Underwater mud scraping equipment

Abstract

The invention relates to the field of water treatment equipment, in particular to underwater mud scraping equipment. The equipment comprises a mud scraping device, a mud discharging device and a flushing device which are arranged in a sedimentation tank, the mud scraping device is driven by a transverse pushing mechanism to reciprocate through a mud scraping frame on a guide seat, and mud is pushed into a mud tank; the mud discharging device sucks and discharges the mud by utilizing negative pressure generated by the gas stripping pipe; and the flushing device is used for purging the sludge tank through a flushing pipe communicated with the compressed air pipe. According to the invention, efficient and stable slurry collection and discharge are realized, the water treatment efficiency is improved, and the maintenance cost is reduced.

Description

Technical Field

[0001] This application relates to the field of water treatment equipment technology, and in particular to an underwater sludge scraping device. Background Technology

[0002] Rectangular sedimentation tanks in waterworks and municipal wastewater treatment plants are an important part of urban wastewater treatment, used to remove suspended solids and sediments from the water. Under their own gravity, suspended solids and sediments settle to the bottom of the tank, forming a sludge layer, which needs to be cleaned regularly.

[0003] To solve the above problems, the existing technical solutions usually use an electrically driven sludge scraper. The motor drives the sludge scraper to move back and forth at the bottom of the pool, pushing the sludge into the sludge trough. The sludge in the sludge trough is then discharged using a submersible pump or an external sludge suction pump.

[0004] However, during long-term operation, due to the complex underwater environment, the failure rate of submersible pumps and / or external sludge suction pumps is high, and maintenance is difficult, which seriously affects the sewage treatment efficiency and the service life of the equipment. In addition, the sludge accumulated in the sludge tank often clumps, making it difficult for the submersible pumps and / or external sludge suction pumps to clean the sludge in the sludge tank. Over time, the sludge tank will be filled with clumps and lose its collection function, and it will also cause serious damage to the submersible pumps and external sludge suction pumps. Therefore, there is an urgent need for a new sludge scraping device that can improve sludge discharge efficiency and reduce failure rate while ensuring the stability and durability of the equipment. Summary of the Invention

[0005] To overcome the shortcomings of the prior art, this application provides an underwater sludge scraping device that can improve sludge removal efficiency and reduce failure rate while ensuring the stability and durability of the device.

[0006] This application is achieved through the following technical solution: An underwater sludge scraping device includes a sludge scraping device, a sludge discharge device, and a flushing device, all installed in a sedimentation tank. The sedimentation tank has a sludge trough at its bottom. The sludge scraping device includes a guide seat at the bottom of the sedimentation tank, with a sludge scraper slidably connected to the guide seat. The sludge scraper is powered by a lateral pushing mechanism to perform horizontal reciprocating motion, pushing the sludge from the bottom of the sedimentation tank into the sludge trough. The sludge discharge device includes an air lift pipe, the suction inlet of which extends into the sludge trough, and a compressed air pipe connected to the side of the air lift pipe. The compressed air pipe provides… The airflow moves along the direction of the mud outlet of the airlift pipe, forming a negative pressure at the suction inlet of the airlift pipe, thereby drawing the mud into the airlift pipe for discharge; the flushing device includes a flushing pipe, which is connected to a compressed air pipe, and the air outlet of the flushing pipe extends into the mud tank for oblique blowing and washing of the side walls of the mud tank; several conical unit tanks are arranged along the width direction in the mud tank, and each conical unit tank is equipped with an airlift pipe and a flushing pipe; the bottom center of the conical unit tank is provided with a protrusion, and the transition section between the protrusion and the conical unit tank is an arc-shaped structure.

[0007] By adopting the above technical solution, this underwater sludge scraping equipment uses an air-lift sludge discharge device to replace the traditional submersible pump or external suction pump for sludge discharge. This effectively reduces the number of underwater moving parts, lowers the failure rate, and improves the convenience of maintenance and use. Simultaneously, the flushing device generates impact airflow, effectively solving the problem of sludge caking and ensuring smooth sludge discharge. Furthermore, the equipment consists of three main components that coordinate with each other, with a flexible overall layout design that can be adjusted according to different processing scales, improving the equipment's adaptability and sludge discharge efficiency. Several conical unit troughs are arranged along the width of the sludge tank, each equipped with an air-lift pipe and a flushing pipe, effectively improving the sludge discharge efficiency and flushing effect. Specifically, the conical unit trough design makes it easier for sludge to concentrate in the center, thereby improving the efficiency of the air-lift pipe. The sludge suction efficiency is improved, and the flushing pipe can precisely blow and wash each unit tank to prevent sludge caking and ensure the cleanliness of the sludge tank. This design not only improves the overall performance of the equipment but also enhances its adaptability and reliability. The conical unit tank has a circular protrusion at the center of its bottom, and the transition section between the protrusion and the unit tank is arc-shaped. On the one hand, this allows the sludge to be distributed more evenly in the unit tank, avoiding local accumulation and improving sludge discharge efficiency. On the other hand, it guides the blowing airflow, so that the airflow that is obliquely blown towards the wall of the conical unit tank converges towards the center of the bottom of the tank under the action of the arc-shaped structure and the protrusion, and flows in the opposite direction to the air lift pipe. This not only better removes the clumps but also further improves the suction effect and efficiency of the air lift pipe, and prioritizes sending the sludge clumps accumulated at the bottom into the air lift pipe for discharge.

[0008] Optionally, the sludge scraper includes parallel fixed rods, which are fixed by several tie rods, and the lower end of the fixed rods is provided with a sludge scraper; the bottom of the sedimentation tank is evenly distributed with several parallel sliding rails.

[0009] By adopting the above technical solutions, the fixing rod of the sludge scraper adopts a scissor-braced tie rod structure design, which solves the problem of the stability of the planar structure of large sludge scrapers, especially in large sedimentation tanks, and ensures the long-term stable operation of the sludge scraper. The scraper blade is set at the lower end of the fixing rod, ensuring that the scraper blade can fit tightly against the bottom of the tank and efficiently push the sludge into the sludge trough, thereby improving the sludge scraping efficiency. The bottom slide rail abuts against the scraper blade. The slide rail and scraper blade can be made of ultra-high molecular weight polyethylene material, which not only has high dimensional accuracy and easy control of installation level, but also has good wear resistance and self-lubrication properties, significantly extending the service life, reducing the operating resistance of the equipment, and thus reducing energy consumption.

[0010] Alternatively, the scraper blade is hinged to the fixed rod, and the scraper blade is provided with a limiting block, which is used to limit the deflection angle of the scraper blade.

[0011] By adopting the above technical solution, the scraper is hinged to the fixed rod and a limiting block is set on it. When the scraper frame moves towards the mud trough, the scraper can scrape the mud at the bottom of the sedimentation tank in a vertical state. When the scraper frame moves away from the mud trough, the scraper deflects towards the mud trough under the resistance of the mud, so as to reduce the pull-back resistance of the lateral pushing mechanism and reduce energy consumption.

[0012] Optionally, the sludge outlet of the air lift pipe is connected to the sludge discharge guide channel; the sludge discharge guide channel is fixed on the side wall of the sedimentation tank, and the bottom of the sludge discharge guide channel is arranged at an angle.

[0013] By adopting the above technical solution, the efficiency and reliability of sludge discharge can be effectively improved. Specifically, the sludge outlet of the air lift pipe is connected to the sludge discharge guide channel, which allows the sludge to smoothly enter the sludge discharge guide channel under the action of air lift, avoiding the clogging problem in the traditional sludge discharge method. The sludge discharge guide channel is fixed on the side wall of the sedimentation tank, which not only improves the stability of the structure, but also facilitates maintenance and repair. In addition, the bottom of the sludge discharge guide channel is arranged at an angle, which further promotes the smooth flow of sludge and reduces the residence time of sludge in the guide channel, thereby reducing the risk of secondary sedimentation.

[0014] Optionally, the air outlet of the flushing pipe is provided with an annular pipe; the annular pipe is evenly distributed with several air purging ports, and the annular pipe is located directly above the protrusion.

[0015] By adopting the above technical solution, the air outlet of the flushing pipe is equipped with an annular pipe with multiple blowing ports evenly distributed on the annular pipe. The annular pipe is located directly above the protrusion, which can realize all-round and uniform oblique blowing and washing of the inside of the unit tank, effectively preventing sludge caking and ensuring smooth sludge discharge.

[0016] Optionally, the suction end of the air lifting tube is provided with a flared opening, which is located directly above the protrusion, and the diameter of the larger end of the flared opening is larger than the diameter of the protrusion.

[0017] By adopting the above technical solution, the design of the flared mouth allows the air lift pipe's inlet to better cover the protrusion, expanding the sludge suction range, absorbing more rinsing airflow, and further improving sludge suction efficiency. Specifically, the diameter of the larger end of the flared mouth is larger than the diameter of the protrusion, ensuring that the airflow forms an effective negative pressure area when entering the air lift pipe, further enhancing the suction capacity for sludge and avoiding sludge accumulation and blockage problems.

[0018] Optionally, the lateral pushing mechanism includes a power telescopic rod, a connecting rod, and a crank-triangle rod; the crank-triangle rod is rotatably connected to a bracket located at the bottom of the side wall of the sedimentation tank, and the horizontal section of the crank-triangle rod is hinged to the connecting rod; the connecting rod is hinged to the power telescopic rod, which provides power for vertical movement and drives the vertical section of the crank-triangle rod to move laterally; a transmission component is provided between the vertical section of the crank-triangle rod and the sludge scraper, and the transmission component drives the sludge scraper to perform horizontal reciprocating motion.

[0019] By adopting the above technical solution, the power telescopic rod provides vertical power, which is transmitted to the crank triangular rod through the connecting rod, causing the vertical end of the crank triangular rod to move horizontally, thereby realizing the reciprocating motion of the sludge scraper. The mechanism is reasonably designed and has high transmission efficiency, which can effectively drive the sludge scraper to reciprocate at the bottom of the sedimentation tank, ensuring that the sludge is smoothly pushed into the sludge trough. At the same time, the mechanism has a simple structure, is easy to maintain, and improves the reliability and service life of the equipment.

[0020] Further optionally, the transmission component is a push rod hinged between the vertical section of the crank triangular rod and the mud scraper.

[0021] By adopting the above technical solution, the horizontal movement of the vertical section of the crank triangular rod can be smoothly transmitted to the scraper frame, ensuring that the scraper frame is more stable and reliable during reciprocating motion, reducing mechanical vibration and noise, and extending the service life of the equipment. At the same time, the design of the push rod makes the transmission structure simple and compact, easy to manufacture and maintain, and improves the overall performance of the equipment.

[0022] Further optionally, the transmission component is a pin disposed on the vertical section of the crank triangular rod, and the pin is provided with a pulley; the mud scraper is provided with a vertically arranged lever, the lever is provided with a groove, and the pulley is slidably connected in the groove.

[0023] By adopting the above technical solution, this underwater sludge scraping device can achieve efficient and stable sludge scraping operations, and greatly reduces the vertical component of the crank triangular rod during movement, so that the sludge scraper is only subjected to horizontal thrust, reducing the load on the sludge scraper and effectively protecting it. Specifically, by setting the transmission component as a combination of a pin and a pulley, and setting a vertically arranged lever on the sludge scraper, the power transmission is smoother, reducing mechanical wear and improving the service life of the equipment. At the same time, the cooperation between the pulley and the groove can effectively reduce frictional resistance, ensuring smoother reciprocating motion of the sludge scraper and improving sludge scraping efficiency. In addition, this transmission method can also better adapt to the needs of different working conditions, enhancing the reliability and flexibility of the equipment.

[0024] Optionally, the connecting rod includes an upper connecting rod and a lower connecting rod; the upper connecting rod is slidably connected to the lower connecting rod, and a pressure sensor and a pre-tensioning elastic element are provided between the lower connecting rod and the upper connecting rod, wherein the pressure sensor is used to sense the elastic force of the pre-tensioning elastic element.

[0025] By adopting the above technical solution, the upper and lower parts of the connecting rod are slidably connected, which improves the flexibility and adaptability of the equipment. Specifically, the setting of the pre-tightening elastic element can absorb the vibration and impact during the operation of the equipment to a certain extent, further extending the service life of the equipment. It can also provide effective buffer protection when foreign objects are stuck in the parts or the scraper frame. At the same time, the pressure sensor can monitor the change of elasticity of the pre-tightening elastic element in real time. When the sensing value exceeds the set value of the equipment control unit, the control unit can stop the operation of the power telescopic rod, thereby improving the reliability and stability of the equipment.

[0026] In summary, this application includes at least one of the following beneficial technical effects: This application utilizes an air-lift sludge removal device to replace the traditional submersible sludge pump or external suction pump for sludge removal, effectively reducing the number of underwater moving parts, lowering the failure rate, and improving the convenience of maintenance and use. At the same time, the flushing device can generate impact airflow, effectively solving the problem of sludge caking and ensuring the smooth discharge of sludge. The fixed rod of the sludge scraper in this application adopts a scissor brace tie rod system design, which solves the problem of the stability of the planar structure of the large sludge scraper, especially in large sedimentation tanks, and ensures the long-term stable operation of the sludge scraper. The scraper blade is set at the lower end of the fixed rod, which ensures that the scraper blade can fit tightly against the bottom of the tank and efficiently push the sludge into the sludge trough, thereby improving the sludge scraping efficiency. The mud tank of this application has several conical unit tanks arranged along the width direction. Each conical unit tank is equipped with an air lift pipe and a flushing pipe, which can effectively improve the mud tank's sludge discharge efficiency and flushing effect. The design of the conical unit tank makes it easier for sludge to concentrate in the center, thereby improving the sludge suction efficiency of the air lift pipe. At the same time, the flushing pipe can accurately blow and wash each unit tank to prevent sludge from caking and ensure the cleanliness of the mud tank.

[0027] The structural design of the air lift pipe, flushing pipe and mud tank in this application allows the mud discharge device and the flushing device to work together, so that while fulfilling their respective functions, they can interact with each other to further improve the mud discharge and flushing effect. Attached Figure Description

[0028] Figure 1 This is a front view structural diagram of the underwater sludge scraping device described in Embodiment 1; Figure 2 This is a side view of the underwater sludge scraping device described in Embodiment 1; Figure 3 This is a top view of the underwater sludge scraping device described in Embodiment 1; Figure 4 This is a schematic diagram of the lateral pushing mechanism described in Embodiment 1; Figure 5 This is a schematic diagram of the guide seat described in Embodiment 1; Figure 6 This is a partial structural schematic diagram of the tie rod frame described in Embodiment 1; Figure 7 This is a front view of the installation structure of the scraper blade described in Embodiment 1; Figure 8 This is a top view of the installation structure of the scraper blade described in Embodiment 1; Figure 9 This is a front view of the installation structure of the scraper blade described in Embodiment 2; Figure 10 This is a top view of the installation structure of the scraper blade described in Embodiment 2; Figure 11 This is a schematic diagram of the structure of the scraper moving away from the mud trough as described in Embodiment 2; Figure 12 This is a front view structural diagram of the underwater sludge scraping device described in Embodiment 3; Figure 13 This is a partial structural schematic diagram of the lateral pushing mechanism described in Embodiment 3; Figure 14 This is a front view structural diagram of the underwater sludge scraping device described in Embodiment 4; Figure 15 This is a partial structural diagram of the connecting rod described in Embodiment 4; Figure 16This is a schematic diagram of the upper connecting rod described in Embodiment 4.

[0029] In the diagram: 1. Sedimentation tank; 11. Sludge trough; 111. Conical unit trough; 112. Protrusion; 2. Sludge scraping device; 21. Guide seat; 211. Seat plate; 212. Guide rod; 22. Sludge scraper frame; 221. Fixed rod; 2211. Toggle rod; 2212. Slide groove; 2213. Mounting plate; 2214. Hinge seat; 222. Tie rod frame; 2221. Support rod; 2222. Buckle; 223. Sludge scraper; 2231. Wear-resistant plate; 2232. Limiting block; 23. Lateral pushing mechanism; 231. Power telescopic rod; 232. Connecting rod; 2321. Upper connecting rod; 2322. Insertion part; 2323 1. Limiting oblong hole; 2324. Lower connecting rod; 2325. Limiting pin; 2326. Pre-tightening elastic element; 2327. Pressure sensor; 233. Crank triangular rod; 2331. Horizontal section; 2332. Vertical section; 2333. Pulley; 2334. Pulley; 234. Push rod; 235. Bracket; 3. Sludge discharge device; 31. Air lifting pipe; 32. Trumpet mouth; 4. Flushing device; 41. Flushing pipe; 42. Annular pipe; 421. Blowing port; 5. Slide rail; 6. Sludge discharge guide groove; 7. Compressed air pipe; 71. First branch pipe; 711. First regulating valve; 72. Second branch pipe; 721. Second regulating valve. Detailed Implementation

[0030] The technical solutions of various embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0031] Example 1, referring to Figure 1This application discloses an underwater sludge scraping device, including a sludge scraping device 2, a sludge discharge device 3, and a flushing device 4 disposed in a sedimentation tank 1. A sludge trough 11 is provided at the bottom of the sedimentation tank 1. The sludge scraping device 2 includes a guide seat 21 disposed at the bottom of the sludge trough 11, and a sludge scraping frame 22 is slidably connected to the guide seat 21. The sludge scraping frame 22 is powered by a transverse pushing mechanism 23 and performs horizontal reciprocating motion to push the sludge at the bottom of the sedimentation tank 1 into the sludge trough 11. The sludge discharge device 3 includes an air lift pipe 31, the suction port of which extends into the sludge trough 11, and a compressed air pipe 7 is connected to the side of the air lift pipe 31. The airflow provided by the air pipe 7 moves along the direction of the mud outlet of the air lift pipe 31, forming a negative pressure at the suction port of the air lift pipe 31, thereby drawing the mud into the air lift pipe 31 and discharging it; the flushing device 4 includes a flushing pipe 41, which is connected to the compressed air pipe 7, and the air outlet of the flushing pipe 41 extends into the mud tank 11 for blowing and washing the mud tank 11. The compressed air pipe 7 may be provided with a first branch pipe 71 and a second branch pipe 72. The first branch pipe 71 is provided with a first pressure regulating valve, and the second branch pipe 72 is provided with a second pressure regulating valve. The air lift pipe 31 is connected to the first branch pipe 71, and the flushing pipe 41 is connected to the second branch pipe 72.

[0032] Reference Figures 2-3 Specifically, the sludge tank 11 has several conical unit tanks 111 arranged along the width direction. Each conical unit tank 111 is equipped with an air lifting pipe 31 and a flushing pipe 41. The bottom center of the conical unit tank 111 is provided with a circular protrusion 112, and the transition section between the protrusion 112 and the conical unit tank 111 is an arc-shaped structure, which makes the sludge more evenly distributed in the unit tank, avoids local accumulation, and improves the sludge discharge efficiency.

[0033] Reference Figures 2-3 The air outlet of the flushing pipe 41 is provided with an annular pipe 42, on which several blowing ports 421 are evenly distributed. The annular pipe 42 is located directly above the protrusion 112, which can achieve all-round and uniform blowing of the inside of the unit tank, effectively preventing sludge caking and ensuring smooth sludge discharge. The suction end of the air lift pipe 31 is provided with a trumpet mouth 32, which is located directly above the protrusion 112. The diameter of the larger end of the trumpet mouth 32 is larger than the diameter of the protrusion 112, which ensures that the airflow forms an effective negative pressure area when entering the air lift pipe 31, further enhancing the sludge attraction capacity and avoiding sludge accumulation and blockage. The sludge outlet of the air lift pipe 31 is connected to the sludge discharge guide 6, which is fixed on the side wall of the sedimentation tank 1 and the bottom of the sludge discharge guide 6 is arranged at an angle.

[0034] Reference Figures 4-5The lateral pushing mechanism 23 includes a power telescopic rod 231, a connecting rod 232, and a crank-triangle rod 233. The crank-triangle rod 233 is rotatably connected to a bracket 235 located at the bottom of the side wall of the sedimentation tank 1, and the horizontal section 2331 of the crank-triangle rod 233 is hinged to the connecting rod 232. The connecting rod 232 is hinged to the power telescopic rod 231, which provides power for vertical movement and drives the vertical section 2332 of the crank-triangle rod 233 to move laterally. The vertical section 2332 of the 3rd section is connected to the scraper frame 22 by a transmission component, which drives the scraper frame 22 to perform horizontal reciprocating motion. The transmission component is a push rod 234 hinged between the vertical end of the crank triangular rod 233 and the scraper frame 22. The power telescopic rod 231 can be a hydraulic telescopic rod or an electric telescopic rod, preferably a hydraulic telescopic rod to bear a larger load. The telescopic rod, connecting rod 232, crank triangular rod 233 and push rod 234 can be made of stainless steel or coated with a protective layer for corrosion protection.

[0035] Reference Figures 4-5 The guide seat 21 includes a seat plate 211 fixed on the bottom of the sedimentation tank 1, located at the beginning and end of the sedimentation tank 1; the seat plate 211 is provided with square guide rods 212 arranged along the length of the sedimentation tank 1; the sludge scraper 22 includes three parallel fixed rods 221, the fixed rods 221 are made of square tubes, and the inner cavity of the square tubes is adapted to the guide rods 212 and slidably sleeved on the guide rods 212; the fixed rods 221 are fixed by several tie rods 222 through buckles 2222.

[0036] refer to Figure 6 The tie rod bracket 222 consists of four support rods 2221 and a buckle 2222. The fixing rod 221 is inserted into the buckle 2222. The four support rods 2221 are arranged in a cross structure and connected and fixed to form a stable triangular structure. refer to Figures 7-9 The lower end of the fixing rod 221 is welded with an installation plate 2213, and a scraper 223 arranged along the width of the sedimentation tank 1 is fixed on the installation plate 2213 by bolts. The scraper 223 is made of plate and includes a vertical part and a wedge-shaped part. The scraper 223 is provided with a wear-resistant plate 2231. The wear-resistant plate 2231, the vertical part and the wedge-shaped part form a triangular cross section. The wear-resistant plate 2231 is made of ultra-high molecular weight polyethylene material, which not only has high dimensional accuracy and easy control of installation level, but also has good wear resistance and self-lubrication, which significantly extends the service life, reduces the operating resistance of the equipment, and thus reduces energy consumption.

[0037] refer to Figures 7-9Three parallel slide rails 5 are evenly distributed at the bottom of the sedimentation tank 1 along its length, located directly below the fixed rod 221 and abutting against the wear-resistant plate 2231 on the scraper 223 to ensure the stable operation of the scraper frame 22. The slide rails 5 are also made of ultra-high molecular weight polyethylene, which not only has high dimensional accuracy and easy control of installation level, but also has good wear resistance and self-lubrication, significantly extending service life, reducing equipment operating resistance, and thus reducing energy consumption.

[0038] The implementation principle of this embodiment is as follows: This underwater sludge scraping equipment uses an air-lift sludge discharge device 3 to replace the traditional submersible pump or external sludge suction pump for sludge discharge, effectively reducing the number of underwater moving parts, lowering the failure rate, and improving the convenience of maintenance and use. Simultaneously, the flushing device 4 generates impact airflow, effectively solving the problem of sludge caking and ensuring smooth sludge discharge. Furthermore, the equipment consists of three main components that coordinate with each other, with a flexible overall layout design that can be adjusted according to different processing scales, improving the equipment's adaptability and sludge discharge efficiency. In particular, the design of the conical unit trough 111 makes it easier for sludge to concentrate in the center, thereby improving the sludge suction efficiency of the air-lift pipe 31. At the same time, the flushing pipe 41 can precisely blow and wash each unit trough, preventing sludge caking and ensuring the cleanliness of the sludge trough 11. This design not only improves the overall performance of the equipment but also enhances its adaptability and reliability. The conical unit trough 111 has a circular convex center at its bottom. The protrusion 112 and the transition section connecting the protrusion 112 and the unit tank are arc-shaped. On the one hand, this makes the sludge more evenly distributed in the unit tank, avoids local accumulation, and improves the sludge discharge efficiency. On the other hand, it guides the blowing airflow, so that the airflow that is obliquely blown towards the wall of the conical unit tank 111 converges towards the center of the bottom of the tank under the action of the arc-shaped structure and the protrusion 112, and flows in the opposite direction to the air lift pipe 31. This not only can better remove the clumps, but also further improves the suction effect and efficiency of the air lift pipe 31, and preferentially sends the sludge clumps accumulated at the bottom into the air lift pipe 31 for discharge.

[0039] Example 2, refer to Figures 10-11 The difference between this embodiment and embodiment one is that a hinge seat 2214 is welded to the lower end of the fixing rod 221, and the scraper 223 is hinged to the hinge seat 2214. The scraper 223 has an L-shaped structure and can be made of angle steel. A limiting block 2232 is provided on the back of the scraper 223. The limiting block 2232 is used to limit the scraper 223 from deflecting away from the mud trough 11. The limiting block 2232 is provided with a hinge hole for connecting with the hinge seat 2214.

[0040] The implementation principle of this embodiment is as follows: when the scraper 222 moves toward the mud trough 11, the scraper 223 scrapes the mud at the bottom of the sedimentation tank 1 in a vertical state. When the scraper 22 moves away from the mud trough 11, the scraper 223 deflects toward the mud trough 11 under the resistance of the mud, so as to reduce the pullback resistance of the lateral pushing mechanism 23 and reduce energy consumption.

[0041] Example 3, referring to Figures 12-13 The difference between this embodiment and the first embodiment is that the transmission component is a pin 2333 set in the vertical section 2332 of the crank triangular rod 233, and a pulley 2334 is provided on the pin 2333; the mud scraper 22 is provided with a vertically arranged lever 2211, and a groove 2212 is provided in the lever 2211, and the pulley 2334 is slidably connected in the groove 2212.

[0042] The implementation principle of this embodiment is as follows: This transmission method can achieve efficient and stable mud scraping operation, and greatly reduces the vertical component of the crank triangular rod 233 during the movement process, so that the mud scraper 22 is only subjected to horizontal thrust, which reduces the load on the mud scraper 22 and effectively protects the mud scraper 22.

[0043] Example 4, refer to Figures 14-16 The difference between this embodiment and Embodiment 1 is that the connecting rod 232 adopts a floating design, including an upper connecting rod 2321 and a lower connecting rod 2324; the upper connecting rod 2321 is slidably connected in the lower connecting rod 2324, and a pressure sensor 2327 and a pre-tightening elastic element 2326 are provided between the lower connecting rod 2324 and the upper connecting rod 2321. The pressure sensor 2327 is used to sense the elastic force of the pre-tightening elastic element 2326. Specifically, both the upper connecting rod 2321 and the lower connecting rod 2324 are made of steel pipe; the upper connecting rod 2321 is provided with a plug-in part 2322, and the inner diameter of the plug-in part 2322 is compatible with that of the lower connecting rod 2324. The upper connecting rod 2321 is equipped with a positioning shoulder at one end and a limiting waist hole at the other end. The insertion part 2322 is slidably inserted into the lower connecting rod 2324, and the lower connecting rod 2324 is provided with a limiting pin 2325, which passes through the limiting waist hole to limit the upper connecting rod 2321. The pre-tightening elastic element 2326 is a spring, which is sleeved on the insertion part 2322 and placed between the positioning shoulder and the lower connecting rod 2324 to generate pre-compression tension. In order to monitor the pre-compression tension in real time, a pressure sensor 2327 is provided on the positioning shoulder. The pressure sensor 2327 has a ring structure, and the spring abuts against the pressure sensor 2327.

[0044] The implementation principle of this embodiment is as follows: the upper and lower parts of the connecting rod 232 are slidably connected, which improves the flexibility and adaptability of the equipment. Specifically, the setting of the pre-tightening elastic element 2326 can absorb the vibration and impact during the operation of the equipment to a certain extent, further extending the service life of the equipment. When foreign objects are stuck in the parts or the scraper frame 22, it can provide effective buffer protection. At the same time, the pressure sensor 2327 can monitor the change of elasticity of the pre-tightening elastic element 2326 in real time. When the sensing value exceeds the set value of the equipment control unit, the control unit can stop the operation of the power telescopic rod 231, thereby improving the reliability and stability of the equipment.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the technical solutions of the embodiments of this application.

Claims

1. An underwater sludge scraping device, comprising a sludge scraping device (2), a sludge discharge device (3), and a flushing device (4) disposed in a sedimentation tank (1), wherein a sludge trough (11) is provided at the bottom of the sedimentation tank (1), characterized in that: The sludge scraping device (2) includes a guide seat (21) set at the bottom of the sedimentation tank (1), and a sludge scraper (22) is slidably connected to the guide seat (21); the sludge scraper (22) is powered by a horizontal pushing mechanism (23) to perform horizontal reciprocating operation, pushing the sludge at the bottom of the sedimentation tank (1) into the mud trough (11); The sludge discharge device (3) includes an air lift pipe (31), the inlet of which extends into the sludge trough (11), and a compressed air pipe (7) is connected to the side of the air lift pipe (31). The airflow provided by the compressed air pipe (7) moves along the sludge outlet direction of the air lift pipe (31), forming a negative pressure at the inlet of the air lift pipe (31), thereby drawing the sludge into the air lift pipe (31) and discharging it. The flushing device (4) includes a flushing pipe (41), which is connected to the compressed air pipe (7). The rinsing pipe (41) is connected to the mud tank (11), and the air outlet of the rinsing pipe (41) extends into the mud tank (11) for oblique blowing and rinsing of the side wall of the mud tank (11). Several conical unit tanks (111) are arranged in the width direction in the mud tank (11), and each conical unit tank (111) is provided with an air lifting pipe (31) and a rinsing pipe (41). The bottom center of the conical unit tank (111) is provided with a protrusion (112), and the transition section between the protrusion (112) and the conical unit tank (111) is an arc-shaped structure.

2. The underwater sludge scraping device according to claim 1, characterized in that: The sludge scraper (22) includes parallel fixed rods (221), which are fixed by several tie rods (222), and the lower end of the fixed rods (221) is provided with a sludge scraper (223); the bottom of the sedimentation tank (1) is evenly distributed with several parallel sliding rails (5).

3. The underwater sludge scraping device according to claim 2, characterized in that: The scraper blade (223) is hinged to the fixed rod (221), and the scraper blade (223) is provided with a limiting block (2232), which is used to limit the deflection angle of the scraper blade (223).

4. The underwater sludge scraping device according to claim 1, characterized in that: The sludge outlet of the air lift pipe (31) is connected to the sludge discharge guide channel (6); the sludge discharge guide channel (6) is fixed on the side wall of the sedimentation tank (1), and the bottom of the sludge discharge guide channel (6) is arranged at an angle.

5. The underwater sludge scraping device according to claim 1, characterized in that: The air outlet of the flushing pipe (41) is provided with an annular pipe (42); the annular pipe (42) is evenly distributed with several air-blowing ports (421), and the annular pipe (42) is located directly above the protrusion (112).

6. The underwater sludge scraping device according to claim 1, characterized in that: The air lifting tube (31) has a flared mouth (32) at its inhalation end. The flared mouth (32) is located directly above the protrusion (112), and the diameter of the larger end of the flared mouth (32) is larger than the diameter of the protrusion (112).

7. The underwater sludge scraping device according to claim 1, characterized in that: The lateral pushing mechanism (23) includes a power telescopic rod (231), a connecting rod (232), and a crank triangular rod (233). The crank triangular rod (233) is rotatably connected to a bracket (235) located at the bottom of the side wall of the sedimentation tank (1), and the horizontal section (2331) of the crank triangular rod (233) is hinged to the connecting rod (232). The connecting rod (232) is hinged to the power telescopic rod (231), which provides power for vertical movement and drives the vertical section (2332) of the crank triangular rod (233) to move laterally. A transmission component is provided between the vertical section (2332) of the crank triangular rod (233) and the sludge scraper (22), and the transmission component drives the sludge scraper (22) to perform horizontal reciprocating motion.

8. The underwater sludge scraping device according to claim 7, characterized in that: The transmission component is a push rod (234) hinged between the vertical section (2332) of the crank triangular rod (233) and the mud scraper (22).

9. The underwater sludge scraping device according to claim 7, characterized in that: The transmission component is a pin (2333) set on the vertical section (2332) of the crank triangular rod (233), and a pulley (2334) is provided on the pin (2333); the mud scraper (22) is provided with a vertically arranged lever (2211), and a groove (2212) is provided in the lever (2211), and the pulley (2334) is slidably connected in the groove (2212).

10. The underwater sludge scraping device according to claim 7, characterized in that: The connecting rod (232) includes an upper connecting rod (2321) and a lower connecting rod (2324); the upper connecting rod (2321) is slidably connected in the lower connecting rod (2324), and a pressure sensor (2327) and a pre-tightening elastic element (2326) are provided between the lower connecting rod (2324) and the upper connecting rod (2321). The pressure sensor (2327) is used to sense the elastic force of the pre-tightening elastic element (2326).

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