A hot-rolled stainless steel washing water purification device

Abstract

The present invention discloses a hot-rolled stainless steel rinse water purification device, comprising a filtering mechanism, characterized in that a mixing tank is provided below the filtering mechanism, a sedimentation mechanism is provided on one side of the mixing tank, a first stirring mechanism, a second stirring mechanism, a main shaft, and a power transmission mechanism are provided inside the mixing tank, a first bevel gear and a second bevel gear are provided on the top of the main shaft, the first bevel gear and the second bevel gear are configured as half teeth, the first bevel gear and the second bevel gear are arranged opposite each other, a support plate is provided in the middle section of the main shaft, and a first limiting groove is provided on the support plate; an expansion chamber and a feeding pipe are provided on the side of the mixing tank. The present invention can effectively treat rinse wastewater and pickling wastewater. The wastewater is first filtered, and then the wastewater and lime water are irregularly disturbed by the first stirring mechanism and the second stirring mechanism, which can achieve rapid mixing and stirring, accelerate the neutralization effect, and improve the neutralization quality.

Description

Technical Field

[0001] The invention belongs to the technical field of stainless steel production wastewater treatment, and in particular relates to a hot-rolled stainless steel washing water purification treatment device. Background Art

[0002] A large amount of scale is generated during the hot rolling production of stainless steel. The scale is generally treated by means of scale breaking shot blasting, pickling and other processes. After pickling, the acid solution on the surface of the stainless steel is rinsed with clean water. Such rinsing wastewater contains heavy metal ions, fluoride ions and a small amount of scale residue. At the same time, a large amount of wastewater is generated during the rinsing process, but the concentration of pollutants is relatively low. Therefore, after repeated use, the rinse water needs to be treated and purified before discharge. During the treatment, it is generally mixed with the waste acid solution.

[0003] Through searching, we know that the most common treatment method for pickling wastewater is neutralization precipitation, that is, adding lime water to the wastewater, mixing it to precipitate the metal ions in the wastewater and produce a mixed precipitate that sinks to the bottom of the pool;

[0004] In addition, according to the search, it is also known that a method for treating stainless steel multi-acid pickling wastewater with the prior art publication number CN 115677125 A is provided, and a method for adding lime water is also provided in the neutralization process of the method; the method comprises the following steps: 1) neutralization adjustment; 2) precipitation treatment; 3) pH adjustment treatment; 4) biological treatment; 5) sludge treatment: the sludge in the sludge concentration tank is extracted from the reaction sedimentation tank after neutralization and is filtered into a filter press, the obtained dry sludge is transported for treatment, and the filtered water enters the reaction sedimentation tank for treatment or enters the filter water tank, the biochemical sludge is added with flocculant and enters the screw press for sludge dehydration, the obtained dry sludge is transported for treatment or transported for treatment after re-drying, the filtered water enters the water collection tank, and is pressurized by a pump and sent to the pH adjustment tank for treatment. This method can solve the problem of the difficulty in stably meeting the standards for the total nitrogen, ammonia nitrogen, and fluoride ion effluent concentrations in the current stainless steel pickling wastewater treatment. However, no clear implementation methods are given for improving the effects and efficiency of the neutralization and precipitation treatment steps, including which mechanism or how to utilize the relevant devices.

[0005] In addition, the prior art publication number CN 105948313 A was retrieved, which is a mixed treatment process for stainless steel pickling wastewater and cleaning wastewater. The process includes: (1) removing petroleum pollutants and large particle impurities; (2) adjusting water quality and quantity; (3) adjusting the pH value of the comprehensive wastewater to 4.5 with sodium carbonate to precipitate iron, and then adding calcium chloride to convert most of the fluorine into calcium fluoride; (4) removing suspended particles by precipitation; (5) adding sodium hydroxide to the pH value to hydrolyze and precipitate nickel to produce nickel hydroxide; (6) adding sulfuric acid to adjust the pH value, and then adding calcium hydroxide and PAC to react the remaining fluorine to produce calcium fluoride; (7) removing calcium fluoride by precipitation; and (8) discharging into the urban sewage network. This technical solution is a technical method for jointly treating pickling wastewater and wastewater generated by rinsing stainless steel after pickling. It mainly provides the steps of gradually precipitating impurities and metal ions in the wastewater, but also does not provide corresponding devices suitable for implementing the above steps.

[0006] Therefore, according to the above technical scheme, further search is made for the corresponding mixing device for realizing and accelerating the neutralization effect. The prior art announcement is CN 210885469 U, a neutralization device for treating stainless steel pickling wastewater, comprising a neutralization box, a feeding box fixed to the top of the neutralization box by a supporting rod, the bottom walls of the two side walls of the feeding box are connected to a pipe, one end of the pipe is connected to the top wall of the neutralization box, and a water pump is installed on the pipe, a feeding pipe is symmetrically connected to the top wall of the feeding box, a motor 1 is installed in the middle position of the top wall of the feeding box, the output shaft of the motor 1 passes through the top wall of the feeding box and is connected to a stirring shaft 1, a plurality of stirring rods 1 are symmetrically welded on the side wall of the stirring shaft 1, a filter cartridge is fixed in the feeding box, a control panel is installed on the side wall of the feeding box, and a discharge pipe is connected to the bottom wall of the feeding box; the utility model is novel in design, simple in equipment, can effectively neutralize pickling wastewater, has good neutralization effect, high efficiency, and is easy to operate, and is worthy of promotion;

[0007] This solution is to solve the problem of quickly mixing the added lime water and waste acid liquid and improving the mixing quality; according to mechanical common sense or water flow mixing and stirring common sense, it can be known that the rapid mixing of wastewater requires the water flow and the added medium to generate mutual turbulence in order to achieve rapid neutralization; however, the stirring shaft 2 and the stirring rod 2 in the solution cannot provide sufficient turbulence for the waste acid water and lime water during stirring, and at the same time, the stirring method in the solution can only drive the wastewater to rotate sequentially along the rotation trajectory of the stirring shaft 2 and the stirring rod step by step. Therefore, it takes a lot of time to obtain a sufficient mixing effect according to this solution, and the efficiency is relatively low.

[0008] Therefore, in response to the above problems, this application provides a targeted mixing and stirring device for neutralization based on the above technical solutions and the prior art, which can quickly and effectively disturb and mix the acid-containing stainless steel flushing wastewater and lime water, thereby improving the mixing speed and mixing quality. Summary of the Invention

[0009] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a hot-rolled stainless steel rinse water purification device, which can effectively treat rinse wastewater and pickling wastewater. First, the wastewater is filtered and then irregularly disturbed by a first stirring mechanism and a second stirring mechanism to achieve rapid mixing and stirring, accelerate the neutralization effect, and improve the neutralization quality.

[0010] In order to achieve the above object, the technical solution adopted by the present invention is:

[0011] A hot-rolled stainless steel washing water purification treatment device includes a filtering mechanism, a mixing tank is provided below the filtering mechanism, a sedimentation mechanism is provided on one side of the mixing tank, a first stirring mechanism, a second stirring mechanism, a main shaft, and a power transmission mechanism are provided inside the mixing tank, a first bevel gear and a second bevel gear are provided on the top of the main shaft, the first bevel gear and the second bevel gear are set as half teeth, the first bevel gear and the second bevel gear are arranged opposite to each other, a support plate is provided in the middle section of the main shaft, and a first limiting groove is provided on the support plate; an expansion chamber and a feeding pipe are provided on the side of the mixing tank, and a second limiting groove and a fixing frame are provided on the expansion chamber; the first stirring mechanism is provided on the main shaft, and the second stirring mechanism is provided on the side wall of the mixing tank; the power transmission mechanism connects the main shaft and the second stirring mechanism to provide power for the rotation of the main shaft and the second stirring mechanism; the wastewater enters the filtering mechanism to filter impurities and oxide scales, and then enters the mixing tank to be mixed and stirred by the first stirring mechanism and the second stirring mechanism and mixed with the added lime water, and then the mixed wastewater enters the sedimentation mechanism for sedimentation treatment, and the mixing tank continues to enter the wastewater for mixing and stirring.

[0012] The first stirring mechanism includes a reciprocating screw, one end of which is fixedly connected to the main shaft; a first fan blade is provided at the optical axis of the reciprocating screw, and a fixed seat is also provided with a threaded connection; a first connecting rod is provided on the first fan blade, and a second connecting rod is provided on the fixed seat, and the ends of the first connecting rod and the second connecting rod are hingedly connected; a second fan blade is provided on the end of the second connecting rod.

[0013] The second stirring mechanism is provided with a third spline shaft, which is rotatably connected to the side wall of the mixing tank, and one end of the third spline shaft is provided with a bevel gear; the third spline shaft is provided with a first through groove, and the third spline shaft is set as a hollow shaft; the third spline shaft is provided with a sleeved connecting seat, and the connecting seat is provided with a symmetrical stirring rod, the stirring rod includes a first stirring arm and a second stirring arm, one end of the first stirring arm is hinged to the connecting seat, the second stirring arm is provided with a second through groove, one end of the second stirring arm is provided with a hinged fixed block, the fixed block is provided with a second limit block, and the second limit block is provided in the second limit groove; one end of the first stirring arm is provided in the second through groove and is slidably connected; the end of the first stirring arm is provided with a hinged third stirring arm, and one end of the second stirring arm is provided with a hinged fourth stirring arm, and one end of the third stirring arm is hinged to one end of the fourth stirring arm.

[0014] A limiting shaft is provided inside the third spline shaft, one end of which is fixedly connected to the fixing frame; a first limiting block is provided at one end of the limiting shaft and is located in the first limiting groove; a guide groove is provided on the limiting shaft, and the guide groove surrounds the limiting shaft half a circle; a fixedly connected collar is provided in the connecting seat, the collar is sleeved on the limiting shaft, and both ends of the collar are located in the first through groove, and a protrusion is provided on the collar, and the protrusion is located in the guide groove;

[0015] The top of the mixing tank is provided with a supporting flange; the side wall of the mixing tank is provided with a discharge hopper.

[0016] The power transmission mechanism includes a second motor, a third support plate, a first transmission shaft, a fourth support plate, a second transmission shaft, and a third transmission shaft; the third support plate and the fourth support plate are fixedly connected to the inner wall of the mixing tank; the first transmission shaft is rotatably connected to the third support plate, and a bevel gear is provided at the end of the first transmission shaft and meshes with a bevel gear provided on the top of the main shaft that matches it; the third transmission shaft is rotatably connected to the connecting plate on the fourth support plate; the second transmission shaft is rotatably connected to the fixed frame, and bevel gears are provided at both ends of the second transmission shaft, and the bevel gear at one end meshes with the bevel gear at the end of the third spline shaft; bevel gears are provided at both ends of the third transmission shaft, and the bevel gear at one end meshes with the first bevel gear and the second bevel gear, and the bevel gear at the other end meshes with the bevel gear at one end of the second transmission shaft; the second motor is fixed to the side wall of the mixing tank, and the output shaft of the second motor is connected to the first transmission shaft; power is provided by the second motor to drive the first transmission shaft, the second transmission shaft, and the third transmission shaft to rotate.

[0017] The sedimentation mechanism includes a sedimentation tank, a first pipe is provided on one side of the sedimentation tank, the first pipe is connected to the mixing tank to transfer the mixed wastewater, and the mixed wastewater is transferred into the sedimentation tank by arranging a water pump on the first pipe; a silt removal port that can be controlled to open and close is provided at the bottom of the sedimentation tank; a transparent chute and an outlet pipe are provided at the top of the sedimentation tank.

[0018] A compression mechanism is provided inside the sedimentation tank, the compression mechanism includes a third motor, a support frame, a second electric push rod, a mounting frame, a hydraulic cylinder, a pressure plate, and a screw; two ends of the screw are rotatably connected to the two ends of the sedimentation tank, the third motor is fixed on one side of the sedimentation tank and the output shaft is connected to one end of the screw, the support frame is provided with a support arm, the support arm is arranged in a slide groove, the top of the support frame is threadedly connected to the screw, connecting arms are provided on both sides of the mounting frame, the connecting arms are plugged in and slidably connected to the support frame, the second electric push rod is fixed on the support frame, and the top shaft of the second electric push rod is fixedly connected to the mounting frame; the mounting frame is slidably connected to the pressure plate, and a through hole is provided on the pressure plate; a first baffle is provided on both sides of the pressure plate, the first baffle is hollow and is provided with a second baffle that can be retracted and contracted by a spring; the hydraulic cylinder is fixed on the mounting frame, and the top shaft of the hydraulic cylinder is fixedly connected to the pressure plate; a suction pipe is provided on the mounting frame, and the suction pipe is provided above the pressure plate to suck and transfer the concentrated wastewater.

[0019] The filtering mechanism includes a filter tank, a fixing flange is provided on the outer wall of the filter tank and is fixedly connected to the mixing tank through bolts; a slag discharge port that can be controlled to open and close and corresponds to the discharge hopper is provided at the bottom of the filter tank; a filter cover is provided in the filter tank, the filter cover is set in a convex shape, the filter cover is supported by a supporting flange, a scraper is provided above the filter cover, the scraper is adapted to the convex surface of the convex filter cover, a first rotating shaft is provided at one end of the scraper, a sprocket is provided on the first rotating shaft, a first motor is fixed on the outer wall of the filter tank, a sprocket is provided at the shaft end of the first motor and is connected to the sprocket on the first rotating shaft through a chain; a filter cover is provided on the inner wall of the filter tank A first support plate is fixedly connected, and a through hole is provided in the middle of the first support plate; a second spline shaft is provided in the through hole and can rotate, a top plate is provided at one end of the second spline shaft, and the other end is plugged into the first rotating shaft and the filter cover to form a spline structure, the first spring is sleeved on the second spline shaft, and the first spring touches the top plate and the first support plate; a second support plate and an isolation cover are provided on the first support plate, and a first spline shaft is slidably connected on the second support plate, a wedge block is provided at one end of the first spline shaft, and a first electric push rod is provided at the other end, and the first electric push rod is fixed to the outer wall of the filter tank; the wedge block presses the top plate.

[0020] Compared with the prior art, the present invention has the following advantages:

[0021] 1) First, the wastewater enters the filtering mechanism to filter out impurities and oxide scales, and then enters the mixing tank to be mixed and stirred with the added lime water through the first stirring mechanism and the second stirring mechanism. The mixed wastewater then enters the sedimentation mechanism for sedimentation treatment, and the mixing tank continues to enter the wastewater for mixing and stirring. Through the above process, the metal ions in the wastewater can be fused and precipitated;

[0022] In the filtering mechanism, the stainless steel pickling wastewater and the wastewater generated by rinsing the surface of the stainless steel after pickling enter the filter tank through the water inlet, and the entering wastewater is preliminarily filtered by the filter cover; first, the first electric push rod pushes the first spline shaft, so that the wedge block presses the top plate, and then the second spline shaft is inserted into the first rotating shaft and the filter cover, so that the two are connected and can keep rotating synchronously. During rotation, the first rotating shaft, the scraper, and the filter cover are driven by the first motor to rotate; at this time, after the wastewater enters the filter tank, the water flow is scattered around under the rotation of the filter cover; it avoids the situation where impurities in the water directly rush into the flat filter plate after the water flows into the filter tank and block the filter plate in the first time when using a flat filter plate. After the filter cover rotates, the impurities and water flow are thrown to the periphery of the filter cover, which not only reduces the direct clogging of the middle part of the filter cover by impurities in the water to reduce the water flow rate, but also can concentrate the impurities in the water near the slag discharge port in advance to facilitate subsequent slag removal; at the same time, in order to ensure the amount of filtered water when the filter cover rotates, the scraper and the filter cover rotate simultaneously so that the wastewater on one side of the scraper and the filter cover remain relatively still, thereby ensuring the amount of wastewater filtered;

[0023] When it is necessary to clean the impurities on the filter cover, the top shaft of the first electric push rod is recovered and reset, so that the first spring pushes the top plate to pull the second spline shaft up, so that the second spline shaft is disconnected from the filter cover, and then the first motor can only rotate the scraper to scrape and clean the impurities along the slag discharge port; if necessary, the filter tank can be lifted by the hook to replace and repair the filter cover;

[0024] 2) After being filtered, the wastewater enters the mixing tank, where lime water is added through the feeding pipe. The second motor then drives the main shaft to rotate, which in turn drives the first stirring mechanism to rotate around the main shaft. The water flow resistance causes the first fan blade to rotate, which in turn drives the fixed seat to rotate, causing the fixed seat to move back and forth along the reciprocating screw. During the reciprocating movement of the fixed seat, the second fan blade is driven to swing back and forth through the second connecting rod, and the second fan blade itself is also moved left and right during the reciprocating swing. In this process, the movement of the second fan blade cooperates with the first fan blade to cause irregular turbulence of the wastewater by changing its area, thereby improving the turbulence effect and thus the mixing quality.

[0025] 3) At the same time, the rotation of the main shaft will intermittently drive the third transmission shaft to rotate forward and reverse through the first bevel gear and the second bevel gear, thereby driving the third spline shaft to rotate forward and reverse through the second transmission shaft; when the third spline shaft rotates, it drives the stirring rod to rotate along the second limiting groove, and at the same time, the sliding of the protrusion in the guide groove on the limiting shaft drives the connecting seat to slide on the third spline shaft, thereby driving the first stirring arm and the second stirring arm to slide relative to each other, contract or extend, and further drive the fourth stirring arm and the third stirring arm to retract or expand, thereby changing and adjusting the stirring and mixing area;

[0026] The rotation of the third spline shaft is achieved by controlling the first bevel gear and the second bevel gear, which are both half-teeth. Before the first stirring mechanism rotates to the second stirring mechanism and interferes with each other, the third spline shaft rotates in advance to retract the stirring rod to the side of the expansion chamber through the connecting seat to avoid interfering with the rotation of the first stirring mechanism. When the first stirring mechanism rotates to pass over the second stirring mechanism, the third spline shaft reverses and pushes the connecting seat to reset; during the resetting and movement of the stirring rod and the connecting seat, the stirring rod can rotate with the third spline shaft as the axis, and at the same time, as the connecting seat moves, the stirring area of ​​the stirring rod can also be adjusted and changed at any time; the coordinated use of the first bevel gear, the second bevel gear, the limiting shaft and the guide groove, the connecting seat, and the third spline shaft can ensure that the first stirring mechanism and the second stirring mechanism stir and mix the wastewater and lime water without interfering with each other, accelerate and effectively realize the turbulence of the lime water and the wastewater, and improve the mixing efficiency;

[0027] 4) The mixed wastewater is quickly pumped to the sedimentation tank for sedimentation, and then the mixing tank can mix the next tank of wastewater. After sedimentation, the supernatant is sucked out through the outlet pipe, and the precipitated sludge generated in the wastewater is concentrated by the compression mechanism; first, the third motor drives the support frame and the mounting frame to slide along the slide to the concentration position, and then the second electric push rod controls the mounting frame and the pressure plate to move downward, and further the hydraulic cylinder pushes the pressure plate downward to press and concentrate the sediment between the first baffles, and the wastewater generated after the pressing and concentration is sucked out through the suction pipe; then the support frame, the mounting frame, and the pressure plate are reset and moved to the next area for segmented concentration. Compared with the overall concentration method of the sedimentation tank, segmented concentration can improve the concentration quality; the concentrated sediment is removed through the desilting port; the treatment of sediment concentration improves the wastewater treatment efficiency and also improves the separation effect of wastewater and sediment. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Attachment Figure 1 This is a schematic structural diagram of a hot-rolled stainless steel washing water purification device of the present invention;

[0029] Attachment Figure 2 Schematic diagram of the sedimentation mechanism Figure 1 ;

[0030] Attachment Figure 3 Schematic diagram of the sedimentation mechanism Figure 2 ;

[0031] Attachment Figure 4 This is a schematic diagram of the structure of the filter mechanism Figure 1 ;

[0032] Attachment Figure 5 This is a schematic diagram of the structure of the filter mechanism Figure 2 ;

[0033] Attachment Figure 6 It is a schematic diagram of the internal structure of the mixing tank;

[0034] Attachment Figure 7 is a structural schematic diagram of the second stirring mechanism;

[0035] Attachment Figure 8 It is a structural diagram of the expansion room;

[0036] Attachment Figure 9 1 is a schematic structural diagram of a first stirring mechanism;

[0037] Attachment Figure 10 It is a structural diagram of the limit axis;

[0038] Attachment Figure 11 It is a structural diagram of the third spline shaft;

[0039] Attachment Figure 12 It is a structural diagram of the connecting seat;

[0040] In the figure: 1. Filter mechanism; 11. Filter tank; 12. Filter cover; 13. Scraper; 131. First rotating shaft; 14. First motor; 15. First support plate; 151. Second support plate; 16. Isolation cover; 17. First electric push rod; 171. First spline shaft; 172. Wedge block; 18. Second spline shaft; 181. Top plate; 19. First spring; 111. Slag discharge port; 112. Fixing flange; 113. Water inlet; 114. Hook;

[0041] 2. Mixing tank; 21. Power transmission mechanism; 201. Support flange; 202. Discharge hopper; 203. Feeding pipe; 204. Third support plate; 205. First transmission shaft; 206. Second motor; 207. Fourth support plate; 2071. Connecting plate; 208. Second transmission shaft; 209. Third transmission shaft; 210. Fixing bracket;

[0042] 22. Expansion chamber; 221. Second limiting groove; 23. Main shaft; 231. First bevel gear; 232. Second bevel gear; 233. Support plate; 234. First limiting groove;

[0043] 3. First stirring mechanism; 31. Reciprocating screw; 32. First fan blade; 33. Fixed seat; 34. First connecting rod; 35. Second connecting rod; 36. Second fan blade;

[0044] 4. Second stirring mechanism; 41. Third spline shaft; 411. First through-slot; 42. Limiting shaft; 421. Guide groove; 422. First limiting block; 43. Connecting seat; 431. Collar; 432. Protrusion; 44. Stirring rod; 441. First stirring arm; 442. Second stirring arm; 443. Second through-slot; 444. Third stirring arm; 445. Fourth stirring arm; 45. Fixing block; 46. Second limiting block;

[0045] 5. Sedimentation mechanism; 51. Sedimentation tank; 501. Desilting port; 502. Chute; 503. Outlet pipe; 52. Third motor; 521. Lead screw; 53. Support frame; 531. Support arm; 54. Second electric push rod; 55. Mounting frame; 551. Connecting arm; 56. Hydraulic cylinder; 57. Press plate; 571. First baffle; 572. Second baffle; 58. Suction pipe; 59. First pipeline. DETAILED DESCRIPTION

[0046] To facilitate understanding by those skilled in the art, Figure 1-12 , the technical solution of the present invention is further described in detail.

[0047] A hot-rolled stainless steel flushing water purification device includes a filtering mechanism 1, a mixing tank 2 is provided below the filtering mechanism 1, a sedimentation mechanism 5 is provided on one side of the mixing tank 2, a first stirring mechanism 3, a second stirring mechanism 4, a main shaft 23, and a power transmission mechanism 21 are provided inside the mixing tank 2, a first bevel gear 231 and a second bevel gear 232 are provided on the top of the main shaft 23, the first bevel gear 231 and the second bevel gear 232 are set as half teeth, the first bevel gear 231 and the second bevel gear 232 are arranged opposite to each other, a support plate 233 is provided in the middle section of the main shaft 23, and a first limiting groove 234 is provided on the support plate 233; an expansion chamber 22 and a feeding pipe 2 are provided on the side of the mixing tank 2 03, a second limiting groove 221 and a fixing frame 210 are provided on the expansion chamber 22; the first stirring mechanism 3 is provided on the main shaft 23, and the second stirring mechanism 4 is provided on the side wall of the mixing tank 2; the power transmission mechanism 21 connects the main shaft 23 and the second stirring mechanism 4 to provide power for the rotation of the main shaft 23 and the second stirring mechanism 4; the wastewater enters the filtering mechanism 1 to filter the impurities and oxide scale, and then enters the mixing tank 2 to be mixed and stirred by the first stirring mechanism 3 and the second stirring mechanism 4 and mixed and stirred with the lime water added along the feeding pipe 203, and then the mixed wastewater enters the sedimentation mechanism 5 for sedimentation treatment, and the mixing tank 2 continues to enter the wastewater for mixing and stirring.

[0048] The first stirring mechanism 3 includes a reciprocating screw 31, one end of which is fixedly connected to the main shaft 23; a first fan blade 32 is rotatably connected at the optical axis of the reciprocating screw 31, and a fixed seat 33 with a threaded connection is also provided on the reciprocating screw 31; a first connecting rod 34 is hingedly connected to the first fan blade 32, and a second connecting rod 35 is hingedly connected to the fixed seat 33, and the ends of the first connecting rod 34 and the second connecting rod 35 are hingedly connected; a second fan blade 36 is fixedly connected to the end of the second connecting rod 35.

[0049] The second stirring mechanism 4 is provided with a third spline shaft 41, which is rotatably connected to the side wall of the mixing tank 2, and a bevel gear is provided at one end of the third spline shaft 41; a first through groove 411 is provided on the third spline shaft 41, and the third spline shaft 41 is set as a hollow shaft; the third spline shaft 41 is provided with a sleeved connecting seat 43, and a symmetrical stirring rod 44 is provided on the connecting seat 43, and the stirring rod 44 includes a first stirring arm 441 and a second stirring arm 442, one end of the first stirring arm 441 is hinged to the connecting seat 43, and the second stirring arm 442 is provided with a There is a second through groove 443, and one end of the second stirring arm 442 is provided with a hinged fixed block 45, and the fixed block 45 is provided with a second limit block 46, and the second limit block 46 is arranged in the second limit groove 221; one end of the first stirring arm 441 is arranged in the second through groove 443 and is slidably connected; the end of the first stirring arm 441 is provided with a hinged third stirring arm 444, and one end of the second stirring arm 442 is provided with a hinged fourth stirring arm 445, and one end of the third stirring arm 444 is hinged to one end of the fourth stirring arm 445.

[0050] A limiting shaft 42 is provided inside the third spline shaft 41, and one end of the limiting shaft 42 is fixedly connected to the fixing frame 210; a first limiting block 422 is provided at one end of the limiting shaft 42 and is located in the first limiting groove 234; a guide groove 421 is provided on the limiting shaft 42, and the guide groove 421 surrounds the limiting shaft 42 for half a circle; a fixedly connected ring 431 is provided in the connecting seat 43, the ring 431 is sleeved on the limiting shaft 42 and both ends of the ring are arranged in the first through groove 411, and a protrusion 432 is provided on the ring 431, and the protrusion 432 is arranged in the guide groove 421.

[0051] The top of the mixing tank 2 is provided with a supporting flange 201 ; the side wall of the mixing tank 2 is provided with a discharge hopper 202 .

[0052] The power transmission mechanism 21 includes a second motor 206, a third support plate 204, a first transmission shaft 205, a fourth support plate 207, a second transmission shaft 208, and a third transmission shaft 209; the third support plate 204 and the fourth support plate 207 are fixedly connected to the inner wall of the mixing tank 2; the first transmission shaft 205 is rotatably connected to the third support plate 204, and the end of the first transmission shaft 205 is provided with a bevel gear and meshes with the bevel gear provided on the top of the main shaft 23; the third transmission shaft 209 is rotatably connected to the connecting plate 2071 on the fourth support plate 207; the second transmission shaft 208 is rotatably connected to the fixed The fixed frame 210 and the second transmission shaft 208 are provided with bevel gears at both ends, and the bevel gear at one end is engaged with the bevel gear at the end of the third spline shaft 41; the third transmission shaft 209 is provided with bevel gears at both ends, and the bevel gear at one end is engaged with the first bevel gear 231 and the second bevel gear 232, and the bevel gear at the other end is engaged with the bevel gear at one end of the second transmission shaft 208; the second motor 206 is fixed on the side wall of the mixing tank 2, and the output shaft of the second motor 206 is connected to the first transmission shaft 205; the second motor 206 provides power to drive the first transmission shaft 205, the second transmission shaft 208, and the third transmission shaft 209 to rotate.

[0053] The sedimentation mechanism 5 includes a sedimentation tank 51, and a first pipe 59 is provided on one side of the sedimentation tank 51. The first pipe 59 is connected to the mixing tank 2 to transfer the mixed wastewater. The mixed wastewater is transferred into the sedimentation tank 51 by arranging a water pump on the first pipe 59; a silt removal port 501 that can be controlled to open and close is provided at the bottom of the sedimentation tank 51; a transparent chute 502 and an outlet pipe 503 are provided at the top of the sedimentation tank 51.

[0054] A compression mechanism is provided inside the sedimentation tank 51, which includes a third motor 52, a support frame 53, a second electric push rod 54, a mounting frame 55, a hydraulic cylinder 56, a pressure plate 57, and a screw 521; both ends of the screw 521 are rotatably connected to the two ends of the sedimentation tank 51, the third motor 52 is fixed to one side of the sedimentation tank 51 and the output shaft is connected to one end of the screw 521, a support arm 531 is provided on the support frame 53, the support arm 531 is provided in the slide groove 502, the top of the support frame 53 is threadedly connected to the screw 521, and connecting arms 551 are provided on both sides of the mounting frame 55, and the connecting arms 551 are plugged and slidably connected to the support The support frame 53 and the second electric push rod 54 are fixed on the support frame 53, and the top shaft of the second electric push rod 54 is fixedly connected to the mounting frame 55; the mounting frame 55 is slidably connected to the pressure plate 57, and the pressure plate 57 is provided with a through hole; a first baffle 571 is provided on both sides of the pressure plate 57, and the first baffle 571 is hollow and has a retractable second baffle 572 inside which is pressed by a spring; the hydraulic cylinder 56 is fixed on the mounting frame 55, and the top shaft of the hydraulic cylinder 56 is fixedly connected to the pressure plate 57; a suction pipe 58 is provided on the mounting frame 55, and the suction pipe 58 is provided above the pressure plate 57 to suck and transfer the concentrated wastewater.

[0055] The filtering mechanism 1 includes a filter tank 11, a fixing flange 112 is provided on the outer wall of the filter tank 11 and is fixedly connected to the mixing tank 2 through bolts; a slag discharge port 111 that can be controlled to open and close is provided at the bottom end of the filter tank 11 and corresponds to the discharge hopper 202; a filter cover 12 is provided in the filter tank 11, and the filter cover 12 is configured to be convex, and the filter cover 12 is supported by a supporting flange 201, and a scraper 13 is provided above the filter cover 12, and the scraper 13 is adapted to the convex surface of the raised filter cover 12, and a first rotating shaft 131 is provided at one end of the scraper 13, and a sprocket is provided on the first rotating shaft 131, and a first motor 14 is fixed on the outer wall of the filter tank 11, and a sprocket is provided at the shaft end of the first motor 14 and is connected to the sprocket on the first rotating shaft 131 through a chain; a fixing A first support plate 15 is fixedly connected, and a through hole is provided in the middle of the first support plate 15; a second spline shaft 18 is provided in the through hole and can rotate, a top plate 181 is provided at one end of the second spline shaft 18, and the other end is plugged into the first rotating shaft 131 and the filter cover 12 to form a spline structure, a first spring 19 is sleeved on the second spline shaft 18, and the first spring 19 touches the top plate 181 and the first support plate 15; a second support plate 151 and an isolation cover 16 are provided on the first support plate 15, and a first spline shaft 171 is provided on the second support plate 151 for sliding connection, a wedge block 172 is provided at one end of the first spline shaft 171, and a first electric push rod 17 is provided at the other end, and the first electric push rod 17 is fixed to the outer wall of the filter tank 11; the wedge block 172 presses the top plate 181.

[0056] A hot-rolled stainless steel washing water purification device, the working process is as follows:

[0057] Stainless steel pickling wastewater and wastewater generated by rinsing the surface of stainless steel after pickling enter the filter tank 11 through the water inlet 113, and the entering wastewater is preliminarily filtered through the filter cover 12; first, the first electric push rod 17 pushes the first spline shaft 171, so that the wedge block 172 presses the top plate 181, and then the second spline shaft 18 is inserted into the first rotating shaft 131 and the filter cover 12, so that the two are connected and can keep rotating synchronously. When rotating, the first rotating shaft 131, the scraper 13, and the filter cover 12 are driven to rotate by the first motor 14; at this time, after the wastewater enters the filter tank 11, the water flow is scattered around under the rotation of the filter cover 12; avoid In order to avoid the situation where impurities in the water directly rush into the flat filter plate and clog the filter plate immediately after the water flows into the filter tank 11 when using a flat filter plate, the filter cover 12 rotates to swing the impurities and water flow to the periphery of the filter cover 12, which not only reduces the direct clogging of the middle part of the filter cover 12 by impurities in the water to reduce the water flow rate, but also can concentrate the impurities in the water near the slag discharge port 111 in advance to facilitate subsequent slag removal; at the same time, in order to ensure the amount of filtered water when the filter cover 12 rotates, the scraper 13 and the filter cover 12 are rotated at the same time, so that the wastewater on one side of the scraper 13 and the filter cover 12 remain relatively still, thereby ensuring the amount of wastewater filtered.

[0058] Furthermore, when it is necessary to clean the impurities on the filter cover 12, the first electric push rod 17 is retracted and reset, so that the first spring 19 pushes the top plate 181 to pull the second spline shaft 18 up, so that the second spline shaft 18 is disengaged from the filter cover 12, and then the first motor 14 can only rotate the scraper 13 to scrape and clean the impurities along the slag discharge port 111; if necessary, the filter tank 11 can be lifted by the hook 114 to replace and repair the filter cover 12.

[0059] After filtration, the wastewater enters the mixing tank 2, lime water is added through the feeding pipe 203, and then the main shaft 23 is driven to rotate by the second motor 206. The rotation of the main shaft 23 will simultaneously drive the first stirring mechanism 3 to rotate with the main shaft 23 as the axis. The water flow resistance causes the first fan blade 32 to rotate, and then drives the fixed seat 33 to rotate, so that the fixed seat 33 moves back and forth along the reciprocating screw 31. During the reciprocating movement of the fixed seat 33, the second fan blade 36 is driven to swing back and forth through the second connecting rod 35, and the left and right movement of the second fan blade 36 itself is also realized during the reciprocating swinging process.

[0060] At the same time, the rotation of the main shaft 23 will intermittently drive the third transmission shaft 209 to rotate forward and reverse through the first bevel gear 231 and the second bevel gear 232, thereby driving the third spline shaft 41 to rotate forward and reverse through the second transmission shaft 208; when the third spline shaft 41 rotates, it drives the stirring rod 44 to rotate along the second limiting groove 221, and at the same time, the protrusion 432 slides in the guide groove 421 on the limiting shaft 42, driving the connecting seat 43 to slide on the third spline shaft 41, thereby driving the first stirring arm 441 and the second stirring arm 442 to slide and contract or stretch with each other, and further driving the fourth stirring arm 445 and the third stirring arm 444 to fold or expand to form a change and adjustment to the stirring and mixing area.

[0061] When the rotation of the third spline shaft 41 is achieved by controlling the first bevel gear 231 and the second bevel gear 232, which are both half teeth, before the first stirring mechanism 3 rotates to the second stirring mechanism 4 and interferes with each other, the third spline shaft 41 rotates in advance through the connecting seat 43 to retract the stirring rod 44 to one side of the expansion chamber 22 to avoid interfering with the rotation of the first stirring mechanism 3. When the first stirring mechanism 3 rotates over the second stirring mechanism 4, the third spline shaft 41 reverses and pushes the connecting seat 43 to reset; during the resetting and movement of the stirring rod 44 and the connecting seat 43, the stirring rod 44 can rotate with the third spline shaft 41 as the axis. At the same time, as the connecting seat 43 moves, the stirring area of ​​the stirring rod 44 also changes and adjusts at any time; the coordinated use of the first bevel gear 231, the second bevel gear 232, the limiting shaft 42 and the guide groove 421, the connecting seat 43, and the third spline shaft 41 can ensure that the first stirring mechanism 3 and the second stirring mechanism 4 stir and mix the wastewater and lime water without interfering with each other, accelerate and effectively realize the turbulence of the lime water and the wastewater, and improve the mixing efficiency.

[0062] Furthermore, the mixed wastewater is quickly sucked into the sedimentation tank 51 for sedimentation, and then the mixing tank 2 can mix the next tank of wastewater. After sedimentation, the supernatant is sucked out through the outlet pipe 503, and the precipitated sludge generated in the wastewater is concentrated by the compression mechanism; first, the third motor 52 drives the support frame 53 and the mounting frame 55 to slide along the slide 502 to the concentration position, and then the second electric push rod 54 controls the mounting frame 55 and the pressure plate 57 to move downward, and further the hydraulic cylinder 56 pushes the pressure plate 57 downward to press the sediment between the first baffle 571 to compress and concentrate, and the wastewater generated after compression and concentration is sucked out through the suction pipe 58; then the support frame 53, the mounting frame 55, and the pressure plate 57 are reset and moved to the next area for segmented concentration. Compared with the overall concentration method of the sedimentation tank, segmented concentration can improve the concentration quality; the concentrated sediment is removed through the silt removal port 501; the above can realize the filtration and neutralization precipitation treatment of cleaning wastewater and pickling wastewater.

[0063] In the description of the present invention, unless otherwise specified, "plurality" means two or more; terms such as "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," and "tail" indicate positions or relationships based on those shown in the accompanying drawings. These terms are intended solely to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the present invention. Furthermore, terms such as "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0064] In summary, the electronic or electrical components including but not limited to electric push rods, motors, etc. are components in the prior art, obtained through private customization or purchase, and the electrical connections between the components are conventional circuit connections or electrical connections in the prior art, and are not within the scope of protection of the present invention;

[0065] The above content is merely an example and explanation of the structure of the present invention. Those skilled in the art may make various modifications or additions to the described specific embodiments or replace them in a similar manner. As long as they do not deviate from the structure of the invention or exceed the scope defined by the claims, they should all fall within the scope of protection of the present invention.

Claims

1. A hot-rolled stainless steel washing water purification device, including a filtering mechanism, characterized in that A mixing tank is provided below the filtering mechanism, a sedimentation mechanism is provided on one side of the mixing tank, a first stirring mechanism, a second stirring mechanism, a main shaft, and a power transmission mechanism are provided inside the mixing tank, a first bevel gear and a second bevel gear are provided on the top of the main shaft, the first bevel gear and the second bevel gear are set as half teeth, the first bevel gear and the second bevel gear are arranged opposite to each other, a support plate is provided in the middle section of the main shaft, and a first limiting groove is provided on the support plate; an expansion chamber and a feeding pipe are provided on the side of the mixing tank, and a second limiting groove and a fixing frame are provided on the expansion chamber; the first stirring mechanism is provided on the main shaft, and the second stirring mechanism is provided on the side wall of the mixing tank; the power transmission mechanism connects the main shaft and the second stirring mechanism to provide power for the rotation of the main shaft and the second stirring mechanism; the wastewater enters the filtering mechanism to filter impurities and oxide scales, and then enters the mixing tank to be mixed and stirred by the first stirring mechanism and the second stirring mechanism and mixed with the added lime water, and then the mixed wastewater enters the sedimentation mechanism for precipitation treatment, and the mixing tank continues to enter the wastewater for mixing and stirring; The first stirring mechanism includes a reciprocating screw, one end of which is fixedly connected to the main shaft; a first fan blade is rotatably connected to the optical axis of the reciprocating screw, and a fixing seat is also provided on the reciprocating screw; a first connecting rod is hingedly connected to the first fan blade, and a second connecting rod is hingedly connected to the fixing seat, and the ends of the first connecting rod and the second connecting rod are hingedly connected; and a second fan blade is fixedly connected to the end of the second connecting rod; The second stirring mechanism is provided with a third spline shaft, which is rotatably connected to the side wall of the mixing tank, and one end of the third spline shaft is provided with a bevel gear; the third spline shaft is provided with a first through groove, and the third spline shaft is set as a hollow shaft; the third spline shaft is provided with a sleeved connecting seat, and the connecting seat is provided with a symmetrical stirring rod, the stirring rod includes a first stirring arm and a second stirring arm, one end of the first stirring arm is hinged to the connecting seat, the second stirring arm is provided with a second through groove, one end of the second stirring arm is provided with a hinged fixed block, the fixed block is provided with a second limit block, and the second limit block is provided in the second limit groove; one end of the first stirring arm is provided in the second through groove and is slidably connected; the end of the first stirring arm is provided with a hinged third stirring arm, and one end of the second stirring arm is provided with a hinged fourth stirring arm, and one end of the third stirring arm is hinged to one end of the fourth stirring arm.

2. A hot-rolled stainless steel washing water purification device according to claim 1, characterized in that A limiting shaft is provided inside the third spline shaft, one end of which is fixedly connected to the fixing frame; a first limiting block is provided at one end of the limiting shaft and is located in the first limiting groove; a guide groove is provided on the limiting shaft, and the guide groove surrounds the limiting shaft half a circle; a collar is provided in the connecting seat, the collar is sleeved on the limiting shaft, and both ends of the collar are located in the first through groove, and a protrusion is provided on the collar, and the protrusion is located in the guide groove; The top of the mixing tank is provided with a supporting flange; the side wall of the mixing tank is provided with a discharge hopper.

3. The hot-rolled stainless steel washing water purification device according to claim 1 is characterized in that The power transmission mechanism includes a second motor, a third support plate, a first transmission shaft, a fourth support plate, a second transmission shaft, and a third transmission shaft; the third support plate and the fourth support plate are fixedly connected to the inner wall of the mixing tank; the first transmission shaft is rotatably connected to the third support plate, and a bevel gear is provided at the end of the first transmission shaft and meshes with the bevel gear provided on the top of the main shaft that matches it; the third transmission shaft is rotatably connected to the connecting plate on the fourth support plate; the second transmission shaft is rotatably connected to the fixed frame, and bevel gears are provided at both ends of the second transmission shaft, one of which is meshed with the bevel gear at the end of the third spline shaft; bevel gears are provided at both ends of the third transmission shaft, one of which is meshed with the first bevel gear and the second bevel gear, and the other end is meshed with the bevel gear at one end of the second transmission shaft; the second motor is fixed to the side wall of the mixing tank, and the output shaft of the second motor is connected to the first transmission shaft; The second motor provides power to drive the first transmission shaft, the second transmission shaft and the third transmission shaft to rotate.

4. The hot-rolled stainless steel washing water purification device according to claim 1 is characterized in that The sedimentation mechanism includes a sedimentation tank, a first pipe is provided on one side of the sedimentation tank, the first pipe is connected to the mixing tank to transfer the mixed wastewater, and the mixed wastewater is transferred into the sedimentation tank by arranging a water pump on the first pipe; a silt removal port that can be controlled to open and close is provided at the bottom of the sedimentation tank; a transparent chute and an outlet pipe are provided at the top of the sedimentation tank.

5. The hot-rolled stainless steel washing water purification device according to claim 4 is characterized in that A compression mechanism is provided inside the sedimentation tank, the compression mechanism includes a third motor, a support frame, a second electric push rod, a mounting frame, a hydraulic cylinder, a pressure plate, and a screw; two ends of the screw are rotatably connected to the two ends of the sedimentation tank, the third motor is fixed on one side of the sedimentation tank and the output shaft is connected to one end of the screw, the support frame is provided with a support arm, the support arm is arranged in a slide groove, the top of the support frame is threadedly connected to the screw, connecting arms are provided on both sides of the mounting frame, the connecting arms are plugged in and slidably connected to the support frame, the second electric push rod is fixed on the support frame, and the top shaft of the second electric push rod is fixedly connected to the mounting frame; the mounting frame is slidably connected to the pressure plate, and a through hole is provided on the pressure plate; a first baffle is provided on both sides of the pressure plate, the first baffle is hollow and is provided with a second baffle that can be retracted and contracted by a spring; the hydraulic cylinder is fixed on the mounting frame, and the top shaft of the hydraulic cylinder is fixedly connected to the pressure plate; a suction pipe is provided on the mounting frame, and the suction pipe is provided above the pressure plate to suck and transfer the concentrated wastewater.

6. The hot-rolled stainless steel washing water purification device according to claim 1 is characterized in that The filtering mechanism includes a filter tank, a fixing flange is provided on the outer wall of the filter tank and is fixedly connected to the mixing tank through bolts; a slag discharge port that can be controlled to open and close and corresponds to the discharge hopper is provided at the bottom of the filter tank; a filter cover is provided in the filter tank, the filter cover is set in a convex shape, the filter cover is supported by a supporting flange, a scraper is provided above the filter cover, the scraper is adapted to the convex surface of the convex filter cover, a first rotating shaft is provided at one end of the scraper, a sprocket is provided on the first rotating shaft, a first motor is fixed on the outer wall of the filter tank, a sprocket is provided at the shaft end of the first motor and is connected to the sprocket on the first rotating shaft through a chain; a filter cover is provided on the inner wall of the filter tank A first support plate is fixedly connected, and a through hole is provided in the middle of the first support plate; a second spline shaft is provided in the through hole and can rotate, a top plate is provided at one end of the second spline shaft, and the other end is plugged into the first rotating shaft and the filter cover to form a spline structure, the first spring is sleeved on the second spline shaft, and the first spring touches the top plate and the first support plate; a second support plate and an isolation cover are provided on the first support plate, and a first spline shaft is slidably connected on the second support plate, a wedge block is provided at one end of the first spline shaft, and a first electric push rod is provided at the other end, and the first electric push rod is fixed to the outer wall of the filter tank; the wedge block presses the top plate.

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