Industrial polishing wastewater circulation tank and wastewater treatment device

Abstract

The invention relates to the field of wastewater treatment, in particular to an industrial polishing wastewater circulation box and a wastewater treatment device. The industrial polishing wastewater circulation box comprises a precipitation bin, a ferromagnetic metal separation bin and a blanking port; a magnetic roller, a connecting roller, a rotary driver, a scraping ring and a driving unit are arranged in the ferromagnetic metal separation bin; the magnetic roller is rotationally arranged under the blanking opening in the horizontal direction, and a magnetic suction area is formed by the magnetic roller; the number of the connecting rollers is two, the two connecting rollers are fixedly arranged at the two ends of the magnetic roller respectively and are coaxial with the magnetic roller respectively, the connecting rollers form a blanking area, and the magnetic roller and the two connecting rollers jointly form a rotating roller; the rotary driver is arranged on the side wall of the ferromagnetic metal separation bin and used for driving the rotating roller to rotate; the scraping ring movably sleeves the rotating roller along the axis of the rotating roller, and the inner diameter of the scraping ring is the same as the diameter of the rotating roller; the driving unit is arranged on one side of the scraping ring. According to the device, separation operation can be continuously carried out, and the situation that ferromagnetic metal falls off after being adsorbed can also be avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of wastewater treatment, in particular to an industrial polishing wastewater circulating tank and wastewater treatment device. BACKGROUND

[0002] When polishing metal plates, two steps of rough grinding and fine grinding are mainly included. The wastewater in the rough grinding stage is relatively simple, which is composed of additives in the grinding fluid, workpiece surface oil stains, metal scraps and metal particles. The wastewater in the fine grinding stage is complex, which is composed of multiple grinding additives and metal particles. If the wastewater produced in the two stages is mixed for treatment, the difficulty of treatment will be increased.

[0003] A steel belt polishing wastewater treatment system is disclosed in Chinese Patent No. CN116143329B, which includes a rough grinding sedimentation tank, a rough grinding water storage tank, a rough grinding lifting pump and a rough grinding filter press. The upper part of the rough grinding sedimentation tank is connected with the rough grinding water storage tank. The rough grinding water storage tank returns water to the rough grinding unit through the rough grinding lifting pump. The lower part of the rough grinding sedimentation tank is connected with the rough grinding filter press. The water separated by the rough grinding filter press is returned to the rough grinding water storage tank. The steel belt polishing wastewater treatment system further includes a flat bed filter, a fine grinding circulating tank, a centrifugal pump, a wastewater storage barrel, a fine grinding neutralization barrel, a fine grinding sedimentation barrel, a fine grinding filter press and a water storage barrel connected in sequence. The fine grinding circulating tank is further connected with a dispensing chemical water barrel. The water in the upper part of the fine grinding sedimentation barrel and the rough grinding wastewater in the rough grinding water storage tank are connected with a membrane treatment device through a pipeline. The membrane treatment device is connected with the water storage barrel.

[0004] The above-mentioned scheme separately treats the wastewater of the two stages. Since the sedimentation method is used in solid-liquid separation, the metal particles or metal scraps are mixed with impurities. In the prior art, the sedimented solid mixture is subjected to secondary recovery, and after multiple impurity removal processes, the metal particles are purified. In the steel polishing process, the metal scraps or particles generated are mostly ferromagnetic, so in the first step of the subsequent impurity removal process, the metal scraps or particles can be adsorbed by a magnet to achieve preliminary separation from other impurities. Two methods are mainly used in the separation. One is to directly insert a magnet into the sedimented mixture and use the magnet for adsorption, but this will cause the impurities to adhere to the magnet, resulting in poor impurity removal effect. The other is to use recycled water to flush and scatter the sedimented mixture, so that the magnet moves in the water containing metal scraps and impurities to complete the preliminary separation of metal and other impurities. Since there is recycled water flushing, impurities are not easy to adhere, and the impurity removal effect is good.

[0005] If the above magnetic attraction process is set before solid-liquid separation, the wastewater discharged into the sedimentation tank first passes through the magnetic attraction process and then enters the sedimentation tank for sedimentation. The flowability of the wastewater makes the wastewater flow through the equipment corresponding to the magnetic attraction process before entering the sedimentation. Compared with the traditional method of using recycled water to flush and scatter after the sedimentation is completed, the magnetic attraction efficiency is higher. This is because the metal debris in the wastewater before entering the sedimentation tank is in a free state and does not need to be flushed again. However, during the polishing process of the steel material, wastewater is continuously produced, and the equipment corresponding to the magnetic attraction process needs to be continuously operated, resulting in the need for regular recovery and cleaning of the metal debris or particles adsorbed in the magnetic attraction process. Otherwise, the adsorption capacity will decrease, resulting in a large amount of ferromagnetic metal debris remaining in the subsequent sedimentation process. SUMMARY

[0006] To solve the above problems, the embodiments of the present application provide an industrial polishing wastewater circulating tank and a wastewater treatment device. A high-efficiency and stable pre-magnetic separation system is constructed through the cooperation of a magnetic roller, a connecting roller, a rotary driver, a scraping ring and a driving unit. The rotary driver drives the magnetic roller to rotate at a constant speed, realizing uniform adsorption of metal debris without local accumulation. The driving unit drives the scraping ring to move back and forth at a predetermined interval, accurately scraping off the debris and making it neatly accumulate at the front end of the scraping ring. In combination with the non-magnetic material falling area of the connecting roller, the metal debris is naturally separated after moving to the connecting roller area.

[0007] To solve the problems of the prior art, the present application provides an industrial polishing wastewater circulating tank, which comprises a sedimentation bin, a ferromagnetic metal separation bin and a material falling port arranged at the upper part of the ferromagnetic metal separation bin. A magnetic roller, a connecting roller, a rotary driver, a scraping ring and a driving unit are arranged in the ferromagnetic metal separation bin. The magnetic roller is arranged vertically below the material falling port and forms a magnetic attraction area. The connecting roller is provided with two connecting rollers, which are fixedly arranged at the two ends of the magnetic roller and coaxial with the magnetic roller respectively. The connecting roller forms a material falling area, and the magnetic roller and the two connecting rollers jointly form a rotating roller. The rotary driver is arranged on the side wall of the ferromagnetic metal separation bin and is used to drive the rotating roller to rotate. The scraping ring is movably arranged on the rotating roller along the axis of the rotating roller, and the inner diameter of the scraping ring is the same as the diameter of the rotating roller. The driving unit is arranged on one side of the scraping ring and is used to drive the scraping ring to move.

[0008] Further, two first rubber rings are arranged on the scraping ring, and the two first rubber rings are arranged at the two ends of the scraping ring and on the inner ring of the scraping ring respectively. The inner ring of the first rubber ring is in interference fit with the rotating roller.

[0009] Further, a second rubber ring is arranged on the inner ring of the scraping ring, and a plurality of extension bars arranged around the axis of the second rubber ring are arranged on the inner ring side of the second rubber ring, and the extension bars extend towards the rotating roller and are in contact with the surface of the rotating roller.

[0010] Further, a forming sleeve is sleeved on the periphery of the scraping ring, the forming sleeve has a ring structure, a ring groove is formed on the inner ring side of the forming sleeve, the ring groove is coaxial with the forming sleeve, an extension ring is coaxially fixed on the outer side of the scraping ring, the extension ring slides in the ring groove, the axial length of the scraping ring is less than the axial length of the forming sleeve, and the driving unit drives the scraping ring to move through the forming sleeve.

[0011] Further, the circulating box further comprises electromagnets, the electromagnets are arranged on both ends of the rotating roller, and the scraping ring is made of ferromagnetic material.

[0012] Further, a plurality of limiting grooves are uniformly formed on the outer ring side of the extension ring around the axis of the extension ring, a plurality of limiting bars are uniformly formed on the ring groove around the axis of the ring groove, and the limiting bars are in clamping connection with the limiting grooves.

[0013] Further, a driving frame is arranged on the outer side of the forming sleeve, the forming sleeve is in rotational connection with the driving frame, and the driving unit is directly connected with the driving frame.

[0014] Further, a shielding plate is arranged above the driving frame.

[0015] Further, a guide groove parallel to the extension direction of the rotating roller is arranged on the upper portion of the shielding plate.

[0016] The application further provides an industrial polishing wastewater treatment device comprising the industrial polishing wastewater circulating box and the chemical reagent treatment tank.

[0017] Compared with the prior art, the application has at least the following beneficial effects: 1、The application cooperates the magnetic roller, the connecting roller, the rotary driver, the scraping ring and the driving unit to build a high-efficiency and stable front magnetic separation system. The rotary driver drives the magnetic roller to rotate at a constant speed to realize uniform adsorption of metal scraps without local accumulation. The driving unit drives the scraping ring to reciprocate at a preset interval to accurately scrape the scraps and make them regularly accumulate at the front end of the scraping ring. In combination with the non-magnetic material falling area of the connecting roller, the metal scraps are naturally separated after moving to the connecting roller area. This structure realizes automatic connection of adsorption, scraping and separation without additional scattering process, and effectively avoids the entry of metal scraps into the sedimentation bin.

[0018] 2. Through the timing linkage design of the scraping ring and the driving unit, the receiving groove structure composed of the forming sleeve and the extension ring, and the magnetic attraction ejection mechanism of the electromagnet, the continuous cleaning and directional collection of metal scraps are realized. The scraping ring ensures complete scraping through the interference fit of the first rubber ring, the receiving groove effectively intercepts the scraps that may fall during the scraping process, and the electromagnet pushes the scraping ring to complete the ejection and collection of the scraps. The whole process does not need to stop, which not only solves the problem of decay of the adsorption capacity of traditional magnetic attraction equipment after continuous operation, but also avoids the scattering of metal scraps into the sedimentation tank, ensuring the stable operation ability of the equipment in the continuous industrial production scene.

[0019] 3. Through the extension strip structure of the second rubber ring, the buffer design of the third rubber ring, the clamping cooperation of the limiting groove and the limiting strip, and the rolling ball rotary connection between the forming sleeve and the driving frame, the wear and tear during the operation of the equipment is greatly reduced. At the same time, through the design of the staged recycling of coarse grinding and fine grinding wastewater, the cross mixing of wastewater in different processes is avoided, further reducing the difficulty of subsequent treatment. The above structure optimization not only prolongs the service life of the first rubber ring, the forming sleeve and other core components, reduces the frequency of later maintenance and replacement, and reduces the comprehensive use cost, but also improves the operation efficiency of the overall wastewater treatment system through the quality recycling design. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a three-dimensional schematic view of an industrial polishing wastewater circulating tank in an embodiment of the present application; Figure 2 is a three-dimensional schematic view of an industrial polishing wastewater circulating tank in an embodiment of the present application; Figure 1 Figure 3 is a three-dimensional schematic view of an industrial polishing wastewater circulating tank in an embodiment of the present application; Figure 2 Figure 4 is a three-dimensional schematic view of an industrial polishing wastewater circulating tank in an embodiment of the present application; Figure 3 is a three-dimensional schematic view of an industrial polishing wastewater circulating tank in an embodiment of the present application; Figure 5 is a three-dimensional schematic view of an industrial polishing wastewater circulating tank in an embodiment of the present application; Figure 6 is a three-dimensional schematic view of an industrial polishing wastewater circulating tank in an embodiment of the present application; Figure 7 is a three-dimensional schematic view of an industrial polishing wastewater circulating tank in an embodiment of the present application; Figure 8 is a three-dimensional schematic view of an industrial polishing wastewater circulating tank in an embodiment of the present application; Figure 9 ​​The industrial polishing wastewater circulating box of the present application Figure 8 The local enlarged schematic view at B in the figure; Figure 10 The exploded perspective view of the industrial polishing wastewater circulating box of the present application after removing the ferromagnetic metal separation bin.

[0021] Reference signs: 1, sedimentation bin; 2, ferromagnetic metal separation bin; 21, magnetic roller; 22, connecting roller; 23, rotary driver; 24, scraping ring; 241, first rubber ring; 242, second rubber ring; 2421, extension strip; 243, extension ring; 244, limiting groove; 245, third rubber ring; 25, driving unit; 26, forming sleeve; 261, ring groove; 262, limiting strip; 27, driving frame; 271, rolling ball; 28, shielding plate; 281, guide groove; 3, discharging port; 4, electromagnet; 5, discharge bin. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0023] The terms “first”, “second”, and the like in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be exchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein. In addition, “and / or” in the specification and claims indicates at least one of the connected objects, and the character “ / ” generally indicates that the front and rear associated objects are in an “or” relationship. For example, Figure 1 and Figure 3The industrial polishing wastewater circulating tank of the embodiment of the present application comprises: a sedimentation bin 1, a ferromagnetic metal separation bin 2 and a material falling port 3 arranged at the upper part of the ferromagnetic metal separation bin 2; a magnetic roller 21, a connecting roller 22, a rotary driver 23, a scraping ring 24 and a driving unit 25 are arranged in the ferromagnetic metal separation bin 2; the magnetic roller 21 is arranged in a horizontal direction directly below the material falling port 3, and the magnetic roller 21 forms a magnetic attraction area. The connecting roller 22 is arranged in two, and the two connecting rollers 22 are fixedly arranged at the two ends of the magnetic roller 21 respectively and are coaxial with the magnetic roller 21 respectively, the connecting roller 22 forms a material falling area, and the magnetic roller 21 and the two connecting rollers 22 jointly form a rotating roller; the rotary driver 23 is arranged on the side wall of the ferromagnetic metal separation bin 2 and is used for driving the rotating roller to rotate. The scraping ring 24 is movably sleeved on the rotating roller along the axis of the rotating roller, and the inner diameter of the scraping ring 24 is the same as the diameter of the rotating roller. The driving unit 25 is arranged on one side of the scraping ring 24 and is used for driving the scraping ring 24 to move.

[0024] In the prior art, in order to optimize the process path, the magnetic attraction link after the solid-liquid separation and sedimentation is moved forward to before the wastewater enters the sedimentation tank. In this improved scheme, the polishing wastewater to be treated will first flow through a special magnetic attraction treatment device and then enter the sedimentation tank to complete the subsequent solid-liquid separation. The whole process forms a closed loop relying on the conveying path of the wastewater itself, and does not need to additionally increase material transfer and dispersion devices, thereby achieving simplification from the process layout.

[0025] However, this optimized process also faces new technical problems in the continuous industrial production scene. In steel polishing operations, the production line usually operates continuously all day long, and the corresponding polishing wastewater is also continuously produced, which requires the pre-positioned magnetic attraction treatment device to also maintain a long-time continuous working state. During the continuous operation of the device, the surface of the magnetic attraction part will continuously adsorb ferromagnetic metal debris and particles. As the adsorption amount gradually accumulates, the effective adsorption area of the magnetic attraction part will gradually decrease, and the magnetic field strength will also decay due to the accumulation of metal, thereby causing the overall adsorption capacity to continuously decrease. If the adsorbed metal debris cannot be recovered and cleaned in time and regularly, a large amount of ferromagnetic metal debris in the subsequent wastewater flowing through the device cannot be effectively intercepted, and these unadsorbed metal impurities will directly enter the sedimentation tank with the wastewater, eventually causing a large amount of metal debris to remain in the sedimentation system, resulting in the need for secondary separation of the metal debris in the sedimentation tank, thereby increasing the process cost.

[0026] In order to avoid the above situation, the present application optimizes the design of the existing industrial polishing wastewater circulating tank, so that the wastewater circulating tank of the present application can separate the ferromagnetic metal in the wastewater in advance before treating the wastewater, avoiding secondary separation of the ferromagnetic metal in the precipitate, improving the separation efficiency, and ensuring the purity of the separated ferromagnetic metal. At the same time, when separating the ferromagnetic metal, wastewater can be continuously injected, and the wastewater circulating tank can continuously perform separation operation and avoid the situation that the ferromagnetic metal is adsorbed and falls. The specific structure and working process of the present application are as follows: When running, the wastewater is discharged from the material falling port 3 into the ferromagnetic metal separation bin 2, and after treatment, the wastewater falls into the sedimentation bin 1 for sedimentation. The wastewater discharged from the material falling port 3 directly falls on the magnetic roller 21, which can be made of permanent magnet material or can use electromagnetic type power-on magnetism. When the wastewater falls on the magnetic roller 21, the magnetic roller 21 is in a continuous rotating state, and the rotating speed of the magnetic roller 21 is 10 r / min. The rotation of the magnetic roller 21 ensures that the metal debris in the wastewater can be evenly attached to the magnetic roller 21, avoiding the accumulation of metal debris at a single position of the magnetic roller 21. At this time, the scraping ring 24 is located in the material falling area, that is, the scraping ring 24 is located on the connecting roller 22. The driving unit 25 is preset with a rated interval start time. After the magnetic roller 21 runs for a period of time, the driving unit 25 starts to move the scraping ring 24 along the axis of the rotating roller. The scraping ring 24 moves from one end of the connecting roller 22 of the magnetic roller 21 to the other end of the connecting roller 22. Since the inner ring diameter of the scraping ring 24 is the same as the diameter of the magnetic roller 21, the metal debris attached to the magnetic roller 21 can be scraped off when the scraping ring 24 moves. The metal debris scraped off by the scraping ring 24 will not directly fall off, but will be accumulated at the front end of the scraping ring 24 under the magnetic force of the magnetic roller 21. When the scraping ring 24 moves to the connecting roller 22 at the other end of the magnetic roller 21, the metal debris accumulated at the front end of the scraping ring 24 will fall off because the connecting roller 22 has no magnetism. At this time, the driving unit 25 stops running, and the driving unit 25 starts again after reaching the preset start time, and the cycle is repeated.

[0027] When the amount of metal debris accumulated at the front end of the scraping ring 24 is too much, some of it will still fall off. The above problem will be described below.

[0028] Referring to Figure 4 , Figure 7 and Figure 10 , two first rubber rings 241 are arranged on the scraping ring 24, and the two first rubber rings 241 are arranged at the two ends of the scraping ring 24 and on the inner ring of the scraping ring 24. The inner ring of the first rubber ring 241 is in interference fit with the rotating roller.

[0029] The first rubber ring 241 arranged on the inner ring of the scraping ring 24 will not rotate relative to the scraping ring 24. By arranging the first rubber ring 241 on both ends of the scraping ring 24, the scraping ring 24 scrapes the metal scraps or particles adhered to the magnetic roller 21 through the first rubber ring 241. After long-term use, only the worn first rubber ring 241 needs to be replaced, thereby reducing the later use cost. At the same time, the inner ring of the first rubber ring 241 is in interference fit with the rotating roller, thereby improving the scraping effect of the first rubber ring 241 on the metal particles adhered to the rotating roller.

[0030] With reference to Figure 8 and Figure 9 The second rubber ring 242 is arranged on the inner ring of the scraping ring 24, and a plurality of extension strips 2421 arranged around the axis of the second rubber ring 242 are arranged on the inner ring side of the second rubber ring 242. The extension strips 2421 extend towards the rotating roller and contact the surface of the rotating roller.

[0031] Since the first rubber ring 241 and the rotating roller are in interference fit, when the rotating roller rotates, the first rubber ring 241 synchronously moving with the scraping ring 24 will also be subjected to a torsional force. Since the scraping ring 24 and the first rubber ring 241 will not rotate relative to each other, when the first rubber ring 241 is subjected to a torsional force, the scraping ring 24 will rotate synchronously with the first rubber ring 241. However, this rotation is hysteretic, that is, there is relative sliding between the first rubber ring 241 and the rotating roller, which causes the first rubber ring 241 to move with the scraping ring 24 while cleaning the metal scraps adhered to the magnetic roller 21 and slightly rotating relative to the magnetic roller 21, thereby causing the first rubber ring 241 to wear quickly. In order to avoid the above situation, the second rubber ring 242 is arranged on the inner ring of the scraping ring 24, and a plurality of extension strips 2421 arranged around the axis of the second rubber ring 242 are arranged on the inner ring side of the second rubber ring 242. The extension strips 2421 extend towards the rotating roller and contact the surface of the rotating roller. The extension strips 2421 after contacting the rotating roller have unidirectional inclination, and the inclination direction of the extension strips 2421 is the same as the rotating direction of the rotating roller. Since the rotating direction of the rotating roller is always constant, the extension strips 2421 will not be subjected to a force opposite to the inclination direction thereof. By arranging the second rubber ring 242 provided with the extension strips 2421, the torsional friction between the scraping ring 24 and the rotating roller is improved, the wear of the first rubber ring 241 caused by the torsional force is reduced, and the service life of the first rubber ring 241 is prolonged.

[0032] With reference to Figure 8 and Figure 10A shaped sleeve 26 is sleeved on the periphery of the scraping ring 24, the shaped sleeve 26 is annular in structure, a ring groove 261 is formed on the inner ring side of the shaped sleeve 26, the ring groove 261 is coaxial with the shaped sleeve 26, an extension ring 243 is coaxially fixed on the outer side of the scraping ring 24, the extension ring 243 slides in the ring groove 261, the axial length of the scraping ring 24 is less than the axial length of the shaped sleeve 26, the driving unit 25 drives the scraping ring 24 to move through the shaped sleeve 26.

[0033] When the driving unit 25 drives the scraping ring 24 to move along the axis of the rotating roller, especially when the scraping ring 24 moves in the magnetic attraction area, a large amount of metal scraps and particles adsorbed on the magnetic roller 21 will form a pile at one end of the scraping ring 24, as the pile increases, part of the metal scraps and particles will fall off because they gradually move away from the magnetic roller 21, which causes part of the metal scraps or particles to fall into the sediment tank 1 during the cleaning process of the magnetic roller 21. In order to avoid the metal scraps or particles from falling into the sediment tank 1 during the cleaning of the magnetic roller 21, the shaped sleeve 26 is sleeved on the periphery of the scraping ring 24.

[0034] Since the axial length of the scraping ring 24 is less than the axial length of the shaped sleeve 26, and the driving unit 25 drives the scraping ring 24 to move through the shaped sleeve 26, when moving, the shaped sleeve 26 moves first, and the scraping ring 24 moves under the driving of the shaped sleeve 26, at the front end of the scraping ring 24, the scraping ring 24 and the shaped sleeve 26 can form a receiving groove for receiving the metal scraps that fall off during the scraping process. When the shaped sleeve 26 moves, the extension ring 243 moves correspondingly with the ring groove 261, when the extension ring 243 moves to one end of the ring groove 261, the shaped sleeve 26 can drive the scraping ring 24 to move, at this time, the receiving groove at the front end of the scraping ring 24 is completely formed.

[0035] During the scraping process of the scraping ring 24 through the first rubber ring 241, even if the metal scraps fall off, they can be received by the receiving groove, which ensures that the metal scraps will not fall into the sediment tank 1 during the scraping process.

[0036] Referring to Figure 1 , Figure 3 , Figure 4 and Figure 10 The circulating box further comprises electromagnets 4, the electromagnets 4 are provided with two and are respectively arranged at both ends of the rotating roller, the scraping ring 24 is made of ferromagnetic material.

[0037] When the driving unit 25 drives the scraping ring 24 to the connecting roller 22 at one end of the magnetic roller 21 through the forming sleeve 26, the metal scraps at the front end of the scraping ring 24 all fall into the receiving groove, at this time, the driving unit 25 stops running, and the forming sleeve 26 cannot move along the axis direction of the rotating roller. Then the electromagnet 4 is powered on, and the scraping ring 24 and the metal scraps in the receiving groove move to the electromagnet 4 under the magnetic attraction of the electromagnet 4, and the scraping ring 24 completely pushes out the metal scraps in the receiving groove under the magnetic attraction, at this time, the receiving groove at the front end of the scraping ring 24 disappears, and a new receiving groove appears at the tail of the scraping ring 24, and the pushed-out metal scraps are attached to the wall of the ferromagnetic metal separation bin 2 under the magnetic attraction, then the electromagnet 4 is powered off, and the metal scraps fall under the action of gravity. The connecting roller 22 is provided with a discharge bin 5 below, and the falling metal scraps fall into the discharge bin 5 and are discharged.

[0038] The scraping ring 24 is also provided with a third rubber ring 245, and the third rubber ring 245 is provided with two and is located at both ends of the scraping ring 24 respectively. The third rubber ring 245 is sleeved on the outer ring of the scraping ring 24, and the outer diameter of the third rubber ring 245 is the same as the inner diameter of the forming sleeve 26. When the scraping ring 24 pushes out the metal scraps in the receiving groove under the action of the electromagnet 4, the scraping ring 24 contacts with the inner ring side wall of the forming sleeve 26 through the third rubber ring 245, avoiding the direct wear between the scraping ring 24 and the forming sleeve 26.

[0039] Referring to Figure 10 A plurality of limiting grooves 244 are uniformly arranged on the outer ring side of the extension ring 243 around the axis of the extension ring 243, and a plurality of limiting strips 262 are uniformly arranged on the ring groove 261 around the axis of the ring groove 261, and the limiting strips 262 are in clamping connection with the limiting grooves 244.

[0040] Through the clamping connection of the limiting grooves 244 and the limiting strips 262, the forming sleeve 26 and the extension ring 243 cannot rotate relatively, avoiding the wear between the extension ring 243 and the forming sleeve 26 due to relative rotation, and reducing the wear of the third rubber ring 245. When the scraping ring 24 rotates synchronously with the rotating roller under the action of the first rubber ring 241 and the second rubber ring 242, the forming sleeve 26 rotates synchronously with the scraping ring 24.

[0041] Referring to Figure 4 A driving frame 27 is arranged on the outside of the forming sleeve 26, the forming sleeve 26 is in rotating connection with the driving frame 27, and the driving unit 25 is directly connected with the driving frame 27.

[0042] The driving unit 25 is preferably a screw rod type, and the driving frame 27 is threadedly connected with the driving unit 25. A rolling ball 271 is arranged on the end surface of the forming sleeve 26 and the driving frame 27, and when the forming sleeve 26 and the driving frame 27 rotate relative to each other, the forming sleeve 26 indirectly contacts the driving frame 27 through the rolling ball 271, which reduces the abrasion between the forming sleeve 26 and the driving frame 27, and also reduces the resistance when the forming sleeve 26 rotates synchronously with the scraping ring 24, further reducing the torsional displacement between the first rubber ring 241 and the rotating roller.

[0043] With reference to Figure 7 and Figure 8 A shielding plate 28 is arranged above the driving frame 27.

[0044] Since the scraping ring 24 moves on the magnetic roller 21, the waste water continuously flows from the feeding opening 3, and by arranging the shielding plate 28, the waste water is prevented from flowing between the forming sleeve 26 and the driving frame 27, so that the forming sleeve 26 and the driving frame 27 are not worn out due to the metal scraps in the waste water.

[0045] With reference to Figures 6 to 8 A guide groove 281 parallel to the extending direction of the rotating roller is arranged on the upper part of the shielding plate 28. When the scraping ring 24 passes through the magnetic roller 21, the waste water falling from the feeding opening 3 is received by the shielding plate 28 and guided by the guide groove 281 to flow onto the magnetic roller 21 on both sides of the scraping ring 24. Therefore, all the waste water needs to pass through the magnetic roller 21 for magnetic separation before entering the sedimentation bin 1.

[0046] With reference to Figures 1 to 10 The present application also provides an industrial polishing waste water treatment device, which comprises the industrial polishing waste water circulating tank and the chemical reagent treatment groove in the above embodiments.

[0047] Part of the water treated by the industrial polishing waste water circulating tank is pumped back to the polishing operation, but it is worth noting that the waste water treated in the rough grinding stage is still used in the rough grinding stage, and the waste water treated in the fine grinding stage is still used in the fine grinding stage, so that the waste water in the two stages is not mixed when it is recycled, which is convenient for subsequent treatment and reduces the separation difficulty.

[0048] Working principle: industrial polishing wastewater first through the ferromagnetic metal separation bin 2 upper material drop hole 3 continuously into the bin, wastewater under the action of gravity directly to the horizontal setting magnetic roller 21 surface. Magnetic roller 21 in the drive of the rotary drive 23 under the drive of the constant speed of 10 r / min continuously rotating, this speed design can not only ensure that the ferromagnetic metal debris in the wastewater and the surface of the magnetic roller 21 contact fully, but also avoid the metal debris in the magnetic roller 21 single area accumulation, realize uniform adsorption, at the same time can also avoid the speed too fast to produce larger centrifugal force, so that the metal debris can not be stable attached to the magnetic roller 21. At this time, the initial state of the scraper ring 24 is on the connecting roller 22 at both ends of the magnetic roller 21, that is, the non-magnetic material drop area, which does not interfere with the magnetic attraction work of the magnetic roller 21. The free metal debris in the wastewater is attached to the surface of the magnetic roller 21 under the action of the magnetic force of the magnetic roller 21, completing the core magnetic attraction step of solid-liquid separation and preliminarily realizing the separation of metal debris and wastewater.

[0049] The magnetic roller 21 continuously runs to the rated interval time of the driving unit 25, and the driving unit 25 starts and drives the scraper ring 24 to move along the rotating roller axis through the forming sleeve 26. The inner ring of the scraper ring 24 is provided with a first rubber ring 241, and the first rubber ring 241 is in interference fit with the rotating roller. This structure design not only can enhance the scraping effect and ensure that the metal debris on the surface of the magnetic roller 21 is completely scraped off, but also can reduce the maintenance cost in the later period by replacing the worn first rubber ring 241. The scraper ring 24 moves slowly from one end of the connecting roller 22 to the other end of the connecting roller 22, and in the process, the scraped metal debris is not directly dropped under the magnetic force adsorption of the magnetic roller 21, but gradually accumulates to form a regular debris group at the front end of the scraper ring 24. At the same time, the second rubber ring 242 and the one-way inclined extension strip 2421 added to the inner ring of the scraper ring 24 are in close contact with the surface of the rotating roller and the inclination direction is consistent with the rotating direction of the magnetic roller 21, which effectively improves the torsional friction and reduces the wear of the first rubber ring 241 due to relative sliding, ensuring the stability and continuity of the scraping process.

[0050] When the scraper ring 24 moves to the connecting roller 22 at the other end of the magnetic roller 21, the metal debris accumulated at the front end of the scraper ring 24 loses the magnetic force adsorption. At this time, the driving unit 25 stops running, the electromagnet 4 arranged at the end of the rotating roller is energized and started, and under the magnetic attraction of the electromagnet 4, the scraper ring 24 moves towards the electromagnet 4. The scraper ring 24 completely ejects the metal debris in the receiving groove, and as the scraper ring 24 is ejected, the receiving groove at the front end of the scraper ring 24 gradually disappears, and a new receiving groove is gradually formed at the rear end of the scraper ring 24. Then the electromagnet 4 is de-energized, and the metal debris loses the magnetic attraction and falls under the gravity to the discharge bin 5 below the connecting roller 22.

[0051] The embodiments of the present application are described above with reference to the accompanying drawings, but the present application is not limited to the above-described specific embodiments, and the above-described specific embodiments are merely illustrative, but not restrictive, and a person of ordinary skill in the art can make many forms under the inspiration of the present application without departing from the purpose of the present application and the scope protected by the claims, and all of them belong to the protection of the present application.

Claims

1. An industrial polishing wastewater recycling tank characterized by, The utility model relates to a kind of circulating box, including: sedimentation bin (1), ferromagnetic metal separation bin (2) and the blanking port (3) being set in the upper portion of ferromagnetic metal separation bin (2);It is provided with magnetic roller (21), connecting roller (22), rotary driver (23), scraping ring (24) and drive unit (25) in ferromagnetic metal separation bin (2);Magnetic roller (21) is rotationally arranged in the blanking port (3) directly below, and magnetic roller (21) forms magnetic attraction area;Connecting roller (22) is provided with two, and two connecting roller (22) are respectively fixedly arranged in the two ends of magnetic roller (21), and respectively with magnetic roller (21) coaxial, and connecting roller (22) forms blanking area, and magnetic roller (21) and two connecting roller (22) form rotating roller in common;Rotary driver (23) is arranged on the side wall of ferromagnetic metal separation bin (2), for driving rotating roller rotation;Scraping ring (24) is movably arranged on rotating roller along the axis of rotating roller, and the inner diameter of scraping ring (24) is same with the diameter of rotating roller;Drive unit (25) is arranged on one side of scraping ring (24) for driving scraping ring (24) movement. Two first rubber rings (241) are arranged on scraping ring (24), and two first rubber rings (241) are respectively arranged on the two ends of scraping ring (24), and are arranged on the inner ring of scraping ring (24), and the inner ring of first rubber ring (241) is interference fit with rotating roller. Second rubber ring (242) is arranged on the inner ring of scraping ring (24), and a plurality of extension bars (2421) are arranged around the axis of second rubber ring (242) on the inner ring side of second rubber ring (242), and the extension bars (2421) extend to rotating roller and contact the surface of rotating roller. Formed sleeve (26) is movably arranged on the periphery of scraping ring (24), and formed sleeve (26) is annular structure, and ring groove (261) is formed on the inner ring side of formed sleeve (26), and ring groove (261) is coaxial with formed sleeve (26), and extension ring (243) is fixedly arranged on the outer side of scraping ring (24) coaxially, and extension ring (243) slides in ring groove (261), and the axial length of scraping ring (24) is less than the axial length of formed sleeve (26), and drive unit (25) drives scraping ring (24) to move through formed sleeve (26). The circulating box further comprises electromagnets (4), and the electromagnets (4) are arranged on the two ends of the rotating roller, and the scraping ring (24) is made of ferromagnetic material. A plurality of limiting grooves (244) are uniformly formed on the outer ring side of the extension ring (243) around the axis of the extension ring (243), and a plurality of limiting strips (262) are uniformly formed on the ring groove (261) around the axis of the ring groove (261), and the limiting strips (262) are in clamping fit with the limiting grooves (244). A driving frame (27) is arranged on the outer side of the formed sleeve (26), and the formed sleeve (26) is in rotational fit with the driving frame (27), and the drive unit (25) is directly connected with the driving frame (27). A shielding plate (28) is arranged above the driving frame (27).

2. The industrial polishing wastewater recycling tank of claim 1, wherein, A guide groove (281) parallel to the extension direction of the rotating roller is formed on the upper portion of the shielding plate (28).

3. The industrial polishing wastewater recycling tank of claim 2, wherein, ​ 4. The industrial polishing wastewater recycling tank according to claim 2 or 3, characterized in that, ​ 5. The industrial polishing wastewater recycling tank of claim 4, wherein, ​ 6. The industrial polishing wastewater recycling tank of claim 4, wherein, ​ 7. The industrial polishing wastewater recycling tank of claim 4, wherein, ​ 8. The industrial polishing wastewater recycling tank of claim 7, wherein, ​ 9. The industrial polishing wastewater recycling tank of claim 8, wherein, ​ 10. An industrial polishing wastewater treatment apparatus characterized by comprising: An industrial polishing wastewater circulation tank and a chemical reagent treatment tank as claimed in any one of claims 1 to 9 are included.

Images