A device for efficiently cleaning residue in an extraction tank

Abstract

The utility model discloses a kind of device of high-efficiency cleaning of extraction tank accumulated residue, belong to extraction tank technical field.A kind of device of high-efficiency cleaning of extraction tank accumulated residue, including extraction tank, baffle one and baffle two are fixed in extraction tank inside, the inside of extraction tank is divided into mixing chamber, clarification chamber and backflow slag discharge chamber;Clarification chamber is equipped with slag removal device inside, and slag removal device slides along clarification chamber long side direction, for the sediment residue in clarification chamber is transferred to backflow slag discharge chamber;Liquid in mixing chamber is overflowed to clarification chamber by baffle one;The sediment residue in clarification chamber is moved to backflow slag discharge chamber bottom by the slag removal channel of baffle two bottom, and is discharged by the slag discharge port of backflow slag discharge chamber bottom.

Description

Technical Field

[0001] This utility model belongs to the field of extraction box technology, and more specifically, relates to a device for efficient cleaning of sludge accumulated in an extraction box. Background Technology

[0002] An extraction chamber, also known as a mixing and clarification tank, is an extraction device that uses mechanical stirring to mix materials in one container and allows them to naturally clarify by gravity in another. It is widely used in the separation, extraction, or purification processes of rare earths, precious metals, and non-ferrous metals, and has the advantages of simple structure, flexible combination, convenient extraction process, and good operational stability.

[0003] Over time, extraction tanks accumulate sludge at the bottom due to chemical precipitation, organic degradation, and physical deposition. Current solutions typically involve manual pumping of this sludge after extraction is stopped. This method requires frequent shutdowns, reducing extraction efficiency. Furthermore, pumping also removes large amounts of organic phase and acids / alkalis used in the extraction process, resulting in high labor and material costs, strong odors, and long-term stagnation causing harm to people, property, and the environment. For example, a modified inclined tube extraction tank (CN202321878789.1) disclosed in Chinese invention patent literature modifies the inclined tube by inserting a flexible tube inside. This tube can be pulled out and periodically cleaned and replaced based on the sludge level, reducing the amount of sludge in the extraction system. However, this method still requires frequent tube replacement, increasing cleaning costs. Additionally, the sludge level inside the tube is difficult to observe, making it impossible to effectively monitor the sludge thickness and determine the optimal cleaning time.

[0004] Therefore, we need a device for efficiently cleaning the residue in the extraction tank, which is easy to operate and can monitor and automatically clean the residue in real time, thereby avoiding frequent start-up and shutdown of the extraction line, effectively saving manpower and resources, and achieving the goal of increasing efficiency and reducing costs. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a device for efficient cleaning of slag in the extraction box, which is easy to operate, runs stably, and can clean the slag in the extraction box in real time through a scraper, so as to avoid stopping the extraction process and improve the extraction efficiency.

[0006] This utility model discloses an efficient cleaning device for sludge accumulation in an extraction box, comprising an extraction box, wherein a first baffle and a second baffle are fixedly installed inside the extraction box, dividing the interior of the extraction box into a mixing chamber, a clarification chamber, and a reflux sludge discharge chamber; the clarification chamber is equipped with a sludge cleaning device that slides along the long side of the clarification chamber to transfer the precipitated sludge in the clarification chamber to the reflux sludge discharge chamber.

[0007] A baffle, whose height is lower than the depth of the extraction chamber, is used to allow liquid inside the mixing chamber to overflow into the clarification chamber.

[0008] The bottom of the second baffle has a slag discharge channel for passing the sediment slag in the clarification chamber.

[0009] The bottom of the reflux slag discharge chamber has a slag discharge port for discharging the sediment slag transferred from the clarification chamber.

[0010] As a further improvement of this utility model, the mixing chamber is equipped with a stirring motor and a stirring device. The stirring motor is detachably installed on the top of the mixing chamber, and the stirring device is located inside the mixing chamber. The output shaft of the stirring motor is detachably connected to the stirring device to drive the stirring device to mix the liquid phase and the organic phase evenly.

[0011] As a further improvement of this utility model, the slag removal device includes a support frame, a drive motor, a lead screw, a slag scraping assembly, a pair of guide rails, and a lead screw support. The support frame is mounted on the top of the clarification chamber. The drive motor is detachably installed on the side of the support frame near the mixing chamber. The pair of guide rails are located on both sides of the drive motor, and both ends of the guide rails are detachably connected to the support frame. The output shaft of the drive motor is detachably connected to one end of the lead screw. The lead screw support is fixedly installed on the side of the support frame away from the drive motor, and the other end of the lead screw is rotatably connected to the center hole of the lead screw support. The slag scraping assembly is threadedly connected to the lead screw and slidably connected to the guide rails. The drive motor drives the lead screw to rotate, causing the slag scraping assembly to slide along the guide rails, efficiently scraping away the precipitated slag.

[0012] As a further improvement of this utility model, the slag scraping assembly includes a guide block, a pair of scraper connecting rods, a composite scraper, and a connecting mechanism; the composite scraper is slidably connected to the bottom surface inside the clarification chamber; the upper part of the scraper connecting rod is fixedly connected to the guide block, and the lower part is fixedly connected to the connecting mechanism; the upper part of the composite scraper is hinged to the connecting mechanism; the guide block is provided with a threaded hole that matches the thread of the lead screw, and the guide block is threadedly connected to the lead screw; a pair of sliding holes that match the cross-section of the guide rail are provided on both sides of the threaded hole of the guide block, and the guide block is slidably connected to the guide rail to ensure the stability of the sliding of the guide block.

[0013] As a further improvement of this utility model, the composite scraper includes a main scraper, an auxiliary scraper, and a hinged cylinder. The hinged cylinder is located above the main scraper and the auxiliary scraper and is fixedly connected to the top of the main scraper and the top of the auxiliary scraper. The main scraper is inclined and has several guide holes on its surface to reduce the resistance during the scraping process. At the same time, it enriches the smaller slag deposits in the area between the main scraper and the auxiliary scraper, preventing the smaller slag deposits from being resuspended under the thrust of the composite scraper, thereby improving the slag removal effect. The auxiliary scraper is vertically arranged behind the main scraper to remove the slag deposits in the blind spot of the main scraper, thereby improving the comprehensiveness of slag removal. The hinged cylinder is hinged to the connecting mechanism to make the composite scraper tilt after reaching the slag discharge port, preventing the slag at the bottom of the clarification chamber from being scraped back during the return stroke.

[0014] As a further improvement of this utility model, a circular groove is opened inside the hinged cylinder to be hinged to the connecting mechanism, and a pair of toothed adjusting parts are provided on the outer periphery of the hinged cylinder. The toothed adjusting parts are made of corrosion-resistant material and are meshed with the connecting mechanism. Thus, the toothed adjusting parts are rotated by the connecting mechanism to achieve the purpose of tilting the composite scraper after it reaches the slag discharge port.

[0015] As a further improvement of this utility model, the connecting mechanism is provided with a hinge rod inside for hinged connection with the composite scraper; the upper part of the connecting mechanism is provided with a pair of adjusting grooves, and the adjusting grooves are provided with adjusting tooth plates inside, the adjusting tooth plates are slidably connected to the adjusting grooves; a ball is provided on the side of the adjusting tooth plate near the reflux slag discharge chamber, and a pair of ball grooves that fit with the ball are provided at the top of the adjusting groove for limiting the position of the adjusting tooth plate; the side of the adjusting tooth plate near the reflux slag discharge chamber extends outward, so that after contacting the second baffle, the adjusting tooth plate slides towards the first baffle, thereby driving the composite scraper to rotate; the first baffle is provided with a pair of trigger blocks that match the adjusting tooth plate, so that after the slag cleaning device returns to the position of the first baffle, it contacts the adjusting tooth plate and slides towards the second baffle, thereby driving the composite scraper to reset.

[0016] As a further improvement of this utility model, the reflux slag discharge chamber is provided with an aqueous phase reflux device and an organic phase reflux device. The aqueous phase reflux device and the organic phase reflux device are detachably installed on the wall of the reflux slag discharge chamber, and are used to reflux the aqueous phase and the organic phase back to the mixing chamber respectively.

[0017] As a further improvement of this utility model, the top of the water phase reflux device is provided with a water phase reflux port for connecting to the pipeline to transport the water phase; the bottom of the water phase reflux device is provided with a water phase adjustment port for adjusting the position of the water phase adjustment port according to the depth of the water phase.

[0018] As a further improvement of this utility model, the top of the organic phase reflux device is provided with an organic phase reflux port for connecting the pipeline to transport the organic phase; the bottom of the organic phase reflux device is provided with an organic phase adjustment port for adjusting the position of the organic phase adjustment port according to the depth of the organic phase.

[0019] Compared with existing technologies, the advantages of this invention are as follows: By utilizing a slag removal device for efficient real-time slag removal inside the clarification chamber of the extraction tank, frequent start-up and shutdown of the extraction line can be avoided, thereby improving extraction efficiency. Simultaneously, by reducing residual impurities in real time, the loss of organic and acid / alkali extracts can be reduced, achieving cost reduction and efficiency improvement. By setting the slag scraping assembly to move along the guide rail, the slag scraping process is ensured to be stable and efficient, reducing equipment wear and extending service life. By setting a composite scraper integrating the main scraper and the auxiliary scraper, slag accumulation in different areas is effectively removed, improving the comprehensiveness of slag removal. By setting guide holes on the surface of the main scraper, scraping resistance is reduced, and small slag accumulations are concentrated between the main and auxiliary scrapers, preventing small slag accumulations from re-suspending and improving slag removal efficiency. By setting a connecting mechanism to control the hinged cylinder to drive the composite scraper to rotate, the composite scraper can tilt after reaching the slag discharge port, preventing the slag at the bottom of the clarification chamber from being scraped back during the return stroke, improving the slag removal effect. By setting aqueous phase adjustment ports and organic phase adjustment ports, the reflux depth of different phases can be adjusted in real time, ensuring precise separation of the aqueous and organic phases. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the cross-sectional structure of this utility model;

[0022] Figure 3 This is a schematic diagram of the cross-sectional structure of the slag scraper assembly of this utility model;

[0023] Figure 4 This is an enlarged schematic diagram of the structure at point A of this utility model;

[0024] Figure 5 This is a schematic diagram of the hinged cylinder structure of this utility model;

[0025] Figure 6 This is a schematic diagram of the reflux slag discharge chamber structure of this utility model.

[0026] Explanation of the labels in the diagram:

[0027] 1 Mixing chamber, 11 Stirring motor, 12 Stirring device, 2 Clarification chamber, 3 Reflux slag discharge chamber, 31 Aqueous phase reflux device, 311 Aqueous phase reflux port, 312 Aqueous phase regulating port, 32 Organic phase reflux device, 321 Organic phase reflux port, 322 Organic phase regulating port, 4 Slag cleaning device, 41 Support frame, 42 Drive motor, 43 Lead screw, 44 Slag scraper assembly, 441 Guide block, 442 Scraper connecting rod, 443 Composite Scraper, 444 threaded hole, 445 sliding hole, 446 main scraper, 447 auxiliary scraper, 448 guide hole, 45 guide rail, 46 screw support, 47 connecting mechanism, 471 hinge rod, 472 adjusting groove, 473 adjusting toothed plate, 474 ball bearing, 475 ball bearing groove, 48 hinged cylinder, 481 round groove, 482 toothed adjusting component, 5 slag discharge port, 6 baffle one, 61 trigger component, 7 baffle two, 71 slag discharge channel. Detailed Implementation

[0028] Specific Implementation Example 1: Please refer to Figures 1-4 An efficient device for cleaning sludge from an extraction box includes an extraction box. Inside the extraction box, baffle 6 and baffle 7 are fixedly installed, dividing the interior of the extraction box into a mixing chamber 1, a clarification chamber 2, and a reflux sludge discharge chamber 3. Inside the clarification chamber 2, a sludge cleaning device 4 is installed. The sludge cleaning device 4 slides along the long side of the clarification chamber 2 to transfer the precipitated sludge in the clarification chamber 2 to the reflux sludge discharge chamber 3.

[0029] Baffle 6 is positioned below the depth of the extraction chamber to allow liquid inside the mixing chamber to overflow into the clarification chamber.

[0030] The bottom of the baffle 2 7 has a slag discharge channel 71 for passing the sediment slag in the clarification chamber 2.

[0031] The bottom of the reflux slag discharge chamber 3 has a slag discharge port 5, which is used to discharge the sediment slag transferred from the clarification chamber 2.

[0032] Specifically, such as Figure 2 The mixing chamber 1 shown is equipped with a stirring motor 11 and a stirring device 12. The stirring motor 11 is detachably installed on the top of the mixing chamber 1, and the stirring device 12 is located inside the mixing chamber 1. The output shaft of the stirring motor 11 is detachably connected to the stirring device 12, which is used to drive the stirring device 12 to mix the liquid phase and organic phase inside the mixing chamber 1 evenly, thereby effectively extracting the target substance and improving the separation efficiency.

[0033] Specifically, the slag removal device 4 includes a support frame 41, a drive motor 42, a lead screw 43, a slag scraping assembly 44, a pair of guide rails 45, and a lead screw support 46. The support frame 41 is mounted on the top of the clarification chamber 2. The drive motor 42 is detachably installed on the side of the support frame 41 near the mixing chamber 1. The pair of guide rails 45 are located on both sides of the drive motor 42, and both ends of the guide rails 45 are detachably connected to the support frame 41. The output shaft of the drive motor 42 is detachably connected to one end of the lead screw 43. The lead screw support 46 is fixedly installed on the side of the support frame 41 away from the drive motor 42. The other end of the lead screw 43 is rotatably connected to the center hole of the lead screw support 46. The slag scraping assembly 44 is threadedly connected to the lead screw 43 and slidably connected to the guide rails 45. The drive motor 42 drives the lead screw 43 to rotate, causing the slag scraping assembly 44 to slide along the guide rails 45, effectively scraping away the sediment slag inside the clarification chamber 2.

[0034] Specifically, such as Figure 3 The slag scraping assembly 44 shown includes a guide block 441, a pair of scraper connecting rods 442, a composite scraper 443, and a connecting mechanism 47. The composite scraper 443 is slidably connected to the bottom surface inside the clarifier 2. The upper part of the scraper connecting rod 442 is fixedly connected to the guide block 441, and the lower part is fixedly connected to the connecting mechanism 47. The upper part of the composite scraper 443 is hinged to the connecting mechanism 47. The composite scraper 443 is slidably connected to the bottom surface inside the clarifier 2, and the upper part of the composite scraper 443 is fixedly connected to the guide block 441 through a pair of scraper connecting rods 442. The guide block 441 is provided with a threaded hole 444 that fits the thread of the lead screw 43, and the guide block 441 is threadedly connected to the lead screw 43. On both sides of the threaded hole 444 of the guide block 441, there is a pair of sliding holes 445 that fit the cross section of the guide rail 45, and the guide block 441 is slidably connected to the guide rail 45 to ensure the stability of the sliding of the guide block 441, thereby improving the slag scraping effect.

[0035] Specifically, the composite scraper 443 includes a main scraper 446, an auxiliary scraper 447, and a hinged cylinder 48. The hinged cylinder 48 is located above the main scraper 446 and the auxiliary scraper 447, and is fixedly connected to the top of the main scraper 446 and the top of the auxiliary scraper 447. The main scraper 446 is inclined, and its surface is provided with several guide holes 448 to reduce the resistance during the scraping process. At the same time, it enriches smaller slag deposits in the area between the main scraper 446 and the auxiliary scraper 447, preventing smaller slag deposits from accumulating on the composite scraper. 443 is resuspended under the thrust, thereby improving the slag removal efficiency; the top of the main scraper 446 and the top of the auxiliary scraper 447 are fixedly connected; the main scraper 446 is inclined to improve the slag removal effect; the auxiliary scraper 447 is vertically arranged at the rear of the main scraper 446 to remove the accumulated slag in the blind spot of the main scraper 446 and improve the comprehensiveness of slag removal; the hinged cylinder 48 is hinged to the connecting mechanism 47 to make the composite scraper 443 tilt after reaching the slag discharge port 5, so as to avoid scraping the slag at the bottom of the clarification chamber 2 back during the return stroke.

[0036] Specifically, the hinged cylinder 48 has a circular groove 481 inside that is hinged to the connecting mechanism 47. The hinged cylinder 48 has a pair of toothed adjusting members 482 on its outer periphery. The toothed adjusting members 482 are made of corrosion-resistant material and are meshed with the connecting mechanism 47. The toothed adjusting members 482 are rotated by the adjusting toothed plate 473 of the connecting mechanism 47 through toothed meshing, so that the composite scraper 443 tilts after reaching the slag discharge port 5.

[0037] Specifically, the connecting mechanism 47 has a hinge rod 471 inside, which is used to hinge with the circular groove 481 of the composite scraper; the upper part of the connecting mechanism 47 has a pair of adjusting grooves 472, and the adjusting toothed plate 473 inside the adjusting groove 472 is slidably connected to the adjusting groove 472; a ball 474 is provided on the side of the adjusting toothed plate 473 near the reflux slag discharge chamber 3, and a pair of ball grooves 475 that fit with the ball 474 are provided on the top of the adjusting groove 472, which are used to limit the adjusting toothed plate 473, so that the adjusting toothed plate 473 locks after reaching the first baffle 6 and the second baffle 7 respectively; the adjusting toothed plate 473 is close to One side of the reflux slag discharge chamber 3 protrudes outward, which is used to abut against the second baffle 7 and cause the adjusting toothed plate 473 to slide towards the first baffle 6, thereby driving the composite scraper 443 to rotate. The first baffle 6 is provided with a pair of trigger blocks 61 that match the adjusting toothed plate 473. After the slag removal device 4 returns to the position of the first baffle 6, it abuts against the adjusting toothed plate 473 and slides towards the second baffle 7, thereby driving the composite scraper 443 to reset. This achieves the goal of keeping the composite scraper 443 vertical during the slag removal process and adjusting the composite scraper 443 to maintain its tilt direction during the reset process after slag removal, thus achieving a better slag removal effect.

[0038] Specifically, such as Figure 4 The reflux slag discharge chamber 3 shown is equipped with an aqueous phase reflux device 31 and an organic phase reflux device 32. The aqueous phase reflux device 31 and the organic phase reflux device 32 are detachably installed on the wall of the reflux slag discharge chamber 3, and are used to reflux the aqueous phase and the organic phase back to the mixing chamber 1 respectively.

[0039] Specifically, the top of the water phase reflux device 31 is provided with a water phase reflux port 311 for connecting to the pipeline to transport the water phase; the bottom of the water phase reflux device 31 is provided with a water phase adjustment port 312 for adjusting the position of the water phase adjustment port 312 according to the depth of the water phase, thereby ensuring that the water phase and organic phase of different components are fully separated.

[0040] Specifically, the top of the organic phase reflux device 32 is provided with an organic phase reflux port 321 for connecting to the pipeline to transport the organic phase; the bottom of the organic phase reflux device 32 is provided with an organic phase adjustment port 322 for adjusting the position of the organic phase adjustment port 322 according to the depth of the organic phase, thereby ensuring that the organic phase of different components is fully separated from the aqueous phase.

[0041] During use, the aqueous phase containing the target product and the organic phase containing the extractant are added together to the mixing chamber 1. The stirring motor 11 is turned on to control the stirring device 12 to mix the aqueous and organic phases evenly. After the liquid in the mixing chamber 1 reaches the top of the baffle 6, the evenly mixed liquid in the mixing chamber 1 overflows into the clarification chamber 2. As the liquid continues to flow into the clarification chamber 2, the impurities in the liquid settle to the bottom of the clarification chamber 2, forming a slag layer. At this time, the drive motor 42 is turned on to control the lead screw 43 to rotate, thereby driving the guide block 441 to slide along the guide rail 45. The composite scraper 443 moves accordingly. The main scraper 446 and the auxiliary scraper 447 work together to efficiently scrape off the slag layer and transport it to the slag discharge port 5. At this time, the adjusting toothed plate 473 abuts against the baffle 7, so that the adjusting toothed plate 473 slides in the direction of the baffle 6. At this time, the gears... The meshing drive causes the toothed adjusting component 482 to rotate, causing the composite scraper 443 to tilt at the slag discharge port 5. At this time, the composite scraper 443 does not contact the bottom surface of the clarification chamber 2, preventing the material slag at the bottom of the clarification chamber 2 from being carried back to the baffle 6 during the reset process of the composite scraper 443. After the composite scraper 443 reaches the position of the baffle 6, the adjusting toothed plate 473 will slide towards the baffle 7 after contacting the trigger component 61. At this time, the gear meshing drives the toothed adjusting component 482 to rotate, so that the composite scraper 443 reaches the position of the baffle 6 and is vertical and in contact with the bottom of the clarification chamber 2. At the same time, by adjusting the height of the aqueous phase adjusting port 312 and the organic phase adjusting port 322, the aqueous phase and the organic phase are returned to the mixing chamber 1 under the action of the aqueous phase reflux device 31 and the organic phase reflux device 32, respectively, to achieve the purpose of saving manpower and material resources and increasing efficiency and reducing costs.

[0042] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. A device for efficient cleaning of residue accumulated in an extraction tank, comprising an extraction tank, characterized in that: The extraction box is fixedly equipped with baffle one (6) and baffle two (7) to divide the extraction box into a mixing chamber (1), a clarification chamber (2) and a reflux slag discharge chamber (3); the clarification chamber (2) is equipped with a slag cleaning device (4) to transfer the precipitated slag in the clarification chamber (2) to the reflux slag discharge chamber (3). The height of baffle 1 (6) is lower than the depth of the extraction chamber, and is used to overflow the liquid inside the mixing chamber (1) into the clarification chamber (2). The bottom of the baffle (7) has a slag discharge channel (71) for passing the sediment slag in the clarification chamber (2); The bottom of the reflux slag discharge chamber (3) has a slag discharge port (5) for discharging the sediment slag transferred from the clarification chamber (2).

2. The device for efficient cleaning of slag accumulation in an extraction tank according to claim 1, characterized in that, The mixing chamber (1) is equipped with a stirring motor (11) and a stirring device (12). The stirring motor (11) is detachably installed on the top of the mixing chamber (1), and the stirring device (12) is located inside the mixing chamber (1). The output shaft of the stirring motor (11) is detachably connected to the stirring device (12) to drive the stirring device (12) to mix the liquid phase and the organic phase evenly.

3. The device for efficient cleaning of sludge in an extraction tank according to claim 1, characterized in that, The slag removal device (4) includes a support frame (41), a drive motor (42), a lead screw (43), a slag scraping assembly (44), a pair of guide rails (45), and a lead screw support (46). The support frame (41) is mounted on the top of the clarification chamber (2). The drive motor (42) is detachably installed on the side of the support frame (41) near the mixing chamber (1). The pair of guide rails (45) are located on both sides of the drive motor (42). The two ends of the guide rails (45) are detachably connected to the support frame (41). The output shaft of the drive motor (42) is detachably connected to one end of the lead screw (43). The lead screw support (46) is fixedly installed on the side of the support frame (41) away from the drive motor (42). The other end of the lead screw (43) is rotatably connected to the center hole of the lead screw support (46). The slag scraping assembly (44) is threadedly connected to the lead screw (43). The slag scraping assembly (44) is slidably connected to the guide rail (45) and is used to make the slag scraping assembly (44) slide along the guide rail (45) after the drive motor (42) is turned on.

4. The device for efficient cleaning of sludge in an extraction tank according to claim 3, characterized in that, The slag scraping assembly (44) includes a guide block (441), a pair of scraper connecting rods (442), a composite scraper (443), and a connecting mechanism (47); the composite scraper (443) is slidably connected to the bottom surface inside the clarification chamber (2); the upper part of the scraper connecting rod (442) is fixedly connected to the guide block (441), and the lower part is fixedly connected to the connecting mechanism (47); the upper part of the composite scraper (443) is hinged to the connecting mechanism (47); the guide block (441) is provided with a threaded hole (444) that fits the thread of the lead screw (43), and the guide block (441) is threadedly connected to the lead screw (43); the guide block (441) has a pair of sliding holes (445) on both sides of the threaded hole (444) that fit the cross section of the guide rail (45), and the guide block (441) is slidably connected to the guide rail (45).

5. The device for efficient cleaning of sludge in an extraction tank according to claim 4, characterized in that, The composite scraper (443) includes a main scraper (446), a secondary scraper (447), and a hinged cylinder (48). The hinged cylinder (48) is located above the main scraper (446) and the secondary scraper (447) and is fixedly connected to the top of the main scraper (446) and the top of the secondary scraper (447). The main scraper (446) is inclined and has several guide holes (448) on its surface to reduce the resistance during the scraping process and improve the slag removal effect. The secondary scraper (447) is vertically arranged behind the main scraper (446) to remove the slag accumulation in the slag removal blind area of ​​the main scraper (446). The hinged cylinder (48) is hinged to the connecting mechanism (47) to make the composite scraper (443) tilt after reaching the slag discharge port to avoid scraping the bottom slag of the clarification chamber (2) back during the return trip.

6. The apparatus for efficient cleaning of sludge in an extraction tank according to claim 5, characterized in that, The hinge cylinder (48) has a circular groove (481) inside that is hinged to the connecting mechanism (47). The hinge cylinder (48) has a pair of toothed adjusting members (482) on its outer periphery. The toothed adjusting members (482) are made of corrosion-resistant material and are engaged with the connecting mechanism (47).

7. The device for efficient cleaning of sludge in an extraction tank according to claim 4, characterized in that, The connecting mechanism (47) is provided with a hinge rod (471) for hinge connection with the composite scraper (443); the upper part of the connecting mechanism (47) is provided with a pair of adjusting grooves (472), and the adjusting grooves (472) are provided with adjusting toothed plates (473) inside, and the adjusting toothed plates (473) are slidably connected with the adjusting grooves (472); the adjusting toothed plates (473) are provided with ball bearings (475) on the side near the reflux slag discharge chamber (3), and the top of the adjusting grooves (472) is provided with a pair of ball bearing grooves (476) that fit with the ball bearings (475) for adjustment. The toothed plate (473) is limited; the toothed plate (473) protrudes outward on the side near the reflux slag discharge chamber (3) to slide towards the baffle (6) after contacting the second baffle (7), thereby driving the composite scraper (443) to rotate; the first baffle (6) is provided with a pair of trigger blocks (61) that match the toothed plate (473), which are used to contact the toothed plate (473) after the slag removal device (4) returns to the position of the first baffle (6) to slide towards the second baffle (7), thereby driving the composite scraper (443) to reset.

8. The apparatus for efficient cleaning of sludge in an extraction tank according to claim 1, characterized in that, The reflux slag discharge chamber (3) is equipped with an aqueous phase reflux device (31) and an organic phase reflux device (32). The aqueous phase reflux device (31) and the organic phase reflux device (32) are respectively detachably installed on the wall of the reflux slag discharge chamber (3) to reflux the aqueous phase and the organic phase back to the mixing chamber (1).

9. The device for efficient cleaning of sludge in an extraction tank according to claim 8, characterized in that: The water phase reflux device (31) is provided with a water phase reflux port (311) at the top for connecting the pipeline to transport the water phase; the water phase reflux device (31) is provided with a water phase adjustment port (312) at the bottom for adjusting the position of the water phase adjustment port (312) according to the depth of the water phase.

10. The apparatus for efficient cleaning of sludge in an extraction tank according to claim 8, characterized in that: The organic phase reflux device (32) is provided with an organic phase reflux port (321) at the top for connecting the pipeline to transport the organic phase; the organic phase reflux device (32) is provided with an organic phase adjustment port (322) at the bottom for adjusting the position of the organic phase adjustment port (322) according to the depth of the organic phase.

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