Pickling waste liquid filtering device

Abstract

The invention relates to the technical field of filtering equipment, and particularly discloses a pickling waste liquid filtering device which comprises a filtering mechanism, a filtering plate is arranged in the filtering mechanism, a cleaning mechanism is arranged at the top of the filtering plate, driving mechanisms are arranged on the two sides of the cleaning mechanism, and storage mechanisms are arranged on the two sides of the filtering plate; according to the pickling waste liquid filtering device, the sliding block drives the slag scraping plate to reciprocate on the filtering plate through the moving plate so as to scrape impurities on the filtering plate, in the moving process of the slag scraping plate, the second motor further drives the rotating disc to rotate, and meanwhile the rotating disc drives the moving plate on the sliding block to reciprocate on the slag scraping plate through the hinge arm so as to scrape impurities on the filtering plate. When the moving plate moves in the direction opposite to the scraping direction, the slag scraping plate can be driven to move backwards, so that the slag scraping plate scrapes the filter plate for multiple times in the scraping direction, the scraping effect is further improved, the effect of cleaning the filter plate while filtering is achieved, and the filter efficiency is prevented from being influenced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of filtering equipment, in particular to an acid pickling waste liquid filtering device. BACKGROUND

[0002] Acid pickling wastewater is wastewater generated during the treatment of metal surface oxides using sulfuric acid, nitric acid, hydrochloric acid, hydrofluoric acid, and phosphoric acid. The wastewater is mainly from steel plants or electroplating plants, with a pH value below 1.5 (free acid 0.5-2%) and strong acidity. The wastewater also contains a large amount of heavy metal ions, acid-base substances, and harmful chemical substances, which pose a serious threat to the environment and human health. Therefore, the treatment of acid pickling wastewater has become an important issue in environmental protection. The main purpose of acid pickling wastewater treatment is to remove harmful substances, including heavy metal ions, acid-base substances, and harmful chemical substances. The treatment principle mainly includes chemical precipitation, adsorption, electrolysis, and biological methods. These methods remove harmful substances in wastewater through different principles to achieve wastewater purification. Before treating acid pickling wastewater, a filtering device is needed to filter larger impurities in the acid pickling wastewater to separate solid impurities, thereby reducing the pressure on subsequent treatment processes.

[0003] A wastewater filtering and treatment device is disclosed in Chinese patent application CN119771048A. The device includes a filter box with an inlet pipe at the top, an outlet pipe at the bottom, and a base fixedly connected to the bottom of the filter box. Several filter screens are fixedly connected inside the filter box, and a cleaning plate is in contact with the top of the filter screen. The filter box is equipped with a flat pushing mechanism to move the cleaning plates. The inner wall of the filter box has several cleaning holes that match the cleaning plates. 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 consistent. An activity seat is slidably arranged in the fixed box, and the end of the activity seat is located in the corresponding cleaning hole. The bottom inner wall of the fixed box has an impurity outlet hole.

[0004] However, the structure design of the above-mentioned related technology can clean the solid impurities on the filter screen, but during the cleaning process of the solid impurities retained on the filter screen, the waste liquid needs to be stopped from being added to the filter cartridge first, and then the cleaning can be performed. This results in the inability to simultaneously clean the filter screen and filter the waste liquid, which further leads to a low efficiency of solid-liquid mixture separation.

[0005] Therefore, an acid pickling waste liquid filtering device is proposed to solve the problems mentioned above. SUMMARY

[0006] The acid pickling waste liquid filtering device aims to solve the problem that the cleaning of the filter screen and the filtering of the waste liquid cannot be simultaneously performed in the prior art.

[0007] The acid pickling waste liquid filtering device comprises a filtering mechanism, a filter plate in the filtering mechanism, a cleaning mechanism on the top of the filter plate, driving mechanisms on both sides of the cleaning mechanism, and storage mechanisms on both sides of the filter plate. The cleaning mechanism comprises a moving plate between the two driving mechanisms and a slag scraping plate slidingly connected to the bottom of the moving plate. The driving mechanism comprises a sliding assembly reciprocally slidingly arranged on the filtering mechanism.

[0008] When the waste water is filtered, the waste water is introduced into the filtering mechanism, and the waste water in the filtering mechanism is filtered by the filter plate and then discharged.

[0009] Preferably, the storage mechanism comprises a pressing assembly and a discharging assembly.

[0010] When the slag scraping plate moves to the edge position of the filter plate, the removed impurities can be pushed to the pressing assembly, and the impurities are stored on the discharging assembly along the pressing assembly.

[0011] Preferably, the pressing assembly comprises a pressing plate, rotating rods installed on the bottom of both sides of the pressing plate, and elastic members sleeved on the rotating rods.

[0012] The extrusion plate can rotate around the rotating rod. When the extrusion plate is extruded to rotate, the elastic member is compressed and stores energy. When the extrusion plate loses the extrusion force, the elastic member releases the stored energy and drives the extrusion plate to reset.

[0013] Preferably, the extrusion assembly further comprises two extension blocks mounted on the top of the extrusion plate on both sides. The top of the two extension blocks is arc-shaped.

[0014] When the slag scraping plate moves to the edge position 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 member is compressed, thereby extruding the collected impurities to squeeze out the liquid mixed in the impurities. When the slag scraping plate moves to the center of the filter plate, the elastic force of the elastic member can drive the extrusion plate to reset, so as to guide the impurities to fall on the discharging assembly in the subsequent process.

[0015] Preferably, the cleaning mechanism further comprises four groups of protrusions and four limiting blocks. The four groups of protrusions are arc-shaped and are respectively installed on the two side edge positions of the moving plate. The four limiting blocks are respectively installed at the top four corners of the slag scraping plate.

[0016] During the extrusion of the impurities, the extension blocks on the extrusion plate will be in contact with the plurality of protrusions on the moving plate in sequence. In the process of being in contact with the plurality of protrusions in sequence, the extension blocks can make the extrusion plate vibrate continuously. When the extrusion plate resets, the plurality of protrusions on the moving plate can make the extrusion plate vibrate again, thereby shaking off the impurities adhered to the extrusion plate.

[0017] Preferably, the discharging assembly comprises a partition plate and a hydraulic cylinder. The partition plate is arranged on the bottom of one side of the extrusion plate and is rotatably connected with the filter mechanism. The movable end of the hydraulic cylinder is hingedly connected to the bottom of the partition plate. The fixed end of the hydraulic cylinder is hingedly connected to the filter mechanism. The filter mechanism is provided with a groove for accommodating the partition plate.

[0018] When it is necessary to discharge the collected impurities from the filter mechanism, the hydraulic cylinder can drive the partition plate to rotate. At this time, the partition plate is turned down under the driving of the hydraulic cylinder, thereby opening the bottom side of the filter mechanism to discharge the collected impurities from the filter mechanism.

[0019] Preferably, the driving mechanism further comprises a driving assembly, a lead screw and a sliding rod. The lead screw and the sliding rod are arranged on the driving assembly.

[0020] Preferably, the driving assembly comprises a motor and two mounting plates. The two mounting plates are respectively arranged on the two sides of the filter mechanism. The lead screw is rotatably connected between the two mounting plates. The sliding rod is arranged between the two mounting plates. The motor is arranged on one side of one of the mounting plates and is connected with the lead screw.

[0021] Preferably, the sliding assembly further comprises a movable plate and two connecting blocks, the two connecting blocks are respectively installed on the bottom of the movable plate, one of the connecting blocks is threadedly connected with the lead screw, and the other connecting block is slidingly connected with the sliding rod, and the motor two is installed on the top of the movable plate.

[0022] When the motor one drives the lead screw to rotate, the lead screw can drive the movable plate to reciprocatingly slide along the length direction of the lead screw through the connecting blocks, so as to drive the motor two to reciprocatingly slide, and then the motor two can drive the slag scraping plate to reciprocatingly slide on the filter plate.

[0023] Preferably, a sliding groove for the sliding block to slide is formed in the filter mechanism, two fixed plates are installed on one side of the sliding block, and the moving plate is installed between the two fixed plates.

[0024] By adopting the above technical scheme, the beneficial effects of the present application are as follows: during the wastewater filtration process, the motor two reciprocatingly moves on the filter mechanism, at this time, the motor two drives the rotating disc to move, the rotating disc drives the sliding block to reciprocatingly move on the filter mechanism through the hinged arm, and the sliding block drives the slag scraping plate to reciprocatingly move on the filter plate through the moving plate, so as to scrape off the impurities on the filter plate, during the movement of the slag scraping plate, the motor two also drives the rotating disc to rotate, and the rotating disc drives the moving plate on the sliding block to reciprocatingly slide on the slag scraping plate through the hinged arm, when the moving plate moves in the direction opposite to the scraping direction, the moving plate can drive the slag scraping plate to move backward, so that the slag scraping plate can scrape the filter plate for multiple times in the scraping direction, so as to further improve the scraping effect, when the slag scraping plate moves to the edge position of the filter plate, the scraped impurities can be pushed into the storage mechanism for centralized storage, so as to achieve the effect of cleaning the filter plate while filtering, and avoid affecting the filtering efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a whole structure schematic view of the specific embodiment in the present application.

[0026] Figure 2 It is a cross-sectional structure schematic view of the filter bin of the specific embodiment in the present application.

[0027] Figure 3 It is a structure schematic view of the cleaning mechanism of the specific embodiment in the present application.

[0028] Figure 4 It is a structure schematic view of the moving plate of the specific embodiment in the present application.

[0029] Figure 5 It is a structure schematic view of the specific embodiment in the present application. Figure 4 It is an enlarged structure schematic view of A in the specific embodiment in the present application.

[0030] Figure 6 It is a local structure schematic view of the slag scraping plate of the specific embodiment in the present application.

[0031] Figure 7 The exploded structural schematic diagram of the sliding assembly of the specific embodiment in the application.

[0032] Figure 8 The structural schematic diagram of the extrusion assembly of the specific embodiment in the application.

[0033] Figure 9 The structural schematic diagram of the discharging assembly of the specific embodiment in the application.

[0034] Reference signs: 10, filtering mechanism; 11, filtering bin; 12, liquid outlet; 13, supporting leg; 14, filtering plate; 15, chute; 16, liquid inlet pipe; 20, cleaning mechanism; 21, moving plate; 22, protrusion; 23, groove; 24, slag scraping plate; 25, sliding bar; 26, limiting block; 30, driving mechanism; 31, driving assembly; 311, mounting plate; 312, motor one; 32, sliding assembly; 321, movable plate; 322, connecting block; 323, motor two; 324, rotating disc; 325, hinged shaft one; 326, hinged arm; 327, sliding block; 328, hinged shaft two; 329, fixed plate; 33, lead screw; 34, sliding rod; 40, storage mechanism; 41, extrusion assembly; 411, extrusion plate; 412, extension block; 413, rotating rod; 414, elastic member; 415, limiting plate; 42, discharging assembly; 421, partition plate; 422, hinged seat one; 423, hydraulic cylinder; 424, hinged seat two. DETAILED DESCRIPTION

[0035] Embodiments of the application are described in detail below with reference to the attached drawings. The embodiments described below are examples for explaining the present application and are not to be construed as limiting the present application.

[0036] As Figures 1 to 9 shown, the pickling waste liquid filtering device of the application comprises a filtering mechanism 10, a cleaning mechanism 20, a driving mechanism 30 and a storage mechanism 40. The cleaning mechanism 20 is slidingly arranged inside the filtering mechanism 10 to clean the filtered impurities. The number of the driving mechanism 30 is two, and the two driving mechanisms 30 are arranged at the top of the two sides of the filtering mechanism 10. The two driving mechanisms 30 are connected with the cleaning mechanism 20 to drive the cleaning mechanism 20 to move in the filtering mechanism 10. The number of the storage mechanism 40 is two, and the two storage mechanisms 40 are arranged at the two sides inside the filtering mechanism 10 to collect the cleaned impurities.

[0037] In the process of filtering wastewater, the two driving mechanisms 30 jointly drive the cleaning mechanism 20 to reciprocate in the filtering mechanism 10. In the process of reciprocation, the cleaning mechanism 20 gradually scrapes various impurities intercepted and filtered out by the filtering mechanism 10 into the storage mechanism 40 for storage. When the cleaning mechanism 20 moves to the inside of the filtering mechanism 10, it can also push the storage mechanism 40 to fold, so that the storage mechanism 40 extrudes the collected impurities to squeeze out the water in the impurities.

[0038] As shown in Figures 1 to 2 The filtering mechanism 10 includes a filtering bin 11, a liquid outlet 12, support legs 13, a filtering plate 14, and a liquid inlet pipe 16. The top of the liquid outlet 12 is mounted at the bottom of the filtering bin 11, and the filtering bin 11 is in communication with the liquid outlet 12, which can guide the filtered wastewater out of the filtering bin 11. The four support legs 13 are respectively installed at the bottom corners of the filtering bin 11 to support the filtering bin 11. The filtering plate 14 is located inside the filtering bin 11, and the two sides of the filtering plate 14 are respectively installed at the middle of the inner walls of the filtering bin 11 to filter the wastewater. The other two sides of the filtering plate 14 and the inner walls of the filtering bin 11 leave spaces of the same size to accommodate the storage mechanism 40. The two sides of the top of the filtering bin 11 are provided with sliding grooves 15, and the liquid inlet pipe 16 is installed on one side of the filtering bin 11 and close to the top of the sliding groove 15 to add wastewater to the filtering bin 11. The two driving mechanisms 30 are located below the liquid inlet pipe 16.

[0039] When filtering wastewater, wastewater is introduced into the filtering bin 11 through the liquid inlet pipe 16, and the wastewater entering the filtering bin 11 is filtered by the filtering plate 14 and then discharged from the filtering bin 11 through the liquid outlet 12.

[0040] The cleaning mechanism 20 is slidingly connected to the top of the filtering plate 14, and the two storage mechanisms 40 are respectively arranged on the two sides of the filtering plate 14. The two driving mechanisms 30 are respectively arranged on the two sides of the filtering plate 14.

[0041] The driving mechanism 30 can drive the cleaning mechanism 20 to reciprocate, and in the process of movement, the cleaning mechanism 20 can clean the impurities on the top of the filtering plate 14. While the cleaning mechanism 20 reciprocates on the filtering plate 14, it can also push the cleaned impurities into the storage mechanisms 40 on both sides of the filtering plate 14, preventing the removed impurities from remaining on the filtering plate 14 and affecting the filtering efficiency of the filtering plate 14.

[0042] As shown in Figures 1 to 6As shown, the cleaning mechanism 20 comprises a moving plate 21, a protruding block 22, a slag scraping plate 24, a sliding strip 25 and a limiting block 26. The moving plate 21 is arranged between two driving mechanisms 30, and the bottom of the moving plate 21 is provided with a groove accommodating the slag scraping plate 24. The protruding block 22 is arc-shaped and has four groups, and each group of the protruding block 22 is arranged at the edge of the moving plate 21. Each group of the protruding block 22 has multiple protruding blocks 22, and the multiple protruding blocks 22 are distributed at equal intervals along the height direction of the moving plate 21. The slag scraping plate 24 is slidingly connected in the groove of the moving plate 21 and tightly abuts against the top of the filter plate 14, and the moving plate 21 can drive the slag scraping plate 24 to scrape off the impurities on the filter plate 14. The limiting block 26 has four limiting blocks 26, and each limiting block 26 is arranged at the top corner of the slag scraping plate 24 to prevent the moving plate 21 from being separated from the slag scraping plate 24. The sliding strip 25 has two sliding strips 25, and each sliding strip 25 is arranged at the side of the slag scraping plate 24. The bottommost protruding block 22 is provided with a groove 23 for the sliding strip 25 to slide.

[0043] The filter bin 11 can be divided into two filter spaces by the moving plate 21. When the moving plate 21 passes the liquid inlet pipe 16, the filter plate 14 in the filter space containing the liquid inlet pipe 16 can continue to filter the wastewater, while the liquid 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, facilitating the slag scraping plate 24 to scrape off the impurities on the filter plate 14.

[0044] The driving mechanism 30 can drive the moving plate 21 to slide on the slag scraping plate 24. When the moving plate 21 moves to the edge position of the slag scraping plate 24, the limiting block 26 can prevent the moving plate 21 from continuing to move outward, thereby preventing the moving plate 21 from being separated from the slag scraping plate 24. While the moving plate 21 continues to be acted on by the driving force of the driving mechanism 30, under the limiting of the limiting block 26, the moving plate 21 will transmit this driving force to the slag scraping plate 24, thereby driving the slag scraping plate 24 to move on the surface of the filter plate 14. Since the bottom of the slag scraping plate 24 tightly abuts against the surface of the filter plate 14, during the moving process, the slag scraping plate 24 will apply a force to the impurities filtered on the filter plate 14 to scrape off these impurities from the surface of the filter plate 14. With the continuous movement of the slag scraping plate 24, the impurities are gradually gathered and cleaned, thereby ensuring the cleanliness of the surface of the filter plate 14 and improving the filtering efficiency and quality.

[0045] As shown in the figure, Figures 1 to 3 The driving mechanism 30 comprises a driving assembly 31, a sliding assembly 32, a lead screw 33 and a sliding rod 34. The driving assembly 31 is arranged on the filter bin 11 and located at the same side as the sliding groove 15, and the lead screw 33 and the sliding rod 34 are arranged on the driving assembly 31. The sliding assembly 32 is threadedly connected with the lead screw 33, and the sliding assembly 32 is slidingly connected with the sliding rod 34. The moving plate 21 is arranged between the sliding assemblies 32 of the two driving mechanisms 30.

[0046] The driving assembly 31 can drive the screw rod 33 to rotate. During the rotation of the screw rod 33, the sliding assembly 32 can slide, thereby driving the moving plate 21 to slide, so as to drive the slag scraping plate 24 to move on the filter plate 14.

[0047] As shown in Figures 2 to 3 The driving assembly 31 includes two mounting plates 311 and a motor 312. The two mounting plates 311 are respectively installed on the two sides of the filter bin 11. The screw rod 33 is rotatably connected between the two mounting plates 311, and the sliding rod 34 is installed between the two mounting plates 311 and located on one side of the screw rod 33. The motor 312 is installed 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 screw rod 33.

[0048] When the motor 312 is started, the motor 312 drives the screw rod 33 to rotate. With the rotation of the screw rod 33, the sliding assembly 32 can reciprocate along the length direction of the screw rod 33. During the movement of the sliding assembly 32, the moving plate 21 can reciprocate, and the movement of the moving plate 21 further drives the slag scraping plate 24, so that the slag scraping plate 24 can reciprocate on the top of the filter plate 14, thereby achieving the cleaning work of the impurities on the top of the filter plate 14.

[0049] As shown in Figures 2 to 3 and Figure 7 The sliding assembly 32 includes an active plate 321, a connecting block 322, a motor 323, a rotating disc 324, a hinged shaft 325, a hinged arm 326, a sliding block 327, a hinged shaft 328, and a fixed plate 329.

[0050] The two connecting blocks 322 are respectively installed on the two sides of the bottom of the active plate 321. One of the connecting blocks 322 is threadedly connected with the screw rod 33, and the other connecting block 322 is slidably connected with the sliding rod 34. The motor 323 is installed on the top of the active plate 321, and one end of the rotating disc 324 is installed on the driving shaft of the motor 323. The hinged shaft 325 is installed on the other end edge of the rotating disc 324, and one end of the hinged arm 326 is hingedly connected with the hinged shaft 325. The sliding block 327 is slidably connected in the sliding groove 15, the hinged shaft 328 is installed on one side of the sliding block 327 and hingedly connected with the other end of the hinged arm 326, and the two fixed plates 329 are installed on the other side of the sliding block 327. The moving plate 21 is installed between the two fixed plates 329.

[0051] When the motor 312 drives the movable plate 321 to move along the length direction of the screw rod 33, the movable plate 321 drives the motor 323 to move synchronously, and the motor 323 drives the hinged arm 326 to move through the rotating disc 324, and the hinged arm 326 drives the moving plate 21 to move through the fixed plate 329 on the sliding block 327. When the moving plate 21 contacts the limiting block 26 on one side edge of the top of the slag scraping plate 24, the moving plate 21 drives the slag scraping plate 24 to move through the limiting block 26. During the movement of the slag scraping plate 24, the motor 323 drives the rotating disc 324 to rotate, and the rotating disc 324 drives the sliding block 327 to slide in the sliding groove 15 through the hinged arm 326 on the hinged shaft 325, so that the moving plate 21 slides on the slag scraping plate 24. When the moving plate 21 contacts the limiting block 26 on the other side edge of the top of the slag scraping plate 24, the moving plate 21 drives the slag scraping plate 24 to move backward through the limiting block 26.

[0052] When the slag scraping plate 24 moves backward, the moving plate 21 drives the slag scraping plate 24 to move forward again, so that the slag scraping plate 24 scrapes the top of the filter plate 14 in the moving direction for multiple times, thereby further improving the cleaning effect of the filter plate 14.

[0053] As shown in Figures 1 to 2 The storage mechanism 40 includes a squeezing assembly 41 and a discharging assembly 42. The squeezing assembly 41 is rotationally connected to the inner side of the filter bin 11 and is obliquely arranged, and the discharging assembly 42 is arranged at the bottom of one side of the squeezing assembly 41. The squeezing assembly 41, the discharging assembly 42 and the inner wall of the filter bin 11 jointly form a collection space for impurities.

[0054] During the movement of the slag scraping plate 24, the slag scraping plate 24 gradually approaches the edge of the filter plate 14, and when the slag scraping plate 24 moves to the edge of the filter plate 14, the scraped impurities can be pushed into the collection space formed by the squeezing assembly 41, the discharging assembly 42 and the inner wall of the filter bin 11, and the slag scraping plate 24 can also contact the squeezing assembly 41. With the continuous movement of the slag scraping plate 24, the slag scraping plate 24 can push the squeezing assembly 41 to approach the inner wall of the filter bin 11, so that the space between the squeezing assembly 41 and the discharging assembly 42 gradually decreases, so as to squeeze the impurities between the squeezing assembly 41 and the discharging assembly 42. The liquid originally mixed in the impurities is gradually squeezed out under the action of pressure. The squeezed liquid flows into the liquid outlet 12 through the squeezing assembly 41, and the impurities after being squeezed are left between the squeezing assembly 41 and the discharging assembly 42, waiting for subsequent discharging operation.

[0055] As shown in Figure 2 and Figure 8As shown, the extrusion assembly 41 comprises an extrusion plate 411, an extension block 412, a rotating rod 413, an elastic member 414 and a limiting plate 415. The extrusion plate 411 is obliquely arranged at the inner side of the filter bin 11 and is 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 is provided with filter holes for discharging the extruded wastewater.

[0056] The extension block 412, the rotating rod 413, the elastic member 414 and the limiting plate 415 are all two in number, and the top ends of the two extension blocks 412 are arc-shaped. The two extension blocks 412 are respectively arranged at the two sides of the top of the extrusion plate 411 and are above the filter plate 14. One end of each of the two rotating rods 413 is arranged at the bottom of the two sides of the extrusion plate 411, and the other end of each of the two rotating rods 413 penetrates through the filter bin 11 and extends to the outside of the filter bin 11. The two limiting plates 415 are respectively arranged at the other end of the two rotating rods 413 to limit the rotating rods 413. The two elastic members 414 are respectively sleeved on the outside of the two rotating rods 413, and the elastic members 414 are torque springs. One end of the elastic member 414 is arranged on the inner wall of the filter bin 11, and the other end of the elastic member 414 is arranged on the extrusion plate 411 to drive the extrusion plate 411 to reset.

[0057] When the slag scraping plate 24 moves to the edge position of the filter plate 14, the slag scraping plate 24 can be in contact with the extension block 412 on the extrusion plate 411. With the continuous movement of the slag scraping plate 24, the slag scraping plate 24 pushes the extrusion plate 411 to rotate around the rotating rod 413 through the extension block 412, and at the same time, the elastic member 414 connected with the extrusion plate 411 starts to store energy. With the continuous rotation of the extrusion plate 411, the extrusion plate 411 gradually extrudes the collected impurities, and then the extension block 412 on the extrusion plate 411 is in contact with the plurality of protrusions 22 on the moving plate 21 in sequence, so that the extrusion plate 411 can vibrate in the process of rotating to shake off the impurities adhering to the extrusion plate 411. When the slag scraping plate 24 pushes the extrusion plate 411 to the limit position, the slag scraping plate 24 moves to the top edge position of the filter plate 14, and at this time, the wastewater is prevented from flowing out from the gap between the filter plate 14 and the extrusion plate 411 through the blockage of the slag scraping plate 24.

[0058] As shown in FIG. 6, the filter plate 14 is provided with a plurality of filter holes 141, and the filter plate 14 is provided with a plurality of protrusions 142 on the top thereof. Figure 2 and Figures 8 to 9As shown, the discharging assembly 42 comprises a partition plate 421, a first hinged seat 422, a hydraulic cylinder 423 and a second hinged seat 424. The partition plate 421 is located at the bottom of the extrusion plate 411 and is pivotally connected to the inner wall of the filter bin 11. The bottom of the filter bin 11 is provided with a groove for accommodating the partition plate 421, and the partition plate 421 is sealed with the filter bin 11 through a sealing gasket. The first hinged seat 422 is installed at the bottom of the partition plate 421, and the second hinged seat 424 is installed on the liquid outlet 12. The fixed end of the hydraulic cylinder 423 is hinged to one end of the second hinged seat 424, and the movable end of the hydraulic cylinder 423 is hinged to one end of the first hinged seat 422.

[0059] The hydraulic cylinder 423 can drive the partition plate 421 to rotate through the first hinged seat 422, thereby opening the filter bin 11 to remove the collected impurities.

[0060] Working principle: when filtering wastewater, the wastewater enters the filter bin 11 through the liquid inlet pipe 16, and the wastewater entering the filter bin 11 is filtered by the filter plate 14 and then discharged through the liquid outlet 12.

[0061] During the process of filtering wastewater, the motor one 312 drives the movable plate 321 to reciprocate along the length direction of the lead screw 33 through the connecting block 322 on the lead screw 33, and the movable plate 321 drives the hinged arm 326 to move through the rotating disc 324 on the motor two 323, and the hinged arm 326 drives the moving plate 21 to move synchronously through the fixed plate 329 on the sliding block 327. During the movement of the moving plate 21, it gradually approaches the limiting block 26 at the top of one side edge of the slag scraping plate 24.

[0062] When the moving plate 21 contacts the limiting block 26 at the top of one side edge of the slag scraping plate 24, with the continuous movement of the moving plate 21, the moving plate 21 will push the slag scraping plate 24 to move on the surface of the filter plate 14 under the action of the limiting block 26, thereby scraping off the impurities filtered by the filter plate 14. During the movement of the slag scraping plate 24, the motor two 323 also drives the rotating disc 324 to rotate, and the rotating disc 324 drives the sliding block 327 to slide in the sliding groove 15 through the hinged arm 326 on the hinged shaft one 325, thereby enabling the moving plate 21 to reciprocate on the slag scraping plate 24. When the moving plate 21 contacts the limiting block 26 at the top of the other side edge of the slag scraping plate 24, the moving plate 21 can drive the slag scraping plate 24 to move backward through the limiting block 26. After the slag scraping plate 24 moves backward, the moving plate 21 can drive the slag scraping plate 24 to move forward again through the rotation of the rotating disc 324, so as to make the slag scraping plate 24 scrape the top of the filter plate 14 in the moving direction for multiple times, thereby further improving the cleaning effect of the filter plate 14.

[0063] When the slag scraping plate 24 moves to the edge position of the filter plate 14, the scraped impurities can be pushed into the extrusion plate 411 and the partition plate 421 to collect the scraped impurities. When the slag scraping plate 24 moves to the edge position of the filter plate 14, the slag scraping plate 24 can be in contact with the extension block 412 on the extrusion plate 411. At this time, the slag scraping plate 24 pushes the extrusion plate 411 to rotate around the rotating rod 413 through the extension block 412, and the elastic member 414 stores the force. With the continuous rotation of the extrusion plate 411, the extrusion plate 411 gradually extrudes the collected impurities, so as to extrude the liquid mixed in the impurities, and the extruded liquid is discharged from the filter hole of the extrusion plate 411. In the process of extruding the impurities, the extension block 412 on the extrusion plate 411 is in contact with the plurality of protrusions 22 on the moving plate 21 in turn, at this time, under the action of the elastic member 414, the extrusion plate 411 can be vibrated in the process of rotating to shake off the impurities adhered to the extrusion plate 411. When the slag scraping plate 24 pushes the extrusion plate 411 to the limit position, the slag scraping plate 24 moves to the top edge position of the filter plate 14, and at this time the slag scraping plate 24 is blocked.

[0064] When the impurities are extruded, the hydraulic cylinder 423 is started, at this time the hydraulic cylinder 423 can drive the partition plate 421 to rotate through the hinged seat one 422, so as to open the filter bin 11 to discharge the collected impurities.

[0065] Although the embodiments of the present application have been shown and described above, it should be understood that the above embodiments are exemplary and should not be construed as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application.

Claims

1. An apparatus for filtering spent pickling liquor comprising a filtering mechanism (10) having a filter plate (14) therein, characterised in that, The top of the filter plate (14) is provided with a cleaning mechanism (20), both sides of the cleaning mechanism (20) are provided with a driving mechanism (30), both sides of the filter plate (14) are provided with a storage mechanism (40), and the cleaning mechanism (20) can directly push the scraped impurities into the storage mechanism (40); The cleaning mechanism (20) comprises a moving plate (21) arranged between the two driving mechanisms (30) and a slag scraping plate (24) slidably connected to the bottom of the moving plate (21), and the moving plate (21) can drive the slag scraping plate (24) to scrape the impurities filtered out by the filtering mechanism (10). The driving mechanism (30) comprises a sliding assembly (32) arranged on the filtering mechanism (10) in a reciprocating sliding mode; the sliding assembly (32) comprises a second motor (323) arranged on one side of the filtering mechanism (10), a rotating disc (324) mounted on the second motor (323), a hinged arm (326) hinged to the rotating disc (324), and a sliding block (327) hinged to the hinged arm (326), and the sliding block (327) is arranged on the moving plate (21).

2. The pickling spent liquor filtration apparatus of claim 1, wherein, The storage mechanism (40) comprises an extrusion assembly (41) and a discharging assembly (42), the extrusion assembly (41) is rotatably connected to one side of the inside of the filtering mechanism (10) and is in contact with the filter plate (14), and the discharging assembly (42) is arranged on the bottom of one side of the extrusion assembly (41).

3. The pickling spent liquor filtration apparatus of claim 2, wherein, The extrusion assembly (41) comprises an extrusion plate (411), rotating rods (413) mounted on the bottom of both sides of the extrusion plate (411), and elastic members (414) sleeved on the rotating rods (413), the elastic members (414) are mounted between the inner wall of the filtering mechanism (10) and the extrusion plate (411), the extrusion plate (411) is arranged on one side of the inside of the filtering mechanism (10) in an inclined mode, and the top of the extrusion plate (411) is located on the same horizontal plane as the top of the filter plate (14).

4. The pickling spent liquor filtration apparatus of claim 3, wherein, The extrusion assembly (41) further comprises two extension blocks (412) mounted on both sides of the top of the extrusion plate (411), and the top of each of the two extension blocks (412) is arc-shaped.

5. The pickling spent liquor filtration apparatus of claim 4, wherein, The cleaning mechanism (20) further comprises four sets of protrusions (22) and four limiting blocks (26), the four sets of protrusions (22) are arc-shaped and are respectively mounted on the edge positions of both sides of the moving plate (21), and the four limiting blocks (26) are respectively mounted at the top four corners of the slag scraping plate (24).

6. The pickling spent liquor filtration apparatus of claim 5, wherein, The discharging assembly (42) comprises a partition plate (421) and a hydraulic cylinder (423), the partition plate (421) is arranged on the bottom of one side of the extrusion plate (411) and is rotatably connected with the filtering mechanism (10), the movable end of the hydraulic cylinder (423) is hinged to the bottom of the partition plate (421), the fixed end of the hydraulic cylinder (423) is hinged to the filtering mechanism (10), and a groove accommodating the partition plate (421) is formed in the filtering mechanism (10).

7. The pickling spent liquor filtration apparatus of claim 1, wherein, The driving mechanism (30) further comprises a driving assembly (31), a lead screw (33) and a sliding rod (34), and the lead screw (33) and the sliding rod (34) are arranged on the driving assembly (31).

8. The pickling spent liquor filtration apparatus of claim 7, wherein, The driving assembly (31) comprises a motor (312) and two mounting plates (311), the two mounting plates (311) are mounted on the two sides of the filtering mechanism (10) respectively, the lead screw (33) is rotatably connected between the two mounting plates (311), the sliding rod (34) is mounted between the two mounting plates (311), and the motor (312) is mounted on one side of one of the mounting plates (311) and connected with the lead screw (33).

9. The pickling spent liquor filtration apparatus of claim 8, wherein, The sliding assembly (32) further comprises a movable plate (321) and two connecting blocks (322), the two connecting blocks (322) are mounted on the bottom of the movable plate (321) respectively, one of the connecting blocks (322) is threadedly connected with the lead screw (33), the other connecting block (322) is slidably connected with the sliding rod (34), and the motor (323) is mounted on the top of the movable plate (321).

10. The pickling spent liquor filtration apparatus of any one of claims 1-9, wherein, A sliding groove (15) for the sliding block (327) to slide is formed in the filtering mechanism (10), two fixed plates (329) are mounted on one side of the sliding block (327), and the moving plate (21) is mounted between the two fixed plates (329).

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