality of communication holes (292) is communicated with the inner wall of the cavity (291), and the other end extends to the outside of the spraying block (26), and the inner wall of the communication hole (292) is fixedly connected with a nozzle (293).

5. The municipal garden greening soil remediation device according to claim 1, characterized in that, The pneumatic impact mechanism (3) comprises an air compressor (31), a pressure balance tank (33) and a solenoid valve (35), the bottom end of the air compressor (31) is fixedly connected to the top front side of the crawler base (1), the air outlet end of the air compressor (31) is communicated with the air inlet end of the pressure balance tank (33) through an air pipe (32), the air outlet end of the pressure balance tank (33) is communicated with one end of a three-way pipe (36) through a communication pipe (34), the solenoid valve (35) is fixedly connected to the outer wall of the communication pipe (34), and the other end of the three-way pipe (36) is communicated in the middle part of the outer wall of the hose (22).

6. The municipal garden greening soil remediation device according to claim 1, characterized in that, The mixing stirring mechanism (4) comprises a DC motor (41), a permanent magnet rotor (44) and a conductor rotor (45), the bottom end of the DC motor (41) is fixedly connected to the top left side of the track base (1), the output end of the DC motor (41) is fixedly connected with a bevel gear (42), the outer wall of the bevel gear (42) is meshedly connected with a bevel gear (43), the bottom end of the permanent magnet rotor (44) is fixedly connected with the top end of the bevel gear (43), the bottom end of the liquid storage tank (5) is provided with a concave groove (48), the outer wall of the permanent magnet rotor (44) is clamped with the inner wall of the concave groove (48), the conductor rotor (45) is rotatably connected to the inner wall bottom end of the liquid storage tank (5), the outer wall is fixedly connected with a plurality of stirring blades (46), and the top end is fixedly connected with a plurality of mixing plates (47).

7. The municipal garden greening soil remediation device according to claim 1, characterized in that, The lifting assembly (7) comprises a hydraulic rod one (71), a hydraulic rod two (72) and an electric telescopic rod (74), the top right side of the track base (1) is provided with a limiting groove (75), one end of the hydraulic rod one (71) is rotatably connected to the inner wall of the limiting groove (75), the other end is rotatably connected with the left side of the U-shaped support (6), the bottom end of the hydraulic rod two (72) is fixedly connected to the inner wall bottom end of the U-shaped support (6), and the top end is fixedly connected with a sliding plate (73), the top end of the electric telescopic rod (74) is fixedly connected with the bottom end of the sliding plate (73), and the bottom end is fixedly connected with the top end of the connecting block (25).

8. The municipal garden greening soil remediation device according to claim 1, characterized in that, The top front and back sides of the track base (1) are fixedly connected with arc-shaped support plates (8), the outer wall bottom end of the liquid storage tank (5) is fixedly connected with the inner wall of the arc-shaped support plate (8), and the top of the liquid storage tank (5) is threadedly connected with a tank cover plate (9).

9. The municipal garden greening soil remediation device according to claim 5, characterized in that, The pulse injection mechanism (2) is linked with the air pressure impact mechanism (3) and the mixing stirring mechanism (4) through the PLC controller, the mixing stirring mechanism (4) is started first, the air pressure impact mechanism (3) is started after the mixing stirring mechanism (4) is started, the opening time of the electromagnetic valve (35) is 3-5 seconds, the metering pump (21) is started after the electromagnetic valve (35) is closed, and the PLC controller can adjust the pulse frequency of the metering pump (21) according to the running state of the mixing stirring mechanism (4).

10. The municipal garden greening soil remediation device according to claim 6, characterized in that, The track base (1) is provided with a soil compactness sensor, a medicament concentration detection unit is arranged in the middle of the inner wall of the liquid storage tank (5), the sensor and the detection unit are connected with the PLC controller, the PLC controller can adjust the compressed air output pressure of the air pressure impact mechanism (3) and the pulse frequency of the pulse injection mechanism (2) according to the detection result of the soil compactness sensor, and the medicament concentration detection unit can adjust the rotating speed of the DC motor (41) according to the detection result.

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