A purifying device and method for cleaning waste water after pickling of hot-rolled titanium plate

Abstract

The application discloses a kind of purification treatment device and method of hot-rolled titanium plate cleaning wastewater after pickling, including sedimentation tank, pipeline, neutralizing mechanism, filtering mechanism;Filtering mechanism is equipped with water inlet pipe and second drain pipe, water inlet pipe is used for wastewater transmission and drainage, second drain pipe is connected with neutralizing mechanism, pipeline is arranged between neutralizing mechanism and sedimentation tank and is connected with each other.The filtering mechanism of the application can be used alternately and replaced in time Filter plate, ensure the normal progress of filtration process, and then ensure the normal progress of subsequent treatment process;Meanwhile, roller and neutralizing tank are arranged in neutralizing mechanism, first, neutralizing agent is mixed in roller, then, neutralizing wastewater in roller is used as neutralizing agent source and is stirred with wastewater in neutralizing tank, conventional neutralizing agent is added by pouring top and stirred in point surface mixing mode, and is changed into surface breaking mode by stirring and mixing of wastewater in roller and wastewater outside roller in neutralizing tank, which greatly improves mixing and stirring efficiency.

Description

Technical Field

[0001] This invention belongs to the field of titanium plate production and processing technology, and specifically relates to a purification treatment device and method for cleaning wastewater after pickling of hot-rolled titanium plates. Background Technology

[0002] Pickling is an essential step in the production and processing of titanium plates. The main purpose of the pickling stage is to remove impurities such as oxide scale that are produced on the surface of the titanium plates after annealing. Therefore, the pickling wastewater contains a large amount of oxide slag. At the same time, after pickling, the titanium plates will undergo cleaning and drying processes. The wastewater generated from cleaning also contains acid and oxide impurities. Therefore, the wastewater generated from cleaning or rinsing titanium plates needs to be treated before discharge. Direct discharge without treatment will cause significant environmental pollution.

[0003] A search revealed a prior art publication, CN 112811674 A, which describes a device for neutralizing pickling wastewater from hot-rolled nickel-based alloy stainless steel medium-thick plates. This device includes a purification tank, a cleaning plate, a reciprocating screw, a sliding plate, and an air inlet pipe. In this invention, the reciprocating screw is threadedly connected to a fixed block, allowing the sliding plate to move back and forth in a groove within the horizontal track as the drive motor rotates the screw. This allows lime from the feed hopper to be evenly distributed into the purification tank, improving the neutralization effect of lime on acidic substances within the tank. However, the existing filter has drawbacks. First, although a cleaning plate and brush are used to clean the filter, the filter holes on the filter can still become clogged over time. Second, cleaning the filter when it is severely clogged is difficult, and replacing the filter is also relatively difficult, significantly impacting subsequent processing. Furthermore, the wastewater also flows away with the collection tank.

[0004] A search revealed that a wastewater treatment system for a cold-rolled stainless steel annealing and pickling line, with prior art publication number CN 218404415 U, is also applicable to the cleaning and purification of wastewater from a hot-rolled stainless steel annealing and pickling line. This system includes a treatment tank containing interconnected filter chambers, aeration chambers, flocculation chambers, and acid addition chambers. During operation, the pickling wastewater enters the filter chamber through the inlet. The filter ports trap large particles of impurities, and the filtered wastewater then enters the aeration chamber where oxygen is supplied by an aerator, converting iron and manganese ions into high-valence oxides and hydroxides. The wastewater then enters the flocculation chamber for flocculation treatment. The filtration process is completed through the filter ports within the filter chambers. However, due to the high impurity content in the wastewater, the filter ports are prone to clogging. This technical solution lacks specific methods for unclogging these ports, which can negatively impact subsequent treatment processes and reduce wastewater treatment efficiency and effectiveness if clogging occurs and cannot be cleared promptly.

[0005] To address the above problems, this invention provides a purification treatment device and method for cleaning wastewater after pickling, which enables timely replacement of filter plates during continuous filtration of wastewater, ensuring the filtration effect and thus guaranteeing the normal operation of subsequent cleaning processes. Summary of the Invention

[0006] The purpose of this invention is to overcome the shortcomings of the prior art and provide a purification treatment device and method for cleaning wastewater after pickling of hot-rolled titanium plates. The filtration mechanism can alternate and replace filter plates in a timely manner to ensure the normal operation of the filtration process, thereby ensuring the normal operation of subsequent processing. At the same time, the neutralization mechanism is equipped with rollers and a neutralization tank. First, the neutralizing agent is mixed in the rollers. Then, the neutralized wastewater in the rollers is used as the source of the neutralizing agent and is stirred and neutralized with the wastewater in the neutralization tank. The conventional method of adding the neutralizing agent from the top of the tank and stirring it in a point-to-surface mixing manner is changed to a surface-to-surface mixing method in which the neutralized wastewater in the rollers in the neutralization tank is stirred and mixed with the wastewater outside the rollers. This greatly improves the mixing efficiency and thus the neutralization efficiency.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0008] A purification treatment device and method for cleaning wastewater after pickling of hot-rolled titanium plates includes a sedimentation tank, pipelines, a neutralization mechanism, and a filtration mechanism. The filtration mechanism is equipped with an inlet pipe and a second outlet pipe. The inlet pipe is used for wastewater transmission and diversion, and the second outlet pipe is connected to the neutralization mechanism. The pipelines are located between the neutralization mechanism and the sedimentation tank and are interconnected. The wastewater is first filtered through the filtration mechanism, then enters the neutralization mechanism for neutralization reaction, and finally enters the sedimentation tank for settling. Then, the supernatant is discharged and the precipitate is cleaned.

[0009] The filtration mechanism includes a filter box with replacement ports on both sides. Each replacement port has a sealing plate for opening and closing. Inside the filter box is a partition with slide rails on both sides, mounted on the inner wall of the filter box, for supporting filter plates. Hook plates are located on both sides of the partition, each with a first through groove. A second gear and a top plate are also located on both sides of the partition. The second gear is rotatably connected to the partition, with a bushing on one side and a splined shaft on one side of the top plate. The splined shaft is slidably connected to the bushing, allowing them to slide against each other, and the splined shaft has a... The limiting block ensures a fixed sliding stroke between the two, preventing the spline shaft from slipping off the bushing. A third spring is provided between the second gear and the top plate, and the third spring is sleeved on the spline shaft and the bushing. A hook block is provided on the top plate, which can contact the hook plate after rotation. An adjusting rod is provided at the bottom of the hook plate, which is rotatably connected to the hook plate. One end of the adjusting rod is provided with a first gear, which is located in the through groove and meshes with the second gear. The other end of the adjusting rod is rotatably connected to the filter box. By rotating the adjusting rod, the second gear is driven to rotate, thereby driving the top plate to rotate, so that the hook block hooks onto the hook plate or is released from the hooking state.

[0010] A guide plate is provided above the partition, and pins are provided at both ends of the guide plate and are rotatably connected to the filter box; a second motor is provided on the outer wall of the filter box, and the output shaft of the second motor is connected to the pins on the guide plate, thereby controlling the rotation of the guide plate through the second motor.

[0011] The neutralization mechanism includes a neutralization tank, a reagent tank at the top of the neutralization tank, and a dosing pipe on the reagent tank; a second drain pipe is connected to the top of the neutralization tank; a pipe is connected to the bottom of the neutralization tank, and a second water pump is installed on the pipe; a hollow main shaft is installed inside the neutralization tank, with both ends of the main shaft rotatably connected to the neutralization tank, and the top of the main shaft is located inside the reagent tank; a third water pump is installed at the top of the main shaft to supply neutralizing agent to the hollow main shaft; a through pipe and a support arm are installed on the main shaft; a first port is provided on the through pipe; a first stirring shaft is rotatably connected to the support arm; and rollers are rotatably connected between the through pipes; the neutralizing agent in the reagent tank is composed of the following raw materials in parts by weight: 5-6 parts methanol, 6-8 parts dimethicone oil, 2-4 parts polyethylene polyamine, 40-45 parts lime, and 30-45 parts solvent, which are mixed together to form a solution.

[0012] The first stirring shaft shown is equipped with stirring blades.

[0013] The roller has a hollow rotating shaft inside, and a second opening at the top of the rotating shaft. The second opening is located inside a pipe and is interconnected with the pipe. The rotating shaft has a nozzle, and the outer wall of the rotating shaft has two reciprocating threads. The inner wall of the roller has a sliding groove. The roller has several openings, and the openings are equipped with rotatably connected sealing plates. The sealing plates are equipped with fan plates. The openings are provided with bevels to expand the rotation angle of the fan plates.

[0014] The roller is equipped with a pair of second stirring shafts and a pair of stirring frames inside; the stirring frames are located on the reciprocating thread section and are connected to the rotating shaft by threads. The stirring frames include a fixed frame, a slider is provided on the fixed frame, the slider is located in the groove, and stirring blades are rotatably connected inside the fixed frame; a first motor is provided at the bottom of the main shaft to provide power to it, and the first motor is fixed to the bottom of the neutralization tank by a motor seat; the first motor drives the main shaft to rotate, thereby driving the roller and the first stirring shaft to rotate around the main shaft as the axis.

[0015] The neutralization tank is also equipped with a second toothed ring and is fixedly connected to the inner wall of the neutralization tank; the top end of the first stirring shaft is equipped with a gear that meshes with the second toothed ring; the top end of the rotating shaft is equipped with a gear that meshes with the second toothed ring.

[0016] The passage pipe is provided with a first toothed ring; the top end of the second stirring shaft is provided with a gear that meshes with the first toothed ring.

[0017] The sedimentation tank is equipped with a sludge removal port at the bottom. A support frame is provided on one side of the sedimentation tank to support and fix the pipe, and a first drain pipe and a support frame for supporting and fixing it are provided on the other side. A first water pump is provided on the first drain pipe. A telescopic pipe is provided at one end of the first drain pipe to adjust the depth into the sedimentation tank.

[0018] A transparent observation port is provided on the side wall of the filter box, which makes it easy to observe the accumulation of impurities on the filter plate inside the filter box.

[0019] A method for treating wastewater from the pickling process of hot-rolled titanium plates, comprising the following specific steps:

[0020] 1) Wastewater transport: Wastewater is first transported into the filter box of the filtration mechanism through the inlet pipe; then, the wastewater is guided by the guide plate and flows through the filter plate for filtration; when there are many impurities on the filter plate, the second motor drives the guide plate to rotate to the other side, changing the flow direction of the wastewater so that it flows through the filter plate on the other side; by changing the flow direction of the wastewater through the rotation of the guide plate, the filter plates are used alternately, thus achieving the effect of continuous filtration of wastewater.

[0021] 2) Quick Replacement of Filter Plates: Observe the accumulation of impurities on the filter plates inside the filter box through the observation port. When the filter plates have filtered a large amount of impurities, they can be quickly replaced. First, pull out the sealing plate to open the replacement port; then rotate the adjusting rod to drive the second gear and bushing to rotate, thereby driving the spline shaft and top plate to rotate, causing the hook block to disengage from the hook plate. Then, under the push of the third spring, the filter plate is pushed out of the replacement port a distance by the top plate, making it easier to retrieve the filter plate. When installing the filter plate, push it into the filter box along the replacement port and slide rail. Push the top plate back to the hook plate side, then rotate the adjusting rod to rotate the spline shaft and top plate, thereby causing the hook plate and hook block to hook and limit each other, preventing the top plate from being pushed out by the third spring; then insert the sealing plate to block the replacement port.

[0022] 3) Wastewater neutralization treatment: After cleaning, the wastewater is transferred to the neutralization tank through the second drainage pipe for neutralization;

[0023] S1: The neutralizing agent in the reagent tank is supplied to the main shaft by the action of the third water pump. The neutralizing agent passes through the main shaft, the connecting pipe, and the rotating shaft, and is then sprayed out through the nozzle. The third water pump provides power to spray the neutralizing agent along the nozzle. Then, the first motor drives the main shaft to rotate, which in turn drives the roller and the second stirring shaft to rotate around the main shaft. The first and second toothed rings cause the roller and the second stirring shaft to rotate. At this time, the fan plate is resisted by the water flow, causing the sealing plate to close the opening on the roller, so that the neutralizing agent is first mixed with the wastewater in the roller. At the same time, the stirring frame moves up and down along the slider to improve the mixing efficiency.

[0024] S2: After the rollers have rotated as specified, the first motor drives them to reverse. The fan plate rotates under the resistance of the water flow to open the opening on the rollers, allowing the uniformly mixed neutralizing agent and wastewater inside the rollers to flow out through the opening and into the neutralization tank to be mixed together with the wastewater.

[0025] Based on the tooth ratio of the first and second toothed rings, the rotational speed ratio between the roller and the second stirring shaft is set to 1:3; furthermore, the rotational speed of the main shaft is set to 45-60 r / min; the mixing time is 25-35 min, and then the pH value is measured through the sampling port to determine whether the neutralization effect is met. If not, mixing continues or chemicals are added; if it is met, the wastewater is transferred to the sedimentation tank.

[0026] 4) Neutralized wastewater transfer and sedimentation: The wastewater mixed with neutralizing agents flows through the pipeline into the sedimentation tank, where it is allowed to settle. The supernatant of the neutralized wastewater after sedimentation is discharged through the first drain pipe, and the impurities after sedimentation are discharged and cleaned through the sludge removal port. The sedimentation time is set to 45-70 minutes.

[0027] The advantages of this invention compared to existing technologies are as follows:

[0028] 1) The present invention is equipped with a filtration mechanism that can continuously filter the cleaning wastewater; firstly, the filter plates are provided in pairs and symmetrically arranged on both sides of the partition and are equipped with rotatable guide plates. After the guide plates are rotated to change the flow direction, the filter plates can be used alternately and replaced. Furthermore, when replacing the filter plates, it can ensure that the cleaning wastewater can be continuously filtered.

[0029] Secondly, when replacing the filter plate, after opening the replacement port, simply rotate the adjusting rod to make the first gear rotate, which in turn drives the top plate to rotate, making the top plate rotate to a horizontal position and causing the hook plate and hook block to disengage from each other. Then, under the push of the third spring, the top block quickly pushes the filter plate out of the replacement port a certain distance, which helps to collect the filter plate and avoids the disadvantage of the filter plate being completely inside the filter box and unable to be quickly removed.

[0030] When replacing the filter plate, simply insert the filter plate into the filter box along the slide rail, push the filter plate against the top plate, reset the top plate and push it back into the hook plate, then rotate the adjusting rod to rotate the top plate, causing the hook plate to re-engage with the hook block; then the sealing plate is inserted to close the replacement port to complete the filter plate replacement. This method is quick and convenient, greatly improving the replacement efficiency.

[0031] 2) The neutralization mechanism includes a main shaft, rollers, and a first stirring shaft. Inside the rollers are a rotating shaft, a second stirring shaft, and a stirring frame. The neutralizing agent is sprayed out by nozzles on the rotating shaft via a third water pump. Because the nozzles are located on the rotating shaft itself, the neutralizing agent can be transferred to the upper, middle, and lower layers of the rollers in a timely manner, achieving relatively uniform and targeted dispensing. Then, through the revolution and rotation of the rotating shaft, combined with the mixing of the second stirring shaft and the stirring frame, the wastewater and neutralizing agent inside the rollers can be quickly mixed. Compared to the wastewater outside the rollers, this creates a relatively large source of neutralizing agent.

[0032] Furthermore, when the main shaft reverses, the sealing plate rotates under the action of the fan plate, opening the opening on the roller, allowing the uniformly mixed wastewater inside the roller to flow out and mix and neutralize with the wastewater outside the roller again. Compared with the conventional method of adding neutralizing agent all at once, this invention first stirs and neutralizes the wastewater inside the roller, and then uses the wastewater inside the roller as a neutralization source to stir and neutralize with the wastewater outside the roller again. This method relatively expands the source of the agent, enabling it to be quickly distributed in different layers of wastewater in the neutralization tank, improving the efficiency of stirring to achieve uniform neutralization. Attached Figure Description

[0033] Appendix Figure 1 This is a schematic diagram of the purification treatment device and method for cleaning wastewater after pickling of hot-rolled titanium plates according to the present invention.

[0034] Appendix Figure 2 This is a schematic diagram of the temporal structure of the neutralizing can;

[0035] Appendix Figure 3 This is a schematic diagram of the roller structure;

[0036] Appendix Figure 4 This is a schematic diagram of the internal structure of the roller;

[0037] Appendix Figure 5 This is a top view of the internal structure of the roller;

[0038] Appendix Figure 6 This is a schematic diagram of the internal structure of the filter box. Figure 1 ;

[0039] Appendix Figure 7 This is a schematic diagram of the internal structure of the filter box. Figure 2 ;

[0040] In the diagram: 1. Sedimentation tank; 11. Sewage outlet; 12. Support frame; 13. First drain pipe; 14. Expansion pipe; 15. First water pump; 2. Pipeline; 21. Second water pump;

[0041] 3. Neutralization mechanism; 31. Chemical tank; 311. Dosing pipe; 32. Neutralization tank; 33. Main shaft; 331. Third water pump; 332. Through pipe; 3321. First inlet; 3322. First toothed ring; 333. Support arm; 34. Roller; 3401. Slide groove; 341. Opening; 3411. Angled; 342. Sealing plate; 3421. Fan plate; 343. Rotating shaft; 3431. Second inlet; 3432. Nozzle; 35. Second toothed ring; 36. First stirring shaft; 37. First motor; 371. Motor base; 38. Stirring frame; 381. Fixing frame; 382. Sliding block; 383. Stirring blade; 39. Second stirring shaft; 310. Sampling port;

[0042] 4. Filtration mechanism; 401. Second drain pipe; 402. Replacement port; 403. Slide rail; 404. Filter box; 405. Observation port;

[0043] 41. Partition plate; 411. Hook plate; 412. Through groove; 42. Guide plate; 43. Second motor;

[0044] 44. Adjusting rod; 441. First gear; 45. Top plate; 451. Splined shaft; 452. Hook block;

[0045] 46. ​​Second gear; 461. Bushing; 47. Third spring; 5. Inlet pipe; 6. Filter plate. Detailed Implementation

[0046] To facilitate understanding by those skilled in the art, the following is in conjunction with the appendix. Figure 1-7 The technical solution of the present invention will be further described in detail below.

[0047] A purification treatment device and method for cleaning wastewater after pickling of hot-rolled titanium plates includes a sedimentation tank 1, a pipeline 2, a neutralization mechanism 3, and a filtration mechanism 4. The filtration mechanism 4 is equipped with an inlet pipe 5 and a second drain pipe 401. The inlet pipe 5 is used for wastewater transmission and diversion, and the second drain pipe 401 is connected to the neutralization mechanism 3. The pipeline 2 is located between the neutralization mechanism 3 and the sedimentation tank 1 and is interconnected. The wastewater first passes through the filtration mechanism 4 for filtration, then enters the neutralization mechanism 3 for neutralization reaction, and finally enters the sedimentation tank 1 for settling. Then, the supernatant is discharged and the precipitate is cleaned.

[0048] The filtration mechanism 4 includes a filter box 404, with replacement ports 402 on both sides. A sealing plate is inserted into each replacement port 402 for opening and closing. Inside the filter box 404 is a partition 41, with slide rails 403 on both sides of the partition 41. The slide rails 403 are mounted on the inner wall of the filter box 404 and are used to support filter plates 6. Hook plates 411 are provided on both sides of the partition 41, with first through grooves 412 on each hook plate. A second gear 46 and a top plate 45 are also provided on both sides of the partition 41. The second gear 46 is rotatably connected to the partition 41. A bushing 461 is provided on one side of the second gear 46, and a splined shaft 451 is provided on one side of the top plate 45. The splined shaft 451 is slidably connected to the bushing 461, allowing them to slide against each other. A limiting block is provided at one end to ensure a fixed sliding stroke between the two, preventing the spline shaft 451 from slipping off the bushing 461. A third spring 47 is provided between the second gear 46 and the top plate 45, and the third spring 47 is sleeved on the spline shaft 451 and the bushing 461. A hook block 452 is provided on the top plate 45, which can contact the hook plate 411 after rotation. An adjusting rod 44 is provided at the bottom of the hook plate 411 and is rotatably connected to it. One end of the adjusting rod 44 is provided with a first gear 441, which is located at the through groove 412 and meshes with the second gear 46. The other end of the adjusting rod 44 is rotatably connected to the filter box 404. By rotating the adjusting rod 44, the second gear 46 is driven to rotate, thereby driving the top plate 45 to rotate, so that the hook block 452 hooks the hook plate 411 or is released from the hooking state.

[0049] A guide plate 42 is provided above the partition 41. The guide plate 42 has pins at both ends and is rotatably connected to the filter box 404. A second motor 43 is provided on the outer wall of the filter box 404. The output shaft of the second motor 43 is connected to the pins on the guide plate 42, and the guide plate 42 is rotated by the second motor 43.

[0050] The neutralization mechanism 3 includes a neutralization tank 32, with a reagent tank 31 at the top and a dosing pipe 311 on the reagent tank 31; the top of the neutralization tank 32 is connected to a second drain pipe 401; the bottom of the neutralization tank 32 is connected to a pipe 2, with a second water pump 21 on the pipe 2; a main shaft 33 is provided inside the neutralization tank 32, and the main shaft 33 is hollow, with both ends of the main shaft 33 rotatably connected to the neutralization tank 32; the top of the main shaft 33 is located inside the reagent tank 31, and a third water pump 331 is provided at the top of the main shaft 33 for pumping water from the hollow main shaft 33. The neutralizing agent is supplied; the main shaft 33 is provided with a through pipe 332 and a support arm 333; the through pipe 332 is provided with a first through port 3321; the support arm 333 is provided with a first stirring shaft 36 rotatably connected, and the through pipes 332 are provided with a roller 34 rotatably connected; the neutralizing agent in the agent tank 31 is composed of the following raw materials in parts by weight: 5-6 parts by weight of methanol, 6-8 parts by weight of dimethicone oil, 2-4 parts by weight of polyethylene polyamine, 40-45 parts by weight of lime, and 30-45 parts by weight of solvent, which are mixed together to form a solution.

[0051] The first stirring shaft 36 shown is equipped with stirring blades.

[0052] The roller 34 has a hollow rotating shaft 343 inside. The top of the rotating shaft 343 has a second opening 3431, which is located in the pipe 332 and connected to each other. The rotating shaft 343 has a nozzle 3432, and the outer wall of the rotating shaft 343 has two reciprocating threads. The inner wall of the roller 34 has a sliding groove 3401. The roller 34 has several openings 341, and the openings 341 have rotatably connected sealing plates 342. The sealing plates 342 have fan plates 3421. The openings 341 have an angle 3411 that can expand the rotation angle of the fan plates 3421.

[0053] The roller 34 is equipped with a pair of second stirring shafts 39 and a pair of stirring frames 38. The stirring frames 38 are located on the reciprocating thread section and are connected to the rotating shaft 343 by threads. The stirring frames 38 include a fixed frame 381, and a slider 382 is provided on the fixed frame 381. The slider 382 is located in the slide groove 3401. The fixed frame 381 is equipped with a rotatably connected stirring blade 383. The bottom end of the main shaft 33 is equipped with a first motor 37 that provides power to it. The first motor 37 is fixed to the bottom of the neutralization tank 32 by a motor seat 371. The first motor 37 drives the main shaft 33 to rotate, thereby driving the roller 34 and the first stirring shaft 36 to rotate around the main shaft 33 as the axis.

[0054] The neutralization tank 32 is also provided with a second toothed ring 35 and is fixedly connected to the inner wall of the neutralization tank 32; the top end of the first stirring shaft 36 is provided with a gear and meshes with the second toothed ring 35; the top end of the rotating shaft 343 is provided with a gear and meshes with the second toothed ring 35.

[0055] The passage pipe 332 is provided with a first toothed ring 3322; the top end of the second stirring shaft 39 is provided with a gear that meshes with the first toothed ring 3322.

[0056] The sedimentation tank 1 is provided with a sludge removal port 11 at the bottom. A support frame 12 is provided on one side of the sedimentation tank 1 to support and fix the pipe 2. A first drain pipe 13 and a support frame 12 for supporting and fixing it are provided on the other side. A first water pump 15 is provided on the first drain pipe 13. A telescopic pipe 14 is provided at one end of the first drain pipe 13 to adjust the depth of the pipe extending into the sedimentation tank 1.

[0057] A transparent observation port 405 is provided on the side wall of the filter box 404 to facilitate observation of the accumulation of filtered impurities on the filter plate 6 inside the filter box 404.

[0058] A method for treating wastewater from the pickling process of hot-rolled titanium plates, comprising the following specific steps:

[0059] 1) Transmission of cleaning wastewater: The cleaning wastewater is first transmitted into the filter box 404 of the filtration mechanism 4 through the inlet pipe 5; then the cleaning wastewater is guided by the guide plate 42 and then flows through the filter plate 6 for filtration; when there are many impurities on the filter plate 6, the second motor 43 drives the guide plate 42 to rotate to the other side, changing the flow direction of the cleaning wastewater and making it flow through the filter plate 6 on the other side; by changing the flow direction of the cleaning wastewater through the rotation of the guide plate 42, the filter plate 6 can be used alternately, thereby achieving the effect of continuous filtration of cleaning wastewater.

[0060] 2) Quick Replacement of Filter Plates: Observe the accumulation of impurities on the filter plates 6 inside the filter box 404 through the observation port 405. When the filter plates 6 have filtered a large amount of impurities, they can be quickly replaced. First, pull out the sealing plate to open the replacement port 402; then rotate the adjusting rod 44 to drive the second gear 46 and the bushing 461 to rotate, thereby driving the spline shaft 451 and the top plate 45 to rotate, causing the hook block 452 to disengage from the hook plate 411, and then be pushed out by the third spring 47, entering... The filter plate 6 is pushed out of the replacement port 402 by the top plate to facilitate the collection of the filter plate 6. When installing the filter plate, it is pushed into the filter box 404 along the replacement port 402 and the slide rail 403. The top plate 45 is pushed back to the side of the hook plate 411. Then the adjusting rod 44 is rotated to make the spline shaft 451 and the top plate 45 rotate, so that the hook plate 411 and the hook block 452 are hooked and limited to each other, preventing the top plate 45 from being pushed out by the third spring 47. Then the sealing plate is inserted to block the replacement port 402.

[0061] 3) Wastewater neutralization treatment: After cleaning, the wastewater is transferred to the neutralization tank 32 through the second drain pipe 401 for neutralization;

[0062] S1: The neutralizing agent in the agent tank 31 is supplied to the main shaft 33 by the action of the third water pump 331. The neutralizing agent passes through the main shaft 33, the through pipe 332, and the rotating shaft 343, and is then sprayed out through the nozzle 3432. The third water pump 331 provides power to spray the neutralizing agent along the nozzle 3432. Then, the first motor 37 drives the main shaft 33 to rotate, which in turn drives the roller 34 and the second stirring shaft 39 to rotate around the main shaft 33. The first toothed ring 3322 and the second toothed ring 35 cause the roller 34 and the second stirring shaft 39 to rotate. At this time, the fan plate 3421 is resisted by the water flow, causing the sealing plate 342 to close the opening 341 on the roller 34, so that the neutralizing agent is first mixed with the wastewater in the roller 34. At the same time, the stirring frame 38 moves up and down along the slider 382 to improve the mixing efficiency.

[0063] S2: After the roller 34 has rotated as specified, the first motor 37 drives it to reverse. The fan plate 3421 rotates under the resistance of the water flow to open the opening on the roller 34, so that the uniformly mixed neutralizing agent and wastewater in the roller 34 flow out through the opening 341 and enter the neutralization tank 32 to be mixed with the wastewater as a whole.

[0064] Based on the tooth ratio of the first toothed ring 3322 and the second toothed ring 35, the rotational speed ratio of the roller 34 to the second stirring shaft 39 is set to 1:3; furthermore, the rotational speed of the main shaft 33 is set to 45-60 r / min; the mixing time is 25-35 min, and then the pH value is sampled and tested through the sampling port 310 to determine whether the neutralization effect is met. If it is not met, mixing continues or chemicals are added; if it is met, the wastewater is transferred to the sedimentation tank 1.

[0065] 4) Neutralization wastewater transfer and sedimentation: The wastewater mixed with neutralizing agents flows into sedimentation tank 1 through pipe 2 and then settles; the supernatant of the neutralized wastewater after sedimentation is discharged through the first drain pipe 13, and the impurities after sedimentation are discharged and cleaned through the sludge removal port 11; the sedimentation time is set to 45-70 minutes.

[0066] In the description of this invention, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0067] In summary, the electronic or electrical components, including but not limited to electric actuators and motors, are existing components that are custom-made or purchased. The electrical connections between these components are conventional circuit or electrical connections in the prior art and are not within the scope of protection of this invention.

[0068] The above description is merely an example and illustration of the structure of the present invention. Those skilled in the art can make various modifications or additions to the specific embodiments described, or use similar methods to replace them, as long as they do not deviate from the structure of the invention or exceed the scope defined in the claims, all of which should fall within the protection scope of the present invention.

Claims

1. A purification treatment device for wastewater from the pickling of hot-rolled titanium plates, comprising a sedimentation tank, pipelines, a neutralization mechanism, and a filtration mechanism; the filtration mechanism is equipped with an inlet pipe and a second outlet pipe, the inlet pipe being used for wastewater transmission and diversion, the second outlet pipe being connected to the neutralization mechanism, and the pipelines being located between and connected to the sedimentation tank; the wastewater first passes through the filtration mechanism for filtration, then enters the neutralization mechanism for neutralization reaction, and finally enters the sedimentation tank for settling, then the supernatant is discharged and the precipitate is cleaned; Its features The filtration mechanism includes a filter box with replacement ports on both sides. Each replacement port has a sealing plate for opening and closing. Inside the filter box is a partition with slide rails on both sides, mounted on the inner wall of the filter box, for supporting filter plates. Hook plates are located on both sides of the partition, each with a first through groove. A second gear and a top plate are also located on both sides of the partition. The second gear is rotatably connected to the partition, with a bushing on one side and a splined shaft on one side of the top plate. The splined shaft is slidably connected to the bushing, allowing them to slide against each other, and the splined shaft has a... The limiting block ensures a fixed sliding stroke between the two, preventing the spline shaft from slipping off the bushing. A third spring is provided between the second gear and the top plate, and the third spring is sleeved on the spline shaft and the bushing. A hook block is provided on the top plate, which can contact the hook plate after rotation. An adjusting rod is provided at the bottom of the hook plate, which is rotatably connected to the hook plate. One end of the adjusting rod is provided with a first gear, which is located in the through groove and meshes with the second gear. The other end of the adjusting rod is rotatably connected to the filter box. By rotating the adjusting rod, the second gear is driven to rotate, thereby driving the top plate to rotate, so that the hook block hooks onto the hook plate or is released from the hooking state. A guide plate is provided above the partition, and pins are provided at both ends of the guide plate and are rotatably connected to the filter box; a second motor is provided on the outer wall of the filter box, and the output shaft of the second motor is connected to the pins on the guide plate, thereby controlling the rotation of the guide plate through the second motor; The neutralization mechanism includes a neutralization tank, a reagent tank at the top of the neutralization tank, and a dosing pipe on the reagent tank; a second drain pipe is connected to the top of the neutralization tank; a pipe is connected to the bottom of the neutralization tank, and a second water pump is installed on the pipe; a main shaft is installed inside the neutralization tank, the main shaft is hollow, both ends of the main shaft are rotatably connected to the neutralization tank, the top of the main shaft is located inside the reagent tank, and a third water pump is installed at the top of the main shaft to supply neutralizing agent to the hollow main shaft; a through pipe and a support arm are installed on the main shaft; a first through port is installed on the through pipe; a first stirring shaft is rotatably connected to the support arm; and rollers are rotatably connected between the through pipes; the neutralizing agent in the reagent tank is composed of the following raw materials in parts by weight: 5-6 parts methanol, 6-8 parts dimethicone oil, 2-4 parts polyethylene polyamine, 40-45 parts lime, and 30-45 parts solvent, which are mixed together to form a solution; The first stirring shaft shown is equipped with stirring blades; The roller has a hollow rotating shaft inside, and a second opening at the top of the rotating shaft. The second opening is located inside the connecting pipe and is interconnected with the pipe. The rotating shaft has a nozzle, and the outer wall of the rotating shaft has two reciprocating threads. The inner wall of the roller has a sliding groove. The roller has several openings, and the openings are equipped with rotatably connected sealing plates. The sealing plates are equipped with fan plates. The openings are provided with bevels to expand the rotation angle of the fan plates. The roller is equipped with a pair of second stirring shafts and a pair of stirring frames inside; the stirring frames are located on the reciprocating thread section and are connected to the rotating shaft by threads. The stirring frames include a fixed frame, a slider on the fixed frame, the slider being located in a groove, and stirring blades rotatably connected inside the fixed frame; a first motor is provided at the bottom of the main shaft to provide power to it, and the first motor is fixed to the bottom of the neutralization tank by a motor seat; the first motor drives the main shaft to rotate, thereby driving the roller and the first stirring shaft to rotate around the main shaft as the axis; The neutralization tank is also equipped with a second toothed ring that is fixedly connected to the inner wall of the neutralization tank; the top end of the first stirring shaft is equipped with a gear that meshes with the second toothed ring; the top end of the rotating shaft is equipped with a gear that meshes with the second toothed ring; The passage pipe is provided with a first toothed ring; the top end of the second stirring shaft is provided with a gear that meshes with the first toothed ring.

2. The purification and treatment device for wastewater from the pickling process of hot-rolled titanium plates according to claim 1 is characterized in that... The sedimentation tank is provided with a sludge removal port at the bottom. A support frame is provided on one side of the sedimentation tank to support and fix the pipe, and a first drain pipe and a support frame for supporting and fixing it are provided on the other side. A first water pump is provided on the first drain pipe. A telescopic pipe is provided at one end of the first drain pipe to adjust the depth of insertion into the sedimentation tank. A transparent observation port is provided on the side wall of the filter box, which makes it easy to observe the accumulation of impurities on the filter plate inside the filter box.

3. The purification and treatment device for wastewater from the pickling of hot-rolled titanium plates according to claim 1, characterized in that, The specific steps for using this device are as follows: 1) Wastewater transport: Wastewater is first transported into the filter box of the filtration mechanism through the inlet pipe; then, the wastewater is guided by the guide plate and flows through the filter plates for filtration; when there are many impurities on the filter plates, the second motor drives the guide plate to rotate to the other side, changing the flow direction of the wastewater so that it flows through the filter plates on the other side; by changing the flow direction of the wastewater through the rotation of the guide plate, the filter plates are used alternately, thus achieving the effect of continuous filtration of wastewater; 2) Quick Replacement of Filter Plates: Observe the accumulation of impurities on the filter plates inside the filter box through the observation port. When the filter plates have filtered a large amount of impurities, they can be quickly replaced. First, pull out the sealing plate to open the replacement port; then rotate the adjusting rod to drive the second gear and bushing to rotate, thereby driving the spline shaft and top plate to rotate, causing the hook block to disengage from the hook plate. Then, under the push of the third spring, the filter plate is pushed out, and the filter plate is pushed out of the replacement port a distance by the top plate to facilitate the collection of the filter plate; when installing the filter plate, push it into the filter box along the replacement port and slide rail, push the top plate back to the hook plate side, and then rotate the adjusting rod to rotate the spline shaft and top plate, thereby causing the hook plate and hook block to hook and limit each other, preventing the top plate from being pushed out by the third spring; then insert the sealing plate to block the replacement port. 3) Wastewater neutralization treatment: After cleaning, the wastewater is transferred to the neutralization tank through the second drainage pipe for neutralization; 4) Neutralized wastewater transfer and sedimentation: The wastewater mixed with neutralizing agents flows through the pipeline into the sedimentation tank, where it is allowed to settle. The supernatant of the neutralized wastewater after sedimentation is discharged through the first drain pipe, and the impurities after sedimentation are discharged and cleaned through the sludge removal port. The sedimentation time is set to 45-70 minutes.

4. The purification and treatment device for wastewater from the pickling process of hot-rolled titanium plates according to claim 3, characterized in that... Step 3) consists of two steps; S1: The neutralizing agent in the reagent tank is supplied to the main shaft by the action of the third water pump. The neutralizing agent passes through the main shaft, the connecting pipe, and the rotating shaft, and is then sprayed out through the nozzle. The third water pump provides power to spray the neutralizing agent along the nozzle. Then, the first motor drives the main shaft to rotate, which in turn drives the roller and the second stirring shaft to rotate around the main shaft. The first and second toothed rings cause the roller and the second stirring shaft to rotate. At this time, the fan plate is resisted by the water flow, causing the sealing plate to close the opening on the roller, so that the neutralizing agent is first mixed with the wastewater in the roller. At the same time, the stirring frame moves up and down along the slider to improve the mixing efficiency. S2: After the rollers have rotated as specified, the first motor drives them to reverse. The fan plate rotates under the resistance of the water flow, opening the opening on the rollers, so that the uniformly mixed neutralizing agent and wastewater inside the rollers flow out through the opening and enter the neutralization tank to be mixed together with the wastewater.

5. The purification and treatment device for cleaning wastewater after pickling of hot-rolled titanium plates according to claim 3, characterized in that... In step 3), the tooth ratio of the first and second toothed rings is set so that the speed ratio of the roller to the second stirring shaft is 1:

3. Further, the speed of the main shaft is set to 45-60 r / min. The mixing time is 25-35 min. Then, the pH value is sampled through the sampling port to determine whether the neutralization effect is met. If not, mixing continues or chemicals are added. If it is met, the wastewater is transferred to the sedimentation tank.

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