Ternary precursor washing wastewater treatment device

Abstract

The invention relates to the field of battery wastewater treatment equipment, in particular to a ternary precursor washing wastewater treatment device which comprises a reaction tank, a sealing cover is connected to the top of the reaction tank, a water inlet and an adding port are symmetrically formed in the two sides of the top of the sealing cover, a plurality of supporting frames are evenly arranged at the bottom of the reaction tank in the circumferential direction, and a water outlet is formed in the side face of the reaction tank. A collecting mechanism is arranged at the bottom of the reaction tank, a filter cartridge is connected above the collecting mechanism, a stirring mechanism is jointly arranged between the sealing cover and the filter cartridge, fan-shaped channels are uniformly arranged in the reaction tank in the circumferential direction, and a limiting mechanism for limiting the filter cartridge is jointly arranged between the fan-shaped channels and the sealing cover. According to the invention, the arc-shaped sleeve is used for capturing reacted products and part of floccules in the washing wastewater, and then the inner push plate is used for pushing part of products and floccules into the filter cartridge until the products and floccules move into the fan-shaped channel; therefore, the situation that the reaction between the washing wastewater and various reagents is affected due to the fact that more products and floccules exist in the washing wastewater is avoided.

Description

Technical Field

[0001] The invention relates to the field of battery wastewater treatment equipment, and in particular to a ternary precursor washing wastewater treatment device. Background Art

[0002] Ternary precursor washing wastewater (hereinafter referred to as washing wastewater) is the wastewater generated when washing the synthesized product during the production process of lithium-ion battery ternary precursors. In order to ensure that the discharged wastewater meets the discharge requirements before discharging the washing wastewater, and based on the consideration of environmental protection and resource recycling, it is necessary to reduce the content of metal ions and harmful components in the washing wastewater through various treatment methods.

[0003] There are many ways to treat washing wastewater. Since the metal ion content in washing wastewater is high, it is particularly important to quickly remove the heavy metal ions in the washing wastewater by chemical precipitation. Among the equipment that actually performs chemical precipitation on washing wastewater, there is an invention authorization patent with publication number CN114956291B that discloses a special equipment for treating battery wastewater. This technical solution stirs the battery wastewater in the upper and lower parts of the tank body by rotating the forward and reverse agitators in opposite directions, which is convenient for the coagulant to fully blend with the battery wastewater and improves work efficiency. The coagulant is pre-stored in the material box, and there is no need to add it manually, which is easy to operate.

[0004] Although the above-mentioned equipment can stir and mix with a forward-rotating agitator and a reverse-rotating agitator, this mixing method is relatively simple, and the forward-rotating agitator and the reverse-rotating agitator of the above-mentioned invention are only aimed at the area where the coagulant is added, and it is impossible to achieve the mixing of the washing wastewater and the coagulant in the entire equipment, resulting in a decrease in the efficiency of chemical precipitation of the washing wastewater; in addition, since in the process of chemical precipitation of the washing wastewater, not only coagulants are added, but also precipitants and flocculants are present, a large amount of precipitates and floccules will be produced after the washing wastewater reacts with various reagents. This part of the precipitates and floccules will continue to exist in the mixture of washing wastewater and various reagents as the forward-rotating agitator and the reverse-rotating agitator rotate, affecting the reaction efficiency of the washing wastewater and various reagents. Summary of the invention

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: a ternary precursor washing wastewater treatment device, including a reaction tank, a closing cover is connected to the top of the reaction tank, water inlets and addition ports are symmetrically arranged on both sides of the top of the closing cover, a plurality of support frames are evenly arranged circumferentially at the bottom of the reaction tank, and a water outlet is arranged on the side of the reaction tank, characterized in that a collecting mechanism is arranged at the bottom of the reaction tank, a filter cartridge is connected above the collecting mechanism, a stirring mechanism is commonly arranged between the closing cover and the filter cartridge, fan-shaped channels are evenly arranged circumferentially in the reaction tank, and a limiting mechanism for limiting the filter cartridge is commonly arranged in the fan-shaped channel and between the closing cover; the stirring mechanism includes a motor installed on the top of the closing cover through a motor box, and the output of the motor The end passes through the closing cover and is installed with a central axis. A transmission component for driving the filter cartridge to rotate is arranged between the bottom of the central axis and the filter cartridge. A fixed plate is fixed on the central axis and on the upper side of the transmission component. A triangular stirring block is fixed on each side of the fixed plate. The triangular stirring block is provided with an inclined surface for easy stirring. A flipping component is arranged on the central axis and on the upper side of the fixed plate corresponding to each fan-shaped channel. The washing wastewater and various reagents are flipped by the flipping component, and the washing wastewater and various reagents are evenly mixed in cooperation with the triangular stirring block; the collecting mechanism includes a truncated cone-shaped collecting bucket arranged at the bottom of the reaction tank, a discharge port is fixed at the bottom of the collecting bucket, a horizontal plate is fixed in the collecting bucket, and the top of the horizontal plate is connected to the bottom of the filter cartridge through a positioning key.

[0006] Preferably, the transmission component includes a limiting sleeve fixed on the filter cartridge and sleeved on the side of the central axis, a lower extension column is fixed at the bottom of the central axis, an arc-shaped plate is fixed at the bottom of the lower extension column, a lower pressure rod is fixed on the side of the arc-shaped plate, and a plurality of groups of limiting grooves are evenly arranged in the circumferential direction of the limiting sleeve, and each group of limiting grooves is connected to a compressed inclined block through an elastic telescopic rod, and the limiting sleeve and the filter cartridge are driven to rotate by the rotation of the lower pressure rod before the lower pressure rod presses down the compressed inclined block.

[0007] Preferably, an inclined scraper is provided on the side of the filter cartridge corresponding to each sector-shaped channel position, and the inclined scraper is driven by the rotation of the filter cartridge to scrape the side wall of the sector-shaped channel.

[0008] Preferably, the flipping member includes a rotating ring rotatably mounted on the central axis, a limiting plate is fixed on the side of the rotating ring corresponding to each fan-shaped channel, each limiting plate is fixedly connected to the closing cover by a fixing rod, each limiting plate is provided with a radial slide groove, and each radial slide groove is provided with a pushing structure, through which the product of the reaction between the washing wastewater and various reagents is pushed toward the filter cartridge and the flocs in the product are filtered into the fan-shaped channel through the filter cartridge.

[0009] Preferably, the pushing structure includes a sliding column connected to a radial sliding groove through a radial spring, a cylinder is fixed at the bottom of the sliding column, the sliding column is symmetrically connected to an inner push plate through a connecting rod on the side of the sliding column close to the filter cartridge, a radial sliding rod is symmetrically slidable up and down through the sliding column, a square plate is fixed between the two radial sliding rods, an elastic telescopic rod is connected between the square plate and the sliding column, an arc sleeve is fixed to one end of the two radial sliding rods close to the filter cartridge, the arc sleeve is slidably connected to the connecting rod and the limit plate, and the inner push plate slides in the arc sleeve.

[0010] Preferably, a plurality of vertical rods are evenly fixed around the bottom of the closure cover, a spiral scraper is fixed at the bottom of the vertical rods, and the spiral scraper cooperates with the inner push plate and the arc sleeve to push and filter the products of the reaction between the washing wastewater and various reagents.

[0011] Preferably, the limiting mechanism includes a positioning clamp evenly fixed circumferentially at the bottom of the closing cover. The positioning clamp is arc-shaped as a whole and its cross-section consists of a U-shaped part and a vertical part perpendicular to the horizontal section of the U-shaped part. The U-shaped part of the positioning clamp is used to position the top of the filter cartridge.

[0012] Preferably, the limiting mechanism also includes a plurality of alignment components arranged in the reaction tank and corresponding to each fan-shaped channel, the alignment component includes an arc groove opened on the side of the fan-shaped channel, a connecting block is connected to the arc groove through a slider, an inner spring is connected between the slider and the arc groove, an alignment groove is opened in the connecting block, an L-shaped alignment rod is fixed on the side of the filter cartridge and at the position corresponding to the alignment groove, and a stabilizing structure is symmetrically arranged in the connecting block and on both sides of the alignment groove.

[0013] Preferably, the stabilizing structure comprises a connecting groove which is opened in the connecting block and communicated with the bottom of the alignment groove, and a trapezoidal clamping block is connected to the connecting groove via a compression spring.

[0014] Preferably, a connecting structure is evenly arranged circumferentially between the closing cover and the reaction tank, and the connecting structure includes circumferential plates evenly arranged circumferentially on the side of the closing cover, and matching plates are fixed at positions corresponding to the circumferential plates on the top of the reaction tank, and each matching plate is fixedly connected to the circumferential plate at the corresponding position by bolts and nuts.

[0015] The beneficial effects of the present invention are as follows: 1. The present invention first captures the products and part of the floccules after the reaction of part of the washing wastewater with various reagents through the arc sleeve, and then uses the inner push plate to push the part of the products and floccules to the filter cartridge until they move into the fan-shaped channel, thereby avoiding the situation where there are too many products and floccules in the washing wastewater and affecting the reaction of the washing wastewater with various reagents, and the spiral scraper can scrape off the part of the products and floccules at the position that the arc sleeve and the inner push plate cannot handle and transfer them to the position that can be handled, thereby comprehensively pushing the part of the products and floccules into the fan-shaped channel.

[0016] 2. The present invention uses a limiting sleeve to stabilize the filter cartridge, and the limiting sleeve can also cooperate with the limiting mechanism to stabilize the filter cartridge on the center axis, thereby ensuring that the stirring mechanism can stir stably; in addition, the filter cartridge is stabilized by a combination of a positioning clip and an alignment component, thereby ensuring the overall stability of the filter cartridge during rotation, and the positioning clip and the alignment component can cooperate with the positioning key to quickly install and disassemble the filter cartridge, thereby facilitating the disassembly of the filter cartridge after long-term use and subsequent maintenance and replacement.

[0017] 3. The present invention adopts a stirring mechanism to stir and mix various reagents and washing wastewater. At the same time, the turning component is pushed by the triangular stirring block to quickly turn over and mix the washing wastewater and various reagents, which can make the washing wastewater and various reagents mixed more evenly. The washing wastewater and various reagents are quickly turned over by the turning component on the upper side, and the washing wastewater and various reagents are stirred by the continuously rotating triangular stirring block on the lower side, thereby improving the mixing efficiency and coverage of the washing wastewater and various reagents. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0019] Figure 1 It is a schematic diagram of the structure from a first perspective after a portion of the reaction tank and the sealing cover are cut away.

[0020] Figure 2 It is a second-view structural schematic diagram of the present invention after a portion of the reaction tank and the sealing cover are cut away.

[0021] Figure 3 It is a schematic diagram of the internal structure of the present invention after partially removing the reaction tank, the filter cartridge and the closing cover.

[0022] Figure 4 yes Figure 3 Enlarged view of point A in the middle.

[0023] Figure 5 It is a three-dimensional cross-sectional display diagram of the transmission component of the present invention.

[0024] Figure 6 It is a partial cross-sectional view of the present invention as a whole along the water outlet.

[0025] Figure 7 yes Figure 6 Enlarged view of point B in the middle.

[0026] Figure 8 yes Figure 6 Enlarged view of point C in the middle.

[0027] Fig. 9 It is a partial cross-sectional view along the connecting block of the present invention.

[0028] Fig.10 It is a partial cross-sectional view along the positioning key of the present invention.

[0029] In the figure: 1, reaction tank; 11, closing cover; 111, circumferential plate; 112, coordination plate; 12, water inlet; 13, adding port; 14, support frame; 15, water outlet; 2, collecting mechanism; 21, collecting bucket; 211, discharge port; 212, horizontal plate; 22, positioning key; 3, filter cartridge; 31, fan-shaped channel; 311, oblique scraper; 4, stirring mechanism; 41, motor; 411, middle shaft; 42, transmission member; 421, limit sleeve; 422, lower extension column; 423, arc plate; 424, downward pressure rod; 425, pressure inclined block; 43, fixed plate; 431, triangular stirring block; 44, flipping member; 441, rotating ring; 442, limiting plate; 443, fixed rod; 444, sliding column; 445, inner push plate; 446, square plate; 447, arc sleeve; 448, vertical rod; 449, spiral scraper; 5, limiting mechanism; 51, positioning clamp; 52, alignment member; 521, connecting block; 522, alignment groove; 523, L-shaped alignment rod; 524, trapezoidal clamp block. DETAILED DESCRIPTION

[0030] The embodiments of the present invention are described in detail below. The embodiments described below are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention. If no specific techniques or conditions are specified in the embodiments, the techniques or conditions described in the literature in the art or the product specifications are used.

[0031] See also Figure 1 , Figure 2 and Figure 6 A ternary precursor washing wastewater treatment device comprises a reaction tank 1, a closing cover 11 is connected to the top of the reaction tank 1, a water inlet 12 and a adding port 13 are symmetrically arranged on both sides of the top of the closing cover 11, a plurality of support frames 14 are evenly arranged circumferentially at the bottom of the reaction tank 1, a water outlet 15 is arranged on the side of the reaction tank 1, a collecting mechanism 2 is arranged at the bottom of the reaction tank 1, a filter cartridge 3 is connected above the collecting mechanism 2, a stirring mechanism 4 is commonly arranged between the closing cover 11 and the filter cartridge 3, a fan-shaped channel 31 is evenly arranged circumferentially in the reaction tank 1, and a limiting mechanism 5 for limiting the filter cartridge 3 is commonly arranged in the fan-shaped channel 31 and between the closing cover 11.

[0032] The collecting mechanism 2 includes a truncated cone-shaped collecting bucket 21 disposed at the bottom of the reaction tank 1 , a discharge port 211 is fixed at the bottom of the collecting bucket 21 , a horizontal plate 212 is fixed inside the collecting bucket 21 , and the top of the horizontal plate 212 is connected to the bottom of the filter cartridge 3 via a positioning key 22 .

[0033] The present invention quickly positions the filter cartridge 3 through the limiting mechanism 5, so that the filter cartridge 3 can stably filter the products of the reaction of the washing wastewater and various reagents in the reaction tank 1. In order for the filter cartridge 3 to quickly and effectively filter the products of the reaction of the washing wastewater and various reagents, the stirring mechanism 4 is used to stir and push the products of the reaction of the washing wastewater and various reagents toward the filter cartridge 3, so that the flocculent part in the product is away from the reaction area of ​​the washing wastewater and various reagents, thereby avoiding the situation that the reaction efficiency of the washing wastewater and various reagents is blocked by the flocculent part in the product and reduced.

[0034] Specifically, first, the wastewater generated during the washing process of the ternary precursor is transported to the reaction tank 1 through an external conveying pipeline and a conveying pump, and then the pH value of the washing wastewater is adjusted according to the selected precipitant. After the adjustment is completed, the precipitant, the compounding agent and the flocculant are added to the reaction tank 1 through the addition port 13, and then the stirring mechanism 4 is controlled to continuously stir the various reagents and the washing wastewater in the reaction tank 1, so that the washing wastewater and the various reagents are fully mixed. In the mixing process, the washing wastewater and the various reagents will generate precipitates and flocs. At this time, through the cooperation of the stirring mechanism 4 and the filter cartridge 3, part of the precipitates and flocs can be pushed into the fan-shaped channel 31, and gradually move downward in the fan-shaped channel 31 until they move to the collecting mechanism 2. After the various reagents and the washing wastewater in the reaction tank 1 react completely, the treated washing wastewater is first discharged through the outlet 15, and then the precipitates and flocs are taken out at the outlet 211.

[0035] In this embodiment, if Figure 6 As shown, in order to prevent partial precipitation and floccules from being mixed with the washing wastewater again through the water outlet 15 , a filter plate with smaller filter holes needs to be installed at the water outlet 15 .

[0036] See also Figure 1 , Figure 2 and Figure 3 A connection structure is evenly arranged circumferentially between the closing cover 11 and the reaction tank 1, and the connection structure includes a circumferential plate 111 evenly arranged circumferentially on the side of the closing cover 11, and a coordination plate 112 is fixed at the position corresponding to the circumferential plate 111 on the top of the reaction tank 1, and each coordination plate 112 is fixedly connected to the circumferential plate 111 at the corresponding position by bolts and nuts.

[0037] The connection structure enables the stirring mechanism 4 to be in a stable state during the process of stirring and mixing various reagents and washing wastewater in the reaction tank 1, thereby ensuring stable stirring and mixing. At the same time, the connection structure can also stably connect the closing cover 11 and the reaction tank 1, ensuring the sealing degree of the closing cover 11 and the reaction tank 1 during the process of mixing various reagents and washing wastewater, thereby preventing leakage of various reagents and washing wastewater during the reaction process.

[0038] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 6 The stirring mechanism 4 includes a motor 41 installed on the top of the closing cover 11 through a motor box, the output end of the motor 41 passes through the closing cover 11 and is installed with a central axis 411, a transmission component 42 for driving the filter cartridge 3 to rotate is arranged between the bottom of the central axis 411 and the filter cartridge 3, a fixed plate 43 is fixed on the central axis 411 and located on the upper side of the transmission component 42, a triangular stirring block 431 is fixed on each side of the fixed plate 43, and an inclined surface for stirring is arranged on the triangular stirring block 431, and a flipping component 44 is arranged on the central axis 411 and located on the upper side of the fixed plate 43 corresponding to each fan-shaped channel 31, the washing wastewater and various reagents are flipped by the flipping component 44, and the washing wastewater and various reagents are evenly mixed in cooperation with the triangular stirring block 431.

[0039] The flipping member 44 includes a rotating ring 441 rotatably mounted on the central axis 411, and a limiting plate 442 is fixed to the side of the rotating ring 441 corresponding to each fan-shaped channel 31. Each limiting plate 442 is fixedly connected to the closing cover 11 by a fixing rod 443. A radial sliding groove is opened on each limiting plate 442, and a pushing structure is arranged in each radial sliding groove.

[0040] The stirring mechanism 4 is used to stir various reagents and washing wastewater and make the two fully mixed. At the same time, the turning component 44 is pushed by the triangular stirring block 431 to quickly turn over and mix the washing wastewater and various reagents. Not only can the washing wastewater and various reagents be mixed more evenly, but also the products of the reaction of various reagents with washing wastewater can be pushed to the filter cartridge 3 through the pushing structure and part of the products and flocs can be filtered into the fan-shaped channel 31 through the filter cartridge 3, so as to facilitate part of the products and flocs to stay away from the washing wastewater and ensure that the washing wastewater reacts fully with various reagents.

[0041] Specifically, after the precipitant, the compounding agent and the flocculant are added into the reaction tank 1, the motor 41 is first controlled to drive the central axis 411 to rotate. As the central axis 411 rotates, the triangular stirring block 431 together with the fixed plate 43 will rotate along with the central axis 411, so that the triangular stirring block 431 mixes the washing wastewater and various reagents on the lower side. At the same time, as the triangular stirring block 431 rotates, the flipping member 44 will be driven by the triangular stirring block 431 to flip the washing wastewater and various reagents on the upper side inside and outside, thereby ensuring that the washing wastewater and various reagents can be fully and evenly mixed.

[0042] See also Figure 3 , Figure 4 , Figure 6 and Figure 7 The pushing structure includes a sliding column 444 connected to a radial sliding groove through a radial spring, a cylinder is fixed at the bottom of the sliding column 444, and the sliding column 444 is symmetrically connected to an inner push plate 445 through a connecting rod on the side of the filter cartridge 3. The sliding column 444 slides symmetrically up and down and penetrates a radial sliding rod, and a square plate 446 is fixed between the two radial sliding rods. An elastic telescopic rod is connected between the square plate 446 and the sliding column 444, and an arc sleeve 447 is fixed to one end of the two radial sliding rods close to the filter cartridge 3. The arc sleeve 447 is slidably connected to the connecting rod and the limit plate 442, and the inner push plate 445 slides in the arc sleeve 447.

[0043] The pushing structure is used to push the products of the reaction of various reagents with washing wastewater as the flipping action of the flipping member 44 is flipped, so that part of the products and the flocs therein are pushed into the fan-shaped channel 31 through the filter cartridge 3 by the inner push plate 445 in cooperation with the arc sleeve 447, and the flocs and part of the products in the fan-shaped channel 31 are completely separated from the washing wastewater and various reagents being stirred, thereby avoiding the flocs and part of the products from affecting the subsequent reactions of the washing wastewater and various reagents, thereby ensuring the reaction efficiency of the washing wastewater and various reagents.

[0044] Specifically, when the triangular stirring block 431 rotates together with the fixed plate 43 and the central axis 411, due to the fixing effect of the fixed rod 443, the rotating ring 441 and the limit plate 442 will not rotate. When the triangular stirring block 431 rotates, the triangular stirring block 431 will push the cylinder fixed at the bottom of the sliding column 444, thereby pushing the sliding column 444 toward the filter cartridge 3. As the sliding column 444 moves toward the filter cartridge 3, the inner push plate 445 and the arc sleeve 447 move toward the filter cartridge 3 together. During this process, the arc sleeve 447 will capture the products of the reaction between the washing wastewater and various reagents and move with the arc sleeve 447.

[0045] When the arc sleeve 447 drives the captured product and the flocculent part thereof to move to the filter cartridge 3, the arc sleeve 447 will first contact the filter cartridge 3 and combine with the filter cartridge 3 to form a closed structure. Due to the limiting effect of the limiting mechanism 5, the arc sleeve 447 can no longer move, and the sliding column 444 will continue to move toward the filter cartridge 3 due to the pushing effect of the triangular stirring block 431 on the cylinder. At this time, the sliding column 444 drives the connecting rod and the inner push plate 445 to move toward the filter cartridge 3 together, and then the inner push plate 445 and the arc sleeve 447 are connected. 7 are relatively located, and the inner push plate 445 can push the washing waste water and the products of various reagent reactions continuously captured in the arc sleeve 447 toward the filter cartridge 3. With the pushing action of the inner push plate 445, the washing waste water and part of the products in the arc sleeve 447 will all pass through the filter holes of the filter cartridge 3, so that the blocking effect of part of the debris generated in the reaction process of the washing waste water and various reagents can be continuously reduced through multiple reciprocating movements of the pushing structure, thereby ensuring the efficiency of the reaction of the washing waste water and various reagents.

[0046] It should be noted that in order to ensure the cooperation between the arc sleeve 447 and the inner push plate 445, a sealing material should be provided between the arc sleeve 447 and the inner push plate 445 to prevent the washing wastewater and the products produced by the washing wastewater and various reagents from returning to the arc sleeve 447 again through the inner push plate 445.

[0047] See also Figure 3 , Figure 5 , Figure 6 and Fig.10 The transmission component 42 includes a limiting sleeve 421 fixed on the filter cartridge 3 and sleeved on the side of the central axis 411, a lower extension column 422 is fixed at the bottom of the central axis 411, an arc plate 423 is fixed at the bottom of the lower extension column 422, and a lower pressure rod 424 is fixed on the side of the arc plate 423. A plurality of groups of limiting grooves (not shown in the figure) are evenly arranged in the circumferential direction of the limiting sleeve 421, and each group of limiting grooves is connected with a compressed inclined block 425 through an elastic telescopic rod. The limiting sleeve 421 and the filter cartridge 3 are rotated by the rotation of the lower pressure rod 424 before the lower pressure rod 424 presses down the compressed inclined block 425.

[0048] The top of the horizontal plate 212 is connected to the bottom of the filter cartridge 3 through the positioning key 22; an inclined scraper 311 is provided on the side of the filter cartridge 3 corresponding to each position of the fan-shaped channel 31, and the inclined scraper 311 is driven by the rotation of the filter cartridge 3 to scrape the side wall of the fan-shaped channel 31; a plurality of vertical rods 448 are evenly fixed circumferentially at the bottom of the closing cover 11, and a spiral scraper 449 is fixed at the bottom of the vertical rods 448.

[0049] In this embodiment, if Fig.10As shown, the positioning key 22 is composed of an outer column rotatably mounted on the top of the horizontal plate 212 and an embedded column fixed at the bottom of the center position of the filter cartridge 3. A cross protrusion is arranged in the outer column, and a cross-shaped groove matching the cross protrusion is opened at the bottom of the embedded column. The cooperation between the two ensures the rapid positioning and installation of the filter cartridge 3, thereby facilitating the disassembly, subsequent maintenance and cleaning of the filter cartridge 3.

[0050] The transmission member 42 can transmit the rotation of the central axis 411 to the overall rotation of the filter cartridge 3, thereby cooperating with the spiral scraper 449 to scrape the washing wastewater and various reagent products adhered to the inner wall of the filter cartridge 3, and cooperating with the inner push plate 445 and the arc sleeve 447 to push the products of the various reagents after scraping and the reaction of the washing wastewater, so that the washing wastewater and the products of various reagents are fully filtered through the filter cartridge 3 and collected by the collecting mechanism 2, and the inclined scraper 311 can not only scrape off the scale generated by the washing wastewater in the fan-shaped channel 31, but also guide the washing wastewater and the products of various reagents in the fan-shaped channel 31 downward, thereby avoiding the flocculent part of the product adhering to the side wall of the fan-shaped channel 31.

[0051] In addition, the limiting sleeve 421 can not only stabilize the filter cartridge 3, but also cooperate with the limiting mechanism 5 to further stabilize the stable filter cartridge 3 on the central axis 411, thereby ensuring that the stirring mechanism 4 can stir stably.

[0052] Specifically, as the arc sleeve 447 cooperates with the inner push plate 445 to remove the washing wastewater and the products of various reagents, the lower extension column 422 will continue to rotate with the central axis 411. During the rotation of the lower extension column 422, the arc plate 423 and the lower pressure rod 424 will rotate synchronously and follow the pressure inclined block 425. During the downward pressure movement of the lower pressure rod 424 on the pressure inclined block 425, the lower pressure rod 424 will first drive the filter cartridge 3 to rotate through the pressure inclined block 425 until the lower pressure rod 424 completely presses the pressure inclined block 425 to the bottom position, and then the lower pressure rod 424 will rotate with the pressure inclined block 425. The bevel block 425 is separated and the filter cartridge 3 returns to its original position due to the action of the limiting mechanism 5. During this process, the bevel scraper 311 will scrape the side wall of the fan-shaped channel 31 as the filter cartridge 3 rotates, and the spiral scraper 449 will scrape the washing wastewater and the products of various reagent reactions on the inner wall of the filter cartridge 3. After scraping, the washing wastewater and the products of various reagent reactions will follow the spiral scraper 449 and stay within the pushing range of the pushing structure, thereby removing the washing wastewater and the products of various reagent reactions adhering to the inner wall of the filter cartridge 3, thereby ensuring the filtering effect of the filter cartridge 3.

[0053] See also Figure 2 , Figure 3 , Figure 8 and Fig. 9The limiting mechanism 5 includes a positioning clip 51 uniformly fixed at the bottom of the closing cover 11 in the circumferential direction. The positioning clip 51 is arc-shaped as a whole and its cross-section consists of a U-shaped part and a vertical part perpendicular to the horizontal section of the U-shaped part. The U-shaped part of the positioning clip 51 is used to position the top of the filter cartridge 3.

[0054] The limiting mechanism 5 also includes a plurality of alignment components 52 arranged in the reaction tank 1 and corresponding to each fan-shaped channel 31. The alignment component 52 includes an arc-shaped groove opened on the side of the fan-shaped channel 31, and a connecting block 521 is connected to the arc-shaped groove through a slider, and an inner spring is connected between the slider and the arc-shaped groove. An alignment groove 522 is opened in the connecting block 521, and an L-shaped alignment rod 523 is fixed on the side of the filter cartridge 3 and at a position corresponding to the alignment groove 522. A stabilizing structure is symmetrically arranged in the connecting block 521 and located on both sides of the alignment groove 522; the stabilizing structure includes a connecting groove opened in the connecting block 521 and connected to the bottom of the alignment groove 522, and a trapezoidal clamping block 524 is connected in the connecting groove through a compression spring.

[0055] The limiting mechanism 5 can stabilize the filter cartridge 3 through the combination of the positioning clamp 51 and the alignment member 52, thereby ensuring the overall stability of the filter cartridge 3 during rotation. At the same time, the positioning clamp 51 and the alignment member 52 can cooperate with the positioning key 22 to quickly install and disassemble the filter cartridge 3, thereby facilitating the disassembly of the filter cartridge 3 after long-term use and subsequent inspection and replacement.

[0056] Specifically, when the filter cartridge 3 needs to be disassembled after long-term use, the closing cover 11 and the reaction tank 1 are first separated by the bolts and nuts, and then the closing cover 11 is removed upward as a whole. As the closing cover 11 is removed, the stirring mechanism 4 will move upward together and separate from the reaction tank 1. Then, the filter cartridge 3 can be removed by simply pulling it upward. When the filter cartridge 3 needs to be installed, it is only necessary to first align the L-shaped alignment rod 523 on the side of the filter cartridge 3 with each alignment groove 522 in turn and ensure that the positioning key 22 can be accurately aligned, then slowly move the filter cartridge 3 downward until the positioning key 22 is fully assembled, and at the same time, the L-shaped alignment rod 523 is inserted into the alignment groove 522, and the L-shaped alignment rod 523 will push the trapezoidal clamping blocks 524 that press against each other away until the two trapezoidal clamping blocks 524 jointly clamp the L-shaped alignment rod 523. The stability of the installed filter cartridge 3 can be further ensured by the L-shaped alignment rod 523 cooperating with the trapezoidal clamping blocks 524.

[0057] The working steps of the present invention are as follows: the first step is to transport the wastewater generated during the washing process of the ternary precursor to the reaction tank 1 through an external delivery pipeline and a delivery pump, and then adjust the pH value of the washing wastewater according to the selected precipitant. After the adjustment is completed, the precipitant, the complexing agent and the flocculant are added into the reaction tank 1 through the addition port 13.

[0058] In the second step, after the precipitant, the compounding agent and the flocculant are added into the reaction tank 1, the motor 41 is controlled to drive the central axis 411 to rotate. As the central axis 411 rotates, the triangular stirring block 431 and the fixed plate 43 will rotate together with the central axis 411, so that the triangular stirring block 431 mixes the washing wastewater and various reagents on the lower side. At the same time, as the triangular stirring block 431 rotates, the flipping member 44 will be driven by the triangular stirring block 431 to flip the washing wastewater and various reagents on the upper side inside and outside, thereby ensuring that the washing wastewater and various reagents can be fully and evenly mixed.

[0059] In the third step, while the flipping component 44 is mixing the washing wastewater and various reagents, the arc sleeve 447 together with the inner push plate 445 pushes part of the products and flocs after the reaction of the washing wastewater and various reagents in the washing wastewater toward the filter cartridge 3 until the filter cartridge 3 filters the part of the products and flocs. At this time, the part of the products and flocs will move to the collecting mechanism 2 at the bottom of the reaction tank 1 through the fan-shaped channel 31, and the part of the products and flocs that are not pushed by the arc sleeve 447 and the inner push plate 445 will sink to the filter cartridge 3 and move directly downward through the filter cartridge 3 to the collecting mechanism 2.

[0060] In the fourth step, as the arc sleeve 447 cooperates with the inner push plate 445 to remove the washing wastewater and the products of various reagents, the transmission component 42 will drive the filter cartridge 3 to rotate through the rotation of the central axis 411, and then the filter cartridge 3 will return to its original position due to the action of the limiting mechanism 5. During this process, the inclined scraper 311 will scrape the side wall of the fan-shaped channel 31 as the filter cartridge 3 rotates, and the spiral scraper 449 will scrape the washing wastewater and the products of various reagent reactions on the inner wall of the filter cartridge 3. After scraping, the washing wastewater and the products of various reagent reactions will follow the spiral scraper 449 and stay within the pushing range of the pushing structure, and will be pushed into the fan-shaped channel 31 by the flipping component 44 later.

[0061] In the fifth step, after the various reagents and the washing wastewater in the reaction tank 1 have reacted completely, the treated washing wastewater is first discharged through the outlet 15 for subsequent treatment, and finally the precipitate and floccules are taken out at the outlet 211 .

[0062] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations on the present invention. A person skilled in the art may make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention and they are still covered by the protection scope of the present invention.

Claims

1. A ternary precursor washing wastewater treatment device, comprising a reaction tank (1), a closing cover (11) connected to the top of the reaction tank (1), a water inlet (12) and a adding port (13) symmetrically arranged on both sides of the top of the closing cover (11), a plurality of support frames (14) uniformly arranged around the bottom of the reaction tank (1), and a water outlet (15) arranged on the side of the reaction tank (1), characterized in that: The bottom of the reaction tank (1) is provided with a collecting mechanism (2), a filter cartridge (3) is connected above the collecting mechanism (2), a stirring mechanism (4) is provided between the closing cover (11) and the filter cartridge (3), a fan-shaped channel (31) is uniformly provided in the circumferential direction of the reaction tank (1), and a limiting mechanism (5) for limiting the filter cartridge (3) is provided between the fan-shaped channel (31) and the closing cover (11); The stirring mechanism (4) comprises a motor (41) mounted on the top of the closing cover (11) via a motor box, the output end of the motor (41) passes through the closing cover (11) and is mounted with a central axis (411), a transmission component (42) for driving the filter cartridge (3) to rotate is arranged between the bottom of the central axis (411) and the filter cartridge (3), a fixing plate (43) is fixed on the central axis (411) and located on the upper side of the transmission component (42), a triangular stirring block (431) is fixed on each side of the fixing plate (43), an inclined surface for facilitating stirring is arranged on the triangular stirring block (431), a turning component (44) is arranged on the central axis (411) and located on the upper side of the fixing plate (43) corresponding to each fan-shaped channel (31), the turning component (44) turns the washing wastewater and various reagents, and cooperates with the triangular stirring block (431) to evenly mix the washing wastewater and various reagents; The collecting mechanism (2) comprises a truncated cone-shaped collecting bucket (21) arranged at the bottom of the reaction tank (1); a discharge port (211) is fixed at the bottom of the collecting bucket (21); a horizontal plate (212) is fixed inside the collecting bucket (21); and the top of the horizontal plate (212) is connected to the bottom of the filter cartridge (3) via a positioning key (22).

2. A ternary precursor washing wastewater treatment device according to claim 1, characterized in that: The transmission component (42) comprises a limiting sleeve (421) fixed on the filter cartridge (3) and sleeved on the side of the central axis (411); a lower extension column (422) is fixed on the bottom of the central axis (411); an arc-shaped plate (423) is fixed on the bottom of the lower extension column (422); a lower pressure rod (424) is fixed on the side of the arc-shaped plate (423); a plurality of groups of limiting grooves are evenly arranged in the circumferential direction of the limiting sleeve (421); each group of limiting grooves is connected to a pressure inclined block (425) via an elastic telescopic rod; the limiting sleeve (421) and the filter cartridge (3) are driven to rotate by the rotation of the lower pressure rod (424) before the lower pressure rod (424) presses down the pressure inclined block (425).

3. A ternary precursor washing wastewater treatment device according to claim 2, characterized in that: An inclined scraper (311) is provided on the side of the filter cartridge (3) corresponding to each sector-shaped channel (31), and the inclined scraper (311) is driven by the rotation of the filter cartridge (3) to scrape the side wall of the sector-shaped channel (31).

4. The ternary precursor washing wastewater treatment device according to claim 1, characterized in that: The flipping member (44) comprises a rotating ring (441) rotatably mounted on the central shaft (411); a limiting plate (442) is fixedly disposed on the side of the rotating ring (441) corresponding to each sector-shaped channel (31); each limiting plate (442) is fixedly connected to the closing cover (11) by a fixing rod (443); each limiting plate (442) is provided with a radial slide groove; each radial slide groove is provided with a pushing structure, and a product of a reaction between washing wastewater and various reagents is pushed toward the filter cartridge (3) by the pushing structure, so that floccules in the product are filtered into the sector-shaped channel (31) through the filter cartridge (3).

5. A ternary precursor washing wastewater treatment device according to claim 4, characterized in that: The pushing structure comprises a sliding column (444) connected in a radial sliding groove through a radial spring, a cylinder being fixed at the bottom of the sliding column (444), the sliding column (444) being symmetrically connected to an inner push plate (445) through a connecting rod on the side surface close to the filter cartridge (3), the sliding column (444) being symmetrically slidable up and down and penetrated by a radial sliding rod, a square plate (446) being fixed between the two radial sliding rods, an elastic telescopic rod being connected between the square plate (446) and the sliding column (444), an arc sleeve (447) being fixed at one end of the two radial sliding rods close to the filter cartridge (3), the arc sleeve (447) being slidably connected to the connecting rod and the limit plate (442), and the inner push plate (445) sliding in the arc sleeve (447).

6. A ternary precursor washing wastewater treatment device according to claim 4, characterized in that: A plurality of vertical rods (448) are evenly fixed around the bottom of the closure cover (11), and a spiral scraper (449) is fixed at the bottom of the vertical rod (448). The spiral scraper (449) cooperates with the inner push plate (445) and the arc sleeve (447) to push and filter the products of the reaction between the washing wastewater and various reagents.

7. The ternary precursor washing wastewater treatment device according to claim 1, characterized in that: The limiting mechanism (5) comprises a positioning clip (51) uniformly fixed to the bottom of the closing cover (11) in the circumferential direction; the positioning clip (51) is arc-shaped as a whole and its cross section consists of a U-shaped portion and a vertical portion perpendicular to the horizontal section of the U-shaped portion; the U-shaped portion of the positioning clip (51) is used to position the top of the filter cartridge (3).

8. The ternary precursor washing wastewater treatment device according to claim 7, characterized in that: The limiting mechanism (5) further comprises a plurality of alignment components (52) arranged in the reaction tank (1) and corresponding to each fan-shaped channel (31); the alignment component (52) comprises an arc-shaped groove provided on the side of the fan-shaped channel (31); a connecting block (521) is connected in the arc-shaped groove via a slider; an inner spring is connected between the slider and the arc-shaped groove; an alignment groove (522) is provided in the connecting block (521); an L-shaped alignment rod (523) is fixed on the side of the filter cartridge (3) and at a position corresponding to the alignment groove (522); and a stabilizing structure is symmetrically provided in the connecting block (521) and located on both sides of the alignment groove (522).

9. The ternary precursor washing wastewater treatment device according to claim 8, characterized in that: The stabilizing structure comprises a connecting groove which is opened in the connecting block (521) and is connected to the bottom of the alignment groove (522), and a trapezoidal clamping block (524) is connected to the connecting groove via a pressure spring.

10. The ternary precursor washing wastewater treatment device according to claim 1, characterized in that: A connection structure is evenly arranged circumferentially between the closing cover (11) and the reaction tank (1), the connection structure comprising a circumferential plate (111) evenly arranged circumferentially on the side of the closing cover (11), a coordination plate (112) is fixed at a position corresponding to the circumferential plate (111) on the top of the reaction tank (1), and each coordination plate (112) is fixedly connected to the circumferential plate (111) at a corresponding position by bolts and nuts.

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