Pretreatment equipment for manufacturing lithium carbonate

Abstract

The invention relates to the technical field of lithium carbonate pretreatment, in particular to pretreatment equipment for lithium carbonate manufacturing, which comprises an upper-layer filter box body, a lower-layer filter box body is movably inserted into the bottom of the upper-layer filter box body, and a lower-layer leakage cone is mounted in the middle of the interior of the lower-layer filter box body. According to the utility model, liquid is filtered by the filter bag on the upper layer, flows into the material leakage bent pipe and then leaks down from the material leakage bent pipe, and the filtrate flushes the filter screen from the lower layer to the conical filter screen after flowing down, so that the material leakage is avoided, and the material leakage is avoided. And when the filter bags need to be replaced, the rotary bag extruding mechanism is used for downwards stretching the blocked filter bags and pulling out the unused filter bags stored in the stock bin mechanism, so that the automatic replacement of the filter bags is realized.

Description

Technical Field

[0001] The invention relates to the technical field of lithium carbonate pretreatment, in particular to pretreatment equipment for lithium carbonate production. Background Art

[0002] Lithium carbonate is an inorganic compound, a colorless monoclinic crystal. Lithium carbonate is widely used in many fields. Among them, the most eye-catching application is in battery and energy storage technology. Battery-grade lithium carbonate is needed in the manufacturing process of electric vehicles. The most common method for preparing battery-grade lithium carbonate is the comprehensive utilization of brine. When using the comprehensive utilization of brine to prepare battery-grade lithium carbonate, pretreatment equipment is required to filter and pretreat to remove solid suspended matter. However, the existing pretreatment equipment for lithium carbonate production has certain problems during the treatment process: 1. In the process of filtration and separation of the existing lithium carbonate production pretreatment equipment, the position of the feeding pipe is fixed, and the filter screen is also fixedly installed. Therefore, in the process of feeding and filtering pretreatment, the feeding position is fixed, and then the single-point feeding method is used. Therefore, in the long-term use process, it is easy to cause unilateral blockage of the filter screen, thereby reducing the filtration efficiency.

[0003] 2. In the existing lithium carbonate filtration pretreatment process, in order to ensure the removal effect of solid suspended matter, the filtration pretreatment is usually carried out by using an upper and lower two-layer filter screen for graded filtration. As a result, the primary filter screen is prone to accumulate more solid impurities, and the accumulation of impurities easily causes the filter screen to be blocked, which requires regular replacement. Moreover, since the probability of the primary filter screen being blocked is greater, it needs to be replaced more frequently. In the existing equipment, the primary filter screen usually needs to be replaced manually, which is time-consuming and labor-intensive, and has low work efficiency.

[0004] 3. In the existing equipment, although the secondary filter needs to filter less impurities, the secondary filter cannot be self-cleaning, so the problem of clogging still exists. Summary of the invention

[0005] The object of the present invention is to provide a pretreatment device for lithium carbonate production to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a pretreatment equipment for lithium carbonate production, comprising an upper filter box, a lower filter box is movably connected to the bottom of the upper filter box, a lower leakage cone is installed in the middle of the lower filter box, and the lower leakage cone is covered with a conical filter cloth, a feed pipe is installed on the top of the rear side of the upper filter box, a scraping and anti-blocking mechanism for scraping impurities and preventing blockage is installed in the center of the top surface of the upper filter box, a partition is installed in the middle of the upper filter box, and a rotating mechanism is installed on the top of the partition, a leakage bent pipe is installed at the bottom of the rotating mechanism, a winding mechanism is arranged in the middle of the leakage bent pipe, an installation groove is symmetrically opened at the bottom of the leakage bent pipe, a rotating bag squeezing mechanism for squeezing and stretching filter bags is installed in the installation groove, and a discharge pipe is installed in the center of the bottom of the lower filter box.

[0007] The rotating mechanism includes a driving assembly and a rotating assembly. The rotating assembly is installed on the top of the partition, and the driving assembly is installed on the front side of the rotating assembly. The rotating assembly includes a bearing seat, and the bearing seat is installed on the top of the partition. A rotating gear ring is installed on the top of the bearing seat, and an upper leakage cone is installed on the bottom of the inner side of the rotating gear ring. The upper leakage cone is covered with a filter bag.

[0008] The rotary bag squeezing mechanism comprises pads, which are symmetrically installed on the top of the leakage elbow. A waterproof box is commonly arranged on the top of the two pads, a power assembly is installed inside the waterproof box, and an extrusion and stretching assembly is installed at the bottom of the power assembly.

[0009] Preferably, a sealing ring is provided at the connection between the lower filter box and the upper filter box, a freely openable top cover is installed on the top of the upper filter box, a No. 1 fixing ring is fixedly connected to the periphery of the bottom of the upper filter box, a No. 2 fixing ring is fixedly connected to the periphery of the bottom of the lower filter box, two No. 1 hydraulic cylinders are symmetrically installed on the top of the No. 2 fixing ring, and the tops of the two No. 1 hydraulic cylinders are fixedly connected to the bottom of the No. 1 fixing ring, three supporting legs are evenly installed on the bottom of the No. 2 fixing ring, two fixing rods are symmetrically installed inside the upper filter box, and a No. 1 crimping ring for crimping and fixing the conical filter bag is commonly installed at the bottom of the two fixing rods.

[0010] Preferably, the drive assembly includes a mounting box, which is mounted on the top of the front side of the upper filter box, and a servo motor is mounted on the bottom surface of the mounting box, and an active bevel gear is mounted after the output end of the servo motor passes through the front side of the upper filter box, a fixed plate is mounted on the top of the front side of the upper filter box, a rotating shaft is rotatably connected to the center of the fixed plate, a driven bevel gear meshing with the active bevel gear is mounted on the top of the rotating shaft, and an active spur gear meshing with a rotating gear ring is mounted on the bottom of the rotating shaft.

[0011] Preferably, the power assembly includes a No. 1 drive motor, which is installed at the center of the top surface inside the waterproof box. A No. 1 transmission gear and a driving pulley are installed on the output end of the No. 1 drive motor in sequence from top to bottom. A mounting plate is installed on the left side inside the waterproof box. A No. 2 transmission gear and a No. 3 transmission gear are rotatably connected to the bottom of the mounting plate through a rotating shaft. The No. 2 transmission gear is meshed with the No. 1 transmission gear, and the No. 2 transmission gear is meshed with the No. 3 transmission gear. Two transmission rods are symmetrically penetrated through the bottom of the waterproof box, and the transmission rods are rotatably connected to the waterproof box. A No. 4 transmission gear meshed with the No. 3 transmission gear is installed on the top of the transmission rod on the left side, and a driven pulley is installed on the top of the transmission rod on the right side. The driven pulley and the driving pulley are driven by a toothed belt, and an extrusion and stretching component is installed at the bottom of the transmission rod.

[0012] Preferably, the extrusion and stretching assembly includes a rotating block, which is fixedly sleeved at the bottom of a transmission rod, and two mounting ear plates are symmetrically installed on the transmission rod, the mounting ear plates are installed inside the mounting groove, and the rotating block is arranged between the two mounting ear plates, and four fixed blocks are evenly installed on the outer circumference of the rotating block, and a plurality of extrusion teeth are installed on one side of the four fixed blocks away from the rotating block, and the lengths of the extrusion teeth on the four fixed blocks increase sequentially.

[0013] Preferably, the winding mechanism includes two fixed arms, and the two fixed arms are symmetrically installed in the middle of the leakage bent pipe. A No. 2 driving motor is installed at the bottom of the fixed arm on the left, and a fixed shaft is fixedly connected to the output end of the No. 2 driving motor. The end of the fixed shaft away from the No. 2 driving motor is rotatably connected to the fixed arm on the right, and a winding disk for winding the filter bag is provided at the center sleeve of the fixed shaft, and a bag clamping plate is installed on the top of the winding disk, and the inside of the leakage bent pipe is connected to the upper leakage cone.

[0014] Preferably, a silo mechanism for storing filter bags is installed on the top of the rotating gear ring, and the silo mechanism includes a silo body, which is fixedly installed on the top of the rotating gear ring. An annular outlet is opened at the bottom of the inner circumference of the silo body, and a plurality of No. 3 springs are installed inside the silo body at the top of the annular outlet. An arc-shaped pressing plate for crimping and fixing the filter bag is installed at one end of the No. 3 spring.

[0015] Preferably, the scraper anti-blocking mechanism includes a lifting assembly and a telescopic scraper assembly, the telescopic scraper assembly is installed at the bottom of the lifting assembly, the lifting assembly includes a No. 2 hydraulic cylinder, the fixed end of the No. 2 hydraulic cylinder is installed at the center of the top surface inside the upper filter box, a connecting plate is installed at the bottom of the output end of the No. 2 hydraulic cylinder, a No. 3 fixing ring is installed at the bottom of the connecting plate, and a number of telescopic scraper assemblies are evenly installed at the bottom of the No. 3 fixing ring, and a pressing assembly is installed at the center of the bottom of the connecting plate.

[0016] Preferably, the telescopic scraper assembly includes a No. 1 telescopic rod, which is evenly installed at the bottom of the No. 3 fixing ring. Mounting blocks are installed at the bottom of the fixed end and the movable end of the No. 1 telescopic rod, and a No. 1 spring is installed between the two mounting blocks. A connecting block is installed at the bottom of the output end of the No. 1 telescopic rod, and a telescopic head is installed at the bottom of the connecting block. A rubber scraper plate is installed on the side of the telescopic head away from the No. 1 spring, and a serrated groove is provided on the side of the rubber scraper plate close to the No. 1 spring.

[0017] Preferably, the pressing assembly includes a No. 2 telescopic rod, the fixed end of the No. 2 telescopic rod is installed at the bottom center of the connecting plate, a fixing strip is installed at the bottom of the output end of the No. 2 telescopic rod, a No. 2 crimping ring is installed at the bottom of the fixing strip, a No. 2 spring is provided on the outer periphery of the No. 2 telescopic rod, and the No. 2 spring is installed between the connecting plate and the fixing strip.

[0018] Compared with the prior art, the present invention has the following beneficial effects: The utility model discloses a kind of invention that adopts filter bag to replace the traditional filtering mode, and the filter bag is installed on the upper leakage cone of material layer, and when material is added and filtered by the feed pipe fixedly installed on the upper filter box body, the rotating mechanism drives the upper leakage cone of material layer to rotate, and then drives the filter bag thereon to rotate, thereby realizing the peripheral side rotation filtration of filter bag and avoiding the single point clogging problem caused by filtering by using filter bag in fixed position. In addition, with the setting of the scraping material anti-blocking mechanism, the rubber scraping plate can adaptively contract and scrape material from top to bottom when the scraping material anti-blocking mechanism moves downward, thereby realizing the anti-blocking and cleaning of the upper filter bag, effectively reducing the probability of clogging of the upper filter bag, thereby reducing the replacement frequency of the filter bag. At the same time, the silo mechanism stores the filter bag, and when the filter bag needs to be replaced, the rotating bag squeezing mechanism is used to perform rotational squeezing and stretching, so that the blocked filter bag is stretched downward, and the unused filter bag stored in the silo mechanism is pulled out, thereby realizing the automatic replacement of the filter bag, without the need for frequent manual replacement, high working efficiency and reduced labor cost.

[0019] 2. The liquid of the present invention flows into the leakage elbow after being filtered by the upper filter bag, and then leaks out from the leakage elbow. After the filtrate flows down, it flushes the lower conical filter screen, flushes the solid suspended matter to the bottom of the filter screen, realizes the self-cleaning of the lower filter screen, prolongs the service life of the lower filter screen, and reduces the replacement frequency of the lower filter screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a stereoscopic diagram of the overall structure of the present invention.

[0021] Figure 2 It is a three-dimensional cross-sectional view of the overall structure of the present invention.

[0022] Figure 3 It is a three-dimensional partial cross-sectional view of the rotating mechanism and the leakage bent pipe of the present invention.

[0023] Figure 4 It is a three-dimensional diagram of the scraper material anti-blocking mechanism of the present invention.

[0024] Figure 5 For the present invention Figure 4 A magnified schematic diagram of area A in the middle.

[0025] Figure 6 It is a partially cutaway stereoscopic view of the rotary bag squeezing mechanism and the winding mechanism of the present invention.

[0026] Figure 7 It is a partial sectional front view of the rotary bag squeezing mechanism and winding mechanism of the present invention.

[0027] Figure 8 For the present invention Figure 7 Enlarged schematic diagram of area B in the middle.

[0028] Fig. 9 For the present invention Figure 7 Enlarged schematic diagram of area C in the middle.

[0029] Fig.10 It is a front cross-sectional view of the silo mechanism of the present invention.

[0030] In the figure: 1. Upper filter box; 2. Feed pipe; 3. Lower filter box; 4. Discharge pipe; 5. Rotating mechanism; 51. Driving assembly; 511. Servo motor; 512. Mounting box; 513. Active bevel gear; 514. Driven bevel gear; 515. Rotating shaft; 516. Active spur gear; 517. Fixed plate; 52. Rotating assembly; 521. Rotating gear ring; 522. Bearing seat; 523. Upper leakage cone; 6. Scraping and anti-blocking mechanism; 61. Lifting assembly; 611, No. 2 hydraulic cylinder; 612, connecting plate; 613, No. 3 fixing ring; 62, telescopic scraper assembly; 621, rubber scraper plate; 622, No. 1 telescopic rod; 623, connecting block; 624, telescopic head; 625, No. 1 spring; 626, mounting block; 627, sawtooth groove; 63, pressing assembly; 631, No. 2 telescopic rod; 632, No. 2 spring; 633, No. 2 crimping ring; 634, fixing strip; 7, silo mechanism; 71 , annular outlet; 72, silo body; 73, spring No. 3; 74, arc-shaped pressing plate; 8, rotating bag squeezing mechanism; 81, power assembly; 811, driven pulley; 812, No. 1 driving motor; 813, No. 1 transmission gear; 814, toothed belt; 815, driving pulley; 816, No. 2 transmission gear; 817, No. 3 transmission gear; 818, No. 4 transmission gear; 819, mounting plate; 82, extrusion and stretching assembly; 821, rotating block; 822, Fixed block; 823, extrusion teeth; 824, mounting ear plate; 83, waterproof box; 84, cushion block; 85, transmission rod; 9, winding mechanism; 91, fixed arm; 92, No. 2 driving motor; 93, winding reel; 94, bag clamping plate; 95, fixed shaft; 10, partition; 11, No. 1 fixing ring; 12, fixing rod; 13, lower layer leakage cone; 14, No. 1 crimping ring; 15, No. 2 fixing ring; 16, No. 1 hydraulic cylinder; 17, leakage elbow; 18, installation groove. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] See also Figure 1 and Figure 2A pretreatment device for lithium carbonate production, comprising an upper filter box 1, a lower filter box 3 is movably plugged at the bottom of the upper filter box 1, a lower leakage cone 13 is installed in the middle of the lower filter box 3, and the lower leakage cone 13 is covered with a conical filter cloth, a feed pipe 2 is installed on the top of the rear side of the upper filter box 1, a scraping and anti-blocking mechanism 6 for scraping impurities and preventing blockage is installed at the center of the top surface of the upper filter box 1, a partition 10 is installed in the middle of the upper filter box 1, and a rotating mechanism 5 is installed on the top of the partition 10, and a leakage elbow 17 is installed at the bottom of the rotating mechanism 5, A winding mechanism 9 is provided in the middle of the leakage bent pipe 17, and a mounting groove 18 is symmetrically provided at the bottom of the leakage bent pipe 17, and a rotating bag squeezing mechanism 8 for squeezing and stretching the filter bag is installed inside the mounting groove 18, and a discharge pipe 4 is installed at the bottom center of the lower filter box 3. During use of the present invention, the feed pipe 2 is first used for feeding, and the upper filter box 1 performs a filtering operation. The scraping and anti-blocking mechanism 6 is used for scraping and anti-blocking of the upper conical filter cloth, and the rotating mechanism 5 realizes the peripheral rotary filtration of the upper conical filter cloth. The rotating bag squeezing mechanism 8 is used to squeeze and pull the filter bag downward, thereby realizing the automatic replacement of the filter bag.

[0033] See also Figure 2 and Figure 3 The rotating mechanism 5 includes a driving assembly 51 and a rotating assembly 52. ​​The rotating assembly 52 is mounted on the top of the partition 10, and the driving assembly 51 is mounted on the front side of the rotating assembly 52. ​​The rotating assembly 52 includes a bearing seat 522, and the bearing seat 522 is mounted on the top of the partition 10. A rotating gear ring 521 is mounted on the top of the bearing seat 522, and an upper leakage cone 523 is mounted on the bottom of the inner side of the rotating gear ring 521. The upper leakage cone 523 is covered with a filter bag; the driving assembly 51 includes a mounting box 512, and the mounting box 512 is mounted on the upper A servo motor 511 is installed on the top of the front side of the upper filter box 1 and the bottom surface of the interior of the mounting box 512. A driving bevel gear 513 is installed after the output end of the servo motor 511 passes through the front side of the upper filter box 1. A fixing plate 517 is installed on the top of the front side of the interior of the upper filter box 1. The center of the fixing plate 517 is rotatably connected to a rotating shaft 515. A driven bevel gear 514 meshing with the driving bevel gear 513 is installed on the top of the rotating shaft 515, and a driving spur gear 516 meshing with a rotating gear ring 521 is installed on the bottom of the rotating shaft 515.

[0034] When the rotating mechanism 5 is used, the servo motor 511 is first started, and the output end of the servo motor 511 starts to rotate, which then drives the active bevel gear 513 to rotate, and then drives the driven bevel gear 514 to rotate, and then drives the rotating shaft 515 to rotate, and then drives the active spur gear 516 to rotate, and then drives the rotating gear ring 521 to rotate, and then drives the upper leakage cone 523 to rotate, and then drives the filter bag on the upper leakage cone 523 to rotate, so that when the feed pipe 2 is fed for pretreatment, the landing point of the material is different, and multi-point uniform filtration is achieved, avoiding the problem of unilateral blockage of the filter bag caused by single-point feeding and filtration.

[0035] See also Figure 2 and Fig.10 A silo mechanism 7 for storing filter bags is installed on the top of the rotating gear ring 521. The silo mechanism 7 includes a silo body 72. The silo body 72 is fixedly installed on the top of the rotating gear ring 521. An annular outlet 71 is opened at the bottom of the inner circumference of the silo body 72. A plurality of No. 3 springs 73 are installed inside the silo body 72 at the top of the annular outlet 71. An arc-shaped pressing plate 74 for crimping and fixing the filter bag is installed at one end of the No. 3 spring 73.

[0036] The silo body 72 in the silo mechanism 7 has filter bags for filtering stacked inside, the bottom of the filter bag extends from the bottom of the annular outlet 71, and the filter bag is then covered and fitted into the upper leakage cone 523, and then the filter bag is extended from the bottom of the leakage elbow 17, the filter bag is passed through the rotating bag squeezing mechanism 8, and then the bottom of the filter bag is fixed to the winding mechanism 9, thereby achieving the closing of the bottom of the filter bag, and the elastic force of the No. 3 spring 73 squeezes the arc-shaped pressing plate 74, and the filter bag is pressed against the inner side wall of the silo body 72 by the arc-shaped pressing plate 74, which is beneficial to applying pressure to the filter bag, thereby avoiding the problem of excessive extension of the filter bag when the rotating bag squeezing mechanism 8 squeezes and pulls the filter bag downward.

[0037] See also Figure 2 A sealing ring is provided at the connection between the lower filter box body 3 and the upper filter box body 1, a No. 1 fixing ring 11 is fixedly connected to the outer periphery of the bottom of the upper filter box body 1, a No. 2 fixing ring 15 is fixedly connected to the outer periphery of the bottom of the lower filter box body 3, two No. 1 hydraulic cylinders 16 are symmetrically installed on the top of the No. 2 fixing ring 15, and the tops of the two No. 1 hydraulic cylinders 16 are fixedly connected to the bottom of the No. 1 fixing ring 11, and three supporting legs are evenly installed on the bottom of the No. 2 fixing ring 15, and two fixing rods 12 are symmetrically installed inside the upper filter box body 1, and a No. 1 crimping ring 14 for crimping and fixing the conical filter bag is commonly installed at the bottom of the two fixing rods 12.

[0038] After being filtered by the upper filter bag, part of the filtrate leaks out from the holes in the upper leakage cone 523, and the leaked filtrate is secondary filtered through the conical filter cloth covering the lower leakage cone 13, thereby realizing secondary filtration of the filtrate. The filtered filtrate is discharged from the discharge pipe 4, and at the same time, part of the filtrate flows out from the bottom of the leakage elbow 17 after being filtered by the filter bag. As the rotating mechanism 5 rotates, the leakage elbow 17 is driven to rotate synchronously, and the outflowing filtrate rotates and flushes the conical filter cloth on the lower leakage cone 13, and flushes the solid suspended matter on the conical filter cloth to the bottom of the lower filter box 3, thereby realizing self-cleaning of the conical filter cloth on the lower leakage cone 13 and reducing the problem of clogging of the lower conical filter cloth. At the same time, the fixing rod 12 and the No. 1 crimping ring 14 are used to tightly crimp and fix the conical filter cloth to the lower leakage cone 13. This avoids the problem of the conical filter cloth being separated from the lower leakage cone 13 during the flushing process. When the conical filter cloth needs to be replaced, the output end of the No. 1 hydraulic cylinder 16 extends out, driving the No. 1 fixing ring 11 to rise, and then driving the upper filter box 1 to rise, loosening the plug-in fixation of the upper filter box 1 and the lower filter box 3. At this time, as the upper filter box 1 rises, the fixing rod 12 is driven to rise, and then the No. 1 crimping ring 14 is driven to rise, loosening the crimping fixation of the conical filter cloth. At this time, the conical filter cloth that needs to be replaced is removed, and the solid suspended matter flushed to the bottom of the lower filter box 3 is taken out, and a new conical filter cloth is replaced. Then the output end of the No. 1 hydraulic cylinder 16 moves downward, indirectly driving the No. 1 crimping ring 14 to move downward, and the new conical filter cloth is crimped and fixed to the lower leakage cone 13 by the No. 1 crimping ring 14.

[0039] See also Figure 2 and Figure 4 The scraper anti-blocking mechanism 6 includes a lifting component 61 and a telescopic scraper component 62. The telescopic scraper component 62 is installed at the bottom of the lifting component 61. The lifting component 61 includes a No. 2 hydraulic cylinder 611. The fixed end of the No. 2 hydraulic cylinder 611 is installed at the center of the top surface inside the upper filter box 1. A connecting plate 612 is installed at the bottom of the output end of the No. 2 hydraulic cylinder 611. A No. 3 fixing ring 613 is installed at the bottom of the connecting plate 612, and a number of telescopic scraper components 62 are evenly installed at the bottom of the No. 3 fixing ring 613. A pressing component 63 is installed at the center of the bottom of the connecting plate 612.

[0040] See also Figure 4 and Figure 5The telescopic scraper assembly 62 includes a No. 1 telescopic rod 622, which is evenly installed at the bottom of the No. 3 fixed ring 613. Mounting blocks 626 are installed at the bottom of the fixed end and the movable end of the No. 1 telescopic rod 622, and a No. 1 spring 625 is installed between the two mounting blocks 626. A connecting block 623 is installed at the bottom of the output end of the No. 1 telescopic rod 622, and a telescopic head 624 is installed at the bottom of the connecting block 623. A rubber scraper plate 621 is installed on the side of the telescopic head 624 away from the No. 1 spring 625, and a serrated groove 627 is provided on the side of the rubber scraper plate 621 close to the No. 1 spring 625.

[0041] See also Figure 4 The pressing assembly 63 includes a No. 2 telescopic rod 631, the fixed end of the No. 2 telescopic rod 631 is installed at the bottom center of the connecting plate 612, a fixing strip 634 is installed at the bottom of the output end of the No. 2 telescopic rod 631, a No. 2 crimping ring 633 is installed at the bottom of the fixing strip 634, and a No. 2 spring 632 is provided on the outer periphery of the No. 2 telescopic rod 631, and the No. 2 spring 632 is installed between the connecting plate 612 and the fixing strip 634.

[0042] When the scraper anti-blocking mechanism 6 is in use, if the filter bag on the upper layer is blocked, the output end of the No. 2 hydraulic cylinder 611 will drop, driving the connecting plate 612 to drop, and then driving the No. 3 fixing ring 613 to drop, and then driving the No. 2 telescopic rod 631 to drop, and then driving the fixing bar 634 to drop, and then driving the No. 2 crimping ring 633 to drop. At this time, the No. 2 crimping ring 633 is crimped to the bottom of the upper leakage cone 523, and the filter bag is tightly crimped and fixed to the upper leakage cone 523. As the output end of the No. 2 hydraulic cylinder 611 continues to descend, the No. 1 telescopic rod 622 is driven down, and at the same time the connecting block 623 is driven down, which indirectly drives the rubber scraper plate 621 to descend. The rubber scraper plate 621 fits the filter bag. As the downward pressure continues, the No. 1 telescopic rod 622 and the No. 1 spring 625 contract, realizing the adaptive contraction and downward scraping of the rubber scraper plate 621, and scraping off the solid suspended matter on the filter bag, which is beneficial to clearing the filter bag and reducing the probability of clogging of the upper filter bag.

[0043] See also Figure 2 , Figure 7 and Fig. 9 The rotary bag squeezing mechanism 8 includes a pad 84, which is symmetrically installed on the top of the output end of the leakage elbow 17. A waterproof box 83 is commonly provided on the top of the two pads 84. A power component 81 is installed inside the waterproof box 83, and an extrusion and stretching component 82 is installed at the bottom of the power component 81.

[0044] See also Figure 6 , Figure 7 and Figure 8The power assembly 81 includes a No. 1 drive motor 812, which is installed at the center of the top surface of the waterproof box 83. The No. 1 drive motor 812 output end is sequentially installed with a No. 1 transmission gear 813 and a driving pulley 815 from top to bottom. A mounting plate 819 is installed on the left side of the waterproof box 83. The bottom of the mounting plate 819 is sequentially connected to a No. 2 transmission gear 816 and a No. 3 transmission gear 817 through a rotating shaft. The No. 2 transmission gear 816 is meshed with the No. 1 transmission gear 813, and the No. 2 transmission gear 817 is rotated in sequence. Gear 816 is meshed with the third transmission gear 817. Two transmission rods 85 are symmetrically and movablely penetrated at the bottom of the waterproof box 83. The transmission rod 85 is rotationally connected to the waterproof box 83. A fourth transmission gear 818 meshing with the third transmission gear 817 is installed on the top of the transmission rod 85 on the left side. A driven pulley 811 is installed on the top of the transmission rod 85 on the right side. The driven pulley 811 and the driving pulley 815 are transmitted through a toothed belt 814. An extrusion and stretching component 82 is installed at the bottom of the transmission rod 85.

[0045] See also Figure 6 and Fig. 9 The extrusion and stretching assembly 82 includes a rotating block 821, which is fixedly sleeved at the bottom of the transmission rod 85. The transmission rod 85 is symmetrically equipped with two mounting ear plates 824, which are installed inside the mounting groove 18, and the rotating block 821 is arranged between the two mounting ear plates 824. Four fixed blocks 822 are evenly installed on the outer circumference of the rotating block 821. A plurality of extrusion teeth 823 are installed on the side of the four fixed blocks 822 away from the rotating block 821, and the lengths of the extrusion teeth 823 on the four fixed blocks 822 increase sequentially.

[0046] During the use of the rotary bag squeezing mechanism 8, when the upper filter bag still cannot be effectively cleared after being scraped by the scraping and anti-blocking mechanism 6, the No. 1 driving motor 812 in the rotary bag squeezing mechanism 8 is turned on, and the output end of the No. 1 driving motor 812 rotates, while driving the No. 1 transmission gear 813 and the active pulley 815 to rotate. The rotation of the No. 1 transmission gear 813 drives the No. 2 transmission gear 816 to rotate, and indirectly drives the No. 4 transmission gear 818 to rotate, thereby driving the transmission rod 85 on the left side to rotate. At the same time, the rotation of the active pulley 815 drives the toothed belt 814 to rotate, and then drives the driven pulley 811 to rotate, and then drives the transmission rod 85 on the right side to rotate, and the rotation directions of the transmission rods 85 on both sides are opposite, thereby driving the rotations on both sides. The movable block 821 rotates synchronously, and then drives the fixed block 822 and the extrusion teeth 823 to rotate. The rotation of the extrusion teeth 823 is used to pull the filter bag downward, so that the blocked filter bag is pulled from the upper leakage cone 523 into the leakage elbow 17, and the unused filter bags stored in the silo body 72 are covered on the upper leakage cone 523, thereby realizing automatic replacement of the filter bag without manual replacement, and having high work efficiency. The extrusion teeth 823 on the four fixed blocks 822 on the outer circumference of the rotating block 821 have different lengths, so that during the process of extrusion and downward stretching, the opening of the filter bag at the bottom of the leakage elbow 17 is different, and the extrusion teeth 823 with different lengths are convenient for squeezing the filtrate in the filter bag during the extrusion process, thereby reducing the residual filtrate in the filter bag.

[0047] See also Figure 2 , Figure 5 and Figure 6 The winding mechanism 9 includes a fixed arm 91. There are two fixed arms 91. The two fixed arms 91 are symmetrically installed in the middle of the leakage bent pipe 17. A No. 2 driving motor 92 is installed at the bottom of the fixed arm 91 on the left. A fixed shaft 95 is fixedly connected to the output end of the No. 2 driving motor 92. The end of the fixed shaft 95 away from the No. 2 driving motor 92 is rotatably connected to the fixed arm 91 on the right. A winding disk 93 for winding the filter bag is provided at the center of the fixed shaft 95, and a bag clamping plate 94 is installed on the top of the winding disk 93. The inside of the leakage bent pipe 17 is connected to the upper leakage cone 523.

[0048] During the use of the winding mechanism 9, when the rotating bag squeezing mechanism 8 squeezes and stretches the filter bag downward, the output end of the No. 2 drive motor 92 rotates, which then drives the fixed shaft 95 to rotate, and then drives the winding disk 93 to rotate and wind. The filter bag that has been squeezed and replaced is wound up using the winding disk 93. While winding up, the filter bag is squeezed, which is beneficial to squeezing out the residual filtrate in the filter bag and improving the filtrate yield. At the same time, when the filter bag is wound, the output end of the No. 1 hydraulic cylinder 16 extends out, loosens the plug-in fixation of the upper filter box 1 and the lower filter box 3, and then removes the filter bag wound on the winding disk 93.

[0049] Working principle: During use of the present invention, the top cover on the top of the upper filter box 1 is first opened, and then the new filter bag stored in the silo body 72 is covered on the upper leakage cone 523, and then passed through the leakage elbow 17 and the rotating bag squeezing mechanism 8 and fixed to the winding mechanism 9. At this time, the feed pipe 2 is used to add material. At the same time, the rotating mechanism 5 drives the upper leakage cone 523 to rotate, and then drives the filter bag to rotate, thereby realizing rotary multi-point filtration, avoiding the problem of unilateral blockage caused by unilateral filtration on the filter bag. Most of the filtrate after preliminary filtration by the filter bag leaks out from the holes on the upper leakage cone 523 and leaks to the conical filter cloth on the lower leakage cone 13 for secondary filtration, thereby improving the filtration effect. Part of the filtrate flows into the leakage elbow 17 after being filtered by the upper filter bag, and after flowing out from the bottom of the leakage elbow 17, the conical filter cloth on the lower leakage cone 13 is rotated and flushed, thereby realizing self-cleaning of the conical filter cloth and reducing the conical filter of the lower layer. The probability of cloth clogging is that the filtrate after being filtered by the lower conical filter cloth is discharged from the discharge pipe 4. When the filter bag on the upper layer of the upper leakage cone 523 needs to be cleaned, the scraper anti-blocking mechanism 6 moves downward at this time, and the filter bag is scraped adaptively by contraction, which is beneficial to clearing the filter bag. Combined with the rotating feeding method, the probability of clogging of the upper filter bag is further reduced. When the upper filter bag cannot be cleared and needs to be replaced, the rotary bag squeezing mechanism 8 rotates downward to squeeze and pull, and the unused filter bag is covered on the upper leakage cone 523, thereby realizing automatic replacement of the filter bag, without the need for frequent manual replacement, and having high efficiency. When the rotary bag squeezing mechanism 8 squeezes and stretches downward, the winding mechanism 9 rolls up the filter bag. During the rolling process, the filtrate in the filter bag is squeezed, thereby improving the yield of the filtrate. The No. 3 spring 73 and the arc-shaped pressing plate 74 in the silo mechanism 7 press the filter bag tightly, thereby avoiding the problem of excessive pulling out of the filter bag when the rotary bag squeezing mechanism 8 rotates and stretches downward.

[0050] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A pretreatment device for lithium carbonate production, comprising an upper filter housing (1), characterized in that: The bottom of the upper filter box (1) is movably connected to the lower filter box (3), a lower leakage cone (13) is installed in the middle of the lower filter box (3), and the lower leakage cone (13) is covered with a conical filter cloth, a feed pipe (2) is installed on the top of the rear side of the upper filter box (1), a scraping and anti-blocking mechanism (6) for scraping impurities and preventing blockage is installed in the center of the top surface of the upper filter box (1), and a filter element (6) is installed in the middle of the upper filter box (1). A partition (10) is provided, and a rotating mechanism (5) is installed on the top of the partition (10), a leakage bent pipe (17) is installed on the bottom of the rotating mechanism (5), a winding mechanism (9) is arranged in the middle of the leakage bent pipe (17), a mounting groove (18) is symmetrically opened at the bottom of the leakage bent pipe (17), and a rotating bag squeezing mechanism (8) for squeezing and stretching the filter bag is installed inside the mounting groove (18), and a discharge pipe (4) is installed at the bottom center of the lower filter box (3); The rotating mechanism (5) comprises a driving assembly (51) and a rotating assembly (52), wherein the rotating assembly (52) is mounted on the top of the partition (10), and the driving assembly (51) is mounted on the front side of the rotating assembly (52), and the rotating assembly (52) comprises a bearing seat (522), wherein the bearing seat (522) is mounted on the top of the partition (10), a rotating gear ring (521) is mounted on the top of the bearing seat (522), and an upper material leakage cone (523) is mounted on the inner bottom of the rotating gear ring (521), and a filter bag is covered on the upper material leakage cone (523); The rotary bag squeezing mechanism (8) comprises a cushion block (84) which is symmetrically mounted on the top of the leaking bent pipe (17). A waterproof box (83) is provided on the top of the two cushion blocks (84). A power assembly (81) is installed inside the waterproof box (83), and an extrusion and stretching assembly (82) is installed at the bottom of the power assembly (81).

2. A pretreatment device for lithium carbonate production according to claim 1, characterized in that: A sealing ring is provided at the connection between the lower filter box (3) and the upper filter box (1); a freely openable top cover is installed on the top of the upper filter box (1); a No. 1 fixing ring (11) is fixedly connected to the periphery of the bottom of the upper filter box (1); a No. 2 fixing ring (15) is fixedly connected to the periphery of the bottom of the lower filter box (3); two No. 1 hydraulic cylinders (16) are symmetrically installed on the top of the No. 2 fixing ring (15); the tops of the two No. 1 hydraulic cylinders (16) are fixedly connected to the bottom of the No. 1 fixing ring (11); three supporting legs are evenly installed on the bottom of the No. 2 fixing ring (15); two fixing rods (12) are symmetrically installed inside the upper filter box (1); and a No. 1 crimping ring (14) for crimping and fixing the conical filter bag is commonly installed at the bottom of the two fixing rods (12).

3. A pretreatment device for lithium carbonate production according to claim 1, characterized in that: The driving assembly (51) comprises a mounting box (512), the mounting box (512) being mounted on the top of the front side of the upper filter housing (1), and a servo motor (511) being mounted on the bottom surface of the mounting box (512), an output end of the servo motor (511) penetrating the front side of the upper filter housing (1) and a driving bevel gear (513) being mounted thereafter, a fixing plate (517) being mounted on the top of the front side of the upper filter housing (1), a rotating shaft (515) being rotatably connected to the center of the fixing plate (517), a driven bevel gear (514) meshing with the driving bevel gear (513) being mounted on the top of the rotating shaft (515), and a driving spur gear (516) meshing with a rotating gear ring (521) being mounted on the bottom of the rotating shaft (515).

4. A pretreatment device for lithium carbonate production according to claim 1, characterized in that: The power assembly (81) includes a No. 1 driving motor (812), which is installed at the center of the top surface inside the waterproof box (83). The output end of the No. 1 driving motor (812) is installed with a No. 1 transmission gear (813) and a driving pulley (815) in sequence from top to bottom. A mounting plate (819) is installed on the left side inside the waterproof box (83). The bottom of the mounting plate (819) is connected to a No. 2 transmission gear (816) and a No. 3 transmission gear (817) in sequence through a rotating shaft. The No. 2 transmission gear (816) is meshed with the No. 1 transmission gear (813), and the No. 2 transmission gear (817) is rotated in sequence. The wheel (816) is meshed with the third transmission gear (817). Two transmission rods (85) are symmetrically and movably penetrated at the bottom of the waterproof box (83). The transmission rods (85) are rotatably connected with the waterproof box (83). A fourth transmission gear (818) meshed with the third transmission gear (817) is installed on the top of the transmission rod (85) on the left side. A driven pulley (811) is installed on the top of the transmission rod (85) on the right side. The driven pulley (811) and the driving pulley (815) are driven by a toothed belt (814). An extrusion and stretching component (82) is installed at the bottom of the transmission rod (85).

5. A pretreatment device for lithium carbonate production according to claim 4, characterized in that: The extrusion and stretching assembly (82) comprises a rotating block (821), the rotating block (821) being fixedly sleeved at the bottom of a transmission rod (85), the transmission rod (85) being symmetrically mounted with two mounting ear plates (824) in the upper and lower directions, the mounting ear plates (824) being mounted inside the mounting groove (18), and the rotating block (821) being arranged between the two mounting ear plates (824), four fixed blocks (822) being evenly mounted on the outer circumference of the rotating block (821), a plurality of extrusion teeth (823) being mounted on the side of the four fixed blocks (822) away from the rotating block (821), and the lengths of the extrusion teeth (823) on the four fixed blocks (822) increasing in sequence.

6. A pretreatment device for lithium carbonate production according to claim 1, characterized in that: The winding mechanism (9) comprises a fixed arm (91), wherein there are two fixed arms (91), and the two fixed arms (91) are symmetrically mounted at the middle of the leakage bent pipe (17). A second drive motor (92) is mounted at the bottom of the fixed arm (91) located on the left side, and a fixed shaft (95) is fixedly connected to the output end of the second drive motor (92). An end of the fixed shaft (95) away from the second drive motor (92) is rotatably connected to the fixed arm (91) located on the right side. A winding disc (93) for winding the filter bag is sleeved at the center of the fixed shaft (95), and a bag clamping plate (94) is mounted on the top of the winding disc (93). The interior of the leakage bent pipe (17) is connected to the upper leakage cone (523).

7. A pretreatment device for lithium carbonate production according to claim 1, characterized in that: A silo mechanism (7) for storing filter bags is installed on the top of the rotating gear ring (521). The silo mechanism (7) includes a silo body (72). The silo body (72) is fixedly installed on the top of the rotating gear ring (521). An annular outlet (71) is opened at the bottom of the inner circumference of the silo body (72). A plurality of No. 3 springs (73) are installed inside the silo body (72) at the top of the annular outlet (71). An arc-shaped pressing plate (74) for crimping and fixing the filter bag is installed at one end of the No. 3 spring (73).

8. A pretreatment device for lithium carbonate production according to claim 1, characterized in that: The scraper anti-blocking mechanism (6) comprises a lifting component (61) and a telescopic scraper component (62), the telescopic scraper component (62) being mounted at the bottom of the lifting component (61), the lifting component (61) comprising a No. 2 hydraulic cylinder (611), the fixed end of the No. 2 hydraulic cylinder (611) being mounted at the center of the internal top surface of the upper filter box (1), a connecting plate (612) being mounted at the bottom of the output end of the No. 2 hydraulic cylinder (611), a No. 3 fixing ring (613) being mounted at the bottom of the connecting plate (612), and a plurality of telescopic scraper components (62) being evenly mounted at the bottom of the No. 3 fixing ring (613), and a material pressing component (63) being mounted at the center of the bottom of the connecting plate (612).

9. A pretreatment device for lithium carbonate production according to claim 8, characterized in that: The telescopic scraper assembly (62) comprises a No. 1 telescopic rod (622), which is evenly mounted on the bottom of a No. 3 fixed ring (613), a mounting block (626) is mounted on the bottom of both the fixed end and the movable end of the No. 1 telescopic rod (622), and a No. 1 spring (625) is mounted between the two mounting blocks (626), a connecting block (623) is mounted on the bottom of the output end of the No. 1 telescopic rod (622), a telescopic head (624) is mounted on the bottom of the connecting block (623), a rubber scraper plate (621) is mounted on the side of the telescopic head (624) away from the No. 1 spring (625), and a sawtooth groove (627) is provided on the side of the rubber scraper plate (621) close to the No. 1 spring (625).

10. A pretreatment device for lithium carbonate production according to claim 8, characterized in that: The pressing assembly (63) comprises a No. 2 telescopic rod (631), the fixed end of the No. 2 telescopic rod (631) is installed at the bottom center of the connecting plate (612), a fixing strip (634) is installed at the bottom of the output end of the No. 2 telescopic rod (631), a No. 2 crimping ring (633) is installed at the bottom of the fixing strip (634), a No. 2 spring (632) is sleeved on the outer periphery of the No. 2 telescopic rod (631), and the No. 2 spring (632) is installed between the connecting plate (612) and the fixing strip (634).

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