A garden irrigation and drainage pipe network excavation device

Abstract

The application provides a garden irrigation and drainage pipe network excavation device and relates to the technical field of garden water supply and drainage engineering. The device comprises a vehicle frame, two connecting plates and a spraying assembly. The inner wall of the connecting plate is movably connected with a supporting rod. A ditching assembly is arranged between the two supporting rods. The bottom end of the supporting rod is fixedly connected with a connecting rod. A compaction assembly is arranged between the two connecting rods. A near-infrared sensor for real-time monitoring of soil water content is installed on one side of the bottom end of the vehicle frame. The spraying assembly comprises two transmission pipes connected to the vehicle frame. The output end of one of the transmission pipes is connected with a first nozzle for spraying clean water. The output end of the other transmission pipe is connected with a second nozzle for spraying solidified material. A baffle is arranged between the first nozzle and the second nozzle. Through the combination of intelligent sensing and precise quantity control, integrated and automated construction of trench excavation, dust reduction, soil humidification and inner wall solidification is realized, and high-quality formation of the solidified protective layer is ensured.

Description

Technical Field

[0001] This invention relates to the field of garden water supply and drainage engineering technology, and in particular to a garden irrigation and drainage pipeline excavation device. Background Technology

[0002] Garden irrigation and drainage pipe networks belong to garden water supply and drainage engineering. They are systematic facilities responsible for water supply and sewage treatment in garden projects. They mainly meet the water needs of garden areas by allocating water sources, laying pipe networks, and treating water quality. Their water sources include surface water, groundwater, and municipal tap water. They are characterized by wide pipe network coverage and strong terrain adaptability. Natural spring water is given priority as the drinking water source. Therefore, in order to lay pipes or construct irrigation and drainage systems, it is usually necessary to use excavation equipment to dig trenches that meet the requirements efficiently and accurately on the ground. Compared with manual excavation, mechanical excavation is more efficient.

[0003] However, when excavating trenches in loose, dry soil conditions, the soil on the trench walls is prone to loosening or even collapse due to the soil conditions. Existing technologies usually increase the stability of the trench walls by compacting or spraying hardeners. However, for dry, loose soil, the compacted trench walls are still prone to loosening or collapse due to mechanical vibration or subsequent pipeline laying. Directly spraying hardeners can also cause the trench walls to collapse and slide due to mechanical vibration before the material has cured, leading to reinforcement failure. Summary of the Invention

[0004] The problem to be solved by the present invention is how to overcome the defects of the prior art in trenching in loose and dry soil, such as low construction efficiency and poor curing quality due to dust generation during excavation, easy collapse of trench walls, and difficulty in coordinating humidification and curing.

[0005] To address the aforementioned technical problems, this invention provides a garden irrigation and drainage pipeline excavation device, comprising a frame and two connecting plates fixedly connected to one side of its bottom end. A spraying assembly for solidifying the inner wall of a trench is provided on the other side of the bottom end of the frame. Support rods are movably connected to the inner wall of the connecting plates. A trenching assembly for excavation is provided between the two support rods. A connecting rod is fixedly connected to the bottom end of each support rod. A compaction assembly for compacting the soil on the inner wall of the trench is provided between the two connecting rods. A near-infrared sensor for real-time monitoring of soil moisture content is installed on the side of the bottom end of the frame near the spraying assembly. The spraying assembly includes two transmission pipes connected to the vehicle frame. The output end of one of the transmission pipes is connected to a first nozzle for spraying clean water, and the output end of the other transmission pipe is connected to a second nozzle for spraying a curing material. A baffle is provided between the first nozzle and the second nozzle.

[0006] Preferably, the first nozzle is located above the baffle, and the second nozzle is located below the baffle, with both the first and second nozzles being inclined.

[0007] Preferably, the top of the vehicle frame is equipped with a first liquid storage tank for storing clean water and a second liquid storage tank for storing solidified materials. The input end of the first nozzle is connected to the output end of the first liquid storage tank through one of the transmission pipes, and the input end of the second nozzle is connected to the output end of the second liquid storage tank through the other transmission pipe.

[0008] Preferably, a first adjusting cylinder for adjusting the groove depth is installed on the outer side of the connecting plate. The extended end of the first adjusting cylinder is fixedly connected to one side of the top of the support rod. A telescopic rod is fixedly connected to the end of the top of the connecting rod away from the connecting plate. The top of the telescopic rod is fixedly connected to the bottom of the frame.

[0009] Preferably, the trenching assembly includes a rotating shaft rotatably connected between two support rods, a disc fixedly connected to the surface of the rotating shaft, and adjustment grooves provided on both sides of the surface of the disc. A fixing ring is movably connected to the inner cavity of the adjustment groove, and several trenching tools for excavation are installed on the fixing ring by bolts.

[0010] Preferably, the bottom of the inner wall of the adjusting groove is provided with a groove, and a plurality of adjusting blocks are fixedly connected to the bottom of the fixing ring. The adjusting blocks are movably connected to the inner cavity of the groove and are fixed by bolts.

[0011] Preferably, the inner walls of the two support rods are jointly fixedly connected to a protective cover, a retaining plate is fixedly connected to one side of the bottom end of the protective cover, and the disc is located in the inner cavity of the protective cover.

[0012] Preferably, the compaction assembly includes a fixing frame fixedly connected to one end of two connecting rods, a connecting shaft fixedly connected to one side of the inner side of the fixing frame, two conical wheels sleeved on the surface of the connecting shaft, rollers fixedly connected to the outer side of the conical wheels, and a limit rod fixedly connected to one side of the surface of the rollers.

[0013] Preferably, a fixing rod is fixedly connected to the middle of the fixing frame, and a second adjusting cylinder is installed at both ends of the fixing rod. The extended end of the second adjusting cylinder is fixedly connected to the end of the limiting rod away from the roller.

[0014] The technical effects and advantages of this invention are as follows: 1. This invention addresses the problems of dust, trench wall collapse, and solidification layer failure during excavation in loose, dry soil conditions by incorporating a spraying assembly. The first nozzle sprays a fine water mist to increase the moisture and viscosity of the loose, dry soil, effectively stabilizing the inner wall of the trench and preventing collapse due to vibrations during device movement or before the solidification reaction is complete. It also reduces dust generated during excavation. A second nozzle then sprays a solidification material onto the inner wall of the trench, forming a controllable-thickness hardened layer that provides anti-collapse and load-bearing capabilities. This prevents the soil in trenches excavated in dry, loose soil conditions from becoming loose or even collapsing during subsequent drainage pipe network laying.

[0015] 2. This invention utilizes a near-infrared sensor to monitor the soil moisture content in the trenching area in real time without contact with the soil. The first nozzle uses the near-infrared sensor to detect the soil moisture content and control the amount of water sprayed, reducing the impact of excessive water mist on the curing material. This achieves automated and precise humidification, ensuring that the soil moisture content meets the temporary strength requirement for collapse resistance without damaging the curing reaction of the curing material. The soil moisture content is precisely controlled within a preset optimal range, preventing the soil from becoming too dry and loose, which could lead to loosening or collapse before the curing agent has cured. Simultaneously, a baffle is placed between the first and second nozzles as a physical barrier to prevent the water mist sprayed from the first nozzle from drifting onto the curing material sprayed by the second nozzle below, reducing the impact of water mist on the curing material. Through the combined use of intelligent sensing and precise control, integrated and automated construction of trench excavation, dust suppression, soil humidification, and inner wall curing is achieved, ensuring the high-quality formation of the cured protective layer.

[0016] 3. This invention features a trenching assembly with adjustable trench width and depth. Simultaneously, a first and second adjusting cylinder drive a compaction assembly to adjust the width and depth, making it suitable for different drainage pipe network laying requirements. This ensures the compaction assembly can more accurately compact the inner wall of the trench. The cutting tool's position within the adjustable groove cavity is adjusted by adjusting the fixing ring. The conical wheels' distance is adjusted by the second adjusting cylinder based on the width between the two cutting tools, ensuring the sidewalls of the conical wheels remain in close contact with the trench wall. As the device moves forward, the inclined surfaces of the conical wheels move along the trench wall, compacting and smoothing it, providing a foundation for subsequent trench wall solidification. Simultaneously, the rollers on both sides also compact and smooth the soil accumulated on both sides of the trench top, preventing excavated soil from falling into the trench during movement and affecting subsequent drainage pipe laying. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 This is a schematic diagram of the overall structure of the present invention from another perspective.

[0019] Figure 3 For the present invention Figure 2 Enlarged schematic diagram of the structure at point A in the middle.

[0020] Figure 4 This is a schematic diagram of the overall cross-sectional structure of the present invention.

[0021] Figure 5 This is a schematic diagram of the compaction component structure of the present invention.

[0022] Figure 6 This is a cross-sectional structural diagram of the entire invention from another perspective.

[0023] The attached figures are labeled as follows: 1. Frame; 2. Connecting plate; 3. Spraying assembly; 31. Transmission pipe; 32. First nozzle; 33. Second nozzle; 34. Baffle; 35. First liquid storage tank; 36. Second liquid storage tank; 4. Support rod; 5. Trenching assembly; 51. Rotating shaft; 52. Disc; 53. Adjusting groove; 54. Fixing ring; 55. Trenching cutter; 56. Groove; 57. Adjusting block; 58. Protective cover; 59. Retaining plate; 6. Connecting rod; 7. Compaction assembly; 71. Fixing frame; 72. Connecting shaft; 73. Conical wheel; 74. Roller; 75. Limiting rod; 76. Fixing rod; 77. Second adjusting cylinder; 8. Near-infrared sensor; 9. First adjusting cylinder; 10. Telescopic rod. Detailed Implementation

[0024] This invention provides a garden irrigation and drainage pipeline excavation device, such as... Figure 1 - Figure 6As shown, the device includes a frame 1 and two connecting plates 2 fixedly connected to one side of its bottom end. A spraying assembly 3 for solidifying the inner wall of the trench is installed on the other side of the bottom end of the frame 1. Support rods 4 are movably connected to the inner wall of the connecting plates 2. A trenching assembly 5 for excavation is installed between the two support rods 4. A connecting rod 6 is fixedly connected to the bottom end of the support rods 4. A compaction assembly 7 for compacting the soil inside the trench is installed between the two connecting rods 6. A near-infrared sensor 8 for real-time monitoring of soil moisture content is installed on the side of the bottom end of the frame 1 near the spraying assembly 3. The trenching assembly 5 is connected to... Before contacting the soil, the near-infrared sensor 8 monitors the soil moisture content in the trenching area in real time. The near-infrared sensor 8 calculates the moisture content by emitting near-infrared light into the soil and based on the absorption and reflection characteristics of soil moisture to specific wavelengths of light. The data is then transmitted to the control system to control the amount of water sprayed by the spraying component 3. At the same time, a splicing structure is provided at the end of the vehicle frame 1 away from the spraying component 3. The device is installed as a whole on a tractor or other drive equipment through the splicing structure. The tractor drives the excavation device to move to the designated position to realize the trenching operation in the garden irrigation area.

[0025] Furthermore, such as Figure 2 As shown, the spraying assembly 3 includes two transmission pipes 31 connected to the frame 1. The output end of one transmission pipe 31 is connected to a first nozzle 32 for spraying clean water, and the output end of the other transmission pipe 31 is connected to a second nozzle 33 for spraying curing material. A baffle 34 is provided between the first nozzle 32 and the second nozzle 33. The baffle 34 provides physical isolation between the upper humidification zone and the lower curing zone, preventing the water mist sprayed from the first nozzle 32 from drifting onto the curing material sprayed by the lower second nozzle 33, thereby reducing the impact of water mist on the curing material. The two transmission pipes 31 are respectively fixed to the frame 1 and the compaction assembly 7 by connecting fasteners to ensure the stability of the spraying assembly 3 during use.

[0026] Furthermore, such as Figure 2 and Figure 6As shown, the first nozzle 32 is located above the baffle 34, and the second nozzle 33 is located below the baffle 34. Both the first nozzle 32 and the second nozzle 33 are set at an angle. The first nozzle 32 is positioned further forward and at a higher position, maintaining a distance from the curing material spraying nozzle of the second nozzle 33, which is positioned further back and at a lower position. This allows time for the water sprayed by the first nozzle 32 to migrate and distribute evenly in the soil, preventing water mist from directly interfering with the curing layer and also preventing the sprayed curing material from spreading upward and affecting the surrounding environment. At the same time, the first nozzle 32 uses the near-infrared sensor 8 to detect the soil moisture content and control the amount of water sprayed, reducing the impact of excessive water mist on the curing material. This achieves automated and precise humidification, ensuring that the soil moisture content meets the temporary strength requirement for collapse resistance without damaging the curing reaction of the curing material. The soil moisture content is precisely controlled within the preset optimal range, preventing the soil from becoming too dry and loose, and avoiding loosening or collapse before the curing agent has cured.

[0027] Furthermore, such as Figure 2 As shown, the top of the vehicle frame 1 is equipped with a first liquid storage tank 35 for storing clean water and a second liquid storage tank 36 for storing solidifying material. The input end of the first nozzle 32 is connected to the output end of the first liquid storage tank 35 through one of the transmission pipes 31, and the input end of the second nozzle 33 is connected to the output end of the second liquid storage tank 36 through the other transmission pipe 31. Directly spraying solidifying material onto dry, loose soil can easily cause the trench walls to collapse and slip due to vibration before the material has solidified, leading to reinforcement failure. Therefore, after the trench is dug, water mist is first sprayed through the first nozzle 32 to increase the moisture and viscosity of the soil on the trench walls, effectively providing temporary reinforcement. The stabilization process prevents collapse before the curing reaction is complete, providing a stable reaction interface for the curing material. Simultaneously, the water mist sprayed from above reduces dust generated during trenching. During humidification, the water volume is controlled by real-time monitoring data from the near-infrared sensor 8. After humidification, curing materials (such as soil stabilizers, polymer mortar, etc.) are sprayed onto the inner wall of the trench through the second nozzle 33, forming a controllable thickness hardened layer on the inner wall of the trench. This provides anti-collapse and load-bearing functions, preventing the soil on the trench wall from becoming loose or even collapsing during the subsequent laying of drainage pipe networks in trenches excavated in dry, loose soil environments.

[0028] Furthermore, such as Figure 1 and Figure 2As shown, a first adjusting cylinder 9 for adjusting the trench depth is installed on the outer side of the connecting plate 2. The extended end of the first adjusting cylinder 9 is fixedly connected to one side of the top of the support rod 4. A telescopic rod 10 is fixedly connected to the end of the connecting rod 6 away from the connecting plate 2. The top of the telescopic rod 10 is fixedly connected to the bottom of the frame 1. The trench excavation depth is adjusted according to the laying requirements of the drainage pipe network. When adjusting, the first adjusting cylinder 9 is activated. Through the extension and retraction of the extended end of the first adjusting cylinder 9, the support rod 4 is driven to move up and down on the inner wall of the connecting plate 2. Since the compaction component 7 is connected to the trenching component 5 through the connecting rod 6, therefore... When the height of the trenching component 5 is adjusted, the compaction component 7 will be adjusted synchronously. During the up-and-down movement of the compaction component 7, the telescopic rod 10 will also extend and retract upwards, effectively improving the stability of the trenching component 5 and the compaction component 7 during their up-and-down movement. This ensures that the compaction component 7 can more accurately compact the inner wall of the trench. At the same time, the baffle 34 is fixedly connected to the compaction component 7, and the baffle 34 is movably connected to the surface of the transmission pipe 31 that connects to the second nozzle 33, so that the baffle 34 can move up and down with the compaction component 7, ensuring that the baffle 34 maintains the isolation range when the trenching component 5 and the compaction component 7 are at different heights.

[0029] Furthermore, such as Figure 2 - Figure 4 As shown, the trenching assembly 5 includes a rotating shaft 51 rotatably connected between two support rods 4. A disc 52 is fixedly connected to the surface of the rotating shaft 51. Adjustment grooves 53 are provided on both sides of the surface of the disc 52. A fixing ring 54 is movably connected to the inner cavity of the adjustment groove 53. Several trenching cutters 55 for excavation are installed on the fixing ring 54 by bolts. A motor for driving the disc 52 to rotate is installed at one end of the rotating shaft 51. Before excavation, the motor is started, and the rotating shaft 51 is driven by the motor to rotate the disc 52, so that the trenching cutters 55 connected to its surface can perform excavation operations at the designated position. At the same time, the distance between the trenching cutters 55 on both sides can be adjusted according to the laying requirements of the drainage pipe network to adjust the width of the trench.

[0030] Furthermore, such as Figure 3 As shown, a groove 56 is provided at the bottom of the inner wall of the adjusting groove 53. Several adjusting blocks 57 are fixedly connected to the bottom of the fixing ring 54. The adjusting blocks 57 are movably connected to the inner cavity of the groove 56 and fixed by bolts. When it is necessary to adjust the opening width of the groove, first adjust the position of the fixing ring 54 in the inner cavity of the adjusting groove 53. The adjusting blocks 57 at the bottom of the ring 54 move in the inner cavity of the groove 56 to ensure the accuracy of the direction of the moving ring 54. After the adjustment is completed, the adjusting blocks 57 are fixed in the inner cavity of the groove 56 with bolts to complete the adjustment of the distance between the trenching tools 55 on both sides.

[0031] Furthermore, such as Figure 2 and Figure 4As shown, the inner walls of the two support rods 4 are fixedly connected to a protective cover 58. A soil retaining plate 59 is fixedly connected to one side of the bottom end of the protective cover 58. The disc 52 is located in the inner cavity of the protective cover 58. During the high-speed rotation of the disc 52, the excavated soil will splash upwards. Therefore, the protective cover 58 prevents the soil from splashing everywhere, and the soil retaining plate 59 connected to its bottom end allows the excavated soil to be discharged upwards. When moving, the top of the trench is on both sides.

[0032] Furthermore, such as Figure 2 , Figure 5 and Figure 6 As shown, the compaction assembly 7 includes a fixed frame 71 fixedly connected to one end of two connecting rods 6. A connecting shaft 72 is fixedly connected to one side of the inner side of the fixed frame 71. Two conical wheels 73 are sleeved on the surface of the connecting shaft 72. Rollers 74 are fixedly connected to the outer side of the conical wheels 73. A limit rod 75 is fixedly connected to one side of the surface of the rollers 74. The two conical wheels 73 are located on both sides of the inner wall of the trench, and the rollers 74 are located on both sides of the top of the trench. As the device moves forward, the inclined surfaces of the conical wheels 73 move on the trench wall to compact and smooth the trench wall, providing a foundation for the subsequent solidification treatment of the trench wall. At the same time, the rollers 74 on both sides also compact and smooth the soil accumulated on both sides of the top of the trench as the device moves, preventing the soil excavated during the movement from falling into the trench and affecting the subsequent drainage pipe laying operation.

[0033] Furthermore, such as Figure 5 and Figure 6 As shown, a fixing rod 76 is fixedly connected to the middle of the fixing frame 71. A second adjusting cylinder 77 is installed at both ends of the fixing rod 76. The extended end of the second adjusting cylinder 77 is fixedly connected to the end of the limiting rod 75 away from the roller 74. According to the adjustment of the trenching width of the trenching component 5, the distance between the two conical wheels 73 is adjusted by the second adjusting cylinder 77 so that the width of the compaction component 7 can match the trenching width of the trenching component 5. When adjusting, the second adjusting cylinder 77 is activated. By extending and retracting the extended end of the second adjusting cylinder 77, the two fixing rods 76 are pushed to move left and right, so as to drive the conical wheels 73 and rollers 74 on both sides to move on the surface of the connecting shaft 72, ensuring that the side wall of the conical wheel 73 is always in contact with the trench wall, so as to realize the adjustment of the compaction width.

[0034] The working principle of this invention is as follows: First, the excavation device is mounted on a tractor via a splicing structure installed at one end of the frame 1. The tractor provides driving force to enable the excavation device to move and dig trenches. Before starting, the first liquid storage tank 35 is filled with clean water, and the second liquid storage tank 36 is filled with a solidifying material (such as soil stabilizer, polymer mortar, etc.). After filling, the width and height of the trenching component 5 and the compaction component 7 are adjusted according to the specific requirements of pipeline laying. When adjusting the width, the position of the fixing ring 54 in the adjusting groove 53 is adjusted first, and the adjusting block 57 at its bottom moves in the groove 56. After adjustment, the adjusting block 57 is fixed in the groove 56 with bolts, thus adjusting the distance between the trenching cutters 55 on both sides. The width is adjusted according to the trenching cutters 55. To adjust the distance between the two conical wheels 73, the second adjusting cylinder 77 is activated. The extension and retraction of the second adjusting cylinder 77 pushes the two fixed rods 76 to move left and right, thereby moving the conical wheels 73 and rollers 74 on the surface of the connecting shaft 72. This ensures that the sidewalls of the conical wheels 73 are always in contact with the trench wall, thus adjusting the compaction width. To adjust the trenching depth, the first adjusting cylinder 9 and the second adjusting cylinder 77 are activated, raising the height of the trenching assembly 5 and the compaction assembly 7 to adjust the trenching depth. Before the trenching assembly 5 contacts the soil, the moisture content of the soil in the trenching area is monitored in real time by the near-infrared sensor 8. After adjustment, the tractor and motor are started, and the tractor drives the device forward to perform the trenching operation. Simultaneously, the motor drives the rotating shaft 51 to move the disc 52. The high-speed rotation causes the trenching cutter 55 connected to its surface to excavate at the designated location, while the two conical wheels 73 are located inside the trench. As the device moves forward, the inclined surfaces of the conical wheels 73 move on the trench wall, compacting and smoothing it, providing a foundation for subsequent solidification treatment. Simultaneously, the rollers 74 on both sides also compact and smooth the soil accumulated on both sides of the trench top. After the trench is opened, water mist is first sprayed through the first nozzle 32 to increase the moisture and viscosity of the soil on the trench wall, providing effective temporary stabilization and preventing collapse before the solidification reaction is complete. This provides a stable reaction interface for the solidification material. Meanwhile, water is sprayed from a height... The mist reduces dust generated during trenching. During humidification, the water spray volume is controlled by real-time monitoring data from the near-infrared sensor 8. After humidification, a solidifying material (such as soil stabilizer, polymer mortar, etc.) is sprayed onto the inner wall of the trench through the second nozzle 33, forming a hardened layer of controllable thickness on the inner wall of the trench. This provides anti-collapse and load-bearing functions, preventing the soil on the trench wall from becoming loose or even collapsing during the subsequent laying of drainage pipes in dry and loose soil environments. Through the combined use of intelligent sensing and precise volume control, the integrated and automated construction of trench excavation, dust reduction, soil humidification and inner wall solidification is achieved, ensuring the high-quality formation of the solidified protective layer.

[0035] It is understood that the present invention has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of the invention. Furthermore, under the teachings of the present invention, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of the present invention.

Claims

1. A garden irrigation and drainage pipeline excavation device, comprising a frame (1) and two connecting plates (2) fixedly connected to one side of its bottom end, characterized in that: A spraying assembly (3) for solidifying the inner wall of the trench is provided on the other side of the bottom end of the vehicle frame (1). A support rod (4) is movably connected to the inner wall of the connecting plate (2). A trenching assembly (5) for excavation is provided between the two support rods (4). A connecting rod (6) is fixedly connected to the bottom end of the support rod (4). A compaction assembly (7) for compacting the soil on the inner wall of the trench is provided between the two connecting rods (6). A near-infrared sensor (8) for real-time monitoring of soil moisture content is installed on the side of the bottom end of the vehicle frame (1) near the spraying assembly (3). The spraying assembly (3) includes two transmission pipes (31) connected to the frame (1), one of the transmission pipes (31) is connected to a first nozzle (32) for spraying clean water, and the other transmission pipe (31) is connected to a second nozzle (33) for spraying solidifying material. A baffle (34) is provided between the first nozzle (32) and the second nozzle (33).

2. The garden irrigation and drainage pipeline excavation device according to claim 1, characterized in that: The first nozzle (32) is located above the baffle (34), and the second nozzle (33) is located below the baffle (34). Both the first nozzle (32) and the second nozzle (33) are set to be inclined.

3. The garden irrigation and drainage pipeline excavation device according to claim 1, characterized in that: The top of the frame (1) is equipped with a first liquid storage tank (35) for storing clean water and a second liquid storage tank (36) for storing solidified materials. The input end of the first nozzle (32) is connected to the output end of the first liquid storage tank (35) through one of the transmission pipes (31), and the input end of the second nozzle (33) is connected to the output end of the second liquid storage tank (36) through another transmission pipe (31).

4. The garden irrigation and drainage pipeline excavation device according to claim 1, characterized in that: The outer side of the connecting plate (2) is equipped with a first adjusting cylinder (9) for adjusting the groove depth. The extended end of the first adjusting cylinder (9) is fixedly connected to one side of the top of the support rod (4). The end of the top of the connecting rod (6) away from the connecting plate (2) is fixedly connected to a telescopic rod (10). The top of the telescopic rod (10) is fixedly connected to the bottom of the frame (1).

5. The garden irrigation and drainage pipeline excavation device according to claim 1, characterized in that: The trenching assembly (5) includes a rotating shaft (51) rotatably connected between two support rods (4). A disc (52) is fixedly connected to the surface of the rotating shaft (51). Adjustment grooves (53) are provided on both sides of the surface of the disc (52). A fixing ring (54) is movably connected to the inner cavity of the adjustment groove (53). Several trenching tools (55) for excavation are installed on the fixing ring (54) by bolts.

6. The garden irrigation and drainage pipeline excavation device according to claim 5, characterized in that: The bottom of the inner wall of the adjusting groove (53) is provided with a groove (56), and a number of adjusting blocks (57) are fixedly connected to the bottom of the fixing ring (54). The adjusting blocks (57) are movably connected to the inner cavity of the groove (56) and are fixed by bolts.

7. The garden irrigation and drainage pipeline excavation device according to claim 5, characterized in that: The inner walls of the two support rods (4) are fixedly connected to a protective cover (58), and a retaining plate (59) is fixedly connected to one side of the bottom end of the protective cover (58). The disc (52) is located in the inner cavity of the protective cover (58).

8. The garden irrigation and drainage pipeline excavation device according to claim 1, characterized in that: The compaction assembly (7) includes a fixed frame (71) fixedly connected to one end of two connecting rods (6). A connecting shaft (72) is fixedly connected to one side of the inner side of the fixed frame (71). Two conical wheels (73) are sleeved on the surface of the connecting shaft (72). A roller (74) is fixedly connected to the outer side of the conical wheels (73). A limit rod (75) is fixedly connected to one side of the surface of the roller (74). A garden irrigation and drainage pipeline excavation device according to claim 8, characterized in that: A fixing rod (76) is fixedly connected to the middle of the fixing frame (71). A second adjusting cylinder (77) is installed at both ends of the fixing rod (76). The extended end of the second adjusting cylinder (77) is fixedly connected to the end of the limiting rod (75) away from the roller (74).

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