A pickling waste liquid filtering device

Abstract

The application relates to the technical field of filtering equipment, and discloses a pickling waste liquid filtering device, which comprises a filtering mechanism, a filter plate is arranged in the filtering mechanism, a cleaning mechanism is arranged at the top of the filter plate, driving mechanisms are arranged at the two sides of the cleaning mechanism, storage mechanisms are arranged at the two sides of the filter plate, and the pickling waste liquid filtering device has the advantages that the sliding block drives the slag scraping plate to reciprocate on the filter plate through the moving plate, so that the impurities on the filter plate can be scraped off; in the process of moving the slag scraping plate, the motor two also drives the rotating disc to rotate, the rotating disc drives the moving plate on the sliding block to reciprocate on the slag scraping plate through the hinged arm, when the moving plate moves in the direction opposite to the scraping direction, the slag scraping plate can be moved backward, the slag scraping plate can scrape the filter plate for multiple times in the scraping direction, the scraping effect is further improved, the filter plate can be cleaned while being filtered, and the filtering efficiency is not affected.

Description

Technical Field

[0001] This invention relates to the field of filtration equipment technology, and more specifically to a filtration device for pickling waste liquid. Background Technology

[0002] Pickling wastewater is generated during the pickling process, which removes oxides from metal surfaces using acids such as sulfuric acid, nitric acid, hydrochloric acid, hydrofluoric acid, and phosphoric acid. This wastewater primarily originates from steel mills or electroplating plants, typically with a pH below 1.5 (0.5-2% free acid), making it highly acidic. This wastewater also contains large amounts of heavy metal ions, acidic and alkaline substances, and harmful chemicals, posing a serious threat to the environment and human health. Therefore, the treatment of pickling wastewater has become an important issue in environmental protection. The main purpose of pickling wastewater treatment is to remove harmful substances, including heavy metal ions, acidic and alkaline substances, and harmful chemicals. The treatment principles mainly include chemical precipitation, adsorption, electrolysis, and biological methods. These methods remove harmful substances from the wastewater through different principles, thereby purifying the wastewater. Before treating the pickling wastewater, a filtration device is needed to filter out larger impurities to separate solid impurities, reducing the burden on subsequent treatment processes.

[0003] Chinese patent application CN119771048A discloses a wastewater filtration treatment device, which includes a filter box. The top of the filter box is provided with an inlet pipe, the bottom of the filter box is provided with an outlet pipe, and the bottom of the filter box is fixedly connected to a base. Several filter screens are fixedly connected inside the filter box, and the top of the filter screens contacts a cleaning plate. The filter box is equipped with a push mechanism for moving the several cleaning plates. Several cleaning holes adapted to the cleaning plates are opened on the inner wall of the filter box. Several fixed boxes are fixedly connected to the outer wall of the filter box, and the number of fixed boxes, cleaning holes and cleaning plates is the same. Movable seats are slidably provided inside the fixed boxes, and the ends of the movable seats are located in the corresponding cleaning holes. Impurity outlet holes are opened on the bottom inner wall of the fixed boxes.

[0004] However, the structural design of the aforementioned technologies, while capable of cleaning solid impurities on the filter screen, requires stopping the addition of waste liquid to the filter cartridge before cleaning can proceed. This means that cleaning the filter screen and filtering the waste liquid cannot be carried out simultaneously, resulting in low efficiency in separating the solid-liquid mixture.

[0005] Therefore, a pickling waste liquid filtration device is proposed to solve the problems mentioned above. Summary of the Invention

[0006] This invention provides a pickling waste liquid filtration device, which aims to solve the problem in related technologies where it is inconvenient to clean the filter screen and filter the waste liquid at the same time.

[0007] The pickling waste liquid filtration device of the present invention includes a filtration mechanism, which has a filter plate, a cleaning mechanism on the top of the filter plate, a driving mechanism on both sides of the cleaning mechanism, and a storage mechanism on both sides of the filter plate. The cleaning mechanism can directly push the scraped impurities into the storage mechanism.

[0008] The cleaning mechanism includes a movable plate disposed between two drive mechanisms and a scraper plate slidably connected to the bottom of the movable plate. The movable plate can drive the scraper plate to scrape off the impurities filtered out by the filtration mechanism.

[0009] The drive mechanism includes a sliding assembly that is reciprocated and slidably mounted on the filter mechanism; the sliding assembly includes a second motor mounted on one side of the filter mechanism, a turntable mounted on the second motor, a hinge arm hinged on the turntable, and a sliding block hinged to the hinge arm, the sliding block being mounted on a moving plate.

[0010] During wastewater filtration, the wastewater is fed into the filtration mechanism. After being filtered by the filter plate, the wastewater is discharged. During the filtration process, motor 2 reciprocates on the filtration mechanism. At the same time, motor 2 drives the turntable to move. The turntable, through the hinge arm, drives the sliding block to reciprocate on the filtration mechanism. Simultaneously, the sliding block, through the moving plate, drives the scraper plate to reciprocate on the filter plate to remove impurities. During the movement of the scraper plate, motor 2 also drives the turntable to rotate. The turntable, through the hinge arm, drives the moving plate on the sliding block to slide back and forth on the scraper plate. When the moving plate moves in the opposite direction of the scraping direction, it can drive the scraper plate to move backward, so that the scraper plate can scrape the filter plate multiple times in the scraping direction to further improve the scraping effect. When the scraper plate moves to the edge of the filter plate, it can push the scraped impurities into the storage mechanism for centralized storage.

[0011] Preferably, the storage mechanism includes a squeezing assembly and a discharge assembly. The squeezing assembly is rotatably connected to the inside of the filtering mechanism and in contact with the filter plate. The discharge assembly is disposed at the bottom of one side of the squeezing assembly.

[0012] When the scraper plate moves to the edge of the filter plate, it can push the scraped impurities toward the extrusion assembly, so that the extrusion assembly moves along the extrusion assembly to the unloading assembly for storage.

[0013] Preferably, the extrusion assembly includes an extrusion plate, rotating rods mounted on the bottom of both sides of the extrusion plate, and elastic members sleeved on the rotating rods. The elastic members are installed between the inner wall of the filter mechanism and the extrusion plate. The extrusion plate is inclinedly disposed on one side inside the filter mechanism, and the top of the extrusion plate and the top of the filter plate are located on the same horizontal plane.

[0014] The extrusion plate can rotate around the rotating rod. When the extrusion plate is squeezed and rotates, the elastic element is compressed and stores energy. When the extrusion plate loses the extrusion force, the elastic element releases the stored energy and drives the extrusion plate to reset.

[0015] Preferably, the extrusion assembly further includes two extension blocks mounted on both sides of the top of the extrusion plate, and the tops of the two extension blocks are both arc-shaped.

[0016] When the scraper plate moves to the edge of the filter plate, the two extension blocks on the extrusion plate can drive the extrusion plate to rotate around the rotating rod. At this time, the elastic element is compressed, thereby squeezing the collected impurities and squeezing out the liquid mixed in the impurities. When the scraper plate moves towards the center of the filter plate, the elastic force of the elastic element can drive the extrusion plate to reset, so as to guide the impurities to fall onto the unloading assembly.

[0017] Preferably, the cleaning mechanism further includes four sets of protrusions and four limiting blocks. The four sets of protrusions are all arc-shaped and are respectively installed on the two sides of the moving plate. The four limiting blocks are respectively installed at the top four corners of the scraper plate.

[0018] During the process of squeezing out impurities, the extension block on the extrusion plate will contact multiple protrusions on the moving plate in sequence. As the extension block contacts multiple protrusions in sequence, it can cause the extrusion plate to vibrate continuously. When the extrusion plate is reset, the multiple protrusions on the moving plate can cause the extrusion plate to vibrate again, thereby shaking off the impurities stuck to the extrusion plate.

[0019] Preferably, the unloading assembly includes a partition and a hydraulic cylinder. The partition is disposed on the bottom side of the extrusion plate and is rotatably connected to the filtering mechanism. The movable end of the hydraulic cylinder is hinged to the bottom of the partition, and the fixed end of the hydraulic cylinder is hinged to the filtering mechanism. The filtering mechanism has a groove for accommodating the partition.

[0020] When it is necessary to discharge the collected impurities from the filter mechanism, the hydraulic cylinder can drive the baffle to rotate. At this time, the baffle flips downward under the drive of the hydraulic cylinder, thereby opening one side of the bottom of the filter mechanism to discharge the collected impurities from the filter mechanism.

[0021] Preferably, the drive mechanism further includes a drive assembly, a lead screw, and a slide bar, wherein the lead screw and the slide bar are both mounted on the drive assembly.

[0022] Preferably, the drive assembly includes a motor and two mounting plates, the two mounting plates are respectively mounted on both sides of the filter mechanism, the lead screw is rotatably connected between the two mounting plates, the slide rod is mounted between the two mounting plates, and the motor is mounted on one side of one of the mounting plates and connected to the lead screw.

[0023] Preferably, the sliding assembly further includes a movable plate and two connecting blocks, the two connecting blocks being respectively installed on the bottom sides of the movable plate, one of the connecting blocks being threadedly connected to a lead screw, and the other connecting block being slidably connected to a slide rod, and the second motor being installed on the top of the movable plate.

[0024] When motor one drives the lead screw to rotate, the lead screw can drive the movable plate to slide back and forth along the length of the lead screw through the connecting block, thereby driving motor two to slide back and forth, which in turn can drive the scraper plate to slide back and forth on the filter plate.

[0025] Preferably, the filtering mechanism has a groove for the sliding block to slide, and two fixed plates are installed on one side of the sliding block, with the movable plate installed between the two fixed plates.

[0026] The beneficial effects of the present invention, achieved by adopting the above technical solution, are as follows: During the wastewater filtration process, motor 2 reciprocates on the filtration mechanism. At this time, motor 2 drives the turntable to move, and the turntable drives the sliding block to reciprocate on the filtration mechanism via the hinge arm. Simultaneously, the sliding block drives the scraper plate to reciprocate on the filter plate via the moving plate to scrape off impurities on the filter plate. During the movement of the scraper plate, motor 2 also drives the turntable to rotate, and the turntable drives the moving plate on the sliding block to slide back and forth on the scraper plate via the hinge arm. When the moving plate moves in the opposite direction to the scraping direction, it can drive the scraper plate to move backward, so that the scraper plate can scrape the filter plate multiple times in the scraping direction to further improve the scraping effect. When the scraper plate moves to the edge of the filter plate, it can push the scraped impurities into the storage mechanism for centralized storage, thereby achieving the effect of cleaning the filter plate while filtering and avoiding affecting the filtration efficiency. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of a specific embodiment of the present invention.

[0028] Figure 2 This is a cross-sectional structural diagram of the filter chamber in a specific embodiment of the present invention.

[0029] Figure 3 This is a schematic diagram of the cleaning mechanism in a specific embodiment of the present invention.

[0030] Figure 4 This is a schematic diagram of the structure of the movable plate in a specific embodiment of the present invention.

[0031] Figure 5 Specific embodiments of the present invention Figure 4 A magnified structural diagram of point A in the middle.

[0032] Figure 6 This is a partial structural diagram of the slag scraper in a specific embodiment of the present invention.

[0033] Figure 7 This is an exploded structural diagram of the sliding component in a specific embodiment of the present invention.

[0034] Figure 8 This is a schematic diagram of the extrusion assembly structure in a specific embodiment of the present invention.

[0035] Figure 9 This is a schematic diagram of the unloading assembly in a specific embodiment of the present invention.

[0036] Figure label:

[0037] 10. Filtration mechanism; 11. Filtration chamber; 12. Liquid outlet hopper; 13. Support leg; 14. Filter plate; 15. Slide chute; 16. Liquid inlet pipe;

[0038] 20. Cleaning mechanism; 21. Moving plate; 22. Protrusion; 23. Groove; 24. Scraper; 25. Sliding strip; 26. Limiting block;

[0039] 30. Drive mechanism; 31. Drive assembly; 311. Mounting plate; 312. Motor 1; 32. Sliding assembly; 321. Movable plate; 322. Connecting block; 323. Motor 2; 324. Turntable; 325. Hinge shaft 1; 326. Hinge arm; 327. Sliding block; 328. Hinge shaft 2; 329. Fixed plate; 33. Lead screw; 34. Slide rod;

[0040] 40. Storage mechanism; 41. Extrusion assembly; 411. Extrusion plate; 412. Extension block; 413. Rotating rod; 414. Elastic element; 415. Limiting plate; 42. Unloading assembly; 421. Partition plate; 422. Hinge seat one; 423. Hydraulic cylinder; 424. Hinge seat two. Detailed Implementation

[0041] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0042] like Figures 1 to 9As shown, the pickling waste liquid filtration device of the present invention includes a filtration mechanism 10, a cleaning mechanism 20, a driving mechanism 30, and a storage mechanism 40. The cleaning mechanism 20 is slidably disposed inside the filtration mechanism 10 to clean the filtered impurities. There are two driving mechanisms 30, each disposed on the top of one side of the filtration mechanism 10. Both driving mechanisms 30 are connected to the cleaning mechanism 20 to drive the cleaning mechanism 20 to move within the filtration mechanism 10. There are two storage mechanisms 40, each disposed on one side of the interior of the filtration mechanism 10 to collect the cleaned impurities.

[0043] During the wastewater filtration process, the two drive mechanisms 30 jointly drive the cleaning mechanism 20 to reciprocate within the filtration mechanism 10. During this reciprocating motion, the cleaning mechanism 20 gradually scrapes various impurities intercepted and filtered by the filtration mechanism 10 into the storage mechanism 40 for storage. As the cleaning mechanism 20 moves towards the interior of the filtration mechanism 10, it can also push the storage mechanism 40 to fold, causing the storage mechanism 40 to squeeze the collected impurities and expel the water from them.

[0044] like Figures 1 to 2 As shown, the filtration mechanism 10 includes a filter chamber 11, an outlet hopper 12, support legs 13, a filter plate 14, and an inlet pipe 16. The top of the outlet hopper 12 is installed at the bottom of the filter chamber 11, and the filter chamber 11 is connected to the outlet hopper 12, which guides the filtered wastewater out of the filter chamber 11. There are four support legs 13, which are installed at the four corners of the bottom of the filter chamber 11 to support it. The filter plate 14 is located inside the filter chamber 11, and its two sides are installed at the middle of the inner wall of the filter chamber 11 to filter the wastewater. The other two sides of the filter plate 14 have a space of the same size between them and the inner wall of the filter chamber 11 to accommodate the storage mechanism 40. The top of both sides of the filter chamber 11 is provided with a sliding groove 15. The liquid inlet pipe 16 is installed on one side of the filter chamber 11 and is set near the top of the sliding groove 15 to add wastewater into the filter chamber 11. Both drive mechanisms 30 are located below the liquid inlet pipe 16.

[0045] When filtering wastewater, wastewater is introduced into the filter chamber 11 through the inlet pipe 16. The wastewater entering the filter chamber 11 is filtered by the filter plate 14 and then discharged from the filter chamber 11 through the outlet hopper 12.

[0046] The cleaning mechanism 20 is slidably connected to the top of the filter plate 14, the two storage mechanisms 40 are respectively disposed on both sides of the filter plate 14, and the two drive mechanisms 30 are respectively disposed on both sides of the filter plate 14.

[0047] The drive mechanism 30 can drive the cleaning mechanism 20 to reciprocate. During the movement, the cleaning mechanism 20 can clean the impurities on the top of the filter plate 14 by adhering to the top of the filter plate 14. While the cleaning mechanism 20 reciprocates on the filter plate 14, it can also push the cleaned impurities into the storage mechanisms 40 on both sides of the filter plate 14 to prevent the scraped impurities from remaining on the filter plate 14 and thus avoid affecting the filtration efficiency of the filter plate 14.

[0048] like Figures 1 to 6 As shown, the cleaning mechanism 20 includes a movable plate 21, protrusions 22, a scraper plate 24, sliding strips 25, and limiting blocks 26. The movable plate 21 is disposed between the two drive mechanisms 30, and the bottom of the movable plate 21 has a groove to accommodate the scraper plate 24. The protrusions 22 are arc-shaped and there are four sets, which are respectively installed on the two side edges of the movable plate 21. There are multiple protrusions 22 in each set, and the multiple protrusions 22 are evenly distributed along the height direction of the movable plate 21. The scraper plate 24 is slidably connected in the groove of the movable plate 21 and is tightly fitted to the top of the filter plate 14. The movable plate 21 can drive the scraper plate 24 to scrape off the impurities on the filter plate 14. There are four limiting blocks 26, which are respectively installed at the four corners of the top of the scraper plate 24 to prevent the movable plate 21 from detaching from the scraper plate 24. There are two sliding strips 25, which are respectively installed on both sides of the scraper plate 24. The bottom protrusion 22 has a groove 23 for the slider 25 to slide.

[0049] The filter chamber 11 can be divided into two filter spaces by the movable plate 21. When the movable plate 21 passes the inlet pipe 16, the filter plate 14 in the filter space containing the inlet pipe 16 can continue to filter the wastewater. At the same time, the inlet pipe 16 stops supplying wastewater to the other filter space, so that the other part of the filter plate 14 stops filtering the wastewater, which makes it easier for the scraper plate 24 to scrape off the impurities on the filter plate 14.

[0050] The drive mechanism 30 can drive the movable plate 21 to slide on the scraper plate 24. When the movable plate 21 moves to the edge of the scraper plate 24, the limiting block 26 can prevent the movable plate 21 from moving further outward, thereby preventing the movable plate 21 from detaching from the scraper plate 24. While the movable plate 21 continues to be subjected to the force of the drive mechanism 30, under the limitation of the limiting block 26, the movable plate 21 will transmit this force to the scraper plate 24, thereby driving the scraper plate 24 to move on the surface of the filter plate 14. Since the bottom of the scraper plate 24 is in close contact with the surface of the filter plate 14, during the movement, the scraper plate 24 will exert force on the impurities filtered on the filter plate 14, scraping these impurities from the surface of the filter plate 14. As the scraper plate 24 continues to move, the impurities are gradually accumulated and cleaned, thereby ensuring the cleanliness of the surface of the filter plate 14 and improving filtration efficiency and quality.

[0051] like Figures 1 to 3 As shown, the drive mechanism 30 includes a drive assembly 31, a sliding assembly 32, a lead screw 33, and a slide rod 34. The drive assembly 31 is mounted on the filter chamber 11 and is located on the same side as the slide groove 15. The lead screw 33 and the slide rod 34 are both mounted on the drive assembly 31. The sliding assembly 32 is threadedly connected to the lead screw 33 and slidably connected to the slide rod 34. A movable plate 21 is disposed between the sliding assemblies 32 in the two drive mechanisms 30.

[0052] The drive assembly 31 can drive the lead screw 33 to rotate. During the rotation of the lead screw 33, it can drive the sliding assembly 32 to slide, thereby driving the moving plate 21 to slide, so as to drive the scraper plate 24 to move on the filter plate 14.

[0053] like Figures 2 to 3 As shown, the drive assembly 31 includes a mounting plate 311 and a motor 312. There are two mounting plates 311, which are respectively mounted on both sides of the filter chamber 11. A lead screw 33 is rotatably connected between the two mounting plates 311, and a slide rod 34 is mounted between the two mounting plates 311 and located on one side of the lead screw 33. The motor 312 is mounted on one side of one of the mounting plates 311, and the output shaft of the motor 312 is fixed to one end of the lead screw 33.

[0054] When motor 312 starts, it drives lead screw 33 to rotate. As lead screw 33 rotates, sliding component 32 moves back and forth along the length of lead screw 33. During the movement, sliding component 32 drives moving plate 21 to move back and forth. The movement of moving plate 21 further drives scraper plate 24, so that scraper plate 24 can move back and forth on top of filter plate 14, thereby cleaning the impurities on top of filter plate 14.

[0055] like Figures 2 to 3 and Figure 7 As shown, the sliding assembly 32 includes a movable plate 321, a connecting block 322, a second motor 323, a turntable 324, a first hinge shaft 325, a hinge arm 326, a sliding block 327, a second hinge shaft 328, and a fixed plate 329.

[0056] There are two connecting blocks 322, which are respectively installed on both sides of the bottom of the movable plate 321. One connecting block 322 is threadedly connected to the lead screw 33, and the other connecting block 322 is slidably connected to the slide rod 34. The second motor 323 is installed on the top of the movable plate 321, and one end of the turntable 324 is installed on the drive shaft of the second motor 323. The first hinge shaft 325 is installed at the edge of the other end of the turntable 324, and one end of the hinge arm 326 is hinged to the first hinge shaft 325. The sliding block 327 is slidably connected in the slide groove 15, and the second hinge shaft 328 is installed on one side of the sliding block 327 and hinged to the other end of the hinge arm 326. There are two fixed plates 329, both of which are installed on the other side of the sliding block 327. The moving plate 21 is installed between the two fixed plates 329.

[0057] When motor 312 drives the movable plate 321 to reciprocate along the length of the lead screw 33 via the connecting block 322 on the lead screw 33, the movable plate 321 drives motor 323 to move synchronously. At this time, motor 323 drives the hinge arm 326 to move via turntable 324, and the hinge arm 326 drives the movable plate 21 to move via the fixed plate 329 on the sliding block 327. When the movable plate 21 contacts the limiting block 26 at the top edge of the scraper plate 24, the movable plate 21 pushes the scraper plate 24 to move via the limiting block 26. During the movement of the scraper plate 24, motor 323 drives turntable 324 to rotate, and turntable 324 drives the sliding block 327 to slide in the slide groove 15 via the hinge arm 326 on hinge shaft 325, so that the movable plate 21 reciprocates on the scraper plate 24. When the moving plate 21 contacts the limiting block 26 at the other edge of the top of the scraper plate 24, the moving plate 21 can drive the scraper plate 24 to move backward through the limiting block 26.

[0058] After the scraper plate 24 moves backward, the moving plate 21 drives the scraper plate 24 to move forward again, so that the scraper plate 24 scrapes the top of the filter plate 14 multiple times in the moving direction, thereby further improving the cleaning effect of the filter plate 14.

[0059] like Figures 1 to 2 As shown, the storage mechanism 40 includes a squeezing assembly 41 and a discharge assembly 42. The squeezing assembly 41 is rotatably connected to one side of the filter chamber 11 and is inclined. The discharge assembly 42 is located at the bottom of one side of the squeezing assembly 41. The squeezing assembly 41, the discharge assembly 42 and the inner wall of the filter chamber 11 together form a collection space for impurities.

[0060] As the scraper plate 24 moves, it gradually approaches the edge of the filter plate 14. When the scraper plate 24 reaches the edge of the filter plate 14, it pushes the scraped impurities into the collection space formed by the extrusion assembly 41, the discharge assembly 42, and the inner wall of the filter chamber 11, while also coming into contact with the extrusion assembly 41. As the scraper plate 24 continues to move, it pushes the extrusion assembly 41 closer to the inner wall of the filter chamber 11, gradually reducing the space between the extrusion assembly 41 and the discharge assembly 42. This squeezes the impurities between the extrusion assembly 41 and the discharge assembly 42, gradually expelling the liquid originally mixed in with the impurities under pressure. The expelled liquid flows through the extrusion assembly 41 into the outlet hopper 12, while the extruded impurities remain between the extrusion assembly 41 and the discharge assembly 42, awaiting subsequent discharge operations.

[0061] like Figure 2 and Figure 8 As shown, the extrusion assembly 41 includes an extrusion plate 411, an extension block 412, a rotating rod 413, an elastic element 414, and a limiting plate 415. The extrusion plate 411 is inclinedly disposed on one side inside the filter chamber 11 and in contact with the filter plate 14, and the top of the extrusion plate 411 is at the same horizontal plane as the top of the filter plate 14. The extrusion plate 411 has filter holes for discharging the extruded wastewater.

[0062] There are two extension blocks 412, two rotating rods 413, two elastic elements 414, and two limiting plates 415. The tops of the two extension blocks 412 are both arc-shaped. The two extension blocks 412 are respectively installed on the top two sides of the extrusion plate 411, and the extension blocks 412 are located above the filter plate 14. One end of each of the two rotating rods 413 is installed on the bottom of both sides of the extrusion plate 411, and the other end of each of the two rotating rods 413 passes through the filter chamber 11 and extends to the outside of the filter chamber 11. The two limiting plates 415 are respectively installed on the other end of the two rotating rods 413 to limit the rotation rods 413. The two elastic elements 414 are respectively sleeved on the outside of the two rotating rods 413. The elastic elements 414 are torque springs. One end of the elastic element 414 is installed on the inner wall of the filter chamber 11, and the other end of the elastic element 414 is installed on the extrusion plate 411 to drive the extrusion plate 411 to return to its original position.

[0063] When the scraper plate 24 moves to the edge of the filter plate 14, it comes into contact with the extension block 412 on the extrusion plate 411. As the scraper plate 24 continues to move, it pushes the extrusion plate 411 to rotate around the rotating rod 413 via the extension block 412. At the same time, the elastic element 414 connected to the extrusion plate 411 begins to store force. As the extrusion plate 411 continues to rotate, it gradually squeezes the collected impurities. Then, the extension block 412 on the extrusion plate 411 contacts the multiple protrusions 22 on the moving plate 21 in sequence, which causes the extrusion plate 411 to vibrate during rotation, thus shaking off the impurities stuck to it. When the scraper plate 24 pushes the extrusion plate 411 to its limit position, it moves to the top edge of the filter plate 14. At this point, the scraper plate 24 prevents wastewater from flowing out of the gap between the filter plate 14 and the extrusion plate 411.

[0064] like Figure 2 and Figures 8 to 9 As shown, the unloading assembly 42 includes a partition 421, a first hinge seat 422, a hydraulic cylinder 423, and a second hinge seat 424. The partition 421 is located at the bottom of the extrusion plate 411 and is rotatably connected to the inner wall of the filter chamber 11. The bottom of the filter chamber 11 has a groove for accommodating the partition 421, and the partition 421 and the filter chamber 11 are sealed together by a sealing gasket. The first hinge seat 422 is installed at the bottom of the partition 421, and the second hinge seat 424 is installed on the liquid outlet hopper 12. The fixed end of the hydraulic cylinder 423 is hinged to one end of the second hinge seat 424, and the movable end of the hydraulic cylinder 423 is hinged to one end of the first hinge seat 422.

[0065] The hydraulic cylinder 423 can drive the partition 421 to rotate through the hinge seat 422, thereby opening the filter chamber 11 to remove the collected impurities.

[0066] Working principle: When filtering wastewater, the wastewater enters the filter chamber 11 through the inlet pipe 16. After being filtered by the filter plate 14, the wastewater is discharged through the outlet hopper 12.

[0067] During the wastewater filtration process, motor 312 drives movable plate 321 to reciprocate along the length of screw 33 via connecting block 322 on screw 33. At the same time, movable plate 321 drives hinge arm 326 to move via turntable 324 on motor 323. Hinged arm 326 drives moving plate 21 to move synchronously via fixed plate 329 on sliding block 327. During the movement, moving plate 21 gradually approaches the limiting block 26 at the top edge of scraper plate 24.

[0068] When the moving plate 21 contacts the limiting block 26 at one edge of the top of the scraper plate 24, as the moving plate 21 continues to move, it pushes the scraper plate 24 to move on the surface of the filter plate 14 under the action of the limiting block 26, thereby scraping away the impurities filtered out by the filter plate 14. During the movement of the scraper plate 24, the motor 23 also drives the turntable 324 to rotate. The turntable 324 drives the sliding block 327 to slide in the slide groove 15 through the hinge arm 326 on the hinge shaft 1 325, thereby enabling the moving plate 21 to slide back and forth on the scraper plate 24. When the moving plate 21 contacts the limiting block 26 on the other side edge of the top of the scraper plate 24, the moving plate 21 can drive the scraper plate 24 to move backward through the limiting block 26. After the scraper plate 24 moves backward, the rotation of the turntable 324 can cause the moving plate 21 to drive the scraper plate 24 to move forward again, so that the scraper plate 24 can scrape the top of the filter plate 14 multiple times in the moving direction, thereby further improving the cleaning effect of the filter plate 14.

[0069] When the scraper plate 24 moves to the edge of the filter plate 14, it pushes the scraped impurities between the extrusion plate 411 and the partition plate 421 for centralized collection. When the scraper plate 24 reaches the edge of the filter plate 14, it contacts the extension block 412 on the extrusion plate 411. At this time, the scraper plate 24 pushes the extrusion plate 411 to rotate around the rotating rod 413 via the extension block 412, while the elastic element 414 stores force. As the extrusion plate 411 continues to rotate, it gradually squeezes the collected impurities, thereby squeezing out the liquid mixed in with the impurities. The squeezed liquid is discharged from the filter holes of the extrusion plate 411. During the squeezing process, the extension block 412 on the extrusion plate 411 contacts multiple protrusions 22 on the moving plate 21 in sequence. Under the action of the elastic element 414, the extrusion plate 411 vibrates during rotation, shaking off the impurities adhering to it. When the scraper plate 24 pushes the extrusion plate 411 to its limit position, the scraper plate 24 moves to the top edge of the filter plate 14, at which point it is blocked by the scraper plate 24.

[0070] After the impurities are squeezed out, the hydraulic cylinder 423 is activated. At this time, the hydraulic cylinder 423 can drive the partition 421 to rotate through the hinge seat 422, thereby opening the filter chamber 11 to discharge the collected impurities.

[0071] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A pickling waste liquid filtration device, comprising a filtration mechanism, wherein the filtration mechanism includes a filter plate, characterized in that, The filtration mechanism includes a filter chamber with grooves on both sides of the top. The liquid inlet pipe is installed on one side of the filter chamber and is located near the top of the groove. The top of the filter plate is equipped with a cleaning mechanism, and both sides of the cleaning mechanism are equipped with drive mechanisms. Both sides of the filter plate are equipped with storage mechanisms. The cleaning mechanism can directly push the scraped impurities into the storage mechanism. The storage mechanism includes a squeezing component and a discharge component. The squeezing component is rotatably connected to the inside of the filtration mechanism and contacts the filter plate. When the cleaning mechanism moves to the inside of the filtration mechanism, it can also push the squeezing component to fold. The cleaning mechanism includes a movable plate positioned between two drive mechanisms and a scraper plate slidably connected to the bottom of the movable plate. The movable plate can drive the scraper plate to scrape off impurities filtered out by the filtration mechanism. The cleaning mechanism also includes four sets of protrusions and four limiting blocks. The four sets of protrusions are all arc-shaped and are respectively installed on the two sides of the movable plate. The four limiting blocks are respectively installed at the four top corners of the scraper plate. The drive mechanism can drive the movable plate to slide on the scraper plate. When the movable plate moves to the edge of the scraper plate, the limiting blocks can prevent the movable plate from moving outward. The drive mechanism includes a sliding assembly that is reciprocally slidably mounted on the filter mechanism; the sliding assembly includes a second motor mounted on one side of the filter mechanism, a turntable mounted on the second motor, a hinge arm hinged to the turntable, and a sliding block hinged to the hinge arm; one end of the turntable is mounted on the drive shaft of the second motor, the first hinge shaft is mounted on the other edge of the turntable, and one end of the hinge arm is hinged to the first hinge shaft; the sliding block is mounted on a moving plate, slides in a groove, and two fixed plates are mounted on one side of the sliding block, with the moving plate mounted between the two fixed plates; The filter chamber can be divided into two filter spaces by the movable plate. When the movable plate passes the inlet pipe, the filter plate in the filter space containing the inlet pipe can continue to filter the wastewater, while the inlet pipe stops supplying wastewater to the other filter space. During the movement of the scraper plate, motor 2 also drives the turntable to rotate. At the same time, the turntable drives the moving plate on the sliding block to slide back and forth on the scraper plate through the hinge arm. When the moving plate moves in the opposite direction to the scraping direction, it can drive the scraper plate to move backward, so that the scraper plate can scrape the filter plate multiple times in the scraping direction.

2. The pickling waste liquid filtration device according to claim 1, characterized in that, The unloading assembly is located at the bottom of one side of the extrusion assembly.

3. The pickling waste liquid filtration device according to claim 2, characterized in that, The extrusion assembly includes an extrusion plate, rotating rods installed on the bottom of both sides of the extrusion plate, and elastic elements sleeved on the rotating rods. The elastic elements are installed between the inner wall of the filter mechanism and the extrusion plate. The extrusion plate is inclinedly arranged on one side inside the filter mechanism, and the top of the extrusion plate and the top of the filter plate are located on the same horizontal plane.

4. The pickling waste liquid filtration device according to claim 3, characterized in that, The extrusion assembly also includes two extension blocks mounted on both sides of the top of the extrusion plate, and the tops of the two extension blocks are both arc-shaped.

5. The pickling waste liquid filtration device according to claim 4, characterized in that, The unloading assembly includes a partition and a hydraulic cylinder. The partition is located at the bottom of one side of the extrusion plate and is rotatably connected to the filtering mechanism. The movable end of the hydraulic cylinder is hinged to the bottom of the partition, and the fixed end of the hydraulic cylinder is hinged to the filtering mechanism. The filtering mechanism has a groove for accommodating the partition.

6. The pickling waste liquid filtration device according to claim 1, characterized in that, The drive mechanism also includes a drive assembly, a lead screw, and a slide bar, with the lead screw and slide bar both mounted on the drive assembly.

7. The pickling waste liquid filtration device according to claim 6, characterized in that, The drive assembly includes a motor and two mounting plates. The two mounting plates are respectively mounted on both sides of the filter mechanism. The lead screw is rotatably connected between the two mounting plates. The slide rod is installed between the two mounting plates. The motor is mounted on one side of one of the mounting plates and connected to the lead screw.

8. The pickling waste liquid filtration device according to claim 7, characterized in that, The sliding assembly also includes a movable plate and two connecting blocks. The two connecting blocks are respectively installed on the bottom sides of the movable plate. One of the connecting blocks is threadedly connected to a lead screw, and the other connecting block is slidably connected to a slide rod. The second motor is installed on the top of the movable plate.

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