A jet for a milling cutter of a sewerage cleaning vehicle which can clear concrete and tree roots

Abstract

The application relates to a mill cutter nozzle of a dredging vehicle capable of cleaning concrete and tree roots, which comprises a whole-supporting frame body, one end of the frame body is provided with a connecting assembly for being connected with a hose, the other end of the frame body is provided with a torque rotator for whole rotation, the torque rotator is provided with a crushing assembly for crushing branches and concrete and a flushing assembly for flushing the inner wall of a pipeline. The application realizes integrated operation of crushing and flushing by simultaneously integrating the crushing assembly (for hard blockages such as branches, tree roots and concrete) and the flushing assembly (for residual dirt and debris on the inner wall of the pipeline), the flushing assembly timely flushes the inner wall of the pipeline after crushing, and can reduce corrosion or wear of the pipeline caused by blockage residues; meanwhile, the crushing process can avoid excessive damage to the inner wall of the pipeline (compared with brute force dredging) by precise rotary cutting, and indirectly prolongs the service life of the pipeline.

Description

Technical Field

[0001] This application relates to the field of pipe dredging and maintenance technology, and in particular to a dredging milling cutter nozzle that can clean concrete and tree roots. Background Technology

[0002] With the acceleration of urbanization, underground pipeline systems are becoming increasingly complex, leading to frequent pipe blockages, especially hard blockages such as tree roots and concrete accumulations. Traditional dredging techniques often employ single mechanical crushing or high-pressure water jetting, but these methods suffer from low efficiency and the risk of damaging pipelines. In recent years, multi-functional dredging equipment has gradually become a research hotspot, aiming to improve dredging efficiency and reduce the risk of pipeline damage by integrating multiple functional modules.

[0003] Common methods currently include: ① purely mechanical unblocking drills, which rely on rotational cutting force to break up blockages, but cause significant friction to the inner wall of the pipe; ② high-pressure water jet nozzles, which can wash away dirt but cannot handle hard solids; ③ step-by-step operation equipment, which first mechanically breaks up the blockage and then manually washes it, resulting in low efficiency and high cost. Among these, mechanical drills are prone to scratching pipes, high-pressure water jets are ineffective against tree roots, and step-by-step operations are time-consuming and labor-intensive.

[0004] Regarding the aforementioned technologies, existing technologies cannot simultaneously crush hard blockages and clean pipes. The split design results in a lengthy operation process, and the direct contact between mechanical parts and pipes accelerates pipe wall wear. Summary of the Invention

[0005] To address the issues that existing technologies cannot simultaneously crush hard blockages and clean pipes, that the split design leads to lengthy processes, and that direct contact between mechanical parts and pipes accelerates pipe wall wear, this application provides a dredging milling cutter nozzle that can clean concrete and tree roots.

[0006] This application provides a cleaning milling cutter nozzle for cleaning concrete and tree roots, employing the following technical solution: A dredging milling cutter nozzle capable of cleaning concrete and tree roots includes an integrally supported frame. One end of the frame is provided with a connecting assembly for connecting to a hose, and the other end of the frame is provided with a torque rotator for overall rotation. The torque rotator is provided with a crushing assembly for crushing branches and concrete and a flushing assembly for flushing the inner wall of the pipe.

[0007] By adopting the above technical solution, the solution integrates a crushing component (for hard blockages such as branches, roots, and concrete) and a flushing component (for residual dirt and debris on the inner wall of the pipe), realizing an integrated operation of "crushing + flushing". The flushing component flushes the inner wall of the pipe in time after crushing, which can reduce the corrosion or wear of the pipe caused by the blockage residue; at the same time, the crushing process avoids excessive damage to the inner wall of the pipe through precise rotational cutting (compared to brute force unblocking), indirectly extending the service life of the pipe.

[0008] Preferably, the rinsing assembly includes a connecting pipe, a first high-pressure nozzle, and a second high-pressure nozzle. One end of the connecting pipe is connected to a torque rotator, the first high-pressure nozzle is connected to the other end of the connecting pipe, and the second high-pressure nozzle is disposed on the surface of the connecting pipe.

[0009] By adopting the above technical solution, the direct water flow from the first high-pressure nozzle can concentrate the impact force to quickly disperse large pieces of debris and push them downstream of the pipe; the lateral water flow from the second high-pressure nozzle uses dispersed pressure to specifically flush away the fine dirt attached to the pipe wall, achieving a layered operation of "dispersing large pieces first and then cleaning the attached parts", avoiding the problem of a single water flow being "inadequate" (strong direct force but insufficient coverage, weak lateral force but wide range), and improving the overall cleaning efficiency.

[0010] Preferably, the first high-pressure nozzle is conical in shape, and the first high-pressure nozzle is detachably connected to the connecting pipe.

[0011] By adopting the above technical solution, the water outlet section of the cone-shaped nozzle gradually decreases, which can concentrate the high-pressure water flow into a more concentrated jet, increase the impact force on the blockage in front, quickly break up the remaining hard small pieces, and push the debris forward more efficiently to avoid accumulation in the working area. The detachable design allows the first high-pressure nozzle to be compatible with different models of connecting pipes. If the connecting pipe or nozzle is upgraded or damaged, it is not necessary to replace the entire flushing assembly, only the nozzle needs to be replaced, thus improving the versatility of the equipment.

[0012] Preferably, the surface of the connecting pipe is provided with a chain for moving branches to prevent blockage, and the chain is disposed between the first high-pressure nozzle and the second high-pressure nozzle.

[0013] By adopting the above technical solution, when the chain rotates synchronously with the torque rotator, it will generate a continuous mechanical actuation effect, which can sweep off the debris attached to the surface of the connecting pipe and break up the debris accumulated between the nozzles, preventing them from forming "clumps" or "jamming", thus reducing the risk of blockage from the source.

[0014] Preferably, the crushing assembly includes a connecting cylinder and a milling cutter for crushing branches and concrete. One end of the connecting cylinder is connected to a torque rotator, and the connecting cylinder is sleeved on the frame and rotatably connected to the frame.

[0015] By adopting the above technical solution, the connecting cylinder is sleeved on the frame, and the frame, as a fixed support structure, can provide a stable rotation guide for the connecting cylinder, ensuring the concentricity of the milling cutter when rotating at high speed, avoiding the dispersion of cutting force or the aggravation of local wear caused by shaking, and improving the stability and uniformity of the crushing operation. The structural design of the crushing component achieves a balance between efficient power transmission, compact structure and operational safety through "nested rotary transmission", while also taking into account the convenience of maintenance and functional expandability, further enhancing the equipment's ability to crush hard blockages in complex pipeline environments.

[0016] Preferably, the milling cutter includes two clamping plates, bolts, nuts, and milling cutters. The milling cutters are mounted between the two clamping plates by bolts and nuts, and the clamping plates are connected to the connecting cylinder.

[0017] By adopting the above technical solution, the milling cutter is clamped between two clamping plates, and the axial tightening force of the bolts and nuts forms a "clamping fixation". This not only avoids the radial sway that may occur with a single bolt connection, but also disperses the impact force during milling. This ensures that the milling cutter is not easily loosened or deviated when it is rotating at high speed to crush tree roots and concrete. At the same time, the design of the milling cutter, through the combination of "clamping plate clamping + bolt fastening", maximizes the flexibility of cutter replacement and the convenience of maintenance while ensuring the stability of milling operation. It can adapt to diverse blockage treatment needs and effectively control the operating cost of the equipment. This is a further optimization of the function of the crushing component.

[0018] Preferably, the connection assembly includes a threaded knob and a rotating tube for connecting to a hose, one end of the rotating tube being connected to the frame and the other end of the rotating tube being rotatably connected to the threaded knob.

[0019] By adopting the above technical solution, the threaded knob can be quickly screwed into the high-pressure hose of the dredging truck (usually with matching internal threads). Compared with snap-fit ​​and flange connections, it is easier to operate and can be tightened manually without additional tools. It is especially suitable for scenarios where frequent docking or disassembly is required in pipe dredging operations. At the same time, the tightness of the threaded fit can effectively prevent high-pressure water from leaking at the connection, ensuring that the water energy is concentrated and transferred to the flushing and crushing components, avoiding the impact of pressure loss on work efficiency.

[0020] In summary, this application includes at least one of the following beneficial technical effects: 1. The solution integrates a pulverizing component (for hard blockages such as branches, roots, and concrete) and a flushing component (for residual dirt and debris on the inner wall of the pipe), achieving an integrated "pulverizing + flushing" operation. The flushing component promptly flushes the inner wall of the pipe after pulverizing, reducing the corrosion or wear of the pipe caused by residual blockages. At the same time, the pulverizing process, through precise rotary cutting, avoids excessive damage to the inner wall of the pipe (compared to brute force unblocking), indirectly extending the service life of the pipe. 2. When the chain rotates synchronously with the torque rotator, it will generate a continuous mechanical actuation, which can sweep off the debris attached to the surface of the connecting pipe and break up the debris accumulated between the nozzles, preventing them from forming "clumps" or "jamming", thus reducing the risk of blockage from the source. 3. The connecting cylinder is mounted on the frame, which serves as a fixed support structure. This provides a stable rotational guide for the connecting cylinder, ensuring the concentricity of the milling cutter during high-speed rotation. This prevents the dispersion of cutting force or increased local wear caused by shaking, thus improving the stability and uniformity of the crushing operation. The structural design of the crushing component achieves a balance between efficient power transmission, compact structure, and operational safety through "nested rotary transmission." It also takes into account ease of maintenance and functional expandability, further enhancing the equipment's ability to crush hard blockages in complex pipeline environments. Attached Figure Description

[0021] Figure 1 This is a front-view perspective view of the nozzle for unclogging milling cutters; Figure 2 This is a right-side 3D view of the nozzle of a milling cutter used for unclogging. Figure 3 This is a front view of the nozzle used for unclogging milling cutters; Figure 4 This is a 3D view of the connecting components for unclogging milling cutter nozzles; Figure 5 This is a right view of the nozzle of a milling cutter.

[0022] Reference numerals: 100, frame; 200, connecting assembly; 210, threaded knob; 220, rotating tube; 300, torque rotator; 400, crushing assembly; 410, connecting cylinder; 420, milling cutter; 421, clamping plate; 422, bolt; 423, nut; 424, milling cutter; 500, flushing assembly; 510, connecting tube; 520, first high-pressure nozzle; 530, second high-pressure nozzle; 540, chain. Detailed Implementation

[0023] The following is in conjunction with the appendix Figure 1 - Appendix Figure 5 This application will be described in further detail.

[0024] This application discloses a dredging milling cutter nozzle that can clean concrete and tree roots.

[0025] Reference Figure 1 A drain cleaning machine milling nozzle for cleaning concrete and tree roots includes an integrally supported frame 100, a connecting assembly 200 for connection to a hose, a torque rotator 300 for overall rotation, a pulverizing assembly 400 for crushing branches and concrete, and a flushing assembly 500 for flushing the inner wall of a pipe. The torque rotator 300 is mounted on the frame 100, the connecting assembly 200 is mounted on the end of the frame 100 away from the torque rotator 300, the flushing assembly 500 is mounted on the end of the torque rotator 300 away from the frame 100, and the pulverizing assembly 400 is mounted on... On the surface of the frame 100, and connected to the other end of the torque rotator 300, by simultaneously integrating the crushing component 400 (for hard blockages such as branches, roots, and concrete) and the flushing component 500 (for residual dirt and debris on the inner wall of the pipe), an integrated "crushing + flushing" operation is achieved. The flushing component 500 flushes the inner wall of the pipe in time after crushing, which can reduce the corrosion or wear of the pipe caused by the blockage residue. At the same time, the crushing process avoids excessive damage to the inner wall of the pipe through precise rotational cutting (compared to brute force unblocking), indirectly extending the service life of the pipe.

[0026] refer to Figure 2 and Figure 3 The flushing assembly 500 includes a connecting pipe 510, a first high-pressure nozzle 520, and a second high-pressure nozzle 530. One end of the connecting pipe 510 is fixedly connected to the output end of the torque rotator 300, and the other end of the connecting pipe 510 is fixedly connected to the first high-pressure nozzle 520. The second high-pressure nozzle 530 is fixedly connected to the surface of the connecting pipe 510, and there are several second high-pressure nozzles 530 evenly distributed on the surface of the connecting pipe 510. The first high-pressure nozzle 520 mainly performs directional flushing on the pipe area in front of the connecting pipe 510, forming a "forward direct" water flow to ensure cleanliness deep within the pipe's extension direction. The second high-pressure nozzle 530 can be directed towards the side or obliquely downward of the connecting pipe 510 to flush the circumferential area of ​​the pipe's inner wall, forming a "lateral spray." The water flow is divided into two parts: the first high-pressure nozzle 520, whose direct water jet can concentrate the impact force to quickly disperse large pieces of debris and push them downstream in the pipe; and the second high-pressure nozzle 530, whose lateral water jet uses dispersed pressure to specifically flush away the fine dirt attached to the pipe wall, thus achieving a layered operation of "dispersing large pieces first and then cleaning the attached parts". This avoids the problem of a single water jet being "ineffective" (strong direct force but insufficient coverage, weak lateral force but wide range) and improves the overall cleaning efficiency.

[0027] refer to Figure 2 and Figure 3The first high-pressure nozzle 520 is conical in shape and is detachably connected to the connecting pipe 510 via threads. The tapered nozzle's gradually narrowing outlet section concentrates the high-pressure water flow into a more focused jet, enhancing the impact on obstructions and quickly breaking up small, hard fragments. It also efficiently pushes debris forward, preventing accumulation in the work area. The detachable design allows the first high-pressure nozzle 520 to be compatible with different models of connecting pipes 510. If the connecting pipe 510 or nozzle requires an upgrade or is damaged, only the nozzle needs to be replaced, eliminating the need to replace the entire flushing assembly 500 and improving the equipment's versatility.

[0028] refer to Figure 2 and Figure 3 The surface of the connecting pipe 510 is provided with a chain 540 for dislodging branches to prevent clogging. The chain 540 is installed between the first high-pressure nozzle 520 and the second high-pressure nozzle 530. When the chain 540 rotates synchronously with the torque rotator 300, it will generate a continuous mechanical dislodging effect, which can sweep off the debris attached to the surface of the connecting pipe 510 and break up the debris accumulated between the nozzles, so as to prevent them from forming "clumps" or "jamming" and reduce the risk of clogging from the source.

[0029] refer to Figure 2 and Figure 3 The crushing assembly 400 includes a connecting cylinder 410 and a milling cutter 420 for crushing branches and concrete. The connecting cylinder 410 is sleeved on the frame 100 and rotatably connected to the frame 100. The end of the connecting cylinder 410 near the torque rotator 300 is connected to the torque rotator 300. The milling cutter 420 is detachably connected to the connecting cylinder 410. By sleeved on the frame 100, the frame 100, as a fixed support structure, provides a stable rotational guide for the connecting cylinder 410, ensuring the concentricity of the milling cutter 420 during high-speed rotation. This avoids the dispersion of cutting force or the aggravation of local wear caused by shaking, and improves the stability and uniformity of the crushing operation. The structural design of the crushing assembly 400 achieves a balance between efficient power transmission, compact structure, and operational safety through "nested rotary transmission," while also taking into account maintenance convenience and functional expandability, further enhancing the equipment's ability to crush hard blockages in complex pipeline environments.

[0030] The milling cutter component 420 includes two clamping plates 421, bolts 422, nuts 423, and milling cutter inserts 424. The milling cutter inserts 424 are mounted between the two clamping plates 421 by bolts 422 and nuts 423. The clamping plates 421 are connected to the connecting cylinder 410 by bolts 422 and nuts 423. The milling cutter inserts 424 are clamped between the two clamping plates 421, and the axial tightening force of the bolts 422 and nuts 423 forms a "clamping fixation". This avoids the radial shaking that may occur with a single bolt 422 connection and disperses the impact force during milling. This ensures that the milling cutter inserts 424 are not easy to loosen or shift when pulverizing tree roots and concrete at high speed. At the same time, the design of the milling cutter component 420, through the combination structure of "clamping by clamping plates 421 + tightening by bolts 422", maximizes the flexibility of insert replacement and the convenience of maintenance while ensuring the stability of milling operation. It can adapt to diverse blockage treatment needs and effectively control the operating cost of the equipment. This is a further optimization of the function of the pulverizing component 400.

[0031] refer to Figure 4 and Figure 5 The connecting assembly 200 includes a threaded knob 210 and a rotating tube 220 for connecting to a hose. One end of the rotating tube 220 is rotatably connected to the frame 100, and the other end is rotatably connected to the threaded knob 210. The threaded knob 210 is fixed to the hose by means of threads. The threaded knob 210 can be quickly screwed into the high-pressure hose of the dredging vehicle. Compared with snap-fit ​​and flange connections, it is easier to operate and can be tightened manually without additional tools. It is especially suitable for scenarios where frequent docking or disassembly is required in pipe dredging operations. At the same time, the tightness of the threaded fit can effectively prevent high-pressure water from leaking at the connection, ensuring that the water energy is concentrated and transferred to the flushing assembly 500 and the pulverizing assembly 400, avoiding the impact on work efficiency due to pressure loss.

[0032] The implementation principle of this application embodiment is as follows: In implementation, after connecting the high-pressure hose through the threaded knob 210 on the connecting component 200, the equipment is placed into the pipeline, allowing the equipment to reach the blocked part. The first high-pressure nozzle 520 is activated, and the high-pressure water sprayed from the first high-pressure nozzle 520 flushes the blocked part. At the same time, the torque rotator 300 is activated, which drives the first high-pressure nozzle 520, the second high-pressure nozzle 530, and the milling cutter 420 to rotate, allowing the equipment to slowly enter the blocked part. The milling cutter 420 crushes the branches or concrete at the blocked part, and the second high-pressure nozzle 530 flushes the inner wall of the pipeline, allowing the crushed branches and concrete to flow out with the liquid, reducing the blockage of the pipeline, thereby pulling and clearing the pipeline, reducing damage to the pipeline, and extending the service life of the pipeline.

[0033] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A dredging milling cutter nozzle for cleaning concrete and tree roots, comprising an integrally supported frame (100), characterized in that, One end of the frame (100) is provided with a connecting assembly (200) for connecting to a hose, and the other end of the frame (100) is provided with a torque rotator (300) for overall rotation. The torque rotator (300) is provided with a crushing assembly (400) for crushing branches and concrete and a flushing assembly (500) for flushing the inner wall of the pipe.

2. The dredging milling cutter nozzle for cleaning concrete and tree roots according to claim 1, characterized in that, The flushing assembly (500) includes a connecting pipe (510), a first high-pressure nozzle (520), and a second high-pressure nozzle (530). One end of the connecting pipe (510) is connected to a torque rotator (300), the first high-pressure nozzle (520) is connected to the other end of the connecting pipe (510), and the second high-pressure nozzle (530) is disposed on the surface of the connecting pipe (510).

3. The dredging milling cutter nozzle for cleaning concrete and tree roots according to claim 2, characterized in that, The first high-pressure nozzle (520) is conical in shape and is detachably connected to the connecting pipe (510).

4. The dredging milling cutter nozzle for cleaning concrete and tree roots according to claim 2, characterized in that, The surface of the connecting pipe (510) is provided with a chain (540) for moving branches to prevent blockage, and the chain (540) is located between the first high-pressure nozzle (520) and the second high-pressure nozzle (530).

5. The dredging milling cutter nozzle for cleaning concrete and tree roots according to claim 1, characterized in that, The crushing assembly (400) includes a connecting cylinder (410) and a milling cutter (420) for crushing branches and concrete. One end of the connecting cylinder (410) is connected to a torque rotator (300). The connecting cylinder (410) is sleeved on the frame (100) and rotatably connected to the frame (100).

6. The dredging milling cutter nozzle for cleaning concrete and tree roots according to claim 5, characterized in that, The milling cutter (420) includes two clamping plates (421), bolts (422), nuts (423) and milling cutter (424). The milling cutter (424) is installed between the two clamping plates (421) by bolts (422) and nuts (423). The clamping plates (421) are connected to the connecting cylinder (410).

7. The dredging milling cutter nozzle for cleaning concrete and tree roots according to claim 1, characterized in that, The connection assembly (200) includes a threaded knob (210) for connection with a hose and a rotating tube (220), one end of which is connected to the frame (100) and the other end of which is rotatably connected to the threaded knob (210).

Images