Integrated sewage treatment station sludge discharge device

Abstract

The application discloses a sludge discharging device of an integrated sewage treatment station, which comprises a main frame, a walking mechanism for moving the sludge discharging device is installed at the bottom of the main frame, and a power supply and hydraulic system and a control system are integrated in the main frame. The quick-change connecting mechanism is used to realize quick and automatic switching of the reamer, the high-pressure water jet composite head and the special breaking head; the same equipment can efficiently treat the hardened sludge and the general scale through the synergistic effect of the reamer assembly and the high-pressure water jet assembly; and the special breaking head can break the hard scale such as cement hardening or mineral crystallization through the breaking roller and the vibrating impact hammer in a shearing and impacting combined mode; compared with the existing equipment with single function, the application can be used for multiple purposes, perfectly adapts to the complex and changeable sediment working conditions in the sewage treatment station, different equipment does not need to be frequently called, and the universality and flexibility of the dredging operation are remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, and in particular to an integrated wastewater treatment plant sludge discharge device. Background Technology

[0002] With the acceleration of industrialization and urbanization in my country, water pollution has become increasingly prominent, placing higher demands on water environment management. Wastewater treatment plants, as a key link in water pollution control, are crucial for their operational efficiency and stability. During wastewater treatment, a large amount of sludge is generated. If this sludge is not discharged in a timely and effective manner, it will not only occupy tank space and affect treatment efficiency, but also lead to sludge putrefaction, producing foul odors and causing secondary pollution.

[0003] In the actual operation of wastewater treatment plants, sedimentation tanks and equalization tanks are the two typical locations where sludge accumulation is most frequent and the operating conditions are most complex. Sedimentation tanks, which are used for long-term sludge-water separation, can easily accumulate activated sludge or chemical sludge at the bottom if not discharged promptly, leading to compaction and the formation of a solidified sludge layer. Equalization tanks, used to balance water quality and quantity, allow sediment, suspended solids, and organic matter carried by the incoming water to settle. Due to the low flow disturbance and long retention time, the sediment often has a complex composition, ranging from viscous sludge to hardened scale due to mineral crystallization or cement seepage. The significant differences in sediment properties between these two types of tanks present a serious challenge to sludge removal.

[0004] Traditional wastewater treatment plant dredging methods mainly rely on manual labor or simple machinery. Manual dredging is inefficient, labor-intensive, and operates in harsh environments, posing safety hazards. Existing dredging machinery, such as simple sludge suction trucks or small excavators, often has limited functionality and cannot simultaneously adapt to the different sediment conditions in sedimentation tanks and equalization tanks. For example, for hardened sludge in sedimentation tanks, a cutting and flushing head is needed; while for hardened cement or mineral crystals in equalization tanks, stronger crushing and impact capabilities are required. Existing equipment either cannot effectively crush hard scale or cannot efficiently remove sludge and debris after crushing, resulting in incomplete dredging and rapid re-caking of residues, significantly shortening the dredging cycle. Furthermore, wastewater treatment plants have complex internal structures and limited space, and often require operations without completely emptying the tanks, further demanding that dredging equipment possess excellent mobility, adaptability, and versatility. Summary of the Invention

[0005] To overcome the technical defects of existing technologies, this invention provides an integrated sludge discharge device for sewage treatment plants.

[0006] The technical solution adopted in this invention is: an integrated sludge removal device for a wastewater treatment plant, comprising a main frame, a walking mechanism for moving the sludge removal device installed at the bottom of the main frame, and an integrated power supply, hydraulic system, and control system inside the main frame; a multi-functional working head assembly is connected to the front end of the main frame via a quick-change connection mechanism; the multi-functional working head assembly includes a reamer and high-pressure water jet composite head and a dedicated crushing head; the quick-change connection mechanism includes a hydraulic locking module and a fluid quick connector, the hydraulic locking module being used to quickly lock the reamer and high-pressure water jet composite head or the dedicated crushing head to the main frame. The quick-connect fluid coupling is used to quickly connect or disconnect the high-pressure water circuit and the hydraulic oil circuit; the sludge discharge device also includes a cooperative suction mechanism, which includes a suction bucket mounted on the multi-functional working head assembly and an externally mounted processing device. The inlet of the suction bucket faces the working area, and a sludge discharge pipe is connected between the processing device and the suction bucket. A submersible pump is fixedly installed on the suction bucket or along the path of the sludge discharge pipe, and the submersible pump is used to generate negative pressure in the sludge discharge pipe; the control system is electrically connected to the walking mechanism, the multi-functional working head assembly, the quick-connect coupling mechanism, the cooperative suction mechanism, and the power supply and hydraulic system.

[0007] Preferably, the reamer and high-pressure water jet composite head includes a reamer assembly driven to rotate by a hydraulic motor. The reamer assembly is installed at the front of the reamer and high-pressure water jet composite head and is used to break up plated sludge and general scale. The hydraulic motor is connected to the power supply and hydraulic system through hydraulic pipelines. The main frame and the reamer and high-pressure water jet composite head are provided with a high-pressure water jet assembly for assisting in softening or dispersing scale. The high-pressure water jet assembly includes a high-pressure water pump installed inside the main frame, and the housing of the reamer and high-pressure water jet composite head is connected to the hydraulic cylinder. The device is equipped with a sludge removal disc. The oil inlet and outlet of the hydraulic cylinder are connected to the hydraulic valve group of the power supply and hydraulic system through hydraulic pipelines. Multiple high-pressure nozzles are fixedly installed on the sludge removal disc. The spray direction of the high-pressure nozzles is adjusted by driving the sludge removal disc to swing through the hydraulic cylinder. The water inlet of the high-pressure water pump is connected to an external water source or a clear liquid intake port at the top of the pool through a pipeline. The water outlet of the high-pressure water pump is connected to the high-pressure nozzles through a high-pressure pipeline. The rear of the reamer and high-pressure water jet composite head is provided with a sludge suction port adjacent to the reamer assembly. The rear end of the sludge suction port is connected to the inside of the suction bucket of the cooperative suction mechanism.

[0008] Preferably, the special crushing head includes a crushing roller driven to rotate by a hydraulic motor and a vibratory impact hammer driven to rotate by a hydraulic motor to cause the hammer head to vibrate at high frequency and generate impact force. Both hydraulic motors are connected to the power supply and hydraulic system through hydraulic pipelines. The surface of the crushing roller is provided with convex teeth. The crushing roller is used to roll and crush hardened cement or hard mineral crystal scale. The vibratory impact hammer is used to loosen hard dirt through high-frequency vibration.

[0009] Preferably, the crushing roller includes a first crushing roller and a second crushing roller arranged in parallel. The first crushing roller and the second crushing roller are driven by meshing with each other through a gear set, and the protruding teeth on the first crushing roller and the second crushing roller are arranged in a spiral shape.

[0010] Preferably, a connecting frame is fixedly installed at the front end of the main frame, and connecting plates matching the connecting frame are fixedly installed on the back of the reamer, the high-pressure water jet composite head, and the special crushing head. A T-shaped connecting groove is opened at the top of the connecting frame, and the two sides of the connecting plate are matched and engaged with the connecting groove. The hydraulic locking module includes multiple hydraulically driven locking pins and locking hooks installed on the connecting frame. One end of each locking pin is fixedly connected to the top of the locking hook. Locking holes for the locking pins to pass through are opened on the connecting plate, and the locking hooks are used to hook the edge of the connecting plate, locking the connecting plate in place. On the connecting frame; the fluid quick connector includes a high-pressure water quick connector and a hydraulic oil quick connector respectively installed at the high-pressure water port and the hydraulic oil port on the connecting frame and the connecting plate; when the hydraulic locking module is locked, the connecting frame and the connecting plate are in contact, and the high-pressure water quick connector and the hydraulic oil quick connector on the connecting frame automatically connect and form a seal with the high-pressure water quick connector and the hydraulic oil quick connector on the connecting plate, so as to realize the rapid connection between the water supply pipeline of the high-pressure water jet assembly and the hydraulic drive pipeline of the reamer assembly or the crushing roller and the power supply and hydraulic system.

[0011] Preferably, when the reamer and high-pressure water jet composite head are installed, the suction bucket is fixedly connected to the tail of the reamer and high-pressure water jet composite head by bolts, and the suction port is connected to the inside of the suction bucket by a pipe. When the special crushing head is installed, the suction bucket is set behind the crushing roller by a bracket, which is fixedly connected to the main frame, so that the suction bucket moves synchronously with the main frame.

[0012] Preferably, the suction bucket is always located behind the cutter assembly or crushing roller during operation, and an anti-clogging grid is fixedly installed at the bottom of the suction bucket. The anti-clogging grid is a plate-shaped structure with multiple grids, and the grid size of the anti-clogging grid matches the particle size that the submersible pump passes through.

[0013] Preferably, the sludge discharge pipe is a flexible wear-resistant hose, one end of which is connected to the discharge port of the suction bucket, and the other end of which is connected to the inlet of the processing equipment. The inner wall of the sludge discharge pipe is provided with a wear-resistant lining, and the processing equipment is a sludge dewatering machine or a sludge storage tank.

[0014] Preferably, the host frame is further provided with an environmental sensing component, which includes an underwater camera and a sonar detector. The underwater camera and the sonar detector are both installed at the front end of the host frame through sealed waterproof joints. The signal lines of the underwater camera and the sonar detector are connected to the input interface of the control system. The underwater camera is used to provide images inside the pool, and the sonar detector is used to detect the thickness, distribution range and topographic information of the scale on the bottom of the pool.

[0015] Preferably, the control system automatically identifies the type of scaling based on the echo characteristics obtained by the sonar detector, and controls the quick-change connection mechanism to switch the corresponding multi-functional working head assembly according to the identification result. At the same time, it adjusts the pressure of the high-pressure water jet assembly and the flow rate of the submersible pump by adjusting the output parameters of the power supply and hydraulic system.

[0016] The beneficial effects of this invention are: 1. By highly integrating the tracked walking mechanism, multi-functional working head assembly, high-pressure water jet assembly, collaborative suction mechanism, and power supply and control system onto the main frame, an integrated working platform is formed. In particular, through the quick-change connection mechanism, rapid and automatic switching between the reamer and high-pressure water jet composite head and the dedicated crushing head is achieved. This allows the same equipment to efficiently handle plated sludge and general scale through the synergistic action of the reamer and high-pressure water jet assembly, and to powerfully crush hard scale such as cement hardening or mineral crystals through the crushing roller and vibrating impact hammer in the dedicated crushing head using a combination of shearing and impact. Compared with existing equipment with single functions, this invention can be used for multiple purposes, perfectly adapting to the complex and ever-changing sediment conditions in sewage treatment plants, without the need to frequently call different equipment, significantly improving the versatility and flexibility of dredging operations. 2. The optimized design of the suction bucket and multi-functional working head assembly through a coordinated suction mechanism ensures that the suction bucket is always positioned behind the crushing operation point. Simultaneously, the submersible pump generates strong negative pressure within the sludge discharge pipe, enabling the immediate and continuous suction of crushed and dispersed sludge and debris to external processing equipment. In particular, the high-pressure nozzles on the sludge cleaning disc in the reamer and high-pressure water jet composite head can be swung and adjusted in direction by a hydraulic cylinder, creating a three-dimensional, composite crushing and flushing effect with the rotating cutting of the reamer assembly, effectively preventing secondary sedimentation and caking of the sludge. Through the coordinated operation of crushing, flushing, and suction, the sludge cleaning effect and processing efficiency per unit time are improved, solving the problems of excessive residue and easy re-caking after traditional equipment operation. 3. Through the design of the quick-change connection mechanism, a hydraulically driven locking module and a fluid quick connector are integrated. When changing the working head, the operator does not need to perform complicated bolt disassembly and assembly and connect oil and water pipelines one by one. He only needs to issue a command through the control system, and the hydraulically driven locking pin and locking hook can automatically lock or unlock the working head to the main frame. At the same time, the fluid quick connector also simultaneously completes the opening or closing of the high-pressure water circuit and hydraulic oil circuit. The entire switching process can be completed in a very short time, reducing equipment downtime and allowing more time to be used for actual dredging operations, thereby significantly improving the overall operation efficiency. 4. By designing an environmental perception component that includes an underwater camera and a sonar detector, the underwater camera can provide intuitive images of the pool, facilitating operators to monitor the operation. The sonar detector can accurately detect the thickness and distribution range of scale on the bottom of the pool, as well as underwater topography information. The control system can automatically identify the type of scale based on the sonar echo characteristics and intelligently switch the corresponding multi-functional working head component. At the same time, it can automatically adjust key parameters such as the pressure of the high-pressure water jet and the flow rate of the submersible pump, enabling the device to adaptively adjust according to the actual working conditions. This achieves a leap from manual operation to intelligent decision-making, reduces errors in human judgment, ensures the accuracy and safety of the operation, and lowers the labor intensity and technical threshold for operators. 5. The anti-clogging grid at the bottom of the suction bucket is matched with the particle size of the submersible pump, effectively intercepting large debris and preventing blockage of the sludge discharge pipe and the submersible pump, ensuring the continuous and stable operation of the suction system. The sludge discharge pipe uses a flexible wear-resistant hose with a wear-resistant inner lining, which not only enhances the durability of the pipeline and extends its service life, but also facilitates flexible movement of the device in the pool. The special crushing head features a double crushing roller structure with parallel arranged and spirally arranged convex teeth, which increases the contact area and crushing force with hard scale, making the crushing process more stable and efficient. Attached Figure Description

[0017] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0018] Figure 1 This is a schematic diagram of the structure for installing a special crusher head in the integrated sewage treatment plant sludge discharge device of the present invention; Figure 2 A schematic diagram of the integrated sludge discharge device for a wastewater treatment plant of the present invention, showing the structure of the composite head for installing the cutter and high-pressure water jet. Figure 3 This is a schematic diagram of the composite head structure of the reamer and high-pressure water jet of the present invention; Figure 4This is a schematic diagram of the dedicated crushing head structure of the present invention.

[0019] Explanation of reference numerals in the attached figures: 1. Main frame; 2. Tracked walking mechanism; 3. Power supply and hydraulic system; 4. Control system; 5. Quick-change connection mechanism; 6. Multi-functional working head assembly; 7. Harness and high-pressure water jet composite head; 8. Special crushing head; 9. Hydraulic locking module; 10. Fluid quick connector; 11. Cooperative suction mechanism; 12. Suction bucket; 13. Processing equipment; 14. Sludge discharge pipe; 15. Submersible pump; 16. Harness assembly; 17. High-pressure water jet... 18. Jet assembly; 19. High-pressure water pump; 20. Hydraulic cylinder; 21. Dredging disc; 22. High-pressure nozzle; 23. Dredging port; 24. Crushing roller; 25. Vibratory impact hammer; 26. Convex tooth; 27. First crushing roller; 28. Second crushing roller; 29. ​​Gear set; 30. Connecting frame; 31. Connecting plate; 32. Locking pin; 33. Locking hook; 34. Lock hole; 35. Anti-clogging grille; 36. Environmental sensing component; 37. Underwater camera; 38. Sonar detector. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this invention clearer, the various embodiments of this invention will be described in detail below with reference to the accompanying drawings. However, those skilled in the art will understand that many technical details have been provided in the various embodiments of this invention to facilitate a better understanding of this application. However, the technical solutions claimed in the claims of this application can be implemented even without these technical details and with various variations and modifications based on the following embodiments.

[0021] like Figure 1 and Figure 2 As shown, this embodiment provides an integrated sludge removal device for a sewage treatment plant, including a main frame 1. Each side of the main frame 1 is equipped with a protective plate to protect the internal components (not shown in the figure), serving as the support and installation foundation for the entire device. A tracked walking mechanism 2 is installed at the bottom of the main frame 1. This tracked walking mechanism 2 is driven by a hydraulic motor and can drive the entire sludge removal device to move smoothly on the bottom of the sewage treatment plant or on the ground, adapting to various complex terrains. The main frame 1 integrates a power supply and hydraulic system 3 and a control system 4. The power supply and hydraulic system 3 includes a diesel engine or explosion-proof motor, a hydraulic pump, a hydraulic valve group, an oil tank, and a high-pressure water pump, etc., to provide power for the entire device. The control system 4 includes a programmable logic controller (PLC) or an industrial control computer, a human-machine interface, and various sensors, used to coordinate and control the collaborative operation of various components.

[0022] The front end of the main frame 1 is connected to a multi-functional working head assembly 6 via a quick-change connection mechanism 5. The multi-functional working head assembly 6 includes two interchangeable working heads: a reamer and high-pressure water jet composite head 7 and a dedicated crushing head 8. The quick-change connection mechanism 5 is the key to achieving quick changing of the working head. The quick-change connection mechanism 5 includes a hydraulic locking module 9 and a fluid quick connector 10. The hydraulic locking module 9 is used to quickly lock and unlock the working head and the main frame 1. The fluid quick connector 10 is used to quickly connect or disconnect the high-pressure water circuit and the hydraulic oil circuit when changing the working head, without the need for manual disassembly and assembly of pipelines, which greatly improves the working efficiency.

[0023] Specifically, such as Figure 3 and Figure 4 As shown, a connecting frame 29 is fixedly installed at the front end of the main frame 1. Connecting plates 30 matching the connecting frame 29 are fixedly installed on the back of both working heads. A T-shaped connecting groove is opened at the top of the connecting frame 29. The two sides of the connecting plates 30 are matched and snapped into the connecting groove. The hydraulic locking module 9 includes multiple hydraulically driven locking pins 31 and locking hooks 32 installed on the connecting frame 29. Locking holes 33 for the locking pins 31 to pass through are opened on the connecting plate 30. A horizontal hydraulic cylinder is installed at the bottom end of the connecting plate 30. A vertically upward hydraulic cylinder is fixedly installed at the output end of the horizontal hydraulic cylinder. The output shaft of the vertical hydraulic cylinder passes through a through hole opened on the connecting frame 29. The locking pins 31 are fixedly installed... At the output end of the vertical hydraulic cylinder, one end of the locking hook 32 is fixedly connected to the top of the locking pin 31. When the working head needs to be connected, the connecting plate 30 fits against the connecting frame 29, the locking pin 31 extends and inserts into the locking hole 33, and at the same time, the locking hook 32 hooks the edge of the connecting plate 30, locking the connecting plate 30 onto the connecting frame 29. When unlocking, the locking pin 31 retracts, the locking hook 32 is released, and the working head can be separated. The fluid quick connector 10 includes male and female connectors installed on the high-pressure water port and hydraulic oil port on the connecting frame 29 and the connecting plate 30, respectively. When the connecting frame 29 and the connecting plate 30 are locked, the male and female connectors automatically connect and form a seal, realizing the rapid conduction of the oil and water circuits.

[0024] like Figure 3As shown, when the reamer and high-pressure water jet composite head 7 is installed, this working head is mainly used to treat compacted sludge and general scale. The front of the reamer and high-pressure water jet composite head 7 is equipped with a reamer assembly 16 driven by a hydraulic motor, which breaks up the clumps through rotational shearing force. At the same time, the high-pressure water jet assembly 17 works in conjunction. The high-pressure water jet assembly 17 includes a high-pressure water pump 18 (e.g., a CAT 3535 plunger pump) installed inside the main frame 1. The outlet of the high-pressure water pump 18 is connected to the high-pressure nozzle 21 on the sludge cleaning disc 20 installed on the housing of the reamer and high-pressure water jet composite head 7 through a high-pressure pipeline. The sludge cleaning disc 20 is connected to the housing through a hydraulic cylinder 19. The control system 4 can drive the sludge cleaning disc 20 to swing by controlling the extension and retraction of the hydraulic cylinder 19, thereby adjusting the spray direction and angle of the high-pressure nozzle 21 to better flush and soften the sludge to be cleaned. The rear of the reamer assembly 16 is provided with a sludge suction port 22, which is connected to the interior of the suction bucket 12 at the rear.

[0025] like Figure 4 As shown, when the special crushing head 8 is installed, this working head is specifically used to treat hard scale such as hardened cement or mineral crystals. The special crushing head 8 includes a crushing roller 23 and a vibrating impact hammer 24. The crushing roller 23 is preferably a first crushing roller 26 and a second crushing roller 27 arranged in parallel. The first crushing roller 26 and the second crushing roller 27 are meshed with each other through a gear set 28 and driven to rotate in opposite directions by a hydraulic motor. The convex teeth 25 on the surface of the first crushing roller 26 and the second crushing roller 27 are arranged in a spiral shape, which can efficiently shear and crush hard objects. The vibrating impact hammer 24 is driven by another hydraulic motor to drive an eccentric wheel, so that the hammer head of the vibrating impact hammer 24 generates high-frequency vibration, using the impact force to loosen or crack the hard scale. The crushed debris is collected by the suction bucket 12 set at the rear.

[0026] The collaborative suction mechanism 11 is used to pump the crushed and dispersed sludge and debris out of the pool. The collaborative suction mechanism 11 includes a suction bucket 12, a sludge discharge pipe 14, and a submersible pump 15. The suction bucket 12 is mounted on the multi-functional working head assembly 6, with its inlet facing the working area and always located behind the reamer assembly 16 or the crushing roller 23 to collect the treated waste in a timely manner. An anti-clogging grid 34 is fixedly installed at the bottom of the suction bucket 12. The grid size of the grid matches the particle size that the submersible pump 15 passes through (e.g., grid size of 10mm x ... The sludge discharge pipe 14 is a flexible, wear-resistant hose. One end of the sludge discharge pipe 14 is connected to the discharge port of the suction bucket 12, and the other end is connected to the treatment equipment 13 (such as a sludge dewatering machine or sludge storage tank) located outside the pool. The submersible sewage pump 15 (e.g., a submersible sewage pump of model WQ15-15-1.5) is fixedly installed on the suction bucket 12 or on the path of the sludge discharge pipe 14 to generate a strong negative pressure in the sludge discharge pipe 14, so as to continuously pump the sludge mixture in the suction bucket 12 to the treatment equipment 13.

[0027] The main frame 1 is also equipped with an environmental sensing component 35, which includes an underwater camera 36 (e.g., an explosion-proof underwater camera of model DS-2XC1143) and a sonar detector 37 (e.g., a multi-beam imaging sonar of model M370S). The underwater camera 36 and the sonar detector 37 are installed at the front end of the main frame 1 through a sealed waterproof joint, and transmit the acquired images and sonar data to the control system 4 in real time. The control system 4 can automatically identify the type, thickness and other characteristics of the scale based on the echo characteristics obtained by the sonar detector 37. Distribution range; based on this information, the control system 4 can make autonomous decisions: if it is determined to be general hardened sludge, it controls the quick-change connection mechanism 5 to switch and install the reamer and high-pressure water jet composite head 7; if it is determined to be hard scale, it switches and installs the special crushing head 8; at the same time, the control system 4 will also adjust the output parameters of the power supply and hydraulic system 3 in real time according to the hardness of the scale, such as adjusting the speed of the high-pressure water pump 18 to change the pressure of the high-pressure water jet component 17, or adjusting the motor frequency of the submersible pump 15 to control the suction flow rate, thereby realizing intelligent and precise sludge removal operations.

[0028] Working Principle: Before or during operation, the control system 4 activates the environmental sensing component 35. The underwater camera 36 collects images of the pool and transmits them to the control system 4 for intuitive monitoring by operators or the system. Simultaneously, the sonar detector 37 emits sound waves towards the bottom of the pool and receives echo signals. The signal processing unit within the control system 4 establishes a three-dimensional topographic map of the pool bottom based on the time, intensity, and characteristics of the echoes, and accurately identifies the distribution range, thickness, and physical properties (such as density and hardness) of sludge or scale. Based on a preset algorithm, the control system 4 automatically determines the type of waste to be treated: if it is determined to be general hardened sludge, it prepares to call the reamer and high-pressure water jet composite head 7; if it is determined to be hardened cement or mineral crystallized hard scale, it prepares to call the special crushing head 8. Based on the decision result of environmental sensing, the control system 4 drives the quick-change connection mechanism 5 to perform the work head replacement. If the currently installed work head does not meet the requirements, the control system 4 first moves the device to a suitable position through the tracked walking mechanism 2 and operates the hydraulic locking module 9: controlling the locking pin 31 to retract from the locking hole 33 on the connecting plate 30, while... The locking hook 32 is released, separating the current working head from the connecting frame 29 of the main frame 1. Then, the device moves to the working head to be replaced (e.g., a dedicated crushing head 8), aligning the connecting plate 30 on its back with the connecting frame 29. The control system 4 then drives the hydraulic locking module 9 again, inserting the locking pin 31 into the locking hole 33. The locking hook 32 hooks onto the edge of the connecting plate 30, firmly locking the new working head. Simultaneously with the locking action, the high-pressure water quick-connect and hydraulic oil quick-connect on the connecting frame 29 automatically align with their corresponding connectors on the connecting plate 30. This forms a high-pressure seal, allowing the water supply pipeline of the high-pressure water jet assembly 17 and the drive pipeline of the hydraulic motor inside the working head to be quickly connected to the power supply and hydraulic system 3. The entire switching process does not require manual disassembly and assembly, realizing the rapid and automatic replacement of the working head. After the working head is replaced, the device begins dredging operations. When dealing with general compacted sludge, the working mode of the reamer and high-pressure water jet composite head 7 is adopted. The control system 4 starts the power supply and hydraulic system 3, driving the hydraulic motor of the reamer assembly 16 to rotate at high speed, mechanically cutting and breaking up the compacted sludge.Simultaneously, the high-pressure water pump 18 starts, pressurizing the external water source or the clear liquid in the upper part of the pool to a preset pressure, and then delivering it to the high-pressure nozzle 21 on the sludge removal plate 20 through the high-pressure pipeline. The control system 4 adjusts the swing angle of the sludge removal plate 20 in real time according to the hardness of the sludge through the hydraulic cylinder 19, thereby changing the spray direction of the high-pressure nozzle 21, and performing high-pressure water jet flushing on the cutting area of ​​the reamer assembly 16 to help soften and disperse the sludge and separate it from the bottom of the pool. The crushed and dispersed mud-water mixture is stirred by the reamer assembly 16 and enters the suction bucket 12 through the adjacent suction port 22. The submersible pump 15 continues to run, generating a strong negative pressure in the mud discharge pipe 14, which in turn disperses the mud mixture in the suction bucket 12. After being filtered by the anti-clogging screen 34, the material is quickly sucked into and transported to the treatment equipment 13 (such as a sludge dewatering machine) outside the pool for further processing. When treating hardened cement or mineral crystal scale, a special crushing head 8 is used. The control system 4 starts the hydraulic motor on the special crushing head 8, driving the first crushing roller 26 and the second crushing roller 27 to rotate in opposite directions through the meshing of the gear set 28. The spiral convex teeth 25 on the surface of the crushing roller 23 perform strong shearing, squeezing and crushing of the hard scale. At the same time, the control system 4 starts the hydraulic motor of the vibrating impact hammer 24, driving the eccentric wheel to rotate at high speed, causing the hammer head to vibrate at high frequency, applying impact load to the scale, causing fatigue in its internal structure. The scale cracks and quickly loosens, effectively breaking down into smaller pieces under the combined action of the crushing roller 23 and the impact of the vibrating hammer 24. These pieces are then collected by the suction bucket 12 located behind the crushing roller 23 and, under the negative pressure generated by the submersible pump 15, are pumped to the external treatment equipment 13 through the sludge discharge pipe 14. Throughout the operation, the control system 4 continuously receives real-time feedback data from the environmental sensing component 35. By analyzing the echo changes of the sonar detector 37, the system can monitor the dredging effect and scale hardness changes in the working area in real time. Based on this data, the control system 4 can dynamically adjust the working parameters: automatically adjusting according to the scale hardness. The flow rate and pressure of the hydraulic motor supplying the reamer assembly 16 or the crushing roller 23 are adjusted to change its speed and torque; based on the degree of sludge compaction, the speed of the high-pressure water pump 18 is adjusted to change the outlet pressure of the high-pressure water jet assembly 17 to achieve the best softening and flushing effect; based on the sludge concentration and flow rate, the motor frequency of the submersible pump 15 is adjusted by frequency conversion to change the suction power, ensuring that the sludge concentration and flow rate in the sludge discharge pipe 14 are at the optimal state, preventing blockage and improving conveying efficiency; based on the topographic map constructed by the sonar detector 37, the control system 4 plans the optimal walking path and directs the tracked walking mechanism 2 to perform autonomous or assisted driving at the bottom of the pool to ensure that no work area is missed.

[0029] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0030] Those skilled in the art will understand that the above embodiments are specific examples of implementing the present invention, and in practical applications, various changes can be made to them in form and detail without departing from the spirit and scope of the present invention.

Claims

1. An integrated sludge removal device for a wastewater treatment plant, characterized in that: Includes a main frame (1), the bottom of which is equipped with a tracked walking mechanism (2) that drives the mud removal device to move, and the main frame (1) integrates a power supply and hydraulic system (3) and a control system (4); the front end of the main frame (1) is connected to a multi-functional working head assembly (6) through a quick-change connection mechanism (5). The multi-functional working head assembly (6) includes a reamer and high-pressure water jet composite head (7) and a special crushing head (8); the quick-change connection mechanism (5) includes a hydraulic locking module (9) and a fluid quick connector (10). The hydraulic locking module (9) is used to realize the quick locking and unlocking of the reamer and high-pressure water jet composite head (7) or the special crushing head (8) with the main frame (1). The fluid quick connector (10) is used to realize the quick connection or disconnection of the high-pressure water circuit and the hydraulic oil circuit. The sludge discharge device also includes a cooperative suction mechanism (11), which includes a suction bucket (12) mounted on the multi-functional working head assembly (6) and a processing device (13) mounted externally. The inlet of the suction bucket (12) faces the working area. A sludge discharge pipe (14) is connected between the processing device (13) and the suction bucket (12). A submersible pump (15) is fixedly installed on the suction bucket (12) or on the path of the sludge discharge pipe (14). The submersible pump (15) is used to generate negative pressure in the sludge discharge pipe (14). The control system (4) is electrically connected to the walking mechanism (2), the multi-functional working head assembly (6), the quick-change connection mechanism (5), the cooperative suction mechanism (11), and the power supply and hydraulic system (3), respectively.

2. The integrated sewage treatment plant sludge discharge device according to claim 1, characterized in that: The reamer and high-pressure water jet composite head (7) includes a reamer assembly (16) driven to rotate by a hydraulic motor. The reamer assembly (16) is installed at the front of the reamer and high-pressure water jet composite head (7). The reamer assembly (16) is used to break up plated sludge and general scale. The hydraulic motor is connected to the power supply and hydraulic system (3) through a hydraulic pipeline. The main frame (1) and the reamer and high-pressure water jet composite head (7) are provided with a high-pressure water jet assembly (17) for assisting in softening or dispersing scale. The high-pressure water jet assembly (17) includes a high-pressure water pump (18) installed inside the main frame (1). The housing of the reamer and high-pressure water jet composite head (7) is connected to a sludge removal plate (20) via a hydraulic cylinder (19). The oil inlet and oil return port of the hydraulic cylinder (19) are connected to the hydraulic valve group of the power supply and hydraulic system (3) via hydraulic pipelines. Multiple high-pressure nozzles (21) are fixedly installed on the sludge removal plate (20). The spray direction of the high-pressure nozzles (21) is adjusted by driving the sludge removal plate (20) to swing via the hydraulic cylinder (19). The water inlet of the high-pressure water pump (18) is connected to an external water source or a clear liquid intake port at the top of the pool via a pipeline. The water outlet of the high-pressure water pump (18) is connected to the high-pressure nozzles (21) via a high-pressure pipeline. The rear of the reamer and high-pressure water jet composite head (7) is provided with a sludge suction port (22) adjacent to the reamer assembly (16), and the rear end of the sludge suction port (22) is connected to the sludge suction bucket (12) of the cooperative suction mechanism (11).

3. The integrated sewage treatment plant sludge discharge device according to claim 1, characterized in that: The special crushing head (8) includes a crushing roller (23) driven to rotate by a hydraulic motor and a vibratory impact hammer (24) driven to rotate by a hydraulic motor to generate impact force by high-frequency vibration of the hammer head. Both hydraulic motors are connected to the power supply and hydraulic system (3) through hydraulic pipelines. The surface of the crushing roller (23) is provided with convex teeth (25). The crushing roller (23) is used to roll and crush hard cement or mineral crystals. The vibratory impact hammer (24) is used to loosen hard dirt through high-frequency vibration.

4. The integrated sewage treatment plant sludge discharge device according to claim 3, characterized in that: The crushing roller (23) includes a first crushing roller (26) and a second crushing roller (27) arranged in parallel. The first crushing roller (26) and the second crushing roller (27) are driven by meshing with each other through a gear set (28). The protruding teeth (25) on the first crushing roller (26) and the second crushing roller (27) are arranged in a spiral shape.

5. The integrated sewage treatment plant sludge discharge device according to claim 2, characterized in that: The front end of the main frame (1) is fixedly provided with a connecting frame (29). The back of the reamer, the high-pressure water jet composite head (7), and the special crushing head (8) are all fixedly provided with connecting plates (30) that match the connecting frame (29). The top of the connecting frame (29) is provided with a T-shaped connecting groove. The two sides of the connecting plate (30) are matched and snapped into the connecting groove. The hydraulic locking module (9) includes multiple hydraulically driven locking pins (31) and locking hooks (32) installed on the connecting frame (29). One end of the locking pin (31) is fixedly connected to the top of the locking hook (32). The connecting plate (30) has a locking hole (33) through which the locking pin (31) passes. The locking hook (32) is used to hook the edge of the connecting plate (30) and lock the connecting plate (30) onto the connecting frame (29). The fluid quick connector (10) includes a high-pressure water quick connector and a hydraulic oil quick connector respectively installed at the high-pressure water port and the hydraulic oil port on the connecting frame (29) and the connecting plate (30). When the hydraulic locking module (9) is locked, the connecting frame (29) is attached to the connecting plate (30), and the high-pressure water quick connector and hydraulic oil quick connector on the connecting frame (29) are automatically connected to the high-pressure water quick connector and hydraulic oil quick connector on the connecting plate (30) and form a seal, so as to realize the rapid connection between the water supply pipeline of the high-pressure water jet assembly (17) and the hydraulic drive pipeline of the reamer assembly (16) or the crushing roller (23) and the power supply and hydraulic system (3).

6. The integrated sewage treatment plant sludge discharge device according to claim 1, characterized in that: When the reamer and high-pressure water jet composite head (7) is installed, the suction bucket (12) is fixedly connected to the tail of the reamer and high-pressure water jet composite head (7) by bolts, and the suction port (22) is connected to the inside of the suction bucket (12) by a pipe. When the special crushing head (8) is installed, the suction bucket (12) is set behind the crushing roller (23) by a bracket, and the bracket is fixedly connected to the main frame (1) so that the suction bucket (12) moves synchronously with the main frame (1).

7. The integrated sewage treatment plant sludge discharge device according to claim 6, characterized in that: The suction bucket (12) is always located behind the reamer assembly (16) or the crushing roller (23) during operation. The bottom of the suction bucket (12) is fixedly provided with an anti-clogging grid (34). The anti-clogging grid (34) is a plate-shaped structure with multiple grids. The grid size of the anti-clogging grid (34) matches the particle size of the submersible pump (15).

8. The integrated sewage treatment plant sludge discharge device according to claim 1, characterized in that: The sludge discharge pipe (14) is a flexible wear-resistant hose. One end of the sludge discharge pipe (14) is connected to the discharge port of the suction bucket (12), and the other end of the sludge discharge pipe (14) is connected to the feed port of the processing equipment (13). The inner wall of the sludge discharge pipe (14) is provided with a wear-resistant lining. The processing equipment (13) is a sludge dewatering machine or a sludge storage tank.

9. The integrated sewage treatment plant sludge discharge device according to claim 1, characterized in that: The host frame (1) is also equipped with an environmental sensing component (35), which includes an underwater camera (36) and a sonar detector (37). The underwater camera (36) and the sonar detector (37) are installed at the front end of the host frame (1) through a sealed waterproof connector. The signal lines of the underwater camera (36) and the sonar detector (37) are connected to the input interface of the control system (4). The underwater camera (36) is used to provide images inside the pool, and the sonar detector (37) is used to detect the thickness, distribution range and topographic information of the scale at the bottom of the pool.

10. The integrated sewage treatment plant sludge discharge device according to claim 9, characterized in that: The control system (4) automatically identifies the type of scaling based on the echo characteristics obtained by the sonar detector (37), and controls the quick-change connection mechanism (5) to switch the corresponding multi-functional working head assembly (6) based on the identification result. At the same time, it adjusts the pressure of the high-pressure water jet assembly (17) and the flow rate of the submersible pump (15) by adjusting the output parameters of the power supply and hydraulic system (3).

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